+++ /dev/null
-\documentclass[a4paper]{book}
-\usepackage{a4wide}
-\usepackage{makeidx}
-\usepackage{fancyhdr}
-\usepackage{graphicx}
-\usepackage{multicol}
-\usepackage{float}
-\usepackage{textcomp}
-\usepackage{alltt}
-\usepackage{times}
-\usepackage{ifpdf}
-\ifpdf
-\usepackage[pdftex,
- pagebackref=true,
- colorlinks=true,
- linkcolor=blue,
- unicode
- ]{hyperref}
-\else
-\usepackage[ps2pdf,
- pagebackref=true,
- colorlinks=true,
- linkcolor=blue,
- unicode
- ]{hyperref}
-\usepackage{pspicture}
-\fi
-%\usepackage[utf8]{inputenc}
-\usepackage{doxygen}
-\makeindex
-\setcounter{tocdepth}{3}
-\renewcommand{\footrulewidth}{0.4pt}
-\begin{document}
-\begin{titlepage}
-\vspace*{7cm}
-\begin{center}
-{\Large L4Re -- L4 Runtime Environment}\\
-\end{center}
-\end{titlepage}
-\clearemptydoublepage
-\pagenumbering{roman}
-\tableofcontents
-\clearemptydoublepage
-\pagenumbering{arabic}
-
+++ /dev/null
-/**
- * \file
- * \brief Real-time scheduling include
- */
-/*
- * (c) 2008-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>
- * economic rights: Technische Universität Dresden (Germany)
- *
- * This file is part of TUD:OS and distributed under the terms of the
- * GNU General Public License 2.
- * Please see the COPYING-GPL-2 file for details.
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction. Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License. This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- */
-#ifndef __L4_SYS__ARCH_ARM__RT_SCHED_H__
-#define __L4_SYS__ARCH_ARM__RT_SCHED_H__
-
-/* Empty, just to be here. */
-
-#endif /* __L4_SYS__ARCH_ARM__RT_SCHED_H__ */
+++ /dev/null
-/**
- * \file
- * \brief Implementation of real-time scheduling system calls
- */
-/*
- * (c) 2005-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
- * Alexander Warg <warg@os.inf.tu-dresden.de>,
- * Jork Löser <jork@os.inf.tu-dresden.de>
- * economic rights: Technische Universität Dresden (Germany)
- *
- * This file is part of TUD:OS and distributed under the terms of the
- * GNU General Public License 2.
- * Please see the COPYING-GPL-2 file for details.
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction. Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License. This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- */
-#ifndef __SYS_INCLUDE_ARCH_X86_RT_SCHED_IMPL_H_
-#define __SYS_INCLUDE_ARCH_X86_RT_SCHED_IMPL_H_
-
-#include <l4/sys/ipc.h>
-
-L4_INLINE int
-l4_rt_generic(l4_threadid_t dest, l4_sched_param_t param,
- l4_kernel_clock_t clock)
-{
- unsigned dummy;
- int ret;
-
- __asm__ __volatile__(
- "pushl %%ebp \n\t" /* save ebp, no memory references
- ("m") after this point */
- L4_SYSCALL(thread_schedule)
- "popl %%ebp \n\t" /* restore ebp, no memory references
- ("m") before this point */
- :
- "=a" (ret),
- "=c" (dummy),
- "=d" (dummy),
- "=S" (dummy)
- :
- "a" (param),
- "c" ((l4_uint32_t)clock),
- "d" ((l4_uint32_t)(clock>>32)),
- "S" (dest.raw)
- :
- "ebx", "edi"
- );
- return ret;
-}
-
-
-/* Erm, the user shall be allowed to pass "normal" time parameters, not
- * the mantissa/exponent coding. Thus, make a reference to the external
- * l4util function. */
-L4_INLINE int
-l4_rt_add_timeslice(l4_threadid_t dest, int prio, int time)
-{
- l4_sched_param_t sched = {sp:{prio:prio, small:0,
- state:L4_RT_ADD_TIMESLICE}};
- l4_sched_param_set_time(time, &sched);
- return l4_rt_generic(dest, sched, 0);
-}
-
-L4_INLINE int
-l4_rt_change_timeslice(l4_threadid_t dest, int id, int prio, int time)
-{
- l4_sched_param_t sched = {sp:{prio:prio, small:id,
- state:L4_RT_CHANGE_TIMESLICE}};
- l4_sched_param_set_time(time, &sched);
- return l4_rt_generic(dest, sched, 0);
-}
-
-L4_INLINE int
-l4_rt_begin_strictly_periodic (l4_threadid_t dest, l4_kernel_clock_t clock)
-{
- return l4_rt_generic(dest,
- (l4_sched_param_t){
- sp:{ prio:0, small:0,
- state:L4_RT_BEGIN_PERIODIC}},
- clock);
-}
-
-L4_INLINE int
-l4_rt_begin_minimal_periodic (l4_threadid_t dest, l4_kernel_clock_t clock)
-{
- return l4_rt_generic(dest,
- (l4_sched_param_t){
- sp:{prio:0, small: 0,
- state:L4_RT_BEGIN_PERIODIC_NS}},
- clock);
-}
-
-L4_INLINE int
-l4_rt_end_periodic(l4_threadid_t dest)
-{
- return l4_rt_generic(dest,
- (l4_sched_param_t){
- sp:{prio:0, small:0,
- state:L4_RT_END_PERIODIC}}, 0);
-}
-
-L4_INLINE int
-l4_rt_remove(l4_threadid_t dest)
-{
- return l4_rt_generic(dest,
- (l4_sched_param_t){
- sp:{prio:0, small:0,
- state:L4_RT_REM_TIMESLICES}}, 0);
-}
-
-L4_INLINE void
-l4_rt_set_period(l4_threadid_t dest, l4_kernel_clock_t clock)
-{
- l4_rt_generic(dest,
- (l4_sched_param_t){
- sp:{prio:0, small:0,
- state:L4_RT_SET_PERIOD}},
- clock);
-}
-
-L4_INLINE int
-l4_rt_next_reservation(unsigned id, l4_kernel_clock_t*clock)
-{
- long dummy;
- int ret;
-
- __asm__ __volatile__(
- "pushl %%ebp \n\t" /* save ebp, no memory references
- ("m") after this point */
- L4_SYSCALL(thread_switch)
- "popl %%ebp \n\t" /* restore ebp, no memory references
- ("m") before this point */
- :
- "=a" (ret),
- "=c" (((l4_low_high_t*)clock)->low),
- "=d" (((l4_low_high_t*)clock)->high),
- "=S" (dummy)
- :
- "S" (0),
- "a" (id)
- :
- "ebx", "edi"
- );
- return ret;
-}
-
-L4_INLINE int
-l4_rt_next_period(void)
-{
- l4_umword_t dummy;
- l4_msgdope_t result;
- return l4_ipc_receive(l4_next_period_id(L4_NIL_ID),
- L4_IPC_SHORT_MSG,
- &dummy, &dummy, L4_IPC_BOTH_TIMEOUT_0,
- &result);
-}
-
-L4_INLINE int
-l4_rt_dp_reserve(int duration)
-{
- /* no-op */
- return 0;
-}
-
-L4_INLINE void
-l4_rt_dp_remove(void){
- /* no-op */
-}
-
-L4_INLINE void
-l4_rt_dp_begin(void){
- __asm__ __volatile__ ("cli" : : : "memory");
-}
-
-L4_INLINE void
-l4_rt_dp_end(void){
- __asm__ __volatile__ ("sti" : : : "memory");
-}
-#endif /* ! __L4_SYS__RT_SCHED_H__ */
+++ /dev/null
-/**
- * \file
- * \brief Identifier and prototype definitions for real-time scheduling
- */
-/*
- * (c) 2005-2009 Adam Lackorzynski <adam@os.inf.tu-dresden.de>,
- * Alexander Warg <warg@os.inf.tu-dresden.de>,
- * Björn Döbel <doebel@os.inf.tu-dresden.de>,
- * Frank Mehnert <fm3@os.inf.tu-dresden.de>,
- * Jork Löser <jork@os.inf.tu-dresden.de>
- * economic rights: Technische Universität Dresden (Germany)
- *
- * This file is part of TUD:OS and distributed under the terms of the
- * GNU General Public License 2.
- * Please see the COPYING-GPL-2 file for details.
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction. Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License. This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- */
-#ifndef __SYS_INCLUDE_ARCH_X86_RT_SCHED_PROTO_H_
-#define __SYS_INCLUDE_ARCH_X86_RT_SCHED_PROTO_H_
-
-#include <l4/sys/types.h>
-#include <l4/sys/syscalls.h>
-
-#define L4_RT_ADD_TIMESLICE 1 /**< Add time slice */
-#define L4_RT_REM_TIMESLICES 2 /**< Remove time slice */
-#define L4_RT_SET_PERIOD 3 /**< Set period */
-#define L4_RT_BEGIN_PERIODIC 4 /**< Begin periodic */
-#define L4_RT_BEGIN_PERIODIC_NS 5 /**< Begin periodic */
-#define L4_RT_END_PERIODIC 6 /**< End periodic */
-#define L4_RT_CHANGE_TIMESLICE 7 /**< Change time slice */
-
-#define L4_RT_NEXT_PERIOD 0x10 /**< Next period */
-#define L4_RT_PREEMPTION_ID 0x20 /**< Preemption ID */
-
-/** \brief Struct \internal */
-typedef struct {
- l4_uint64_t time:56; /**< time */
- l4_uint64_t id:7; /**< id */
- l4_uint64_t type:1; /**< id */
-} l4_rt_preemption_val_t;
-/** \brief Struct \internal */
-typedef struct {
- l4_uint32_t time_high:24; /**< time_high */
- l4_uint32_t id:7; /**< id */
- l4_uint32_t type:1; /**< type */
-} l4_rt_preemption_val32_t;
-/** \brief Struct \internal */
-typedef union {
- l4_low_high_t lh; /**< lh value */
- l4_rt_preemption_val_t p; /**< p value */
-} l4_rt_preemption_t;
-
- /* preemption ipc types: values of the type field */
-#define L4_RT_PREEMPT_DEADLINE 0 /**< deadline miss */
-#define L4_RT_PREEMPT_TIMESLICE 1 /**< time slice overrun */
-
-/*!\brief Add a time slice for periodic execution.
- * \ingroup api_calls_rt_sched
- *
- * \param dest thread to add the time slice to
- * \param prio priority of the time slice
- * \param time length of the time slice in microseconds
- * \retval 0 OK
- * \retval -1 Error, one of:
- * - dest does not exist
- * - insufficient MCP (old or new prio>MCP),
- * - dest running in periodic mode or transitioning to
- * - time quantum 0 or infinite
- */
-L4_INLINE int
-l4_rt_add_time slice(l4_threadid_t dest, int prio, int time);
-
-/*!\brief Change a time slice for periodic execution.
- * \ingroup api_calls_rt_sched
- *
- * \param dest thread whose timing parameters are to change
- * \param id number of the time-slice to change (rt start at 1)
- * \param prio new priority of the time slice
- * \param time new length of the time slice in microseconds,
- * 0: don't change.
- * \retval 0 OK
- * \retval -1 Error, one of:
- * - dest does not exist
- * - insufficient MCP (old or new prio>MCP),
- * - time slice does not exist
- *
- * This function modifies the priority and optionally the length of an
- * existing time slice of a thread. When calling this function while
- * the time slice is active, the effect may be delayed till the next
- * period.
- *
- * This function can be called as soon as the denoted time slice was
- * added with l4_rt_add_time slice(). Thus, the thread may have started
- * periodic execution already, but it needs not.
- */
-L4_INLINE int
-l4_rt_change_time slice(l4_threadid_t dest, int id, int prio, int time);
-
-/*!\brief Start strictly periodic execution
- * \ingroup api_calls_rt_sched
- *
- * \param dest thread that starts periodic execution
- * \param clock absolute time to start.
- * \retval 0 OK
- * \retval -1 Error, one of:
- * - dest does not exist
- * - insufficient MCP (old or new prio>MCP),
- * - dest running in periodic mode or transitioning to
- *
- * Call this function to start the periodic execution after setting up
- * the time slices using l4_rt_add_time slice() and l4_rt_set_period().
- *
- * By the time specified in clock thread dest must wait for the next period,
- * e.g. by using l4_rt_next_period() or some other IPC with the
- * L4_RT_NEXT_PERIOD flag enabled. Otherwise the transition to periodic mode
- * fails.
- */
-L4_INLINE int
-l4_rt_begin_strictly_periodic(l4_threadid_t dest, l4_kernel_clock_t clock);
-
-/*!\brief Start periodic execution with minimal inter-release times
- * \ingroup api_calls_rt_sched
- *
- * \param dest thread that starts periodic execution
- * \param clock absolute time to start.
- * \retval 0 OK
- * \retval -1 Error, one of:
- * - dest does not exist
- * - insufficient MCP (old or new prio>MCP),
- * - dest running in periodic mode or transitioning to
- *
- * Call this function to start the periodic execution after setting up
- * the time slices using l4_rt_add_time slice() and l4_rt_set_period().
- *
- * By the time specified in clock thread dest must wait for the next period,
- * e.g. by using l4_rt_next_period() or some other IPC with the
- * L4_RT_NEXT_PERIOD flag enabled. Otherwise the transition to periodic mode
- * fails.
- */
-L4_INLINE int
-l4_rt_begin_minimal_periodic(l4_threadid_t dest, l4_kernel_clock_t clock);
-
-/*!\brief Stop periodic execution
- * \ingroup api_calls_rt_sched
- *
- * \param dest thread that stops periodic execution
- * \retval 0 OK
- * \retval -1 Error, one of:
- * - dest does not exist
- * - insufficient MCP (old or new prio>MCP),
- * - dest not running in periodic mode and
- * not transitioning to
- *
- * This function aborts the periodic execution of thread dest. Thread dest
- * returns to conventional scheduling then.
- */
-L4_INLINE int
-l4_rt_end_periodic(l4_threadid_t dest);
-
-/*!\brief Remove all reservation scheduling contexts
- * \ingroup api_calls_rt_sched
- *
- * This function removes all the scheduling contexts that were set up
- * so far for the given thread.
- *
- * \param dest thread the scheduling contexts should be removed from
- * \retval 0 OK
- * \retval -1 Error, one of:
- * - dest does not exist
- * - insufficient MCP
- * - dest running in periodic mode or transitioning to
- */
-L4_INLINE int
-l4_rt_remove(l4_threadid_t dest);
-
-/*!\brief Set the length of the period
- * \ingroup api_calls_rt_sched
- *
- * This function sets the length of the period for periodic execution.
- *
- * \param dest destination thread
- * \param clock period length in microseconds. Will be rounded up
- * by the kernel according to the timer granularity.
- * \return This function always succeeds.
- */
-L4_INLINE void
-l4_rt_set_period(l4_threadid_t dest, l4_kernel_clock_t clock);
-
-/*!\brief activate the next time slice (scheduling context)
- * \ingroup api_calls_rt_sched
- *
- * \param id The ID of the time slice we think we are on
- * (current time slice)
- * \param clock pointer to a l4_kernel_clock_t variable
- * \retval 0 OK, *clock contains the remaining time of the time slice
- * \retval -1 Error, id did not match current time slice
- *
- */
-L4_INLINE int
-l4_rt_next_reservation(unsigned id, l4_kernel_clock_t*clock);
-
-/*!\brief Wait for the next period, skipping all unused time slices
- * \ingroup api_calls_rt_sched
- *
- * \retval 0 OK
- * \retval !0 IPC Error.
- *
- */
-L4_INLINE int
-l4_rt_next_period(void);
-
-/*!\brief Return the preemption id of a thread
- * \ingroup api_calls_rt_sched
- *
- * \param id thread
- *
- * \return thread-id of the (virtual) preemption IPC sender
- */
-L4_INLINE l4_threadid_t
-l4_preemption_id(l4_threadid_t id);
-
-/*!\brief Return thread-id that flags waiting for the next period
- * \ingroup api_calls_rt_sched
- *
- * \param id original thread-id
- *
- * \return modified id, to be used in an IPC, waiting for the next period.
- */
-L4_INLINE l4_threadid_t
-l4_next_period_id(l4_threadid_t id);
-
-/*!\brief Generic real-time setup function
- * \ingroup api_calls_rt_sched
- *
- * \param dest destination thread
- * \param param scheduling parameter
- * \param clock clock parameter
- * \retval 0 OK
- * \retval -1 Error.
- *
- * This function is not meant to be used directly, it is merely used
- * by others.
- */
-L4_INLINE int
-l4_rt_generic(l4_threadid_t dest, l4_sched_param_t param,
- l4_kernel_clock_t clock);
-
-/*!\brief Delayed preemption: Reserve a duration
- *
- * \param duration time (microseconds)
- * \retval 0 OK
- * \retval !0 Error.
- *
- * This function reserves a non-preemptible duration at the kernel.
- *
- * \note Due to the currently missing support in the kernel, this
- * call is a no-op.
- */
-L4_INLINE int
-l4_rt_dp_reserve(int duration);
-
-/*!\brief Delayed preemption: Cancel a reservation
- *
- * \retval 0 OK
- * \retval !0 Error.
- */
-L4_INLINE void
-l4_rt_dp_remove(void);
-
-/*!\brief Delayed preemption: Start a delayed preemption
- *
- * After making a dp reservation, a thread can start an uninterruptible
- * execution for the reserved time.
- *
- * \note Due to the currently missing support in the kernel, this
- * call is implemented as a cli(), requiring cooperation from the
- * calling thread.
- */
-L4_INLINE void
-l4_rt_dp_begin(void);
-
-/*!\brief Delayed preemption: End a delayed preemption
- *
- * After calling this function, the thread may be preempted by the kernel
- * again.
- */
-L4_INLINE void
-l4_rt_dp_end(void);
-
-/***************************************************************************
- *** IMPLEMENTATIONS
- ***************************************************************************/
-
-L4_INLINE l4_threadid_t
-l4_preemption_id(l4_threadid_t id)
-{
- //id.id.chief |= L4_RT_PREEMPTION_ID;
- return id;
-}
-
-L4_INLINE l4_threadid_t
-l4_next_period_id(l4_threadid_t id)
-{
- //id.id.chief |= L4_RT_NEXT_PERIOD;
- return id;
-}
-
-#endif /* ! __L4_SYS__RT_SCHED_H__ */
+++ /dev/null
-/**
- * \file
- * \brief Real-time scheduling include
- *
- * \date 01/05/2005
- * \author Jork Loeser <jork.loeser@inf.tu-dresdeen.de>
- *
- */
-/*
- * (c) 2005-2009 Author(s)
- * economic rights: Technische Universität Dresden (Germany)
- *
- * This file is part of TUD:OS and distributed under the terms of the
- * GNU General Public License 2.
- * Please see the COPYING-GPL-2 file for details.
- *
- * As a special exception, you may use this file as part of a free software
- * library without restriction. Specifically, if other files instantiate
- * templates or use macros or inline functions from this file, or you compile
- * this file and link it with other files to produce an executable, this
- * file does not by itself cause the resulting executable to be covered by
- * the GNU General Public License. This exception does not however
- * invalidate any other reasons why the executable file might be covered by
- * the GNU General Public License.
- */
-#ifndef __SYS_INCLUDE_ARCH_X86_RT_SCHED_H_
-#define __SYS_INCLUDE_ARCH_X86_RT_SCHED_H_
-
-#include <l4/sys/rt_sched-proto.h>
-#include <l4/sys/rt_sched-impl.h>
-
-#endif /* ! __L4_SYS__RT_SCHED_H__ */
+++ /dev/null
-
-Libpng 1.6.3 - July 18, 2013
-
-This is a public release of libpng, intended for use in production codes.
-
-Files available for download:
-
-Source files with LF line endings (for Unix/Linux) and with a
-"configure" script
-
- libpng-1.6.3.tar.xz (LZMA-compressed, recommended)
- libpng-1.6.3.tar.gz
-
-Source files with CRLF line endings (for Windows), without the
-"configure" script
-
- lpng163.7z (LZMA-compressed, recommended)
- lpng163.zip
-
-Other information:
-
- libpng-1.6.3-README.txt
- libpng-1.6.3-LICENSE.txt
-
-Changes since the last public release (1.6.2):
-
- Revised stack marking in arm/filter_neon.S and configure.ac.
- Ensure that NEON filter stuff is completely disabled when switched 'off'.
- Previously the ARM NEON specific files were still built if the option
- was switched 'off' as opposed to being explicitly disabled.
- Test for 'arm*' not just 'arm' in the host_cpu configure variable.
- Rebuilt the configure scripts.
- Expanded manual paragraph about writing private chunks, particularly
- the need to call png_set_keep_unknown_chunks() when writing them.
- Avoid dereferencing NULL pointer possibly returned from
- png_create_write_struct() (Andrew Church).
- Calculate our own zlib windowBits when decoding rather than trusting the
- CMF bytes in the PNG datastream.
- Added an option to force maximum window size for inflating, which was
- the behavior of libpng15 and earlier.
- Added png-fix-itxt and png-fix-too-far-back to the built programs and
- removed warnings from the source code and timepng that are revealed as
- a result.
- Detect wrong libpng versions linked to png-fix-too-far-back, which currently
- only works with libpng versions that can be made to reliably fail when
- the deflate data contains an out-of-window reference. This means only
- 1.6 and later.
- Fixed gnu issues: g++ needs a static_cast, gcc 4.4.7 has a broken warning
- message which it is easier to work round than ignore.
- Updated contrib/pngminus/pnm2png.c (Paul Stewart):
- Check for EOF
- Ignore "#" delimited comments in input file to pnm2png.c.
- Fixed whitespace handling
- Added a call to png_set_packing()
- Initialize dimension values so if sscanf fails at least we have known
- invalid values.
- Attempt to detect configuration issues with png-fix-too-far-back, which
- requires both the correct libpng and the correct zlib to function
- correctly.
- Check ZLIB_VERNUM for mismatches, enclose #error in quotes
- Added information in the documentation about problems with and fixes for
- the bad CRC and bad iTXt chunk situations.
- Allow contrib/pngminus/pnm2png.c to compile without WRITE_INVERT and
- WRITE_PACK supported (writes error message that it can't read P1 or
- Improved png-fix-too-far-back usage message, added --suffix option.
- Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the
- right zlib header files.
- Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile
- Removed a redundant test in png_set_IHDR().
- Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt)
- Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt
- Enclose the prototypes for the simplified write API in
- #ifdef PNG_STDIO_SUPPORTED/#endif
- Make ARM NEON support work at compile time (not just configure time).
- This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
- using a compiler that compiles for multiple architectures at one time.
- Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from
- pnglibconf.h, allowing more of the decisions to be made internally
- (pngpriv.h) during the compile. Without this, symbol prefixing is broken
- under certain circumstances on ARM platforms. Now only the API parts of
- the optimizations ('check' vs 'api') are exposed in the public header files
- except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the
- decision about whether or not to use the optimizations.
- Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage.
- Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test
- on __ARM_NEON__ from configure time to compile time. This breaks symbol
- prefixing because the definition of the special png_init_filter_functions
- call was hidden at configure time if the relevant compiler arguments are
- passed in CFLAGS as opposed to CC. This change attempts to avoid all
- the confusion that would result by declaring the init function even when
- it is not used, so that it will always get prefixed.
- Revised libpng.3 so that "doclifter" can process it.
- Revised example.c to illustrate use of PNG_DEFAULT_sRGB and PNG_GAMMA_MAC_18
- as parameters for png_set_gamma(). These have been available since
- libpng-1.5.4.
- Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it
- to check all compressed chunks known to libpng.
- Updated documentation to show default behavior of benign errors correctly.
- Only compile ARM code when PNG_READ_SUPPORTED is defined.
- Fixed undefined behavior in contrib/tools/pngfix.c and added new strip
- option. pngfix relied on undefined behavior and even a simple change from
- gcc to g++ caused it to fail. The new strip option 'unsafe' has been
- implemented and is the default if --max is given. Option names have
- been clarified, with --strip=transform now stripping the bKGD chunk,
- which was stripped previously with --strip=unused.
- Added all documented chunk types to pngpriv.h
- Unified pngfix.c source with libpng17.
- Revised manual about changes in iTXt chunk handling made in libpng-1.6.0.
- Added "/* SAFE */" comments in pngrutil.c and pngrtran.c where warnings
- may be erroneously issued by code-checking applications.
-
-Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-(subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe)
-or to glennrp at users.sourceforge.net
-
-Glenn R-P
+++ /dev/null
-#if 0
-CHANGES - changes for libpng
-
-Version 0.2
- added reader into png.h
- fixed small problems in stub file
-
-Version 0.3
- added pull reader
- split up pngwrite.c to several files
- added pnglib.txt
- added example.c
- cleaned up writer, adding a few new transformations
- fixed some bugs in writer
- interfaced with zlib 0.5
- added K&R support
- added check for 64 KB blocks for 16-bit machines
-
-Version 0.4
- cleaned up code and commented code
- simplified time handling into png_time
- created png_color_16 and png_color_8 to handle color needs
- cleaned up color type defines
- fixed various bugs
- made various names more consistent
- interfaced with zlib 0.71
- cleaned up zTXt reader and writer (using zlib's Reset functions)
- split transformations into pngrtran.c and pngwtran.c
-
-Version 0.5
- interfaced with zlib 0.8
- fixed many reading and writing bugs
- saved using 3 spaces instead of tabs
-
-Version 0.6
- added png_large_malloc() and png_large_free()
- added png_size_t
- cleaned up some compiler warnings
- added png_start_read_image()
-
-Version 0.7
- cleaned up lots of bugs
- finished dithering and other stuff
- added test program
- changed name from pnglib to libpng
-
-Version 0.71 [June, 1995]
- changed pngtest.png for zlib 0.93
- fixed error in libpng.txt and example.c
-
-Version 0.8
- cleaned up some bugs
- added png_set_filler()
- split up pngstub.c into pngmem.c, pngio.c, and pngerror.c
- added #define's to remove unwanted code
- moved png_info_init() to png.c
- added old_size into png_realloc()
- added functions to manually set filtering and compression info
- changed compression parameters based on image type
- optimized filter selection code
- added version info
- changed external functions passing floats to doubles (k&r problems?)
- put all the configurable stuff in pngconf.h
- enabled png_set_shift to work with paletted images on read
- added png_read_update_info() - updates info structure with transformations
-
-Version 0.81 [August, 1995]
- incorporated Tim Wegner's medium model code (thanks, Tim)
-
-Version 0.82 [September, 1995]
- [unspecified changes]
-
-Version 0.85 [December, 1995]
- added more medium model code (almost everything's a far)
- added i/o, error, and memory callback functions
- fixed some bugs (16-bit, 4-bit interlaced, etc.)
- added first run progressive reader (barely tested)
-
-Version 0.86 [January, 1996]
- fixed bugs
- improved documentation
-
-Version 0.87 [January, 1996]
- fixed medium model bugs
- fixed other bugs introduced in 0.85 and 0.86
- added some minor documentation
-
-Version 0.88 [January, 1996]
- fixed progressive bugs
- replaced tabs with spaces
- cleaned up documentation
- added callbacks for read/write and warning/error functions
-
-Version 0.89 [July, 1996]
- Added new initialization API to make libpng work better with shared libs
- we now have png_create_read_struct(), png_create_write_struct(),
- png_create_info_struct(), png_destroy_read_struct(), and
- png_destroy_write_struct() instead of the separate calls to
- malloc and png_read_init(), png_info_init(), and png_write_init()
- Changed warning/error callback functions to fix bug - this means you
- should use the new initialization API if you were using the old
- png_set_message_fn() calls, and that the old API no longer exists
- so that people are aware that they need to change their code
- Changed filter selection API to allow selection of multiple filters
- since it didn't work in previous versions of libpng anyways
- Optimized filter selection code
- Fixed png_set_background() to allow using an arbitrary RGB color for
- paletted images
- Fixed gamma and background correction for paletted images, so
- png_correct_palette is not needed unless you are correcting an
- external palette (you will need to #define PNG_CORRECT_PALETTE_SUPPORTED
- in pngconf.h) - if nobody uses this, it may disappear in the future.
- Fixed bug with Borland 64K memory allocation (Alexander Lehmann)
- Fixed bug in interlace handling (Smarasderagd, I think)
- Added more error checking for writing and image to reduce invalid files
- Separated read and write functions so that they won't both be linked
- into a binary when only reading or writing functionality is used
- New pngtest image also has interlacing and zTXt
- Updated documentation to reflect new API
-
-Version 0.90 [January, 1997]
- Made CRC errors/warnings on critical and ancillary chunks configurable
- libpng will use the zlib CRC routines by (compile-time) default
- Changed DOS small/medium model memory support - needs zlib 1.04 (Tim Wegner)
- Added external C++ wrapper statements to png.h (Gilles Dauphin)
- Allow PNG file to be read when some or all of file signature has already
- been read from the beginning of the stream. ****This affects the size
- of info_struct and invalidates all programs that use a shared libpng****
- Fixed png_filler() declarations
- Fixed? background color conversions
- Fixed order of error function pointers to match documentation
- Current chunk name is now available in png_struct to reduce the number
- of nearly identical error messages (will simplify multi-lingual
- support when available)
- Try to get ready for unknown-chunk callback functions:
- - previously read critical chunks are flagged, so the chunk handling
- routines can determine if the chunk is in the right place
- - all chunk handling routines have the same prototypes, so we will
- be able to handle all chunks via a callback mechanism
- Try to fix Linux "setjmp" buffer size problems
- Removed png_large_malloc, png_large_free, and png_realloc functions.
-
-Version 0.95 [March, 1997]
- Fixed bug in pngwutil.c allocating "up_row" twice and "avg_row" never
- Fixed bug in PNG file signature compares when start != 0
- Changed parameter type of png_set_filler(...filler...) from png_byte
- to png_uint_32
- Added test for MACOS to ensure that both math.h and fp.h are not #included
- Added macros for libpng to be compiled as a Windows DLL (Andreas Kupries)
- Added "packswap" transformation, which changes the endianness of
- packed-pixel bytes (Kevin Bracey)
- Added "strip_alpha" transformation, which removes the alpha channel of
- input images without using it (not necessarily a good idea)
- Added "swap_alpha" transformation, which puts the alpha channel in front
- of the color bytes instead of after
- Removed all implicit variable tests which assume NULL == 0 (I think)
- Changed several variables to "png_size_t" to show 16/32-bit limitations
- Added new pCAL chunk read/write support
- Added experimental filter selection weighting (Greg Roelofs)
- Removed old png_set_rgbx() and png_set_xrgb() functions that have been
- obsolete for about 2 years now (use png_set_filler() instead)
- Added macros to read 16- and 32-bit ints directly from buffer, to be
- used only on those systems that support it (namely PowerPC and 680x0)
- With some testing, this may become the default for MACOS/PPC systems.
- Only calculate CRC on data if we are going to use it
- Added macros for zTXt compression type PNG_zTXt_COMPRESSION_???
- Added macros for simple libpng debugging output selectable at compile time
- Removed PNG_READ_END_MODE in progressive reader (Smarasderagd)
- More description of info_struct in libpng.txt and png.h
- More instructions in example.c
- More chunk types tested in pngtest.c
- Renamed pngrcb.c to pngset.c, and all png_read_<chunk> functions to be
- png_set_<chunk>. We now have corresponding png_get_<chunk>
- functions in pngget.c to get information in info_ptr. This isolates
- the application from the internal organization of png_info_struct
- (good for shared library implementations).
-
-Version 0.96 [May, 1997]
- Fixed serious bug with < 8bpp images introduced in 0.95
- Fixed 256-color transparency bug (Greg Roelofs)
- Fixed up documentation (Greg Roelofs, Laszlo Nyul)
- Fixed "error" in pngconf.h for Linux setjmp() behavior
- Fixed DOS medium model support (Tim Wegner)
- Fixed png_check_keyword() for case with error in static string text
- Added read of CRC after IEND chunk for embedded PNGs (Laszlo Nyul)
- Added typecasts to quiet compiler errors
- Added more debugging info
-
-Version 0.97 [January, 1998]
- Removed PNG_USE_OWN_CRC capability
- Relocated png_set_crc_action from pngrutil.c to pngrtran.c
- Fixed typecasts of "new_key", etc. (Andreas Dilger)
- Added RFC 1152 [sic] date support
- Fixed bug in gamma handling of 4-bit grayscale
- Added 2-bit grayscale gamma handling (Glenn R-P)
- Added more typecasts. 65536L becomes (png_uint_32)65536L, etc. (Glenn R-P)
- Minor corrections in libpng.txt
- Added simple sRGB support (Glenn R-P)
- Easier conditional compiling, e.g.,
- define PNG_READ/WRITE_NOT_FULLY_SUPPORTED;
- all configurable options can be selected from command-line instead
- of having to edit pngconf.h (Glenn R-P)
- Fixed memory leak in pngwrite.c (free info_ptr->text) (Glenn R-P)
- Added more conditions for png_do_background, to avoid changing
- black pixels to background when a background is supplied and
- no pixels are transparent
- Repaired PNG_NO_STDIO behavior
- Tested NODIV support and made it default behavior (Greg Roelofs)
- Added "-m" option and PNGTEST_DEBUG_MEMORY to pngtest (John Bowler)
- Regularized version numbering scheme and bumped shared-library major
- version number to 2 to avoid problems with libpng 0.89 apps
- (Greg Roelofs)
-
-Version 0.98 [January, 1998]
- Cleaned up some typos in libpng.txt and in code documentation
- Fixed memory leaks in pCAL chunk processing (Glenn R-P and John Bowler)
- Cosmetic change "display_gamma" to "screen_gamma" in pngrtran.c
- Changed recommendation about file_gamma for PC images to .51 from .45,
- in example.c and libpng.txt, added comments to distinguish between
- screen_gamma, viewing_gamma, and display_gamma.
- Changed all references to RFC1152 to read RFC1123 and changed the
- PNG_TIME_RFC1152_SUPPORTED macro to PNG_TIME_RFC1123_SUPPORTED
- Added png_invert_alpha capability (Glenn R-P -- suggestion by Jon Vincent)
- Changed srgb_intent from png_byte to int to avoid compiler bugs
-
-Version 0.99 [January 30, 1998]
- Free info_ptr->text instead of end_info_ptr->text in pngread.c (John Bowler)
- Fixed a longstanding "packswap" bug in pngtrans.c
- Fixed some inconsistencies in pngconf.h that prevented compiling with
- PNG_READ_GAMMA_SUPPORTED and PNG_READ_hIST_SUPPORTED undefined
- Fixed some typos and made other minor rearrangement of libpng.txt (Andreas)
- Changed recommendation about file_gamma for PC images to .50 from .51 in
- example.c and libpng.txt, and changed file_gamma for sRGB images to .45
- Added a number of functions to access information from the png structure
- png_get_image_height(), etc. (Glenn R-P, suggestion by Brad Pettit)
- Added TARGET_MACOS similar to zlib-1.0.8
- Define PNG_ALWAYS_EXTERN when __MWERKS__ && WIN32 are defined
- Added type casting to all png_malloc() function calls
-
-Version 0.99a [January 31, 1998]
- Added type casts and parentheses to all returns that return a value.(Tim W.)
-
-Version 0.99b [February 4, 1998]
- Added type cast png_uint_32 on malloc function calls where needed.
- Changed type of num_hist from png_uint_32 to int (same as num_palette).
- Added checks for rowbytes overflow, in case png_size_t is less than 32 bits.
- Renamed makefile.elf to makefile.lnx.
-
-Version 0.99c [February 7, 1998]
- More type casting. Removed erroneous overflow test in pngmem.c.
- Added png_buffered_memcpy() and png_buffered_memset(), apply them to rowbytes.
- Added UNIX manual pages libpng.3 (incorporating libpng.txt) and png.5.
-
-Version 0.99d [February 11, 1998]
- Renamed "far_to_near()" "png_far_to_near()"
- Revised libpng.3
- Version 99c "buffered" operations didn't work as intended. Replaced them
- with png_memcpy_check() and png_memset_check().
- Added many "if (png_ptr == NULL) return" to quell compiler warnings about
- unused png_ptr, mostly in pngget.c and pngset.c.
- Check for overlength tRNS chunk present when indexed-color PLTE is read.
- Cleaned up spelling errors in libpng.3/libpng.txt
- Corrected a problem with png_get_tRNS() which returned undefined trans array
-
-Version 0.99e [February 28, 1998]
- Corrected png_get_tRNS() again.
- Add parentheses for easier reading of pngget.c, fixed "||" should be "&&".
- Touched up example.c to make more of it compileable, although the entire
- file still can't be compiled (Willem van Schaik)
- Fixed a bug in png_do_shift() (Bryan Tsai)
- Added a space in png.h prototype for png_write_chunk_start()
- Replaced pngtest.png with one created with zlib 1.1.1
- Changed pngtest to report PASS even when file size is different (Jean-loup G.)
- Corrected some logic errors in png_do_invert_alpha() (Chris Patterson)
-
-Version 0.99f [March 5, 1998]
- Corrected a bug in pngpread() introduced in version 99c (Kevin Bracey)
- Moved makefiles into a "scripts" directory, and added INSTALL instruction file
- Added makefile.os2 and pngos2.def (A. Zabolotny) and makefile.s2x (W. Sebok)
- Added pointers to "note on libpng versions" in makefile.lnx and README
- Added row callback feature when reading and writing nonprogressive rows
- and added a test of this feature in pngtest.c
- Added user transform callbacks, with test of the feature in pngtest.c
-
-Version 0.99g [March 6, 1998, morning]
- Minor changes to pngtest.c to suppress compiler warnings.
- Removed "beta" language from documentation.
-
-Version 0.99h [March 6, 1998, evening]
- Minor changes to previous minor changes to pngtest.c
- Changed PNG_READ_NOT_FULLY_SUPPORTED to PNG_READ_TRANSFORMS_NOT_SUPPORTED
- and added PNG_PROGRESSIVE_READ_NOT_SUPPORTED macro
- Added user transform capability
-
-Version 1.00 [March 7, 1998]
- Changed several typedefs in pngrutil.c
- Added makefile.wat (Pawel Mrochen), updated makefile.tc3 (Willem van Schaik)
- Replaced "while(1)" with "for(;;)"
- Added PNGARG() to prototypes in pngtest.c and removed some prototypes
- Updated some of the makefiles (Tom Lane)
- Changed some typedefs (s_start, etc.) in pngrutil.c
- Fixed dimensions of "short_months" array in pngwrite.c
- Replaced ansi2knr.c with the one from jpeg-v6
-
-Version 1.0.0 [March 8, 1998]
- Changed name from 1.00 to 1.0.0 (Adam Costello)
- Added smakefile.ppc (with SCOPTIONS.ppc) for Amiga PPC (Andreas Kleinert)
-
-Version 1.0.0a [March 9, 1998]
- Fixed three bugs in pngrtran.c to make gamma+background handling consistent
- (Greg Roelofs)
- Changed format of the PNG_LIBPNG_VER integer to xyyzz instead of xyz
- for major, minor, and bugfix releases. This is 10001. (Adam Costello,
- Tom Lane)
- Make months range from 1-12 in png_convert_to_rfc1123
-
-Version 1.0.0b [March 13, 1998]
- Quieted compiler complaints about two empty "for" loops in pngrutil.c
- Minor changes to makefile.s2x
- Removed #ifdef/#endif around a png_free() in pngread.c
-
-Version 1.0.1 [March 14, 1998]
- Changed makefile.s2x to reduce security risk of using a relative pathname
- Fixed some typos in the documentation (Greg).
- Fixed a problem with value of "channels" returned by png_read_update_info()
-
-Version 1.0.1a [April 21, 1998]
- Optimized Paeth calculations by replacing abs() function calls with intrinsics
- plus other loop optimizations. Improves avg decoding speed by about 20%.
- Commented out i386istic "align" compiler flags in makefile.lnx.
- Reduced the default warning level in some makefiles, to make them consistent.
- Removed references to IJG and JPEG in the ansi2knr.c copyright statement.
- Fixed a bug in png_do_strip_filler with XXRRGGBB => RRGGBB transformation.
- Added grayscale and 16-bit capability to png_do_read_filler().
- Fixed a bug in pngset.c, introduced in version 0.99c, that sets rowbytes
- too large when writing an image with bit_depth < 8 (Bob Dellaca).
- Corrected some bugs in the experimental weighted filtering heuristics.
- Moved a misplaced pngrutil code block that truncates tRNS if it has more
- than num_palette entries -- test was done before num_palette was defined.
- Fixed a png_convert_to_rfc1123() bug that converts day 31 to 0 (Steve Eddins).
- Changed compiler flags in makefile.wat for better optimization
- (Pawel Mrochen).
-
-Version 1.0.1b [May 2, 1998]
- Relocated png_do_gray_to_rgb() within png_do_read_transformations() (Greg).
- Relocated the png_composite macros from pngrtran.c to png.h (Greg).
- Added makefile.sco (contributed by Mike Hopkirk).
- Fixed two bugs (missing definitions of "istop") introduced in libpng-1.0.1a.
- Fixed a bug in pngrtran.c that would set channels=5 under some circumstances.
- More work on the Paeth-filtering, achieving imperceptible speedup
- (A Kleinert).
- More work on loop optimization which may help when compiled with C++
- compilers.
- Added warnings when people try to use transforms they've defined out.
- Collapsed 4 "i" and "c" loops into single "i" loops in pngrtran and pngwtran.
- Revised paragraph about png_set_expand() in libpng.txt and libpng.3 (Greg)
-
-Version 1.0.1c [May 11, 1998]
- Fixed a bug in pngrtran.c (introduced in libpng-1.0.1a) where the masks for
- filler bytes should have been 0xff instead of 0xf.
- Added max_pixel_depth=32 in pngrutil.c when using FILLER with palette images.
- Moved PNG_WRITE_WEIGHTED_FILTER_SUPPORTED and PNG_WRITE_FLUSH_SUPPORTED
- out of the PNG_WRITE_TRANSFORMS_NOT_SUPPORTED block of pngconf.h
- Added "PNG_NO_WRITE_TRANSFORMS" etc., as alternatives for *_NOT_SUPPORTED,
- for consistency, in pngconf.h
- Added individual "ifndef PNG_NO_[CAPABILITY]" in pngconf.h to make it easier
- to remove unwanted capabilities via the compile line
- Made some corrections to grammar (which, it's) in documentation (Greg).
- Corrected example.c, use of row_pointers in png_write_image().
-
-Version 1.0.1d [May 24, 1998]
- Corrected several statements that used side effects illegally in pngrutil.c
- and pngtrans.c, that were introduced in version 1.0.1b
- Revised png_read_rows() to avoid repeated if-testing for NULL (A Kleinert)
- More corrections to example.c, use of row_pointers in png_write_image()
- and png_read_rows().
- Added pngdll.mak and pngdef.pas to scripts directory, contributed by
- Bob Dellaca, to make a png32bd.dll with Borland C++ 4.5
- Fixed error in example.c with png_set_text: num_text is 3, not 2 (Guido V.)
- Changed several loops from count-down to count-up, for consistency.
-
-Version 1.0.1e [June 6, 1998]
- Revised libpng.txt and libpng.3 description of png_set_read|write_fn(), and
- added warnings when people try to set png_read_fn and png_write_fn in
- the same structure.
- Added a test such that png_do_gamma will be done when num_trans==0
- for truecolor images that have defined a background. This corrects an
- error that was introduced in libpng-0.90 that can cause gamma processing
- to be skipped.
- Added tests in png.h to include "trans" and "trans_values" in structures
- when PNG_READ_BACKGROUND_SUPPORTED or PNG_READ_EXPAND_SUPPORTED is defined.
- Add png_free(png_ptr->time_buffer) in png_destroy_read_struct()
- Moved png_convert_to_rfc_1123() from pngwrite.c to png.c
- Added capability for user-provided malloc_fn() and free_fn() functions,
- and revised pngtest.c to demonstrate their use, replacing the
- PNGTEST_DEBUG_MEM feature.
- Added makefile.w32, for Microsoft C++ 4.0 and later (Tim Wegner).
-
-Version 1.0.2 [June 14, 1998]
- Fixed two bugs in makefile.bor .
-
-Version 1.0.2a [December 30, 1998]
- Replaced and extended code that was removed from png_set_filler() in 1.0.1a.
- Fixed a bug in png_do_filler() that made it fail to write filler bytes in
- the left-most pixel of each row (Kevin Bracey).
- Changed "static pngcharp tIME_string" to "static char tIME_string[30]"
- in pngtest.c (Duncan Simpson).
- Fixed a bug in pngtest.c that caused pngtest to try to write a tIME chunk
- even when no tIME chunk was present in the source file.
- Fixed a problem in pngrutil.c: gray_to_rgb didn't always work with 16-bit.
- Fixed a problem in png_read_push_finish_row(), which would not skip some
- passes that it should skip, for images that are less than 3 pixels high.
- Interchanged the order of calls to png_do_swap() and png_do_shift()
- in pngwtran.c (John Cromer).
- Added #ifdef PNG_DEBUG/#endif surrounding use of PNG_DEBUG in png.h .
- Changed "bad adaptive filter type" from error to warning in pngrutil.c .
- Fixed a documentation error about default filtering with 8-bit indexed-color.
- Separated the PNG_NO_STDIO macro into PNG_NO_STDIO and PNG_NO_CONSOLE_IO
- (L. Peter Deutsch).
- Added png_set_rgb_to_gray() and png_get_rgb_to_gray_status() functions.
- Added png_get_copyright() and png_get_header_version() functions.
- Revised comments on png_set_progressive_read_fn() in libpng.txt and example.c
- Added information about debugging in libpng.txt and libpng.3 .
- Changed "ln -sf" to "ln -s -f" in makefile.s2x, makefile.lnx, and
- makefile.sco.
- Removed lines after Dynamic Dependencies" in makefile.aco .
- Revised makefile.dec to make a shared library (Jeremie Petit).
- Removed trailing blanks from all files.
-
-Version 1.0.2a [January 6, 1999]
- Removed misplaced #endif and #ifdef PNG_NO_EXTERN near the end of png.h
- Added "if" tests to silence complaints about unused png_ptr in png.h and png.c
- Changed "check_if_png" function in example.c to return true (nonzero) if PNG.
- Changed libpng.txt to demonstrate png_sig_cmp() instead of png_check_sig()
- which is obsolete.
-
-Version 1.0.3 [January 14, 1999]
- Added makefile.hux, for Hewlett Packard HPUX 10.20 and 11.00 (Jim Rice)
- Added a statement of Y2K compliance in png.h, libpng.3, and Y2KINFO.
-
-Version 1.0.3a [August 12, 1999]
- Added check for PNG_READ_INTERLACE_SUPPORTED in pngread.c; issue a warning
- if an attempt is made to read an interlaced image when it's not supported.
- Added check if png_ptr->trans is defined before freeing it in pngread.c
- Modified the Y2K statement to include versions back to version 0.71
- Fixed a bug in the check for valid IHDR bit_depth/color_types in pngrutil.c
- Modified makefile.wat (added -zp8 flag, ".symbolic", changed some comments)
- Replaced leading blanks with tab characters in makefile.hux
- Changed "dworkin.wustl.edu" to "ccrc.wustl.edu" in various documents.
- Changed (float)red and (float)green to (double)red, (double)green
- in png_set_rgb_to_gray() to avoid "promotion" problems in AIX.
- Fixed a bug in pngconf.h that omitted <stdio.h> when PNG_DEBUG==0 (K Bracey).
- Reformatted libpng.3 and libpngpf.3 with proper fonts (script by J. vanZandt).
- Updated documentation to refer to the PNG-1.2 specification.
- Removed ansi2knr.c and left pointers to the latest source for ansi2knr.c
- in makefile.knr, INSTALL, and README (L. Peter Deutsch)
- Fixed bugs in calculation of the length of rowbytes when adding alpha
- channels to 16-bit images, in pngrtran.c (Chris Nokleberg)
- Added function png_set_user_transform_info() to store user_transform_ptr,
- user_depth, and user_channels into the png_struct, and a function
- png_get_user_transform_ptr() to retrieve the pointer (Chris Nokleberg)
- Added function png_set_empty_plte_permitted() to make libpng useable
- in MNG applications.
- Corrected the typedef for png_free_ptr in png.h (Jesse Jones).
- Correct gamma with srgb is 45455 instead of 45000 in pngrutil.c, to be
- consistent with PNG-1.2, and allow variance of 500 before complaining.
- Added assembler code contributed by Intel in file pngvcrd.c and modified
- makefile.w32 to use it (Nirav Chhatrapati, INTEL Corporation,
- Gilles Vollant)
- Changed "ln -s -f" to "ln -f -s" in the makefiles to make Solaris happy.
- Added some aliases for png_set_expand() in pngrtran.c, namely
- png_set_expand_PLTE(), png_set_expand_depth(), and png_set_expand_tRNS()
- (Greg Roelofs, in "PNG: The Definitive Guide").
- Added makefile.beo for BEOS on X86, contributed by Sander Stok.
-
-Version 1.0.3b [August 26, 1999]
- Replaced 2147483647L several places with PNG_MAX_UINT macro, defined in png.h
- Changed leading blanks to tabs in all makefiles.
- Define PNG_USE_PNGVCRD in makefile.w32, to get MMX assembler code.
- Made alternate versions of png_set_expand() in pngrtran.c, namely
- png_set_gray_1_2_4_to_8, png_set_palette_to_rgb, and png_set_tRNS_to_alpha
- (Greg Roelofs, in "PNG: The Definitive Guide"). Deleted the 1.0.3a aliases.
- Relocated start of 'extern "C"' block in png.h so it doesn't include pngconf.h
- Revised calculation of num_blocks in pngmem.c to avoid a potentially
- negative shift distance, whose results are undefined in the C language.
- Added a check in pngset.c to prevent writing multiple tIME chunks.
- Added a check in pngwrite.c to detect invalid small window_bits sizes.
-
-Version 1.0.3d [September 4, 1999]
- Fixed type casting of igamma in pngrutil.c
- Added new png_expand functions to scripts/pngdef.pas and pngos2.def
- Added a demo read_user_transform_fn that examines the row filters in pngtest.c
-
-Version 1.0.4 [September 24, 1999]
- Define PNG_ALWAYS_EXTERN in pngconf.h if __STDC__ is defined
- Delete #define PNG_INTERNAL and include "png.h" from pngasmrd.h
- Made several minor corrections to pngtest.c
- Renamed the makefiles with longer but more user friendly extensions.
- Copied the PNG copyright and license to a separate LICENSE file.
- Revised documentation, png.h, and example.c to remove reference to
- "viewing_gamma" which no longer appears in the PNG specification.
- Revised pngvcrd.c to use MMX code for interlacing only on the final pass.
- Updated pngvcrd.c to use the faster C filter algorithms from libpng-1.0.1a
- Split makefile.win32vc into two versions, makefile.vcawin32 (uses MMX
- assembler code) and makefile.vcwin32 (doesn't).
- Added a CPU timing report to pngtest.c (enabled by defining PNGTEST_TIMING)
- Added a copy of pngnow.png to the distribution.
-
-Version 1.0.4a [September 25, 1999]
- Increase max_pixel_depth in pngrutil.c if a user transform needs it.
- Changed several division operations to right-shifts in pngvcrd.c
-
-Version 1.0.4b [September 30, 1999]
- Added parentheses in line 3732 of pngvcrd.c
- Added a comment in makefile.linux warning about buggy -O3 in pgcc 2.95.1
-
-Version 1.0.4c [October 1, 1999]
- Added a "png_check_version" function in png.c and pngtest.c that will generate
- a helpful compiler error if an old png.h is found in the search path.
- Changed type of png_user_transform_depth|channels from int to png_byte.
-
-Version 1.0.4d [October 6, 1999]
- Changed 0.45 to 0.45455 in png_set_sRGB()
- Removed unused PLTE entries from pngnow.png
- Re-enabled some parts of pngvcrd.c (png_combine_row) that work properly.
-
-Version 1.0.4e [October 10, 1999]
- Fixed sign error in pngvcrd.c (Greg Roelofs)
- Replaced some instances of memcpy with simple assignments in pngvcrd (GR-P)
-
-Version 1.0.4f [October 15, 1999]
- Surrounded example.c code with #if 0 .. #endif to prevent people from
- inadvertently trying to compile it.
- Changed png_get_header_version() from a function to a macro in png.h
- Added type casting mostly in pngrtran.c and pngwtran.c
- Removed some pointless "ptr = NULL" in pngmem.c
- Added a "contrib" directory containing the source code from Greg's book.
-
-Version 1.0.5 [October 15, 1999]
- Minor editing of the INSTALL and README files.
-
-Version 1.0.5a [October 23, 1999]
- Added contrib/pngsuite and contrib/pngminus (Willem van Schaik)
- Fixed a typo in the png_set_sRGB() function call in example.c (Jan Nijtmans)
- Further optimization and bugfix of pngvcrd.c
- Revised pngset.c so that it does not allocate or free memory in the user's
- text_ptr structure. Instead, it makes its own copy.
- Created separate write_end_info_struct in pngtest.c for a more severe test.
- Added code in pngwrite.c to free info_ptr->text[i].key to stop a memory leak.
-
-Version 1.0.5b [November 23, 1999]
- Moved PNG_FLAG_HAVE_CHUNK_HEADER, PNG_FLAG_BACKGROUND_IS_GRAY and
- PNG_FLAG_WROTE_tIME from flags to mode.
- Added png_write_info_before_PLTE() function.
- Fixed some typecasting in contrib/gregbook/*.c
- Updated scripts/makevms.com and added makevms.com to contrib/gregbook
- and contrib/pngminus (Martin Zinser)
-
-Version 1.0.5c [November 26, 1999]
- Moved png_get_header_version from png.h to png.c, to accommodate ansi2knr.
- Removed all global arrays (according to PNG_NO_GLOBAL_ARRAYS macro), to
- accommodate making DLL's: Moved usr_png_ver from global variable to function
- png_get_header_ver() in png.c. Moved png_sig to png_sig_bytes in png.c and
- eliminated use of png_sig in pngwutil.c. Moved the various png_CHNK arrays
- into pngtypes.h. Eliminated use of global png_pass arrays. Declared the
- png_CHNK and png_pass arrays to be "const". Made the global arrays
- available to applications (although none are used in libpng itself) when
- PNG_NO_GLOBAL_ARRAYS is not defined or when PNG_GLOBAL_ARRAYS is defined.
- Removed some extraneous "-I" from contrib/pngminus/makefile.std
- Changed the PNG_sRGB_INTENT macros in png.h to be consistent with PNG-1.2.
- Change PNG_SRGB_INTENT to PNG_sRGB_INTENT in libpng.txt and libpng.3
-
-Version 1.0.5d [November 29, 1999]
- Add type cast (png_const_charp) two places in png.c
- Eliminated pngtypes.h; use macros instead to declare PNG_CHNK arrays.
- Renamed "PNG_GLOBAL_ARRAYS" to "PNG_USE_GLOBAL_ARRAYS" and made available
- to applications a macro "PNG_USE_LOCAL_ARRAYS".
- comment out (with #ifdef) all the new declarations when
- PNG_USE_GLOBAL_ARRAYS is defined.
- Added PNG_EXPORT_VAR macro to accommodate making DLL's.
-
-Version 1.0.5e [November 30, 1999]
- Added iCCP, iTXt, and sPLT support; added "lang" member to the png_text
- structure; refactored the inflate/deflate support to make adding new chunks
- with trailing compressed parts easier in the future, and added new functions
- png_free_iCCP, png_free_pCAL, png_free_sPLT, png_free_text, png_get_iCCP,
- png_get_spalettes, png_set_iCCP, png_set_spalettes (Eric S. Raymond).
- NOTE: Applications that write text chunks MUST define png_text->lang
- before calling png_set_text(). It must be set to NULL if you want to
- write tEXt or zTXt chunks. If you want your application to be able to
- run with older versions of libpng, use
-
- #ifdef PNG_iTXt_SUPPORTED
- png_text[i].lang = NULL;
- #endif
-
- Changed png_get_oFFs() and png_set_oFFs() to use signed rather than unsigned
- offsets (Eric S. Raymond).
- Combined PNG_READ_cHNK_SUPPORTED and PNG_WRITE_cHNK_SUPPORTED macros into
- PNG_cHNK_SUPPORTED and combined the three types of PNG_text_SUPPORTED
- macros, leaving the separate macros also available.
- Removed comments on #endifs at the end of many short, non-nested #if-blocks.
-
-Version 1.0.5f [December 6, 1999]
- Changed makefile.solaris to issue a warning about potential problems when
- the ucb "ld" is in the path ahead of the ccs "ld".
- Removed "- [date]" from the "synopsis" line in libpng.3 and libpngpf.3.
- Added sCAL chunk support (Eric S. Raymond).
-
-Version 1.0.5g [December 7, 1999]
- Fixed "png_free_spallettes" typo in png.h
- Added code to handle new chunks in pngpread.c
- Moved PNG_CHNK string macro definitions outside of PNG_NO_EXTERN block
- Added "translated_key" to png_text structure and png_write_iTXt().
- Added code in pngwrite.c to work around a newly discovered zlib bug.
-
-Version 1.0.5h [December 10, 1999]
- NOTE: regarding the note for version 1.0.5e, the following must also
- be included in your code:
- png_text[i].translated_key = NULL;
- Unknown chunk handling is now supported.
- Option to eliminate all floating point support was added. Some new
- fixed-point functions such as png_set_gAMA_fixed() were added.
- Expanded tabs and removed trailing blanks in source files.
-
-Version 1.0.5i [December 13, 1999]
- Added some type casts to silence compiler warnings.
- Renamed "png_free_spalette" to "png_free_spalettes" for consistency.
- Removed leading blanks from a #define in pngvcrd.c
- Added some parameters to the new png_set_keep_unknown_chunks() function.
- Added a test for up->location != 0 in the first instance of writing
- unknown chunks in pngwrite.c
- Changed "num" to "i" in png_free_spalettes() and png_free_unknowns() to
- prevent recursion.
- Added png_free_hIST() function.
- Various patches to fix bugs in the sCAL and integer cHRM processing,
- and to add some convenience macros for use with sCAL.
-
-Version 1.0.5j [December 21, 1999]
- Changed "unit" parameter of png_write_sCAL from png_byte to int, to work
- around buggy compilers.
- Added new type "png_fixed_point" for integers that hold float*100000 values
- Restored backward compatibility of tEXt/zTXt chunk processing:
- Restored the first four members of png_text to the same order as v.1.0.5d.
- Added members "lang_key" and "itxt_length" to png_text struct. Set
- text_length=0 when "text" contains iTXt data. Use the "compression"
- member to distinguish among tEXt/zTXt/iTXt types. Added
- PNG_ITXT_COMPRESSION_NONE (1) and PNG_ITXT_COMPRESSION_zTXt(2) macros.
- The "Note" above, about backward incompatibility of libpng-1.0.5e, no
- longer applies.
- Fixed png_read|write_iTXt() to read|write parameters in the right order,
- and to write the iTXt chunk after IDAT if it appears in the end_ptr.
- Added pnggccrd.c, version of pngvcrd.c Intel assembler for gcc (Greg Roelofs)
- Reversed the order of trying to write floating-point and fixed-point gAMA.
-
-Version 1.0.5k [December 27, 1999]
- Added many parentheses, e.g., "if (a && b & c)" becomes "if (a && (b & c))"
- Added png_handle_as_unknown() function (Glenn)
- Added png_free_chunk_list() function and chunk_list and num_chunk_list members
- of png_ptr.
- Eliminated erroneous warnings about multiple sPLT chunks and sPLT-after-PLTE.
- Fixed a libpng-1.0.5h bug in pngrutil.c that was issuing erroneous warnings
- about ignoring incorrect gAMA with sRGB (gAMA was in fact not ignored)
- Added png_free_tRNS(); png_set_tRNS() now malloc's its own trans array (ESR).
- Define png_get_int_32 when oFFs chunk is supported as well as when pCAL is.
- Changed type of proflen from png_int_32 to png_uint_32 in png_get_iCCP().
-
-Version 1.0.5l [January 1, 2000]
- Added functions png_set_read_user_chunk_fn() and png_get_user_chunk_ptr()
- for setting a callback function to handle unknown chunks and for
- retrieving the associated user pointer (Glenn).
-
-Version 1.0.5m [January 7, 2000]
- Added high-level functions png_read_png(), png_write_png(), png_free_pixels().
-
-Version 1.0.5n [January 9, 2000]
- Added png_free_PLTE() function, and modified png_set_PLTE() to malloc its
- own memory for info_ptr->palette. This makes it safe for the calling
- application to free its copy of the palette any time after it calls
- png_set_PLTE().
-
-Version 1.0.5o [January 20, 2000]
- Cosmetic changes only (removed some trailing blanks and TABs)
-
-Version 1.0.5p [January 31, 2000]
- Renamed pngdll.mak to makefile.bd32
- Cosmetic changes in pngtest.c
-
-Version 1.0.5q [February 5, 2000]
- Relocated the makefile.solaris warning about PATH problems.
- Fixed pngvcrd.c bug by pushing/popping registers in mmxsupport (Bruce Oberg)
- Revised makefile.gcmmx
- Added PNG_SETJMP_SUPPORTED, PNG_SETJMP_NOT_SUPPORTED, and PNG_ABORT() macros
-
-Version 1.0.5r [February 7, 2000]
- Removed superfluous prototype for png_get_itxt from png.h
- Fixed a bug in pngrtran.c that improperly expanded the background color.
- Return *num_text=0 from png_get_text() when appropriate, and fix documentation
- of png_get_text() in libpng.txt/libpng.3.
-
-Version 1.0.5s [February 18, 2000]
- Added "png_jmp_env()" macro to pngconf.h, to help people migrate to the
- new error handler that's planned for the next libpng release, and changed
- example.c, pngtest.c, and contrib programs to use this macro.
- Revised some of the DLL-export macros in pngconf.h (Greg Roelofs)
- Fixed a bug in png_read_png() that caused it to fail to expand some images
- that it should have expanded.
- Fixed some mistakes in the unused and undocumented INCH_CONVERSIONS functions
- in pngget.c
- Changed the allocation of palette, history, and trans arrays back to
- the version 1.0.5 method (linking instead of copying) which restores
- backward compatibility with version 1.0.5. Added some remarks about
- that in example.c. Added "free_me" member to info_ptr and png_ptr
- and added png_free_data() function.
- Updated makefile.linux and makefile.gccmmx to make directories conditionally.
- Made cosmetic changes to pngasmrd.h
- Added png_set_rows() and png_get_rows(), for use with png_read|write_png().
- Modified png_read_png() to allocate info_ptr->row_pointers only if it
- hasn't already been allocated.
-
-Version 1.0.5t [March 4, 2000]
- Changed png_jmp_env() migration aiding macro to png_jmpbuf().
- Fixed "interlace" typo (should be "interlaced") in contrib/gregbook/read2-x.c
- Fixed bug with use of PNG_BEFORE_IHDR bit in png_ptr->mode, introduced when
- PNG_FLAG_HAVE_CHUNK_HEADER was moved into png_ptr->mode in version 1.0.5b
- Files in contrib/gregbook were revised to use png_jmpbuf() and to select
- a 24-bit visual if one is available, and to allow abbreviated options.
- Files in contrib/pngminus were revised to use the png_jmpbuf() macro.
- Removed spaces in makefile.linux and makefile.gcmmx, introduced in 1.0.5s
-
-Version 1.0.5u [March 5, 2000]
- Simplified the code that detects old png.h in png.c and pngtest.c
- Renamed png_spalette (_p, _pp) to png_sPLT_t (_tp, _tpp)
- Increased precision of rgb_to_gray calculations from 8 to 15 bits and
- added png_set_rgb_to_gray_fixed() function.
- Added makefile.bc32 (32-bit Borland C++, C mode)
-
-Version 1.0.5v [March 11, 2000]
- Added some parentheses to the png_jmpbuf macro definition.
- Updated references to the zlib home page, which has moved to freesoftware.com.
- Corrected bugs in documentation regarding png_read_row() and png_write_row().
- Updated documentation of png_rgb_to_gray calculations in libpng.3/libpng.txt.
- Renamed makefile.borland,turboc3 back to makefile.bor,tc3 as in version 1.0.3,
- revised borland makefiles; added makefile.ibmvac3 and makefile.gcc (Cosmin)
-
-Version 1.0.6 [March 20, 2000]
- Minor revisions of makefile.bor, libpng.txt, and gregbook/rpng2-win.c
- Added makefile.sggcc (SGI IRIX with gcc)
-
-Version 1.0.6d [April 7, 2000]
- Changed sprintf() to strcpy() in png_write_sCAL_s() to work without STDIO
- Added data_length parameter to png_decompress_chunk() function
- Revised documentation to remove reference to abandoned png_free_chnk functions
- Fixed an error in png_rgb_to_gray_fixed()
- Revised example.c, usage of png_destroy_write_struct().
- Renamed makefile.ibmvac3 to makefile.ibmc, added libpng.icc IBM project file
- Added a check for info_ptr->free_me&PNG_FREE_TEXT when freeing text in png.c
- Simplify png_sig_bytes() function to remove use of non-ISO-C strdup().
-
-Version 1.0.6e [April 9, 2000]
- Added png_data_freer() function.
- In the code that checks for over-length tRNS chunks, added check of
- info_ptr->num_trans as well as png_ptr->num_trans (Matthias Benckmann)
- Minor revisions of libpng.txt/libpng.3.
- Check for existing data and free it if the free_me flag is set, in png_set_*()
- and png_handle_*().
- Only define PNG_WEIGHTED_FILTERS_SUPPORTED when PNG_FLOATING_POINT_SUPPORTED
- is defined.
- Changed several instances of PNG_NO_CONSOLE_ID to PNG_NO_STDIO in pngrutil.c
- and mentioned the purposes of the two macros in libpng.txt/libpng.3.
-
-Version 1.0.6f [April 14, 2000]
- Revised png_set_iCCP() and png_set_rows() to avoid prematurely freeing data.
- Add checks in png_set_text() for NULL members of the input text structure.
- Revised libpng.txt/libpng.3.
- Removed superfluous prototype for png_set_iTXt from png.h
- Removed "else" from pngread.c, after png_error(), and changed "0" to "length".
- Changed several png_errors about malformed ancillary chunks to png_warnings.
-
-Version 1.0.6g [April 24, 2000]
- Added png_pass-* arrays to pnggccrd.c when PNG_USE_LOCAL_ARRAYS is defined.
- Relocated paragraph about png_set_background() in libpng.3/libpng.txt
- and other revisions (Matthias Benckmann)
- Relocated info_ptr->free_me, png_ptr->free_me, and other info_ptr and
- png_ptr members to restore binary compatibility with libpng-1.0.5
- (breaks compatibility with libpng-1.0.6).
-
-Version 1.0.6h [April 24, 2000]
- Changed shared library so-number pattern from 2.x.y.z to xy.z (this builds
- libpng.so.10 & libpng.so.10.6h instead of libpng.so.2 & libpng.so.2.1.0.6h)
- This is a temporary change for test purposes.
-
-Version 1.0.6i [May 2, 2000]
- Rearranged some members at the end of png_info and png_struct, to put
- unknown_chunks_num and free_me within the original size of the png_structs
- and free_me, png_read_user_fn, and png_free_fn within the original png_info,
- because some old applications allocate the structs directly instead of
- using png_create_*().
- Added documentation of user memory functions in libpng.txt/libpng.3
- Modified png_read_png so that it will use user_allocated row_pointers
- if present, unless free_me directs that it be freed, and added description
- of the use of png_set_rows() and png_get_rows() in libpng.txt/libpng.3.
- Added PNG_LEGACY_SUPPORTED macro, and #ifdef out all new (since version
- 1.00) members of png_struct and png_info, to regain binary compatibility
- when you define this macro. Capabilities lost in this event
- are user transforms (new in version 1.0.0),the user transform pointer
- (new in version 1.0.2), rgb_to_gray (new in 1.0.5), iCCP, sCAL, sPLT,
- the high-level interface, and unknown chunks support (all new in 1.0.6).
- This was necessary because of old applications that allocate the structs
- directly as authors were instructed to do in libpng-0.88 and earlier,
- instead of using png_create_*().
- Added modes PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT which
- can be used to detect codes that directly allocate the structs, and
- code to check these modes in png_read_init() and png_write_init() and
- generate a libpng error if the modes aren't set and PNG_LEGACY_SUPPORTED
- was not defined.
- Added makefile.intel and updated makefile.watcom (Pawel Mrochen)
-
-Version 1.0.6j [May 3, 2000]
- Overloaded png_read_init() and png_write_init() with macros that convert
- calls to png_read_init_2() or png_write_init_2() that check the version
- and structure sizes.
-
-Version 1.0.7beta11 [May 7, 2000]
- Removed the new PNG_CREATED_READ_STRUCT and PNG_CREATED_WRITE_STRUCT modes
- which are no longer used.
- Eliminated the three new members of png_text when PNG_LEGACY_SUPPORTED is
- defined or when neither PNG_READ_iTXt_SUPPORTED nor PNG_WRITE_iTXT_SUPPORTED
- is defined.
- Made PNG_NO_READ|WRITE_iTXt the default setting, to avoid memory
- overrun when old applications fill the info_ptr->text structure directly.
- Added PNGAPI macro, and added it to the definitions of all exported functions.
- Relocated version macro definitions ahead of the includes of zlib.h and
- pngconf.h in png.h.
-
-Version 1.0.7beta12 [May 12, 2000]
- Revised pngset.c to avoid a problem with expanding the png_debug macro.
- Deleted some extraneous defines from pngconf.h
- Made PNG_NO_CONSOLE_IO the default condition when PNG_BUILD_DLL is defined.
- Use MSC _RPTn debugging instead of fprintf if _MSC_VER is defined.
- Added png_access_version_number() function.
- Check for mask&PNG_FREE_CHNK (for TEXT, SCAL, PCAL) in png_free_data().
- Expanded libpng.3/libpng.txt information about png_data_freer().
-
-Version 1.0.7beta14 [May 17, 2000] (beta13 was not published)
- Changed pnggccrd.c and pngvcrd.c to handle bad adaptive filter types as
- warnings instead of errors, as pngrutil.c does.
- Set the PNG_INFO_IDAT valid flag in png_set_rows() so png_write_png()
- will actually write IDATs.
- Made the default PNG_USE_LOCAL_ARRAYS depend on PNG_DLL instead of WIN32.
- Make png_free_data() ignore its final parameter except when freeing data
- that can have multiple instances (text, sPLT, unknowns).
- Fixed a new bug in png_set_rows().
- Removed info_ptr->valid tests from png_free_data(), as in version 1.0.5.
- Added png_set_invalid() function.
- Fixed incorrect illustrations of png_destroy_write_struct() in example.c.
-
-Version 1.0.7beta15 [May 30, 2000]
- Revised the deliberately erroneous Linux setjmp code in pngconf.h to produce
- fewer error messages.
- Rearranged checks for Z_OK to check the most likely path first in pngpread.c
- and pngwutil.c.
- Added checks in pngtest.c for png_create_*() returning NULL, and mentioned
- in libpng.txt/libpng.3 the need for applications to check this.
- Changed names of png_default_*() functions in pngtest to pngtest_*().
- Changed return type of png_get_x|y_offset_*() from png_uint_32 to png_int_32.
- Fixed some bugs in the unused PNG_INCH_CONVERSIONS functions in pngget.c
- Set each pointer to NULL after freeing it in png_free_data().
- Worked around a problem in pngconf.h; AIX's strings.h defines an "index"
- macro that conflicts with libpng's png_color_16.index. (Dimitri
- Papadapoulos)
- Added "msvc" directory with MSVC++ project files (Simon-Pierre Cadieux).
-
-Version 1.0.7beta16 [June 4, 2000]
- Revised the workaround of AIX string.h "index" bug.
- Added a check for overlength PLTE chunk in pngrutil.c.
- Added PNG_NO_POINTER_INDEXING macro to use array-indexing instead of pointer
- indexing in pngrutil.c and pngwutil.c to accommodate a buggy compiler.
- Added a warning in png_decompress_chunk() when it runs out of data, e.g.
- when it tries to read an erroneous PhotoShop iCCP chunk.
- Added PNG_USE_DLL macro.
- Revised the copyright/disclaimer/license notice.
- Added contrib/msvctest directory
-
-Version 1.0.7rc1 [June 9, 2000]
- Corrected the definition of PNG_TRANSFORM_INVERT_ALPHA (0x0400 not 0x0200)
- Added contrib/visupng directory (Willem van Schaik)
-
-Version 1.0.7beta18 [June 23, 2000]
- Revised PNGAPI definition, and pngvcrd.c to work with __GCC__
- and do not redefine PNGAPI if it is passed in via a compiler directive.
- Revised visupng/PngFile.c to remove returns from within the Try block.
- Removed leading underscores from "_PNG_H" and "_PNG_SAVE_BSD_SOURCE" macros.
- Updated contrib/visupng/cexcept.h to version 1.0.0.
- Fixed bugs in pngwrite.c and pngwutil.c that prevented writing iCCP chunks.
-
-Version 1.0.7rc2 [June 28, 2000]
- Updated license to include disclaimers required by UCITA.
- Fixed "DJBPP" typo in pnggccrd.c introduced in beta18.
-
-Version 1.0.7 [July 1, 2000]
- Revised the definition of "trans_values" in libpng.3/libpng.txt
-
-Version 1.0.8beta1 [July 8, 2000]
- Added png_free(png_ptr, key) two places in pngpread.c to stop memory leaks.
- Changed PNG_NO_STDIO to PNG_NO_CONSOLE_IO, several places in pngrutil.c and
- pngwutil.c.
- Changed PNG_EXPORT_VAR to use PNG_IMPEXP, in pngconf.h.
- Removed unused "#include <assert.h>" from png.c
- Added WindowsCE support.
- Revised pnggccrd.c to work with gcc-2.95.2 and in the Cygwin environment.
-
-Version 1.0.8beta2 [July 10, 2000]
- Added project files to the wince directory and made further revisions
- of pngtest.c, pngrio.c, and pngwio.c in support of WindowsCE.
-
-Version 1.0.8beta3 [July 11, 2000]
- Only set the PNG_FLAG_FREE_TRNS or PNG_FREE_TRNS flag in png_handle_tRNS()
- for indexed-color input files to avoid potential double-freeing trans array
- under some unusual conditions; problem was introduced in version 1.0.6f.
- Further revisions to pngtest.c and files in the wince subdirectory.
-
-Version 1.0.8beta4 [July 14, 2000]
- Added the files pngbar.png and pngbar.jpg to the distribution.
- Added makefile.cygwin, and cygwin support in pngconf.h
- Added PNG_NO_ZALLOC_ZERO macro (makes png_zalloc skip zeroing memory)
-
-Version 1.0.8rc1 [July 16, 2000]
- Revised png_debug() macros and statements to eliminate compiler warnings.
-
-Version 1.0.8 [July 24, 2000]
- Added png_flush() in pngwrite.c, after png_write_IEND().
- Updated makefile.hpux to build a shared library.
-
-Version 1.0.9beta1 [November 10, 2000]
- Fixed typo in scripts/makefile.hpux
- Updated makevms.com in scripts and contrib/* and contrib/* (Martin Zinser)
- Fixed seqence-point bug in contrib/pngminus/png2pnm (Martin Zinser)
- Changed "cdrom.com" in documentation to "libpng.org"
- Revised pnggccrd.c to get it all working, and updated makefile.gcmmx (Greg).
- Changed type of "params" from voidp to png_voidp in png_read|write_png().
- Make sure PNGAPI and PNG_IMPEXP are defined in pngconf.h.
- Revised the 3 instances of WRITEFILE in pngtest.c.
- Relocated "msvc" and "wince" project subdirectories into "dll" subdirectory.
- Updated png.rc in dll/msvc project
- Revised makefile.dec to define and use LIBPATH and INCPATH
- Increased size of global png_libpng_ver[] array from 12 to 18 chars.
- Made global png_libpng_ver[], png_sig[] and png_pass_*[] arrays const.
- Removed duplicate png_crc_finish() from png_handle_bKGD() function.
- Added a warning when application calls png_read_update_info() multiple times.
- Revised makefile.cygwin
- Fixed bugs in iCCP support in pngrutil.c and pngwutil.c.
- Replaced png_set_empty_plte_permitted() with png_permit_mng_features().
-
-Version 1.0.9beta2 [November 19, 2000]
- Renamed the "dll" subdirectory "projects".
- Added borland project files to "projects" subdirectory.
- Set VS_FF_PRERELEASE and VS_FF_PATCHED flags in msvc/png.rc when appropriate.
- Add error message in png_set_compression_buffer_size() when malloc fails.
-
-Version 1.0.9beta3 [November 23, 2000]
- Revised PNG_LIBPNG_BUILD_TYPE macro in png.h, used in the msvc project.
- Removed the png_flush() in pngwrite.c that crashes some applications
- that don't set png_output_flush_fn.
- Added makefile.macosx and makefile.aix to scripts directory.
-
-Version 1.0.9beta4 [December 1, 2000]
- Change png_chunk_warning to png_warning in png_check_keyword().
- Increased the first part of msg buffer from 16 to 18 in png_chunk_error().
-
-Version 1.0.9beta5 [December 15, 2000]
- Added support for filter method 64 (for PNG datastreams embedded in MNG).
-
-Version 1.0.9beta6 [December 18, 2000]
- Revised png_set_filter() to accept filter method 64 when appropriate.
- Added new PNG_HAVE_PNG_SIGNATURE bit to png_ptr->mode and use it to
- help prevent applications from using MNG features in PNG datastreams.
- Added png_permit_mng_features() function.
- Revised libpng.3/libpng.txt. Changed "filter type" to "filter method".
-
-Version 1.0.9rc1 [December 23, 2000]
- Revised test for PNG_HAVE_PNG_SIGNATURE in pngrutil.c
- Fixed error handling of unknown compression type in png_decompress_chunk().
- In pngconf.h, define __cdecl when _MSC_VER is defined.
-
-Version 1.0.9beta7 [December 28, 2000]
- Changed PNG_TEXT_COMPRESSION_zTXt to PNG_COMPRESSION_TYPE_BASE several places.
- Revised memory management in png_set_hIST and png_handle_hIST in a backward
- compatible manner. PLTE and tRNS were revised similarly.
- Revised the iCCP chunk reader to ignore trailing garbage.
-
-Version 1.0.9beta8 [January 12, 2001]
- Moved pngasmrd.h into pngconf.h.
- Improved handling of out-of-spec garbage iCCP chunks generated by PhotoShop.
-
-Version 1.0.9beta9 [January 15, 2001]
- Added png_set_invalid, png_permit_mng_features, and png_mmx_supported to
- wince and msvc project module definition files.
- Minor revision of makefile.cygwin.
- Fixed bug with progressive reading of narrow interlaced images in pngpread.c
-
-Version 1.0.9beta10 [January 16, 2001]
- Do not typedef png_FILE_p in pngconf.h when PNG_NO_STDIO is defined.
- Fixed "png_mmx_supported" typo in project definition files.
-
-Version 1.0.9beta11 [January 19, 2001]
- Updated makefile.sgi to make shared library.
- Removed png_mmx_support() function and disabled PNG_MNG_FEATURES_SUPPORTED
- by default, for the benefit of DLL forward compatibility. These will
- be re-enabled in version 1.2.0.
-
-Version 1.0.9rc2 [January 22, 2001]
- Revised cygwin support.
-
-Version 1.0.9 [January 31, 2001]
- Added check of cygwin's ALL_STATIC in pngconf.h
- Added "-nommx" parameter to contrib/gregbook/rpng2-win and rpng2-x demos.
-
-Version 1.0.10beta1 [March 14, 2001]
- Revised makefile.dec, makefile.sgi, and makefile.sggcc; added makefile.hpgcc.
- Reformatted libpng.3 to eliminate bad line breaks.
- Added checks for _mmx_supported in the read_filter_row function of pnggccrd.c
- Added prototype for png_mmx_support() near the top of pnggccrd.c
- Moved some error checking from png_handle_IHDR to png_set_IHDR.
- Added PNG_NO_READ_SUPPORTED and PNG_NO_WRITE_SUPPORTED macros.
- Revised png_mmx_support() function in pnggccrd.c
- Restored version 1.0.8 PNG_WRITE_EMPTY_PLTE_SUPPORTED behavior in pngwutil.c
- Fixed memory leak in contrib/visupng/PngFile.c
- Fixed bugs in png_combine_row() in pnggccrd.c and pngvcrd.c (C version)
- Added warnings when retrieving or setting gamma=0.
- Increased the first part of msg buffer from 16 to 18 in png_chunk_warning().
-
-Version 1.0.10rc1 [March 23, 2001]
- Changed all instances of memcpy, strcpy, and strlen to png_memcpy, png_strcpy,
- and png_strlen.
- Revised png_mmx_supported() function in pnggccrd.c to return proper value.
- Fixed bug in progressive reading (pngpread.c) with small images (height < 8).
-
-Version 1.0.10 [March 30, 2001]
- Deleted extraneous space (introduced in 1.0.9) from line 42 of makefile.cygwin
- Added beos project files (Chris Herborth)
-
-Version 1.0.11beta1 [April 3, 2001]
- Added type casts on several png_malloc() calls (Dimitri Papadapoulos).
- Removed a no-longer needed AIX work-around from pngconf.h
- Changed several "//" single-line comments to C-style in pnggccrd.c
-
-Version 1.0.11beta2 [April 11, 2001]
- Removed PNGAPI from several functions whose prototypes did not have PNGAPI.
- Updated scripts/pngos2.def
-
-Version 1.0.11beta3 [April 14, 2001]
- Added checking the results of many instances of png_malloc() for NULL
-
-Version 1.0.11beta4 [April 20, 2001]
- Undid the changes from version 1.0.11beta3. Added a check for NULL return
- from user's malloc_fn().
- Removed some useless type casts of the NULL pointer.
- Added makefile.netbsd
-
-Version 1.0.11 [April 27, 2001]
- Revised makefile.netbsd
-
-Version 1.0.12beta1 [May 14, 2001]
- Test for Windows platform in pngconf.h when including malloc.h (Emmanuel Blot)
- Updated makefile.cygwin and handling of Cygwin's ALL_STATIC in pngconf.h
- Added some never-to-be-executed code in pnggccrd.c to quiet compiler warnings.
- Eliminated the png_error about apps using png_read|write_init(). Instead,
- libpng will reallocate the png_struct and info_struct if they are too small.
- This retains future binary compatibility for old applications written for
- libpng-0.88 and earlier.
-
-Version 1.2.0beta1 [May 6, 2001]
- Bumped DLLNUM to 2.
- Re-enabled PNG_MNG_FEATURES_SUPPORTED and enabled PNG_ASSEMBLER_CODE_SUPPORTED
- by default.
- Added runtime selection of MMX features.
- Added png_set_strip_error_numbers function and related macros.
-
-Version 1.2.0beta2 [May 7, 2001]
- Finished merging 1.2.0beta1 with version 1.0.11
- Added a check for attempts to read or write PLTE in grayscale PNG datastreams.
-
-Version 1.2.0beta3 [May 17, 2001]
- Enabled user memory function by default.
- Modified png_create_struct so it passes user mem_ptr to user memory allocator.
- Increased png_mng_features flag from png_byte to png_uint_32.
- Bumped shared-library (so-number) and dll-number to 3.
-
-Version 1.2.0beta4 [June 23, 2001]
- Check for missing profile length field in iCCP chunk and free chunk_data
- in case of truncated iCCP chunk.
- Bumped shared-library number to 3 in makefile.sgi and makefile.sggcc
- Bumped dll-number from 2 to 3 in makefile.cygwin
- Revised contrib/gregbook/rpng*-x.c to avoid a memory leak and to exit cleanly
- if user attempts to run it on an 8-bit display.
- Updated contrib/gregbook
- Use png_malloc instead of png_zalloc to allocate palette in pngset.c
- Updated makefile.ibmc
- Added some typecasts to eliminate gcc 3.0 warnings. Changed prototypes
- of png_write_oFFS width and height from png_uint_32 to png_int_32.
- Updated example.c
- Revised prototypes for png_debug_malloc and png_debug_free in pngtest.c
-
-Version 1.2.0beta5 [August 8, 2001]
- Revised contrib/gregbook
- Revised makefile.gcmmx
- Revised pnggccrd.c to conditionally compile some thread-unsafe code only
- when PNG_THREAD_UNSAFE_OK is defined.
- Added tests to prevent pngwutil.c from writing a bKGD or tRNS chunk with
- value exceeding 2^bit_depth-1
- Revised makefile.sgi and makefile.sggcc
- Replaced calls to fprintf(stderr,...) with png_warning() in pnggccrd.c
- Removed restriction that do_invert_mono only operate on 1-bit opaque files
-
-Version 1.2.0 [September 1, 2001]
- Changed a png_warning() to png_debug() in pnggccrd.c
- Fixed contrib/gregbook/rpng-x.c, rpng2-x.c to avoid crash with XFreeGC().
-
-Version 1.2.1beta1 [October 19, 2001]
- Revised makefile.std in contrib/pngminus
- Include background_1 in png_struct regardless of gamma support.
- Revised makefile.netbsd and makefile.macosx, added makefile.darwin.
- Revised example.c to provide more details about using row_callback().
-
-Version 1.2.1beta2 [October 25, 2001]
- Added type cast to each NULL appearing in a function call, except for
- WINCE functions.
- Added makefile.so9.
-
-Version 1.2.1beta3 [October 27, 2001]
- Removed type casts from all NULLs.
- Simplified png_create_struct_2().
-
-Version 1.2.1beta4 [November 7, 2001]
- Revised png_create_info_struct() and png_creat_struct_2().
- Added error message if png_write_info() was omitted.
- Type cast NULLs appearing in function calls when _NO_PROTO or
- PNG_TYPECAST_NULL is defined.
-
-Version 1.2.1rc1 [November 24, 2001]
- Type cast NULLs appearing in function calls except when PNG_NO_TYPECAST_NULL
- is defined.
- Changed typecast of "size" argument to png_size_t in pngmem.c calls to
- the user malloc_fn, to agree with the prototype in png.h
- Added a pop/push operation to pnggccrd.c, to preserve Eflag (Maxim Sobolev)
- Updated makefile.sgi to recognize LIBPATH and INCPATH.
- Updated various makefiles so "make clean" does not remove previous major
- version of the shared library.
-
-Version 1.2.1rc2 [December 4, 2001]
- Always allocate 256-entry internal palette, hist, and trans arrays, to
- avoid out-of-bounds memory reference caused by invalid PNG datastreams.
- Added a check for prefix_length > data_length in iCCP chunk handler.
-
-Version 1.2.1 [December 7, 2001]
- None.
-
-Version 1.2.2beta1 [February 22, 2002]
- Fixed a bug with reading the length of iCCP profiles (Larry Reeves).
- Revised makefile.linux, makefile.gcmmx, and makefile.sgi to generate
- libpng.a, libpng12.so (not libpng.so.3), and libpng12/png.h
- Revised makefile.darwin to remove "-undefined suppress" option.
- Added checks for gamma and chromaticity values over 21474.83, which exceed
- the limit for PNG unsigned 32-bit integers when encoded.
- Revised calls to png_create_read_struct() and png_create_write_struct()
- for simpler debugging.
- Revised png_zalloc() so zlib handles errors (uses PNG_FLAG_MALLOC_NULL_MEM_OK)
-
-Version 1.2.2beta2 [February 23, 2002]
- Check chunk_length and idat_size for invalid (over PNG_MAX_UINT) lengths.
- Check for invalid image dimensions in png_get_IHDR.
- Added missing "fi;" in the install target of the SGI makefiles.
- Added install-static to all makefiles that make shared libraries.
- Always do gamma compensation when image is partially transparent.
-
-Version 1.2.2beta3 [March 7, 2002]
- Compute background.gray and background_1.gray even when color_type is RGB
- in case image gets reduced to gray later.
- Modified shared-library makefiles to install pkgconfig/libpngNN.pc.
- Export (with PNGAPI) png_zalloc, png_zfree, and png_handle_as_unknown
- Removed unused png_write_destroy_info prototype from png.h
- Eliminated incorrect use of width_mmx from pnggccrd.c in pixel_bytes == 8 case
- Added install-shared target to all makefiles that make shared libraries.
- Stopped a double free of palette, hist, and trans when not using free_me.
- Added makefile.32sunu for Sun Ultra 32 and makefile.64sunu for Sun Ultra 64.
-
-Version 1.2.2beta4 [March 8, 2002]
- Compute background.gray and background_1.gray even when color_type is RGB
- in case image gets reduced to gray later (Jason Summers).
- Relocated a misplaced /bin/rm in the "install-shared" makefile targets
- Added PNG_1_0_X macro which can be used to build a 1.0.x-compatible library.
-
-Version 1.2.2beta5 [March 26, 2002]
- Added missing PNGAPI to several function definitions.
- Check for invalid bit_depth or color_type in png_get_IHDR(), and
- check for missing PLTE or IHDR in png_push_read_chunk() (Matthias Clasen).
- Revised iTXt support to accept NULL for lang and lang_key.
- Compute gamma for color components of background even when color_type is gray.
- Changed "()" to "{}" in scripts/libpng.pc.in.
- Revised makefiles to put png.h and pngconf.h only in $prefix/include/libpngNN
- Revised makefiles to make symlink to libpng.so.NN in addition to libpngNN.so
-
-Version 1.2.2beta6 [March 31, 2002]
-
-Version 1.0.13beta1 [March 31, 2002]
- Prevent png_zalloc() from trying to memset memory that it failed to acquire.
- Add typecasts of PNG_MAX_UINT in pngset_cHRM_fixed() (Matt Holgate).
- Ensure that the right function (user or default) is used to free the
- png_struct after an error in png_create_read_struct_2().
-
-Version 1.2.2rc1 [April 7, 2002]
-
-Version 1.0.13rc1 [April 7, 2002]
- Save the ebx register in pnggccrd.c (Sami Farin)
- Add "mem_ptr = png_ptr->mem_ptr" in png_destroy_write_struct() (Paul Gardner).
- Updated makefiles to put headers in include/libpng and remove old include/*.h.
-
-Version 1.2.2 [April 15, 2002]
-
-Version 1.0.13 [April 15, 2002]
- Revised description of png_set_filter() in libpng.3/libpng.txt.
- Revised makefile.netbsd and added makefile.neNNbsd and makefile.freebsd
-
-Version 1.0.13patch01 [April 17, 2002]
-
-Version 1.2.2patch01 [April 17, 2002]
- Changed ${PNGMAJ}.${PNGVER} bug to ${PNGVER} in makefile.sgi and
- makefile.sggcc
- Fixed VER -> PNGVER typo in makefile.macosx and added install-static to
- install
- Added install: target to makefile.32sunu and makefile.64sunu
-
-Version 1.0.13patch03 [April 18, 2002]
-
-Version 1.2.2patch03 [April 18, 2002]
- Revised 15 makefiles to link libpng.a to libpngNN.a and the include libpng
- subdirectory to libpngNN subdirectory without the full pathname.
- Moved generation of libpng.pc from "install" to "all" in 15 makefiles.
-
-Version 1.2.3rc1 [April 28, 2002]
- Added install-man target to 15 makefiles (Dimitri Papadopolous-Orfanos).
- Added $(DESTDIR) feature to 24 makefiles (Tim Mooney)
- Fixed bug with $prefix, should be $(prefix) in makefile.hpux.
- Updated cygwin-specific portion of pngconf.h and revised makefile.cygwin
- Added a link from libpngNN.pc to libpng.pc in 15 makefiles.
- Added links from include/libpngNN/*.h to include/*.h in 24 makefiles.
- Revised makefile.darwin to make relative links without full pathname.
- Added setjmp() at the end of png_create_*_struct_2() in case user forgets
- to put one in their application.
- Restored png_zalloc() and png_zfree() prototypes to version 1.2.1 and
- removed them from module definition files.
-
-Version 1.2.3rc2 [May 1, 2002]
- Fixed bug in reporting number of channels in pngget.c and pngset.c,
- that was introduced in version 1.2.2beta5.
- Exported png_zalloc(), png_zfree(), png_default_read(), png_default_write(),
- png_default_flush(), and png_push_fill_buffer() and included them in
- module definition files.
- Added "libpng.pc" dependency to the "install-shared" target in 15 makefiles.
-
-Version 1.2.3rc3 [May 1, 2002]
- Revised prototype for png_default_flush()
- Remove old libpng.pc and libpngNN.pc before installing new ones.
-
-Version 1.2.3rc4 [May 2, 2002]
- Typos in *.def files (png_default_read|write -> png_default_read|write_data)
- In makefiles, changed rm libpng.NN.pc to rm libpngNN.pc
- Added libpng-config and libpngNN-config and modified makefiles to install
- them.
- Changed $(MANPATH) to $(DESTDIR)$(MANPATH) in makefiles
- Added "Win32 DLL VB" configuration to projects/msvc/libpng.dsp
-
-Version 1.2.3rc5 [May 11, 2002]
- Changed "error" and "message" in prototypes to "error_message" and
- "warning_message" to avoid namespace conflict.
- Revised 15 makefiles to build libpng-config from libpng-config-*.in
- Once more restored png_zalloc and png_zfree to regular nonexported form.
- Restored png_default_read|write_data, png_default_flush, png_read_fill_buffer
- to nonexported form, but with PNGAPI, and removed them from module def
- files.
-
-Version 1.2.3rc6 [May 14, 2002]
- Removed "PNGAPI" from png_zalloc() and png_zfree() in png.c
- Changed "Gz" to "Gd" in projects/msvc/libpng.dsp and zlib.dsp.
- Removed leftover libpng-config "sed" script from four makefiles.
- Revised libpng-config creating script in 16 makefiles.
-
-Version 1.2.3 [May 22, 2002]
- Revised libpng-config target in makefile.cygwin.
- Removed description of png_set_mem_fn() from documentation.
- Revised makefile.freebsd.
- Minor cosmetic changes to 15 makefiles, e.g., $(DI) = $(DESTDIR)/$(INCDIR).
- Revised projects/msvc/README.txt
- Changed -lpng to -lpngNN in LDFLAGS in several makefiles.
-
-Version 1.2.4beta1 [May 24, 2002]
- Added libpng.pc and libpng-config to "all:" target in 16 makefiles.
- Fixed bug in 16 makefiles: $(DESTDIR)/$(LIBPATH) to $(DESTDIR)$(LIBPATH)
- Added missing "\" before closing double quote in makefile.gcmmx.
- Plugged various memory leaks; added png_malloc_warn() and png_set_text_2()
- functions.
-
-Version 1.2.4beta2 [June 25, 2002]
- Plugged memory leak of png_ptr->current_text (Matt Holgate).
- Check for buffer overflow before reading CRC in pngpread.c (Warwick Allison)
- Added -soname to the loader flags in makefile.dec, makefile.sgi, and
- makefile.sggcc.
- Added "test-installed" target to makefile.linux, makefile.gcmmx,
- makefile.sgi, and makefile.sggcc.
-
-Version 1.2.4beta3 [June 28, 2002]
- Plugged memory leak of row_buf in pngtest.c when there is a png_error().
- Detect buffer overflow in pngpread.c when IDAT is corrupted with extra data.
- Added "test-installed" target to makefile.32sunu, makefile.64sunu,
- makefile.beos, makefile.darwin, makefile.dec, makefile.macosx,
- makefile.solaris, makefile.hpux, makefile.hpgcc, and makefile.so9.
-
-Version 1.2.4rc1 and 1.0.14rc1 [July 2, 2002]
- Added "test-installed" target to makefile.cygwin and makefile.sco.
- Revised pnggccrd.c to be able to back out version 1.0.x via PNG_1_0_X macro.
-
-Version 1.2.4 and 1.0.14 [July 8, 2002]
- Changed png_warning() to png_error() when width is too large to process.
-
-Version 1.2.4patch01 [July 20, 2002]
- Revised makefile.cygwin to use DLL number 12 instead of 13.
-
-Version 1.2.5beta1 [August 6, 2002]
- Added code to contrib/gregbook/readpng2.c to ignore unused chunks.
- Replaced toucan.png in contrib/gregbook (it has been corrupt since 1.0.11)
- Removed some stray *.o files from contrib/gregbook.
- Changed png_error() to png_warning() about "Too much data" in pngpread.c
- and about "Extra compressed data" in pngrutil.c.
- Prevent png_ptr->pass from exceeding 7 in png_push_finish_row().
- Updated makefile.hpgcc
- Updated png.c and pnggccrd.c handling of return from png_mmx_support()
-
-Version 1.2.5beta2 [August 15, 2002]
- Only issue png_warning() about "Too much data" in pngpread.c when avail_in
- is nonzero.
- Updated makefiles to install a separate libpng.so.3 with its own rpath.
-
-Version 1.2.5rc1 and 1.0.15rc1 [August 24, 2002]
- Revised makefiles to not remove previous minor versions of shared libraries.
-
-Version 1.2.5rc2 and 1.0.15rc2 [September 16, 2002]
- Revised 13 makefiles to remove "-lz" and "-L$(ZLIBLIB)", etc., from shared
- library loader directive.
- Added missing "$OBJSDLL" line to makefile.gcmmx.
- Added missing "; fi" to makefile.32sunu.
-
-Version 1.2.5rc3 and 1.0.15rc3 [September 18, 2002]
- Revised libpng-config script.
-
-Version 1.2.5 and 1.0.15 [October 3, 2002]
- Revised makefile.macosx, makefile.darwin, makefile.hpgcc, and makefile.hpux,
- and makefile.aix.
- Relocated two misplaced PNGAPI lines in pngtest.c
-
-Version 1.2.6beta1 [October 22, 2002]
- Commented out warning about uninitialized mmx_support in pnggccrd.c.
- Changed "IBMCPP__" flag to "__IBMCPP__" in pngconf.h.
- Relocated two more misplaced PNGAPI lines in pngtest.c
- Fixed memory overrun bug in png_do_read_filler() with 16-bit datastreams,
- introduced in version 1.0.2.
- Revised makefile.macosx, makefile.dec, makefile.aix, and makefile.32sunu.
-
-Version 1.2.6beta2 [November 1, 2002]
- Added libpng-config "--ldopts" output.
- Added "AR=ar" and "ARFLAGS=rc" and changed "ar rc" to "$(AR) $(ARFLAGS)"
- in makefiles.
-
-Version 1.2.6beta3 [July 18, 2004]
- Reverted makefile changes from version 1.2.6beta2 and some of the changes
- from version 1.2.6beta1; these will be postponed until version 1.2.7.
- Version 1.2.6 is going to be a simple bugfix release.
- Changed the one instance of "ln -sf" to "ln -f -s" in each Sun makefile.
- Fixed potential overrun in pngerror.c by using strncpy instead of memcpy.
- Added "#!/bin/sh" at the top of configure, for recognition of the
- 'x' flag under Cygwin (Cosmin).
- Optimized vacuous tests that silence compiler warnings, in png.c (Cosmin).
- Added support for PNG_USER_CONFIG, in pngconf.h (Cosmin).
- Fixed the special memory handler for Borland C under DOS, in pngmem.c
- (Cosmin).
- Removed some spurious assignments in pngrutil.c (Cosmin).
- Replaced 65536 with 65536L, and 0xffff with 0xffffL, to silence warnings
- on 16-bit platforms (Cosmin).
- Enclosed shift op expressions in parentheses, to silence warnings (Cosmin).
- Used proper type png_fixed_point, to avoid problems on 16-bit platforms,
- in png_handle_sRGB() (Cosmin).
- Added compression_type to png_struct, and optimized the window size
- inside the deflate stream (Cosmin).
- Fixed definition of isnonalpha(), in pngerror.c and pngrutil.c (Cosmin).
- Fixed handling of unknown chunks that come after IDAT (Cosmin).
- Allowed png_error() and png_warning() to work even if png_ptr == NULL
- (Cosmin).
- Replaced row_info->rowbytes with row_bytes in png_write_find_filter()
- (Cosmin).
- Fixed definition of PNG_LIBPNG_VER_DLLNUM (Simon-Pierre).
- Used PNG_LIBPNG_VER and PNG_LIBPNG_VER_STRING instead of the hardcoded
- values in png.c (Simon-Pierre, Cosmin).
- Initialized png_libpng_ver[] with PNG_LIBPNG_VER_STRING (Simon-Pierre).
- Replaced PNG_LIBPNG_VER_MAJOR with PNG_LIBPNG_VER_DLLNUM in png.rc
- (Simon-Pierre).
- Moved the definition of PNG_HEADER_VERSION_STRING near the definitions
- of the other PNG_LIBPNG_VER_... symbols in png.h (Cosmin).
- Relocated #ifndef PNGAPI guards in pngconf.h (Simon-Pierre, Cosmin).
- Updated scripts/makefile.vc(a)win32 (Cosmin).
- Updated the MSVC project (Simon-Pierre, Cosmin).
- Updated the Borland C++ Builder project (Cosmin).
- Avoided access to asm_flags in pngvcrd.c, if PNG_1_0_X is defined (Cosmin).
- Commented out warning about uninitialized mmx_support in pngvcrd.c (Cosmin).
- Removed scripts/makefile.bd32 and scripts/pngdef.pas (Cosmin).
- Added extra guard around inclusion of Turbo C memory headers, in pngconf.h
- (Cosmin).
- Renamed projects/msvc/ to projects/visualc6/, and projects/borland/ to
- projects/cbuilder5/ (Cosmin).
- Moved projects/visualc6/png32ms.def to scripts/pngw32.def,
- and projects/visualc6/png.rc to scripts/pngw32.rc (Cosmin).
- Added projects/visualc6/pngtest.dsp; removed contrib/msvctest/ (Cosmin).
- Changed line endings to DOS style in cbuilder5 and visualc6 files, even
- in the tar.* distributions (Cosmin).
- Updated contrib/visupng/VisualPng.dsp (Cosmin).
- Updated contrib/visupng/cexcept.h to version 2.0.0 (Cosmin).
- Added a separate distribution with "configure" and supporting files (Junichi).
-
-Version 1.2.6beta4 [July 28, 2004]
- Added user ability to change png_size_t via a PNG_SIZE_T macro.
- Added png_sizeof() and png_convert_size() functions.
- Added PNG_SIZE_MAX (maximum value of a png_size_t variable.
- Added check in png_malloc_default() for (size_t)size != (png_uint_32)size
- which would indicate an overflow.
- Changed sPLT failure action from png_error to png_warning and abandon chunk.
- Changed sCAL and iCCP failures from png_error to png_warning and abandon.
- Added png_get_uint_31(png_ptr, buf) function.
- Added PNG_UINT_32_MAX macro.
- Renamed PNG_MAX_UINT to PNG_UINT_31_MAX.
- Made png_zalloc() issue a png_warning and return NULL on potential
- overflow.
- Turn on PNG_NO_ZALLOC_ZERO by default in version 1.2.x
- Revised "clobber list" in pnggccrd.c so it will compile under gcc-3.4.
- Revised Borland portion of png_malloc() to return NULL or issue
- png_error() according to setting of PNG_FLAG_MALLOC_NULL_MEM_OK.
- Added PNG_NO_SEQUENTIAL_READ_SUPPORTED macro to conditionally remove
- sequential read support.
- Added some "#if PNG_WRITE_SUPPORTED" blocks.
- Added #ifdef to remove some redundancy in png_malloc_default().
- Use png_malloc instead of png_zalloc to allocate the pallete.
-
-Version 1.0.16rc1 and 1.2.6rc1 [August 4, 2004]
- Fixed buffer overflow vulnerability in png_handle_tRNS()
- Fixed integer arithmetic overflow vulnerability in png_read_png().
- Fixed some harmless bugs in png_handle_sBIT, etc, that would cause
- duplicate chunk types to go undetected.
- Fixed some timestamps in the -config version
- Rearranged order of processing of color types in png_handle_tRNS().
- Added ROWBYTES macro to calculate rowbytes without integer overflow.
- Updated makefile.darwin and removed makefile.macosx from scripts directory.
- Imposed default one million column, one-million row limits on the image
- dimensions, and added png_set_user_limits() function to override them.
- Revised use of PNG_SET_USER_LIMITS_SUPPORTED macro.
- Fixed wrong cast of returns from png_get_user_width|height_max().
- Changed some "keep the compiler happy" from empty statements to returns,
- Revised libpng.txt to remove 1.2.x stuff from the 1.0.x distribution
-
-Version 1.0.16rc2 and 1.2.6rc2 [August 7, 2004]
- Revised makefile.darwin and makefile.solaris. Removed makefile.macosx.
- Revised pngtest's png_debug_malloc() to use png_malloc() instead of
- png_malloc_default() which is not supposed to be exported.
- Fixed off-by-one error in one of the conversions to PNG_ROWBYTES() in
- pngpread.c. Bug was introduced in 1.2.6rc1.
- Fixed bug in RGB to RGBX transformation introduced in 1.2.6rc1.
- Fixed old bug in RGB to Gray transformation.
- Fixed problem with 64-bit compilers by casting arguments to abs()
- to png_int_32.
- Changed "ln -sf" to "ln -f -s" in three makefiles (solaris, sco, so9).
- Changed "HANDLE_CHUNK_*" to "PNG_HANDLE_CHUNK_*" (Cosmin)
- Added "-@/bin/rm -f $(DL)/$(LIBNAME).so.$(PNGMAJ)" to 15 *NIX makefiles.
- Added code to update the row_info->colortype in png_do_read_filler() (MSB).
-
-Version 1.0.16rc3 and 1.2.6rc3 [August 9, 2004]
- Eliminated use of "abs()" in testing cHRM and gAMA values, to avoid
- trouble with some 64-bit compilers. Created PNG_OUT_OF_RANGE() macro.
- Revised documentation of png_set_keep_unknown_chunks().
- Check handle_as_unknown status in pngpread.c, as in pngread.c previously.
- Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_INTERNAL section of png.h
- Added "rim" definitions for CONST4 and CONST6 in pnggccrd.c
-
-Version 1.0.16rc4 and 1.2.6rc4 [August 10, 2004]
- Fixed mistake in pngtest.c introduced in 1.2.6rc2 (declaration of
- "pinfo" was out of place).
-
-Version 1.0.16rc5 and 1.2.6rc5 [August 10, 2004]
- Moved "PNG_HANDLE_CHUNK_*" macros out of PNG_ASSEMBLER_CODE_SUPPORTED
- section of png.h where they were inadvertently placed in version rc3.
-
-Version 1.2.6 and 1.0.16 [August 15, 2004]
- Revised pngtest so memory allocation testing is only done when PNG_DEBUG==1.
-
-Version 1.2.7beta1 [August 26, 2004]
- Removed unused pngasmrd.h file.
- Removed references to uu.net for archived files. Added references to
- PNG Spec (second edition) and the PNG ISO/IEC Standard.
- Added "test-dd" target in 15 makefiles, to run pngtest in DESTDIR.
- Fixed bug with "optimized window size" in the IDAT datastream, that
- causes libpng to write PNG files with incorrect zlib header bytes.
-
-Version 1.2.7beta2 [August 28, 2004]
- Fixed bug with sCAL chunk and big-endian machines (David Munro).
- Undid new code added in 1.2.6rc2 to update the color_type in
- png_set_filler().
- Added png_set_add_alpha() that updates color type.
-
-Version 1.0.17rc1 and 1.2.7rc1 [September 4, 2004]
- Revised png_set_strip_filler() to not remove alpha if color_type has alpha.
-
-Version 1.2.7 and 1.0.17 [September 12, 2004]
- Added makefile.hp64
- Changed projects/msvc/png32ms.def to scripts/png32ms.def in makefile.cygwin
-
-Version 1.2.8beta1 [November 1, 2004]
- Fixed bug in png_text_compress() that would fail to complete a large block.
- Fixed bug, introduced in libpng-1.2.7, that overruns a buffer during
- strip alpha operation in png_do_strip_filler().
- Added PNG_1_2_X definition in pngconf.h
- Use #ifdef to comment out png_info_init in png.c and png_read_init in
- pngread.c (as of 1.3.0)
-
-Version 1.2.8beta2 [November 2, 2004]
- Reduce color_type to a nonalpha type after strip alpha operation in
- png_do_strip_filler().
-
-Version 1.2.8beta3 [November 3, 2004]
- Revised definitions of PNG_MAX_UINT_32, PNG_MAX_SIZE, and PNG_MAXSUM
-
-Version 1.2.8beta4 [November 12, 2004]
- Fixed (again) definition of PNG_LIBPNG_VER_DLLNUM in png.h (Cosmin).
- Added PNG_LIBPNG_BUILD_PRIVATE in png.h (Cosmin).
- Set png_ptr->zstream.data_type to Z_BINARY, to avoid unnecessary detection
- of data type in deflate (Cosmin).
- Deprecated but continue to support SPECIALBUILD and PRIVATEBUILD in favor of
- PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
-
-Version 1.2.8beta5 [November 20, 2004]
- Use png_ptr->flags instead of png_ptr->transformations to pass
- PNG_STRIP_ALPHA info to png_do_strip_filler(), to preserve ABI
- compatibility.
- Revised handling of SPECIALBUILD, PRIVATEBUILD,
- PNG_LIBPNG_BUILD_SPECIAL_STRING and PNG_LIBPNG_BUILD_PRIVATE_STRING.
-
-Version 1.2.8rc1 [November 24, 2004]
- Moved handling of BUILD macros from pngconf.h to png.h
- Added definition of PNG_LIBPNG_BASE_TYPE in png.h, inadvertently
- omitted from beta5.
- Revised scripts/pngw32.rc
- Despammed mailing addresses by masking "@" with "at".
- Inadvertently installed a supposedly faster test version of pngrutil.c
-
-Version 1.2.8rc2 [November 26, 2004]
- Added two missing "\" in png.h
- Change tests in pngread.c and pngpread.c to
- if (png_ptr->transformations || (png_ptr->flags&PNG_FLAG_STRIP_ALPHA))
- png_do_read_transformations(png_ptr);
-
-Version 1.2.8rc3 [November 28, 2004]
- Reverted pngrutil.c to version libpng-1.2.8beta5.
- Added scripts/makefile.elf with supporting code in pngconf.h for symbol
- versioning (John Bowler).
-
-Version 1.2.8rc4 [November 29, 2004]
- Added projects/visualc7 (Simon-pierre).
-
-Version 1.2.8rc5 [November 29, 2004]
- Fixed new typo in scripts/pngw32.rc
-
-Version 1.2.8 [December 3, 2004]
- Removed projects/visualc7, added projects/visualc71.
-
-Version 1.2.9beta1 [February 21, 2006]
- Initialized some structure members in pngwutil.c to avoid gcc-4.0.0 complaints
- Revised man page and libpng.txt to make it clear that one should not call
- png_read_end or png_write_end after png_read_png or png_write_png.
- Updated references to png-mng-implement mailing list.
- Fixed an incorrect typecast in pngrutil.c
- Added PNG_NO_READ_SUPPORTED conditional for making a write-only library.
- Added PNG_NO_WRITE_INTERLACING_SUPPORTED conditional.
- Optimized alpha-inversion loops in pngwtran.c
- Moved test for nonzero gamma outside of png_build_gamma_table() in pngrtran.c
- Make sure num_trans is <= 256 before copying data in png_set_tRNS().
- Make sure num_palette is <= 256 before copying data in png_set_PLTE().
- Interchanged order of write_swap_alpha and write_invert_alpha transforms.
- Added parentheses in the definition of PNG_LIBPNG_BUILD_TYPE (Cosmin).
- Optimized zlib window flag (CINFO) in contrib/pngsuite/*.png (Cosmin).
- Updated scripts/makefile.bc32 for Borland C++ 5.6 (Cosmin).
- Exported png_get_uint_32, png_save_uint_32, png_get_uint_16, png_save_uint_16,
- png_get_int_32, png_save_int_32, png_get_uint_31 (Cosmin).
- Added type cast (png_byte) in png_write_sCAL() (Cosmin).
- Fixed scripts/makefile.cygwin (Christian Biesinger, Cosmin).
- Default iTXt support was inadvertently enabled.
-
-Version 1.2.9beta2 [February 21, 2006]
- Check for png_rgb_to_gray and png_gray_to_rgb read transformations before
- checking for png_read_dither in pngrtran.c
- Revised checking of chromaticity limits to accommodate extended RGB
- colorspace (John Denker).
- Changed line endings in some of the project files to CRLF, even in the
- "Unix" tar distributions (Cosmin).
- Made png_get_int_32 and png_save_int_32 always available (Cosmin).
- Updated scripts/pngos2.def, scripts/pngw32.def and projects/wince/png32ce.def
- with the newly exported functions.
- Eliminated distributions without the "configure" script.
- Updated INSTALL instructions.
-
-Version 1.2.9beta3 [February 24, 2006]
- Fixed CRCRLF line endings in contrib/visupng/VisualPng.dsp
- Made libpng.pc respect EXEC_PREFIX (D. P. Kreil, J. Bowler)
- Removed reference to pngasmrd.h from Makefile.am
- Renamed CHANGES to ChangeLog.
- Renamed LICENSE to COPYING.
- Renamed ANNOUNCE to NEWS.
- Created AUTHORS file.
-
-Version 1.2.9beta4 [March 3, 2006]
- Changed definition of PKGCONFIG from $prefix/lib to $libdir in configure.ac
- Reverted to filenames LICENSE and ANNOUNCE; removed AUTHORS and COPYING.
- Removed newline from the end of some error and warning messages.
- Removed test for sqrt() from configure.ac and configure.
- Made swap tables in pngtrans.c PNG_CONST (Carlo Bramix).
- Disabled default iTXt support that was inadvertently enabled in
- libpng-1.2.9beta1.
- Added "OS2" to list of systems that don't need underscores, in pnggccrd.c
- Removed libpng version and date from *.c files.
-
-Version 1.2.9beta5 [March 4, 2006]
- Removed trailing blanks from source files.
- Put version and date of latest change in each source file, and changed
- copyright year accordingly.
- More cleanup of configure.ac, Makefile.am, and associated scripts.
- Restored scripts/makefile.elf which was inadvertently deleted.
-
-Version 1.2.9beta6 [March 6, 2006]
- Fixed typo (RELEASE) in configuration files.
-
-Version 1.2.9beta7 [March 7, 2006]
- Removed libpng.vers and libpng.sym from libpng12_la_SOURCES in Makefile.am
- Fixed inconsistent #ifdef's around png_sig_bytes() and png_set_sCAL_s()
- in png.h.
- Updated makefile.elf as suggested by debian.
- Made cosmetic changes to some makefiles, adding LN_SF and other macros.
- Made some makefiles accept "exec_prefix".
-
-Version 1.2.9beta8 [March 9, 2006]
- Fixed some "#if defined (..." which should be "#if defined(..."
- Bug introduced in libpng-1.2.8.
- Fixed inconsistency in definition of png_default_read_data()
- Restored blank that was lost from makefile.sggcc "clean" target in beta7.
- Revised calculation of "current" and "major" for irix in ltmain.sh
- Changed "mkdir" to "MKDIR_P" in some makefiles.
- Separated PNG_EXPAND and PNG_EXPAND_tRNS.
- Added png_set_expand_gray_1_2_4_to_8() and deprecated
- png_set_gray_1_2_4_to_8() which also expands tRNS to alpha.
-
-Version 1.2.9beta9 [March 10, 2006]
- Include "config.h" in pngconf.h when available.
- Added some checks for NULL png_ptr or NULL info_ptr (timeless)
-
-Version 1.2.9beta10 [March 20, 2006]
- Removed extra CR from contrib/visualpng/VisualPng.dsw (Cosmin)
- Made pnggccrd.c PIC-compliant (Christian Aichinger).
- Added makefile.mingw (Wolfgang Glas).
- Revised pngconf.h MMX checking.
-
-Version 1.2.9beta11 [March 22, 2006]
- Fixed out-of-order declaration in pngwrite.c that was introduced in beta9
- Simplified some makefiles by using LIBSO, LIBSOMAJ, and LIBSOVER macros.
-
-Version 1.2.9rc1 [March 31, 2006]
- Defined PNG_USER_PRIVATEBUILD when including "pngusr.h" (Cosmin).
- Removed nonsensical assertion check from pngtest.c (Cosmin).
-
-Version 1.2.9 [April 14, 2006]
- Revised makefile.beos and added "none" selector in ltmain.sh
-
-Version 1.2.10beta1 [April 15, 2006]
- Renamed "config.h" to "png_conf.h" and revised Makefile.am to add
- -DPNG_BUILDING_LIBPNG to compile directive, and modified pngconf.h
- to include png_conf.h only when PNG_BUILDING_LIBPNG is defined.
-
-Version 1.2.10beta2 [April 15, 2006]
- Manually updated Makefile.in and configure. Changed png_conf.h.in
- back to config.h.
-
-Version 1.2.10beta3 [April 15, 2006]
- Change png_conf.h back to config.h in pngconf.h.
-
-Version 1.2.10beta4 [April 16, 2006]
- Change PNG_BUILDING_LIBPNG to PNG_CONFIGURE_LIBPNG in config/Makefile*.
-
-Version 1.2.10beta5 [April 16, 2006]
- Added a configure check for compiling assembler code in pnggccrd.c
-
-Version 1.2.10beta6 [April 17, 2006]
- Revised the configure check for pnggccrd.c
- Moved -DPNG_CONFIGURE_LIBPNG into @LIBPNG_DEFINES@
- Added @LIBPNG_DEFINES@ to arguments when building libpng.sym
-
-Version 1.2.10beta7 [April 18, 2006]
- Change "exec_prefix=$prefix" to "exec_prefix=$(prefix)" in makefiles.
-
-Version 1.2.10rc1 [April 19, 2006]
- Ensure pngconf.h doesn't define both PNG_USE_PNGGCCRD and PNG_USE_PNGVCRD
- Fixed "LN_FS" typo in makefile.sco and makefile.solaris.
-
-Version 1.2.10rc2 [April 20, 2006]
- Added a backslash between -DPNG_CONFIGURE_LIBPNG and -DPNG_NO_ASSEMBLER_CODE
- in configure.ac and configure
- Made the configure warning about versioned symbols less arrogant.
-
-Version 1.2.10rc3 [April 21, 2006]
- Added a note in libpng.txt that png_set_sig_bytes(8) can be used when
- writing an embedded PNG without the 8-byte signature.
- Revised makefiles and configure to avoid making links to libpng.so.*
-
-Version 1.2.10 [April 23, 2006]
- Reverted configure to "rc2" state.
-
-Version 1.2.11beta1 [May 31, 2006]
- scripts/libpng.pc.in contained "configure" style version info and would
- not work with makefiles.
- The shared-library makefiles were linking to libpng.so.0 instead of
- libpng.so.3 compatibility as the library.
-
-Version 1.2.11beta2 [June 2, 2006]
- Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
- buffer overflow.
- Fixed bug in example.c (png_set_palette_rgb -> png_set_palette_to_rgb)
-
-Version 1.2.11beta3 [June 5, 2006]
- Prepended "#! /bin/sh" to ltmail.sh and contrib/pngminus/*.sh (Cosmin).
- Removed the accidental leftover Makefile.in~ (Cosmin).
- Avoided potential buffer overflow and optimized buffer in
- png_write_sCAL(), png_write_sCAL_s() (Cosmin).
- Removed the include directories and libraries from CFLAGS and LDFLAGS
- in scripts/makefile.gcc (Nelson A. de Oliveira, Cosmin).
-
-Version 1.2.11beta4 [June 6, 2006]
- Allow zero-length IDAT chunks after the entire zlib datastream, but not
- after another intervening chunk type.
-
-Version 1.0.19rc1, 1.2.11rc1 [June 13, 2006]
- Deleted extraneous square brackets from [config.h] in configure.ac
-
-Version 1.0.19rc2, 1.2.11rc2 [June 14, 2006]
- Added prototypes for PNG_INCH_CONVERSIONS functions to png.h
- Revised INSTALL and autogen.sh
- Fixed typo in several makefiles (-W1 should be -Wl)
- Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
-
-Version 1.0.19rc3, 1.2.11rc3 [June 15, 2006]
- Removed the new typedefs for 64-bit systems (delay until version 1.4.0)
- Added one zero element to png_gamma_shift[] array in pngrtran.c to avoid
- reading out of bounds.
-
-Version 1.0.19rc4, 1.2.11rc4 [June 15, 2006]
- Really removed the new typedefs for 64-bit systems.
-
-Version 1.0.19rc5, 1.2.11rc5 [June 22, 2006]
- Removed png_sig_bytes entry from scripts/pngw32.def
-
-Version 1.0.19, 1.2.11 [June 26, 2006]
- None.
-
-Version 1.0.20, 1.2.12 [June 27, 2006]
- Really increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
- buffer overflow.
-
-Version 1.2.13beta1 [October 2, 2006]
- Removed AC_FUNC_MALLOC from configure.ac
- Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
- Change "logical" to "bitwise" throughout documentation.
- Detect and fix attempt to write wrong iCCP profile length (CVE-2006-7244)
-
-Version 1.0.21, 1.2.13 [November 14, 2006]
- Fix potential buffer overflow in sPLT chunk handler.
- Fix Makefile.am to not try to link to noexistent files.
- Check all exported functions for NULL png_ptr.
-
-Version 1.2.14beta1 [November 17, 2006]
- Relocated three misplaced tests for NULL png_ptr.
- Built Makefile.in with automake-1.9.6 instead of 1.9.2.
- Build configure with autoconf-2.60 instead of 2.59
-
-Version 1.2.14beta2 [November 17, 2006]
- Added some typecasts in png_zalloc().
-
-Version 1.2.14rc1 [November 20, 2006]
- Changed "strtod" to "png_strtod" in pngrutil.c
-
-Version 1.0.22, 1.2.14 [November 27, 2006]
- Added missing "$(srcdir)" in Makefile.am and Makefile.in
-
-Version 1.2.15beta1 [December 3, 2006]
- Generated configure with autoconf-2.61 instead of 2.60
- Revised configure.ac to update libpng.pc and libpng-config.
-
-Version 1.2.15beta2 [December 3, 2006]
- Always export MMX asm functions, just stubs if not building pnggccrd.c
-
-Version 1.2.15beta3 [December 4, 2006]
- Add "png_bytep" typecast to profile while calculating length in pngwutil.c
-
-Version 1.2.15beta4 [December 7, 2006]
- Added scripts/CMakeLists.txt
- Changed PNG_NO_ASSEMBLER_CODE to PNG_NO_MMX_CODE in scripts, like 1.4.0beta
-
-Version 1.2.15beta5 [December 7, 2006]
- Changed some instances of PNG_ASSEMBLER_* to PNG_MMX_* in pnggccrd.c
- Revised scripts/CMakeLists.txt
-
-Version 1.2.15beta6 [December 13, 2006]
- Revised scripts/CMakeLists.txt and configure.ac
-
-Version 1.2.15rc1 [December 18, 2006]
- Revised scripts/CMakeLists.txt
-
-Version 1.2.15rc2 [December 21, 2006]
- Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
- Added scripts/makefile.nommx
-
-Version 1.2.15rc3 [December 25, 2006]
- Fixed shared library numbering error that was introduced in 1.2.15beta6.
-
-Version 1.2.15rc4 [December 27, 2006]
- Fixed handling of rgb_to_gray when png_ptr->color.gray isn't set.
-
-Version 1.2.15rc5 [December 31, 2006]
- Revised handling of rgb_to_gray.
-
-Version 1.2.15 [January 5, 2007]
- Added some (unsigned long) typecasts in pngtest.c to avoid printing errors.
-
-Version 1.2.16beta1 [January 6, 2007]
- Fix bugs in makefile.nommx
-
-Version 1.2.16beta2 [January 16, 2007]
- Revised scripts/CMakeLists.txt
-
-Version 1.2.16 [January 31, 2007]
- No changes.
-
-Version 1.2.17beta1 [March 6, 2007]
- Revised scripts/CMakeLists.txt to install both shared and static libraries.
- Deleted a redundant line from pngset.c.
-
-Version 1.2.17beta2 [April 26, 2007]
- Relocated misplaced test for png_ptr == NULL in pngpread.c
- Change "==" to "&" for testing PNG_RGB_TO_GRAY_ERR & PNG_RGB_TO_GRAY_WARN
- flags.
- Changed remaining instances of PNG_ASSEMBLER_* to PNG_MMX_*
- Added pngerror() when write_IHDR fails in deflateInit2().
- Added "const" to some array declarations.
- Mention examples of libpng usage in the libpng*.txt and libpng.3 documents.
-
-Version 1.2.17rc1 [May 4, 2007]
- No changes.
-
-Version 1.2.17rc2 [May 8, 2007]
- Moved several PNG_HAVE_* macros out of PNG_INTERNAL because applications
- calling set_unknown_chunk_location() need them.
- Changed transformation flag from PNG_EXPAND_tRNS to PNG_EXPAND in
- png_set_expand_gray_1_2_4_to_8().
- Added png_ptr->unknown_chunk to hold working unknown chunk data, so it
- can be free'ed in case of error. Revised unknown chunk handling in
- pngrutil.c and pngpread.c to use this structure.
-
-Version 1.2.17rc3 [May 8, 2007]
- Revised symbol-handling in configure script.
-
-Version 1.2.17rc4 [May 10, 2007]
- Revised unknown chunk handling to avoid storing unknown critical chunks.
-
-Version 1.0.25 [May 15, 2007]
-Version 1.2.17 [May 15, 2007]
- Added "png_ptr->num_trans=0" before error return in png_handle_tRNS,
- to eliminate a vulnerability (CVE-2007-2445, CERT VU#684664)
-
-Version 1.0.26 [May 15, 2007]
-Version 1.2.18 [May 15, 2007]
- Reverted the libpng-1.2.17rc3 change to symbol-handling in configure script
-
-Version 1.2.19beta1 [May 18, 2007]
- Changed "const static" to "static PNG_CONST" everywhere, mostly undoing
- change of libpng-1.2.17beta2. Changed other "const" to "PNG_CONST"
- Changed some handling of unused parameters, to avoid compiler warnings.
- "if (unused == NULL) return;" becomes "unused = unused".
-
-Version 1.2.19beta2 [May 18, 2007]
- Only use the valid bits of tRNS value in png_do_expand() (Brian Cartier)
-
-Version 1.2.19beta3 [May 19, 2007]
- Add some "png_byte" typecasts in png_check_keyword() and write new_key
- instead of key in zTXt chunk (Kevin Ryde).
-
-Version 1.2.19beta4 [May 21, 2007]
- Add png_snprintf() function and use it in place of sprint() for improved
- defense against buffer overflows.
-
-Version 1.2.19beta5 [May 21, 2007]
- Fixed png_handle_tRNS() to only use the valid bits of tRNS value.
- Changed handling of more unused parameters, to avoid compiler warnings.
- Removed some PNG_CONST in pngwutil.c to avoid compiler warnings.
-
-Version 1.2.19beta6 [May 22, 2007]
- Added some #ifdef PNG_MMX_CODE_SUPPORTED where needed in pngvcrd.c
- Added a special "_MSC_VER" case that defines png_snprintf to _snprintf
-
-Version 1.2.19beta7 [May 22, 2007]
- Squelched png_squelch_warnings() in pnggccrd.c and added
- an #ifdef PNG_MMX_CODE_SUPPORTED block around the declarations that caused
- the warnings that png_squelch_warnings was squelching.
-
-Version 1.2.19beta8 [May 22, 2007]
- Removed __MMX__ from test in pngconf.h.
-
-Version 1.2.19beta9 [May 23, 2007]
- Made png_squelch_warnings() available via PNG_SQUELCH_WARNINGS macro.
- Revised png_squelch_warnings() so it might work.
- Updated makefile.sgcc and makefile.solaris; added makefile.solaris-x86.
-
-Version 1.2.19beta10 [May 24, 2007]
- Resquelched png_squelch_warnings(), use "__attribute__((used))" instead.
-
-Version 1.4.0beta1 [April 20, 2006]
- Enabled iTXt support (changes png_struct, thus requires so-number change).
- Cleaned up PNG_ASSEMBLER_CODE_SUPPORTED vs PNG_MMX_CODE_SUPPORTED
- Eliminated PNG_1_0_X and PNG_1_2_X macros.
- Removed deprecated functions png_read_init, png_write_init, png_info_init,
- png_permit_empty_plte, png_set_gray_1_2_4_to_8, png_check_sig, and
- removed the deprecated macro PNG_MAX_UINT.
- Moved "PNG_INTERNAL" parts of png.h and pngconf.h into pngintrn.h
- Removed many WIN32_WCE #ifdefs (Cosmin).
- Reduced dependency on C-runtime library when on Windows (Simon-Pierre)
- Replaced sprintf() with png_sprintf() (Simon-Pierre)
-
-Version 1.4.0beta2 [April 20, 2006]
- Revised makefiles and configure to avoid making links to libpng.so.*
- Moved some leftover MMX-related defines from pngconf.h to pngintrn.h
- Updated scripts/pngos2.def, pngw32.def, and projects/wince/png32ce.def
-
-Version 1.4.0beta3 [May 10, 2006]
- Updated scripts/pngw32.def to comment out MMX functions.
- Added PNG_NO_GET_INT_32 and PNG_NO_SAVE_INT_32 macros.
- Scripts/libpng.pc.in contained "configure" style version info and would
- not work with makefiles.
- Revised pngconf.h and added pngconf.h.in, so makefiles and configure can
- pass defines to libpng and applications.
-
-Version 1.4.0beta4 [May 11, 2006]
- Revised configure.ac, Makefile.am, and many of the makefiles to write
- their defines in pngconf.h.
-
-Version 1.4.0beta5 [May 15, 2006]
- Added a missing semicolon in Makefile.am and Makefile.in
- Deleted extraneous square brackets from configure.ac
-
-Version 1.4.0beta6 [June 2, 2006]
- Increased sprintf buffer from 50 to 52 chars in pngrutil.c to avoid
- buffer overflow.
- Changed sonum from 0 to 1.
- Removed unused prototype for png_check_sig() from png.h
-
-Version 1.4.0beta7 [June 16, 2006]
- Exported png_write_sig (Cosmin).
- Optimized buffer in png_handle_cHRM() (Cosmin).
- Set pHYs = 2835 x 2835 pixels per meter, and added
- sCAL = 0.352778e-3 x 0.352778e-3 meters, in pngtest.png (Cosmin).
- Added png_set_benign_errors(), png_benign_error(), png_chunk_benign_error().
- Added typedef for png_int_32 and png_uint_32 on 64-bit systems.
- Added "(unsigned long)" typecast on png_uint_32 variables in printf lists.
-
-Version 1.4.0beta8 [June 22, 2006]
- Added demonstration of user chunk support in pngtest.c, to support the
- public sTER chunk and a private vpAg chunk.
-
-Version 1.4.0beta9 [July 3, 2006]
- Removed ordinals from scripts/pngw32.def and removed png_info_int and
- png_set_gray_1_2_4_to_8 entries.
- Inline call of png_get_uint_32() in png_get_uint_31().
- Use png_get_uint_31() to get vpAg width and height in pngtest.c
- Removed WINCE and Netware projects.
- Removed standalone Y2KINFO file.
-
-Version 1.4.0beta10 [July 12, 2006]
- Eliminated automatic copy of pngconf.h to pngconf.h.in from configure and
- some makefiles, because it was not working reliably. Instead, distribute
- pngconf.h.in along with pngconf.h and cause configure and some of the
- makefiles to update pngconf.h from pngconf.h.in.
- Added pngconf.h to DEPENDENCIES in Makefile.am
-
-Version 1.4.0beta11 [August 19, 2006]
- Removed AC_FUNC_MALLOC from configure.ac.
- Added a warning when writing iCCP profile with mismatched profile length.
- Patched pnggccrd.c to assemble on x86_64 platforms.
- Moved chunk header reading into a separate function png_read_chunk_header()
- in pngrutil.c. The chunk header (len+sig) is now serialized in a single
- operation (Cosmin).
- Implemented support for I/O states. Added png_ptr member io_state, and
- functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
- (Cosmin).
- Added png_get_io_chunk_name and png_get_io_state to scripts/*.def (Cosmin).
- Renamed scripts/pngw32.* to scripts/pngwin.* (Cosmin).
- Removed the include directories and libraries from CFLAGS and LDFLAGS
- in scripts/makefile.gcc (Cosmin).
- Used png_save_uint_32() to set vpAg width and height in pngtest.c (Cosmin).
- Cast to proper type when getting/setting vpAg units in pngtest.c (Cosmin).
- Added pngintrn.h to the Visual C++ projects (Cosmin).
- Removed scripts/list (Cosmin).
- Updated copyright year in scripts/pngwin.def (Cosmin).
- Removed PNG_TYPECAST_NULL and used standard NULL consistently (Cosmin).
- Disallowed the user to redefine png_size_t, and enforced a consistent use
- of png_size_t across libpng (Cosmin).
- Changed the type of png_ptr->rowbytes, PNG_ROWBYTES() and friends
- to png_size_t (Cosmin).
- Removed png_convert_size() and replaced png_sizeof with sizeof (Cosmin).
- Removed some unnecessary type casts (Cosmin).
- Changed prototype of png_get_compression_buffer_size() and
- png_set_compression_buffer_size() to work with png_size_t instead of
- png_uint_32 (Cosmin).
- Removed png_memcpy_check() and png_memset_check() (Cosmin).
- Fixed a typo (png_byte --> png_bytep) in libpng.3 and libpng.txt (Cosmin).
- Clarified that png_zalloc() does not clear the allocated memory,
- and png_zalloc() and png_zfree() cannot be PNGAPI (Cosmin).
- Renamed png_mem_size_t to png_alloc_size_t, fixed its definition in
- pngconf.h, and used it in all memory allocation functions (Cosmin).
- Renamed pngintrn.h to pngpriv.h, added a comment at the top of the file
- mentioning that the symbols declared in that file are private, and
- updated the scripts and the Visual C++ projects accordingly (Cosmin).
- Removed circular references between pngconf.h and pngconf.h.in in
- scripts/makefile.vc*win32 (Cosmin).
- Removing trailing '.' from the warning and error messages (Cosmin).
- Added pngdefs.h that is built by makefile or configure, instead of
- pngconf.h.in (Glenn).
- Detect and fix attempt to write wrong iCCP profile length.
-
-Version 1.4.0beta12 [October 19, 2006]
- Changed "logical" to "bitwise" in the documentation.
- Work around Intel-Mac compiler bug by setting PNG_NO_MMX_CODE in pngconf.h
- Add a typecast to stifle compiler warning in pngrutil.c
-
-Version 1.4.0beta13 [November 10, 2006]
- Fix potential buffer overflow in sPLT chunk handler.
- Fix Makefile.am to not try to link to noexistent files.
-
-Version 1.4.0beta14 [November 15, 2006]
- Check all exported functions for NULL png_ptr.
-
-Version 1.4.0beta15 [November 17, 2006]
- Relocated two misplaced tests for NULL png_ptr.
- Built Makefile.in with automake-1.9.6 instead of 1.9.2.
- Build configure with autoconf-2.60 instead of 2.59
- Add "install: all" in Makefile.am so "configure; make install" will work.
-
-Version 1.4.0beta16 [November 17, 2006]
- Added a typecast in png_zalloc().
-
-Version 1.4.0beta17 [December 4, 2006]
- Changed "new_key[79] = '\0';" to "(*new_key)[79] = '\0';" in pngwutil.c
- Add "png_bytep" typecast to profile while calculating length in pngwutil.c
-
-Version 1.4.0beta18 [December 7, 2006]
- Added scripts/CMakeLists.txt
-
-Version 1.4.0beta19 [May 16, 2007]
- Revised scripts/CMakeLists.txt
- Rebuilt configure and Makefile.in with newer tools.
- Added conditional #undef jmpbuf in pngtest.c to undo #define in AIX headers.
- Added scripts/makefile.nommx
-
-Version 1.4.0beta20 [July 9, 2008]
- Moved several PNG_HAVE_* macros from pngpriv.h to png.h because applications
- calling set_unknown_chunk_location() need them.
- Moved several macro definitions from pngpriv.h to pngconf.h
- Merge with changes to the 1.2.X branch, as of 1.2.30beta04.
- Deleted all use of the MMX assembler code and Intel-licensed optimizations.
- Revised makefile.mingw
-
-Version 1.4.0beta21 [July 21, 2008]
- Moved local array "chunkdata" from pngrutil.c to the png_struct, so
- it will be freed by png_read_destroy() in case of a read error (Kurt
- Christensen).
-
-Version 1.4.0beta22 [July 21, 2008]
- Change "purpose" and "buffer" to png_ptr->chunkdata to avoid memory leaking.
-
-Version 1.4.0beta23 [July 22, 2008]
- Change "chunkdata = NULL" to "png_ptr->chunkdata = NULL" several places in
- png_decompress_chunk().
-
-Version 1.4.0beta24 [July 25, 2008]
- Change all remaining "chunkdata" to "png_ptr->chunkdata" in
- png_decompress_chunk(), and remove "chunkdata" from parameter list.
- Put a call to png_check_chunk_name() in png_read_chunk_header().
- Revised png_check_chunk_name() to reject a name with a lowercase 3rd byte.
- Removed two calls to png_check_chunk_name() occuring later in the process.
- Define PNG_NO_ERROR_NUMBERS by default in pngconf.h
-
-Version 1.4.0beta25 [July 30, 2008]
- Added a call to png_check_chunk_name() in pngpread.c
- Reverted png_check_chunk_name() to accept a name with a lowercase 3rd byte.
- Added png_push_have_buffer() function to pngpread.c
- Eliminated PNG_BIG_ENDIAN_SUPPORTED and associated png_get_* macros.
- Made inline expansion of png_get_*() optional with PNG_USE_READ_MACROS.
- Eliminated all PNG_USELESS_TESTS and PNG_CORRECT_PALETTE_SUPPORTED code.
- Synced contrib directory and configure files with libpng-1.2.30beta06.
- Eliminated no-longer-used pngdefs.h (but it's still built in the makefiles)
- Relocated a misplaced "#endif /* PNG_NO_WRITE_FILTER */" in pngwutil.c
-
-Version 1.4.0beta26 [August 4, 2008]
- Removed png_push_have_buffer() function in pngpread.c. It increased the
- compiled library size slightly.
- Changed "-Wall" to "-W -Wall" in the CFLAGS in all makefiles (Cosmin Truta)
- Declared png_ptr "volatile" in pngread.c and pngwrite.c to avoid warnings.
- Updated contrib/visupng/cexcept.h to version 2.0.1
- Added PNG_LITERAL_CHARACTER macros for #, [, and ].
-
-Version 1.4.0beta27 [August 5, 2008]
- Revised usage of PNG_LITERAL_SHARP in pngerror.c.
- Moved newline character from individual png_debug messages into the
- png_debug macros.
- Allow user to #define their own png_debug, png_debug1, and png_debug2.
-
-Version 1.4.0beta28 [August 5, 2008]
- Revised usage of PNG_LITERAL_SHARP in pngerror.c.
- Added PNG_STRING_NEWLINE macro
-
-Version 1.4.0beta29 [August 9, 2008]
- Revised usage of PNG_STRING_NEWLINE to work on non-ISO compilers.
- Added PNG_STRING_COPYRIGHT macro.
- Added non-ISO versions of png_debug macros.
-
-Version 1.4.0beta30 [August 14, 2008]
- Added premultiplied alpha feature (Volker Wiendl).
-
-Version 1.4.0beta31 [August 18, 2008]
- Moved png_set_premultiply_alpha from pngtrans.c to pngrtran.c
- Removed extra crc check at the end of png_handle_cHRM(). Bug introduced
- in libpng-1.4.0beta20.
-
-Version 1.4.0beta32 [August 19, 2008]
- Added PNG_WRITE_FLUSH_SUPPORTED block around new png_flush() call.
- Revised PNG_NO_STDIO version of png_write_flush()
-
-Version 1.4.0beta33 [August 20, 2008]
- Added png_get|set_chunk_cache_max() to limit the total number of sPLT,
- text, and unknown chunks that can be stored.
-
-Version 1.4.0beta34 [September 6, 2008]
- Shortened tIME_string to 29 bytes in pngtest.c
- Fixed off-by-one error introduced in png_push_read_zTXt() function in
- libpng-1.2.30beta04/pngpread.c (Harald van Dijk)
-
-Version 1.4.0beta35 [October 6, 2008]
- Changed "trans_values" to "trans_color".
- Changed so-number from 0 to 14. Some OS do not like 0.
- Revised makefile.darwin to fix shared library numbering.
- Change png_set_gray_1_2_4_to_8() to png_set_expand_gray_1_2_4_to_8()
- in example.c (debian bug report)
-
-Version 1.4.0beta36 [October 25, 2008]
- Sync with tEXt vulnerability fix in libpng-1.2.33rc02.
-
-Version 1.4.0beta37 [November 13, 2008]
- Added png_check_cHRM in png.c and moved checking from pngget.c, pngrutil.c,
- and pngwrite.c
-
-Version 1.4.0beta38 [November 22, 2008]
- Added check for zero-area RGB cHRM triangle in png_check_cHRM() and
- png_check_cHRM_fixed().
-
-Version 1.4.0beta39 [November 23, 2008]
- Revised png_warning() to write its message on standard output by default
- when warning_fn is NULL.
-
-Version 1.4.0beta40 [November 24, 2008]
- Eliminated png_check_cHRM(). Instead, always use png_check_cHRM_fixed().
- In png_check_cHRM_fixed(), ensure white_y is > 0, and removed redundant
- check for all-zero coordinates that is detected by the triangle check.
-
-Version 1.4.0beta41 [November 26, 2008]
- Fixed string vs pointer-to-string error in png_check_keyword().
- Rearranged test expressions in png_check_cHRM_fixed() to avoid internal
- overflows.
- Added PNG_NO_CHECK_cHRM conditional.
-
-Version 1.4.0beta42, 43 [December 1, 2008]
- Merge png_debug with version 1.2.34beta04.
-
-Version 1.4.0beta44 [December 6, 2008]
- Removed redundant check for key==NULL before calling png_check_keyword()
- to ensure that new_key gets initialized and removed extra warning
- (Merge with version 1.2.34beta05 -- Arvan Pritchard).
-
-Version 1.4.0beta45 [December 9, 2008]
- In png_write_png(), respect the placement of the filler bytes in an earlier
- call to png_set_filler() (Jim Barry).
-
-Version 1.4.0beta46 [December 10, 2008]
- Undid previous change and added PNG_TRANSFORM_STRIP_FILLER_BEFORE and
- PNG_TRANSFORM_STRIP_FILLER_AFTER conditionals and deprecated
- PNG_TRANSFORM_STRIP_FILLER (Jim Barry).
-
-Version 1.4.0beta47 [December 15, 2008]
- Support for dithering was disabled by default, because it has never
- been well tested and doesn't work very well. The code has not
- been removed, however, and can be enabled by building libpng with
- PNG_READ_DITHER_SUPPORTED defined.
-
-Version 1.4.0beta48 [February 14, 2009]
- Added new exported function png_calloc().
- Combined several instances of png_malloc(); png_memset() into png_calloc().
- Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
- but was never defined.
-
-Version 1.4.0beta49 [February 28, 2009]
- Added png_fileno() macro to pngconf.h, used in pngwio.c
- Corrected order of #ifdef's in png_debug definition in png.h
- Fixed bug introduced in libpng-1.4.0beta48 with the memset arguments
- for pcal_params.
- Fixed order of #ifdef directives in the png_debug defines in png.h
- (bug introduced in libpng-1.2.34/1.4.0beta29).
- Revised comments in png_set_read_fn() and png_set_write_fn().
-
-Version 1.4.0beta50 [March 18, 2009]
- Use png_calloc() instead of png_malloc() to allocate big_row_buf when
- reading an interlaced file, to avoid a possible UMR.
- Undid revision of PNG_NO_STDIO version of png_write_flush(). Users
- having trouble with fflush() can build with PNG_NO_WRITE_FLUSH defined
- or supply their own flush_fn() replacement.
- Revised libpng*.txt and png.h documentation about use of png_write_flush()
- and png_set_write_fn().
- Removed fflush() from pngtest.c.
- Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
-
-Version 1.4.0beta51 [March 21, 2009]
- Removed new png_fileno() macro from pngconf.h .
-
-Version 1.4.0beta52 [March 27, 2009]
- Relocated png_do_chop() ahead of building gamma tables in pngrtran.c
- This avoids building 16-bit gamma tables unnecessarily.
- Removed fflush() from pngtest.c.
- Added "#define PNG_NO_WRITE_FLUSH" to contrib/pngminim/encoder/pngusr.h
- Added a section on differences between 1.0.x and 1.2.x to libpng.3/libpng.txt
-
-Version 1.4.0beta53 [April 1, 2009]
- Removed some remaining MMX macros from pngpriv.h
- Fixed potential memory leak of "new_name" in png_write_iCCP() (Ralph Giles)
-
-Version 1.4.0beta54 [April 13, 2009]
- Added "ifndef PNG_SKIP_SETJMP_CHECK" block in pngconf.h to allow
- application code writers to bypass the check for multiple inclusion
- of setjmp.h when they know that it is safe to ignore the situation.
- Eliminated internal use of setjmp() in pngread.c and pngwrite.c
- Reordered ancillary chunks in pngtest.png to be the same as what
- pngtest now produces, and made some cosmetic changes to pngtest output.
- Eliminated deprecated png_read_init_3() and png_write_init_3() functions.
-
-Version 1.4.0beta55 [April 15, 2009]
- Simplified error handling in pngread.c and pngwrite.c by putting
- the new png_read_cleanup() and png_write_cleanup() functions inline.
-
-Version 1.4.0beta56 [April 25, 2009]
- Renamed "user_chunk_data" to "my_user_chunk_data" in pngtest.c to suppress
- "shadowed declaration" warning from gcc-4.3.3.
- Renamed "gamma" to "png_gamma" in pngset.c to avoid "shadowed declaration"
- warning about a global "gamma" variable in math.h on some platforms.
-
-Version 1.4.0beta57 [May 2, 2009]
- Removed prototype for png_freeptr() that was added in libpng-1.4.0beta24
- but was never defined (again).
- Rebuilt configure scripts with autoconf-2.63 instead of 2.62
- Removed pngprefs.h and MMX from makefiles
-
-Version 1.4.0beta58 [May 14, 2009]
- Changed pngw32.def to pngwin.def in makefile.mingw (typo was introduced
- in beta57).
- Clarified usage of sig_bit versus sig_bit_p in example.c (Vincent Torri)
-
-Version 1.4.0beta59 [May 15, 2009]
- Reformated sources in libpng style (3-space intentation, comment format)
- Fixed typo in libpng docs (PNG_FILTER_AVE should be PNG_FILTER_AVG)
- Added sections about the git repository and our coding style to the
- documentation
- Relocated misplaced #endif in pngwrite.c, sCAL chunk handler.
-
-Version 1.4.0beta60 [May 19, 2009]
- Conditionally compile png_read_finish_row() which is not used by
- progressive readers.
- Added contrib/pngminim/preader to demonstrate building minimal progressive
- decoder, based on contrib/gregbook with embedded libpng and zlib.
-
-Version 1.4.0beta61 [May 20, 2009]
- In contrib/pngminim/*, renamed "makefile.std" to "makefile", since there
- is only one makefile in those directories, and revised the README files
- accordingly.
- More reformatting of comments, mostly to capitalize sentences.
-
-Version 1.4.0beta62 [June 2, 2009]
- Added "#define PNG_NO_WRITE_SWAP" to contrib/pngminim/encoder/pngusr.h
- and "define PNG_NO_READ_SWAP" to decoder/pngusr.h and preader/pngusr.h
- Reformatted several remaining "else statement" into two lines.
- Added a section to the libpng documentation about using png_get_io_ptr()
- in configure scripts to detect the presence of libpng.
-
-Version 1.4.0beta63 [June 15, 2009]
- Revised libpng*.txt and libpng.3 to mention calling png_set_IHDR()
- multiple times and to specify the sample order in the tRNS chunk,
- because the ISO PNG specification has a typo in the tRNS table.
- Changed several PNG_UNKNOWN_CHUNK_SUPPORTED to
- PNG_HANDLE_AS_UNKNOWN_SUPPORTED, to make the png_set_keep mechanism
- available for ignoring known chunks even when not saving unknown chunks.
- Adopted preference for consistent use of "#ifdef" and "#ifndef" versus
- "#if defined()" and "if !defined()" where possible.
-
-Version 1.4.0beta64 [June 24, 2009]
- Eliminated PNG_LEGACY_SUPPORTED code.
- Moved the various unknown chunk macro definitions outside of the
- PNG_READ|WRITE_ANCILLARY_CHUNK_SUPPORTED blocks.
-
-Version 1.4.0beta65 [June 26, 2009]
- Added a reference to the libpng license in each file.
-
-Version 1.4.0beta66 [June 27, 2009]
- Refer to the libpng license instead of the libpng license in each file.
-
-Version 1.4.0beta67 [July 6, 2009]
- Relocated INVERT_ALPHA within png_read_png() and png_write_png().
- Added high-level API transform PNG_TRANSFORM_GRAY_TO_RGB.
- Added an "xcode" project to the projects directory (Alam Arias).
-
-Version 1.4.0beta68 [July 19, 2009]
- Avoid some tests in filter selection in pngwutil.c
-
-Version 1.4.0beta69 [July 25, 2009]
- Simplified the new filter-selection test. This runs faster in the
- common "PNG_ALL_FILTERS" and PNG_FILTER_NONE cases.
- Removed extraneous declaration from the new call to png_read_gray_to_rgb()
- (bug introduced in libpng-1.4.0beta67).
- Fixed up xcode project (Alam Arias)
- Added a prototype for png_64bit_product() in png.c
-
-Version 1.4.0beta70 [July 27, 2009]
- Avoid a possible NULL dereference in debug build, in png_set_text_2().
- (bug introduced in libpng-0.95, discovered by Evan Rouault)
-
-Version 1.4.0beta71 [July 29, 2009]
- Rebuilt configure scripts with autoconf-2.64.
-
-Version 1.4.0beta72 [August 1, 2009]
- Replaced *.tar.lzma with *.tar.xz in distribution. Get the xz codec
- from <http://tukaani.org/xz>.
-
-Version 1.4.0beta73 [August 1, 2009]
- Reject attempt to write iCCP chunk with negative embedded profile length
- (JD Chen) (CVE-2009-5063).
-
-Version 1.4.0beta74 [August 8, 2009]
- Changed png_ptr and info_ptr member "trans" to "trans_alpha".
-
-Version 1.4.0beta75 [August 21, 2009]
- Removed an extra png_debug() recently added to png_write_find_filter().
- Fixed incorrect #ifdef in pngset.c regarding unknown chunk support.
-
-Version 1.4.0beta76 [August 22, 2009]
- Moved an incorrectly located test in png_read_row() in pngread.c
-
-Version 1.4.0beta77 [August 27, 2009]
- Removed lpXYZ.tar.bz2 (with CRLF), KNOWNBUG, libpng-x.y.z-KNOWNBUG.txt,
- and the "noconfig" files from the distribution.
- Moved CMakeLists.txt from scripts into the main libpng directory.
- Various bugfixes and improvements to CMakeLists.txt (Philip Lowman)
-
-Version 1.4.0beta78 [August 31, 2009]
- Converted all PNG_NO_* tests to PNG_*_SUPPORTED everywhere except pngconf.h
- Eliminated PNG_NO_FREE_ME and PNG_FREE_ME_SUPPORTED macros.
- Use png_malloc plus a loop instead of png_calloc() to initialize
- row_pointers in png_read_png().
-
-Version 1.4.0beta79 [September 1, 2009]
- Eliminated PNG_GLOBAL_ARRAYS and PNG_LOCAL_ARRAYS; always use local arrays.
- Eliminated PNG_CALLOC_SUPPORTED macro and always provide png_calloc().
-
-Version 1.4.0beta80 [September 17, 2009]
- Removed scripts/libpng.icc
- Changed typecast of filler from png_byte to png_uint_16 in png_set_filler().
- (Dennis Gustafsson)
- Fixed typo introduced in beta78 in pngtest.c ("#if def " should be "#ifdef ")
-
-Version 1.4.0beta81 [September 23, 2009]
- Eliminated unused PNG_FLAG_FREE_* defines from pngpriv.h
- Expanded TAB characters in pngrtran.c
- Removed PNG_CONST from all "PNG_CONST PNG_CHNK" declarations to avoid
- compiler complaints about doubly declaring things "const".
- Changed all "#if [!]defined(X)" to "if[n]def X" where possible.
- Eliminated unused png_ptr->row_buf_size
-
-Version 1.4.0beta82 [September 25, 2009]
- Moved redundant IHDR checking into new png_check_IHDR() in png.c
- and report all errors found in the IHDR data.
- Eliminated useless call to png_check_cHRM() from pngset.c
-
-Version 1.4.0beta83 [September 25, 2009]
- Revised png_check_IHDR() to eliminate bogus complaint about filter_type.
-
-Version 1.4.0beta84 [September 30, 2009]
- Fixed some inconsistent indentation in pngconf.h
- Revised png_check_IHDR() to add a test for width variable less than 32-bit.
-
-Version 1.4.0beta85 [October 1, 2009]
- Revised png_check_IHDR() again, to check info_ptr members instead of
- the contents of the returned parameters.
-
-Version 1.4.0beta86 [October 9, 2009]
- Updated the "xcode" project (Alam Arias).
- Eliminated a shadowed declaration of "pp" in png_handle_sPLT().
-
-Version 1.4.0rc01 [October 19, 2009]
- Trivial cosmetic changes.
-
-Version 1.4.0beta87 [October 30, 2009]
- Moved version 1.4.0 back into beta.
-
-Version 1.4.0beta88 [October 30, 2009]
- Revised libpng*.txt section about differences between 1.2.x and 1.4.0
- because most of the new features have now been ported back to 1.2.41
-
-Version 1.4.0beta89 [November 1, 2009]
- More bugfixes and improvements to CMakeLists.txt (Philip Lowman)
- Removed a harmless extra png_set_invert_alpha() from pngwrite.c
- Apply png_user_chunk_cache_max within png_decompress_chunk().
- Merged libpng-1.2.41.txt with libpng-1.4.0.txt where appropriate.
-
-Version 1.4.0beta90 [November 2, 2009]
- Removed all remaining WIN32_WCE #ifdefs except those involving the
- time.h "tm" structure
-
-Version 1.4.0beta91 [November 3, 2009]
- Updated scripts/pngw32.def and projects/wince/png32ce.def
- Copied projects/wince/png32ce.def to the scripts directory.
- Added scripts/makefile.wce
- Patched ltmain.sh for wince support.
- Added PNG_CONVERT_tIME_SUPPORTED macro.
-
-Version 1.4.0beta92 [November 4, 2009]
- Make inclusion of time.h in pngconf.h depend on PNG_CONVERT_tIME_SUPPORTED
- Make #define PNG_CONVERT_tIME_SUPPORTED depend on PNG_WRITE_tIME_SUPPORTED
- Revised libpng*.txt to describe differences from 1.2.40 to 1.4.0 (instead
- of differences from 1.2.41 to 1.4.0)
-
-Version 1.4.0beta93 [November 7, 2009]
- Added PNG_DEPSTRUCT, PNG_DEPRECATED, PNG_USE_RESULT, PNG_NORETURN, and
- PNG_ALLOCATED macros to detect deprecated direct access to the
- png_struct or info_struct members and other deprecated usage in
- applications (John Bowler).
- Updated scripts/makefile* to add "-DPNG_CONFIGURE_LIBPNG" to CFLAGS,
- to prevent warnings about direct access to png structs by libpng
- functions while building libpng. They need to be tested, especially
- those using compilers other than gcc.
- Updated projects/visualc6 and visualc71 with "/d PNG_CONFIGURE_LIBPNG".
- They should work but still need to be updated to remove
- references to pnggccrd.c or pngvcrd.c and ASM building.
- Added README.txt to the beos, cbuilder5, netware, and xcode projects warning
- that they need to be updated, to remove references to pnggccrd.c and
- pngvcrd.c and to depend on pngpriv.h
- Removed three direct references to read_info_ptr members in pngtest.c
- that were detected by the new PNG_DEPSTRUCT macro.
- Moved the png_debug macro definitions and the png_read_destroy(),
- png_write_destroy() and png_far_to_near() prototypes from png.h
- to pngpriv.h (John Bowler)
- Moved the synopsis lines for png_read_destroy(), png_write_destroy()
- png_debug(), png_debug1(), and png_debug2() from libpng.3 to libpngpf.3.
-
-Version 1.4.0beta94 [November 9, 2009]
- Removed the obsolete, unused pnggccrd.c and pngvcrd.c files.
- Updated CMakeLists.txt to add "-DPNG_CONFIGURE_LIBPNG" to the definitions.
- Removed dependency of pngtest.o on pngpriv.h in the makefiles.
- Only #define PNG_DEPSTRUCT, etc. in pngconf.h if not already defined.
-
-Version 1.4.0beta95 [November 10, 2009]
- Changed png_check_sig() to !png_sig_cmp() in contrib programs.
- Added -DPNG_CONFIGURE_LIBPNG to contrib/pngminm/*/makefile
- Changed png_check_sig() to !png_sig_cmp() in contrib programs.
- Corrected the png_get_IHDR() call in contrib/gregbook/readpng2.c
- Changed pngminim/*/gather.sh to stop trying to remove pnggccrd.c and pngvcrd.c
- Added dependency on pngpriv.h in contrib/pngminim/*/makefile
-
-Version 1.4.0beta96 [November 12, 2009]
- Renamed scripts/makefile.wce to scripts/makefile.cegcc
- Revised Makefile.am to use libpng.sys while building libpng.so
- so that only PNG_EXPORT functions are exported.
- Removed the deprecated png_check_sig() function/macro.
- Removed recently removed function names from scripts/*.def
- Revised pngtest.png to put chunks in the same order written by pngtest
- (evidently the same change made in libpng-1.0beta54 was lost).
- Added PNG_PRIVATE macro definition in pngconf.h for possible future use.
-
-Version 1.4.0beta97 [November 13, 2009]
- Restored pngtest.png to the libpng-1.4.0beta7 version.
- Removed projects/beos and netware.txt; no one seems to be supporting them.
- Revised Makefile.in
-
-Version 1.4.0beta98 [November 13, 2009]
- Added the "xcode" project to zip distributions,
- Fixed a typo in scripts/pngwin.def introduced in beta97.
-
-Version 1.4.0beta99 [November 14, 2009]
- Moved libpng-config.in and libpng.pc-configure.in out of the scripts
- directory, to libpng-config.in and libpng-pc.in, respectively, and
- modified Makefile.am and configure.ac accordingly. Now "configure"
- needs nothing from the "scripts" directory.
- Avoid redefining PNG_CONST in pngconf.h
-
-Version 1.4.0beta100 [November 14, 2009]
- Removed ASM builds from projects/visualc6 and projects/visualc71
- Removed scripts/makefile.nommx and makefile.vcawin32
- Revised CMakeLists.txt to account for new location of libpng-config.in
- and libpng-pc.in
- Updated INSTALL to reflect removal and relocation of files.
-
-Version 1.4.0beta101 [November 14, 2009]
- Restored the binary files (*.jpg, *.png, some project files) that were
- accidentally deleted from the zip and 7z distributions when the xcode
- project was added.
-
-Version 1.4.0beta102 [November 18, 2009]
- Added libpng-config.in and libpng-pc.in to the zip and 7z distributions.
- Fixed a typo in projects/visualc6/pngtest.dsp, introduced in beta100.
- Moved descriptions of makefiles and other scripts out of INSTALL into
- scripts/README.txt
- Updated the copyright year in scripts/pngwin.rc from 2006 to 2009.
-
-Version 1.4.0beta103 [November 21, 2009]
- Removed obsolete comments about ASM from projects/visualc71/README_zlib.txt
- Align row_buf on 16-byte boundary in memory.
- Restored the PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED guard around the call
- to png_flush() after png_write_IEND(). See 1.4.0beta32, 1.4.0beta50
- changes above and 1.2.30, 1.2.30rc01 and rc03 in 1.2.41 CHANGES. Someone
- needs this feature.
- Make the 'png_jmpbuf' macro expand to a call that records the correct
- longjmp function as well as returning a pointer to the setjmp
- jmp_buf buffer, and marked direct access to jmpbuf 'deprecated'.
- (John Bowler)
-
-Version 1.4.0beta104 [November 22, 2009]
- Removed png_longjmp_ptr from scripts/*.def and libpng.3
- Rebuilt configure scripts with autoconf-2.65
-
-Version 1.4.0beta105 [November 25, 2009]
- Use fast integer PNG_DIVIDE_BY_255() or PNG_DIVIDE_BY_65535()
- to accomplish alpha premultiplication when
- PNG_READ_COMPOSITE_NODIV_SUPPORTED is defined.
- Changed "/255" to "/255.0" in background calculations to make it clear
- that the 255 is used as a double.
-
-Version 1.4.0beta106 [November 27, 2009]
- Removed premultiplied alpha feature.
-
-Version 1.4.0beta107 [December 4, 2009]
- Updated README
- Added "#define PNG_NO_PEDANTIC_WARNINGS" in the libpng source files.
- Removed "-DPNG_CONFIGURE_LIBPNG" from the makefiles and projects.
- Revised scripts/makefile.netbsd, makefile.openbsd, and makefile.sco
- to put png.h and pngconf.h in $prefix/include, like the other scripts,
- instead of in $prefix/include/libpng. Also revised makefile.sco
- to put them in $prefix/include/libpng15 instead of in
- $prefix/include/libpng/libpng15.
-
-Version 1.4.0beta108 [December 11, 2009]
- Removed leftover "-DPNG_CONFIGURE_LIBPNG" from contrib/pngminim/*/makefile
- Relocated png_do_chop() to its original position in pngrtran.c; the
- change in version 1.2.41beta08 caused transparency to be handled wrong
- in some 16-bit datastreams (Yusaku Sugai).
-
-Version 1.4.0beta109 [December 13, 2009]
- Added "bit_depth" parameter to the private png_build_gamma_table() function.
- Pass bit_depth=8 to png_build_gamma_table() when bit_depth is 16 but the
- PNG_16_TO_8 transform has been set, to avoid unnecessary build of 16-bit
- tables.
-
-Version 1.4.0rc02 [December 20, 2009]
- Declared png_cleanup_needed "volatile" in pngread.c and pngwrite.c
-
-Version 1.4.0rc03 [December 22, 2009]
- Renamed libpng-pc.in back to libpng.pc.in and revised CMakeLists.txt
- (revising the change in 1.4.0beta99)
-
-Version 1.4.0rc04 [December 25, 2009]
- Swapped PNG_UNKNOWN_CHUNKS_SUPPORTED and PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- in pngset.c to be consistent with other changes in version 1.2.38.
-
-Version 1.4.0rc05 [December 25, 2009]
- Changed "libpng-pc.in" to "libpng.pc.in" in configure.ac, configure, and
- Makefile.in to be consistent with changes in libpng-1.4.0rc03
-
-Version 1.4.0rc06 [December 29, 2009]
- Reverted the gamma_table changes from libpng-1.4.0beta109.
- Fixed some indentation errors.
-
-Version 1.4.0rc07 [January 1, 2010]
- Revised libpng*.txt and libpng.3 about 1.2.x->1.4.x differences.
- Use png_calloc() instead of png_malloc(); png_memset() in pngrutil.c
- Update copyright year to 2010.
-
-Version 1.4.0rc08 [January 2, 2010]
- Avoid deprecated references to png_ptr-io_ptr and png_ptr->error_ptr
- in pngtest.c
-
-Version 1.4.0 [January 3, 2010]
- No changes.
-
-Version 1.4.1beta01 [January 8, 2010]
- Updated CMakeLists.txt for consistent indentation and to avoid an
- unclosed if-statement warning (Philip Lowman).
- Revised Makefile.am and Makefile.in to remove references to Y2KINFO,
- KNOWNBUG, and libpng.la (Robert Schwebel).
- Revised the makefiles to install the same files and symbolic
- links as configure, except for libpng.la and libpng14.la.
- Make png_set|get_compression_buffer_size() available even when
- PNG_WRITE_SUPPORTED is not enabled.
- Revised Makefile.am and Makefile.in to simplify their maintenance.
- Revised scripts/makefile.linux to install a link to libpng14.so.14.1
-
-Version 1.4.1beta02 [January 9, 2010]
- Revised the rest of the makefiles to install a link to libpng14.so.14.1
-
-Version 1.4.1beta03 [January 10, 2010]
- Removed png_set_premultiply_alpha() from scripts/*.def
-
-Version 1.4.1rc01 [January 16, 2010]
- No changes.
-
-Version 1.4.1beta04 [January 23, 2010]
- Revised png_decompress_chunk() to improve speed and memory usage when
- decoding large chunks.
- Added png_set|get_chunk_malloc_max() functions.
-
-Version 1.4.1beta05 [January 26, 2010]
- Relocated "int k" declaration in pngtest.c to minimize its scope.
-
-Version 1.4.1beta06 [January 28, 2010]
- Revised png_decompress_chunk() to use a two-pass method suggested by
- John Bowler.
-
-Version 1.4.1beta07 [February 6, 2010]
- Folded some long lines in the source files.
- Added defineable PNG_USER_CHUNK_CACHE_MAX, PNG_USER_CHUNK_MALLOC_MAX,
- and a PNG_USER_LIMITS_SUPPORTED flag.
- Eliminated use of png_ptr->irowbytes and reused the slot in png_ptr as
- png_ptr->png_user_chunk_malloc_max.
- Revised png_push_save_buffer() to do fewer but larger png_malloc() calls.
-
-Version 1.4.1beta08 [February 6, 2010]
- Minor cleanup and updating of dates and copyright year.
-
-Version 1.5.0beta01 [February 7, 2010]
- Moved declaration of png_struct into private pngstruct.h and png_info
- into pnginfo.h
-
-Version 1.4.1beta09 and 1.5.0beta02 [February 7, 2010]
- Reverted to original png_push_save_buffer() code.
-
-Version 1.4.1beta10 and 1.5.0beta03 [February 8, 2010]
- Return allocated "old_buffer" in png_push_save_buffer() before
- calling png_error(), to avoid a potential memory leak.
- Updated configure script to use SO number 15.
-
-Version 1.5.0beta04 [February 9, 2010]
- Removed malformed "incomplete struct declaration" of png_info from png.h
-
-Version 1.5.0beta05 [February 12, 2010]
- Removed PNG_DEPSTRUCT markup in pngstruct.h and pnginfo.h, and undid the
- linewrapping that it entailed.
- Revised comments in pngstruct.h and pnginfo.h and added pointers to
- the libpng license.
- Changed PNG_INTERNAL to PNG_EXPOSE_INTERNAL_STRUCTURES
- Removed the cbuilder5 project, which has not been updated to 1.4.0.
-
-Version 1.4.1beta12 and 1.5.0beta06 [February 14, 2010]
- Fixed type declaration of png_get_chunk_malloc_max() in pngget.c (Daisuke
- Nishikawa)
-
-Version 1.5.0beta07 [omitted]
-
-Version 1.5.0beta08 [February 19, 2010]
- Changed #ifdef PNG_NO_STDIO_SUPPORTED to #ifdef PNG_NO_CONSOLE_IO_SUPPORTED
- wherever png_snprintf() is used to construct error and warning messages.
- Noted in scripts/makefile.mingw that it expects to be run under MSYS.
- Removed obsolete unused MMX-querying support from contrib/gregbook
- Added exported png_longjmp() function.
- Removed the AIX redefinition of jmpbuf in png.h
- Added -D_ALLSOURCE in configure.ac, makefile.aix, and CMakeLists.txt
- when building on AIX.
-
-Version 1.5.0beta09 [February 19, 2010]
- Removed -D_ALLSOURCE from configure.ac, makefile.aix, and CMakeLists.txt.
- Changed the name of png_ptr->jmpbuf to png_ptr->png_jmpbuf in pngstruct.h
-
-Version 1.5.0beta10 [February 25, 2010]
- Removed unused gzio.c from contrib/pngminim gather and makefile scripts
- Removed replacement error handlers from contrib/gregbook. Because of
- the new png_longjmp() function they are no longer needed.
-
-Version 1.5.0beta11 [March 6, 2010]
- Removed checking for already-included setjmp.h from pngconf.h
- Fixed inconsistent indentations and made numerous cosmetic changes.
- Revised the "SEE ALSO" style of libpng.3, libpngpf.3, and png.5
-
-Version 1.5.0beta12 [March 9, 2010]
- Moved "#include png.h" inside pngpriv.h and removed "#include png.h" from
- the source files, along with "#define PNG_EXPOSE_INTERNAL_STRUCTURES"
- and "#define PNG_NO_PEDANTIC_WARNINGS" (John Bowler).
- Created new pngdebug.h and moved debug definitions there.
-
-Version 1.5.0beta13 [March 10, 2010]
- Protect pngstruct.h, pnginfo.h, and pngdebug.h from being included twice.
- Revise the "#ifdef" blocks in png_inflate() so it will compile when neither
- PNG_USER_CHUNK_MALLOC_MAX nor PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
- is defined.
- Removed unused png_measure_compressed_chunk() from pngpriv.h and libpngpf.3
- Moved the 'config.h' support from pngconf.h to pngpriv.h
- Removed PNGAPI from the png_longjmp_ptr typedef.
- Eliminated dependence of pngtest.c on the private pngdebug.h file.
- Make all png_debug macros into *unterminated* statements or
- expressions (i.e. a trailing ';' must always be added) and correct
- the format statements in various png_debug messages.
-
-Version 1.5.0beta14 [March 14, 2010]
- Removed direct access to png_ptr->io_ptr from the Windows code in pngtest.c
- Revised Makefile.am to account for recent additions and replacements.
- Corrected CE and OS/2 DEF files (scripts/png*def) for symbols removed and
- added ordinal numbers to the Windows DEF file and corrected the duplicated
- ordinal numbers on CE symbols that are commented out.
- Added back in export symbols that can be present in the Windows build but
- are disabled by default.
- PNG_EXPORT changed to include an 'ordinal' field for DEF file generation.
- PNG_CALLBACK added to make callback definitions uniform. PNGAPI split
- into PNGCAPI (base C form), PNGAPI (exports) and PNGCBAPI (callbacks),
- and appropriate changes made to all files. Cygwin builds re-hinged to
- allow procedure call standard changes and to remove the need for the DEF
- file (fixes build on Cygwin).
- Enabled 'attribute' warnings that are relevant to library APIs and callbacks.
- Changed rules for generation of the various symbol files and added a new
- rule for a DEF file (which is also added to the distribution).
- Updated the symbol file generation to stop it adding spurious spaces
- to EOL (coming from preprocessor macro expansion). Added a facility
- to join tokens in the output and rewrite *.dfn to use this.
- Eliminated scripts/*.def in favor of libpng.def; updated projects/visualc71
- and removed scripts/makefile.cygwin.
- Made PNG_BUILD_DLL safe: it can be set whenever a DLL is being built.
- Removed the include of sys/types.h - apparently unnecessary now on the
- platforms on which it happened (all but Mac OS and RISC OS).
- Moved the Mac OS test into pngpriv.h (the only place it is used.)
-
-Version 1.5.0beta15 [March 17, 2010]
- Added symbols.chk target to Makefile.am to validate the symbols in png.h
- against the new DEF file scripts/symbols.def.
- Changed the default DEF file back to pngwin.def.
- Removed makefile.mingw.
- Eliminated PNG_NO_EXTERN and PNG_ALL_EXTERN
-
-Version 1.5.0beta16 [April 1, 2010]
- Make png_text_struct independent of PNG_iTXt_SUPPORTED, so that
- fields are initialized in all configurations. The READ/WRITE
- macros (PNG_(READ|WRITE)_iTXt_SUPPORTED) still function as
- before to disable code to actually read or write iTXt chunks
- and iTXt_SUPPORTED can be used to detect presence of either
- read or write support (but it is probably better to check for
- the one actually required - read or write.)
- Combined multiple png_warning() calls for a single error.
- Restored the macro definition of png_check_sig().
-
-Version 1.5.0beta17 [April 17, 2010]
- Added some "(long)" typecasts to printf calls in png_handle_cHRM().
- Documented the fact that png_set_dither() was disabled since libpng-1.4.0.
- Reenabled png_set_dither() but renamed it to png_set_quantize() to reflect
- more accurately what it actually does. At the same time, renamed
- the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros to
- PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS.
- Added some "(long)" typecasts to printf calls in png_handle_cHRM().
- Freeze build-time only configuration in the build.
- In all prior versions of libpng most configuration options
- controlled by compiler #defines had to be repeated by the
- application code that used libpng. This patch changes this
- so that compilation options that can only be changed at build
- time are frozen in the build. Options that are compiler
- dependent (and those that are system dependent) are evaluated
- each time - pngconf.h holds these. Options that can be changed
- per-file in the application are in png.h. Frozen options are
- in the new installed header file pnglibconf.h (John Bowler)
- Removed the xcode project because it has not been updated to work
- with libpng-1.5.0.
- Removed the ability to include optional pngusr.h
-
-Version 1.5.0beta18 [April 17, 2010]
- Restored the ability to include optional pngusr.h
- Moved replacements for png_error() and png_warning() from the
- contrib/pngminim project to pngerror.c, for use when warnings or
- errors are disabled via PNG_NO_WARN or PNG_NO_ERROR_TEXT, to avoid
- storing unneeded error/warning text.
- Updated contrib/pngminim project to work with the new pnglibconf.h
- Added some PNG_NO_* defines to contrib/pngminim/*/pngusr.h to save space.
-
-Version 1.5.0beta19 [April 24, 2010]
- Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the functions
- to read and write ints to be disabled independently of PNG_USE_READ_MACROS,
- which allows libpng to be built with the functions even though the default
- is to use the macros - this allows applications to choose at app build
- time whether or not to use macros (previously impossible because the
- functions weren't in the default build.)
- Changed Windows calling convention back to __cdecl for API functions.
- For Windows/x86 platforms only:
- __stdcall is no longer needed for Visual Basic, so libpng-1.5.0 uses
- __cdecl throughout (both API functions and callbacks) on Windows/x86
- platforms.
- Replaced visualc6 and visualc71 projects with new vstudio project
- Relaxed the overly-restrictive permissions of some files.
-
-Version 1.5.0beta20 [April 24, 2010]
- Relaxed more overly-restrictive permissions of some files.
-
-Version 1.5.0beta21 [April 27, 2010]
- Removed some unwanted binary bytes and changed CRLF to NEWLINE in the new
- vstudio project files, and some trivial editing of some files in the
- scripts directory.
- Set PNG_NO_READ_BGR, PNG_NO_IO_STATE, and PNG_NO_TIME_RFC1123 in
- contrib/pngminim/decoder/pngusr.h to make a smaller decoder application.
-
-Version 1.5.0beta22 [April 28, 2010]
- Fixed dependencies of GET_INT_32 - it does not require READ_INT_FUNCTIONS
- because it has a macro equivalent.
- Improved the options.awk script; added an "everything off" option.
- Revised contrib/pngminim to use the "everything off" option in pngusr.dfa.
-
-Version 1.5.0beta23 [April 29, 2010]
- Corrected PNG_REMOVED macro to take five arguments.
- The macro was documented with two arguments (name,ordinal), however
- the symbol checking .dfn files assumed five arguments. The five
- argument form seems more useful so it is changed to that.
- Corrected PNG_UNKNOWN_CHUNKS_SUPPORTED to PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- in gregbook/readpng2.c
- Corrected protection of png_get_user_transform_ptr. The API declaration in
- png.h is removed if both READ and WRITE USER_TRANSFORM are turned off
- but was left defined in pngtrans.c
- Added logunsupported=1 to cause pnglibconf.h to document disabled options.
- This makes the installed pnglibconf.h more readable but causes no
- other change. The intention is that users of libpng will find it
- easier to understand if an API they need is missing.
- Include png_reset_zstream() in png.c only when PNG_READ_SUPPORTED is defined.
- Removed dummy_inflate.c from contrib/pngminim/encoder
- Removed contrib/pngminim/*/gather.sh; gathering is now done in the makefile.
-
-Version 1.5.0beta24 [May 7, 2010]
- Use bitwise "&" instead of arithmetic mod in pngrutil.c calculation of the
- offset of the png_ptr->rowbuf pointer into png_ptr->big_row_buf.
- Added more blank lines for readability.
-
-Version 1.5.0beta25 [June 18, 2010]
- In pngpread.c: png_push_have_row() add check for new_row > height
- Removed the now-redundant check for out-of-bounds new_row from example.c
-
-Version 1.5.0beta26 [June 18, 2010]
- In pngpread.c: png_push_process_row() add check for too many rows.
-
-Version 1.5.0beta27 [June 18, 2010]
- Removed the check added in beta25 as it is now redundant.
-
-Version 1.5.0beta28 [June 20, 2010]
- Rewrote png_process_IDAT_data to consistently treat extra data as warnings
- and handle end conditions more cleanly.
- Removed the new (beta26) check in png_push_process_row().
-
-Version 1.5.0beta29 [June 21, 2010]
- Revised scripts/options.awk to work on Sunos (but still doesn't work)
- Added comment to options.awk and contrib/pngminim/*/makefile to try nawk.
-
-Version 1.5.0beta30 [June 22, 2010]
- Stop memory leak when reading a malformed sCAL chunk.
-
-Version 1.5.0beta31 [June 26, 2010]
- Revised pngpread.c patch of beta28 to avoid an endless loop.
- Removed some trailing blanks.
-
-Version 1.5.0beta32 [June 26, 2010]
- Removed leftover scripts/options.patch and scripts/options.rej
-
-Version 1.5.0beta33 [July 6, 3010]
- Made FIXED and FLOATING options consistent in the APIs they enable and
- disable. Corrected scripts/options.awk to handle both command line
- options and options specified in the .dfa files.
- Changed char *msg to PNG_CONST char *msg in pngrutil.c
- Make png_set_sRGB_gAMA_and_cHRM set values using either the fixed or
- floating point APIs, but not both.
- Reversed patch to remove error handler when the jmp_buf is stored in the
- main program structure, not the png_struct.
- The error handler is needed because the default handler in libpng will
- always use the jmp_buf in the library control structure; this is never
- set. The gregbook code is a useful example because, even though it
- uses setjmp/longjmp, it shows how error handling can be implemented
- using control mechanisms not directly supported by libpng. The
- technique will work correctly with mechanisms such as Microsoft
- Structure Exceptions or C++ exceptions (compiler willing - note that gcc
- does not by default support interworking of C and C++ error handling.)
- Reverted changes to call png_longjmp in contrib/gregbook where it is not
- appropriate. If mainprog->jmpbuf is used by setjmp, then png_longjmp
- cannot be used.
- Changed "extern PNG_EXPORT" to "PNG_EXPORT" in png.h (Jan Nijtmans)
- Changed "extern" to "PNG_EXTERN" in pngpriv.h (except for the 'extern "C" {')
-
-Version 1.5.0beta34 [July 12, 2010]
- Put #ifndef PNG_EXTERN, #endif around the define PNG_EXTERN in pngpriv.h
-
-Version 1.5.0beta35 [July 24, 2010]
- Removed some newly-added TAB characters.
- Added -DNO_PNG_SNPRINTF to CFLAGS in scripts/makefile.dj2
- Moved the definition of png_snprintf() outside of the enclosing
- #ifdef blocks in pngconf.h
-
-Version 1.5.0beta36 [July 29, 2010]
- Patches by John Bowler:
- Fixed point APIs are now supported throughout (no missing APIs).
- Internal fixed point arithmetic support exists for all internal floating
- point operations.
- sCAL validates the floating point strings it is passed.
- Safe, albeit rudimentary, Watcom support is provided by PNG_API_RULE==2
- Two new APIs exist to get the number of passes without turning on the
- PNG_INTERLACE transform and to get the number of rows in the current
- pass.
- A new test program, pngvalid.c, validates the gamma code.
- Errors in the 16-bit gamma correction (overflows) have been corrected.
- cHRM chunk testing is done consistently (previously the floating point
- API bypassed it, because the test really didn't work on FP, now the test
- is performed on the actual values to be stored in the PNG file so it
- works in the FP case too.)
- Most floating point APIs now simply call the fixed point APIs after
- converting the values to the fixed point form used in the PNG file.
- The standard headers no longer include zlib.h, which is currently only
- required for pngstruct.h and can therefore be internal.
- Revised png_get_int_32 to undo the PNG two's complement representation of
- negative numbers.
-
-Version 1.5.0beta37 [July 30, 2010]
- Added a typecast in png_get_int_32() in png.h and pngrutil.h to avoid
- a compiler warning.
- Replaced oFFs 0,0 with oFFs -10,20 in pngtest.png
-
-Version 1.5.0beta38 [July 31, 2010]
- Implemented remaining "_fixed" functions.
- Corrected a number of recently introduced warnings mostly resulting from
- safe but uncast assignments to shorter integers. Also added a zlib
- VStudio release library project because the latest zlib Official Windows
- build does not include such a thing.
- Revised png_get_int_16() to be similar to png_get_int_32().
- Restored projects/visualc71.
-
-Version 1.5.0beta39 [August 2, 2010]
- VisualC/GCC warning fixes, VisualC build fixes
- The changes include support for function attributes in VC in addition to
- those already present in GCC - necessary because without these some
- warnings are unavoidable. Fixes include signed/unsigned fixes in
- pngvalid and checks with gcc -Wall -Wextra -Wunused.
- VC requires function attributes on function definitions as well as
- declarations, PNG_FUNCTION has been added to enable this and the
- relevant function definitions changed.
-
-Version 1.5.0beta40 [August 6, 2010]
- Correct use of _WINDOWS_ in pngconf.h
- Removed png_mem_ #defines; they are no longer used.
- Added the sRGB chunk to pngtest.png
-
-Version 1.5.0beta41 [August 11, 2010]
- Added the cHRM chunk to pngtest.png
- Don't try to use version-script with cygwin/mingw.
- Revised contrib/gregbook to work under cygwin/mingw.
-
-Version 1.5.0beta42 [August 18, 2010]
- Add .dll.a to the list of extensions to be symlinked by Makefile.am (Yaakov)
- Made all API functions that have const arguments and constant string
- literal pointers declare them (John Bowler).
-
-Version 1.5.0beta43 [August 20, 2010]
- Removed spurious tabs, shorten long lines (no source change)
- Also added scripts/chkfmt to validate the format of all the files that can
- reasonably be validated (it is suggested to run "make distclean" before
- checking, because some machine generated files have long lines.)
- Reformatted the CHANGES file to be more consistent throughout.
- Made changes to address various issues identified by GCC, mostly
- signed/unsigned and shortening problems on assignment but also a few
- difficult to optimize (for GCC) loops.
- Fixed non-GCC fixed point builds. In png.c a declaration was misplaced
- in an earlier update. Fixed to declare the auto variables at the head.
- Use cexcept.h in pngvalid.c.
-
-Version 1.5.0beta44 [August 24, 2010]
- Updated CMakeLists.txt to use CMAKE_INSTALL_LIBDIR variable; useful for
- installing libpng in /usr/lib64 (Funda Wang).
- Revised CMakeLists.txt to put the man pages in share/man/man* not man/man*
- Revised CMakeLists.txt to make symlinks instead of copies when installing.
- Changed PNG_LIB_NAME from pngNN to libpngNN in CMakeLists.txt (Philip Lowman)
- Implemented memory checks within pngvalid
- Reformatted/rearranged pngvalid.c to assist use of progressive reader.
- Check interlaced images in pngvalid
- Clarified pngusr.h comments in pnglibconf.dfa
- Simplified the pngvalid error-handling code now that cexcept.h is in place.
- Implemented progressive reader in pngvalid.c for standard tests
- Implemented progressive read in pngvalid.c gamma tests
- Turn on progressive reader in pngvalid.c by default and tidy code.
-
-Version 1.5.0beta45 [August 26, 2010]
- Added an explicit make step to projects/vstudio for pnglibconf.h
- Also corrected zlib.vcxproj into which Visual Studio had introduced
- what it calls an "authoring error". The change to make pnglibconf.h
- simply copies the file; in the future it may actually generate the
- file from scripts/pnglibconf.dfa as the other build systems do.
- Changed pngvalid to work when floating point APIs are disabled
- Renamed the prebuilt scripts/pnglibconf.h to scripts/pnglibconf.h.prebuilt
- Supply default values for PNG_USER_PRIVATEBUILD and PNG_USER_DLLFNAME_POSTFIX
- in pngpriv.h in case the user neglected to define them in their pngusr.h
-
-Version 1.5.0beta46 [August 28, 2010]
- Added new private header files to libpng_sources in CMakeLists.txt
- Added PNG_READ_16BIT, PNG_WRITE_16BIT, and PNG_16BIT options.
- Added reference to scripts/pnglibconf.h.prebuilt in the visualc71 project.
-
-Version 1.5.0beta47 [September 11, 2010]
- Fixed a number of problems with 64-bit compilation reported by Visual
- Studio 2010 (John Bowler).
-
-Version 1.5.0beta48 [October 4, 2010]
- Updated CMakeLists.txt (Philip Lowman).
- Revised autogen.sh to recognize and use $AUTOCONF, $AUTOMAKE, $AUTOHEADER,
- $AUTOPOINT, $ACLOCAL and $LIBTOOLIZE
- Fixed problem with symbols creation in Makefile.am which was assuming that
- all versions of ccp write to standard output by default (Martin Banky). The
- bug was introduced in libpng-1.2.9beta5.
- Removed unused mkinstalldirs.
-
-Version 1.5.0beta49 [October 8, 2010]
- Undid Makefile.am revision of 1.5.0beta48.
-
-Version 1.5.0beta50 [October 14, 2010]
- Revised Makefile.in to account for mkinstalldirs being removed.
- Added some "(unsigned long)" typecasts in printf statements in pngvalid.c.
- Suppressed a compiler warning in png_handle_sPLT().
- Check for out-of-range text compression mode in png_set_text().
-
-Version 1.5.0beta51 [October 15, 2010]
- Changed embedded dates to "(PENDING RELEASE) in beta releases (and future
- rc releases) to minimize the difference between releases.
-
-Version 1.5.0beta52 [October 16, 2010]
- Restored some of the embedded dates (in png.h, png.c, documentation, etc.)
-
-Version 1.5.0beta53 [October 18, 2010]
- Updated INSTALL to mention using "make maintainer-clean" and to remove
- obsolete statement about a custom ltmain.sh
- Disabled "color-tests" by default in Makefile.am so it will work with
- automake versions earlier than 1.11.1
- Use document name "libpng-manual.txt" instead of "libpng-<version>.txt"
- to simplify version differences.
- Removed obsolete remarks about setjmp handling from INSTALL.
- Revised and renamed the typedef in png.h and png.c that was designed
- to catch library and header mismatch.
-
-Version 1.5.0beta54 [November 10, 2010]
- Require 48 bytes, not 64 bytes, for big_row_buf in overflow checks.
- Used a consistent structure for the pngget.c functions.
-
-Version 1.5.0beta55 [November 21, 2010]
- Revised png_get_uint_32, png_get_int_32, png_get_uint_16 (Cosmin)
- Moved reading of file signature into png_read_sig (Cosmin)
- Fixed atomicity of chunk header serialization (Cosmin)
- Added test for io_state in pngtest.c (Cosmin)
- Added "#!/bin/sh" at the top of contrib/pngminim/*/gather.sh scripts.
- Changes to remove gcc warnings (John Bowler)
- Certain optional gcc warning flags resulted in warnings in libpng code.
- With these changes only -Wconversion and -Wcast-qual cannot be turned on.
- Changes are trivial rearrangements of code. -Wconversion is not possible
- for pngrutil.c (because of the widespread use of += et al on variables
- smaller than (int) or (unsigned int)) and -Wcast-qual is not possible
- with pngwio.c and pngwutil.c because the 'write' callback and zlib
- compression both fail to declare their input buffers with 'const'.
-
-Version 1.5.0beta56 [December 7, 2010]
- Added the private PNG_UNUSED() macro definition in pngpriv.h.
- Added some commentary about PNG_EXPORT in png.h and pngconf.h
- Revised PNG_EXPORT() macro and added PNG_EXPORTA() macro, with the
- objective of simplifying and improving the cosmetic appearance of png.h.
- Fixed some incorrect "=" macro names in pnglibconf.dfa
- Included documentation of changes in 1.5.0 from 1.4.x in libpng-manual.txt
-
-Version 1.5.0beta57 [December 9, 2010]
- Documented the pngvalid gamma error summary with additional comments and
- print statements.
- Improved missing symbol handling in checksym.awk; symbols missing in both
- the old and new files can now be optionally ignored, treated as errors
- or warnings.
- Removed references to pngvcrd.c and pnggccrd.c from the vstudio project.
- Updated "libpng14" to "libpng15" in the visualc71 project.
- Enabled the strip16 tests in pngvalid.`
- Don't display test results (except PASS/FAIL) when running "make test".
- Instead put them in pngtest-log.txt
- Added "--with-zprefix=<string>" to configure.ac
- Updated the prebuilt configuration files to autoconf version 2.68
-
-Version 1.5.0beta58 [December 19, 2010]
- Fixed interlace image handling and add test cases (John Bowler)
- Fixed the clean rule in Makefile.am to remove pngtest-log.txt
- Made minor changes to work around warnings in gcc 3.4
-
-Version 1.5.0rc01 [December 27, 2010]
- No changes.
-
-Version 1.5.0rc02 [December 27, 2010]
- Eliminated references to the scripts/*.def files in project/visualc71.
-
-Version 1.5.0rc03 [December 28, 2010]
- Eliminated scripts/*.def and revised Makefile.am accordingly
-
-Version 1.5.0rc04 [December 29, 2010]
- Fixed bug in background transformation handling in pngrtran.c (it was
- looking for the flag in png_ptr->transformations instead of in
- png_ptr->flags) (David Raymond).
-
-Version 1.5.0rc05 [December 31, 2010]
- Fixed typo in a comment in CMakeLists.txt (libpng14 => libpng15) (Cosmin)
-
-Version 1.5.0rc06 [January 4, 2011]
- Changed the new configure option "zprefix=string" to "zlib-prefix=string"
-
-Version 1.5.0rc07 [January 4, 2011]
- Updated copyright year.
-
-Version 1.5.0 [January 6, 2011]
- No changes.
-
-version 1.5.1beta01 [January 8, 2011]
- Added description of png_set_crc_action() to the manual.
- Added a note in the manual that the type of the iCCP profile was changed
- from png_charpp to png_bytepp in png_get_iCCP(). This change happened
- in version 1.5.0beta36 but is not noted in the CHANGES. Similarly,
- it was changed from png_charpp to png_const_bytepp in png_set_iCCP().
- Ensure that png_rgb_to_gray ignores palette mapped images, if libpng
- internally happens to call it with one, and fixed a failure to handle
- palette mapped images correctly. This fixes CVE-2690.
-
-Version 1.5.1beta02 [January 14, 2011]
- Fixed a bug in handling of interlaced images (bero at arklinux.org).
- Updated CMakeLists.txt (Clifford Yapp)
-
-Version 1.5.1beta03 [January 14, 2011]
- Fixed typecasting of some png_debug() statements (Cosmin)
-
-Version 1.5.1beta04 [January 16, 2011]
- Updated documentation of png_set|get_tRNS() (Thomas Klausner).
- Mentioned in the documentation that applications must #include "zlib.h"
- if they need access to anything in zlib.h, and that a number of
- macros such as png_memset() are no longer accessible by applications.
- Corrected pngvalid gamma test "sample" function to access all of the color
- samples of each pixel, instead of sampling the red channel three times.
- Prefixed variable names index, div, exp, gamma with "png_" to avoid "shadow"
- warnings, and (mistakenly) changed png_exp() to exp().
-
-Version 1.5.1beta05 [January 16, 2011]
- Changed variable names png_index, png_div, png_exp, and png_gamma to
- char_index, divisor, exp_b10, and gamma_val, respectively, and
- changed exp() back to png_exp().
-
-Version 1.5.1beta06 [January 20, 2011]
- Prevent png_push_crc_skip() from hanging while reading an unknown chunk
- or an over-large compressed zTXt chunk with the progressive reader.
- Eliminated more GCC "shadow" warnings.
- Revised png_fixed() in png.c to avoid compiler warning about reaching the
- end without returning anything.
-
-Version 1.5.1beta07 [January 22, 2011]
- In the manual, describe the png_get_IHDR() arguments in the correct order.
- Added const_png_structp and const_png_infop types, and used them in
- prototypes for most png_get_*() functions.
-
-Version 1.5.1beta08 [January 23, 2011]
- Added png_get_io_chunk_type() and deprecated png_get_io_chunk_name()
- Added synopses for the IO_STATE functions and other missing synopses
- to the manual. Removed the synopses from libpngpf.3 because they
- were out of date and no longer useful. Better information can be
- obtained by reading the prototypes and comments in pngpriv.h
- Attempted to fix cpp on Solaris with S. Studio 12 cc, fix build
- Added a make macro DFNCPP that is a CPP that will accept the tokens in
- a .dfn file and adds configure stuff to test for such a CPP. ./configure
- should fail if one is not available.
- Corrected const_png_ in png.h to png_const_ to avoid polluting the namespace.
- Added png_get_current_row_number and png_get_current_pass_number for the
- benefit of the user transform callback.
- Added png_process_data_pause and png_process_data_skip for the benefit of
- progressive readers that need to stop data processing or want to optimize
- skipping of unread data (e.g., if the reader marks a chunk to be skipped.)
-
-Version 1.5.1beta09 [January 24, 2011]
- Enhanced pngvalid, corrected an error in gray_to_rgb, corrected doc error.
- pngvalid contains tests of transforms, which tests are currently disabled
- because they are incompletely tested. gray_to_rgb was failing to expand
- the bit depth for smaller bit depth images; this seems to be a long
- standing error and resulted, apparently, in invalid output
- (CVE-2011-0408, CERT VU#643140). The documentation did not accurately
- describe what libpng really does when converting RGB to gray.
-
-Version 1.5.1beta10 [January 27, 2010]
- Fixed incorrect examples of callback prototypes in the manual, that were
- introduced in libpng-1.0.0.
- In addition the order of the png_get_uint macros with respect to the
- relevant function definitions has been reversed. This helps the
- preprocessing of the symbol files be more robust. Furthermore, the
- symbol file preprocessing now uses -DPNG_NO_USE_READ_MACROS even when
- the library may actually be built with PNG_USE_READ_MACROS; this stops
- the read macros interfering with the symbol file format.
- Made the manual, synopses, and function prototypes use the function
- argument names file_gamma, int_file_gamma, and srgb_intent consistently.
-
-Version 1.5.1beta11 [January 28, 2011]
- Changed PNG_UNUSED from "param=param;" to "{if(param){}}".
- Corrected local variable type in new API png_process_data_skip()
- The type was self-evidently incorrect but only causes problems on 64-bit
- architectures.
- Added transform tests to pngvalid and simplified the arguments.
-
-Version 1.5.1rc01 [January 29, 2011]
- No changes.
-
-Version 1.5.1rc02 [January 31, 2011]
- Added a request in the manual that applications do not use "png_" or
- "PNG_" to begin any of their own symbols.
- Changed PNG_UNUSED to "(void)param;" and updated the commentary in pngpriv.h
-
-Version 1.5.1 [February 3, 2011]
- No changes.
-
-Version 1.5.2beta01 [February 13, 2011]
- More -Wshadow fixes for older gcc compilers. Older gcc versions apparently
- check formal parameters names in function declarations (as well as
- definitions) to see if they match a name in the global namespace.
- Revised PNG_EXPORTA macro to not use an empty parameter, to accommodate the
- old VisualC++ preprocessor.
- Turned on interlace handling in png_read_png().
- Fixed gcc pendantic warnings.
- Handle longjmp in Cygwin.
- Fixed png_get_current_row_number() in the interlaced case.
- Cleaned up ALPHA flags and transformations.
- Implemented expansion to 16 bits.
-
-Version 1.5.2beta02 [February 19, 2011]
- Fixed mistake in the descriptions of user read_transform and write_transform
- function prototypes in the manual. The row_info struct is png_row_infop.
- Reverted png_get_current_row_number() to previous (1.5.2beta01) behavior.
- Corrected png_get_current_row_number documentation
- Fixed the read/write row callback documentation.
- This documents the current behavior, where the callback is called after
- every row with information pertaining to the next row.
-
-Version 1.5.2beta03 [March 3, 2011]
- Fixed scripts/makefile.vcwin32
- Updated contrib/pngsuite/README to add the word "modify".
- Define PNG_ALLOCATED to blank when _MSC_VER<1300.
-
-Version 1.5.2rc01 [March 19, 2011]
- Define remaining attributes to blank when MSC_VER<1300.
- ifdef out mask arrays in pngread.c when interlacing is not supported.
-
-Version 1.5.2rc02 [March 22, 2011]
- Added a hint to try CPP=/bin/cpp if "cpp -E" fails in scripts/pnglibconf.mak
- and in contrib/pngminim/*/makefile, eg., on SunOS 5.10, and removed "strip"
- from the makefiles.
- Fixed a bug (present since libpng-1.0.7) that makes png_handle_sPLT() fail
- to compile when PNG_NO_POINTER_INDEXING is defined (Chubanov Kirill)
-
-Version 1.5.2rc03 [March 24, 2011]
- Don't include standard header files in png.h while building the symbol table,
- to avoid cpp failure on SunOS (introduced PNG_BUILDING_SYMBOL_TABLE macro).
-
-Version 1.5.2 [March 31, 2011]
- No changes.
-
-Version 1.5.3beta01 [April 1, 2011]
- Re-initialize the zlib compressor before compressing non-IDAT chunks.
- Added API functions (png_set_text_compression_level() and four others) to
- set parameters for zlib compression of non-IDAT chunks.
-
-Version 1.5.3beta02 [April 3, 2011]
- Updated scripts/symbols.def with new API functions.
- Only compile the new zlib re-initializing code when text or iCCP is
- supported, using PNG_WRITE_COMPRESSED_TEXT_SUPPORTED macro.
- Improved the optimization of the zlib CMF byte (see libpng-1.2.6beta03).
- Optimize the zlib CMF byte in non-IDAT compressed chunks
-
-Version 1.5.3beta03 [April 16, 2011]
- Fixed gcc -ansi -pedantic compile. A strict ANSI system does not have
- snprintf, and the "__STRICT_ANSI__" detects that condition more reliably
- than __STDC__ (John Bowler).
- Removed the PNG_PTR_NORETURN attribute because it too dangerous. It tells
- the compiler that a user supplied callback (the error handler) does not
- return, yet there is no guarantee in practice that the application code
- will correctly implement the error handler because the compiler only
- issues a warning if there is a mistake (John Bowler).
- Removed the no-longer-used PNG_DEPSTRUCT macro.
- Updated the zlib version to 1.2.5 in the VStudio project.
- Fixed 64-bit builds where png_uint_32 is smaller than png_size_t in
- pngwutil.c (John Bowler).
- Fixed bug with stripping the filler or alpha channel when writing, that
- was introduced in libpng-1.5.2beta01 (bug report by Andrew Church).
-
-Version 1.5.3beta04 [April 27, 2011]
- Updated pngtest.png with the new zlib CMF optimization.
- Cleaned up conditional compilation code and of background/gamma handling
- Internal changes only except a new option to avoid compiling the
- png_build_grayscale_palette API (which is not used at all internally.)
- The main change is to move the transform tests (READ_TRANSFORMS,
- WRITE_TRANSFORMS) up one level to the caller of the APIs. This avoids
- calls to spurious functions if all transforms are disabled and slightly
- simplifies those functions. Pngvalid modified to handle this.
- A minor change is to stop the strip_16 and expand_16 interfaces from
- disabling each other; this allows the future alpha premultiplication
- code to use 16-bit intermediate values while still producing 8-bit output.
- png_do_background and png_do_gamma have been simplified to take a single
- pointer to the png_struct rather than pointers to every item required
- from the png_struct. This makes no practical difference to the internal
- code.
- A serious bug in the pngvalid internal routine 'standard_display_init' has
- been fixed - this failed to initialize the red channel and accidentally
- initialized the alpha channel twice.
- Changed png_struct jmp_buf member name from png_jmpbuf to tmp_jmpbuf to
- avoid a possible clash with the png_jmpbuf macro on some platforms.
-
-Version 1.5.3beta05 [May 6, 2011]
- Added the "_POSIX_SOURCE" feature test macro to ensure libpng sees the
- correct API. _POSIX_SOURCE is defined in pngpriv.h, pngtest.c and
- pngvalid.c to ensure that POSIX conformant systems disable non-POSIX APIs.
- Removed png_snprintf and added formatted warning messages. This change adds
- internal APIs to allow png_warning messages to have parameters without
- requiring the host OS to implement snprintf. As a side effect the
- dependency of the tIME-supporting RFC1132 code on stdio is removed and
- PNG_NO_WARNINGS does actually work now.
- Pass "" instead of '\0' to png_default_error() in png_err(). This mistake
- was introduced in libpng-1.2.20beta01. This fixes CVE-2011-2691.
- Added PNG_WRITE_OPTIMIZE_CMF_SUPPORTED macro to make the zlib "CMF" byte
- optimization configureable.
- IDAT compression failed if preceded by a compressed text chunk (bug
- introduced in libpng-1.5.3beta01-02). This was because the attempt to
- reset the zlib stream in png_write_IDAT happened after the first IDAT
- chunk had been deflated - much too late. In this change internal
- functions were added to claim/release the z_stream and, hopefully, make
- the code more robust. Also deflateEnd checking is added - previously
- libpng would ignore an error at the end of the stream.
-
-Version 1.5.3beta06 [May 8, 2011]
- Removed the -D_ALL_SOURCE from definitions for AIX in CMakeLists.txt
- Implemented premultiplied alpha support: png_set_alpha_mode API
-
-Version 1.5.3beta07 [May 11, 2011]
- Added expand_16 support to the high level interface.
- Added named value and 'flag' gamma support to png_set_gamma. Made a minor
- change from the previous (unreleased) ABI/API to hide the exact value used
- for Macs - it's not a good idea to embed this in the ABI!
- Moved macro definitions for PNG_HAVE_IHDR, PNG_HAVE_PLTE, and PNG_AFTER_IDAT
- from pngpriv.h to png.h because they must be visible to applications
- that call png_set_unknown_chunks().
- Check for up->location !PNG_AFTER_IDAT when writing unknown chunks
- before IDAT.
-
-Version 1.5.3beta08 [May 16, 2011]
- Improved "pngvalid --speed" to exclude more of pngvalid from the time.
- Documented png_set_alpha_mode(), other changes in libpng.3/libpng-manual.txt
- The cHRM chunk now sets the defaults for png_set_rgb_to_gray() (when negative
- parameters are supplied by the caller), while in the absence of cHRM
- sRGB/Rec 709 values are still used. This introduced a divide-by-zero
- bug in png_handle_cHRM().
- The bKGD chunk no longer overwrites the background value set by
- png_set_background(), allowing the latter to be used before the file
- header is read. It never performed any useful function to override
- the default anyway.
- Added memory overwrite and palette image checks to pngvalid.c
- Previously palette image code was poorly checked. Since the transformation
- code has a special palette path in most cases this was a severe weakness.
- Minor cleanup and some extra checking in pngrutil.c and pngrtran.c. When
- expanding an indexed image, always expand to RGBA if transparency is
- present.
-
-Version 1.5.3beta09 [May 17, 2011]
- Reversed earlier 1.5.3 change of transformation order; move png_expand_16
- back where it was. The change doesn't work because it requires 16-bit
- gamma tables when the code only generates 8-bit ones. This fails
- silently; the libpng code just doesn't do any gamma correction. Moving
- the tests back leaves the old, inaccurate, 8-bit gamma calculations, but
- these are clearly better than none!
-
-Version 1.5.3beta10 [May 20, 2011]
-
- png_set_background() and png_expand_16() did not work together correctly.
- This problem is present in 1.5.2; if png_set_background is called with
- need_expand false and the matching 16 bit color libpng erroneously just
- treats it as an 8-bit color because of where png_do_expand_16 is in the
- transform list. This simple fix reduces the supplied colour to 8-bits,
- so it gets smashed, but this is better than the current behavior.
- Added tests for expand16, more fixes for palette image tests to pngvalid.
- Corrects the code for palette image tests and disables attempts to
- validate palette colors.
-
-Version 1.5.3rc01 [June 3, 2011]
- No changes.
-
-Version 1.5.3rc02 [June 8, 2011]
- Fixed uninitialized memory read in png_format_buffer() (Bug report by
- Frank Busse, CVE-2011-2501, related to CVE-2004-0421).
-
-Version 1.5.3beta11 [June 11, 2011]
- Fixed png_handle_sCAL which is broken in 1.5. This fixes CVE 2011-2692.
- Added sCAL to pngtest.png
- Revised documentation about png_set_user_limits() to say that it also affects
- png writing.
- Revised handling of png_set_user_limits() so that it can increase the
- limit beyond the PNG_USER_WIDTH|HEIGHT_MAX; previously it could only
- reduce it.
- Make the 16-to-8 scaling accurate. Dividing by 256 with no rounding is
- wrong (high by one) 25% of the time. Dividing by 257 with rounding is
- wrong in 128 out of 65536 cases. Getting the right answer all the time
- without division is easy.
- Added "_SUPPORTED" to the PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION macro.
- Added projects/owatcom, an IDE project for OpenWatcom to replace
- scripts/makefile.watcom. This project works with OpenWatcom 1.9. The
- IDE autogenerates appropriate makefiles (libpng.mk) for batch processing.
- The project is configurable, unlike the Visual Studio project, so long
- as the developer has an awk.
- Changed png_set_gAMA to limit the gamma value range so that the inverse
- of the stored value cannot overflow the fixed point representation,
- and changed other things OpenWatcom warns about.
- Revised pngvalid.c to test PNG_ALPHA_MODE_SUPPORTED correctly. This allows
- pngvalid to build when ALPHA_MODE is not supported, which is required if
- it is to build on libpng 1.4.
- Removed string/memory macros that are no longer used and are not
- necessarily fully supportable, particularly png_strncpy and png_snprintf.
- Added log option to pngvalid.c and attempted to improve gamma messages.
-
-Version 1.5.3 [omitted]
- People found the presence of a beta release following an rc release
- to be confusing; therefore we bump the version to libpng-1.5.4beta01
- and there will be no libpng-1.5.3 release.
-
-Version 1.5.4beta01 [June 14, 2011]
- Made it possible to undefine PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
- to get the same (inaccurate) output as libpng-1.5.2 and earlier.
- Moved definitions of PNG_HAVE_IHDR, PNG_AFTER_IDAT, and PNG_HAVE_PLTE
- outside of an unknown-chunk block in png.h because they are also
- needed for other uses.
-
-Version 1.5.4beta02 [June 14, 2011]
- Fixed and clarified LEGACY 16-to-8 scaling code.
- Added png_set_chop_16() API, to match inaccurate results from previous
- libpng versions.
- Removed the ACCURATE and LEGACY options (they are no longer useable)
- Use the old scaling method for background if png_set_chop_16() was
- called.
- Made png_set_chop_16() API removeable by disabling PNG_CHOP_16_TO_8_SUPPORTED
-
-Version 1.5.4beta03 [June 15, 2011]
- Fixed a problem in png_do_expand_palette() exposed by optimization in
- 1.5.3beta06
- Also removed a spurious and confusing "trans" member ("trans") from png_info.
- The palette expand optimization prevented expansion to an intermediate RGBA
- form if tRNS was present but alpha was marked to be stripped; this exposed
- a check for tRNS in png_do_expand_palette() which is inconsistent with the
- code elsewhere in libpng.
- Correction to the expand_16 code; removed extra instance of
- png_set_scale_16_to_8 from pngpriv.h
-
-Version 1.5.4beta04 [June 16, 2011]
- Added a missing "#ifdef PNG_READ_BACKGROUND_SUPPORTED/#endif" in pngrtran.c
- Added PNG_TRANSFORM_CHOP_16 to the high-level read transforms.
- Made PNG_READ_16_TO_8_ACCURATE_SCALE configurable again. If this is
- not enabled, png_set_strip_16() and png_do_scale_16_to_8() aren't built.
- Revised contrib/visupng, gregbook, and pngminim to demonstrate chop_16_to_8
-
-Version 1.5.4beta05 [June 16, 2011]
- Renamed png_set_strip_16() to png_set_scale_16() and renamed
- png_set_chop_16() to png_set_strip(16) in an attempt to minimize the
- behavior changes between libpng14 and libpng15.
-
-Version 1.5.4beta06 [June 18, 2011]
- Fixed new bug that was causing both strip_16 and scale_16 to be applied.
-
-Version 1.5.4beta07 [June 19, 2011]
- Fixed pngvalid, simplified macros, added checking for 0 in sCAL.
- The ACCURATE scale macro is no longer defined in 1.5 - call the
- png_scale_16_to_8 API. Made sure that PNG_READ_16_TO_8 is still defined
- if the png_strip_16_to_8 API is present. png_check_fp_number now
- maintains some state so that positive, negative and zero values are
- identified. sCAL uses these to be strictly spec conformant.
-
-Version 1.5.4beta08 [June 23, 2011]
- Fixed pngvalid if ACCURATE_SCALE is defined.
- Updated scripts/pnglibconf.h.prebuilt.
-
-Version 1.5.4rc01 [June 30, 2011]
- Define PNG_ALLOCATED to "restrict" only if MSC_VER >= 1400.
-
-Version 1.5.4 [July 7, 2011]
- No changes.
-
-Version 1.5.5beta01 [July 13, 2011]
- Fixed some typos and made other minor changes in the manual.
- Updated contrib/pngminus/makefile.std (Samuli Souminen)
-
-Version 1.5.5beta02 [July 14, 2011]
- Revised Makefile.am and Makefile.in to look in the right directory for
- pnglibconf.h.prebuilt
-
-Version 1.5.5beta03 [July 27, 2011]
- Enabled compilation with g++ compiler. This compiler does not recognize
- the file extension, so it always compiles with C++ rules. Made minor
- changes to pngrutil.c to cast results where C++ expects it but C does not.
- Minor editing of libpng.3 and libpng-manual.txt.
-
-Version 1.5.5beta04 [July 29, 2011]
- Revised CMakeLists.txt (Clifford Yapp)
- Updated commentary about the png_rgb_to_gray() default coefficients
- in the manual and in pngrtran.c
-
-Version 1.5.5beta05 [August 17, 2011]
- Prevent unexpected API exports from non-libpng DLLs on Windows. The "_DLL"
- is removed from the test of whether a DLL is being built (this erroneously
- caused the libpng APIs to be marked as DLL exports in static builds under
- Microsoft Visual Studio). Almost all of the libpng building configuration
- is moved from pngconf.h to pngpriv.h, but PNG_DLL_EXPORT remains in
- pngconf.h, though, so that it is colocated with the import definition (it
- is no longer used anywhere in the installed headers). The VStudio project
- definitions have been cleaned up: "_USRDLL" has been removed from the
- static library builds (this was incorrect), and PNG_USE_DLL has been added
- to pngvalid to test the functionality (pngtest does not supply it,
- deliberately). The spurious "_EXPORTS" has been removed from the
- libpng build (all these errors were a result of copy/paste between project
- configurations.)
- Added new types and internal functions for CIE RGB end point handling to
- pngpriv.h (functions yet to be implemented).
-
-Version 1.5.5beta06 [August 26, 2011]
- Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set in CMakeLists.txt
- (Clifford Yap)
- Fixes to rgb_to_gray and cHRM XYZ APIs (John Bowler):
- The rgb_to_gray code had errors when combined with gamma correction.
- Some pixels were treated as true grey when they weren't and such pixels
- and true grey ones were not gamma corrected (the original value of the
- red component was used instead). APIs to get and set cHRM using color
- space end points have been added and the rgb_to_gray code that defaults
- based on cHRM, and the divide-by-zero bug in png_handle_cHRM (CERT
- VU#477046, CVE-2011-3328, introduced in 1.5.4) have been corrected.
- A considerable number of tests has been added to pngvalid for the
- rgb_to_gray transform.
- Arithmetic errors in rgb_to_gray whereby the calculated gray value was
- truncated to the bit depth rather than rounded have been fixed except in
- the 8-bit non-gamma-corrected case (where consistency seems more important
- than correctness.) The code still has considerable inaccuracies in the
- 8-bit case because 8-bit linear arithmetic is used.
-
-Version 1.5.5beta07 [September 7, 2011]
- Added "$(ARCH)" option to makefile.darwin
- Added SunOS support to configure.ac and Makefile.am
- Changed png_chunk_benign_error() to png_warning() in png.c, in
- png_XYZ_from_xy_checked().
-
-Version 1.5.5beta08 [September 10, 2011]
- Fixed 64-bit compilation errors (gcc). The errors fixed relate
- to conditions where types that are 32 bits in the GCC 32-bit
- world (uLong and png_size_t) become 64 bits in the 64-bit
- world. This produces potential truncation errors which the
- compiler correctly flags.
- Relocated new HAVE_SOLARIS_LD definition in configure.ac
- Constant changes for 64-bit compatibility (removal of L suffixes). The
- 16-bit cases still use "L" as we don't have a 16-bit test system.
-
-Version 1.5.5rc01 [September 15, 2011]
- Removed "L" suffixes in pngpriv.h
-
-Version 1.5.5 [September 22, 2011]
- No changes.
-
-Version 1.5.6beta01 [September 22, 2011]
- Fixed some 64-bit type conversion warnings in pngrtran.c
- Moved row_info from png_struct to a local variable.
- The various interlace mask arrays have been made into arrays of
- bytes and made PNG_CONST and static (previously some arrays were
- marked PNG_CONST and some weren't).
- Additional checks have been added to the transform code to validate the
- pixel depths after the transforms on both read and write.
- Removed some redundant code from pngwrite.c, in png_destroy_write_struct().
- Changed chunk reading/writing code to use png_uint_32 instead of png_byte[4].
- This removes the need to allocate temporary strings for chunk names on
- the stack in the read/write code. Unknown chunk handling still uses the
- string form because this is exposed in the API.
-
-Version 1.5.6beta02 [September 26, 2011]
- Added a note in the manual the png_read_update_info() must be called only
- once with a particular info_ptr.
- Fixed a typo in the definition of the new PNG_STRING_FROM_CHUNK(s,c) macro.
-
-Version 1.5.6beta03 [September 28, 2011]
- Revised test-pngtest.sh to report FAIL when pngtest fails.
- Added "--strict" option to pngtest, to report FAIL when the failure is
- only because the resulting valid files are different.
- Revised CMakeLists.txt to work with mingw and removed some material from
- CMakeLists.txt that is no longer useful in libpng-1.5.
-
-Version 1.5.6beta04 [October 5, 2011]
- Fixed typo in Makefile.in and Makefile.am ("-M Wl" should be "-M -Wl")."
-
-Version 1.5.6beta05 [October 12, 2011]
- Speed up png_combine_row() for interlaced images. This reduces the generality
- of the code, allowing it to be optimized for Adam7 interlace. The masks
- passed to png_combine_row() are now generated internally, avoiding
- some code duplication and localizing the interlace handling somewhat.
- Align png_struct::row_buf - previously it was always unaligned, caused by
- a bug in the code that attempted to align it; the code needs to subtract
- one from the pointer to take account of the filter byte prepended to
- each row.
- Optimized png_combine_row() when rows are aligned. This gains a small
- percentage for 16-bit and 32-bit pixels in the typical case where the
- output row buffers are appropriately aligned. The optimization was not
- previously possible because the png_struct buffer was always misaligned.
- Fixed bug in png_write_chunk_header() debug print, introduced in 1.5.6beta01.
-
-Version 1.5.6beta06 [October 17, 2011]
- Removed two redundant tests for unitialized row.
- Fixed a relatively harmless memory overwrite in compressed text writing
- with a 1 byte zlib buffer.
- Add ability to call png_read_update_info multiple times to pngvalid.c.
- Fixes for multiple calls to png_read_update_info. These fixes attend to
- most of the errors revealed in pngvalid, however doing the gamma work
- twice results in inaccuracies that can't be easily fixed. There is now
- a warning in the code if this is going to happen.
- Turned on multiple png_read_update_info in pngvalid transform tests.
- Prevent libpng from overwriting unused bits at the end of the image when
- it is not byte aligned, while reading. Prior to libpng-1.5.6 libpng would
- overwrite the partial byte at the end of each row if the row width was not
- an exact multiple of 8 bits and the image is not interlaced.
-
-Version 1.5.6beta07 [October 21, 2011]
- Made png_ptr->prev_row an aligned pointer into png_ptr->big_prev_row
- (Mans Rullgard).
-
-Version 1.5.6rc01 [October 26, 2011]
- Changed misleading "Missing PLTE before cHRM" warning to "Out of place cHRM"
-
-Version 1.5.6rc02 [October 27, 2011]
- Added LSR() macro to defend against buggy compilers that evaluate non-taken
- code branches and complain about out-of-range shifts.
-
-Version 1.5.6rc03 [October 28, 2011]
- Renamed the LSR() macro to PNG_LSR() and added PNG_LSL() macro.
- Fixed compiler warnings with Intel and MSYS compilers. The logical shift
- fix for Microsoft Visual C is required by other compilers, so this
- enables that fix for all compilers when using compile-time constants.
- Under MSYS 'byte' is a name declared in a system header file, so we
- changed the name of a local variable to avoid the warnings that result.
- Added #define PNG_ALIGN_TYPE PNG_ALIGN_NONE to contrib/pngminim/*/pngusr.h
-
-Version 1.5.6 [November 3, 2011]
- No changes.
-
-Version 1.5.7beta01 [November 4, 2011]
- Added support for ARM processor, when decoding all PNG up-filtered rows
- and any other-filtered rows with 3 or 4 bytes per pixel (Mans Rullgard).
- Fixed bug in pngvalid on early allocation failure; fixed type cast in
- pngmem.c; pngvalid would attempt to call png_error() if the allocation
- of a png_struct or png_info failed. This would probably have led to a
- crash. The pngmem.c implementation of png_malloc() included a cast
- to png_size_t which would fail on large allocations on 16-bit systems.
- Fix for the preprocessor of the Intel C compiler. The preprocessor
- splits adjacent @ signs with a space; this changes the concatentation
- token from @-@-@ to PNG_JOIN; that should work with all compiler
- preprocessors.
- Paeth filter speed improvements from work by Siarhei Siamashka. This
- changes the 'Paeth' reconstruction function to improve the GCC code
- generation on x86. The changes are only part of the suggested ones;
- just the changes that definitely improve speed and remain simple.
- The changes also slightly increase the clarity of the code.
-
-Version 1.5.7beta02 [November 11, 2011]
- Check compression_type parameter in png_get_iCCP and remove spurious
- casts. The compression_type parameter is always assigned to, so must
- be non-NULL. The cast of the profile length potentially truncated the
- value unnecessarily on a 16-bit int system, so the cast of the (byte)
- compression type to (int) is specified by ANSI-C anyway.
- Fixed FP division by zero in pngvalid.c; the 'test_pixel' code left
- the sBIT fields in the test pixel as 0, which resulted in a floating
- point division by zero which was irrelevant but causes systems where
- FP exceptions cause a crash. Added code to pngvalid to turn on FP
- exceptions if the appropriate glibc support is there to ensure this is
- tested in the future.
- Updated scripts/pnglibconf.mak and scripts/makefile.std to handle the
- new PNG_JOIN macro.
- Added versioning to pnglibconf.h comments.
- Simplified read/write API initial version; basic read/write tested on
- a variety of images, limited documentation (in the header file.)
- Installed more accurate linear to sRGB conversion tables. The slightly
- modified tables reduce the number of 16-bit values that
- convert to an off-by-one 8-bit value. The "makesRGB.c" code that was used
- to generate the tables is now in a contrib/sRGBtables sub-directory.
-
-Version 1.5.7beta03 [November 17, 2011]
- Removed PNG_CONST from the sRGB table declarations in pngpriv.h and png.c
- Added run-time detection of NEON support.
- Added contrib/libtests; includes simplified API test and timing test and
- a color conversion utility for rapid checking of failed 'pngstest' results.
- Multiple transform bug fixes plus a work-round for double gamma correction.
- libpng does not support more than one transform that requires linear data
- at once - if this is tried typically the results is double gamma
- correction. Since the simplified APIs can need rgb to gray combined with
- a compose operation it is necessary to do one of these outside the main
- libpng transform code. This check-in also contains fixes to various bugs
- in the simplified APIs themselves and to some bugs in compose and rgb to
- gray (on palette) itself.
- Fixes for C++ compilation using g++ When libpng source is compiled
- using g++. The compiler imposes C++ rules on the C source; thus it
- is desireable to make the source work with either C or C++ rules
- without throwing away useful error information. This change adds
- png_voidcast to allow C semantic (void*) cases or the corresponding
- C++ static_cast operation, as appropriate.
- Added --noexecstack to assembler file compilation. GCC does not set
- this on assembler compilation, even though it does on C compilation.
- This creates security issues if assembler code is enabled; the
- work-around is to set it by default in the flags for $(CCAS)
- Work around compilers that don't support declaration of const data. Some
- compilers fault 'extern const' data declarations (because the data is
- not initialized); this turns on const-ness only for compilers where
- this is known to work.
-
-Version 1.5.7beta04 [November 17, 2011]
- Since the gcc driver does not recognize the --noexecstack flag, we must
- use the -Wa prefix to have it passed through to the assembler.
- Also removed a duplicate setting of this flag.
- Added files that were omitted from the libpng-1.5.7beta03 zip distribution.
-
-Version 1.5.7beta05 [November 25, 2011]
- Removed "zTXt" from warning in generic chunk decompression function.
- Validate time settings passed to pngset() and png_convert_to_rfc1123()
- (Frank Busse).
- Added MINGW support to CMakeLists.txt
- Reject invalid compression flag or method when reading the iTXt chunk.
- Backed out 'simplified' API changes. The API seems too complex and there
- is a lack of consensus or enthusiasm for the proposals. The API also
- reveals significant bugs inside libpng (double gamma correction and the
- known bug of being unable to retrieve a corrected palette). It seems
- better to wait until the bugs, at least, are corrected.
- Moved pngvalid.c into contrib/libtests
- Rebuilt Makefile.in, configure, etc., with autoconf-2.68
-
-Version 1.5.7rc01 [December 1, 2011]
- Replaced an "#if" with "#ifdef" in pngrtran.c
- Revised #if PNG_DO_BC block in png.c (use #ifdef and add #else)
-
-Version 1.5.7rc02 [December 5, 2011]
- Revised project files and contrib/pngvalid/pngvalid.c to account for
- the relocation of pngvalid into contrib/libtests.
- Revised pngconf.h to use " __declspec(restrict)" only when MSC_VER >= 1400,
- as in libpng-1.5.4.
- Put CRLF line endings in the owatcom project files.
-
-Version 1.5.7rc03 [December 7, 2011]
- Updated CMakeLists.txt to account for the relocation of pngvalid.c
-
-Version 1.5.7 [December 15, 2011]
- Minor fixes to pngvalid.c for gcc 4.6.2 compatibility to remove warnings
- reported by earlier versions.
- Fixed minor memset/sizeof errors in pngvalid.c.
-
-Version 1.6.0beta01 [December 15, 2011]
- Removed machine-generated configure files from the GIT repository (they will
- continue to appear in the tarball distributions and in the libpng15 and
- earlier GIT branches).
- Restored the new 'simplified' API, which was started in libpng-1.5.7beta02
- but later deleted from libpng-1.5.7beta05.
- Added example programs for the new 'simplified' API.
- Added ANSI-C (C90) headers and require them, and take advantage of the
- change. Also fixed some of the projects/* and contrib/* files that needed
- updates for libpng16 and the move of pngvalid.c.
- With this change the required ANSI-C header files are assumed to exist: the
- implementation must provide float.h, limits.h, stdarg.h and stddef.h and
- libpng relies on limits.h and stddef.h existing and behaving as defined
- (the other two required headers aren't used). Non-ANSI systems that don't
- have stddef.h or limits.h will have to provide an appropriate fake
- containing the relevant types and #defines.
- The use of FAR/far has been eliminated and the definition of png_alloc_size_t
- is now controlled by a flag so that 'small size_t' systems can select it
- if necessary. Libpng 1.6 may not currently work on such systems -- it
- seems likely that it will ask 'malloc' for more than 65535 bytes with any
- image that has a sufficiently large row size (rather than simply failing
- to read such images).
- New tools directory containing tools used to generate libpng code.
- Fixed race conditions in parallel make builds. With higher degrees of
- parallelism during 'make' the use of the same temporary file names such
- as 'dfn*' can result in a race where a temporary file from one arm of the
- build is deleted or overwritten in another arm. This changes the
- temporary files for suffix rules to always use $* and ensures that the
- non-suffix rules use unique file names.
-
-Version 1.6.0beta02 [December 21, 2011]
- Correct configure builds where build and source directories are separate.
- The include path of 'config.h' was erroneously made relative in pngvalid.c
- in libpng 1.5.7.
-
-Version 1.6.0beta03 [December 22, 2011]
- Start-up code size improvements, error handler flexibility. These changes
- alter how the tricky allocation of the initial png_struct and png_info
- structures are handled. png_info is now handled in pretty much the same
- way as everything else, except that the allocations handle NULL return
- silently. png_struct is changed in a similar way on allocation and on
- deallocation a 'safety' error handler is put in place (which should never
- be required). The error handler itself is changed to permit mismatches
- in the application and libpng error buffer size; however, this means a
- silent change to the API to return the jmp_buf if the size doesn't match
- the size from the libpng compilation; libpng now allocates the memory and
- this may fail. Overall these changes result in slight code size
- reductions; however, this is a reduction in code that is always executed
- so is particularly valuable. Overall on a 64-bit system the libpng DLL
- decreases in code size by 1733 bytes. pngerror.o increases in size by
- about 465 bytes because of the new functionality.
- Added png_convert_to_rfc1123_buffer() and deprecated png_convert_to_rfc1123()
- to avoid including a spurious buffer in the png_struct.
-
-Version 1.6.0beta04 [December 30, 2011]
- Regenerated configure scripts with automake-1.11.2
- Eliminated png_info_destroy(). It is now used only in png.c and only calls
- one other internal function and memset().
- Enabled png_get_sCAL_fixed() if floating point APIs are enabled. Previously
- it was disabled whenever internal fixed point arithmetic was selected,
- which meant it didn't exist even on systems where FP was available but not
- preferred.
- Added pngvalid.c compile time checks for const APIs.
- Implemented 'restrict' for png_info and png_struct. Because of the way
- libpng works both png_info and png_struct are always accessed via a
- single pointer. This means adding C99 'restrict' to the pointer gives
- the compiler some opportunity to optimize the code. This change allows
- that.
- Moved AC_MSG_CHECKING([if libraries can be versioned]) later to the proper
- location in configure.ac (Gilles Espinasse).
- Changed png_memcpy to C assignment where appropriate. Changed all those
- uses of png_memcpy that were doing a simple assignment to assignments
- (all those cases where the thing being copied is a non-array C L-value).
- Added some error checking to png_set_*() routines.
- Removed the reference to the non-exported function png_memcpy() from
- example.c.
- Fixed the Visual C 64-bit build - it requires jmp_buf to be aligned, but
- it had become misaligned.
- Revised contrib/pngminus/pnm2png.c to avoid warnings when png_uint_32
- and unsigned long are of different sizes.
-
-Version 1.6.0beta05 [January 15, 2012]
- Updated manual with description of the simplified API (copied from png.h)
- Fix bug in pngerror.c: some long warnings were being improperly truncated
- (CVE-2011-3464, bug introduced in libpng-1.5.3beta05).
-
-Version 1.6.0beta06 [January 24, 2012]
- Added palette support to the simplified APIs. This commit
- changes some of the macro definitions in png.h, app code
- may need corresponding changes.
- Increased the formatted warning buffer to 192 bytes.
- Added color-map support to simplified API. This is an initial version for
- review; the documentation has not yet been updated.
- Fixed Min/GW uninstall to remove libpng.dll.a
-
-Version 1.6.0beta07 [January 28, 2012]
- Eliminated Intel icc/icl compiler warnings. The Intel (GCC derived)
- compiler issues slightly different warnings from those issued by the
- current vesions of GCC. This eliminates those warnings by
- adding/removing casts and small code rewrites.
- Updated configure.ac from autoupdate: added --enable-werror option.
- Also some layout regularization and removal of introduced tab characters
- (replaced with 3-character indentation). Obsolete macros identified by
- autoupdate have been removed; the replacements are all in 2.59 so
- the pre-req hasn't been changed. --enable-werror checks for support
- for -Werror (or the given argument) in the compiler. This mimics the
- gcc configure option by allowing -Werror to be turned on safely; without
- the option the tests written in configure itself fail compilation because
- they cause compiler warnings.
- Rewrote autogen.sh to run autoreconf instead of running tools one-by-one.
- Conditionalize the install rules for MINGW and CYGWIN in CMakeLists.txt and
- set CMAKE_LIBRARY_OUTPUT_DIRECTORY to "lib" on all platforms (C. Yapp).
- Freeze libtool files in the 'scripts' directory. This version of autogen.sh
- attempts to dissuade people from running it when it is not, or should not,
- be necessary. In fact, autogen.sh does not work when run in a libpng
- directory extracted from a tar distribution anymore. You must run it in
- a GIT clone instead.
- Added two images to contrib/pngsuite (1-bit and 2-bit transparent grayscale),
- and renamed three whose names were inconsistent with those in
- pngsuite/README.txt.
-
-Version 1.6.0beta08 [February 1, 2012]
- Fixed Image::colormap misalignment in pngstest.c
- Check libtool/libtoolize version number (2.4.2) in configure.ac
- Divide test-pngstest.sh into separate pngstest runs for basic and
- transparent images.
- Moved automake options to AM_INIT_AUTOMAKE in configure.ac
- Added color-tests, silent-rules (Not yet implemented in Makefile.am) and
- version checking to configure.ac
- Improved pngstest speed by not doing redundant tests and add const to
- the background parameter of png_image_finish_read. The --background
- option is now done automagically only when required, so that commandline
- option no longer exists.
- Cleaned up pngpriv.h to consistently declare all functions and data.
- Also eliminated PNG_CONST_DATA, which is apparently not needed but we
- can't be sure until it is gone.
- Added symbol prefixing that allows all the libpng external symbols
- to be prefixed (suggested by Reuben Hawkins).
- Updated "ftbb*.png" list in the owatcom and vstudio projects.
- Fixed 'prefix' builds on clean systems. The generation of pngprefix.h
- should not require itself.
- Updated INSTALL to explain that autogen.sh must be run in a GIT clone,
- not in a libpng directory extracted from a tar distribution.
-
-Version 1.6.0beta09 [February 1, 2012]
- Reverted the prebuilt configure files to libpng-1.6.0beta05 condition.
-
-Version 1.6.0beta10 [February 3, 2012]
- Added Z_SOLO for zlib-1.2.6+ and correct pngstest tests
- Updated list of test images in CMakeLists.txt
- Updated the prebuilt configure files to current condition.
- Revised INSTALL information about autogen.sh; it works in tar distributions.
-
-Version 1.6.0beta11 [February 16, 2012]
- Fix character count in pngstest command in projects/owatcom/pngstest.tgt
- Revised test-pngstest.sh to report PASS/FAIL for each image.
- Updated documentation about the simplified API.
- Corrected estimate of error in libpng png_set_rgb_to_gray API. The API is
- extremely inaccurate for sRGB conversions because it uses an 8-bit
- intermediate linear value and it does not use the sRGB transform, so it
- suffers from the known instability in gamma transforms for values close
- to 0 (see Poynton). The net result is that the calculation has a maximum
- error of 14.99/255; 0.5/255^(1/2.2). pngstest now uses 15 for the
- permitted 8-bit error. This may still not be enough because of arithmetic
- error.
- Removed some unused arrays (with #ifdef) from png_read_push_finish_row().
- Fixed a memory overwrite bug in simplified read of RGB PNG with
- non-linear gamma Also bugs in the error checking in pngread.c and changed
- quite a lot of the checks in pngstest.c to be correct; either correctly
- written or not over-optimistic. The pngstest changes are insufficient to
- allow all possible RGB transforms to be passed; pngstest cmppixel needs
- to be rewritten to make it clearer which errors it allows and then changed
- to permit known inaccuracies.
- Removed tests for no-longer-used *_EMPTY_PLTE_SUPPORTED from pngstruct.h
- Fixed fixed/float API export conditionals. 1) If FIXED_POINT or
- FLOATING_POINT options were switched off, png.h ended up with lone ';'
- characters. This is not valid ANSI-C outside a function. The ';'
- characters have been moved inside the definition of PNG_FP_EXPORT and
- PNG_FIXED_EXPORT. 2) If either option was switched off, the declaration
- of the corresponding functions were completely omitted, even though some
- of them are still used internally. The result is still valid, but
- produces warnings from gcc with some warning options (including -Wall). The
- fix is to cause png.h to declare the functions with PNG_INTERNAL_FUNCTION
- when png.h is included from pngpriv.h.
- Check for invalid palette index while reading paletted PNG. When one is
- found, issue a warning and increase png_ptr->num_palette accordingly.
- Apps are responsible for checking to see if that happened.
-
-Version 1.6.0beta12 [February 18, 2012]
- Do not increase num_palette on invalid_index.
- Relocated check for invalid palette index to pngrtran.c, after unpacking
- the sub-8-bit pixels.
- Fixed CVE-2011-3026 buffer overrun bug. This bug was introduced when
- iCCP chunk support was added at libpng-1.0.6. Deal more correctly with the
- test on iCCP chunk length. Also removed spurious casts that may hide
- problems on 16-bit systems.
-
-Version 1.6.0beta13 [February 24, 2012]
- Eliminated redundant png_push_read_tEXt|zTXt|iTXt|unknown code from
- pngpread.c and use the sequential png_handle_tEXt, etc., in pngrutil.c;
- now that png_ptr->buffer is inaccessible to applications, the special
- handling is no longer useful.
- Added PNG_SAFE_LIMITS feature to pnglibconf.dfa, pngpriv.h, and new
- pngusr.dfa to reset the user limits to safe ones if PNG_SAFE_LIMITS is
- defined. To enable, use "CPPFLAGS=-DPNG_SAFE_LIMITS_SUPPORTED=1" on the
- configure command or put #define PNG_SAFE_LIMITS_SUPPORTED in
- pnglibconf.h.prebuilt and pnglibconf.h.
-
-Version 1.6.0beta14 [February 27, 2012]
- Added information about the new limits in the manual.
- Updated Makefile.in
-
-Version 1.6.0beta15 [March 2, 2012]
- Removed unused "current_text" members of png_struct and the png_free()
- of png_ptr->current_text from pngread.c
- Rewrote pngstest.c for substantial speed improvement.
- Fixed transparent pixel and 16-bit rgb tests in pngstest and removed a
- spurious check in pngwrite.c
- Added PNG_IMAGE_FLAG_FAST for the benefit of applications that store
- intermediate files, or intermediate in-memory data, while processing
- image data with the simplified API. The option makes the files larger
- but faster to write and read. pngstest now uses this by default; this
- can be disabled with the --slow option.
- Improved pngstest fine tuning of error numbers, new test file generator.
- The generator generates images that test the full range of sample values,
- allow the error numbers in pngstest to be tuned and checked. makepng
- also allows generation of images with extra chunks, although this is
- still work-in-progress.
- Added check for invalid palette index while reading.
- Fixed some bugs in ICC profile writing. The code should now accept
- all potentially valid ICC profiles and reject obviously invalid ones.
- It now uses png_error() to do so rather than casually writing a PNG
- without the necessary color data.
- Removed whitespace from the end of lines in all source files and scripts.
-
-Version 1.6.0beta16 [March 6, 2012]
- Relocated palette-index checking function from pngrutil.c to pngtrans.c
- Added palette-index checking while writing.
- Changed png_inflate() and calling routines to avoid overflow problems.
- This is an intermediate check-in that solves the immediate problems and
- introduces one performance improvement (avoiding a copy via png_ptr->zbuf.)
- Further changes will be made to make ICC profile handling more secure.
- Fixed build warnings (MSVC, GCC, GCC v3). Cygwin GCC with default options
- declares 'index' as a global, causing a warning if it is used as a local
- variable. GCC 64-bit warns about assigning a (size_t) (unsigned 64-bit)
- to an (int) (signed 32-bit). MSVC, however, warns about using the
- unary '-' operator on an unsigned value (even though it is well defined
- by ANSI-C to be ~x+1). The padding calculation was changed to use a
- different method. Removed the tests on png_ptr->pass.
- Added contrib/libtests/tarith.c to test internal arithmetic functions from
- png.c. This is a libpng maintainer program used to validate changes to the
- internal arithmetic functions.
- Made read 'inflate' handling like write 'deflate' handling. The read
- code now claims and releases png_ptr->zstream, like the write code.
- The bug whereby the progressive reader failed to release the zstream
- is now fixed, all initialization is delayed, and the code checks for
- changed parameters on deflate rather than always calling
- deflatedEnd/deflateInit.
- Validate the zTXt strings in pngvalid.
- Added code to validate the windowBits value passed to deflateInit2().
- If the call to deflateInit2() is wrong a png_warning will be issued
- (in fact this is harmless, but the PNG data produced may be sub-optimal).
-
-Version 1.6.0beta17 [March 10, 2012]
- Fixed PNG_LIBPNG_BUILD_BASE_TYPE definition.
- Reject all iCCP chunks after the first, even if the first one is invalid.
- Deflate/inflate was reworked to move common zlib calls into single
- functions [rw]util.c. A new shared keyword check routine was also added
- and the 'zbuf' is no longer allocated on progressive read. It is now
- possible to call png_inflate() incrementally. A warning is no longer
- issued if the language tag or translated keyword in the iTXt chunk
- has zero length.
- If benign errors are disabled use maximum window on ancilliary inflate.
- This works round a bug introduced in 1.5.4 where compressed ancillary
- chunks could end up with a too-small windowBits value in the deflate
- header.
-
-Version 1.6.0beta18 [March 16, 2012]
- Issue a png_benign_error() instead of png_warning() about bad palette index.
- In pngtest, treat benign errors as errors if "-strict" is present.
- Fixed an off-by-one error in the palette index checking function.
- Fixed a compiler warning under Cygwin (Windows-7, 32-bit system)
- Revised example.c to put text strings in a temporary character array
- instead of directly assigning string constants to png_textp members.
- This avoids compiler warnings when -Wwrite-strings is enabled.
- Added output flushing to aid debugging under Visual Studio. Unfortunately
- this is necessary because the VS2010 output window otherwise simply loses
- the error messages on error (they weren't flushed to the window before
- the process exited, apparently!)
- Added configuration support for benign errors and changed the read
- default. Also changed some warnings in the iCCP and sRGB handling
- from to benign errors. Configuration now makes read benign
- errors warnings and write benign errors to errors by default (thus
- changing the behavior on read). The simplified API always forces
- read benign errors to warnings (regardless of the system default, unless
- this is disabled in which case the simplified API can't be built.)
-
-Version 1.6.0beta19 [March 18, 2012]
- Work around for duplicate row start calls; added warning messages.
- This turns on PNG_FLAG_DETECT_UNINITIALIZED to detect app code that
- fails to call one of the 'start' routines (not enabled in libpng-1.5
- because it is technically an API change, since it did normally work
- before.) It also makes duplicate calls to png_read_start_row (an
- internal function called at the start of the image read) benign, as
- they were before changes to use png_inflate_claim. Somehow webkit is
- causing this to happen; this is probably a mis-feature in the zlib
- changes so this commit is only a work-round.
- Removed erroneous setting of DETECT_UNINITIALIZED and added more
- checks. The code now does a png_error if an attempt is made to do the
- row initialization twice; this is an application error and it has
- serious consequences because the transform data in png_struct is
- changed by each call.
- Added application error reporting and added chunk names to read
- benign errors; also added --strict to pngstest - not enabled
- yet because a warning is produced.
- Avoid the double gamma correction warning in the simplified API.
- This allows the --strict option to pass in the pngstest checks
-
-Version 1.6.0beta20 [March 29, 2012]
- Changed chunk handler warnings into benign errors, incrementally load iCCP
- Added checksum-icc.c to contrib/tools
- Prevent PNG_EXPAND+PNG_SHIFT doing the shift twice.
- Recognize known sRGB ICC profiles while reading; prefer writing the
- iCCP profile over writing the sRGB chunk, controlled by the
- PNG_sRGB_PROFILE_CHECKS option.
- Revised png_set_text_2() to avoid potential memory corruption (fixes
- CVE-2011-3048, also known as CVE-2012-3425).
-
-Version 1.6.0beta21 [April 27, 2012]
- Revised scripts/makefile.darwin: use system zlib; remove quotes around
- architecture list; add missing ppc architecture; add architecture options
- to shared library link; don't try to create a shared lib based on missing
- RELEASE variable.
- Enable png_set_check_for_invalid_index() for both read and write.
- Removed #ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED in pngpriv.h around
- declaration of png_handle_unknown().
- Added -lssp_nonshared in a comment in scripts/makefile.freebsd
- and changed deprecated NOOBJ and NOPROFILE to NO_OBJ and NO_PROFILE.
-
-Version 1.6.0beta22 [May 23, 2012]
- Removed need for -Wno-cast-align with clang. clang correctly warns on
- alignment increasing pointer casts when -Wcast-align is passed. This
- fixes the cases that clang warns about either by eliminating the
- casts from png_bytep to png_uint_16p (pngread.c), or, for pngrutil.c
- where the cast is previously verified or pngstest.c where it is OK, by
- introducing new png_aligncast macros to do the cast in a way that clang
- accepts.
-
-Version 1.6.0beta23 [June 6, 2012]
- Revised CMakeLists.txt to not attempt to make a symlink under mingw.
- Made fixes for new optimization warnings from gcc 4.7.0. The compiler
- performs an optimization which is safe; however it then warns about it.
- Changing the type of 'palette_number' in pngvalid.c removes the warning.
- Do not depend upon a GCC feature macro being available for use in generating
- the linker mapfile symbol prefix.
- Improved performance of new do_check_palette_indexes() function (only
- update the value when it actually increases, move test for whether
- the check is wanted out of the function.
-
-Version 1.6.0beta24 [June 7, 2012]
- Don't check palette indexes if num_palette is 0 (as it can be in MNG files).
-
-Version 1.6.0beta25 [June 16, 2012]
- Revised png_set_keep_unknown_chunks() so num_chunks < 0 means ignore all
- unknown chunks and all known chunks except for IHDR, PLTE, tRNS, IDAT,
- and IEND. Previously it only meant ignore all unknown chunks, the
- same as num_chunks == 0. Revised png_image_skip_unused_chunks() to
- provide a list of chunks to be processed instead of a list of chunks to
- ignore. Revised contrib/gregbook/readpng2.c accordingly.
-
-Version 1.6.0beta26 [July 10, 2012]
- Removed scripts/makefile.cegcc from the *.zip and *.7z distributions; it
- depends on configure, which is not included in those archives.
- Moved scripts/chkfmt to contrib/tools.
- Changed "a+w" to "u+w" in Makefile.in to fix CVE-2012-3386.
-
-Version 1.6.0beta27 [August 11, 2012]
- Do not compile PNG_DEPRECATED, PNG_ALLOC and PNG_PRIVATE when __GNUC__ < 3.
- Do not use __restrict when GNUC is <= 3.1
- Removed references to png_zalloc() and png_zfree() from the manual.
- Fixed configurations where floating point is completely disabled. Because
- of the changes to support symbol prefixing PNG_INTERNAL_FUNCTION declares
- floating point APIs during libpng builds even if they are completely
- disabled. This requires the png floating point types (png_double*) to be
- declared even though the functions are never actually defined. This
- change provides a dummy definition so that the declarations work, yet any
- implementation will fail to compile because of an incomplete type.
- Re-eliminated the use of strcpy() in pngtest.c. An unncessary use of
- strcpy() was accidentally re-introduced in libpng16; this change replaces
- it with strncpy().
- Eliminated use of png_sizeof(); use sizeof() instead.
- Use a consistent style for (sizeof type) and (sizeof (array))
- Cleanup of png_set_filler(). This function does very different things on
- read and write. In libpng 1.6 the two cases can be distinguished and
- considerable code cleanup, and extra error checking, is possible. This
- makes calls on the write side that have no effect be ignored with a
- png_app_error(), which can be disabled in the app using
- png_set_benign_errors(), and removes the spurious use of usr_channels
- on the read side.
- Insist on autotools 1.12.1 for git builds because there are security issues
- with 1.12 and insisting on anything less would allow 1.12 to be used.
- Removed info_ptr->signature[8] from WRITE-only builds.
- Add some conditions for compiling png_fixed(). This is a small function
- but it requires "-lm" on some platforms.
- Cause pngtest --strict to fail on any warning from libpng (not just errors)
- and cause it not to fail at the comparison step if libpng lacks support
- for writing chunks that it reads from the input (currently only implemented
- for compressed text chunks).
- Make all three "make check" test programs work without READ or WRITE support.
- Now "make check" will succeed even if libpng is compiled with -DPNG_NO_READ
- or -DPNG_NO_WRITE. The tests performed are reduced, but the basic reading
- and writing of a PNG file is always tested by one or more of the tests.
- Consistently use strlen(), memset(), memcpy(), and memcmp() instead of the
- png_strlen(), png_memset(), png_memcpy(), and png_memcmp() macros.
- Removed the png_sizeof(), png_strlen(), png_memset(), png_memcpy(), and
- png_memcmp() macros.
- Work around gcc 3.x and Microsoft Visual Studio 2010 complaints. Both object
- to the split initialization of num_chunks.
-
-Version 1.6.0beta28 [August 29, 2012]
- Unknown handling fixes and clean up. This adds more correct option
- control of the unknown handling, corrects the pre-existing bug where
- the per-chunk 'keep' setting is ignored and makes it possible to skip
- IDAT chunks in the sequential reader (broken in earlier 1.6 versions).
- There is a new test program, test-unknown.c, which is a work in progress
- (not currently part of the test suite). Comments in the header files now
- explain how the unknown handling works.
- Allow fine grain control of unknown chunk APIs. This change allows
- png_set_keep_unknown_chunks() to be turned off if not required and causes
- both read and write to behave appropriately (on read this is only possible
- if the user callback is used to handle unknown chunks). The change
- also removes the support for storing unknown chunks in the info_struct
- if the only unknown handling enabled is via the callback, allowing libpng
- to be configured with callback reading and none of the unnecessary code.
- Corrected fix for unknown handling in pngtest. This reinstates the
- libpng handling of unknown chunks other than vpAg and sTER (including
- unsafe-to-copy chunks which were dropped before) and eliminates the
- repositioning of vpAg and sTER in pngtest.png by changing pngtest.png
- (so the chunks are where libpng would put them).
- Added "tunknown" test and corrected a logic error in png_handle_unknown()
- when SAVE support is absent. Moved the shell test scripts for
- contrib/libtests from the libpng top directory to contrib/libtests.
- png_handle_unknown() must always read or skip the chunk, if
- SAVE_UNKNOWN_CHUNKS is turned off *and* the application does not set
- a user callback an unknown chunk will not be read, leading to a read
- error, which was revealed by the "tunknown" test.
- Cleaned up and corrected ICC profile handling.
- contrib/libtests/makepng: corrected 'rgb' and 'gray' cases. profile_error
- messages could be truncated; made a correct buffer size calculation and
- adjusted pngerror.c appropriately. png_icc_check_* checking improved;
- changed the functions to receive the correct color type of the PNG on read
- or write and check that it matches the color space of the profile (despite
- what the comments said before, there is danger in assuming the app will
- cope correctly with an RGB profile on a grayscale image and, since it
- violates the PNG spec, allowing it is certain to produce inconsistent
- app behavior and might even cause app crashes.) Check that profiles
- contain the tags needed to process the PNG (tags all required by the ICC
- spec). Removed unused PNG_STATIC from pngpriv.h.
-
-Version 1.6.0beta29 [September 4, 2012]
- Fixed the simplified API example programs to add the *colormap parameter
- to several of he API and improved the error message if the version field
- is not set.
- Added contrib/examples/* to the *.zip and *.7z distributions.
- Updated simplified API synopses and description of the png_image structure
- in the manual.
- Made makepng and pngtest produce identical PNGs, add "--relaxed" option
- to pngtest. The "--relaxed" option turns off the benign errors that are
- enabled by default in pre-RC builds. makepng can now write ICC profiles
- where the length has not been extended to a multiple of 4, and pngtest
- now intercepts all libpng errors, allowing the previously-introduced
- "--strict test" on no warnings to actually work.
- Improved ICC profile handling including cHRM chunk generation and fixed
- Cygwin+MSVC build errors. The ICC profile handling now includes more
- checking. Several errors that caused rejection of the profile are now
- handled with a warning in such a way that the invalid profiles will be
- read by default in release (but not pre-RC) builds but will not be
- written by default. The easy part of handling the cHRM chunk is written,
- where the ICC profile contains the required data. The more difficult
- part plus guessing a gAMA value requires code to pass selected RGB values
- through the profile.
-
-Version 1.6.0beta30 [October 24, 2012]
- Changed ICC profile matrix/vector types to not depend on array type rules.
- By the ANSI-C standard the new types should be identical to the previous
- versions, and all known versions of gcc tested with the previous versions
- except for GCC-4.2.1 work with this version. The change makes the ANSI-C
- rule that const applied to an array of elements applies instead to the
- elements in the array moot by explicitly applying const to the base
- elements of the png_icc_matrix and png_icc_vector types. The accidental
- (harmless) 'const' previously applied to the parameters of two of the
- functions have also been removed.
- Added a work around for GCC 4.2 optimization bug.
- Marked the broken (bad white point) original HP sRGB profiles correctly and
- correct comments.
- Added -DZ_SOLO to contrib/pngminim/*/makefile to work with zlib-1.2.7
- Use /MDd for vstudio debug builds. Also added pngunkown to the vstudio
- builds, fixed build errors and corrected a minor exit code error in
- pngvalid if the 'touch' file name is invalid.
- Add updated WARNING file to projects/vstudio from libpng 1.5/vstudio
- Fixed build when using #define PNG_NO_READ_GAMMA in png_do_compose() in
- pngrtran.c (Domani Hannes).
-
-Version 1.6.0beta31 [November 1, 2012]
- Undid the erroneous change to vstudio/pngvalid build in libpng-1.6.0beta30.
- Made pngvalid so that it will build outside the libpng source tree.
- Made builds -DPNG_NO_READ_GAMMA compile (the unit tests still fail).
- Made PNG_NO_READ_GAMMA switch off interfaces that depend on READ_GAMMA.
- Prior to 1.6.0 switching off READ_GAMMA did unpredictable things to the
- interfaces that use it (specifically, png_do_background in 1.4 would
- simply display composite for grayscale images but do composition
- with the incorrect arithmetic for color ones). In 1.6 the semantic
- of -DPNG_NO_READ_GAMMA is changed to simply disable any interface that
- depends on it; this obliges people who set it to consider whether they
- really want it off if they happen to use any of the interfaces in
- question (typically most users who disable it won't).
- Fixed GUIDs in projects/vstudio. Some were duplicated or missing,
- resulting in VS2010 having to update the files.
- Removed non-working ICC profile support code that was mostly added to
- libpng-1.6.0beta29 and beta30. There was too much code for too little
- gain; implementing full ICC color correction may be desireable but is left
- up to applications.
-
-Version 1.6.0beta32 [November 25, 2012]
- Fixed an intermittent SEGV in pngstest due to an uninitialized array element.
- Added the ability for contrib/libtests/makepng.c to make a PNG with just one
- color. This is useful for debugging pngstest color inaccuracy reports.
- Fixed error checking in the simplified write API (Olaf van der Spek)
- Made png_user_version_check() ok to use with libpng version 1.10.x and later.
-
-Version 1.6.0beta33 [December 15, 2012]
- Fixed typo in png.c (PNG_SET_CHUNK_MALLOC_MAX should be PNG_CHUNK_MALLOC_MAX)
- that causes the MALLOC_MAX limit not to work (John Bowler)
- Change png_warning() to png_app_error() in pngwrite.c and comment the
- fall-through condition.
- Change png_warning() to png_app_warning() in png_write_tRNS().
- Rearranged the ARM-NEON optimizations: Isolated the machine specific code
- to the hardware subdirectory and added comments to pngrutil.c so that
- implementors of other optimizations know what to do.
- Fixed cases of unquoted DESTDIR in Makefile.am
- Rebuilt Makefile.in, etc., with autoconf-2.69 and automake-1.12.5.
-
-Version 1.6.0beta34 [December 19, 2012]
- Cleaned up whitespace in the synopsis portion of the manpage "libpng.3"
- Disassembled the version number in scripts/options.awk (necessary for
- building on SunOs).
-
-Version 1.6.0beta35 [December 23, 2012]
- Made default Zlib compression settings be configurable. This adds #defines to
- pnglibconf.h to control the defaults.
- Fixed Windows build issues, enabled ARM compilation. Various warnings issued
- by earlier versions of GCC fixed for Cygwin and Min/GW (which both use old
- GCCs.) ARM support is enabled by default in zlib.props (unsupported by
- Microsoft) and ARM compilation is made possible by deleting the check for
- x86. The test programs cannot be run because they are not signed.
-
-Version 1.6.0beta36 [January 2, 2013]
- Discontinued distributing libpng-1.x.x.tar.bz2.
- Discontinued distributing libpng-1.7.0-1.6.0-diff.txt and similar.
- Rebuilt configure with autoconf-2.69 (inadvertently not done in beta33)
- Fixed 'make distcheck' on SUN OS - libpng.so was not being removed
-
-Version 1.6.0beta37 [January 10, 2013]
- Fixed conceivable but difficult to repro overflow. Also added two test
- programs to generate and test a PNG which should have the problem.
-
-Version 1.6.0beta39 [January 19, 2013]
- Again corrected attempt at overflow detection in png_set_unknown_chunks().
- Added overflow detection in png_set_sPLT() and png_set_text_2().
-
-Version 1.6.0beta40 [January 20, 2013]
- Use consistent handling of overflows in text, sPLT and unknown png_set_* APIs
-
-Version 1.6.0rc01 [January 26, 2013]
- No changes.
-
-Version 1.6.0rc02 [February 4, 2013]
- Added png_get_palette_max() function.
-
-Version 1.6.0rc03 [February 5, 2013]
- Fixed the png_get_palette_max API.
-
-Version 1.6.0rc04 [February 7, 2013]
- Turn serial tests back on (recently turned off by autotools upgrade).
-
-Version 1.6.0rc05 [February 8, 2013]
- Update manual about png_get_palette_max().
-
-Version 1.6.0rc06 [February 9, 2013]
- Fixed missing dependency in --prefix builds The intermediate
- internal 'prefix.h' file can only be generated correctly after
- pnglibconf.h, however the dependency was not in Makefile.am. The
- symptoms are unpredictable depending on the order make chooses to
- build pngprefix.h and pnglibconf.h, often the error goes unnoticed
- because there is a system pnglibconf.h to use instead.
-
-Version 1.6.0rc07 [February 10, 2013]
- Enclosed the new png_get_palette_max in #ifdef PNG_GET_PALETTE_MAX_SUPPORTED
- block, and revised pnglibconf.h and pnglibconf.h.prebuilt accordingly.
-
-Version 1.6.0rc08 [February 10, 2013]
- Fix typo in png.h #ifdef
-
-Version 1.6.0 [February 14, 2013]
- No changes.
-
-Version 1.6.1beta01 [February 16, 2013]
- Made symbol prefixing work with the ARM neon optimizations. Also allow
- pngpriv.h to be included for preprocessor definitions only, so it can
- be used in non-C/C++ files. Back ported from libpng 1.7.
- Made sRGB check numbers consistent.
- Ported libpng 1.5 options.awk/dfn file handling to 1.6, fixed one bug.
- Removed cc -E workround, corrected png_get_palette_max API Tested on
- SUN OS cc 5.9, which demonstrates the tokenization problem previously
- avoided by using /lib/cpp. Since all .dfn output is now protected in
- double quotes unless it is to be macro substituted the fix should
- work everywhere.
- Enabled parallel tests - back ported from libpng-1.7.
- scripts/pnglibconf.dfa formatting improvements back ported from libpng17.
- Fixed a race condition in the creation of the build 'scripts' directory
- while building with a parallel make.
- Use approved/supported Android method to check for NEON, use Linux/POSIX
- 1003.1 API to check /proc/self/auxv avoiding buffer allocation and other
- library calls (ported from libpng15).
-
-Version 1.6.1beta02 [February 19, 2013]
- Use parentheses more consistently in "#if defined(MACRO)" tests.
- Folded long lines.
- Reenabled code to allow zero length PLTE chunks for MNG.
-
-Version 1.6.1beta03 [February 22, 2013]
- Fixed ALIGNED_MEMORY support.
- Allow run-time ARM NEON checking to be disabled. A new configure option:
- --enable-arm-neon=always will stop the run-time checks. New checks
- within arm/arm_init.c will cause the code not to be compiled unless
- __ARM_NEON__ is set. This should make it fail safe (if someone asks
- for it on then the build will fail if it can't be done.)
- Updated the INSTALL document.
-
-Version 1.6.1beta04 [February 27, 2013]
- Revised INSTALL to recommend using CPPFLAGS instead of INCLUDES.
- Revised scripts/makefile.freebsd to respect ZLIBLIB and ZLIBINC.
- Revised scripts/dfn.awk to work with the buggy MSYS awk that has trouble
- with CRLF line endings.
-
-Version 1.6.1beta05 [March 1, 2013]
- Avoid a possible memory leak in contrib/gregbook/readpng.c
-
-Version 1.6.1beta06 [March 4, 2013]
- Better documentation of unknown handling API interactions.
- Corrected Android builds and corrected libpng.vers with symbol
- prefixing This adds an API to set optimization options externally,
- providing an alternative and general solution for the non-portable
- run-time tests used by the ARM Neon code. It also makes those tests
- compile and link on Android.
- The order of settings vs options in pnglibconf.h is reversed to allow
- settings to depend on options and options can now set (or override) the
- defaults for settings.
-
-Version 1.6.1beta07 [March 7, 2013]
- Corrected simplified API default gamma for color-mapped output, added
- a flag to change default. In 1.6.0 when the simplified API was used
- to produce color-mapped output from an input image with no gamma
- information the gamma assumed for the input could be different from
- that assumed for non-color-mapped output. In particular 16-bit depth
- input files were assumed to be sRGB encoded, whereas in the 'direct'
- case they were assumed to have linear data. This was an error. The
- fix makes the simplified API treat all input files the same way and
- adds a new flag to the png_image::flags member to allow the
- application/user to specify that 16-bit files contain sRGB data
- rather than the default linear.
- Fixed bugs in the pngpixel and makepng test programs.
-
-Version 1.6.1beta08 [March 7, 2013]
- Fixed CMakelists.txt to allow building a single variant of the library
- (Claudio Bley):
- Introduced a PNG_LIB_TARGETS variable that lists all activated library
- targets. It is an error if this variable ends up empty, ie. you have
- to build at least one library variant.
- Made the *_COPY targets only depend on library targets actually being build.
- Use PNG_LIB_TARGETS to unify a code path.
- Changed the CREATE_SYMLINK macro to expect the full path to a file as the
- first argument. When symlinking the filename component of that path is
- determined and used as the link target.
- Use copy_if_different in the CREATE_SYMLINK macro.
-
-Version 1.6.1beta09 [March 13, 2013]
- Eliminated two warnings from the Intel C compiler. The warnings are
- technically valid, although a reasonable treatment of division would
- show it to be incorrect.
-
-Version 1.6.1rc01 [March 21, 2013]
- No changes.
-
-Version 1.6.1 [March 28, 2013]
- No changes.
-
-Version 1.6.2beta01 [April 14, 2013]
- Updated documentation of 1.5.x to 1.6.x changes in iCCP chunk handling.
- Fixed incorrect warning of excess deflate data. End condition - the
- warning would be produced if the end of the deflate stream wasn't read
- in the last row. The warning is harmless.
- Corrected the test on user transform changes on read. It was in the
- png_set of the transform function, but that doesn't matter unless the
- transform function changes the rowbuf size, and that is only valid if
- transform_info is called.
- Corrected a misplaced closing bracket in contrib/libtests/pngvalid.c
- (Flavio Medeiros).
- Corrected length written to uncompressed iTXt chunks (Samuli Suominen).
- Bug was introduced in libpng-1.6.0.
-
-Version 1.6.2rc01 [April 18, 2013]
- Added contrib/tools/fixitxt.c, to repair the erroneous iTXt chunk length
- written by libpng-1.6.0 and 1.6.1.
- Disallow storing sRGB information when the sRGB is not supported.
-
-Version 1.6.2rc02 [April 18, 2013]
- Merge pngtest.c with libpng-1.7.0
-
-Version 1.6.2rc03 [April 22, 2013]
- Trivial spelling cleanup.
-
-Version 1.6.2rc04 and 1.6.2rc05 [omitted]
-
-Version 1.6.2rc06 [April 24, 2013]
- Reverted to version 1.6.2rc03. Recent changes to arm/neon support
- have been ported to libpng-1.7.0beta09 and will reappear in version
- 1.6.3beta01.
-
-Version 1.6.2 [April 25, 2013]
- No changes.
-
-Version 1.6.3beta01 [April 25, 2013]
- Revised stack marking in arm/filter_neon.S and configure.ac.
- Ensure that NEON filter stuff is completely disabled when switched 'off'.
- Previously the ARM NEON specific files were still built if the option
- was switched 'off' as opposed to being explicitly disabled.
-
-Version 1.6.3beta02 [April 26, 2013]
- Test for 'arm*' not just 'arm' in the host_cpu configure variable.
- Rebuilt the configure scripts.
-
-Version 1.6.3beta03 [April 30, 2013]
- Expanded manual paragraph about writing private chunks, particularly
- the need to call png_set_keep_unknown_chunks() when writing them.
- Avoid dereferencing NULL pointer possibly returned from
- png_create_write_struct() (Andrew Church).
-
-Version 1.6.3beta05 [May 9, 2013]
- Calculate our own zlib windowBits when decoding rather than trusting the
- CMF bytes in the PNG datastream.
- Added an option to force maximum window size for inflating, which was
- the behavior of libpng15 and earlier.
- Added png-fix-itxt and png-fix-too-far-back to the built programs and
- removed warnings from the source code and timepng that are revealed as
- a result.
- Detect wrong libpng versions linked to png-fix-too-far-back, which currently
- only works with libpng versions that can be made to reliably fail when
- the deflate data contains an out-of-window reference. This means only
- 1.6 and later.
- Fixed gnu issues: g++ needs a static_cast, gcc 4.4.7 has a broken warning
- message which it is easier to work round than ignore.
- Updated contrib/pngminus/pnm2png.c (Paul Stewart):
- Check for EOF
- Ignore "#" delimited comments in input file to pnm2png.c.
- Fixed whitespace handling
- Added a call to png_set_packing()
- Initialize dimension values so if sscanf fails at least we have known
- invalid values.
- Attempt to detect configuration issues with png-fix-too-far-back, which
- requires both the correct libpng and the correct zlib to function
- correctly.
- Check ZLIB_VERNUM for mismatches, enclose #error in quotes
- Added information in the documentation about problems with and fixes for
- the bad CRC and bad iTXt chunk situations.
-
-Version 1.6.3beta06 [May 12, 2013]
- Allow contrib/pngminus/pnm2png.c to compile without WRITE_INVERT and
- WRITE_PACK supported (writes error message that it can't read P1 or
- P4 PBM files).
- Improved png-fix-too-far-back usage message, added --suffix option.
- Revised contrib/pngminim/*/makefile to generate pnglibconf.h with the
- right zlib header files.
- Separated CPPFLAGS and CFLAGS in contrib/pngminim/*/makefile
-
-Version 1.6.3beta07 [June 8, 2013]
- Removed a redundant test in png_set_IHDR().
- Added set(CMAKE_CONFIGURATION_TYPES ...) to CMakeLists.txt (Andrew Hundt)
- Deleted set(CMAKE_BUILD_TYPE) block from CMakeLists.txt
- Enclose the prototypes for the simplified write API in
- #ifdef PNG_STDIO_SUPPORTED/#endif
- Make ARM NEON support work at compile time (not just configure time).
- This moves the test on __ARM_NEON__ into pngconf.h to avoid issues when
- using a compiler that compiles for multiple architectures at one time.
- Removed PNG_FILTER_OPTIMIZATIONS and PNG_ARM_NEON_SUPPORTED from
- pnglibconf.h, allowing more of the decisions to be made internally
- (pngpriv.h) during the compile. Without this, symbol prefixing is broken
- under certain circumstances on ARM platforms. Now only the API parts of
- the optimizations ('check' vs 'api') are exposed in the public header files
- except that the new setting PNG_ARM_NEON_OPT documents how libpng makes the
- decision about whether or not to use the optimizations.
- Protect symbol prefixing against CC/CPPFLAGS/CFLAGS useage.
- Previous iOS/Xcode fixes for the ARM NEON optimizations moved the test
- on __ARM_NEON__ from configure time to compile time. This breaks symbol
- prefixing because the definition of the special png_init_filter_functions
- call was hidden at configure time if the relevant compiler arguments are
- passed in CFLAGS as opposed to CC. This change attempts to avoid all
- the confusion that would result by declaring the init function even when
- it is not used, so that it will always get prefixed.
-
-Version 1.6.3beta08 [June 18, 2013]
- Revised libpng.3 so that "doclifter" can process it.
-
-Version 1.6.3beta09 [June 27, 2013]
- Revised example.c to illustrate use of PNG_DEFAULT_sRGB and PNG_GAMMA_MAC_18
- as parameters for png_set_gamma(). These have been available since
- libpng-1.5.4.
- Renamed contrib/tools/png-fix-too-far-back.c to pngfix.c and revised it
- to check all compressed chunks known to libpng.
-
-Version 1.6.3beta10 [July 5, 2013]
- Updated documentation to show default behavior of benign errors correctly.
- Only compile ARM code when PNG_READ_SUPPORTED is defined.
- Fixed undefined behavior in contrib/tools/pngfix.c and added new strip
- option. pngfix relied on undefined behavior and even a simple change from
- gcc to g++ caused it to fail. The new strip option 'unsafe' has been
- implemented and is the default if --max is given. Option names have
- been clarified, with --strip=transform now stripping the bKGD chunk,
- which was stripped previously with --strip=unused.
- Added all documented chunk types to pngpriv.h
- Unified pngfix.c source with libpng17.
-
-Version 1.6.3rc01 [July 11, 2013]
- No changes.
-
-Version 1.6.3 [July 18, 2013]
- Revised manual about changes in iTXt chunk handling made in libpng-1.6.0.
- Added "/* SAFE */" comments in pngrutil.c and pngrtran.c where warnings
- may be erroneously issued by code-checking applications.
-
-Send comments/corrections/commendations to png-mng-implement at lists.sf.net
-(subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe)
-or to glennrp at users.sourceforge.net
-
-Glenn R-P
-#endif
+++ /dev/null
-# CMakeLists.txt
-
-# Copyright (C) 2007-2013 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-cmake_minimum_required(VERSION 2.4.4)
-set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS true)
-
-set(CMAKE_CONFIGURATION_TYPES "Release;Debug;MinSizeRel;RelWithDebInfo")
-
-project(libpng C)
-enable_testing()
-
-set(PNGLIB_MAJOR 1)
-set(PNGLIB_MINOR 6)
-set(PNGLIB_RELEASE 3)
-set(PNGLIB_NAME libpng${PNGLIB_MAJOR}${PNGLIB_MINOR})
-set(PNGLIB_VERSION ${PNGLIB_MAJOR}.${PNGLIB_MINOR}.${PNGLIB_RELEASE})
-
-# needed packages
-find_package(ZLIB REQUIRED)
-include_directories(${ZLIB_INCLUDE_DIR})
-
-if(NOT WIN32)
- find_library(M_LIBRARY
- NAMES m
- PATHS /usr/lib /usr/local/lib
- )
- if(NOT M_LIBRARY)
- message(STATUS
- "math library 'libm' not found - floating point support disabled")
- endif()
-else()
- # not needed on windows
- set(M_LIBRARY "")
-endif()
-
-# COMMAND LINE OPTIONS
-if(DEFINED PNG_SHARED)
- option(PNG_SHARED "Build shared lib" ${PNG_SHARED})
-else()
- option(PNG_SHARED "Build shared lib" ON)
-endif()
-if(DEFINED PNG_STATIC)
- option(PNG_STATIC "Build static lib" ${PNG_STATIC})
-else()
- option(PNG_STATIC "Build static lib" ON)
-endif()
-
-option(PNG_TESTS "Build libpng tests" YES)
-
-# Many more configuration options could be added here
-option(PNG_DEBUG "Build with debug output" NO)
-option(PNGARG "Disable ANSI-C prototypes" NO)
-
-# SET LIBNAME
-set(PNG_LIB_NAME png${PNGLIB_MAJOR}${PNGLIB_MINOR})
-
-# to distinguish between debug and release lib
-set(CMAKE_DEBUG_POSTFIX "d")
-
-# Use the prebuilt pnglibconf.h file from the scripts folder
-# TODO: fix this by building with awk; without this no cmake build can be
-# configured directly (to do so indirectly use your local awk to build a
-# pnglibconf.h in the build directory.)
-configure_file(${CMAKE_CURRENT_SOURCE_DIR}/scripts/pnglibconf.h.prebuilt
- ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h)
-include_directories(${CMAKE_CURRENT_BINARY_DIR})
-
-# OUR SOURCES
-set(libpng_public_hdrs
- png.h
- pngconf.h
- ${CMAKE_CURRENT_BINARY_DIR}/pnglibconf.h
-)
-set(libpng_sources
- ${libpng_public_hdrs}
- pngdebug.h
- pnginfo.h
- pngpriv.h
- pngstruct.h
- png.c
- pngerror.c
- pngget.c
- pngmem.c
- pngpread.c
- pngread.c
- pngrio.c
- pngrtran.c
- pngrutil.c
- pngset.c
- pngtrans.c
- pngwio.c
- pngwrite.c
- pngwtran.c
- pngwutil.c
-)
-set(pngtest_sources
- pngtest.c
-)
-set(pngvalid_sources
- contrib/libtests/pngvalid.c
-)
-set(pngstest_sources
- contrib/libtests/pngstest.c
-)
-# SOME NEEDED DEFINITIONS
-
-if(MSVC)
- add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
-endif(MSVC)
-
-if(PNG_DEBUG)
- add_definitions(-DPNG_DEBUG)
-endif()
-
-# NOW BUILD OUR TARGET
-include_directories(${CMAKE_CURRENT_SOURCE_DIR} ${ZLIB_INCLUDE_DIR})
-
-unset(PNG_LIB_TARGETS)
-
-if(PNG_SHARED)
- add_library(${PNG_LIB_NAME} SHARED ${libpng_sources})
- set(PNG_LIB_TARGETS ${PNG_LIB_NAME})
- if(MSVC)
- # msvc does not append 'lib' - do it here to have consistent name
- set_target_properties(${PNG_LIB_NAME} PROPERTIES PREFIX "lib")
- set_target_properties(${PNG_LIB_NAME} PROPERTIES IMPORT_PREFIX "lib")
- endif()
- target_link_libraries(${PNG_LIB_NAME} ${ZLIB_LIBRARY} ${M_LIBRARY})
-endif()
-
-if(PNG_STATIC)
-# does not work without changing name
- set(PNG_LIB_NAME_STATIC ${PNG_LIB_NAME}_static)
- add_library(${PNG_LIB_NAME_STATIC} STATIC ${libpng_sources})
- list(APPEND PNG_LIB_TARGETS ${PNG_LIB_NAME_STATIC})
- if(MSVC)
- # msvc does not append 'lib' - do it here to have consistent name
- set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES PREFIX "lib")
- endif()
- target_link_libraries(${PNG_LIB_NAME_STATIC} ${ZLIB_LIBRARY} ${M_LIBRARY})
-endif()
-
-if(NOT PNG_LIB_TARGETS)
- message(SEND_ERROR
- "No library variant selected to build. "
- "Please enable at least one of the following options: PNG_STATIC, PNG_SHARED")
-endif()
-
-if(PNG_SHARED AND WIN32)
- set_target_properties(${PNG_LIB_NAME} PROPERTIES DEFINE_SYMBOL PNG_BUILD_DLL)
-endif()
-
-if(PNG_TESTS AND PNG_SHARED)
- # does not work with msvc due to png_lib_ver issue
- add_executable(pngtest ${pngtest_sources})
- target_link_libraries(pngtest ${PNG_LIB_NAME})
- add_test(pngtest ./pngtest ${CMAKE_CURRENT_SOURCE_DIR}/pngtest.png)
- #
- add_executable(pngvalid ${pngvalid_sources})
- target_link_libraries(pngvalid ${PNG_LIB_NAME})
- add_test(pngvalid ./pngvalid)
- add_executable(pngstest ${pngstest_sources})
- target_link_libraries(pngstest ${PNG_LIB_NAME})
- add_test(pngstest ./pngstest
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g01.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g02.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g04.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn0g16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn2c08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn2c16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p01.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p02.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p04.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn3p08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn4a08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn4a16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn6a08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/basn6a16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn0g01.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn0g02.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn0g04.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn2c16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbbn3p08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbgn2c16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbgn3p08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbrn2c08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbwn0g16.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbwn3p08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftbyn3p08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp0n0g08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp0n2c08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp0n3p08.png
- ${CMAKE_CURRENT_SOURCE_DIR}/contrib/pngsuite/ftp1n3p08.png
- )
-endif()
-
-# Ensure the CMAKE_LIBRARY_OUTPUT_DIRECTORY is set
-IF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
- SET(CMAKE_LIBRARY_OUTPUT_DIRECTORY "lib")
-ENDIF(NOT CMAKE_LIBRARY_OUTPUT_DIRECTORY)
-
-# Set a variable with CMake code which:
-# Creates a symlink from src to dest (if possible) or alternatively
-# copies if different.
-macro(CREATE_SYMLINK SRC_FILE DEST_FILE)
- FILE(REMOVE ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
- if(WIN32 AND NOT CYGWIN AND NOT MSYS)
- ADD_CUSTOM_COMMAND(
- OUTPUT ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
- COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE}
- COMMAND ${CMAKE_COMMAND} -E copy_if_different "${SRC_FILE}" ${CMAKE_CURRENT_BINARY_DIR}/${DEST_FILE}
- DEPENDS ${PNG_LIB_TARGETS}
- )
- ADD_CUSTOM_TARGET(${DEST_FILE}_COPY ALL DEPENDS ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE})
- else(WIN32 AND NOT CYGWIN AND NOT MSYS)
- get_filename_component(LINK_TARGET "${SRC_FILE}" NAME)
- execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${CMAKE_LIBRARY_OUTPUT_DIRECTORY}/${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
- execute_process(COMMAND ${CMAKE_COMMAND} -E create_symlink "${LINK_TARGET}" ${DEST_FILE} WORKING_DIRECTORY ${CMAKE_CURRENT_BINARY_DIR})
- endif(WIN32 AND NOT CYGWIN AND NOT MSYS)
-endmacro()
-
-# libpng is a library so default to 'lib'
-if(NOT DEFINED CMAKE_INSTALL_LIBDIR)
- set(CMAKE_INSTALL_LIBDIR lib)
-endif(NOT DEFINED CMAKE_INSTALL_LIBDIR)
-
-# CREATE PKGCONFIG FILES
-# we use the same files like ./configure, so we have to set its vars
-# Only do this on Windows for Cygwin - the files don't make much sense outside
-# a UNIX look alike
-if(NOT WIN32 OR CYGWIN OR MINGW)
- set(prefix ${CMAKE_INSTALL_PREFIX})
- set(exec_prefix ${CMAKE_INSTALL_PREFIX})
- set(libdir ${CMAKE_INSTALL_PREFIX}/${CMAKE_INSTALL_LIBDIR})
- set(includedir ${CMAKE_INSTALL_PREFIX}/include)
- set(LIBS "-lz -lm")
- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng.pc.in
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc @ONLY)
- CREATE_SYMLINK(${PNGLIB_NAME}.pc libpng.pc)
-
- configure_file(${CMAKE_CURRENT_SOURCE_DIR}/libpng-config.in
- ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config @ONLY)
- CREATE_SYMLINK(${PNGLIB_NAME}-config libpng-config)
-endif(NOT WIN32 OR CYGWIN OR MINGW)
-
-# SET UP LINKS
-if(PNG_SHARED)
- set_target_properties(${PNG_LIB_NAME} PROPERTIES
-# VERSION 16.${PNGLIB_RELEASE}.1.6.3
- VERSION 16.${PNGLIB_RELEASE}.0
- SOVERSION 16
- CLEAN_DIRECT_OUTPUT 1)
-endif()
-if(PNG_STATIC)
- # MSVC doesn't use a different file extension for shared vs. static
- # libs. We are able to change OUTPUT_NAME to remove the _static
- # for all other platforms.
- if(NOT MSVC)
- set_target_properties(${PNG_LIB_NAME_STATIC} PROPERTIES
- OUTPUT_NAME ${PNG_LIB_NAME}
- CLEAN_DIRECT_OUTPUT 1)
- endif()
-endif()
-
-# If CMake > 2.4.x, we set a variable used below to export
-# targets to an export file.
-# TODO: Use VERSION_GREATER after our cmake_minimum_required >= 2.6.2
-if(CMAKE_MAJOR_VERSION GREATER 1 AND CMAKE_MINOR_VERSION GREATER 4)
- set(PNG_EXPORT_RULE EXPORT libpng)
-elseif(CMAKE_MAJOR_VERSION GREATER 2) # future proof
- set(PNG_EXPORT_RULE EXPORT libpng)
-endif()
-
-# INSTALL
-if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
- install(TARGETS ${PNG_LIB_TARGETS}
- ${PNG_EXPORT_RULE}
- RUNTIME DESTINATION bin
- LIBRARY DESTINATION ${CMAKE_INSTALL_LIBDIR}
- ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
-
- if(PNG_SHARED)
- # Create a symlink for libpng.dll.a => libpng16.dll.a on Cygwin
- if(CYGWIN OR MINGW)
- get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE})
- CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_IMPORT_LIBRARY_SUFFIX})
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_IMPORT_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- endif(CYGWIN OR MINGW)
-
- if(NOT WIN32)
- get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME} LOCATION_${CMAKE_BUILD_TYPE})
- CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_SHARED_LIBRARY_SUFFIX})
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_SHARED_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- endif(NOT WIN32)
- endif(PNG_SHARED)
-
- if(PNG_STATIC)
- if(NOT WIN32 OR CYGWIN OR MINGW)
- get_target_property(BUILD_TARGET_LOCATION ${PNG_LIB_NAME_STATIC} LOCATION_${CMAKE_BUILD_TYPE})
- CREATE_SYMLINK(${BUILD_TARGET_LOCATION} libpng${CMAKE_STATIC_LIBRARY_SUFFIX})
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng${CMAKE_STATIC_LIBRARY_SUFFIX}
- DESTINATION ${CMAKE_INSTALL_LIBDIR})
- endif(NOT WIN32 OR CYGWIN OR MINGW)
- endif()
-endif()
-
-if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
- install(FILES ${libpng_public_hdrs} DESTINATION include)
- install(FILES ${libpng_public_hdrs} DESTINATION include/${PNGLIB_NAME})
-endif()
-if(NOT SKIP_INSTALL_EXECUTABLES AND NOT SKIP_INSTALL_ALL )
- if(NOT WIN32 OR CYGWIN OR MINGW)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config DESTINATION bin)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
- DESTINATION bin)
- endif(NOT WIN32 OR CYGWIN OR MINGW)
-endif()
-
-if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
- # Install man pages
- if(NOT PNG_MAN_DIR)
- set(PNG_MAN_DIR "share/man")
- endif()
- install(FILES libpng.3 libpngpf.3 DESTINATION ${PNG_MAN_DIR}/man3)
- install(FILES png.5 DESTINATION ${PNG_MAN_DIR}/man5)
- # Install pkg-config files
- if(NOT WIN32 OR CYGWIN OR MINGW)
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/libpng.pc
- DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/libpng-config
- DESTINATION bin)
- install(FILES ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}.pc
- DESTINATION ${CMAKE_INSTALL_LIBDIR}/pkgconfig)
- install(PROGRAMS ${CMAKE_CURRENT_BINARY_DIR}/${PNGLIB_NAME}-config
- DESTINATION bin)
- endif(NOT WIN32 OR CYGWIN OR MINGW)
-endif()
-
-# On versions of CMake that support it, create an export file CMake
-# users can include() to import our targets
-if(PNG_EXPORT_RULE AND NOT SKIP_INSTALL_EXPORT AND NOT SKIP_INSTALL_ALL )
- install(EXPORT libpng DESTINATION lib/libpng FILE lib${PNG_LIB_NAME}.cmake)
-endif()
-
-# what's with libpng-$VER%.txt and all the extra files?
-
-# UNINSTALL
-# do we need this?
-
-# DIST
-# do we need this?
-
-# to create msvc import lib for mingw compiled shared lib
-# pexports libpng.dll > libpng.def
-# lib /def:libpng.def /machine:x86
-
+++ /dev/null
-
-Installing libpng
-
-On Unix/Linux and similar systems, you can simply type
-
- ./configure [--prefix=/path]
- make check
- make install
-
-and ignore the rest of this document.
-
-If configure does not work on your system, or if you have a need to
-change configure.ac or Makefile.am, and you have a reasonably
-up-to-date set of tools, running ./autogen.sh in a git clone before
-running ./configure may fix the problem. To be really sure that you
-aren't using any of the included pre-built scripts, you can do this:
-
- ./configure --enable-maintainer-mode
- make maintainer-clean
- ./autogen.sh --maintainer --clean
- ./autogen.sh --maintainer
- ./configure [--prefix=/path] [other options]
- make
- make install
- make check
-
-Instead, you can use one of the custom-built makefiles in the
-"scripts" directory
-
- cp scripts/makefile.system makefile
- make test
- make install
-
-The files that are presently available in the scripts directory
-are listed and described in scripts/README.txt.
-
-Or you can use one of the "projects" in the "projects" directory.
-
-Before installing libpng, you must first install zlib, if it
-is not already on your system. zlib can usually be found
-wherever you got libpng. zlib can be placed in another directory,
-at the same level as libpng.
-
-If your system already has a preinstalled zlib you will still need
-to have access to the zlib.h and zconf.h include files that
-correspond to the version of zlib that's installed.
-
-If you wish to test with a particular zlib that is not first in the
-standard library search path, put ZLIBLIB, ZLIBINC, CPPFLAGS, LDFLAGS,
-and LD_LIBRARY_PATH in your environment before running "make test"
-or "make distcheck":
-
-ZLIBLIB=/path/to/lib export ZLIBLIB
-ZLIBINC=/path/to/include export ZLIBINC
-CPPFLAGS="-I$ZLIBINC" export CPPFLAGS
-LDFLAGS="-L$ZLIBLIB" export LDFLAGS
-LD_LIBRARY_PATH="$ZLIBLIB:$LD_LIBRARY_PATH" export LD_LIBRARY_PATH
-
-If you are using one of the makefile scripts, put ZLIBLIB and ZLIBINC
-in your environment and type "make ZLIBLIB=$ZLIBLIB ZLIBINC=$ZLIBINC test".
-
-If you want to use "cmake" (see www.cmake.org), type
-
- cmake . -DCMAKE_INSTALL_PREFIX=/path
- make
- make install
-
-You can rename the directories that you downloaded (they
-might be called "libpng-x.y.z" or "libpngNN" and "zlib-1.2.7"
-or "zlib127") so that you have directories called "zlib" and "libpng".
-
-Your directory structure should look like this:
-
- .. (the parent directory)
- libpng (this directory)
- INSTALL (this file)
- README
- *.h
- *.c
- CMakeLists.txt => "cmake" script
- configuration files:
- configure.ac, configure, Makefile.am, Makefile.in,
- autogen.sh, config.guess, ltmain.sh, missing, libpng.pc.in,
- libpng-config.in, aclocal.m4, config.h.in, config.sub,
- depcomp, install-sh, mkinstalldirs, test-pngtest.sh
- contrib
- gregbook
- libtests
- pngminim
- pngminus
- pngsuite
- visupng
- projects
- visualc71
- vstudio
- scripts
- makefile.*
- *.def (module definition files)
- etc.
- pngtest.png
- etc.
- zlib
- README
- *.h
- *.c
- contrib
- etc.
-
-If the line endings in the files look funny, you may wish to get the other
-distribution of libpng. It is available in both tar.gz (UNIX style line
-endings) and zip (DOS style line endings) formats.
-
-If you are building libpng with MSVC, you can enter the
-libpng projects\visualc6 or visualc71 directory and follow the instructions
-in README.txt.
-
-Otherwise enter the zlib directory and follow the instructions in zlib/README,
-then come back here and run "configure" or choose the appropriate
-makefile.sys in the scripts directory.
-
-Copy the file (or files) that you need from the
-scripts directory into this directory, for example
-
- MSDOS example: copy scripts\makefile.msc makefile
- UNIX example: cp scripts/makefile.std makefile
-
-Read the makefile to see if you need to change any source or
-target directories to match your preferences.
-
-Then read pnglibconf.dfa to see if you want to make any configuration
-changes.
-
-Then just run "make" which will create the libpng library in
-this directory and "make test" which will run a quick test that reads
-the "pngtest.png" file and writes a "pngout.png" file that should be
-identical to it. Look for "9782 zero samples" in the output of the
-test. For more confidence, you can run another test by typing
-"pngtest pngnow.png" and looking for "289 zero samples" in the output.
-Also, you can run "pngtest -m contrib/pngsuite/*.png" and compare
-your output with the result shown in contrib/pngsuite/README.
-
-Most of the makefiles will allow you to run "make install" to
-put the library in its final resting place (if you want to
-do that, run "make install" in the zlib directory first if necessary).
-Some also allow you to run "make test-installed" after you have
-run "make install".
-
-Further information can be found in the README and libpng-manual.txt
-files, in the individual makefiles, in png.h, and the manual pages
-libpng.3 and png.5.
-
-Using the ./configure script -- 16 December 2002.
-=================================================
-
-The ./configure script should work compatibly with what scripts/makefile.*
-did, however there are some options you might need to add to configure
-explicitly, which previously was done semi-automatically (if you didn't edit
-scripts/makefile.* yourself, that is)
-
-CFLAGS="-Wall -O -funroll-loops \
--malign-loops=2 -malign-functions=2" ./configure --prefix=/usr/include \
---with-pkgconfigdir=/usr/lib/pkgconfig --includedir=/usr/include
-
-You can alternatively specify --includedir=/usr/include, /usr/local/include,
-/usr/include/libpng%NN%, or whatever.
-
-If you find that the configure script is out-of-date or is not supporting
-your platform properly, try running autogen.sh to regenerate "configure",
-"Makefile.in", and the other configuration files. Then try configure again.
-
+++ /dev/null
-
-This copy of the libpng notices is provided for your convenience. In case of
-any discrepancy between this copy and the notices in the file png.h that is
-included in the libpng distribution, the latter shall prevail.
-
-COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
-
-If you modify libpng you may insert additional notices immediately following
-this sentence.
-
-This code is released under the libpng license.
-
-libpng versions 1.2.6, August 15, 2004, through 1.6.3, July 18, 2013, are
-Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are
-distributed according to the same disclaimer and license as libpng-1.2.5
-with the following individual added to the list of Contributing Authors
-
- Cosmin Truta
-
-libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
-Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
-distributed according to the same disclaimer and license as libpng-1.0.6
-with the following individuals added to the list of Contributing Authors
-
- Simon-Pierre Cadieux
- Eric S. Raymond
- Gilles Vollant
-
-and with the following additions to the disclaimer:
-
- There is no warranty against interference with your enjoyment of the
- library or against infringement. There is no warranty that our
- efforts or the library will fulfill any of your particular purposes
- or needs. This library is provided with all faults, and the entire
- risk of satisfactory quality, performance, accuracy, and effort is with
- the user.
-
-libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
-Copyright (c) 1998, 1999 Glenn Randers-Pehrson, and are
-distributed according to the same disclaimer and license as libpng-0.96,
-with the following individuals added to the list of Contributing Authors:
-
- Tom Lane
- Glenn Randers-Pehrson
- Willem van Schaik
-
-libpng versions 0.89, June 1996, through 0.96, May 1997, are
-Copyright (c) 1996, 1997 Andreas Dilger
-Distributed according to the same disclaimer and license as libpng-0.88,
-with the following individuals added to the list of Contributing Authors:
-
- John Bowler
- Kevin Bracey
- Sam Bushell
- Magnus Holmgren
- Greg Roelofs
- Tom Tanner
-
-libpng versions 0.5, May 1995, through 0.88, January 1996, are
-Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
-
-For the purposes of this copyright and license, "Contributing Authors"
-is defined as the following set of individuals:
-
- Andreas Dilger
- Dave Martindale
- Guy Eric Schalnat
- Paul Schmidt
- Tim Wegner
-
-The PNG Reference Library is supplied "AS IS". The Contributing Authors
-and Group 42, Inc. disclaim all warranties, expressed or implied,
-including, without limitation, the warranties of merchantability and of
-fitness for any purpose. The Contributing Authors and Group 42, Inc.
-assume no liability for direct, indirect, incidental, special, exemplary,
-or consequential damages, which may result from the use of the PNG
-Reference Library, even if advised of the possibility of such damage.
-
-Permission is hereby granted to use, copy, modify, and distribute this
-source code, or portions hereof, for any purpose, without fee, subject
-to the following restrictions:
-
-1. The origin of this source code must not be misrepresented.
-
-2. Altered versions must be plainly marked as such and must not
- be misrepresented as being the original source.
-
-3. This Copyright notice may not be removed or altered from any
- source or altered source distribution.
-
-The Contributing Authors and Group 42, Inc. specifically permit, without
-fee, and encourage the use of this source code as a component to
-supporting the PNG file format in commercial products. If you use this
-source code in a product, acknowledgment is not required but would be
-appreciated.
-
-
-A "png_get_copyright" function is available, for convenient use in "about"
-boxes and the like:
-
- printf("%s",png_get_copyright(NULL));
-
-Also, the PNG logo (in PNG format, of course) is supplied in the
-files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
-
-Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a
-certification mark of the Open Source Initiative.
-
-Glenn Randers-Pehrson
-glennrp at users.sourceforge.net
-July 18, 2013
+++ /dev/null
-# Makefile.am:
-# Source file for Makefile.in (and hence Makefile)
-#
-
-PNGLIB_BASENAME= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
-
-ACLOCAL_AMFLAGS = -I scripts
-
-# test programs - run on make check, make distcheck
-check_PROGRAMS= pngtest pngunknown pngstest pngvalid
-
-# Utilities - installed
-bin_PROGRAMS= pngfix png-fix-itxt
-
-pngtest_SOURCES = pngtest.c
-pngtest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-
-pngvalid_SOURCES = contrib/libtests/pngvalid.c
-pngvalid_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-
-pngstest_SOURCES = contrib/libtests/pngstest.c
-pngstest_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-
-pngunknown_SOURCES = contrib/libtests/pngunknown.c
-pngunknown_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-
-pngfix_SOURCES = contrib/tools/pngfix.c
-pngfix_LDADD = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-
-png_fix_itxt_SOURCES = contrib/tools/png-fix-itxt.c
-
-# Generally these are single line shell scripts to run a test with a particular
-# set of parameters:
-TESTS =\
- tests/pngtest\
- tests/pngvalid-gamma-16-to-8 tests/pngvalid-gamma-alpha-mode\
- tests/pngvalid-gamma-background tests/pngvalid-gamma-expand16-alpha-mode\
- tests/pngvalid-gamma-expand16-background\
- tests/pngvalid-gamma-expand16-transform tests/pngvalid-gamma-sbit\
- tests/pngvalid-gamma-threshold tests/pngvalid-gamma-transform\
- tests/pngvalid-progressive-interlace-size\
- tests/pngvalid-progressive-interlace-standard\
- tests/pngvalid-progressive-interlace-transform\
- tests/pngvalid-progressive-standard tests/pngvalid-standard\
- tests/pngstest-0g01 tests/pngstest-0g02 tests/pngstest-0g04\
- tests/pngstest-0g08 tests/pngstest-0g16 tests/pngstest-2c08\
- tests/pngstest-2c16 tests/pngstest-3p01 tests/pngstest-3p02\
- tests/pngstest-3p04 tests/pngstest-3p08 tests/pngstest-4a08\
- tests/pngstest-4a16 tests/pngstest-6a08 tests/pngstest-6a16\
- tests/pngstest-error tests/pngunknown-IDAT\
- tests/pngunknown-discard tests/pngunknown-if-safe tests/pngunknown-sAPI\
- tests/pngunknown-sTER tests/pngunknown-save tests/pngunknown-vpAg
-
-# These tests are expected, and required, to fail:
-XFAIL_TESTS = tests/pngstest-error
-
-# man pages
-dist_man_MANS= libpng.3 libpngpf.3 png.5
-
-# generate the -config scripts if required
-binconfigs= libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
-EXTRA_SCRIPTS= libpng-config libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config
-bin_SCRIPTS= @binconfigs@
-
-# rules to build libpng, only build the old library on request
-lib_LTLIBRARIES=libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.la
-# EXTRA_LTLIBRARIES= libpng.la
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = png.c pngerror.c\
- pngget.c pngmem.c pngpread.c pngread.c pngrio.c pngrtran.c pngrutil.c\
- pngset.c pngtrans.c pngwio.c pngwrite.c pngwtran.c pngwutil.c\
- png.h pngconf.h pngdebug.h pnginfo.h pngpriv.h pngstruct.h pngusr.dfa
-
-if PNG_ARM_NEON
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES += arm/arm_init.c\
- arm/filter_neon.S
-endif
-
-nodist_libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_SOURCES = pnglibconf.h
-
-libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS = -no-undefined -export-dynamic \
- -version-number @PNGLIB_MAJOR@@PNGLIB_MINOR@:@PNGLIB_RELEASE@:0
-
-if HAVE_LD_VERSION_SCRIPT
-# Versioned symbols and restricted exports
-if HAVE_SOLARIS_LD
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,-M -Wl,libpng.vers
-else
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -Wl,--version-script=libpng.vers
-endif
-
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.vers
-else
-# Only restricted exports when possible
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_LDFLAGS += -export-symbols libpng.sym
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_DEPENDENCIES = libpng.sym
-endif
-
-#distribute headers in /usr/include/libpng/*
-pkgincludedir= $(includedir)/$(PNGLIB_BASENAME)
-pkginclude_HEADERS= png.h pngconf.h
-nodist_pkginclude_HEADERS= pnglibconf.h
-
-# pkg-config stuff, note that libpng.pc is always required in order
-# to get the correct library
-pkgconfigdir = @pkgconfigdir@
-pkgconfig_DATA = libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc
-
-# Extra source distribution files, '${srcdir}' is used below to stop build files
-# from those directories being included. This only works if the configure is
-# not done in the source directory!
-EXTRA_DIST= \
- ANNOUNCE CHANGES INSTALL LICENSE README TODO \
- pngtest.png pngbar.png pngnow.png pngbar.jpg autogen.sh \
- ${srcdir}/contrib ${srcdir}/projects ${srcdir}/scripts \
- $(TESTS) $(XFAIL_TESTS) tests/pngstest \
- CMakeLists.txt example.c libpng-manual.txt
-
-SCRIPT_CLEANFILES=scripts/*.out scripts/*.chk scripts/pnglibconf.dfn
-
-CLEANFILES= *.tf? pngout.png libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@.pc \
- libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@-config libpng.vers libpng.sym \
- check.new pnglibconf.* pngprefix.h symbols.new pngtest-log.txt \
- $(SCRIPT_CLEANFILES)
-
-MAINTAINERCLEANFILES = Makefile.in aclocal.m4 config.guess config.h.in \
-config.sub configure depcomp install-sh ltmain.sh missing
-
-# PNG_COPTS give extra options for the C compiler to be used on all compilation
-# steps (unless targe_CFLAGS is specified; that will take precedence over
-# AM_CFLAGS)
-PNG_COPTS = @PNG_COPTS@
-AM_CFLAGS = ${PNG_COPTS}
-
-# DFNCPP is normally just CPP - the C preprocessor - but on Solaris and maybe
-# other operating systems (NeXT?) the C preprocessor selected by configure
-# checks input tokens for validity - effectively it performs part of the ANSI-C
-# parsing - and therefore fails with the .df files. configure.ac has special
-# checks for this and sets DFNCPP appropriately.
-DFNCPP = @DFNCPP@
-
-SUFFIXES = .chk .dfn .out
-
-$(PNGLIB_BASENAME).pc: libpng.pc
- cp libpng.pc $@
-
-$(PNGLIB_BASENAME)-config: libpng-config
- cp libpng-config $@
-
-scripts/sym.out scripts/vers.out: png.h pngconf.h pnglibconf.h
-scripts/prefix.out: png.h pngconf.h pnglibconf.out
-scripts/symbols.out: png.h pngconf.h $(srcdir)/scripts/pnglibconf.h.prebuilt
-scripts/intprefix.out: pnglibconf.h
-
-libpng.sym: scripts/sym.out
- rm -f $@
- cp $? $@
-libpng.vers: scripts/vers.out
- rm -f $@
- cp $? $@
-
-if DO_PNG_PREFIX
-# Rename functions in scripts/prefix.out with a PNG_PREFIX prefix.
-# Rename macros in scripts/macro.lst from PNG_PREFIXpng_ to PNG_ (the actual
-# implementation of the macro).
-pnglibconf.h: pnglibconf.out scripts/prefix.out scripts/macro.lst
- rm -f $@
- $(AWK) 's==0 && NR>1{print prev}\
- s==0{prev=$$0}\
- s==1{print "#define", $$1, "@PNG_PREFIX@" $$1}\
- s==2{print "#define @PNG_PREFIX@png_" $$1, "PNG_" $$1}\
- END{print prev}' s=0 pnglibconf.out s=1 scripts/prefix.out\
- s=2 ${srcdir}/scripts/macro.lst >pnglibconf.tf8
- mv pnglibconf.tf8 $@
-
-pngprefix.h: scripts/intprefix.out
- rm -f pngprefix.tf1
- $(AWK) '{print "#define", $$1, "@PNG_PREFIX@" $$1}' $? >pngprefix.tf1
- mv pngprefix.tf1 $@
-else
-pnglibconf.h: pnglibconf.out
- rm -f $@
- cp $? $@
-
-pngprefix.h: # is empty
- :>$@
-endif
-
-$(srcdir)/scripts/pnglibconf.h.prebuilt:
- @echo "Attempting to build $@" >&2
- @echo "This is a machine generated file, but if you want to make" >&2
- @echo "a new one simply make 'scripts/pnglibconf.out', copy that" >&2
- @echo "AND set PNG_ZLIB_VERNUM to 0 (you MUST do this)" >&2
- @exit 1
-
-# The following is necessary to ensure that the local pnglibconf.h is used, not
-# an installed one (this can happen immediately after on a clean system if
-# 'make test' is the first thing the user does.)
-pngstest.o pngvalid.o pngtest.o pngunknown.o timepng.o: pnglibconf.h
-pngfix.o png-fix-itxt.o: pnglibconf.h
-
-# We must use -DPNG_NO_USE_READ_MACROS here even when the library may actually
-# be built with PNG_USE_READ_MACROS; this prevents the read macros from
-# interfering with the symbol file format.
-SYMBOL_CFLAGS = -DPNGLIB_LIBNAME='PNG@PNGLIB_MAJOR@@PNGLIB_MINOR@_0'\
- -DPNGLIB_VERSION='@PNGLIB_VERSION@'\
- -DSYMBOL_PREFIX='$(SYMBOL_PREFIX)'\
- -DPNG_NO_USE_READ_MACROS -DPNG_BUILDING_SYMBOL_TABLE
-
-if DO_PNG_PREFIX
-SYMBOL_CFLAGS += -DPNG_PREFIX='@PNG_PREFIX@'
-endif
-
-.dfn.out:
- rm -f $@ $*.c $*.tf[12]
- test -d scripts || mkdir scripts || test -d scripts
- echo '#include "$<"' >$*.c
- $(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES)\
- $(CPPFLAGS) $(SYMBOL_CFLAGS) $*.c > $*.tf1
- $(AWK) -f "${srcdir}/scripts/dfn.awk" out="$*.tf2" $*.tf1 1>&2
- rm -f $*.c $*.tf1
- mv $*.tf2 $@
-
-# The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
- rm -f $@ $*.tf[45]
- $(AWK) -f ${srcdir}/scripts/options.awk out=$*.tf4 version=search\
- ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
- ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f ${srcdir}/scripts/options.awk out=$*.tf5 $*.tf4 1>&2
- rm $*.tf4
- mv $*.tf5 $@
-
-# Symbol checks (.def and .out files should match)
-scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.out
-
-.out.chk:
- rm -f $@ $*.new
- $(AWK) -f ${srcdir}/scripts/checksym.awk ${srcdir}/scripts/${*F}.def\
- of="$*.new" $< >&2
- mv $*.new $@
-
-# used on demand to regenerate the standard header, CPPFLAGS should
-# be empty - no non-standard defines
-scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
- rm -f $@ pnglibconf.tf[67]
- test -z "$(CPPFLAGS)"
- echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
- $(AWK) -f ${srcdir}/scripts/options.awk out=pnglibconf.tf6\
- logunsupported=1 version=search ${srcdir}/pngconf.h -\
- ${srcdir}/scripts/pnglibconf.dfa 1>&2
- $(AWK) -f ${srcdir}/scripts/options.awk out=pnglibconf.tf7\
- pnglibconf.tf6 1>&2
- rm pnglibconf.tf6
- mv pnglibconf.tf7 $@
-
-$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS): png.h pngconf.h \
- pnglibconf.h pngpriv.h pngdebug.h pnginfo.h pngstruct.h pngprefix.h
-
-test: check-am
-
-# Extra checks
-check: scripts/symbols.chk
-
-# Don't distribute the generated script files
-dist-hook:
- cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
-
-# install the .../include headers as links to the new ones
-install-data-hook:
- cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
- cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
- cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
- pngconf.h
- cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
- pnglibconf.h
- cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
- cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
-
-# do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
-install-exec-hook:
- cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
- cd '$(DESTDIR)$(bindir)';\
- $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
- @set -x;\
- cd '$(DESTDIR)$(libdir)';\
- for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
- sl dylib dll.a; do\
- rm -f libpng.$$ext;\
- if test -f $(PNGLIB_BASENAME).$$ext; then\
- $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
- fi;\
- done
-
-uninstall-hook:
- cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
- rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
- rm -f '$(DESTDIR)$(bindir)/libpng-config'
- rm -f '$(DESTDIR)$(libdir)/libpng.a'
- rm -f '$(DESTDIR)$(libdir)/libpng.la'
- rm -f '$(DESTDIR)$(libdir)/libpng.so'
- rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
- rm -f '$(DESTDIR)$(libdir)/libpng.sl'
- rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
- rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
+++ /dev/null
-# Makefile.in generated by automake 1.13 from Makefile.am.
-# @configure_input@
-
-# Copyright (C) 1994-2012 Free Software Foundation, Inc.
-
-# This Makefile.in is free software; the Free Software Foundation
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-$(srcdir)/scripts/pnglibconf.h.prebuilt:
- @echo "Attempting to build $@" >&2
- @echo "This is a machine generated file, but if you want to make" >&2
- @echo "a new one simply make 'scripts/pnglibconf.out', copy that" >&2
- @echo "AND set PNG_ZLIB_VERNUM to 0 (you MUST do this)" >&2
- @exit 1
-
-# The following is necessary to ensure that the local pnglibconf.h is used, not
-# an installed one (this can happen immediately after on a clean system if
-# 'make test' is the first thing the user does.)
-pngstest.o pngvalid.o pngtest.o pngunknown.o timepng.o: pnglibconf.h
-pngfix.o png-fix-itxt.o: pnglibconf.h
-
-.dfn.out:
- rm -f $@ $*.c $*.tf[12]
- test -d scripts || mkdir scripts || test -d scripts
- echo '#include "$<"' >$*.c
- $(DFNCPP) $(DEFS) $(DEFAULT_INCLUDES) $(INCLUDES)\
- $(CPPFLAGS) $(SYMBOL_CFLAGS) $*.c > $*.tf1
- $(AWK) -f "${srcdir}/scripts/dfn.awk" out="$*.tf2" $*.tf1 1>&2
- rm -f $*.c $*.tf1
- mv $*.tf2 $@
-
-# The .dfn file for pnglibconf.h is machine generated
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
- rm -f $@ $*.tf[45]
- $(AWK) -f ${srcdir}/scripts/options.awk out=$*.tf4 version=search\
- ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
- ${srcdir}/pngusr.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f ${srcdir}/scripts/options.awk out=$*.tf5 $*.tf4 1>&2
- rm $*.tf4
- mv $*.tf5 $@
-
-# Symbol checks (.def and .out files should match)
-scripts/symbols.chk: scripts/checksym.awk scripts/symbols.def scripts/symbols.out
-
-.out.chk:
- rm -f $@ $*.new
- $(AWK) -f ${srcdir}/scripts/checksym.awk ${srcdir}/scripts/${*F}.def\
- of="$*.new" $< >&2
- mv $*.new $@
-
-# used on demand to regenerate the standard header, CPPFLAGS should
-# be empty - no non-standard defines
-scripts/pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h
- rm -f $@ pnglibconf.tf[67]
- test -z "$(CPPFLAGS)"
- echo "com @PNGLIB_VERSION@ STANDARD API DEFINITION" |\
- $(AWK) -f ${srcdir}/scripts/options.awk out=pnglibconf.tf6\
- logunsupported=1 version=search ${srcdir}/pngconf.h -\
- ${srcdir}/scripts/pnglibconf.dfa 1>&2
- $(AWK) -f ${srcdir}/scripts/options.awk out=pnglibconf.tf7\
- pnglibconf.tf6 1>&2
- rm pnglibconf.tf6
- mv pnglibconf.tf7 $@
-
-$(libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@_la_OBJECTS): png.h pngconf.h \
- pnglibconf.h pngpriv.h pngdebug.h pnginfo.h pngstruct.h pngprefix.h
-
-test: check-am
-
-# Extra checks
-check: scripts/symbols.chk
-
-# Don't distribute the generated script files
-dist-hook:
- cd '$(top_distdir)'; rm -f $(SCRIPT_CLEANFILES)
-
-# install the .../include headers as links to the new ones
-install-data-hook:
- cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
- cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/png.h png.h
- cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pngconf.h \
- pngconf.h
- cd '$(DESTDIR)$(includedir)'; $(LN_S) $(PNGLIB_BASENAME)/pnglibconf.h \
- pnglibconf.h
- cd '$(DESTDIR)$(pkgconfigdir)'; rm -f libpng.pc
- cd '$(DESTDIR)$(pkgconfigdir)'; $(LN_S) $(PNGLIB_BASENAME).pc libpng.pc
-
-# do evil things to libpng to cause libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ to be used
-install-exec-hook:
- cd '$(DESTDIR)$(bindir)'; rm -f libpng-config
- cd '$(DESTDIR)$(bindir)';\
- $(LN_S) $(PNGLIB_BASENAME)-config libpng-config
- @set -x;\
- cd '$(DESTDIR)$(libdir)';\
- for ext in a la so so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@\
- sl dylib dll.a; do\
- rm -f libpng.$$ext;\
- if test -f $(PNGLIB_BASENAME).$$ext; then\
- $(LN_S) $(PNGLIB_BASENAME).$$ext libpng.$$ext;\
- fi;\
- done
-
-uninstall-hook:
- cd '$(DESTDIR)$(includedir)'; rm -f png.h pngconf.h pnglibconf.h
- rm -f '$(DESTDIR)$(pkgconfigdir)/libpng.pc'
- rm -f '$(DESTDIR)$(bindir)/libpng-config'
- rm -f '$(DESTDIR)$(libdir)/libpng.a'
- rm -f '$(DESTDIR)$(libdir)/libpng.la'
- rm -f '$(DESTDIR)$(libdir)/libpng.so'
- rm -f '$(DESTDIR)$(libdir)/libpng.so.@PNGLIB_MAJOR@@PNGLIB_MINOR@.@PNGLIB_RELEASE@'
- rm -f '$(DESTDIR)$(libdir)/libpng.sl'
- rm -f '$(DESTDIR)$(libdir)/libpng.dylib'
- rm -f '$(DESTDIR)$(libdir)/libpng.dll.a'
-
-# Tell versions [3.59,3.63) of GNU make to not export all variables.
-# Otherwise a system limit (for SysV at least) may be exceeded.
-.NOEXPORT:
+++ /dev/null
-README for libpng version 1.6.3 - July 18, 2013 (shared library 16.0)
-See the note about version numbers near the top of png.h
-
-See INSTALL for instructions on how to install libpng.
-
-Libpng comes in several distribution formats. Get libpng-*.tar.gz or
-libpng-*.tar.xz or if you want UNIX-style line endings in the text files,
-or lpng*.7z or lpng*.zip if you want DOS-style line endings.
-
-Version 0.89 was the first official release of libpng. Don't let the
-fact that it's the first release fool you. The libpng library has been in
-extensive use and testing since mid-1995. By late 1997 it had
-finally gotten to the stage where there hadn't been significant
-changes to the API in some time, and people have a bad feeling about
-libraries with versions < 1.0. Version 1.0.0 was released in
-March 1998.
-
-****
-Note that some of the changes to the png_info structure render this
-version of the library binary incompatible with libpng-0.89 or
-earlier versions if you are using a shared library. The type of the
-"filler" parameter for png_set_filler() has changed from png_byte to
-png_uint_32, which will affect shared-library applications that use
-this function.
-
-To avoid problems with changes to the internals of png_info_struct,
-new APIs have been made available in 0.95 to avoid direct application
-access to info_ptr. These functions are the png_set_<chunk> and
-png_get_<chunk> functions. These functions should be used when
-accessing/storing the info_struct data, rather than manipulating it
-directly, to avoid such problems in the future.
-
-It is important to note that the APIs do not make current programs
-that access the info struct directly incompatible with the new
-library. However, it is strongly suggested that new programs use
-the new APIs (as shown in example.c and pngtest.c), and older programs
-be converted to the new format, to facilitate upgrades in the future.
-****
-
-Additions since 0.90 include the ability to compile libpng as a
-Windows DLL, and new APIs for accessing data in the info struct.
-Experimental functions include the ability to set weighting and cost
-factors for row filter selection, direct reads of integers from buffers
-on big-endian processors that support misaligned data access, faster
-methods of doing alpha composition, and more accurate 16->8 bit color
-conversion.
-
-The additions since 0.89 include the ability to read from a PNG stream
-which has had some (or all) of the signature bytes read by the calling
-application. This also allows the reading of embedded PNG streams that
-do not have the PNG file signature. As well, it is now possible to set
-the library action on the detection of chunk CRC errors. It is possible
-to set different actions based on whether the CRC error occurred in a
-critical or an ancillary chunk.
-
-The changes made to the library, and bugs fixed are based on discussions
-on the PNG-implement mailing list and not on material submitted
-privately to Guy, Andreas, or Glenn. They will forward any good
-suggestions to the list.
-
-For a detailed description on using libpng, read libpng-manual.txt. For
-examples of libpng in a program, see example.c and pngtest.c. For usage
-information and restrictions (what little they are) on libpng, see
-png.h. For a description on using zlib (the compression library used by
-libpng) and zlib's restrictions, see zlib.h
-
-I have included a general makefile, as well as several machine and
-compiler specific ones, but you may have to modify one for your own needs.
-
-You should use zlib 1.0.4 or later to run this, but it MAY work with
-versions as old as zlib 0.95. Even so, there are bugs in older zlib
-versions which can cause the output of invalid compression streams for
-some images. You will definitely need zlib 1.0.4 or later if you are
-taking advantage of the MS-DOS "far" structure allocation for the small
-and medium memory models. You should also note that zlib is a
-compression library that is useful for more things than just PNG files.
-You can use zlib as a drop-in replacement for fread() and fwrite() if
-you are so inclined.
-
-zlib should be available at the same place that libpng is, or at zlib.net.
-
-You may also want a copy of the PNG specification. It is available
-as an RFC, a W3C Recommendation, and an ISO/IEC Standard. You can find
-these at http://www.libpng.org/pub/png/documents/
-
-This code is currently being archived at libpng.sf.net in the
-[DOWNLOAD] area, and at ftp://ftp.simplesystems.org. If you can't find it
-in any of those places, e-mail me, and I'll help you find it.
-
-If you have any code changes, requests, problems, etc., please e-mail
-them to me. Also, I'd appreciate any make files or project files,
-and any modifications you needed to make to get libpng to compile,
-along with a #define variable to tell what compiler/system you are on.
-If you needed to add transformations to libpng, or wish libpng would
-provide the image in a different way, drop me a note (and code, if
-possible), so I can consider supporting the transformation.
-Finally, if you get any warning messages when compiling libpng
-(note: not zlib), and they are easy to fix, I'd appreciate the
-fix. Please mention "libpng" somewhere in the subject line. Thanks.
-
-This release was created and will be supported by myself (of course
-based in a large way on Guy's and Andreas' earlier work), and the PNG
-development group.
-
-Send comments/corrections/commendations to png-mng-implement at
-lists.sourceforge.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe) or to glennrp at users.sourceforge.net
-
-You can't reach Guy, the original libpng author, at the addresses
-given in previous versions of this document. He and Andreas will
-read mail addressed to the png-implement list, however.
-
-Please do not send general questions about PNG. Send them to
-png-mng-misc at lists.sf.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-misc to
-subscribe). If you have a question about something
-in the PNG specification that is related to using libpng, send it
-to me. Send me any questions that start with "I was using libpng,
-and ...". If in doubt, send questions to me. I'll bounce them
-to others, if necessary.
-
-Please do not send suggestions on how to change PNG. We have
-been discussing PNG for eighteen years now, and it is official and
-finished. If you have suggestions for libpng, however, I'll
-gladly listen. Even if your suggestion is not used immediately,
-it may be used later.
-
-Files in this distribution:
-
- ANNOUNCE => Announcement of this version, with recent changes
- CHANGES => Description of changes between libpng versions
- KNOWNBUG => List of known bugs and deficiencies
- LICENSE => License to use and redistribute libpng
- README => This file
- TODO => Things not implemented in the current library
- Y2KINFO => Statement of Y2K compliance
- example.c => Example code for using libpng functions
- libpng.3 => manual page for libpng (includes libpng-manual.txt)
- libpng-manual.txt => Description of libpng and its functions
- libpngpf.3 => manual page for libpng's private functions
- png.5 => manual page for the PNG format
- png.c => Basic interface functions common to library
- png.h => Library function and interface declarations (public)
- pngpriv.h => Library function and interface declarations (private)
- pngconf.h => System specific library configuration (public)
- pngstruct.h => png_struct declaration (private)
- pnginfo.h => png_info struct declaration (private)
- pngdebug.h => debugging macros (private)
- pngerror.c => Error/warning message I/O functions
- pngget.c => Functions for retrieving info from struct
- pngmem.c => Memory handling functions
- pngbar.png => PNG logo, 88x31
- pngnow.png => PNG logo, 98x31
- pngpread.c => Progressive reading functions
- pngread.c => Read data/helper high-level functions
- pngrio.c => Lowest-level data read I/O functions
- pngrtran.c => Read data transformation functions
- pngrutil.c => Read data utility functions
- pngset.c => Functions for storing data into the info_struct
- pngtest.c => Library test program
- pngtest.png => Library test sample image
- pngtrans.c => Common data transformation functions
- pngwio.c => Lowest-level write I/O functions
- pngwrite.c => High-level write functions
- pngwtran.c => Write data transformations
- pngwutil.c => Write utility functions
- arm => Contains optimized code for the ARM platform
- contrib => Contributions
- examples => Example programs
- gregbook => source code for PNG reading and writing, from
- Greg Roelofs' "PNG: The Definitive Guide",
- O'Reilly, 1999
- libtests => Test programs
- pngminim => Minimal decoder, encoder, and progressive decoder
- programs demonstrating use of pngusr.dfa
- pngminus => Simple pnm2png and png2pnm programs
- pngsuite => Test images
- tools => Various tools
- visupng => Contains a MSVC workspace for VisualPng
- projects => Contains project files and workspaces for
- building a DLL
- owatcom => Contains a WATCOM project for building libpng
- visualc71 => Contains a Microsoft Visual C++ (MSVC)
- workspace for building libpng and zlib
- vstudio => Contains a Microsoft Visual C++ (MSVC)
- workspace for building libpng and zlib
- scripts => Directory containing scripts for building libpng:
- (see scripts/README.txt for the list of scripts)
-
-Good luck, and happy coding.
-
--Glenn Randers-Pehrson (current maintainer, since 1998)
- Internet: glennrp at users.sourceforge.net
-
--Andreas Eric Dilger (former maintainer, 1996-1997)
- Internet: adilger at enel.ucalgary.ca
- Web: http://www-mddsp.enel.ucalgary.ca/People/adilger/
-
--Guy Eric Schalnat (original author and former maintainer, 1995-1996)
- (formerly of Group 42, Inc)
- Internet: gschal at infinet.com
+++ /dev/null
-/*
-TODO - list of things to do for libpng:
-
-Final bug fixes.
-Better C++ wrapper/full C++ implementation?
-Fix problem with C++ and EXTERN "C".
-cHRM transformation.
-Remove setjmp/longjmp usage in favor of returning error codes.
-Add "grayscale->palette" transformation and "palette->grayscale" detection.
-Improved dithering.
-Multi-lingual error and warning message support.
-Complete sRGB transformation (presently it simply uses gamma=0.45455).
-Man pages for function calls.
-Better documentation.
-Better filter selection
- (counting huffman bits/precompression? filter inertia? filter costs?).
-Histogram creation.
-Text conversion between different code pages (Latin-1 -> Mac and DOS).
-Avoid building gamma tables whenever possible.
-Use greater precision when changing to linear gamma for compositing against
- background and doing rgb-to-gray transformation.
-Investigate pre-incremented loop counters and other loop constructions.
-Add interpolated method of handling interlacing.
-Switch to the simpler zlib (zlib/libpng) license if legally possible.
-Extend pngvalid.c to validate more of the libpng transformations.
-
-*/
+++ /dev/null
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+++ /dev/null
-#! /bin/sh
-#
-# Run 'autoreconf' to build 'configure', 'Makefile.in' and other configure
-# control files.
-#
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- echo " ./autogen.sh generates the configure script and"
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- echo " use the appropriate autotools, *NOT* this script, to update"
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- echo " change and make does the right thing with:"
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- echo " mode and you can also just run autoreconf -f -i to initialize"
- echo " everything in the first place; this script is only for"
- echo " compatiblity with prior releases."
- exit 1
- else
- exec >&2
- echo "autogen.sh is intended only to generate 'configure' on systems"
- echo "that do not have it. You have a complete 'configure', if you"
- echo "need to change Makefile.am or configure.ac you also need to"
- echo "run configure with the --enable-maintainer-mode option."
- exit 1
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-
- broken)
- exec >&2
- echo "Your system has a partial set of autotools generated files."
- echo "autogen.sh is unable to proceed. The full set of files is"
- echo "contained in the libpng 'tar' distribution archive and you do"
- echo "not need to run autogen.sh if you use it."
- exit 1;;
-esac
+++ /dev/null
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-# under the terms of the GNU General Public License as published by
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-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception to the GNU General Public License, if you
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-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
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-#
-# This script attempts to guess a canonical system name similar to
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-# You can get the latest version of this script from:
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-Free Software Foundation, Inc.
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-# (ghazi@noc.rutgers.edu 1994-08-24)
-if (test -f /.attbin/uname) >/dev/null 2>&1 ; then
- PATH=$PATH:/.attbin ; export PATH
-fi
-
-UNAME_MACHINE=`(uname -m) 2>/dev/null` || UNAME_MACHINE=unknown
-UNAME_RELEASE=`(uname -r) 2>/dev/null` || UNAME_RELEASE=unknown
-UNAME_SYSTEM=`(uname -s) 2>/dev/null` || UNAME_SYSTEM=unknown
-UNAME_VERSION=`(uname -v) 2>/dev/null` || UNAME_VERSION=unknown
-
-# Note: order is significant - the case branches are not exclusive.
-
-case "${UNAME_MACHINE}:${UNAME_SYSTEM}:${UNAME_RELEASE}:${UNAME_VERSION}" in
- *:NetBSD:*:*)
- # NetBSD (nbsd) targets should (where applicable) match one or
- # more of the tuples: *-*-netbsdelf*, *-*-netbsdaout*,
- # *-*-netbsdecoff* and *-*-netbsd*. For targets that recently
- # switched to ELF, *-*-netbsd* would select the old
- # object file format. This provides both forward
- # compatibility and a consistent mechanism for selecting the
- # object file format.
- #
- # Note: NetBSD doesn't particularly care about the vendor
- # portion of the name. We always set it to "unknown".
- sysctl="sysctl -n hw.machine_arch"
- UNAME_MACHINE_ARCH=`(/sbin/$sysctl 2>/dev/null || \
- /usr/sbin/$sysctl 2>/dev/null || echo unknown)`
- case "${UNAME_MACHINE_ARCH}" in
- armeb) machine=armeb-unknown ;;
- arm*) machine=arm-unknown ;;
- sh3el) machine=shl-unknown ;;
- sh3eb) machine=sh-unknown ;;
- sh5el) machine=sh5le-unknown ;;
- *) machine=${UNAME_MACHINE_ARCH}-unknown ;;
- esac
- # The Operating System including object format, if it has switched
- # to ELF recently, or will in the future.
- case "${UNAME_MACHINE_ARCH}" in
- arm*|i386|m68k|ns32k|sh3*|sparc|vax)
- eval $set_cc_for_build
- if echo __ELF__ | $CC_FOR_BUILD -E - 2>/dev/null \
- | grep -q __ELF__
- then
- # Once all utilities can be ECOFF (netbsdecoff) or a.out (netbsdaout).
- # Return netbsd for either. FIX?
- os=netbsd
- else
- os=netbsdelf
- fi
- ;;
- *)
- os=netbsd
- ;;
- esac
- # The OS release
- # Debian GNU/NetBSD machines have a different userland, and
- # thus, need a distinct triplet. However, they do not need
- # kernel version information, so it can be replaced with a
- # suitable tag, in the style of linux-gnu.
- case "${UNAME_VERSION}" in
- Debian*)
- release='-gnu'
- ;;
- *)
- release=`echo ${UNAME_RELEASE}|sed -e 's/[-_].*/\./'`
- ;;
- esac
- # Since CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM:
- # contains redundant information, the shorter form:
- # CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM is used.
- echo "${machine}-${os}${release}"
- exit ;;
- *:Bitrig:*:*)
- UNAME_MACHINE_ARCH=`arch | sed 's/Bitrig.//'`
- echo ${UNAME_MACHINE_ARCH}-unknown-bitrig${UNAME_RELEASE}
- exit ;;
- *:OpenBSD:*:*)
- UNAME_MACHINE_ARCH=`arch | sed 's/OpenBSD.//'`
- echo ${UNAME_MACHINE_ARCH}-unknown-openbsd${UNAME_RELEASE}
- exit ;;
- *:ekkoBSD:*:*)
- echo ${UNAME_MACHINE}-unknown-ekkobsd${UNAME_RELEASE}
- exit ;;
- *:SolidBSD:*:*)
- echo ${UNAME_MACHINE}-unknown-solidbsd${UNAME_RELEASE}
- exit ;;
- macppc:MirBSD:*:*)
- echo powerpc-unknown-mirbsd${UNAME_RELEASE}
- exit ;;
- *:MirBSD:*:*)
- echo ${UNAME_MACHINE}-unknown-mirbsd${UNAME_RELEASE}
- exit ;;
- alpha:OSF1:*:*)
- case $UNAME_RELEASE in
- *4.0)
- UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $3}'`
- ;;
- *5.*)
- UNAME_RELEASE=`/usr/sbin/sizer -v | awk '{print $4}'`
- ;;
- esac
- # According to Compaq, /usr/sbin/psrinfo has been available on
- # OSF/1 and Tru64 systems produced since 1995. I hope that
- # covers most systems running today. This code pipes the CPU
- # types through head -n 1, so we only detect the type of CPU 0.
- ALPHA_CPU_TYPE=`/usr/sbin/psrinfo -v | sed -n -e 's/^ The alpha \(.*\) processor.*$/\1/p' | head -n 1`
- case "$ALPHA_CPU_TYPE" in
- "EV4 (21064)")
- UNAME_MACHINE="alpha" ;;
- "EV4.5 (21064)")
- UNAME_MACHINE="alpha" ;;
- "LCA4 (21066/21068)")
- UNAME_MACHINE="alpha" ;;
- "EV5 (21164)")
- UNAME_MACHINE="alphaev5" ;;
- "EV5.6 (21164A)")
- UNAME_MACHINE="alphaev56" ;;
- "EV5.6 (21164PC)")
- UNAME_MACHINE="alphapca56" ;;
- "EV5.7 (21164PC)")
- UNAME_MACHINE="alphapca57" ;;
- "EV6 (21264)")
- UNAME_MACHINE="alphaev6" ;;
- "EV6.7 (21264A)")
- UNAME_MACHINE="alphaev67" ;;
- "EV6.8CB (21264C)")
- UNAME_MACHINE="alphaev68" ;;
- "EV6.8AL (21264B)")
- UNAME_MACHINE="alphaev68" ;;
- "EV6.8CX (21264D)")
- UNAME_MACHINE="alphaev68" ;;
- "EV6.9A (21264/EV69A)")
- UNAME_MACHINE="alphaev69" ;;
- "EV7 (21364)")
- UNAME_MACHINE="alphaev7" ;;
- "EV7.9 (21364A)")
- UNAME_MACHINE="alphaev79" ;;
- esac
- # A Pn.n version is a patched version.
- # A Vn.n version is a released version.
- # A Tn.n version is a released field test version.
- # A Xn.n version is an unreleased experimental baselevel.
- # 1.2 uses "1.2" for uname -r.
- echo ${UNAME_MACHINE}-dec-osf`echo ${UNAME_RELEASE} | sed -e 's/^[PVTX]//' | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
- # Reset EXIT trap before exiting to avoid spurious non-zero exit code.
- exitcode=$?
- trap '' 0
- exit $exitcode ;;
- Alpha\ *:Windows_NT*:*)
- # How do we know it's Interix rather than the generic POSIX subsystem?
- # Should we change UNAME_MACHINE based on the output of uname instead
- # of the specific Alpha model?
- echo alpha-pc-interix
- exit ;;
- 21064:Windows_NT:50:3)
- echo alpha-dec-winnt3.5
- exit ;;
- Amiga*:UNIX_System_V:4.0:*)
- echo m68k-unknown-sysv4
- exit ;;
- *:[Aa]miga[Oo][Ss]:*:*)
- echo ${UNAME_MACHINE}-unknown-amigaos
- exit ;;
- *:[Mm]orph[Oo][Ss]:*:*)
- echo ${UNAME_MACHINE}-unknown-morphos
- exit ;;
- *:OS/390:*:*)
- echo i370-ibm-openedition
- exit ;;
- *:z/VM:*:*)
- echo s390-ibm-zvmoe
- exit ;;
- *:OS400:*:*)
- echo powerpc-ibm-os400
- exit ;;
- arm:RISC*:1.[012]*:*|arm:riscix:1.[012]*:*)
- echo arm-acorn-riscix${UNAME_RELEASE}
- exit ;;
- arm*:riscos:*:*|arm*:RISCOS:*:*)
- echo arm-unknown-riscos
- exit ;;
- SR2?01:HI-UX/MPP:*:* | SR8000:HI-UX/MPP:*:*)
- echo hppa1.1-hitachi-hiuxmpp
- exit ;;
- Pyramid*:OSx*:*:* | MIS*:OSx*:*:* | MIS*:SMP_DC-OSx*:*:*)
- # akee@wpdis03.wpafb.af.mil (Earle F. Ake) contributed MIS and NILE.
- if test "`(/bin/universe) 2>/dev/null`" = att ; then
- echo pyramid-pyramid-sysv3
- else
- echo pyramid-pyramid-bsd
- fi
- exit ;;
- NILE*:*:*:dcosx)
- echo pyramid-pyramid-svr4
- exit ;;
- DRS?6000:unix:4.0:6*)
- echo sparc-icl-nx6
- exit ;;
- DRS?6000:UNIX_SV:4.2*:7* | DRS?6000:isis:4.2*:7*)
- case `/usr/bin/uname -p` in
- sparc) echo sparc-icl-nx7; exit ;;
- esac ;;
- s390x:SunOS:*:*)
- echo ${UNAME_MACHINE}-ibm-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
- exit ;;
- sun4H:SunOS:5.*:*)
- echo sparc-hal-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
- exit ;;
- sun4*:SunOS:5.*:* | tadpole*:SunOS:5.*:*)
- echo sparc-sun-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
- exit ;;
- i86pc:AuroraUX:5.*:* | i86xen:AuroraUX:5.*:*)
- echo i386-pc-auroraux${UNAME_RELEASE}
- exit ;;
- i86pc:SunOS:5.*:* | i86xen:SunOS:5.*:*)
- eval $set_cc_for_build
- SUN_ARCH="i386"
- # If there is a compiler, see if it is configured for 64-bit objects.
- # Note that the Sun cc does not turn __LP64__ into 1 like gcc does.
- # This test works for both compilers.
- if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
- if (echo '#ifdef __amd64'; echo IS_64BIT_ARCH; echo '#endif') | \
- (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
- grep IS_64BIT_ARCH >/dev/null
- then
- SUN_ARCH="x86_64"
- fi
- fi
- echo ${SUN_ARCH}-pc-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
- exit ;;
- sun4*:SunOS:6*:*)
- # According to config.sub, this is the proper way to canonicalize
- # SunOS6. Hard to guess exactly what SunOS6 will be like, but
- # it's likely to be more like Solaris than SunOS4.
- echo sparc-sun-solaris3`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
- exit ;;
- sun4*:SunOS:*:*)
- case "`/usr/bin/arch -k`" in
- Series*|S4*)
- UNAME_RELEASE=`uname -v`
- ;;
- esac
- # Japanese Language versions have a version number like `4.1.3-JL'.
- echo sparc-sun-sunos`echo ${UNAME_RELEASE}|sed -e 's/-/_/'`
- exit ;;
- sun3*:SunOS:*:*)
- echo m68k-sun-sunos${UNAME_RELEASE}
- exit ;;
- sun*:*:4.2BSD:*)
- UNAME_RELEASE=`(sed 1q /etc/motd | awk '{print substr($5,1,3)}') 2>/dev/null`
- test "x${UNAME_RELEASE}" = "x" && UNAME_RELEASE=3
- case "`/bin/arch`" in
- sun3)
- echo m68k-sun-sunos${UNAME_RELEASE}
- ;;
- sun4)
- echo sparc-sun-sunos${UNAME_RELEASE}
- ;;
- esac
- exit ;;
- aushp:SunOS:*:*)
- echo sparc-auspex-sunos${UNAME_RELEASE}
- exit ;;
- # The situation for MiNT is a little confusing. The machine name
- # can be virtually everything (everything which is not
- # "atarist" or "atariste" at least should have a processor
- # > m68000). The system name ranges from "MiNT" over "FreeMiNT"
- # to the lowercase version "mint" (or "freemint"). Finally
- # the system name "TOS" denotes a system which is actually not
- # MiNT. But MiNT is downward compatible to TOS, so this should
- # be no problem.
- atarist[e]:*MiNT:*:* | atarist[e]:*mint:*:* | atarist[e]:*TOS:*:*)
- echo m68k-atari-mint${UNAME_RELEASE}
- exit ;;
- atari*:*MiNT:*:* | atari*:*mint:*:* | atarist[e]:*TOS:*:*)
- echo m68k-atari-mint${UNAME_RELEASE}
- exit ;;
- *falcon*:*MiNT:*:* | *falcon*:*mint:*:* | *falcon*:*TOS:*:*)
- echo m68k-atari-mint${UNAME_RELEASE}
- exit ;;
- milan*:*MiNT:*:* | milan*:*mint:*:* | *milan*:*TOS:*:*)
- echo m68k-milan-mint${UNAME_RELEASE}
- exit ;;
- hades*:*MiNT:*:* | hades*:*mint:*:* | *hades*:*TOS:*:*)
- echo m68k-hades-mint${UNAME_RELEASE}
- exit ;;
- *:*MiNT:*:* | *:*mint:*:* | *:*TOS:*:*)
- echo m68k-unknown-mint${UNAME_RELEASE}
- exit ;;
- m68k:machten:*:*)
- echo m68k-apple-machten${UNAME_RELEASE}
- exit ;;
- powerpc:machten:*:*)
- echo powerpc-apple-machten${UNAME_RELEASE}
- exit ;;
- RISC*:Mach:*:*)
- echo mips-dec-mach_bsd4.3
- exit ;;
- RISC*:ULTRIX:*:*)
- echo mips-dec-ultrix${UNAME_RELEASE}
- exit ;;
- VAX*:ULTRIX*:*:*)
- echo vax-dec-ultrix${UNAME_RELEASE}
- exit ;;
- 2020:CLIX:*:* | 2430:CLIX:*:*)
- echo clipper-intergraph-clix${UNAME_RELEASE}
- exit ;;
- mips:*:*:UMIPS | mips:*:*:RISCos)
- eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
-#ifdef __cplusplus
-#include <stdio.h> /* for printf() prototype */
- int main (int argc, char *argv[]) {
-#else
- int main (argc, argv) int argc; char *argv[]; {
-#endif
- #if defined (host_mips) && defined (MIPSEB)
- #if defined (SYSTYPE_SYSV)
- printf ("mips-mips-riscos%ssysv\n", argv[1]); exit (0);
- #endif
- #if defined (SYSTYPE_SVR4)
- printf ("mips-mips-riscos%ssvr4\n", argv[1]); exit (0);
- #endif
- #if defined (SYSTYPE_BSD43) || defined(SYSTYPE_BSD)
- printf ("mips-mips-riscos%sbsd\n", argv[1]); exit (0);
- #endif
- #endif
- exit (-1);
- }
-EOF
- $CC_FOR_BUILD -o $dummy $dummy.c &&
- dummyarg=`echo "${UNAME_RELEASE}" | sed -n 's/\([0-9]*\).*/\1/p'` &&
- SYSTEM_NAME=`$dummy $dummyarg` &&
- { echo "$SYSTEM_NAME"; exit; }
- echo mips-mips-riscos${UNAME_RELEASE}
- exit ;;
- Motorola:PowerMAX_OS:*:*)
- echo powerpc-motorola-powermax
- exit ;;
- Motorola:*:4.3:PL8-*)
- echo powerpc-harris-powermax
- exit ;;
- Night_Hawk:*:*:PowerMAX_OS | Synergy:PowerMAX_OS:*:*)
- echo powerpc-harris-powermax
- exit ;;
- Night_Hawk:Power_UNIX:*:*)
- echo powerpc-harris-powerunix
- exit ;;
- m88k:CX/UX:7*:*)
- echo m88k-harris-cxux7
- exit ;;
- m88k:*:4*:R4*)
- echo m88k-motorola-sysv4
- exit ;;
- m88k:*:3*:R3*)
- echo m88k-motorola-sysv3
- exit ;;
- AViiON:dgux:*:*)
- # DG/UX returns AViiON for all architectures
- UNAME_PROCESSOR=`/usr/bin/uname -p`
- if [ $UNAME_PROCESSOR = mc88100 ] || [ $UNAME_PROCESSOR = mc88110 ]
- then
- if [ ${TARGET_BINARY_INTERFACE}x = m88kdguxelfx ] || \
- [ ${TARGET_BINARY_INTERFACE}x = x ]
- then
- echo m88k-dg-dgux${UNAME_RELEASE}
- else
- echo m88k-dg-dguxbcs${UNAME_RELEASE}
- fi
- else
- echo i586-dg-dgux${UNAME_RELEASE}
- fi
- exit ;;
- M88*:DolphinOS:*:*) # DolphinOS (SVR3)
- echo m88k-dolphin-sysv3
- exit ;;
- M88*:*:R3*:*)
- # Delta 88k system running SVR3
- echo m88k-motorola-sysv3
- exit ;;
- XD88*:*:*:*) # Tektronix XD88 system running UTekV (SVR3)
- echo m88k-tektronix-sysv3
- exit ;;
- Tek43[0-9][0-9]:UTek:*:*) # Tektronix 4300 system running UTek (BSD)
- echo m68k-tektronix-bsd
- exit ;;
- *:IRIX*:*:*)
- echo mips-sgi-irix`echo ${UNAME_RELEASE}|sed -e 's/-/_/g'`
- exit ;;
- ????????:AIX?:[12].1:2) # AIX 2.2.1 or AIX 2.1.1 is RT/PC AIX.
- echo romp-ibm-aix # uname -m gives an 8 hex-code CPU id
- exit ;; # Note that: echo "'`uname -s`'" gives 'AIX '
- i*86:AIX:*:*)
- echo i386-ibm-aix
- exit ;;
- ia64:AIX:*:*)
- if [ -x /usr/bin/oslevel ] ; then
- IBM_REV=`/usr/bin/oslevel`
- else
- IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
- fi
- echo ${UNAME_MACHINE}-ibm-aix${IBM_REV}
- exit ;;
- *:AIX:2:3)
- if grep bos325 /usr/include/stdio.h >/dev/null 2>&1; then
- eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
- #include <sys/systemcfg.h>
-
- main()
- {
- if (!__power_pc())
- exit(1);
- puts("powerpc-ibm-aix3.2.5");
- exit(0);
- }
-EOF
- if $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy`
- then
- echo "$SYSTEM_NAME"
- else
- echo rs6000-ibm-aix3.2.5
- fi
- elif grep bos324 /usr/include/stdio.h >/dev/null 2>&1; then
- echo rs6000-ibm-aix3.2.4
- else
- echo rs6000-ibm-aix3.2
- fi
- exit ;;
- *:AIX:*:[4567])
- IBM_CPU_ID=`/usr/sbin/lsdev -C -c processor -S available | sed 1q | awk '{ print $1 }'`
- if /usr/sbin/lsattr -El ${IBM_CPU_ID} | grep ' POWER' >/dev/null 2>&1; then
- IBM_ARCH=rs6000
- else
- IBM_ARCH=powerpc
- fi
- if [ -x /usr/bin/oslevel ] ; then
- IBM_REV=`/usr/bin/oslevel`
- else
- IBM_REV=${UNAME_VERSION}.${UNAME_RELEASE}
- fi
- echo ${IBM_ARCH}-ibm-aix${IBM_REV}
- exit ;;
- *:AIX:*:*)
- echo rs6000-ibm-aix
- exit ;;
- ibmrt:4.4BSD:*|romp-ibm:BSD:*)
- echo romp-ibm-bsd4.4
- exit ;;
- ibmrt:*BSD:*|romp-ibm:BSD:*) # covers RT/PC BSD and
- echo romp-ibm-bsd${UNAME_RELEASE} # 4.3 with uname added to
- exit ;; # report: romp-ibm BSD 4.3
- *:BOSX:*:*)
- echo rs6000-bull-bosx
- exit ;;
- DPX/2?00:B.O.S.:*:*)
- echo m68k-bull-sysv3
- exit ;;
- 9000/[34]??:4.3bsd:1.*:*)
- echo m68k-hp-bsd
- exit ;;
- hp300:4.4BSD:*:* | 9000/[34]??:4.3bsd:2.*:*)
- echo m68k-hp-bsd4.4
- exit ;;
- 9000/[34678]??:HP-UX:*:*)
- HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
- case "${UNAME_MACHINE}" in
- 9000/31? ) HP_ARCH=m68000 ;;
- 9000/[34]?? ) HP_ARCH=m68k ;;
- 9000/[678][0-9][0-9])
- if [ -x /usr/bin/getconf ]; then
- sc_cpu_version=`/usr/bin/getconf SC_CPU_VERSION 2>/dev/null`
- sc_kernel_bits=`/usr/bin/getconf SC_KERNEL_BITS 2>/dev/null`
- case "${sc_cpu_version}" in
- 523) HP_ARCH="hppa1.0" ;; # CPU_PA_RISC1_0
- 528) HP_ARCH="hppa1.1" ;; # CPU_PA_RISC1_1
- 532) # CPU_PA_RISC2_0
- case "${sc_kernel_bits}" in
- 32) HP_ARCH="hppa2.0n" ;;
- 64) HP_ARCH="hppa2.0w" ;;
- '') HP_ARCH="hppa2.0" ;; # HP-UX 10.20
- esac ;;
- esac
- fi
- if [ "${HP_ARCH}" = "" ]; then
- eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
-
- #define _HPUX_SOURCE
- #include <stdlib.h>
- #include <unistd.h>
-
- int main ()
- {
- #if defined(_SC_KERNEL_BITS)
- long bits = sysconf(_SC_KERNEL_BITS);
- #endif
- long cpu = sysconf (_SC_CPU_VERSION);
-
- switch (cpu)
- {
- case CPU_PA_RISC1_0: puts ("hppa1.0"); break;
- case CPU_PA_RISC1_1: puts ("hppa1.1"); break;
- case CPU_PA_RISC2_0:
- #if defined(_SC_KERNEL_BITS)
- switch (bits)
- {
- case 64: puts ("hppa2.0w"); break;
- case 32: puts ("hppa2.0n"); break;
- default: puts ("hppa2.0"); break;
- } break;
- #else /* !defined(_SC_KERNEL_BITS) */
- puts ("hppa2.0"); break;
- #endif
- default: puts ("hppa1.0"); break;
- }
- exit (0);
- }
-EOF
- (CCOPTS= $CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null) && HP_ARCH=`$dummy`
- test -z "$HP_ARCH" && HP_ARCH=hppa
- fi ;;
- esac
- if [ ${HP_ARCH} = "hppa2.0w" ]
- then
- eval $set_cc_for_build
-
- # hppa2.0w-hp-hpux* has a 64-bit kernel and a compiler generating
- # 32-bit code. hppa64-hp-hpux* has the same kernel and a compiler
- # generating 64-bit code. GNU and HP use different nomenclature:
- #
- # $ CC_FOR_BUILD=cc ./config.guess
- # => hppa2.0w-hp-hpux11.23
- # $ CC_FOR_BUILD="cc +DA2.0w" ./config.guess
- # => hppa64-hp-hpux11.23
-
- if echo __LP64__ | (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) |
- grep -q __LP64__
- then
- HP_ARCH="hppa2.0w"
- else
- HP_ARCH="hppa64"
- fi
- fi
- echo ${HP_ARCH}-hp-hpux${HPUX_REV}
- exit ;;
- ia64:HP-UX:*:*)
- HPUX_REV=`echo ${UNAME_RELEASE}|sed -e 's/[^.]*.[0B]*//'`
- echo ia64-hp-hpux${HPUX_REV}
- exit ;;
- 3050*:HI-UX:*:*)
- eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
- #include <unistd.h>
- int
- main ()
- {
- long cpu = sysconf (_SC_CPU_VERSION);
- /* The order matters, because CPU_IS_HP_MC68K erroneously returns
- true for CPU_PA_RISC1_0. CPU_IS_PA_RISC returns correct
- results, however. */
- if (CPU_IS_PA_RISC (cpu))
- {
- switch (cpu)
- {
- case CPU_PA_RISC1_0: puts ("hppa1.0-hitachi-hiuxwe2"); break;
- case CPU_PA_RISC1_1: puts ("hppa1.1-hitachi-hiuxwe2"); break;
- case CPU_PA_RISC2_0: puts ("hppa2.0-hitachi-hiuxwe2"); break;
- default: puts ("hppa-hitachi-hiuxwe2"); break;
- }
- }
- else if (CPU_IS_HP_MC68K (cpu))
- puts ("m68k-hitachi-hiuxwe2");
- else puts ("unknown-hitachi-hiuxwe2");
- exit (0);
- }
-EOF
- $CC_FOR_BUILD -o $dummy $dummy.c && SYSTEM_NAME=`$dummy` &&
- { echo "$SYSTEM_NAME"; exit; }
- echo unknown-hitachi-hiuxwe2
- exit ;;
- 9000/7??:4.3bsd:*:* | 9000/8?[79]:4.3bsd:*:* )
- echo hppa1.1-hp-bsd
- exit ;;
- 9000/8??:4.3bsd:*:*)
- echo hppa1.0-hp-bsd
- exit ;;
- *9??*:MPE/iX:*:* | *3000*:MPE/iX:*:*)
- echo hppa1.0-hp-mpeix
- exit ;;
- hp7??:OSF1:*:* | hp8?[79]:OSF1:*:* )
- echo hppa1.1-hp-osf
- exit ;;
- hp8??:OSF1:*:*)
- echo hppa1.0-hp-osf
- exit ;;
- i*86:OSF1:*:*)
- if [ -x /usr/sbin/sysversion ] ; then
- echo ${UNAME_MACHINE}-unknown-osf1mk
- else
- echo ${UNAME_MACHINE}-unknown-osf1
- fi
- exit ;;
- parisc*:Lites*:*:*)
- echo hppa1.1-hp-lites
- exit ;;
- C1*:ConvexOS:*:* | convex:ConvexOS:C1*:*)
- echo c1-convex-bsd
- exit ;;
- C2*:ConvexOS:*:* | convex:ConvexOS:C2*:*)
- if getsysinfo -f scalar_acc
- then echo c32-convex-bsd
- else echo c2-convex-bsd
- fi
- exit ;;
- C34*:ConvexOS:*:* | convex:ConvexOS:C34*:*)
- echo c34-convex-bsd
- exit ;;
- C38*:ConvexOS:*:* | convex:ConvexOS:C38*:*)
- echo c38-convex-bsd
- exit ;;
- C4*:ConvexOS:*:* | convex:ConvexOS:C4*:*)
- echo c4-convex-bsd
- exit ;;
- CRAY*Y-MP:*:*:*)
- echo ymp-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
- exit ;;
- CRAY*[A-Z]90:*:*:*)
- echo ${UNAME_MACHINE}-cray-unicos${UNAME_RELEASE} \
- | sed -e 's/CRAY.*\([A-Z]90\)/\1/' \
- -e y/ABCDEFGHIJKLMNOPQRSTUVWXYZ/abcdefghijklmnopqrstuvwxyz/ \
- -e 's/\.[^.]*$/.X/'
- exit ;;
- CRAY*TS:*:*:*)
- echo t90-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
- exit ;;
- CRAY*T3E:*:*:*)
- echo alphaev5-cray-unicosmk${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
- exit ;;
- CRAY*SV1:*:*:*)
- echo sv1-cray-unicos${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
- exit ;;
- *:UNICOS/mp:*:*)
- echo craynv-cray-unicosmp${UNAME_RELEASE} | sed -e 's/\.[^.]*$/.X/'
- exit ;;
- F30[01]:UNIX_System_V:*:* | F700:UNIX_System_V:*:*)
- FUJITSU_PROC=`uname -m | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz'`
- FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
- FUJITSU_REL=`echo ${UNAME_RELEASE} | sed -e 's/ /_/'`
- echo "${FUJITSU_PROC}-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
- exit ;;
- 5000:UNIX_System_V:4.*:*)
- FUJITSU_SYS=`uname -p | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/\///'`
- FUJITSU_REL=`echo ${UNAME_RELEASE} | tr 'ABCDEFGHIJKLMNOPQRSTUVWXYZ' 'abcdefghijklmnopqrstuvwxyz' | sed -e 's/ /_/'`
- echo "sparc-fujitsu-${FUJITSU_SYS}${FUJITSU_REL}"
- exit ;;
- i*86:BSD/386:*:* | i*86:BSD/OS:*:* | *:Ascend\ Embedded/OS:*:*)
- echo ${UNAME_MACHINE}-pc-bsdi${UNAME_RELEASE}
- exit ;;
- sparc*:BSD/OS:*:*)
- echo sparc-unknown-bsdi${UNAME_RELEASE}
- exit ;;
- *:BSD/OS:*:*)
- echo ${UNAME_MACHINE}-unknown-bsdi${UNAME_RELEASE}
- exit ;;
- *:FreeBSD:*:*)
- UNAME_PROCESSOR=`/usr/bin/uname -p`
- case ${UNAME_PROCESSOR} in
- amd64)
- echo x86_64-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
- *)
- echo ${UNAME_PROCESSOR}-unknown-freebsd`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'` ;;
- esac
- exit ;;
- i*:CYGWIN*:*)
- echo ${UNAME_MACHINE}-pc-cygwin
- exit ;;
- *:MINGW64*:*)
- echo ${UNAME_MACHINE}-pc-mingw64
- exit ;;
- *:MINGW*:*)
- echo ${UNAME_MACHINE}-pc-mingw32
- exit ;;
- i*:MSYS*:*)
- echo ${UNAME_MACHINE}-pc-msys
- exit ;;
- i*:windows32*:*)
- # uname -m includes "-pc" on this system.
- echo ${UNAME_MACHINE}-mingw32
- exit ;;
- i*:PW*:*)
- echo ${UNAME_MACHINE}-pc-pw32
- exit ;;
- *:Interix*:*)
- case ${UNAME_MACHINE} in
- x86)
- echo i586-pc-interix${UNAME_RELEASE}
- exit ;;
- authenticamd | genuineintel | EM64T)
- echo x86_64-unknown-interix${UNAME_RELEASE}
- exit ;;
- IA64)
- echo ia64-unknown-interix${UNAME_RELEASE}
- exit ;;
- esac ;;
- [345]86:Windows_95:* | [345]86:Windows_98:* | [345]86:Windows_NT:*)
- echo i${UNAME_MACHINE}-pc-mks
- exit ;;
- 8664:Windows_NT:*)
- echo x86_64-pc-mks
- exit ;;
- i*:Windows_NT*:* | Pentium*:Windows_NT*:*)
- # How do we know it's Interix rather than the generic POSIX subsystem?
- # It also conflicts with pre-2.0 versions of AT&T UWIN. Should we
- # UNAME_MACHINE based on the output of uname instead of i386?
- echo i586-pc-interix
- exit ;;
- i*:UWIN*:*)
- echo ${UNAME_MACHINE}-pc-uwin
- exit ;;
- amd64:CYGWIN*:*:* | x86_64:CYGWIN*:*:*)
- echo x86_64-unknown-cygwin
- exit ;;
- p*:CYGWIN*:*)
- echo powerpcle-unknown-cygwin
- exit ;;
- prep*:SunOS:5.*:*)
- echo powerpcle-unknown-solaris2`echo ${UNAME_RELEASE}|sed -e 's/[^.]*//'`
- exit ;;
- *:GNU:*:*)
- # the GNU system
- echo `echo ${UNAME_MACHINE}|sed -e 's,[-/].*$,,'`-unknown-gnu`echo ${UNAME_RELEASE}|sed -e 's,/.*$,,'`
- exit ;;
- *:GNU/*:*:*)
- # other systems with GNU libc and userland
- echo ${UNAME_MACHINE}-unknown-`echo ${UNAME_SYSTEM} | sed 's,^[^/]*/,,' | tr '[A-Z]' '[a-z]'``echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`-gnu
- exit ;;
- i*86:Minix:*:*)
- echo ${UNAME_MACHINE}-pc-minix
- exit ;;
- aarch64:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- aarch64_be:Linux:*:*)
- UNAME_MACHINE=aarch64_be
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- alpha:Linux:*:*)
- case `sed -n '/^cpu model/s/^.*: \(.*\)/\1/p' < /proc/cpuinfo` in
- EV5) UNAME_MACHINE=alphaev5 ;;
- EV56) UNAME_MACHINE=alphaev56 ;;
- PCA56) UNAME_MACHINE=alphapca56 ;;
- PCA57) UNAME_MACHINE=alphapca56 ;;
- EV6) UNAME_MACHINE=alphaev6 ;;
- EV67) UNAME_MACHINE=alphaev67 ;;
- EV68*) UNAME_MACHINE=alphaev68 ;;
- esac
- objdump --private-headers /bin/sh | grep -q ld.so.1
- if test "$?" = 0 ; then LIBC="libc1" ; else LIBC="" ; fi
- echo ${UNAME_MACHINE}-unknown-linux-gnu${LIBC}
- exit ;;
- arm*:Linux:*:*)
- eval $set_cc_for_build
- if echo __ARM_EABI__ | $CC_FOR_BUILD -E - 2>/dev/null \
- | grep -q __ARM_EABI__
- then
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- else
- if echo __ARM_PCS_VFP | $CC_FOR_BUILD -E - 2>/dev/null \
- | grep -q __ARM_PCS_VFP
- then
- echo ${UNAME_MACHINE}-unknown-linux-gnueabi
- else
- echo ${UNAME_MACHINE}-unknown-linux-gnueabihf
- fi
- fi
- exit ;;
- avr32*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- cris:Linux:*:*)
- echo ${UNAME_MACHINE}-axis-linux-gnu
- exit ;;
- crisv32:Linux:*:*)
- echo ${UNAME_MACHINE}-axis-linux-gnu
- exit ;;
- frv:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- hexagon:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- i*86:Linux:*:*)
- LIBC=gnu
- eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
- #ifdef __dietlibc__
- LIBC=dietlibc
- #endif
-EOF
- eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^LIBC'`
- echo "${UNAME_MACHINE}-pc-linux-${LIBC}"
- exit ;;
- ia64:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- m32r*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- m68*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- mips:Linux:*:* | mips64:Linux:*:*)
- eval $set_cc_for_build
- sed 's/^ //' << EOF >$dummy.c
- #undef CPU
- #undef ${UNAME_MACHINE}
- #undef ${UNAME_MACHINE}el
- #if defined(__MIPSEL__) || defined(__MIPSEL) || defined(_MIPSEL) || defined(MIPSEL)
- CPU=${UNAME_MACHINE}el
- #else
- #if defined(__MIPSEB__) || defined(__MIPSEB) || defined(_MIPSEB) || defined(MIPSEB)
- CPU=${UNAME_MACHINE}
- #else
- CPU=
- #endif
- #endif
-EOF
- eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
- test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
- ;;
- or32:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- padre:Linux:*:*)
- echo sparc-unknown-linux-gnu
- exit ;;
- parisc64:Linux:*:* | hppa64:Linux:*:*)
- echo hppa64-unknown-linux-gnu
- exit ;;
- parisc:Linux:*:* | hppa:Linux:*:*)
- # Look for CPU level
- case `grep '^cpu[^a-z]*:' /proc/cpuinfo 2>/dev/null | cut -d' ' -f2` in
- PA7*) echo hppa1.1-unknown-linux-gnu ;;
- PA8*) echo hppa2.0-unknown-linux-gnu ;;
- *) echo hppa-unknown-linux-gnu ;;
- esac
- exit ;;
- ppc64:Linux:*:*)
- echo powerpc64-unknown-linux-gnu
- exit ;;
- ppc:Linux:*:*)
- echo powerpc-unknown-linux-gnu
- exit ;;
- s390:Linux:*:* | s390x:Linux:*:*)
- echo ${UNAME_MACHINE}-ibm-linux
- exit ;;
- sh64*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- sh*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- sparc:Linux:*:* | sparc64:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- tile*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- vax:Linux:*:*)
- echo ${UNAME_MACHINE}-dec-linux-gnu
- exit ;;
- x86_64:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- xtensa*:Linux:*:*)
- echo ${UNAME_MACHINE}-unknown-linux-gnu
- exit ;;
- i*86:DYNIX/ptx:4*:*)
- # ptx 4.0 does uname -s correctly, with DYNIX/ptx in there.
- # earlier versions are messed up and put the nodename in both
- # sysname and nodename.
- echo i386-sequent-sysv4
- exit ;;
- i*86:UNIX_SV:4.2MP:2.*)
- # Unixware is an offshoot of SVR4, but it has its own version
- # number series starting with 2...
- # I am not positive that other SVR4 systems won't match this,
- # I just have to hope. -- rms.
- # Use sysv4.2uw... so that sysv4* matches it.
- echo ${UNAME_MACHINE}-pc-sysv4.2uw${UNAME_VERSION}
- exit ;;
- i*86:OS/2:*:*)
- # If we were able to find `uname', then EMX Unix compatibility
- # is probably installed.
- echo ${UNAME_MACHINE}-pc-os2-emx
- exit ;;
- i*86:XTS-300:*:STOP)
- echo ${UNAME_MACHINE}-unknown-stop
- exit ;;
- i*86:atheos:*:*)
- echo ${UNAME_MACHINE}-unknown-atheos
- exit ;;
- i*86:syllable:*:*)
- echo ${UNAME_MACHINE}-pc-syllable
- exit ;;
- i*86:LynxOS:2.*:* | i*86:LynxOS:3.[01]*:* | i*86:LynxOS:4.[02]*:*)
- echo i386-unknown-lynxos${UNAME_RELEASE}
- exit ;;
- i*86:*DOS:*:*)
- echo ${UNAME_MACHINE}-pc-msdosdjgpp
- exit ;;
- i*86:*:4.*:* | i*86:SYSTEM_V:4.*:*)
- UNAME_REL=`echo ${UNAME_RELEASE} | sed 's/\/MP$//'`
- if grep Novell /usr/include/link.h >/dev/null 2>/dev/null; then
- echo ${UNAME_MACHINE}-univel-sysv${UNAME_REL}
- else
- echo ${UNAME_MACHINE}-pc-sysv${UNAME_REL}
- fi
- exit ;;
- i*86:*:5:[678]*)
- # UnixWare 7.x, OpenUNIX and OpenServer 6.
- case `/bin/uname -X | grep "^Machine"` in
- *486*) UNAME_MACHINE=i486 ;;
- *Pentium) UNAME_MACHINE=i586 ;;
- *Pent*|*Celeron) UNAME_MACHINE=i686 ;;
- esac
- echo ${UNAME_MACHINE}-unknown-sysv${UNAME_RELEASE}${UNAME_SYSTEM}${UNAME_VERSION}
- exit ;;
- i*86:*:3.2:*)
- if test -f /usr/options/cb.name; then
- UNAME_REL=`sed -n 's/.*Version //p' </usr/options/cb.name`
- echo ${UNAME_MACHINE}-pc-isc$UNAME_REL
- elif /bin/uname -X 2>/dev/null >/dev/null ; then
- UNAME_REL=`(/bin/uname -X|grep Release|sed -e 's/.*= //')`
- (/bin/uname -X|grep i80486 >/dev/null) && UNAME_MACHINE=i486
- (/bin/uname -X|grep '^Machine.*Pentium' >/dev/null) \
- && UNAME_MACHINE=i586
- (/bin/uname -X|grep '^Machine.*Pent *II' >/dev/null) \
- && UNAME_MACHINE=i686
- (/bin/uname -X|grep '^Machine.*Pentium Pro' >/dev/null) \
- && UNAME_MACHINE=i686
- echo ${UNAME_MACHINE}-pc-sco$UNAME_REL
- else
- echo ${UNAME_MACHINE}-pc-sysv32
- fi
- exit ;;
- pc:*:*:*)
- # Left here for compatibility:
- # uname -m prints for DJGPP always 'pc', but it prints nothing about
- # the processor, so we play safe by assuming i586.
- # Note: whatever this is, it MUST be the same as what config.sub
- # prints for the "djgpp" host, or else GDB configury will decide that
- # this is a cross-build.
- echo i586-pc-msdosdjgpp
- exit ;;
- Intel:Mach:3*:*)
- echo i386-pc-mach3
- exit ;;
- paragon:*:*:*)
- echo i860-intel-osf1
- exit ;;
- i860:*:4.*:*) # i860-SVR4
- if grep Stardent /usr/include/sys/uadmin.h >/dev/null 2>&1 ; then
- echo i860-stardent-sysv${UNAME_RELEASE} # Stardent Vistra i860-SVR4
- else # Add other i860-SVR4 vendors below as they are discovered.
- echo i860-unknown-sysv${UNAME_RELEASE} # Unknown i860-SVR4
- fi
- exit ;;
- mini*:CTIX:SYS*5:*)
- # "miniframe"
- echo m68010-convergent-sysv
- exit ;;
- mc68k:UNIX:SYSTEM5:3.51m)
- echo m68k-convergent-sysv
- exit ;;
- M680?0:D-NIX:5.3:*)
- echo m68k-diab-dnix
- exit ;;
- M68*:*:R3V[5678]*:*)
- test -r /sysV68 && { echo 'm68k-motorola-sysv'; exit; } ;;
- 3[345]??:*:4.0:3.0 | 3[34]??A:*:4.0:3.0 | 3[34]??,*:*:4.0:3.0 | 3[34]??/*:*:4.0:3.0 | 4400:*:4.0:3.0 | 4850:*:4.0:3.0 | SKA40:*:4.0:3.0 | SDS2:*:4.0:3.0 | SHG2:*:4.0:3.0 | S7501*:*:4.0:3.0)
- OS_REL=''
- test -r /etc/.relid \
- && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
- /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
- && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
- /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
- && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
- 3[34]??:*:4.0:* | 3[34]??,*:*:4.0:*)
- /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
- && { echo i486-ncr-sysv4; exit; } ;;
- NCR*:*:4.2:* | MPRAS*:*:4.2:*)
- OS_REL='.3'
- test -r /etc/.relid \
- && OS_REL=.`sed -n 's/[^ ]* [^ ]* \([0-9][0-9]\).*/\1/p' < /etc/.relid`
- /bin/uname -p 2>/dev/null | grep 86 >/dev/null \
- && { echo i486-ncr-sysv4.3${OS_REL}; exit; }
- /bin/uname -p 2>/dev/null | /bin/grep entium >/dev/null \
- && { echo i586-ncr-sysv4.3${OS_REL}; exit; }
- /bin/uname -p 2>/dev/null | /bin/grep pteron >/dev/null \
- && { echo i586-ncr-sysv4.3${OS_REL}; exit; } ;;
- m68*:LynxOS:2.*:* | m68*:LynxOS:3.0*:*)
- echo m68k-unknown-lynxos${UNAME_RELEASE}
- exit ;;
- mc68030:UNIX_System_V:4.*:*)
- echo m68k-atari-sysv4
- exit ;;
- TSUNAMI:LynxOS:2.*:*)
- echo sparc-unknown-lynxos${UNAME_RELEASE}
- exit ;;
- rs6000:LynxOS:2.*:*)
- echo rs6000-unknown-lynxos${UNAME_RELEASE}
- exit ;;
- PowerPC:LynxOS:2.*:* | PowerPC:LynxOS:3.[01]*:* | PowerPC:LynxOS:4.[02]*:*)
- echo powerpc-unknown-lynxos${UNAME_RELEASE}
- exit ;;
- SM[BE]S:UNIX_SV:*:*)
- echo mips-dde-sysv${UNAME_RELEASE}
- exit ;;
- RM*:ReliantUNIX-*:*:*)
- echo mips-sni-sysv4
- exit ;;
- RM*:SINIX-*:*:*)
- echo mips-sni-sysv4
- exit ;;
- *:SINIX-*:*:*)
- if uname -p 2>/dev/null >/dev/null ; then
- UNAME_MACHINE=`(uname -p) 2>/dev/null`
- echo ${UNAME_MACHINE}-sni-sysv4
- else
- echo ns32k-sni-sysv
- fi
- exit ;;
- PENTIUM:*:4.0*:*) # Unisys `ClearPath HMP IX 4000' SVR4/MP effort
- # says <Richard.M.Bartel@ccMail.Census.GOV>
- echo i586-unisys-sysv4
- exit ;;
- *:UNIX_System_V:4*:FTX*)
- # From Gerald Hewes <hewes@openmarket.com>.
- # How about differentiating between stratus architectures? -djm
- echo hppa1.1-stratus-sysv4
- exit ;;
- *:*:*:FTX*)
- # From seanf@swdc.stratus.com.
- echo i860-stratus-sysv4
- exit ;;
- i*86:VOS:*:*)
- # From Paul.Green@stratus.com.
- echo ${UNAME_MACHINE}-stratus-vos
- exit ;;
- *:VOS:*:*)
- # From Paul.Green@stratus.com.
- echo hppa1.1-stratus-vos
- exit ;;
- mc68*:A/UX:*:*)
- echo m68k-apple-aux${UNAME_RELEASE}
- exit ;;
- news*:NEWS-OS:6*:*)
- echo mips-sony-newsos6
- exit ;;
- R[34]000:*System_V*:*:* | R4000:UNIX_SYSV:*:* | R*000:UNIX_SV:*:*)
- if [ -d /usr/nec ]; then
- echo mips-nec-sysv${UNAME_RELEASE}
- else
- echo mips-unknown-sysv${UNAME_RELEASE}
- fi
- exit ;;
- BeBox:BeOS:*:*) # BeOS running on hardware made by Be, PPC only.
- echo powerpc-be-beos
- exit ;;
- BeMac:BeOS:*:*) # BeOS running on Mac or Mac clone, PPC only.
- echo powerpc-apple-beos
- exit ;;
- BePC:BeOS:*:*) # BeOS running on Intel PC compatible.
- echo i586-pc-beos
- exit ;;
- BePC:Haiku:*:*) # Haiku running on Intel PC compatible.
- echo i586-pc-haiku
- exit ;;
- x86_64:Haiku:*:*)
- echo x86_64-unknown-haiku
- exit ;;
- SX-4:SUPER-UX:*:*)
- echo sx4-nec-superux${UNAME_RELEASE}
- exit ;;
- SX-5:SUPER-UX:*:*)
- echo sx5-nec-superux${UNAME_RELEASE}
- exit ;;
- SX-6:SUPER-UX:*:*)
- echo sx6-nec-superux${UNAME_RELEASE}
- exit ;;
- SX-7:SUPER-UX:*:*)
- echo sx7-nec-superux${UNAME_RELEASE}
- exit ;;
- SX-8:SUPER-UX:*:*)
- echo sx8-nec-superux${UNAME_RELEASE}
- exit ;;
- SX-8R:SUPER-UX:*:*)
- echo sx8r-nec-superux${UNAME_RELEASE}
- exit ;;
- Power*:Rhapsody:*:*)
- echo powerpc-apple-rhapsody${UNAME_RELEASE}
- exit ;;
- *:Rhapsody:*:*)
- echo ${UNAME_MACHINE}-apple-rhapsody${UNAME_RELEASE}
- exit ;;
- *:Darwin:*:*)
- UNAME_PROCESSOR=`uname -p` || UNAME_PROCESSOR=unknown
- case $UNAME_PROCESSOR in
- i386)
- eval $set_cc_for_build
- if [ "$CC_FOR_BUILD" != 'no_compiler_found' ]; then
- if (echo '#ifdef __LP64__'; echo IS_64BIT_ARCH; echo '#endif') | \
- (CCOPTS= $CC_FOR_BUILD -E - 2>/dev/null) | \
- grep IS_64BIT_ARCH >/dev/null
- then
- UNAME_PROCESSOR="x86_64"
- fi
- fi ;;
- unknown) UNAME_PROCESSOR=powerpc ;;
- esac
- echo ${UNAME_PROCESSOR}-apple-darwin${UNAME_RELEASE}
- exit ;;
- *:procnto*:*:* | *:QNX:[0123456789]*:*)
- UNAME_PROCESSOR=`uname -p`
- if test "$UNAME_PROCESSOR" = "x86"; then
- UNAME_PROCESSOR=i386
- UNAME_MACHINE=pc
- fi
- echo ${UNAME_PROCESSOR}-${UNAME_MACHINE}-nto-qnx${UNAME_RELEASE}
- exit ;;
- *:QNX:*:4*)
- echo i386-pc-qnx
- exit ;;
- NEO-?:NONSTOP_KERNEL:*:*)
- echo neo-tandem-nsk${UNAME_RELEASE}
- exit ;;
- NSE-*:NONSTOP_KERNEL:*:*)
- echo nse-tandem-nsk${UNAME_RELEASE}
- exit ;;
- NSR-?:NONSTOP_KERNEL:*:*)
- echo nsr-tandem-nsk${UNAME_RELEASE}
- exit ;;
- *:NonStop-UX:*:*)
- echo mips-compaq-nonstopux
- exit ;;
- BS2000:POSIX*:*:*)
- echo bs2000-siemens-sysv
- exit ;;
- DS/*:UNIX_System_V:*:*)
- echo ${UNAME_MACHINE}-${UNAME_SYSTEM}-${UNAME_RELEASE}
- exit ;;
- *:Plan9:*:*)
- # "uname -m" is not consistent, so use $cputype instead. 386
- # is converted to i386 for consistency with other x86
- # operating systems.
- if test "$cputype" = "386"; then
- UNAME_MACHINE=i386
- else
- UNAME_MACHINE="$cputype"
- fi
- echo ${UNAME_MACHINE}-unknown-plan9
- exit ;;
- *:TOPS-10:*:*)
- echo pdp10-unknown-tops10
- exit ;;
- *:TENEX:*:*)
- echo pdp10-unknown-tenex
- exit ;;
- KS10:TOPS-20:*:* | KL10:TOPS-20:*:* | TYPE4:TOPS-20:*:*)
- echo pdp10-dec-tops20
- exit ;;
- XKL-1:TOPS-20:*:* | TYPE5:TOPS-20:*:*)
- echo pdp10-xkl-tops20
- exit ;;
- *:TOPS-20:*:*)
- echo pdp10-unknown-tops20
- exit ;;
- *:ITS:*:*)
- echo pdp10-unknown-its
- exit ;;
- SEI:*:*:SEIUX)
- echo mips-sei-seiux${UNAME_RELEASE}
- exit ;;
- *:DragonFly:*:*)
- echo ${UNAME_MACHINE}-unknown-dragonfly`echo ${UNAME_RELEASE}|sed -e 's/[-(].*//'`
- exit ;;
- *:*VMS:*:*)
- UNAME_MACHINE=`(uname -p) 2>/dev/null`
- case "${UNAME_MACHINE}" in
- A*) echo alpha-dec-vms ; exit ;;
- I*) echo ia64-dec-vms ; exit ;;
- V*) echo vax-dec-vms ; exit ;;
- esac ;;
- *:XENIX:*:SysV)
- echo i386-pc-xenix
- exit ;;
- i*86:skyos:*:*)
- echo ${UNAME_MACHINE}-pc-skyos`echo ${UNAME_RELEASE}` | sed -e 's/ .*$//'
- exit ;;
- i*86:rdos:*:*)
- echo ${UNAME_MACHINE}-pc-rdos
- exit ;;
- i*86:AROS:*:*)
- echo ${UNAME_MACHINE}-pc-aros
- exit ;;
- x86_64:VMkernel:*:*)
- echo ${UNAME_MACHINE}-unknown-esx
- exit ;;
-esac
-
-eval $set_cc_for_build
-cat >$dummy.c <<EOF
-#ifdef _SEQUENT_
-# include <sys/types.h>
-# include <sys/utsname.h>
-#endif
-main ()
-{
-#if defined (sony)
-#if defined (MIPSEB)
- /* BFD wants "bsd" instead of "newsos". Perhaps BFD should be changed,
- I don't know.... */
- printf ("mips-sony-bsd\n"); exit (0);
-#else
-#include <sys/param.h>
- printf ("m68k-sony-newsos%s\n",
-#ifdef NEWSOS4
- "4"
-#else
- ""
-#endif
- ); exit (0);
-#endif
-#endif
-
-#if defined (__arm) && defined (__acorn) && defined (__unix)
- printf ("arm-acorn-riscix\n"); exit (0);
-#endif
-
-#if defined (hp300) && !defined (hpux)
- printf ("m68k-hp-bsd\n"); exit (0);
-#endif
-
-#if defined (NeXT)
-#if !defined (__ARCHITECTURE__)
-#define __ARCHITECTURE__ "m68k"
-#endif
- int version;
- version=`(hostinfo | sed -n 's/.*NeXT Mach \([0-9]*\).*/\1/p') 2>/dev/null`;
- if (version < 4)
- printf ("%s-next-nextstep%d\n", __ARCHITECTURE__, version);
- else
- printf ("%s-next-openstep%d\n", __ARCHITECTURE__, version);
- exit (0);
-#endif
-
-#if defined (MULTIMAX) || defined (n16)
-#if defined (UMAXV)
- printf ("ns32k-encore-sysv\n"); exit (0);
-#else
-#if defined (CMU)
- printf ("ns32k-encore-mach\n"); exit (0);
-#else
- printf ("ns32k-encore-bsd\n"); exit (0);
-#endif
-#endif
-#endif
-
-#if defined (__386BSD__)
- printf ("i386-pc-bsd\n"); exit (0);
-#endif
-
-#if defined (sequent)
-#if defined (i386)
- printf ("i386-sequent-dynix\n"); exit (0);
-#endif
-#if defined (ns32000)
- printf ("ns32k-sequent-dynix\n"); exit (0);
-#endif
-#endif
-
-#if defined (_SEQUENT_)
- struct utsname un;
-
- uname(&un);
-
- if (strncmp(un.version, "V2", 2) == 0) {
- printf ("i386-sequent-ptx2\n"); exit (0);
- }
- if (strncmp(un.version, "V1", 2) == 0) { /* XXX is V1 correct? */
- printf ("i386-sequent-ptx1\n"); exit (0);
- }
- printf ("i386-sequent-ptx\n"); exit (0);
-
-#endif
-
-#if defined (vax)
-# if !defined (ultrix)
-# include <sys/param.h>
-# if defined (BSD)
-# if BSD == 43
- printf ("vax-dec-bsd4.3\n"); exit (0);
-# else
-# if BSD == 199006
- printf ("vax-dec-bsd4.3reno\n"); exit (0);
-# else
- printf ("vax-dec-bsd\n"); exit (0);
-# endif
-# endif
-# else
- printf ("vax-dec-bsd\n"); exit (0);
-# endif
-# else
- printf ("vax-dec-ultrix\n"); exit (0);
-# endif
-#endif
-
-#if defined (alliant) && defined (i860)
- printf ("i860-alliant-bsd\n"); exit (0);
-#endif
-
- exit (1);
-}
-EOF
-
-$CC_FOR_BUILD -o $dummy $dummy.c 2>/dev/null && SYSTEM_NAME=`$dummy` &&
- { echo "$SYSTEM_NAME"; exit; }
-
-# Apollos put the system type in the environment.
-
-test -d /usr/apollo && { echo ${ISP}-apollo-${SYSTYPE}; exit; }
-
-# Convex versions that predate uname can use getsysinfo(1)
-
-if [ -x /usr/convex/getsysinfo ]
-then
- case `getsysinfo -f cpu_type` in
- c1*)
- echo c1-convex-bsd
- exit ;;
- c2*)
- if getsysinfo -f scalar_acc
- then echo c32-convex-bsd
- else echo c2-convex-bsd
- fi
- exit ;;
- c34*)
- echo c34-convex-bsd
- exit ;;
- c38*)
- echo c38-convex-bsd
- exit ;;
- c4*)
- echo c4-convex-bsd
- exit ;;
- esac
-fi
-
-cat >&2 <<EOF
-$0: unable to guess system type
-
-This script, last modified $timestamp, has failed to recognize
-the operating system you are using. It is advised that you
-download the most up to date version of the config scripts from
-
- http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
-and
- http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
-
-If the version you run ($0) is already up to date, please
-send the following data and any information you think might be
-pertinent to <config-patches@gnu.org> in order to provide the needed
-information to handle your system.
-
-config.guess timestamp = $timestamp
-
-uname -m = `(uname -m) 2>/dev/null || echo unknown`
-uname -r = `(uname -r) 2>/dev/null || echo unknown`
-uname -s = `(uname -s) 2>/dev/null || echo unknown`
-uname -v = `(uname -v) 2>/dev/null || echo unknown`
-
-/usr/bin/uname -p = `(/usr/bin/uname -p) 2>/dev/null`
-/bin/uname -X = `(/bin/uname -X) 2>/dev/null`
-
-hostinfo = `(hostinfo) 2>/dev/null`
-/bin/universe = `(/bin/universe) 2>/dev/null`
-/usr/bin/arch -k = `(/usr/bin/arch -k) 2>/dev/null`
-/bin/arch = `(/bin/arch) 2>/dev/null`
-/usr/bin/oslevel = `(/usr/bin/oslevel) 2>/dev/null`
-/usr/convex/getsysinfo = `(/usr/convex/getsysinfo) 2>/dev/null`
-
-UNAME_MACHINE = ${UNAME_MACHINE}
-UNAME_RELEASE = ${UNAME_RELEASE}
-UNAME_SYSTEM = ${UNAME_SYSTEM}
-UNAME_VERSION = ${UNAME_VERSION}
-EOF
-
-exit 1
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "timestamp='"
-# time-stamp-format: "%:y-%02m-%02d"
-# time-stamp-end: "'"
-# End:
+++ /dev/null
-/* config.h.in. Generated from configure.ac by autoheader. */
-
-/* Define to 1 if you have the <dlfcn.h> header file. */
-#undef HAVE_DLFCN_H
-
-/* Define to 1 if you have the `feenableexcept' function. */
-#undef HAVE_FEENABLEEXCEPT
-
-/* Define to 1 if you have the <inttypes.h> header file. */
-#undef HAVE_INTTYPES_H
-
-/* Define to 1 if you have the `m' library (-lm). */
-#undef HAVE_LIBM
-
-/* Define to 1 if you have the `z' library (-lz). */
-#undef HAVE_LIBZ
-
-/* Define to 1 if you have the <memory.h> header file. */
-#undef HAVE_MEMORY_H
-
-/* Define to 1 if you have the `memset' function. */
-#undef HAVE_MEMSET
-
-/* Define to 1 if you have the `pow' function. */
-#undef HAVE_POW
-
-/* Define to 1 if you have the <stdint.h> header file. */
-#undef HAVE_STDINT_H
-
-/* Define to 1 if you have the <stdlib.h> header file. */
-#undef HAVE_STDLIB_H
-
-/* Define to 1 if you have the <strings.h> header file. */
-#undef HAVE_STRINGS_H
-
-/* Define to 1 if you have the <string.h> header file. */
-#undef HAVE_STRING_H
-
-/* Define to 1 if you have the <sys/stat.h> header file. */
-#undef HAVE_SYS_STAT_H
-
-/* Define to 1 if you have the <sys/types.h> header file. */
-#undef HAVE_SYS_TYPES_H
-
-/* Define to 1 if you have the <unistd.h> header file. */
-#undef HAVE_UNISTD_H
-
-/* Define to the sub-directory in which libtool stores uninstalled libraries.
- */
-#undef LT_OBJDIR
-
-/* Name of package */
-#undef PACKAGE
-
-/* Define to the address where bug reports for this package should be sent. */
-#undef PACKAGE_BUGREPORT
-
-/* Define to the full name of this package. */
-#undef PACKAGE_NAME
-
-/* Define to the full name and version of this package. */
-#undef PACKAGE_STRING
-
-/* Define to the one symbol short name of this package. */
-#undef PACKAGE_TARNAME
-
-/* Define to the home page for this package. */
-#undef PACKAGE_URL
-
-/* Define to the version of this package. */
-#undef PACKAGE_VERSION
-
-/* Turn on ARM Neon optimizations at run-time */
-#undef PNG_ARM_NEON_API_SUPPORTED
-
-/* Check for ARM Neon support at run-time */
-#undef PNG_ARM_NEON_CHECK_SUPPORTED
-
-/* Enable ARM Neon optimizations */
-#undef PNG_ARM_NEON_OPT
-
-/* Define to 1 if you have the ANSI C header files. */
-#undef STDC_HEADERS
-
-/* Define to 1 if your <sys/time.h> declares `struct tm'. */
-#undef TM_IN_SYS_TIME
-
-/* Version number of package */
-#undef VERSION
-
-/* Define to empty if `const' does not conform to ANSI C. */
-#undef const
-
-/* Define to the equivalent of the C99 'restrict' keyword, or to
- nothing if this is not supported. Do not define if restrict is
- supported directly. */
-#undef restrict
-/* Work around a bug in Sun C++: it does not support _Restrict or
- __restrict__, even though the corresponding Sun C compiler ends up with
- "#define restrict _Restrict" or "#define restrict __restrict__" in the
- previous line. Perhaps some future version of Sun C++ will work with
- restrict; if so, hopefully it defines __RESTRICT like Sun C does. */
-#if defined __SUNPRO_CC && !defined __RESTRICT
-# define _Restrict
-# define __restrict__
-#endif
-
-/* Define to `unsigned int' if <sys/types.h> does not define. */
-#undef size_t
+++ /dev/null
-#! /bin/sh
-# Configuration validation subroutine script.
-# Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999,
-# 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010,
-# 2011, 2012 Free Software Foundation, Inc.
-
-timestamp='2012-12-06'
-
-# This file is (in principle) common to ALL GNU software.
-# The presence of a machine in this file suggests that SOME GNU software
-# can handle that machine. It does not imply ALL GNU software can.
-#
-# This file is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program; if not, see <http://www.gnu.org/licenses/>.
-#
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-
-# Please send patches to <config-patches@gnu.org>. Submit a context
-# diff and a properly formatted GNU ChangeLog entry.
-#
-# Configuration subroutine to validate and canonicalize a configuration type.
-# Supply the specified configuration type as an argument.
-# If it is invalid, we print an error message on stderr and exit with code 1.
-# Otherwise, we print the canonical config type on stdout and succeed.
-
-# You can get the latest version of this script from:
-# http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
-
-# This file is supposed to be the same for all GNU packages
-# and recognize all the CPU types, system types and aliases
-# that are meaningful with *any* GNU software.
-# Each package is responsible for reporting which valid configurations
-# it does not support. The user should be able to distinguish
-# a failure to support a valid configuration from a meaningless
-# configuration.
-
-# The goal of this file is to map all the various variations of a given
-# machine specification into a single specification in the form:
-# CPU_TYPE-MANUFACTURER-OPERATING_SYSTEM
-# or in some cases, the newer four-part form:
-# CPU_TYPE-MANUFACTURER-KERNEL-OPERATING_SYSTEM
-# It is wrong to echo any other type of specification.
-
-me=`echo "$0" | sed -e 's,.*/,,'`
-
-usage="\
-Usage: $0 [OPTION] CPU-MFR-OPSYS
- $0 [OPTION] ALIAS
-
-Canonicalize a configuration name.
-
-Operation modes:
- -h, --help print this help, then exit
- -t, --time-stamp print date of last modification, then exit
- -v, --version print version number, then exit
-
-Report bugs and patches to <config-patches@gnu.org>."
-
-version="\
-GNU config.sub ($timestamp)
-
-Copyright (C) 1992, 1993, 1994, 1995, 1996, 1997, 1998, 1999, 2000,
-2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012
-Free Software Foundation, Inc.
-
-This is free software; see the source for copying conditions. There is NO
-warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE."
-
-help="
-Try \`$me --help' for more information."
-
-# Parse command line
-while test $# -gt 0 ; do
- case $1 in
- --time-stamp | --time* | -t )
- echo "$timestamp" ; exit ;;
- --version | -v )
- echo "$version" ; exit ;;
- --help | --h* | -h )
- echo "$usage"; exit ;;
- -- ) # Stop option processing
- shift; break ;;
- - ) # Use stdin as input.
- break ;;
- -* )
- echo "$me: invalid option $1$help"
- exit 1 ;;
-
- *local*)
- # First pass through any local machine types.
- echo $1
- exit ;;
-
- * )
- break ;;
- esac
-done
-
-case $# in
- 0) echo "$me: missing argument$help" >&2
- exit 1;;
- 1) ;;
- *) echo "$me: too many arguments$help" >&2
- exit 1;;
-esac
-
-# Separate what the user gave into CPU-COMPANY and OS or KERNEL-OS (if any).
-# Here we must recognize all the valid KERNEL-OS combinations.
-maybe_os=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\2/'`
-case $maybe_os in
- nto-qnx* | linux-gnu* | linux-android* | linux-dietlibc | linux-newlib* | \
- linux-musl* | linux-uclibc* | uclinux-uclibc* | uclinux-gnu* | kfreebsd*-gnu* | \
- knetbsd*-gnu* | netbsd*-gnu* | \
- kopensolaris*-gnu* | \
- storm-chaos* | os2-emx* | rtmk-nova*)
- os=-$maybe_os
- basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`
- ;;
- android-linux)
- os=-linux-android
- basic_machine=`echo $1 | sed 's/^\(.*\)-\([^-]*-[^-]*\)$/\1/'`-unknown
- ;;
- *)
- basic_machine=`echo $1 | sed 's/-[^-]*$//'`
- if [ $basic_machine != $1 ]
- then os=`echo $1 | sed 's/.*-/-/'`
- else os=; fi
- ;;
-esac
-
-### Let's recognize common machines as not being operating systems so
-### that things like config.sub decstation-3100 work. We also
-### recognize some manufacturers as not being operating systems, so we
-### can provide default operating systems below.
-case $os in
- -sun*os*)
- # Prevent following clause from handling this invalid input.
- ;;
- -dec* | -mips* | -sequent* | -encore* | -pc532* | -sgi* | -sony* | \
- -att* | -7300* | -3300* | -delta* | -motorola* | -sun[234]* | \
- -unicom* | -ibm* | -next | -hp | -isi* | -apollo | -altos* | \
- -convergent* | -ncr* | -news | -32* | -3600* | -3100* | -hitachi* |\
- -c[123]* | -convex* | -sun | -crds | -omron* | -dg | -ultra | -tti* | \
- -harris | -dolphin | -highlevel | -gould | -cbm | -ns | -masscomp | \
- -apple | -axis | -knuth | -cray | -microblaze*)
- os=
- basic_machine=$1
- ;;
- -bluegene*)
- os=-cnk
- ;;
- -sim | -cisco | -oki | -wec | -winbond)
- os=
- basic_machine=$1
- ;;
- -scout)
- ;;
- -wrs)
- os=-vxworks
- basic_machine=$1
- ;;
- -chorusos*)
- os=-chorusos
- basic_machine=$1
- ;;
- -chorusrdb)
- os=-chorusrdb
- basic_machine=$1
- ;;
- -hiux*)
- os=-hiuxwe2
- ;;
- -sco6)
- os=-sco5v6
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -sco5)
- os=-sco3.2v5
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -sco4)
- os=-sco3.2v4
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -sco3.2.[4-9]*)
- os=`echo $os | sed -e 's/sco3.2./sco3.2v/'`
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -sco3.2v[4-9]*)
- # Don't forget version if it is 3.2v4 or newer.
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -sco5v6*)
- # Don't forget version if it is 3.2v4 or newer.
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -sco*)
- os=-sco3.2v2
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -udk*)
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -isc)
- os=-isc2.2
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -clix*)
- basic_machine=clipper-intergraph
- ;;
- -isc*)
- basic_machine=`echo $1 | sed -e 's/86-.*/86-pc/'`
- ;;
- -lynx*178)
- os=-lynxos178
- ;;
- -lynx*5)
- os=-lynxos5
- ;;
- -lynx*)
- os=-lynxos
- ;;
- -ptx*)
- basic_machine=`echo $1 | sed -e 's/86-.*/86-sequent/'`
- ;;
- -windowsnt*)
- os=`echo $os | sed -e 's/windowsnt/winnt/'`
- ;;
- -psos*)
- os=-psos
- ;;
- -mint | -mint[0-9]*)
- basic_machine=m68k-atari
- os=-mint
- ;;
-esac
-
-# Decode aliases for certain CPU-COMPANY combinations.
-case $basic_machine in
- # Recognize the basic CPU types without company name.
- # Some are omitted here because they have special meanings below.
- 1750a | 580 \
- | a29k \
- | aarch64 | aarch64_be \
- | alpha | alphaev[4-8] | alphaev56 | alphaev6[78] | alphapca5[67] \
- | alpha64 | alpha64ev[4-8] | alpha64ev56 | alpha64ev6[78] | alpha64pca5[67] \
- | am33_2.0 \
- | arc \
- | arm | arm[bl]e | arme[lb] | armv[2-8] | armv[3-8][lb] | armv7[arm] \
- | avr | avr32 \
- | be32 | be64 \
- | bfin \
- | c4x | clipper \
- | d10v | d30v | dlx | dsp16xx \
- | epiphany \
- | fido | fr30 | frv \
- | h8300 | h8500 | hppa | hppa1.[01] | hppa2.0 | hppa2.0[nw] | hppa64 \
- | hexagon \
- | i370 | i860 | i960 | ia64 \
- | ip2k | iq2000 \
- | le32 | le64 \
- | lm32 \
- | m32c | m32r | m32rle | m68000 | m68k | m88k \
- | maxq | mb | microblaze | microblazeel | mcore | mep | metag \
- | mips | mipsbe | mipseb | mipsel | mipsle \
- | mips16 \
- | mips64 | mips64el \
- | mips64octeon | mips64octeonel \
- | mips64orion | mips64orionel \
- | mips64r5900 | mips64r5900el \
- | mips64vr | mips64vrel \
- | mips64vr4100 | mips64vr4100el \
- | mips64vr4300 | mips64vr4300el \
- | mips64vr5000 | mips64vr5000el \
- | mips64vr5900 | mips64vr5900el \
- | mipsisa32 | mipsisa32el \
- | mipsisa32r2 | mipsisa32r2el \
- | mipsisa64 | mipsisa64el \
- | mipsisa64r2 | mipsisa64r2el \
- | mipsisa64sb1 | mipsisa64sb1el \
- | mipsisa64sr71k | mipsisa64sr71kel \
- | mipstx39 | mipstx39el \
- | mn10200 | mn10300 \
- | moxie \
- | mt \
- | msp430 \
- | nds32 | nds32le | nds32be \
- | nios | nios2 \
- | ns16k | ns32k \
- | open8 \
- | or32 \
- | pdp10 | pdp11 | pj | pjl \
- | powerpc | powerpc64 | powerpc64le | powerpcle \
- | pyramid \
- | rl78 | rx \
- | score \
- | sh | sh[1234] | sh[24]a | sh[24]aeb | sh[23]e | sh[34]eb | sheb | shbe | shle | sh[1234]le | sh3ele \
- | sh64 | sh64le \
- | sparc | sparc64 | sparc64b | sparc64v | sparc86x | sparclet | sparclite \
- | sparcv8 | sparcv9 | sparcv9b | sparcv9v \
- | spu \
- | tahoe | tic4x | tic54x | tic55x | tic6x | tic80 | tron \
- | ubicom32 \
- | v850 | v850e | v850e1 | v850e2 | v850es | v850e2v3 \
- | we32k \
- | x86 | xc16x | xstormy16 | xtensa \
- | z8k | z80)
- basic_machine=$basic_machine-unknown
- ;;
- c54x)
- basic_machine=tic54x-unknown
- ;;
- c55x)
- basic_machine=tic55x-unknown
- ;;
- c6x)
- basic_machine=tic6x-unknown
- ;;
- m6811 | m68hc11 | m6812 | m68hc12 | m68hcs12x | picochip)
- basic_machine=$basic_machine-unknown
- os=-none
- ;;
- m88110 | m680[12346]0 | m683?2 | m68360 | m5200 | v70 | w65 | z8k)
- ;;
- ms1)
- basic_machine=mt-unknown
- ;;
-
- strongarm | thumb | xscale)
- basic_machine=arm-unknown
- ;;
- xgate)
- basic_machine=$basic_machine-unknown
- os=-none
- ;;
- xscaleeb)
- basic_machine=armeb-unknown
- ;;
-
- xscaleel)
- basic_machine=armel-unknown
- ;;
-
- # We use `pc' rather than `unknown'
- # because (1) that's what they normally are, and
- # (2) the word "unknown" tends to confuse beginning users.
- i*86 | x86_64)
- basic_machine=$basic_machine-pc
- ;;
- # Object if more than one company name word.
- *-*-*)
- echo Invalid configuration \`$1\': machine \`$basic_machine\' not recognized 1>&2
- exit 1
- ;;
- # Recognize the basic CPU types with company name.
- 580-* \
- | a29k-* \
- | aarch64-* | aarch64_be-* \
- | alpha-* | alphaev[4-8]-* | alphaev56-* | alphaev6[78]-* \
- | alpha64-* | alpha64ev[4-8]-* | alpha64ev56-* | alpha64ev6[78]-* \
- | alphapca5[67]-* | alpha64pca5[67]-* | arc-* \
- | arm-* | armbe-* | armle-* | armeb-* | armv*-* \
- | avr-* | avr32-* \
- | be32-* | be64-* \
- | bfin-* | bs2000-* \
- | c[123]* | c30-* | [cjt]90-* | c4x-* \
- | clipper-* | craynv-* | cydra-* \
- | d10v-* | d30v-* | dlx-* \
- | elxsi-* \
- | f30[01]-* | f700-* | fido-* | fr30-* | frv-* | fx80-* \
- | h8300-* | h8500-* \
- | hppa-* | hppa1.[01]-* | hppa2.0-* | hppa2.0[nw]-* | hppa64-* \
- | hexagon-* \
- | i*86-* | i860-* | i960-* | ia64-* \
- | ip2k-* | iq2000-* \
- | le32-* | le64-* \
- | lm32-* \
- | m32c-* | m32r-* | m32rle-* \
- | m68000-* | m680[012346]0-* | m68360-* | m683?2-* | m68k-* \
- | m88110-* | m88k-* | maxq-* | mcore-* | metag-* \
- | microblaze-* | microblazeel-* \
- | mips-* | mipsbe-* | mipseb-* | mipsel-* | mipsle-* \
- | mips16-* \
- | mips64-* | mips64el-* \
- | mips64octeon-* | mips64octeonel-* \
- | mips64orion-* | mips64orionel-* \
- | mips64r5900-* | mips64r5900el-* \
- | mips64vr-* | mips64vrel-* \
- | mips64vr4100-* | mips64vr4100el-* \
- | mips64vr4300-* | mips64vr4300el-* \
- | mips64vr5000-* | mips64vr5000el-* \
- | mips64vr5900-* | mips64vr5900el-* \
- | mipsisa32-* | mipsisa32el-* \
- | mipsisa32r2-* | mipsisa32r2el-* \
- | mipsisa64-* | mipsisa64el-* \
- | mipsisa64r2-* | mipsisa64r2el-* \
- | mipsisa64sb1-* | mipsisa64sb1el-* \
- | mipsisa64sr71k-* | mipsisa64sr71kel-* \
- | mipstx39-* | mipstx39el-* \
- | mmix-* \
- | mt-* \
- | msp430-* \
- | nds32-* | nds32le-* | nds32be-* \
- | nios-* | nios2-* \
- | none-* | np1-* | ns16k-* | ns32k-* \
- | open8-* \
- | orion-* \
- | pdp10-* | pdp11-* | pj-* | pjl-* | pn-* | power-* \
- | powerpc-* | powerpc64-* | powerpc64le-* | powerpcle-* \
- | pyramid-* \
- | rl78-* | romp-* | rs6000-* | rx-* \
- | sh-* | sh[1234]-* | sh[24]a-* | sh[24]aeb-* | sh[23]e-* | sh[34]eb-* | sheb-* | shbe-* \
- | shle-* | sh[1234]le-* | sh3ele-* | sh64-* | sh64le-* \
- | sparc-* | sparc64-* | sparc64b-* | sparc64v-* | sparc86x-* | sparclet-* \
- | sparclite-* \
- | sparcv8-* | sparcv9-* | sparcv9b-* | sparcv9v-* | sv1-* | sx?-* \
- | tahoe-* \
- | tic30-* | tic4x-* | tic54x-* | tic55x-* | tic6x-* | tic80-* \
- | tile*-* \
- | tron-* \
- | ubicom32-* \
- | v850-* | v850e-* | v850e1-* | v850es-* | v850e2-* | v850e2v3-* \
- | vax-* \
- | we32k-* \
- | x86-* | x86_64-* | xc16x-* | xps100-* \
- | xstormy16-* | xtensa*-* \
- | ymp-* \
- | z8k-* | z80-*)
- ;;
- # Recognize the basic CPU types without company name, with glob match.
- xtensa*)
- basic_machine=$basic_machine-unknown
- ;;
- # Recognize the various machine names and aliases which stand
- # for a CPU type and a company and sometimes even an OS.
- 386bsd)
- basic_machine=i386-unknown
- os=-bsd
- ;;
- 3b1 | 7300 | 7300-att | att-7300 | pc7300 | safari | unixpc)
- basic_machine=m68000-att
- ;;
- 3b*)
- basic_machine=we32k-att
- ;;
- a29khif)
- basic_machine=a29k-amd
- os=-udi
- ;;
- abacus)
- basic_machine=abacus-unknown
- ;;
- adobe68k)
- basic_machine=m68010-adobe
- os=-scout
- ;;
- alliant | fx80)
- basic_machine=fx80-alliant
- ;;
- altos | altos3068)
- basic_machine=m68k-altos
- ;;
- am29k)
- basic_machine=a29k-none
- os=-bsd
- ;;
- amd64)
- basic_machine=x86_64-pc
- ;;
- amd64-*)
- basic_machine=x86_64-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- amdahl)
- basic_machine=580-amdahl
- os=-sysv
- ;;
- amiga | amiga-*)
- basic_machine=m68k-unknown
- ;;
- amigaos | amigados)
- basic_machine=m68k-unknown
- os=-amigaos
- ;;
- amigaunix | amix)
- basic_machine=m68k-unknown
- os=-sysv4
- ;;
- apollo68)
- basic_machine=m68k-apollo
- os=-sysv
- ;;
- apollo68bsd)
- basic_machine=m68k-apollo
- os=-bsd
- ;;
- aros)
- basic_machine=i386-pc
- os=-aros
- ;;
- aux)
- basic_machine=m68k-apple
- os=-aux
- ;;
- balance)
- basic_machine=ns32k-sequent
- os=-dynix
- ;;
- blackfin)
- basic_machine=bfin-unknown
- os=-linux
- ;;
- blackfin-*)
- basic_machine=bfin-`echo $basic_machine | sed 's/^[^-]*-//'`
- os=-linux
- ;;
- bluegene*)
- basic_machine=powerpc-ibm
- os=-cnk
- ;;
- c54x-*)
- basic_machine=tic54x-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- c55x-*)
- basic_machine=tic55x-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- c6x-*)
- basic_machine=tic6x-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- c90)
- basic_machine=c90-cray
- os=-unicos
- ;;
- cegcc)
- basic_machine=arm-unknown
- os=-cegcc
- ;;
- convex-c1)
- basic_machine=c1-convex
- os=-bsd
- ;;
- convex-c2)
- basic_machine=c2-convex
- os=-bsd
- ;;
- convex-c32)
- basic_machine=c32-convex
- os=-bsd
- ;;
- convex-c34)
- basic_machine=c34-convex
- os=-bsd
- ;;
- convex-c38)
- basic_machine=c38-convex
- os=-bsd
- ;;
- cray | j90)
- basic_machine=j90-cray
- os=-unicos
- ;;
- craynv)
- basic_machine=craynv-cray
- os=-unicosmp
- ;;
- cr16 | cr16-*)
- basic_machine=cr16-unknown
- os=-elf
- ;;
- crds | unos)
- basic_machine=m68k-crds
- ;;
- crisv32 | crisv32-* | etraxfs*)
- basic_machine=crisv32-axis
- ;;
- cris | cris-* | etrax*)
- basic_machine=cris-axis
- ;;
- crx)
- basic_machine=crx-unknown
- os=-elf
- ;;
- da30 | da30-*)
- basic_machine=m68k-da30
- ;;
- decstation | decstation-3100 | pmax | pmax-* | pmin | dec3100 | decstatn)
- basic_machine=mips-dec
- ;;
- decsystem10* | dec10*)
- basic_machine=pdp10-dec
- os=-tops10
- ;;
- decsystem20* | dec20*)
- basic_machine=pdp10-dec
- os=-tops20
- ;;
- delta | 3300 | motorola-3300 | motorola-delta \
- | 3300-motorola | delta-motorola)
- basic_machine=m68k-motorola
- ;;
- delta88)
- basic_machine=m88k-motorola
- os=-sysv3
- ;;
- dicos)
- basic_machine=i686-pc
- os=-dicos
- ;;
- djgpp)
- basic_machine=i586-pc
- os=-msdosdjgpp
- ;;
- dpx20 | dpx20-*)
- basic_machine=rs6000-bull
- os=-bosx
- ;;
- dpx2* | dpx2*-bull)
- basic_machine=m68k-bull
- os=-sysv3
- ;;
- ebmon29k)
- basic_machine=a29k-amd
- os=-ebmon
- ;;
- elxsi)
- basic_machine=elxsi-elxsi
- os=-bsd
- ;;
- encore | umax | mmax)
- basic_machine=ns32k-encore
- ;;
- es1800 | OSE68k | ose68k | ose | OSE)
- basic_machine=m68k-ericsson
- os=-ose
- ;;
- fx2800)
- basic_machine=i860-alliant
- ;;
- genix)
- basic_machine=ns32k-ns
- ;;
- gmicro)
- basic_machine=tron-gmicro
- os=-sysv
- ;;
- go32)
- basic_machine=i386-pc
- os=-go32
- ;;
- h3050r* | hiux*)
- basic_machine=hppa1.1-hitachi
- os=-hiuxwe2
- ;;
- h8300hms)
- basic_machine=h8300-hitachi
- os=-hms
- ;;
- h8300xray)
- basic_machine=h8300-hitachi
- os=-xray
- ;;
- h8500hms)
- basic_machine=h8500-hitachi
- os=-hms
- ;;
- harris)
- basic_machine=m88k-harris
- os=-sysv3
- ;;
- hp300-*)
- basic_machine=m68k-hp
- ;;
- hp300bsd)
- basic_machine=m68k-hp
- os=-bsd
- ;;
- hp300hpux)
- basic_machine=m68k-hp
- os=-hpux
- ;;
- hp3k9[0-9][0-9] | hp9[0-9][0-9])
- basic_machine=hppa1.0-hp
- ;;
- hp9k2[0-9][0-9] | hp9k31[0-9])
- basic_machine=m68000-hp
- ;;
- hp9k3[2-9][0-9])
- basic_machine=m68k-hp
- ;;
- hp9k6[0-9][0-9] | hp6[0-9][0-9])
- basic_machine=hppa1.0-hp
- ;;
- hp9k7[0-79][0-9] | hp7[0-79][0-9])
- basic_machine=hppa1.1-hp
- ;;
- hp9k78[0-9] | hp78[0-9])
- # FIXME: really hppa2.0-hp
- basic_machine=hppa1.1-hp
- ;;
- hp9k8[67]1 | hp8[67]1 | hp9k80[24] | hp80[24] | hp9k8[78]9 | hp8[78]9 | hp9k893 | hp893)
- # FIXME: really hppa2.0-hp
- basic_machine=hppa1.1-hp
- ;;
- hp9k8[0-9][13679] | hp8[0-9][13679])
- basic_machine=hppa1.1-hp
- ;;
- hp9k8[0-9][0-9] | hp8[0-9][0-9])
- basic_machine=hppa1.0-hp
- ;;
- hppa-next)
- os=-nextstep3
- ;;
- hppaosf)
- basic_machine=hppa1.1-hp
- os=-osf
- ;;
- hppro)
- basic_machine=hppa1.1-hp
- os=-proelf
- ;;
- i370-ibm* | ibm*)
- basic_machine=i370-ibm
- ;;
- i*86v32)
- basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
- os=-sysv32
- ;;
- i*86v4*)
- basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
- os=-sysv4
- ;;
- i*86v)
- basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
- os=-sysv
- ;;
- i*86sol2)
- basic_machine=`echo $1 | sed -e 's/86.*/86-pc/'`
- os=-solaris2
- ;;
- i386mach)
- basic_machine=i386-mach
- os=-mach
- ;;
- i386-vsta | vsta)
- basic_machine=i386-unknown
- os=-vsta
- ;;
- iris | iris4d)
- basic_machine=mips-sgi
- case $os in
- -irix*)
- ;;
- *)
- os=-irix4
- ;;
- esac
- ;;
- isi68 | isi)
- basic_machine=m68k-isi
- os=-sysv
- ;;
- m68knommu)
- basic_machine=m68k-unknown
- os=-linux
- ;;
- m68knommu-*)
- basic_machine=m68k-`echo $basic_machine | sed 's/^[^-]*-//'`
- os=-linux
- ;;
- m88k-omron*)
- basic_machine=m88k-omron
- ;;
- magnum | m3230)
- basic_machine=mips-mips
- os=-sysv
- ;;
- merlin)
- basic_machine=ns32k-utek
- os=-sysv
- ;;
- microblaze*)
- basic_machine=microblaze-xilinx
- ;;
- mingw64)
- basic_machine=x86_64-pc
- os=-mingw64
- ;;
- mingw32)
- basic_machine=i386-pc
- os=-mingw32
- ;;
- mingw32ce)
- basic_machine=arm-unknown
- os=-mingw32ce
- ;;
- miniframe)
- basic_machine=m68000-convergent
- ;;
- *mint | -mint[0-9]* | *MiNT | *MiNT[0-9]*)
- basic_machine=m68k-atari
- os=-mint
- ;;
- mips3*-*)
- basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`
- ;;
- mips3*)
- basic_machine=`echo $basic_machine | sed -e 's/mips3/mips64/'`-unknown
- ;;
- monitor)
- basic_machine=m68k-rom68k
- os=-coff
- ;;
- morphos)
- basic_machine=powerpc-unknown
- os=-morphos
- ;;
- msdos)
- basic_machine=i386-pc
- os=-msdos
- ;;
- ms1-*)
- basic_machine=`echo $basic_machine | sed -e 's/ms1-/mt-/'`
- ;;
- msys)
- basic_machine=i386-pc
- os=-msys
- ;;
- mvs)
- basic_machine=i370-ibm
- os=-mvs
- ;;
- nacl)
- basic_machine=le32-unknown
- os=-nacl
- ;;
- ncr3000)
- basic_machine=i486-ncr
- os=-sysv4
- ;;
- netbsd386)
- basic_machine=i386-unknown
- os=-netbsd
- ;;
- netwinder)
- basic_machine=armv4l-rebel
- os=-linux
- ;;
- news | news700 | news800 | news900)
- basic_machine=m68k-sony
- os=-newsos
- ;;
- news1000)
- basic_machine=m68030-sony
- os=-newsos
- ;;
- news-3600 | risc-news)
- basic_machine=mips-sony
- os=-newsos
- ;;
- necv70)
- basic_machine=v70-nec
- os=-sysv
- ;;
- next | m*-next )
- basic_machine=m68k-next
- case $os in
- -nextstep* )
- ;;
- -ns2*)
- os=-nextstep2
- ;;
- *)
- os=-nextstep3
- ;;
- esac
- ;;
- nh3000)
- basic_machine=m68k-harris
- os=-cxux
- ;;
- nh[45]000)
- basic_machine=m88k-harris
- os=-cxux
- ;;
- nindy960)
- basic_machine=i960-intel
- os=-nindy
- ;;
- mon960)
- basic_machine=i960-intel
- os=-mon960
- ;;
- nonstopux)
- basic_machine=mips-compaq
- os=-nonstopux
- ;;
- np1)
- basic_machine=np1-gould
- ;;
- neo-tandem)
- basic_machine=neo-tandem
- ;;
- nse-tandem)
- basic_machine=nse-tandem
- ;;
- nsr-tandem)
- basic_machine=nsr-tandem
- ;;
- op50n-* | op60c-*)
- basic_machine=hppa1.1-oki
- os=-proelf
- ;;
- openrisc | openrisc-*)
- basic_machine=or32-unknown
- ;;
- os400)
- basic_machine=powerpc-ibm
- os=-os400
- ;;
- OSE68000 | ose68000)
- basic_machine=m68000-ericsson
- os=-ose
- ;;
- os68k)
- basic_machine=m68k-none
- os=-os68k
- ;;
- pa-hitachi)
- basic_machine=hppa1.1-hitachi
- os=-hiuxwe2
- ;;
- paragon)
- basic_machine=i860-intel
- os=-osf
- ;;
- parisc)
- basic_machine=hppa-unknown
- os=-linux
- ;;
- parisc-*)
- basic_machine=hppa-`echo $basic_machine | sed 's/^[^-]*-//'`
- os=-linux
- ;;
- pbd)
- basic_machine=sparc-tti
- ;;
- pbb)
- basic_machine=m68k-tti
- ;;
- pc532 | pc532-*)
- basic_machine=ns32k-pc532
- ;;
- pc98)
- basic_machine=i386-pc
- ;;
- pc98-*)
- basic_machine=i386-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- pentium | p5 | k5 | k6 | nexgen | viac3)
- basic_machine=i586-pc
- ;;
- pentiumpro | p6 | 6x86 | athlon | athlon_*)
- basic_machine=i686-pc
- ;;
- pentiumii | pentium2 | pentiumiii | pentium3)
- basic_machine=i686-pc
- ;;
- pentium4)
- basic_machine=i786-pc
- ;;
- pentium-* | p5-* | k5-* | k6-* | nexgen-* | viac3-*)
- basic_machine=i586-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- pentiumpro-* | p6-* | 6x86-* | athlon-*)
- basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- pentiumii-* | pentium2-* | pentiumiii-* | pentium3-*)
- basic_machine=i686-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- pentium4-*)
- basic_machine=i786-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- pn)
- basic_machine=pn-gould
- ;;
- power) basic_machine=power-ibm
- ;;
- ppc | ppcbe) basic_machine=powerpc-unknown
- ;;
- ppc-* | ppcbe-*)
- basic_machine=powerpc-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- ppcle | powerpclittle | ppc-le | powerpc-little)
- basic_machine=powerpcle-unknown
- ;;
- ppcle-* | powerpclittle-*)
- basic_machine=powerpcle-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- ppc64) basic_machine=powerpc64-unknown
- ;;
- ppc64-*) basic_machine=powerpc64-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- ppc64le | powerpc64little | ppc64-le | powerpc64-little)
- basic_machine=powerpc64le-unknown
- ;;
- ppc64le-* | powerpc64little-*)
- basic_machine=powerpc64le-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- ps2)
- basic_machine=i386-ibm
- ;;
- pw32)
- basic_machine=i586-unknown
- os=-pw32
- ;;
- rdos | rdos64)
- basic_machine=x86_64-pc
- os=-rdos
- ;;
- rdos32)
- basic_machine=i386-pc
- os=-rdos
- ;;
- rom68k)
- basic_machine=m68k-rom68k
- os=-coff
- ;;
- rm[46]00)
- basic_machine=mips-siemens
- ;;
- rtpc | rtpc-*)
- basic_machine=romp-ibm
- ;;
- s390 | s390-*)
- basic_machine=s390-ibm
- ;;
- s390x | s390x-*)
- basic_machine=s390x-ibm
- ;;
- sa29200)
- basic_machine=a29k-amd
- os=-udi
- ;;
- sb1)
- basic_machine=mipsisa64sb1-unknown
- ;;
- sb1el)
- basic_machine=mipsisa64sb1el-unknown
- ;;
- sde)
- basic_machine=mipsisa32-sde
- os=-elf
- ;;
- sei)
- basic_machine=mips-sei
- os=-seiux
- ;;
- sequent)
- basic_machine=i386-sequent
- ;;
- sh)
- basic_machine=sh-hitachi
- os=-hms
- ;;
- sh5el)
- basic_machine=sh5le-unknown
- ;;
- sh64)
- basic_machine=sh64-unknown
- ;;
- sparclite-wrs | simso-wrs)
- basic_machine=sparclite-wrs
- os=-vxworks
- ;;
- sps7)
- basic_machine=m68k-bull
- os=-sysv2
- ;;
- spur)
- basic_machine=spur-unknown
- ;;
- st2000)
- basic_machine=m68k-tandem
- ;;
- stratus)
- basic_machine=i860-stratus
- os=-sysv4
- ;;
- strongarm-* | thumb-*)
- basic_machine=arm-`echo $basic_machine | sed 's/^[^-]*-//'`
- ;;
- sun2)
- basic_machine=m68000-sun
- ;;
- sun2os3)
- basic_machine=m68000-sun
- os=-sunos3
- ;;
- sun2os4)
- basic_machine=m68000-sun
- os=-sunos4
- ;;
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- basic_machine=m68k-sun
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- sun4os3)
- basic_machine=sparc-sun
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- basic_machine=sparc-sun
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- sun3 | sun3-*)
- basic_machine=m68k-sun
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- basic_machine=sparc-sun
- ;;
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- basic_machine=i386-sun
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- sv1)
- basic_machine=sv1-cray
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- symmetry)
- basic_machine=i386-sequent
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- basic_machine=alphaev5-cray
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- basic_machine=t90-cray
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- tile*)
- basic_machine=$basic_machine-unknown
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- basic_machine=mipstx39-unknown
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- basic_machine=mipstx39el-unknown
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- basic_machine=pdp10-xkl
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- tpf)
- basic_machine=s390x-ibm
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- udi29k)
- basic_machine=a29k-amd
- os=-udi
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- basic_machine=a29k-nyu
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- basic_machine=vax-dec
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- basic_machine=f301-fujitsu
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- basic_machine=m68k-wrs
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- w65*)
- basic_machine=w65-wdc
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- w89k-*)
- basic_machine=hppa1.1-winbond
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- xbox)
- basic_machine=i686-pc
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- basic_machine=none-none
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- | -clix* | -riscos* | -uniplus* | -iris* | -rtu* | -xenix* \
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- | -bitrig* | -openbsd* | -solidbsd* \
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- | -ptx* | -coff* | -ecoff* | -winnt* | -domain* | -vsta* \
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- | -chorusos* | -chorusrdb* | -cegcc* \
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- | -mingw32* | -mingw64* | -linux-gnu* | -linux-android* \
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- | -uxpv* | -beos* | -mpeix* | -udk* \
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- | -openstep* | -oskit* | -conix* | -pw32* | -nonstopux* \
- | -storm-chaos* | -tops10* | -tenex* | -tops20* | -its* \
- | -os2* | -vos* | -palmos* | -uclinux* | -nucleus* \
- | -morphos* | -superux* | -rtmk* | -rtmk-nova* | -windiss* \
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- | -windows* | -osx | -abug | -netware* | -os9* | -beos* | -haiku* \
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- re_direlt='/[^/][^/]*/\.\./'
- # Canonicalize the pathname of ld
- ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
- while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
- ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
- done
- test -z "$LD" && LD="$ac_prog"
- ;;
- "")
- # If it fails, then pretend we aren't using GCC.
- ac_prog=ld
- ;;
- *)
- # If it is relative, then search for the first ld in PATH.
- with_gnu_ld=unknown
- ;;
- esac
-elif test "$with_gnu_ld" = yes; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for GNU ld" >&5
-$as_echo_n "checking for GNU ld... " >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for non-GNU ld" >&5
-$as_echo_n "checking for non-GNU ld... " >&6; }
-fi
-if ${lt_cv_path_LD+:} false; then :
- $as_echo_n "(cached) " >&6
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- if test -z "$LD"; then
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- for ac_dir in $PATH; do
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- # Check to see if the program is GNU ld. I'd rather use --version,
- # but apparently some variants of GNU ld only accept -v.
- # Break only if it was the GNU/non-GNU ld that we prefer.
- case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
- *GNU* | *'with BFD'*)
- test "$with_gnu_ld" != no && break
- ;;
- *)
- test "$with_gnu_ld" != yes && break
- ;;
- esac
- fi
- done
- IFS="$lt_save_ifs"
-else
- lt_cv_path_LD="$LD" # Let the user override the test with a path.
-fi
-fi
-
-LD="$lt_cv_path_LD"
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- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LD" >&5
-$as_echo "$LD" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
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-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if the linker ($LD) is GNU ld" >&5
-$as_echo_n "checking if the linker ($LD) is GNU ld... " >&6; }
-if ${lt_cv_prog_gnu_ld+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- # I'd rather use --version here, but apparently some GNU lds only accept -v.
-case `$LD -v 2>&1 </dev/null` in
-*GNU* | *'with BFD'*)
- lt_cv_prog_gnu_ld=yes
- ;;
-*)
- lt_cv_prog_gnu_ld=no
- ;;
-esac
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_gnu_ld" >&5
-$as_echo "$lt_cv_prog_gnu_ld" >&6; }
-with_gnu_ld=$lt_cv_prog_gnu_ld
-
-
-
-
-
-
-
-
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
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-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to run the C preprocessor" >&5
-$as_echo_n "checking how to run the C preprocessor... " >&6; }
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-if test -n "$CPP" && test -d "$CPP"; then
- CPP=
-fi
-if test -z "$CPP"; then
- if ${ac_cv_prog_CPP+:} false; then :
- $as_echo_n "(cached) " >&6
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- # Double quotes because CPP needs to be expanded
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- do
- ac_preproc_ok=false
-for ac_c_preproc_warn_flag in '' yes
-do
- # Use a header file that comes with gcc, so configuring glibc
- # with a fresh cross-compiler works.
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- # <limits.h> exists even on freestanding compilers.
- # On the NeXT, cc -E runs the code through the compiler's parser,
- # not just through cpp. "Syntax error" is here to catch this case.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
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-# include <limits.h>
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-# include <assert.h>
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- Syntax error
-_ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
-
-else
- # Broken: fails on valid input.
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-fi
-rm -f conftest.err conftest.i conftest.$ac_ext
-
- # OK, works on sane cases. Now check whether nonexistent headers
- # can be detected and how.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <ac_nonexistent.h>
-_ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
- # Broken: success on invalid input.
-continue
-else
- # Passes both tests.
-ac_preproc_ok=:
-break
-fi
-rm -f conftest.err conftest.i conftest.$ac_ext
-
-done
-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.i conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then :
- break
-fi
-
- done
- ac_cv_prog_CPP=$CPP
-
-fi
- CPP=$ac_cv_prog_CPP
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- ac_cv_prog_CPP=$CPP
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $CPP" >&5
-$as_echo "$CPP" >&6; }
-ac_preproc_ok=false
-for ac_c_preproc_warn_flag in '' yes
-do
- # Use a header file that comes with gcc, so configuring glibc
- # with a fresh cross-compiler works.
- # Prefer <limits.h> to <assert.h> if __STDC__ is defined, since
- # <limits.h> exists even on freestanding compilers.
- # On the NeXT, cc -E runs the code through the compiler's parser,
- # not just through cpp. "Syntax error" is here to catch this case.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#ifdef __STDC__
-# include <limits.h>
-#else
-# include <assert.h>
-#endif
- Syntax error
-_ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
-
-else
- # Broken: fails on valid input.
-continue
-fi
-rm -f conftest.err conftest.i conftest.$ac_ext
-
- # OK, works on sane cases. Now check whether nonexistent headers
- # can be detected and how.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <ac_nonexistent.h>
-_ACEOF
-if ac_fn_c_try_cpp "$LINENO"; then :
- # Broken: success on invalid input.
-continue
-else
- # Passes both tests.
-ac_preproc_ok=:
-break
-fi
-rm -f conftest.err conftest.i conftest.$ac_ext
-
-done
-# Because of `break', _AC_PREPROC_IFELSE's cleaning code was skipped.
-rm -f conftest.i conftest.err conftest.$ac_ext
-if $ac_preproc_ok; then :
-
-else
- { { $as_echo "$as_me:${as_lineno-$LINENO}: error: in \`$ac_pwd':" >&5
-$as_echo "$as_me: error: in \`$ac_pwd':" >&2;}
-as_fn_error $? "C preprocessor \"$CPP\" fails sanity check
-See \`config.log' for more details" "$LINENO" 5; }
-fi
-
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-for ac_prog in gawk mawk nawk awk
-do
- # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_AWK+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$AWK"; then
- ac_cv_prog_AWK="$AWK" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_AWK="$ac_prog"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-AWK=$ac_cv_prog_AWK
-if test -n "$AWK"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AWK" >&5
-$as_echo "$AWK" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
- test -n "$AWK" && break
-done
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ln -s works" >&5
-$as_echo_n "checking whether ln -s works... " >&6; }
-LN_S=$as_ln_s
-if test "$LN_S" = "ln -s"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no, using $LN_S" >&5
-$as_echo "no, using $LN_S" >&6; }
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether ${MAKE-make} sets \$(MAKE)" >&5
-$as_echo_n "checking whether ${MAKE-make} sets \$(MAKE)... " >&6; }
-set x ${MAKE-make}
-ac_make=`$as_echo "$2" | sed 's/+/p/g; s/[^a-zA-Z0-9_]/_/g'`
-if eval \${ac_cv_prog_make_${ac_make}_set+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat >conftest.make <<\_ACEOF
-SHELL = /bin/sh
-all:
- @echo '@@@%%%=$(MAKE)=@@@%%%'
-_ACEOF
-# GNU make sometimes prints "make[1]: Entering ...", which would confuse us.
-case `${MAKE-make} -f conftest.make 2>/dev/null` in
- *@@@%%%=?*=@@@%%%*)
- eval ac_cv_prog_make_${ac_make}_set=yes;;
- *)
- eval ac_cv_prog_make_${ac_make}_set=no;;
-esac
-rm -f conftest.make
-fi
-if eval test \$ac_cv_prog_make_${ac_make}_set = yes; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
- SET_MAKE=
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
- SET_MAKE="MAKE=${MAKE-make}"
-fi
-
-
-case `pwd` in
- *\ * | *\ *)
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&5
-$as_echo "$as_me: WARNING: Libtool does not cope well with whitespace in \`pwd\`" >&2;} ;;
-esac
-
-
-
-macro_version='2.4.2'
-macro_revision='1.3337'
-
-
-
-
-
-
-
-
-
-
-
-
-
-ltmain="$ac_aux_dir/ltmain.sh"
-
-# Backslashify metacharacters that are still active within
-# double-quoted strings.
-sed_quote_subst='s/\(["`$\\]\)/\\\1/g'
-
-# Same as above, but do not quote variable references.
-double_quote_subst='s/\(["`\\]\)/\\\1/g'
-
-# Sed substitution to delay expansion of an escaped shell variable in a
-# double_quote_subst'ed string.
-delay_variable_subst='s/\\\\\\\\\\\$/\\\\\\$/g'
-
-# Sed substitution to delay expansion of an escaped single quote.
-delay_single_quote_subst='s/'\''/'\'\\\\\\\'\''/g'
-
-# Sed substitution to avoid accidental globbing in evaled expressions
-no_glob_subst='s/\*/\\\*/g'
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for BSD- or MS-compatible name lister (nm)" >&5
-$as_echo_n "checking for BSD- or MS-compatible name lister (nm)... " >&6; }
-if ${lt_cv_path_NM+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$NM"; then
- # Let the user override the test.
- lt_cv_path_NM="$NM"
-else
- lt_nm_to_check="${ac_tool_prefix}nm"
- if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
- lt_nm_to_check="$lt_nm_to_check nm"
- fi
- for lt_tmp_nm in $lt_nm_to_check; do
- lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
- for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
- IFS="$lt_save_ifs"
- test -z "$ac_dir" && ac_dir=.
- tmp_nm="$ac_dir/$lt_tmp_nm"
- if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
- # Check to see if the nm accepts a BSD-compat flag.
- # Adding the `sed 1q' prevents false positives on HP-UX, which says:
- # nm: unknown option "B" ignored
- # Tru64's nm complains that /dev/null is an invalid object file
- case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
- */dev/null* | *'Invalid file or object type'*)
- lt_cv_path_NM="$tmp_nm -B"
- break
- ;;
- *)
- case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
- */dev/null*)
- lt_cv_path_NM="$tmp_nm -p"
- break
- ;;
- *)
- lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
- continue # so that we can try to find one that supports BSD flags
- ;;
- esac
- ;;
- esac
- fi
- done
- IFS="$lt_save_ifs"
- done
- : ${lt_cv_path_NM=no}
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_NM" >&5
-$as_echo "$lt_cv_path_NM" >&6; }
-if test "$lt_cv_path_NM" != "no"; then
- NM="$lt_cv_path_NM"
-else
- # Didn't find any BSD compatible name lister, look for dumpbin.
- if test -n "$DUMPBIN"; then :
- # Let the user override the test.
- else
- if test -n "$ac_tool_prefix"; then
- for ac_prog in dumpbin "link -dump"
- do
- # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
-set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_DUMPBIN+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$DUMPBIN"; then
- ac_cv_prog_DUMPBIN="$DUMPBIN" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
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-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
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- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-DUMPBIN=$ac_cv_prog_DUMPBIN
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- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
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-
-
- test -n "$DUMPBIN" && break
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-if test -z "$DUMPBIN"; then
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-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
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- if test -n "$ac_ct_DUMPBIN"; then
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- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
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-IFS=$as_save_IFS
-
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-ac_ct_DUMPBIN=$ac_cv_prog_ac_ct_DUMPBIN
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-fi
-
-
- test -n "$ac_ct_DUMPBIN" && break
-done
-
- if test "x$ac_ct_DUMPBIN" = x; then
- DUMPBIN=":"
- else
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-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
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-esac
- DUMPBIN=$ac_ct_DUMPBIN
- fi
-fi
-
- case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
- *COFF*)
- DUMPBIN="$DUMPBIN -symbols"
- ;;
- *)
- DUMPBIN=:
- ;;
- esac
- fi
-
- if test "$DUMPBIN" != ":"; then
- NM="$DUMPBIN"
- fi
-fi
-test -z "$NM" && NM=nm
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the name lister ($NM) interface" >&5
-$as_echo_n "checking the name lister ($NM) interface... " >&6; }
-if ${lt_cv_nm_interface+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_nm_interface="BSD nm"
- echo "int some_variable = 0;" > conftest.$ac_ext
- (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&5)
- (eval "$ac_compile" 2>conftest.err)
- cat conftest.err >&5
- (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&5)
- (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
- cat conftest.err >&5
- (eval echo "\"\$as_me:$LINENO: output\"" >&5)
- cat conftest.out >&5
- if $GREP 'External.*some_variable' conftest.out > /dev/null; then
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-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_nm_interface" >&5
-$as_echo "$lt_cv_nm_interface" >&6; }
-
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-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking the maximum length of command line arguments" >&5
-$as_echo_n "checking the maximum length of command line arguments... " >&6; }
-if ${lt_cv_sys_max_cmd_len+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- i=0
- teststring="ABCD"
-
- case $build_os in
- msdosdjgpp*)
- # On DJGPP, this test can blow up pretty badly due to problems in libc
- # (any single argument exceeding 2000 bytes causes a buffer overrun
- # during glob expansion). Even if it were fixed, the result of this
- # check would be larger than it should be.
- lt_cv_sys_max_cmd_len=12288; # 12K is about right
- ;;
-
- gnu*)
- # Under GNU Hurd, this test is not required because there is
- # no limit to the length of command line arguments.
- # Libtool will interpret -1 as no limit whatsoever
- lt_cv_sys_max_cmd_len=-1;
- ;;
-
- cygwin* | mingw* | cegcc*)
- # On Win9x/ME, this test blows up -- it succeeds, but takes
- # about 5 minutes as the teststring grows exponentially.
- # Worse, since 9x/ME are not pre-emptively multitasking,
- # you end up with a "frozen" computer, even though with patience
- # the test eventually succeeds (with a max line length of 256k).
- # Instead, let's just punt: use the minimum linelength reported by
- # all of the supported platforms: 8192 (on NT/2K/XP).
- lt_cv_sys_max_cmd_len=8192;
- ;;
-
- mint*)
- # On MiNT this can take a long time and run out of memory.
- lt_cv_sys_max_cmd_len=8192;
- ;;
-
- amigaos*)
- # On AmigaOS with pdksh, this test takes hours, literally.
- # So we just punt and use a minimum line length of 8192.
- lt_cv_sys_max_cmd_len=8192;
- ;;
-
- netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
- # This has been around since 386BSD, at least. Likely further.
- if test -x /sbin/sysctl; then
- lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
- elif test -x /usr/sbin/sysctl; then
- lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
- else
- lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
- fi
- # And add a safety zone
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
- ;;
-
- interix*)
- # We know the value 262144 and hardcode it with a safety zone (like BSD)
- lt_cv_sys_max_cmd_len=196608
- ;;
-
- os2*)
- # The test takes a long time on OS/2.
- lt_cv_sys_max_cmd_len=8192
- ;;
-
- osf*)
- # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
- # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
- # nice to cause kernel panics so lets avoid the loop below.
- # First set a reasonable default.
- lt_cv_sys_max_cmd_len=16384
- #
- if test -x /sbin/sysconfig; then
- case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
- *1*) lt_cv_sys_max_cmd_len=-1 ;;
- esac
- fi
- ;;
- sco3.2v5*)
- lt_cv_sys_max_cmd_len=102400
- ;;
- sysv5* | sco5v6* | sysv4.2uw2*)
- kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
- if test -n "$kargmax"; then
- lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[ ]//'`
- else
- lt_cv_sys_max_cmd_len=32768
- fi
- ;;
- *)
- lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
- if test -n "$lt_cv_sys_max_cmd_len"; then
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
- else
- # Make teststring a little bigger before we do anything with it.
- # a 1K string should be a reasonable start.
- for i in 1 2 3 4 5 6 7 8 ; do
- teststring=$teststring$teststring
- done
- SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
- # If test is not a shell built-in, we'll probably end up computing a
- # maximum length that is only half of the actual maximum length, but
- # we can't tell.
- while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \
- = "X$teststring$teststring"; } >/dev/null 2>&1 &&
- test $i != 17 # 1/2 MB should be enough
- do
- i=`expr $i + 1`
- teststring=$teststring$teststring
- done
- # Only check the string length outside the loop.
- lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
- teststring=
- # Add a significant safety factor because C++ compilers can tack on
- # massive amounts of additional arguments before passing them to the
- # linker. It appears as though 1/2 is a usable value.
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
- fi
- ;;
- esac
-
-fi
-
-if test -n $lt_cv_sys_max_cmd_len ; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sys_max_cmd_len" >&5
-$as_echo "$lt_cv_sys_max_cmd_len" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: none" >&5
-$as_echo "none" >&6; }
-fi
-max_cmd_len=$lt_cv_sys_max_cmd_len
-
-
-
-
-
-
-: ${CP="cp -f"}
-: ${MV="mv -f"}
-: ${RM="rm -f"}
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands some XSI constructs" >&5
-$as_echo_n "checking whether the shell understands some XSI constructs... " >&6; }
-# Try some XSI features
-xsi_shell=no
-( _lt_dummy="a/b/c"
- test "${_lt_dummy##*/},${_lt_dummy%/*},${_lt_dummy#??}"${_lt_dummy%"$_lt_dummy"}, \
- = c,a/b,b/c, \
- && eval 'test $(( 1 + 1 )) -eq 2 \
- && test "${#_lt_dummy}" -eq 5' ) >/dev/null 2>&1 \
- && xsi_shell=yes
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $xsi_shell" >&5
-$as_echo "$xsi_shell" >&6; }
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the shell understands \"+=\"" >&5
-$as_echo_n "checking whether the shell understands \"+=\"... " >&6; }
-lt_shell_append=no
-( foo=bar; set foo baz; eval "$1+=\$2" && test "$foo" = barbaz ) \
- >/dev/null 2>&1 \
- && lt_shell_append=yes
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_shell_append" >&5
-$as_echo "$lt_shell_append" >&6; }
-
-
-if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
- lt_unset=unset
-else
- lt_unset=false
-fi
-
-
-
-
-
-# test EBCDIC or ASCII
-case `echo X|tr X '\101'` in
- A) # ASCII based system
- # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
- lt_SP2NL='tr \040 \012'
- lt_NL2SP='tr \015\012 \040\040'
- ;;
- *) # EBCDIC based system
- lt_SP2NL='tr \100 \n'
- lt_NL2SP='tr \r\n \100\100'
- ;;
-esac
-
-
-
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to $host format" >&5
-$as_echo_n "checking how to convert $build file names to $host format... " >&6; }
-if ${lt_cv_to_host_file_cmd+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- case $host in
- *-*-mingw* )
- case $build in
- *-*-mingw* ) # actually msys
- lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
- ;;
- *-*-cygwin* )
- lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
- ;;
- * ) # otherwise, assume *nix
- lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32
- ;;
- esac
- ;;
- *-*-cygwin* )
- case $build in
- *-*-mingw* ) # actually msys
- lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
- ;;
- *-*-cygwin* )
- lt_cv_to_host_file_cmd=func_convert_file_noop
- ;;
- * ) # otherwise, assume *nix
- lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin
- ;;
- esac
- ;;
- * ) # unhandled hosts (and "normal" native builds)
- lt_cv_to_host_file_cmd=func_convert_file_noop
- ;;
-esac
-
-fi
-
-to_host_file_cmd=$lt_cv_to_host_file_cmd
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_host_file_cmd" >&5
-$as_echo "$lt_cv_to_host_file_cmd" >&6; }
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to convert $build file names to toolchain format" >&5
-$as_echo_n "checking how to convert $build file names to toolchain format... " >&6; }
-if ${lt_cv_to_tool_file_cmd+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- #assume ordinary cross tools, or native build.
-lt_cv_to_tool_file_cmd=func_convert_file_noop
-case $host in
- *-*-mingw* )
- case $build in
- *-*-mingw* ) # actually msys
- lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
- ;;
- esac
- ;;
-esac
-
-fi
-
-to_tool_file_cmd=$lt_cv_to_tool_file_cmd
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_to_tool_file_cmd" >&5
-$as_echo "$lt_cv_to_tool_file_cmd" >&6; }
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $LD option to reload object files" >&5
-$as_echo_n "checking for $LD option to reload object files... " >&6; }
-if ${lt_cv_ld_reload_flag+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_ld_reload_flag='-r'
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_reload_flag" >&5
-$as_echo "$lt_cv_ld_reload_flag" >&6; }
-reload_flag=$lt_cv_ld_reload_flag
-case $reload_flag in
-"" | " "*) ;;
-*) reload_flag=" $reload_flag" ;;
-esac
-reload_cmds='$LD$reload_flag -o $output$reload_objs'
-case $host_os in
- cygwin* | mingw* | pw32* | cegcc*)
- if test "$GCC" != yes; then
- reload_cmds=false
- fi
- ;;
- darwin*)
- if test "$GCC" = yes; then
- reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
- else
- reload_cmds='$LD$reload_flag -o $output$reload_objs'
- fi
- ;;
-esac
-
-
-
-
-
-
-
-
-
-if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
-set dummy ${ac_tool_prefix}objdump; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_OBJDUMP+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$OBJDUMP"; then
- ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-OBJDUMP=$ac_cv_prog_OBJDUMP
-if test -n "$OBJDUMP"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
-$as_echo "$OBJDUMP" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_OBJDUMP"; then
- ac_ct_OBJDUMP=$OBJDUMP
- # Extract the first word of "objdump", so it can be a program name with args.
-set dummy objdump; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_OBJDUMP"; then
- ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_OBJDUMP="objdump"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
-if test -n "$ac_ct_OBJDUMP"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
-$as_echo "$ac_ct_OBJDUMP" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_OBJDUMP" = x; then
- OBJDUMP="false"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- OBJDUMP=$ac_ct_OBJDUMP
- fi
-else
- OBJDUMP="$ac_cv_prog_OBJDUMP"
-fi
-
-test -z "$OBJDUMP" && OBJDUMP=objdump
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to recognize dependent libraries" >&5
-$as_echo_n "checking how to recognize dependent libraries... " >&6; }
-if ${lt_cv_deplibs_check_method+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_file_magic_cmd='$MAGIC_CMD'
-lt_cv_file_magic_test_file=
-lt_cv_deplibs_check_method='unknown'
-# Need to set the preceding variable on all platforms that support
-# interlibrary dependencies.
-# 'none' -- dependencies not supported.
-# `unknown' -- same as none, but documents that we really don't know.
-# 'pass_all' -- all dependencies passed with no checks.
-# 'test_compile' -- check by making test program.
-# 'file_magic [[regex]]' -- check by looking for files in library path
-# which responds to the $file_magic_cmd with a given extended regex.
-# If you have `file' or equivalent on your system and you're not sure
-# whether `pass_all' will *always* work, you probably want this one.
-
-case $host_os in
-aix[4-9]*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-beos*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-bsdi[45]*)
- lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib)'
- lt_cv_file_magic_cmd='/usr/bin/file -L'
- lt_cv_file_magic_test_file=/shlib/libc.so
- ;;
-
-cygwin*)
- # func_win32_libid is a shell function defined in ltmain.sh
- lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
- lt_cv_file_magic_cmd='func_win32_libid'
- ;;
-
-mingw* | pw32*)
- # Base MSYS/MinGW do not provide the 'file' command needed by
- # func_win32_libid shell function, so use a weaker test based on 'objdump',
- # unless we find 'file', for example because we are cross-compiling.
- # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
- if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
- lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
- lt_cv_file_magic_cmd='func_win32_libid'
- else
- # Keep this pattern in sync with the one in func_win32_libid.
- lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)'
- lt_cv_file_magic_cmd='$OBJDUMP -f'
- fi
- ;;
-
-cegcc*)
- # use the weaker test based on 'objdump'. See mingw*.
- lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
- lt_cv_file_magic_cmd='$OBJDUMP -f'
- ;;
-
-darwin* | rhapsody*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-freebsd* | dragonfly*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
- case $host_cpu in
- i*86 )
- # Not sure whether the presence of OpenBSD here was a mistake.
- # Let's accept both of them until this is cleared up.
- lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[3-9]86 (compact )?demand paged shared library'
- lt_cv_file_magic_cmd=/usr/bin/file
- lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
- ;;
- esac
- else
- lt_cv_deplibs_check_method=pass_all
- fi
- ;;
-
-gnu*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-haiku*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-hpux10.20* | hpux11*)
- lt_cv_file_magic_cmd=/usr/bin/file
- case $host_cpu in
- ia64*)
- lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF-[0-9][0-9]) shared object file - IA64'
- lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
- ;;
- hppa*64*)
- lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]'
- lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
- ;;
- *)
- lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|PA-RISC[0-9]\.[0-9]) shared library'
- lt_cv_file_magic_test_file=/usr/lib/libc.sl
- ;;
- esac
- ;;
-
-interix[3-9]*)
- # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
- lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|\.a)$'
- ;;
-
-irix5* | irix6* | nonstopux*)
- case $LD in
- *-32|*"-32 ") libmagic=32-bit;;
- *-n32|*"-n32 ") libmagic=N32;;
- *-64|*"-64 ") libmagic=64-bit;;
- *) libmagic=never-match;;
- esac
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-# This must be glibc/ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-netbsd*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
- lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
- else
- lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so|_pic\.a)$'
- fi
- ;;
-
-newos6*)
- lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (executable|dynamic lib)'
- lt_cv_file_magic_cmd=/usr/bin/file
- lt_cv_file_magic_test_file=/usr/lib/libnls.so
- ;;
-
-*nto* | *qnx*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-openbsd*)
- if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|\.so|_pic\.a)$'
- else
- lt_cv_deplibs_check_method='match_pattern /lib[^/]+(\.so\.[0-9]+\.[0-9]+|_pic\.a)$'
- fi
- ;;
-
-osf3* | osf4* | osf5*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-rdos*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-solaris*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-sysv4 | sysv4.3*)
- case $host_vendor in
- motorola)
- lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [ML]SB (shared object|dynamic lib) M[0-9][0-9]* Version [0-9]'
- lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
- ;;
- ncr)
- lt_cv_deplibs_check_method=pass_all
- ;;
- sequent)
- lt_cv_file_magic_cmd='/bin/file'
- lt_cv_deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )'
- ;;
- sni)
- lt_cv_file_magic_cmd='/bin/file'
- lt_cv_deplibs_check_method="file_magic ELF [0-9][0-9]*-bit [LM]SB dynamic lib"
- lt_cv_file_magic_test_file=/lib/libc.so
- ;;
- siemens)
- lt_cv_deplibs_check_method=pass_all
- ;;
- pc)
- lt_cv_deplibs_check_method=pass_all
- ;;
- esac
- ;;
-
-tpf*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-esac
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_deplibs_check_method" >&5
-$as_echo "$lt_cv_deplibs_check_method" >&6; }
-
-file_magic_glob=
-want_nocaseglob=no
-if test "$build" = "$host"; then
- case $host_os in
- mingw* | pw32*)
- if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
- want_nocaseglob=yes
- else
- file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[\1]\/[\1]\/g;/g"`
- fi
- ;;
- esac
-fi
-
-file_magic_cmd=$lt_cv_file_magic_cmd
-deplibs_check_method=$lt_cv_deplibs_check_method
-test -z "$deplibs_check_method" && deplibs_check_method=unknown
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
-set dummy ${ac_tool_prefix}dlltool; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_DLLTOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$DLLTOOL"; then
- ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-DLLTOOL=$ac_cv_prog_DLLTOOL
-if test -n "$DLLTOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5
-$as_echo "$DLLTOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_DLLTOOL"; then
- ac_ct_DLLTOOL=$DLLTOOL
- # Extract the first word of "dlltool", so it can be a program name with args.
-set dummy dlltool; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_DLLTOOL"; then
- ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_DLLTOOL="dlltool"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL
-if test -n "$ac_ct_DLLTOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5
-$as_echo "$ac_ct_DLLTOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_DLLTOOL" = x; then
- DLLTOOL="false"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- DLLTOOL=$ac_ct_DLLTOOL
- fi
-else
- DLLTOOL="$ac_cv_prog_DLLTOOL"
-fi
-
-test -z "$DLLTOOL" && DLLTOOL=dlltool
-
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking how to associate runtime and link libraries" >&5
-$as_echo_n "checking how to associate runtime and link libraries... " >&6; }
-if ${lt_cv_sharedlib_from_linklib_cmd+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_sharedlib_from_linklib_cmd='unknown'
-
-case $host_os in
-cygwin* | mingw* | pw32* | cegcc*)
- # two different shell functions defined in ltmain.sh
- # decide which to use based on capabilities of $DLLTOOL
- case `$DLLTOOL --help 2>&1` in
- *--identify-strict*)
- lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib
- ;;
- *)
- lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback
- ;;
- esac
- ;;
-*)
- # fallback: assume linklib IS sharedlib
- lt_cv_sharedlib_from_linklib_cmd="$ECHO"
- ;;
-esac
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_sharedlib_from_linklib_cmd" >&5
-$as_echo "$lt_cv_sharedlib_from_linklib_cmd" >&6; }
-sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd
-test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO
-
-
-
-
-
-
-
-
-if test -n "$ac_tool_prefix"; then
- for ac_prog in ar
- do
- # Extract the first word of "$ac_tool_prefix$ac_prog", so it can be a program name with args.
-set dummy $ac_tool_prefix$ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_AR+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$AR"; then
- ac_cv_prog_AR="$AR" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_AR="$ac_tool_prefix$ac_prog"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-AR=$ac_cv_prog_AR
-if test -n "$AR"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AR" >&5
-$as_echo "$AR" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
- test -n "$AR" && break
- done
-fi
-if test -z "$AR"; then
- ac_ct_AR=$AR
- for ac_prog in ar
-do
- # Extract the first word of "$ac_prog", so it can be a program name with args.
-set dummy $ac_prog; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_AR+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_AR"; then
- ac_cv_prog_ac_ct_AR="$ac_ct_AR" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_AR="$ac_prog"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_AR=$ac_cv_prog_ac_ct_AR
-if test -n "$ac_ct_AR"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AR" >&5
-$as_echo "$ac_ct_AR" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
- test -n "$ac_ct_AR" && break
-done
-
- if test "x$ac_ct_AR" = x; then
- AR="false"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- AR=$ac_ct_AR
- fi
-fi
-
-: ${AR=ar}
-: ${AR_FLAGS=cru}
-
-
-
-
-
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for archiver @FILE support" >&5
-$as_echo_n "checking for archiver @FILE support... " >&6; }
-if ${lt_cv_ar_at_file+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_ar_at_file=no
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
- echo conftest.$ac_objext > conftest.lst
- lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&5'
- { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5
- (eval $lt_ar_try) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }
- if test "$ac_status" -eq 0; then
- # Ensure the archiver fails upon bogus file names.
- rm -f conftest.$ac_objext libconftest.a
- { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$lt_ar_try\""; } >&5
- (eval $lt_ar_try) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }
- if test "$ac_status" -ne 0; then
- lt_cv_ar_at_file=@
- fi
- fi
- rm -f conftest.* libconftest.a
-
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ar_at_file" >&5
-$as_echo "$lt_cv_ar_at_file" >&6; }
-
-if test "x$lt_cv_ar_at_file" = xno; then
- archiver_list_spec=
-else
- archiver_list_spec=$lt_cv_ar_at_file
-fi
-
-
-
-
-
-
-
-if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}strip", so it can be a program name with args.
-set dummy ${ac_tool_prefix}strip; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_STRIP+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$STRIP"; then
- ac_cv_prog_STRIP="$STRIP" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_STRIP="${ac_tool_prefix}strip"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-STRIP=$ac_cv_prog_STRIP
-if test -n "$STRIP"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $STRIP" >&5
-$as_echo "$STRIP" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_STRIP"; then
- ac_ct_STRIP=$STRIP
- # Extract the first word of "strip", so it can be a program name with args.
-set dummy strip; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_STRIP+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_STRIP"; then
- ac_cv_prog_ac_ct_STRIP="$ac_ct_STRIP" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_STRIP="strip"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_STRIP=$ac_cv_prog_ac_ct_STRIP
-if test -n "$ac_ct_STRIP"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_STRIP" >&5
-$as_echo "$ac_ct_STRIP" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_STRIP" = x; then
- STRIP=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- STRIP=$ac_ct_STRIP
- fi
-else
- STRIP="$ac_cv_prog_STRIP"
-fi
-
-test -z "$STRIP" && STRIP=:
-
-
-
-
-
-
-if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}ranlib", so it can be a program name with args.
-set dummy ${ac_tool_prefix}ranlib; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_RANLIB+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$RANLIB"; then
- ac_cv_prog_RANLIB="$RANLIB" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_RANLIB="${ac_tool_prefix}ranlib"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-RANLIB=$ac_cv_prog_RANLIB
-if test -n "$RANLIB"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $RANLIB" >&5
-$as_echo "$RANLIB" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_RANLIB"; then
- ac_ct_RANLIB=$RANLIB
- # Extract the first word of "ranlib", so it can be a program name with args.
-set dummy ranlib; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_RANLIB+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_RANLIB"; then
- ac_cv_prog_ac_ct_RANLIB="$ac_ct_RANLIB" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_RANLIB="ranlib"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_RANLIB=$ac_cv_prog_ac_ct_RANLIB
-if test -n "$ac_ct_RANLIB"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_RANLIB" >&5
-$as_echo "$ac_ct_RANLIB" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_RANLIB" = x; then
- RANLIB=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- RANLIB=$ac_ct_RANLIB
- fi
-else
- RANLIB="$ac_cv_prog_RANLIB"
-fi
-
-test -z "$RANLIB" && RANLIB=:
-
-
-
-
-
-
-# Determine commands to create old-style static archives.
-old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
-old_postinstall_cmds='chmod 644 $oldlib'
-old_postuninstall_cmds=
-
-if test -n "$RANLIB"; then
- case $host_os in
- openbsd*)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
- ;;
- *)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
- ;;
- esac
- old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
-fi
-
-case $host_os in
- darwin*)
- lock_old_archive_extraction=yes ;;
- *)
- lock_old_archive_extraction=no ;;
-esac
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-# If no C compiler was specified, use CC.
-LTCC=${LTCC-"$CC"}
-
-# If no C compiler flags were specified, use CFLAGS.
-LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
-
-# Allow CC to be a program name with arguments.
-compiler=$CC
-
-
-# Check for command to grab the raw symbol name followed by C symbol from nm.
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking command to parse $NM output from $compiler object" >&5
-$as_echo_n "checking command to parse $NM output from $compiler object... " >&6; }
-if ${lt_cv_sys_global_symbol_pipe+:} false; then :
- $as_echo_n "(cached) " >&6
-else
-
-# These are sane defaults that work on at least a few old systems.
-# [They come from Ultrix. What could be older than Ultrix?!! ;)]
-
-# Character class describing NM global symbol codes.
-symcode='[BCDEGRST]'
-
-# Regexp to match symbols that can be accessed directly from C.
-sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
-
-# Define system-specific variables.
-case $host_os in
-aix*)
- symcode='[BCDT]'
- ;;
-cygwin* | mingw* | pw32* | cegcc*)
- symcode='[ABCDGISTW]'
- ;;
-hpux*)
- if test "$host_cpu" = ia64; then
- symcode='[ABCDEGRST]'
- fi
- ;;
-irix* | nonstopux*)
- symcode='[BCDEGRST]'
- ;;
-osf*)
- symcode='[BCDEGQRST]'
- ;;
-solaris*)
- symcode='[BDRT]'
- ;;
-sco3.2v5*)
- symcode='[DT]'
- ;;
-sysv4.2uw2*)
- symcode='[DT]'
- ;;
-sysv5* | sco5v6* | unixware* | OpenUNIX*)
- symcode='[ABDT]'
- ;;
-sysv4)
- symcode='[DFNSTU]'
- ;;
-esac
-
-# If we're using GNU nm, then use its standard symbol codes.
-case `$NM -V 2>&1` in
-*GNU* | *'with BFD'*)
- symcode='[ABCDGIRSTW]' ;;
-esac
-
-# Transform an extracted symbol line into a proper C declaration.
-# Some systems (esp. on ia64) link data and code symbols differently,
-# so use this general approach.
-lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
-
-# Transform an extracted symbol line into symbol name and symbol address
-lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([^ ]*\)[ ]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"\2\", (void *) \&\2},/p'"
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([^ ]*\)[ ]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([^ ]*\) \(lib[^ ]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([^ ]*\) \([^ ]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
-
-# Handle CRLF in mingw tool chain
-opt_cr=
-case $build_os in
-mingw*)
- opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
- ;;
-esac
-
-# Try without a prefix underscore, then with it.
-for ac_symprfx in "" "_"; do
-
- # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
- symxfrm="\\1 $ac_symprfx\\2 \\2"
-
- # Write the raw and C identifiers.
- if test "$lt_cv_nm_interface" = "MS dumpbin"; then
- # Fake it for dumpbin and say T for any non-static function
- # and D for any global variable.
- # Also find C++ and __fastcall symbols from MSVC++,
- # which start with @ or ?.
- lt_cv_sys_global_symbol_pipe="$AWK '"\
-" {last_section=section; section=\$ 3};"\
-" /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\
-" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
-" \$ 0!~/External *\|/{next};"\
-" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
-" {if(hide[section]) next};"\
-" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
-" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
-" s[1]~/^[@?]/{print s[1], s[1]; next};"\
-" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
-" ' prfx=^$ac_symprfx"
- else
- lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[ ]\($symcode$symcode*\)[ ][ ]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
- fi
- lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
-
- # Check to see that the pipe works correctly.
- pipe_works=no
-
- rm -f conftest*
- cat > conftest.$ac_ext <<_LT_EOF
-#ifdef __cplusplus
-extern "C" {
-#endif
-char nm_test_var;
-void nm_test_func(void);
-void nm_test_func(void){}
-#ifdef __cplusplus
-}
-#endif
-int main(){nm_test_var='a';nm_test_func();return(0);}
-_LT_EOF
-
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
- (eval $ac_compile) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- # Now try to grab the symbols.
- nlist=conftest.nm
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist\""; } >&5
- (eval $NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; } && test -s "$nlist"; then
- # Try sorting and uniquifying the output.
- if sort "$nlist" | uniq > "$nlist"T; then
- mv -f "$nlist"T "$nlist"
- else
- rm -f "$nlist"T
- fi
-
- # Make sure that we snagged all the symbols we need.
- if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
- if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
- cat <<_LT_EOF > conftest.$ac_ext
-/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */
-#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
-/* DATA imports from DLLs on WIN32 con't be const, because runtime
- relocations are performed -- see ld's documentation on pseudo-relocs. */
-# define LT_DLSYM_CONST
-#elif defined(__osf__)
-/* This system does not cope well with relocations in const data. */
-# define LT_DLSYM_CONST
-#else
-# define LT_DLSYM_CONST const
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-_LT_EOF
- # Now generate the symbol file.
- eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
-
- cat <<_LT_EOF >> conftest.$ac_ext
-
-/* The mapping between symbol names and symbols. */
-LT_DLSYM_CONST struct {
- const char *name;
- void *address;
-}
-lt__PROGRAM__LTX_preloaded_symbols[] =
-{
- { "@PROGRAM@", (void *) 0 },
-_LT_EOF
- $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
- cat <<\_LT_EOF >> conftest.$ac_ext
- {0, (void *) 0}
-};
-
-/* This works around a problem in FreeBSD linker */
-#ifdef FREEBSD_WORKAROUND
-static const void *lt_preloaded_setup() {
- return lt__PROGRAM__LTX_preloaded_symbols;
-}
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-_LT_EOF
- # Now try linking the two files.
- mv conftest.$ac_objext conftstm.$ac_objext
- lt_globsym_save_LIBS=$LIBS
- lt_globsym_save_CFLAGS=$CFLAGS
- LIBS="conftstm.$ac_objext"
- CFLAGS="$CFLAGS$lt_prog_compiler_no_builtin_flag"
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
- (eval $ac_link) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; } && test -s conftest${ac_exeext}; then
- pipe_works=yes
- fi
- LIBS=$lt_globsym_save_LIBS
- CFLAGS=$lt_globsym_save_CFLAGS
- else
- echo "cannot find nm_test_func in $nlist" >&5
- fi
- else
- echo "cannot find nm_test_var in $nlist" >&5
- fi
- else
- echo "cannot run $lt_cv_sys_global_symbol_pipe" >&5
- fi
- else
- echo "$progname: failed program was:" >&5
- cat conftest.$ac_ext >&5
- fi
- rm -rf conftest* conftst*
-
- # Do not use the global_symbol_pipe unless it works.
- if test "$pipe_works" = yes; then
- break
- else
- lt_cv_sys_global_symbol_pipe=
- fi
-done
-
-fi
-
-if test -z "$lt_cv_sys_global_symbol_pipe"; then
- lt_cv_sys_global_symbol_to_cdecl=
-fi
-if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: failed" >&5
-$as_echo "failed" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: ok" >&5
-$as_echo "ok" >&6; }
-fi
-
-# Response file support.
-if test "$lt_cv_nm_interface" = "MS dumpbin"; then
- nm_file_list_spec='@'
-elif $NM --help 2>/dev/null | grep '[@]FILE' >/dev/null; then
- nm_file_list_spec='@'
-fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for sysroot" >&5
-$as_echo_n "checking for sysroot... " >&6; }
-
-# Check whether --with-sysroot was given.
-if test "${with_sysroot+set}" = set; then :
- withval=$with_sysroot;
-else
- with_sysroot=no
-fi
-
-
-lt_sysroot=
-case ${with_sysroot} in #(
- yes)
- if test "$GCC" = yes; then
- lt_sysroot=`$CC --print-sysroot 2>/dev/null`
- fi
- ;; #(
- /*)
- lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
- ;; #(
- no|'')
- ;; #(
- *)
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${with_sysroot}" >&5
-$as_echo "${with_sysroot}" >&6; }
- as_fn_error $? "The sysroot must be an absolute path." "$LINENO" 5
- ;;
-esac
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: ${lt_sysroot:-no}" >&5
-$as_echo "${lt_sysroot:-no}" >&6; }
-
-
-
-
-
-# Check whether --enable-libtool-lock was given.
-if test "${enable_libtool_lock+set}" = set; then :
- enableval=$enable_libtool_lock;
-fi
-
-test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
-
-# Some flags need to be propagated to the compiler or linker for good
-# libtool support.
-case $host in
-ia64-*-hpux*)
- # Find out which ABI we are using.
- echo 'int i;' > conftest.$ac_ext
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
- (eval $ac_compile) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- case `/usr/bin/file conftest.$ac_objext` in
- *ELF-32*)
- HPUX_IA64_MODE="32"
- ;;
- *ELF-64*)
- HPUX_IA64_MODE="64"
- ;;
- esac
- fi
- rm -rf conftest*
- ;;
-*-*-irix6*)
- # Find out which ABI we are using.
- echo '#line '$LINENO' "configure"' > conftest.$ac_ext
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
- (eval $ac_compile) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- if test "$lt_cv_prog_gnu_ld" = yes; then
- case `/usr/bin/file conftest.$ac_objext` in
- *32-bit*)
- LD="${LD-ld} -melf32bsmip"
- ;;
- *N32*)
- LD="${LD-ld} -melf32bmipn32"
- ;;
- *64-bit*)
- LD="${LD-ld} -melf64bmip"
- ;;
- esac
- else
- case `/usr/bin/file conftest.$ac_objext` in
- *32-bit*)
- LD="${LD-ld} -32"
- ;;
- *N32*)
- LD="${LD-ld} -n32"
- ;;
- *64-bit*)
- LD="${LD-ld} -64"
- ;;
- esac
- fi
- fi
- rm -rf conftest*
- ;;
-
-x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
-s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
- # Find out which ABI we are using.
- echo 'int i;' > conftest.$ac_ext
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
- (eval $ac_compile) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- case `/usr/bin/file conftest.o` in
- *32-bit*)
- case $host in
- x86_64-*kfreebsd*-gnu)
- LD="${LD-ld} -m elf_i386_fbsd"
- ;;
- x86_64-*linux*)
- LD="${LD-ld} -m elf_i386"
- ;;
- ppc64-*linux*|powerpc64-*linux*)
- LD="${LD-ld} -m elf32ppclinux"
- ;;
- s390x-*linux*)
- LD="${LD-ld} -m elf_s390"
- ;;
- sparc64-*linux*)
- LD="${LD-ld} -m elf32_sparc"
- ;;
- esac
- ;;
- *64-bit*)
- case $host in
- x86_64-*kfreebsd*-gnu)
- LD="${LD-ld} -m elf_x86_64_fbsd"
- ;;
- x86_64-*linux*)
- LD="${LD-ld} -m elf_x86_64"
- ;;
- ppc*-*linux*|powerpc*-*linux*)
- LD="${LD-ld} -m elf64ppc"
- ;;
- s390*-*linux*|s390*-*tpf*)
- LD="${LD-ld} -m elf64_s390"
- ;;
- sparc*-*linux*)
- LD="${LD-ld} -m elf64_sparc"
- ;;
- esac
- ;;
- esac
- fi
- rm -rf conftest*
- ;;
-
-*-*-sco3.2v5*)
- # On SCO OpenServer 5, we need -belf to get full-featured binaries.
- SAVE_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -belf"
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the C compiler needs -belf" >&5
-$as_echo_n "checking whether the C compiler needs -belf... " >&6; }
-if ${lt_cv_cc_needs_belf+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- lt_cv_cc_needs_belf=yes
-else
- lt_cv_cc_needs_belf=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_cc_needs_belf" >&5
-$as_echo "$lt_cv_cc_needs_belf" >&6; }
- if test x"$lt_cv_cc_needs_belf" != x"yes"; then
- # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
- CFLAGS="$SAVE_CFLAGS"
- fi
- ;;
-*-*solaris*)
- # Find out which ABI we are using.
- echo 'int i;' > conftest.$ac_ext
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
- (eval $ac_compile) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }; then
- case `/usr/bin/file conftest.o` in
- *64-bit*)
- case $lt_cv_prog_gnu_ld in
- yes*)
- case $host in
- i?86-*-solaris*)
- LD="${LD-ld} -m elf_x86_64"
- ;;
- sparc*-*-solaris*)
- LD="${LD-ld} -m elf64_sparc"
- ;;
- esac
- # GNU ld 2.21 introduced _sol2 emulations. Use them if available.
- if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then
- LD="${LD-ld}_sol2"
- fi
- ;;
- *)
- if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
- LD="${LD-ld} -64"
- fi
- ;;
- esac
- ;;
- esac
- fi
- rm -rf conftest*
- ;;
-esac
-
-need_locks="$enable_libtool_lock"
-
-if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}mt", so it can be a program name with args.
-set dummy ${ac_tool_prefix}mt; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_MANIFEST_TOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$MANIFEST_TOOL"; then
- ac_cv_prog_MANIFEST_TOOL="$MANIFEST_TOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_MANIFEST_TOOL="${ac_tool_prefix}mt"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-MANIFEST_TOOL=$ac_cv_prog_MANIFEST_TOOL
-if test -n "$MANIFEST_TOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MANIFEST_TOOL" >&5
-$as_echo "$MANIFEST_TOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_MANIFEST_TOOL"; then
- ac_ct_MANIFEST_TOOL=$MANIFEST_TOOL
- # Extract the first word of "mt", so it can be a program name with args.
-set dummy mt; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_MANIFEST_TOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_MANIFEST_TOOL"; then
- ac_cv_prog_ac_ct_MANIFEST_TOOL="$ac_ct_MANIFEST_TOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_MANIFEST_TOOL="mt"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_MANIFEST_TOOL=$ac_cv_prog_ac_ct_MANIFEST_TOOL
-if test -n "$ac_ct_MANIFEST_TOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_MANIFEST_TOOL" >&5
-$as_echo "$ac_ct_MANIFEST_TOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_MANIFEST_TOOL" = x; then
- MANIFEST_TOOL=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- MANIFEST_TOOL=$ac_ct_MANIFEST_TOOL
- fi
-else
- MANIFEST_TOOL="$ac_cv_prog_MANIFEST_TOOL"
-fi
-
-test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $MANIFEST_TOOL is a manifest tool" >&5
-$as_echo_n "checking if $MANIFEST_TOOL is a manifest tool... " >&6; }
-if ${lt_cv_path_mainfest_tool+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_path_mainfest_tool=no
- echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&5
- $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
- cat conftest.err >&5
- if $GREP 'Manifest Tool' conftest.out > /dev/null; then
- lt_cv_path_mainfest_tool=yes
- fi
- rm -f conftest*
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_path_mainfest_tool" >&5
-$as_echo "$lt_cv_path_mainfest_tool" >&6; }
-if test "x$lt_cv_path_mainfest_tool" != xyes; then
- MANIFEST_TOOL=:
-fi
-
-
-
-
-
-
- case $host_os in
- rhapsody* | darwin*)
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}dsymutil", so it can be a program name with args.
-set dummy ${ac_tool_prefix}dsymutil; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_DSYMUTIL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$DSYMUTIL"; then
- ac_cv_prog_DSYMUTIL="$DSYMUTIL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_DSYMUTIL="${ac_tool_prefix}dsymutil"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-DSYMUTIL=$ac_cv_prog_DSYMUTIL
-if test -n "$DSYMUTIL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DSYMUTIL" >&5
-$as_echo "$DSYMUTIL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_DSYMUTIL"; then
- ac_ct_DSYMUTIL=$DSYMUTIL
- # Extract the first word of "dsymutil", so it can be a program name with args.
-set dummy dsymutil; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_DSYMUTIL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_DSYMUTIL"; then
- ac_cv_prog_ac_ct_DSYMUTIL="$ac_ct_DSYMUTIL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_DSYMUTIL="dsymutil"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_DSYMUTIL=$ac_cv_prog_ac_ct_DSYMUTIL
-if test -n "$ac_ct_DSYMUTIL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DSYMUTIL" >&5
-$as_echo "$ac_ct_DSYMUTIL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_DSYMUTIL" = x; then
- DSYMUTIL=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- DSYMUTIL=$ac_ct_DSYMUTIL
- fi
-else
- DSYMUTIL="$ac_cv_prog_DSYMUTIL"
-fi
-
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}nmedit", so it can be a program name with args.
-set dummy ${ac_tool_prefix}nmedit; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_NMEDIT+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$NMEDIT"; then
- ac_cv_prog_NMEDIT="$NMEDIT" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_NMEDIT="${ac_tool_prefix}nmedit"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-NMEDIT=$ac_cv_prog_NMEDIT
-if test -n "$NMEDIT"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $NMEDIT" >&5
-$as_echo "$NMEDIT" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_NMEDIT"; then
- ac_ct_NMEDIT=$NMEDIT
- # Extract the first word of "nmedit", so it can be a program name with args.
-set dummy nmedit; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_NMEDIT+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_NMEDIT"; then
- ac_cv_prog_ac_ct_NMEDIT="$ac_ct_NMEDIT" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_NMEDIT="nmedit"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_NMEDIT=$ac_cv_prog_ac_ct_NMEDIT
-if test -n "$ac_ct_NMEDIT"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_NMEDIT" >&5
-$as_echo "$ac_ct_NMEDIT" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_NMEDIT" = x; then
- NMEDIT=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- NMEDIT=$ac_ct_NMEDIT
- fi
-else
- NMEDIT="$ac_cv_prog_NMEDIT"
-fi
-
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}lipo", so it can be a program name with args.
-set dummy ${ac_tool_prefix}lipo; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_LIPO+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$LIPO"; then
- ac_cv_prog_LIPO="$LIPO" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_LIPO="${ac_tool_prefix}lipo"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-LIPO=$ac_cv_prog_LIPO
-if test -n "$LIPO"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $LIPO" >&5
-$as_echo "$LIPO" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_LIPO"; then
- ac_ct_LIPO=$LIPO
- # Extract the first word of "lipo", so it can be a program name with args.
-set dummy lipo; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_LIPO+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_LIPO"; then
- ac_cv_prog_ac_ct_LIPO="$ac_ct_LIPO" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_LIPO="lipo"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_LIPO=$ac_cv_prog_ac_ct_LIPO
-if test -n "$ac_ct_LIPO"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_LIPO" >&5
-$as_echo "$ac_ct_LIPO" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_LIPO" = x; then
- LIPO=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- LIPO=$ac_ct_LIPO
- fi
-else
- LIPO="$ac_cv_prog_LIPO"
-fi
-
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}otool", so it can be a program name with args.
-set dummy ${ac_tool_prefix}otool; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_OTOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$OTOOL"; then
- ac_cv_prog_OTOOL="$OTOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_OTOOL="${ac_tool_prefix}otool"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-OTOOL=$ac_cv_prog_OTOOL
-if test -n "$OTOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL" >&5
-$as_echo "$OTOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_OTOOL"; then
- ac_ct_OTOOL=$OTOOL
- # Extract the first word of "otool", so it can be a program name with args.
-set dummy otool; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_OTOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_OTOOL"; then
- ac_cv_prog_ac_ct_OTOOL="$ac_ct_OTOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_OTOOL="otool"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_OTOOL=$ac_cv_prog_ac_ct_OTOOL
-if test -n "$ac_ct_OTOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL" >&5
-$as_echo "$ac_ct_OTOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_OTOOL" = x; then
- OTOOL=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- OTOOL=$ac_ct_OTOOL
- fi
-else
- OTOOL="$ac_cv_prog_OTOOL"
-fi
-
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}otool64", so it can be a program name with args.
-set dummy ${ac_tool_prefix}otool64; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_OTOOL64+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$OTOOL64"; then
- ac_cv_prog_OTOOL64="$OTOOL64" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_OTOOL64="${ac_tool_prefix}otool64"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-OTOOL64=$ac_cv_prog_OTOOL64
-if test -n "$OTOOL64"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OTOOL64" >&5
-$as_echo "$OTOOL64" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_OTOOL64"; then
- ac_ct_OTOOL64=$OTOOL64
- # Extract the first word of "otool64", so it can be a program name with args.
-set dummy otool64; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_OTOOL64+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_OTOOL64"; then
- ac_cv_prog_ac_ct_OTOOL64="$ac_ct_OTOOL64" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_OTOOL64="otool64"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_OTOOL64=$ac_cv_prog_ac_ct_OTOOL64
-if test -n "$ac_ct_OTOOL64"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OTOOL64" >&5
-$as_echo "$ac_ct_OTOOL64" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_OTOOL64" = x; then
- OTOOL64=":"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- OTOOL64=$ac_ct_OTOOL64
- fi
-else
- OTOOL64="$ac_cv_prog_OTOOL64"
-fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -single_module linker flag" >&5
-$as_echo_n "checking for -single_module linker flag... " >&6; }
-if ${lt_cv_apple_cc_single_mod+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_apple_cc_single_mod=no
- if test -z "${LT_MULTI_MODULE}"; then
- # By default we will add the -single_module flag. You can override
- # by either setting the environment variable LT_MULTI_MODULE
- # non-empty at configure time, or by adding -multi_module to the
- # link flags.
- rm -rf libconftest.dylib*
- echo "int foo(void){return 1;}" > conftest.c
- echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
--dynamiclib -Wl,-single_module conftest.c" >&5
- $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
- -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
- _lt_result=$?
- # If there is a non-empty error log, and "single_module"
- # appears in it, assume the flag caused a linker warning
- if test -s conftest.err && $GREP single_module conftest.err; then
- cat conftest.err >&5
- # Otherwise, if the output was created with a 0 exit code from
- # the compiler, it worked.
- elif test -f libconftest.dylib && test $_lt_result -eq 0; then
- lt_cv_apple_cc_single_mod=yes
- else
- cat conftest.err >&5
- fi
- rm -rf libconftest.dylib*
- rm -f conftest.*
- fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_apple_cc_single_mod" >&5
-$as_echo "$lt_cv_apple_cc_single_mod" >&6; }
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -exported_symbols_list linker flag" >&5
-$as_echo_n "checking for -exported_symbols_list linker flag... " >&6; }
-if ${lt_cv_ld_exported_symbols_list+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_ld_exported_symbols_list=no
- save_LDFLAGS=$LDFLAGS
- echo "_main" > conftest.sym
- LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- lt_cv_ld_exported_symbols_list=yes
-else
- lt_cv_ld_exported_symbols_list=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- LDFLAGS="$save_LDFLAGS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_exported_symbols_list" >&5
-$as_echo "$lt_cv_ld_exported_symbols_list" >&6; }
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for -force_load linker flag" >&5
-$as_echo_n "checking for -force_load linker flag... " >&6; }
-if ${lt_cv_ld_force_load+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_ld_force_load=no
- cat > conftest.c << _LT_EOF
-int forced_loaded() { return 2;}
-_LT_EOF
- echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&5
- $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&5
- echo "$AR cru libconftest.a conftest.o" >&5
- $AR cru libconftest.a conftest.o 2>&5
- echo "$RANLIB libconftest.a" >&5
- $RANLIB libconftest.a 2>&5
- cat > conftest.c << _LT_EOF
-int main() { return 0;}
-_LT_EOF
- echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&5
- $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
- _lt_result=$?
- if test -s conftest.err && $GREP force_load conftest.err; then
- cat conftest.err >&5
- elif test -f conftest && test $_lt_result -eq 0 && $GREP forced_load conftest >/dev/null 2>&1 ; then
- lt_cv_ld_force_load=yes
- else
- cat conftest.err >&5
- fi
- rm -f conftest.err libconftest.a conftest conftest.c
- rm -rf conftest.dSYM
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_ld_force_load" >&5
-$as_echo "$lt_cv_ld_force_load" >&6; }
- case $host_os in
- rhapsody* | darwin1.[012])
- _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
- darwin1.*)
- _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
- darwin*) # darwin 5.x on
- # if running on 10.5 or later, the deployment target defaults
- # to the OS version, if on x86, and 10.4, the deployment
- # target defaults to 10.4. Don't you love it?
- case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
- 10.0,*86*-darwin8*|10.0,*-darwin[91]*)
- _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
- 10.[012]*)
- _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
- 10.*)
- _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
- esac
- ;;
- esac
- if test "$lt_cv_apple_cc_single_mod" = "yes"; then
- _lt_dar_single_mod='$single_module'
- fi
- if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
- _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
- else
- _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
- fi
- if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
- _lt_dsymutil='~$DSYMUTIL $lib || :'
- else
- _lt_dsymutil=
- fi
- ;;
- esac
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for ANSI C header files" >&5
-$as_echo_n "checking for ANSI C header files... " >&6; }
-if ${ac_cv_header_stdc+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <stdlib.h>
-#include <stdarg.h>
-#include <string.h>
-#include <float.h>
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_compile "$LINENO"; then :
- ac_cv_header_stdc=yes
-else
- ac_cv_header_stdc=no
-fi
-rm -f core conftest.err conftest.$ac_objext conftest.$ac_ext
-
-if test $ac_cv_header_stdc = yes; then
- # SunOS 4.x string.h does not declare mem*, contrary to ANSI.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <string.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
- $EGREP "memchr" >/dev/null 2>&1; then :
-
-else
- ac_cv_header_stdc=no
-fi
-rm -f conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
- # ISC 2.0.2 stdlib.h does not declare free, contrary to ANSI.
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <stdlib.h>
-
-_ACEOF
-if (eval "$ac_cpp conftest.$ac_ext") 2>&5 |
- $EGREP "free" >/dev/null 2>&1; then :
-
-else
- ac_cv_header_stdc=no
-fi
-rm -f conftest*
-
-fi
-
-if test $ac_cv_header_stdc = yes; then
- # /bin/cc in Irix-4.0.5 gets non-ANSI ctype macros unless using -ansi.
- if test "$cross_compiling" = yes; then :
- :
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-#include <ctype.h>
-#include <stdlib.h>
-#if ((' ' & 0x0FF) == 0x020)
-# define ISLOWER(c) ('a' <= (c) && (c) <= 'z')
-# define TOUPPER(c) (ISLOWER(c) ? 'A' + ((c) - 'a') : (c))
-#else
-# define ISLOWER(c) \
- (('a' <= (c) && (c) <= 'i') \
- || ('j' <= (c) && (c) <= 'r') \
- || ('s' <= (c) && (c) <= 'z'))
-# define TOUPPER(c) (ISLOWER(c) ? ((c) | 0x40) : (c))
-#endif
-
-#define XOR(e, f) (((e) && !(f)) || (!(e) && (f)))
-int
-main ()
-{
- int i;
- for (i = 0; i < 256; i++)
- if (XOR (islower (i), ISLOWER (i))
- || toupper (i) != TOUPPER (i))
- return 2;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_run "$LINENO"; then :
-
-else
- ac_cv_header_stdc=no
-fi
-rm -f core *.core core.conftest.* gmon.out bb.out conftest$ac_exeext \
- conftest.$ac_objext conftest.beam conftest.$ac_ext
-fi
-
-fi
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_header_stdc" >&5
-$as_echo "$ac_cv_header_stdc" >&6; }
-if test $ac_cv_header_stdc = yes; then
-
-$as_echo "#define STDC_HEADERS 1" >>confdefs.h
-
-fi
-
-# On IRIX 5.3, sys/types and inttypes.h are conflicting.
-for ac_header in sys/types.h sys/stat.h stdlib.h string.h memory.h strings.h \
- inttypes.h stdint.h unistd.h
-do :
- as_ac_Header=`$as_echo "ac_cv_header_$ac_header" | $as_tr_sh`
-ac_fn_c_check_header_compile "$LINENO" "$ac_header" "$as_ac_Header" "$ac_includes_default
-"
-if eval test \"x\$"$as_ac_Header"\" = x"yes"; then :
- cat >>confdefs.h <<_ACEOF
-#define `$as_echo "HAVE_$ac_header" | $as_tr_cpp` 1
-_ACEOF
-
-fi
-
-done
-
-
-for ac_header in dlfcn.h
-do :
- ac_fn_c_check_header_compile "$LINENO" "dlfcn.h" "ac_cv_header_dlfcn_h" "$ac_includes_default
-"
-if test "x$ac_cv_header_dlfcn_h" = xyes; then :
- cat >>confdefs.h <<_ACEOF
-#define HAVE_DLFCN_H 1
-_ACEOF
-
-fi
-
-done
-
-
-
-
-
-# Set options
-enable_win32_dll=yes
-
-case $host in
-*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}as", so it can be a program name with args.
-set dummy ${ac_tool_prefix}as; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_AS+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$AS"; then
- ac_cv_prog_AS="$AS" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_AS="${ac_tool_prefix}as"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-AS=$ac_cv_prog_AS
-if test -n "$AS"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $AS" >&5
-$as_echo "$AS" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_AS"; then
- ac_ct_AS=$AS
- # Extract the first word of "as", so it can be a program name with args.
-set dummy as; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_AS+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_AS"; then
- ac_cv_prog_ac_ct_AS="$ac_ct_AS" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_AS="as"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_AS=$ac_cv_prog_ac_ct_AS
-if test -n "$ac_ct_AS"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_AS" >&5
-$as_echo "$ac_ct_AS" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_AS" = x; then
- AS="false"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- AS=$ac_ct_AS
- fi
-else
- AS="$ac_cv_prog_AS"
-fi
-
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}dlltool", so it can be a program name with args.
-set dummy ${ac_tool_prefix}dlltool; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_DLLTOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$DLLTOOL"; then
- ac_cv_prog_DLLTOOL="$DLLTOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_DLLTOOL="${ac_tool_prefix}dlltool"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-DLLTOOL=$ac_cv_prog_DLLTOOL
-if test -n "$DLLTOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $DLLTOOL" >&5
-$as_echo "$DLLTOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_DLLTOOL"; then
- ac_ct_DLLTOOL=$DLLTOOL
- # Extract the first word of "dlltool", so it can be a program name with args.
-set dummy dlltool; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_DLLTOOL+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_DLLTOOL"; then
- ac_cv_prog_ac_ct_DLLTOOL="$ac_ct_DLLTOOL" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_DLLTOOL="dlltool"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_DLLTOOL=$ac_cv_prog_ac_ct_DLLTOOL
-if test -n "$ac_ct_DLLTOOL"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_DLLTOOL" >&5
-$as_echo "$ac_ct_DLLTOOL" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_DLLTOOL" = x; then
- DLLTOOL="false"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- DLLTOOL=$ac_ct_DLLTOOL
- fi
-else
- DLLTOOL="$ac_cv_prog_DLLTOOL"
-fi
-
- if test -n "$ac_tool_prefix"; then
- # Extract the first word of "${ac_tool_prefix}objdump", so it can be a program name with args.
-set dummy ${ac_tool_prefix}objdump; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_OBJDUMP+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$OBJDUMP"; then
- ac_cv_prog_OBJDUMP="$OBJDUMP" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_OBJDUMP="${ac_tool_prefix}objdump"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-OBJDUMP=$ac_cv_prog_OBJDUMP
-if test -n "$OBJDUMP"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $OBJDUMP" >&5
-$as_echo "$OBJDUMP" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-fi
-if test -z "$ac_cv_prog_OBJDUMP"; then
- ac_ct_OBJDUMP=$OBJDUMP
- # Extract the first word of "objdump", so it can be a program name with args.
-set dummy objdump; ac_word=$2
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $ac_word" >&5
-$as_echo_n "checking for $ac_word... " >&6; }
-if ${ac_cv_prog_ac_ct_OBJDUMP+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test -n "$ac_ct_OBJDUMP"; then
- ac_cv_prog_ac_ct_OBJDUMP="$ac_ct_OBJDUMP" # Let the user override the test.
-else
-as_save_IFS=$IFS; IFS=$PATH_SEPARATOR
-for as_dir in $PATH
-do
- IFS=$as_save_IFS
- test -z "$as_dir" && as_dir=.
- for ac_exec_ext in '' $ac_executable_extensions; do
- if as_fn_executable_p "$as_dir/$ac_word$ac_exec_ext"; then
- ac_cv_prog_ac_ct_OBJDUMP="objdump"
- $as_echo "$as_me:${as_lineno-$LINENO}: found $as_dir/$ac_word$ac_exec_ext" >&5
- break 2
- fi
-done
- done
-IFS=$as_save_IFS
-
-fi
-fi
-ac_ct_OBJDUMP=$ac_cv_prog_ac_ct_OBJDUMP
-if test -n "$ac_ct_OBJDUMP"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_ct_OBJDUMP" >&5
-$as_echo "$ac_ct_OBJDUMP" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
- if test "x$ac_ct_OBJDUMP" = x; then
- OBJDUMP="false"
- else
- case $cross_compiling:$ac_tool_warned in
-yes:)
-{ $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: using cross tools not prefixed with host triplet" >&5
-$as_echo "$as_me: WARNING: using cross tools not prefixed with host triplet" >&2;}
-ac_tool_warned=yes ;;
-esac
- OBJDUMP=$ac_ct_OBJDUMP
- fi
-else
- OBJDUMP="$ac_cv_prog_OBJDUMP"
-fi
-
- ;;
-esac
-
-test -z "$AS" && AS=as
-
-
-
-
-
-test -z "$DLLTOOL" && DLLTOOL=dlltool
-
-
-
-
-
-test -z "$OBJDUMP" && OBJDUMP=objdump
-
-
-
-
-
-
-
- enable_dlopen=no
-
-
-
- # Check whether --enable-shared was given.
-if test "${enable_shared+set}" = set; then :
- enableval=$enable_shared; p=${PACKAGE-default}
- case $enableval in
- yes) enable_shared=yes ;;
- no) enable_shared=no ;;
- *)
- enable_shared=no
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for pkg in $enableval; do
- IFS="$lt_save_ifs"
- if test "X$pkg" = "X$p"; then
- enable_shared=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac
-else
- enable_shared=yes
-fi
-
-
-
-
-
-
-
-
-
- # Check whether --enable-static was given.
-if test "${enable_static+set}" = set; then :
- enableval=$enable_static; p=${PACKAGE-default}
- case $enableval in
- yes) enable_static=yes ;;
- no) enable_static=no ;;
- *)
- enable_static=no
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for pkg in $enableval; do
- IFS="$lt_save_ifs"
- if test "X$pkg" = "X$p"; then
- enable_static=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac
-else
- enable_static=yes
-fi
-
-
-
-
-
-
-
-
-
-
-# Check whether --with-pic was given.
-if test "${with_pic+set}" = set; then :
- withval=$with_pic; lt_p=${PACKAGE-default}
- case $withval in
- yes|no) pic_mode=$withval ;;
- *)
- pic_mode=default
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for lt_pkg in $withval; do
- IFS="$lt_save_ifs"
- if test "X$lt_pkg" = "X$lt_p"; then
- pic_mode=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac
-else
- pic_mode=default
-fi
-
-
-test -z "$pic_mode" && pic_mode=default
-
-
-
-
-
-
-
- # Check whether --enable-fast-install was given.
-if test "${enable_fast_install+set}" = set; then :
- enableval=$enable_fast_install; p=${PACKAGE-default}
- case $enableval in
- yes) enable_fast_install=yes ;;
- no) enable_fast_install=no ;;
- *)
- enable_fast_install=no
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for pkg in $enableval; do
- IFS="$lt_save_ifs"
- if test "X$pkg" = "X$p"; then
- enable_fast_install=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac
-else
- enable_fast_install=yes
-fi
-
-
-
-
-
-
-
-
-
-
-
-# This can be used to rebuild libtool when needed
-LIBTOOL_DEPS="$ltmain"
-
-# Always use our own libtool.
-LIBTOOL='$(SHELL) $(top_builddir)/libtool'
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-test -z "$LN_S" && LN_S="ln -s"
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-if test -n "${ZSH_VERSION+set}" ; then
- setopt NO_GLOB_SUBST
-fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for objdir" >&5
-$as_echo_n "checking for objdir... " >&6; }
-if ${lt_cv_objdir+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- rm -f .libs 2>/dev/null
-mkdir .libs 2>/dev/null
-if test -d .libs; then
- lt_cv_objdir=.libs
-else
- # MS-DOS does not allow filenames that begin with a dot.
- lt_cv_objdir=_libs
-fi
-rmdir .libs 2>/dev/null
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_objdir" >&5
-$as_echo "$lt_cv_objdir" >&6; }
-objdir=$lt_cv_objdir
-
-
-
-
-
-cat >>confdefs.h <<_ACEOF
-#define LT_OBJDIR "$lt_cv_objdir/"
-_ACEOF
-
-
-
-
-case $host_os in
-aix3*)
- # AIX sometimes has problems with the GCC collect2 program. For some
- # reason, if we set the COLLECT_NAMES environment variable, the problems
- # vanish in a puff of smoke.
- if test "X${COLLECT_NAMES+set}" != Xset; then
- COLLECT_NAMES=
- export COLLECT_NAMES
- fi
- ;;
-esac
-
-# Global variables:
-ofile=libtool
-can_build_shared=yes
-
-# All known linkers require a `.a' archive for static linking (except MSVC,
-# which needs '.lib').
-libext=a
-
-with_gnu_ld="$lt_cv_prog_gnu_ld"
-
-old_CC="$CC"
-old_CFLAGS="$CFLAGS"
-
-# Set sane defaults for various variables
-test -z "$CC" && CC=cc
-test -z "$LTCC" && LTCC=$CC
-test -z "$LTCFLAGS" && LTCFLAGS=$CFLAGS
-test -z "$LD" && LD=ld
-test -z "$ac_objext" && ac_objext=o
-
-for cc_temp in $compiler""; do
- case $cc_temp in
- compile | *[\\/]compile | ccache | *[\\/]ccache ) ;;
- distcc | *[\\/]distcc | purify | *[\\/]purify ) ;;
- \-*) ;;
- *) break;;
- esac
-done
-cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
-
-
-# Only perform the check for file, if the check method requires it
-test -z "$MAGIC_CMD" && MAGIC_CMD=file
-case $deplibs_check_method in
-file_magic*)
- if test "$file_magic_cmd" = '$MAGIC_CMD'; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for ${ac_tool_prefix}file" >&5
-$as_echo_n "checking for ${ac_tool_prefix}file... " >&6; }
-if ${lt_cv_path_MAGIC_CMD+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- case $MAGIC_CMD in
-[\\/*] | ?:[\\/]*)
- lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
- ;;
-*)
- lt_save_MAGIC_CMD="$MAGIC_CMD"
- lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
- ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
- for ac_dir in $ac_dummy; do
- IFS="$lt_save_ifs"
- test -z "$ac_dir" && ac_dir=.
- if test -f $ac_dir/${ac_tool_prefix}file; then
- lt_cv_path_MAGIC_CMD="$ac_dir/${ac_tool_prefix}file"
- if test -n "$file_magic_test_file"; then
- case $deplibs_check_method in
- "file_magic "*)
- file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
- MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
- if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
- $EGREP "$file_magic_regex" > /dev/null; then
- :
- else
- cat <<_LT_EOF 1>&2
-
-*** Warning: the command libtool uses to detect shared libraries,
-*** $file_magic_cmd, produces output that libtool cannot recognize.
-*** The result is that libtool may fail to recognize shared libraries
-*** as such. This will affect the creation of libtool libraries that
-*** depend on shared libraries, but programs linked with such libtool
-*** libraries will work regardless of this problem. Nevertheless, you
-*** may want to report the problem to your system manager and/or to
-*** bug-libtool@gnu.org
-
-_LT_EOF
- fi ;;
- esac
- fi
- break
- fi
- done
- IFS="$lt_save_ifs"
- MAGIC_CMD="$lt_save_MAGIC_CMD"
- ;;
-esac
-fi
-
-MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
-if test -n "$MAGIC_CMD"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
-$as_echo "$MAGIC_CMD" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
-
-
-
-if test -z "$lt_cv_path_MAGIC_CMD"; then
- if test -n "$ac_tool_prefix"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for file" >&5
-$as_echo_n "checking for file... " >&6; }
-if ${lt_cv_path_MAGIC_CMD+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- case $MAGIC_CMD in
-[\\/*] | ?:[\\/]*)
- lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
- ;;
-*)
- lt_save_MAGIC_CMD="$MAGIC_CMD"
- lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
- ac_dummy="/usr/bin$PATH_SEPARATOR$PATH"
- for ac_dir in $ac_dummy; do
- IFS="$lt_save_ifs"
- test -z "$ac_dir" && ac_dir=.
- if test -f $ac_dir/file; then
- lt_cv_path_MAGIC_CMD="$ac_dir/file"
- if test -n "$file_magic_test_file"; then
- case $deplibs_check_method in
- "file_magic "*)
- file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
- MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
- if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
- $EGREP "$file_magic_regex" > /dev/null; then
- :
- else
- cat <<_LT_EOF 1>&2
-
-*** Warning: the command libtool uses to detect shared libraries,
-*** $file_magic_cmd, produces output that libtool cannot recognize.
-*** The result is that libtool may fail to recognize shared libraries
-*** as such. This will affect the creation of libtool libraries that
-*** depend on shared libraries, but programs linked with such libtool
-*** libraries will work regardless of this problem. Nevertheless, you
-*** may want to report the problem to your system manager and/or to
-*** bug-libtool@gnu.org
-
-_LT_EOF
- fi ;;
- esac
- fi
- break
- fi
- done
- IFS="$lt_save_ifs"
- MAGIC_CMD="$lt_save_MAGIC_CMD"
- ;;
-esac
-fi
-
-MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
-if test -n "$MAGIC_CMD"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: $MAGIC_CMD" >&5
-$as_echo "$MAGIC_CMD" >&6; }
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: no" >&5
-$as_echo "no" >&6; }
-fi
-
-
- else
- MAGIC_CMD=:
- fi
-fi
-
- fi
- ;;
-esac
-
-# Use C for the default configuration in the libtool script
-
-lt_save_CC="$CC"
-ac_ext=c
-ac_cpp='$CPP $CPPFLAGS'
-ac_compile='$CC -c $CFLAGS $CPPFLAGS conftest.$ac_ext >&5'
-ac_link='$CC -o conftest$ac_exeext $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS >&5'
-ac_compiler_gnu=$ac_cv_c_compiler_gnu
-
-
-# Source file extension for C test sources.
-ac_ext=c
-
-# Object file extension for compiled C test sources.
-objext=o
-objext=$objext
-
-# Code to be used in simple compile tests
-lt_simple_compile_test_code="int some_variable = 0;"
-
-# Code to be used in simple link tests
-lt_simple_link_test_code='int main(){return(0);}'
-
-
-
-
-
-
-
-# If no C compiler was specified, use CC.
-LTCC=${LTCC-"$CC"}
-
-# If no C compiler flags were specified, use CFLAGS.
-LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
-
-# Allow CC to be a program name with arguments.
-compiler=$CC
-
-# Save the default compiler, since it gets overwritten when the other
-# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
-compiler_DEFAULT=$CC
-
-# save warnings/boilerplate of simple test code
-ac_outfile=conftest.$ac_objext
-echo "$lt_simple_compile_test_code" >conftest.$ac_ext
-eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
-_lt_compiler_boilerplate=`cat conftest.err`
-$RM conftest*
-
-ac_outfile=conftest.$ac_objext
-echo "$lt_simple_link_test_code" >conftest.$ac_ext
-eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
-_lt_linker_boilerplate=`cat conftest.err`
-$RM -r conftest*
-
-
-## CAVEAT EMPTOR:
-## There is no encapsulation within the following macros, do not change
-## the running order or otherwise move them around unless you know exactly
-## what you are doing...
-if test -n "$compiler"; then
-
-lt_prog_compiler_no_builtin_flag=
-
-if test "$GCC" = yes; then
- case $cc_basename in
- nvcc*)
- lt_prog_compiler_no_builtin_flag=' -Xcompiler -fno-builtin' ;;
- *)
- lt_prog_compiler_no_builtin_flag=' -fno-builtin' ;;
- esac
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -fno-rtti -fno-exceptions" >&5
-$as_echo_n "checking if $compiler supports -fno-rtti -fno-exceptions... " >&6; }
-if ${lt_cv_prog_compiler_rtti_exceptions+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_prog_compiler_rtti_exceptions=no
- ac_outfile=conftest.$ac_objext
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
- lt_compiler_flag="-fno-rtti -fno-exceptions"
- # Insert the option either (1) after the last *FLAGS variable, or
- # (2) before a word containing "conftest.", or (3) at the end.
- # Note that $ac_compile itself does not contain backslashes and begins
- # with a dollar sign (not a hyphen), so the echo should work correctly.
- # The option is referenced via a variable to avoid confusing sed.
- lt_compile=`echo "$ac_compile" | $SED \
- -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
- -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
- -e 's:$: $lt_compiler_flag:'`
- (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
- (eval "$lt_compile" 2>conftest.err)
- ac_status=$?
- cat conftest.err >&5
- echo "$as_me:$LINENO: \$? = $ac_status" >&5
- if (exit $ac_status) && test -s "$ac_outfile"; then
- # The compiler can only warn and ignore the option if not recognized
- # So say no if there are warnings other than the usual output.
- $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
- $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
- if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
- lt_cv_prog_compiler_rtti_exceptions=yes
- fi
- fi
- $RM conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_rtti_exceptions" >&5
-$as_echo "$lt_cv_prog_compiler_rtti_exceptions" >&6; }
-
-if test x"$lt_cv_prog_compiler_rtti_exceptions" = xyes; then
- lt_prog_compiler_no_builtin_flag="$lt_prog_compiler_no_builtin_flag -fno-rtti -fno-exceptions"
-else
- :
-fi
-
-fi
-
-
-
-
-
-
- lt_prog_compiler_wl=
-lt_prog_compiler_pic=
-lt_prog_compiler_static=
-
-
- if test "$GCC" = yes; then
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_static='-static'
-
- case $host_os in
- aix*)
- # All AIX code is PIC.
- if test "$host_cpu" = ia64; then
- # AIX 5 now supports IA64 processor
- lt_prog_compiler_static='-Bstatic'
- fi
- ;;
-
- amigaos*)
- case $host_cpu in
- powerpc)
- # see comment about AmigaOS4 .so support
- lt_prog_compiler_pic='-fPIC'
- ;;
- m68k)
- # FIXME: we need at least 68020 code to build shared libraries, but
- # adding the `-m68020' flag to GCC prevents building anything better,
- # like `-m68040'.
- lt_prog_compiler_pic='-m68020 -resident32 -malways-restore-a4'
- ;;
- esac
- ;;
-
- beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
- # PIC is the default for these OSes.
- ;;
-
- mingw* | cygwin* | pw32* | os2* | cegcc*)
- # This hack is so that the source file can tell whether it is being
- # built for inclusion in a dll (and should export symbols for example).
- # Although the cygwin gcc ignores -fPIC, still need this for old-style
- # (--disable-auto-import) libraries
- lt_prog_compiler_pic='-DDLL_EXPORT'
- ;;
-
- darwin* | rhapsody*)
- # PIC is the default on this platform
- # Common symbols not allowed in MH_DYLIB files
- lt_prog_compiler_pic='-fno-common'
- ;;
-
- haiku*)
- # PIC is the default for Haiku.
- # The "-static" flag exists, but is broken.
- lt_prog_compiler_static=
- ;;
-
- hpux*)
- # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
- # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
- # sets the default TLS model and affects inlining.
- case $host_cpu in
- hppa*64*)
- # +Z the default
- ;;
- *)
- lt_prog_compiler_pic='-fPIC'
- ;;
- esac
- ;;
-
- interix[3-9]*)
- # Interix 3.x gcc -fpic/-fPIC options generate broken code.
- # Instead, we relocate shared libraries at runtime.
- ;;
-
- msdosdjgpp*)
- # Just because we use GCC doesn't mean we suddenly get shared libraries
- # on systems that don't support them.
- lt_prog_compiler_can_build_shared=no
- enable_shared=no
- ;;
-
- *nto* | *qnx*)
- # QNX uses GNU C++, but need to define -shared option too, otherwise
- # it will coredump.
- lt_prog_compiler_pic='-fPIC -shared'
- ;;
-
- sysv4*MP*)
- if test -d /usr/nec; then
- lt_prog_compiler_pic=-Kconform_pic
- fi
- ;;
-
- *)
- lt_prog_compiler_pic='-fPIC'
- ;;
- esac
-
- case $cc_basename in
- nvcc*) # Cuda Compiler Driver 2.2
- lt_prog_compiler_wl='-Xlinker '
- if test -n "$lt_prog_compiler_pic"; then
- lt_prog_compiler_pic="-Xcompiler $lt_prog_compiler_pic"
- fi
- ;;
- esac
- else
- # PORTME Check for flag to pass linker flags through the system compiler.
- case $host_os in
- aix*)
- lt_prog_compiler_wl='-Wl,'
- if test "$host_cpu" = ia64; then
- # AIX 5 now supports IA64 processor
- lt_prog_compiler_static='-Bstatic'
- else
- lt_prog_compiler_static='-bnso -bI:/lib/syscalls.exp'
- fi
- ;;
-
- mingw* | cygwin* | pw32* | os2* | cegcc*)
- # This hack is so that the source file can tell whether it is being
- # built for inclusion in a dll (and should export symbols for example).
- lt_prog_compiler_pic='-DDLL_EXPORT'
- ;;
-
- hpux9* | hpux10* | hpux11*)
- lt_prog_compiler_wl='-Wl,'
- # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
- # not for PA HP-UX.
- case $host_cpu in
- hppa*64*|ia64*)
- # +Z the default
- ;;
- *)
- lt_prog_compiler_pic='+Z'
- ;;
- esac
- # Is there a better lt_prog_compiler_static that works with the bundled CC?
- lt_prog_compiler_static='${wl}-a ${wl}archive'
- ;;
-
- irix5* | irix6* | nonstopux*)
- lt_prog_compiler_wl='-Wl,'
- # PIC (with -KPIC) is the default.
- lt_prog_compiler_static='-non_shared'
- ;;
-
- linux* | k*bsd*-gnu | kopensolaris*-gnu)
- case $cc_basename in
- # old Intel for x86_64 which still supported -KPIC.
- ecc*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-static'
- ;;
- # icc used to be incompatible with GCC.
- # ICC 10 doesn't accept -KPIC any more.
- icc* | ifort*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-fPIC'
- lt_prog_compiler_static='-static'
- ;;
- # Lahey Fortran 8.1.
- lf95*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='--shared'
- lt_prog_compiler_static='--static'
- ;;
- nagfor*)
- # NAG Fortran compiler
- lt_prog_compiler_wl='-Wl,-Wl,,'
- lt_prog_compiler_pic='-PIC'
- lt_prog_compiler_static='-Bstatic'
- ;;
- pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
- # Portland Group compilers (*not* the Pentium gcc compiler,
- # which looks to be a dead project)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-fpic'
- lt_prog_compiler_static='-Bstatic'
- ;;
- ccc*)
- lt_prog_compiler_wl='-Wl,'
- # All Alpha code is PIC.
- lt_prog_compiler_static='-non_shared'
- ;;
- xl* | bgxl* | bgf* | mpixl*)
- # IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-qpic'
- lt_prog_compiler_static='-qstaticlink'
- ;;
- *)
- case `$CC -V 2>&1 | sed 5q` in
- *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [1-7].* | *Sun*Fortran*\ 8.[0-3]*)
- # Sun Fortran 8.3 passes all unrecognized flags to the linker
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- lt_prog_compiler_wl=''
- ;;
- *Sun\ F* | *Sun*Fortran*)
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- lt_prog_compiler_wl='-Qoption ld '
- ;;
- *Sun\ C*)
- # Sun C 5.9
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- lt_prog_compiler_wl='-Wl,'
- ;;
- *Intel*\ [CF]*Compiler*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-fPIC'
- lt_prog_compiler_static='-static'
- ;;
- *Portland\ Group*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-fpic'
- lt_prog_compiler_static='-Bstatic'
- ;;
- esac
- ;;
- esac
- ;;
-
- newsos6)
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- ;;
-
- *nto* | *qnx*)
- # QNX uses GNU C++, but need to define -shared option too, otherwise
- # it will coredump.
- lt_prog_compiler_pic='-fPIC -shared'
- ;;
-
- osf3* | osf4* | osf5*)
- lt_prog_compiler_wl='-Wl,'
- # All OSF/1 code is PIC.
- lt_prog_compiler_static='-non_shared'
- ;;
-
- rdos*)
- lt_prog_compiler_static='-non_shared'
- ;;
-
- solaris*)
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- case $cc_basename in
- f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
- lt_prog_compiler_wl='-Qoption ld ';;
- *)
- lt_prog_compiler_wl='-Wl,';;
- esac
- ;;
-
- sunos4*)
- lt_prog_compiler_wl='-Qoption ld '
- lt_prog_compiler_pic='-PIC'
- lt_prog_compiler_static='-Bstatic'
- ;;
-
- sysv4 | sysv4.2uw2* | sysv4.3*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- ;;
-
- sysv4*MP*)
- if test -d /usr/nec ;then
- lt_prog_compiler_pic='-Kconform_pic'
- lt_prog_compiler_static='-Bstatic'
- fi
- ;;
-
- sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_pic='-KPIC'
- lt_prog_compiler_static='-Bstatic'
- ;;
-
- unicos*)
- lt_prog_compiler_wl='-Wl,'
- lt_prog_compiler_can_build_shared=no
- ;;
-
- uts4*)
- lt_prog_compiler_pic='-pic'
- lt_prog_compiler_static='-Bstatic'
- ;;
-
- *)
- lt_prog_compiler_can_build_shared=no
- ;;
- esac
- fi
-
-case $host_os in
- # For platforms which do not support PIC, -DPIC is meaningless:
- *djgpp*)
- lt_prog_compiler_pic=
- ;;
- *)
- lt_prog_compiler_pic="$lt_prog_compiler_pic -DPIC"
- ;;
-esac
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking for $compiler option to produce PIC" >&5
-$as_echo_n "checking for $compiler option to produce PIC... " >&6; }
-if ${lt_cv_prog_compiler_pic+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_prog_compiler_pic=$lt_prog_compiler_pic
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic" >&5
-$as_echo "$lt_cv_prog_compiler_pic" >&6; }
-lt_prog_compiler_pic=$lt_cv_prog_compiler_pic
-
-#
-# Check to make sure the PIC flag actually works.
-#
-if test -n "$lt_prog_compiler_pic"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler PIC flag $lt_prog_compiler_pic works" >&5
-$as_echo_n "checking if $compiler PIC flag $lt_prog_compiler_pic works... " >&6; }
-if ${lt_cv_prog_compiler_pic_works+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_prog_compiler_pic_works=no
- ac_outfile=conftest.$ac_objext
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
- lt_compiler_flag="$lt_prog_compiler_pic -DPIC"
- # Insert the option either (1) after the last *FLAGS variable, or
- # (2) before a word containing "conftest.", or (3) at the end.
- # Note that $ac_compile itself does not contain backslashes and begins
- # with a dollar sign (not a hyphen), so the echo should work correctly.
- # The option is referenced via a variable to avoid confusing sed.
- lt_compile=`echo "$ac_compile" | $SED \
- -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
- -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
- -e 's:$: $lt_compiler_flag:'`
- (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
- (eval "$lt_compile" 2>conftest.err)
- ac_status=$?
- cat conftest.err >&5
- echo "$as_me:$LINENO: \$? = $ac_status" >&5
- if (exit $ac_status) && test -s "$ac_outfile"; then
- # The compiler can only warn and ignore the option if not recognized
- # So say no if there are warnings other than the usual output.
- $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
- $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
- if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
- lt_cv_prog_compiler_pic_works=yes
- fi
- fi
- $RM conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_pic_works" >&5
-$as_echo "$lt_cv_prog_compiler_pic_works" >&6; }
-
-if test x"$lt_cv_prog_compiler_pic_works" = xyes; then
- case $lt_prog_compiler_pic in
- "" | " "*) ;;
- *) lt_prog_compiler_pic=" $lt_prog_compiler_pic" ;;
- esac
-else
- lt_prog_compiler_pic=
- lt_prog_compiler_can_build_shared=no
-fi
-
-fi
-
-
-
-
-
-
-
-
-
-
-
-#
-# Check to make sure the static flag actually works.
-#
-wl=$lt_prog_compiler_wl eval lt_tmp_static_flag=\"$lt_prog_compiler_static\"
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler static flag $lt_tmp_static_flag works" >&5
-$as_echo_n "checking if $compiler static flag $lt_tmp_static_flag works... " >&6; }
-if ${lt_cv_prog_compiler_static_works+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_prog_compiler_static_works=no
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS $lt_tmp_static_flag"
- echo "$lt_simple_link_test_code" > conftest.$ac_ext
- if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
- # The linker can only warn and ignore the option if not recognized
- # So say no if there are warnings
- if test -s conftest.err; then
- # Append any errors to the config.log.
- cat conftest.err 1>&5
- $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
- $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
- if diff conftest.exp conftest.er2 >/dev/null; then
- lt_cv_prog_compiler_static_works=yes
- fi
- else
- lt_cv_prog_compiler_static_works=yes
- fi
- fi
- $RM -r conftest*
- LDFLAGS="$save_LDFLAGS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler_static_works" >&5
-$as_echo "$lt_cv_prog_compiler_static_works" >&6; }
-
-if test x"$lt_cv_prog_compiler_static_works" = xyes; then
- :
-else
- lt_prog_compiler_static=
-fi
-
-
-
-
-
-
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $compiler supports -c -o file.$ac_objext" >&5
-$as_echo_n "checking if $compiler supports -c -o file.$ac_objext... " >&6; }
-if ${lt_cv_prog_compiler_c_o+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_prog_compiler_c_o=no
- $RM -r conftest 2>/dev/null
- mkdir conftest
- cd conftest
- mkdir out
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
-
- lt_compiler_flag="-o out/conftest2.$ac_objext"
- # Insert the option either (1) after the last *FLAGS variable, or
- # (2) before a word containing "conftest.", or (3) at the end.
- # Note that $ac_compile itself does not contain backslashes and begins
- # with a dollar sign (not a hyphen), so the echo should work correctly.
- lt_compile=`echo "$ac_compile" | $SED \
- -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
- -e 's: [^ ]*conftest\.: $lt_compiler_flag&:; t' \
- -e 's:$: $lt_compiler_flag:'`
- (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&5)
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-
- gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
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- ifc* | ifort*) # Intel Fortran compiler
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- lf95*) # Lahey Fortran 8.1
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- xl[cC]* | bgxl[cC]* | mpixl[cC]*) # IBM XL C 8.0 on PPC (deal with xlf below)
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- archive_cmds='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
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- archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
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-*** Warning: The releases 2.8.* of the GNU linker cannot reliably
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-*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
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- sunos4*)
- archive_cmds='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
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- *)
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- archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
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- ld_shlibs=no
- fi
- ;;
- esac
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- if test "$ld_shlibs" = no; then
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- export_dynamic_flag_spec=
- whole_archive_flag_spec=
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- else
- # PORTME fill in a description of your system's linker (not GNU ld)
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- always_export_symbols=yes
- archive_expsym_cmds='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
- # Note: this linker hardcodes the directories in LIBPATH if there
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- hardcode_minus_L=yes
- if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
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- ;;
-
- aix[4-9]*)
- if test "$host_cpu" = ia64; then
- # On IA64, the linker does run time linking by default, so we don't
- # have to do anything special.
- aix_use_runtimelinking=no
- exp_sym_flag='-Bexport'
- no_entry_flag=""
- else
- # If we're using GNU nm, then we don't want the "-C" option.
- # -C means demangle to AIX nm, but means don't demangle with GNU nm
- # Also, AIX nm treats weak defined symbols like other global
- # defined symbols, whereas GNU nm marks them as "W".
- if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
- export_symbols_cmds='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
- else
- export_symbols_cmds='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && (substr(\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
- fi
- aix_use_runtimelinking=no
-
- # Test if we are trying to use run time linking or normal
- # AIX style linking. If -brtl is somewhere in LDFLAGS, we
- # need to do runtime linking.
- case $host_os in aix4.[23]|aix4.[23].*|aix[5-9]*)
- for ld_flag in $LDFLAGS; do
- if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
- aix_use_runtimelinking=yes
- break
- fi
- done
- ;;
- esac
-
- exp_sym_flag='-bexport'
- no_entry_flag='-bnoentry'
- fi
-
- # When large executables or shared objects are built, AIX ld can
- # have problems creating the table of contents. If linking a library
- # or program results in "error TOC overflow" add -mminimal-toc to
- # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
- # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
-
- archive_cmds=''
- hardcode_direct=yes
- hardcode_direct_absolute=yes
- hardcode_libdir_separator=':'
- link_all_deplibs=yes
- file_list_spec='${wl}-f,'
-
- if test "$GCC" = yes; then
- case $host_os in aix4.[012]|aix4.[012].*)
- # We only want to do this on AIX 4.2 and lower, the check
- # below for broken collect2 doesn't work under 4.3+
- collect2name=`${CC} -print-prog-name=collect2`
- if test -f "$collect2name" &&
- strings "$collect2name" | $GREP resolve_lib_name >/dev/null
- then
- # We have reworked collect2
- :
- else
- # We have old collect2
- hardcode_direct=unsupported
- # It fails to find uninstalled libraries when the uninstalled
- # path is not listed in the libpath. Setting hardcode_minus_L
- # to unsupported forces relinking
- hardcode_minus_L=yes
- hardcode_libdir_flag_spec='-L$libdir'
- hardcode_libdir_separator=
- fi
- ;;
- esac
- shared_flag='-shared'
- if test "$aix_use_runtimelinking" = yes; then
- shared_flag="$shared_flag "'${wl}-G'
- fi
- else
- # not using gcc
- if test "$host_cpu" = ia64; then
- # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
- # chokes on -Wl,-G. The following line is correct:
- shared_flag='-G'
- else
- if test "$aix_use_runtimelinking" = yes; then
- shared_flag='${wl}-G'
- else
- shared_flag='${wl}-bM:SRE'
- fi
- fi
- fi
-
- export_dynamic_flag_spec='${wl}-bexpall'
- # It seems that -bexpall does not export symbols beginning with
- # underscore (_), so it is better to generate a list of symbols to export.
- always_export_symbols=yes
- if test "$aix_use_runtimelinking" = yes; then
- # Warning - without using the other runtime loading flags (-brtl),
- # -berok will link without error, but may produce a broken library.
- allow_undefined_flag='-berok'
- # Determine the default libpath from the value encoded in an
- # empty executable.
- if test "${lt_cv_aix_libpath+set}" = set; then
- aix_libpath=$lt_cv_aix_libpath
-else
- if ${lt_cv_aix_libpath_+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-
- lt_aix_libpath_sed='
- /Import File Strings/,/^$/ {
- /^0/ {
- s/^0 *\([^ ]*\) *$/\1/
- p
- }
- }'
- lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
- # Check for a 64-bit object if we didn't find anything.
- if test -z "$lt_cv_aix_libpath_"; then
- lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
- fi
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- if test -z "$lt_cv_aix_libpath_"; then
- lt_cv_aix_libpath_="/usr/lib:/lib"
- fi
-
-fi
-
- aix_libpath=$lt_cv_aix_libpath_
-fi
-
- hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
- archive_expsym_cmds='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
- else
- if test "$host_cpu" = ia64; then
- hardcode_libdir_flag_spec='${wl}-R $libdir:/usr/lib:/lib'
- allow_undefined_flag="-z nodefs"
- archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
- else
- # Determine the default libpath from the value encoded in an
- # empty executable.
- if test "${lt_cv_aix_libpath+set}" = set; then
- aix_libpath=$lt_cv_aix_libpath
-else
- if ${lt_cv_aix_libpath_+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-
- lt_aix_libpath_sed='
- /Import File Strings/,/^$/ {
- /^0/ {
- s/^0 *\([^ ]*\) *$/\1/
- p
- }
- }'
- lt_cv_aix_libpath_=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
- # Check for a 64-bit object if we didn't find anything.
- if test -z "$lt_cv_aix_libpath_"; then
- lt_cv_aix_libpath_=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
- fi
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- if test -z "$lt_cv_aix_libpath_"; then
- lt_cv_aix_libpath_="/usr/lib:/lib"
- fi
-
-fi
-
- aix_libpath=$lt_cv_aix_libpath_
-fi
-
- hardcode_libdir_flag_spec='${wl}-blibpath:$libdir:'"$aix_libpath"
- # Warning - without using the other run time loading flags,
- # -berok will link without error, but may produce a broken library.
- no_undefined_flag=' ${wl}-bernotok'
- allow_undefined_flag=' ${wl}-berok'
- if test "$with_gnu_ld" = yes; then
- # We only use this code for GNU lds that support --whole-archive.
- whole_archive_flag_spec='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
- else
- # Exported symbols can be pulled into shared objects from archives
- whole_archive_flag_spec='$convenience'
- fi
- archive_cmds_need_lc=yes
- # This is similar to how AIX traditionally builds its shared libraries.
- archive_expsym_cmds="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
- fi
- fi
- ;;
-
- amigaos*)
- case $host_cpu in
- powerpc)
- # see comment about AmigaOS4 .so support
- archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- archive_expsym_cmds=''
- ;;
- m68k)
- archive_cmds='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
- hardcode_libdir_flag_spec='-L$libdir'
- hardcode_minus_L=yes
- ;;
- esac
- ;;
-
- bsdi[45]*)
- export_dynamic_flag_spec=-rdynamic
- ;;
-
- cygwin* | mingw* | pw32* | cegcc*)
- # When not using gcc, we currently assume that we are using
- # Microsoft Visual C++.
- # hardcode_libdir_flag_spec is actually meaningless, as there is
- # no search path for DLLs.
- case $cc_basename in
- cl*)
- # Native MSVC
- hardcode_libdir_flag_spec=' '
- allow_undefined_flag=unsupported
- always_export_symbols=yes
- file_list_spec='@'
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- archive_cmds='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
- archive_expsym_cmds='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
- sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
- else
- sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
- fi~
- $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
- linknames='
- # The linker will not automatically build a static lib if we build a DLL.
- # _LT_TAGVAR(old_archive_from_new_cmds, )='true'
- enable_shared_with_static_runtimes=yes
- exclude_expsyms='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
- export_symbols_cmds='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[BCDGRS][ ]/s/.*[ ]\([^ ]*\)/\1,DATA/'\'' | $SED -e '\''/^[AITW][ ]/s/.*[ ]//'\'' | sort | uniq > $export_symbols'
- # Don't use ranlib
- old_postinstall_cmds='chmod 644 $oldlib'
- postlink_cmds='lt_outputfile="@OUTPUT@"~
- lt_tool_outputfile="@TOOL_OUTPUT@"~
- case $lt_outputfile in
- *.exe|*.EXE) ;;
- *)
- lt_outputfile="$lt_outputfile.exe"
- lt_tool_outputfile="$lt_tool_outputfile.exe"
- ;;
- esac~
- if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
- $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
- $RM "$lt_outputfile.manifest";
- fi'
- ;;
- *)
- # Assume MSVC wrapper
- hardcode_libdir_flag_spec=' '
- allow_undefined_flag=unsupported
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- archive_cmds='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
- # The linker will automatically build a .lib file if we build a DLL.
- old_archive_from_new_cmds='true'
- # FIXME: Should let the user specify the lib program.
- old_archive_cmds='lib -OUT:$oldlib$oldobjs$old_deplibs'
- enable_shared_with_static_runtimes=yes
- ;;
- esac
- ;;
-
- darwin* | rhapsody*)
-
-
- archive_cmds_need_lc=no
- hardcode_direct=no
- hardcode_automatic=yes
- hardcode_shlibpath_var=unsupported
- if test "$lt_cv_ld_force_load" = "yes"; then
- whole_archive_flag_spec='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
-
- else
- whole_archive_flag_spec=''
- fi
- link_all_deplibs=yes
- allow_undefined_flag="$_lt_dar_allow_undefined"
- case $cc_basename in
- ifort*) _lt_dar_can_shared=yes ;;
- *) _lt_dar_can_shared=$GCC ;;
- esac
- if test "$_lt_dar_can_shared" = "yes"; then
- output_verbose_link_cmd=func_echo_all
- archive_cmds="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
- module_cmds="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
- archive_expsym_cmds="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
- module_expsym_cmds="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
-
- else
- ld_shlibs=no
- fi
-
- ;;
-
- dgux*)
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_libdir_flag_spec='-L$libdir'
- hardcode_shlibpath_var=no
- ;;
-
- # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
- # support. Future versions do this automatically, but an explicit c++rt0.o
- # does not break anything, and helps significantly (at the cost of a little
- # extra space).
- freebsd2.2*)
- archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
- hardcode_libdir_flag_spec='-R$libdir'
- hardcode_direct=yes
- hardcode_shlibpath_var=no
- ;;
-
- # Unfortunately, older versions of FreeBSD 2 do not have this feature.
- freebsd2.*)
- archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
- hardcode_direct=yes
- hardcode_minus_L=yes
- hardcode_shlibpath_var=no
- ;;
-
- # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
- freebsd* | dragonfly*)
- archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
- hardcode_libdir_flag_spec='-R$libdir'
- hardcode_direct=yes
- hardcode_shlibpath_var=no
- ;;
-
- hpux9*)
- if test "$GCC" = yes; then
- archive_cmds='$RM $output_objdir/$soname~$CC -shared $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
- else
- archive_cmds='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
- fi
- hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
- hardcode_libdir_separator=:
- hardcode_direct=yes
-
- # hardcode_minus_L: Not really in the search PATH,
- # but as the default location of the library.
- hardcode_minus_L=yes
- export_dynamic_flag_spec='${wl}-E'
- ;;
-
- hpux10*)
- if test "$GCC" = yes && test "$with_gnu_ld" = no; then
- archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
- else
- archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
- fi
- if test "$with_gnu_ld" = no; then
- hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
- hardcode_libdir_separator=:
- hardcode_direct=yes
- hardcode_direct_absolute=yes
- export_dynamic_flag_spec='${wl}-E'
- # hardcode_minus_L: Not really in the search PATH,
- # but as the default location of the library.
- hardcode_minus_L=yes
- fi
- ;;
-
- hpux11*)
- if test "$GCC" = yes && test "$with_gnu_ld" = no; then
- case $host_cpu in
- hppa*64*)
- archive_cmds='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- ia64*)
- archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- *)
- archive_cmds='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- esac
- else
- case $host_cpu in
- hppa*64*)
- archive_cmds='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- ia64*)
- archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- *)
-
- # Older versions of the 11.00 compiler do not understand -b yet
- # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking if $CC understands -b" >&5
-$as_echo_n "checking if $CC understands -b... " >&6; }
-if ${lt_cv_prog_compiler__b+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_prog_compiler__b=no
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS -b"
- echo "$lt_simple_link_test_code" > conftest.$ac_ext
- if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
- # The linker can only warn and ignore the option if not recognized
- # So say no if there are warnings
- if test -s conftest.err; then
- # Append any errors to the config.log.
- cat conftest.err 1>&5
- $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
- $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
- if diff conftest.exp conftest.er2 >/dev/null; then
- lt_cv_prog_compiler__b=yes
- fi
- else
- lt_cv_prog_compiler__b=yes
- fi
- fi
- $RM -r conftest*
- LDFLAGS="$save_LDFLAGS"
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_prog_compiler__b" >&5
-$as_echo "$lt_cv_prog_compiler__b" >&6; }
-
-if test x"$lt_cv_prog_compiler__b" = xyes; then
- archive_cmds='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
-else
- archive_cmds='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
-fi
-
- ;;
- esac
- fi
- if test "$with_gnu_ld" = no; then
- hardcode_libdir_flag_spec='${wl}+b ${wl}$libdir'
- hardcode_libdir_separator=:
-
- case $host_cpu in
- hppa*64*|ia64*)
- hardcode_direct=no
- hardcode_shlibpath_var=no
- ;;
- *)
- hardcode_direct=yes
- hardcode_direct_absolute=yes
- export_dynamic_flag_spec='${wl}-E'
-
- # hardcode_minus_L: Not really in the search PATH,
- # but as the default location of the library.
- hardcode_minus_L=yes
- ;;
- esac
- fi
- ;;
-
- irix5* | irix6* | nonstopux*)
- if test "$GCC" = yes; then
- archive_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- # Try to use the -exported_symbol ld option, if it does not
- # work, assume that -exports_file does not work either and
- # implicitly export all symbols.
- # This should be the same for all languages, so no per-tag cache variable.
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether the $host_os linker accepts -exported_symbol" >&5
-$as_echo_n "checking whether the $host_os linker accepts -exported_symbol... " >&6; }
-if ${lt_cv_irix_exported_symbol+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-int foo (void) { return 0; }
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- lt_cv_irix_exported_symbol=yes
-else
- lt_cv_irix_exported_symbol=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- LDFLAGS="$save_LDFLAGS"
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_irix_exported_symbol" >&5
-$as_echo "$lt_cv_irix_exported_symbol" >&6; }
- if test "$lt_cv_irix_exported_symbol" = yes; then
- archive_expsym_cmds='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
- fi
- else
- archive_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- archive_expsym_cmds='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
- fi
- archive_cmds_need_lc='no'
- hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
- hardcode_libdir_separator=:
- inherit_rpath=yes
- link_all_deplibs=yes
- ;;
-
- netbsd*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
- archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
- else
- archive_cmds='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
- fi
- hardcode_libdir_flag_spec='-R$libdir'
- hardcode_direct=yes
- hardcode_shlibpath_var=no
- ;;
-
- newsos6)
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_direct=yes
- hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
- hardcode_libdir_separator=:
- hardcode_shlibpath_var=no
- ;;
-
- *nto* | *qnx*)
- ;;
-
- openbsd*)
- if test -f /usr/libexec/ld.so; then
- hardcode_direct=yes
- hardcode_shlibpath_var=no
- hardcode_direct_absolute=yes
- if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
- hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
- export_dynamic_flag_spec='${wl}-E'
- else
- case $host_os in
- openbsd[01].* | openbsd2.[0-7] | openbsd2.[0-7].*)
- archive_cmds='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
- hardcode_libdir_flag_spec='-R$libdir'
- ;;
- *)
- archive_cmds='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
- hardcode_libdir_flag_spec='${wl}-rpath,$libdir'
- ;;
- esac
- fi
- else
- ld_shlibs=no
- fi
- ;;
-
- os2*)
- hardcode_libdir_flag_spec='-L$libdir'
- hardcode_minus_L=yes
- allow_undefined_flag=unsupported
- archive_cmds='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
- old_archive_from_new_cmds='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
- ;;
-
- osf3*)
- if test "$GCC" = yes; then
- allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
- archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- else
- allow_undefined_flag=' -expect_unresolved \*'
- archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- fi
- archive_cmds_need_lc='no'
- hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
- hardcode_libdir_separator=:
- ;;
-
- osf4* | osf5*) # as osf3* with the addition of -msym flag
- if test "$GCC" = yes; then
- allow_undefined_flag=' ${wl}-expect_unresolved ${wl}\*'
- archive_cmds='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- hardcode_libdir_flag_spec='${wl}-rpath ${wl}$libdir'
- else
- allow_undefined_flag=' -expect_unresolved \*'
- archive_cmds='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- archive_expsym_cmds='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
- $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
-
- # Both c and cxx compiler support -rpath directly
- hardcode_libdir_flag_spec='-rpath $libdir'
- fi
- archive_cmds_need_lc='no'
- hardcode_libdir_separator=:
- ;;
-
- solaris*)
- no_undefined_flag=' -z defs'
- if test "$GCC" = yes; then
- wlarc='${wl}'
- archive_cmds='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
- else
- case `$CC -V 2>&1` in
- *"Compilers 5.0"*)
- wlarc=''
- archive_cmds='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
- archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
- ;;
- *)
- wlarc='${wl}'
- archive_cmds='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
- ;;
- esac
- fi
- hardcode_libdir_flag_spec='-R$libdir'
- hardcode_shlibpath_var=no
- case $host_os in
- solaris2.[0-5] | solaris2.[0-5].*) ;;
- *)
- # The compiler driver will combine and reorder linker options,
- # but understands `-z linker_flag'. GCC discards it without `$wl',
- # but is careful enough not to reorder.
- # Supported since Solaris 2.6 (maybe 2.5.1?)
- if test "$GCC" = yes; then
- whole_archive_flag_spec='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
- else
- whole_archive_flag_spec='-z allextract$convenience -z defaultextract'
- fi
- ;;
- esac
- link_all_deplibs=yes
- ;;
-
- sunos4*)
- if test "x$host_vendor" = xsequent; then
- # Use $CC to link under sequent, because it throws in some extra .o
- # files that make .init and .fini sections work.
- archive_cmds='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
- else
- archive_cmds='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
- fi
- hardcode_libdir_flag_spec='-L$libdir'
- hardcode_direct=yes
- hardcode_minus_L=yes
- hardcode_shlibpath_var=no
- ;;
-
- sysv4)
- case $host_vendor in
- sni)
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_direct=yes # is this really true???
- ;;
- siemens)
- ## LD is ld it makes a PLAMLIB
- ## CC just makes a GrossModule.
- archive_cmds='$LD -G -o $lib $libobjs $deplibs $linker_flags'
- reload_cmds='$CC -r -o $output$reload_objs'
- hardcode_direct=no
- ;;
- motorola)
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_direct=no #Motorola manual says yes, but my tests say they lie
- ;;
- esac
- runpath_var='LD_RUN_PATH'
- hardcode_shlibpath_var=no
- ;;
-
- sysv4.3*)
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_shlibpath_var=no
- export_dynamic_flag_spec='-Bexport'
- ;;
-
- sysv4*MP*)
- if test -d /usr/nec; then
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_shlibpath_var=no
- runpath_var=LD_RUN_PATH
- hardcode_runpath_var=yes
- ld_shlibs=yes
- fi
- ;;
-
- sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[01].[10]* | unixware7* | sco3.2v5.0.[024]*)
- no_undefined_flag='${wl}-z,text'
- archive_cmds_need_lc=no
- hardcode_shlibpath_var=no
- runpath_var='LD_RUN_PATH'
-
- if test "$GCC" = yes; then
- archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- else
- archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- fi
- ;;
-
- sysv5* | sco3.2v5* | sco5v6*)
- # Note: We can NOT use -z defs as we might desire, because we do not
- # link with -lc, and that would cause any symbols used from libc to
- # always be unresolved, which means just about no library would
- # ever link correctly. If we're not using GNU ld we use -z text
- # though, which does catch some bad symbols but isn't as heavy-handed
- # as -z defs.
- no_undefined_flag='${wl}-z,text'
- allow_undefined_flag='${wl}-z,nodefs'
- archive_cmds_need_lc=no
- hardcode_shlibpath_var=no
- hardcode_libdir_flag_spec='${wl}-R,$libdir'
- hardcode_libdir_separator=':'
- link_all_deplibs=yes
- export_dynamic_flag_spec='${wl}-Bexport'
- runpath_var='LD_RUN_PATH'
-
- if test "$GCC" = yes; then
- archive_cmds='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- else
- archive_cmds='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- archive_expsym_cmds='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- fi
- ;;
-
- uts4*)
- archive_cmds='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- hardcode_libdir_flag_spec='-L$libdir'
- hardcode_shlibpath_var=no
- ;;
-
- *)
- ld_shlibs=no
- ;;
- esac
-
- if test x$host_vendor = xsni; then
- case $host in
- sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
- export_dynamic_flag_spec='${wl}-Blargedynsym'
- ;;
- esac
- fi
- fi
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ld_shlibs" >&5
-$as_echo "$ld_shlibs" >&6; }
-test "$ld_shlibs" = no && can_build_shared=no
-
-with_gnu_ld=$with_gnu_ld
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-#
-# Do we need to explicitly link libc?
-#
-case "x$archive_cmds_need_lc" in
-x|xyes)
- # Assume -lc should be added
- archive_cmds_need_lc=yes
-
- if test "$enable_shared" = yes && test "$GCC" = yes; then
- case $archive_cmds in
- *'~'*)
- # FIXME: we may have to deal with multi-command sequences.
- ;;
- '$CC '*)
- # Test whether the compiler implicitly links with -lc since on some
- # systems, -lgcc has to come before -lc. If gcc already passes -lc
- # to ld, don't add -lc before -lgcc.
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether -lc should be explicitly linked in" >&5
-$as_echo_n "checking whether -lc should be explicitly linked in... " >&6; }
-if ${lt_cv_archive_cmds_need_lc+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- $RM conftest*
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
-
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_compile\""; } >&5
- (eval $ac_compile) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; } 2>conftest.err; then
- soname=conftest
- lib=conftest
- libobjs=conftest.$ac_objext
- deplibs=
- wl=$lt_prog_compiler_wl
- pic_flag=$lt_prog_compiler_pic
- compiler_flags=-v
- linker_flags=-v
- verstring=
- output_objdir=.
- libname=conftest
- lt_save_allow_undefined_flag=$allow_undefined_flag
- allow_undefined_flag=
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1\""; } >&5
- (eval $archive_cmds 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; }
- then
- lt_cv_archive_cmds_need_lc=no
- else
- lt_cv_archive_cmds_need_lc=yes
- fi
- allow_undefined_flag=$lt_save_allow_undefined_flag
- else
- cat conftest.err 1>&5
- fi
- $RM conftest*
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_archive_cmds_need_lc" >&5
-$as_echo "$lt_cv_archive_cmds_need_lc" >&6; }
- archive_cmds_need_lc=$lt_cv_archive_cmds_need_lc
- ;;
- esac
- fi
- ;;
-esac
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking dynamic linker characteristics" >&5
-$as_echo_n "checking dynamic linker characteristics... " >&6; }
-
-if test "$GCC" = yes; then
- case $host_os in
- darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
- *) lt_awk_arg="/^libraries:/" ;;
- esac
- case $host_os in
- mingw* | cegcc*) lt_sed_strip_eq="s,=\([A-Za-z]:\),\1,g" ;;
- *) lt_sed_strip_eq="s,=/,/,g" ;;
- esac
- lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
- case $lt_search_path_spec in
- *\;*)
- # if the path contains ";" then we assume it to be the separator
- # otherwise default to the standard path separator (i.e. ":") - it is
- # assumed that no part of a normal pathname contains ";" but that should
- # okay in the real world where ";" in dirpaths is itself problematic.
- lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
- ;;
- *)
- lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
- ;;
- esac
- # Ok, now we have the path, separated by spaces, we can step through it
- # and add multilib dir if necessary.
- lt_tmp_lt_search_path_spec=
- lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
- for lt_sys_path in $lt_search_path_spec; do
- if test -d "$lt_sys_path/$lt_multi_os_dir"; then
- lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
- else
- test -d "$lt_sys_path" && \
- lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
- fi
- done
- lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
-BEGIN {RS=" "; FS="/|\n";} {
- lt_foo="";
- lt_count=0;
- for (lt_i = NF; lt_i > 0; lt_i--) {
- if ($lt_i != "" && $lt_i != ".") {
- if ($lt_i == "..") {
- lt_count++;
- } else {
- if (lt_count == 0) {
- lt_foo="/" $lt_i lt_foo;
- } else {
- lt_count--;
- }
- }
- }
- }
- if (lt_foo != "") { lt_freq[lt_foo]++; }
- if (lt_freq[lt_foo] == 1) { print lt_foo; }
-}'`
- # AWK program above erroneously prepends '/' to C:/dos/paths
- # for these hosts.
- case $host_os in
- mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
- $SED 's,/\([A-Za-z]:\),\1,g'` ;;
- esac
- sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
-else
- sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
-fi
-library_names_spec=
-libname_spec='lib$name'
-soname_spec=
-shrext_cmds=".so"
-postinstall_cmds=
-postuninstall_cmds=
-finish_cmds=
-finish_eval=
-shlibpath_var=
-shlibpath_overrides_runpath=unknown
-version_type=none
-dynamic_linker="$host_os ld.so"
-sys_lib_dlsearch_path_spec="/lib /usr/lib"
-need_lib_prefix=unknown
-hardcode_into_libs=no
-
-# when you set need_version to no, make sure it does not cause -set_version
-# flags to be left without arguments
-need_version=unknown
-
-case $host_os in
-aix3*)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
- shlibpath_var=LIBPATH
-
- # AIX 3 has no versioning support, so we append a major version to the name.
- soname_spec='${libname}${release}${shared_ext}$major'
- ;;
-
-aix[4-9]*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- hardcode_into_libs=yes
- if test "$host_cpu" = ia64; then
- # AIX 5 supports IA64
- library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- else
- # With GCC up to 2.95.x, collect2 would create an import file
- # for dependence libraries. The import file would start with
- # the line `#! .'. This would cause the generated library to
- # depend on `.', always an invalid library. This was fixed in
- # development snapshots of GCC prior to 3.0.
- case $host_os in
- aix4 | aix4.[01] | aix4.[01].*)
- if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
- echo ' yes '
- echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
- :
- else
- can_build_shared=no
- fi
- ;;
- esac
- # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
- # soname into executable. Probably we can add versioning support to
- # collect2, so additional links can be useful in future.
- if test "$aix_use_runtimelinking" = yes; then
- # If using run time linking (on AIX 4.2 or later) use lib<name>.so
- # instead of lib<name>.a to let people know that these are not
- # typical AIX shared libraries.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- else
- # We preserve .a as extension for shared libraries through AIX4.2
- # and later when we are not doing run time linking.
- library_names_spec='${libname}${release}.a $libname.a'
- soname_spec='${libname}${release}${shared_ext}$major'
- fi
- shlibpath_var=LIBPATH
- fi
- ;;
-
-amigaos*)
- case $host_cpu in
- powerpc)
- # Since July 2007 AmigaOS4 officially supports .so libraries.
- # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- ;;
- m68k)
- library_names_spec='$libname.ixlibrary $libname.a'
- # Create ${libname}_ixlibrary.a entries in /sys/libs.
- finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([^/]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
- ;;
- esac
- ;;
-
-beos*)
- library_names_spec='${libname}${shared_ext}'
- dynamic_linker="$host_os ld.so"
- shlibpath_var=LIBRARY_PATH
- ;;
-
-bsdi[45]*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
- sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
- # the default ld.so.conf also contains /usr/contrib/lib and
- # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
- # libtool to hard-code these into programs
- ;;
-
-cygwin* | mingw* | pw32* | cegcc*)
- version_type=windows
- shrext_cmds=".dll"
- need_version=no
- need_lib_prefix=no
-
- case $GCC,$cc_basename in
- yes,*)
- # gcc
- library_names_spec='$libname.dll.a'
- # DLL is installed to $(libdir)/../bin by postinstall_cmds
- postinstall_cmds='base_file=`basename \${file}`~
- dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
- dldir=$destdir/`dirname \$dlpath`~
- test -d \$dldir || mkdir -p \$dldir~
- $install_prog $dir/$dlname \$dldir/$dlname~
- chmod a+x \$dldir/$dlname~
- if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
- eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
- fi'
- postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
- dlpath=$dir/\$dldll~
- $RM \$dlpath'
- shlibpath_overrides_runpath=yes
-
- case $host_os in
- cygwin*)
- # Cygwin DLLs use 'cyg' prefix rather than 'lib'
- soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
-
- sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"
- ;;
- mingw* | cegcc*)
- # MinGW DLLs use traditional 'lib' prefix
- soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
- ;;
- pw32*)
- # pw32 DLLs use 'pw' prefix rather than 'lib'
- library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
- ;;
- esac
- dynamic_linker='Win32 ld.exe'
- ;;
-
- *,cl*)
- # Native MSVC
- libname_spec='$name'
- soname_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext}'
- library_names_spec='${libname}.dll.lib'
-
- case $build_os in
- mingw*)
- sys_lib_search_path_spec=
- lt_save_ifs=$IFS
- IFS=';'
- for lt_path in $LIB
- do
- IFS=$lt_save_ifs
- # Let DOS variable expansion print the short 8.3 style file name.
- lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"`
- sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path"
- done
- IFS=$lt_save_ifs
- # Convert to MSYS style.
- sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([a-zA-Z]\\):| /\\1|g' -e 's|^ ||'`
- ;;
- cygwin*)
- # Convert to unix form, then to dos form, then back to unix form
- # but this time dos style (no spaces!) so that the unix form looks
- # like /cygdrive/c/PROGRA~1:/cygdr...
- sys_lib_search_path_spec=`cygpath --path --unix "$LIB"`
- sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null`
- sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
- ;;
- *)
- sys_lib_search_path_spec="$LIB"
- if $ECHO "$sys_lib_search_path_spec" | $GREP ';[c-zC-Z]:/' >/dev/null; then
- # It is most probably a Windows format PATH.
- sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
- else
- sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
- fi
- # FIXME: find the short name or the path components, as spaces are
- # common. (e.g. "Program Files" -> "PROGRA~1")
- ;;
- esac
-
- # DLL is installed to $(libdir)/../bin by postinstall_cmds
- postinstall_cmds='base_file=`basename \${file}`~
- dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
- dldir=$destdir/`dirname \$dlpath`~
- test -d \$dldir || mkdir -p \$dldir~
- $install_prog $dir/$dlname \$dldir/$dlname'
- postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
- dlpath=$dir/\$dldll~
- $RM \$dlpath'
- shlibpath_overrides_runpath=yes
- dynamic_linker='Win32 link.exe'
- ;;
-
- *)
- # Assume MSVC wrapper
- library_names_spec='${libname}`echo ${release} | $SED -e 's/[.]/-/g'`${versuffix}${shared_ext} $libname.lib'
- dynamic_linker='Win32 ld.exe'
- ;;
- esac
- # FIXME: first we should search . and the directory the executable is in
- shlibpath_var=PATH
- ;;
-
-darwin* | rhapsody*)
- dynamic_linker="$host_os dyld"
- version_type=darwin
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
- soname_spec='${libname}${release}${major}$shared_ext'
- shlibpath_overrides_runpath=yes
- shlibpath_var=DYLD_LIBRARY_PATH
- shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
-
- sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"
- sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
- ;;
-
-dgux*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- ;;
-
-freebsd* | dragonfly*)
- # DragonFly does not have aout. When/if they implement a new
- # versioning mechanism, adjust this.
- if test -x /usr/bin/objformat; then
- objformat=`/usr/bin/objformat`
- else
- case $host_os in
- freebsd[23].*) objformat=aout ;;
- *) objformat=elf ;;
- esac
- fi
- version_type=freebsd-$objformat
- case $version_type in
- freebsd-elf*)
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
- need_version=no
- need_lib_prefix=no
- ;;
- freebsd-*)
- library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
- need_version=yes
- ;;
- esac
- shlibpath_var=LD_LIBRARY_PATH
- case $host_os in
- freebsd2.*)
- shlibpath_overrides_runpath=yes
- ;;
- freebsd3.[01]* | freebsdelf3.[01]*)
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- ;;
- freebsd3.[2-9]* | freebsdelf3.[2-9]* | \
- freebsd4.[0-5] | freebsdelf4.[0-5] | freebsd4.1.1 | freebsdelf4.1.1)
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
- *) # from 4.6 on, and DragonFly
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- ;;
- esac
- ;;
-
-gnu*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
-
-haiku*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- dynamic_linker="$host_os runtime_loader"
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib'
- hardcode_into_libs=yes
- ;;
-
-hpux9* | hpux10* | hpux11*)
- # Give a soname corresponding to the major version so that dld.sl refuses to
- # link against other versions.
- version_type=sunos
- need_lib_prefix=no
- need_version=no
- case $host_cpu in
- ia64*)
- shrext_cmds='.so'
- hardcode_into_libs=yes
- dynamic_linker="$host_os dld.so"
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- if test "X$HPUX_IA64_MODE" = X32; then
- sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
- else
- sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
- fi
- sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
- ;;
- hppa*64*)
- shrext_cmds='.sl'
- hardcode_into_libs=yes
- dynamic_linker="$host_os dld.sl"
- shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
- shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
- sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
- ;;
- *)
- shrext_cmds='.sl'
- dynamic_linker="$host_os dld.sl"
- shlibpath_var=SHLIB_PATH
- shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- ;;
- esac
- # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
- postinstall_cmds='chmod 555 $lib'
- # or fails outright, so override atomically:
- install_override_mode=555
- ;;
-
-interix[3-9]*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
-
-irix5* | irix6* | nonstopux*)
- case $host_os in
- nonstopux*) version_type=nonstopux ;;
- *)
- if test "$lt_cv_prog_gnu_ld" = yes; then
- version_type=linux # correct to gnu/linux during the next big refactor
- else
- version_type=irix
- fi ;;
- esac
- need_lib_prefix=no
- need_version=no
- soname_spec='${libname}${release}${shared_ext}$major'
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
- case $host_os in
- irix5* | nonstopux*)
- libsuff= shlibsuff=
- ;;
- *)
- case $LD in # libtool.m4 will add one of these switches to LD
- *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
- libsuff= shlibsuff= libmagic=32-bit;;
- *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
- libsuff=32 shlibsuff=N32 libmagic=N32;;
- *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
- libsuff=64 shlibsuff=64 libmagic=64-bit;;
- *) libsuff= shlibsuff= libmagic=never-match;;
- esac
- ;;
- esac
- shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
- shlibpath_overrides_runpath=no
- sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
- sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
- hardcode_into_libs=yes
- ;;
-
-# No shared lib support for Linux oldld, aout, or coff.
-linux*oldld* | linux*aout* | linux*coff*)
- dynamic_linker=no
- ;;
-
-# This must be glibc/ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
-
- # Some binutils ld are patched to set DT_RUNPATH
- if ${lt_cv_shlibpath_overrides_runpath+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- lt_cv_shlibpath_overrides_runpath=no
- save_LDFLAGS=$LDFLAGS
- save_libdir=$libdir
- eval "libdir=/foo; wl=\"$lt_prog_compiler_wl\"; \
- LDFLAGS=\"\$LDFLAGS $hardcode_libdir_flag_spec\""
- cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-int
-main ()
-{
-
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- if ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null; then :
- lt_cv_shlibpath_overrides_runpath=yes
-fi
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
- LDFLAGS=$save_LDFLAGS
- libdir=$save_libdir
-
-fi
-
- shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
-
- # This implies no fast_install, which is unacceptable.
- # Some rework will be needed to allow for fast_install
- # before this can be enabled.
- hardcode_into_libs=yes
-
- # Append ld.so.conf contents to the search path
- if test -f /etc/ld.so.conf; then
- lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \$2)); skip = 1; } { if (!skip) print \$0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
- sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
- fi
-
- # We used to test for /lib/ld.so.1 and disable shared libraries on
- # powerpc, because MkLinux only supported shared libraries with the
- # GNU dynamic linker. Since this was broken with cross compilers,
- # most powerpc-linux boxes support dynamic linking these days and
- # people can always --disable-shared, the test was removed, and we
- # assume the GNU/Linux dynamic linker is in use.
- dynamic_linker='GNU/Linux ld.so'
- ;;
-
-netbsd*)
- version_type=sunos
- need_lib_prefix=no
- need_version=no
- if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
- dynamic_linker='NetBSD (a.out) ld.so'
- else
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- dynamic_linker='NetBSD ld.elf_so'
- fi
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- ;;
-
-newsos6)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- ;;
-
-*nto* | *qnx*)
- version_type=qnx
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- dynamic_linker='ldqnx.so'
- ;;
-
-openbsd*)
- version_type=sunos
- sys_lib_dlsearch_path_spec="/usr/lib"
- need_lib_prefix=no
- # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
- case $host_os in
- openbsd3.3 | openbsd3.3.*) need_version=yes ;;
- *) need_version=no ;;
- esac
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- case $host_os in
- openbsd2.[89] | openbsd2.[89].*)
- shlibpath_overrides_runpath=no
- ;;
- *)
- shlibpath_overrides_runpath=yes
- ;;
- esac
- else
- shlibpath_overrides_runpath=yes
- fi
- ;;
-
-os2*)
- libname_spec='$name'
- shrext_cmds=".dll"
- need_lib_prefix=no
- library_names_spec='$libname${shared_ext} $libname.a'
- dynamic_linker='OS/2 ld.exe'
- shlibpath_var=LIBPATH
- ;;
-
-osf3* | osf4* | osf5*)
- version_type=osf
- need_lib_prefix=no
- need_version=no
- soname_spec='${libname}${release}${shared_ext}$major'
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
- sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
- ;;
-
-rdos*)
- dynamic_linker=no
- ;;
-
-solaris*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- # ldd complains unless libraries are executable
- postinstall_cmds='chmod +x $lib'
- ;;
-
-sunos4*)
- version_type=sunos
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
- finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- if test "$with_gnu_ld" = yes; then
- need_lib_prefix=no
- fi
- need_version=yes
- ;;
-
-sysv4 | sysv4.3*)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- case $host_vendor in
- sni)
- shlibpath_overrides_runpath=no
- need_lib_prefix=no
- runpath_var=LD_RUN_PATH
- ;;
- siemens)
- need_lib_prefix=no
- ;;
- motorola)
- need_lib_prefix=no
- need_version=no
- shlibpath_overrides_runpath=no
- sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
- ;;
- esac
- ;;
-
-sysv4*MP*)
- if test -d /usr/nec ;then
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
- soname_spec='$libname${shared_ext}.$major'
- shlibpath_var=LD_LIBRARY_PATH
- fi
- ;;
-
-sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
- version_type=freebsd-elf
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- if test "$with_gnu_ld" = yes; then
- sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
- else
- sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
- case $host_os in
- sco3.2v5*)
- sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
- ;;
- esac
- fi
- sys_lib_dlsearch_path_spec='/usr/lib'
- ;;
-
-tpf*)
- # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
-
-uts4*)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- ;;
-
-*)
- dynamic_linker=no
- ;;
-esac
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $dynamic_linker" >&5
-$as_echo "$dynamic_linker" >&6; }
-test "$dynamic_linker" = no && can_build_shared=no
-
-variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
-if test "$GCC" = yes; then
- variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
-fi
-
-if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
- sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
-fi
-if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
- sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
-fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking how to hardcode library paths into programs" >&5
-$as_echo_n "checking how to hardcode library paths into programs... " >&6; }
-hardcode_action=
-if test -n "$hardcode_libdir_flag_spec" ||
- test -n "$runpath_var" ||
- test "X$hardcode_automatic" = "Xyes" ; then
-
- # We can hardcode non-existent directories.
- if test "$hardcode_direct" != no &&
- # If the only mechanism to avoid hardcoding is shlibpath_var, we
- # have to relink, otherwise we might link with an installed library
- # when we should be linking with a yet-to-be-installed one
- ## test "$_LT_TAGVAR(hardcode_shlibpath_var, )" != no &&
- test "$hardcode_minus_L" != no; then
- # Linking always hardcodes the temporary library directory.
- hardcode_action=relink
- else
- # We can link without hardcoding, and we can hardcode nonexisting dirs.
- hardcode_action=immediate
- fi
-else
- # We cannot hardcode anything, or else we can only hardcode existing
- # directories.
- hardcode_action=unsupported
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $hardcode_action" >&5
-$as_echo "$hardcode_action" >&6; }
-
-if test "$hardcode_action" = relink ||
- test "$inherit_rpath" = yes; then
- # Fast installation is not supported
- enable_fast_install=no
-elif test "$shlibpath_overrides_runpath" = yes ||
- test "$enable_shared" = no; then
- # Fast installation is not necessary
- enable_fast_install=needless
-fi
-
-
-
-
-
-
- if test "x$enable_dlopen" != xyes; then
- enable_dlopen=unknown
- enable_dlopen_self=unknown
- enable_dlopen_self_static=unknown
-else
- lt_cv_dlopen=no
- lt_cv_dlopen_libs=
-
- case $host_os in
- beos*)
- lt_cv_dlopen="load_add_on"
- lt_cv_dlopen_libs=
- lt_cv_dlopen_self=yes
- ;;
-
- mingw* | pw32* | cegcc*)
- lt_cv_dlopen="LoadLibrary"
- lt_cv_dlopen_libs=
- ;;
-
- cygwin*)
- lt_cv_dlopen="dlopen"
- lt_cv_dlopen_libs=
- ;;
-
- darwin*)
- # if libdl is installed we need to link against it
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
-$as_echo_n "checking for dlopen in -ldl... " >&6; }
-if ${ac_cv_lib_dl_dlopen+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- ac_check_lib_save_LIBS=$LIBS
-LIBS="-ldl $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-/* Override any GCC internal prototype to avoid an error.
- Use char because int might match the return type of a GCC
- builtin and then its argument prototype would still apply. */
-#ifdef __cplusplus
-extern "C"
-#endif
-char dlopen ();
-int
-main ()
-{
-return dlopen ();
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- ac_cv_lib_dl_dlopen=yes
-else
- ac_cv_lib_dl_dlopen=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
-$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
-if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
- lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
-else
-
- lt_cv_dlopen="dyld"
- lt_cv_dlopen_libs=
- lt_cv_dlopen_self=yes
-
-fi
-
- ;;
-
- *)
- ac_fn_c_check_func "$LINENO" "shl_load" "ac_cv_func_shl_load"
-if test "x$ac_cv_func_shl_load" = xyes; then :
- lt_cv_dlopen="shl_load"
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for shl_load in -ldld" >&5
-$as_echo_n "checking for shl_load in -ldld... " >&6; }
-if ${ac_cv_lib_dld_shl_load+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- ac_check_lib_save_LIBS=$LIBS
-LIBS="-ldld $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-/* Override any GCC internal prototype to avoid an error.
- Use char because int might match the return type of a GCC
- builtin and then its argument prototype would still apply. */
-#ifdef __cplusplus
-extern "C"
-#endif
-char shl_load ();
-int
-main ()
-{
-return shl_load ();
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- ac_cv_lib_dld_shl_load=yes
-else
- ac_cv_lib_dld_shl_load=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_shl_load" >&5
-$as_echo "$ac_cv_lib_dld_shl_load" >&6; }
-if test "x$ac_cv_lib_dld_shl_load" = xyes; then :
- lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"
-else
- ac_fn_c_check_func "$LINENO" "dlopen" "ac_cv_func_dlopen"
-if test "x$ac_cv_func_dlopen" = xyes; then :
- lt_cv_dlopen="dlopen"
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -ldl" >&5
-$as_echo_n "checking for dlopen in -ldl... " >&6; }
-if ${ac_cv_lib_dl_dlopen+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- ac_check_lib_save_LIBS=$LIBS
-LIBS="-ldl $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-/* Override any GCC internal prototype to avoid an error.
- Use char because int might match the return type of a GCC
- builtin and then its argument prototype would still apply. */
-#ifdef __cplusplus
-extern "C"
-#endif
-char dlopen ();
-int
-main ()
-{
-return dlopen ();
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- ac_cv_lib_dl_dlopen=yes
-else
- ac_cv_lib_dl_dlopen=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dl_dlopen" >&5
-$as_echo "$ac_cv_lib_dl_dlopen" >&6; }
-if test "x$ac_cv_lib_dl_dlopen" = xyes; then :
- lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dlopen in -lsvld" >&5
-$as_echo_n "checking for dlopen in -lsvld... " >&6; }
-if ${ac_cv_lib_svld_dlopen+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- ac_check_lib_save_LIBS=$LIBS
-LIBS="-lsvld $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-/* Override any GCC internal prototype to avoid an error.
- Use char because int might match the return type of a GCC
- builtin and then its argument prototype would still apply. */
-#ifdef __cplusplus
-extern "C"
-#endif
-char dlopen ();
-int
-main ()
-{
-return dlopen ();
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- ac_cv_lib_svld_dlopen=yes
-else
- ac_cv_lib_svld_dlopen=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_svld_dlopen" >&5
-$as_echo "$ac_cv_lib_svld_dlopen" >&6; }
-if test "x$ac_cv_lib_svld_dlopen" = xyes; then :
- lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"
-else
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking for dld_link in -ldld" >&5
-$as_echo_n "checking for dld_link in -ldld... " >&6; }
-if ${ac_cv_lib_dld_dld_link+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- ac_check_lib_save_LIBS=$LIBS
-LIBS="-ldld $LIBS"
-cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h. */
-
-/* Override any GCC internal prototype to avoid an error.
- Use char because int might match the return type of a GCC
- builtin and then its argument prototype would still apply. */
-#ifdef __cplusplus
-extern "C"
-#endif
-char dld_link ();
-int
-main ()
-{
-return dld_link ();
- ;
- return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
- ac_cv_lib_dld_dld_link=yes
-else
- ac_cv_lib_dld_dld_link=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
- conftest$ac_exeext conftest.$ac_ext
-LIBS=$ac_check_lib_save_LIBS
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ac_cv_lib_dld_dld_link" >&5
-$as_echo "$ac_cv_lib_dld_dld_link" >&6; }
-if test "x$ac_cv_lib_dld_dld_link" = xyes; then :
- lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"
-fi
-
-
-fi
-
-
-fi
-
-
-fi
-
-
-fi
-
-
-fi
-
- ;;
- esac
-
- if test "x$lt_cv_dlopen" != xno; then
- enable_dlopen=yes
- else
- enable_dlopen=no
- fi
-
- case $lt_cv_dlopen in
- dlopen)
- save_CPPFLAGS="$CPPFLAGS"
- test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
-
- save_LDFLAGS="$LDFLAGS"
- wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
-
- save_LIBS="$LIBS"
- LIBS="$lt_cv_dlopen_libs $LIBS"
-
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a program can dlopen itself" >&5
-$as_echo_n "checking whether a program can dlopen itself... " >&6; }
-if ${lt_cv_dlopen_self+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test "$cross_compiling" = yes; then :
- lt_cv_dlopen_self=cross
-else
- lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
- lt_status=$lt_dlunknown
- cat > conftest.$ac_ext <<_LT_EOF
-#line $LINENO "configure"
-#include "confdefs.h"
-
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-
-#include <stdio.h>
-
-#ifdef RTLD_GLOBAL
-# define LT_DLGLOBAL RTLD_GLOBAL
-#else
-# ifdef DL_GLOBAL
-# define LT_DLGLOBAL DL_GLOBAL
-# else
-# define LT_DLGLOBAL 0
-# endif
-#endif
-
-/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
- find out it does not work in some platform. */
-#ifndef LT_DLLAZY_OR_NOW
-# ifdef RTLD_LAZY
-# define LT_DLLAZY_OR_NOW RTLD_LAZY
-# else
-# ifdef DL_LAZY
-# define LT_DLLAZY_OR_NOW DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define LT_DLLAZY_OR_NOW RTLD_NOW
-# else
-# ifdef DL_NOW
-# define LT_DLLAZY_OR_NOW DL_NOW
-# else
-# define LT_DLLAZY_OR_NOW 0
-# endif
-# endif
-# endif
-# endif
-#endif
-
-/* When -fvisbility=hidden is used, assume the code has been annotated
- correspondingly for the symbols needed. */
-#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
-int fnord () __attribute__((visibility("default")));
-#endif
-
-int fnord () { return 42; }
-int main ()
-{
- void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
- int status = $lt_dlunknown;
-
- if (self)
- {
- if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
- else
- {
- if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
- else puts (dlerror ());
- }
- /* dlclose (self); */
- }
- else
- puts (dlerror ());
-
- return status;
-}
-_LT_EOF
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
- (eval $ac_link) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
- (./conftest; exit; ) >&5 2>/dev/null
- lt_status=$?
- case x$lt_status in
- x$lt_dlno_uscore) lt_cv_dlopen_self=yes ;;
- x$lt_dlneed_uscore) lt_cv_dlopen_self=yes ;;
- x$lt_dlunknown|x*) lt_cv_dlopen_self=no ;;
- esac
- else :
- # compilation failed
- lt_cv_dlopen_self=no
- fi
-fi
-rm -fr conftest*
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self" >&5
-$as_echo "$lt_cv_dlopen_self" >&6; }
-
- if test "x$lt_cv_dlopen_self" = xyes; then
- wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
- { $as_echo "$as_me:${as_lineno-$LINENO}: checking whether a statically linked program can dlopen itself" >&5
-$as_echo_n "checking whether a statically linked program can dlopen itself... " >&6; }
-if ${lt_cv_dlopen_self_static+:} false; then :
- $as_echo_n "(cached) " >&6
-else
- if test "$cross_compiling" = yes; then :
- lt_cv_dlopen_self_static=cross
-else
- lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
- lt_status=$lt_dlunknown
- cat > conftest.$ac_ext <<_LT_EOF
-#line $LINENO "configure"
-#include "confdefs.h"
-
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-
-#include <stdio.h>
-
-#ifdef RTLD_GLOBAL
-# define LT_DLGLOBAL RTLD_GLOBAL
-#else
-# ifdef DL_GLOBAL
-# define LT_DLGLOBAL DL_GLOBAL
-# else
-# define LT_DLGLOBAL 0
-# endif
-#endif
-
-/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
- find out it does not work in some platform. */
-#ifndef LT_DLLAZY_OR_NOW
-# ifdef RTLD_LAZY
-# define LT_DLLAZY_OR_NOW RTLD_LAZY
-# else
-# ifdef DL_LAZY
-# define LT_DLLAZY_OR_NOW DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define LT_DLLAZY_OR_NOW RTLD_NOW
-# else
-# ifdef DL_NOW
-# define LT_DLLAZY_OR_NOW DL_NOW
-# else
-# define LT_DLLAZY_OR_NOW 0
-# endif
-# endif
-# endif
-# endif
-#endif
-
-/* When -fvisbility=hidden is used, assume the code has been annotated
- correspondingly for the symbols needed. */
-#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
-int fnord () __attribute__((visibility("default")));
-#endif
-
-int fnord () { return 42; }
-int main ()
-{
- void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
- int status = $lt_dlunknown;
-
- if (self)
- {
- if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
- else
- {
- if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
- else puts (dlerror ());
- }
- /* dlclose (self); */
- }
- else
- puts (dlerror ());
-
- return status;
-}
-_LT_EOF
- if { { eval echo "\"\$as_me\":${as_lineno-$LINENO}: \"$ac_link\""; } >&5
- (eval $ac_link) 2>&5
- ac_status=$?
- $as_echo "$as_me:${as_lineno-$LINENO}: \$? = $ac_status" >&5
- test $ac_status = 0; } && test -s conftest${ac_exeext} 2>/dev/null; then
- (./conftest; exit; ) >&5 2>/dev/null
- lt_status=$?
- case x$lt_status in
- x$lt_dlno_uscore) lt_cv_dlopen_self_static=yes ;;
- x$lt_dlneed_uscore) lt_cv_dlopen_self_static=yes ;;
- x$lt_dlunknown|x*) lt_cv_dlopen_self_static=no ;;
- esac
- else :
- # compilation failed
- lt_cv_dlopen_self_static=no
- fi
-fi
-rm -fr conftest*
-
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $lt_cv_dlopen_self_static" >&5
-$as_echo "$lt_cv_dlopen_self_static" >&6; }
- fi
-
- CPPFLAGS="$save_CPPFLAGS"
- LDFLAGS="$save_LDFLAGS"
- LIBS="$save_LIBS"
- ;;
- esac
-
- case $lt_cv_dlopen_self in
- yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
- *) enable_dlopen_self=unknown ;;
- esac
-
- case $lt_cv_dlopen_self_static in
- yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
- *) enable_dlopen_self_static=unknown ;;
- esac
-fi
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-striplib=
-old_striplib=
-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking whether stripping libraries is possible" >&5
-$as_echo_n "checking whether stripping libraries is possible... " >&6; }
-if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
- test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
- test -z "$striplib" && striplib="$STRIP --strip-unneeded"
- { $as_echo "$as_me:${as_lineno-$LINENO}: result: yes" >&5
-$as_echo "yes" >&6; }
-else
-# FIXME - insert some real tests, host_os isn't really good enough
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- darwin*)
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- ac_check_lib_save_LIBS=$LIBS
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-{
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-_ACEOF
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- ;
- return 0;
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-_ACEOF
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- ac_cv_lib_m_feenableexcept=no
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-_ACEOF
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-
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-{ $as_echo "$as_me:${as_lineno-$LINENO}: checking if libraries can be versioned" >&5
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-
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-
-
-
-
-
-# Additional arguments (and substitutions)
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-
-
-
-{ $as_echo "$as_me:${as_lineno-$LINENO}: pkgconfig directory is ${pkgconfigdir}" >&5
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-
-
-
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-
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-
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-ac_cs_recheck=false
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-
-SHELL=\${CONFIG_SHELL-$SHELL}
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-_ASEOF
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-with_gnu_ld='`$ECHO "$with_gnu_ld" | $SED "$delay_single_quote_subst"`'
-allow_undefined_flag='`$ECHO "$allow_undefined_flag" | $SED "$delay_single_quote_subst"`'
-no_undefined_flag='`$ECHO "$no_undefined_flag" | $SED "$delay_single_quote_subst"`'
-hardcode_libdir_flag_spec='`$ECHO "$hardcode_libdir_flag_spec" | $SED "$delay_single_quote_subst"`'
-hardcode_libdir_separator='`$ECHO "$hardcode_libdir_separator" | $SED "$delay_single_quote_subst"`'
-hardcode_direct='`$ECHO "$hardcode_direct" | $SED "$delay_single_quote_subst"`'
-hardcode_direct_absolute='`$ECHO "$hardcode_direct_absolute" | $SED "$delay_single_quote_subst"`'
-hardcode_minus_L='`$ECHO "$hardcode_minus_L" | $SED "$delay_single_quote_subst"`'
-hardcode_shlibpath_var='`$ECHO "$hardcode_shlibpath_var" | $SED "$delay_single_quote_subst"`'
-hardcode_automatic='`$ECHO "$hardcode_automatic" | $SED "$delay_single_quote_subst"`'
-inherit_rpath='`$ECHO "$inherit_rpath" | $SED "$delay_single_quote_subst"`'
-link_all_deplibs='`$ECHO "$link_all_deplibs" | $SED "$delay_single_quote_subst"`'
-always_export_symbols='`$ECHO "$always_export_symbols" | $SED "$delay_single_quote_subst"`'
-export_symbols_cmds='`$ECHO "$export_symbols_cmds" | $SED "$delay_single_quote_subst"`'
-exclude_expsyms='`$ECHO "$exclude_expsyms" | $SED "$delay_single_quote_subst"`'
-include_expsyms='`$ECHO "$include_expsyms" | $SED "$delay_single_quote_subst"`'
-prelink_cmds='`$ECHO "$prelink_cmds" | $SED "$delay_single_quote_subst"`'
-postlink_cmds='`$ECHO "$postlink_cmds" | $SED "$delay_single_quote_subst"`'
-file_list_spec='`$ECHO "$file_list_spec" | $SED "$delay_single_quote_subst"`'
-variables_saved_for_relink='`$ECHO "$variables_saved_for_relink" | $SED "$delay_single_quote_subst"`'
-need_lib_prefix='`$ECHO "$need_lib_prefix" | $SED "$delay_single_quote_subst"`'
-need_version='`$ECHO "$need_version" | $SED "$delay_single_quote_subst"`'
-version_type='`$ECHO "$version_type" | $SED "$delay_single_quote_subst"`'
-runpath_var='`$ECHO "$runpath_var" | $SED "$delay_single_quote_subst"`'
-shlibpath_var='`$ECHO "$shlibpath_var" | $SED "$delay_single_quote_subst"`'
-shlibpath_overrides_runpath='`$ECHO "$shlibpath_overrides_runpath" | $SED "$delay_single_quote_subst"`'
-libname_spec='`$ECHO "$libname_spec" | $SED "$delay_single_quote_subst"`'
-library_names_spec='`$ECHO "$library_names_spec" | $SED "$delay_single_quote_subst"`'
-soname_spec='`$ECHO "$soname_spec" | $SED "$delay_single_quote_subst"`'
-install_override_mode='`$ECHO "$install_override_mode" | $SED "$delay_single_quote_subst"`'
-postinstall_cmds='`$ECHO "$postinstall_cmds" | $SED "$delay_single_quote_subst"`'
-postuninstall_cmds='`$ECHO "$postuninstall_cmds" | $SED "$delay_single_quote_subst"`'
-finish_cmds='`$ECHO "$finish_cmds" | $SED "$delay_single_quote_subst"`'
-finish_eval='`$ECHO "$finish_eval" | $SED "$delay_single_quote_subst"`'
-hardcode_into_libs='`$ECHO "$hardcode_into_libs" | $SED "$delay_single_quote_subst"`'
-sys_lib_search_path_spec='`$ECHO "$sys_lib_search_path_spec" | $SED "$delay_single_quote_subst"`'
-sys_lib_dlsearch_path_spec='`$ECHO "$sys_lib_dlsearch_path_spec" | $SED "$delay_single_quote_subst"`'
-hardcode_action='`$ECHO "$hardcode_action" | $SED "$delay_single_quote_subst"`'
-enable_dlopen='`$ECHO "$enable_dlopen" | $SED "$delay_single_quote_subst"`'
-enable_dlopen_self='`$ECHO "$enable_dlopen_self" | $SED "$delay_single_quote_subst"`'
-enable_dlopen_self_static='`$ECHO "$enable_dlopen_self_static" | $SED "$delay_single_quote_subst"`'
-old_striplib='`$ECHO "$old_striplib" | $SED "$delay_single_quote_subst"`'
-striplib='`$ECHO "$striplib" | $SED "$delay_single_quote_subst"`'
-
-LTCC='$LTCC'
-LTCFLAGS='$LTCFLAGS'
-compiler='$compiler_DEFAULT'
-
-# A function that is used when there is no print builtin or printf.
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-{
- eval 'cat <<_LTECHO_EOF
-\$1
-_LTECHO_EOF'
-}
-
-# Quote evaled strings.
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-GREP \
-EGREP \
-FGREP \
-SHELL \
-ECHO \
-LD \
-AS \
-DLLTOOL \
-OBJDUMP \
-PATH_SEPARATOR \
-NM \
-LN_S \
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-lt_NL2SP \
-reload_flag \
-deplibs_check_method \
-file_magic_cmd \
-file_magic_glob \
-want_nocaseglob \
-sharedlib_from_linklib_cmd \
-AR \
-AR_FLAGS \
-archiver_list_spec \
-STRIP \
-RANLIB \
-CC \
-CFLAGS \
-compiler \
-lt_cv_sys_global_symbol_pipe \
-lt_cv_sys_global_symbol_to_cdecl \
-lt_cv_sys_global_symbol_to_c_name_address \
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix \
-nm_file_list_spec \
-lt_prog_compiler_no_builtin_flag \
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-MANIFEST_TOOL \
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-LIPO \
-OTOOL \
-OTOOL64 \
-shrext_cmds \
-export_dynamic_flag_spec \
-whole_archive_flag_spec \
-compiler_needs_object \
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-allow_undefined_flag \
-no_undefined_flag \
-hardcode_libdir_flag_spec \
-hardcode_libdir_separator \
-exclude_expsyms \
-include_expsyms \
-file_list_spec \
-variables_saved_for_relink \
-libname_spec \
-library_names_spec \
-soname_spec \
-install_override_mode \
-finish_eval \
-old_striplib \
-striplib; do
- case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
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- eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
- ;;
- *)
- eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
- ;;
- esac
-done
-
-# Double-quote double-evaled strings.
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-old_postuninstall_cmds \
-old_archive_cmds \
-extract_expsyms_cmds \
-old_archive_from_new_cmds \
-old_archive_from_expsyms_cmds \
-archive_cmds \
-archive_expsym_cmds \
-module_cmds \
-module_expsym_cmds \
-export_symbols_cmds \
-prelink_cmds \
-postlink_cmds \
-postinstall_cmds \
-postuninstall_cmds \
-finish_cmds \
-sys_lib_search_path_spec \
-sys_lib_dlsearch_path_spec; do
- case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
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- eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
- ;;
- *)
- eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
- ;;
- esac
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-
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-
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- setopt NO_GLOB_SUBST
-fi
-
-
- PACKAGE='$PACKAGE'
- VERSION='$VERSION'
- TIMESTAMP='$TIMESTAMP'
- RM='$RM'
- ofile='$ofile'
-
-
-
-
-_ACEOF
-
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
-
-# Handling of arguments.
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- "Makefile") CONFIG_FILES="$CONFIG_FILES Makefile" ;;
- "libpng.pc") CONFIG_FILES="$CONFIG_FILES libpng.pc:libpng.pc.in" ;;
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-
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- esac
-done
-
-
-# If the user did not use the arguments to specify the items to instantiate,
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-
-# Have a temporary directory for convenience. Make it in the build tree
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-{
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-{
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-{
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-ac_tmp=$tmp
-
-# Set up the scripts for CONFIG_FILES section.
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- ac_cs_awk_cr=$ac_cr
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-
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-
-{
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-
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-
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
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-p
-n
-b repl
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-t nl
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-' <conf$$subs.awk | sed '
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- s/\n//
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-' >>$CONFIG_STATUS || ac_write_fail=1
-rm -f conf$$subs.awk
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
-_ACAWK
-cat >>"\$ac_tmp/subs1.awk" <<_ACAWK &&
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- FS = "\a"
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-{
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- len += length(value) + length(field[++i])
- substed = 1
- } else
- len += 1 + keylen
- }
-
- print line
-}
-
-_ACAWK
-_ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
-if sed "s/$ac_cr//" < /dev/null > /dev/null 2>&1; then
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-else
- cat
-fi < "$ac_tmp/subs1.awk" > "$ac_tmp/subs.awk" \
- || as_fn_error $? "could not setup config files machinery" "$LINENO" 5
-_ACEOF
-
-# VPATH may cause trouble with some makes, so we remove sole $(srcdir),
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-h
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-s/^/:/
-s/[ ]*$/:/
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-s/:@srcdir@:/:/g
-s/^:*//
-s/:*$//
-x
-s/\(=[ ]*\).*/\1/
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-s/\n//
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-
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
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-
-# Set up the scripts for CONFIG_HEADERS section.
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-_ACEOF
-
-# Transform confdefs.h into an awk script `defines.awk', embedded as
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-
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- ac_tt=`sed -n "/$ac_delim/p" confdefs.h`
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- ac_delim="$ac_delim!$ac_delim _$ac_delim!! "
- fi
-done
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-ac_word_re=[_$as_cr_Letters][_$as_cr_alnum]*
-sed -n '
-s/.\{148\}/&'"$ac_delim"'/g
-t rset
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-s/^[ ]*#[ ]*define[ ][ ]*/ /
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-d
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-s/["\\]/\\&/g
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-t clear
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-s/\\$//
-t bsnlc
-s/["\\]/\\&/g; s/^/"/; s/$/"/p
-d
-:bsnlc
-s/["\\]/\\&/g; s/^/"/; s/$/\\\\\\n"\\/p
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-' <confdefs.h | sed '
-s/'"$ac_delim"'/"\\\
-"/g' >>$CONFIG_STATUS || ac_write_fail=1
-
-cat >>$CONFIG_STATUS <<_ACEOF || ac_write_fail=1
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- FS = "\a"
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- # Replace #undef with comments. This is necessary, for example,
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- }
- }
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-{ print }
-_ACAWK
-_ACEOF
-cat >>$CONFIG_STATUS <<\_ACEOF || ac_write_fail=1
- as_fn_error $? "could not setup config headers machinery" "$LINENO" 5
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-
-
-eval set X " :F $CONFIG_FILES :H $CONFIG_HEADERS :C $CONFIG_COMMANDS"
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-for ac_tag
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- case $ac_mode in
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- do
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- *) test -f "$srcdir/$ac_f" && ac_f="$srcdir/$ac_f";;
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- # Let's still pretend it is `configure' which instantiates (i.e., don't
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- # Neutralize special characters interpreted by sed in replacement strings.
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- esac
-
- ac_dir=`$as_dirname -- "$ac_file" ||
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- /^X\(\/\/\)[^/].*/{
- s//\1/
- q
- }
- /^X\(\/\/\)$/{
- s//\1/
- q
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- /^X\(\/\).*/{
- s//\1/
- q
- }
- s/.*/./; q'`
- as_dir="$ac_dir"; as_fn_mkdir_p
- ac_builddir=.
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-# Commands used to build a loadable module if different from building
-# a shared archive.
-module_cmds=$lt_module_cmds
-module_expsym_cmds=$lt_module_expsym_cmds
-
-# Whether we are building with GNU ld or not.
-with_gnu_ld=$lt_with_gnu_ld
-
-# Flag that allows shared libraries with undefined symbols to be built.
-allow_undefined_flag=$lt_allow_undefined_flag
-
-# Flag that enforces no undefined symbols.
-no_undefined_flag=$lt_no_undefined_flag
-
-# Flag to hardcode \$libdir into a binary during linking.
-# This must work even if \$libdir does not exist
-hardcode_libdir_flag_spec=$lt_hardcode_libdir_flag_spec
-
-# Whether we need a single "-rpath" flag with a separated argument.
-hardcode_libdir_separator=$lt_hardcode_libdir_separator
-
-# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
-# DIR into the resulting binary.
-hardcode_direct=$hardcode_direct
-
-# Set to "yes" if using DIR/libNAME\${shared_ext} during linking hardcodes
-# DIR into the resulting binary and the resulting library dependency is
-# "absolute",i.e impossible to change by setting \${shlibpath_var} if the
-# library is relocated.
-hardcode_direct_absolute=$hardcode_direct_absolute
-
-# Set to "yes" if using the -LDIR flag during linking hardcodes DIR
-# into the resulting binary.
-hardcode_minus_L=$hardcode_minus_L
-
-# Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
-# into the resulting binary.
-hardcode_shlibpath_var=$hardcode_shlibpath_var
-
-# Set to "yes" if building a shared library automatically hardcodes DIR
-# into the library and all subsequent libraries and executables linked
-# against it.
-hardcode_automatic=$hardcode_automatic
-
-# Set to yes if linker adds runtime paths of dependent libraries
-# to runtime path list.
-inherit_rpath=$inherit_rpath
-
-# Whether libtool must link a program against all its dependency libraries.
-link_all_deplibs=$link_all_deplibs
-
-# Set to "yes" if exported symbols are required.
-always_export_symbols=$always_export_symbols
-
-# The commands to list exported symbols.
-export_symbols_cmds=$lt_export_symbols_cmds
-
-# Symbols that should not be listed in the preloaded symbols.
-exclude_expsyms=$lt_exclude_expsyms
-
-# Symbols that must always be exported.
-include_expsyms=$lt_include_expsyms
-
-# Commands necessary for linking programs (against libraries) with templates.
-prelink_cmds=$lt_prelink_cmds
-
-# Commands necessary for finishing linking programs.
-postlink_cmds=$lt_postlink_cmds
-
-# Specify filename containing input files.
-file_list_spec=$lt_file_list_spec
-
-# How to hardcode a shared library path into an executable.
-hardcode_action=$hardcode_action
-
-# ### END LIBTOOL CONFIG
-
-_LT_EOF
-
- case $host_os in
- aix3*)
- cat <<\_LT_EOF >> "$cfgfile"
-# AIX sometimes has problems with the GCC collect2 program. For some
-# reason, if we set the COLLECT_NAMES environment variable, the problems
-# vanish in a puff of smoke.
-if test "X${COLLECT_NAMES+set}" != Xset; then
- COLLECT_NAMES=
- export COLLECT_NAMES
-fi
-_LT_EOF
- ;;
- esac
-
-
-ltmain="$ac_aux_dir/ltmain.sh"
-
-
- # We use sed instead of cat because bash on DJGPP gets confused if
- # if finds mixed CR/LF and LF-only lines. Since sed operates in
- # text mode, it properly converts lines to CR/LF. This bash problem
- # is reportedly fixed, but why not run on old versions too?
- sed '$q' "$ltmain" >> "$cfgfile" \
- || (rm -f "$cfgfile"; exit 1)
-
- if test x"$xsi_shell" = xyes; then
- sed -e '/^func_dirname ()$/,/^} # func_dirname /c\
-func_dirname ()\
-{\
-\ case ${1} in\
-\ */*) func_dirname_result="${1%/*}${2}" ;;\
-\ * ) func_dirname_result="${3}" ;;\
-\ esac\
-} # Extended-shell func_dirname implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_basename ()$/,/^} # func_basename /c\
-func_basename ()\
-{\
-\ func_basename_result="${1##*/}"\
-} # Extended-shell func_basename implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_dirname_and_basename ()$/,/^} # func_dirname_and_basename /c\
-func_dirname_and_basename ()\
-{\
-\ case ${1} in\
-\ */*) func_dirname_result="${1%/*}${2}" ;;\
-\ * ) func_dirname_result="${3}" ;;\
-\ esac\
-\ func_basename_result="${1##*/}"\
-} # Extended-shell func_dirname_and_basename implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_stripname ()$/,/^} # func_stripname /c\
-func_stripname ()\
-{\
-\ # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are\
-\ # positional parameters, so assign one to ordinary parameter first.\
-\ func_stripname_result=${3}\
-\ func_stripname_result=${func_stripname_result#"${1}"}\
-\ func_stripname_result=${func_stripname_result%"${2}"}\
-} # Extended-shell func_stripname implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_split_long_opt ()$/,/^} # func_split_long_opt /c\
-func_split_long_opt ()\
-{\
-\ func_split_long_opt_name=${1%%=*}\
-\ func_split_long_opt_arg=${1#*=}\
-} # Extended-shell func_split_long_opt implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_split_short_opt ()$/,/^} # func_split_short_opt /c\
-func_split_short_opt ()\
-{\
-\ func_split_short_opt_arg=${1#??}\
-\ func_split_short_opt_name=${1%"$func_split_short_opt_arg"}\
-} # Extended-shell func_split_short_opt implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_lo2o ()$/,/^} # func_lo2o /c\
-func_lo2o ()\
-{\
-\ case ${1} in\
-\ *.lo) func_lo2o_result=${1%.lo}.${objext} ;;\
-\ *) func_lo2o_result=${1} ;;\
-\ esac\
-} # Extended-shell func_lo2o implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_xform ()$/,/^} # func_xform /c\
-func_xform ()\
-{\
- func_xform_result=${1%.*}.lo\
-} # Extended-shell func_xform implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_arith ()$/,/^} # func_arith /c\
-func_arith ()\
-{\
- func_arith_result=$(( $* ))\
-} # Extended-shell func_arith implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_len ()$/,/^} # func_len /c\
-func_len ()\
-{\
- func_len_result=${#1}\
-} # Extended-shell func_len implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-fi
-
-if test x"$lt_shell_append" = xyes; then
- sed -e '/^func_append ()$/,/^} # func_append /c\
-func_append ()\
-{\
- eval "${1}+=\\${2}"\
-} # Extended-shell func_append implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- sed -e '/^func_append_quoted ()$/,/^} # func_append_quoted /c\
-func_append_quoted ()\
-{\
-\ func_quote_for_eval "${2}"\
-\ eval "${1}+=\\\\ \\$func_quote_for_eval_result"\
-} # Extended-shell func_append_quoted implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-
-
- # Save a `func_append' function call where possible by direct use of '+='
- sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
- test 0 -eq $? || _lt_function_replace_fail=:
-else
- # Save a `func_append' function call even when '+=' is not available
- sed -e 's%func_append \([a-zA-Z_]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
- test 0 -eq $? || _lt_function_replace_fail=:
-fi
-
-if test x"$_lt_function_replace_fail" = x":"; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: Unable to substitute extended shell functions in $ofile" >&5
-$as_echo "$as_me: WARNING: Unable to substitute extended shell functions in $ofile" >&2;}
-fi
-
-
- mv -f "$cfgfile" "$ofile" ||
- (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
- chmod +x "$ofile"
-
- ;;
- "libpng-config":F) chmod +x libpng-config ;;
-
- esac
-done # for ac_tag
-
-
-as_fn_exit 0
-_ACEOF
-ac_clean_files=$ac_clean_files_save
-
-test $ac_write_fail = 0 ||
- as_fn_error $? "write failure creating $CONFIG_STATUS" "$LINENO" 5
-
-
-# configure is writing to config.log, and then calls config.status.
-# config.status does its own redirection, appending to config.log.
-# Unfortunately, on DOS this fails, as config.log is still kept open
-# by configure, so config.status won't be able to write to it; its
-# output is simply discarded. So we exec the FD to /dev/null,
-# effectively closing config.log, so it can be properly (re)opened and
-# appended to by config.status. When coming back to configure, we
-# need to make the FD available again.
-if test "$no_create" != yes; then
- ac_cs_success=:
- ac_config_status_args=
- test "$silent" = yes &&
- ac_config_status_args="$ac_config_status_args --quiet"
- exec 5>/dev/null
- $SHELL $CONFIG_STATUS $ac_config_status_args || ac_cs_success=false
- exec 5>>config.log
- # Use ||, not &&, to avoid exiting from the if with $? = 1, which
- # would make configure fail if this is the last instruction.
- $ac_cs_success || as_fn_exit 1
-fi
-if test -n "$ac_unrecognized_opts" && test "$enable_option_checking" != no; then
- { $as_echo "$as_me:${as_lineno-$LINENO}: WARNING: unrecognized options: $ac_unrecognized_opts" >&5
-$as_echo "$as_me: WARNING: unrecognized options: $ac_unrecognized_opts" >&2;}
-fi
-
+++ /dev/null
-# configure.ac
-
-dnl Process this file with autoconf to produce a configure script.
-dnl
-dnl Minor upgrades (compatible ABI): increment the package version
-dnl (third field in two places below) and set the PNGLIB_RELEASE
-dnl variable.
-dnl
-dnl Major upgrades (incompatible ABI): increment the package major
-dnl version (second field, or first if desired), set the minor
-dnl to 0, set PNGLIB_MAJOR below *and* follow the instructions in
-dnl Makefile.am to upgrade the package name.
-
-dnl This is here to prevent earlier autoconf from being used, it
-dnl should not be necessary to regenerate configure if the time
-dnl stamps are correct
-AC_PREREQ([2.68])
-
-dnl Version number stuff here:
-
-AC_INIT([libpng],[1.6.3],[png-mng-implement@lists.sourceforge.net])
-AC_CONFIG_MACRO_DIR([scripts])
-
-# libpng does not follow GNU file name conventions (hence 'foreign')
-# color-tests requires automake 1.11 or later
-# silent-rules requires automake 1.11 or later
-# dist-xz requires automake 1.11 or later
-# 1.12.2 fixes a security issue in 1.11.2 and 1.12.1
-# 1.13 is required for parallel tests
-AM_INIT_AUTOMAKE([1.13 foreign dist-xz color-tests silent-rules])
-# The following line causes --disable-maintainer-mode to be the default to
-# configure, this is necessary because libpng distributions cannot rely on the
-# time stamps of the autotools generated files being correct
-AM_MAINTAINER_MODE
-
-dnl configure.ac and Makefile.am expect automake 1.11.2 or a compatible later
-dnl version; aclocal.m4 will generate a failure if you use a prior version of
-dnl automake, so the following is not necessary (and is not defined anyway):
-dnl AM_PREREQ([1.11.2])
-dnl stop configure from automagically running automake
-
-PNGLIB_VERSION=1.6.3
-PNGLIB_MAJOR=1
-PNGLIB_MINOR=6
-PNGLIB_RELEASE=3
-
-dnl End of version number stuff
-
-AC_CONFIG_SRCDIR([pngget.c])
-AC_CONFIG_HEADERS([config.h])
-
-# Checks for programs.
-AC_LANG([C])
-AC_PROG_CC
-AM_PROG_AS
-LT_PATH_LD
-AC_PROG_CPP
-AC_PROG_AWK
-AC_PROG_INSTALL
-AC_PROG_LN_S
-AC_PROG_MAKE_SET
-
-dnl libtool/libtoolize; version 2.4.2 is the tested version, this or any
-dnl compatible later version may be used
-LT_INIT([win32-dll])
-LT_PREREQ([2.4.2])
-
-# Some awks crash when confronted with pnglibconf.dfa, do a test run now
-# to make sure this doesn't happen
-AC_MSG_CHECKING([that AWK works])
-if ${AWK} -f ${srcdir}/scripts/options.awk out="/dev/null" version=search\
- ${srcdir}/pngconf.h ${srcdir}/scripts/pnglibconf.dfa\
- ${srcdir}/pngusr.dfa 1>&2
-then
- AC_MSG_RESULT([ok])
-else
- AC_MSG_FAILURE([failed], 1)
-fi
-
-# This is a remnant of the old cc -E validation, where it may have been
-# necessary to use a different preprocessor for .dfn files
-DFNCPP="$CPP"
-AC_SUBST(DFNCPP)
-
-# -Werror cannot be passed to GCC in CFLAGS because configure will fail (it
-# checks the compiler with a program that generates a warning), add the
-# following option to deal with this
-AC_ARG_VAR(PNG_COPTS,
- [additional flags for the C compiler, use this for options that would]
- [cause configure itself to fail])
-AC_ARG_ENABLE(werror,
- AS_HELP_STRING([[[--enable-werror[=OPT]]]],
- [Pass -Werror or the given argument to the compiler if it is supported]),
- [test "$enable_werror" = "yes" && enable_werror="-Werror"
- if test "$enable_werror" != "no"; then
- sav_CFLAGS="$CFLAGS"
- CFLAGS="$enable_werror $CFLAGS"
- AC_MSG_CHECKING([if the compiler allows $enable_werror])
- AC_COMPILE_IFELSE(
- [AC_LANG_SOURCE([
- [int main(int argc, char **argv){]
- [return argv[argc-1][0];]
- [}]])],
- AC_MSG_RESULT(yes)
- PNG_COPTS="$PNG_COPTS $enable_werror",
- AC_MSG_RESULT(no))
- CFLAGS="$sav_CFLAGS"
- fi],)
-
-# Checks for header files.
-AC_HEADER_STDC
-
-# Checks for typedefs, structures, and compiler characteristics.
-AC_C_CONST
-AC_TYPE_SIZE_T
-AC_STRUCT_TM
-AC_C_RESTRICT
-
-# Checks for library functions.
-AC_FUNC_STRTOD
-AC_CHECK_FUNCS([memset], , AC_MSG_ERROR(memset not found in libc))
-AC_CHECK_FUNCS([pow], , AC_CHECK_LIB(m, pow, , AC_MSG_ERROR(cannot find pow)) )
-AC_ARG_WITH(zlib-prefix,
- AS_HELP_STRING([[[--with-zlib-prefix]]],
- [prefix that may have been used in installed zlib]),
- [ZPREFIX=${withval}],
- [ZPREFIX='z_'])
-AC_CHECK_LIB(z, zlibVersion, ,
- AC_CHECK_LIB(z, ${ZPREFIX}zlibVersion, , AC_MSG_ERROR(zlib not installed)))
-
-# The following is for pngvalid, to ensure it catches FP errors even on
-# platforms that don't enable FP exceptions, the function appears in the math
-# library (typically), it's not an error if it is not found.
-AC_CHECK_LIB([m], [feenableexcept])
-AC_CHECK_FUNCS([feenableexcept])
-
-AC_MSG_CHECKING([if using Solaris linker])
-SLD=`$LD --version 2>&1 | grep Solaris`
-if test "$SLD"; then
- have_solaris_ld=yes
- AC_MSG_RESULT(yes)
-else
- have_solaris_ld=no
- AC_MSG_RESULT(no)
-fi
-AM_CONDITIONAL(HAVE_SOLARIS_LD, test "$have_solaris_ld" = "yes")
-
-AC_MSG_CHECKING([if libraries can be versioned])
-# Special case for PE/COFF platforms: ld reports
-# support for version-script, but doesn't actually
-# DO anything with it.
-case $host in
-*cygwin* | *mingw32* | *interix* )
- have_ld_version_script=no
- AC_MSG_RESULT(no)
-;;
-* )
-
-if test "$have_solaris_ld" = "yes"; then
- GLD=`$LD --help < /dev/null 2>&1 | grep 'M mapfile'`
-else
- GLD=`$LD --help < /dev/null 2>/dev/null | grep version-script`
-fi
-
-if test "$GLD"; then
- have_ld_version_script=yes
- AC_MSG_RESULT(yes)
-else
- have_ld_version_script=no
- AC_MSG_RESULT(no)
- AC_MSG_WARN(*** You have not enabled versioned symbols.)
-fi
-;;
-esac
-
-AM_CONDITIONAL(HAVE_LD_VERSION_SCRIPT, test "$have_ld_version_script" = "yes")
-
-if test "$have_ld_version_script" = "yes"; then
- AC_MSG_CHECKING([for symbol prefix])
- SYMBOL_PREFIX=`echo "PREFIX=__USER_LABEL_PREFIX__" \
- | ${CPP-${CC-gcc} -E} - 2>&1 \
- | ${EGREP-grep} "^PREFIX=" \
- | ${SED-sed} -e "s:^PREFIX=::" -e "s:__USER_LABEL_PREFIX__::"`
- AC_SUBST(SYMBOL_PREFIX)
- AC_MSG_RESULT($SYMBOL_PREFIX)
-fi
-
-# Substitutions for .in files
-AC_SUBST(PNGLIB_VERSION)
-AC_SUBST(PNGLIB_MAJOR)
-AC_SUBST(PNGLIB_MINOR)
-AC_SUBST(PNGLIB_RELEASE)
-
-# Additional arguments (and substitutions)
-# Allow the pkg-config directory to be set
-AC_ARG_WITH(pkgconfigdir,
- AS_HELP_STRING([[[--with-pkgconfigdir]]],
- [Use the specified pkgconfig dir (default is libdir/pkgconfig)]),
- [pkgconfigdir=${withval}],
- [pkgconfigdir='${libdir}/pkgconfig'])
-
-AC_SUBST([pkgconfigdir])
-AC_MSG_NOTICE([[pkgconfig directory is ${pkgconfigdir}]])
-
-# Make the *-config binary config scripts optional
-AC_ARG_WITH(binconfigs,
- AS_HELP_STRING([[[--with-binconfigs]]],
- [Generate shell libpng-config scripts as well as pkg-config data]
- [@<:@default=yes@:>@]),
- [if test "${withval}" = no; then
- binconfigs=
- AC_MSG_NOTICE([[libpng-config scripts will not be built]])
- else
- binconfigs='${binconfigs}'
- fi],
- [binconfigs='${binconfigs}'])
-AC_SUBST([binconfigs])
-
-# Support for prefixes to the API function names; this will generate defines
-# at the start of the build to rename exported library functions
-AC_ARG_WITH(libpng-prefix,
- AS_HELP_STRING([[[--with-libpng-prefix]]],
- [prefix libpng exported function (API) names with the given value]),
- [if test "${withval:-no}" != "no"; then
- AC_SUBST([PNG_PREFIX], [${withval}])
- fi])
-AM_CONDITIONAL([DO_PNG_PREFIX], [test "${with_libpng_prefix:-no}" != "no"])
-
-# HOST SPECIFIC OPTIONS
-# =====================
-#
-# ARM
-# ===
-#
-# ARM NEON (SIMD) support.
-
-AC_ARG_ENABLE([arm-neon],
- AS_HELP_STRING([[[--enable-arm-neon]]],
- [Enable ARM NEON optimizations: =no/off, check, api, yes/on:]
- [no/off: disable the optimizations; check: use internal checking code]
- [(deprecated and poorly supported); api: disable by default, enable by]
- [a call to png_set_option; yes/on: turn on unconditionally.]
- [If not specified: determined by the compiler.]),
- [case "$enableval" in
- no|off)
- # disable the default enabling on __ARM_NEON__ systems:
- AC_DEFINE([PNG_ARM_NEON_OPT], [0],
- [Disable ARM Neon optimizations])
- # Prevent inclusion of the assembler files below:
- enable_arm_neon=no;;
- check)
- AC_DEFINE([PNG_ARM_NEON_CHECK_SUPPORTED], [],
- [Check for ARM Neon support at run-time]);;
- api)
- AC_DEFINE([PNG_ARM_NEON_API_SUPPORTED], [],
- [Turn on ARM Neon optimizations at run-time]);;
- yes|on)
- AC_DEFINE([PNG_ARM_NEON_OPT], [2],
- [Enable ARM Neon optimizations])
- AC_MSG_WARN([--enable-arm-neon: please specify 'check' or 'api', if]
- [you want the optimizations unconditionally pass -mfpu=neon]
- [to the compiler.]);;
- *)
- AC_MSG_ERROR([--enable-arm-neon=${enable_arm_neon}: invalid value])
- esac])
-
-# Add ARM specific files to all builds where the host_cpu is arm ('arm*') or
-# where ARM optimizations were explicitly requested (this allows a fallback if a
-# future host CPU does not match 'arm*')
-
-AM_CONDITIONAL([PNG_ARM_NEON],
- [test "$enable_arm_neon" != 'no' &&
- case "$host_cpu" in
- arm*) :;;
- *) test "$enable_arm_neon" != '';;
- esac])
-
-AC_MSG_NOTICE([[Extra options for compiler: $PNG_COPTS]])
-
-# Config files, substituting as above
-AC_CONFIG_FILES([Makefile libpng.pc:libpng.pc.in])
-AC_CONFIG_FILES([libpng-config:libpng-config.in],
- [chmod +x libpng-config])
-
-AC_OUTPUT
+++ /dev/null
-#! /bin/sh
-# depcomp - compile a program generating dependencies as side-effects
-
-scriptversion=2012-10-18.11; # UTC
-
-# Copyright (C) 1999-2012 Free Software Foundation, Inc.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-# Originally written by Alexandre Oliva <oliva@dcc.unicamp.br>.
-
-case $1 in
- '')
- echo "$0: No command. Try '$0 --help' for more information." 1>&2
- exit 1;
- ;;
- -h | --h*)
- cat <<\EOF
-Usage: depcomp [--help] [--version] PROGRAM [ARGS]
-
-Run PROGRAMS ARGS to compile a file, generating dependencies
-as side-effects.
-
-Environment variables:
- depmode Dependency tracking mode.
- source Source file read by 'PROGRAMS ARGS'.
- object Object file output by 'PROGRAMS ARGS'.
- DEPDIR directory where to store dependencies.
- depfile Dependency file to output.
- tmpdepfile Temporary file to use when outputting dependencies.
- libtool Whether libtool is used (yes/no).
-
-Report bugs to <bug-automake@gnu.org>.
-EOF
- exit $?
- ;;
- -v | --v*)
- echo "depcomp $scriptversion"
- exit $?
- ;;
-esac
-
-# Get the directory component of the given path, and save it in the
-# global variables '$dir'. Note that this directory component will
-# be either empty or ending with a '/' character. This is deliberate.
-set_dir_from ()
-{
- case $1 in
- */*) dir=`echo "$1" | sed -e 's|/[^/]*$|/|'`;;
- *) dir=;;
- esac
-}
-
-# Get the suffix-stripped basename of the given path, and save it the
-# global variable '$base'.
-set_base_from ()
-{
- base=`echo "$1" | sed -e 's|^.*/||' -e 's/\.[^.]*$//'`
-}
-
-# If no dependency file was actually created by the compiler invocation,
-# we still have to create a dummy depfile, to avoid errors with the
-# Makefile "include basename.Plo" scheme.
-make_dummy_depfile ()
-{
- echo "#dummy" > "$depfile"
-}
-
-# Factor out some common post-processing of the generated depfile.
-# Requires the auxiliary global variable '$tmpdepfile' to be set.
-aix_post_process_depfile ()
-{
- # If the compiler actually managed to produce a dependency file,
- # post-process it.
- if test -f "$tmpdepfile"; then
- # Each line is of the form 'foo.o: dependency.h'.
- # Do two passes, one to just change these to
- # $object: dependency.h
- # and one to simply output
- # dependency.h:
- # which is needed to avoid the deleted-header problem.
- { sed -e "s,^.*\.[$lower]*:,$object:," < "$tmpdepfile"
- sed -e "s,^.*\.[$lower]*:[$tab ]*,," -e 's,$,:,' < "$tmpdepfile"
- } > "$depfile"
- rm -f "$tmpdepfile"
- else
- make_dummy_depfile
- fi
-}
-
-# A tabulation character.
-tab=' '
-# A newline character.
-nl='
-'
-# Character ranges might be problematic outside the C locale.
-# These definitions help.
-upper=ABCDEFGHIJKLMNOPQRSTUVWXYZ
-lower=abcdefghijklmnopqrstuvwxyz
-digits=0123456789
-alpha=${upper}${lower}
-
-if test -z "$depmode" || test -z "$source" || test -z "$object"; then
- echo "depcomp: Variables source, object and depmode must be set" 1>&2
- exit 1
-fi
-
-# Dependencies for sub/bar.o or sub/bar.obj go into sub/.deps/bar.Po.
-depfile=${depfile-`echo "$object" |
- sed 's|[^\\/]*$|'${DEPDIR-.deps}'/&|;s|\.\([^.]*\)$|.P\1|;s|Pobj$|Po|'`}
-tmpdepfile=${tmpdepfile-`echo "$depfile" | sed 's/\.\([^.]*\)$/.T\1/'`}
-
-rm -f "$tmpdepfile"
-
-# Avoid interferences from the environment.
-gccflag= dashmflag=
-
-# Some modes work just like other modes, but use different flags. We
-# parameterize here, but still list the modes in the big case below,
-# to make depend.m4 easier to write. Note that we *cannot* use a case
-# here, because this file can only contain one case statement.
-if test "$depmode" = hp; then
- # HP compiler uses -M and no extra arg.
- gccflag=-M
- depmode=gcc
-fi
-
-if test "$depmode" = dashXmstdout; then
- # This is just like dashmstdout with a different argument.
- dashmflag=-xM
- depmode=dashmstdout
-fi
-
-cygpath_u="cygpath -u -f -"
-if test "$depmode" = msvcmsys; then
- # This is just like msvisualcpp but w/o cygpath translation.
- # Just convert the backslash-escaped backslashes to single forward
- # slashes to satisfy depend.m4
- cygpath_u='sed s,\\\\,/,g'
- depmode=msvisualcpp
-fi
-
-if test "$depmode" = msvc7msys; then
- # This is just like msvc7 but w/o cygpath translation.
- # Just convert the backslash-escaped backslashes to single forward
- # slashes to satisfy depend.m4
- cygpath_u='sed s,\\\\,/,g'
- depmode=msvc7
-fi
-
-if test "$depmode" = xlc; then
- # IBM C/C++ Compilers xlc/xlC can output gcc-like dependency information.
- gccflag=-qmakedep=gcc,-MF
- depmode=gcc
-fi
-
-case "$depmode" in
-gcc3)
-## gcc 3 implements dependency tracking that does exactly what
-## we want. Yay! Note: for some reason libtool 1.4 doesn't like
-## it if -MD -MP comes after the -MF stuff. Hmm.
-## Unfortunately, FreeBSD c89 acceptance of flags depends upon
-## the command line argument order; so add the flags where they
-## appear in depend2.am. Note that the slowdown incurred here
-## affects only configure: in makefiles, %FASTDEP% shortcuts this.
- for arg
- do
- case $arg in
- -c) set fnord "$@" -MT "$object" -MD -MP -MF "$tmpdepfile" "$arg" ;;
- *) set fnord "$@" "$arg" ;;
- esac
- shift # fnord
- shift # $arg
- done
- "$@"
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile"
- exit $stat
- fi
- mv "$tmpdepfile" "$depfile"
- ;;
-
-gcc)
-## Note that this doesn't just cater to obsosete pre-3.x GCC compilers.
-## but also to in-use compilers like IMB xlc/xlC and the HP C compiler.
-## (see the conditional assignment to $gccflag above).
-## There are various ways to get dependency output from gcc. Here's
-## why we pick this rather obscure method:
-## - Don't want to use -MD because we'd like the dependencies to end
-## up in a subdir. Having to rename by hand is ugly.
-## (We might end up doing this anyway to support other compilers.)
-## - The DEPENDENCIES_OUTPUT environment variable makes gcc act like
-## -MM, not -M (despite what the docs say). Also, it might not be
-## supported by the other compilers which use the 'gcc' depmode.
-## - Using -M directly means running the compiler twice (even worse
-## than renaming).
- if test -z "$gccflag"; then
- gccflag=-MD,
- fi
- "$@" -Wp,"$gccflag$tmpdepfile"
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile"
- exit $stat
- fi
- rm -f "$depfile"
- echo "$object : \\" > "$depfile"
- # The second -e expression handles DOS-style file names with drive
- # letters.
- sed -e 's/^[^:]*: / /' \
- -e 's/^['$alpha']:\/[^:]*: / /' < "$tmpdepfile" >> "$depfile"
-## This next piece of magic avoids the "deleted header file" problem.
-## The problem is that when a header file which appears in a .P file
-## is deleted, the dependency causes make to die (because there is
-## typically no way to rebuild the header). We avoid this by adding
-## dummy dependencies for each header file. Too bad gcc doesn't do
-## this for us directly.
-## Some versions of gcc put a space before the ':'. On the theory
-## that the space means something, we add a space to the output as
-## well. hp depmode also adds that space, but also prefixes the VPATH
-## to the object. Take care to not repeat it in the output.
-## Some versions of the HPUX 10.20 sed can't process this invocation
-## correctly. Breaking it into two sed invocations is a workaround.
- tr ' ' "$nl" < "$tmpdepfile" \
- | sed -e 's/^\\$//' -e '/^$/d' -e "s|.*$object$||" -e '/:$/d' \
- | sed -e 's/$/ :/' >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-hp)
- # This case exists only to let depend.m4 do its work. It works by
- # looking at the text of this script. This case will never be run,
- # since it is checked for above.
- exit 1
- ;;
-
-sgi)
- if test "$libtool" = yes; then
- "$@" "-Wp,-MDupdate,$tmpdepfile"
- else
- "$@" -MDupdate "$tmpdepfile"
- fi
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile"
- exit $stat
- fi
- rm -f "$depfile"
-
- if test -f "$tmpdepfile"; then # yes, the sourcefile depend on other files
- echo "$object : \\" > "$depfile"
- # Clip off the initial element (the dependent). Don't try to be
- # clever and replace this with sed code, as IRIX sed won't handle
- # lines with more than a fixed number of characters (4096 in
- # IRIX 6.2 sed, 8192 in IRIX 6.5). We also remove comment lines;
- # the IRIX cc adds comments like '#:fec' to the end of the
- # dependency line.
- tr ' ' "$nl" < "$tmpdepfile" \
- | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' \
- | tr "$nl" ' ' >> "$depfile"
- echo >> "$depfile"
- # The second pass generates a dummy entry for each header file.
- tr ' ' "$nl" < "$tmpdepfile" \
- | sed -e 's/^.*\.o://' -e 's/#.*$//' -e '/^$/ d' -e 's/$/:/' \
- >> "$depfile"
- else
- make_dummy_depfile
- fi
- rm -f "$tmpdepfile"
- ;;
-
-xlc)
- # This case exists only to let depend.m4 do its work. It works by
- # looking at the text of this script. This case will never be run,
- # since it is checked for above.
- exit 1
- ;;
-
-aix)
- # The C for AIX Compiler uses -M and outputs the dependencies
- # in a .u file. In older versions, this file always lives in the
- # current directory. Also, the AIX compiler puts '$object:' at the
- # start of each line; $object doesn't have directory information.
- # Version 6 uses the directory in both cases.
- set_dir_from "$object"
- set_base_from "$object"
- if test "$libtool" = yes; then
- tmpdepfile1=$dir$base.u
- tmpdepfile2=$base.u
- tmpdepfile3=$dir.libs/$base.u
- "$@" -Wc,-M
- else
- tmpdepfile1=$dir$base.u
- tmpdepfile2=$dir$base.u
- tmpdepfile3=$dir$base.u
- "$@" -M
- fi
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
- exit $stat
- fi
-
- for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
- do
- test -f "$tmpdepfile" && break
- done
- aix_post_process_depfile
- ;;
-
-tcc)
- # tcc (Tiny C Compiler) understand '-MD -MF file' since version 0.9.26
- # FIXME: That version still under development at the moment of writing.
- # Make that this statement remains true also for stable, released
- # versions.
- # It will wrap lines (doesn't matter whether long or short) with a
- # trailing '\', as in:
- #
- # foo.o : \
- # foo.c \
- # foo.h \
- #
- # It will put a trailing '\' even on the last line, and will use leading
- # spaces rather than leading tabs (at least since its commit 0394caf7
- # "Emit spaces for -MD").
- "$@" -MD -MF "$tmpdepfile"
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile"
- exit $stat
- fi
- rm -f "$depfile"
- # Each non-empty line is of the form 'foo.o : \' or ' dep.h \'.
- # We have to change lines of the first kind to '$object: \'.
- sed -e "s|.*:|$object :|" < "$tmpdepfile" > "$depfile"
- # And for each line of the second kind, we have to emit a 'dep.h:'
- # dummy dependency, to avoid the deleted-header problem.
- sed -n -e 's|^ *\(.*\) *\\$|\1:|p' < "$tmpdepfile" >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-## The order of this option in the case statement is important, since the
-## shell code in configure will try each of these formats in the order
-## listed in this file. A plain '-MD' option would be understood by many
-## compilers, so we must ensure this comes after the gcc and icc options.
-pgcc)
- # Portland's C compiler understands '-MD'.
- # Will always output deps to 'file.d' where file is the root name of the
- # source file under compilation, even if file resides in a subdirectory.
- # The object file name does not affect the name of the '.d' file.
- # pgcc 10.2 will output
- # foo.o: sub/foo.c sub/foo.h
- # and will wrap long lines using '\' :
- # foo.o: sub/foo.c ... \
- # sub/foo.h ... \
- # ...
- set_dir_from "$object"
- # Use the source, not the object, to determine the base name, since
- # that's sadly what pgcc will do too.
- set_base_from "$source"
- tmpdepfile=$base.d
-
- # For projects that build the same source file twice into different object
- # files, the pgcc approach of using the *source* file root name can cause
- # problems in parallel builds. Use a locking strategy to avoid stomping on
- # the same $tmpdepfile.
- lockdir=$base.d-lock
- trap "
- echo '$0: caught signal, cleaning up...' >&2
- rmdir '$lockdir'
- exit 1
- " 1 2 13 15
- numtries=100
- i=$numtries
- while test $i -gt 0; do
- # mkdir is a portable test-and-set.
- if mkdir "$lockdir" 2>/dev/null; then
- # This process acquired the lock.
- "$@" -MD
- stat=$?
- # Release the lock.
- rmdir "$lockdir"
- break
- else
- # If the lock is being held by a different process, wait
- # until the winning process is done or we timeout.
- while test -d "$lockdir" && test $i -gt 0; do
- sleep 1
- i=`expr $i - 1`
- done
- fi
- i=`expr $i - 1`
- done
- trap - 1 2 13 15
- if test $i -le 0; then
- echo "$0: failed to acquire lock after $numtries attempts" >&2
- echo "$0: check lockdir '$lockdir'" >&2
- exit 1
- fi
-
- if test $stat -ne 0; then
- rm -f "$tmpdepfile"
- exit $stat
- fi
- rm -f "$depfile"
- # Each line is of the form `foo.o: dependent.h',
- # or `foo.o: dep1.h dep2.h \', or ` dep3.h dep4.h \'.
- # Do two passes, one to just change these to
- # `$object: dependent.h' and one to simply `dependent.h:'.
- sed "s,^[^:]*:,$object :," < "$tmpdepfile" > "$depfile"
- # Some versions of the HPUX 10.20 sed can't process this invocation
- # correctly. Breaking it into two sed invocations is a workaround.
- sed 's,^[^:]*: \(.*\)$,\1,;s/^\\$//;/^$/d;/:$/d' < "$tmpdepfile" \
- | sed -e 's/$/ :/' >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-hp2)
- # The "hp" stanza above does not work with aCC (C++) and HP's ia64
- # compilers, which have integrated preprocessors. The correct option
- # to use with these is +Maked; it writes dependencies to a file named
- # 'foo.d', which lands next to the object file, wherever that
- # happens to be.
- # Much of this is similar to the tru64 case; see comments there.
- set_dir_from "$object"
- set_base_from "$object"
- if test "$libtool" = yes; then
- tmpdepfile1=$dir$base.d
- tmpdepfile2=$dir.libs/$base.d
- "$@" -Wc,+Maked
- else
- tmpdepfile1=$dir$base.d
- tmpdepfile2=$dir$base.d
- "$@" +Maked
- fi
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile1" "$tmpdepfile2"
- exit $stat
- fi
-
- for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2"
- do
- test -f "$tmpdepfile" && break
- done
- if test -f "$tmpdepfile"; then
- sed -e "s,^.*\.[$lower]*:,$object:," "$tmpdepfile" > "$depfile"
- # Add 'dependent.h:' lines.
- sed -ne '2,${
- s/^ *//
- s/ \\*$//
- s/$/:/
- p
- }' "$tmpdepfile" >> "$depfile"
- else
- make_dummy_depfile
- fi
- rm -f "$tmpdepfile" "$tmpdepfile2"
- ;;
-
-tru64)
- # The Tru64 compiler uses -MD to generate dependencies as a side
- # effect. 'cc -MD -o foo.o ...' puts the dependencies into 'foo.o.d'.
- # At least on Alpha/Redhat 6.1, Compaq CCC V6.2-504 seems to put
- # dependencies in 'foo.d' instead, so we check for that too.
- # Subdirectories are respected.
- set_dir_from "$object"
- set_base_from "$object"
-
- if test "$libtool" = yes; then
- # Libtool generates 2 separate objects for the 2 libraries. These
- # two compilations output dependencies in $dir.libs/$base.o.d and
- # in $dir$base.o.d. We have to check for both files, because
- # one of the two compilations can be disabled. We should prefer
- # $dir$base.o.d over $dir.libs/$base.o.d because the latter is
- # automatically cleaned when .libs/ is deleted, while ignoring
- # the former would cause a distcleancheck panic.
- tmpdepfile1=$dir$base.o.d # libtool 1.5
- tmpdepfile2=$dir.libs/$base.o.d # Likewise.
- tmpdepfile3=$dir.libs/$base.d # Compaq CCC V6.2-504
- "$@" -Wc,-MD
- else
- tmpdepfile1=$dir$base.d
- tmpdepfile2=$dir$base.d
- tmpdepfile3=$dir$base.d
- "$@" -MD
- fi
-
- stat=$?
- if test $stat -ne 0; then
- rm -f "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
- exit $stat
- fi
-
- for tmpdepfile in "$tmpdepfile1" "$tmpdepfile2" "$tmpdepfile3"
- do
- test -f "$tmpdepfile" && break
- done
- # Same post-processing that is required for AIX mode.
- aix_post_process_depfile
- ;;
-
-msvc7)
- if test "$libtool" = yes; then
- showIncludes=-Wc,-showIncludes
- else
- showIncludes=-showIncludes
- fi
- "$@" $showIncludes > "$tmpdepfile"
- stat=$?
- grep -v '^Note: including file: ' "$tmpdepfile"
- if test $stat -ne 0; then
- rm -f "$tmpdepfile"
- exit $stat
- fi
- rm -f "$depfile"
- echo "$object : \\" > "$depfile"
- # The first sed program below extracts the file names and escapes
- # backslashes for cygpath. The second sed program outputs the file
- # name when reading, but also accumulates all include files in the
- # hold buffer in order to output them again at the end. This only
- # works with sed implementations that can handle large buffers.
- sed < "$tmpdepfile" -n '
-/^Note: including file: *\(.*\)/ {
- s//\1/
- s/\\/\\\\/g
- p
-}' | $cygpath_u | sort -u | sed -n '
-s/ /\\ /g
-s/\(.*\)/'"$tab"'\1 \\/p
-s/.\(.*\) \\/\1:/
-H
-$ {
- s/.*/'"$tab"'/
- G
- p
-}' >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-msvc7msys)
- # This case exists only to let depend.m4 do its work. It works by
- # looking at the text of this script. This case will never be run,
- # since it is checked for above.
- exit 1
- ;;
-
-#nosideeffect)
- # This comment above is used by automake to tell side-effect
- # dependency tracking mechanisms from slower ones.
-
-dashmstdout)
- # Important note: in order to support this mode, a compiler *must*
- # always write the preprocessed file to stdout, regardless of -o.
- "$@" || exit $?
-
- # Remove the call to Libtool.
- if test "$libtool" = yes; then
- while test "X$1" != 'X--mode=compile'; do
- shift
- done
- shift
- fi
-
- # Remove '-o $object'.
- IFS=" "
- for arg
- do
- case $arg in
- -o)
- shift
- ;;
- $object)
- shift
- ;;
- *)
- set fnord "$@" "$arg"
- shift # fnord
- shift # $arg
- ;;
- esac
- done
-
- test -z "$dashmflag" && dashmflag=-M
- # Require at least two characters before searching for ':'
- # in the target name. This is to cope with DOS-style filenames:
- # a dependency such as 'c:/foo/bar' could be seen as target 'c' otherwise.
- "$@" $dashmflag |
- sed "s|^[$tab ]*[^:$tab ][^:][^:]*:[$tab ]*|$object: |" > "$tmpdepfile"
- rm -f "$depfile"
- cat < "$tmpdepfile" > "$depfile"
- # Some versions of the HPUX 10.20 sed can't process this sed invocation
- # correctly. Breaking it into two sed invocations is a workaround.
- tr ' ' "$nl" < "$tmpdepfile" \
- | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
- | sed -e 's/$/ :/' >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-dashXmstdout)
- # This case only exists to satisfy depend.m4. It is never actually
- # run, as this mode is specially recognized in the preamble.
- exit 1
- ;;
-
-makedepend)
- "$@" || exit $?
- # Remove any Libtool call
- if test "$libtool" = yes; then
- while test "X$1" != 'X--mode=compile'; do
- shift
- done
- shift
- fi
- # X makedepend
- shift
- cleared=no eat=no
- for arg
- do
- case $cleared in
- no)
- set ""; shift
- cleared=yes ;;
- esac
- if test $eat = yes; then
- eat=no
- continue
- fi
- case "$arg" in
- -D*|-I*)
- set fnord "$@" "$arg"; shift ;;
- # Strip any option that makedepend may not understand. Remove
- # the object too, otherwise makedepend will parse it as a source file.
- -arch)
- eat=yes ;;
- -*|$object)
- ;;
- *)
- set fnord "$@" "$arg"; shift ;;
- esac
- done
- obj_suffix=`echo "$object" | sed 's/^.*\././'`
- touch "$tmpdepfile"
- ${MAKEDEPEND-makedepend} -o"$obj_suffix" -f"$tmpdepfile" "$@"
- rm -f "$depfile"
- # makedepend may prepend the VPATH from the source file name to the object.
- # No need to regex-escape $object, excess matching of '.' is harmless.
- sed "s|^.*\($object *:\)|\1|" "$tmpdepfile" > "$depfile"
- # Some versions of the HPUX 10.20 sed can't process the last invocation
- # correctly. Breaking it into two sed invocations is a workaround.
- sed '1,2d' "$tmpdepfile" \
- | tr ' ' "$nl" \
- | sed -e 's/^\\$//' -e '/^$/d' -e '/:$/d' \
- | sed -e 's/$/ :/' >> "$depfile"
- rm -f "$tmpdepfile" "$tmpdepfile".bak
- ;;
-
-cpp)
- # Important note: in order to support this mode, a compiler *must*
- # always write the preprocessed file to stdout.
- "$@" || exit $?
-
- # Remove the call to Libtool.
- if test "$libtool" = yes; then
- while test "X$1" != 'X--mode=compile'; do
- shift
- done
- shift
- fi
-
- # Remove '-o $object'.
- IFS=" "
- for arg
- do
- case $arg in
- -o)
- shift
- ;;
- $object)
- shift
- ;;
- *)
- set fnord "$@" "$arg"
- shift # fnord
- shift # $arg
- ;;
- esac
- done
-
- "$@" -E \
- | sed -n -e '/^# [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
- -e '/^#line [0-9][0-9]* "\([^"]*\)".*/ s:: \1 \\:p' \
- | sed '$ s: \\$::' > "$tmpdepfile"
- rm -f "$depfile"
- echo "$object : \\" > "$depfile"
- cat < "$tmpdepfile" >> "$depfile"
- sed < "$tmpdepfile" '/^$/d;s/^ //;s/ \\$//;s/$/ :/' >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-msvisualcpp)
- # Important note: in order to support this mode, a compiler *must*
- # always write the preprocessed file to stdout.
- "$@" || exit $?
-
- # Remove the call to Libtool.
- if test "$libtool" = yes; then
- while test "X$1" != 'X--mode=compile'; do
- shift
- done
- shift
- fi
-
- IFS=" "
- for arg
- do
- case "$arg" in
- -o)
- shift
- ;;
- $object)
- shift
- ;;
- "-Gm"|"/Gm"|"-Gi"|"/Gi"|"-ZI"|"/ZI")
- set fnord "$@"
- shift
- shift
- ;;
- *)
- set fnord "$@" "$arg"
- shift
- shift
- ;;
- esac
- done
- "$@" -E 2>/dev/null |
- sed -n '/^#line [0-9][0-9]* "\([^"]*\)"/ s::\1:p' | $cygpath_u | sort -u > "$tmpdepfile"
- rm -f "$depfile"
- echo "$object : \\" > "$depfile"
- sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::'"$tab"'\1 \\:p' >> "$depfile"
- echo "$tab" >> "$depfile"
- sed < "$tmpdepfile" -n -e 's% %\\ %g' -e '/^\(.*\)$/ s::\1\::p' >> "$depfile"
- rm -f "$tmpdepfile"
- ;;
-
-msvcmsys)
- # This case exists only to let depend.m4 do its work. It works by
- # looking at the text of this script. This case will never be run,
- # since it is checked for above.
- exit 1
- ;;
-
-none)
- exec "$@"
- ;;
-
-*)
- echo "Unknown depmode $depmode" 1>&2
- exit 1
- ;;
-esac
-
-exit 0
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
-# End:
+++ /dev/null
-
-#if 0 /* in case someone actually tries to compile this */
-
-/* example.c - an example of using libpng
- * Last changed in libpng 1.6.3 [July 18, 2013]
- * Maintained 1998-2013 Glenn Randers-Pehrson
- * Maintained 1996, 1997 Andreas Dilger)
- * Written 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- * To the extent possible under law, the authors have waived
- * all copyright and related or neighboring rights to this file.
- * This work is published from: United States.
- */
-
-/* This is an example of how to use libpng to read and write PNG files.
- * The file libpng-manual.txt is much more verbose then this. If you have not
- * read it, do so first. This was designed to be a starting point of an
- * implementation. This is not officially part of libpng, is hereby placed
- * in the public domain, and therefore does not require a copyright notice.
- *
- * This file does not currently compile, because it is missing certain
- * parts, like allocating memory to hold an image. You will have to
- * supply these parts to get it to compile. For an example of a minimal
- * working PNG reader/writer, see pngtest.c, included in this distribution;
- * see also the programs in the contrib directory.
- */
-
-/* The simple, but restricted, approach to reading a PNG file or data stream
- * just requires two function calls, as in the following complete program.
- * Writing a file just needs one function call, so long as the data has an
- * appropriate layout.
- *
- * The following code reads PNG image data from a file and writes it, in a
- * potentially new format, to a new file. While this code will compile there is
- * minimal (insufficient) error checking; for a more realistic version look at
- * contrib/examples/pngtopng.c
- */
-#include <stddef.h>
-#include <stdlib.h>
-#include <string.h>
-#include <stdio.h>
-#include <png.h>
-#include <zlib.h>
-
-int main(int argc, const char **argv)
-{
- if (argc == 3)
- {
- png_image image; /* The control structure used by libpng */
-
- /* Initialize the 'png_image' structure. */
- memset(&image, 0, (sizeof image));
- image.version = PNG_IMAGE_VERSION;
-
- /* The first argument is the file to read: */
- if (png_image_begin_read_from_file(&image, argv[1]))
- {
- png_bytep buffer;
-
- /* Set the format in which to read the PNG file; this code chooses a
- * simple sRGB format with a non-associated alpha channel, adequate to
- * store most images.
- */
- image.format = PNG_FORMAT_RGBA;
-
- /* Now allocate enough memory to hold the image in this format; the
- * PNG_IMAGE_SIZE macro uses the information about the image (width,
- * height and format) stored in 'image'.
- */
- buffer = malloc(PNG_IMAGE_SIZE(image));
-
- /* If enough memory was available read the image in the desired format
- * then write the result out to the new file. 'background' is not
- * necessary when reading the image because the alpha channel is
- * preserved; if it were to be removed, for example if we requested
- * PNG_FORMAT_RGB, then either a solid background color would have to
- * be supplied or the output buffer would have to be initialized to the
- * actual background of the image.
- *
- * The fourth argument to png_image_finish_read is the 'row_stride' -
- * this is the number of components allocated for the image in each
- * row. It has to be at least as big as the value returned by
- * PNG_IMAGE_ROW_STRIDE, but if you just allocate space for the
- * default, minimum, size using PNG_IMAGE_SIZE as above you can pass
- * zero.
- *
- * The final argument is a pointer to a buffer for the colormap;
- * colormaps have exactly the same format as a row of image pixels (so
- * you choose what format to make the colormap by setting
- * image.format). A colormap is only returned if
- * PNG_FORMAT_FLAG_COLORMAP is also set in image.format, so in this
- * case NULL is passed as the final argument. If you do want to force
- * all images into an index/color-mapped format then you can use:
- *
- * PNG_IMAGE_COLORMAP_SIZE(image)
- *
- * to find the maximum size of the colormap in bytes.
- */
- if (buffer != NULL &&
- png_image_finish_read(&image, NULL/*background*/, buffer,
- 0/*row_stride*/, NULL/*colormap*/))
- {
- /* Now write the image out to the second argument. In the write
- * call 'convert_to_8bit' allows 16-bit data to be squashed down to
- * 8 bits; this isn't necessary here because the original read was
- * to the 8-bit format.
- */
- if (png_image_write_to_file(&image, argv[2], 0/*convert_to_8bit*/,
- buffer, 0/*row_stride*/, NULL/*colormap*/))
- {
- /* The image has been written successfully. */
- exit(0);
- }
- }
-
- else
- {
- /* Calling png_free_image is optional unless the simplified API was
- * not run to completion. In this case if there wasn't enough
- * memory for 'buffer' we didn't complete the read, so we must free
- * the image:
- */
- if (buffer == NULL)
- png_free_image(&image);
-
- else
- free(buffer);
- }
-
- /* Something went wrong reading or writing the image. libpng stores a
- * textual message in the 'png_image' structure:
- */
- fprintf(stderr, "pngtopng: error: %s\n", image.message);
- exit (1);
- }
-
- fprintf(stderr, "pngtopng: usage: pngtopng input-file output-file\n");
- exit(1);
-}
-
-/* That's it ;-) Of course you probably want to do more with PNG files than
- * just converting them all to 32-bit RGBA PNG files; you can do that between
- * the call to png_image_finish_read and png_image_write_to_file. You can also
- * ask for the image data to be presented in a number of different formats. You
- * do this by simply changing the 'format' parameter set before allocating the
- * buffer.
- *
- * The format parameter consists of five flags that define various aspects of
- * the image, you can simply add these together to get the format or you can use
- * one of the predefined macros from png.h (as above):
- *
- * PNG_FORMAT_FLAG_COLOR: if set the image will have three color components per
- * pixel (red, green and blue), if not set the image will just have one
- * luminance (grayscale) component.
- *
- * PNG_FORMAT_FLAG_ALPHA: if set each pixel in the image will have an additional
- * alpha value; a linear value that describes the degree the image pixel
- * covers (overwrites) the contents of the existing pixel on the display.
- *
- * PNG_FORMAT_FLAG_LINEAR: if set the components of each pixel will be returned
- * as a series of 16-bit linear values, if not set the components will be
- * returned as a series of 8-bit values encoded according to the 'sRGB'
- * standard. The 8-bit format is the normal format for images intended for
- * direct display, because almost all display devices do the inverse of the
- * sRGB transformation to the data they receive. The 16-bit format is more
- * common for scientific data and image data that must be further processed;
- * because it is linear simple math can be done on the component values.
- * Regardless of the setting of this flag the alpha channel is always linear,
- * although it will be 8 bits or 16 bits wide as specified by the flag.
- *
- * PNG_FORMAT_FLAG_BGR: if set the components of a color pixel will be returned
- * in the order blue, then green, then red. If not set the pixel components
- * are in the order red, then green, then blue.
- *
- * PNG_FORMAT_FLAG_AFIRST: if set the alpha channel (if present) precedes the
- * color or grayscale components. If not set the alpha channel follows the
- * components.
- *
- * You do not have to read directly from a file. You can read from memory or,
- * on systems that support it, from a <stdio.h> FILE*. This is controlled by
- * the particular png_image_read_from_ function you call at the start. Likewise
- * on write you can write to a FILE* if your system supports it. Check the
- * macro PNG_STDIO_SUPPORTED to see if stdio support has been included in your
- * libpng build.
- *
- * If you read 16-bit (PNG_FORMAT_FLAG_LINEAR) data you may need to write it in
- * the 8-bit format for display. You do this by setting the convert_to_8bit
- * flag to 'true'.
- *
- * Don't repeatedly convert between the 8-bit and 16-bit forms. There is
- * significant data loss when 16-bit data is converted to the 8-bit encoding and
- * the current libpng implementation of convertion to 16-bit is also
- * significantly lossy. The latter will be fixed in the future, but the former
- * is unavoidable - the 8-bit format just doesn't have enough resolution.
- */
-
-/* If your program needs more information from the PNG data it reads, or if you
- * need to do more complex transformations, or minimise transformations, on the
- * data you read, then you must use one of the several lower level libpng
- * interfaces.
- *
- * All these interfaces require that you do your own error handling - your
- * program must be able to arrange for control to return to your own code any
- * time libpng encounters a problem. There are several ways to do this, but the
- * standard way is to use the ANSI-C (C90) <setjmp.h> interface to establish a
- * return point within your own code. You must do this if you do not use the
- * simplified interface (above).
- *
- * The first step is to include the header files you need, including the libpng
- * header file. Include any standard headers and feature test macros your
- * program requires before including png.h:
- */
-#include <png.h>
-
- /* The png_jmpbuf() macro, used in error handling, became available in
- * libpng version 1.0.6. If you want to be able to run your code with older
- * versions of libpng, you must define the macro yourself (but only if it
- * is not already defined by libpng!).
- */
-
-#ifndef png_jmpbuf
-# define png_jmpbuf(png_ptr) ((png_ptr)->png_jmpbuf)
-#endif
-
-/* Check to see if a file is a PNG file using png_sig_cmp(). png_sig_cmp()
- * returns zero if the image is a PNG and nonzero if it isn't a PNG.
- *
- * The function check_if_png() shown here, but not used, returns nonzero (true)
- * if the file can be opened and is a PNG, 0 (false) otherwise.
- *
- * If this call is successful, and you are going to keep the file open,
- * you should call png_set_sig_bytes(png_ptr, PNG_BYTES_TO_CHECK); once
- * you have created the png_ptr, so that libpng knows your application
- * has read that many bytes from the start of the file. Make sure you
- * don't call png_set_sig_bytes() with more than 8 bytes read or give it
- * an incorrect number of bytes read, or you will either have read too
- * many bytes (your fault), or you are telling libpng to read the wrong
- * number of magic bytes (also your fault).
- *
- * Many applications already read the first 2 or 4 bytes from the start
- * of the image to determine the file type, so it would be easiest just
- * to pass the bytes to png_sig_cmp() or even skip that if you know
- * you have a PNG file, and call png_set_sig_bytes().
- */
-#define PNG_BYTES_TO_CHECK 4
-int check_if_png(char *file_name, FILE **fp)
-{
- char buf[PNG_BYTES_TO_CHECK];
-
- /* Open the prospective PNG file. */
- if ((*fp = fopen(file_name, "rb")) == NULL)
- return 0;
-
- /* Read in some of the signature bytes */
- if (fread(buf, 1, PNG_BYTES_TO_CHECK, *fp) != PNG_BYTES_TO_CHECK)
- return 0;
-
- /* Compare the first PNG_BYTES_TO_CHECK bytes of the signature.
- Return nonzero (true) if they match */
-
- return(!png_sig_cmp(buf, (png_size_t)0, PNG_BYTES_TO_CHECK));
-}
-
-/* Read a PNG file. You may want to return an error code if the read
- * fails (depending upon the failure). There are two "prototypes" given
- * here - one where we are given the filename, and we need to open the
- * file, and the other where we are given an open file (possibly with
- * some or all of the magic bytes read - see comments above).
- */
-#ifdef open_file /* prototype 1 */
-void read_png(char *file_name) /* We need to open the file */
-{
- png_structp png_ptr;
- png_infop info_ptr;
- unsigned int sig_read = 0;
- png_uint_32 width, height;
- int bit_depth, color_type, interlace_type;
- FILE *fp;
-
- if ((fp = fopen(file_name, "rb")) == NULL)
- return (ERROR);
-
-#else no_open_file /* prototype 2 */
-void read_png(FILE *fp, unsigned int sig_read) /* File is already open */
-{
- png_structp png_ptr;
- png_infop info_ptr;
- png_uint_32 width, height;
- int bit_depth, color_type, interlace_type;
-#endif no_open_file /* Only use one prototype! */
-
- /* Create and initialize the png_struct with the desired error handler
- * functions. If you want to use the default stderr and longjump method,
- * you can supply NULL for the last three parameters. We also supply the
- * the compiler header file version, so that we know if the application
- * was compiled with a compatible version of the library. REQUIRED
- */
- png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
- png_voidp user_error_ptr, user_error_fn, user_warning_fn);
-
- if (png_ptr == NULL)
- {
- fclose(fp);
- return (ERROR);
- }
-
- /* Allocate/initialize the memory for image information. REQUIRED. */
- info_ptr = png_create_info_struct(png_ptr);
- if (info_ptr == NULL)
- {
- fclose(fp);
- png_destroy_read_struct(&png_ptr, NULL, NULL);
- return (ERROR);
- }
-
- /* Set error handling if you are using the setjmp/longjmp method (this is
- * the normal method of doing things with libpng). REQUIRED unless you
- * set up your own error handlers in the png_create_read_struct() earlier.
- */
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- /* Free all of the memory associated with the png_ptr and info_ptr */
- png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
- fclose(fp);
- /* If we get here, we had a problem reading the file */
- return (ERROR);
- }
-
- /* One of the following I/O initialization methods is REQUIRED */
-#ifdef streams /* PNG file I/O method 1 */
- /* Set up the input control if you are using standard C streams */
- png_init_io(png_ptr, fp);
-
-#else no_streams /* PNG file I/O method 2 */
- /* If you are using replacement read functions, instead of calling
- * png_init_io() here you would call:
- */
- png_set_read_fn(png_ptr, (void *)user_io_ptr, user_read_fn);
- /* where user_io_ptr is a structure you want available to the callbacks */
-#endif no_streams /* Use only one I/O method! */
-
- /* If we have already read some of the signature */
- png_set_sig_bytes(png_ptr, sig_read);
-
-#ifdef hilevel
- /*
- * If you have enough memory to read in the entire image at once,
- * and you need to specify only transforms that can be controlled
- * with one of the PNG_TRANSFORM_* bits (this presently excludes
- * quantizing, filling, setting background, and doing gamma
- * adjustment), then you can read the entire image (including
- * pixels) into the info structure with this call:
- */
- png_read_png(png_ptr, info_ptr, png_transforms, NULL);
-
-#else
- /* OK, you're doing it the hard way, with the lower-level functions */
-
- /* The call to png_read_info() gives us all of the information from the
- * PNG file before the first IDAT (image data chunk). REQUIRED
- */
- png_read_info(png_ptr, info_ptr);
-
- png_get_IHDR(png_ptr, info_ptr, &width, &height, &bit_depth, &color_type,
- &interlace_type, NULL, NULL);
-
- /* Set up the data transformations you want. Note that these are all
- * optional. Only call them if you want/need them. Many of the
- * transformations only work on specific types of images, and many
- * are mutually exclusive.
- */
-
- /* Tell libpng to strip 16 bit/color files down to 8 bits/color.
- * Use accurate scaling if it's available, otherwise just chop off the
- * low byte.
- */
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
- png_set_scale_16(png_ptr);
-#else
- png_set_strip_16(png_ptr);
-#endif
-
- /* Strip alpha bytes from the input data without combining with the
- * background (not recommended).
- */
- png_set_strip_alpha(png_ptr);
-
- /* Extract multiple pixels with bit depths of 1, 2, and 4 from a single
- * byte into separate bytes (useful for paletted and grayscale images).
- */
- png_set_packing(png_ptr);
-
- /* Change the order of packed pixels to least significant bit first
- * (not useful if you are using png_set_packing). */
- png_set_packswap(png_ptr);
-
- /* Expand paletted colors into true RGB triplets */
- if (color_type == PNG_COLOR_TYPE_PALETTE)
- png_set_palette_to_rgb(png_ptr);
-
- /* Expand grayscale images to the full 8 bits from 1, 2, or 4 bits/pixel */
- if (color_type == PNG_COLOR_TYPE_GRAY && bit_depth < 8)
- png_set_expand_gray_1_2_4_to_8(png_ptr);
-
- /* Expand paletted or RGB images with transparency to full alpha channels
- * so the data will be available as RGBA quartets.
- */
- if (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS))
- png_set_tRNS_to_alpha(png_ptr);
-
- /* Set the background color to draw transparent and alpha images over.
- * It is possible to set the red, green, and blue components directly
- * for paletted images instead of supplying a palette index. Note that
- * even if the PNG file supplies a background, you are not required to
- * use it - you should use the (solid) application background if it has one.
- */
-
- png_color_16 my_background, *image_background;
-
- if (png_get_bKGD(png_ptr, info_ptr, &image_background))
- png_set_background(png_ptr, image_background,
- PNG_BACKGROUND_GAMMA_FILE, 1, 1.0);
- else
- png_set_background(png_ptr, &my_background,
- PNG_BACKGROUND_GAMMA_SCREEN, 0, 1.0);
-
- /* Some suggestions as to how to get a screen gamma value
- *
- * Note that screen gamma is the display_exponent, which includes
- * the CRT_exponent and any correction for viewing conditions
- */
- if (/* We have a user-defined screen gamma value */)
- {
- screen_gamma = user-defined screen_gamma;
- }
- /* This is one way that applications share the same screen gamma value */
- else if ((gamma_str = getenv("SCREEN_GAMMA")) != NULL)
- {
- screen_gamma = atof(gamma_str);
- }
- /* If we don't have another value */
- else
- {
- screen_gamma = PNG_DEFAULT_sRGB; /* A good guess for a PC monitor
- in a dimly lit room */
- screen_gamma = PNG_GAMMA_MAC_18 or 1.0; /* Good guesses for Mac systems */
- }
-
- /* Tell libpng to handle the gamma conversion for you. The final call
- * is a good guess for PC generated images, but it should be configurable
- * by the user at run time by the user. It is strongly suggested that
- * your application support gamma correction.
- */
-
- int intent;
-
- if (png_get_sRGB(png_ptr, info_ptr, &intent))
- png_set_gamma(png_ptr, screen_gamma, PNG_DEFAULT_sRGB);
- else
- {
- double image_gamma;
- if (png_get_gAMA(png_ptr, info_ptr, &image_gamma))
- png_set_gamma(png_ptr, screen_gamma, image_gamma);
- else
- png_set_gamma(png_ptr, screen_gamma, 0.45455);
- }
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
- /* Quantize RGB files down to 8 bit palette or reduce palettes
- * to the number of colors available on your screen.
- */
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- int num_palette;
- png_colorp palette;
-
- /* This reduces the image to the application supplied palette */
- if (/* We have our own palette */)
- {
- /* An array of colors to which the image should be quantized */
- png_color std_color_cube[MAX_SCREEN_COLORS];
-
- png_set_quantize(png_ptr, std_color_cube, MAX_SCREEN_COLORS,
- MAX_SCREEN_COLORS, NULL, 0);
- }
- /* This reduces the image to the palette supplied in the file */
- else if (png_get_PLTE(png_ptr, info_ptr, &palette, &num_palette))
- {
- png_uint_16p histogram = NULL;
-
- png_get_hIST(png_ptr, info_ptr, &histogram);
-
- png_set_quantize(png_ptr, palette, num_palette,
- max_screen_colors, histogram, 0);
- }
- }
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */
-
- /* Invert monochrome files to have 0 as white and 1 as black */
- png_set_invert_mono(png_ptr);
-
- /* If you want to shift the pixel values from the range [0,255] or
- * [0,65535] to the original [0,7] or [0,31], or whatever range the
- * colors were originally in:
- */
- if (png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
- {
- png_color_8p sig_bit_p;
-
- png_get_sBIT(png_ptr, info_ptr, &sig_bit_p);
- png_set_shift(png_ptr, sig_bit_p);
- }
-
- /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
- if (color_type & PNG_COLOR_MASK_COLOR)
- png_set_bgr(png_ptr);
-
- /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
- png_set_swap_alpha(png_ptr);
-
- /* Swap bytes of 16 bit files to least significant byte first */
- png_set_swap(png_ptr);
-
- /* Add filler (or alpha) byte (before/after each RGB triplet) */
- png_set_filler(png_ptr, 0xff, PNG_FILLER_AFTER);
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* Turn on interlace handling. REQUIRED if you are not using
- * png_read_image(). To see how to handle interlacing passes,
- * see the png_read_row() method below:
- */
- number_passes = png_set_interlace_handling(png_ptr);
-#else
- number_passes = 1;
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-
-
- /* Optional call to gamma correct and add the background to the palette
- * and update info structure. REQUIRED if you are expecting libpng to
- * update the palette for you (ie you selected such a transform above).
- */
- png_read_update_info(png_ptr, info_ptr);
-
- /* Allocate the memory to hold the image using the fields of info_ptr. */
-
- /* The easiest way to read the image: */
- png_bytep row_pointers[height];
-
- /* Clear the pointer array */
- for (row = 0; row < height; row++)
- row_pointers[row] = NULL;
-
- for (row = 0; row < height; row++)
- row_pointers[row] = png_malloc(png_ptr, png_get_rowbytes(png_ptr,
- info_ptr));
-
- /* Now it's time to read the image. One of these methods is REQUIRED */
-#ifdef entire /* Read the entire image in one go */
- png_read_image(png_ptr, row_pointers);
-
-#else no_entire /* Read the image one or more scanlines at a time */
- /* The other way to read images - deal with interlacing: */
-
- for (pass = 0; pass < number_passes; pass++)
- {
-#ifdef single /* Read the image a single row at a time */
- for (y = 0; y < height; y++)
- {
- png_read_rows(png_ptr, &row_pointers[y], NULL, 1);
- }
-
-#else no_single /* Read the image several rows at a time */
- for (y = 0; y < height; y += number_of_rows)
- {
-#ifdef sparkle /* Read the image using the "sparkle" effect. */
- png_read_rows(png_ptr, &row_pointers[y], NULL,
- number_of_rows);
-#else no_sparkle /* Read the image using the "rectangle" effect */
- png_read_rows(png_ptr, NULL, &row_pointers[y],
- number_of_rows);
-#endif no_sparkle /* Use only one of these two methods */
- }
-
- /* If you want to display the image after every pass, do so here */
-#endif no_single /* Use only one of these two methods */
- }
-#endif no_entire /* Use only one of these two methods */
-
- /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
- png_read_end(png_ptr, info_ptr);
-#endif hilevel
-
- /* At this point you have read the entire image */
-
- /* Clean up after the read, and free any memory allocated - REQUIRED */
- png_destroy_read_struct(&png_ptr, &info_ptr, NULL);
-
- /* Close the file */
- fclose(fp);
-
- /* That's it */
- return (OK);
-}
-
-/* Progressively read a file */
-
-int
-initialize_png_reader(png_structp *png_ptr, png_infop *info_ptr)
-{
- /* Create and initialize the png_struct with the desired error handler
- * functions. If you want to use the default stderr and longjump method,
- * you can supply NULL for the last three parameters. We also check that
- * the library version is compatible in case we are using dynamically
- * linked libraries.
- */
- *png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING,
- png_voidp user_error_ptr, user_error_fn, user_warning_fn);
-
- if (*png_ptr == NULL)
- {
- *info_ptr = NULL;
- return (ERROR);
- }
-
- *info_ptr = png_create_info_struct(png_ptr);
-
- if (*info_ptr == NULL)
- {
- png_destroy_read_struct(png_ptr, info_ptr, NULL);
- return (ERROR);
- }
-
- if (setjmp(png_jmpbuf((*png_ptr))))
- {
- png_destroy_read_struct(png_ptr, info_ptr, NULL);
- return (ERROR);
- }
-
- /* This one's new. You will need to provide all three
- * function callbacks, even if you aren't using them all.
- * If you aren't using all functions, you can specify NULL
- * parameters. Even when all three functions are NULL,
- * you need to call png_set_progressive_read_fn().
- * These functions shouldn't be dependent on global or
- * static variables if you are decoding several images
- * simultaneously. You should store stream specific data
- * in a separate struct, given as the second parameter,
- * and retrieve the pointer from inside the callbacks using
- * the function png_get_progressive_ptr(png_ptr).
- */
- png_set_progressive_read_fn(*png_ptr, (void *)stream_data,
- info_callback, row_callback, end_callback);
-
- return (OK);
-}
-
-int
-process_data(png_structp *png_ptr, png_infop *info_ptr,
- png_bytep buffer, png_uint_32 length)
-{
- if (setjmp(png_jmpbuf((*png_ptr))))
- {
- /* Free the png_ptr and info_ptr memory on error */
- png_destroy_read_struct(png_ptr, info_ptr, NULL);
- return (ERROR);
- }
-
- /* This one's new also. Simply give it chunks of data as
- * they arrive from the data stream (in order, of course).
- * On segmented machines, don't give it any more than 64K.
- * The library seems to run fine with sizes of 4K, although
- * you can give it much less if necessary (I assume you can
- * give it chunks of 1 byte, but I haven't tried with less
- * than 256 bytes yet). When this function returns, you may
- * want to display any rows that were generated in the row
- * callback, if you aren't already displaying them there.
- */
- png_process_data(*png_ptr, *info_ptr, buffer, length);
- return (OK);
-}
-
-info_callback(png_structp png_ptr, png_infop info)
-{
- /* Do any setup here, including setting any of the transformations
- * mentioned in the Reading PNG files section. For now, you _must_
- * call either png_start_read_image() or png_read_update_info()
- * after all the transformations are set (even if you don't set
- * any). You may start getting rows before png_process_data()
- * returns, so this is your last chance to prepare for that.
- */
-}
-
-row_callback(png_structp png_ptr, png_bytep new_row,
- png_uint_32 row_num, int pass)
-{
- /*
- * This function is called for every row in the image. If the
- * image is interlaced, and you turned on the interlace handler,
- * this function will be called for every row in every pass.
- *
- * In this function you will receive a pointer to new row data from
- * libpng called new_row that is to replace a corresponding row (of
- * the same data format) in a buffer allocated by your application.
- *
- * The new row data pointer "new_row" may be NULL, indicating there is
- * no new data to be replaced (in cases of interlace loading).
- *
- * If new_row is not NULL then you need to call
- * png_progressive_combine_row() to replace the corresponding row as
- * shown below:
- */
-
- /* Get pointer to corresponding row in our
- * PNG read buffer.
- */
- png_bytep old_row = ((png_bytep *)our_data)[row_num];
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* If both rows are allocated then copy the new row
- * data to the corresponding row data.
- */
- if ((old_row != NULL) && (new_row != NULL))
- png_progressive_combine_row(png_ptr, old_row, new_row);
-
- /*
- * The rows and passes are called in order, so you don't really
- * need the row_num and pass, but I'm supplying them because it
- * may make your life easier.
- *
- * For the non-NULL rows of interlaced images, you must call
- * png_progressive_combine_row() passing in the new row and the
- * old row, as demonstrated above. You can call this function for
- * NULL rows (it will just return) and for non-interlaced images
- * (it just does the memcpy for you) if it will make the code
- * easier. Thus, you can just do this for all cases:
- */
-
- png_progressive_combine_row(png_ptr, old_row, new_row);
-
- /* where old_row is what was displayed for previous rows. Note
- * that the first pass (pass == 0 really) will completely cover
- * the old row, so the rows do not have to be initialized. After
- * the first pass (and only for interlaced images), you will have
- * to pass the current row as new_row, and the function will combine
- * the old row and the new row.
- */
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-}
-
-end_callback(png_structp png_ptr, png_infop info)
-{
- /* This function is called when the whole image has been read,
- * including any chunks after the image (up to and including
- * the IEND). You will usually have the same info chunk as you
- * had in the header, although some data may have been added
- * to the comments and time fields.
- *
- * Most people won't do much here, perhaps setting a flag that
- * marks the image as finished.
- */
-}
-
-/* Write a png file */
-void write_png(char *file_name /* , ... other image information ... */)
-{
- FILE *fp;
- png_structp png_ptr;
- png_infop info_ptr;
- png_colorp palette;
-
- /* Open the file */
- fp = fopen(file_name, "wb");
- if (fp == NULL)
- return (ERROR);
-
- /* Create and initialize the png_struct with the desired error handler
- * functions. If you want to use the default stderr and longjump method,
- * you can supply NULL for the last three parameters. We also check that
- * the library version is compatible with the one used at compile time,
- * in case we are using dynamically linked libraries. REQUIRED.
- */
- png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING,
- png_voidp user_error_ptr, user_error_fn, user_warning_fn);
-
- if (png_ptr == NULL)
- {
- fclose(fp);
- return (ERROR);
- }
-
- /* Allocate/initialize the image information data. REQUIRED */
- info_ptr = png_create_info_struct(png_ptr);
- if (info_ptr == NULL)
- {
- fclose(fp);
- png_destroy_write_struct(&png_ptr, NULL);
- return (ERROR);
- }
-
- /* Set error handling. REQUIRED if you aren't supplying your own
- * error handling functions in the png_create_write_struct() call.
- */
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- /* If we get here, we had a problem writing the file */
- fclose(fp);
- png_destroy_write_struct(&png_ptr, &info_ptr);
- return (ERROR);
- }
-
- /* One of the following I/O initialization functions is REQUIRED */
-
-#ifdef streams /* I/O initialization method 1 */
- /* Set up the output control if you are using standard C streams */
- png_init_io(png_ptr, fp);
-
-#else no_streams /* I/O initialization method 2 */
- /* If you are using replacement write functions, instead of calling
- * png_init_io() here you would call
- */
- png_set_write_fn(png_ptr, (void *)user_io_ptr, user_write_fn,
- user_IO_flush_function);
- /* where user_io_ptr is a structure you want available to the callbacks */
-#endif no_streams /* Only use one initialization method */
-
-#ifdef hilevel
- /* This is the easy way. Use it if you already have all the
- * image info living in the structure. You could "|" many
- * PNG_TRANSFORM flags into the png_transforms integer here.
- */
- png_write_png(png_ptr, info_ptr, png_transforms, NULL);
-
-#else
- /* This is the hard way */
-
- /* Set the image information here. Width and height are up to 2^31,
- * bit_depth is one of 1, 2, 4, 8, or 16, but valid values also depend on
- * the color_type selected. color_type is one of PNG_COLOR_TYPE_GRAY,
- * PNG_COLOR_TYPE_GRAY_ALPHA, PNG_COLOR_TYPE_PALETTE, PNG_COLOR_TYPE_RGB,
- * or PNG_COLOR_TYPE_RGB_ALPHA. interlace is either PNG_INTERLACE_NONE or
- * PNG_INTERLACE_ADAM7, and the compression_type and filter_type MUST
- * currently be PNG_COMPRESSION_TYPE_BASE and PNG_FILTER_TYPE_BASE. REQUIRED
- */
- png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth, PNG_COLOR_TYPE_???,
- PNG_INTERLACE_????, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
-
- /* Set the palette if there is one. REQUIRED for indexed-color images */
- palette = (png_colorp)png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH
- * (sizeof (png_color)));
- /* ... Set palette colors ... */
- png_set_PLTE(png_ptr, info_ptr, palette, PNG_MAX_PALETTE_LENGTH);
- /* You must not free palette here, because png_set_PLTE only makes a link to
- * the palette that you malloced. Wait until you are about to destroy
- * the png structure.
- */
-
- /* Optional significant bit (sBIT) chunk */
- png_color_8 sig_bit;
-
- /* If we are dealing with a grayscale image then */
- sig_bit.gray = true_bit_depth;
-
- /* Otherwise, if we are dealing with a color image then */
- sig_bit.red = true_red_bit_depth;
- sig_bit.green = true_green_bit_depth;
- sig_bit.blue = true_blue_bit_depth;
-
- /* If the image has an alpha channel then */
- sig_bit.alpha = true_alpha_bit_depth;
-
- png_set_sBIT(png_ptr, info_ptr, &sig_bit);
-
-
- /* Optional gamma chunk is strongly suggested if you have any guess
- * as to the correct gamma of the image.
- */
- png_set_gAMA(png_ptr, info_ptr, gamma);
-
- /* Optionally write comments into the image */
- {
- png_text text_ptr[3];
-
- char key0[]="Title";
- char text0[]="Mona Lisa";
- text_ptr[0].key = key0;
- text_ptr[0].text = text0;
- text_ptr[0].compression = PNG_TEXT_COMPRESSION_NONE;
- text_ptr[0].itxt_length = 0;
- text_ptr[0].lang = NULL;
- text_ptr[0].lang_key = NULL;
-
- char key1[]="Author";
- char text1[]="Leonardo DaVinci";
- text_ptr[1].key = key1;
- text_ptr[1].text = text1;
- text_ptr[1].compression = PNG_TEXT_COMPRESSION_NONE;
- text_ptr[1].itxt_length = 0;
- text_ptr[1].lang = NULL;
- text_ptr[1].lang_key = NULL;
-
- char key2[]="Description";
- char text2[]="<long text>";
- text_ptr[2].key = key2;
- text_ptr[2].text = text2;
- text_ptr[2].compression = PNG_TEXT_COMPRESSION_zTXt;
- text_ptr[2].itxt_length = 0;
- text_ptr[2].lang = NULL;
- text_ptr[2].lang_key = NULL;
-
- png_set_text(write_ptr, write_info_ptr, text_ptr, 3);
- }
-
- /* Other optional chunks like cHRM, bKGD, tRNS, tIME, oFFs, pHYs */
-
- /* Note that if sRGB is present the gAMA and cHRM chunks must be ignored
- * on read and, if your application chooses to write them, they must
- * be written in accordance with the sRGB profile
- */
-
- /* Write the file header information. REQUIRED */
- png_write_info(png_ptr, info_ptr);
-
- /* If you want, you can write the info in two steps, in case you need to
- * write your private chunk ahead of PLTE:
- *
- * png_write_info_before_PLTE(write_ptr, write_info_ptr);
- * write_my_chunk();
- * png_write_info(png_ptr, info_ptr);
- *
- * However, given the level of known- and unknown-chunk support in 1.2.0
- * and up, this should no longer be necessary.
- */
-
- /* Once we write out the header, the compression type on the text
- * chunks gets changed to PNG_TEXT_COMPRESSION_NONE_WR or
- * PNG_TEXT_COMPRESSION_zTXt_WR, so it doesn't get written out again
- * at the end.
- */
-
- /* Set up the transformations you want. Note that these are
- * all optional. Only call them if you want them.
- */
-
- /* Invert monochrome pixels */
- png_set_invert_mono(png_ptr);
-
- /* Shift the pixels up to a legal bit depth and fill in
- * as appropriate to correctly scale the image.
- */
- png_set_shift(png_ptr, &sig_bit);
-
- /* Pack pixels into bytes */
- png_set_packing(png_ptr);
-
- /* Swap location of alpha bytes from ARGB to RGBA */
- png_set_swap_alpha(png_ptr);
-
- /* Get rid of filler (OR ALPHA) bytes, pack XRGB/RGBX/ARGB/RGBA into
- * RGB (4 channels -> 3 channels). The second parameter is not used.
- */
- png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
-
- /* Flip BGR pixels to RGB */
- png_set_bgr(png_ptr);
-
- /* Swap bytes of 16-bit files to most significant byte first */
- png_set_swap(png_ptr);
-
- /* Swap bits of 1, 2, 4 bit packed pixel formats */
- png_set_packswap(png_ptr);
-
- /* Turn on interlace handling if you are not using png_write_image() */
- if (interlacing)
- number_passes = png_set_interlace_handling(png_ptr);
-
- else
- number_passes = 1;
-
- /* The easiest way to write the image (you may have a different memory
- * layout, however, so choose what fits your needs best). You need to
- * use the first method if you aren't handling interlacing yourself.
- */
- png_uint_32 k, height, width;
-
- /* In this example, "image" is a one-dimensional array of bytes */
- png_byte image[height*width*bytes_per_pixel];
-
- png_bytep row_pointers[height];
-
- if (height > PNG_UINT_32_MAX/(sizeof (png_bytep)))
- png_error (png_ptr, "Image is too tall to process in memory");
-
- /* Set up pointers into your "image" byte array */
- for (k = 0; k < height; k++)
- row_pointers[k] = image + k*width*bytes_per_pixel;
-
- /* One of the following output methods is REQUIRED */
-
-#ifdef entire /* Write out the entire image data in one call */
- png_write_image(png_ptr, row_pointers);
-
- /* The other way to write the image - deal with interlacing */
-
-#else no_entire /* Write out the image data by one or more scanlines */
-
- /* The number of passes is either 1 for non-interlaced images,
- * or 7 for interlaced images.
- */
- for (pass = 0; pass < number_passes; pass++)
- {
- /* Write a few rows at a time. */
- png_write_rows(png_ptr, &row_pointers[first_row], number_of_rows);
-
- /* If you are only writing one row at a time, this works */
- for (y = 0; y < height; y++)
- png_write_rows(png_ptr, &row_pointers[y], 1);
- }
-#endif no_entire /* Use only one output method */
-
- /* You can write optional chunks like tEXt, zTXt, and tIME at the end
- * as well. Shouldn't be necessary in 1.2.0 and up as all the public
- * chunks are supported and you can use png_set_unknown_chunks() to
- * register unknown chunks into the info structure to be written out.
- */
-
- /* It is REQUIRED to call this to finish writing the rest of the file */
- png_write_end(png_ptr, info_ptr);
-#endif hilevel
-
- /* If you png_malloced a palette, free it here (don't free info_ptr->palette,
- * as recommended in versions 1.0.5m and earlier of this example; if
- * libpng mallocs info_ptr->palette, libpng will free it). If you
- * allocated it with malloc() instead of png_malloc(), use free() instead
- * of png_free().
- */
- png_free(png_ptr, palette);
- palette = NULL;
-
- /* Similarly, if you png_malloced any data that you passed in with
- * png_set_something(), such as a hist or trans array, free it here,
- * when you can be sure that libpng is through with it.
- */
- png_free(png_ptr, trans);
- trans = NULL;
- /* Whenever you use png_free() it is a good idea to set the pointer to
- * NULL in case your application inadvertently tries to png_free() it
- * again. When png_free() sees a NULL it returns without action, thus
- * avoiding the double-free security problem.
- */
-
- /* Clean up after the write, and free any memory allocated */
- png_destroy_write_struct(&png_ptr, &info_ptr);
-
- /* Close the file */
- fclose(fp);
-
- /* That's it */
- return (OK);
-}
-
-#endif /* if 0 */
+++ /dev/null
-#!/bin/sh
-# install - install a program, script, or datafile
-
-scriptversion=2011-11-20.07; # UTC
-
-# This originates from X11R5 (mit/util/scripts/install.sh), which was
-# later released in X11R6 (xc/config/util/install.sh) with the
-# following copyright and license.
-#
-# Copyright (C) 1994 X Consortium
-#
-# Permission is hereby granted, free of charge, to any person obtaining a copy
-# of this software and associated documentation files (the "Software"), to
-# deal in the Software without restriction, including without limitation the
-# rights to use, copy, modify, merge, publish, distribute, sublicense, and/or
-# sell copies of the Software, and to permit persons to whom the Software is
-# furnished to do so, subject to the following conditions:
-#
-# The above copyright notice and this permission notice shall be included in
-# all copies or substantial portions of the Software.
-#
-# THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
-# IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
-# FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
-# X CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
-# AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNEC-
-# TION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
-#
-# Except as contained in this notice, the name of the X Consortium shall not
-# be used in advertising or otherwise to promote the sale, use or other deal-
-# ings in this Software without prior written authorization from the X Consor-
-# tium.
-#
-#
-# FSF changes to this file are in the public domain.
-#
-# Calling this script install-sh is preferred over install.sh, to prevent
-# 'make' implicit rules from creating a file called install from it
-# when there is no Makefile.
-#
-# This script is compatible with the BSD install script, but was written
-# from scratch.
-
-nl='
-'
-IFS=" "" $nl"
-
-# set DOITPROG to echo to test this script
-
-# Don't use :- since 4.3BSD and earlier shells don't like it.
-doit=${DOITPROG-}
-if test -z "$doit"; then
- doit_exec=exec
-else
- doit_exec=$doit
-fi
-
-# Put in absolute file names if you don't have them in your path;
-# or use environment vars.
-
-chgrpprog=${CHGRPPROG-chgrp}
-chmodprog=${CHMODPROG-chmod}
-chownprog=${CHOWNPROG-chown}
-cmpprog=${CMPPROG-cmp}
-cpprog=${CPPROG-cp}
-mkdirprog=${MKDIRPROG-mkdir}
-mvprog=${MVPROG-mv}
-rmprog=${RMPROG-rm}
-stripprog=${STRIPPROG-strip}
-
-posix_glob='?'
-initialize_posix_glob='
- test "$posix_glob" != "?" || {
- if (set -f) 2>/dev/null; then
- posix_glob=
- else
- posix_glob=:
- fi
- }
-'
-
-posix_mkdir=
-
-# Desired mode of installed file.
-mode=0755
-
-chgrpcmd=
-chmodcmd=$chmodprog
-chowncmd=
-mvcmd=$mvprog
-rmcmd="$rmprog -f"
-stripcmd=
-
-src=
-dst=
-dir_arg=
-dst_arg=
-
-copy_on_change=false
-no_target_directory=
-
-usage="\
-Usage: $0 [OPTION]... [-T] SRCFILE DSTFILE
- or: $0 [OPTION]... SRCFILES... DIRECTORY
- or: $0 [OPTION]... -t DIRECTORY SRCFILES...
- or: $0 [OPTION]... -d DIRECTORIES...
-
-In the 1st form, copy SRCFILE to DSTFILE.
-In the 2nd and 3rd, copy all SRCFILES to DIRECTORY.
-In the 4th, create DIRECTORIES.
-
-Options:
- --help display this help and exit.
- --version display version info and exit.
-
- -c (ignored)
- -C install only if different (preserve the last data modification time)
- -d create directories instead of installing files.
- -g GROUP $chgrpprog installed files to GROUP.
- -m MODE $chmodprog installed files to MODE.
- -o USER $chownprog installed files to USER.
- -s $stripprog installed files.
- -t DIRECTORY install into DIRECTORY.
- -T report an error if DSTFILE is a directory.
-
-Environment variables override the default commands:
- CHGRPPROG CHMODPROG CHOWNPROG CMPPROG CPPROG MKDIRPROG MVPROG
- RMPROG STRIPPROG
-"
-
-while test $# -ne 0; do
- case $1 in
- -c) ;;
-
- -C) copy_on_change=true;;
-
- -d) dir_arg=true;;
-
- -g) chgrpcmd="$chgrpprog $2"
- shift;;
-
- --help) echo "$usage"; exit $?;;
-
- -m) mode=$2
- case $mode in
- *' '* | *' '* | *'
-'* | *'*'* | *'?'* | *'['*)
- echo "$0: invalid mode: $mode" >&2
- exit 1;;
- esac
- shift;;
-
- -o) chowncmd="$chownprog $2"
- shift;;
-
- -s) stripcmd=$stripprog;;
-
- -t) dst_arg=$2
- # Protect names problematic for 'test' and other utilities.
- case $dst_arg in
- -* | [=\(\)!]) dst_arg=./$dst_arg;;
- esac
- shift;;
-
- -T) no_target_directory=true;;
-
- --version) echo "$0 $scriptversion"; exit $?;;
-
- --) shift
- break;;
-
- -*) echo "$0: invalid option: $1" >&2
- exit 1;;
-
- *) break;;
- esac
- shift
-done
-
-if test $# -ne 0 && test -z "$dir_arg$dst_arg"; then
- # When -d is used, all remaining arguments are directories to create.
- # When -t is used, the destination is already specified.
- # Otherwise, the last argument is the destination. Remove it from $@.
- for arg
- do
- if test -n "$dst_arg"; then
- # $@ is not empty: it contains at least $arg.
- set fnord "$@" "$dst_arg"
- shift # fnord
- fi
- shift # arg
- dst_arg=$arg
- # Protect names problematic for 'test' and other utilities.
- case $dst_arg in
- -* | [=\(\)!]) dst_arg=./$dst_arg;;
- esac
- done
-fi
-
-if test $# -eq 0; then
- if test -z "$dir_arg"; then
- echo "$0: no input file specified." >&2
- exit 1
- fi
- # It's OK to call 'install-sh -d' without argument.
- # This can happen when creating conditional directories.
- exit 0
-fi
-
-if test -z "$dir_arg"; then
- do_exit='(exit $ret); exit $ret'
- trap "ret=129; $do_exit" 1
- trap "ret=130; $do_exit" 2
- trap "ret=141; $do_exit" 13
- trap "ret=143; $do_exit" 15
-
- # Set umask so as not to create temps with too-generous modes.
- # However, 'strip' requires both read and write access to temps.
- case $mode in
- # Optimize common cases.
- *644) cp_umask=133;;
- *755) cp_umask=22;;
-
- *[0-7])
- if test -z "$stripcmd"; then
- u_plus_rw=
- else
- u_plus_rw='% 200'
- fi
- cp_umask=`expr '(' 777 - $mode % 1000 ')' $u_plus_rw`;;
- *)
- if test -z "$stripcmd"; then
- u_plus_rw=
- else
- u_plus_rw=,u+rw
- fi
- cp_umask=$mode$u_plus_rw;;
- esac
-fi
-
-for src
-do
- # Protect names problematic for 'test' and other utilities.
- case $src in
- -* | [=\(\)!]) src=./$src;;
- esac
-
- if test -n "$dir_arg"; then
- dst=$src
- dstdir=$dst
- test -d "$dstdir"
- dstdir_status=$?
- else
-
- # Waiting for this to be detected by the "$cpprog $src $dsttmp" command
- # might cause directories to be created, which would be especially bad
- # if $src (and thus $dsttmp) contains '*'.
- if test ! -f "$src" && test ! -d "$src"; then
- echo "$0: $src does not exist." >&2
- exit 1
- fi
-
- if test -z "$dst_arg"; then
- echo "$0: no destination specified." >&2
- exit 1
- fi
- dst=$dst_arg
-
- # If destination is a directory, append the input filename; won't work
- # if double slashes aren't ignored.
- if test -d "$dst"; then
- if test -n "$no_target_directory"; then
- echo "$0: $dst_arg: Is a directory" >&2
- exit 1
- fi
- dstdir=$dst
- dst=$dstdir/`basename "$src"`
- dstdir_status=0
- else
- # Prefer dirname, but fall back on a substitute if dirname fails.
- dstdir=`
- (dirname "$dst") 2>/dev/null ||
- expr X"$dst" : 'X\(.*[^/]\)//*[^/][^/]*/*$' \| \
- X"$dst" : 'X\(//\)[^/]' \| \
- X"$dst" : 'X\(//\)$' \| \
- X"$dst" : 'X\(/\)' \| . 2>/dev/null ||
- echo X"$dst" |
- sed '/^X\(.*[^/]\)\/\/*[^/][^/]*\/*$/{
- s//\1/
- q
- }
- /^X\(\/\/\)[^/].*/{
- s//\1/
- q
- }
- /^X\(\/\/\)$/{
- s//\1/
- q
- }
- /^X\(\/\).*/{
- s//\1/
- q
- }
- s/.*/./; q'
- `
-
- test -d "$dstdir"
- dstdir_status=$?
- fi
- fi
-
- obsolete_mkdir_used=false
-
- if test $dstdir_status != 0; then
- case $posix_mkdir in
- '')
- # Create intermediate dirs using mode 755 as modified by the umask.
- # This is like FreeBSD 'install' as of 1997-10-28.
- umask=`umask`
- case $stripcmd.$umask in
- # Optimize common cases.
- *[2367][2367]) mkdir_umask=$umask;;
- .*0[02][02] | .[02][02] | .[02]) mkdir_umask=22;;
-
- *[0-7])
- mkdir_umask=`expr $umask + 22 \
- - $umask % 100 % 40 + $umask % 20 \
- - $umask % 10 % 4 + $umask % 2
- `;;
- *) mkdir_umask=$umask,go-w;;
- esac
-
- # With -d, create the new directory with the user-specified mode.
- # Otherwise, rely on $mkdir_umask.
- if test -n "$dir_arg"; then
- mkdir_mode=-m$mode
- else
- mkdir_mode=
- fi
-
- posix_mkdir=false
- case $umask in
- *[123567][0-7][0-7])
- # POSIX mkdir -p sets u+wx bits regardless of umask, which
- # is incompatible with FreeBSD 'install' when (umask & 300) != 0.
- ;;
- *)
- tmpdir=${TMPDIR-/tmp}/ins$RANDOM-$$
- trap 'ret=$?; rmdir "$tmpdir/d" "$tmpdir" 2>/dev/null; exit $ret' 0
-
- if (umask $mkdir_umask &&
- exec $mkdirprog $mkdir_mode -p -- "$tmpdir/d") >/dev/null 2>&1
- then
- if test -z "$dir_arg" || {
- # Check for POSIX incompatibilities with -m.
- # HP-UX 11.23 and IRIX 6.5 mkdir -m -p sets group- or
- # other-writable bit of parent directory when it shouldn't.
- # FreeBSD 6.1 mkdir -m -p sets mode of existing directory.
- ls_ld_tmpdir=`ls -ld "$tmpdir"`
- case $ls_ld_tmpdir in
- d????-?r-*) different_mode=700;;
- d????-?--*) different_mode=755;;
- *) false;;
- esac &&
- $mkdirprog -m$different_mode -p -- "$tmpdir" && {
- ls_ld_tmpdir_1=`ls -ld "$tmpdir"`
- test "$ls_ld_tmpdir" = "$ls_ld_tmpdir_1"
- }
- }
- then posix_mkdir=:
- fi
- rmdir "$tmpdir/d" "$tmpdir"
- else
- # Remove any dirs left behind by ancient mkdir implementations.
- rmdir ./$mkdir_mode ./-p ./-- 2>/dev/null
- fi
- trap '' 0;;
- esac;;
- esac
-
- if
- $posix_mkdir && (
- umask $mkdir_umask &&
- $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir"
- )
- then :
- else
-
- # The umask is ridiculous, or mkdir does not conform to POSIX,
- # or it failed possibly due to a race condition. Create the
- # directory the slow way, step by step, checking for races as we go.
-
- case $dstdir in
- /*) prefix='/';;
- [-=\(\)!]*) prefix='./';;
- *) prefix='';;
- esac
-
- eval "$initialize_posix_glob"
-
- oIFS=$IFS
- IFS=/
- $posix_glob set -f
- set fnord $dstdir
- shift
- $posix_glob set +f
- IFS=$oIFS
-
- prefixes=
-
- for d
- do
- test X"$d" = X && continue
-
- prefix=$prefix$d
- if test -d "$prefix"; then
- prefixes=
- else
- if $posix_mkdir; then
- (umask=$mkdir_umask &&
- $doit_exec $mkdirprog $mkdir_mode -p -- "$dstdir") && break
- # Don't fail if two instances are running concurrently.
- test -d "$prefix" || exit 1
- else
- case $prefix in
- *\'*) qprefix=`echo "$prefix" | sed "s/'/'\\\\\\\\''/g"`;;
- *) qprefix=$prefix;;
- esac
- prefixes="$prefixes '$qprefix'"
- fi
- fi
- prefix=$prefix/
- done
-
- if test -n "$prefixes"; then
- # Don't fail if two instances are running concurrently.
- (umask $mkdir_umask &&
- eval "\$doit_exec \$mkdirprog $prefixes") ||
- test -d "$dstdir" || exit 1
- obsolete_mkdir_used=true
- fi
- fi
- fi
-
- if test -n "$dir_arg"; then
- { test -z "$chowncmd" || $doit $chowncmd "$dst"; } &&
- { test -z "$chgrpcmd" || $doit $chgrpcmd "$dst"; } &&
- { test "$obsolete_mkdir_used$chowncmd$chgrpcmd" = false ||
- test -z "$chmodcmd" || $doit $chmodcmd $mode "$dst"; } || exit 1
- else
-
- # Make a couple of temp file names in the proper directory.
- dsttmp=$dstdir/_inst.$$_
- rmtmp=$dstdir/_rm.$$_
-
- # Trap to clean up those temp files at exit.
- trap 'ret=$?; rm -f "$dsttmp" "$rmtmp" && exit $ret' 0
-
- # Copy the file name to the temp name.
- (umask $cp_umask && $doit_exec $cpprog "$src" "$dsttmp") &&
-
- # and set any options; do chmod last to preserve setuid bits.
- #
- # If any of these fail, we abort the whole thing. If we want to
- # ignore errors from any of these, just make sure not to ignore
- # errors from the above "$doit $cpprog $src $dsttmp" command.
- #
- { test -z "$chowncmd" || $doit $chowncmd "$dsttmp"; } &&
- { test -z "$chgrpcmd" || $doit $chgrpcmd "$dsttmp"; } &&
- { test -z "$stripcmd" || $doit $stripcmd "$dsttmp"; } &&
- { test -z "$chmodcmd" || $doit $chmodcmd $mode "$dsttmp"; } &&
-
- # If -C, don't bother to copy if it wouldn't change the file.
- if $copy_on_change &&
- old=`LC_ALL=C ls -dlL "$dst" 2>/dev/null` &&
- new=`LC_ALL=C ls -dlL "$dsttmp" 2>/dev/null` &&
-
- eval "$initialize_posix_glob" &&
- $posix_glob set -f &&
- set X $old && old=:$2:$4:$5:$6 &&
- set X $new && new=:$2:$4:$5:$6 &&
- $posix_glob set +f &&
-
- test "$old" = "$new" &&
- $cmpprog "$dst" "$dsttmp" >/dev/null 2>&1
- then
- rm -f "$dsttmp"
- else
- # Rename the file to the real destination.
- $doit $mvcmd -f "$dsttmp" "$dst" 2>/dev/null ||
-
- # The rename failed, perhaps because mv can't rename something else
- # to itself, or perhaps because mv is so ancient that it does not
- # support -f.
- {
- # Now remove or move aside any old file at destination location.
- # We try this two ways since rm can't unlink itself on some
- # systems and the destination file might be busy for other
- # reasons. In this case, the final cleanup might fail but the new
- # file should still install successfully.
- {
- test ! -f "$dst" ||
- $doit $rmcmd -f "$dst" 2>/dev/null ||
- { $doit $mvcmd -f "$dst" "$rmtmp" 2>/dev/null &&
- { $doit $rmcmd -f "$rmtmp" 2>/dev/null; :; }
- } ||
- { echo "$0: cannot unlink or rename $dst" >&2
- (exit 1); exit 1
- }
- } &&
-
- # Now rename the file to the real destination.
- $doit $mvcmd "$dsttmp" "$dst"
- }
- fi || exit 1
-
- trap '' 0
- fi
-done
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
-# End:
+++ /dev/null
-#! /bin/sh
-
-# libpng-config
-# provides configuration info for libpng.
-
-# Copyright (C) 2002, 2004, 2006, 2007 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Modeled after libxml-config.
-
-version="@PNGLIB_VERSION@"
-prefix="@prefix@"
-exec_prefix="@exec_prefix@"
-libdir="@libdir@"
-includedir="@includedir@/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
-libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@"
-all_libs="-lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@ @LIBS@"
-I_opts="-I${includedir}"
-L_opts="-L${libdir}"
-R_opts=""
-cppflags=""
-ccopts=""
-ldopts=""
-
-usage()
-{
- cat <<EOF
-Usage: $0 [OPTION] ...
-
-Known values for OPTION are:
-
- --prefix print libpng prefix
- --libdir print path to directory containing library
- --libs print library linking information
- --ccopts print compiler options
- --cppflags print pre-processor flags
- --cflags print preprocessor flags, I_opts, and compiler options
- --I_opts print "-I" include options
- --L_opts print linker "-L" flags for dynamic linking
- --R_opts print dynamic linker "-R" or "-rpath" flags
- --ldopts print linker options
- --ldflags print linker flags (ldopts, L_opts, R_opts, and libs)
- --static revise subsequent outputs for static linking
- --help print this help and exit
- --version print version information
-EOF
-
- exit $1
-}
-
-if test $# -eq 0; then
- usage 1
-fi
-
-while test $# -gt 0; do
- case "$1" in
-
- --prefix)
- echo ${prefix}
- ;;
-
- --version)
- echo ${version}
- exit 0
- ;;
-
- --help)
- usage 0
- ;;
-
- --ccopts)
- echo ${ccopts}
- ;;
-
- --cppflags)
- echo ${cppflags}
- ;;
-
- --cflags)
- echo ${I_opts} ${cppflags} ${ccopts}
- ;;
-
- --libdir)
- echo ${libdir}
- ;;
-
- --libs)
- echo ${libs}
- ;;
-
- --I_opts)
- echo ${I_opts}
- ;;
-
- --L_opts)
- echo ${L_opts}
- ;;
-
- --R_opts)
- echo ${R_opts}
- ;;
-
- --ldopts)
- echo ${ldopts}
- ;;
-
- --ldflags)
- echo ${ldopts} ${L_opts} ${R_opts} ${libs}
- ;;
-
- --static)
- R_opts=""
- libs=${all_libs}
- ;;
-
- *)
- usage
- exit 1
- ;;
- esac
- shift
-done
-
-exit 0
+++ /dev/null
-libpng-manual.txt - A description on how to use and modify libpng
-
- libpng version 1.6.3 - July 18, 2013
- Updated and distributed by Glenn Randers-Pehrson
- <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2013 Glenn Randers-Pehrson
-
- This document is released under the libpng license.
- For conditions of distribution and use, see the disclaimer
- and license in png.h
-
- Based on:
-
- libpng versions 0.97, January 1998, through 1.6.3 - July 18, 2013
- Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2013 Glenn Randers-Pehrson
-
- libpng 1.0 beta 6 version 0.96 May 28, 1997
- Updated and distributed by Andreas Dilger
- Copyright (c) 1996, 1997 Andreas Dilger
-
- libpng 1.0 beta 2 - version 0.88 January 26, 1996
- For conditions of distribution and use, see copyright
- notice in png.h. Copyright (c) 1995, 1996 Guy Eric
- Schalnat, Group 42, Inc.
-
- Updated/rewritten per request in the libpng FAQ
- Copyright (c) 1995, 1996 Frank J. T. Wojcik
- December 18, 1995 & January 20, 1996
-
- TABLE OF CONTENTS
-
- I. Introduction
- II. Structures
- III. Reading
- IV. Writing
- V. Simplified API
- VI. Modifying/Customizing libpng
- VII. MNG support
- VIII. Changes to Libpng from version 0.88
- IX. Changes to Libpng from version 1.0.x to 1.2.x
- X. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
- XI. Changes to Libpng from version 1.4.x to 1.5.x
- XII. Changes to Libpng from version 1.5.x to 1.6.x
- XIII. Detecting libpng
- XIV. Source code repository
- XV. Coding style
- XVI. Y2K Compliance in libpng
-
-I. Introduction
-
-This file describes how to use and modify the PNG reference library
-(known as libpng) for your own use. In addition to this
-file, example.c is a good starting point for using the library, as
-it is heavily commented and should include everything most people
-will need. We assume that libpng is already installed; see the
-INSTALL file for instructions on how to install libpng.
-
-For examples of libpng usage, see the files "example.c", "pngtest.c",
-and the files in the "contrib" directory, all of which are included in
-the libpng distribution.
-
-Libpng was written as a companion to the PNG specification, as a way
-of reducing the amount of time and effort it takes to support the PNG
-file format in application programs.
-
-The PNG specification (second edition), November 2003, is available as
-a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2004 (E)) at
-<http://www.w3.org/TR/2003/REC-PNG-20031110/
-The W3C and ISO documents have identical technical content.
-
-The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
-to the PNG specification (second edition) but has some additional material.
-
-The PNG-1.0 specification is available
-as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
-
-Some additional chunks are described in the special-purpose public chunks
-documents at <http://www.libpng.org/pub/png/documents/>.
-
-Other information
-about PNG, and the latest version of libpng, can be found at the PNG home
-page, <http://www.libpng.org/pub/png/>.
-
-Most users will not have to modify the library significantly; advanced
-users may want to modify it more. All attempts were made to make it as
-complete as possible, while keeping the code easy to understand.
-Currently, this library only supports C. Support for other languages
-is being considered.
-
-Libpng has been designed to handle multiple sessions at one time,
-to be easily modifiable, to be portable to the vast majority of
-machines (ANSI, K&R, 16-, 32-, and 64-bit) available, and to be easy
-to use. The ultimate goal of libpng is to promote the acceptance of
-the PNG file format in whatever way possible. While there is still
-work to be done (see the TODO file), libpng should cover the
-majority of the needs of its users.
-
-Libpng uses zlib for its compression and decompression of PNG files.
-Further information about zlib, and the latest version of zlib, can
-be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
-The zlib compression utility is a general purpose utility that is
-useful for more than PNG files, and can be used without libpng.
-See the documentation delivered with zlib for more details.
-You can usually find the source files for the zlib utility wherever you
-find the libpng source files.
-
-Libpng is thread safe, provided the threads are using different
-instances of the structures. Each thread should have its own
-png_struct and png_info instances, and thus its own image.
-Libpng does not protect itself against two threads using the
-same instance of a structure.
-
-II. Structures
-
-There are two main structures that are important to libpng, png_struct
-and png_info. Both are internal structures that are no longer exposed
-in the libpng interface (as of libpng 1.5.0).
-
-The png_info structure is designed to provide information about the
-PNG file. At one time, the fields of png_info were intended to be
-directly accessible to the user. However, this tended to cause problems
-with applications using dynamically loaded libraries, and as a result
-a set of interface functions for png_info (the png_get_*() and png_set_*()
-functions) was developed, and direct access to the png_info fields was
-deprecated..
-
-The png_struct structure is the object used by the library to decode a
-single image. As of 1.5.0 this structure is also not exposed.
-
-Almost all libpng APIs require a pointer to a png_struct as the first argument.
-Many (in particular the png_set and png_get APIs) also require a pointer
-to png_info as the second argument. Some application visible macros
-defined in png.h designed for basic data access (reading and writing
-integers in the PNG format) don't take a png_info pointer, but it's almost
-always safe to assume that a (png_struct*) has to be passed to call an API
-function.
-
-You can have more than one png_info structure associated with an image,
-as illustrated in pngtest.c, one for information valid prior to the
-IDAT chunks and another (called "end_info" below) for things after them.
-
-The png.h header file is an invaluable reference for programming with libpng.
-And while I'm on the topic, make sure you include the libpng header file:
-
-#include <png.h>
-
-and also (as of libpng-1.5.0) the zlib header file, if you need it:
-
-#include <zlib.h>
-
-Types
-
-The png.h header file defines a number of integral types used by the
-APIs. Most of these are fairly obvious; for example types corresponding
-to integers of particular sizes and types for passing color values.
-
-One exception is how non-integral numbers are handled. For application
-convenience most APIs that take such numbers have C (double) arguments;
-however, internally PNG, and libpng, use 32 bit signed integers and encode
-the value by multiplying by 100,000. As of libpng 1.5.0 a convenience
-macro PNG_FP_1 is defined in png.h along with a type (png_fixed_point)
-which is simply (png_int_32).
-
-All APIs that take (double) arguments also have a matching API that
-takes the corresponding fixed point integer arguments. The fixed point
-API has the same name as the floating point one with "_fixed" appended.
-The actual range of values permitted in the APIs is frequently less than
-the full range of (png_fixed_point) (-21474 to +21474). When APIs require
-a non-negative argument the type is recorded as png_uint_32 above. Consult
-the header file and the text below for more information.
-
-Special care must be take with sCAL chunk handling because the chunk itself
-uses non-integral values encoded as strings containing decimal floating point
-numbers. See the comments in the header file.
-
-Configuration
-
-The main header file function declarations are frequently protected by C
-preprocessing directives of the form:
-
- #ifdef PNG_feature_SUPPORTED
- declare-function
- #endif
- ...
- #ifdef PNG_feature_SUPPORTED
- use-function
- #endif
-
-The library can be built without support for these APIs, although a
-standard build will have all implemented APIs. Application programs
-should check the feature macros before using an API for maximum
-portability. From libpng 1.5.0 the feature macros set during the build
-of libpng are recorded in the header file "pnglibconf.h" and this file
-is always included by png.h.
-
-If you don't need to change the library configuration from the default, skip to
-the next section ("Reading").
-
-Notice that some of the makefiles in the 'scripts' directory and (in 1.5.0) all
-of the build project files in the 'projects' directory simply copy
-scripts/pnglibconf.h.prebuilt to pnglibconf.h. This means that these build
-systems do not permit easy auto-configuration of the library - they only
-support the default configuration.
-
-The easiest way to make minor changes to the libpng configuration when
-auto-configuration is supported is to add definitions to the command line
-using (typically) CPPFLAGS. For example:
-
-CPPFLAGS=-DPNG_NO_FLOATING_ARITHMETIC
-
-will change the internal libpng math implementation for gamma correction and
-other arithmetic calculations to fixed point, avoiding the need for fast
-floating point support. The result can be seen in the generated pnglibconf.h -
-make sure it contains the changed feature macro setting.
-
-If you need to make more extensive configuration changes - more than one or two
-feature macro settings - you can either add -DPNG_USER_CONFIG to the build
-command line and put a list of feature macro settings in pngusr.h or you can set
-DFA_XTRA (a makefile variable) to a file containing the same information in the
-form of 'option' settings.
-
-A. Changing pnglibconf.h
-
-A variety of methods exist to build libpng. Not all of these support
-reconfiguration of pnglibconf.h. To reconfigure pnglibconf.h it must either be
-rebuilt from scripts/pnglibconf.dfa using awk or it must be edited by hand.
-
-Hand editing is achieved by copying scripts/pnglibconf.h.prebuilt to
-pnglibconf.h and changing the lines defining the supported features, paying
-very close attention to the 'option' information in scripts/pnglibconf.dfa
-that describes those features and their requirements. This is easy to get
-wrong.
-
-B. Configuration using DFA_XTRA
-
-Rebuilding from pnglibconf.dfa is easy if a functioning 'awk', or a later
-variant such as 'nawk' or 'gawk', is available. The configure build will
-automatically find an appropriate awk and build pnglibconf.h.
-The scripts/pnglibconf.mak file contains a set of make rules for doing the
-same thing if configure is not used, and many of the makefiles in the scripts
-directory use this approach.
-
-When rebuilding simply write a new file containing changed options and set
-DFA_XTRA to the name of this file. This causes the build to append the new file
-to the end of scripts/pnglibconf.dfa. The pngusr.dfa file should contain lines
-of the following forms:
-
-everything = off
-
-This turns all optional features off. Include it at the start of pngusr.dfa to
-make it easier to build a minimal configuration. You will need to turn at least
-some features on afterward to enable either reading or writing code, or both.
-
-option feature on
-option feature off
-
-Enable or disable a single feature. This will automatically enable other
-features required by a feature that is turned on or disable other features that
-require a feature which is turned off. Conflicting settings will cause an error
-message to be emitted by awk.
-
-setting feature default value
-
-Changes the default value of setting 'feature' to 'value'. There are a small
-number of settings listed at the top of pnglibconf.h, they are documented in the
-source code. Most of these values have performance implications for the library
-but most of them have no visible effect on the API. Some can also be overridden
-from the API.
-
-This method of building a customized pnglibconf.h is illustrated in
-contrib/pngminim/*. See the "$(PNGCONF):" target in the makefile and
-pngusr.dfa in these directories.
-
-C. Configuration using PNG_USR_CONFIG
-
-If -DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
-pngusr.h will automatically be included before the options in
-scripts/pnglibconf.dfa are processed. Your pngusr.h file should contain only
-macro definitions turning features on or off or setting settings.
-
-Apart from the global setting "everything = off" all the options listed above
-can be set using macros in pngusr.h:
-
-#define PNG_feature_SUPPORTED
-
-is equivalent to:
-
-option feature on
-
-#define PNG_NO_feature
-
-is equivalent to:
-
-option feature off
-
-#define PNG_feature value
-
-is equivalent to:
-
-setting feature default value
-
-Notice that in both cases, pngusr.dfa and pngusr.h, the contents of the
-pngusr file you supply override the contents of scripts/pnglibconf.dfa
-
-If confusing or incomprehensible behavior results it is possible to
-examine the intermediate file pnglibconf.dfn to find the full set of
-dependency information for each setting and option. Simply locate the
-feature in the file and read the C comments that precede it.
-
-This method is also illustrated in the contrib/pngminim/* makefiles and
-pngusr.h.
-
-III. Reading
-
-We'll now walk you through the possible functions to call when reading
-in a PNG file sequentially, briefly explaining the syntax and purpose
-of each one. See example.c and png.h for more detail. While
-progressive reading is covered in the next section, you will still
-need some of the functions discussed in this section to read a PNG
-file.
-
-Setup
-
-You will want to do the I/O initialization(*) before you get into libpng,
-so if it doesn't work, you don't have much to undo. Of course, you
-will also want to insure that you are, in fact, dealing with a PNG
-file. Libpng provides a simple check to see if a file is a PNG file.
-To use it, pass in the first 1 to 8 bytes of the file to the function
-png_sig_cmp(), and it will return 0 (false) if the bytes match the
-corresponding bytes of the PNG signature, or nonzero (true) otherwise.
-Of course, the more bytes you pass in, the greater the accuracy of the
-prediction.
-
-If you are intending to keep the file pointer open for use in libpng,
-you must ensure you don't read more than 8 bytes from the beginning
-of the file, and you also have to make a call to png_set_sig_bytes_read()
-with the number of bytes you read from the beginning. Libpng will
-then only check the bytes (if any) that your program didn't read.
-
-(*): If you are not using the standard I/O functions, you will need
-to replace them with custom functions. See the discussion under
-Customizing libpng.
-
-
- FILE *fp = fopen(file_name, "rb");
- if (!fp)
- {
- return (ERROR);
- }
-
- fread(header, 1, number, fp);
- is_png = !png_sig_cmp(header, 0, number);
-
- if (!is_png)
- {
- return (NOT_PNG);
- }
-
-
-Next, png_struct and png_info need to be allocated and initialized. In
-order to ensure that the size of these structures is correct even with a
-dynamically linked libpng, there are functions to initialize and
-allocate the structures. We also pass the library version, optional
-pointers to error handling functions, and a pointer to a data struct for
-use by the error functions, if necessary (the pointer and functions can
-be NULL if the default error handlers are to be used). See the section
-on Changes to Libpng below regarding the old initialization functions.
-The structure allocation functions quietly return NULL if they fail to
-create the structure, so your application should check for that.
-
- png_structp png_ptr = png_create_read_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
-
- if (!png_ptr)
- return (ERROR);
-
- png_infop info_ptr = png_create_info_struct(png_ptr);
-
- if (!info_ptr)
- {
- png_destroy_read_struct(&png_ptr,
- (png_infopp)NULL, (png_infopp)NULL);
- return (ERROR);
- }
-
-If you want to use your own memory allocation routines,
-use a libpng that was built with PNG_USER_MEM_SUPPORTED defined, and use
-png_create_read_struct_2() instead of png_create_read_struct():
-
- png_structp png_ptr = png_create_read_struct_2
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn, (png_voidp)
- user_mem_ptr, user_malloc_fn, user_free_fn);
-
-The error handling routines passed to png_create_read_struct()
-and the memory alloc/free routines passed to png_create_struct_2()
-are only necessary if you are not using the libpng supplied error
-handling and memory alloc/free functions.
-
-When libpng encounters an error, it expects to longjmp back
-to your routine. Therefore, you will need to call setjmp and pass
-your png_jmpbuf(png_ptr). If you read the file from different
-routines, you will need to update the longjmp buffer every time you enter
-a new routine that will call a png_*() function.
-
-See your documentation of setjmp/longjmp for your compiler for more
-information on setjmp/longjmp. See the discussion on libpng error
-handling in the Customizing Libpng section below for more information
-on the libpng error handling. If an error occurs, and libpng longjmp's
-back to your setjmp, you will want to call png_destroy_read_struct() to
-free any memory.
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- &end_info);
- fclose(fp);
- return (ERROR);
- }
-
-Pass (png_infopp)NULL instead of &end_info if you didn't create
-an end_info structure.
-
-If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
-errors will result in a call to PNG_ABORT() which defaults to abort().
-
-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
-Now you need to set up the input code. The default for libpng is to
-use the C function fread(). If you use this, you will need to pass a
-valid FILE * in the function png_init_io(). Be sure that the file is
-opened in binary mode. If you wish to handle reading data in another
-way, you need not call the png_init_io() function, but you must then
-implement the libpng I/O methods discussed in the Customizing Libpng
-section below.
-
- png_init_io(png_ptr, fp);
-
-If you had previously opened the file and read any of the signature from
-the beginning in order to see if this was a PNG file, you need to let
-libpng know that there are some bytes missing from the start of the file.
-
- png_set_sig_bytes(png_ptr, number);
-
-You can change the zlib compression buffer size to be used while
-reading compressed data with
-
- png_set_compression_buffer_size(png_ptr, buffer_size);
-
-where the default size is 8192 bytes. Note that the buffer size
-is changed immediately and the buffer is reallocated immediately,
-instead of setting a flag to be acted upon later.
-
-If you want CRC errors to be handled in a different manner than
-the default, use
-
- png_set_crc_action(png_ptr, crit_action, ancil_action);
-
-The values for png_set_crc_action() say how libpng is to handle CRC errors in
-ancillary and critical chunks, and whether to use the data contained
-therein. Note that it is impossible to "discard" data in a critical
-chunk.
-
-Choices for (int) crit_action are
- PNG_CRC_DEFAULT 0 error/quit
- PNG_CRC_ERROR_QUIT 1 error/quit
- PNG_CRC_WARN_USE 3 warn/use data
- PNG_CRC_QUIET_USE 4 quiet/use data
- PNG_CRC_NO_CHANGE 5 use the current value
-
-Choices for (int) ancil_action are
- PNG_CRC_DEFAULT 0 error/quit
- PNG_CRC_ERROR_QUIT 1 error/quit
- PNG_CRC_WARN_DISCARD 2 warn/discard data
- PNG_CRC_WARN_USE 3 warn/use data
- PNG_CRC_QUIET_USE 4 quiet/use data
- PNG_CRC_NO_CHANGE 5 use the current value
-
-Setting up callback code
-
-You can set up a callback function to handle any unknown chunks in the
-input stream. You must supply the function
-
- read_chunk_callback(png_structp png_ptr,
- png_unknown_chunkp chunk);
- {
- /* The unknown chunk structure contains your
- chunk data, along with similar data for any other
- unknown chunks: */
-
- png_byte name[5];
- png_byte *data;
- png_size_t size;
-
- /* Note that libpng has already taken care of
- the CRC handling */
-
- /* put your code here. Search for your chunk in the
- unknown chunk structure, process it, and return one
- of the following: */
-
- return (-n); /* chunk had an error */
- return (0); /* did not recognize */
- return (n); /* success */
- }
-
-(You can give your function another name that you like instead of
-"read_chunk_callback")
-
-To inform libpng about your function, use
-
- png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr,
- read_chunk_callback);
-
-This names not only the callback function, but also a user pointer that
-you can retrieve with
-
- png_get_user_chunk_ptr(png_ptr);
-
-If you call the png_set_read_user_chunk_fn() function, then all unknown
-chunks which the callback does not handle will be saved when read. You can
-cause them to be discarded by returning '1' ("handled") instead of '0'. This
-behavior will change in libpng 1.7 and the default handling set by the
-png_set_keep_unknown_chunks() function, described below, will be used when the
-callback returns 0. If you want the existing behavior you should set the global
-default to PNG_HANDLE_CHUNK_IF_SAFE now; this is compatible with all current
-versions of libpng and with 1.7. Libpng 1.6 issues a warning if you keep the
-default, or PNG_HANDLE_CHUNK_NEVER, and the callback returns 0.
-
-At this point, you can set up a callback function that will be
-called after each row has been read, which you can use to control
-a progress meter or the like. It's demonstrated in pngtest.c.
-You must supply a function
-
- void read_row_callback(png_structp png_ptr,
- png_uint_32 row, int pass);
- {
- /* put your code here */
- }
-
-(You can give it another name that you like instead of "read_row_callback")
-
-To inform libpng about your function, use
-
- png_set_read_status_fn(png_ptr, read_row_callback);
-
-When this function is called the row has already been completely processed and
-the 'row' and 'pass' refer to the next row to be handled. For the
-non-interlaced case the row that was just handled is simply one less than the
-passed in row number, and pass will always be 0. For the interlaced case the
-same applies unless the row value is 0, in which case the row just handled was
-the last one from one of the preceding passes. Because interlacing may skip a
-pass you cannot be sure that the preceding pass is just 'pass-1', if you really
-need to know what the last pass is record (row,pass) from the callback and use
-the last recorded value each time.
-
-As with the user transform you can find the output row using the
-PNG_ROW_FROM_PASS_ROW macro.
-
-Unknown-chunk handling
-
-Now you get to set the way the library processes unknown chunks in the
-input PNG stream. Both known and unknown chunks will be read. Normal
-behavior is that known chunks will be parsed into information in
-various info_ptr members while unknown chunks will be discarded. This
-behavior can be wasteful if your application will never use some known
-chunk types. To change this, you can call:
-
- png_set_keep_unknown_chunks(png_ptr, keep,
- chunk_list, num_chunks);
-
- keep - 0: default unknown chunk handling
- 1: ignore; do not keep
- 2: keep only if safe-to-copy
- 3: keep even if unsafe-to-copy
-
- You can use these definitions:
- PNG_HANDLE_CHUNK_AS_DEFAULT 0
- PNG_HANDLE_CHUNK_NEVER 1
- PNG_HANDLE_CHUNK_IF_SAFE 2
- PNG_HANDLE_CHUNK_ALWAYS 3
-
- chunk_list - list of chunks affected (a byte string,
- five bytes per chunk, NULL or '\0' if
- num_chunks is positive; ignored if
- numchunks <= 0).
-
- num_chunks - number of chunks affected; if 0, all
- unknown chunks are affected. If positive,
- only the chunks in the list are affected,
- and if negative all unknown chunks and
- all known chunks except for the IHDR,
- PLTE, tRNS, IDAT, and IEND chunks are
- affected.
-
-Unknown chunks declared in this way will be saved as raw data onto a
-list of png_unknown_chunk structures. If a chunk that is normally
-known to libpng is named in the list, it will be handled as unknown,
-according to the "keep" directive. If a chunk is named in successive
-instances of png_set_keep_unknown_chunks(), the final instance will
-take precedence. The IHDR and IEND chunks should not be named in
-chunk_list; if they are, libpng will process them normally anyway.
-If you know that your application will never make use of some particular
-chunks, use PNG_HANDLE_CHUNK_NEVER (or 1) as demonstrated below.
-
-Here is an example of the usage of png_set_keep_unknown_chunks(),
-where the private "vpAg" chunk will later be processed by a user chunk
-callback function:
-
- png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
-
- #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- png_byte unused_chunks[]=
- {
- 104, 73, 83, 84, (png_byte) '\0', /* hIST */
- 105, 84, 88, 116, (png_byte) '\0', /* iTXt */
- 112, 67, 65, 76, (png_byte) '\0', /* pCAL */
- 115, 67, 65, 76, (png_byte) '\0', /* sCAL */
- 115, 80, 76, 84, (png_byte) '\0', /* sPLT */
- 116, 73, 77, 69, (png_byte) '\0', /* tIME */
- };
- #endif
-
- ...
-
- #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- /* ignore all unknown chunks
- * (use global setting "2" for libpng16 and earlier):
- */
- png_set_keep_unknown_chunks(read_ptr, 2, NULL, 0);
-
- /* except for vpAg: */
- png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
-
- /* also ignore unused known chunks: */
- png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
- (int)(sizeof unused_chunks)/5);
- #endif
-
-User limits
-
-The PNG specification allows the width and height of an image to be as
-large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
-Since very few applications really need to process such large images,
-we have imposed an arbitrary 1-million limit on rows and columns.
-Larger images will be rejected immediately with a png_error() call. If
-you wish to change this limit, you can use
-
- png_set_user_limits(png_ptr, width_max, height_max);
-
-to set your own limits, or use width_max = height_max = 0x7fffffffL
-to allow all valid dimensions (libpng may reject some very large images
-anyway because of potential buffer overflow conditions).
-
-You should put this statement after you create the PNG structure and
-before calling png_read_info(), png_read_png(), or png_process_data().
-
-When writing a PNG datastream, put this statement before calling
-png_write_info() or png_write_png().
-
-If you need to retrieve the limits that are being applied, use
-
- width_max = png_get_user_width_max(png_ptr);
- height_max = png_get_user_height_max(png_ptr);
-
-The PNG specification sets no limit on the number of ancillary chunks
-allowed in a PNG datastream. You can impose a limit on the total number
-of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
-
- png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
-
-where 0x7fffffffL means unlimited. You can retrieve this limit with
-
- chunk_cache_max = png_get_chunk_cache_max(png_ptr);
-
-You can also set a limit on the amount of memory that a compressed chunk
-other than IDAT can occupy, with
-
- png_set_chunk_malloc_max(png_ptr, user_chunk_malloc_max);
-
-and you can retrieve the limit with
-
- chunk_malloc_max = png_get_chunk_malloc_max(png_ptr);
-
-Any chunks that would cause either of these limits to be exceeded will
-be ignored.
-
-Information about your system
-
-If you intend to display the PNG or to incorporate it in other image data you
-need to tell libpng information about your display or drawing surface so that
-libpng can convert the values in the image to match the display.
-
-From libpng-1.5.4 this information can be set before reading the PNG file
-header. In earlier versions png_set_gamma() existed but behaved incorrectly if
-called before the PNG file header had been read and png_set_alpha_mode() did not
-exist.
-
-If you need to support versions prior to libpng-1.5.4 test the version number
-as illustrated below using "PNG_LIBPNG_VER >= 10504" and follow the procedures
-described in the appropriate manual page.
-
-You give libpng the encoding expected by your system expressed as a 'gamma'
-value. You can also specify a default encoding for the PNG file in
-case the required information is missing from the file. By default libpng
-assumes that the PNG data matches your system, to keep this default call:
-
- png_set_gamma(png_ptr, screen_gamma, 1/screen_gamma/*file gamma*/);
-
-or you can use the fixed point equivalent:
-
- png_set_gamma_fixed(png_ptr, PNG_FP_1*screen_gamma,
- PNG_FP_1/screen_gamma);
-
-If you don't know the gamma for your system it is probably 2.2 - a good
-approximation to the IEC standard for display systems (sRGB). If images are
-too contrasty or washed out you got the value wrong - check your system
-documentation!
-
-Many systems permit the system gamma to be changed via a lookup table in the
-display driver, a few systems, including older Macs, change the response by
-default. As of 1.5.4 three special values are available to handle common
-situations:
-
- PNG_DEFAULT_sRGB: Indicates that the system conforms to the
- IEC 61966-2-1 standard. This matches almost
- all systems.
- PNG_GAMMA_MAC_18: Indicates that the system is an older
- (pre Mac OS 10.6) Apple Macintosh system with
- the default settings.
- PNG_GAMMA_LINEAR: Just the fixed point value for 1.0 - indicates
- that the system expects data with no gamma
- encoding.
-
-You would use the linear (unencoded) value if you need to process the pixel
-values further because this avoids the need to decode and reencode each
-component value whenever arithmetic is performed. A lot of graphics software
-uses linear values for this reason, often with higher precision component values
-to preserve overall accuracy.
-
-The second thing you may need to tell libpng about is how your system handles
-alpha channel information. Some, but not all, PNG files contain an alpha
-channel. To display these files correctly you need to compose the data onto a
-suitable background, as described in the PNG specification.
-
-Libpng only supports composing onto a single color (using png_set_background;
-see below). Otherwise you must do the composition yourself and, in this case,
-you may need to call png_set_alpha_mode:
-
- #if PNG_LIBPNG_VER >= 10504
- png_set_alpha_mode(png_ptr, mode, screen_gamma);
- #else
- png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
- #endif
-
-The screen_gamma value is the same as the argument to png_set_gamma; however,
-how it affects the output depends on the mode. png_set_alpha_mode() sets the
-file gamma default to 1/screen_gamma, so normally you don't need to call
-png_set_gamma. If you need different defaults call png_set_gamma() before
-png_set_alpha_mode() - if you call it after it will override the settings made
-by png_set_alpha_mode().
-
-The mode is as follows:
-
- PNG_ALPHA_PNG: The data is encoded according to the PNG specification. Red,
-green and blue, or gray, components are gamma encoded color
-values and are not premultiplied by the alpha value. The
-alpha value is a linear measure of the contribution of the
-pixel to the corresponding final output pixel.
-
-You should normally use this format if you intend to perform
-color correction on the color values; most, maybe all, color
-correction software has no handling for the alpha channel and,
-anyway, the math to handle pre-multiplied component values is
-unnecessarily complex.
-
-Before you do any arithmetic on the component values you need
-to remove the gamma encoding and multiply out the alpha
-channel. See the PNG specification for more detail. It is
-important to note that when an image with an alpha channel is
-scaled, linear encoded, pre-multiplied component values must
-be used!
-
-The remaining modes assume you don't need to do any further color correction or
-that if you do, your color correction software knows all about alpha (it
-probably doesn't!)
-
- PNG_ALPHA_STANDARD: The data libpng produces
-is encoded in the standard way
-assumed by most correctly written graphics software.
-The gamma encoding will be removed by libpng and the
-linear component values will be pre-multiplied by the
-alpha channel.
-
-With this format the final image must be re-encoded to
-match the display gamma before the image is displayed.
-If your system doesn't do that, yet still seems to
-perform arithmetic on the pixels without decoding them,
-it is broken - check out the modes below.
-
-With PNG_ALPHA_STANDARD libpng always produces linear
-component values, whatever screen_gamma you supply. The
-screen_gamma value is, however, used as a default for
-the file gamma if the PNG file has no gamma information.
-
-If you call png_set_gamma() after png_set_alpha_mode() you
-will override the linear encoding. Instead the
-pre-multiplied pixel values will be gamma encoded but
-the alpha channel will still be linear. This may
-actually match the requirements of some broken software,
-but it is unlikely.
-
-While linear 8-bit data is often used it has
-insufficient precision for any image with a reasonable
-dynamic range. To avoid problems, and if your software
-supports it, use png_set_expand_16() to force all
-components to 16 bits.
-
- PNG_ALPHA_OPTIMIZED: This mode is the same
-as PNG_ALPHA_STANDARD except that
-completely opaque pixels are gamma encoded according to
-the screen_gamma value. Pixels with alpha less than 1.0
-will still have linear components.
-
-Use this format if you have control over your
-compositing software and so don't do other arithmetic
-(such as scaling) on the data you get from libpng. Your
-compositing software can simply copy opaque pixels to
-the output but still has linear values for the
-non-opaque pixels.
-
-In normal compositing, where the alpha channel encodes
-partial pixel coverage (as opposed to broad area
-translucency), the inaccuracies of the 8-bit
-representation of non-opaque pixels are irrelevant.
-
-You can also try this format if your software is broken;
-it might look better.
-
- PNG_ALPHA_BROKEN: This is PNG_ALPHA_STANDARD;
-however, all component values,
-including the alpha channel are gamma encoded. This is
-an appropriate format to try if your software, or more
-likely hardware, is totally broken, i.e., if it performs
-linear arithmetic directly on gamma encoded values.
-
-In most cases of broken software or hardware the bug in the final display
-manifests as a subtle halo around composited parts of the image. You may not
-even perceive this as a halo; the composited part of the image may simply appear
-separate from the background, as though it had been cut out of paper and pasted
-on afterward.
-
-If you don't have to deal with bugs in software or hardware, or if you can fix
-them, there are three recommended ways of using png_set_alpha_mode():
-
- png_set_alpha_mode(png_ptr, PNG_ALPHA_PNG,
- screen_gamma);
-
-You can do color correction on the result (libpng does not currently
-support color correction internally). When you handle the alpha channel
-you need to undo the gamma encoding and multiply out the alpha.
-
- png_set_alpha_mode(png_ptr, PNG_ALPHA_STANDARD,
- screen_gamma);
- png_set_expand_16(png_ptr);
-
-If you are using the high level interface, don't call png_set_expand_16();
-instead pass PNG_TRANSFORM_EXPAND_16 to the interface.
-
-With this mode you can't do color correction, but you can do arithmetic,
-including composition and scaling, on the data without further processing.
-
- png_set_alpha_mode(png_ptr, PNG_ALPHA_OPTIMIZED,
- screen_gamma);
-
-You can avoid the expansion to 16-bit components with this mode, but you
-lose the ability to scale the image or perform other linear arithmetic.
-All you can do is compose the result onto a matching output. Since this
-mode is libpng-specific you also need to write your own composition
-software.
-
-If you don't need, or can't handle, the alpha channel you can call
-png_set_background() to remove it by compositing against a fixed color. Don't
-call png_set_strip_alpha() to do this - it will leave spurious pixel values in
-transparent parts of this image.
-
- png_set_background(png_ptr, &background_color,
- PNG_BACKGROUND_GAMMA_SCREEN, 0, 1);
-
-The background_color is an RGB or grayscale value according to the data format
-libpng will produce for you. Because you don't yet know the format of the PNG
-file, if you call png_set_background at this point you must arrange for the
-format produced by libpng to always have 8-bit or 16-bit components and then
-store the color as an 8-bit or 16-bit color as appropriate. The color contains
-separate gray and RGB component values, so you can let libpng produce gray or
-RGB output according to the input format, but low bit depth grayscale images
-must always be converted to at least 8-bit format. (Even though low bit depth
-grayscale images can't have an alpha channel they can have a transparent
-color!)
-
-You set the transforms you need later, either as flags to the high level
-interface or libpng API calls for the low level interface. For reference the
-settings and API calls required are:
-
-8-bit values:
- PNG_TRANSFORM_SCALE_16 | PNG_EXPAND
- png_set_expand(png_ptr); png_set_scale_16(png_ptr);
-
- If you must get exactly the same inaccurate results
- produced by default in versions prior to libpng-1.5.4,
- use PNG_TRANSFORM_STRIP_16 and png_set_strip_16(png_ptr)
- instead.
-
-16-bit values:
- PNG_TRANSFORM_EXPAND_16
- png_set_expand_16(png_ptr);
-
-In either case palette image data will be expanded to RGB. If you just want
-color data you can add PNG_TRANSFORM_GRAY_TO_RGB or png_set_gray_to_rgb(png_ptr)
-to the list.
-
-Calling png_set_background before the PNG file header is read will not work
-prior to libpng-1.5.4. Because the failure may result in unexpected warnings or
-errors it is therefore much safer to call png_set_background after the head has
-been read. Unfortunately this means that prior to libpng-1.5.4 it cannot be
-used with the high level interface.
-
-The high-level read interface
-
-At this point there are two ways to proceed; through the high-level
-read interface, or through a sequence of low-level read operations.
-You can use the high-level interface if (a) you are willing to read
-the entire image into memory, and (b) the input transformations
-you want to do are limited to the following set:
-
- PNG_TRANSFORM_IDENTITY No transformation
- PNG_TRANSFORM_SCALE_16 Strip 16-bit samples to
- 8-bit accurately
- PNG_TRANSFORM_STRIP_16 Chop 16-bit samples to
- 8-bit less accurately
- PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel
- PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit
- samples to bytes
- PNG_TRANSFORM_PACKSWAP Change order of packed
- pixels to LSB first
- PNG_TRANSFORM_EXPAND Perform set_expand()
- PNG_TRANSFORM_INVERT_MONO Invert monochrome images
- PNG_TRANSFORM_SHIFT Normalize pixels to the
- sBIT depth
- PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
- to BGRA
- PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
- to AG
- PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
- to transparency
- PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
- PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
- to RGB (or GA to RGBA)
- PNG_TRANSFORM_EXPAND_16 Expand samples to 16 bits
-
-(This excludes setting a background color, doing gamma transformation,
-quantizing, and setting filler.) If this is the case, simply do this:
-
- png_read_png(png_ptr, info_ptr, png_transforms, NULL)
-
-where png_transforms is an integer containing the bitwise OR of some
-set of transformation flags. This call is equivalent to png_read_info(),
-followed the set of transformations indicated by the transform mask,
-then png_read_image(), and finally png_read_end().
-
-(The final parameter of this call is not yet used. Someday it might point
-to transformation parameters required by some future input transform.)
-
-You must use png_transforms and not call any png_set_transform() functions
-when you use png_read_png().
-
-After you have called png_read_png(), you can retrieve the image data
-with
-
- row_pointers = png_get_rows(png_ptr, info_ptr);
-
-where row_pointers is an array of pointers to the pixel data for each row:
-
- png_bytep row_pointers[height];
-
-If you know your image size and pixel size ahead of time, you can allocate
-row_pointers prior to calling png_read_png() with
-
- if (height > PNG_UINT_32_MAX/(sizeof (png_byte)))
- png_error (png_ptr,
- "Image is too tall to process in memory");
-
- if (width > PNG_UINT_32_MAX/pixel_size)
- png_error (png_ptr,
- "Image is too wide to process in memory");
-
- row_pointers = png_malloc(png_ptr,
- height*(sizeof (png_bytep)));
-
- for (int i=0; i<height, i++)
- row_pointers[i]=NULL; /* security precaution */
-
- for (int i=0; i<height, i++)
- row_pointers[i]=png_malloc(png_ptr,
- width*pixel_size);
-
- png_set_rows(png_ptr, info_ptr, &row_pointers);
-
-Alternatively you could allocate your image in one big block and define
-row_pointers[i] to point into the proper places in your block.
-
-If you use png_set_rows(), the application is responsible for freeing
-row_pointers (and row_pointers[i], if they were separately allocated).
-
-If you don't allocate row_pointers ahead of time, png_read_png() will
-do it, and it'll be free'ed by libpng when you call png_destroy_*().
-
-The low-level read interface
-
-If you are going the low-level route, you are now ready to read all
-the file information up to the actual image data. You do this with a
-call to png_read_info().
-
- png_read_info(png_ptr, info_ptr);
-
-This will process all chunks up to but not including the image data.
-
-This also copies some of the data from the PNG file into the decode structure
-for use in later transformations. Important information copied in is:
-
-1) The PNG file gamma from the gAMA chunk. This overwrites the default value
-provided by an earlier call to png_set_gamma or png_set_alpha_mode.
-
-2) Prior to libpng-1.5.4 the background color from a bKGd chunk. This
-damages the information provided by an earlier call to png_set_background
-resulting in unexpected behavior. Libpng-1.5.4 no longer does this.
-
-3) The number of significant bits in each component value. Libpng uses this to
-optimize gamma handling by reducing the internal lookup table sizes.
-
-4) The transparent color information from a tRNS chunk. This can be modified by
-a later call to png_set_tRNS.
-
-Querying the info structure
-
-Functions are used to get the information from the info_ptr once it
-has been read. Note that these fields may not be completely filled
-in until png_read_end() has read the chunk data following the image.
-
- png_get_IHDR(png_ptr, info_ptr, &width, &height,
- &bit_depth, &color_type, &interlace_type,
- &compression_type, &filter_method);
-
- width - holds the width of the image
- in pixels (up to 2^31).
-
- height - holds the height of the image
- in pixels (up to 2^31).
-
- bit_depth - holds the bit depth of one of the
- image channels. (valid values are
- 1, 2, 4, 8, 16 and depend also on
- the color_type. See also
- significant bits (sBIT) below).
-
- color_type - describes which color/alpha channels
- are present.
- PNG_COLOR_TYPE_GRAY
- (bit depths 1, 2, 4, 8, 16)
- PNG_COLOR_TYPE_GRAY_ALPHA
- (bit depths 8, 16)
- PNG_COLOR_TYPE_PALETTE
- (bit depths 1, 2, 4, 8)
- PNG_COLOR_TYPE_RGB
- (bit_depths 8, 16)
- PNG_COLOR_TYPE_RGB_ALPHA
- (bit_depths 8, 16)
-
- PNG_COLOR_MASK_PALETTE
- PNG_COLOR_MASK_COLOR
- PNG_COLOR_MASK_ALPHA
-
- interlace_type - (PNG_INTERLACE_NONE or
- PNG_INTERLACE_ADAM7)
-
- compression_type - (must be PNG_COMPRESSION_TYPE_BASE
- for PNG 1.0)
-
- filter_method - (must be PNG_FILTER_TYPE_BASE
- for PNG 1.0, and can also be
- PNG_INTRAPIXEL_DIFFERENCING if
- the PNG datastream is embedded in
- a MNG-1.0 datastream)
-
- Any or all of interlace_type, compression_type, or
- filter_method can be NULL if you are
- not interested in their values.
-
- Note that png_get_IHDR() returns 32-bit data into
- the application's width and height variables.
- This is an unsafe situation if these are 16-bit
- variables. In such situations, the
- png_get_image_width() and png_get_image_height()
- functions described below are safer.
-
- width = png_get_image_width(png_ptr,
- info_ptr);
-
- height = png_get_image_height(png_ptr,
- info_ptr);
-
- bit_depth = png_get_bit_depth(png_ptr,
- info_ptr);
-
- color_type = png_get_color_type(png_ptr,
- info_ptr);
-
- interlace_type = png_get_interlace_type(png_ptr,
- info_ptr);
-
- compression_type = png_get_compression_type(png_ptr,
- info_ptr);
-
- filter_method = png_get_filter_type(png_ptr,
- info_ptr);
-
- channels = png_get_channels(png_ptr, info_ptr);
-
- channels - number of channels of info for the
- color type (valid values are 1 (GRAY,
- PALETTE), 2 (GRAY_ALPHA), 3 (RGB),
- 4 (RGB_ALPHA or RGB + filler byte))
-
- rowbytes = png_get_rowbytes(png_ptr, info_ptr);
-
- rowbytes - number of bytes needed to hold a row
-
- signature = png_get_signature(png_ptr, info_ptr);
-
- signature - holds the signature read from the
- file (if any). The data is kept in
- the same offset it would be if the
- whole signature were read (i.e. if an
- application had already read in 4
- bytes of signature before starting
- libpng, the remaining 4 bytes would
- be in signature[4] through signature[7]
- (see png_set_sig_bytes())).
-
-These are also important, but their validity depends on whether the chunk
-has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
-png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
-data has been read, or zero if it is missing. The parameters to the
-png_get_<chunk> are set directly if they are simple data types, or a
-pointer into the info_ptr is returned for any complex types.
-
-The colorspace data from gAMA, cHRM, sRGB, iCCP, and sBIT chunks
-is simply returned to give the application information about how the
-image was encoded. Libpng itself only does transformations using the file
-gamma when combining semitransparent pixels with the background color, and,
-since libpng-1.6.0, when converting between 8-bit sRGB and 16-bit linear pixels
-within the simplified API. Libpng also uses the file gamma when converting
-RGB to gray, beginning with libpng-1.0.5, if the application calls
-png_set_rgb_to_gray()).
-
- png_get_PLTE(png_ptr, info_ptr, &palette,
- &num_palette);
-
- palette - the palette for the file
- (array of png_color)
-
- num_palette - number of entries in the palette
-
- png_get_gAMA(png_ptr, info_ptr, &file_gamma);
- png_get_gAMA_fixed(png_ptr, info_ptr, &int_file_gamma);
-
- file_gamma - the gamma at which the file is
- written (PNG_INFO_gAMA)
-
- int_file_gamma - 100,000 times the gamma at which the
- file is written
-
- png_get_cHRM(png_ptr, info_ptr, &white_x, &white_y, &red_x,
- &red_y, &green_x, &green_y, &blue_x, &blue_y)
- png_get_cHRM_XYZ(png_ptr, info_ptr, &red_X, &red_Y, &red_Z,
- &green_X, &green_Y, &green_Z, &blue_X, &blue_Y,
- &blue_Z)
- png_get_cHRM_fixed(png_ptr, info_ptr, &int_white_x,
- &int_white_y, &int_red_x, &int_red_y,
- &int_green_x, &int_green_y, &int_blue_x,
- &int_blue_y)
- png_get_cHRM_XYZ_fixed(png_ptr, info_ptr, &int_red_X, &int_red_Y,
- &int_red_Z, &int_green_X, &int_green_Y,
- &int_green_Z, &int_blue_X, &int_blue_Y,
- &int_blue_Z)
-
- {white,red,green,blue}_{x,y}
- A color space encoding specified using the
- chromaticities of the end points and the
- white point. (PNG_INFO_cHRM)
-
- {red,green,blue}_{X,Y,Z}
- A color space encoding specified using the
- encoding end points - the CIE tristimulus
- specification of the intended color of the red,
- green and blue channels in the PNG RGB data.
- The white point is simply the sum of the three
- end points. (PNG_INFO_cHRM)
-
- png_get_sRGB(png_ptr, info_ptr, &srgb_intent);
-
- file_srgb_intent - the rendering intent (PNG_INFO_sRGB)
- The presence of the sRGB chunk
- means that the pixel data is in the
- sRGB color space. This chunk also
- implies specific values of gAMA and
- cHRM.
-
- png_get_iCCP(png_ptr, info_ptr, &name,
- &compression_type, &profile, &proflen);
-
- name - The profile name.
-
- compression_type - The compression type; always
- PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
- You may give NULL to this argument to
- ignore it.
-
- profile - International Color Consortium color
- profile data. May contain NULs.
-
- proflen - length of profile data in bytes.
-
- png_get_sBIT(png_ptr, info_ptr, &sig_bit);
-
- sig_bit - the number of significant bits for
- (PNG_INFO_sBIT) each of the gray,
- red, green, and blue channels,
- whichever are appropriate for the
- given color type (png_color_16)
-
- png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
- &num_trans, &trans_color);
-
- trans_alpha - array of alpha (transparency)
- entries for palette (PNG_INFO_tRNS)
-
- num_trans - number of transparent entries
- (PNG_INFO_tRNS)
-
- trans_color - graylevel or color sample values of
- the single transparent color for
- non-paletted images (PNG_INFO_tRNS)
-
- png_get_hIST(png_ptr, info_ptr, &hist);
- (PNG_INFO_hIST)
-
- hist - histogram of palette (array of
- png_uint_16)
-
- png_get_tIME(png_ptr, info_ptr, &mod_time);
-
- mod_time - time image was last modified
- (PNG_VALID_tIME)
-
- png_get_bKGD(png_ptr, info_ptr, &background);
-
- background - background color (of type
- png_color_16p) (PNG_VALID_bKGD)
- valid 16-bit red, green and blue
- values, regardless of color_type
-
- num_comments = png_get_text(png_ptr, info_ptr,
- &text_ptr, &num_text);
-
- num_comments - number of comments
-
- text_ptr - array of png_text holding image
- comments
-
- text_ptr[i].compression - type of compression used
- on "text" PNG_TEXT_COMPRESSION_NONE
- PNG_TEXT_COMPRESSION_zTXt
- PNG_ITXT_COMPRESSION_NONE
- PNG_ITXT_COMPRESSION_zTXt
-
- text_ptr[i].key - keyword for comment. Must contain
- 1-79 characters.
-
- text_ptr[i].text - text comments for current
- keyword. Can be empty.
-
- text_ptr[i].text_length - length of text string,
- after decompression, 0 for iTXt
-
- text_ptr[i].itxt_length - length of itxt string,
- after decompression, 0 for tEXt/zTXt
-
- text_ptr[i].lang - language of comment (empty
- string for unknown).
-
- text_ptr[i].lang_key - keyword in UTF-8
- (empty string for unknown).
-
- Note that the itxt_length, lang, and lang_key
- members of the text_ptr structure only exist when the
- library is built with iTXt chunk support. Prior to
- libpng-1.4.0 the library was built by default without
- iTXt support. Also note that when iTXt is supported,
- they contain NULL pointers when the "compression"
- field contains PNG_TEXT_COMPRESSION_NONE or
- PNG_TEXT_COMPRESSION_zTXt.
-
- num_text - number of comments (same as
- num_comments; you can put NULL here
- to avoid the duplication)
-
- Note while png_set_text() will accept text, language,
- and translated keywords that can be NULL pointers, the
- structure returned by png_get_text will always contain
- regular zero-terminated C strings. They might be
- empty strings but they will never be NULL pointers.
-
- num_spalettes = png_get_sPLT(png_ptr, info_ptr,
- &palette_ptr);
-
- num_spalettes - number of sPLT chunks read.
-
- palette_ptr - array of palette structures holding
- contents of one or more sPLT chunks
- read.
-
- png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y,
- &unit_type);
-
- offset_x - positive offset from the left edge
- of the screen (can be negative)
-
- offset_y - positive offset from the top edge
- of the screen (can be negative)
-
- unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
-
- png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y,
- &unit_type);
-
- res_x - pixels/unit physical resolution in
- x direction
-
- res_y - pixels/unit physical resolution in
- x direction
-
- unit_type - PNG_RESOLUTION_UNKNOWN,
- PNG_RESOLUTION_METER
-
- png_get_sCAL(png_ptr, info_ptr, &unit, &width,
- &height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
-
- height - height of a pixel in physical scale units
- (width and height are doubles)
-
- png_get_sCAL_s(png_ptr, info_ptr, &unit, &width,
- &height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
- (expressed as a string)
-
- height - height of a pixel in physical scale units
- (width and height are strings like "2.54")
-
- num_unknown_chunks = png_get_unknown_chunks(png_ptr,
- info_ptr, &unknowns)
-
- unknowns - array of png_unknown_chunk
- structures holding unknown chunks
-
- unknowns[i].name - name of unknown chunk
-
- unknowns[i].data - data of unknown chunk
-
- unknowns[i].size - size of unknown chunk's data
-
- unknowns[i].location - position of chunk in file
-
- The value of "i" corresponds to the order in which the
- chunks were read from the PNG file or inserted with the
- png_set_unknown_chunks() function.
-
- The value of "location" is a bitwise "or" of
-
- PNG_HAVE_IHDR (0x01)
- PNG_HAVE_PLTE (0x02)
- PNG_AFTER_IDAT (0x08)
-
-The data from the pHYs chunk can be retrieved in several convenient
-forms:
-
- res_x = png_get_x_pixels_per_meter(png_ptr,
- info_ptr)
-
- res_y = png_get_y_pixels_per_meter(png_ptr,
- info_ptr)
-
- res_x_and_y = png_get_pixels_per_meter(png_ptr,
- info_ptr)
-
- res_x = png_get_x_pixels_per_inch(png_ptr,
- info_ptr)
-
- res_y = png_get_y_pixels_per_inch(png_ptr,
- info_ptr)
-
- res_x_and_y = png_get_pixels_per_inch(png_ptr,
- info_ptr)
-
- aspect_ratio = png_get_pixel_aspect_ratio(png_ptr,
- info_ptr)
-
- Each of these returns 0 [signifying "unknown"] if
- the data is not present or if res_x is 0;
- res_x_and_y is 0 if res_x != res_y
-
- Note that because of the way the resolutions are
- stored internally, the inch conversions won't
- come out to exactly even number. For example,
- 72 dpi is stored as 0.28346 pixels/meter, and
- when this is retrieved it is 71.9988 dpi, so
- be sure to round the returned value appropriately
- if you want to display a reasonable-looking result.
-
-The data from the oFFs chunk can be retrieved in several convenient
-forms:
-
- x_offset = png_get_x_offset_microns(png_ptr, info_ptr);
-
- y_offset = png_get_y_offset_microns(png_ptr, info_ptr);
-
- x_offset = png_get_x_offset_inches(png_ptr, info_ptr);
-
- y_offset = png_get_y_offset_inches(png_ptr, info_ptr);
-
- Each of these returns 0 [signifying "unknown" if both
- x and y are 0] if the data is not present or if the
- chunk is present but the unit is the pixel. The
- remark about inexact inch conversions applies here
- as well, because a value in inches can't always be
- converted to microns and back without some loss
- of precision.
-
-For more information, see the
-PNG specification for chunk contents. Be careful with trusting
-rowbytes, as some of the transformations could increase the space
-needed to hold a row (expand, filler, gray_to_rgb, etc.).
-See png_read_update_info(), below.
-
-A quick word about text_ptr and num_text. PNG stores comments in
-keyword/text pairs, one pair per chunk, with no limit on the number
-of text chunks, and a 2^31 byte limit on their size. While there are
-suggested keywords, there is no requirement to restrict the use to these
-strings. It is strongly suggested that keywords and text be sensible
-to humans (that's the point), so don't use abbreviations. Non-printing
-symbols are not allowed. See the PNG specification for more details.
-There is also no requirement to have text after the keyword.
-
-Keywords should be limited to 79 Latin-1 characters without leading or
-trailing spaces, but non-consecutive spaces are allowed within the
-keyword. It is possible to have the same keyword any number of times.
-The text_ptr is an array of png_text structures, each holding a
-pointer to a language string, a pointer to a keyword and a pointer to
-a text string. The text string, language code, and translated
-keyword may be empty or NULL pointers. The keyword/text
-pairs are put into the array in the order that they are received.
-However, some or all of the text chunks may be after the image, so, to
-make sure you have read all the text chunks, don't mess with these
-until after you read the stuff after the image. This will be
-mentioned again below in the discussion that goes with png_read_end().
-
-Input transformations
-
-After you've read the header information, you can set up the library
-to handle any special transformations of the image data. The various
-ways to transform the data will be described in the order that they
-should occur. This is important, as some of these change the color
-type and/or bit depth of the data, and some others only work on
-certain color types and bit depths.
-
-Transformations you request are ignored if they don't have any meaning for a
-particular input data format. However some transformations can have an effect
-as a result of a previous transformation. If you specify a contradictory set of
-transformations, for example both adding and removing the alpha channel, you
-cannot predict the final result.
-
-The color used for the transparency values should be supplied in the same
-format/depth as the current image data. It is stored in the same format/depth
-as the image data in a tRNS chunk, so this is what libpng expects for this data.
-
-The color used for the background value depends on the need_expand argument as
-described below.
-
-Data will be decoded into the supplied row buffers packed into bytes
-unless the library has been told to transform it into another format.
-For example, 4 bit/pixel paletted or grayscale data will be returned
-2 pixels/byte with the leftmost pixel in the high-order bits of the
-byte, unless png_set_packing() is called. 8-bit RGB data will be stored
-in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
-is called to insert filler bytes, either before or after each RGB triplet.
-16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
-byte of the color value first, unless png_set_scale_16() is called to
-transform it to regular RGB RGB triplets, or png_set_filler() or
-png_set_add alpha() is called to insert filler bytes, either before or
-after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can
-be modified with png_set_filler(), png_set_add_alpha(), png_set_strip_16(),
-or png_set_scale_16().
-
-The following code transforms grayscale images of less than 8 to 8 bits,
-changes paletted images to RGB, and adds a full alpha channel if there is
-transparency information in a tRNS chunk. This is most useful on
-grayscale images with bit depths of 2 or 4 or if there is a multiple-image
-viewing application that wishes to treat all images in the same way.
-
- if (color_type == PNG_COLOR_TYPE_PALETTE)
- png_set_palette_to_rgb(png_ptr);
-
- if (png_get_valid(png_ptr, info_ptr,
- PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
-
- if (color_type == PNG_COLOR_TYPE_GRAY &&
- bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
-
-The first two functions are actually aliases for png_set_expand(), added
-in libpng version 1.0.4, with the function names expanded to improve code
-readability. In some future version they may actually do different
-things.
-
-As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
-added. It expands the sample depth without changing tRNS to alpha.
-
-As of libpng version 1.5.2, png_set_expand_16() was added. It behaves as
-png_set_expand(); however, the resultant channels have 16 bits rather than 8.
-Use this when the output color or gray channels are made linear to avoid fairly
-severe accuracy loss.
-
- if (bit_depth < 16)
- png_set_expand_16(png_ptr);
-
-PNG can have files with 16 bits per channel. If you only can handle
-8 bits per channel, this will strip the pixels down to 8-bit.
-
- if (bit_depth == 16)
-#if PNG_LIBPNG_VER >= 10504
- png_set_scale_16(png_ptr);
-#else
- png_set_strip_16(png_ptr);
-#endif
-
-(The more accurate "png_set_scale_16()" API became available in libpng version
-1.5.4).
-
-If you need to process the alpha channel on the image separately from the image
-data (for example if you convert it to a bitmap mask) it is possible to have
-libpng strip the channel leaving just RGB or gray data:
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- png_set_strip_alpha(png_ptr);
-
-If you strip the alpha channel you need to find some other way of dealing with
-the information. If, instead, you want to convert the image to an opaque
-version with no alpha channel use png_set_background; see below.
-
-As of libpng version 1.5.2, almost all useful expansions are supported, the
-major ommissions are conversion of grayscale to indexed images (which can be
-done trivially in the application) and conversion of indexed to grayscale (which
-can be done by a trivial manipulation of the palette.)
-
-In the following table, the 01 means grayscale with depth<8, 31 means
-indexed with depth<8, other numerals represent the color type, "T" means
-the tRNS chunk is present, A means an alpha channel is present, and O
-means tRNS or alpha is present but all pixels in the image are opaque.
-
- FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
- TO
- 01 - [G] - - - - - - - - - - - - -
- 31 [Q] Q [Q] [Q] [Q] Q Q Q Q Q Q [Q] [Q] Q Q
- 0 1 G + . . G G G G G G B B GB GB
- 0T lt Gt t + . Gt G G Gt G G Bt Bt GBt GBt
- 0O lt Gt t . + Gt Gt G Gt Gt G Bt Bt GBt GBt
- 2 C P C C C + . . C - - CB CB B B
- 2T Ct - Ct C C t + t - - - CBt CBt Bt Bt
- 2O Ct - Ct C C t t + - - - CBt CBt Bt Bt
- 3 [Q] p [Q] [Q] [Q] Q Q Q + . . [Q] [Q] Q Q
- 3T [Qt] p [Qt][Q] [Q] Qt Qt Qt t + t [Qt][Qt] Qt Qt
- 3O [Qt] p [Qt][Q] [Q] Qt Qt Qt t t + [Qt][Qt] Qt Qt
- 4A lA G A T T GA GT GT GA GT GT + BA G GBA
- 4O lA GBA A T T GA GT GT GA GT GT BA + GBA G
- 6A CA PA CA C C A T tT PA P P C CBA + BA
- 6O CA PBA CA C C A tT T PA P P CBA C BA +
-
-Within the matrix,
- "+" identifies entries where 'from' and 'to' are the same.
- "-" means the transformation is not supported.
- "." means nothing is necessary (a tRNS chunk can just be ignored).
- "t" means the transformation is obtained by png_set_tRNS.
- "A" means the transformation is obtained by png_set_add_alpha().
- "X" means the transformation is obtained by png_set_expand().
- "1" means the transformation is obtained by
- png_set_expand_gray_1_2_4_to_8() (and by png_set_expand()
- if there is no transparency in the original or the final
- format).
- "C" means the transformation is obtained by png_set_gray_to_rgb().
- "G" means the transformation is obtained by png_set_rgb_to_gray().
- "P" means the transformation is obtained by
- png_set_expand_palette_to_rgb().
- "p" means the transformation is obtained by png_set_packing().
- "Q" means the transformation is obtained by png_set_quantize().
- "T" means the transformation is obtained by
- png_set_tRNS_to_alpha().
- "B" means the transformation is obtained by
- png_set_background(), or png_strip_alpha().
-
-When an entry has multiple transforms listed all are required to cause the
-right overall transformation. When two transforms are separated by a comma
-either will do the job. When transforms are enclosed in [] the transform should
-do the job but this is currently unimplemented - a different format will result
-if the suggested transformations are used.
-
-In PNG files, the alpha channel in an image
-is the level of opacity. If you need the alpha channel in an image to
-be the level of transparency instead of opacity, you can invert the
-alpha channel (or the tRNS chunk data) after it's read, so that 0 is
-fully opaque and 255 (in 8-bit or paletted images) or 65535 (in 16-bit
-images) is fully transparent, with
-
- png_set_invert_alpha(png_ptr);
-
-PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
-they can, resulting in, for example, 8 pixels per byte for 1 bit
-files. This code expands to 1 pixel per byte without changing the
-values of the pixels:
-
- if (bit_depth < 8)
- png_set_packing(png_ptr);
-
-PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
-stored in a PNG image have been "scaled" or "shifted" up to the next
-higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
-to 8 bits/sample in the range [0, 255]). However, it is also possible
-to convert the PNG pixel data back to the original bit depth of the
-image. This call reduces the pixels back down to the original bit depth:
-
- png_color_8p sig_bit;
-
- if (png_get_sBIT(png_ptr, info_ptr, &sig_bit))
- png_set_shift(png_ptr, sig_bit);
-
-PNG files store 3-color pixels in red, green, blue order. This code
-changes the storage of the pixels to blue, green, red:
-
- if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_bgr(png_ptr);
-
-PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
-into 4 or 8 bytes for windowing systems that need them in this format:
-
- if (color_type == PNG_COLOR_TYPE_RGB)
- png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
-
-where "filler" is the 8 or 16-bit number to fill with, and the location is
-either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
-you want the filler before the RGB or after. This transformation
-does not affect images that already have full alpha channels. To add an
-opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
-will generate RGBA pixels.
-
-Note that png_set_filler() does not change the color type. If you want
-to do that, you can add a true alpha channel with
-
- if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_GRAY)
- png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
-
-where "filler" contains the alpha value to assign to each pixel.
-This function was added in libpng-1.2.7.
-
-If you are reading an image with an alpha channel, and you need the
-data as ARGB instead of the normal PNG format RGBA:
-
- if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_swap_alpha(png_ptr);
-
-For some uses, you may want a grayscale image to be represented as
-RGB. This code will do that conversion:
-
- if (color_type == PNG_COLOR_TYPE_GRAY ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- png_set_gray_to_rgb(png_ptr);
-
-Conversely, you can convert an RGB or RGBA image to grayscale or grayscale
-with alpha.
-
- if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_rgb_to_gray(png_ptr, error_action,
- double red_weight, double green_weight);
-
- error_action = 1: silently do the conversion
-
- error_action = 2: issue a warning if the original
- image has any pixel where
- red != green or red != blue
-
- error_action = 3: issue an error and abort the
- conversion if the original
- image has any pixel where
- red != green or red != blue
-
- red_weight: weight of red component
-
- green_weight: weight of green component
- If either weight is negative, default
- weights are used.
-
-In the corresponding fixed point API the red_weight and green_weight values are
-simply scaled by 100,000:
-
- png_set_rgb_to_gray(png_ptr, error_action,
- png_fixed_point red_weight,
- png_fixed_point green_weight);
-
-If you have set error_action = 1 or 2, you can
-later check whether the image really was gray, after processing
-the image rows, with the png_get_rgb_to_gray_status(png_ptr) function.
-It will return a png_byte that is zero if the image was gray or
-1 if there were any non-gray pixels. Background and sBIT data
-will be silently converted to grayscale, using the green channel
-data for sBIT, regardless of the error_action setting.
-
-The default values come from the PNG file cHRM chunk if present; otherwise, the
-defaults correspond to the ITU-R recommendation 709, and also the sRGB color
-space, as recommended in the Charles Poynton's Colour FAQ,
-<http://www.poynton.com/>, in section 9:
-
- <http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC9>
-
- Y = 0.2126 * R + 0.7152 * G + 0.0722 * B
-
-Previous versions of this document, 1998 through 2002, recommended a slightly
-different formula:
-
- Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
-
-Libpng uses an integer approximation:
-
- Y = (6968 * R + 23434 * G + 2366 * B)/32768
-
-The calculation is done in a linear colorspace, if the image gamma
-can be determined.
-
-The png_set_background() function has been described already; it tells libpng to
-composite images with alpha or simple transparency against the supplied
-background color. For compatibility with versions of libpng earlier than
-libpng-1.5.4 it is recommended that you call the function after reading the file
-header, even if you don't want to use the color in a bKGD chunk, if one exists.
-
-If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
-you may use this color, or supply another color more suitable for
-the current display (e.g., the background color from a web page). You
-need to tell libpng how the color is represented, both the format of the
-component values in the color (the number of bits) and the gamma encoding of the
-color. The function takes two arguments, background_gamma_mode and need_expand
-to convey this information; however, only two combinations are likely to be
-useful:
-
- png_color_16 my_background;
- png_color_16p image_background;
-
- if (png_get_bKGD(png_ptr, info_ptr, &image_background))
- png_set_background(png_ptr, image_background,
- PNG_BACKGROUND_GAMMA_FILE, 1/*needs to be expanded*/, 1);
- else
- png_set_background(png_ptr, &my_background,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*do not expand*/, 1);
-
-The second call was described above - my_background is in the format of the
-final, display, output produced by libpng. Because you now know the format of
-the PNG it is possible to avoid the need to choose either 8-bit or 16-bit
-output and to retain palette images (the palette colors will be modified
-appropriately and the tRNS chunk removed.) However, if you are doing this,
-take great care not to ask for transformations without checking first that
-they apply!
-
-In the first call the background color has the original bit depth and color type
-of the PNG file. So, for palette images the color is supplied as a palette
-index and for low bit greyscale images the color is a reduced bit value in
-image_background->gray.
-
-If you didn't call png_set_gamma() before reading the file header, for example
-if you need your code to remain compatible with older versions of libpng prior
-to libpng-1.5.4, this is the place to call it.
-
-Do not call it if you called png_set_alpha_mode(); doing so will damage the
-settings put in place by png_set_alpha_mode(). (If png_set_alpha_mode() is
-supported then you can certainly do png_set_gamma() before reading the PNG
-header.)
-
-This API unconditionally sets the screen and file gamma values, so it will
-override the value in the PNG file unless it is called before the PNG file
-reading starts. For this reason you must always call it with the PNG file
-value when you call it in this position:
-
- if (png_get_gAMA(png_ptr, info_ptr, &file_gamma))
- png_set_gamma(png_ptr, screen_gamma, file_gamma);
-
- else
- png_set_gamma(png_ptr, screen_gamma, 0.45455);
-
-If you need to reduce an RGB file to a paletted file, or if a paletted
-file has more entries then will fit on your screen, png_set_quantize()
-will do that. Note that this is a simple match quantization that merely
-finds the closest color available. This should work fairly well with
-optimized palettes, but fairly badly with linear color cubes. If you
-pass a palette that is larger than maximum_colors, the file will
-reduce the number of colors in the palette so it will fit into
-maximum_colors. If there is a histogram, libpng will use it to make
-more intelligent choices when reducing the palette. If there is no
-histogram, it may not do as good a job.
-
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- if (png_get_valid(png_ptr, info_ptr,
- PNG_INFO_PLTE))
- {
- png_uint_16p histogram = NULL;
-
- png_get_hIST(png_ptr, info_ptr,
- &histogram);
- png_set_quantize(png_ptr, palette, num_palette,
- max_screen_colors, histogram, 1);
- }
-
- else
- {
- png_color std_color_cube[MAX_SCREEN_COLORS] =
- { ... colors ... };
-
- png_set_quantize(png_ptr, std_color_cube,
- MAX_SCREEN_COLORS, MAX_SCREEN_COLORS,
- NULL,0);
- }
- }
-
-PNG files describe monochrome as black being zero and white being one.
-The following code will reverse this (make black be one and white be
-zero):
-
- if (bit_depth == 1 && color_type == PNG_COLOR_TYPE_GRAY)
- png_set_invert_mono(png_ptr);
-
-This function can also be used to invert grayscale and gray-alpha images:
-
- if (color_type == PNG_COLOR_TYPE_GRAY ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- png_set_invert_mono(png_ptr);
-
-PNG files store 16-bit pixels in network byte order (big-endian,
-ie. most significant bits first). This code changes the storage to the
-other way (little-endian, i.e. least significant bits first, the
-way PCs store them):
-
- if (bit_depth == 16)
- png_set_swap(png_ptr);
-
-If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
-need to change the order the pixels are packed into bytes, you can use:
-
- if (bit_depth < 8)
- png_set_packswap(png_ptr);
-
-Finally, you can write your own transformation function if none of
-the existing ones meets your needs. This is done by setting a callback
-with
-
- png_set_read_user_transform_fn(png_ptr,
- read_transform_fn);
-
-You must supply the function
-
- void read_transform_fn(png_structp png_ptr, png_row_infop
- row_info, png_bytep data)
-
-See pngtest.c for a working example. Your function will be called
-after all of the other transformations have been processed. Take care with
-interlaced images if you do the interlace yourself - the width of the row is the
-width in 'row_info', not the overall image width.
-
-If supported, libpng provides two information routines that you can use to find
-where you are in processing the image:
-
- png_get_current_pass_number(png_structp png_ptr);
- png_get_current_row_number(png_structp png_ptr);
-
-Don't try using these outside a transform callback - firstly they are only
-supported if user transforms are supported, secondly they may well return
-unexpected results unless the row is actually being processed at the moment they
-are called.
-
-With interlaced
-images the value returned is the row in the input sub-image image. Use
-PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
-find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
-
-The discussion of interlace handling above contains more information on how to
-use these values.
-
-You can also set up a pointer to a user structure for use by your
-callback function, and you can inform libpng that your transform
-function will change the number of channels or bit depth with the
-function
-
- png_set_user_transform_info(png_ptr, user_ptr,
- user_depth, user_channels);
-
-The user's application, not libpng, is responsible for allocating and
-freeing any memory required for the user structure.
-
-You can retrieve the pointer via the function
-png_get_user_transform_ptr(). For example:
-
- voidp read_user_transform_ptr =
- png_get_user_transform_ptr(png_ptr);
-
-The last thing to handle is interlacing; this is covered in detail below,
-but you must call the function here if you want libpng to handle expansion
-of the interlaced image.
-
- number_of_passes = png_set_interlace_handling(png_ptr);
-
-After setting the transformations, libpng can update your png_info
-structure to reflect any transformations you've requested with this
-call.
-
- png_read_update_info(png_ptr, info_ptr);
-
-This is most useful to update the info structure's rowbytes
-field so you can use it to allocate your image memory. This function
-will also update your palette with the correct screen_gamma and
-background if these have been given with the calls above. You may
-only call png_read_update_info() once with a particular info_ptr.
-
-After you call png_read_update_info(), you can allocate any
-memory you need to hold the image. The row data is simply
-raw byte data for all forms of images. As the actual allocation
-varies among applications, no example will be given. If you
-are allocating one large chunk, you will need to build an
-array of pointers to each row, as it will be needed for some
-of the functions below.
-
-Remember: Before you call png_read_update_info(), the png_get_*()
-functions return the values corresponding to the original PNG image.
-After you call png_read_update_info the values refer to the image
-that libpng will output. Consequently you must call all the png_set_
-functions before you call png_read_update_info(). This is particularly
-important for png_set_interlace_handling() - if you are going to call
-png_read_update_info() you must call png_set_interlace_handling() before
-it unless you want to receive interlaced output.
-
-Reading image data
-
-After you've allocated memory, you can read the image data.
-The simplest way to do this is in one function call. If you are
-allocating enough memory to hold the whole image, you can just
-call png_read_image() and libpng will read in all the image data
-and put it in the memory area supplied. You will need to pass in
-an array of pointers to each row.
-
-This function automatically handles interlacing, so you don't
-need to call png_set_interlace_handling() (unless you call
-png_read_update_info()) or call this function multiple times, or any
-of that other stuff necessary with png_read_rows().
-
- png_read_image(png_ptr, row_pointers);
-
-where row_pointers is:
-
- png_bytep row_pointers[height];
-
-You can point to void or char or whatever you use for pixels.
-
-If you don't want to read in the whole image at once, you can
-use png_read_rows() instead. If there is no interlacing (check
-interlace_type == PNG_INTERLACE_NONE), this is simple:
-
- png_read_rows(png_ptr, row_pointers, NULL,
- number_of_rows);
-
-where row_pointers is the same as in the png_read_image() call.
-
-If you are doing this just one row at a time, you can do this with
-a single row_pointer instead of an array of row_pointers:
-
- png_bytep row_pointer = row;
- png_read_row(png_ptr, row_pointer, NULL);
-
-If the file is interlaced (interlace_type != 0 in the IHDR chunk), things
-get somewhat harder. The only current (PNG Specification version 1.2)
-interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7);
-a somewhat complicated 2D interlace scheme, known as Adam7, that
-breaks down an image into seven smaller images of varying size, based
-on an 8x8 grid. This number is defined (from libpng 1.5) as
-PNG_INTERLACE_ADAM7_PASSES in png.h
-
-libpng can fill out those images or it can give them to you "as is".
-It is almost always better to have libpng handle the interlacing for you.
-If you want the images filled out, there are two ways to do that. The one
-mentioned in the PNG specification is to expand each pixel to cover
-those pixels that have not been read yet (the "rectangle" method).
-This results in a blocky image for the first pass, which gradually
-smooths out as more pixels are read. The other method is the "sparkle"
-method, where pixels are drawn only in their final locations, with the
-rest of the image remaining whatever colors they were initialized to
-before the start of the read. The first method usually looks better,
-but tends to be slower, as there are more pixels to put in the rows.
-
-If, as is likely, you want libpng to expand the images, call this before
-calling png_start_read_image() or png_read_update_info():
-
- if (interlace_type == PNG_INTERLACE_ADAM7)
- number_of_passes
- = png_set_interlace_handling(png_ptr);
-
-This will return the number of passes needed. Currently, this is seven,
-but may change if another interlace type is added. This function can be
-called even if the file is not interlaced, where it will return one pass.
-You then need to read the whole image 'number_of_passes' times. Each time
-will distribute the pixels from the current pass to the correct place in
-the output image, so you need to supply the same rows to png_read_rows in
-each pass.
-
-If you are not going to display the image after each pass, but are
-going to wait until the entire image is read in, use the sparkle
-effect. This effect is faster and the end result of either method
-is exactly the same. If you are planning on displaying the image
-after each pass, the "rectangle" effect is generally considered the
-better looking one.
-
-If you only want the "sparkle" effect, just call png_read_rows() as
-normal, with the third parameter NULL. Make sure you make pass over
-the image number_of_passes times, and you don't change the data in the
-rows between calls. You can change the locations of the data, just
-not the data. Each pass only writes the pixels appropriate for that
-pass, and assumes the data from previous passes is still valid.
-
- png_read_rows(png_ptr, row_pointers, NULL,
- number_of_rows);
-
-If you only want the first effect (the rectangles), do the same as
-before except pass the row buffer in the third parameter, and leave
-the second parameter NULL.
-
- png_read_rows(png_ptr, NULL, row_pointers,
- number_of_rows);
-
-If you don't want libpng to handle the interlacing details, just call
-png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
-Each of the images is a valid image by itself; however, you will almost
-certainly need to distribute the pixels from each sub-image to the
-correct place. This is where everything gets very tricky.
-
-If you want to retrieve the separate images you must pass the correct
-number of rows to each successive call of png_read_rows(). The calculation
-gets pretty complicated for small images, where some sub-images may
-not even exist because either their width or height ends up zero.
-libpng provides two macros to help you in 1.5 and later versions:
-
- png_uint_32 width = PNG_PASS_COLS(image_width, pass_number);
- png_uint_32 height = PNG_PASS_ROWS(image_height, pass_number);
-
-Respectively these tell you the width and height of the sub-image
-corresponding to the numbered pass. 'pass' is in in the range 0 to 6 -
-this can be confusing because the specification refers to the same passes
-as 1 to 7! Be careful, you must check both the width and height before
-calling png_read_rows() and not call it for that pass if either is zero.
-
-You can, of course, read each sub-image row by row. If you want to
-produce optimal code to make a pixel-by-pixel transformation of an
-interlaced image this is the best approach; read each row of each pass,
-transform it, and write it out to a new interlaced image.
-
-If you want to de-interlace the image yourself libpng provides further
-macros to help that tell you where to place the pixels in the output image.
-Because the interlacing scheme is rectangular - sub-image pixels are always
-arranged on a rectangular grid - all you need to know for each pass is the
-starting column and row in the output image of the first pixel plus the
-spacing between each pixel. As of libpng 1.5 there are four macros to
-retrieve this information:
-
- png_uint_32 x = PNG_PASS_START_COL(pass);
- png_uint_32 y = PNG_PASS_START_ROW(pass);
- png_uint_32 xStep = 1U << PNG_PASS_COL_SHIFT(pass);
- png_uint_32 yStep = 1U << PNG_PASS_ROW_SHIFT(pass);
-
-These allow you to write the obvious loop:
-
- png_uint_32 input_y = 0;
- png_uint_32 output_y = PNG_PASS_START_ROW(pass);
-
- while (output_y < output_image_height)
- {
- png_uint_32 input_x = 0;
- png_uint_32 output_x = PNG_PASS_START_COL(pass);
-
- while (output_x < output_image_width)
- {
- image[output_y][output_x] =
- subimage[pass][input_y][input_x++];
-
- output_x += xStep;
- }
-
- ++input_y;
- output_y += yStep;
- }
-
-Notice that the steps between successive output rows and columns are
-returned as shifts. This is possible because the pixels in the subimages
-are always a power of 2 apart - 1, 2, 4 or 8 pixels - in the original
-image. In practice you may need to directly calculate the output coordinate
-given an input coordinate. libpng provides two further macros for this
-purpose:
-
- png_uint_32 output_x = PNG_COL_FROM_PASS_COL(input_x, pass);
- png_uint_32 output_y = PNG_ROW_FROM_PASS_ROW(input_y, pass);
-
-Finally a pair of macros are provided to tell you if a particular image
-row or column appears in a given pass:
-
- int col_in_pass = PNG_COL_IN_INTERLACE_PASS(output_x, pass);
- int row_in_pass = PNG_ROW_IN_INTERLACE_PASS(output_y, pass);
-
-Bear in mind that you will probably also need to check the width and height
-of the pass in addition to the above to be sure the pass even exists!
-
-With any luck you are convinced by now that you don't want to do your own
-interlace handling. In reality normally the only good reason for doing this
-is if you are processing PNG files on a pixel-by-pixel basis and don't want
-to load the whole file into memory when it is interlaced.
-
-libpng includes a test program, pngvalid, that illustrates reading and
-writing of interlaced images. If you can't get interlacing to work in your
-code and don't want to leave it to libpng (the recommended approach), see
-how pngvalid.c does it.
-
-Finishing a sequential read
-
-After you are finished reading the image through the
-low-level interface, you can finish reading the file. If you are
-interested in comments or time, which may be stored either before or
-after the image data, you should pass the separate png_info struct if
-you want to keep the comments from before and after the image
-separate.
-
- png_infop end_info = png_create_info_struct(png_ptr);
-
- if (!end_info)
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
- png_read_end(png_ptr, end_info);
-
-If you are not interested, you should still call png_read_end()
-but you can pass NULL, avoiding the need to create an end_info structure.
-
- png_read_end(png_ptr, (png_infop)NULL);
-
-If you don't call png_read_end(), then your file pointer will be
-left pointing to the first chunk after the last IDAT, which is probably
-not what you want if you expect to read something beyond the end of
-the PNG datastream.
-
-When you are done, you can free all memory allocated by libpng like this:
-
- png_destroy_read_struct(&png_ptr, &info_ptr,
- &end_info);
-
-or, if you didn't create an end_info structure,
-
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
-
-It is also possible to individually free the info_ptr members that
-point to libpng-allocated storage with the following function:
-
- png_free_data(png_ptr, info_ptr, mask, seq)
-
- mask - identifies data to be freed, a mask
- containing the bitwise OR of one or
- more of
- PNG_FREE_PLTE, PNG_FREE_TRNS,
- PNG_FREE_HIST, PNG_FREE_ICCP,
- PNG_FREE_PCAL, PNG_FREE_ROWS,
- PNG_FREE_SCAL, PNG_FREE_SPLT,
- PNG_FREE_TEXT, PNG_FREE_UNKN,
- or simply PNG_FREE_ALL
-
- seq - sequence number of item to be freed
- (-1 for all items)
-
-This function may be safely called when the relevant storage has
-already been freed, or has not yet been allocated, or was allocated
-by the user and not by libpng, and will in those cases do nothing.
-The "seq" parameter is ignored if only one item of the selected data
-type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
-are allowed for the data type identified in the mask, such as text or
-sPLT, only the n'th item in the structure is freed, where n is "seq".
-
-The default behavior is only to free data that was allocated internally
-by libpng. This can be changed, so that libpng will not free the data,
-or so that it will free data that was allocated by the user with png_malloc()
-or png_calloc() and passed in via a png_set_*() function, with
-
- png_data_freer(png_ptr, info_ptr, freer, mask)
-
- freer - one of
- PNG_DESTROY_WILL_FREE_DATA
- PNG_SET_WILL_FREE_DATA
- PNG_USER_WILL_FREE_DATA
-
- mask - which data elements are affected
- same choices as in png_free_data()
-
-This function only affects data that has already been allocated.
-You can call this function after reading the PNG data but before calling
-any png_set_*() functions, to control whether the user or the png_set_*()
-function is responsible for freeing any existing data that might be present,
-and again after the png_set_*() functions to control whether the user
-or png_destroy_*() is supposed to free the data. When the user assumes
-responsibility for libpng-allocated data, the application must use
-png_free() to free it, and when the user transfers responsibility to libpng
-for data that the user has allocated, the user must have used png_malloc()
-or png_calloc() to allocate it.
-
-If you allocated your row_pointers in a single block, as suggested above in
-the description of the high level read interface, you must not transfer
-responsibility for freeing it to the png_set_rows or png_read_destroy function,
-because they would also try to free the individual row_pointers[i].
-
-If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
-separately, do not transfer responsibility for freeing text_ptr to libpng,
-because when libpng fills a png_text structure it combines these members with
-the key member, and png_free_data() will free only text_ptr.key. Similarly,
-if you transfer responsibility for free'ing text_ptr from libpng to your
-application, your application must not separately free those members.
-
-The png_free_data() function will turn off the "valid" flag for anything
-it frees. If you need to turn the flag off for a chunk that was freed by
-your application instead of by libpng, you can use
-
- png_set_invalid(png_ptr, info_ptr, mask);
-
- mask - identifies the chunks to be made invalid,
- containing the bitwise OR of one or
- more of
- PNG_INFO_gAMA, PNG_INFO_sBIT,
- PNG_INFO_cHRM, PNG_INFO_PLTE,
- PNG_INFO_tRNS, PNG_INFO_bKGD,
- PNG_INFO_hIST, PNG_INFO_pHYs,
- PNG_INFO_oFFs, PNG_INFO_tIME,
- PNG_INFO_pCAL, PNG_INFO_sRGB,
- PNG_INFO_iCCP, PNG_INFO_sPLT,
- PNG_INFO_sCAL, PNG_INFO_IDAT
-
-For a more compact example of reading a PNG image, see the file example.c.
-
-Reading PNG files progressively
-
-The progressive reader is slightly different from the non-progressive
-reader. Instead of calling png_read_info(), png_read_rows(), and
-png_read_end(), you make one call to png_process_data(), which calls
-callbacks when it has the info, a row, or the end of the image. You
-set up these callbacks with png_set_progressive_read_fn(). You don't
-have to worry about the input/output functions of libpng, as you are
-giving the library the data directly in png_process_data(). I will
-assume that you have read the section on reading PNG files above,
-so I will only highlight the differences (although I will show
-all of the code).
-
-png_structp png_ptr;
-png_infop info_ptr;
-
- /* An example code fragment of how you would
- initialize the progressive reader in your
- application. */
- int
- initialize_png_reader()
- {
- png_ptr = png_create_read_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
-
- if (!png_ptr)
- return (ERROR);
-
- info_ptr = png_create_info_struct(png_ptr);
-
- if (!info_ptr)
- {
- png_destroy_read_struct(&png_ptr,
- (png_infopp)NULL, (png_infopp)NULL);
- return (ERROR);
- }
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
- /* This one's new. You can provide functions
- to be called when the header info is valid,
- when each row is completed, and when the image
- is finished. If you aren't using all functions,
- you can specify NULL parameters. Even when all
- three functions are NULL, you need to call
- png_set_progressive_read_fn(). You can use
- any struct as the user_ptr (cast to a void pointer
- for the function call), and retrieve the pointer
- from inside the callbacks using the function
-
- png_get_progressive_ptr(png_ptr);
-
- which will return a void pointer, which you have
- to cast appropriately.
- */
- png_set_progressive_read_fn(png_ptr, (void *)user_ptr,
- info_callback, row_callback, end_callback);
-
- return 0;
- }
-
- /* A code fragment that you call as you receive blocks
- of data */
- int
- process_data(png_bytep buffer, png_uint_32 length)
- {
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
- /* This one's new also. Simply give it a chunk
- of data from the file stream (in order, of
- course). On machines with segmented memory
- models machines, don't give it any more than
- 64K. The library seems to run fine with sizes
- of 4K. Although you can give it much less if
- necessary (I assume you can give it chunks of
- 1 byte, I haven't tried less then 256 bytes
- yet). When this function returns, you may
- want to display any rows that were generated
- in the row callback if you don't already do
- so there.
- */
- png_process_data(png_ptr, info_ptr, buffer, length);
-
- /* At this point you can call png_process_data_skip if
- you want to handle data the library will skip yourself;
- it simply returns the number of bytes to skip (and stops
- libpng skipping that number of bytes on the next
- png_process_data call).
- return 0;
- }
-
- /* This function is called (as set by
- png_set_progressive_read_fn() above) when enough data
- has been supplied so all of the header has been
- read.
- */
- void
- info_callback(png_structp png_ptr, png_infop info)
- {
- /* Do any setup here, including setting any of
- the transformations mentioned in the Reading
- PNG files section. For now, you _must_ call
- either png_start_read_image() or
- png_read_update_info() after all the
- transformations are set (even if you don't set
- any). You may start getting rows before
- png_process_data() returns, so this is your
- last chance to prepare for that.
-
- This is where you turn on interlace handling,
- assuming you don't want to do it yourself.
-
- If you need to you can stop the processing of
- your original input data at this point by calling
- png_process_data_pause. This returns the number
- of unprocessed bytes from the last png_process_data
- call - it is up to you to ensure that the next call
- sees these bytes again. If you don't want to bother
- with this you can get libpng to cache the unread
- bytes by setting the 'save' parameter (see png.h) but
- then libpng will have to copy the data internally.
- */
- }
-
- /* This function is called when each row of image
- data is complete */
- void
- row_callback(png_structp png_ptr, png_bytep new_row,
- png_uint_32 row_num, int pass)
- {
- /* If the image is interlaced, and you turned
- on the interlace handler, this function will
- be called for every row in every pass. Some
- of these rows will not be changed from the
- previous pass. When the row is not changed,
- the new_row variable will be NULL. The rows
- and passes are called in order, so you don't
- really need the row_num and pass, but I'm
- supplying them because it may make your life
- easier.
-
- If you did not turn on interlace handling then
- the callback is called for each row of each
- sub-image when the image is interlaced. In this
- case 'row_num' is the row in the sub-image, not
- the row in the output image as it is in all other
- cases.
-
- For the non-NULL rows of interlaced images when
- you have switched on libpng interlace handling,
- you must call png_progressive_combine_row()
- passing in the row and the old row. You can
- call this function for NULL rows (it will just
- return) and for non-interlaced images (it just
- does the memcpy for you) if it will make the
- code easier. Thus, you can just do this for
- all cases if you switch on interlace handling;
- */
-
- png_progressive_combine_row(png_ptr, old_row,
- new_row);
-
- /* where old_row is what was displayed for
- previously for the row. Note that the first
- pass (pass == 0, really) will completely cover
- the old row, so the rows do not have to be
- initialized. After the first pass (and only
- for interlaced images), you will have to pass
- the current row, and the function will combine
- the old row and the new row.
-
- You can also call png_process_data_pause in this
- callback - see above.
- */
- }
-
- void
- end_callback(png_structp png_ptr, png_infop info)
- {
- /* This function is called after the whole image
- has been read, including any chunks after the
- image (up to and including the IEND). You
- will usually have the same info chunk as you
- had in the header, although some data may have
- been added to the comments and time fields.
-
- Most people won't do much here, perhaps setting
- a flag that marks the image as finished.
- */
- }
-
-
-
-IV. Writing
-
-Much of this is very similar to reading. However, everything of
-importance is repeated here, so you won't have to constantly look
-back up in the reading section to understand writing.
-
-Setup
-
-You will want to do the I/O initialization before you get into libpng,
-so if it doesn't work, you don't have anything to undo. If you are not
-using the standard I/O functions, you will need to replace them with
-custom writing functions. See the discussion under Customizing libpng.
-
- FILE *fp = fopen(file_name, "wb");
-
- if (!fp)
- return (ERROR);
-
-Next, png_struct and png_info need to be allocated and initialized.
-As these can be both relatively large, you may not want to store these
-on the stack, unless you have stack space to spare. Of course, you
-will want to check if they return NULL. If you are also reading,
-you won't want to name your read structure and your write structure
-both "png_ptr"; you can call them anything you like, such as
-"read_ptr" and "write_ptr". Look at pngtest.c, for example.
-
- png_structp png_ptr = png_create_write_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
-
- if (!png_ptr)
- return (ERROR);
-
- png_infop info_ptr = png_create_info_struct(png_ptr);
- if (!info_ptr)
- {
- png_destroy_write_struct(&png_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
-If you want to use your own memory allocation routines,
-define PNG_USER_MEM_SUPPORTED and use
-png_create_write_struct_2() instead of png_create_write_struct():
-
- png_structp png_ptr = png_create_write_struct_2
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn, (png_voidp)
- user_mem_ptr, user_malloc_fn, user_free_fn);
-
-After you have these structures, you will need to set up the
-error handling. When libpng encounters an error, it expects to
-longjmp() back to your routine. Therefore, you will need to call
-setjmp() and pass the png_jmpbuf(png_ptr). If you
-write the file from different routines, you will need to update
-the png_jmpbuf(png_ptr) every time you enter a new routine that will
-call a png_*() function. See your documentation of setjmp/longjmp
-for your compiler for more information on setjmp/longjmp. See
-the discussion on libpng error handling in the Customizing Libpng
-section below for more information on the libpng error handling.
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_write_struct(&png_ptr, &info_ptr);
- fclose(fp);
- return (ERROR);
- }
- ...
- return;
-
-If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
-errors will result in a call to PNG_ABORT() which defaults to abort().
-
-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
-Checking for invalid palette index on write was added at libpng
-1.5.10. If a pixel contains an invalid (out-of-range) index libpng issues
-a benign error. This is enabled by default because this condition is an
-error according to the PNG specification, Clause 11.3.2, but the error can
-be ignored in each png_ptr with
-
- png_set_check_for_invalid_index(png_ptr, 0);
-
-If the error is ignored, or if png_benign_error() treats it as a warning,
-any invalid pixels are written as-is by the encoder, resulting in an
-invalid PNG datastream as output. In this case the application is
-responsible for ensuring that the pixel indexes are in range when it writes
-a PLTE chunk with fewer entries than the bit depth would allow.
-
-Now you need to set up the output code. The default for libpng is to
-use the C function fwrite(). If you use this, you will need to pass a
-valid FILE * in the function png_init_io(). Be sure that the file is
-opened in binary mode. Again, if you wish to handle writing data in
-another way, see the discussion on libpng I/O handling in the Customizing
-Libpng section below.
-
- png_init_io(png_ptr, fp);
-
-If you are embedding your PNG into a datastream such as MNG, and don't
-want libpng to write the 8-byte signature, or if you have already
-written the signature in your application, use
-
- png_set_sig_bytes(png_ptr, 8);
-
-to inform libpng that it should not write a signature.
-
-Write callbacks
-
-At this point, you can set up a callback function that will be
-called after each row has been written, which you can use to control
-a progress meter or the like. It's demonstrated in pngtest.c.
-You must supply a function
-
- void write_row_callback(png_structp png_ptr, png_uint_32 row,
- int pass);
- {
- /* put your code here */
- }
-
-(You can give it another name that you like instead of "write_row_callback")
-
-To inform libpng about your function, use
-
- png_set_write_status_fn(png_ptr, write_row_callback);
-
-When this function is called the row has already been completely processed and
-it has also been written out. The 'row' and 'pass' refer to the next row to be
-handled. For the
-non-interlaced case the row that was just handled is simply one less than the
-passed in row number, and pass will always be 0. For the interlaced case the
-same applies unless the row value is 0, in which case the row just handled was
-the last one from one of the preceding passes. Because interlacing may skip a
-pass you cannot be sure that the preceding pass is just 'pass-1', if you really
-need to know what the last pass is record (row,pass) from the callback and use
-the last recorded value each time.
-
-As with the user transform you can find the output row using the
-PNG_ROW_FROM_PASS_ROW macro.
-
-You now have the option of modifying how the compression library will
-run. The following functions are mainly for testing, but may be useful
-in some cases, like if you need to write PNG files extremely fast and
-are willing to give up some compression, or if you want to get the
-maximum possible compression at the expense of slower writing. If you
-have no special needs in this area, let the library do what it wants by
-not calling this function at all, as it has been tuned to deliver a good
-speed/compression ratio. The second parameter to png_set_filter() is
-the filter method, for which the only valid values are 0 (as of the
-July 1999 PNG specification, version 1.2) or 64 (if you are writing
-a PNG datastream that is to be embedded in a MNG datastream). The third
-parameter is a flag that indicates which filter type(s) are to be tested
-for each scanline. See the PNG specification for details on the specific
-filter types.
-
-
- /* turn on or off filtering, and/or choose
- specific filters. You can use either a single
- PNG_FILTER_VALUE_NAME or the bitwise OR of one
- or more PNG_FILTER_NAME masks.
- */
- png_set_filter(png_ptr, 0,
- PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
- PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
- PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
- PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
- PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
- PNG_ALL_FILTERS);
-
-If an application wants to start and stop using particular filters during
-compression, it should start out with all of the filters (to ensure that
-the previous row of pixels will be stored in case it's needed later),
-and then add and remove them after the start of compression.
-
-If you are writing a PNG datastream that is to be embedded in a MNG
-datastream, the second parameter can be either 0 or 64.
-
-The png_set_compression_*() functions interface to the zlib compression
-library, and should mostly be ignored unless you really know what you are
-doing. The only generally useful call is png_set_compression_level()
-which changes how much time zlib spends on trying to compress the image
-data. See the Compression Library (zlib.h and algorithm.txt, distributed
-with zlib) for details on the compression levels.
-
- #include zlib.h
-
- /* Set the zlib compression level */
- png_set_compression_level(png_ptr,
- Z_BEST_COMPRESSION);
-
- /* Set other zlib parameters for compressing IDAT */
- png_set_compression_mem_level(png_ptr, 8);
- png_set_compression_strategy(png_ptr,
- Z_DEFAULT_STRATEGY);
- png_set_compression_window_bits(png_ptr, 15);
- png_set_compression_method(png_ptr, 8);
- png_set_compression_buffer_size(png_ptr, 8192)
-
- /* Set zlib parameters for text compression
- * If you don't call these, the parameters
- * fall back on those defined for IDAT chunks
- */
- png_set_text_compression_mem_level(png_ptr, 8);
- png_set_text_compression_strategy(png_ptr,
- Z_DEFAULT_STRATEGY);
- png_set_text_compression_window_bits(png_ptr, 15);
- png_set_text_compression_method(png_ptr, 8);
-
-Setting the contents of info for output
-
-You now need to fill in the png_info structure with all the data you
-wish to write before the actual image. Note that the only thing you
-are allowed to write after the image is the text chunks and the time
-chunk (as of PNG Specification 1.2, anyway). See png_write_end() and
-the latest PNG specification for more information on that. If you
-wish to write them before the image, fill them in now, and flag that
-data as being valid. If you want to wait until after the data, don't
-fill them until png_write_end(). For all the fields in png_info and
-their data types, see png.h. For explanations of what the fields
-contain, see the PNG specification.
-
-Some of the more important parts of the png_info are:
-
- png_set_IHDR(png_ptr, info_ptr, width, height,
- bit_depth, color_type, interlace_type,
- compression_type, filter_method)
-
- width - holds the width of the image
- in pixels (up to 2^31).
-
- height - holds the height of the image
- in pixels (up to 2^31).
-
- bit_depth - holds the bit depth of one of the
- image channels.
- (valid values are 1, 2, 4, 8, 16
- and depend also on the
- color_type. See also significant
- bits (sBIT) below).
-
- color_type - describes which color/alpha
- channels are present.
- PNG_COLOR_TYPE_GRAY
- (bit depths 1, 2, 4, 8, 16)
- PNG_COLOR_TYPE_GRAY_ALPHA
- (bit depths 8, 16)
- PNG_COLOR_TYPE_PALETTE
- (bit depths 1, 2, 4, 8)
- PNG_COLOR_TYPE_RGB
- (bit_depths 8, 16)
- PNG_COLOR_TYPE_RGB_ALPHA
- (bit_depths 8, 16)
-
- PNG_COLOR_MASK_PALETTE
- PNG_COLOR_MASK_COLOR
- PNG_COLOR_MASK_ALPHA
-
- interlace_type - PNG_INTERLACE_NONE or
- PNG_INTERLACE_ADAM7
-
- compression_type - (must be
- PNG_COMPRESSION_TYPE_DEFAULT)
-
- filter_method - (must be PNG_FILTER_TYPE_DEFAULT
- or, if you are writing a PNG to
- be embedded in a MNG datastream,
- can also be
- PNG_INTRAPIXEL_DIFFERENCING)
-
-If you call png_set_IHDR(), the call must appear before any of the
-other png_set_*() functions, because they might require access to some of
-the IHDR settings. The remaining png_set_*() functions can be called
-in any order.
-
-If you wish, you can reset the compression_type, interlace_type, or
-filter_method later by calling png_set_IHDR() again; if you do this, the
-width, height, bit_depth, and color_type must be the same in each call.
-
- png_set_PLTE(png_ptr, info_ptr, palette,
- num_palette);
-
- palette - the palette for the file
- (array of png_color)
- num_palette - number of entries in the palette
-
- png_set_gAMA(png_ptr, info_ptr, file_gamma);
- png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
-
- file_gamma - the gamma at which the image was
- created (PNG_INFO_gAMA)
-
- int_file_gamma - 100,000 times the gamma at which
- the image was created
-
- png_set_cHRM(png_ptr, info_ptr, white_x, white_y, red_x, red_y,
- green_x, green_y, blue_x, blue_y)
- png_set_cHRM_XYZ(png_ptr, info_ptr, red_X, red_Y, red_Z, green_X,
- green_Y, green_Z, blue_X, blue_Y, blue_Z)
- png_set_cHRM_fixed(png_ptr, info_ptr, int_white_x, int_white_y,
- int_red_x, int_red_y, int_green_x, int_green_y,
- int_blue_x, int_blue_y)
- png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, int_red_X, int_red_Y,
- int_red_Z, int_green_X, int_green_Y, int_green_Z,
- int_blue_X, int_blue_Y, int_blue_Z)
-
- {white,red,green,blue}_{x,y}
- A color space encoding specified using the chromaticities
- of the end points and the white point.
-
- {red,green,blue}_{X,Y,Z}
- A color space encoding specified using the encoding end
- points - the CIE tristimulus specification of the intended
- color of the red, green and blue channels in the PNG RGB
- data. The white point is simply the sum of the three end
- points.
-
- png_set_sRGB(png_ptr, info_ptr, srgb_intent);
-
- srgb_intent - the rendering intent
- (PNG_INFO_sRGB) The presence of
- the sRGB chunk means that the pixel
- data is in the sRGB color space.
- This chunk also implies specific
- values of gAMA and cHRM. Rendering
- intent is the CSS-1 property that
- has been defined by the International
- Color Consortium
- (http://www.color.org).
- It can be one of
- PNG_sRGB_INTENT_SATURATION,
- PNG_sRGB_INTENT_PERCEPTUAL,
- PNG_sRGB_INTENT_ABSOLUTE, or
- PNG_sRGB_INTENT_RELATIVE.
-
-
- png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
- srgb_intent);
-
- srgb_intent - the rendering intent
- (PNG_INFO_sRGB) The presence of the
- sRGB chunk means that the pixel
- data is in the sRGB color space.
- This function also causes gAMA and
- cHRM chunks with the specific values
- that are consistent with sRGB to be
- written.
-
- png_set_iCCP(png_ptr, info_ptr, name, compression_type,
- profile, proflen);
-
- name - The profile name.
-
- compression_type - The compression type; always
- PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
- You may give NULL to this argument to
- ignore it.
-
- profile - International Color Consortium color
- profile data. May contain NULs.
-
- proflen - length of profile data in bytes.
-
- png_set_sBIT(png_ptr, info_ptr, sig_bit);
-
- sig_bit - the number of significant bits for
- (PNG_INFO_sBIT) each of the gray, red,
- green, and blue channels, whichever are
- appropriate for the given color type
- (png_color_16)
-
- png_set_tRNS(png_ptr, info_ptr, trans_alpha,
- num_trans, trans_color);
-
- trans_alpha - array of alpha (transparency)
- entries for palette (PNG_INFO_tRNS)
-
- num_trans - number of transparent entries
- (PNG_INFO_tRNS)
-
- trans_color - graylevel or color sample values
- (in order red, green, blue) of the
- single transparent color for
- non-paletted images (PNG_INFO_tRNS)
-
- png_set_hIST(png_ptr, info_ptr, hist);
-
- hist - histogram of palette (array of
- png_uint_16) (PNG_INFO_hIST)
-
- png_set_tIME(png_ptr, info_ptr, mod_time);
-
- mod_time - time image was last modified
- (PNG_VALID_tIME)
-
- png_set_bKGD(png_ptr, info_ptr, background);
-
- background - background color (of type
- png_color_16p) (PNG_VALID_bKGD)
-
- png_set_text(png_ptr, info_ptr, text_ptr, num_text);
-
- text_ptr - array of png_text holding image
- comments
-
- text_ptr[i].compression - type of compression used
- on "text" PNG_TEXT_COMPRESSION_NONE
- PNG_TEXT_COMPRESSION_zTXt
- PNG_ITXT_COMPRESSION_NONE
- PNG_ITXT_COMPRESSION_zTXt
- text_ptr[i].key - keyword for comment. Must contain
- 1-79 characters.
- text_ptr[i].text - text comments for current
- keyword. Can be NULL or empty.
- text_ptr[i].text_length - length of text string,
- after decompression, 0 for iTXt
- text_ptr[i].itxt_length - length of itxt string,
- after decompression, 0 for tEXt/zTXt
- text_ptr[i].lang - language of comment (NULL or
- empty for unknown).
- text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
- or empty for unknown).
-
- Note that the itxt_length, lang, and lang_key
- members of the text_ptr structure only exist when the
- library is built with iTXt chunk support. Prior to
- libpng-1.4.0 the library was built by default without
- iTXt support. Also note that when iTXt is supported,
- they contain NULL pointers when the "compression"
- field contains PNG_TEXT_COMPRESSION_NONE or
- PNG_TEXT_COMPRESSION_zTXt.
-
- num_text - number of comments
-
- png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
- num_spalettes);
-
- palette_ptr - array of png_sPLT_struct structures
- to be added to the list of palettes
- in the info structure.
- num_spalettes - number of palette structures to be
- added.
-
- png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y,
- unit_type);
-
- offset_x - positive offset from the left
- edge of the screen
-
- offset_y - positive offset from the top
- edge of the screen
-
- unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
-
- png_set_pHYs(png_ptr, info_ptr, res_x, res_y,
- unit_type);
-
- res_x - pixels/unit physical resolution
- in x direction
-
- res_y - pixels/unit physical resolution
- in y direction
-
- unit_type - PNG_RESOLUTION_UNKNOWN,
- PNG_RESOLUTION_METER
-
- png_set_sCAL(png_ptr, info_ptr, unit, width, height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
-
- height - height of a pixel in physical scale units
- (width and height are doubles)
-
- png_set_sCAL_s(png_ptr, info_ptr, unit, width, height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
- expressed as a string
-
- height - height of a pixel in physical scale units
- (width and height are strings like "2.54")
-
- png_set_unknown_chunks(png_ptr, info_ptr, &unknowns,
- num_unknowns)
-
- unknowns - array of png_unknown_chunk
- structures holding unknown chunks
- unknowns[i].name - name of unknown chunk
- unknowns[i].data - data of unknown chunk
- unknowns[i].size - size of unknown chunk's data
- unknowns[i].location - position to write chunk in file
- 0: do not write chunk
- PNG_HAVE_IHDR: before PLTE
- PNG_HAVE_PLTE: before IDAT
- PNG_AFTER_IDAT: after IDAT
-
-The "location" member is set automatically according to
-what part of the output file has already been written.
-You can change its value after calling png_set_unknown_chunks()
-as demonstrated in pngtest.c. Within each of the "locations",
-the chunks are sequenced according to their position in the
-structure (that is, the value of "i", which is the order in which
-the chunk was either read from the input file or defined with
-png_set_unknown_chunks).
-
-A quick word about text and num_text. text is an array of png_text
-structures. num_text is the number of valid structures in the array.
-Each png_text structure holds a language code, a keyword, a text value,
-and a compression type.
-
-The compression types have the same valid numbers as the compression
-types of the image data. Currently, the only valid number is zero.
-However, you can store text either compressed or uncompressed, unlike
-images, which always have to be compressed. So if you don't want the
-text compressed, set the compression type to PNG_TEXT_COMPRESSION_NONE.
-Because tEXt and zTXt chunks don't have a language field, if you
-specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt
-any language code or translated keyword will not be written out.
-
-Until text gets around a few hundred bytes, it is not worth compressing it.
-After the text has been written out to the file, the compression type
-is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR,
-so that it isn't written out again at the end (in case you are calling
-png_write_end() with the same struct).
-
-The keywords that are given in the PNG Specification are:
-
- Title Short (one line) title or
- caption for image
-
- Author Name of image's creator
-
- Description Description of image (possibly long)
-
- Copyright Copyright notice
-
- Creation Time Time of original image creation
- (usually RFC 1123 format, see below)
-
- Software Software used to create the image
-
- Disclaimer Legal disclaimer
-
- Warning Warning of nature of content
-
- Source Device used to create the image
-
- Comment Miscellaneous comment; conversion
- from other image format
-
-The keyword-text pairs work like this. Keywords should be short
-simple descriptions of what the comment is about. Some typical
-keywords are found in the PNG specification, as is some recommendations
-on keywords. You can repeat keywords in a file. You can even write
-some text before the image and some after. For example, you may want
-to put a description of the image before the image, but leave the
-disclaimer until after, so viewers working over modem connections
-don't have to wait for the disclaimer to go over the modem before
-they start seeing the image. Finally, keywords should be full
-words, not abbreviations. Keywords and text are in the ISO 8859-1
-(Latin-1) character set (a superset of regular ASCII) and can not
-contain NUL characters, and should not contain control or other
-unprintable characters. To make the comments widely readable, stick
-with basic ASCII, and avoid machine specific character set extensions
-like the IBM-PC character set. The keyword must be present, but
-you can leave off the text string on non-compressed pairs.
-Compressed pairs must have a text string, as only the text string
-is compressed anyway, so the compression would be meaningless.
-
-PNG supports modification time via the png_time structure. Two
-conversion routines are provided, png_convert_from_time_t() for
-time_t and png_convert_from_struct_tm() for struct tm. The
-time_t routine uses gmtime(). You don't have to use either of
-these, but if you wish to fill in the png_time structure directly,
-you should provide the time in universal time (GMT) if possible
-instead of your local time. Note that the year number is the full
-year (e.g. 1998, rather than 98 - PNG is year 2000 compliant!), and
-that months start with 1.
-
-If you want to store the time of the original image creation, you should
-use a plain tEXt chunk with the "Creation Time" keyword. This is
-necessary because the "creation time" of a PNG image is somewhat vague,
-depending on whether you mean the PNG file, the time the image was
-created in a non-PNG format, a still photo from which the image was
-scanned, or possibly the subject matter itself. In order to facilitate
-machine-readable dates, it is recommended that the "Creation Time"
-tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
-although this isn't a requirement. Unlike the tIME chunk, the
-"Creation Time" tEXt chunk is not expected to be automatically changed
-by the software. To facilitate the use of RFC 1123 dates, a function
-png_convert_to_rfc1123_buffer(png_ptr, buffer, png_timep) is provided to
-convert from PNG time to an RFC 1123 format string. The caller must provide
-a writeable buffer of at least 29 bytes.
-
-Writing unknown chunks
-
-You can use the png_set_unknown_chunks function to queue up private chunks
-for writing. You give it a chunk name, location, raw data, and a size. You
-also must use png_set_keep_unknown_chunks() to ensure that libpng will
-handle them. That's all there is to it. The chunks will be written by the
-next following png_write_info_before_PLTE, png_write_info, or png_write_end
-function, depending upon the specified location. Any chunks previously
-read into the info structure's unknown-chunk list will also be written out
-in a sequence that satisfies the PNG specification's ordering rules.
-
-Here is an example of writing two private chunks, prVt and miNE:
-
- #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- /* Set unknown chunk data */
- png_unknown_chunk unk_chunk[2];
- strcpy((char *) unk_chunk[0].name, "prVt";
- unk_chunk[0].data = (unsigned char *) "PRIVATE DATA";
- unk_chunk[0].size = strlen(unk_chunk[0].data)+1;
- unk_chunk[0].location = PNG_HAVE_IHDR;
- strcpy((char *) unk_chunk[1].name, "miNE";
- unk_chunk[1].data = (unsigned char *) "MY CHUNK DATA";
- unk_chunk[1].size = strlen(unk_chunk[0].data)+1;
- unk_chunk[1].location = PNG_AFTER_IDAT;
- png_set_unknown_chunks(write_ptr, write_info_ptr,
- unk_chunk, 2);
- /* Needed because miNE is not safe-to-copy */
- png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS,
- (png_bytep) "miNE", 1);
- # if PNG_LIBPNG_VER < 10600
- /* Deal with unknown chunk location bug in 1.5.x and earlier */
- png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR);
- png_set_unknown_chunk_location(png, info, 1, PNG_AFTER_IDAT);
- # endif
- # if PNG_LIBPNG_VER < 10500
- /* PNG_AFTER_IDAT writes two copies of the chunk prior to libpng-1.5.0,
- * one before IDAT and another after IDAT, so don't use it; only use
- * PNG_HAVE_IHDR location. This call resets the location previously
- * set by assignment and png_set_unknown_chunk_location() for chunk 1.
- */
- png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR);
- # endif
- #endif
-
-The high-level write interface
-
-At this point there are two ways to proceed; through the high-level
-write interface, or through a sequence of low-level write operations.
-You can use the high-level interface if your image data is present
-in the info structure. All defined output
-transformations are permitted, enabled by the following masks.
-
- PNG_TRANSFORM_IDENTITY No transformation
- PNG_TRANSFORM_PACKING Pack 1, 2 and 4-bit samples
- PNG_TRANSFORM_PACKSWAP Change order of packed
- pixels to LSB first
- PNG_TRANSFORM_INVERT_MONO Invert monochrome images
- PNG_TRANSFORM_SHIFT Normalize pixels to the
- sBIT depth
- PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
- to BGRA
- PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
- to AG
- PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
- to transparency
- PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
- PNG_TRANSFORM_STRIP_FILLER Strip out filler
- bytes (deprecated).
- PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
- filler bytes
- PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing
- filler bytes
-
-If you have valid image data in the info structure (you can use
-png_set_rows() to put image data in the info structure), simply do this:
-
- png_write_png(png_ptr, info_ptr, png_transforms, NULL)
-
-where png_transforms is an integer containing the bitwise OR of some set of
-transformation flags. This call is equivalent to png_write_info(),
-followed the set of transformations indicated by the transform mask,
-then png_write_image(), and finally png_write_end().
-
-(The final parameter of this call is not yet used. Someday it might point
-to transformation parameters required by some future output transform.)
-
-You must use png_transforms and not call any png_set_transform() functions
-when you use png_write_png().
-
-The low-level write interface
-
-If you are going the low-level route instead, you are now ready to
-write all the file information up to the actual image data. You do
-this with a call to png_write_info().
-
- png_write_info(png_ptr, info_ptr);
-
-Note that there is one transformation you may need to do before
-png_write_info(). In PNG files, the alpha channel in an image is the
-level of opacity. If your data is supplied as a level of transparency,
-you can invert the alpha channel before you write it, so that 0 is
-fully transparent and 255 (in 8-bit or paletted images) or 65535
-(in 16-bit images) is fully opaque, with
-
- png_set_invert_alpha(png_ptr);
-
-This must appear before png_write_info() instead of later with the
-other transformations because in the case of paletted images the tRNS
-chunk data has to be inverted before the tRNS chunk is written. If
-your image is not a paletted image, the tRNS data (which in such cases
-represents a single color to be rendered as transparent) won't need to
-be changed, and you can safely do this transformation after your
-png_write_info() call.
-
-If you need to write a private chunk that you want to appear before
-the PLTE chunk when PLTE is present, you can write the PNG info in
-two steps, and insert code to write your own chunk between them:
-
- png_write_info_before_PLTE(png_ptr, info_ptr);
- png_set_unknown_chunks(png_ptr, info_ptr, ...);
- png_write_info(png_ptr, info_ptr);
-
-After you've written the file information, you can set up the library
-to handle any special transformations of the image data. The various
-ways to transform the data will be described in the order that they
-should occur. This is important, as some of these change the color
-type and/or bit depth of the data, and some others only work on
-certain color types and bit depths. Even though each transformation
-checks to see if it has data that it can do something with, you should
-make sure to only enable a transformation if it will be valid for the
-data. For example, don't swap red and blue on grayscale data.
-
-PNG files store RGB pixels packed into 3 or 6 bytes. This code tells
-the library to strip input data that has 4 or 8 bytes per pixel down
-to 3 or 6 bytes (or strip 2 or 4-byte grayscale+filler data to 1 or 2
-bytes per pixel).
-
- png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
-
-where the 0 is unused, and the location is either PNG_FILLER_BEFORE or
-PNG_FILLER_AFTER, depending upon whether the filler byte in the pixel
-is stored XRGB or RGBX.
-
-PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
-they can, resulting in, for example, 8 pixels per byte for 1 bit files.
-If the data is supplied at 1 pixel per byte, use this code, which will
-correctly pack the pixels into a single byte:
-
- png_set_packing(png_ptr);
-
-PNG files reduce possible bit depths to 1, 2, 4, 8, and 16. If your
-data is of another bit depth, you can write an sBIT chunk into the
-file so that decoders can recover the original data if desired.
-
- /* Set the true bit depth of the image data */
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- sig_bit.red = true_bit_depth;
- sig_bit.green = true_bit_depth;
- sig_bit.blue = true_bit_depth;
- }
-
- else
- {
- sig_bit.gray = true_bit_depth;
- }
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- {
- sig_bit.alpha = true_bit_depth;
- }
-
- png_set_sBIT(png_ptr, info_ptr, &sig_bit);
-
-If the data is stored in the row buffer in a bit depth other than
-one supported by PNG (e.g. 3 bit data in the range 0-7 for a 4-bit PNG),
-this will scale the values to appear to be the correct bit depth as
-is required by PNG.
-
- png_set_shift(png_ptr, &sig_bit);
-
-PNG files store 16-bit pixels in network byte order (big-endian,
-ie. most significant bits first). This code would be used if they are
-supplied the other way (little-endian, i.e. least significant bits
-first, the way PCs store them):
-
- if (bit_depth > 8)
- png_set_swap(png_ptr);
-
-If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
-need to change the order the pixels are packed into bytes, you can use:
-
- if (bit_depth < 8)
- png_set_packswap(png_ptr);
-
-PNG files store 3 color pixels in red, green, blue order. This code
-would be used if they are supplied as blue, green, red:
-
- png_set_bgr(png_ptr);
-
-PNG files describe monochrome as black being zero and white being
-one. This code would be used if the pixels are supplied with this reversed
-(black being one and white being zero):
-
- png_set_invert_mono(png_ptr);
-
-Finally, you can write your own transformation function if none of
-the existing ones meets your needs. This is done by setting a callback
-with
-
- png_set_write_user_transform_fn(png_ptr,
- write_transform_fn);
-
-You must supply the function
-
- void write_transform_fn(png_structp png_ptr, png_row_infop
- row_info, png_bytep data)
-
-See pngtest.c for a working example. Your function will be called
-before any of the other transformations are processed. If supported
-libpng also supplies an information routine that may be called from
-your callback:
-
- png_get_current_row_number(png_ptr);
- png_get_current_pass_number(png_ptr);
-
-This returns the current row passed to the transform. With interlaced
-images the value returned is the row in the input sub-image image. Use
-PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
-find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
-
-The discussion of interlace handling above contains more information on how to
-use these values.
-
-You can also set up a pointer to a user structure for use by your
-callback function.
-
- png_set_user_transform_info(png_ptr, user_ptr, 0, 0);
-
-The user_channels and user_depth parameters of this function are ignored
-when writing; you can set them to zero as shown.
-
-You can retrieve the pointer via the function png_get_user_transform_ptr().
-For example:
-
- voidp write_user_transform_ptr =
- png_get_user_transform_ptr(png_ptr);
-
-It is possible to have libpng flush any pending output, either manually,
-or automatically after a certain number of lines have been written. To
-flush the output stream a single time call:
-
- png_write_flush(png_ptr);
-
-and to have libpng flush the output stream periodically after a certain
-number of scanlines have been written, call:
-
- png_set_flush(png_ptr, nrows);
-
-Note that the distance between rows is from the last time png_write_flush()
-was called, or the first row of the image if it has never been called.
-So if you write 50 lines, and then png_set_flush 25, it will flush the
-output on the next scanline, and every 25 lines thereafter, unless
-png_write_flush() is called before 25 more lines have been written.
-If nrows is too small (less than about 10 lines for a 640 pixel wide
-RGB image) the image compression may decrease noticeably (although this
-may be acceptable for real-time applications). Infrequent flushing will
-only degrade the compression performance by a few percent over images
-that do not use flushing.
-
-Writing the image data
-
-That's it for the transformations. Now you can write the image data.
-The simplest way to do this is in one function call. If you have the
-whole image in memory, you can just call png_write_image() and libpng
-will write the image. You will need to pass in an array of pointers to
-each row. This function automatically handles interlacing, so you don't
-need to call png_set_interlace_handling() or call this function multiple
-times, or any of that other stuff necessary with png_write_rows().
-
- png_write_image(png_ptr, row_pointers);
-
-where row_pointers is:
-
- png_byte *row_pointers[height];
-
-You can point to void or char or whatever you use for pixels.
-
-If you don't want to write the whole image at once, you can
-use png_write_rows() instead. If the file is not interlaced,
-this is simple:
-
- png_write_rows(png_ptr, row_pointers,
- number_of_rows);
-
-row_pointers is the same as in the png_write_image() call.
-
-If you are just writing one row at a time, you can do this with
-a single row_pointer instead of an array of row_pointers:
-
- png_bytep row_pointer = row;
-
- png_write_row(png_ptr, row_pointer);
-
-When the file is interlaced, things can get a good deal more complicated.
-The only currently (as of the PNG Specification version 1.2, dated July
-1999) defined interlacing scheme for PNG files is the "Adam7" interlace
-scheme, that breaks down an image into seven smaller images of varying
-size. libpng will build these images for you, or you can do them
-yourself. If you want to build them yourself, see the PNG specification
-for details of which pixels to write when.
-
-If you don't want libpng to handle the interlacing details, just
-use png_set_interlace_handling() and call png_write_rows() the
-correct number of times to write all the sub-images
-(png_set_interlace_handling() returns the number of sub-images.)
-
-If you want libpng to build the sub-images, call this before you start
-writing any rows:
-
- number_of_passes = png_set_interlace_handling(png_ptr);
-
-This will return the number of passes needed. Currently, this is seven,
-but may change if another interlace type is added.
-
-Then write the complete image number_of_passes times.
-
- png_write_rows(png_ptr, row_pointers, number_of_rows);
-
-Think carefully before you write an interlaced image. Typically code that
-reads such images reads all the image data into memory, uncompressed, before
-doing any processing. Only code that can display an image on the fly can
-take advantage of the interlacing and even then the image has to be exactly
-the correct size for the output device, because scaling an image requires
-adjacent pixels and these are not available until all the passes have been
-read.
-
-If you do write an interlaced image you will hardly ever need to handle
-the interlacing yourself. Call png_set_interlace_handling() and use the
-approach described above.
-
-The only time it is conceivable that you will really need to write an
-interlaced image pass-by-pass is when you have read one pass by pass and
-made some pixel-by-pixel transformation to it, as described in the read
-code above. In this case use the PNG_PASS_ROWS and PNG_PASS_COLS macros
-to determine the size of each sub-image in turn and simply write the rows
-you obtained from the read code.
-
-Finishing a sequential write
-
-After you are finished writing the image, you should finish writing
-the file. If you are interested in writing comments or time, you should
-pass an appropriately filled png_info pointer. If you are not interested,
-you can pass NULL.
-
- png_write_end(png_ptr, info_ptr);
-
-When you are done, you can free all memory used by libpng like this:
-
- png_destroy_write_struct(&png_ptr, &info_ptr);
-
-It is also possible to individually free the info_ptr members that
-point to libpng-allocated storage with the following function:
-
- png_free_data(png_ptr, info_ptr, mask, seq)
-
- mask - identifies data to be freed, a mask
- containing the bitwise OR of one or
- more of
- PNG_FREE_PLTE, PNG_FREE_TRNS,
- PNG_FREE_HIST, PNG_FREE_ICCP,
- PNG_FREE_PCAL, PNG_FREE_ROWS,
- PNG_FREE_SCAL, PNG_FREE_SPLT,
- PNG_FREE_TEXT, PNG_FREE_UNKN,
- or simply PNG_FREE_ALL
-
- seq - sequence number of item to be freed
- (-1 for all items)
-
-This function may be safely called when the relevant storage has
-already been freed, or has not yet been allocated, or was allocated
-by the user and not by libpng, and will in those cases do nothing.
-The "seq" parameter is ignored if only one item of the selected data
-type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
-are allowed for the data type identified in the mask, such as text or
-sPLT, only the n'th item in the structure is freed, where n is "seq".
-
-If you allocated data such as a palette that you passed in to libpng
-with png_set_*, you must not free it until just before the call to
-png_destroy_write_struct().
-
-The default behavior is only to free data that was allocated internally
-by libpng. This can be changed, so that libpng will not free the data,
-or so that it will free data that was allocated by the user with png_malloc()
-or png_calloc() and passed in via a png_set_*() function, with
-
- png_data_freer(png_ptr, info_ptr, freer, mask)
-
- freer - one of
- PNG_DESTROY_WILL_FREE_DATA
- PNG_SET_WILL_FREE_DATA
- PNG_USER_WILL_FREE_DATA
-
- mask - which data elements are affected
- same choices as in png_free_data()
-
-For example, to transfer responsibility for some data from a read structure
-to a write structure, you could use
-
- png_data_freer(read_ptr, read_info_ptr,
- PNG_USER_WILL_FREE_DATA,
- PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
-
- png_data_freer(write_ptr, write_info_ptr,
- PNG_DESTROY_WILL_FREE_DATA,
- PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
-
-thereby briefly reassigning responsibility for freeing to the user but
-immediately afterwards reassigning it once more to the write_destroy
-function. Having done this, it would then be safe to destroy the read
-structure and continue to use the PLTE, tRNS, and hIST data in the write
-structure.
-
-This function only affects data that has already been allocated.
-You can call this function before calling after the png_set_*() functions
-to control whether the user or png_destroy_*() is supposed to free the data.
-When the user assumes responsibility for libpng-allocated data, the
-application must use
-png_free() to free it, and when the user transfers responsibility to libpng
-for data that the user has allocated, the user must have used png_malloc()
-or png_calloc() to allocate it.
-
-If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
-separately, do not transfer responsibility for freeing text_ptr to libpng,
-because when libpng fills a png_text structure it combines these members with
-the key member, and png_free_data() will free only text_ptr.key. Similarly,
-if you transfer responsibility for free'ing text_ptr from libpng to your
-application, your application must not separately free those members.
-For a more compact example of writing a PNG image, see the file example.c.
-
-V. Simplified API
-
-The simplified API, which became available in libpng-1.6.0, hides the details
-of both libpng and the PNG file format itself.
-It allows PNG files to be read into a very limited number of
-in-memory bitmap formats or to be written from the same formats. If these
-formats do not accomodate your needs then you can, and should, use the more
-sophisticated APIs above - these support a wide variety of in-memory formats
-and a wide variety of sophisticated transformations to those formats as well
-as a wide variety of APIs to manipulate ancilliary information.
-
-To read a PNG file using the simplified API:
-
- 1) Declare a 'png_image' structure (see below) on the
- stack and memset() it to all zero.
-
- 2) Call the appropriate png_image_begin_read... function.
-
- 3) Set the png_image 'format' member to the required
- format and allocate a buffer for the image.
-
- 4) Call png_image_finish_read to read the image into
- your buffer.
-
-There are no restrictions on the format of the PNG input itself; all valid
-color types, bit depths, and interlace methods are acceptable, and the
-input image is transformed as necessary to the requested in-memory format
-during the png_image_finish_read() step.
-
-To write a PNG file using the simplified API:
-
- 1) Declare a 'png_image' structure on the stack and memset()
- it to all zero.
-
- 2) Initialize the members of the structure that describe the
- image, setting the 'format' member to the format of the
- image in memory.
-
- 3) Call the appropriate png_image_write... function with a
- pointer to the image to write the PNG data.
-
-png_image is a structure that describes the in-memory format of an image
-when it is being read or define the in-memory format of an image that you
-need to write. The "png_image" structure contains the following members:
-
- png_uint_32 version Set to PNG_IMAGE_VERSION
- png_uint_32 width Image width in pixels (columns)
- png_uint_32 height Image height in pixels (rows)
- png_uint_32 format Image format as defined below
- png_uint_32 flags A bit mask containing informational flags
- png_controlp opaque Initialize to NULL, free with png_image_free
- png_uint_32 colormap_entries; Number of entries in the color-map
- png_uint_32 warning_or_error;
- char message[64];
-
-In the event of an error or warning the following field warning_or_error
-field will be set to a non-zero value and the 'message' field will contain
-a '\0' terminated string with the libpng error or warning message. If both
-warnings and an error were encountered, only the error is recorded. If there
-are multiple warnings, only the first one is recorded.
-
-The upper 30 bits of this value are reserved; the low two bits contain
-a two bit code such that a value more than 1 indicates a failure in the API
-just called:
-
- 0 - no warning or error
- 1 - warning
- 2 - error
- 3 - error preceded by warning
-
-The pixels (samples) of the image have one to four channels whose components
-have original values in the range 0 to 1.0:
-
- 1: A single gray or luminance channel (G).
- 2: A gray/luminance channel and an alpha channel (GA).
- 3: Three red, green, blue color channels (RGB).
- 4: Three color channels and an alpha channel (RGBA).
-
-The channels are encoded in one of two ways:
-
- a) As a small integer, value 0..255, contained in a single byte. For the
-alpha channel the original value is simply value/255. For the color or
-luminance channels the value is encoded according to the sRGB specification
-and matches the 8-bit format expected by typical display devices.
-
-The color/gray channels are not scaled (pre-multiplied) by the alpha
-channel and are suitable for passing to color management software.
-
- b) As a value in the range 0..65535, contained in a 2-byte integer. All
-channels can be converted to the original value by dividing by 65535; all
-channels are linear. Color channels use the RGB encoding (RGB end-points) of
-the sRGB specification. This encoding is identified by the
-PNG_FORMAT_FLAG_LINEAR flag below.
-
-When an alpha channel is present it is expected to denote pixel coverage
-of the color or luminance channels and is returned as an associated alpha
-channel: the color/gray channels are scaled (pre-multiplied) by the alpha
-value.
-
-When a color-mapped image is used as a result of calling
-png_image_read_colormap or png_image_write_colormap the channels are encoded
-in the color-map and the descriptions above apply to the color-map entries.
-The image data is encoded as small integers, value 0..255, that index the
-entries in the color-map. One integer (one byte) is stored for each pixel.
-
-PNG_FORMAT_*
-
-The #defines to be used in png_image::format. Each #define identifies a
-particular layout of channel data and, if present, alpha values. There are
-separate defines for each of the two channel encodings.
-
-A format is built up using single bit flag values. Not all combinations are
-valid: use the bit flag values below for testing a format returned by the
-read APIs, but set formats from the derived values.
-
-When reading or writing color-mapped images the format should be set to the
-format of the entries in the color-map then png_image_{read,write}_colormap
-called to read or write the color-map and set the format correctly for the
-image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly!
-
-NOTE: libpng can be built with particular features disabled, if you see
-compiler errors because the definition of one of the following flags has been
-compiled out it is because libpng does not have the required support. It is
-possible, however, for the libpng configuration to enable the format on just
-read or just write; in that case you may see an error at run time. You can
-guard against this by checking for the definition of:
-
- PNG_SIMPLIFIED_{READ,WRITE}_{BGR,AFIRST}_SUPPORTED
-
- PNG_FORMAT_FLAG_ALPHA 0x01 format with an alpha channel
- PNG_FORMAT_FLAG_COLOR 0x02 color format: otherwise grayscale
- PNG_FORMAT_FLAG_LINEAR 0x04 png_uint_16 channels else png_byte
- PNG_FORMAT_FLAG_COLORMAP 0x08 libpng use only
- PNG_FORMAT_FLAG_BGR 0x10 BGR colors, else order is RGB
- PNG_FORMAT_FLAG_AFIRST 0x20 alpha channel comes first
-
-Supported formats are as follows. Future versions of libpng may support more
-formats; for compatibility with older versions simply check if the format
-macro is defined using #ifdef. These defines describe the in-memory layout
-of the components of the pixels of the image.
-
-First the single byte formats:
-
- PNG_FORMAT_GRAY 0
- PNG_FORMAT_GA PNG_FORMAT_FLAG_ALPHA
- PNG_FORMAT_AG (PNG_FORMAT_GA|PNG_FORMAT_FLAG_AFIRST)
- PNG_FORMAT_RGB PNG_FORMAT_FLAG_COLOR
- PNG_FORMAT_BGR (PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_BGR)
- PNG_FORMAT_RGBA (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_ALPHA)
- PNG_FORMAT_ARGB (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_AFIRST)
- PNG_FORMAT_BGRA (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_ALPHA)
- PNG_FORMAT_ABGR (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_AFIRST)
-
-Then the linear 2-byte formats. When naming these "Y" is used to
-indicate a luminance (gray) channel. The component order within the pixel
-is always the same - there is no provision for swapping the order of the
-components in the linear format.
-
- PNG_FORMAT_LINEAR_Y PNG_FORMAT_FLAG_LINEAR
- PNG_FORMAT_LINEAR_Y_ALPHA
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_ALPHA)
- PNG_FORMAT_LINEAR_RGB
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR)
- PNG_FORMAT_LINEAR_RGB_ALPHA
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR|
- PNG_FORMAT_FLAG_ALPHA)
-
-Color-mapped formats are obtained by calling png_image_{read,write}_colormap,
-as appropriate after setting png_image::format to the format of the color-map
-to be read or written. Applications may check the value of
-PNG_FORMAT_FLAG_COLORMAP to see if they have called the colormap API. The
-format of the color-map may be extracted using the following macro.
-
- PNG_FORMAT_OF_COLORMAP(fmt) ((fmt) & ~PNG_FORMAT_FLAG_COLORMAP)
-
-PNG_IMAGE macros
-
-These are convenience macros to derive information from a png_image
-structure. The PNG_IMAGE_SAMPLE_ macros return values appropriate to the
-actual image sample values - either the entries in the color-map or the
-pixels in the image. The PNG_IMAGE_PIXEL_ macros return corresponding values
-for the pixels and will always return 1 after a call to
-png_image_{read,write}_colormap. The remaining macros return information
-about the rows in the image and the complete image.
-
-NOTE: All the macros that take a png_image::format parameter are compile time
-constants if the format parameter is, itself, a constant. Therefore these
-macros can be used in array declarations and case labels where required.
-Similarly the macros are also pre-processor constants (sizeof is not used) so
-they can be used in #if tests.
-
-First the information about the samples.
-
- PNG_IMAGE_SAMPLE_CHANNELS(fmt)
- Returns the total number of channels in a given format: 1..4
-
- PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt)
- Returns the size in bytes of a single component of a pixel or color-map
- entry (as appropriate) in the image.
-
- PNG_IMAGE_SAMPLE_SIZE(fmt)
- This is the size of the sample data for one sample. If the image is
- color-mapped it is the size of one color-map entry (and image pixels are
- one byte in size), otherwise it is the size of one image pixel.
-
- PNG_IMAGE_COLORMAP_SIZE(fmt)
- The size of the color-map required by the format; this is the size of the
- color-map buffer passed to the png_image_{read,write}_colormap APIs, it is
- a fixed number determined by the format so can easily be allocated on the
- stack if necessary.
-
-#define PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(fmt)\
- (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * 256)
- /* The maximum size of the color-map required by the format expressed in a
- * count of components. This can be used to compile-time allocate a
- * color-map:
- *
- * png_uint_16 colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(linear_fmt)];
- *
- * png_byte colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(sRGB_fmt)];
- *
- * Alternatively use the PNG_IMAGE_COLORMAP_SIZE macro below to use the
- * information from one of the png_image_begin_read_ APIs and dynamically
- * allocate the required memory.
- */
-
-
-Corresponding information about the pixels
-
- PNG_IMAGE_PIXEL_(test,fmt)
-
- PNG_IMAGE_PIXEL_CHANNELS(fmt)
- The number of separate channels (components) in a pixel; 1 for a
- color-mapped image.
-
- PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)\
- The size, in bytes, of each component in a pixel; 1 for a color-mapped
- image.
-
- PNG_IMAGE_PIXEL_SIZE(fmt)
- The size, in bytes, of a complete pixel; 1 for a color-mapped image.
-
-Information about the whole row, or whole image
-
- PNG_IMAGE_ROW_STRIDE(image)
- Returns the total number of components in a single row of the image; this
- is the minimum 'row stride', the minimum count of components between each
- row. For a color-mapped image this is the minimum number of bytes in a
- row.
-
- PNG_IMAGE_BUFFER_SIZE(image, row_stride)
- Returns the size, in bytes, of an image buffer given a png_image and a row
- stride - the number of components to leave space for in each row.
-
- PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB == 0x01
- This indicates the the RGB values of the in-memory bitmap do not
- correspond to the red, green and blue end-points defined by sRGB.
-
- PNG_IMAGE_FLAG_COLORMAP == 0x02
- The PNG is color-mapped. If this flag is set png_image_read_colormap
- can be used without further loss of image information. If it is not set
- png_image_read_colormap will cause significant loss if the image has any
-
-READ APIs
-
- The png_image passed to the read APIs must have been initialized by setting
- the png_controlp field 'opaque' to NULL (or, better, memset the whole thing.)
-
- int png_image_begin_read_from_file( png_imagep image,
- const char *file_name)
-
- The named file is opened for read and the image header
- is filled in from the PNG header in the file.
-
- int png_image_begin_read_from_stdio (png_imagep image,
- FILE* file)
-
- The PNG header is read from the stdio FILE object.
-
- int png_image_begin_read_from_memory(png_imagep image,
- png_const_voidp memory, png_size_t size)
-
- The PNG header is read from the given memory buffer.
-
- int png_image_finish_read(png_imagep image,
- png_colorp background, void *buffer,
- png_int_32 row_stride, void *colormap));
-
- Finish reading the image into the supplied buffer and
- clean up the png_image structure.
-
- row_stride is the step, in png_byte or png_uint_16 units
- as appropriate, between adjacent rows. A positive stride
- indicates that the top-most row is first in the buffer -
- the normal top-down arrangement. A negative stride
- indicates that the bottom-most row is first in the buffer.
-
- background need only be supplied if an alpha channel must
- be removed from a png_byte format and the removal is to be
- done by compositing on a solid color; otherwise it may be
- NULL and any composition will be done directly onto the
- buffer. The value is an sRGB color to use for the
- background, for grayscale output the green channel is used.
-
- For linear output removing the alpha channel is always done
- by compositing on black.
-
- void png_image_free(png_imagep image)
-
- Free any data allocated by libpng in image->opaque,
- setting the pointer to NULL. May be called at any time
- after the structure is initialized.
-
-When the simplified API needs to convert between sRGB and linear colorspaces,
-the actual sRGB transfer curve defined in the sRGB specification (see the
-article at http://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2
-approximation used elsewhere in libpng.
-
-WRITE APIS
-
-For write you must initialize a png_image structure to describe the image to
-be written:
-
- version: must be set to PNG_IMAGE_VERSION
- opaque: must be initialized to NULL
- width: image width in pixels
- height: image height in rows
- format: the format of the data you wish to write
- flags: set to 0 unless one of the defined flags applies; set
- PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB for color format images
- where the RGB values do not correspond to the colors in sRGB.
- colormap_entries: set to the number of entries in the color-map (0 to 256)
-
- int png_image_write_to_file, (png_imagep image,
- const char *file, int convert_to_8bit, const void *buffer,
- png_int_32 row_stride, const void *colormap));
-
- Write the image to the named file.
-
- int png_image_write_to_stdio(png_imagep image, FILE *file,
- int convert_to_8_bit, const void *buffer,
- png_int_32 row_stride, const void *colormap)
-
- Write the image to the given (FILE*).
-
-With all write APIs if image is in one of the linear formats with
-(png_uint_16) data then setting convert_to_8_bit will cause the output to be
-a (png_byte) PNG gamma encoded according to the sRGB specification, otherwise
-a 16-bit linear encoded PNG file is written.
-
-With all APIs row_stride is handled as in the read APIs - it is the spacing
-from one row to the next in component sized units (float) and if negative
-indicates a bottom-up row layout in the buffer.
-
-Note that the write API does not support interlacing, sub-8-bit pixels,
-and indexed (paletted) images.
-
-VI. Modifying/Customizing libpng
-
-There are two issues here. The first is changing how libpng does
-standard things like memory allocation, input/output, and error handling.
-The second deals with more complicated things like adding new chunks,
-adding new transformations, and generally changing how libpng works.
-Both of those are compile-time issues; that is, they are generally
-determined at the time the code is written, and there is rarely a need
-to provide the user with a means of changing them.
-
-Memory allocation, input/output, and error handling
-
-All of the memory allocation, input/output, and error handling in libpng
-goes through callbacks that are user-settable. The default routines are
-in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
-these functions, call the appropriate png_set_*_fn() function.
-
-Memory allocation is done through the functions png_malloc(), png_calloc(),
-and png_free(). The png_malloc() and png_free() functions currently just
-call the standard C functions and png_calloc() calls png_malloc() and then
-clears the newly allocated memory to zero; note that png_calloc(png_ptr, size)
-is not the same as the calloc(number, size) function provided by stdlib.h.
-There is limited support for certain systems with segmented memory
-architectures and the types of pointers declared by png.h match this; you
-will have to use appropriate pointers in your application. Since it is
-unlikely that the method of handling memory allocation on a platform
-will change between applications, these functions must be modified in
-the library at compile time. If you prefer to use a different method
-of allocating and freeing data, you can use png_create_read_struct_2() or
-png_create_write_struct_2() to register your own functions as described
-above. These functions also provide a void pointer that can be retrieved
-via
-
- mem_ptr=png_get_mem_ptr(png_ptr);
-
-Your replacement memory functions must have prototypes as follows:
-
- png_voidp malloc_fn(png_structp png_ptr,
- png_alloc_size_t size);
-
- void free_fn(png_structp png_ptr, png_voidp ptr);
-
-Your malloc_fn() must return NULL in case of failure. The png_malloc()
-function will normally call png_error() if it receives a NULL from the
-system memory allocator or from your replacement malloc_fn().
-
-Your free_fn() will never be called with a NULL ptr, since libpng's
-png_free() checks for NULL before calling free_fn().
-
-Input/Output in libpng is done through png_read() and png_write(),
-which currently just call fread() and fwrite(). The FILE * is stored in
-png_struct and is initialized via png_init_io(). If you wish to change
-the method of I/O, the library supplies callbacks that you can set
-through the function png_set_read_fn() and png_set_write_fn() at run
-time, instead of calling the png_init_io() function. These functions
-also provide a void pointer that can be retrieved via the function
-png_get_io_ptr(). For example:
-
- png_set_read_fn(png_structp read_ptr,
- voidp read_io_ptr, png_rw_ptr read_data_fn)
-
- png_set_write_fn(png_structp write_ptr,
- voidp write_io_ptr, png_rw_ptr write_data_fn,
- png_flush_ptr output_flush_fn);
-
- voidp read_io_ptr = png_get_io_ptr(read_ptr);
- voidp write_io_ptr = png_get_io_ptr(write_ptr);
-
-The replacement I/O functions must have prototypes as follows:
-
- void user_read_data(png_structp png_ptr,
- png_bytep data, png_size_t length);
-
- void user_write_data(png_structp png_ptr,
- png_bytep data, png_size_t length);
-
- void user_flush_data(png_structp png_ptr);
-
-The user_read_data() function is responsible for detecting and
-handling end-of-data errors.
-
-Supplying NULL for the read, write, or flush functions sets them back
-to using the default C stream functions, which expect the io_ptr to
-point to a standard *FILE structure. It is probably a mistake
-to use NULL for one of write_data_fn and output_flush_fn but not both
-of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
-It is an error to read from a write stream, and vice versa.
-
-Error handling in libpng is done through png_error() and png_warning().
-Errors handled through png_error() are fatal, meaning that png_error()
-should never return to its caller. Currently, this is handled via
-setjmp() and longjmp() (unless you have compiled libpng with
-PNG_NO_SETJMP, in which case it is handled via PNG_ABORT()),
-but you could change this to do things like exit() if you should wish,
-as long as your function does not return.
-
-On non-fatal errors, png_warning() is called
-to print a warning message, and then control returns to the calling code.
-By default png_error() and png_warning() print a message on stderr via
-fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
-(because you don't want the messages) or PNG_NO_STDIO defined (because
-fprintf() isn't available). If you wish to change the behavior of the error
-functions, you will need to set up your own message callbacks. These
-functions are normally supplied at the time that the png_struct is created.
-It is also possible to redirect errors and warnings to your own replacement
-functions after png_create_*_struct() has been called by calling:
-
- png_set_error_fn(png_structp png_ptr,
- png_voidp error_ptr, png_error_ptr error_fn,
- png_error_ptr warning_fn);
-
- png_voidp error_ptr = png_get_error_ptr(png_ptr);
-
-If NULL is supplied for either error_fn or warning_fn, then the libpng
-default function will be used, calling fprintf() and/or longjmp() if a
-problem is encountered. The replacement error functions should have
-parameters as follows:
-
- void user_error_fn(png_structp png_ptr,
- png_const_charp error_msg);
-
- void user_warning_fn(png_structp png_ptr,
- png_const_charp warning_msg);
-
-The motivation behind using setjmp() and longjmp() is the C++ throw and
-catch exception handling methods. This makes the code much easier to write,
-as there is no need to check every return code of every function call.
-However, there are some uncertainties about the status of local variables
-after a longjmp, so the user may want to be careful about doing anything
-after setjmp returns non-zero besides returning itself. Consult your
-compiler documentation for more details. For an alternative approach, you
-may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net),
-which is illustrated in pngvalid.c and in contrib/visupng.
-
-Beginning in libpng-1.4.0, the png_set_benign_errors() API became available.
-You can use this to handle certain errors (normally handled as errors)
-as warnings.
-
- png_set_benign_errors (png_ptr, int allowed);
-
- allowed: 0: treat png_benign_error() as an error.
- 1: treat png_benign_error() as a warning.
-
-As of libpng-1.6.0, the default condition is to treat benign errors as
-warnings while reading and as errors while writing.
-
-Custom chunks
-
-If you need to read or write custom chunks, you may need to get deeper
-into the libpng code. The library now has mechanisms for storing
-and writing chunks of unknown type; you can even declare callbacks
-for custom chunks. However, this may not be good enough if the
-library code itself needs to know about interactions between your
-chunk and existing `intrinsic' chunks.
-
-If you need to write a new intrinsic chunk, first read the PNG
-specification. Acquire a first level of understanding of how it works.
-Pay particular attention to the sections that describe chunk names,
-and look at how other chunks were designed, so you can do things
-similarly. Second, check out the sections of libpng that read and
-write chunks. Try to find a chunk that is similar to yours and use
-it as a template. More details can be found in the comments inside
-the code. It is best to handle private or unknown chunks in a generic method,
-via callback functions, instead of by modifying libpng functions. This
-is illustrated in pngtest.c, which uses a callback function to handle a
-private "vpAg" chunk and the new "sTER" chunk, which are both unknown to
-libpng.
-
-If you wish to write your own transformation for the data, look through
-the part of the code that does the transformations, and check out some of
-the simpler ones to get an idea of how they work. Try to find a similar
-transformation to the one you want to add and copy off of it. More details
-can be found in the comments inside the code itself.
-
-Configuring for 16-bit platforms
-
-You will want to look into zconf.h to tell zlib (and thus libpng) that
-it cannot allocate more then 64K at a time. Even if you can, the memory
-won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K.
-
-Configuring for DOS
-
-For DOS users who only have access to the lower 640K, you will
-have to limit zlib's memory usage via a png_set_compression_mem_level()
-call. See zlib.h or zconf.h in the zlib library for more information.
-
-Configuring for Medium Model
-
-Libpng's support for medium model has been tested on most of the popular
-compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets
-defined, and FAR gets defined to far in pngconf.h, and you should be
-all set. Everything in the library (except for zlib's structure) is
-expecting far data. You must use the typedefs with the p or pp on
-the end for pointers (or at least look at them and be careful). Make
-note that the rows of data are defined as png_bytepp, which is
-an "unsigned char far * far *".
-
-Configuring for gui/windowing platforms:
-
-You will need to write new error and warning functions that use the GUI
-interface, as described previously, and set them to be the error and
-warning functions at the time that png_create_*_struct() is called,
-in order to have them available during the structure initialization.
-They can be changed later via png_set_error_fn(). On some compilers,
-you may also have to change the memory allocators (png_malloc, etc.).
-
-Configuring for compiler xxx:
-
-All includes for libpng are in pngconf.h. If you need to add, change
-or delete an include, this is the place to do it.
-The includes that are not needed outside libpng are placed in pngpriv.h,
-which is only used by the routines inside libpng itself.
-The files in libpng proper only include pngpriv.h and png.h, which
-in turn includes pngconf.h and, as of libpng-1.5.0, pnglibconf.h.
-As of libpng-1.5.0, pngpriv.h also includes three other private header
-files, pngstruct.h, pnginfo.h, and pngdebug.h, which contain material
-that previously appeared in the public headers.
-
-Configuring zlib:
-
-There are special functions to configure the compression. Perhaps the
-most useful one changes the compression level, which currently uses
-input compression values in the range 0 - 9. The library normally
-uses the default compression level (Z_DEFAULT_COMPRESSION = 6). Tests
-have shown that for a large majority of images, compression values in
-the range 3-6 compress nearly as well as higher levels, and do so much
-faster. For online applications it may be desirable to have maximum speed
-(Z_BEST_SPEED = 1). With versions of zlib after v0.99, you can also
-specify no compression (Z_NO_COMPRESSION = 0), but this would create
-files larger than just storing the raw bitmap. You can specify the
-compression level by calling:
-
- #include zlib.h
- png_set_compression_level(png_ptr, level);
-
-Another useful one is to reduce the memory level used by the library.
-The memory level defaults to 8, but it can be lowered if you are
-short on memory (running DOS, for example, where you only have 640K).
-Note that the memory level does have an effect on compression; among
-other things, lower levels will result in sections of incompressible
-data being emitted in smaller stored blocks, with a correspondingly
-larger relative overhead of up to 15% in the worst case.
-
- #include zlib.h
- png_set_compression_mem_level(png_ptr, level);
-
-The other functions are for configuring zlib. They are not recommended
-for normal use and may result in writing an invalid PNG file. See
-zlib.h for more information on what these mean.
-
- #include zlib.h
- png_set_compression_strategy(png_ptr,
- strategy);
-
- png_set_compression_window_bits(png_ptr,
- window_bits);
-
- png_set_compression_method(png_ptr, method);
-
- png_set_compression_buffer_size(png_ptr, size);
-
-As of libpng version 1.5.4, additional APIs became
-available to set these separately for non-IDAT
-compressed chunks such as zTXt, iTXt, and iCCP:
-
- #include zlib.h
- #if PNG_LIBPNG_VER >= 10504
- png_set_text_compression_level(png_ptr, level);
-
- png_set_text_compression_mem_level(png_ptr, level);
-
- png_set_text_compression_strategy(png_ptr,
- strategy);
-
- png_set_text_compression_window_bits(png_ptr,
- window_bits);
-
- png_set_text_compression_method(png_ptr, method);
- #endif
-
-Controlling row filtering
-
-If you want to control whether libpng uses filtering or not, which
-filters are used, and how it goes about picking row filters, you
-can call one of these functions. The selection and configuration
-of row filters can have a significant impact on the size and
-encoding speed and a somewhat lesser impact on the decoding speed
-of an image. Filtering is enabled by default for RGB and grayscale
-images (with and without alpha), but not for paletted images nor
-for any images with bit depths less than 8 bits/pixel.
-
-The 'method' parameter sets the main filtering method, which is
-currently only '0' in the PNG 1.2 specification. The 'filters'
-parameter sets which filter(s), if any, should be used for each
-scanline. Possible values are PNG_ALL_FILTERS and PNG_NO_FILTERS
-to turn filtering on and off, respectively.
-
-Individual filter types are PNG_FILTER_NONE, PNG_FILTER_SUB,
-PNG_FILTER_UP, PNG_FILTER_AVG, PNG_FILTER_PAETH, which can be bitwise
-ORed together with '|' to specify one or more filters to use.
-These filters are described in more detail in the PNG specification.
-If you intend to change the filter type during the course of writing
-the image, you should start with flags set for all of the filters
-you intend to use so that libpng can initialize its internal
-structures appropriately for all of the filter types. (Note that this
-means the first row must always be adaptively filtered, because libpng
-currently does not allocate the filter buffers until png_write_row()
-is called for the first time.)
-
- filters = PNG_FILTER_NONE | PNG_FILTER_SUB
- PNG_FILTER_UP | PNG_FILTER_AVG |
- PNG_FILTER_PAETH | PNG_ALL_FILTERS;
-
- png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
- filters);
- The second parameter can also be
- PNG_INTRAPIXEL_DIFFERENCING if you are
- writing a PNG to be embedded in a MNG
- datastream. This parameter must be the
- same as the value of filter_method used
- in png_set_IHDR().
-
-It is also possible to influence how libpng chooses from among the
-available filters. This is done in one or both of two ways - by
-telling it how important it is to keep the same filter for successive
-rows, and by telling it the relative computational costs of the filters.
-
- double weights[3] = {1.5, 1.3, 1.1},
- costs[PNG_FILTER_VALUE_LAST] =
- {1.0, 1.3, 1.3, 1.5, 1.7};
-
- png_set_filter_heuristics(png_ptr,
- PNG_FILTER_HEURISTIC_WEIGHTED, 3,
- weights, costs);
-
-The weights are multiplying factors that indicate to libpng that the
-row filter should be the same for successive rows unless another row filter
-is that many times better than the previous filter. In the above example,
-if the previous 3 filters were SUB, SUB, NONE, the SUB filter could have a
-"sum of absolute differences" 1.5 x 1.3 times higher than other filters
-and still be chosen, while the NONE filter could have a sum 1.1 times
-higher than other filters and still be chosen. Unspecified weights are
-taken to be 1.0, and the specified weights should probably be declining
-like those above in order to emphasize recent filters over older filters.
-
-The filter costs specify for each filter type a relative decoding cost
-to be considered when selecting row filters. This means that filters
-with higher costs are less likely to be chosen over filters with lower
-costs, unless their "sum of absolute differences" is that much smaller.
-The costs do not necessarily reflect the exact computational speeds of
-the various filters, since this would unduly influence the final image
-size.
-
-Note that the numbers above were invented purely for this example and
-are given only to help explain the function usage. Little testing has
-been done to find optimum values for either the costs or the weights.
-
-Removing unwanted object code
-
-There are a bunch of #define's in pngconf.h that control what parts of
-libpng are compiled. All the defines end in _SUPPORTED. If you are
-never going to use a capability, you can change the #define to #undef
-before recompiling libpng and save yourself code and data space, or
-you can turn off individual capabilities with defines that begin with
-PNG_NO_.
-
-In libpng-1.5.0 and later, the #define's are in pnglibconf.h instead.
-
-You can also turn all of the transforms and ancillary chunk capabilities
-off en masse with compiler directives that define
-PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
-or all four,
-along with directives to turn on any of the capabilities that you do
-want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
-transformations but still leave the library fully capable of reading
-and writing PNG files with all known public chunks. Use of the
-PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
-that is incapable of reading or writing ancillary chunks. If you are
-not using the progressive reading capability, you can turn that off
-with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
-capability, which you'll still have).
-
-All the reading and writing specific code are in separate files, so the
-linker should only grab the files it needs. However, if you want to
-make sure, or if you are building a stand alone library, all the
-reading files start with "pngr" and all the writing files start with "pngw".
-The files that don't match either (like png.c, pngtrans.c, etc.)
-are used for both reading and writing, and always need to be included.
-The progressive reader is in pngpread.c
-
-If you are creating or distributing a dynamically linked library (a .so
-or DLL file), you should not remove or disable any parts of the library,
-as this will cause applications linked with different versions of the
-library to fail if they call functions not available in your library.
-The size of the library itself should not be an issue, because only
-those sections that are actually used will be loaded into memory.
-
-Requesting debug printout
-
-The macro definition PNG_DEBUG can be used to request debugging
-printout. Set it to an integer value in the range 0 to 3. Higher
-numbers result in increasing amounts of debugging information. The
-information is printed to the "stderr" file, unless another file
-name is specified in the PNG_DEBUG_FILE macro definition.
-
-When PNG_DEBUG > 0, the following functions (macros) become available:
-
- png_debug(level, message)
- png_debug1(level, message, p1)
- png_debug2(level, message, p1, p2)
-
-in which "level" is compared to PNG_DEBUG to decide whether to print
-the message, "message" is the formatted string to be printed,
-and p1 and p2 are parameters that are to be embedded in the string
-according to printf-style formatting directives. For example,
-
- png_debug1(2, "foo=%d", foo);
-
-is expanded to
-
- if (PNG_DEBUG > 2)
- fprintf(PNG_DEBUG_FILE, "foo=%d\n", foo);
-
-When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
-can still use PNG_DEBUG to control your own debugging:
-
- #ifdef PNG_DEBUG
- fprintf(stderr, ...
- #endif
-
-When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
-having level = 0 will be printed. There aren't any such statements in
-this version of libpng, but if you insert some they will be printed.
-
-Prepending a prefix to exported symbols
-
-Starting with libpng-1.6.0, you can configure libpng (when using the
-"configure" script) to prefix all exported symbols by means of the
-configuration option "--with-libpng-prefix=FOO_", where FOO_ can be any
-string beginning with a letter and containing only uppercase
-and lowercase letters, digits, and the underscore (i.e., a C language
-identifier). This creates a set of macros in pnglibconf.h, so this is
-transparent to applications; their function calls get transformed by
-the macros to use the modified names.
-
-VII. MNG support
-
-The MNG specification (available at http://www.libpng.org/pub/mng) allows
-certain extensions to PNG for PNG images that are embedded in MNG datastreams.
-Libpng can support some of these extensions. To enable them, use the
-png_permit_mng_features() function:
-
- feature_set = png_permit_mng_features(png_ptr, mask)
-
- mask is a png_uint_32 containing the bitwise OR of the
- features you want to enable. These include
- PNG_FLAG_MNG_EMPTY_PLTE
- PNG_FLAG_MNG_FILTER_64
- PNG_ALL_MNG_FEATURES
-
- feature_set is a png_uint_32 that is the bitwise AND of
- your mask with the set of MNG features that is
- supported by the version of libpng that you are using.
-
-It is an error to use this function when reading or writing a standalone
-PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
-in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
-and the MHDR and MEND chunks. Libpng does not provide support for these
-or any other MNG chunks; your application must provide its own support for
-them. You may wish to consider using libmng (available at
-http://www.libmng.com) instead.
-
-VIII. Changes to Libpng from version 0.88
-
-It should be noted that versions of libpng later than 0.96 are not
-distributed by the original libpng author, Guy Schalnat, nor by
-Andreas Dilger, who had taken over from Guy during 1996 and 1997, and
-distributed versions 0.89 through 0.96, but rather by another member
-of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
-still alive and well, but they have moved on to other things.
-
-The old libpng functions png_read_init(), png_write_init(),
-png_info_init(), png_read_destroy(), and png_write_destroy() have been
-moved to PNG_INTERNAL in version 0.95 to discourage their use. These
-functions will be removed from libpng version 1.4.0.
-
-The preferred method of creating and initializing the libpng structures is
-via the png_create_read_struct(), png_create_write_struct(), and
-png_create_info_struct() because they isolate the size of the structures
-from the application, allow version error checking, and also allow the
-use of custom error handling routines during the initialization, which
-the old functions do not. The functions png_read_destroy() and
-png_write_destroy() do not actually free the memory that libpng
-allocated for these structs, but just reset the data structures, so they
-can be used instead of png_destroy_read_struct() and
-png_destroy_write_struct() if you feel there is too much system overhead
-allocating and freeing the png_struct for each image read.
-
-Setting the error callbacks via png_set_message_fn() before
-png_read_init() as was suggested in libpng-0.88 is no longer supported
-because this caused applications that do not use custom error functions
-to fail if the png_ptr was not initialized to zero. It is still possible
-to set the error callbacks AFTER png_read_init(), or to change them with
-png_set_error_fn(), which is essentially the same function, but with a new
-name to force compilation errors with applications that try to use the old
-method.
-
-Starting with version 1.0.7, you can find out which version of the library
-you are using at run-time:
-
- png_uint_32 libpng_vn = png_access_version_number();
-
-The number libpng_vn is constructed from the major version, minor
-version with leading zero, and release number with leading zero,
-(e.g., libpng_vn for version 1.0.7 is 10007).
-
-Note that this function does not take a png_ptr, so you can call it
-before you've created one.
-
-You can also check which version of png.h you used when compiling your
-application:
-
- png_uint_32 application_vn = PNG_LIBPNG_VER;
-
-IX. Changes to Libpng from version 1.0.x to 1.2.x
-
-Support for user memory management was enabled by default. To
-accomplish this, the functions png_create_read_struct_2(),
-png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
-png_malloc_default(), and png_free_default() were added.
-
-Support for the iTXt chunk has been enabled by default as of
-version 1.2.41.
-
-Support for certain MNG features was enabled.
-
-Support for numbered error messages was added. However, we never got
-around to actually numbering the error messages. The function
-png_set_strip_error_numbers() was added (Note: the prototype for this
-function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
-builds of libpng-1.2.15. It was restored in libpng-1.2.36).
-
-The png_malloc_warn() function was added at libpng-1.2.3. This issues
-a png_warning and returns NULL instead of aborting when it fails to
-acquire the requested memory allocation.
-
-Support for setting user limits on image width and height was enabled
-by default. The functions png_set_user_limits(), png_get_user_width_max(),
-and png_get_user_height_max() were added at libpng-1.2.6.
-
-The png_set_add_alpha() function was added at libpng-1.2.7.
-
-The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
-Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
-tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
-deprecated.
-
-A number of macro definitions in support of runtime selection of
-assembler code features (especially Intel MMX code support) were
-added at libpng-1.2.0:
-
- PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
- PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
- PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
- PNG_ASM_FLAG_MMX_READ_INTERLACE
- PNG_ASM_FLAG_MMX_READ_FILTER_SUB
- PNG_ASM_FLAG_MMX_READ_FILTER_UP
- PNG_ASM_FLAG_MMX_READ_FILTER_AVG
- PNG_ASM_FLAG_MMX_READ_FILTER_PAETH
- PNG_ASM_FLAGS_INITIALIZED
- PNG_MMX_READ_FLAGS
- PNG_MMX_FLAGS
- PNG_MMX_WRITE_FLAGS
- PNG_MMX_FLAGS
-
-We added the following functions in support of runtime
-selection of assembler code features:
-
- png_get_mmx_flagmask()
- png_set_mmx_thresholds()
- png_get_asm_flags()
- png_get_mmx_bitdepth_threshold()
- png_get_mmx_rowbytes_threshold()
- png_set_asm_flags()
-
-We replaced all of these functions with simple stubs in libpng-1.2.20,
-when the Intel assembler code was removed due to a licensing issue.
-
-These macros are deprecated:
-
- PNG_READ_TRANSFORMS_NOT_SUPPORTED
- PNG_PROGRESSIVE_READ_NOT_SUPPORTED
- PNG_NO_SEQUENTIAL_READ_SUPPORTED
- PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
- PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
- PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
-
-They have been replaced, respectively, by:
-
- PNG_NO_READ_TRANSFORMS
- PNG_NO_PROGRESSIVE_READ
- PNG_NO_SEQUENTIAL_READ
- PNG_NO_WRITE_TRANSFORMS
- PNG_NO_READ_ANCILLARY_CHUNKS
- PNG_NO_WRITE_ANCILLARY_CHUNKS
-
-PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
-deprecated since libpng-1.0.16 and libpng-1.2.6.
-
-The function
- png_check_sig(sig, num)
-was replaced with
- !png_sig_cmp(sig, 0, num)
-It has been deprecated since libpng-0.90.
-
-The function
- png_set_gray_1_2_4_to_8()
-which also expands tRNS to alpha was replaced with
- png_set_expand_gray_1_2_4_to_8()
-which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
-
-X. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
-
-Private libpng prototypes and macro definitions were moved from
-png.h and pngconf.h into a new pngpriv.h header file.
-
-Functions png_set_benign_errors(), png_benign_error(), and
-png_chunk_benign_error() were added.
-
-Support for setting the maximum amount of memory that the application
-will allocate for reading chunks was added, as a security measure.
-The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
-were added to the library.
-
-We implemented support for I/O states by adding png_ptr member io_state
-and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
-
-We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
-input transforms.
-
-Checking for and reporting of errors in the IHDR chunk is more thorough.
-
-Support for global arrays was removed, to improve thread safety.
-
-Some obsolete/deprecated macros and functions have been removed.
-
-Typecasted NULL definitions such as
- #define png_voidp_NULL (png_voidp)NULL
-were eliminated. If you used these in your application, just use
-NULL instead.
-
-The png_struct and info_struct members "trans" and "trans_values" were
-changed to "trans_alpha" and "trans_color", respectively.
-
-The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
-were removed.
-
-The PNG_1_0_X and PNG_1_2_X macros were eliminated.
-
-The PNG_LEGACY_SUPPORTED macro was eliminated.
-
-Many WIN32_WCE #ifdefs were removed.
-
-The functions png_read_init(info_ptr), png_write_init(info_ptr),
-png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
-have been removed. They have been deprecated since libpng-0.95.
-
-The png_permit_empty_plte() was removed. It has been deprecated
-since libpng-1.0.9. Use png_permit_mng_features() instead.
-
-We removed the obsolete stub functions png_get_mmx_flagmask(),
-png_set_mmx_thresholds(), png_get_asm_flags(),
-png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
-png_set_asm_flags(), and png_mmx_supported()
-
-We removed the obsolete png_check_sig(), png_memcpy_check(), and
-png_memset_check() functions. Instead use !png_sig_cmp(), memcpy(),
-and memset(), respectively.
-
-The function png_set_gray_1_2_4_to_8() was removed. It has been
-deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
-png_set_expand_gray_1_2_4_to_8() because the former function also
-expanded any tRNS chunk to an alpha channel.
-
-Macros for png_get_uint_16, png_get_uint_32, and png_get_int_32
-were added and are used by default instead of the corresponding
-functions. Unfortunately,
-from libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
-function) incorrectly returned a value of type png_uint_32.
-
-We changed the prototype for png_malloc() from
- png_malloc(png_structp png_ptr, png_uint_32 size)
-to
- png_malloc(png_structp png_ptr, png_alloc_size_t size)
-
-This also applies to the prototype for the user replacement malloc_fn().
-
-The png_calloc() function was added and is used in place of
-of "png_malloc(); memset();" except in the case in png_read_png()
-where the array consists of pointers; in this case a "for" loop is used
-after the png_malloc() to set the pointers to NULL, to give robust.
-behavior in case the application runs out of memory part-way through
-the process.
-
-We changed the prototypes of png_get_compression_buffer_size() and
-png_set_compression_buffer_size() to work with png_size_t instead of
-png_uint_32.
-
-Support for numbered error messages was removed by default, since we
-never got around to actually numbering the error messages. The function
-png_set_strip_error_numbers() was removed from the library by default.
-
-The png_zalloc() and png_zfree() functions are no longer exported.
-The png_zalloc() function no longer zeroes out the memory that it
-allocates. Applications that called png_zalloc(png_ptr, number, size)
-can call png_calloc(png_ptr, number*size) instead, and can call
-png_free() instead of png_zfree().
-
-Support for dithering was disabled by default in libpng-1.4.0, because
-it has not been well tested and doesn't actually "dither".
-The code was not
-removed, however, and could be enabled by building libpng with
-PNG_READ_DITHER_SUPPORTED defined. In libpng-1.4.2, this support
-was reenabled, but the function was renamed png_set_quantize() to
-reflect more accurately what it actually does. At the same time,
-the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
-PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS, and PNG_READ_DITHER_SUPPORTED
-was renamed to PNG_READ_QUANTIZE_SUPPORTED.
-
-We removed the trailing '.' from the warning and error messages.
-
-XI. Changes to Libpng from version 1.4.x to 1.5.x
-
-From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
-function) incorrectly returned a value of type png_uint_32.
-
-Checking for invalid palette index on read or write was added at libpng
-1.5.10. When an invalid index is found, libpng issues a benign error.
-This is enabled by default because this condition is an error according
-to the PNG specification, Clause 11.3.2, but the error can be ignored in
-each png_ptr with
-
- png_set_check_for_invalid_index(png_ptr, allowed);
-
- allowed - one of
- 0: disable benign error (accept the
- invalid data without warning).
- 1: enable benign error (treat the
- invalid data as an error or a
- warning).
-
-If the error is ignored, or if png_benign_error() treats it as a warning,
-any invalid pixels are decoded as opaque black by the decoder and written
-as-is by the encoder.
-
-Retrieving the maximum palette index found was added at libpng-1.5.15.
-This statement must appear after png_read_png() or png_read_image() while
-reading, and after png_write_png() or png_write_image() while writing.
-
- int max_palette = png_get_palette_max(png_ptr, info_ptr);
-
-This will return the maximum palette index found in the image, or "-1" if
-the palette was not checked, or "0" if no palette was found. Note that this
-does not account for any palette index used by ancillary chunks such as the
-bKGD chunk; you must check those separately to determine the maximum
-palette index actually used.
-
-A. Changes that affect users of libpng
-
-There are no substantial API changes between the non-deprecated parts of
-the 1.4.5 API and the 1.5.0 API; however, the ability to directly access
-members of the main libpng control structures, png_struct and png_info,
-deprecated in earlier versions of libpng, has been completely removed from
-libpng 1.5.
-
-We no longer include zlib.h in png.h. The include statement has been moved
-to pngstruct.h, where it is not accessible by applications. Applications that
-need access to information in zlib.h will need to add the '#include "zlib.h"'
-directive. It does not matter whether this is placed prior to or after
-the '"#include png.h"' directive.
-
-The png_sprintf(), png_strcpy(), and png_strncpy() macros are no longer used
-and were removed.
-
-We moved the png_strlen(), png_memcpy(), png_memset(), and png_memcmp()
-macros into a private header file (pngpriv.h) that is not accessible to
-applications.
-
-In png_get_iCCP, the type of "profile" was changed from png_charpp
-to png_bytepp, and in png_set_iCCP, from png_charp to png_const_bytep.
-
-There are changes of form in png.h, including new and changed macros to
-declare parts of the API. Some API functions with arguments that are
-pointers to data not modified within the function have been corrected to
-declare these arguments with PNG_CONST.
-
-Much of the internal use of C macros to control the library build has also
-changed and some of this is visible in the exported header files, in
-particular the use of macros to control data and API elements visible
-during application compilation may require significant revision to
-application code. (It is extremely rare for an application to do this.)
-
-Any program that compiled against libpng 1.4 and did not use deprecated
-features or access internal library structures should compile and work
-against libpng 1.5, except for the change in the prototype for
-png_get_iCCP() and png_set_iCCP() API functions mentioned above.
-
-libpng 1.5.0 adds PNG_ PASS macros to help in the reading and writing of
-interlaced images. The macros return the number of rows and columns in
-each pass and information that can be used to de-interlace and (if
-absolutely necessary) interlace an image.
-
-libpng 1.5.0 adds an API png_longjmp(png_ptr, value). This API calls
-the application-provided png_longjmp_ptr on the internal, but application
-initialized, longjmp buffer. It is provided as a convenience to avoid
-the need to use the png_jmpbuf macro, which had the unnecessary side
-effect of resetting the internal png_longjmp_ptr value.
-
-libpng 1.5.0 includes a complete fixed point API. By default this is
-present along with the corresponding floating point API. In general the
-fixed point API is faster and smaller than the floating point one because
-the PNG file format used fixed point, not floating point. This applies
-even if the library uses floating point in internal calculations. A new
-macro, PNG_FLOATING_ARITHMETIC_SUPPORTED, reveals whether the library
-uses floating point arithmetic (the default) or fixed point arithmetic
-internally for performance critical calculations such as gamma correction.
-In some cases, the gamma calculations may produce slightly different
-results. This has changed the results in png_rgb_to_gray and in alpha
-composition (png_set_background for example). This applies even if the
-original image was already linear (gamma == 1.0) and, therefore, it is
-not necessary to linearize the image. This is because libpng has *not*
-been changed to optimize that case correctly, yet.
-
-Fixed point support for the sCAL chunk comes with an important caveat;
-the sCAL specification uses a decimal encoding of floating point values
-and the accuracy of PNG fixed point values is insufficient for
-representation of these values. Consequently a "string" API
-(png_get_sCAL_s and png_set_sCAL_s) is the only reliable way of reading
-arbitrary sCAL chunks in the absence of either the floating point API or
-internal floating point calculations.
-
-Applications no longer need to include the optional distribution header
-file pngusr.h or define the corresponding macros during application
-build in order to see the correct variant of the libpng API. From 1.5.0
-application code can check for the corresponding _SUPPORTED macro:
-
-#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
- /* code that uses the inch conversion APIs. */
-#endif
-
-This macro will only be defined if the inch conversion functions have been
-compiled into libpng. The full set of macros, and whether or not support
-has been compiled in, are available in the header file pnglibconf.h.
-This header file is specific to the libpng build. Notice that prior to
-1.5.0 the _SUPPORTED macros would always have the default definition unless
-reset by pngusr.h or by explicit settings on the compiler command line.
-These settings may produce compiler warnings or errors in 1.5.0 because
-of macro redefinition.
-
-From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
-function) incorrectly returned a value of type png_uint_32. libpng 1.5.0
-is consistent with the implementation in 1.4.5 and 1.2.x (where the macro
-did not exist.)
-
-Applications can now choose whether to use these macros or to call the
-corresponding function by defining PNG_USE_READ_MACROS or
-PNG_NO_USE_READ_MACROS before including png.h. Notice that this is
-only supported from 1.5.0 -defining PNG_NO_USE_READ_MACROS prior to 1.5.0
-will lead to a link failure.
-
-Prior to libpng-1.5.4, the zlib compressor used the same set of parameters
-when compressing the IDAT data and textual data such as zTXt and iCCP.
-In libpng-1.5.4 we reinitialized the zlib stream for each type of data.
-We added five png_set_text_*() functions for setting the parameters to
-use with textual data.
-
-Prior to libpng-1.5.4, the PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
-option was off by default, and slightly inaccurate scaling occurred.
-This option can no longer be turned off, and the choice of accurate
-or inaccurate 16-to-8 scaling is by using the new png_set_scale_16_to_8()
-API for accurate scaling or the old png_set_strip_16_to_8() API for simple
-chopping.
-
-Prior to libpng-1.5.4, the png_set_user_limits() function could only be
-used to reduce the width and height limits from the value of
-PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
-that it could be used to override them. Now this function will reduce or
-increase the limits.
-
-Starting in libpng-1.5.10, the user limits can be set en masse with the
-configuration option PNG_SAFE_LIMITS_SUPPORTED. If this option is enabled,
-a set of "safe" limits is applied in pngpriv.h. These can be overridden by
-application calls to png_set_user_limits(), png_set_user_chunk_cache_max(),
-and/or png_set_user_malloc_max() that increase or decrease the limits. Also,
-in libpng-1.5.10 the default width and height limits were increased
-from 1,000,000 to 0x7ffffff (i.e., made unlimited). Therefore, the
-limits are now
- default safe
- png_user_width_max 0x7fffffff 1,000,000
- png_user_height_max 0x7fffffff 1,000,000
- png_user_chunk_cache_max 0 (unlimited) 128
- png_user_chunk_malloc_max 0 (unlimited) 8,000,000
-
-B. Changes to the build and configuration of libpng
-
-Details of internal changes to the library code can be found in the CHANGES
-file and in the GIT repository logs. These will be of no concern to the vast
-majority of library users or builders; however, the few who configure libpng
-to a non-default feature set may need to change how this is done.
-
-There should be no need for library builders to alter build scripts if
-these use the distributed build support - configure or the makefiles -
-however, users of the makefiles may care to update their build scripts
-to build pnglibconf.h where the corresponding makefile does not do so.
-
-Building libpng with a non-default configuration has changed completely.
-The old method using pngusr.h should still work correctly even though the
-way pngusr.h is used in the build has been changed; however, library
-builders will probably want to examine the changes to take advantage of
-new capabilities and to simplify their build system.
-
-B.1 Specific changes to library configuration capabilities
-
-The library now supports a complete fixed point implementation and can
-thus be used on systems that have no floating point support or very
-limited or slow support. Previously gamma correction, an essential part
-of complete PNG support, required reasonably fast floating point.
-
-As part of this the choice of internal implementation has been made
-independent of the choice of fixed versus floating point APIs and all the
-missing fixed point APIs have been implemented.
-
-The exact mechanism used to control attributes of API functions has
-changed. A single set of operating system independent macro definitions
-is used and operating system specific directives are defined in
-pnglibconf.h
-
-As part of this the mechanism used to choose procedure call standards on
-those systems that allow a choice has been changed. At present this only
-affects certain Microsoft (DOS, Windows) and IBM (OS/2) operating systems
-running on Intel processors. As before, PNGAPI is defined where required
-to control the exported API functions; however, two new macros, PNGCBAPI
-and PNGCAPI, are used instead for callback functions (PNGCBAPI) and
-(PNGCAPI) for functions that must match a C library prototype (currently
-only png_longjmp_ptr, which must match the C longjmp function.) The new
-approach is documented in pngconf.h
-
-Despite these changes, libpng 1.5.0 only supports the native C function
-calling standard on those platforms tested so far (__cdecl on Microsoft
-Windows). This is because the support requirements for alternative
-calling conventions seem to no longer exist. Developers who find it
-necessary to set PNG_API_RULE to 1 should advise the mailing list
-(png-mng-implement) of this and library builders who use Openwatcom and
-therefore set PNG_API_RULE to 2 should also contact the mailing list.
-
-A new test program, pngvalid, is provided in addition to pngtest.
-pngvalid validates the arithmetic accuracy of the gamma correction
-calculations and includes a number of validations of the file format.
-A subset of the full range of tests is run when "make check" is done
-(in the 'configure' build.) pngvalid also allows total allocated memory
-usage to be evaluated and performs additional memory overwrite validation.
-
-Many changes to individual feature macros have been made. The following
-are the changes most likely to be noticed by library builders who
-configure libpng:
-
-1) All feature macros now have consistent naming:
-
-#define PNG_NO_feature turns the feature off
-#define PNG_feature_SUPPORTED turns the feature on
-
-pnglibconf.h contains one line for each feature macro which is either:
-
-#define PNG_feature_SUPPORTED
-
-if the feature is supported or:
-
-/*#undef PNG_feature_SUPPORTED*/
-
-if it is not. Library code consistently checks for the 'SUPPORTED' macro.
-It does not, and libpng applications should not, check for the 'NO' macro
-which will not normally be defined even if the feature is not supported.
-The 'NO' macros are only used internally for setting or not setting the
-corresponding 'SUPPORTED' macros.
-
-Compatibility with the old names is provided as follows:
-
-PNG_INCH_CONVERSIONS turns on PNG_INCH_CONVERSIONS_SUPPORTED
-
-And the following definitions disable the corresponding feature:
-
-PNG_SETJMP_NOT_SUPPORTED disables SETJMP
-PNG_READ_TRANSFORMS_NOT_SUPPORTED disables READ_TRANSFORMS
-PNG_NO_READ_COMPOSITED_NODIV disables READ_COMPOSITE_NODIV
-PNG_WRITE_TRANSFORMS_NOT_SUPPORTED disables WRITE_TRANSFORMS
-PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED disables READ_ANCILLARY_CHUNKS
-PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED disables WRITE_ANCILLARY_CHUNKS
-
-Library builders should remove use of the above, inconsistent, names.
-
-2) Warning and error message formatting was previously conditional on
-the STDIO feature. The library has been changed to use the
-CONSOLE_IO feature instead. This means that if CONSOLE_IO is disabled
-the library no longer uses the printf(3) functions, even though the
-default read/write implementations use (FILE) style stdio.h functions.
-
-3) Three feature macros now control the fixed/floating point decisions:
-
-PNG_FLOATING_POINT_SUPPORTED enables the floating point APIs
-
-PNG_FIXED_POINT_SUPPORTED enables the fixed point APIs; however, in
-practice these are normally required internally anyway (because the PNG
-file format is fixed point), therefore in most cases PNG_NO_FIXED_POINT
-merely stops the function from being exported.
-
-PNG_FLOATING_ARITHMETIC_SUPPORTED chooses between the internal floating
-point implementation or the fixed point one. Typically the fixed point
-implementation is larger and slower than the floating point implementation
-on a system that supports floating point; however, it may be faster on a
-system which lacks floating point hardware and therefore uses a software
-emulation.
-
-4) Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the
-functions to read and write ints to be disabled independently of
-PNG_USE_READ_MACROS, which allows libpng to be built with the functions
-even though the default is to use the macros - this allows applications
-to choose at app buildtime whether or not to use macros (previously
-impossible because the functions weren't in the default build.)
-
-B.2 Changes to the configuration mechanism
-
-Prior to libpng-1.5.0 library builders who needed to configure libpng
-had either to modify the exported pngconf.h header file to add system
-specific configuration or had to write feature selection macros into
-pngusr.h and cause this to be included into pngconf.h by defining
-PNG_USER_CONFIG. The latter mechanism had the disadvantage that an
-application built without PNG_USER_CONFIG defined would see the
-unmodified, default, libpng API and thus would probably fail to link.
-
-These mechanisms still work in the configure build and in any makefile
-build that builds pnglibconf.h, although the feature selection macros
-have changed somewhat as described above. In 1.5.0, however, pngusr.h is
-processed only once, when the exported header file pnglibconf.h is built.
-pngconf.h no longer includes pngusr.h, therefore pngusr.h is ignored after the
-build of pnglibconf.h and it is never included in an application build.
-
-The rarely used alternative of adding a list of feature macros to the
-CFLAGS setting in the build also still works; however, the macros will be
-copied to pnglibconf.h and this may produce macro redefinition warnings
-when the individual C files are compiled.
-
-All configuration now only works if pnglibconf.h is built from
-scripts/pnglibconf.dfa. This requires the program awk. Brian Kernighan
-(the original author of awk) maintains C source code of that awk and this
-and all known later implementations (often called by subtly different
-names - nawk and gawk for example) are adequate to build pnglibconf.h.
-The Sun Microsystems (now Oracle) program 'awk' is an earlier version
-and does not work; this may also apply to other systems that have a
-functioning awk called 'nawk'.
-
-Configuration options are now documented in scripts/pnglibconf.dfa. This
-file also includes dependency information that ensures a configuration is
-consistent; that is, if a feature is switched off dependent features are
-also removed. As a recommended alternative to using feature macros in
-pngusr.h a system builder may also define equivalent options in pngusr.dfa
-(or, indeed, any file) and add that to the configuration by setting
-DFA_XTRA to the file name. The makefiles in contrib/pngminim illustrate
-how to do this, and a case where pngusr.h is still required.
-
-XII. Changes to Libpng from version 1.5.x to 1.6.x
-
-A "simplified API" has been added (see documentation in png.h and a simple
-example in contrib/examples/pngtopng.c). The new publicly visible API
-includes the following:
-
- macros:
- PNG_FORMAT_*
- PNG_IMAGE_*
- structures:
- png_control
- png_image
- read functions
- png_image_begin_read_from_file()
- png_image_begin_read_from_stdio()
- png_image_begin_read_from_memory()
- png_image_finish_read()
- png_image_free()
- write functions
- png_image_write_to_file()
- png_image_write_to_stdio()
-
-Starting with libpng-1.6.0, you can configure libpng to prefix all exported
-symbols, using the PNG_PREFIX macro.
-
-We no longer include string.h in png.h. The include statement has been moved
-to pngpriv.h, where it is not accessible by applications. Applications that
-need access to information in string.h must add an '#include <string.h>'
-directive. It does not matter whether this is placed prior to or after
-the '#include "png.h"' directive.
-
-The following API are now DEPRECATED:
- png_info_init_3()
- png_convert_to_rfc1123() which has been replaced
- with png_convert_to_rfc1123_buffer()
- png_data_freer()
- png_malloc_default()
- png_free_default()
- png_reset_zstream()
-
-The following have been removed:
- png_get_io_chunk_name(), which has been replaced
- with png_get_io_chunk_type(). The new
- function returns a 32-bit integer instead of
- a string.
- The png_sizeof(), png_strlen(), png_memcpy(), png_memcmp(), and
- png_memset() macros are no longer used in the libpng sources and
- have been removed. These had already been made invisible to applications
- (i.e., defined in the private pngpriv.h header file) since libpng-1.5.0.
-
-The signatures of many exported functions were changed, such that
- png_structp became png_structrp or png_const_structrp
- png_infop became png_inforp or png_const_inforp
-where "rp" indicates a "restricted pointer".
-
-Error detection in some chunks has improved; in particular the iCCP chunk
-reader now does pretty complete validation of the basic format. Some bad
-profiles that were previously accepted are now rejected, in particular the
-very old broken Microsoft/HP sRGB profile. The PNG spec requirement that
-only grayscale profiles may appear in images with color type 0 or 4 and that
-even if the image only contains gray pixels, only RGB profiles may appear
-in images with color type 2, 3, or 6, is now enforced. The sRGB chunk
-is allowed to appear in images with any color type.
-
-Prior to libpng-1.6.0 a warning would be issued if the iTXt chunk contained
-an empty language field or an empty translated keyword. Both of these
-are allowed by the PNG specification, so these warnings are no longer issued.
-
-The library now issues an error if the application attempts to set a
-transform after it calls png_read_update_info().
-
-The default condition for benign_errors is now to treat benign errors as
-warnings while reading and as errors while writing.
-
-The library now issues a warning if both background processing and RGB to
-gray are used when gamma correction happens. As with previous versions of
-the library the results are numerically very incorrect in this case.
-
-There are some minor arithmetic changes in some transforms such as
-png_set_background(), that might be detected by certain regression tests.
-
-Unknown chunk handling has been improved internally, without any API change.
-This adds more correct option control of the unknown handling, corrects
-a pre-existing bug where the per-chunk 'keep' setting is ignored, and makes
-it possible to skip IDAT chunks in the sequential reader.
-
-The machine-generated configure files are no longer included in branches
-libpng16 and later of the GIT repository. They continue to be included
-in the tarball releases, however.
-
-Libpng-1.6.0 and later use the CMF bytes at the beginning of the IDAT stream
-to set the size of the sliding window for reading instead of using the default
-32-kbyte sliding window size. It was discovered that there are hundreds of PNG
-files in the wild that have incorrect CMF bytes that cause libpng to now issue
-a "too far back" error and reject the file. Libpng-1.6.3 provides a way to
-revert to the libpng-1.5.x behavior (ignoring the CMF bytes and using a
-32-kbyte sliding window), and provides a tool
-(contrib/tools/png-fix-too-far-back) for optimizing the CMF bytes
-correctly.
-
-Libpng-1.6.0 and libpng-1.6.1 wrote uncompressed iTXt chunks with the wrong
-length, which resulted in PNG files that cannot be read beyond the bad iTXt
-chunk. This error was fixed in libpng-1.6.3, and a tool (called
-contrib/tools/png-fix-itxt) has been added to the libpng distribution.
-
-XIII. Detecting libpng
-
-The png_get_io_ptr() function has been present since libpng-0.88, has never
-changed, and is unaffected by conditional compilation macros. It is the
-best choice for use in configure scripts for detecting the presence of any
-libpng version since 0.88. In an autoconf "configure.in" you could use
-
- AC_CHECK_LIB(png, png_get_io_ptr, ...
-
-XV. Source code repository
-
-Since about February 2009, version 1.2.34, libpng has been under "git" source
-control. The git repository was built from old libpng-x.y.z.tar.gz files
-going back to version 0.70. You can access the git repository (read only)
-at
-
- git://git.code.sf.net/p/libpng/code
-
-or you can browse it with a web browser by selecting the "code" button at
-
- https://sourceforge.net/projects/libpng
-
-Patches can be sent to glennrp at users.sourceforge.net or to
-png-mng-implement at lists.sourceforge.net or you can upload them to
-the libpng bug tracker at
-
- http://libpng.sourceforge.net
-
-We also accept patches built from the tar or zip distributions, and
-simple verbal discriptions of bug fixes, reported either to the
-SourceForge bug tracker, to the png-mng-implement at lists.sf.net
-mailing list, or directly to glennrp.
-
-XV. Coding style
-
-Our coding style is similar to the "Allman" style, with curly
-braces on separate lines:
-
- if (condition)
- {
- action;
- }
-
- else if (another condition)
- {
- another action;
- }
-
-The braces can be omitted from simple one-line actions:
-
- if (condition)
- return (0);
-
-We use 3-space indentation, except for continued statements which
-are usually indented the same as the first line of the statement
-plus four more spaces.
-
-For macro definitions we use 2-space indentation, always leaving the "#"
-in the first column.
-
- #ifndef PNG_NO_FEATURE
- # ifndef PNG_FEATURE_SUPPORTED
- # define PNG_FEATURE_SUPPORTED
- # endif
- #endif
-
-Comments appear with the leading "/*" at the same indentation as
-the statement that follows the comment:
-
- /* Single-line comment */
- statement;
-
- /* This is a multiple-line
- * comment.
- */
- statement;
-
-Very short comments can be placed after the end of the statement
-to which they pertain:
-
- statement; /* comment */
-
-We don't use C++ style ("//") comments. We have, however,
-used them in the past in some now-abandoned MMX assembler
-code.
-
-Functions and their curly braces are not indented, and
-exported functions are marked with PNGAPI:
-
- /* This is a public function that is visible to
- * application programmers. It does thus-and-so.
- */
- void PNGAPI
- png_exported_function(png_ptr, png_info, foo)
- {
- body;
- }
-
-The prototypes for all exported functions appear in png.h,
-above the comment that says
-
- /* Maintainer: Put new public prototypes here ... */
-
-We mark all non-exported functions with "/* PRIVATE */"":
-
- void /* PRIVATE */
- png_non_exported_function(png_ptr, png_info, foo)
- {
- body;
- }
-
-The prototypes for non-exported functions (except for those in
-pngtest) appear in
-pngpriv.h
-above the comment that says
-
- /* Maintainer: Put new private prototypes here ^ */
-
-We put a space after the "sizeof" operator and we omit the
-optional parentheses around its argument when the argument
-is an expression, not a type name, and we always enclose the
-sizeof operator, with its argument, in parentheses:
-
- (sizeof (png_uint_32))
- (sizeof array)
-
-Prior to libpng-1.6.0 we used a "png_sizeof()" macro, formatted as
-though it were a function.
-
-To avoid polluting the global namespace, the names of all exported
-functions and variables begin with "png_", and all publicly visible C
-preprocessor macros begin with "PNG". We request that applications that
-use libpng *not* begin any of their own symbols with either of these strings.
-
-We put a space after each comma and after each semicolon
-in "for" statements, and we put spaces before and after each
-C binary operator and after "for" or "while", and before
-"?". We don't put a space between a typecast and the expression
-being cast, nor do we put one between a function name and the
-left parenthesis that follows it:
-
- for (i = 2; i > 0; --i)
- y[i] = a(x) + (int)b;
-
-We prefer #ifdef and #ifndef to #if defined() and #if !defined()
-when there is only one macro being tested. We always use parentheses
-with "defined".
-
-We prefer to express integers that are used as bit masks in hex format,
-with an even number of lower-case hex digits (e.g., 0x00, 0xff, 0x0100).
-
-We prefer to use underscores in variable names rather than camelCase, except
-for a few type names that we inherit from zlib.h.
-
-We do not use the TAB character for indentation in the C sources.
-
-Lines do not exceed 80 characters.
-
-Other rules can be inferred by inspecting the libpng source.
-
-XVI. Y2K Compliance in libpng
-
-July 18, 2013
-
-Since the PNG Development group is an ad-hoc body, we can't make
-an official declaration.
-
-This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.6.3 are Y2K compliant. It is my belief that earlier
-versions were also Y2K compliant.
-
-Libpng only has two year fields. One is a 2-byte unsigned integer
-that will hold years up to 65535. The other, which is deprecated,
-holds the date in text format, and will hold years up to 9999.
-
-The integer is
- "png_uint_16 year" in png_time_struct.
-
-The string is
- "char time_buffer[29]" in png_struct. This is no longer used
-in libpng-1.6.x and will be removed from libpng-1.7.0.
-
-There are seven time-related functions:
-
- png_convert_to_rfc_1123() in png.c
- (formerly png_convert_to_rfc_1152() in error)
- png_convert_from_struct_tm() in pngwrite.c, called
- in pngwrite.c
- png_convert_from_time_t() in pngwrite.c
- png_get_tIME() in pngget.c
- png_handle_tIME() in pngrutil.c, called in pngread.c
- png_set_tIME() in pngset.c
- png_write_tIME() in pngwutil.c, called in pngwrite.c
-
-All appear to handle dates properly in a Y2K environment. The
-png_convert_from_time_t() function calls gmtime() to convert from system
-clock time, which returns (year - 1900), which we properly convert to
-the full 4-digit year. There is a possibility that applications using
-libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
-function, or that they are incorrectly passing only a 2-digit year
-instead of "year - 1900" into the png_convert_from_struct_tm() function,
-but this is not under our control. The libpng documentation has always
-stated that it works with 4-digit years, and the APIs have been
-documented as such.
-
-The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
-integer to hold the year, and can hold years as large as 65535.
-
-zlib, upon which libpng depends, is also Y2K compliant. It contains
-no date-related code.
-
-
- Glenn Randers-Pehrson
- libpng maintainer
- PNG Development Group
+++ /dev/null
-.TH LIBPNG 3 "July 18, 2013"
-.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.3
-.SH SYNOPSIS
-\fB
-#include <png.h>\fP
-
-\fBpng_uint_32 png_access_version_number \fI(void\fP\fB);\fP
-
-\fBvoid png_benign_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
-
-\fBvoid png_build_grayscale_palette (int \fP\fIbit_depth\fP\fB, png_colorp \fIpalette\fP\fB);\fP
-
-\fBpng_voidp png_calloc (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
-
-\fBvoid png_chunk_benign_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
-
-\fBvoid png_chunk_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
-
-\fBvoid png_chunk_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
-
-\fBvoid png_convert_from_struct_tm (png_timep \fP\fIptime\fP\fB, struct tm FAR * \fIttime\fP\fB);\fP
-
-\fBvoid png_convert_from_time_t (png_timep \fP\fIptime\fP\fB, time_t \fIttime\fP\fB);\fP
-
-\fBpng_charp png_convert_to_rfc1123 (png_structp \fP\fIpng_ptr\fP\fB, png_timep \fIptime\fP\fB);\fP
-
-\fBpng_infop png_create_info_struct (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_structp png_create_read_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
-
-\fBpng_structp png_create_read_struct_2 (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
-
-\fBpng_structp png_create_write_struct (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarn_fn\fP\fB);\fP
-
-\fBpng_structp png_create_write_struct_2 (png_const_charp \fP\fIuser_png_ver\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fP\fIwarn_fn\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
-
-\fBvoid png_data_freer (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIfreer\fP\fB, png_uint_32 \fImask)\fP\fB);\fP
-
-\fBvoid png_destroy_info_struct (png_structp \fP\fIpng_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
-
-\fBvoid png_destroy_read_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fP\fIinfo_ptr_ptr\fP\fB, png_infopp \fIend_info_ptr_ptr\fP\fB);\fP
-
-\fBvoid png_destroy_write_struct (png_structpp \fP\fIpng_ptr_ptr\fP\fB, png_infopp \fIinfo_ptr_ptr\fP\fB);\fP
-
-\fBvoid png_err (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_error (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fIerror\fP\fB);\fP
-
-\fBvoid png_free (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
-
-\fBvoid png_free_chunk_list (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_free_default (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fIptr\fP\fB);\fP
-
-\fBvoid png_free_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fInum\fP\fB);\fP
-
-\fBpng_byte png_get_bit_depth (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_bKGD (png_const_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fI*background\fP\fB);\fP
-
-\fBpng_byte png_get_channels (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_cHRM (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*white_x\fP\fB, double \fP\fI*white_y\fP\fB, double \fP\fI*red_x\fP\fB, double \fP\fI*red_y\fP\fB, double \fP\fI*green_x\fP\fB, double \fP\fI*green_y\fP\fB, double \fP\fI*blue_x\fP\fB, double \fI*blue_y\fP\fB);\fP
-
-\fBpng_uint_32 png_get_cHRM_fixed (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*white_x\fP\fB, png_uint_32 \fP\fI*white_y\fP\fB, png_uint_32 \fP\fI*red_x\fP\fB, png_uint_32 \fP\fI*red_y\fP\fB, png_uint_32 \fP\fI*green_x\fP\fB, png_uint_32 \fP\fI*green_y\fP\fB, png_uint_32 \fP\fI*blue_x\fP\fB, png_uint_32 \fI*blue_y\fP\fB);\fP
-
-\fBpng_uint_32 png_get_cHRM_XYZ (png_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, double \fP\fI*red_X\fP\fB, double \fP\fI*red_Y\fP\fB, double \fP\fI*red_Z\fP\fB, double \fP\fI*green_X\fP\fB, double \fP\fI*green_Y\fP\fB, double \fP\fI*green_Z\fP\fB, double \fP\fI*blue_X\fP\fB, double \fP\fI*blue_Y\fP\fB, double \fI*blue_Z\fP\fB);\fP
-
-\fBpng_uint_32 png_get_cHRM_XYZ_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_fixed_point \fP\fI*int_red_X\fP\fB, png_fixed_point \fP\fI*int_red_Y\fP\fB, png_fixed_point \fP\fI*int_red_Z\fP\fB, png_fixed_point \fP\fI*int_green_X\fP\fB, png_fixed_point \fP\fI*int_green_Y\fP\fB, png_fixed_point \fP\fI*int_green_Z\fP\fB, png_fixed_point \fP\fI*int_blue_X\fP\fB, png_fixed_point \fP\fI*int_blue_Y\fP\fB, png_fixed_point \fI*int_blue_Z\fP\fB);\fP
-
-\fBpng_uint_32 png_get_chunk_cache_max (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_alloc_size_t png_get_chunk_malloc_max (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_byte png_get_color_type (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_compression_buffer_size (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_byte png_get_compression_type (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_byte png_get_copyright (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_current_row_number \fI(png_const_structp\fP\fB);\fP
-
-\fBpng_byte png_get_current_pass_number \fI(png_const_structp\fP\fB);\fP
-
-\fBpng_voidp png_get_error_ptr (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_byte png_get_filter_type (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_gAMA (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, double \fI*file_gamma\fP\fB);\fP
-
-\fBpng_uint_32 png_get_gAMA_fixed (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fI*int_file_gamma\fP\fB);\fP
-
-\fBpng_byte png_get_header_ver (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_byte png_get_header_version (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_hIST (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fI*hist\fP\fB);\fP
-
-\fBpng_uint_32 png_get_iCCP (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_charpp \fP\fIname\fP\fB, int \fP\fI*compression_type\fP\fB, png_bytepp \fP\fIprofile\fP\fB, png_uint_32 \fI*proflen\fP\fB);\fP
-
-\fBpng_uint_32 png_get_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*width\fP\fB, png_uint_32 \fP\fI*height\fP\fB, int \fP\fI*bit_depth\fP\fB, int \fP\fI*color_type\fP\fB, int \fP\fI*interlace_type\fP\fB, int \fP\fI*compression_type\fP\fB, int \fI*filter_type\fP\fB);\fP
-
-\fBpng_uint_32 png_get_image_height (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_image_width (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_int_32 png_get_int_32 (png_bytep \fIbuf\fP\fB);\fP
-
-\fBpng_byte png_get_interlace_type (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_io_chunk_type (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_voidp png_get_io_ptr (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_io_state (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_byte png_get_libpng_ver (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_voidp png_get_mem_ptr (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_oFFs (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*offset_x\fP\fB, png_uint_32 \fP\fI*offset_y\fP\fB, int \fI*unit_type\fP\fB);\fP
-
-\fBpng_uint_32 png_get_pCAL (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fI*purpose\fP\fB, png_int_32 \fP\fI*X0\fP\fB, png_int_32 \fP\fI*X1\fP\fB, int \fP\fI*type\fP\fB, int \fP\fI*nparams\fP\fB, png_charp \fP\fI*units\fP\fB, png_charpp \fI*params\fP\fB);\fP
-
-\fBpng_uint_32 png_get_pHYs (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*res_x\fP\fB, png_uint_32 \fP\fI*res_y\fP\fB, int \fI*unit_type\fP\fB);\fP
-
-\fBfloat png_get_pixel_aspect_ratio (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_pHYs_dpi (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fI*res_x\fP\fB, png_uint_32 \fP\fI*res_y\fP\fB, int \fI*unit_type\fP\fB);\fP
-
-\fBpng_fixed_point png_get_pixel_aspect_ratio_fixed (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_pixels_per_inch (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_pixels_per_meter (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_voidp png_get_progressive_ptr (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_PLTE (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fI*palette\fP\fB, int \fI*num_palette\fP\fB);\fP
-
-\fBpng_byte png_get_rgb_to_gray_status (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_rowbytes (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_bytepp png_get_rows (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_sBIT (png_const_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fI*sig_bit\fP\fB);\fP
-
-\fBvoid png_get_sCAL (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, int* \fP\fIunit\fP\fB, double* \fP\fIwidth\fP\fB, double* \fIheight\fP\fB);\fP
-
-\fBvoid png_get_sCAL_fixed (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, int* \fP\fIunit\fP\fB, png_fixed_pointp \fP\fIwidth\fP\fB, png_fixed_pointp \fIheight\fP\fB);\fP
-
-\fBvoid png_get_sCAL_s (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, int* \fP\fIunit\fP\fB, png_charpp \fP\fIwidth\fP\fB, png_charpp \fIheight\fP\fB);\fP
-
-\fBpng_bytep png_get_signature (png_const_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_sPLT (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fI*splt_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_sRGB (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, int \fI*file_srgb_intent\fP\fB);\fP
-
-\fBpng_uint_32 png_get_text (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fI*text_ptr\fP\fB, int \fI*num_text\fP\fB);\fP
-
-\fBpng_uint_32 png_get_tIME (png_const_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fI*mod_time\fP\fB);\fP
-
-\fBpng_uint_32 png_get_tRNS (png_const_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fI*trans_alpha\fP\fB, int \fP\fI*num_trans\fP\fB, png_color_16p \fI*trans_color\fP\fB);\fP
-
-\fB/* This function is really an inline macro. \fI*/
-
-\fBpng_uint_16 png_get_uint_16 (png_bytep \fIbuf\fP\fB);\fP
-
-\fBpng_uint_32 png_get_uint_31 (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIbuf\fP\fB);\fP
-
-\fB/* This function is really an inline macro. \fI*/
-
-\fBpng_uint_32 png_get_uint_32 (png_bytep \fIbuf\fP\fB);\fP
-
-\fBpng_uint_32 png_get_unknown_chunks (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkpp \fIunknowns\fP\fB);\fP
-
-\fBpng_voidp png_get_user_chunk_ptr (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_user_height_max (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_voidp png_get_user_transform_ptr (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_user_width_max (png_const_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_valid (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIflag\fP\fB);\fP
-
-\fBfloat png_get_x_offset_inches (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_fixed_point png_get_x_offset_inches_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_int_32 png_get_x_offset_microns (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_int_32 png_get_x_offset_pixels (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_x_pixels_per_inch (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_get_x_pixels_per_meter (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBfloat png_get_y_offset_inches (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBpng_fixed_point png_get_y_offset_inches_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
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-\fBpng_int_32 png_get_y_offset_microns (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
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-\fBpng_int_32 png_get_y_offset_pixels (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
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-\fBpng_uint_32 png_get_y_pixels_per_inch (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
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-\fBpng_uint_32 png_get_y_pixels_per_meter (png_const_structp \fP\fIpng_ptr\fP\fB, png_const_infop \fIinfo_ptr\fP\fB);\fP
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-\fBint png_handle_as_unknown (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIchunk_name\fP\fB);\fP
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-\fBint png_image_begin_read_from_file (png_imagep \fP\fIimage\fP\fB, const char \fI*file_name\fP\fB);\fP
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-\fBint png_image_begin_read_from_stdio (png_imagep \fP\fIimage\fP\fB, FILE* \fIfile\fP\fB);\fP
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-\fBint, png_image_begin_read_from_memory (png_imagep \fP\fIimage\fP\fB, png_const_voidp \fP\fImemory\fP\fB, png_size_t \fIsize\fP\fB);\fP
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-\fBint png_image_finish_read (png_imagep \fP\fIimage\fP\fB, png_colorp \fP\fIbackground\fP\fB, void \fP\fI*buffer\fP\fB, png_int_32 \fP\fIrow_stride\fP\fB, void \fI*colormap\fP\fB);\fP
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-\fBvoid png_image_free (png_imagep \fIimage\fP\fB);\fP
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-\fBint png_image_write_to_file (png_imagep \fP\fIimage\fP\fB, const char \fP\fI*file\fP\fB, int \fP\fIconvert_to_8bit\fP\fB, const void \fP\fI*buffer\fP\fB, png_int_32 \fP\fIrow_stride\fP\fB, void \fI*colormap\fP\fB);\fP
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-\fBint png_image_write_to_stdio (png_imagep \fP\fIimage\fP\fB, FILE \fP\fI*file\fP\fB, int \fP\fIconvert_to_8_bit\fP\fB, const void \fP\fI*buffer\fP\fB, png_int_32 \fP\fIrow_stride\fP\fB, void \fI*colormap)\fP\fB);\fP
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-\fBvoid png_info_init_3 (png_infopp \fP\fIinfo_ptr\fP\fB, png_size_t \fIpng_info_struct_size\fP\fB);\fP
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-\fBvoid png_init_io (png_structp \fP\fIpng_ptr\fP\fB, FILE \fI*fp\fP\fB);\fP
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-\fBvoid png_longjmp (png_structp \fP\fIpng_ptr\fP\fB, int \fIval\fP\fB);\fP
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-\fBpng_voidp png_malloc (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
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-\fBpng_voidp png_malloc_default (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
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-\fBpng_voidp png_malloc_warn (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIsize\fP\fB);\fP
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-\fBpng_uint_32 png_permit_mng_features (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fImng_features_permitted\fP\fB);\fP
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-\fBvoid png_process_data (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fIbuffer\fP\fB, png_size_t \fIbuffer_size\fP\fB);\fP
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-\fBpng_size_t png_process_data_pause \fP\fI(png_structp\fP\fB, int \fIsave\fP\fB);\fP
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-\fBpng_uint_32 png_process_data_skip \fI(png_structp\fP\fB);\fP
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-\fBvoid png_progressive_combine_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIold_row\fP\fB, png_bytep \fInew_row\fP\fB);\fP
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-\fBvoid png_read_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fBvoid png_read_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
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-\fBvoid png_read_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fBvoid png_read_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
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-\fBvoid png_read_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIrow\fP\fB, png_bytep \fIdisplay_row\fP\fB);\fP
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-\fBvoid png_read_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_bytepp \fP\fIdisplay_row\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
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-\fBvoid png_read_update_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
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-\fBint png_reset_zstream (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_save_int_32 (png_bytep \fP\fIbuf\fP\fB, png_int_32 \fIi\fP\fB);\fP
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-\fBvoid png_save_uint_16 (png_bytep \fP\fIbuf\fP\fB, unsigned int \fIi\fP\fB);\fP
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-\fBvoid png_save_uint_32 (png_bytep \fP\fIbuf\fP\fB, png_uint_32 \fIi\fP\fB);\fP
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-\fBvoid png_set_add_alpha (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
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-\fBvoid png_set_alpha_mode (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImode\fP\fB, double \fIoutput_gamma\fP\fB);\fP
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-\fBvoid png_set_alpha_mode_fixed (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImode\fP\fB, png_fixed_point \fIoutput_gamma\fP\fB);\fP
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-\fBvoid png_set_background (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, double \fIbackground_gamma\fP\fB);\fP
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-\fBvoid png_set_background_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_color_16p \fP\fIbackground_color\fP\fB, int \fP\fIbackground_gamma_code\fP\fB, int \fP\fIneed_expand\fP\fB, png_uint_32 \fIbackground_gamma\fP\fB);\fP
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-\fBvoid png_set_benign_errors (png_structp \fP\fIpng_ptr\fP\fB, int \fIallowed\fP\fB);\fP
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-\fBvoid png_set_bgr (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_bKGD (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_16p \fIbackground\fP\fB);\fP
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-\fBvoid png_set_check_for_invalid_index(png_structrp \fP\fIpng_ptr\fP\fB, int \fIallowed\fP\fB);\fP
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-\fBvoid png_set_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIwhite_x\fP\fB, double \fP\fIwhite_y\fP\fB, double \fP\fIred_x\fP\fB, double \fP\fIred_y\fP\fB, double \fP\fIgreen_x\fP\fB, double \fP\fIgreen_y\fP\fB, double \fP\fIblue_x\fP\fB, double \fIblue_y\fP\fB);\fP
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-\fBvoid png_set_cHRM_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwhite_x\fP\fB, png_uint_32 \fP\fIwhite_y\fP\fB, png_uint_32 \fP\fIred_x\fP\fB, png_uint_32 \fP\fIred_y\fP\fB, png_uint_32 \fP\fIgreen_x\fP\fB, png_uint_32 \fP\fIgreen_y\fP\fB, png_uint_32 \fP\fIblue_x\fP\fB, png_uint_32 \fIblue_y\fP\fB);\fP
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-\fBvoid png_set_cHRM_XYZ (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fP\fIred_X\fP\fB, double \fP\fIred_Y\fP\fB, double \fP\fIred_Z\fP\fB, double \fP\fIgreen_X\fP\fB, double \fP\fIgreen_Y\fP\fB, double \fP\fIgreen_Z\fP\fB, double \fP\fIblue_X\fP\fB, double \fP\fIblue_Y\fP\fB, double \fIblue_Z\fP\fB);\fP
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-\fBvoid png_set_cHRM_XYZ_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_fixed_point \fP\fIint_red_X\fP\fB, png_fixed_point \fP\fIint_red_Y\fP\fB, png_fixed_point \fP\fIint_red_Z\fP\fB, png_fixed_point \fP\fIint_green_X\fP\fB, png_fixed_point \fP\fIint_green_Y\fP\fB, png_fixed_point \fP\fIint_green_Z\fP\fB, png_fixed_point \fP\fIint_blue_X\fP\fB, png_fixed_point \fP\fIint_blue_Y\fP\fB, png_fixed_point \fIint_blue_Z\fP\fB);\fP
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-\fBvoid png_set_chunk_cache_max (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIuser_chunk_cache_max\fP\fB);\fP
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-\fBvoid png_set_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP
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-\fBvoid png_set_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP
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-\fBvoid png_set_compression_method (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod\fP\fB);\fP
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-\fBvoid png_set_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP
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-\fBvoid png_set_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP
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-\fBvoid png_set_crc_action (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIcrit_action\fP\fB, int \fIancil_action\fP\fB);\fP
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-\fBvoid png_set_error_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIerror_ptr\fP\fB, png_error_ptr \fP\fIerror_fn\fP\fB, png_error_ptr \fIwarning_fn\fP\fB);\fP
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-\fBvoid png_set_expand (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_expand_16 (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_expand_gray_1_2_4_to_8 (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_filler (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIfiller\fP\fB, int \fIflags\fP\fB);\fP
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-\fBvoid png_set_filter (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fImethod\fP\fB, int \fIfilters\fP\fB);\fP
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-\fBvoid png_set_filter_heuristics (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIheuristic_method\fP\fB, int \fP\fInum_weights\fP\fB, png_doublep \fP\fIfilter_weights\fP\fB, png_doublep \fIfilter_costs\fP\fB);\fP
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-\fBvoid png_set_filter_heuristics_fixed (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIheuristic_method\fP\fB, int \fP\fInum_weights\fP\fB, png_fixed_point_p \fP\fIfilter_weights\fP\fB, png_fixed_point_p \fIfilter_costs\fP\fB);\fP
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-\fBvoid png_set_flush (png_structp \fP\fIpng_ptr\fP\fB, int \fInrows\fP\fB);\fP
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-\fBvoid png_set_gamma (png_structp \fP\fIpng_ptr\fP\fB, double \fP\fIscreen_gamma\fP\fB, double \fIdefault_file_gamma\fP\fB);\fP
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-\fBvoid png_set_gamma_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIscreen_gamma\fP\fB, png_uint_32 \fIdefault_file_gamma\fP\fB);\fP
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-\fBvoid png_set_gAMA (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, double \fIfile_gamma\fP\fB);\fP
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-\fBvoid png_set_gAMA_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fIfile_gamma\fP\fB);\fP
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-\fBvoid png_set_gray_1_2_4_to_8 (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_gray_to_rgb (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_hIST (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_16p \fIhist\fP\fB);\fP
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-\fBvoid png_set_iCCP (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_const_charp \fP\fIname\fP\fB, int \fP\fIcompression_type\fP\fB, png_const_bytep \fP\fIprofile\fP\fB, png_uint_32 \fIproflen\fP\fB);\fP
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-\fBint png_set_interlace_handling (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_invalid (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fImask\fP\fB);\fP
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-\fBvoid png_set_invert_alpha (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_invert_mono (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_IHDR (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIwidth\fP\fB, png_uint_32 \fP\fIheight\fP\fB, int \fP\fIbit_depth\fP\fB, int \fP\fIcolor_type\fP\fB, int \fP\fIinterlace_type\fP\fB, int \fP\fIcompression_type\fP\fB, int \fIfilter_type\fP\fB);\fP
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-\fBvoid png_set_keep_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIkeep\fP\fB, png_bytep \fP\fIchunk_list\fP\fB, int \fInum_chunks\fP\fB);\fP
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-\fBjmp_buf* png_set_longjmp_fn (png_structp \fP\fIpng_ptr\fP\fB, png_longjmp_ptr \fP\fIlongjmp_fn\fP\fB, size_t \fIjmp_buf_size\fP\fB);\fP
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-\fBvoid png_set_chunk_malloc_max (png_structp \fP\fIpng_ptr\fP\fB, png_alloc_size_t \fIuser_chunk_cache_max\fP\fB);\fP
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-\fBvoid png_set_compression_buffer_size (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIsize\fP\fB);\fP
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-\fBvoid png_set_mem_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fImem_ptr\fP\fB, png_malloc_ptr \fP\fImalloc_fn\fP\fB, png_free_ptr \fIfree_fn\fP\fB);\fP
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-\fBvoid png_set_oFFs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIoffset_x\fP\fB, png_uint_32 \fP\fIoffset_y\fP\fB, int \fIunit_type\fP\fB);\fP
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-\fBvoid png_set_packing (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_packswap (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_palette_to_rgb (png_structp \fIpng_ptr\fP\fB);\fP
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-\fBvoid png_set_pCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_charp \fP\fIpurpose\fP\fB, png_int_32 \fP\fIX0\fP\fB, png_int_32 \fP\fIX1\fP\fB, int \fP\fItype\fP\fB, int \fP\fInparams\fP\fB, png_charp \fP\fIunits\fP\fB, png_charpp \fIparams\fP\fB);\fP
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-\fBvoid png_set_pHYs (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_uint_32 \fP\fIres_x\fP\fB, png_uint_32 \fP\fIres_y\fP\fB, int \fIunit_type\fP\fB);\fP
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-\fBvoid png_set_progressive_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIprogressive_ptr\fP\fB, png_progressive_info_ptr \fP\fIinfo_fn\fP\fB, png_progressive_row_ptr \fP\fIrow_fn\fP\fB, png_progressive_end_ptr \fIend_fn\fP\fB);\fP
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-\fBvoid png_set_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fInum_palette\fP\fB);\fP
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-\fBvoid png_set_quantize (png_structp \fP\fIpng_ptr\fP\fB, png_colorp \fP\fIpalette\fP\fB, int \fP\fInum_palette\fP\fB, int \fP\fImaximum_colors\fP\fB, png_uint_16p \fP\fIhistogram\fP\fB, int \fIfull_quantize\fP\fB);\fP
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-\fBvoid png_set_read_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fIread_data_fn\fP\fB);\fP
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-\fBvoid png_set_read_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_read_status_ptr \fIread_row_fn\fP\fB);\fP
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-\fBvoid png_set_read_user_chunk_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_chunk_ptr\fP\fB, png_user_chunk_ptr \fIread_user_chunk_fn\fP\fB);\fP
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-\fBvoid png_set_read_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIread_user_transform_fn\fP\fB);\fP
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-\fBvoid png_set_rgb_to_gray (png_structp \fP\fIpng_ptr\fP\fB, int \fP\fIerror_action\fP\fB, double \fP\fIred\fP\fB, double \fIgreen\fP\fB);\fP
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-\fBvoid png_set_rgb_to_gray_fixed (png_structp \fP\fIpng_ptr\fP\fB, int error_action png_uint_32 \fP\fIred\fP\fB, png_uint_32 \fIgreen\fP\fB);\fP
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-\fBvoid png_set_rows (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytepp \fIrow_pointers\fP\fB);\fP
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-\fBvoid png_set_sBIT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_color_8p \fIsig_bit\fP\fB);\fP
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-\fBvoid png_set_sCAL (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIunit\fP\fB, double \fP\fIwidth\fP\fB, double \fIheight\fP\fB);\fP
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-\fBvoid png_set_sCAL_fixed (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIunit\fP\fB, png_fixed_point \fP\fIwidth\fP\fB, png_fixed_point \fIheight\fP\fB);\fP
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-\fBvoid png_set_sCAL_s (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIunit\fP\fB, png_charp \fP\fIwidth\fP\fB, png_charp \fIheight\fP\fB);\fP
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-\fBvoid png_set_scale_16 (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_set_shift (png_structp \fP\fIpng_ptr\fP\fB, png_color_8p \fItrue_bits\fP\fB);\fP
-
-\fBvoid png_set_sig_bytes (png_structp \fP\fIpng_ptr\fP\fB, int \fInum_bytes\fP\fB);\fP
-
-\fBvoid png_set_sPLT (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_spalette_p \fP\fIsplt_ptr\fP\fB, int \fInum_spalettes\fP\fB);\fP
-
-\fBvoid png_set_sRGB (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIsrgb_intent\fP\fB);\fP
-
-\fBvoid png_set_sRGB_gAMA_and_cHRM (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fIsrgb_intent\fP\fB);\fP
-
-\fBvoid png_set_strip_16 (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_set_strip_alpha (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_set_strip_error_numbers (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fIstrip_mode\fP\fB);\fP
-
-\fBvoid png_set_swap (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_set_swap_alpha (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_set_text (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_textp \fP\fItext_ptr\fP\fB, int \fInum_text\fP\fB);\fP
-
-\fBvoid png_set_text_compression_level (png_structp \fP\fIpng_ptr\fP\fB, int \fIlevel\fP\fB);\fP
-
-\fBvoid png_set_text_compression_mem_level (png_structp \fP\fIpng_ptr\fP\fB, int \fImem_level\fP\fB);\fP
-
-\fBvoid png_set_text_compression_strategy (png_structp \fP\fIpng_ptr\fP\fB, int \fIstrategy\fP\fB);\fP
-
-\fBvoid png_set_text_compression_window_bits (png_structp \fP\fIpng_ptr\fP\fB, int \fIwindow_bits\fP\fB);\fP
-
-\fBvoid \fP\fIpng_set_text_compression_method\fP\fB, (png_structp \fP\fIpng_ptr\fP\fB, int \fImethod)\fP\fB);\fP
-
-\fBvoid png_set_tIME (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_timep \fImod_time\fP\fB);\fP
-
-\fBvoid png_set_tRNS (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_bytep \fP\fItrans_alpha\fP\fB, int \fP\fInum_trans\fP\fB, png_color_16p \fItrans_color\fP\fB);\fP
-
-\fBvoid png_set_tRNS_to_alpha (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBpng_uint_32 png_set_unknown_chunks (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, png_unknown_chunkp \fP\fIunknowns\fP\fB, int \fP\fInum\fP\fB, int \fIlocation\fP\fB);\fP
-
-\fBvoid png_set_unknown_chunk_location (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fIchunk\fP\fB, int \fIlocation\fP\fB);\fP
-
-\fBvoid png_set_user_limits (png_structp \fP\fIpng_ptr\fP\fB, png_uint_32 \fP\fIuser_width_max\fP\fB, png_uint_32 \fIuser_height_max\fP\fB);\fP
-
-\fBvoid png_set_user_transform_info (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIuser_transform_ptr\fP\fB, int \fP\fIuser_transform_depth\fP\fB, int \fIuser_transform_channels\fP\fB);\fP
-
-\fBvoid png_set_write_fn (png_structp \fP\fIpng_ptr\fP\fB, png_voidp \fP\fIio_ptr\fP\fB, png_rw_ptr \fP\fIwrite_data_fn\fP\fB, png_flush_ptr \fIoutput_flush_fn\fP\fB);\fP
-
-\fBvoid png_set_write_status_fn (png_structp \fP\fIpng_ptr\fP\fB, png_write_status_ptr \fIwrite_row_fn\fP\fB);\fP
-
-\fBvoid png_set_write_user_transform_fn (png_structp \fP\fIpng_ptr\fP\fB, png_user_transform_ptr \fIwrite_user_transform_fn\fP\fB);\fP
-
-\fBint png_sig_cmp (png_bytep \fP\fIsig\fP\fB, png_size_t \fP\fIstart\fP\fB, png_size_t \fInum_to_check\fP\fB);\fP
-
-\fBvoid png_start_read_image (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_warning (png_structp \fP\fIpng_ptr\fP\fB, png_const_charp \fImessage\fP\fB);\fP
-
-\fBvoid png_write_chunk (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
-
-\fBvoid png_write_chunk_data (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIdata\fP\fB, png_size_t \fIlength\fP\fB);\fP
-
-\fBvoid png_write_chunk_end (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_write_chunk_start (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fP\fIchunk_name\fP\fB, png_uint_32 \fIlength\fP\fB);\fP
-
-\fBvoid png_write_end (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBvoid png_write_flush (png_structp \fIpng_ptr\fP\fB);\fP
-
-\fBvoid png_write_image (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fIimage\fP\fB);\fP
-
-\fBvoid png_write_info (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBvoid png_write_info_before_PLTE (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fIinfo_ptr\fP\fB);\fP
-
-\fBvoid png_write_png (png_structp \fP\fIpng_ptr\fP\fB, png_infop \fP\fIinfo_ptr\fP\fB, int \fP\fItransforms\fP\fB, png_voidp \fIparams\fP\fB);\fP
-
-\fBvoid png_write_row (png_structp \fP\fIpng_ptr\fP\fB, png_bytep \fIrow\fP\fB);\fP
-
-\fBvoid png_write_rows (png_structp \fP\fIpng_ptr\fP\fB, png_bytepp \fP\fIrow\fP\fB, png_uint_32 \fInum_rows\fP\fB);\fP
-
-\fBvoid png_write_sig (png_structp \fIpng_ptr\fP\fB);\fP
-
-.SH DESCRIPTION
-The
-.I libpng
-library supports encoding, decoding, and various manipulations of
-the Portable Network Graphics (PNG) format image files. It uses the
-.IR zlib(3)
-compression library.
-Following is a copy of the libpng-manual.txt file that accompanies libpng.
-.SH LIBPNG.TXT
-libpng-manual.txt - A description on how to use and modify libpng
-
- libpng version 1.6.3 - July 18, 2013
- Updated and distributed by Glenn Randers-Pehrson
- <glennrp at users.sourceforge.net>
- Copyright (c) 1998-2013 Glenn Randers-Pehrson
-
- This document is released under the libpng license.
- For conditions of distribution and use, see the disclaimer
- and license in png.h
-
- Based on:
-
- libpng versions 0.97, January 1998, through 1.6.3 - July 18, 2013
- Updated and distributed by Glenn Randers-Pehrson
- Copyright (c) 1998-2013 Glenn Randers-Pehrson
-
- libpng 1.0 beta 6 version 0.96 May 28, 1997
- Updated and distributed by Andreas Dilger
- Copyright (c) 1996, 1997 Andreas Dilger
-
- libpng 1.0 beta 2 - version 0.88 January 26, 1996
- For conditions of distribution and use, see copyright
- notice in png.h. Copyright (c) 1995, 1996 Guy Eric
- Schalnat, Group 42, Inc.
-
- Updated/rewritten per request in the libpng FAQ
- Copyright (c) 1995, 1996 Frank J. T. Wojcik
- December 18, 1995 & January 20, 1996
-
- TABLE OF CONTENTS
-
- I. Introduction
- II. Structures
- III. Reading
- IV. Writing
- V. Simplified API
- VI. Modifying/Customizing libpng
- VII. MNG support
- VIII. Changes to Libpng from version 0.88
- IX. Changes to Libpng from version 1.0.x to 1.2.x
- X. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
- XI. Changes to Libpng from version 1.4.x to 1.5.x
- XII. Changes to Libpng from version 1.5.x to 1.6.x
- XIII. Detecting libpng
- XIV. Source code repository
- XV. Coding style
- XVI. Y2K Compliance in libpng
-
-.SH I. Introduction
-
-This file describes how to use and modify the PNG reference library
-(known as libpng) for your own use. In addition to this
-file, example.c is a good starting point for using the library, as
-it is heavily commented and should include everything most people
-will need. We assume that libpng is already installed; see the
-INSTALL file for instructions on how to install libpng.
-
-For examples of libpng usage, see the files "example.c", "pngtest.c",
-and the files in the "contrib" directory, all of which are included in
-the libpng distribution.
-
-Libpng was written as a companion to the PNG specification, as a way
-of reducing the amount of time and effort it takes to support the PNG
-file format in application programs.
-
-The PNG specification (second edition), November 2003, is available as
-a W3C Recommendation and as an ISO Standard (ISO/IEC 15948:2004 (E)) at
-<http://www.w3.org/TR/2003/REC-PNG-20031110/
-The W3C and ISO documents have identical technical content.
-
-The PNG-1.2 specification is available at
-<http://www.libpng.org/pub/png/documents/>. It is technically equivalent
-to the PNG specification (second edition) but has some additional material.
-
-The PNG-1.0 specification is available
-as RFC 2083 <http://www.libpng.org/pub/png/documents/> and as a
-W3C Recommendation <http://www.w3.org/TR/REC.png.html>.
-
-Some additional chunks are described in the special-purpose public chunks
-documents at <http://www.libpng.org/pub/png/documents/>.
-
-Other information
-about PNG, and the latest version of libpng, can be found at the PNG home
-page, <http://www.libpng.org/pub/png/>.
-
-Most users will not have to modify the library significantly; advanced
-users may want to modify it more. All attempts were made to make it as
-complete as possible, while keeping the code easy to understand.
-Currently, this library only supports C. Support for other languages
-is being considered.
-
-Libpng has been designed to handle multiple sessions at one time,
-to be easily modifiable, to be portable to the vast majority of
-machines (ANSI, K&R, 16-, 32-, and 64-bit) available, and to be easy
-to use. The ultimate goal of libpng is to promote the acceptance of
-the PNG file format in whatever way possible. While there is still
-work to be done (see the TODO file), libpng should cover the
-majority of the needs of its users.
-
-Libpng uses zlib for its compression and decompression of PNG files.
-Further information about zlib, and the latest version of zlib, can
-be found at the zlib home page, <http://www.info-zip.org/pub/infozip/zlib/>.
-The zlib compression utility is a general purpose utility that is
-useful for more than PNG files, and can be used without libpng.
-See the documentation delivered with zlib for more details.
-You can usually find the source files for the zlib utility wherever you
-find the libpng source files.
-
-Libpng is thread safe, provided the threads are using different
-instances of the structures. Each thread should have its own
-png_struct and png_info instances, and thus its own image.
-Libpng does not protect itself against two threads using the
-same instance of a structure.
-
-.SH II. Structures
-
-There are two main structures that are important to libpng, png_struct
-and png_info. Both are internal structures that are no longer exposed
-in the libpng interface (as of libpng 1.5.0).
-
-The png_info structure is designed to provide information about the
-PNG file. At one time, the fields of png_info were intended to be
-directly accessible to the user. However, this tended to cause problems
-with applications using dynamically loaded libraries, and as a result
-a set of interface functions for png_info (the png_get_*() and png_set_*()
-functions) was developed, and direct access to the png_info fields was
-deprecated..
-
-The png_struct structure is the object used by the library to decode a
-single image. As of 1.5.0 this structure is also not exposed.
-
-Almost all libpng APIs require a pointer to a png_struct as the first argument.
-Many (in particular the png_set and png_get APIs) also require a pointer
-to png_info as the second argument. Some application visible macros
-defined in png.h designed for basic data access (reading and writing
-integers in the PNG format) don't take a png_info pointer, but it's almost
-always safe to assume that a (png_struct*) has to be passed to call an API
-function.
-
-You can have more than one png_info structure associated with an image,
-as illustrated in pngtest.c, one for information valid prior to the
-IDAT chunks and another (called "end_info" below) for things after them.
-
-The png.h header file is an invaluable reference for programming with libpng.
-And while I'm on the topic, make sure you include the libpng header file:
-
-#include <png.h>
-
-and also (as of libpng-1.5.0) the zlib header file, if you need it:
-
-#include <zlib.h>
-
-.SS Types
-
-The png.h header file defines a number of integral types used by the
-APIs. Most of these are fairly obvious; for example types corresponding
-to integers of particular sizes and types for passing color values.
-
-One exception is how non-integral numbers are handled. For application
-convenience most APIs that take such numbers have C (double) arguments;
-however, internally PNG, and libpng, use 32 bit signed integers and encode
-the value by multiplying by 100,000. As of libpng 1.5.0 a convenience
-macro PNG_FP_1 is defined in png.h along with a type (png_fixed_point)
-which is simply (png_int_32).
-
-All APIs that take (double) arguments also have a matching API that
-takes the corresponding fixed point integer arguments. The fixed point
-API has the same name as the floating point one with "_fixed" appended.
-The actual range of values permitted in the APIs is frequently less than
-the full range of (png_fixed_point) (-21474 to +21474). When APIs require
-a non-negative argument the type is recorded as png_uint_32 above. Consult
-the header file and the text below for more information.
-
-Special care must be take with sCAL chunk handling because the chunk itself
-uses non-integral values encoded as strings containing decimal floating point
-numbers. See the comments in the header file.
-
-.SS Configuration
-
-The main header file function declarations are frequently protected by C
-preprocessing directives of the form:
-
- #ifdef PNG_feature_SUPPORTED
- declare-function
- #endif
- ...
- #ifdef PNG_feature_SUPPORTED
- use-function
- #endif
-
-The library can be built without support for these APIs, although a
-standard build will have all implemented APIs. Application programs
-should check the feature macros before using an API for maximum
-portability. From libpng 1.5.0 the feature macros set during the build
-of libpng are recorded in the header file "pnglibconf.h" and this file
-is always included by png.h.
-
-If you don't need to change the library configuration from the default, skip to
-the next section ("Reading").
-
-Notice that some of the makefiles in the 'scripts' directory and (in 1.5.0) all
-of the build project files in the 'projects' directory simply copy
-scripts/pnglibconf.h.prebuilt to pnglibconf.h. This means that these build
-systems do not permit easy auto-configuration of the library - they only
-support the default configuration.
-
-The easiest way to make minor changes to the libpng configuration when
-auto-configuration is supported is to add definitions to the command line
-using (typically) CPPFLAGS. For example:
-
-CPPFLAGS=-DPNG_NO_FLOATING_ARITHMETIC
-
-will change the internal libpng math implementation for gamma correction and
-other arithmetic calculations to fixed point, avoiding the need for fast
-floating point support. The result can be seen in the generated pnglibconf.h -
-make sure it contains the changed feature macro setting.
-
-If you need to make more extensive configuration changes - more than one or two
-feature macro settings - you can either add -DPNG_USER_CONFIG to the build
-command line and put a list of feature macro settings in pngusr.h or you can set
-DFA_XTRA (a makefile variable) to a file containing the same information in the
-form of 'option' settings.
-
-A. Changing pnglibconf.h
-
-A variety of methods exist to build libpng. Not all of these support
-reconfiguration of pnglibconf.h. To reconfigure pnglibconf.h it must either be
-rebuilt from scripts/pnglibconf.dfa using awk or it must be edited by hand.
-
-Hand editing is achieved by copying scripts/pnglibconf.h.prebuilt to
-pnglibconf.h and changing the lines defining the supported features, paying
-very close attention to the 'option' information in scripts/pnglibconf.dfa
-that describes those features and their requirements. This is easy to get
-wrong.
-
-B. Configuration using DFA_XTRA
-
-Rebuilding from pnglibconf.dfa is easy if a functioning 'awk', or a later
-variant such as 'nawk' or 'gawk', is available. The configure build will
-automatically find an appropriate awk and build pnglibconf.h.
-The scripts/pnglibconf.mak file contains a set of make rules for doing the
-same thing if configure is not used, and many of the makefiles in the scripts
-directory use this approach.
-
-When rebuilding simply write a new file containing changed options and set
-DFA_XTRA to the name of this file. This causes the build to append the new file
-to the end of scripts/pnglibconf.dfa. The pngusr.dfa file should contain lines
-of the following forms:
-
-everything = off
-
-This turns all optional features off. Include it at the start of pngusr.dfa to
-make it easier to build a minimal configuration. You will need to turn at least
-some features on afterward to enable either reading or writing code, or both.
-
-option feature on
-option feature off
-
-Enable or disable a single feature. This will automatically enable other
-features required by a feature that is turned on or disable other features that
-require a feature which is turned off. Conflicting settings will cause an error
-message to be emitted by awk.
-
-setting feature default value
-
-Changes the default value of setting 'feature' to 'value'. There are a small
-number of settings listed at the top of pnglibconf.h, they are documented in the
-source code. Most of these values have performance implications for the library
-but most of them have no visible effect on the API. Some can also be overridden
-from the API.
-
-This method of building a customized pnglibconf.h is illustrated in
-contrib/pngminim/*. See the "$(PNGCONF):" target in the makefile and
-pngusr.dfa in these directories.
-
-C. Configuration using PNG_USR_CONFIG
-
-If -DPNG_USR_CONFIG is added to the CFLAGS when pnglibconf.h is built the file
-pngusr.h will automatically be included before the options in
-scripts/pnglibconf.dfa are processed. Your pngusr.h file should contain only
-macro definitions turning features on or off or setting settings.
-
-Apart from the global setting "everything = off" all the options listed above
-can be set using macros in pngusr.h:
-
-#define PNG_feature_SUPPORTED
-
-is equivalent to:
-
-option feature on
-
-#define PNG_NO_feature
-
-is equivalent to:
-
-option feature off
-
-#define PNG_feature value
-
-is equivalent to:
-
-setting feature default value
-
-Notice that in both cases, pngusr.dfa and pngusr.h, the contents of the
-pngusr file you supply override the contents of scripts/pnglibconf.dfa
-
-If confusing or incomprehensible behavior results it is possible to
-examine the intermediate file pnglibconf.dfn to find the full set of
-dependency information for each setting and option. Simply locate the
-feature in the file and read the C comments that precede it.
-
-This method is also illustrated in the contrib/pngminim/* makefiles and
-pngusr.h.
-
-.SH III. Reading
-
-We'll now walk you through the possible functions to call when reading
-in a PNG file sequentially, briefly explaining the syntax and purpose
-of each one. See example.c and png.h for more detail. While
-progressive reading is covered in the next section, you will still
-need some of the functions discussed in this section to read a PNG
-file.
-
-.SS Setup
-
-You will want to do the I/O initialization(*) before you get into libpng,
-so if it doesn't work, you don't have much to undo. Of course, you
-will also want to insure that you are, in fact, dealing with a PNG
-file. Libpng provides a simple check to see if a file is a PNG file.
-To use it, pass in the first 1 to 8 bytes of the file to the function
-png_sig_cmp(), and it will return 0 (false) if the bytes match the
-corresponding bytes of the PNG signature, or nonzero (true) otherwise.
-Of course, the more bytes you pass in, the greater the accuracy of the
-prediction.
-
-If you are intending to keep the file pointer open for use in libpng,
-you must ensure you don't read more than 8 bytes from the beginning
-of the file, and you also have to make a call to png_set_sig_bytes_read()
-with the number of bytes you read from the beginning. Libpng will
-then only check the bytes (if any) that your program didn't read.
-
-(*): If you are not using the standard I/O functions, you will need
-to replace them with custom functions. See the discussion under
-Customizing libpng.
-
-
- FILE *fp = fopen(file_name, "rb");
- if (!fp)
- {
- return (ERROR);
- }
-
- fread(header, 1, number, fp);
- is_png = !png_sig_cmp(header, 0, number);
-
- if (!is_png)
- {
- return (NOT_PNG);
- }
-
-
-Next, png_struct and png_info need to be allocated and initialized. In
-order to ensure that the size of these structures is correct even with a
-dynamically linked libpng, there are functions to initialize and
-allocate the structures. We also pass the library version, optional
-pointers to error handling functions, and a pointer to a data struct for
-use by the error functions, if necessary (the pointer and functions can
-be NULL if the default error handlers are to be used). See the section
-on Changes to Libpng below regarding the old initialization functions.
-The structure allocation functions quietly return NULL if they fail to
-create the structure, so your application should check for that.
-
- png_structp png_ptr = png_create_read_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
-
- if (!png_ptr)
- return (ERROR);
-
- png_infop info_ptr = png_create_info_struct(png_ptr);
-
- if (!info_ptr)
- {
- png_destroy_read_struct(&png_ptr,
- (png_infopp)NULL, (png_infopp)NULL);
- return (ERROR);
- }
-
-If you want to use your own memory allocation routines,
-use a libpng that was built with PNG_USER_MEM_SUPPORTED defined, and use
-png_create_read_struct_2() instead of png_create_read_struct():
-
- png_structp png_ptr = png_create_read_struct_2
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn, (png_voidp)
- user_mem_ptr, user_malloc_fn, user_free_fn);
-
-The error handling routines passed to png_create_read_struct()
-and the memory alloc/free routines passed to png_create_struct_2()
-are only necessary if you are not using the libpng supplied error
-handling and memory alloc/free functions.
-
-When libpng encounters an error, it expects to longjmp back
-to your routine. Therefore, you will need to call setjmp and pass
-your png_jmpbuf(png_ptr). If you read the file from different
-routines, you will need to update the longjmp buffer every time you enter
-a new routine that will call a png_*() function.
-
-See your documentation of setjmp/longjmp for your compiler for more
-information on setjmp/longjmp. See the discussion on libpng error
-handling in the Customizing Libpng section below for more information
-on the libpng error handling. If an error occurs, and libpng longjmp's
-back to your setjmp, you will want to call png_destroy_read_struct() to
-free any memory.
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- &end_info);
- fclose(fp);
- return (ERROR);
- }
-
-Pass (png_infopp)NULL instead of &end_info if you didn't create
-an end_info structure.
-
-If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
-errors will result in a call to PNG_ABORT() which defaults to abort().
-
-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
-Now you need to set up the input code. The default for libpng is to
-use the C function fread(). If you use this, you will need to pass a
-valid FILE * in the function png_init_io(). Be sure that the file is
-opened in binary mode. If you wish to handle reading data in another
-way, you need not call the png_init_io() function, but you must then
-implement the libpng I/O methods discussed in the Customizing Libpng
-section below.
-
- png_init_io(png_ptr, fp);
-
-If you had previously opened the file and read any of the signature from
-the beginning in order to see if this was a PNG file, you need to let
-libpng know that there are some bytes missing from the start of the file.
-
- png_set_sig_bytes(png_ptr, number);
-
-You can change the zlib compression buffer size to be used while
-reading compressed data with
-
- png_set_compression_buffer_size(png_ptr, buffer_size);
-
-where the default size is 8192 bytes. Note that the buffer size
-is changed immediately and the buffer is reallocated immediately,
-instead of setting a flag to be acted upon later.
-
-If you want CRC errors to be handled in a different manner than
-the default, use
-
- png_set_crc_action(png_ptr, crit_action, ancil_action);
-
-The values for png_set_crc_action() say how libpng is to handle CRC errors in
-ancillary and critical chunks, and whether to use the data contained
-therein. Note that it is impossible to "discard" data in a critical
-chunk.
-
-Choices for (int) crit_action are
- PNG_CRC_DEFAULT 0 error/quit
- PNG_CRC_ERROR_QUIT 1 error/quit
- PNG_CRC_WARN_USE 3 warn/use data
- PNG_CRC_QUIET_USE 4 quiet/use data
- PNG_CRC_NO_CHANGE 5 use the current value
-
-Choices for (int) ancil_action are
- PNG_CRC_DEFAULT 0 error/quit
- PNG_CRC_ERROR_QUIT 1 error/quit
- PNG_CRC_WARN_DISCARD 2 warn/discard data
- PNG_CRC_WARN_USE 3 warn/use data
- PNG_CRC_QUIET_USE 4 quiet/use data
- PNG_CRC_NO_CHANGE 5 use the current value
-
-.SS Setting up callback code
-
-You can set up a callback function to handle any unknown chunks in the
-input stream. You must supply the function
-
- read_chunk_callback(png_structp png_ptr,
- png_unknown_chunkp chunk);
- {
- /* The unknown chunk structure contains your
- chunk data, along with similar data for any other
- unknown chunks: */
-
- png_byte name[5];
- png_byte *data;
- png_size_t size;
-
- /* Note that libpng has already taken care of
- the CRC handling */
-
- /* put your code here. Search for your chunk in the
- unknown chunk structure, process it, and return one
- of the following: */
-
- return (-n); /* chunk had an error */
- return (0); /* did not recognize */
- return (n); /* success */
- }
-
-(You can give your function another name that you like instead of
-"read_chunk_callback")
-
-To inform libpng about your function, use
-
- png_set_read_user_chunk_fn(png_ptr, user_chunk_ptr,
- read_chunk_callback);
-
-This names not only the callback function, but also a user pointer that
-you can retrieve with
-
- png_get_user_chunk_ptr(png_ptr);
-
-If you call the png_set_read_user_chunk_fn() function, then all unknown
-chunks which the callback does not handle will be saved when read. You can
-cause them to be discarded by returning '1' ("handled") instead of '0'. This
-behavior will change in libpng 1.7 and the default handling set by the
-png_set_keep_unknown_chunks() function, described below, will be used when the
-callback returns 0. If you want the existing behavior you should set the global
-default to PNG_HANDLE_CHUNK_IF_SAFE now; this is compatible with all current
-versions of libpng and with 1.7. Libpng 1.6 issues a warning if you keep the
-default, or PNG_HANDLE_CHUNK_NEVER, and the callback returns 0.
-
-At this point, you can set up a callback function that will be
-called after each row has been read, which you can use to control
-a progress meter or the like. It's demonstrated in pngtest.c.
-You must supply a function
-
- void read_row_callback(png_structp png_ptr,
- png_uint_32 row, int pass);
- {
- /* put your code here */
- }
-
-(You can give it another name that you like instead of "read_row_callback")
-
-To inform libpng about your function, use
-
- png_set_read_status_fn(png_ptr, read_row_callback);
-
-When this function is called the row has already been completely processed and
-the 'row' and 'pass' refer to the next row to be handled. For the
-non-interlaced case the row that was just handled is simply one less than the
-passed in row number, and pass will always be 0. For the interlaced case the
-same applies unless the row value is 0, in which case the row just handled was
-the last one from one of the preceding passes. Because interlacing may skip a
-pass you cannot be sure that the preceding pass is just 'pass-1', if you really
-need to know what the last pass is record (row,pass) from the callback and use
-the last recorded value each time.
-
-As with the user transform you can find the output row using the
-PNG_ROW_FROM_PASS_ROW macro.
-
-.SS Unknown-chunk handling
-
-Now you get to set the way the library processes unknown chunks in the
-input PNG stream. Both known and unknown chunks will be read. Normal
-behavior is that known chunks will be parsed into information in
-various info_ptr members while unknown chunks will be discarded. This
-behavior can be wasteful if your application will never use some known
-chunk types. To change this, you can call:
-
- png_set_keep_unknown_chunks(png_ptr, keep,
- chunk_list, num_chunks);
-
- keep - 0: default unknown chunk handling
- 1: ignore; do not keep
- 2: keep only if safe-to-copy
- 3: keep even if unsafe-to-copy
-
- You can use these definitions:
- PNG_HANDLE_CHUNK_AS_DEFAULT 0
- PNG_HANDLE_CHUNK_NEVER 1
- PNG_HANDLE_CHUNK_IF_SAFE 2
- PNG_HANDLE_CHUNK_ALWAYS 3
-
- chunk_list - list of chunks affected (a byte string,
- five bytes per chunk, NULL or '\0' if
- num_chunks is positive; ignored if
- numchunks <= 0).
-
- num_chunks - number of chunks affected; if 0, all
- unknown chunks are affected. If positive,
- only the chunks in the list are affected,
- and if negative all unknown chunks and
- all known chunks except for the IHDR,
- PLTE, tRNS, IDAT, and IEND chunks are
- affected.
-
-Unknown chunks declared in this way will be saved as raw data onto a
-list of png_unknown_chunk structures. If a chunk that is normally
-known to libpng is named in the list, it will be handled as unknown,
-according to the "keep" directive. If a chunk is named in successive
-instances of png_set_keep_unknown_chunks(), the final instance will
-take precedence. The IHDR and IEND chunks should not be named in
-chunk_list; if they are, libpng will process them normally anyway.
-If you know that your application will never make use of some particular
-chunks, use PNG_HANDLE_CHUNK_NEVER (or 1) as demonstrated below.
-
-Here is an example of the usage of png_set_keep_unknown_chunks(),
-where the private "vpAg" chunk will later be processed by a user chunk
-callback function:
-
- png_byte vpAg[5]={118, 112, 65, 103, (png_byte) '\0'};
-
- #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- png_byte unused_chunks[]=
- {
- 104, 73, 83, 84, (png_byte) '\0', /* hIST */
- 105, 84, 88, 116, (png_byte) '\0', /* iTXt */
- 112, 67, 65, 76, (png_byte) '\0', /* pCAL */
- 115, 67, 65, 76, (png_byte) '\0', /* sCAL */
- 115, 80, 76, 84, (png_byte) '\0', /* sPLT */
- 116, 73, 77, 69, (png_byte) '\0', /* tIME */
- };
- #endif
-
- ...
-
- #if defined(PNG_UNKNOWN_CHUNKS_SUPPORTED)
- /* ignore all unknown chunks
- * (use global setting "2" for libpng16 and earlier):
- */
- png_set_keep_unknown_chunks(read_ptr, 2, NULL, 0);
-
- /* except for vpAg: */
- png_set_keep_unknown_chunks(read_ptr, 2, vpAg, 1);
-
- /* also ignore unused known chunks: */
- png_set_keep_unknown_chunks(read_ptr, 1, unused_chunks,
- (int)(sizeof unused_chunks)/5);
- #endif
-
-.SS User limits
-
-The PNG specification allows the width and height of an image to be as
-large as 2^31-1 (0x7fffffff), or about 2.147 billion rows and columns.
-Since very few applications really need to process such large images,
-we have imposed an arbitrary 1-million limit on rows and columns.
-Larger images will be rejected immediately with a png_error() call. If
-you wish to change this limit, you can use
-
- png_set_user_limits(png_ptr, width_max, height_max);
-
-to set your own limits, or use width_max = height_max = 0x7fffffffL
-to allow all valid dimensions (libpng may reject some very large images
-anyway because of potential buffer overflow conditions).
-
-You should put this statement after you create the PNG structure and
-before calling png_read_info(), png_read_png(), or png_process_data().
-
-When writing a PNG datastream, put this statement before calling
-png_write_info() or png_write_png().
-
-If you need to retrieve the limits that are being applied, use
-
- width_max = png_get_user_width_max(png_ptr);
- height_max = png_get_user_height_max(png_ptr);
-
-The PNG specification sets no limit on the number of ancillary chunks
-allowed in a PNG datastream. You can impose a limit on the total number
-of sPLT, tEXt, iTXt, zTXt, and unknown chunks that will be stored, with
-
- png_set_chunk_cache_max(png_ptr, user_chunk_cache_max);
-
-where 0x7fffffffL means unlimited. You can retrieve this limit with
-
- chunk_cache_max = png_get_chunk_cache_max(png_ptr);
-
-You can also set a limit on the amount of memory that a compressed chunk
-other than IDAT can occupy, with
-
- png_set_chunk_malloc_max(png_ptr, user_chunk_malloc_max);
-
-and you can retrieve the limit with
-
- chunk_malloc_max = png_get_chunk_malloc_max(png_ptr);
-
-Any chunks that would cause either of these limits to be exceeded will
-be ignored.
-
-.SS Information about your system
-
-If you intend to display the PNG or to incorporate it in other image data you
-need to tell libpng information about your display or drawing surface so that
-libpng can convert the values in the image to match the display.
-
-From libpng-1.5.4 this information can be set before reading the PNG file
-header. In earlier versions png_set_gamma() existed but behaved incorrectly if
-called before the PNG file header had been read and png_set_alpha_mode() did not
-exist.
-
-If you need to support versions prior to libpng-1.5.4 test the version number
-as illustrated below using "PNG_LIBPNG_VER >= 10504" and follow the procedures
-described in the appropriate manual page.
-
-You give libpng the encoding expected by your system expressed as a 'gamma'
-value. You can also specify a default encoding for the PNG file in
-case the required information is missing from the file. By default libpng
-assumes that the PNG data matches your system, to keep this default call:
-
- png_set_gamma(png_ptr, screen_gamma, 1/screen_gamma/*file gamma*/);
-
-or you can use the fixed point equivalent:
-
- png_set_gamma_fixed(png_ptr, PNG_FP_1*screen_gamma,
- PNG_FP_1/screen_gamma);
-
-If you don't know the gamma for your system it is probably 2.2 - a good
-approximation to the IEC standard for display systems (sRGB). If images are
-too contrasty or washed out you got the value wrong - check your system
-documentation!
-
-Many systems permit the system gamma to be changed via a lookup table in the
-display driver, a few systems, including older Macs, change the response by
-default. As of 1.5.4 three special values are available to handle common
-situations:
-
- PNG_DEFAULT_sRGB: Indicates that the system conforms to the
- IEC 61966-2-1 standard. This matches almost
- all systems.
- PNG_GAMMA_MAC_18: Indicates that the system is an older
- (pre Mac OS 10.6) Apple Macintosh system with
- the default settings.
- PNG_GAMMA_LINEAR: Just the fixed point value for 1.0 - indicates
- that the system expects data with no gamma
- encoding.
-
-You would use the linear (unencoded) value if you need to process the pixel
-values further because this avoids the need to decode and reencode each
-component value whenever arithmetic is performed. A lot of graphics software
-uses linear values for this reason, often with higher precision component values
-to preserve overall accuracy.
-
-The second thing you may need to tell libpng about is how your system handles
-alpha channel information. Some, but not all, PNG files contain an alpha
-channel. To display these files correctly you need to compose the data onto a
-suitable background, as described in the PNG specification.
-
-Libpng only supports composing onto a single color (using png_set_background;
-see below). Otherwise you must do the composition yourself and, in this case,
-you may need to call png_set_alpha_mode:
-
- #if PNG_LIBPNG_VER >= 10504
- png_set_alpha_mode(png_ptr, mode, screen_gamma);
- #else
- png_set_gamma(png_ptr, screen_gamma, 1.0/screen_gamma);
- #endif
-
-The screen_gamma value is the same as the argument to png_set_gamma; however,
-how it affects the output depends on the mode. png_set_alpha_mode() sets the
-file gamma default to 1/screen_gamma, so normally you don't need to call
-png_set_gamma. If you need different defaults call png_set_gamma() before
-png_set_alpha_mode() - if you call it after it will override the settings made
-by png_set_alpha_mode().
-
-The mode is as follows:
-
- PNG_ALPHA_PNG: The data is encoded according to the PNG specification. Red,
-green and blue, or gray, components are gamma encoded color
-values and are not premultiplied by the alpha value. The
-alpha value is a linear measure of the contribution of the
-pixel to the corresponding final output pixel.
-
-You should normally use this format if you intend to perform
-color correction on the color values; most, maybe all, color
-correction software has no handling for the alpha channel and,
-anyway, the math to handle pre-multiplied component values is
-unnecessarily complex.
-
-Before you do any arithmetic on the component values you need
-to remove the gamma encoding and multiply out the alpha
-channel. See the PNG specification for more detail. It is
-important to note that when an image with an alpha channel is
-scaled, linear encoded, pre-multiplied component values must
-be used!
-
-The remaining modes assume you don't need to do any further color correction or
-that if you do, your color correction software knows all about alpha (it
-probably doesn't!)
-
- PNG_ALPHA_STANDARD: The data libpng produces
-is encoded in the standard way
-assumed by most correctly written graphics software.
-The gamma encoding will be removed by libpng and the
-linear component values will be pre-multiplied by the
-alpha channel.
-
-With this format the final image must be re-encoded to
-match the display gamma before the image is displayed.
-If your system doesn't do that, yet still seems to
-perform arithmetic on the pixels without decoding them,
-it is broken - check out the modes below.
-
-With PNG_ALPHA_STANDARD libpng always produces linear
-component values, whatever screen_gamma you supply. The
-screen_gamma value is, however, used as a default for
-the file gamma if the PNG file has no gamma information.
-
-If you call png_set_gamma() after png_set_alpha_mode() you
-will override the linear encoding. Instead the
-pre-multiplied pixel values will be gamma encoded but
-the alpha channel will still be linear. This may
-actually match the requirements of some broken software,
-but it is unlikely.
-
-While linear 8-bit data is often used it has
-insufficient precision for any image with a reasonable
-dynamic range. To avoid problems, and if your software
-supports it, use png_set_expand_16() to force all
-components to 16 bits.
-
- PNG_ALPHA_OPTIMIZED: This mode is the same
-as PNG_ALPHA_STANDARD except that
-completely opaque pixels are gamma encoded according to
-the screen_gamma value. Pixels with alpha less than 1.0
-will still have linear components.
-
-Use this format if you have control over your
-compositing software and so don't do other arithmetic
-(such as scaling) on the data you get from libpng. Your
-compositing software can simply copy opaque pixels to
-the output but still has linear values for the
-non-opaque pixels.
-
-In normal compositing, where the alpha channel encodes
-partial pixel coverage (as opposed to broad area
-translucency), the inaccuracies of the 8-bit
-representation of non-opaque pixels are irrelevant.
-
-You can also try this format if your software is broken;
-it might look better.
-
- PNG_ALPHA_BROKEN: This is PNG_ALPHA_STANDARD;
-however, all component values,
-including the alpha channel are gamma encoded. This is
-an appropriate format to try if your software, or more
-likely hardware, is totally broken, i.e., if it performs
-linear arithmetic directly on gamma encoded values.
-
-In most cases of broken software or hardware the bug in the final display
-manifests as a subtle halo around composited parts of the image. You may not
-even perceive this as a halo; the composited part of the image may simply appear
-separate from the background, as though it had been cut out of paper and pasted
-on afterward.
-
-If you don't have to deal with bugs in software or hardware, or if you can fix
-them, there are three recommended ways of using png_set_alpha_mode():
-
- png_set_alpha_mode(png_ptr, PNG_ALPHA_PNG,
- screen_gamma);
-
-You can do color correction on the result (libpng does not currently
-support color correction internally). When you handle the alpha channel
-you need to undo the gamma encoding and multiply out the alpha.
-
- png_set_alpha_mode(png_ptr, PNG_ALPHA_STANDARD,
- screen_gamma);
- png_set_expand_16(png_ptr);
-
-If you are using the high level interface, don't call png_set_expand_16();
-instead pass PNG_TRANSFORM_EXPAND_16 to the interface.
-
-With this mode you can't do color correction, but you can do arithmetic,
-including composition and scaling, on the data without further processing.
-
- png_set_alpha_mode(png_ptr, PNG_ALPHA_OPTIMIZED,
- screen_gamma);
-
-You can avoid the expansion to 16-bit components with this mode, but you
-lose the ability to scale the image or perform other linear arithmetic.
-All you can do is compose the result onto a matching output. Since this
-mode is libpng-specific you also need to write your own composition
-software.
-
-If you don't need, or can't handle, the alpha channel you can call
-png_set_background() to remove it by compositing against a fixed color. Don't
-call png_set_strip_alpha() to do this - it will leave spurious pixel values in
-transparent parts of this image.
-
- png_set_background(png_ptr, &background_color,
- PNG_BACKGROUND_GAMMA_SCREEN, 0, 1);
-
-The background_color is an RGB or grayscale value according to the data format
-libpng will produce for you. Because you don't yet know the format of the PNG
-file, if you call png_set_background at this point you must arrange for the
-format produced by libpng to always have 8-bit or 16-bit components and then
-store the color as an 8-bit or 16-bit color as appropriate. The color contains
-separate gray and RGB component values, so you can let libpng produce gray or
-RGB output according to the input format, but low bit depth grayscale images
-must always be converted to at least 8-bit format. (Even though low bit depth
-grayscale images can't have an alpha channel they can have a transparent
-color!)
-
-You set the transforms you need later, either as flags to the high level
-interface or libpng API calls for the low level interface. For reference the
-settings and API calls required are:
-
-8-bit values:
- PNG_TRANSFORM_SCALE_16 | PNG_EXPAND
- png_set_expand(png_ptr); png_set_scale_16(png_ptr);
-
- If you must get exactly the same inaccurate results
- produced by default in versions prior to libpng-1.5.4,
- use PNG_TRANSFORM_STRIP_16 and png_set_strip_16(png_ptr)
- instead.
-
-16-bit values:
- PNG_TRANSFORM_EXPAND_16
- png_set_expand_16(png_ptr);
-
-In either case palette image data will be expanded to RGB. If you just want
-color data you can add PNG_TRANSFORM_GRAY_TO_RGB or png_set_gray_to_rgb(png_ptr)
-to the list.
-
-Calling png_set_background before the PNG file header is read will not work
-prior to libpng-1.5.4. Because the failure may result in unexpected warnings or
-errors it is therefore much safer to call png_set_background after the head has
-been read. Unfortunately this means that prior to libpng-1.5.4 it cannot be
-used with the high level interface.
-
-.SS The high-level read interface
-
-At this point there are two ways to proceed; through the high-level
-read interface, or through a sequence of low-level read operations.
-You can use the high-level interface if (a) you are willing to read
-the entire image into memory, and (b) the input transformations
-you want to do are limited to the following set:
-
- PNG_TRANSFORM_IDENTITY No transformation
- PNG_TRANSFORM_SCALE_16 Strip 16-bit samples to
- 8-bit accurately
- PNG_TRANSFORM_STRIP_16 Chop 16-bit samples to
- 8-bit less accurately
- PNG_TRANSFORM_STRIP_ALPHA Discard the alpha channel
- PNG_TRANSFORM_PACKING Expand 1, 2 and 4-bit
- samples to bytes
- PNG_TRANSFORM_PACKSWAP Change order of packed
- pixels to LSB first
- PNG_TRANSFORM_EXPAND Perform set_expand()
- PNG_TRANSFORM_INVERT_MONO Invert monochrome images
- PNG_TRANSFORM_SHIFT Normalize pixels to the
- sBIT depth
- PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
- to BGRA
- PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
- to AG
- PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
- to transparency
- PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
- PNG_TRANSFORM_GRAY_TO_RGB Expand grayscale samples
- to RGB (or GA to RGBA)
- PNG_TRANSFORM_EXPAND_16 Expand samples to 16 bits
-
-(This excludes setting a background color, doing gamma transformation,
-quantizing, and setting filler.) If this is the case, simply do this:
-
- png_read_png(png_ptr, info_ptr, png_transforms, NULL)
-
-where png_transforms is an integer containing the bitwise OR of some
-set of transformation flags. This call is equivalent to png_read_info(),
-followed the set of transformations indicated by the transform mask,
-then png_read_image(), and finally png_read_end().
-
-(The final parameter of this call is not yet used. Someday it might point
-to transformation parameters required by some future input transform.)
-
-You must use png_transforms and not call any png_set_transform() functions
-when you use png_read_png().
-
-After you have called png_read_png(), you can retrieve the image data
-with
-
- row_pointers = png_get_rows(png_ptr, info_ptr);
-
-where row_pointers is an array of pointers to the pixel data for each row:
-
- png_bytep row_pointers[height];
-
-If you know your image size and pixel size ahead of time, you can allocate
-row_pointers prior to calling png_read_png() with
-
- if (height > PNG_UINT_32_MAX/(sizeof (png_byte)))
- png_error (png_ptr,
- "Image is too tall to process in memory");
-
- if (width > PNG_UINT_32_MAX/pixel_size)
- png_error (png_ptr,
- "Image is too wide to process in memory");
-
- row_pointers = png_malloc(png_ptr,
- height*(sizeof (png_bytep)));
-
- for (int i=0; i<height, i++)
- row_pointers[i]=NULL; /* security precaution */
-
- for (int i=0; i<height, i++)
- row_pointers[i]=png_malloc(png_ptr,
- width*pixel_size);
-
- png_set_rows(png_ptr, info_ptr, &row_pointers);
-
-Alternatively you could allocate your image in one big block and define
-row_pointers[i] to point into the proper places in your block.
-
-If you use png_set_rows(), the application is responsible for freeing
-row_pointers (and row_pointers[i], if they were separately allocated).
-
-If you don't allocate row_pointers ahead of time, png_read_png() will
-do it, and it'll be free'ed by libpng when you call png_destroy_*().
-
-.SS The low-level read interface
-
-If you are going the low-level route, you are now ready to read all
-the file information up to the actual image data. You do this with a
-call to png_read_info().
-
- png_read_info(png_ptr, info_ptr);
-
-This will process all chunks up to but not including the image data.
-
-This also copies some of the data from the PNG file into the decode structure
-for use in later transformations. Important information copied in is:
-
-1) The PNG file gamma from the gAMA chunk. This overwrites the default value
-provided by an earlier call to png_set_gamma or png_set_alpha_mode.
-
-2) Prior to libpng-1.5.4 the background color from a bKGd chunk. This
-damages the information provided by an earlier call to png_set_background
-resulting in unexpected behavior. Libpng-1.5.4 no longer does this.
-
-3) The number of significant bits in each component value. Libpng uses this to
-optimize gamma handling by reducing the internal lookup table sizes.
-
-4) The transparent color information from a tRNS chunk. This can be modified by
-a later call to png_set_tRNS.
-
-.SS Querying the info structure
-
-Functions are used to get the information from the info_ptr once it
-has been read. Note that these fields may not be completely filled
-in until png_read_end() has read the chunk data following the image.
-
- png_get_IHDR(png_ptr, info_ptr, &width, &height,
- &bit_depth, &color_type, &interlace_type,
- &compression_type, &filter_method);
-
- width - holds the width of the image
- in pixels (up to 2^31).
-
- height - holds the height of the image
- in pixels (up to 2^31).
-
- bit_depth - holds the bit depth of one of the
- image channels. (valid values are
- 1, 2, 4, 8, 16 and depend also on
- the color_type. See also
- significant bits (sBIT) below).
-
- color_type - describes which color/alpha channels
- are present.
- PNG_COLOR_TYPE_GRAY
- (bit depths 1, 2, 4, 8, 16)
- PNG_COLOR_TYPE_GRAY_ALPHA
- (bit depths 8, 16)
- PNG_COLOR_TYPE_PALETTE
- (bit depths 1, 2, 4, 8)
- PNG_COLOR_TYPE_RGB
- (bit_depths 8, 16)
- PNG_COLOR_TYPE_RGB_ALPHA
- (bit_depths 8, 16)
-
- PNG_COLOR_MASK_PALETTE
- PNG_COLOR_MASK_COLOR
- PNG_COLOR_MASK_ALPHA
-
- interlace_type - (PNG_INTERLACE_NONE or
- PNG_INTERLACE_ADAM7)
-
- compression_type - (must be PNG_COMPRESSION_TYPE_BASE
- for PNG 1.0)
-
- filter_method - (must be PNG_FILTER_TYPE_BASE
- for PNG 1.0, and can also be
- PNG_INTRAPIXEL_DIFFERENCING if
- the PNG datastream is embedded in
- a MNG-1.0 datastream)
-
- Any or all of interlace_type, compression_type, or
- filter_method can be NULL if you are
- not interested in their values.
-
- Note that png_get_IHDR() returns 32-bit data into
- the application's width and height variables.
- This is an unsafe situation if these are 16-bit
- variables. In such situations, the
- png_get_image_width() and png_get_image_height()
- functions described below are safer.
-
- width = png_get_image_width(png_ptr,
- info_ptr);
-
- height = png_get_image_height(png_ptr,
- info_ptr);
-
- bit_depth = png_get_bit_depth(png_ptr,
- info_ptr);
-
- color_type = png_get_color_type(png_ptr,
- info_ptr);
-
- interlace_type = png_get_interlace_type(png_ptr,
- info_ptr);
-
- compression_type = png_get_compression_type(png_ptr,
- info_ptr);
-
- filter_method = png_get_filter_type(png_ptr,
- info_ptr);
-
- channels = png_get_channels(png_ptr, info_ptr);
-
- channels - number of channels of info for the
- color type (valid values are 1 (GRAY,
- PALETTE), 2 (GRAY_ALPHA), 3 (RGB),
- 4 (RGB_ALPHA or RGB + filler byte))
-
- rowbytes = png_get_rowbytes(png_ptr, info_ptr);
-
- rowbytes - number of bytes needed to hold a row
-
- signature = png_get_signature(png_ptr, info_ptr);
-
- signature - holds the signature read from the
- file (if any). The data is kept in
- the same offset it would be if the
- whole signature were read (i.e. if an
- application had already read in 4
- bytes of signature before starting
- libpng, the remaining 4 bytes would
- be in signature[4] through signature[7]
- (see png_set_sig_bytes())).
-
-These are also important, but their validity depends on whether the chunk
-has been read. The png_get_valid(png_ptr, info_ptr, PNG_INFO_<chunk>) and
-png_get_<chunk>(png_ptr, info_ptr, ...) functions return non-zero if the
-data has been read, or zero if it is missing. The parameters to the
-png_get_<chunk> are set directly if they are simple data types, or a
-pointer into the info_ptr is returned for any complex types.
-
-The colorspace data from gAMA, cHRM, sRGB, iCCP, and sBIT chunks
-is simply returned to give the application information about how the
-image was encoded. Libpng itself only does transformations using the file
-gamma when combining semitransparent pixels with the background color, and,
-since libpng-1.6.0, when converting between 8-bit sRGB and 16-bit linear pixels
-within the simplified API. Libpng also uses the file gamma when converting
-RGB to gray, beginning with libpng-1.0.5, if the application calls
-png_set_rgb_to_gray()).
-
- png_get_PLTE(png_ptr, info_ptr, &palette,
- &num_palette);
-
- palette - the palette for the file
- (array of png_color)
-
- num_palette - number of entries in the palette
-
- png_get_gAMA(png_ptr, info_ptr, &file_gamma);
- png_get_gAMA_fixed(png_ptr, info_ptr, &int_file_gamma);
-
- file_gamma - the gamma at which the file is
- written (PNG_INFO_gAMA)
-
- int_file_gamma - 100,000 times the gamma at which the
- file is written
-
- png_get_cHRM(png_ptr, info_ptr, &white_x, &white_y, &red_x,
- &red_y, &green_x, &green_y, &blue_x, &blue_y)
- png_get_cHRM_XYZ(png_ptr, info_ptr, &red_X, &red_Y, &red_Z,
- &green_X, &green_Y, &green_Z, &blue_X, &blue_Y,
- &blue_Z)
- png_get_cHRM_fixed(png_ptr, info_ptr, &int_white_x,
- &int_white_y, &int_red_x, &int_red_y,
- &int_green_x, &int_green_y, &int_blue_x,
- &int_blue_y)
- png_get_cHRM_XYZ_fixed(png_ptr, info_ptr, &int_red_X, &int_red_Y,
- &int_red_Z, &int_green_X, &int_green_Y,
- &int_green_Z, &int_blue_X, &int_blue_Y,
- &int_blue_Z)
-
- {white,red,green,blue}_{x,y}
- A color space encoding specified using the
- chromaticities of the end points and the
- white point. (PNG_INFO_cHRM)
-
- {red,green,blue}_{X,Y,Z}
- A color space encoding specified using the
- encoding end points - the CIE tristimulus
- specification of the intended color of the red,
- green and blue channels in the PNG RGB data.
- The white point is simply the sum of the three
- end points. (PNG_INFO_cHRM)
-
- png_get_sRGB(png_ptr, info_ptr, &srgb_intent);
-
- file_srgb_intent - the rendering intent (PNG_INFO_sRGB)
- The presence of the sRGB chunk
- means that the pixel data is in the
- sRGB color space. This chunk also
- implies specific values of gAMA and
- cHRM.
-
- png_get_iCCP(png_ptr, info_ptr, &name,
- &compression_type, &profile, &proflen);
-
- name - The profile name.
-
- compression_type - The compression type; always
- PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
- You may give NULL to this argument to
- ignore it.
-
- profile - International Color Consortium color
- profile data. May contain NULs.
-
- proflen - length of profile data in bytes.
-
- png_get_sBIT(png_ptr, info_ptr, &sig_bit);
-
- sig_bit - the number of significant bits for
- (PNG_INFO_sBIT) each of the gray,
- red, green, and blue channels,
- whichever are appropriate for the
- given color type (png_color_16)
-
- png_get_tRNS(png_ptr, info_ptr, &trans_alpha,
- &num_trans, &trans_color);
-
- trans_alpha - array of alpha (transparency)
- entries for palette (PNG_INFO_tRNS)
-
- num_trans - number of transparent entries
- (PNG_INFO_tRNS)
-
- trans_color - graylevel or color sample values of
- the single transparent color for
- non-paletted images (PNG_INFO_tRNS)
-
- png_get_hIST(png_ptr, info_ptr, &hist);
- (PNG_INFO_hIST)
-
- hist - histogram of palette (array of
- png_uint_16)
-
- png_get_tIME(png_ptr, info_ptr, &mod_time);
-
- mod_time - time image was last modified
- (PNG_VALID_tIME)
-
- png_get_bKGD(png_ptr, info_ptr, &background);
-
- background - background color (of type
- png_color_16p) (PNG_VALID_bKGD)
- valid 16-bit red, green and blue
- values, regardless of color_type
-
- num_comments = png_get_text(png_ptr, info_ptr,
- &text_ptr, &num_text);
-
- num_comments - number of comments
-
- text_ptr - array of png_text holding image
- comments
-
- text_ptr[i].compression - type of compression used
- on "text" PNG_TEXT_COMPRESSION_NONE
- PNG_TEXT_COMPRESSION_zTXt
- PNG_ITXT_COMPRESSION_NONE
- PNG_ITXT_COMPRESSION_zTXt
-
- text_ptr[i].key - keyword for comment. Must contain
- 1-79 characters.
-
- text_ptr[i].text - text comments for current
- keyword. Can be empty.
-
- text_ptr[i].text_length - length of text string,
- after decompression, 0 for iTXt
-
- text_ptr[i].itxt_length - length of itxt string,
- after decompression, 0 for tEXt/zTXt
-
- text_ptr[i].lang - language of comment (empty
- string for unknown).
-
- text_ptr[i].lang_key - keyword in UTF-8
- (empty string for unknown).
-
- Note that the itxt_length, lang, and lang_key
- members of the text_ptr structure only exist when the
- library is built with iTXt chunk support. Prior to
- libpng-1.4.0 the library was built by default without
- iTXt support. Also note that when iTXt is supported,
- they contain NULL pointers when the "compression"
- field contains PNG_TEXT_COMPRESSION_NONE or
- PNG_TEXT_COMPRESSION_zTXt.
-
- num_text - number of comments (same as
- num_comments; you can put NULL here
- to avoid the duplication)
-
- Note while png_set_text() will accept text, language,
- and translated keywords that can be NULL pointers, the
- structure returned by png_get_text will always contain
- regular zero-terminated C strings. They might be
- empty strings but they will never be NULL pointers.
-
- num_spalettes = png_get_sPLT(png_ptr, info_ptr,
- &palette_ptr);
-
- num_spalettes - number of sPLT chunks read.
-
- palette_ptr - array of palette structures holding
- contents of one or more sPLT chunks
- read.
-
- png_get_oFFs(png_ptr, info_ptr, &offset_x, &offset_y,
- &unit_type);
-
- offset_x - positive offset from the left edge
- of the screen (can be negative)
-
- offset_y - positive offset from the top edge
- of the screen (can be negative)
-
- unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
-
- png_get_pHYs(png_ptr, info_ptr, &res_x, &res_y,
- &unit_type);
-
- res_x - pixels/unit physical resolution in
- x direction
-
- res_y - pixels/unit physical resolution in
- x direction
-
- unit_type - PNG_RESOLUTION_UNKNOWN,
- PNG_RESOLUTION_METER
-
- png_get_sCAL(png_ptr, info_ptr, &unit, &width,
- &height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
-
- height - height of a pixel in physical scale units
- (width and height are doubles)
-
- png_get_sCAL_s(png_ptr, info_ptr, &unit, &width,
- &height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
- (expressed as a string)
-
- height - height of a pixel in physical scale units
- (width and height are strings like "2.54")
-
- num_unknown_chunks = png_get_unknown_chunks(png_ptr,
- info_ptr, &unknowns)
-
- unknowns - array of png_unknown_chunk
- structures holding unknown chunks
-
- unknowns[i].name - name of unknown chunk
-
- unknowns[i].data - data of unknown chunk
-
- unknowns[i].size - size of unknown chunk's data
-
- unknowns[i].location - position of chunk in file
-
- The value of "i" corresponds to the order in which the
- chunks were read from the PNG file or inserted with the
- png_set_unknown_chunks() function.
-
- The value of "location" is a bitwise "or" of
-
- PNG_HAVE_IHDR (0x01)
- PNG_HAVE_PLTE (0x02)
- PNG_AFTER_IDAT (0x08)
-
-The data from the pHYs chunk can be retrieved in several convenient
-forms:
-
- res_x = png_get_x_pixels_per_meter(png_ptr,
- info_ptr)
-
- res_y = png_get_y_pixels_per_meter(png_ptr,
- info_ptr)
-
- res_x_and_y = png_get_pixels_per_meter(png_ptr,
- info_ptr)
-
- res_x = png_get_x_pixels_per_inch(png_ptr,
- info_ptr)
-
- res_y = png_get_y_pixels_per_inch(png_ptr,
- info_ptr)
-
- res_x_and_y = png_get_pixels_per_inch(png_ptr,
- info_ptr)
-
- aspect_ratio = png_get_pixel_aspect_ratio(png_ptr,
- info_ptr)
-
- Each of these returns 0 [signifying "unknown"] if
- the data is not present or if res_x is 0;
- res_x_and_y is 0 if res_x != res_y
-
- Note that because of the way the resolutions are
- stored internally, the inch conversions won't
- come out to exactly even number. For example,
- 72 dpi is stored as 0.28346 pixels/meter, and
- when this is retrieved it is 71.9988 dpi, so
- be sure to round the returned value appropriately
- if you want to display a reasonable-looking result.
-
-The data from the oFFs chunk can be retrieved in several convenient
-forms:
-
- x_offset = png_get_x_offset_microns(png_ptr, info_ptr);
-
- y_offset = png_get_y_offset_microns(png_ptr, info_ptr);
-
- x_offset = png_get_x_offset_inches(png_ptr, info_ptr);
-
- y_offset = png_get_y_offset_inches(png_ptr, info_ptr);
-
- Each of these returns 0 [signifying "unknown" if both
- x and y are 0] if the data is not present or if the
- chunk is present but the unit is the pixel. The
- remark about inexact inch conversions applies here
- as well, because a value in inches can't always be
- converted to microns and back without some loss
- of precision.
-
-For more information, see the
-PNG specification for chunk contents. Be careful with trusting
-rowbytes, as some of the transformations could increase the space
-needed to hold a row (expand, filler, gray_to_rgb, etc.).
-See png_read_update_info(), below.
-
-A quick word about text_ptr and num_text. PNG stores comments in
-keyword/text pairs, one pair per chunk, with no limit on the number
-of text chunks, and a 2^31 byte limit on their size. While there are
-suggested keywords, there is no requirement to restrict the use to these
-strings. It is strongly suggested that keywords and text be sensible
-to humans (that's the point), so don't use abbreviations. Non-printing
-symbols are not allowed. See the PNG specification for more details.
-There is also no requirement to have text after the keyword.
-
-Keywords should be limited to 79 Latin-1 characters without leading or
-trailing spaces, but non-consecutive spaces are allowed within the
-keyword. It is possible to have the same keyword any number of times.
-The text_ptr is an array of png_text structures, each holding a
-pointer to a language string, a pointer to a keyword and a pointer to
-a text string. The text string, language code, and translated
-keyword may be empty or NULL pointers. The keyword/text
-pairs are put into the array in the order that they are received.
-However, some or all of the text chunks may be after the image, so, to
-make sure you have read all the text chunks, don't mess with these
-until after you read the stuff after the image. This will be
-mentioned again below in the discussion that goes with png_read_end().
-
-.SS Input transformations
-
-After you've read the header information, you can set up the library
-to handle any special transformations of the image data. The various
-ways to transform the data will be described in the order that they
-should occur. This is important, as some of these change the color
-type and/or bit depth of the data, and some others only work on
-certain color types and bit depths.
-
-Transformations you request are ignored if they don't have any meaning for a
-particular input data format. However some transformations can have an effect
-as a result of a previous transformation. If you specify a contradictory set of
-transformations, for example both adding and removing the alpha channel, you
-cannot predict the final result.
-
-The color used for the transparency values should be supplied in the same
-format/depth as the current image data. It is stored in the same format/depth
-as the image data in a tRNS chunk, so this is what libpng expects for this data.
-
-The color used for the background value depends on the need_expand argument as
-described below.
-
-Data will be decoded into the supplied row buffers packed into bytes
-unless the library has been told to transform it into another format.
-For example, 4 bit/pixel paletted or grayscale data will be returned
-2 pixels/byte with the leftmost pixel in the high-order bits of the
-byte, unless png_set_packing() is called. 8-bit RGB data will be stored
-in RGB RGB RGB format unless png_set_filler() or png_set_add_alpha()
-is called to insert filler bytes, either before or after each RGB triplet.
-16-bit RGB data will be returned RRGGBB RRGGBB, with the most significant
-byte of the color value first, unless png_set_scale_16() is called to
-transform it to regular RGB RGB triplets, or png_set_filler() or
-png_set_add alpha() is called to insert filler bytes, either before or
-after each RRGGBB triplet. Similarly, 8-bit or 16-bit grayscale data can
-be modified with png_set_filler(), png_set_add_alpha(), png_set_strip_16(),
-or png_set_scale_16().
-
-The following code transforms grayscale images of less than 8 to 8 bits,
-changes paletted images to RGB, and adds a full alpha channel if there is
-transparency information in a tRNS chunk. This is most useful on
-grayscale images with bit depths of 2 or 4 or if there is a multiple-image
-viewing application that wishes to treat all images in the same way.
-
- if (color_type == PNG_COLOR_TYPE_PALETTE)
- png_set_palette_to_rgb(png_ptr);
-
- if (png_get_valid(png_ptr, info_ptr,
- PNG_INFO_tRNS)) png_set_tRNS_to_alpha(png_ptr);
-
- if (color_type == PNG_COLOR_TYPE_GRAY &&
- bit_depth < 8) png_set_expand_gray_1_2_4_to_8(png_ptr);
-
-The first two functions are actually aliases for png_set_expand(), added
-in libpng version 1.0.4, with the function names expanded to improve code
-readability. In some future version they may actually do different
-things.
-
-As of libpng version 1.2.9, png_set_expand_gray_1_2_4_to_8() was
-added. It expands the sample depth without changing tRNS to alpha.
-
-As of libpng version 1.5.2, png_set_expand_16() was added. It behaves as
-png_set_expand(); however, the resultant channels have 16 bits rather than 8.
-Use this when the output color or gray channels are made linear to avoid fairly
-severe accuracy loss.
-
- if (bit_depth < 16)
- png_set_expand_16(png_ptr);
-
-PNG can have files with 16 bits per channel. If you only can handle
-8 bits per channel, this will strip the pixels down to 8-bit.
-
- if (bit_depth == 16)
-#if PNG_LIBPNG_VER >= 10504
- png_set_scale_16(png_ptr);
-#else
- png_set_strip_16(png_ptr);
-#endif
-
-(The more accurate "png_set_scale_16()" API became available in libpng version
-1.5.4).
-
-If you need to process the alpha channel on the image separately from the image
-data (for example if you convert it to a bitmap mask) it is possible to have
-libpng strip the channel leaving just RGB or gray data:
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- png_set_strip_alpha(png_ptr);
-
-If you strip the alpha channel you need to find some other way of dealing with
-the information. If, instead, you want to convert the image to an opaque
-version with no alpha channel use png_set_background; see below.
-
-As of libpng version 1.5.2, almost all useful expansions are supported, the
-major ommissions are conversion of grayscale to indexed images (which can be
-done trivially in the application) and conversion of indexed to grayscale (which
-can be done by a trivial manipulation of the palette.)
-
-In the following table, the 01 means grayscale with depth<8, 31 means
-indexed with depth<8, other numerals represent the color type, "T" means
-the tRNS chunk is present, A means an alpha channel is present, and O
-means tRNS or alpha is present but all pixels in the image are opaque.
-
- FROM 01 31 0 0T 0O 2 2T 2O 3 3T 3O 4A 4O 6A 6O
- TO
- 01 - [G] - - - - - - - - - - - - -
- 31 [Q] Q [Q] [Q] [Q] Q Q Q Q Q Q [Q] [Q] Q Q
- 0 1 G + . . G G G G G G B B GB GB
- 0T lt Gt t + . Gt G G Gt G G Bt Bt GBt GBt
- 0O lt Gt t . + Gt Gt G Gt Gt G Bt Bt GBt GBt
- 2 C P C C C + . . C - - CB CB B B
- 2T Ct - Ct C C t + t - - - CBt CBt Bt Bt
- 2O Ct - Ct C C t t + - - - CBt CBt Bt Bt
- 3 [Q] p [Q] [Q] [Q] Q Q Q + . . [Q] [Q] Q Q
- 3T [Qt] p [Qt][Q] [Q] Qt Qt Qt t + t [Qt][Qt] Qt Qt
- 3O [Qt] p [Qt][Q] [Q] Qt Qt Qt t t + [Qt][Qt] Qt Qt
- 4A lA G A T T GA GT GT GA GT GT + BA G GBA
- 4O lA GBA A T T GA GT GT GA GT GT BA + GBA G
- 6A CA PA CA C C A T tT PA P P C CBA + BA
- 6O CA PBA CA C C A tT T PA P P CBA C BA +
-
-Within the matrix,
- "+" identifies entries where 'from' and 'to' are the same.
- "-" means the transformation is not supported.
- "." means nothing is necessary (a tRNS chunk can just be ignored).
- "t" means the transformation is obtained by png_set_tRNS.
- "A" means the transformation is obtained by png_set_add_alpha().
- "X" means the transformation is obtained by png_set_expand().
- "1" means the transformation is obtained by
- png_set_expand_gray_1_2_4_to_8() (and by png_set_expand()
- if there is no transparency in the original or the final
- format).
- "C" means the transformation is obtained by png_set_gray_to_rgb().
- "G" means the transformation is obtained by png_set_rgb_to_gray().
- "P" means the transformation is obtained by
- png_set_expand_palette_to_rgb().
- "p" means the transformation is obtained by png_set_packing().
- "Q" means the transformation is obtained by png_set_quantize().
- "T" means the transformation is obtained by
- png_set_tRNS_to_alpha().
- "B" means the transformation is obtained by
- png_set_background(), or png_strip_alpha().
-
-When an entry has multiple transforms listed all are required to cause the
-right overall transformation. When two transforms are separated by a comma
-either will do the job. When transforms are enclosed in [] the transform should
-do the job but this is currently unimplemented - a different format will result
-if the suggested transformations are used.
-
-In PNG files, the alpha channel in an image
-is the level of opacity. If you need the alpha channel in an image to
-be the level of transparency instead of opacity, you can invert the
-alpha channel (or the tRNS chunk data) after it's read, so that 0 is
-fully opaque and 255 (in 8-bit or paletted images) or 65535 (in 16-bit
-images) is fully transparent, with
-
- png_set_invert_alpha(png_ptr);
-
-PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
-they can, resulting in, for example, 8 pixels per byte for 1 bit
-files. This code expands to 1 pixel per byte without changing the
-values of the pixels:
-
- if (bit_depth < 8)
- png_set_packing(png_ptr);
-
-PNG files have possible bit depths of 1, 2, 4, 8, and 16. All pixels
-stored in a PNG image have been "scaled" or "shifted" up to the next
-higher possible bit depth (e.g. from 5 bits/sample in the range [0,31]
-to 8 bits/sample in the range [0, 255]). However, it is also possible
-to convert the PNG pixel data back to the original bit depth of the
-image. This call reduces the pixels back down to the original bit depth:
-
- png_color_8p sig_bit;
-
- if (png_get_sBIT(png_ptr, info_ptr, &sig_bit))
- png_set_shift(png_ptr, sig_bit);
-
-PNG files store 3-color pixels in red, green, blue order. This code
-changes the storage of the pixels to blue, green, red:
-
- if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_bgr(png_ptr);
-
-PNG files store RGB pixels packed into 3 or 6 bytes. This code expands them
-into 4 or 8 bytes for windowing systems that need them in this format:
-
- if (color_type == PNG_COLOR_TYPE_RGB)
- png_set_filler(png_ptr, filler, PNG_FILLER_BEFORE);
-
-where "filler" is the 8 or 16-bit number to fill with, and the location is
-either PNG_FILLER_BEFORE or PNG_FILLER_AFTER, depending upon whether
-you want the filler before the RGB or after. This transformation
-does not affect images that already have full alpha channels. To add an
-opaque alpha channel, use filler=0xff or 0xffff and PNG_FILLER_AFTER which
-will generate RGBA pixels.
-
-Note that png_set_filler() does not change the color type. If you want
-to do that, you can add a true alpha channel with
-
- if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_GRAY)
- png_set_add_alpha(png_ptr, filler, PNG_FILLER_AFTER);
-
-where "filler" contains the alpha value to assign to each pixel.
-This function was added in libpng-1.2.7.
-
-If you are reading an image with an alpha channel, and you need the
-data as ARGB instead of the normal PNG format RGBA:
-
- if (color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_swap_alpha(png_ptr);
-
-For some uses, you may want a grayscale image to be represented as
-RGB. This code will do that conversion:
-
- if (color_type == PNG_COLOR_TYPE_GRAY ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- png_set_gray_to_rgb(png_ptr);
-
-Conversely, you can convert an RGB or RGBA image to grayscale or grayscale
-with alpha.
-
- if (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- png_set_rgb_to_gray(png_ptr, error_action,
- double red_weight, double green_weight);
-
- error_action = 1: silently do the conversion
-
- error_action = 2: issue a warning if the original
- image has any pixel where
- red != green or red != blue
-
- error_action = 3: issue an error and abort the
- conversion if the original
- image has any pixel where
- red != green or red != blue
-
- red_weight: weight of red component
-
- green_weight: weight of green component
- If either weight is negative, default
- weights are used.
-
-In the corresponding fixed point API the red_weight and green_weight values are
-simply scaled by 100,000:
-
- png_set_rgb_to_gray(png_ptr, error_action,
- png_fixed_point red_weight,
- png_fixed_point green_weight);
-
-If you have set error_action = 1 or 2, you can
-later check whether the image really was gray, after processing
-the image rows, with the png_get_rgb_to_gray_status(png_ptr) function.
-It will return a png_byte that is zero if the image was gray or
-1 if there were any non-gray pixels. Background and sBIT data
-will be silently converted to grayscale, using the green channel
-data for sBIT, regardless of the error_action setting.
-
-The default values come from the PNG file cHRM chunk if present; otherwise, the
-defaults correspond to the ITU-R recommendation 709, and also the sRGB color
-space, as recommended in the Charles Poynton's Colour FAQ,
-<http://www.poynton.com/>, in section 9:
-
- <http://www.poynton.com/notes/colour_and_gamma/ColorFAQ.html#RTFToC9>
-
- Y = 0.2126 * R + 0.7152 * G + 0.0722 * B
-
-Previous versions of this document, 1998 through 2002, recommended a slightly
-different formula:
-
- Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
-
-Libpng uses an integer approximation:
-
- Y = (6968 * R + 23434 * G + 2366 * B)/32768
-
-The calculation is done in a linear colorspace, if the image gamma
-can be determined.
-
-The png_set_background() function has been described already; it tells libpng to
-composite images with alpha or simple transparency against the supplied
-background color. For compatibility with versions of libpng earlier than
-libpng-1.5.4 it is recommended that you call the function after reading the file
-header, even if you don't want to use the color in a bKGD chunk, if one exists.
-
-If the PNG file contains a bKGD chunk (PNG_INFO_bKGD valid),
-you may use this color, or supply another color more suitable for
-the current display (e.g., the background color from a web page). You
-need to tell libpng how the color is represented, both the format of the
-component values in the color (the number of bits) and the gamma encoding of the
-color. The function takes two arguments, background_gamma_mode and need_expand
-to convey this information; however, only two combinations are likely to be
-useful:
-
- png_color_16 my_background;
- png_color_16p image_background;
-
- if (png_get_bKGD(png_ptr, info_ptr, &image_background))
- png_set_background(png_ptr, image_background,
- PNG_BACKGROUND_GAMMA_FILE, 1/*needs to be expanded*/, 1);
- else
- png_set_background(png_ptr, &my_background,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*do not expand*/, 1);
-
-The second call was described above - my_background is in the format of the
-final, display, output produced by libpng. Because you now know the format of
-the PNG it is possible to avoid the need to choose either 8-bit or 16-bit
-output and to retain palette images (the palette colors will be modified
-appropriately and the tRNS chunk removed.) However, if you are doing this,
-take great care not to ask for transformations without checking first that
-they apply!
-
-In the first call the background color has the original bit depth and color type
-of the PNG file. So, for palette images the color is supplied as a palette
-index and for low bit greyscale images the color is a reduced bit value in
-image_background->gray.
-
-If you didn't call png_set_gamma() before reading the file header, for example
-if you need your code to remain compatible with older versions of libpng prior
-to libpng-1.5.4, this is the place to call it.
-
-Do not call it if you called png_set_alpha_mode(); doing so will damage the
-settings put in place by png_set_alpha_mode(). (If png_set_alpha_mode() is
-supported then you can certainly do png_set_gamma() before reading the PNG
-header.)
-
-This API unconditionally sets the screen and file gamma values, so it will
-override the value in the PNG file unless it is called before the PNG file
-reading starts. For this reason you must always call it with the PNG file
-value when you call it in this position:
-
- if (png_get_gAMA(png_ptr, info_ptr, &file_gamma))
- png_set_gamma(png_ptr, screen_gamma, file_gamma);
-
- else
- png_set_gamma(png_ptr, screen_gamma, 0.45455);
-
-If you need to reduce an RGB file to a paletted file, or if a paletted
-file has more entries then will fit on your screen, png_set_quantize()
-will do that. Note that this is a simple match quantization that merely
-finds the closest color available. This should work fairly well with
-optimized palettes, but fairly badly with linear color cubes. If you
-pass a palette that is larger than maximum_colors, the file will
-reduce the number of colors in the palette so it will fit into
-maximum_colors. If there is a histogram, libpng will use it to make
-more intelligent choices when reducing the palette. If there is no
-histogram, it may not do as good a job.
-
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- if (png_get_valid(png_ptr, info_ptr,
- PNG_INFO_PLTE))
- {
- png_uint_16p histogram = NULL;
-
- png_get_hIST(png_ptr, info_ptr,
- &histogram);
- png_set_quantize(png_ptr, palette, num_palette,
- max_screen_colors, histogram, 1);
- }
-
- else
- {
- png_color std_color_cube[MAX_SCREEN_COLORS] =
- { ... colors ... };
-
- png_set_quantize(png_ptr, std_color_cube,
- MAX_SCREEN_COLORS, MAX_SCREEN_COLORS,
- NULL,0);
- }
- }
-
-PNG files describe monochrome as black being zero and white being one.
-The following code will reverse this (make black be one and white be
-zero):
-
- if (bit_depth == 1 && color_type == PNG_COLOR_TYPE_GRAY)
- png_set_invert_mono(png_ptr);
-
-This function can also be used to invert grayscale and gray-alpha images:
-
- if (color_type == PNG_COLOR_TYPE_GRAY ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- png_set_invert_mono(png_ptr);
-
-PNG files store 16-bit pixels in network byte order (big-endian,
-ie. most significant bits first). This code changes the storage to the
-other way (little-endian, i.e. least significant bits first, the
-way PCs store them):
-
- if (bit_depth == 16)
- png_set_swap(png_ptr);
-
-If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
-need to change the order the pixels are packed into bytes, you can use:
-
- if (bit_depth < 8)
- png_set_packswap(png_ptr);
-
-Finally, you can write your own transformation function if none of
-the existing ones meets your needs. This is done by setting a callback
-with
-
- png_set_read_user_transform_fn(png_ptr,
- read_transform_fn);
-
-You must supply the function
-
- void read_transform_fn(png_structp png_ptr, png_row_infop
- row_info, png_bytep data)
-
-See pngtest.c for a working example. Your function will be called
-after all of the other transformations have been processed. Take care with
-interlaced images if you do the interlace yourself - the width of the row is the
-width in 'row_info', not the overall image width.
-
-If supported, libpng provides two information routines that you can use to find
-where you are in processing the image:
-
- png_get_current_pass_number(png_structp png_ptr);
- png_get_current_row_number(png_structp png_ptr);
-
-Don't try using these outside a transform callback - firstly they are only
-supported if user transforms are supported, secondly they may well return
-unexpected results unless the row is actually being processed at the moment they
-are called.
-
-With interlaced
-images the value returned is the row in the input sub-image image. Use
-PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
-find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
-
-The discussion of interlace handling above contains more information on how to
-use these values.
-
-You can also set up a pointer to a user structure for use by your
-callback function, and you can inform libpng that your transform
-function will change the number of channels or bit depth with the
-function
-
- png_set_user_transform_info(png_ptr, user_ptr,
- user_depth, user_channels);
-
-The user's application, not libpng, is responsible for allocating and
-freeing any memory required for the user structure.
-
-You can retrieve the pointer via the function
-png_get_user_transform_ptr(). For example:
-
- voidp read_user_transform_ptr =
- png_get_user_transform_ptr(png_ptr);
-
-The last thing to handle is interlacing; this is covered in detail below,
-but you must call the function here if you want libpng to handle expansion
-of the interlaced image.
-
- number_of_passes = png_set_interlace_handling(png_ptr);
-
-After setting the transformations, libpng can update your png_info
-structure to reflect any transformations you've requested with this
-call.
-
- png_read_update_info(png_ptr, info_ptr);
-
-This is most useful to update the info structure's rowbytes
-field so you can use it to allocate your image memory. This function
-will also update your palette with the correct screen_gamma and
-background if these have been given with the calls above. You may
-only call png_read_update_info() once with a particular info_ptr.
-
-After you call png_read_update_info(), you can allocate any
-memory you need to hold the image. The row data is simply
-raw byte data for all forms of images. As the actual allocation
-varies among applications, no example will be given. If you
-are allocating one large chunk, you will need to build an
-array of pointers to each row, as it will be needed for some
-of the functions below.
-
-Remember: Before you call png_read_update_info(), the png_get_*()
-functions return the values corresponding to the original PNG image.
-After you call png_read_update_info the values refer to the image
-that libpng will output. Consequently you must call all the png_set_
-functions before you call png_read_update_info(). This is particularly
-important for png_set_interlace_handling() - if you are going to call
-png_read_update_info() you must call png_set_interlace_handling() before
-it unless you want to receive interlaced output.
-
-.SS Reading image data
-
-After you've allocated memory, you can read the image data.
-The simplest way to do this is in one function call. If you are
-allocating enough memory to hold the whole image, you can just
-call png_read_image() and libpng will read in all the image data
-and put it in the memory area supplied. You will need to pass in
-an array of pointers to each row.
-
-This function automatically handles interlacing, so you don't
-need to call png_set_interlace_handling() (unless you call
-png_read_update_info()) or call this function multiple times, or any
-of that other stuff necessary with png_read_rows().
-
- png_read_image(png_ptr, row_pointers);
-
-where row_pointers is:
-
- png_bytep row_pointers[height];
-
-You can point to void or char or whatever you use for pixels.
-
-If you don't want to read in the whole image at once, you can
-use png_read_rows() instead. If there is no interlacing (check
-interlace_type == PNG_INTERLACE_NONE), this is simple:
-
- png_read_rows(png_ptr, row_pointers, NULL,
- number_of_rows);
-
-where row_pointers is the same as in the png_read_image() call.
-
-If you are doing this just one row at a time, you can do this with
-a single row_pointer instead of an array of row_pointers:
-
- png_bytep row_pointer = row;
- png_read_row(png_ptr, row_pointer, NULL);
-
-If the file is interlaced (interlace_type != 0 in the IHDR chunk), things
-get somewhat harder. The only current (PNG Specification version 1.2)
-interlacing type for PNG is (interlace_type == PNG_INTERLACE_ADAM7);
-a somewhat complicated 2D interlace scheme, known as Adam7, that
-breaks down an image into seven smaller images of varying size, based
-on an 8x8 grid. This number is defined (from libpng 1.5) as
-PNG_INTERLACE_ADAM7_PASSES in png.h
-
-libpng can fill out those images or it can give them to you "as is".
-It is almost always better to have libpng handle the interlacing for you.
-If you want the images filled out, there are two ways to do that. The one
-mentioned in the PNG specification is to expand each pixel to cover
-those pixels that have not been read yet (the "rectangle" method).
-This results in a blocky image for the first pass, which gradually
-smooths out as more pixels are read. The other method is the "sparkle"
-method, where pixels are drawn only in their final locations, with the
-rest of the image remaining whatever colors they were initialized to
-before the start of the read. The first method usually looks better,
-but tends to be slower, as there are more pixels to put in the rows.
-
-If, as is likely, you want libpng to expand the images, call this before
-calling png_start_read_image() or png_read_update_info():
-
- if (interlace_type == PNG_INTERLACE_ADAM7)
- number_of_passes
- = png_set_interlace_handling(png_ptr);
-
-This will return the number of passes needed. Currently, this is seven,
-but may change if another interlace type is added. This function can be
-called even if the file is not interlaced, where it will return one pass.
-You then need to read the whole image 'number_of_passes' times. Each time
-will distribute the pixels from the current pass to the correct place in
-the output image, so you need to supply the same rows to png_read_rows in
-each pass.
-
-If you are not going to display the image after each pass, but are
-going to wait until the entire image is read in, use the sparkle
-effect. This effect is faster and the end result of either method
-is exactly the same. If you are planning on displaying the image
-after each pass, the "rectangle" effect is generally considered the
-better looking one.
-
-If you only want the "sparkle" effect, just call png_read_rows() as
-normal, with the third parameter NULL. Make sure you make pass over
-the image number_of_passes times, and you don't change the data in the
-rows between calls. You can change the locations of the data, just
-not the data. Each pass only writes the pixels appropriate for that
-pass, and assumes the data from previous passes is still valid.
-
- png_read_rows(png_ptr, row_pointers, NULL,
- number_of_rows);
-
-If you only want the first effect (the rectangles), do the same as
-before except pass the row buffer in the third parameter, and leave
-the second parameter NULL.
-
- png_read_rows(png_ptr, NULL, row_pointers,
- number_of_rows);
-
-If you don't want libpng to handle the interlacing details, just call
-png_read_rows() PNG_INTERLACE_ADAM7_PASSES times to read in all the images.
-Each of the images is a valid image by itself; however, you will almost
-certainly need to distribute the pixels from each sub-image to the
-correct place. This is where everything gets very tricky.
-
-If you want to retrieve the separate images you must pass the correct
-number of rows to each successive call of png_read_rows(). The calculation
-gets pretty complicated for small images, where some sub-images may
-not even exist because either their width or height ends up zero.
-libpng provides two macros to help you in 1.5 and later versions:
-
- png_uint_32 width = PNG_PASS_COLS(image_width, pass_number);
- png_uint_32 height = PNG_PASS_ROWS(image_height, pass_number);
-
-Respectively these tell you the width and height of the sub-image
-corresponding to the numbered pass. 'pass' is in in the range 0 to 6 -
-this can be confusing because the specification refers to the same passes
-as 1 to 7! Be careful, you must check both the width and height before
-calling png_read_rows() and not call it for that pass if either is zero.
-
-You can, of course, read each sub-image row by row. If you want to
-produce optimal code to make a pixel-by-pixel transformation of an
-interlaced image this is the best approach; read each row of each pass,
-transform it, and write it out to a new interlaced image.
-
-If you want to de-interlace the image yourself libpng provides further
-macros to help that tell you where to place the pixels in the output image.
-Because the interlacing scheme is rectangular - sub-image pixels are always
-arranged on a rectangular grid - all you need to know for each pass is the
-starting column and row in the output image of the first pixel plus the
-spacing between each pixel. As of libpng 1.5 there are four macros to
-retrieve this information:
-
- png_uint_32 x = PNG_PASS_START_COL(pass);
- png_uint_32 y = PNG_PASS_START_ROW(pass);
- png_uint_32 xStep = 1U << PNG_PASS_COL_SHIFT(pass);
- png_uint_32 yStep = 1U << PNG_PASS_ROW_SHIFT(pass);
-
-These allow you to write the obvious loop:
-
- png_uint_32 input_y = 0;
- png_uint_32 output_y = PNG_PASS_START_ROW(pass);
-
- while (output_y < output_image_height)
- {
- png_uint_32 input_x = 0;
- png_uint_32 output_x = PNG_PASS_START_COL(pass);
-
- while (output_x < output_image_width)
- {
- image[output_y][output_x] =
- subimage[pass][input_y][input_x++];
-
- output_x += xStep;
- }
-
- ++input_y;
- output_y += yStep;
- }
-
-Notice that the steps between successive output rows and columns are
-returned as shifts. This is possible because the pixels in the subimages
-are always a power of 2 apart - 1, 2, 4 or 8 pixels - in the original
-image. In practice you may need to directly calculate the output coordinate
-given an input coordinate. libpng provides two further macros for this
-purpose:
-
- png_uint_32 output_x = PNG_COL_FROM_PASS_COL(input_x, pass);
- png_uint_32 output_y = PNG_ROW_FROM_PASS_ROW(input_y, pass);
-
-Finally a pair of macros are provided to tell you if a particular image
-row or column appears in a given pass:
-
- int col_in_pass = PNG_COL_IN_INTERLACE_PASS(output_x, pass);
- int row_in_pass = PNG_ROW_IN_INTERLACE_PASS(output_y, pass);
-
-Bear in mind that you will probably also need to check the width and height
-of the pass in addition to the above to be sure the pass even exists!
-
-With any luck you are convinced by now that you don't want to do your own
-interlace handling. In reality normally the only good reason for doing this
-is if you are processing PNG files on a pixel-by-pixel basis and don't want
-to load the whole file into memory when it is interlaced.
-
-libpng includes a test program, pngvalid, that illustrates reading and
-writing of interlaced images. If you can't get interlacing to work in your
-code and don't want to leave it to libpng (the recommended approach), see
-how pngvalid.c does it.
-
-.SS Finishing a sequential read
-
-After you are finished reading the image through the
-low-level interface, you can finish reading the file. If you are
-interested in comments or time, which may be stored either before or
-after the image data, you should pass the separate png_info struct if
-you want to keep the comments from before and after the image
-separate.
-
- png_infop end_info = png_create_info_struct(png_ptr);
-
- if (!end_info)
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
- png_read_end(png_ptr, end_info);
-
-If you are not interested, you should still call png_read_end()
-but you can pass NULL, avoiding the need to create an end_info structure.
-
- png_read_end(png_ptr, (png_infop)NULL);
-
-If you don't call png_read_end(), then your file pointer will be
-left pointing to the first chunk after the last IDAT, which is probably
-not what you want if you expect to read something beyond the end of
-the PNG datastream.
-
-When you are done, you can free all memory allocated by libpng like this:
-
- png_destroy_read_struct(&png_ptr, &info_ptr,
- &end_info);
-
-or, if you didn't create an end_info structure,
-
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
-
-It is also possible to individually free the info_ptr members that
-point to libpng-allocated storage with the following function:
-
- png_free_data(png_ptr, info_ptr, mask, seq)
-
- mask - identifies data to be freed, a mask
- containing the bitwise OR of one or
- more of
- PNG_FREE_PLTE, PNG_FREE_TRNS,
- PNG_FREE_HIST, PNG_FREE_ICCP,
- PNG_FREE_PCAL, PNG_FREE_ROWS,
- PNG_FREE_SCAL, PNG_FREE_SPLT,
- PNG_FREE_TEXT, PNG_FREE_UNKN,
- or simply PNG_FREE_ALL
-
- seq - sequence number of item to be freed
- (-1 for all items)
-
-This function may be safely called when the relevant storage has
-already been freed, or has not yet been allocated, or was allocated
-by the user and not by libpng, and will in those cases do nothing.
-The "seq" parameter is ignored if only one item of the selected data
-type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
-are allowed for the data type identified in the mask, such as text or
-sPLT, only the n'th item in the structure is freed, where n is "seq".
-
-The default behavior is only to free data that was allocated internally
-by libpng. This can be changed, so that libpng will not free the data,
-or so that it will free data that was allocated by the user with png_malloc()
-or png_calloc() and passed in via a png_set_*() function, with
-
- png_data_freer(png_ptr, info_ptr, freer, mask)
-
- freer - one of
- PNG_DESTROY_WILL_FREE_DATA
- PNG_SET_WILL_FREE_DATA
- PNG_USER_WILL_FREE_DATA
-
- mask - which data elements are affected
- same choices as in png_free_data()
-
-This function only affects data that has already been allocated.
-You can call this function after reading the PNG data but before calling
-any png_set_*() functions, to control whether the user or the png_set_*()
-function is responsible for freeing any existing data that might be present,
-and again after the png_set_*() functions to control whether the user
-or png_destroy_*() is supposed to free the data. When the user assumes
-responsibility for libpng-allocated data, the application must use
-png_free() to free it, and when the user transfers responsibility to libpng
-for data that the user has allocated, the user must have used png_malloc()
-or png_calloc() to allocate it.
-
-If you allocated your row_pointers in a single block, as suggested above in
-the description of the high level read interface, you must not transfer
-responsibility for freeing it to the png_set_rows or png_read_destroy function,
-because they would also try to free the individual row_pointers[i].
-
-If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
-separately, do not transfer responsibility for freeing text_ptr to libpng,
-because when libpng fills a png_text structure it combines these members with
-the key member, and png_free_data() will free only text_ptr.key. Similarly,
-if you transfer responsibility for free'ing text_ptr from libpng to your
-application, your application must not separately free those members.
-
-The png_free_data() function will turn off the "valid" flag for anything
-it frees. If you need to turn the flag off for a chunk that was freed by
-your application instead of by libpng, you can use
-
- png_set_invalid(png_ptr, info_ptr, mask);
-
- mask - identifies the chunks to be made invalid,
- containing the bitwise OR of one or
- more of
- PNG_INFO_gAMA, PNG_INFO_sBIT,
- PNG_INFO_cHRM, PNG_INFO_PLTE,
- PNG_INFO_tRNS, PNG_INFO_bKGD,
- PNG_INFO_hIST, PNG_INFO_pHYs,
- PNG_INFO_oFFs, PNG_INFO_tIME,
- PNG_INFO_pCAL, PNG_INFO_sRGB,
- PNG_INFO_iCCP, PNG_INFO_sPLT,
- PNG_INFO_sCAL, PNG_INFO_IDAT
-
-For a more compact example of reading a PNG image, see the file example.c.
-
-.SS Reading PNG files progressively
-
-The progressive reader is slightly different from the non-progressive
-reader. Instead of calling png_read_info(), png_read_rows(), and
-png_read_end(), you make one call to png_process_data(), which calls
-callbacks when it has the info, a row, or the end of the image. You
-set up these callbacks with png_set_progressive_read_fn(). You don't
-have to worry about the input/output functions of libpng, as you are
-giving the library the data directly in png_process_data(). I will
-assume that you have read the section on reading PNG files above,
-so I will only highlight the differences (although I will show
-all of the code).
-
-png_structp png_ptr;
-png_infop info_ptr;
-
- /* An example code fragment of how you would
- initialize the progressive reader in your
- application. */
- int
- initialize_png_reader()
- {
- png_ptr = png_create_read_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
-
- if (!png_ptr)
- return (ERROR);
-
- info_ptr = png_create_info_struct(png_ptr);
-
- if (!info_ptr)
- {
- png_destroy_read_struct(&png_ptr,
- (png_infopp)NULL, (png_infopp)NULL);
- return (ERROR);
- }
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
- /* This one's new. You can provide functions
- to be called when the header info is valid,
- when each row is completed, and when the image
- is finished. If you aren't using all functions,
- you can specify NULL parameters. Even when all
- three functions are NULL, you need to call
- png_set_progressive_read_fn(). You can use
- any struct as the user_ptr (cast to a void pointer
- for the function call), and retrieve the pointer
- from inside the callbacks using the function
-
- png_get_progressive_ptr(png_ptr);
-
- which will return a void pointer, which you have
- to cast appropriately.
- */
- png_set_progressive_read_fn(png_ptr, (void *)user_ptr,
- info_callback, row_callback, end_callback);
-
- return 0;
- }
-
- /* A code fragment that you call as you receive blocks
- of data */
- int
- process_data(png_bytep buffer, png_uint_32 length)
- {
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_read_struct(&png_ptr, &info_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
- /* This one's new also. Simply give it a chunk
- of data from the file stream (in order, of
- course). On machines with segmented memory
- models machines, don't give it any more than
- 64K. The library seems to run fine with sizes
- of 4K. Although you can give it much less if
- necessary (I assume you can give it chunks of
- 1 byte, I haven't tried less then 256 bytes
- yet). When this function returns, you may
- want to display any rows that were generated
- in the row callback if you don't already do
- so there.
- */
- png_process_data(png_ptr, info_ptr, buffer, length);
-
- /* At this point you can call png_process_data_skip if
- you want to handle data the library will skip yourself;
- it simply returns the number of bytes to skip (and stops
- libpng skipping that number of bytes on the next
- png_process_data call).
- return 0;
- }
-
- /* This function is called (as set by
- png_set_progressive_read_fn() above) when enough data
- has been supplied so all of the header has been
- read.
- */
- void
- info_callback(png_structp png_ptr, png_infop info)
- {
- /* Do any setup here, including setting any of
- the transformations mentioned in the Reading
- PNG files section. For now, you _must_ call
- either png_start_read_image() or
- png_read_update_info() after all the
- transformations are set (even if you don't set
- any). You may start getting rows before
- png_process_data() returns, so this is your
- last chance to prepare for that.
-
- This is where you turn on interlace handling,
- assuming you don't want to do it yourself.
-
- If you need to you can stop the processing of
- your original input data at this point by calling
- png_process_data_pause. This returns the number
- of unprocessed bytes from the last png_process_data
- call - it is up to you to ensure that the next call
- sees these bytes again. If you don't want to bother
- with this you can get libpng to cache the unread
- bytes by setting the 'save' parameter (see png.h) but
- then libpng will have to copy the data internally.
- */
- }
-
- /* This function is called when each row of image
- data is complete */
- void
- row_callback(png_structp png_ptr, png_bytep new_row,
- png_uint_32 row_num, int pass)
- {
- /* If the image is interlaced, and you turned
- on the interlace handler, this function will
- be called for every row in every pass. Some
- of these rows will not be changed from the
- previous pass. When the row is not changed,
- the new_row variable will be NULL. The rows
- and passes are called in order, so you don't
- really need the row_num and pass, but I'm
- supplying them because it may make your life
- easier.
-
- If you did not turn on interlace handling then
- the callback is called for each row of each
- sub-image when the image is interlaced. In this
- case 'row_num' is the row in the sub-image, not
- the row in the output image as it is in all other
- cases.
-
- For the non-NULL rows of interlaced images when
- you have switched on libpng interlace handling,
- you must call png_progressive_combine_row()
- passing in the row and the old row. You can
- call this function for NULL rows (it will just
- return) and for non-interlaced images (it just
- does the memcpy for you) if it will make the
- code easier. Thus, you can just do this for
- all cases if you switch on interlace handling;
- */
-
- png_progressive_combine_row(png_ptr, old_row,
- new_row);
-
- /* where old_row is what was displayed for
- previously for the row. Note that the first
- pass (pass == 0, really) will completely cover
- the old row, so the rows do not have to be
- initialized. After the first pass (and only
- for interlaced images), you will have to pass
- the current row, and the function will combine
- the old row and the new row.
-
- You can also call png_process_data_pause in this
- callback - see above.
- */
- }
-
- void
- end_callback(png_structp png_ptr, png_infop info)
- {
- /* This function is called after the whole image
- has been read, including any chunks after the
- image (up to and including the IEND). You
- will usually have the same info chunk as you
- had in the header, although some data may have
- been added to the comments and time fields.
-
- Most people won't do much here, perhaps setting
- a flag that marks the image as finished.
- */
- }
-
-
-
-.SH IV. Writing
-
-Much of this is very similar to reading. However, everything of
-importance is repeated here, so you won't have to constantly look
-back up in the reading section to understand writing.
-
-.SS Setup
-
-You will want to do the I/O initialization before you get into libpng,
-so if it doesn't work, you don't have anything to undo. If you are not
-using the standard I/O functions, you will need to replace them with
-custom writing functions. See the discussion under Customizing libpng.
-
- FILE *fp = fopen(file_name, "wb");
-
- if (!fp)
- return (ERROR);
-
-Next, png_struct and png_info need to be allocated and initialized.
-As these can be both relatively large, you may not want to store these
-on the stack, unless you have stack space to spare. Of course, you
-will want to check if they return NULL. If you are also reading,
-you won't want to name your read structure and your write structure
-both "png_ptr"; you can call them anything you like, such as
-"read_ptr" and "write_ptr". Look at pngtest.c, for example.
-
- png_structp png_ptr = png_create_write_struct
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn);
-
- if (!png_ptr)
- return (ERROR);
-
- png_infop info_ptr = png_create_info_struct(png_ptr);
- if (!info_ptr)
- {
- png_destroy_write_struct(&png_ptr,
- (png_infopp)NULL);
- return (ERROR);
- }
-
-If you want to use your own memory allocation routines,
-define PNG_USER_MEM_SUPPORTED and use
-png_create_write_struct_2() instead of png_create_write_struct():
-
- png_structp png_ptr = png_create_write_struct_2
- (PNG_LIBPNG_VER_STRING, (png_voidp)user_error_ptr,
- user_error_fn, user_warning_fn, (png_voidp)
- user_mem_ptr, user_malloc_fn, user_free_fn);
-
-After you have these structures, you will need to set up the
-error handling. When libpng encounters an error, it expects to
-longjmp() back to your routine. Therefore, you will need to call
-setjmp() and pass the png_jmpbuf(png_ptr). If you
-write the file from different routines, you will need to update
-the png_jmpbuf(png_ptr) every time you enter a new routine that will
-call a png_*() function. See your documentation of setjmp/longjmp
-for your compiler for more information on setjmp/longjmp. See
-the discussion on libpng error handling in the Customizing Libpng
-section below for more information on the libpng error handling.
-
- if (setjmp(png_jmpbuf(png_ptr)))
- {
- png_destroy_write_struct(&png_ptr, &info_ptr);
- fclose(fp);
- return (ERROR);
- }
- ...
- return;
-
-If you would rather avoid the complexity of setjmp/longjmp issues,
-you can compile libpng with PNG_NO_SETJMP, in which case
-errors will result in a call to PNG_ABORT() which defaults to abort().
-
-You can #define PNG_ABORT() to a function that does something
-more useful than abort(), as long as your function does not
-return.
-
-Checking for invalid palette index on write was added at libpng
-1.5.10. If a pixel contains an invalid (out-of-range) index libpng issues
-a benign error. This is enabled by default because this condition is an
-error according to the PNG specification, Clause 11.3.2, but the error can
-be ignored in each png_ptr with
-
- png_set_check_for_invalid_index(png_ptr, 0);
-
-If the error is ignored, or if png_benign_error() treats it as a warning,
-any invalid pixels are written as-is by the encoder, resulting in an
-invalid PNG datastream as output. In this case the application is
-responsible for ensuring that the pixel indexes are in range when it writes
-a PLTE chunk with fewer entries than the bit depth would allow.
-
-Now you need to set up the output code. The default for libpng is to
-use the C function fwrite(). If you use this, you will need to pass a
-valid FILE * in the function png_init_io(). Be sure that the file is
-opened in binary mode. Again, if you wish to handle writing data in
-another way, see the discussion on libpng I/O handling in the Customizing
-Libpng section below.
-
- png_init_io(png_ptr, fp);
-
-If you are embedding your PNG into a datastream such as MNG, and don't
-want libpng to write the 8-byte signature, or if you have already
-written the signature in your application, use
-
- png_set_sig_bytes(png_ptr, 8);
-
-to inform libpng that it should not write a signature.
-
-.SS Write callbacks
-
-At this point, you can set up a callback function that will be
-called after each row has been written, which you can use to control
-a progress meter or the like. It's demonstrated in pngtest.c.
-You must supply a function
-
- void write_row_callback(png_structp png_ptr, png_uint_32 row,
- int pass);
- {
- /* put your code here */
- }
-
-(You can give it another name that you like instead of "write_row_callback")
-
-To inform libpng about your function, use
-
- png_set_write_status_fn(png_ptr, write_row_callback);
-
-When this function is called the row has already been completely processed and
-it has also been written out. The 'row' and 'pass' refer to the next row to be
-handled. For the
-non-interlaced case the row that was just handled is simply one less than the
-passed in row number, and pass will always be 0. For the interlaced case the
-same applies unless the row value is 0, in which case the row just handled was
-the last one from one of the preceding passes. Because interlacing may skip a
-pass you cannot be sure that the preceding pass is just 'pass-1', if you really
-need to know what the last pass is record (row,pass) from the callback and use
-the last recorded value each time.
-
-As with the user transform you can find the output row using the
-PNG_ROW_FROM_PASS_ROW macro.
-
-You now have the option of modifying how the compression library will
-run. The following functions are mainly for testing, but may be useful
-in some cases, like if you need to write PNG files extremely fast and
-are willing to give up some compression, or if you want to get the
-maximum possible compression at the expense of slower writing. If you
-have no special needs in this area, let the library do what it wants by
-not calling this function at all, as it has been tuned to deliver a good
-speed/compression ratio. The second parameter to png_set_filter() is
-the filter method, for which the only valid values are 0 (as of the
-July 1999 PNG specification, version 1.2) or 64 (if you are writing
-a PNG datastream that is to be embedded in a MNG datastream). The third
-parameter is a flag that indicates which filter type(s) are to be tested
-for each scanline. See the PNG specification for details on the specific
-filter types.
-
-
- /* turn on or off filtering, and/or choose
- specific filters. You can use either a single
- PNG_FILTER_VALUE_NAME or the bitwise OR of one
- or more PNG_FILTER_NAME masks.
- */
- png_set_filter(png_ptr, 0,
- PNG_FILTER_NONE | PNG_FILTER_VALUE_NONE |
- PNG_FILTER_SUB | PNG_FILTER_VALUE_SUB |
- PNG_FILTER_UP | PNG_FILTER_VALUE_UP |
- PNG_FILTER_AVG | PNG_FILTER_VALUE_AVG |
- PNG_FILTER_PAETH | PNG_FILTER_VALUE_PAETH|
- PNG_ALL_FILTERS);
-
-If an application wants to start and stop using particular filters during
-compression, it should start out with all of the filters (to ensure that
-the previous row of pixels will be stored in case it's needed later),
-and then add and remove them after the start of compression.
-
-If you are writing a PNG datastream that is to be embedded in a MNG
-datastream, the second parameter can be either 0 or 64.
-
-The png_set_compression_*() functions interface to the zlib compression
-library, and should mostly be ignored unless you really know what you are
-doing. The only generally useful call is png_set_compression_level()
-which changes how much time zlib spends on trying to compress the image
-data. See the Compression Library (zlib.h and algorithm.txt, distributed
-with zlib) for details on the compression levels.
-
- #include zlib.h
-
- /* Set the zlib compression level */
- png_set_compression_level(png_ptr,
- Z_BEST_COMPRESSION);
-
- /* Set other zlib parameters for compressing IDAT */
- png_set_compression_mem_level(png_ptr, 8);
- png_set_compression_strategy(png_ptr,
- Z_DEFAULT_STRATEGY);
- png_set_compression_window_bits(png_ptr, 15);
- png_set_compression_method(png_ptr, 8);
- png_set_compression_buffer_size(png_ptr, 8192)
-
- /* Set zlib parameters for text compression
- * If you don't call these, the parameters
- * fall back on those defined for IDAT chunks
- */
- png_set_text_compression_mem_level(png_ptr, 8);
- png_set_text_compression_strategy(png_ptr,
- Z_DEFAULT_STRATEGY);
- png_set_text_compression_window_bits(png_ptr, 15);
- png_set_text_compression_method(png_ptr, 8);
-
-.SS Setting the contents of info for output
-
-You now need to fill in the png_info structure with all the data you
-wish to write before the actual image. Note that the only thing you
-are allowed to write after the image is the text chunks and the time
-chunk (as of PNG Specification 1.2, anyway). See png_write_end() and
-the latest PNG specification for more information on that. If you
-wish to write them before the image, fill them in now, and flag that
-data as being valid. If you want to wait until after the data, don't
-fill them until png_write_end(). For all the fields in png_info and
-their data types, see png.h. For explanations of what the fields
-contain, see the PNG specification.
-
-Some of the more important parts of the png_info are:
-
- png_set_IHDR(png_ptr, info_ptr, width, height,
- bit_depth, color_type, interlace_type,
- compression_type, filter_method)
-
- width - holds the width of the image
- in pixels (up to 2^31).
-
- height - holds the height of the image
- in pixels (up to 2^31).
-
- bit_depth - holds the bit depth of one of the
- image channels.
- (valid values are 1, 2, 4, 8, 16
- and depend also on the
- color_type. See also significant
- bits (sBIT) below).
-
- color_type - describes which color/alpha
- channels are present.
- PNG_COLOR_TYPE_GRAY
- (bit depths 1, 2, 4, 8, 16)
- PNG_COLOR_TYPE_GRAY_ALPHA
- (bit depths 8, 16)
- PNG_COLOR_TYPE_PALETTE
- (bit depths 1, 2, 4, 8)
- PNG_COLOR_TYPE_RGB
- (bit_depths 8, 16)
- PNG_COLOR_TYPE_RGB_ALPHA
- (bit_depths 8, 16)
-
- PNG_COLOR_MASK_PALETTE
- PNG_COLOR_MASK_COLOR
- PNG_COLOR_MASK_ALPHA
-
- interlace_type - PNG_INTERLACE_NONE or
- PNG_INTERLACE_ADAM7
-
- compression_type - (must be
- PNG_COMPRESSION_TYPE_DEFAULT)
-
- filter_method - (must be PNG_FILTER_TYPE_DEFAULT
- or, if you are writing a PNG to
- be embedded in a MNG datastream,
- can also be
- PNG_INTRAPIXEL_DIFFERENCING)
-
-If you call png_set_IHDR(), the call must appear before any of the
-other png_set_*() functions, because they might require access to some of
-the IHDR settings. The remaining png_set_*() functions can be called
-in any order.
-
-If you wish, you can reset the compression_type, interlace_type, or
-filter_method later by calling png_set_IHDR() again; if you do this, the
-width, height, bit_depth, and color_type must be the same in each call.
-
- png_set_PLTE(png_ptr, info_ptr, palette,
- num_palette);
-
- palette - the palette for the file
- (array of png_color)
- num_palette - number of entries in the palette
-
- png_set_gAMA(png_ptr, info_ptr, file_gamma);
- png_set_gAMA_fixed(png_ptr, info_ptr, int_file_gamma);
-
- file_gamma - the gamma at which the image was
- created (PNG_INFO_gAMA)
-
- int_file_gamma - 100,000 times the gamma at which
- the image was created
-
- png_set_cHRM(png_ptr, info_ptr, white_x, white_y, red_x, red_y,
- green_x, green_y, blue_x, blue_y)
- png_set_cHRM_XYZ(png_ptr, info_ptr, red_X, red_Y, red_Z, green_X,
- green_Y, green_Z, blue_X, blue_Y, blue_Z)
- png_set_cHRM_fixed(png_ptr, info_ptr, int_white_x, int_white_y,
- int_red_x, int_red_y, int_green_x, int_green_y,
- int_blue_x, int_blue_y)
- png_set_cHRM_XYZ_fixed(png_ptr, info_ptr, int_red_X, int_red_Y,
- int_red_Z, int_green_X, int_green_Y, int_green_Z,
- int_blue_X, int_blue_Y, int_blue_Z)
-
- {white,red,green,blue}_{x,y}
- A color space encoding specified using the chromaticities
- of the end points and the white point.
-
- {red,green,blue}_{X,Y,Z}
- A color space encoding specified using the encoding end
- points - the CIE tristimulus specification of the intended
- color of the red, green and blue channels in the PNG RGB
- data. The white point is simply the sum of the three end
- points.
-
- png_set_sRGB(png_ptr, info_ptr, srgb_intent);
-
- srgb_intent - the rendering intent
- (PNG_INFO_sRGB) The presence of
- the sRGB chunk means that the pixel
- data is in the sRGB color space.
- This chunk also implies specific
- values of gAMA and cHRM. Rendering
- intent is the CSS-1 property that
- has been defined by the International
- Color Consortium
- (http://www.color.org).
- It can be one of
- PNG_sRGB_INTENT_SATURATION,
- PNG_sRGB_INTENT_PERCEPTUAL,
- PNG_sRGB_INTENT_ABSOLUTE, or
- PNG_sRGB_INTENT_RELATIVE.
-
-
- png_set_sRGB_gAMA_and_cHRM(png_ptr, info_ptr,
- srgb_intent);
-
- srgb_intent - the rendering intent
- (PNG_INFO_sRGB) The presence of the
- sRGB chunk means that the pixel
- data is in the sRGB color space.
- This function also causes gAMA and
- cHRM chunks with the specific values
- that are consistent with sRGB to be
- written.
-
- png_set_iCCP(png_ptr, info_ptr, name, compression_type,
- profile, proflen);
-
- name - The profile name.
-
- compression_type - The compression type; always
- PNG_COMPRESSION_TYPE_BASE for PNG 1.0.
- You may give NULL to this argument to
- ignore it.
-
- profile - International Color Consortium color
- profile data. May contain NULs.
-
- proflen - length of profile data in bytes.
-
- png_set_sBIT(png_ptr, info_ptr, sig_bit);
-
- sig_bit - the number of significant bits for
- (PNG_INFO_sBIT) each of the gray, red,
- green, and blue channels, whichever are
- appropriate for the given color type
- (png_color_16)
-
- png_set_tRNS(png_ptr, info_ptr, trans_alpha,
- num_trans, trans_color);
-
- trans_alpha - array of alpha (transparency)
- entries for palette (PNG_INFO_tRNS)
-
- num_trans - number of transparent entries
- (PNG_INFO_tRNS)
-
- trans_color - graylevel or color sample values
- (in order red, green, blue) of the
- single transparent color for
- non-paletted images (PNG_INFO_tRNS)
-
- png_set_hIST(png_ptr, info_ptr, hist);
-
- hist - histogram of palette (array of
- png_uint_16) (PNG_INFO_hIST)
-
- png_set_tIME(png_ptr, info_ptr, mod_time);
-
- mod_time - time image was last modified
- (PNG_VALID_tIME)
-
- png_set_bKGD(png_ptr, info_ptr, background);
-
- background - background color (of type
- png_color_16p) (PNG_VALID_bKGD)
-
- png_set_text(png_ptr, info_ptr, text_ptr, num_text);
-
- text_ptr - array of png_text holding image
- comments
-
- text_ptr[i].compression - type of compression used
- on "text" PNG_TEXT_COMPRESSION_NONE
- PNG_TEXT_COMPRESSION_zTXt
- PNG_ITXT_COMPRESSION_NONE
- PNG_ITXT_COMPRESSION_zTXt
- text_ptr[i].key - keyword for comment. Must contain
- 1-79 characters.
- text_ptr[i].text - text comments for current
- keyword. Can be NULL or empty.
- text_ptr[i].text_length - length of text string,
- after decompression, 0 for iTXt
- text_ptr[i].itxt_length - length of itxt string,
- after decompression, 0 for tEXt/zTXt
- text_ptr[i].lang - language of comment (NULL or
- empty for unknown).
- text_ptr[i].translated_keyword - keyword in UTF-8 (NULL
- or empty for unknown).
-
- Note that the itxt_length, lang, and lang_key
- members of the text_ptr structure only exist when the
- library is built with iTXt chunk support. Prior to
- libpng-1.4.0 the library was built by default without
- iTXt support. Also note that when iTXt is supported,
- they contain NULL pointers when the "compression"
- field contains PNG_TEXT_COMPRESSION_NONE or
- PNG_TEXT_COMPRESSION_zTXt.
-
- num_text - number of comments
-
- png_set_sPLT(png_ptr, info_ptr, &palette_ptr,
- num_spalettes);
-
- palette_ptr - array of png_sPLT_struct structures
- to be added to the list of palettes
- in the info structure.
- num_spalettes - number of palette structures to be
- added.
-
- png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y,
- unit_type);
-
- offset_x - positive offset from the left
- edge of the screen
-
- offset_y - positive offset from the top
- edge of the screen
-
- unit_type - PNG_OFFSET_PIXEL, PNG_OFFSET_MICROMETER
-
- png_set_pHYs(png_ptr, info_ptr, res_x, res_y,
- unit_type);
-
- res_x - pixels/unit physical resolution
- in x direction
-
- res_y - pixels/unit physical resolution
- in y direction
-
- unit_type - PNG_RESOLUTION_UNKNOWN,
- PNG_RESOLUTION_METER
-
- png_set_sCAL(png_ptr, info_ptr, unit, width, height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
-
- height - height of a pixel in physical scale units
- (width and height are doubles)
-
- png_set_sCAL_s(png_ptr, info_ptr, unit, width, height)
-
- unit - physical scale units (an integer)
-
- width - width of a pixel in physical scale units
- expressed as a string
-
- height - height of a pixel in physical scale units
- (width and height are strings like "2.54")
-
- png_set_unknown_chunks(png_ptr, info_ptr, &unknowns,
- num_unknowns)
-
- unknowns - array of png_unknown_chunk
- structures holding unknown chunks
- unknowns[i].name - name of unknown chunk
- unknowns[i].data - data of unknown chunk
- unknowns[i].size - size of unknown chunk's data
- unknowns[i].location - position to write chunk in file
- 0: do not write chunk
- PNG_HAVE_IHDR: before PLTE
- PNG_HAVE_PLTE: before IDAT
- PNG_AFTER_IDAT: after IDAT
-
-The "location" member is set automatically according to
-what part of the output file has already been written.
-You can change its value after calling png_set_unknown_chunks()
-as demonstrated in pngtest.c. Within each of the "locations",
-the chunks are sequenced according to their position in the
-structure (that is, the value of "i", which is the order in which
-the chunk was either read from the input file or defined with
-png_set_unknown_chunks).
-
-A quick word about text and num_text. text is an array of png_text
-structures. num_text is the number of valid structures in the array.
-Each png_text structure holds a language code, a keyword, a text value,
-and a compression type.
-
-The compression types have the same valid numbers as the compression
-types of the image data. Currently, the only valid number is zero.
-However, you can store text either compressed or uncompressed, unlike
-images, which always have to be compressed. So if you don't want the
-text compressed, set the compression type to PNG_TEXT_COMPRESSION_NONE.
-Because tEXt and zTXt chunks don't have a language field, if you
-specify PNG_TEXT_COMPRESSION_NONE or PNG_TEXT_COMPRESSION_zTXt
-any language code or translated keyword will not be written out.
-
-Until text gets around a few hundred bytes, it is not worth compressing it.
-After the text has been written out to the file, the compression type
-is set to PNG_TEXT_COMPRESSION_NONE_WR or PNG_TEXT_COMPRESSION_zTXt_WR,
-so that it isn't written out again at the end (in case you are calling
-png_write_end() with the same struct).
-
-The keywords that are given in the PNG Specification are:
-
- Title Short (one line) title or
- caption for image
-
- Author Name of image's creator
-
- Description Description of image (possibly long)
-
- Copyright Copyright notice
-
- Creation Time Time of original image creation
- (usually RFC 1123 format, see below)
-
- Software Software used to create the image
-
- Disclaimer Legal disclaimer
-
- Warning Warning of nature of content
-
- Source Device used to create the image
-
- Comment Miscellaneous comment; conversion
- from other image format
-
-The keyword-text pairs work like this. Keywords should be short
-simple descriptions of what the comment is about. Some typical
-keywords are found in the PNG specification, as is some recommendations
-on keywords. You can repeat keywords in a file. You can even write
-some text before the image and some after. For example, you may want
-to put a description of the image before the image, but leave the
-disclaimer until after, so viewers working over modem connections
-don't have to wait for the disclaimer to go over the modem before
-they start seeing the image. Finally, keywords should be full
-words, not abbreviations. Keywords and text are in the ISO 8859-1
-(Latin-1) character set (a superset of regular ASCII) and can not
-contain NUL characters, and should not contain control or other
-unprintable characters. To make the comments widely readable, stick
-with basic ASCII, and avoid machine specific character set extensions
-like the IBM-PC character set. The keyword must be present, but
-you can leave off the text string on non-compressed pairs.
-Compressed pairs must have a text string, as only the text string
-is compressed anyway, so the compression would be meaningless.
-
-PNG supports modification time via the png_time structure. Two
-conversion routines are provided, png_convert_from_time_t() for
-time_t and png_convert_from_struct_tm() for struct tm. The
-time_t routine uses gmtime(). You don't have to use either of
-these, but if you wish to fill in the png_time structure directly,
-you should provide the time in universal time (GMT) if possible
-instead of your local time. Note that the year number is the full
-year (e.g. 1998, rather than 98 - PNG is year 2000 compliant!), and
-that months start with 1.
-
-If you want to store the time of the original image creation, you should
-use a plain tEXt chunk with the "Creation Time" keyword. This is
-necessary because the "creation time" of a PNG image is somewhat vague,
-depending on whether you mean the PNG file, the time the image was
-created in a non-PNG format, a still photo from which the image was
-scanned, or possibly the subject matter itself. In order to facilitate
-machine-readable dates, it is recommended that the "Creation Time"
-tEXt chunk use RFC 1123 format dates (e.g. "22 May 1997 18:07:10 GMT"),
-although this isn't a requirement. Unlike the tIME chunk, the
-"Creation Time" tEXt chunk is not expected to be automatically changed
-by the software. To facilitate the use of RFC 1123 dates, a function
-png_convert_to_rfc1123_buffer(png_ptr, buffer, png_timep) is provided to
-convert from PNG time to an RFC 1123 format string. The caller must provide
-a writeable buffer of at least 29 bytes.
-
-.SS Writing unknown chunks
-
-You can use the png_set_unknown_chunks function to queue up private chunks
-for writing. You give it a chunk name, location, raw data, and a size. You
-also must use png_set_keep_unknown_chunks() to ensure that libpng will
-handle them. That's all there is to it. The chunks will be written by the
-next following png_write_info_before_PLTE, png_write_info, or png_write_end
-function, depending upon the specified location. Any chunks previously
-read into the info structure's unknown-chunk list will also be written out
-in a sequence that satisfies the PNG specification's ordering rules.
-
-Here is an example of writing two private chunks, prVt and miNE:
-
- #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- /* Set unknown chunk data */
- png_unknown_chunk unk_chunk[2];
- strcpy((char *) unk_chunk[0].name, "prVt";
- unk_chunk[0].data = (unsigned char *) "PRIVATE DATA";
- unk_chunk[0].size = strlen(unk_chunk[0].data)+1;
- unk_chunk[0].location = PNG_HAVE_IHDR;
- strcpy((char *) unk_chunk[1].name, "miNE";
- unk_chunk[1].data = (unsigned char *) "MY CHUNK DATA";
- unk_chunk[1].size = strlen(unk_chunk[0].data)+1;
- unk_chunk[1].location = PNG_AFTER_IDAT;
- png_set_unknown_chunks(write_ptr, write_info_ptr,
- unk_chunk, 2);
- /* Needed because miNE is not safe-to-copy */
- png_set_keep_unknown_chunks(png, PNG_HANDLE_CHUNK_ALWAYS,
- (png_bytep) "miNE", 1);
- # if PNG_LIBPNG_VER < 10600
- /* Deal with unknown chunk location bug in 1.5.x and earlier */
- png_set_unknown_chunk_location(png, info, 0, PNG_HAVE_IHDR);
- png_set_unknown_chunk_location(png, info, 1, PNG_AFTER_IDAT);
- # endif
- # if PNG_LIBPNG_VER < 10500
- /* PNG_AFTER_IDAT writes two copies of the chunk prior to libpng-1.5.0,
- * one before IDAT and another after IDAT, so don't use it; only use
- * PNG_HAVE_IHDR location. This call resets the location previously
- * set by assignment and png_set_unknown_chunk_location() for chunk 1.
- */
- png_set_unknown_chunk_location(png, info, 1, PNG_HAVE_IHDR);
- # endif
- #endif
-
-.SS The high-level write interface
-
-At this point there are two ways to proceed; through the high-level
-write interface, or through a sequence of low-level write operations.
-You can use the high-level interface if your image data is present
-in the info structure. All defined output
-transformations are permitted, enabled by the following masks.
-
- PNG_TRANSFORM_IDENTITY No transformation
- PNG_TRANSFORM_PACKING Pack 1, 2 and 4-bit samples
- PNG_TRANSFORM_PACKSWAP Change order of packed
- pixels to LSB first
- PNG_TRANSFORM_INVERT_MONO Invert monochrome images
- PNG_TRANSFORM_SHIFT Normalize pixels to the
- sBIT depth
- PNG_TRANSFORM_BGR Flip RGB to BGR, RGBA
- to BGRA
- PNG_TRANSFORM_SWAP_ALPHA Flip RGBA to ARGB or GA
- to AG
- PNG_TRANSFORM_INVERT_ALPHA Change alpha from opacity
- to transparency
- PNG_TRANSFORM_SWAP_ENDIAN Byte-swap 16-bit samples
- PNG_TRANSFORM_STRIP_FILLER Strip out filler
- bytes (deprecated).
- PNG_TRANSFORM_STRIP_FILLER_BEFORE Strip out leading
- filler bytes
- PNG_TRANSFORM_STRIP_FILLER_AFTER Strip out trailing
- filler bytes
-
-If you have valid image data in the info structure (you can use
-png_set_rows() to put image data in the info structure), simply do this:
-
- png_write_png(png_ptr, info_ptr, png_transforms, NULL)
-
-where png_transforms is an integer containing the bitwise OR of some set of
-transformation flags. This call is equivalent to png_write_info(),
-followed the set of transformations indicated by the transform mask,
-then png_write_image(), and finally png_write_end().
-
-(The final parameter of this call is not yet used. Someday it might point
-to transformation parameters required by some future output transform.)
-
-You must use png_transforms and not call any png_set_transform() functions
-when you use png_write_png().
-
-.SS The low-level write interface
-
-If you are going the low-level route instead, you are now ready to
-write all the file information up to the actual image data. You do
-this with a call to png_write_info().
-
- png_write_info(png_ptr, info_ptr);
-
-Note that there is one transformation you may need to do before
-png_write_info(). In PNG files, the alpha channel in an image is the
-level of opacity. If your data is supplied as a level of transparency,
-you can invert the alpha channel before you write it, so that 0 is
-fully transparent and 255 (in 8-bit or paletted images) or 65535
-(in 16-bit images) is fully opaque, with
-
- png_set_invert_alpha(png_ptr);
-
-This must appear before png_write_info() instead of later with the
-other transformations because in the case of paletted images the tRNS
-chunk data has to be inverted before the tRNS chunk is written. If
-your image is not a paletted image, the tRNS data (which in such cases
-represents a single color to be rendered as transparent) won't need to
-be changed, and you can safely do this transformation after your
-png_write_info() call.
-
-If you need to write a private chunk that you want to appear before
-the PLTE chunk when PLTE is present, you can write the PNG info in
-two steps, and insert code to write your own chunk between them:
-
- png_write_info_before_PLTE(png_ptr, info_ptr);
- png_set_unknown_chunks(png_ptr, info_ptr, ...);
- png_write_info(png_ptr, info_ptr);
-
-After you've written the file information, you can set up the library
-to handle any special transformations of the image data. The various
-ways to transform the data will be described in the order that they
-should occur. This is important, as some of these change the color
-type and/or bit depth of the data, and some others only work on
-certain color types and bit depths. Even though each transformation
-checks to see if it has data that it can do something with, you should
-make sure to only enable a transformation if it will be valid for the
-data. For example, don't swap red and blue on grayscale data.
-
-PNG files store RGB pixels packed into 3 or 6 bytes. This code tells
-the library to strip input data that has 4 or 8 bytes per pixel down
-to 3 or 6 bytes (or strip 2 or 4-byte grayscale+filler data to 1 or 2
-bytes per pixel).
-
- png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
-
-where the 0 is unused, and the location is either PNG_FILLER_BEFORE or
-PNG_FILLER_AFTER, depending upon whether the filler byte in the pixel
-is stored XRGB or RGBX.
-
-PNG files pack pixels of bit depths 1, 2, and 4 into bytes as small as
-they can, resulting in, for example, 8 pixels per byte for 1 bit files.
-If the data is supplied at 1 pixel per byte, use this code, which will
-correctly pack the pixels into a single byte:
-
- png_set_packing(png_ptr);
-
-PNG files reduce possible bit depths to 1, 2, 4, 8, and 16. If your
-data is of another bit depth, you can write an sBIT chunk into the
-file so that decoders can recover the original data if desired.
-
- /* Set the true bit depth of the image data */
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- sig_bit.red = true_bit_depth;
- sig_bit.green = true_bit_depth;
- sig_bit.blue = true_bit_depth;
- }
-
- else
- {
- sig_bit.gray = true_bit_depth;
- }
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- {
- sig_bit.alpha = true_bit_depth;
- }
-
- png_set_sBIT(png_ptr, info_ptr, &sig_bit);
-
-If the data is stored in the row buffer in a bit depth other than
-one supported by PNG (e.g. 3 bit data in the range 0-7 for a 4-bit PNG),
-this will scale the values to appear to be the correct bit depth as
-is required by PNG.
-
- png_set_shift(png_ptr, &sig_bit);
-
-PNG files store 16-bit pixels in network byte order (big-endian,
-ie. most significant bits first). This code would be used if they are
-supplied the other way (little-endian, i.e. least significant bits
-first, the way PCs store them):
-
- if (bit_depth > 8)
- png_set_swap(png_ptr);
-
-If you are using packed-pixel images (1, 2, or 4 bits/pixel), and you
-need to change the order the pixels are packed into bytes, you can use:
-
- if (bit_depth < 8)
- png_set_packswap(png_ptr);
-
-PNG files store 3 color pixels in red, green, blue order. This code
-would be used if they are supplied as blue, green, red:
-
- png_set_bgr(png_ptr);
-
-PNG files describe monochrome as black being zero and white being
-one. This code would be used if the pixels are supplied with this reversed
-(black being one and white being zero):
-
- png_set_invert_mono(png_ptr);
-
-Finally, you can write your own transformation function if none of
-the existing ones meets your needs. This is done by setting a callback
-with
-
- png_set_write_user_transform_fn(png_ptr,
- write_transform_fn);
-
-You must supply the function
-
- void write_transform_fn(png_structp png_ptr, png_row_infop
- row_info, png_bytep data)
-
-See pngtest.c for a working example. Your function will be called
-before any of the other transformations are processed. If supported
-libpng also supplies an information routine that may be called from
-your callback:
-
- png_get_current_row_number(png_ptr);
- png_get_current_pass_number(png_ptr);
-
-This returns the current row passed to the transform. With interlaced
-images the value returned is the row in the input sub-image image. Use
-PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
-find the output pixel (x,y) given an interlaced sub-image pixel (row,col,pass).
-
-The discussion of interlace handling above contains more information on how to
-use these values.
-
-You can also set up a pointer to a user structure for use by your
-callback function.
-
- png_set_user_transform_info(png_ptr, user_ptr, 0, 0);
-
-The user_channels and user_depth parameters of this function are ignored
-when writing; you can set them to zero as shown.
-
-You can retrieve the pointer via the function png_get_user_transform_ptr().
-For example:
-
- voidp write_user_transform_ptr =
- png_get_user_transform_ptr(png_ptr);
-
-It is possible to have libpng flush any pending output, either manually,
-or automatically after a certain number of lines have been written. To
-flush the output stream a single time call:
-
- png_write_flush(png_ptr);
-
-and to have libpng flush the output stream periodically after a certain
-number of scanlines have been written, call:
-
- png_set_flush(png_ptr, nrows);
-
-Note that the distance between rows is from the last time png_write_flush()
-was called, or the first row of the image if it has never been called.
-So if you write 50 lines, and then png_set_flush 25, it will flush the
-output on the next scanline, and every 25 lines thereafter, unless
-png_write_flush() is called before 25 more lines have been written.
-If nrows is too small (less than about 10 lines for a 640 pixel wide
-RGB image) the image compression may decrease noticeably (although this
-may be acceptable for real-time applications). Infrequent flushing will
-only degrade the compression performance by a few percent over images
-that do not use flushing.
-
-.SS Writing the image data
-
-That's it for the transformations. Now you can write the image data.
-The simplest way to do this is in one function call. If you have the
-whole image in memory, you can just call png_write_image() and libpng
-will write the image. You will need to pass in an array of pointers to
-each row. This function automatically handles interlacing, so you don't
-need to call png_set_interlace_handling() or call this function multiple
-times, or any of that other stuff necessary with png_write_rows().
-
- png_write_image(png_ptr, row_pointers);
-
-where row_pointers is:
-
- png_byte *row_pointers[height];
-
-You can point to void or char or whatever you use for pixels.
-
-If you don't want to write the whole image at once, you can
-use png_write_rows() instead. If the file is not interlaced,
-this is simple:
-
- png_write_rows(png_ptr, row_pointers,
- number_of_rows);
-
-row_pointers is the same as in the png_write_image() call.
-
-If you are just writing one row at a time, you can do this with
-a single row_pointer instead of an array of row_pointers:
-
- png_bytep row_pointer = row;
-
- png_write_row(png_ptr, row_pointer);
-
-When the file is interlaced, things can get a good deal more complicated.
-The only currently (as of the PNG Specification version 1.2, dated July
-1999) defined interlacing scheme for PNG files is the "Adam7" interlace
-scheme, that breaks down an image into seven smaller images of varying
-size. libpng will build these images for you, or you can do them
-yourself. If you want to build them yourself, see the PNG specification
-for details of which pixels to write when.
-
-If you don't want libpng to handle the interlacing details, just
-use png_set_interlace_handling() and call png_write_rows() the
-correct number of times to write all the sub-images
-(png_set_interlace_handling() returns the number of sub-images.)
-
-If you want libpng to build the sub-images, call this before you start
-writing any rows:
-
- number_of_passes = png_set_interlace_handling(png_ptr);
-
-This will return the number of passes needed. Currently, this is seven,
-but may change if another interlace type is added.
-
-Then write the complete image number_of_passes times.
-
- png_write_rows(png_ptr, row_pointers, number_of_rows);
-
-Think carefully before you write an interlaced image. Typically code that
-reads such images reads all the image data into memory, uncompressed, before
-doing any processing. Only code that can display an image on the fly can
-take advantage of the interlacing and even then the image has to be exactly
-the correct size for the output device, because scaling an image requires
-adjacent pixels and these are not available until all the passes have been
-read.
-
-If you do write an interlaced image you will hardly ever need to handle
-the interlacing yourself. Call png_set_interlace_handling() and use the
-approach described above.
-
-The only time it is conceivable that you will really need to write an
-interlaced image pass-by-pass is when you have read one pass by pass and
-made some pixel-by-pixel transformation to it, as described in the read
-code above. In this case use the PNG_PASS_ROWS and PNG_PASS_COLS macros
-to determine the size of each sub-image in turn and simply write the rows
-you obtained from the read code.
-
-.SS Finishing a sequential write
-
-After you are finished writing the image, you should finish writing
-the file. If you are interested in writing comments or time, you should
-pass an appropriately filled png_info pointer. If you are not interested,
-you can pass NULL.
-
- png_write_end(png_ptr, info_ptr);
-
-When you are done, you can free all memory used by libpng like this:
-
- png_destroy_write_struct(&png_ptr, &info_ptr);
-
-It is also possible to individually free the info_ptr members that
-point to libpng-allocated storage with the following function:
-
- png_free_data(png_ptr, info_ptr, mask, seq)
-
- mask - identifies data to be freed, a mask
- containing the bitwise OR of one or
- more of
- PNG_FREE_PLTE, PNG_FREE_TRNS,
- PNG_FREE_HIST, PNG_FREE_ICCP,
- PNG_FREE_PCAL, PNG_FREE_ROWS,
- PNG_FREE_SCAL, PNG_FREE_SPLT,
- PNG_FREE_TEXT, PNG_FREE_UNKN,
- or simply PNG_FREE_ALL
-
- seq - sequence number of item to be freed
- (-1 for all items)
-
-This function may be safely called when the relevant storage has
-already been freed, or has not yet been allocated, or was allocated
-by the user and not by libpng, and will in those cases do nothing.
-The "seq" parameter is ignored if only one item of the selected data
-type, such as PLTE, is allowed. If "seq" is not -1, and multiple items
-are allowed for the data type identified in the mask, such as text or
-sPLT, only the n'th item in the structure is freed, where n is "seq".
-
-If you allocated data such as a palette that you passed in to libpng
-with png_set_*, you must not free it until just before the call to
-png_destroy_write_struct().
-
-The default behavior is only to free data that was allocated internally
-by libpng. This can be changed, so that libpng will not free the data,
-or so that it will free data that was allocated by the user with png_malloc()
-or png_calloc() and passed in via a png_set_*() function, with
-
- png_data_freer(png_ptr, info_ptr, freer, mask)
-
- freer - one of
- PNG_DESTROY_WILL_FREE_DATA
- PNG_SET_WILL_FREE_DATA
- PNG_USER_WILL_FREE_DATA
-
- mask - which data elements are affected
- same choices as in png_free_data()
-
-For example, to transfer responsibility for some data from a read structure
-to a write structure, you could use
-
- png_data_freer(read_ptr, read_info_ptr,
- PNG_USER_WILL_FREE_DATA,
- PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
-
- png_data_freer(write_ptr, write_info_ptr,
- PNG_DESTROY_WILL_FREE_DATA,
- PNG_FREE_PLTE|PNG_FREE_tRNS|PNG_FREE_hIST)
-
-thereby briefly reassigning responsibility for freeing to the user but
-immediately afterwards reassigning it once more to the write_destroy
-function. Having done this, it would then be safe to destroy the read
-structure and continue to use the PLTE, tRNS, and hIST data in the write
-structure.
-
-This function only affects data that has already been allocated.
-You can call this function before calling after the png_set_*() functions
-to control whether the user or png_destroy_*() is supposed to free the data.
-When the user assumes responsibility for libpng-allocated data, the
-application must use
-png_free() to free it, and when the user transfers responsibility to libpng
-for data that the user has allocated, the user must have used png_malloc()
-or png_calloc() to allocate it.
-
-If you allocated text_ptr.text, text_ptr.lang, and text_ptr.translated_keyword
-separately, do not transfer responsibility for freeing text_ptr to libpng,
-because when libpng fills a png_text structure it combines these members with
-the key member, and png_free_data() will free only text_ptr.key. Similarly,
-if you transfer responsibility for free'ing text_ptr from libpng to your
-application, your application must not separately free those members.
-For a more compact example of writing a PNG image, see the file example.c.
-
-.SH V. Simplified API
-
-The simplified API, which became available in libpng-1.6.0, hides the details
-of both libpng and the PNG file format itself.
-It allows PNG files to be read into a very limited number of
-in-memory bitmap formats or to be written from the same formats. If these
-formats do not accomodate your needs then you can, and should, use the more
-sophisticated APIs above - these support a wide variety of in-memory formats
-and a wide variety of sophisticated transformations to those formats as well
-as a wide variety of APIs to manipulate ancilliary information.
-
-To read a PNG file using the simplified API:
-
- 1) Declare a 'png_image' structure (see below) on the
- stack and memset() it to all zero.
-
- 2) Call the appropriate png_image_begin_read... function.
-
- 3) Set the png_image 'format' member to the required
- format and allocate a buffer for the image.
-
- 4) Call png_image_finish_read to read the image into
- your buffer.
-
-There are no restrictions on the format of the PNG input itself; all valid
-color types, bit depths, and interlace methods are acceptable, and the
-input image is transformed as necessary to the requested in-memory format
-during the png_image_finish_read() step.
-
-To write a PNG file using the simplified API:
-
- 1) Declare a 'png_image' structure on the stack and memset()
- it to all zero.
-
- 2) Initialize the members of the structure that describe the
- image, setting the 'format' member to the format of the
- image in memory.
-
- 3) Call the appropriate png_image_write... function with a
- pointer to the image to write the PNG data.
-
-png_image is a structure that describes the in-memory format of an image
-when it is being read or define the in-memory format of an image that you
-need to write. The "png_image" structure contains the following members:
-
- png_uint_32 version Set to PNG_IMAGE_VERSION
- png_uint_32 width Image width in pixels (columns)
- png_uint_32 height Image height in pixels (rows)
- png_uint_32 format Image format as defined below
- png_uint_32 flags A bit mask containing informational flags
- png_controlp opaque Initialize to NULL, free with png_image_free
- png_uint_32 colormap_entries; Number of entries in the color-map
- png_uint_32 warning_or_error;
- char message[64];
-
-In the event of an error or warning the following field warning_or_error
-field will be set to a non-zero value and the 'message' field will contain
-a '\0' terminated string with the libpng error or warning message. If both
-warnings and an error were encountered, only the error is recorded. If there
-are multiple warnings, only the first one is recorded.
-
-The upper 30 bits of this value are reserved; the low two bits contain
-a two bit code such that a value more than 1 indicates a failure in the API
-just called:
-
- 0 - no warning or error
- 1 - warning
- 2 - error
- 3 - error preceded by warning
-
-The pixels (samples) of the image have one to four channels whose components
-have original values in the range 0 to 1.0:
-
- 1: A single gray or luminance channel (G).
- 2: A gray/luminance channel and an alpha channel (GA).
- 3: Three red, green, blue color channels (RGB).
- 4: Three color channels and an alpha channel (RGBA).
-
-The channels are encoded in one of two ways:
-
- a) As a small integer, value 0..255, contained in a single byte. For the
-alpha channel the original value is simply value/255. For the color or
-luminance channels the value is encoded according to the sRGB specification
-and matches the 8-bit format expected by typical display devices.
-
-The color/gray channels are not scaled (pre-multiplied) by the alpha
-channel and are suitable for passing to color management software.
-
- b) As a value in the range 0..65535, contained in a 2-byte integer. All
-channels can be converted to the original value by dividing by 65535; all
-channels are linear. Color channels use the RGB encoding (RGB end-points) of
-the sRGB specification. This encoding is identified by the
-PNG_FORMAT_FLAG_LINEAR flag below.
-
-When an alpha channel is present it is expected to denote pixel coverage
-of the color or luminance channels and is returned as an associated alpha
-channel: the color/gray channels are scaled (pre-multiplied) by the alpha
-value.
-
-When a color-mapped image is used as a result of calling
-png_image_read_colormap or png_image_write_colormap the channels are encoded
-in the color-map and the descriptions above apply to the color-map entries.
-The image data is encoded as small integers, value 0..255, that index the
-entries in the color-map. One integer (one byte) is stored for each pixel.
-
-PNG_FORMAT_*
-
-The #defines to be used in png_image::format. Each #define identifies a
-particular layout of channel data and, if present, alpha values. There are
-separate defines for each of the two channel encodings.
-
-A format is built up using single bit flag values. Not all combinations are
-valid: use the bit flag values below for testing a format returned by the
-read APIs, but set formats from the derived values.
-
-When reading or writing color-mapped images the format should be set to the
-format of the entries in the color-map then png_image_{read,write}_colormap
-called to read or write the color-map and set the format correctly for the
-image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly!
-
-NOTE: libpng can be built with particular features disabled, if you see
-compiler errors because the definition of one of the following flags has been
-compiled out it is because libpng does not have the required support. It is
-possible, however, for the libpng configuration to enable the format on just
-read or just write; in that case you may see an error at run time. You can
-guard against this by checking for the definition of:
-
- PNG_SIMPLIFIED_{READ,WRITE}_{BGR,AFIRST}_SUPPORTED
-
- PNG_FORMAT_FLAG_ALPHA 0x01 format with an alpha channel
- PNG_FORMAT_FLAG_COLOR 0x02 color format: otherwise grayscale
- PNG_FORMAT_FLAG_LINEAR 0x04 png_uint_16 channels else png_byte
- PNG_FORMAT_FLAG_COLORMAP 0x08 libpng use only
- PNG_FORMAT_FLAG_BGR 0x10 BGR colors, else order is RGB
- PNG_FORMAT_FLAG_AFIRST 0x20 alpha channel comes first
-
-Supported formats are as follows. Future versions of libpng may support more
-formats; for compatibility with older versions simply check if the format
-macro is defined using #ifdef. These defines describe the in-memory layout
-of the components of the pixels of the image.
-
-First the single byte formats:
-
- PNG_FORMAT_GRAY 0
- PNG_FORMAT_GA PNG_FORMAT_FLAG_ALPHA
- PNG_FORMAT_AG (PNG_FORMAT_GA|PNG_FORMAT_FLAG_AFIRST)
- PNG_FORMAT_RGB PNG_FORMAT_FLAG_COLOR
- PNG_FORMAT_BGR (PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_BGR)
- PNG_FORMAT_RGBA (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_ALPHA)
- PNG_FORMAT_ARGB (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_AFIRST)
- PNG_FORMAT_BGRA (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_ALPHA)
- PNG_FORMAT_ABGR (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_AFIRST)
-
-Then the linear 2-byte formats. When naming these "Y" is used to
-indicate a luminance (gray) channel. The component order within the pixel
-is always the same - there is no provision for swapping the order of the
-components in the linear format.
-
- PNG_FORMAT_LINEAR_Y PNG_FORMAT_FLAG_LINEAR
- PNG_FORMAT_LINEAR_Y_ALPHA
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_ALPHA)
- PNG_FORMAT_LINEAR_RGB
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR)
- PNG_FORMAT_LINEAR_RGB_ALPHA
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR|
- PNG_FORMAT_FLAG_ALPHA)
-
-Color-mapped formats are obtained by calling png_image_{read,write}_colormap,
-as appropriate after setting png_image::format to the format of the color-map
-to be read or written. Applications may check the value of
-PNG_FORMAT_FLAG_COLORMAP to see if they have called the colormap API. The
-format of the color-map may be extracted using the following macro.
-
- PNG_FORMAT_OF_COLORMAP(fmt) ((fmt) & ~PNG_FORMAT_FLAG_COLORMAP)
-
-PNG_IMAGE macros
-
-These are convenience macros to derive information from a png_image
-structure. The PNG_IMAGE_SAMPLE_ macros return values appropriate to the
-actual image sample values - either the entries in the color-map or the
-pixels in the image. The PNG_IMAGE_PIXEL_ macros return corresponding values
-for the pixels and will always return 1 after a call to
-png_image_{read,write}_colormap. The remaining macros return information
-about the rows in the image and the complete image.
-
-NOTE: All the macros that take a png_image::format parameter are compile time
-constants if the format parameter is, itself, a constant. Therefore these
-macros can be used in array declarations and case labels where required.
-Similarly the macros are also pre-processor constants (sizeof is not used) so
-they can be used in #if tests.
-
-First the information about the samples.
-
- PNG_IMAGE_SAMPLE_CHANNELS(fmt)
- Returns the total number of channels in a given format: 1..4
-
- PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt)
- Returns the size in bytes of a single component of a pixel or color-map
- entry (as appropriate) in the image.
-
- PNG_IMAGE_SAMPLE_SIZE(fmt)
- This is the size of the sample data for one sample. If the image is
- color-mapped it is the size of one color-map entry (and image pixels are
- one byte in size), otherwise it is the size of one image pixel.
-
- PNG_IMAGE_COLORMAP_SIZE(fmt)
- The size of the color-map required by the format; this is the size of the
- color-map buffer passed to the png_image_{read,write}_colormap APIs, it is
- a fixed number determined by the format so can easily be allocated on the
- stack if necessary.
-
-#define PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(fmt)\
- (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * 256)
- /* The maximum size of the color-map required by the format expressed in a
- * count of components. This can be used to compile-time allocate a
- * color-map:
- *
- * png_uint_16 colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(linear_fmt)];
- *
- * png_byte colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(sRGB_fmt)];
- *
- * Alternatively use the PNG_IMAGE_COLORMAP_SIZE macro below to use the
- * information from one of the png_image_begin_read_ APIs and dynamically
- * allocate the required memory.
- */
-
-
-Corresponding information about the pixels
-
- PNG_IMAGE_PIXEL_(test,fmt)
-
- PNG_IMAGE_PIXEL_CHANNELS(fmt)
- The number of separate channels (components) in a pixel; 1 for a
- color-mapped image.
-
- PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)\
- The size, in bytes, of each component in a pixel; 1 for a color-mapped
- image.
-
- PNG_IMAGE_PIXEL_SIZE(fmt)
- The size, in bytes, of a complete pixel; 1 for a color-mapped image.
-
-Information about the whole row, or whole image
-
- PNG_IMAGE_ROW_STRIDE(image)
- Returns the total number of components in a single row of the image; this
- is the minimum 'row stride', the minimum count of components between each
- row. For a color-mapped image this is the minimum number of bytes in a
- row.
-
- PNG_IMAGE_BUFFER_SIZE(image, row_stride)
- Returns the size, in bytes, of an image buffer given a png_image and a row
- stride - the number of components to leave space for in each row.
-
- PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB == 0x01
- This indicates the the RGB values of the in-memory bitmap do not
- correspond to the red, green and blue end-points defined by sRGB.
-
- PNG_IMAGE_FLAG_COLORMAP == 0x02
- The PNG is color-mapped. If this flag is set png_image_read_colormap
- can be used without further loss of image information. If it is not set
- png_image_read_colormap will cause significant loss if the image has any
-
-READ APIs
-
- The png_image passed to the read APIs must have been initialized by setting
- the png_controlp field 'opaque' to NULL (or, better, memset the whole thing.)
-
- int png_image_begin_read_from_file( png_imagep image,
- const char *file_name)
-
- The named file is opened for read and the image header
- is filled in from the PNG header in the file.
-
- int png_image_begin_read_from_stdio (png_imagep image,
- FILE* file)
-
- The PNG header is read from the stdio FILE object.
-
- int png_image_begin_read_from_memory(png_imagep image,
- png_const_voidp memory, png_size_t size)
-
- The PNG header is read from the given memory buffer.
-
- int png_image_finish_read(png_imagep image,
- png_colorp background, void *buffer,
- png_int_32 row_stride, void *colormap));
-
- Finish reading the image into the supplied buffer and
- clean up the png_image structure.
-
- row_stride is the step, in png_byte or png_uint_16 units
- as appropriate, between adjacent rows. A positive stride
- indicates that the top-most row is first in the buffer -
- the normal top-down arrangement. A negative stride
- indicates that the bottom-most row is first in the buffer.
-
- background need only be supplied if an alpha channel must
- be removed from a png_byte format and the removal is to be
- done by compositing on a solid color; otherwise it may be
- NULL and any composition will be done directly onto the
- buffer. The value is an sRGB color to use for the
- background, for grayscale output the green channel is used.
-
- For linear output removing the alpha channel is always done
- by compositing on black.
-
- void png_image_free(png_imagep image)
-
- Free any data allocated by libpng in image->opaque,
- setting the pointer to NULL. May be called at any time
- after the structure is initialized.
-
-When the simplified API needs to convert between sRGB and linear colorspaces,
-the actual sRGB transfer curve defined in the sRGB specification (see the
-article at http://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2
-approximation used elsewhere in libpng.
-
-WRITE APIS
-
-For write you must initialize a png_image structure to describe the image to
-be written:
-
- version: must be set to PNG_IMAGE_VERSION
- opaque: must be initialized to NULL
- width: image width in pixels
- height: image height in rows
- format: the format of the data you wish to write
- flags: set to 0 unless one of the defined flags applies; set
- PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB for color format images
- where the RGB values do not correspond to the colors in sRGB.
- colormap_entries: set to the number of entries in the color-map (0 to 256)
-
- int png_image_write_to_file, (png_imagep image,
- const char *file, int convert_to_8bit, const void *buffer,
- png_int_32 row_stride, const void *colormap));
-
- Write the image to the named file.
-
- int png_image_write_to_stdio(png_imagep image, FILE *file,
- int convert_to_8_bit, const void *buffer,
- png_int_32 row_stride, const void *colormap)
-
- Write the image to the given (FILE*).
-
-With all write APIs if image is in one of the linear formats with
-(png_uint_16) data then setting convert_to_8_bit will cause the output to be
-a (png_byte) PNG gamma encoded according to the sRGB specification, otherwise
-a 16-bit linear encoded PNG file is written.
-
-With all APIs row_stride is handled as in the read APIs - it is the spacing
-from one row to the next in component sized units (float) and if negative
-indicates a bottom-up row layout in the buffer.
-
-Note that the write API does not support interlacing, sub-8-bit pixels,
-and indexed (paletted) images.
-
-.SH VI. Modifying/Customizing libpng
-
-There are two issues here. The first is changing how libpng does
-standard things like memory allocation, input/output, and error handling.
-The second deals with more complicated things like adding new chunks,
-adding new transformations, and generally changing how libpng works.
-Both of those are compile-time issues; that is, they are generally
-determined at the time the code is written, and there is rarely a need
-to provide the user with a means of changing them.
-
-Memory allocation, input/output, and error handling
-
-All of the memory allocation, input/output, and error handling in libpng
-goes through callbacks that are user-settable. The default routines are
-in pngmem.c, pngrio.c, pngwio.c, and pngerror.c, respectively. To change
-these functions, call the appropriate png_set_*_fn() function.
-
-Memory allocation is done through the functions png_malloc(), png_calloc(),
-and png_free(). The png_malloc() and png_free() functions currently just
-call the standard C functions and png_calloc() calls png_malloc() and then
-clears the newly allocated memory to zero; note that png_calloc(png_ptr, size)
-is not the same as the calloc(number, size) function provided by stdlib.h.
-There is limited support for certain systems with segmented memory
-architectures and the types of pointers declared by png.h match this; you
-will have to use appropriate pointers in your application. Since it is
-unlikely that the method of handling memory allocation on a platform
-will change between applications, these functions must be modified in
-the library at compile time. If you prefer to use a different method
-of allocating and freeing data, you can use png_create_read_struct_2() or
-png_create_write_struct_2() to register your own functions as described
-above. These functions also provide a void pointer that can be retrieved
-via
-
- mem_ptr=png_get_mem_ptr(png_ptr);
-
-Your replacement memory functions must have prototypes as follows:
-
- png_voidp malloc_fn(png_structp png_ptr,
- png_alloc_size_t size);
-
- void free_fn(png_structp png_ptr, png_voidp ptr);
-
-Your malloc_fn() must return NULL in case of failure. The png_malloc()
-function will normally call png_error() if it receives a NULL from the
-system memory allocator or from your replacement malloc_fn().
-
-Your free_fn() will never be called with a NULL ptr, since libpng's
-png_free() checks for NULL before calling free_fn().
-
-Input/Output in libpng is done through png_read() and png_write(),
-which currently just call fread() and fwrite(). The FILE * is stored in
-png_struct and is initialized via png_init_io(). If you wish to change
-the method of I/O, the library supplies callbacks that you can set
-through the function png_set_read_fn() and png_set_write_fn() at run
-time, instead of calling the png_init_io() function. These functions
-also provide a void pointer that can be retrieved via the function
-png_get_io_ptr(). For example:
-
- png_set_read_fn(png_structp read_ptr,
- voidp read_io_ptr, png_rw_ptr read_data_fn)
-
- png_set_write_fn(png_structp write_ptr,
- voidp write_io_ptr, png_rw_ptr write_data_fn,
- png_flush_ptr output_flush_fn);
-
- voidp read_io_ptr = png_get_io_ptr(read_ptr);
- voidp write_io_ptr = png_get_io_ptr(write_ptr);
-
-The replacement I/O functions must have prototypes as follows:
-
- void user_read_data(png_structp png_ptr,
- png_bytep data, png_size_t length);
-
- void user_write_data(png_structp png_ptr,
- png_bytep data, png_size_t length);
-
- void user_flush_data(png_structp png_ptr);
-
-The user_read_data() function is responsible for detecting and
-handling end-of-data errors.
-
-Supplying NULL for the read, write, or flush functions sets them back
-to using the default C stream functions, which expect the io_ptr to
-point to a standard *FILE structure. It is probably a mistake
-to use NULL for one of write_data_fn and output_flush_fn but not both
-of them, unless you have built libpng with PNG_NO_WRITE_FLUSH defined.
-It is an error to read from a write stream, and vice versa.
-
-Error handling in libpng is done through png_error() and png_warning().
-Errors handled through png_error() are fatal, meaning that png_error()
-should never return to its caller. Currently, this is handled via
-setjmp() and longjmp() (unless you have compiled libpng with
-PNG_NO_SETJMP, in which case it is handled via PNG_ABORT()),
-but you could change this to do things like exit() if you should wish,
-as long as your function does not return.
-
-On non-fatal errors, png_warning() is called
-to print a warning message, and then control returns to the calling code.
-By default png_error() and png_warning() print a message on stderr via
-fprintf() unless the library is compiled with PNG_NO_CONSOLE_IO defined
-(because you don't want the messages) or PNG_NO_STDIO defined (because
-fprintf() isn't available). If you wish to change the behavior of the error
-functions, you will need to set up your own message callbacks. These
-functions are normally supplied at the time that the png_struct is created.
-It is also possible to redirect errors and warnings to your own replacement
-functions after png_create_*_struct() has been called by calling:
-
- png_set_error_fn(png_structp png_ptr,
- png_voidp error_ptr, png_error_ptr error_fn,
- png_error_ptr warning_fn);
-
- png_voidp error_ptr = png_get_error_ptr(png_ptr);
-
-If NULL is supplied for either error_fn or warning_fn, then the libpng
-default function will be used, calling fprintf() and/or longjmp() if a
-problem is encountered. The replacement error functions should have
-parameters as follows:
-
- void user_error_fn(png_structp png_ptr,
- png_const_charp error_msg);
-
- void user_warning_fn(png_structp png_ptr,
- png_const_charp warning_msg);
-
-The motivation behind using setjmp() and longjmp() is the C++ throw and
-catch exception handling methods. This makes the code much easier to write,
-as there is no need to check every return code of every function call.
-However, there are some uncertainties about the status of local variables
-after a longjmp, so the user may want to be careful about doing anything
-after setjmp returns non-zero besides returning itself. Consult your
-compiler documentation for more details. For an alternative approach, you
-may wish to use the "cexcept" facility (see http://cexcept.sourceforge.net),
-which is illustrated in pngvalid.c and in contrib/visupng.
-
-Beginning in libpng-1.4.0, the png_set_benign_errors() API became available.
-You can use this to handle certain errors (normally handled as errors)
-as warnings.
-
- png_set_benign_errors (png_ptr, int allowed);
-
- allowed: 0: treat png_benign_error() as an error.
- 1: treat png_benign_error() as a warning.
-
-As of libpng-1.6.0, the default condition is to treat benign errors as
-warnings while reading and as errors while writing.
-
-.SS Custom chunks
-
-If you need to read or write custom chunks, you may need to get deeper
-into the libpng code. The library now has mechanisms for storing
-and writing chunks of unknown type; you can even declare callbacks
-for custom chunks. However, this may not be good enough if the
-library code itself needs to know about interactions between your
-chunk and existing `intrinsic' chunks.
-
-If you need to write a new intrinsic chunk, first read the PNG
-specification. Acquire a first level of understanding of how it works.
-Pay particular attention to the sections that describe chunk names,
-and look at how other chunks were designed, so you can do things
-similarly. Second, check out the sections of libpng that read and
-write chunks. Try to find a chunk that is similar to yours and use
-it as a template. More details can be found in the comments inside
-the code. It is best to handle private or unknown chunks in a generic method,
-via callback functions, instead of by modifying libpng functions. This
-is illustrated in pngtest.c, which uses a callback function to handle a
-private "vpAg" chunk and the new "sTER" chunk, which are both unknown to
-libpng.
-
-If you wish to write your own transformation for the data, look through
-the part of the code that does the transformations, and check out some of
-the simpler ones to get an idea of how they work. Try to find a similar
-transformation to the one you want to add and copy off of it. More details
-can be found in the comments inside the code itself.
-
-.SS Configuring for 16-bit platforms
-
-You will want to look into zconf.h to tell zlib (and thus libpng) that
-it cannot allocate more then 64K at a time. Even if you can, the memory
-won't be accessible. So limit zlib and libpng to 64K by defining MAXSEG_64K.
-
-.SS Configuring for DOS
-
-For DOS users who only have access to the lower 640K, you will
-have to limit zlib's memory usage via a png_set_compression_mem_level()
-call. See zlib.h or zconf.h in the zlib library for more information.
-
-.SS Configuring for Medium Model
-
-Libpng's support for medium model has been tested on most of the popular
-compilers. Make sure MAXSEG_64K gets defined, USE_FAR_KEYWORD gets
-defined, and FAR gets defined to far in pngconf.h, and you should be
-all set. Everything in the library (except for zlib's structure) is
-expecting far data. You must use the typedefs with the p or pp on
-the end for pointers (or at least look at them and be careful). Make
-note that the rows of data are defined as png_bytepp, which is
-an "unsigned char far * far *".
-
-.SS Configuring for gui/windowing platforms:
-
-You will need to write new error and warning functions that use the GUI
-interface, as described previously, and set them to be the error and
-warning functions at the time that png_create_*_struct() is called,
-in order to have them available during the structure initialization.
-They can be changed later via png_set_error_fn(). On some compilers,
-you may also have to change the memory allocators (png_malloc, etc.).
-
-.SS Configuring for compiler xxx:
-
-All includes for libpng are in pngconf.h. If you need to add, change
-or delete an include, this is the place to do it.
-The includes that are not needed outside libpng are placed in pngpriv.h,
-which is only used by the routines inside libpng itself.
-The files in libpng proper only include pngpriv.h and png.h, which
-%14%in turn includes pngconf.h.
-in turn includes pngconf.h and, as of libpng-1.5.0, pnglibconf.h.
-As of libpng-1.5.0, pngpriv.h also includes three other private header
-files, pngstruct.h, pnginfo.h, and pngdebug.h, which contain material
-that previously appeared in the public headers.
-
-.SS Configuring zlib:
-
-There are special functions to configure the compression. Perhaps the
-most useful one changes the compression level, which currently uses
-input compression values in the range 0 - 9. The library normally
-uses the default compression level (Z_DEFAULT_COMPRESSION = 6). Tests
-have shown that for a large majority of images, compression values in
-the range 3-6 compress nearly as well as higher levels, and do so much
-faster. For online applications it may be desirable to have maximum speed
-(Z_BEST_SPEED = 1). With versions of zlib after v0.99, you can also
-specify no compression (Z_NO_COMPRESSION = 0), but this would create
-files larger than just storing the raw bitmap. You can specify the
-compression level by calling:
-
- #include zlib.h
- png_set_compression_level(png_ptr, level);
-
-Another useful one is to reduce the memory level used by the library.
-The memory level defaults to 8, but it can be lowered if you are
-short on memory (running DOS, for example, where you only have 640K).
-Note that the memory level does have an effect on compression; among
-other things, lower levels will result in sections of incompressible
-data being emitted in smaller stored blocks, with a correspondingly
-larger relative overhead of up to 15% in the worst case.
-
- #include zlib.h
- png_set_compression_mem_level(png_ptr, level);
-
-The other functions are for configuring zlib. They are not recommended
-for normal use and may result in writing an invalid PNG file. See
-zlib.h for more information on what these mean.
-
- #include zlib.h
- png_set_compression_strategy(png_ptr,
- strategy);
-
- png_set_compression_window_bits(png_ptr,
- window_bits);
-
- png_set_compression_method(png_ptr, method);
-
- png_set_compression_buffer_size(png_ptr, size);
-
-As of libpng version 1.5.4, additional APIs became
-available to set these separately for non-IDAT
-compressed chunks such as zTXt, iTXt, and iCCP:
-
- #include zlib.h
- #if PNG_LIBPNG_VER >= 10504
- png_set_text_compression_level(png_ptr, level);
-
- png_set_text_compression_mem_level(png_ptr, level);
-
- png_set_text_compression_strategy(png_ptr,
- strategy);
-
- png_set_text_compression_window_bits(png_ptr,
- window_bits);
-
- png_set_text_compression_method(png_ptr, method);
- #endif
-
-.SS Controlling row filtering
-
-If you want to control whether libpng uses filtering or not, which
-filters are used, and how it goes about picking row filters, you
-can call one of these functions. The selection and configuration
-of row filters can have a significant impact on the size and
-encoding speed and a somewhat lesser impact on the decoding speed
-of an image. Filtering is enabled by default for RGB and grayscale
-images (with and without alpha), but not for paletted images nor
-for any images with bit depths less than 8 bits/pixel.
-
-The 'method' parameter sets the main filtering method, which is
-currently only '0' in the PNG 1.2 specification. The 'filters'
-parameter sets which filter(s), if any, should be used for each
-scanline. Possible values are PNG_ALL_FILTERS and PNG_NO_FILTERS
-to turn filtering on and off, respectively.
-
-Individual filter types are PNG_FILTER_NONE, PNG_FILTER_SUB,
-PNG_FILTER_UP, PNG_FILTER_AVG, PNG_FILTER_PAETH, which can be bitwise
-ORed together with '|' to specify one or more filters to use.
-These filters are described in more detail in the PNG specification.
-If you intend to change the filter type during the course of writing
-the image, you should start with flags set for all of the filters
-you intend to use so that libpng can initialize its internal
-structures appropriately for all of the filter types. (Note that this
-means the first row must always be adaptively filtered, because libpng
-currently does not allocate the filter buffers until png_write_row()
-is called for the first time.)
-
- filters = PNG_FILTER_NONE | PNG_FILTER_SUB
- PNG_FILTER_UP | PNG_FILTER_AVG |
- PNG_FILTER_PAETH | PNG_ALL_FILTERS;
-
- png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE,
- filters);
- The second parameter can also be
- PNG_INTRAPIXEL_DIFFERENCING if you are
- writing a PNG to be embedded in a MNG
- datastream. This parameter must be the
- same as the value of filter_method used
- in png_set_IHDR().
-
-It is also possible to influence how libpng chooses from among the
-available filters. This is done in one or both of two ways - by
-telling it how important it is to keep the same filter for successive
-rows, and by telling it the relative computational costs of the filters.
-
- double weights[3] = {1.5, 1.3, 1.1},
- costs[PNG_FILTER_VALUE_LAST] =
- {1.0, 1.3, 1.3, 1.5, 1.7};
-
- png_set_filter_heuristics(png_ptr,
- PNG_FILTER_HEURISTIC_WEIGHTED, 3,
- weights, costs);
-
-The weights are multiplying factors that indicate to libpng that the
-row filter should be the same for successive rows unless another row filter
-is that many times better than the previous filter. In the above example,
-if the previous 3 filters were SUB, SUB, NONE, the SUB filter could have a
-"sum of absolute differences" 1.5 x 1.3 times higher than other filters
-and still be chosen, while the NONE filter could have a sum 1.1 times
-higher than other filters and still be chosen. Unspecified weights are
-taken to be 1.0, and the specified weights should probably be declining
-like those above in order to emphasize recent filters over older filters.
-
-The filter costs specify for each filter type a relative decoding cost
-to be considered when selecting row filters. This means that filters
-with higher costs are less likely to be chosen over filters with lower
-costs, unless their "sum of absolute differences" is that much smaller.
-The costs do not necessarily reflect the exact computational speeds of
-the various filters, since this would unduly influence the final image
-size.
-
-Note that the numbers above were invented purely for this example and
-are given only to help explain the function usage. Little testing has
-been done to find optimum values for either the costs or the weights.
-
-.SS Removing unwanted object code
-
-There are a bunch of #define's in pngconf.h that control what parts of
-libpng are compiled. All the defines end in _SUPPORTED. If you are
-never going to use a capability, you can change the #define to #undef
-before recompiling libpng and save yourself code and data space, or
-you can turn off individual capabilities with defines that begin with
-PNG_NO_.
-
-In libpng-1.5.0 and later, the #define's are in pnglibconf.h instead.
-
-You can also turn all of the transforms and ancillary chunk capabilities
-off en masse with compiler directives that define
-PNG_NO_READ[or WRITE]_TRANSFORMS, or PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS,
-or all four,
-along with directives to turn on any of the capabilities that you do
-want. The PNG_NO_READ[or WRITE]_TRANSFORMS directives disable the extra
-transformations but still leave the library fully capable of reading
-and writing PNG files with all known public chunks. Use of the
-PNG_NO_READ[or WRITE]_ANCILLARY_CHUNKS directive produces a library
-that is incapable of reading or writing ancillary chunks. If you are
-not using the progressive reading capability, you can turn that off
-with PNG_NO_PROGRESSIVE_READ (don't confuse this with the INTERLACING
-capability, which you'll still have).
-
-All the reading and writing specific code are in separate files, so the
-linker should only grab the files it needs. However, if you want to
-make sure, or if you are building a stand alone library, all the
-reading files start with "pngr" and all the writing files start with "pngw".
-The files that don't match either (like png.c, pngtrans.c, etc.)
-are used for both reading and writing, and always need to be included.
-The progressive reader is in pngpread.c
-
-If you are creating or distributing a dynamically linked library (a .so
-or DLL file), you should not remove or disable any parts of the library,
-as this will cause applications linked with different versions of the
-library to fail if they call functions not available in your library.
-The size of the library itself should not be an issue, because only
-those sections that are actually used will be loaded into memory.
-
-.SS Requesting debug printout
-
-The macro definition PNG_DEBUG can be used to request debugging
-printout. Set it to an integer value in the range 0 to 3. Higher
-numbers result in increasing amounts of debugging information. The
-information is printed to the "stderr" file, unless another file
-name is specified in the PNG_DEBUG_FILE macro definition.
-
-When PNG_DEBUG > 0, the following functions (macros) become available:
-
- png_debug(level, message)
- png_debug1(level, message, p1)
- png_debug2(level, message, p1, p2)
-
-in which "level" is compared to PNG_DEBUG to decide whether to print
-the message, "message" is the formatted string to be printed,
-and p1 and p2 are parameters that are to be embedded in the string
-according to printf-style formatting directives. For example,
-
- png_debug1(2, "foo=%d", foo);
-
-is expanded to
-
- if (PNG_DEBUG > 2)
- fprintf(PNG_DEBUG_FILE, "foo=%d\en", foo);
-
-When PNG_DEBUG is defined but is zero, the macros aren't defined, but you
-can still use PNG_DEBUG to control your own debugging:
-
- #ifdef PNG_DEBUG
- fprintf(stderr, ...
- #endif
-
-When PNG_DEBUG = 1, the macros are defined, but only png_debug statements
-having level = 0 will be printed. There aren't any such statements in
-this version of libpng, but if you insert some they will be printed.
-
-.SS Prepending a prefix to exported symbols
-
-Starting with libpng-1.6.0, you can configure libpng (when using the
-"configure" script) to prefix all exported symbols by means of the
-configuration option "--with-libpng-prefix=FOO_", where FOO_ can be any
-string beginning with a letter and containing only uppercase
-and lowercase letters, digits, and the underscore (i.e., a C language
-identifier). This creates a set of macros in pnglibconf.h, so this is
-transparent to applications; their function calls get transformed by
-the macros to use the modified names.
-
-.SH VII. MNG support
-
-The MNG specification (available at http://www.libpng.org/pub/mng) allows
-certain extensions to PNG for PNG images that are embedded in MNG datastreams.
-Libpng can support some of these extensions. To enable them, use the
-png_permit_mng_features() function:
-
- feature_set = png_permit_mng_features(png_ptr, mask)
-
- mask is a png_uint_32 containing the bitwise OR of the
- features you want to enable. These include
- PNG_FLAG_MNG_EMPTY_PLTE
- PNG_FLAG_MNG_FILTER_64
- PNG_ALL_MNG_FEATURES
-
- feature_set is a png_uint_32 that is the bitwise AND of
- your mask with the set of MNG features that is
- supported by the version of libpng that you are using.
-
-It is an error to use this function when reading or writing a standalone
-PNG file with the PNG 8-byte signature. The PNG datastream must be wrapped
-in a MNG datastream. As a minimum, it must have the MNG 8-byte signature
-and the MHDR and MEND chunks. Libpng does not provide support for these
-or any other MNG chunks; your application must provide its own support for
-them. You may wish to consider using libmng (available at
-http://www.libmng.com) instead.
-
-.SH VIII. Changes to Libpng from version 0.88
-
-It should be noted that versions of libpng later than 0.96 are not
-distributed by the original libpng author, Guy Schalnat, nor by
-Andreas Dilger, who had taken over from Guy during 1996 and 1997, and
-distributed versions 0.89 through 0.96, but rather by another member
-of the original PNG Group, Glenn Randers-Pehrson. Guy and Andreas are
-still alive and well, but they have moved on to other things.
-
-The old libpng functions png_read_init(), png_write_init(),
-png_info_init(), png_read_destroy(), and png_write_destroy() have been
-moved to PNG_INTERNAL in version 0.95 to discourage their use. These
-functions will be removed from libpng version 1.4.0.
-
-The preferred method of creating and initializing the libpng structures is
-via the png_create_read_struct(), png_create_write_struct(), and
-png_create_info_struct() because they isolate the size of the structures
-from the application, allow version error checking, and also allow the
-use of custom error handling routines during the initialization, which
-the old functions do not. The functions png_read_destroy() and
-png_write_destroy() do not actually free the memory that libpng
-allocated for these structs, but just reset the data structures, so they
-can be used instead of png_destroy_read_struct() and
-png_destroy_write_struct() if you feel there is too much system overhead
-allocating and freeing the png_struct for each image read.
-
-Setting the error callbacks via png_set_message_fn() before
-png_read_init() as was suggested in libpng-0.88 is no longer supported
-because this caused applications that do not use custom error functions
-to fail if the png_ptr was not initialized to zero. It is still possible
-to set the error callbacks AFTER png_read_init(), or to change them with
-png_set_error_fn(), which is essentially the same function, but with a new
-name to force compilation errors with applications that try to use the old
-method.
-
-Starting with version 1.0.7, you can find out which version of the library
-you are using at run-time:
-
- png_uint_32 libpng_vn = png_access_version_number();
-
-The number libpng_vn is constructed from the major version, minor
-version with leading zero, and release number with leading zero,
-(e.g., libpng_vn for version 1.0.7 is 10007).
-
-Note that this function does not take a png_ptr, so you can call it
-before you've created one.
-
-You can also check which version of png.h you used when compiling your
-application:
-
- png_uint_32 application_vn = PNG_LIBPNG_VER;
-
-.SH IX. Changes to Libpng from version 1.0.x to 1.2.x
-
-Support for user memory management was enabled by default. To
-accomplish this, the functions png_create_read_struct_2(),
-png_create_write_struct_2(), png_set_mem_fn(), png_get_mem_ptr(),
-png_malloc_default(), and png_free_default() were added.
-
-Support for the iTXt chunk has been enabled by default as of
-version 1.2.41.
-
-Support for certain MNG features was enabled.
-
-Support for numbered error messages was added. However, we never got
-around to actually numbering the error messages. The function
-png_set_strip_error_numbers() was added (Note: the prototype for this
-function was inadvertently removed from png.h in PNG_NO_ASSEMBLER_CODE
-builds of libpng-1.2.15. It was restored in libpng-1.2.36).
-
-The png_malloc_warn() function was added at libpng-1.2.3. This issues
-a png_warning and returns NULL instead of aborting when it fails to
-acquire the requested memory allocation.
-
-Support for setting user limits on image width and height was enabled
-by default. The functions png_set_user_limits(), png_get_user_width_max(),
-and png_get_user_height_max() were added at libpng-1.2.6.
-
-The png_set_add_alpha() function was added at libpng-1.2.7.
-
-The function png_set_expand_gray_1_2_4_to_8() was added at libpng-1.2.9.
-Unlike png_set_gray_1_2_4_to_8(), the new function does not expand the
-tRNS chunk to alpha. The png_set_gray_1_2_4_to_8() function is
-deprecated.
-
-A number of macro definitions in support of runtime selection of
-assembler code features (especially Intel MMX code support) were
-added at libpng-1.2.0:
-
- PNG_ASM_FLAG_MMX_SUPPORT_COMPILED
- PNG_ASM_FLAG_MMX_SUPPORT_IN_CPU
- PNG_ASM_FLAG_MMX_READ_COMBINE_ROW
- PNG_ASM_FLAG_MMX_READ_INTERLACE
- PNG_ASM_FLAG_MMX_READ_FILTER_SUB
- PNG_ASM_FLAG_MMX_READ_FILTER_UP
- PNG_ASM_FLAG_MMX_READ_FILTER_AVG
- PNG_ASM_FLAG_MMX_READ_FILTER_PAETH
- PNG_ASM_FLAGS_INITIALIZED
- PNG_MMX_READ_FLAGS
- PNG_MMX_FLAGS
- PNG_MMX_WRITE_FLAGS
- PNG_MMX_FLAGS
-
-We added the following functions in support of runtime
-selection of assembler code features:
-
- png_get_mmx_flagmask()
- png_set_mmx_thresholds()
- png_get_asm_flags()
- png_get_mmx_bitdepth_threshold()
- png_get_mmx_rowbytes_threshold()
- png_set_asm_flags()
-
-We replaced all of these functions with simple stubs in libpng-1.2.20,
-when the Intel assembler code was removed due to a licensing issue.
-
-These macros are deprecated:
-
- PNG_READ_TRANSFORMS_NOT_SUPPORTED
- PNG_PROGRESSIVE_READ_NOT_SUPPORTED
- PNG_NO_SEQUENTIAL_READ_SUPPORTED
- PNG_WRITE_TRANSFORMS_NOT_SUPPORTED
- PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
- PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
-
-They have been replaced, respectively, by:
-
- PNG_NO_READ_TRANSFORMS
- PNG_NO_PROGRESSIVE_READ
- PNG_NO_SEQUENTIAL_READ
- PNG_NO_WRITE_TRANSFORMS
- PNG_NO_READ_ANCILLARY_CHUNKS
- PNG_NO_WRITE_ANCILLARY_CHUNKS
-
-PNG_MAX_UINT was replaced with PNG_UINT_31_MAX. It has been
-deprecated since libpng-1.0.16 and libpng-1.2.6.
-
-The function
- png_check_sig(sig, num)
-was replaced with
- !png_sig_cmp(sig, 0, num)
-It has been deprecated since libpng-0.90.
-
-The function
- png_set_gray_1_2_4_to_8()
-which also expands tRNS to alpha was replaced with
- png_set_expand_gray_1_2_4_to_8()
-which does not. It has been deprecated since libpng-1.0.18 and 1.2.9.
-
-.SH X. Changes to Libpng from version 1.0.x/1.2.x to 1.4.x
-
-Private libpng prototypes and macro definitions were moved from
-png.h and pngconf.h into a new pngpriv.h header file.
-
-Functions png_set_benign_errors(), png_benign_error(), and
-png_chunk_benign_error() were added.
-
-Support for setting the maximum amount of memory that the application
-will allocate for reading chunks was added, as a security measure.
-The functions png_set_chunk_cache_max() and png_get_chunk_cache_max()
-were added to the library.
-
-We implemented support for I/O states by adding png_ptr member io_state
-and functions png_get_io_chunk_name() and png_get_io_state() in pngget.c
-
-We added PNG_TRANSFORM_GRAY_TO_RGB to the available high-level
-input transforms.
-
-Checking for and reporting of errors in the IHDR chunk is more thorough.
-
-Support for global arrays was removed, to improve thread safety.
-
-Some obsolete/deprecated macros and functions have been removed.
-
-Typecasted NULL definitions such as
- #define png_voidp_NULL (png_voidp)NULL
-were eliminated. If you used these in your application, just use
-NULL instead.
-
-The png_struct and info_struct members "trans" and "trans_values" were
-changed to "trans_alpha" and "trans_color", respectively.
-
-The obsolete, unused pnggccrd.c and pngvcrd.c files and related makefiles
-were removed.
-
-The PNG_1_0_X and PNG_1_2_X macros were eliminated.
-
-The PNG_LEGACY_SUPPORTED macro was eliminated.
-
-Many WIN32_WCE #ifdefs were removed.
-
-The functions png_read_init(info_ptr), png_write_init(info_ptr),
-png_info_init(info_ptr), png_read_destroy(), and png_write_destroy()
-have been removed. They have been deprecated since libpng-0.95.
-
-The png_permit_empty_plte() was removed. It has been deprecated
-since libpng-1.0.9. Use png_permit_mng_features() instead.
-
-We removed the obsolete stub functions png_get_mmx_flagmask(),
-png_set_mmx_thresholds(), png_get_asm_flags(),
-png_get_mmx_bitdepth_threshold(), png_get_mmx_rowbytes_threshold(),
-png_set_asm_flags(), and png_mmx_supported()
-
-We removed the obsolete png_check_sig(), png_memcpy_check(), and
-png_memset_check() functions. Instead use !png_sig_cmp(), memcpy(),
-and memset(), respectively.
-
-The function png_set_gray_1_2_4_to_8() was removed. It has been
-deprecated since libpng-1.0.18 and 1.2.9, when it was replaced with
-png_set_expand_gray_1_2_4_to_8() because the former function also
-expanded any tRNS chunk to an alpha channel.
-
-Macros for png_get_uint_16, png_get_uint_32, and png_get_int_32
-were added and are used by default instead of the corresponding
-functions. Unfortunately,
-from libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
-function) incorrectly returned a value of type png_uint_32.
-
-We changed the prototype for png_malloc() from
- png_malloc(png_structp png_ptr, png_uint_32 size)
-to
- png_malloc(png_structp png_ptr, png_alloc_size_t size)
-
-This also applies to the prototype for the user replacement malloc_fn().
-
-The png_calloc() function was added and is used in place of
-of "png_malloc(); memset();" except in the case in png_read_png()
-where the array consists of pointers; in this case a "for" loop is used
-after the png_malloc() to set the pointers to NULL, to give robust.
-behavior in case the application runs out of memory part-way through
-the process.
-
-We changed the prototypes of png_get_compression_buffer_size() and
-png_set_compression_buffer_size() to work with png_size_t instead of
-png_uint_32.
-
-Support for numbered error messages was removed by default, since we
-never got around to actually numbering the error messages. The function
-png_set_strip_error_numbers() was removed from the library by default.
-
-The png_zalloc() and png_zfree() functions are no longer exported.
-The png_zalloc() function no longer zeroes out the memory that it
-allocates. Applications that called png_zalloc(png_ptr, number, size)
-can call png_calloc(png_ptr, number*size) instead, and can call
-png_free() instead of png_zfree().
-
-Support for dithering was disabled by default in libpng-1.4.0, because
-it has not been well tested and doesn't actually "dither".
-The code was not
-removed, however, and could be enabled by building libpng with
-PNG_READ_DITHER_SUPPORTED defined. In libpng-1.4.2, this support
-was reenabled, but the function was renamed png_set_quantize() to
-reflect more accurately what it actually does. At the same time,
-the PNG_DITHER_[RED,GREEN_BLUE]_BITS macros were also renamed to
-PNG_QUANTIZE_[RED,GREEN,BLUE]_BITS, and PNG_READ_DITHER_SUPPORTED
-was renamed to PNG_READ_QUANTIZE_SUPPORTED.
-
-We removed the trailing '.' from the warning and error messages.
-
-.SH XI. Changes to Libpng from version 1.4.x to 1.5.x
-
-From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
-function) incorrectly returned a value of type png_uint_32.
-
-Checking for invalid palette index on read or write was added at libpng
-1.5.10. When an invalid index is found, libpng issues a benign error.
-This is enabled by default because this condition is an error according
-to the PNG specification, Clause 11.3.2, but the error can be ignored in
-each png_ptr with
-
- png_set_check_for_invalid_index(png_ptr, allowed);
-
- allowed - one of
- 0: disable benign error (accept the
- invalid data without warning).
- 1: enable benign error (treat the
- invalid data as an error or a
- warning).
-
-If the error is ignored, or if png_benign_error() treats it as a warning,
-any invalid pixels are decoded as opaque black by the decoder and written
-as-is by the encoder.
-
-Retrieving the maximum palette index found was added at libpng-1.5.15.
-This statement must appear after png_read_png() or png_read_image() while
-reading, and after png_write_png() or png_write_image() while writing.
-
- int max_palette = png_get_palette_max(png_ptr, info_ptr);
-
-This will return the maximum palette index found in the image, or "-1" if
-the palette was not checked, or "0" if no palette was found. Note that this
-does not account for any palette index used by ancillary chunks such as the
-bKGD chunk; you must check those separately to determine the maximum
-palette index actually used.
-
-A. Changes that affect users of libpng
-
-There are no substantial API changes between the non-deprecated parts of
-the 1.4.5 API and the 1.5.0 API; however, the ability to directly access
-members of the main libpng control structures, png_struct and png_info,
-deprecated in earlier versions of libpng, has been completely removed from
-libpng 1.5.
-
-We no longer include zlib.h in png.h. The include statement has been moved
-to pngstruct.h, where it is not accessible by applications. Applications that
-need access to information in zlib.h will need to add the '#include "zlib.h"'
-directive. It does not matter whether this is placed prior to or after
-the '"#include png.h"' directive.
-
-The png_sprintf(), png_strcpy(), and png_strncpy() macros are no longer used
-and were removed.
-
-We moved the png_strlen(), png_memcpy(), png_memset(), and png_memcmp()
-macros into a private header file (pngpriv.h) that is not accessible to
-applications.
-
-In png_get_iCCP, the type of "profile" was changed from png_charpp
-to png_bytepp, and in png_set_iCCP, from png_charp to png_const_bytep.
-
-There are changes of form in png.h, including new and changed macros to
-declare parts of the API. Some API functions with arguments that are
-pointers to data not modified within the function have been corrected to
-declare these arguments with PNG_CONST.
-
-Much of the internal use of C macros to control the library build has also
-changed and some of this is visible in the exported header files, in
-particular the use of macros to control data and API elements visible
-during application compilation may require significant revision to
-application code. (It is extremely rare for an application to do this.)
-
-Any program that compiled against libpng 1.4 and did not use deprecated
-features or access internal library structures should compile and work
-against libpng 1.5, except for the change in the prototype for
-png_get_iCCP() and png_set_iCCP() API functions mentioned above.
-
-libpng 1.5.0 adds PNG_ PASS macros to help in the reading and writing of
-interlaced images. The macros return the number of rows and columns in
-each pass and information that can be used to de-interlace and (if
-absolutely necessary) interlace an image.
-
-libpng 1.5.0 adds an API png_longjmp(png_ptr, value). This API calls
-the application-provided png_longjmp_ptr on the internal, but application
-initialized, longjmp buffer. It is provided as a convenience to avoid
-the need to use the png_jmpbuf macro, which had the unnecessary side
-effect of resetting the internal png_longjmp_ptr value.
-
-libpng 1.5.0 includes a complete fixed point API. By default this is
-present along with the corresponding floating point API. In general the
-fixed point API is faster and smaller than the floating point one because
-the PNG file format used fixed point, not floating point. This applies
-even if the library uses floating point in internal calculations. A new
-macro, PNG_FLOATING_ARITHMETIC_SUPPORTED, reveals whether the library
-uses floating point arithmetic (the default) or fixed point arithmetic
-internally for performance critical calculations such as gamma correction.
-In some cases, the gamma calculations may produce slightly different
-results. This has changed the results in png_rgb_to_gray and in alpha
-composition (png_set_background for example). This applies even if the
-original image was already linear (gamma == 1.0) and, therefore, it is
-not necessary to linearize the image. This is because libpng has *not*
-been changed to optimize that case correctly, yet.
-
-Fixed point support for the sCAL chunk comes with an important caveat;
-the sCAL specification uses a decimal encoding of floating point values
-and the accuracy of PNG fixed point values is insufficient for
-representation of these values. Consequently a "string" API
-(png_get_sCAL_s and png_set_sCAL_s) is the only reliable way of reading
-arbitrary sCAL chunks in the absence of either the floating point API or
-internal floating point calculations.
-
-Applications no longer need to include the optional distribution header
-file pngusr.h or define the corresponding macros during application
-build in order to see the correct variant of the libpng API. From 1.5.0
-application code can check for the corresponding _SUPPORTED macro:
-
-#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
- /* code that uses the inch conversion APIs. */
-#endif
-
-This macro will only be defined if the inch conversion functions have been
-compiled into libpng. The full set of macros, and whether or not support
-has been compiled in, are available in the header file pnglibconf.h.
-This header file is specific to the libpng build. Notice that prior to
-1.5.0 the _SUPPORTED macros would always have the default definition unless
-reset by pngusr.h or by explicit settings on the compiler command line.
-These settings may produce compiler warnings or errors in 1.5.0 because
-of macro redefinition.
-
-From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
-function) incorrectly returned a value of type png_uint_32. libpng 1.5.0
-is consistent with the implementation in 1.4.5 and 1.2.x (where the macro
-did not exist.)
-
-Applications can now choose whether to use these macros or to call the
-corresponding function by defining PNG_USE_READ_MACROS or
-PNG_NO_USE_READ_MACROS before including png.h. Notice that this is
-only supported from 1.5.0 -defining PNG_NO_USE_READ_MACROS prior to 1.5.0
-will lead to a link failure.
-
-Prior to libpng-1.5.4, the zlib compressor used the same set of parameters
-when compressing the IDAT data and textual data such as zTXt and iCCP.
-In libpng-1.5.4 we reinitialized the zlib stream for each type of data.
-We added five png_set_text_*() functions for setting the parameters to
-use with textual data.
-
-Prior to libpng-1.5.4, the PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
-option was off by default, and slightly inaccurate scaling occurred.
-This option can no longer be turned off, and the choice of accurate
-or inaccurate 16-to-8 scaling is by using the new png_set_scale_16_to_8()
-API for accurate scaling or the old png_set_strip_16_to_8() API for simple
-chopping.
-
-Prior to libpng-1.5.4, the png_set_user_limits() function could only be
-used to reduce the width and height limits from the value of
-PNG_USER_WIDTH_MAX and PNG_USER_HEIGHT_MAX, although this document said
-that it could be used to override them. Now this function will reduce or
-increase the limits.
-
-Starting in libpng-1.5.10, the user limits can be set en masse with the
-configuration option PNG_SAFE_LIMITS_SUPPORTED. If this option is enabled,
-a set of "safe" limits is applied in pngpriv.h. These can be overridden by
-application calls to png_set_user_limits(), png_set_user_chunk_cache_max(),
-and/or png_set_user_malloc_max() that increase or decrease the limits. Also,
-in libpng-1.5.10 the default width and height limits were increased
-from 1,000,000 to 0x7ffffff (i.e., made unlimited). Therefore, the
-limits are now
- default safe
- png_user_width_max 0x7fffffff 1,000,000
- png_user_height_max 0x7fffffff 1,000,000
- png_user_chunk_cache_max 0 (unlimited) 128
- png_user_chunk_malloc_max 0 (unlimited) 8,000,000
-
-B. Changes to the build and configuration of libpng
-
-Details of internal changes to the library code can be found in the CHANGES
-file and in the GIT repository logs. These will be of no concern to the vast
-majority of library users or builders; however, the few who configure libpng
-to a non-default feature set may need to change how this is done.
-
-There should be no need for library builders to alter build scripts if
-these use the distributed build support - configure or the makefiles -
-however, users of the makefiles may care to update their build scripts
-to build pnglibconf.h where the corresponding makefile does not do so.
-
-Building libpng with a non-default configuration has changed completely.
-The old method using pngusr.h should still work correctly even though the
-way pngusr.h is used in the build has been changed; however, library
-builders will probably want to examine the changes to take advantage of
-new capabilities and to simplify their build system.
-
-B.1 Specific changes to library configuration capabilities
-
-The library now supports a complete fixed point implementation and can
-thus be used on systems that have no floating point support or very
-limited or slow support. Previously gamma correction, an essential part
-of complete PNG support, required reasonably fast floating point.
-
-As part of this the choice of internal implementation has been made
-independent of the choice of fixed versus floating point APIs and all the
-missing fixed point APIs have been implemented.
-
-The exact mechanism used to control attributes of API functions has
-changed. A single set of operating system independent macro definitions
-is used and operating system specific directives are defined in
-pnglibconf.h
-
-As part of this the mechanism used to choose procedure call standards on
-those systems that allow a choice has been changed. At present this only
-affects certain Microsoft (DOS, Windows) and IBM (OS/2) operating systems
-running on Intel processors. As before, PNGAPI is defined where required
-to control the exported API functions; however, two new macros, PNGCBAPI
-and PNGCAPI, are used instead for callback functions (PNGCBAPI) and
-(PNGCAPI) for functions that must match a C library prototype (currently
-only png_longjmp_ptr, which must match the C longjmp function.) The new
-approach is documented in pngconf.h
-
-Despite these changes, libpng 1.5.0 only supports the native C function
-calling standard on those platforms tested so far (__cdecl on Microsoft
-Windows). This is because the support requirements for alternative
-calling conventions seem to no longer exist. Developers who find it
-necessary to set PNG_API_RULE to 1 should advise the mailing list
-(png-mng-implement) of this and library builders who use Openwatcom and
-therefore set PNG_API_RULE to 2 should also contact the mailing list.
-
-A new test program, pngvalid, is provided in addition to pngtest.
-pngvalid validates the arithmetic accuracy of the gamma correction
-calculations and includes a number of validations of the file format.
-A subset of the full range of tests is run when "make check" is done
-(in the 'configure' build.) pngvalid also allows total allocated memory
-usage to be evaluated and performs additional memory overwrite validation.
-
-Many changes to individual feature macros have been made. The following
-are the changes most likely to be noticed by library builders who
-configure libpng:
-
-1) All feature macros now have consistent naming:
-
-#define PNG_NO_feature turns the feature off
-#define PNG_feature_SUPPORTED turns the feature on
-
-pnglibconf.h contains one line for each feature macro which is either:
-
-#define PNG_feature_SUPPORTED
-
-if the feature is supported or:
-
-/*#undef PNG_feature_SUPPORTED*/
-
-if it is not. Library code consistently checks for the 'SUPPORTED' macro.
-It does not, and libpng applications should not, check for the 'NO' macro
-which will not normally be defined even if the feature is not supported.
-The 'NO' macros are only used internally for setting or not setting the
-corresponding 'SUPPORTED' macros.
-
-Compatibility with the old names is provided as follows:
-
-PNG_INCH_CONVERSIONS turns on PNG_INCH_CONVERSIONS_SUPPORTED
-
-And the following definitions disable the corresponding feature:
-
-PNG_SETJMP_NOT_SUPPORTED disables SETJMP
-PNG_READ_TRANSFORMS_NOT_SUPPORTED disables READ_TRANSFORMS
-PNG_NO_READ_COMPOSITED_NODIV disables READ_COMPOSITE_NODIV
-PNG_WRITE_TRANSFORMS_NOT_SUPPORTED disables WRITE_TRANSFORMS
-PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED disables READ_ANCILLARY_CHUNKS
-PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED disables WRITE_ANCILLARY_CHUNKS
-
-Library builders should remove use of the above, inconsistent, names.
-
-2) Warning and error message formatting was previously conditional on
-the STDIO feature. The library has been changed to use the
-CONSOLE_IO feature instead. This means that if CONSOLE_IO is disabled
-the library no longer uses the printf(3) functions, even though the
-default read/write implementations use (FILE) style stdio.h functions.
-
-3) Three feature macros now control the fixed/floating point decisions:
-
-PNG_FLOATING_POINT_SUPPORTED enables the floating point APIs
-
-PNG_FIXED_POINT_SUPPORTED enables the fixed point APIs; however, in
-practice these are normally required internally anyway (because the PNG
-file format is fixed point), therefore in most cases PNG_NO_FIXED_POINT
-merely stops the function from being exported.
-
-PNG_FLOATING_ARITHMETIC_SUPPORTED chooses between the internal floating
-point implementation or the fixed point one. Typically the fixed point
-implementation is larger and slower than the floating point implementation
-on a system that supports floating point; however, it may be faster on a
-system which lacks floating point hardware and therefore uses a software
-emulation.
-
-4) Added PNG_{READ,WRITE}_INT_FUNCTIONS_SUPPORTED. This allows the
-functions to read and write ints to be disabled independently of
-PNG_USE_READ_MACROS, which allows libpng to be built with the functions
-even though the default is to use the macros - this allows applications
-to choose at app buildtime whether or not to use macros (previously
-impossible because the functions weren't in the default build.)
-
-B.2 Changes to the configuration mechanism
-
-Prior to libpng-1.5.0 library builders who needed to configure libpng
-had either to modify the exported pngconf.h header file to add system
-specific configuration or had to write feature selection macros into
-pngusr.h and cause this to be included into pngconf.h by defining
-PNG_USER_CONFIG. The latter mechanism had the disadvantage that an
-application built without PNG_USER_CONFIG defined would see the
-unmodified, default, libpng API and thus would probably fail to link.
-
-These mechanisms still work in the configure build and in any makefile
-build that builds pnglibconf.h, although the feature selection macros
-have changed somewhat as described above. In 1.5.0, however, pngusr.h is
-processed only once, when the exported header file pnglibconf.h is built.
-pngconf.h no longer includes pngusr.h, therefore pngusr.h is ignored after the
-build of pnglibconf.h and it is never included in an application build.
-
-The rarely used alternative of adding a list of feature macros to the
-CFLAGS setting in the build also still works; however, the macros will be
-copied to pnglibconf.h and this may produce macro redefinition warnings
-when the individual C files are compiled.
-
-All configuration now only works if pnglibconf.h is built from
-scripts/pnglibconf.dfa. This requires the program awk. Brian Kernighan
-(the original author of awk) maintains C source code of that awk and this
-and all known later implementations (often called by subtly different
-names - nawk and gawk for example) are adequate to build pnglibconf.h.
-The Sun Microsystems (now Oracle) program 'awk' is an earlier version
-and does not work; this may also apply to other systems that have a
-functioning awk called 'nawk'.
-
-Configuration options are now documented in scripts/pnglibconf.dfa. This
-file also includes dependency information that ensures a configuration is
-consistent; that is, if a feature is switched off dependent features are
-also removed. As a recommended alternative to using feature macros in
-pngusr.h a system builder may also define equivalent options in pngusr.dfa
-(or, indeed, any file) and add that to the configuration by setting
-DFA_XTRA to the file name. The makefiles in contrib/pngminim illustrate
-how to do this, and a case where pngusr.h is still required.
-
-.SH XII. Changes to Libpng from version 1.5.x to 1.6.x
-
-A "simplified API" has been added (see documentation in png.h and a simple
-example in contrib/examples/pngtopng.c). The new publicly visible API
-includes the following:
-
- macros:
- PNG_FORMAT_*
- PNG_IMAGE_*
- structures:
- png_control
- png_image
- read functions
- png_image_begin_read_from_file()
- png_image_begin_read_from_stdio()
- png_image_begin_read_from_memory()
- png_image_finish_read()
- png_image_free()
- write functions
- png_image_write_to_file()
- png_image_write_to_stdio()
-
-Starting with libpng-1.6.0, you can configure libpng to prefix all exported
-symbols, using the PNG_PREFIX macro.
-
-We no longer include string.h in png.h. The include statement has been moved
-to pngpriv.h, where it is not accessible by applications. Applications that
-need access to information in string.h must add an '#include <string.h>'
-directive. It does not matter whether this is placed prior to or after
-the '#include "png.h"' directive.
-
-The following API are now DEPRECATED:
- png_info_init_3()
- png_convert_to_rfc1123() which has been replaced
- with png_convert_to_rfc1123_buffer()
- png_data_freer()
- png_malloc_default()
- png_free_default()
- png_reset_zstream()
-
-The following have been removed:
- png_get_io_chunk_name(), which has been replaced
- with png_get_io_chunk_type(). The new
- function returns a 32-bit integer instead of
- a string.
- The png_sizeof(), png_strlen(), png_memcpy(), png_memcmp(), and
- png_memset() macros are no longer used in the libpng sources and
- have been removed. These had already been made invisible to applications
- (i.e., defined in the private pngpriv.h header file) since libpng-1.5.0.
-
-The signatures of many exported functions were changed, such that
- png_structp became png_structrp or png_const_structrp
- png_infop became png_inforp or png_const_inforp
-where "rp" indicates a "restricted pointer".
-
-Error detection in some chunks has improved; in particular the iCCP chunk
-reader now does pretty complete validation of the basic format. Some bad
-profiles that were previously accepted are now rejected, in particular the
-very old broken Microsoft/HP sRGB profile. The PNG spec requirement that
-only grayscale profiles may appear in images with color type 0 or 4 and that
-even if the image only contains gray pixels, only RGB profiles may appear
-in images with color type 2, 3, or 6, is now enforced. The sRGB chunk
-is allowed to appear in images with any color type.
-
-Prior to libpng-1.6.0 a warning would be issued if the iTXt chunk contained
-an empty language field or an empty translated keyword. Both of these
-are allowed by the PNG specification, so these warnings are no longer issued.
-
-The library now issues an error if the application attempts to set a
-transform after it calls png_read_update_info().
-
-The default condition for benign_errors is now to treat benign errors as
-warnings while reading and as errors while writing.
-
-The library now issues a warning if both background processing and RGB to
-gray are used when gamma correction happens. As with previous versions of
-the library the results are numerically very incorrect in this case.
-
-There are some minor arithmetic changes in some transforms such as
-png_set_background(), that might be detected by certain regression tests.
-
-Unknown chunk handling has been improved internally, without any API change.
-This adds more correct option control of the unknown handling, corrects
-a pre-existing bug where the per-chunk 'keep' setting is ignored, and makes
-it possible to skip IDAT chunks in the sequential reader.
-
-The machine-generated configure files are no longer included in branches
-libpng16 and later of the GIT repository. They continue to be included
-in the tarball releases, however.
-
-Libpng-1.6.0 and later use the CMF bytes at the beginning of the IDAT stream
-to set the size of the sliding window for reading instead of using the default
-32-kbyte sliding window size. It was discovered that there are hundreds of PNG
-files in the wild that have incorrect CMF bytes that cause libpng to now issue
-a "too far back" error and reject the file. Libpng-1.6.3 provides a way to
-revert to the libpng-1.5.x behavior (ignoring the CMF bytes and using a
-32-kbyte sliding window), and provides a tool
-(contrib/tools/png-fix-too-far-back) for optimizing the CMF bytes
-correctly.
-
-Libpng-1.6.0 and libpng-1.6.1 wrote uncompressed iTXt chunks with the wrong
-length, which resulted in PNG files that cannot be read beyond the bad iTXt
-chunk. This error was fixed in libpng-1.6.3, and a tool (called
-contrib/tools/png-fix-itxt) has been added to the libpng distribution.
-
-.SH XIII. Detecting libpng
-
-The png_get_io_ptr() function has been present since libpng-0.88, has never
-changed, and is unaffected by conditional compilation macros. It is the
-best choice for use in configure scripts for detecting the presence of any
-libpng version since 0.88. In an autoconf "configure.in" you could use
-
- AC_CHECK_LIB(png, png_get_io_ptr, ...
-
-.SH XV. Source code repository
-
-Since about February 2009, version 1.2.34, libpng has been under "git" source
-control. The git repository was built from old libpng-x.y.z.tar.gz files
-going back to version 0.70. You can access the git repository (read only)
-at
-
- git://git.code.sf.net/p/libpng/code
-
-or you can browse it with a web browser by selecting the "code" button at
-
- https://sourceforge.net/projects/libpng
-
-Patches can be sent to glennrp at users.sourceforge.net or to
-png-mng-implement at lists.sourceforge.net or you can upload them to
-the libpng bug tracker at
-
- http://libpng.sourceforge.net
-
-We also accept patches built from the tar or zip distributions, and
-simple verbal discriptions of bug fixes, reported either to the
-SourceForge bug tracker, to the png-mng-implement at lists.sf.net
-mailing list, or directly to glennrp.
-
-.SH XV. Coding style
-
-Our coding style is similar to the "Allman" style, with curly
-braces on separate lines:
-
- if (condition)
- {
- action;
- }
-
- else if (another condition)
- {
- another action;
- }
-
-The braces can be omitted from simple one-line actions:
-
- if (condition)
- return (0);
-
-We use 3-space indentation, except for continued statements which
-are usually indented the same as the first line of the statement
-plus four more spaces.
-
-For macro definitions we use 2-space indentation, always leaving the "#"
-in the first column.
-
- #ifndef PNG_NO_FEATURE
- # ifndef PNG_FEATURE_SUPPORTED
- # define PNG_FEATURE_SUPPORTED
- # endif
- #endif
-
-Comments appear with the leading "/*" at the same indentation as
-the statement that follows the comment:
-
- /* Single-line comment */
- statement;
-
- /* This is a multiple-line
- * comment.
- */
- statement;
-
-Very short comments can be placed after the end of the statement
-to which they pertain:
-
- statement; /* comment */
-
-We don't use C++ style ("//") comments. We have, however,
-used them in the past in some now-abandoned MMX assembler
-code.
-
-Functions and their curly braces are not indented, and
-exported functions are marked with PNGAPI:
-
- /* This is a public function that is visible to
- * application programmers. It does thus-and-so.
- */
- void PNGAPI
- png_exported_function(png_ptr, png_info, foo)
- {
- body;
- }
-
-The prototypes for all exported functions appear in png.h,
-above the comment that says
-
- /* Maintainer: Put new public prototypes here ... */
-
-We mark all non-exported functions with "/* PRIVATE */"":
-
- void /* PRIVATE */
- png_non_exported_function(png_ptr, png_info, foo)
- {
- body;
- }
-
-The prototypes for non-exported functions (except for those in
-pngtest) appear in
-pngpriv.h
-above the comment that says
-
- /* Maintainer: Put new private prototypes here ^ */
-
-We put a space after the "sizeof" operator and we omit the
-optional parentheses around its argument when the argument
-is an expression, not a type name, and we always enclose the
-sizeof operator, with its argument, in parentheses:
-
- (sizeof (png_uint_32))
- (sizeof array)
-
-Prior to libpng-1.6.0 we used a "png_sizeof()" macro, formatted as
-though it were a function.
-
-To avoid polluting the global namespace, the names of all exported
-functions and variables begin with "png_", and all publicly visible C
-preprocessor macros begin with "PNG". We request that applications that
-use libpng *not* begin any of their own symbols with either of these strings.
-
-We put a space after each comma and after each semicolon
-in "for" statements, and we put spaces before and after each
-C binary operator and after "for" or "while", and before
-"?". We don't put a space between a typecast and the expression
-being cast, nor do we put one between a function name and the
-left parenthesis that follows it:
-
- for (i = 2; i > 0; --i)
- y[i] = a(x) + (int)b;
-
-We prefer #ifdef and #ifndef to #if defined() and #if !defined()
-when there is only one macro being tested. We always use parentheses
-with "defined".
-
-We prefer to express integers that are used as bit masks in hex format,
-with an even number of lower-case hex digits (e.g., 0x00, 0xff, 0x0100).
-
-We prefer to use underscores in variable names rather than camelCase, except
-for a few type names that we inherit from zlib.h.
-
-We do not use the TAB character for indentation in the C sources.
-
-Lines do not exceed 80 characters.
-
-Other rules can be inferred by inspecting the libpng source.
-
-.SH XVI. Y2K Compliance in libpng
-
-July 18, 2013
-
-Since the PNG Development group is an ad-hoc body, we can't make
-an official declaration.
-
-This is your unofficial assurance that libpng from version 0.71 and
-upward through 1.6.3 are Y2K compliant. It is my belief that earlier
-versions were also Y2K compliant.
-
-Libpng only has two year fields. One is a 2-byte unsigned integer
-that will hold years up to 65535. The other, which is deprecated,
-holds the date in text format, and will hold years up to 9999.
-
-The integer is
- "png_uint_16 year" in png_time_struct.
-
-The string is
- "char time_buffer[29]" in png_struct. This is no longer used
-in libpng-1.6.x and will be removed from libpng-1.7.0.
-
-There are seven time-related functions:
-
- png_convert_to_rfc_1123() in png.c
- (formerly png_convert_to_rfc_1152() in error)
- png_convert_from_struct_tm() in pngwrite.c, called
- in pngwrite.c
- png_convert_from_time_t() in pngwrite.c
- png_get_tIME() in pngget.c
- png_handle_tIME() in pngrutil.c, called in pngread.c
- png_set_tIME() in pngset.c
- png_write_tIME() in pngwutil.c, called in pngwrite.c
-
-All appear to handle dates properly in a Y2K environment. The
-png_convert_from_time_t() function calls gmtime() to convert from system
-clock time, which returns (year - 1900), which we properly convert to
-the full 4-digit year. There is a possibility that applications using
-libpng are not passing 4-digit years into the png_convert_to_rfc_1123()
-function, or that they are incorrectly passing only a 2-digit year
-instead of "year - 1900" into the png_convert_from_struct_tm() function,
-but this is not under our control. The libpng documentation has always
-stated that it works with 4-digit years, and the APIs have been
-documented as such.
-
-The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
-integer to hold the year, and can hold years as large as 65535.
-
-zlib, upon which libpng depends, is also Y2K compliant. It contains
-no date-related code.
-
-
- Glenn Randers-Pehrson
- libpng maintainer
- PNG Development Group
-
-.SH NOTE
-
-Note about libpng version numbers:
-
-Due to various miscommunications, unforeseen code incompatibilities
-and occasional factors outside the authors' control, version numbering
-on the library has not always been consistent and straightforward.
-The following table summarizes matters since version 0.89c, which was
-the first widely used release:
-
- source png.h png.h shared-lib
- version string int version
- ------- ------ ----- ----------
- 0.89c ("beta 3") 0.89 89 1.0.89
- 0.90 ("beta 4") 0.90 90 0.90
- 0.95 ("beta 5") 0.95 95 0.95
- 0.96 ("beta 6") 0.96 96 0.96
- 0.97b ("beta 7") 1.00.97 97 1.0.1
- 0.97c 0.97 97 2.0.97
- 0.98 0.98 98 2.0.98
- 0.99 0.99 98 2.0.99
- 0.99a-m 0.99 99 2.0.99
- 1.00 1.00 100 2.1.0
- 1.0.0 1.0.0 100 2.1.0
- 1.0.0 (from here on, the 100 2.1.0
- 1.0.1 png.h string is 10001 2.1.0
- 1.0.1a-e identical to the 10002 from here on, the
- 1.0.2 source version) 10002 shared library is 2.V
- 1.0.2a-b 10003 where V is the source
- 1.0.1 10001 code version except as
- 1.0.1a-e 10002 2.1.0.1a-e noted.
- 1.0.2 10002 2.1.0.2
- 1.0.2a-b 10003 2.1.0.2a-b
- 1.0.3 10003 2.1.0.3
- 1.0.3a-d 10004 2.1.0.3a-d
- 1.0.4 10004 2.1.0.4
- 1.0.4a-f 10005 2.1.0.4a-f
- 1.0.5 (+ 2 patches) 10005 2.1.0.5
- 1.0.5a-d 10006 2.1.0.5a-d
- 1.0.5e-r 10100 2.1.0.5e-r
- 1.0.5s-v 10006 2.1.0.5s-v
- 1.0.6 (+ 3 patches) 10006 2.1.0.6
- 1.0.6d-g 10007 2.1.0.6d-g
- 1.0.6h 10007 10.6h
- 1.0.6i 10007 10.6i
- 1.0.6j 10007 2.1.0.6j
- 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14
- 1.0.7beta15-18 1 10007 2.1.0.7beta15-18
- 1.0.7rc1-2 1 10007 2.1.0.7rc1-2
- 1.0.7 1 10007 2.1.0.7
- 1.0.8beta1-4 1 10008 2.1.0.8beta1-4
- 1.0.8rc1 1 10008 2.1.0.8rc1
- 1.0.8 1 10008 2.1.0.8
- 1.0.9beta1-6 1 10009 2.1.0.9beta1-6
- 1.0.9rc1 1 10009 2.1.0.9rc1
- 1.0.9beta7-10 1 10009 2.1.0.9beta7-10
- 1.0.9rc2 1 10009 2.1.0.9rc2
- 1.0.9 1 10009 2.1.0.9
- 1.0.10beta1 1 10010 2.1.0.10beta1
- 1.0.10rc1 1 10010 2.1.0.10rc1
- 1.0.10 1 10010 2.1.0.10
- 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
- 1.0.11rc1 1 10011 2.1.0.11rc1
- 1.0.11 1 10011 2.1.0.11
- 1.0.12beta1-2 2 10012 2.1.0.12beta1-2
- 1.0.12rc1 2 10012 2.1.0.12rc1
- 1.0.12 2 10012 2.1.0.12
- 1.1.0a-f - 10100 2.1.1.0a-f abandoned
- 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
- 1.2.0beta3-5 3 10200 3.1.2.0beta3-5
- 1.2.0rc1 3 10200 3.1.2.0rc1
- 1.2.0 3 10200 3.1.2.0
- 1.2.1beta-4 3 10201 3.1.2.1beta1-4
- 1.2.1rc1-2 3 10201 3.1.2.1rc1-2
- 1.2.1 3 10201 3.1.2.1
- 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6
- 1.0.13beta1 10 10013 10.so.0.1.0.13beta1
- 1.0.13rc1 10 10013 10.so.0.1.0.13rc1
- 1.2.2rc1 12 10202 12.so.0.1.2.2rc1
- 1.0.13 10 10013 10.so.0.1.0.13
- 1.2.2 12 10202 12.so.0.1.2.2
- 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6
- 1.2.3 12 10203 12.so.0.1.2.3
- 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3
- 1.2.4rc1 13 10204 12.so.0.1.2.4rc1
- 1.0.14 10 10014 10.so.0.1.0.14
- 1.2.4 13 10204 12.so.0.1.2.4
- 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2
- 1.0.15rc1 10 10015 10.so.0.1.0.15rc1
- 1.0.15 10 10015 10.so.0.1.0.15
- 1.2.5 13 10205 12.so.0.1.2.5
- 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
- 1.2.6rc1-5 13 10206 12.so.0.1.2.6rc1-5
- 1.0.16 10 10016 10.so.0.1.0.16
- 1.2.6 13 10206 12.so.0.1.2.6
- 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
- 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
- 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
- 1.0.17 10 10017 12.so.0.1.0.17
- 1.2.7 13 10207 12.so.0.1.2.7
- 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
- 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
- 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
- 1.0.18 10 10018 12.so.0.1.0.18
- 1.2.8 13 10208 12.so.0.1.2.8
- 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
- 1.2.9beta4-11 13 10209 12.so.0.9[.0]
- 1.2.9rc1 13 10209 12.so.0.9[.0]
- 1.2.9 13 10209 12.so.0.9[.0]
- 1.2.10beta1-7 13 10210 12.so.0.10[.0]
- 1.2.10rc1-2 13 10210 12.so.0.10[.0]
- 1.2.10 13 10210 12.so.0.10[.0]
- 1.4.0beta1-6 14 10400 14.so.0.0[.0]
- 1.2.11beta1-4 13 10210 12.so.0.11[.0]
- 1.4.0beta7-8 14 10400 14.so.0.0[.0]
- 1.2.11 13 10211 12.so.0.11[.0]
- 1.2.12 13 10212 12.so.0.12[.0]
- 1.4.0beta9-14 14 10400 14.so.0.0[.0]
- 1.2.13 13 10213 12.so.0.13[.0]
- 1.4.0beta15-36 14 10400 14.so.0.0[.0]
- 1.4.0beta37-87 14 10400 14.so.14.0[.0]
- 1.4.0rc01 14 10400 14.so.14.0[.0]
- 1.4.0beta88-109 14 10400 14.so.14.0[.0]
- 1.4.0rc02-08 14 10400 14.so.14.0[.0]
- 1.4.0 14 10400 14.so.14.0[.0]
- 1.4.1beta01-03 14 10401 14.so.14.1[.0]
- 1.4.1rc01 14 10401 14.so.14.1[.0]
- 1.4.1beta04-12 14 10401 14.so.14.1[.0]
- 1.4.1 14 10401 14.so.14.1[.0]
- 1.4.2 14 10402 14.so.14.2[.0]
- 1.4.3 14 10403 14.so.14.3[.0]
- 1.4.4 14 10404 14.so.14.4[.0]
- 1.5.0beta01-58 15 10500 15.so.15.0[.0]
- 1.5.0rc01-07 15 10500 15.so.15.0[.0]
- 1.5.0 15 10500 15.so.15.0[.0]
- 1.5.1beta01-11 15 10501 15.so.15.1[.0]
- 1.5.1rc01-02 15 10501 15.so.15.1[.0]
- 1.5.1 15 10501 15.so.15.1[.0]
- 1.5.2beta01-03 15 10502 15.so.15.2[.0]
- 1.5.2rc01-03 15 10502 15.so.15.2[.0]
- 1.5.2 15 10502 15.so.15.2[.0]
- 1.5.3beta01-10 15 10503 15.so.15.3[.0]
- 1.5.3rc01-02 15 10503 15.so.15.3[.0]
- 1.5.3beta11 15 10503 15.so.15.3[.0]
- 1.5.3 [omitted]
- 1.5.4beta01-08 15 10504 15.so.15.4[.0]
- 1.5.4rc01 15 10504 15.so.15.4[.0]
- 1.5.4 15 10504 15.so.15.4[.0]
- 1.5.5beta01-08 15 10505 15.so.15.5[.0]
- 1.5.5rc01 15 10505 15.so.15.5[.0]
- 1.5.5 15 10505 15.so.15.5[.0]
- 1.5.6beta01-07 15 10506 15.so.15.6[.0]
- 1.5.6rc01-03 15 10506 15.so.15.6[.0]
- 1.5.6 15 10506 15.so.15.6[.0]
- 1.5.7beta01-05 15 10507 15.so.15.7[.0]
- 1.5.7rc01-03 15 10507 15.so.15.7[.0]
- 1.5.7 15 10507 15.so.15.7[.0]
- 1.6.0beta01-40 16 10600 16.so.16.0[.0]
- 1.6.0rc01-08 16 10600 16.so.16.0[.0]
- 1.6.0 16 10600 16.so.16.0[.0]
- 1.6.1beta01-09 16 10601 16.so.16.1[.0]
- 1.6.1rc01 16 10601 16.so.16.1[.0]
- 1.6.1 16 10601 16.so.16.1[.0]
- 1.6.2beta01 16 10602 16.so.16.2[.0]
- 1.6.2rc01-06 16 10602 16.so.16.2[.0]
- 1.6.2 16 10602 16.so.16.2[.0]
- 1.6.3beta01-11 16 10603 16.so.16.3[.0]
- 1.6.3rc01 16 10603 16.so.16.3[.0]
- 1.6.3 16 10603 16.so.16.3[.0]
-
-Henceforth the source version will match the shared-library minor
-and patch numbers; the shared-library major version number will be
-used for changes in backward compatibility, as it is intended. The
-PNG_PNGLIB_VER macro, which is not used within libpng but is available
-for applications, is an unsigned integer of the form xyyzz corresponding
-to the source version x.y.z (leading zeros in y and z). Beta versions
-were given the previous public release number plus a letter, until
-version 1.0.6j; from then on they were given the upcoming public
-release number plus "betaNN" or "rcN".
-
-.SH "SEE ALSO"
-.BR "png"(5), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
-
-.LP
-.IR libpng :
-.IP
-http://libpng.sourceforge.net (follow the [DOWNLOAD] link)
-http://www.libpng.org/pub/png
-
-.LP
-.IR zlib :
-.IP
-(generally) at the same location as
-.I libpng
-or at
-.br
-ftp://ftp.info-zip.org/pub/infozip/zlib
-
-.LP
-.IR PNG specification: RFC 2083
-.IP
-(generally) at the same location as
-.I libpng
-or at
-.br
-ftp://ds.internic.net/rfc/rfc2083.txt
-.br
-or (as a W3C Recommendation) at
-.br
-http://www.w3.org/TR/REC-png.html
-
-.LP
-In the case of any inconsistency between the PNG specification
-and this library, the specification takes precedence.
-
-.SH AUTHORS
-This man page: Glenn Randers-Pehrson
-<glennrp at users.sourceforge.net>
-
-The contributing authors would like to thank all those who helped
-with testing, bug fixes, and patience. This wouldn't have been
-possible without all of you.
-
-Thanks to Frank J. T. Wojcik for helping with the documentation.
-
-Libpng version 1.6.3 - July 18, 2013:
-Initially created in 1995 by Guy Eric Schalnat, then of Group 42, Inc.
-Currently maintained by Glenn Randers-Pehrson (glennrp at users.sourceforge.net).
-
-Supported by the PNG development group
-.br
-png-mng-implement at lists.sf.net
-(subscription required; visit
-png-mng-implement at lists.sourceforge.net (subscription required; visit
-https://lists.sourceforge.net/lists/listinfo/png-mng-implement
-to subscribe).
-
-.SH COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
-
-(This copy of the libpng notices is provided for your convenience. In case of
-any discrepancy between this copy and the notices in the file png.h that is
-included in the libpng distribution, the latter shall prevail.)
-
-If you modify libpng you may insert additional notices immediately following
-this sentence.
-
-This code is released under the libpng license.
-
-libpng versions 1.2.6, August 15, 2004, through 1.6.3, July 18, 2013, are
-Copyright (c) 2004,2006-2007 Glenn Randers-Pehrson, and are
-distributed according to the same disclaimer and license as libpng-1.2.5
-with the following individual added to the list of Contributing Authors
-
- Cosmin Truta
-
-libpng versions 1.0.7, July 1, 2000, through 1.2.5 - October 3, 2002, are
-Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
-distributed according to the same disclaimer and license as libpng-1.0.6
-with the following individuals added to the list of Contributing Authors
-
- Simon-Pierre Cadieux
- Eric S. Raymond
- Gilles Vollant
-
-and with the following additions to the disclaimer:
-
- There is no warranty against interference with your
- enjoyment of the library or against infringement.
- There is no warranty that our efforts or the library
- will fulfill any of your particular purposes or needs.
- This library is provided with all faults, and the entire
- risk of satisfactory quality, performance, accuracy, and
- effort is with the user.
-
-libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
-Copyright (c) 1998, 1999 Glenn Randers-Pehrson
-Distributed according to the same disclaimer and license as libpng-0.96,
-with the following individuals added to the list of Contributing Authors:
-
- Tom Lane
- Glenn Randers-Pehrson
- Willem van Schaik
-
-libpng versions 0.89, June 1996, through 0.96, May 1997, are
-Copyright (c) 1996, 1997 Andreas Dilger
-Distributed according to the same disclaimer and license as libpng-0.88,
-with the following individuals added to the list of Contributing Authors:
-
- John Bowler
- Kevin Bracey
- Sam Bushell
- Magnus Holmgren
- Greg Roelofs
- Tom Tanner
-
-libpng versions 0.5, May 1995, through 0.88, January 1996, are
-Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
-
-For the purposes of this copyright and license, "Contributing Authors"
-is defined as the following set of individuals:
-
- Andreas Dilger
- Dave Martindale
- Guy Eric Schalnat
- Paul Schmidt
- Tim Wegner
-
-The PNG Reference Library is supplied "AS IS". The Contributing Authors
-and Group 42, Inc. disclaim all warranties, expressed or implied,
-including, without limitation, the warranties of merchantability and of
-fitness for any purpose. The Contributing Authors and Group 42, Inc.
-assume no liability for direct, indirect, incidental, special, exemplary,
-or consequential damages, which may result from the use of the PNG
-Reference Library, even if advised of the possibility of such damage.
-
-Permission is hereby granted to use, copy, modify, and distribute this
-source code, or portions hereof, for any purpose, without fee, subject
-to the following restrictions:
-
-1. The origin of this source code must not be misrepresented.
-
-2. Altered versions must be plainly marked as such and
- must not be misrepresented as being the original source.
-
-3. This Copyright notice may not be removed or altered from
- any source or altered source distribution.
-
-The Contributing Authors and Group 42, Inc. specifically permit, without
-fee, and encourage the use of this source code as a component to
-supporting the PNG file format in commercial products. If you use this
-source code in a product, acknowledgment is not required but would be
-appreciated.
-
-
-A "png_get_copyright" function is available, for convenient use in "about"
-boxes and the like:
-
- printf("%s",png_get_copyright(NULL));
-
-Also, the PNG logo (in PNG format, of course) is supplied in the
-files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
-
-Libpng is OSI Certified Open Source Software. OSI Certified Open Source is a
-certification mark of the Open Source Initiative.
-
-Glenn Randers-Pehrson
-glennrp at users.sourceforge.net
-July 18, 2013
-
-.\" end of man page
-
+++ /dev/null
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-includedir=@includedir@/libpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
-
-Name: libpng
-Description: Loads and saves PNG files
-Version: @PNGLIB_VERSION@
-Libs: -L${libdir} -lpng@PNGLIB_MAJOR@@PNGLIB_MINOR@
-Libs.private: @LIBS@
-Cflags: -I${includedir}
+++ /dev/null
-.TH LIBPNGPF 3 "July 18, 2013"
-.SH NAME
-libpng \- Portable Network Graphics (PNG) Reference Library 1.6.3
-(private functions)
-.SH SYNOPSIS
-\fB#include \fI"pngpriv.h"
-
-\fBAs of libpng version \fP\fI1.5.1\fP\fB, this section is no longer \fP\fImaintained\fP\fB, now that the private function prototypes are hidden in pngpriv.h and not accessible to applications. Look in pngpriv.h for the prototypes and a short description of each \fIfunction.
-
-.SH DESCRIPTION
-The functions previously listed here are used privately by libpng and are not
-available for use by applications. They are not "exported" to applications
-using shared libraries.
-
-.SH SEE ALSO
-.BR "png"(5), " libpng"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
-.SH AUTHOR
-Glenn Randers-Pehrson
+++ /dev/null
-
-# libtool (GNU libtool) 2.4.2
-# Written by Gordon Matzigkeit <gord@gnu.ai.mit.edu>, 1996
-
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005, 2006,
-# 2007, 2008, 2009, 2010, 2011 Free Software Foundation, Inc.
-# This is free software; see the source for copying conditions. There is NO
-# warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
-
-# GNU Libtool is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2 of the License, or
-# (at your option) any later version.
-#
-# As a special exception to the GNU General Public License,
-# if you distribute this file as part of a program or library that
-# is built using GNU Libtool, you may include this file under the
-# same distribution terms that you use for the rest of that program.
-#
-# GNU Libtool is distributed in the hope that it will be useful, but
-# WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
-# General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING. If not, a copy
-# can be downloaded from http://www.gnu.org/licenses/gpl.html,
-# or obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-
-# Usage: $progname [OPTION]... [MODE-ARG]...
-#
-# Provide generalized library-building support services.
-#
-# --config show all configuration variables
-# --debug enable verbose shell tracing
-# -n, --dry-run display commands without modifying any files
-# --features display basic configuration information and exit
-# --mode=MODE use operation mode MODE
-# --preserve-dup-deps don't remove duplicate dependency libraries
-# --quiet, --silent don't print informational messages
-# --no-quiet, --no-silent
-# print informational messages (default)
-# --no-warn don't display warning messages
-# --tag=TAG use configuration variables from tag TAG
-# -v, --verbose print more informational messages than default
-# --no-verbose don't print the extra informational messages
-# --version print version information
-# -h, --help, --help-all print short, long, or detailed help message
-#
-# MODE must be one of the following:
-#
-# clean remove files from the build directory
-# compile compile a source file into a libtool object
-# execute automatically set library path, then run a program
-# finish complete the installation of libtool libraries
-# install install libraries or executables
-# link create a library or an executable
-# uninstall remove libraries from an installed directory
-#
-# MODE-ARGS vary depending on the MODE. When passed as first option,
-# `--mode=MODE' may be abbreviated as `MODE' or a unique abbreviation of that.
-# Try `$progname --help --mode=MODE' for a more detailed description of MODE.
-#
-# When reporting a bug, please describe a test case to reproduce it and
-# include the following information:
-#
-# host-triplet: $host
-# shell: $SHELL
-# compiler: $LTCC
-# compiler flags: $LTCFLAGS
-# linker: $LD (gnu? $with_gnu_ld)
-# $progname: (GNU libtool) 2.4.2
-# automake: $automake_version
-# autoconf: $autoconf_version
-#
-# Report bugs to <bug-libtool@gnu.org>.
-# GNU libtool home page: <http://www.gnu.org/software/libtool/>.
-# General help using GNU software: <http://www.gnu.org/gethelp/>.
-
-PROGRAM=libtool
-PACKAGE=libtool
-VERSION=2.4.2
-TIMESTAMP=""
-package_revision=1.3337
-
-# Be Bourne compatible
-if test -n "${ZSH_VERSION+set}" && (emulate sh) >/dev/null 2>&1; then
- emulate sh
- NULLCMD=:
- # Zsh 3.x and 4.x performs word splitting on ${1+"$@"}, which
- # is contrary to our usage. Disable this feature.
- alias -g '${1+"$@"}'='"$@"'
- setopt NO_GLOB_SUBST
-else
- case `(set -o) 2>/dev/null` in *posix*) set -o posix;; esac
-fi
-BIN_SH=xpg4; export BIN_SH # for Tru64
-DUALCASE=1; export DUALCASE # for MKS sh
-
-# A function that is used when there is no print builtin or printf.
-func_fallback_echo ()
-{
- eval 'cat <<_LTECHO_EOF
-$1
-_LTECHO_EOF'
-}
-
-# NLS nuisances: We save the old values to restore during execute mode.
-lt_user_locale=
-lt_safe_locale=
-for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
-do
- eval "if test \"\${$lt_var+set}\" = set; then
- save_$lt_var=\$$lt_var
- $lt_var=C
- export $lt_var
- lt_user_locale=\"$lt_var=\\\$save_\$lt_var; \$lt_user_locale\"
- lt_safe_locale=\"$lt_var=C; \$lt_safe_locale\"
- fi"
-done
-LC_ALL=C
-LANGUAGE=C
-export LANGUAGE LC_ALL
-
-$lt_unset CDPATH
-
-
-# Work around backward compatibility issue on IRIX 6.5. On IRIX 6.4+, sh
-# is ksh but when the shell is invoked as "sh" and the current value of
-# the _XPG environment variable is not equal to 1 (one), the special
-# positional parameter $0, within a function call, is the name of the
-# function.
-progpath="$0"
-
-
-
-: ${CP="cp -f"}
-test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'}
-: ${MAKE="make"}
-: ${MKDIR="mkdir"}
-: ${MV="mv -f"}
-: ${RM="rm -f"}
-: ${SHELL="${CONFIG_SHELL-/bin/sh}"}
-: ${Xsed="$SED -e 1s/^X//"}
-
-# Global variables:
-EXIT_SUCCESS=0
-EXIT_FAILURE=1
-EXIT_MISMATCH=63 # $? = 63 is used to indicate version mismatch to missing.
-EXIT_SKIP=77 # $? = 77 is used to indicate a skipped test to automake.
-
-exit_status=$EXIT_SUCCESS
-
-# Make sure IFS has a sensible default
-lt_nl='
-'
-IFS=" $lt_nl"
-
-dirname="s,/[^/]*$,,"
-basename="s,^.*/,,"
-
-# func_dirname file append nondir_replacement
-# Compute the dirname of FILE. If nonempty, add APPEND to the result,
-# otherwise set result to NONDIR_REPLACEMENT.
-func_dirname ()
-{
- func_dirname_result=`$ECHO "${1}" | $SED "$dirname"`
- if test "X$func_dirname_result" = "X${1}"; then
- func_dirname_result="${3}"
- else
- func_dirname_result="$func_dirname_result${2}"
- fi
-} # func_dirname may be replaced by extended shell implementation
-
-
-# func_basename file
-func_basename ()
-{
- func_basename_result=`$ECHO "${1}" | $SED "$basename"`
-} # func_basename may be replaced by extended shell implementation
-
-
-# func_dirname_and_basename file append nondir_replacement
-# perform func_basename and func_dirname in a single function
-# call:
-# dirname: Compute the dirname of FILE. If nonempty,
-# add APPEND to the result, otherwise set result
-# to NONDIR_REPLACEMENT.
-# value returned in "$func_dirname_result"
-# basename: Compute filename of FILE.
-# value retuned in "$func_basename_result"
-# Implementation must be kept synchronized with func_dirname
-# and func_basename. For efficiency, we do not delegate to
-# those functions but instead duplicate the functionality here.
-func_dirname_and_basename ()
-{
- # Extract subdirectory from the argument.
- func_dirname_result=`$ECHO "${1}" | $SED -e "$dirname"`
- if test "X$func_dirname_result" = "X${1}"; then
- func_dirname_result="${3}"
- else
- func_dirname_result="$func_dirname_result${2}"
- fi
- func_basename_result=`$ECHO "${1}" | $SED -e "$basename"`
-} # func_dirname_and_basename may be replaced by extended shell implementation
-
-
-# func_stripname prefix suffix name
-# strip PREFIX and SUFFIX off of NAME.
-# PREFIX and SUFFIX must not contain globbing or regex special
-# characters, hashes, percent signs, but SUFFIX may contain a leading
-# dot (in which case that matches only a dot).
-# func_strip_suffix prefix name
-func_stripname ()
-{
- case ${2} in
- .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
- *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
- esac
-} # func_stripname may be replaced by extended shell implementation
-
-
-# These SED scripts presuppose an absolute path with a trailing slash.
-pathcar='s,^/\([^/]*\).*$,\1,'
-pathcdr='s,^/[^/]*,,'
-removedotparts=':dotsl
- s@/\./@/@g
- t dotsl
- s,/\.$,/,'
-collapseslashes='s@/\{1,\}@/@g'
-finalslash='s,/*$,/,'
-
-# func_normal_abspath PATH
-# Remove doubled-up and trailing slashes, "." path components,
-# and cancel out any ".." path components in PATH after making
-# it an absolute path.
-# value returned in "$func_normal_abspath_result"
-func_normal_abspath ()
-{
- # Start from root dir and reassemble the path.
- func_normal_abspath_result=
- func_normal_abspath_tpath=$1
- func_normal_abspath_altnamespace=
- case $func_normal_abspath_tpath in
- "")
- # Empty path, that just means $cwd.
- func_stripname '' '/' "`pwd`"
- func_normal_abspath_result=$func_stripname_result
- return
- ;;
- # The next three entries are used to spot a run of precisely
- # two leading slashes without using negated character classes;
- # we take advantage of case's first-match behaviour.
- ///*)
- # Unusual form of absolute path, do nothing.
- ;;
- //*)
- # Not necessarily an ordinary path; POSIX reserves leading '//'
- # and for example Cygwin uses it to access remote file shares
- # over CIFS/SMB, so we conserve a leading double slash if found.
- func_normal_abspath_altnamespace=/
- ;;
- /*)
- # Absolute path, do nothing.
- ;;
- *)
- # Relative path, prepend $cwd.
- func_normal_abspath_tpath=`pwd`/$func_normal_abspath_tpath
- ;;
- esac
- # Cancel out all the simple stuff to save iterations. We also want
- # the path to end with a slash for ease of parsing, so make sure
- # there is one (and only one) here.
- func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
- -e "$removedotparts" -e "$collapseslashes" -e "$finalslash"`
- while :; do
- # Processed it all yet?
- if test "$func_normal_abspath_tpath" = / ; then
- # If we ascended to the root using ".." the result may be empty now.
- if test -z "$func_normal_abspath_result" ; then
- func_normal_abspath_result=/
- fi
- break
- fi
- func_normal_abspath_tcomponent=`$ECHO "$func_normal_abspath_tpath" | $SED \
- -e "$pathcar"`
- func_normal_abspath_tpath=`$ECHO "$func_normal_abspath_tpath" | $SED \
- -e "$pathcdr"`
- # Figure out what to do with it
- case $func_normal_abspath_tcomponent in
- "")
- # Trailing empty path component, ignore it.
- ;;
- ..)
- # Parent dir; strip last assembled component from result.
- func_dirname "$func_normal_abspath_result"
- func_normal_abspath_result=$func_dirname_result
- ;;
- *)
- # Actual path component, append it.
- func_normal_abspath_result=$func_normal_abspath_result/$func_normal_abspath_tcomponent
- ;;
- esac
- done
- # Restore leading double-slash if one was found on entry.
- func_normal_abspath_result=$func_normal_abspath_altnamespace$func_normal_abspath_result
-}
-
-# func_relative_path SRCDIR DSTDIR
-# generates a relative path from SRCDIR to DSTDIR, with a trailing
-# slash if non-empty, suitable for immediately appending a filename
-# without needing to append a separator.
-# value returned in "$func_relative_path_result"
-func_relative_path ()
-{
- func_relative_path_result=
- func_normal_abspath "$1"
- func_relative_path_tlibdir=$func_normal_abspath_result
- func_normal_abspath "$2"
- func_relative_path_tbindir=$func_normal_abspath_result
-
- # Ascend the tree starting from libdir
- while :; do
- # check if we have found a prefix of bindir
- case $func_relative_path_tbindir in
- $func_relative_path_tlibdir)
- # found an exact match
- func_relative_path_tcancelled=
- break
- ;;
- $func_relative_path_tlibdir*)
- # found a matching prefix
- func_stripname "$func_relative_path_tlibdir" '' "$func_relative_path_tbindir"
- func_relative_path_tcancelled=$func_stripname_result
- if test -z "$func_relative_path_result"; then
- func_relative_path_result=.
- fi
- break
- ;;
- *)
- func_dirname $func_relative_path_tlibdir
- func_relative_path_tlibdir=${func_dirname_result}
- if test "x$func_relative_path_tlibdir" = x ; then
- # Have to descend all the way to the root!
- func_relative_path_result=../$func_relative_path_result
- func_relative_path_tcancelled=$func_relative_path_tbindir
- break
- fi
- func_relative_path_result=../$func_relative_path_result
- ;;
- esac
- done
-
- # Now calculate path; take care to avoid doubling-up slashes.
- func_stripname '' '/' "$func_relative_path_result"
- func_relative_path_result=$func_stripname_result
- func_stripname '/' '/' "$func_relative_path_tcancelled"
- if test "x$func_stripname_result" != x ; then
- func_relative_path_result=${func_relative_path_result}/${func_stripname_result}
- fi
-
- # Normalisation. If bindir is libdir, return empty string,
- # else relative path ending with a slash; either way, target
- # file name can be directly appended.
- if test ! -z "$func_relative_path_result"; then
- func_stripname './' '' "$func_relative_path_result/"
- func_relative_path_result=$func_stripname_result
- fi
-}
-
-# The name of this program:
-func_dirname_and_basename "$progpath"
-progname=$func_basename_result
-
-# Make sure we have an absolute path for reexecution:
-case $progpath in
- [\\/]*|[A-Za-z]:\\*) ;;
- *[\\/]*)
- progdir=$func_dirname_result
- progdir=`cd "$progdir" && pwd`
- progpath="$progdir/$progname"
- ;;
- *)
- save_IFS="$IFS"
- IFS=${PATH_SEPARATOR-:}
- for progdir in $PATH; do
- IFS="$save_IFS"
- test -x "$progdir/$progname" && break
- done
- IFS="$save_IFS"
- test -n "$progdir" || progdir=`pwd`
- progpath="$progdir/$progname"
- ;;
-esac
-
-# Sed substitution that helps us do robust quoting. It backslashifies
-# metacharacters that are still active within double-quoted strings.
-Xsed="${SED}"' -e 1s/^X//'
-sed_quote_subst='s/\([`"$\\]\)/\\\1/g'
-
-# Same as above, but do not quote variable references.
-double_quote_subst='s/\(["`\\]\)/\\\1/g'
-
-# Sed substitution that turns a string into a regex matching for the
-# string literally.
-sed_make_literal_regex='s,[].[^$\\*\/],\\&,g'
-
-# Sed substitution that converts a w32 file name or path
-# which contains forward slashes, into one that contains
-# (escaped) backslashes. A very naive implementation.
-lt_sed_naive_backslashify='s|\\\\*|\\|g;s|/|\\|g;s|\\|\\\\|g'
-
-# Re-`\' parameter expansions in output of double_quote_subst that were
-# `\'-ed in input to the same. If an odd number of `\' preceded a '$'
-# in input to double_quote_subst, that '$' was protected from expansion.
-# Since each input `\' is now two `\'s, look for any number of runs of
-# four `\'s followed by two `\'s and then a '$'. `\' that '$'.
-bs='\\'
-bs2='\\\\'
-bs4='\\\\\\\\'
-dollar='\$'
-sed_double_backslash="\
- s/$bs4/&\\
-/g
- s/^$bs2$dollar/$bs&/
- s/\\([^$bs]\\)$bs2$dollar/\\1$bs2$bs$dollar/g
- s/\n//g"
-
-# Standard options:
-opt_dry_run=false
-opt_help=false
-opt_quiet=false
-opt_verbose=false
-opt_warning=:
-
-# func_echo arg...
-# Echo program name prefixed message, along with the current mode
-# name if it has been set yet.
-func_echo ()
-{
- $ECHO "$progname: ${opt_mode+$opt_mode: }$*"
-}
-
-# func_verbose arg...
-# Echo program name prefixed message in verbose mode only.
-func_verbose ()
-{
- $opt_verbose && func_echo ${1+"$@"}
-
- # A bug in bash halts the script if the last line of a function
- # fails when set -e is in force, so we need another command to
- # work around that:
- :
-}
-
-# func_echo_all arg...
-# Invoke $ECHO with all args, space-separated.
-func_echo_all ()
-{
- $ECHO "$*"
-}
-
-# func_error arg...
-# Echo program name prefixed message to standard error.
-func_error ()
-{
- $ECHO "$progname: ${opt_mode+$opt_mode: }"${1+"$@"} 1>&2
-}
-
-# func_warning arg...
-# Echo program name prefixed warning message to standard error.
-func_warning ()
-{
- $opt_warning && $ECHO "$progname: ${opt_mode+$opt_mode: }warning: "${1+"$@"} 1>&2
-
- # bash bug again:
- :
-}
-
-# func_fatal_error arg...
-# Echo program name prefixed message to standard error, and exit.
-func_fatal_error ()
-{
- func_error ${1+"$@"}
- exit $EXIT_FAILURE
-}
-
-# func_fatal_help arg...
-# Echo program name prefixed message to standard error, followed by
-# a help hint, and exit.
-func_fatal_help ()
-{
- func_error ${1+"$@"}
- func_fatal_error "$help"
-}
-help="Try \`$progname --help' for more information." ## default
-
-
-# func_grep expression filename
-# Check whether EXPRESSION matches any line of FILENAME, without output.
-func_grep ()
-{
- $GREP "$1" "$2" >/dev/null 2>&1
-}
-
-
-# func_mkdir_p directory-path
-# Make sure the entire path to DIRECTORY-PATH is available.
-func_mkdir_p ()
-{
- my_directory_path="$1"
- my_dir_list=
-
- if test -n "$my_directory_path" && test "$opt_dry_run" != ":"; then
-
- # Protect directory names starting with `-'
- case $my_directory_path in
- -*) my_directory_path="./$my_directory_path" ;;
- esac
-
- # While some portion of DIR does not yet exist...
- while test ! -d "$my_directory_path"; do
- # ...make a list in topmost first order. Use a colon delimited
- # list incase some portion of path contains whitespace.
- my_dir_list="$my_directory_path:$my_dir_list"
-
- # If the last portion added has no slash in it, the list is done
- case $my_directory_path in */*) ;; *) break ;; esac
-
- # ...otherwise throw away the child directory and loop
- my_directory_path=`$ECHO "$my_directory_path" | $SED -e "$dirname"`
- done
- my_dir_list=`$ECHO "$my_dir_list" | $SED 's,:*$,,'`
-
- save_mkdir_p_IFS="$IFS"; IFS=':'
- for my_dir in $my_dir_list; do
- IFS="$save_mkdir_p_IFS"
- # mkdir can fail with a `File exist' error if two processes
- # try to create one of the directories concurrently. Don't
- # stop in that case!
- $MKDIR "$my_dir" 2>/dev/null || :
- done
- IFS="$save_mkdir_p_IFS"
-
- # Bail out if we (or some other process) failed to create a directory.
- test -d "$my_directory_path" || \
- func_fatal_error "Failed to create \`$1'"
- fi
-}
-
-
-# func_mktempdir [string]
-# Make a temporary directory that won't clash with other running
-# libtool processes, and avoids race conditions if possible. If
-# given, STRING is the basename for that directory.
-func_mktempdir ()
-{
- my_template="${TMPDIR-/tmp}/${1-$progname}"
-
- if test "$opt_dry_run" = ":"; then
- # Return a directory name, but don't create it in dry-run mode
- my_tmpdir="${my_template}-$$"
- else
-
- # If mktemp works, use that first and foremost
- my_tmpdir=`mktemp -d "${my_template}-XXXXXXXX" 2>/dev/null`
-
- if test ! -d "$my_tmpdir"; then
- # Failing that, at least try and use $RANDOM to avoid a race
- my_tmpdir="${my_template}-${RANDOM-0}$$"
-
- save_mktempdir_umask=`umask`
- umask 0077
- $MKDIR "$my_tmpdir"
- umask $save_mktempdir_umask
- fi
-
- # If we're not in dry-run mode, bomb out on failure
- test -d "$my_tmpdir" || \
- func_fatal_error "cannot create temporary directory \`$my_tmpdir'"
- fi
-
- $ECHO "$my_tmpdir"
-}
-
-
-# func_quote_for_eval arg
-# Aesthetically quote ARG to be evaled later.
-# This function returns two values: FUNC_QUOTE_FOR_EVAL_RESULT
-# is double-quoted, suitable for a subsequent eval, whereas
-# FUNC_QUOTE_FOR_EVAL_UNQUOTED_RESULT has merely all characters
-# which are still active within double quotes backslashified.
-func_quote_for_eval ()
-{
- case $1 in
- *[\\\`\"\$]*)
- func_quote_for_eval_unquoted_result=`$ECHO "$1" | $SED "$sed_quote_subst"` ;;
- *)
- func_quote_for_eval_unquoted_result="$1" ;;
- esac
-
- case $func_quote_for_eval_unquoted_result in
- # Double-quote args containing shell metacharacters to delay
- # word splitting, command substitution and and variable
- # expansion for a subsequent eval.
- # Many Bourne shells cannot handle close brackets correctly
- # in scan sets, so we specify it separately.
- *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"")
- func_quote_for_eval_result="\"$func_quote_for_eval_unquoted_result\""
- ;;
- *)
- func_quote_for_eval_result="$func_quote_for_eval_unquoted_result"
- esac
-}
-
-
-# func_quote_for_expand arg
-# Aesthetically quote ARG to be evaled later; same as above,
-# but do not quote variable references.
-func_quote_for_expand ()
-{
- case $1 in
- *[\\\`\"]*)
- my_arg=`$ECHO "$1" | $SED \
- -e "$double_quote_subst" -e "$sed_double_backslash"` ;;
- *)
- my_arg="$1" ;;
- esac
-
- case $my_arg in
- # Double-quote args containing shell metacharacters to delay
- # word splitting and command substitution for a subsequent eval.
- # Many Bourne shells cannot handle close brackets correctly
- # in scan sets, so we specify it separately.
- *[\[\~\#\^\&\*\(\)\{\}\|\;\<\>\?\'\ \ ]*|*]*|"")
- my_arg="\"$my_arg\""
- ;;
- esac
-
- func_quote_for_expand_result="$my_arg"
-}
-
-
-# func_show_eval cmd [fail_exp]
-# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is
-# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP
-# is given, then evaluate it.
-func_show_eval ()
-{
- my_cmd="$1"
- my_fail_exp="${2-:}"
-
- ${opt_silent-false} || {
- func_quote_for_expand "$my_cmd"
- eval "func_echo $func_quote_for_expand_result"
- }
-
- if ${opt_dry_run-false}; then :; else
- eval "$my_cmd"
- my_status=$?
- if test "$my_status" -eq 0; then :; else
- eval "(exit $my_status); $my_fail_exp"
- fi
- fi
-}
-
-
-# func_show_eval_locale cmd [fail_exp]
-# Unless opt_silent is true, then output CMD. Then, if opt_dryrun is
-# not true, evaluate CMD. If the evaluation of CMD fails, and FAIL_EXP
-# is given, then evaluate it. Use the saved locale for evaluation.
-func_show_eval_locale ()
-{
- my_cmd="$1"
- my_fail_exp="${2-:}"
-
- ${opt_silent-false} || {
- func_quote_for_expand "$my_cmd"
- eval "func_echo $func_quote_for_expand_result"
- }
-
- if ${opt_dry_run-false}; then :; else
- eval "$lt_user_locale
- $my_cmd"
- my_status=$?
- eval "$lt_safe_locale"
- if test "$my_status" -eq 0; then :; else
- eval "(exit $my_status); $my_fail_exp"
- fi
- fi
-}
-
-# func_tr_sh
-# Turn $1 into a string suitable for a shell variable name.
-# Result is stored in $func_tr_sh_result. All characters
-# not in the set a-zA-Z0-9_ are replaced with '_'. Further,
-# if $1 begins with a digit, a '_' is prepended as well.
-func_tr_sh ()
-{
- case $1 in
- [0-9]* | *[!a-zA-Z0-9_]*)
- func_tr_sh_result=`$ECHO "$1" | $SED 's/^\([0-9]\)/_\1/; s/[^a-zA-Z0-9_]/_/g'`
- ;;
- * )
- func_tr_sh_result=$1
- ;;
- esac
-}
-
-
-# func_version
-# Echo version message to standard output and exit.
-func_version ()
-{
- $opt_debug
-
- $SED -n '/(C)/!b go
- :more
- /\./!{
- N
- s/\n# / /
- b more
- }
- :go
- /^# '$PROGRAM' (GNU /,/# warranty; / {
- s/^# //
- s/^# *$//
- s/\((C)\)[ 0-9,-]*\( [1-9][0-9]*\)/\1\2/
- p
- }' < "$progpath"
- exit $?
-}
-
-# func_usage
-# Echo short help message to standard output and exit.
-func_usage ()
-{
- $opt_debug
-
- $SED -n '/^# Usage:/,/^# *.*--help/ {
- s/^# //
- s/^# *$//
- s/\$progname/'$progname'/
- p
- }' < "$progpath"
- echo
- $ECHO "run \`$progname --help | more' for full usage"
- exit $?
-}
-
-# func_help [NOEXIT]
-# Echo long help message to standard output and exit,
-# unless 'noexit' is passed as argument.
-func_help ()
-{
- $opt_debug
-
- $SED -n '/^# Usage:/,/# Report bugs to/ {
- :print
- s/^# //
- s/^# *$//
- s*\$progname*'$progname'*
- s*\$host*'"$host"'*
- s*\$SHELL*'"$SHELL"'*
- s*\$LTCC*'"$LTCC"'*
- s*\$LTCFLAGS*'"$LTCFLAGS"'*
- s*\$LD*'"$LD"'*
- s/\$with_gnu_ld/'"$with_gnu_ld"'/
- s/\$automake_version/'"`(${AUTOMAKE-automake} --version) 2>/dev/null |$SED 1q`"'/
- s/\$autoconf_version/'"`(${AUTOCONF-autoconf} --version) 2>/dev/null |$SED 1q`"'/
- p
- d
- }
- /^# .* home page:/b print
- /^# General help using/b print
- ' < "$progpath"
- ret=$?
- if test -z "$1"; then
- exit $ret
- fi
-}
-
-# func_missing_arg argname
-# Echo program name prefixed message to standard error and set global
-# exit_cmd.
-func_missing_arg ()
-{
- $opt_debug
-
- func_error "missing argument for $1."
- exit_cmd=exit
-}
-
-
-# func_split_short_opt shortopt
-# Set func_split_short_opt_name and func_split_short_opt_arg shell
-# variables after splitting SHORTOPT after the 2nd character.
-func_split_short_opt ()
-{
- my_sed_short_opt='1s/^\(..\).*$/\1/;q'
- my_sed_short_rest='1s/^..\(.*\)$/\1/;q'
-
- func_split_short_opt_name=`$ECHO "$1" | $SED "$my_sed_short_opt"`
- func_split_short_opt_arg=`$ECHO "$1" | $SED "$my_sed_short_rest"`
-} # func_split_short_opt may be replaced by extended shell implementation
-
-
-# func_split_long_opt longopt
-# Set func_split_long_opt_name and func_split_long_opt_arg shell
-# variables after splitting LONGOPT at the `=' sign.
-func_split_long_opt ()
-{
- my_sed_long_opt='1s/^\(--[^=]*\)=.*/\1/;q'
- my_sed_long_arg='1s/^--[^=]*=//'
-
- func_split_long_opt_name=`$ECHO "$1" | $SED "$my_sed_long_opt"`
- func_split_long_opt_arg=`$ECHO "$1" | $SED "$my_sed_long_arg"`
-} # func_split_long_opt may be replaced by extended shell implementation
-
-exit_cmd=:
-
-
-
-
-
-magic="%%%MAGIC variable%%%"
-magic_exe="%%%MAGIC EXE variable%%%"
-
-# Global variables.
-nonopt=
-preserve_args=
-lo2o="s/\\.lo\$/.${objext}/"
-o2lo="s/\\.${objext}\$/.lo/"
-extracted_archives=
-extracted_serial=0
-
-# If this variable is set in any of the actions, the command in it
-# will be execed at the end. This prevents here-documents from being
-# left over by shells.
-exec_cmd=
-
-# func_append var value
-# Append VALUE to the end of shell variable VAR.
-func_append ()
-{
- eval "${1}=\$${1}\${2}"
-} # func_append may be replaced by extended shell implementation
-
-# func_append_quoted var value
-# Quote VALUE and append to the end of shell variable VAR, separated
-# by a space.
-func_append_quoted ()
-{
- func_quote_for_eval "${2}"
- eval "${1}=\$${1}\\ \$func_quote_for_eval_result"
-} # func_append_quoted may be replaced by extended shell implementation
-
-
-# func_arith arithmetic-term...
-func_arith ()
-{
- func_arith_result=`expr "${@}"`
-} # func_arith may be replaced by extended shell implementation
-
-
-# func_len string
-# STRING may not start with a hyphen.
-func_len ()
-{
- func_len_result=`expr "${1}" : ".*" 2>/dev/null || echo $max_cmd_len`
-} # func_len may be replaced by extended shell implementation
-
-
-# func_lo2o object
-func_lo2o ()
-{
- func_lo2o_result=`$ECHO "${1}" | $SED "$lo2o"`
-} # func_lo2o may be replaced by extended shell implementation
-
-
-# func_xform libobj-or-source
-func_xform ()
-{
- func_xform_result=`$ECHO "${1}" | $SED 's/\.[^.]*$/.lo/'`
-} # func_xform may be replaced by extended shell implementation
-
-
-# func_fatal_configuration arg...
-# Echo program name prefixed message to standard error, followed by
-# a configuration failure hint, and exit.
-func_fatal_configuration ()
-{
- func_error ${1+"$@"}
- func_error "See the $PACKAGE documentation for more information."
- func_fatal_error "Fatal configuration error."
-}
-
-
-# func_config
-# Display the configuration for all the tags in this script.
-func_config ()
-{
- re_begincf='^# ### BEGIN LIBTOOL'
- re_endcf='^# ### END LIBTOOL'
-
- # Default configuration.
- $SED "1,/$re_begincf CONFIG/d;/$re_endcf CONFIG/,\$d" < "$progpath"
-
- # Now print the configurations for the tags.
- for tagname in $taglist; do
- $SED -n "/$re_begincf TAG CONFIG: $tagname\$/,/$re_endcf TAG CONFIG: $tagname\$/p" < "$progpath"
- done
-
- exit $?
-}
-
-# func_features
-# Display the features supported by this script.
-func_features ()
-{
- echo "host: $host"
- if test "$build_libtool_libs" = yes; then
- echo "enable shared libraries"
- else
- echo "disable shared libraries"
- fi
- if test "$build_old_libs" = yes; then
- echo "enable static libraries"
- else
- echo "disable static libraries"
- fi
-
- exit $?
-}
-
-# func_enable_tag tagname
-# Verify that TAGNAME is valid, and either flag an error and exit, or
-# enable the TAGNAME tag. We also add TAGNAME to the global $taglist
-# variable here.
-func_enable_tag ()
-{
- # Global variable:
- tagname="$1"
-
- re_begincf="^# ### BEGIN LIBTOOL TAG CONFIG: $tagname\$"
- re_endcf="^# ### END LIBTOOL TAG CONFIG: $tagname\$"
- sed_extractcf="/$re_begincf/,/$re_endcf/p"
-
- # Validate tagname.
- case $tagname in
- *[!-_A-Za-z0-9,/]*)
- func_fatal_error "invalid tag name: $tagname"
- ;;
- esac
-
- # Don't test for the "default" C tag, as we know it's
- # there but not specially marked.
- case $tagname in
- CC) ;;
- *)
- if $GREP "$re_begincf" "$progpath" >/dev/null 2>&1; then
- taglist="$taglist $tagname"
-
- # Evaluate the configuration. Be careful to quote the path
- # and the sed script, to avoid splitting on whitespace, but
- # also don't use non-portable quotes within backquotes within
- # quotes we have to do it in 2 steps:
- extractedcf=`$SED -n -e "$sed_extractcf" < "$progpath"`
- eval "$extractedcf"
- else
- func_error "ignoring unknown tag $tagname"
- fi
- ;;
- esac
-}
-
-# func_check_version_match
-# Ensure that we are using m4 macros, and libtool script from the same
-# release of libtool.
-func_check_version_match ()
-{
- if test "$package_revision" != "$macro_revision"; then
- if test "$VERSION" != "$macro_version"; then
- if test -z "$macro_version"; then
- cat >&2 <<_LT_EOF
-$progname: Version mismatch error. This is $PACKAGE $VERSION, but the
-$progname: definition of this LT_INIT comes from an older release.
-$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
-$progname: and run autoconf again.
-_LT_EOF
- else
- cat >&2 <<_LT_EOF
-$progname: Version mismatch error. This is $PACKAGE $VERSION, but the
-$progname: definition of this LT_INIT comes from $PACKAGE $macro_version.
-$progname: You should recreate aclocal.m4 with macros from $PACKAGE $VERSION
-$progname: and run autoconf again.
-_LT_EOF
- fi
- else
- cat >&2 <<_LT_EOF
-$progname: Version mismatch error. This is $PACKAGE $VERSION, revision $package_revision,
-$progname: but the definition of this LT_INIT comes from revision $macro_revision.
-$progname: You should recreate aclocal.m4 with macros from revision $package_revision
-$progname: of $PACKAGE $VERSION and run autoconf again.
-_LT_EOF
- fi
-
- exit $EXIT_MISMATCH
- fi
-}
-
-
-# Shorthand for --mode=foo, only valid as the first argument
-case $1 in
-clean|clea|cle|cl)
- shift; set dummy --mode clean ${1+"$@"}; shift
- ;;
-compile|compil|compi|comp|com|co|c)
- shift; set dummy --mode compile ${1+"$@"}; shift
- ;;
-execute|execut|execu|exec|exe|ex|e)
- shift; set dummy --mode execute ${1+"$@"}; shift
- ;;
-finish|finis|fini|fin|fi|f)
- shift; set dummy --mode finish ${1+"$@"}; shift
- ;;
-install|instal|insta|inst|ins|in|i)
- shift; set dummy --mode install ${1+"$@"}; shift
- ;;
-link|lin|li|l)
- shift; set dummy --mode link ${1+"$@"}; shift
- ;;
-uninstall|uninstal|uninsta|uninst|unins|unin|uni|un|u)
- shift; set dummy --mode uninstall ${1+"$@"}; shift
- ;;
-esac
-
-
-
-# Option defaults:
-opt_debug=:
-opt_dry_run=false
-opt_config=false
-opt_preserve_dup_deps=false
-opt_features=false
-opt_finish=false
-opt_help=false
-opt_help_all=false
-opt_silent=:
-opt_warning=:
-opt_verbose=:
-opt_silent=false
-opt_verbose=false
-
-
-# Parse options once, thoroughly. This comes as soon as possible in the
-# script to make things like `--version' happen as quickly as we can.
-{
- # this just eases exit handling
- while test $# -gt 0; do
- opt="$1"
- shift
- case $opt in
- --debug|-x) opt_debug='set -x'
- func_echo "enabling shell trace mode"
- $opt_debug
- ;;
- --dry-run|--dryrun|-n)
- opt_dry_run=:
- ;;
- --config)
- opt_config=:
-func_config
- ;;
- --dlopen|-dlopen)
- optarg="$1"
- opt_dlopen="${opt_dlopen+$opt_dlopen
-}$optarg"
- shift
- ;;
- --preserve-dup-deps)
- opt_preserve_dup_deps=:
- ;;
- --features)
- opt_features=:
-func_features
- ;;
- --finish)
- opt_finish=:
-set dummy --mode finish ${1+"$@"}; shift
- ;;
- --help)
- opt_help=:
- ;;
- --help-all)
- opt_help_all=:
-opt_help=': help-all'
- ;;
- --mode)
- test $# = 0 && func_missing_arg $opt && break
- optarg="$1"
- opt_mode="$optarg"
-case $optarg in
- # Valid mode arguments:
- clean|compile|execute|finish|install|link|relink|uninstall) ;;
-
- # Catch anything else as an error
- *) func_error "invalid argument for $opt"
- exit_cmd=exit
- break
- ;;
-esac
- shift
- ;;
- --no-silent|--no-quiet)
- opt_silent=false
-func_append preserve_args " $opt"
- ;;
- --no-warning|--no-warn)
- opt_warning=false
-func_append preserve_args " $opt"
- ;;
- --no-verbose)
- opt_verbose=false
-func_append preserve_args " $opt"
- ;;
- --silent|--quiet)
- opt_silent=:
-func_append preserve_args " $opt"
- opt_verbose=false
- ;;
- --verbose|-v)
- opt_verbose=:
-func_append preserve_args " $opt"
-opt_silent=false
- ;;
- --tag)
- test $# = 0 && func_missing_arg $opt && break
- optarg="$1"
- opt_tag="$optarg"
-func_append preserve_args " $opt $optarg"
-func_enable_tag "$optarg"
- shift
- ;;
-
- -\?|-h) func_usage ;;
- --help) func_help ;;
- --version) func_version ;;
-
- # Separate optargs to long options:
- --*=*)
- func_split_long_opt "$opt"
- set dummy "$func_split_long_opt_name" "$func_split_long_opt_arg" ${1+"$@"}
- shift
- ;;
-
- # Separate non-argument short options:
- -\?*|-h*|-n*|-v*)
- func_split_short_opt "$opt"
- set dummy "$func_split_short_opt_name" "-$func_split_short_opt_arg" ${1+"$@"}
- shift
- ;;
-
- --) break ;;
- -*) func_fatal_help "unrecognized option \`$opt'" ;;
- *) set dummy "$opt" ${1+"$@"}; shift; break ;;
- esac
- done
-
- # Validate options:
-
- # save first non-option argument
- if test "$#" -gt 0; then
- nonopt="$opt"
- shift
- fi
-
- # preserve --debug
- test "$opt_debug" = : || func_append preserve_args " --debug"
-
- case $host in
- *cygwin* | *mingw* | *pw32* | *cegcc*)
- # don't eliminate duplications in $postdeps and $predeps
- opt_duplicate_compiler_generated_deps=:
- ;;
- *)
- opt_duplicate_compiler_generated_deps=$opt_preserve_dup_deps
- ;;
- esac
-
- $opt_help || {
- # Sanity checks first:
- func_check_version_match
-
- if test "$build_libtool_libs" != yes && test "$build_old_libs" != yes; then
- func_fatal_configuration "not configured to build any kind of library"
- fi
-
- # Darwin sucks
- eval std_shrext=\"$shrext_cmds\"
-
- # Only execute mode is allowed to have -dlopen flags.
- if test -n "$opt_dlopen" && test "$opt_mode" != execute; then
- func_error "unrecognized option \`-dlopen'"
- $ECHO "$help" 1>&2
- exit $EXIT_FAILURE
- fi
-
- # Change the help message to a mode-specific one.
- generic_help="$help"
- help="Try \`$progname --help --mode=$opt_mode' for more information."
- }
-
-
- # Bail if the options were screwed
- $exit_cmd $EXIT_FAILURE
-}
-
-
-
-
-## ----------- ##
-## Main. ##
-## ----------- ##
-
-# func_lalib_p file
-# True iff FILE is a libtool `.la' library or `.lo' object file.
-# This function is only a basic sanity check; it will hardly flush out
-# determined imposters.
-func_lalib_p ()
-{
- test -f "$1" &&
- $SED -e 4q "$1" 2>/dev/null \
- | $GREP "^# Generated by .*$PACKAGE" > /dev/null 2>&1
-}
-
-# func_lalib_unsafe_p file
-# True iff FILE is a libtool `.la' library or `.lo' object file.
-# This function implements the same check as func_lalib_p without
-# resorting to external programs. To this end, it redirects stdin and
-# closes it afterwards, without saving the original file descriptor.
-# As a safety measure, use it only where a negative result would be
-# fatal anyway. Works if `file' does not exist.
-func_lalib_unsafe_p ()
-{
- lalib_p=no
- if test -f "$1" && test -r "$1" && exec 5<&0 <"$1"; then
- for lalib_p_l in 1 2 3 4
- do
- read lalib_p_line
- case "$lalib_p_line" in
- \#\ Generated\ by\ *$PACKAGE* ) lalib_p=yes; break;;
- esac
- done
- exec 0<&5 5<&-
- fi
- test "$lalib_p" = yes
-}
-
-# func_ltwrapper_script_p file
-# True iff FILE is a libtool wrapper script
-# This function is only a basic sanity check; it will hardly flush out
-# determined imposters.
-func_ltwrapper_script_p ()
-{
- func_lalib_p "$1"
-}
-
-# func_ltwrapper_executable_p file
-# True iff FILE is a libtool wrapper executable
-# This function is only a basic sanity check; it will hardly flush out
-# determined imposters.
-func_ltwrapper_executable_p ()
-{
- func_ltwrapper_exec_suffix=
- case $1 in
- *.exe) ;;
- *) func_ltwrapper_exec_suffix=.exe ;;
- esac
- $GREP "$magic_exe" "$1$func_ltwrapper_exec_suffix" >/dev/null 2>&1
-}
-
-# func_ltwrapper_scriptname file
-# Assumes file is an ltwrapper_executable
-# uses $file to determine the appropriate filename for a
-# temporary ltwrapper_script.
-func_ltwrapper_scriptname ()
-{
- func_dirname_and_basename "$1" "" "."
- func_stripname '' '.exe' "$func_basename_result"
- func_ltwrapper_scriptname_result="$func_dirname_result/$objdir/${func_stripname_result}_ltshwrapper"
-}
-
-# func_ltwrapper_p file
-# True iff FILE is a libtool wrapper script or wrapper executable
-# This function is only a basic sanity check; it will hardly flush out
-# determined imposters.
-func_ltwrapper_p ()
-{
- func_ltwrapper_script_p "$1" || func_ltwrapper_executable_p "$1"
-}
-
-
-# func_execute_cmds commands fail_cmd
-# Execute tilde-delimited COMMANDS.
-# If FAIL_CMD is given, eval that upon failure.
-# FAIL_CMD may read-access the current command in variable CMD!
-func_execute_cmds ()
-{
- $opt_debug
- save_ifs=$IFS; IFS='~'
- for cmd in $1; do
- IFS=$save_ifs
- eval cmd=\"$cmd\"
- func_show_eval "$cmd" "${2-:}"
- done
- IFS=$save_ifs
-}
-
-
-# func_source file
-# Source FILE, adding directory component if necessary.
-# Note that it is not necessary on cygwin/mingw to append a dot to
-# FILE even if both FILE and FILE.exe exist: automatic-append-.exe
-# behavior happens only for exec(3), not for open(2)! Also, sourcing
-# `FILE.' does not work on cygwin managed mounts.
-func_source ()
-{
- $opt_debug
- case $1 in
- */* | *\\*) . "$1" ;;
- *) . "./$1" ;;
- esac
-}
-
-
-# func_resolve_sysroot PATH
-# Replace a leading = in PATH with a sysroot. Store the result into
-# func_resolve_sysroot_result
-func_resolve_sysroot ()
-{
- func_resolve_sysroot_result=$1
- case $func_resolve_sysroot_result in
- =*)
- func_stripname '=' '' "$func_resolve_sysroot_result"
- func_resolve_sysroot_result=$lt_sysroot$func_stripname_result
- ;;
- esac
-}
-
-# func_replace_sysroot PATH
-# If PATH begins with the sysroot, replace it with = and
-# store the result into func_replace_sysroot_result.
-func_replace_sysroot ()
-{
- case "$lt_sysroot:$1" in
- ?*:"$lt_sysroot"*)
- func_stripname "$lt_sysroot" '' "$1"
- func_replace_sysroot_result="=$func_stripname_result"
- ;;
- *)
- # Including no sysroot.
- func_replace_sysroot_result=$1
- ;;
- esac
-}
-
-# func_infer_tag arg
-# Infer tagged configuration to use if any are available and
-# if one wasn't chosen via the "--tag" command line option.
-# Only attempt this if the compiler in the base compile
-# command doesn't match the default compiler.
-# arg is usually of the form 'gcc ...'
-func_infer_tag ()
-{
- $opt_debug
- if test -n "$available_tags" && test -z "$tagname"; then
- CC_quoted=
- for arg in $CC; do
- func_append_quoted CC_quoted "$arg"
- done
- CC_expanded=`func_echo_all $CC`
- CC_quoted_expanded=`func_echo_all $CC_quoted`
- case $@ in
- # Blanks in the command may have been stripped by the calling shell,
- # but not from the CC environment variable when configure was run.
- " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
- " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*) ;;
- # Blanks at the start of $base_compile will cause this to fail
- # if we don't check for them as well.
- *)
- for z in $available_tags; do
- if $GREP "^# ### BEGIN LIBTOOL TAG CONFIG: $z$" < "$progpath" > /dev/null; then
- # Evaluate the configuration.
- eval "`${SED} -n -e '/^# ### BEGIN LIBTOOL TAG CONFIG: '$z'$/,/^# ### END LIBTOOL TAG CONFIG: '$z'$/p' < $progpath`"
- CC_quoted=
- for arg in $CC; do
- # Double-quote args containing other shell metacharacters.
- func_append_quoted CC_quoted "$arg"
- done
- CC_expanded=`func_echo_all $CC`
- CC_quoted_expanded=`func_echo_all $CC_quoted`
- case "$@ " in
- " $CC "* | "$CC "* | " $CC_expanded "* | "$CC_expanded "* | \
- " $CC_quoted"* | "$CC_quoted "* | " $CC_quoted_expanded "* | "$CC_quoted_expanded "*)
- # The compiler in the base compile command matches
- # the one in the tagged configuration.
- # Assume this is the tagged configuration we want.
- tagname=$z
- break
- ;;
- esac
- fi
- done
- # If $tagname still isn't set, then no tagged configuration
- # was found and let the user know that the "--tag" command
- # line option must be used.
- if test -z "$tagname"; then
- func_echo "unable to infer tagged configuration"
- func_fatal_error "specify a tag with \`--tag'"
-# else
-# func_verbose "using $tagname tagged configuration"
- fi
- ;;
- esac
- fi
-}
-
-
-
-# func_write_libtool_object output_name pic_name nonpic_name
-# Create a libtool object file (analogous to a ".la" file),
-# but don't create it if we're doing a dry run.
-func_write_libtool_object ()
-{
- write_libobj=${1}
- if test "$build_libtool_libs" = yes; then
- write_lobj=\'${2}\'
- else
- write_lobj=none
- fi
-
- if test "$build_old_libs" = yes; then
- write_oldobj=\'${3}\'
- else
- write_oldobj=none
- fi
-
- $opt_dry_run || {
- cat >${write_libobj}T <<EOF
-# $write_libobj - a libtool object file
-# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
-#
-# Please DO NOT delete this file!
-# It is necessary for linking the library.
-
-# Name of the PIC object.
-pic_object=$write_lobj
-
-# Name of the non-PIC object
-non_pic_object=$write_oldobj
-
-EOF
- $MV "${write_libobj}T" "${write_libobj}"
- }
-}
-
-
-##################################################
-# FILE NAME AND PATH CONVERSION HELPER FUNCTIONS #
-##################################################
-
-# func_convert_core_file_wine_to_w32 ARG
-# Helper function used by file name conversion functions when $build is *nix,
-# and $host is mingw, cygwin, or some other w32 environment. Relies on a
-# correctly configured wine environment available, with the winepath program
-# in $build's $PATH.
-#
-# ARG is the $build file name to be converted to w32 format.
-# Result is available in $func_convert_core_file_wine_to_w32_result, and will
-# be empty on error (or when ARG is empty)
-func_convert_core_file_wine_to_w32 ()
-{
- $opt_debug
- func_convert_core_file_wine_to_w32_result="$1"
- if test -n "$1"; then
- # Unfortunately, winepath does not exit with a non-zero error code, so we
- # are forced to check the contents of stdout. On the other hand, if the
- # command is not found, the shell will set an exit code of 127 and print
- # *an error message* to stdout. So we must check for both error code of
- # zero AND non-empty stdout, which explains the odd construction:
- func_convert_core_file_wine_to_w32_tmp=`winepath -w "$1" 2>/dev/null`
- if test "$?" -eq 0 && test -n "${func_convert_core_file_wine_to_w32_tmp}"; then
- func_convert_core_file_wine_to_w32_result=`$ECHO "$func_convert_core_file_wine_to_w32_tmp" |
- $SED -e "$lt_sed_naive_backslashify"`
- else
- func_convert_core_file_wine_to_w32_result=
- fi
- fi
-}
-# end: func_convert_core_file_wine_to_w32
-
-
-# func_convert_core_path_wine_to_w32 ARG
-# Helper function used by path conversion functions when $build is *nix, and
-# $host is mingw, cygwin, or some other w32 environment. Relies on a correctly
-# configured wine environment available, with the winepath program in $build's
-# $PATH. Assumes ARG has no leading or trailing path separator characters.
-#
-# ARG is path to be converted from $build format to win32.
-# Result is available in $func_convert_core_path_wine_to_w32_result.
-# Unconvertible file (directory) names in ARG are skipped; if no directory names
-# are convertible, then the result may be empty.
-func_convert_core_path_wine_to_w32 ()
-{
- $opt_debug
- # unfortunately, winepath doesn't convert paths, only file names
- func_convert_core_path_wine_to_w32_result=""
- if test -n "$1"; then
- oldIFS=$IFS
- IFS=:
- for func_convert_core_path_wine_to_w32_f in $1; do
- IFS=$oldIFS
- func_convert_core_file_wine_to_w32 "$func_convert_core_path_wine_to_w32_f"
- if test -n "$func_convert_core_file_wine_to_w32_result" ; then
- if test -z "$func_convert_core_path_wine_to_w32_result"; then
- func_convert_core_path_wine_to_w32_result="$func_convert_core_file_wine_to_w32_result"
- else
- func_append func_convert_core_path_wine_to_w32_result ";$func_convert_core_file_wine_to_w32_result"
- fi
- fi
- done
- IFS=$oldIFS
- fi
-}
-# end: func_convert_core_path_wine_to_w32
-
-
-# func_cygpath ARGS...
-# Wrapper around calling the cygpath program via LT_CYGPATH. This is used when
-# when (1) $build is *nix and Cygwin is hosted via a wine environment; or (2)
-# $build is MSYS and $host is Cygwin, or (3) $build is Cygwin. In case (1) or
-# (2), returns the Cygwin file name or path in func_cygpath_result (input
-# file name or path is assumed to be in w32 format, as previously converted
-# from $build's *nix or MSYS format). In case (3), returns the w32 file name
-# or path in func_cygpath_result (input file name or path is assumed to be in
-# Cygwin format). Returns an empty string on error.
-#
-# ARGS are passed to cygpath, with the last one being the file name or path to
-# be converted.
-#
-# Specify the absolute *nix (or w32) name to cygpath in the LT_CYGPATH
-# environment variable; do not put it in $PATH.
-func_cygpath ()
-{
- $opt_debug
- if test -n "$LT_CYGPATH" && test -f "$LT_CYGPATH"; then
- func_cygpath_result=`$LT_CYGPATH "$@" 2>/dev/null`
- if test "$?" -ne 0; then
- # on failure, ensure result is empty
- func_cygpath_result=
- fi
- else
- func_cygpath_result=
- func_error "LT_CYGPATH is empty or specifies non-existent file: \`$LT_CYGPATH'"
- fi
-}
-#end: func_cygpath
-
-
-# func_convert_core_msys_to_w32 ARG
-# Convert file name or path ARG from MSYS format to w32 format. Return
-# result in func_convert_core_msys_to_w32_result.
-func_convert_core_msys_to_w32 ()
-{
- $opt_debug
- # awkward: cmd appends spaces to result
- func_convert_core_msys_to_w32_result=`( cmd //c echo "$1" ) 2>/dev/null |
- $SED -e 's/[ ]*$//' -e "$lt_sed_naive_backslashify"`
-}
-#end: func_convert_core_msys_to_w32
-
-
-# func_convert_file_check ARG1 ARG2
-# Verify that ARG1 (a file name in $build format) was converted to $host
-# format in ARG2. Otherwise, emit an error message, but continue (resetting
-# func_to_host_file_result to ARG1).
-func_convert_file_check ()
-{
- $opt_debug
- if test -z "$2" && test -n "$1" ; then
- func_error "Could not determine host file name corresponding to"
- func_error " \`$1'"
- func_error "Continuing, but uninstalled executables may not work."
- # Fallback:
- func_to_host_file_result="$1"
- fi
-}
-# end func_convert_file_check
-
-
-# func_convert_path_check FROM_PATHSEP TO_PATHSEP FROM_PATH TO_PATH
-# Verify that FROM_PATH (a path in $build format) was converted to $host
-# format in TO_PATH. Otherwise, emit an error message, but continue, resetting
-# func_to_host_file_result to a simplistic fallback value (see below).
-func_convert_path_check ()
-{
- $opt_debug
- if test -z "$4" && test -n "$3"; then
- func_error "Could not determine the host path corresponding to"
- func_error " \`$3'"
- func_error "Continuing, but uninstalled executables may not work."
- # Fallback. This is a deliberately simplistic "conversion" and
- # should not be "improved". See libtool.info.
- if test "x$1" != "x$2"; then
- lt_replace_pathsep_chars="s|$1|$2|g"
- func_to_host_path_result=`echo "$3" |
- $SED -e "$lt_replace_pathsep_chars"`
- else
- func_to_host_path_result="$3"
- fi
- fi
-}
-# end func_convert_path_check
-
-
-# func_convert_path_front_back_pathsep FRONTPAT BACKPAT REPL ORIG
-# Modifies func_to_host_path_result by prepending REPL if ORIG matches FRONTPAT
-# and appending REPL if ORIG matches BACKPAT.
-func_convert_path_front_back_pathsep ()
-{
- $opt_debug
- case $4 in
- $1 ) func_to_host_path_result="$3$func_to_host_path_result"
- ;;
- esac
- case $4 in
- $2 ) func_append func_to_host_path_result "$3"
- ;;
- esac
-}
-# end func_convert_path_front_back_pathsep
-
-
-##################################################
-# $build to $host FILE NAME CONVERSION FUNCTIONS #
-##################################################
-# invoked via `$to_host_file_cmd ARG'
-#
-# In each case, ARG is the path to be converted from $build to $host format.
-# Result will be available in $func_to_host_file_result.
-
-
-# func_to_host_file ARG
-# Converts the file name ARG from $build format to $host format. Return result
-# in func_to_host_file_result.
-func_to_host_file ()
-{
- $opt_debug
- $to_host_file_cmd "$1"
-}
-# end func_to_host_file
-
-
-# func_to_tool_file ARG LAZY
-# converts the file name ARG from $build format to toolchain format. Return
-# result in func_to_tool_file_result. If the conversion in use is listed
-# in (the comma separated) LAZY, no conversion takes place.
-func_to_tool_file ()
-{
- $opt_debug
- case ,$2, in
- *,"$to_tool_file_cmd",*)
- func_to_tool_file_result=$1
- ;;
- *)
- $to_tool_file_cmd "$1"
- func_to_tool_file_result=$func_to_host_file_result
- ;;
- esac
-}
-# end func_to_tool_file
-
-
-# func_convert_file_noop ARG
-# Copy ARG to func_to_host_file_result.
-func_convert_file_noop ()
-{
- func_to_host_file_result="$1"
-}
-# end func_convert_file_noop
-
-
-# func_convert_file_msys_to_w32 ARG
-# Convert file name ARG from (mingw) MSYS to (mingw) w32 format; automatic
-# conversion to w32 is not available inside the cwrapper. Returns result in
-# func_to_host_file_result.
-func_convert_file_msys_to_w32 ()
-{
- $opt_debug
- func_to_host_file_result="$1"
- if test -n "$1"; then
- func_convert_core_msys_to_w32 "$1"
- func_to_host_file_result="$func_convert_core_msys_to_w32_result"
- fi
- func_convert_file_check "$1" "$func_to_host_file_result"
-}
-# end func_convert_file_msys_to_w32
-
-
-# func_convert_file_cygwin_to_w32 ARG
-# Convert file name ARG from Cygwin to w32 format. Returns result in
-# func_to_host_file_result.
-func_convert_file_cygwin_to_w32 ()
-{
- $opt_debug
- func_to_host_file_result="$1"
- if test -n "$1"; then
- # because $build is cygwin, we call "the" cygpath in $PATH; no need to use
- # LT_CYGPATH in this case.
- func_to_host_file_result=`cygpath -m "$1"`
- fi
- func_convert_file_check "$1" "$func_to_host_file_result"
-}
-# end func_convert_file_cygwin_to_w32
-
-
-# func_convert_file_nix_to_w32 ARG
-# Convert file name ARG from *nix to w32 format. Requires a wine environment
-# and a working winepath. Returns result in func_to_host_file_result.
-func_convert_file_nix_to_w32 ()
-{
- $opt_debug
- func_to_host_file_result="$1"
- if test -n "$1"; then
- func_convert_core_file_wine_to_w32 "$1"
- func_to_host_file_result="$func_convert_core_file_wine_to_w32_result"
- fi
- func_convert_file_check "$1" "$func_to_host_file_result"
-}
-# end func_convert_file_nix_to_w32
-
-
-# func_convert_file_msys_to_cygwin ARG
-# Convert file name ARG from MSYS to Cygwin format. Requires LT_CYGPATH set.
-# Returns result in func_to_host_file_result.
-func_convert_file_msys_to_cygwin ()
-{
- $opt_debug
- func_to_host_file_result="$1"
- if test -n "$1"; then
- func_convert_core_msys_to_w32 "$1"
- func_cygpath -u "$func_convert_core_msys_to_w32_result"
- func_to_host_file_result="$func_cygpath_result"
- fi
- func_convert_file_check "$1" "$func_to_host_file_result"
-}
-# end func_convert_file_msys_to_cygwin
-
-
-# func_convert_file_nix_to_cygwin ARG
-# Convert file name ARG from *nix to Cygwin format. Requires Cygwin installed
-# in a wine environment, working winepath, and LT_CYGPATH set. Returns result
-# in func_to_host_file_result.
-func_convert_file_nix_to_cygwin ()
-{
- $opt_debug
- func_to_host_file_result="$1"
- if test -n "$1"; then
- # convert from *nix to w32, then use cygpath to convert from w32 to cygwin.
- func_convert_core_file_wine_to_w32 "$1"
- func_cygpath -u "$func_convert_core_file_wine_to_w32_result"
- func_to_host_file_result="$func_cygpath_result"
- fi
- func_convert_file_check "$1" "$func_to_host_file_result"
-}
-# end func_convert_file_nix_to_cygwin
-
-
-#############################################
-# $build to $host PATH CONVERSION FUNCTIONS #
-#############################################
-# invoked via `$to_host_path_cmd ARG'
-#
-# In each case, ARG is the path to be converted from $build to $host format.
-# The result will be available in $func_to_host_path_result.
-#
-# Path separators are also converted from $build format to $host format. If
-# ARG begins or ends with a path separator character, it is preserved (but
-# converted to $host format) on output.
-#
-# All path conversion functions are named using the following convention:
-# file name conversion function : func_convert_file_X_to_Y ()
-# path conversion function : func_convert_path_X_to_Y ()
-# where, for any given $build/$host combination the 'X_to_Y' value is the
-# same. If conversion functions are added for new $build/$host combinations,
-# the two new functions must follow this pattern, or func_init_to_host_path_cmd
-# will break.
-
-
-# func_init_to_host_path_cmd
-# Ensures that function "pointer" variable $to_host_path_cmd is set to the
-# appropriate value, based on the value of $to_host_file_cmd.
-to_host_path_cmd=
-func_init_to_host_path_cmd ()
-{
- $opt_debug
- if test -z "$to_host_path_cmd"; then
- func_stripname 'func_convert_file_' '' "$to_host_file_cmd"
- to_host_path_cmd="func_convert_path_${func_stripname_result}"
- fi
-}
-
-
-# func_to_host_path ARG
-# Converts the path ARG from $build format to $host format. Return result
-# in func_to_host_path_result.
-func_to_host_path ()
-{
- $opt_debug
- func_init_to_host_path_cmd
- $to_host_path_cmd "$1"
-}
-# end func_to_host_path
-
-
-# func_convert_path_noop ARG
-# Copy ARG to func_to_host_path_result.
-func_convert_path_noop ()
-{
- func_to_host_path_result="$1"
-}
-# end func_convert_path_noop
-
-
-# func_convert_path_msys_to_w32 ARG
-# Convert path ARG from (mingw) MSYS to (mingw) w32 format; automatic
-# conversion to w32 is not available inside the cwrapper. Returns result in
-# func_to_host_path_result.
-func_convert_path_msys_to_w32 ()
-{
- $opt_debug
- func_to_host_path_result="$1"
- if test -n "$1"; then
- # Remove leading and trailing path separator characters from ARG. MSYS
- # behavior is inconsistent here; cygpath turns them into '.;' and ';.';
- # and winepath ignores them completely.
- func_stripname : : "$1"
- func_to_host_path_tmp1=$func_stripname_result
- func_convert_core_msys_to_w32 "$func_to_host_path_tmp1"
- func_to_host_path_result="$func_convert_core_msys_to_w32_result"
- func_convert_path_check : ";" \
- "$func_to_host_path_tmp1" "$func_to_host_path_result"
- func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
- fi
-}
-# end func_convert_path_msys_to_w32
-
-
-# func_convert_path_cygwin_to_w32 ARG
-# Convert path ARG from Cygwin to w32 format. Returns result in
-# func_to_host_file_result.
-func_convert_path_cygwin_to_w32 ()
-{
- $opt_debug
- func_to_host_path_result="$1"
- if test -n "$1"; then
- # See func_convert_path_msys_to_w32:
- func_stripname : : "$1"
- func_to_host_path_tmp1=$func_stripname_result
- func_to_host_path_result=`cygpath -m -p "$func_to_host_path_tmp1"`
- func_convert_path_check : ";" \
- "$func_to_host_path_tmp1" "$func_to_host_path_result"
- func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
- fi
-}
-# end func_convert_path_cygwin_to_w32
-
-
-# func_convert_path_nix_to_w32 ARG
-# Convert path ARG from *nix to w32 format. Requires a wine environment and
-# a working winepath. Returns result in func_to_host_file_result.
-func_convert_path_nix_to_w32 ()
-{
- $opt_debug
- func_to_host_path_result="$1"
- if test -n "$1"; then
- # See func_convert_path_msys_to_w32:
- func_stripname : : "$1"
- func_to_host_path_tmp1=$func_stripname_result
- func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1"
- func_to_host_path_result="$func_convert_core_path_wine_to_w32_result"
- func_convert_path_check : ";" \
- "$func_to_host_path_tmp1" "$func_to_host_path_result"
- func_convert_path_front_back_pathsep ":*" "*:" ";" "$1"
- fi
-}
-# end func_convert_path_nix_to_w32
-
-
-# func_convert_path_msys_to_cygwin ARG
-# Convert path ARG from MSYS to Cygwin format. Requires LT_CYGPATH set.
-# Returns result in func_to_host_file_result.
-func_convert_path_msys_to_cygwin ()
-{
- $opt_debug
- func_to_host_path_result="$1"
- if test -n "$1"; then
- # See func_convert_path_msys_to_w32:
- func_stripname : : "$1"
- func_to_host_path_tmp1=$func_stripname_result
- func_convert_core_msys_to_w32 "$func_to_host_path_tmp1"
- func_cygpath -u -p "$func_convert_core_msys_to_w32_result"
- func_to_host_path_result="$func_cygpath_result"
- func_convert_path_check : : \
- "$func_to_host_path_tmp1" "$func_to_host_path_result"
- func_convert_path_front_back_pathsep ":*" "*:" : "$1"
- fi
-}
-# end func_convert_path_msys_to_cygwin
-
-
-# func_convert_path_nix_to_cygwin ARG
-# Convert path ARG from *nix to Cygwin format. Requires Cygwin installed in a
-# a wine environment, working winepath, and LT_CYGPATH set. Returns result in
-# func_to_host_file_result.
-func_convert_path_nix_to_cygwin ()
-{
- $opt_debug
- func_to_host_path_result="$1"
- if test -n "$1"; then
- # Remove leading and trailing path separator characters from
- # ARG. msys behavior is inconsistent here, cygpath turns them
- # into '.;' and ';.', and winepath ignores them completely.
- func_stripname : : "$1"
- func_to_host_path_tmp1=$func_stripname_result
- func_convert_core_path_wine_to_w32 "$func_to_host_path_tmp1"
- func_cygpath -u -p "$func_convert_core_path_wine_to_w32_result"
- func_to_host_path_result="$func_cygpath_result"
- func_convert_path_check : : \
- "$func_to_host_path_tmp1" "$func_to_host_path_result"
- func_convert_path_front_back_pathsep ":*" "*:" : "$1"
- fi
-}
-# end func_convert_path_nix_to_cygwin
-
-
-# func_mode_compile arg...
-func_mode_compile ()
-{
- $opt_debug
- # Get the compilation command and the source file.
- base_compile=
- srcfile="$nonopt" # always keep a non-empty value in "srcfile"
- suppress_opt=yes
- suppress_output=
- arg_mode=normal
- libobj=
- later=
- pie_flag=
-
- for arg
- do
- case $arg_mode in
- arg )
- # do not "continue". Instead, add this to base_compile
- lastarg="$arg"
- arg_mode=normal
- ;;
-
- target )
- libobj="$arg"
- arg_mode=normal
- continue
- ;;
-
- normal )
- # Accept any command-line options.
- case $arg in
- -o)
- test -n "$libobj" && \
- func_fatal_error "you cannot specify \`-o' more than once"
- arg_mode=target
- continue
- ;;
-
- -pie | -fpie | -fPIE)
- func_append pie_flag " $arg"
- continue
- ;;
-
- -shared | -static | -prefer-pic | -prefer-non-pic)
- func_append later " $arg"
- continue
- ;;
-
- -no-suppress)
- suppress_opt=no
- continue
- ;;
-
- -Xcompiler)
- arg_mode=arg # the next one goes into the "base_compile" arg list
- continue # The current "srcfile" will either be retained or
- ;; # replaced later. I would guess that would be a bug.
-
- -Wc,*)
- func_stripname '-Wc,' '' "$arg"
- args=$func_stripname_result
- lastarg=
- save_ifs="$IFS"; IFS=','
- for arg in $args; do
- IFS="$save_ifs"
- func_append_quoted lastarg "$arg"
- done
- IFS="$save_ifs"
- func_stripname ' ' '' "$lastarg"
- lastarg=$func_stripname_result
-
- # Add the arguments to base_compile.
- func_append base_compile " $lastarg"
- continue
- ;;
-
- *)
- # Accept the current argument as the source file.
- # The previous "srcfile" becomes the current argument.
- #
- lastarg="$srcfile"
- srcfile="$arg"
- ;;
- esac # case $arg
- ;;
- esac # case $arg_mode
-
- # Aesthetically quote the previous argument.
- func_append_quoted base_compile "$lastarg"
- done # for arg
-
- case $arg_mode in
- arg)
- func_fatal_error "you must specify an argument for -Xcompile"
- ;;
- target)
- func_fatal_error "you must specify a target with \`-o'"
- ;;
- *)
- # Get the name of the library object.
- test -z "$libobj" && {
- func_basename "$srcfile"
- libobj="$func_basename_result"
- }
- ;;
- esac
-
- # Recognize several different file suffixes.
- # If the user specifies -o file.o, it is replaced with file.lo
- case $libobj in
- *.[cCFSifmso] | \
- *.ada | *.adb | *.ads | *.asm | \
- *.c++ | *.cc | *.ii | *.class | *.cpp | *.cxx | \
- *.[fF][09]? | *.for | *.java | *.go | *.obj | *.sx | *.cu | *.cup)
- func_xform "$libobj"
- libobj=$func_xform_result
- ;;
- esac
-
- case $libobj in
- *.lo) func_lo2o "$libobj"; obj=$func_lo2o_result ;;
- *)
- func_fatal_error "cannot determine name of library object from \`$libobj'"
- ;;
- esac
-
- func_infer_tag $base_compile
-
- for arg in $later; do
- case $arg in
- -shared)
- test "$build_libtool_libs" != yes && \
- func_fatal_configuration "can not build a shared library"
- build_old_libs=no
- continue
- ;;
-
- -static)
- build_libtool_libs=no
- build_old_libs=yes
- continue
- ;;
-
- -prefer-pic)
- pic_mode=yes
- continue
- ;;
-
- -prefer-non-pic)
- pic_mode=no
- continue
- ;;
- esac
- done
-
- func_quote_for_eval "$libobj"
- test "X$libobj" != "X$func_quote_for_eval_result" \
- && $ECHO "X$libobj" | $GREP '[]~#^*{};<>?"'"'"' &()|`$[]' \
- && func_warning "libobj name \`$libobj' may not contain shell special characters."
- func_dirname_and_basename "$obj" "/" ""
- objname="$func_basename_result"
- xdir="$func_dirname_result"
- lobj=${xdir}$objdir/$objname
-
- test -z "$base_compile" && \
- func_fatal_help "you must specify a compilation command"
-
- # Delete any leftover library objects.
- if test "$build_old_libs" = yes; then
- removelist="$obj $lobj $libobj ${libobj}T"
- else
- removelist="$lobj $libobj ${libobj}T"
- fi
-
- # On Cygwin there's no "real" PIC flag so we must build both object types
- case $host_os in
- cygwin* | mingw* | pw32* | os2* | cegcc*)
- pic_mode=default
- ;;
- esac
- if test "$pic_mode" = no && test "$deplibs_check_method" != pass_all; then
- # non-PIC code in shared libraries is not supported
- pic_mode=default
- fi
-
- # Calculate the filename of the output object if compiler does
- # not support -o with -c
- if test "$compiler_c_o" = no; then
- output_obj=`$ECHO "$srcfile" | $SED 's%^.*/%%; s%\.[^.]*$%%'`.${objext}
- lockfile="$output_obj.lock"
- else
- output_obj=
- need_locks=no
- lockfile=
- fi
-
- # Lock this critical section if it is needed
- # We use this script file to make the link, it avoids creating a new file
- if test "$need_locks" = yes; then
- until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
- func_echo "Waiting for $lockfile to be removed"
- sleep 2
- done
- elif test "$need_locks" = warn; then
- if test -f "$lockfile"; then
- $ECHO "\
-*** ERROR, $lockfile exists and contains:
-`cat $lockfile 2>/dev/null`
-
-This indicates that another process is trying to use the same
-temporary object file, and libtool could not work around it because
-your compiler does not support \`-c' and \`-o' together. If you
-repeat this compilation, it may succeed, by chance, but you had better
-avoid parallel builds (make -j) in this platform, or get a better
-compiler."
-
- $opt_dry_run || $RM $removelist
- exit $EXIT_FAILURE
- fi
- func_append removelist " $output_obj"
- $ECHO "$srcfile" > "$lockfile"
- fi
-
- $opt_dry_run || $RM $removelist
- func_append removelist " $lockfile"
- trap '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE' 1 2 15
-
- func_to_tool_file "$srcfile" func_convert_file_msys_to_w32
- srcfile=$func_to_tool_file_result
- func_quote_for_eval "$srcfile"
- qsrcfile=$func_quote_for_eval_result
-
- # Only build a PIC object if we are building libtool libraries.
- if test "$build_libtool_libs" = yes; then
- # Without this assignment, base_compile gets emptied.
- fbsd_hideous_sh_bug=$base_compile
-
- if test "$pic_mode" != no; then
- command="$base_compile $qsrcfile $pic_flag"
- else
- # Don't build PIC code
- command="$base_compile $qsrcfile"
- fi
-
- func_mkdir_p "$xdir$objdir"
-
- if test -z "$output_obj"; then
- # Place PIC objects in $objdir
- func_append command " -o $lobj"
- fi
-
- func_show_eval_locale "$command" \
- 'test -n "$output_obj" && $RM $removelist; exit $EXIT_FAILURE'
-
- if test "$need_locks" = warn &&
- test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
- $ECHO "\
-*** ERROR, $lockfile contains:
-`cat $lockfile 2>/dev/null`
-
-but it should contain:
-$srcfile
-
-This indicates that another process is trying to use the same
-temporary object file, and libtool could not work around it because
-your compiler does not support \`-c' and \`-o' together. If you
-repeat this compilation, it may succeed, by chance, but you had better
-avoid parallel builds (make -j) in this platform, or get a better
-compiler."
-
- $opt_dry_run || $RM $removelist
- exit $EXIT_FAILURE
- fi
-
- # Just move the object if needed, then go on to compile the next one
- if test -n "$output_obj" && test "X$output_obj" != "X$lobj"; then
- func_show_eval '$MV "$output_obj" "$lobj"' \
- 'error=$?; $opt_dry_run || $RM $removelist; exit $error'
- fi
-
- # Allow error messages only from the first compilation.
- if test "$suppress_opt" = yes; then
- suppress_output=' >/dev/null 2>&1'
- fi
- fi
-
- # Only build a position-dependent object if we build old libraries.
- if test "$build_old_libs" = yes; then
- if test "$pic_mode" != yes; then
- # Don't build PIC code
- command="$base_compile $qsrcfile$pie_flag"
- else
- command="$base_compile $qsrcfile $pic_flag"
- fi
- if test "$compiler_c_o" = yes; then
- func_append command " -o $obj"
- fi
-
- # Suppress compiler output if we already did a PIC compilation.
- func_append command "$suppress_output"
- func_show_eval_locale "$command" \
- '$opt_dry_run || $RM $removelist; exit $EXIT_FAILURE'
-
- if test "$need_locks" = warn &&
- test "X`cat $lockfile 2>/dev/null`" != "X$srcfile"; then
- $ECHO "\
-*** ERROR, $lockfile contains:
-`cat $lockfile 2>/dev/null`
-
-but it should contain:
-$srcfile
-
-This indicates that another process is trying to use the same
-temporary object file, and libtool could not work around it because
-your compiler does not support \`-c' and \`-o' together. If you
-repeat this compilation, it may succeed, by chance, but you had better
-avoid parallel builds (make -j) in this platform, or get a better
-compiler."
-
- $opt_dry_run || $RM $removelist
- exit $EXIT_FAILURE
- fi
-
- # Just move the object if needed
- if test -n "$output_obj" && test "X$output_obj" != "X$obj"; then
- func_show_eval '$MV "$output_obj" "$obj"' \
- 'error=$?; $opt_dry_run || $RM $removelist; exit $error'
- fi
- fi
-
- $opt_dry_run || {
- func_write_libtool_object "$libobj" "$objdir/$objname" "$objname"
-
- # Unlock the critical section if it was locked
- if test "$need_locks" != no; then
- removelist=$lockfile
- $RM "$lockfile"
- fi
- }
-
- exit $EXIT_SUCCESS
-}
-
-$opt_help || {
- test "$opt_mode" = compile && func_mode_compile ${1+"$@"}
-}
-
-func_mode_help ()
-{
- # We need to display help for each of the modes.
- case $opt_mode in
- "")
- # Generic help is extracted from the usage comments
- # at the start of this file.
- func_help
- ;;
-
- clean)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=clean RM [RM-OPTION]... FILE...
-
-Remove files from the build directory.
-
-RM is the name of the program to use to delete files associated with each FILE
-(typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed
-to RM.
-
-If FILE is a libtool library, object or program, all the files associated
-with it are deleted. Otherwise, only FILE itself is deleted using RM."
- ;;
-
- compile)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=compile COMPILE-COMMAND... SOURCEFILE
-
-Compile a source file into a libtool library object.
-
-This mode accepts the following additional options:
-
- -o OUTPUT-FILE set the output file name to OUTPUT-FILE
- -no-suppress do not suppress compiler output for multiple passes
- -prefer-pic try to build PIC objects only
- -prefer-non-pic try to build non-PIC objects only
- -shared do not build a \`.o' file suitable for static linking
- -static only build a \`.o' file suitable for static linking
- -Wc,FLAG pass FLAG directly to the compiler
-
-COMPILE-COMMAND is a command to be used in creating a \`standard' object file
-from the given SOURCEFILE.
-
-The output file name is determined by removing the directory component from
-SOURCEFILE, then substituting the C source code suffix \`.c' with the
-library object suffix, \`.lo'."
- ;;
-
- execute)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=execute COMMAND [ARGS]...
-
-Automatically set library path, then run a program.
-
-This mode accepts the following additional options:
-
- -dlopen FILE add the directory containing FILE to the library path
-
-This mode sets the library path environment variable according to \`-dlopen'
-flags.
-
-If any of the ARGS are libtool executable wrappers, then they are translated
-into their corresponding uninstalled binary, and any of their required library
-directories are added to the library path.
-
-Then, COMMAND is executed, with ARGS as arguments."
- ;;
-
- finish)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=finish [LIBDIR]...
-
-Complete the installation of libtool libraries.
-
-Each LIBDIR is a directory that contains libtool libraries.
-
-The commands that this mode executes may require superuser privileges. Use
-the \`--dry-run' option if you just want to see what would be executed."
- ;;
-
- install)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=install INSTALL-COMMAND...
-
-Install executables or libraries.
-
-INSTALL-COMMAND is the installation command. The first component should be
-either the \`install' or \`cp' program.
-
-The following components of INSTALL-COMMAND are treated specially:
-
- -inst-prefix-dir PREFIX-DIR Use PREFIX-DIR as a staging area for installation
-
-The rest of the components are interpreted as arguments to that command (only
-BSD-compatible install options are recognized)."
- ;;
-
- link)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=link LINK-COMMAND...
-
-Link object files or libraries together to form another library, or to
-create an executable program.
-
-LINK-COMMAND is a command using the C compiler that you would use to create
-a program from several object files.
-
-The following components of LINK-COMMAND are treated specially:
-
- -all-static do not do any dynamic linking at all
- -avoid-version do not add a version suffix if possible
- -bindir BINDIR specify path to binaries directory (for systems where
- libraries must be found in the PATH setting at runtime)
- -dlopen FILE \`-dlpreopen' FILE if it cannot be dlopened at runtime
- -dlpreopen FILE link in FILE and add its symbols to lt_preloaded_symbols
- -export-dynamic allow symbols from OUTPUT-FILE to be resolved with dlsym(3)
- -export-symbols SYMFILE
- try to export only the symbols listed in SYMFILE
- -export-symbols-regex REGEX
- try to export only the symbols matching REGEX
- -LLIBDIR search LIBDIR for required installed libraries
- -lNAME OUTPUT-FILE requires the installed library libNAME
- -module build a library that can dlopened
- -no-fast-install disable the fast-install mode
- -no-install link a not-installable executable
- -no-undefined declare that a library does not refer to external symbols
- -o OUTPUT-FILE create OUTPUT-FILE from the specified objects
- -objectlist FILE Use a list of object files found in FILE to specify objects
- -precious-files-regex REGEX
- don't remove output files matching REGEX
- -release RELEASE specify package release information
- -rpath LIBDIR the created library will eventually be installed in LIBDIR
- -R[ ]LIBDIR add LIBDIR to the runtime path of programs and libraries
- -shared only do dynamic linking of libtool libraries
- -shrext SUFFIX override the standard shared library file extension
- -static do not do any dynamic linking of uninstalled libtool libraries
- -static-libtool-libs
- do not do any dynamic linking of libtool libraries
- -version-info CURRENT[:REVISION[:AGE]]
- specify library version info [each variable defaults to 0]
- -weak LIBNAME declare that the target provides the LIBNAME interface
- -Wc,FLAG
- -Xcompiler FLAG pass linker-specific FLAG directly to the compiler
- -Wl,FLAG
- -Xlinker FLAG pass linker-specific FLAG directly to the linker
- -XCClinker FLAG pass link-specific FLAG to the compiler driver (CC)
-
-All other options (arguments beginning with \`-') are ignored.
-
-Every other argument is treated as a filename. Files ending in \`.la' are
-treated as uninstalled libtool libraries, other files are standard or library
-object files.
-
-If the OUTPUT-FILE ends in \`.la', then a libtool library is created,
-only library objects (\`.lo' files) may be specified, and \`-rpath' is
-required, except when creating a convenience library.
-
-If OUTPUT-FILE ends in \`.a' or \`.lib', then a standard library is created
-using \`ar' and \`ranlib', or on Windows using \`lib'.
-
-If OUTPUT-FILE ends in \`.lo' or \`.${objext}', then a reloadable object file
-is created, otherwise an executable program is created."
- ;;
-
- uninstall)
- $ECHO \
-"Usage: $progname [OPTION]... --mode=uninstall RM [RM-OPTION]... FILE...
-
-Remove libraries from an installation directory.
-
-RM is the name of the program to use to delete files associated with each FILE
-(typically \`/bin/rm'). RM-OPTIONS are options (such as \`-f') to be passed
-to RM.
-
-If FILE is a libtool library, all the files associated with it are deleted.
-Otherwise, only FILE itself is deleted using RM."
- ;;
-
- *)
- func_fatal_help "invalid operation mode \`$opt_mode'"
- ;;
- esac
-
- echo
- $ECHO "Try \`$progname --help' for more information about other modes."
-}
-
-# Now that we've collected a possible --mode arg, show help if necessary
-if $opt_help; then
- if test "$opt_help" = :; then
- func_mode_help
- else
- {
- func_help noexit
- for opt_mode in compile link execute install finish uninstall clean; do
- func_mode_help
- done
- } | sed -n '1p; 2,$s/^Usage:/ or: /p'
- {
- func_help noexit
- for opt_mode in compile link execute install finish uninstall clean; do
- echo
- func_mode_help
- done
- } |
- sed '1d
- /^When reporting/,/^Report/{
- H
- d
- }
- $x
- /information about other modes/d
- /more detailed .*MODE/d
- s/^Usage:.*--mode=\([^ ]*\) .*/Description of \1 mode:/'
- fi
- exit $?
-fi
-
-
-# func_mode_execute arg...
-func_mode_execute ()
-{
- $opt_debug
- # The first argument is the command name.
- cmd="$nonopt"
- test -z "$cmd" && \
- func_fatal_help "you must specify a COMMAND"
-
- # Handle -dlopen flags immediately.
- for file in $opt_dlopen; do
- test -f "$file" \
- || func_fatal_help "\`$file' is not a file"
-
- dir=
- case $file in
- *.la)
- func_resolve_sysroot "$file"
- file=$func_resolve_sysroot_result
-
- # Check to see that this really is a libtool archive.
- func_lalib_unsafe_p "$file" \
- || func_fatal_help "\`$lib' is not a valid libtool archive"
-
- # Read the libtool library.
- dlname=
- library_names=
- func_source "$file"
-
- # Skip this library if it cannot be dlopened.
- if test -z "$dlname"; then
- # Warn if it was a shared library.
- test -n "$library_names" && \
- func_warning "\`$file' was not linked with \`-export-dynamic'"
- continue
- fi
-
- func_dirname "$file" "" "."
- dir="$func_dirname_result"
-
- if test -f "$dir/$objdir/$dlname"; then
- func_append dir "/$objdir"
- else
- if test ! -f "$dir/$dlname"; then
- func_fatal_error "cannot find \`$dlname' in \`$dir' or \`$dir/$objdir'"
- fi
- fi
- ;;
-
- *.lo)
- # Just add the directory containing the .lo file.
- func_dirname "$file" "" "."
- dir="$func_dirname_result"
- ;;
-
- *)
- func_warning "\`-dlopen' is ignored for non-libtool libraries and objects"
- continue
- ;;
- esac
-
- # Get the absolute pathname.
- absdir=`cd "$dir" && pwd`
- test -n "$absdir" && dir="$absdir"
-
- # Now add the directory to shlibpath_var.
- if eval "test -z \"\$$shlibpath_var\""; then
- eval "$shlibpath_var=\"\$dir\""
- else
- eval "$shlibpath_var=\"\$dir:\$$shlibpath_var\""
- fi
- done
-
- # This variable tells wrapper scripts just to set shlibpath_var
- # rather than running their programs.
- libtool_execute_magic="$magic"
-
- # Check if any of the arguments is a wrapper script.
- args=
- for file
- do
- case $file in
- -* | *.la | *.lo ) ;;
- *)
- # Do a test to see if this is really a libtool program.
- if func_ltwrapper_script_p "$file"; then
- func_source "$file"
- # Transform arg to wrapped name.
- file="$progdir/$program"
- elif func_ltwrapper_executable_p "$file"; then
- func_ltwrapper_scriptname "$file"
- func_source "$func_ltwrapper_scriptname_result"
- # Transform arg to wrapped name.
- file="$progdir/$program"
- fi
- ;;
- esac
- # Quote arguments (to preserve shell metacharacters).
- func_append_quoted args "$file"
- done
-
- if test "X$opt_dry_run" = Xfalse; then
- if test -n "$shlibpath_var"; then
- # Export the shlibpath_var.
- eval "export $shlibpath_var"
- fi
-
- # Restore saved environment variables
- for lt_var in LANG LANGUAGE LC_ALL LC_CTYPE LC_COLLATE LC_MESSAGES
- do
- eval "if test \"\${save_$lt_var+set}\" = set; then
- $lt_var=\$save_$lt_var; export $lt_var
- else
- $lt_unset $lt_var
- fi"
- done
-
- # Now prepare to actually exec the command.
- exec_cmd="\$cmd$args"
- else
- # Display what would be done.
- if test -n "$shlibpath_var"; then
- eval "\$ECHO \"\$shlibpath_var=\$$shlibpath_var\""
- echo "export $shlibpath_var"
- fi
- $ECHO "$cmd$args"
- exit $EXIT_SUCCESS
- fi
-}
-
-test "$opt_mode" = execute && func_mode_execute ${1+"$@"}
-
-
-# func_mode_finish arg...
-func_mode_finish ()
-{
- $opt_debug
- libs=
- libdirs=
- admincmds=
-
- for opt in "$nonopt" ${1+"$@"}
- do
- if test -d "$opt"; then
- func_append libdirs " $opt"
-
- elif test -f "$opt"; then
- if func_lalib_unsafe_p "$opt"; then
- func_append libs " $opt"
- else
- func_warning "\`$opt' is not a valid libtool archive"
- fi
-
- else
- func_fatal_error "invalid argument \`$opt'"
- fi
- done
-
- if test -n "$libs"; then
- if test -n "$lt_sysroot"; then
- sysroot_regex=`$ECHO "$lt_sysroot" | $SED "$sed_make_literal_regex"`
- sysroot_cmd="s/\([ ']\)$sysroot_regex/\1/g;"
- else
- sysroot_cmd=
- fi
-
- # Remove sysroot references
- if $opt_dry_run; then
- for lib in $libs; do
- echo "removing references to $lt_sysroot and \`=' prefixes from $lib"
- done
- else
- tmpdir=`func_mktempdir`
- for lib in $libs; do
- sed -e "${sysroot_cmd} s/\([ ']-[LR]\)=/\1/g; s/\([ ']\)=/\1/g" $lib \
- > $tmpdir/tmp-la
- mv -f $tmpdir/tmp-la $lib
- done
- ${RM}r "$tmpdir"
- fi
- fi
-
- if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
- for libdir in $libdirs; do
- if test -n "$finish_cmds"; then
- # Do each command in the finish commands.
- func_execute_cmds "$finish_cmds" 'admincmds="$admincmds
-'"$cmd"'"'
- fi
- if test -n "$finish_eval"; then
- # Do the single finish_eval.
- eval cmds=\"$finish_eval\"
- $opt_dry_run || eval "$cmds" || func_append admincmds "
- $cmds"
- fi
- done
- fi
-
- # Exit here if they wanted silent mode.
- $opt_silent && exit $EXIT_SUCCESS
-
- if test -n "$finish_cmds$finish_eval" && test -n "$libdirs"; then
- echo "----------------------------------------------------------------------"
- echo "Libraries have been installed in:"
- for libdir in $libdirs; do
- $ECHO " $libdir"
- done
- echo
- echo "If you ever happen to want to link against installed libraries"
- echo "in a given directory, LIBDIR, you must either use libtool, and"
- echo "specify the full pathname of the library, or use the \`-LLIBDIR'"
- echo "flag during linking and do at least one of the following:"
- if test -n "$shlibpath_var"; then
- echo " - add LIBDIR to the \`$shlibpath_var' environment variable"
- echo " during execution"
- fi
- if test -n "$runpath_var"; then
- echo " - add LIBDIR to the \`$runpath_var' environment variable"
- echo " during linking"
- fi
- if test -n "$hardcode_libdir_flag_spec"; then
- libdir=LIBDIR
- eval flag=\"$hardcode_libdir_flag_spec\"
-
- $ECHO " - use the \`$flag' linker flag"
- fi
- if test -n "$admincmds"; then
- $ECHO " - have your system administrator run these commands:$admincmds"
- fi
- if test -f /etc/ld.so.conf; then
- echo " - have your system administrator add LIBDIR to \`/etc/ld.so.conf'"
- fi
- echo
-
- echo "See any operating system documentation about shared libraries for"
- case $host in
- solaris2.[6789]|solaris2.1[0-9])
- echo "more information, such as the ld(1), crle(1) and ld.so(8) manual"
- echo "pages."
- ;;
- *)
- echo "more information, such as the ld(1) and ld.so(8) manual pages."
- ;;
- esac
- echo "----------------------------------------------------------------------"
- fi
- exit $EXIT_SUCCESS
-}
-
-test "$opt_mode" = finish && func_mode_finish ${1+"$@"}
-
-
-# func_mode_install arg...
-func_mode_install ()
-{
- $opt_debug
- # There may be an optional sh(1) argument at the beginning of
- # install_prog (especially on Windows NT).
- if test "$nonopt" = "$SHELL" || test "$nonopt" = /bin/sh ||
- # Allow the use of GNU shtool's install command.
- case $nonopt in *shtool*) :;; *) false;; esac; then
- # Aesthetically quote it.
- func_quote_for_eval "$nonopt"
- install_prog="$func_quote_for_eval_result "
- arg=$1
- shift
- else
- install_prog=
- arg=$nonopt
- fi
-
- # The real first argument should be the name of the installation program.
- # Aesthetically quote it.
- func_quote_for_eval "$arg"
- func_append install_prog "$func_quote_for_eval_result"
- install_shared_prog=$install_prog
- case " $install_prog " in
- *[\\\ /]cp\ *) install_cp=: ;;
- *) install_cp=false ;;
- esac
-
- # We need to accept at least all the BSD install flags.
- dest=
- files=
- opts=
- prev=
- install_type=
- isdir=no
- stripme=
- no_mode=:
- for arg
- do
- arg2=
- if test -n "$dest"; then
- func_append files " $dest"
- dest=$arg
- continue
- fi
-
- case $arg in
- -d) isdir=yes ;;
- -f)
- if $install_cp; then :; else
- prev=$arg
- fi
- ;;
- -g | -m | -o)
- prev=$arg
- ;;
- -s)
- stripme=" -s"
- continue
- ;;
- -*)
- ;;
- *)
- # If the previous option needed an argument, then skip it.
- if test -n "$prev"; then
- if test "x$prev" = x-m && test -n "$install_override_mode"; then
- arg2=$install_override_mode
- no_mode=false
- fi
- prev=
- else
- dest=$arg
- continue
- fi
- ;;
- esac
-
- # Aesthetically quote the argument.
- func_quote_for_eval "$arg"
- func_append install_prog " $func_quote_for_eval_result"
- if test -n "$arg2"; then
- func_quote_for_eval "$arg2"
- fi
- func_append install_shared_prog " $func_quote_for_eval_result"
- done
-
- test -z "$install_prog" && \
- func_fatal_help "you must specify an install program"
-
- test -n "$prev" && \
- func_fatal_help "the \`$prev' option requires an argument"
-
- if test -n "$install_override_mode" && $no_mode; then
- if $install_cp; then :; else
- func_quote_for_eval "$install_override_mode"
- func_append install_shared_prog " -m $func_quote_for_eval_result"
- fi
- fi
-
- if test -z "$files"; then
- if test -z "$dest"; then
- func_fatal_help "no file or destination specified"
- else
- func_fatal_help "you must specify a destination"
- fi
- fi
-
- # Strip any trailing slash from the destination.
- func_stripname '' '/' "$dest"
- dest=$func_stripname_result
-
- # Check to see that the destination is a directory.
- test -d "$dest" && isdir=yes
- if test "$isdir" = yes; then
- destdir="$dest"
- destname=
- else
- func_dirname_and_basename "$dest" "" "."
- destdir="$func_dirname_result"
- destname="$func_basename_result"
-
- # Not a directory, so check to see that there is only one file specified.
- set dummy $files; shift
- test "$#" -gt 1 && \
- func_fatal_help "\`$dest' is not a directory"
- fi
- case $destdir in
- [\\/]* | [A-Za-z]:[\\/]*) ;;
- *)
- for file in $files; do
- case $file in
- *.lo) ;;
- *)
- func_fatal_help "\`$destdir' must be an absolute directory name"
- ;;
- esac
- done
- ;;
- esac
-
- # This variable tells wrapper scripts just to set variables rather
- # than running their programs.
- libtool_install_magic="$magic"
-
- staticlibs=
- future_libdirs=
- current_libdirs=
- for file in $files; do
-
- # Do each installation.
- case $file in
- *.$libext)
- # Do the static libraries later.
- func_append staticlibs " $file"
- ;;
-
- *.la)
- func_resolve_sysroot "$file"
- file=$func_resolve_sysroot_result
-
- # Check to see that this really is a libtool archive.
- func_lalib_unsafe_p "$file" \
- || func_fatal_help "\`$file' is not a valid libtool archive"
-
- library_names=
- old_library=
- relink_command=
- func_source "$file"
-
- # Add the libdir to current_libdirs if it is the destination.
- if test "X$destdir" = "X$libdir"; then
- case "$current_libdirs " in
- *" $libdir "*) ;;
- *) func_append current_libdirs " $libdir" ;;
- esac
- else
- # Note the libdir as a future libdir.
- case "$future_libdirs " in
- *" $libdir "*) ;;
- *) func_append future_libdirs " $libdir" ;;
- esac
- fi
-
- func_dirname "$file" "/" ""
- dir="$func_dirname_result"
- func_append dir "$objdir"
-
- if test -n "$relink_command"; then
- # Determine the prefix the user has applied to our future dir.
- inst_prefix_dir=`$ECHO "$destdir" | $SED -e "s%$libdir\$%%"`
-
- # Don't allow the user to place us outside of our expected
- # location b/c this prevents finding dependent libraries that
- # are installed to the same prefix.
- # At present, this check doesn't affect windows .dll's that
- # are installed into $libdir/../bin (currently, that works fine)
- # but it's something to keep an eye on.
- test "$inst_prefix_dir" = "$destdir" && \
- func_fatal_error "error: cannot install \`$file' to a directory not ending in $libdir"
-
- if test -n "$inst_prefix_dir"; then
- # Stick the inst_prefix_dir data into the link command.
- relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%-inst-prefix-dir $inst_prefix_dir%"`
- else
- relink_command=`$ECHO "$relink_command" | $SED "s%@inst_prefix_dir@%%"`
- fi
-
- func_warning "relinking \`$file'"
- func_show_eval "$relink_command" \
- 'func_fatal_error "error: relink \`$file'\'' with the above command before installing it"'
- fi
-
- # See the names of the shared library.
- set dummy $library_names; shift
- if test -n "$1"; then
- realname="$1"
- shift
-
- srcname="$realname"
- test -n "$relink_command" && srcname="$realname"T
-
- # Install the shared library and build the symlinks.
- func_show_eval "$install_shared_prog $dir/$srcname $destdir/$realname" \
- 'exit $?'
- tstripme="$stripme"
- case $host_os in
- cygwin* | mingw* | pw32* | cegcc*)
- case $realname in
- *.dll.a)
- tstripme=""
- ;;
- esac
- ;;
- esac
- if test -n "$tstripme" && test -n "$striplib"; then
- func_show_eval "$striplib $destdir/$realname" 'exit $?'
- fi
-
- if test "$#" -gt 0; then
- # Delete the old symlinks, and create new ones.
- # Try `ln -sf' first, because the `ln' binary might depend on
- # the symlink we replace! Solaris /bin/ln does not understand -f,
- # so we also need to try rm && ln -s.
- for linkname
- do
- test "$linkname" != "$realname" \
- && func_show_eval "(cd $destdir && { $LN_S -f $realname $linkname || { $RM $linkname && $LN_S $realname $linkname; }; })"
- done
- fi
-
- # Do each command in the postinstall commands.
- lib="$destdir/$realname"
- func_execute_cmds "$postinstall_cmds" 'exit $?'
- fi
-
- # Install the pseudo-library for information purposes.
- func_basename "$file"
- name="$func_basename_result"
- instname="$dir/$name"i
- func_show_eval "$install_prog $instname $destdir/$name" 'exit $?'
-
- # Maybe install the static library, too.
- test -n "$old_library" && func_append staticlibs " $dir/$old_library"
- ;;
-
- *.lo)
- # Install (i.e. copy) a libtool object.
-
- # Figure out destination file name, if it wasn't already specified.
- if test -n "$destname"; then
- destfile="$destdir/$destname"
- else
- func_basename "$file"
- destfile="$func_basename_result"
- destfile="$destdir/$destfile"
- fi
-
- # Deduce the name of the destination old-style object file.
- case $destfile in
- *.lo)
- func_lo2o "$destfile"
- staticdest=$func_lo2o_result
- ;;
- *.$objext)
- staticdest="$destfile"
- destfile=
- ;;
- *)
- func_fatal_help "cannot copy a libtool object to \`$destfile'"
- ;;
- esac
-
- # Install the libtool object if requested.
- test -n "$destfile" && \
- func_show_eval "$install_prog $file $destfile" 'exit $?'
-
- # Install the old object if enabled.
- if test "$build_old_libs" = yes; then
- # Deduce the name of the old-style object file.
- func_lo2o "$file"
- staticobj=$func_lo2o_result
- func_show_eval "$install_prog \$staticobj \$staticdest" 'exit $?'
- fi
- exit $EXIT_SUCCESS
- ;;
-
- *)
- # Figure out destination file name, if it wasn't already specified.
- if test -n "$destname"; then
- destfile="$destdir/$destname"
- else
- func_basename "$file"
- destfile="$func_basename_result"
- destfile="$destdir/$destfile"
- fi
-
- # If the file is missing, and there is a .exe on the end, strip it
- # because it is most likely a libtool script we actually want to
- # install
- stripped_ext=""
- case $file in
- *.exe)
- if test ! -f "$file"; then
- func_stripname '' '.exe' "$file"
- file=$func_stripname_result
- stripped_ext=".exe"
- fi
- ;;
- esac
-
- # Do a test to see if this is really a libtool program.
- case $host in
- *cygwin* | *mingw*)
- if func_ltwrapper_executable_p "$file"; then
- func_ltwrapper_scriptname "$file"
- wrapper=$func_ltwrapper_scriptname_result
- else
- func_stripname '' '.exe' "$file"
- wrapper=$func_stripname_result
- fi
- ;;
- *)
- wrapper=$file
- ;;
- esac
- if func_ltwrapper_script_p "$wrapper"; then
- notinst_deplibs=
- relink_command=
-
- func_source "$wrapper"
-
- # Check the variables that should have been set.
- test -z "$generated_by_libtool_version" && \
- func_fatal_error "invalid libtool wrapper script \`$wrapper'"
-
- finalize=yes
- for lib in $notinst_deplibs; do
- # Check to see that each library is installed.
- libdir=
- if test -f "$lib"; then
- func_source "$lib"
- fi
- libfile="$libdir/"`$ECHO "$lib" | $SED 's%^.*/%%g'` ### testsuite: skip nested quoting test
- if test -n "$libdir" && test ! -f "$libfile"; then
- func_warning "\`$lib' has not been installed in \`$libdir'"
- finalize=no
- fi
- done
-
- relink_command=
- func_source "$wrapper"
-
- outputname=
- if test "$fast_install" = no && test -n "$relink_command"; then
- $opt_dry_run || {
- if test "$finalize" = yes; then
- tmpdir=`func_mktempdir`
- func_basename "$file$stripped_ext"
- file="$func_basename_result"
- outputname="$tmpdir/$file"
- # Replace the output file specification.
- relink_command=`$ECHO "$relink_command" | $SED 's%@OUTPUT@%'"$outputname"'%g'`
-
- $opt_silent || {
- func_quote_for_expand "$relink_command"
- eval "func_echo $func_quote_for_expand_result"
- }
- if eval "$relink_command"; then :
- else
- func_error "error: relink \`$file' with the above command before installing it"
- $opt_dry_run || ${RM}r "$tmpdir"
- continue
- fi
- file="$outputname"
- else
- func_warning "cannot relink \`$file'"
- fi
- }
- else
- # Install the binary that we compiled earlier.
- file=`$ECHO "$file$stripped_ext" | $SED "s%\([^/]*\)$%$objdir/\1%"`
- fi
- fi
-
- # remove .exe since cygwin /usr/bin/install will append another
- # one anyway
- case $install_prog,$host in
- */usr/bin/install*,*cygwin*)
- case $file:$destfile in
- *.exe:*.exe)
- # this is ok
- ;;
- *.exe:*)
- destfile=$destfile.exe
- ;;
- *:*.exe)
- func_stripname '' '.exe' "$destfile"
- destfile=$func_stripname_result
- ;;
- esac
- ;;
- esac
- func_show_eval "$install_prog\$stripme \$file \$destfile" 'exit $?'
- $opt_dry_run || if test -n "$outputname"; then
- ${RM}r "$tmpdir"
- fi
- ;;
- esac
- done
-
- for file in $staticlibs; do
- func_basename "$file"
- name="$func_basename_result"
-
- # Set up the ranlib parameters.
- oldlib="$destdir/$name"
- func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
- tool_oldlib=$func_to_tool_file_result
-
- func_show_eval "$install_prog \$file \$oldlib" 'exit $?'
-
- if test -n "$stripme" && test -n "$old_striplib"; then
- func_show_eval "$old_striplib $tool_oldlib" 'exit $?'
- fi
-
- # Do each command in the postinstall commands.
- func_execute_cmds "$old_postinstall_cmds" 'exit $?'
- done
-
- test -n "$future_libdirs" && \
- func_warning "remember to run \`$progname --finish$future_libdirs'"
-
- if test -n "$current_libdirs"; then
- # Maybe just do a dry run.
- $opt_dry_run && current_libdirs=" -n$current_libdirs"
- exec_cmd='$SHELL $progpath $preserve_args --finish$current_libdirs'
- else
- exit $EXIT_SUCCESS
- fi
-}
-
-test "$opt_mode" = install && func_mode_install ${1+"$@"}
-
-
-# func_generate_dlsyms outputname originator pic_p
-# Extract symbols from dlprefiles and create ${outputname}S.o with
-# a dlpreopen symbol table.
-func_generate_dlsyms ()
-{
- $opt_debug
- my_outputname="$1"
- my_originator="$2"
- my_pic_p="${3-no}"
- my_prefix=`$ECHO "$my_originator" | sed 's%[^a-zA-Z0-9]%_%g'`
- my_dlsyms=
-
- if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
- if test -n "$NM" && test -n "$global_symbol_pipe"; then
- my_dlsyms="${my_outputname}S.c"
- else
- func_error "not configured to extract global symbols from dlpreopened files"
- fi
- fi
-
- if test -n "$my_dlsyms"; then
- case $my_dlsyms in
- "") ;;
- *.c)
- # Discover the nlist of each of the dlfiles.
- nlist="$output_objdir/${my_outputname}.nm"
-
- func_show_eval "$RM $nlist ${nlist}S ${nlist}T"
-
- # Parse the name list into a source file.
- func_verbose "creating $output_objdir/$my_dlsyms"
-
- $opt_dry_run || $ECHO > "$output_objdir/$my_dlsyms" "\
-/* $my_dlsyms - symbol resolution table for \`$my_outputname' dlsym emulation. */
-/* Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION */
-
-#ifdef __cplusplus
-extern \"C\" {
-#endif
-
-#if defined(__GNUC__) && (((__GNUC__ == 4) && (__GNUC_MINOR__ >= 4)) || (__GNUC__ > 4))
-#pragma GCC diagnostic ignored \"-Wstrict-prototypes\"
-#endif
-
-/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */
-#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
-/* DATA imports from DLLs on WIN32 con't be const, because runtime
- relocations are performed -- see ld's documentation on pseudo-relocs. */
-# define LT_DLSYM_CONST
-#elif defined(__osf__)
-/* This system does not cope well with relocations in const data. */
-# define LT_DLSYM_CONST
-#else
-# define LT_DLSYM_CONST const
-#endif
-
-/* External symbol declarations for the compiler. */\
-"
-
- if test "$dlself" = yes; then
- func_verbose "generating symbol list for \`$output'"
-
- $opt_dry_run || echo ': @PROGRAM@ ' > "$nlist"
-
- # Add our own program objects to the symbol list.
- progfiles=`$ECHO "$objs$old_deplibs" | $SP2NL | $SED "$lo2o" | $NL2SP`
- for progfile in $progfiles; do
- func_to_tool_file "$progfile" func_convert_file_msys_to_w32
- func_verbose "extracting global C symbols from \`$func_to_tool_file_result'"
- $opt_dry_run || eval "$NM $func_to_tool_file_result | $global_symbol_pipe >> '$nlist'"
- done
-
- if test -n "$exclude_expsyms"; then
- $opt_dry_run || {
- eval '$EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T'
- eval '$MV "$nlist"T "$nlist"'
- }
- fi
-
- if test -n "$export_symbols_regex"; then
- $opt_dry_run || {
- eval '$EGREP -e "$export_symbols_regex" "$nlist" > "$nlist"T'
- eval '$MV "$nlist"T "$nlist"'
- }
- fi
-
- # Prepare the list of exported symbols
- if test -z "$export_symbols"; then
- export_symbols="$output_objdir/$outputname.exp"
- $opt_dry_run || {
- $RM $export_symbols
- eval "${SED} -n -e '/^: @PROGRAM@ $/d' -e 's/^.* \(.*\)$/\1/p' "'< "$nlist" > "$export_symbols"'
- case $host in
- *cygwin* | *mingw* | *cegcc* )
- eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
- eval 'cat "$export_symbols" >> "$output_objdir/$outputname.def"'
- ;;
- esac
- }
- else
- $opt_dry_run || {
- eval "${SED} -e 's/\([].[*^$]\)/\\\\\1/g' -e 's/^/ /' -e 's/$/$/'"' < "$export_symbols" > "$output_objdir/$outputname.exp"'
- eval '$GREP -f "$output_objdir/$outputname.exp" < "$nlist" > "$nlist"T'
- eval '$MV "$nlist"T "$nlist"'
- case $host in
- *cygwin* | *mingw* | *cegcc* )
- eval "echo EXPORTS "'> "$output_objdir/$outputname.def"'
- eval 'cat "$nlist" >> "$output_objdir/$outputname.def"'
- ;;
- esac
- }
- fi
- fi
-
- for dlprefile in $dlprefiles; do
- func_verbose "extracting global C symbols from \`$dlprefile'"
- func_basename "$dlprefile"
- name="$func_basename_result"
- case $host in
- *cygwin* | *mingw* | *cegcc* )
- # if an import library, we need to obtain dlname
- if func_win32_import_lib_p "$dlprefile"; then
- func_tr_sh "$dlprefile"
- eval "curr_lafile=\$libfile_$func_tr_sh_result"
- dlprefile_dlbasename=""
- if test -n "$curr_lafile" && func_lalib_p "$curr_lafile"; then
- # Use subshell, to avoid clobbering current variable values
- dlprefile_dlname=`source "$curr_lafile" && echo "$dlname"`
- if test -n "$dlprefile_dlname" ; then
- func_basename "$dlprefile_dlname"
- dlprefile_dlbasename="$func_basename_result"
- else
- # no lafile. user explicitly requested -dlpreopen <import library>.
- $sharedlib_from_linklib_cmd "$dlprefile"
- dlprefile_dlbasename=$sharedlib_from_linklib_result
- fi
- fi
- $opt_dry_run || {
- if test -n "$dlprefile_dlbasename" ; then
- eval '$ECHO ": $dlprefile_dlbasename" >> "$nlist"'
- else
- func_warning "Could not compute DLL name from $name"
- eval '$ECHO ": $name " >> "$nlist"'
- fi
- func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
- eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe |
- $SED -e '/I __imp/d' -e 's/I __nm_/D /;s/_nm__//' >> '$nlist'"
- }
- else # not an import lib
- $opt_dry_run || {
- eval '$ECHO ": $name " >> "$nlist"'
- func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
- eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'"
- }
- fi
- ;;
- *)
- $opt_dry_run || {
- eval '$ECHO ": $name " >> "$nlist"'
- func_to_tool_file "$dlprefile" func_convert_file_msys_to_w32
- eval "$NM \"$func_to_tool_file_result\" 2>/dev/null | $global_symbol_pipe >> '$nlist'"
- }
- ;;
- esac
- done
-
- $opt_dry_run || {
- # Make sure we have at least an empty file.
- test -f "$nlist" || : > "$nlist"
-
- if test -n "$exclude_expsyms"; then
- $EGREP -v " ($exclude_expsyms)$" "$nlist" > "$nlist"T
- $MV "$nlist"T "$nlist"
- fi
-
- # Try sorting and uniquifying the output.
- if $GREP -v "^: " < "$nlist" |
- if sort -k 3 </dev/null >/dev/null 2>&1; then
- sort -k 3
- else
- sort +2
- fi |
- uniq > "$nlist"S; then
- :
- else
- $GREP -v "^: " < "$nlist" > "$nlist"S
- fi
-
- if test -f "$nlist"S; then
- eval "$global_symbol_to_cdecl"' < "$nlist"S >> "$output_objdir/$my_dlsyms"'
- else
- echo '/* NONE */' >> "$output_objdir/$my_dlsyms"
- fi
-
- echo >> "$output_objdir/$my_dlsyms" "\
-
-/* The mapping between symbol names and symbols. */
-typedef struct {
- const char *name;
- void *address;
-} lt_dlsymlist;
-extern LT_DLSYM_CONST lt_dlsymlist
-lt_${my_prefix}_LTX_preloaded_symbols[];
-LT_DLSYM_CONST lt_dlsymlist
-lt_${my_prefix}_LTX_preloaded_symbols[] =
-{\
- { \"$my_originator\", (void *) 0 },"
-
- case $need_lib_prefix in
- no)
- eval "$global_symbol_to_c_name_address" < "$nlist" >> "$output_objdir/$my_dlsyms"
- ;;
- *)
- eval "$global_symbol_to_c_name_address_lib_prefix" < "$nlist" >> "$output_objdir/$my_dlsyms"
- ;;
- esac
- echo >> "$output_objdir/$my_dlsyms" "\
- {0, (void *) 0}
-};
-
-/* This works around a problem in FreeBSD linker */
-#ifdef FREEBSD_WORKAROUND
-static const void *lt_preloaded_setup() {
- return lt_${my_prefix}_LTX_preloaded_symbols;
-}
-#endif
-
-#ifdef __cplusplus
-}
-#endif\
-"
- } # !$opt_dry_run
-
- pic_flag_for_symtable=
- case "$compile_command " in
- *" -static "*) ;;
- *)
- case $host in
- # compiling the symbol table file with pic_flag works around
- # a FreeBSD bug that causes programs to crash when -lm is
- # linked before any other PIC object. But we must not use
- # pic_flag when linking with -static. The problem exists in
- # FreeBSD 2.2.6 and is fixed in FreeBSD 3.1.
- *-*-freebsd2.*|*-*-freebsd3.0*|*-*-freebsdelf3.0*)
- pic_flag_for_symtable=" $pic_flag -DFREEBSD_WORKAROUND" ;;
- *-*-hpux*)
- pic_flag_for_symtable=" $pic_flag" ;;
- *)
- if test "X$my_pic_p" != Xno; then
- pic_flag_for_symtable=" $pic_flag"
- fi
- ;;
- esac
- ;;
- esac
- symtab_cflags=
- for arg in $LTCFLAGS; do
- case $arg in
- -pie | -fpie | -fPIE) ;;
- *) func_append symtab_cflags " $arg" ;;
- esac
- done
-
- # Now compile the dynamic symbol file.
- func_show_eval '(cd $output_objdir && $LTCC$symtab_cflags -c$no_builtin_flag$pic_flag_for_symtable "$my_dlsyms")' 'exit $?'
-
- # Clean up the generated files.
- func_show_eval '$RM "$output_objdir/$my_dlsyms" "$nlist" "${nlist}S" "${nlist}T"'
-
- # Transform the symbol file into the correct name.
- symfileobj="$output_objdir/${my_outputname}S.$objext"
- case $host in
- *cygwin* | *mingw* | *cegcc* )
- if test -f "$output_objdir/$my_outputname.def"; then
- compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
- finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$output_objdir/$my_outputname.def $symfileobj%"`
- else
- compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"`
- finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"`
- fi
- ;;
- *)
- compile_command=`$ECHO "$compile_command" | $SED "s%@SYMFILE@%$symfileobj%"`
- finalize_command=`$ECHO "$finalize_command" | $SED "s%@SYMFILE@%$symfileobj%"`
- ;;
- esac
- ;;
- *)
- func_fatal_error "unknown suffix for \`$my_dlsyms'"
- ;;
- esac
- else
- # We keep going just in case the user didn't refer to
- # lt_preloaded_symbols. The linker will fail if global_symbol_pipe
- # really was required.
-
- # Nullify the symbol file.
- compile_command=`$ECHO "$compile_command" | $SED "s% @SYMFILE@%%"`
- finalize_command=`$ECHO "$finalize_command" | $SED "s% @SYMFILE@%%"`
- fi
-}
-
-# func_win32_libid arg
-# return the library type of file 'arg'
-#
-# Need a lot of goo to handle *both* DLLs and import libs
-# Has to be a shell function in order to 'eat' the argument
-# that is supplied when $file_magic_command is called.
-# Despite the name, also deal with 64 bit binaries.
-func_win32_libid ()
-{
- $opt_debug
- win32_libid_type="unknown"
- win32_fileres=`file -L $1 2>/dev/null`
- case $win32_fileres in
- *ar\ archive\ import\ library*) # definitely import
- win32_libid_type="x86 archive import"
- ;;
- *ar\ archive*) # could be an import, or static
- # Keep the egrep pattern in sync with the one in _LT_CHECK_MAGIC_METHOD.
- if eval $OBJDUMP -f $1 | $SED -e '10q' 2>/dev/null |
- $EGREP 'file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)' >/dev/null; then
- func_to_tool_file "$1" func_convert_file_msys_to_w32
- win32_nmres=`eval $NM -f posix -A \"$func_to_tool_file_result\" |
- $SED -n -e '
- 1,100{
- / I /{
- s,.*,import,
- p
- q
- }
- }'`
- case $win32_nmres in
- import*) win32_libid_type="x86 archive import";;
- *) win32_libid_type="x86 archive static";;
- esac
- fi
- ;;
- *DLL*)
- win32_libid_type="x86 DLL"
- ;;
- *executable*) # but shell scripts are "executable" too...
- case $win32_fileres in
- *MS\ Windows\ PE\ Intel*)
- win32_libid_type="x86 DLL"
- ;;
- esac
- ;;
- esac
- $ECHO "$win32_libid_type"
-}
-
-# func_cygming_dll_for_implib ARG
-#
-# Platform-specific function to extract the
-# name of the DLL associated with the specified
-# import library ARG.
-# Invoked by eval'ing the libtool variable
-# $sharedlib_from_linklib_cmd
-# Result is available in the variable
-# $sharedlib_from_linklib_result
-func_cygming_dll_for_implib ()
-{
- $opt_debug
- sharedlib_from_linklib_result=`$DLLTOOL --identify-strict --identify "$1"`
-}
-
-# func_cygming_dll_for_implib_fallback_core SECTION_NAME LIBNAMEs
-#
-# The is the core of a fallback implementation of a
-# platform-specific function to extract the name of the
-# DLL associated with the specified import library LIBNAME.
-#
-# SECTION_NAME is either .idata$6 or .idata$7, depending
-# on the platform and compiler that created the implib.
-#
-# Echos the name of the DLL associated with the
-# specified import library.
-func_cygming_dll_for_implib_fallback_core ()
-{
- $opt_debug
- match_literal=`$ECHO "$1" | $SED "$sed_make_literal_regex"`
- $OBJDUMP -s --section "$1" "$2" 2>/dev/null |
- $SED '/^Contents of section '"$match_literal"':/{
- # Place marker at beginning of archive member dllname section
- s/.*/====MARK====/
- p
- d
- }
- # These lines can sometimes be longer than 43 characters, but
- # are always uninteresting
- /:[ ]*file format pe[i]\{,1\}-/d
- /^In archive [^:]*:/d
- # Ensure marker is printed
- /^====MARK====/p
- # Remove all lines with less than 43 characters
- /^.\{43\}/!d
- # From remaining lines, remove first 43 characters
- s/^.\{43\}//' |
- $SED -n '
- # Join marker and all lines until next marker into a single line
- /^====MARK====/ b para
- H
- $ b para
- b
- :para
- x
- s/\n//g
- # Remove the marker
- s/^====MARK====//
- # Remove trailing dots and whitespace
- s/[\. \t]*$//
- # Print
- /./p' |
- # we now have a list, one entry per line, of the stringified
- # contents of the appropriate section of all members of the
- # archive which possess that section. Heuristic: eliminate
- # all those which have a first or second character that is
- # a '.' (that is, objdump's representation of an unprintable
- # character.) This should work for all archives with less than
- # 0x302f exports -- but will fail for DLLs whose name actually
- # begins with a literal '.' or a single character followed by
- # a '.'.
- #
- # Of those that remain, print the first one.
- $SED -e '/^\./d;/^.\./d;q'
-}
-
-# func_cygming_gnu_implib_p ARG
-# This predicate returns with zero status (TRUE) if
-# ARG is a GNU/binutils-style import library. Returns
-# with nonzero status (FALSE) otherwise.
-func_cygming_gnu_implib_p ()
-{
- $opt_debug
- func_to_tool_file "$1" func_convert_file_msys_to_w32
- func_cygming_gnu_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $EGREP ' (_head_[A-Za-z0-9_]+_[ad]l*|[A-Za-z0-9_]+_[ad]l*_iname)$'`
- test -n "$func_cygming_gnu_implib_tmp"
-}
-
-# func_cygming_ms_implib_p ARG
-# This predicate returns with zero status (TRUE) if
-# ARG is an MS-style import library. Returns
-# with nonzero status (FALSE) otherwise.
-func_cygming_ms_implib_p ()
-{
- $opt_debug
- func_to_tool_file "$1" func_convert_file_msys_to_w32
- func_cygming_ms_implib_tmp=`$NM "$func_to_tool_file_result" | eval "$global_symbol_pipe" | $GREP '_NULL_IMPORT_DESCRIPTOR'`
- test -n "$func_cygming_ms_implib_tmp"
-}
-
-# func_cygming_dll_for_implib_fallback ARG
-# Platform-specific function to extract the
-# name of the DLL associated with the specified
-# import library ARG.
-#
-# This fallback implementation is for use when $DLLTOOL
-# does not support the --identify-strict option.
-# Invoked by eval'ing the libtool variable
-# $sharedlib_from_linklib_cmd
-# Result is available in the variable
-# $sharedlib_from_linklib_result
-func_cygming_dll_for_implib_fallback ()
-{
- $opt_debug
- if func_cygming_gnu_implib_p "$1" ; then
- # binutils import library
- sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$7' "$1"`
- elif func_cygming_ms_implib_p "$1" ; then
- # ms-generated import library
- sharedlib_from_linklib_result=`func_cygming_dll_for_implib_fallback_core '.idata$6' "$1"`
- else
- # unknown
- sharedlib_from_linklib_result=""
- fi
-}
-
-
-# func_extract_an_archive dir oldlib
-func_extract_an_archive ()
-{
- $opt_debug
- f_ex_an_ar_dir="$1"; shift
- f_ex_an_ar_oldlib="$1"
- if test "$lock_old_archive_extraction" = yes; then
- lockfile=$f_ex_an_ar_oldlib.lock
- until $opt_dry_run || ln "$progpath" "$lockfile" 2>/dev/null; do
- func_echo "Waiting for $lockfile to be removed"
- sleep 2
- done
- fi
- func_show_eval "(cd \$f_ex_an_ar_dir && $AR x \"\$f_ex_an_ar_oldlib\")" \
- 'stat=$?; rm -f "$lockfile"; exit $stat'
- if test "$lock_old_archive_extraction" = yes; then
- $opt_dry_run || rm -f "$lockfile"
- fi
- if ($AR t "$f_ex_an_ar_oldlib" | sort | sort -uc >/dev/null 2>&1); then
- :
- else
- func_fatal_error "object name conflicts in archive: $f_ex_an_ar_dir/$f_ex_an_ar_oldlib"
- fi
-}
-
-
-# func_extract_archives gentop oldlib ...
-func_extract_archives ()
-{
- $opt_debug
- my_gentop="$1"; shift
- my_oldlibs=${1+"$@"}
- my_oldobjs=""
- my_xlib=""
- my_xabs=""
- my_xdir=""
-
- for my_xlib in $my_oldlibs; do
- # Extract the objects.
- case $my_xlib in
- [\\/]* | [A-Za-z]:[\\/]*) my_xabs="$my_xlib" ;;
- *) my_xabs=`pwd`"/$my_xlib" ;;
- esac
- func_basename "$my_xlib"
- my_xlib="$func_basename_result"
- my_xlib_u=$my_xlib
- while :; do
- case " $extracted_archives " in
- *" $my_xlib_u "*)
- func_arith $extracted_serial + 1
- extracted_serial=$func_arith_result
- my_xlib_u=lt$extracted_serial-$my_xlib ;;
- *) break ;;
- esac
- done
- extracted_archives="$extracted_archives $my_xlib_u"
- my_xdir="$my_gentop/$my_xlib_u"
-
- func_mkdir_p "$my_xdir"
-
- case $host in
- *-darwin*)
- func_verbose "Extracting $my_xabs"
- # Do not bother doing anything if just a dry run
- $opt_dry_run || {
- darwin_orig_dir=`pwd`
- cd $my_xdir || exit $?
- darwin_archive=$my_xabs
- darwin_curdir=`pwd`
- darwin_base_archive=`basename "$darwin_archive"`
- darwin_arches=`$LIPO -info "$darwin_archive" 2>/dev/null | $GREP Architectures 2>/dev/null || true`
- if test -n "$darwin_arches"; then
- darwin_arches=`$ECHO "$darwin_arches" | $SED -e 's/.*are://'`
- darwin_arch=
- func_verbose "$darwin_base_archive has multiple architectures $darwin_arches"
- for darwin_arch in $darwin_arches ; do
- func_mkdir_p "unfat-$$/${darwin_base_archive}-${darwin_arch}"
- $LIPO -thin $darwin_arch -output "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}" "${darwin_archive}"
- cd "unfat-$$/${darwin_base_archive}-${darwin_arch}"
- func_extract_an_archive "`pwd`" "${darwin_base_archive}"
- cd "$darwin_curdir"
- $RM "unfat-$$/${darwin_base_archive}-${darwin_arch}/${darwin_base_archive}"
- done # $darwin_arches
- ## Okay now we've a bunch of thin objects, gotta fatten them up :)
- darwin_filelist=`find unfat-$$ -type f -name \*.o -print -o -name \*.lo -print | $SED -e "$basename" | sort -u`
- darwin_file=
- darwin_files=
- for darwin_file in $darwin_filelist; do
- darwin_files=`find unfat-$$ -name $darwin_file -print | sort | $NL2SP`
- $LIPO -create -output "$darwin_file" $darwin_files
- done # $darwin_filelist
- $RM -rf unfat-$$
- cd "$darwin_orig_dir"
- else
- cd $darwin_orig_dir
- func_extract_an_archive "$my_xdir" "$my_xabs"
- fi # $darwin_arches
- } # !$opt_dry_run
- ;;
- *)
- func_extract_an_archive "$my_xdir" "$my_xabs"
- ;;
- esac
- my_oldobjs="$my_oldobjs "`find $my_xdir -name \*.$objext -print -o -name \*.lo -print | sort | $NL2SP`
- done
-
- func_extract_archives_result="$my_oldobjs"
-}
-
-
-# func_emit_wrapper [arg=no]
-#
-# Emit a libtool wrapper script on stdout.
-# Don't directly open a file because we may want to
-# incorporate the script contents within a cygwin/mingw
-# wrapper executable. Must ONLY be called from within
-# func_mode_link because it depends on a number of variables
-# set therein.
-#
-# ARG is the value that the WRAPPER_SCRIPT_BELONGS_IN_OBJDIR
-# variable will take. If 'yes', then the emitted script
-# will assume that the directory in which it is stored is
-# the $objdir directory. This is a cygwin/mingw-specific
-# behavior.
-func_emit_wrapper ()
-{
- func_emit_wrapper_arg1=${1-no}
-
- $ECHO "\
-#! $SHELL
-
-# $output - temporary wrapper script for $objdir/$outputname
-# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
-#
-# The $output program cannot be directly executed until all the libtool
-# libraries that it depends on are installed.
-#
-# This wrapper script should never be moved out of the build directory.
-# If it is, it will not operate correctly.
-
-# Sed substitution that helps us do robust quoting. It backslashifies
-# metacharacters that are still active within double-quoted strings.
-sed_quote_subst='$sed_quote_subst'
-
-# Be Bourne compatible
-if test -n \"\${ZSH_VERSION+set}\" && (emulate sh) >/dev/null 2>&1; then
- emulate sh
- NULLCMD=:
- # Zsh 3.x and 4.x performs word splitting on \${1+\"\$@\"}, which
- # is contrary to our usage. Disable this feature.
- alias -g '\${1+\"\$@\"}'='\"\$@\"'
- setopt NO_GLOB_SUBST
-else
- case \`(set -o) 2>/dev/null\` in *posix*) set -o posix;; esac
-fi
-BIN_SH=xpg4; export BIN_SH # for Tru64
-DUALCASE=1; export DUALCASE # for MKS sh
-
-# The HP-UX ksh and POSIX shell print the target directory to stdout
-# if CDPATH is set.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
-
-relink_command=\"$relink_command\"
-
-# This environment variable determines our operation mode.
-if test \"\$libtool_install_magic\" = \"$magic\"; then
- # install mode needs the following variables:
- generated_by_libtool_version='$macro_version'
- notinst_deplibs='$notinst_deplibs'
-else
- # When we are sourced in execute mode, \$file and \$ECHO are already set.
- if test \"\$libtool_execute_magic\" != \"$magic\"; then
- file=\"\$0\""
-
- qECHO=`$ECHO "$ECHO" | $SED "$sed_quote_subst"`
- $ECHO "\
-
-# A function that is used when there is no print builtin or printf.
-func_fallback_echo ()
-{
- eval 'cat <<_LTECHO_EOF
-\$1
-_LTECHO_EOF'
-}
- ECHO=\"$qECHO\"
- fi
-
-# Very basic option parsing. These options are (a) specific to
-# the libtool wrapper, (b) are identical between the wrapper
-# /script/ and the wrapper /executable/ which is used only on
-# windows platforms, and (c) all begin with the string "--lt-"
-# (application programs are unlikely to have options which match
-# this pattern).
-#
-# There are only two supported options: --lt-debug and
-# --lt-dump-script. There is, deliberately, no --lt-help.
-#
-# The first argument to this parsing function should be the
-# script's $0 value, followed by "$@".
-lt_option_debug=
-func_parse_lt_options ()
-{
- lt_script_arg0=\$0
- shift
- for lt_opt
- do
- case \"\$lt_opt\" in
- --lt-debug) lt_option_debug=1 ;;
- --lt-dump-script)
- lt_dump_D=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%/[^/]*$%%'\`
- test \"X\$lt_dump_D\" = \"X\$lt_script_arg0\" && lt_dump_D=.
- lt_dump_F=\`\$ECHO \"X\$lt_script_arg0\" | $SED -e 's/^X//' -e 's%^.*/%%'\`
- cat \"\$lt_dump_D/\$lt_dump_F\"
- exit 0
- ;;
- --lt-*)
- \$ECHO \"Unrecognized --lt- option: '\$lt_opt'\" 1>&2
- exit 1
- ;;
- esac
- done
-
- # Print the debug banner immediately:
- if test -n \"\$lt_option_debug\"; then
- echo \"${outputname}:${output}:\${LINENO}: libtool wrapper (GNU $PACKAGE$TIMESTAMP) $VERSION\" 1>&2
- fi
-}
-
-# Used when --lt-debug. Prints its arguments to stdout
-# (redirection is the responsibility of the caller)
-func_lt_dump_args ()
-{
- lt_dump_args_N=1;
- for lt_arg
- do
- \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[\$lt_dump_args_N]: \$lt_arg\"
- lt_dump_args_N=\`expr \$lt_dump_args_N + 1\`
- done
-}
-
-# Core function for launching the target application
-func_exec_program_core ()
-{
-"
- case $host in
- # Backslashes separate directories on plain windows
- *-*-mingw | *-*-os2* | *-cegcc*)
- $ECHO "\
- if test -n \"\$lt_option_debug\"; then
- \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir\\\\\$program\" 1>&2
- func_lt_dump_args \${1+\"\$@\"} 1>&2
- fi
- exec \"\$progdir\\\\\$program\" \${1+\"\$@\"}
-"
- ;;
-
- *)
- $ECHO "\
- if test -n \"\$lt_option_debug\"; then
- \$ECHO \"${outputname}:${output}:\${LINENO}: newargv[0]: \$progdir/\$program\" 1>&2
- func_lt_dump_args \${1+\"\$@\"} 1>&2
- fi
- exec \"\$progdir/\$program\" \${1+\"\$@\"}
-"
- ;;
- esac
- $ECHO "\
- \$ECHO \"\$0: cannot exec \$program \$*\" 1>&2
- exit 1
-}
-
-# A function to encapsulate launching the target application
-# Strips options in the --lt-* namespace from \$@ and
-# launches target application with the remaining arguments.
-func_exec_program ()
-{
- case \" \$* \" in
- *\\ --lt-*)
- for lt_wr_arg
- do
- case \$lt_wr_arg in
- --lt-*) ;;
- *) set x \"\$@\" \"\$lt_wr_arg\"; shift;;
- esac
- shift
- done ;;
- esac
- func_exec_program_core \${1+\"\$@\"}
-}
-
- # Parse options
- func_parse_lt_options \"\$0\" \${1+\"\$@\"}
-
- # Find the directory that this script lives in.
- thisdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*$%%'\`
- test \"x\$thisdir\" = \"x\$file\" && thisdir=.
-
- # Follow symbolic links until we get to the real thisdir.
- file=\`ls -ld \"\$file\" | $SED -n 's/.*-> //p'\`
- while test -n \"\$file\"; do
- destdir=\`\$ECHO \"\$file\" | $SED 's%/[^/]*\$%%'\`
-
- # If there was a directory component, then change thisdir.
- if test \"x\$destdir\" != \"x\$file\"; then
- case \"\$destdir\" in
- [\\\\/]* | [A-Za-z]:[\\\\/]*) thisdir=\"\$destdir\" ;;
- *) thisdir=\"\$thisdir/\$destdir\" ;;
- esac
- fi
-
- file=\`\$ECHO \"\$file\" | $SED 's%^.*/%%'\`
- file=\`ls -ld \"\$thisdir/\$file\" | $SED -n 's/.*-> //p'\`
- done
-
- # Usually 'no', except on cygwin/mingw when embedded into
- # the cwrapper.
- WRAPPER_SCRIPT_BELONGS_IN_OBJDIR=$func_emit_wrapper_arg1
- if test \"\$WRAPPER_SCRIPT_BELONGS_IN_OBJDIR\" = \"yes\"; then
- # special case for '.'
- if test \"\$thisdir\" = \".\"; then
- thisdir=\`pwd\`
- fi
- # remove .libs from thisdir
- case \"\$thisdir\" in
- *[\\\\/]$objdir ) thisdir=\`\$ECHO \"\$thisdir\" | $SED 's%[\\\\/][^\\\\/]*$%%'\` ;;
- $objdir ) thisdir=. ;;
- esac
- fi
-
- # Try to get the absolute directory name.
- absdir=\`cd \"\$thisdir\" && pwd\`
- test -n \"\$absdir\" && thisdir=\"\$absdir\"
-"
-
- if test "$fast_install" = yes; then
- $ECHO "\
- program=lt-'$outputname'$exeext
- progdir=\"\$thisdir/$objdir\"
-
- if test ! -f \"\$progdir/\$program\" ||
- { file=\`ls -1dt \"\$progdir/\$program\" \"\$progdir/../\$program\" 2>/dev/null | ${SED} 1q\`; \\
- test \"X\$file\" != \"X\$progdir/\$program\"; }; then
-
- file=\"\$\$-\$program\"
-
- if test ! -d \"\$progdir\"; then
- $MKDIR \"\$progdir\"
- else
- $RM \"\$progdir/\$file\"
- fi"
-
- $ECHO "\
-
- # relink executable if necessary
- if test -n \"\$relink_command\"; then
- if relink_command_output=\`eval \$relink_command 2>&1\`; then :
- else
- $ECHO \"\$relink_command_output\" >&2
- $RM \"\$progdir/\$file\"
- exit 1
- fi
- fi
-
- $MV \"\$progdir/\$file\" \"\$progdir/\$program\" 2>/dev/null ||
- { $RM \"\$progdir/\$program\";
- $MV \"\$progdir/\$file\" \"\$progdir/\$program\"; }
- $RM \"\$progdir/\$file\"
- fi"
- else
- $ECHO "\
- program='$outputname'
- progdir=\"\$thisdir/$objdir\"
-"
- fi
-
- $ECHO "\
-
- if test -f \"\$progdir/\$program\"; then"
-
- # fixup the dll searchpath if we need to.
- #
- # Fix the DLL searchpath if we need to. Do this before prepending
- # to shlibpath, because on Windows, both are PATH and uninstalled
- # libraries must come first.
- if test -n "$dllsearchpath"; then
- $ECHO "\
- # Add the dll search path components to the executable PATH
- PATH=$dllsearchpath:\$PATH
-"
- fi
-
- # Export our shlibpath_var if we have one.
- if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
- $ECHO "\
- # Add our own library path to $shlibpath_var
- $shlibpath_var=\"$temp_rpath\$$shlibpath_var\"
-
- # Some systems cannot cope with colon-terminated $shlibpath_var
- # The second colon is a workaround for a bug in BeOS R4 sed
- $shlibpath_var=\`\$ECHO \"\$$shlibpath_var\" | $SED 's/::*\$//'\`
-
- export $shlibpath_var
-"
- fi
-
- $ECHO "\
- if test \"\$libtool_execute_magic\" != \"$magic\"; then
- # Run the actual program with our arguments.
- func_exec_program \${1+\"\$@\"}
- fi
- else
- # The program doesn't exist.
- \$ECHO \"\$0: error: \\\`\$progdir/\$program' does not exist\" 1>&2
- \$ECHO \"This script is just a wrapper for \$program.\" 1>&2
- \$ECHO \"See the $PACKAGE documentation for more information.\" 1>&2
- exit 1
- fi
-fi\
-"
-}
-
-
-# func_emit_cwrapperexe_src
-# emit the source code for a wrapper executable on stdout
-# Must ONLY be called from within func_mode_link because
-# it depends on a number of variable set therein.
-func_emit_cwrapperexe_src ()
-{
- cat <<EOF
-
-/* $cwrappersource - temporary wrapper executable for $objdir/$outputname
- Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
-
- The $output program cannot be directly executed until all the libtool
- libraries that it depends on are installed.
-
- This wrapper executable should never be moved out of the build directory.
- If it is, it will not operate correctly.
-*/
-EOF
- cat <<"EOF"
-#ifdef _MSC_VER
-# define _CRT_SECURE_NO_DEPRECATE 1
-#endif
-#include <stdio.h>
-#include <stdlib.h>
-#ifdef _MSC_VER
-# include <direct.h>
-# include <process.h>
-# include <io.h>
-#else
-# include <unistd.h>
-# include <stdint.h>
-# ifdef __CYGWIN__
-# include <io.h>
-# endif
-#endif
-#include <malloc.h>
-#include <stdarg.h>
-#include <assert.h>
-#include <string.h>
-#include <ctype.h>
-#include <errno.h>
-#include <fcntl.h>
-#include <sys/stat.h>
-
-/* declarations of non-ANSI functions */
-#if defined(__MINGW32__)
-# ifdef __STRICT_ANSI__
-int _putenv (const char *);
-# endif
-#elif defined(__CYGWIN__)
-# ifdef __STRICT_ANSI__
-char *realpath (const char *, char *);
-int putenv (char *);
-int setenv (const char *, const char *, int);
-# endif
-/* #elif defined (other platforms) ... */
-#endif
-
-/* portability defines, excluding path handling macros */
-#if defined(_MSC_VER)
-# define setmode _setmode
-# define stat _stat
-# define chmod _chmod
-# define getcwd _getcwd
-# define putenv _putenv
-# define S_IXUSR _S_IEXEC
-# ifndef _INTPTR_T_DEFINED
-# define _INTPTR_T_DEFINED
-# define intptr_t int
-# endif
-#elif defined(__MINGW32__)
-# define setmode _setmode
-# define stat _stat
-# define chmod _chmod
-# define getcwd _getcwd
-# define putenv _putenv
-#elif defined(__CYGWIN__)
-# define HAVE_SETENV
-# define FOPEN_WB "wb"
-/* #elif defined (other platforms) ... */
-#endif
-
-#if defined(PATH_MAX)
-# define LT_PATHMAX PATH_MAX
-#elif defined(MAXPATHLEN)
-# define LT_PATHMAX MAXPATHLEN
-#else
-# define LT_PATHMAX 1024
-#endif
-
-#ifndef S_IXOTH
-# define S_IXOTH 0
-#endif
-#ifndef S_IXGRP
-# define S_IXGRP 0
-#endif
-
-/* path handling portability macros */
-#ifndef DIR_SEPARATOR
-# define DIR_SEPARATOR '/'
-# define PATH_SEPARATOR ':'
-#endif
-
-#if defined (_WIN32) || defined (__MSDOS__) || defined (__DJGPP__) || \
- defined (__OS2__)
-# define HAVE_DOS_BASED_FILE_SYSTEM
-# define FOPEN_WB "wb"
-# ifndef DIR_SEPARATOR_2
-# define DIR_SEPARATOR_2 '\\'
-# endif
-# ifndef PATH_SEPARATOR_2
-# define PATH_SEPARATOR_2 ';'
-# endif
-#endif
-
-#ifndef DIR_SEPARATOR_2
-# define IS_DIR_SEPARATOR(ch) ((ch) == DIR_SEPARATOR)
-#else /* DIR_SEPARATOR_2 */
-# define IS_DIR_SEPARATOR(ch) \
- (((ch) == DIR_SEPARATOR) || ((ch) == DIR_SEPARATOR_2))
-#endif /* DIR_SEPARATOR_2 */
-
-#ifndef PATH_SEPARATOR_2
-# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR)
-#else /* PATH_SEPARATOR_2 */
-# define IS_PATH_SEPARATOR(ch) ((ch) == PATH_SEPARATOR_2)
-#endif /* PATH_SEPARATOR_2 */
-
-#ifndef FOPEN_WB
-# define FOPEN_WB "w"
-#endif
-#ifndef _O_BINARY
-# define _O_BINARY 0
-#endif
-
-#define XMALLOC(type, num) ((type *) xmalloc ((num) * sizeof(type)))
-#define XFREE(stale) do { \
- if (stale) { free ((void *) stale); stale = 0; } \
-} while (0)
-
-#if defined(LT_DEBUGWRAPPER)
-static int lt_debug = 1;
-#else
-static int lt_debug = 0;
-#endif
-
-const char *program_name = "libtool-wrapper"; /* in case xstrdup fails */
-
-void *xmalloc (size_t num);
-char *xstrdup (const char *string);
-const char *base_name (const char *name);
-char *find_executable (const char *wrapper);
-char *chase_symlinks (const char *pathspec);
-int make_executable (const char *path);
-int check_executable (const char *path);
-char *strendzap (char *str, const char *pat);
-void lt_debugprintf (const char *file, int line, const char *fmt, ...);
-void lt_fatal (const char *file, int line, const char *message, ...);
-static const char *nonnull (const char *s);
-static const char *nonempty (const char *s);
-void lt_setenv (const char *name, const char *value);
-char *lt_extend_str (const char *orig_value, const char *add, int to_end);
-void lt_update_exe_path (const char *name, const char *value);
-void lt_update_lib_path (const char *name, const char *value);
-char **prepare_spawn (char **argv);
-void lt_dump_script (FILE *f);
-EOF
-
- cat <<EOF
-volatile const char * MAGIC_EXE = "$magic_exe";
-const char * LIB_PATH_VARNAME = "$shlibpath_var";
-EOF
-
- if test "$shlibpath_overrides_runpath" = yes && test -n "$shlibpath_var" && test -n "$temp_rpath"; then
- func_to_host_path "$temp_rpath"
- cat <<EOF
-const char * LIB_PATH_VALUE = "$func_to_host_path_result";
-EOF
- else
- cat <<"EOF"
-const char * LIB_PATH_VALUE = "";
-EOF
- fi
-
- if test -n "$dllsearchpath"; then
- func_to_host_path "$dllsearchpath:"
- cat <<EOF
-const char * EXE_PATH_VARNAME = "PATH";
-const char * EXE_PATH_VALUE = "$func_to_host_path_result";
-EOF
- else
- cat <<"EOF"
-const char * EXE_PATH_VARNAME = "";
-const char * EXE_PATH_VALUE = "";
-EOF
- fi
-
- if test "$fast_install" = yes; then
- cat <<EOF
-const char * TARGET_PROGRAM_NAME = "lt-$outputname"; /* hopefully, no .exe */
-EOF
- else
- cat <<EOF
-const char * TARGET_PROGRAM_NAME = "$outputname"; /* hopefully, no .exe */
-EOF
- fi
-
-
- cat <<"EOF"
-
-#define LTWRAPPER_OPTION_PREFIX "--lt-"
-
-static const char *ltwrapper_option_prefix = LTWRAPPER_OPTION_PREFIX;
-static const char *dumpscript_opt = LTWRAPPER_OPTION_PREFIX "dump-script";
-static const char *debug_opt = LTWRAPPER_OPTION_PREFIX "debug";
-
-int
-main (int argc, char *argv[])
-{
- char **newargz;
- int newargc;
- char *tmp_pathspec;
- char *actual_cwrapper_path;
- char *actual_cwrapper_name;
- char *target_name;
- char *lt_argv_zero;
- intptr_t rval = 127;
-
- int i;
-
- program_name = (char *) xstrdup (base_name (argv[0]));
- newargz = XMALLOC (char *, argc + 1);
-
- /* very simple arg parsing; don't want to rely on getopt
- * also, copy all non cwrapper options to newargz, except
- * argz[0], which is handled differently
- */
- newargc=0;
- for (i = 1; i < argc; i++)
- {
- if (strcmp (argv[i], dumpscript_opt) == 0)
- {
-EOF
- case "$host" in
- *mingw* | *cygwin* )
- # make stdout use "unix" line endings
- echo " setmode(1,_O_BINARY);"
- ;;
- esac
-
- cat <<"EOF"
- lt_dump_script (stdout);
- return 0;
- }
- if (strcmp (argv[i], debug_opt) == 0)
- {
- lt_debug = 1;
- continue;
- }
- if (strcmp (argv[i], ltwrapper_option_prefix) == 0)
- {
- /* however, if there is an option in the LTWRAPPER_OPTION_PREFIX
- namespace, but it is not one of the ones we know about and
- have already dealt with, above (inluding dump-script), then
- report an error. Otherwise, targets might begin to believe
- they are allowed to use options in the LTWRAPPER_OPTION_PREFIX
- namespace. The first time any user complains about this, we'll
- need to make LTWRAPPER_OPTION_PREFIX a configure-time option
- or a configure.ac-settable value.
- */
- lt_fatal (__FILE__, __LINE__,
- "unrecognized %s option: '%s'",
- ltwrapper_option_prefix, argv[i]);
- }
- /* otherwise ... */
- newargz[++newargc] = xstrdup (argv[i]);
- }
- newargz[++newargc] = NULL;
-
-EOF
- cat <<EOF
- /* The GNU banner must be the first non-error debug message */
- lt_debugprintf (__FILE__, __LINE__, "libtool wrapper (GNU $PACKAGE$TIMESTAMP) $VERSION\n");
-EOF
- cat <<"EOF"
- lt_debugprintf (__FILE__, __LINE__, "(main) argv[0]: %s\n", argv[0]);
- lt_debugprintf (__FILE__, __LINE__, "(main) program_name: %s\n", program_name);
-
- tmp_pathspec = find_executable (argv[0]);
- if (tmp_pathspec == NULL)
- lt_fatal (__FILE__, __LINE__, "couldn't find %s", argv[0]);
- lt_debugprintf (__FILE__, __LINE__,
- "(main) found exe (before symlink chase) at: %s\n",
- tmp_pathspec);
-
- actual_cwrapper_path = chase_symlinks (tmp_pathspec);
- lt_debugprintf (__FILE__, __LINE__,
- "(main) found exe (after symlink chase) at: %s\n",
- actual_cwrapper_path);
- XFREE (tmp_pathspec);
-
- actual_cwrapper_name = xstrdup (base_name (actual_cwrapper_path));
- strendzap (actual_cwrapper_path, actual_cwrapper_name);
-
- /* wrapper name transforms */
- strendzap (actual_cwrapper_name, ".exe");
- tmp_pathspec = lt_extend_str (actual_cwrapper_name, ".exe", 1);
- XFREE (actual_cwrapper_name);
- actual_cwrapper_name = tmp_pathspec;
- tmp_pathspec = 0;
-
- /* target_name transforms -- use actual target program name; might have lt- prefix */
- target_name = xstrdup (base_name (TARGET_PROGRAM_NAME));
- strendzap (target_name, ".exe");
- tmp_pathspec = lt_extend_str (target_name, ".exe", 1);
- XFREE (target_name);
- target_name = tmp_pathspec;
- tmp_pathspec = 0;
-
- lt_debugprintf (__FILE__, __LINE__,
- "(main) libtool target name: %s\n",
- target_name);
-EOF
-
- cat <<EOF
- newargz[0] =
- XMALLOC (char, (strlen (actual_cwrapper_path) +
- strlen ("$objdir") + 1 + strlen (actual_cwrapper_name) + 1));
- strcpy (newargz[0], actual_cwrapper_path);
- strcat (newargz[0], "$objdir");
- strcat (newargz[0], "/");
-EOF
-
- cat <<"EOF"
- /* stop here, and copy so we don't have to do this twice */
- tmp_pathspec = xstrdup (newargz[0]);
-
- /* do NOT want the lt- prefix here, so use actual_cwrapper_name */
- strcat (newargz[0], actual_cwrapper_name);
-
- /* DO want the lt- prefix here if it exists, so use target_name */
- lt_argv_zero = lt_extend_str (tmp_pathspec, target_name, 1);
- XFREE (tmp_pathspec);
- tmp_pathspec = NULL;
-EOF
-
- case $host_os in
- mingw*)
- cat <<"EOF"
- {
- char* p;
- while ((p = strchr (newargz[0], '\\')) != NULL)
- {
- *p = '/';
- }
- while ((p = strchr (lt_argv_zero, '\\')) != NULL)
- {
- *p = '/';
- }
- }
-EOF
- ;;
- esac
-
- cat <<"EOF"
- XFREE (target_name);
- XFREE (actual_cwrapper_path);
- XFREE (actual_cwrapper_name);
-
- lt_setenv ("BIN_SH", "xpg4"); /* for Tru64 */
- lt_setenv ("DUALCASE", "1"); /* for MSK sh */
- /* Update the DLL searchpath. EXE_PATH_VALUE ($dllsearchpath) must
- be prepended before (that is, appear after) LIB_PATH_VALUE ($temp_rpath)
- because on Windows, both *_VARNAMEs are PATH but uninstalled
- libraries must come first. */
- lt_update_exe_path (EXE_PATH_VARNAME, EXE_PATH_VALUE);
- lt_update_lib_path (LIB_PATH_VARNAME, LIB_PATH_VALUE);
-
- lt_debugprintf (__FILE__, __LINE__, "(main) lt_argv_zero: %s\n",
- nonnull (lt_argv_zero));
- for (i = 0; i < newargc; i++)
- {
- lt_debugprintf (__FILE__, __LINE__, "(main) newargz[%d]: %s\n",
- i, nonnull (newargz[i]));
- }
-
-EOF
-
- case $host_os in
- mingw*)
- cat <<"EOF"
- /* execv doesn't actually work on mingw as expected on unix */
- newargz = prepare_spawn (newargz);
- rval = _spawnv (_P_WAIT, lt_argv_zero, (const char * const *) newargz);
- if (rval == -1)
- {
- /* failed to start process */
- lt_debugprintf (__FILE__, __LINE__,
- "(main) failed to launch target \"%s\": %s\n",
- lt_argv_zero, nonnull (strerror (errno)));
- return 127;
- }
- return rval;
-EOF
- ;;
- *)
- cat <<"EOF"
- execv (lt_argv_zero, newargz);
- return rval; /* =127, but avoids unused variable warning */
-EOF
- ;;
- esac
-
- cat <<"EOF"
-}
-
-void *
-xmalloc (size_t num)
-{
- void *p = (void *) malloc (num);
- if (!p)
- lt_fatal (__FILE__, __LINE__, "memory exhausted");
-
- return p;
-}
-
-char *
-xstrdup (const char *string)
-{
- return string ? strcpy ((char *) xmalloc (strlen (string) + 1),
- string) : NULL;
-}
-
-const char *
-base_name (const char *name)
-{
- const char *base;
-
-#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
- /* Skip over the disk name in MSDOS pathnames. */
- if (isalpha ((unsigned char) name[0]) && name[1] == ':')
- name += 2;
-#endif
-
- for (base = name; *name; name++)
- if (IS_DIR_SEPARATOR (*name))
- base = name + 1;
- return base;
-}
-
-int
-check_executable (const char *path)
-{
- struct stat st;
-
- lt_debugprintf (__FILE__, __LINE__, "(check_executable): %s\n",
- nonempty (path));
- if ((!path) || (!*path))
- return 0;
-
- if ((stat (path, &st) >= 0)
- && (st.st_mode & (S_IXUSR | S_IXGRP | S_IXOTH)))
- return 1;
- else
- return 0;
-}
-
-int
-make_executable (const char *path)
-{
- int rval = 0;
- struct stat st;
-
- lt_debugprintf (__FILE__, __LINE__, "(make_executable): %s\n",
- nonempty (path));
- if ((!path) || (!*path))
- return 0;
-
- if (stat (path, &st) >= 0)
- {
- rval = chmod (path, st.st_mode | S_IXOTH | S_IXGRP | S_IXUSR);
- }
- return rval;
-}
-
-/* Searches for the full path of the wrapper. Returns
- newly allocated full path name if found, NULL otherwise
- Does not chase symlinks, even on platforms that support them.
-*/
-char *
-find_executable (const char *wrapper)
-{
- int has_slash = 0;
- const char *p;
- const char *p_next;
- /* static buffer for getcwd */
- char tmp[LT_PATHMAX + 1];
- int tmp_len;
- char *concat_name;
-
- lt_debugprintf (__FILE__, __LINE__, "(find_executable): %s\n",
- nonempty (wrapper));
-
- if ((wrapper == NULL) || (*wrapper == '\0'))
- return NULL;
-
- /* Absolute path? */
-#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
- if (isalpha ((unsigned char) wrapper[0]) && wrapper[1] == ':')
- {
- concat_name = xstrdup (wrapper);
- if (check_executable (concat_name))
- return concat_name;
- XFREE (concat_name);
- }
- else
- {
-#endif
- if (IS_DIR_SEPARATOR (wrapper[0]))
- {
- concat_name = xstrdup (wrapper);
- if (check_executable (concat_name))
- return concat_name;
- XFREE (concat_name);
- }
-#if defined (HAVE_DOS_BASED_FILE_SYSTEM)
- }
-#endif
-
- for (p = wrapper; *p; p++)
- if (*p == '/')
- {
- has_slash = 1;
- break;
- }
- if (!has_slash)
- {
- /* no slashes; search PATH */
- const char *path = getenv ("PATH");
- if (path != NULL)
- {
- for (p = path; *p; p = p_next)
- {
- const char *q;
- size_t p_len;
- for (q = p; *q; q++)
- if (IS_PATH_SEPARATOR (*q))
- break;
- p_len = q - p;
- p_next = (*q == '\0' ? q : q + 1);
- if (p_len == 0)
- {
- /* empty path: current directory */
- if (getcwd (tmp, LT_PATHMAX) == NULL)
- lt_fatal (__FILE__, __LINE__, "getcwd failed: %s",
- nonnull (strerror (errno)));
- tmp_len = strlen (tmp);
- concat_name =
- XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
- memcpy (concat_name, tmp, tmp_len);
- concat_name[tmp_len] = '/';
- strcpy (concat_name + tmp_len + 1, wrapper);
- }
- else
- {
- concat_name =
- XMALLOC (char, p_len + 1 + strlen (wrapper) + 1);
- memcpy (concat_name, p, p_len);
- concat_name[p_len] = '/';
- strcpy (concat_name + p_len + 1, wrapper);
- }
- if (check_executable (concat_name))
- return concat_name;
- XFREE (concat_name);
- }
- }
- /* not found in PATH; assume curdir */
- }
- /* Relative path | not found in path: prepend cwd */
- if (getcwd (tmp, LT_PATHMAX) == NULL)
- lt_fatal (__FILE__, __LINE__, "getcwd failed: %s",
- nonnull (strerror (errno)));
- tmp_len = strlen (tmp);
- concat_name = XMALLOC (char, tmp_len + 1 + strlen (wrapper) + 1);
- memcpy (concat_name, tmp, tmp_len);
- concat_name[tmp_len] = '/';
- strcpy (concat_name + tmp_len + 1, wrapper);
-
- if (check_executable (concat_name))
- return concat_name;
- XFREE (concat_name);
- return NULL;
-}
-
-char *
-chase_symlinks (const char *pathspec)
-{
-#ifndef S_ISLNK
- return xstrdup (pathspec);
-#else
- char buf[LT_PATHMAX];
- struct stat s;
- char *tmp_pathspec = xstrdup (pathspec);
- char *p;
- int has_symlinks = 0;
- while (strlen (tmp_pathspec) && !has_symlinks)
- {
- lt_debugprintf (__FILE__, __LINE__,
- "checking path component for symlinks: %s\n",
- tmp_pathspec);
- if (lstat (tmp_pathspec, &s) == 0)
- {
- if (S_ISLNK (s.st_mode) != 0)
- {
- has_symlinks = 1;
- break;
- }
-
- /* search backwards for last DIR_SEPARATOR */
- p = tmp_pathspec + strlen (tmp_pathspec) - 1;
- while ((p > tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
- p--;
- if ((p == tmp_pathspec) && (!IS_DIR_SEPARATOR (*p)))
- {
- /* no more DIR_SEPARATORS left */
- break;
- }
- *p = '\0';
- }
- else
- {
- lt_fatal (__FILE__, __LINE__,
- "error accessing file \"%s\": %s",
- tmp_pathspec, nonnull (strerror (errno)));
- }
- }
- XFREE (tmp_pathspec);
-
- if (!has_symlinks)
- {
- return xstrdup (pathspec);
- }
-
- tmp_pathspec = realpath (pathspec, buf);
- if (tmp_pathspec == 0)
- {
- lt_fatal (__FILE__, __LINE__,
- "could not follow symlinks for %s", pathspec);
- }
- return xstrdup (tmp_pathspec);
-#endif
-}
-
-char *
-strendzap (char *str, const char *pat)
-{
- size_t len, patlen;
-
- assert (str != NULL);
- assert (pat != NULL);
-
- len = strlen (str);
- patlen = strlen (pat);
-
- if (patlen <= len)
- {
- str += len - patlen;
- if (strcmp (str, pat) == 0)
- *str = '\0';
- }
- return str;
-}
-
-void
-lt_debugprintf (const char *file, int line, const char *fmt, ...)
-{
- va_list args;
- if (lt_debug)
- {
- (void) fprintf (stderr, "%s:%s:%d: ", program_name, file, line);
- va_start (args, fmt);
- (void) vfprintf (stderr, fmt, args);
- va_end (args);
- }
-}
-
-static void
-lt_error_core (int exit_status, const char *file,
- int line, const char *mode,
- const char *message, va_list ap)
-{
- fprintf (stderr, "%s:%s:%d: %s: ", program_name, file, line, mode);
- vfprintf (stderr, message, ap);
- fprintf (stderr, ".\n");
-
- if (exit_status >= 0)
- exit (exit_status);
-}
-
-void
-lt_fatal (const char *file, int line, const char *message, ...)
-{
- va_list ap;
- va_start (ap, message);
- lt_error_core (EXIT_FAILURE, file, line, "FATAL", message, ap);
- va_end (ap);
-}
-
-static const char *
-nonnull (const char *s)
-{
- return s ? s : "(null)";
-}
-
-static const char *
-nonempty (const char *s)
-{
- return (s && !*s) ? "(empty)" : nonnull (s);
-}
-
-void
-lt_setenv (const char *name, const char *value)
-{
- lt_debugprintf (__FILE__, __LINE__,
- "(lt_setenv) setting '%s' to '%s'\n",
- nonnull (name), nonnull (value));
- {
-#ifdef HAVE_SETENV
- /* always make a copy, for consistency with !HAVE_SETENV */
- char *str = xstrdup (value);
- setenv (name, str, 1);
-#else
- int len = strlen (name) + 1 + strlen (value) + 1;
- char *str = XMALLOC (char, len);
- sprintf (str, "%s=%s", name, value);
- if (putenv (str) != EXIT_SUCCESS)
- {
- XFREE (str);
- }
-#endif
- }
-}
-
-char *
-lt_extend_str (const char *orig_value, const char *add, int to_end)
-{
- char *new_value;
- if (orig_value && *orig_value)
- {
- int orig_value_len = strlen (orig_value);
- int add_len = strlen (add);
- new_value = XMALLOC (char, add_len + orig_value_len + 1);
- if (to_end)
- {
- strcpy (new_value, orig_value);
- strcpy (new_value + orig_value_len, add);
- }
- else
- {
- strcpy (new_value, add);
- strcpy (new_value + add_len, orig_value);
- }
- }
- else
- {
- new_value = xstrdup (add);
- }
- return new_value;
-}
-
-void
-lt_update_exe_path (const char *name, const char *value)
-{
- lt_debugprintf (__FILE__, __LINE__,
- "(lt_update_exe_path) modifying '%s' by prepending '%s'\n",
- nonnull (name), nonnull (value));
-
- if (name && *name && value && *value)
- {
- char *new_value = lt_extend_str (getenv (name), value, 0);
- /* some systems can't cope with a ':'-terminated path #' */
- int len = strlen (new_value);
- while (((len = strlen (new_value)) > 0) && IS_PATH_SEPARATOR (new_value[len-1]))
- {
- new_value[len-1] = '\0';
- }
- lt_setenv (name, new_value);
- XFREE (new_value);
- }
-}
-
-void
-lt_update_lib_path (const char *name, const char *value)
-{
- lt_debugprintf (__FILE__, __LINE__,
- "(lt_update_lib_path) modifying '%s' by prepending '%s'\n",
- nonnull (name), nonnull (value));
-
- if (name && *name && value && *value)
- {
- char *new_value = lt_extend_str (getenv (name), value, 0);
- lt_setenv (name, new_value);
- XFREE (new_value);
- }
-}
-
-EOF
- case $host_os in
- mingw*)
- cat <<"EOF"
-
-/* Prepares an argument vector before calling spawn().
- Note that spawn() does not by itself call the command interpreter
- (getenv ("COMSPEC") != NULL ? getenv ("COMSPEC") :
- ({ OSVERSIONINFO v; v.dwOSVersionInfoSize = sizeof(OSVERSIONINFO);
- GetVersionEx(&v);
- v.dwPlatformId == VER_PLATFORM_WIN32_NT;
- }) ? "cmd.exe" : "command.com").
- Instead it simply concatenates the arguments, separated by ' ', and calls
- CreateProcess(). We must quote the arguments since Win32 CreateProcess()
- interprets characters like ' ', '\t', '\\', '"' (but not '<' and '>') in a
- special way:
- - Space and tab are interpreted as delimiters. They are not treated as
- delimiters if they are surrounded by double quotes: "...".
- - Unescaped double quotes are removed from the input. Their only effect is
- that within double quotes, space and tab are treated like normal
- characters.
- - Backslashes not followed by double quotes are not special.
- - But 2*n+1 backslashes followed by a double quote become
- n backslashes followed by a double quote (n >= 0):
- \" -> "
- \\\" -> \"
- \\\\\" -> \\"
- */
-#define SHELL_SPECIAL_CHARS "\"\\ \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
-#define SHELL_SPACE_CHARS " \001\002\003\004\005\006\007\010\011\012\013\014\015\016\017\020\021\022\023\024\025\026\027\030\031\032\033\034\035\036\037"
-char **
-prepare_spawn (char **argv)
-{
- size_t argc;
- char **new_argv;
- size_t i;
-
- /* Count number of arguments. */
- for (argc = 0; argv[argc] != NULL; argc++)
- ;
-
- /* Allocate new argument vector. */
- new_argv = XMALLOC (char *, argc + 1);
-
- /* Put quoted arguments into the new argument vector. */
- for (i = 0; i < argc; i++)
- {
- const char *string = argv[i];
-
- if (string[0] == '\0')
- new_argv[i] = xstrdup ("\"\"");
- else if (strpbrk (string, SHELL_SPECIAL_CHARS) != NULL)
- {
- int quote_around = (strpbrk (string, SHELL_SPACE_CHARS) != NULL);
- size_t length;
- unsigned int backslashes;
- const char *s;
- char *quoted_string;
- char *p;
-
- length = 0;
- backslashes = 0;
- if (quote_around)
- length++;
- for (s = string; *s != '\0'; s++)
- {
- char c = *s;
- if (c == '"')
- length += backslashes + 1;
- length++;
- if (c == '\\')
- backslashes++;
- else
- backslashes = 0;
- }
- if (quote_around)
- length += backslashes + 1;
-
- quoted_string = XMALLOC (char, length + 1);
-
- p = quoted_string;
- backslashes = 0;
- if (quote_around)
- *p++ = '"';
- for (s = string; *s != '\0'; s++)
- {
- char c = *s;
- if (c == '"')
- {
- unsigned int j;
- for (j = backslashes + 1; j > 0; j--)
- *p++ = '\\';
- }
- *p++ = c;
- if (c == '\\')
- backslashes++;
- else
- backslashes = 0;
- }
- if (quote_around)
- {
- unsigned int j;
- for (j = backslashes; j > 0; j--)
- *p++ = '\\';
- *p++ = '"';
- }
- *p = '\0';
-
- new_argv[i] = quoted_string;
- }
- else
- new_argv[i] = (char *) string;
- }
- new_argv[argc] = NULL;
-
- return new_argv;
-}
-EOF
- ;;
- esac
-
- cat <<"EOF"
-void lt_dump_script (FILE* f)
-{
-EOF
- func_emit_wrapper yes |
- $SED -n -e '
-s/^\(.\{79\}\)\(..*\)/\1\
-\2/
-h
-s/\([\\"]\)/\\\1/g
-s/$/\\n/
-s/\([^\n]*\).*/ fputs ("\1", f);/p
-g
-D'
- cat <<"EOF"
-}
-EOF
-}
-# end: func_emit_cwrapperexe_src
-
-# func_win32_import_lib_p ARG
-# True if ARG is an import lib, as indicated by $file_magic_cmd
-func_win32_import_lib_p ()
-{
- $opt_debug
- case `eval $file_magic_cmd \"\$1\" 2>/dev/null | $SED -e 10q` in
- *import*) : ;;
- *) false ;;
- esac
-}
-
-# func_mode_link arg...
-func_mode_link ()
-{
- $opt_debug
- case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
- # It is impossible to link a dll without this setting, and
- # we shouldn't force the makefile maintainer to figure out
- # which system we are compiling for in order to pass an extra
- # flag for every libtool invocation.
- # allow_undefined=no
-
- # FIXME: Unfortunately, there are problems with the above when trying
- # to make a dll which has undefined symbols, in which case not
- # even a static library is built. For now, we need to specify
- # -no-undefined on the libtool link line when we can be certain
- # that all symbols are satisfied, otherwise we get a static library.
- allow_undefined=yes
- ;;
- *)
- allow_undefined=yes
- ;;
- esac
- libtool_args=$nonopt
- base_compile="$nonopt $@"
- compile_command=$nonopt
- finalize_command=$nonopt
-
- compile_rpath=
- finalize_rpath=
- compile_shlibpath=
- finalize_shlibpath=
- convenience=
- old_convenience=
- deplibs=
- old_deplibs=
- compiler_flags=
- linker_flags=
- dllsearchpath=
- lib_search_path=`pwd`
- inst_prefix_dir=
- new_inherited_linker_flags=
-
- avoid_version=no
- bindir=
- dlfiles=
- dlprefiles=
- dlself=no
- export_dynamic=no
- export_symbols=
- export_symbols_regex=
- generated=
- libobjs=
- ltlibs=
- module=no
- no_install=no
- objs=
- non_pic_objects=
- precious_files_regex=
- prefer_static_libs=no
- preload=no
- prev=
- prevarg=
- release=
- rpath=
- xrpath=
- perm_rpath=
- temp_rpath=
- thread_safe=no
- vinfo=
- vinfo_number=no
- weak_libs=
- single_module="${wl}-single_module"
- func_infer_tag $base_compile
-
- # We need to know -static, to get the right output filenames.
- for arg
- do
- case $arg in
- -shared)
- test "$build_libtool_libs" != yes && \
- func_fatal_configuration "can not build a shared library"
- build_old_libs=no
- break
- ;;
- -all-static | -static | -static-libtool-libs)
- case $arg in
- -all-static)
- if test "$build_libtool_libs" = yes && test -z "$link_static_flag"; then
- func_warning "complete static linking is impossible in this configuration"
- fi
- if test -n "$link_static_flag"; then
- dlopen_self=$dlopen_self_static
- fi
- prefer_static_libs=yes
- ;;
- -static)
- if test -z "$pic_flag" && test -n "$link_static_flag"; then
- dlopen_self=$dlopen_self_static
- fi
- prefer_static_libs=built
- ;;
- -static-libtool-libs)
- if test -z "$pic_flag" && test -n "$link_static_flag"; then
- dlopen_self=$dlopen_self_static
- fi
- prefer_static_libs=yes
- ;;
- esac
- build_libtool_libs=no
- build_old_libs=yes
- break
- ;;
- esac
- done
-
- # See if our shared archives depend on static archives.
- test -n "$old_archive_from_new_cmds" && build_old_libs=yes
-
- # Go through the arguments, transforming them on the way.
- while test "$#" -gt 0; do
- arg="$1"
- shift
- func_quote_for_eval "$arg"
- qarg=$func_quote_for_eval_unquoted_result
- func_append libtool_args " $func_quote_for_eval_result"
-
- # If the previous option needs an argument, assign it.
- if test -n "$prev"; then
- case $prev in
- output)
- func_append compile_command " @OUTPUT@"
- func_append finalize_command " @OUTPUT@"
- ;;
- esac
-
- case $prev in
- bindir)
- bindir="$arg"
- prev=
- continue
- ;;
- dlfiles|dlprefiles)
- if test "$preload" = no; then
- # Add the symbol object into the linking commands.
- func_append compile_command " @SYMFILE@"
- func_append finalize_command " @SYMFILE@"
- preload=yes
- fi
- case $arg in
- *.la | *.lo) ;; # We handle these cases below.
- force)
- if test "$dlself" = no; then
- dlself=needless
- export_dynamic=yes
- fi
- prev=
- continue
- ;;
- self)
- if test "$prev" = dlprefiles; then
- dlself=yes
- elif test "$prev" = dlfiles && test "$dlopen_self" != yes; then
- dlself=yes
- else
- dlself=needless
- export_dynamic=yes
- fi
- prev=
- continue
- ;;
- *)
- if test "$prev" = dlfiles; then
- func_append dlfiles " $arg"
- else
- func_append dlprefiles " $arg"
- fi
- prev=
- continue
- ;;
- esac
- ;;
- expsyms)
- export_symbols="$arg"
- test -f "$arg" \
- || func_fatal_error "symbol file \`$arg' does not exist"
- prev=
- continue
- ;;
- expsyms_regex)
- export_symbols_regex="$arg"
- prev=
- continue
- ;;
- framework)
- case $host in
- *-*-darwin*)
- case "$deplibs " in
- *" $qarg.ltframework "*) ;;
- *) func_append deplibs " $qarg.ltframework" # this is fixed later
- ;;
- esac
- ;;
- esac
- prev=
- continue
- ;;
- inst_prefix)
- inst_prefix_dir="$arg"
- prev=
- continue
- ;;
- objectlist)
- if test -f "$arg"; then
- save_arg=$arg
- moreargs=
- for fil in `cat "$save_arg"`
- do
-# func_append moreargs " $fil"
- arg=$fil
- # A libtool-controlled object.
-
- # Check to see that this really is a libtool object.
- if func_lalib_unsafe_p "$arg"; then
- pic_object=
- non_pic_object=
-
- # Read the .lo file
- func_source "$arg"
-
- if test -z "$pic_object" ||
- test -z "$non_pic_object" ||
- test "$pic_object" = none &&
- test "$non_pic_object" = none; then
- func_fatal_error "cannot find name of object for \`$arg'"
- fi
-
- # Extract subdirectory from the argument.
- func_dirname "$arg" "/" ""
- xdir="$func_dirname_result"
-
- if test "$pic_object" != none; then
- # Prepend the subdirectory the object is found in.
- pic_object="$xdir$pic_object"
-
- if test "$prev" = dlfiles; then
- if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
- func_append dlfiles " $pic_object"
- prev=
- continue
- else
- # If libtool objects are unsupported, then we need to preload.
- prev=dlprefiles
- fi
- fi
-
- # CHECK ME: I think I busted this. -Ossama
- if test "$prev" = dlprefiles; then
- # Preload the old-style object.
- func_append dlprefiles " $pic_object"
- prev=
- fi
-
- # A PIC object.
- func_append libobjs " $pic_object"
- arg="$pic_object"
- fi
-
- # Non-PIC object.
- if test "$non_pic_object" != none; then
- # Prepend the subdirectory the object is found in.
- non_pic_object="$xdir$non_pic_object"
-
- # A standard non-PIC object
- func_append non_pic_objects " $non_pic_object"
- if test -z "$pic_object" || test "$pic_object" = none ; then
- arg="$non_pic_object"
- fi
- else
- # If the PIC object exists, use it instead.
- # $xdir was prepended to $pic_object above.
- non_pic_object="$pic_object"
- func_append non_pic_objects " $non_pic_object"
- fi
- else
- # Only an error if not doing a dry-run.
- if $opt_dry_run; then
- # Extract subdirectory from the argument.
- func_dirname "$arg" "/" ""
- xdir="$func_dirname_result"
-
- func_lo2o "$arg"
- pic_object=$xdir$objdir/$func_lo2o_result
- non_pic_object=$xdir$func_lo2o_result
- func_append libobjs " $pic_object"
- func_append non_pic_objects " $non_pic_object"
- else
- func_fatal_error "\`$arg' is not a valid libtool object"
- fi
- fi
- done
- else
- func_fatal_error "link input file \`$arg' does not exist"
- fi
- arg=$save_arg
- prev=
- continue
- ;;
- precious_regex)
- precious_files_regex="$arg"
- prev=
- continue
- ;;
- release)
- release="-$arg"
- prev=
- continue
- ;;
- rpath | xrpath)
- # We need an absolute path.
- case $arg in
- [\\/]* | [A-Za-z]:[\\/]*) ;;
- *)
- func_fatal_error "only absolute run-paths are allowed"
- ;;
- esac
- if test "$prev" = rpath; then
- case "$rpath " in
- *" $arg "*) ;;
- *) func_append rpath " $arg" ;;
- esac
- else
- case "$xrpath " in
- *" $arg "*) ;;
- *) func_append xrpath " $arg" ;;
- esac
- fi
- prev=
- continue
- ;;
- shrext)
- shrext_cmds="$arg"
- prev=
- continue
- ;;
- weak)
- func_append weak_libs " $arg"
- prev=
- continue
- ;;
- xcclinker)
- func_append linker_flags " $qarg"
- func_append compiler_flags " $qarg"
- prev=
- func_append compile_command " $qarg"
- func_append finalize_command " $qarg"
- continue
- ;;
- xcompiler)
- func_append compiler_flags " $qarg"
- prev=
- func_append compile_command " $qarg"
- func_append finalize_command " $qarg"
- continue
- ;;
- xlinker)
- func_append linker_flags " $qarg"
- func_append compiler_flags " $wl$qarg"
- prev=
- func_append compile_command " $wl$qarg"
- func_append finalize_command " $wl$qarg"
- continue
- ;;
- *)
- eval "$prev=\"\$arg\""
- prev=
- continue
- ;;
- esac
- fi # test -n "$prev"
-
- prevarg="$arg"
-
- case $arg in
- -all-static)
- if test -n "$link_static_flag"; then
- # See comment for -static flag below, for more details.
- func_append compile_command " $link_static_flag"
- func_append finalize_command " $link_static_flag"
- fi
- continue
- ;;
-
- -allow-undefined)
- # FIXME: remove this flag sometime in the future.
- func_fatal_error "\`-allow-undefined' must not be used because it is the default"
- ;;
-
- -avoid-version)
- avoid_version=yes
- continue
- ;;
-
- -bindir)
- prev=bindir
- continue
- ;;
-
- -dlopen)
- prev=dlfiles
- continue
- ;;
-
- -dlpreopen)
- prev=dlprefiles
- continue
- ;;
-
- -export-dynamic)
- export_dynamic=yes
- continue
- ;;
-
- -export-symbols | -export-symbols-regex)
- if test -n "$export_symbols" || test -n "$export_symbols_regex"; then
- func_fatal_error "more than one -exported-symbols argument is not allowed"
- fi
- if test "X$arg" = "X-export-symbols"; then
- prev=expsyms
- else
- prev=expsyms_regex
- fi
- continue
- ;;
-
- -framework)
- prev=framework
- continue
- ;;
-
- -inst-prefix-dir)
- prev=inst_prefix
- continue
- ;;
-
- # The native IRIX linker understands -LANG:*, -LIST:* and -LNO:*
- # so, if we see these flags be careful not to treat them like -L
- -L[A-Z][A-Z]*:*)
- case $with_gcc/$host in
- no/*-*-irix* | /*-*-irix*)
- func_append compile_command " $arg"
- func_append finalize_command " $arg"
- ;;
- esac
- continue
- ;;
-
- -L*)
- func_stripname "-L" '' "$arg"
- if test -z "$func_stripname_result"; then
- if test "$#" -gt 0; then
- func_fatal_error "require no space between \`-L' and \`$1'"
- else
- func_fatal_error "need path for \`-L' option"
- fi
- fi
- func_resolve_sysroot "$func_stripname_result"
- dir=$func_resolve_sysroot_result
- # We need an absolute path.
- case $dir in
- [\\/]* | [A-Za-z]:[\\/]*) ;;
- *)
- absdir=`cd "$dir" && pwd`
- test -z "$absdir" && \
- func_fatal_error "cannot determine absolute directory name of \`$dir'"
- dir="$absdir"
- ;;
- esac
- case "$deplibs " in
- *" -L$dir "* | *" $arg "*)
- # Will only happen for absolute or sysroot arguments
- ;;
- *)
- # Preserve sysroot, but never include relative directories
- case $dir in
- [\\/]* | [A-Za-z]:[\\/]* | =*) func_append deplibs " $arg" ;;
- *) func_append deplibs " -L$dir" ;;
- esac
- func_append lib_search_path " $dir"
- ;;
- esac
- case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
- testbindir=`$ECHO "$dir" | $SED 's*/lib$*/bin*'`
- case :$dllsearchpath: in
- *":$dir:"*) ;;
- ::) dllsearchpath=$dir;;
- *) func_append dllsearchpath ":$dir";;
- esac
- case :$dllsearchpath: in
- *":$testbindir:"*) ;;
- ::) dllsearchpath=$testbindir;;
- *) func_append dllsearchpath ":$testbindir";;
- esac
- ;;
- esac
- continue
- ;;
-
- -l*)
- if test "X$arg" = "X-lc" || test "X$arg" = "X-lm"; then
- case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-beos* | *-cegcc* | *-*-haiku*)
- # These systems don't actually have a C or math library (as such)
- continue
- ;;
- *-*-os2*)
- # These systems don't actually have a C library (as such)
- test "X$arg" = "X-lc" && continue
- ;;
- *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
- # Do not include libc due to us having libc/libc_r.
- test "X$arg" = "X-lc" && continue
- ;;
- *-*-rhapsody* | *-*-darwin1.[012])
- # Rhapsody C and math libraries are in the System framework
- func_append deplibs " System.ltframework"
- continue
- ;;
- *-*-sco3.2v5* | *-*-sco5v6*)
- # Causes problems with __ctype
- test "X$arg" = "X-lc" && continue
- ;;
- *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
- # Compiler inserts libc in the correct place for threads to work
- test "X$arg" = "X-lc" && continue
- ;;
- esac
- elif test "X$arg" = "X-lc_r"; then
- case $host in
- *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
- # Do not include libc_r directly, use -pthread flag.
- continue
- ;;
- esac
- fi
- func_append deplibs " $arg"
- continue
- ;;
-
- -module)
- module=yes
- continue
- ;;
-
- # Tru64 UNIX uses -model [arg] to determine the layout of C++
- # classes, name mangling, and exception handling.
- # Darwin uses the -arch flag to determine output architecture.
- -model|-arch|-isysroot|--sysroot)
- func_append compiler_flags " $arg"
- func_append compile_command " $arg"
- func_append finalize_command " $arg"
- prev=xcompiler
- continue
- ;;
-
- -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
- |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
- func_append compiler_flags " $arg"
- func_append compile_command " $arg"
- func_append finalize_command " $arg"
- case "$new_inherited_linker_flags " in
- *" $arg "*) ;;
- * ) func_append new_inherited_linker_flags " $arg" ;;
- esac
- continue
- ;;
-
- -multi_module)
- single_module="${wl}-multi_module"
- continue
- ;;
-
- -no-fast-install)
- fast_install=no
- continue
- ;;
-
- -no-install)
- case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-darwin* | *-cegcc*)
- # The PATH hackery in wrapper scripts is required on Windows
- # and Darwin in order for the loader to find any dlls it needs.
- func_warning "\`-no-install' is ignored for $host"
- func_warning "assuming \`-no-fast-install' instead"
- fast_install=no
- ;;
- *) no_install=yes ;;
- esac
- continue
- ;;
-
- -no-undefined)
- allow_undefined=no
- continue
- ;;
-
- -objectlist)
- prev=objectlist
- continue
- ;;
-
- -o) prev=output ;;
-
- -precious-files-regex)
- prev=precious_regex
- continue
- ;;
-
- -release)
- prev=release
- continue
- ;;
-
- -rpath)
- prev=rpath
- continue
- ;;
-
- -R)
- prev=xrpath
- continue
- ;;
-
- -R*)
- func_stripname '-R' '' "$arg"
- dir=$func_stripname_result
- # We need an absolute path.
- case $dir in
- [\\/]* | [A-Za-z]:[\\/]*) ;;
- =*)
- func_stripname '=' '' "$dir"
- dir=$lt_sysroot$func_stripname_result
- ;;
- *)
- func_fatal_error "only absolute run-paths are allowed"
- ;;
- esac
- case "$xrpath " in
- *" $dir "*) ;;
- *) func_append xrpath " $dir" ;;
- esac
- continue
- ;;
-
- -shared)
- # The effects of -shared are defined in a previous loop.
- continue
- ;;
-
- -shrext)
- prev=shrext
- continue
- ;;
-
- -static | -static-libtool-libs)
- # The effects of -static are defined in a previous loop.
- # We used to do the same as -all-static on platforms that
- # didn't have a PIC flag, but the assumption that the effects
- # would be equivalent was wrong. It would break on at least
- # Digital Unix and AIX.
- continue
- ;;
-
- -thread-safe)
- thread_safe=yes
- continue
- ;;
-
- -version-info)
- prev=vinfo
- continue
- ;;
-
- -version-number)
- prev=vinfo
- vinfo_number=yes
- continue
- ;;
-
- -weak)
- prev=weak
- continue
- ;;
-
- -Wc,*)
- func_stripname '-Wc,' '' "$arg"
- args=$func_stripname_result
- arg=
- save_ifs="$IFS"; IFS=','
- for flag in $args; do
- IFS="$save_ifs"
- func_quote_for_eval "$flag"
- func_append arg " $func_quote_for_eval_result"
- func_append compiler_flags " $func_quote_for_eval_result"
- done
- IFS="$save_ifs"
- func_stripname ' ' '' "$arg"
- arg=$func_stripname_result
- ;;
-
- -Wl,*)
- func_stripname '-Wl,' '' "$arg"
- args=$func_stripname_result
- arg=
- save_ifs="$IFS"; IFS=','
- for flag in $args; do
- IFS="$save_ifs"
- func_quote_for_eval "$flag"
- func_append arg " $wl$func_quote_for_eval_result"
- func_append compiler_flags " $wl$func_quote_for_eval_result"
- func_append linker_flags " $func_quote_for_eval_result"
- done
- IFS="$save_ifs"
- func_stripname ' ' '' "$arg"
- arg=$func_stripname_result
- ;;
-
- -Xcompiler)
- prev=xcompiler
- continue
- ;;
-
- -Xlinker)
- prev=xlinker
- continue
- ;;
-
- -XCClinker)
- prev=xcclinker
- continue
- ;;
-
- # -msg_* for osf cc
- -msg_*)
- func_quote_for_eval "$arg"
- arg="$func_quote_for_eval_result"
- ;;
-
- # Flags to be passed through unchanged, with rationale:
- # -64, -mips[0-9] enable 64-bit mode for the SGI compiler
- # -r[0-9][0-9]* specify processor for the SGI compiler
- # -xarch=*, -xtarget=* enable 64-bit mode for the Sun compiler
- # +DA*, +DD* enable 64-bit mode for the HP compiler
- # -q* compiler args for the IBM compiler
- # -m*, -t[45]*, -txscale* architecture-specific flags for GCC
- # -F/path path to uninstalled frameworks, gcc on darwin
- # -p, -pg, --coverage, -fprofile-* profiling flags for GCC
- # @file GCC response files
- # -tp=* Portland pgcc target processor selection
- # --sysroot=* for sysroot support
- # -O*, -flto*, -fwhopr*, -fuse-linker-plugin GCC link-time optimization
- -64|-mips[0-9]|-r[0-9][0-9]*|-xarch=*|-xtarget=*|+DA*|+DD*|-q*|-m*| \
- -t[45]*|-txscale*|-p|-pg|--coverage|-fprofile-*|-F*|@*|-tp=*|--sysroot=*| \
- -O*|-flto*|-fwhopr*|-fuse-linker-plugin)
- func_quote_for_eval "$arg"
- arg="$func_quote_for_eval_result"
- func_append compile_command " $arg"
- func_append finalize_command " $arg"
- func_append compiler_flags " $arg"
- continue
- ;;
-
- # Some other compiler flag.
- -* | +*)
- func_quote_for_eval "$arg"
- arg="$func_quote_for_eval_result"
- ;;
-
- *.$objext)
- # A standard object.
- func_append objs " $arg"
- ;;
-
- *.lo)
- # A libtool-controlled object.
-
- # Check to see that this really is a libtool object.
- if func_lalib_unsafe_p "$arg"; then
- pic_object=
- non_pic_object=
-
- # Read the .lo file
- func_source "$arg"
-
- if test -z "$pic_object" ||
- test -z "$non_pic_object" ||
- test "$pic_object" = none &&
- test "$non_pic_object" = none; then
- func_fatal_error "cannot find name of object for \`$arg'"
- fi
-
- # Extract subdirectory from the argument.
- func_dirname "$arg" "/" ""
- xdir="$func_dirname_result"
-
- if test "$pic_object" != none; then
- # Prepend the subdirectory the object is found in.
- pic_object="$xdir$pic_object"
-
- if test "$prev" = dlfiles; then
- if test "$build_libtool_libs" = yes && test "$dlopen_support" = yes; then
- func_append dlfiles " $pic_object"
- prev=
- continue
- else
- # If libtool objects are unsupported, then we need to preload.
- prev=dlprefiles
- fi
- fi
-
- # CHECK ME: I think I busted this. -Ossama
- if test "$prev" = dlprefiles; then
- # Preload the old-style object.
- func_append dlprefiles " $pic_object"
- prev=
- fi
-
- # A PIC object.
- func_append libobjs " $pic_object"
- arg="$pic_object"
- fi
-
- # Non-PIC object.
- if test "$non_pic_object" != none; then
- # Prepend the subdirectory the object is found in.
- non_pic_object="$xdir$non_pic_object"
-
- # A standard non-PIC object
- func_append non_pic_objects " $non_pic_object"
- if test -z "$pic_object" || test "$pic_object" = none ; then
- arg="$non_pic_object"
- fi
- else
- # If the PIC object exists, use it instead.
- # $xdir was prepended to $pic_object above.
- non_pic_object="$pic_object"
- func_append non_pic_objects " $non_pic_object"
- fi
- else
- # Only an error if not doing a dry-run.
- if $opt_dry_run; then
- # Extract subdirectory from the argument.
- func_dirname "$arg" "/" ""
- xdir="$func_dirname_result"
-
- func_lo2o "$arg"
- pic_object=$xdir$objdir/$func_lo2o_result
- non_pic_object=$xdir$func_lo2o_result
- func_append libobjs " $pic_object"
- func_append non_pic_objects " $non_pic_object"
- else
- func_fatal_error "\`$arg' is not a valid libtool object"
- fi
- fi
- ;;
-
- *.$libext)
- # An archive.
- func_append deplibs " $arg"
- func_append old_deplibs " $arg"
- continue
- ;;
-
- *.la)
- # A libtool-controlled library.
-
- func_resolve_sysroot "$arg"
- if test "$prev" = dlfiles; then
- # This library was specified with -dlopen.
- func_append dlfiles " $func_resolve_sysroot_result"
- prev=
- elif test "$prev" = dlprefiles; then
- # The library was specified with -dlpreopen.
- func_append dlprefiles " $func_resolve_sysroot_result"
- prev=
- else
- func_append deplibs " $func_resolve_sysroot_result"
- fi
- continue
- ;;
-
- # Some other compiler argument.
- *)
- # Unknown arguments in both finalize_command and compile_command need
- # to be aesthetically quoted because they are evaled later.
- func_quote_for_eval "$arg"
- arg="$func_quote_for_eval_result"
- ;;
- esac # arg
-
- # Now actually substitute the argument into the commands.
- if test -n "$arg"; then
- func_append compile_command " $arg"
- func_append finalize_command " $arg"
- fi
- done # argument parsing loop
-
- test -n "$prev" && \
- func_fatal_help "the \`$prevarg' option requires an argument"
-
- if test "$export_dynamic" = yes && test -n "$export_dynamic_flag_spec"; then
- eval arg=\"$export_dynamic_flag_spec\"
- func_append compile_command " $arg"
- func_append finalize_command " $arg"
- fi
-
- oldlibs=
- # calculate the name of the file, without its directory
- func_basename "$output"
- outputname="$func_basename_result"
- libobjs_save="$libobjs"
-
- if test -n "$shlibpath_var"; then
- # get the directories listed in $shlibpath_var
- eval shlib_search_path=\`\$ECHO \"\${$shlibpath_var}\" \| \$SED \'s/:/ /g\'\`
- else
- shlib_search_path=
- fi
- eval sys_lib_search_path=\"$sys_lib_search_path_spec\"
- eval sys_lib_dlsearch_path=\"$sys_lib_dlsearch_path_spec\"
-
- func_dirname "$output" "/" ""
- output_objdir="$func_dirname_result$objdir"
- func_to_tool_file "$output_objdir/"
- tool_output_objdir=$func_to_tool_file_result
- # Create the object directory.
- func_mkdir_p "$output_objdir"
-
- # Determine the type of output
- case $output in
- "")
- func_fatal_help "you must specify an output file"
- ;;
- *.$libext) linkmode=oldlib ;;
- *.lo | *.$objext) linkmode=obj ;;
- *.la) linkmode=lib ;;
- *) linkmode=prog ;; # Anything else should be a program.
- esac
-
- specialdeplibs=
-
- libs=
- # Find all interdependent deplibs by searching for libraries
- # that are linked more than once (e.g. -la -lb -la)
- for deplib in $deplibs; do
- if $opt_preserve_dup_deps ; then
- case "$libs " in
- *" $deplib "*) func_append specialdeplibs " $deplib" ;;
- esac
- fi
- func_append libs " $deplib"
- done
-
- if test "$linkmode" = lib; then
- libs="$predeps $libs $compiler_lib_search_path $postdeps"
-
- # Compute libraries that are listed more than once in $predeps
- # $postdeps and mark them as special (i.e., whose duplicates are
- # not to be eliminated).
- pre_post_deps=
- if $opt_duplicate_compiler_generated_deps; then
- for pre_post_dep in $predeps $postdeps; do
- case "$pre_post_deps " in
- *" $pre_post_dep "*) func_append specialdeplibs " $pre_post_deps" ;;
- esac
- func_append pre_post_deps " $pre_post_dep"
- done
- fi
- pre_post_deps=
- fi
-
- deplibs=
- newdependency_libs=
- newlib_search_path=
- need_relink=no # whether we're linking any uninstalled libtool libraries
- notinst_deplibs= # not-installed libtool libraries
- notinst_path= # paths that contain not-installed libtool libraries
-
- case $linkmode in
- lib)
- passes="conv dlpreopen link"
- for file in $dlfiles $dlprefiles; do
- case $file in
- *.la) ;;
- *)
- func_fatal_help "libraries can \`-dlopen' only libtool libraries: $file"
- ;;
- esac
- done
- ;;
- prog)
- compile_deplibs=
- finalize_deplibs=
- alldeplibs=no
- newdlfiles=
- newdlprefiles=
- passes="conv scan dlopen dlpreopen link"
- ;;
- *) passes="conv"
- ;;
- esac
-
- for pass in $passes; do
- # The preopen pass in lib mode reverses $deplibs; put it back here
- # so that -L comes before libs that need it for instance...
- if test "$linkmode,$pass" = "lib,link"; then
- ## FIXME: Find the place where the list is rebuilt in the wrong
- ## order, and fix it there properly
- tmp_deplibs=
- for deplib in $deplibs; do
- tmp_deplibs="$deplib $tmp_deplibs"
- done
- deplibs="$tmp_deplibs"
- fi
-
- if test "$linkmode,$pass" = "lib,link" ||
- test "$linkmode,$pass" = "prog,scan"; then
- libs="$deplibs"
- deplibs=
- fi
- if test "$linkmode" = prog; then
- case $pass in
- dlopen) libs="$dlfiles" ;;
- dlpreopen) libs="$dlprefiles" ;;
- link) libs="$deplibs %DEPLIBS% $dependency_libs" ;;
- esac
- fi
- if test "$linkmode,$pass" = "lib,dlpreopen"; then
- # Collect and forward deplibs of preopened libtool libs
- for lib in $dlprefiles; do
- # Ignore non-libtool-libs
- dependency_libs=
- func_resolve_sysroot "$lib"
- case $lib in
- *.la) func_source "$func_resolve_sysroot_result" ;;
- esac
-
- # Collect preopened libtool deplibs, except any this library
- # has declared as weak libs
- for deplib in $dependency_libs; do
- func_basename "$deplib"
- deplib_base=$func_basename_result
- case " $weak_libs " in
- *" $deplib_base "*) ;;
- *) func_append deplibs " $deplib" ;;
- esac
- done
- done
- libs="$dlprefiles"
- fi
- if test "$pass" = dlopen; then
- # Collect dlpreopened libraries
- save_deplibs="$deplibs"
- deplibs=
- fi
-
- for deplib in $libs; do
- lib=
- found=no
- case $deplib in
- -mt|-mthreads|-kthread|-Kthread|-pthread|-pthreads|--thread-safe \
- |-threads|-fopenmp|-openmp|-mp|-xopenmp|-omp|-qsmp=*)
- if test "$linkmode,$pass" = "prog,link"; then
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- else
- func_append compiler_flags " $deplib"
- if test "$linkmode" = lib ; then
- case "$new_inherited_linker_flags " in
- *" $deplib "*) ;;
- * ) func_append new_inherited_linker_flags " $deplib" ;;
- esac
- fi
- fi
- continue
- ;;
- -l*)
- if test "$linkmode" != lib && test "$linkmode" != prog; then
- func_warning "\`-l' is ignored for archives/objects"
- continue
- fi
- func_stripname '-l' '' "$deplib"
- name=$func_stripname_result
- if test "$linkmode" = lib; then
- searchdirs="$newlib_search_path $lib_search_path $compiler_lib_search_dirs $sys_lib_search_path $shlib_search_path"
- else
- searchdirs="$newlib_search_path $lib_search_path $sys_lib_search_path $shlib_search_path"
- fi
- for searchdir in $searchdirs; do
- for search_ext in .la $std_shrext .so .a; do
- # Search the libtool library
- lib="$searchdir/lib${name}${search_ext}"
- if test -f "$lib"; then
- if test "$search_ext" = ".la"; then
- found=yes
- else
- found=no
- fi
- break 2
- fi
- done
- done
- if test "$found" != yes; then
- # deplib doesn't seem to be a libtool library
- if test "$linkmode,$pass" = "prog,link"; then
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- else
- deplibs="$deplib $deplibs"
- test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
- fi
- continue
- else # deplib is a libtool library
- # If $allow_libtool_libs_with_static_runtimes && $deplib is a stdlib,
- # We need to do some special things here, and not later.
- if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
- case " $predeps $postdeps " in
- *" $deplib "*)
- if func_lalib_p "$lib"; then
- library_names=
- old_library=
- func_source "$lib"
- for l in $old_library $library_names; do
- ll="$l"
- done
- if test "X$ll" = "X$old_library" ; then # only static version available
- found=no
- func_dirname "$lib" "" "."
- ladir="$func_dirname_result"
- lib=$ladir/$old_library
- if test "$linkmode,$pass" = "prog,link"; then
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- else
- deplibs="$deplib $deplibs"
- test "$linkmode" = lib && newdependency_libs="$deplib $newdependency_libs"
- fi
- continue
- fi
- fi
- ;;
- *) ;;
- esac
- fi
- fi
- ;; # -l
- *.ltframework)
- if test "$linkmode,$pass" = "prog,link"; then
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- else
- deplibs="$deplib $deplibs"
- if test "$linkmode" = lib ; then
- case "$new_inherited_linker_flags " in
- *" $deplib "*) ;;
- * ) func_append new_inherited_linker_flags " $deplib" ;;
- esac
- fi
- fi
- continue
- ;;
- -L*)
- case $linkmode in
- lib)
- deplibs="$deplib $deplibs"
- test "$pass" = conv && continue
- newdependency_libs="$deplib $newdependency_libs"
- func_stripname '-L' '' "$deplib"
- func_resolve_sysroot "$func_stripname_result"
- func_append newlib_search_path " $func_resolve_sysroot_result"
- ;;
- prog)
- if test "$pass" = conv; then
- deplibs="$deplib $deplibs"
- continue
- fi
- if test "$pass" = scan; then
- deplibs="$deplib $deplibs"
- else
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- fi
- func_stripname '-L' '' "$deplib"
- func_resolve_sysroot "$func_stripname_result"
- func_append newlib_search_path " $func_resolve_sysroot_result"
- ;;
- *)
- func_warning "\`-L' is ignored for archives/objects"
- ;;
- esac # linkmode
- continue
- ;; # -L
- -R*)
- if test "$pass" = link; then
- func_stripname '-R' '' "$deplib"
- func_resolve_sysroot "$func_stripname_result"
- dir=$func_resolve_sysroot_result
- # Make sure the xrpath contains only unique directories.
- case "$xrpath " in
- *" $dir "*) ;;
- *) func_append xrpath " $dir" ;;
- esac
- fi
- deplibs="$deplib $deplibs"
- continue
- ;;
- *.la)
- func_resolve_sysroot "$deplib"
- lib=$func_resolve_sysroot_result
- ;;
- *.$libext)
- if test "$pass" = conv; then
- deplibs="$deplib $deplibs"
- continue
- fi
- case $linkmode in
- lib)
- # Linking convenience modules into shared libraries is allowed,
- # but linking other static libraries is non-portable.
- case " $dlpreconveniencelibs " in
- *" $deplib "*) ;;
- *)
- valid_a_lib=no
- case $deplibs_check_method in
- match_pattern*)
- set dummy $deplibs_check_method; shift
- match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
- if eval "\$ECHO \"$deplib\"" 2>/dev/null | $SED 10q \
- | $EGREP "$match_pattern_regex" > /dev/null; then
- valid_a_lib=yes
- fi
- ;;
- pass_all)
- valid_a_lib=yes
- ;;
- esac
- if test "$valid_a_lib" != yes; then
- echo
- $ECHO "*** Warning: Trying to link with static lib archive $deplib."
- echo "*** I have the capability to make that library automatically link in when"
- echo "*** you link to this library. But I can only do this if you have a"
- echo "*** shared version of the library, which you do not appear to have"
- echo "*** because the file extensions .$libext of this argument makes me believe"
- echo "*** that it is just a static archive that I should not use here."
- else
- echo
- $ECHO "*** Warning: Linking the shared library $output against the"
- $ECHO "*** static library $deplib is not portable!"
- deplibs="$deplib $deplibs"
- fi
- ;;
- esac
- continue
- ;;
- prog)
- if test "$pass" != link; then
- deplibs="$deplib $deplibs"
- else
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- fi
- continue
- ;;
- esac # linkmode
- ;; # *.$libext
- *.lo | *.$objext)
- if test "$pass" = conv; then
- deplibs="$deplib $deplibs"
- elif test "$linkmode" = prog; then
- if test "$pass" = dlpreopen || test "$dlopen_support" != yes || test "$build_libtool_libs" = no; then
- # If there is no dlopen support or we're linking statically,
- # we need to preload.
- func_append newdlprefiles " $deplib"
- compile_deplibs="$deplib $compile_deplibs"
- finalize_deplibs="$deplib $finalize_deplibs"
- else
- func_append newdlfiles " $deplib"
- fi
- fi
- continue
- ;;
- %DEPLIBS%)
- alldeplibs=yes
- continue
- ;;
- esac # case $deplib
-
- if test "$found" = yes || test -f "$lib"; then :
- else
- func_fatal_error "cannot find the library \`$lib' or unhandled argument \`$deplib'"
- fi
-
- # Check to see that this really is a libtool archive.
- func_lalib_unsafe_p "$lib" \
- || func_fatal_error "\`$lib' is not a valid libtool archive"
-
- func_dirname "$lib" "" "."
- ladir="$func_dirname_result"
-
- dlname=
- dlopen=
- dlpreopen=
- libdir=
- library_names=
- old_library=
- inherited_linker_flags=
- # If the library was installed with an old release of libtool,
- # it will not redefine variables installed, or shouldnotlink
- installed=yes
- shouldnotlink=no
- avoidtemprpath=
-
-
- # Read the .la file
- func_source "$lib"
-
- # Convert "-framework foo" to "foo.ltframework"
- if test -n "$inherited_linker_flags"; then
- tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'`
- for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
- case " $new_inherited_linker_flags " in
- *" $tmp_inherited_linker_flag "*) ;;
- *) func_append new_inherited_linker_flags " $tmp_inherited_linker_flag";;
- esac
- done
- fi
- dependency_libs=`$ECHO " $dependency_libs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- if test "$linkmode,$pass" = "lib,link" ||
- test "$linkmode,$pass" = "prog,scan" ||
- { test "$linkmode" != prog && test "$linkmode" != lib; }; then
- test -n "$dlopen" && func_append dlfiles " $dlopen"
- test -n "$dlpreopen" && func_append dlprefiles " $dlpreopen"
- fi
-
- if test "$pass" = conv; then
- # Only check for convenience libraries
- deplibs="$lib $deplibs"
- if test -z "$libdir"; then
- if test -z "$old_library"; then
- func_fatal_error "cannot find name of link library for \`$lib'"
- fi
- # It is a libtool convenience library, so add in its objects.
- func_append convenience " $ladir/$objdir/$old_library"
- func_append old_convenience " $ladir/$objdir/$old_library"
- elif test "$linkmode" != prog && test "$linkmode" != lib; then
- func_fatal_error "\`$lib' is not a convenience library"
- fi
- tmp_libs=
- for deplib in $dependency_libs; do
- deplibs="$deplib $deplibs"
- if $opt_preserve_dup_deps ; then
- case "$tmp_libs " in
- *" $deplib "*) func_append specialdeplibs " $deplib" ;;
- esac
- fi
- func_append tmp_libs " $deplib"
- done
- continue
- fi # $pass = conv
-
-
- # Get the name of the library we link against.
- linklib=
- if test -n "$old_library" &&
- { test "$prefer_static_libs" = yes ||
- test "$prefer_static_libs,$installed" = "built,no"; }; then
- linklib=$old_library
- else
- for l in $old_library $library_names; do
- linklib="$l"
- done
- fi
- if test -z "$linklib"; then
- func_fatal_error "cannot find name of link library for \`$lib'"
- fi
-
- # This library was specified with -dlopen.
- if test "$pass" = dlopen; then
- if test -z "$libdir"; then
- func_fatal_error "cannot -dlopen a convenience library: \`$lib'"
- fi
- if test -z "$dlname" ||
- test "$dlopen_support" != yes ||
- test "$build_libtool_libs" = no; then
- # If there is no dlname, no dlopen support or we're linking
- # statically, we need to preload. We also need to preload any
- # dependent libraries so libltdl's deplib preloader doesn't
- # bomb out in the load deplibs phase.
- func_append dlprefiles " $lib $dependency_libs"
- else
- func_append newdlfiles " $lib"
- fi
- continue
- fi # $pass = dlopen
-
- # We need an absolute path.
- case $ladir in
- [\\/]* | [A-Za-z]:[\\/]*) abs_ladir="$ladir" ;;
- *)
- abs_ladir=`cd "$ladir" && pwd`
- if test -z "$abs_ladir"; then
- func_warning "cannot determine absolute directory name of \`$ladir'"
- func_warning "passing it literally to the linker, although it might fail"
- abs_ladir="$ladir"
- fi
- ;;
- esac
- func_basename "$lib"
- laname="$func_basename_result"
-
- # Find the relevant object directory and library name.
- if test "X$installed" = Xyes; then
- if test ! -f "$lt_sysroot$libdir/$linklib" && test -f "$abs_ladir/$linklib"; then
- func_warning "library \`$lib' was moved."
- dir="$ladir"
- absdir="$abs_ladir"
- libdir="$abs_ladir"
- else
- dir="$lt_sysroot$libdir"
- absdir="$lt_sysroot$libdir"
- fi
- test "X$hardcode_automatic" = Xyes && avoidtemprpath=yes
- else
- if test ! -f "$ladir/$objdir/$linklib" && test -f "$abs_ladir/$linklib"; then
- dir="$ladir"
- absdir="$abs_ladir"
- # Remove this search path later
- func_append notinst_path " $abs_ladir"
- else
- dir="$ladir/$objdir"
- absdir="$abs_ladir/$objdir"
- # Remove this search path later
- func_append notinst_path " $abs_ladir"
- fi
- fi # $installed = yes
- func_stripname 'lib' '.la' "$laname"
- name=$func_stripname_result
-
- # This library was specified with -dlpreopen.
- if test "$pass" = dlpreopen; then
- if test -z "$libdir" && test "$linkmode" = prog; then
- func_fatal_error "only libraries may -dlpreopen a convenience library: \`$lib'"
- fi
- case "$host" in
- # special handling for platforms with PE-DLLs.
- *cygwin* | *mingw* | *cegcc* )
- # Linker will automatically link against shared library if both
- # static and shared are present. Therefore, ensure we extract
- # symbols from the import library if a shared library is present
- # (otherwise, the dlopen module name will be incorrect). We do
- # this by putting the import library name into $newdlprefiles.
- # We recover the dlopen module name by 'saving' the la file
- # name in a special purpose variable, and (later) extracting the
- # dlname from the la file.
- if test -n "$dlname"; then
- func_tr_sh "$dir/$linklib"
- eval "libfile_$func_tr_sh_result=\$abs_ladir/\$laname"
- func_append newdlprefiles " $dir/$linklib"
- else
- func_append newdlprefiles " $dir/$old_library"
- # Keep a list of preopened convenience libraries to check
- # that they are being used correctly in the link pass.
- test -z "$libdir" && \
- func_append dlpreconveniencelibs " $dir/$old_library"
- fi
- ;;
- * )
- # Prefer using a static library (so that no silly _DYNAMIC symbols
- # are required to link).
- if test -n "$old_library"; then
- func_append newdlprefiles " $dir/$old_library"
- # Keep a list of preopened convenience libraries to check
- # that they are being used correctly in the link pass.
- test -z "$libdir" && \
- func_append dlpreconveniencelibs " $dir/$old_library"
- # Otherwise, use the dlname, so that lt_dlopen finds it.
- elif test -n "$dlname"; then
- func_append newdlprefiles " $dir/$dlname"
- else
- func_append newdlprefiles " $dir/$linklib"
- fi
- ;;
- esac
- fi # $pass = dlpreopen
-
- if test -z "$libdir"; then
- # Link the convenience library
- if test "$linkmode" = lib; then
- deplibs="$dir/$old_library $deplibs"
- elif test "$linkmode,$pass" = "prog,link"; then
- compile_deplibs="$dir/$old_library $compile_deplibs"
- finalize_deplibs="$dir/$old_library $finalize_deplibs"
- else
- deplibs="$lib $deplibs" # used for prog,scan pass
- fi
- continue
- fi
-
-
- if test "$linkmode" = prog && test "$pass" != link; then
- func_append newlib_search_path " $ladir"
- deplibs="$lib $deplibs"
-
- linkalldeplibs=no
- if test "$link_all_deplibs" != no || test -z "$library_names" ||
- test "$build_libtool_libs" = no; then
- linkalldeplibs=yes
- fi
-
- tmp_libs=
- for deplib in $dependency_libs; do
- case $deplib in
- -L*) func_stripname '-L' '' "$deplib"
- func_resolve_sysroot "$func_stripname_result"
- func_append newlib_search_path " $func_resolve_sysroot_result"
- ;;
- esac
- # Need to link against all dependency_libs?
- if test "$linkalldeplibs" = yes; then
- deplibs="$deplib $deplibs"
- else
- # Need to hardcode shared library paths
- # or/and link against static libraries
- newdependency_libs="$deplib $newdependency_libs"
- fi
- if $opt_preserve_dup_deps ; then
- case "$tmp_libs " in
- *" $deplib "*) func_append specialdeplibs " $deplib" ;;
- esac
- fi
- func_append tmp_libs " $deplib"
- done # for deplib
- continue
- fi # $linkmode = prog...
-
- if test "$linkmode,$pass" = "prog,link"; then
- if test -n "$library_names" &&
- { { test "$prefer_static_libs" = no ||
- test "$prefer_static_libs,$installed" = "built,yes"; } ||
- test -z "$old_library"; }; then
- # We need to hardcode the library path
- if test -n "$shlibpath_var" && test -z "$avoidtemprpath" ; then
- # Make sure the rpath contains only unique directories.
- case "$temp_rpath:" in
- *"$absdir:"*) ;;
- *) func_append temp_rpath "$absdir:" ;;
- esac
- fi
-
- # Hardcode the library path.
- # Skip directories that are in the system default run-time
- # search path.
- case " $sys_lib_dlsearch_path " in
- *" $absdir "*) ;;
- *)
- case "$compile_rpath " in
- *" $absdir "*) ;;
- *) func_append compile_rpath " $absdir" ;;
- esac
- ;;
- esac
- case " $sys_lib_dlsearch_path " in
- *" $libdir "*) ;;
- *)
- case "$finalize_rpath " in
- *" $libdir "*) ;;
- *) func_append finalize_rpath " $libdir" ;;
- esac
- ;;
- esac
- fi # $linkmode,$pass = prog,link...
-
- if test "$alldeplibs" = yes &&
- { test "$deplibs_check_method" = pass_all ||
- { test "$build_libtool_libs" = yes &&
- test -n "$library_names"; }; }; then
- # We only need to search for static libraries
- continue
- fi
- fi
-
- link_static=no # Whether the deplib will be linked statically
- use_static_libs=$prefer_static_libs
- if test "$use_static_libs" = built && test "$installed" = yes; then
- use_static_libs=no
- fi
- if test -n "$library_names" &&
- { test "$use_static_libs" = no || test -z "$old_library"; }; then
- case $host in
- *cygwin* | *mingw* | *cegcc*)
- # No point in relinking DLLs because paths are not encoded
- func_append notinst_deplibs " $lib"
- need_relink=no
- ;;
- *)
- if test "$installed" = no; then
- func_append notinst_deplibs " $lib"
- need_relink=yes
- fi
- ;;
- esac
- # This is a shared library
-
- # Warn about portability, can't link against -module's on some
- # systems (darwin). Don't bleat about dlopened modules though!
- dlopenmodule=""
- for dlpremoduletest in $dlprefiles; do
- if test "X$dlpremoduletest" = "X$lib"; then
- dlopenmodule="$dlpremoduletest"
- break
- fi
- done
- if test -z "$dlopenmodule" && test "$shouldnotlink" = yes && test "$pass" = link; then
- echo
- if test "$linkmode" = prog; then
- $ECHO "*** Warning: Linking the executable $output against the loadable module"
- else
- $ECHO "*** Warning: Linking the shared library $output against the loadable module"
- fi
- $ECHO "*** $linklib is not portable!"
- fi
- if test "$linkmode" = lib &&
- test "$hardcode_into_libs" = yes; then
- # Hardcode the library path.
- # Skip directories that are in the system default run-time
- # search path.
- case " $sys_lib_dlsearch_path " in
- *" $absdir "*) ;;
- *)
- case "$compile_rpath " in
- *" $absdir "*) ;;
- *) func_append compile_rpath " $absdir" ;;
- esac
- ;;
- esac
- case " $sys_lib_dlsearch_path " in
- *" $libdir "*) ;;
- *)
- case "$finalize_rpath " in
- *" $libdir "*) ;;
- *) func_append finalize_rpath " $libdir" ;;
- esac
- ;;
- esac
- fi
-
- if test -n "$old_archive_from_expsyms_cmds"; then
- # figure out the soname
- set dummy $library_names
- shift
- realname="$1"
- shift
- libname=`eval "\\$ECHO \"$libname_spec\""`
- # use dlname if we got it. it's perfectly good, no?
- if test -n "$dlname"; then
- soname="$dlname"
- elif test -n "$soname_spec"; then
- # bleh windows
- case $host in
- *cygwin* | mingw* | *cegcc*)
- func_arith $current - $age
- major=$func_arith_result
- versuffix="-$major"
- ;;
- esac
- eval soname=\"$soname_spec\"
- else
- soname="$realname"
- fi
-
- # Make a new name for the extract_expsyms_cmds to use
- soroot="$soname"
- func_basename "$soroot"
- soname="$func_basename_result"
- func_stripname 'lib' '.dll' "$soname"
- newlib=libimp-$func_stripname_result.a
-
- # If the library has no export list, then create one now
- if test -f "$output_objdir/$soname-def"; then :
- else
- func_verbose "extracting exported symbol list from \`$soname'"
- func_execute_cmds "$extract_expsyms_cmds" 'exit $?'
- fi
-
- # Create $newlib
- if test -f "$output_objdir/$newlib"; then :; else
- func_verbose "generating import library for \`$soname'"
- func_execute_cmds "$old_archive_from_expsyms_cmds" 'exit $?'
- fi
- # make sure the library variables are pointing to the new library
- dir=$output_objdir
- linklib=$newlib
- fi # test -n "$old_archive_from_expsyms_cmds"
-
- if test "$linkmode" = prog || test "$opt_mode" != relink; then
- add_shlibpath=
- add_dir=
- add=
- lib_linked=yes
- case $hardcode_action in
- immediate | unsupported)
- if test "$hardcode_direct" = no; then
- add="$dir/$linklib"
- case $host in
- *-*-sco3.2v5.0.[024]*) add_dir="-L$dir" ;;
- *-*-sysv4*uw2*) add_dir="-L$dir" ;;
- *-*-sysv5OpenUNIX* | *-*-sysv5UnixWare7.[01].[10]* | \
- *-*-unixware7*) add_dir="-L$dir" ;;
- *-*-darwin* )
- # if the lib is a (non-dlopened) module then we can not
- # link against it, someone is ignoring the earlier warnings
- if /usr/bin/file -L $add 2> /dev/null |
- $GREP ": [^:]* bundle" >/dev/null ; then
- if test "X$dlopenmodule" != "X$lib"; then
- $ECHO "*** Warning: lib $linklib is a module, not a shared library"
- if test -z "$old_library" ; then
- echo
- echo "*** And there doesn't seem to be a static archive available"
- echo "*** The link will probably fail, sorry"
- else
- add="$dir/$old_library"
- fi
- elif test -n "$old_library"; then
- add="$dir/$old_library"
- fi
- fi
- esac
- elif test "$hardcode_minus_L" = no; then
- case $host in
- *-*-sunos*) add_shlibpath="$dir" ;;
- esac
- add_dir="-L$dir"
- add="-l$name"
- elif test "$hardcode_shlibpath_var" = no; then
- add_shlibpath="$dir"
- add="-l$name"
- else
- lib_linked=no
- fi
- ;;
- relink)
- if test "$hardcode_direct" = yes &&
- test "$hardcode_direct_absolute" = no; then
- add="$dir/$linklib"
- elif test "$hardcode_minus_L" = yes; then
- add_dir="-L$absdir"
- # Try looking first in the location we're being installed to.
- if test -n "$inst_prefix_dir"; then
- case $libdir in
- [\\/]*)
- func_append add_dir " -L$inst_prefix_dir$libdir"
- ;;
- esac
- fi
- add="-l$name"
- elif test "$hardcode_shlibpath_var" = yes; then
- add_shlibpath="$dir"
- add="-l$name"
- else
- lib_linked=no
- fi
- ;;
- *) lib_linked=no ;;
- esac
-
- if test "$lib_linked" != yes; then
- func_fatal_configuration "unsupported hardcode properties"
- fi
-
- if test -n "$add_shlibpath"; then
- case :$compile_shlibpath: in
- *":$add_shlibpath:"*) ;;
- *) func_append compile_shlibpath "$add_shlibpath:" ;;
- esac
- fi
- if test "$linkmode" = prog; then
- test -n "$add_dir" && compile_deplibs="$add_dir $compile_deplibs"
- test -n "$add" && compile_deplibs="$add $compile_deplibs"
- else
- test -n "$add_dir" && deplibs="$add_dir $deplibs"
- test -n "$add" && deplibs="$add $deplibs"
- if test "$hardcode_direct" != yes &&
- test "$hardcode_minus_L" != yes &&
- test "$hardcode_shlibpath_var" = yes; then
- case :$finalize_shlibpath: in
- *":$libdir:"*) ;;
- *) func_append finalize_shlibpath "$libdir:" ;;
- esac
- fi
- fi
- fi
-
- if test "$linkmode" = prog || test "$opt_mode" = relink; then
- add_shlibpath=
- add_dir=
- add=
- # Finalize command for both is simple: just hardcode it.
- if test "$hardcode_direct" = yes &&
- test "$hardcode_direct_absolute" = no; then
- add="$libdir/$linklib"
- elif test "$hardcode_minus_L" = yes; then
- add_dir="-L$libdir"
- add="-l$name"
- elif test "$hardcode_shlibpath_var" = yes; then
- case :$finalize_shlibpath: in
- *":$libdir:"*) ;;
- *) func_append finalize_shlibpath "$libdir:" ;;
- esac
- add="-l$name"
- elif test "$hardcode_automatic" = yes; then
- if test -n "$inst_prefix_dir" &&
- test -f "$inst_prefix_dir$libdir/$linklib" ; then
- add="$inst_prefix_dir$libdir/$linklib"
- else
- add="$libdir/$linklib"
- fi
- else
- # We cannot seem to hardcode it, guess we'll fake it.
- add_dir="-L$libdir"
- # Try looking first in the location we're being installed to.
- if test -n "$inst_prefix_dir"; then
- case $libdir in
- [\\/]*)
- func_append add_dir " -L$inst_prefix_dir$libdir"
- ;;
- esac
- fi
- add="-l$name"
- fi
-
- if test "$linkmode" = prog; then
- test -n "$add_dir" && finalize_deplibs="$add_dir $finalize_deplibs"
- test -n "$add" && finalize_deplibs="$add $finalize_deplibs"
- else
- test -n "$add_dir" && deplibs="$add_dir $deplibs"
- test -n "$add" && deplibs="$add $deplibs"
- fi
- fi
- elif test "$linkmode" = prog; then
- # Here we assume that one of hardcode_direct or hardcode_minus_L
- # is not unsupported. This is valid on all known static and
- # shared platforms.
- if test "$hardcode_direct" != unsupported; then
- test -n "$old_library" && linklib="$old_library"
- compile_deplibs="$dir/$linklib $compile_deplibs"
- finalize_deplibs="$dir/$linklib $finalize_deplibs"
- else
- compile_deplibs="-l$name -L$dir $compile_deplibs"
- finalize_deplibs="-l$name -L$dir $finalize_deplibs"
- fi
- elif test "$build_libtool_libs" = yes; then
- # Not a shared library
- if test "$deplibs_check_method" != pass_all; then
- # We're trying link a shared library against a static one
- # but the system doesn't support it.
-
- # Just print a warning and add the library to dependency_libs so
- # that the program can be linked against the static library.
- echo
- $ECHO "*** Warning: This system can not link to static lib archive $lib."
- echo "*** I have the capability to make that library automatically link in when"
- echo "*** you link to this library. But I can only do this if you have a"
- echo "*** shared version of the library, which you do not appear to have."
- if test "$module" = yes; then
- echo "*** But as you try to build a module library, libtool will still create "
- echo "*** a static module, that should work as long as the dlopening application"
- echo "*** is linked with the -dlopen flag to resolve symbols at runtime."
- if test -z "$global_symbol_pipe"; then
- echo
- echo "*** However, this would only work if libtool was able to extract symbol"
- echo "*** lists from a program, using \`nm' or equivalent, but libtool could"
- echo "*** not find such a program. So, this module is probably useless."
- echo "*** \`nm' from GNU binutils and a full rebuild may help."
- fi
- if test "$build_old_libs" = no; then
- build_libtool_libs=module
- build_old_libs=yes
- else
- build_libtool_libs=no
- fi
- fi
- else
- deplibs="$dir/$old_library $deplibs"
- link_static=yes
- fi
- fi # link shared/static library?
-
- if test "$linkmode" = lib; then
- if test -n "$dependency_libs" &&
- { test "$hardcode_into_libs" != yes ||
- test "$build_old_libs" = yes ||
- test "$link_static" = yes; }; then
- # Extract -R from dependency_libs
- temp_deplibs=
- for libdir in $dependency_libs; do
- case $libdir in
- -R*) func_stripname '-R' '' "$libdir"
- temp_xrpath=$func_stripname_result
- case " $xrpath " in
- *" $temp_xrpath "*) ;;
- *) func_append xrpath " $temp_xrpath";;
- esac;;
- *) func_append temp_deplibs " $libdir";;
- esac
- done
- dependency_libs="$temp_deplibs"
- fi
-
- func_append newlib_search_path " $absdir"
- # Link against this library
- test "$link_static" = no && newdependency_libs="$abs_ladir/$laname $newdependency_libs"
- # ... and its dependency_libs
- tmp_libs=
- for deplib in $dependency_libs; do
- newdependency_libs="$deplib $newdependency_libs"
- case $deplib in
- -L*) func_stripname '-L' '' "$deplib"
- func_resolve_sysroot "$func_stripname_result";;
- *) func_resolve_sysroot "$deplib" ;;
- esac
- if $opt_preserve_dup_deps ; then
- case "$tmp_libs " in
- *" $func_resolve_sysroot_result "*)
- func_append specialdeplibs " $func_resolve_sysroot_result" ;;
- esac
- fi
- func_append tmp_libs " $func_resolve_sysroot_result"
- done
-
- if test "$link_all_deplibs" != no; then
- # Add the search paths of all dependency libraries
- for deplib in $dependency_libs; do
- path=
- case $deplib in
- -L*) path="$deplib" ;;
- *.la)
- func_resolve_sysroot "$deplib"
- deplib=$func_resolve_sysroot_result
- func_dirname "$deplib" "" "."
- dir=$func_dirname_result
- # We need an absolute path.
- case $dir in
- [\\/]* | [A-Za-z]:[\\/]*) absdir="$dir" ;;
- *)
- absdir=`cd "$dir" && pwd`
- if test -z "$absdir"; then
- func_warning "cannot determine absolute directory name of \`$dir'"
- absdir="$dir"
- fi
- ;;
- esac
- if $GREP "^installed=no" $deplib > /dev/null; then
- case $host in
- *-*-darwin*)
- depdepl=
- eval deplibrary_names=`${SED} -n -e 's/^library_names=\(.*\)$/\1/p' $deplib`
- if test -n "$deplibrary_names" ; then
- for tmp in $deplibrary_names ; do
- depdepl=$tmp
- done
- if test -f "$absdir/$objdir/$depdepl" ; then
- depdepl="$absdir/$objdir/$depdepl"
- darwin_install_name=`${OTOOL} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
- if test -z "$darwin_install_name"; then
- darwin_install_name=`${OTOOL64} -L $depdepl | awk '{if (NR == 2) {print $1;exit}}'`
- fi
- func_append compiler_flags " ${wl}-dylib_file ${wl}${darwin_install_name}:${depdepl}"
- func_append linker_flags " -dylib_file ${darwin_install_name}:${depdepl}"
- path=
- fi
- fi
- ;;
- *)
- path="-L$absdir/$objdir"
- ;;
- esac
- else
- eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $deplib`
- test -z "$libdir" && \
- func_fatal_error "\`$deplib' is not a valid libtool archive"
- test "$absdir" != "$libdir" && \
- func_warning "\`$deplib' seems to be moved"
-
- path="-L$absdir"
- fi
- ;;
- esac
- case " $deplibs " in
- *" $path "*) ;;
- *) deplibs="$path $deplibs" ;;
- esac
- done
- fi # link_all_deplibs != no
- fi # linkmode = lib
- done # for deplib in $libs
- if test "$pass" = link; then
- if test "$linkmode" = "prog"; then
- compile_deplibs="$new_inherited_linker_flags $compile_deplibs"
- finalize_deplibs="$new_inherited_linker_flags $finalize_deplibs"
- else
- compiler_flags="$compiler_flags "`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- fi
- fi
- dependency_libs="$newdependency_libs"
- if test "$pass" = dlpreopen; then
- # Link the dlpreopened libraries before other libraries
- for deplib in $save_deplibs; do
- deplibs="$deplib $deplibs"
- done
- fi
- if test "$pass" != dlopen; then
- if test "$pass" != conv; then
- # Make sure lib_search_path contains only unique directories.
- lib_search_path=
- for dir in $newlib_search_path; do
- case "$lib_search_path " in
- *" $dir "*) ;;
- *) func_append lib_search_path " $dir" ;;
- esac
- done
- newlib_search_path=
- fi
-
- if test "$linkmode,$pass" != "prog,link"; then
- vars="deplibs"
- else
- vars="compile_deplibs finalize_deplibs"
- fi
- for var in $vars dependency_libs; do
- # Add libraries to $var in reverse order
- eval tmp_libs=\"\$$var\"
- new_libs=
- for deplib in $tmp_libs; do
- # FIXME: Pedantically, this is the right thing to do, so
- # that some nasty dependency loop isn't accidentally
- # broken:
- #new_libs="$deplib $new_libs"
- # Pragmatically, this seems to cause very few problems in
- # practice:
- case $deplib in
- -L*) new_libs="$deplib $new_libs" ;;
- -R*) ;;
- *)
- # And here is the reason: when a library appears more
- # than once as an explicit dependence of a library, or
- # is implicitly linked in more than once by the
- # compiler, it is considered special, and multiple
- # occurrences thereof are not removed. Compare this
- # with having the same library being listed as a
- # dependency of multiple other libraries: in this case,
- # we know (pedantically, we assume) the library does not
- # need to be listed more than once, so we keep only the
- # last copy. This is not always right, but it is rare
- # enough that we require users that really mean to play
- # such unportable linking tricks to link the library
- # using -Wl,-lname, so that libtool does not consider it
- # for duplicate removal.
- case " $specialdeplibs " in
- *" $deplib "*) new_libs="$deplib $new_libs" ;;
- *)
- case " $new_libs " in
- *" $deplib "*) ;;
- *) new_libs="$deplib $new_libs" ;;
- esac
- ;;
- esac
- ;;
- esac
- done
- tmp_libs=
- for deplib in $new_libs; do
- case $deplib in
- -L*)
- case " $tmp_libs " in
- *" $deplib "*) ;;
- *) func_append tmp_libs " $deplib" ;;
- esac
- ;;
- *) func_append tmp_libs " $deplib" ;;
- esac
- done
- eval $var=\"$tmp_libs\"
- done # for var
- fi
- # Last step: remove runtime libs from dependency_libs
- # (they stay in deplibs)
- tmp_libs=
- for i in $dependency_libs ; do
- case " $predeps $postdeps $compiler_lib_search_path " in
- *" $i "*)
- i=""
- ;;
- esac
- if test -n "$i" ; then
- func_append tmp_libs " $i"
- fi
- done
- dependency_libs=$tmp_libs
- done # for pass
- if test "$linkmode" = prog; then
- dlfiles="$newdlfiles"
- fi
- if test "$linkmode" = prog || test "$linkmode" = lib; then
- dlprefiles="$newdlprefiles"
- fi
-
- case $linkmode in
- oldlib)
- if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
- func_warning "\`-dlopen' is ignored for archives"
- fi
-
- case " $deplibs" in
- *\ -l* | *\ -L*)
- func_warning "\`-l' and \`-L' are ignored for archives" ;;
- esac
-
- test -n "$rpath" && \
- func_warning "\`-rpath' is ignored for archives"
-
- test -n "$xrpath" && \
- func_warning "\`-R' is ignored for archives"
-
- test -n "$vinfo" && \
- func_warning "\`-version-info/-version-number' is ignored for archives"
-
- test -n "$release" && \
- func_warning "\`-release' is ignored for archives"
-
- test -n "$export_symbols$export_symbols_regex" && \
- func_warning "\`-export-symbols' is ignored for archives"
-
- # Now set the variables for building old libraries.
- build_libtool_libs=no
- oldlibs="$output"
- func_append objs "$old_deplibs"
- ;;
-
- lib)
- # Make sure we only generate libraries of the form `libNAME.la'.
- case $outputname in
- lib*)
- func_stripname 'lib' '.la' "$outputname"
- name=$func_stripname_result
- eval shared_ext=\"$shrext_cmds\"
- eval libname=\"$libname_spec\"
- ;;
- *)
- test "$module" = no && \
- func_fatal_help "libtool library \`$output' must begin with \`lib'"
-
- if test "$need_lib_prefix" != no; then
- # Add the "lib" prefix for modules if required
- func_stripname '' '.la' "$outputname"
- name=$func_stripname_result
- eval shared_ext=\"$shrext_cmds\"
- eval libname=\"$libname_spec\"
- else
- func_stripname '' '.la' "$outputname"
- libname=$func_stripname_result
- fi
- ;;
- esac
-
- if test -n "$objs"; then
- if test "$deplibs_check_method" != pass_all; then
- func_fatal_error "cannot build libtool library \`$output' from non-libtool objects on this host:$objs"
- else
- echo
- $ECHO "*** Warning: Linking the shared library $output against the non-libtool"
- $ECHO "*** objects $objs is not portable!"
- func_append libobjs " $objs"
- fi
- fi
-
- test "$dlself" != no && \
- func_warning "\`-dlopen self' is ignored for libtool libraries"
-
- set dummy $rpath
- shift
- test "$#" -gt 1 && \
- func_warning "ignoring multiple \`-rpath's for a libtool library"
-
- install_libdir="$1"
-
- oldlibs=
- if test -z "$rpath"; then
- if test "$build_libtool_libs" = yes; then
- # Building a libtool convenience library.
- # Some compilers have problems with a `.al' extension so
- # convenience libraries should have the same extension an
- # archive normally would.
- oldlibs="$output_objdir/$libname.$libext $oldlibs"
- build_libtool_libs=convenience
- build_old_libs=yes
- fi
-
- test -n "$vinfo" && \
- func_warning "\`-version-info/-version-number' is ignored for convenience libraries"
-
- test -n "$release" && \
- func_warning "\`-release' is ignored for convenience libraries"
- else
-
- # Parse the version information argument.
- save_ifs="$IFS"; IFS=':'
- set dummy $vinfo 0 0 0
- shift
- IFS="$save_ifs"
-
- test -n "$7" && \
- func_fatal_help "too many parameters to \`-version-info'"
-
- # convert absolute version numbers to libtool ages
- # this retains compatibility with .la files and attempts
- # to make the code below a bit more comprehensible
-
- case $vinfo_number in
- yes)
- number_major="$1"
- number_minor="$2"
- number_revision="$3"
- #
- # There are really only two kinds -- those that
- # use the current revision as the major version
- # and those that subtract age and use age as
- # a minor version. But, then there is irix
- # which has an extra 1 added just for fun
- #
- case $version_type in
- # correct linux to gnu/linux during the next big refactor
- darwin|linux|osf|windows|none)
- func_arith $number_major + $number_minor
- current=$func_arith_result
- age="$number_minor"
- revision="$number_revision"
- ;;
- freebsd-aout|freebsd-elf|qnx|sunos)
- current="$number_major"
- revision="$number_minor"
- age="0"
- ;;
- irix|nonstopux)
- func_arith $number_major + $number_minor
- current=$func_arith_result
- age="$number_minor"
- revision="$number_minor"
- lt_irix_increment=no
- ;;
- esac
- ;;
- no)
- current="$1"
- revision="$2"
- age="$3"
- ;;
- esac
-
- # Check that each of the things are valid numbers.
- case $current in
- 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
- *)
- func_error "CURRENT \`$current' must be a nonnegative integer"
- func_fatal_error "\`$vinfo' is not valid version information"
- ;;
- esac
-
- case $revision in
- 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
- *)
- func_error "REVISION \`$revision' must be a nonnegative integer"
- func_fatal_error "\`$vinfo' is not valid version information"
- ;;
- esac
-
- case $age in
- 0|[1-9]|[1-9][0-9]|[1-9][0-9][0-9]|[1-9][0-9][0-9][0-9]|[1-9][0-9][0-9][0-9][0-9]) ;;
- *)
- func_error "AGE \`$age' must be a nonnegative integer"
- func_fatal_error "\`$vinfo' is not valid version information"
- ;;
- esac
-
- if test "$age" -gt "$current"; then
- func_error "AGE \`$age' is greater than the current interface number \`$current'"
- func_fatal_error "\`$vinfo' is not valid version information"
- fi
-
- # Calculate the version variables.
- major=
- versuffix=
- verstring=
- case $version_type in
- none) ;;
-
- darwin)
- # Like Linux, but with the current version available in
- # verstring for coding it into the library header
- func_arith $current - $age
- major=.$func_arith_result
- versuffix="$major.$age.$revision"
- # Darwin ld doesn't like 0 for these options...
- func_arith $current + 1
- minor_current=$func_arith_result
- xlcverstring="${wl}-compatibility_version ${wl}$minor_current ${wl}-current_version ${wl}$minor_current.$revision"
- verstring="-compatibility_version $minor_current -current_version $minor_current.$revision"
- ;;
-
- freebsd-aout)
- major=".$current"
- versuffix=".$current.$revision";
- ;;
-
- freebsd-elf)
- major=".$current"
- versuffix=".$current"
- ;;
-
- irix | nonstopux)
- if test "X$lt_irix_increment" = "Xno"; then
- func_arith $current - $age
- else
- func_arith $current - $age + 1
- fi
- major=$func_arith_result
-
- case $version_type in
- nonstopux) verstring_prefix=nonstopux ;;
- *) verstring_prefix=sgi ;;
- esac
- verstring="$verstring_prefix$major.$revision"
-
- # Add in all the interfaces that we are compatible with.
- loop=$revision
- while test "$loop" -ne 0; do
- func_arith $revision - $loop
- iface=$func_arith_result
- func_arith $loop - 1
- loop=$func_arith_result
- verstring="$verstring_prefix$major.$iface:$verstring"
- done
-
- # Before this point, $major must not contain `.'.
- major=.$major
- versuffix="$major.$revision"
- ;;
-
- linux) # correct to gnu/linux during the next big refactor
- func_arith $current - $age
- major=.$func_arith_result
- versuffix="$major.$age.$revision"
- ;;
-
- osf)
- func_arith $current - $age
- major=.$func_arith_result
- versuffix=".$current.$age.$revision"
- verstring="$current.$age.$revision"
-
- # Add in all the interfaces that we are compatible with.
- loop=$age
- while test "$loop" -ne 0; do
- func_arith $current - $loop
- iface=$func_arith_result
- func_arith $loop - 1
- loop=$func_arith_result
- verstring="$verstring:${iface}.0"
- done
-
- # Make executables depend on our current version.
- func_append verstring ":${current}.0"
- ;;
-
- qnx)
- major=".$current"
- versuffix=".$current"
- ;;
-
- sunos)
- major=".$current"
- versuffix=".$current.$revision"
- ;;
-
- windows)
- # Use '-' rather than '.', since we only want one
- # extension on DOS 8.3 filesystems.
- func_arith $current - $age
- major=$func_arith_result
- versuffix="-$major"
- ;;
-
- *)
- func_fatal_configuration "unknown library version type \`$version_type'"
- ;;
- esac
-
- # Clear the version info if we defaulted, and they specified a release.
- if test -z "$vinfo" && test -n "$release"; then
- major=
- case $version_type in
- darwin)
- # we can't check for "0.0" in archive_cmds due to quoting
- # problems, so we reset it completely
- verstring=
- ;;
- *)
- verstring="0.0"
- ;;
- esac
- if test "$need_version" = no; then
- versuffix=
- else
- versuffix=".0.0"
- fi
- fi
-
- # Remove version info from name if versioning should be avoided
- if test "$avoid_version" = yes && test "$need_version" = no; then
- major=
- versuffix=
- verstring=""
- fi
-
- # Check to see if the archive will have undefined symbols.
- if test "$allow_undefined" = yes; then
- if test "$allow_undefined_flag" = unsupported; then
- func_warning "undefined symbols not allowed in $host shared libraries"
- build_libtool_libs=no
- build_old_libs=yes
- fi
- else
- # Don't allow undefined symbols.
- allow_undefined_flag="$no_undefined_flag"
- fi
-
- fi
-
- func_generate_dlsyms "$libname" "$libname" "yes"
- func_append libobjs " $symfileobj"
- test "X$libobjs" = "X " && libobjs=
-
- if test "$opt_mode" != relink; then
- # Remove our outputs, but don't remove object files since they
- # may have been created when compiling PIC objects.
- removelist=
- tempremovelist=`$ECHO "$output_objdir/*"`
- for p in $tempremovelist; do
- case $p in
- *.$objext | *.gcno)
- ;;
- $output_objdir/$outputname | $output_objdir/$libname.* | $output_objdir/${libname}${release}.*)
- if test "X$precious_files_regex" != "X"; then
- if $ECHO "$p" | $EGREP -e "$precious_files_regex" >/dev/null 2>&1
- then
- continue
- fi
- fi
- func_append removelist " $p"
- ;;
- *) ;;
- esac
- done
- test -n "$removelist" && \
- func_show_eval "${RM}r \$removelist"
- fi
-
- # Now set the variables for building old libraries.
- if test "$build_old_libs" = yes && test "$build_libtool_libs" != convenience ; then
- func_append oldlibs " $output_objdir/$libname.$libext"
-
- # Transform .lo files to .o files.
- oldobjs="$objs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; $lo2o" | $NL2SP`
- fi
-
- # Eliminate all temporary directories.
- #for path in $notinst_path; do
- # lib_search_path=`$ECHO "$lib_search_path " | $SED "s% $path % %g"`
- # deplibs=`$ECHO "$deplibs " | $SED "s% -L$path % %g"`
- # dependency_libs=`$ECHO "$dependency_libs " | $SED "s% -L$path % %g"`
- #done
-
- if test -n "$xrpath"; then
- # If the user specified any rpath flags, then add them.
- temp_xrpath=
- for libdir in $xrpath; do
- func_replace_sysroot "$libdir"
- func_append temp_xrpath " -R$func_replace_sysroot_result"
- case "$finalize_rpath " in
- *" $libdir "*) ;;
- *) func_append finalize_rpath " $libdir" ;;
- esac
- done
- if test "$hardcode_into_libs" != yes || test "$build_old_libs" = yes; then
- dependency_libs="$temp_xrpath $dependency_libs"
- fi
- fi
-
- # Make sure dlfiles contains only unique files that won't be dlpreopened
- old_dlfiles="$dlfiles"
- dlfiles=
- for lib in $old_dlfiles; do
- case " $dlprefiles $dlfiles " in
- *" $lib "*) ;;
- *) func_append dlfiles " $lib" ;;
- esac
- done
-
- # Make sure dlprefiles contains only unique files
- old_dlprefiles="$dlprefiles"
- dlprefiles=
- for lib in $old_dlprefiles; do
- case "$dlprefiles " in
- *" $lib "*) ;;
- *) func_append dlprefiles " $lib" ;;
- esac
- done
-
- if test "$build_libtool_libs" = yes; then
- if test -n "$rpath"; then
- case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-*-beos* | *-cegcc* | *-*-haiku*)
- # these systems don't actually have a c library (as such)!
- ;;
- *-*-rhapsody* | *-*-darwin1.[012])
- # Rhapsody C library is in the System framework
- func_append deplibs " System.ltframework"
- ;;
- *-*-netbsd*)
- # Don't link with libc until the a.out ld.so is fixed.
- ;;
- *-*-openbsd* | *-*-freebsd* | *-*-dragonfly*)
- # Do not include libc due to us having libc/libc_r.
- ;;
- *-*-sco3.2v5* | *-*-sco5v6*)
- # Causes problems with __ctype
- ;;
- *-*-sysv4.2uw2* | *-*-sysv5* | *-*-unixware* | *-*-OpenUNIX*)
- # Compiler inserts libc in the correct place for threads to work
- ;;
- *)
- # Add libc to deplibs on all other systems if necessary.
- if test "$build_libtool_need_lc" = "yes"; then
- func_append deplibs " -lc"
- fi
- ;;
- esac
- fi
-
- # Transform deplibs into only deplibs that can be linked in shared.
- name_save=$name
- libname_save=$libname
- release_save=$release
- versuffix_save=$versuffix
- major_save=$major
- # I'm not sure if I'm treating the release correctly. I think
- # release should show up in the -l (ie -lgmp5) so we don't want to
- # add it in twice. Is that correct?
- release=""
- versuffix=""
- major=""
- newdeplibs=
- droppeddeps=no
- case $deplibs_check_method in
- pass_all)
- # Don't check for shared/static. Everything works.
- # This might be a little naive. We might want to check
- # whether the library exists or not. But this is on
- # osf3 & osf4 and I'm not really sure... Just
- # implementing what was already the behavior.
- newdeplibs=$deplibs
- ;;
- test_compile)
- # This code stresses the "libraries are programs" paradigm to its
- # limits. Maybe even breaks it. We compile a program, linking it
- # against the deplibs as a proxy for the library. Then we can check
- # whether they linked in statically or dynamically with ldd.
- $opt_dry_run || $RM conftest.c
- cat > conftest.c <<EOF
- int main() { return 0; }
-EOF
- $opt_dry_run || $RM conftest
- if $LTCC $LTCFLAGS -o conftest conftest.c $deplibs; then
- ldd_output=`ldd conftest`
- for i in $deplibs; do
- case $i in
- -l*)
- func_stripname -l '' "$i"
- name=$func_stripname_result
- if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
- case " $predeps $postdeps " in
- *" $i "*)
- func_append newdeplibs " $i"
- i=""
- ;;
- esac
- fi
- if test -n "$i" ; then
- libname=`eval "\\$ECHO \"$libname_spec\""`
- deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
- set dummy $deplib_matches; shift
- deplib_match=$1
- if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
- func_append newdeplibs " $i"
- else
- droppeddeps=yes
- echo
- $ECHO "*** Warning: dynamic linker does not accept needed library $i."
- echo "*** I have the capability to make that library automatically link in when"
- echo "*** you link to this library. But I can only do this if you have a"
- echo "*** shared version of the library, which I believe you do not have"
- echo "*** because a test_compile did reveal that the linker did not use it for"
- echo "*** its dynamic dependency list that programs get resolved with at runtime."
- fi
- fi
- ;;
- *)
- func_append newdeplibs " $i"
- ;;
- esac
- done
- else
- # Error occurred in the first compile. Let's try to salvage
- # the situation: Compile a separate program for each library.
- for i in $deplibs; do
- case $i in
- -l*)
- func_stripname -l '' "$i"
- name=$func_stripname_result
- $opt_dry_run || $RM conftest
- if $LTCC $LTCFLAGS -o conftest conftest.c $i; then
- ldd_output=`ldd conftest`
- if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
- case " $predeps $postdeps " in
- *" $i "*)
- func_append newdeplibs " $i"
- i=""
- ;;
- esac
- fi
- if test -n "$i" ; then
- libname=`eval "\\$ECHO \"$libname_spec\""`
- deplib_matches=`eval "\\$ECHO \"$library_names_spec\""`
- set dummy $deplib_matches; shift
- deplib_match=$1
- if test `expr "$ldd_output" : ".*$deplib_match"` -ne 0 ; then
- func_append newdeplibs " $i"
- else
- droppeddeps=yes
- echo
- $ECHO "*** Warning: dynamic linker does not accept needed library $i."
- echo "*** I have the capability to make that library automatically link in when"
- echo "*** you link to this library. But I can only do this if you have a"
- echo "*** shared version of the library, which you do not appear to have"
- echo "*** because a test_compile did reveal that the linker did not use this one"
- echo "*** as a dynamic dependency that programs can get resolved with at runtime."
- fi
- fi
- else
- droppeddeps=yes
- echo
- $ECHO "*** Warning! Library $i is needed by this library but I was not able to"
- echo "*** make it link in! You will probably need to install it or some"
- echo "*** library that it depends on before this library will be fully"
- echo "*** functional. Installing it before continuing would be even better."
- fi
- ;;
- *)
- func_append newdeplibs " $i"
- ;;
- esac
- done
- fi
- ;;
- file_magic*)
- set dummy $deplibs_check_method; shift
- file_magic_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
- for a_deplib in $deplibs; do
- case $a_deplib in
- -l*)
- func_stripname -l '' "$a_deplib"
- name=$func_stripname_result
- if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
- case " $predeps $postdeps " in
- *" $a_deplib "*)
- func_append newdeplibs " $a_deplib"
- a_deplib=""
- ;;
- esac
- fi
- if test -n "$a_deplib" ; then
- libname=`eval "\\$ECHO \"$libname_spec\""`
- if test -n "$file_magic_glob"; then
- libnameglob=`func_echo_all "$libname" | $SED -e $file_magic_glob`
- else
- libnameglob=$libname
- fi
- test "$want_nocaseglob" = yes && nocaseglob=`shopt -p nocaseglob`
- for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
- if test "$want_nocaseglob" = yes; then
- shopt -s nocaseglob
- potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null`
- $nocaseglob
- else
- potential_libs=`ls $i/$libnameglob[.-]* 2>/dev/null`
- fi
- for potent_lib in $potential_libs; do
- # Follow soft links.
- if ls -lLd "$potent_lib" 2>/dev/null |
- $GREP " -> " >/dev/null; then
- continue
- fi
- # The statement above tries to avoid entering an
- # endless loop below, in case of cyclic links.
- # We might still enter an endless loop, since a link
- # loop can be closed while we follow links,
- # but so what?
- potlib="$potent_lib"
- while test -h "$potlib" 2>/dev/null; do
- potliblink=`ls -ld $potlib | ${SED} 's/.* -> //'`
- case $potliblink in
- [\\/]* | [A-Za-z]:[\\/]*) potlib="$potliblink";;
- *) potlib=`$ECHO "$potlib" | $SED 's,[^/]*$,,'`"$potliblink";;
- esac
- done
- if eval $file_magic_cmd \"\$potlib\" 2>/dev/null |
- $SED -e 10q |
- $EGREP "$file_magic_regex" > /dev/null; then
- func_append newdeplibs " $a_deplib"
- a_deplib=""
- break 2
- fi
- done
- done
- fi
- if test -n "$a_deplib" ; then
- droppeddeps=yes
- echo
- $ECHO "*** Warning: linker path does not have real file for library $a_deplib."
- echo "*** I have the capability to make that library automatically link in when"
- echo "*** you link to this library. But I can only do this if you have a"
- echo "*** shared version of the library, which you do not appear to have"
- echo "*** because I did check the linker path looking for a file starting"
- if test -z "$potlib" ; then
- $ECHO "*** with $libname but no candidates were found. (...for file magic test)"
- else
- $ECHO "*** with $libname and none of the candidates passed a file format test"
- $ECHO "*** using a file magic. Last file checked: $potlib"
- fi
- fi
- ;;
- *)
- # Add a -L argument.
- func_append newdeplibs " $a_deplib"
- ;;
- esac
- done # Gone through all deplibs.
- ;;
- match_pattern*)
- set dummy $deplibs_check_method; shift
- match_pattern_regex=`expr "$deplibs_check_method" : "$1 \(.*\)"`
- for a_deplib in $deplibs; do
- case $a_deplib in
- -l*)
- func_stripname -l '' "$a_deplib"
- name=$func_stripname_result
- if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
- case " $predeps $postdeps " in
- *" $a_deplib "*)
- func_append newdeplibs " $a_deplib"
- a_deplib=""
- ;;
- esac
- fi
- if test -n "$a_deplib" ; then
- libname=`eval "\\$ECHO \"$libname_spec\""`
- for i in $lib_search_path $sys_lib_search_path $shlib_search_path; do
- potential_libs=`ls $i/$libname[.-]* 2>/dev/null`
- for potent_lib in $potential_libs; do
- potlib="$potent_lib" # see symlink-check above in file_magic test
- if eval "\$ECHO \"$potent_lib\"" 2>/dev/null | $SED 10q | \
- $EGREP "$match_pattern_regex" > /dev/null; then
- func_append newdeplibs " $a_deplib"
- a_deplib=""
- break 2
- fi
- done
- done
- fi
- if test -n "$a_deplib" ; then
- droppeddeps=yes
- echo
- $ECHO "*** Warning: linker path does not have real file for library $a_deplib."
- echo "*** I have the capability to make that library automatically link in when"
- echo "*** you link to this library. But I can only do this if you have a"
- echo "*** shared version of the library, which you do not appear to have"
- echo "*** because I did check the linker path looking for a file starting"
- if test -z "$potlib" ; then
- $ECHO "*** with $libname but no candidates were found. (...for regex pattern test)"
- else
- $ECHO "*** with $libname and none of the candidates passed a file format test"
- $ECHO "*** using a regex pattern. Last file checked: $potlib"
- fi
- fi
- ;;
- *)
- # Add a -L argument.
- func_append newdeplibs " $a_deplib"
- ;;
- esac
- done # Gone through all deplibs.
- ;;
- none | unknown | *)
- newdeplibs=""
- tmp_deplibs=`$ECHO " $deplibs" | $SED 's/ -lc$//; s/ -[LR][^ ]*//g'`
- if test "X$allow_libtool_libs_with_static_runtimes" = "Xyes" ; then
- for i in $predeps $postdeps ; do
- # can't use Xsed below, because $i might contain '/'
- tmp_deplibs=`$ECHO " $tmp_deplibs" | $SED "s,$i,,"`
- done
- fi
- case $tmp_deplibs in
- *[!\ \ ]*)
- echo
- if test "X$deplibs_check_method" = "Xnone"; then
- echo "*** Warning: inter-library dependencies are not supported in this platform."
- else
- echo "*** Warning: inter-library dependencies are not known to be supported."
- fi
- echo "*** All declared inter-library dependencies are being dropped."
- droppeddeps=yes
- ;;
- esac
- ;;
- esac
- versuffix=$versuffix_save
- major=$major_save
- release=$release_save
- libname=$libname_save
- name=$name_save
-
- case $host in
- *-*-rhapsody* | *-*-darwin1.[012])
- # On Rhapsody replace the C library with the System framework
- newdeplibs=`$ECHO " $newdeplibs" | $SED 's/ -lc / System.ltframework /'`
- ;;
- esac
-
- if test "$droppeddeps" = yes; then
- if test "$module" = yes; then
- echo
- echo "*** Warning: libtool could not satisfy all declared inter-library"
- $ECHO "*** dependencies of module $libname. Therefore, libtool will create"
- echo "*** a static module, that should work as long as the dlopening"
- echo "*** application is linked with the -dlopen flag."
- if test -z "$global_symbol_pipe"; then
- echo
- echo "*** However, this would only work if libtool was able to extract symbol"
- echo "*** lists from a program, using \`nm' or equivalent, but libtool could"
- echo "*** not find such a program. So, this module is probably useless."
- echo "*** \`nm' from GNU binutils and a full rebuild may help."
- fi
- if test "$build_old_libs" = no; then
- oldlibs="$output_objdir/$libname.$libext"
- build_libtool_libs=module
- build_old_libs=yes
- else
- build_libtool_libs=no
- fi
- else
- echo "*** The inter-library dependencies that have been dropped here will be"
- echo "*** automatically added whenever a program is linked with this library"
- echo "*** or is declared to -dlopen it."
-
- if test "$allow_undefined" = no; then
- echo
- echo "*** Since this library must not contain undefined symbols,"
- echo "*** because either the platform does not support them or"
- echo "*** it was explicitly requested with -no-undefined,"
- echo "*** libtool will only create a static version of it."
- if test "$build_old_libs" = no; then
- oldlibs="$output_objdir/$libname.$libext"
- build_libtool_libs=module
- build_old_libs=yes
- else
- build_libtool_libs=no
- fi
- fi
- fi
- fi
- # Done checking deplibs!
- deplibs=$newdeplibs
- fi
- # Time to change all our "foo.ltframework" stuff back to "-framework foo"
- case $host in
- *-*-darwin*)
- newdeplibs=`$ECHO " $newdeplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- deplibs=`$ECHO " $deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- ;;
- esac
-
- # move library search paths that coincide with paths to not yet
- # installed libraries to the beginning of the library search list
- new_libs=
- for path in $notinst_path; do
- case " $new_libs " in
- *" -L$path/$objdir "*) ;;
- *)
- case " $deplibs " in
- *" -L$path/$objdir "*)
- func_append new_libs " -L$path/$objdir" ;;
- esac
- ;;
- esac
- done
- for deplib in $deplibs; do
- case $deplib in
- -L*)
- case " $new_libs " in
- *" $deplib "*) ;;
- *) func_append new_libs " $deplib" ;;
- esac
- ;;
- *) func_append new_libs " $deplib" ;;
- esac
- done
- deplibs="$new_libs"
-
- # All the library-specific variables (install_libdir is set above).
- library_names=
- old_library=
- dlname=
-
- # Test again, we may have decided not to build it any more
- if test "$build_libtool_libs" = yes; then
- # Remove ${wl} instances when linking with ld.
- # FIXME: should test the right _cmds variable.
- case $archive_cmds in
- *\$LD\ *) wl= ;;
- esac
- if test "$hardcode_into_libs" = yes; then
- # Hardcode the library paths
- hardcode_libdirs=
- dep_rpath=
- rpath="$finalize_rpath"
- test "$opt_mode" != relink && rpath="$compile_rpath$rpath"
- for libdir in $rpath; do
- if test -n "$hardcode_libdir_flag_spec"; then
- if test -n "$hardcode_libdir_separator"; then
- func_replace_sysroot "$libdir"
- libdir=$func_replace_sysroot_result
- if test -z "$hardcode_libdirs"; then
- hardcode_libdirs="$libdir"
- else
- # Just accumulate the unique libdirs.
- case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
- *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
- ;;
- *)
- func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
- ;;
- esac
- fi
- else
- eval flag=\"$hardcode_libdir_flag_spec\"
- func_append dep_rpath " $flag"
- fi
- elif test -n "$runpath_var"; then
- case "$perm_rpath " in
- *" $libdir "*) ;;
- *) func_append perm_rpath " $libdir" ;;
- esac
- fi
- done
- # Substitute the hardcoded libdirs into the rpath.
- if test -n "$hardcode_libdir_separator" &&
- test -n "$hardcode_libdirs"; then
- libdir="$hardcode_libdirs"
- eval "dep_rpath=\"$hardcode_libdir_flag_spec\""
- fi
- if test -n "$runpath_var" && test -n "$perm_rpath"; then
- # We should set the runpath_var.
- rpath=
- for dir in $perm_rpath; do
- func_append rpath "$dir:"
- done
- eval "$runpath_var='$rpath\$$runpath_var'; export $runpath_var"
- fi
- test -n "$dep_rpath" && deplibs="$dep_rpath $deplibs"
- fi
-
- shlibpath="$finalize_shlibpath"
- test "$opt_mode" != relink && shlibpath="$compile_shlibpath$shlibpath"
- if test -n "$shlibpath"; then
- eval "$shlibpath_var='$shlibpath\$$shlibpath_var'; export $shlibpath_var"
- fi
-
- # Get the real and link names of the library.
- eval shared_ext=\"$shrext_cmds\"
- eval library_names=\"$library_names_spec\"
- set dummy $library_names
- shift
- realname="$1"
- shift
-
- if test -n "$soname_spec"; then
- eval soname=\"$soname_spec\"
- else
- soname="$realname"
- fi
- if test -z "$dlname"; then
- dlname=$soname
- fi
-
- lib="$output_objdir/$realname"
- linknames=
- for link
- do
- func_append linknames " $link"
- done
-
- # Use standard objects if they are pic
- test -z "$pic_flag" && libobjs=`$ECHO "$libobjs" | $SP2NL | $SED "$lo2o" | $NL2SP`
- test "X$libobjs" = "X " && libobjs=
-
- delfiles=
- if test -n "$export_symbols" && test -n "$include_expsyms"; then
- $opt_dry_run || cp "$export_symbols" "$output_objdir/$libname.uexp"
- export_symbols="$output_objdir/$libname.uexp"
- func_append delfiles " $export_symbols"
- fi
-
- orig_export_symbols=
- case $host_os in
- cygwin* | mingw* | cegcc*)
- if test -n "$export_symbols" && test -z "$export_symbols_regex"; then
- # exporting using user supplied symfile
- if test "x`$SED 1q $export_symbols`" != xEXPORTS; then
- # and it's NOT already a .def file. Must figure out
- # which of the given symbols are data symbols and tag
- # them as such. So, trigger use of export_symbols_cmds.
- # export_symbols gets reassigned inside the "prepare
- # the list of exported symbols" if statement, so the
- # include_expsyms logic still works.
- orig_export_symbols="$export_symbols"
- export_symbols=
- always_export_symbols=yes
- fi
- fi
- ;;
- esac
-
- # Prepare the list of exported symbols
- if test -z "$export_symbols"; then
- if test "$always_export_symbols" = yes || test -n "$export_symbols_regex"; then
- func_verbose "generating symbol list for \`$libname.la'"
- export_symbols="$output_objdir/$libname.exp"
- $opt_dry_run || $RM $export_symbols
- cmds=$export_symbols_cmds
- save_ifs="$IFS"; IFS='~'
- for cmd1 in $cmds; do
- IFS="$save_ifs"
- # Take the normal branch if the nm_file_list_spec branch
- # doesn't work or if tool conversion is not needed.
- case $nm_file_list_spec~$to_tool_file_cmd in
- *~func_convert_file_noop | *~func_convert_file_msys_to_w32 | ~*)
- try_normal_branch=yes
- eval cmd=\"$cmd1\"
- func_len " $cmd"
- len=$func_len_result
- ;;
- *)
- try_normal_branch=no
- ;;
- esac
- if test "$try_normal_branch" = yes \
- && { test "$len" -lt "$max_cmd_len" \
- || test "$max_cmd_len" -le -1; }
- then
- func_show_eval "$cmd" 'exit $?'
- skipped_export=false
- elif test -n "$nm_file_list_spec"; then
- func_basename "$output"
- output_la=$func_basename_result
- save_libobjs=$libobjs
- save_output=$output
- output=${output_objdir}/${output_la}.nm
- func_to_tool_file "$output"
- libobjs=$nm_file_list_spec$func_to_tool_file_result
- func_append delfiles " $output"
- func_verbose "creating $NM input file list: $output"
- for obj in $save_libobjs; do
- func_to_tool_file "$obj"
- $ECHO "$func_to_tool_file_result"
- done > "$output"
- eval cmd=\"$cmd1\"
- func_show_eval "$cmd" 'exit $?'
- output=$save_output
- libobjs=$save_libobjs
- skipped_export=false
- else
- # The command line is too long to execute in one step.
- func_verbose "using reloadable object file for export list..."
- skipped_export=:
- # Break out early, otherwise skipped_export may be
- # set to false by a later but shorter cmd.
- break
- fi
- done
- IFS="$save_ifs"
- if test -n "$export_symbols_regex" && test "X$skipped_export" != "X:"; then
- func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
- func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
- fi
- fi
- fi
-
- if test -n "$export_symbols" && test -n "$include_expsyms"; then
- tmp_export_symbols="$export_symbols"
- test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
- $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"'
- fi
-
- if test "X$skipped_export" != "X:" && test -n "$orig_export_symbols"; then
- # The given exports_symbols file has to be filtered, so filter it.
- func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
- # FIXME: $output_objdir/$libname.filter potentially contains lots of
- # 's' commands which not all seds can handle. GNU sed should be fine
- # though. Also, the filter scales superlinearly with the number of
- # global variables. join(1) would be nice here, but unfortunately
- # isn't a blessed tool.
- $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
- func_append delfiles " $export_symbols $output_objdir/$libname.filter"
- export_symbols=$output_objdir/$libname.def
- $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
- fi
-
- tmp_deplibs=
- for test_deplib in $deplibs; do
- case " $convenience " in
- *" $test_deplib "*) ;;
- *)
- func_append tmp_deplibs " $test_deplib"
- ;;
- esac
- done
- deplibs="$tmp_deplibs"
-
- if test -n "$convenience"; then
- if test -n "$whole_archive_flag_spec" &&
- test "$compiler_needs_object" = yes &&
- test -z "$libobjs"; then
- # extract the archives, so we have objects to list.
- # TODO: could optimize this to just extract one archive.
- whole_archive_flag_spec=
- fi
- if test -n "$whole_archive_flag_spec"; then
- save_libobjs=$libobjs
- eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
- test "X$libobjs" = "X " && libobjs=
- else
- gentop="$output_objdir/${outputname}x"
- func_append generated " $gentop"
-
- func_extract_archives $gentop $convenience
- func_append libobjs " $func_extract_archives_result"
- test "X$libobjs" = "X " && libobjs=
- fi
- fi
-
- if test "$thread_safe" = yes && test -n "$thread_safe_flag_spec"; then
- eval flag=\"$thread_safe_flag_spec\"
- func_append linker_flags " $flag"
- fi
-
- # Make a backup of the uninstalled library when relinking
- if test "$opt_mode" = relink; then
- $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}U && $MV $realname ${realname}U)' || exit $?
- fi
-
- # Do each of the archive commands.
- if test "$module" = yes && test -n "$module_cmds" ; then
- if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
- eval test_cmds=\"$module_expsym_cmds\"
- cmds=$module_expsym_cmds
- else
- eval test_cmds=\"$module_cmds\"
- cmds=$module_cmds
- fi
- else
- if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
- eval test_cmds=\"$archive_expsym_cmds\"
- cmds=$archive_expsym_cmds
- else
- eval test_cmds=\"$archive_cmds\"
- cmds=$archive_cmds
- fi
- fi
-
- if test "X$skipped_export" != "X:" &&
- func_len " $test_cmds" &&
- len=$func_len_result &&
- test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
- :
- else
- # The command line is too long to link in one step, link piecewise
- # or, if using GNU ld and skipped_export is not :, use a linker
- # script.
-
- # Save the value of $output and $libobjs because we want to
- # use them later. If we have whole_archive_flag_spec, we
- # want to use save_libobjs as it was before
- # whole_archive_flag_spec was expanded, because we can't
- # assume the linker understands whole_archive_flag_spec.
- # This may have to be revisited, in case too many
- # convenience libraries get linked in and end up exceeding
- # the spec.
- if test -z "$convenience" || test -z "$whole_archive_flag_spec"; then
- save_libobjs=$libobjs
- fi
- save_output=$output
- func_basename "$output"
- output_la=$func_basename_result
-
- # Clear the reloadable object creation command queue and
- # initialize k to one.
- test_cmds=
- concat_cmds=
- objlist=
- last_robj=
- k=1
-
- if test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "$with_gnu_ld" = yes; then
- output=${output_objdir}/${output_la}.lnkscript
- func_verbose "creating GNU ld script: $output"
- echo 'INPUT (' > $output
- for obj in $save_libobjs
- do
- func_to_tool_file "$obj"
- $ECHO "$func_to_tool_file_result" >> $output
- done
- echo ')' >> $output
- func_append delfiles " $output"
- func_to_tool_file "$output"
- output=$func_to_tool_file_result
- elif test -n "$save_libobjs" && test "X$skipped_export" != "X:" && test "X$file_list_spec" != X; then
- output=${output_objdir}/${output_la}.lnk
- func_verbose "creating linker input file list: $output"
- : > $output
- set x $save_libobjs
- shift
- firstobj=
- if test "$compiler_needs_object" = yes; then
- firstobj="$1 "
- shift
- fi
- for obj
- do
- func_to_tool_file "$obj"
- $ECHO "$func_to_tool_file_result" >> $output
- done
- func_append delfiles " $output"
- func_to_tool_file "$output"
- output=$firstobj\"$file_list_spec$func_to_tool_file_result\"
- else
- if test -n "$save_libobjs"; then
- func_verbose "creating reloadable object files..."
- output=$output_objdir/$output_la-${k}.$objext
- eval test_cmds=\"$reload_cmds\"
- func_len " $test_cmds"
- len0=$func_len_result
- len=$len0
-
- # Loop over the list of objects to be linked.
- for obj in $save_libobjs
- do
- func_len " $obj"
- func_arith $len + $func_len_result
- len=$func_arith_result
- if test "X$objlist" = X ||
- test "$len" -lt "$max_cmd_len"; then
- func_append objlist " $obj"
- else
- # The command $test_cmds is almost too long, add a
- # command to the queue.
- if test "$k" -eq 1 ; then
- # The first file doesn't have a previous command to add.
- reload_objs=$objlist
- eval concat_cmds=\"$reload_cmds\"
- else
- # All subsequent reloadable object files will link in
- # the last one created.
- reload_objs="$objlist $last_robj"
- eval concat_cmds=\"\$concat_cmds~$reload_cmds~\$RM $last_robj\"
- fi
- last_robj=$output_objdir/$output_la-${k}.$objext
- func_arith $k + 1
- k=$func_arith_result
- output=$output_objdir/$output_la-${k}.$objext
- objlist=" $obj"
- func_len " $last_robj"
- func_arith $len0 + $func_len_result
- len=$func_arith_result
- fi
- done
- # Handle the remaining objects by creating one last
- # reloadable object file. All subsequent reloadable object
- # files will link in the last one created.
- test -z "$concat_cmds" || concat_cmds=$concat_cmds~
- reload_objs="$objlist $last_robj"
- eval concat_cmds=\"\${concat_cmds}$reload_cmds\"
- if test -n "$last_robj"; then
- eval concat_cmds=\"\${concat_cmds}~\$RM $last_robj\"
- fi
- func_append delfiles " $output"
-
- else
- output=
- fi
-
- if ${skipped_export-false}; then
- func_verbose "generating symbol list for \`$libname.la'"
- export_symbols="$output_objdir/$libname.exp"
- $opt_dry_run || $RM $export_symbols
- libobjs=$output
- # Append the command to create the export file.
- test -z "$concat_cmds" || concat_cmds=$concat_cmds~
- eval concat_cmds=\"\$concat_cmds$export_symbols_cmds\"
- if test -n "$last_robj"; then
- eval concat_cmds=\"\$concat_cmds~\$RM $last_robj\"
- fi
- fi
-
- test -n "$save_libobjs" &&
- func_verbose "creating a temporary reloadable object file: $output"
-
- # Loop through the commands generated above and execute them.
- save_ifs="$IFS"; IFS='~'
- for cmd in $concat_cmds; do
- IFS="$save_ifs"
- $opt_silent || {
- func_quote_for_expand "$cmd"
- eval "func_echo $func_quote_for_expand_result"
- }
- $opt_dry_run || eval "$cmd" || {
- lt_exit=$?
-
- # Restore the uninstalled library and exit
- if test "$opt_mode" = relink; then
- ( cd "$output_objdir" && \
- $RM "${realname}T" && \
- $MV "${realname}U" "$realname" )
- fi
-
- exit $lt_exit
- }
- done
- IFS="$save_ifs"
-
- if test -n "$export_symbols_regex" && ${skipped_export-false}; then
- func_show_eval '$EGREP -e "$export_symbols_regex" "$export_symbols" > "${export_symbols}T"'
- func_show_eval '$MV "${export_symbols}T" "$export_symbols"'
- fi
- fi
-
- if ${skipped_export-false}; then
- if test -n "$export_symbols" && test -n "$include_expsyms"; then
- tmp_export_symbols="$export_symbols"
- test -n "$orig_export_symbols" && tmp_export_symbols="$orig_export_symbols"
- $opt_dry_run || eval '$ECHO "$include_expsyms" | $SP2NL >> "$tmp_export_symbols"'
- fi
-
- if test -n "$orig_export_symbols"; then
- # The given exports_symbols file has to be filtered, so filter it.
- func_verbose "filter symbol list for \`$libname.la' to tag DATA exports"
- # FIXME: $output_objdir/$libname.filter potentially contains lots of
- # 's' commands which not all seds can handle. GNU sed should be fine
- # though. Also, the filter scales superlinearly with the number of
- # global variables. join(1) would be nice here, but unfortunately
- # isn't a blessed tool.
- $opt_dry_run || $SED -e '/[ ,]DATA/!d;s,\(.*\)\([ \,].*\),s|^\1$|\1\2|,' < $export_symbols > $output_objdir/$libname.filter
- func_append delfiles " $export_symbols $output_objdir/$libname.filter"
- export_symbols=$output_objdir/$libname.def
- $opt_dry_run || $SED -f $output_objdir/$libname.filter < $orig_export_symbols > $export_symbols
- fi
- fi
-
- libobjs=$output
- # Restore the value of output.
- output=$save_output
-
- if test -n "$convenience" && test -n "$whole_archive_flag_spec"; then
- eval libobjs=\"\$libobjs $whole_archive_flag_spec\"
- test "X$libobjs" = "X " && libobjs=
- fi
- # Expand the library linking commands again to reset the
- # value of $libobjs for piecewise linking.
-
- # Do each of the archive commands.
- if test "$module" = yes && test -n "$module_cmds" ; then
- if test -n "$export_symbols" && test -n "$module_expsym_cmds"; then
- cmds=$module_expsym_cmds
- else
- cmds=$module_cmds
- fi
- else
- if test -n "$export_symbols" && test -n "$archive_expsym_cmds"; then
- cmds=$archive_expsym_cmds
- else
- cmds=$archive_cmds
- fi
- fi
- fi
-
- if test -n "$delfiles"; then
- # Append the command to remove temporary files to $cmds.
- eval cmds=\"\$cmds~\$RM $delfiles\"
- fi
-
- # Add any objects from preloaded convenience libraries
- if test -n "$dlprefiles"; then
- gentop="$output_objdir/${outputname}x"
- func_append generated " $gentop"
-
- func_extract_archives $gentop $dlprefiles
- func_append libobjs " $func_extract_archives_result"
- test "X$libobjs" = "X " && libobjs=
- fi
-
- save_ifs="$IFS"; IFS='~'
- for cmd in $cmds; do
- IFS="$save_ifs"
- eval cmd=\"$cmd\"
- $opt_silent || {
- func_quote_for_expand "$cmd"
- eval "func_echo $func_quote_for_expand_result"
- }
- $opt_dry_run || eval "$cmd" || {
- lt_exit=$?
-
- # Restore the uninstalled library and exit
- if test "$opt_mode" = relink; then
- ( cd "$output_objdir" && \
- $RM "${realname}T" && \
- $MV "${realname}U" "$realname" )
- fi
-
- exit $lt_exit
- }
- done
- IFS="$save_ifs"
-
- # Restore the uninstalled library and exit
- if test "$opt_mode" = relink; then
- $opt_dry_run || eval '(cd $output_objdir && $RM ${realname}T && $MV $realname ${realname}T && $MV ${realname}U $realname)' || exit $?
-
- if test -n "$convenience"; then
- if test -z "$whole_archive_flag_spec"; then
- func_show_eval '${RM}r "$gentop"'
- fi
- fi
-
- exit $EXIT_SUCCESS
- fi
-
- # Create links to the real library.
- for linkname in $linknames; do
- if test "$realname" != "$linkname"; then
- func_show_eval '(cd "$output_objdir" && $RM "$linkname" && $LN_S "$realname" "$linkname")' 'exit $?'
- fi
- done
-
- # If -module or -export-dynamic was specified, set the dlname.
- if test "$module" = yes || test "$export_dynamic" = yes; then
- # On all known operating systems, these are identical.
- dlname="$soname"
- fi
- fi
- ;;
-
- obj)
- if test -n "$dlfiles$dlprefiles" || test "$dlself" != no; then
- func_warning "\`-dlopen' is ignored for objects"
- fi
-
- case " $deplibs" in
- *\ -l* | *\ -L*)
- func_warning "\`-l' and \`-L' are ignored for objects" ;;
- esac
-
- test -n "$rpath" && \
- func_warning "\`-rpath' is ignored for objects"
-
- test -n "$xrpath" && \
- func_warning "\`-R' is ignored for objects"
-
- test -n "$vinfo" && \
- func_warning "\`-version-info' is ignored for objects"
-
- test -n "$release" && \
- func_warning "\`-release' is ignored for objects"
-
- case $output in
- *.lo)
- test -n "$objs$old_deplibs" && \
- func_fatal_error "cannot build library object \`$output' from non-libtool objects"
-
- libobj=$output
- func_lo2o "$libobj"
- obj=$func_lo2o_result
- ;;
- *)
- libobj=
- obj="$output"
- ;;
- esac
-
- # Delete the old objects.
- $opt_dry_run || $RM $obj $libobj
-
- # Objects from convenience libraries. This assumes
- # single-version convenience libraries. Whenever we create
- # different ones for PIC/non-PIC, this we'll have to duplicate
- # the extraction.
- reload_conv_objs=
- gentop=
- # reload_cmds runs $LD directly, so let us get rid of
- # -Wl from whole_archive_flag_spec and hope we can get by with
- # turning comma into space..
- wl=
-
- if test -n "$convenience"; then
- if test -n "$whole_archive_flag_spec"; then
- eval tmp_whole_archive_flags=\"$whole_archive_flag_spec\"
- reload_conv_objs=$reload_objs\ `$ECHO "$tmp_whole_archive_flags" | $SED 's|,| |g'`
- else
- gentop="$output_objdir/${obj}x"
- func_append generated " $gentop"
-
- func_extract_archives $gentop $convenience
- reload_conv_objs="$reload_objs $func_extract_archives_result"
- fi
- fi
-
- # If we're not building shared, we need to use non_pic_objs
- test "$build_libtool_libs" != yes && libobjs="$non_pic_objects"
-
- # Create the old-style object.
- reload_objs="$objs$old_deplibs "`$ECHO "$libobjs" | $SP2NL | $SED "/\.${libext}$/d; /\.lib$/d; $lo2o" | $NL2SP`" $reload_conv_objs" ### testsuite: skip nested quoting test
-
- output="$obj"
- func_execute_cmds "$reload_cmds" 'exit $?'
-
- # Exit if we aren't doing a library object file.
- if test -z "$libobj"; then
- if test -n "$gentop"; then
- func_show_eval '${RM}r "$gentop"'
- fi
-
- exit $EXIT_SUCCESS
- fi
-
- if test "$build_libtool_libs" != yes; then
- if test -n "$gentop"; then
- func_show_eval '${RM}r "$gentop"'
- fi
-
- # Create an invalid libtool object if no PIC, so that we don't
- # accidentally link it into a program.
- # $show "echo timestamp > $libobj"
- # $opt_dry_run || eval "echo timestamp > $libobj" || exit $?
- exit $EXIT_SUCCESS
- fi
-
- if test -n "$pic_flag" || test "$pic_mode" != default; then
- # Only do commands if we really have different PIC objects.
- reload_objs="$libobjs $reload_conv_objs"
- output="$libobj"
- func_execute_cmds "$reload_cmds" 'exit $?'
- fi
-
- if test -n "$gentop"; then
- func_show_eval '${RM}r "$gentop"'
- fi
-
- exit $EXIT_SUCCESS
- ;;
-
- prog)
- case $host in
- *cygwin*) func_stripname '' '.exe' "$output"
- output=$func_stripname_result.exe;;
- esac
- test -n "$vinfo" && \
- func_warning "\`-version-info' is ignored for programs"
-
- test -n "$release" && \
- func_warning "\`-release' is ignored for programs"
-
- test "$preload" = yes \
- && test "$dlopen_support" = unknown \
- && test "$dlopen_self" = unknown \
- && test "$dlopen_self_static" = unknown && \
- func_warning "\`LT_INIT([dlopen])' not used. Assuming no dlopen support."
-
- case $host in
- *-*-rhapsody* | *-*-darwin1.[012])
- # On Rhapsody replace the C library is the System framework
- compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's/ -lc / System.ltframework /'`
- finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's/ -lc / System.ltframework /'`
- ;;
- esac
-
- case $host in
- *-*-darwin*)
- # Don't allow lazy linking, it breaks C++ global constructors
- # But is supposedly fixed on 10.4 or later (yay!).
- if test "$tagname" = CXX ; then
- case ${MACOSX_DEPLOYMENT_TARGET-10.0} in
- 10.[0123])
- func_append compile_command " ${wl}-bind_at_load"
- func_append finalize_command " ${wl}-bind_at_load"
- ;;
- esac
- fi
- # Time to change all our "foo.ltframework" stuff back to "-framework foo"
- compile_deplibs=`$ECHO " $compile_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- finalize_deplibs=`$ECHO " $finalize_deplibs" | $SED 's% \([^ $]*\).ltframework% -framework \1%g'`
- ;;
- esac
-
-
- # move library search paths that coincide with paths to not yet
- # installed libraries to the beginning of the library search list
- new_libs=
- for path in $notinst_path; do
- case " $new_libs " in
- *" -L$path/$objdir "*) ;;
- *)
- case " $compile_deplibs " in
- *" -L$path/$objdir "*)
- func_append new_libs " -L$path/$objdir" ;;
- esac
- ;;
- esac
- done
- for deplib in $compile_deplibs; do
- case $deplib in
- -L*)
- case " $new_libs " in
- *" $deplib "*) ;;
- *) func_append new_libs " $deplib" ;;
- esac
- ;;
- *) func_append new_libs " $deplib" ;;
- esac
- done
- compile_deplibs="$new_libs"
-
-
- func_append compile_command " $compile_deplibs"
- func_append finalize_command " $finalize_deplibs"
-
- if test -n "$rpath$xrpath"; then
- # If the user specified any rpath flags, then add them.
- for libdir in $rpath $xrpath; do
- # This is the magic to use -rpath.
- case "$finalize_rpath " in
- *" $libdir "*) ;;
- *) func_append finalize_rpath " $libdir" ;;
- esac
- done
- fi
-
- # Now hardcode the library paths
- rpath=
- hardcode_libdirs=
- for libdir in $compile_rpath $finalize_rpath; do
- if test -n "$hardcode_libdir_flag_spec"; then
- if test -n "$hardcode_libdir_separator"; then
- if test -z "$hardcode_libdirs"; then
- hardcode_libdirs="$libdir"
- else
- # Just accumulate the unique libdirs.
- case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
- *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
- ;;
- *)
- func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
- ;;
- esac
- fi
- else
- eval flag=\"$hardcode_libdir_flag_spec\"
- func_append rpath " $flag"
- fi
- elif test -n "$runpath_var"; then
- case "$perm_rpath " in
- *" $libdir "*) ;;
- *) func_append perm_rpath " $libdir" ;;
- esac
- fi
- case $host in
- *-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-os2* | *-cegcc*)
- testbindir=`${ECHO} "$libdir" | ${SED} -e 's*/lib$*/bin*'`
- case :$dllsearchpath: in
- *":$libdir:"*) ;;
- ::) dllsearchpath=$libdir;;
- *) func_append dllsearchpath ":$libdir";;
- esac
- case :$dllsearchpath: in
- *":$testbindir:"*) ;;
- ::) dllsearchpath=$testbindir;;
- *) func_append dllsearchpath ":$testbindir";;
- esac
- ;;
- esac
- done
- # Substitute the hardcoded libdirs into the rpath.
- if test -n "$hardcode_libdir_separator" &&
- test -n "$hardcode_libdirs"; then
- libdir="$hardcode_libdirs"
- eval rpath=\" $hardcode_libdir_flag_spec\"
- fi
- compile_rpath="$rpath"
-
- rpath=
- hardcode_libdirs=
- for libdir in $finalize_rpath; do
- if test -n "$hardcode_libdir_flag_spec"; then
- if test -n "$hardcode_libdir_separator"; then
- if test -z "$hardcode_libdirs"; then
- hardcode_libdirs="$libdir"
- else
- # Just accumulate the unique libdirs.
- case $hardcode_libdir_separator$hardcode_libdirs$hardcode_libdir_separator in
- *"$hardcode_libdir_separator$libdir$hardcode_libdir_separator"*)
- ;;
- *)
- func_append hardcode_libdirs "$hardcode_libdir_separator$libdir"
- ;;
- esac
- fi
- else
- eval flag=\"$hardcode_libdir_flag_spec\"
- func_append rpath " $flag"
- fi
- elif test -n "$runpath_var"; then
- case "$finalize_perm_rpath " in
- *" $libdir "*) ;;
- *) func_append finalize_perm_rpath " $libdir" ;;
- esac
- fi
- done
- # Substitute the hardcoded libdirs into the rpath.
- if test -n "$hardcode_libdir_separator" &&
- test -n "$hardcode_libdirs"; then
- libdir="$hardcode_libdirs"
- eval rpath=\" $hardcode_libdir_flag_spec\"
- fi
- finalize_rpath="$rpath"
-
- if test -n "$libobjs" && test "$build_old_libs" = yes; then
- # Transform all the library objects into standard objects.
- compile_command=`$ECHO "$compile_command" | $SP2NL | $SED "$lo2o" | $NL2SP`
- finalize_command=`$ECHO "$finalize_command" | $SP2NL | $SED "$lo2o" | $NL2SP`
- fi
-
- func_generate_dlsyms "$outputname" "@PROGRAM@" "no"
-
- # template prelinking step
- if test -n "$prelink_cmds"; then
- func_execute_cmds "$prelink_cmds" 'exit $?'
- fi
-
- wrappers_required=yes
- case $host in
- *cegcc* | *mingw32ce*)
- # Disable wrappers for cegcc and mingw32ce hosts, we are cross compiling anyway.
- wrappers_required=no
- ;;
- *cygwin* | *mingw* )
- if test "$build_libtool_libs" != yes; then
- wrappers_required=no
- fi
- ;;
- *)
- if test "$need_relink" = no || test "$build_libtool_libs" != yes; then
- wrappers_required=no
- fi
- ;;
- esac
- if test "$wrappers_required" = no; then
- # Replace the output file specification.
- compile_command=`$ECHO "$compile_command" | $SED 's%@OUTPUT@%'"$output"'%g'`
- link_command="$compile_command$compile_rpath"
-
- # We have no uninstalled library dependencies, so finalize right now.
- exit_status=0
- func_show_eval "$link_command" 'exit_status=$?'
-
- if test -n "$postlink_cmds"; then
- func_to_tool_file "$output"
- postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
- func_execute_cmds "$postlink_cmds" 'exit $?'
- fi
-
- # Delete the generated files.
- if test -f "$output_objdir/${outputname}S.${objext}"; then
- func_show_eval '$RM "$output_objdir/${outputname}S.${objext}"'
- fi
-
- exit $exit_status
- fi
-
- if test -n "$compile_shlibpath$finalize_shlibpath"; then
- compile_command="$shlibpath_var=\"$compile_shlibpath$finalize_shlibpath\$$shlibpath_var\" $compile_command"
- fi
- if test -n "$finalize_shlibpath"; then
- finalize_command="$shlibpath_var=\"$finalize_shlibpath\$$shlibpath_var\" $finalize_command"
- fi
-
- compile_var=
- finalize_var=
- if test -n "$runpath_var"; then
- if test -n "$perm_rpath"; then
- # We should set the runpath_var.
- rpath=
- for dir in $perm_rpath; do
- func_append rpath "$dir:"
- done
- compile_var="$runpath_var=\"$rpath\$$runpath_var\" "
- fi
- if test -n "$finalize_perm_rpath"; then
- # We should set the runpath_var.
- rpath=
- for dir in $finalize_perm_rpath; do
- func_append rpath "$dir:"
- done
- finalize_var="$runpath_var=\"$rpath\$$runpath_var\" "
- fi
- fi
-
- if test "$no_install" = yes; then
- # We don't need to create a wrapper script.
- link_command="$compile_var$compile_command$compile_rpath"
- # Replace the output file specification.
- link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output"'%g'`
- # Delete the old output file.
- $opt_dry_run || $RM $output
- # Link the executable and exit
- func_show_eval "$link_command" 'exit $?'
-
- if test -n "$postlink_cmds"; then
- func_to_tool_file "$output"
- postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
- func_execute_cmds "$postlink_cmds" 'exit $?'
- fi
-
- exit $EXIT_SUCCESS
- fi
-
- if test "$hardcode_action" = relink; then
- # Fast installation is not supported
- link_command="$compile_var$compile_command$compile_rpath"
- relink_command="$finalize_var$finalize_command$finalize_rpath"
-
- func_warning "this platform does not like uninstalled shared libraries"
- func_warning "\`$output' will be relinked during installation"
- else
- if test "$fast_install" != no; then
- link_command="$finalize_var$compile_command$finalize_rpath"
- if test "$fast_install" = yes; then
- relink_command=`$ECHO "$compile_var$compile_command$compile_rpath" | $SED 's%@OUTPUT@%\$progdir/\$file%g'`
- else
- # fast_install is set to needless
- relink_command=
- fi
- else
- link_command="$compile_var$compile_command$compile_rpath"
- relink_command="$finalize_var$finalize_command$finalize_rpath"
- fi
- fi
-
- # Replace the output file specification.
- link_command=`$ECHO "$link_command" | $SED 's%@OUTPUT@%'"$output_objdir/$outputname"'%g'`
-
- # Delete the old output files.
- $opt_dry_run || $RM $output $output_objdir/$outputname $output_objdir/lt-$outputname
-
- func_show_eval "$link_command" 'exit $?'
-
- if test -n "$postlink_cmds"; then
- func_to_tool_file "$output_objdir/$outputname"
- postlink_cmds=`func_echo_all "$postlink_cmds" | $SED -e 's%@OUTPUT@%'"$output_objdir/$outputname"'%g' -e 's%@TOOL_OUTPUT@%'"$func_to_tool_file_result"'%g'`
- func_execute_cmds "$postlink_cmds" 'exit $?'
- fi
-
- # Now create the wrapper script.
- func_verbose "creating $output"
-
- # Quote the relink command for shipping.
- if test -n "$relink_command"; then
- # Preserve any variables that may affect compiler behavior
- for var in $variables_saved_for_relink; do
- if eval test -z \"\${$var+set}\"; then
- relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
- elif eval var_value=\$$var; test -z "$var_value"; then
- relink_command="$var=; export $var; $relink_command"
- else
- func_quote_for_eval "$var_value"
- relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
- fi
- done
- relink_command="(cd `pwd`; $relink_command)"
- relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
- fi
-
- # Only actually do things if not in dry run mode.
- $opt_dry_run || {
- # win32 will think the script is a binary if it has
- # a .exe suffix, so we strip it off here.
- case $output in
- *.exe) func_stripname '' '.exe' "$output"
- output=$func_stripname_result ;;
- esac
- # test for cygwin because mv fails w/o .exe extensions
- case $host in
- *cygwin*)
- exeext=.exe
- func_stripname '' '.exe' "$outputname"
- outputname=$func_stripname_result ;;
- *) exeext= ;;
- esac
- case $host in
- *cygwin* | *mingw* )
- func_dirname_and_basename "$output" "" "."
- output_name=$func_basename_result
- output_path=$func_dirname_result
- cwrappersource="$output_path/$objdir/lt-$output_name.c"
- cwrapper="$output_path/$output_name.exe"
- $RM $cwrappersource $cwrapper
- trap "$RM $cwrappersource $cwrapper; exit $EXIT_FAILURE" 1 2 15
-
- func_emit_cwrapperexe_src > $cwrappersource
-
- # The wrapper executable is built using the $host compiler,
- # because it contains $host paths and files. If cross-
- # compiling, it, like the target executable, must be
- # executed on the $host or under an emulation environment.
- $opt_dry_run || {
- $LTCC $LTCFLAGS -o $cwrapper $cwrappersource
- $STRIP $cwrapper
- }
-
- # Now, create the wrapper script for func_source use:
- func_ltwrapper_scriptname $cwrapper
- $RM $func_ltwrapper_scriptname_result
- trap "$RM $func_ltwrapper_scriptname_result; exit $EXIT_FAILURE" 1 2 15
- $opt_dry_run || {
- # note: this script will not be executed, so do not chmod.
- if test "x$build" = "x$host" ; then
- $cwrapper --lt-dump-script > $func_ltwrapper_scriptname_result
- else
- func_emit_wrapper no > $func_ltwrapper_scriptname_result
- fi
- }
- ;;
- * )
- $RM $output
- trap "$RM $output; exit $EXIT_FAILURE" 1 2 15
-
- func_emit_wrapper no > $output
- chmod +x $output
- ;;
- esac
- }
- exit $EXIT_SUCCESS
- ;;
- esac
-
- # See if we need to build an old-fashioned archive.
- for oldlib in $oldlibs; do
-
- if test "$build_libtool_libs" = convenience; then
- oldobjs="$libobjs_save $symfileobj"
- addlibs="$convenience"
- build_libtool_libs=no
- else
- if test "$build_libtool_libs" = module; then
- oldobjs="$libobjs_save"
- build_libtool_libs=no
- else
- oldobjs="$old_deplibs $non_pic_objects"
- if test "$preload" = yes && test -f "$symfileobj"; then
- func_append oldobjs " $symfileobj"
- fi
- fi
- addlibs="$old_convenience"
- fi
-
- if test -n "$addlibs"; then
- gentop="$output_objdir/${outputname}x"
- func_append generated " $gentop"
-
- func_extract_archives $gentop $addlibs
- func_append oldobjs " $func_extract_archives_result"
- fi
-
- # Do each command in the archive commands.
- if test -n "$old_archive_from_new_cmds" && test "$build_libtool_libs" = yes; then
- cmds=$old_archive_from_new_cmds
- else
-
- # Add any objects from preloaded convenience libraries
- if test -n "$dlprefiles"; then
- gentop="$output_objdir/${outputname}x"
- func_append generated " $gentop"
-
- func_extract_archives $gentop $dlprefiles
- func_append oldobjs " $func_extract_archives_result"
- fi
-
- # POSIX demands no paths to be encoded in archives. We have
- # to avoid creating archives with duplicate basenames if we
- # might have to extract them afterwards, e.g., when creating a
- # static archive out of a convenience library, or when linking
- # the entirety of a libtool archive into another (currently
- # not supported by libtool).
- if (for obj in $oldobjs
- do
- func_basename "$obj"
- $ECHO "$func_basename_result"
- done | sort | sort -uc >/dev/null 2>&1); then
- :
- else
- echo "copying selected object files to avoid basename conflicts..."
- gentop="$output_objdir/${outputname}x"
- func_append generated " $gentop"
- func_mkdir_p "$gentop"
- save_oldobjs=$oldobjs
- oldobjs=
- counter=1
- for obj in $save_oldobjs
- do
- func_basename "$obj"
- objbase="$func_basename_result"
- case " $oldobjs " in
- " ") oldobjs=$obj ;;
- *[\ /]"$objbase "*)
- while :; do
- # Make sure we don't pick an alternate name that also
- # overlaps.
- newobj=lt$counter-$objbase
- func_arith $counter + 1
- counter=$func_arith_result
- case " $oldobjs " in
- *[\ /]"$newobj "*) ;;
- *) if test ! -f "$gentop/$newobj"; then break; fi ;;
- esac
- done
- func_show_eval "ln $obj $gentop/$newobj || cp $obj $gentop/$newobj"
- func_append oldobjs " $gentop/$newobj"
- ;;
- *) func_append oldobjs " $obj" ;;
- esac
- done
- fi
- func_to_tool_file "$oldlib" func_convert_file_msys_to_w32
- tool_oldlib=$func_to_tool_file_result
- eval cmds=\"$old_archive_cmds\"
-
- func_len " $cmds"
- len=$func_len_result
- if test "$len" -lt "$max_cmd_len" || test "$max_cmd_len" -le -1; then
- cmds=$old_archive_cmds
- elif test -n "$archiver_list_spec"; then
- func_verbose "using command file archive linking..."
- for obj in $oldobjs
- do
- func_to_tool_file "$obj"
- $ECHO "$func_to_tool_file_result"
- done > $output_objdir/$libname.libcmd
- func_to_tool_file "$output_objdir/$libname.libcmd"
- oldobjs=" $archiver_list_spec$func_to_tool_file_result"
- cmds=$old_archive_cmds
- else
- # the command line is too long to link in one step, link in parts
- func_verbose "using piecewise archive linking..."
- save_RANLIB=$RANLIB
- RANLIB=:
- objlist=
- concat_cmds=
- save_oldobjs=$oldobjs
- oldobjs=
- # Is there a better way of finding the last object in the list?
- for obj in $save_oldobjs
- do
- last_oldobj=$obj
- done
- eval test_cmds=\"$old_archive_cmds\"
- func_len " $test_cmds"
- len0=$func_len_result
- len=$len0
- for obj in $save_oldobjs
- do
- func_len " $obj"
- func_arith $len + $func_len_result
- len=$func_arith_result
- func_append objlist " $obj"
- if test "$len" -lt "$max_cmd_len"; then
- :
- else
- # the above command should be used before it gets too long
- oldobjs=$objlist
- if test "$obj" = "$last_oldobj" ; then
- RANLIB=$save_RANLIB
- fi
- test -z "$concat_cmds" || concat_cmds=$concat_cmds~
- eval concat_cmds=\"\${concat_cmds}$old_archive_cmds\"
- objlist=
- len=$len0
- fi
- done
- RANLIB=$save_RANLIB
- oldobjs=$objlist
- if test "X$oldobjs" = "X" ; then
- eval cmds=\"\$concat_cmds\"
- else
- eval cmds=\"\$concat_cmds~\$old_archive_cmds\"
- fi
- fi
- fi
- func_execute_cmds "$cmds" 'exit $?'
- done
-
- test -n "$generated" && \
- func_show_eval "${RM}r$generated"
-
- # Now create the libtool archive.
- case $output in
- *.la)
- old_library=
- test "$build_old_libs" = yes && old_library="$libname.$libext"
- func_verbose "creating $output"
-
- # Preserve any variables that may affect compiler behavior
- for var in $variables_saved_for_relink; do
- if eval test -z \"\${$var+set}\"; then
- relink_command="{ test -z \"\${$var+set}\" || $lt_unset $var || { $var=; export $var; }; }; $relink_command"
- elif eval var_value=\$$var; test -z "$var_value"; then
- relink_command="$var=; export $var; $relink_command"
- else
- func_quote_for_eval "$var_value"
- relink_command="$var=$func_quote_for_eval_result; export $var; $relink_command"
- fi
- done
- # Quote the link command for shipping.
- relink_command="(cd `pwd`; $SHELL $progpath $preserve_args --mode=relink $libtool_args @inst_prefix_dir@)"
- relink_command=`$ECHO "$relink_command" | $SED "$sed_quote_subst"`
- if test "$hardcode_automatic" = yes ; then
- relink_command=
- fi
-
- # Only create the output if not a dry run.
- $opt_dry_run || {
- for installed in no yes; do
- if test "$installed" = yes; then
- if test -z "$install_libdir"; then
- break
- fi
- output="$output_objdir/$outputname"i
- # Replace all uninstalled libtool libraries with the installed ones
- newdependency_libs=
- for deplib in $dependency_libs; do
- case $deplib in
- *.la)
- func_basename "$deplib"
- name="$func_basename_result"
- func_resolve_sysroot "$deplib"
- eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $func_resolve_sysroot_result`
- test -z "$libdir" && \
- func_fatal_error "\`$deplib' is not a valid libtool archive"
- func_append newdependency_libs " ${lt_sysroot:+=}$libdir/$name"
- ;;
- -L*)
- func_stripname -L '' "$deplib"
- func_replace_sysroot "$func_stripname_result"
- func_append newdependency_libs " -L$func_replace_sysroot_result"
- ;;
- -R*)
- func_stripname -R '' "$deplib"
- func_replace_sysroot "$func_stripname_result"
- func_append newdependency_libs " -R$func_replace_sysroot_result"
- ;;
- *) func_append newdependency_libs " $deplib" ;;
- esac
- done
- dependency_libs="$newdependency_libs"
- newdlfiles=
-
- for lib in $dlfiles; do
- case $lib in
- *.la)
- func_basename "$lib"
- name="$func_basename_result"
- eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
- test -z "$libdir" && \
- func_fatal_error "\`$lib' is not a valid libtool archive"
- func_append newdlfiles " ${lt_sysroot:+=}$libdir/$name"
- ;;
- *) func_append newdlfiles " $lib" ;;
- esac
- done
- dlfiles="$newdlfiles"
- newdlprefiles=
- for lib in $dlprefiles; do
- case $lib in
- *.la)
- # Only pass preopened files to the pseudo-archive (for
- # eventual linking with the app. that links it) if we
- # didn't already link the preopened objects directly into
- # the library:
- func_basename "$lib"
- name="$func_basename_result"
- eval libdir=`${SED} -n -e 's/^libdir=\(.*\)$/\1/p' $lib`
- test -z "$libdir" && \
- func_fatal_error "\`$lib' is not a valid libtool archive"
- func_append newdlprefiles " ${lt_sysroot:+=}$libdir/$name"
- ;;
- esac
- done
- dlprefiles="$newdlprefiles"
- else
- newdlfiles=
- for lib in $dlfiles; do
- case $lib in
- [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
- *) abs=`pwd`"/$lib" ;;
- esac
- func_append newdlfiles " $abs"
- done
- dlfiles="$newdlfiles"
- newdlprefiles=
- for lib in $dlprefiles; do
- case $lib in
- [\\/]* | [A-Za-z]:[\\/]*) abs="$lib" ;;
- *) abs=`pwd`"/$lib" ;;
- esac
- func_append newdlprefiles " $abs"
- done
- dlprefiles="$newdlprefiles"
- fi
- $RM $output
- # place dlname in correct position for cygwin
- # In fact, it would be nice if we could use this code for all target
- # systems that can't hard-code library paths into their executables
- # and that have no shared library path variable independent of PATH,
- # but it turns out we can't easily determine that from inspecting
- # libtool variables, so we have to hard-code the OSs to which it
- # applies here; at the moment, that means platforms that use the PE
- # object format with DLL files. See the long comment at the top of
- # tests/bindir.at for full details.
- tdlname=$dlname
- case $host,$output,$installed,$module,$dlname in
- *cygwin*,*lai,yes,no,*.dll | *mingw*,*lai,yes,no,*.dll | *cegcc*,*lai,yes,no,*.dll)
- # If a -bindir argument was supplied, place the dll there.
- if test "x$bindir" != x ;
- then
- func_relative_path "$install_libdir" "$bindir"
- tdlname=$func_relative_path_result$dlname
- else
- # Otherwise fall back on heuristic.
- tdlname=../bin/$dlname
- fi
- ;;
- esac
- $ECHO > $output "\
-# $outputname - a libtool library file
-# Generated by $PROGRAM (GNU $PACKAGE$TIMESTAMP) $VERSION
-#
-# Please DO NOT delete this file!
-# It is necessary for linking the library.
-
-# The name that we can dlopen(3).
-dlname='$tdlname'
-
-# Names of this library.
-library_names='$library_names'
-
-# The name of the static archive.
-old_library='$old_library'
-
-# Linker flags that can not go in dependency_libs.
-inherited_linker_flags='$new_inherited_linker_flags'
-
-# Libraries that this one depends upon.
-dependency_libs='$dependency_libs'
-
-# Names of additional weak libraries provided by this library
-weak_library_names='$weak_libs'
-
-# Version information for $libname.
-current=$current
-age=$age
-revision=$revision
-
-# Is this an already installed library?
-installed=$installed
-
-# Should we warn about portability when linking against -modules?
-shouldnotlink=$module
-
-# Files to dlopen/dlpreopen
-dlopen='$dlfiles'
-dlpreopen='$dlprefiles'
-
-# Directory that this library needs to be installed in:
-libdir='$install_libdir'"
- if test "$installed" = no && test "$need_relink" = yes; then
- $ECHO >> $output "\
-relink_command=\"$relink_command\""
- fi
- done
- }
-
- # Do a symbolic link so that the libtool archive can be found in
- # LD_LIBRARY_PATH before the program is installed.
- func_show_eval '( cd "$output_objdir" && $RM "$outputname" && $LN_S "../$outputname" "$outputname" )' 'exit $?'
- ;;
- esac
- exit $EXIT_SUCCESS
-}
-
-{ test "$opt_mode" = link || test "$opt_mode" = relink; } &&
- func_mode_link ${1+"$@"}
-
-
-# func_mode_uninstall arg...
-func_mode_uninstall ()
-{
- $opt_debug
- RM="$nonopt"
- files=
- rmforce=
- exit_status=0
-
- # This variable tells wrapper scripts just to set variables rather
- # than running their programs.
- libtool_install_magic="$magic"
-
- for arg
- do
- case $arg in
- -f) func_append RM " $arg"; rmforce=yes ;;
- -*) func_append RM " $arg" ;;
- *) func_append files " $arg" ;;
- esac
- done
-
- test -z "$RM" && \
- func_fatal_help "you must specify an RM program"
-
- rmdirs=
-
- for file in $files; do
- func_dirname "$file" "" "."
- dir="$func_dirname_result"
- if test "X$dir" = X.; then
- odir="$objdir"
- else
- odir="$dir/$objdir"
- fi
- func_basename "$file"
- name="$func_basename_result"
- test "$opt_mode" = uninstall && odir="$dir"
-
- # Remember odir for removal later, being careful to avoid duplicates
- if test "$opt_mode" = clean; then
- case " $rmdirs " in
- *" $odir "*) ;;
- *) func_append rmdirs " $odir" ;;
- esac
- fi
-
- # Don't error if the file doesn't exist and rm -f was used.
- if { test -L "$file"; } >/dev/null 2>&1 ||
- { test -h "$file"; } >/dev/null 2>&1 ||
- test -f "$file"; then
- :
- elif test -d "$file"; then
- exit_status=1
- continue
- elif test "$rmforce" = yes; then
- continue
- fi
-
- rmfiles="$file"
-
- case $name in
- *.la)
- # Possibly a libtool archive, so verify it.
- if func_lalib_p "$file"; then
- func_source $dir/$name
-
- # Delete the libtool libraries and symlinks.
- for n in $library_names; do
- func_append rmfiles " $odir/$n"
- done
- test -n "$old_library" && func_append rmfiles " $odir/$old_library"
-
- case "$opt_mode" in
- clean)
- case " $library_names " in
- *" $dlname "*) ;;
- *) test -n "$dlname" && func_append rmfiles " $odir/$dlname" ;;
- esac
- test -n "$libdir" && func_append rmfiles " $odir/$name $odir/${name}i"
- ;;
- uninstall)
- if test -n "$library_names"; then
- # Do each command in the postuninstall commands.
- func_execute_cmds "$postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
- fi
-
- if test -n "$old_library"; then
- # Do each command in the old_postuninstall commands.
- func_execute_cmds "$old_postuninstall_cmds" 'test "$rmforce" = yes || exit_status=1'
- fi
- # FIXME: should reinstall the best remaining shared library.
- ;;
- esac
- fi
- ;;
-
- *.lo)
- # Possibly a libtool object, so verify it.
- if func_lalib_p "$file"; then
-
- # Read the .lo file
- func_source $dir/$name
-
- # Add PIC object to the list of files to remove.
- if test -n "$pic_object" &&
- test "$pic_object" != none; then
- func_append rmfiles " $dir/$pic_object"
- fi
-
- # Add non-PIC object to the list of files to remove.
- if test -n "$non_pic_object" &&
- test "$non_pic_object" != none; then
- func_append rmfiles " $dir/$non_pic_object"
- fi
- fi
- ;;
-
- *)
- if test "$opt_mode" = clean ; then
- noexename=$name
- case $file in
- *.exe)
- func_stripname '' '.exe' "$file"
- file=$func_stripname_result
- func_stripname '' '.exe' "$name"
- noexename=$func_stripname_result
- # $file with .exe has already been added to rmfiles,
- # add $file without .exe
- func_append rmfiles " $file"
- ;;
- esac
- # Do a test to see if this is a libtool program.
- if func_ltwrapper_p "$file"; then
- if func_ltwrapper_executable_p "$file"; then
- func_ltwrapper_scriptname "$file"
- relink_command=
- func_source $func_ltwrapper_scriptname_result
- func_append rmfiles " $func_ltwrapper_scriptname_result"
- else
- relink_command=
- func_source $dir/$noexename
- fi
-
- # note $name still contains .exe if it was in $file originally
- # as does the version of $file that was added into $rmfiles
- func_append rmfiles " $odir/$name $odir/${name}S.${objext}"
- if test "$fast_install" = yes && test -n "$relink_command"; then
- func_append rmfiles " $odir/lt-$name"
- fi
- if test "X$noexename" != "X$name" ; then
- func_append rmfiles " $odir/lt-${noexename}.c"
- fi
- fi
- fi
- ;;
- esac
- func_show_eval "$RM $rmfiles" 'exit_status=1'
- done
-
- # Try to remove the ${objdir}s in the directories where we deleted files
- for dir in $rmdirs; do
- if test -d "$dir"; then
- func_show_eval "rmdir $dir >/dev/null 2>&1"
- fi
- done
-
- exit $exit_status
-}
-
-{ test "$opt_mode" = uninstall || test "$opt_mode" = clean; } &&
- func_mode_uninstall ${1+"$@"}
-
-test -z "$opt_mode" && {
- help="$generic_help"
- func_fatal_help "you must specify a MODE"
-}
-
-test -z "$exec_cmd" && \
- func_fatal_help "invalid operation mode \`$opt_mode'"
-
-if test -n "$exec_cmd"; then
- eval exec "$exec_cmd"
- exit $EXIT_FAILURE
-fi
-
-exit $exit_status
-
-
-# The TAGs below are defined such that we never get into a situation
-# in which we disable both kinds of libraries. Given conflicting
-# choices, we go for a static library, that is the most portable,
-# since we can't tell whether shared libraries were disabled because
-# the user asked for that or because the platform doesn't support
-# them. This is particularly important on AIX, because we don't
-# support having both static and shared libraries enabled at the same
-# time on that platform, so we default to a shared-only configuration.
-# If a disable-shared tag is given, we'll fallback to a static-only
-# configuration. But we'll never go from static-only to shared-only.
-
-# ### BEGIN LIBTOOL TAG CONFIG: disable-shared
-build_libtool_libs=no
-build_old_libs=yes
-# ### END LIBTOOL TAG CONFIG: disable-shared
-
-# ### BEGIN LIBTOOL TAG CONFIG: disable-static
-build_old_libs=`case $build_libtool_libs in yes) echo no;; *) echo yes;; esac`
-# ### END LIBTOOL TAG CONFIG: disable-static
-
-# Local Variables:
-# mode:shell-script
-# sh-indentation:2
-# End:
-# vi:sw=2
-
+++ /dev/null
-#! /bin/sh
-# Common wrapper for a few potentially missing GNU programs.
-
-scriptversion=2012-06-26.16; # UTC
-
-# Copyright (C) 1996-2012 Free Software Foundation, Inc.
-# Originally written by Fran,cois Pinard <pinard@iro.umontreal.ca>, 1996.
-
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-if test $# -eq 0; then
- echo 1>&2 "Try '$0 --help' for more information"
- exit 1
-fi
-
-case $1 in
-
- --is-lightweight)
- # Used by our autoconf macros to check whether the available missing
- # script is modern enough.
- exit 0
- ;;
-
- --run)
- # Back-compat with the calling convention used by older automake.
- shift
- ;;
-
- -h|--h|--he|--hel|--help)
- echo "\
-$0 [OPTION]... PROGRAM [ARGUMENT]...
-
-Run 'PROGRAM [ARGUMENT]...', returning a proper advice when this fails due
-to PROGRAM being missing or too old.
-
-Options:
- -h, --help display this help and exit
- -v, --version output version information and exit
-
-Supported PROGRAM values:
- aclocal autoconf autoheader autom4te automake makeinfo
- bison yacc flex lex help2man
-
-Version suffixes to PROGRAM as well as the prefixes 'gnu-', 'gnu', and
-'g' are ignored when checking the name.
-
-Send bug reports to <bug-automake@gnu.org>."
- exit $?
- ;;
-
- -v|--v|--ve|--ver|--vers|--versi|--versio|--version)
- echo "missing $scriptversion (GNU Automake)"
- exit $?
- ;;
-
- -*)
- echo 1>&2 "$0: unknown '$1' option"
- echo 1>&2 "Try '$0 --help' for more information"
- exit 1
- ;;
-
-esac
-
-# Run the given program, remember its exit status.
-"$@"; st=$?
-
-# If it succeeded, we are done.
-test $st -eq 0 && exit 0
-
-# Also exit now if we it failed (or wasn't found), and '--version' was
-# passed; such an option is passed most likely to detect whether the
-# program is present and works.
-case $2 in --version|--help) exit $st;; esac
-
-# Exit code 63 means version mismatch. This often happens when the user
-# tries to use an ancient version of a tool on a file that requires a
-# minimum version.
-if test $st -eq 63; then
- msg="probably too old"
-elif test $st -eq 127; then
- # Program was missing.
- msg="missing on your system"
-else
- # Program was found and executed, but failed. Give up.
- exit $st
-fi
-
-perl_URL=http://www.perl.org/
-flex_URL=http://flex.sourceforge.net/
-gnu_software_URL=http://www.gnu.org/software
-
-program_details ()
-{
- case $1 in
- aclocal|automake)
- echo "The '$1' program is part of the GNU Automake package:"
- echo "<$gnu_software_URL/automake>"
- echo "It also requires GNU Autoconf, GNU m4 and Perl in order to run:"
- echo "<$gnu_software_URL/autoconf>"
- echo "<$gnu_software_URL/m4/>"
- echo "<$perl_URL>"
- ;;
- autoconf|autom4te|autoheader)
- echo "The '$1' program is part of the GNU Autoconf package:"
- echo "<$gnu_software_URL/autoconf/>"
- echo "It also requires GNU m4 and Perl in order to run:"
- echo "<$gnu_software_URL/m4/>"
- echo "<$perl_URL>"
- ;;
- esac
-}
-
-give_advice ()
-{
- # Normalize program name to check for.
- normalized_program=`echo "$1" | sed '
- s/^gnu-//; t
- s/^gnu//; t
- s/^g//; t'`
-
- printf '%s\n' "'$1' is $msg."
-
- configure_deps="'configure.ac' or m4 files included by 'configure.ac'"
- case $normalized_program in
- autoconf*)
- echo "You should only need it if you modified 'configure.ac',"
- echo "or m4 files included by it."
- program_details 'autoconf'
- ;;
- autoheader*)
- echo "You should only need it if you modified 'acconfig.h' or"
- echo "$configure_deps."
- program_details 'autoheader'
- ;;
- automake*)
- echo "You should only need it if you modified 'Makefile.am' or"
- echo "$configure_deps."
- program_details 'automake'
- ;;
- aclocal*)
- echo "You should only need it if you modified 'acinclude.m4' or"
- echo "$configure_deps."
- program_details 'aclocal'
- ;;
- autom4te*)
- echo "You might have modified some maintainer files that require"
- echo "the 'automa4te' program to be rebuilt."
- program_details 'autom4te'
- ;;
- bison*|yacc*)
- echo "You should only need it if you modified a '.y' file."
- echo "You may want to install the GNU Bison package:"
- echo "<$gnu_software_URL/bison/>"
- ;;
- lex*|flex*)
- echo "You should only need it if you modified a '.l' file."
- echo "You may want to install the Fast Lexical Analyzer package:"
- echo "<$flex_URL>"
- ;;
- help2man*)
- echo "You should only need it if you modified a dependency" \
- "of a man page."
- echo "You may want to install the GNU Help2man package:"
- echo "<$gnu_software_URL/help2man/>"
- ;;
- makeinfo*)
- echo "You should only need it if you modified a '.texi' file, or"
- echo "any other file indirectly affecting the aspect of the manual."
- echo "You might want to install the Texinfo package:"
- echo "<$gnu_software_URL/texinfo/>"
- echo "The spurious makeinfo call might also be the consequence of"
- echo "using a buggy 'make' (AIX, DU, IRIX), in which case you might"
- echo "want to install GNU make:"
- echo "<$gnu_software_URL/make/>"
- ;;
- *)
- echo "You might have modified some files without having the proper"
- echo "tools for further handling them. Check the 'README' file, it"
- echo "often tells you about the needed prerequisites for installing"
- echo "this package. You may also peek at any GNU archive site, in"
- echo "case some other package contains this missing '$1' program."
- ;;
- esac
-}
-
-give_advice "$1" | sed -e '1s/^/WARNING: /' \
- -e '2,$s/^/ /' >&2
-
-# Propagate the correct exit status (expected to be 127 for a program
-# not found, 63 for a program that failed due to version mismatch).
-exit $st
-
-# Local variables:
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
-# End:
+++ /dev/null
-.TH PNG 5 "July 18, 2013"
-.SH NAME
-png \- Portable Network Graphics (PNG) format
-.SH DESCRIPTION
-PNG (Portable Network Graphics) is an extensible file format for the
-lossless, portable, well-compressed storage of raster images. PNG provides
-a patent-free replacement for GIF and can also replace many
-common uses of TIFF. Indexed-color, grayscale, and truecolor images are
-supported, plus an optional alpha channel. Sample depths range from
-1 to 16 bits.
-.br
-
-PNG is designed to work well in online viewing applications, such as the
-World Wide Web, so it is fully streamable with a progressive display
-option. PNG is robust, providing both full file integrity checking and
-fast, simple detection of common transmission errors. Also, PNG can store
-gamma and chromaticity data for improved color matching on heterogeneous
-platforms.
-
-.SH "SEE ALSO"
-.BR "libpng"(3), " libpngpf"(3), " zlib"(3), " deflate"(5), " " and " zlib"(5)
-.LP
-PNG specification (second edition), November 2003:
-.IP
-.br
- <http://www.w3.org/TR/2003/REC-PNG-20031110/
-PNG 1.2 specification, July 1999:
-.IP
-.br
-http://www.libpng.org/pub/png
-.LP
-PNG 1.0 specification, October 1996:
-.IP
-.br
-RFC 2083
-.IP
-.br
-ftp://ds.internic.net/rfc/rfc2083.txt
-.br
-or (as a W3C Recommendation) at
-.br
-http://www.w3.org/TR/REC-png.html
-.SH AUTHORS
-This man page: Glenn Randers-Pehrson
-.LP
-Portable Network Graphics (PNG) Specification (Second Edition)
-Information technology - Computer graphics and image processing -
-Portable Network Graphics (PNG): Functional specification.
-ISO/IEC 15948:2003 (E) (November 10, 2003): David Duce and others.
-.LP
-Portable Network Graphics (PNG) Specification Version 1.2 (July 8, 1999):
-Glenn Randers-Pehrson and others (png-list).
-.LP
-Portable Network Graphics (PNG) Specification Version 1.0 (October 1, 1996):
-Thomas Boutell and others (png-list).
-.LP
-
-
-.SH COPYRIGHT NOTICE
-.LP
-This man page is Copyright (c) 1998-2006 Glenn Randers-Pehrson. See png.h
-for conditions of use and distribution.
-.LP
-The PNG Specification (Second Edition) is
-Copyright (c) 2003 W3C. (MIT, ERCIM, Keio), All Rights Reserved.
-.LP
-The PNG-1.2 specification is copyright (c) 1999 Glenn Randers-Pehrson.
-See the specification for conditions of use and distribution.
-.LP
-The PNG-1.0 specification is copyright (c) 1996 Massachusetts Institute of
-Technology. See the specification for conditions of use and distribution.
-.LP
-.\" end of man page
-
+++ /dev/null
-
-/* png.c - location for general purpose libpng functions
- *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#include "pngpriv.h"
-
-/* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_3 Your_png_h_is_not_version_1_6_3;
-
-/* Tells libpng that we have already handled the first "num_bytes" bytes
- * of the PNG file signature. If the PNG data is embedded into another
- * stream we can set num_bytes = 8 so that libpng will not attempt to read
- * or write any of the magic bytes before it starts on the IHDR.
- */
-
-#ifdef PNG_READ_SUPPORTED
-void PNGAPI
-png_set_sig_bytes(png_structrp png_ptr, int num_bytes)
-{
- png_debug(1, "in png_set_sig_bytes");
-
- if (png_ptr == NULL)
- return;
-
- if (num_bytes > 8)
- png_error(png_ptr, "Too many bytes for PNG signature");
-
- png_ptr->sig_bytes = (png_byte)(num_bytes < 0 ? 0 : num_bytes);
-}
-
-/* Checks whether the supplied bytes match the PNG signature. We allow
- * checking less than the full 8-byte signature so that those apps that
- * already read the first few bytes of a file to determine the file type
- * can simply check the remaining bytes for extra assurance. Returns
- * an integer less than, equal to, or greater than zero if sig is found,
- * respectively, to be less than, to match, or be greater than the correct
- * PNG signature (this is the same behavior as strcmp, memcmp, etc).
- */
-int PNGAPI
-png_sig_cmp(png_const_bytep sig, png_size_t start, png_size_t num_to_check)
-{
- png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
-
- if (num_to_check > 8)
- num_to_check = 8;
-
- else if (num_to_check < 1)
- return (-1);
-
- if (start > 7)
- return (-1);
-
- if (start + num_to_check > 8)
- num_to_check = 8 - start;
-
- return ((int)(memcmp(&sig[start], &png_signature[start], num_to_check)));
-}
-
-#endif /* PNG_READ_SUPPORTED */
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-/* Function to allocate memory for zlib */
-PNG_FUNCTION(voidpf /* PRIVATE */,
-png_zalloc,(voidpf png_ptr, uInt items, uInt size),PNG_ALLOCATED)
-{
- png_alloc_size_t num_bytes = size;
-
- if (png_ptr == NULL)
- return NULL;
-
- if (items >= (~(png_alloc_size_t)0)/size)
- {
- png_warning (png_voidcast(png_structrp, png_ptr),
- "Potential overflow in png_zalloc()");
- return NULL;
- }
-
- num_bytes *= items;
- return png_malloc_warn(png_voidcast(png_structrp, png_ptr), num_bytes);
-}
-
-/* Function to free memory for zlib */
-void /* PRIVATE */
-png_zfree(voidpf png_ptr, voidpf ptr)
-{
- png_free(png_voidcast(png_const_structrp,png_ptr), ptr);
-}
-
-/* Reset the CRC variable to 32 bits of 1's. Care must be taken
- * in case CRC is > 32 bits to leave the top bits 0.
- */
-void /* PRIVATE */
-png_reset_crc(png_structrp png_ptr)
-{
- /* The cast is safe because the crc is a 32 bit value. */
- png_ptr->crc = (png_uint_32)crc32(0, Z_NULL, 0);
-}
-
-/* Calculate the CRC over a section of data. We can only pass as
- * much data to this routine as the largest single buffer size. We
- * also check that this data will actually be used before going to the
- * trouble of calculating it.
- */
-void /* PRIVATE */
-png_calculate_crc(png_structrp png_ptr, png_const_bytep ptr, png_size_t length)
-{
- int need_crc = 1;
-
- if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))
- {
- if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
- (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
- need_crc = 0;
- }
-
- else /* critical */
- {
- if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
- need_crc = 0;
- }
-
- /* 'uLong' is defined in zlib.h as unsigned long; this means that on some
- * systems it is a 64 bit value. crc32, however, returns 32 bits so the
- * following cast is safe. 'uInt' may be no more than 16 bits, so it is
- * necessary to perform a loop here.
- */
- if (need_crc && length > 0)
- {
- uLong crc = png_ptr->crc; /* Should never issue a warning */
-
- do
- {
- uInt safe_length = (uInt)length;
- if (safe_length == 0)
- safe_length = (uInt)-1; /* evil, but safe */
-
- crc = crc32(crc, ptr, safe_length);
-
- /* The following should never issue compiler warnings; if they do the
- * target system has characteristics that will probably violate other
- * assumptions within the libpng code.
- */
- ptr += safe_length;
- length -= safe_length;
- }
- while (length > 0);
-
- /* And the following is always safe because the crc is only 32 bits. */
- png_ptr->crc = (png_uint_32)crc;
- }
-}
-
-/* Check a user supplied version number, called from both read and write
- * functions that create a png_struct.
- */
-int
-png_user_version_check(png_structrp png_ptr, png_const_charp user_png_ver)
-{
- if (user_png_ver)
- {
- int i = 0;
-
- do
- {
- if (user_png_ver[i] != png_libpng_ver[i])
- png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
- } while (png_libpng_ver[i++]);
- }
-
- else
- png_ptr->flags |= PNG_FLAG_LIBRARY_MISMATCH;
-
- if (png_ptr->flags & PNG_FLAG_LIBRARY_MISMATCH)
- {
- /* Libpng 0.90 and later are binary incompatible with libpng 0.89, so
- * we must recompile any applications that use any older library version.
- * For versions after libpng 1.0, we will be compatible, so we need
- * only check the first and third digits (note that when we reach version
- * 1.10 we will need to check the fourth symbol, namely user_png_ver[3]).
- */
- if (user_png_ver == NULL || user_png_ver[0] != png_libpng_ver[0] ||
- (user_png_ver[0] == '1' && (user_png_ver[2] != png_libpng_ver[2] ||
- user_png_ver[3] != png_libpng_ver[3])) ||
- (user_png_ver[0] == '0' && user_png_ver[2] < '9'))
- {
-#ifdef PNG_WARNINGS_SUPPORTED
- size_t pos = 0;
- char m[128];
-
- pos = png_safecat(m, (sizeof m), pos,
- "Application built with libpng-");
- pos = png_safecat(m, (sizeof m), pos, user_png_ver);
- pos = png_safecat(m, (sizeof m), pos, " but running with ");
- pos = png_safecat(m, (sizeof m), pos, png_libpng_ver);
-
- png_warning(png_ptr, m);
-#endif
-
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- png_ptr->flags = 0;
-#endif
-
- return 0;
- }
- }
-
- /* Success return. */
- return 1;
-}
-
-/* Generic function to create a png_struct for either read or write - this
- * contains the common initialization.
- */
-PNG_FUNCTION(png_structp /* PRIVATE */,
-png_create_png_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
-{
- png_struct create_struct;
-# ifdef PNG_SETJMP_SUPPORTED
- jmp_buf create_jmp_buf;
-# endif
-
- /* This temporary stack-allocated structure is used to provide a place to
- * build enough context to allow the user provided memory allocator (if any)
- * to be called.
- */
- memset(&create_struct, 0, (sizeof create_struct));
-
- /* Added at libpng-1.2.6 */
-# ifdef PNG_USER_LIMITS_SUPPORTED
- create_struct.user_width_max = PNG_USER_WIDTH_MAX;
- create_struct.user_height_max = PNG_USER_HEIGHT_MAX;
-
-# ifdef PNG_USER_CHUNK_CACHE_MAX
- /* Added at libpng-1.2.43 and 1.4.0 */
- create_struct.user_chunk_cache_max = PNG_USER_CHUNK_CACHE_MAX;
-# endif
-
-# ifdef PNG_USER_CHUNK_MALLOC_MAX
- /* Added at libpng-1.2.43 and 1.4.1, required only for read but exists
- * in png_struct regardless.
- */
- create_struct.user_chunk_malloc_max = PNG_USER_CHUNK_MALLOC_MAX;
-# endif
-# endif
-
- /* The following two API calls simply set fields in png_struct, so it is safe
- * to do them now even though error handling is not yet set up.
- */
-# ifdef PNG_USER_MEM_SUPPORTED
- png_set_mem_fn(&create_struct, mem_ptr, malloc_fn, free_fn);
-# endif
-
- /* (*error_fn) can return control to the caller after the error_ptr is set,
- * this will result in a memory leak unless the error_fn does something
- * extremely sophisticated. The design lacks merit but is implicit in the
- * API.
- */
- png_set_error_fn(&create_struct, error_ptr, error_fn, warn_fn);
-
-# ifdef PNG_SETJMP_SUPPORTED
- if (!setjmp(create_jmp_buf))
- {
- /* Temporarily fake out the longjmp information until we have
- * successfully completed this function. This only works if we have
- * setjmp() support compiled in, but it is safe - this stuff should
- * never happen.
- */
- create_struct.jmp_buf_ptr = &create_jmp_buf;
- create_struct.jmp_buf_size = 0; /*stack allocation*/
- create_struct.longjmp_fn = longjmp;
-# else
- {
-# endif
- /* Call the general version checker (shared with read and write code):
- */
- if (png_user_version_check(&create_struct, user_png_ver))
- {
- png_structrp png_ptr = png_voidcast(png_structrp,
- png_malloc_warn(&create_struct, (sizeof *png_ptr)));
-
- if (png_ptr != NULL)
- {
- /* png_ptr->zstream holds a back-pointer to the png_struct, so
- * this can only be done now:
- */
- create_struct.zstream.zalloc = png_zalloc;
- create_struct.zstream.zfree = png_zfree;
- create_struct.zstream.opaque = png_ptr;
-
-# ifdef PNG_SETJMP_SUPPORTED
- /* Eliminate the local error handling: */
- create_struct.jmp_buf_ptr = NULL;
- create_struct.jmp_buf_size = 0;
- create_struct.longjmp_fn = 0;
-# endif
-
- *png_ptr = create_struct;
-
- /* This is the successful return point */
- return png_ptr;
- }
- }
- }
-
- /* A longjmp because of a bug in the application storage allocator or a
- * simple failure to allocate the png_struct.
- */
- return NULL;
-}
-
-/* Allocate the memory for an info_struct for the application. */
-PNG_FUNCTION(png_infop,PNGAPI
-png_create_info_struct,(png_const_structrp png_ptr),PNG_ALLOCATED)
-{
- png_inforp info_ptr;
-
- png_debug(1, "in png_create_info_struct");
-
- if (png_ptr == NULL)
- return NULL;
-
- /* Use the internal API that does not (or at least should not) error out, so
- * that this call always returns ok. The application typically sets up the
- * error handling *after* creating the info_struct because this is the way it
- * has always been done in 'example.c'.
- */
- info_ptr = png_voidcast(png_inforp, png_malloc_base(png_ptr,
- (sizeof *info_ptr)));
-
- if (info_ptr != NULL)
- memset(info_ptr, 0, (sizeof *info_ptr));
-
- return info_ptr;
-}
-
-/* This function frees the memory associated with a single info struct.
- * Normally, one would use either png_destroy_read_struct() or
- * png_destroy_write_struct() to free an info struct, but this may be
- * useful for some applications. From libpng 1.6.0 this function is also used
- * internally to implement the png_info release part of the 'struct' destroy
- * APIs. This ensures that all possible approaches free the same data (all of
- * it).
- */
-void PNGAPI
-png_destroy_info_struct(png_const_structrp png_ptr, png_infopp info_ptr_ptr)
-{
- png_inforp info_ptr = NULL;
-
- png_debug(1, "in png_destroy_info_struct");
-
- if (png_ptr == NULL)
- return;
-
- if (info_ptr_ptr != NULL)
- info_ptr = *info_ptr_ptr;
-
- if (info_ptr != NULL)
- {
- /* Do this first in case of an error below; if the app implements its own
- * memory management this can lead to png_free calling png_error, which
- * will abort this routine and return control to the app error handler.
- * An infinite loop may result if it then tries to free the same info
- * ptr.
- */
- *info_ptr_ptr = NULL;
-
- png_free_data(png_ptr, info_ptr, PNG_FREE_ALL, -1);
- memset(info_ptr, 0, (sizeof *info_ptr));
- png_free(png_ptr, info_ptr);
- }
-}
-
-/* Initialize the info structure. This is now an internal function (0.89)
- * and applications using it are urged to use png_create_info_struct()
- * instead. Use deprecated in 1.6.0, internal use removed (used internally it
- * is just a memset).
- *
- * NOTE: it is almost inconceivable that this API is used because it bypasses
- * the user-memory mechanism and the user error handling/warning mechanisms in
- * those cases where it does anything other than a memset.
- */
-PNG_FUNCTION(void,PNGAPI
-png_info_init_3,(png_infopp ptr_ptr, png_size_t png_info_struct_size),
- PNG_DEPRECATED)
-{
- png_inforp info_ptr = *ptr_ptr;
-
- png_debug(1, "in png_info_init_3");
-
- if (info_ptr == NULL)
- return;
-
- if ((sizeof (png_info)) > png_info_struct_size)
- {
- *ptr_ptr = NULL;
- /* The following line is why this API should not be used: */
- free(info_ptr);
- info_ptr = png_voidcast(png_inforp, png_malloc_base(NULL,
- (sizeof *info_ptr)));
- *ptr_ptr = info_ptr;
- }
-
- /* Set everything to 0 */
- memset(info_ptr, 0, (sizeof *info_ptr));
-}
-
-/* The following API is not called internally */
-void PNGAPI
-png_data_freer(png_const_structrp png_ptr, png_inforp info_ptr,
- int freer, png_uint_32 mask)
-{
- png_debug(1, "in png_data_freer");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (freer == PNG_DESTROY_WILL_FREE_DATA)
- info_ptr->free_me |= mask;
-
- else if (freer == PNG_USER_WILL_FREE_DATA)
- info_ptr->free_me &= ~mask;
-
- else
- png_error(png_ptr, "Unknown freer parameter in png_data_freer");
-}
-
-void PNGAPI
-png_free_data(png_const_structrp png_ptr, png_inforp info_ptr, png_uint_32 mask,
- int num)
-{
- png_debug(1, "in png_free_data");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
-#ifdef PNG_TEXT_SUPPORTED
- /* Free text item num or (if num == -1) all text items */
- if ((mask & PNG_FREE_TEXT) & info_ptr->free_me)
- {
- if (num != -1)
- {
- if (info_ptr->text && info_ptr->text[num].key)
- {
- png_free(png_ptr, info_ptr->text[num].key);
- info_ptr->text[num].key = NULL;
- }
- }
-
- else
- {
- int i;
- for (i = 0; i < info_ptr->num_text; i++)
- png_free_data(png_ptr, info_ptr, PNG_FREE_TEXT, i);
- png_free(png_ptr, info_ptr->text);
- info_ptr->text = NULL;
- info_ptr->num_text=0;
- }
- }
-#endif
-
-#ifdef PNG_tRNS_SUPPORTED
- /* Free any tRNS entry */
- if ((mask & PNG_FREE_TRNS) & info_ptr->free_me)
- {
- png_free(png_ptr, info_ptr->trans_alpha);
- info_ptr->trans_alpha = NULL;
- info_ptr->valid &= ~PNG_INFO_tRNS;
- }
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
- /* Free any sCAL entry */
- if ((mask & PNG_FREE_SCAL) & info_ptr->free_me)
- {
- png_free(png_ptr, info_ptr->scal_s_width);
- png_free(png_ptr, info_ptr->scal_s_height);
- info_ptr->scal_s_width = NULL;
- info_ptr->scal_s_height = NULL;
- info_ptr->valid &= ~PNG_INFO_sCAL;
- }
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
- /* Free any pCAL entry */
- if ((mask & PNG_FREE_PCAL) & info_ptr->free_me)
- {
- png_free(png_ptr, info_ptr->pcal_purpose);
- png_free(png_ptr, info_ptr->pcal_units);
- info_ptr->pcal_purpose = NULL;
- info_ptr->pcal_units = NULL;
- if (info_ptr->pcal_params != NULL)
- {
- unsigned int i;
- for (i = 0; i < info_ptr->pcal_nparams; i++)
- {
- png_free(png_ptr, info_ptr->pcal_params[i]);
- info_ptr->pcal_params[i] = NULL;
- }
- png_free(png_ptr, info_ptr->pcal_params);
- info_ptr->pcal_params = NULL;
- }
- info_ptr->valid &= ~PNG_INFO_pCAL;
- }
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
- /* Free any profile entry */
- if ((mask & PNG_FREE_ICCP) & info_ptr->free_me)
- {
- png_free(png_ptr, info_ptr->iccp_name);
- png_free(png_ptr, info_ptr->iccp_profile);
- info_ptr->iccp_name = NULL;
- info_ptr->iccp_profile = NULL;
- info_ptr->valid &= ~PNG_INFO_iCCP;
- }
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
- /* Free a given sPLT entry, or (if num == -1) all sPLT entries */
- if ((mask & PNG_FREE_SPLT) & info_ptr->free_me)
- {
- if (num != -1)
- {
- if (info_ptr->splt_palettes)
- {
- png_free(png_ptr, info_ptr->splt_palettes[num].name);
- png_free(png_ptr, info_ptr->splt_palettes[num].entries);
- info_ptr->splt_palettes[num].name = NULL;
- info_ptr->splt_palettes[num].entries = NULL;
- }
- }
-
- else
- {
- if (info_ptr->splt_palettes_num)
- {
- int i;
- for (i = 0; i < info_ptr->splt_palettes_num; i++)
- png_free_data(png_ptr, info_ptr, PNG_FREE_SPLT, (int)i);
-
- png_free(png_ptr, info_ptr->splt_palettes);
- info_ptr->splt_palettes = NULL;
- info_ptr->splt_palettes_num = 0;
- }
- info_ptr->valid &= ~PNG_INFO_sPLT;
- }
- }
-#endif
-
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
- if ((mask & PNG_FREE_UNKN) & info_ptr->free_me)
- {
- if (num != -1)
- {
- if (info_ptr->unknown_chunks)
- {
- png_free(png_ptr, info_ptr->unknown_chunks[num].data);
- info_ptr->unknown_chunks[num].data = NULL;
- }
- }
-
- else
- {
- int i;
-
- if (info_ptr->unknown_chunks_num)
- {
- for (i = 0; i < info_ptr->unknown_chunks_num; i++)
- png_free_data(png_ptr, info_ptr, PNG_FREE_UNKN, (int)i);
-
- png_free(png_ptr, info_ptr->unknown_chunks);
- info_ptr->unknown_chunks = NULL;
- info_ptr->unknown_chunks_num = 0;
- }
- }
- }
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
- /* Free any hIST entry */
- if ((mask & PNG_FREE_HIST) & info_ptr->free_me)
- {
- png_free(png_ptr, info_ptr->hist);
- info_ptr->hist = NULL;
- info_ptr->valid &= ~PNG_INFO_hIST;
- }
-#endif
-
- /* Free any PLTE entry that was internally allocated */
- if ((mask & PNG_FREE_PLTE) & info_ptr->free_me)
- {
- png_free(png_ptr, info_ptr->palette);
- info_ptr->palette = NULL;
- info_ptr->valid &= ~PNG_INFO_PLTE;
- info_ptr->num_palette = 0;
- }
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
- /* Free any image bits attached to the info structure */
- if ((mask & PNG_FREE_ROWS) & info_ptr->free_me)
- {
- if (info_ptr->row_pointers)
- {
- png_uint_32 row;
- for (row = 0; row < info_ptr->height; row++)
- {
- png_free(png_ptr, info_ptr->row_pointers[row]);
- info_ptr->row_pointers[row] = NULL;
- }
- png_free(png_ptr, info_ptr->row_pointers);
- info_ptr->row_pointers = NULL;
- }
- info_ptr->valid &= ~PNG_INFO_IDAT;
- }
-#endif
-
- if (num != -1)
- mask &= ~PNG_FREE_MUL;
-
- info_ptr->free_me &= ~mask;
-}
-#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
-
-/* This function returns a pointer to the io_ptr associated with the user
- * functions. The application should free any memory associated with this
- * pointer before png_write_destroy() or png_read_destroy() are called.
- */
-png_voidp PNGAPI
-png_get_io_ptr(png_const_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return (NULL);
-
- return (png_ptr->io_ptr);
-}
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-# ifdef PNG_STDIO_SUPPORTED
-/* Initialize the default input/output functions for the PNG file. If you
- * use your own read or write routines, you can call either png_set_read_fn()
- * or png_set_write_fn() instead of png_init_io(). If you have defined
- * PNG_NO_STDIO or otherwise disabled PNG_STDIO_SUPPORTED, you must use a
- * function of your own because "FILE *" isn't necessarily available.
- */
-void PNGAPI
-png_init_io(png_structrp png_ptr, png_FILE_p fp)
-{
- png_debug(1, "in png_init_io");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->io_ptr = (png_voidp)fp;
-}
-# endif
-
-#ifdef PNG_SAVE_INT_32_SUPPORTED
-/* The png_save_int_32 function assumes integers are stored in two's
- * complement format. If this isn't the case, then this routine needs to
- * be modified to write data in two's complement format. Note that,
- * the following works correctly even if png_int_32 has more than 32 bits
- * (compare the more complex code required on read for sign extension.)
- */
-void PNGAPI
-png_save_int_32(png_bytep buf, png_int_32 i)
-{
- buf[0] = (png_byte)((i >> 24) & 0xff);
- buf[1] = (png_byte)((i >> 16) & 0xff);
- buf[2] = (png_byte)((i >> 8) & 0xff);
- buf[3] = (png_byte)(i & 0xff);
-}
-#endif
-
-# ifdef PNG_TIME_RFC1123_SUPPORTED
-/* Convert the supplied time into an RFC 1123 string suitable for use in
- * a "Creation Time" or other text-based time string.
- */
-int PNGAPI
-png_convert_to_rfc1123_buffer(char out[29], png_const_timep ptime)
-{
- static PNG_CONST char short_months[12][4] =
- {"Jan", "Feb", "Mar", "Apr", "May", "Jun",
- "Jul", "Aug", "Sep", "Oct", "Nov", "Dec"};
-
- if (out == NULL)
- return 0;
-
- if (ptime->year > 9999 /* RFC1123 limitation */ ||
- ptime->month == 0 || ptime->month > 12 ||
- ptime->day == 0 || ptime->day > 31 ||
- ptime->hour > 23 || ptime->minute > 59 ||
- ptime->second > 60)
- return 0;
-
- {
- size_t pos = 0;
- char number_buf[5]; /* enough for a four-digit year */
-
-# define APPEND_STRING(string) pos = png_safecat(out, 29, pos, (string))
-# define APPEND_NUMBER(format, value)\
- APPEND_STRING(PNG_FORMAT_NUMBER(number_buf, format, (value)))
-# define APPEND(ch) if (pos < 28) out[pos++] = (ch)
-
- APPEND_NUMBER(PNG_NUMBER_FORMAT_u, (unsigned)ptime->day);
- APPEND(' ');
- APPEND_STRING(short_months[(ptime->month - 1)]);
- APPEND(' ');
- APPEND_NUMBER(PNG_NUMBER_FORMAT_u, ptime->year);
- APPEND(' ');
- APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->hour);
- APPEND(':');
- APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->minute);
- APPEND(':');
- APPEND_NUMBER(PNG_NUMBER_FORMAT_02u, (unsigned)ptime->second);
- APPEND_STRING(" +0000"); /* This reliably terminates the buffer */
-
-# undef APPEND
-# undef APPEND_NUMBER
-# undef APPEND_STRING
- }
-
- return 1;
-}
-
-# if PNG_LIBPNG_VER < 10700
-/* To do: remove the following from libpng-1.7 */
-/* Original API that uses a private buffer in png_struct.
- * Deprecated because it causes png_struct to carry a spurious temporary
- * buffer (png_struct::time_buffer), better to have the caller pass this in.
- */
-png_const_charp PNGAPI
-png_convert_to_rfc1123(png_structrp png_ptr, png_const_timep ptime)
-{
- if (png_ptr != NULL)
- {
- /* The only failure above if png_ptr != NULL is from an invalid ptime */
- if (!png_convert_to_rfc1123_buffer(png_ptr->time_buffer, ptime))
- png_warning(png_ptr, "Ignoring invalid time value");
-
- else
- return png_ptr->time_buffer;
- }
-
- return NULL;
-}
-# endif
-# endif /* PNG_TIME_RFC1123_SUPPORTED */
-
-#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
-
-png_const_charp PNGAPI
-png_get_copyright(png_const_structrp png_ptr)
-{
- PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
-#ifdef PNG_STRING_COPYRIGHT
- return PNG_STRING_COPYRIGHT
-#else
-# ifdef __STDC__
- return PNG_STRING_NEWLINE \
- "libpng version 1.6.3 - July 18, 2013" PNG_STRING_NEWLINE \
- "Copyright (c) 1998-2013 Glenn Randers-Pehrson" PNG_STRING_NEWLINE \
- "Copyright (c) 1996-1997 Andreas Dilger" PNG_STRING_NEWLINE \
- "Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc." \
- PNG_STRING_NEWLINE;
-# else
- return "libpng version 1.6.3 - July 18, 2013\
- Copyright (c) 1998-2013 Glenn Randers-Pehrson\
- Copyright (c) 1996-1997 Andreas Dilger\
- Copyright (c) 1995-1996 Guy Eric Schalnat, Group 42, Inc.";
-# endif
-#endif
-}
-
-/* The following return the library version as a short string in the
- * format 1.0.0 through 99.99.99zz. To get the version of *.h files
- * used with your application, print out PNG_LIBPNG_VER_STRING, which
- * is defined in png.h.
- * Note: now there is no difference between png_get_libpng_ver() and
- * png_get_header_ver(). Due to the version_nn_nn_nn typedef guard,
- * it is guaranteed that png.c uses the correct version of png.h.
- */
-png_const_charp PNGAPI
-png_get_libpng_ver(png_const_structrp png_ptr)
-{
- /* Version of *.c files used when building libpng */
- return png_get_header_ver(png_ptr);
-}
-
-png_const_charp PNGAPI
-png_get_header_ver(png_const_structrp png_ptr)
-{
- /* Version of *.h files used when building libpng */
- PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
- return PNG_LIBPNG_VER_STRING;
-}
-
-png_const_charp PNGAPI
-png_get_header_version(png_const_structrp png_ptr)
-{
- /* Returns longer string containing both version and date */
- PNG_UNUSED(png_ptr) /* Silence compiler warning about unused png_ptr */
-#ifdef __STDC__
- return PNG_HEADER_VERSION_STRING
-# ifndef PNG_READ_SUPPORTED
- " (NO READ SUPPORT)"
-# endif
- PNG_STRING_NEWLINE;
-#else
- return PNG_HEADER_VERSION_STRING;
-#endif
-}
-
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
-int PNGAPI
-png_handle_as_unknown(png_const_structrp png_ptr, png_const_bytep chunk_name)
-{
- /* Check chunk_name and return "keep" value if it's on the list, else 0 */
- png_const_bytep p, p_end;
-
- if (png_ptr == NULL || chunk_name == NULL || png_ptr->num_chunk_list == 0)
- return PNG_HANDLE_CHUNK_AS_DEFAULT;
-
- p_end = png_ptr->chunk_list;
- p = p_end + png_ptr->num_chunk_list*5; /* beyond end */
-
- /* The code is the fifth byte after each four byte string. Historically this
- * code was always searched from the end of the list, this is no longer
- * necessary because the 'set' routine handles duplicate entries correcty.
- */
- do /* num_chunk_list > 0, so at least one */
- {
- p -= 5;
-
- if (!memcmp(chunk_name, p, 4))
- return p[4];
- }
- while (p > p_end);
-
- /* This means that known chunks should be processed and unknown chunks should
- * be handled according to the value of png_ptr->unknown_default; this can be
- * confusing because, as a result, there are two levels of defaulting for
- * unknown chunks.
- */
- return PNG_HANDLE_CHUNK_AS_DEFAULT;
-}
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-int /* PRIVATE */
-png_chunk_unknown_handling(png_const_structrp png_ptr, png_uint_32 chunk_name)
-{
- png_byte chunk_string[5];
-
- PNG_CSTRING_FROM_CHUNK(chunk_string, chunk_name);
- return png_handle_as_unknown(png_ptr, chunk_string);
-}
-#endif /* READ_UNKNOWN_CHUNKS */
-#endif /* SET_UNKNOWN_CHUNKS */
-
-#ifdef PNG_READ_SUPPORTED
-/* This function, added to libpng-1.0.6g, is untested. */
-int PNGAPI
-png_reset_zstream(png_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return Z_STREAM_ERROR;
-
- /* WARNING: this resets the window bits to the maximum! */
- return (inflateReset(&png_ptr->zstream));
-}
-#endif /* PNG_READ_SUPPORTED */
-
-/* This function was added to libpng-1.0.7 */
-png_uint_32 PNGAPI
-png_access_version_number(void)
-{
- /* Version of *.c files used when building libpng */
- return((png_uint_32)PNG_LIBPNG_VER);
-}
-
-
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-/* Ensure that png_ptr->zstream.msg holds some appropriate error message string.
- * If it doesn't 'ret' is used to set it to something appropriate, even in cases
- * like Z_OK or Z_STREAM_END where the error code is apparently a success code.
- */
-void /* PRIVATE */
-png_zstream_error(png_structrp png_ptr, int ret)
-{
- /* Translate 'ret' into an appropriate error string, priority is given to the
- * one in zstream if set. This always returns a string, even in cases like
- * Z_OK or Z_STREAM_END where the error code is a success code.
- */
- if (png_ptr->zstream.msg == NULL) switch (ret)
- {
- default:
- case Z_OK:
- png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected zlib return code");
- break;
-
- case Z_STREAM_END:
- /* Normal exit */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected end of LZ stream");
- break;
-
- case Z_NEED_DICT:
- /* This means the deflate stream did not have a dictionary; this
- * indicates a bogus PNG.
- */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("missing LZ dictionary");
- break;
-
- case Z_ERRNO:
- /* gz APIs only: should not happen */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("zlib IO error");
- break;
-
- case Z_STREAM_ERROR:
- /* internal libpng error */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("bad parameters to zlib");
- break;
-
- case Z_DATA_ERROR:
- png_ptr->zstream.msg = PNGZ_MSG_CAST("damaged LZ stream");
- break;
-
- case Z_MEM_ERROR:
- png_ptr->zstream.msg = PNGZ_MSG_CAST("insufficient memory");
- break;
-
- case Z_BUF_ERROR:
- /* End of input or output; not a problem if the caller is doing
- * incremental read or write.
- */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("truncated");
- break;
-
- case Z_VERSION_ERROR:
- png_ptr->zstream.msg = PNGZ_MSG_CAST("unsupported zlib version");
- break;
-
- case PNG_UNEXPECTED_ZLIB_RETURN:
- /* Compile errors here mean that zlib now uses the value co-opted in
- * pngpriv.h for PNG_UNEXPECTED_ZLIB_RETURN; update the switch above
- * and change pngpriv.h. Note that this message is "... return",
- * whereas the default/Z_OK one is "... return code".
- */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("unexpected zlib return");
- break;
- }
-}
-
-/* png_convert_size: a PNGAPI but no longer in png.h, so deleted
- * at libpng 1.5.5!
- */
-
-/* Added at libpng version 1.2.34 and 1.4.0 (moved from pngset.c) */
-#ifdef PNG_GAMMA_SUPPORTED /* always set if COLORSPACE */
-static int
-png_colorspace_check_gamma(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_fixed_point gAMA, int from)
- /* This is called to check a new gamma value against an existing one. The
- * routine returns false if the new gamma value should not be written.
- *
- * 'from' says where the new gamma value comes from:
- *
- * 0: the new gamma value is the libpng estimate for an ICC profile
- * 1: the new gamma value comes from a gAMA chunk
- * 2: the new gamma value comes from an sRGB chunk
- */
-{
- png_fixed_point gtest;
-
- if ((colorspace->flags & PNG_COLORSPACE_HAVE_GAMMA) != 0 &&
- (!png_muldiv(>est, colorspace->gamma, PNG_FP_1, gAMA) ||
- png_gamma_significant(gtest)))
- {
- /* Either this is an sRGB image, in which case the calculated gamma
- * approximation should match, or this is an image with a profile and the
- * value libpng calculates for the gamma of the profile does not match the
- * value recorded in the file. The former, sRGB, case is an error, the
- * latter is just a warning.
- */
- if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0 || from == 2)
- {
- png_chunk_report(png_ptr, "gamma value does not match sRGB",
- PNG_CHUNK_ERROR);
- /* Do not overwrite an sRGB value */
- return from == 2;
- }
-
- else /* sRGB tag not involved */
- {
- png_chunk_report(png_ptr, "gamma value does not match libpng estimate",
- PNG_CHUNK_WARNING);
- return from == 1;
- }
- }
-
- return 1;
-}
-
-void /* PRIVATE */
-png_colorspace_set_gamma(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_fixed_point gAMA)
-{
- /* Changed in libpng-1.5.4 to limit the values to ensure overflow can't
- * occur. Since the fixed point representation is assymetrical it is
- * possible for 1/gamma to overflow the limit of 21474 and this means the
- * gamma value must be at least 5/100000 and hence at most 20000.0. For
- * safety the limits here are a little narrower. The values are 0.00016 to
- * 6250.0, which are truly ridiculous gamma values (and will produce
- * displays that are all black or all white.)
- *
- * In 1.6.0 this test replaces the ones in pngrutil.c, in the gAMA chunk
- * handling code, which only required the value to be >0.
- */
- png_const_charp errmsg;
-
- if (gAMA < 16 || gAMA > 625000000)
- errmsg = "gamma value out of range";
-
-# ifdef PNG_READ_gAMA_SUPPORTED
- /* Allow the application to set the gamma value more than once */
- else if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
- (colorspace->flags & PNG_COLORSPACE_FROM_gAMA) != 0)
- errmsg = "duplicate";
-# endif
-
- /* Do nothing if the colorspace is already invalid */
- else if (colorspace->flags & PNG_COLORSPACE_INVALID)
- return;
-
- else
- {
- if (png_colorspace_check_gamma(png_ptr, colorspace, gAMA, 1/*from gAMA*/))
- {
- /* Store this gamma value. */
- colorspace->gamma = gAMA;
- colorspace->flags |=
- (PNG_COLORSPACE_HAVE_GAMMA | PNG_COLORSPACE_FROM_gAMA);
- }
-
- /* At present if the check_gamma test fails the gamma of the colorspace is
- * not updated however the colorspace is not invalidated. This
- * corresponds to the case where the existing gamma comes from an sRGB
- * chunk or profile. An error message has already been output.
- */
- return;
- }
-
- /* Error exit - errmsg has been set. */
- colorspace->flags |= PNG_COLORSPACE_INVALID;
- png_chunk_report(png_ptr, errmsg, PNG_CHUNK_WRITE_ERROR);
-}
-
-void /* PRIVATE */
-png_colorspace_sync_info(png_const_structrp png_ptr, png_inforp info_ptr)
-{
- if (info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
- {
- /* Everything is invalid */
- info_ptr->valid &= ~(PNG_INFO_gAMA|PNG_INFO_cHRM|PNG_INFO_sRGB|
- PNG_INFO_iCCP);
-
-# ifdef PNG_COLORSPACE_SUPPORTED
- /* Clean up the iCCP profile now if it won't be used. */
- png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, -1/*not used*/);
-# else
- PNG_UNUSED(png_ptr)
-# endif
- }
-
- else
- {
-# ifdef PNG_COLORSPACE_SUPPORTED
- /* Leave the INFO_iCCP flag set if the pngset.c code has already set
- * it; this allows a PNG to contain a profile which matches sRGB and
- * yet still have that profile retrievable by the application.
- */
- if (info_ptr->colorspace.flags & PNG_COLORSPACE_MATCHES_sRGB)
- info_ptr->valid |= PNG_INFO_sRGB;
-
- else
- info_ptr->valid &= ~PNG_INFO_sRGB;
-
- if (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS)
- info_ptr->valid |= PNG_INFO_cHRM;
-
- else
- info_ptr->valid &= ~PNG_INFO_cHRM;
-# endif
-
- if (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA)
- info_ptr->valid |= PNG_INFO_gAMA;
-
- else
- info_ptr->valid &= ~PNG_INFO_gAMA;
- }
-}
-
-#ifdef PNG_READ_SUPPORTED
-void /* PRIVATE */
-png_colorspace_sync(png_const_structrp png_ptr, png_inforp info_ptr)
-{
- if (info_ptr == NULL) /* reduce code size; check here not in the caller */
- return;
-
- info_ptr->colorspace = png_ptr->colorspace;
- png_colorspace_sync_info(png_ptr, info_ptr);
-}
-#endif
-#endif
-
-#ifdef PNG_COLORSPACE_SUPPORTED
-/* Added at libpng-1.5.5 to support read and write of true CIEXYZ values for
- * cHRM, as opposed to using chromaticities. These internal APIs return
- * non-zero on a parameter error. The X, Y and Z values are required to be
- * positive and less than 1.0.
- */
-static int
-png_xy_from_XYZ(png_xy *xy, const png_XYZ *XYZ)
-{
- png_int_32 d, dwhite, whiteX, whiteY;
-
- d = XYZ->red_X + XYZ->red_Y + XYZ->red_Z;
- if (!png_muldiv(&xy->redx, XYZ->red_X, PNG_FP_1, d)) return 1;
- if (!png_muldiv(&xy->redy, XYZ->red_Y, PNG_FP_1, d)) return 1;
- dwhite = d;
- whiteX = XYZ->red_X;
- whiteY = XYZ->red_Y;
-
- d = XYZ->green_X + XYZ->green_Y + XYZ->green_Z;
- if (!png_muldiv(&xy->greenx, XYZ->green_X, PNG_FP_1, d)) return 1;
- if (!png_muldiv(&xy->greeny, XYZ->green_Y, PNG_FP_1, d)) return 1;
- dwhite += d;
- whiteX += XYZ->green_X;
- whiteY += XYZ->green_Y;
-
- d = XYZ->blue_X + XYZ->blue_Y + XYZ->blue_Z;
- if (!png_muldiv(&xy->bluex, XYZ->blue_X, PNG_FP_1, d)) return 1;
- if (!png_muldiv(&xy->bluey, XYZ->blue_Y, PNG_FP_1, d)) return 1;
- dwhite += d;
- whiteX += XYZ->blue_X;
- whiteY += XYZ->blue_Y;
-
- /* The reference white is simply the sum of the end-point (X,Y,Z) vectors,
- * thus:
- */
- if (!png_muldiv(&xy->whitex, whiteX, PNG_FP_1, dwhite)) return 1;
- if (!png_muldiv(&xy->whitey, whiteY, PNG_FP_1, dwhite)) return 1;
-
- return 0;
-}
-
-static int
-png_XYZ_from_xy(png_XYZ *XYZ, const png_xy *xy)
-{
- png_fixed_point red_inverse, green_inverse, blue_scale;
- png_fixed_point left, right, denominator;
-
- /* Check xy and, implicitly, z. Note that wide gamut color spaces typically
- * have end points with 0 tristimulus values (these are impossible end
- * points, but they are used to cover the possible colors.)
- */
- if (xy->redx < 0 || xy->redx > PNG_FP_1) return 1;
- if (xy->redy < 0 || xy->redy > PNG_FP_1-xy->redx) return 1;
- if (xy->greenx < 0 || xy->greenx > PNG_FP_1) return 1;
- if (xy->greeny < 0 || xy->greeny > PNG_FP_1-xy->greenx) return 1;
- if (xy->bluex < 0 || xy->bluex > PNG_FP_1) return 1;
- if (xy->bluey < 0 || xy->bluey > PNG_FP_1-xy->bluex) return 1;
- if (xy->whitex < 0 || xy->whitex > PNG_FP_1) return 1;
- if (xy->whitey < 0 || xy->whitey > PNG_FP_1-xy->whitex) return 1;
-
- /* The reverse calculation is more difficult because the original tristimulus
- * value had 9 independent values (red,green,blue)x(X,Y,Z) however only 8
- * derived values were recorded in the cHRM chunk;
- * (red,green,blue,white)x(x,y). This loses one degree of freedom and
- * therefore an arbitrary ninth value has to be introduced to undo the
- * original transformations.
- *
- * Think of the original end-points as points in (X,Y,Z) space. The
- * chromaticity values (c) have the property:
- *
- * C
- * c = ---------
- * X + Y + Z
- *
- * For each c (x,y,z) from the corresponding original C (X,Y,Z). Thus the
- * three chromaticity values (x,y,z) for each end-point obey the
- * relationship:
- *
- * x + y + z = 1
- *
- * This describes the plane in (X,Y,Z) space that intersects each axis at the
- * value 1.0; call this the chromaticity plane. Thus the chromaticity
- * calculation has scaled each end-point so that it is on the x+y+z=1 plane
- * and chromaticity is the intersection of the vector from the origin to the
- * (X,Y,Z) value with the chromaticity plane.
- *
- * To fully invert the chromaticity calculation we would need the three
- * end-point scale factors, (red-scale, green-scale, blue-scale), but these
- * were not recorded. Instead we calculated the reference white (X,Y,Z) and
- * recorded the chromaticity of this. The reference white (X,Y,Z) would have
- * given all three of the scale factors since:
- *
- * color-C = color-c * color-scale
- * white-C = red-C + green-C + blue-C
- * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale
- *
- * But cHRM records only white-x and white-y, so we have lost the white scale
- * factor:
- *
- * white-C = white-c*white-scale
- *
- * To handle this the inverse transformation makes an arbitrary assumption
- * about white-scale:
- *
- * Assume: white-Y = 1.0
- * Hence: white-scale = 1/white-y
- * Or: red-Y + green-Y + blue-Y = 1.0
- *
- * Notice the last statement of the assumption gives an equation in three of
- * the nine values we want to calculate. 8 more equations come from the
- * above routine as summarised at the top above (the chromaticity
- * calculation):
- *
- * Given: color-x = color-X / (color-X + color-Y + color-Z)
- * Hence: (color-x - 1)*color-X + color.x*color-Y + color.x*color-Z = 0
- *
- * This is 9 simultaneous equations in the 9 variables "color-C" and can be
- * solved by Cramer's rule. Cramer's rule requires calculating 10 9x9 matrix
- * determinants, however this is not as bad as it seems because only 28 of
- * the total of 90 terms in the various matrices are non-zero. Nevertheless
- * Cramer's rule is notoriously numerically unstable because the determinant
- * calculation involves the difference of large, but similar, numbers. It is
- * difficult to be sure that the calculation is stable for real world values
- * and it is certain that it becomes unstable where the end points are close
- * together.
- *
- * So this code uses the perhaps slightly less optimal but more
- * understandable and totally obvious approach of calculating color-scale.
- *
- * This algorithm depends on the precision in white-scale and that is
- * (1/white-y), so we can immediately see that as white-y approaches 0 the
- * accuracy inherent in the cHRM chunk drops off substantially.
- *
- * libpng arithmetic: a simple invertion of the above equations
- * ------------------------------------------------------------
- *
- * white_scale = 1/white-y
- * white-X = white-x * white-scale
- * white-Y = 1.0
- * white-Z = (1 - white-x - white-y) * white_scale
- *
- * white-C = red-C + green-C + blue-C
- * = red-c*red-scale + green-c*green-scale + blue-c*blue-scale
- *
- * This gives us three equations in (red-scale,green-scale,blue-scale) where
- * all the coefficients are now known:
- *
- * red-x*red-scale + green-x*green-scale + blue-x*blue-scale
- * = white-x/white-y
- * red-y*red-scale + green-y*green-scale + blue-y*blue-scale = 1
- * red-z*red-scale + green-z*green-scale + blue-z*blue-scale
- * = (1 - white-x - white-y)/white-y
- *
- * In the last equation color-z is (1 - color-x - color-y) so we can add all
- * three equations together to get an alternative third:
- *
- * red-scale + green-scale + blue-scale = 1/white-y = white-scale
- *
- * So now we have a Cramer's rule solution where the determinants are just
- * 3x3 - far more tractible. Unfortunately 3x3 determinants still involve
- * multiplication of three coefficients so we can't guarantee to avoid
- * overflow in the libpng fixed point representation. Using Cramer's rule in
- * floating point is probably a good choice here, but it's not an option for
- * fixed point. Instead proceed to simplify the first two equations by
- * eliminating what is likely to be the largest value, blue-scale:
- *
- * blue-scale = white-scale - red-scale - green-scale
- *
- * Hence:
- *
- * (red-x - blue-x)*red-scale + (green-x - blue-x)*green-scale =
- * (white-x - blue-x)*white-scale
- *
- * (red-y - blue-y)*red-scale + (green-y - blue-y)*green-scale =
- * 1 - blue-y*white-scale
- *
- * And now we can trivially solve for (red-scale,green-scale):
- *
- * green-scale =
- * (white-x - blue-x)*white-scale - (red-x - blue-x)*red-scale
- * -----------------------------------------------------------
- * green-x - blue-x
- *
- * red-scale =
- * 1 - blue-y*white-scale - (green-y - blue-y) * green-scale
- * ---------------------------------------------------------
- * red-y - blue-y
- *
- * Hence:
- *
- * red-scale =
- * ( (green-x - blue-x) * (white-y - blue-y) -
- * (green-y - blue-y) * (white-x - blue-x) ) / white-y
- * -------------------------------------------------------------------------
- * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x)
- *
- * green-scale =
- * ( (red-y - blue-y) * (white-x - blue-x) -
- * (red-x - blue-x) * (white-y - blue-y) ) / white-y
- * -------------------------------------------------------------------------
- * (green-x - blue-x)*(red-y - blue-y)-(green-y - blue-y)*(red-x - blue-x)
- *
- * Accuracy:
- * The input values have 5 decimal digits of accuracy. The values are all in
- * the range 0 < value < 1, so simple products are in the same range but may
- * need up to 10 decimal digits to preserve the original precision and avoid
- * underflow. Because we are using a 32-bit signed representation we cannot
- * match this; the best is a little over 9 decimal digits, less than 10.
- *
- * The approach used here is to preserve the maximum precision within the
- * signed representation. Because the red-scale calculation above uses the
- * difference between two products of values that must be in the range -1..+1
- * it is sufficient to divide the product by 7; ceil(100,000/32767*2). The
- * factor is irrelevant in the calculation because it is applied to both
- * numerator and denominator.
- *
- * Note that the values of the differences of the products of the
- * chromaticities in the above equations tend to be small, for example for
- * the sRGB chromaticities they are:
- *
- * red numerator: -0.04751
- * green numerator: -0.08788
- * denominator: -0.2241 (without white-y multiplication)
- *
- * The resultant Y coefficients from the chromaticities of some widely used
- * color space definitions are (to 15 decimal places):
- *
- * sRGB
- * 0.212639005871510 0.715168678767756 0.072192315360734
- * Kodak ProPhoto
- * 0.288071128229293 0.711843217810102 0.000085653960605
- * Adobe RGB
- * 0.297344975250536 0.627363566255466 0.075291458493998
- * Adobe Wide Gamut RGB
- * 0.258728243040113 0.724682314948566 0.016589442011321
- */
- /* By the argument, above overflow should be impossible here. The return
- * value of 2 indicates an internal error to the caller.
- */
- if (!png_muldiv(&left, xy->greenx-xy->bluex, xy->redy - xy->bluey, 7))
- return 2;
- if (!png_muldiv(&right, xy->greeny-xy->bluey, xy->redx - xy->bluex, 7))
- return 2;
- denominator = left - right;
-
- /* Now find the red numerator. */
- if (!png_muldiv(&left, xy->greenx-xy->bluex, xy->whitey-xy->bluey, 7))
- return 2;
- if (!png_muldiv(&right, xy->greeny-xy->bluey, xy->whitex-xy->bluex, 7))
- return 2;
-
- /* Overflow is possible here and it indicates an extreme set of PNG cHRM
- * chunk values. This calculation actually returns the reciprocal of the
- * scale value because this allows us to delay the multiplication of white-y
- * into the denominator, which tends to produce a small number.
- */
- if (!png_muldiv(&red_inverse, xy->whitey, denominator, left-right) ||
- red_inverse <= xy->whitey /* r+g+b scales = white scale */)
- return 1;
-
- /* Similarly for green_inverse: */
- if (!png_muldiv(&left, xy->redy-xy->bluey, xy->whitex-xy->bluex, 7))
- return 2;
- if (!png_muldiv(&right, xy->redx-xy->bluex, xy->whitey-xy->bluey, 7))
- return 2;
- if (!png_muldiv(&green_inverse, xy->whitey, denominator, left-right) ||
- green_inverse <= xy->whitey)
- return 1;
-
- /* And the blue scale, the checks above guarantee this can't overflow but it
- * can still produce 0 for extreme cHRM values.
- */
- blue_scale = png_reciprocal(xy->whitey) - png_reciprocal(red_inverse) -
- png_reciprocal(green_inverse);
- if (blue_scale <= 0) return 1;
-
-
- /* And fill in the png_XYZ: */
- if (!png_muldiv(&XYZ->red_X, xy->redx, PNG_FP_1, red_inverse)) return 1;
- if (!png_muldiv(&XYZ->red_Y, xy->redy, PNG_FP_1, red_inverse)) return 1;
- if (!png_muldiv(&XYZ->red_Z, PNG_FP_1 - xy->redx - xy->redy, PNG_FP_1,
- red_inverse))
- return 1;
-
- if (!png_muldiv(&XYZ->green_X, xy->greenx, PNG_FP_1, green_inverse))
- return 1;
- if (!png_muldiv(&XYZ->green_Y, xy->greeny, PNG_FP_1, green_inverse))
- return 1;
- if (!png_muldiv(&XYZ->green_Z, PNG_FP_1 - xy->greenx - xy->greeny, PNG_FP_1,
- green_inverse))
- return 1;
-
- if (!png_muldiv(&XYZ->blue_X, xy->bluex, blue_scale, PNG_FP_1)) return 1;
- if (!png_muldiv(&XYZ->blue_Y, xy->bluey, blue_scale, PNG_FP_1)) return 1;
- if (!png_muldiv(&XYZ->blue_Z, PNG_FP_1 - xy->bluex - xy->bluey, blue_scale,
- PNG_FP_1))
- return 1;
-
- return 0; /*success*/
-}
-
-static int
-png_XYZ_normalize(png_XYZ *XYZ)
-{
- png_int_32 Y;
-
- if (XYZ->red_Y < 0 || XYZ->green_Y < 0 || XYZ->blue_Y < 0 ||
- XYZ->red_X < 0 || XYZ->green_X < 0 || XYZ->blue_X < 0 ||
- XYZ->red_Z < 0 || XYZ->green_Z < 0 || XYZ->blue_Z < 0)
- return 1;
-
- /* Normalize by scaling so the sum of the end-point Y values is PNG_FP_1.
- * IMPLEMENTATION NOTE: ANSI requires signed overflow not to occur, therefore
- * relying on addition of two positive values producing a negative one is not
- * safe.
- */
- Y = XYZ->red_Y;
- if (0x7fffffff - Y < XYZ->green_X) return 1;
- Y += XYZ->green_Y;
- if (0x7fffffff - Y < XYZ->blue_X) return 1;
- Y += XYZ->blue_Y;
-
- if (Y != PNG_FP_1)
- {
- if (!png_muldiv(&XYZ->red_X, XYZ->red_X, PNG_FP_1, Y)) return 1;
- if (!png_muldiv(&XYZ->red_Y, XYZ->red_Y, PNG_FP_1, Y)) return 1;
- if (!png_muldiv(&XYZ->red_Z, XYZ->red_Z, PNG_FP_1, Y)) return 1;
-
- if (!png_muldiv(&XYZ->green_X, XYZ->green_X, PNG_FP_1, Y)) return 1;
- if (!png_muldiv(&XYZ->green_Y, XYZ->green_Y, PNG_FP_1, Y)) return 1;
- if (!png_muldiv(&XYZ->green_Z, XYZ->green_Z, PNG_FP_1, Y)) return 1;
-
- if (!png_muldiv(&XYZ->blue_X, XYZ->blue_X, PNG_FP_1, Y)) return 1;
- if (!png_muldiv(&XYZ->blue_Y, XYZ->blue_Y, PNG_FP_1, Y)) return 1;
- if (!png_muldiv(&XYZ->blue_Z, XYZ->blue_Z, PNG_FP_1, Y)) return 1;
- }
-
- return 0;
-}
-
-static int
-png_colorspace_endpoints_match(const png_xy *xy1, const png_xy *xy2, int delta)
-{
- /* Allow an error of +/-0.01 (absolute value) on each chromaticity */
- return !(PNG_OUT_OF_RANGE(xy1->whitex, xy2->whitex,delta) ||
- PNG_OUT_OF_RANGE(xy1->whitey, xy2->whitey,delta) ||
- PNG_OUT_OF_RANGE(xy1->redx, xy2->redx, delta) ||
- PNG_OUT_OF_RANGE(xy1->redy, xy2->redy, delta) ||
- PNG_OUT_OF_RANGE(xy1->greenx, xy2->greenx,delta) ||
- PNG_OUT_OF_RANGE(xy1->greeny, xy2->greeny,delta) ||
- PNG_OUT_OF_RANGE(xy1->bluex, xy2->bluex, delta) ||
- PNG_OUT_OF_RANGE(xy1->bluey, xy2->bluey, delta));
-}
-
-/* Added in libpng-1.6.0, a different check for the validity of a set of cHRM
- * chunk chromaticities. Earlier checks used to simply look for the overflow
- * condition (where the determinant of the matrix to solve for XYZ ends up zero
- * because the chromaticity values are not all distinct.) Despite this it is
- * theoretically possible to produce chromaticities that are apparently valid
- * but that rapidly degrade to invalid, potentially crashing, sets because of
- * arithmetic inaccuracies when calculations are performed on them. The new
- * check is to round-trip xy -> XYZ -> xy and then check that the result is
- * within a small percentage of the original.
- */
-static int
-png_colorspace_check_xy(png_XYZ *XYZ, const png_xy *xy)
-{
- int result;
- png_xy xy_test;
-
- /* As a side-effect this routine also returns the XYZ endpoints. */
- result = png_XYZ_from_xy(XYZ, xy);
- if (result) return result;
-
- result = png_xy_from_XYZ(&xy_test, XYZ);
- if (result) return result;
-
- if (png_colorspace_endpoints_match(xy, &xy_test,
- 5/*actually, the math is pretty accurate*/))
- return 0;
-
- /* Too much slip */
- return 1;
-}
-
-/* This is the check going the other way. The XYZ is modified to normalize it
- * (another side-effect) and the xy chromaticities are returned.
- */
-static int
-png_colorspace_check_XYZ(png_xy *xy, png_XYZ *XYZ)
-{
- int result;
- png_XYZ XYZtemp;
-
- result = png_XYZ_normalize(XYZ);
- if (result) return result;
-
- result = png_xy_from_XYZ(xy, XYZ);
- if (result) return result;
-
- XYZtemp = *XYZ;
- return png_colorspace_check_xy(&XYZtemp, xy);
-}
-
-/* Used to check for an endpoint match against sRGB */
-static const png_xy sRGB_xy = /* From ITU-R BT.709-3 */
-{
- /* color x y */
- /* red */ 64000, 33000,
- /* green */ 30000, 60000,
- /* blue */ 15000, 6000,
- /* white */ 31270, 32900
-};
-
-static int
-png_colorspace_set_xy_and_XYZ(png_const_structrp png_ptr,
- png_colorspacerp colorspace, const png_xy *xy, const png_XYZ *XYZ,
- int preferred)
-{
- if (colorspace->flags & PNG_COLORSPACE_INVALID)
- return 0;
-
- /* The consistency check is performed on the chromaticities; this factors out
- * variations because of the normalization (or not) of the end point Y
- * values.
- */
- if (preferred < 2 && (colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
- {
- /* The end points must be reasonably close to any we already have. The
- * following allows an error of up to +/-.001
- */
- if (!png_colorspace_endpoints_match(xy, &colorspace->end_points_xy, 100))
- {
- colorspace->flags |= PNG_COLORSPACE_INVALID;
- png_benign_error(png_ptr, "inconsistent chromaticities");
- return 0; /* failed */
- }
-
- /* Only overwrite with preferred values */
- if (!preferred)
- return 1; /* ok, but no change */
- }
-
- colorspace->end_points_xy = *xy;
- colorspace->end_points_XYZ = *XYZ;
- colorspace->flags |= PNG_COLORSPACE_HAVE_ENDPOINTS;
-
- /* The end points are normally quoted to two decimal digits, so allow +/-0.01
- * on this test.
- */
- if (png_colorspace_endpoints_match(xy, &sRGB_xy, 1000))
- colorspace->flags |= PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB;
-
- else
- colorspace->flags &= PNG_COLORSPACE_CANCEL(
- PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB);
-
- return 2; /* ok and changed */
-}
-
-int /* PRIVATE */
-png_colorspace_set_chromaticities(png_const_structrp png_ptr,
- png_colorspacerp colorspace, const png_xy *xy, int preferred)
-{
- /* We must check the end points to ensure they are reasonable - in the past
- * color management systems have crashed as a result of getting bogus
- * colorant values, while this isn't the fault of libpng it is the
- * responsibility of libpng because PNG carries the bomb and libpng is in a
- * position to protect against it.
- */
- png_XYZ XYZ;
-
- switch (png_colorspace_check_xy(&XYZ, xy))
- {
- case 0: /* success */
- return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, xy, &XYZ,
- preferred);
-
- case 1:
- /* We can't invert the chromaticities so we can't produce value XYZ
- * values. Likely as not a color management system will fail too.
- */
- colorspace->flags |= PNG_COLORSPACE_INVALID;
- png_benign_error(png_ptr, "invalid chromaticities");
- break;
-
- default:
- /* libpng is broken; this should be a warning but if it happens we
- * want error reports so for the moment it is an error.
- */
- colorspace->flags |= PNG_COLORSPACE_INVALID;
- png_error(png_ptr, "internal error checking chromaticities");
- break;
- }
-
- return 0; /* failed */
-}
-
-int /* PRIVATE */
-png_colorspace_set_endpoints(png_const_structrp png_ptr,
- png_colorspacerp colorspace, const png_XYZ *XYZ_in, int preferred)
-{
- png_XYZ XYZ = *XYZ_in;
- png_xy xy;
-
- switch (png_colorspace_check_XYZ(&xy, &XYZ))
- {
- case 0:
- return png_colorspace_set_xy_and_XYZ(png_ptr, colorspace, &xy, &XYZ,
- preferred);
-
- case 1:
- /* End points are invalid. */
- colorspace->flags |= PNG_COLORSPACE_INVALID;
- png_benign_error(png_ptr, "invalid end points");
- break;
-
- default:
- colorspace->flags |= PNG_COLORSPACE_INVALID;
- png_error(png_ptr, "internal error checking chromaticities");
- break;
- }
-
- return 0; /* failed */
-}
-
-#if defined(PNG_sRGB_SUPPORTED) || defined(PNG_iCCP_SUPPORTED)
-/* Error message generation */
-static char
-png_icc_tag_char(png_uint_32 byte)
-{
- byte &= 0xff;
- if (byte >= 32 && byte <= 126)
- return (char)byte;
- else
- return '?';
-}
-
-static void
-png_icc_tag_name(char *name, png_uint_32 tag)
-{
- name[0] = '\'';
- name[1] = png_icc_tag_char(tag >> 24);
- name[2] = png_icc_tag_char(tag >> 16);
- name[3] = png_icc_tag_char(tag >> 8);
- name[4] = png_icc_tag_char(tag );
- name[5] = '\'';
-}
-
-static int
-is_ICC_signature_char(png_alloc_size_t it)
-{
- return it == 32 || (it >= 48 && it <= 57) || (it >= 65 && it <= 90) ||
- (it >= 97 && it <= 122);
-}
-
-static int is_ICC_signature(png_alloc_size_t it)
-{
- return is_ICC_signature_char(it >> 24) /* checks all the top bits */ &&
- is_ICC_signature_char((it >> 16) & 0xff) &&
- is_ICC_signature_char((it >> 8) & 0xff) &&
- is_ICC_signature_char(it & 0xff);
-}
-
-static int
-png_icc_profile_error(png_const_structrp png_ptr, png_colorspacerp colorspace,
- png_const_charp name, png_alloc_size_t value, png_const_charp reason)
-{
- size_t pos;
- char message[196]; /* see below for calculation */
-
- if (colorspace != NULL)
- colorspace->flags |= PNG_COLORSPACE_INVALID;
-
- pos = png_safecat(message, (sizeof message), 0, "profile '"); /* 9 chars */
- pos = png_safecat(message, pos+79, pos, name); /* Truncate to 79 chars */
- pos = png_safecat(message, (sizeof message), pos, "': "); /* +2 = 90 */
- if (is_ICC_signature(value))
- {
- /* So 'value' is at most 4 bytes and the following cast is safe */
- png_icc_tag_name(message+pos, (png_uint_32)value);
- pos += 6; /* total +8; less than the else clause */
- message[pos++] = ':';
- message[pos++] = ' ';
- }
-# ifdef PNG_WARNINGS_SUPPORTED
- else
- {
- char number[PNG_NUMBER_BUFFER_SIZE]; /* +24 = 114*/
-
- pos = png_safecat(message, (sizeof message), pos,
- png_format_number(number, number+(sizeof number),
- PNG_NUMBER_FORMAT_x, value));
- pos = png_safecat(message, (sizeof message), pos, "h: "); /*+2 = 116*/
- }
-# endif
- /* The 'reason' is an arbitrary message, allow +79 maximum 195 */
- pos = png_safecat(message, (sizeof message), pos, reason);
-
- /* This is recoverable, but make it unconditionally an app_error on write to
- * avoid writing invalid ICC profiles into PNG files. (I.e. we handle them
- * on read, with a warning, but on write unless the app turns off
- * application errors the PNG won't be written.)
- */
- png_chunk_report(png_ptr, message,
- (colorspace != NULL) ? PNG_CHUNK_ERROR : PNG_CHUNK_WRITE_ERROR);
-
- return 0;
-}
-#endif /* sRGB || iCCP */
-
-#ifdef PNG_sRGB_SUPPORTED
-int /* PRIVATE */
-png_colorspace_set_sRGB(png_const_structrp png_ptr, png_colorspacerp colorspace,
- int intent)
-{
- /* sRGB sets known gamma, end points and (from the chunk) intent. */
- /* IMPORTANT: these are not necessarily the values found in an ICC profile
- * because ICC profiles store values adapted to a D50 environment; it is
- * expected that the ICC profile mediaWhitePointTag will be D50, see the
- * checks and code elsewhere to understand this better.
- *
- * These XYZ values, which are accurate to 5dp, produce rgb to gray
- * coefficients of (6968,23435,2366), which are reduced (because they add up
- * to 32769 not 32768) to (6968,23434,2366). These are the values that
- * libpng has traditionally used (and are the best values given the 15bit
- * algorithm used by the rgb to gray code.)
- */
- static const png_XYZ sRGB_XYZ = /* D65 XYZ (*not* the D50 adapted values!) */
- {
- /* color X Y Z */
- /* red */ 41239, 21264, 1933,
- /* green */ 35758, 71517, 11919,
- /* blue */ 18048, 7219, 95053
- };
-
- /* Do nothing if the colorspace is already invalidated. */
- if (colorspace->flags & PNG_COLORSPACE_INVALID)
- return 0;
-
- /* Check the intent, then check for existing settings. It is valid for the
- * PNG file to have cHRM or gAMA chunks along with sRGB, but the values must
- * be consistent with the correct values. If, however, this function is
- * called below because an iCCP chunk matches sRGB then it is quite
- * conceivable that an older app recorded incorrect gAMA and cHRM because of
- * an incorrect calculation based on the values in the profile - this does
- * *not* invalidate the profile (though it still produces an error, which can
- * be ignored.)
- */
- if (intent < 0 || intent >= PNG_sRGB_INTENT_LAST)
- return png_icc_profile_error(png_ptr, colorspace, "sRGB",
- (unsigned)intent, "invalid sRGB rendering intent");
-
- if ((colorspace->flags & PNG_COLORSPACE_HAVE_INTENT) != 0 &&
- colorspace->rendering_intent != intent)
- return png_icc_profile_error(png_ptr, colorspace, "sRGB",
- (unsigned)intent, "inconsistent rendering intents");
-
- if ((colorspace->flags & PNG_COLORSPACE_FROM_sRGB) != 0)
- {
- png_benign_error(png_ptr, "duplicate sRGB information ignored");
- return 0;
- }
-
- /* If the standard sRGB cHRM chunk does not match the one from the PNG file
- * warn but overwrite the value with the correct one.
- */
- if ((colorspace->flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0 &&
- !png_colorspace_endpoints_match(&sRGB_xy, &colorspace->end_points_xy,
- 100))
- png_chunk_report(png_ptr, "cHRM chunk does not match sRGB",
- PNG_CHUNK_ERROR);
-
- /* This check is just done for the error reporting - the routine always
- * returns true when the 'from' argument corresponds to sRGB (2).
- */
- (void)png_colorspace_check_gamma(png_ptr, colorspace, PNG_GAMMA_sRGB_INVERSE,
- 2/*from sRGB*/);
-
- /* intent: bugs in GCC force 'int' to be used as the parameter type. */
- colorspace->rendering_intent = (png_uint_16)intent;
- colorspace->flags |= PNG_COLORSPACE_HAVE_INTENT;
-
- /* endpoints */
- colorspace->end_points_xy = sRGB_xy;
- colorspace->end_points_XYZ = sRGB_XYZ;
- colorspace->flags |=
- (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB);
-
- /* gamma */
- colorspace->gamma = PNG_GAMMA_sRGB_INVERSE;
- colorspace->flags |= PNG_COLORSPACE_HAVE_GAMMA;
-
- /* Finally record that we have an sRGB profile */
- colorspace->flags |=
- (PNG_COLORSPACE_MATCHES_sRGB|PNG_COLORSPACE_FROM_sRGB);
-
- return 1; /* set */
-}
-#endif /* sRGB */
-
-#ifdef PNG_iCCP_SUPPORTED
-/* Encoded value of D50 as an ICC XYZNumber. From the ICC 2010 spec the value
- * is XYZ(0.9642,1.0,0.8249), which scales to:
- *
- * (63189.8112, 65536, 54060.6464)
- */
-static const png_byte D50_nCIEXYZ[12] =
- { 0x00, 0x00, 0xf6, 0xd6, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0xd3, 0x2d };
-
-int /* PRIVATE */
-png_icc_check_length(png_const_structrp png_ptr, png_colorspacerp colorspace,
- png_const_charp name, png_uint_32 profile_length)
-{
- if (profile_length < 132)
- return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
- "too short");
-
- if (profile_length & 3)
- return png_icc_profile_error(png_ptr, colorspace, name, profile_length,
- "invalid length");
-
- return 1;
-}
-
-int /* PRIVATE */
-png_icc_check_header(png_const_structrp png_ptr, png_colorspacerp colorspace,
- png_const_charp name, png_uint_32 profile_length,
- png_const_bytep profile/* first 132 bytes only */, int color_type)
-{
- png_uint_32 temp;
-
- /* Length check; this cannot be ignored in this code because profile_length
- * is used later to check the tag table, so even if the profile seems over
- * long profile_length from the caller must be correct. The caller can fix
- * this up on read or write by just passing in the profile header length.
- */
- temp = png_get_uint_32(profile);
- if (temp != profile_length)
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "length does not match profile");
-
- temp = png_get_uint_32(profile+128); /* tag count: 12 bytes/tag */
- if (temp > 357913930 || /* (2^32-4-132)/12: maximum possible tag count */
- profile_length < 132+12*temp) /* truncated tag table */
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "tag count too large");
-
- /* The 'intent' must be valid or we can't store it, ICC limits the intent to
- * 16 bits.
- */
- temp = png_get_uint_32(profile+64);
- if (temp >= 0xffff) /* The ICC limit */
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "invalid rendering intent");
-
- /* This is just a warning because the profile may be valid in future
- * versions.
- */
- if (temp >= PNG_sRGB_INTENT_LAST)
- (void)png_icc_profile_error(png_ptr, NULL, name, temp,
- "intent outside defined range");
-
- /* At this point the tag table can't be checked because it hasn't necessarily
- * been loaded; however, various header fields can be checked. These checks
- * are for values permitted by the PNG spec in an ICC profile; the PNG spec
- * restricts the profiles that can be passed in an iCCP chunk (they must be
- * appropriate to processing PNG data!)
- */
-
- /* Data checks (could be skipped). These checks must be independent of the
- * version number; however, the version number doesn't accomodate changes in
- * the header fields (just the known tags and the interpretation of the
- * data.)
- */
- temp = png_get_uint_32(profile+36); /* signature 'ascp' */
- if (temp != 0x61637370)
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "invalid signature");
-
- /* Currently the PCS illuminant/adopted white point (the computational
- * white point) are required to be D50,
- * however the profile contains a record of the illuminant so perhaps ICC
- * expects to be able to change this in the future (despite the rationale in
- * the introduction for using a fixed PCS adopted white.) Consequently the
- * following is just a warning.
- */
- if (memcmp(profile+68, D50_nCIEXYZ, 12) != 0)
- (void)png_icc_profile_error(png_ptr, NULL, name, 0/*no tag value*/,
- "PCS illuminant is not D50");
-
- /* The PNG spec requires this:
- * "If the iCCP chunk is present, the image samples conform to the colour
- * space represented by the embedded ICC profile as defined by the
- * International Color Consortium [ICC]. The colour space of the ICC profile
- * shall be an RGB colour space for colour images (PNG colour types 2, 3, and
- * 6), or a greyscale colour space for greyscale images (PNG colour types 0
- * and 4)."
- *
- * This checking code ensures the embedded profile (on either read or write)
- * conforms to the specification requirements. Notice that an ICC 'gray'
- * color-space profile contains the information to transform the monochrome
- * data to XYZ or L*a*b (according to which PCS the profile uses) and this
- * should be used in preference to the standard libpng K channel replication
- * into R, G and B channels.
- *
- * Previously it was suggested that an RGB profile on grayscale data could be
- * handled. However it it is clear that using an RGB profile in this context
- * must be an error - there is no specification of what it means. Thus it is
- * almost certainly more correct to ignore the profile.
- */
- temp = png_get_uint_32(profile+16); /* data colour space field */
- switch (temp)
- {
- case 0x52474220: /* 'RGB ' */
- if (!(color_type & PNG_COLOR_MASK_COLOR))
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "RGB color space not permitted on grayscale PNG");
- break;
-
- case 0x47524159: /* 'GRAY' */
- if (color_type & PNG_COLOR_MASK_COLOR)
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "Gray color space not permitted on RGB PNG");
- break;
-
- default:
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "invalid ICC profile color space");
- }
-
- /* It is up to the application to check that the profile class matches the
- * application requirements; the spec provides no guidance, but it's pretty
- * weird if the profile is not scanner ('scnr'), monitor ('mntr'), printer
- * ('prtr') or 'spac' (for generic color spaces). Issue a warning in these
- * cases. Issue an error for device link or abstract profiles - these don't
- * contain the records necessary to transform the color-space to anything
- * other than the target device (and not even that for an abstract profile).
- * Profiles of these classes may not be embedded in images.
- */
- temp = png_get_uint_32(profile+12); /* profile/device class */
- switch (temp)
- {
- case 0x73636E72: /* 'scnr' */
- case 0x6D6E7472: /* 'mntr' */
- case 0x70727472: /* 'prtr' */
- case 0x73706163: /* 'spac' */
- /* All supported */
- break;
-
- case 0x61627374: /* 'abst' */
- /* May not be embedded in an image */
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "invalid embedded Abstract ICC profile");
-
- case 0x6C696E6B: /* 'link' */
- /* DeviceLink profiles cannnot be interpreted in a non-device specific
- * fashion, if an app uses the AToB0Tag in the profile the results are
- * undefined unless the result is sent to the intended device,
- * therefore a DeviceLink profile should not be found embedded in a
- * PNG.
- */
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "unexpected DeviceLink ICC profile class");
-
- case 0x6E6D636C: /* 'nmcl' */
- /* A NamedColor profile is also device specific, however it doesn't
- * contain an AToB0 tag that is open to misintrepretation. Almost
- * certainly it will fail the tests below.
- */
- (void)png_icc_profile_error(png_ptr, NULL, name, temp,
- "unexpected NamedColor ICC profile class");
- break;
-
- default:
- /* To allow for future enhancements to the profile accept unrecognized
- * profile classes with a warning, these then hit the test below on the
- * tag content to ensure they are backward compatible with one of the
- * understood profiles.
- */
- (void)png_icc_profile_error(png_ptr, NULL, name, temp,
- "unrecognized ICC profile class");
- break;
- }
-
- /* For any profile other than a device link one the PCS must be encoded
- * either in XYZ or Lab.
- */
- temp = png_get_uint_32(profile+20);
- switch (temp)
- {
- case 0x58595A20: /* 'XYZ ' */
- case 0x4C616220: /* 'Lab ' */
- break;
-
- default:
- return png_icc_profile_error(png_ptr, colorspace, name, temp,
- "unexpected ICC PCS encoding");
- }
-
- return 1;
-}
-
-int /* PRIVATE */
-png_icc_check_tag_table(png_const_structrp png_ptr, png_colorspacerp colorspace,
- png_const_charp name, png_uint_32 profile_length,
- png_const_bytep profile /* header plus whole tag table */)
-{
- png_uint_32 tag_count = png_get_uint_32(profile+128);
- png_uint_32 itag;
- png_const_bytep tag = profile+132; /* The first tag */
-
- /* First scan all the tags in the table and add bits to the icc_info value
- * (temporarily in 'tags').
- */
- for (itag=0; itag < tag_count; ++itag, tag += 12)
- {
- png_uint_32 tag_id = png_get_uint_32(tag+0);
- png_uint_32 tag_start = png_get_uint_32(tag+4); /* must be aligned */
- png_uint_32 tag_length = png_get_uint_32(tag+8);/* not padded */
-
- /* The ICC specification does not exclude zero length tags, therefore the
- * start might actually be anywhere if there is no data, but this would be
- * a clear abuse of the intent of the standard so the start is checked for
- * being in range. All defined tag types have an 8 byte header - a 4 byte
- * type signature then 0.
- */
- if ((tag_start & 3) != 0)
- {
- /* CNHP730S.icc shipped with Microsoft Windows 64 violates this, it is
- * only a warning here because libpng does not care about the
- * alignment.
- */
- (void)png_icc_profile_error(png_ptr, NULL, name, tag_id,
- "ICC profile tag start not a multiple of 4");
- }
-
- /* This is a hard error; potentially it can cause read outside the
- * profile.
- */
- if (tag_start > profile_length || tag_length > profile_length - tag_start)
- return png_icc_profile_error(png_ptr, colorspace, name, tag_id,
- "ICC profile tag outside profile");
- }
-
- return 1; /* success, maybe with warnings */
-}
-
-#ifdef PNG_sRGB_SUPPORTED
-/* Information about the known ICC sRGB profiles */
-static const struct
-{
- png_uint_32 adler, crc, length;
- png_uint_32 md5[4];
- png_byte have_md5;
- png_byte is_broken;
- png_uint_16 intent;
-
-# define PNG_MD5(a,b,c,d) { a, b, c, d }, (a!=0)||(b!=0)||(c!=0)||(d!=0)
-# define PNG_ICC_CHECKSUM(adler, crc, md5, intent, broke, date, length, fname)\
- { adler, crc, length, md5, broke, intent },
-
-} png_sRGB_checks[] =
-{
- /* This data comes from contrib/tools/checksum-icc run on downloads of
- * all four ICC sRGB profiles from www.color.org.
- */
- /* adler32, crc32, MD5[4], intent, date, length, file-name */
- PNG_ICC_CHECKSUM(0x0a3fd9f6, 0x3b8772b9,
- PNG_MD5(0x29f83dde, 0xaff255ae, 0x7842fae4, 0xca83390d), 0, 0,
- "2009/03/27 21:36:31", 3048, "sRGB_IEC61966-2-1_black_scaled.icc")
-
- /* ICC sRGB v2 perceptual no black-compensation: */
- PNG_ICC_CHECKSUM(0x4909e5e1, 0x427ebb21,
- PNG_MD5(0xc95bd637, 0xe95d8a3b, 0x0df38f99, 0xc1320389), 1, 0,
- "2009/03/27 21:37:45", 3052, "sRGB_IEC61966-2-1_no_black_scaling.icc")
-
- PNG_ICC_CHECKSUM(0xfd2144a1, 0x306fd8ae,
- PNG_MD5(0xfc663378, 0x37e2886b, 0xfd72e983, 0x8228f1b8), 0, 0,
- "2009/08/10 17:28:01", 60988, "sRGB_v4_ICC_preference_displayclass.icc")
-
- /* ICC sRGB v4 perceptual */
- PNG_ICC_CHECKSUM(0x209c35d2, 0xbbef7812,
- PNG_MD5(0x34562abf, 0x994ccd06, 0x6d2c5721, 0xd0d68c5d), 0, 0,
- "2007/07/25 00:05:37", 60960, "sRGB_v4_ICC_preference.icc")
-
- /* The following profiles have no known MD5 checksum. If there is a match
- * on the (empty) MD5 the other fields are used to attempt a match and
- * a warning is produced. The first two of these profiles have a 'cprt' tag
- * which suggests that they were also made by Hewlett Packard.
- */
- PNG_ICC_CHECKSUM(0xa054d762, 0x5d5129ce,
- PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 0,
- "2004/07/21 18:57:42", 3024, "sRGB_IEC61966-2-1_noBPC.icc")
-
- /* This is a 'mntr' (display) profile with a mediaWhitePointTag that does not
- * match the D50 PCS illuminant in the header (it is in fact the D65 values,
- * so the white point is recorded as the un-adapted value.) The profiles
- * below only differ in one byte - the intent - and are basically the same as
- * the previous profile except for the mediaWhitePointTag error and a missing
- * chromaticAdaptationTag.
- */
- PNG_ICC_CHECKSUM(0xf784f3fb, 0x182ea552,
- PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 0, 1/*broken*/,
- "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 perceptual")
-
- PNG_ICC_CHECKSUM(0x0398f3fc, 0xf29e526d,
- PNG_MD5(0x00000000, 0x00000000, 0x00000000, 0x00000000), 1, 1/*broken*/,
- "1998/02/09 06:49:00", 3144, "HP-Microsoft sRGB v2 media-relative")
-};
-
-static int
-png_compare_ICC_profile_with_sRGB(png_const_structrp png_ptr,
- png_const_bytep profile, uLong adler)
-{
- /* The quick check is to verify just the MD5 signature and trust the
- * rest of the data. Because the profile has already been verified for
- * correctness this is safe. png_colorspace_set_sRGB will check the 'intent'
- * field too, so if the profile has been edited with an intent not defined
- * by sRGB (but maybe defined by a later ICC specification) the read of
- * the profile will fail at that point.
- */
- png_uint_32 length = 0;
- png_uint_32 intent = 0x10000; /* invalid */
-#if PNG_sRGB_PROFILE_CHECKS > 1
- uLong crc = 0; /* the value for 0 length data */
-#endif
- unsigned int i;
-
- for (i=0; i < (sizeof png_sRGB_checks) / (sizeof png_sRGB_checks[0]); ++i)
- {
- if (png_get_uint_32(profile+84) == png_sRGB_checks[i].md5[0] &&
- png_get_uint_32(profile+88) == png_sRGB_checks[i].md5[1] &&
- png_get_uint_32(profile+92) == png_sRGB_checks[i].md5[2] &&
- png_get_uint_32(profile+96) == png_sRGB_checks[i].md5[3])
- {
- /* This may be one of the old HP profiles without an MD5, in that
- * case we can only use the length and Adler32 (note that these
- * are not used by default if there is an MD5!)
- */
-# if PNG_sRGB_PROFILE_CHECKS == 0
- if (png_sRGB_checks[i].have_md5)
- return 1+png_sRGB_checks[i].is_broken;
-# endif
-
- /* Profile is unsigned or more checks have been configured in. */
- if (length == 0)
- {
- length = png_get_uint_32(profile);
- intent = png_get_uint_32(profile+64);
- }
-
- /* Length *and* intent must match */
- if (length == png_sRGB_checks[i].length &&
- intent == png_sRGB_checks[i].intent)
- {
- /* Now calculate the adler32 if not done already. */
- if (adler == 0)
- {
- adler = adler32(0, NULL, 0);
- adler = adler32(adler, profile, length);
- }
-
- if (adler == png_sRGB_checks[i].adler)
- {
- /* These basic checks suggest that the data has not been
- * modified, but if the check level is more than 1 perform
- * our own crc32 checksum on the data.
- */
-# if PNG_sRGB_PROFILE_CHECKS > 1
- if (crc == 0)
- {
- crc = crc32(0, NULL, 0);
- crc = crc32(crc, profile, length);
- }
-
- /* So this check must pass for the 'return' below to happen.
- */
- if (crc == png_sRGB_checks[i].crc)
-# endif
- {
- if (png_sRGB_checks[i].is_broken)
- {
- /* These profiles are known to have bad data that may cause
- * problems if they are used, therefore attempt to
- * discourage their use, skip the 'have_md5' warning below,
- * which is made irrelevant by this error.
- */
- png_chunk_report(png_ptr, "known incorrect sRGB profile",
- PNG_CHUNK_ERROR);
- }
-
- /* Warn that this being done; this isn't even an error since
- * the profile is perfectly valid, but it would be nice if
- * people used the up-to-date ones.
- */
- else if (!png_sRGB_checks[i].have_md5)
- {
- png_chunk_report(png_ptr,
- "out-of-date sRGB profile with no signature",
- PNG_CHUNK_WARNING);
- }
-
- return 1+png_sRGB_checks[i].is_broken;
- }
- }
- }
-
-# if PNG_sRGB_PROFILE_CHECKS > 0
- /* The signature matched, but the profile had been changed in some
- * way. This is an apparent violation of the ICC terms of use and,
- * anyway, probably indicates a data error or uninformed hacking.
- */
- if (png_sRGB_checks[i].have_md5)
- png_benign_error(png_ptr,
- "copyright violation: edited ICC profile ignored");
-# endif
- }
- }
-
- return 0; /* no match */
-}
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
-void /* PRIVATE */
-png_icc_set_sRGB(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_const_bytep profile, uLong adler)
-{
- /* Is this profile one of the known ICC sRGB profiles? If it is, just set
- * the sRGB information.
- */
- if (png_compare_ICC_profile_with_sRGB(png_ptr, profile, adler))
- (void)png_colorspace_set_sRGB(png_ptr, colorspace,
- (int)/*already checked*/png_get_uint_32(profile+64));
-}
-#endif /* PNG_READ_sRGB_SUPPORTED */
-
-int /* PRIVATE */
-png_colorspace_set_ICC(png_const_structrp png_ptr, png_colorspacerp colorspace,
- png_const_charp name, png_uint_32 profile_length, png_const_bytep profile,
- int color_type)
-{
- if (colorspace->flags & PNG_COLORSPACE_INVALID)
- return 0;
-
- if (png_icc_check_length(png_ptr, colorspace, name, profile_length) &&
- png_icc_check_header(png_ptr, colorspace, name, profile_length, profile,
- color_type) &&
- png_icc_check_tag_table(png_ptr, colorspace, name, profile_length,
- profile))
- {
-# ifdef PNG_sRGB_SUPPORTED
- /* If no sRGB support, don't try storing sRGB information */
- png_icc_set_sRGB(png_ptr, colorspace, profile, 0);
-# endif
- return 1;
- }
-
- /* Failure case */
- return 0;
-}
-#endif /* iCCP */
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-void /* PRIVATE */
-png_colorspace_set_rgb_coefficients(png_structrp png_ptr)
-{
- /* Set the rgb_to_gray coefficients from the colorspace. */
- if (!png_ptr->rgb_to_gray_coefficients_set &&
- (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS) != 0)
- {
- /* png_set_background has not been called, get the coefficients from the Y
- * values of the colorspace colorants.
- */
- png_fixed_point r = png_ptr->colorspace.end_points_XYZ.red_Y;
- png_fixed_point g = png_ptr->colorspace.end_points_XYZ.green_Y;
- png_fixed_point b = png_ptr->colorspace.end_points_XYZ.blue_Y;
- png_fixed_point total = r+g+b;
-
- if (total > 0 &&
- r >= 0 && png_muldiv(&r, r, 32768, total) && r >= 0 && r <= 32768 &&
- g >= 0 && png_muldiv(&g, g, 32768, total) && g >= 0 && g <= 32768 &&
- b >= 0 && png_muldiv(&b, b, 32768, total) && b >= 0 && b <= 32768 &&
- r+g+b <= 32769)
- {
- /* We allow 0 coefficients here. r+g+b may be 32769 if two or
- * all of the coefficients were rounded up. Handle this by
- * reducing the *largest* coefficient by 1; this matches the
- * approach used for the default coefficients in pngrtran.c
- */
- int add = 0;
-
- if (r+g+b > 32768)
- add = -1;
- else if (r+g+b < 32768)
- add = 1;
-
- if (add != 0)
- {
- if (g >= r && g >= b)
- g += add;
- else if (r >= g && r >= b)
- r += add;
- else
- b += add;
- }
-
- /* Check for an internal error. */
- if (r+g+b != 32768)
- png_error(png_ptr,
- "internal error handling cHRM coefficients");
-
- else
- {
- png_ptr->rgb_to_gray_red_coeff = (png_uint_16)r;
- png_ptr->rgb_to_gray_green_coeff = (png_uint_16)g;
- }
- }
-
- /* This is a png_error at present even though it could be ignored -
- * it should never happen, but it is important that if it does, the
- * bug is fixed.
- */
- else
- png_error(png_ptr, "internal error handling cHRM->XYZ");
- }
-}
-#endif
-
-#endif /* COLORSPACE */
-
-void /* PRIVATE */
-png_check_IHDR(png_const_structrp png_ptr,
- png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_type, int compression_type,
- int filter_type)
-{
- int error = 0;
-
- /* Check for width and height valid values */
- if (width == 0)
- {
- png_warning(png_ptr, "Image width is zero in IHDR");
- error = 1;
- }
-
- if (height == 0)
- {
- png_warning(png_ptr, "Image height is zero in IHDR");
- error = 1;
- }
-
-# ifdef PNG_SET_USER_LIMITS_SUPPORTED
- if (width > png_ptr->user_width_max)
-
-# else
- if (width > PNG_USER_WIDTH_MAX)
-# endif
- {
- png_warning(png_ptr, "Image width exceeds user limit in IHDR");
- error = 1;
- }
-
-# ifdef PNG_SET_USER_LIMITS_SUPPORTED
- if (height > png_ptr->user_height_max)
-# else
- if (height > PNG_USER_HEIGHT_MAX)
-# endif
- {
- png_warning(png_ptr, "Image height exceeds user limit in IHDR");
- error = 1;
- }
-
- if (width > PNG_UINT_31_MAX)
- {
- png_warning(png_ptr, "Invalid image width in IHDR");
- error = 1;
- }
-
- if (height > PNG_UINT_31_MAX)
- {
- png_warning(png_ptr, "Invalid image height in IHDR");
- error = 1;
- }
-
- if (width > (PNG_UINT_32_MAX
- >> 3) /* 8-byte RGBA pixels */
- - 48 /* bigrowbuf hack */
- - 1 /* filter byte */
- - 7*8 /* rounding of width to multiple of 8 pixels */
- - 8) /* extra max_pixel_depth pad */
- png_warning(png_ptr, "Width is too large for libpng to process pixels");
-
- /* Check other values */
- if (bit_depth != 1 && bit_depth != 2 && bit_depth != 4 &&
- bit_depth != 8 && bit_depth != 16)
- {
- png_warning(png_ptr, "Invalid bit depth in IHDR");
- error = 1;
- }
-
- if (color_type < 0 || color_type == 1 ||
- color_type == 5 || color_type > 6)
- {
- png_warning(png_ptr, "Invalid color type in IHDR");
- error = 1;
- }
-
- if (((color_type == PNG_COLOR_TYPE_PALETTE) && bit_depth > 8) ||
- ((color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_GRAY_ALPHA ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA) && bit_depth < 8))
- {
- png_warning(png_ptr, "Invalid color type/bit depth combination in IHDR");
- error = 1;
- }
-
- if (interlace_type >= PNG_INTERLACE_LAST)
- {
- png_warning(png_ptr, "Unknown interlace method in IHDR");
- error = 1;
- }
-
- if (compression_type != PNG_COMPRESSION_TYPE_BASE)
- {
- png_warning(png_ptr, "Unknown compression method in IHDR");
- error = 1;
- }
-
-# ifdef PNG_MNG_FEATURES_SUPPORTED
- /* Accept filter_method 64 (intrapixel differencing) only if
- * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
- * 2. Libpng did not read a PNG signature (this filter_method is only
- * used in PNG datastreams that are embedded in MNG datastreams) and
- * 3. The application called png_permit_mng_features with a mask that
- * included PNG_FLAG_MNG_FILTER_64 and
- * 4. The filter_method is 64 and
- * 5. The color_type is RGB or RGBA
- */
- if ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) &&
- png_ptr->mng_features_permitted)
- png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
-
- if (filter_type != PNG_FILTER_TYPE_BASE)
- {
- if (!((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (filter_type == PNG_INTRAPIXEL_DIFFERENCING) &&
- ((png_ptr->mode & PNG_HAVE_PNG_SIGNATURE) == 0) &&
- (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA)))
- {
- png_warning(png_ptr, "Unknown filter method in IHDR");
- error = 1;
- }
-
- if (png_ptr->mode & PNG_HAVE_PNG_SIGNATURE)
- {
- png_warning(png_ptr, "Invalid filter method in IHDR");
- error = 1;
- }
- }
-
-# else
- if (filter_type != PNG_FILTER_TYPE_BASE)
- {
- png_warning(png_ptr, "Unknown filter method in IHDR");
- error = 1;
- }
-# endif
-
- if (error == 1)
- png_error(png_ptr, "Invalid IHDR data");
-}
-
-#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
-/* ASCII to fp functions */
-/* Check an ASCII formated floating point value, see the more detailed
- * comments in pngpriv.h
- */
-/* The following is used internally to preserve the sticky flags */
-#define png_fp_add(state, flags) ((state) |= (flags))
-#define png_fp_set(state, value) ((state) = (value) | ((state) & PNG_FP_STICKY))
-
-int /* PRIVATE */
-png_check_fp_number(png_const_charp string, png_size_t size, int *statep,
- png_size_tp whereami)
-{
- int state = *statep;
- png_size_t i = *whereami;
-
- while (i < size)
- {
- int type;
- /* First find the type of the next character */
- switch (string[i])
- {
- case 43: type = PNG_FP_SAW_SIGN; break;
- case 45: type = PNG_FP_SAW_SIGN + PNG_FP_NEGATIVE; break;
- case 46: type = PNG_FP_SAW_DOT; break;
- case 48: type = PNG_FP_SAW_DIGIT; break;
- case 49: case 50: case 51: case 52:
- case 53: case 54: case 55: case 56:
- case 57: type = PNG_FP_SAW_DIGIT + PNG_FP_NONZERO; break;
- case 69:
- case 101: type = PNG_FP_SAW_E; break;
- default: goto PNG_FP_End;
- }
-
- /* Now deal with this type according to the current
- * state, the type is arranged to not overlap the
- * bits of the PNG_FP_STATE.
- */
- switch ((state & PNG_FP_STATE) + (type & PNG_FP_SAW_ANY))
- {
- case PNG_FP_INTEGER + PNG_FP_SAW_SIGN:
- if (state & PNG_FP_SAW_ANY)
- goto PNG_FP_End; /* not a part of the number */
-
- png_fp_add(state, type);
- break;
-
- case PNG_FP_INTEGER + PNG_FP_SAW_DOT:
- /* Ok as trailer, ok as lead of fraction. */
- if (state & PNG_FP_SAW_DOT) /* two dots */
- goto PNG_FP_End;
-
- else if (state & PNG_FP_SAW_DIGIT) /* trailing dot? */
- png_fp_add(state, type);
-
- else
- png_fp_set(state, PNG_FP_FRACTION | type);
-
- break;
-
- case PNG_FP_INTEGER + PNG_FP_SAW_DIGIT:
- if (state & PNG_FP_SAW_DOT) /* delayed fraction */
- png_fp_set(state, PNG_FP_FRACTION | PNG_FP_SAW_DOT);
-
- png_fp_add(state, type | PNG_FP_WAS_VALID);
-
- break;
-
- case PNG_FP_INTEGER + PNG_FP_SAW_E:
- if ((state & PNG_FP_SAW_DIGIT) == 0)
- goto PNG_FP_End;
-
- png_fp_set(state, PNG_FP_EXPONENT);
-
- break;
-
- /* case PNG_FP_FRACTION + PNG_FP_SAW_SIGN:
- goto PNG_FP_End; ** no sign in fraction */
-
- /* case PNG_FP_FRACTION + PNG_FP_SAW_DOT:
- goto PNG_FP_End; ** Because SAW_DOT is always set */
-
- case PNG_FP_FRACTION + PNG_FP_SAW_DIGIT:
- png_fp_add(state, type | PNG_FP_WAS_VALID);
- break;
-
- case PNG_FP_FRACTION + PNG_FP_SAW_E:
- /* This is correct because the trailing '.' on an
- * integer is handled above - so we can only get here
- * with the sequence ".E" (with no preceding digits).
- */
- if ((state & PNG_FP_SAW_DIGIT) == 0)
- goto PNG_FP_End;
-
- png_fp_set(state, PNG_FP_EXPONENT);
-
- break;
-
- case PNG_FP_EXPONENT + PNG_FP_SAW_SIGN:
- if (state & PNG_FP_SAW_ANY)
- goto PNG_FP_End; /* not a part of the number */
-
- png_fp_add(state, PNG_FP_SAW_SIGN);
-
- break;
-
- /* case PNG_FP_EXPONENT + PNG_FP_SAW_DOT:
- goto PNG_FP_End; */
-
- case PNG_FP_EXPONENT + PNG_FP_SAW_DIGIT:
- png_fp_add(state, PNG_FP_SAW_DIGIT | PNG_FP_WAS_VALID);
-
- break;
-
- /* case PNG_FP_EXPONEXT + PNG_FP_SAW_E:
- goto PNG_FP_End; */
-
- default: goto PNG_FP_End; /* I.e. break 2 */
- }
-
- /* The character seems ok, continue. */
- ++i;
- }
-
-PNG_FP_End:
- /* Here at the end, update the state and return the correct
- * return code.
- */
- *statep = state;
- *whereami = i;
-
- return (state & PNG_FP_SAW_DIGIT) != 0;
-}
-
-
-/* The same but for a complete string. */
-int
-png_check_fp_string(png_const_charp string, png_size_t size)
-{
- int state=0;
- png_size_t char_index=0;
-
- if (png_check_fp_number(string, size, &state, &char_index) &&
- (char_index == size || string[char_index] == 0))
- return state /* must be non-zero - see above */;
-
- return 0; /* i.e. fail */
-}
-#endif /* pCAL or sCAL */
-
-#ifdef PNG_sCAL_SUPPORTED
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-/* Utility used below - a simple accurate power of ten from an integral
- * exponent.
- */
-static double
-png_pow10(int power)
-{
- int recip = 0;
- double d = 1;
-
- /* Handle negative exponent with a reciprocal at the end because
- * 10 is exact whereas .1 is inexact in base 2
- */
- if (power < 0)
- {
- if (power < DBL_MIN_10_EXP) return 0;
- recip = 1, power = -power;
- }
-
- if (power > 0)
- {
- /* Decompose power bitwise. */
- double mult = 10;
- do
- {
- if (power & 1) d *= mult;
- mult *= mult;
- power >>= 1;
- }
- while (power > 0);
-
- if (recip) d = 1/d;
- }
- /* else power is 0 and d is 1 */
-
- return d;
-}
-
-/* Function to format a floating point value in ASCII with a given
- * precision.
- */
-void /* PRIVATE */
-png_ascii_from_fp(png_const_structrp png_ptr, png_charp ascii, png_size_t size,
- double fp, unsigned int precision)
-{
- /* We use standard functions from math.h, but not printf because
- * that would require stdio. The caller must supply a buffer of
- * sufficient size or we will png_error. The tests on size and
- * the space in ascii[] consumed are indicated below.
- */
- if (precision < 1)
- precision = DBL_DIG;
-
- /* Enforce the limit of the implementation precision too. */
- if (precision > DBL_DIG+1)
- precision = DBL_DIG+1;
-
- /* Basic sanity checks */
- if (size >= precision+5) /* See the requirements below. */
- {
- if (fp < 0)
- {
- fp = -fp;
- *ascii++ = 45; /* '-' PLUS 1 TOTAL 1 */
- --size;
- }
-
- if (fp >= DBL_MIN && fp <= DBL_MAX)
- {
- int exp_b10; /* A base 10 exponent */
- double base; /* 10^exp_b10 */
-
- /* First extract a base 10 exponent of the number,
- * the calculation below rounds down when converting
- * from base 2 to base 10 (multiply by log10(2) -
- * 0.3010, but 77/256 is 0.3008, so exp_b10 needs to
- * be increased. Note that the arithmetic shift
- * performs a floor() unlike C arithmetic - using a
- * C multiply would break the following for negative
- * exponents.
- */
- (void)frexp(fp, &exp_b10); /* exponent to base 2 */
-
- exp_b10 = (exp_b10 * 77) >> 8; /* <= exponent to base 10 */
-
- /* Avoid underflow here. */
- base = png_pow10(exp_b10); /* May underflow */
-
- while (base < DBL_MIN || base < fp)
- {
- /* And this may overflow. */
- double test = png_pow10(exp_b10+1);
-
- if (test <= DBL_MAX)
- ++exp_b10, base = test;
-
- else
- break;
- }
-
- /* Normalize fp and correct exp_b10, after this fp is in the
- * range [.1,1) and exp_b10 is both the exponent and the digit
- * *before* which the decimal point should be inserted
- * (starting with 0 for the first digit). Note that this
- * works even if 10^exp_b10 is out of range because of the
- * test on DBL_MAX above.
- */
- fp /= base;
- while (fp >= 1) fp /= 10, ++exp_b10;
-
- /* Because of the code above fp may, at this point, be
- * less than .1, this is ok because the code below can
- * handle the leading zeros this generates, so no attempt
- * is made to correct that here.
- */
-
- {
- int czero, clead, cdigits;
- char exponent[10];
-
- /* Allow up to two leading zeros - this will not lengthen
- * the number compared to using E-n.
- */
- if (exp_b10 < 0 && exp_b10 > -3) /* PLUS 3 TOTAL 4 */
- {
- czero = -exp_b10; /* PLUS 2 digits: TOTAL 3 */
- exp_b10 = 0; /* Dot added below before first output. */
- }
- else
- czero = 0; /* No zeros to add */
-
- /* Generate the digit list, stripping trailing zeros and
- * inserting a '.' before a digit if the exponent is 0.
- */
- clead = czero; /* Count of leading zeros */
- cdigits = 0; /* Count of digits in list. */
-
- do
- {
- double d;
-
- fp *= 10;
- /* Use modf here, not floor and subtract, so that
- * the separation is done in one step. At the end
- * of the loop don't break the number into parts so
- * that the final digit is rounded.
- */
- if (cdigits+czero-clead+1 < (int)precision)
- fp = modf(fp, &d);
-
- else
- {
- d = floor(fp + .5);
-
- if (d > 9)
- {
- /* Rounding up to 10, handle that here. */
- if (czero > 0)
- {
- --czero, d = 1;
- if (cdigits == 0) --clead;
- }
- else
- {
- while (cdigits > 0 && d > 9)
- {
- int ch = *--ascii;
-
- if (exp_b10 != (-1))
- ++exp_b10;
-
- else if (ch == 46)
- {
- ch = *--ascii, ++size;
- /* Advance exp_b10 to '1', so that the
- * decimal point happens after the
- * previous digit.
- */
- exp_b10 = 1;
- }
-
- --cdigits;
- d = ch - 47; /* I.e. 1+(ch-48) */
- }
-
- /* Did we reach the beginning? If so adjust the
- * exponent but take into account the leading
- * decimal point.
- */
- if (d > 9) /* cdigits == 0 */
- {
- if (exp_b10 == (-1))
- {
- /* Leading decimal point (plus zeros?), if
- * we lose the decimal point here it must
- * be reentered below.
- */
- int ch = *--ascii;
-
- if (ch == 46)
- ++size, exp_b10 = 1;
-
- /* Else lost a leading zero, so 'exp_b10' is
- * still ok at (-1)
- */
- }
- else
- ++exp_b10;
-
- /* In all cases we output a '1' */
- d = 1;
- }
- }
- }
- fp = 0; /* Guarantees termination below. */
- }
-
- if (d == 0)
- {
- ++czero;
- if (cdigits == 0) ++clead;
- }
- else
- {
- /* Included embedded zeros in the digit count. */
- cdigits += czero - clead;
- clead = 0;
-
- while (czero > 0)
- {
- /* exp_b10 == (-1) means we just output the decimal
- * place - after the DP don't adjust 'exp_b10' any
- * more!
- */
- if (exp_b10 != (-1))
- {
- if (exp_b10 == 0) *ascii++ = 46, --size;
- /* PLUS 1: TOTAL 4 */
- --exp_b10;
- }
- *ascii++ = 48, --czero;
- }
-
- if (exp_b10 != (-1))
- {
- if (exp_b10 == 0) *ascii++ = 46, --size; /* counted
- above */
- --exp_b10;
- }
- *ascii++ = (char)(48 + (int)d), ++cdigits;
- }
- }
- while (cdigits+czero-clead < (int)precision && fp > DBL_MIN);
-
- /* The total output count (max) is now 4+precision */
-
- /* Check for an exponent, if we don't need one we are
- * done and just need to terminate the string. At
- * this point exp_b10==(-1) is effectively if flag - it got
- * to '-1' because of the decrement after outputing
- * the decimal point above (the exponent required is
- * *not* -1!)
- */
- if (exp_b10 >= (-1) && exp_b10 <= 2)
- {
- /* The following only happens if we didn't output the
- * leading zeros above for negative exponent, so this
- * doest add to the digit requirement. Note that the
- * two zeros here can only be output if the two leading
- * zeros were *not* output, so this doesn't increase
- * the output count.
- */
- while (--exp_b10 >= 0) *ascii++ = 48;
-
- *ascii = 0;
-
- /* Total buffer requirement (including the '\0') is
- * 5+precision - see check at the start.
- */
- return;
- }
-
- /* Here if an exponent is required, adjust size for
- * the digits we output but did not count. The total
- * digit output here so far is at most 1+precision - no
- * decimal point and no leading or trailing zeros have
- * been output.
- */
- size -= cdigits;
-
- *ascii++ = 69, --size; /* 'E': PLUS 1 TOTAL 2+precision */
-
- /* The following use of an unsigned temporary avoids ambiguities in
- * the signed arithmetic on exp_b10 and permits GCC at least to do
- * better optimization.
- */
- {
- unsigned int uexp_b10;
-
- if (exp_b10 < 0)
- {
- *ascii++ = 45, --size; /* '-': PLUS 1 TOTAL 3+precision */
- uexp_b10 = -exp_b10;
- }
-
- else
- uexp_b10 = exp_b10;
-
- cdigits = 0;
-
- while (uexp_b10 > 0)
- {
- exponent[cdigits++] = (char)(48 + uexp_b10 % 10);
- uexp_b10 /= 10;
- }
- }
-
- /* Need another size check here for the exponent digits, so
- * this need not be considered above.
- */
- if ((int)size > cdigits)
- {
- while (cdigits > 0) *ascii++ = exponent[--cdigits];
-
- *ascii = 0;
-
- return;
- }
- }
- }
- else if (!(fp >= DBL_MIN))
- {
- *ascii++ = 48; /* '0' */
- *ascii = 0;
- return;
- }
- else
- {
- *ascii++ = 105; /* 'i' */
- *ascii++ = 110; /* 'n' */
- *ascii++ = 102; /* 'f' */
- *ascii = 0;
- return;
- }
- }
-
- /* Here on buffer too small. */
- png_error(png_ptr, "ASCII conversion buffer too small");
-}
-
-# endif /* FLOATING_POINT */
-
-# ifdef PNG_FIXED_POINT_SUPPORTED
-/* Function to format a fixed point value in ASCII.
- */
-void /* PRIVATE */
-png_ascii_from_fixed(png_const_structrp png_ptr, png_charp ascii,
- png_size_t size, png_fixed_point fp)
-{
- /* Require space for 10 decimal digits, a decimal point, a minus sign and a
- * trailing \0, 13 characters:
- */
- if (size > 12)
- {
- png_uint_32 num;
-
- /* Avoid overflow here on the minimum integer. */
- if (fp < 0)
- *ascii++ = 45, --size, num = -fp;
- else
- num = fp;
-
- if (num <= 0x80000000) /* else overflowed */
- {
- unsigned int ndigits = 0, first = 16 /* flag value */;
- char digits[10];
-
- while (num)
- {
- /* Split the low digit off num: */
- unsigned int tmp = num/10;
- num -= tmp*10;
- digits[ndigits++] = (char)(48 + num);
- /* Record the first non-zero digit, note that this is a number
- * starting at 1, it's not actually the array index.
- */
- if (first == 16 && num > 0)
- first = ndigits;
- num = tmp;
- }
-
- if (ndigits > 0)
- {
- while (ndigits > 5) *ascii++ = digits[--ndigits];
- /* The remaining digits are fractional digits, ndigits is '5' or
- * smaller at this point. It is certainly not zero. Check for a
- * non-zero fractional digit:
- */
- if (first <= 5)
- {
- unsigned int i;
- *ascii++ = 46; /* decimal point */
- /* ndigits may be <5 for small numbers, output leading zeros
- * then ndigits digits to first:
- */
- i = 5;
- while (ndigits < i) *ascii++ = 48, --i;
- while (ndigits >= first) *ascii++ = digits[--ndigits];
- /* Don't output the trailing zeros! */
- }
- }
- else
- *ascii++ = 48;
-
- /* And null terminate the string: */
- *ascii = 0;
- return;
- }
- }
-
- /* Here on buffer too small. */
- png_error(png_ptr, "ASCII conversion buffer too small");
-}
-# endif /* FIXED_POINT */
-#endif /* READ_SCAL */
-
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
- !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \
- (defined(PNG_gAMA_SUPPORTED) || defined(PNG_cHRM_SUPPORTED) || \
- defined(PNG_sCAL_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \
- (defined(PNG_sCAL_SUPPORTED) && \
- defined(PNG_FLOATING_ARITHMETIC_SUPPORTED))
-png_fixed_point
-png_fixed(png_const_structrp png_ptr, double fp, png_const_charp text)
-{
- double r = floor(100000 * fp + .5);
-
- if (r > 2147483647. || r < -2147483648.)
- png_fixed_error(png_ptr, text);
-
- return (png_fixed_point)r;
-}
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || \
- defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
-/* muldiv functions */
-/* This API takes signed arguments and rounds the result to the nearest
- * integer (or, for a fixed point number - the standard argument - to
- * the nearest .00001). Overflow and divide by zero are signalled in
- * the result, a boolean - true on success, false on overflow.
- */
-int
-png_muldiv(png_fixed_point_p res, png_fixed_point a, png_int_32 times,
- png_int_32 divisor)
-{
- /* Return a * times / divisor, rounded. */
- if (divisor != 0)
- {
- if (a == 0 || times == 0)
- {
- *res = 0;
- return 1;
- }
- else
- {
-#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- double r = a;
- r *= times;
- r /= divisor;
- r = floor(r+.5);
-
- /* A png_fixed_point is a 32-bit integer. */
- if (r <= 2147483647. && r >= -2147483648.)
- {
- *res = (png_fixed_point)r;
- return 1;
- }
-#else
- int negative = 0;
- png_uint_32 A, T, D;
- png_uint_32 s16, s32, s00;
-
- if (a < 0)
- negative = 1, A = -a;
- else
- A = a;
-
- if (times < 0)
- negative = !negative, T = -times;
- else
- T = times;
-
- if (divisor < 0)
- negative = !negative, D = -divisor;
- else
- D = divisor;
-
- /* Following can't overflow because the arguments only
- * have 31 bits each, however the result may be 32 bits.
- */
- s16 = (A >> 16) * (T & 0xffff) +
- (A & 0xffff) * (T >> 16);
- /* Can't overflow because the a*times bit is only 30
- * bits at most.
- */
- s32 = (A >> 16) * (T >> 16) + (s16 >> 16);
- s00 = (A & 0xffff) * (T & 0xffff);
-
- s16 = (s16 & 0xffff) << 16;
- s00 += s16;
-
- if (s00 < s16)
- ++s32; /* carry */
-
- if (s32 < D) /* else overflow */
- {
- /* s32.s00 is now the 64-bit product, do a standard
- * division, we know that s32 < D, so the maximum
- * required shift is 31.
- */
- int bitshift = 32;
- png_fixed_point result = 0; /* NOTE: signed */
-
- while (--bitshift >= 0)
- {
- png_uint_32 d32, d00;
-
- if (bitshift > 0)
- d32 = D >> (32-bitshift), d00 = D << bitshift;
-
- else
- d32 = 0, d00 = D;
-
- if (s32 > d32)
- {
- if (s00 < d00) --s32; /* carry */
- s32 -= d32, s00 -= d00, result += 1<<bitshift;
- }
-
- else
- if (s32 == d32 && s00 >= d00)
- s32 = 0, s00 -= d00, result += 1<<bitshift;
- }
-
- /* Handle the rounding. */
- if (s00 >= (D >> 1))
- ++result;
-
- if (negative)
- result = -result;
-
- /* Check for overflow. */
- if ((negative && result <= 0) || (!negative && result >= 0))
- {
- *res = result;
- return 1;
- }
- }
-#endif
- }
- }
-
- return 0;
-}
-#endif /* READ_GAMMA || INCH_CONVERSIONS */
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
-/* The following is for when the caller doesn't much care about the
- * result.
- */
-png_fixed_point
-png_muldiv_warn(png_const_structrp png_ptr, png_fixed_point a, png_int_32 times,
- png_int_32 divisor)
-{
- png_fixed_point result;
-
- if (png_muldiv(&result, a, times, divisor))
- return result;
-
- png_warning(png_ptr, "fixed point overflow ignored");
- return 0;
-}
-#endif
-
-#ifdef PNG_GAMMA_SUPPORTED /* more fixed point functions for gamma */
-/* Calculate a reciprocal, return 0 on div-by-zero or overflow. */
-png_fixed_point
-png_reciprocal(png_fixed_point a)
-{
-#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- double r = floor(1E10/a+.5);
-
- if (r <= 2147483647. && r >= -2147483648.)
- return (png_fixed_point)r;
-#else
- png_fixed_point res;
-
- if (png_muldiv(&res, 100000, 100000, a))
- return res;
-#endif
-
- return 0; /* error/overflow */
-}
-
-/* This is the shared test on whether a gamma value is 'significant' - whether
- * it is worth doing gamma correction.
- */
-int /* PRIVATE */
-png_gamma_significant(png_fixed_point gamma_val)
-{
- return gamma_val < PNG_FP_1 - PNG_GAMMA_THRESHOLD_FIXED ||
- gamma_val > PNG_FP_1 + PNG_GAMMA_THRESHOLD_FIXED;
-}
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-/* A local convenience routine. */
-static png_fixed_point
-png_product2(png_fixed_point a, png_fixed_point b)
-{
- /* The required result is 1/a * 1/b; the following preserves accuracy. */
-#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- double r = a * 1E-5;
- r *= b;
- r = floor(r+.5);
-
- if (r <= 2147483647. && r >= -2147483648.)
- return (png_fixed_point)r;
-#else
- png_fixed_point res;
-
- if (png_muldiv(&res, a, b, 100000))
- return res;
-#endif
-
- return 0; /* overflow */
-}
-
-/* The inverse of the above. */
-png_fixed_point
-png_reciprocal2(png_fixed_point a, png_fixed_point b)
-{
- /* The required result is 1/a * 1/b; the following preserves accuracy. */
-#ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- double r = 1E15/a;
- r /= b;
- r = floor(r+.5);
-
- if (r <= 2147483647. && r >= -2147483648.)
- return (png_fixed_point)r;
-#else
- /* This may overflow because the range of png_fixed_point isn't symmetric,
- * but this API is only used for the product of file and screen gamma so it
- * doesn't matter that the smallest number it can produce is 1/21474, not
- * 1/100000
- */
- png_fixed_point res = png_product2(a, b);
-
- if (res != 0)
- return png_reciprocal(res);
-#endif
-
- return 0; /* overflow */
-}
-#endif /* READ_GAMMA */
-
-#ifdef PNG_READ_GAMMA_SUPPORTED /* gamma table code */
-#ifndef PNG_FLOATING_ARITHMETIC_SUPPORTED
-/* Fixed point gamma.
- *
- * The code to calculate the tables used below can be found in the shell script
- * contrib/tools/intgamma.sh
- *
- * To calculate gamma this code implements fast log() and exp() calls using only
- * fixed point arithmetic. This code has sufficient precision for either 8-bit
- * or 16-bit sample values.
- *
- * The tables used here were calculated using simple 'bc' programs, but C double
- * precision floating point arithmetic would work fine.
- *
- * 8-bit log table
- * This is a table of -log(value/255)/log(2) for 'value' in the range 128 to
- * 255, so it's the base 2 logarithm of a normalized 8-bit floating point
- * mantissa. The numbers are 32-bit fractions.
- */
-static const png_uint_32
-png_8bit_l2[128] =
-{
- 4270715492U, 4222494797U, 4174646467U, 4127164793U, 4080044201U, 4033279239U,
- 3986864580U, 3940795015U, 3895065449U, 3849670902U, 3804606499U, 3759867474U,
- 3715449162U, 3671346997U, 3627556511U, 3584073329U, 3540893168U, 3498011834U,
- 3455425220U, 3413129301U, 3371120137U, 3329393864U, 3287946700U, 3246774933U,
- 3205874930U, 3165243125U, 3124876025U, 3084770202U, 3044922296U, 3005329011U,
- 2965987113U, 2926893432U, 2888044853U, 2849438323U, 2811070844U, 2772939474U,
- 2735041326U, 2697373562U, 2659933400U, 2622718104U, 2585724991U, 2548951424U,
- 2512394810U, 2476052606U, 2439922311U, 2404001468U, 2368287663U, 2332778523U,
- 2297471715U, 2262364947U, 2227455964U, 2192742551U, 2158222529U, 2123893754U,
- 2089754119U, 2055801552U, 2022034013U, 1988449497U, 1955046031U, 1921821672U,
- 1888774511U, 1855902668U, 1823204291U, 1790677560U, 1758320682U, 1726131893U,
- 1694109454U, 1662251657U, 1630556815U, 1599023271U, 1567649391U, 1536433567U,
- 1505374214U, 1474469770U, 1443718700U, 1413119487U, 1382670639U, 1352370686U,
- 1322218179U, 1292211689U, 1262349810U, 1232631153U, 1203054352U, 1173618059U,
- 1144320946U, 1115161701U, 1086139034U, 1057251672U, 1028498358U, 999877854U,
- 971388940U, 943030410U, 914801076U, 886699767U, 858725327U, 830876614U,
- 803152505U, 775551890U, 748073672U, 720716771U, 693480120U, 666362667U,
- 639363374U, 612481215U, 585715177U, 559064263U, 532527486U, 506103872U,
- 479792461U, 453592303U, 427502463U, 401522014U, 375650043U, 349885648U,
- 324227938U, 298676034U, 273229066U, 247886176U, 222646516U, 197509248U,
- 172473545U, 147538590U, 122703574U, 97967701U, 73330182U, 48790236U,
- 24347096U, 0U
-
-#if 0
- /* The following are the values for 16-bit tables - these work fine for the
- * 8-bit conversions but produce very slightly larger errors in the 16-bit
- * log (about 1.2 as opposed to 0.7 absolute error in the final value). To
- * use these all the shifts below must be adjusted appropriately.
- */
- 65166, 64430, 63700, 62976, 62257, 61543, 60835, 60132, 59434, 58741, 58054,
- 57371, 56693, 56020, 55352, 54689, 54030, 53375, 52726, 52080, 51439, 50803,
- 50170, 49542, 48918, 48298, 47682, 47070, 46462, 45858, 45257, 44661, 44068,
- 43479, 42894, 42312, 41733, 41159, 40587, 40020, 39455, 38894, 38336, 37782,
- 37230, 36682, 36137, 35595, 35057, 34521, 33988, 33459, 32932, 32408, 31887,
- 31369, 30854, 30341, 29832, 29325, 28820, 28319, 27820, 27324, 26830, 26339,
- 25850, 25364, 24880, 24399, 23920, 23444, 22970, 22499, 22029, 21562, 21098,
- 20636, 20175, 19718, 19262, 18808, 18357, 17908, 17461, 17016, 16573, 16132,
- 15694, 15257, 14822, 14390, 13959, 13530, 13103, 12678, 12255, 11834, 11415,
- 10997, 10582, 10168, 9756, 9346, 8937, 8531, 8126, 7723, 7321, 6921, 6523,
- 6127, 5732, 5339, 4947, 4557, 4169, 3782, 3397, 3014, 2632, 2251, 1872, 1495,
- 1119, 744, 372
-#endif
-};
-
-static png_int_32
-png_log8bit(unsigned int x)
-{
- unsigned int lg2 = 0;
- /* Each time 'x' is multiplied by 2, 1 must be subtracted off the final log,
- * because the log is actually negate that means adding 1. The final
- * returned value thus has the range 0 (for 255 input) to 7.994 (for 1
- * input), return -1 for the overflow (log 0) case, - so the result is
- * always at most 19 bits.
- */
- if ((x &= 0xff) == 0)
- return -1;
-
- if ((x & 0xf0) == 0)
- lg2 = 4, x <<= 4;
-
- if ((x & 0xc0) == 0)
- lg2 += 2, x <<= 2;
-
- if ((x & 0x80) == 0)
- lg2 += 1, x <<= 1;
-
- /* result is at most 19 bits, so this cast is safe: */
- return (png_int_32)((lg2 << 16) + ((png_8bit_l2[x-128]+32768)>>16));
-}
-
-/* The above gives exact (to 16 binary places) log2 values for 8-bit images,
- * for 16-bit images we use the most significant 8 bits of the 16-bit value to
- * get an approximation then multiply the approximation by a correction factor
- * determined by the remaining up to 8 bits. This requires an additional step
- * in the 16-bit case.
- *
- * We want log2(value/65535), we have log2(v'/255), where:
- *
- * value = v' * 256 + v''
- * = v' * f
- *
- * So f is value/v', which is equal to (256+v''/v') since v' is in the range 128
- * to 255 and v'' is in the range 0 to 255 f will be in the range 256 to less
- * than 258. The final factor also needs to correct for the fact that our 8-bit
- * value is scaled by 255, whereas the 16-bit values must be scaled by 65535.
- *
- * This gives a final formula using a calculated value 'x' which is value/v' and
- * scaling by 65536 to match the above table:
- *
- * log2(x/257) * 65536
- *
- * Since these numbers are so close to '1' we can use simple linear
- * interpolation between the two end values 256/257 (result -368.61) and 258/257
- * (result 367.179). The values used below are scaled by a further 64 to give
- * 16-bit precision in the interpolation:
- *
- * Start (256): -23591
- * Zero (257): 0
- * End (258): 23499
- */
-static png_int_32
-png_log16bit(png_uint_32 x)
-{
- unsigned int lg2 = 0;
-
- /* As above, but now the input has 16 bits. */
- if ((x &= 0xffff) == 0)
- return -1;
-
- if ((x & 0xff00) == 0)
- lg2 = 8, x <<= 8;
-
- if ((x & 0xf000) == 0)
- lg2 += 4, x <<= 4;
-
- if ((x & 0xc000) == 0)
- lg2 += 2, x <<= 2;
-
- if ((x & 0x8000) == 0)
- lg2 += 1, x <<= 1;
-
- /* Calculate the base logarithm from the top 8 bits as a 28-bit fractional
- * value.
- */
- lg2 <<= 28;
- lg2 += (png_8bit_l2[(x>>8)-128]+8) >> 4;
-
- /* Now we need to interpolate the factor, this requires a division by the top
- * 8 bits. Do this with maximum precision.
- */
- x = ((x << 16) + (x >> 9)) / (x >> 8);
-
- /* Since we divided by the top 8 bits of 'x' there will be a '1' at 1<<24,
- * the value at 1<<16 (ignoring this) will be 0 or 1; this gives us exactly
- * 16 bits to interpolate to get the low bits of the result. Round the
- * answer. Note that the end point values are scaled by 64 to retain overall
- * precision and that 'lg2' is current scaled by an extra 12 bits, so adjust
- * the overall scaling by 6-12. Round at every step.
- */
- x -= 1U << 24;
-
- if (x <= 65536U) /* <= '257' */
- lg2 += ((23591U * (65536U-x)) + (1U << (16+6-12-1))) >> (16+6-12);
-
- else
- lg2 -= ((23499U * (x-65536U)) + (1U << (16+6-12-1))) >> (16+6-12);
-
- /* Safe, because the result can't have more than 20 bits: */
- return (png_int_32)((lg2 + 2048) >> 12);
-}
-
-/* The 'exp()' case must invert the above, taking a 20-bit fixed point
- * logarithmic value and returning a 16 or 8-bit number as appropriate. In
- * each case only the low 16 bits are relevant - the fraction - since the
- * integer bits (the top 4) simply determine a shift.
- *
- * The worst case is the 16-bit distinction between 65535 and 65534, this
- * requires perhaps spurious accuracty in the decoding of the logarithm to
- * distinguish log2(65535/65534.5) - 10^-5 or 17 bits. There is little chance
- * of getting this accuracy in practice.
- *
- * To deal with this the following exp() function works out the exponent of the
- * frational part of the logarithm by using an accurate 32-bit value from the
- * top four fractional bits then multiplying in the remaining bits.
- */
-static const png_uint_32
-png_32bit_exp[16] =
-{
- /* NOTE: the first entry is deliberately set to the maximum 32-bit value. */
- 4294967295U, 4112874773U, 3938502376U, 3771522796U, 3611622603U, 3458501653U,
- 3311872529U, 3171459999U, 3037000500U, 2908241642U, 2784941738U, 2666869345U,
- 2553802834U, 2445529972U, 2341847524U, 2242560872U
-};
-
-/* Adjustment table; provided to explain the numbers in the code below. */
-#if 0
-for (i=11;i>=0;--i){ print i, " ", (1 - e(-(2^i)/65536*l(2))) * 2^(32-i), "\n"}
- 11 44937.64284865548751208448
- 10 45180.98734845585101160448
- 9 45303.31936980687359311872
- 8 45364.65110595323018870784
- 7 45395.35850361789624614912
- 6 45410.72259715102037508096
- 5 45418.40724413220722311168
- 4 45422.25021786898173001728
- 3 45424.17186732298419044352
- 2 45425.13273269940811464704
- 1 45425.61317555035558641664
- 0 45425.85339951654943850496
-#endif
-
-static png_uint_32
-png_exp(png_fixed_point x)
-{
- if (x > 0 && x <= 0xfffff) /* Else overflow or zero (underflow) */
- {
- /* Obtain a 4-bit approximation */
- png_uint_32 e = png_32bit_exp[(x >> 12) & 0xf];
-
- /* Incorporate the low 12 bits - these decrease the returned value by
- * multiplying by a number less than 1 if the bit is set. The multiplier
- * is determined by the above table and the shift. Notice that the values
- * converge on 45426 and this is used to allow linear interpolation of the
- * low bits.
- */
- if (x & 0x800)
- e -= (((e >> 16) * 44938U) + 16U) >> 5;
-
- if (x & 0x400)
- e -= (((e >> 16) * 45181U) + 32U) >> 6;
-
- if (x & 0x200)
- e -= (((e >> 16) * 45303U) + 64U) >> 7;
-
- if (x & 0x100)
- e -= (((e >> 16) * 45365U) + 128U) >> 8;
-
- if (x & 0x080)
- e -= (((e >> 16) * 45395U) + 256U) >> 9;
-
- if (x & 0x040)
- e -= (((e >> 16) * 45410U) + 512U) >> 10;
-
- /* And handle the low 6 bits in a single block. */
- e -= (((e >> 16) * 355U * (x & 0x3fU)) + 256U) >> 9;
-
- /* Handle the upper bits of x. */
- e >>= x >> 16;
- return e;
- }
-
- /* Check for overflow */
- if (x <= 0)
- return png_32bit_exp[0];
-
- /* Else underflow */
- return 0;
-}
-
-static png_byte
-png_exp8bit(png_fixed_point lg2)
-{
- /* Get a 32-bit value: */
- png_uint_32 x = png_exp(lg2);
-
- /* Convert the 32-bit value to 0..255 by multiplying by 256-1, note that the
- * second, rounding, step can't overflow because of the first, subtraction,
- * step.
- */
- x -= x >> 8;
- return (png_byte)((x + 0x7fffffU) >> 24);
-}
-
-static png_uint_16
-png_exp16bit(png_fixed_point lg2)
-{
- /* Get a 32-bit value: */
- png_uint_32 x = png_exp(lg2);
-
- /* Convert the 32-bit value to 0..65535 by multiplying by 65536-1: */
- x -= x >> 16;
- return (png_uint_16)((x + 32767U) >> 16);
-}
-#endif /* FLOATING_ARITHMETIC */
-
-png_byte
-png_gamma_8bit_correct(unsigned int value, png_fixed_point gamma_val)
-{
- if (value > 0 && value < 255)
- {
-# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- double r = floor(255*pow(value/255.,gamma_val*.00001)+.5);
- return (png_byte)r;
-# else
- png_int_32 lg2 = png_log8bit(value);
- png_fixed_point res;
-
- if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
- return png_exp8bit(res);
-
- /* Overflow. */
- value = 0;
-# endif
- }
-
- return (png_byte)value;
-}
-
-png_uint_16
-png_gamma_16bit_correct(unsigned int value, png_fixed_point gamma_val)
-{
- if (value > 0 && value < 65535)
- {
-# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- double r = floor(65535*pow(value/65535.,gamma_val*.00001)+.5);
- return (png_uint_16)r;
-# else
- png_int_32 lg2 = png_log16bit(value);
- png_fixed_point res;
-
- if (png_muldiv(&res, gamma_val, lg2, PNG_FP_1))
- return png_exp16bit(res);
-
- /* Overflow. */
- value = 0;
-# endif
- }
-
- return (png_uint_16)value;
-}
-
-/* This does the right thing based on the bit_depth field of the
- * png_struct, interpreting values as 8-bit or 16-bit. While the result
- * is nominally a 16-bit value if bit depth is 8 then the result is
- * 8-bit (as are the arguments.)
- */
-png_uint_16 /* PRIVATE */
-png_gamma_correct(png_structrp png_ptr, unsigned int value,
- png_fixed_point gamma_val)
-{
- if (png_ptr->bit_depth == 8)
- return png_gamma_8bit_correct(value, gamma_val);
-
- else
- return png_gamma_16bit_correct(value, gamma_val);
-}
-
-/* Internal function to build a single 16-bit table - the table consists of
- * 'num' 256 entry subtables, where 'num' is determined by 'shift' - the amount
- * to shift the input values right (or 16-number_of_signifiant_bits).
- *
- * The caller is responsible for ensuring that the table gets cleaned up on
- * png_error (i.e. if one of the mallocs below fails) - i.e. the *table argument
- * should be somewhere that will be cleaned.
- */
-static void
-png_build_16bit_table(png_structrp png_ptr, png_uint_16pp *ptable,
- PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
-{
- /* Various values derived from 'shift': */
- PNG_CONST unsigned int num = 1U << (8U - shift);
- PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
- PNG_CONST unsigned int max_by_2 = 1U << (15U-shift);
- unsigned int i;
-
- png_uint_16pp table = *ptable =
- (png_uint_16pp)png_calloc(png_ptr, num * (sizeof (png_uint_16p)));
-
- for (i = 0; i < num; i++)
- {
- png_uint_16p sub_table = table[i] =
- (png_uint_16p)png_malloc(png_ptr, 256 * (sizeof (png_uint_16)));
-
- /* The 'threshold' test is repeated here because it can arise for one of
- * the 16-bit tables even if the others don't hit it.
- */
- if (png_gamma_significant(gamma_val))
- {
- /* The old code would overflow at the end and this would cause the
- * 'pow' function to return a result >1, resulting in an
- * arithmetic error. This code follows the spec exactly; ig is
- * the recovered input sample, it always has 8-16 bits.
- *
- * We want input * 65535/max, rounded, the arithmetic fits in 32
- * bits (unsigned) so long as max <= 32767.
- */
- unsigned int j;
- for (j = 0; j < 256; j++)
- {
- png_uint_32 ig = (j << (8-shift)) + i;
-# ifdef PNG_FLOATING_ARITHMETIC_SUPPORTED
- /* Inline the 'max' scaling operation: */
- double d = floor(65535*pow(ig/(double)max, gamma_val*.00001)+.5);
- sub_table[j] = (png_uint_16)d;
-# else
- if (shift)
- ig = (ig * 65535U + max_by_2)/max;
-
- sub_table[j] = png_gamma_16bit_correct(ig, gamma_val);
-# endif
- }
- }
- else
- {
- /* We must still build a table, but do it the fast way. */
- unsigned int j;
-
- for (j = 0; j < 256; j++)
- {
- png_uint_32 ig = (j << (8-shift)) + i;
-
- if (shift)
- ig = (ig * 65535U + max_by_2)/max;
-
- sub_table[j] = (png_uint_16)ig;
- }
- }
- }
-}
-
-/* NOTE: this function expects the *inverse* of the overall gamma transformation
- * required.
- */
-static void
-png_build_16to8_table(png_structrp png_ptr, png_uint_16pp *ptable,
- PNG_CONST unsigned int shift, PNG_CONST png_fixed_point gamma_val)
-{
- PNG_CONST unsigned int num = 1U << (8U - shift);
- PNG_CONST unsigned int max = (1U << (16U - shift))-1U;
- unsigned int i;
- png_uint_32 last;
-
- png_uint_16pp table = *ptable =
- (png_uint_16pp)png_calloc(png_ptr, num * (sizeof (png_uint_16p)));
-
- /* 'num' is the number of tables and also the number of low bits of low
- * bits of the input 16-bit value used to select a table. Each table is
- * itself index by the high 8 bits of the value.
- */
- for (i = 0; i < num; i++)
- table[i] = (png_uint_16p)png_malloc(png_ptr,
- 256 * (sizeof (png_uint_16)));
-
- /* 'gamma_val' is set to the reciprocal of the value calculated above, so
- * pow(out,g) is an *input* value. 'last' is the last input value set.
- *
- * In the loop 'i' is used to find output values. Since the output is
- * 8-bit there are only 256 possible values. The tables are set up to
- * select the closest possible output value for each input by finding
- * the input value at the boundary between each pair of output values
- * and filling the table up to that boundary with the lower output
- * value.
- *
- * The boundary values are 0.5,1.5..253.5,254.5. Since these are 9-bit
- * values the code below uses a 16-bit value in i; the values start at
- * 128.5 (for 0.5) and step by 257, for a total of 254 values (the last
- * entries are filled with 255). Start i at 128 and fill all 'last'
- * table entries <= 'max'
- */
- last = 0;
- for (i = 0; i < 255; ++i) /* 8-bit output value */
- {
- /* Find the corresponding maximum input value */
- png_uint_16 out = (png_uint_16)(i * 257U); /* 16-bit output value */
-
- /* Find the boundary value in 16 bits: */
- png_uint_32 bound = png_gamma_16bit_correct(out+128U, gamma_val);
-
- /* Adjust (round) to (16-shift) bits: */
- bound = (bound * max + 32768U)/65535U + 1U;
-
- while (last < bound)
- {
- table[last & (0xffU >> shift)][last >> (8U - shift)] = out;
- last++;
- }
- }
-
- /* And fill in the final entries. */
- while (last < (num << 8))
- {
- table[last & (0xff >> shift)][last >> (8U - shift)] = 65535U;
- last++;
- }
-}
-
-/* Build a single 8-bit table: same as the 16-bit case but much simpler (and
- * typically much faster). Note that libpng currently does no sBIT processing
- * (apparently contrary to the spec) so a 256 entry table is always generated.
- */
-static void
-png_build_8bit_table(png_structrp png_ptr, png_bytepp ptable,
- PNG_CONST png_fixed_point gamma_val)
-{
- unsigned int i;
- png_bytep table = *ptable = (png_bytep)png_malloc(png_ptr, 256);
-
- if (png_gamma_significant(gamma_val)) for (i=0; i<256; i++)
- table[i] = png_gamma_8bit_correct(i, gamma_val);
-
- else for (i=0; i<256; ++i)
- table[i] = (png_byte)i;
-}
-
-/* Used from png_read_destroy and below to release the memory used by the gamma
- * tables.
- */
-void /* PRIVATE */
-png_destroy_gamma_table(png_structrp png_ptr)
-{
- png_free(png_ptr, png_ptr->gamma_table);
- png_ptr->gamma_table = NULL;
-
- if (png_ptr->gamma_16_table != NULL)
- {
- int i;
- int istop = (1 << (8 - png_ptr->gamma_shift));
- for (i = 0; i < istop; i++)
- {
- png_free(png_ptr, png_ptr->gamma_16_table[i]);
- }
- png_free(png_ptr, png_ptr->gamma_16_table);
- png_ptr->gamma_16_table = NULL;
- }
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- png_free(png_ptr, png_ptr->gamma_from_1);
- png_ptr->gamma_from_1 = NULL;
- png_free(png_ptr, png_ptr->gamma_to_1);
- png_ptr->gamma_to_1 = NULL;
-
- if (png_ptr->gamma_16_from_1 != NULL)
- {
- int i;
- int istop = (1 << (8 - png_ptr->gamma_shift));
- for (i = 0; i < istop; i++)
- {
- png_free(png_ptr, png_ptr->gamma_16_from_1[i]);
- }
- png_free(png_ptr, png_ptr->gamma_16_from_1);
- png_ptr->gamma_16_from_1 = NULL;
- }
- if (png_ptr->gamma_16_to_1 != NULL)
- {
- int i;
- int istop = (1 << (8 - png_ptr->gamma_shift));
- for (i = 0; i < istop; i++)
- {
- png_free(png_ptr, png_ptr->gamma_16_to_1[i]);
- }
- png_free(png_ptr, png_ptr->gamma_16_to_1);
- png_ptr->gamma_16_to_1 = NULL;
- }
-#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
-}
-
-/* We build the 8- or 16-bit gamma tables here. Note that for 16-bit
- * tables, we don't make a full table if we are reducing to 8-bit in
- * the future. Note also how the gamma_16 tables are segmented so that
- * we don't need to allocate > 64K chunks for a full 16-bit table.
- */
-void /* PRIVATE */
-png_build_gamma_table(png_structrp png_ptr, int bit_depth)
-{
- png_debug(1, "in png_build_gamma_table");
-
- /* Remove any existing table; this copes with multiple calls to
- * png_read_update_info. The warning is because building the gamma tables
- * multiple times is a performance hit - it's harmless but the ability to call
- * png_read_update_info() multiple times is new in 1.5.6 so it seems sensible
- * to warn if the app introduces such a hit.
- */
- if (png_ptr->gamma_table != NULL || png_ptr->gamma_16_table != NULL)
- {
- png_warning(png_ptr, "gamma table being rebuilt");
- png_destroy_gamma_table(png_ptr);
- }
-
- if (bit_depth <= 8)
- {
- png_build_8bit_table(png_ptr, &png_ptr->gamma_table,
- png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
- png_ptr->screen_gamma) : PNG_FP_1);
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- if (png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY))
- {
- png_build_8bit_table(png_ptr, &png_ptr->gamma_to_1,
- png_reciprocal(png_ptr->colorspace.gamma));
-
- png_build_8bit_table(png_ptr, &png_ptr->gamma_from_1,
- png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
- png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
- }
-#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
- }
- else
- {
- png_byte shift, sig_bit;
-
- if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
- {
- sig_bit = png_ptr->sig_bit.red;
-
- if (png_ptr->sig_bit.green > sig_bit)
- sig_bit = png_ptr->sig_bit.green;
-
- if (png_ptr->sig_bit.blue > sig_bit)
- sig_bit = png_ptr->sig_bit.blue;
- }
- else
- sig_bit = png_ptr->sig_bit.gray;
-
- /* 16-bit gamma code uses this equation:
- *
- * ov = table[(iv & 0xff) >> gamma_shift][iv >> 8]
- *
- * Where 'iv' is the input color value and 'ov' is the output value -
- * pow(iv, gamma).
- *
- * Thus the gamma table consists of up to 256 256 entry tables. The table
- * is selected by the (8-gamma_shift) most significant of the low 8 bits of
- * the color value then indexed by the upper 8 bits:
- *
- * table[low bits][high 8 bits]
- *
- * So the table 'n' corresponds to all those 'iv' of:
- *
- * <all high 8-bit values><n << gamma_shift>..<(n+1 << gamma_shift)-1>
- *
- */
- if (sig_bit > 0 && sig_bit < 16U)
- shift = (png_byte)(16U - sig_bit); /* shift == insignificant bits */
-
- else
- shift = 0; /* keep all 16 bits */
-
- if (png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8))
- {
- /* PNG_MAX_GAMMA_8 is the number of bits to keep - effectively
- * the significant bits in the *input* when the output will
- * eventually be 8 bits. By default it is 11.
- */
- if (shift < (16U - PNG_MAX_GAMMA_8))
- shift = (16U - PNG_MAX_GAMMA_8);
- }
-
- if (shift > 8U)
- shift = 8U; /* Guarantees at least one table! */
-
- png_ptr->gamma_shift = shift;
-
-#ifdef PNG_16BIT_SUPPORTED
- /* NOTE: prior to 1.5.4 this test used to include PNG_BACKGROUND (now
- * PNG_COMPOSE). This effectively smashed the background calculation for
- * 16-bit output because the 8-bit table assumes the result will be reduced
- * to 8 bits.
- */
- if (png_ptr->transformations & (PNG_16_TO_8 | PNG_SCALE_16_TO_8))
-#endif
- png_build_16to8_table(png_ptr, &png_ptr->gamma_16_table, shift,
- png_ptr->screen_gamma > 0 ? png_product2(png_ptr->colorspace.gamma,
- png_ptr->screen_gamma) : PNG_FP_1);
-
-#ifdef PNG_16BIT_SUPPORTED
- else
- png_build_16bit_table(png_ptr, &png_ptr->gamma_16_table, shift,
- png_ptr->screen_gamma > 0 ? png_reciprocal2(png_ptr->colorspace.gamma,
- png_ptr->screen_gamma) : PNG_FP_1);
-#endif
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- if (png_ptr->transformations & (PNG_COMPOSE | PNG_RGB_TO_GRAY))
- {
- png_build_16bit_table(png_ptr, &png_ptr->gamma_16_to_1, shift,
- png_reciprocal(png_ptr->colorspace.gamma));
-
- /* Notice that the '16 from 1' table should be full precision, however
- * the lookup on this table still uses gamma_shift, so it can't be.
- * TODO: fix this.
- */
- png_build_16bit_table(png_ptr, &png_ptr->gamma_16_from_1, shift,
- png_ptr->screen_gamma > 0 ? png_reciprocal(png_ptr->screen_gamma) :
- png_ptr->colorspace.gamma/* Probably doing rgb_to_gray */);
- }
-#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
- }
-}
-#endif /* READ_GAMMA */
-
-/* HARDWARE OPTION SUPPORT */
-#ifdef PNG_SET_OPTION_SUPPORTED
-int PNGAPI
-png_set_option(png_structrp png_ptr, int option, int onoff)
-{
- if (png_ptr != NULL && option >= 0 && option < PNG_OPTION_NEXT &&
- (option & 1) == 0)
- {
- int mask = 3 << option;
- int setting = (2 + (onoff != 0)) << option;
- int current = png_ptr->options;
-
- png_ptr->options = (png_byte)((current & ~mask) | setting);
-
- return (current & mask) >> option;
- }
-
- return PNG_OPTION_INVALID;
-}
-#endif
-
-/* sRGB support */
-#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
- defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
-/* sRGB conversion tables; these are machine generated with the code in
- * contrib/tools/makesRGB.c. The actual sRGB transfer curve defined in the
- * specification (see the article at http://en.wikipedia.org/wiki/SRGB)
- * is used, not the gamma=1/2.2 approximation use elsewhere in libpng.
- * The sRGB to linear table is exact (to the nearest 16 bit linear fraction).
- * The inverse (linear to sRGB) table has accuracies as follows:
- *
- * For all possible (255*65535+1) input values:
- *
- * error: -0.515566 - 0.625971, 79441 (0.475369%) of readings inexact
- *
- * For the input values corresponding to the 65536 16-bit values:
- *
- * error: -0.513727 - 0.607759, 308 (0.469978%) of readings inexact
- *
- * In all cases the inexact readings are off by one.
- */
-
-#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
-/* The convert-to-sRGB table is only currently required for read. */
-const png_uint_16 png_sRGB_table[256] =
-{
- 0,20,40,60,80,99,119,139,
- 159,179,199,219,241,264,288,313,
- 340,367,396,427,458,491,526,562,
- 599,637,677,718,761,805,851,898,
- 947,997,1048,1101,1156,1212,1270,1330,
- 1391,1453,1517,1583,1651,1720,1790,1863,
- 1937,2013,2090,2170,2250,2333,2418,2504,
- 2592,2681,2773,2866,2961,3058,3157,3258,
- 3360,3464,3570,3678,3788,3900,4014,4129,
- 4247,4366,4488,4611,4736,4864,4993,5124,
- 5257,5392,5530,5669,5810,5953,6099,6246,
- 6395,6547,6700,6856,7014,7174,7335,7500,
- 7666,7834,8004,8177,8352,8528,8708,8889,
- 9072,9258,9445,9635,9828,10022,10219,10417,
- 10619,10822,11028,11235,11446,11658,11873,12090,
- 12309,12530,12754,12980,13209,13440,13673,13909,
- 14146,14387,14629,14874,15122,15371,15623,15878,
- 16135,16394,16656,16920,17187,17456,17727,18001,
- 18277,18556,18837,19121,19407,19696,19987,20281,
- 20577,20876,21177,21481,21787,22096,22407,22721,
- 23038,23357,23678,24002,24329,24658,24990,25325,
- 25662,26001,26344,26688,27036,27386,27739,28094,
- 28452,28813,29176,29542,29911,30282,30656,31033,
- 31412,31794,32179,32567,32957,33350,33745,34143,
- 34544,34948,35355,35764,36176,36591,37008,37429,
- 37852,38278,38706,39138,39572,40009,40449,40891,
- 41337,41785,42236,42690,43147,43606,44069,44534,
- 45002,45473,45947,46423,46903,47385,47871,48359,
- 48850,49344,49841,50341,50844,51349,51858,52369,
- 52884,53401,53921,54445,54971,55500,56032,56567,
- 57105,57646,58190,58737,59287,59840,60396,60955,
- 61517,62082,62650,63221,63795,64372,64952,65535
-};
-
-#endif /* simplified read only */
-
-/* The base/delta tables are required for both read and write (but currently
- * only the simplified versions.)
- */
-const png_uint_16 png_sRGB_base[512] =
-{
- 128,1782,3383,4644,5675,6564,7357,8074,
- 8732,9346,9921,10463,10977,11466,11935,12384,
- 12816,13233,13634,14024,14402,14769,15125,15473,
- 15812,16142,16466,16781,17090,17393,17690,17981,
- 18266,18546,18822,19093,19359,19621,19879,20133,
- 20383,20630,20873,21113,21349,21583,21813,22041,
- 22265,22487,22707,22923,23138,23350,23559,23767,
- 23972,24175,24376,24575,24772,24967,25160,25352,
- 25542,25730,25916,26101,26284,26465,26645,26823,
- 27000,27176,27350,27523,27695,27865,28034,28201,
- 28368,28533,28697,28860,29021,29182,29341,29500,
- 29657,29813,29969,30123,30276,30429,30580,30730,
- 30880,31028,31176,31323,31469,31614,31758,31902,
- 32045,32186,32327,32468,32607,32746,32884,33021,
- 33158,33294,33429,33564,33697,33831,33963,34095,
- 34226,34357,34486,34616,34744,34873,35000,35127,
- 35253,35379,35504,35629,35753,35876,35999,36122,
- 36244,36365,36486,36606,36726,36845,36964,37083,
- 37201,37318,37435,37551,37668,37783,37898,38013,
- 38127,38241,38354,38467,38580,38692,38803,38915,
- 39026,39136,39246,39356,39465,39574,39682,39790,
- 39898,40005,40112,40219,40325,40431,40537,40642,
- 40747,40851,40955,41059,41163,41266,41369,41471,
- 41573,41675,41777,41878,41979,42079,42179,42279,
- 42379,42478,42577,42676,42775,42873,42971,43068,
- 43165,43262,43359,43456,43552,43648,43743,43839,
- 43934,44028,44123,44217,44311,44405,44499,44592,
- 44685,44778,44870,44962,45054,45146,45238,45329,
- 45420,45511,45601,45692,45782,45872,45961,46051,
- 46140,46229,46318,46406,46494,46583,46670,46758,
- 46846,46933,47020,47107,47193,47280,47366,47452,
- 47538,47623,47709,47794,47879,47964,48048,48133,
- 48217,48301,48385,48468,48552,48635,48718,48801,
- 48884,48966,49048,49131,49213,49294,49376,49458,
- 49539,49620,49701,49782,49862,49943,50023,50103,
- 50183,50263,50342,50422,50501,50580,50659,50738,
- 50816,50895,50973,51051,51129,51207,51285,51362,
- 51439,51517,51594,51671,51747,51824,51900,51977,
- 52053,52129,52205,52280,52356,52432,52507,52582,
- 52657,52732,52807,52881,52956,53030,53104,53178,
- 53252,53326,53400,53473,53546,53620,53693,53766,
- 53839,53911,53984,54056,54129,54201,54273,54345,
- 54417,54489,54560,54632,54703,54774,54845,54916,
- 54987,55058,55129,55199,55269,55340,55410,55480,
- 55550,55620,55689,55759,55828,55898,55967,56036,
- 56105,56174,56243,56311,56380,56448,56517,56585,
- 56653,56721,56789,56857,56924,56992,57059,57127,
- 57194,57261,57328,57395,57462,57529,57595,57662,
- 57728,57795,57861,57927,57993,58059,58125,58191,
- 58256,58322,58387,58453,58518,58583,58648,58713,
- 58778,58843,58908,58972,59037,59101,59165,59230,
- 59294,59358,59422,59486,59549,59613,59677,59740,
- 59804,59867,59930,59993,60056,60119,60182,60245,
- 60308,60370,60433,60495,60558,60620,60682,60744,
- 60806,60868,60930,60992,61054,61115,61177,61238,
- 61300,61361,61422,61483,61544,61605,61666,61727,
- 61788,61848,61909,61969,62030,62090,62150,62211,
- 62271,62331,62391,62450,62510,62570,62630,62689,
- 62749,62808,62867,62927,62986,63045,63104,63163,
- 63222,63281,63340,63398,63457,63515,63574,63632,
- 63691,63749,63807,63865,63923,63981,64039,64097,
- 64155,64212,64270,64328,64385,64443,64500,64557,
- 64614,64672,64729,64786,64843,64900,64956,65013,
- 65070,65126,65183,65239,65296,65352,65409,65465
-};
-
-const png_byte png_sRGB_delta[512] =
-{
- 207,201,158,129,113,100,90,82,77,72,68,64,61,59,56,54,
- 52,50,49,47,46,45,43,42,41,40,39,39,38,37,36,36,
- 35,34,34,33,33,32,32,31,31,30,30,30,29,29,28,28,
- 28,27,27,27,27,26,26,26,25,25,25,25,24,24,24,24,
- 23,23,23,23,23,22,22,22,22,22,22,21,21,21,21,21,
- 21,20,20,20,20,20,20,20,20,19,19,19,19,19,19,19,
- 19,18,18,18,18,18,18,18,18,18,18,17,17,17,17,17,
- 17,17,17,17,17,17,16,16,16,16,16,16,16,16,16,16,
- 16,16,16,16,15,15,15,15,15,15,15,15,15,15,15,15,
- 15,15,15,15,14,14,14,14,14,14,14,14,14,14,14,14,
- 14,14,14,14,14,14,14,13,13,13,13,13,13,13,13,13,
- 13,13,13,13,13,13,13,13,13,13,13,13,13,13,12,12,
- 12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,12,
- 12,12,12,12,12,12,12,12,12,12,12,12,11,11,11,11,
- 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
- 11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,11,
- 11,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
- 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
- 10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,10,
- 10,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
- 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
- 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
- 9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,9,
- 9,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,8,
- 8,8,8,8,8,8,8,8,8,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,
- 7,7,7,7,7,7,7,7,7,7,7,7,7,7,7,7
-};
-#endif /* SIMPLIFIED READ/WRITE sRGB support */
-
-/* SIMPLIFIED READ/WRITE SUPPORT */
-#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
- defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
-static int
-png_image_free_function(png_voidp argument)
-{
- png_imagep image = png_voidcast(png_imagep, argument);
- png_controlp cp = image->opaque;
- png_control c;
-
- /* Double check that we have a png_ptr - it should be impossible to get here
- * without one.
- */
- if (cp->png_ptr == NULL)
- return 0;
-
- /* First free any data held in the control structure. */
-# ifdef PNG_STDIO_SUPPORTED
- if (cp->owned_file)
- {
- FILE *fp = png_voidcast(FILE*, cp->png_ptr->io_ptr);
- cp->owned_file = 0;
-
- /* Ignore errors here. */
- if (fp != NULL)
- {
- cp->png_ptr->io_ptr = NULL;
- (void)fclose(fp);
- }
- }
-# endif
-
- /* Copy the control structure so that the original, allocated, version can be
- * safely freed. Notice that a png_error here stops the remainder of the
- * cleanup, but this is probably fine because that would indicate bad memory
- * problems anyway.
- */
- c = *cp;
- image->opaque = &c;
- png_free(c.png_ptr, cp);
-
- /* Then the structures, calling the correct API. */
- if (c.for_write)
- {
-# ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
- png_destroy_write_struct(&c.png_ptr, &c.info_ptr);
-# else
- png_error(c.png_ptr, "simplified write not supported");
-# endif
- }
- else
- {
-# ifdef PNG_SIMPLIFIED_READ_SUPPORTED
- png_destroy_read_struct(&c.png_ptr, &c.info_ptr, NULL);
-# else
- png_error(c.png_ptr, "simplified read not supported");
-# endif
- }
-
- /* Success. */
- return 1;
-}
-
-void PNGAPI
-png_image_free(png_imagep image)
-{
- /* Safely call the real function, but only if doing so is safe at this point
- * (if not inside an error handling context). Otherwise assume
- * png_safe_execute will call this API after the return.
- */
- if (image != NULL && image->opaque != NULL &&
- image->opaque->error_buf == NULL)
- {
- /* Ignore errors here: */
- (void)png_safe_execute(image, png_image_free_function, image);
- image->opaque = NULL;
- }
-}
-
-int /* PRIVATE */
-png_image_error(png_imagep image, png_const_charp error_message)
-{
- /* Utility to log an error. */
- png_safecat(image->message, (sizeof image->message), 0, error_message);
- image->warning_or_error |= PNG_IMAGE_ERROR;
- png_image_free(image);
- return 0;
-}
-
-#endif /* SIMPLIFIED READ/WRITE */
-#endif /* defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED) */
+++ /dev/null
-
-/* png.h - header file for PNG reference library
- *
- * libpng version 1.6.3 - July 18, 2013
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license (See LICENSE, below)
- *
- * Authors and maintainers:
- * libpng versions 0.71, May 1995, through 0.88, January 1996: Guy Schalnat
- * libpng versions 0.89c, June 1996, through 0.96, May 1997: Andreas Dilger
- * libpng versions 0.97, January 1998, through 1.6.3 - July 18, 2013: Glenn
- * See also "Contributing Authors", below.
- *
- * Note about libpng version numbers:
- *
- * Due to various miscommunications, unforeseen code incompatibilities
- * and occasional factors outside the authors' control, version numbering
- * on the library has not always been consistent and straightforward.
- * The following table summarizes matters since version 0.89c, which was
- * the first widely used release:
- *
- * source png.h png.h shared-lib
- * version string int version
- * ------- ------ ----- ----------
- * 0.89c "1.0 beta 3" 0.89 89 1.0.89
- * 0.90 "1.0 beta 4" 0.90 90 0.90 [should have been 2.0.90]
- * 0.95 "1.0 beta 5" 0.95 95 0.95 [should have been 2.0.95]
- * 0.96 "1.0 beta 6" 0.96 96 0.96 [should have been 2.0.96]
- * 0.97b "1.00.97 beta 7" 1.00.97 97 1.0.1 [should have been 2.0.97]
- * 0.97c 0.97 97 2.0.97
- * 0.98 0.98 98 2.0.98
- * 0.99 0.99 98 2.0.99
- * 0.99a-m 0.99 99 2.0.99
- * 1.00 1.00 100 2.1.0 [100 should be 10000]
- * 1.0.0 (from here on, the 100 2.1.0 [100 should be 10000]
- * 1.0.1 png.h string is 10001 2.1.0
- * 1.0.1a-e identical to the 10002 from here on, the shared library
- * 1.0.2 source version) 10002 is 2.V where V is the source code
- * 1.0.2a-b 10003 version, except as noted.
- * 1.0.3 10003
- * 1.0.3a-d 10004
- * 1.0.4 10004
- * 1.0.4a-f 10005
- * 1.0.5 (+ 2 patches) 10005
- * 1.0.5a-d 10006
- * 1.0.5e-r 10100 (not source compatible)
- * 1.0.5s-v 10006 (not binary compatible)
- * 1.0.6 (+ 3 patches) 10006 (still binary incompatible)
- * 1.0.6d-f 10007 (still binary incompatible)
- * 1.0.6g 10007
- * 1.0.6h 10007 10.6h (testing xy.z so-numbering)
- * 1.0.6i 10007 10.6i
- * 1.0.6j 10007 2.1.0.6j (incompatible with 1.0.0)
- * 1.0.7beta11-14 DLLNUM 10007 2.1.0.7beta11-14 (binary compatible)
- * 1.0.7beta15-18 1 10007 2.1.0.7beta15-18 (binary compatible)
- * 1.0.7rc1-2 1 10007 2.1.0.7rc1-2 (binary compatible)
- * 1.0.7 1 10007 (still compatible)
- * 1.0.8beta1-4 1 10008 2.1.0.8beta1-4
- * 1.0.8rc1 1 10008 2.1.0.8rc1
- * 1.0.8 1 10008 2.1.0.8
- * 1.0.9beta1-6 1 10009 2.1.0.9beta1-6
- * 1.0.9rc1 1 10009 2.1.0.9rc1
- * 1.0.9beta7-10 1 10009 2.1.0.9beta7-10
- * 1.0.9rc2 1 10009 2.1.0.9rc2
- * 1.0.9 1 10009 2.1.0.9
- * 1.0.10beta1 1 10010 2.1.0.10beta1
- * 1.0.10rc1 1 10010 2.1.0.10rc1
- * 1.0.10 1 10010 2.1.0.10
- * 1.0.11beta1-3 1 10011 2.1.0.11beta1-3
- * 1.0.11rc1 1 10011 2.1.0.11rc1
- * 1.0.11 1 10011 2.1.0.11
- * 1.0.12beta1-2 2 10012 2.1.0.12beta1-2
- * 1.0.12rc1 2 10012 2.1.0.12rc1
- * 1.0.12 2 10012 2.1.0.12
- * 1.1.0a-f - 10100 2.1.1.0a-f (branch abandoned)
- * 1.2.0beta1-2 2 10200 2.1.2.0beta1-2
- * 1.2.0beta3-5 3 10200 3.1.2.0beta3-5
- * 1.2.0rc1 3 10200 3.1.2.0rc1
- * 1.2.0 3 10200 3.1.2.0
- * 1.2.1beta1-4 3 10201 3.1.2.1beta1-4
- * 1.2.1rc1-2 3 10201 3.1.2.1rc1-2
- * 1.2.1 3 10201 3.1.2.1
- * 1.2.2beta1-6 12 10202 12.so.0.1.2.2beta1-6
- * 1.0.13beta1 10 10013 10.so.0.1.0.13beta1
- * 1.0.13rc1 10 10013 10.so.0.1.0.13rc1
- * 1.2.2rc1 12 10202 12.so.0.1.2.2rc1
- * 1.0.13 10 10013 10.so.0.1.0.13
- * 1.2.2 12 10202 12.so.0.1.2.2
- * 1.2.3rc1-6 12 10203 12.so.0.1.2.3rc1-6
- * 1.2.3 12 10203 12.so.0.1.2.3
- * 1.2.4beta1-3 13 10204 12.so.0.1.2.4beta1-3
- * 1.0.14rc1 13 10014 10.so.0.1.0.14rc1
- * 1.2.4rc1 13 10204 12.so.0.1.2.4rc1
- * 1.0.14 10 10014 10.so.0.1.0.14
- * 1.2.4 13 10204 12.so.0.1.2.4
- * 1.2.5beta1-2 13 10205 12.so.0.1.2.5beta1-2
- * 1.0.15rc1-3 10 10015 10.so.0.1.0.15rc1-3
- * 1.2.5rc1-3 13 10205 12.so.0.1.2.5rc1-3
- * 1.0.15 10 10015 10.so.0.1.0.15
- * 1.2.5 13 10205 12.so.0.1.2.5
- * 1.2.6beta1-4 13 10206 12.so.0.1.2.6beta1-4
- * 1.0.16 10 10016 10.so.0.1.0.16
- * 1.2.6 13 10206 12.so.0.1.2.6
- * 1.2.7beta1-2 13 10207 12.so.0.1.2.7beta1-2
- * 1.0.17rc1 10 10017 12.so.0.1.0.17rc1
- * 1.2.7rc1 13 10207 12.so.0.1.2.7rc1
- * 1.0.17 10 10017 12.so.0.1.0.17
- * 1.2.7 13 10207 12.so.0.1.2.7
- * 1.2.8beta1-5 13 10208 12.so.0.1.2.8beta1-5
- * 1.0.18rc1-5 10 10018 12.so.0.1.0.18rc1-5
- * 1.2.8rc1-5 13 10208 12.so.0.1.2.8rc1-5
- * 1.0.18 10 10018 12.so.0.1.0.18
- * 1.2.8 13 10208 12.so.0.1.2.8
- * 1.2.9beta1-3 13 10209 12.so.0.1.2.9beta1-3
- * 1.2.9beta4-11 13 10209 12.so.0.9[.0]
- * 1.2.9rc1 13 10209 12.so.0.9[.0]
- * 1.2.9 13 10209 12.so.0.9[.0]
- * 1.2.10beta1-7 13 10210 12.so.0.10[.0]
- * 1.2.10rc1-2 13 10210 12.so.0.10[.0]
- * 1.2.10 13 10210 12.so.0.10[.0]
- * 1.4.0beta1-5 14 10400 14.so.0.0[.0]
- * 1.2.11beta1-4 13 10211 12.so.0.11[.0]
- * 1.4.0beta7-8 14 10400 14.so.0.0[.0]
- * 1.2.11 13 10211 12.so.0.11[.0]
- * 1.2.12 13 10212 12.so.0.12[.0]
- * 1.4.0beta9-14 14 10400 14.so.0.0[.0]
- * 1.2.13 13 10213 12.so.0.13[.0]
- * 1.4.0beta15-36 14 10400 14.so.0.0[.0]
- * 1.4.0beta37-87 14 10400 14.so.14.0[.0]
- * 1.4.0rc01 14 10400 14.so.14.0[.0]
- * 1.4.0beta88-109 14 10400 14.so.14.0[.0]
- * 1.4.0rc02-08 14 10400 14.so.14.0[.0]
- * 1.4.0 14 10400 14.so.14.0[.0]
- * 1.4.1beta01-03 14 10401 14.so.14.1[.0]
- * 1.4.1rc01 14 10401 14.so.14.1[.0]
- * 1.4.1beta04-12 14 10401 14.so.14.1[.0]
- * 1.4.1 14 10401 14.so.14.1[.0]
- * 1.4.2 14 10402 14.so.14.2[.0]
- * 1.4.3 14 10403 14.so.14.3[.0]
- * 1.4.4 14 10404 14.so.14.4[.0]
- * 1.5.0beta01-58 15 10500 15.so.15.0[.0]
- * 1.5.0rc01-07 15 10500 15.so.15.0[.0]
- * 1.5.0 15 10500 15.so.15.0[.0]
- * 1.5.1beta01-11 15 10501 15.so.15.1[.0]
- * 1.5.1rc01-02 15 10501 15.so.15.1[.0]
- * 1.5.1 15 10501 15.so.15.1[.0]
- * 1.5.2beta01-03 15 10502 15.so.15.2[.0]
- * 1.5.2rc01-03 15 10502 15.so.15.2[.0]
- * 1.5.2 15 10502 15.so.15.2[.0]
- * 1.5.3beta01-10 15 10503 15.so.15.3[.0]
- * 1.5.3rc01-02 15 10503 15.so.15.3[.0]
- * 1.5.3beta11 15 10503 15.so.15.3[.0]
- * 1.5.3 [omitted]
- * 1.5.4beta01-08 15 10504 15.so.15.4[.0]
- * 1.5.4rc01 15 10504 15.so.15.4[.0]
- * 1.5.4 15 10504 15.so.15.4[.0]
- * 1.5.5beta01-08 15 10505 15.so.15.5[.0]
- * 1.5.5rc01 15 10505 15.so.15.5[.0]
- * 1.5.5 15 10505 15.so.15.5[.0]
- * 1.5.6beta01-07 15 10506 15.so.15.6[.0]
- * 1.5.6rc01-03 15 10506 15.so.15.6[.0]
- * 1.5.6 15 10506 15.so.15.6[.0]
- * 1.5.7beta01-05 15 10507 15.so.15.7[.0]
- * 1.5.7rc01-03 15 10507 15.so.15.7[.0]
- * 1.5.7 15 10507 15.so.15.7[.0]
- * 1.6.0beta01-40 16 10600 16.so.16.0[.0]
- * 1.6.0rc01-08 16 10600 16.so.16.0[.0]
- * 1.6.0 16 10600 16.so.16.0[.0]
- * 1.6.1beta01-09 16 10601 16.so.16.1[.0]
- * 1.6.1rc01 16 10601 16.so.16.1[.0]
- * 1.6.1 16 10601 16.so.16.1[.0]
- * 1.6.2beta01 16 10602 16.so.16.2[.0]
- * 1.6.2rc01-06 16 10602 16.so.16.2[.0]
- * 1.6.2 16 10602 16.so.16.2[.0]
- * 1.6.3beta01-11 16 10603 16.so.16.3[.0]
- * 1.6.3rc01 16 10603 16.so.16.3[.0]
- * 1.6.3 16 10603 16.so.16.3[.0]
- *
- * Henceforth the source version will match the shared-library major
- * and minor numbers; the shared-library major version number will be
- * used for changes in backward compatibility, as it is intended. The
- * PNG_LIBPNG_VER macro, which is not used within libpng but is available
- * for applications, is an unsigned integer of the form xyyzz corresponding
- * to the source version x.y.z (leading zeros in y and z). Beta versions
- * were given the previous public release number plus a letter, until
- * version 1.0.6j; from then on they were given the upcoming public
- * release number plus "betaNN" or "rcNN".
- *
- * Binary incompatibility exists only when applications make direct access
- * to the info_ptr or png_ptr members through png.h, and the compiled
- * application is loaded with a different version of the library.
- *
- * DLLNUM will change each time there are forward or backward changes
- * in binary compatibility (e.g., when a new feature is added).
- *
- * See libpng-manual.txt or libpng.3 for more information. The PNG
- * specification is available as a W3C Recommendation and as an ISO
- * Specification, <http://www.w3.org/TR/2003/REC-PNG-20031110/
- */
-
-/*
- * COPYRIGHT NOTICE, DISCLAIMER, and LICENSE:
- *
- * If you modify libpng you may insert additional notices immediately following
- * this sentence.
- *
- * This code is released under the libpng license.
- *
- * libpng versions 1.2.6, August 15, 2004, through 1.6.3, July 18, 2013, are
- * Copyright (c) 2004, 2006-2013 Glenn Randers-Pehrson, and are
- * distributed according to the same disclaimer and license as libpng-1.2.5
- * with the following individual added to the list of Contributing Authors:
- *
- * Cosmin Truta
- *
- * libpng versions 1.0.7, July 1, 2000, through 1.2.5, October 3, 2002, are
- * Copyright (c) 2000-2002 Glenn Randers-Pehrson, and are
- * distributed according to the same disclaimer and license as libpng-1.0.6
- * with the following individuals added to the list of Contributing Authors:
- *
- * Simon-Pierre Cadieux
- * Eric S. Raymond
- * Gilles Vollant
- *
- * and with the following additions to the disclaimer:
- *
- * There is no warranty against interference with your enjoyment of the
- * library or against infringement. There is no warranty that our
- * efforts or the library will fulfill any of your particular purposes
- * or needs. This library is provided with all faults, and the entire
- * risk of satisfactory quality, performance, accuracy, and effort is with
- * the user.
- *
- * libpng versions 0.97, January 1998, through 1.0.6, March 20, 2000, are
- * Copyright (c) 1998, 1999, 2000 Glenn Randers-Pehrson, and are
- * distributed according to the same disclaimer and license as libpng-0.96,
- * with the following individuals added to the list of Contributing Authors:
- *
- * Tom Lane
- * Glenn Randers-Pehrson
- * Willem van Schaik
- *
- * libpng versions 0.89, June 1996, through 0.96, May 1997, are
- * Copyright (c) 1996, 1997 Andreas Dilger
- * Distributed according to the same disclaimer and license as libpng-0.88,
- * with the following individuals added to the list of Contributing Authors:
- *
- * John Bowler
- * Kevin Bracey
- * Sam Bushell
- * Magnus Holmgren
- * Greg Roelofs
- * Tom Tanner
- *
- * libpng versions 0.5, May 1995, through 0.88, January 1996, are
- * Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.
- *
- * For the purposes of this copyright and license, "Contributing Authors"
- * is defined as the following set of individuals:
- *
- * Andreas Dilger
- * Dave Martindale
- * Guy Eric Schalnat
- * Paul Schmidt
- * Tim Wegner
- *
- * The PNG Reference Library is supplied "AS IS". The Contributing Authors
- * and Group 42, Inc. disclaim all warranties, expressed or implied,
- * including, without limitation, the warranties of merchantability and of
- * fitness for any purpose. The Contributing Authors and Group 42, Inc.
- * assume no liability for direct, indirect, incidental, special, exemplary,
- * or consequential damages, which may result from the use of the PNG
- * Reference Library, even if advised of the possibility of such damage.
- *
- * Permission is hereby granted to use, copy, modify, and distribute this
- * source code, or portions hereof, for any purpose, without fee, subject
- * to the following restrictions:
- *
- * 1. The origin of this source code must not be misrepresented.
- *
- * 2. Altered versions must be plainly marked as such and must not
- * be misrepresented as being the original source.
- *
- * 3. This Copyright notice may not be removed or altered from
- * any source or altered source distribution.
- *
- * The Contributing Authors and Group 42, Inc. specifically permit, without
- * fee, and encourage the use of this source code as a component to
- * supporting the PNG file format in commercial products. If you use this
- * source code in a product, acknowledgment is not required but would be
- * appreciated.
- */
-
-/*
- * A "png_get_copyright" function is available, for convenient use in "about"
- * boxes and the like:
- *
- * printf("%s", png_get_copyright(NULL));
- *
- * Also, the PNG logo (in PNG format, of course) is supplied in the
- * files "pngbar.png" and "pngbar.jpg (88x31) and "pngnow.png" (98x31).
- */
-
-/*
- * Libpng is OSI Certified Open Source Software. OSI Certified is a
- * certification mark of the Open Source Initiative.
- */
-
-/*
- * The contributing authors would like to thank all those who helped
- * with testing, bug fixes, and patience. This wouldn't have been
- * possible without all of you.
- *
- * Thanks to Frank J. T. Wojcik for helping with the documentation.
- */
-
-/*
- * Y2K compliance in libpng:
- * =========================
- *
- * July 18, 2013
- *
- * Since the PNG Development group is an ad-hoc body, we can't make
- * an official declaration.
- *
- * This is your unofficial assurance that libpng from version 0.71 and
- * upward through 1.6.3 are Y2K compliant. It is my belief that
- * earlier versions were also Y2K compliant.
- *
- * Libpng only has two year fields. One is a 2-byte unsigned integer
- * that will hold years up to 65535. The other, which is deprecated,
- * holds the date in text format, and will hold years up to 9999.
- *
- * The integer is
- * "png_uint_16 year" in png_time_struct.
- *
- * The string is
- * "char time_buffer[29]" in png_struct. This is no longer used
- * in libpng-1.6.x and will be removed from libpng-1.7.0.
- *
- * There are seven time-related functions:
- * png.c: png_convert_to_rfc_1123_buffer() in png.c
- * (formerly png_convert_to_rfc_1123() prior to libpng-1.5.x and
- * png_convert_to_rfc_1152() in error prior to libpng-0.98)
- * png_convert_from_struct_tm() in pngwrite.c, called in pngwrite.c
- * png_convert_from_time_t() in pngwrite.c
- * png_get_tIME() in pngget.c
- * png_handle_tIME() in pngrutil.c, called in pngread.c
- * png_set_tIME() in pngset.c
- * png_write_tIME() in pngwutil.c, called in pngwrite.c
- *
- * All handle dates properly in a Y2K environment. The
- * png_convert_from_time_t() function calls gmtime() to convert from system
- * clock time, which returns (year - 1900), which we properly convert to
- * the full 4-digit year. There is a possibility that libpng applications
- * are not passing 4-digit years into the png_convert_to_rfc_1123_buffer()
- * function, or that they are incorrectly passing only a 2-digit year
- * instead of "year - 1900" into the png_convert_from_struct_tm() function,
- * but this is not under our control. The libpng documentation has always
- * stated that it works with 4-digit years, and the APIs have been
- * documented as such.
- *
- * The tIME chunk itself is also Y2K compliant. It uses a 2-byte unsigned
- * integer to hold the year, and can hold years as large as 65535.
- *
- * zlib, upon which libpng depends, is also Y2K compliant. It contains
- * no date-related code.
- *
- * Glenn Randers-Pehrson
- * libpng maintainer
- * PNG Development Group
- */
-
-#ifndef PNG_H
-#define PNG_H
-
-/* This is not the place to learn how to use libpng. The file libpng-manual.txt
- * describes how to use libpng, and the file example.c summarizes it
- * with some code on which to build. This file is useful for looking
- * at the actual function definitions and structure components.
- *
- * If you just need to read a PNG file and don't want to read the documentation
- * skip to the end of this file and read the section entitled 'simplified API'.
- */
-
-/* Version information for png.h - this should match the version in png.c */
-#define PNG_LIBPNG_VER_STRING "1.6.3"
-#define PNG_HEADER_VERSION_STRING \
- " libpng version 1.6.3 - July 18, 2013\n"
-
-#define PNG_LIBPNG_VER_SONUM 16
-#define PNG_LIBPNG_VER_DLLNUM 16
-
-/* These should match the first 3 components of PNG_LIBPNG_VER_STRING: */
-#define PNG_LIBPNG_VER_MAJOR 1
-#define PNG_LIBPNG_VER_MINOR 6
-#define PNG_LIBPNG_VER_RELEASE 3
-
-/* This should match the numeric part of the final component of
- * PNG_LIBPNG_VER_STRING, omitting any leading zero:
- */
-
-#define PNG_LIBPNG_VER_BUILD 0
-
-/* Release Status */
-#define PNG_LIBPNG_BUILD_ALPHA 1
-#define PNG_LIBPNG_BUILD_BETA 2
-#define PNG_LIBPNG_BUILD_RC 3
-#define PNG_LIBPNG_BUILD_STABLE 4
-#define PNG_LIBPNG_BUILD_RELEASE_STATUS_MASK 7
-
-/* Release-Specific Flags */
-#define PNG_LIBPNG_BUILD_PATCH 8 /* Can be OR'ed with
- PNG_LIBPNG_BUILD_STABLE only */
-#define PNG_LIBPNG_BUILD_PRIVATE 16 /* Cannot be OR'ed with
- PNG_LIBPNG_BUILD_SPECIAL */
-#define PNG_LIBPNG_BUILD_SPECIAL 32 /* Cannot be OR'ed with
- PNG_LIBPNG_BUILD_PRIVATE */
-
-#define PNG_LIBPNG_BUILD_BASE_TYPE PNG_LIBPNG_BUILD_STABLE
-
-/* Careful here. At one time, Guy wanted to use 082, but that would be octal.
- * We must not include leading zeros.
- * Versions 0.7 through 1.0.0 were in the range 0 to 100 here (only
- * version 1.0.0 was mis-numbered 100 instead of 10000). From
- * version 1.0.1 it's xxyyzz, where x=major, y=minor, z=release
- */
-#define PNG_LIBPNG_VER 10603 /* 1.6.3 */
-
-/* Library configuration: these options cannot be changed after
- * the library has been built.
- */
-#ifndef PNGLCONF_H
- /* If pnglibconf.h is missing, you can
- * copy scripts/pnglibconf.h.prebuilt to pnglibconf.h
- */
-# include "pnglibconf.h"
-#endif
-
-#ifndef PNG_VERSION_INFO_ONLY
- /* Machine specific configuration. */
-# include "pngconf.h"
-#endif
-
-/*
- * Added at libpng-1.2.8
- *
- * Ref MSDN: Private as priority over Special
- * VS_FF_PRIVATEBUILD File *was not* built using standard release
- * procedures. If this value is given, the StringFileInfo block must
- * contain a PrivateBuild string.
- *
- * VS_FF_SPECIALBUILD File *was* built by the original company using
- * standard release procedures but is a variation of the standard
- * file of the same version number. If this value is given, the
- * StringFileInfo block must contain a SpecialBuild string.
- */
-
-#ifdef PNG_USER_PRIVATEBUILD /* From pnglibconf.h */
-# define PNG_LIBPNG_BUILD_TYPE \
- (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_PRIVATE)
-#else
-# ifdef PNG_LIBPNG_SPECIALBUILD
-# define PNG_LIBPNG_BUILD_TYPE \
- (PNG_LIBPNG_BUILD_BASE_TYPE | PNG_LIBPNG_BUILD_SPECIAL)
-# else
-# define PNG_LIBPNG_BUILD_TYPE (PNG_LIBPNG_BUILD_BASE_TYPE)
-# endif
-#endif
-
-#ifndef PNG_VERSION_INFO_ONLY
-
-/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-/* Version information for C files, stored in png.c. This had better match
- * the version above.
- */
-#define png_libpng_ver png_get_header_ver(NULL)
-
-/* This file is arranged in several sections:
- *
- * 1. Any configuration options that can be specified by for the application
- * code when it is built. (Build time configuration is in pnglibconf.h)
- * 2. Type definitions (base types are defined in pngconf.h), structure
- * definitions.
- * 3. Exported library functions.
- * 4. Simplified API.
- *
- * The library source code has additional files (principally pngpriv.h) that
- * allow configuration of the library.
- */
-/* Section 1: run time configuration
- * See pnglibconf.h for build time configuration
- *
- * Run time configuration allows the application to choose between
- * implementations of certain arithmetic APIs. The default is set
- * at build time and recorded in pnglibconf.h, but it is safe to
- * override these (and only these) settings. Note that this won't
- * change what the library does, only application code, and the
- * settings can (and probably should) be made on a per-file basis
- * by setting the #defines before including png.h
- *
- * Use macros to read integers from PNG data or use the exported
- * functions?
- * PNG_USE_READ_MACROS: use the macros (see below) Note that
- * the macros evaluate their argument multiple times.
- * PNG_NO_USE_READ_MACROS: call the relevant library function.
- *
- * Use the alternative algorithm for compositing alpha samples that
- * does not use division?
- * PNG_READ_COMPOSITE_NODIV_SUPPORTED: use the 'no division'
- * algorithm.
- * PNG_NO_READ_COMPOSITE_NODIV: use the 'division' algorithm.
- *
- * How to handle benign errors if PNG_ALLOW_BENIGN_ERRORS is
- * false?
- * PNG_ALLOW_BENIGN_ERRORS: map calls to the benign error
- * APIs to png_warning.
- * Otherwise the calls are mapped to png_error.
- */
-
-/* Section 2: type definitions, including structures and compile time
- * constants.
- * See pngconf.h for base types that vary by machine/system
- */
-
-/* This triggers a compiler error in png.c, if png.c and png.h
- * do not agree upon the version number.
- */
-typedef char* png_libpng_version_1_6_3;
-
-/* Basic control structions. Read libpng-manual.txt or libpng.3 for more info.
- *
- * png_struct is the cache of information used while reading or writing a single
- * PNG file. One of these is always required, although the simplified API
- * (below) hides the creation and destruction of it.
- */
-typedef struct png_struct_def png_struct;
-typedef const png_struct * png_const_structp;
-typedef png_struct * png_structp;
-typedef png_struct * * png_structpp;
-
-/* png_info contains information read from or to be written to a PNG file. One
- * or more of these must exist while reading or creating a PNG file. The
- * information is not used by libpng during read but is used to control what
- * gets written when a PNG file is created. "png_get_" function calls read
- * information during read and "png_set_" functions calls write information
- * when creating a PNG.
- * been moved into a separate header file that is not accessible to
- * applications. Read libpng-manual.txt or libpng.3 for more info.
- */
-typedef struct png_info_def png_info;
-typedef png_info * png_infop;
-typedef const png_info * png_const_infop;
-typedef png_info * * png_infopp;
-
-/* Types with names ending 'p' are pointer types. The corresponding types with
- * names ending 'rp' are identical pointer types except that the pointer is
- * marked 'restrict', which means that it is the only pointer to the object
- * passed to the function. Applications should not use the 'restrict' types;
- * it is always valid to pass 'p' to a pointer with a function argument of the
- * corresponding 'rp' type. Different compilers have different rules with
- * regard to type matching in the presence of 'restrict'. For backward
- * compatibility libpng callbacks never have 'restrict' in their parameters and,
- * consequentially, writing portable application code is extremely difficult if
- * an attempt is made to use 'restrict'.
- */
-typedef png_struct * PNG_RESTRICT png_structrp;
-typedef const png_struct * PNG_RESTRICT png_const_structrp;
-typedef png_info * PNG_RESTRICT png_inforp;
-typedef const png_info * PNG_RESTRICT png_const_inforp;
-
-/* Three color definitions. The order of the red, green, and blue, (and the
- * exact size) is not important, although the size of the fields need to
- * be png_byte or png_uint_16 (as defined below).
- */
-typedef struct png_color_struct
-{
- png_byte red;
- png_byte green;
- png_byte blue;
-} png_color;
-typedef png_color * png_colorp;
-typedef const png_color * png_const_colorp;
-typedef png_color * * png_colorpp;
-
-typedef struct png_color_16_struct
-{
- png_byte index; /* used for palette files */
- png_uint_16 red; /* for use in red green blue files */
- png_uint_16 green;
- png_uint_16 blue;
- png_uint_16 gray; /* for use in grayscale files */
-} png_color_16;
-typedef png_color_16 * png_color_16p;
-typedef const png_color_16 * png_const_color_16p;
-typedef png_color_16 * * png_color_16pp;
-
-typedef struct png_color_8_struct
-{
- png_byte red; /* for use in red green blue files */
- png_byte green;
- png_byte blue;
- png_byte gray; /* for use in grayscale files */
- png_byte alpha; /* for alpha channel files */
-} png_color_8;
-typedef png_color_8 * png_color_8p;
-typedef const png_color_8 * png_const_color_8p;
-typedef png_color_8 * * png_color_8pp;
-
-/*
- * The following two structures are used for the in-core representation
- * of sPLT chunks.
- */
-typedef struct png_sPLT_entry_struct
-{
- png_uint_16 red;
- png_uint_16 green;
- png_uint_16 blue;
- png_uint_16 alpha;
- png_uint_16 frequency;
-} png_sPLT_entry;
-typedef png_sPLT_entry * png_sPLT_entryp;
-typedef const png_sPLT_entry * png_const_sPLT_entryp;
-typedef png_sPLT_entry * * png_sPLT_entrypp;
-
-/* When the depth of the sPLT palette is 8 bits, the color and alpha samples
- * occupy the LSB of their respective members, and the MSB of each member
- * is zero-filled. The frequency member always occupies the full 16 bits.
- */
-
-typedef struct png_sPLT_struct
-{
- png_charp name; /* palette name */
- png_byte depth; /* depth of palette samples */
- png_sPLT_entryp entries; /* palette entries */
- png_int_32 nentries; /* number of palette entries */
-} png_sPLT_t;
-typedef png_sPLT_t * png_sPLT_tp;
-typedef const png_sPLT_t * png_const_sPLT_tp;
-typedef png_sPLT_t * * png_sPLT_tpp;
-
-#ifdef PNG_TEXT_SUPPORTED
-/* png_text holds the contents of a text/ztxt/itxt chunk in a PNG file,
- * and whether that contents is compressed or not. The "key" field
- * points to a regular zero-terminated C string. The "text" fields can be a
- * regular C string, an empty string, or a NULL pointer.
- * However, the structure returned by png_get_text() will always contain
- * the "text" field as a regular zero-terminated C string (possibly
- * empty), never a NULL pointer, so it can be safely used in printf() and
- * other string-handling functions. Note that the "itxt_length", "lang", and
- * "lang_key" members of the structure only exist when the library is built
- * with iTXt chunk support. Prior to libpng-1.4.0 the library was built by
- * default without iTXt support. Also note that when iTXt *is* supported,
- * the "lang" and "lang_key" fields contain NULL pointers when the
- * "compression" field contains * PNG_TEXT_COMPRESSION_NONE or
- * PNG_TEXT_COMPRESSION_zTXt. Note that the "compression value" is not the
- * same as what appears in the PNG tEXt/zTXt/iTXt chunk's "compression flag"
- * which is always 0 or 1, or its "compression method" which is always 0.
- */
-typedef struct png_text_struct
-{
- int compression; /* compression value:
- -1: tEXt, none
- 0: zTXt, deflate
- 1: iTXt, none
- 2: iTXt, deflate */
- png_charp key; /* keyword, 1-79 character description of "text" */
- png_charp text; /* comment, may be an empty string (ie "")
- or a NULL pointer */
- png_size_t text_length; /* length of the text string */
- png_size_t itxt_length; /* length of the itxt string */
- png_charp lang; /* language code, 0-79 characters
- or a NULL pointer */
- png_charp lang_key; /* keyword translated UTF-8 string, 0 or more
- chars or a NULL pointer */
-} png_text;
-typedef png_text * png_textp;
-typedef const png_text * png_const_textp;
-typedef png_text * * png_textpp;
-#endif
-
-/* Supported compression types for text in PNG files (tEXt, and zTXt).
- * The values of the PNG_TEXT_COMPRESSION_ defines should NOT be changed. */
-#define PNG_TEXT_COMPRESSION_NONE_WR -3
-#define PNG_TEXT_COMPRESSION_zTXt_WR -2
-#define PNG_TEXT_COMPRESSION_NONE -1
-#define PNG_TEXT_COMPRESSION_zTXt 0
-#define PNG_ITXT_COMPRESSION_NONE 1
-#define PNG_ITXT_COMPRESSION_zTXt 2
-#define PNG_TEXT_COMPRESSION_LAST 3 /* Not a valid value */
-
-/* png_time is a way to hold the time in an machine independent way.
- * Two conversions are provided, both from time_t and struct tm. There
- * is no portable way to convert to either of these structures, as far
- * as I know. If you know of a portable way, send it to me. As a side
- * note - PNG has always been Year 2000 compliant!
- */
-typedef struct png_time_struct
-{
- png_uint_16 year; /* full year, as in, 1995 */
- png_byte month; /* month of year, 1 - 12 */
- png_byte day; /* day of month, 1 - 31 */
- png_byte hour; /* hour of day, 0 - 23 */
- png_byte minute; /* minute of hour, 0 - 59 */
- png_byte second; /* second of minute, 0 - 60 (for leap seconds) */
-} png_time;
-typedef png_time * png_timep;
-typedef const png_time * png_const_timep;
-typedef png_time * * png_timepp;
-
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-/* png_unknown_chunk is a structure to hold queued chunks for which there is
- * no specific support. The idea is that we can use this to queue
- * up private chunks for output even though the library doesn't actually
- * know about their semantics.
- *
- * The data in the structure is set by libpng on read and used on write.
- */
-typedef struct png_unknown_chunk_t
-{
- png_byte name[5]; /* Textual chunk name with '\0' terminator */
- png_byte *data; /* Data, should not be modified on read! */
- png_size_t size;
-
- /* On write 'location' must be set using the flag values listed below.
- * Notice that on read it is set by libpng however the values stored have
- * more bits set than are listed below. Always treat the value as a
- * bitmask. On write set only one bit - setting multiple bits may cause the
- * chunk to be written in multiple places.
- */
- png_byte location; /* mode of operation at read time */
-}
-png_unknown_chunk;
-
-typedef png_unknown_chunk * png_unknown_chunkp;
-typedef const png_unknown_chunk * png_const_unknown_chunkp;
-typedef png_unknown_chunk * * png_unknown_chunkpp;
-#endif
-
-/* Flag values for the unknown chunk location byte. */
-#define PNG_HAVE_IHDR 0x01
-#define PNG_HAVE_PLTE 0x02
-#define PNG_AFTER_IDAT 0x08
-
-/* Maximum positive integer used in PNG is (2^31)-1 */
-#define PNG_UINT_31_MAX ((png_uint_32)0x7fffffffL)
-#define PNG_UINT_32_MAX ((png_uint_32)(-1))
-#define PNG_SIZE_MAX ((png_size_t)(-1))
-
-/* These are constants for fixed point values encoded in the
- * PNG specification manner (x100000)
- */
-#define PNG_FP_1 100000
-#define PNG_FP_HALF 50000
-#define PNG_FP_MAX ((png_fixed_point)0x7fffffffL)
-#define PNG_FP_MIN (-PNG_FP_MAX)
-
-/* These describe the color_type field in png_info. */
-/* color type masks */
-#define PNG_COLOR_MASK_PALETTE 1
-#define PNG_COLOR_MASK_COLOR 2
-#define PNG_COLOR_MASK_ALPHA 4
-
-/* color types. Note that not all combinations are legal */
-#define PNG_COLOR_TYPE_GRAY 0
-#define PNG_COLOR_TYPE_PALETTE (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_PALETTE)
-#define PNG_COLOR_TYPE_RGB (PNG_COLOR_MASK_COLOR)
-#define PNG_COLOR_TYPE_RGB_ALPHA (PNG_COLOR_MASK_COLOR | PNG_COLOR_MASK_ALPHA)
-#define PNG_COLOR_TYPE_GRAY_ALPHA (PNG_COLOR_MASK_ALPHA)
-/* aliases */
-#define PNG_COLOR_TYPE_RGBA PNG_COLOR_TYPE_RGB_ALPHA
-#define PNG_COLOR_TYPE_GA PNG_COLOR_TYPE_GRAY_ALPHA
-
-/* This is for compression type. PNG 1.0-1.2 only define the single type. */
-#define PNG_COMPRESSION_TYPE_BASE 0 /* Deflate method 8, 32K window */
-#define PNG_COMPRESSION_TYPE_DEFAULT PNG_COMPRESSION_TYPE_BASE
-
-/* This is for filter type. PNG 1.0-1.2 only define the single type. */
-#define PNG_FILTER_TYPE_BASE 0 /* Single row per-byte filtering */
-#define PNG_INTRAPIXEL_DIFFERENCING 64 /* Used only in MNG datastreams */
-#define PNG_FILTER_TYPE_DEFAULT PNG_FILTER_TYPE_BASE
-
-/* These are for the interlacing type. These values should NOT be changed. */
-#define PNG_INTERLACE_NONE 0 /* Non-interlaced image */
-#define PNG_INTERLACE_ADAM7 1 /* Adam7 interlacing */
-#define PNG_INTERLACE_LAST 2 /* Not a valid value */
-
-/* These are for the oFFs chunk. These values should NOT be changed. */
-#define PNG_OFFSET_PIXEL 0 /* Offset in pixels */
-#define PNG_OFFSET_MICROMETER 1 /* Offset in micrometers (1/10^6 meter) */
-#define PNG_OFFSET_LAST 2 /* Not a valid value */
-
-/* These are for the pCAL chunk. These values should NOT be changed. */
-#define PNG_EQUATION_LINEAR 0 /* Linear transformation */
-#define PNG_EQUATION_BASE_E 1 /* Exponential base e transform */
-#define PNG_EQUATION_ARBITRARY 2 /* Arbitrary base exponential transform */
-#define PNG_EQUATION_HYPERBOLIC 3 /* Hyperbolic sine transformation */
-#define PNG_EQUATION_LAST 4 /* Not a valid value */
-
-/* These are for the sCAL chunk. These values should NOT be changed. */
-#define PNG_SCALE_UNKNOWN 0 /* unknown unit (image scale) */
-#define PNG_SCALE_METER 1 /* meters per pixel */
-#define PNG_SCALE_RADIAN 2 /* radians per pixel */
-#define PNG_SCALE_LAST 3 /* Not a valid value */
-
-/* These are for the pHYs chunk. These values should NOT be changed. */
-#define PNG_RESOLUTION_UNKNOWN 0 /* pixels/unknown unit (aspect ratio) */
-#define PNG_RESOLUTION_METER 1 /* pixels/meter */
-#define PNG_RESOLUTION_LAST 2 /* Not a valid value */
-
-/* These are for the sRGB chunk. These values should NOT be changed. */
-#define PNG_sRGB_INTENT_PERCEPTUAL 0
-#define PNG_sRGB_INTENT_RELATIVE 1
-#define PNG_sRGB_INTENT_SATURATION 2
-#define PNG_sRGB_INTENT_ABSOLUTE 3
-#define PNG_sRGB_INTENT_LAST 4 /* Not a valid value */
-
-/* This is for text chunks */
-#define PNG_KEYWORD_MAX_LENGTH 79
-
-/* Maximum number of entries in PLTE/sPLT/tRNS arrays */
-#define PNG_MAX_PALETTE_LENGTH 256
-
-/* These determine if an ancillary chunk's data has been successfully read
- * from the PNG header, or if the application has filled in the corresponding
- * data in the info_struct to be written into the output file. The values
- * of the PNG_INFO_<chunk> defines should NOT be changed.
- */
-#define PNG_INFO_gAMA 0x0001
-#define PNG_INFO_sBIT 0x0002
-#define PNG_INFO_cHRM 0x0004
-#define PNG_INFO_PLTE 0x0008
-#define PNG_INFO_tRNS 0x0010
-#define PNG_INFO_bKGD 0x0020
-#define PNG_INFO_hIST 0x0040
-#define PNG_INFO_pHYs 0x0080
-#define PNG_INFO_oFFs 0x0100
-#define PNG_INFO_tIME 0x0200
-#define PNG_INFO_pCAL 0x0400
-#define PNG_INFO_sRGB 0x0800 /* GR-P, 0.96a */
-#define PNG_INFO_iCCP 0x1000 /* ESR, 1.0.6 */
-#define PNG_INFO_sPLT 0x2000 /* ESR, 1.0.6 */
-#define PNG_INFO_sCAL 0x4000 /* ESR, 1.0.6 */
-#define PNG_INFO_IDAT 0x8000 /* ESR, 1.0.6 */
-
-/* This is used for the transformation routines, as some of them
- * change these values for the row. It also should enable using
- * the routines for other purposes.
- */
-typedef struct png_row_info_struct
-{
- png_uint_32 width; /* width of row */
- png_size_t rowbytes; /* number of bytes in row */
- png_byte color_type; /* color type of row */
- png_byte bit_depth; /* bit depth of row */
- png_byte channels; /* number of channels (1, 2, 3, or 4) */
- png_byte pixel_depth; /* bits per pixel (depth * channels) */
-} png_row_info;
-
-typedef png_row_info * png_row_infop;
-typedef png_row_info * * png_row_infopp;
-
-/* These are the function types for the I/O functions and for the functions
- * that allow the user to override the default I/O functions with his or her
- * own. The png_error_ptr type should match that of user-supplied warning
- * and error functions, while the png_rw_ptr type should match that of the
- * user read/write data functions. Note that the 'write' function must not
- * modify the buffer it is passed. The 'read' function, on the other hand, is
- * expected to return the read data in the buffer.
- */
-typedef PNG_CALLBACK(void, *png_error_ptr, (png_structp, png_const_charp));
-typedef PNG_CALLBACK(void, *png_rw_ptr, (png_structp, png_bytep, png_size_t));
-typedef PNG_CALLBACK(void, *png_flush_ptr, (png_structp));
-typedef PNG_CALLBACK(void, *png_read_status_ptr, (png_structp, png_uint_32,
- int));
-typedef PNG_CALLBACK(void, *png_write_status_ptr, (png_structp, png_uint_32,
- int));
-
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-typedef PNG_CALLBACK(void, *png_progressive_info_ptr, (png_structp, png_infop));
-typedef PNG_CALLBACK(void, *png_progressive_end_ptr, (png_structp, png_infop));
-
-/* The following callback receives png_uint_32 row_number, int pass for the
- * png_bytep data of the row. When transforming an interlaced image the
- * row number is the row number within the sub-image of the interlace pass, so
- * the value will increase to the height of the sub-image (not the full image)
- * then reset to 0 for the next pass.
- *
- * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
- * find the output pixel (x,y) given an interlaced sub-image pixel
- * (row,col,pass). (See below for these macros.)
- */
-typedef PNG_CALLBACK(void, *png_progressive_row_ptr, (png_structp, png_bytep,
- png_uint_32, int));
-#endif
-
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-typedef PNG_CALLBACK(void, *png_user_transform_ptr, (png_structp, png_row_infop,
- png_bytep));
-#endif
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
-typedef PNG_CALLBACK(int, *png_user_chunk_ptr, (png_structp,
- png_unknown_chunkp));
-#endif
-#ifdef PNG_UNKNOWN_CHUNKS_SUPPORTED
-/* not used anywhere */
-/* typedef PNG_CALLBACK(void, *png_unknown_chunk_ptr, (png_structp)); */
-#endif
-
-#ifdef PNG_SETJMP_SUPPORTED
-/* This must match the function definition in <setjmp.h>, and the application
- * must include this before png.h to obtain the definition of jmp_buf. The
- * function is required to be PNG_NORETURN, but this is not checked. If the
- * function does return the application will crash via an abort() or similar
- * system level call.
- *
- * If you get a warning here while building the library you may need to make
- * changes to ensure that pnglibconf.h records the calling convention used by
- * your compiler. This may be very difficult - try using a different compiler
- * to build the library!
- */
-PNG_FUNCTION(void, (PNGCAPI *png_longjmp_ptr), PNGARG((jmp_buf, int)), typedef);
-#endif
-
-/* Transform masks for the high-level interface */
-#define PNG_TRANSFORM_IDENTITY 0x0000 /* read and write */
-#define PNG_TRANSFORM_STRIP_16 0x0001 /* read only */
-#define PNG_TRANSFORM_STRIP_ALPHA 0x0002 /* read only */
-#define PNG_TRANSFORM_PACKING 0x0004 /* read and write */
-#define PNG_TRANSFORM_PACKSWAP 0x0008 /* read and write */
-#define PNG_TRANSFORM_EXPAND 0x0010 /* read only */
-#define PNG_TRANSFORM_INVERT_MONO 0x0020 /* read and write */
-#define PNG_TRANSFORM_SHIFT 0x0040 /* read and write */
-#define PNG_TRANSFORM_BGR 0x0080 /* read and write */
-#define PNG_TRANSFORM_SWAP_ALPHA 0x0100 /* read and write */
-#define PNG_TRANSFORM_SWAP_ENDIAN 0x0200 /* read and write */
-#define PNG_TRANSFORM_INVERT_ALPHA 0x0400 /* read and write */
-#define PNG_TRANSFORM_STRIP_FILLER 0x0800 /* write only */
-/* Added to libpng-1.2.34 */
-#define PNG_TRANSFORM_STRIP_FILLER_BEFORE PNG_TRANSFORM_STRIP_FILLER
-#define PNG_TRANSFORM_STRIP_FILLER_AFTER 0x1000 /* write only */
-/* Added to libpng-1.4.0 */
-#define PNG_TRANSFORM_GRAY_TO_RGB 0x2000 /* read only */
-/* Added to libpng-1.5.4 */
-#define PNG_TRANSFORM_EXPAND_16 0x4000 /* read only */
-#define PNG_TRANSFORM_SCALE_16 0x8000 /* read only */
-
-/* Flags for MNG supported features */
-#define PNG_FLAG_MNG_EMPTY_PLTE 0x01
-#define PNG_FLAG_MNG_FILTER_64 0x04
-#define PNG_ALL_MNG_FEATURES 0x05
-
-/* NOTE: prior to 1.5 these functions had no 'API' style declaration,
- * this allowed the zlib default functions to be used on Windows
- * platforms. In 1.5 the zlib default malloc (which just calls malloc and
- * ignores the first argument) should be completely compatible with the
- * following.
- */
-typedef PNG_CALLBACK(png_voidp, *png_malloc_ptr, (png_structp,
- png_alloc_size_t));
-typedef PNG_CALLBACK(void, *png_free_ptr, (png_structp, png_voidp));
-
-/* Section 3: exported functions
- * Here are the function definitions most commonly used. This is not
- * the place to find out how to use libpng. See libpng-manual.txt for the
- * full explanation, see example.c for the summary. This just provides
- * a simple one line description of the use of each function.
- *
- * The PNG_EXPORT() and PNG_EXPORTA() macros used below are defined in
- * pngconf.h and in the *.dfn files in the scripts directory.
- *
- * PNG_EXPORT(ordinal, type, name, (args));
- *
- * ordinal: ordinal that is used while building
- * *.def files. The ordinal value is only
- * relevant when preprocessing png.h with
- * the *.dfn files for building symbol table
- * entries, and are removed by pngconf.h.
- * type: return type of the function
- * name: function name
- * args: function arguments, with types
- *
- * When we wish to append attributes to a function prototype we use
- * the PNG_EXPORTA() macro instead.
- *
- * PNG_EXPORTA(ordinal, type, name, (args), attributes);
- *
- * ordinal, type, name, and args: same as in PNG_EXPORT().
- * attributes: function attributes
- */
-
-/* Returns the version number of the library */
-PNG_EXPORT(1, png_uint_32, png_access_version_number, (void));
-
-/* Tell lib we have already handled the first <num_bytes> magic bytes.
- * Handling more than 8 bytes from the beginning of the file is an error.
- */
-PNG_EXPORT(2, void, png_set_sig_bytes, (png_structrp png_ptr, int num_bytes));
-
-/* Check sig[start] through sig[start + num_to_check - 1] to see if it's a
- * PNG file. Returns zero if the supplied bytes match the 8-byte PNG
- * signature, and non-zero otherwise. Having num_to_check == 0 or
- * start > 7 will always fail (ie return non-zero).
- */
-PNG_EXPORT(3, int, png_sig_cmp, (png_const_bytep sig, png_size_t start,
- png_size_t num_to_check));
-
-/* Simple signature checking function. This is the same as calling
- * png_check_sig(sig, n) := !png_sig_cmp(sig, 0, n).
- */
-#define png_check_sig(sig, n) !png_sig_cmp((sig), 0, (n))
-
-/* Allocate and initialize png_ptr struct for reading, and any other memory. */
-PNG_EXPORTA(4, png_structp, png_create_read_struct,
- (png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn),
- PNG_ALLOCATED);
-
-/* Allocate and initialize png_ptr struct for writing, and any other memory */
-PNG_EXPORTA(5, png_structp, png_create_write_struct,
- (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
- png_error_ptr warn_fn),
- PNG_ALLOCATED);
-
-PNG_EXPORT(6, png_size_t, png_get_compression_buffer_size,
- (png_const_structrp png_ptr));
-
-PNG_EXPORT(7, void, png_set_compression_buffer_size, (png_structrp png_ptr,
- png_size_t size));
-
-/* Moved from pngconf.h in 1.4.0 and modified to ensure setjmp/longjmp
- * match up.
- */
-#ifdef PNG_SETJMP_SUPPORTED
-/* This function returns the jmp_buf built in to *png_ptr. It must be
- * supplied with an appropriate 'longjmp' function to use on that jmp_buf
- * unless the default error function is overridden in which case NULL is
- * acceptable. The size of the jmp_buf is checked against the actual size
- * allocated by the library - the call will return NULL on a mismatch
- * indicating an ABI mismatch.
- */
-PNG_EXPORT(8, jmp_buf*, png_set_longjmp_fn, (png_structrp png_ptr,
- png_longjmp_ptr longjmp_fn, size_t jmp_buf_size));
-# define png_jmpbuf(png_ptr) \
- (*png_set_longjmp_fn((png_ptr), longjmp, (sizeof (jmp_buf))))
-#else
-# define png_jmpbuf(png_ptr) \
- (LIBPNG_WAS_COMPILED_WITH__PNG_NO_SETJMP)
-#endif
-/* This function should be used by libpng applications in place of
- * longjmp(png_ptr->jmpbuf, val). If longjmp_fn() has been set, it
- * will use it; otherwise it will call PNG_ABORT(). This function was
- * added in libpng-1.5.0.
- */
-PNG_EXPORTA(9, void, png_longjmp, (png_const_structrp png_ptr, int val),
- PNG_NORETURN);
-
-#ifdef PNG_READ_SUPPORTED
-/* Reset the compression stream */
-PNG_EXPORTA(10, int, png_reset_zstream, (png_structrp png_ptr), PNG_DEPRECATED);
-#endif
-
-/* New functions added in libpng-1.0.2 (not enabled by default until 1.2.0) */
-#ifdef PNG_USER_MEM_SUPPORTED
-PNG_EXPORTA(11, png_structp, png_create_read_struct_2,
- (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
- png_error_ptr warn_fn,
- png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn),
- PNG_ALLOCATED);
-PNG_EXPORTA(12, png_structp, png_create_write_struct_2,
- (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
- png_error_ptr warn_fn,
- png_voidp mem_ptr, png_malloc_ptr malloc_fn, png_free_ptr free_fn),
- PNG_ALLOCATED);
-#endif
-
-/* Write the PNG file signature. */
-PNG_EXPORT(13, void, png_write_sig, (png_structrp png_ptr));
-
-/* Write a PNG chunk - size, type, (optional) data, CRC. */
-PNG_EXPORT(14, void, png_write_chunk, (png_structrp png_ptr, png_const_bytep
- chunk_name, png_const_bytep data, png_size_t length));
-
-/* Write the start of a PNG chunk - length and chunk name. */
-PNG_EXPORT(15, void, png_write_chunk_start, (png_structrp png_ptr,
- png_const_bytep chunk_name, png_uint_32 length));
-
-/* Write the data of a PNG chunk started with png_write_chunk_start(). */
-PNG_EXPORT(16, void, png_write_chunk_data, (png_structrp png_ptr,
- png_const_bytep data, png_size_t length));
-
-/* Finish a chunk started with png_write_chunk_start() (includes CRC). */
-PNG_EXPORT(17, void, png_write_chunk_end, (png_structrp png_ptr));
-
-/* Allocate and initialize the info structure */
-PNG_EXPORTA(18, png_infop, png_create_info_struct, (png_const_structrp png_ptr),
- PNG_ALLOCATED);
-
-/* DEPRECATED: this function allowed init structures to be created using the
- * default allocation method (typically malloc). Use is deprecated in 1.6.0 and
- * the API will be removed in the future.
- */
-PNG_EXPORTA(19, void, png_info_init_3, (png_infopp info_ptr,
- png_size_t png_info_struct_size), PNG_DEPRECATED);
-
-/* Writes all the PNG information before the image. */
-PNG_EXPORT(20, void, png_write_info_before_PLTE,
- (png_structrp png_ptr, png_const_inforp info_ptr));
-PNG_EXPORT(21, void, png_write_info,
- (png_structrp png_ptr, png_const_inforp info_ptr));
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read the information before the actual image data. */
-PNG_EXPORT(22, void, png_read_info,
- (png_structrp png_ptr, png_inforp info_ptr));
-#endif
-
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- /* Convert to a US string format: there is no localization support in this
- * routine. The original implementation used a 29 character buffer in
- * png_struct, this will be removed in future versions.
- */
-#if PNG_LIBPNG_VER < 10700
-/* To do: remove this from libpng17 (and from libpng17/png.c and pngstruct.h) */
-PNG_EXPORTA(23, png_const_charp, png_convert_to_rfc1123, (png_structrp png_ptr,
- png_const_timep ptime),PNG_DEPRECATED);
-#endif
-PNG_EXPORT(241, int, png_convert_to_rfc1123_buffer, (char out[29],
- png_const_timep ptime));
-#endif
-
-#ifdef PNG_CONVERT_tIME_SUPPORTED
-/* Convert from a struct tm to png_time */
-PNG_EXPORT(24, void, png_convert_from_struct_tm, (png_timep ptime,
- const struct tm * ttime));
-
-/* Convert from time_t to png_time. Uses gmtime() */
-PNG_EXPORT(25, void, png_convert_from_time_t, (png_timep ptime, time_t ttime));
-#endif /* PNG_CONVERT_tIME_SUPPORTED */
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
-/* Expand data to 24-bit RGB, or 8-bit grayscale, with alpha if available. */
-PNG_EXPORT(26, void, png_set_expand, (png_structrp png_ptr));
-PNG_EXPORT(27, void, png_set_expand_gray_1_2_4_to_8, (png_structrp png_ptr));
-PNG_EXPORT(28, void, png_set_palette_to_rgb, (png_structrp png_ptr));
-PNG_EXPORT(29, void, png_set_tRNS_to_alpha, (png_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
-/* Expand to 16-bit channels, forces conversion of palette to RGB and expansion
- * of a tRNS chunk if present.
- */
-PNG_EXPORT(221, void, png_set_expand_16, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Use blue, green, red order for pixels. */
-PNG_EXPORT(30, void, png_set_bgr, (png_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-/* Expand the grayscale to 24-bit RGB if necessary. */
-PNG_EXPORT(31, void, png_set_gray_to_rgb, (png_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-/* Reduce RGB to grayscale. */
-#define PNG_ERROR_ACTION_NONE 1
-#define PNG_ERROR_ACTION_WARN 2
-#define PNG_ERROR_ACTION_ERROR 3
-#define PNG_RGB_TO_GRAY_DEFAULT (-1)/*for red/green coefficients*/
-
-PNG_FP_EXPORT(32, void, png_set_rgb_to_gray, (png_structrp png_ptr,
- int error_action, double red, double green))
-PNG_FIXED_EXPORT(33, void, png_set_rgb_to_gray_fixed, (png_structrp png_ptr,
- int error_action, png_fixed_point red, png_fixed_point green))
-
-PNG_EXPORT(34, png_byte, png_get_rgb_to_gray_status, (png_const_structrp
- png_ptr));
-#endif
-
-#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
-PNG_EXPORT(35, void, png_build_grayscale_palette, (int bit_depth,
- png_colorp palette));
-#endif
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
-/* How the alpha channel is interpreted - this affects how the color channels of
- * a PNG file are returned when an alpha channel, or tRNS chunk in a palette
- * file, is present.
- *
- * This has no effect on the way pixels are written into a PNG output
- * datastream. The color samples in a PNG datastream are never premultiplied
- * with the alpha samples.
- *
- * The default is to return data according to the PNG specification: the alpha
- * channel is a linear measure of the contribution of the pixel to the
- * corresponding composited pixel. The gamma encoded color channels must be
- * scaled according to the contribution and to do this it is necessary to undo
- * the encoding, scale the color values, perform the composition and reencode
- * the values. This is the 'PNG' mode.
- *
- * The alternative is to 'associate' the alpha with the color information by
- * storing color channel values that have been scaled by the alpha. The
- * advantage is that the color channels can be resampled (the image can be
- * scaled) in this form. The disadvantage is that normal practice is to store
- * linear, not (gamma) encoded, values and this requires 16-bit channels for
- * still images rather than the 8-bit channels that are just about sufficient if
- * gamma encoding is used. In addition all non-transparent pixel values,
- * including completely opaque ones, must be gamma encoded to produce the final
- * image. This is the 'STANDARD', 'ASSOCIATED' or 'PREMULTIPLIED' mode (the
- * latter being the two common names for associated alpha color channels.)
- *
- * Since it is not necessary to perform arithmetic on opaque color values so
- * long as they are not to be resampled and are in the final color space it is
- * possible to optimize the handling of alpha by storing the opaque pixels in
- * the PNG format (adjusted for the output color space) while storing partially
- * opaque pixels in the standard, linear, format. The accuracy required for
- * standard alpha composition is relatively low, because the pixels are
- * isolated, therefore typically the accuracy loss in storing 8-bit linear
- * values is acceptable. (This is not true if the alpha channel is used to
- * simulate transparency over large areas - use 16 bits or the PNG mode in
- * this case!) This is the 'OPTIMIZED' mode. For this mode a pixel is
- * treated as opaque only if the alpha value is equal to the maximum value.
- *
- * The final choice is to gamma encode the alpha channel as well. This is
- * broken because, in practice, no implementation that uses this choice
- * correctly undoes the encoding before handling alpha composition. Use this
- * choice only if other serious errors in the software or hardware you use
- * mandate it; the typical serious error is for dark halos to appear around
- * opaque areas of the composited PNG image because of arithmetic overflow.
- *
- * The API function png_set_alpha_mode specifies which of these choices to use
- * with an enumerated 'mode' value and the gamma of the required output:
- */
-#define PNG_ALPHA_PNG 0 /* according to the PNG standard */
-#define PNG_ALPHA_STANDARD 1 /* according to Porter/Duff */
-#define PNG_ALPHA_ASSOCIATED 1 /* as above; this is the normal practice */
-#define PNG_ALPHA_PREMULTIPLIED 1 /* as above */
-#define PNG_ALPHA_OPTIMIZED 2 /* 'PNG' for opaque pixels, else 'STANDARD' */
-#define PNG_ALPHA_BROKEN 3 /* the alpha channel is gamma encoded */
-
-PNG_FP_EXPORT(227, void, png_set_alpha_mode, (png_structrp png_ptr, int mode,
- double output_gamma))
-PNG_FIXED_EXPORT(228, void, png_set_alpha_mode_fixed, (png_structrp png_ptr,
- int mode, png_fixed_point output_gamma))
-#endif
-
-#if defined(PNG_GAMMA_SUPPORTED) || defined(PNG_READ_ALPHA_MODE_SUPPORTED)
-/* The output_gamma value is a screen gamma in libpng terminology: it expresses
- * how to decode the output values, not how they are encoded. The values used
- * correspond to the normal numbers used to describe the overall gamma of a
- * computer display system; for example 2.2 for an sRGB conformant system. The
- * values are scaled by 100000 in the _fixed version of the API (so 220000 for
- * sRGB.)
- *
- * The inverse of the value is always used to provide a default for the PNG file
- * encoding if it has no gAMA chunk and if png_set_gamma() has not been called
- * to override the PNG gamma information.
- *
- * When the ALPHA_OPTIMIZED mode is selected the output gamma is used to encode
- * opaque pixels however pixels with lower alpha values are not encoded,
- * regardless of the output gamma setting.
- *
- * When the standard Porter Duff handling is requested with mode 1 the output
- * encoding is set to be linear and the output_gamma value is only relevant
- * as a default for input data that has no gamma information. The linear output
- * encoding will be overridden if png_set_gamma() is called - the results may be
- * highly unexpected!
- *
- * The following numbers are derived from the sRGB standard and the research
- * behind it. sRGB is defined to be approximated by a PNG gAMA chunk value of
- * 0.45455 (1/2.2) for PNG. The value implicitly includes any viewing
- * correction required to take account of any differences in the color
- * environment of the original scene and the intended display environment; the
- * value expresses how to *decode* the image for display, not how the original
- * data was *encoded*.
- *
- * sRGB provides a peg for the PNG standard by defining a viewing environment.
- * sRGB itself, and earlier TV standards, actually use a more complex transform
- * (a linear portion then a gamma 2.4 power law) than PNG can express. (PNG is
- * limited to simple power laws.) By saying that an image for direct display on
- * an sRGB conformant system should be stored with a gAMA chunk value of 45455
- * (11.3.3.2 and 11.3.3.5 of the ISO PNG specification) the PNG specification
- * makes it possible to derive values for other display systems and
- * environments.
- *
- * The Mac value is deduced from the sRGB based on an assumption that the actual
- * extra viewing correction used in early Mac display systems was implemented as
- * a power 1.45 lookup table.
- *
- * Any system where a programmable lookup table is used or where the behavior of
- * the final display device characteristics can be changed requires system
- * specific code to obtain the current characteristic. However this can be
- * difficult and most PNG gamma correction only requires an approximate value.
- *
- * By default, if png_set_alpha_mode() is not called, libpng assumes that all
- * values are unencoded, linear, values and that the output device also has a
- * linear characteristic. This is only very rarely correct - it is invariably
- * better to call png_set_alpha_mode() with PNG_DEFAULT_sRGB than rely on the
- * default if you don't know what the right answer is!
- *
- * The special value PNG_GAMMA_MAC_18 indicates an older Mac system (pre Mac OS
- * 10.6) which used a correction table to implement a somewhat lower gamma on an
- * otherwise sRGB system.
- *
- * Both these values are reserved (not simple gamma values) in order to allow
- * more precise correction internally in the future.
- *
- * NOTE: the following values can be passed to either the fixed or floating
- * point APIs, but the floating point API will also accept floating point
- * values.
- */
-#define PNG_DEFAULT_sRGB -1 /* sRGB gamma and color space */
-#define PNG_GAMMA_MAC_18 -2 /* Old Mac '1.8' gamma and color space */
-#define PNG_GAMMA_sRGB 220000 /* Television standards--matches sRGB gamma */
-#define PNG_GAMMA_LINEAR PNG_FP_1 /* Linear */
-#endif
-
-/* The following are examples of calls to png_set_alpha_mode to achieve the
- * required overall gamma correction and, where necessary, alpha
- * premultiplication.
- *
- * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
- * This is the default libpng handling of the alpha channel - it is not
- * pre-multiplied into the color components. In addition the call states
- * that the output is for a sRGB system and causes all PNG files without gAMA
- * chunks to be assumed to be encoded using sRGB.
- *
- * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
- * In this case the output is assumed to be something like an sRGB conformant
- * display preceeded by a power-law lookup table of power 1.45. This is how
- * early Mac systems behaved.
- *
- * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_GAMMA_LINEAR);
- * This is the classic Jim Blinn approach and will work in academic
- * environments where everything is done by the book. It has the shortcoming
- * of assuming that input PNG data with no gamma information is linear - this
- * is unlikely to be correct unless the PNG files where generated locally.
- * Most of the time the output precision will be so low as to show
- * significant banding in dark areas of the image.
- *
- * png_set_expand_16(pp);
- * png_set_alpha_mode(pp, PNG_ALPHA_STANDARD, PNG_DEFAULT_sRGB);
- * This is a somewhat more realistic Jim Blinn inspired approach. PNG files
- * are assumed to have the sRGB encoding if not marked with a gamma value and
- * the output is always 16 bits per component. This permits accurate scaling
- * and processing of the data. If you know that your input PNG files were
- * generated locally you might need to replace PNG_DEFAULT_sRGB with the
- * correct value for your system.
- *
- * png_set_alpha_mode(pp, PNG_ALPHA_OPTIMIZED, PNG_DEFAULT_sRGB);
- * If you just need to composite the PNG image onto an existing background
- * and if you control the code that does this you can use the optimization
- * setting. In this case you just copy completely opaque pixels to the
- * output. For pixels that are not completely transparent (you just skip
- * those) you do the composition math using png_composite or png_composite_16
- * below then encode the resultant 8-bit or 16-bit values to match the output
- * encoding.
- *
- * Other cases
- * If neither the PNG nor the standard linear encoding work for you because
- * of the software or hardware you use then you have a big problem. The PNG
- * case will probably result in halos around the image. The linear encoding
- * will probably result in a washed out, too bright, image (it's actually too
- * contrasty.) Try the ALPHA_OPTIMIZED mode above - this will probably
- * substantially reduce the halos. Alternatively try:
- *
- * png_set_alpha_mode(pp, PNG_ALPHA_BROKEN, PNG_DEFAULT_sRGB);
- * This option will also reduce the halos, but there will be slight dark
- * halos round the opaque parts of the image where the background is light.
- * In the OPTIMIZED mode the halos will be light halos where the background
- * is dark. Take your pick - the halos are unavoidable unless you can get
- * your hardware/software fixed! (The OPTIMIZED approach is slightly
- * faster.)
- *
- * When the default gamma of PNG files doesn't match the output gamma.
- * If you have PNG files with no gamma information png_set_alpha_mode allows
- * you to provide a default gamma, but it also sets the ouput gamma to the
- * matching value. If you know your PNG files have a gamma that doesn't
- * match the output you can take advantage of the fact that
- * png_set_alpha_mode always sets the output gamma but only sets the PNG
- * default if it is not already set:
- *
- * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_DEFAULT_sRGB);
- * png_set_alpha_mode(pp, PNG_ALPHA_PNG, PNG_GAMMA_MAC);
- * The first call sets both the default and the output gamma values, the
- * second call overrides the output gamma without changing the default. This
- * is easier than achieving the same effect with png_set_gamma. You must use
- * PNG_ALPHA_PNG for the first call - internal checking in png_set_alpha will
- * fire if more than one call to png_set_alpha_mode and png_set_background is
- * made in the same read operation, however multiple calls with PNG_ALPHA_PNG
- * are ignored.
- */
-
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
-PNG_EXPORT(36, void, png_set_strip_alpha, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
- defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
-PNG_EXPORT(37, void, png_set_swap_alpha, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
- defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-PNG_EXPORT(38, void, png_set_invert_alpha, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
-/* Add a filler byte to 8-bit Gray or 24-bit RGB images. */
-PNG_EXPORT(39, void, png_set_filler, (png_structrp png_ptr, png_uint_32 filler,
- int flags));
-/* The values of the PNG_FILLER_ defines should NOT be changed */
-# define PNG_FILLER_BEFORE 0
-# define PNG_FILLER_AFTER 1
-/* Add an alpha byte to 8-bit Gray or 24-bit RGB images. */
-PNG_EXPORT(40, void, png_set_add_alpha, (png_structrp png_ptr,
- png_uint_32 filler, int flags));
-#endif /* PNG_READ_FILLER_SUPPORTED || PNG_WRITE_FILLER_SUPPORTED */
-
-#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Swap bytes in 16-bit depth files. */
-PNG_EXPORT(41, void, png_set_swap, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
-/* Use 1 byte per pixel in 1, 2, or 4-bit depth files. */
-PNG_EXPORT(42, void, png_set_packing, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
- defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-/* Swap packing order of pixels in bytes. */
-PNG_EXPORT(43, void, png_set_packswap, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
-/* Converts files to legal bit depths. */
-PNG_EXPORT(44, void, png_set_shift, (png_structrp png_ptr, png_const_color_8p
- true_bits));
-#endif
-
-#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
- defined(PNG_WRITE_INTERLACING_SUPPORTED)
-/* Have the code handle the interlacing. Returns the number of passes.
- * MUST be called before png_read_update_info or png_start_read_image,
- * otherwise it will not have the desired effect. Note that it is still
- * necessary to call png_read_row or png_read_rows png_get_image_height
- * times for each pass.
-*/
-PNG_EXPORT(45, int, png_set_interlace_handling, (png_structrp png_ptr));
-#endif
-
-#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
-/* Invert monochrome files */
-PNG_EXPORT(46, void, png_set_invert_mono, (png_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-/* Handle alpha and tRNS by replacing with a background color. Prior to
- * libpng-1.5.4 this API must not be called before the PNG file header has been
- * read. Doing so will result in unexpected behavior and possible warnings or
- * errors if the PNG file contains a bKGD chunk.
- */
-PNG_FP_EXPORT(47, void, png_set_background, (png_structrp png_ptr,
- png_const_color_16p background_color, int background_gamma_code,
- int need_expand, double background_gamma))
-PNG_FIXED_EXPORT(215, void, png_set_background_fixed, (png_structrp png_ptr,
- png_const_color_16p background_color, int background_gamma_code,
- int need_expand, png_fixed_point background_gamma))
-#endif
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-# define PNG_BACKGROUND_GAMMA_UNKNOWN 0
-# define PNG_BACKGROUND_GAMMA_SCREEN 1
-# define PNG_BACKGROUND_GAMMA_FILE 2
-# define PNG_BACKGROUND_GAMMA_UNIQUE 3
-#endif
-
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
-/* Scale a 16-bit depth file down to 8-bit, accurately. */
-PNG_EXPORT(229, void, png_set_scale_16, (png_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
-#define PNG_READ_16_TO_8 SUPPORTED /* Name prior to 1.5.4 */
-/* Strip the second byte of information from a 16-bit depth file. */
-PNG_EXPORT(48, void, png_set_strip_16, (png_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* Turn on quantizing, and reduce the palette to the number of colors
- * available.
- */
-PNG_EXPORT(49, void, png_set_quantize, (png_structrp png_ptr,
- png_colorp palette, int num_palette, int maximum_colors,
- png_const_uint_16p histogram, int full_quantize));
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-/* The threshold on gamma processing is configurable but hard-wired into the
- * library. The following is the floating point variant.
- */
-#define PNG_GAMMA_THRESHOLD (PNG_GAMMA_THRESHOLD_FIXED*.00001)
-
-/* Handle gamma correction. Screen_gamma=(display_exponent).
- * NOTE: this API simply sets the screen and file gamma values. It will
- * therefore override the value for gamma in a PNG file if it is called after
- * the file header has been read - use with care - call before reading the PNG
- * file for best results!
- *
- * These routines accept the same gamma values as png_set_alpha_mode (described
- * above). The PNG_GAMMA_ defines and PNG_DEFAULT_sRGB can be passed to either
- * API (floating point or fixed.) Notice, however, that the 'file_gamma' value
- * is the inverse of a 'screen gamma' value.
- */
-PNG_FP_EXPORT(50, void, png_set_gamma, (png_structrp png_ptr,
- double screen_gamma, double override_file_gamma))
-PNG_FIXED_EXPORT(208, void, png_set_gamma_fixed, (png_structrp png_ptr,
- png_fixed_point screen_gamma, png_fixed_point override_file_gamma))
-#endif
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-/* Set how many lines between output flushes - 0 for no flushing */
-PNG_EXPORT(51, void, png_set_flush, (png_structrp png_ptr, int nrows));
-/* Flush the current PNG output buffer */
-PNG_EXPORT(52, void, png_write_flush, (png_structrp png_ptr));
-#endif
-
-/* Optional update palette with requested transformations */
-PNG_EXPORT(53, void, png_start_read_image, (png_structrp png_ptr));
-
-/* Optional call to update the users info structure */
-PNG_EXPORT(54, void, png_read_update_info, (png_structrp png_ptr,
- png_inforp info_ptr));
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read one or more rows of image data. */
-PNG_EXPORT(55, void, png_read_rows, (png_structrp png_ptr, png_bytepp row,
- png_bytepp display_row, png_uint_32 num_rows));
-#endif
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read a row of data. */
-PNG_EXPORT(56, void, png_read_row, (png_structrp png_ptr, png_bytep row,
- png_bytep display_row));
-#endif
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read the whole image into memory at once. */
-PNG_EXPORT(57, void, png_read_image, (png_structrp png_ptr, png_bytepp image));
-#endif
-
-/* Write a row of image data */
-PNG_EXPORT(58, void, png_write_row, (png_structrp png_ptr,
- png_const_bytep row));
-
-/* Write a few rows of image data: (*row) is not written; however, the type
- * is declared as writeable to maintain compatibility with previous versions
- * of libpng and to allow the 'display_row' array from read_rows to be passed
- * unchanged to write_rows.
- */
-PNG_EXPORT(59, void, png_write_rows, (png_structrp png_ptr, png_bytepp row,
- png_uint_32 num_rows));
-
-/* Write the image data */
-PNG_EXPORT(60, void, png_write_image, (png_structrp png_ptr, png_bytepp image));
-
-/* Write the end of the PNG file. */
-PNG_EXPORT(61, void, png_write_end, (png_structrp png_ptr,
- png_inforp info_ptr));
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read the end of the PNG file. */
-PNG_EXPORT(62, void, png_read_end, (png_structrp png_ptr, png_inforp info_ptr));
-#endif
-
-/* Free any memory associated with the png_info_struct */
-PNG_EXPORT(63, void, png_destroy_info_struct, (png_const_structrp png_ptr,
- png_infopp info_ptr_ptr));
-
-/* Free any memory associated with the png_struct and the png_info_structs */
-PNG_EXPORT(64, void, png_destroy_read_struct, (png_structpp png_ptr_ptr,
- png_infopp info_ptr_ptr, png_infopp end_info_ptr_ptr));
-
-/* Free any memory associated with the png_struct and the png_info_structs */
-PNG_EXPORT(65, void, png_destroy_write_struct, (png_structpp png_ptr_ptr,
- png_infopp info_ptr_ptr));
-
-/* Set the libpng method of handling chunk CRC errors */
-PNG_EXPORT(66, void, png_set_crc_action, (png_structrp png_ptr, int crit_action,
- int ancil_action));
-
-/* Values for png_set_crc_action() say how to handle CRC errors in
- * ancillary and critical chunks, and whether to use the data contained
- * therein. Note that it is impossible to "discard" data in a critical
- * chunk. For versions prior to 0.90, the action was always error/quit,
- * whereas in version 0.90 and later, the action for CRC errors in ancillary
- * chunks is warn/discard. These values should NOT be changed.
- *
- * value action:critical action:ancillary
- */
-#define PNG_CRC_DEFAULT 0 /* error/quit warn/discard data */
-#define PNG_CRC_ERROR_QUIT 1 /* error/quit error/quit */
-#define PNG_CRC_WARN_DISCARD 2 /* (INVALID) warn/discard data */
-#define PNG_CRC_WARN_USE 3 /* warn/use data warn/use data */
-#define PNG_CRC_QUIET_USE 4 /* quiet/use data quiet/use data */
-#define PNG_CRC_NO_CHANGE 5 /* use current value use current value */
-
-/* These functions give the user control over the scan-line filtering in
- * libpng and the compression methods used by zlib. These functions are
- * mainly useful for testing, as the defaults should work with most users.
- * Those users who are tight on memory or want faster performance at the
- * expense of compression can modify them. See the compression library
- * header file (zlib.h) for an explination of the compression functions.
- */
-
-/* Set the filtering method(s) used by libpng. Currently, the only valid
- * value for "method" is 0.
- */
-PNG_EXPORT(67, void, png_set_filter, (png_structrp png_ptr, int method,
- int filters));
-
-/* Flags for png_set_filter() to say which filters to use. The flags
- * are chosen so that they don't conflict with real filter types
- * below, in case they are supplied instead of the #defined constants.
- * These values should NOT be changed.
- */
-#define PNG_NO_FILTERS 0x00
-#define PNG_FILTER_NONE 0x08
-#define PNG_FILTER_SUB 0x10
-#define PNG_FILTER_UP 0x20
-#define PNG_FILTER_AVG 0x40
-#define PNG_FILTER_PAETH 0x80
-#define PNG_ALL_FILTERS (PNG_FILTER_NONE | PNG_FILTER_SUB | PNG_FILTER_UP | \
- PNG_FILTER_AVG | PNG_FILTER_PAETH)
-
-/* Filter values (not flags) - used in pngwrite.c, pngwutil.c for now.
- * These defines should NOT be changed.
- */
-#define PNG_FILTER_VALUE_NONE 0
-#define PNG_FILTER_VALUE_SUB 1
-#define PNG_FILTER_VALUE_UP 2
-#define PNG_FILTER_VALUE_AVG 3
-#define PNG_FILTER_VALUE_PAETH 4
-#define PNG_FILTER_VALUE_LAST 5
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* EXPERIMENTAL */
-/* The "heuristic_method" is given by one of the PNG_FILTER_HEURISTIC_
- * defines, either the default (minimum-sum-of-absolute-differences), or
- * the experimental method (weighted-minimum-sum-of-absolute-differences).
- *
- * Weights are factors >= 1.0, indicating how important it is to keep the
- * filter type consistent between rows. Larger numbers mean the current
- * filter is that many times as likely to be the same as the "num_weights"
- * previous filters. This is cumulative for each previous row with a weight.
- * There needs to be "num_weights" values in "filter_weights", or it can be
- * NULL if the weights aren't being specified. Weights have no influence on
- * the selection of the first row filter. Well chosen weights can (in theory)
- * improve the compression for a given image.
- *
- * Costs are factors >= 1.0 indicating the relative decoding costs of a
- * filter type. Higher costs indicate more decoding expense, and are
- * therefore less likely to be selected over a filter with lower computational
- * costs. There needs to be a value in "filter_costs" for each valid filter
- * type (given by PNG_FILTER_VALUE_LAST), or it can be NULL if you aren't
- * setting the costs. Costs try to improve the speed of decompression without
- * unduly increasing the compressed image size.
- *
- * A negative weight or cost indicates the default value is to be used, and
- * values in the range [0.0, 1.0) indicate the value is to remain unchanged.
- * The default values for both weights and costs are currently 1.0, but may
- * change if good general weighting/cost heuristics can be found. If both
- * the weights and costs are set to 1.0, this degenerates the WEIGHTED method
- * to the UNWEIGHTED method, but with added encoding time/computation.
- */
-PNG_FP_EXPORT(68, void, png_set_filter_heuristics, (png_structrp png_ptr,
- int heuristic_method, int num_weights, png_const_doublep filter_weights,
- png_const_doublep filter_costs))
-PNG_FIXED_EXPORT(209, void, png_set_filter_heuristics_fixed,
- (png_structrp png_ptr, int heuristic_method, int num_weights,
- png_const_fixed_point_p filter_weights,
- png_const_fixed_point_p filter_costs))
-#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
-
-/* Heuristic used for row filter selection. These defines should NOT be
- * changed.
- */
-#define PNG_FILTER_HEURISTIC_DEFAULT 0 /* Currently "UNWEIGHTED" */
-#define PNG_FILTER_HEURISTIC_UNWEIGHTED 1 /* Used by libpng < 0.95 */
-#define PNG_FILTER_HEURISTIC_WEIGHTED 2 /* Experimental feature */
-#define PNG_FILTER_HEURISTIC_LAST 3 /* Not a valid value */
-
-#ifdef PNG_WRITE_SUPPORTED
-/* Set the library compression level. Currently, valid values range from
- * 0 - 9, corresponding directly to the zlib compression levels 0 - 9
- * (0 - no compression, 9 - "maximal" compression). Note that tests have
- * shown that zlib compression levels 3-6 usually perform as well as level 9
- * for PNG images, and do considerably fewer caclulations. In the future,
- * these values may not correspond directly to the zlib compression levels.
- */
-PNG_EXPORT(69, void, png_set_compression_level, (png_structrp png_ptr,
- int level));
-
-PNG_EXPORT(70, void, png_set_compression_mem_level, (png_structrp png_ptr,
- int mem_level));
-
-PNG_EXPORT(71, void, png_set_compression_strategy, (png_structrp png_ptr,
- int strategy));
-
-/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
- * smaller value of window_bits if it can do so safely.
- */
-PNG_EXPORT(72, void, png_set_compression_window_bits, (png_structrp png_ptr,
- int window_bits));
-
-PNG_EXPORT(73, void, png_set_compression_method, (png_structrp png_ptr,
- int method));
-#endif
-
-#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
-/* Also set zlib parameters for compressing non-IDAT chunks */
-PNG_EXPORT(222, void, png_set_text_compression_level, (png_structrp png_ptr,
- int level));
-
-PNG_EXPORT(223, void, png_set_text_compression_mem_level, (png_structrp png_ptr,
- int mem_level));
-
-PNG_EXPORT(224, void, png_set_text_compression_strategy, (png_structrp png_ptr,
- int strategy));
-
-/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
- * smaller value of window_bits if it can do so safely.
- */
-PNG_EXPORT(225, void, png_set_text_compression_window_bits,
- (png_structrp png_ptr, int window_bits));
-
-PNG_EXPORT(226, void, png_set_text_compression_method, (png_structrp png_ptr,
- int method));
-#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
-
-/* These next functions are called for input/output, memory, and error
- * handling. They are in the file pngrio.c, pngwio.c, and pngerror.c,
- * and call standard C I/O routines such as fread(), fwrite(), and
- * fprintf(). These functions can be made to use other I/O routines
- * at run time for those applications that need to handle I/O in a
- * different manner by calling png_set_???_fn(). See libpng-manual.txt for
- * more information.
- */
-
-#ifdef PNG_STDIO_SUPPORTED
-/* Initialize the input/output for the PNG file to the default functions. */
-PNG_EXPORT(74, void, png_init_io, (png_structrp png_ptr, png_FILE_p fp));
-#endif
-
-/* Replace the (error and abort), and warning functions with user
- * supplied functions. If no messages are to be printed you must still
- * write and use replacement functions. The replacement error_fn should
- * still do a longjmp to the last setjmp location if you are using this
- * method of error handling. If error_fn or warning_fn is NULL, the
- * default function will be used.
- */
-
-PNG_EXPORT(75, void, png_set_error_fn, (png_structrp png_ptr,
- png_voidp error_ptr, png_error_ptr error_fn, png_error_ptr warning_fn));
-
-/* Return the user pointer associated with the error functions */
-PNG_EXPORT(76, png_voidp, png_get_error_ptr, (png_const_structrp png_ptr));
-
-/* Replace the default data output functions with a user supplied one(s).
- * If buffered output is not used, then output_flush_fn can be set to NULL.
- * If PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile time
- * output_flush_fn will be ignored (and thus can be NULL).
- * It is probably a mistake to use NULL for output_flush_fn if
- * write_data_fn is not also NULL unless you have built libpng with
- * PNG_WRITE_FLUSH_SUPPORTED undefined, because in this case libpng's
- * default flush function, which uses the standard *FILE structure, will
- * be used.
- */
-PNG_EXPORT(77, void, png_set_write_fn, (png_structrp png_ptr, png_voidp io_ptr,
- png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn));
-
-/* Replace the default data input function with a user supplied one. */
-PNG_EXPORT(78, void, png_set_read_fn, (png_structrp png_ptr, png_voidp io_ptr,
- png_rw_ptr read_data_fn));
-
-/* Return the user pointer associated with the I/O functions */
-PNG_EXPORT(79, png_voidp, png_get_io_ptr, (png_const_structrp png_ptr));
-
-PNG_EXPORT(80, void, png_set_read_status_fn, (png_structrp png_ptr,
- png_read_status_ptr read_row_fn));
-
-PNG_EXPORT(81, void, png_set_write_status_fn, (png_structrp png_ptr,
- png_write_status_ptr write_row_fn));
-
-#ifdef PNG_USER_MEM_SUPPORTED
-/* Replace the default memory allocation functions with user supplied one(s). */
-PNG_EXPORT(82, void, png_set_mem_fn, (png_structrp png_ptr, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn));
-/* Return the user pointer associated with the memory functions */
-PNG_EXPORT(83, png_voidp, png_get_mem_ptr, (png_const_structrp png_ptr));
-#endif
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
-PNG_EXPORT(84, void, png_set_read_user_transform_fn, (png_structrp png_ptr,
- png_user_transform_ptr read_user_transform_fn));
-#endif
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
-PNG_EXPORT(85, void, png_set_write_user_transform_fn, (png_structrp png_ptr,
- png_user_transform_ptr write_user_transform_fn));
-#endif
-
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-PNG_EXPORT(86, void, png_set_user_transform_info, (png_structrp png_ptr,
- png_voidp user_transform_ptr, int user_transform_depth,
- int user_transform_channels));
-/* Return the user pointer associated with the user transform functions */
-PNG_EXPORT(87, png_voidp, png_get_user_transform_ptr,
- (png_const_structrp png_ptr));
-#endif
-
-#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
-/* Return information about the row currently being processed. Note that these
- * APIs do not fail but will return unexpected results if called outside a user
- * transform callback. Also note that when transforming an interlaced image the
- * row number is the row number within the sub-image of the interlace pass, so
- * the value will increase to the height of the sub-image (not the full image)
- * then reset to 0 for the next pass.
- *
- * Use PNG_ROW_FROM_PASS_ROW(row, pass) and PNG_COL_FROM_PASS_COL(col, pass) to
- * find the output pixel (x,y) given an interlaced sub-image pixel
- * (row,col,pass). (See below for these macros.)
- */
-PNG_EXPORT(217, png_uint_32, png_get_current_row_number, (png_const_structrp));
-PNG_EXPORT(218, png_byte, png_get_current_pass_number, (png_const_structrp));
-#endif
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
-/* This callback is called only for *unknown* chunks. If
- * PNG_HANDLE_AS_UNKNOWN_SUPPORTED is set then it is possible to set known
- * chunks to be treated as unknown, however in this case the callback must do
- * any processing required by the chunk (e.g. by calling the appropriate
- * png_set_ APIs.)
- *
- * There is no write support - on write, by default, all the chunks in the
- * 'unknown' list are written in the specified position.
- *
- * The integer return from the callback function is interpreted thus:
- *
- * negative: An error occured, png_chunk_error will be called.
- * zero: The chunk was not handled, the chunk will be saved. A critical
- * chunk will cause an error at this point unless it is to be saved.
- * positive: The chunk was handled, libpng will ignore/discard it.
- *
- * See "INTERACTION WTIH USER CHUNK CALLBACKS" below for important notes about
- * how this behavior will change in libpng 1.7
- */
-PNG_EXPORT(88, void, png_set_read_user_chunk_fn, (png_structrp png_ptr,
- png_voidp user_chunk_ptr, png_user_chunk_ptr read_user_chunk_fn));
-#endif
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
-PNG_EXPORT(89, png_voidp, png_get_user_chunk_ptr, (png_const_structrp png_ptr));
-#endif
-
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-/* Sets the function callbacks for the push reader, and a pointer to a
- * user-defined structure available to the callback functions.
- */
-PNG_EXPORT(90, void, png_set_progressive_read_fn, (png_structrp png_ptr,
- png_voidp progressive_ptr, png_progressive_info_ptr info_fn,
- png_progressive_row_ptr row_fn, png_progressive_end_ptr end_fn));
-
-/* Returns the user pointer associated with the push read functions */
-PNG_EXPORT(91, png_voidp, png_get_progressive_ptr,
- (png_const_structrp png_ptr));
-
-/* Function to be called when data becomes available */
-PNG_EXPORT(92, void, png_process_data, (png_structrp png_ptr,
- png_inforp info_ptr, png_bytep buffer, png_size_t buffer_size));
-
-/* A function which may be called *only* within png_process_data to stop the
- * processing of any more data. The function returns the number of bytes
- * remaining, excluding any that libpng has cached internally. A subsequent
- * call to png_process_data must supply these bytes again. If the argument
- * 'save' is set to true the routine will first save all the pending data and
- * will always return 0.
- */
-PNG_EXPORT(219, png_size_t, png_process_data_pause, (png_structrp, int save));
-
-/* A function which may be called *only* outside (after) a call to
- * png_process_data. It returns the number of bytes of data to skip in the
- * input. Normally it will return 0, but if it returns a non-zero value the
- * application must skip than number of bytes of input data and pass the
- * following data to the next call to png_process_data.
- */
-PNG_EXPORT(220, png_uint_32, png_process_data_skip, (png_structrp));
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
-/* Function that combines rows. 'new_row' is a flag that should come from
- * the callback and be non-NULL if anything needs to be done; the library
- * stores its own version of the new data internally and ignores the passed
- * in value.
- */
-PNG_EXPORT(93, void, png_progressive_combine_row, (png_const_structrp png_ptr,
- png_bytep old_row, png_const_bytep new_row));
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
-PNG_EXPORTA(94, png_voidp, png_malloc, (png_const_structrp png_ptr,
- png_alloc_size_t size), PNG_ALLOCATED);
-/* Added at libpng version 1.4.0 */
-PNG_EXPORTA(95, png_voidp, png_calloc, (png_const_structrp png_ptr,
- png_alloc_size_t size), PNG_ALLOCATED);
-
-/* Added at libpng version 1.2.4 */
-PNG_EXPORTA(96, png_voidp, png_malloc_warn, (png_const_structrp png_ptr,
- png_alloc_size_t size), PNG_ALLOCATED);
-
-/* Frees a pointer allocated by png_malloc() */
-PNG_EXPORT(97, void, png_free, (png_const_structrp png_ptr, png_voidp ptr));
-
-/* Free data that was allocated internally */
-PNG_EXPORT(98, void, png_free_data, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 free_me, int num));
-
-/* Reassign responsibility for freeing existing data, whether allocated
- * by libpng or by the application; this works on the png_info structure passed
- * in, it does not change the state for other png_info structures.
- *
- * It is unlikely that this function works correctly as of 1.6.0 and using it
- * may result either in memory leaks or double free of allocated data.
- */
-PNG_EXPORTA(99, void, png_data_freer, (png_const_structrp png_ptr,
- png_inforp info_ptr, int freer, png_uint_32 mask), PNG_DEPRECATED);
-
-/* Assignments for png_data_freer */
-#define PNG_DESTROY_WILL_FREE_DATA 1
-#define PNG_SET_WILL_FREE_DATA 1
-#define PNG_USER_WILL_FREE_DATA 2
-/* Flags for png_ptr->free_me and info_ptr->free_me */
-#define PNG_FREE_HIST 0x0008
-#define PNG_FREE_ICCP 0x0010
-#define PNG_FREE_SPLT 0x0020
-#define PNG_FREE_ROWS 0x0040
-#define PNG_FREE_PCAL 0x0080
-#define PNG_FREE_SCAL 0x0100
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-# define PNG_FREE_UNKN 0x0200
-#endif
-/* PNG_FREE_LIST 0x0400 removed in 1.6.0 because it is ignored */
-#define PNG_FREE_PLTE 0x1000
-#define PNG_FREE_TRNS 0x2000
-#define PNG_FREE_TEXT 0x4000
-#define PNG_FREE_ALL 0x7fff
-#define PNG_FREE_MUL 0x4220 /* PNG_FREE_SPLT|PNG_FREE_TEXT|PNG_FREE_UNKN */
-
-#ifdef PNG_USER_MEM_SUPPORTED
-PNG_EXPORTA(100, png_voidp, png_malloc_default, (png_const_structrp png_ptr,
- png_alloc_size_t size), PNG_ALLOCATED PNG_DEPRECATED);
-PNG_EXPORTA(101, void, png_free_default, (png_const_structrp png_ptr,
- png_voidp ptr), PNG_DEPRECATED);
-#endif
-
-#ifdef PNG_ERROR_TEXT_SUPPORTED
-/* Fatal error in PNG image of libpng - can't continue */
-PNG_EXPORTA(102, void, png_error, (png_const_structrp png_ptr,
- png_const_charp error_message), PNG_NORETURN);
-
-/* The same, but the chunk name is prepended to the error string. */
-PNG_EXPORTA(103, void, png_chunk_error, (png_const_structrp png_ptr,
- png_const_charp error_message), PNG_NORETURN);
-
-#else
-/* Fatal error in PNG image of libpng - can't continue */
-PNG_EXPORTA(104, void, png_err, (png_const_structrp png_ptr), PNG_NORETURN);
-#endif
-
-#ifdef PNG_WARNINGS_SUPPORTED
-/* Non-fatal error in libpng. Can continue, but may have a problem. */
-PNG_EXPORT(105, void, png_warning, (png_const_structrp png_ptr,
- png_const_charp warning_message));
-
-/* Non-fatal error in libpng, chunk name is prepended to message. */
-PNG_EXPORT(106, void, png_chunk_warning, (png_const_structrp png_ptr,
- png_const_charp warning_message));
-#endif
-
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-/* Benign error in libpng. Can continue, but may have a problem.
- * User can choose whether to handle as a fatal error or as a warning. */
-PNG_EXPORT(107, void, png_benign_error, (png_const_structrp png_ptr,
- png_const_charp warning_message));
-
-#ifdef PNG_READ_SUPPORTED
-/* Same, chunk name is prepended to message (only during read) */
-PNG_EXPORT(108, void, png_chunk_benign_error, (png_const_structrp png_ptr,
- png_const_charp warning_message));
-#endif
-
-PNG_EXPORT(109, void, png_set_benign_errors,
- (png_structrp png_ptr, int allowed));
-#else
-# ifdef PNG_ALLOW_BENIGN_ERRORS
-# define png_benign_error png_warning
-# define png_chunk_benign_error png_chunk_warning
-# else
-# define png_benign_error png_error
-# define png_chunk_benign_error png_chunk_error
-# endif
-#endif
-
-/* The png_set_<chunk> functions are for storing values in the png_info_struct.
- * Similarly, the png_get_<chunk> calls are used to read values from the
- * png_info_struct, either storing the parameters in the passed variables, or
- * setting pointers into the png_info_struct where the data is stored. The
- * png_get_<chunk> functions return a non-zero value if the data was available
- * in info_ptr, or return zero and do not change any of the parameters if the
- * data was not available.
- *
- * These functions should be used instead of directly accessing png_info
- * to avoid problems with future changes in the size and internal layout of
- * png_info_struct.
- */
-/* Returns "flag" if chunk data is valid in info_ptr. */
-PNG_EXPORT(110, png_uint_32, png_get_valid, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, png_uint_32 flag));
-
-/* Returns number of bytes needed to hold a transformed row. */
-PNG_EXPORT(111, png_size_t, png_get_rowbytes, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-/* Returns row_pointers, which is an array of pointers to scanlines that was
- * returned from png_read_png().
- */
-PNG_EXPORT(112, png_bytepp, png_get_rows, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Set row_pointers, which is an array of pointers to scanlines for use
- * by png_write_png().
- */
-PNG_EXPORT(113, void, png_set_rows, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_bytepp row_pointers));
-#endif
-
-/* Returns number of color channels in image. */
-PNG_EXPORT(114, png_byte, png_get_channels, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-#ifdef PNG_EASY_ACCESS_SUPPORTED
-/* Returns image width in pixels. */
-PNG_EXPORT(115, png_uint_32, png_get_image_width, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image height in pixels. */
-PNG_EXPORT(116, png_uint_32, png_get_image_height, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image bit_depth. */
-PNG_EXPORT(117, png_byte, png_get_bit_depth, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image color_type. */
-PNG_EXPORT(118, png_byte, png_get_color_type, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image filter_type. */
-PNG_EXPORT(119, png_byte, png_get_filter_type, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image interlace_type. */
-PNG_EXPORT(120, png_byte, png_get_interlace_type, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image compression_type. */
-PNG_EXPORT(121, png_byte, png_get_compression_type, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-
-/* Returns image resolution in pixels per meter, from pHYs chunk data. */
-PNG_EXPORT(122, png_uint_32, png_get_pixels_per_meter,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-PNG_EXPORT(123, png_uint_32, png_get_x_pixels_per_meter,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-PNG_EXPORT(124, png_uint_32, png_get_y_pixels_per_meter,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-
-/* Returns pixel aspect ratio, computed from pHYs chunk data. */
-PNG_FP_EXPORT(125, float, png_get_pixel_aspect_ratio,
- (png_const_structrp png_ptr, png_const_inforp info_ptr))
-PNG_FIXED_EXPORT(210, png_fixed_point, png_get_pixel_aspect_ratio_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr))
-
-/* Returns image x, y offset in pixels or microns, from oFFs chunk data. */
-PNG_EXPORT(126, png_int_32, png_get_x_offset_pixels,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-PNG_EXPORT(127, png_int_32, png_get_y_offset_pixels,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-PNG_EXPORT(128, png_int_32, png_get_x_offset_microns,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-PNG_EXPORT(129, png_int_32, png_get_y_offset_microns,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-
-#endif /* PNG_EASY_ACCESS_SUPPORTED */
-
-#ifdef PNG_READ_SUPPORTED
-/* Returns pointer to signature string read from PNG header */
-PNG_EXPORT(130, png_const_bytep, png_get_signature, (png_const_structrp png_ptr,
- png_const_inforp info_ptr));
-#endif
-
-#ifdef PNG_bKGD_SUPPORTED
-PNG_EXPORT(131, png_uint_32, png_get_bKGD, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_color_16p *background));
-#endif
-
-#ifdef PNG_bKGD_SUPPORTED
-PNG_EXPORT(132, void, png_set_bKGD, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_color_16p background));
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
-PNG_FP_EXPORT(133, png_uint_32, png_get_cHRM, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, double *white_x, double *white_y, double *red_x,
- double *red_y, double *green_x, double *green_y, double *blue_x,
- double *blue_y))
-PNG_FP_EXPORT(230, png_uint_32, png_get_cHRM_XYZ, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, double *red_X, double *red_Y, double *red_Z,
- double *green_X, double *green_Y, double *green_Z, double *blue_X,
- double *blue_Y, double *blue_Z))
-PNG_FIXED_EXPORT(134, png_uint_32, png_get_cHRM_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_fixed_point *int_white_x, png_fixed_point *int_white_y,
- png_fixed_point *int_red_x, png_fixed_point *int_red_y,
- png_fixed_point *int_green_x, png_fixed_point *int_green_y,
- png_fixed_point *int_blue_x, png_fixed_point *int_blue_y))
-PNG_FIXED_EXPORT(231, png_uint_32, png_get_cHRM_XYZ_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
- png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
- png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
- png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
- png_fixed_point *int_blue_Z))
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
-PNG_FP_EXPORT(135, void, png_set_cHRM, (png_const_structrp png_ptr,
- png_inforp info_ptr,
- double white_x, double white_y, double red_x, double red_y, double green_x,
- double green_y, double blue_x, double blue_y))
-PNG_FP_EXPORT(232, void, png_set_cHRM_XYZ, (png_const_structrp png_ptr,
- png_inforp info_ptr, double red_X, double red_Y, double red_Z,
- double green_X, double green_Y, double green_Z, double blue_X,
- double blue_Y, double blue_Z))
-PNG_FIXED_EXPORT(136, void, png_set_cHRM_fixed, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_fixed_point int_white_x,
- png_fixed_point int_white_y, png_fixed_point int_red_x,
- png_fixed_point int_red_y, png_fixed_point int_green_x,
- png_fixed_point int_green_y, png_fixed_point int_blue_x,
- png_fixed_point int_blue_y))
-PNG_FIXED_EXPORT(233, void, png_set_cHRM_XYZ_fixed, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_fixed_point int_red_X, png_fixed_point int_red_Y,
- png_fixed_point int_red_Z, png_fixed_point int_green_X,
- png_fixed_point int_green_Y, png_fixed_point int_green_Z,
- png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
- png_fixed_point int_blue_Z))
-#endif
-
-#ifdef PNG_gAMA_SUPPORTED
-PNG_FP_EXPORT(137, png_uint_32, png_get_gAMA, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, double *file_gamma))
-PNG_FIXED_EXPORT(138, png_uint_32, png_get_gAMA_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_fixed_point *int_file_gamma))
-#endif
-
-#ifdef PNG_gAMA_SUPPORTED
-PNG_FP_EXPORT(139, void, png_set_gAMA, (png_const_structrp png_ptr,
- png_inforp info_ptr, double file_gamma))
-PNG_FIXED_EXPORT(140, void, png_set_gAMA_fixed, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_fixed_point int_file_gamma))
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
-PNG_EXPORT(141, png_uint_32, png_get_hIST, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_uint_16p *hist));
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
-PNG_EXPORT(142, void, png_set_hIST, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_uint_16p hist));
-#endif
-
-PNG_EXPORT(143, png_uint_32, png_get_IHDR, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, png_uint_32 *width, png_uint_32 *height,
- int *bit_depth, int *color_type, int *interlace_method,
- int *compression_method, int *filter_method));
-
-PNG_EXPORT(144, void, png_set_IHDR, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_method, int compression_method,
- int filter_method));
-
-#ifdef PNG_oFFs_SUPPORTED
-PNG_EXPORT(145, png_uint_32, png_get_oFFs, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, png_int_32 *offset_x, png_int_32 *offset_y,
- int *unit_type));
-#endif
-
-#ifdef PNG_oFFs_SUPPORTED
-PNG_EXPORT(146, void, png_set_oFFs, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_int_32 offset_x, png_int_32 offset_y,
- int unit_type));
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
-PNG_EXPORT(147, png_uint_32, png_get_pCAL, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_charp *purpose, png_int_32 *X0,
- png_int_32 *X1, int *type, int *nparams, png_charp *units,
- png_charpp *params));
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
-PNG_EXPORT(148, void, png_set_pCAL, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_charp purpose, png_int_32 X0, png_int_32 X1,
- int type, int nparams, png_const_charp units, png_charpp params));
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(149, png_uint_32, png_get_pHYs, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y,
- int *unit_type));
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(150, void, png_set_pHYs, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 res_x, png_uint_32 res_y, int unit_type));
-#endif
-
-PNG_EXPORT(151, png_uint_32, png_get_PLTE, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_colorp *palette, int *num_palette));
-
-PNG_EXPORT(152, void, png_set_PLTE, (png_structrp png_ptr,
- png_inforp info_ptr, png_const_colorp palette, int num_palette));
-
-#ifdef PNG_sBIT_SUPPORTED
-PNG_EXPORT(153, png_uint_32, png_get_sBIT, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_color_8p *sig_bit));
-#endif
-
-#ifdef PNG_sBIT_SUPPORTED
-PNG_EXPORT(154, void, png_set_sBIT, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_color_8p sig_bit));
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
-PNG_EXPORT(155, png_uint_32, png_get_sRGB, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, int *file_srgb_intent));
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
-PNG_EXPORT(156, void, png_set_sRGB, (png_const_structrp png_ptr,
- png_inforp info_ptr, int srgb_intent));
-PNG_EXPORT(157, void, png_set_sRGB_gAMA_and_cHRM, (png_const_structrp png_ptr,
- png_inforp info_ptr, int srgb_intent));
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
-PNG_EXPORT(158, png_uint_32, png_get_iCCP, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_charpp name, int *compression_type,
- png_bytepp profile, png_uint_32 *proflen));
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
-PNG_EXPORT(159, void, png_set_iCCP, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_charp name, int compression_type,
- png_const_bytep profile, png_uint_32 proflen));
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
-PNG_EXPORT(160, int, png_get_sPLT, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_sPLT_tpp entries));
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
-PNG_EXPORT(161, void, png_set_sPLT, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_sPLT_tp entries, int nentries));
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
-/* png_get_text also returns the number of text chunks in *num_text */
-PNG_EXPORT(162, int, png_get_text, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_textp *text_ptr, int *num_text));
-#endif
-
-/* Note while png_set_text() will accept a structure whose text,
- * language, and translated keywords are NULL pointers, the structure
- * returned by png_get_text will always contain regular
- * zero-terminated C strings. They might be empty strings but
- * they will never be NULL pointers.
- */
-
-#ifdef PNG_TEXT_SUPPORTED
-PNG_EXPORT(163, void, png_set_text, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_textp text_ptr, int num_text));
-#endif
-
-#ifdef PNG_tIME_SUPPORTED
-PNG_EXPORT(164, png_uint_32, png_get_tIME, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_timep *mod_time));
-#endif
-
-#ifdef PNG_tIME_SUPPORTED
-PNG_EXPORT(165, void, png_set_tIME, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_timep mod_time));
-#endif
-
-#ifdef PNG_tRNS_SUPPORTED
-PNG_EXPORT(166, png_uint_32, png_get_tRNS, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_bytep *trans_alpha, int *num_trans,
- png_color_16p *trans_color));
-#endif
-
-#ifdef PNG_tRNS_SUPPORTED
-PNG_EXPORT(167, void, png_set_tRNS, (png_structrp png_ptr,
- png_inforp info_ptr, png_const_bytep trans_alpha, int num_trans,
- png_const_color_16p trans_color));
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
-PNG_FP_EXPORT(168, png_uint_32, png_get_sCAL, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, int *unit, double *width, double *height))
-#if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \
- defined(PNG_FLOATING_POINT_SUPPORTED)
-/* NOTE: this API is currently implemented using floating point arithmetic,
- * consequently it can only be used on systems with floating point support.
- * In any case the range of values supported by png_fixed_point is small and it
- * is highly recommended that png_get_sCAL_s be used instead.
- */
-PNG_FIXED_EXPORT(214, png_uint_32, png_get_sCAL_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit,
- png_fixed_point *width, png_fixed_point *height))
-#endif
-PNG_EXPORT(169, png_uint_32, png_get_sCAL_s,
- (png_const_structrp png_ptr, png_const_inforp info_ptr, int *unit,
- png_charpp swidth, png_charpp sheight));
-
-PNG_FP_EXPORT(170, void, png_set_sCAL, (png_const_structrp png_ptr,
- png_inforp info_ptr, int unit, double width, double height))
-PNG_FIXED_EXPORT(213, void, png_set_sCAL_fixed, (png_const_structrp png_ptr,
- png_inforp info_ptr, int unit, png_fixed_point width,
- png_fixed_point height))
-PNG_EXPORT(171, void, png_set_sCAL_s, (png_const_structrp png_ptr,
- png_inforp info_ptr, int unit,
- png_const_charp swidth, png_const_charp sheight));
-#endif /* PNG_sCAL_SUPPORTED */
-
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
-/* Provide the default handling for all unknown chunks or, optionally, for
- * specific unknown chunks.
- *
- * NOTE: prior to 1.6.0 the handling specified for particular chunks on read was
- * ignored and the default was used, the per-chunk setting only had an effect on
- * write. If you wish to have chunk-specific handling on read in code that must
- * work on earlier versions you must use a user chunk callback to specify the
- * desired handling (keep or discard.)
- *
- * The 'keep' parameter is a PNG_HANDLE_CHUNK_ value as listed below. The
- * parameter is interpreted as follows:
- *
- * READ:
- * PNG_HANDLE_CHUNK_AS_DEFAULT:
- * Known chunks: do normal libpng processing, do not keep the chunk (but
- * see the comments below about PNG_HANDLE_AS_UNKNOWN_SUPPORTED)
- * Unknown chunks: for a specific chunk use the global default, when used
- * as the default discard the chunk data.
- * PNG_HANDLE_CHUNK_NEVER:
- * Discard the chunk data.
- * PNG_HANDLE_CHUNK_IF_SAFE:
- * Keep the chunk data if the chunk is not critical else raise a chunk
- * error.
- * PNG_HANDLE_CHUNK_ALWAYS:
- * Keep the chunk data.
- *
- * If the chunk data is saved it can be retrieved using png_get_unknown_chunks,
- * below. Notice that specifying "AS_DEFAULT" as a global default is equivalent
- * to specifying "NEVER", however when "AS_DEFAULT" is used for specific chunks
- * it simply resets the behavior to the libpng default.
- *
- * INTERACTION WTIH USER CHUNK CALLBACKS:
- * The per-chunk handling is always used when there is a png_user_chunk_ptr
- * callback and the callback returns 0; the chunk is then always stored *unless*
- * it is critical and the per-chunk setting is other than ALWAYS. Notice that
- * the global default is *not* used in this case. (In effect the per-chunk
- * value is incremented to at least IF_SAFE.)
- *
- * IMPORTANT NOTE: this behavior will change in libpng 1.7 - the global and
- * per-chunk defaults will be honored. If you want to preserve the current
- * behavior when your callback returns 0 you must set PNG_HANDLE_CHUNK_IF_SAFE
- * as the default - if you don't do this libpng 1.6 will issue a warning.
- *
- * If you want unhandled unknown chunks to be discarded in libpng 1.6 and
- * earlier simply return '1' (handled).
- *
- * PNG_HANDLE_AS_UNKNOWN_SUPPORTED:
- * If this is *not* set known chunks will always be handled by libpng and
- * will never be stored in the unknown chunk list. Known chunks listed to
- * png_set_keep_unknown_chunks will have no effect. If it is set then known
- * chunks listed with a keep other than AS_DEFAULT will *never* be processed
- * by libpng, in addition critical chunks must either be processed by the
- * callback or saved.
- *
- * The IHDR and IEND chunks must not be listed. Because this turns off the
- * default handling for chunks that would otherwise be recognized the
- * behavior of libpng transformations may well become incorrect!
- *
- * WRITE:
- * When writing chunks the options only apply to the chunks specified by
- * png_set_unknown_chunks (below), libpng will *always* write known chunks
- * required by png_set_ calls and will always write the core critical chunks
- * (as required for PLTE).
- *
- * Each chunk in the png_set_unknown_chunks list is looked up in the
- * png_set_keep_unknown_chunks list to find the keep setting, this is then
- * interpreted as follows:
- *
- * PNG_HANDLE_CHUNK_AS_DEFAULT:
- * Write safe-to-copy chunks and write other chunks if the global
- * default is set to _ALWAYS, otherwise don't write this chunk.
- * PNG_HANDLE_CHUNK_NEVER:
- * Do not write the chunk.
- * PNG_HANDLE_CHUNK_IF_SAFE:
- * Write the chunk if it is safe-to-copy, otherwise do not write it.
- * PNG_HANDLE_CHUNK_ALWAYS:
- * Write the chunk.
- *
- * Note that the default behavior is effectively the opposite of the read case -
- * in read unknown chunks are not stored by default, in write they are written
- * by default. Also the behavior of PNG_HANDLE_CHUNK_IF_SAFE is very different
- * - on write the safe-to-copy bit is checked, on read the critical bit is
- * checked and on read if the chunk is critical an error will be raised.
- *
- * num_chunks:
- * ===========
- * If num_chunks is positive, then the "keep" parameter specifies the manner
- * for handling only those chunks appearing in the chunk_list array,
- * otherwise the chunk list array is ignored.
- *
- * If num_chunks is 0 the "keep" parameter specifies the default behavior for
- * unknown chunks, as described above.
- *
- * If num_chunks is negative, then the "keep" parameter specifies the manner
- * for handling all unknown chunks plus all chunks recognized by libpng
- * except for the IHDR, PLTE, tRNS, IDAT, and IEND chunks (which continue to
- * be processed by libpng.
- */
-PNG_EXPORT(172, void, png_set_keep_unknown_chunks, (png_structrp png_ptr,
- int keep, png_const_bytep chunk_list, int num_chunks));
-
-/* The "keep" PNG_HANDLE_CHUNK_ parameter for the specified chunk is returned;
- * the result is therefore true (non-zero) if special handling is required,
- * false for the default handling.
- */
-PNG_EXPORT(173, int, png_handle_as_unknown, (png_const_structrp png_ptr,
- png_const_bytep chunk_name));
-#endif
-
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-PNG_EXPORT(174, void, png_set_unknown_chunks, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_unknown_chunkp unknowns,
- int num_unknowns));
- /* NOTE: prior to 1.6.0 this routine set the 'location' field of the added
- * unknowns to the location currently stored in the png_struct. This is
- * invariably the wrong value on write. To fix this call the following API
- * for each chunk in the list with the correct location. If you know your
- * code won't be compiled on earlier versions you can rely on
- * png_set_unknown_chunks(write-ptr, png_get_unknown_chunks(read-ptr)) doing
- * the correct thing.
- */
-
-PNG_EXPORT(175, void, png_set_unknown_chunk_location,
- (png_const_structrp png_ptr, png_inforp info_ptr, int chunk, int location));
-
-PNG_EXPORT(176, int, png_get_unknown_chunks, (png_const_structrp png_ptr,
- png_inforp info_ptr, png_unknown_chunkpp entries));
-#endif
-
-/* Png_free_data() will turn off the "valid" flag for anything it frees.
- * If you need to turn it off for a chunk that your application has freed,
- * you can use png_set_invalid(png_ptr, info_ptr, PNG_INFO_CHNK);
- */
-PNG_EXPORT(177, void, png_set_invalid, (png_const_structrp png_ptr,
- png_inforp info_ptr, int mask));
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-/* The "params" pointer is currently not used and is for future expansion. */
-PNG_EXPORT(178, void, png_read_png, (png_structrp png_ptr, png_inforp info_ptr,
- int transforms, png_voidp params));
-PNG_EXPORT(179, void, png_write_png, (png_structrp png_ptr, png_inforp info_ptr,
- int transforms, png_voidp params));
-#endif
-
-PNG_EXPORT(180, png_const_charp, png_get_copyright,
- (png_const_structrp png_ptr));
-PNG_EXPORT(181, png_const_charp, png_get_header_ver,
- (png_const_structrp png_ptr));
-PNG_EXPORT(182, png_const_charp, png_get_header_version,
- (png_const_structrp png_ptr));
-PNG_EXPORT(183, png_const_charp, png_get_libpng_ver,
- (png_const_structrp png_ptr));
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-PNG_EXPORT(184, png_uint_32, png_permit_mng_features, (png_structrp png_ptr,
- png_uint_32 mng_features_permitted));
-#endif
-
-/* For use in png_set_keep_unknown, added to version 1.2.6 */
-#define PNG_HANDLE_CHUNK_AS_DEFAULT 0
-#define PNG_HANDLE_CHUNK_NEVER 1
-#define PNG_HANDLE_CHUNK_IF_SAFE 2
-#define PNG_HANDLE_CHUNK_ALWAYS 3
-#define PNG_HANDLE_CHUNK_LAST 4
-
-/* Strip the prepended error numbers ("#nnn ") from error and warning
- * messages before passing them to the error or warning handler.
- */
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
-PNG_EXPORT(185, void, png_set_strip_error_numbers, (png_structrp png_ptr,
- png_uint_32 strip_mode));
-#endif
-
-/* Added in libpng-1.2.6 */
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-PNG_EXPORT(186, void, png_set_user_limits, (png_structrp png_ptr,
- png_uint_32 user_width_max, png_uint_32 user_height_max));
-PNG_EXPORT(187, png_uint_32, png_get_user_width_max,
- (png_const_structrp png_ptr));
-PNG_EXPORT(188, png_uint_32, png_get_user_height_max,
- (png_const_structrp png_ptr));
-/* Added in libpng-1.4.0 */
-PNG_EXPORT(189, void, png_set_chunk_cache_max, (png_structrp png_ptr,
- png_uint_32 user_chunk_cache_max));
-PNG_EXPORT(190, png_uint_32, png_get_chunk_cache_max,
- (png_const_structrp png_ptr));
-/* Added in libpng-1.4.1 */
-PNG_EXPORT(191, void, png_set_chunk_malloc_max, (png_structrp png_ptr,
- png_alloc_size_t user_chunk_cache_max));
-PNG_EXPORT(192, png_alloc_size_t, png_get_chunk_malloc_max,
- (png_const_structrp png_ptr));
-#endif
-
-#if defined(PNG_INCH_CONVERSIONS_SUPPORTED)
-PNG_EXPORT(193, png_uint_32, png_get_pixels_per_inch,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-
-PNG_EXPORT(194, png_uint_32, png_get_x_pixels_per_inch,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-
-PNG_EXPORT(195, png_uint_32, png_get_y_pixels_per_inch,
- (png_const_structrp png_ptr, png_const_inforp info_ptr));
-
-PNG_FP_EXPORT(196, float, png_get_x_offset_inches,
- (png_const_structrp png_ptr, png_const_inforp info_ptr))
-#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
-PNG_FIXED_EXPORT(211, png_fixed_point, png_get_x_offset_inches_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr))
-#endif
-
-PNG_FP_EXPORT(197, float, png_get_y_offset_inches, (png_const_structrp png_ptr,
- png_const_inforp info_ptr))
-#ifdef PNG_FIXED_POINT_SUPPORTED /* otherwise not implemented. */
-PNG_FIXED_EXPORT(212, png_fixed_point, png_get_y_offset_inches_fixed,
- (png_const_structrp png_ptr, png_const_inforp info_ptr))
-#endif
-
-# ifdef PNG_pHYs_SUPPORTED
-PNG_EXPORT(198, png_uint_32, png_get_pHYs_dpi, (png_const_structrp png_ptr,
- png_const_inforp info_ptr, png_uint_32 *res_x, png_uint_32 *res_y,
- int *unit_type));
-# endif /* PNG_pHYs_SUPPORTED */
-#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
-
-/* Added in libpng-1.4.0 */
-#ifdef PNG_IO_STATE_SUPPORTED
-PNG_EXPORT(199, png_uint_32, png_get_io_state, (png_const_structrp png_ptr));
-
-/* Removed from libpng 1.6; use png_get_io_chunk_type. */
-PNG_REMOVED(200, png_const_bytep, png_get_io_chunk_name, (png_structrp png_ptr),
- PNG_DEPRECATED)
-
-PNG_EXPORT(216, png_uint_32, png_get_io_chunk_type,
- (png_const_structrp png_ptr));
-
-/* The flags returned by png_get_io_state() are the following: */
-# define PNG_IO_NONE 0x0000 /* no I/O at this moment */
-# define PNG_IO_READING 0x0001 /* currently reading */
-# define PNG_IO_WRITING 0x0002 /* currently writing */
-# define PNG_IO_SIGNATURE 0x0010 /* currently at the file signature */
-# define PNG_IO_CHUNK_HDR 0x0020 /* currently at the chunk header */
-# define PNG_IO_CHUNK_DATA 0x0040 /* currently at the chunk data */
-# define PNG_IO_CHUNK_CRC 0x0080 /* currently at the chunk crc */
-# define PNG_IO_MASK_OP 0x000f /* current operation: reading/writing */
-# define PNG_IO_MASK_LOC 0x00f0 /* current location: sig/hdr/data/crc */
-#endif /* ?PNG_IO_STATE_SUPPORTED */
-
-/* Interlace support. The following macros are always defined so that if
- * libpng interlace handling is turned off the macros may be used to handle
- * interlaced images within the application.
- */
-#define PNG_INTERLACE_ADAM7_PASSES 7
-
-/* Two macros to return the first row and first column of the original,
- * full, image which appears in a given pass. 'pass' is in the range 0
- * to 6 and the result is in the range 0 to 7.
- */
-#define PNG_PASS_START_ROW(pass) (((1&~(pass))<<(3-((pass)>>1)))&7)
-#define PNG_PASS_START_COL(pass) (((1& (pass))<<(3-(((pass)+1)>>1)))&7)
-
-/* A macro to return the offset between pixels in the output row for a pair of
- * pixels in the input - effectively the inverse of the 'COL_SHIFT' macro that
- * follows. Note that ROW_OFFSET is the offset from one row to the next whereas
- * COL_OFFSET is from one column to the next, within a row.
- */
-#define PNG_PASS_ROW_OFFSET(pass) ((pass)>2?(8>>(((pass)-1)>>1)):8)
-#define PNG_PASS_COL_OFFSET(pass) (1<<((7-(pass))>>1))
-
-/* Two macros to help evaluate the number of rows or columns in each
- * pass. This is expressed as a shift - effectively log2 of the number or
- * rows or columns in each 8x8 tile of the original image.
- */
-#define PNG_PASS_ROW_SHIFT(pass) ((pass)>2?(8-(pass))>>1:3)
-#define PNG_PASS_COL_SHIFT(pass) ((pass)>1?(7-(pass))>>1:3)
-
-/* Hence two macros to determine the number of rows or columns in a given
- * pass of an image given its height or width. In fact these macros may
- * return non-zero even though the sub-image is empty, because the other
- * dimension may be empty for a small image.
- */
-#define PNG_PASS_ROWS(height, pass) (((height)+(((1<<PNG_PASS_ROW_SHIFT(pass))\
- -1)-PNG_PASS_START_ROW(pass)))>>PNG_PASS_ROW_SHIFT(pass))
-#define PNG_PASS_COLS(width, pass) (((width)+(((1<<PNG_PASS_COL_SHIFT(pass))\
- -1)-PNG_PASS_START_COL(pass)))>>PNG_PASS_COL_SHIFT(pass))
-
-/* For the reader row callbacks (both progressive and sequential) it is
- * necessary to find the row in the output image given a row in an interlaced
- * image, so two more macros:
- */
-#define PNG_ROW_FROM_PASS_ROW(y_in, pass) \
- (((y_in)<<PNG_PASS_ROW_SHIFT(pass))+PNG_PASS_START_ROW(pass))
-#define PNG_COL_FROM_PASS_COL(x_in, pass) \
- (((x_in)<<PNG_PASS_COL_SHIFT(pass))+PNG_PASS_START_COL(pass))
-
-/* Two macros which return a boolean (0 or 1) saying whether the given row
- * or column is in a particular pass. These use a common utility macro that
- * returns a mask for a given pass - the offset 'off' selects the row or
- * column version. The mask has the appropriate bit set for each column in
- * the tile.
- */
-#define PNG_PASS_MASK(pass,off) ( \
- ((0x110145AF>>(((7-(off))-(pass))<<2)) & 0xF) | \
- ((0x01145AF0>>(((7-(off))-(pass))<<2)) & 0xF0))
-
-#define PNG_ROW_IN_INTERLACE_PASS(y, pass) \
- ((PNG_PASS_MASK(pass,0) >> ((y)&7)) & 1)
-#define PNG_COL_IN_INTERLACE_PASS(x, pass) \
- ((PNG_PASS_MASK(pass,1) >> ((x)&7)) & 1)
-
-#ifdef PNG_READ_COMPOSITE_NODIV_SUPPORTED
-/* With these routines we avoid an integer divide, which will be slower on
- * most machines. However, it does take more operations than the corresponding
- * divide method, so it may be slower on a few RISC systems. There are two
- * shifts (by 8 or 16 bits) and an addition, versus a single integer divide.
- *
- * Note that the rounding factors are NOT supposed to be the same! 128 and
- * 32768 are correct for the NODIV code; 127 and 32767 are correct for the
- * standard method.
- *
- * [Optimized code by Greg Roelofs and Mark Adler...blame us for bugs. :-) ]
- */
-
- /* fg and bg should be in `gamma 1.0' space; alpha is the opacity */
-
-# define png_composite(composite, fg, alpha, bg) \
- { png_uint_16 temp = (png_uint_16)((png_uint_16)(fg) \
- * (png_uint_16)(alpha) \
- + (png_uint_16)(bg)*(png_uint_16)(255 \
- - (png_uint_16)(alpha)) + 128); \
- (composite) = (png_byte)((temp + (temp >> 8)) >> 8); }
-
-# define png_composite_16(composite, fg, alpha, bg) \
- { png_uint_32 temp = (png_uint_32)((png_uint_32)(fg) \
- * (png_uint_32)(alpha) \
- + (png_uint_32)(bg)*(65535 \
- - (png_uint_32)(alpha)) + 32768); \
- (composite) = (png_uint_16)((temp + (temp >> 16)) >> 16); }
-
-#else /* Standard method using integer division */
-
-# define png_composite(composite, fg, alpha, bg) \
- (composite) = (png_byte)(((png_uint_16)(fg) * (png_uint_16)(alpha) + \
- (png_uint_16)(bg) * (png_uint_16)(255 - (png_uint_16)(alpha)) + \
- 127) / 255)
-
-# define png_composite_16(composite, fg, alpha, bg) \
- (composite) = (png_uint_16)(((png_uint_32)(fg) * (png_uint_32)(alpha) + \
- (png_uint_32)(bg)*(png_uint_32)(65535 - (png_uint_32)(alpha)) + \
- 32767) / 65535)
-#endif /* PNG_READ_COMPOSITE_NODIV_SUPPORTED */
-
-#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
-PNG_EXPORT(201, png_uint_32, png_get_uint_32, (png_const_bytep buf));
-PNG_EXPORT(202, png_uint_16, png_get_uint_16, (png_const_bytep buf));
-PNG_EXPORT(203, png_int_32, png_get_int_32, (png_const_bytep buf));
-#endif
-
-PNG_EXPORT(204, png_uint_32, png_get_uint_31, (png_const_structrp png_ptr,
- png_const_bytep buf));
-/* No png_get_int_16 -- may be added if there's a real need for it. */
-
-/* Place a 32-bit number into a buffer in PNG byte order (big-endian). */
-#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
-PNG_EXPORT(205, void, png_save_uint_32, (png_bytep buf, png_uint_32 i));
-#endif
-#ifdef PNG_SAVE_INT_32_SUPPORTED
-PNG_EXPORT(206, void, png_save_int_32, (png_bytep buf, png_int_32 i));
-#endif
-
-/* Place a 16-bit number into a buffer in PNG byte order.
- * The parameter is declared unsigned int, not png_uint_16,
- * just to avoid potential problems on pre-ANSI C compilers.
- */
-#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
-PNG_EXPORT(207, void, png_save_uint_16, (png_bytep buf, unsigned int i));
-/* No png_save_int_16 -- may be added if there's a real need for it. */
-#endif
-
-#ifdef PNG_USE_READ_MACROS
-/* Inline macros to do direct reads of bytes from the input buffer.
- * The png_get_int_32() routine assumes we are using two's complement
- * format for negative values, which is almost certainly true.
- */
-# define PNG_get_uint_32(buf) \
- (((png_uint_32)(*(buf)) << 24) + \
- ((png_uint_32)(*((buf) + 1)) << 16) + \
- ((png_uint_32)(*((buf) + 2)) << 8) + \
- ((png_uint_32)(*((buf) + 3))))
-
- /* From libpng-1.4.0 until 1.4.4, the png_get_uint_16 macro (but not the
- * function) incorrectly returned a value of type png_uint_32.
- */
-# define PNG_get_uint_16(buf) \
- ((png_uint_16) \
- (((unsigned int)(*(buf)) << 8) + \
- ((unsigned int)(*((buf) + 1)))))
-
-# define PNG_get_int_32(buf) \
- ((png_int_32)((*(buf) & 0x80) \
- ? -((png_int_32)((png_get_uint_32(buf) ^ 0xffffffffL) + 1)) \
- : (png_int_32)png_get_uint_32(buf)))
-
- /* If PNG_PREFIX is defined the same thing as below happens in pnglibconf.h,
- * but defining a macro name prefixed with PNG_PREFIX.
- */
-# ifndef PNG_PREFIX
-# define png_get_uint_32(buf) PNG_get_uint_32(buf)
-# define png_get_uint_16(buf) PNG_get_uint_16(buf)
-# define png_get_int_32(buf) PNG_get_int_32(buf)
-# endif
-#else
-# ifdef PNG_PREFIX
- /* No macros; revert to the (redefined) function */
-# define PNG_get_uint_32 (png_get_uint_32)
-# define PNG_get_uint_16 (png_get_uint_16)
-# define PNG_get_int_32 (png_get_int_32)
-# endif
-#endif
-
-/*******************************************************************************
- * SIMPLIFIED API
- *******************************************************************************
- *
- * Please read the documentation in libpng-manual.txt (TODO: write said
- * documentation) if you don't understand what follows.
- *
- * The simplified API hides the details of both libpng and the PNG file format
- * itself. It allows PNG files to be read into a very limited number of
- * in-memory bitmap formats or to be written from the same formats. If these
- * formats do not accomodate your needs then you can, and should, use the more
- * sophisticated APIs above - these support a wide variety of in-memory formats
- * and a wide variety of sophisticated transformations to those formats as well
- * as a wide variety of APIs to manipulate ancillary information.
- *
- * To read a PNG file using the simplified API:
- *
- * 1) Declare a 'png_image' structure (see below) on the stack and set the
- * version field to PNG_IMAGE_VERSION.
- * 2) Call the appropriate png_image_begin_read... function.
- * 3) Set the png_image 'format' member to the required sample format.
- * 4) Allocate a buffer for the image and, if required, the color-map.
- * 5) Call png_image_finish_read to read the image and, if required, the
- * color-map into your buffers.
- *
- * There are no restrictions on the format of the PNG input itself; all valid
- * color types, bit depths, and interlace methods are acceptable, and the
- * input image is transformed as necessary to the requested in-memory format
- * during the png_image_finish_read() step. The only caveat is that if you
- * request a color-mapped image from a PNG that is full-color or makes
- * complex use of an alpha channel the transformation is extremely lossy and the
- * result may look terrible.
- *
- * To write a PNG file using the simplified API:
- *
- * 1) Declare a 'png_image' structure on the stack and memset() it to all zero.
- * 2) Initialize the members of the structure that describe the image, setting
- * the 'format' member to the format of the image samples.
- * 3) Call the appropriate png_image_write... function with a pointer to the
- * image and, if necessary, the color-map to write the PNG data.
- *
- * png_image is a structure that describes the in-memory format of an image
- * when it is being read or defines the in-memory format of an image that you
- * need to write:
- */
-#define PNG_IMAGE_VERSION 1
-
-typedef struct png_control *png_controlp;
-typedef struct
-{
- png_controlp opaque; /* Initialize to NULL, free with png_image_free */
- png_uint_32 version; /* Set to PNG_IMAGE_VERSION */
- png_uint_32 width; /* Image width in pixels (columns) */
- png_uint_32 height; /* Image height in pixels (rows) */
- png_uint_32 format; /* Image format as defined below */
- png_uint_32 flags; /* A bit mask containing informational flags */
- png_uint_32 colormap_entries;
- /* Number of entries in the color-map */
-
- /* In the event of an error or warning the following field will be set to a
- * non-zero value and the 'message' field will contain a '\0' terminated
- * string with the libpng error or warning message. If both warnings and
- * an error were encountered, only the error is recorded. If there
- * are multiple warnings, only the first one is recorded.
- *
- * The upper 30 bits of this value are reserved, the low two bits contain
- * a value as follows:
- */
-# define PNG_IMAGE_WARNING 1
-# define PNG_IMAGE_ERROR 2
- /*
- * The result is a two bit code such that a value more than 1 indicates
- * a failure in the API just called:
- *
- * 0 - no warning or error
- * 1 - warning
- * 2 - error
- * 3 - error preceded by warning
- */
-# define PNG_IMAGE_FAILED(png_cntrl) ((((png_cntrl).warning_or_error)&0x03)>1)
-
- png_uint_32 warning_or_error;
-
- char message[64];
-} png_image, *png_imagep;
-
-/* The samples of the image have one to four channels whose components have
- * original values in the range 0 to 1.0:
- *
- * 1: A single gray or luminance channel (G).
- * 2: A gray/luminance channel and an alpha channel (GA).
- * 3: Three red, green, blue color channels (RGB).
- * 4: Three color channels and an alpha channel (RGBA).
- *
- * The components are encoded in one of two ways:
- *
- * a) As a small integer, value 0..255, contained in a single byte. For the
- * alpha channel the original value is simply value/255. For the color or
- * luminance channels the value is encoded according to the sRGB specification
- * and matches the 8-bit format expected by typical display devices.
- *
- * The color/gray channels are not scaled (pre-multiplied) by the alpha
- * channel and are suitable for passing to color management software.
- *
- * b) As a value in the range 0..65535, contained in a 2-byte integer. All
- * channels can be converted to the original value by dividing by 65535; all
- * channels are linear. Color channels use the RGB encoding (RGB end-points) of
- * the sRGB specification. This encoding is identified by the
- * PNG_FORMAT_FLAG_LINEAR flag below.
- *
- * When the simplified API needs to convert between sRGB and linear colorspaces,
- * the actual sRGB transfer curve defined in the sRGB specification (see the
- * article at http://en.wikipedia.org/wiki/SRGB) is used, not the gamma=1/2.2
- * approximation used elsewhere in libpng.
- *
- * When an alpha channel is present it is expected to denote pixel coverage
- * of the color or luminance channels and is returned as an associated alpha
- * channel: the color/gray channels are scaled (pre-multiplied) by the alpha
- * value.
- *
- * The samples are either contained directly in the image data, between 1 and 8
- * bytes per pixel according to the encoding, or are held in a color-map indexed
- * by bytes in the image data. In the case of a color-map the color-map entries
- * are individual samples, encoded as above, and the image data has one byte per
- * pixel to select the relevant sample from the color-map.
- */
-
-/* PNG_FORMAT_*
- *
- * #defines to be used in png_image::format. Each #define identifies a
- * particular layout of sample data and, if present, alpha values. There are
- * separate defines for each of the two component encodings.
- *
- * A format is built up using single bit flag values. All combinations are
- * valid. Formats can be built up from the flag values or you can use one of
- * the predefined values below. When testing formats always use the FORMAT_FLAG
- * macros to test for individual features - future versions of the library may
- * add new flags.
- *
- * When reading or writing color-mapped images the format should be set to the
- * format of the entries in the color-map then png_image_{read,write}_colormap
- * called to read or write the color-map and set the format correctly for the
- * image data. Do not set the PNG_FORMAT_FLAG_COLORMAP bit directly!
- *
- * NOTE: libpng can be built with particular features disabled, if you see
- * compiler errors because the definition of one of the following flags has been
- * compiled out it is because libpng does not have the required support. It is
- * possible, however, for the libpng configuration to enable the format on just
- * read or just write; in that case you may see an error at run time. You can
- * guard against this by checking for the definition of the appropriate
- * "_SUPPORTED" macro, one of:
- *
- * PNG_SIMPLIFIED_{READ,WRITE}_{BGR,AFIRST}_SUPPORTED
- */
-#define PNG_FORMAT_FLAG_ALPHA 0x01U /* format with an alpha channel */
-#define PNG_FORMAT_FLAG_COLOR 0x02U /* color format: otherwise grayscale */
-#define PNG_FORMAT_FLAG_LINEAR 0x04U /* 2 byte channels else 1 byte */
-#define PNG_FORMAT_FLAG_COLORMAP 0x08U /* image data is color-mapped */
-
-#ifdef PNG_FORMAT_BGR_SUPPORTED
-# define PNG_FORMAT_FLAG_BGR 0x10U /* BGR colors, else order is RGB */
-#endif
-
-#ifdef PNG_FORMAT_AFIRST_SUPPORTED
-# define PNG_FORMAT_FLAG_AFIRST 0x20U /* alpha channel comes first */
-#endif
-
-/* Commonly used formats have predefined macros.
- *
- * First the single byte (sRGB) formats:
- */
-#define PNG_FORMAT_GRAY 0
-#define PNG_FORMAT_GA PNG_FORMAT_FLAG_ALPHA
-#define PNG_FORMAT_AG (PNG_FORMAT_GA|PNG_FORMAT_FLAG_AFIRST)
-#define PNG_FORMAT_RGB PNG_FORMAT_FLAG_COLOR
-#define PNG_FORMAT_BGR (PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_BGR)
-#define PNG_FORMAT_RGBA (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_ALPHA)
-#define PNG_FORMAT_ARGB (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_AFIRST)
-#define PNG_FORMAT_BGRA (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_ALPHA)
-#define PNG_FORMAT_ABGR (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_AFIRST)
-
-/* Then the linear 2-byte formats. When naming these "Y" is used to
- * indicate a luminance (gray) channel.
- */
-#define PNG_FORMAT_LINEAR_Y PNG_FORMAT_FLAG_LINEAR
-#define PNG_FORMAT_LINEAR_Y_ALPHA (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_ALPHA)
-#define PNG_FORMAT_LINEAR_RGB (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR)
-#define PNG_FORMAT_LINEAR_RGB_ALPHA \
- (PNG_FORMAT_FLAG_LINEAR|PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_ALPHA)
-
-/* With color-mapped formats the image data is one byte for each pixel, the byte
- * is an index into the color-map which is formatted as above. To obtain a
- * color-mapped format it is sufficient just to add the PNG_FOMAT_FLAG_COLORMAP
- * to one of the above definitions, or you can use one of the definitions below.
- */
-#define PNG_FORMAT_RGB_COLORMAP (PNG_FORMAT_RGB|PNG_FORMAT_FLAG_COLORMAP)
-#define PNG_FORMAT_BGR_COLORMAP (PNG_FORMAT_BGR|PNG_FORMAT_FLAG_COLORMAP)
-#define PNG_FORMAT_RGBA_COLORMAP (PNG_FORMAT_RGBA|PNG_FORMAT_FLAG_COLORMAP)
-#define PNG_FORMAT_ARGB_COLORMAP (PNG_FORMAT_ARGB|PNG_FORMAT_FLAG_COLORMAP)
-#define PNG_FORMAT_BGRA_COLORMAP (PNG_FORMAT_BGRA|PNG_FORMAT_FLAG_COLORMAP)
-#define PNG_FORMAT_ABGR_COLORMAP (PNG_FORMAT_ABGR|PNG_FORMAT_FLAG_COLORMAP)
-
-/* PNG_IMAGE macros
- *
- * These are convenience macros to derive information from a png_image
- * structure. The PNG_IMAGE_SAMPLE_ macros return values appropriate to the
- * actual image sample values - either the entries in the color-map or the
- * pixels in the image. The PNG_IMAGE_PIXEL_ macros return corresponding values
- * for the pixels and will always return 1 for color-mapped formats. The
- * remaining macros return information about the rows in the image and the
- * complete image.
- *
- * NOTE: All the macros that take a png_image::format parameter are compile time
- * constants if the format parameter is, itself, a constant. Therefore these
- * macros can be used in array declarations and case labels where required.
- * Similarly the macros are also pre-processor constants (sizeof is not used) so
- * they can be used in #if tests.
- *
- * First the information about the samples.
- */
-#define PNG_IMAGE_SAMPLE_CHANNELS(fmt)\
- (((fmt)&(PNG_FORMAT_FLAG_COLOR|PNG_FORMAT_FLAG_ALPHA))+1)
- /* Return the total number of channels in a given format: 1..4 */
-
-#define PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt)\
- ((((fmt) & PNG_FORMAT_FLAG_LINEAR) >> 2)+1)
- /* Return the size in bytes of a single component of a pixel or color-map
- * entry (as appropriate) in the image: 1 or 2.
- */
-
-#define PNG_IMAGE_SAMPLE_SIZE(fmt)\
- (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * PNG_IMAGE_SAMPLE_COMPONENT_SIZE(fmt))
- /* This is the size of the sample data for one sample. If the image is
- * color-mapped it is the size of one color-map entry (and image pixels are
- * one byte in size), otherwise it is the size of one image pixel.
- */
-
-#define PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(fmt)\
- (PNG_IMAGE_SAMPLE_CHANNELS(fmt) * 256)
- /* The maximum size of the color-map required by the format expressed in a
- * count of components. This can be used to compile-time allocate a
- * color-map:
- *
- * png_uint_16 colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(linear_fmt)];
- *
- * png_byte colormap[PNG_IMAGE_MAXIMUM_COLORMAP_COMPONENTS(sRGB_fmt)];
- *
- * Alternatively use the PNG_IMAGE_COLORMAP_SIZE macro below to use the
- * information from one of the png_image_begin_read_ APIs and dynamically
- * allocate the required memory.
- */
-
-/* Corresponding information about the pixels */
-#define PNG_IMAGE_PIXEL_(test,fmt)\
- (((fmt)&PNG_FORMAT_FLAG_COLORMAP)?1:test(fmt))
-
-#define PNG_IMAGE_PIXEL_CHANNELS(fmt)\
- PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_CHANNELS,fmt)
- /* The number of separate channels (components) in a pixel; 1 for a
- * color-mapped image.
- */
-
-#define PNG_IMAGE_PIXEL_COMPONENT_SIZE(fmt)\
- PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_COMPONENT_SIZE,fmt)
- /* The size, in bytes, of each component in a pixel; 1 for a color-mapped
- * image.
- */
-
-#define PNG_IMAGE_PIXEL_SIZE(fmt) PNG_IMAGE_PIXEL_(PNG_IMAGE_SAMPLE_SIZE,fmt)
- /* The size, in bytes, of a complete pixel; 1 for a color-mapped image. */
-
-/* Information about the whole row, or whole image */
-#define PNG_IMAGE_ROW_STRIDE(image)\
- (PNG_IMAGE_PIXEL_CHANNELS((image).format) * (image).width)
- /* Return the total number of components in a single row of the image; this
- * is the minimum 'row stride', the minimum count of components between each
- * row. For a color-mapped image this is the minimum number of bytes in a
- * row.
- */
-
-#define PNG_IMAGE_BUFFER_SIZE(image, row_stride)\
- (PNG_IMAGE_PIXEL_COMPONENT_SIZE((image).format)*(image).height*(row_stride))
- /* Return the size, in bytes, of an image buffer given a png_image and a row
- * stride - the number of components to leave space for in each row.
- */
-
-#define PNG_IMAGE_SIZE(image)\
- PNG_IMAGE_BUFFER_SIZE(image, PNG_IMAGE_ROW_STRIDE(image))
- /* Return the size, in bytes, of the image in memory given just a png_image;
- * the row stride is the minimum stride required for the image.
- */
-
-#define PNG_IMAGE_COLORMAP_SIZE(image)\
- (PNG_IMAGE_SAMPLE_SIZE((image).format) * (image).colormap_entries)
- /* Return the size, in bytes, of the color-map of this image. If the image
- * format is not a color-map format this will return a size sufficient for
- * 256 entries in the given format; check PNG_FORMAT_FLAG_COLORMAP if
- * you don't want to allocate a color-map in this case.
- */
-
-/* PNG_IMAGE_FLAG_*
- *
- * Flags containing additional information about the image are held in the
- * 'flags' field of png_image.
- */
-#define PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB 0x01
- /* This indicates the the RGB values of the in-memory bitmap do not
- * correspond to the red, green and blue end-points defined by sRGB.
- */
-
-#define PNG_IMAGE_FLAG_FAST 0x02
- /* On write emphasise speed over compression; the resultant PNG file will be
- * larger but will be produced significantly faster, particular for large
- * images. Do not use this option for images which will be distributed, only
- * used it when producing intermediate files that will be read back in
- * repeatedly. For a typical 24-bit image the option will double the read
- * speed at the cost of increasing the image size by 25%, however for many
- * more compressible images the PNG file can be 10 times larger with only a
- * slight speed gain.
- */
-
-#define PNG_IMAGE_FLAG_16BIT_sRGB 0x04
- /* On read if the image is a 16-bit per component image and there is no gAMA
- * or sRGB chunk assume that the components are sRGB encoded. Notice that
- * images output by the simplified API always have gamma information; setting
- * this flag only affects the interpretation of 16-bit images from an
- * external source. It is recommended that the application expose this flag
- * to the user; the user can normally easily recognize the difference between
- * linear and sRGB encoding. This flag has no effect on write - the data
- * passed to the write APIs must have the correct encoding (as defined
- * above.)
- *
- * If the flag is not set (the default) input 16-bit per component data is
- * assumed to be linear.
- *
- * NOTE: the flag can only be set after the png_image_begin_read_ call,
- * because that call initializes the 'flags' field.
- */
-
-#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
-/* READ APIs
- * ---------
- *
- * The png_image passed to the read APIs must have been initialized by setting
- * the png_controlp field 'opaque' to NULL (or, safer, memset the whole thing.)
- */
-#ifdef PNG_STDIO_SUPPORTED
-PNG_EXPORT(234, int, png_image_begin_read_from_file, (png_imagep image,
- const char *file_name));
- /* The named file is opened for read and the image header is filled in
- * from the PNG header in the file.
- */
-
-PNG_EXPORT(235, int, png_image_begin_read_from_stdio, (png_imagep image,
- FILE* file));
- /* The PNG header is read from the stdio FILE object. */
-#endif /* PNG_STDIO_SUPPORTED */
-
-PNG_EXPORT(236, int, png_image_begin_read_from_memory, (png_imagep image,
- png_const_voidp memory, png_size_t size));
- /* The PNG header is read from the given memory buffer. */
-
-PNG_EXPORT(237, int, png_image_finish_read, (png_imagep image,
- png_const_colorp background, void *buffer, png_int_32 row_stride,
- void *colormap));
- /* Finish reading the image into the supplied buffer and clean up the
- * png_image structure.
- *
- * row_stride is the step, in byte or 2-byte units as appropriate,
- * between adjacent rows. A positive stride indicates that the top-most row
- * is first in the buffer - the normal top-down arrangement. A negative
- * stride indicates that the bottom-most row is first in the buffer.
- *
- * background need only be supplied if an alpha channel must be removed from
- * a png_byte format and the removal is to be done by compositing on a solid
- * color; otherwise it may be NULL and any composition will be done directly
- * onto the buffer. The value is an sRGB color to use for the background,
- * for grayscale output the green channel is used.
- *
- * background must be supplied when an alpha channel must be removed from a
- * single byte color-mapped output format, in other words if:
- *
- * 1) The original format from png_image_begin_read_from_* had
- * PNG_FORMAT_FLAG_ALPHA set.
- * 2) The format set by the application does not.
- * 3) The format set by the application has PNG_FORMAT_FLAG_COLORMAP set and
- * PNG_FORMAT_FLAG_LINEAR *not* set.
- *
- * For linear output removing the alpha channel is always done by compositing
- * on black and background is ignored.
- *
- * colormap must be supplied when PNG_FORMAT_FLAG_COLORMAP is set. It must
- * be at least the size (in bytes) returned by PNG_IMAGE_COLORMAP_SIZE.
- * image->colormap_entries will be updated to the actual number of entries
- * written to the colormap; this may be less than the original value.
- */
-
-PNG_EXPORT(238, void, png_image_free, (png_imagep image));
- /* Free any data allocated by libpng in image->opaque, setting the pointer to
- * NULL. May be called at any time after the structure is initialized.
- */
-#endif /* PNG_SIMPLIFIED_READ_SUPPORTED */
-
-#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
-#ifdef PNG_STDIO_SUPPORTED
-/* WRITE APIS
- * ----------
- * For write you must initialize a png_image structure to describe the image to
- * be written. To do this use memset to set the whole structure to 0 then
- * initialize fields describing your image.
- *
- * version: must be set to PNG_IMAGE_VERSION
- * opaque: must be initialized to NULL
- * width: image width in pixels
- * height: image height in rows
- * format: the format of the data (image and color-map) you wish to write
- * flags: set to 0 unless one of the defined flags applies; set
- * PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB for color format images where the RGB
- * values do not correspond to the colors in sRGB.
- * colormap_entries: set to the number of entries in the color-map (0 to 256)
- */
-PNG_EXPORT(239, int, png_image_write_to_file, (png_imagep image,
- const char *file, int convert_to_8bit, const void *buffer,
- png_int_32 row_stride, const void *colormap));
- /* Write the image to the named file. */
-
-PNG_EXPORT(240, int, png_image_write_to_stdio, (png_imagep image, FILE *file,
- int convert_to_8_bit, const void *buffer, png_int_32 row_stride,
- const void *colormap));
- /* Write the image to the given (FILE*). */
-
-/* With both write APIs if image is in one of the linear formats with 16-bit
- * data then setting convert_to_8_bit will cause the output to be an 8-bit PNG
- * gamma encoded according to the sRGB specification, otherwise a 16-bit linear
- * encoded PNG file is written.
- *
- * With color-mapped data formats the colormap parameter point to a color-map
- * with at least image->colormap_entries encoded in the specified format. If
- * the format is linear the written PNG color-map will be converted to sRGB
- * regardless of the convert_to_8_bit flag.
- *
- * With all APIs row_stride is handled as in the read APIs - it is the spacing
- * from one row to the next in component sized units (1 or 2 bytes) and if
- * negative indicates a bottom-up row layout in the buffer.
- *
- * Note that the write API does not support interlacing or sub-8-bit pixels.
- */
-#endif /* PNG_STDIO_SUPPORTED */
-#endif /* PNG_SIMPLIFIED_WRITE_SUPPORTED */
-/*******************************************************************************
- * END OF SIMPLIFIED API
- ******************************************************************************/
-
-#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
-PNG_EXPORT(242, void, png_set_check_for_invalid_index,
- (png_structrp png_ptr, int allowed));
-# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
-PNG_EXPORT(243, int, png_get_palette_max, (png_const_structp png_ptr,
- png_const_infop info_ptr));
-# endif
-#endif /* CHECK_FOR_INVALID_INDEX */
-
-/*******************************************************************************
- * IMPLEMENTATION OPTIONS
- *******************************************************************************
- *
- * Support for arbitrary implementation-specific optimizations. The API allows
- * particular options to be turned on or off. 'Option' is the number of the
- * option and 'onoff' is 0 (off) or non-0 (on). The value returned is given
- * by the PNG_OPTION_ defines below.
- *
- * HARDWARE: normally hardware capabilites, such as the Intel SSE instructions,
- * are detected at run time, however sometimes it may be impossible
- * to do this in user mode, in which case it is necessary to discover
- * the capabilities in an OS specific way. Such capabilities are
- * listed here when libpng has support for them and must be turned
- * ON by the application if present.
- *
- * SOFTWARE: sometimes software optimizations actually result in performance
- * decrease on some architectures or systems, or with some sets of
- * PNG images. 'Software' options allow such optimizations to be
- * selected at run time.
- */
-#ifdef PNG_SET_OPTION_SUPPORTED
-#ifdef PNG_ARM_NEON_API_SUPPORTED
-# define PNG_ARM_NEON 0 /* HARDWARE: ARM Neon SIMD instructions supported */
-#endif
-#define PNG_MAXIMUM_INFLATE_WINDOW 2 /* SOFTWARE: force maximum window */
-#define PNG_OPTION_NEXT 4 /* Next option - numbers must be even */
-
-/* Return values: NOTE: there are four values and 'off' is *not* zero */
-#define PNG_OPTION_UNSET 0 /* Unset - defaults to off */
-#define PNG_OPTION_INVALID 1 /* Option number out of range */
-#define PNG_OPTION_OFF 2
-#define PNG_OPTION_ON 3
-
-PNG_EXPORT(244, int, png_set_option, (png_structrp png_ptr, int option,
- int onoff));
-#endif
-
-/*******************************************************************************
- * END OF HARDWARE OPTIONS
- ******************************************************************************/
-
-/* Maintainer: Put new public prototypes here ^, in libpng.3, and project
- * defs, scripts/pnglibconf.h, and scripts/pnglibconf.h.prebuilt
- */
-
-/* The last ordinal number (this is the *last* one already used; the next
- * one to use is one more than this.) Maintainer, remember to add an entry to
- * scripts/symbols.def as well.
- */
-#ifdef PNG_EXPORT_LAST_ORDINAL
- PNG_EXPORT_LAST_ORDINAL(244);
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* PNG_VERSION_INFO_ONLY */
-/* Do not put anything past this line */
-#endif /* PNG_H */
+++ /dev/null
-
-/* pngconf.h - machine configurable file for libpng
- *
- * libpng version 1.6.3 - July 18, 2013
- *
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- */
-
-/* Any machine specific code is near the front of this file, so if you
- * are configuring libpng for a machine, you may want to read the section
- * starting here down to where it starts to typedef png_color, png_text,
- * and png_info.
- */
-
-#ifndef PNGCONF_H
-#define PNGCONF_H
-
-/* To do: Do all of this in scripts/pnglibconf.dfa */
-#ifdef PNG_SAFE_LIMITS_SUPPORTED
-# ifdef PNG_USER_WIDTH_MAX
-# undef PNG_USER_WIDTH_MAX
-# define PNG_USER_WIDTH_MAX 1000000L
-# endif
-# ifdef PNG_USER_HEIGHT_MAX
-# undef PNG_USER_HEIGHT_MAX
-# define PNG_USER_HEIGHT_MAX 1000000L
-# endif
-# ifdef PNG_USER_CHUNK_MALLOC_MAX
-# undef PNG_USER_CHUNK_MALLOC_MAX
-# define PNG_USER_CHUNK_MALLOC_MAX 4000000L
-# endif
-# ifdef PNG_USER_CHUNK_CACHE_MAX
-# undef PNG_USER_CHUNK_CACHE_MAX
-# define PNG_USER_CHUNK_CACHE_MAX 128
-# endif
-#endif
-
-#ifndef PNG_BUILDING_SYMBOL_TABLE /* else includes may cause problems */
-
-/* From libpng 1.6.0 libpng requires an ANSI X3.159-1989 ("ISOC90") compliant C
- * compiler for correct compilation. The following header files are required by
- * the standard. If your compiler doesn't provide these header files, or they
- * do not match the standard, you will need to provide/improve them.
- */
-#include <limits.h>
-#include <stddef.h>
-
-/* Library header files. These header files are all defined by ISOC90; libpng
- * expects conformant implementations, however, an ISOC90 conformant system need
- * not provide these header files if the functionality cannot be implemented.
- * In this case it will be necessary to disable the relevant parts of libpng in
- * the build of pnglibconf.h.
- *
- * Prior to 1.6.0 string.h was included here; the API changes in 1.6.0 to not
- * include this unnecessary header file.
- */
-
-#ifdef PNG_STDIO_SUPPORTED
- /* Required for the definition of FILE: */
-# include <stdio.h>
-#endif
-
-#ifdef PNG_SETJMP_SUPPORTED
- /* Required for the definition of jmp_buf and the declaration of longjmp: */
-# include <setjmp.h>
-#endif
-
-#ifdef PNG_CONVERT_tIME_SUPPORTED
- /* Required for struct tm: */
-# include <time.h>
-#endif
-
-#endif /* PNG_BUILDING_SYMBOL_TABLE */
-
-/* Prior to 1.6.0 it was possible to turn off 'const' in declarations using
- * PNG_NO_CONST; this is no longer supported except for data declarations which
- * apparently still cause problems in 2011 on some compilers.
- */
-#define PNG_CONST const /* backward compatibility only */
-
-/* This controls optimization of the reading of 16 and 32 bit values
- * from PNG files. It can be set on a per-app-file basis - it
- * just changes whether a macro is used when the function is called.
- * The library builder sets the default; if read functions are not
- * built into the library the macro implementation is forced on.
- */
-#ifndef PNG_READ_INT_FUNCTIONS_SUPPORTED
-# define PNG_USE_READ_MACROS
-#endif
-#if !defined(PNG_NO_USE_READ_MACROS) && !defined(PNG_USE_READ_MACROS)
-# if PNG_DEFAULT_READ_MACROS
-# define PNG_USE_READ_MACROS
-# endif
-#endif
-
-/* COMPILER SPECIFIC OPTIONS.
- *
- * These options are provided so that a variety of difficult compilers
- * can be used. Some are fixed at build time (e.g. PNG_API_RULE
- * below) but still have compiler specific implementations, others
- * may be changed on a per-file basis when compiling against libpng.
- */
-
-/* The PNGARG macro was used in versions of libpng prior to 1.6.0 to protect
- * against legacy (pre ISOC90) compilers that did not understand function
- * prototypes. It is not required for modern C compilers.
- */
-#ifndef PNGARG
-# define PNGARG(arglist) arglist
-#endif
-
-/* Function calling conventions.
- * =============================
- * Normally it is not necessary to specify to the compiler how to call
- * a function - it just does it - however on x86 systems derived from
- * Microsoft and Borland C compilers ('IBM PC', 'DOS', 'Windows' systems
- * and some others) there are multiple ways to call a function and the
- * default can be changed on the compiler command line. For this reason
- * libpng specifies the calling convention of every exported function and
- * every function called via a user supplied function pointer. This is
- * done in this file by defining the following macros:
- *
- * PNGAPI Calling convention for exported functions.
- * PNGCBAPI Calling convention for user provided (callback) functions.
- * PNGCAPI Calling convention used by the ANSI-C library (required
- * for longjmp callbacks and sometimes used internally to
- * specify the calling convention for zlib).
- *
- * These macros should never be overridden. If it is necessary to
- * change calling convention in a private build this can be done
- * by setting PNG_API_RULE (which defaults to 0) to one of the values
- * below to select the correct 'API' variants.
- *
- * PNG_API_RULE=0 Use PNGCAPI - the 'C' calling convention - throughout.
- * This is correct in every known environment.
- * PNG_API_RULE=1 Use the operating system convention for PNGAPI and
- * the 'C' calling convention (from PNGCAPI) for
- * callbacks (PNGCBAPI). This is no longer required
- * in any known environment - if it has to be used
- * please post an explanation of the problem to the
- * libpng mailing list.
- *
- * These cases only differ if the operating system does not use the C
- * calling convention, at present this just means the above cases
- * (x86 DOS/Windows sytems) and, even then, this does not apply to
- * Cygwin running on those systems.
- *
- * Note that the value must be defined in pnglibconf.h so that what
- * the application uses to call the library matches the conventions
- * set when building the library.
- */
-
-/* Symbol export
- * =============
- * When building a shared library it is almost always necessary to tell
- * the compiler which symbols to export. The png.h macro 'PNG_EXPORT'
- * is used to mark the symbols. On some systems these symbols can be
- * extracted at link time and need no special processing by the compiler,
- * on other systems the symbols are flagged by the compiler and just
- * the declaration requires a special tag applied (unfortunately) in a
- * compiler dependent way. Some systems can do either.
- *
- * A small number of older systems also require a symbol from a DLL to
- * be flagged to the program that calls it. This is a problem because
- * we do not know in the header file included by application code that
- * the symbol will come from a shared library, as opposed to a statically
- * linked one. For this reason the application must tell us by setting
- * the magic flag PNG_USE_DLL to turn on the special processing before
- * it includes png.h.
- *
- * Four additional macros are used to make this happen:
- *
- * PNG_IMPEXP The magic (if any) to cause a symbol to be exported from
- * the build or imported if PNG_USE_DLL is set - compiler
- * and system specific.
- *
- * PNG_EXPORT_TYPE(type) A macro that pre or appends PNG_IMPEXP to
- * 'type', compiler specific.
- *
- * PNG_DLL_EXPORT Set to the magic to use during a libpng build to
- * make a symbol exported from the DLL. Not used in the
- * public header files; see pngpriv.h for how it is used
- * in the libpng build.
- *
- * PNG_DLL_IMPORT Set to the magic to force the libpng symbols to come
- * from a DLL - used to define PNG_IMPEXP when
- * PNG_USE_DLL is set.
- */
-
-/* System specific discovery.
- * ==========================
- * This code is used at build time to find PNG_IMPEXP, the API settings
- * and PNG_EXPORT_TYPE(), it may also set a macro to indicate the DLL
- * import processing is possible. On Windows systems it also sets
- * compiler-specific macros to the values required to change the calling
- * conventions of the various functions.
- */
-#if defined(_Windows) || defined(_WINDOWS) || defined(WIN32) ||\
- defined(_WIN32) || defined(__WIN32__) || defined(__CYGWIN__)
- /* Windows system (DOS doesn't support DLLs). Includes builds under Cygwin or
- * MinGW on any architecture currently supported by Windows. Also includes
- * Watcom builds but these need special treatment because they are not
- * compatible with GCC or Visual C because of different calling conventions.
- */
-# if PNG_API_RULE == 2
- /* If this line results in an error, either because __watcall is not
- * understood or because of a redefine just below you cannot use *this*
- * build of the library with the compiler you are using. *This* build was
- * build using Watcom and applications must also be built using Watcom!
- */
-# define PNGCAPI __watcall
-# endif
-
-# if defined(__GNUC__) || (defined(_MSC_VER) && (_MSC_VER >= 800))
-# define PNGCAPI __cdecl
-# if PNG_API_RULE == 1
- /* If this line results in an error __stdcall is not understood and
- * PNG_API_RULE should not have been set to '1'.
- */
-# define PNGAPI __stdcall
-# endif
-# else
- /* An older compiler, or one not detected (erroneously) above,
- * if necessary override on the command line to get the correct
- * variants for the compiler.
- */
-# ifndef PNGCAPI
-# define PNGCAPI _cdecl
-# endif
-# if PNG_API_RULE == 1 && !defined(PNGAPI)
-# define PNGAPI _stdcall
-# endif
-# endif /* compiler/api */
-
- /* NOTE: PNGCBAPI always defaults to PNGCAPI. */
-
-# if defined(PNGAPI) && !defined(PNG_USER_PRIVATEBUILD)
-# error "PNG_USER_PRIVATEBUILD must be defined if PNGAPI is changed"
-# endif
-
-# if (defined(_MSC_VER) && _MSC_VER < 800) ||\
- (defined(__BORLANDC__) && __BORLANDC__ < 0x500)
- /* older Borland and MSC
- * compilers used '__export' and required this to be after
- * the type.
- */
-# ifndef PNG_EXPORT_TYPE
-# define PNG_EXPORT_TYPE(type) type PNG_IMPEXP
-# endif
-# define PNG_DLL_EXPORT __export
-# else /* newer compiler */
-# define PNG_DLL_EXPORT __declspec(dllexport)
-# ifndef PNG_DLL_IMPORT
-# define PNG_DLL_IMPORT __declspec(dllimport)
-# endif
-# endif /* compiler */
-
-#else /* !Windows */
-# if (defined(__IBMC__) || defined(__IBMCPP__)) && defined(__OS2__)
-# define PNGAPI _System
-# else /* !Windows/x86 && !OS/2 */
- /* Use the defaults, or define PNG*API on the command line (but
- * this will have to be done for every compile!)
- */
-# endif /* other system, !OS/2 */
-#endif /* !Windows/x86 */
-
-/* Now do all the defaulting . */
-#ifndef PNGCAPI
-# define PNGCAPI
-#endif
-#ifndef PNGCBAPI
-# define PNGCBAPI PNGCAPI
-#endif
-#ifndef PNGAPI
-# define PNGAPI PNGCAPI
-#endif
-
-/* PNG_IMPEXP may be set on the compilation system command line or (if not set)
- * then in an internal header file when building the library, otherwise (when
- * using the library) it is set here.
- */
-#ifndef PNG_IMPEXP
-# if defined(PNG_USE_DLL) && defined(PNG_DLL_IMPORT)
- /* This forces use of a DLL, disallowing static linking */
-# define PNG_IMPEXP PNG_DLL_IMPORT
-# endif
-
-# ifndef PNG_IMPEXP
-# define PNG_IMPEXP
-# endif
-#endif
-
-/* In 1.5.2 the definition of PNG_FUNCTION has been changed to always treat
- * 'attributes' as a storage class - the attributes go at the start of the
- * function definition, and attributes are always appended regardless of the
- * compiler. This considerably simplifies these macros but may cause problems
- * if any compilers both need function attributes and fail to handle them as
- * a storage class (this is unlikely.)
- */
-#ifndef PNG_FUNCTION
-# define PNG_FUNCTION(type, name, args, attributes) attributes type name args
-#endif
-
-#ifndef PNG_EXPORT_TYPE
-# define PNG_EXPORT_TYPE(type) PNG_IMPEXP type
-#endif
-
- /* The ordinal value is only relevant when preprocessing png.h for symbol
- * table entries, so we discard it here. See the .dfn files in the
- * scripts directory.
- */
-#ifndef PNG_EXPORTA
-
-# define PNG_EXPORTA(ordinal, type, name, args, attributes)\
- PNG_FUNCTION(PNG_EXPORT_TYPE(type),(PNGAPI name),PNGARG(args), \
- extern attributes)
-#endif
-
-/* ANSI-C (C90) does not permit a macro to be invoked with an empty argument,
- * so make something non-empty to satisfy the requirement:
- */
-#define PNG_EMPTY /*empty list*/
-
-#define PNG_EXPORT(ordinal, type, name, args)\
- PNG_EXPORTA(ordinal, type, name, args, PNG_EMPTY)
-
-/* Use PNG_REMOVED to comment out a removed interface. */
-#ifndef PNG_REMOVED
-# define PNG_REMOVED(ordinal, type, name, args, attributes)
-#endif
-
-#ifndef PNG_CALLBACK
-# define PNG_CALLBACK(type, name, args) type (PNGCBAPI name) PNGARG(args)
-#endif
-
-/* Support for compiler specific function attributes. These are used
- * so that where compiler support is available incorrect use of API
- * functions in png.h will generate compiler warnings.
- *
- * Added at libpng-1.2.41.
- */
-
-#ifndef PNG_NO_PEDANTIC_WARNINGS
-# ifndef PNG_PEDANTIC_WARNINGS_SUPPORTED
-# define PNG_PEDANTIC_WARNINGS_SUPPORTED
-# endif
-#endif
-
-#ifdef PNG_PEDANTIC_WARNINGS_SUPPORTED
- /* Support for compiler specific function attributes. These are used
- * so that where compiler support is available, incorrect use of API
- * functions in png.h will generate compiler warnings. Added at libpng
- * version 1.2.41. Disabling these removes the warnings but may also produce
- * less efficient code.
- */
-# if defined(__GNUC__)
-# ifndef PNG_USE_RESULT
-# define PNG_USE_RESULT __attribute__((__warn_unused_result__))
-# endif
-# ifndef PNG_NORETURN
-# define PNG_NORETURN __attribute__((__noreturn__))
-# endif
-# if __GNUC__ >= 3
-# ifndef PNG_ALLOCATED
-# define PNG_ALLOCATED __attribute__((__malloc__))
-# endif
-# ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED __attribute__((__deprecated__))
-# endif
-# ifndef PNG_PRIVATE
-# if 0 /* Doesn't work so we use deprecated instead*/
-# define PNG_PRIVATE \
- __attribute__((warning("This function is not exported by libpng.")))
-# else
-# define PNG_PRIVATE \
- __attribute__((__deprecated__))
-# endif
-# endif
-# if ((__GNUC__ != 3) || !defined(__GNUC_MINOR__) || (__GNUC_MINOR__ >= 1))
-# ifndef PNG_RESTRICT
-# define PNG_RESTRICT __restrict
-# endif
-# endif /* __GNUC__ == 3.0 */
-# endif /* __GNUC__ >= 3 */
-
-# elif defined(_MSC_VER) && (_MSC_VER >= 1300)
-# ifndef PNG_USE_RESULT
-# define PNG_USE_RESULT /* not supported */
-# endif
-# ifndef PNG_NORETURN
-# define PNG_NORETURN __declspec(noreturn)
-# endif
-# ifndef PNG_ALLOCATED
-# if (_MSC_VER >= 1400)
-# define PNG_ALLOCATED __declspec(restrict)
-# endif
-# endif
-# ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED __declspec(deprecated)
-# endif
-# ifndef PNG_PRIVATE
-# define PNG_PRIVATE __declspec(deprecated)
-# endif
-# ifndef PNG_RESTRICT
-# if (_MSC_VER >= 1400)
-# define PNG_RESTRICT __restrict
-# endif
-# endif
-
-# elif defined(__WATCOMC__)
-# ifndef PNG_RESTRICT
-# define PNG_RESTRICT __restrict
-# endif
-# endif /* _MSC_VER */
-#endif /* PNG_PEDANTIC_WARNINGS */
-
-#ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED /* Use of this function is deprecated */
-#endif
-#ifndef PNG_USE_RESULT
-# define PNG_USE_RESULT /* The result of this function must be checked */
-#endif
-#ifndef PNG_NORETURN
-# define PNG_NORETURN /* This function does not return */
-#endif
-#ifndef PNG_ALLOCATED
-# define PNG_ALLOCATED /* The result of the function is new memory */
-#endif
-#ifndef PNG_PRIVATE
-# define PNG_PRIVATE /* This is a private libpng function */
-#endif
-#ifndef PNG_RESTRICT
-# define PNG_RESTRICT /* The C99 "restrict" feature */
-#endif
-#ifndef PNG_FP_EXPORT /* A floating point API. */
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-# define PNG_FP_EXPORT(ordinal, type, name, args)\
- PNG_EXPORT(ordinal, type, name, args);
-# else /* No floating point APIs */
-# define PNG_FP_EXPORT(ordinal, type, name, args)
-# endif
-#endif
-#ifndef PNG_FIXED_EXPORT /* A fixed point API. */
-# ifdef PNG_FIXED_POINT_SUPPORTED
-# define PNG_FIXED_EXPORT(ordinal, type, name, args)\
- PNG_EXPORT(ordinal, type, name, args);
-# else /* No fixed point APIs */
-# define PNG_FIXED_EXPORT(ordinal, type, name, args)
-# endif
-#endif
-
-#ifndef PNG_BUILDING_SYMBOL_TABLE
-/* Some typedefs to get us started. These should be safe on most of the common
- * platforms.
- *
- * png_uint_32 and png_int_32 may, currently, be larger than required to hold a
- * 32-bit value however this is not normally advisable.
- *
- * png_uint_16 and png_int_16 should always be two bytes in size - this is
- * verified at library build time.
- *
- * png_byte must always be one byte in size.
- *
- * The checks below use constants from limits.h, as defined by the ISOC90
- * standard.
- */
-#if CHAR_BIT == 8 && UCHAR_MAX == 255
- typedef unsigned char png_byte;
-#else
-# error "libpng requires 8 bit bytes"
-#endif
-
-#if INT_MIN == -32768 && INT_MAX == 32767
- typedef int png_int_16;
-#elif SHRT_MIN == -32768 && SHRT_MAX == 32767
- typedef short png_int_16;
-#else
-# error "libpng requires a signed 16 bit type"
-#endif
-
-#if UINT_MAX == 65535
- typedef unsigned int png_uint_16;
-#elif USHRT_MAX == 65535
- typedef unsigned short png_uint_16;
-#else
-# error "libpng requires an unsigned 16 bit type"
-#endif
-
-#if INT_MIN < -2147483646 && INT_MAX > 2147483646
- typedef int png_int_32;
-#elif LONG_MIN < -2147483646 && LONG_MAX > 2147483646
- typedef long int png_int_32;
-#else
-# error "libpng requires a signed 32 bit (or more) type"
-#endif
-
-#if UINT_MAX > 4294967294
- typedef unsigned int png_uint_32;
-#elif ULONG_MAX > 4294967294
- typedef unsigned long int png_uint_32;
-#else
-# error "libpng requires an unsigned 32 bit (or more) type"
-#endif
-
-/* Prior to 1.6.0 it was possible to disable the use of size_t, 1.6.0, however,
- * requires an ISOC90 compiler and relies on consistent behavior of sizeof.
- */
-typedef size_t png_size_t;
-typedef ptrdiff_t png_ptrdiff_t;
-
-/* libpng needs to know the maximum value of 'size_t' and this controls the
- * definition of png_alloc_size_t, below. This maximum value of size_t limits
- * but does not control the maximum allocations the library makes - there is
- * direct application control of this through png_set_user_limits().
- */
-#ifndef PNG_SMALL_SIZE_T
- /* Compiler specific tests for systems where size_t is known to be less than
- * 32 bits (some of these systems may no longer work because of the lack of
- * 'far' support; see above.)
- */
-# if (defined(__TURBOC__) && !defined(__FLAT__)) ||\
- (defined(_MSC_VER) && defined(MAXSEG_64K))
-# define PNG_SMALL_SIZE_T
-# endif
-#endif
-
-/* png_alloc_size_t is guaranteed to be no smaller than png_size_t, and no
- * smaller than png_uint_32. Casts from png_size_t or png_uint_32 to
- * png_alloc_size_t are not necessary; in fact, it is recommended not to use
- * them at all so that the compiler can complain when something turns out to be
- * problematic.
- *
- * Casts in the other direction (from png_alloc_size_t to png_size_t or
- * png_uint_32) should be explicitly applied; however, we do not expect to
- * encounter practical situations that require such conversions.
- *
- * PNG_SMALL_SIZE_T must be defined if the maximum value of size_t is less than
- * 4294967295 - i.e. less than the maximum value of png_uint_32.
- */
-#ifdef PNG_SMALL_SIZE_T
- typedef png_uint_32 png_alloc_size_t;
-#else
- typedef png_size_t png_alloc_size_t;
-#endif
-
-/* Prior to 1.6.0 libpng offered limited support for Microsoft C compiler
- * implementations of Intel CPU specific support of user-mode segmented address
- * spaces, where 16-bit pointers address more than 65536 bytes of memory using
- * separate 'segment' registers. The implementation requires two different
- * types of pointer (only one of which includes the segment value.)
- *
- * If required this support is available in version 1.2 of libpng and may be
- * available in versions through 1.5, although the correctness of the code has
- * not been verified recently.
- */
-
-/* Typedef for floating-point numbers that are converted to fixed-point with a
- * multiple of 100,000, e.g., gamma
- */
-typedef png_int_32 png_fixed_point;
-
-/* Add typedefs for pointers */
-typedef void * png_voidp;
-typedef const void * png_const_voidp;
-typedef png_byte * png_bytep;
-typedef const png_byte * png_const_bytep;
-typedef png_uint_32 * png_uint_32p;
-typedef const png_uint_32 * png_const_uint_32p;
-typedef png_int_32 * png_int_32p;
-typedef const png_int_32 * png_const_int_32p;
-typedef png_uint_16 * png_uint_16p;
-typedef const png_uint_16 * png_const_uint_16p;
-typedef png_int_16 * png_int_16p;
-typedef const png_int_16 * png_const_int_16p;
-typedef char * png_charp;
-typedef const char * png_const_charp;
-typedef png_fixed_point * png_fixed_point_p;
-typedef const png_fixed_point * png_const_fixed_point_p;
-typedef png_size_t * png_size_tp;
-typedef const png_size_t * png_const_size_tp;
-
-#ifdef PNG_STDIO_SUPPORTED
-typedef FILE * png_FILE_p;
-#endif
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-typedef double * png_doublep;
-typedef const double * png_const_doublep;
-#endif
-
-/* Pointers to pointers; i.e. arrays */
-typedef png_byte * * png_bytepp;
-typedef png_uint_32 * * png_uint_32pp;
-typedef png_int_32 * * png_int_32pp;
-typedef png_uint_16 * * png_uint_16pp;
-typedef png_int_16 * * png_int_16pp;
-typedef const char * * png_const_charpp;
-typedef char * * png_charpp;
-typedef png_fixed_point * * png_fixed_point_pp;
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-typedef double * * png_doublepp;
-#endif
-
-/* Pointers to pointers to pointers; i.e., pointer to array */
-typedef char * * * png_charppp;
-
-#endif /* PNG_BUILDING_SYMBOL_TABLE */
-
-#endif /* PNGCONF_H */
+++ /dev/null
-
-/* pngdebug.h - Debugging macros for libpng, also used in pngtest.c
- *
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.5.0 [January 6, 2011]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* Define PNG_DEBUG at compile time for debugging information. Higher
- * numbers for PNG_DEBUG mean more debugging information. This has
- * only been added since version 0.95 so it is not implemented throughout
- * libpng yet, but more support will be added as needed.
- *
- * png_debug[1-2]?(level, message ,arg{0-2})
- * Expands to a statement (either a simple expression or a compound
- * do..while(0) statement) that outputs a message with parameter
- * substitution if PNG_DEBUG is defined to 2 or more. If PNG_DEBUG
- * is undefined, 0 or 1 every png_debug expands to a simple expression
- * (actually ((void)0)).
- *
- * level: level of detail of message, starting at 0. A level 'n'
- * message is preceded by 'n' tab characters (not implemented
- * on Microsoft compilers unless PNG_DEBUG_FILE is also
- * defined, to allow debug DLL compilation with no standard IO).
- * message: a printf(3) style text string. A trailing '\n' is added
- * to the message.
- * arg: 0 to 2 arguments for printf(3) style substitution in message.
- */
-#ifndef PNGDEBUG_H
-#define PNGDEBUG_H
-/* These settings control the formatting of messages in png.c and pngerror.c */
-/* Moved to pngdebug.h at 1.5.0 */
-# ifndef PNG_LITERAL_SHARP
-# define PNG_LITERAL_SHARP 0x23
-# endif
-# ifndef PNG_LITERAL_LEFT_SQUARE_BRACKET
-# define PNG_LITERAL_LEFT_SQUARE_BRACKET 0x5b
-# endif
-# ifndef PNG_LITERAL_RIGHT_SQUARE_BRACKET
-# define PNG_LITERAL_RIGHT_SQUARE_BRACKET 0x5d
-# endif
-# ifndef PNG_STRING_NEWLINE
-# define PNG_STRING_NEWLINE "\n"
-# endif
-
-#ifdef PNG_DEBUG
-# if (PNG_DEBUG > 0)
-# if !defined(PNG_DEBUG_FILE) && defined(_MSC_VER)
-# include <crtdbg.h>
-# if (PNG_DEBUG > 1)
-# ifndef _DEBUG
-# define _DEBUG
-# endif
-# ifndef png_debug
-# define png_debug(l,m) _RPT0(_CRT_WARN,m PNG_STRING_NEWLINE)
-# endif
-# ifndef png_debug1
-# define png_debug1(l,m,p1) _RPT1(_CRT_WARN,m PNG_STRING_NEWLINE,p1)
-# endif
-# ifndef png_debug2
-# define png_debug2(l,m,p1,p2) \
- _RPT2(_CRT_WARN,m PNG_STRING_NEWLINE,p1,p2)
-# endif
-# endif
-# else /* PNG_DEBUG_FILE || !_MSC_VER */
-# ifndef PNG_STDIO_SUPPORTED
-# include <stdio.h> /* not included yet */
-# endif
-# ifndef PNG_DEBUG_FILE
-# define PNG_DEBUG_FILE stderr
-# endif /* PNG_DEBUG_FILE */
-
-# if (PNG_DEBUG > 1)
-/* Note: ["%s"m PNG_STRING_NEWLINE] probably does not work on
- * non-ISO compilers
- */
-# ifdef __STDC__
-# ifndef png_debug
-# define png_debug(l,m) \
- do { \
- int num_tabs=l; \
- fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":"")))); \
- } while (0)
-# endif
-# ifndef png_debug1
-# define png_debug1(l,m,p1) \
- do { \
- int num_tabs=l; \
- fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1); \
- } while (0)
-# endif
-# ifndef png_debug2
-# define png_debug2(l,m,p1,p2) \
- do { \
- int num_tabs=l; \
- fprintf(PNG_DEBUG_FILE,"%s"m PNG_STRING_NEWLINE,(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))),p1,p2); \
- } while (0)
-# endif
-# else /* __STDC __ */
-# ifndef png_debug
-# define png_debug(l,m) \
- do { \
- int num_tabs=l; \
- char format[256]; \
- snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
- m,PNG_STRING_NEWLINE); \
- fprintf(PNG_DEBUG_FILE,format); \
- } while (0)
-# endif
-# ifndef png_debug1
-# define png_debug1(l,m,p1) \
- do { \
- int num_tabs=l; \
- char format[256]; \
- snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
- m,PNG_STRING_NEWLINE); \
- fprintf(PNG_DEBUG_FILE,format,p1); \
- } while (0)
-# endif
-# ifndef png_debug2
-# define png_debug2(l,m,p1,p2) \
- do { \
- int num_tabs=l; \
- char format[256]; \
- snprintf(format,256,"%s%s%s",(num_tabs==1 ? "\t" : \
- (num_tabs==2 ? "\t\t":(num_tabs>2 ? "\t\t\t":""))), \
- m,PNG_STRING_NEWLINE); \
- fprintf(PNG_DEBUG_FILE,format,p1,p2); \
- } while (0)
-# endif
-# endif /* __STDC __ */
-# endif /* (PNG_DEBUG > 1) */
-
-# endif /* _MSC_VER */
-# endif /* (PNG_DEBUG > 0) */
-#endif /* PNG_DEBUG */
-#ifndef png_debug
-# define png_debug(l, m) ((void)0)
-#endif
-#ifndef png_debug1
-# define png_debug1(l, m, p1) ((void)0)
-#endif
-#ifndef png_debug2
-# define png_debug2(l, m, p1, p2) ((void)0)
-#endif
-#endif /* PNGDEBUG_H */
+++ /dev/null
-
-/* pngerror.c - stub functions for i/o and memory allocation
- *
- * Last changed in libpng 1.6.1 [March 28, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file provides a location for all error handling. Users who
- * need special error handling are expected to write replacement functions
- * and use png_set_error_fn() to use those functions. See the instructions
- * at each function.
- */
-
-#include "pngpriv.h"
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-
-static PNG_FUNCTION(void, png_default_error,PNGARG((png_const_structrp png_ptr,
- png_const_charp error_message)),PNG_NORETURN);
-
-#ifdef PNG_WARNINGS_SUPPORTED
-static void /* PRIVATE */
-png_default_warning PNGARG((png_const_structrp png_ptr,
- png_const_charp warning_message));
-#endif /* PNG_WARNINGS_SUPPORTED */
-
-/* This function is called whenever there is a fatal error. This function
- * should not be changed. If there is a need to handle errors differently,
- * you should supply a replacement error function and use png_set_error_fn()
- * to replace the error function at run-time.
- */
-#ifdef PNG_ERROR_TEXT_SUPPORTED
-PNG_FUNCTION(void,PNGAPI
-png_error,(png_const_structrp png_ptr, png_const_charp error_message),
- PNG_NORETURN)
-{
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- char msg[16];
- if (png_ptr != NULL)
- {
- if (png_ptr->flags&
- (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
- {
- if (*error_message == PNG_LITERAL_SHARP)
- {
- /* Strip "#nnnn " from beginning of error message. */
- int offset;
- for (offset = 1; offset<15; offset++)
- if (error_message[offset] == ' ')
- break;
-
- if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
- {
- int i;
- for (i = 0; i < offset - 1; i++)
- msg[i] = error_message[i + 1];
- msg[i - 1] = '\0';
- error_message = msg;
- }
-
- else
- error_message += offset;
- }
-
- else
- {
- if (png_ptr->flags&PNG_FLAG_STRIP_ERROR_TEXT)
- {
- msg[0] = '0';
- msg[1] = '\0';
- error_message = msg;
- }
- }
- }
- }
-#endif
- if (png_ptr != NULL && png_ptr->error_fn != NULL)
- (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr),
- error_message);
-
- /* If the custom handler doesn't exist, or if it returns,
- use the default handler, which will not return. */
- png_default_error(png_ptr, error_message);
-}
-#else
-PNG_FUNCTION(void,PNGAPI
-png_err,(png_const_structrp png_ptr),PNG_NORETURN)
-{
- /* Prior to 1.5.2 the error_fn received a NULL pointer, expressed
- * erroneously as '\0', instead of the empty string "". This was
- * apparently an error, introduced in libpng-1.2.20, and png_default_error
- * will crash in this case.
- */
- if (png_ptr != NULL && png_ptr->error_fn != NULL)
- (*(png_ptr->error_fn))(png_constcast(png_structrp,png_ptr), "");
-
- /* If the custom handler doesn't exist, or if it returns,
- use the default handler, which will not return. */
- png_default_error(png_ptr, "");
-}
-#endif /* PNG_ERROR_TEXT_SUPPORTED */
-
-/* Utility to safely appends strings to a buffer. This never errors out so
- * error checking is not required in the caller.
- */
-size_t
-png_safecat(png_charp buffer, size_t bufsize, size_t pos,
- png_const_charp string)
-{
- if (buffer != NULL && pos < bufsize)
- {
- if (string != NULL)
- while (*string != '\0' && pos < bufsize-1)
- buffer[pos++] = *string++;
-
- buffer[pos] = '\0';
- }
-
- return pos;
-}
-
-#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED)
-/* Utility to dump an unsigned value into a buffer, given a start pointer and
- * and end pointer (which should point just *beyond* the end of the buffer!)
- * Returns the pointer to the start of the formatted string.
- */
-png_charp
-png_format_number(png_const_charp start, png_charp end, int format,
- png_alloc_size_t number)
-{
- int count = 0; /* number of digits output */
- int mincount = 1; /* minimum number required */
- int output = 0; /* digit output (for the fixed point format) */
-
- *--end = '\0';
-
- /* This is written so that the loop always runs at least once, even with
- * number zero.
- */
- while (end > start && (number != 0 || count < mincount))
- {
-
- static const char digits[] = "0123456789ABCDEF";
-
- switch (format)
- {
- case PNG_NUMBER_FORMAT_fixed:
- /* Needs five digits (the fraction) */
- mincount = 5;
- if (output || number % 10 != 0)
- {
- *--end = digits[number % 10];
- output = 1;
- }
- number /= 10;
- break;
-
- case PNG_NUMBER_FORMAT_02u:
- /* Expects at least 2 digits. */
- mincount = 2;
- /* FALL THROUGH */
-
- case PNG_NUMBER_FORMAT_u:
- *--end = digits[number % 10];
- number /= 10;
- break;
-
- case PNG_NUMBER_FORMAT_02x:
- /* This format expects at least two digits */
- mincount = 2;
- /* FALL THROUGH */
-
- case PNG_NUMBER_FORMAT_x:
- *--end = digits[number & 0xf];
- number >>= 4;
- break;
-
- default: /* an error */
- number = 0;
- break;
- }
-
- /* Keep track of the number of digits added */
- ++count;
-
- /* Float a fixed number here: */
- if (format == PNG_NUMBER_FORMAT_fixed) if (count == 5) if (end > start)
- {
- /* End of the fraction, but maybe nothing was output? In that case
- * drop the decimal point. If the number is a true zero handle that
- * here.
- */
- if (output)
- *--end = '.';
- else if (number == 0) /* and !output */
- *--end = '0';
- }
- }
-
- return end;
-}
-#endif
-
-#ifdef PNG_WARNINGS_SUPPORTED
-/* This function is called whenever there is a non-fatal error. This function
- * should not be changed. If there is a need to handle warnings differently,
- * you should supply a replacement warning function and use
- * png_set_error_fn() to replace the warning function at run-time.
- */
-void PNGAPI
-png_warning(png_const_structrp png_ptr, png_const_charp warning_message)
-{
- int offset = 0;
- if (png_ptr != NULL)
- {
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- if (png_ptr->flags&
- (PNG_FLAG_STRIP_ERROR_NUMBERS|PNG_FLAG_STRIP_ERROR_TEXT))
-#endif
- {
- if (*warning_message == PNG_LITERAL_SHARP)
- {
- for (offset = 1; offset < 15; offset++)
- if (warning_message[offset] == ' ')
- break;
- }
- }
- }
- if (png_ptr != NULL && png_ptr->warning_fn != NULL)
- (*(png_ptr->warning_fn))(png_constcast(png_structrp,png_ptr),
- warning_message + offset);
- else
- png_default_warning(png_ptr, warning_message + offset);
-}
-
-/* These functions support 'formatted' warning messages with up to
- * PNG_WARNING_PARAMETER_COUNT parameters. In the format string the parameter
- * is introduced by @<number>, where 'number' starts at 1. This follows the
- * standard established by X/Open for internationalizable error messages.
- */
-void
-png_warning_parameter(png_warning_parameters p, int number,
- png_const_charp string)
-{
- if (number > 0 && number <= PNG_WARNING_PARAMETER_COUNT)
- (void)png_safecat(p[number-1], (sizeof p[number-1]), 0, string);
-}
-
-void
-png_warning_parameter_unsigned(png_warning_parameters p, int number, int format,
- png_alloc_size_t value)
-{
- char buffer[PNG_NUMBER_BUFFER_SIZE];
- png_warning_parameter(p, number, PNG_FORMAT_NUMBER(buffer, format, value));
-}
-
-void
-png_warning_parameter_signed(png_warning_parameters p, int number, int format,
- png_int_32 value)
-{
- png_alloc_size_t u;
- png_charp str;
- char buffer[PNG_NUMBER_BUFFER_SIZE];
-
- /* Avoid overflow by doing the negate in a png_alloc_size_t: */
- u = (png_alloc_size_t)value;
- if (value < 0)
- u = ~u + 1;
-
- str = PNG_FORMAT_NUMBER(buffer, format, u);
-
- if (value < 0 && str > buffer)
- *--str = '-';
-
- png_warning_parameter(p, number, str);
-}
-
-void
-png_formatted_warning(png_const_structrp png_ptr, png_warning_parameters p,
- png_const_charp message)
-{
- /* The internal buffer is just 192 bytes - enough for all our messages,
- * overflow doesn't happen because this code checks! If someone figures
- * out how to send us a message longer than 192 bytes, all that will
- * happen is that the message will be truncated appropriately.
- */
- size_t i = 0; /* Index in the msg[] buffer: */
- char msg[192];
-
- /* Each iteration through the following loop writes at most one character
- * to msg[i++] then returns here to validate that there is still space for
- * the trailing '\0'. It may (in the case of a parameter) read more than
- * one character from message[]; it must check for '\0' and continue to the
- * test if it finds the end of string.
- */
- while (i<(sizeof msg)-1 && *message != '\0')
- {
- /* '@' at end of string is now just printed (previously it was skipped);
- * it is an error in the calling code to terminate the string with @.
- */
- if (p != NULL && *message == '@' && message[1] != '\0')
- {
- int parameter_char = *++message; /* Consume the '@' */
- static const char valid_parameters[] = "123456789";
- int parameter = 0;
-
- /* Search for the parameter digit, the index in the string is the
- * parameter to use.
- */
- while (valid_parameters[parameter] != parameter_char &&
- valid_parameters[parameter] != '\0')
- ++parameter;
-
- /* If the parameter digit is out of range it will just get printed. */
- if (parameter < PNG_WARNING_PARAMETER_COUNT)
- {
- /* Append this parameter */
- png_const_charp parm = p[parameter];
- png_const_charp pend = p[parameter] + (sizeof p[parameter]);
-
- /* No need to copy the trailing '\0' here, but there is no guarantee
- * that parm[] has been initialized, so there is no guarantee of a
- * trailing '\0':
- */
- while (i<(sizeof msg)-1 && *parm != '\0' && parm < pend)
- msg[i++] = *parm++;
-
- /* Consume the parameter digit too: */
- ++message;
- continue;
- }
-
- /* else not a parameter and there is a character after the @ sign; just
- * copy that. This is known not to be '\0' because of the test above.
- */
- }
-
- /* At this point *message can't be '\0', even in the bad parameter case
- * above where there is a lone '@' at the end of the message string.
- */
- msg[i++] = *message++;
- }
-
- /* i is always less than (sizeof msg), so: */
- msg[i] = '\0';
-
- /* And this is the formatted message. It may be larger than
- * PNG_MAX_ERROR_TEXT, but that is only used for 'chunk' errors and these
- * are not (currently) formatted.
- */
- png_warning(png_ptr, msg);
-}
-#endif /* PNG_WARNINGS_SUPPORTED */
-
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-void PNGAPI
-png_benign_error(png_const_structrp png_ptr, png_const_charp error_message)
-{
- if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
- {
-# ifdef PNG_READ_SUPPORTED
- if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
- png_ptr->chunk_name != 0)
- png_chunk_warning(png_ptr, error_message);
- else
-# endif
- png_warning(png_ptr, error_message);
- }
-
- else
- {
-# ifdef PNG_READ_SUPPORTED
- if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
- png_ptr->chunk_name != 0)
- png_chunk_error(png_ptr, error_message);
- else
-# endif
- png_error(png_ptr, error_message);
- }
-}
-
-void /* PRIVATE */
-png_app_warning(png_const_structrp png_ptr, png_const_charp error_message)
-{
- if (png_ptr->flags & PNG_FLAG_APP_WARNINGS_WARN)
- png_warning(png_ptr, error_message);
- else
- png_error(png_ptr, error_message);
-}
-
-void /* PRIVATE */
-png_app_error(png_const_structrp png_ptr, png_const_charp error_message)
-{
- if (png_ptr->flags & PNG_FLAG_APP_ERRORS_WARN)
- png_warning(png_ptr, error_message);
- else
- png_error(png_ptr, error_message);
-}
-#endif /* BENIGN_ERRORS */
-
-/* These utilities are used internally to build an error message that relates
- * to the current chunk. The chunk name comes from png_ptr->chunk_name,
- * this is used to prefix the message. The message is limited in length
- * to 63 bytes, the name characters are output as hex digits wrapped in []
- * if the character is invalid.
- */
-#define isnonalpha(c) ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
-static PNG_CONST char png_digit[16] = {
- '0', '1', '2', '3', '4', '5', '6', '7', '8', '9',
- 'A', 'B', 'C', 'D', 'E', 'F'
-};
-
-#define PNG_MAX_ERROR_TEXT 196 /* Currently limited be profile_error in png.c */
-#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_ERROR_TEXT_SUPPORTED)
-static void /* PRIVATE */
-png_format_buffer(png_const_structrp png_ptr, png_charp buffer, png_const_charp
- error_message)
-{
- png_uint_32 chunk_name = png_ptr->chunk_name;
- int iout = 0, ishift = 24;
-
- while (ishift >= 0)
- {
- int c = (int)(chunk_name >> ishift) & 0xff;
-
- ishift -= 8;
- if (isnonalpha(c))
- {
- buffer[iout++] = PNG_LITERAL_LEFT_SQUARE_BRACKET;
- buffer[iout++] = png_digit[(c & 0xf0) >> 4];
- buffer[iout++] = png_digit[c & 0x0f];
- buffer[iout++] = PNG_LITERAL_RIGHT_SQUARE_BRACKET;
- }
-
- else
- {
- buffer[iout++] = (char)c;
- }
- }
-
- if (error_message == NULL)
- buffer[iout] = '\0';
-
- else
- {
- int iin = 0;
-
- buffer[iout++] = ':';
- buffer[iout++] = ' ';
-
- while (iin < PNG_MAX_ERROR_TEXT-1 && error_message[iin] != '\0')
- buffer[iout++] = error_message[iin++];
-
- /* iin < PNG_MAX_ERROR_TEXT, so the following is safe: */
- buffer[iout] = '\0';
- }
-}
-#endif /* PNG_WARNINGS_SUPPORTED || PNG_ERROR_TEXT_SUPPORTED */
-
-#if defined(PNG_READ_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
-PNG_FUNCTION(void,PNGAPI
-png_chunk_error,(png_const_structrp png_ptr, png_const_charp error_message),
- PNG_NORETURN)
-{
- char msg[18+PNG_MAX_ERROR_TEXT];
- if (png_ptr == NULL)
- png_error(png_ptr, error_message);
-
- else
- {
- png_format_buffer(png_ptr, msg, error_message);
- png_error(png_ptr, msg);
- }
-}
-#endif /* PNG_READ_SUPPORTED && PNG_ERROR_TEXT_SUPPORTED */
-
-#ifdef PNG_WARNINGS_SUPPORTED
-void PNGAPI
-png_chunk_warning(png_const_structrp png_ptr, png_const_charp warning_message)
-{
- char msg[18+PNG_MAX_ERROR_TEXT];
- if (png_ptr == NULL)
- png_warning(png_ptr, warning_message);
-
- else
- {
- png_format_buffer(png_ptr, msg, warning_message);
- png_warning(png_ptr, msg);
- }
-}
-#endif /* PNG_WARNINGS_SUPPORTED */
-
-#ifdef PNG_READ_SUPPORTED
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-void PNGAPI
-png_chunk_benign_error(png_const_structrp png_ptr, png_const_charp
- error_message)
-{
- if (png_ptr->flags & PNG_FLAG_BENIGN_ERRORS_WARN)
- png_chunk_warning(png_ptr, error_message);
-
- else
- png_chunk_error(png_ptr, error_message);
-}
-#endif
-#endif /* PNG_READ_SUPPORTED */
-
-void /* PRIVATE */
-png_chunk_report(png_const_structrp png_ptr, png_const_charp message, int error)
-{
- /* This is always supported, but for just read or just write it
- * unconditionally does the right thing.
- */
-# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED)
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
-# endif
-
-# ifdef PNG_READ_SUPPORTED
- {
- if (error < PNG_CHUNK_ERROR)
- png_chunk_warning(png_ptr, message);
-
- else
- png_chunk_benign_error(png_ptr, message);
- }
-# endif
-
-# if defined(PNG_READ_SUPPORTED) && defined(PNG_WRITE_SUPPORTED)
- else if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
-# endif
-
-# ifdef PNG_WRITE_SUPPORTED
- {
- if (error < PNG_CHUNK_WRITE_ERROR)
- png_app_warning(png_ptr, message);
-
- else
- png_app_error(png_ptr, message);
- }
-# endif
-}
-
-#ifdef PNG_ERROR_TEXT_SUPPORTED
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_FUNCTION(void,
-png_fixed_error,(png_const_structrp png_ptr, png_const_charp name),PNG_NORETURN)
-{
-# define fixed_message "fixed point overflow in "
-# define fixed_message_ln ((sizeof fixed_message)-1)
- int iin;
- char msg[fixed_message_ln+PNG_MAX_ERROR_TEXT];
- memcpy(msg, fixed_message, fixed_message_ln);
- iin = 0;
- if (name != NULL) while (iin < (PNG_MAX_ERROR_TEXT-1) && name[iin] != 0)
- {
- msg[fixed_message_ln + iin] = name[iin];
- ++iin;
- }
- msg[fixed_message_ln + iin] = 0;
- png_error(png_ptr, msg);
-}
-#endif
-#endif
-
-#ifdef PNG_SETJMP_SUPPORTED
-/* This API only exists if ANSI-C style error handling is used,
- * otherwise it is necessary for png_default_error to be overridden.
- */
-jmp_buf* PNGAPI
-png_set_longjmp_fn(png_structrp png_ptr, png_longjmp_ptr longjmp_fn,
- size_t jmp_buf_size)
-{
- /* From libpng 1.6.0 the app gets one chance to set a 'jmpbuf_size' value
- * and it must not change after that. Libpng doesn't care how big the
- * buffer is, just that it doesn't change.
- *
- * If the buffer size is no *larger* than the size of jmp_buf when libpng is
- * compiled a built in jmp_buf is returned; this preserves the pre-1.6.0
- * semantics that this call will not fail. If the size is larger, however,
- * the buffer is allocated and this may fail, causing the function to return
- * NULL.
- */
- if (png_ptr == NULL)
- return NULL;
-
- if (png_ptr->jmp_buf_ptr == NULL)
- {
- png_ptr->jmp_buf_size = 0; /* not allocated */
-
- if (jmp_buf_size <= (sizeof png_ptr->jmp_buf_local))
- png_ptr->jmp_buf_ptr = &png_ptr->jmp_buf_local;
-
- else
- {
- png_ptr->jmp_buf_ptr = png_voidcast(jmp_buf *,
- png_malloc_warn(png_ptr, jmp_buf_size));
-
- if (png_ptr->jmp_buf_ptr == NULL)
- return NULL; /* new NULL return on OOM */
-
- png_ptr->jmp_buf_size = jmp_buf_size;
- }
- }
-
- else /* Already allocated: check the size */
- {
- size_t size = png_ptr->jmp_buf_size;
-
- if (size == 0)
- {
- size = (sizeof png_ptr->jmp_buf_local);
- if (png_ptr->jmp_buf_ptr != &png_ptr->jmp_buf_local)
- {
- /* This is an internal error in libpng: somehow we have been left
- * with a stack allocated jmp_buf when the application regained
- * control. It's always possible to fix this up, but for the moment
- * this is a png_error because that makes it easy to detect.
- */
- png_error(png_ptr, "Libpng jmp_buf still allocated");
- /* png_ptr->jmp_buf_ptr = &png_ptr->jmp_buf_local; */
- }
- }
-
- if (size != jmp_buf_size)
- {
- png_warning(png_ptr, "Application jmp_buf size changed");
- return NULL; /* caller will probably crash: no choice here */
- }
- }
-
- /* Finally fill in the function, now we have a satisfactory buffer. It is
- * valid to change the function on every call.
- */
- png_ptr->longjmp_fn = longjmp_fn;
- return png_ptr->jmp_buf_ptr;
-}
-
-void /* PRIVATE */
-png_free_jmpbuf(png_structrp png_ptr)
-{
- if (png_ptr != NULL)
- {
- jmp_buf *jb = png_ptr->jmp_buf_ptr;
-
- /* A size of 0 is used to indicate a local, stack, allocation of the
- * pointer; used here and in png.c
- */
- if (jb != NULL && png_ptr->jmp_buf_size > 0)
- {
-
- /* This stuff is so that a failure to free the error control structure
- * does not leave libpng in a state with no valid error handling: the
- * free always succeeds, if there is an error it gets ignored.
- */
- if (jb != &png_ptr->jmp_buf_local)
- {
- /* Make an internal, libpng, jmp_buf to return here */
- jmp_buf free_jmp_buf;
-
- if (!setjmp(free_jmp_buf))
- {
- png_ptr->jmp_buf_ptr = &free_jmp_buf; /* come back here */
- png_ptr->jmp_buf_size = 0; /* stack allocation */
- png_ptr->longjmp_fn = longjmp;
- png_free(png_ptr, jb); /* Return to setjmp on error */
- }
- }
- }
-
- /* *Always* cancel everything out: */
- png_ptr->jmp_buf_size = 0;
- png_ptr->jmp_buf_ptr = NULL;
- png_ptr->longjmp_fn = 0;
- }
-}
-#endif
-
-/* This is the default error handling function. Note that replacements for
- * this function MUST NOT RETURN, or the program will likely crash. This
- * function is used by default, or if the program supplies NULL for the
- * error function pointer in png_set_error_fn().
- */
-static PNG_FUNCTION(void /* PRIVATE */,
-png_default_error,(png_const_structrp png_ptr, png_const_charp error_message),
- PNG_NORETURN)
-{
-#ifdef PNG_CONSOLE_IO_SUPPORTED
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
- /* Check on NULL only added in 1.5.4 */
- if (error_message != NULL && *error_message == PNG_LITERAL_SHARP)
- {
- /* Strip "#nnnn " from beginning of error message. */
- int offset;
- char error_number[16];
- for (offset = 0; offset<15; offset++)
- {
- error_number[offset] = error_message[offset + 1];
- if (error_message[offset] == ' ')
- break;
- }
-
- if ((offset > 1) && (offset < 15))
- {
- error_number[offset - 1] = '\0';
- fprintf(stderr, "libpng error no. %s: %s",
- error_number, error_message + offset + 1);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
-
- else
- {
- fprintf(stderr, "libpng error: %s, offset=%d",
- error_message, offset);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
- }
- else
-#endif
- {
- fprintf(stderr, "libpng error: %s", error_message ? error_message :
- "undefined");
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
-#else
- PNG_UNUSED(error_message) /* Make compiler happy */
-#endif
- png_longjmp(png_ptr, 1);
-}
-
-PNG_FUNCTION(void,PNGAPI
-png_longjmp,(png_const_structrp png_ptr, int val),PNG_NORETURN)
-{
-#ifdef PNG_SETJMP_SUPPORTED
- if (png_ptr && png_ptr->longjmp_fn && png_ptr->jmp_buf_ptr)
- png_ptr->longjmp_fn(*png_ptr->jmp_buf_ptr, val);
-#endif
-
- /* Here if not setjmp support or if png_ptr is null. */
- PNG_ABORT();
-}
-
-#ifdef PNG_WARNINGS_SUPPORTED
-/* This function is called when there is a warning, but the library thinks
- * it can continue anyway. Replacement functions don't have to do anything
- * here if you don't want them to. In the default configuration, png_ptr is
- * not used, but it is passed in case it may be useful.
- */
-static void /* PRIVATE */
-png_default_warning(png_const_structrp png_ptr, png_const_charp warning_message)
-{
-#ifdef PNG_CONSOLE_IO_SUPPORTED
-# ifdef PNG_ERROR_NUMBERS_SUPPORTED
- if (*warning_message == PNG_LITERAL_SHARP)
- {
- int offset;
- char warning_number[16];
- for (offset = 0; offset < 15; offset++)
- {
- warning_number[offset] = warning_message[offset + 1];
- if (warning_message[offset] == ' ')
- break;
- }
-
- if ((offset > 1) && (offset < 15))
- {
- warning_number[offset + 1] = '\0';
- fprintf(stderr, "libpng warning no. %s: %s",
- warning_number, warning_message + offset);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
-
- else
- {
- fprintf(stderr, "libpng warning: %s",
- warning_message);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
- }
- else
-# endif
-
- {
- fprintf(stderr, "libpng warning: %s", warning_message);
- fprintf(stderr, PNG_STRING_NEWLINE);
- }
-#else
- PNG_UNUSED(warning_message) /* Make compiler happy */
-#endif
- PNG_UNUSED(png_ptr) /* Make compiler happy */
-}
-#endif /* PNG_WARNINGS_SUPPORTED */
-
-/* This function is called when the application wants to use another method
- * of handling errors and warnings. Note that the error function MUST NOT
- * return to the calling routine or serious problems will occur. The return
- * method used in the default routine calls longjmp(png_ptr->jmp_buf_ptr, 1)
- */
-void PNGAPI
-png_set_error_fn(png_structrp png_ptr, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warning_fn)
-{
- if (png_ptr == NULL)
- return;
-
- png_ptr->error_ptr = error_ptr;
- png_ptr->error_fn = error_fn;
-#ifdef PNG_WARNINGS_SUPPORTED
- png_ptr->warning_fn = warning_fn;
-#else
- PNG_UNUSED(warning_fn)
-#endif
-}
-
-
-/* This function returns a pointer to the error_ptr associated with the user
- * functions. The application should free any memory associated with this
- * pointer before png_write_destroy and png_read_destroy are called.
- */
-png_voidp PNGAPI
-png_get_error_ptr(png_const_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return NULL;
-
- return ((png_voidp)png_ptr->error_ptr);
-}
-
-
-#ifdef PNG_ERROR_NUMBERS_SUPPORTED
-void PNGAPI
-png_set_strip_error_numbers(png_structrp png_ptr, png_uint_32 strip_mode)
-{
- if (png_ptr != NULL)
- {
- png_ptr->flags &=
- ((~(PNG_FLAG_STRIP_ERROR_NUMBERS |
- PNG_FLAG_STRIP_ERROR_TEXT))&strip_mode);
- }
-}
-#endif
-
-#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
- defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
- /* Currently the above both depend on SETJMP_SUPPORTED, however it would be
- * possible to implement without setjmp support just so long as there is some
- * way to handle the error return here:
- */
-PNG_FUNCTION(void /* PRIVATE */,
-png_safe_error,(png_structp png_nonconst_ptr, png_const_charp error_message),
- PNG_NORETURN)
-{
- const png_const_structrp png_ptr = png_nonconst_ptr;
- png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
-
- /* An error is always logged here, overwriting anything (typically a warning)
- * that is already there:
- */
- if (image != NULL)
- {
- png_safecat(image->message, (sizeof image->message), 0, error_message);
- image->warning_or_error |= PNG_IMAGE_ERROR;
-
- /* Retrieve the jmp_buf from within the png_control, making this work for
- * C++ compilation too is pretty tricky: C++ wants a pointer to the first
- * element of a jmp_buf, but C doesn't tell us the type of that.
- */
- if (image->opaque != NULL && image->opaque->error_buf != NULL)
- longjmp(png_control_jmp_buf(image->opaque), 1);
-
- /* Missing longjmp buffer, the following is to help debugging: */
- {
- size_t pos = png_safecat(image->message, (sizeof image->message), 0,
- "bad longjmp: ");
- png_safecat(image->message, (sizeof image->message), pos,
- error_message);
- }
- }
-
- /* Here on an internal programming error. */
- abort();
-}
-
-#ifdef PNG_WARNINGS_SUPPORTED
-void /* PRIVATE */
-png_safe_warning(png_structp png_nonconst_ptr, png_const_charp warning_message)
-{
- const png_const_structrp png_ptr = png_nonconst_ptr;
- png_imagep image = png_voidcast(png_imagep, png_ptr->error_ptr);
-
- /* A warning is only logged if there is no prior warning or error. */
- if (image->warning_or_error == 0)
- {
- png_safecat(image->message, (sizeof image->message), 0, warning_message);
- image->warning_or_error |= PNG_IMAGE_WARNING;
- }
-}
-#endif
-
-int /* PRIVATE */
-png_safe_execute(png_imagep image_in, int (*function)(png_voidp), png_voidp arg)
-{
- volatile png_imagep image = image_in;
- volatile int result;
- volatile png_voidp saved_error_buf;
- jmp_buf safe_jmpbuf;
-
- /* Safely execute function(arg) with png_error returning to this function. */
- saved_error_buf = image->opaque->error_buf;
- result = setjmp(safe_jmpbuf) == 0;
-
- if (result)
- {
-
- image->opaque->error_buf = safe_jmpbuf;
- result = function(arg);
- }
-
- image->opaque->error_buf = saved_error_buf;
-
- /* And do the cleanup prior to any failure return. */
- if (!result)
- png_image_free(image);
-
- return result;
-}
-#endif /* SIMPLIFIED READ/WRITE */
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pngget.c - retrieval of values from info struct
- *
- * Last changed in libpng 1.6.1 [March 28, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- */
-
-#include "pngpriv.h"
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-
-png_uint_32 PNGAPI
-png_get_valid(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_uint_32 flag)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->valid & flag);
-
- return(0);
-}
-
-png_size_t PNGAPI
-png_get_rowbytes(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->rowbytes);
-
- return(0);
-}
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-png_bytepp PNGAPI
-png_get_rows(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->row_pointers);
-
- return(0);
-}
-#endif
-
-#ifdef PNG_EASY_ACCESS_SUPPORTED
-/* Easy access to info, added in libpng-0.99 */
-png_uint_32 PNGAPI
-png_get_image_width(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->width;
-
- return (0);
-}
-
-png_uint_32 PNGAPI
-png_get_image_height(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->height;
-
- return (0);
-}
-
-png_byte PNGAPI
-png_get_bit_depth(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->bit_depth;
-
- return (0);
-}
-
-png_byte PNGAPI
-png_get_color_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->color_type;
-
- return (0);
-}
-
-png_byte PNGAPI
-png_get_filter_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->filter_type;
-
- return (0);
-}
-
-png_byte PNGAPI
-png_get_interlace_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->interlace_type;
-
- return (0);
-}
-
-png_byte PNGAPI
-png_get_compression_type(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return info_ptr->compression_type;
-
- return (0);
-}
-
-png_uint_32 PNGAPI
-png_get_x_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
- info_ptr)
-{
-#ifdef PNG_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
- {
- png_debug1(1, "in %s retrieval function",
- "png_get_x_pixels_per_meter");
-
- if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
- return (info_ptr->x_pixels_per_unit);
- }
-#endif
-
- return (0);
-}
-
-png_uint_32 PNGAPI
-png_get_y_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp
- info_ptr)
-{
-#ifdef PNG_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
- {
- png_debug1(1, "in %s retrieval function",
- "png_get_y_pixels_per_meter");
-
- if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER)
- return (info_ptr->y_pixels_per_unit);
- }
-#endif
-
- return (0);
-}
-
-png_uint_32 PNGAPI
-png_get_pixels_per_meter(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
-#ifdef PNG_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
- {
- png_debug1(1, "in %s retrieval function", "png_get_pixels_per_meter");
-
- if (info_ptr->phys_unit_type == PNG_RESOLUTION_METER &&
- info_ptr->x_pixels_per_unit == info_ptr->y_pixels_per_unit)
- return (info_ptr->x_pixels_per_unit);
- }
-#endif
-
- return (0);
-}
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-float PNGAPI
-png_get_pixel_aspect_ratio(png_const_structrp png_ptr, png_const_inforp
- info_ptr)
-{
-#ifdef PNG_READ_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
- {
- png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio");
-
- if (info_ptr->x_pixels_per_unit != 0)
- return ((float)((float)info_ptr->y_pixels_per_unit
- /(float)info_ptr->x_pixels_per_unit));
- }
-#else
- PNG_UNUSED(png_ptr)
- PNG_UNUSED(info_ptr)
-#endif
-
- return ((float)0.0);
-}
-#endif
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-png_fixed_point PNGAPI
-png_get_pixel_aspect_ratio_fixed(png_const_structrp png_ptr,
- png_const_inforp info_ptr)
-{
-#ifdef PNG_READ_pHYs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs)
- && info_ptr->x_pixels_per_unit > 0 && info_ptr->y_pixels_per_unit > 0
- && info_ptr->x_pixels_per_unit <= PNG_UINT_31_MAX
- && info_ptr->y_pixels_per_unit <= PNG_UINT_31_MAX)
- {
- png_fixed_point res;
-
- png_debug1(1, "in %s retrieval function", "png_get_aspect_ratio_fixed");
-
- /* The following casts work because a PNG 4 byte integer only has a valid
- * range of 0..2^31-1; otherwise the cast might overflow.
- */
- if (png_muldiv(&res, (png_int_32)info_ptr->y_pixels_per_unit, PNG_FP_1,
- (png_int_32)info_ptr->x_pixels_per_unit))
- return res;
- }
-#else
- PNG_UNUSED(png_ptr)
- PNG_UNUSED(info_ptr)
-#endif
-
- return 0;
-}
-#endif
-
-png_int_32 PNGAPI
-png_get_x_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
-#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
- {
- png_debug1(1, "in %s retrieval function", "png_get_x_offset_microns");
-
- if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
- return (info_ptr->x_offset);
- }
-#endif
-
- return (0);
-}
-
-png_int_32 PNGAPI
-png_get_y_offset_microns(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
-#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
- {
- png_debug1(1, "in %s retrieval function", "png_get_y_offset_microns");
-
- if (info_ptr->offset_unit_type == PNG_OFFSET_MICROMETER)
- return (info_ptr->y_offset);
- }
-#endif
-
- return (0);
-}
-
-png_int_32 PNGAPI
-png_get_x_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
-#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
- {
- png_debug1(1, "in %s retrieval function", "png_get_x_offset_pixels");
-
- if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
- return (info_ptr->x_offset);
- }
-#endif
-
- return (0);
-}
-
-png_int_32 PNGAPI
-png_get_y_offset_pixels(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
-#ifdef PNG_oFFs_SUPPORTED
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
- {
- png_debug1(1, "in %s retrieval function", "png_get_y_offset_pixels");
-
- if (info_ptr->offset_unit_type == PNG_OFFSET_PIXEL)
- return (info_ptr->y_offset);
- }
-#endif
-
- return (0);
-}
-
-#ifdef PNG_INCH_CONVERSIONS_SUPPORTED
-static png_uint_32
-ppi_from_ppm(png_uint_32 ppm)
-{
-#if 0
- /* The conversion is *(2.54/100), in binary (32 digits):
- * .00000110100000001001110101001001
- */
- png_uint_32 t1001, t1101;
- ppm >>= 1; /* .1 */
- t1001 = ppm + (ppm >> 3); /* .1001 */
- t1101 = t1001 + (ppm >> 1); /* .1101 */
- ppm >>= 20; /* .000000000000000000001 */
- t1101 += t1101 >> 15; /* .1101000000000001101 */
- t1001 >>= 11; /* .000000000001001 */
- t1001 += t1001 >> 12; /* .000000000001001000000001001 */
- ppm += t1001; /* .000000000001001000001001001 */
- ppm += t1101; /* .110100000001001110101001001 */
- return (ppm + 16) >> 5;/* .00000110100000001001110101001001 */
-#else
- /* The argument is a PNG unsigned integer, so it is not permitted
- * to be bigger than 2^31.
- */
- png_fixed_point result;
- if (ppm <= PNG_UINT_31_MAX && png_muldiv(&result, (png_int_32)ppm, 127,
- 5000))
- return result;
-
- /* Overflow. */
- return 0;
-#endif
-}
-
-png_uint_32 PNGAPI
-png_get_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- return ppi_from_ppm(png_get_pixels_per_meter(png_ptr, info_ptr));
-}
-
-png_uint_32 PNGAPI
-png_get_x_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- return ppi_from_ppm(png_get_x_pixels_per_meter(png_ptr, info_ptr));
-}
-
-png_uint_32 PNGAPI
-png_get_y_pixels_per_inch(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- return ppi_from_ppm(png_get_y_pixels_per_meter(png_ptr, info_ptr));
-}
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-static png_fixed_point
-png_fixed_inches_from_microns(png_const_structrp png_ptr, png_int_32 microns)
-{
- /* Convert from metres * 1,000,000 to inches * 100,000, meters to
- * inches is simply *(100/2.54), so we want *(10/2.54) == 500/127.
- * Notice that this can overflow - a warning is output and 0 is
- * returned.
- */
- return png_muldiv_warn(png_ptr, microns, 500, 127);
-}
-
-png_fixed_point PNGAPI
-png_get_x_offset_inches_fixed(png_const_structrp png_ptr,
- png_const_inforp info_ptr)
-{
- return png_fixed_inches_from_microns(png_ptr,
- png_get_x_offset_microns(png_ptr, info_ptr));
-}
-#endif
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-png_fixed_point PNGAPI
-png_get_y_offset_inches_fixed(png_const_structrp png_ptr,
- png_const_inforp info_ptr)
-{
- return png_fixed_inches_from_microns(png_ptr,
- png_get_y_offset_microns(png_ptr, info_ptr));
-}
-#endif
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-float PNGAPI
-png_get_x_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- /* To avoid the overflow do the conversion directly in floating
- * point.
- */
- return (float)(png_get_x_offset_microns(png_ptr, info_ptr) * .00003937);
-}
-#endif
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-float PNGAPI
-png_get_y_offset_inches(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- /* To avoid the overflow do the conversion directly in floating
- * point.
- */
- return (float)(png_get_y_offset_microns(png_ptr, info_ptr) * .00003937);
-}
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
-png_uint_32 PNGAPI
-png_get_pHYs_dpi(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
-{
- png_uint_32 retval = 0;
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
- {
- png_debug1(1, "in %s retrieval function", "pHYs");
-
- if (res_x != NULL)
- {
- *res_x = info_ptr->x_pixels_per_unit;
- retval |= PNG_INFO_pHYs;
- }
-
- if (res_y != NULL)
- {
- *res_y = info_ptr->y_pixels_per_unit;
- retval |= PNG_INFO_pHYs;
- }
-
- if (unit_type != NULL)
- {
- *unit_type = (int)info_ptr->phys_unit_type;
- retval |= PNG_INFO_pHYs;
-
- if (*unit_type == 1)
- {
- if (res_x != NULL) *res_x = (png_uint_32)(*res_x * .0254 + .50);
- if (res_y != NULL) *res_y = (png_uint_32)(*res_y * .0254 + .50);
- }
- }
- }
-
- return (retval);
-}
-#endif /* PNG_pHYs_SUPPORTED */
-#endif /* PNG_INCH_CONVERSIONS_SUPPORTED */
-
-/* png_get_channels really belongs in here, too, but it's been around longer */
-
-#endif /* PNG_EASY_ACCESS_SUPPORTED */
-
-
-png_byte PNGAPI
-png_get_channels(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->channels);
-
- return (0);
-}
-
-#ifdef PNG_READ_SUPPORTED
-png_const_bytep PNGAPI
-png_get_signature(png_const_structrp png_ptr, png_const_inforp info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return(info_ptr->signature);
-
- return (NULL);
-}
-#endif
-
-#ifdef PNG_bKGD_SUPPORTED
-png_uint_32 PNGAPI
-png_get_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
- png_color_16p *background)
-{
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD)
- && background != NULL)
- {
- png_debug1(1, "in %s retrieval function", "bKGD");
-
- *background = &(info_ptr->background);
- return (PNG_INFO_bKGD);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
-/* The XYZ APIs were added in 1.5.5 to take advantage of the code added at the
- * same time to correct the rgb grayscale coefficient defaults obtained from the
- * cHRM chunk in 1.5.4
- */
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_cHRM(png_const_structrp png_ptr, png_const_inforp info_ptr,
- double *white_x, double *white_y, double *red_x, double *red_y,
- double *green_x, double *green_y, double *blue_x, double *blue_y)
-{
- /* Quiet API change: this code used to only return the end points if a cHRM
- * chunk was present, but the end points can also come from iCCP or sRGB
- * chunks, so in 1.6.0 the png_get_ APIs return the end points regardless and
- * the png_set_ APIs merely check that set end points are mutually
- * consistent.
- */
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
- {
- png_debug1(1, "in %s retrieval function", "cHRM");
-
- if (white_x != NULL)
- *white_x = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.whitex, "cHRM white X");
- if (white_y != NULL)
- *white_y = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.whitey, "cHRM white Y");
- if (red_x != NULL)
- *red_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redx,
- "cHRM red X");
- if (red_y != NULL)
- *red_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.redy,
- "cHRM red Y");
- if (green_x != NULL)
- *green_x = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.greenx, "cHRM green X");
- if (green_y != NULL)
- *green_y = png_float(png_ptr,
- info_ptr->colorspace.end_points_xy.greeny, "cHRM green Y");
- if (blue_x != NULL)
- *blue_x = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluex,
- "cHRM blue X");
- if (blue_y != NULL)
- *blue_y = png_float(png_ptr, info_ptr->colorspace.end_points_xy.bluey,
- "cHRM blue Y");
- return (PNG_INFO_cHRM);
- }
-
- return (0);
-}
-
-png_uint_32 PNGAPI
-png_get_cHRM_XYZ(png_const_structrp png_ptr, png_const_inforp info_ptr,
- double *red_X, double *red_Y, double *red_Z, double *green_X,
- double *green_Y, double *green_Z, double *blue_X, double *blue_Y,
- double *blue_Z)
-{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
- {
- png_debug1(1, "in %s retrieval function", "cHRM_XYZ(float)");
-
- if (red_X != NULL)
- *red_X = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_X,
- "cHRM red X");
- if (red_Y != NULL)
- *red_Y = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Y,
- "cHRM red Y");
- if (red_Z != NULL)
- *red_Z = png_float(png_ptr, info_ptr->colorspace.end_points_XYZ.red_Z,
- "cHRM red Z");
- if (green_X != NULL)
- *green_X = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.green_X, "cHRM green X");
- if (green_Y != NULL)
- *green_Y = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.green_Y, "cHRM green Y");
- if (green_Z != NULL)
- *green_Z = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.green_Z, "cHRM green Z");
- if (blue_X != NULL)
- *blue_X = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.blue_X, "cHRM blue X");
- if (blue_Y != NULL)
- *blue_Y = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.blue_Y, "cHRM blue Y");
- if (blue_Z != NULL)
- *blue_Z = png_float(png_ptr,
- info_ptr->colorspace.end_points_XYZ.blue_Z, "cHRM blue Z");
- return (PNG_INFO_cHRM);
- }
-
- return (0);
-}
-# endif
-
-# ifdef PNG_FIXED_POINT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_fixed_point *int_red_X, png_fixed_point *int_red_Y,
- png_fixed_point *int_red_Z, png_fixed_point *int_green_X,
- png_fixed_point *int_green_Y, png_fixed_point *int_green_Z,
- png_fixed_point *int_blue_X, png_fixed_point *int_blue_Y,
- png_fixed_point *int_blue_Z)
-{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
- {
- png_debug1(1, "in %s retrieval function", "cHRM_XYZ");
-
- if (int_red_X != NULL)
- *int_red_X = info_ptr->colorspace.end_points_XYZ.red_X;
- if (int_red_Y != NULL)
- *int_red_Y = info_ptr->colorspace.end_points_XYZ.red_Y;
- if (int_red_Z != NULL)
- *int_red_Z = info_ptr->colorspace.end_points_XYZ.red_Z;
- if (int_green_X != NULL)
- *int_green_X = info_ptr->colorspace.end_points_XYZ.green_X;
- if (int_green_Y != NULL)
- *int_green_Y = info_ptr->colorspace.end_points_XYZ.green_Y;
- if (int_green_Z != NULL)
- *int_green_Z = info_ptr->colorspace.end_points_XYZ.green_Z;
- if (int_blue_X != NULL)
- *int_blue_X = info_ptr->colorspace.end_points_XYZ.blue_X;
- if (int_blue_Y != NULL)
- *int_blue_Y = info_ptr->colorspace.end_points_XYZ.blue_Y;
- if (int_blue_Z != NULL)
- *int_blue_Z = info_ptr->colorspace.end_points_XYZ.blue_Z;
- return (PNG_INFO_cHRM);
- }
-
- return (0);
-}
-
-png_uint_32 PNGAPI
-png_get_cHRM_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_fixed_point *white_x, png_fixed_point *white_y, png_fixed_point *red_x,
- png_fixed_point *red_y, png_fixed_point *green_x, png_fixed_point *green_y,
- png_fixed_point *blue_x, png_fixed_point *blue_y)
-{
- png_debug1(1, "in %s retrieval function", "cHRM");
-
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_ENDPOINTS))
- {
- if (white_x != NULL)
- *white_x = info_ptr->colorspace.end_points_xy.whitex;
- if (white_y != NULL)
- *white_y = info_ptr->colorspace.end_points_xy.whitey;
- if (red_x != NULL)
- *red_x = info_ptr->colorspace.end_points_xy.redx;
- if (red_y != NULL)
- *red_y = info_ptr->colorspace.end_points_xy.redy;
- if (green_x != NULL)
- *green_x = info_ptr->colorspace.end_points_xy.greenx;
- if (green_y != NULL)
- *green_y = info_ptr->colorspace.end_points_xy.greeny;
- if (blue_x != NULL)
- *blue_x = info_ptr->colorspace.end_points_xy.bluex;
- if (blue_y != NULL)
- *blue_y = info_ptr->colorspace.end_points_xy.bluey;
- return (PNG_INFO_cHRM);
- }
-
- return (0);
-}
-# endif
-#endif
-
-#ifdef PNG_gAMA_SUPPORTED
-# ifdef PNG_FIXED_POINT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_gAMA_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_fixed_point *file_gamma)
-{
- png_debug1(1, "in %s retrieval function", "gAMA");
-
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) &&
- file_gamma != NULL)
- {
- *file_gamma = info_ptr->colorspace.gamma;
- return (PNG_INFO_gAMA);
- }
-
- return (0);
-}
-# endif
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_gAMA(png_const_structrp png_ptr, png_const_inforp info_ptr,
- double *file_gamma)
-{
- png_debug1(1, "in %s retrieval function", "gAMA(float)");
-
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) &&
- file_gamma != NULL)
- {
- *file_gamma = png_float(png_ptr, info_ptr->colorspace.gamma,
- "png_get_gAMA");
- return (PNG_INFO_gAMA);
- }
-
- return (0);
-}
-# endif
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
-png_uint_32 PNGAPI
-png_get_sRGB(png_const_structrp png_ptr, png_const_inforp info_ptr,
- int *file_srgb_intent)
-{
- png_debug1(1, "in %s retrieval function", "sRGB");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sRGB)
- && file_srgb_intent != NULL)
- {
- *file_srgb_intent = info_ptr->colorspace.rendering_intent;
- return (PNG_INFO_sRGB);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
-png_uint_32 PNGAPI
-png_get_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
- png_charpp name, int *compression_type,
- png_bytepp profile, png_uint_32 *proflen)
-{
- png_debug1(1, "in %s retrieval function", "iCCP");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_iCCP)
- && name != NULL && compression_type != NULL && profile != NULL &&
- proflen != NULL)
- {
- *name = info_ptr->iccp_name;
- *profile = info_ptr->iccp_profile;
- *proflen = png_get_uint_32(info_ptr->iccp_profile);
- /* This is somewhat irrelevant since the profile data returned has
- * actually been uncompressed.
- */
- *compression_type = PNG_COMPRESSION_TYPE_BASE;
- return (PNG_INFO_iCCP);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
-int PNGAPI
-png_get_sPLT(png_const_structrp png_ptr, png_inforp info_ptr,
- png_sPLT_tpp spalettes)
-{
- if (png_ptr != NULL && info_ptr != NULL && spalettes != NULL)
- {
- *spalettes = info_ptr->splt_palettes;
- return info_ptr->splt_palettes_num;
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
-png_uint_32 PNGAPI
-png_get_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
- png_uint_16p *hist)
-{
- png_debug1(1, "in %s retrieval function", "hIST");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST)
- && hist != NULL)
- {
- *hist = info_ptr->hist;
- return (PNG_INFO_hIST);
- }
-
- return (0);
-}
-#endif
-
-png_uint_32 PNGAPI
-png_get_IHDR(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_uint_32 *width, png_uint_32 *height, int *bit_depth,
- int *color_type, int *interlace_type, int *compression_type,
- int *filter_type)
-{
- png_debug1(1, "in %s retrieval function", "IHDR");
-
- if (png_ptr == NULL || info_ptr == NULL || width == NULL ||
- height == NULL || bit_depth == NULL || color_type == NULL)
- return (0);
-
- *width = info_ptr->width;
- *height = info_ptr->height;
- *bit_depth = info_ptr->bit_depth;
- *color_type = info_ptr->color_type;
-
- if (compression_type != NULL)
- *compression_type = info_ptr->compression_type;
-
- if (filter_type != NULL)
- *filter_type = info_ptr->filter_type;
-
- if (interlace_type != NULL)
- *interlace_type = info_ptr->interlace_type;
-
- /* This is redundant if we can be sure that the info_ptr values were all
- * assigned in png_set_IHDR(). We do the check anyhow in case an
- * application has ignored our advice not to mess with the members
- * of info_ptr directly.
- */
- png_check_IHDR(png_ptr, info_ptr->width, info_ptr->height,
- info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
- info_ptr->compression_type, info_ptr->filter_type);
-
- return (1);
-}
-
-#ifdef PNG_oFFs_SUPPORTED
-png_uint_32 PNGAPI
-png_get_oFFs(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_int_32 *offset_x, png_int_32 *offset_y, int *unit_type)
-{
- png_debug1(1, "in %s retrieval function", "oFFs");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs)
- && offset_x != NULL && offset_y != NULL && unit_type != NULL)
- {
- *offset_x = info_ptr->x_offset;
- *offset_y = info_ptr->y_offset;
- *unit_type = (int)info_ptr->offset_unit_type;
- return (PNG_INFO_oFFs);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
-png_uint_32 PNGAPI
-png_get_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
- png_charp *purpose, png_int_32 *X0, png_int_32 *X1, int *type, int *nparams,
- png_charp *units, png_charpp *params)
-{
- png_debug1(1, "in %s retrieval function", "pCAL");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL)
- && purpose != NULL && X0 != NULL && X1 != NULL && type != NULL &&
- nparams != NULL && units != NULL && params != NULL)
- {
- *purpose = info_ptr->pcal_purpose;
- *X0 = info_ptr->pcal_X0;
- *X1 = info_ptr->pcal_X1;
- *type = (int)info_ptr->pcal_type;
- *nparams = (int)info_ptr->pcal_nparams;
- *units = info_ptr->pcal_units;
- *params = info_ptr->pcal_params;
- return (PNG_INFO_pCAL);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
-# ifdef PNG_FIXED_POINT_SUPPORTED
-# if defined(PNG_FLOATING_ARITHMETIC_SUPPORTED) || \
- defined(PNG_FLOATING_POINT_SUPPORTED)
-png_uint_32 PNGAPI
-png_get_sCAL_fixed(png_const_structrp png_ptr, png_const_inforp info_ptr,
- int *unit, png_fixed_point *width, png_fixed_point *height)
-{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
- {
- *unit = info_ptr->scal_unit;
- /*TODO: make this work without FP support; the API is currently eliminated
- * if neither floating point APIs nor internal floating point arithmetic
- * are enabled.
- */
- *width = png_fixed(png_ptr, atof(info_ptr->scal_s_width), "sCAL width");
- *height = png_fixed(png_ptr, atof(info_ptr->scal_s_height),
- "sCAL height");
- return (PNG_INFO_sCAL);
- }
-
- return(0);
-}
-# endif /* FLOATING_ARITHMETIC */
-# endif /* FIXED_POINT */
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_sCAL(png_const_structrp png_ptr, png_const_inforp info_ptr,
- int *unit, double *width, double *height)
-{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
- {
- *unit = info_ptr->scal_unit;
- *width = atof(info_ptr->scal_s_width);
- *height = atof(info_ptr->scal_s_height);
- return (PNG_INFO_sCAL);
- }
-
- return(0);
-}
-# endif /* FLOATING POINT */
-png_uint_32 PNGAPI
-png_get_sCAL_s(png_const_structrp png_ptr, png_const_inforp info_ptr,
- int *unit, png_charpp width, png_charpp height)
-{
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_sCAL))
- {
- *unit = info_ptr->scal_unit;
- *width = info_ptr->scal_s_width;
- *height = info_ptr->scal_s_height;
- return (PNG_INFO_sCAL);
- }
-
- return(0);
-}
-#endif /* sCAL */
-
-#ifdef PNG_pHYs_SUPPORTED
-png_uint_32 PNGAPI
-png_get_pHYs(png_const_structrp png_ptr, png_const_inforp info_ptr,
- png_uint_32 *res_x, png_uint_32 *res_y, int *unit_type)
-{
- png_uint_32 retval = 0;
-
- png_debug1(1, "in %s retrieval function", "pHYs");
-
- if (png_ptr != NULL && info_ptr != NULL &&
- (info_ptr->valid & PNG_INFO_pHYs))
- {
- if (res_x != NULL)
- {
- *res_x = info_ptr->x_pixels_per_unit;
- retval |= PNG_INFO_pHYs;
- }
-
- if (res_y != NULL)
- {
- *res_y = info_ptr->y_pixels_per_unit;
- retval |= PNG_INFO_pHYs;
- }
-
- if (unit_type != NULL)
- {
- *unit_type = (int)info_ptr->phys_unit_type;
- retval |= PNG_INFO_pHYs;
- }
- }
-
- return (retval);
-}
-#endif /* pHYs */
-
-png_uint_32 PNGAPI
-png_get_PLTE(png_const_structrp png_ptr, png_inforp info_ptr,
- png_colorp *palette, int *num_palette)
-{
- png_debug1(1, "in %s retrieval function", "PLTE");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_PLTE)
- && palette != NULL)
- {
- *palette = info_ptr->palette;
- *num_palette = info_ptr->num_palette;
- png_debug1(3, "num_palette = %d", *num_palette);
- return (PNG_INFO_PLTE);
- }
-
- return (0);
-}
-
-#ifdef PNG_sBIT_SUPPORTED
-png_uint_32 PNGAPI
-png_get_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
- png_color_8p *sig_bit)
-{
- png_debug1(1, "in %s retrieval function", "sBIT");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT)
- && sig_bit != NULL)
- {
- *sig_bit = &(info_ptr->sig_bit);
- return (PNG_INFO_sBIT);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
-int PNGAPI
-png_get_text(png_const_structrp png_ptr, png_inforp info_ptr,
- png_textp *text_ptr, int *num_text)
-{
- if (png_ptr != NULL && info_ptr != NULL && info_ptr->num_text > 0)
- {
- png_debug1(1, "in 0x%lx retrieval function",
- (unsigned long)png_ptr->chunk_name);
-
- if (text_ptr != NULL)
- *text_ptr = info_ptr->text;
-
- if (num_text != NULL)
- *num_text = info_ptr->num_text;
-
- return info_ptr->num_text;
- }
-
- if (num_text != NULL)
- *num_text = 0;
-
- return(0);
-}
-#endif
-
-#ifdef PNG_tIME_SUPPORTED
-png_uint_32 PNGAPI
-png_get_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
- png_timep *mod_time)
-{
- png_debug1(1, "in %s retrieval function", "tIME");
-
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME)
- && mod_time != NULL)
- {
- *mod_time = &(info_ptr->mod_time);
- return (PNG_INFO_tIME);
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_tRNS_SUPPORTED
-png_uint_32 PNGAPI
-png_get_tRNS(png_const_structrp png_ptr, png_inforp info_ptr,
- png_bytep *trans_alpha, int *num_trans, png_color_16p *trans_color)
-{
- png_uint_32 retval = 0;
- if (png_ptr != NULL && info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
- {
- png_debug1(1, "in %s retrieval function", "tRNS");
-
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (trans_alpha != NULL)
- {
- *trans_alpha = info_ptr->trans_alpha;
- retval |= PNG_INFO_tRNS;
- }
-
- if (trans_color != NULL)
- *trans_color = &(info_ptr->trans_color);
- }
-
- else /* if (info_ptr->color_type != PNG_COLOR_TYPE_PALETTE) */
- {
- if (trans_color != NULL)
- {
- *trans_color = &(info_ptr->trans_color);
- retval |= PNG_INFO_tRNS;
- }
-
- if (trans_alpha != NULL)
- *trans_alpha = NULL;
- }
-
- if (num_trans != NULL)
- {
- *num_trans = info_ptr->num_trans;
- retval |= PNG_INFO_tRNS;
- }
- }
-
- return (retval);
-}
-#endif
-
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-int PNGAPI
-png_get_unknown_chunks(png_const_structrp png_ptr, png_inforp info_ptr,
- png_unknown_chunkpp unknowns)
-{
- if (png_ptr != NULL && info_ptr != NULL && unknowns != NULL)
- {
- *unknowns = info_ptr->unknown_chunks;
- return info_ptr->unknown_chunks_num;
- }
-
- return (0);
-}
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-png_byte PNGAPI
-png_get_rgb_to_gray_status (png_const_structrp png_ptr)
-{
- return (png_byte)(png_ptr ? png_ptr->rgb_to_gray_status : 0);
-}
-#endif
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
-png_voidp PNGAPI
-png_get_user_chunk_ptr(png_const_structrp png_ptr)
-{
- return (png_ptr ? png_ptr->user_chunk_ptr : NULL);
-}
-#endif
-
-png_size_t PNGAPI
-png_get_compression_buffer_size(png_const_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return 0;
-
-# ifdef PNG_WRITE_SUPPORTED
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
-# endif
- {
-# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
- return png_ptr->IDAT_read_size;
-# else
- return PNG_IDAT_READ_SIZE;
-# endif
- }
-
-# ifdef PNG_WRITE_SUPPORTED
- else
- return png_ptr->zbuffer_size;
-# endif
-}
-
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-/* These functions were added to libpng 1.2.6 and were enabled
- * by default in libpng-1.4.0 */
-png_uint_32 PNGAPI
-png_get_user_width_max (png_const_structrp png_ptr)
-{
- return (png_ptr ? png_ptr->user_width_max : 0);
-}
-
-png_uint_32 PNGAPI
-png_get_user_height_max (png_const_structrp png_ptr)
-{
- return (png_ptr ? png_ptr->user_height_max : 0);
-}
-
-/* This function was added to libpng 1.4.0 */
-png_uint_32 PNGAPI
-png_get_chunk_cache_max (png_const_structrp png_ptr)
-{
- return (png_ptr ? png_ptr->user_chunk_cache_max : 0);
-}
-
-/* This function was added to libpng 1.4.1 */
-png_alloc_size_t PNGAPI
-png_get_chunk_malloc_max (png_const_structrp png_ptr)
-{
- return (png_ptr ? png_ptr->user_chunk_malloc_max : 0);
-}
-#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
-
-/* These functions were added to libpng 1.4.0 */
-#ifdef PNG_IO_STATE_SUPPORTED
-png_uint_32 PNGAPI
-png_get_io_state (png_const_structrp png_ptr)
-{
- return png_ptr->io_state;
-}
-
-png_uint_32 PNGAPI
-png_get_io_chunk_type (png_const_structrp png_ptr)
-{
- return png_ptr->chunk_name;
-}
-#endif /* ?PNG_IO_STATE_SUPPORTED */
-
-#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
-# ifdef PNG_GET_PALETTE_MAX_SUPPORTED
-int PNGAPI
-png_get_palette_max(png_const_structp png_ptr, png_const_infop info_ptr)
-{
- if (png_ptr != NULL && info_ptr != NULL)
- return png_ptr->num_palette_max;
-
- return (-1);
-}
-# endif
-#endif
-
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pnginfo.h - header file for PNG reference library
- *
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.6.1 [March 28, 2013]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
- /* png_info is a structure that holds the information in a PNG file so
- * that the application can find out the characteristics of the image.
- * If you are reading the file, this structure will tell you what is
- * in the PNG file. If you are writing the file, fill in the information
- * you want to put into the PNG file, using png_set_*() functions, then
- * call png_write_info().
- *
- * The names chosen should be very close to the PNG specification, so
- * consult that document for information about the meaning of each field.
- *
- * With libpng < 0.95, it was only possible to directly set and read the
- * the values in the png_info_struct, which meant that the contents and
- * order of the values had to remain fixed. With libpng 0.95 and later,
- * however, there are now functions that abstract the contents of
- * png_info_struct from the application, so this makes it easier to use
- * libpng with dynamic libraries, and even makes it possible to use
- * libraries that don't have all of the libpng ancillary chunk-handing
- * functionality. In libpng-1.5.0 this was moved into a separate private
- * file that is not visible to applications.
- *
- * The following members may have allocated storage attached that should be
- * cleaned up before the structure is discarded: palette, trans, text,
- * pcal_purpose, pcal_units, pcal_params, hist, iccp_name, iccp_profile,
- * splt_palettes, scal_unit, row_pointers, and unknowns. By default, these
- * are automatically freed when the info structure is deallocated, if they were
- * allocated internally by libpng. This behavior can be changed by means
- * of the png_data_freer() function.
- *
- * More allocation details: all the chunk-reading functions that
- * change these members go through the corresponding png_set_*
- * functions. A function to clear these members is available: see
- * png_free_data(). The png_set_* functions do not depend on being
- * able to point info structure members to any of the storage they are
- * passed (they make their own copies), EXCEPT that the png_set_text
- * functions use the same storage passed to them in the text_ptr or
- * itxt_ptr structure argument, and the png_set_rows and png_set_unknowns
- * functions do not make their own copies.
- */
-#ifndef PNGINFO_H
-#define PNGINFO_H
-
-struct png_info_def
-{
- /* The following are necessary for every PNG file */
- png_uint_32 width; /* width of image in pixels (from IHDR) */
- png_uint_32 height; /* height of image in pixels (from IHDR) */
- png_uint_32 valid; /* valid chunk data (see PNG_INFO_ below) */
- png_size_t rowbytes; /* bytes needed to hold an untransformed row */
- png_colorp palette; /* array of color values (valid & PNG_INFO_PLTE) */
- png_uint_16 num_palette; /* number of color entries in "palette" (PLTE) */
- png_uint_16 num_trans; /* number of transparent palette color (tRNS) */
- png_byte bit_depth; /* 1, 2, 4, 8, or 16 bits/channel (from IHDR) */
- png_byte color_type; /* see PNG_COLOR_TYPE_ below (from IHDR) */
- /* The following three should have been named *_method not *_type */
- png_byte compression_type; /* must be PNG_COMPRESSION_TYPE_BASE (IHDR) */
- png_byte filter_type; /* must be PNG_FILTER_TYPE_BASE (from IHDR) */
- png_byte interlace_type; /* One of PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
-
- /* The following are set by png_set_IHDR, called from the application on
- * write, but the are never actually used by the write code.
- */
- png_byte channels; /* number of data channels per pixel (1, 2, 3, 4) */
- png_byte pixel_depth; /* number of bits per pixel */
- png_byte spare_byte; /* to align the data, and for future use */
-
-#ifdef PNG_READ_SUPPORTED
- /* This is never set during write */
- png_byte signature[8]; /* magic bytes read by libpng from start of file */
-#endif
-
- /* The rest of the data is optional. If you are reading, check the
- * valid field to see if the information in these are valid. If you
- * are writing, set the valid field to those chunks you want written,
- * and initialize the appropriate fields below.
- */
-
-#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
- /* png_colorspace only contains 'flags' if neither GAMMA or COLORSPACE are
- * defined. When COLORSPACE is switched on all the colorspace-defining
- * chunks should be enabled, when GAMMA is switched on all the gamma-defining
- * chunks should be enabled. If this is not done it becomes possible to read
- * inconsistent PNG files and assign a probably incorrect interpretation to
- * the information. (In other words, by carefully choosing which chunks to
- * recognize the system configuration can select an interpretation for PNG
- * files containing ambiguous data and this will result in inconsistent
- * behavior between different libpng builds!)
- */
- png_colorspace colorspace;
-#endif
-
-#ifdef PNG_iCCP_SUPPORTED
- /* iCCP chunk data. */
- png_charp iccp_name; /* profile name */
- png_bytep iccp_profile; /* International Color Consortium profile data */
- png_uint_32 iccp_proflen; /* ICC profile data length */
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
- /* The tEXt, and zTXt chunks contain human-readable textual data in
- * uncompressed, compressed, and optionally compressed forms, respectively.
- * The data in "text" is an array of pointers to uncompressed,
- * null-terminated C strings. Each chunk has a keyword that describes the
- * textual data contained in that chunk. Keywords are not required to be
- * unique, and the text string may be empty. Any number of text chunks may
- * be in an image.
- */
- int num_text; /* number of comments read or comments to write */
- int max_text; /* current size of text array */
- png_textp text; /* array of comments read or comments to write */
-#endif /* PNG_TEXT_SUPPORTED */
-
-#ifdef PNG_tIME_SUPPORTED
- /* The tIME chunk holds the last time the displayed image data was
- * modified. See the png_time struct for the contents of this struct.
- */
- png_time mod_time;
-#endif
-
-#ifdef PNG_sBIT_SUPPORTED
- /* The sBIT chunk specifies the number of significant high-order bits
- * in the pixel data. Values are in the range [1, bit_depth], and are
- * only specified for the channels in the pixel data. The contents of
- * the low-order bits is not specified. Data is valid if
- * (valid & PNG_INFO_sBIT) is non-zero.
- */
- png_color_8 sig_bit; /* significant bits in color channels */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_EXPAND_SUPPORTED) || \
-defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* The tRNS chunk supplies transparency data for paletted images and
- * other image types that don't need a full alpha channel. There are
- * "num_trans" transparency values for a paletted image, stored in the
- * same order as the palette colors, starting from index 0. Values
- * for the data are in the range [0, 255], ranging from fully transparent
- * to fully opaque, respectively. For non-paletted images, there is a
- * single color specified that should be treated as fully transparent.
- * Data is valid if (valid & PNG_INFO_tRNS) is non-zero.
- */
- png_bytep trans_alpha; /* alpha values for paletted image */
- png_color_16 trans_color; /* transparent color for non-palette image */
-#endif
-
-#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* The bKGD chunk gives the suggested image background color if the
- * display program does not have its own background color and the image
- * is needs to composited onto a background before display. The colors
- * in "background" are normally in the same color space/depth as the
- * pixel data. Data is valid if (valid & PNG_INFO_bKGD) is non-zero.
- */
- png_color_16 background;
-#endif
-
-#ifdef PNG_oFFs_SUPPORTED
- /* The oFFs chunk gives the offset in "offset_unit_type" units rightwards
- * and downwards from the top-left corner of the display, page, or other
- * application-specific co-ordinate space. See the PNG_OFFSET_ defines
- * below for the unit types. Valid if (valid & PNG_INFO_oFFs) non-zero.
- */
- png_int_32 x_offset; /* x offset on page */
- png_int_32 y_offset; /* y offset on page */
- png_byte offset_unit_type; /* offset units type */
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
- /* The pHYs chunk gives the physical pixel density of the image for
- * display or printing in "phys_unit_type" units (see PNG_RESOLUTION_
- * defines below). Data is valid if (valid & PNG_INFO_pHYs) is non-zero.
- */
- png_uint_32 x_pixels_per_unit; /* horizontal pixel density */
- png_uint_32 y_pixels_per_unit; /* vertical pixel density */
- png_byte phys_unit_type; /* resolution type (see PNG_RESOLUTION_ below) */
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
- /* The hIST chunk contains the relative frequency or importance of the
- * various palette entries, so that a viewer can intelligently select a
- * reduced-color palette, if required. Data is an array of "num_palette"
- * values in the range [0,65535]. Data valid if (valid & PNG_INFO_hIST)
- * is non-zero.
- */
- png_uint_16p hist;
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
- /* The pCAL chunk describes a transformation between the stored pixel
- * values and original physical data values used to create the image.
- * The integer range [0, 2^bit_depth - 1] maps to the floating-point
- * range given by [pcal_X0, pcal_X1], and are further transformed by a
- * (possibly non-linear) transformation function given by "pcal_type"
- * and "pcal_params" into "pcal_units". Please see the PNG_EQUATION_
- * defines below, and the PNG-Group's PNG extensions document for a
- * complete description of the transformations and how they should be
- * implemented, and for a description of the ASCII parameter strings.
- * Data values are valid if (valid & PNG_INFO_pCAL) non-zero.
- */
- png_charp pcal_purpose; /* pCAL chunk description string */
- png_int_32 pcal_X0; /* minimum value */
- png_int_32 pcal_X1; /* maximum value */
- png_charp pcal_units; /* Latin-1 string giving physical units */
- png_charpp pcal_params; /* ASCII strings containing parameter values */
- png_byte pcal_type; /* equation type (see PNG_EQUATION_ below) */
- png_byte pcal_nparams; /* number of parameters given in pcal_params */
-#endif
-
-/* New members added in libpng-1.0.6 */
- png_uint_32 free_me; /* flags items libpng is responsible for freeing */
-
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
- /* Storage for unknown chunks that the library doesn't recognize. */
- png_unknown_chunkp unknown_chunks;
-
- /* The type of this field is limited by the type of
- * png_struct::user_chunk_cache_max, else overflow can occur.
- */
- int unknown_chunks_num;
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
- /* Data on sPLT chunks (there may be more than one). */
- png_sPLT_tp splt_palettes;
- int splt_palettes_num; /* Match type returned by png_get API */
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
- /* The sCAL chunk describes the actual physical dimensions of the
- * subject matter of the graphic. The chunk contains a unit specification
- * a byte value, and two ASCII strings representing floating-point
- * values. The values are width and height corresponsing to one pixel
- * in the image. Data values are valid if (valid & PNG_INFO_sCAL) is
- * non-zero.
- */
- png_byte scal_unit; /* unit of physical scale */
- png_charp scal_s_width; /* string containing height */
- png_charp scal_s_height; /* string containing width */
-#endif
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
- /* Memory has been allocated if (valid & PNG_ALLOCATED_INFO_ROWS)
- non-zero */
- /* Data valid if (valid & PNG_INFO_IDAT) non-zero */
- png_bytepp row_pointers; /* the image bits */
-#endif
-
-};
-#endif /* PNGINFO_H */
+++ /dev/null
-
-/* pngmem.c - stub functions for memory allocation
- *
- * Last changed in libpng 1.6.0 [February 14, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file provides a location for all memory allocation. Users who
- * need special memory handling are expected to supply replacement
- * functions for png_malloc() and png_free(), and to use
- * png_create_read_struct_2() and png_create_write_struct_2() to
- * identify the replacement functions.
- */
-
-#include "pngpriv.h"
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-/* Free a png_struct */
-void /* PRIVATE */
-png_destroy_png_struct(png_structrp png_ptr)
-{
- if (png_ptr != NULL)
- {
- /* png_free might call png_error and may certainly call
- * png_get_mem_ptr, so fake a temporary png_struct to support this.
- */
- png_struct dummy_struct = *png_ptr;
- memset(png_ptr, 0, (sizeof *png_ptr));
- png_free(&dummy_struct, png_ptr);
-
-# ifdef PNG_SETJMP_SUPPORTED
- /* We may have a jmp_buf left to deallocate. */
- png_free_jmpbuf(&dummy_struct);
-# endif
- }
-}
-
-/* Allocate memory. For reasonable files, size should never exceed
- * 64K. However, zlib may allocate more then 64K if you don't tell
- * it not to. See zconf.h and png.h for more information. zlib does
- * need to allocate exactly 64K, so whatever you call here must
- * have the ability to do that.
- */
-PNG_FUNCTION(png_voidp,PNGAPI
-png_calloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
-{
- png_voidp ret;
-
- ret = png_malloc(png_ptr, size);
-
- if (ret != NULL)
- memset(ret, 0, size);
-
- return ret;
-}
-
-/* png_malloc_base, an internal function added at libpng 1.6.0, does the work of
- * allocating memory, taking into account limits and PNG_USER_MEM_SUPPORTED.
- * Checking and error handling must happen outside this routine; it returns NULL
- * if the allocation cannot be done (for any reason.)
- */
-PNG_FUNCTION(png_voidp /* PRIVATE */,
-png_malloc_base,(png_const_structrp png_ptr, png_alloc_size_t size),
- PNG_ALLOCATED)
-{
- /* Moved to png_malloc_base from png_malloc_default in 1.6.0; the DOS
- * allocators have also been removed in 1.6.0, so any 16-bit system now has
- * to implement a user memory handler. This checks to be sure it isn't
- * called with big numbers.
- */
-#ifdef PNG_USER_MEM_SUPPORTED
- PNG_UNUSED(png_ptr)
-#endif
- if (size > 0 && size <= PNG_SIZE_MAX
-# ifdef PNG_MAX_MALLOC_64K
- && size <= 65536U
-# endif
- )
- {
-#ifdef PNG_USER_MEM_SUPPORTED
- if (png_ptr != NULL && png_ptr->malloc_fn != NULL)
- return png_ptr->malloc_fn(png_constcast(png_structrp,png_ptr), size);
-
- else
-#endif
- return malloc((size_t)size); /* checked for truncation above */
- }
-
- else
- return NULL;
-}
-
-/* This is really here only to work round a spurious warning in GCC 4.6 and 4.7
- * that arises because of the checks in png_realloc_array that are repeated in
- * png_malloc_array.
- */
-static png_voidp
-png_malloc_array_checked(png_const_structrp png_ptr, int nelements,
- size_t element_size)
-{
- png_alloc_size_t req = nelements; /* known to be > 0 */
-
- if (req <= PNG_SIZE_MAX/element_size)
- return png_malloc_base(png_ptr, req * element_size);
-
- /* The failure case when the request is too large */
- return NULL;
-}
-
-PNG_FUNCTION(png_voidp /* PRIVATE */,
-png_malloc_array,(png_const_structrp png_ptr, int nelements,
- size_t element_size),PNG_ALLOCATED)
-{
- if (nelements <= 0 || element_size == 0)
- png_error(png_ptr, "internal error: array alloc");
-
- return png_malloc_array_checked(png_ptr, nelements, element_size);
-}
-
-PNG_FUNCTION(png_voidp /* PRIVATE */,
-png_realloc_array,(png_const_structrp png_ptr, png_const_voidp old_array,
- int old_elements, int add_elements, size_t element_size),PNG_ALLOCATED)
-{
- /* These are internal errors: */
- if (add_elements <= 0 || element_size == 0 || old_elements < 0 ||
- (old_array == NULL && old_elements > 0))
- png_error(png_ptr, "internal error: array realloc");
-
- /* Check for overflow on the elements count (so the caller does not have to
- * check.)
- */
- if (add_elements <= INT_MAX - old_elements)
- {
- png_voidp new_array = png_malloc_array_checked(png_ptr,
- old_elements+add_elements, element_size);
-
- if (new_array != NULL)
- {
- /* Because png_malloc_array worked the size calculations below cannot
- * overflow.
- */
- if (old_elements > 0)
- memcpy(new_array, old_array, element_size*(unsigned)old_elements);
-
- memset((char*)new_array + element_size*(unsigned)old_elements, 0,
- element_size*(unsigned)add_elements);
-
- return new_array;
- }
- }
-
- return NULL; /* error */
-}
-
-/* Various functions that have different error handling are derived from this.
- * png_malloc always exists, but if PNG_USER_MEM_SUPPORTED is defined a separate
- * function png_malloc_default is also provided.
- */
-PNG_FUNCTION(png_voidp,PNGAPI
-png_malloc,(png_const_structrp png_ptr, png_alloc_size_t size),PNG_ALLOCATED)
-{
- png_voidp ret;
-
- if (png_ptr == NULL)
- return NULL;
-
- ret = png_malloc_base(png_ptr, size);
-
- if (ret == NULL)
- png_error(png_ptr, "Out of memory"); /* 'm' means png_malloc */
-
- return ret;
-}
-
-#ifdef PNG_USER_MEM_SUPPORTED
-PNG_FUNCTION(png_voidp,PNGAPI
-png_malloc_default,(png_const_structrp png_ptr, png_alloc_size_t size),
- PNG_ALLOCATED PNG_DEPRECATED)
-{
- png_voidp ret;
-
- if (png_ptr == NULL)
- return NULL;
-
- /* Passing 'NULL' here bypasses the application provided memory handler. */
- ret = png_malloc_base(NULL/*use malloc*/, size);
-
- if (ret == NULL)
- png_error(png_ptr, "Out of Memory"); /* 'M' means png_malloc_default */
-
- return ret;
-}
-#endif /* PNG_USER_MEM_SUPPORTED */
-
-/* This function was added at libpng version 1.2.3. The png_malloc_warn()
- * function will issue a png_warning and return NULL instead of issuing a
- * png_error, if it fails to allocate the requested memory.
- */
-PNG_FUNCTION(png_voidp,PNGAPI
-png_malloc_warn,(png_const_structrp png_ptr, png_alloc_size_t size),
- PNG_ALLOCATED)
-{
- if (png_ptr != NULL)
- {
- png_voidp ret = png_malloc_base(png_ptr, size);
-
- if (ret != NULL)
- return ret;
-
- png_warning(png_ptr, "Out of memory");
- }
-
- return NULL;
-}
-
-/* Free a pointer allocated by png_malloc(). If ptr is NULL, return
- * without taking any action.
- */
-void PNGAPI
-png_free(png_const_structrp png_ptr, png_voidp ptr)
-{
- if (png_ptr == NULL || ptr == NULL)
- return;
-
-#ifdef PNG_USER_MEM_SUPPORTED
- if (png_ptr->free_fn != NULL)
- png_ptr->free_fn(png_constcast(png_structrp,png_ptr), ptr);
-
- else
- png_free_default(png_ptr, ptr);
-}
-
-PNG_FUNCTION(void,PNGAPI
-png_free_default,(png_const_structrp png_ptr, png_voidp ptr),PNG_DEPRECATED)
-{
- if (png_ptr == NULL || ptr == NULL)
- return;
-#endif /* PNG_USER_MEM_SUPPORTED */
-
- free(ptr);
-}
-
-#ifdef PNG_USER_MEM_SUPPORTED
-/* This function is called when the application wants to use another method
- * of allocating and freeing memory.
- */
-void PNGAPI
-png_set_mem_fn(png_structrp png_ptr, png_voidp mem_ptr, png_malloc_ptr
- malloc_fn, png_free_ptr free_fn)
-{
- if (png_ptr != NULL)
- {
- png_ptr->mem_ptr = mem_ptr;
- png_ptr->malloc_fn = malloc_fn;
- png_ptr->free_fn = free_fn;
- }
-}
-
-/* This function returns a pointer to the mem_ptr associated with the user
- * functions. The application should free any memory associated with this
- * pointer before png_write_destroy and png_read_destroy are called.
- */
-png_voidp PNGAPI
-png_get_mem_ptr(png_const_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return NULL;
-
- return png_ptr->mem_ptr;
-}
-#endif /* PNG_USER_MEM_SUPPORTED */
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pngpread.c - read a png file in push mode
- *
- * Last changed in libpng 1.6.0 [February 14, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-
-/* Push model modes */
-#define PNG_READ_SIG_MODE 0
-#define PNG_READ_CHUNK_MODE 1
-#define PNG_READ_IDAT_MODE 2
-#define PNG_SKIP_MODE 3
-#define PNG_READ_tEXt_MODE 4
-#define PNG_READ_zTXt_MODE 5
-#define PNG_READ_DONE_MODE 6
-#define PNG_READ_iTXt_MODE 7
-#define PNG_ERROR_MODE 8
-
-void PNGAPI
-png_process_data(png_structrp png_ptr, png_inforp info_ptr,
- png_bytep buffer, png_size_t buffer_size)
-{
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- png_push_restore_buffer(png_ptr, buffer, buffer_size);
-
- while (png_ptr->buffer_size)
- {
- png_process_some_data(png_ptr, info_ptr);
- }
-}
-
-png_size_t PNGAPI
-png_process_data_pause(png_structrp png_ptr, int save)
-{
- if (png_ptr != NULL)
- {
- /* It's easiest for the caller if we do the save, then the caller doesn't
- * have to supply the same data again:
- */
- if (save)
- png_push_save_buffer(png_ptr);
- else
- {
- /* This includes any pending saved bytes: */
- png_size_t remaining = png_ptr->buffer_size;
- png_ptr->buffer_size = 0;
-
- /* So subtract the saved buffer size, unless all the data
- * is actually 'saved', in which case we just return 0
- */
- if (png_ptr->save_buffer_size < remaining)
- return remaining - png_ptr->save_buffer_size;
- }
- }
-
- return 0;
-}
-
-png_uint_32 PNGAPI
-png_process_data_skip(png_structrp png_ptr)
-{
- png_uint_32 remaining = 0;
-
- if (png_ptr != NULL && png_ptr->process_mode == PNG_SKIP_MODE &&
- png_ptr->skip_length > 0)
- {
- /* At the end of png_process_data the buffer size must be 0 (see the loop
- * above) so we can detect a broken call here:
- */
- if (png_ptr->buffer_size != 0)
- png_error(png_ptr,
- "png_process_data_skip called inside png_process_data");
-
- /* If is impossible for there to be a saved buffer at this point -
- * otherwise we could not be in SKIP mode. This will also happen if
- * png_process_skip is called inside png_process_data (but only very
- * rarely.)
- */
- if (png_ptr->save_buffer_size != 0)
- png_error(png_ptr, "png_process_data_skip called with saved data");
-
- remaining = png_ptr->skip_length;
- png_ptr->skip_length = 0;
- png_ptr->process_mode = PNG_READ_CHUNK_MODE;
- }
-
- return remaining;
-}
-
-/* What we do with the incoming data depends on what we were previously
- * doing before we ran out of data...
- */
-void /* PRIVATE */
-png_process_some_data(png_structrp png_ptr, png_inforp info_ptr)
-{
- if (png_ptr == NULL)
- return;
-
- switch (png_ptr->process_mode)
- {
- case PNG_READ_SIG_MODE:
- {
- png_push_read_sig(png_ptr, info_ptr);
- break;
- }
-
- case PNG_READ_CHUNK_MODE:
- {
- png_push_read_chunk(png_ptr, info_ptr);
- break;
- }
-
- case PNG_READ_IDAT_MODE:
- {
- png_push_read_IDAT(png_ptr);
- break;
- }
-
- case PNG_SKIP_MODE:
- {
- png_push_crc_finish(png_ptr);
- break;
- }
-
- default:
- {
- png_ptr->buffer_size = 0;
- break;
- }
- }
-}
-
-/* Read any remaining signature bytes from the stream and compare them with
- * the correct PNG signature. It is possible that this routine is called
- * with bytes already read from the signature, either because they have been
- * checked by the calling application, or because of multiple calls to this
- * routine.
- */
-void /* PRIVATE */
-png_push_read_sig(png_structrp png_ptr, png_inforp info_ptr)
-{
- png_size_t num_checked = png_ptr->sig_bytes, /* SAFE, does not exceed 8 */
- num_to_check = 8 - num_checked;
-
- if (png_ptr->buffer_size < num_to_check)
- {
- num_to_check = png_ptr->buffer_size;
- }
-
- png_push_fill_buffer(png_ptr, &(info_ptr->signature[num_checked]),
- num_to_check);
- png_ptr->sig_bytes = (png_byte)(png_ptr->sig_bytes + num_to_check);
-
- if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
- {
- if (num_checked < 4 &&
- png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
- png_error(png_ptr, "Not a PNG file");
-
- else
- png_error(png_ptr, "PNG file corrupted by ASCII conversion");
- }
- else
- {
- if (png_ptr->sig_bytes >= 8)
- {
- png_ptr->process_mode = PNG_READ_CHUNK_MODE;
- }
- }
-}
-
-void /* PRIVATE */
-png_push_read_chunk(png_structrp png_ptr, png_inforp info_ptr)
-{
- png_uint_32 chunk_name;
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- int keep; /* unknown handling method */
-#endif
-
- /* First we make sure we have enough data for the 4 byte chunk name
- * and the 4 byte chunk length before proceeding with decoding the
- * chunk data. To fully decode each of these chunks, we also make
- * sure we have enough data in the buffer for the 4 byte CRC at the
- * end of every chunk (except IDAT, which is handled separately).
- */
- if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
- {
- png_byte chunk_length[4];
- png_byte chunk_tag[4];
-
- if (png_ptr->buffer_size < 8)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_push_fill_buffer(png_ptr, chunk_length, 4);
- png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
- png_reset_crc(png_ptr);
- png_crc_read(png_ptr, chunk_tag, 4);
- png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
- png_check_chunk_name(png_ptr, png_ptr->chunk_name);
- png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
- }
-
- chunk_name = png_ptr->chunk_name;
-
- if (chunk_name == png_IDAT)
- {
- if (png_ptr->mode & PNG_AFTER_IDAT)
- png_ptr->mode |= PNG_HAVE_CHUNK_AFTER_IDAT;
-
- /* If we reach an IDAT chunk, this means we have read all of the
- * header chunks, and we can start reading the image (or if this
- * is called after the image has been read - we have an error).
- */
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_error(png_ptr, "Missing IHDR before IDAT");
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE))
- png_error(png_ptr, "Missing PLTE before IDAT");
-
- png_ptr->mode |= PNG_HAVE_IDAT;
-
- if (!(png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
- if (png_ptr->push_length == 0)
- return;
-
- if (png_ptr->mode & PNG_AFTER_IDAT)
- png_benign_error(png_ptr, "Too many IDATs found");
- }
-
- if (chunk_name == png_IHDR)
- {
- if (png_ptr->push_length != 13)
- png_error(png_ptr, "Invalid IHDR length");
-
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_IHDR(png_ptr, info_ptr, png_ptr->push_length);
- }
-
- else if (chunk_name == png_IEND)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_IEND(png_ptr, info_ptr, png_ptr->push_length);
-
- png_ptr->process_mode = PNG_READ_DONE_MODE;
- png_push_have_end(png_ptr, info_ptr);
- }
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length, keep);
-
- if (chunk_name == png_PLTE)
- png_ptr->mode |= PNG_HAVE_PLTE;
- }
-
-#endif
- else if (chunk_name == png_PLTE)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
- png_handle_PLTE(png_ptr, info_ptr, png_ptr->push_length);
- }
-
- else if (chunk_name == png_IDAT)
- {
- png_ptr->idat_size = png_ptr->push_length;
- png_ptr->process_mode = PNG_READ_IDAT_MODE;
- png_push_have_info(png_ptr, info_ptr);
- png_ptr->zstream.avail_out =
- (uInt) PNG_ROWBYTES(png_ptr->pixel_depth,
- png_ptr->iwidth) + 1;
- png_ptr->zstream.next_out = png_ptr->row_buf;
- return;
- }
-
-#ifdef PNG_READ_gAMA_SUPPORTED
- else if (png_ptr->chunk_name == png_gAMA)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_gAMA(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_sBIT_SUPPORTED
- else if (png_ptr->chunk_name == png_sBIT)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_sBIT(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_cHRM_SUPPORTED
- else if (png_ptr->chunk_name == png_cHRM)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_cHRM(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_sRGB_SUPPORTED
- else if (chunk_name == png_sRGB)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_sRGB(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_iCCP_SUPPORTED
- else if (png_ptr->chunk_name == png_iCCP)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_iCCP(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_sPLT_SUPPORTED
- else if (chunk_name == png_sPLT)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_sPLT(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_tRNS_SUPPORTED
- else if (chunk_name == png_tRNS)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_tRNS(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_bKGD_SUPPORTED
- else if (chunk_name == png_bKGD)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_bKGD(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_hIST_SUPPORTED
- else if (chunk_name == png_hIST)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_hIST(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_pHYs_SUPPORTED
- else if (chunk_name == png_pHYs)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_pHYs(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_oFFs_SUPPORTED
- else if (chunk_name == png_oFFs)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_oFFs(png_ptr, info_ptr, png_ptr->push_length);
- }
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
- else if (chunk_name == png_pCAL)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_pCAL(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_sCAL_SUPPORTED
- else if (chunk_name == png_sCAL)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_sCAL(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_tIME_SUPPORTED
- else if (chunk_name == png_tIME)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_tIME(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_tEXt_SUPPORTED
- else if (chunk_name == png_tEXt)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_tEXt(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_zTXt_SUPPORTED
- else if (chunk_name == png_zTXt)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_zTXt(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
-#ifdef PNG_READ_iTXt_SUPPORTED
- else if (chunk_name == png_iTXt)
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_handle_iTXt(png_ptr, info_ptr, png_ptr->push_length);
- }
-
-#endif
- else
- {
- if (png_ptr->push_length + 4 > png_ptr->buffer_size)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
- png_handle_unknown(png_ptr, info_ptr, png_ptr->push_length,
- PNG_HANDLE_CHUNK_AS_DEFAULT);
- }
-
- png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
-}
-
-void /* PRIVATE */
-png_push_crc_skip(png_structrp png_ptr, png_uint_32 skip)
-{
- png_ptr->process_mode = PNG_SKIP_MODE;
- png_ptr->skip_length = skip;
-}
-
-void /* PRIVATE */
-png_push_crc_finish(png_structrp png_ptr)
-{
- if (png_ptr->skip_length && png_ptr->save_buffer_size)
- {
- png_size_t save_size = png_ptr->save_buffer_size;
- png_uint_32 skip_length = png_ptr->skip_length;
-
- /* We want the smaller of 'skip_length' and 'save_buffer_size', but
- * they are of different types and we don't know which variable has the
- * fewest bits. Carefully select the smaller and cast it to the type of
- * the larger - this cannot overflow. Do not cast in the following test
- * - it will break on either 16 or 64 bit platforms.
- */
- if (skip_length < save_size)
- save_size = (png_size_t)skip_length;
-
- else
- skip_length = (png_uint_32)save_size;
-
- png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
-
- png_ptr->skip_length -= skip_length;
- png_ptr->buffer_size -= save_size;
- png_ptr->save_buffer_size -= save_size;
- png_ptr->save_buffer_ptr += save_size;
- }
- if (png_ptr->skip_length && png_ptr->current_buffer_size)
- {
- png_size_t save_size = png_ptr->current_buffer_size;
- png_uint_32 skip_length = png_ptr->skip_length;
-
- /* We want the smaller of 'skip_length' and 'current_buffer_size', here,
- * the same problem exists as above and the same solution.
- */
- if (skip_length < save_size)
- save_size = (png_size_t)skip_length;
-
- else
- skip_length = (png_uint_32)save_size;
-
- png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
-
- png_ptr->skip_length -= skip_length;
- png_ptr->buffer_size -= save_size;
- png_ptr->current_buffer_size -= save_size;
- png_ptr->current_buffer_ptr += save_size;
- }
- if (!png_ptr->skip_length)
- {
- if (png_ptr->buffer_size < 4)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_crc_finish(png_ptr, 0);
- png_ptr->process_mode = PNG_READ_CHUNK_MODE;
- }
-}
-
-void PNGCBAPI
-png_push_fill_buffer(png_structp png_ptr, png_bytep buffer, png_size_t length)
-{
- png_bytep ptr;
-
- if (png_ptr == NULL)
- return;
-
- ptr = buffer;
- if (png_ptr->save_buffer_size)
- {
- png_size_t save_size;
-
- if (length < png_ptr->save_buffer_size)
- save_size = length;
-
- else
- save_size = png_ptr->save_buffer_size;
-
- memcpy(ptr, png_ptr->save_buffer_ptr, save_size);
- length -= save_size;
- ptr += save_size;
- png_ptr->buffer_size -= save_size;
- png_ptr->save_buffer_size -= save_size;
- png_ptr->save_buffer_ptr += save_size;
- }
- if (length && png_ptr->current_buffer_size)
- {
- png_size_t save_size;
-
- if (length < png_ptr->current_buffer_size)
- save_size = length;
-
- else
- save_size = png_ptr->current_buffer_size;
-
- memcpy(ptr, png_ptr->current_buffer_ptr, save_size);
- png_ptr->buffer_size -= save_size;
- png_ptr->current_buffer_size -= save_size;
- png_ptr->current_buffer_ptr += save_size;
- }
-}
-
-void /* PRIVATE */
-png_push_save_buffer(png_structrp png_ptr)
-{
- if (png_ptr->save_buffer_size)
- {
- if (png_ptr->save_buffer_ptr != png_ptr->save_buffer)
- {
- png_size_t i, istop;
- png_bytep sp;
- png_bytep dp;
-
- istop = png_ptr->save_buffer_size;
- for (i = 0, sp = png_ptr->save_buffer_ptr, dp = png_ptr->save_buffer;
- i < istop; i++, sp++, dp++)
- {
- *dp = *sp;
- }
- }
- }
- if (png_ptr->save_buffer_size + png_ptr->current_buffer_size >
- png_ptr->save_buffer_max)
- {
- png_size_t new_max;
- png_bytep old_buffer;
-
- if (png_ptr->save_buffer_size > PNG_SIZE_MAX -
- (png_ptr->current_buffer_size + 256))
- {
- png_error(png_ptr, "Potential overflow of save_buffer");
- }
-
- new_max = png_ptr->save_buffer_size + png_ptr->current_buffer_size + 256;
- old_buffer = png_ptr->save_buffer;
- png_ptr->save_buffer = (png_bytep)png_malloc_warn(png_ptr,
- (png_size_t)new_max);
-
- if (png_ptr->save_buffer == NULL)
- {
- png_free(png_ptr, old_buffer);
- png_error(png_ptr, "Insufficient memory for save_buffer");
- }
-
- memcpy(png_ptr->save_buffer, old_buffer, png_ptr->save_buffer_size);
- png_free(png_ptr, old_buffer);
- png_ptr->save_buffer_max = new_max;
- }
- if (png_ptr->current_buffer_size)
- {
- memcpy(png_ptr->save_buffer + png_ptr->save_buffer_size,
- png_ptr->current_buffer_ptr, png_ptr->current_buffer_size);
- png_ptr->save_buffer_size += png_ptr->current_buffer_size;
- png_ptr->current_buffer_size = 0;
- }
- png_ptr->save_buffer_ptr = png_ptr->save_buffer;
- png_ptr->buffer_size = 0;
-}
-
-void /* PRIVATE */
-png_push_restore_buffer(png_structrp png_ptr, png_bytep buffer,
- png_size_t buffer_length)
-{
- png_ptr->current_buffer = buffer;
- png_ptr->current_buffer_size = buffer_length;
- png_ptr->buffer_size = buffer_length + png_ptr->save_buffer_size;
- png_ptr->current_buffer_ptr = png_ptr->current_buffer;
-}
-
-void /* PRIVATE */
-png_push_read_IDAT(png_structrp png_ptr)
-{
- if (!(png_ptr->mode & PNG_HAVE_CHUNK_HEADER))
- {
- png_byte chunk_length[4];
- png_byte chunk_tag[4];
-
- /* TODO: this code can be commoned up with the same code in push_read */
- if (png_ptr->buffer_size < 8)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_push_fill_buffer(png_ptr, chunk_length, 4);
- png_ptr->push_length = png_get_uint_31(png_ptr, chunk_length);
- png_reset_crc(png_ptr);
- png_crc_read(png_ptr, chunk_tag, 4);
- png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(chunk_tag);
- png_ptr->mode |= PNG_HAVE_CHUNK_HEADER;
-
- if (png_ptr->chunk_name != png_IDAT)
- {
- png_ptr->process_mode = PNG_READ_CHUNK_MODE;
-
- if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
- png_error(png_ptr, "Not enough compressed data");
-
- return;
- }
-
- png_ptr->idat_size = png_ptr->push_length;
- }
-
- if (png_ptr->idat_size && png_ptr->save_buffer_size)
- {
- png_size_t save_size = png_ptr->save_buffer_size;
- png_uint_32 idat_size = png_ptr->idat_size;
-
- /* We want the smaller of 'idat_size' and 'current_buffer_size', but they
- * are of different types and we don't know which variable has the fewest
- * bits. Carefully select the smaller and cast it to the type of the
- * larger - this cannot overflow. Do not cast in the following test - it
- * will break on either 16 or 64 bit platforms.
- */
- if (idat_size < save_size)
- save_size = (png_size_t)idat_size;
-
- else
- idat_size = (png_uint_32)save_size;
-
- png_calculate_crc(png_ptr, png_ptr->save_buffer_ptr, save_size);
-
- png_process_IDAT_data(png_ptr, png_ptr->save_buffer_ptr, save_size);
-
- png_ptr->idat_size -= idat_size;
- png_ptr->buffer_size -= save_size;
- png_ptr->save_buffer_size -= save_size;
- png_ptr->save_buffer_ptr += save_size;
- }
-
- if (png_ptr->idat_size && png_ptr->current_buffer_size)
- {
- png_size_t save_size = png_ptr->current_buffer_size;
- png_uint_32 idat_size = png_ptr->idat_size;
-
- /* We want the smaller of 'idat_size' and 'current_buffer_size', but they
- * are of different types and we don't know which variable has the fewest
- * bits. Carefully select the smaller and cast it to the type of the
- * larger - this cannot overflow.
- */
- if (idat_size < save_size)
- save_size = (png_size_t)idat_size;
-
- else
- idat_size = (png_uint_32)save_size;
-
- png_calculate_crc(png_ptr, png_ptr->current_buffer_ptr, save_size);
-
- png_process_IDAT_data(png_ptr, png_ptr->current_buffer_ptr, save_size);
-
- png_ptr->idat_size -= idat_size;
- png_ptr->buffer_size -= save_size;
- png_ptr->current_buffer_size -= save_size;
- png_ptr->current_buffer_ptr += save_size;
- }
- if (!png_ptr->idat_size)
- {
- if (png_ptr->buffer_size < 4)
- {
- png_push_save_buffer(png_ptr);
- return;
- }
-
- png_crc_finish(png_ptr, 0);
- png_ptr->mode &= ~PNG_HAVE_CHUNK_HEADER;
- png_ptr->mode |= PNG_AFTER_IDAT;
- png_ptr->zowner = 0;
- }
-}
-
-void /* PRIVATE */
-png_process_IDAT_data(png_structrp png_ptr, png_bytep buffer,
- png_size_t buffer_length)
-{
- /* The caller checks for a non-zero buffer length. */
- if (!(buffer_length > 0) || buffer == NULL)
- png_error(png_ptr, "No IDAT data (internal error)");
-
- /* This routine must process all the data it has been given
- * before returning, calling the row callback as required to
- * handle the uncompressed results.
- */
- png_ptr->zstream.next_in = buffer;
- /* TODO: WARNING: TRUNCATION ERROR: DANGER WILL ROBINSON: */
- png_ptr->zstream.avail_in = (uInt)buffer_length;
-
- /* Keep going until the decompressed data is all processed
- * or the stream marked as finished.
- */
- while (png_ptr->zstream.avail_in > 0 &&
- !(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
- {
- int ret;
-
- /* We have data for zlib, but we must check that zlib
- * has someplace to put the results. It doesn't matter
- * if we don't expect any results -- it may be the input
- * data is just the LZ end code.
- */
- if (!(png_ptr->zstream.avail_out > 0))
- {
- /* TODO: WARNING: TRUNCATION ERROR: DANGER WILL ROBINSON: */
- png_ptr->zstream.avail_out = (uInt)(PNG_ROWBYTES(png_ptr->pixel_depth,
- png_ptr->iwidth) + 1);
-
- png_ptr->zstream.next_out = png_ptr->row_buf;
- }
-
- /* Using Z_SYNC_FLUSH here means that an unterminated
- * LZ stream (a stream with a missing end code) can still
- * be handled, otherwise (Z_NO_FLUSH) a future zlib
- * implementation might defer output and therefore
- * change the current behavior (see comments in inflate.c
- * for why this doesn't happen at present with zlib 1.2.5).
- */
- ret = inflate(&png_ptr->zstream, Z_SYNC_FLUSH);
-
- /* Check for any failure before proceeding. */
- if (ret != Z_OK && ret != Z_STREAM_END)
- {
- /* Terminate the decompression. */
- png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
- png_ptr->zowner = 0;
-
- /* This may be a truncated stream (missing or
- * damaged end code). Treat that as a warning.
- */
- if (png_ptr->row_number >= png_ptr->num_rows ||
- png_ptr->pass > 6)
- png_warning(png_ptr, "Truncated compressed data in IDAT");
-
- else
- png_error(png_ptr, "Decompression error in IDAT");
-
- /* Skip the check on unprocessed input */
- return;
- }
-
- /* Did inflate output any data? */
- if (png_ptr->zstream.next_out != png_ptr->row_buf)
- {
- /* Is this unexpected data after the last row?
- * If it is, artificially terminate the LZ output
- * here.
- */
- if (png_ptr->row_number >= png_ptr->num_rows ||
- png_ptr->pass > 6)
- {
- /* Extra data. */
- png_warning(png_ptr, "Extra compressed data in IDAT");
- png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
- png_ptr->zowner = 0;
-
- /* Do no more processing; skip the unprocessed
- * input check below.
- */
- return;
- }
-
- /* Do we have a complete row? */
- if (png_ptr->zstream.avail_out == 0)
- png_push_process_row(png_ptr);
- }
-
- /* And check for the end of the stream. */
- if (ret == Z_STREAM_END)
- png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
- }
-
- /* All the data should have been processed, if anything
- * is left at this point we have bytes of IDAT data
- * after the zlib end code.
- */
- if (png_ptr->zstream.avail_in > 0)
- png_warning(png_ptr, "Extra compression data in IDAT");
-}
-
-void /* PRIVATE */
-png_push_process_row(png_structrp png_ptr)
-{
- /* 1.5.6: row_info moved out of png_struct to a local here. */
- png_row_info row_info;
-
- row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */
- row_info.color_type = png_ptr->color_type;
- row_info.bit_depth = png_ptr->bit_depth;
- row_info.channels = png_ptr->channels;
- row_info.pixel_depth = png_ptr->pixel_depth;
- row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
-
- if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
- {
- if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
- png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
- png_ptr->prev_row + 1, png_ptr->row_buf[0]);
- else
- png_error(png_ptr, "bad adaptive filter value");
- }
-
- /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before
- * 1.5.6, while the buffer really is this big in current versions of libpng
- * it may not be in the future, so this was changed just to copy the
- * interlaced row count:
- */
- memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
- if (png_ptr->transformations)
- png_do_read_transformations(png_ptr, &row_info);
-#endif
-
- /* The transformed pixel depth should match the depth now in row_info. */
- if (png_ptr->transformed_pixel_depth == 0)
- {
- png_ptr->transformed_pixel_depth = row_info.pixel_depth;
- if (row_info.pixel_depth > png_ptr->maximum_pixel_depth)
- png_error(png_ptr, "progressive row overflow");
- }
-
- else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth)
- png_error(png_ptr, "internal progressive row size calculation error");
-
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* Blow up interlaced rows to full size */
- if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
- {
- if (png_ptr->pass < 6)
- png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
- png_ptr->transformations);
-
- switch (png_ptr->pass)
- {
- case 0:
- {
- int i;
- for (i = 0; i < 8 && png_ptr->pass == 0; i++)
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr); /* Updates png_ptr->pass */
- }
-
- if (png_ptr->pass == 2) /* Pass 1 might be empty */
- {
- for (i = 0; i < 4 && png_ptr->pass == 2; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
- }
-
- if (png_ptr->pass == 4 && png_ptr->height <= 4)
- {
- for (i = 0; i < 2 && png_ptr->pass == 4; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
- }
-
- if (png_ptr->pass == 6 && png_ptr->height <= 4)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
-
- break;
- }
-
- case 1:
- {
- int i;
- for (i = 0; i < 8 && png_ptr->pass == 1; i++)
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
- }
-
- if (png_ptr->pass == 2) /* Skip top 4 generated rows */
- {
- for (i = 0; i < 4 && png_ptr->pass == 2; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
- }
-
- break;
- }
-
- case 2:
- {
- int i;
-
- for (i = 0; i < 4 && png_ptr->pass == 2; i++)
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
- }
-
- for (i = 0; i < 4 && png_ptr->pass == 2; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
-
- if (png_ptr->pass == 4) /* Pass 3 might be empty */
- {
- for (i = 0; i < 2 && png_ptr->pass == 4; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
- }
-
- break;
- }
-
- case 3:
- {
- int i;
-
- for (i = 0; i < 4 && png_ptr->pass == 3; i++)
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
- }
-
- if (png_ptr->pass == 4) /* Skip top two generated rows */
- {
- for (i = 0; i < 2 && png_ptr->pass == 4; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
- }
-
- break;
- }
-
- case 4:
- {
- int i;
-
- for (i = 0; i < 2 && png_ptr->pass == 4; i++)
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
- }
-
- for (i = 0; i < 2 && png_ptr->pass == 4; i++)
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
-
- if (png_ptr->pass == 6) /* Pass 5 might be empty */
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
-
- break;
- }
-
- case 5:
- {
- int i;
-
- for (i = 0; i < 2 && png_ptr->pass == 5; i++)
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
- }
-
- if (png_ptr->pass == 6) /* Skip top generated row */
- {
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
-
- break;
- }
-
- default:
- case 6:
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
-
- if (png_ptr->pass != 6)
- break;
-
- png_push_have_row(png_ptr, NULL);
- png_read_push_finish_row(png_ptr);
- }
- }
- }
- else
-#endif
- {
- png_push_have_row(png_ptr, png_ptr->row_buf + 1);
- png_read_push_finish_row(png_ptr);
- }
-}
-
-void /* PRIVATE */
-png_read_push_finish_row(png_structrp png_ptr)
-{
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
- /* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[] = {0, 4, 0, 2, 0, 1, 0};
-
- /* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[] = {8, 8, 4, 4, 2, 2, 1};
-
- /* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[] = {0, 0, 4, 0, 2, 0, 1};
-
- /* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[] = {8, 8, 8, 4, 4, 2, 2};
-
- /* Height of interlace block. This is not currently used - if you need
- * it, uncomment it here and in png.h
- static PNG_CONST png_byte png_pass_height[] = {8, 8, 4, 4, 2, 2, 1};
- */
-#endif
-
- png_ptr->row_number++;
- if (png_ptr->row_number < png_ptr->num_rows)
- return;
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- if (png_ptr->interlaced)
- {
- png_ptr->row_number = 0;
- memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
-
- do
- {
- png_ptr->pass++;
- if ((png_ptr->pass == 1 && png_ptr->width < 5) ||
- (png_ptr->pass == 3 && png_ptr->width < 3) ||
- (png_ptr->pass == 5 && png_ptr->width < 2))
- png_ptr->pass++;
-
- if (png_ptr->pass > 7)
- png_ptr->pass--;
-
- if (png_ptr->pass >= 7)
- break;
-
- png_ptr->iwidth = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
-
- if (png_ptr->transformations & PNG_INTERLACE)
- break;
-
- png_ptr->num_rows = (png_ptr->height +
- png_pass_yinc[png_ptr->pass] - 1 -
- png_pass_ystart[png_ptr->pass]) /
- png_pass_yinc[png_ptr->pass];
-
- } while (png_ptr->iwidth == 0 || png_ptr->num_rows == 0);
- }
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-}
-
-void /* PRIVATE */
-png_push_have_info(png_structrp png_ptr, png_inforp info_ptr)
-{
- if (png_ptr->info_fn != NULL)
- (*(png_ptr->info_fn))(png_ptr, info_ptr);
-}
-
-void /* PRIVATE */
-png_push_have_end(png_structrp png_ptr, png_inforp info_ptr)
-{
- if (png_ptr->end_fn != NULL)
- (*(png_ptr->end_fn))(png_ptr, info_ptr);
-}
-
-void /* PRIVATE */
-png_push_have_row(png_structrp png_ptr, png_bytep row)
-{
- if (png_ptr->row_fn != NULL)
- (*(png_ptr->row_fn))(png_ptr, row, png_ptr->row_number,
- (int)png_ptr->pass);
-}
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
-void PNGAPI
-png_progressive_combine_row(png_const_structrp png_ptr, png_bytep old_row,
- png_const_bytep new_row)
-{
- if (png_ptr == NULL)
- return;
-
- /* new_row is a flag here - if it is NULL then the app callback was called
- * from an empty row (see the calls to png_struct::row_fn below), otherwise
- * it must be png_ptr->row_buf+1
- */
- if (new_row != NULL)
- png_combine_row(png_ptr, old_row, 1/*display*/);
-}
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-
-void PNGAPI
-png_set_progressive_read_fn(png_structrp png_ptr, png_voidp progressive_ptr,
- png_progressive_info_ptr info_fn, png_progressive_row_ptr row_fn,
- png_progressive_end_ptr end_fn)
-{
- if (png_ptr == NULL)
- return;
-
- png_ptr->info_fn = info_fn;
- png_ptr->row_fn = row_fn;
- png_ptr->end_fn = end_fn;
-
- png_set_read_fn(png_ptr, progressive_ptr, png_push_fill_buffer);
-}
-
-png_voidp PNGAPI
-png_get_progressive_ptr(png_const_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return (NULL);
-
- return png_ptr->io_ptr;
-}
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
+++ /dev/null
-
-/* pngpriv.h - private declarations for use inside libpng
- *
- * For conditions of distribution and use, see copyright notice in png.h
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.6.3 [July 18, 2013]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* The symbols declared in this file (including the functions declared
- * as extern) are PRIVATE. They are not part of the libpng public
- * interface, and are not recommended for use by regular applications.
- * Some of them may become public in the future; others may stay private,
- * change in an incompatible way, or even disappear.
- * Although the libpng users are not forbidden to include this header,
- * they should be well aware of the issues that may arise from doing so.
- */
-
-#ifndef PNGPRIV_H
-#define PNGPRIV_H
-
-/* Feature Test Macros. The following are defined here to ensure that correctly
- * implemented libraries reveal the APIs libpng needs to build and hide those
- * that are not needed and potentially damaging to the compilation.
- *
- * Feature Test Macros must be defined before any system header is included (see
- * POSIX 1003.1 2.8.2 "POSIX Symbols."
- *
- * These macros only have an effect if the operating system supports either
- * POSIX 1003.1 or C99, or both. On other operating systems (particularly
- * Windows/Visual Studio) there is no effect; the OS specific tests below are
- * still required (as of 2011-05-02.)
- */
-#define _POSIX_SOURCE 1 /* Just the POSIX 1003.1 and C89 APIs */
-
-#ifndef PNG_VERSION_INFO_ONLY
-/* Standard library headers not required by png.h: */
-# include <stdlib.h>
-# include <string.h>
-#endif
-
-#define PNGLIB_BUILD /*libpng is being built, not used*/
-
-/* If HAVE_CONFIG_H is defined during the build then the build system must
- * provide an appropriate "config.h" file on the include path. The header file
- * must provide definitions as required below (search for "HAVE_CONFIG_H");
- * see configure.ac for more details of the requirements. The macro
- * "PNG_NO_CONFIG_H" is provided for maintainers to test for dependencies on
- * 'configure'; define this macro to prevent the configure build including the
- * configure generated config.h. Libpng is expected to compile without *any*
- * special build system support on a reasonably ANSI-C compliant system.
- */
-#if defined(HAVE_CONFIG_H) && !defined(PNG_NO_CONFIG_H)
-# include <config.h>
-
- /* Pick up the definition of 'restrict' from config.h if it was read: */
-# define PNG_RESTRICT restrict
-#endif
-
-/* To support symbol prefixing it is necessary to know *before* including png.h
- * whether the fixed point (and maybe other) APIs are exported, because if they
- * are not internal definitions may be required. This is handled below just
- * before png.h is included, but load the configuration now if it is available.
- */
-#ifndef PNGLCONF_H
-# include "pnglibconf.h"
-#endif
-
-/* Local renames may change non-exported API functions from png.h */
-#if defined(PNG_PREFIX) && !defined(PNGPREFIX_H)
-# include "pngprefix.h"
-#endif
-
-#ifdef PNG_USER_CONFIG
-# include "pngusr.h"
- /* These should have been defined in pngusr.h */
-# ifndef PNG_USER_PRIVATEBUILD
-# define PNG_USER_PRIVATEBUILD "Custom libpng build"
-# endif
-# ifndef PNG_USER_DLLFNAME_POSTFIX
-# define PNG_USER_DLLFNAME_POSTFIX "Cb"
-# endif
-#endif
-
-/* Compile time options.
- * =====================
- * In a multi-arch build the compiler may compile the code several times for the
- * same object module, producing different binaries for different architectures.
- * When this happens configure-time setting of the target host options cannot be
- * done and this interferes with the handling of the ARM NEON optimizations, and
- * possibly other similar optimizations. Put additional tests here; in general
- * this is needed when the same option can be changed at both compile time and
- * run time depending on the target OS (i.e. iOS vs Android.)
- *
- * NOTE: symbol prefixing does not pass $(CFLAGS) to the preprocessor, because
- * this is not possible with certain compilers (Oracle SUN OS CC), as a result
- * it is necessary to ensure that all extern functions that *might* be used
- * regardless of $(CFLAGS) get declared in this file. The test on __ARM_NEON__
- * below is one example of this behavior because it is controlled by the
- * presence or not of -mfpu=neon on the GCC command line, it is possible to do
- * this in $(CC), e.g. "CC=gcc -mfpu=neon", but people who build libpng rarely
- * do this.
- */
-#ifndef PNG_ARM_NEON_OPT
- /* ARM NEON optimizations are being controlled by the compiler settings,
- * typically the target FPU. If the FPU has been set to NEON (-mfpu=neon
- * with GCC) then the compiler will define __ARM_NEON__ and we can rely
- * unconditionally on NEON instructions not crashing, otherwise we must
- * disable use of NEON instructions:
- */
-# ifdef __ARM_NEON__
-# define PNG_ARM_NEON_OPT 2
-# else
-# define PNG_ARM_NEON_OPT 0
-# endif
-#endif
-
-#if PNG_ARM_NEON_OPT > 0
- /* NEON optimizations are to be at least considered by libpng, so enable the
- * callbacks to do this.
- */
-# define PNG_FILTER_OPTIMIZATIONS png_init_filter_functions_neon
-#endif
-
-/* Is this a build of a DLL where compilation of the object modules requires
- * different preprocessor settings to those required for a simple library? If
- * so PNG_BUILD_DLL must be set.
- *
- * If libpng is used inside a DLL but that DLL does not export the libpng APIs
- * PNG_BUILD_DLL must not be set. To avoid the code below kicking in build a
- * static library of libpng then link the DLL against that.
- */
-#ifndef PNG_BUILD_DLL
-# ifdef DLL_EXPORT
- /* This is set by libtool when files are compiled for a DLL; libtool
- * always compiles twice, even on systems where it isn't necessary. Set
- * PNG_BUILD_DLL in case it is necessary:
- */
-# define PNG_BUILD_DLL
-# else
-# ifdef _WINDLL
- /* This is set by the Microsoft Visual Studio IDE in projects that
- * build a DLL. It can't easily be removed from those projects (it
- * isn't visible in the Visual Studio UI) so it is a fairly reliable
- * indication that PNG_IMPEXP needs to be set to the DLL export
- * attributes.
- */
-# define PNG_BUILD_DLL
-# else
-# ifdef __DLL__
- /* This is set by the Borland C system when compiling for a DLL
- * (as above.)
- */
-# define PNG_BUILD_DLL
-# else
- /* Add additional compiler cases here. */
-# endif
-# endif
-# endif
-#endif /* Setting PNG_BUILD_DLL if required */
-
-/* See pngconf.h for more details: the builder of the library may set this on
- * the command line to the right thing for the specific compilation system or it
- * may be automagically set above (at present we know of no system where it does
- * need to be set on the command line.)
- *
- * PNG_IMPEXP must be set here when building the library to prevent pngconf.h
- * setting it to the "import" setting for a DLL build.
- */
-#ifndef PNG_IMPEXP
-# ifdef PNG_BUILD_DLL
-# define PNG_IMPEXP PNG_DLL_EXPORT
-# else
- /* Not building a DLL, or the DLL doesn't require specific export
- * definitions.
- */
-# define PNG_IMPEXP
-# endif
-#endif
-
-/* No warnings for private or deprecated functions in the build: */
-#ifndef PNG_DEPRECATED
-# define PNG_DEPRECATED
-#endif
-#ifndef PNG_PRIVATE
-# define PNG_PRIVATE
-#endif
-
-/* Symbol preprocessing support.
- *
- * To enable listing global, but internal, symbols the following macros should
- * always be used to declare an extern data or function object in this file.
- */
-#ifndef PNG_INTERNAL_DATA
-# define PNG_INTERNAL_DATA(type, name, array) extern type name array
-#endif
-
-#ifndef PNG_INTERNAL_FUNCTION
-# define PNG_INTERNAL_FUNCTION(type, name, args, attributes)\
- extern PNG_FUNCTION(type, name, args, PNG_EMPTY attributes)
-#endif
-
-/* If floating or fixed point APIs are disabled they may still be compiled
- * internally. To handle this make sure they are declared as the appropriate
- * internal extern function (otherwise the symbol prefixing stuff won't work and
- * the functions will be used without definitions.)
- *
- * NOTE: although all the API functions are declared here they are not all
- * actually built! Because the declarations are still made it is necessary to
- * fake out types that they depend on.
- */
-#ifndef PNG_FP_EXPORT
-# ifndef PNG_FLOATING_POINT_SUPPORTED
-# define PNG_FP_EXPORT(ordinal, type, name, args)\
- PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);
-# ifndef PNG_VERSION_INFO_ONLY
- typedef struct png_incomplete png_double;
- typedef png_double* png_doublep;
- typedef const png_double* png_const_doublep;
- typedef png_double** png_doublepp;
-# endif
-# endif
-#endif
-#ifndef PNG_FIXED_EXPORT
-# ifndef PNG_FIXED_POINT_SUPPORTED
-# define PNG_FIXED_EXPORT(ordinal, type, name, args)\
- PNG_INTERNAL_FUNCTION(type, name, args, PNG_EMPTY);
-# endif
-#endif
-
-#include "png.h"
-
-/* pngconf.h does not set PNG_DLL_EXPORT unless it is required, so: */
-#ifndef PNG_DLL_EXPORT
-# define PNG_DLL_EXPORT
-#endif
-
-/* SECURITY and SAFETY:
- *
- * By default libpng is built without any internal limits on image size,
- * individual heap (png_malloc) allocations or the total amount of memory used.
- * If PNG_SAFE_LIMITS_SUPPORTED is defined, however, the limits below are used
- * (unless individually overridden). These limits are believed to be fairly
- * safe, but builders of secure systems should verify the values against the
- * real system capabilities.
- */
-#ifdef PNG_SAFE_LIMITS_SUPPORTED
- /* 'safe' limits */
-# ifndef PNG_USER_WIDTH_MAX
-# define PNG_USER_WIDTH_MAX 1000000
-# endif
-# ifndef PNG_USER_HEIGHT_MAX
-# define PNG_USER_HEIGHT_MAX 1000000
-# endif
-# ifndef PNG_USER_CHUNK_CACHE_MAX
-# define PNG_USER_CHUNK_CACHE_MAX 128
-# endif
-# ifndef PNG_USER_CHUNK_MALLOC_MAX
-# define PNG_USER_CHUNK_MALLOC_MAX 8000000
-# endif
-#else
- /* values for no limits */
-# ifndef PNG_USER_WIDTH_MAX
-# define PNG_USER_WIDTH_MAX 0x7fffffff
-# endif
-# ifndef PNG_USER_HEIGHT_MAX
-# define PNG_USER_HEIGHT_MAX 0x7fffffff
-# endif
-# ifndef PNG_USER_CHUNK_CACHE_MAX
-# define PNG_USER_CHUNK_CACHE_MAX 0
-# endif
-# ifndef PNG_USER_CHUNK_MALLOC_MAX
-# define PNG_USER_CHUNK_MALLOC_MAX 0
-# endif
-#endif
-
-/* Moved to pngpriv.h at libpng-1.5.0 */
-/* NOTE: some of these may have been used in external applications as
- * these definitions were exposed in pngconf.h prior to 1.5.
- */
-
-/* If you are running on a machine where you cannot allocate more
- * than 64K of memory at once, uncomment this. While libpng will not
- * normally need that much memory in a chunk (unless you load up a very
- * large file), zlib needs to know how big of a chunk it can use, and
- * libpng thus makes sure to check any memory allocation to verify it
- * will fit into memory.
- *
- * zlib provides 'MAXSEG_64K' which, if defined, indicates the
- * same limit and pngconf.h (already included) sets the limit
- * if certain operating systems are detected.
- */
-#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
-# define PNG_MAX_MALLOC_64K
-#endif
-
-#ifndef PNG_UNUSED
-/* Unused formal parameter warnings are silenced using the following macro
- * which is expected to have no bad effects on performance (optimizing
- * compilers will probably remove it entirely). Note that if you replace
- * it with something other than whitespace, you must include the terminating
- * semicolon.
- */
-# define PNG_UNUSED(param) (void)param;
-#endif
-
-/* Just a little check that someone hasn't tried to define something
- * contradictory.
- */
-#if (PNG_ZBUF_SIZE > 65536L) && defined(PNG_MAX_MALLOC_64K)
-# undef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 65536L
-#endif
-
-/* If warnings or errors are turned off the code is disabled or redirected here.
- * From 1.5.4 functions have been added to allow very limited formatting of
- * error and warning messages - this code will also be disabled here.
- */
-#ifdef PNG_WARNINGS_SUPPORTED
-# define PNG_WARNING_PARAMETERS(p) png_warning_parameters p;
-#else
-# define png_warning(s1,s2) ((void)(s1))
-# define png_chunk_warning(s1,s2) ((void)(s1))
-# define png_warning_parameter(p,number,string) ((void)0)
-# define png_warning_parameter_unsigned(p,number,format,value) ((void)0)
-# define png_warning_parameter_signed(p,number,format,value) ((void)0)
-# define png_formatted_warning(pp,p,message) ((void)(pp))
-# define PNG_WARNING_PARAMETERS(p)
-#endif
-#ifndef PNG_ERROR_TEXT_SUPPORTED
-# define png_error(s1,s2) png_err(s1)
-# define png_chunk_error(s1,s2) png_err(s1)
-# define png_fixed_error(s1,s2) png_err(s1)
-#endif
-
-/* C allows up-casts from (void*) to any pointer and (const void*) to any
- * pointer to a const object. C++ regards this as a type error and requires an
- * explicit, static, cast and provides the static_cast<> rune to ensure that
- * const is not cast away.
- */
-#ifdef __cplusplus
-# define png_voidcast(type, value) static_cast<type>(value)
-# define png_constcast(type, value) const_cast<type>(value)
-# define png_aligncast(type, value) \
- static_cast<type>(static_cast<void*>(value))
-# define png_aligncastconst(type, value) \
- static_cast<type>(static_cast<const void*>(value))
-#else
-# define png_voidcast(type, value) (value)
-# define png_constcast(type, value) ((type)(value))
-# define png_aligncast(type, value) ((void*)(value))
-# define png_aligncastconst(type, value) ((const void*)(value))
-#endif /* __cplusplus */
-
-/* Some fixed point APIs are still required even if not exported because
- * they get used by the corresponding floating point APIs. This magic
- * deals with this:
- */
-#ifdef PNG_FIXED_POINT_SUPPORTED
-# define PNGFAPI PNGAPI
-#else
-# define PNGFAPI /* PRIVATE */
-#endif
-
-#ifndef PNG_VERSION_INFO_ONLY
-/* Other defines specific to compilers can go here. Try to keep
- * them inside an appropriate ifdef/endif pair for portability.
- */
-#if defined(PNG_FLOATING_POINT_SUPPORTED) ||\
- defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
- /* png.c requires the following ANSI-C constants if the conversion of
- * floating point to ASCII is implemented therein:
- *
- * DBL_DIG Maximum number of decimal digits (can be set to any constant)
- * DBL_MIN Smallest normalized fp number (can be set to an arbitrary value)
- * DBL_MAX Maximum floating point number (can be set to an arbitrary value)
- */
-# include <float.h>
-
-# if (defined(__MWERKS__) && defined(macintosh)) || defined(applec) || \
- defined(THINK_C) || defined(__SC__) || defined(TARGET_OS_MAC)
- /* We need to check that <math.h> hasn't already been included earlier
- * as it seems it doesn't agree with <fp.h>, yet we should really use
- * <fp.h> if possible.
- */
-# if !defined(__MATH_H__) && !defined(__MATH_H) && !defined(__cmath__)
-# include <fp.h>
-# endif
-# else
-# include <math.h>
-# endif
-# if defined(_AMIGA) && defined(__SASC) && defined(_M68881)
- /* Amiga SAS/C: We must include builtin FPU functions when compiling using
- * MATH=68881
- */
-# include <m68881.h>
-# endif
-#endif
-
-/* This provides the non-ANSI (far) memory allocation routines. */
-#if defined(__TURBOC__) && defined(__MSDOS__)
-# include <mem.h>
-# include <alloc.h>
-#endif
-
-#if defined(WIN32) || defined(_Windows) || defined(_WINDOWS) || \
- defined(_WIN32) || defined(__WIN32__)
-# include <windows.h> /* defines _WINDOWS_ macro */
-#endif
-#endif /* PNG_VERSION_INFO_ONLY */
-
-/* Moved here around 1.5.0beta36 from pngconf.h */
-/* Users may want to use these so they are not private. Any library
- * functions that are passed far data must be model-independent.
- */
-
-/* Memory model/platform independent fns */
-#ifndef PNG_ABORT
-# ifdef _WINDOWS_
-# define PNG_ABORT() ExitProcess(0)
-# else
-# define PNG_ABORT() abort()
-# endif
-#endif
-
-/* These macros may need to be architecture dependent. */
-#define PNG_ALIGN_NONE 0 /* do not use data alignment */
-#define PNG_ALIGN_ALWAYS 1 /* assume unaligned accesses are OK */
-#ifdef offsetof
-# define PNG_ALIGN_OFFSET 2 /* use offsetof to determine alignment */
-#else
-# define PNG_ALIGN_OFFSET -1 /* prevent the use of this */
-#endif
-#define PNG_ALIGN_SIZE 3 /* use sizeof to determine alignment */
-
-#ifndef PNG_ALIGN_TYPE
- /* Default to using aligned access optimizations and requiring alignment to a
- * multiple of the data type size. Override in a compiler specific fashion
- * if necessary by inserting tests here:
- */
-# define PNG_ALIGN_TYPE PNG_ALIGN_SIZE
-#endif
-
-#if PNG_ALIGN_TYPE == PNG_ALIGN_SIZE
- /* This is used because in some compiler implementations non-aligned
- * structure members are supported, so the offsetof approach below fails.
- * Set PNG_ALIGN_SIZE=0 for compiler combinations where unaligned access
- * is good for performance. Do not do this unless you have tested the result
- * and understand it.
- */
-# define png_alignof(type) (sizeof (type))
-#else
-# if PNG_ALIGN_TYPE == PNG_ALIGN_OFFSET
-# define png_alignof(type) offsetof(struct{char c; type t;}, t)
-# else
-# if PNG_ALIGN_TYPE == PNG_ALIGN_ALWAYS
-# define png_alignof(type) (1)
-# endif
- /* Else leave png_alignof undefined to prevent use thereof */
-# endif
-#endif
-
-/* This implicitly assumes alignment is always to a power of 2. */
-#ifdef png_alignof
-# define png_isaligned(ptr, type)\
- ((((const char*)ptr-(const char*)0) & (png_alignof(type)-1)) == 0)
-#else
-# define png_isaligned(ptr, type) 0
-#endif
-
-/* End of memory model/platform independent support */
-/* End of 1.5.0beta36 move from pngconf.h */
-
-/* CONSTANTS and UTILITY MACROS
- * These are used internally by libpng and not exposed in the API
- */
-
-/* Various modes of operation. Note that after an init, mode is set to
- * zero automatically when the structure is created. Three of these
- * are defined in png.h because they need to be visible to applications
- * that call png_set_unknown_chunk().
- */
-/* #define PNG_HAVE_IHDR 0x01 (defined in png.h) */
-/* #define PNG_HAVE_PLTE 0x02 (defined in png.h) */
-#define PNG_HAVE_IDAT 0x04
-/* #define PNG_AFTER_IDAT 0x08 (defined in png.h) */
-#define PNG_HAVE_IEND 0x10
- /* 0x20 (unused) */
- /* 0x40 (unused) */
- /* 0x80 (unused) */
-#define PNG_HAVE_CHUNK_HEADER 0x100
-#define PNG_WROTE_tIME 0x200
-#define PNG_WROTE_INFO_BEFORE_PLTE 0x400
-#define PNG_BACKGROUND_IS_GRAY 0x800
-#define PNG_HAVE_PNG_SIGNATURE 0x1000
-#define PNG_HAVE_CHUNK_AFTER_IDAT 0x2000 /* Have another chunk after IDAT */
- /* 0x4000 (unused) */
-#define PNG_IS_READ_STRUCT 0x8000 /* Else is a write struct */
-
-/* Flags for the transformations the PNG library does on the image data */
-#define PNG_BGR 0x0001
-#define PNG_INTERLACE 0x0002
-#define PNG_PACK 0x0004
-#define PNG_SHIFT 0x0008
-#define PNG_SWAP_BYTES 0x0010
-#define PNG_INVERT_MONO 0x0020
-#define PNG_QUANTIZE 0x0040
-#define PNG_COMPOSE 0x0080 /* Was PNG_BACKGROUND */
-#define PNG_BACKGROUND_EXPAND 0x0100
-#define PNG_EXPAND_16 0x0200 /* Added to libpng 1.5.2 */
-#define PNG_16_TO_8 0x0400 /* Becomes 'chop' in 1.5.4 */
-#define PNG_RGBA 0x0800
-#define PNG_EXPAND 0x1000
-#define PNG_GAMMA 0x2000
-#define PNG_GRAY_TO_RGB 0x4000
-#define PNG_FILLER 0x8000
-#define PNG_PACKSWAP 0x10000
-#define PNG_SWAP_ALPHA 0x20000
-#define PNG_STRIP_ALPHA 0x40000
-#define PNG_INVERT_ALPHA 0x80000
-#define PNG_USER_TRANSFORM 0x100000
-#define PNG_RGB_TO_GRAY_ERR 0x200000
-#define PNG_RGB_TO_GRAY_WARN 0x400000
-#define PNG_RGB_TO_GRAY 0x600000 /* two bits, RGB_TO_GRAY_ERR|WARN */
-#define PNG_ENCODE_ALPHA 0x800000 /* Added to libpng-1.5.4 */
-#define PNG_ADD_ALPHA 0x1000000 /* Added to libpng-1.2.7 */
-#define PNG_EXPAND_tRNS 0x2000000 /* Added to libpng-1.2.9 */
-#define PNG_SCALE_16_TO_8 0x4000000 /* Added to libpng-1.5.4 */
- /* 0x8000000 unused */
- /* 0x10000000 unused */
- /* 0x20000000 unused */
- /* 0x40000000 unused */
-/* Flags for png_create_struct */
-#define PNG_STRUCT_PNG 0x0001
-#define PNG_STRUCT_INFO 0x0002
-
-/* Scaling factor for filter heuristic weighting calculations */
-#define PNG_WEIGHT_FACTOR (1<<(PNG_WEIGHT_SHIFT))
-#define PNG_COST_FACTOR (1<<(PNG_COST_SHIFT))
-
-/* Flags for the png_ptr->flags rather than declaring a byte for each one */
-#define PNG_FLAG_ZLIB_CUSTOM_STRATEGY 0x0001
-#define PNG_FLAG_ZSTREAM_INITIALIZED 0x0002 /* Added to libpng-1.6.0 */
- /* 0x0004 unused */
-#define PNG_FLAG_ZSTREAM_ENDED 0x0008 /* Added to libpng-1.6.0 */
- /* 0x0010 unused */
- /* 0x0020 unused */
-#define PNG_FLAG_ROW_INIT 0x0040
-#define PNG_FLAG_FILLER_AFTER 0x0080
-#define PNG_FLAG_CRC_ANCILLARY_USE 0x0100
-#define PNG_FLAG_CRC_ANCILLARY_NOWARN 0x0200
-#define PNG_FLAG_CRC_CRITICAL_USE 0x0400
-#define PNG_FLAG_CRC_CRITICAL_IGNORE 0x0800
-#define PNG_FLAG_ASSUME_sRGB 0x1000 /* Added to libpng-1.5.4 */
-#define PNG_FLAG_OPTIMIZE_ALPHA 0x2000 /* Added to libpng-1.5.4 */
-#define PNG_FLAG_DETECT_UNINITIALIZED 0x4000 /* Added to libpng-1.5.4 */
-/* #define PNG_FLAG_KEEP_UNKNOWN_CHUNKS 0x8000 */
-/* #define PNG_FLAG_KEEP_UNSAFE_CHUNKS 0x10000 */
-#define PNG_FLAG_LIBRARY_MISMATCH 0x20000
-#define PNG_FLAG_STRIP_ERROR_NUMBERS 0x40000
-#define PNG_FLAG_STRIP_ERROR_TEXT 0x80000
-#define PNG_FLAG_BENIGN_ERRORS_WARN 0x100000 /* Added to libpng-1.4.0 */
-#define PNG_FLAG_APP_WARNINGS_WARN 0x200000 /* Added to libpng-1.6.0 */
-#define PNG_FLAG_APP_ERRORS_WARN 0x400000 /* Added to libpng-1.6.0 */
- /* 0x800000 unused */
- /* 0x1000000 unused */
- /* 0x2000000 unused */
- /* 0x4000000 unused */
- /* 0x8000000 unused */
- /* 0x10000000 unused */
- /* 0x20000000 unused */
- /* 0x40000000 unused */
-
-#define PNG_FLAG_CRC_ANCILLARY_MASK (PNG_FLAG_CRC_ANCILLARY_USE | \
- PNG_FLAG_CRC_ANCILLARY_NOWARN)
-
-#define PNG_FLAG_CRC_CRITICAL_MASK (PNG_FLAG_CRC_CRITICAL_USE | \
- PNG_FLAG_CRC_CRITICAL_IGNORE)
-
-#define PNG_FLAG_CRC_MASK (PNG_FLAG_CRC_ANCILLARY_MASK | \
- PNG_FLAG_CRC_CRITICAL_MASK)
-
-/* Save typing and make code easier to understand */
-
-#define PNG_COLOR_DIST(c1, c2) (abs((int)((c1).red) - (int)((c2).red)) + \
- abs((int)((c1).green) - (int)((c2).green)) + \
- abs((int)((c1).blue) - (int)((c2).blue)))
-
-/* Added to libpng-1.6.0: scale a 16-bit value in the range 0..65535 to 0..255
- * by dividing by 257 *with rounding*. This macro is exact for the given range.
- * See the discourse in pngrtran.c png_do_scale_16_to_8. The values in the
- * macro were established by experiment (modifying the added value). The macro
- * has a second variant that takes a value already scaled by 255 and divides by
- * 65535 - this has a maximum error of .502. Over the range 0..65535*65535 it
- * only gives off-by-one errors and only for 0.5% (1 in 200) of the values.
- */
-#define PNG_DIV65535(v24) (((v24) + 32895) >> 16)
-#define PNG_DIV257(v16) PNG_DIV65535((png_uint_32)(v16) * 255)
-
-/* Added to libpng-1.2.6 JB */
-#define PNG_ROWBYTES(pixel_bits, width) \
- ((pixel_bits) >= 8 ? \
- ((png_size_t)(width) * (((png_size_t)(pixel_bits)) >> 3)) : \
- (( ((png_size_t)(width) * ((png_size_t)(pixel_bits))) + 7) >> 3) )
-
-/* PNG_OUT_OF_RANGE returns true if value is outside the range
- * ideal-delta..ideal+delta. Each argument is evaluated twice.
- * "ideal" and "delta" should be constants, normally simple
- * integers, "value" a variable. Added to libpng-1.2.6 JB
- */
-#define PNG_OUT_OF_RANGE(value, ideal, delta) \
- ( (value) < (ideal)-(delta) || (value) > (ideal)+(delta) )
-
-/* Conversions between fixed and floating point, only defined if
- * required (to make sure the code doesn't accidentally use float
- * when it is supposedly disabled.)
- */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-/* The floating point conversion can't overflow, though it can and
- * does lose accuracy relative to the original fixed point value.
- * In practice this doesn't matter because png_fixed_point only
- * stores numbers with very low precision. The png_ptr and s
- * arguments are unused by default but are there in case error
- * checking becomes a requirement.
- */
-#define png_float(png_ptr, fixed, s) (.00001 * (fixed))
-
-/* The fixed point conversion performs range checking and evaluates
- * its argument multiple times, so must be used with care. The
- * range checking uses the PNG specification values for a signed
- * 32 bit fixed point value except that the values are deliberately
- * rounded-to-zero to an integral value - 21474 (21474.83 is roughly
- * (2^31-1) * 100000). 's' is a string that describes the value being
- * converted.
- *
- * NOTE: this macro will raise a png_error if the range check fails,
- * therefore it is normally only appropriate to use this on values
- * that come from API calls or other sources where an out of range
- * error indicates a programming error, not a data error!
- *
- * NOTE: by default this is off - the macro is not used - because the
- * function call saves a lot of code.
- */
-#ifdef PNG_FIXED_POINT_MACRO_SUPPORTED
-#define png_fixed(png_ptr, fp, s) ((fp) <= 21474 && (fp) >= -21474 ?\
- ((png_fixed_point)(100000 * (fp))) : (png_fixed_error(png_ptr, s),0))
-#endif
-/* else the corresponding function is defined below, inside the scope of the
- * cplusplus test.
- */
-#endif
-
-/* Constants for known chunk types. If you need to add a chunk, define the name
- * here. For historical reasons these constants have the form png_<name>; i.e.
- * the prefix is lower case. Please use decimal values as the parameters to
- * match the ISO PNG specification and to avoid relying on the C locale
- * interpretation of character values.
- *
- * Prior to 1.5.6 these constants were strings, as of 1.5.6 png_uint_32 values
- * are computed and a new macro (PNG_STRING_FROM_CHUNK) added to allow a string
- * to be generated if required.
- *
- * PNG_32b correctly produces a value shifted by up to 24 bits, even on
- * architectures where (int) is only 16 bits.
- */
-#define PNG_32b(b,s) ((png_uint_32)(b) << (s))
-#define PNG_U32(b1,b2,b3,b4) \
- (PNG_32b(b1,24) | PNG_32b(b2,16) | PNG_32b(b3,8) | PNG_32b(b4,0))
-
-/* Constants for known chunk types.
- *
- * MAINTAINERS: If you need to add a chunk, define the name here.
- * For historical reasons these constants have the form png_<name>; i.e.
- * the prefix is lower case. Please use decimal values as the parameters to
- * match the ISO PNG specification and to avoid relying on the C locale
- * interpretation of character values. Please keep the list sorted.
- *
- * Notice that PNG_U32 is used to define a 32-bit value for the 4 byte chunk
- * type. In fact the specification does not express chunk types this way,
- * however using a 32-bit value means that the chunk type can be read from the
- * stream using exactly the same code as used for a 32-bit unsigned value and
- * can be examined far more efficiently (using one arithmetic compare).
- *
- * Prior to 1.5.6 the chunk type constants were expressed as C strings. The
- * libpng API still uses strings for 'unknown' chunks and a macro,
- * PNG_STRING_FROM_CHUNK, allows a string to be generated if required. Notice
- * that for portable code numeric values must still be used; the string "IHDR"
- * is not portable and neither is PNG_U32('I', 'H', 'D', 'R').
- *
- * In 1.7.0 the definitions will be made public in png.h to avoid having to
- * duplicate the same definitions in application code.
- */
-#define png_IDAT PNG_U32( 73, 68, 65, 84)
-#define png_IEND PNG_U32( 73, 69, 78, 68)
-#define png_IHDR PNG_U32( 73, 72, 68, 82)
-#define png_PLTE PNG_U32( 80, 76, 84, 69)
-#define png_bKGD PNG_U32( 98, 75, 71, 68)
-#define png_cHRM PNG_U32( 99, 72, 82, 77)
-#define png_fRAc PNG_U32(102, 82, 65, 99) /* registered, not defined */
-#define png_gAMA PNG_U32(103, 65, 77, 65)
-#define png_gIFg PNG_U32(103, 73, 70, 103)
-#define png_gIFt PNG_U32(103, 73, 70, 116) /* deprecated */
-#define png_gIFx PNG_U32(103, 73, 70, 120)
-#define png_hIST PNG_U32(104, 73, 83, 84)
-#define png_iCCP PNG_U32(105, 67, 67, 80)
-#define png_iTXt PNG_U32(105, 84, 88, 116)
-#define png_oFFs PNG_U32(111, 70, 70, 115)
-#define png_pCAL PNG_U32(112, 67, 65, 76)
-#define png_pHYs PNG_U32(112, 72, 89, 115)
-#define png_sBIT PNG_U32(115, 66, 73, 84)
-#define png_sCAL PNG_U32(115, 67, 65, 76)
-#define png_sPLT PNG_U32(115, 80, 76, 84)
-#define png_sRGB PNG_U32(115, 82, 71, 66)
-#define png_sTER PNG_U32(115, 84, 69, 82)
-#define png_tEXt PNG_U32(116, 69, 88, 116)
-#define png_tIME PNG_U32(116, 73, 77, 69)
-#define png_tRNS PNG_U32(116, 82, 78, 83)
-#define png_zTXt PNG_U32(122, 84, 88, 116)
-
-/* The following will work on (signed char*) strings, whereas the get_uint_32
- * macro will fail on top-bit-set values because of the sign extension.
- */
-#define PNG_CHUNK_FROM_STRING(s)\
- PNG_U32(0xff&(s)[0], 0xff&(s)[1], 0xff&(s)[2], 0xff&(s)[3])
-
-/* This uses (char), not (png_byte) to avoid warnings on systems where (char) is
- * signed and the argument is a (char[]) This macro will fail miserably on
- * systems where (char) is more than 8 bits.
- */
-#define PNG_STRING_FROM_CHUNK(s,c)\
- (void)(((char*)(s))[0]=(char)((c)>>24), ((char*)(s))[1]=(char)((c)>>16),\
- ((char*)(s))[2]=(char)((c)>>8), ((char*)(s))[3]=(char)((c)))
-
-/* Do the same but terminate with a null character. */
-#define PNG_CSTRING_FROM_CHUNK(s,c)\
- (void)(PNG_STRING_FROM_CHUNK(s,c), ((char*)(s))[4] = 0)
-
-/* Test on flag values as defined in the spec (section 5.4): */
-#define PNG_CHUNK_ANCILLARY(c) (1 & ((c) >> 29))
-#define PNG_CHUNK_CRITICAL(c) (!PNG_CHUNK_ANCILLARY(c))
-#define PNG_CHUNK_PRIVATE(c) (1 & ((c) >> 21))
-#define PNG_CHUNK_RESERVED(c) (1 & ((c) >> 13))
-#define PNG_CHUNK_SAFE_TO_COPY(c) (1 & ((c) >> 5))
-
-/* Gamma values (new at libpng-1.5.4): */
-#define PNG_GAMMA_MAC_OLD 151724 /* Assume '1.8' is really 2.2/1.45! */
-#define PNG_GAMMA_MAC_INVERSE 65909
-#define PNG_GAMMA_sRGB_INVERSE 45455
-
-/* Almost everything below is C specific; the #defines above can be used in
- * non-C code (so long as it is C-preprocessed) the rest of this stuff cannot.
- */
-#ifndef PNG_VERSION_INFO_ONLY
-
-#include "pngstruct.h"
-#include "pnginfo.h"
-
-/* Validate the include paths - the include path used to generate pnglibconf.h
- * must match that used in the build, or we must be using pnglibconf.h.prebuilt:
- */
-#if PNG_ZLIB_VERNUM != 0 && PNG_ZLIB_VERNUM != ZLIB_VERNUM
-# error ZLIB_VERNUM != PNG_ZLIB_VERNUM \
- "-I (include path) error: see the notes in pngpriv.h"
- /* This means that when pnglibconf.h was built the copy of zlib.h that it
- * used is not the same as the one being used here. Because the build of
- * libpng makes decisions to use inflateInit2 and inflateReset2 based on the
- * zlib version number and because this affects handling of certain broken
- * PNG files the -I directives must match.
- *
- * The most likely explanation is that you passed a -I in CFLAGS, this will
- * not work; all the preprocessor directories and in particular all the -I
- * directives must be in CPPFLAGS.
- */
-#endif
-
-/* This is used for 16 bit gamma tables -- only the top level pointers are
- * const; this could be changed:
- */
-typedef const png_uint_16p * png_const_uint_16pp;
-
-/* Added to libpng-1.5.7: sRGB conversion tables */
-#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
- defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
-#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
-PNG_INTERNAL_DATA(const png_uint_16, png_sRGB_table, [256]);
- /* Convert from an sRGB encoded value 0..255 to a 16-bit linear value,
- * 0..65535. This table gives the closest 16-bit answers (no errors).
- */
-#endif
-
-PNG_INTERNAL_DATA(const png_uint_16, png_sRGB_base, [512]);
-PNG_INTERNAL_DATA(const png_byte, png_sRGB_delta, [512]);
-
-#define PNG_sRGB_FROM_LINEAR(linear) ((png_byte)((png_sRGB_base[(linear)>>15] +\
- ((((linear)&0x7fff)*png_sRGB_delta[(linear)>>15])>>12)) >> 8))
- /* Given a value 'linear' in the range 0..255*65535 calculate the 8-bit sRGB
- * encoded value with maximum error 0.646365. Note that the input is not a
- * 16-bit value; it has been multiplied by 255! */
-#endif /* PNG_SIMPLIFIED_READ/WRITE */
-
-
-/* Inhibit C++ name-mangling for libpng functions but not for system calls. */
-#ifdef __cplusplus
-extern "C" {
-#endif /* __cplusplus */
-
-/* Internal functions; these are not exported from a DLL however because they
- * are used within several of the C source files they have to be C extern.
- *
- * All of these functions must be declared with PNG_INTERNAL_FUNCTION.
- */
-
-/* Zlib support */
-#define PNG_UNEXPECTED_ZLIB_RETURN (-7)
-PNG_INTERNAL_FUNCTION(void, png_zstream_error,(png_structrp png_ptr, int ret),
- PNG_EMPTY);
- /* Used by the zlib handling functions to ensure that z_stream::msg is always
- * set before they return.
- */
-
-#ifdef PNG_WRITE_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_free_buffer_list,(png_structrp png_ptr,
- png_compression_bufferp *list),PNG_EMPTY);
- /* Free the buffer list used by the compressed write code. */
-#endif
-
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
- !defined(PNG_FIXED_POINT_MACRO_SUPPORTED) && \
- (defined(PNG_gAMA_SUPPORTED) || defined(PNG_cHRM_SUPPORTED) || \
- defined(PNG_sCAL_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)) || \
- (defined(PNG_sCAL_SUPPORTED) && \
- defined(PNG_FLOATING_ARITHMETIC_SUPPORTED))
-PNG_INTERNAL_FUNCTION(png_fixed_point,png_fixed,(png_const_structrp png_ptr,
- double fp, png_const_charp text),PNG_EMPTY);
-#endif
-
-/* Check the user version string for compatibility, returns false if the version
- * numbers aren't compatible.
- */
-PNG_INTERNAL_FUNCTION(int,png_user_version_check,(png_structrp png_ptr,
- png_const_charp user_png_ver),PNG_EMPTY);
-
-/* Internal base allocator - no messages, NULL on failure to allocate. This
- * does, however, call the application provided allocator and that could call
- * png_error (although that would be a bug in the application implementation.)
- */
-PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_base,(png_const_structrp png_ptr,
- png_alloc_size_t size),PNG_ALLOCATED);
-
-#if defined(PNG_TEXT_SUPPORTED) || defined(PNG_sPLT_SUPPORTED) ||\
- defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED)
-/* Internal array allocator, outputs no error or warning messages on failure,
- * just returns NULL.
- */
-PNG_INTERNAL_FUNCTION(png_voidp,png_malloc_array,(png_const_structrp png_ptr,
- int nelements, size_t element_size),PNG_ALLOCATED);
-
-/* The same but an existing array is extended by add_elements. This function
- * also memsets the new elements to 0 and copies the old elements. The old
- * array is not freed or altered.
- */
-PNG_INTERNAL_FUNCTION(png_voidp,png_realloc_array,(png_const_structrp png_ptr,
- png_const_voidp array, int old_elements, int add_elements,
- size_t element_size),PNG_ALLOCATED);
-#endif /* text, sPLT or unknown chunks */
-
-/* Magic to create a struct when there is no struct to call the user supplied
- * memory allocators. Because error handling has not been set up the memory
- * handlers can't safely call png_error, but this is an obscure and undocumented
- * restriction so libpng has to assume that the 'free' handler, at least, might
- * call png_error.
- */
-PNG_INTERNAL_FUNCTION(png_structp,png_create_png_struct,
- (png_const_charp user_png_ver, png_voidp error_ptr, png_error_ptr error_fn,
- png_error_ptr warn_fn, png_voidp mem_ptr, png_malloc_ptr malloc_fn,
- png_free_ptr free_fn),PNG_ALLOCATED);
-
-/* Free memory from internal libpng struct */
-PNG_INTERNAL_FUNCTION(void,png_destroy_png_struct,(png_structrp png_ptr),
- PNG_EMPTY);
-
-/* Free an allocated jmp_buf (always succeeds) */
-PNG_INTERNAL_FUNCTION(void,png_free_jmpbuf,(png_structrp png_ptr),PNG_EMPTY);
-
-/* Function to allocate memory for zlib. PNGAPI is disallowed. */
-PNG_INTERNAL_FUNCTION(voidpf,png_zalloc,(voidpf png_ptr, uInt items, uInt size),
- PNG_ALLOCATED);
-
-/* Function to free memory for zlib. PNGAPI is disallowed. */
-PNG_INTERNAL_FUNCTION(void,png_zfree,(voidpf png_ptr, voidpf ptr),PNG_EMPTY);
-
-/* Next four functions are used internally as callbacks. PNGCBAPI is required
- * but not PNG_EXPORT. PNGAPI added at libpng version 1.2.3, changed to
- * PNGCBAPI at 1.5.0
- */
-
-PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_read_data,(png_structp png_ptr,
- png_bytep data, png_size_t length),PNG_EMPTY);
-
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_push_fill_buffer,(png_structp png_ptr,
- png_bytep buffer, png_size_t length),PNG_EMPTY);
-#endif
-
-PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_write_data,(png_structp png_ptr,
- png_bytep data, png_size_t length),PNG_EMPTY);
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-# ifdef PNG_STDIO_SUPPORTED
-PNG_INTERNAL_FUNCTION(void PNGCBAPI,png_default_flush,(png_structp png_ptr),
- PNG_EMPTY);
-# endif
-#endif
-
-/* Reset the CRC variable */
-PNG_INTERNAL_FUNCTION(void,png_reset_crc,(png_structrp png_ptr),PNG_EMPTY);
-
-/* Write the "data" buffer to whatever output you are using */
-PNG_INTERNAL_FUNCTION(void,png_write_data,(png_structrp png_ptr,
- png_const_bytep data, png_size_t length),PNG_EMPTY);
-
-/* Read and check the PNG file signature */
-PNG_INTERNAL_FUNCTION(void,png_read_sig,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-
-/* Read the chunk header (length + type name) */
-PNG_INTERNAL_FUNCTION(png_uint_32,png_read_chunk_header,(png_structrp png_ptr),
- PNG_EMPTY);
-
-/* Read data from whatever input you are using into the "data" buffer */
-PNG_INTERNAL_FUNCTION(void,png_read_data,(png_structrp png_ptr, png_bytep data,
- png_size_t length),PNG_EMPTY);
-
-/* Read bytes into buf, and update png_ptr->crc */
-PNG_INTERNAL_FUNCTION(void,png_crc_read,(png_structrp png_ptr, png_bytep buf,
- png_uint_32 length),PNG_EMPTY);
-
-/* Read "skip" bytes, read the file crc, and (optionally) verify png_ptr->crc */
-PNG_INTERNAL_FUNCTION(int,png_crc_finish,(png_structrp png_ptr,
- png_uint_32 skip),PNG_EMPTY);
-
-/* Read the CRC from the file and compare it to the libpng calculated CRC */
-PNG_INTERNAL_FUNCTION(int,png_crc_error,(png_structrp png_ptr),PNG_EMPTY);
-
-/* Calculate the CRC over a section of data. Note that we are only
- * passing a maximum of 64K on systems that have this as a memory limit,
- * since this is the maximum buffer size we can specify.
- */
-PNG_INTERNAL_FUNCTION(void,png_calculate_crc,(png_structrp png_ptr,
- png_const_bytep ptr, png_size_t length),PNG_EMPTY);
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_flush,(png_structrp png_ptr),PNG_EMPTY);
-#endif
-
-/* Write various chunks */
-
-/* Write the IHDR chunk, and update the png_struct with the necessary
- * information.
- */
-PNG_INTERNAL_FUNCTION(void,png_write_IHDR,(png_structrp png_ptr,
- png_uint_32 width, png_uint_32 height, int bit_depth, int color_type,
- int compression_method, int filter_method, int interlace_method),PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_write_PLTE,(png_structrp png_ptr,
- png_const_colorp palette, png_uint_32 num_pal),PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_compress_IDAT,(png_structrp png_ptr,
- png_const_bytep row_data, png_alloc_size_t row_data_length, int flush),
- PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_write_IEND,(png_structrp png_ptr),PNG_EMPTY);
-
-#ifdef PNG_WRITE_gAMA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_gAMA_fixed,(png_structrp png_ptr,
- png_fixed_point file_gamma),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_sBIT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_sBIT,(png_structrp png_ptr,
- png_const_color_8p sbit, int color_type),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_cHRM_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_cHRM_fixed,(png_structrp png_ptr,
- const png_xy *xy), PNG_EMPTY);
- /* The xy value must have been previously validated */
-#endif
-
-#ifdef PNG_WRITE_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_sRGB,(png_structrp png_ptr,
- int intent),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_iCCP_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_iCCP,(png_structrp png_ptr,
- png_const_charp name, png_const_bytep profile), PNG_EMPTY);
- /* The profile must have been previously validated for correctness, the
- * length comes from the first four bytes. Only the base, deflate,
- * compression is supported.
- */
-#endif
-
-#ifdef PNG_WRITE_sPLT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_sPLT,(png_structrp png_ptr,
- png_const_sPLT_tp palette),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_tRNS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_tRNS,(png_structrp png_ptr,
- png_const_bytep trans, png_const_color_16p values, int number,
- int color_type),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_bKGD_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_bKGD,(png_structrp png_ptr,
- png_const_color_16p values, int color_type),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_hIST_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_hIST,(png_structrp png_ptr,
- png_const_uint_16p hist, int num_hist),PNG_EMPTY);
-#endif
-
-/* Chunks that have keywords */
-#ifdef PNG_WRITE_tEXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_tEXt,(png_structrp png_ptr,
- png_const_charp key, png_const_charp text, png_size_t text_len),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_zTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_zTXt,(png_structrp png_ptr, png_const_charp
- key, png_const_charp text, png_size_t text_len, int compression),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_iTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_iTXt,(png_structrp png_ptr,
- int compression, png_const_charp key, png_const_charp lang,
- png_const_charp lang_key, png_const_charp text),PNG_EMPTY);
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED /* Added at version 1.0.14 and 1.2.4 */
-PNG_INTERNAL_FUNCTION(int,png_set_text_2,(png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_textp text_ptr, int num_text),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_oFFs_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_oFFs,(png_structrp png_ptr,
- png_int_32 x_offset, png_int_32 y_offset, int unit_type),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_pCAL_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_pCAL,(png_structrp png_ptr,
- png_charp purpose, png_int_32 X0, png_int_32 X1, int type, int nparams,
- png_const_charp units, png_charpp params),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_pHYs_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_pHYs,(png_structrp png_ptr,
- png_uint_32 x_pixels_per_unit, png_uint_32 y_pixels_per_unit,
- int unit_type),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_tIME_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_tIME,(png_structrp png_ptr,
- png_const_timep mod_time),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_sCAL_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_write_sCAL_s,(png_structrp png_ptr,
- int unit, png_const_charp width, png_const_charp height),PNG_EMPTY);
-#endif
-
-/* Called when finished processing a row of data */
-PNG_INTERNAL_FUNCTION(void,png_write_finish_row,(png_structrp png_ptr),
- PNG_EMPTY);
-
-/* Internal use only. Called before first row of data */
-PNG_INTERNAL_FUNCTION(void,png_write_start_row,(png_structrp png_ptr),
- PNG_EMPTY);
-
-/* Combine a row of data, dealing with alpha, etc. if requested. 'row' is an
- * array of png_ptr->width pixels. If the image is not interlaced or this
- * is the final pass this just does a memcpy, otherwise the "display" flag
- * is used to determine whether to copy pixels that are not in the current pass.
- *
- * Because 'png_do_read_interlace' (below) replicates pixels this allows this
- * function to achieve the documented 'blocky' appearance during interlaced read
- * if display is 1 and the 'sparkle' appearance, where existing pixels in 'row'
- * are not changed if they are not in the current pass, when display is 0.
- *
- * 'display' must be 0 or 1, otherwise the memcpy will be done regardless.
- *
- * The API always reads from the png_struct row buffer and always assumes that
- * it is full width (png_do_read_interlace has already been called.)
- *
- * This function is only ever used to write to row buffers provided by the
- * caller of the relevant libpng API and the row must have already been
- * transformed by the read transformations.
- *
- * The PNG_USE_COMPILE_TIME_MASKS option causes generation of pre-computed
- * bitmasks for use within the code, otherwise runtime generated masks are used.
- * The default is compile time masks.
- */
-#ifndef PNG_USE_COMPILE_TIME_MASKS
-# define PNG_USE_COMPILE_TIME_MASKS 1
-#endif
-PNG_INTERNAL_FUNCTION(void,png_combine_row,(png_const_structrp png_ptr,
- png_bytep row, int display),PNG_EMPTY);
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
-/* Expand an interlaced row: the 'row_info' describes the pass data that has
- * been read in and must correspond to the pixels in 'row', the pixels are
- * expanded (moved apart) in 'row' to match the final layout, when doing this
- * the pixels are *replicated* to the intervening space. This is essential for
- * the correct operation of png_combine_row, above.
- */
-PNG_INTERNAL_FUNCTION(void,png_do_read_interlace,(png_row_infop row_info,
- png_bytep row, int pass, png_uint_32 transformations),PNG_EMPTY);
-#endif
-
-/* GRR TO DO (2.0 or whenever): simplify other internal calling interfaces */
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
-/* Grab pixels out of a row for an interlaced pass */
-PNG_INTERNAL_FUNCTION(void,png_do_write_interlace,(png_row_infop row_info,
- png_bytep row, int pass),PNG_EMPTY);
-#endif
-
-/* Unfilter a row: check the filter value before calling this, there is no point
- * calling it for PNG_FILTER_VALUE_NONE.
- */
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row,(png_structrp pp, png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row, int filter),PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_up_neon,(png_row_infop row_info,
- png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub3_neon,(png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_sub4_neon,(png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg3_neon,(png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_avg4_neon,(png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth3_neon,(png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_filter_row_paeth4_neon,(png_row_infop
- row_info, png_bytep row, png_const_bytep prev_row),PNG_EMPTY);
-
-/* Choose the best filter to use and filter the row data */
-PNG_INTERNAL_FUNCTION(void,png_write_find_filter,(png_structrp png_ptr,
- png_row_infop row_info),PNG_EMPTY);
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_read_IDAT_data,(png_structrp png_ptr,
- png_bytep output, png_alloc_size_t avail_out),PNG_EMPTY);
- /* Read 'avail_out' bytes of data from the IDAT stream. If the output buffer
- * is NULL the function checks, instead, for the end of the stream. In this
- * case a benign error will be issued if the stream end is not found or if
- * extra data has to be consumed.
- */
-PNG_INTERNAL_FUNCTION(void,png_read_finish_IDAT,(png_structrp png_ptr),
- PNG_EMPTY);
- /* This cleans up when the IDAT LZ stream does not end when the last image
- * byte is read; there is still some pending input.
- */
-
-PNG_INTERNAL_FUNCTION(void,png_read_finish_row,(png_structrp png_ptr),
- PNG_EMPTY);
- /* Finish a row while reading, dealing with interlacing passes, etc. */
-#endif
-
-/* Initialize the row buffers, etc. */
-PNG_INTERNAL_FUNCTION(void,png_read_start_row,(png_structrp png_ptr),PNG_EMPTY);
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-/* Optional call to update the users info structure */
-PNG_INTERNAL_FUNCTION(void,png_read_transform_info,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-#endif
-
-/* These are the functions that do the transformations */
-#ifdef PNG_READ_FILLER_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_read_filler,(png_row_infop row_info,
- png_bytep row, png_uint_32 filler, png_uint_32 flags),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_read_swap_alpha,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_write_swap_alpha,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_read_invert_alpha,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_write_invert_alpha,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
- defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_strip_channel,(png_row_infop row_info,
- png_bytep row, int at_start),PNG_EMPTY);
-#endif
-
-#ifdef PNG_16BIT_SUPPORTED
-#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_swap,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-#endif
-
-#if defined(PNG_READ_PACKSWAP_SUPPORTED) || \
- defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_packswap,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-PNG_INTERNAL_FUNCTION(int,png_do_rgb_to_gray,(png_structrp png_ptr,
- png_row_infop row_info, png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_gray_to_rgb,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_PACK_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_unpack,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_SHIFT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_unshift,(png_row_infop row_info,
- png_bytep row, png_const_color_8p sig_bits),PNG_EMPTY);
-#endif
-
-#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_invert,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_scale_16_to_8,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_chop,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_quantize,(png_row_infop row_info,
- png_bytep row, png_const_bytep palette_lookup,
- png_const_bytep quantize_lookup),PNG_EMPTY);
-
-# ifdef PNG_CORRECT_PALETTE_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_correct_palette,(png_structrp png_ptr,
- png_colorp palette, int num_palette),PNG_EMPTY);
-# endif
-#endif
-
-#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_bgr,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_PACK_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_pack,(png_row_infop row_info,
- png_bytep row, png_uint_32 bit_depth),PNG_EMPTY);
-#endif
-
-#ifdef PNG_WRITE_SHIFT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_shift,(png_row_infop row_info,
- png_bytep row, png_const_color_8p bit_depth),PNG_EMPTY);
-#endif
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
- defined(PNG_READ_ALPHA_MODE_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_compose,(png_row_infop row_info,
- png_bytep row, png_structrp png_ptr),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_gamma,(png_row_infop row_info,
- png_bytep row, png_structrp png_ptr),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_encode_alpha,(png_row_infop row_info,
- png_bytep row, png_structrp png_ptr),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_expand_palette,(png_row_infop row_info,
- png_bytep row, png_const_colorp palette, png_const_bytep trans,
- int num_trans),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_do_expand,(png_row_infop row_info,
- png_bytep row, png_const_color_16p trans_color),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_expand_16,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-/* The following decodes the appropriate chunks, and does error correction,
- * then calls the appropriate callback for the chunk if it is valid.
- */
-
-/* Decode the IHDR chunk */
-PNG_INTERNAL_FUNCTION(void,png_handle_IHDR,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_handle_PLTE,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_handle_IEND,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-
-#ifdef PNG_READ_bKGD_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_bKGD,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_cHRM,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_gAMA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_gAMA,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_hIST,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_iCCP_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_iCCP,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif /* PNG_READ_iCCP_SUPPORTED */
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_iTXt,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_oFFs,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_pCAL,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_pHYs,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sBIT,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sCAL,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_sPLT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sPLT,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif /* PNG_READ_sPLT_SUPPORTED */
-
-#ifdef PNG_READ_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_sRGB,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_tEXt,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_tIME,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_tRNS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_tRNS,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_zTXt,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-#endif
-
-PNG_INTERNAL_FUNCTION(void,png_check_chunk_name,(png_structrp png_ptr,
- png_uint_32 chunk_name),PNG_EMPTY);
-
-#ifdef PNG_READ_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_handle_unknown,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length, int keep),PNG_EMPTY);
- /* This is the function that gets called for unknown chunks. The 'keep'
- * argument is either non-zero for a known chunk that has been set to be
- * handled as unknown or zero for an unknown chunk. By default the function
- * just skips the chunk or errors out if it is critical.
- */
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
-PNG_INTERNAL_FUNCTION(int,png_chunk_unknown_handling,
- (png_const_structrp png_ptr, png_uint_32 chunk_name),PNG_EMPTY);
- /* Exactly as the API png_handle_as_unknown() except that the argument is a
- * 32-bit chunk name, not a string.
- */
-#endif
-#endif /* PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
-#endif /* PNG_READ_SUPPORTED */
-
-/* Handle the transformations for reading and writing */
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_read_transformations,(png_structrp png_ptr,
- png_row_infop row_info),PNG_EMPTY);
-#endif
-#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_write_transformations,(png_structrp png_ptr,
- png_row_infop row_info),PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_init_read_transformations,(png_structrp png_ptr),
- PNG_EMPTY);
-#endif
-
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_read_chunk,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_sig,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_check_crc,(png_structrp png_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_crc_skip,(png_structrp png_ptr,
- png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_crc_finish,(png_structrp png_ptr),
- PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_save_buffer,(png_structrp png_ptr),
- PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_restore_buffer,(png_structrp png_ptr,
- png_bytep buffer, png_size_t buffer_length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_IDAT,(png_structrp png_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_process_IDAT_data,(png_structrp png_ptr,
- png_bytep buffer, png_size_t buffer_length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_process_row,(png_structrp png_ptr),
- PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_handle_unknown,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_have_info,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_have_end,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_have_row,(png_structrp png_ptr,
- png_bytep row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_end,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_process_some_data,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_read_push_finish_row,(png_structrp png_ptr),
- PNG_EMPTY);
-# ifdef PNG_READ_tEXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_handle_tEXt,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_tEXt,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-# endif
-# ifdef PNG_READ_zTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_handle_zTXt,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_zTXt,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-# endif
-# ifdef PNG_READ_iTXt_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_push_handle_iTXt,(png_structrp png_ptr,
- png_inforp info_ptr, png_uint_32 length),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_push_read_iTXt,(png_structrp png_ptr,
- png_inforp info_ptr),PNG_EMPTY);
-# endif
-
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_do_read_intrapixel,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_do_write_intrapixel,(png_row_infop row_info,
- png_bytep row),PNG_EMPTY);
-#endif
-
-/* Added at libpng version 1.6.0 */
-#ifdef PNG_GAMMA_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_colorspace_set_gamma,(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_fixed_point gAMA), PNG_EMPTY);
- /* Set the colorspace gamma with a value provided by the application or by
- * the gAMA chunk on read. The value will override anything set by an ICC
- * profile.
- */
-
-PNG_INTERNAL_FUNCTION(void,png_colorspace_sync_info,(png_const_structrp png_ptr,
- png_inforp info_ptr), PNG_EMPTY);
- /* Synchronize the info 'valid' flags with the colorspace */
-
-PNG_INTERNAL_FUNCTION(void,png_colorspace_sync,(png_const_structrp png_ptr,
- png_inforp info_ptr), PNG_EMPTY);
- /* Copy the png_struct colorspace to the info_struct and call the above to
- * synchronize the flags. Checks for NULL info_ptr and does nothing.
- */
-#endif
-
-/* Added at libpng version 1.4.0 */
-#ifdef PNG_COLORSPACE_SUPPORTED
-/* These internal functions are for maintaining the colorspace structure within
- * a png_info or png_struct (or, indeed, both).
- */
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_chromaticities,
- (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_xy *xy,
- int preferred), PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_endpoints,
- (png_const_structrp png_ptr, png_colorspacerp colorspace, const png_XYZ *XYZ,
- int preferred), PNG_EMPTY);
-
-#ifdef PNG_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_sRGB,(png_const_structrp png_ptr,
- png_colorspacerp colorspace, int intent), PNG_EMPTY);
- /* This does set the colorspace gAMA and cHRM values too, but doesn't set the
- * flags to write them, if it returns false there was a problem and an error
- * message has already been output (but the colorspace may still need to be
- * synced to record the invalid flag).
- */
-#endif /* sRGB */
-
-#ifdef PNG_iCCP_SUPPORTED
-PNG_INTERNAL_FUNCTION(int,png_colorspace_set_ICC,(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_const_charp name,
- png_uint_32 profile_length, png_const_bytep profile, int color_type),
- PNG_EMPTY);
- /* The 'name' is used for information only */
-
-/* Routines for checking parts of an ICC profile. */
-PNG_INTERNAL_FUNCTION(int,png_icc_check_length,(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_const_charp name,
- png_uint_32 profile_length), PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(int,png_icc_check_header,(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_const_charp name,
- png_uint_32 profile_length,
- png_const_bytep profile /* first 132 bytes only */, int color_type),
- PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(int,png_icc_check_tag_table,(png_const_structrp png_ptr,
- png_colorspacerp colorspace, png_const_charp name,
- png_uint_32 profile_length,
- png_const_bytep profile /* header plus whole tag table */), PNG_EMPTY);
-#ifdef PNG_sRGB_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_icc_set_sRGB,(
- png_const_structrp png_ptr, png_colorspacerp colorspace,
- png_const_bytep profile, uLong adler), PNG_EMPTY);
- /* 'adler' is the Adler32 checksum of the uncompressed profile data. It may
- * be zero to indicate that it is not available. It is used, if provided,
- * as a fast check on the profile when checking to see if it is sRGB.
- */
-#endif
-#endif /* iCCP */
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_colorspace_set_rgb_coefficients,
- (png_structrp png_ptr), PNG_EMPTY);
- /* Set the rgb_to_gray coefficients from the colorspace Y values */
-#endif /* READ_RGB_TO_GRAY */
-#endif /* COLORSPACE */
-
-/* Added at libpng version 1.4.0 */
-PNG_INTERNAL_FUNCTION(void,png_check_IHDR,(png_const_structrp png_ptr,
- png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_type, int compression_type,
- int filter_type),PNG_EMPTY);
-
-/* Added at libpng version 1.5.10 */
-#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
- defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_do_check_palette_indexes,
- (png_structrp png_ptr, png_row_infop row_info),PNG_EMPTY);
-#endif
-
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && defined(PNG_ERROR_TEXT_SUPPORTED)
-PNG_INTERNAL_FUNCTION(void,png_fixed_error,(png_const_structrp png_ptr,
- png_const_charp name),PNG_NORETURN);
-#endif
-
-/* Puts 'string' into 'buffer' at buffer[pos], taking care never to overwrite
- * the end. Always leaves the buffer nul terminated. Never errors out (and
- * there is no error code.)
- */
-PNG_INTERNAL_FUNCTION(size_t,png_safecat,(png_charp buffer, size_t bufsize,
- size_t pos, png_const_charp string),PNG_EMPTY);
-
-/* Various internal functions to handle formatted warning messages, currently
- * only implemented for warnings.
- */
-#if defined(PNG_WARNINGS_SUPPORTED) || defined(PNG_TIME_RFC1123_SUPPORTED)
-/* Utility to dump an unsigned value into a buffer, given a start pointer and
- * and end pointer (which should point just *beyond* the end of the buffer!)
- * Returns the pointer to the start of the formatted string. This utility only
- * does unsigned values.
- */
-PNG_INTERNAL_FUNCTION(png_charp,png_format_number,(png_const_charp start,
- png_charp end, int format, png_alloc_size_t number),PNG_EMPTY);
-
-/* Convenience macro that takes an array: */
-#define PNG_FORMAT_NUMBER(buffer,format,number) \
- png_format_number(buffer, buffer + (sizeof buffer), format, number)
-
-/* Suggested size for a number buffer (enough for 64 bits and a sign!) */
-#define PNG_NUMBER_BUFFER_SIZE 24
-
-/* These are the integer formats currently supported, the name is formed from
- * the standard printf(3) format string.
- */
-#define PNG_NUMBER_FORMAT_u 1 /* chose unsigned API! */
-#define PNG_NUMBER_FORMAT_02u 2
-#define PNG_NUMBER_FORMAT_d 1 /* chose signed API! */
-#define PNG_NUMBER_FORMAT_02d 2
-#define PNG_NUMBER_FORMAT_x 3
-#define PNG_NUMBER_FORMAT_02x 4
-#define PNG_NUMBER_FORMAT_fixed 5 /* choose the signed API */
-#endif
-
-#ifdef PNG_WARNINGS_SUPPORTED
-/* New defines and members adding in libpng-1.5.4 */
-# define PNG_WARNING_PARAMETER_SIZE 32
-# define PNG_WARNING_PARAMETER_COUNT 8 /* Maximum 9; see pngerror.c */
-
-/* An l-value of this type has to be passed to the APIs below to cache the
- * values of the parameters to a formatted warning message.
- */
-typedef char png_warning_parameters[PNG_WARNING_PARAMETER_COUNT][
- PNG_WARNING_PARAMETER_SIZE];
-
-PNG_INTERNAL_FUNCTION(void,png_warning_parameter,(png_warning_parameters p,
- int number, png_const_charp string),PNG_EMPTY);
- /* Parameters are limited in size to PNG_WARNING_PARAMETER_SIZE characters,
- * including the trailing '\0'.
- */
-PNG_INTERNAL_FUNCTION(void,png_warning_parameter_unsigned,
- (png_warning_parameters p, int number, int format, png_alloc_size_t value),
- PNG_EMPTY);
- /* Use png_alloc_size_t because it is an unsigned type as big as any we
- * need to output. Use the following for a signed value.
- */
-PNG_INTERNAL_FUNCTION(void,png_warning_parameter_signed,
- (png_warning_parameters p, int number, int format, png_int_32 value),
- PNG_EMPTY);
-
-PNG_INTERNAL_FUNCTION(void,png_formatted_warning,(png_const_structrp png_ptr,
- png_warning_parameters p, png_const_charp message),PNG_EMPTY);
- /* 'message' follows the X/Open approach of using @1, @2 to insert
- * parameters previously supplied using the above functions. Errors in
- * specifying the parameters will simply result in garbage substitutions.
- */
-#endif
-
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-/* Application errors (new in 1.6); use these functions (declared below) for
- * errors in the parameters or order of API function calls on read. The
- * 'warning' should be used for an error that can be handled completely; the
- * 'error' for one which can be handled safely but which may lose application
- * information or settings.
- *
- * By default these both result in a png_error call prior to release, while in a
- * released version the 'warning' is just a warning. However if the application
- * explicitly disables benign errors (explicitly permitting the code to lose
- * information) they both turn into warnings.
- *
- * If benign errors aren't supported they end up as the corresponding base call
- * (png_warning or png_error.)
- */
-PNG_INTERNAL_FUNCTION(void,png_app_warning,(png_const_structrp png_ptr,
- png_const_charp message),PNG_EMPTY);
- /* The application provided invalid parameters to an API function or called
- * an API function at the wrong time, libpng can completely recover.
- */
-
-PNG_INTERNAL_FUNCTION(void,png_app_error,(png_const_structrp png_ptr,
- png_const_charp message),PNG_EMPTY);
- /* As above but libpng will ignore the call, or attempt some other partial
- * recovery from the error.
- */
-#else
-# define png_app_warning(pp,s) png_warning(pp,s)
-# define png_app_error(pp,s) png_error(pp,s)
-#endif
-
-PNG_INTERNAL_FUNCTION(void,png_chunk_report,(png_const_structrp png_ptr,
- png_const_charp message, int error),PNG_EMPTY);
- /* Report a recoverable issue in chunk data. On read this is used to report
- * a problem found while reading a particular chunk and the
- * png_chunk_benign_error or png_chunk_warning function is used as
- * appropriate. On write this is used to report an error that comes from
- * data set via an application call to a png_set_ API and png_app_error or
- * png_app_warning is used as appropriate.
- *
- * The 'error' parameter must have one of the following values:
- */
-#define PNG_CHUNK_WARNING 0 /* never an error */
-#define PNG_CHUNK_WRITE_ERROR 1 /* an error only on write */
-#define PNG_CHUNK_ERROR 2 /* always an error */
-
-/* ASCII to FP interfaces, currently only implemented if sCAL
- * support is required.
- */
-#if defined(PNG_sCAL_SUPPORTED)
-/* MAX_DIGITS is actually the maximum number of characters in an sCAL
- * width or height, derived from the precision (number of significant
- * digits - a build time settable option) and assumptions about the
- * maximum ridiculous exponent.
- */
-#define PNG_sCAL_MAX_DIGITS (PNG_sCAL_PRECISION+1/*.*/+1/*E*/+10/*exponent*/)
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_ascii_from_fp,(png_const_structrp png_ptr,
- png_charp ascii, png_size_t size, double fp, unsigned int precision),
- PNG_EMPTY);
-#endif /* FLOATING_POINT */
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_ascii_from_fixed,(png_const_structrp png_ptr,
- png_charp ascii, png_size_t size, png_fixed_point fp),PNG_EMPTY);
-#endif /* FIXED_POINT */
-#endif /* sCAL */
-
-#if defined(PNG_sCAL_SUPPORTED) || defined(PNG_pCAL_SUPPORTED)
-/* An internal API to validate the format of a floating point number.
- * The result is the index of the next character. If the number is
- * not valid it will be the index of a character in the supposed number.
- *
- * The format of a number is defined in the PNG extensions specification
- * and this API is strictly conformant to that spec, not anyone elses!
- *
- * The format as a regular expression is:
- *
- * [+-]?[0-9]+.?([Ee][+-]?[0-9]+)?
- *
- * or:
- *
- * [+-]?.[0-9]+(.[0-9]+)?([Ee][+-]?[0-9]+)?
- *
- * The complexity is that either integer or fraction must be present and the
- * fraction is permitted to have no digits only if the integer is present.
- *
- * NOTE: The dangling E problem.
- * There is a PNG valid floating point number in the following:
- *
- * PNG floating point numbers are not greedy.
- *
- * Working this out requires *TWO* character lookahead (because of the
- * sign), the parser does not do this - it will fail at the 'r' - this
- * doesn't matter for PNG sCAL chunk values, but it requires more care
- * if the value were ever to be embedded in something more complex. Use
- * ANSI-C strtod if you need the lookahead.
- */
-/* State table for the parser. */
-#define PNG_FP_INTEGER 0 /* before or in integer */
-#define PNG_FP_FRACTION 1 /* before or in fraction */
-#define PNG_FP_EXPONENT 2 /* before or in exponent */
-#define PNG_FP_STATE 3 /* mask for the above */
-#define PNG_FP_SAW_SIGN 4 /* Saw +/- in current state */
-#define PNG_FP_SAW_DIGIT 8 /* Saw a digit in current state */
-#define PNG_FP_SAW_DOT 16 /* Saw a dot in current state */
-#define PNG_FP_SAW_E 32 /* Saw an E (or e) in current state */
-#define PNG_FP_SAW_ANY 60 /* Saw any of the above 4 */
-
-/* These three values don't affect the parser. They are set but not used.
- */
-#define PNG_FP_WAS_VALID 64 /* Preceding substring is a valid fp number */
-#define PNG_FP_NEGATIVE 128 /* A negative number, including "-0" */
-#define PNG_FP_NONZERO 256 /* A non-zero value */
-#define PNG_FP_STICKY 448 /* The above three flags */
-
-/* This is available for the caller to store in 'state' if required. Do not
- * call the parser after setting it (the parser sometimes clears it.)
- */
-#define PNG_FP_INVALID 512 /* Available for callers as a distinct value */
-
-/* Result codes for the parser (boolean - true meants ok, false means
- * not ok yet.)
- */
-#define PNG_FP_MAYBE 0 /* The number may be valid in the future */
-#define PNG_FP_OK 1 /* The number is valid */
-
-/* Tests on the sticky non-zero and negative flags. To pass these checks
- * the state must also indicate that the whole number is valid - this is
- * achieved by testing PNG_FP_SAW_DIGIT (see the implementation for why this
- * is equivalent to PNG_FP_OK above.)
- */
-#define PNG_FP_NZ_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NEGATIVE | PNG_FP_NONZERO)
- /* NZ_MASK: the string is valid and a non-zero negative value */
-#define PNG_FP_Z_MASK (PNG_FP_SAW_DIGIT | PNG_FP_NONZERO)
- /* Z MASK: the string is valid and a non-zero value. */
- /* PNG_FP_SAW_DIGIT: the string is valid. */
-#define PNG_FP_IS_ZERO(state) (((state) & PNG_FP_Z_MASK) == PNG_FP_SAW_DIGIT)
-#define PNG_FP_IS_POSITIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_Z_MASK)
-#define PNG_FP_IS_NEGATIVE(state) (((state) & PNG_FP_NZ_MASK) == PNG_FP_NZ_MASK)
-
-/* The actual parser. This can be called repeatedly. It updates
- * the index into the string and the state variable (which must
- * be initialized to 0). It returns a result code, as above. There
- * is no point calling the parser any more if it fails to advance to
- * the end of the string - it is stuck on an invalid character (or
- * terminated by '\0').
- *
- * Note that the pointer will consume an E or even an E+ and then leave
- * a 'maybe' state even though a preceding integer.fraction is valid.
- * The PNG_FP_WAS_VALID flag indicates that a preceding substring was
- * a valid number. It's possible to recover from this by calling
- * the parser again (from the start, with state 0) but with a string
- * that omits the last character (i.e. set the size to the index of
- * the problem character.) This has not been tested within libpng.
- */
-PNG_INTERNAL_FUNCTION(int,png_check_fp_number,(png_const_charp string,
- png_size_t size, int *statep, png_size_tp whereami),PNG_EMPTY);
-
-/* This is the same but it checks a complete string and returns true
- * only if it just contains a floating point number. As of 1.5.4 this
- * function also returns the state at the end of parsing the number if
- * it was valid (otherwise it returns 0.) This can be used for testing
- * for negative or zero values using the sticky flag.
- */
-PNG_INTERNAL_FUNCTION(int,png_check_fp_string,(png_const_charp string,
- png_size_t size),PNG_EMPTY);
-#endif /* pCAL || sCAL */
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) ||\
- defined(PNG_INCH_CONVERSIONS_SUPPORTED) || defined(PNG_READ_pHYs_SUPPORTED)
-/* Added at libpng version 1.5.0 */
-/* This is a utility to provide a*times/div (rounded) and indicate
- * if there is an overflow. The result is a boolean - false (0)
- * for overflow, true (1) if no overflow, in which case *res
- * holds the result.
- */
-PNG_INTERNAL_FUNCTION(int,png_muldiv,(png_fixed_point_p res, png_fixed_point a,
- png_int_32 multiplied_by, png_int_32 divided_by),PNG_EMPTY);
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_INCH_CONVERSIONS_SUPPORTED)
-/* Same deal, but issue a warning on overflow and return 0. */
-PNG_INTERNAL_FUNCTION(png_fixed_point,png_muldiv_warn,
- (png_const_structrp png_ptr, png_fixed_point a, png_int_32 multiplied_by,
- png_int_32 divided_by),PNG_EMPTY);
-#endif
-
-#ifdef PNG_GAMMA_SUPPORTED
-/* Calculate a reciprocal - used for gamma values. This returns
- * 0 if the argument is 0 in order to maintain an undefined value;
- * there are no warnings.
- */
-PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal,(png_fixed_point a),
- PNG_EMPTY);
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-/* The same but gives a reciprocal of the product of two fixed point
- * values. Accuracy is suitable for gamma calculations but this is
- * not exact - use png_muldiv for that. Only required at present on read.
- */
-PNG_INTERNAL_FUNCTION(png_fixed_point,png_reciprocal2,(png_fixed_point a,
- png_fixed_point b),PNG_EMPTY);
-#endif
-
-/* Return true if the gamma value is significantly different from 1.0 */
-PNG_INTERNAL_FUNCTION(int,png_gamma_significant,(png_fixed_point gamma_value),
- PNG_EMPTY);
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-/* Internal fixed point gamma correction. These APIs are called as
- * required to convert single values - they don't need to be fast,
- * they are not used when processing image pixel values.
- *
- * While the input is an 'unsigned' value it must actually be the
- * correct bit value - 0..255 or 0..65535 as required.
- */
-PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_correct,(png_structrp png_ptr,
- unsigned int value, png_fixed_point gamma_value),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(png_uint_16,png_gamma_16bit_correct,(unsigned int value,
- png_fixed_point gamma_value),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(png_byte,png_gamma_8bit_correct,(unsigned int value,
- png_fixed_point gamma_value),PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_destroy_gamma_table,(png_structrp png_ptr),
- PNG_EMPTY);
-PNG_INTERNAL_FUNCTION(void,png_build_gamma_table,(png_structrp png_ptr,
- int bit_depth),PNG_EMPTY);
-#endif
-
-/* SIMPLIFIED READ/WRITE SUPPORT */
-#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) ||\
- defined(PNG_SIMPLIFIED_WRITE_SUPPORTED)
-/* The internal structure that png_image::opaque points to. */
-typedef struct png_control
-{
- png_structp png_ptr;
- png_infop info_ptr;
- png_voidp error_buf; /* Always a jmp_buf at present. */
-
- png_const_bytep memory; /* Memory buffer. */
- png_size_t size; /* Size of the memory buffer. */
-
- unsigned int for_write :1; /* Otherwise it is a read structure */
- unsigned int owned_file :1; /* We own the file in io_ptr */
-} png_control;
-
-/* Return the pointer to the jmp_buf from a png_control: necessary because C
- * does not reveal the type of the elements of jmp_buf.
- */
-#ifdef __cplusplus
-# define png_control_jmp_buf(pc) (((jmp_buf*)((pc)->error_buf))[0])
-#else
-# define png_control_jmp_buf(pc) ((pc)->error_buf)
-#endif
-
-/* Utility to safely execute a piece of libpng code catching and logging any
- * errors that might occur. Returns true on success, false on failure (either
- * of the function or as a result of a png_error.)
- */
-PNG_INTERNAL_FUNCTION(void,png_safe_error,(png_structp png_ptr,
- png_const_charp error_message),PNG_NORETURN);
-
-#ifdef PNG_WARNINGS_SUPPORTED
-PNG_INTERNAL_FUNCTION(void,png_safe_warning,(png_structp png_ptr,
- png_const_charp warning_message),PNG_EMPTY);
-#else
-# define png_safe_warning 0/*dummy argument*/
-#endif
-
-PNG_INTERNAL_FUNCTION(int,png_safe_execute,(png_imagep image,
- int (*function)(png_voidp), png_voidp arg),PNG_EMPTY);
-
-/* Utility to log an error; this also cleans up the png_image; the function
- * always returns 0 (false).
- */
-PNG_INTERNAL_FUNCTION(int,png_image_error,(png_imagep image,
- png_const_charp error_message),PNG_EMPTY);
-
-#ifndef PNG_SIMPLIFIED_READ_SUPPORTED
-/* png_image_free is used by the write code but not exported */
-PNG_INTERNAL_FUNCTION(void, png_image_free, (png_imagep image), PNG_EMPTY);
-#endif /* !SIMPLIFIED_READ */
-
-#endif /* SIMPLIFIED READ/WRITE */
-
-/* These are initialization functions for hardware specific PNG filter
- * optimizations; list these here then select the appropriate one at compile
- * time using the macro PNG_FILTER_OPTIMIZATIONS. If the macro is not defined
- * the generic code is used.
- */
-#ifdef PNG_FILTER_OPTIMIZATIONS
-PNG_INTERNAL_FUNCTION(void, PNG_FILTER_OPTIMIZATIONS, (png_structp png_ptr,
- unsigned int bpp), PNG_EMPTY);
- /* Just declare the optimization that will be used */
-#else
- /* List *all* the possible optimizations here - this branch is required if
- * the builder of libpng passes the definition of PNG_FILTER_OPTIMIZATIONS in
- * CFLAGS in place of CPPFLAGS *and* uses symbol prefixing.
- */
-PNG_INTERNAL_FUNCTION(void, png_init_filter_functions_neon,
- (png_structp png_ptr, unsigned int bpp), PNG_EMPTY);
-#endif
-
-/* Maintainer: Put new private prototypes here ^ */
-
-#include "pngdebug.h"
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* PNG_VERSION_INFO_ONLY */
-#endif /* PNGPRIV_H */
+++ /dev/null
-
-/* pngread.c - read a PNG file
- *
- * Last changed in libpng 1.6.1 [March 28, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file contains routines that an application calls directly to
- * read a PNG file or stream.
- */
-
-#include "pngpriv.h"
-#if defined(PNG_SIMPLIFIED_READ_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
-# include <errno.h>
-#endif
-
-#ifdef PNG_READ_SUPPORTED
-
-/* Create a PNG structure for reading, and allocate any memory needed. */
-PNG_FUNCTION(png_structp,PNGAPI
-png_create_read_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED)
-{
-#ifndef PNG_USER_MEM_SUPPORTED
- png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
- error_fn, warn_fn, NULL, NULL, NULL);
-#else
- return png_create_read_struct_2(user_png_ver, error_ptr, error_fn,
- warn_fn, NULL, NULL, NULL);
-}
-
-/* Alternate create PNG structure for reading, and allocate any memory
- * needed.
- */
-PNG_FUNCTION(png_structp,PNGAPI
-png_create_read_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
-{
- png_structp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
- error_fn, warn_fn, mem_ptr, malloc_fn, free_fn);
-#endif /* PNG_USER_MEM_SUPPORTED */
-
- if (png_ptr != NULL)
- {
- png_ptr->mode = PNG_IS_READ_STRUCT;
-
- /* Added in libpng-1.6.0; this can be used to detect a read structure if
- * required (it will be zero in a write structure.)
- */
-# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
- png_ptr->IDAT_read_size = PNG_IDAT_READ_SIZE;
-# endif
-
-# ifdef PNG_BENIGN_READ_ERRORS_SUPPORTED
- png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
-
- /* In stable builds only warn if an application error can be completely
- * handled.
- */
-# if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
- png_ptr->flags |= PNG_FLAG_APP_WARNINGS_WARN;
-# endif
-# endif
-
- /* TODO: delay this, it can be done in png_init_io (if the app doesn't
- * do it itself) avoiding setting the default function if it is not
- * required.
- */
- png_set_read_fn(png_ptr, NULL, NULL);
- }
-
- return png_ptr;
-}
-
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read the information before the actual image data. This has been
- * changed in v0.90 to allow reading a file that already has the magic
- * bytes read from the stream. You can tell libpng how many bytes have
- * been read from the beginning of the stream (up to the maximum of 8)
- * via png_set_sig_bytes(), and we will only check the remaining bytes
- * here. The application can then have access to the signature bytes we
- * read if it is determined that this isn't a valid PNG file.
- */
-void PNGAPI
-png_read_info(png_structrp png_ptr, png_inforp info_ptr)
-{
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- int keep;
-#endif
-
- png_debug(1, "in png_read_info");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- /* Read and check the PNG file signature. */
- png_read_sig(png_ptr, info_ptr);
-
- for (;;)
- {
- png_uint_32 length = png_read_chunk_header(png_ptr);
- png_uint_32 chunk_name = png_ptr->chunk_name;
-
- /* IDAT logic needs to happen here to simplify getting the two flags
- * right.
- */
- if (chunk_name == png_IDAT)
- {
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "Missing IHDR before IDAT");
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE))
- png_chunk_error(png_ptr, "Missing PLTE before IDAT");
-
- else if (png_ptr->mode & PNG_AFTER_IDAT)
- png_chunk_benign_error(png_ptr, "Too many IDATs found");
-
- png_ptr->mode |= PNG_HAVE_IDAT;
- }
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- png_ptr->mode |= PNG_AFTER_IDAT;
-
- /* This should be a binary subdivision search or a hash for
- * matching the chunk name rather than a linear search.
- */
- if (chunk_name == png_IHDR)
- png_handle_IHDR(png_ptr, info_ptr, length);
-
- else if (chunk_name == png_IEND)
- png_handle_IEND(png_ptr, info_ptr, length);
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
- {
- png_handle_unknown(png_ptr, info_ptr, length, keep);
-
- if (chunk_name == png_PLTE)
- png_ptr->mode |= PNG_HAVE_PLTE;
-
- else if (chunk_name == png_IDAT)
- {
- png_ptr->idat_size = 0; /* It has been consumed */
- break;
- }
- }
-#endif
- else if (chunk_name == png_PLTE)
- png_handle_PLTE(png_ptr, info_ptr, length);
-
- else if (chunk_name == png_IDAT)
- {
- png_ptr->idat_size = length;
- break;
- }
-
-#ifdef PNG_READ_bKGD_SUPPORTED
- else if (chunk_name == png_bKGD)
- png_handle_bKGD(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
- else if (chunk_name == png_cHRM)
- png_handle_cHRM(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_gAMA_SUPPORTED
- else if (chunk_name == png_gAMA)
- png_handle_gAMA(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
- else if (chunk_name == png_hIST)
- png_handle_hIST(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
- else if (chunk_name == png_oFFs)
- png_handle_oFFs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
- else if (chunk_name == png_pCAL)
- png_handle_pCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
- else if (chunk_name == png_sCAL)
- png_handle_sCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
- else if (chunk_name == png_pHYs)
- png_handle_pHYs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
- else if (chunk_name == png_sBIT)
- png_handle_sBIT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sRGB_SUPPORTED
- else if (chunk_name == png_sRGB)
- png_handle_sRGB(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iCCP_SUPPORTED
- else if (chunk_name == png_iCCP)
- png_handle_iCCP(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sPLT_SUPPORTED
- else if (chunk_name == png_sPLT)
- png_handle_sPLT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
- else if (chunk_name == png_tEXt)
- png_handle_tEXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
- else if (chunk_name == png_tIME)
- png_handle_tIME(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tRNS_SUPPORTED
- else if (chunk_name == png_tRNS)
- png_handle_tRNS(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
- else if (chunk_name == png_zTXt)
- png_handle_zTXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
- else if (chunk_name == png_iTXt)
- png_handle_iTXt(png_ptr, info_ptr, length);
-#endif
-
- else
- png_handle_unknown(png_ptr, info_ptr, length,
- PNG_HANDLE_CHUNK_AS_DEFAULT);
- }
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-/* Optional call to update the users info_ptr structure */
-void PNGAPI
-png_read_update_info(png_structrp png_ptr, png_inforp info_ptr)
-{
- png_debug(1, "in png_read_update_info");
-
- if (png_ptr != NULL)
- {
- if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0)
- {
- png_read_start_row(png_ptr);
-
-# ifdef PNG_READ_TRANSFORMS_SUPPORTED
- png_read_transform_info(png_ptr, info_ptr);
-# else
- PNG_UNUSED(info_ptr)
-# endif
- }
-
- /* New in 1.6.0 this avoids the bug of doing the initializations twice */
- else
- png_app_error(png_ptr,
- "png_read_update_info/png_start_read_image: duplicate call");
- }
-}
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Initialize palette, background, etc, after transformations
- * are set, but before any reading takes place. This allows
- * the user to obtain a gamma-corrected palette, for example.
- * If the user doesn't call this, we will do it ourselves.
- */
-void PNGAPI
-png_start_read_image(png_structrp png_ptr)
-{
- png_debug(1, "in png_start_read_image");
-
- if (png_ptr != NULL)
- {
- if ((png_ptr->flags & PNG_FLAG_ROW_INIT) == 0)
- png_read_start_row(png_ptr);
-
- /* New in 1.6.0 this avoids the bug of doing the initializations twice */
- else
- png_app_error(png_ptr,
- "png_start_read_image/png_read_update_info: duplicate call");
- }
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-void PNGAPI
-png_read_row(png_structrp png_ptr, png_bytep row, png_bytep dsp_row)
-{
- png_row_info row_info;
-
- if (png_ptr == NULL)
- return;
-
- png_debug2(1, "in png_read_row (row %lu, pass %d)",
- (unsigned long)png_ptr->row_number, png_ptr->pass);
-
- /* png_read_start_row sets the information (in particular iwidth) for this
- * interlace pass.
- */
- if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
- png_read_start_row(png_ptr);
-
- /* 1.5.6: row_info moved out of png_struct to a local here. */
- row_info.width = png_ptr->iwidth; /* NOTE: width of current interlaced row */
- row_info.color_type = png_ptr->color_type;
- row_info.bit_depth = png_ptr->bit_depth;
- row_info.channels = png_ptr->channels;
- row_info.pixel_depth = png_ptr->pixel_depth;
- row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
-
- if (png_ptr->row_number == 0 && png_ptr->pass == 0)
- {
- /* Check for transforms that have been set but were defined out */
-#if defined(PNG_WRITE_INVERT_SUPPORTED) && !defined(PNG_READ_INVERT_SUPPORTED)
- if (png_ptr->transformations & PNG_INVERT_MONO)
- png_warning(png_ptr, "PNG_READ_INVERT_SUPPORTED is not defined");
-#endif
-
-#if defined(PNG_WRITE_FILLER_SUPPORTED) && !defined(PNG_READ_FILLER_SUPPORTED)
- if (png_ptr->transformations & PNG_FILLER)
- png_warning(png_ptr, "PNG_READ_FILLER_SUPPORTED is not defined");
-#endif
-
-#if defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
- !defined(PNG_READ_PACKSWAP_SUPPORTED)
- if (png_ptr->transformations & PNG_PACKSWAP)
- png_warning(png_ptr, "PNG_READ_PACKSWAP_SUPPORTED is not defined");
-#endif
-
-#if defined(PNG_WRITE_PACK_SUPPORTED) && !defined(PNG_READ_PACK_SUPPORTED)
- if (png_ptr->transformations & PNG_PACK)
- png_warning(png_ptr, "PNG_READ_PACK_SUPPORTED is not defined");
-#endif
-
-#if defined(PNG_WRITE_SHIFT_SUPPORTED) && !defined(PNG_READ_SHIFT_SUPPORTED)
- if (png_ptr->transformations & PNG_SHIFT)
- png_warning(png_ptr, "PNG_READ_SHIFT_SUPPORTED is not defined");
-#endif
-
-#if defined(PNG_WRITE_BGR_SUPPORTED) && !defined(PNG_READ_BGR_SUPPORTED)
- if (png_ptr->transformations & PNG_BGR)
- png_warning(png_ptr, "PNG_READ_BGR_SUPPORTED is not defined");
-#endif
-
-#if defined(PNG_WRITE_SWAP_SUPPORTED) && !defined(PNG_READ_SWAP_SUPPORTED)
- if (png_ptr->transformations & PNG_SWAP_BYTES)
- png_warning(png_ptr, "PNG_READ_SWAP_SUPPORTED is not defined");
-#endif
- }
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* If interlaced and we do not need a new row, combine row and return.
- * Notice that the pixels we have from previous rows have been transformed
- * already; we can only combine like with like (transformed or
- * untransformed) and, because of the libpng API for interlaced images, this
- * means we must transform before de-interlacing.
- */
- if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
- {
- switch (png_ptr->pass)
- {
- case 0:
- if (png_ptr->row_number & 0x07)
- {
- if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
- png_read_finish_row(png_ptr);
- return;
- }
- break;
-
- case 1:
- if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
- {
- if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
-
- png_read_finish_row(png_ptr);
- return;
- }
- break;
-
- case 2:
- if ((png_ptr->row_number & 0x07) != 4)
- {
- if (dsp_row != NULL && (png_ptr->row_number & 4))
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
-
- png_read_finish_row(png_ptr);
- return;
- }
- break;
-
- case 3:
- if ((png_ptr->row_number & 3) || png_ptr->width < 3)
- {
- if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
-
- png_read_finish_row(png_ptr);
- return;
- }
- break;
-
- case 4:
- if ((png_ptr->row_number & 3) != 2)
- {
- if (dsp_row != NULL && (png_ptr->row_number & 2))
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
-
- png_read_finish_row(png_ptr);
- return;
- }
- break;
-
- case 5:
- if ((png_ptr->row_number & 1) || png_ptr->width < 2)
- {
- if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
-
- png_read_finish_row(png_ptr);
- return;
- }
- break;
-
- default:
- case 6:
- if (!(png_ptr->row_number & 1))
- {
- png_read_finish_row(png_ptr);
- return;
- }
- break;
- }
- }
-#endif
-
- if (!(png_ptr->mode & PNG_HAVE_IDAT))
- png_error(png_ptr, "Invalid attempt to read row data");
-
- /* Fill the row with IDAT data: */
- png_read_IDAT_data(png_ptr, png_ptr->row_buf, row_info.rowbytes + 1);
-
- if (png_ptr->row_buf[0] > PNG_FILTER_VALUE_NONE)
- {
- if (png_ptr->row_buf[0] < PNG_FILTER_VALUE_LAST)
- png_read_filter_row(png_ptr, &row_info, png_ptr->row_buf + 1,
- png_ptr->prev_row + 1, png_ptr->row_buf[0]);
- else
- png_error(png_ptr, "bad adaptive filter value");
- }
-
- /* libpng 1.5.6: the following line was copying png_ptr->rowbytes before
- * 1.5.6, while the buffer really is this big in current versions of libpng
- * it may not be in the future, so this was changed just to copy the
- * interlaced count:
- */
- memcpy(png_ptr->prev_row, png_ptr->row_buf, row_info.rowbytes + 1);
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
- {
- /* Intrapixel differencing */
- png_do_read_intrapixel(&row_info, png_ptr->row_buf + 1);
- }
-#endif
-
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
- if (png_ptr->transformations)
- png_do_read_transformations(png_ptr, &row_info);
-#endif
-
- /* The transformed pixel depth should match the depth now in row_info. */
- if (png_ptr->transformed_pixel_depth == 0)
- {
- png_ptr->transformed_pixel_depth = row_info.pixel_depth;
- if (row_info.pixel_depth > png_ptr->maximum_pixel_depth)
- png_error(png_ptr, "sequential row overflow");
- }
-
- else if (png_ptr->transformed_pixel_depth != row_info.pixel_depth)
- png_error(png_ptr, "internal sequential row size calculation error");
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* Blow up interlaced rows to full size */
- if (png_ptr->interlaced &&
- (png_ptr->transformations & PNG_INTERLACE))
- {
- if (png_ptr->pass < 6)
- png_do_read_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass,
- png_ptr->transformations);
-
- if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, 1/*display*/);
-
- if (row != NULL)
- png_combine_row(png_ptr, row, 0/*row*/);
- }
-
- else
-#endif
- {
- if (row != NULL)
- png_combine_row(png_ptr, row, -1/*ignored*/);
-
- if (dsp_row != NULL)
- png_combine_row(png_ptr, dsp_row, -1/*ignored*/);
- }
- png_read_finish_row(png_ptr);
-
- if (png_ptr->read_row_fn != NULL)
- (*(png_ptr->read_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
-
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read one or more rows of image data. If the image is interlaced,
- * and png_set_interlace_handling() has been called, the rows need to
- * contain the contents of the rows from the previous pass. If the
- * image has alpha or transparency, and png_handle_alpha()[*] has been
- * called, the rows contents must be initialized to the contents of the
- * screen.
- *
- * "row" holds the actual image, and pixels are placed in it
- * as they arrive. If the image is displayed after each pass, it will
- * appear to "sparkle" in. "display_row" can be used to display a
- * "chunky" progressive image, with finer detail added as it becomes
- * available. If you do not want this "chunky" display, you may pass
- * NULL for display_row. If you do not want the sparkle display, and
- * you have not called png_handle_alpha(), you may pass NULL for rows.
- * If you have called png_handle_alpha(), and the image has either an
- * alpha channel or a transparency chunk, you must provide a buffer for
- * rows. In this case, you do not have to provide a display_row buffer
- * also, but you may. If the image is not interlaced, or if you have
- * not called png_set_interlace_handling(), the display_row buffer will
- * be ignored, so pass NULL to it.
- *
- * [*] png_handle_alpha() does not exist yet, as of this version of libpng
- */
-
-void PNGAPI
-png_read_rows(png_structrp png_ptr, png_bytepp row,
- png_bytepp display_row, png_uint_32 num_rows)
-{
- png_uint_32 i;
- png_bytepp rp;
- png_bytepp dp;
-
- png_debug(1, "in png_read_rows");
-
- if (png_ptr == NULL)
- return;
-
- rp = row;
- dp = display_row;
- if (rp != NULL && dp != NULL)
- for (i = 0; i < num_rows; i++)
- {
- png_bytep rptr = *rp++;
- png_bytep dptr = *dp++;
-
- png_read_row(png_ptr, rptr, dptr);
- }
-
- else if (rp != NULL)
- for (i = 0; i < num_rows; i++)
- {
- png_bytep rptr = *rp;
- png_read_row(png_ptr, rptr, NULL);
- rp++;
- }
-
- else if (dp != NULL)
- for (i = 0; i < num_rows; i++)
- {
- png_bytep dptr = *dp;
- png_read_row(png_ptr, NULL, dptr);
- dp++;
- }
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read the entire image. If the image has an alpha channel or a tRNS
- * chunk, and you have called png_handle_alpha()[*], you will need to
- * initialize the image to the current image that PNG will be overlaying.
- * We set the num_rows again here, in case it was incorrectly set in
- * png_read_start_row() by a call to png_read_update_info() or
- * png_start_read_image() if png_set_interlace_handling() wasn't called
- * prior to either of these functions like it should have been. You can
- * only call this function once. If you desire to have an image for
- * each pass of a interlaced image, use png_read_rows() instead.
- *
- * [*] png_handle_alpha() does not exist yet, as of this version of libpng
- */
-void PNGAPI
-png_read_image(png_structrp png_ptr, png_bytepp image)
-{
- png_uint_32 i, image_height;
- int pass, j;
- png_bytepp rp;
-
- png_debug(1, "in png_read_image");
-
- if (png_ptr == NULL)
- return;
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- if (!(png_ptr->flags & PNG_FLAG_ROW_INIT))
- {
- pass = png_set_interlace_handling(png_ptr);
- /* And make sure transforms are initialized. */
- png_start_read_image(png_ptr);
- }
- else
- {
- if (png_ptr->interlaced && !(png_ptr->transformations & PNG_INTERLACE))
- {
- /* Caller called png_start_read_image or png_read_update_info without
- * first turning on the PNG_INTERLACE transform. We can fix this here,
- * but the caller should do it!
- */
- png_warning(png_ptr, "Interlace handling should be turned on when "
- "using png_read_image");
- /* Make sure this is set correctly */
- png_ptr->num_rows = png_ptr->height;
- }
-
- /* Obtain the pass number, which also turns on the PNG_INTERLACE flag in
- * the above error case.
- */
- pass = png_set_interlace_handling(png_ptr);
- }
-#else
- if (png_ptr->interlaced)
- png_error(png_ptr,
- "Cannot read interlaced image -- interlace handler disabled");
-
- pass = 1;
-#endif
-
- image_height=png_ptr->height;
-
- for (j = 0; j < pass; j++)
- {
- rp = image;
- for (i = 0; i < image_height; i++)
- {
- png_read_row(png_ptr, *rp, NULL);
- rp++;
- }
- }
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-/* Read the end of the PNG file. Will not read past the end of the
- * file, will verify the end is accurate, and will read any comments
- * or time information at the end of the file, if info is not NULL.
- */
-void PNGAPI
-png_read_end(png_structrp png_ptr, png_inforp info_ptr)
-{
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- int keep;
-#endif
-
- png_debug(1, "in png_read_end");
-
- if (png_ptr == NULL)
- return;
-
- /* If png_read_end is called in the middle of reading the rows there may
- * still be pending IDAT data and an owned zstream. Deal with this here.
- */
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- if (!png_chunk_unknown_handling(png_ptr, png_IDAT))
-#endif
- png_read_finish_IDAT(png_ptr);
-
-#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
- /* Report invalid palette index; added at libng-1.5.10 */
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- png_ptr->num_palette_max > png_ptr->num_palette)
- png_benign_error(png_ptr, "Read palette index exceeding num_palette");
-#endif
-
- do
- {
- png_uint_32 length = png_read_chunk_header(png_ptr);
- png_uint_32 chunk_name = png_ptr->chunk_name;
-
- if (chunk_name == png_IHDR)
- png_handle_IHDR(png_ptr, info_ptr, length);
-
- else if (chunk_name == png_IEND)
- png_handle_IEND(png_ptr, info_ptr, length);
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
- else if ((keep = png_chunk_unknown_handling(png_ptr, chunk_name)) != 0)
- {
- if (chunk_name == png_IDAT)
- {
- if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
- png_benign_error(png_ptr, "Too many IDATs found");
- }
- png_handle_unknown(png_ptr, info_ptr, length, keep);
- if (chunk_name == png_PLTE)
- png_ptr->mode |= PNG_HAVE_PLTE;
- }
-#endif
-
- else if (chunk_name == png_IDAT)
- {
- /* Zero length IDATs are legal after the last IDAT has been
- * read, but not after other chunks have been read.
- */
- if ((length > 0) || (png_ptr->mode & PNG_HAVE_CHUNK_AFTER_IDAT))
- png_benign_error(png_ptr, "Too many IDATs found");
-
- png_crc_finish(png_ptr, length);
- }
- else if (chunk_name == png_PLTE)
- png_handle_PLTE(png_ptr, info_ptr, length);
-
-#ifdef PNG_READ_bKGD_SUPPORTED
- else if (chunk_name == png_bKGD)
- png_handle_bKGD(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
- else if (chunk_name == png_cHRM)
- png_handle_cHRM(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_gAMA_SUPPORTED
- else if (chunk_name == png_gAMA)
- png_handle_gAMA(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
- else if (chunk_name == png_hIST)
- png_handle_hIST(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
- else if (chunk_name == png_oFFs)
- png_handle_oFFs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
- else if (chunk_name == png_pCAL)
- png_handle_pCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
- else if (chunk_name == png_sCAL)
- png_handle_sCAL(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
- else if (chunk_name == png_pHYs)
- png_handle_pHYs(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
- else if (chunk_name == png_sBIT)
- png_handle_sBIT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sRGB_SUPPORTED
- else if (chunk_name == png_sRGB)
- png_handle_sRGB(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iCCP_SUPPORTED
- else if (chunk_name == png_iCCP)
- png_handle_iCCP(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_sPLT_SUPPORTED
- else if (chunk_name == png_sPLT)
- png_handle_sPLT(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
- else if (chunk_name == png_tEXt)
- png_handle_tEXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
- else if (chunk_name == png_tIME)
- png_handle_tIME(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_tRNS_SUPPORTED
- else if (chunk_name == png_tRNS)
- png_handle_tRNS(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
- else if (chunk_name == png_zTXt)
- png_handle_zTXt(png_ptr, info_ptr, length);
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
- else if (chunk_name == png_iTXt)
- png_handle_iTXt(png_ptr, info_ptr, length);
-#endif
-
- else
- png_handle_unknown(png_ptr, info_ptr, length,
- PNG_HANDLE_CHUNK_AS_DEFAULT);
- } while (!(png_ptr->mode & PNG_HAVE_IEND));
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-/* Free all memory used in the read struct */
-static void
-png_read_destroy(png_structrp png_ptr)
-{
- png_debug(1, "in png_read_destroy");
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
- png_destroy_gamma_table(png_ptr);
-#endif
-
- png_free(png_ptr, png_ptr->big_row_buf);
- png_free(png_ptr, png_ptr->big_prev_row);
- png_free(png_ptr, png_ptr->read_buffer);
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
- png_free(png_ptr, png_ptr->palette_lookup);
- png_free(png_ptr, png_ptr->quantize_index);
-#endif
-
- if (png_ptr->free_me & PNG_FREE_PLTE)
- png_zfree(png_ptr, png_ptr->palette);
- png_ptr->free_me &= ~PNG_FREE_PLTE;
-
-#if defined(PNG_tRNS_SUPPORTED) || \
- defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- if (png_ptr->free_me & PNG_FREE_TRNS)
- png_free(png_ptr, png_ptr->trans_alpha);
- png_ptr->free_me &= ~PNG_FREE_TRNS;
-#endif
-
- inflateEnd(&png_ptr->zstream);
-
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
- png_free(png_ptr, png_ptr->save_buffer);
-#endif
-
-#if defined(PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED) &&\
- defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
- png_free(png_ptr, png_ptr->unknown_chunk.data);
-#endif
-
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- png_free(png_ptr, png_ptr->chunk_list);
-#endif
-
- /* NOTE: the 'setjmp' buffer may still be allocated and the memory and error
- * callbacks are still set at this point. They are required to complete the
- * destruction of the png_struct itself.
- */
-}
-
-/* Free all memory used by the read */
-void PNGAPI
-png_destroy_read_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr,
- png_infopp end_info_ptr_ptr)
-{
- png_structrp png_ptr = NULL;
-
- png_debug(1, "in png_destroy_read_struct");
-
- if (png_ptr_ptr != NULL)
- png_ptr = *png_ptr_ptr;
-
- if (png_ptr == NULL)
- return;
-
- /* libpng 1.6.0: use the API to destroy info structs to ensure consistent
- * behavior. Prior to 1.6.0 libpng did extra 'info' destruction in this API.
- * The extra was, apparently, unnecessary yet this hides memory leak bugs.
- */
- png_destroy_info_struct(png_ptr, end_info_ptr_ptr);
- png_destroy_info_struct(png_ptr, info_ptr_ptr);
-
- *png_ptr_ptr = NULL;
- png_read_destroy(png_ptr);
- png_destroy_png_struct(png_ptr);
-}
-
-void PNGAPI
-png_set_read_status_fn(png_structrp png_ptr, png_read_status_ptr read_row_fn)
-{
- if (png_ptr == NULL)
- return;
-
- png_ptr->read_row_fn = read_row_fn;
-}
-
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-void PNGAPI
-png_read_png(png_structrp png_ptr, png_inforp info_ptr,
- int transforms,
- voidp params)
-{
- int row;
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- /* png_read_info() gives us all of the information from the
- * PNG file before the first IDAT (image data chunk).
- */
- png_read_info(png_ptr, info_ptr);
- if (info_ptr->height > PNG_UINT_32_MAX/(sizeof (png_bytep)))
- png_error(png_ptr, "Image is too high to process with png_read_png()");
-
- /* -------------- image transformations start here ------------------- */
-
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
- /* Tell libpng to strip 16-bit/color files down to 8 bits per color.
- */
- if (transforms & PNG_TRANSFORM_SCALE_16)
- {
- /* Added at libpng-1.5.4. "strip_16" produces the same result that it
- * did in earlier versions, while "scale_16" is now more accurate.
- */
- png_set_scale_16(png_ptr);
- }
-#endif
-
-#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
- /* If both SCALE and STRIP are required pngrtran will effectively cancel the
- * latter by doing SCALE first. This is ok and allows apps not to check for
- * which is supported to get the right answer.
- */
- if (transforms & PNG_TRANSFORM_STRIP_16)
- png_set_strip_16(png_ptr);
-#endif
-
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- /* Strip alpha bytes from the input data without combining with
- * the background (not recommended).
- */
- if (transforms & PNG_TRANSFORM_STRIP_ALPHA)
- png_set_strip_alpha(png_ptr);
-#endif
-
-#if defined(PNG_READ_PACK_SUPPORTED) && !defined(PNG_READ_EXPAND_SUPPORTED)
- /* Extract multiple pixels with bit depths of 1, 2, or 4 from a single
- * byte into separate bytes (useful for paletted and grayscale images).
- */
- if (transforms & PNG_TRANSFORM_PACKING)
- png_set_packing(png_ptr);
-#endif
-
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- /* Change the order of packed pixels to least significant bit first
- * (not useful if you are using png_set_packing).
- */
- if (transforms & PNG_TRANSFORM_PACKSWAP)
- png_set_packswap(png_ptr);
-#endif
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
- /* Expand paletted colors into true RGB triplets
- * Expand grayscale images to full 8 bits from 1, 2, or 4 bits/pixel
- * Expand paletted or RGB images with transparency to full alpha
- * channels so the data will be available as RGBA quartets.
- */
- if (transforms & PNG_TRANSFORM_EXPAND)
- if ((png_ptr->bit_depth < 8) ||
- (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE) ||
- (png_get_valid(png_ptr, info_ptr, PNG_INFO_tRNS)))
- png_set_expand(png_ptr);
-#endif
-
- /* We don't handle background color or gamma transformation or quantizing.
- */
-
-#ifdef PNG_READ_INVERT_SUPPORTED
- /* Invert monochrome files to have 0 as white and 1 as black
- */
- if (transforms & PNG_TRANSFORM_INVERT_MONO)
- png_set_invert_mono(png_ptr);
-#endif
-
-#ifdef PNG_READ_SHIFT_SUPPORTED
- /* If you want to shift the pixel values from the range [0,255] or
- * [0,65535] to the original [0,7] or [0,31], or whatever range the
- * colors were originally in:
- */
- if ((transforms & PNG_TRANSFORM_SHIFT)
- && png_get_valid(png_ptr, info_ptr, PNG_INFO_sBIT))
- {
- png_color_8p sig_bit;
-
- png_get_sBIT(png_ptr, info_ptr, &sig_bit);
- png_set_shift(png_ptr, sig_bit);
- }
-#endif
-
-#ifdef PNG_READ_BGR_SUPPORTED
- /* Flip the RGB pixels to BGR (or RGBA to BGRA) */
- if (transforms & PNG_TRANSFORM_BGR)
- png_set_bgr(png_ptr);
-#endif
-
-#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
- /* Swap the RGBA or GA data to ARGB or AG (or BGRA to ABGR) */
- if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
- png_set_swap_alpha(png_ptr);
-#endif
-
-#ifdef PNG_READ_SWAP_SUPPORTED
- /* Swap bytes of 16-bit files to least significant byte first */
- if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
- png_set_swap(png_ptr);
-#endif
-
-/* Added at libpng-1.2.41 */
-#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
- /* Invert the alpha channel from opacity to transparency */
- if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
- png_set_invert_alpha(png_ptr);
-#endif
-
-/* Added at libpng-1.2.41 */
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- /* Expand grayscale image to RGB */
- if (transforms & PNG_TRANSFORM_GRAY_TO_RGB)
- png_set_gray_to_rgb(png_ptr);
-#endif
-
-/* Added at libpng-1.5.4 */
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
- if (transforms & PNG_TRANSFORM_EXPAND_16)
- png_set_expand_16(png_ptr);
-#endif
-
- /* We don't handle adding filler bytes */
-
- /* We use png_read_image and rely on that for interlace handling, but we also
- * call png_read_update_info therefore must turn on interlace handling now:
- */
- (void)png_set_interlace_handling(png_ptr);
-
- /* Optional call to gamma correct and add the background to the palette
- * and update info structure. REQUIRED if you are expecting libpng to
- * update the palette for you (i.e., you selected such a transform above).
- */
- png_read_update_info(png_ptr, info_ptr);
-
- /* -------------- image transformations end here ------------------- */
-
- png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
- if (info_ptr->row_pointers == NULL)
- {
- png_uint_32 iptr;
-
- info_ptr->row_pointers = (png_bytepp)png_malloc(png_ptr,
- info_ptr->height * (sizeof (png_bytep)));
- for (iptr=0; iptr<info_ptr->height; iptr++)
- info_ptr->row_pointers[iptr] = NULL;
-
- info_ptr->free_me |= PNG_FREE_ROWS;
-
- for (row = 0; row < (int)info_ptr->height; row++)
- info_ptr->row_pointers[row] = (png_bytep)png_malloc(png_ptr,
- png_get_rowbytes(png_ptr, info_ptr));
- }
-
- png_read_image(png_ptr, info_ptr->row_pointers);
- info_ptr->valid |= PNG_INFO_IDAT;
-
- /* Read rest of file, and get additional chunks in info_ptr - REQUIRED */
- png_read_end(png_ptr, info_ptr);
-
- PNG_UNUSED(transforms) /* Quiet compiler warnings */
- PNG_UNUSED(params)
-
-}
-#endif /* PNG_INFO_IMAGE_SUPPORTED */
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-#ifdef PNG_SIMPLIFIED_READ_SUPPORTED
-/* SIMPLIFIED READ
- *
- * This code currently relies on the sequential reader, though it could easily
- * be made to work with the progressive one.
- */
-/* Arguments to png_image_finish_read: */
-
-/* Encoding of PNG data (used by the color-map code) */
-/* TODO: change these, dang, ANSI-C reserves the 'E' namespace. */
-# define E_NOTSET 0 /* File encoding not yet known */
-# define E_sRGB 1 /* 8-bit encoded to sRGB gamma */
-# define E_LINEAR 2 /* 16-bit linear: not encoded, NOT pre-multiplied! */
-# define E_FILE 3 /* 8-bit encoded to file gamma, not sRGB or linear */
-# define E_LINEAR8 4 /* 8-bit linear: only from a file value */
-
-/* Color-map processing: after libpng has run on the PNG image further
- * processing may be needed to conver the data to color-map indicies.
- */
-#define PNG_CMAP_NONE 0
-#define PNG_CMAP_GA 1 /* Process GA data to a color-map with alpha */
-#define PNG_CMAP_TRANS 2 /* Process GA data to a background index */
-#define PNG_CMAP_RGB 3 /* Process RGB data */
-#define PNG_CMAP_RGB_ALPHA 4 /* Process RGBA data */
-
-/* The following document where the background is for each processing case. */
-#define PNG_CMAP_NONE_BACKGROUND 256
-#define PNG_CMAP_GA_BACKGROUND 231
-#define PNG_CMAP_TRANS_BACKGROUND 254
-#define PNG_CMAP_RGB_BACKGROUND 256
-#define PNG_CMAP_RGB_ALPHA_BACKGROUND 216
-
-typedef struct
-{
- /* Arguments: */
- png_imagep image;
- png_voidp buffer;
- png_int_32 row_stride;
- png_voidp colormap;
- png_const_colorp background;
- /* Local variables: */
- png_voidp local_row;
- png_voidp first_row;
- ptrdiff_t row_bytes; /* step between rows */
- int file_encoding; /* E_ values above */
- png_fixed_point gamma_to_linear; /* For E_FILE, reciprocal of gamma */
- int colormap_processing; /* PNG_CMAP_ values above */
-} png_image_read_control;
-
-/* Do all the *safe* initialization - 'safe' means that png_error won't be
- * called, so setting up the jmp_buf is not required. This means that anything
- * called from here must *not* call png_malloc - it has to call png_malloc_warn
- * instead so that control is returned safely back to this routine.
- */
-static int
-png_image_read_init(png_imagep image)
-{
- if (image->opaque == NULL)
- {
- png_structp png_ptr = png_create_read_struct(PNG_LIBPNG_VER_STRING, image,
- png_safe_error, png_safe_warning);
-
- /* And set the rest of the structure to NULL to ensure that the various
- * fields are consistent.
- */
- memset(image, 0, (sizeof *image));
- image->version = PNG_IMAGE_VERSION;
-
- if (png_ptr != NULL)
- {
- png_infop info_ptr = png_create_info_struct(png_ptr);
-
- if (info_ptr != NULL)
- {
- png_controlp control = png_voidcast(png_controlp,
- png_malloc_warn(png_ptr, (sizeof *control)));
-
- if (control != NULL)
- {
- memset(control, 0, (sizeof *control));
-
- control->png_ptr = png_ptr;
- control->info_ptr = info_ptr;
- control->for_write = 0;
-
- image->opaque = control;
- return 1;
- }
-
- /* Error clean up */
- png_destroy_info_struct(png_ptr, &info_ptr);
- }
-
- png_destroy_read_struct(&png_ptr, NULL, NULL);
- }
-
- return png_image_error(image, "png_image_read: out of memory");
- }
-
- return png_image_error(image, "png_image_read: opaque pointer not NULL");
-}
-
-/* Utility to find the base format of a PNG file from a png_struct. */
-static png_uint_32
-png_image_format(png_structrp png_ptr)
-{
- png_uint_32 format = 0;
-
- if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
- format |= PNG_FORMAT_FLAG_COLOR;
-
- if (png_ptr->color_type & PNG_COLOR_MASK_ALPHA)
- format |= PNG_FORMAT_FLAG_ALPHA;
-
- /* Use png_ptr here, not info_ptr, because by examination png_handle_tRNS
- * sets the png_struct fields; that's all we are interested in here. The
- * precise interaction with an app call to png_set_tRNS and PNG file reading
- * is unclear.
- */
- else if (png_ptr->num_trans > 0)
- format |= PNG_FORMAT_FLAG_ALPHA;
-
- if (png_ptr->bit_depth == 16)
- format |= PNG_FORMAT_FLAG_LINEAR;
-
- if (png_ptr->color_type & PNG_COLOR_MASK_PALETTE)
- format |= PNG_FORMAT_FLAG_COLORMAP;
-
- return format;
-}
-
-/* Is the given gamma significantly different from sRGB? The test is the same
- * one used in pngrtran.c when deciding whether to do gamma correction. The
- * arithmetic optimizes the division by using the fact that the inverse of the
- * file sRGB gamma is 2.2
- */
-static int
-png_gamma_not_sRGB(png_fixed_point g)
-{
- if (g < PNG_FP_1)
- {
- /* An uninitialized gamma is assumed to be sRGB for the simplified API. */
- if (g == 0)
- return 0;
-
- return png_gamma_significant((g * 11 + 2)/5 /* i.e. *2.2, rounded */);
- }
-
- return 1;
-}
-
-/* Do the main body of a 'png_image_begin_read' function; read the PNG file
- * header and fill in all the information. This is executed in a safe context,
- * unlike the init routine above.
- */
-static int
-png_image_read_header(png_voidp argument)
-{
- png_imagep image = png_voidcast(png_imagep, argument);
- png_structrp png_ptr = image->opaque->png_ptr;
- png_inforp info_ptr = image->opaque->info_ptr;
-
- png_set_benign_errors(png_ptr, 1/*warn*/);
- png_read_info(png_ptr, info_ptr);
-
- /* Do this the fast way; just read directly out of png_struct. */
- image->width = png_ptr->width;
- image->height = png_ptr->height;
-
- {
- png_uint_32 format = png_image_format(png_ptr);
-
- image->format = format;
-
-#ifdef PNG_COLORSPACE_SUPPORTED
- /* Does the colorspace match sRGB? If there is no color endpoint
- * (colorant) information assume yes, otherwise require the
- * 'ENDPOINTS_MATCHE_sRGB' colorspace flag to have been set. If the
- * colorspace has been determined to be invalid ignore it.
- */
- if ((format & PNG_FORMAT_FLAG_COLOR) != 0 && ((png_ptr->colorspace.flags
- & (PNG_COLORSPACE_HAVE_ENDPOINTS|PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB|
- PNG_COLORSPACE_INVALID)) == PNG_COLORSPACE_HAVE_ENDPOINTS))
- image->flags |= PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB;
-#endif
- }
-
- /* We need the maximum number of entries regardless of the format the
- * application sets here.
- */
- {
- png_uint_32 cmap_entries;
-
- switch (png_ptr->color_type)
- {
- case PNG_COLOR_TYPE_GRAY:
- cmap_entries = 1U << png_ptr->bit_depth;
- break;
-
- case PNG_COLOR_TYPE_PALETTE:
- cmap_entries = png_ptr->num_palette;
- break;
-
- default:
- cmap_entries = 256;
- break;
- }
-
- if (cmap_entries > 256)
- cmap_entries = 256;
-
- image->colormap_entries = cmap_entries;
- }
-
- return 1;
-}
-
-#ifdef PNG_STDIO_SUPPORTED
-int PNGAPI
-png_image_begin_read_from_stdio(png_imagep image, FILE* file)
-{
- if (image != NULL && image->version == PNG_IMAGE_VERSION)
- {
- if (file != NULL)
- {
- if (png_image_read_init(image))
- {
- /* This is slightly evil, but png_init_io doesn't do anything other
- * than this and we haven't changed the standard IO functions so
- * this saves a 'safe' function.
- */
- image->opaque->png_ptr->io_ptr = file;
- return png_safe_execute(image, png_image_read_header, image);
- }
- }
-
- else
- return png_image_error(image,
- "png_image_begin_read_from_stdio: invalid argument");
- }
-
- else if (image != NULL)
- return png_image_error(image,
- "png_image_begin_read_from_stdio: incorrect PNG_IMAGE_VERSION");
-
- return 0;
-}
-
-int PNGAPI
-png_image_begin_read_from_file(png_imagep image, const char *file_name)
-{
- if (image != NULL && image->version == PNG_IMAGE_VERSION)
- {
- if (file_name != NULL)
- {
- FILE *fp = fopen(file_name, "rb");
-
- if (fp != NULL)
- {
- if (png_image_read_init(image))
- {
- image->opaque->png_ptr->io_ptr = fp;
- image->opaque->owned_file = 1;
- return png_safe_execute(image, png_image_read_header, image);
- }
-
- /* Clean up: just the opened file. */
- (void)fclose(fp);
- }
-
- else
- return png_image_error(image, strerror(errno));
- }
-
- else
- return png_image_error(image,
- "png_image_begin_read_from_file: invalid argument");
- }
-
- else if (image != NULL)
- return png_image_error(image,
- "png_image_begin_read_from_file: incorrect PNG_IMAGE_VERSION");
-
- return 0;
-}
-#endif /* PNG_STDIO_SUPPORTED */
-
-static void PNGCBAPI
-png_image_memory_read(png_structp png_ptr, png_bytep out, png_size_t need)
-{
- if (png_ptr != NULL)
- {
- png_imagep image = png_voidcast(png_imagep, png_ptr->io_ptr);
- if (image != NULL)
- {
- png_controlp cp = image->opaque;
- if (cp != NULL)
- {
- png_const_bytep memory = cp->memory;
- png_size_t size = cp->size;
-
- if (memory != NULL && size >= need)
- {
- memcpy(out, memory, need);
- cp->memory = memory + need;
- cp->size = size - need;
- return;
- }
-
- png_error(png_ptr, "read beyond end of data");
- }
- }
-
- png_error(png_ptr, "invalid memory read");
- }
-}
-
-int PNGAPI png_image_begin_read_from_memory(png_imagep image,
- png_const_voidp memory, png_size_t size)
-{
- if (image != NULL && image->version == PNG_IMAGE_VERSION)
- {
- if (memory != NULL && size > 0)
- {
- if (png_image_read_init(image))
- {
- /* Now set the IO functions to read from the memory buffer and
- * store it into io_ptr. Again do this in-place to avoid calling a
- * libpng function that requires error handling.
- */
- image->opaque->memory = png_voidcast(png_const_bytep, memory);
- image->opaque->size = size;
- image->opaque->png_ptr->io_ptr = image;
- image->opaque->png_ptr->read_data_fn = png_image_memory_read;
-
- return png_safe_execute(image, png_image_read_header, image);
- }
- }
-
- else
- return png_image_error(image,
- "png_image_begin_read_from_memory: invalid argument");
- }
-
- else if (image != NULL)
- return png_image_error(image,
- "png_image_begin_read_from_memory: incorrect PNG_IMAGE_VERSION");
-
- return 0;
-}
-
-/* Utility function to skip chunks that are not used by the simplified image
- * read functions and an appropriate macro to call it.
- */
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-static void
-png_image_skip_unused_chunks(png_structrp png_ptr)
-{
- /* Prepare the reader to ignore all recognized chunks whose data will not
- * be used, i.e., all chunks recognized by libpng except for those
- * involved in basic image reading:
- *
- * IHDR, PLTE, IDAT, IEND
- *
- * Or image data handling:
- *
- * tRNS, bKGD, gAMA, cHRM, sRGB, iCCP and sBIT.
- *
- * This provides a small performance improvement and eliminates any
- * potential vulnerability to security problems in the unused chunks.
- */
- {
- static PNG_CONST png_byte chunks_to_process[] = {
- 98, 75, 71, 68, '\0', /* bKGD */
- 99, 72, 82, 77, '\0', /* cHRM */
- 103, 65, 77, 65, '\0', /* gAMA */
- 105, 67, 67, 80, '\0', /* iCCP */
- 115, 66, 73, 84, '\0', /* sBIT */
- 115, 82, 71, 66, '\0', /* sRGB */
- };
-
- /* Ignore unknown chunks and all other chunks except for the
- * IHDR, PLTE, tRNS, IDAT, and IEND chunks.
- */
- png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_NEVER,
- NULL, -1);
-
- /* But do not ignore image data handling chunks */
- png_set_keep_unknown_chunks(png_ptr, PNG_HANDLE_CHUNK_AS_DEFAULT,
- chunks_to_process, (sizeof chunks_to_process)/5);
- }
-}
-
-# define PNG_SKIP_CHUNKS(p) png_image_skip_unused_chunks(p)
-#else
-# define PNG_SKIP_CHUNKS(p) ((void)0)
-#endif /* PNG_HANDLE_AS_UNKNOWN_SUPPORTED */
-
-/* The following macro gives the exact rounded answer for all values in the
- * range 0..255 (it actually divides by 51.2, but the rounding still generates
- * the correct numbers 0..5
- */
-#define PNG_DIV51(v8) (((v8) * 5 + 130) >> 8)
-
-/* Utility functions to make particular color-maps */
-static void
-set_file_encoding(png_image_read_control *display)
-{
- png_fixed_point g = display->image->opaque->png_ptr->colorspace.gamma;
- if (png_gamma_significant(g))
- {
- if (png_gamma_not_sRGB(g))
- {
- display->file_encoding = E_FILE;
- display->gamma_to_linear = png_reciprocal(g);
- }
-
- else
- display->file_encoding = E_sRGB;
- }
-
- else
- display->file_encoding = E_LINEAR8;
-}
-
-static unsigned int
-decode_gamma(png_image_read_control *display, png_uint_32 value, int encoding)
-{
- if (encoding == E_FILE) /* double check */
- encoding = display->file_encoding;
-
- if (encoding == E_NOTSET) /* must be the file encoding */
- {
- set_file_encoding(display);
- encoding = display->file_encoding;
- }
-
- switch (encoding)
- {
- case E_FILE:
- value = png_gamma_16bit_correct(value*257, display->gamma_to_linear);
- break;
-
- case E_sRGB:
- value = png_sRGB_table[value];
- break;
-
- case E_LINEAR:
- break;
-
- case E_LINEAR8:
- value *= 257;
- break;
-
- default:
- png_error(display->image->opaque->png_ptr,
- "unexpected encoding (internal error)");
- break;
- }
-
- return value;
-}
-
-static png_uint_32
-png_colormap_compose(png_image_read_control *display,
- png_uint_32 foreground, int foreground_encoding, png_uint_32 alpha,
- png_uint_32 background, int encoding)
-{
- /* The file value is composed on the background, the background has the given
- * encoding and so does the result, the file is encoded with E_FILE and the
- * file and alpha are 8-bit values. The (output) encoding will always be
- * E_LINEAR or E_sRGB.
- */
- png_uint_32 f = decode_gamma(display, foreground, foreground_encoding);
- png_uint_32 b = decode_gamma(display, background, encoding);
-
- /* The alpha is always an 8-bit value (it comes from the palette), the value
- * scaled by 255 is what PNG_sRGB_FROM_LINEAR requires.
- */
- f = f * alpha + b * (255-alpha);
-
- if (encoding == E_LINEAR)
- {
- /* Scale to 65535; divide by 255, approximately (in fact this is extremely
- * accurate, it divides by 255.00000005937181414556, with no overflow.)
- */
- f *= 257; /* Now scaled by 65535 */
- f += f >> 16;
- f = (f+32768) >> 16;
- }
-
- else /* E_sRGB */
- f = PNG_sRGB_FROM_LINEAR(f);
-
- return f;
-}
-
-/* NOTE: E_LINEAR values to this routine must be 16-bit, but E_FILE values must
- * be 8-bit.
- */
-static void
-png_create_colormap_entry(png_image_read_control *display,
- png_uint_32 ip, png_uint_32 red, png_uint_32 green, png_uint_32 blue,
- png_uint_32 alpha, int encoding)
-{
- png_imagep image = display->image;
- const int output_encoding = (image->format & PNG_FORMAT_FLAG_LINEAR) ?
- E_LINEAR : E_sRGB;
- const int convert_to_Y = (image->format & PNG_FORMAT_FLAG_COLOR) == 0 &&
- (red != green || green != blue);
-
- if (ip > 255)
- png_error(image->opaque->png_ptr, "color-map index out of range");
-
- /* Update the cache with whether the file gamma is significantly different
- * from sRGB.
- */
- if (encoding == E_FILE)
- {
- if (display->file_encoding == E_NOTSET)
- set_file_encoding(display);
-
- /* Note that the cached value may be E_FILE too, but if it is then the
- * gamma_to_linear member has been set.
- */
- encoding = display->file_encoding;
- }
-
- if (encoding == E_FILE)
- {
- png_fixed_point g = display->gamma_to_linear;
-
- red = png_gamma_16bit_correct(red*257, g);
- green = png_gamma_16bit_correct(green*257, g);
- blue = png_gamma_16bit_correct(blue*257, g);
-
- if (convert_to_Y || output_encoding == E_LINEAR)
- {
- alpha *= 257;
- encoding = E_LINEAR;
- }
-
- else
- {
- red = PNG_sRGB_FROM_LINEAR(red * 255);
- green = PNG_sRGB_FROM_LINEAR(green * 255);
- blue = PNG_sRGB_FROM_LINEAR(blue * 255);
- encoding = E_sRGB;
- }
- }
-
- else if (encoding == E_LINEAR8)
- {
- /* This encoding occurs quite frequently in test cases because PngSuite
- * includes a gAMA 1.0 chunk with most images.
- */
- red *= 257;
- green *= 257;
- blue *= 257;
- alpha *= 257;
- encoding = E_LINEAR;
- }
-
- else if (encoding == E_sRGB && (convert_to_Y || output_encoding == E_LINEAR))
- {
- /* The values are 8-bit sRGB values, but must be converted to 16-bit
- * linear.
- */
- red = png_sRGB_table[red];
- green = png_sRGB_table[green];
- blue = png_sRGB_table[blue];
- alpha *= 257;
- encoding = E_LINEAR;
- }
-
- /* This is set if the color isn't gray but the output is. */
- if (encoding == E_LINEAR)
- {
- if (convert_to_Y)
- {
- /* NOTE: these values are copied from png_do_rgb_to_gray */
- png_uint_32 y = (png_uint_32)6968 * red + (png_uint_32)23434 * green +
- (png_uint_32)2366 * blue;
-
- if (output_encoding == E_LINEAR)
- y = (y + 16384) >> 15;
-
- else
- {
- /* y is scaled by 32768, we need it scaled by 255: */
- y = (y + 128) >> 8;
- y *= 255;
- y = PNG_sRGB_FROM_LINEAR((y + 64) >> 7);
- encoding = E_sRGB;
- }
-
- blue = red = green = y;
- }
-
- else if (output_encoding == E_sRGB)
- {
- red = PNG_sRGB_FROM_LINEAR(red * 255);
- green = PNG_sRGB_FROM_LINEAR(green * 255);
- blue = PNG_sRGB_FROM_LINEAR(blue * 255);
- alpha = PNG_DIV257(alpha);
- encoding = E_sRGB;
- }
- }
-
- if (encoding != output_encoding)
- png_error(image->opaque->png_ptr, "bad encoding (internal error)");
-
- /* Store the value. */
- {
-# ifdef PNG_FORMAT_BGR_SUPPORTED
- const int afirst = (image->format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
- (image->format & PNG_FORMAT_FLAG_ALPHA) != 0;
-# else
-# define afirst 0
-# endif
-# ifdef PNG_FORMAT_BGR_SUPPORTED
- const int bgr = (image->format & PNG_FORMAT_FLAG_BGR) ? 2 : 0;
-# else
-# define bgr 0
-# endif
-
- if (output_encoding == E_LINEAR)
- {
- png_uint_16p entry = png_voidcast(png_uint_16p, display->colormap);
-
- entry += ip * PNG_IMAGE_SAMPLE_CHANNELS(image->format);
-
- /* The linear 16-bit values must be pre-multiplied by the alpha channel
- * value, if less than 65535 (this is, effectively, composite on black
- * if the alpha channel is removed.)
- */
- switch (PNG_IMAGE_SAMPLE_CHANNELS(image->format))
- {
- case 4:
- entry[afirst ? 0 : 3] = (png_uint_16)alpha;
- /* FALL THROUGH */
-
- case 3:
- if (alpha < 65535)
- {
- if (alpha > 0)
- {
- blue = (blue * alpha + 32767U)/65535U;
- green = (green * alpha + 32767U)/65535U;
- red = (red * alpha + 32767U)/65535U;
- }
-
- else
- red = green = blue = 0;
- }
- entry[afirst + (2 ^ bgr)] = (png_uint_16)blue;
- entry[afirst + 1] = (png_uint_16)green;
- entry[afirst + bgr] = (png_uint_16)red;
- break;
-
- case 2:
- entry[1 ^ afirst] = (png_uint_16)alpha;
- /* FALL THROUGH */
-
- case 1:
- if (alpha < 65535)
- {
- if (alpha > 0)
- green = (green * alpha + 32767U)/65535U;
-
- else
- green = 0;
- }
- entry[afirst] = (png_uint_16)green;
- break;
-
- default:
- break;
- }
- }
-
- else /* output encoding is E_sRGB */
- {
- png_bytep entry = png_voidcast(png_bytep, display->colormap);
-
- entry += ip * PNG_IMAGE_SAMPLE_CHANNELS(image->format);
-
- switch (PNG_IMAGE_SAMPLE_CHANNELS(image->format))
- {
- case 4:
- entry[afirst ? 0 : 3] = (png_byte)alpha;
- case 3:
- entry[afirst + (2 ^ bgr)] = (png_byte)blue;
- entry[afirst + 1] = (png_byte)green;
- entry[afirst + bgr] = (png_byte)red;
- break;
-
- case 2:
- entry[1 ^ afirst] = (png_byte)alpha;
- case 1:
- entry[afirst] = (png_byte)green;
- break;
-
- default:
- break;
- }
- }
-
-# ifdef afirst
-# undef afirst
-# endif
-# ifdef bgr
-# undef bgr
-# endif
- }
-}
-
-static int
-make_gray_file_colormap(png_image_read_control *display)
-{
- unsigned int i;
-
- for (i=0; i<256; ++i)
- png_create_colormap_entry(display, i, i, i, i, 255, E_FILE);
-
- return i;
-}
-
-static int
-make_gray_colormap(png_image_read_control *display)
-{
- unsigned int i;
-
- for (i=0; i<256; ++i)
- png_create_colormap_entry(display, i, i, i, i, 255, E_sRGB);
-
- return i;
-}
-#define PNG_GRAY_COLORMAP_ENTRIES 256
-
-static int
-make_ga_colormap(png_image_read_control *display)
-{
- unsigned int i, a;
-
- /* Alpha is retained, the output will be a color-map with entries
- * selected by six levels of alpha. One transparent entry, 6 gray
- * levels for all the intermediate alpha values, leaving 230 entries
- * for the opaque grays. The color-map entries are the six values
- * [0..5]*51, the GA processing uses PNG_DIV51(value) to find the
- * relevant entry.
- *
- * if (alpha > 229) // opaque
- * {
- * // The 231 entries are selected to make the math below work:
- * base = 0;
- * entry = (231 * gray + 128) >> 8;
- * }
- * else if (alpha < 26) // transparent
- * {
- * base = 231;
- * entry = 0;
- * }
- * else // partially opaque
- * {
- * base = 226 + 6 * PNG_DIV51(alpha);
- * entry = PNG_DIV51(gray);
- * }
- */
- i = 0;
- while (i < 231)
- {
- unsigned int gray = (i * 256 + 115) / 231;
- png_create_colormap_entry(display, i++, gray, gray, gray, 255, E_sRGB);
- }
-
- /* 255 is used here for the component values for consistency with the code
- * that undoes premultiplication in pngwrite.c.
- */
- png_create_colormap_entry(display, i++, 255, 255, 255, 0, E_sRGB);
-
- for (a=1; a<5; ++a)
- {
- unsigned int g;
-
- for (g=0; g<6; ++g)
- png_create_colormap_entry(display, i++, g*51, g*51, g*51, a*51,
- E_sRGB);
- }
-
- return i;
-}
-
-#define PNG_GA_COLORMAP_ENTRIES 256
-
-static int
-make_rgb_colormap(png_image_read_control *display)
-{
- unsigned int i, r;
-
- /* Build a 6x6x6 opaque RGB cube */
- for (i=r=0; r<6; ++r)
- {
- unsigned int g;
-
- for (g=0; g<6; ++g)
- {
- unsigned int b;
-
- for (b=0; b<6; ++b)
- png_create_colormap_entry(display, i++, r*51, g*51, b*51, 255,
- E_sRGB);
- }
- }
-
- return i;
-}
-
-#define PNG_RGB_COLORMAP_ENTRIES 216
-
-/* Return a palette index to the above palette given three 8-bit sRGB values. */
-#define PNG_RGB_INDEX(r,g,b) \
- ((png_byte)(6 * (6 * PNG_DIV51(r) + PNG_DIV51(g)) + PNG_DIV51(b)))
-
-static int
-png_image_read_colormap(png_voidp argument)
-{
- png_image_read_control *display =
- png_voidcast(png_image_read_control*, argument);
- const png_imagep image = display->image;
-
- const png_structrp png_ptr = image->opaque->png_ptr;
- const png_uint_32 output_format = image->format;
- const int output_encoding = (output_format & PNG_FORMAT_FLAG_LINEAR) ?
- E_LINEAR : E_sRGB;
-
- unsigned int cmap_entries;
- unsigned int output_processing; /* Output processing option */
- unsigned int data_encoding = E_NOTSET; /* Encoding libpng must produce */
-
- /* Background information; the background color and the index of this color
- * in the color-map if it exists (else 256).
- */
- unsigned int background_index = 256;
- png_uint_32 back_r, back_g, back_b;
-
- /* Flags to accumulate things that need to be done to the input. */
- int expand_tRNS = 0;
-
- /* Exclude the NYI feature of compositing onto a color-mapped buffer; it is
- * very difficult to do, the results look awful, and it is difficult to see
- * what possible use it is because the application can't control the
- * color-map.
- */
- if (((png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0 ||
- png_ptr->num_trans > 0) /* alpha in input */ &&
- ((output_format & PNG_FORMAT_FLAG_ALPHA) == 0) /* no alpha in output */)
- {
- if (output_encoding == E_LINEAR) /* compose on black */
- back_b = back_g = back_r = 0;
-
- else if (display->background == NULL /* no way to remove it */)
- png_error(png_ptr,
- "a background color must be supplied to remove alpha/transparency");
-
- /* Get a copy of the background color (this avoids repeating the checks
- * below.) The encoding is 8-bit sRGB or 16-bit linear, depending on the
- * output format.
- */
- else
- {
- back_g = display->background->green;
- if (output_format & PNG_FORMAT_FLAG_COLOR)
- {
- back_r = display->background->red;
- back_b = display->background->blue;
- }
- else
- back_b = back_r = back_g;
- }
- }
-
- else if (output_encoding == E_LINEAR)
- back_b = back_r = back_g = 65535;
-
- else
- back_b = back_r = back_g = 255;
-
- /* Default the input file gamma if required - this is necessary because
- * libpng assumes that if no gamma information is present the data is in the
- * output format, but the simplified API deduces the gamma from the input
- * format.
- */
- if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_GAMMA) == 0)
- {
- /* Do this directly, not using the png_colorspace functions, to ensure
- * that it happens even if the colorspace is invalid (though probably if
- * it is the setting will be ignored) Note that the same thing can be
- * achieved at the application interface with png_set_gAMA.
- */
- if (png_ptr->bit_depth == 16 &&
- (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0)
- png_ptr->colorspace.gamma = PNG_GAMMA_LINEAR;
-
- else
- png_ptr->colorspace.gamma = PNG_GAMMA_sRGB_INVERSE;
-
- png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
- }
-
- /* Decide what to do based on the PNG color type of the input data. The
- * utility function png_create_colormap_entry deals with most aspects of the
- * output transformations; this code works out how to produce bytes of
- * color-map entries from the original format.
- */
- switch (png_ptr->color_type)
- {
- case PNG_COLOR_TYPE_GRAY:
- if (png_ptr->bit_depth <= 8)
- {
- /* There at most 256 colors in the output, regardless of
- * transparency.
- */
- unsigned int step, i, val, trans = 256/*ignore*/, back_alpha = 0;
-
- cmap_entries = 1U << png_ptr->bit_depth;
- if (cmap_entries > image->colormap_entries)
- png_error(png_ptr, "gray[8] color-map: too few entries");
-
- step = 255 / (cmap_entries - 1);
- output_processing = PNG_CMAP_NONE;
-
- /* If there is a tRNS chunk then this either selects a transparent
- * value or, if the output has no alpha, the background color.
- */
- if (png_ptr->num_trans > 0)
- {
- trans = png_ptr->trans_color.gray;
-
- if ((output_format & PNG_FORMAT_FLAG_ALPHA) == 0)
- back_alpha = output_encoding == E_LINEAR ? 65535 : 255;
- }
-
- /* png_create_colormap_entry just takes an RGBA and writes the
- * corresponding color-map entry using the format from 'image',
- * including the required conversion to sRGB or linear as
- * appropriate. The input values are always either sRGB (if the
- * gamma correction flag is 0) or 0..255 scaled file encoded values
- * (if the function must gamma correct them).
- */
- for (i=val=0; i<cmap_entries; ++i, val += step)
- {
- /* 'i' is a file value. While this will result in duplicated
- * entries for 8-bit non-sRGB encoded files it is necessary to
- * have non-gamma corrected values to do tRNS handling.
- */
- if (i != trans)
- png_create_colormap_entry(display, i, val, val, val, 255,
- E_FILE/*8-bit with file gamma*/);
-
- /* Else this entry is transparent. The colors don't matter if
- * there is an alpha channel (back_alpha == 0), but it does no
- * harm to pass them in; the values are not set above so this
- * passes in white.
- *
- * NOTE: this preserves the full precision of the application
- * supplied background color when it is used.
- */
- else
- png_create_colormap_entry(display, i, back_r, back_g, back_b,
- back_alpha, output_encoding);
- }
-
- /* We need libpng to preserve the original encoding. */
- data_encoding = E_FILE;
-
- /* The rows from libpng, while technically gray values, are now also
- * color-map indicies; however, they may need to be expanded to 1
- * byte per pixel. This is what png_set_packing does (i.e., it
- * unpacks the bit values into bytes.)
- */
- if (png_ptr->bit_depth < 8)
- png_set_packing(png_ptr);
- }
-
- else /* bit depth is 16 */
- {
- /* The 16-bit input values can be converted directly to 8-bit gamma
- * encoded values; however, if a tRNS chunk is present 257 color-map
- * entries are required. This means that the extra entry requires
- * special processing; add an alpha channel, sacrifice gray level
- * 254 and convert transparent (alpha==0) entries to that.
- *
- * Use libpng to chop the data to 8 bits. Convert it to sRGB at the
- * same time to minimize quality loss. If a tRNS chunk is present
- * this means libpng must handle it too; otherwise it is impossible
- * to do the exact match on the 16-bit value.
- *
- * If the output has no alpha channel *and* the background color is
- * gray then it is possible to let libpng handle the substitution by
- * ensuring that the corresponding gray level matches the background
- * color exactly.
- */
- data_encoding = E_sRGB;
-
- if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "gray[16] color-map: too few entries");
-
- cmap_entries = make_gray_colormap(display);
-
- if (png_ptr->num_trans > 0)
- {
- unsigned int back_alpha;
-
- if (output_format & PNG_FORMAT_FLAG_ALPHA)
- back_alpha = 0;
-
- else
- {
- if (back_r == back_g && back_g == back_b)
- {
- /* Background is gray; no special processing will be
- * required.
- */
- png_color_16 c;
- png_uint_32 gray = back_g;
-
- if (output_encoding == E_LINEAR)
- {
- gray = PNG_sRGB_FROM_LINEAR(gray * 255);
-
- /* And make sure the corresponding palette entry
- * matches.
- */
- png_create_colormap_entry(display, gray, back_g, back_g,
- back_g, 65535, E_LINEAR);
- }
-
- /* The background passed to libpng, however, must be the
- * sRGB value.
- */
- c.index = 0; /*unused*/
- c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
-
- /* NOTE: does this work without expanding tRNS to alpha?
- * It should be the color->gray case below apparently
- * doesn't.
- */
- png_set_background_fixed(png_ptr, &c,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
- 0/*gamma: not used*/);
-
- output_processing = PNG_CMAP_NONE;
- break;
- }
-
- back_alpha = output_encoding == E_LINEAR ? 65535 : 255;
- }
-
- /* output_processing means that the libpng-processed row will be
- * 8-bit GA and it has to be processing to single byte color-map
- * values. Entry 254 is replaced by either a completely
- * transparent entry or by the background color at full
- * precision (and the background color is not a simple gray leve
- * in this case.)
- */
- expand_tRNS = 1;
- output_processing = PNG_CMAP_TRANS;
- background_index = 254;
-
- /* And set (overwrite) color-map entry 254 to the actual
- * background color at full precision.
- */
- png_create_colormap_entry(display, 254, back_r, back_g, back_b,
- back_alpha, output_encoding);
- }
-
- else
- output_processing = PNG_CMAP_NONE;
- }
- break;
-
- case PNG_COLOR_TYPE_GRAY_ALPHA:
- /* 8-bit or 16-bit PNG with two channels - gray and alpha. A minimum
- * of 65536 combinations. If, however, the alpha channel is to be
- * removed there are only 256 possibilities if the background is gray.
- * (Otherwise there is a subset of the 65536 possibilities defined by
- * the triangle between black, white and the background color.)
- *
- * Reduce 16-bit files to 8-bit and sRGB encode the result. No need to
- * worry about tRNS matching - tRNS is ignored if there is an alpha
- * channel.
- */
- data_encoding = E_sRGB;
-
- if (output_format & PNG_FORMAT_FLAG_ALPHA)
- {
- if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "gray+alpha color-map: too few entries");
-
- cmap_entries = make_ga_colormap(display);
-
- background_index = PNG_CMAP_GA_BACKGROUND;
- output_processing = PNG_CMAP_GA;
- }
-
- else /* alpha is removed */
- {
- /* Alpha must be removed as the PNG data is processed when the
- * background is a color because the G and A channels are
- * independent and the vector addition (non-parallel vectors) is a
- * 2-D problem.
- *
- * This can be reduced to the same algorithm as above by making a
- * colormap containing gray levels (for the opaque grays), a
- * background entry (for a transparent pixel) and a set of four six
- * level color values, one set for each intermediate alpha value.
- * See the comments in make_ga_colormap for how this works in the
- * per-pixel processing.
- *
- * If the background is gray, however, we only need a 256 entry gray
- * level color map. It is sufficient to make the entry generated
- * for the background color be exactly the color specified.
- */
- if ((output_format & PNG_FORMAT_FLAG_COLOR) == 0 ||
- (back_r == back_g && back_g == back_b))
- {
- /* Background is gray; no special processing will be required. */
- png_color_16 c;
- png_uint_32 gray = back_g;
-
- if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "gray-alpha color-map: too few entries");
-
- cmap_entries = make_gray_colormap(display);
-
- if (output_encoding == E_LINEAR)
- {
- gray = PNG_sRGB_FROM_LINEAR(gray * 255);
-
- /* And make sure the corresponding palette entry matches. */
- png_create_colormap_entry(display, gray, back_g, back_g,
- back_g, 65535, E_LINEAR);
- }
-
- /* The background passed to libpng, however, must be the sRGB
- * value.
- */
- c.index = 0; /*unused*/
- c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
-
- png_set_background_fixed(png_ptr, &c,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
- 0/*gamma: not used*/);
-
- output_processing = PNG_CMAP_NONE;
- }
-
- else
- {
- png_uint_32 i, a;
-
- /* This is the same as png_make_ga_colormap, above, except that
- * the entries are all opaque.
- */
- if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "ga-alpha color-map: too few entries");
-
- i = 0;
- while (i < 231)
- {
- png_uint_32 gray = (i * 256 + 115) / 231;
- png_create_colormap_entry(display, i++, gray, gray, gray,
- 255, E_sRGB);
- }
-
- /* NOTE: this preserves the full precision of the application
- * background color.
- */
- background_index = i;
- png_create_colormap_entry(display, i++, back_r, back_g, back_b,
- output_encoding == E_LINEAR ? 65535U : 255U, output_encoding);
-
- /* For non-opaque input composite on the sRGB background - this
- * requires inverting the encoding for each component. The input
- * is still converted to the sRGB encoding because this is a
- * reasonable approximate to the logarithmic curve of human
- * visual sensitivity, at least over the narrow range which PNG
- * represents. Consequently 'G' is always sRGB encoded, while
- * 'A' is linear. We need the linear background colors.
- */
- if (output_encoding == E_sRGB) /* else already linear */
- {
- /* This may produce a value not exactly matching the
- * background, but that's ok because these numbers are only
- * used when alpha != 0
- */
- back_r = png_sRGB_table[back_r];
- back_g = png_sRGB_table[back_g];
- back_b = png_sRGB_table[back_b];
- }
-
- for (a=1; a<5; ++a)
- {
- unsigned int g;
-
- /* PNG_sRGB_FROM_LINEAR expects a 16-bit linear value scaled
- * by an 8-bit alpha value (0..255).
- */
- png_uint_32 alpha = 51 * a;
- png_uint_32 back_rx = (255-alpha) * back_r;
- png_uint_32 back_gx = (255-alpha) * back_g;
- png_uint_32 back_bx = (255-alpha) * back_b;
-
- for (g=0; g<6; ++g)
- {
- png_uint_32 gray = png_sRGB_table[g*51] * alpha;
-
- png_create_colormap_entry(display, i++,
- PNG_sRGB_FROM_LINEAR(gray + back_rx),
- PNG_sRGB_FROM_LINEAR(gray + back_gx),
- PNG_sRGB_FROM_LINEAR(gray + back_bx), 255, E_sRGB);
- }
- }
-
- cmap_entries = i;
- output_processing = PNG_CMAP_GA;
- }
- }
- break;
-
- case PNG_COLOR_TYPE_RGB:
- case PNG_COLOR_TYPE_RGB_ALPHA:
- /* Exclude the case where the output is gray; we can always handle this
- * with the cases above.
- */
- if ((output_format & PNG_FORMAT_FLAG_COLOR) == 0)
- {
- /* The color-map will be grayscale, so we may as well convert the
- * input RGB values to a simple grayscale and use the grayscale
- * code above.
- *
- * NOTE: calling this apparently damages the recognition of the
- * transparent color in background color handling; call
- * png_set_tRNS_to_alpha before png_set_background_fixed.
- */
- png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE, -1,
- -1);
- data_encoding = E_sRGB;
-
- /* The output will now be one or two 8-bit gray or gray+alpha
- * channels. The more complex case arises when the input has alpha.
- */
- if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
- png_ptr->num_trans > 0) &&
- (output_format & PNG_FORMAT_FLAG_ALPHA) != 0)
- {
- /* Both input and output have an alpha channel, so no background
- * processing is required; just map the GA bytes to the right
- * color-map entry.
- */
- expand_tRNS = 1;
-
- if (PNG_GA_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "rgb[ga] color-map: too few entries");
-
- cmap_entries = make_ga_colormap(display);
- background_index = PNG_CMAP_GA_BACKGROUND;
- output_processing = PNG_CMAP_GA;
- }
-
- else
- {
- /* Either the input or the output has no alpha channel, so there
- * will be no non-opaque pixels in the color-map; it will just be
- * grayscale.
- */
- if (PNG_GRAY_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "rgb[gray] color-map: too few entries");
-
- /* Ideally this code would use libpng to do the gamma correction,
- * but if an input alpha channel is to be removed we will hit the
- * libpng bug in gamma+compose+rgb-to-gray (the double gamma
- * correction bug). Fix this by dropping the gamma correction in
- * this case and doing it in the palette; this will result in
- * duplicate palette entries, but that's better than the
- * alternative of double gamma correction.
- */
- if ((png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
- png_ptr->num_trans > 0) &&
- png_gamma_not_sRGB(png_ptr->colorspace.gamma))
- {
- cmap_entries = make_gray_file_colormap(display);
- data_encoding = E_FILE;
- }
-
- else
- cmap_entries = make_gray_colormap(display);
-
- /* But if the input has alpha or transparency it must be removed
- */
- if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
- png_ptr->num_trans > 0)
- {
- png_color_16 c;
- png_uint_32 gray = back_g;
-
- /* We need to ensure that the application background exists in
- * the colormap and that completely transparent pixels map to
- * it. Achieve this simply by ensuring that the entry
- * selected for the background really is the background color.
- */
- if (data_encoding == E_FILE) /* from the fixup above */
- {
- /* The app supplied a gray which is in output_encoding, we
- * need to convert it to a value of the input (E_FILE)
- * encoding then set this palette entry to the required
- * output encoding.
- */
- if (output_encoding == E_sRGB)
- gray = png_sRGB_table[gray]; /* now E_LINEAR */
-
- gray = PNG_DIV257(png_gamma_16bit_correct(gray,
- png_ptr->colorspace.gamma)); /* now E_FILE */
-
- /* And make sure the corresponding palette entry contains
- * exactly the required sRGB value.
- */
- png_create_colormap_entry(display, gray, back_g, back_g,
- back_g, 0/*unused*/, output_encoding);
- }
-
- else if (output_encoding == E_LINEAR)
- {
- gray = PNG_sRGB_FROM_LINEAR(gray * 255);
-
- /* And make sure the corresponding palette entry matches.
- */
- png_create_colormap_entry(display, gray, back_g, back_g,
- back_g, 0/*unused*/, E_LINEAR);
- }
-
- /* The background passed to libpng, however, must be the
- * output (normally sRGB) value.
- */
- c.index = 0; /*unused*/
- c.gray = c.red = c.green = c.blue = (png_uint_16)gray;
-
- /* NOTE: the following is apparently a bug in libpng. Without
- * it the transparent color recognition in
- * png_set_background_fixed seems to go wrong.
- */
- expand_tRNS = 1;
- png_set_background_fixed(png_ptr, &c,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
- 0/*gamma: not used*/);
- }
-
- output_processing = PNG_CMAP_NONE;
- }
- }
-
- else /* output is color */
- {
- /* We could use png_quantize here so long as there is no transparent
- * color or alpha; png_quantize ignores alpha. Easier overall just
- * to do it once and using PNG_DIV51 on the 6x6x6 reduced RGB cube.
- * Consequently we always want libpng to produce sRGB data.
- */
- data_encoding = E_sRGB;
-
- /* Is there any transparency or alpha? */
- if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
- png_ptr->num_trans > 0)
- {
- /* Is there alpha in the output too? If so all four channels are
- * processed into a special RGB cube with alpha support.
- */
- if (output_format & PNG_FORMAT_FLAG_ALPHA)
- {
- png_uint_32 r;
-
- if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries)
- png_error(png_ptr, "rgb+alpha color-map: too few entries");
-
- cmap_entries = make_rgb_colormap(display);
-
- /* Add a transparent entry. */
- png_create_colormap_entry(display, cmap_entries, 255, 255,
- 255, 0, E_sRGB);
-
- /* This is stored as the background index for the processing
- * algorithm.
- */
- background_index = cmap_entries++;
-
- /* Add 27 r,g,b entries each with alpha 0.5. */
- for (r=0; r<256; r = (r << 1) | 0x7f)
- {
- png_uint_32 g;
-
- for (g=0; g<256; g = (g << 1) | 0x7f)
- {
- png_uint_32 b;
-
- /* This generates components with the values 0, 127 and
- * 255
- */
- for (b=0; b<256; b = (b << 1) | 0x7f)
- png_create_colormap_entry(display, cmap_entries++,
- r, g, b, 128, E_sRGB);
- }
- }
-
- expand_tRNS = 1;
- output_processing = PNG_CMAP_RGB_ALPHA;
- }
-
- else
- {
- /* Alpha/transparency must be removed. The background must
- * exist in the color map (achieved by setting adding it after
- * the 666 color-map). If the standard processing code will
- * pick up this entry automatically that's all that is
- * required; libpng can be called to do the background
- * processing.
- */
- unsigned int sample_size =
- PNG_IMAGE_SAMPLE_SIZE(output_format);
- png_uint_32 r, g, b; /* sRGB background */
-
- if (PNG_RGB_COLORMAP_ENTRIES+1+27 > image->colormap_entries)
- png_error(png_ptr, "rgb-alpha color-map: too few entries");
-
- cmap_entries = make_rgb_colormap(display);
-
- png_create_colormap_entry(display, cmap_entries, back_r,
- back_g, back_b, 0/*unused*/, output_encoding);
-
- if (output_encoding == E_LINEAR)
- {
- r = PNG_sRGB_FROM_LINEAR(back_r * 255);
- g = PNG_sRGB_FROM_LINEAR(back_g * 255);
- b = PNG_sRGB_FROM_LINEAR(back_b * 255);
- }
-
- else
- {
- r = back_r;
- g = back_g;
- b = back_g;
- }
-
- /* Compare the newly-created color-map entry with the one the
- * PNG_CMAP_RGB algorithm will use. If the two entries don't
- * match, add the new one and set this as the background
- * index.
- */
- if (memcmp((png_const_bytep)display->colormap +
- sample_size * cmap_entries,
- (png_const_bytep)display->colormap +
- sample_size * PNG_RGB_INDEX(r,g,b),
- sample_size) != 0)
- {
- /* The background color must be added. */
- background_index = cmap_entries++;
-
- /* Add 27 r,g,b entries each with created by composing with
- * the background at alpha 0.5.
- */
- for (r=0; r<256; r = (r << 1) | 0x7f)
- {
- for (g=0; g<256; g = (g << 1) | 0x7f)
- {
- /* This generates components with the values 0, 127
- * and 255
- */
- for (b=0; b<256; b = (b << 1) | 0x7f)
- png_create_colormap_entry(display, cmap_entries++,
- png_colormap_compose(display, r, E_sRGB, 128,
- back_r, output_encoding),
- png_colormap_compose(display, g, E_sRGB, 128,
- back_g, output_encoding),
- png_colormap_compose(display, b, E_sRGB, 128,
- back_b, output_encoding),
- 0/*unused*/, output_encoding);
- }
- }
-
- expand_tRNS = 1;
- output_processing = PNG_CMAP_RGB_ALPHA;
- }
-
- else /* background color is in the standard color-map */
- {
- png_color_16 c;
-
- c.index = 0; /*unused*/
- c.red = (png_uint_16)back_r;
- c.gray = c.green = (png_uint_16)back_g;
- c.blue = (png_uint_16)back_b;
-
- png_set_background_fixed(png_ptr, &c,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
- 0/*gamma: not used*/);
-
- output_processing = PNG_CMAP_RGB;
- }
- }
- }
-
- else /* no alpha or transparency in the input */
- {
- /* Alpha in the output is irrelevant, simply map the opaque input
- * pixels to the 6x6x6 color-map.
- */
- if (PNG_RGB_COLORMAP_ENTRIES > image->colormap_entries)
- png_error(png_ptr, "rgb color-map: too few entries");
-
- cmap_entries = make_rgb_colormap(display);
- output_processing = PNG_CMAP_RGB;
- }
- }
- break;
-
- case PNG_COLOR_TYPE_PALETTE:
- /* It's already got a color-map. It may be necessary to eliminate the
- * tRNS entries though.
- */
- {
- unsigned int num_trans = png_ptr->num_trans;
- png_const_bytep trans = num_trans > 0 ? png_ptr->trans_alpha : NULL;
- png_const_colorp colormap = png_ptr->palette;
- const int do_background = trans != NULL &&
- (output_format & PNG_FORMAT_FLAG_ALPHA) == 0;
- unsigned int i;
-
- /* Just in case: */
- if (trans == NULL)
- num_trans = 0;
-
- output_processing = PNG_CMAP_NONE;
- data_encoding = E_FILE; /* Don't change from color-map indicies */
- cmap_entries = png_ptr->num_palette;
- if (cmap_entries > 256)
- cmap_entries = 256;
-
- if (cmap_entries > image->colormap_entries)
- png_error(png_ptr, "palette color-map: too few entries");
-
- for (i=0; i < cmap_entries; ++i)
- {
- if (do_background && i < num_trans && trans[i] < 255)
- {
- if (trans[i] == 0)
- png_create_colormap_entry(display, i, back_r, back_g,
- back_b, 0, output_encoding);
-
- else
- {
- /* Must compose the PNG file color in the color-map entry
- * on the sRGB color in 'back'.
- */
- png_create_colormap_entry(display, i,
- png_colormap_compose(display, colormap[i].red, E_FILE,
- trans[i], back_r, output_encoding),
- png_colormap_compose(display, colormap[i].green, E_FILE,
- trans[i], back_g, output_encoding),
- png_colormap_compose(display, colormap[i].blue, E_FILE,
- trans[i], back_b, output_encoding),
- output_encoding == E_LINEAR ? trans[i] * 257U :
- trans[i],
- output_encoding);
- }
- }
-
- else
- png_create_colormap_entry(display, i, colormap[i].red,
- colormap[i].green, colormap[i].blue,
- i < num_trans ? trans[i] : 255U, E_FILE/*8-bit*/);
- }
-
- /* The PNG data may have indicies packed in fewer than 8 bits, it
- * must be expanded if so.
- */
- if (png_ptr->bit_depth < 8)
- png_set_packing(png_ptr);
- }
- break;
-
- default:
- png_error(png_ptr, "invalid PNG color type");
- /*NOT REACHED*/
- break;
- }
-
- /* Now deal with the output processing */
- if (expand_tRNS && png_ptr->num_trans > 0 &&
- (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) == 0)
- png_set_tRNS_to_alpha(png_ptr);
-
- switch (data_encoding)
- {
- default:
- png_error(png_ptr, "bad data option (internal error)");
- break;
-
- case E_sRGB:
- /* Change to 8-bit sRGB */
- png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, PNG_GAMMA_sRGB);
- /* FALL THROUGH */
-
- case E_FILE:
- if (png_ptr->bit_depth > 8)
- png_set_scale_16(png_ptr);
- break;
- }
-
- if (cmap_entries > 256 || cmap_entries > image->colormap_entries)
- png_error(png_ptr, "color map overflow (BAD internal error)");
-
- image->colormap_entries = cmap_entries;
-
- /* Double check using the recorded background index */
- switch (output_processing)
- {
- case PNG_CMAP_NONE:
- if (background_index != PNG_CMAP_NONE_BACKGROUND)
- goto bad_background;
- break;
-
- case PNG_CMAP_GA:
- if (background_index != PNG_CMAP_GA_BACKGROUND)
- goto bad_background;
- break;
-
- case PNG_CMAP_TRANS:
- if (background_index >= cmap_entries ||
- background_index != PNG_CMAP_TRANS_BACKGROUND)
- goto bad_background;
- break;
-
- case PNG_CMAP_RGB:
- if (background_index != PNG_CMAP_RGB_BACKGROUND)
- goto bad_background;
- break;
-
- case PNG_CMAP_RGB_ALPHA:
- if (background_index != PNG_CMAP_RGB_ALPHA_BACKGROUND)
- goto bad_background;
- break;
-
- default:
- png_error(png_ptr, "bad processing option (internal error)");
-
- bad_background:
- png_error(png_ptr, "bad background index (internal error)");
- }
-
- display->colormap_processing = output_processing;
-
- return 1/*ok*/;
-}
-
-/* The final part of the color-map read called from png_image_finish_read. */
-static int
-png_image_read_and_map(png_voidp argument)
-{
- png_image_read_control *display = png_voidcast(png_image_read_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
- int passes;
-
- /* Called when the libpng data must be transformed into the color-mapped
- * form. There is a local row buffer in display->local and this routine must
- * do the interlace handling.
- */
- switch (png_ptr->interlaced)
- {
- case PNG_INTERLACE_NONE:
- passes = 1;
- break;
-
- case PNG_INTERLACE_ADAM7:
- passes = PNG_INTERLACE_ADAM7_PASSES;
- break;
-
- default:
- passes = 0;
- png_error(png_ptr, "unknown interlace type");
- }
-
- {
- png_uint_32 height = image->height;
- png_uint_32 width = image->width;
- int proc = display->colormap_processing;
- png_bytep first_row = png_voidcast(png_bytep, display->first_row);
- ptrdiff_t step_row = display->row_bytes;
- int pass;
-
- for (pass = 0; pass < passes; ++pass)
- {
- unsigned int startx, stepx, stepy;
- png_uint_32 y;
-
- if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
- {
- /* The row may be empty for a short image: */
- if (PNG_PASS_COLS(width, pass) == 0)
- continue;
-
- startx = PNG_PASS_START_COL(pass);
- stepx = PNG_PASS_COL_OFFSET(pass);
- y = PNG_PASS_START_ROW(pass);
- stepy = PNG_PASS_ROW_OFFSET(pass);
- }
-
- else
- {
- y = 0;
- startx = 0;
- stepx = stepy = 1;
- }
-
- for (; y<height; y += stepy)
- {
- png_bytep inrow = png_voidcast(png_bytep, display->local_row);
- png_bytep outrow = first_row + y * step_row;
- png_const_bytep end_row = outrow + width;
-
- /* Read read the libpng data into the temporary buffer. */
- png_read_row(png_ptr, inrow, NULL);
-
- /* Now process the row according to the processing option, note
- * that the caller verifies that the format of the libpng output
- * data is as required.
- */
- outrow += startx;
- switch (proc)
- {
- case PNG_CMAP_GA:
- for (; outrow < end_row; outrow += stepx)
- {
- /* The data is always in the PNG order */
- unsigned int gray = *inrow++;
- unsigned int alpha = *inrow++;
- unsigned int entry;
-
- /* NOTE: this code is copied as a comment in
- * make_ga_colormap above. Please update the
- * comment if you change this code!
- */
- if (alpha > 229) /* opaque */
- {
- entry = (231 * gray + 128) >> 8;
- }
- else if (alpha < 26) /* transparent */
- {
- entry = 231;
- }
- else /* partially opaque */
- {
- entry = 226 + 6 * PNG_DIV51(alpha) + PNG_DIV51(gray);
- }
-
- *outrow = (png_byte)entry;
- }
- break;
-
- case PNG_CMAP_TRANS:
- for (; outrow < end_row; outrow += stepx)
- {
- png_byte gray = *inrow++;
- png_byte alpha = *inrow++;
-
- if (alpha == 0)
- *outrow = PNG_CMAP_TRANS_BACKGROUND;
-
- else if (gray != PNG_CMAP_TRANS_BACKGROUND)
- *outrow = gray;
-
- else
- *outrow = (png_byte)(PNG_CMAP_TRANS_BACKGROUND+1);
- }
- break;
-
- case PNG_CMAP_RGB:
- for (; outrow < end_row; outrow += stepx)
- {
- *outrow = PNG_RGB_INDEX(inrow[0], inrow[1], inrow[2]);
- inrow += 3;
- }
- break;
-
- case PNG_CMAP_RGB_ALPHA:
- for (; outrow < end_row; outrow += stepx)
- {
- unsigned int alpha = inrow[3];
-
- /* Because the alpha entries only hold alpha==0.5 values
- * split the processing at alpha==0.25 (64) and 0.75
- * (196).
- */
-
- if (alpha >= 196)
- *outrow = PNG_RGB_INDEX(inrow[0], inrow[1],
- inrow[2]);
-
- else if (alpha < 64)
- *outrow = PNG_CMAP_RGB_ALPHA_BACKGROUND;
-
- else
- {
- /* Likewise there are three entries for each of r, g
- * and b. We could select the entry by popcount on
- * the top two bits on those architectures that
- * support it, this is what the code below does,
- * crudely.
- */
- unsigned int back_i = PNG_CMAP_RGB_ALPHA_BACKGROUND+1;
-
- /* Here are how the values map:
- *
- * 0x00 .. 0x3f -> 0
- * 0x40 .. 0xbf -> 1
- * 0xc0 .. 0xff -> 2
- *
- * So, as above with the explicit alpha checks, the
- * breakpoints are at 64 and 196.
- */
- if (inrow[0] & 0x80) back_i += 9; /* red */
- if (inrow[0] & 0x40) back_i += 9;
- if (inrow[0] & 0x80) back_i += 3; /* green */
- if (inrow[0] & 0x40) back_i += 3;
- if (inrow[0] & 0x80) back_i += 1; /* blue */
- if (inrow[0] & 0x40) back_i += 1;
-
- *outrow = (png_byte)back_i;
- }
-
- inrow += 4;
- }
- break;
-
- default:
- break;
- }
- }
- }
- }
-
- return 1;
-}
-
-static int
-png_image_read_colormapped(png_voidp argument)
-{
- png_image_read_control *display = png_voidcast(png_image_read_control*,
- argument);
- png_imagep image = display->image;
- png_controlp control = image->opaque;
- png_structrp png_ptr = control->png_ptr;
- png_inforp info_ptr = control->info_ptr;
-
- int passes = 0; /* As a flag */
-
- PNG_SKIP_CHUNKS(png_ptr);
-
- /* Update the 'info' structure and make sure the result is as required; first
- * make sure to turn on the interlace handling if it will be required
- * (because it can't be turned on *after* the call to png_read_update_info!)
- */
- if (display->colormap_processing == PNG_CMAP_NONE)
- passes = png_set_interlace_handling(png_ptr);
-
- png_read_update_info(png_ptr, info_ptr);
-
- /* The expected output can be deduced from the colormap_processing option. */
- switch (display->colormap_processing)
- {
- case PNG_CMAP_NONE:
- /* Output must be one channel and one byte per pixel, the output
- * encoding can be anything.
- */
- if ((info_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
- info_ptr->color_type == PNG_COLOR_TYPE_GRAY) &&
- info_ptr->bit_depth == 8)
- break;
-
- goto bad_output;
-
- case PNG_CMAP_TRANS:
- case PNG_CMAP_GA:
- /* Output must be two channels and the 'G' one must be sRGB, the latter
- * can be checked with an exact number because it should have been set
- * to this number above!
- */
- if (info_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
- info_ptr->bit_depth == 8 &&
- png_ptr->screen_gamma == PNG_GAMMA_sRGB &&
- image->colormap_entries == 256)
- break;
-
- goto bad_output;
-
- case PNG_CMAP_RGB:
- /* Output must be 8-bit sRGB encoded RGB */
- if (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
- info_ptr->bit_depth == 8 &&
- png_ptr->screen_gamma == PNG_GAMMA_sRGB &&
- image->colormap_entries == 216)
- break;
-
- goto bad_output;
-
- case PNG_CMAP_RGB_ALPHA:
- /* Output must be 8-bit sRGB encoded RGBA */
- if (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
- info_ptr->bit_depth == 8 &&
- png_ptr->screen_gamma == PNG_GAMMA_sRGB &&
- image->colormap_entries == 244 /* 216 + 1 + 27 */)
- break;
-
- /* goto bad_output; */
- /* FALL THROUGH */
-
- default:
- bad_output:
- png_error(png_ptr, "bad color-map processing (internal error)");
- }
-
- /* Now read the rows. Do this here if it is possible to read directly into
- * the output buffer, otherwise allocate a local row buffer of the maximum
- * size libpng requires and call the relevant processing routine safely.
- */
- {
- png_voidp first_row = display->buffer;
- ptrdiff_t row_bytes = display->row_stride;
-
- /* The following expression is designed to work correctly whether it gives
- * a signed or an unsigned result.
- */
- if (row_bytes < 0)
- {
- char *ptr = png_voidcast(char*, first_row);
- ptr += (image->height-1) * (-row_bytes);
- first_row = png_voidcast(png_voidp, ptr);
- }
-
- display->first_row = first_row;
- display->row_bytes = row_bytes;
- }
-
- if (passes == 0)
- {
- int result;
- png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr));
-
- display->local_row = row;
- result = png_safe_execute(image, png_image_read_and_map, display);
- display->local_row = NULL;
- png_free(png_ptr, row);
-
- return result;
- }
-
- else
- {
- png_alloc_size_t row_bytes = display->row_bytes;
-
- while (--passes >= 0)
- {
- png_uint_32 y = image->height;
- png_bytep row = png_voidcast(png_bytep, display->first_row);
-
- while (y-- > 0)
- {
- png_read_row(png_ptr, row, NULL);
- row += row_bytes;
- }
- }
-
- return 1;
- }
-}
-
-/* Just the row reading part of png_image_read. */
-static int
-png_image_read_composite(png_voidp argument)
-{
- png_image_read_control *display = png_voidcast(png_image_read_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
- int passes;
-
- switch (png_ptr->interlaced)
- {
- case PNG_INTERLACE_NONE:
- passes = 1;
- break;
-
- case PNG_INTERLACE_ADAM7:
- passes = PNG_INTERLACE_ADAM7_PASSES;
- break;
-
- default:
- passes = 0;
- png_error(png_ptr, "unknown interlace type");
- }
-
- {
- png_uint_32 height = image->height;
- png_uint_32 width = image->width;
- ptrdiff_t step_row = display->row_bytes;
- unsigned int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
- int pass;
-
- for (pass = 0; pass < passes; ++pass)
- {
- unsigned int startx, stepx, stepy;
- png_uint_32 y;
-
- if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
- {
- /* The row may be empty for a short image: */
- if (PNG_PASS_COLS(width, pass) == 0)
- continue;
-
- startx = PNG_PASS_START_COL(pass) * channels;
- stepx = PNG_PASS_COL_OFFSET(pass) * channels;
- y = PNG_PASS_START_ROW(pass);
- stepy = PNG_PASS_ROW_OFFSET(pass);
- }
-
- else
- {
- y = 0;
- startx = 0;
- stepx = channels;
- stepy = 1;
- }
-
- for (; y<height; y += stepy)
- {
- png_bytep inrow = png_voidcast(png_bytep, display->local_row);
- png_bytep outrow;
- png_const_bytep end_row;
-
- /* Read the row, which is packed: */
- png_read_row(png_ptr, inrow, NULL);
-
- outrow = png_voidcast(png_bytep, display->first_row);
- outrow += y * step_row;
- end_row = outrow + width * channels;
-
- /* Now do the composition on each pixel in this row. */
- outrow += startx;
- for (; outrow < end_row; outrow += stepx)
- {
- png_byte alpha = inrow[channels];
-
- if (alpha > 0) /* else no change to the output */
- {
- unsigned int c;
-
- for (c=0; c<channels; ++c)
- {
- png_uint_32 component = inrow[c];
-
- if (alpha < 255) /* else just use component */
- {
- /* This is PNG_OPTIMIZED_ALPHA, the component value
- * is a linear 8-bit value. Combine this with the
- * current outrow[c] value which is sRGB encoded.
- * Arithmetic here is 16-bits to preserve the output
- * values correctly.
- */
- component *= 257*255; /* =65535 */
- component += (255-alpha)*png_sRGB_table[outrow[c]];
-
- /* So 'component' is scaled by 255*65535 and is
- * therefore appropriate for the sRGB to linear
- * conversion table.
- */
- component = PNG_sRGB_FROM_LINEAR(component);
- }
-
- outrow[c] = (png_byte)component;
- }
- }
-
- inrow += channels+1; /* components and alpha channel */
- }
- }
- }
- }
-
- return 1;
-}
-
-/* The do_local_background case; called when all the following transforms are to
- * be done:
- *
- * PNG_RGB_TO_GRAY
- * PNG_COMPOSITE
- * PNG_GAMMA
- *
- * This is a work-round for the fact that both the PNG_RGB_TO_GRAY and
- * PNG_COMPOSITE code performs gamma correction, so we get double gamma
- * correction. The fix-up is to prevent the PNG_COMPOSITE operation happening
- * inside libpng, so this routine sees an 8 or 16-bit gray+alpha row and handles
- * the removal or pre-multiplication of the alpha channel.
- */
-static int
-png_image_read_background(png_voidp argument)
-{
- png_image_read_control *display = png_voidcast(png_image_read_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
- png_inforp info_ptr = image->opaque->info_ptr;
- png_uint_32 height = image->height;
- png_uint_32 width = image->width;
- int pass, passes;
-
- /* Double check the convoluted logic below. We expect to get here with
- * libpng doing rgb to gray and gamma correction but background processing
- * left to the png_image_read_background function. The rows libpng produce
- * might be 8 or 16-bit but should always have two channels; gray plus alpha.
- */
- if ((png_ptr->transformations & PNG_RGB_TO_GRAY) == 0)
- png_error(png_ptr, "lost rgb to gray");
-
- if ((png_ptr->transformations & PNG_COMPOSE) != 0)
- png_error(png_ptr, "unexpected compose");
-
- if (png_get_channels(png_ptr, info_ptr) != 2)
- png_error(png_ptr, "lost/gained channels");
-
- /* Expect the 8-bit case to always remove the alpha channel */
- if ((image->format & PNG_FORMAT_FLAG_LINEAR) == 0 &&
- (image->format & PNG_FORMAT_FLAG_ALPHA) != 0)
- png_error(png_ptr, "unexpected 8-bit transformation");
-
- switch (png_ptr->interlaced)
- {
- case PNG_INTERLACE_NONE:
- passes = 1;
- break;
-
- case PNG_INTERLACE_ADAM7:
- passes = PNG_INTERLACE_ADAM7_PASSES;
- break;
-
- default:
- passes = 0;
- png_error(png_ptr, "unknown interlace type");
- }
-
- switch (png_get_bit_depth(png_ptr, info_ptr))
- {
- default:
- png_error(png_ptr, "unexpected bit depth");
- break;
-
- case 8:
- /* 8-bit sRGB gray values with an alpha channel; the alpha channel is
- * to be removed by composing on a backgroundi: either the row if
- * display->background is NULL or display->background->green if not.
- * Unlike the code above ALPHA_OPTIMIZED has *not* been done.
- */
- {
- png_bytep first_row = png_voidcast(png_bytep, display->first_row);
- ptrdiff_t step_row = display->row_bytes;
-
- for (pass = 0; pass < passes; ++pass)
- {
- png_bytep row = png_voidcast(png_bytep,
- display->first_row);
- unsigned int startx, stepx, stepy;
- png_uint_32 y;
-
- if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
- {
- /* The row may be empty for a short image: */
- if (PNG_PASS_COLS(width, pass) == 0)
- continue;
-
- startx = PNG_PASS_START_COL(pass);
- stepx = PNG_PASS_COL_OFFSET(pass);
- y = PNG_PASS_START_ROW(pass);
- stepy = PNG_PASS_ROW_OFFSET(pass);
- }
-
- else
- {
- y = 0;
- startx = 0;
- stepx = stepy = 1;
- }
-
- if (display->background == NULL)
- {
- for (; y<height; y += stepy)
- {
- png_bytep inrow = png_voidcast(png_bytep,
- display->local_row);
- png_bytep outrow = first_row + y * step_row;
- png_const_bytep end_row = outrow + width;
-
- /* Read the row, which is packed: */
- png_read_row(png_ptr, inrow, NULL);
-
- /* Now do the composition on each pixel in this row. */
- outrow += startx;
- for (; outrow < end_row; outrow += stepx)
- {
- png_byte alpha = inrow[1];
-
- if (alpha > 0) /* else no change to the output */
- {
- png_uint_32 component = inrow[0];
-
- if (alpha < 255) /* else just use component */
- {
- /* Since PNG_OPTIMIZED_ALPHA was not set it is
- * necessary to invert the sRGB transfer
- * function and multiply the alpha out.
- */
- component = png_sRGB_table[component] * alpha;
- component += png_sRGB_table[outrow[0]] *
- (255-alpha);
- component = PNG_sRGB_FROM_LINEAR(component);
- }
-
- outrow[0] = (png_byte)component;
- }
-
- inrow += 2; /* gray and alpha channel */
- }
- }
- }
-
- else /* constant background value */
- {
- png_byte background8 = display->background->green;
- png_uint_16 background = png_sRGB_table[background8];
-
- for (; y<height; y += stepy)
- {
- png_bytep inrow = png_voidcast(png_bytep,
- display->local_row);
- png_bytep outrow = first_row + y * step_row;
- png_const_bytep end_row = outrow + width;
-
- /* Read the row, which is packed: */
- png_read_row(png_ptr, inrow, NULL);
-
- /* Now do the composition on each pixel in this row. */
- outrow += startx;
- for (; outrow < end_row; outrow += stepx)
- {
- png_byte alpha = inrow[1];
-
- if (alpha > 0) /* else use background */
- {
- png_uint_32 component = inrow[0];
-
- if (alpha < 255) /* else just use component */
- {
- component = png_sRGB_table[component] * alpha;
- component += background * (255-alpha);
- component = PNG_sRGB_FROM_LINEAR(component);
- }
-
- outrow[0] = (png_byte)component;
- }
-
- else
- outrow[0] = background8;
-
- inrow += 2; /* gray and alpha channel */
- }
-
- row += display->row_bytes;
- }
- }
- }
- }
- break;
-
- case 16:
- /* 16-bit linear with pre-multiplied alpha; the pre-multiplication must
- * still be done and, maybe, the alpha channel removed. This code also
- * handles the alpha-first option.
- */
- {
- png_uint_16p first_row = png_voidcast(png_uint_16p,
- display->first_row);
- /* The division by two is safe because the caller passed in a
- * stride which was multiplied by 2 (below) to get row_bytes.
- */
- ptrdiff_t step_row = display->row_bytes / 2;
- int preserve_alpha = (image->format & PNG_FORMAT_FLAG_ALPHA) != 0;
- unsigned int outchannels = 1+preserve_alpha;
- int swap_alpha = 0;
-
- if (preserve_alpha && (image->format & PNG_FORMAT_FLAG_AFIRST))
- swap_alpha = 1;
-
- for (pass = 0; pass < passes; ++pass)
- {
- unsigned int startx, stepx, stepy;
- png_uint_32 y;
-
- /* The 'x' start and step are adjusted to output components here.
- */
- if (png_ptr->interlaced == PNG_INTERLACE_ADAM7)
- {
- /* The row may be empty for a short image: */
- if (PNG_PASS_COLS(width, pass) == 0)
- continue;
-
- startx = PNG_PASS_START_COL(pass) * outchannels;
- stepx = PNG_PASS_COL_OFFSET(pass) * outchannels;
- y = PNG_PASS_START_ROW(pass);
- stepy = PNG_PASS_ROW_OFFSET(pass);
- }
-
- else
- {
- y = 0;
- startx = 0;
- stepx = outchannels;
- stepy = 1;
- }
-
- for (; y<height; y += stepy)
- {
- png_const_uint_16p inrow;
- png_uint_16p outrow = first_row + y*step_row;
- png_uint_16p end_row = outrow + width * outchannels;
-
- /* Read the row, which is packed: */
- png_read_row(png_ptr, png_voidcast(png_bytep,
- display->local_row), NULL);
- inrow = png_voidcast(png_const_uint_16p, display->local_row);
-
- /* Now do the pre-multiplication on each pixel in this row.
- */
- outrow += startx;
- for (; outrow < end_row; outrow += stepx)
- {
- png_uint_32 component = inrow[0];
- png_uint_16 alpha = inrow[1];
-
- if (alpha > 0) /* else 0 */
- {
- if (alpha < 65535) /* else just use component */
- {
- component *= alpha;
- component += 32767;
- component /= 65535;
- }
- }
-
- else
- component = 0;
-
- outrow[swap_alpha] = (png_uint_16)component;
- if (preserve_alpha)
- outrow[1 ^ swap_alpha] = alpha;
-
- inrow += 2; /* components and alpha channel */
- }
- }
- }
- }
- break;
- }
-
- return 1;
-}
-
-/* The guts of png_image_finish_read as a png_safe_execute callback. */
-static int
-png_image_read_direct(png_voidp argument)
-{
- png_image_read_control *display = png_voidcast(png_image_read_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
- png_inforp info_ptr = image->opaque->info_ptr;
-
- png_uint_32 format = image->format;
- int linear = (format & PNG_FORMAT_FLAG_LINEAR) != 0;
- int do_local_compose = 0;
- int do_local_background = 0; /* to avoid double gamma correction bug */
- int passes = 0;
-
- /* Add transforms to ensure the correct output format is produced then check
- * that the required implementation support is there. Always expand; always
- * need 8 bits minimum, no palette and expanded tRNS.
- */
- png_set_expand(png_ptr);
-
- /* Now check the format to see if it was modified. */
- {
- png_uint_32 base_format = png_image_format(png_ptr) &
- ~PNG_FORMAT_FLAG_COLORMAP /* removed by png_set_expand */;
- png_uint_32 change = format ^ base_format;
- png_fixed_point output_gamma;
- int mode; /* alpha mode */
-
- /* Do this first so that we have a record if rgb to gray is happening. */
- if (change & PNG_FORMAT_FLAG_COLOR)
- {
- /* gray<->color transformation required. */
- if (format & PNG_FORMAT_FLAG_COLOR)
- png_set_gray_to_rgb(png_ptr);
-
- else
- {
- /* libpng can't do both rgb to gray and
- * background/pre-multiplication if there is also significant gamma
- * correction, because both operations require linear colors and
- * the code only supports one transform doing the gamma correction.
- * Handle this by doing the pre-multiplication or background
- * operation in this code, if necessary.
- *
- * TODO: fix this by rewriting pngrtran.c (!)
- *
- * For the moment (given that fixing this in pngrtran.c is an
- * enormous change) 'do_local_background' is used to indicate that
- * the problem exists.
- */
- if (base_format & PNG_FORMAT_FLAG_ALPHA)
- do_local_background = 1/*maybe*/;
-
- png_set_rgb_to_gray_fixed(png_ptr, PNG_ERROR_ACTION_NONE,
- PNG_RGB_TO_GRAY_DEFAULT, PNG_RGB_TO_GRAY_DEFAULT);
- }
-
- change &= ~PNG_FORMAT_FLAG_COLOR;
- }
-
- /* Set the gamma appropriately, linear for 16-bit input, sRGB otherwise.
- */
- {
- png_fixed_point input_gamma_default;
-
- if ((base_format & PNG_FORMAT_FLAG_LINEAR) &&
- (image->flags & PNG_IMAGE_FLAG_16BIT_sRGB) == 0)
- input_gamma_default = PNG_GAMMA_LINEAR;
- else
- input_gamma_default = PNG_DEFAULT_sRGB;
-
- /* Call png_set_alpha_mode to set the default for the input gamma; the
- * output gamma is set by a second call below.
- */
- png_set_alpha_mode_fixed(png_ptr, PNG_ALPHA_PNG, input_gamma_default);
- }
-
- if (linear)
- {
- /* If there *is* an alpha channel in the input it must be multiplied
- * out; use PNG_ALPHA_STANDARD, otherwise just use PNG_ALPHA_PNG.
- */
- if (base_format & PNG_FORMAT_FLAG_ALPHA)
- mode = PNG_ALPHA_STANDARD; /* associated alpha */
-
- else
- mode = PNG_ALPHA_PNG;
-
- output_gamma = PNG_GAMMA_LINEAR;
- }
-
- else
- {
- mode = PNG_ALPHA_PNG;
- output_gamma = PNG_DEFAULT_sRGB;
- }
-
- /* If 'do_local_background' is set check for the presence of gamma
- * correction; this is part of the work-round for the libpng bug
- * described above.
- *
- * TODO: fix libpng and remove this.
- */
- if (do_local_background)
- {
- png_fixed_point gtest;
-
- /* This is 'png_gamma_threshold' from pngrtran.c; the test used for
- * gamma correction, the screen gamma hasn't been set on png_struct
- * yet; it's set below. png_struct::gamma, however, is set to the
- * final value.
- */
- if (png_muldiv(>est, output_gamma, png_ptr->colorspace.gamma,
- PNG_FP_1) && !png_gamma_significant(gtest))
- do_local_background = 0;
-
- else if (mode == PNG_ALPHA_STANDARD)
- {
- do_local_background = 2/*required*/;
- mode = PNG_ALPHA_PNG; /* prevent libpng doing it */
- }
-
- /* else leave as 1 for the checks below */
- }
-
- /* If the bit-depth changes then handle that here. */
- if (change & PNG_FORMAT_FLAG_LINEAR)
- {
- if (linear /*16-bit output*/)
- png_set_expand_16(png_ptr);
-
- else /* 8-bit output */
- png_set_scale_16(png_ptr);
-
- change &= ~PNG_FORMAT_FLAG_LINEAR;
- }
-
- /* Now the background/alpha channel changes. */
- if (change & PNG_FORMAT_FLAG_ALPHA)
- {
- /* Removing an alpha channel requires composition for the 8-bit
- * formats; for the 16-bit it is already done, above, by the
- * pre-multiplication and the channel just needs to be stripped.
- */
- if (base_format & PNG_FORMAT_FLAG_ALPHA)
- {
- /* If RGB->gray is happening the alpha channel must be left and the
- * operation completed locally.
- *
- * TODO: fix libpng and remove this.
- */
- if (do_local_background)
- do_local_background = 2/*required*/;
-
- /* 16-bit output: just remove the channel */
- else if (linear) /* compose on black (well, pre-multiply) */
- png_set_strip_alpha(png_ptr);
-
- /* 8-bit output: do an appropriate compose */
- else if (display->background != NULL)
- {
- png_color_16 c;
-
- c.index = 0; /*unused*/
- c.red = display->background->red;
- c.green = display->background->green;
- c.blue = display->background->blue;
- c.gray = display->background->green;
-
- /* This is always an 8-bit sRGB value, using the 'green' channel
- * for gray is much better than calculating the luminance here;
- * we can get off-by-one errors in that calculation relative to
- * the app expectations and that will show up in transparent
- * pixels.
- */
- png_set_background_fixed(png_ptr, &c,
- PNG_BACKGROUND_GAMMA_SCREEN, 0/*need_expand*/,
- 0/*gamma: not used*/);
- }
-
- else /* compose on row: implemented below. */
- {
- do_local_compose = 1;
- /* This leaves the alpha channel in the output, so it has to be
- * removed by the code below. Set the encoding to the 'OPTIMIZE'
- * one so the code only has to hack on the pixels that require
- * composition.
- */
- mode = PNG_ALPHA_OPTIMIZED;
- }
- }
-
- else /* output needs an alpha channel */
- {
- /* This is tricky because it happens before the swap operation has
- * been accomplished; however, the swap does *not* swap the added
- * alpha channel (weird API), so it must be added in the correct
- * place.
- */
- png_uint_32 filler; /* opaque filler */
- int where;
-
- if (linear)
- filler = 65535;
-
- else
- filler = 255;
-
-# ifdef PNG_FORMAT_AFIRST_SUPPORTED
- if (format & PNG_FORMAT_FLAG_AFIRST)
- {
- where = PNG_FILLER_BEFORE;
- change &= ~PNG_FORMAT_FLAG_AFIRST;
- }
-
- else
-# endif
- where = PNG_FILLER_AFTER;
-
- png_set_add_alpha(png_ptr, filler, where);
- }
-
- /* This stops the (irrelevant) call to swap_alpha below. */
- change &= ~PNG_FORMAT_FLAG_ALPHA;
- }
-
- /* Now set the alpha mode correctly; this is always done, even if there is
- * no alpha channel in either the input or the output because it correctly
- * sets the output gamma.
- */
- png_set_alpha_mode_fixed(png_ptr, mode, output_gamma);
-
-# ifdef PNG_FORMAT_BGR_SUPPORTED
- if (change & PNG_FORMAT_FLAG_BGR)
- {
- /* Check only the output format; PNG is never BGR; don't do this if
- * the output is gray, but fix up the 'format' value in that case.
- */
- if (format & PNG_FORMAT_FLAG_COLOR)
- png_set_bgr(png_ptr);
-
- else
- format &= ~PNG_FORMAT_FLAG_BGR;
-
- change &= ~PNG_FORMAT_FLAG_BGR;
- }
-# endif
-
-# ifdef PNG_FORMAT_AFIRST_SUPPORTED
- if (change & PNG_FORMAT_FLAG_AFIRST)
- {
- /* Only relevant if there is an alpha channel - it's particularly
- * important to handle this correctly because do_local_compose may
- * be set above and then libpng will keep the alpha channel for this
- * code to remove.
- */
- if (format & PNG_FORMAT_FLAG_ALPHA)
- {
- /* Disable this if doing a local background,
- * TODO: remove this when local background is no longer required.
- */
- if (do_local_background != 2)
- png_set_swap_alpha(png_ptr);
- }
-
- else
- format &= ~PNG_FORMAT_FLAG_AFIRST;
-
- change &= ~PNG_FORMAT_FLAG_AFIRST;
- }
-# endif
-
- /* If the *output* is 16-bit then we need to check for a byte-swap on this
- * architecture.
- */
- if (linear)
- {
- PNG_CONST png_uint_16 le = 0x0001;
-
- if (*(png_const_bytep)&le)
- png_set_swap(png_ptr);
- }
-
- /* If change is not now 0 some transformation is missing - error out. */
- if (change)
- png_error(png_ptr, "png_read_image: unsupported transformation");
- }
-
- PNG_SKIP_CHUNKS(png_ptr);
-
- /* Update the 'info' structure and make sure the result is as required; first
- * make sure to turn on the interlace handling if it will be required
- * (because it can't be turned on *after* the call to png_read_update_info!)
- *
- * TODO: remove the do_local_background fixup below.
- */
- if (!do_local_compose && do_local_background != 2)
- passes = png_set_interlace_handling(png_ptr);
-
- png_read_update_info(png_ptr, info_ptr);
-
- {
- png_uint_32 info_format = 0;
-
- if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
- info_format |= PNG_FORMAT_FLAG_COLOR;
-
- if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
- {
- /* do_local_compose removes this channel below. */
- if (!do_local_compose)
- {
- /* do_local_background does the same if required. */
- if (do_local_background != 2 ||
- (format & PNG_FORMAT_FLAG_ALPHA) != 0)
- info_format |= PNG_FORMAT_FLAG_ALPHA;
- }
- }
-
- else if (do_local_compose) /* internal error */
- png_error(png_ptr, "png_image_read: alpha channel lost");
-
- if (info_ptr->bit_depth == 16)
- info_format |= PNG_FORMAT_FLAG_LINEAR;
-
-# ifdef PNG_FORMAT_BGR_SUPPORTED
- if (png_ptr->transformations & PNG_BGR)
- info_format |= PNG_FORMAT_FLAG_BGR;
-# endif
-
-# ifdef PNG_FORMAT_AFIRST_SUPPORTED
- if (do_local_background == 2)
- {
- if (format & PNG_FORMAT_FLAG_AFIRST)
- info_format |= PNG_FORMAT_FLAG_AFIRST;
- }
-
- if ((png_ptr->transformations & PNG_SWAP_ALPHA) != 0 ||
- ((png_ptr->transformations & PNG_ADD_ALPHA) != 0 &&
- (png_ptr->flags & PNG_FLAG_FILLER_AFTER) == 0))
- {
- if (do_local_background == 2)
- png_error(png_ptr, "unexpected alpha swap transformation");
-
- info_format |= PNG_FORMAT_FLAG_AFIRST;
- }
-# endif
-
- /* This is actually an internal error. */
- if (info_format != format)
- png_error(png_ptr, "png_read_image: invalid transformations");
- }
-
- /* Now read the rows. If do_local_compose is set then it is necessary to use
- * a local row buffer. The output will be GA, RGBA or BGRA and must be
- * converted to G, RGB or BGR as appropriate. The 'local_row' member of the
- * display acts as a flag.
- */
- {
- png_voidp first_row = display->buffer;
- ptrdiff_t row_bytes = display->row_stride;
-
- if (linear)
- row_bytes *= 2;
-
- /* The following expression is designed to work correctly whether it gives
- * a signed or an unsigned result.
- */
- if (row_bytes < 0)
- {
- char *ptr = png_voidcast(char*, first_row);
- ptr += (image->height-1) * (-row_bytes);
- first_row = png_voidcast(png_voidp, ptr);
- }
-
- display->first_row = first_row;
- display->row_bytes = row_bytes;
- }
-
- if (do_local_compose)
- {
- int result;
- png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr));
-
- display->local_row = row;
- result = png_safe_execute(image, png_image_read_composite, display);
- display->local_row = NULL;
- png_free(png_ptr, row);
-
- return result;
- }
-
- else if (do_local_background == 2)
- {
- int result;
- png_voidp row = png_malloc(png_ptr, png_get_rowbytes(png_ptr, info_ptr));
-
- display->local_row = row;
- result = png_safe_execute(image, png_image_read_background, display);
- display->local_row = NULL;
- png_free(png_ptr, row);
-
- return result;
- }
-
- else
- {
- png_alloc_size_t row_bytes = display->row_bytes;
-
- while (--passes >= 0)
- {
- png_uint_32 y = image->height;
- png_bytep row = png_voidcast(png_bytep, display->first_row);
-
- while (y-- > 0)
- {
- png_read_row(png_ptr, row, NULL);
- row += row_bytes;
- }
- }
-
- return 1;
- }
-}
-
-int PNGAPI
-png_image_finish_read(png_imagep image, png_const_colorp background,
- void *buffer, png_int_32 row_stride, void *colormap)
-{
- if (image != NULL && image->version == PNG_IMAGE_VERSION)
- {
- png_uint_32 check;
-
- if (row_stride == 0)
- row_stride = PNG_IMAGE_ROW_STRIDE(*image);
-
- if (row_stride < 0)
- check = -row_stride;
-
- else
- check = row_stride;
-
- if (image->opaque != NULL && buffer != NULL &&
- check >= PNG_IMAGE_ROW_STRIDE(*image))
- {
- if ((image->format & PNG_FORMAT_FLAG_COLORMAP) == 0 ||
- (image->colormap_entries > 0 && colormap != NULL))
- {
- int result;
- png_image_read_control display;
-
- memset(&display, 0, (sizeof display));
- display.image = image;
- display.buffer = buffer;
- display.row_stride = row_stride;
- display.colormap = colormap;
- display.background = background;
- display.local_row = NULL;
-
- /* Choose the correct 'end' routine; for the color-map case all the
- * setup has already been done.
- */
- if (image->format & PNG_FORMAT_FLAG_COLORMAP)
- result =
- png_safe_execute(image, png_image_read_colormap, &display) &&
- png_safe_execute(image, png_image_read_colormapped, &display);
-
- else
- result =
- png_safe_execute(image, png_image_read_direct, &display);
-
- png_image_free(image);
- return result;
- }
-
- else
- return png_image_error(image,
- "png_image_finish_read[color-map]: no color-map");
- }
-
- else
- return png_image_error(image,
- "png_image_finish_read: invalid argument");
- }
-
- else if (image != NULL)
- return png_image_error(image,
- "png_image_finish_read: damaged PNG_IMAGE_VERSION");
-
- return 0;
-}
-
-#endif /* PNG_SIMPLIFIED_READ_SUPPORTED */
-#endif /* PNG_READ_SUPPORTED */
+++ /dev/null
-
-/* pngrio.c - functions for data input
- *
- * Last changed in libpng 1.6.0 [February 14, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file provides a location for all input. Users who need
- * special handling are expected to write a function that has the same
- * arguments as this and performs a similar function, but that possibly
- * has a different input method. Note that you shouldn't change this
- * function, but rather write a replacement function and then make
- * libpng use it at run time with png_set_read_fn(...).
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_READ_SUPPORTED
-
-/* Read the data from whatever input you are using. The default routine
- * reads from a file pointer. Note that this routine sometimes gets called
- * with very small lengths, so you should implement some kind of simple
- * buffering if you are using unbuffered reads. This should never be asked
- * to read more then 64K on a 16 bit machine.
- */
-void /* PRIVATE */
-png_read_data(png_structrp png_ptr, png_bytep data, png_size_t length)
-{
- png_debug1(4, "reading %d bytes", (int)length);
-
- if (png_ptr->read_data_fn != NULL)
- (*(png_ptr->read_data_fn))(png_ptr, data, length);
-
- else
- png_error(png_ptr, "Call to NULL read function");
-}
-
-#ifdef PNG_STDIO_SUPPORTED
-/* This is the function that does the actual reading of data. If you are
- * not reading from a standard C stream, you should create a replacement
- * read_data function and use it at run time with png_set_read_fn(), rather
- * than changing the library.
- */
-void PNGCBAPI
-png_default_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
-{
- png_size_t check;
-
- if (png_ptr == NULL)
- return;
-
- /* fread() returns 0 on error, so it is OK to store this in a png_size_t
- * instead of an int, which is what fread() actually returns.
- */
- check = fread(data, 1, length, png_voidcast(png_FILE_p, png_ptr->io_ptr));
-
- if (check != length)
- png_error(png_ptr, "Read Error");
-}
-#endif
-
-/* This function allows the application to supply a new input function
- * for libpng if standard C streams aren't being used.
- *
- * This function takes as its arguments:
- *
- * png_ptr - pointer to a png input data structure
- *
- * io_ptr - pointer to user supplied structure containing info about
- * the input functions. May be NULL.
- *
- * read_data_fn - pointer to a new input function that takes as its
- * arguments a pointer to a png_struct, a pointer to
- * a location where input data can be stored, and a 32-bit
- * unsigned int that is the number of bytes to be read.
- * To exit and output any fatal error messages the new write
- * function should call png_error(png_ptr, "Error msg").
- * May be NULL, in which case libpng's default function will
- * be used.
- */
-void PNGAPI
-png_set_read_fn(png_structrp png_ptr, png_voidp io_ptr,
- png_rw_ptr read_data_fn)
-{
- if (png_ptr == NULL)
- return;
-
- png_ptr->io_ptr = io_ptr;
-
-#ifdef PNG_STDIO_SUPPORTED
- if (read_data_fn != NULL)
- png_ptr->read_data_fn = read_data_fn;
-
- else
- png_ptr->read_data_fn = png_default_read_data;
-#else
- png_ptr->read_data_fn = read_data_fn;
-#endif
-
- /* It is an error to write to a read device */
- if (png_ptr->write_data_fn != NULL)
- {
- png_ptr->write_data_fn = NULL;
- png_warning(png_ptr,
- "Can't set both read_data_fn and write_data_fn in the"
- " same structure");
- }
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
- png_ptr->output_flush_fn = NULL;
-#endif
-}
-#endif /* PNG_READ_SUPPORTED */
+++ /dev/null
-
-/* pngrtran.c - transforms the data in a row for PNG readers
- *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file contains functions optionally called by an application
- * in order to tell libpng how to handle data when reading a PNG.
- * Transformations that are used in both reading and writing are
- * in pngtrans.c.
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_READ_SUPPORTED
-
-/* Set the action on getting a CRC error for an ancillary or critical chunk. */
-void PNGAPI
-png_set_crc_action(png_structrp png_ptr, int crit_action, int ancil_action)
-{
- png_debug(1, "in png_set_crc_action");
-
- if (png_ptr == NULL)
- return;
-
- /* Tell libpng how we react to CRC errors in critical chunks */
- switch (crit_action)
- {
- case PNG_CRC_NO_CHANGE: /* Leave setting as is */
- break;
-
- case PNG_CRC_WARN_USE: /* Warn/use data */
- png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
- png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE;
- break;
-
- case PNG_CRC_QUIET_USE: /* Quiet/use data */
- png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
- png_ptr->flags |= PNG_FLAG_CRC_CRITICAL_USE |
- PNG_FLAG_CRC_CRITICAL_IGNORE;
- break;
-
- case PNG_CRC_WARN_DISCARD: /* Not a valid action for critical data */
- png_warning(png_ptr,
- "Can't discard critical data on CRC error");
- case PNG_CRC_ERROR_QUIT: /* Error/quit */
-
- case PNG_CRC_DEFAULT:
- default:
- png_ptr->flags &= ~PNG_FLAG_CRC_CRITICAL_MASK;
- break;
- }
-
- /* Tell libpng how we react to CRC errors in ancillary chunks */
- switch (ancil_action)
- {
- case PNG_CRC_NO_CHANGE: /* Leave setting as is */
- break;
-
- case PNG_CRC_WARN_USE: /* Warn/use data */
- png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
- png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE;
- break;
-
- case PNG_CRC_QUIET_USE: /* Quiet/use data */
- png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
- png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_USE |
- PNG_FLAG_CRC_ANCILLARY_NOWARN;
- break;
-
- case PNG_CRC_ERROR_QUIT: /* Error/quit */
- png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
- png_ptr->flags |= PNG_FLAG_CRC_ANCILLARY_NOWARN;
- break;
-
- case PNG_CRC_WARN_DISCARD: /* Warn/discard data */
-
- case PNG_CRC_DEFAULT:
- default:
- png_ptr->flags &= ~PNG_FLAG_CRC_ANCILLARY_MASK;
- break;
- }
-}
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-/* Is it OK to set a transformation now? Only if png_start_read_image or
- * png_read_update_info have not been called. It is not necessary for the IHDR
- * to have been read in all cases, the parameter allows for this check too.
- */
-static int
-png_rtran_ok(png_structrp png_ptr, int need_IHDR)
-{
- if (png_ptr != NULL)
- {
- if (png_ptr->flags & PNG_FLAG_ROW_INIT)
- png_app_error(png_ptr,
- "invalid after png_start_read_image or png_read_update_info");
-
- else if (need_IHDR && (png_ptr->mode & PNG_HAVE_IHDR) == 0)
- png_app_error(png_ptr, "invalid before the PNG header has been read");
-
- else
- {
- /* Turn on failure to initialize correctly for all transforms. */
- png_ptr->flags |= PNG_FLAG_DETECT_UNINITIALIZED;
-
- return 1; /* Ok */
- }
- }
-
- return 0; /* no png_error possible! */
-}
-#endif
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
-/* Handle alpha and tRNS via a background color */
-void PNGFAPI
-png_set_background_fixed(png_structrp png_ptr,
- png_const_color_16p background_color, int background_gamma_code,
- int need_expand, png_fixed_point background_gamma)
-{
- png_debug(1, "in png_set_background_fixed");
-
- if (!png_rtran_ok(png_ptr, 0) || background_color == NULL)
- return;
-
- if (background_gamma_code == PNG_BACKGROUND_GAMMA_UNKNOWN)
- {
- png_warning(png_ptr, "Application must supply a known background gamma");
- return;
- }
-
- png_ptr->transformations |= PNG_COMPOSE | PNG_STRIP_ALPHA;
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
-
- png_ptr->background = *background_color;
- png_ptr->background_gamma = background_gamma;
- png_ptr->background_gamma_type = (png_byte)(background_gamma_code);
- if (need_expand)
- png_ptr->transformations |= PNG_BACKGROUND_EXPAND;
- else
- png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_background(png_structrp png_ptr,
- png_const_color_16p background_color, int background_gamma_code,
- int need_expand, double background_gamma)
-{
- png_set_background_fixed(png_ptr, background_color, background_gamma_code,
- need_expand, png_fixed(png_ptr, background_gamma, "png_set_background"));
-}
-# endif /* FLOATING_POINT */
-#endif /* READ_BACKGROUND */
-
-/* Scale 16-bit depth files to 8-bit depth. If both of these are set then the
- * one that pngrtran does first (scale) happens. This is necessary to allow the
- * TRANSFORM and API behavior to be somewhat consistent, and it's simpler.
- */
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
-void PNGAPI
-png_set_scale_16(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_scale_16");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= PNG_SCALE_16_TO_8;
-}
-#endif
-
-#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
-/* Chop 16-bit depth files to 8-bit depth */
-void PNGAPI
-png_set_strip_16(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_strip_16");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= PNG_16_TO_8;
-}
-#endif
-
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
-void PNGAPI
-png_set_strip_alpha(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_strip_alpha");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= PNG_STRIP_ALPHA;
-}
-#endif
-
-#if defined(PNG_READ_ALPHA_MODE_SUPPORTED) || defined(PNG_READ_GAMMA_SUPPORTED)
-static png_fixed_point
-translate_gamma_flags(png_structrp png_ptr, png_fixed_point output_gamma,
- int is_screen)
-{
- /* Check for flag values. The main reason for having the old Mac value as a
- * flag is that it is pretty near impossible to work out what the correct
- * value is from Apple documentation - a working Mac system is needed to
- * discover the value!
- */
- if (output_gamma == PNG_DEFAULT_sRGB ||
- output_gamma == PNG_FP_1 / PNG_DEFAULT_sRGB)
- {
- /* If there is no sRGB support this just sets the gamma to the standard
- * sRGB value. (This is a side effect of using this function!)
- */
-# ifdef PNG_READ_sRGB_SUPPORTED
- png_ptr->flags |= PNG_FLAG_ASSUME_sRGB;
-# else
- PNG_UNUSED(png_ptr)
-# endif
- if (is_screen)
- output_gamma = PNG_GAMMA_sRGB;
- else
- output_gamma = PNG_GAMMA_sRGB_INVERSE;
- }
-
- else if (output_gamma == PNG_GAMMA_MAC_18 ||
- output_gamma == PNG_FP_1 / PNG_GAMMA_MAC_18)
- {
- if (is_screen)
- output_gamma = PNG_GAMMA_MAC_OLD;
- else
- output_gamma = PNG_GAMMA_MAC_INVERSE;
- }
-
- return output_gamma;
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-static png_fixed_point
-convert_gamma_value(png_structrp png_ptr, double output_gamma)
-{
- /* The following silently ignores cases where fixed point (times 100,000)
- * gamma values are passed to the floating point API. This is safe and it
- * means the fixed point constants work just fine with the floating point
- * API. The alternative would just lead to undetected errors and spurious
- * bug reports. Negative values fail inside the _fixed API unless they
- * correspond to the flag values.
- */
- if (output_gamma > 0 && output_gamma < 128)
- output_gamma *= PNG_FP_1;
-
- /* This preserves -1 and -2 exactly: */
- output_gamma = floor(output_gamma + .5);
-
- if (output_gamma > PNG_FP_MAX || output_gamma < PNG_FP_MIN)
- png_fixed_error(png_ptr, "gamma value");
-
- return (png_fixed_point)output_gamma;
-}
-# endif
-#endif /* READ_ALPHA_MODE || READ_GAMMA */
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
-void PNGFAPI
-png_set_alpha_mode_fixed(png_structrp png_ptr, int mode,
- png_fixed_point output_gamma)
-{
- int compose = 0;
- png_fixed_point file_gamma;
-
- png_debug(1, "in png_set_alpha_mode");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- output_gamma = translate_gamma_flags(png_ptr, output_gamma, 1/*screen*/);
-
- /* Validate the value to ensure it is in a reasonable range. The value
- * is expected to be 1 or greater, but this range test allows for some
- * viewing correction values. The intent is to weed out users of this API
- * who use the inverse of the gamma value accidentally! Since some of these
- * values are reasonable this may have to be changed.
- */
- if (output_gamma < 70000 || output_gamma > 300000)
- png_error(png_ptr, "output gamma out of expected range");
-
- /* The default file gamma is the inverse of the output gamma; the output
- * gamma may be changed below so get the file value first:
- */
- file_gamma = png_reciprocal(output_gamma);
-
- /* There are really 8 possibilities here, composed of any combination
- * of:
- *
- * premultiply the color channels
- * do not encode non-opaque pixels
- * encode the alpha as well as the color channels
- *
- * The differences disappear if the input/output ('screen') gamma is 1.0,
- * because then the encoding is a no-op and there is only the choice of
- * premultiplying the color channels or not.
- *
- * png_set_alpha_mode and png_set_background interact because both use
- * png_compose to do the work. Calling both is only useful when
- * png_set_alpha_mode is used to set the default mode - PNG_ALPHA_PNG - along
- * with a default gamma value. Otherwise PNG_COMPOSE must not be set.
- */
- switch (mode)
- {
- case PNG_ALPHA_PNG: /* default: png standard */
- /* No compose, but it may be set by png_set_background! */
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
- break;
-
- case PNG_ALPHA_ASSOCIATED: /* color channels premultiplied */
- compose = 1;
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
- /* The output is linear: */
- output_gamma = PNG_FP_1;
- break;
-
- case PNG_ALPHA_OPTIMIZED: /* associated, non-opaque pixels linear */
- compose = 1;
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags |= PNG_FLAG_OPTIMIZE_ALPHA;
- /* output_gamma records the encoding of opaque pixels! */
- break;
-
- case PNG_ALPHA_BROKEN: /* associated, non-linear, alpha encoded */
- compose = 1;
- png_ptr->transformations |= PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
- break;
-
- default:
- png_error(png_ptr, "invalid alpha mode");
- }
-
- /* Only set the default gamma if the file gamma has not been set (this has
- * the side effect that the gamma in a second call to png_set_alpha_mode will
- * be ignored.)
- */
- if (png_ptr->colorspace.gamma == 0)
- {
- png_ptr->colorspace.gamma = file_gamma;
- png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
- }
-
- /* But always set the output gamma: */
- png_ptr->screen_gamma = output_gamma;
-
- /* Finally, if pre-multiplying, set the background fields to achieve the
- * desired result.
- */
- if (compose)
- {
- /* And obtain alpha pre-multiplication by composing on black: */
- memset(&png_ptr->background, 0, (sizeof png_ptr->background));
- png_ptr->background_gamma = png_ptr->colorspace.gamma; /* just in case */
- png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_FILE;
- png_ptr->transformations &= ~PNG_BACKGROUND_EXPAND;
-
- if (png_ptr->transformations & PNG_COMPOSE)
- png_error(png_ptr,
- "conflicting calls to set alpha mode and background");
-
- png_ptr->transformations |= PNG_COMPOSE;
- }
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_alpha_mode(png_structrp png_ptr, int mode, double output_gamma)
-{
- png_set_alpha_mode_fixed(png_ptr, mode, convert_gamma_value(png_ptr,
- output_gamma));
-}
-# endif
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* Dither file to 8-bit. Supply a palette, the current number
- * of elements in the palette, the maximum number of elements
- * allowed, and a histogram if possible. If the current number
- * of colors is greater then the maximum number, the palette will be
- * modified to fit in the maximum number. "full_quantize" indicates
- * whether we need a quantizing cube set up for RGB images, or if we
- * simply are reducing the number of colors in a paletted image.
- */
-
-typedef struct png_dsort_struct
-{
- struct png_dsort_struct * next;
- png_byte left;
- png_byte right;
-} png_dsort;
-typedef png_dsort * png_dsortp;
-typedef png_dsort * * png_dsortpp;
-
-void PNGAPI
-png_set_quantize(png_structrp png_ptr, png_colorp palette,
- int num_palette, int maximum_colors, png_const_uint_16p histogram,
- int full_quantize)
-{
- png_debug(1, "in png_set_quantize");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= PNG_QUANTIZE;
-
- if (!full_quantize)
- {
- int i;
-
- png_ptr->quantize_index = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
- for (i = 0; i < num_palette; i++)
- png_ptr->quantize_index[i] = (png_byte)i;
- }
-
- if (num_palette > maximum_colors)
- {
- if (histogram != NULL)
- {
- /* This is easy enough, just throw out the least used colors.
- * Perhaps not the best solution, but good enough.
- */
-
- int i;
-
- /* Initialize an array to sort colors */
- png_ptr->quantize_sort = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
-
- /* Initialize the quantize_sort array */
- for (i = 0; i < num_palette; i++)
- png_ptr->quantize_sort[i] = (png_byte)i;
-
- /* Find the least used palette entries by starting a
- * bubble sort, and running it until we have sorted
- * out enough colors. Note that we don't care about
- * sorting all the colors, just finding which are
- * least used.
- */
-
- for (i = num_palette - 1; i >= maximum_colors; i--)
- {
- int done; /* To stop early if the list is pre-sorted */
- int j;
-
- done = 1;
- for (j = 0; j < i; j++)
- {
- if (histogram[png_ptr->quantize_sort[j]]
- < histogram[png_ptr->quantize_sort[j + 1]])
- {
- png_byte t;
-
- t = png_ptr->quantize_sort[j];
- png_ptr->quantize_sort[j] = png_ptr->quantize_sort[j + 1];
- png_ptr->quantize_sort[j + 1] = t;
- done = 0;
- }
- }
-
- if (done)
- break;
- }
-
- /* Swap the palette around, and set up a table, if necessary */
- if (full_quantize)
- {
- int j = num_palette;
-
- /* Put all the useful colors within the max, but don't
- * move the others.
- */
- for (i = 0; i < maximum_colors; i++)
- {
- if ((int)png_ptr->quantize_sort[i] >= maximum_colors)
- {
- do
- j--;
- while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
-
- palette[i] = palette[j];
- }
- }
- }
- else
- {
- int j = num_palette;
-
- /* Move all the used colors inside the max limit, and
- * develop a translation table.
- */
- for (i = 0; i < maximum_colors; i++)
- {
- /* Only move the colors we need to */
- if ((int)png_ptr->quantize_sort[i] >= maximum_colors)
- {
- png_color tmp_color;
-
- do
- j--;
- while ((int)png_ptr->quantize_sort[j] >= maximum_colors);
-
- tmp_color = palette[j];
- palette[j] = palette[i];
- palette[i] = tmp_color;
- /* Indicate where the color went */
- png_ptr->quantize_index[j] = (png_byte)i;
- png_ptr->quantize_index[i] = (png_byte)j;
- }
- }
-
- /* Find closest color for those colors we are not using */
- for (i = 0; i < num_palette; i++)
- {
- if ((int)png_ptr->quantize_index[i] >= maximum_colors)
- {
- int min_d, k, min_k, d_index;
-
- /* Find the closest color to one we threw out */
- d_index = png_ptr->quantize_index[i];
- min_d = PNG_COLOR_DIST(palette[d_index], palette[0]);
- for (k = 1, min_k = 0; k < maximum_colors; k++)
- {
- int d;
-
- d = PNG_COLOR_DIST(palette[d_index], palette[k]);
-
- if (d < min_d)
- {
- min_d = d;
- min_k = k;
- }
- }
- /* Point to closest color */
- png_ptr->quantize_index[i] = (png_byte)min_k;
- }
- }
- }
- png_free(png_ptr, png_ptr->quantize_sort);
- png_ptr->quantize_sort = NULL;
- }
- else
- {
- /* This is much harder to do simply (and quickly). Perhaps
- * we need to go through a median cut routine, but those
- * don't always behave themselves with only a few colors
- * as input. So we will just find the closest two colors,
- * and throw out one of them (chosen somewhat randomly).
- * [We don't understand this at all, so if someone wants to
- * work on improving it, be our guest - AED, GRP]
- */
- int i;
- int max_d;
- int num_new_palette;
- png_dsortp t;
- png_dsortpp hash;
-
- t = NULL;
-
- /* Initialize palette index arrays */
- png_ptr->index_to_palette = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
- png_ptr->palette_to_index = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)(num_palette * (sizeof (png_byte))));
-
- /* Initialize the sort array */
- for (i = 0; i < num_palette; i++)
- {
- png_ptr->index_to_palette[i] = (png_byte)i;
- png_ptr->palette_to_index[i] = (png_byte)i;
- }
-
- hash = (png_dsortpp)png_calloc(png_ptr, (png_uint_32)(769 *
- (sizeof (png_dsortp))));
-
- num_new_palette = num_palette;
-
- /* Initial wild guess at how far apart the farthest pixel
- * pair we will be eliminating will be. Larger
- * numbers mean more areas will be allocated, Smaller
- * numbers run the risk of not saving enough data, and
- * having to do this all over again.
- *
- * I have not done extensive checking on this number.
- */
- max_d = 96;
-
- while (num_new_palette > maximum_colors)
- {
- for (i = 0; i < num_new_palette - 1; i++)
- {
- int j;
-
- for (j = i + 1; j < num_new_palette; j++)
- {
- int d;
-
- d = PNG_COLOR_DIST(palette[i], palette[j]);
-
- if (d <= max_d)
- {
-
- t = (png_dsortp)png_malloc_warn(png_ptr,
- (png_uint_32)(sizeof (png_dsort)));
-
- if (t == NULL)
- break;
-
- t->next = hash[d];
- t->left = (png_byte)i;
- t->right = (png_byte)j;
- hash[d] = t;
- }
- }
- if (t == NULL)
- break;
- }
-
- if (t != NULL)
- for (i = 0; i <= max_d; i++)
- {
- if (hash[i] != NULL)
- {
- png_dsortp p;
-
- for (p = hash[i]; p; p = p->next)
- {
- if ((int)png_ptr->index_to_palette[p->left]
- < num_new_palette &&
- (int)png_ptr->index_to_palette[p->right]
- < num_new_palette)
- {
- int j, next_j;
-
- if (num_new_palette & 0x01)
- {
- j = p->left;
- next_j = p->right;
- }
- else
- {
- j = p->right;
- next_j = p->left;
- }
-
- num_new_palette--;
- palette[png_ptr->index_to_palette[j]]
- = palette[num_new_palette];
- if (!full_quantize)
- {
- int k;
-
- for (k = 0; k < num_palette; k++)
- {
- if (png_ptr->quantize_index[k] ==
- png_ptr->index_to_palette[j])
- png_ptr->quantize_index[k] =
- png_ptr->index_to_palette[next_j];
-
- if ((int)png_ptr->quantize_index[k] ==
- num_new_palette)
- png_ptr->quantize_index[k] =
- png_ptr->index_to_palette[j];
- }
- }
-
- png_ptr->index_to_palette[png_ptr->palette_to_index
- [num_new_palette]] = png_ptr->index_to_palette[j];
-
- png_ptr->palette_to_index[png_ptr->index_to_palette[j]]
- = png_ptr->palette_to_index[num_new_palette];
-
- png_ptr->index_to_palette[j] =
- (png_byte)num_new_palette;
-
- png_ptr->palette_to_index[num_new_palette] =
- (png_byte)j;
- }
- if (num_new_palette <= maximum_colors)
- break;
- }
- if (num_new_palette <= maximum_colors)
- break;
- }
- }
-
- for (i = 0; i < 769; i++)
- {
- if (hash[i] != NULL)
- {
- png_dsortp p = hash[i];
- while (p)
- {
- t = p->next;
- png_free(png_ptr, p);
- p = t;
- }
- }
- hash[i] = 0;
- }
- max_d += 96;
- }
- png_free(png_ptr, hash);
- png_free(png_ptr, png_ptr->palette_to_index);
- png_free(png_ptr, png_ptr->index_to_palette);
- png_ptr->palette_to_index = NULL;
- png_ptr->index_to_palette = NULL;
- }
- num_palette = maximum_colors;
- }
- if (png_ptr->palette == NULL)
- {
- png_ptr->palette = palette;
- }
- png_ptr->num_palette = (png_uint_16)num_palette;
-
- if (full_quantize)
- {
- int i;
- png_bytep distance;
- int total_bits = PNG_QUANTIZE_RED_BITS + PNG_QUANTIZE_GREEN_BITS +
- PNG_QUANTIZE_BLUE_BITS;
- int num_red = (1 << PNG_QUANTIZE_RED_BITS);
- int num_green = (1 << PNG_QUANTIZE_GREEN_BITS);
- int num_blue = (1 << PNG_QUANTIZE_BLUE_BITS);
- png_size_t num_entries = ((png_size_t)1 << total_bits);
-
- png_ptr->palette_lookup = (png_bytep)png_calloc(png_ptr,
- (png_uint_32)(num_entries * (sizeof (png_byte))));
-
- distance = (png_bytep)png_malloc(png_ptr, (png_uint_32)(num_entries *
- (sizeof (png_byte))));
-
- memset(distance, 0xff, num_entries * (sizeof (png_byte)));
-
- for (i = 0; i < num_palette; i++)
- {
- int ir, ig, ib;
- int r = (palette[i].red >> (8 - PNG_QUANTIZE_RED_BITS));
- int g = (palette[i].green >> (8 - PNG_QUANTIZE_GREEN_BITS));
- int b = (palette[i].blue >> (8 - PNG_QUANTIZE_BLUE_BITS));
-
- for (ir = 0; ir < num_red; ir++)
- {
- /* int dr = abs(ir - r); */
- int dr = ((ir > r) ? ir - r : r - ir);
- int index_r = (ir << (PNG_QUANTIZE_BLUE_BITS +
- PNG_QUANTIZE_GREEN_BITS));
-
- for (ig = 0; ig < num_green; ig++)
- {
- /* int dg = abs(ig - g); */
- int dg = ((ig > g) ? ig - g : g - ig);
- int dt = dr + dg;
- int dm = ((dr > dg) ? dr : dg);
- int index_g = index_r | (ig << PNG_QUANTIZE_BLUE_BITS);
-
- for (ib = 0; ib < num_blue; ib++)
- {
- int d_index = index_g | ib;
- /* int db = abs(ib - b); */
- int db = ((ib > b) ? ib - b : b - ib);
- int dmax = ((dm > db) ? dm : db);
- int d = dmax + dt + db;
-
- if (d < (int)distance[d_index])
- {
- distance[d_index] = (png_byte)d;
- png_ptr->palette_lookup[d_index] = (png_byte)i;
- }
- }
- }
- }
- }
-
- png_free(png_ptr, distance);
- }
-}
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-void PNGFAPI
-png_set_gamma_fixed(png_structrp png_ptr, png_fixed_point scrn_gamma,
- png_fixed_point file_gamma)
-{
- png_debug(1, "in png_set_gamma_fixed");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- /* New in libpng-1.5.4 - reserve particular negative values as flags. */
- scrn_gamma = translate_gamma_flags(png_ptr, scrn_gamma, 1/*screen*/);
- file_gamma = translate_gamma_flags(png_ptr, file_gamma, 0/*file*/);
-
- /* Checking the gamma values for being >0 was added in 1.5.4 along with the
- * premultiplied alpha support; this actually hides an undocumented feature
- * of the previous implementation which allowed gamma processing to be
- * disabled in background handling. There is no evidence (so far) that this
- * was being used; however, png_set_background itself accepted and must still
- * accept '0' for the gamma value it takes, because it isn't always used.
- *
- * Since this is an API change (albeit a very minor one that removes an
- * undocumented API feature) the following checks were only enabled in
- * libpng-1.6.0.
- */
- if (file_gamma <= 0)
- png_error(png_ptr, "invalid file gamma in png_set_gamma");
-
- if (scrn_gamma <= 0)
- png_error(png_ptr, "invalid screen gamma in png_set_gamma");
-
- /* Set the gamma values unconditionally - this overrides the value in the PNG
- * file if a gAMA chunk was present. png_set_alpha_mode provides a
- * different, easier, way to default the file gamma.
- */
- png_ptr->colorspace.gamma = file_gamma;
- png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
- png_ptr->screen_gamma = scrn_gamma;
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_gamma(png_structrp png_ptr, double scrn_gamma, double file_gamma)
-{
- png_set_gamma_fixed(png_ptr, convert_gamma_value(png_ptr, scrn_gamma),
- convert_gamma_value(png_ptr, file_gamma));
-}
-# endif /* FLOATING_POINT_SUPPORTED */
-#endif /* READ_GAMMA */
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
-/* Expand paletted images to RGB, expand grayscale images of
- * less than 8-bit depth to 8-bit depth, and expand tRNS chunks
- * to alpha channels.
- */
-void PNGAPI
-png_set_expand(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_expand");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-}
-
-/* GRR 19990627: the following three functions currently are identical
- * to png_set_expand(). However, it is entirely reasonable that someone
- * might wish to expand an indexed image to RGB but *not* expand a single,
- * fully transparent palette entry to a full alpha channel--perhaps instead
- * convert tRNS to the grayscale/RGB format (16-bit RGB value), or replace
- * the transparent color with a particular RGB value, or drop tRNS entirely.
- * IOW, a future version of the library may make the transformations flag
- * a bit more fine-grained, with separate bits for each of these three
- * functions.
- *
- * More to the point, these functions make it obvious what libpng will be
- * doing, whereas "expand" can (and does) mean any number of things.
- *
- * GRP 20060307: In libpng-1.2.9, png_set_gray_1_2_4_to_8() was modified
- * to expand only the sample depth but not to expand the tRNS to alpha
- * and its name was changed to png_set_expand_gray_1_2_4_to_8().
- */
-
-/* Expand paletted images to RGB. */
-void PNGAPI
-png_set_palette_to_rgb(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_palette_to_rgb");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-}
-
-/* Expand grayscale images of less than 8-bit depth to 8 bits. */
-void PNGAPI
-png_set_expand_gray_1_2_4_to_8(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_expand_gray_1_2_4_to_8");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= PNG_EXPAND;
-}
-
-/* Expand tRNS chunks to alpha channels. */
-void PNGAPI
-png_set_tRNS_to_alpha(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_tRNS_to_alpha");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= (PNG_EXPAND | PNG_EXPAND_tRNS);
-}
-#endif /* defined(PNG_READ_EXPAND_SUPPORTED) */
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
-/* Expand to 16-bit channels, expand the tRNS chunk too (because otherwise
- * it may not work correctly.)
- */
-void PNGAPI
-png_set_expand_16(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_expand_16");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- png_ptr->transformations |= (PNG_EXPAND_16 | PNG_EXPAND | PNG_EXPAND_tRNS);
-}
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-void PNGAPI
-png_set_gray_to_rgb(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_gray_to_rgb");
-
- if (!png_rtran_ok(png_ptr, 0))
- return;
-
- /* Because rgb must be 8 bits or more: */
- png_set_expand_gray_1_2_4_to_8(png_ptr);
- png_ptr->transformations |= PNG_GRAY_TO_RGB;
-}
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-void PNGFAPI
-png_set_rgb_to_gray_fixed(png_structrp png_ptr, int error_action,
- png_fixed_point red, png_fixed_point green)
-{
- png_debug(1, "in png_set_rgb_to_gray");
-
- /* Need the IHDR here because of the check on color_type below. */
- /* TODO: fix this */
- if (!png_rtran_ok(png_ptr, 1))
- return;
-
- switch(error_action)
- {
- case PNG_ERROR_ACTION_NONE:
- png_ptr->transformations |= PNG_RGB_TO_GRAY;
- break;
-
- case PNG_ERROR_ACTION_WARN:
- png_ptr->transformations |= PNG_RGB_TO_GRAY_WARN;
- break;
-
- case PNG_ERROR_ACTION_ERROR:
- png_ptr->transformations |= PNG_RGB_TO_GRAY_ERR;
- break;
-
- default:
- png_error(png_ptr, "invalid error action to rgb_to_gray");
- break;
- }
-
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-#ifdef PNG_READ_EXPAND_SUPPORTED
- png_ptr->transformations |= PNG_EXPAND;
-#else
- {
- /* Make this an error in 1.6 because otherwise the application may assume
- * that it just worked and get a memory overwrite.
- */
- png_error(png_ptr,
- "Cannot do RGB_TO_GRAY without EXPAND_SUPPORTED");
-
- /* png_ptr->transformations &= ~PNG_RGB_TO_GRAY; */
- }
-#endif
- {
- if (red >= 0 && green >= 0 && red + green <= PNG_FP_1)
- {
- png_uint_16 red_int, green_int;
-
- /* NOTE: this calculation does not round, but this behavior is retained
- * for consistency, the inaccuracy is very small. The code here always
- * overwrites the coefficients, regardless of whether they have been
- * defaulted or set already.
- */
- red_int = (png_uint_16)(((png_uint_32)red*32768)/100000);
- green_int = (png_uint_16)(((png_uint_32)green*32768)/100000);
-
- png_ptr->rgb_to_gray_red_coeff = red_int;
- png_ptr->rgb_to_gray_green_coeff = green_int;
- png_ptr->rgb_to_gray_coefficients_set = 1;
- }
-
- else
- {
- if (red >= 0 && green >= 0)
- png_app_warning(png_ptr,
- "ignoring out of range rgb_to_gray coefficients");
-
- /* Use the defaults, from the cHRM chunk if set, else the historical
- * values which are close to the sRGB/HDTV/ITU-Rec 709 values. See
- * png_do_rgb_to_gray for more discussion of the values. In this case
- * the coefficients are not marked as 'set' and are not overwritten if
- * something has already provided a default.
- */
- if (png_ptr->rgb_to_gray_red_coeff == 0 &&
- png_ptr->rgb_to_gray_green_coeff == 0)
- {
- png_ptr->rgb_to_gray_red_coeff = 6968;
- png_ptr->rgb_to_gray_green_coeff = 23434;
- /* png_ptr->rgb_to_gray_blue_coeff = 2366; */
- }
- }
- }
-}
-
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-/* Convert a RGB image to a grayscale of the same width. This allows us,
- * for example, to convert a 24 bpp RGB image into an 8 bpp grayscale image.
- */
-
-void PNGAPI
-png_set_rgb_to_gray(png_structrp png_ptr, int error_action, double red,
- double green)
-{
- png_set_rgb_to_gray_fixed(png_ptr, error_action,
- png_fixed(png_ptr, red, "rgb to gray red coefficient"),
- png_fixed(png_ptr, green, "rgb to gray green coefficient"));
-}
-#endif /* FLOATING POINT */
-
-#endif /* RGB_TO_GRAY */
-
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-void PNGAPI
-png_set_read_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr
- read_user_transform_fn)
-{
- png_debug(1, "in png_set_read_user_transform_fn");
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- png_ptr->transformations |= PNG_USER_TRANSFORM;
- png_ptr->read_user_transform_fn = read_user_transform_fn;
-#endif
-}
-#endif
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-#ifdef PNG_READ_GAMMA_SUPPORTED
-/* In the case of gamma transformations only do transformations on images where
- * the [file] gamma and screen_gamma are not close reciprocals, otherwise it
- * slows things down slightly, and also needlessly introduces small errors.
- */
-static int /* PRIVATE */
-png_gamma_threshold(png_fixed_point screen_gamma, png_fixed_point file_gamma)
-{
- /* PNG_GAMMA_THRESHOLD is the threshold for performing gamma
- * correction as a difference of the overall transform from 1.0
- *
- * We want to compare the threshold with s*f - 1, if we get
- * overflow here it is because of wacky gamma values so we
- * turn on processing anyway.
- */
- png_fixed_point gtest;
- return !png_muldiv(>est, screen_gamma, file_gamma, PNG_FP_1) ||
- png_gamma_significant(gtest);
-}
-#endif
-
-/* Initialize everything needed for the read. This includes modifying
- * the palette.
- */
-
-/*For the moment 'png_init_palette_transformations' and
- * 'png_init_rgb_transformations' only do some flag canceling optimizations.
- * The intent is that these two routines should have palette or rgb operations
- * extracted from 'png_init_read_transformations'.
- */
-static void /* PRIVATE */
-png_init_palette_transformations(png_structrp png_ptr)
-{
- /* Called to handle the (input) palette case. In png_do_read_transformations
- * the first step is to expand the palette if requested, so this code must
- * take care to only make changes that are invariant with respect to the
- * palette expansion, or only do them if there is no expansion.
- *
- * STRIP_ALPHA has already been handled in the caller (by setting num_trans
- * to 0.)
- */
- int input_has_alpha = 0;
- int input_has_transparency = 0;
-
- if (png_ptr->num_trans > 0)
- {
- int i;
-
- /* Ignore if all the entries are opaque (unlikely!) */
- for (i=0; i<png_ptr->num_trans; ++i)
- if (png_ptr->trans_alpha[i] == 255)
- continue;
- else if (png_ptr->trans_alpha[i] == 0)
- input_has_transparency = 1;
- else
- input_has_alpha = 1;
- }
-
- /* If no alpha we can optimize. */
- if (!input_has_alpha)
- {
- /* Any alpha means background and associative alpha processing is
- * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
- * and ENCODE_ALPHA are irrelevant.
- */
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
-
- if (!input_has_transparency)
- png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND);
- }
-
-#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* png_set_background handling - deals with the complexity of whether the
- * background color is in the file format or the screen format in the case
- * where an 'expand' will happen.
- */
-
- /* The following code cannot be entered in the alpha pre-multiplication case
- * because PNG_BACKGROUND_EXPAND is cancelled below.
- */
- if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- (png_ptr->transformations & PNG_EXPAND))
- {
- {
- png_ptr->background.red =
- png_ptr->palette[png_ptr->background.index].red;
- png_ptr->background.green =
- png_ptr->palette[png_ptr->background.index].green;
- png_ptr->background.blue =
- png_ptr->palette[png_ptr->background.index].blue;
-
-#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_INVERT_ALPHA)
- {
- if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
- {
- /* Invert the alpha channel (in tRNS) unless the pixels are
- * going to be expanded, in which case leave it for later
- */
- int i, istop = png_ptr->num_trans;
-
- for (i=0; i<istop; i++)
- png_ptr->trans_alpha[i] = (png_byte)(255 -
- png_ptr->trans_alpha[i]);
- }
- }
-#endif /* PNG_READ_INVERT_ALPHA_SUPPORTED */
- }
- } /* background expand and (therefore) no alpha association. */
-#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
-}
-
-static void /* PRIVATE */
-png_init_rgb_transformations(png_structrp png_ptr)
-{
- /* Added to libpng-1.5.4: check the color type to determine whether there
- * is any alpha or transparency in the image and simply cancel the
- * background and alpha mode stuff if there isn't.
- */
- int input_has_alpha = (png_ptr->color_type & PNG_COLOR_MASK_ALPHA) != 0;
- int input_has_transparency = png_ptr->num_trans > 0;
-
- /* If no alpha we can optimize. */
- if (!input_has_alpha)
- {
- /* Any alpha means background and associative alpha processing is
- * required, however if the alpha is 0 or 1 throughout OPTIIMIZE_ALPHA
- * and ENCODE_ALPHA are irrelevant.
- */
-# ifdef PNG_READ_ALPHA_MODE_SUPPORTED
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
-# endif
-
- if (!input_has_transparency)
- png_ptr->transformations &= ~(PNG_COMPOSE | PNG_BACKGROUND_EXPAND);
- }
-
-#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* png_set_background handling - deals with the complexity of whether the
- * background color is in the file format or the screen format in the case
- * where an 'expand' will happen.
- */
-
- /* The following code cannot be entered in the alpha pre-multiplication case
- * because PNG_BACKGROUND_EXPAND is cancelled below.
- */
- if ((png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- (png_ptr->transformations & PNG_EXPAND) &&
- !(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
- /* i.e., GRAY or GRAY_ALPHA */
- {
- {
- /* Expand background and tRNS chunks */
- int gray = png_ptr->background.gray;
- int trans_gray = png_ptr->trans_color.gray;
-
- switch (png_ptr->bit_depth)
- {
- case 1:
- gray *= 0xff;
- trans_gray *= 0xff;
- break;
-
- case 2:
- gray *= 0x55;
- trans_gray *= 0x55;
- break;
-
- case 4:
- gray *= 0x11;
- trans_gray *= 0x11;
- break;
-
- default:
-
- case 8:
- /* FALL THROUGH (Already 8 bits) */
-
- case 16:
- /* Already a full 16 bits */
- break;
- }
-
- png_ptr->background.red = png_ptr->background.green =
- png_ptr->background.blue = (png_uint_16)gray;
-
- if (!(png_ptr->transformations & PNG_EXPAND_tRNS))
- {
- png_ptr->trans_color.red = png_ptr->trans_color.green =
- png_ptr->trans_color.blue = (png_uint_16)trans_gray;
- }
- }
- } /* background expand and (therefore) no alpha association. */
-#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
-}
-
-void /* PRIVATE */
-png_init_read_transformations(png_structrp png_ptr)
-{
- png_debug(1, "in png_init_read_transformations");
-
- /* This internal function is called from png_read_start_row in pngrutil.c
- * and it is called before the 'rowbytes' calculation is done, so the code
- * in here can change or update the transformations flags.
- *
- * First do updates that do not depend on the details of the PNG image data
- * being processed.
- */
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
- /* Prior to 1.5.4 these tests were performed from png_set_gamma, 1.5.4 adds
- * png_set_alpha_mode and this is another source for a default file gamma so
- * the test needs to be performed later - here. In addition prior to 1.5.4
- * the tests were repeated for the PALETTE color type here - this is no
- * longer necessary (and doesn't seem to have been necessary before.)
- */
- {
- /* The following temporary indicates if overall gamma correction is
- * required.
- */
- int gamma_correction = 0;
-
- if (png_ptr->colorspace.gamma != 0) /* has been set */
- {
- if (png_ptr->screen_gamma != 0) /* screen set too */
- gamma_correction = png_gamma_threshold(png_ptr->colorspace.gamma,
- png_ptr->screen_gamma);
-
- else
- /* Assume the output matches the input; a long time default behavior
- * of libpng, although the standard has nothing to say about this.
- */
- png_ptr->screen_gamma = png_reciprocal(png_ptr->colorspace.gamma);
- }
-
- else if (png_ptr->screen_gamma != 0)
- /* The converse - assume the file matches the screen, note that this
- * perhaps undesireable default can (from 1.5.4) be changed by calling
- * png_set_alpha_mode (even if the alpha handling mode isn't required
- * or isn't changed from the default.)
- */
- png_ptr->colorspace.gamma = png_reciprocal(png_ptr->screen_gamma);
-
- else /* neither are set */
- /* Just in case the following prevents any processing - file and screen
- * are both assumed to be linear and there is no way to introduce a
- * third gamma value other than png_set_background with 'UNIQUE', and,
- * prior to 1.5.4
- */
- png_ptr->screen_gamma = png_ptr->colorspace.gamma = PNG_FP_1;
-
- /* We have a gamma value now. */
- png_ptr->colorspace.flags |= PNG_COLORSPACE_HAVE_GAMMA;
-
- /* Now turn the gamma transformation on or off as appropriate. Notice
- * that PNG_GAMMA just refers to the file->screen correction. Alpha
- * composition may independently cause gamma correction because it needs
- * linear data (e.g. if the file has a gAMA chunk but the screen gamma
- * hasn't been specified.) In any case this flag may get turned off in
- * the code immediately below if the transform can be handled outside the
- * row loop.
- */
- if (gamma_correction)
- png_ptr->transformations |= PNG_GAMMA;
-
- else
- png_ptr->transformations &= ~PNG_GAMMA;
- }
-#endif
-
- /* Certain transformations have the effect of preventing other
- * transformations that happen afterward in png_do_read_transformations,
- * resolve the interdependencies here. From the code of
- * png_do_read_transformations the order is:
- *
- * 1) PNG_EXPAND (including PNG_EXPAND_tRNS)
- * 2) PNG_STRIP_ALPHA (if no compose)
- * 3) PNG_RGB_TO_GRAY
- * 4) PNG_GRAY_TO_RGB iff !PNG_BACKGROUND_IS_GRAY
- * 5) PNG_COMPOSE
- * 6) PNG_GAMMA
- * 7) PNG_STRIP_ALPHA (if compose)
- * 8) PNG_ENCODE_ALPHA
- * 9) PNG_SCALE_16_TO_8
- * 10) PNG_16_TO_8
- * 11) PNG_QUANTIZE (converts to palette)
- * 12) PNG_EXPAND_16
- * 13) PNG_GRAY_TO_RGB iff PNG_BACKGROUND_IS_GRAY
- * 14) PNG_INVERT_MONO
- * 15) PNG_SHIFT
- * 16) PNG_PACK
- * 17) PNG_BGR
- * 18) PNG_PACKSWAP
- * 19) PNG_FILLER (includes PNG_ADD_ALPHA)
- * 20) PNG_INVERT_ALPHA
- * 21) PNG_SWAP_ALPHA
- * 22) PNG_SWAP_BYTES
- * 23) PNG_USER_TRANSFORM [must be last]
- */
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
- !(png_ptr->transformations & PNG_COMPOSE))
- {
- /* Stripping the alpha channel happens immediately after the 'expand'
- * transformations, before all other transformation, so it cancels out
- * the alpha handling. It has the side effect negating the effect of
- * PNG_EXPAND_tRNS too:
- */
- png_ptr->transformations &= ~(PNG_BACKGROUND_EXPAND | PNG_ENCODE_ALPHA |
- PNG_EXPAND_tRNS);
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
-
- /* Kill the tRNS chunk itself too. Prior to 1.5.4 this did not happen
- * so transparency information would remain just so long as it wasn't
- * expanded. This produces unexpected API changes if the set of things
- * that do PNG_EXPAND_tRNS changes (perfectly possible given the
- * documentation - which says ask for what you want, accept what you
- * get.) This makes the behavior consistent from 1.5.4:
- */
- png_ptr->num_trans = 0;
- }
-#endif /* STRIP_ALPHA supported, no COMPOSE */
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
- /* If the screen gamma is about 1.0 then the OPTIMIZE_ALPHA and ENCODE_ALPHA
- * settings will have no effect.
- */
- if (!png_gamma_significant(png_ptr->screen_gamma))
- {
- png_ptr->transformations &= ~PNG_ENCODE_ALPHA;
- png_ptr->flags &= ~PNG_FLAG_OPTIMIZE_ALPHA;
- }
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- /* Make sure the coefficients for the rgb to gray conversion are set
- * appropriately.
- */
- if (png_ptr->transformations & PNG_RGB_TO_GRAY)
- png_colorspace_set_rgb_coefficients(png_ptr);
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-#if defined(PNG_READ_EXPAND_SUPPORTED) && defined(PNG_READ_BACKGROUND_SUPPORTED)
- /* Detect gray background and attempt to enable optimization for
- * gray --> RGB case.
- *
- * Note: if PNG_BACKGROUND_EXPAND is set and color_type is either RGB or
- * RGB_ALPHA (in which case need_expand is superfluous anyway), the
- * background color might actually be gray yet not be flagged as such.
- * This is not a problem for the current code, which uses
- * PNG_BACKGROUND_IS_GRAY only to decide when to do the
- * png_do_gray_to_rgb() transformation.
- *
- * TODO: this code needs to be revised to avoid the complexity and
- * interdependencies. The color type of the background should be recorded in
- * png_set_background, along with the bit depth, then the code has a record
- * of exactly what color space the background is currently in.
- */
- if (png_ptr->transformations & PNG_BACKGROUND_EXPAND)
- {
- /* PNG_BACKGROUND_EXPAND: the background is in the file color space, so if
- * the file was grayscale the background value is gray.
- */
- if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
- png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
- }
-
- else if (png_ptr->transformations & PNG_COMPOSE)
- {
- /* PNG_COMPOSE: png_set_background was called with need_expand false,
- * so the color is in the color space of the output or png_set_alpha_mode
- * was called and the color is black. Ignore RGB_TO_GRAY because that
- * happens before GRAY_TO_RGB.
- */
- if (png_ptr->transformations & PNG_GRAY_TO_RGB)
- {
- if (png_ptr->background.red == png_ptr->background.green &&
- png_ptr->background.red == png_ptr->background.blue)
- {
- png_ptr->mode |= PNG_BACKGROUND_IS_GRAY;
- png_ptr->background.gray = png_ptr->background.red;
- }
- }
- }
-#endif /* PNG_READ_EXPAND_SUPPORTED && PNG_READ_BACKGROUND_SUPPORTED */
-#endif /* PNG_READ_GRAY_TO_RGB_SUPPORTED */
-
- /* For indexed PNG data (PNG_COLOR_TYPE_PALETTE) many of the transformations
- * can be performed directly on the palette, and some (such as rgb to gray)
- * can be optimized inside the palette. This is particularly true of the
- * composite (background and alpha) stuff, which can be pretty much all done
- * in the palette even if the result is expanded to RGB or gray afterward.
- *
- * NOTE: this is Not Yet Implemented, the code behaves as in 1.5.1 and
- * earlier and the palette stuff is actually handled on the first row. This
- * leads to the reported bug that the palette returned by png_get_PLTE is not
- * updated.
- */
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- png_init_palette_transformations(png_ptr);
-
- else
- png_init_rgb_transformations(png_ptr);
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
- defined(PNG_READ_EXPAND_16_SUPPORTED)
- if ((png_ptr->transformations & PNG_EXPAND_16) &&
- (png_ptr->transformations & PNG_COMPOSE) &&
- !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- png_ptr->bit_depth != 16)
- {
- /* TODO: fix this. Because the expand_16 operation is after the compose
- * handling the background color must be 8, not 16, bits deep, but the
- * application will supply a 16-bit value so reduce it here.
- *
- * The PNG_BACKGROUND_EXPAND code above does not expand to 16 bits at
- * present, so that case is ok (until do_expand_16 is moved.)
- *
- * NOTE: this discards the low 16 bits of the user supplied background
- * color, but until expand_16 works properly there is no choice!
- */
-# define CHOP(x) (x)=((png_uint_16)PNG_DIV257(x))
- CHOP(png_ptr->background.red);
- CHOP(png_ptr->background.green);
- CHOP(png_ptr->background.blue);
- CHOP(png_ptr->background.gray);
-# undef CHOP
- }
-#endif /* PNG_READ_BACKGROUND_SUPPORTED && PNG_READ_EXPAND_16_SUPPORTED */
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) && \
- (defined(PNG_READ_SCALE_16_TO_8_SUPPORTED) || \
- defined(PNG_READ_STRIP_16_TO_8_SUPPORTED))
- if ((png_ptr->transformations & (PNG_16_TO_8|PNG_SCALE_16_TO_8)) &&
- (png_ptr->transformations & PNG_COMPOSE) &&
- !(png_ptr->transformations & PNG_BACKGROUND_EXPAND) &&
- png_ptr->bit_depth == 16)
- {
- /* On the other hand, if a 16-bit file is to be reduced to 8-bits per
- * component this will also happen after PNG_COMPOSE and so the background
- * color must be pre-expanded here.
- *
- * TODO: fix this too.
- */
- png_ptr->background.red = (png_uint_16)(png_ptr->background.red * 257);
- png_ptr->background.green =
- (png_uint_16)(png_ptr->background.green * 257);
- png_ptr->background.blue = (png_uint_16)(png_ptr->background.blue * 257);
- png_ptr->background.gray = (png_uint_16)(png_ptr->background.gray * 257);
- }
-#endif
-
- /* NOTE: below 'PNG_READ_ALPHA_MODE_SUPPORTED' is presumed to also enable the
- * background support (see the comments in scripts/pnglibconf.dfa), this
- * allows pre-multiplication of the alpha channel to be implemented as
- * compositing on black. This is probably sub-optimal and has been done in
- * 1.5.4 betas simply to enable external critique and testing (i.e. to
- * implement the new API quickly, without lots of internal changes.)
- */
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-# ifdef PNG_READ_BACKGROUND_SUPPORTED
- /* Includes ALPHA_MODE */
- png_ptr->background_1 = png_ptr->background;
-# endif
-
- /* This needs to change - in the palette image case a whole set of tables are
- * built when it would be quicker to just calculate the correct value for
- * each palette entry directly. Also, the test is too tricky - why check
- * PNG_RGB_TO_GRAY if PNG_GAMMA is not set? The answer seems to be that
- * PNG_GAMMA is cancelled even if the gamma is known? The test excludes the
- * PNG_COMPOSE case, so apparently if there is no *overall* gamma correction
- * the gamma tables will not be built even if composition is required on a
- * gamma encoded value.
- *
- * In 1.5.4 this is addressed below by an additional check on the individual
- * file gamma - if it is not 1.0 both RGB_TO_GRAY and COMPOSE need the
- * tables.
- */
- if ((png_ptr->transformations & PNG_GAMMA)
- || ((png_ptr->transformations & PNG_RGB_TO_GRAY)
- && (png_gamma_significant(png_ptr->colorspace.gamma) ||
- png_gamma_significant(png_ptr->screen_gamma)))
- || ((png_ptr->transformations & PNG_COMPOSE)
- && (png_gamma_significant(png_ptr->colorspace.gamma)
- || png_gamma_significant(png_ptr->screen_gamma)
-# ifdef PNG_READ_BACKGROUND_SUPPORTED
- || (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_UNIQUE
- && png_gamma_significant(png_ptr->background_gamma))
-# endif
- )) || ((png_ptr->transformations & PNG_ENCODE_ALPHA)
- && png_gamma_significant(png_ptr->screen_gamma))
- )
- {
- png_build_gamma_table(png_ptr, png_ptr->bit_depth);
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- if (png_ptr->transformations & PNG_COMPOSE)
- {
- /* Issue a warning about this combination: because RGB_TO_GRAY is
- * optimized to do the gamma transform if present yet do_background has
- * to do the same thing if both options are set a
- * double-gamma-correction happens. This is true in all versions of
- * libpng to date.
- */
- if (png_ptr->transformations & PNG_RGB_TO_GRAY)
- png_warning(png_ptr,
- "libpng does not support gamma+background+rgb_to_gray");
-
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- /* We don't get to here unless there is a tRNS chunk with non-opaque
- * entries - see the checking code at the start of this function.
- */
- png_color back, back_1;
- png_colorp palette = png_ptr->palette;
- int num_palette = png_ptr->num_palette;
- int i;
- if (png_ptr->background_gamma_type == PNG_BACKGROUND_GAMMA_FILE)
- {
-
- back.red = png_ptr->gamma_table[png_ptr->background.red];
- back.green = png_ptr->gamma_table[png_ptr->background.green];
- back.blue = png_ptr->gamma_table[png_ptr->background.blue];
-
- back_1.red = png_ptr->gamma_to_1[png_ptr->background.red];
- back_1.green = png_ptr->gamma_to_1[png_ptr->background.green];
- back_1.blue = png_ptr->gamma_to_1[png_ptr->background.blue];
- }
- else
- {
- png_fixed_point g, gs;
-
- switch (png_ptr->background_gamma_type)
- {
- case PNG_BACKGROUND_GAMMA_SCREEN:
- g = (png_ptr->screen_gamma);
- gs = PNG_FP_1;
- break;
-
- case PNG_BACKGROUND_GAMMA_FILE:
- g = png_reciprocal(png_ptr->colorspace.gamma);
- gs = png_reciprocal2(png_ptr->colorspace.gamma,
- png_ptr->screen_gamma);
- break;
-
- case PNG_BACKGROUND_GAMMA_UNIQUE:
- g = png_reciprocal(png_ptr->background_gamma);
- gs = png_reciprocal2(png_ptr->background_gamma,
- png_ptr->screen_gamma);
- break;
- default:
- g = PNG_FP_1; /* back_1 */
- gs = PNG_FP_1; /* back */
- break;
- }
-
- if (png_gamma_significant(gs))
- {
- back.red = png_gamma_8bit_correct(png_ptr->background.red,
- gs);
- back.green = png_gamma_8bit_correct(png_ptr->background.green,
- gs);
- back.blue = png_gamma_8bit_correct(png_ptr->background.blue,
- gs);
- }
-
- else
- {
- back.red = (png_byte)png_ptr->background.red;
- back.green = (png_byte)png_ptr->background.green;
- back.blue = (png_byte)png_ptr->background.blue;
- }
-
- if (png_gamma_significant(g))
- {
- back_1.red = png_gamma_8bit_correct(png_ptr->background.red,
- g);
- back_1.green = png_gamma_8bit_correct(
- png_ptr->background.green, g);
- back_1.blue = png_gamma_8bit_correct(png_ptr->background.blue,
- g);
- }
-
- else
- {
- back_1.red = (png_byte)png_ptr->background.red;
- back_1.green = (png_byte)png_ptr->background.green;
- back_1.blue = (png_byte)png_ptr->background.blue;
- }
- }
-
- for (i = 0; i < num_palette; i++)
- {
- if (i < (int)png_ptr->num_trans &&
- png_ptr->trans_alpha[i] != 0xff)
- {
- if (png_ptr->trans_alpha[i] == 0)
- {
- palette[i] = back;
- }
- else /* if (png_ptr->trans_alpha[i] != 0xff) */
- {
- png_byte v, w;
-
- v = png_ptr->gamma_to_1[palette[i].red];
- png_composite(w, v, png_ptr->trans_alpha[i], back_1.red);
- palette[i].red = png_ptr->gamma_from_1[w];
-
- v = png_ptr->gamma_to_1[palette[i].green];
- png_composite(w, v, png_ptr->trans_alpha[i], back_1.green);
- palette[i].green = png_ptr->gamma_from_1[w];
-
- v = png_ptr->gamma_to_1[palette[i].blue];
- png_composite(w, v, png_ptr->trans_alpha[i], back_1.blue);
- palette[i].blue = png_ptr->gamma_from_1[w];
- }
- }
- else
- {
- palette[i].red = png_ptr->gamma_table[palette[i].red];
- palette[i].green = png_ptr->gamma_table[palette[i].green];
- palette[i].blue = png_ptr->gamma_table[palette[i].blue];
- }
- }
-
- /* Prevent the transformations being done again.
- *
- * NOTE: this is highly dubious; it removes the transformations in
- * place. This seems inconsistent with the general treatment of the
- * transformations elsewhere.
- */
- png_ptr->transformations &= ~(PNG_COMPOSE | PNG_GAMMA);
- } /* color_type == PNG_COLOR_TYPE_PALETTE */
-
- /* if (png_ptr->background_gamma_type!=PNG_BACKGROUND_GAMMA_UNKNOWN) */
- else /* color_type != PNG_COLOR_TYPE_PALETTE */
- {
- int gs_sig, g_sig;
- png_fixed_point g = PNG_FP_1; /* Correction to linear */
- png_fixed_point gs = PNG_FP_1; /* Correction to screen */
-
- switch (png_ptr->background_gamma_type)
- {
- case PNG_BACKGROUND_GAMMA_SCREEN:
- g = png_ptr->screen_gamma;
- /* gs = PNG_FP_1; */
- break;
-
- case PNG_BACKGROUND_GAMMA_FILE:
- g = png_reciprocal(png_ptr->colorspace.gamma);
- gs = png_reciprocal2(png_ptr->colorspace.gamma,
- png_ptr->screen_gamma);
- break;
-
- case PNG_BACKGROUND_GAMMA_UNIQUE:
- g = png_reciprocal(png_ptr->background_gamma);
- gs = png_reciprocal2(png_ptr->background_gamma,
- png_ptr->screen_gamma);
- break;
-
- default:
- png_error(png_ptr, "invalid background gamma type");
- }
-
- g_sig = png_gamma_significant(g);
- gs_sig = png_gamma_significant(gs);
-
- if (g_sig)
- png_ptr->background_1.gray = png_gamma_correct(png_ptr,
- png_ptr->background.gray, g);
-
- if (gs_sig)
- png_ptr->background.gray = png_gamma_correct(png_ptr,
- png_ptr->background.gray, gs);
-
- if ((png_ptr->background.red != png_ptr->background.green) ||
- (png_ptr->background.red != png_ptr->background.blue) ||
- (png_ptr->background.red != png_ptr->background.gray))
- {
- /* RGB or RGBA with color background */
- if (g_sig)
- {
- png_ptr->background_1.red = png_gamma_correct(png_ptr,
- png_ptr->background.red, g);
-
- png_ptr->background_1.green = png_gamma_correct(png_ptr,
- png_ptr->background.green, g);
-
- png_ptr->background_1.blue = png_gamma_correct(png_ptr,
- png_ptr->background.blue, g);
- }
-
- if (gs_sig)
- {
- png_ptr->background.red = png_gamma_correct(png_ptr,
- png_ptr->background.red, gs);
-
- png_ptr->background.green = png_gamma_correct(png_ptr,
- png_ptr->background.green, gs);
-
- png_ptr->background.blue = png_gamma_correct(png_ptr,
- png_ptr->background.blue, gs);
- }
- }
-
- else
- {
- /* GRAY, GRAY ALPHA, RGB, or RGBA with gray background */
- png_ptr->background_1.red = png_ptr->background_1.green
- = png_ptr->background_1.blue = png_ptr->background_1.gray;
-
- png_ptr->background.red = png_ptr->background.green
- = png_ptr->background.blue = png_ptr->background.gray;
- }
-
- /* The background is now in screen gamma: */
- png_ptr->background_gamma_type = PNG_BACKGROUND_GAMMA_SCREEN;
- } /* color_type != PNG_COLOR_TYPE_PALETTE */
- }/* png_ptr->transformations & PNG_BACKGROUND */
-
- else
- /* Transformation does not include PNG_BACKGROUND */
-#endif /* PNG_READ_BACKGROUND_SUPPORTED */
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- /* RGB_TO_GRAY needs to have non-gamma-corrected values! */
- && ((png_ptr->transformations & PNG_EXPAND) == 0 ||
- (png_ptr->transformations & PNG_RGB_TO_GRAY) == 0)
-#endif
- )
- {
- png_colorp palette = png_ptr->palette;
- int num_palette = png_ptr->num_palette;
- int i;
-
- /* NOTE: there are other transformations that should probably be in
- * here too.
- */
- for (i = 0; i < num_palette; i++)
- {
- palette[i].red = png_ptr->gamma_table[palette[i].red];
- palette[i].green = png_ptr->gamma_table[palette[i].green];
- palette[i].blue = png_ptr->gamma_table[palette[i].blue];
- }
-
- /* Done the gamma correction. */
- png_ptr->transformations &= ~PNG_GAMMA;
- } /* color_type == PALETTE && !PNG_BACKGROUND transformation */
- }
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- else
-#endif
-#endif /* PNG_READ_GAMMA_SUPPORTED */
-
-#ifdef PNG_READ_BACKGROUND_SUPPORTED
- /* No GAMMA transformation (see the hanging else 4 lines above) */
- if ((png_ptr->transformations & PNG_COMPOSE) &&
- (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
- {
- int i;
- int istop = (int)png_ptr->num_trans;
- png_color back;
- png_colorp palette = png_ptr->palette;
-
- back.red = (png_byte)png_ptr->background.red;
- back.green = (png_byte)png_ptr->background.green;
- back.blue = (png_byte)png_ptr->background.blue;
-
- for (i = 0; i < istop; i++)
- {
- if (png_ptr->trans_alpha[i] == 0)
- {
- palette[i] = back;
- }
-
- else if (png_ptr->trans_alpha[i] != 0xff)
- {
- /* The png_composite() macro is defined in png.h */
- png_composite(palette[i].red, palette[i].red,
- png_ptr->trans_alpha[i], back.red);
-
- png_composite(palette[i].green, palette[i].green,
- png_ptr->trans_alpha[i], back.green);
-
- png_composite(palette[i].blue, palette[i].blue,
- png_ptr->trans_alpha[i], back.blue);
- }
- }
-
- png_ptr->transformations &= ~PNG_COMPOSE;
- }
-#endif /* PNG_READ_BACKGROUND_SUPPORTED */
-
-#ifdef PNG_READ_SHIFT_SUPPORTED
- if ((png_ptr->transformations & PNG_SHIFT) &&
- !(png_ptr->transformations & PNG_EXPAND) &&
- (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE))
- {
- int i;
- int istop = png_ptr->num_palette;
- int shift = 8 - png_ptr->sig_bit.red;
-
- png_ptr->transformations &= ~PNG_SHIFT;
-
- /* significant bits can be in the range 1 to 7 for a meaninful result, if
- * the number of significant bits is 0 then no shift is done (this is an
- * error condition which is silently ignored.)
- */
- if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
- {
- int component = png_ptr->palette[i].red;
-
- component >>= shift;
- png_ptr->palette[i].red = (png_byte)component;
- }
-
- shift = 8 - png_ptr->sig_bit.green;
- if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
- {
- int component = png_ptr->palette[i].green;
-
- component >>= shift;
- png_ptr->palette[i].green = (png_byte)component;
- }
-
- shift = 8 - png_ptr->sig_bit.blue;
- if (shift > 0 && shift < 8) for (i=0; i<istop; ++i)
- {
- int component = png_ptr->palette[i].blue;
-
- component >>= shift;
- png_ptr->palette[i].blue = (png_byte)component;
- }
- }
-#endif /* PNG_READ_SHIFT_SUPPORTED */
-}
-
-/* Modify the info structure to reflect the transformations. The
- * info should be updated so a PNG file could be written with it,
- * assuming the transformations result in valid PNG data.
- */
-void /* PRIVATE */
-png_read_transform_info(png_structrp png_ptr, png_inforp info_ptr)
-{
- png_debug(1, "in png_read_transform_info");
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
- if (png_ptr->transformations & PNG_EXPAND)
- {
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- /* This check must match what actually happens in
- * png_do_expand_palette; if it ever checks the tRNS chunk to see if
- * it is all opaque we must do the same (at present it does not.)
- */
- if (png_ptr->num_trans > 0)
- info_ptr->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
-
- else
- info_ptr->color_type = PNG_COLOR_TYPE_RGB;
-
- info_ptr->bit_depth = 8;
- info_ptr->num_trans = 0;
- }
- else
- {
- if (png_ptr->num_trans)
- {
- if (png_ptr->transformations & PNG_EXPAND_tRNS)
- info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
- }
- if (info_ptr->bit_depth < 8)
- info_ptr->bit_depth = 8;
-
- info_ptr->num_trans = 0;
- }
- }
-#endif
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
- defined(PNG_READ_ALPHA_MODE_SUPPORTED)
- /* The following is almost certainly wrong unless the background value is in
- * the screen space!
- */
- if (png_ptr->transformations & PNG_COMPOSE)
- info_ptr->background = png_ptr->background;
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
- /* The following used to be conditional on PNG_GAMMA (prior to 1.5.4),
- * however it seems that the code in png_init_read_transformations, which has
- * been called before this from png_read_update_info->png_read_start_row
- * sometimes does the gamma transform and cancels the flag.
- *
- * TODO: this looks wrong; the info_ptr should end up with a gamma equal to
- * the screen_gamma value. The following probably results in weirdness if
- * the info_ptr is used by the app after the rows have been read.
- */
- info_ptr->colorspace.gamma = png_ptr->colorspace.gamma;
-#endif
-
- if (info_ptr->bit_depth == 16)
- {
-# ifdef PNG_READ_16BIT_SUPPORTED
-# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
- if (png_ptr->transformations & PNG_SCALE_16_TO_8)
- info_ptr->bit_depth = 8;
-# endif
-
-# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
- if (png_ptr->transformations & PNG_16_TO_8)
- info_ptr->bit_depth = 8;
-# endif
-
-# else
- /* No 16 bit support: force chopping 16-bit input down to 8, in this case
- * the app program can chose if both APIs are available by setting the
- * correct scaling to use.
- */
-# ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
- /* For compatibility with previous versions use the strip method by
- * default. This code works because if PNG_SCALE_16_TO_8 is already
- * set the code below will do that in preference to the chop.
- */
- png_ptr->transformations |= PNG_16_TO_8;
- info_ptr->bit_depth = 8;
-# else
-
-# ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
- png_ptr->transformations |= PNG_SCALE_16_TO_8;
- info_ptr->bit_depth = 8;
-# else
-
- CONFIGURATION ERROR: you must enable at least one 16 to 8 method
-# endif
-# endif
-#endif /* !READ_16BIT_SUPPORTED */
- }
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- if (png_ptr->transformations & PNG_GRAY_TO_RGB)
- info_ptr->color_type = (png_byte)(info_ptr->color_type |
- PNG_COLOR_MASK_COLOR);
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- if (png_ptr->transformations & PNG_RGB_TO_GRAY)
- info_ptr->color_type = (png_byte)(info_ptr->color_type &
- ~PNG_COLOR_MASK_COLOR);
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
- if (png_ptr->transformations & PNG_QUANTIZE)
- {
- if (((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
- (info_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)) &&
- png_ptr->palette_lookup && info_ptr->bit_depth == 8)
- {
- info_ptr->color_type = PNG_COLOR_TYPE_PALETTE;
- }
- }
-#endif
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
- if (png_ptr->transformations & PNG_EXPAND_16 && info_ptr->bit_depth == 8 &&
- info_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
- {
- info_ptr->bit_depth = 16;
- }
-#endif
-
-#ifdef PNG_READ_PACK_SUPPORTED
- if ((png_ptr->transformations & PNG_PACK) && (info_ptr->bit_depth < 8))
- info_ptr->bit_depth = 8;
-#endif
-
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- info_ptr->channels = 1;
-
- else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
- info_ptr->channels = 3;
-
- else
- info_ptr->channels = 1;
-
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_STRIP_ALPHA)
- {
- info_ptr->color_type = (png_byte)(info_ptr->color_type &
- ~PNG_COLOR_MASK_ALPHA);
- info_ptr->num_trans = 0;
- }
-#endif
-
- if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
- info_ptr->channels++;
-
-#ifdef PNG_READ_FILLER_SUPPORTED
- /* STRIP_ALPHA and FILLER allowed: MASK_ALPHA bit stripped above */
- if ((png_ptr->transformations & PNG_FILLER) &&
- ((info_ptr->color_type == PNG_COLOR_TYPE_RGB) ||
- (info_ptr->color_type == PNG_COLOR_TYPE_GRAY)))
- {
- info_ptr->channels++;
- /* If adding a true alpha channel not just filler */
- if (png_ptr->transformations & PNG_ADD_ALPHA)
- info_ptr->color_type |= PNG_COLOR_MASK_ALPHA;
- }
-#endif
-
-#if defined(PNG_USER_TRANSFORM_PTR_SUPPORTED) && \
-defined(PNG_READ_USER_TRANSFORM_SUPPORTED)
- if (png_ptr->transformations & PNG_USER_TRANSFORM)
- {
- if (info_ptr->bit_depth < png_ptr->user_transform_depth)
- info_ptr->bit_depth = png_ptr->user_transform_depth;
-
- if (info_ptr->channels < png_ptr->user_transform_channels)
- info_ptr->channels = png_ptr->user_transform_channels;
- }
-#endif
-
- info_ptr->pixel_depth = (png_byte)(info_ptr->channels *
- info_ptr->bit_depth);
-
- info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, info_ptr->width);
-
- /* Adding in 1.5.4: cache the above value in png_struct so that we can later
- * check in png_rowbytes that the user buffer won't get overwritten. Note
- * that the field is not always set - if png_read_update_info isn't called
- * the application has to either not do any transforms or get the calculation
- * right itself.
- */
- png_ptr->info_rowbytes = info_ptr->rowbytes;
-
-#ifndef PNG_READ_EXPAND_SUPPORTED
- if (png_ptr)
- return;
-#endif
-}
-
-/* Transform the row. The order of transformations is significant,
- * and is very touchy. If you add a transformation, take care to
- * decide how it fits in with the other transformations here.
- */
-void /* PRIVATE */
-png_do_read_transformations(png_structrp png_ptr, png_row_infop row_info)
-{
- png_debug(1, "in png_do_read_transformations");
-
- if (png_ptr->row_buf == NULL)
- {
- /* Prior to 1.5.4 this output row/pass where the NULL pointer is, but this
- * error is incredibly rare and incredibly easy to debug without this
- * information.
- */
- png_error(png_ptr, "NULL row buffer");
- }
-
- /* The following is debugging; prior to 1.5.4 the code was never compiled in;
- * in 1.5.4 PNG_FLAG_DETECT_UNINITIALIZED was added and the macro
- * PNG_WARN_UNINITIALIZED_ROW removed. In 1.6 the new flag is set only for
- * all transformations, however in practice the ROW_INIT always gets done on
- * demand, if necessary.
- */
- if ((png_ptr->flags & PNG_FLAG_DETECT_UNINITIALIZED) != 0 &&
- !(png_ptr->flags & PNG_FLAG_ROW_INIT))
- {
- /* Application has failed to call either png_read_start_image() or
- * png_read_update_info() after setting transforms that expand pixels.
- * This check added to libpng-1.2.19 (but not enabled until 1.5.4).
- */
- png_error(png_ptr, "Uninitialized row");
- }
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
- if (png_ptr->transformations & PNG_EXPAND)
- {
- if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- png_do_expand_palette(row_info, png_ptr->row_buf + 1,
- png_ptr->palette, png_ptr->trans_alpha, png_ptr->num_trans);
- }
-
- else
- {
- if (png_ptr->num_trans &&
- (png_ptr->transformations & PNG_EXPAND_tRNS))
- png_do_expand(row_info, png_ptr->row_buf + 1,
- &(png_ptr->trans_color));
-
- else
- png_do_expand(row_info, png_ptr->row_buf + 1,
- NULL);
- }
- }
-#endif
-
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
- !(png_ptr->transformations & PNG_COMPOSE) &&
- (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
- row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
- png_do_strip_channel(row_info, png_ptr->row_buf + 1,
- 0 /* at_start == false, because SWAP_ALPHA happens later */);
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- if (png_ptr->transformations & PNG_RGB_TO_GRAY)
- {
- int rgb_error =
- png_do_rgb_to_gray(png_ptr, row_info,
- png_ptr->row_buf + 1);
-
- if (rgb_error)
- {
- png_ptr->rgb_to_gray_status=1;
- if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
- PNG_RGB_TO_GRAY_WARN)
- png_warning(png_ptr, "png_do_rgb_to_gray found nongray pixel");
-
- if ((png_ptr->transformations & PNG_RGB_TO_GRAY) ==
- PNG_RGB_TO_GRAY_ERR)
- png_error(png_ptr, "png_do_rgb_to_gray found nongray pixel");
- }
- }
-#endif
-
-/* From Andreas Dilger e-mail to png-implement, 26 March 1998:
- *
- * In most cases, the "simple transparency" should be done prior to doing
- * gray-to-RGB, or you will have to test 3x as many bytes to check if a
- * pixel is transparent. You would also need to make sure that the
- * transparency information is upgraded to RGB.
- *
- * To summarize, the current flow is:
- * - Gray + simple transparency -> compare 1 or 2 gray bytes and composite
- * with background "in place" if transparent,
- * convert to RGB if necessary
- * - Gray + alpha -> composite with gray background and remove alpha bytes,
- * convert to RGB if necessary
- *
- * To support RGB backgrounds for gray images we need:
- * - Gray + simple transparency -> convert to RGB + simple transparency,
- * compare 3 or 6 bytes and composite with
- * background "in place" if transparent
- * (3x compare/pixel compared to doing
- * composite with gray bkgrnd)
- * - Gray + alpha -> convert to RGB + alpha, composite with background and
- * remove alpha bytes (3x float
- * operations/pixel compared with composite
- * on gray background)
- *
- * Greg's change will do this. The reason it wasn't done before is for
- * performance, as this increases the per-pixel operations. If we would check
- * in advance if the background was gray or RGB, and position the gray-to-RGB
- * transform appropriately, then it would save a lot of work/time.
- */
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- /* If gray -> RGB, do so now only if background is non-gray; else do later
- * for performance reasons
- */
- if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
- !(png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
- png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
-#endif
-
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
- defined(PNG_READ_ALPHA_MODE_SUPPORTED)
- if (png_ptr->transformations & PNG_COMPOSE)
- png_do_compose(row_info, png_ptr->row_buf + 1, png_ptr);
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if ((png_ptr->transformations & PNG_GAMMA) &&
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- /* Because RGB_TO_GRAY does the gamma transform. */
- !(png_ptr->transformations & PNG_RGB_TO_GRAY) &&
-#endif
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
- defined(PNG_READ_ALPHA_MODE_SUPPORTED)
- /* Because PNG_COMPOSE does the gamma transform if there is something to
- * do (if there is an alpha channel or transparency.)
- */
- !((png_ptr->transformations & PNG_COMPOSE) &&
- ((png_ptr->num_trans != 0) ||
- (png_ptr->color_type & PNG_COLOR_MASK_ALPHA))) &&
-#endif
- /* Because png_init_read_transformations transforms the palette, unless
- * RGB_TO_GRAY will do the transform.
- */
- (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE))
- png_do_gamma(row_info, png_ptr->row_buf + 1, png_ptr);
-#endif
-
-#ifdef PNG_READ_STRIP_ALPHA_SUPPORTED
- if ((png_ptr->transformations & PNG_STRIP_ALPHA) &&
- (png_ptr->transformations & PNG_COMPOSE) &&
- (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA ||
- row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA))
- png_do_strip_channel(row_info, png_ptr->row_buf + 1,
- 0 /* at_start == false, because SWAP_ALPHA happens later */);
-#endif
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
- if ((png_ptr->transformations & PNG_ENCODE_ALPHA) &&
- (row_info->color_type & PNG_COLOR_MASK_ALPHA))
- png_do_encode_alpha(row_info, png_ptr->row_buf + 1, png_ptr);
-#endif
-
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
- if (png_ptr->transformations & PNG_SCALE_16_TO_8)
- png_do_scale_16_to_8(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
- /* There is no harm in doing both of these because only one has any effect,
- * by putting the 'scale' option first if the app asks for scale (either by
- * calling the API or in a TRANSFORM flag) this is what happens.
- */
- if (png_ptr->transformations & PNG_16_TO_8)
- png_do_chop(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
- if (png_ptr->transformations & PNG_QUANTIZE)
- {
- png_do_quantize(row_info, png_ptr->row_buf + 1,
- png_ptr->palette_lookup, png_ptr->quantize_index);
-
- if (row_info->rowbytes == 0)
- png_error(png_ptr, "png_do_quantize returned rowbytes=0");
- }
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
- /* Do the expansion now, after all the arithmetic has been done. Notice
- * that previous transformations can handle the PNG_EXPAND_16 flag if this
- * is efficient (particularly true in the case of gamma correction, where
- * better accuracy results faster!)
- */
- if (png_ptr->transformations & PNG_EXPAND_16)
- png_do_expand_16(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- /* NOTE: moved here in 1.5.4 (from much later in this list.) */
- if ((png_ptr->transformations & PNG_GRAY_TO_RGB) &&
- (png_ptr->mode & PNG_BACKGROUND_IS_GRAY))
- png_do_gray_to_rgb(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_INVERT_SUPPORTED
- if (png_ptr->transformations & PNG_INVERT_MONO)
- png_do_invert(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_SHIFT_SUPPORTED
- if (png_ptr->transformations & PNG_SHIFT)
- png_do_unshift(row_info, png_ptr->row_buf + 1,
- &(png_ptr->shift));
-#endif
-
-#ifdef PNG_READ_PACK_SUPPORTED
- if (png_ptr->transformations & PNG_PACK)
- png_do_unpack(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
- /* Added at libpng-1.5.10 */
- if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
- png_ptr->num_palette_max >= 0)
- png_do_check_palette_indexes(png_ptr, row_info);
-#endif
-
-#ifdef PNG_READ_BGR_SUPPORTED
- if (png_ptr->transformations & PNG_BGR)
- png_do_bgr(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (png_ptr->transformations & PNG_PACKSWAP)
- png_do_packswap(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_FILLER_SUPPORTED
- if (png_ptr->transformations & PNG_FILLER)
- png_do_read_filler(row_info, png_ptr->row_buf + 1,
- (png_uint_32)png_ptr->filler, png_ptr->flags);
-#endif
-
-#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_INVERT_ALPHA)
- png_do_read_invert_alpha(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_SWAP_ALPHA)
- png_do_read_swap_alpha(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_READ_16BIT_SUPPORTED
-#ifdef PNG_READ_SWAP_SUPPORTED
- if (png_ptr->transformations & PNG_SWAP_BYTES)
- png_do_swap(row_info, png_ptr->row_buf + 1);
-#endif
-#endif
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- if (png_ptr->transformations & PNG_USER_TRANSFORM)
- {
- if (png_ptr->read_user_transform_fn != NULL)
- (*(png_ptr->read_user_transform_fn)) /* User read transform function */
- (png_ptr, /* png_ptr */
- row_info, /* row_info: */
- /* png_uint_32 width; width of row */
- /* png_size_t rowbytes; number of bytes in row */
- /* png_byte color_type; color type of pixels */
- /* png_byte bit_depth; bit depth of samples */
- /* png_byte channels; number of channels (1-4) */
- /* png_byte pixel_depth; bits per pixel (depth*channels) */
- png_ptr->row_buf + 1); /* start of pixel data for row */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
- if (png_ptr->user_transform_depth)
- row_info->bit_depth = png_ptr->user_transform_depth;
-
- if (png_ptr->user_transform_channels)
- row_info->channels = png_ptr->user_transform_channels;
-#endif
- row_info->pixel_depth = (png_byte)(row_info->bit_depth *
- row_info->channels);
-
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_info->width);
- }
-#endif
-}
-
-#ifdef PNG_READ_PACK_SUPPORTED
-/* Unpack pixels of 1, 2, or 4 bits per pixel into 1 byte per pixel,
- * without changing the actual values. Thus, if you had a row with
- * a bit depth of 1, you would end up with bytes that only contained
- * the numbers 0 or 1. If you would rather they contain 0 and 255, use
- * png_do_shift() after this.
- */
-void /* PRIVATE */
-png_do_unpack(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_unpack");
-
- if (row_info->bit_depth < 8)
- {
- png_uint_32 i;
- png_uint_32 row_width=row_info->width;
-
- switch (row_info->bit_depth)
- {
- case 1:
- {
- png_bytep sp = row + (png_size_t)((row_width - 1) >> 3);
- png_bytep dp = row + (png_size_t)row_width - 1;
- png_uint_32 shift = 7 - (int)((row_width + 7) & 0x07);
- for (i = 0; i < row_width; i++)
- {
- *dp = (png_byte)((*sp >> shift) & 0x01);
-
- if (shift == 7)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift++;
-
- dp--;
- }
- break;
- }
-
- case 2:
- {
-
- png_bytep sp = row + (png_size_t)((row_width - 1) >> 2);
- png_bytep dp = row + (png_size_t)row_width - 1;
- png_uint_32 shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
- for (i = 0; i < row_width; i++)
- {
- *dp = (png_byte)((*sp >> shift) & 0x03);
-
- if (shift == 6)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift += 2;
-
- dp--;
- }
- break;
- }
-
- case 4:
- {
- png_bytep sp = row + (png_size_t)((row_width - 1) >> 1);
- png_bytep dp = row + (png_size_t)row_width - 1;
- png_uint_32 shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
- for (i = 0; i < row_width; i++)
- {
- *dp = (png_byte)((*sp >> shift) & 0x0f);
-
- if (shift == 4)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift = 4;
-
- dp--;
- }
- break;
- }
-
- default:
- break;
- }
- row_info->bit_depth = 8;
- row_info->pixel_depth = (png_byte)(8 * row_info->channels);
- row_info->rowbytes = row_width * row_info->channels;
- }
-}
-#endif
-
-#ifdef PNG_READ_SHIFT_SUPPORTED
-/* Reverse the effects of png_do_shift. This routine merely shifts the
- * pixels back to their significant bits values. Thus, if you have
- * a row of bit depth 8, but only 5 are significant, this will shift
- * the values back to 0 through 31.
- */
-void /* PRIVATE */
-png_do_unshift(png_row_infop row_info, png_bytep row,
- png_const_color_8p sig_bits)
-{
- int color_type;
-
- png_debug(1, "in png_do_unshift");
-
- /* The palette case has already been handled in the _init routine. */
- color_type = row_info->color_type;
-
- if (color_type != PNG_COLOR_TYPE_PALETTE)
- {
- int shift[4];
- int channels = 0;
- int bit_depth = row_info->bit_depth;
-
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- shift[channels++] = bit_depth - sig_bits->red;
- shift[channels++] = bit_depth - sig_bits->green;
- shift[channels++] = bit_depth - sig_bits->blue;
- }
-
- else
- {
- shift[channels++] = bit_depth - sig_bits->gray;
- }
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- {
- shift[channels++] = bit_depth - sig_bits->alpha;
- }
-
- {
- int c, have_shift;
-
- for (c = have_shift = 0; c < channels; ++c)
- {
- /* A shift of more than the bit depth is an error condition but it
- * gets ignored here.
- */
- if (shift[c] <= 0 || shift[c] >= bit_depth)
- shift[c] = 0;
-
- else
- have_shift = 1;
- }
-
- if (!have_shift)
- return;
- }
-
- switch (bit_depth)
- {
- default:
- /* Must be 1bpp gray: should not be here! */
- /* NOTREACHED */
- break;
-
- case 2:
- /* Must be 2bpp gray */
- /* assert(channels == 1 && shift[0] == 1) */
- {
- png_bytep bp = row;
- png_bytep bp_end = bp + row_info->rowbytes;
-
- while (bp < bp_end)
- {
- int b = (*bp >> 1) & 0x55;
- *bp++ = (png_byte)b;
- }
- break;
- }
-
- case 4:
- /* Must be 4bpp gray */
- /* assert(channels == 1) */
- {
- png_bytep bp = row;
- png_bytep bp_end = bp + row_info->rowbytes;
- int gray_shift = shift[0];
- int mask = 0xf >> gray_shift;
-
- mask |= mask << 4;
-
- while (bp < bp_end)
- {
- int b = (*bp >> gray_shift) & mask;
- *bp++ = (png_byte)b;
- }
- break;
- }
-
- case 8:
- /* Single byte components, G, GA, RGB, RGBA */
- {
- png_bytep bp = row;
- png_bytep bp_end = bp + row_info->rowbytes;
- int channel = 0;
-
- while (bp < bp_end)
- {
- int b = *bp >> shift[channel];
- if (++channel >= channels)
- channel = 0;
- *bp++ = (png_byte)b;
- }
- break;
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- case 16:
- /* Double byte components, G, GA, RGB, RGBA */
- {
- png_bytep bp = row;
- png_bytep bp_end = bp + row_info->rowbytes;
- int channel = 0;
-
- while (bp < bp_end)
- {
- int value = (bp[0] << 8) + bp[1];
-
- value >>= shift[channel];
- if (++channel >= channels)
- channel = 0;
- *bp++ = (png_byte)(value >> 8);
- *bp++ = (png_byte)(value & 0xff);
- }
- break;
- }
-#endif
- }
- }
-}
-#endif
-
-#ifdef PNG_READ_SCALE_16_TO_8_SUPPORTED
-/* Scale rows of bit depth 16 down to 8 accurately */
-void /* PRIVATE */
-png_do_scale_16_to_8(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_scale_16_to_8");
-
- if (row_info->bit_depth == 16)
- {
- png_bytep sp = row; /* source */
- png_bytep dp = row; /* destination */
- png_bytep ep = sp + row_info->rowbytes; /* end+1 */
-
- while (sp < ep)
- {
- /* The input is an array of 16 bit components, these must be scaled to
- * 8 bits each. For a 16 bit value V the required value (from the PNG
- * specification) is:
- *
- * (V * 255) / 65535
- *
- * This reduces to round(V / 257), or floor((V + 128.5)/257)
- *
- * Represent V as the two byte value vhi.vlo. Make a guess that the
- * result is the top byte of V, vhi, then the correction to this value
- * is:
- *
- * error = floor(((V-vhi.vhi) + 128.5) / 257)
- * = floor(((vlo-vhi) + 128.5) / 257)
- *
- * This can be approximated using integer arithmetic (and a signed
- * shift):
- *
- * error = (vlo-vhi+128) >> 8;
- *
- * The approximate differs from the exact answer only when (vlo-vhi) is
- * 128; it then gives a correction of +1 when the exact correction is
- * 0. This gives 128 errors. The exact answer (correct for all 16 bit
- * input values) is:
- *
- * error = (vlo-vhi+128)*65535 >> 24;
- *
- * An alternative arithmetic calculation which also gives no errors is:
- *
- * (V * 255 + 32895) >> 16
- */
-
- png_int_32 tmp = *sp++; /* must be signed! */
- tmp += (((int)*sp++ - tmp + 128) * 65535) >> 24;
- *dp++ = (png_byte)tmp;
- }
-
- row_info->bit_depth = 8;
- row_info->pixel_depth = (png_byte)(8 * row_info->channels);
- row_info->rowbytes = row_info->width * row_info->channels;
- }
-}
-#endif
-
-#ifdef PNG_READ_STRIP_16_TO_8_SUPPORTED
-void /* PRIVATE */
-/* Simply discard the low byte. This was the default behavior prior
- * to libpng-1.5.4.
- */
-png_do_chop(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_chop");
-
- if (row_info->bit_depth == 16)
- {
- png_bytep sp = row; /* source */
- png_bytep dp = row; /* destination */
- png_bytep ep = sp + row_info->rowbytes; /* end+1 */
-
- while (sp < ep)
- {
- *dp++ = *sp;
- sp += 2; /* skip low byte */
- }
-
- row_info->bit_depth = 8;
- row_info->pixel_depth = (png_byte)(8 * row_info->channels);
- row_info->rowbytes = row_info->width * row_info->channels;
- }
-}
-#endif
-
-#ifdef PNG_READ_SWAP_ALPHA_SUPPORTED
-void /* PRIVATE */
-png_do_read_swap_alpha(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_read_swap_alpha");
-
- {
- png_uint_32 row_width = row_info->width;
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- /* This converts from RGBA to ARGB */
- if (row_info->bit_depth == 8)
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- save = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save;
- }
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- /* This converts from RRGGBBAA to AARRGGBB */
- else
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save[2];
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- save[0] = *(--sp);
- save[1] = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save[0];
- *(--dp) = save[1];
- }
- }
-#endif
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- {
- /* This converts from GA to AG */
- if (row_info->bit_depth == 8)
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- save = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save;
- }
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- /* This converts from GGAA to AAGG */
- else
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_byte save[2];
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- save[0] = *(--sp);
- save[1] = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = save[0];
- *(--dp) = save[1];
- }
- }
-#endif
- }
- }
-}
-#endif
-
-#ifdef PNG_READ_INVERT_ALPHA_SUPPORTED
-void /* PRIVATE */
-png_do_read_invert_alpha(png_row_infop row_info, png_bytep row)
-{
- png_uint_32 row_width;
- png_debug(1, "in png_do_read_invert_alpha");
-
- row_width = row_info->width;
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This inverts the alpha channel in RGBA */
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
-
-/* This does nothing:
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- We can replace it with:
-*/
- sp-=3;
- dp=sp;
- }
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- /* This inverts the alpha channel in RRGGBBAA */
- else
- {
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
- *(--dp) = (png_byte)(255 - *(--sp));
-
-/* This does nothing:
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- We can replace it with:
-*/
- sp-=6;
- dp=sp;
- }
- }
-#endif
- }
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This inverts the alpha channel in GA */
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
- *(--dp) = *(--sp);
- }
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- else
- {
- /* This inverts the alpha channel in GGAA */
- png_bytep sp = row + row_info->rowbytes;
- png_bytep dp = sp;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = (png_byte)(255 - *(--sp));
- *(--dp) = (png_byte)(255 - *(--sp));
-/*
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
-*/
- sp-=2;
- dp=sp;
- }
- }
-#endif
- }
-}
-#endif
-
-#ifdef PNG_READ_FILLER_SUPPORTED
-/* Add filler channel if we have RGB color */
-void /* PRIVATE */
-png_do_read_filler(png_row_infop row_info, png_bytep row,
- png_uint_32 filler, png_uint_32 flags)
-{
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- png_byte hi_filler = (png_byte)((filler>>8) & 0xff);
-#endif
- png_byte lo_filler = (png_byte)(filler & 0xff);
-
- png_debug(1, "in png_do_read_filler");
-
- if (
- row_info->color_type == PNG_COLOR_TYPE_GRAY)
- {
- if (row_info->bit_depth == 8)
- {
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- /* This changes the data from G to GX */
- png_bytep sp = row + (png_size_t)row_width;
- png_bytep dp = sp + (png_size_t)row_width;
- for (i = 1; i < row_width; i++)
- {
- *(--dp) = lo_filler;
- *(--dp) = *(--sp);
- }
- *(--dp) = lo_filler;
- row_info->channels = 2;
- row_info->pixel_depth = 16;
- row_info->rowbytes = row_width * 2;
- }
-
- else
- {
- /* This changes the data from G to XG */
- png_bytep sp = row + (png_size_t)row_width;
- png_bytep dp = sp + (png_size_t)row_width;
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = *(--sp);
- *(--dp) = lo_filler;
- }
- row_info->channels = 2;
- row_info->pixel_depth = 16;
- row_info->rowbytes = row_width * 2;
- }
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- else if (row_info->bit_depth == 16)
- {
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- /* This changes the data from GG to GGXX */
- png_bytep sp = row + (png_size_t)row_width * 2;
- png_bytep dp = sp + (png_size_t)row_width * 2;
- for (i = 1; i < row_width; i++)
- {
- *(--dp) = hi_filler;
- *(--dp) = lo_filler;
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- }
- *(--dp) = hi_filler;
- *(--dp) = lo_filler;
- row_info->channels = 2;
- row_info->pixel_depth = 32;
- row_info->rowbytes = row_width * 4;
- }
-
- else
- {
- /* This changes the data from GG to XXGG */
- png_bytep sp = row + (png_size_t)row_width * 2;
- png_bytep dp = sp + (png_size_t)row_width * 2;
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = hi_filler;
- *(--dp) = lo_filler;
- }
- row_info->channels = 2;
- row_info->pixel_depth = 32;
- row_info->rowbytes = row_width * 4;
- }
- }
-#endif
- } /* COLOR_TYPE == GRAY */
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- {
- if (row_info->bit_depth == 8)
- {
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- /* This changes the data from RGB to RGBX */
- png_bytep sp = row + (png_size_t)row_width * 3;
- png_bytep dp = sp + (png_size_t)row_width;
- for (i = 1; i < row_width; i++)
- {
- *(--dp) = lo_filler;
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- }
- *(--dp) = lo_filler;
- row_info->channels = 4;
- row_info->pixel_depth = 32;
- row_info->rowbytes = row_width * 4;
- }
-
- else
- {
- /* This changes the data from RGB to XRGB */
- png_bytep sp = row + (png_size_t)row_width * 3;
- png_bytep dp = sp + (png_size_t)row_width;
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = lo_filler;
- }
- row_info->channels = 4;
- row_info->pixel_depth = 32;
- row_info->rowbytes = row_width * 4;
- }
- }
-
-#ifdef PNG_READ_16BIT_SUPPORTED
- else if (row_info->bit_depth == 16)
- {
- if (flags & PNG_FLAG_FILLER_AFTER)
- {
- /* This changes the data from RRGGBB to RRGGBBXX */
- png_bytep sp = row + (png_size_t)row_width * 6;
- png_bytep dp = sp + (png_size_t)row_width * 2;
- for (i = 1; i < row_width; i++)
- {
- *(--dp) = hi_filler;
- *(--dp) = lo_filler;
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- }
- *(--dp) = hi_filler;
- *(--dp) = lo_filler;
- row_info->channels = 4;
- row_info->pixel_depth = 64;
- row_info->rowbytes = row_width * 8;
- }
-
- else
- {
- /* This changes the data from RRGGBB to XXRRGGBB */
- png_bytep sp = row + (png_size_t)row_width * 6;
- png_bytep dp = sp + (png_size_t)row_width * 2;
- for (i = 0; i < row_width; i++)
- {
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = *(--sp);
- *(--dp) = hi_filler;
- *(--dp) = lo_filler;
- }
-
- row_info->channels = 4;
- row_info->pixel_depth = 64;
- row_info->rowbytes = row_width * 8;
- }
- }
-#endif
- } /* COLOR_TYPE == RGB */
-}
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
-/* Expand grayscale files to RGB, with or without alpha */
-void /* PRIVATE */
-png_do_gray_to_rgb(png_row_infop row_info, png_bytep row)
-{
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- png_debug(1, "in png_do_gray_to_rgb");
-
- if (row_info->bit_depth >= 8 &&
- !(row_info->color_type & PNG_COLOR_MASK_COLOR))
- {
- if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
- {
- if (row_info->bit_depth == 8)
- {
- /* This changes G to RGB */
- png_bytep sp = row + (png_size_t)row_width - 1;
- png_bytep dp = sp + (png_size_t)row_width * 2;
- for (i = 0; i < row_width; i++)
- {
- *(dp--) = *sp;
- *(dp--) = *sp;
- *(dp--) = *(sp--);
- }
- }
-
- else
- {
- /* This changes GG to RRGGBB */
- png_bytep sp = row + (png_size_t)row_width * 2 - 1;
- png_bytep dp = sp + (png_size_t)row_width * 4;
- for (i = 0; i < row_width; i++)
- {
- *(dp--) = *sp;
- *(dp--) = *(sp - 1);
- *(dp--) = *sp;
- *(dp--) = *(sp - 1);
- *(dp--) = *(sp--);
- *(dp--) = *(sp--);
- }
- }
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This changes GA to RGBA */
- png_bytep sp = row + (png_size_t)row_width * 2 - 1;
- png_bytep dp = sp + (png_size_t)row_width * 2;
- for (i = 0; i < row_width; i++)
- {
- *(dp--) = *(sp--);
- *(dp--) = *sp;
- *(dp--) = *sp;
- *(dp--) = *(sp--);
- }
- }
-
- else
- {
- /* This changes GGAA to RRGGBBAA */
- png_bytep sp = row + (png_size_t)row_width * 4 - 1;
- png_bytep dp = sp + (png_size_t)row_width * 4;
- for (i = 0; i < row_width; i++)
- {
- *(dp--) = *(sp--);
- *(dp--) = *(sp--);
- *(dp--) = *sp;
- *(dp--) = *(sp - 1);
- *(dp--) = *sp;
- *(dp--) = *(sp - 1);
- *(dp--) = *(sp--);
- *(dp--) = *(sp--);
- }
- }
- }
- row_info->channels = (png_byte)(row_info->channels + 2);
- row_info->color_type |= PNG_COLOR_MASK_COLOR;
- row_info->pixel_depth = (png_byte)(row_info->channels *
- row_info->bit_depth);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
- }
-}
-#endif
-
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
-/* Reduce RGB files to grayscale, with or without alpha
- * using the equation given in Poynton's ColorFAQ of 1998-01-04 at
- * <http://www.inforamp.net/~poynton/> (THIS LINK IS DEAD June 2008 but
- * versions dated 1998 through November 2002 have been archived at
- * http://web.archive.org/web/20000816232553/http://www.inforamp.net/
- * ~poynton/notes/colour_and_gamma/ColorFAQ.txt )
- * Charles Poynton poynton at poynton.com
- *
- * Y = 0.212671 * R + 0.715160 * G + 0.072169 * B
- *
- * which can be expressed with integers as
- *
- * Y = (6969 * R + 23434 * G + 2365 * B)/32768
- *
- * Poynton's current link (as of January 2003 through July 2011):
- * <http://www.poynton.com/notes/colour_and_gamma/>
- * has changed the numbers slightly:
- *
- * Y = 0.2126*R + 0.7152*G + 0.0722*B
- *
- * which can be expressed with integers as
- *
- * Y = (6966 * R + 23436 * G + 2366 * B)/32768
- *
- * Historically, however, libpng uses numbers derived from the ITU-R Rec 709
- * end point chromaticities and the D65 white point. Depending on the
- * precision used for the D65 white point this produces a variety of different
- * numbers, however if the four decimal place value used in ITU-R Rec 709 is
- * used (0.3127,0.3290) the Y calculation would be:
- *
- * Y = (6968 * R + 23435 * G + 2366 * B)/32768
- *
- * While this is correct the rounding results in an overflow for white, because
- * the sum of the rounded coefficients is 32769, not 32768. Consequently
- * libpng uses, instead, the closest non-overflowing approximation:
- *
- * Y = (6968 * R + 23434 * G + 2366 * B)/32768
- *
- * Starting with libpng-1.5.5, if the image being converted has a cHRM chunk
- * (including an sRGB chunk) then the chromaticities are used to calculate the
- * coefficients. See the chunk handling in pngrutil.c for more information.
- *
- * In all cases the calculation is to be done in a linear colorspace. If no
- * gamma information is available to correct the encoding of the original RGB
- * values this results in an implicit assumption that the original PNG RGB
- * values were linear.
- *
- * Other integer coefficents can be used via png_set_rgb_to_gray(). Because
- * the API takes just red and green coefficients the blue coefficient is
- * calculated to make the sum 32768. This will result in different rounding
- * to that used above.
- */
-int /* PRIVATE */
-png_do_rgb_to_gray(png_structrp png_ptr, png_row_infop row_info, png_bytep row)
-
-{
- int rgb_error = 0;
-
- png_debug(1, "in png_do_rgb_to_gray");
-
- if (!(row_info->color_type & PNG_COLOR_MASK_PALETTE) &&
- (row_info->color_type & PNG_COLOR_MASK_COLOR))
- {
- PNG_CONST png_uint_32 rc = png_ptr->rgb_to_gray_red_coeff;
- PNG_CONST png_uint_32 gc = png_ptr->rgb_to_gray_green_coeff;
- PNG_CONST png_uint_32 bc = 32768 - rc - gc;
- PNG_CONST png_uint_32 row_width = row_info->width;
- PNG_CONST int have_alpha =
- (row_info->color_type & PNG_COLOR_MASK_ALPHA) != 0;
-
- if (row_info->bit_depth == 8)
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- /* Notice that gamma to/from 1 are not necessarily inverses (if
- * there is an overall gamma correction). Prior to 1.5.5 this code
- * checked the linearized values for equality; this doesn't match
- * the documentation, the original values must be checked.
- */
- if (png_ptr->gamma_from_1 != NULL && png_ptr->gamma_to_1 != NULL)
- {
- png_bytep sp = row;
- png_bytep dp = row;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- png_byte red = *(sp++);
- png_byte green = *(sp++);
- png_byte blue = *(sp++);
-
- if (red != green || red != blue)
- {
- red = png_ptr->gamma_to_1[red];
- green = png_ptr->gamma_to_1[green];
- blue = png_ptr->gamma_to_1[blue];
-
- rgb_error |= 1;
- *(dp++) = png_ptr->gamma_from_1[
- (rc*red + gc*green + bc*blue + 16384)>>15];
- }
-
- else
- {
- /* If there is no overall correction the table will not be
- * set.
- */
- if (png_ptr->gamma_table != NULL)
- red = png_ptr->gamma_table[red];
-
- *(dp++) = red;
- }
-
- if (have_alpha)
- *(dp++) = *(sp++);
- }
- }
- else
-#endif
- {
- png_bytep sp = row;
- png_bytep dp = row;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- png_byte red = *(sp++);
- png_byte green = *(sp++);
- png_byte blue = *(sp++);
-
- if (red != green || red != blue)
- {
- rgb_error |= 1;
- /* NOTE: this is the historical approach which simply
- * truncates the results.
- */
- *(dp++) = (png_byte)((rc*red + gc*green + bc*blue)>>15);
- }
-
- else
- *(dp++) = red;
-
- if (have_alpha)
- *(dp++) = *(sp++);
- }
- }
- }
-
- else /* RGB bit_depth == 16 */
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (png_ptr->gamma_16_to_1 != NULL && png_ptr->gamma_16_from_1 != NULL)
- {
- png_bytep sp = row;
- png_bytep dp = row;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 red, green, blue, w;
-
- red = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
- green = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
- blue = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
-
- if (red == green && red == blue)
- {
- if (png_ptr->gamma_16_table != NULL)
- w = png_ptr->gamma_16_table[(red&0xff)
- >> png_ptr->gamma_shift][red>>8];
-
- else
- w = red;
- }
-
- else
- {
- png_uint_16 red_1 = png_ptr->gamma_16_to_1[(red&0xff)
- >> png_ptr->gamma_shift][red>>8];
- png_uint_16 green_1 =
- png_ptr->gamma_16_to_1[(green&0xff) >>
- png_ptr->gamma_shift][green>>8];
- png_uint_16 blue_1 = png_ptr->gamma_16_to_1[(blue&0xff)
- >> png_ptr->gamma_shift][blue>>8];
- png_uint_16 gray16 = (png_uint_16)((rc*red_1 + gc*green_1
- + bc*blue_1 + 16384)>>15);
- w = png_ptr->gamma_16_from_1[(gray16&0xff) >>
- png_ptr->gamma_shift][gray16 >> 8];
- rgb_error |= 1;
- }
-
- *(dp++) = (png_byte)((w>>8) & 0xff);
- *(dp++) = (png_byte)(w & 0xff);
-
- if (have_alpha)
- {
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- }
- }
- }
- else
-#endif
- {
- png_bytep sp = row;
- png_bytep dp = row;
- png_uint_32 i;
-
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 red, green, blue, gray16;
-
- red = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
- green = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
- blue = (png_uint_16)(((*(sp))<<8) | *(sp + 1)); sp += 2;
-
- if (red != green || red != blue)
- rgb_error |= 1;
-
- /* From 1.5.5 in the 16 bit case do the accurate conversion even
- * in the 'fast' case - this is because this is where the code
- * ends up when handling linear 16 bit data.
- */
- gray16 = (png_uint_16)((rc*red + gc*green + bc*blue + 16384) >>
- 15);
- *(dp++) = (png_byte)((gray16>>8) & 0xff);
- *(dp++) = (png_byte)(gray16 & 0xff);
-
- if (have_alpha)
- {
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- }
- }
- }
- }
-
- row_info->channels = (png_byte)(row_info->channels - 2);
- row_info->color_type = (png_byte)(row_info->color_type &
- ~PNG_COLOR_MASK_COLOR);
- row_info->pixel_depth = (png_byte)(row_info->channels *
- row_info->bit_depth);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
- }
- return rgb_error;
-}
-#endif
-#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
-
-#ifdef PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
-/* Build a grayscale palette. Palette is assumed to be 1 << bit_depth
- * large of png_color. This lets grayscale images be treated as
- * paletted. Most useful for gamma correction and simplification
- * of code. This API is not used internally.
- */
-void PNGAPI
-png_build_grayscale_palette(int bit_depth, png_colorp palette)
-{
- int num_palette;
- int color_inc;
- int i;
- int v;
-
- png_debug(1, "in png_do_build_grayscale_palette");
-
- if (palette == NULL)
- return;
-
- switch (bit_depth)
- {
- case 1:
- num_palette = 2;
- color_inc = 0xff;
- break;
-
- case 2:
- num_palette = 4;
- color_inc = 0x55;
- break;
-
- case 4:
- num_palette = 16;
- color_inc = 0x11;
- break;
-
- case 8:
- num_palette = 256;
- color_inc = 1;
- break;
-
- default:
- num_palette = 0;
- color_inc = 0;
- break;
- }
-
- for (i = 0, v = 0; i < num_palette; i++, v += color_inc)
- {
- palette[i].red = (png_byte)v;
- palette[i].green = (png_byte)v;
- palette[i].blue = (png_byte)v;
- }
-}
-#endif
-
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
- defined(PNG_READ_ALPHA_MODE_SUPPORTED)
-/* Replace any alpha or transparency with the supplied background color.
- * "background" is already in the screen gamma, while "background_1" is
- * at a gamma of 1.0. Paletted files have already been taken care of.
- */
-void /* PRIVATE */
-png_do_compose(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
-{
-#ifdef PNG_READ_GAMMA_SUPPORTED
- png_const_bytep gamma_table = png_ptr->gamma_table;
- png_const_bytep gamma_from_1 = png_ptr->gamma_from_1;
- png_const_bytep gamma_to_1 = png_ptr->gamma_to_1;
- png_const_uint_16pp gamma_16 = png_ptr->gamma_16_table;
- png_const_uint_16pp gamma_16_from_1 = png_ptr->gamma_16_from_1;
- png_const_uint_16pp gamma_16_to_1 = png_ptr->gamma_16_to_1;
- int gamma_shift = png_ptr->gamma_shift;
- int optimize = (png_ptr->flags & PNG_FLAG_OPTIMIZE_ALPHA) != 0;
-#endif
-
- png_bytep sp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
- int shift;
-
- png_debug(1, "in png_do_compose");
-
- {
- switch (row_info->color_type)
- {
- case PNG_COLOR_TYPE_GRAY:
- {
- switch (row_info->bit_depth)
- {
- case 1:
- {
- sp = row;
- shift = 7;
- for (i = 0; i < row_width; i++)
- {
- if ((png_uint_16)((*sp >> shift) & 0x01)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x7f7f >> (7 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (!shift)
- {
- shift = 7;
- sp++;
- }
-
- else
- shift--;
- }
- break;
- }
-
- case 2:
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
- {
- sp = row;
- shift = 6;
- for (i = 0; i < row_width; i++)
- {
- if ((png_uint_16)((*sp >> shift) & 0x03)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- else
- {
- unsigned int p = (*sp >> shift) & 0x03;
- unsigned int g = (gamma_table [p | (p << 2) |
- (p << 4) | (p << 6)] >> 6) & 0x03;
- unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
- tmp |= g << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (!shift)
- {
- shift = 6;
- sp++;
- }
-
- else
- shift -= 2;
- }
- }
-
- else
-#endif
- {
- sp = row;
- shift = 6;
- for (i = 0; i < row_width; i++)
- {
- if ((png_uint_16)((*sp >> shift) & 0x03)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0x3f3f >> (6 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (!shift)
- {
- shift = 6;
- sp++;
- }
-
- else
- shift -= 2;
- }
- }
- break;
- }
-
- case 4:
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
- {
- sp = row;
- shift = 4;
- for (i = 0; i < row_width; i++)
- {
- if ((png_uint_16)((*sp >> shift) & 0x0f)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0xf0f >> (4 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- else
- {
- unsigned int p = (*sp >> shift) & 0x0f;
- unsigned int g = (gamma_table[p | (p << 4)] >> 4) &
- 0x0f;
- unsigned int tmp = *sp & (0xf0f >> (4 - shift));
- tmp |= g << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (!shift)
- {
- shift = 4;
- sp++;
- }
-
- else
- shift -= 4;
- }
- }
-
- else
-#endif
- {
- sp = row;
- shift = 4;
- for (i = 0; i < row_width; i++)
- {
- if ((png_uint_16)((*sp >> shift) & 0x0f)
- == png_ptr->trans_color.gray)
- {
- unsigned int tmp = *sp & (0xf0f >> (4 - shift));
- tmp |= png_ptr->background.gray << shift;
- *sp = (png_byte)(tmp & 0xff);
- }
-
- if (!shift)
- {
- shift = 4;
- sp++;
- }
-
- else
- shift -= 4;
- }
- }
- break;
- }
-
- case 8:
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp++)
- {
- if (*sp == png_ptr->trans_color.gray)
- *sp = (png_byte)png_ptr->background.gray;
-
- else
- *sp = gamma_table[*sp];
- }
- }
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp++)
- {
- if (*sp == png_ptr->trans_color.gray)
- *sp = (png_byte)png_ptr->background.gray;
- }
- }
- break;
- }
-
- case 16:
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_uint_16 v;
-
- v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
-
- if (v == png_ptr->trans_color.gray)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray
- & 0xff);
- }
-
- else
- {
- v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- }
- }
- }
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_uint_16 v;
-
- v = (png_uint_16)(((*sp) << 8) + *(sp + 1));
-
- if (v == png_ptr->trans_color.gray)
- {
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray
- & 0xff);
- }
- }
- }
- break;
- }
-
- default:
- break;
- }
- break;
- }
-
- case PNG_COLOR_TYPE_RGB:
- {
- if (row_info->bit_depth == 8)
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_table != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 3)
- {
- if (*sp == png_ptr->trans_color.red &&
- *(sp + 1) == png_ptr->trans_color.green &&
- *(sp + 2) == png_ptr->trans_color.blue)
- {
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
-
- else
- {
- *sp = gamma_table[*sp];
- *(sp + 1) = gamma_table[*(sp + 1)];
- *(sp + 2) = gamma_table[*(sp + 2)];
- }
- }
- }
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 3)
- {
- if (*sp == png_ptr->trans_color.red &&
- *(sp + 1) == png_ptr->trans_color.green &&
- *(sp + 2) == png_ptr->trans_color.blue)
- {
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
- }
- }
- }
- else /* if (row_info->bit_depth == 16) */
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 6)
- {
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
-
- png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
-
- png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
- + *(sp + 5));
-
- if (r == png_ptr->trans_color.red &&
- g == png_ptr->trans_color.green &&
- b == png_ptr->trans_color.blue)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
-
- else
- {
- png_uint_16 v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
-
- v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
- *(sp + 2) = (png_byte)((v >> 8) & 0xff);
- *(sp + 3) = (png_byte)(v & 0xff);
-
- v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
- *(sp + 4) = (png_byte)((v >> 8) & 0xff);
- *(sp + 5) = (png_byte)(v & 0xff);
- }
- }
- }
-
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 6)
- {
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
-
- png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
-
- png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
- + *(sp + 5));
-
- if (r == png_ptr->trans_color.red &&
- g == png_ptr->trans_color.green &&
- b == png_ptr->trans_color.blue)
- {
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
- }
- }
- }
- break;
- }
-
- case PNG_COLOR_TYPE_GRAY_ALPHA:
- {
- if (row_info->bit_depth == 8)
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
- gamma_table != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_uint_16 a = *(sp + 1);
-
- if (a == 0xff)
- *sp = gamma_table[*sp];
-
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)png_ptr->background.gray;
- }
-
- else
- {
- png_byte v, w;
-
- v = gamma_to_1[*sp];
- png_composite(w, v, a, png_ptr->background_1.gray);
- if (!optimize)
- w = gamma_from_1[w];
- *sp = w;
- }
- }
- }
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 2)
- {
- png_byte a = *(sp + 1);
-
- if (a == 0)
- *sp = (png_byte)png_ptr->background.gray;
-
- else if (a < 0xff)
- png_composite(*sp, *sp, a, png_ptr->background.gray);
- }
- }
- }
- else /* if (png_ptr->bit_depth == 16) */
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
- gamma_16_to_1 != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
- {
- png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
-
- if (a == (png_uint_16)0xffff)
- {
- png_uint_16 v;
-
- v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- }
-
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
- }
-
- else
- {
- png_uint_16 g, v, w;
-
- g = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
- png_composite_16(v, g, a, png_ptr->background_1.gray);
- if (optimize)
- w = v;
- else
- w = gamma_16_from_1[(v&0xff) >> gamma_shift][v >> 8];
- *sp = (png_byte)((w >> 8) & 0xff);
- *(sp + 1) = (png_byte)(w & 0xff);
- }
- }
- }
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
- {
- png_uint_16 a = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
-
- if (a == 0)
- {
- *sp = (png_byte)((png_ptr->background.gray >> 8)
- & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.gray & 0xff);
- }
-
- else if (a < 0xffff)
- {
- png_uint_16 g, v;
-
- g = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_composite_16(v, g, a, png_ptr->background.gray);
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- }
- }
- }
- }
- break;
- }
-
- case PNG_COLOR_TYPE_RGB_ALPHA:
- {
- if (row_info->bit_depth == 8)
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_to_1 != NULL && gamma_from_1 != NULL &&
- gamma_table != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
- {
- png_byte a = *(sp + 3);
-
- if (a == 0xff)
- {
- *sp = gamma_table[*sp];
- *(sp + 1) = gamma_table[*(sp + 1)];
- *(sp + 2) = gamma_table[*(sp + 2)];
- }
-
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
-
- else
- {
- png_byte v, w;
-
- v = gamma_to_1[*sp];
- png_composite(w, v, a, png_ptr->background_1.red);
- if (!optimize) w = gamma_from_1[w];
- *sp = w;
-
- v = gamma_to_1[*(sp + 1)];
- png_composite(w, v, a, png_ptr->background_1.green);
- if (!optimize) w = gamma_from_1[w];
- *(sp + 1) = w;
-
- v = gamma_to_1[*(sp + 2)];
- png_composite(w, v, a, png_ptr->background_1.blue);
- if (!optimize) w = gamma_from_1[w];
- *(sp + 2) = w;
- }
- }
- }
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 4)
- {
- png_byte a = *(sp + 3);
-
- if (a == 0)
- {
- *sp = (png_byte)png_ptr->background.red;
- *(sp + 1) = (png_byte)png_ptr->background.green;
- *(sp + 2) = (png_byte)png_ptr->background.blue;
- }
-
- else if (a < 0xff)
- {
- png_composite(*sp, *sp, a, png_ptr->background.red);
-
- png_composite(*(sp + 1), *(sp + 1), a,
- png_ptr->background.green);
-
- png_composite(*(sp + 2), *(sp + 2), a,
- png_ptr->background.blue);
- }
- }
- }
- }
- else /* if (row_info->bit_depth == 16) */
- {
-#ifdef PNG_READ_GAMMA_SUPPORTED
- if (gamma_16 != NULL && gamma_16_from_1 != NULL &&
- gamma_16_to_1 != NULL)
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 8)
- {
- png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
- << 8) + (png_uint_16)(*(sp + 7)));
-
- if (a == (png_uint_16)0xffff)
- {
- png_uint_16 v;
-
- v = gamma_16[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
-
- v = gamma_16[*(sp + 3) >> gamma_shift][*(sp + 2)];
- *(sp + 2) = (png_byte)((v >> 8) & 0xff);
- *(sp + 3) = (png_byte)(v & 0xff);
-
- v = gamma_16[*(sp + 5) >> gamma_shift][*(sp + 4)];
- *(sp + 4) = (png_byte)((v >> 8) & 0xff);
- *(sp + 5) = (png_byte)(v & 0xff);
- }
-
- else if (a == 0)
- {
- /* Background is already in screen gamma */
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
-
- else
- {
- png_uint_16 v, w;
-
- v = gamma_16_to_1[*(sp + 1) >> gamma_shift][*sp];
- png_composite_16(w, v, a, png_ptr->background_1.red);
- if (!optimize)
- w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >>
- 8];
- *sp = (png_byte)((w >> 8) & 0xff);
- *(sp + 1) = (png_byte)(w & 0xff);
-
- v = gamma_16_to_1[*(sp + 3) >> gamma_shift][*(sp + 2)];
- png_composite_16(w, v, a, png_ptr->background_1.green);
- if (!optimize)
- w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >>
- 8];
-
- *(sp + 2) = (png_byte)((w >> 8) & 0xff);
- *(sp + 3) = (png_byte)(w & 0xff);
-
- v = gamma_16_to_1[*(sp + 5) >> gamma_shift][*(sp + 4)];
- png_composite_16(w, v, a, png_ptr->background_1.blue);
- if (!optimize)
- w = gamma_16_from_1[((w&0xff) >> gamma_shift)][w >>
- 8];
-
- *(sp + 4) = (png_byte)((w >> 8) & 0xff);
- *(sp + 5) = (png_byte)(w & 0xff);
- }
- }
- }
-
- else
-#endif
- {
- sp = row;
- for (i = 0; i < row_width; i++, sp += 8)
- {
- png_uint_16 a = (png_uint_16)(((png_uint_16)(*(sp + 6))
- << 8) + (png_uint_16)(*(sp + 7)));
-
- if (a == 0)
- {
- *sp = (png_byte)((png_ptr->background.red >> 8) & 0xff);
- *(sp + 1) = (png_byte)(png_ptr->background.red & 0xff);
- *(sp + 2) = (png_byte)((png_ptr->background.green >> 8)
- & 0xff);
- *(sp + 3) = (png_byte)(png_ptr->background.green
- & 0xff);
- *(sp + 4) = (png_byte)((png_ptr->background.blue >> 8)
- & 0xff);
- *(sp + 5) = (png_byte)(png_ptr->background.blue & 0xff);
- }
-
- else if (a < 0xffff)
- {
- png_uint_16 v;
-
- png_uint_16 r = (png_uint_16)(((*sp) << 8) + *(sp + 1));
- png_uint_16 g = (png_uint_16)(((*(sp + 2)) << 8)
- + *(sp + 3));
- png_uint_16 b = (png_uint_16)(((*(sp + 4)) << 8)
- + *(sp + 5));
-
- png_composite_16(v, r, a, png_ptr->background.red);
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
-
- png_composite_16(v, g, a, png_ptr->background.green);
- *(sp + 2) = (png_byte)((v >> 8) & 0xff);
- *(sp + 3) = (png_byte)(v & 0xff);
-
- png_composite_16(v, b, a, png_ptr->background.blue);
- *(sp + 4) = (png_byte)((v >> 8) & 0xff);
- *(sp + 5) = (png_byte)(v & 0xff);
- }
- }
- }
- }
- break;
- }
-
- default:
- break;
- }
- }
-}
-#endif /* PNG_READ_BACKGROUND_SUPPORTED || PNG_READ_ALPHA_MODE_SUPPORTED */
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
-/* Gamma correct the image, avoiding the alpha channel. Make sure
- * you do this after you deal with the transparency issue on grayscale
- * or RGB images. If your bit depth is 8, use gamma_table, if it
- * is 16, use gamma_16_table and gamma_shift. Build these with
- * build_gamma_table().
- */
-void /* PRIVATE */
-png_do_gamma(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
-{
- png_const_bytep gamma_table = png_ptr->gamma_table;
- png_const_uint_16pp gamma_16_table = png_ptr->gamma_16_table;
- int gamma_shift = png_ptr->gamma_shift;
-
- png_bytep sp;
- png_uint_32 i;
- png_uint_32 row_width=row_info->width;
-
- png_debug(1, "in png_do_gamma");
-
- if (((row_info->bit_depth <= 8 && gamma_table != NULL) ||
- (row_info->bit_depth == 16 && gamma_16_table != NULL)))
- {
- switch (row_info->color_type)
- {
- case PNG_COLOR_TYPE_RGB:
- {
- if (row_info->bit_depth == 8)
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- *sp = gamma_table[*sp];
- sp++;
- *sp = gamma_table[*sp];
- sp++;
- *sp = gamma_table[*sp];
- sp++;
- }
- }
-
- else /* if (row_info->bit_depth == 16) */
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 v;
-
- v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 2;
-
- v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 2;
-
- v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 2;
- }
- }
- break;
- }
-
- case PNG_COLOR_TYPE_RGB_ALPHA:
- {
- if (row_info->bit_depth == 8)
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- *sp = gamma_table[*sp];
- sp++;
-
- *sp = gamma_table[*sp];
- sp++;
-
- *sp = gamma_table[*sp];
- sp++;
-
- sp++;
- }
- }
-
- else /* if (row_info->bit_depth == 16) */
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 2;
-
- v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 2;
-
- v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 4;
- }
- }
- break;
- }
-
- case PNG_COLOR_TYPE_GRAY_ALPHA:
- {
- if (row_info->bit_depth == 8)
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- *sp = gamma_table[*sp];
- sp += 2;
- }
- }
-
- else /* if (row_info->bit_depth == 16) */
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 4;
- }
- }
- break;
- }
-
- case PNG_COLOR_TYPE_GRAY:
- {
- if (row_info->bit_depth == 2)
- {
- sp = row;
- for (i = 0; i < row_width; i += 4)
- {
- int a = *sp & 0xc0;
- int b = *sp & 0x30;
- int c = *sp & 0x0c;
- int d = *sp & 0x03;
-
- *sp = (png_byte)(
- ((((int)gamma_table[a|(a>>2)|(a>>4)|(a>>6)]) ) & 0xc0)|
- ((((int)gamma_table[(b<<2)|b|(b>>2)|(b>>4)])>>2) & 0x30)|
- ((((int)gamma_table[(c<<4)|(c<<2)|c|(c>>2)])>>4) & 0x0c)|
- ((((int)gamma_table[(d<<6)|(d<<4)|(d<<2)|d])>>6) ));
- sp++;
- }
- }
-
- if (row_info->bit_depth == 4)
- {
- sp = row;
- for (i = 0; i < row_width; i += 2)
- {
- int msb = *sp & 0xf0;
- int lsb = *sp & 0x0f;
-
- *sp = (png_byte)((((int)gamma_table[msb | (msb >> 4)]) & 0xf0)
- | (((int)gamma_table[(lsb << 4) | lsb]) >> 4));
- sp++;
- }
- }
-
- else if (row_info->bit_depth == 8)
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- *sp = gamma_table[*sp];
- sp++;
- }
- }
-
- else if (row_info->bit_depth == 16)
- {
- sp = row;
- for (i = 0; i < row_width; i++)
- {
- png_uint_16 v = gamma_16_table[*(sp + 1) >> gamma_shift][*sp];
- *sp = (png_byte)((v >> 8) & 0xff);
- *(sp + 1) = (png_byte)(v & 0xff);
- sp += 2;
- }
- }
- break;
- }
-
- default:
- break;
- }
- }
-}
-#endif
-
-#ifdef PNG_READ_ALPHA_MODE_SUPPORTED
-/* Encode the alpha channel to the output gamma (the input channel is always
- * linear.) Called only with color types that have an alpha channel. Needs the
- * from_1 tables.
- */
-void /* PRIVATE */
-png_do_encode_alpha(png_row_infop row_info, png_bytep row, png_structrp png_ptr)
-{
- png_uint_32 row_width = row_info->width;
-
- png_debug(1, "in png_do_encode_alpha");
-
- if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- PNG_CONST png_bytep table = png_ptr->gamma_from_1;
-
- if (table != NULL)
- {
- PNG_CONST int step =
- (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 4 : 2;
-
- /* The alpha channel is the last component: */
- row += step - 1;
-
- for (; row_width > 0; --row_width, row += step)
- *row = table[*row];
-
- return;
- }
- }
-
- else if (row_info->bit_depth == 16)
- {
- PNG_CONST png_uint_16pp table = png_ptr->gamma_16_from_1;
- PNG_CONST int gamma_shift = png_ptr->gamma_shift;
-
- if (table != NULL)
- {
- PNG_CONST int step =
- (row_info->color_type & PNG_COLOR_MASK_COLOR) ? 8 : 4;
-
- /* The alpha channel is the last component: */
- row += step - 2;
-
- for (; row_width > 0; --row_width, row += step)
- {
- png_uint_16 v;
-
- v = table[*(row + 1) >> gamma_shift][*row];
- *row = (png_byte)((v >> 8) & 0xff);
- *(row + 1) = (png_byte)(v & 0xff);
- }
-
- return;
- }
- }
- }
-
- /* Only get to here if called with a weird row_info; no harm has been done,
- * so just issue a warning.
- */
- png_warning(png_ptr, "png_do_encode_alpha: unexpected call");
-}
-#endif
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
-/* Expands a palette row to an RGB or RGBA row depending
- * upon whether you supply trans and num_trans.
- */
-void /* PRIVATE */
-png_do_expand_palette(png_row_infop row_info, png_bytep row,
- png_const_colorp palette, png_const_bytep trans_alpha, int num_trans)
-{
- int shift, value;
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width=row_info->width;
-
- png_debug(1, "in png_do_expand_palette");
-
- if (row_info->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (row_info->bit_depth < 8)
- {
- switch (row_info->bit_depth)
- {
- case 1:
- {
- sp = row + (png_size_t)((row_width - 1) >> 3);
- dp = row + (png_size_t)row_width - 1;
- shift = 7 - (int)((row_width + 7) & 0x07);
- for (i = 0; i < row_width; i++)
- {
- if ((*sp >> shift) & 0x01)
- *dp = 1;
-
- else
- *dp = 0;
-
- if (shift == 7)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift++;
-
- dp--;
- }
- break;
- }
-
- case 2:
- {
- sp = row + (png_size_t)((row_width - 1) >> 2);
- dp = row + (png_size_t)row_width - 1;
- shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
- for (i = 0; i < row_width; i++)
- {
- value = (*sp >> shift) & 0x03;
- *dp = (png_byte)value;
- if (shift == 6)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift += 2;
-
- dp--;
- }
- break;
- }
-
- case 4:
- {
- sp = row + (png_size_t)((row_width - 1) >> 1);
- dp = row + (png_size_t)row_width - 1;
- shift = (int)((row_width & 0x01) << 2);
- for (i = 0; i < row_width; i++)
- {
- value = (*sp >> shift) & 0x0f;
- *dp = (png_byte)value;
- if (shift == 4)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift += 4;
-
- dp--;
- }
- break;
- }
-
- default:
- break;
- }
- row_info->bit_depth = 8;
- row_info->pixel_depth = 8;
- row_info->rowbytes = row_width;
- }
-
- if (row_info->bit_depth == 8)
- {
- {
- if (num_trans > 0)
- {
- sp = row + (png_size_t)row_width - 1;
- dp = row + (png_size_t)(row_width << 2) - 1;
-
- for (i = 0; i < row_width; i++)
- {
- if ((int)(*sp) >= num_trans)
- *dp-- = 0xff;
-
- else
- *dp-- = trans_alpha[*sp];
-
- *dp-- = palette[*sp].blue;
- *dp-- = palette[*sp].green;
- *dp-- = palette[*sp].red;
- sp--;
- }
- row_info->bit_depth = 8;
- row_info->pixel_depth = 32;
- row_info->rowbytes = row_width * 4;
- row_info->color_type = 6;
- row_info->channels = 4;
- }
-
- else
- {
- sp = row + (png_size_t)row_width - 1;
- dp = row + (png_size_t)(row_width * 3) - 1;
-
- for (i = 0; i < row_width; i++)
- {
- *dp-- = palette[*sp].blue;
- *dp-- = palette[*sp].green;
- *dp-- = palette[*sp].red;
- sp--;
- }
-
- row_info->bit_depth = 8;
- row_info->pixel_depth = 24;
- row_info->rowbytes = row_width * 3;
- row_info->color_type = 2;
- row_info->channels = 3;
- }
- }
- }
- }
-}
-
-/* If the bit depth < 8, it is expanded to 8. Also, if the already
- * expanded transparency value is supplied, an alpha channel is built.
- */
-void /* PRIVATE */
-png_do_expand(png_row_infop row_info, png_bytep row,
- png_const_color_16p trans_color)
-{
- int shift, value;
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width=row_info->width;
-
- png_debug(1, "in png_do_expand");
-
- {
- if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
- {
- unsigned int gray = trans_color ? trans_color->gray : 0;
-
- if (row_info->bit_depth < 8)
- {
- switch (row_info->bit_depth)
- {
- case 1:
- {
- gray = (gray & 0x01) * 0xff;
- sp = row + (png_size_t)((row_width - 1) >> 3);
- dp = row + (png_size_t)row_width - 1;
- shift = 7 - (int)((row_width + 7) & 0x07);
- for (i = 0; i < row_width; i++)
- {
- if ((*sp >> shift) & 0x01)
- *dp = 0xff;
-
- else
- *dp = 0;
-
- if (shift == 7)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift++;
-
- dp--;
- }
- break;
- }
-
- case 2:
- {
- gray = (gray & 0x03) * 0x55;
- sp = row + (png_size_t)((row_width - 1) >> 2);
- dp = row + (png_size_t)row_width - 1;
- shift = (int)((3 - ((row_width + 3) & 0x03)) << 1);
- for (i = 0; i < row_width; i++)
- {
- value = (*sp >> shift) & 0x03;
- *dp = (png_byte)(value | (value << 2) | (value << 4) |
- (value << 6));
- if (shift == 6)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift += 2;
-
- dp--;
- }
- break;
- }
-
- case 4:
- {
- gray = (gray & 0x0f) * 0x11;
- sp = row + (png_size_t)((row_width - 1) >> 1);
- dp = row + (png_size_t)row_width - 1;
- shift = (int)((1 - ((row_width + 1) & 0x01)) << 2);
- for (i = 0; i < row_width; i++)
- {
- value = (*sp >> shift) & 0x0f;
- *dp = (png_byte)(value | (value << 4));
- if (shift == 4)
- {
- shift = 0;
- sp--;
- }
-
- else
- shift = 4;
-
- dp--;
- }
- break;
- }
-
- default:
- break;
- }
-
- row_info->bit_depth = 8;
- row_info->pixel_depth = 8;
- row_info->rowbytes = row_width;
- }
-
- if (trans_color != NULL)
- {
- if (row_info->bit_depth == 8)
- {
- gray = gray & 0xff;
- sp = row + (png_size_t)row_width - 1;
- dp = row + (png_size_t)(row_width << 1) - 1;
-
- for (i = 0; i < row_width; i++)
- {
- if (*sp == gray)
- *dp-- = 0;
-
- else
- *dp-- = 0xff;
-
- *dp-- = *sp--;
- }
- }
-
- else if (row_info->bit_depth == 16)
- {
- unsigned int gray_high = (gray >> 8) & 0xff;
- unsigned int gray_low = gray & 0xff;
- sp = row + row_info->rowbytes - 1;
- dp = row + (row_info->rowbytes << 1) - 1;
- for (i = 0; i < row_width; i++)
- {
- if (*(sp - 1) == gray_high && *(sp) == gray_low)
- {
- *dp-- = 0;
- *dp-- = 0;
- }
-
- else
- {
- *dp-- = 0xff;
- *dp-- = 0xff;
- }
-
- *dp-- = *sp--;
- *dp-- = *sp--;
- }
- }
-
- row_info->color_type = PNG_COLOR_TYPE_GRAY_ALPHA;
- row_info->channels = 2;
- row_info->pixel_depth = (png_byte)(row_info->bit_depth << 1);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
- row_width);
- }
- }
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB && trans_color)
- {
- if (row_info->bit_depth == 8)
- {
- png_byte red = (png_byte)(trans_color->red & 0xff);
- png_byte green = (png_byte)(trans_color->green & 0xff);
- png_byte blue = (png_byte)(trans_color->blue & 0xff);
- sp = row + (png_size_t)row_info->rowbytes - 1;
- dp = row + (png_size_t)(row_width << 2) - 1;
- for (i = 0; i < row_width; i++)
- {
- if (*(sp - 2) == red && *(sp - 1) == green && *(sp) == blue)
- *dp-- = 0;
-
- else
- *dp-- = 0xff;
-
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- }
- }
- else if (row_info->bit_depth == 16)
- {
- png_byte red_high = (png_byte)((trans_color->red >> 8) & 0xff);
- png_byte green_high = (png_byte)((trans_color->green >> 8) & 0xff);
- png_byte blue_high = (png_byte)((trans_color->blue >> 8) & 0xff);
- png_byte red_low = (png_byte)(trans_color->red & 0xff);
- png_byte green_low = (png_byte)(trans_color->green & 0xff);
- png_byte blue_low = (png_byte)(trans_color->blue & 0xff);
- sp = row + row_info->rowbytes - 1;
- dp = row + (png_size_t)(row_width << 3) - 1;
- for (i = 0; i < row_width; i++)
- {
- if (*(sp - 5) == red_high &&
- *(sp - 4) == red_low &&
- *(sp - 3) == green_high &&
- *(sp - 2) == green_low &&
- *(sp - 1) == blue_high &&
- *(sp ) == blue_low)
- {
- *dp-- = 0;
- *dp-- = 0;
- }
-
- else
- {
- *dp-- = 0xff;
- *dp-- = 0xff;
- }
-
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- *dp-- = *sp--;
- }
- }
- row_info->color_type = PNG_COLOR_TYPE_RGB_ALPHA;
- row_info->channels = 4;
- row_info->pixel_depth = (png_byte)(row_info->bit_depth << 2);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
- }
- }
-}
-#endif
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
-/* If the bit depth is 8 and the color type is not a palette type expand the
- * whole row to 16 bits. Has no effect otherwise.
- */
-void /* PRIVATE */
-png_do_expand_16(png_row_infop row_info, png_bytep row)
-{
- if (row_info->bit_depth == 8 &&
- row_info->color_type != PNG_COLOR_TYPE_PALETTE)
- {
- /* The row have a sequence of bytes containing [0..255] and we need
- * to turn it into another row containing [0..65535], to do this we
- * calculate:
- *
- * (input / 255) * 65535
- *
- * Which happens to be exactly input * 257 and this can be achieved
- * simply by byte replication in place (copying backwards).
- */
- png_byte *sp = row + row_info->rowbytes; /* source, last byte + 1 */
- png_byte *dp = sp + row_info->rowbytes; /* destination, end + 1 */
- while (dp > sp)
- dp[-2] = dp[-1] = *--sp, dp -= 2;
-
- row_info->rowbytes *= 2;
- row_info->bit_depth = 16;
- row_info->pixel_depth = (png_byte)(row_info->channels * 16);
- }
-}
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-void /* PRIVATE */
-png_do_quantize(png_row_infop row_info, png_bytep row,
- png_const_bytep palette_lookup, png_const_bytep quantize_lookup)
-{
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width=row_info->width;
-
- png_debug(1, "in png_do_quantize");
-
- if (row_info->bit_depth == 8)
- {
- if (row_info->color_type == PNG_COLOR_TYPE_RGB && palette_lookup)
- {
- int r, g, b, p;
- sp = row;
- dp = row;
- for (i = 0; i < row_width; i++)
- {
- r = *sp++;
- g = *sp++;
- b = *sp++;
-
- /* This looks real messy, but the compiler will reduce
- * it down to a reasonable formula. For example, with
- * 5 bits per color, we get:
- * p = (((r >> 3) & 0x1f) << 10) |
- * (((g >> 3) & 0x1f) << 5) |
- * ((b >> 3) & 0x1f);
- */
- p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
- ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
- (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
- (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
- ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
- (PNG_QUANTIZE_BLUE_BITS)) |
- ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
- ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
-
- *dp++ = palette_lookup[p];
- }
-
- row_info->color_type = PNG_COLOR_TYPE_PALETTE;
- row_info->channels = 1;
- row_info->pixel_depth = row_info->bit_depth;
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA &&
- palette_lookup != NULL)
- {
- int r, g, b, p;
- sp = row;
- dp = row;
- for (i = 0; i < row_width; i++)
- {
- r = *sp++;
- g = *sp++;
- b = *sp++;
- sp++;
-
- p = (((r >> (8 - PNG_QUANTIZE_RED_BITS)) &
- ((1 << PNG_QUANTIZE_RED_BITS) - 1)) <<
- (PNG_QUANTIZE_GREEN_BITS + PNG_QUANTIZE_BLUE_BITS)) |
- (((g >> (8 - PNG_QUANTIZE_GREEN_BITS)) &
- ((1 << PNG_QUANTIZE_GREEN_BITS) - 1)) <<
- (PNG_QUANTIZE_BLUE_BITS)) |
- ((b >> (8 - PNG_QUANTIZE_BLUE_BITS)) &
- ((1 << PNG_QUANTIZE_BLUE_BITS) - 1));
-
- *dp++ = palette_lookup[p];
- }
-
- row_info->color_type = PNG_COLOR_TYPE_PALETTE;
- row_info->channels = 1;
- row_info->pixel_depth = row_info->bit_depth;
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, row_width);
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_PALETTE &&
- quantize_lookup)
- {
- sp = row;
-
- for (i = 0; i < row_width; i++, sp++)
- {
- *sp = quantize_lookup[*sp];
- }
- }
- }
-}
-#endif /* PNG_READ_QUANTIZE_SUPPORTED */
-#endif /* PNG_READ_TRANSFORMS_SUPPORTED */
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-/* Undoes intrapixel differencing */
-void /* PRIVATE */
-png_do_read_intrapixel(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_read_intrapixel");
-
- if (
- (row_info->color_type & PNG_COLOR_MASK_COLOR))
- {
- int bytes_per_pixel;
- png_uint_32 row_width = row_info->width;
-
- if (row_info->bit_depth == 8)
- {
- png_bytep rp;
- png_uint_32 i;
-
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- bytes_per_pixel = 3;
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- bytes_per_pixel = 4;
-
- else
- return;
-
- for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
- {
- *(rp) = (png_byte)((256 + *rp + *(rp + 1)) & 0xff);
- *(rp+2) = (png_byte)((256 + *(rp + 2) + *(rp + 1)) & 0xff);
- }
- }
- else if (row_info->bit_depth == 16)
- {
- png_bytep rp;
- png_uint_32 i;
-
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- bytes_per_pixel = 6;
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- bytes_per_pixel = 8;
-
- else
- return;
-
- for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
- {
- png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
- png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
- png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
- png_uint_32 red = (s0 + s1 + 65536) & 0xffff;
- png_uint_32 blue = (s2 + s1 + 65536) & 0xffff;
- *(rp ) = (png_byte)((red >> 8) & 0xff);
- *(rp + 1) = (png_byte)(red & 0xff);
- *(rp + 4) = (png_byte)((blue >> 8) & 0xff);
- *(rp + 5) = (png_byte)(blue & 0xff);
- }
- }
- }
-}
-#endif /* PNG_MNG_FEATURES_SUPPORTED */
-#endif /* PNG_READ_SUPPORTED */
+++ /dev/null
-
-/* pngrutil.c - utilities to read a PNG file
- *
- * Last changed in libpng 1.6.3 [July 18, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file contains routines that are only called from within
- * libpng itself during the course of reading an image.
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_READ_SUPPORTED
-
-png_uint_32 PNGAPI
-png_get_uint_31(png_const_structrp png_ptr, png_const_bytep buf)
-{
- png_uint_32 uval = png_get_uint_32(buf);
-
- if (uval > PNG_UINT_31_MAX)
- png_error(png_ptr, "PNG unsigned integer out of range");
-
- return (uval);
-}
-
-#if defined(PNG_READ_gAMA_SUPPORTED) || defined(PNG_READ_cHRM_SUPPORTED)
-/* The following is a variation on the above for use with the fixed
- * point values used for gAMA and cHRM. Instead of png_error it
- * issues a warning and returns (-1) - an invalid value because both
- * gAMA and cHRM use *unsigned* integers for fixed point values.
- */
-#define PNG_FIXED_ERROR (-1)
-
-static png_fixed_point /* PRIVATE */
-png_get_fixed_point(png_structrp png_ptr, png_const_bytep buf)
-{
- png_uint_32 uval = png_get_uint_32(buf);
-
- if (uval <= PNG_UINT_31_MAX)
- return (png_fixed_point)uval; /* known to be in range */
-
- /* The caller can turn off the warning by passing NULL. */
- if (png_ptr != NULL)
- png_warning(png_ptr, "PNG fixed point integer out of range");
-
- return PNG_FIXED_ERROR;
-}
-#endif
-
-#ifdef PNG_READ_INT_FUNCTIONS_SUPPORTED
-/* NOTE: the read macros will obscure these definitions, so that if
- * PNG_USE_READ_MACROS is set the library will not use them internally,
- * but the APIs will still be available externally.
- *
- * The parentheses around "PNGAPI function_name" in the following three
- * functions are necessary because they allow the macros to co-exist with
- * these (unused but exported) functions.
- */
-
-/* Grab an unsigned 32-bit integer from a buffer in big-endian format. */
-png_uint_32 (PNGAPI
-png_get_uint_32)(png_const_bytep buf)
-{
- png_uint_32 uval =
- ((png_uint_32)(*(buf )) << 24) +
- ((png_uint_32)(*(buf + 1)) << 16) +
- ((png_uint_32)(*(buf + 2)) << 8) +
- ((png_uint_32)(*(buf + 3)) ) ;
-
- return uval;
-}
-
-/* Grab a signed 32-bit integer from a buffer in big-endian format. The
- * data is stored in the PNG file in two's complement format and there
- * is no guarantee that a 'png_int_32' is exactly 32 bits, therefore
- * the following code does a two's complement to native conversion.
- */
-png_int_32 (PNGAPI
-png_get_int_32)(png_const_bytep buf)
-{
- png_uint_32 uval = png_get_uint_32(buf);
- if ((uval & 0x80000000) == 0) /* non-negative */
- return uval;
-
- uval = (uval ^ 0xffffffff) + 1; /* 2's complement: -x = ~x+1 */
- return -(png_int_32)uval;
-}
-
-/* Grab an unsigned 16-bit integer from a buffer in big-endian format. */
-png_uint_16 (PNGAPI
-png_get_uint_16)(png_const_bytep buf)
-{
- /* ANSI-C requires an int value to accomodate at least 16 bits so this
- * works and allows the compiler not to worry about possible narrowing
- * on 32 bit systems. (Pre-ANSI systems did not make integers smaller
- * than 16 bits either.)
- */
- unsigned int val =
- ((unsigned int)(*buf) << 8) +
- ((unsigned int)(*(buf + 1)));
-
- return (png_uint_16)val;
-}
-
-#endif /* PNG_READ_INT_FUNCTIONS_SUPPORTED */
-
-/* Read and check the PNG file signature */
-void /* PRIVATE */
-png_read_sig(png_structrp png_ptr, png_inforp info_ptr)
-{
- png_size_t num_checked, num_to_check;
-
- /* Exit if the user application does not expect a signature. */
- if (png_ptr->sig_bytes >= 8)
- return;
-
- num_checked = png_ptr->sig_bytes;
- num_to_check = 8 - num_checked;
-
-#ifdef PNG_IO_STATE_SUPPORTED
- png_ptr->io_state = PNG_IO_READING | PNG_IO_SIGNATURE;
-#endif
-
- /* The signature must be serialized in a single I/O call. */
- png_read_data(png_ptr, &(info_ptr->signature[num_checked]), num_to_check);
- png_ptr->sig_bytes = 8;
-
- if (png_sig_cmp(info_ptr->signature, num_checked, num_to_check))
- {
- if (num_checked < 4 &&
- png_sig_cmp(info_ptr->signature, num_checked, num_to_check - 4))
- png_error(png_ptr, "Not a PNG file");
- else
- png_error(png_ptr, "PNG file corrupted by ASCII conversion");
- }
- if (num_checked < 3)
- png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
-}
-
-/* Read the chunk header (length + type name).
- * Put the type name into png_ptr->chunk_name, and return the length.
- */
-png_uint_32 /* PRIVATE */
-png_read_chunk_header(png_structrp png_ptr)
-{
- png_byte buf[8];
- png_uint_32 length;
-
-#ifdef PNG_IO_STATE_SUPPORTED
- png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_HDR;
-#endif
-
- /* Read the length and the chunk name.
- * This must be performed in a single I/O call.
- */
- png_read_data(png_ptr, buf, 8);
- length = png_get_uint_31(png_ptr, buf);
-
- /* Put the chunk name into png_ptr->chunk_name. */
- png_ptr->chunk_name = PNG_CHUNK_FROM_STRING(buf+4);
-
- png_debug2(0, "Reading %lx chunk, length = %lu",
- (unsigned long)png_ptr->chunk_name, (unsigned long)length);
-
- /* Reset the crc and run it over the chunk name. */
- png_reset_crc(png_ptr);
- png_calculate_crc(png_ptr, buf + 4, 4);
-
- /* Check to see if chunk name is valid. */
- png_check_chunk_name(png_ptr, png_ptr->chunk_name);
-
-#ifdef PNG_IO_STATE_SUPPORTED
- png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_DATA;
-#endif
-
- return length;
-}
-
-/* Read data, and (optionally) run it through the CRC. */
-void /* PRIVATE */
-png_crc_read(png_structrp png_ptr, png_bytep buf, png_uint_32 length)
-{
- if (png_ptr == NULL)
- return;
-
- png_read_data(png_ptr, buf, length);
- png_calculate_crc(png_ptr, buf, length);
-}
-
-/* Optionally skip data and then check the CRC. Depending on whether we
- * are reading an ancillary or critical chunk, and how the program has set
- * things up, we may calculate the CRC on the data and print a message.
- * Returns '1' if there was a CRC error, '0' otherwise.
- */
-int /* PRIVATE */
-png_crc_finish(png_structrp png_ptr, png_uint_32 skip)
-{
- /* The size of the local buffer for inflate is a good guess as to a
- * reasonable size to use for buffering reads from the application.
- */
- while (skip > 0)
- {
- png_uint_32 len;
- png_byte tmpbuf[PNG_INFLATE_BUF_SIZE];
-
- len = (sizeof tmpbuf);
- if (len > skip)
- len = skip;
- skip -= len;
-
- png_crc_read(png_ptr, tmpbuf, len);
- }
-
- if (png_crc_error(png_ptr))
- {
- if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name) ?
- !(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN) :
- (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_USE))
- {
- png_chunk_warning(png_ptr, "CRC error");
- }
-
- else
- {
- png_chunk_benign_error(png_ptr, "CRC error");
- return (0);
- }
-
- return (1);
- }
-
- return (0);
-}
-
-/* Compare the CRC stored in the PNG file with that calculated by libpng from
- * the data it has read thus far.
- */
-int /* PRIVATE */
-png_crc_error(png_structrp png_ptr)
-{
- png_byte crc_bytes[4];
- png_uint_32 crc;
- int need_crc = 1;
-
- if (PNG_CHUNK_ANCILLARY(png_ptr->chunk_name))
- {
- if ((png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_MASK) ==
- (PNG_FLAG_CRC_ANCILLARY_USE | PNG_FLAG_CRC_ANCILLARY_NOWARN))
- need_crc = 0;
- }
-
- else /* critical */
- {
- if (png_ptr->flags & PNG_FLAG_CRC_CRITICAL_IGNORE)
- need_crc = 0;
- }
-
-#ifdef PNG_IO_STATE_SUPPORTED
- png_ptr->io_state = PNG_IO_READING | PNG_IO_CHUNK_CRC;
-#endif
-
- /* The chunk CRC must be serialized in a single I/O call. */
- png_read_data(png_ptr, crc_bytes, 4);
-
- if (need_crc)
- {
- crc = png_get_uint_32(crc_bytes);
- return ((int)(crc != png_ptr->crc));
- }
-
- else
- return (0);
-}
-
-/* Manage the read buffer; this simply reallocates the buffer if it is not small
- * enough (or if it is not allocated). The routine returns a pointer to the
- * buffer; if an error occurs and 'warn' is set the routine returns NULL, else
- * it will call png_error (via png_malloc) on failure. (warn == 2 means
- * 'silent').
- */
-static png_bytep
-png_read_buffer(png_structrp png_ptr, png_alloc_size_t new_size, int warn)
-{
- png_bytep buffer = png_ptr->read_buffer;
-
- if (buffer != NULL && new_size > png_ptr->read_buffer_size)
- {
- png_ptr->read_buffer = NULL;
- png_ptr->read_buffer = NULL;
- png_ptr->read_buffer_size = 0;
- png_free(png_ptr, buffer);
- buffer = NULL;
- }
-
- if (buffer == NULL)
- {
- buffer = png_voidcast(png_bytep, png_malloc_base(png_ptr, new_size));
-
- if (buffer != NULL)
- {
- png_ptr->read_buffer = buffer;
- png_ptr->read_buffer_size = new_size;
- }
-
- else if (warn < 2) /* else silent */
- {
-#ifdef PNG_WARNINGS_SUPPORTED
- if (warn)
- png_chunk_warning(png_ptr, "insufficient memory to read chunk");
- else
-#endif
- {
-#ifdef PNG_ERROR_TEXT_SUPPORTED
- png_chunk_error(png_ptr, "insufficient memory to read chunk");
-#endif
- }
- }
- }
-
- return buffer;
-}
-
-/* png_inflate_claim: claim the zstream for some nefarious purpose that involves
- * decompression. Returns Z_OK on success, else a zlib error code. It checks
- * the owner but, in final release builds, just issues a warning if some other
- * chunk apparently owns the stream. Prior to release it does a png_error.
- */
-static int
-png_inflate_claim(png_structrp png_ptr, png_uint_32 owner)
-{
- if (png_ptr->zowner != 0)
- {
- char msg[64];
-
- PNG_STRING_FROM_CHUNK(msg, png_ptr->zowner);
- /* So the message that results is "<chunk> using zstream"; this is an
- * internal error, but is very useful for debugging. i18n requirements
- * are minimal.
- */
- (void)png_safecat(msg, (sizeof msg), 4, " using zstream");
-# if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
- png_chunk_warning(png_ptr, msg);
- png_ptr->zowner = 0;
-# else
- png_chunk_error(png_ptr, msg);
-# endif
- }
-
- /* Implementation note: unlike 'png_deflate_claim' this internal function
- * does not take the size of the data as an argument. Some efficiency could
- * be gained by using this when it is known *if* the zlib stream itself does
- * not record the number; however, this is an illusion: the original writer
- * of the PNG may have selected a lower window size, and we really must
- * follow that because, for systems with with limited capabilities, we
- * would otherwise reject the application's attempts to use a smaller window
- * size (zlib doesn't have an interface to say "this or lower"!).
- *
- * inflateReset2 was added to zlib 1.2.4; before this the window could not be
- * reset, therefore it is necessary to always allocate the maximum window
- * size with earlier zlibs just in case later compressed chunks need it.
- */
- {
- int ret; /* zlib return code */
-# if PNG_ZLIB_VERNUM >= 0x1240
-
-# if defined(PNG_SET_OPTION_SUPPORTED) && \
- defined(PNG_MAXIMUM_INFLATE_WINDOW)
- int window_bits;
-
- if (((png_ptr->options >> PNG_MAXIMUM_INFLATE_WINDOW) & 3) ==
- PNG_OPTION_ON)
- window_bits = 15;
-
- else
- window_bits = 0;
-# else
-# define window_bits 0
-# endif
-# endif
-
- /* Set this for safety, just in case the previous owner left pointers to
- * memory allocations.
- */
- png_ptr->zstream.next_in = NULL;
- png_ptr->zstream.avail_in = 0;
- png_ptr->zstream.next_out = NULL;
- png_ptr->zstream.avail_out = 0;
-
- if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED)
- {
-# if PNG_ZLIB_VERNUM < 0x1240
- ret = inflateReset(&png_ptr->zstream);
-# else
- ret = inflateReset2(&png_ptr->zstream, window_bits);
-# endif
- }
-
- else
- {
-# if PNG_ZLIB_VERNUM < 0x1240
- ret = inflateInit(&png_ptr->zstream);
-# else
- ret = inflateInit2(&png_ptr->zstream, window_bits);
-# endif
-
- if (ret == Z_OK)
- png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
- }
-
- if (ret == Z_OK)
- png_ptr->zowner = owner;
-
- else
- png_zstream_error(png_ptr, ret);
-
- return ret;
- }
-
-# ifdef window_bits
-# undef window_bits
-# endif
-}
-
-#ifdef PNG_READ_COMPRESSED_TEXT_SUPPORTED
-/* png_inflate now returns zlib error codes including Z_OK and Z_STREAM_END to
- * allow the caller to do multiple calls if required. If the 'finish' flag is
- * set Z_FINISH will be passed to the final inflate() call and Z_STREAM_END must
- * be returned or there has been a problem, otherwise Z_SYNC_FLUSH is used and
- * Z_OK or Z_STREAM_END will be returned on success.
- *
- * The input and output sizes are updated to the actual amounts of data consumed
- * or written, not the amount available (as in a z_stream). The data pointers
- * are not changed, so the next input is (data+input_size) and the next
- * available output is (output+output_size).
- */
-static int
-png_inflate(png_structrp png_ptr, png_uint_32 owner, int finish,
- /* INPUT: */ png_const_bytep input, png_uint_32p input_size_ptr,
- /* OUTPUT: */ png_bytep output, png_alloc_size_t *output_size_ptr)
-{
- if (png_ptr->zowner == owner) /* Else not claimed */
- {
- int ret;
- png_alloc_size_t avail_out = *output_size_ptr;
- png_uint_32 avail_in = *input_size_ptr;
-
- /* zlib can't necessarily handle more than 65535 bytes at once (i.e. it
- * can't even necessarily handle 65536 bytes) because the type uInt is
- * "16 bits or more". Consequently it is necessary to chunk the input to
- * zlib. This code uses ZLIB_IO_MAX, from pngpriv.h, as the maximum (the
- * maximum value that can be stored in a uInt.) It is possible to set
- * ZLIB_IO_MAX to a lower value in pngpriv.h and this may sometimes have
- * a performance advantage, because it reduces the amount of data accessed
- * at each step and that may give the OS more time to page it in.
- */
- png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input);
- /* avail_in and avail_out are set below from 'size' */
- png_ptr->zstream.avail_in = 0;
- png_ptr->zstream.avail_out = 0;
-
- /* Read directly into the output if it is available (this is set to
- * a local buffer below if output is NULL).
- */
- if (output != NULL)
- png_ptr->zstream.next_out = output;
-
- do
- {
- uInt avail;
- Byte local_buffer[PNG_INFLATE_BUF_SIZE];
-
- /* zlib INPUT BUFFER */
- /* The setting of 'avail_in' used to be outside the loop; by setting it
- * inside it is possible to chunk the input to zlib and simply rely on
- * zlib to advance the 'next_in' pointer. This allows arbitrary
- * amounts of data to be passed through zlib at the unavoidable cost of
- * requiring a window save (memcpy of up to 32768 output bytes)
- * every ZLIB_IO_MAX input bytes.
- */
- avail_in += png_ptr->zstream.avail_in; /* not consumed last time */
-
- avail = ZLIB_IO_MAX;
-
- if (avail_in < avail)
- avail = (uInt)avail_in; /* safe: < than ZLIB_IO_MAX */
-
- avail_in -= avail;
- png_ptr->zstream.avail_in = avail;
-
- /* zlib OUTPUT BUFFER */
- avail_out += png_ptr->zstream.avail_out; /* not written last time */
-
- avail = ZLIB_IO_MAX; /* maximum zlib can process */
-
- if (output == NULL)
- {
- /* Reset the output buffer each time round if output is NULL and
- * make available the full buffer, up to 'remaining_space'
- */
- png_ptr->zstream.next_out = local_buffer;
- if ((sizeof local_buffer) < avail)
- avail = (sizeof local_buffer);
- }
-
- if (avail_out < avail)
- avail = (uInt)avail_out; /* safe: < ZLIB_IO_MAX */
-
- png_ptr->zstream.avail_out = avail;
- avail_out -= avail;
-
- /* zlib inflate call */
- /* In fact 'avail_out' may be 0 at this point, that happens at the end
- * of the read when the final LZ end code was not passed at the end of
- * the previous chunk of input data. Tell zlib if we have reached the
- * end of the output buffer.
- */
- ret = inflate(&png_ptr->zstream, avail_out > 0 ? Z_NO_FLUSH :
- (finish ? Z_FINISH : Z_SYNC_FLUSH));
- } while (ret == Z_OK);
-
- /* For safety kill the local buffer pointer now */
- if (output == NULL)
- png_ptr->zstream.next_out = NULL;
-
- /* Claw back the 'size' and 'remaining_space' byte counts. */
- avail_in += png_ptr->zstream.avail_in;
- avail_out += png_ptr->zstream.avail_out;
-
- /* Update the input and output sizes; the updated values are the amount
- * consumed or written, effectively the inverse of what zlib uses.
- */
- if (avail_out > 0)
- *output_size_ptr -= avail_out;
-
- if (avail_in > 0)
- *input_size_ptr -= avail_in;
-
- /* Ensure png_ptr->zstream.msg is set (even in the success case!) */
- png_zstream_error(png_ptr, ret);
- return ret;
- }
-
- else
- {
- /* This is a bad internal error. The recovery assigns to the zstream msg
- * pointer, which is not owned by the caller, but this is safe; it's only
- * used on errors!
- */
- png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed");
- return Z_STREAM_ERROR;
- }
-}
-
-/*
- * Decompress trailing data in a chunk. The assumption is that read_buffer
- * points at an allocated area holding the contents of a chunk with a
- * trailing compressed part. What we get back is an allocated area
- * holding the original prefix part and an uncompressed version of the
- * trailing part (the malloc area passed in is freed).
- */
-static int
-png_decompress_chunk(png_structrp png_ptr,
- png_uint_32 chunklength, png_uint_32 prefix_size,
- png_alloc_size_t *newlength /* must be initialized to the maximum! */,
- int terminate /*add a '\0' to the end of the uncompressed data*/)
-{
- /* TODO: implement different limits for different types of chunk.
- *
- * The caller supplies *newlength set to the maximum length of the
- * uncompressed data, but this routine allocates space for the prefix and
- * maybe a '\0' terminator too. We have to assume that 'prefix_size' is
- * limited only by the maximum chunk size.
- */
- png_alloc_size_t limit = PNG_SIZE_MAX;
-
-# ifdef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
- if (png_ptr->user_chunk_malloc_max > 0 &&
- png_ptr->user_chunk_malloc_max < limit)
- limit = png_ptr->user_chunk_malloc_max;
-# elif PNG_USER_CHUNK_MALLOC_MAX > 0
- if (PNG_USER_CHUNK_MALLOC_MAX < limit)
- limit = PNG_USER_CHUNK_MALLOC_MAX;
-# endif
-
- if (limit >= prefix_size + (terminate != 0))
- {
- int ret;
-
- limit -= prefix_size + (terminate != 0);
-
- if (limit < *newlength)
- *newlength = limit;
-
- /* Now try to claim the stream. */
- ret = png_inflate_claim(png_ptr, png_ptr->chunk_name);
-
- if (ret == Z_OK)
- {
- png_uint_32 lzsize = chunklength - prefix_size;
-
- ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
- /* input: */ png_ptr->read_buffer + prefix_size, &lzsize,
- /* output: */ NULL, newlength);
-
- if (ret == Z_STREAM_END)
- {
- /* Use 'inflateReset' here, not 'inflateReset2' because this
- * preserves the previously decided window size (otherwise it would
- * be necessary to store the previous window size.) In practice
- * this doesn't matter anyway, because png_inflate will call inflate
- * with Z_FINISH in almost all cases, so the window will not be
- * maintained.
- */
- if (inflateReset(&png_ptr->zstream) == Z_OK)
- {
- /* Because of the limit checks above we know that the new,
- * expanded, size will fit in a size_t (let alone an
- * png_alloc_size_t). Use png_malloc_base here to avoid an
- * extra OOM message.
- */
- png_alloc_size_t new_size = *newlength;
- png_alloc_size_t buffer_size = prefix_size + new_size +
- (terminate != 0);
- png_bytep text = png_voidcast(png_bytep, png_malloc_base(png_ptr,
- buffer_size));
-
- if (text != NULL)
- {
- ret = png_inflate(png_ptr, png_ptr->chunk_name, 1/*finish*/,
- png_ptr->read_buffer + prefix_size, &lzsize,
- text + prefix_size, newlength);
-
- if (ret == Z_STREAM_END)
- {
- if (new_size == *newlength)
- {
- if (terminate)
- text[prefix_size + *newlength] = 0;
-
- if (prefix_size > 0)
- memcpy(text, png_ptr->read_buffer, prefix_size);
-
- {
- png_bytep old_ptr = png_ptr->read_buffer;
-
- png_ptr->read_buffer = text;
- png_ptr->read_buffer_size = buffer_size;
- text = old_ptr; /* freed below */
- }
- }
-
- else
- {
- /* The size changed on the second read, there can be no
- * guarantee that anything is correct at this point.
- * The 'msg' pointer has been set to "unexpected end of
- * LZ stream", which is fine, but return an error code
- * that the caller won't accept.
- */
- ret = PNG_UNEXPECTED_ZLIB_RETURN;
- }
- }
-
- else if (ret == Z_OK)
- ret = PNG_UNEXPECTED_ZLIB_RETURN; /* for safety */
-
- /* Free the text pointer (this is the old read_buffer on
- * success)
- */
- png_free(png_ptr, text);
-
- /* This really is very benign, but it's still an error because
- * the extra space may otherwise be used as a Trojan Horse.
- */
- if (ret == Z_STREAM_END &&
- chunklength - prefix_size != lzsize)
- png_chunk_benign_error(png_ptr, "extra compressed data");
- }
-
- else
- {
- /* Out of memory allocating the buffer */
- ret = Z_MEM_ERROR;
- png_zstream_error(png_ptr, Z_MEM_ERROR);
- }
- }
-
- else
- {
- /* inflateReset failed, store the error message */
- png_zstream_error(png_ptr, ret);
-
- if (ret == Z_STREAM_END)
- ret = PNG_UNEXPECTED_ZLIB_RETURN;
- }
- }
-
- else if (ret == Z_OK)
- ret = PNG_UNEXPECTED_ZLIB_RETURN;
-
- /* Release the claimed stream */
- png_ptr->zowner = 0;
- }
-
- else /* the claim failed */ if (ret == Z_STREAM_END) /* impossible! */
- ret = PNG_UNEXPECTED_ZLIB_RETURN;
-
- return ret;
- }
-
- else
- {
- /* Application/configuration limits exceeded */
- png_zstream_error(png_ptr, Z_MEM_ERROR);
- return Z_MEM_ERROR;
- }
-}
-#endif /* PNG_READ_COMPRESSED_TEXT_SUPPORTED */
-
-#ifdef PNG_READ_iCCP_SUPPORTED
-/* Perform a partial read and decompress, producing 'avail_out' bytes and
- * reading from the current chunk as required.
- */
-static int
-png_inflate_read(png_structrp png_ptr, png_bytep read_buffer, uInt read_size,
- png_uint_32p chunk_bytes, png_bytep next_out, png_alloc_size_t *out_size,
- int finish)
-{
- if (png_ptr->zowner == png_ptr->chunk_name)
- {
- int ret;
-
- /* next_in and avail_in must have been initialized by the caller. */
- png_ptr->zstream.next_out = next_out;
- png_ptr->zstream.avail_out = 0; /* set in the loop */
-
- do
- {
- if (png_ptr->zstream.avail_in == 0)
- {
- if (read_size > *chunk_bytes)
- read_size = (uInt)*chunk_bytes;
- *chunk_bytes -= read_size;
-
- if (read_size > 0)
- png_crc_read(png_ptr, read_buffer, read_size);
-
- png_ptr->zstream.next_in = read_buffer;
- png_ptr->zstream.avail_in = read_size;
- }
-
- if (png_ptr->zstream.avail_out == 0)
- {
- uInt avail = ZLIB_IO_MAX;
- if (avail > *out_size)
- avail = (uInt)*out_size;
- *out_size -= avail;
-
- png_ptr->zstream.avail_out = avail;
- }
-
- /* Use Z_SYNC_FLUSH when there is no more chunk data to ensure that all
- * the available output is produced; this allows reading of truncated
- * streams.
- */
- ret = inflate(&png_ptr->zstream,
- *chunk_bytes > 0 ? Z_NO_FLUSH : (finish ? Z_FINISH : Z_SYNC_FLUSH));
- }
- while (ret == Z_OK && (*out_size > 0 || png_ptr->zstream.avail_out > 0));
-
- *out_size += png_ptr->zstream.avail_out;
- png_ptr->zstream.avail_out = 0; /* Should not be required, but is safe */
-
- /* Ensure the error message pointer is always set: */
- png_zstream_error(png_ptr, ret);
- return ret;
- }
-
- else
- {
- png_ptr->zstream.msg = PNGZ_MSG_CAST("zstream unclaimed");
- return Z_STREAM_ERROR;
- }
-}
-#endif
-
-/* Read and check the IDHR chunk */
-void /* PRIVATE */
-png_handle_IHDR(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte buf[13];
- png_uint_32 width, height;
- int bit_depth, color_type, compression_type, filter_type;
- int interlace_type;
-
- png_debug(1, "in png_handle_IHDR");
-
- if (png_ptr->mode & PNG_HAVE_IHDR)
- png_chunk_error(png_ptr, "out of place");
-
- /* Check the length */
- if (length != 13)
- png_chunk_error(png_ptr, "invalid");
-
- png_ptr->mode |= PNG_HAVE_IHDR;
-
- png_crc_read(png_ptr, buf, 13);
- png_crc_finish(png_ptr, 0);
-
- width = png_get_uint_31(png_ptr, buf);
- height = png_get_uint_31(png_ptr, buf + 4);
- bit_depth = buf[8];
- color_type = buf[9];
- compression_type = buf[10];
- filter_type = buf[11];
- interlace_type = buf[12];
-
- /* Set internal variables */
- png_ptr->width = width;
- png_ptr->height = height;
- png_ptr->bit_depth = (png_byte)bit_depth;
- png_ptr->interlaced = (png_byte)interlace_type;
- png_ptr->color_type = (png_byte)color_type;
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- png_ptr->filter_type = (png_byte)filter_type;
-#endif
- png_ptr->compression_type = (png_byte)compression_type;
-
- /* Find number of channels */
- switch (png_ptr->color_type)
- {
- default: /* invalid, png_set_IHDR calls png_error */
- case PNG_COLOR_TYPE_GRAY:
- case PNG_COLOR_TYPE_PALETTE:
- png_ptr->channels = 1;
- break;
-
- case PNG_COLOR_TYPE_RGB:
- png_ptr->channels = 3;
- break;
-
- case PNG_COLOR_TYPE_GRAY_ALPHA:
- png_ptr->channels = 2;
- break;
-
- case PNG_COLOR_TYPE_RGB_ALPHA:
- png_ptr->channels = 4;
- break;
- }
-
- /* Set up other useful info */
- png_ptr->pixel_depth = (png_byte)(png_ptr->bit_depth *
- png_ptr->channels);
- png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->width);
- png_debug1(3, "bit_depth = %d", png_ptr->bit_depth);
- png_debug1(3, "channels = %d", png_ptr->channels);
- png_debug1(3, "rowbytes = %lu", (unsigned long)png_ptr->rowbytes);
- png_set_IHDR(png_ptr, info_ptr, width, height, bit_depth,
- color_type, interlace_type, compression_type, filter_type);
-}
-
-/* Read and check the palette */
-void /* PRIVATE */
-png_handle_PLTE(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_color palette[PNG_MAX_PALETTE_LENGTH];
- int num, i;
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
- png_colorp pal_ptr;
-#endif
-
- png_debug(1, "in png_handle_PLTE");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- /* Moved to before the 'after IDAT' check below because otherwise duplicate
- * PLTE chunks are potentially ignored (the spec says there shall not be more
- * than one PLTE, the error is not treated as benign, so this check trumps
- * the requirement that PLTE appears before IDAT.)
- */
- else if (png_ptr->mode & PNG_HAVE_PLTE)
- png_chunk_error(png_ptr, "duplicate");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- /* This is benign because the non-benign error happened before, when an
- * IDAT was encountered in a color-mapped image with no PLTE.
- */
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- png_ptr->mode |= PNG_HAVE_PLTE;
-
- if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "ignored in grayscale PNG");
- return;
- }
-
-#ifndef PNG_READ_OPT_PLTE_SUPPORTED
- if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
- {
- png_crc_finish(png_ptr, length);
- return;
- }
-#endif
-
- if (length > 3*PNG_MAX_PALETTE_LENGTH || length % 3)
- {
- png_crc_finish(png_ptr, length);
-
- if (png_ptr->color_type != PNG_COLOR_TYPE_PALETTE)
- png_chunk_benign_error(png_ptr, "invalid");
-
- else
- png_chunk_error(png_ptr, "invalid");
-
- return;
- }
-
- /* The cast is safe because 'length' is less than 3*PNG_MAX_PALETTE_LENGTH */
- num = (int)length / 3;
-
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
- for (i = 0, pal_ptr = palette; i < num; i++, pal_ptr++)
- {
- png_byte buf[3];
-
- png_crc_read(png_ptr, buf, 3);
- pal_ptr->red = buf[0];
- pal_ptr->green = buf[1];
- pal_ptr->blue = buf[2];
- }
-#else
- for (i = 0; i < num; i++)
- {
- png_byte buf[3];
-
- png_crc_read(png_ptr, buf, 3);
- /* Don't depend upon png_color being any order */
- palette[i].red = buf[0];
- palette[i].green = buf[1];
- palette[i].blue = buf[2];
- }
-#endif
-
- /* If we actually need the PLTE chunk (ie for a paletted image), we do
- * whatever the normal CRC configuration tells us. However, if we
- * have an RGB image, the PLTE can be considered ancillary, so
- * we will act as though it is.
- */
-#ifndef PNG_READ_OPT_PLTE_SUPPORTED
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
-#endif
- {
- png_crc_finish(png_ptr, 0);
- }
-
-#ifndef PNG_READ_OPT_PLTE_SUPPORTED
- else if (png_crc_error(png_ptr)) /* Only if we have a CRC error */
- {
- /* If we don't want to use the data from an ancillary chunk,
- * we have two options: an error abort, or a warning and we
- * ignore the data in this chunk (which should be OK, since
- * it's considered ancillary for a RGB or RGBA image).
- *
- * IMPLEMENTATION NOTE: this is only here because png_crc_finish uses the
- * chunk type to determine whether to check the ancillary or the critical
- * flags.
- */
- if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_USE))
- {
- if (png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN)
- {
- png_chunk_benign_error(png_ptr, "CRC error");
- }
-
- else
- {
- png_chunk_warning(png_ptr, "CRC error");
- return;
- }
- }
-
- /* Otherwise, we (optionally) emit a warning and use the chunk. */
- else if (!(png_ptr->flags & PNG_FLAG_CRC_ANCILLARY_NOWARN))
- {
- png_chunk_warning(png_ptr, "CRC error");
- }
- }
-#endif
-
- /* TODO: png_set_PLTE has the side effect of setting png_ptr->palette to its
- * own copy of the palette. This has the side effect that when png_start_row
- * is called (this happens after any call to png_read_update_info) the
- * info_ptr palette gets changed. This is extremely unexpected and
- * confusing.
- *
- * Fix this by not sharing the palette in this way.
- */
- png_set_PLTE(png_ptr, info_ptr, palette, num);
-
- /* The three chunks, bKGD, hIST and tRNS *must* appear after PLTE and before
- * IDAT. Prior to 1.6.0 this was not checked; instead the code merely
- * checked the apparent validity of a tRNS chunk inserted before PLTE on a
- * palette PNG. 1.6.0 attempts to rigorously follow the standard and
- * therefore does a benign error if the erroneous condition is detected *and*
- * cancels the tRNS if the benign error returns. The alternative is to
- * amend the standard since it would be rather hypocritical of the standards
- * maintainers to ignore it.
- */
-#ifdef PNG_READ_tRNS_SUPPORTED
- if (png_ptr->num_trans > 0 ||
- (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS) != 0))
- {
- /* Cancel this because otherwise it would be used if the transforms
- * require it. Don't cancel the 'valid' flag because this would prevent
- * detection of duplicate chunks.
- */
- png_ptr->num_trans = 0;
-
- if (info_ptr != NULL)
- info_ptr->num_trans = 0;
-
- png_chunk_benign_error(png_ptr, "tRNS must be after");
- }
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
- if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST) != 0)
- png_chunk_benign_error(png_ptr, "hIST must be after");
-#endif
-
-#ifdef PNG_READ_bKGD_SUPPORTED
- if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD) != 0)
- png_chunk_benign_error(png_ptr, "bKGD must be after");
-#endif
-}
-
-void /* PRIVATE */
-png_handle_IEND(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_debug(1, "in png_handle_IEND");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR) || !(png_ptr->mode & PNG_HAVE_IDAT))
- png_chunk_error(png_ptr, "out of place");
-
- png_ptr->mode |= (PNG_AFTER_IDAT | PNG_HAVE_IEND);
-
- png_crc_finish(png_ptr, length);
-
- if (length != 0)
- png_chunk_benign_error(png_ptr, "invalid");
-
- PNG_UNUSED(info_ptr)
-}
-
-#ifdef PNG_READ_gAMA_SUPPORTED
-void /* PRIVATE */
-png_handle_gAMA(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_fixed_point igamma;
- png_byte buf[4];
-
- png_debug(1, "in png_handle_gAMA");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- if (length != 4)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, 4);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- igamma = png_get_fixed_point(NULL, buf);
-
- png_colorspace_set_gamma(png_ptr, &png_ptr->colorspace, igamma);
- png_colorspace_sync(png_ptr, info_ptr);
-}
-#endif
-
-#ifdef PNG_READ_sBIT_SUPPORTED
-void /* PRIVATE */
-png_handle_sBIT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- unsigned int truelen;
- png_byte buf[4];
-
- png_debug(1, "in png_handle_sBIT");
-
- buf[0] = buf[1] = buf[2] = buf[3] = 0;
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sBIT))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- truelen = 3;
-
- else
- truelen = png_ptr->channels;
-
- if (length != truelen || length > 4)
- {
- png_chunk_benign_error(png_ptr, "invalid");
- png_crc_finish(png_ptr, length);
- return;
- }
-
- png_crc_read(png_ptr, buf, truelen);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
- {
- png_ptr->sig_bit.red = buf[0];
- png_ptr->sig_bit.green = buf[1];
- png_ptr->sig_bit.blue = buf[2];
- png_ptr->sig_bit.alpha = buf[3];
- }
-
- else
- {
- png_ptr->sig_bit.gray = buf[0];
- png_ptr->sig_bit.red = buf[0];
- png_ptr->sig_bit.green = buf[0];
- png_ptr->sig_bit.blue = buf[0];
- png_ptr->sig_bit.alpha = buf[1];
- }
-
- png_set_sBIT(png_ptr, info_ptr, &(png_ptr->sig_bit));
-}
-#endif
-
-#ifdef PNG_READ_cHRM_SUPPORTED
-void /* PRIVATE */
-png_handle_cHRM(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte buf[32];
- png_xy xy;
-
- png_debug(1, "in png_handle_cHRM");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- if (length != 32)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, 32);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- xy.whitex = png_get_fixed_point(NULL, buf);
- xy.whitey = png_get_fixed_point(NULL, buf + 4);
- xy.redx = png_get_fixed_point(NULL, buf + 8);
- xy.redy = png_get_fixed_point(NULL, buf + 12);
- xy.greenx = png_get_fixed_point(NULL, buf + 16);
- xy.greeny = png_get_fixed_point(NULL, buf + 20);
- xy.bluex = png_get_fixed_point(NULL, buf + 24);
- xy.bluey = png_get_fixed_point(NULL, buf + 28);
-
- if (xy.whitex == PNG_FIXED_ERROR ||
- xy.whitey == PNG_FIXED_ERROR ||
- xy.redx == PNG_FIXED_ERROR ||
- xy.redy == PNG_FIXED_ERROR ||
- xy.greenx == PNG_FIXED_ERROR ||
- xy.greeny == PNG_FIXED_ERROR ||
- xy.bluex == PNG_FIXED_ERROR ||
- xy.bluey == PNG_FIXED_ERROR)
- {
- png_chunk_benign_error(png_ptr, "invalid values");
- return;
- }
-
- /* If a colorspace error has already been output skip this chunk */
- if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
- return;
-
- if (png_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM)
- {
- png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
- png_colorspace_sync(png_ptr, info_ptr);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- png_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
- (void)png_colorspace_set_chromaticities(png_ptr, &png_ptr->colorspace, &xy,
- 1/*prefer cHRM values*/);
- png_colorspace_sync(png_ptr, info_ptr);
-}
-#endif
-
-#ifdef PNG_READ_sRGB_SUPPORTED
-void /* PRIVATE */
-png_handle_sRGB(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte intent;
-
- png_debug(1, "in png_handle_sRGB");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- if (length != 1)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, &intent, 1);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- /* If a colorspace error has already been output skip this chunk */
- if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
- return;
-
- /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect
- * this.
- */
- if (png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT)
- {
- png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
- png_colorspace_sync(png_ptr, info_ptr);
- png_chunk_benign_error(png_ptr, "too many profiles");
- return;
- }
-
- (void)png_colorspace_set_sRGB(png_ptr, &png_ptr->colorspace, intent);
- png_colorspace_sync(png_ptr, info_ptr);
-}
-#endif /* PNG_READ_sRGB_SUPPORTED */
-
-#ifdef PNG_READ_iCCP_SUPPORTED
-void /* PRIVATE */
-png_handle_iCCP(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-/* Note: this does not properly handle profiles that are > 64K under DOS */
-{
- png_const_charp errmsg = NULL; /* error message output, or no error */
- int finished = 0; /* crc checked */
-
- png_debug(1, "in png_handle_iCCP");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & (PNG_HAVE_IDAT|PNG_HAVE_PLTE))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- /* Consistent with all the above colorspace handling an obviously *invalid*
- * chunk is just ignored, so does not invalidate the color space. An
- * alternative is to set the 'invalid' flags at the start of this routine
- * and only clear them in they were not set before and all the tests pass.
- * The minimum 'deflate' stream is assumed to be just the 2 byte header and 4
- * byte checksum. The keyword must be one character and there is a
- * terminator (0) byte and the compression method.
- */
- if (length < 9)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "too short");
- return;
- }
-
- /* If a colorspace error has already been output skip this chunk */
- if (png_ptr->colorspace.flags & PNG_COLORSPACE_INVALID)
- {
- png_crc_finish(png_ptr, length);
- return;
- }
-
- /* Only one sRGB or iCCP chunk is allowed, use the HAVE_INTENT flag to detect
- * this.
- */
- if ((png_ptr->colorspace.flags & PNG_COLORSPACE_HAVE_INTENT) == 0)
- {
- uInt read_length, keyword_length;
- char keyword[81];
-
- /* Find the keyword; the keyword plus separator and compression method
- * bytes can be at most 81 characters long.
- */
- read_length = 81; /* maximum */
- if (read_length > length)
- read_length = (uInt)length;
-
- png_crc_read(png_ptr, (png_bytep)keyword, read_length);
- length -= read_length;
-
- keyword_length = 0;
- while (keyword_length < 80 && keyword_length < read_length &&
- keyword[keyword_length] != 0)
- ++keyword_length;
-
- /* TODO: make the keyword checking common */
- if (keyword_length >= 1 && keyword_length <= 79)
- {
- /* We only understand '0' compression - deflate - so if we get a
- * different value we can't safely decode the chunk.
- */
- if (keyword_length+1 < read_length &&
- keyword[keyword_length+1] == PNG_COMPRESSION_TYPE_BASE)
- {
- read_length -= keyword_length+2;
-
- if (png_inflate_claim(png_ptr, png_iCCP) == Z_OK)
- {
- Byte profile_header[132];
- Byte local_buffer[PNG_INFLATE_BUF_SIZE];
- png_alloc_size_t size = (sizeof profile_header);
-
- png_ptr->zstream.next_in = (Bytef*)keyword + (keyword_length+2);
- png_ptr->zstream.avail_in = read_length;
- (void)png_inflate_read(png_ptr, local_buffer,
- (sizeof local_buffer), &length, profile_header, &size,
- 0/*finish: don't, because the output is too small*/);
-
- if (size == 0)
- {
- /* We have the ICC profile header; do the basic header checks.
- */
- const png_uint_32 profile_length =
- png_get_uint_32(profile_header);
-
- if (png_icc_check_length(png_ptr, &png_ptr->colorspace,
- keyword, profile_length))
- {
- /* The length is apparently ok, so we can check the 132
- * byte header.
- */
- if (png_icc_check_header(png_ptr, &png_ptr->colorspace,
- keyword, profile_length, profile_header,
- png_ptr->color_type))
- {
- /* Now read the tag table; a variable size buffer is
- * needed at this point, allocate one for the whole
- * profile. The header check has already validated
- * that none of these stuff will overflow.
- */
- const png_uint_32 tag_count = png_get_uint_32(
- profile_header+128);
- png_bytep profile = png_read_buffer(png_ptr,
- profile_length, 2/*silent*/);
-
- if (profile != NULL)
- {
- memcpy(profile, profile_header,
- (sizeof profile_header));
-
- size = 12 * tag_count;
-
- (void)png_inflate_read(png_ptr, local_buffer,
- (sizeof local_buffer), &length,
- profile + (sizeof profile_header), &size, 0);
-
- /* Still expect a a buffer error because we expect
- * there to be some tag data!
- */
- if (size == 0)
- {
- if (png_icc_check_tag_table(png_ptr,
- &png_ptr->colorspace, keyword, profile_length,
- profile))
- {
- /* The profile has been validated for basic
- * security issues, so read the whole thing in.
- */
- size = profile_length - (sizeof profile_header)
- - 12 * tag_count;
-
- (void)png_inflate_read(png_ptr, local_buffer,
- (sizeof local_buffer), &length,
- profile + (sizeof profile_header) +
- 12 * tag_count, &size, 1/*finish*/);
-
- if (length > 0 && !(png_ptr->flags &
- PNG_FLAG_BENIGN_ERRORS_WARN))
- errmsg = "extra compressed data";
-
- /* But otherwise allow extra data: */
- else if (size == 0)
- {
- if (length > 0)
- {
- /* This can be handled completely, so
- * keep going.
- */
- png_chunk_warning(png_ptr,
- "extra compressed data");
- }
-
- png_crc_finish(png_ptr, length);
- finished = 1;
-
-# ifdef PNG_sRGB_SUPPORTED
- /* Check for a match against sRGB */
- png_icc_set_sRGB(png_ptr,
- &png_ptr->colorspace, profile,
- png_ptr->zstream.adler);
-# endif
-
- /* Steal the profile for info_ptr. */
- if (info_ptr != NULL)
- {
- png_free_data(png_ptr, info_ptr,
- PNG_FREE_ICCP, 0);
-
- info_ptr->iccp_name = png_voidcast(char*,
- png_malloc_base(png_ptr,
- keyword_length+1));
- if (info_ptr->iccp_name != NULL)
- {
- memcpy(info_ptr->iccp_name, keyword,
- keyword_length+1);
- info_ptr->iccp_proflen =
- profile_length;
- info_ptr->iccp_profile = profile;
- png_ptr->read_buffer = NULL; /*steal*/
- info_ptr->free_me |= PNG_FREE_ICCP;
- info_ptr->valid |= PNG_INFO_iCCP;
- }
-
- else
- {
- png_ptr->colorspace.flags |=
- PNG_COLORSPACE_INVALID;
- errmsg = "out of memory";
- }
- }
-
- /* else the profile remains in the read
- * buffer which gets reused for subsequent
- * chunks.
- */
-
- if (info_ptr != NULL)
- png_colorspace_sync(png_ptr, info_ptr);
-
- if (errmsg == NULL)
- {
- png_ptr->zowner = 0;
- return;
- }
- }
-
- else if (size > 0)
- errmsg = "truncated";
-
- else
- errmsg = png_ptr->zstream.msg;
- }
-
- /* else png_icc_check_tag_table output an error */
- }
-
- else /* profile truncated */
- errmsg = png_ptr->zstream.msg;
- }
-
- else
- errmsg = "out of memory";
- }
-
- /* else png_icc_check_header output an error */
- }
-
- /* else png_icc_check_length output an error */
- }
-
- else /* profile truncated */
- errmsg = png_ptr->zstream.msg;
-
- /* Release the stream */
- png_ptr->zowner = 0;
- }
-
- else /* png_inflate_claim failed */
- errmsg = png_ptr->zstream.msg;
- }
-
- else
- errmsg = "bad compression method"; /* or missing */
- }
-
- else
- errmsg = "bad keyword";
- }
-
- else
- errmsg = "too many profiles";
-
- /* Failure: the reason is in 'errmsg' */
- if (!finished)
- png_crc_finish(png_ptr, length);
-
- png_ptr->colorspace.flags |= PNG_COLORSPACE_INVALID;
- png_colorspace_sync(png_ptr, info_ptr);
- if (errmsg != NULL) /* else already output */
- png_chunk_benign_error(png_ptr, errmsg);
-}
-#endif /* PNG_READ_iCCP_SUPPORTED */
-
-#ifdef PNG_READ_sPLT_SUPPORTED
-void /* PRIVATE */
-png_handle_sPLT(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-/* Note: this does not properly handle chunks that are > 64K under DOS */
-{
- png_bytep entry_start, buffer;
- png_sPLT_t new_palette;
- png_sPLT_entryp pp;
- png_uint_32 data_length;
- int entry_size, i;
- png_uint_32 skip = 0;
- png_uint_32 dl;
- png_size_t max_dl;
-
- png_debug(1, "in png_handle_sPLT");
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
- if (png_ptr->user_chunk_cache_max != 0)
- {
- if (png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- return;
- }
-
- if (--png_ptr->user_chunk_cache_max == 1)
- {
- png_warning(png_ptr, "No space in chunk cache for sPLT");
- png_crc_finish(png_ptr, length);
- return;
- }
- }
-#endif
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
-#ifdef PNG_MAX_MALLOC_64K
- if (length > 65535U)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "too large to fit in memory");
- return;
- }
-#endif
-
- buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
- if (buffer == NULL)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of memory");
- return;
- }
-
-
- /* WARNING: this may break if size_t is less than 32 bits; it is assumed
- * that the PNG_MAX_MALLOC_64K test is enabled in this case, but this is a
- * potential breakage point if the types in pngconf.h aren't exactly right.
- */
- png_crc_read(png_ptr, buffer, length);
-
- if (png_crc_finish(png_ptr, skip))
- return;
-
- buffer[length] = 0;
-
- for (entry_start = buffer; *entry_start; entry_start++)
- /* Empty loop to find end of name */ ;
-
- ++entry_start;
-
- /* A sample depth should follow the separator, and we should be on it */
- if (entry_start > buffer + length - 2)
- {
- png_warning(png_ptr, "malformed sPLT chunk");
- return;
- }
-
- new_palette.depth = *entry_start++;
- entry_size = (new_palette.depth == 8 ? 6 : 10);
- /* This must fit in a png_uint_32 because it is derived from the original
- * chunk data length.
- */
- data_length = length - (png_uint_32)(entry_start - buffer);
-
- /* Integrity-check the data length */
- if (data_length % entry_size)
- {
- png_warning(png_ptr, "sPLT chunk has bad length");
- return;
- }
-
- dl = (png_int_32)(data_length / entry_size);
- max_dl = PNG_SIZE_MAX / (sizeof (png_sPLT_entry));
-
- if (dl > max_dl)
- {
- png_warning(png_ptr, "sPLT chunk too long");
- return;
- }
-
- new_palette.nentries = (png_int_32)(data_length / entry_size);
-
- new_palette.entries = (png_sPLT_entryp)png_malloc_warn(
- png_ptr, new_palette.nentries * (sizeof (png_sPLT_entry)));
-
- if (new_palette.entries == NULL)
- {
- png_warning(png_ptr, "sPLT chunk requires too much memory");
- return;
- }
-
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
- for (i = 0; i < new_palette.nentries; i++)
- {
- pp = new_palette.entries + i;
-
- if (new_palette.depth == 8)
- {
- pp->red = *entry_start++;
- pp->green = *entry_start++;
- pp->blue = *entry_start++;
- pp->alpha = *entry_start++;
- }
-
- else
- {
- pp->red = png_get_uint_16(entry_start); entry_start += 2;
- pp->green = png_get_uint_16(entry_start); entry_start += 2;
- pp->blue = png_get_uint_16(entry_start); entry_start += 2;
- pp->alpha = png_get_uint_16(entry_start); entry_start += 2;
- }
-
- pp->frequency = png_get_uint_16(entry_start); entry_start += 2;
- }
-#else
- pp = new_palette.entries;
-
- for (i = 0; i < new_palette.nentries; i++)
- {
-
- if (new_palette.depth == 8)
- {
- pp[i].red = *entry_start++;
- pp[i].green = *entry_start++;
- pp[i].blue = *entry_start++;
- pp[i].alpha = *entry_start++;
- }
-
- else
- {
- pp[i].red = png_get_uint_16(entry_start); entry_start += 2;
- pp[i].green = png_get_uint_16(entry_start); entry_start += 2;
- pp[i].blue = png_get_uint_16(entry_start); entry_start += 2;
- pp[i].alpha = png_get_uint_16(entry_start); entry_start += 2;
- }
-
- pp[i].frequency = png_get_uint_16(entry_start); entry_start += 2;
- }
-#endif
-
- /* Discard all chunk data except the name and stash that */
- new_palette.name = (png_charp)buffer;
-
- png_set_sPLT(png_ptr, info_ptr, &new_palette, 1);
-
- png_free(png_ptr, new_palette.entries);
-}
-#endif /* PNG_READ_sPLT_SUPPORTED */
-
-#ifdef PNG_READ_tRNS_SUPPORTED
-void /* PRIVATE */
-png_handle_tRNS(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte readbuf[PNG_MAX_PALETTE_LENGTH];
-
- png_debug(1, "in png_handle_tRNS");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tRNS))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
- {
- png_byte buf[2];
-
- if (length != 2)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, 2);
- png_ptr->num_trans = 1;
- png_ptr->trans_color.gray = png_get_uint_16(buf);
- }
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
- {
- png_byte buf[6];
-
- if (length != 6)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, length);
- png_ptr->num_trans = 1;
- png_ptr->trans_color.red = png_get_uint_16(buf);
- png_ptr->trans_color.green = png_get_uint_16(buf + 2);
- png_ptr->trans_color.blue = png_get_uint_16(buf + 4);
- }
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (!(png_ptr->mode & PNG_HAVE_PLTE))
- {
- /* TODO: is this actually an error in the ISO spec? */
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- if (length > png_ptr->num_palette || length > PNG_MAX_PALETTE_LENGTH ||
- length == 0)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, readbuf, length);
- png_ptr->num_trans = (png_uint_16)length;
- }
-
- else
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid with alpha channel");
- return;
- }
-
- if (png_crc_finish(png_ptr, 0))
- {
- png_ptr->num_trans = 0;
- return;
- }
-
- /* TODO: this is a horrible side effect in the palette case because the
- * png_struct ends up with a pointer to the tRNS buffer owned by the
- * png_info. Fix this.
- */
- png_set_tRNS(png_ptr, info_ptr, readbuf, png_ptr->num_trans,
- &(png_ptr->trans_color));
-}
-#endif
-
-#ifdef PNG_READ_bKGD_SUPPORTED
-void /* PRIVATE */
-png_handle_bKGD(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- unsigned int truelen;
- png_byte buf[6];
- png_color_16 background;
-
- png_debug(1, "in png_handle_bKGD");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if ((png_ptr->mode & PNG_HAVE_IDAT) ||
- (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE &&
- !(png_ptr->mode & PNG_HAVE_PLTE)))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_bKGD))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- truelen = 1;
-
- else if (png_ptr->color_type & PNG_COLOR_MASK_COLOR)
- truelen = 6;
-
- else
- truelen = 2;
-
- if (length != truelen)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, truelen);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- /* We convert the index value into RGB components so that we can allow
- * arbitrary RGB values for background when we have transparency, and
- * so it is easy to determine the RGB values of the background color
- * from the info_ptr struct.
- */
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- background.index = buf[0];
-
- if (info_ptr && info_ptr->num_palette)
- {
- if (buf[0] >= info_ptr->num_palette)
- {
- png_chunk_benign_error(png_ptr, "invalid index");
- return;
- }
-
- background.red = (png_uint_16)png_ptr->palette[buf[0]].red;
- background.green = (png_uint_16)png_ptr->palette[buf[0]].green;
- background.blue = (png_uint_16)png_ptr->palette[buf[0]].blue;
- }
-
- else
- background.red = background.green = background.blue = 0;
-
- background.gray = 0;
- }
-
- else if (!(png_ptr->color_type & PNG_COLOR_MASK_COLOR)) /* GRAY */
- {
- background.index = 0;
- background.red =
- background.green =
- background.blue =
- background.gray = png_get_uint_16(buf);
- }
-
- else
- {
- background.index = 0;
- background.red = png_get_uint_16(buf);
- background.green = png_get_uint_16(buf + 2);
- background.blue = png_get_uint_16(buf + 4);
- background.gray = 0;
- }
-
- png_set_bKGD(png_ptr, info_ptr, &background);
-}
-#endif
-
-#ifdef PNG_READ_hIST_SUPPORTED
-void /* PRIVATE */
-png_handle_hIST(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- unsigned int num, i;
- png_uint_16 readbuf[PNG_MAX_PALETTE_LENGTH];
-
- png_debug(1, "in png_handle_hIST");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if ((png_ptr->mode & PNG_HAVE_IDAT) || !(png_ptr->mode & PNG_HAVE_PLTE))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_hIST))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- num = length / 2 ;
-
- if (num != png_ptr->num_palette || num > PNG_MAX_PALETTE_LENGTH)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- for (i = 0; i < num; i++)
- {
- png_byte buf[2];
-
- png_crc_read(png_ptr, buf, 2);
- readbuf[i] = png_get_uint_16(buf);
- }
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- png_set_hIST(png_ptr, info_ptr, readbuf);
-}
-#endif
-
-#ifdef PNG_READ_pHYs_SUPPORTED
-void /* PRIVATE */
-png_handle_pHYs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte buf[9];
- png_uint_32 res_x, res_y;
- int unit_type;
-
- png_debug(1, "in png_handle_pHYs");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pHYs))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- if (length != 9)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, 9);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- res_x = png_get_uint_32(buf);
- res_y = png_get_uint_32(buf + 4);
- unit_type = buf[8];
- png_set_pHYs(png_ptr, info_ptr, res_x, res_y, unit_type);
-}
-#endif
-
-#ifdef PNG_READ_oFFs_SUPPORTED
-void /* PRIVATE */
-png_handle_oFFs(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte buf[9];
- png_int_32 offset_x, offset_y;
- int unit_type;
-
- png_debug(1, "in png_handle_oFFs");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_oFFs))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- if (length != 9)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, 9);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- offset_x = png_get_int_32(buf);
- offset_y = png_get_int_32(buf + 4);
- unit_type = buf[8];
- png_set_oFFs(png_ptr, info_ptr, offset_x, offset_y, unit_type);
-}
-#endif
-
-#ifdef PNG_READ_pCAL_SUPPORTED
-/* Read the pCAL chunk (described in the PNG Extensions document) */
-void /* PRIVATE */
-png_handle_pCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_int_32 X0, X1;
- png_byte type, nparams;
- png_bytep buffer, buf, units, endptr;
- png_charpp params;
- int i;
-
- png_debug(1, "in png_handle_pCAL");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_pCAL))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- png_debug1(2, "Allocating and reading pCAL chunk data (%u bytes)",
- length + 1);
-
- buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
-
- if (buffer == NULL)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of memory");
- return;
- }
-
- png_crc_read(png_ptr, buffer, length);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- buffer[length] = 0; /* Null terminate the last string */
-
- png_debug(3, "Finding end of pCAL purpose string");
- for (buf = buffer; *buf; buf++)
- /* Empty loop */ ;
-
- endptr = buffer + length;
-
- /* We need to have at least 12 bytes after the purpose string
- * in order to get the parameter information.
- */
- if (endptr <= buf + 12)
- {
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_debug(3, "Reading pCAL X0, X1, type, nparams, and units");
- X0 = png_get_int_32((png_bytep)buf+1);
- X1 = png_get_int_32((png_bytep)buf+5);
- type = buf[9];
- nparams = buf[10];
- units = buf + 11;
-
- png_debug(3, "Checking pCAL equation type and number of parameters");
- /* Check that we have the right number of parameters for known
- * equation types.
- */
- if ((type == PNG_EQUATION_LINEAR && nparams != 2) ||
- (type == PNG_EQUATION_BASE_E && nparams != 3) ||
- (type == PNG_EQUATION_ARBITRARY && nparams != 3) ||
- (type == PNG_EQUATION_HYPERBOLIC && nparams != 4))
- {
- png_chunk_benign_error(png_ptr, "invalid parameter count");
- return;
- }
-
- else if (type >= PNG_EQUATION_LAST)
- {
- png_chunk_benign_error(png_ptr, "unrecognized equation type");
- }
-
- for (buf = units; *buf; buf++)
- /* Empty loop to move past the units string. */ ;
-
- png_debug(3, "Allocating pCAL parameters array");
-
- params = png_voidcast(png_charpp, png_malloc_warn(png_ptr,
- nparams * (sizeof (png_charp))));
-
- if (params == NULL)
- {
- png_chunk_benign_error(png_ptr, "out of memory");
- return;
- }
-
- /* Get pointers to the start of each parameter string. */
- for (i = 0; i < nparams; i++)
- {
- buf++; /* Skip the null string terminator from previous parameter. */
-
- png_debug1(3, "Reading pCAL parameter %d", i);
-
- for (params[i] = (png_charp)buf; buf <= endptr && *buf != 0; buf++)
- /* Empty loop to move past each parameter string */ ;
-
- /* Make sure we haven't run out of data yet */
- if (buf > endptr)
- {
- png_free(png_ptr, params);
- png_chunk_benign_error(png_ptr, "invalid data");
- return;
- }
- }
-
- png_set_pCAL(png_ptr, info_ptr, (png_charp)buffer, X0, X1, type, nparams,
- (png_charp)units, params);
-
- png_free(png_ptr, params);
-}
-#endif
-
-#ifdef PNG_READ_sCAL_SUPPORTED
-/* Read the sCAL chunk */
-void /* PRIVATE */
-png_handle_sCAL(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_bytep buffer;
- png_size_t i;
- int state;
-
- png_debug(1, "in png_handle_sCAL");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (png_ptr->mode & PNG_HAVE_IDAT)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of place");
- return;
- }
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_sCAL))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- /* Need unit type, width, \0, height: minimum 4 bytes */
- else if (length < 4)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_debug1(2, "Allocating and reading sCAL chunk data (%u bytes)",
- length + 1);
-
- buffer = png_read_buffer(png_ptr, length+1, 2/*silent*/);
-
- if (buffer == NULL)
- {
- png_chunk_benign_error(png_ptr, "out of memory");
- png_crc_finish(png_ptr, length);
- return;
- }
-
- png_crc_read(png_ptr, buffer, length);
- buffer[length] = 0; /* Null terminate the last string */
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- /* Validate the unit. */
- if (buffer[0] != 1 && buffer[0] != 2)
- {
- png_chunk_benign_error(png_ptr, "invalid unit");
- return;
- }
-
- /* Validate the ASCII numbers, need two ASCII numbers separated by
- * a '\0' and they need to fit exactly in the chunk data.
- */
- i = 1;
- state = 0;
-
- if (!png_check_fp_number((png_const_charp)buffer, length, &state, &i) ||
- i >= length || buffer[i++] != 0)
- png_chunk_benign_error(png_ptr, "bad width format");
-
- else if (!PNG_FP_IS_POSITIVE(state))
- png_chunk_benign_error(png_ptr, "non-positive width");
-
- else
- {
- png_size_t heighti = i;
-
- state = 0;
- if (!png_check_fp_number((png_const_charp)buffer, length, &state, &i) ||
- i != length)
- png_chunk_benign_error(png_ptr, "bad height format");
-
- else if (!PNG_FP_IS_POSITIVE(state))
- png_chunk_benign_error(png_ptr, "non-positive height");
-
- else
- /* This is the (only) success case. */
- png_set_sCAL_s(png_ptr, info_ptr, buffer[0],
- (png_charp)buffer+1, (png_charp)buffer+heighti);
- }
-}
-#endif
-
-#ifdef PNG_READ_tIME_SUPPORTED
-void /* PRIVATE */
-png_handle_tIME(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_byte buf[7];
- png_time mod_time;
-
- png_debug(1, "in png_handle_tIME");
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- else if (info_ptr != NULL && (info_ptr->valid & PNG_INFO_tIME))
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "duplicate");
- return;
- }
-
- if (png_ptr->mode & PNG_HAVE_IDAT)
- png_ptr->mode |= PNG_AFTER_IDAT;
-
- if (length != 7)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "invalid");
- return;
- }
-
- png_crc_read(png_ptr, buf, 7);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- mod_time.second = buf[6];
- mod_time.minute = buf[5];
- mod_time.hour = buf[4];
- mod_time.day = buf[3];
- mod_time.month = buf[2];
- mod_time.year = png_get_uint_16(buf);
-
- png_set_tIME(png_ptr, info_ptr, &mod_time);
-}
-#endif
-
-#ifdef PNG_READ_tEXt_SUPPORTED
-/* Note: this does not properly handle chunks that are > 64K under DOS */
-void /* PRIVATE */
-png_handle_tEXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_text text_info;
- png_bytep buffer;
- png_charp key;
- png_charp text;
- png_uint_32 skip = 0;
-
- png_debug(1, "in png_handle_tEXt");
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
- if (png_ptr->user_chunk_cache_max != 0)
- {
- if (png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- return;
- }
-
- if (--png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "no space in chunk cache");
- return;
- }
- }
-#endif
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- if (png_ptr->mode & PNG_HAVE_IDAT)
- png_ptr->mode |= PNG_AFTER_IDAT;
-
-#ifdef PNG_MAX_MALLOC_64K
- if (length > 65535U)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "too large to fit in memory");
- return;
- }
-#endif
-
- buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/);
-
- if (buffer == NULL)
- {
- png_chunk_benign_error(png_ptr, "out of memory");
- return;
- }
-
- png_crc_read(png_ptr, buffer, length);
-
- if (png_crc_finish(png_ptr, skip))
- return;
-
- key = (png_charp)buffer;
- key[length] = 0;
-
- for (text = key; *text; text++)
- /* Empty loop to find end of key */ ;
-
- if (text != key + length)
- text++;
-
- text_info.compression = PNG_TEXT_COMPRESSION_NONE;
- text_info.key = key;
- text_info.lang = NULL;
- text_info.lang_key = NULL;
- text_info.itxt_length = 0;
- text_info.text = text;
- text_info.text_length = strlen(text);
-
- if (png_set_text_2(png_ptr, info_ptr, &text_info, 1))
- png_warning(png_ptr, "Insufficient memory to process text chunk");
-}
-#endif
-
-#ifdef PNG_READ_zTXt_SUPPORTED
-/* Note: this does not correctly handle chunks that are > 64K under DOS */
-void /* PRIVATE */
-png_handle_zTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_const_charp errmsg = NULL;
- png_bytep buffer;
- png_uint_32 keyword_length;
-
- png_debug(1, "in png_handle_zTXt");
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
- if (png_ptr->user_chunk_cache_max != 0)
- {
- if (png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- return;
- }
-
- if (--png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "no space in chunk cache");
- return;
- }
- }
-#endif
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- if (png_ptr->mode & PNG_HAVE_IDAT)
- png_ptr->mode |= PNG_AFTER_IDAT;
-
- buffer = png_read_buffer(png_ptr, length, 2/*silent*/);
-
- if (buffer == NULL)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of memory");
- return;
- }
-
- png_crc_read(png_ptr, buffer, length);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- /* TODO: also check that the keyword contents match the spec! */
- for (keyword_length = 0;
- keyword_length < length && buffer[keyword_length] != 0;
- ++keyword_length)
- /* Empty loop to find end of name */ ;
-
- if (keyword_length > 79 || keyword_length < 1)
- errmsg = "bad keyword";
-
- /* zTXt must have some LZ data after the keyword, although it may expand to
- * zero bytes; we need a '\0' at the end of the keyword, the compression type
- * then the LZ data:
- */
- else if (keyword_length + 3 > length)
- errmsg = "truncated";
-
- else if (buffer[keyword_length+1] != PNG_COMPRESSION_TYPE_BASE)
- errmsg = "unknown compression type";
-
- else
- {
- png_alloc_size_t uncompressed_length = PNG_SIZE_MAX;
-
- /* TODO: at present png_decompress_chunk imposes a single application
- * level memory limit, this should be split to different values for iCCP
- * and text chunks.
- */
- if (png_decompress_chunk(png_ptr, length, keyword_length+2,
- &uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
- {
- png_text text;
-
- /* It worked; png_ptr->read_buffer now looks like a tEXt chunk except
- * for the extra compression type byte and the fact that it isn't
- * necessarily '\0' terminated.
- */
- buffer = png_ptr->read_buffer;
- buffer[uncompressed_length+(keyword_length+2)] = 0;
-
- text.compression = PNG_TEXT_COMPRESSION_zTXt;
- text.key = (png_charp)buffer;
- text.text = (png_charp)(buffer + keyword_length+2);
- text.text_length = uncompressed_length;
- text.itxt_length = 0;
- text.lang = NULL;
- text.lang_key = NULL;
-
- if (png_set_text_2(png_ptr, info_ptr, &text, 1))
- errmsg = "insufficient memory";
- }
-
- else
- errmsg = png_ptr->zstream.msg;
- }
-
- if (errmsg != NULL)
- png_chunk_benign_error(png_ptr, errmsg);
-}
-#endif
-
-#ifdef PNG_READ_iTXt_SUPPORTED
-/* Note: this does not correctly handle chunks that are > 64K under DOS */
-void /* PRIVATE */
-png_handle_iTXt(png_structrp png_ptr, png_inforp info_ptr, png_uint_32 length)
-{
- png_const_charp errmsg = NULL;
- png_bytep buffer;
- png_uint_32 prefix_length;
-
- png_debug(1, "in png_handle_iTXt");
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
- if (png_ptr->user_chunk_cache_max != 0)
- {
- if (png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- return;
- }
-
- if (--png_ptr->user_chunk_cache_max == 1)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "no space in chunk cache");
- return;
- }
- }
-#endif
-
- if (!(png_ptr->mode & PNG_HAVE_IHDR))
- png_chunk_error(png_ptr, "missing IHDR");
-
- if (png_ptr->mode & PNG_HAVE_IDAT)
- png_ptr->mode |= PNG_AFTER_IDAT;
-
- buffer = png_read_buffer(png_ptr, length+1, 1/*warn*/);
-
- if (buffer == NULL)
- {
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "out of memory");
- return;
- }
-
- png_crc_read(png_ptr, buffer, length);
-
- if (png_crc_finish(png_ptr, 0))
- return;
-
- /* First the keyword. */
- for (prefix_length=0;
- prefix_length < length && buffer[prefix_length] != 0;
- ++prefix_length)
- /* Empty loop */ ;
-
- /* Perform a basic check on the keyword length here. */
- if (prefix_length > 79 || prefix_length < 1)
- errmsg = "bad keyword";
-
- /* Expect keyword, compression flag, compression type, language, translated
- * keyword (both may be empty but are 0 terminated) then the text, which may
- * be empty.
- */
- else if (prefix_length + 5 > length)
- errmsg = "truncated";
-
- else if (buffer[prefix_length+1] == 0 ||
- (buffer[prefix_length+1] == 1 &&
- buffer[prefix_length+2] == PNG_COMPRESSION_TYPE_BASE))
- {
- int compressed = buffer[prefix_length+1] != 0;
- png_uint_32 language_offset, translated_keyword_offset;
- png_alloc_size_t uncompressed_length = 0;
-
- /* Now the language tag */
- prefix_length += 3;
- language_offset = prefix_length;
-
- for (; prefix_length < length && buffer[prefix_length] != 0;
- ++prefix_length)
- /* Empty loop */ ;
-
- /* WARNING: the length may be invalid here, this is checked below. */
- translated_keyword_offset = ++prefix_length;
-
- for (; prefix_length < length && buffer[prefix_length] != 0;
- ++prefix_length)
- /* Empty loop */ ;
-
- /* prefix_length should now be at the trailing '\0' of the translated
- * keyword, but it may already be over the end. None of this arithmetic
- * can overflow because chunks are at most 2^31 bytes long, but on 16-bit
- * systems the available allocaton may overflow.
- */
- ++prefix_length;
-
- if (!compressed && prefix_length <= length)
- uncompressed_length = length - prefix_length;
-
- else if (compressed && prefix_length < length)
- {
- uncompressed_length = PNG_SIZE_MAX;
-
- /* TODO: at present png_decompress_chunk imposes a single application
- * level memory limit, this should be split to different values for
- * iCCP and text chunks.
- */
- if (png_decompress_chunk(png_ptr, length, prefix_length,
- &uncompressed_length, 1/*terminate*/) == Z_STREAM_END)
- buffer = png_ptr->read_buffer;
-
- else
- errmsg = png_ptr->zstream.msg;
- }
-
- else
- errmsg = "truncated";
-
- if (errmsg == NULL)
- {
- png_text text;
-
- buffer[uncompressed_length+prefix_length] = 0;
-
- if (compressed)
- text.compression = PNG_ITXT_COMPRESSION_NONE;
-
- else
- text.compression = PNG_ITXT_COMPRESSION_zTXt;
-
- text.key = (png_charp)buffer;
- text.lang = (png_charp)buffer + language_offset;
- text.lang_key = (png_charp)buffer + translated_keyword_offset;
- text.text = (png_charp)buffer + prefix_length;
- text.text_length = 0;
- text.itxt_length = uncompressed_length;
-
- if (png_set_text_2(png_ptr, info_ptr, &text, 1))
- errmsg = "insufficient memory";
- }
- }
-
- else
- errmsg = "bad compression info";
-
- if (errmsg != NULL)
- png_chunk_benign_error(png_ptr, errmsg);
-}
-#endif
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-/* Utility function for png_handle_unknown; set up png_ptr::unknown_chunk */
-static int
-png_cache_unknown_chunk(png_structrp png_ptr, png_uint_32 length)
-{
- png_alloc_size_t limit = PNG_SIZE_MAX;
-
- if (png_ptr->unknown_chunk.data != NULL)
- {
- png_free(png_ptr, png_ptr->unknown_chunk.data);
- png_ptr->unknown_chunk.data = NULL;
- }
-
-# ifdef PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
- if (png_ptr->user_chunk_malloc_max > 0 &&
- png_ptr->user_chunk_malloc_max < limit)
- limit = png_ptr->user_chunk_malloc_max;
-
-# elif PNG_USER_CHUNK_MALLOC_MAX > 0
- if (PNG_USER_CHUNK_MALLOC_MAX < limit)
- limit = PNG_USER_CHUNK_MALLOC_MAX;
-# endif
-
- if (length <= limit)
- {
- PNG_CSTRING_FROM_CHUNK(png_ptr->unknown_chunk.name, png_ptr->chunk_name);
- /* The following is safe because of the PNG_SIZE_MAX init above */
- png_ptr->unknown_chunk.size = (png_size_t)length/*SAFE*/;
- /* 'mode' is a flag array, only the bottom four bits matter here */
- png_ptr->unknown_chunk.location = (png_byte)png_ptr->mode/*SAFE*/;
-
- if (length == 0)
- png_ptr->unknown_chunk.data = NULL;
-
- else
- {
- /* Do a 'warn' here - it is handled below. */
- png_ptr->unknown_chunk.data = png_voidcast(png_bytep,
- png_malloc_warn(png_ptr, length));
- }
- }
-
- if (png_ptr->unknown_chunk.data == NULL && length > 0)
- {
- /* This is benign because we clean up correctly */
- png_crc_finish(png_ptr, length);
- png_chunk_benign_error(png_ptr, "unknown chunk exceeds memory limits");
- return 0;
- }
-
- else
- {
- if (length > 0)
- png_crc_read(png_ptr, png_ptr->unknown_chunk.data, length);
- png_crc_finish(png_ptr, 0);
- return 1;
- }
-}
-#endif /* PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
-
-/* Handle an unknown, or known but disabled, chunk */
-void /* PRIVATE */
-png_handle_unknown(png_structrp png_ptr, png_inforp info_ptr,
- png_uint_32 length, int keep)
-{
- int handled = 0; /* the chunk was handled */
-
- png_debug(1, "in png_handle_unknown");
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- /* NOTE: this code is based on the code in libpng-1.4.12 except for fixing
- * the bug which meant that setting a non-default behavior for a specific
- * chunk would be ignored (the default was always used unless a user
- * callback was installed).
- *
- * 'keep' is the value from the png_chunk_unknown_handling, the setting for
- * this specific chunk_name, if PNG_HANDLE_AS_UNKNOWN_SUPPORTED, if not it
- * will always be PNG_HANDLE_CHUNK_AS_DEFAULT and it needs to be set here.
- * This is just an optimization to avoid multiple calls to the lookup
- * function.
- */
-# ifndef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-# ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- keep = png_chunk_unknown_handling(png_ptr, png_ptr->chunk_name);
-# endif
-# endif
-
- /* One of the following methods will read the chunk or skip it (at least one
- * of these is always defined because this is the only way to switch on
- * PNG_READ_UNKNOWN_CHUNKS_SUPPORTED)
- */
-# ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- /* The user callback takes precedence over the chunk keep value, but the
- * keep value is still required to validate a save of a critical chunk.
- */
- if (png_ptr->read_user_chunk_fn != NULL)
- {
- if (png_cache_unknown_chunk(png_ptr, length))
- {
- /* Callback to user unknown chunk handler */
- int ret = (*(png_ptr->read_user_chunk_fn))(png_ptr,
- &png_ptr->unknown_chunk);
-
- /* ret is:
- * negative: An error occured, png_chunk_error will be called.
- * zero: The chunk was not handled, the chunk will be discarded
- * unless png_set_keep_unknown_chunks has been used to set
- * a 'keep' behavior for this particular chunk, in which
- * case that will be used. A critical chunk will cause an
- * error at this point unless it is to be saved.
- * positive: The chunk was handled, libpng will ignore/discard it.
- */
- if (ret < 0)
- png_chunk_error(png_ptr, "error in user chunk");
-
- else if (ret == 0)
- {
- /* If the keep value is 'default' or 'never' override it, but
- * still error out on critical chunks unless the keep value is
- * 'always' While this is weird it is the behavior in 1.4.12.
- * A possible improvement would be to obey the value set for the
- * chunk, but this would be an API change that would probably
- * damage some applications.
- *
- * The png_app_warning below catches the case that matters, where
- * the application has not set specific save or ignore for this
- * chunk or global save or ignore.
- */
- if (keep < PNG_HANDLE_CHUNK_IF_SAFE)
- {
-# ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- if (png_ptr->unknown_default < PNG_HANDLE_CHUNK_IF_SAFE)
- {
- png_chunk_warning(png_ptr, "Saving unknown chunk:");
- png_app_warning(png_ptr,
- "forcing save of an unhandled chunk;"
- " please call png_set_keep_unknown_chunks");
- /* with keep = PNG_HANDLE_CHUNK_IF_SAFE */
- }
-# endif
- keep = PNG_HANDLE_CHUNK_IF_SAFE;
- }
- }
-
- else /* chunk was handled */
- {
- handled = 1;
- /* Critical chunks can be safely discarded at this point. */
- keep = PNG_HANDLE_CHUNK_NEVER;
- }
- }
-
- else
- keep = PNG_HANDLE_CHUNK_NEVER; /* insufficient memory */
- }
-
- else
- /* Use the SAVE_UNKNOWN_CHUNKS code or skip the chunk */
-# endif /* PNG_READ_USER_CHUNKS_SUPPORTED */
-
-# ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
- {
- /* keep is currently just the per-chunk setting, if there was no
- * setting change it to the global default now (not that this may
- * still be AS_DEFAULT) then obtain the cache of the chunk if required,
- * if not simply skip the chunk.
- */
- if (keep == PNG_HANDLE_CHUNK_AS_DEFAULT)
- keep = png_ptr->unknown_default;
-
- if (keep == PNG_HANDLE_CHUNK_ALWAYS ||
- (keep == PNG_HANDLE_CHUNK_IF_SAFE &&
- PNG_CHUNK_ANCILLARY(png_ptr->chunk_name)))
- {
- if (!png_cache_unknown_chunk(png_ptr, length))
- keep = PNG_HANDLE_CHUNK_NEVER;
- }
-
- else
- png_crc_finish(png_ptr, length);
- }
-# else
-# ifndef PNG_READ_USER_CHUNKS_SUPPORTED
-# error no method to support READ_UNKNOWN_CHUNKS
-# endif
-
- {
- /* If here there is no read callback pointer set and no support is
- * compiled in to just save the unknown chunks, so simply skip this
- * chunk. If 'keep' is something other than AS_DEFAULT or NEVER then
- * the app has erroneously asked for unknown chunk saving when there
- * is no support.
- */
- if (keep > PNG_HANDLE_CHUNK_NEVER)
- png_app_error(png_ptr, "no unknown chunk support available");
-
- png_crc_finish(png_ptr, length);
- }
-# endif
-
-# ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
- /* Now store the chunk in the chunk list if appropriate, and if the limits
- * permit it.
- */
- if (keep == PNG_HANDLE_CHUNK_ALWAYS ||
- (keep == PNG_HANDLE_CHUNK_IF_SAFE &&
- PNG_CHUNK_ANCILLARY(png_ptr->chunk_name)))
- {
-# ifdef PNG_USER_LIMITS_SUPPORTED
- switch (png_ptr->user_chunk_cache_max)
- {
- case 2:
- png_ptr->user_chunk_cache_max = 1;
- png_chunk_benign_error(png_ptr, "no space in chunk cache");
- /* FALL THROUGH */
- case 1:
- /* NOTE: prior to 1.6.0 this case resulted in an unknown critical
- * chunk being skipped, now there will be a hard error below.
- */
- break;
-
- default: /* not at limit */
- --(png_ptr->user_chunk_cache_max);
- /* FALL THROUGH */
- case 0: /* no limit */
-# endif /* PNG_USER_LIMITS_SUPPORTED */
- /* Here when the limit isn't reached or when limits are compiled
- * out; store the chunk.
- */
- png_set_unknown_chunks(png_ptr, info_ptr,
- &png_ptr->unknown_chunk, 1);
- handled = 1;
-# ifdef PNG_USER_LIMITS_SUPPORTED
- break;
- }
-# endif
- }
-# else /* no store support! */
- PNG_UNUSED(info_ptr)
-# error untested code (reading unknown chunks with no store support)
-# endif
-
- /* Regardless of the error handling below the cached data (if any) can be
- * freed now. Notice that the data is not freed if there is a png_error, but
- * it will be freed by destroy_read_struct.
- */
- if (png_ptr->unknown_chunk.data != NULL)
- png_free(png_ptr, png_ptr->unknown_chunk.data);
- png_ptr->unknown_chunk.data = NULL;
-
-#else /* !PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
- /* There is no support to read an unknown chunk, so just skip it. */
- png_crc_finish(png_ptr, length);
- PNG_UNUSED(info_ptr)
- PNG_UNUSED(keep)
-#endif /* !PNG_READ_UNKNOWN_CHUNKS_SUPPORTED */
-
- /* Check for unhandled critical chunks */
- if (!handled && PNG_CHUNK_CRITICAL(png_ptr->chunk_name))
- png_chunk_error(png_ptr, "unhandled critical chunk");
-}
-
-/* This function is called to verify that a chunk name is valid.
- * This function can't have the "critical chunk check" incorporated
- * into it, since in the future we will need to be able to call user
- * functions to handle unknown critical chunks after we check that
- * the chunk name itself is valid.
- */
-
-/* Bit hacking: the test for an invalid byte in the 4 byte chunk name is:
- *
- * ((c) < 65 || (c) > 122 || ((c) > 90 && (c) < 97))
- */
-
-void /* PRIVATE */
-png_check_chunk_name(png_structrp png_ptr, png_uint_32 chunk_name)
-{
- int i;
-
- png_debug(1, "in png_check_chunk_name");
-
- for (i=1; i<=4; ++i)
- {
- int c = chunk_name & 0xff;
-
- if (c < 65 || c > 122 || (c > 90 && c < 97))
- png_chunk_error(png_ptr, "invalid chunk type");
-
- chunk_name >>= 8;
- }
-}
-
-/* Combines the row recently read in with the existing pixels in the row. This
- * routine takes care of alpha and transparency if requested. This routine also
- * handles the two methods of progressive display of interlaced images,
- * depending on the 'display' value; if 'display' is true then the whole row
- * (dp) is filled from the start by replicating the available pixels. If
- * 'display' is false only those pixels present in the pass are filled in.
- */
-void /* PRIVATE */
-png_combine_row(png_const_structrp png_ptr, png_bytep dp, int display)
-{
- unsigned int pixel_depth = png_ptr->transformed_pixel_depth;
- png_const_bytep sp = png_ptr->row_buf + 1;
- png_uint_32 row_width = png_ptr->width;
- unsigned int pass = png_ptr->pass;
- png_bytep end_ptr = 0;
- png_byte end_byte = 0;
- unsigned int end_mask;
-
- png_debug(1, "in png_combine_row");
-
- /* Added in 1.5.6: it should not be possible to enter this routine until at
- * least one row has been read from the PNG data and transformed.
- */
- if (pixel_depth == 0)
- png_error(png_ptr, "internal row logic error");
-
- /* Added in 1.5.4: the pixel depth should match the information returned by
- * any call to png_read_update_info at this point. Do not continue if we got
- * this wrong.
- */
- if (png_ptr->info_rowbytes != 0 && png_ptr->info_rowbytes !=
- PNG_ROWBYTES(pixel_depth, row_width))
- png_error(png_ptr, "internal row size calculation error");
-
- /* Don't expect this to ever happen: */
- if (row_width == 0)
- png_error(png_ptr, "internal row width error");
-
- /* Preserve the last byte in cases where only part of it will be overwritten,
- * the multiply below may overflow, we don't care because ANSI-C guarantees
- * we get the low bits.
- */
- end_mask = (pixel_depth * row_width) & 7;
- if (end_mask != 0)
- {
- /* end_ptr == NULL is a flag to say do nothing */
- end_ptr = dp + PNG_ROWBYTES(pixel_depth, row_width) - 1;
- end_byte = *end_ptr;
-# ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (png_ptr->transformations & PNG_PACKSWAP) /* little-endian byte */
- end_mask = 0xff << end_mask;
-
- else /* big-endian byte */
-# endif
- end_mask = 0xff >> end_mask;
- /* end_mask is now the bits to *keep* from the destination row */
- }
-
- /* For non-interlaced images this reduces to a memcpy(). A memcpy()
- * will also happen if interlacing isn't supported or if the application
- * does not call png_set_interlace_handling(). In the latter cases the
- * caller just gets a sequence of the unexpanded rows from each interlace
- * pass.
- */
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE) &&
- pass < 6 && (display == 0 ||
- /* The following copies everything for 'display' on passes 0, 2 and 4. */
- (display == 1 && (pass & 1) != 0)))
- {
- /* Narrow images may have no bits in a pass; the caller should handle
- * this, but this test is cheap:
- */
- if (row_width <= PNG_PASS_START_COL(pass))
- return;
-
- if (pixel_depth < 8)
- {
- /* For pixel depths up to 4 bpp the 8-pixel mask can be expanded to fit
- * into 32 bits, then a single loop over the bytes using the four byte
- * values in the 32-bit mask can be used. For the 'display' option the
- * expanded mask may also not require any masking within a byte. To
- * make this work the PACKSWAP option must be taken into account - it
- * simply requires the pixels to be reversed in each byte.
- *
- * The 'regular' case requires a mask for each of the first 6 passes,
- * the 'display' case does a copy for the even passes in the range
- * 0..6. This has already been handled in the test above.
- *
- * The masks are arranged as four bytes with the first byte to use in
- * the lowest bits (little-endian) regardless of the order (PACKSWAP or
- * not) of the pixels in each byte.
- *
- * NOTE: the whole of this logic depends on the caller of this function
- * only calling it on rows appropriate to the pass. This function only
- * understands the 'x' logic; the 'y' logic is handled by the caller.
- *
- * The following defines allow generation of compile time constant bit
- * masks for each pixel depth and each possibility of swapped or not
- * swapped bytes. Pass 'p' is in the range 0..6; 'x', a pixel index,
- * is in the range 0..7; and the result is 1 if the pixel is to be
- * copied in the pass, 0 if not. 'S' is for the sparkle method, 'B'
- * for the block method.
- *
- * With some compilers a compile time expression of the general form:
- *
- * (shift >= 32) ? (a >> (shift-32)) : (b >> shift)
- *
- * Produces warnings with values of 'shift' in the range 33 to 63
- * because the right hand side of the ?: expression is evaluated by
- * the compiler even though it isn't used. Microsoft Visual C (various
- * versions) and the Intel C compiler are known to do this. To avoid
- * this the following macros are used in 1.5.6. This is a temporary
- * solution to avoid destabilizing the code during the release process.
- */
-# if PNG_USE_COMPILE_TIME_MASKS
-# define PNG_LSR(x,s) ((x)>>((s) & 0x1f))
-# define PNG_LSL(x,s) ((x)<<((s) & 0x1f))
-# else
-# define PNG_LSR(x,s) ((x)>>(s))
-# define PNG_LSL(x,s) ((x)<<(s))
-# endif
-# define S_COPY(p,x) (((p)<4 ? PNG_LSR(0x80088822,(3-(p))*8+(7-(x))) :\
- PNG_LSR(0xaa55ff00,(7-(p))*8+(7-(x)))) & 1)
-# define B_COPY(p,x) (((p)<4 ? PNG_LSR(0xff0fff33,(3-(p))*8+(7-(x))) :\
- PNG_LSR(0xff55ff00,(7-(p))*8+(7-(x)))) & 1)
-
- /* Return a mask for pass 'p' pixel 'x' at depth 'd'. The mask is
- * little endian - the first pixel is at bit 0 - however the extra
- * parameter 's' can be set to cause the mask position to be swapped
- * within each byte, to match the PNG format. This is done by XOR of
- * the shift with 7, 6 or 4 for bit depths 1, 2 and 4.
- */
-# define PIXEL_MASK(p,x,d,s) \
- (PNG_LSL(((PNG_LSL(1U,(d)))-1),(((x)*(d))^((s)?8-(d):0))))
-
- /* Hence generate the appropriate 'block' or 'sparkle' pixel copy mask.
- */
-# define S_MASKx(p,x,d,s) (S_COPY(p,x)?PIXEL_MASK(p,x,d,s):0)
-# define B_MASKx(p,x,d,s) (B_COPY(p,x)?PIXEL_MASK(p,x,d,s):0)
-
- /* Combine 8 of these to get the full mask. For the 1-bpp and 2-bpp
- * cases the result needs replicating, for the 4-bpp case the above
- * generates a full 32 bits.
- */
-# define MASK_EXPAND(m,d) ((m)*((d)==1?0x01010101:((d)==2?0x00010001:1)))
-
-# define S_MASK(p,d,s) MASK_EXPAND(S_MASKx(p,0,d,s) + S_MASKx(p,1,d,s) +\
- S_MASKx(p,2,d,s) + S_MASKx(p,3,d,s) + S_MASKx(p,4,d,s) +\
- S_MASKx(p,5,d,s) + S_MASKx(p,6,d,s) + S_MASKx(p,7,d,s), d)
-
-# define B_MASK(p,d,s) MASK_EXPAND(B_MASKx(p,0,d,s) + B_MASKx(p,1,d,s) +\
- B_MASKx(p,2,d,s) + B_MASKx(p,3,d,s) + B_MASKx(p,4,d,s) +\
- B_MASKx(p,5,d,s) + B_MASKx(p,6,d,s) + B_MASKx(p,7,d,s), d)
-
-#if PNG_USE_COMPILE_TIME_MASKS
- /* Utility macros to construct all the masks for a depth/swap
- * combination. The 's' parameter says whether the format is PNG
- * (big endian bytes) or not. Only the three odd-numbered passes are
- * required for the display/block algorithm.
- */
-# define S_MASKS(d,s) { S_MASK(0,d,s), S_MASK(1,d,s), S_MASK(2,d,s),\
- S_MASK(3,d,s), S_MASK(4,d,s), S_MASK(5,d,s) }
-
-# define B_MASKS(d,s) { B_MASK(1,d,s), S_MASK(3,d,s), S_MASK(5,d,s) }
-
-# define DEPTH_INDEX(d) ((d)==1?0:((d)==2?1:2))
-
- /* Hence the pre-compiled masks indexed by PACKSWAP (or not), depth and
- * then pass:
- */
- static PNG_CONST png_uint_32 row_mask[2/*PACKSWAP*/][3/*depth*/][6] =
- {
- /* Little-endian byte masks for PACKSWAP */
- { S_MASKS(1,0), S_MASKS(2,0), S_MASKS(4,0) },
- /* Normal (big-endian byte) masks - PNG format */
- { S_MASKS(1,1), S_MASKS(2,1), S_MASKS(4,1) }
- };
-
- /* display_mask has only three entries for the odd passes, so index by
- * pass>>1.
- */
- static PNG_CONST png_uint_32 display_mask[2][3][3] =
- {
- /* Little-endian byte masks for PACKSWAP */
- { B_MASKS(1,0), B_MASKS(2,0), B_MASKS(4,0) },
- /* Normal (big-endian byte) masks - PNG format */
- { B_MASKS(1,1), B_MASKS(2,1), B_MASKS(4,1) }
- };
-
-# define MASK(pass,depth,display,png)\
- ((display)?display_mask[png][DEPTH_INDEX(depth)][pass>>1]:\
- row_mask[png][DEPTH_INDEX(depth)][pass])
-
-#else /* !PNG_USE_COMPILE_TIME_MASKS */
- /* This is the runtime alternative: it seems unlikely that this will
- * ever be either smaller or faster than the compile time approach.
- */
-# define MASK(pass,depth,display,png)\
- ((display)?B_MASK(pass,depth,png):S_MASK(pass,depth,png))
-#endif /* !PNG_USE_COMPILE_TIME_MASKS */
-
- /* Use the appropriate mask to copy the required bits. In some cases
- * the byte mask will be 0 or 0xff, optimize these cases. row_width is
- * the number of pixels, but the code copies bytes, so it is necessary
- * to special case the end.
- */
- png_uint_32 pixels_per_byte = 8 / pixel_depth;
- png_uint_32 mask;
-
-# ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (png_ptr->transformations & PNG_PACKSWAP)
- mask = MASK(pass, pixel_depth, display, 0);
-
- else
-# endif
- mask = MASK(pass, pixel_depth, display, 1);
-
- for (;;)
- {
- png_uint_32 m;
-
- /* It doesn't matter in the following if png_uint_32 has more than
- * 32 bits because the high bits always match those in m<<24; it is,
- * however, essential to use OR here, not +, because of this.
- */
- m = mask;
- mask = (m >> 8) | (m << 24); /* rotate right to good compilers */
- m &= 0xff;
-
- if (m != 0) /* something to copy */
- {
- if (m != 0xff)
- *dp = (png_byte)((*dp & ~m) | (*sp & m));
- else
- *dp = *sp;
- }
-
- /* NOTE: this may overwrite the last byte with garbage if the image
- * is not an exact number of bytes wide; libpng has always done
- * this.
- */
- if (row_width <= pixels_per_byte)
- break; /* May need to restore part of the last byte */
-
- row_width -= pixels_per_byte;
- ++dp;
- ++sp;
- }
- }
-
- else /* pixel_depth >= 8 */
- {
- unsigned int bytes_to_copy, bytes_to_jump;
-
- /* Validate the depth - it must be a multiple of 8 */
- if (pixel_depth & 7)
- png_error(png_ptr, "invalid user transform pixel depth");
-
- pixel_depth >>= 3; /* now in bytes */
- row_width *= pixel_depth;
-
- /* Regardless of pass number the Adam 7 interlace always results in a
- * fixed number of pixels to copy then to skip. There may be a
- * different number of pixels to skip at the start though.
- */
- {
- unsigned int offset = PNG_PASS_START_COL(pass) * pixel_depth;
-
- row_width -= offset;
- dp += offset;
- sp += offset;
- }
-
- /* Work out the bytes to copy. */
- if (display)
- {
- /* When doing the 'block' algorithm the pixel in the pass gets
- * replicated to adjacent pixels. This is why the even (0,2,4,6)
- * passes are skipped above - the entire expanded row is copied.
- */
- bytes_to_copy = (1<<((6-pass)>>1)) * pixel_depth;
-
- /* But don't allow this number to exceed the actual row width. */
- if (bytes_to_copy > row_width)
- bytes_to_copy = row_width;
- }
-
- else /* normal row; Adam7 only ever gives us one pixel to copy. */
- bytes_to_copy = pixel_depth;
-
- /* In Adam7 there is a constant offset between where the pixels go. */
- bytes_to_jump = PNG_PASS_COL_OFFSET(pass) * pixel_depth;
-
- /* And simply copy these bytes. Some optimization is possible here,
- * depending on the value of 'bytes_to_copy'. Special case the low
- * byte counts, which we know to be frequent.
- *
- * Notice that these cases all 'return' rather than 'break' - this
- * avoids an unnecessary test on whether to restore the last byte
- * below.
- */
- switch (bytes_to_copy)
- {
- case 1:
- for (;;)
- {
- *dp = *sp;
-
- if (row_width <= bytes_to_jump)
- return;
-
- dp += bytes_to_jump;
- sp += bytes_to_jump;
- row_width -= bytes_to_jump;
- }
-
- case 2:
- /* There is a possibility of a partial copy at the end here; this
- * slows the code down somewhat.
- */
- do
- {
- dp[0] = sp[0], dp[1] = sp[1];
-
- if (row_width <= bytes_to_jump)
- return;
-
- sp += bytes_to_jump;
- dp += bytes_to_jump;
- row_width -= bytes_to_jump;
- }
- while (row_width > 1);
-
- /* And there can only be one byte left at this point: */
- *dp = *sp;
- return;
-
- case 3:
- /* This can only be the RGB case, so each copy is exactly one
- * pixel and it is not necessary to check for a partial copy.
- */
- for(;;)
- {
- dp[0] = sp[0], dp[1] = sp[1], dp[2] = sp[2];
-
- if (row_width <= bytes_to_jump)
- return;
-
- sp += bytes_to_jump;
- dp += bytes_to_jump;
- row_width -= bytes_to_jump;
- }
-
- default:
-#if PNG_ALIGN_TYPE != PNG_ALIGN_NONE
- /* Check for double byte alignment and, if possible, use a
- * 16-bit copy. Don't attempt this for narrow images - ones that
- * are less than an interlace panel wide. Don't attempt it for
- * wide bytes_to_copy either - use the memcpy there.
- */
- if (bytes_to_copy < 16 /*else use memcpy*/ &&
- png_isaligned(dp, png_uint_16) &&
- png_isaligned(sp, png_uint_16) &&
- bytes_to_copy % (sizeof (png_uint_16)) == 0 &&
- bytes_to_jump % (sizeof (png_uint_16)) == 0)
- {
- /* Everything is aligned for png_uint_16 copies, but try for
- * png_uint_32 first.
- */
- if (png_isaligned(dp, png_uint_32) &&
- png_isaligned(sp, png_uint_32) &&
- bytes_to_copy % (sizeof (png_uint_32)) == 0 &&
- bytes_to_jump % (sizeof (png_uint_32)) == 0)
- {
- png_uint_32p dp32 = png_aligncast(png_uint_32p,dp);
- png_const_uint_32p sp32 = png_aligncastconst(
- png_const_uint_32p, sp);
- size_t skip = (bytes_to_jump-bytes_to_copy) /
- (sizeof (png_uint_32));
-
- do
- {
- size_t c = bytes_to_copy;
- do
- {
- *dp32++ = *sp32++;
- c -= (sizeof (png_uint_32));
- }
- while (c > 0);
-
- if (row_width <= bytes_to_jump)
- return;
-
- dp32 += skip;
- sp32 += skip;
- row_width -= bytes_to_jump;
- }
- while (bytes_to_copy <= row_width);
-
- /* Get to here when the row_width truncates the final copy.
- * There will be 1-3 bytes left to copy, so don't try the
- * 16-bit loop below.
- */
- dp = (png_bytep)dp32;
- sp = (png_const_bytep)sp32;
- do
- *dp++ = *sp++;
- while (--row_width > 0);
- return;
- }
-
- /* Else do it in 16-bit quantities, but only if the size is
- * not too large.
- */
- else
- {
- png_uint_16p dp16 = png_aligncast(png_uint_16p, dp);
- png_const_uint_16p sp16 = png_aligncastconst(
- png_const_uint_16p, sp);
- size_t skip = (bytes_to_jump-bytes_to_copy) /
- (sizeof (png_uint_16));
-
- do
- {
- size_t c = bytes_to_copy;
- do
- {
- *dp16++ = *sp16++;
- c -= (sizeof (png_uint_16));
- }
- while (c > 0);
-
- if (row_width <= bytes_to_jump)
- return;
-
- dp16 += skip;
- sp16 += skip;
- row_width -= bytes_to_jump;
- }
- while (bytes_to_copy <= row_width);
-
- /* End of row - 1 byte left, bytes_to_copy > row_width: */
- dp = (png_bytep)dp16;
- sp = (png_const_bytep)sp16;
- do
- *dp++ = *sp++;
- while (--row_width > 0);
- return;
- }
- }
-#endif /* PNG_ALIGN_ code */
-
- /* The true default - use a memcpy: */
- for (;;)
- {
- memcpy(dp, sp, bytes_to_copy);
-
- if (row_width <= bytes_to_jump)
- return;
-
- sp += bytes_to_jump;
- dp += bytes_to_jump;
- row_width -= bytes_to_jump;
- if (bytes_to_copy > row_width)
- bytes_to_copy = row_width;
- }
- }
-
- /* NOT REACHED*/
- } /* pixel_depth >= 8 */
-
- /* Here if pixel_depth < 8 to check 'end_ptr' below. */
- }
- else
-#endif
-
- /* If here then the switch above wasn't used so just memcpy the whole row
- * from the temporary row buffer (notice that this overwrites the end of the
- * destination row if it is a partial byte.)
- */
- memcpy(dp, sp, PNG_ROWBYTES(pixel_depth, row_width));
-
- /* Restore the overwritten bits from the last byte if necessary. */
- if (end_ptr != NULL)
- *end_ptr = (png_byte)((end_byte & end_mask) | (*end_ptr & ~end_mask));
-}
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
-void /* PRIVATE */
-png_do_read_interlace(png_row_infop row_info, png_bytep row, int pass,
- png_uint_32 transformations /* Because these may affect the byte layout */)
-{
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
- /* Offset to next interlace block */
- static PNG_CONST int png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-
- png_debug(1, "in png_do_read_interlace");
- if (row != NULL && row_info != NULL)
- {
- png_uint_32 final_width;
-
- final_width = row_info->width * png_pass_inc[pass];
-
- switch (row_info->pixel_depth)
- {
- case 1:
- {
- png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 3);
- png_bytep dp = row + (png_size_t)((final_width - 1) >> 3);
- int sshift, dshift;
- int s_start, s_end, s_inc;
- int jstop = png_pass_inc[pass];
- png_byte v;
- png_uint_32 i;
- int j;
-
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (transformations & PNG_PACKSWAP)
- {
- sshift = (int)((row_info->width + 7) & 0x07);
- dshift = (int)((final_width + 7) & 0x07);
- s_start = 7;
- s_end = 0;
- s_inc = -1;
- }
-
- else
-#endif
- {
- sshift = 7 - (int)((row_info->width + 7) & 0x07);
- dshift = 7 - (int)((final_width + 7) & 0x07);
- s_start = 0;
- s_end = 7;
- s_inc = 1;
- }
-
- for (i = 0; i < row_info->width; i++)
- {
- v = (png_byte)((*sp >> sshift) & 0x01);
- for (j = 0; j < jstop; j++)
- {
- unsigned int tmp = *dp & (0x7f7f >> (7 - dshift));
- tmp |= v << dshift;
- *dp = (png_byte)(tmp & 0xff);
-
- if (dshift == s_end)
- {
- dshift = s_start;
- dp--;
- }
-
- else
- dshift += s_inc;
- }
-
- if (sshift == s_end)
- {
- sshift = s_start;
- sp--;
- }
-
- else
- sshift += s_inc;
- }
- break;
- }
-
- case 2:
- {
- png_bytep sp = row + (png_uint_32)((row_info->width - 1) >> 2);
- png_bytep dp = row + (png_uint_32)((final_width - 1) >> 2);
- int sshift, dshift;
- int s_start, s_end, s_inc;
- int jstop = png_pass_inc[pass];
- png_uint_32 i;
-
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (transformations & PNG_PACKSWAP)
- {
- sshift = (int)(((row_info->width + 3) & 0x03) << 1);
- dshift = (int)(((final_width + 3) & 0x03) << 1);
- s_start = 6;
- s_end = 0;
- s_inc = -2;
- }
-
- else
-#endif
- {
- sshift = (int)((3 - ((row_info->width + 3) & 0x03)) << 1);
- dshift = (int)((3 - ((final_width + 3) & 0x03)) << 1);
- s_start = 0;
- s_end = 6;
- s_inc = 2;
- }
-
- for (i = 0; i < row_info->width; i++)
- {
- png_byte v;
- int j;
-
- v = (png_byte)((*sp >> sshift) & 0x03);
- for (j = 0; j < jstop; j++)
- {
- unsigned int tmp = *dp & (0x3f3f >> (6 - dshift));
- tmp |= v << dshift;
- *dp = (png_byte)(tmp & 0xff);
-
- if (dshift == s_end)
- {
- dshift = s_start;
- dp--;
- }
-
- else
- dshift += s_inc;
- }
-
- if (sshift == s_end)
- {
- sshift = s_start;
- sp--;
- }
-
- else
- sshift += s_inc;
- }
- break;
- }
-
- case 4:
- {
- png_bytep sp = row + (png_size_t)((row_info->width - 1) >> 1);
- png_bytep dp = row + (png_size_t)((final_width - 1) >> 1);
- int sshift, dshift;
- int s_start, s_end, s_inc;
- png_uint_32 i;
- int jstop = png_pass_inc[pass];
-
-#ifdef PNG_READ_PACKSWAP_SUPPORTED
- if (transformations & PNG_PACKSWAP)
- {
- sshift = (int)(((row_info->width + 1) & 0x01) << 2);
- dshift = (int)(((final_width + 1) & 0x01) << 2);
- s_start = 4;
- s_end = 0;
- s_inc = -4;
- }
-
- else
-#endif
- {
- sshift = (int)((1 - ((row_info->width + 1) & 0x01)) << 2);
- dshift = (int)((1 - ((final_width + 1) & 0x01)) << 2);
- s_start = 0;
- s_end = 4;
- s_inc = 4;
- }
-
- for (i = 0; i < row_info->width; i++)
- {
- png_byte v = (png_byte)((*sp >> sshift) & 0x0f);
- int j;
-
- for (j = 0; j < jstop; j++)
- {
- unsigned int tmp = *dp & (0xf0f >> (4 - dshift));
- tmp |= v << dshift;
- *dp = (png_byte)(tmp & 0xff);
-
- if (dshift == s_end)
- {
- dshift = s_start;
- dp--;
- }
-
- else
- dshift += s_inc;
- }
-
- if (sshift == s_end)
- {
- sshift = s_start;
- sp--;
- }
-
- else
- sshift += s_inc;
- }
- break;
- }
-
- default:
- {
- png_size_t pixel_bytes = (row_info->pixel_depth >> 3);
-
- png_bytep sp = row + (png_size_t)(row_info->width - 1)
- * pixel_bytes;
-
- png_bytep dp = row + (png_size_t)(final_width - 1) * pixel_bytes;
-
- int jstop = png_pass_inc[pass];
- png_uint_32 i;
-
- for (i = 0; i < row_info->width; i++)
- {
- png_byte v[8]; /* SAFE; pixel_depth does not exceed 64 */
- int j;
-
- memcpy(v, sp, pixel_bytes);
-
- for (j = 0; j < jstop; j++)
- {
- memcpy(dp, v, pixel_bytes);
- dp -= pixel_bytes;
- }
-
- sp -= pixel_bytes;
- }
- break;
- }
- }
-
- row_info->width = final_width;
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth, final_width);
- }
-#ifndef PNG_READ_PACKSWAP_SUPPORTED
- PNG_UNUSED(transformations) /* Silence compiler warning */
-#endif
-}
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-
-static void
-png_read_filter_row_sub(png_row_infop row_info, png_bytep row,
- png_const_bytep prev_row)
-{
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
- unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
- png_bytep rp = row + bpp;
-
- PNG_UNUSED(prev_row)
-
- for (i = bpp; i < istop; i++)
- {
- *rp = (png_byte)(((int)(*rp) + (int)(*(rp-bpp))) & 0xff);
- rp++;
- }
-}
-
-static void
-png_read_filter_row_up(png_row_infop row_info, png_bytep row,
- png_const_bytep prev_row)
-{
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
- png_bytep rp = row;
- png_const_bytep pp = prev_row;
-
- for (i = 0; i < istop; i++)
- {
- *rp = (png_byte)(((int)(*rp) + (int)(*pp++)) & 0xff);
- rp++;
- }
-}
-
-static void
-png_read_filter_row_avg(png_row_infop row_info, png_bytep row,
- png_const_bytep prev_row)
-{
- png_size_t i;
- png_bytep rp = row;
- png_const_bytep pp = prev_row;
- unsigned int bpp = (row_info->pixel_depth + 7) >> 3;
- png_size_t istop = row_info->rowbytes - bpp;
-
- for (i = 0; i < bpp; i++)
- {
- *rp = (png_byte)(((int)(*rp) +
- ((int)(*pp++) / 2 )) & 0xff);
-
- rp++;
- }
-
- for (i = 0; i < istop; i++)
- {
- *rp = (png_byte)(((int)(*rp) +
- (int)(*pp++ + *(rp-bpp)) / 2 ) & 0xff);
-
- rp++;
- }
-}
-
-static void
-png_read_filter_row_paeth_1byte_pixel(png_row_infop row_info, png_bytep row,
- png_const_bytep prev_row)
-{
- png_bytep rp_end = row + row_info->rowbytes;
- int a, c;
-
- /* First pixel/byte */
- c = *prev_row++;
- a = *row + c;
- *row++ = (png_byte)a;
-
- /* Remainder */
- while (row < rp_end)
- {
- int b, pa, pb, pc, p;
-
- a &= 0xff; /* From previous iteration or start */
- b = *prev_row++;
-
- p = b - c;
- pc = a - c;
-
-# ifdef PNG_USE_ABS
- pa = abs(p);
- pb = abs(pc);
- pc = abs(p + pc);
-# else
- pa = p < 0 ? -p : p;
- pb = pc < 0 ? -pc : pc;
- pc = (p + pc) < 0 ? -(p + pc) : p + pc;
-# endif
-
- /* Find the best predictor, the least of pa, pb, pc favoring the earlier
- * ones in the case of a tie.
- */
- if (pb < pa) pa = pb, a = b;
- if (pc < pa) a = c;
-
- /* Calculate the current pixel in a, and move the previous row pixel to c
- * for the next time round the loop
- */
- c = b;
- a += *row;
- *row++ = (png_byte)a;
- }
-}
-
-static void
-png_read_filter_row_paeth_multibyte_pixel(png_row_infop row_info, png_bytep row,
- png_const_bytep prev_row)
-{
- int bpp = (row_info->pixel_depth + 7) >> 3;
- png_bytep rp_end = row + bpp;
-
- /* Process the first pixel in the row completely (this is the same as 'up'
- * because there is only one candidate predictor for the first row).
- */
- while (row < rp_end)
- {
- int a = *row + *prev_row++;
- *row++ = (png_byte)a;
- }
-
- /* Remainder */
- rp_end += row_info->rowbytes - bpp;
-
- while (row < rp_end)
- {
- int a, b, c, pa, pb, pc, p;
-
- c = *(prev_row - bpp);
- a = *(row - bpp);
- b = *prev_row++;
-
- p = b - c;
- pc = a - c;
-
-# ifdef PNG_USE_ABS
- pa = abs(p);
- pb = abs(pc);
- pc = abs(p + pc);
-# else
- pa = p < 0 ? -p : p;
- pb = pc < 0 ? -pc : pc;
- pc = (p + pc) < 0 ? -(p + pc) : p + pc;
-# endif
-
- if (pb < pa) pa = pb, a = b;
- if (pc < pa) a = c;
-
- c = b;
- a += *row;
- *row++ = (png_byte)a;
- }
-}
-
-static void
-png_init_filter_functions(png_structrp pp)
- /* This function is called once for every PNG image to set the
- * implementations required to reverse the filtering of PNG rows. Reversing
- * the filter is the first transformation performed on the row data. It is
- * performed in place, therefore an implementation can be selected based on
- * the image pixel format. If the implementation depends on image width then
- * take care to ensure that it works correctly if the image is interlaced -
- * interlacing causes the actual row width to vary.
- */
-{
- unsigned int bpp = (pp->pixel_depth + 7) >> 3;
-
- pp->read_filter[PNG_FILTER_VALUE_SUB-1] = png_read_filter_row_sub;
- pp->read_filter[PNG_FILTER_VALUE_UP-1] = png_read_filter_row_up;
- pp->read_filter[PNG_FILTER_VALUE_AVG-1] = png_read_filter_row_avg;
- if (bpp == 1)
- pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
- png_read_filter_row_paeth_1byte_pixel;
- else
- pp->read_filter[PNG_FILTER_VALUE_PAETH-1] =
- png_read_filter_row_paeth_multibyte_pixel;
-
-#ifdef PNG_FILTER_OPTIMIZATIONS
- /* To use this define PNG_FILTER_OPTIMIZATIONS as the name of a function to
- * call to install hardware optimizations for the above functions; simply
- * replace whatever elements of the pp->read_filter[] array with a hardware
- * specific (or, for that matter, generic) optimization.
- *
- * To see an example of this examine what configure.ac does when
- * --enable-arm-neon is specified on the command line.
- */
- PNG_FILTER_OPTIMIZATIONS(pp, bpp);
-#endif
-}
-
-void /* PRIVATE */
-png_read_filter_row(png_structrp pp, png_row_infop row_info, png_bytep row,
- png_const_bytep prev_row, int filter)
-{
- /* OPTIMIZATION: DO NOT MODIFY THIS FUNCTION, instead #define
- * PNG_FILTER_OPTIMIZATIONS to a function that overrides the generic
- * implementations. See png_init_filter_functions above.
- */
- if (pp->read_filter[0] == NULL)
- png_init_filter_functions(pp);
- if (filter > PNG_FILTER_VALUE_NONE && filter < PNG_FILTER_VALUE_LAST)
- pp->read_filter[filter-1](row_info, row, prev_row);
-}
-
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
-void /* PRIVATE */
-png_read_IDAT_data(png_structrp png_ptr, png_bytep output,
- png_alloc_size_t avail_out)
-{
- /* Loop reading IDATs and decompressing the result into output[avail_out] */
- png_ptr->zstream.next_out = output;
- png_ptr->zstream.avail_out = 0; /* safety: set below */
-
- if (output == NULL)
- avail_out = 0;
-
- do
- {
- int ret;
- png_byte tmpbuf[PNG_INFLATE_BUF_SIZE];
-
- if (png_ptr->zstream.avail_in == 0)
- {
- uInt avail_in;
- png_bytep buffer;
-
- while (png_ptr->idat_size == 0)
- {
- png_crc_finish(png_ptr, 0);
-
- png_ptr->idat_size = png_read_chunk_header(png_ptr);
- /* This is an error even in the 'check' case because the code just
- * consumed a non-IDAT header.
- */
- if (png_ptr->chunk_name != png_IDAT)
- png_error(png_ptr, "Not enough image data");
- }
-
- avail_in = png_ptr->IDAT_read_size;
-
- if (avail_in > png_ptr->idat_size)
- avail_in = (uInt)png_ptr->idat_size;
-
- /* A PNG with a gradually increasing IDAT size will defeat this attempt
- * to minimize memory usage by causing lots of re-allocs, but
- * realistically doing IDAT_read_size re-allocs is not likely to be a
- * big problem.
- */
- buffer = png_read_buffer(png_ptr, avail_in, 0/*error*/);
-
- png_crc_read(png_ptr, buffer, avail_in);
- png_ptr->idat_size -= avail_in;
-
- png_ptr->zstream.next_in = buffer;
- png_ptr->zstream.avail_in = avail_in;
- }
-
- /* And set up the output side. */
- if (output != NULL) /* standard read */
- {
- uInt out = ZLIB_IO_MAX;
-
- if (out > avail_out)
- out = (uInt)avail_out;
-
- avail_out -= out;
- png_ptr->zstream.avail_out = out;
- }
-
- else /* after last row, checking for end */
- {
- png_ptr->zstream.next_out = tmpbuf;
- png_ptr->zstream.avail_out = (sizeof tmpbuf);
- }
-
- /* Use NO_FLUSH; this gives zlib the maximum opportunity to optimize the
- * process. If the LZ stream is truncated the sequential reader will
- * terminally damage the stream, above, by reading the chunk header of the
- * following chunk (it then exits with png_error).
- *
- * TODO: deal more elegantly with truncated IDAT lists.
- */
- ret = inflate(&png_ptr->zstream, Z_NO_FLUSH);
-
- /* Take the unconsumed output back. */
- if (output != NULL)
- avail_out += png_ptr->zstream.avail_out;
-
- else /* avail_out counts the extra bytes */
- avail_out += (sizeof tmpbuf) - png_ptr->zstream.avail_out;
-
- png_ptr->zstream.avail_out = 0;
-
- if (ret == Z_STREAM_END)
- {
- /* Do this for safety; we won't read any more into this row. */
- png_ptr->zstream.next_out = NULL;
-
- png_ptr->mode |= PNG_AFTER_IDAT;
- png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
-
- if (png_ptr->zstream.avail_in > 0 || png_ptr->idat_size > 0)
- png_chunk_benign_error(png_ptr, "Extra compressed data");
- break;
- }
-
- if (ret != Z_OK)
- {
- png_zstream_error(png_ptr, ret);
-
- if (output != NULL)
- png_chunk_error(png_ptr, png_ptr->zstream.msg);
-
- else /* checking */
- {
- png_chunk_benign_error(png_ptr, png_ptr->zstream.msg);
- return;
- }
- }
- } while (avail_out > 0);
-
- if (avail_out > 0)
- {
- /* The stream ended before the image; this is the same as too few IDATs so
- * should be handled the same way.
- */
- if (output != NULL)
- png_error(png_ptr, "Not enough image data");
-
- else /* the deflate stream contained extra data */
- png_chunk_benign_error(png_ptr, "Too much image data");
- }
-}
-
-void /* PRIVATE */
-png_read_finish_IDAT(png_structrp png_ptr)
-{
- /* We don't need any more data and the stream should have ended, however the
- * LZ end code may actually not have been processed. In this case we must
- * read it otherwise stray unread IDAT data or, more likely, an IDAT chunk
- * may still remain to be consumed.
- */
- if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
- {
- /* The NULL causes png_read_IDAT_data to swallow any remaining bytes in
- * the compressed stream, but the stream may be damaged too, so even after
- * this call we may need to terminate the zstream ownership.
- */
- png_read_IDAT_data(png_ptr, NULL, 0);
- png_ptr->zstream.next_out = NULL; /* safety */
-
- /* Now clear everything out for safety; the following may not have been
- * done.
- */
- if (!(png_ptr->flags & PNG_FLAG_ZSTREAM_ENDED))
- {
- png_ptr->mode |= PNG_AFTER_IDAT;
- png_ptr->flags |= PNG_FLAG_ZSTREAM_ENDED;
- }
- }
-
- /* If the zstream has not been released do it now *and* terminate the reading
- * of the final IDAT chunk.
- */
- if (png_ptr->zowner == png_IDAT)
- {
- /* Always do this; the pointers otherwise point into the read buffer. */
- png_ptr->zstream.next_in = NULL;
- png_ptr->zstream.avail_in = 0;
-
- /* Now we no longer own the zstream. */
- png_ptr->zowner = 0;
-
- /* The slightly weird semantics of the sequential IDAT reading is that we
- * are always in or at the end of an IDAT chunk, so we always need to do a
- * crc_finish here. If idat_size is non-zero we also need to read the
- * spurious bytes at the end of the chunk now.
- */
- (void)png_crc_finish(png_ptr, png_ptr->idat_size);
- }
-}
-
-void /* PRIVATE */
-png_read_finish_row(png_structrp png_ptr)
-{
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
- /* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
-
- /* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-
- /* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
-
- /* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-
- png_debug(1, "in png_read_finish_row");
- png_ptr->row_number++;
- if (png_ptr->row_number < png_ptr->num_rows)
- return;
-
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- if (png_ptr->interlaced)
- {
- png_ptr->row_number = 0;
-
- /* TO DO: don't do this if prev_row isn't needed (requires
- * read-ahead of the next row's filter byte.
- */
- memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
-
- do
- {
- png_ptr->pass++;
-
- if (png_ptr->pass >= 7)
- break;
-
- png_ptr->iwidth = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
-
- if (!(png_ptr->transformations & PNG_INTERLACE))
- {
- png_ptr->num_rows = (png_ptr->height +
- png_pass_yinc[png_ptr->pass] - 1 -
- png_pass_ystart[png_ptr->pass]) /
- png_pass_yinc[png_ptr->pass];
- }
-
- else /* if (png_ptr->transformations & PNG_INTERLACE) */
- break; /* libpng deinterlacing sees every row */
-
- } while (png_ptr->num_rows == 0 || png_ptr->iwidth == 0);
-
- if (png_ptr->pass < 7)
- return;
- }
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
-
- /* Here after at the end of the last row of the last pass. */
- png_read_finish_IDAT(png_ptr);
-}
-#endif /* PNG_SEQUENTIAL_READ_SUPPORTED */
-
-void /* PRIVATE */
-png_read_start_row(png_structrp png_ptr)
-{
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
- /* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
-
- /* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-
- /* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
-
- /* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
-
- int max_pixel_depth;
- png_size_t row_bytes;
-
- png_debug(1, "in png_read_start_row");
-
-#ifdef PNG_READ_TRANSFORMS_SUPPORTED
- png_init_read_transformations(png_ptr);
-#endif
-#ifdef PNG_READ_INTERLACING_SUPPORTED
- if (png_ptr->interlaced)
- {
- if (!(png_ptr->transformations & PNG_INTERLACE))
- png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
- png_pass_ystart[0]) / png_pass_yinc[0];
-
- else
- png_ptr->num_rows = png_ptr->height;
-
- png_ptr->iwidth = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
- }
-
- else
-#endif /* PNG_READ_INTERLACING_SUPPORTED */
- {
- png_ptr->num_rows = png_ptr->height;
- png_ptr->iwidth = png_ptr->width;
- }
-
- max_pixel_depth = png_ptr->pixel_depth;
-
- /* WARNING: * png_read_transform_info (pngrtran.c) performs a simpliar set of
- * calculations to calculate the final pixel depth, then
- * png_do_read_transforms actually does the transforms. This means that the
- * code which effectively calculates this value is actually repeated in three
- * separate places. They must all match. Innocent changes to the order of
- * transformations can and will break libpng in a way that causes memory
- * overwrites.
- *
- * TODO: fix this.
- */
-#ifdef PNG_READ_PACK_SUPPORTED
- if ((png_ptr->transformations & PNG_PACK) && png_ptr->bit_depth < 8)
- max_pixel_depth = 8;
-#endif
-
-#ifdef PNG_READ_EXPAND_SUPPORTED
- if (png_ptr->transformations & PNG_EXPAND)
- {
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (png_ptr->num_trans)
- max_pixel_depth = 32;
-
- else
- max_pixel_depth = 24;
- }
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
- {
- if (max_pixel_depth < 8)
- max_pixel_depth = 8;
-
- if (png_ptr->num_trans)
- max_pixel_depth *= 2;
- }
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB)
- {
- if (png_ptr->num_trans)
- {
- max_pixel_depth *= 4;
- max_pixel_depth /= 3;
- }
- }
- }
-#endif
-
-#ifdef PNG_READ_EXPAND_16_SUPPORTED
- if (png_ptr->transformations & PNG_EXPAND_16)
- {
-# ifdef PNG_READ_EXPAND_SUPPORTED
- /* In fact it is an error if it isn't supported, but checking is
- * the safe way.
- */
- if (png_ptr->transformations & PNG_EXPAND)
- {
- if (png_ptr->bit_depth < 16)
- max_pixel_depth *= 2;
- }
- else
-# endif
- png_ptr->transformations &= ~PNG_EXPAND_16;
- }
-#endif
-
-#ifdef PNG_READ_FILLER_SUPPORTED
- if (png_ptr->transformations & (PNG_FILLER))
- {
- if (png_ptr->color_type == PNG_COLOR_TYPE_GRAY)
- {
- if (max_pixel_depth <= 8)
- max_pixel_depth = 16;
-
- else
- max_pixel_depth = 32;
- }
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB ||
- png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (max_pixel_depth <= 32)
- max_pixel_depth = 32;
-
- else
- max_pixel_depth = 64;
- }
- }
-#endif
-
-#ifdef PNG_READ_GRAY_TO_RGB_SUPPORTED
- if (png_ptr->transformations & PNG_GRAY_TO_RGB)
- {
- if (
-#ifdef PNG_READ_EXPAND_SUPPORTED
- (png_ptr->num_trans && (png_ptr->transformations & PNG_EXPAND)) ||
-#endif
-#ifdef PNG_READ_FILLER_SUPPORTED
- (png_ptr->transformations & (PNG_FILLER)) ||
-#endif
- png_ptr->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- {
- if (max_pixel_depth <= 16)
- max_pixel_depth = 32;
-
- else
- max_pixel_depth = 64;
- }
-
- else
- {
- if (max_pixel_depth <= 8)
- {
- if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- max_pixel_depth = 32;
-
- else
- max_pixel_depth = 24;
- }
-
- else if (png_ptr->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- max_pixel_depth = 64;
-
- else
- max_pixel_depth = 48;
- }
- }
-#endif
-
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) && \
-defined(PNG_USER_TRANSFORM_PTR_SUPPORTED)
- if (png_ptr->transformations & PNG_USER_TRANSFORM)
- {
- int user_pixel_depth = png_ptr->user_transform_depth *
- png_ptr->user_transform_channels;
-
- if (user_pixel_depth > max_pixel_depth)
- max_pixel_depth = user_pixel_depth;
- }
-#endif
-
- /* This value is stored in png_struct and double checked in the row read
- * code.
- */
- png_ptr->maximum_pixel_depth = (png_byte)max_pixel_depth;
- png_ptr->transformed_pixel_depth = 0; /* calculated on demand */
-
- /* Align the width on the next larger 8 pixels. Mainly used
- * for interlacing
- */
- row_bytes = ((png_ptr->width + 7) & ~((png_uint_32)7));
- /* Calculate the maximum bytes needed, adding a byte and a pixel
- * for safety's sake
- */
- row_bytes = PNG_ROWBYTES(max_pixel_depth, row_bytes) +
- 1 + ((max_pixel_depth + 7) >> 3);
-
-#ifdef PNG_MAX_MALLOC_64K
- if (row_bytes > (png_uint_32)65536L)
- png_error(png_ptr, "This image requires a row greater than 64KB");
-#endif
-
- if (row_bytes + 48 > png_ptr->old_big_row_buf_size)
- {
- png_free(png_ptr, png_ptr->big_row_buf);
- png_free(png_ptr, png_ptr->big_prev_row);
-
- if (png_ptr->interlaced)
- png_ptr->big_row_buf = (png_bytep)png_calloc(png_ptr,
- row_bytes + 48);
-
- else
- png_ptr->big_row_buf = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
-
- png_ptr->big_prev_row = (png_bytep)png_malloc(png_ptr, row_bytes + 48);
-
-#ifdef PNG_ALIGNED_MEMORY_SUPPORTED
- /* Use 16-byte aligned memory for row_buf with at least 16 bytes
- * of padding before and after row_buf; treat prev_row similarly.
- * NOTE: the alignment is to the start of the pixels, one beyond the start
- * of the buffer, because of the filter byte. Prior to libpng 1.5.6 this
- * was incorrect; the filter byte was aligned, which had the exact
- * opposite effect of that intended.
- */
- {
- png_bytep temp = png_ptr->big_row_buf + 32;
- int extra = (int)((temp - (png_bytep)0) & 0x0f);
- png_ptr->row_buf = temp - extra - 1/*filter byte*/;
-
- temp = png_ptr->big_prev_row + 32;
- extra = (int)((temp - (png_bytep)0) & 0x0f);
- png_ptr->prev_row = temp - extra - 1/*filter byte*/;
- }
-
-#else
- /* Use 31 bytes of padding before and 17 bytes after row_buf. */
- png_ptr->row_buf = png_ptr->big_row_buf + 31;
- png_ptr->prev_row = png_ptr->big_prev_row + 31;
-#endif
- png_ptr->old_big_row_buf_size = row_bytes + 48;
- }
-
-#ifdef PNG_MAX_MALLOC_64K
- if (png_ptr->rowbytes > 65535)
- png_error(png_ptr, "This image requires a row greater than 64KB");
-
-#endif
- if (png_ptr->rowbytes > (PNG_SIZE_MAX - 1))
- png_error(png_ptr, "Row has too many bytes to allocate in memory");
-
- memset(png_ptr->prev_row, 0, png_ptr->rowbytes + 1);
-
- png_debug1(3, "width = %u,", png_ptr->width);
- png_debug1(3, "height = %u,", png_ptr->height);
- png_debug1(3, "iwidth = %u,", png_ptr->iwidth);
- png_debug1(3, "num_rows = %u,", png_ptr->num_rows);
- png_debug1(3, "rowbytes = %lu,", (unsigned long)png_ptr->rowbytes);
- png_debug1(3, "irowbytes = %lu",
- (unsigned long)PNG_ROWBYTES(png_ptr->pixel_depth, png_ptr->iwidth) + 1);
-
- /* The sequential reader needs a buffer for IDAT, but the progressive reader
- * does not, so free the read buffer now regardless; the sequential reader
- * reallocates it on demand.
- */
- if (png_ptr->read_buffer)
- {
- png_bytep buffer = png_ptr->read_buffer;
-
- png_ptr->read_buffer_size = 0;
- png_ptr->read_buffer = NULL;
- png_free(png_ptr, buffer);
- }
-
- /* Finally claim the zstream for the inflate of the IDAT data, use the bits
- * value from the stream (note that this will result in a fatal error if the
- * IDAT stream has a bogus deflate header window_bits value, but this should
- * not be happening any longer!)
- */
- if (png_inflate_claim(png_ptr, png_IDAT) != Z_OK)
- png_error(png_ptr, png_ptr->zstream.msg);
-
- png_ptr->flags |= PNG_FLAG_ROW_INIT;
-}
-#endif /* PNG_READ_SUPPORTED */
+++ /dev/null
-
-/* pngset.c - storage of image information into info struct
- *
- * Last changed in libpng 1.6.3 [July 18, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * The functions here are used during reads to store data from the file
- * into the info struct, and during writes to store application data
- * into the info struct for writing into the file. This abstracts the
- * info struct and allows us to change the structure in the future.
- */
-
-#include "pngpriv.h"
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-
-#ifdef PNG_bKGD_SUPPORTED
-void PNGAPI
-png_set_bKGD(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_color_16p background)
-{
- png_debug1(1, "in %s storage function", "bKGD");
-
- if (png_ptr == NULL || info_ptr == NULL || background == NULL)
- return;
-
- info_ptr->background = *background;
- info_ptr->valid |= PNG_INFO_bKGD;
-}
-#endif
-
-#ifdef PNG_cHRM_SUPPORTED
-void PNGFAPI
-png_set_cHRM_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
- png_fixed_point white_x, png_fixed_point white_y, png_fixed_point red_x,
- png_fixed_point red_y, png_fixed_point green_x, png_fixed_point green_y,
- png_fixed_point blue_x, png_fixed_point blue_y)
-{
- png_xy xy;
-
- png_debug1(1, "in %s storage function", "cHRM fixed");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- xy.redx = red_x;
- xy.redy = red_y;
- xy.greenx = green_x;
- xy.greeny = green_y;
- xy.bluex = blue_x;
- xy.bluey = blue_y;
- xy.whitex = white_x;
- xy.whitey = white_y;
-
- if (png_colorspace_set_chromaticities(png_ptr, &info_ptr->colorspace, &xy,
- 2/* override with app values*/))
- info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
-
- png_colorspace_sync_info(png_ptr, info_ptr);
-}
-
-void PNGFAPI
-png_set_cHRM_XYZ_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
- png_fixed_point int_red_X, png_fixed_point int_red_Y,
- png_fixed_point int_red_Z, png_fixed_point int_green_X,
- png_fixed_point int_green_Y, png_fixed_point int_green_Z,
- png_fixed_point int_blue_X, png_fixed_point int_blue_Y,
- png_fixed_point int_blue_Z)
-{
- png_XYZ XYZ;
-
- png_debug1(1, "in %s storage function", "cHRM XYZ fixed");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- XYZ.red_X = int_red_X;
- XYZ.red_Y = int_red_Y;
- XYZ.red_Z = int_red_Z;
- XYZ.green_X = int_green_X;
- XYZ.green_Y = int_green_Y;
- XYZ.green_Z = int_green_Z;
- XYZ.blue_X = int_blue_X;
- XYZ.blue_Y = int_blue_Y;
- XYZ.blue_Z = int_blue_Z;
-
- if (png_colorspace_set_endpoints(png_ptr, &info_ptr->colorspace, &XYZ, 2))
- info_ptr->colorspace.flags |= PNG_COLORSPACE_FROM_cHRM;
-
- png_colorspace_sync_info(png_ptr, info_ptr);
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
- double white_x, double white_y, double red_x, double red_y,
- double green_x, double green_y, double blue_x, double blue_y)
-{
- png_set_cHRM_fixed(png_ptr, info_ptr,
- png_fixed(png_ptr, white_x, "cHRM White X"),
- png_fixed(png_ptr, white_y, "cHRM White Y"),
- png_fixed(png_ptr, red_x, "cHRM Red X"),
- png_fixed(png_ptr, red_y, "cHRM Red Y"),
- png_fixed(png_ptr, green_x, "cHRM Green X"),
- png_fixed(png_ptr, green_y, "cHRM Green Y"),
- png_fixed(png_ptr, blue_x, "cHRM Blue X"),
- png_fixed(png_ptr, blue_y, "cHRM Blue Y"));
-}
-
-void PNGAPI
-png_set_cHRM_XYZ(png_const_structrp png_ptr, png_inforp info_ptr, double red_X,
- double red_Y, double red_Z, double green_X, double green_Y, double green_Z,
- double blue_X, double blue_Y, double blue_Z)
-{
- png_set_cHRM_XYZ_fixed(png_ptr, info_ptr,
- png_fixed(png_ptr, red_X, "cHRM Red X"),
- png_fixed(png_ptr, red_Y, "cHRM Red Y"),
- png_fixed(png_ptr, red_Z, "cHRM Red Z"),
- png_fixed(png_ptr, green_X, "cHRM Red X"),
- png_fixed(png_ptr, green_Y, "cHRM Red Y"),
- png_fixed(png_ptr, green_Z, "cHRM Red Z"),
- png_fixed(png_ptr, blue_X, "cHRM Red X"),
- png_fixed(png_ptr, blue_Y, "cHRM Red Y"),
- png_fixed(png_ptr, blue_Z, "cHRM Red Z"));
-}
-# endif /* PNG_FLOATING_POINT_SUPPORTED */
-
-#endif /* PNG_cHRM_SUPPORTED */
-
-#ifdef PNG_gAMA_SUPPORTED
-void PNGFAPI
-png_set_gAMA_fixed(png_const_structrp png_ptr, png_inforp info_ptr,
- png_fixed_point file_gamma)
-{
- png_debug1(1, "in %s storage function", "gAMA");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- png_colorspace_set_gamma(png_ptr, &info_ptr->colorspace, file_gamma);
- png_colorspace_sync_info(png_ptr, info_ptr);
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_gAMA(png_const_structrp png_ptr, png_inforp info_ptr, double file_gamma)
-{
- png_set_gAMA_fixed(png_ptr, info_ptr, png_fixed(png_ptr, file_gamma,
- "png_set_gAMA"));
-}
-# endif
-#endif
-
-#ifdef PNG_hIST_SUPPORTED
-void PNGAPI
-png_set_hIST(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_uint_16p hist)
-{
- int i;
-
- png_debug1(1, "in %s storage function", "hIST");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (info_ptr->num_palette == 0 || info_ptr->num_palette
- > PNG_MAX_PALETTE_LENGTH)
- {
- png_warning(png_ptr,
- "Invalid palette size, hIST allocation skipped");
-
- return;
- }
-
- png_free_data(png_ptr, info_ptr, PNG_FREE_HIST, 0);
-
- /* Changed from info->num_palette to PNG_MAX_PALETTE_LENGTH in
- * version 1.2.1
- */
- info_ptr->hist = png_voidcast(png_uint_16p, png_malloc_warn(png_ptr,
- PNG_MAX_PALETTE_LENGTH * (sizeof (png_uint_16))));
-
- if (info_ptr->hist == NULL)
- {
- png_warning(png_ptr, "Insufficient memory for hIST chunk data");
- return;
- }
-
- info_ptr->free_me |= PNG_FREE_HIST;
-
- for (i = 0; i < info_ptr->num_palette; i++)
- info_ptr->hist[i] = hist[i];
-
- info_ptr->valid |= PNG_INFO_hIST;
-}
-#endif
-
-void PNGAPI
-png_set_IHDR(png_const_structrp png_ptr, png_inforp info_ptr,
- png_uint_32 width, png_uint_32 height, int bit_depth,
- int color_type, int interlace_type, int compression_type,
- int filter_type)
-{
- png_debug1(1, "in %s storage function", "IHDR");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- info_ptr->width = width;
- info_ptr->height = height;
- info_ptr->bit_depth = (png_byte)bit_depth;
- info_ptr->color_type = (png_byte)color_type;
- info_ptr->compression_type = (png_byte)compression_type;
- info_ptr->filter_type = (png_byte)filter_type;
- info_ptr->interlace_type = (png_byte)interlace_type;
-
- png_check_IHDR (png_ptr, info_ptr->width, info_ptr->height,
- info_ptr->bit_depth, info_ptr->color_type, info_ptr->interlace_type,
- info_ptr->compression_type, info_ptr->filter_type);
-
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- info_ptr->channels = 1;
-
- else if (info_ptr->color_type & PNG_COLOR_MASK_COLOR)
- info_ptr->channels = 3;
-
- else
- info_ptr->channels = 1;
-
- if (info_ptr->color_type & PNG_COLOR_MASK_ALPHA)
- info_ptr->channels++;
-
- info_ptr->pixel_depth = (png_byte)(info_ptr->channels * info_ptr->bit_depth);
-
- info_ptr->rowbytes = PNG_ROWBYTES(info_ptr->pixel_depth, width);
-}
-
-#ifdef PNG_oFFs_SUPPORTED
-void PNGAPI
-png_set_oFFs(png_const_structrp png_ptr, png_inforp info_ptr,
- png_int_32 offset_x, png_int_32 offset_y, int unit_type)
-{
- png_debug1(1, "in %s storage function", "oFFs");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- info_ptr->x_offset = offset_x;
- info_ptr->y_offset = offset_y;
- info_ptr->offset_unit_type = (png_byte)unit_type;
- info_ptr->valid |= PNG_INFO_oFFs;
-}
-#endif
-
-#ifdef PNG_pCAL_SUPPORTED
-void PNGAPI
-png_set_pCAL(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_charp purpose, png_int_32 X0, png_int_32 X1, int type,
- int nparams, png_const_charp units, png_charpp params)
-{
- png_size_t length;
- int i;
-
- png_debug1(1, "in %s storage function", "pCAL");
-
- if (png_ptr == NULL || info_ptr == NULL || purpose == NULL || units == NULL
- || (nparams > 0 && params == NULL))
- return;
-
- length = strlen(purpose) + 1;
- png_debug1(3, "allocating purpose for info (%lu bytes)",
- (unsigned long)length);
-
- /* TODO: validate format of calibration name and unit name */
-
- /* Check that the type matches the specification. */
- if (type < 0 || type > 3)
- png_error(png_ptr, "Invalid pCAL equation type");
-
- if (nparams < 0 || nparams > 255)
- png_error(png_ptr, "Invalid pCAL parameter count");
-
- /* Validate params[nparams] */
- for (i=0; i<nparams; ++i)
- if (params[i] == NULL ||
- !png_check_fp_string(params[i], strlen(params[i])))
- png_error(png_ptr, "Invalid format for pCAL parameter");
-
- info_ptr->pcal_purpose = png_voidcast(png_charp,
- png_malloc_warn(png_ptr, length));
-
- if (info_ptr->pcal_purpose == NULL)
- {
- png_warning(png_ptr, "Insufficient memory for pCAL purpose");
- return;
- }
-
- memcpy(info_ptr->pcal_purpose, purpose, length);
-
- png_debug(3, "storing X0, X1, type, and nparams in info");
- info_ptr->pcal_X0 = X0;
- info_ptr->pcal_X1 = X1;
- info_ptr->pcal_type = (png_byte)type;
- info_ptr->pcal_nparams = (png_byte)nparams;
-
- length = strlen(units) + 1;
- png_debug1(3, "allocating units for info (%lu bytes)",
- (unsigned long)length);
-
- info_ptr->pcal_units = png_voidcast(png_charp,
- png_malloc_warn(png_ptr, length));
-
- if (info_ptr->pcal_units == NULL)
- {
- png_warning(png_ptr, "Insufficient memory for pCAL units");
- return;
- }
-
- memcpy(info_ptr->pcal_units, units, length);
-
- info_ptr->pcal_params = png_voidcast(png_charpp, png_malloc_warn(png_ptr,
- (png_size_t)((nparams + 1) * (sizeof (png_charp)))));
-
- if (info_ptr->pcal_params == NULL)
- {
- png_warning(png_ptr, "Insufficient memory for pCAL params");
- return;
- }
-
- memset(info_ptr->pcal_params, 0, (nparams + 1) * (sizeof (png_charp)));
-
- for (i = 0; i < nparams; i++)
- {
- length = strlen(params[i]) + 1;
- png_debug2(3, "allocating parameter %d for info (%lu bytes)", i,
- (unsigned long)length);
-
- info_ptr->pcal_params[i] = (png_charp)png_malloc_warn(png_ptr, length);
-
- if (info_ptr->pcal_params[i] == NULL)
- {
- png_warning(png_ptr, "Insufficient memory for pCAL parameter");
- return;
- }
-
- memcpy(info_ptr->pcal_params[i], params[i], length);
- }
-
- info_ptr->valid |= PNG_INFO_pCAL;
- info_ptr->free_me |= PNG_FREE_PCAL;
-}
-#endif
-
-#ifdef PNG_sCAL_SUPPORTED
-void PNGAPI
-png_set_sCAL_s(png_const_structrp png_ptr, png_inforp info_ptr,
- int unit, png_const_charp swidth, png_const_charp sheight)
-{
- png_size_t lengthw = 0, lengthh = 0;
-
- png_debug1(1, "in %s storage function", "sCAL");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- /* Double check the unit (should never get here with an invalid
- * unit unless this is an API call.)
- */
- if (unit != 1 && unit != 2)
- png_error(png_ptr, "Invalid sCAL unit");
-
- if (swidth == NULL || (lengthw = strlen(swidth)) == 0 ||
- swidth[0] == 45 /* '-' */ || !png_check_fp_string(swidth, lengthw))
- png_error(png_ptr, "Invalid sCAL width");
-
- if (sheight == NULL || (lengthh = strlen(sheight)) == 0 ||
- sheight[0] == 45 /* '-' */ || !png_check_fp_string(sheight, lengthh))
- png_error(png_ptr, "Invalid sCAL height");
-
- info_ptr->scal_unit = (png_byte)unit;
-
- ++lengthw;
-
- png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthw);
-
- info_ptr->scal_s_width = png_voidcast(png_charp,
- png_malloc_warn(png_ptr, lengthw));
-
- if (info_ptr->scal_s_width == NULL)
- {
- png_warning(png_ptr, "Memory allocation failed while processing sCAL");
- return;
- }
-
- memcpy(info_ptr->scal_s_width, swidth, lengthw);
-
- ++lengthh;
-
- png_debug1(3, "allocating unit for info (%u bytes)", (unsigned int)lengthh);
-
- info_ptr->scal_s_height = png_voidcast(png_charp,
- png_malloc_warn(png_ptr, lengthh));
-
- if (info_ptr->scal_s_height == NULL)
- {
- png_free (png_ptr, info_ptr->scal_s_width);
- info_ptr->scal_s_width = NULL;
-
- png_warning(png_ptr, "Memory allocation failed while processing sCAL");
- return;
- }
-
- memcpy(info_ptr->scal_s_height, sheight, lengthh);
-
- info_ptr->valid |= PNG_INFO_sCAL;
- info_ptr->free_me |= PNG_FREE_SCAL;
-}
-
-# ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_sCAL(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
- double width, double height)
-{
- png_debug1(1, "in %s storage function", "sCAL");
-
- /* Check the arguments. */
- if (width <= 0)
- png_warning(png_ptr, "Invalid sCAL width ignored");
-
- else if (height <= 0)
- png_warning(png_ptr, "Invalid sCAL height ignored");
-
- else
- {
- /* Convert 'width' and 'height' to ASCII. */
- char swidth[PNG_sCAL_MAX_DIGITS+1];
- char sheight[PNG_sCAL_MAX_DIGITS+1];
-
- png_ascii_from_fp(png_ptr, swidth, (sizeof swidth), width,
- PNG_sCAL_PRECISION);
- png_ascii_from_fp(png_ptr, sheight, (sizeof sheight), height,
- PNG_sCAL_PRECISION);
-
- png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
- }
-}
-# endif
-
-# ifdef PNG_FIXED_POINT_SUPPORTED
-void PNGAPI
-png_set_sCAL_fixed(png_const_structrp png_ptr, png_inforp info_ptr, int unit,
- png_fixed_point width, png_fixed_point height)
-{
- png_debug1(1, "in %s storage function", "sCAL");
-
- /* Check the arguments. */
- if (width <= 0)
- png_warning(png_ptr, "Invalid sCAL width ignored");
-
- else if (height <= 0)
- png_warning(png_ptr, "Invalid sCAL height ignored");
-
- else
- {
- /* Convert 'width' and 'height' to ASCII. */
- char swidth[PNG_sCAL_MAX_DIGITS+1];
- char sheight[PNG_sCAL_MAX_DIGITS+1];
-
- png_ascii_from_fixed(png_ptr, swidth, (sizeof swidth), width);
- png_ascii_from_fixed(png_ptr, sheight, (sizeof sheight), height);
-
- png_set_sCAL_s(png_ptr, info_ptr, unit, swidth, sheight);
- }
-}
-# endif
-#endif
-
-#ifdef PNG_pHYs_SUPPORTED
-void PNGAPI
-png_set_pHYs(png_const_structrp png_ptr, png_inforp info_ptr,
- png_uint_32 res_x, png_uint_32 res_y, int unit_type)
-{
- png_debug1(1, "in %s storage function", "pHYs");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- info_ptr->x_pixels_per_unit = res_x;
- info_ptr->y_pixels_per_unit = res_y;
- info_ptr->phys_unit_type = (png_byte)unit_type;
- info_ptr->valid |= PNG_INFO_pHYs;
-}
-#endif
-
-void PNGAPI
-png_set_PLTE(png_structrp png_ptr, png_inforp info_ptr,
- png_const_colorp palette, int num_palette)
-{
-
- png_debug1(1, "in %s storage function", "PLTE");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (num_palette < 0 || num_palette > PNG_MAX_PALETTE_LENGTH)
- {
- if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- png_error(png_ptr, "Invalid palette length");
-
- else
- {
- png_warning(png_ptr, "Invalid palette length");
- return;
- }
- }
-
- if ((num_palette > 0 && palette == NULL) ||
- (num_palette == 0
-# ifdef PNG_MNG_FEATURES_SUPPORTED
- && (png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) == 0
-# endif
- ))
- {
- png_chunk_report(png_ptr, "Invalid palette", PNG_CHUNK_ERROR);
- return;
- }
-
- /* It may not actually be necessary to set png_ptr->palette here;
- * we do it for backward compatibility with the way the png_handle_tRNS
- * function used to do the allocation.
- *
- * 1.6.0: the above statement appears to be incorrect; something has to set
- * the palette inside png_struct on read.
- */
- png_free_data(png_ptr, info_ptr, PNG_FREE_PLTE, 0);
-
- /* Changed in libpng-1.2.1 to allocate PNG_MAX_PALETTE_LENGTH instead
- * of num_palette entries, in case of an invalid PNG file that has
- * too-large sample values.
- */
- png_ptr->palette = png_voidcast(png_colorp, png_calloc(png_ptr,
- PNG_MAX_PALETTE_LENGTH * (sizeof (png_color))));
-
- if (num_palette > 0)
- memcpy(png_ptr->palette, palette, num_palette * (sizeof (png_color)));
- info_ptr->palette = png_ptr->palette;
- info_ptr->num_palette = png_ptr->num_palette = (png_uint_16)num_palette;
-
- info_ptr->free_me |= PNG_FREE_PLTE;
-
- info_ptr->valid |= PNG_INFO_PLTE;
-}
-
-#ifdef PNG_sBIT_SUPPORTED
-void PNGAPI
-png_set_sBIT(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_color_8p sig_bit)
-{
- png_debug1(1, "in %s storage function", "sBIT");
-
- if (png_ptr == NULL || info_ptr == NULL || sig_bit == NULL)
- return;
-
- info_ptr->sig_bit = *sig_bit;
- info_ptr->valid |= PNG_INFO_sBIT;
-}
-#endif
-
-#ifdef PNG_sRGB_SUPPORTED
-void PNGAPI
-png_set_sRGB(png_const_structrp png_ptr, png_inforp info_ptr, int srgb_intent)
-{
- png_debug1(1, "in %s storage function", "sRGB");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- (void)png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent);
- png_colorspace_sync_info(png_ptr, info_ptr);
-}
-
-void PNGAPI
-png_set_sRGB_gAMA_and_cHRM(png_const_structrp png_ptr, png_inforp info_ptr,
- int srgb_intent)
-{
- png_debug1(1, "in %s storage function", "sRGB_gAMA_and_cHRM");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (png_colorspace_set_sRGB(png_ptr, &info_ptr->colorspace, srgb_intent))
- {
- /* This causes the gAMA and cHRM to be written too */
- info_ptr->colorspace.flags |=
- PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM;
- }
-
- png_colorspace_sync_info(png_ptr, info_ptr);
-}
-#endif /* sRGB */
-
-
-#ifdef PNG_iCCP_SUPPORTED
-void PNGAPI
-png_set_iCCP(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_charp name, int compression_type,
- png_const_bytep profile, png_uint_32 proflen)
-{
- png_charp new_iccp_name;
- png_bytep new_iccp_profile;
- png_size_t length;
-
- png_debug1(1, "in %s storage function", "iCCP");
-
- if (png_ptr == NULL || info_ptr == NULL || name == NULL || profile == NULL)
- return;
-
- if (compression_type != PNG_COMPRESSION_TYPE_BASE)
- png_app_error(png_ptr, "Invalid iCCP compression method");
-
- /* Set the colorspace first because this validates the profile; do not
- * override previously set app cHRM or gAMA here (because likely as not the
- * application knows better than libpng what the correct values are.) Pass
- * the info_ptr color_type field to png_colorspace_set_ICC because in the
- * write case it has not yet been stored in png_ptr.
- */
- {
- int result = png_colorspace_set_ICC(png_ptr, &info_ptr->colorspace, name,
- proflen, profile, info_ptr->color_type);
-
- png_colorspace_sync_info(png_ptr, info_ptr);
-
- /* Don't do any of the copying if the profile was bad, or inconsistent. */
- if (!result)
- return;
-
- /* But do write the gAMA and cHRM chunks from the profile. */
- info_ptr->colorspace.flags |=
- PNG_COLORSPACE_FROM_gAMA|PNG_COLORSPACE_FROM_cHRM;
- }
-
- length = strlen(name)+1;
- new_iccp_name = png_voidcast(png_charp, png_malloc_warn(png_ptr, length));
-
- if (new_iccp_name == NULL)
- {
- png_benign_error(png_ptr, "Insufficient memory to process iCCP chunk");
- return;
- }
-
- memcpy(new_iccp_name, name, length);
- new_iccp_profile = png_voidcast(png_bytep,
- png_malloc_warn(png_ptr, proflen));
-
- if (new_iccp_profile == NULL)
- {
- png_free(png_ptr, new_iccp_name);
- png_benign_error(png_ptr,
- "Insufficient memory to process iCCP profile");
- return;
- }
-
- memcpy(new_iccp_profile, profile, proflen);
-
- png_free_data(png_ptr, info_ptr, PNG_FREE_ICCP, 0);
-
- info_ptr->iccp_proflen = proflen;
- info_ptr->iccp_name = new_iccp_name;
- info_ptr->iccp_profile = new_iccp_profile;
- info_ptr->free_me |= PNG_FREE_ICCP;
- info_ptr->valid |= PNG_INFO_iCCP;
-}
-#endif
-
-#ifdef PNG_TEXT_SUPPORTED
-void PNGAPI
-png_set_text(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_textp text_ptr, int num_text)
-{
- int ret;
- ret = png_set_text_2(png_ptr, info_ptr, text_ptr, num_text);
-
- if (ret)
- png_error(png_ptr, "Insufficient memory to store text");
-}
-
-int /* PRIVATE */
-png_set_text_2(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_textp text_ptr, int num_text)
-{
- int i;
-
- png_debug1(1, "in %lx storage function", png_ptr == NULL ? "unexpected" :
- (unsigned long)png_ptr->chunk_name);
-
- if (png_ptr == NULL || info_ptr == NULL || num_text <= 0 || text_ptr == NULL)
- return(0);
-
- /* Make sure we have enough space in the "text" array in info_struct
- * to hold all of the incoming text_ptr objects. This compare can't overflow
- * because max_text >= num_text (anyway, subtract of two positive integers
- * can't overflow in any case.)
- */
- if (num_text > info_ptr->max_text - info_ptr->num_text)
- {
- int old_num_text = info_ptr->num_text;
- int max_text;
- png_textp new_text = NULL;
-
- /* Calculate an appropriate max_text, checking for overflow. */
- max_text = old_num_text;
- if (num_text <= INT_MAX - max_text)
- {
- max_text += num_text;
-
- /* Round up to a multiple of 8 */
- if (max_text < INT_MAX-8)
- max_text = (max_text + 8) & ~0x7;
-
- else
- max_text = INT_MAX;
-
- /* Now allocate a new array and copy the old members in, this does all
- * the overflow checks.
- */
- new_text = png_voidcast(png_textp,png_realloc_array(png_ptr,
- info_ptr->text, old_num_text, max_text-old_num_text,
- sizeof *new_text));
- }
-
- if (new_text == NULL)
- {
- png_chunk_report(png_ptr, "too many text chunks",
- PNG_CHUNK_WRITE_ERROR);
- return 1;
- }
-
- png_free(png_ptr, info_ptr->text);
-
- info_ptr->text = new_text;
- info_ptr->free_me |= PNG_FREE_TEXT;
- info_ptr->max_text = max_text;
- /* num_text is adjusted below as the entries are copied in */
-
- png_debug1(3, "allocated %d entries for info_ptr->text", max_text);
- }
-
- for (i = 0; i < num_text; i++)
- {
- size_t text_length, key_len;
- size_t lang_len, lang_key_len;
- png_textp textp = &(info_ptr->text[info_ptr->num_text]);
-
- if (text_ptr[i].key == NULL)
- continue;
-
- if (text_ptr[i].compression < PNG_TEXT_COMPRESSION_NONE ||
- text_ptr[i].compression >= PNG_TEXT_COMPRESSION_LAST)
- {
- png_chunk_report(png_ptr, "text compression mode is out of range",
- PNG_CHUNK_WRITE_ERROR);
- continue;
- }
-
- key_len = strlen(text_ptr[i].key);
-
- if (text_ptr[i].compression <= 0)
- {
- lang_len = 0;
- lang_key_len = 0;
- }
-
- else
-# ifdef PNG_iTXt_SUPPORTED
- {
- /* Set iTXt data */
-
- if (text_ptr[i].lang != NULL)
- lang_len = strlen(text_ptr[i].lang);
-
- else
- lang_len = 0;
-
- if (text_ptr[i].lang_key != NULL)
- lang_key_len = strlen(text_ptr[i].lang_key);
-
- else
- lang_key_len = 0;
- }
-# else /* PNG_iTXt_SUPPORTED */
- {
- png_chunk_report(png_ptr, "iTXt chunk not supported",
- PNG_CHUNK_WRITE_ERROR);
- continue;
- }
-# endif
-
- if (text_ptr[i].text == NULL || text_ptr[i].text[0] == '\0')
- {
- text_length = 0;
-# ifdef PNG_iTXt_SUPPORTED
- if (text_ptr[i].compression > 0)
- textp->compression = PNG_ITXT_COMPRESSION_NONE;
-
- else
-# endif
- textp->compression = PNG_TEXT_COMPRESSION_NONE;
- }
-
- else
- {
- text_length = strlen(text_ptr[i].text);
- textp->compression = text_ptr[i].compression;
- }
-
- textp->key = png_voidcast(png_charp,png_malloc_base(png_ptr,
- key_len + text_length + lang_len + lang_key_len + 4));
-
- if (textp->key == NULL)
- {
- png_chunk_report(png_ptr, "text chunk: out of memory",
- PNG_CHUNK_WRITE_ERROR);
- return 1;
- }
-
- png_debug2(2, "Allocated %lu bytes at %p in png_set_text",
- (unsigned long)(png_uint_32)
- (key_len + lang_len + lang_key_len + text_length + 4),
- textp->key);
-
- memcpy(textp->key, text_ptr[i].key, key_len);
- *(textp->key + key_len) = '\0';
-
- if (text_ptr[i].compression > 0)
- {
- textp->lang = textp->key + key_len + 1;
- memcpy(textp->lang, text_ptr[i].lang, lang_len);
- *(textp->lang + lang_len) = '\0';
- textp->lang_key = textp->lang + lang_len + 1;
- memcpy(textp->lang_key, text_ptr[i].lang_key, lang_key_len);
- *(textp->lang_key + lang_key_len) = '\0';
- textp->text = textp->lang_key + lang_key_len + 1;
- }
-
- else
- {
- textp->lang=NULL;
- textp->lang_key=NULL;
- textp->text = textp->key + key_len + 1;
- }
-
- if (text_length)
- memcpy(textp->text, text_ptr[i].text, text_length);
-
- *(textp->text + text_length) = '\0';
-
-# ifdef PNG_iTXt_SUPPORTED
- if (textp->compression > 0)
- {
- textp->text_length = 0;
- textp->itxt_length = text_length;
- }
-
- else
-# endif
- {
- textp->text_length = text_length;
- textp->itxt_length = 0;
- }
-
- info_ptr->num_text++;
- png_debug1(3, "transferred text chunk %d", info_ptr->num_text);
- }
-
- return(0);
-}
-#endif
-
-#ifdef PNG_tIME_SUPPORTED
-void PNGAPI
-png_set_tIME(png_const_structrp png_ptr, png_inforp info_ptr,
- png_const_timep mod_time)
-{
- png_debug1(1, "in %s storage function", "tIME");
-
- if (png_ptr == NULL || info_ptr == NULL || mod_time == NULL ||
- (png_ptr->mode & PNG_WROTE_tIME))
- return;
-
- if (mod_time->month == 0 || mod_time->month > 12 ||
- mod_time->day == 0 || mod_time->day > 31 ||
- mod_time->hour > 23 || mod_time->minute > 59 ||
- mod_time->second > 60)
- {
- png_warning(png_ptr, "Ignoring invalid time value");
- return;
- }
-
- info_ptr->mod_time = *mod_time;
- info_ptr->valid |= PNG_INFO_tIME;
-}
-#endif
-
-#ifdef PNG_tRNS_SUPPORTED
-void PNGAPI
-png_set_tRNS(png_structrp png_ptr, png_inforp info_ptr,
- png_const_bytep trans_alpha, int num_trans, png_const_color_16p trans_color)
-{
- png_debug1(1, "in %s storage function", "tRNS");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (trans_alpha != NULL)
- {
- /* It may not actually be necessary to set png_ptr->trans_alpha here;
- * we do it for backward compatibility with the way the png_handle_tRNS
- * function used to do the allocation.
- *
- * 1.6.0: The above statement is incorrect; png_handle_tRNS effectively
- * relies on png_set_tRNS storing the information in png_struct
- * (otherwise it won't be there for the code in pngrtran.c).
- */
-
- png_free_data(png_ptr, info_ptr, PNG_FREE_TRNS, 0);
-
- /* Changed from num_trans to PNG_MAX_PALETTE_LENGTH in version 1.2.1 */
- png_ptr->trans_alpha = info_ptr->trans_alpha = png_voidcast(png_bytep,
- png_malloc(png_ptr, PNG_MAX_PALETTE_LENGTH));
-
- if (num_trans > 0 && num_trans <= PNG_MAX_PALETTE_LENGTH)
- memcpy(info_ptr->trans_alpha, trans_alpha, (png_size_t)num_trans);
- }
-
- if (trans_color != NULL)
- {
- int sample_max = (1 << info_ptr->bit_depth);
-
- if ((info_ptr->color_type == PNG_COLOR_TYPE_GRAY &&
- trans_color->gray > sample_max) ||
- (info_ptr->color_type == PNG_COLOR_TYPE_RGB &&
- (trans_color->red > sample_max ||
- trans_color->green > sample_max ||
- trans_color->blue > sample_max)))
- png_warning(png_ptr,
- "tRNS chunk has out-of-range samples for bit_depth");
-
- info_ptr->trans_color = *trans_color;
-
- if (num_trans == 0)
- num_trans = 1;
- }
-
- info_ptr->num_trans = (png_uint_16)num_trans;
-
- if (num_trans != 0)
- {
- info_ptr->valid |= PNG_INFO_tRNS;
- info_ptr->free_me |= PNG_FREE_TRNS;
- }
-}
-#endif
-
-#ifdef PNG_sPLT_SUPPORTED
-void PNGAPI
-png_set_sPLT(png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_sPLT_tp entries, int nentries)
-/*
- * entries - array of png_sPLT_t structures
- * to be added to the list of palettes
- * in the info structure.
- *
- * nentries - number of palette structures to be
- * added.
- */
-{
- png_sPLT_tp np;
-
- if (png_ptr == NULL || info_ptr == NULL || nentries <= 0 || entries == NULL)
- return;
-
- /* Use the internal realloc function, which checks for all the possible
- * overflows. Notice that the parameters are (int) and (size_t)
- */
- np = png_voidcast(png_sPLT_tp,png_realloc_array(png_ptr,
- info_ptr->splt_palettes, info_ptr->splt_palettes_num, nentries,
- sizeof *np));
-
- if (np == NULL)
- {
- /* Out of memory or too many chunks */
- png_chunk_report(png_ptr, "too many sPLT chunks", PNG_CHUNK_WRITE_ERROR);
- return;
- }
-
- png_free(png_ptr, info_ptr->splt_palettes);
- info_ptr->splt_palettes = np;
- info_ptr->free_me |= PNG_FREE_SPLT;
-
- np += info_ptr->splt_palettes_num;
-
- do
- {
- png_size_t length;
-
- /* Skip invalid input entries */
- if (entries->name == NULL || entries->entries == NULL)
- {
- /* png_handle_sPLT doesn't do this, so this is an app error */
- png_app_error(png_ptr, "png_set_sPLT: invalid sPLT");
- /* Just skip the invalid entry */
- continue;
- }
-
- np->depth = entries->depth;
-
- /* In the even of out-of-memory just return - there's no point keeping on
- * trying to add sPLT chunks.
- */
- length = strlen(entries->name) + 1;
- np->name = png_voidcast(png_charp, png_malloc_base(png_ptr, length));
-
- if (np->name == NULL)
- break;
-
- memcpy(np->name, entries->name, length);
-
- /* IMPORTANT: we have memory now that won't get freed if something else
- * goes wrong, this code must free it. png_malloc_array produces no
- * warnings, use a png_chunk_report (below) if there is an error.
- */
- np->entries = png_voidcast(png_sPLT_entryp, png_malloc_array(png_ptr,
- entries->nentries, sizeof (png_sPLT_entry)));
-
- if (np->entries == NULL)
- {
- png_free(png_ptr, np->name);
- break;
- }
-
- np->nentries = entries->nentries;
- /* This multiply can't overflow because png_malloc_array has already
- * checked it when doing the allocation.
- */
- memcpy(np->entries, entries->entries,
- entries->nentries * sizeof (png_sPLT_entry));
-
- /* Note that 'continue' skips the advance of the out pointer and out
- * count, so an invalid entry is not added.
- */
- info_ptr->valid |= PNG_INFO_sPLT;
- ++(info_ptr->splt_palettes_num);
- ++np;
- }
- while (++entries, --nentries);
-
- if (nentries > 0)
- png_chunk_report(png_ptr, "sPLT out of memory", PNG_CHUNK_WRITE_ERROR);
-}
-#endif /* PNG_sPLT_SUPPORTED */
-
-#ifdef PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-static png_byte
-check_location(png_const_structrp png_ptr, int location)
-{
- location &= (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT);
-
- /* New in 1.6.0; copy the location and check it. This is an API
- * change, previously the app had to use the
- * png_set_unknown_chunk_location API below for each chunk.
- */
- if (location == 0 && !(png_ptr->mode & PNG_IS_READ_STRUCT))
- {
- /* Write struct, so unknown chunks come from the app */
- png_app_warning(png_ptr,
- "png_set_unknown_chunks now expects a valid location");
- /* Use the old behavior */
- location = (png_byte)(png_ptr->mode &
- (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT));
- }
-
- /* This need not be an internal error - if the app calls
- * png_set_unknown_chunks on a read pointer it must get the location right.
- */
- if (location == 0)
- png_error(png_ptr, "invalid location in png_set_unknown_chunks");
-
- /* Now reduce the location to the top-most set bit by removing each least
- * significant bit in turn.
- */
- while (location != (location & -location))
- location &= ~(location & -location);
-
- /* The cast is safe because 'location' is a bit mask and only the low four
- * bits are significant.
- */
- return (png_byte)location;
-}
-
-void PNGAPI
-png_set_unknown_chunks(png_const_structrp png_ptr,
- png_inforp info_ptr, png_const_unknown_chunkp unknowns, int num_unknowns)
-{
- png_unknown_chunkp np;
-
- if (png_ptr == NULL || info_ptr == NULL || num_unknowns <= 0 ||
- unknowns == NULL)
- return;
-
- /* Check for the failure cases where support has been disabled at compile
- * time. This code is hardly ever compiled - it's here because
- * STORE_UNKNOWN_CHUNKS is set by both read and write code (compiling in this
- * code) but may be meaningless if the read or write handling of unknown
- * chunks is not compiled in.
- */
-# if !defined(PNG_READ_UNKNOWN_CHUNKS_SUPPORTED) && \
- defined(PNG_READ_SUPPORTED)
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
- {
- png_app_error(png_ptr, "no unknown chunk support on read");
- return;
- }
-# endif
-# if !defined(PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED) && \
- defined(PNG_WRITE_SUPPORTED)
- if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
- {
- png_app_error(png_ptr, "no unknown chunk support on write");
- return;
- }
-# endif
-
- /* Prior to 1.6.0 this code used png_malloc_warn; however, this meant that
- * unknown critical chunks could be lost with just a warning resulting in
- * undefined behavior. Now png_chunk_report is used to provide behavior
- * appropriate to read or write.
- */
- np = png_voidcast(png_unknown_chunkp, png_realloc_array(png_ptr,
- info_ptr->unknown_chunks, info_ptr->unknown_chunks_num, num_unknowns,
- sizeof *np));
-
- if (np == NULL)
- {
- png_chunk_report(png_ptr, "too many unknown chunks",
- PNG_CHUNK_WRITE_ERROR);
- return;
- }
-
- png_free(png_ptr, info_ptr->unknown_chunks);
- info_ptr->unknown_chunks = np; /* safe because it is initialized */
- info_ptr->free_me |= PNG_FREE_UNKN;
-
- np += info_ptr->unknown_chunks_num;
-
- /* Increment unknown_chunks_num each time round the loop to protect the
- * just-allocated chunk data.
- */
- for (; num_unknowns > 0; --num_unknowns, ++unknowns)
- {
- memcpy(np->name, unknowns->name, (sizeof np->name));
- np->name[(sizeof np->name)-1] = '\0';
- np->location = check_location(png_ptr, unknowns->location);
-
- if (unknowns->size == 0)
- {
- np->data = NULL;
- np->size = 0;
- }
-
- else
- {
- np->data = png_voidcast(png_bytep,
- png_malloc_base(png_ptr, unknowns->size));
-
- if (np->data == NULL)
- {
- png_chunk_report(png_ptr, "unknown chunk: out of memory",
- PNG_CHUNK_WRITE_ERROR);
- /* But just skip storing the unknown chunk */
- continue;
- }
-
- memcpy(np->data, unknowns->data, unknowns->size);
- np->size = unknowns->size;
- }
-
- /* These increments are skipped on out-of-memory for the data - the
- * unknown chunk entry gets overwritten if the png_chunk_report returns.
- * This is correct in the read case (the chunk is just dropped.)
- */
- ++np;
- ++(info_ptr->unknown_chunks_num);
- }
-}
-
-void PNGAPI
-png_set_unknown_chunk_location(png_const_structrp png_ptr, png_inforp info_ptr,
- int chunk, int location)
-{
- /* This API is pretty pointless in 1.6.0 because the location can be set
- * before the call to png_set_unknown_chunks.
- *
- * TODO: add a png_app_warning in 1.7
- */
- if (png_ptr != NULL && info_ptr != NULL && chunk >= 0 &&
- chunk < info_ptr->unknown_chunks_num)
- {
- if ((location & (PNG_HAVE_IHDR|PNG_HAVE_PLTE|PNG_AFTER_IDAT)) == 0)
- {
- png_app_error(png_ptr, "invalid unknown chunk location");
- /* Fake out the pre 1.6.0 behavior: */
- if ((location & PNG_HAVE_IDAT)) /* undocumented! */
- location = PNG_AFTER_IDAT;
-
- else
- location = PNG_HAVE_IHDR; /* also undocumented */
- }
-
- info_ptr->unknown_chunks[chunk].location =
- check_location(png_ptr, location);
- }
-}
-#endif
-
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-png_uint_32 PNGAPI
-png_permit_mng_features (png_structrp png_ptr, png_uint_32 mng_features)
-{
- png_debug(1, "in png_permit_mng_features");
-
- if (png_ptr == NULL)
- return 0;
-
- png_ptr->mng_features_permitted = mng_features & PNG_ALL_MNG_FEATURES;
-
- return png_ptr->mng_features_permitted;
-}
-#endif
-
-#ifdef PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-static unsigned int
-add_one_chunk(png_bytep list, unsigned int count, png_const_bytep add, int keep)
-{
- unsigned int i;
-
- /* Utility function: update the 'keep' state of a chunk if it is already in
- * the list, otherwise add it to the list.
- */
- for (i=0; i<count; ++i, list += 5) if (memcmp(list, add, 4) == 0)
- {
- list[4] = (png_byte)keep;
- return count;
- }
-
- if (keep != PNG_HANDLE_CHUNK_AS_DEFAULT)
- {
- ++count;
- memcpy(list, add, 4);
- list[4] = (png_byte)keep;
- }
-
- return count;
-}
-
-void PNGAPI
-png_set_keep_unknown_chunks(png_structrp png_ptr, int keep,
- png_const_bytep chunk_list, int num_chunks_in)
-{
- png_bytep new_list;
- unsigned int num_chunks, old_num_chunks;
-
- if (png_ptr == NULL)
- return;
-
- if (keep < 0 || keep >= PNG_HANDLE_CHUNK_LAST)
- {
- png_app_error(png_ptr, "png_set_keep_unknown_chunks: invalid keep");
- return;
- }
-
- if (num_chunks_in <= 0)
- {
- png_ptr->unknown_default = keep;
-
- /* '0' means just set the flags, so stop here */
- if (num_chunks_in == 0)
- return;
- }
-
- if (num_chunks_in < 0)
- {
- /* Ignore all unknown chunks and all chunks recognized by
- * libpng except for IHDR, PLTE, tRNS, IDAT, and IEND
- */
- static PNG_CONST png_byte chunks_to_ignore[] = {
- 98, 75, 71, 68, '\0', /* bKGD */
- 99, 72, 82, 77, '\0', /* cHRM */
- 103, 65, 77, 65, '\0', /* gAMA */
- 104, 73, 83, 84, '\0', /* hIST */
- 105, 67, 67, 80, '\0', /* iCCP */
- 105, 84, 88, 116, '\0', /* iTXt */
- 111, 70, 70, 115, '\0', /* oFFs */
- 112, 67, 65, 76, '\0', /* pCAL */
- 112, 72, 89, 115, '\0', /* pHYs */
- 115, 66, 73, 84, '\0', /* sBIT */
- 115, 67, 65, 76, '\0', /* sCAL */
- 115, 80, 76, 84, '\0', /* sPLT */
- 115, 84, 69, 82, '\0', /* sTER */
- 115, 82, 71, 66, '\0', /* sRGB */
- 116, 69, 88, 116, '\0', /* tEXt */
- 116, 73, 77, 69, '\0', /* tIME */
- 122, 84, 88, 116, '\0' /* zTXt */
- };
-
- chunk_list = chunks_to_ignore;
- num_chunks = (sizeof chunks_to_ignore)/5;
- }
-
- else /* num_chunks_in > 0 */
- {
- if (chunk_list == NULL)
- {
- /* Prior to 1.6.0 this was silently ignored, now it is an app_error
- * which can be switched off.
- */
- png_app_error(png_ptr, "png_set_keep_unknown_chunks: no chunk list");
- return;
- }
-
- num_chunks = num_chunks_in;
- }
-
- old_num_chunks = png_ptr->num_chunk_list;
- if (png_ptr->chunk_list == NULL)
- old_num_chunks = 0;
-
- /* Since num_chunks is always restricted to UINT_MAX/5 this can't overflow.
- */
- if (num_chunks + old_num_chunks > UINT_MAX/5)
- {
- png_app_error(png_ptr, "png_set_keep_unknown_chunks: too many chunks");
- return;
- }
-
- /* If these chunks are being reset to the default then no more memory is
- * required because add_one_chunk above doesn't extend the list if the 'keep'
- * parameter is the default.
- */
- if (keep)
- {
- new_list = png_voidcast(png_bytep, png_malloc(png_ptr,
- 5 * (num_chunks + old_num_chunks)));
-
- if (old_num_chunks > 0)
- memcpy(new_list, png_ptr->chunk_list, 5*old_num_chunks);
- }
-
- else if (old_num_chunks > 0)
- new_list = png_ptr->chunk_list;
-
- else
- new_list = NULL;
-
- /* Add the new chunks together with each one's handling code. If the chunk
- * already exists the code is updated, otherwise the chunk is added to the
- * end. (In libpng 1.6.0 order no longer matters because this code enforces
- * the earlier convention that the last setting is the one that is used.)
- */
- if (new_list != NULL)
- {
- png_const_bytep inlist;
- png_bytep outlist;
- unsigned int i;
-
- for (i=0; i<num_chunks; ++i)
- old_num_chunks = add_one_chunk(new_list, old_num_chunks,
- chunk_list+5*i, keep);
-
- /* Now remove any spurious 'default' entries. */
- num_chunks = 0;
- for (i=0, inlist=outlist=new_list; i<old_num_chunks; ++i, inlist += 5)
- if (inlist[4])
- {
- if (outlist != inlist)
- memcpy(outlist, inlist, 5);
- outlist += 5;
- ++num_chunks;
- }
-
- /* This means the application has removed all the specialized handling. */
- if (num_chunks == 0)
- {
- if (png_ptr->chunk_list != new_list)
- png_free(png_ptr, new_list);
-
- new_list = NULL;
- }
- }
-
- else
- num_chunks = 0;
-
- png_ptr->num_chunk_list = num_chunks;
-
- if (png_ptr->chunk_list != new_list)
- {
- if (png_ptr->chunk_list != NULL)
- png_free(png_ptr, png_ptr->chunk_list);
-
- png_ptr->chunk_list = new_list;
- }
-}
-#endif
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
-void PNGAPI
-png_set_read_user_chunk_fn(png_structrp png_ptr, png_voidp user_chunk_ptr,
- png_user_chunk_ptr read_user_chunk_fn)
-{
- png_debug(1, "in png_set_read_user_chunk_fn");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->read_user_chunk_fn = read_user_chunk_fn;
- png_ptr->user_chunk_ptr = user_chunk_ptr;
-}
-#endif
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-void PNGAPI
-png_set_rows(png_const_structrp png_ptr, png_inforp info_ptr,
- png_bytepp row_pointers)
-{
- png_debug1(1, "in %s storage function", "rows");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (info_ptr->row_pointers && (info_ptr->row_pointers != row_pointers))
- png_free_data(png_ptr, info_ptr, PNG_FREE_ROWS, 0);
-
- info_ptr->row_pointers = row_pointers;
-
- if (row_pointers)
- info_ptr->valid |= PNG_INFO_IDAT;
-}
-#endif
-
-void PNGAPI
-png_set_compression_buffer_size(png_structrp png_ptr, png_size_t size)
-{
- if (png_ptr == NULL)
- return;
-
- if (size == 0 || size > PNG_UINT_31_MAX)
- png_error(png_ptr, "invalid compression buffer size");
-
-# ifdef PNG_SEQUENTIAL_READ_SUPPORTED
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
- {
- png_ptr->IDAT_read_size = (png_uint_32)size; /* checked above */
- return;
- }
-# endif
-
-# ifdef PNG_WRITE_SUPPORTED
- if (!(png_ptr->mode & PNG_IS_READ_STRUCT))
- {
- if (png_ptr->zowner != 0)
- {
- png_warning(png_ptr,
- "Compression buffer size cannot be changed because it is in use");
- return;
- }
-
- if (size > ZLIB_IO_MAX)
- {
- png_warning(png_ptr,
- "Compression buffer size limited to system maximum");
- size = ZLIB_IO_MAX; /* must fit */
- }
-
- else if (size < 6)
- {
- /* Deflate will potentially go into an infinite loop on a SYNC_FLUSH
- * if this is permitted.
- */
- png_warning(png_ptr,
- "Compression buffer size cannot be reduced below 6");
- return;
- }
-
- if (png_ptr->zbuffer_size != size)
- {
- png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
- png_ptr->zbuffer_size = (uInt)size;
- }
- }
-# endif
-}
-
-void PNGAPI
-png_set_invalid(png_const_structrp png_ptr, png_inforp info_ptr, int mask)
-{
- if (png_ptr && info_ptr)
- info_ptr->valid &= ~mask;
-}
-
-
-#ifdef PNG_SET_USER_LIMITS_SUPPORTED
-/* This function was added to libpng 1.2.6 */
-void PNGAPI
-png_set_user_limits (png_structrp png_ptr, png_uint_32 user_width_max,
- png_uint_32 user_height_max)
-{
- /* Images with dimensions larger than these limits will be
- * rejected by png_set_IHDR(). To accept any PNG datastream
- * regardless of dimensions, set both limits to 0x7ffffffL.
- */
- if (png_ptr == NULL)
- return;
-
- png_ptr->user_width_max = user_width_max;
- png_ptr->user_height_max = user_height_max;
-}
-
-/* This function was added to libpng 1.4.0 */
-void PNGAPI
-png_set_chunk_cache_max (png_structrp png_ptr, png_uint_32 user_chunk_cache_max)
-{
- if (png_ptr)
- png_ptr->user_chunk_cache_max = user_chunk_cache_max;
-}
-
-/* This function was added to libpng 1.4.1 */
-void PNGAPI
-png_set_chunk_malloc_max (png_structrp png_ptr,
- png_alloc_size_t user_chunk_malloc_max)
-{
- if (png_ptr)
- png_ptr->user_chunk_malloc_max = user_chunk_malloc_max;
-}
-#endif /* ?PNG_SET_USER_LIMITS_SUPPORTED */
-
-
-#ifdef PNG_BENIGN_ERRORS_SUPPORTED
-void PNGAPI
-png_set_benign_errors(png_structrp png_ptr, int allowed)
-{
- png_debug(1, "in png_set_benign_errors");
-
- /* If allowed is 1, png_benign_error() is treated as a warning.
- *
- * If allowed is 0, png_benign_error() is treated as an error (which
- * is the default behavior if png_set_benign_errors() is not called).
- */
-
- if (allowed)
- png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN |
- PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN;
-
- else
- png_ptr->flags &= ~(PNG_FLAG_BENIGN_ERRORS_WARN |
- PNG_FLAG_APP_WARNINGS_WARN | PNG_FLAG_APP_ERRORS_WARN);
-}
-#endif /* PNG_BENIGN_ERRORS_SUPPORTED */
-
-#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
- /* Whether to report invalid palette index; added at libng-1.5.10.
- * It is possible for an indexed (color-type==3) PNG file to contain
- * pixels with invalid (out-of-range) indexes if the PLTE chunk has
- * fewer entries than the image's bit-depth would allow. We recover
- * from this gracefully by filling any incomplete palette with zeroes
- * (opaque black). By default, when this occurs libpng will issue
- * a benign error. This API can be used to override that behavior.
- */
-void PNGAPI
-png_set_check_for_invalid_index(png_structrp png_ptr, int allowed)
-{
- png_debug(1, "in png_set_check_for_invalid_index");
-
- if (allowed > 0)
- png_ptr->num_palette_max = 0;
-
- else
- png_ptr->num_palette_max = -1;
-}
-#endif
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pngstruct.h - header file for PNG reference library
- *
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * Last changed in libpng 1.6.1 [March 28, 2013]
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* The structure that holds the information to read and write PNG files.
- * The only people who need to care about what is inside of this are the
- * people who will be modifying the library for their own special needs.
- * It should NOT be accessed directly by an application.
- */
-
-#ifndef PNGSTRUCT_H
-#define PNGSTRUCT_H
-/* zlib.h defines the structure z_stream, an instance of which is included
- * in this structure and is required for decompressing the LZ compressed
- * data in PNG files.
- */
-#ifndef ZLIB_CONST
- /* We must ensure that zlib uses 'const' in declarations. */
-# define ZLIB_CONST
-#endif
-#include "zlib.h"
-#ifdef const
- /* zlib.h sometimes #defines const to nothing, undo this. */
-# undef const
-#endif
-
-/* zlib.h has mediocre z_const use before 1.2.6, this stuff is for compatibility
- * with older builds.
- */
-#if ZLIB_VERNUM < 0x1260
-# define PNGZ_MSG_CAST(s) png_constcast(char*,s)
-# define PNGZ_INPUT_CAST(b) png_constcast(png_bytep,b)
-#else
-# define PNGZ_MSG_CAST(s) (s)
-# define PNGZ_INPUT_CAST(b) (b)
-#endif
-
-/* zlib.h declares a magic type 'uInt' that limits the amount of data that zlib
- * can handle at once. This type need be no larger than 16 bits (so maximum of
- * 65535), this define allows us to discover how big it is, but limited by the
- * maximuum for png_size_t. The value can be overriden in a library build
- * (pngusr.h, or set it in CPPFLAGS) and it works to set it to a considerably
- * lower value (e.g. 255 works). A lower value may help memory usage (slightly)
- * and may even improve performance on some systems (and degrade it on others.)
- */
-#ifndef ZLIB_IO_MAX
-# define ZLIB_IO_MAX ((uInt)-1)
-#endif
-
-#ifdef PNG_WRITE_SUPPORTED
-/* The type of a compression buffer list used by the write code. */
-typedef struct png_compression_buffer
-{
- struct png_compression_buffer *next;
- png_byte output[1]; /* actually zbuf_size */
-} png_compression_buffer, *png_compression_bufferp;
-
-#define PNG_COMPRESSION_BUFFER_SIZE(pp)\
- (offsetof(png_compression_buffer, output) + (pp)->zbuffer_size)
-#endif
-
-/* Colorspace support; structures used in png_struct, png_info and in internal
- * functions to hold and communicate information about the color space.
- *
- * PNG_COLORSPACE_SUPPORTED is only required if the application will perform
- * colorspace corrections, otherwise all the colorspace information can be
- * skipped and the size of libpng can be reduced (significantly) by compiling
- * out the colorspace support.
- */
-#ifdef PNG_COLORSPACE_SUPPORTED
-/* The chromaticities of the red, green and blue colorants and the chromaticity
- * of the corresponding white point (i.e. of rgb(1.0,1.0,1.0)).
- */
-typedef struct png_xy
-{
- png_fixed_point redx, redy;
- png_fixed_point greenx, greeny;
- png_fixed_point bluex, bluey;
- png_fixed_point whitex, whitey;
-} png_xy;
-
-/* The same data as above but encoded as CIE XYZ values. When this data comes
- * from chromaticities the sum of the Y values is assumed to be 1.0
- */
-typedef struct png_XYZ
-{
- png_fixed_point red_X, red_Y, red_Z;
- png_fixed_point green_X, green_Y, green_Z;
- png_fixed_point blue_X, blue_Y, blue_Z;
-} png_XYZ;
-#endif /* COLORSPACE */
-
-#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
-/* A colorspace is all the above plus, potentially, profile information,
- * however at present libpng does not use the profile internally so it is only
- * stored in the png_info struct (if iCCP is supported.) The rendering intent
- * is retained here and is checked.
- *
- * The file gamma encoding information is also stored here and gamma correction
- * is done by libpng, whereas color correction must currently be done by the
- * application.
- */
-typedef struct png_colorspace
-{
-#ifdef PNG_GAMMA_SUPPORTED
- png_fixed_point gamma; /* File gamma */
-#endif
-
-#ifdef PNG_COLORSPACE_SUPPORTED
- png_xy end_points_xy; /* End points as chromaticities */
- png_XYZ end_points_XYZ; /* End points as CIE XYZ colorant values */
- png_uint_16 rendering_intent; /* Rendering intent of a profile */
-#endif
-
- /* Flags are always defined to simplify the code. */
- png_uint_16 flags; /* As defined below */
-} png_colorspace, * PNG_RESTRICT png_colorspacerp;
-
-typedef const png_colorspace * PNG_RESTRICT png_const_colorspacerp;
-
-/* General flags for the 'flags' field */
-#define PNG_COLORSPACE_HAVE_GAMMA 0x0001
-#define PNG_COLORSPACE_HAVE_ENDPOINTS 0x0002
-#define PNG_COLORSPACE_HAVE_INTENT 0x0004
-#define PNG_COLORSPACE_FROM_gAMA 0x0008
-#define PNG_COLORSPACE_FROM_cHRM 0x0010
-#define PNG_COLORSPACE_FROM_sRGB 0x0020
-#define PNG_COLORSPACE_ENDPOINTS_MATCH_sRGB 0x0040
-#define PNG_COLORSPACE_MATCHES_sRGB 0x0080 /* exact match on profile */
-#define PNG_COLORSPACE_INVALID 0x8000
-#define PNG_COLORSPACE_CANCEL(flags) (0xffff ^ (flags))
-#endif /* COLORSPACE || GAMMA */
-
-struct png_struct_def
-{
-#ifdef PNG_SETJMP_SUPPORTED
- jmp_buf jmp_buf_local; /* New name in 1.6.0 for jmp_buf in png_struct */
- png_longjmp_ptr longjmp_fn;/* setjmp non-local goto function. */
- jmp_buf *jmp_buf_ptr; /* passed to longjmp_fn */
- size_t jmp_buf_size; /* size of the above, if allocated */
-#endif
- png_error_ptr error_fn; /* function for printing errors and aborting */
-#ifdef PNG_WARNINGS_SUPPORTED
- png_error_ptr warning_fn; /* function for printing warnings */
-#endif
- png_voidp error_ptr; /* user supplied struct for error functions */
- png_rw_ptr write_data_fn; /* function for writing output data */
- png_rw_ptr read_data_fn; /* function for reading input data */
- png_voidp io_ptr; /* ptr to application struct for I/O functions */
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- png_user_transform_ptr read_user_transform_fn; /* user read transform */
-#endif
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
- png_user_transform_ptr write_user_transform_fn; /* user write transform */
-#endif
-
-/* These were added in libpng-1.0.2 */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
- png_voidp user_transform_ptr; /* user supplied struct for user transform */
- png_byte user_transform_depth; /* bit depth of user transformed pixels */
- png_byte user_transform_channels; /* channels in user transformed pixels */
-#endif
-#endif
-
- png_uint_32 mode; /* tells us where we are in the PNG file */
- png_uint_32 flags; /* flags indicating various things to libpng */
- png_uint_32 transformations; /* which transformations to perform */
-
- png_uint_32 zowner; /* ID (chunk type) of zstream owner, 0 if none */
- z_stream zstream; /* decompression structure */
-
-#ifdef PNG_WRITE_SUPPORTED
- png_compression_bufferp zbuffer_list; /* Created on demand during write */
- uInt zbuffer_size; /* size of the actual buffer */
-
- int zlib_level; /* holds zlib compression level */
- int zlib_method; /* holds zlib compression method */
- int zlib_window_bits; /* holds zlib compression window bits */
- int zlib_mem_level; /* holds zlib compression memory level */
- int zlib_strategy; /* holds zlib compression strategy */
-#endif
-/* Added at libpng 1.5.4 */
-#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
- int zlib_text_level; /* holds zlib compression level */
- int zlib_text_method; /* holds zlib compression method */
- int zlib_text_window_bits; /* holds zlib compression window bits */
- int zlib_text_mem_level; /* holds zlib compression memory level */
- int zlib_text_strategy; /* holds zlib compression strategy */
-#endif
-/* End of material added at libpng 1.5.4 */
-/* Added at libpng 1.6.0 */
-#ifdef PNG_WRITE_SUPPORTED
- int zlib_set_level; /* Actual values set into the zstream on write */
- int zlib_set_method;
- int zlib_set_window_bits;
- int zlib_set_mem_level;
- int zlib_set_strategy;
-#endif
-
- png_uint_32 width; /* width of image in pixels */
- png_uint_32 height; /* height of image in pixels */
- png_uint_32 num_rows; /* number of rows in current pass */
- png_uint_32 usr_width; /* width of row at start of write */
- png_size_t rowbytes; /* size of row in bytes */
- png_uint_32 iwidth; /* width of current interlaced row in pixels */
- png_uint_32 row_number; /* current row in interlace pass */
- png_uint_32 chunk_name; /* PNG_CHUNK() id of current chunk */
- png_bytep prev_row; /* buffer to save previous (unfiltered) row.
- * This is a pointer into big_prev_row
- */
- png_bytep row_buf; /* buffer to save current (unfiltered) row.
- * This is a pointer into big_row_buf
- */
-#ifdef PNG_WRITE_SUPPORTED
- png_bytep sub_row; /* buffer to save "sub" row when filtering */
- png_bytep up_row; /* buffer to save "up" row when filtering */
- png_bytep avg_row; /* buffer to save "avg" row when filtering */
- png_bytep paeth_row; /* buffer to save "Paeth" row when filtering */
-#endif
- png_size_t info_rowbytes; /* Added in 1.5.4: cache of updated row bytes */
-
- png_uint_32 idat_size; /* current IDAT size for read */
- png_uint_32 crc; /* current chunk CRC value */
- png_colorp palette; /* palette from the input file */
- png_uint_16 num_palette; /* number of color entries in palette */
-
-/* Added at libpng-1.5.10 */
-#ifdef PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
- int num_palette_max; /* maximum palette index found in IDAT */
-#endif
-
- png_uint_16 num_trans; /* number of transparency values */
- png_byte compression; /* file compression type (always 0) */
- png_byte filter; /* file filter type (always 0) */
- png_byte interlaced; /* PNG_INTERLACE_NONE, PNG_INTERLACE_ADAM7 */
- png_byte pass; /* current interlace pass (0 - 6) */
- png_byte do_filter; /* row filter flags (see PNG_FILTER_ below ) */
- png_byte color_type; /* color type of file */
- png_byte bit_depth; /* bit depth of file */
- png_byte usr_bit_depth; /* bit depth of users row: write only */
- png_byte pixel_depth; /* number of bits per pixel */
- png_byte channels; /* number of channels in file */
-#ifdef PNG_WRITE_SUPPORTED
- png_byte usr_channels; /* channels at start of write: write only */
-#endif
- png_byte sig_bytes; /* magic bytes read/written from start of file */
- png_byte maximum_pixel_depth;
- /* pixel depth used for the row buffers */
- png_byte transformed_pixel_depth;
- /* pixel depth after read/write transforms */
-#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
- png_uint_16 filler; /* filler bytes for pixel expansion */
-#endif
-
-#if defined(PNG_bKGD_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) ||\
- defined(PNG_READ_ALPHA_MODE_SUPPORTED)
- png_byte background_gamma_type;
- png_fixed_point background_gamma;
- png_color_16 background; /* background color in screen gamma space */
-#ifdef PNG_READ_GAMMA_SUPPORTED
- png_color_16 background_1; /* background normalized to gamma 1.0 */
-#endif
-#endif /* PNG_bKGD_SUPPORTED */
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
- png_flush_ptr output_flush_fn; /* Function for flushing output */
- png_uint_32 flush_dist; /* how many rows apart to flush, 0 - no flush */
- png_uint_32 flush_rows; /* number of rows written since last flush */
-#endif
-
-#ifdef PNG_READ_GAMMA_SUPPORTED
- int gamma_shift; /* number of "insignificant" bits in 16-bit gamma */
- png_fixed_point screen_gamma; /* screen gamma value (display_exponent) */
-
- png_bytep gamma_table; /* gamma table for 8-bit depth files */
- png_uint_16pp gamma_16_table; /* gamma table for 16-bit depth files */
-#if defined(PNG_READ_BACKGROUND_SUPPORTED) || \
- defined(PNG_READ_ALPHA_MODE_SUPPORTED) || \
- defined(PNG_READ_RGB_TO_GRAY_SUPPORTED)
- png_bytep gamma_from_1; /* converts from 1.0 to screen */
- png_bytep gamma_to_1; /* converts from file to 1.0 */
- png_uint_16pp gamma_16_from_1; /* converts from 1.0 to screen */
- png_uint_16pp gamma_16_to_1; /* converts from file to 1.0 */
-#endif /* READ_BACKGROUND || READ_ALPHA_MODE || RGB_TO_GRAY */
-#endif
-
-#if defined(PNG_READ_GAMMA_SUPPORTED) || defined(PNG_sBIT_SUPPORTED)
- png_color_8 sig_bit; /* significant bits in each available channel */
-#endif
-
-#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
- png_color_8 shift; /* shift for significant bit tranformation */
-#endif
-
-#if defined(PNG_tRNS_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED) \
- || defined(PNG_READ_EXPAND_SUPPORTED) || defined(PNG_READ_BACKGROUND_SUPPORTED)
- png_bytep trans_alpha; /* alpha values for paletted files */
- png_color_16 trans_color; /* transparent color for non-paletted files */
-#endif
-
- png_read_status_ptr read_row_fn; /* called after each row is decoded */
- png_write_status_ptr write_row_fn; /* called after each row is encoded */
-#ifdef PNG_PROGRESSIVE_READ_SUPPORTED
- png_progressive_info_ptr info_fn; /* called after header data fully read */
- png_progressive_row_ptr row_fn; /* called after a prog. row is decoded */
- png_progressive_end_ptr end_fn; /* called after image is complete */
- png_bytep save_buffer_ptr; /* current location in save_buffer */
- png_bytep save_buffer; /* buffer for previously read data */
- png_bytep current_buffer_ptr; /* current location in current_buffer */
- png_bytep current_buffer; /* buffer for recently used data */
- png_uint_32 push_length; /* size of current input chunk */
- png_uint_32 skip_length; /* bytes to skip in input data */
- png_size_t save_buffer_size; /* amount of data now in save_buffer */
- png_size_t save_buffer_max; /* total size of save_buffer */
- png_size_t buffer_size; /* total amount of available input data */
- png_size_t current_buffer_size; /* amount of data now in current_buffer */
- int process_mode; /* what push library is currently doing */
- int cur_palette; /* current push library palette index */
-
-#endif /* PNG_PROGRESSIVE_READ_SUPPORTED */
-
-#if defined(__TURBOC__) && !defined(_Windows) && !defined(__FLAT__)
-/* For the Borland special 64K segment handler */
- png_bytepp offset_table_ptr;
- png_bytep offset_table;
- png_uint_16 offset_table_number;
- png_uint_16 offset_table_count;
- png_uint_16 offset_table_count_free;
-#endif
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
- png_bytep palette_lookup; /* lookup table for quantizing */
- png_bytep quantize_index; /* index translation for palette files */
-#endif
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- png_byte heuristic_method; /* heuristic for row filter selection */
- png_byte num_prev_filters; /* number of weights for previous rows */
- png_bytep prev_filters; /* filter type(s) of previous row(s) */
- png_uint_16p filter_weights; /* weight(s) for previous line(s) */
- png_uint_16p inv_filter_weights; /* 1/weight(s) for previous line(s) */
- png_uint_16p filter_costs; /* relative filter calculation cost */
- png_uint_16p inv_filter_costs; /* 1/relative filter calculation cost */
-#endif
-
- /* Options */
-#ifdef PNG_SET_OPTION_SUPPORTED
- png_byte options; /* On/off state (up to 4 options) */
-#endif
-
-#if PNG_LIBPNG_VER < 10700
-/* To do: remove this from libpng-1.7 */
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- char time_buffer[29]; /* String to hold RFC 1123 time text */
-#endif
-#endif
-
-/* New members added in libpng-1.0.6 */
-
- png_uint_32 free_me; /* flags items libpng is responsible for freeing */
-
-#ifdef PNG_USER_CHUNKS_SUPPORTED
- png_voidp user_chunk_ptr;
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- png_user_chunk_ptr read_user_chunk_fn; /* user read chunk handler */
-#endif
-#endif
-
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- int unknown_default; /* As PNG_HANDLE_* */
- unsigned int num_chunk_list; /* Number of entries in the list */
- png_bytep chunk_list; /* List of png_byte[5]; the textual chunk name
- * followed by a PNG_HANDLE_* byte */
-#endif
-
-/* New members added in libpng-1.0.3 */
-#ifdef PNG_READ_RGB_TO_GRAY_SUPPORTED
- png_byte rgb_to_gray_status;
- /* Added in libpng 1.5.5 to record setting of coefficients: */
- png_byte rgb_to_gray_coefficients_set;
- /* These were changed from png_byte in libpng-1.0.6 */
- png_uint_16 rgb_to_gray_red_coeff;
- png_uint_16 rgb_to_gray_green_coeff;
- /* deleted in 1.5.5: rgb_to_gray_blue_coeff; */
-#endif
-
-/* New member added in libpng-1.0.4 (renamed in 1.0.9) */
-#if defined(PNG_MNG_FEATURES_SUPPORTED)
-/* Changed from png_byte to png_uint_32 at version 1.2.0 */
- png_uint_32 mng_features_permitted;
-#endif
-
-/* New member added in libpng-1.0.9, ifdef'ed out in 1.0.12, enabled in 1.2.0 */
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- png_byte filter_type;
-#endif
-
-/* New members added in libpng-1.2.0 */
-
-/* New members added in libpng-1.0.2 but first enabled by default in 1.2.0 */
-#ifdef PNG_USER_MEM_SUPPORTED
- png_voidp mem_ptr; /* user supplied struct for mem functions */
- png_malloc_ptr malloc_fn; /* function for allocating memory */
- png_free_ptr free_fn; /* function for freeing memory */
-#endif
-
-/* New member added in libpng-1.0.13 and 1.2.0 */
- png_bytep big_row_buf; /* buffer to save current (unfiltered) row */
-
-#ifdef PNG_READ_QUANTIZE_SUPPORTED
-/* The following three members were added at version 1.0.14 and 1.2.4 */
- png_bytep quantize_sort; /* working sort array */
- png_bytep index_to_palette; /* where the original index currently is
- in the palette */
- png_bytep palette_to_index; /* which original index points to this
- palette color */
-#endif
-
-/* New members added in libpng-1.0.16 and 1.2.6 */
- png_byte compression_type;
-
-#ifdef PNG_USER_LIMITS_SUPPORTED
- png_uint_32 user_width_max;
- png_uint_32 user_height_max;
-
- /* Added in libpng-1.4.0: Total number of sPLT, text, and unknown
- * chunks that can be stored (0 means unlimited).
- */
- png_uint_32 user_chunk_cache_max;
-
- /* Total memory that a zTXt, sPLT, iTXt, iCCP, or unknown chunk
- * can occupy when decompressed. 0 means unlimited.
- */
- png_alloc_size_t user_chunk_malloc_max;
-#endif
-
-/* New member added in libpng-1.0.25 and 1.2.17 */
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- /* Temporary storage for unknown chunk that the library doesn't recognize,
- * used while reading the chunk.
- */
- png_unknown_chunk unknown_chunk;
-#endif
-
-/* New member added in libpng-1.2.26 */
- png_size_t old_big_row_buf_size;
-
-#ifdef PNG_READ_SUPPORTED
-/* New member added in libpng-1.2.30 */
- png_bytep read_buffer; /* buffer for reading chunk data */
- png_alloc_size_t read_buffer_size; /* current size of the buffer */
-#endif
-#ifdef PNG_SEQUENTIAL_READ_SUPPORTED
- uInt IDAT_read_size; /* limit on read buffer size for IDAT */
-#endif
-
-#ifdef PNG_IO_STATE_SUPPORTED
-/* New member added in libpng-1.4.0 */
- png_uint_32 io_state;
-#endif
-
-/* New member added in libpng-1.5.6 */
- png_bytep big_prev_row;
-
-/* New member added in libpng-1.5.7 */
- void (*read_filter[PNG_FILTER_VALUE_LAST-1])(png_row_infop row_info,
- png_bytep row, png_const_bytep prev_row);
-
-#ifdef PNG_READ_SUPPORTED
-#if defined(PNG_COLORSPACE_SUPPORTED) || defined(PNG_GAMMA_SUPPORTED)
- png_colorspace colorspace;
-#endif
-#endif
-};
-#endif /* PNGSTRUCT_H */
+++ /dev/null
-
-/* pngtest.c - a simple test program to test libpng
- *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This program reads in a PNG image, writes it out again, and then
- * compares the two files. If the files are identical, this shows that
- * the basic chunk handling, filtering, and (de)compression code is working
- * properly. It does not currently test all of the transforms, although
- * it probably should.
- *
- * The program will report "FAIL" in certain legitimate cases:
- * 1) when the compression level or filter selection method is changed.
- * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
- * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
- * exist in the input file.
- * 4) others not listed here...
- * In these cases, it is best to check with another tool such as "pngcheck"
- * to see what the differences between the two files are.
- *
- * If a filename is given on the command-line, then this file is used
- * for the input, rather than the default "pngtest.png". This allows
- * testing a wide variety of files easily. You can also test a number
- * of files at once by typing "pngtest -m file1.png file2.png ..."
- */
-
-#define _POSIX_SOURCE 1
-
-#include <stdio.h>
-#include <stdlib.h>
-#include <string.h>
-
-/* Defined so I can write to a file on gui/windowing platforms */
-/* #define STDERR stderr */
-#define STDERR stdout /* For DOS */
-
-#include "png.h"
-
-/* Known chunks that exist in pngtest.png must be supported or pngtest will fail
- * simply as a result of re-ordering them. This may be fixed in 1.7
- */
-#if defined PNG_READ_SUPPORTED && /* else nothing can be done */\
- defined PNG_READ_bKGD_SUPPORTED &&\
- defined PNG_READ_cHRM_SUPPORTED &&\
- defined PNG_READ_gAMA_SUPPORTED &&\
- defined PNG_READ_oFFs_SUPPORTED &&\
- defined PNG_READ_pCAL_SUPPORTED &&\
- defined PNG_READ_pHYs_SUPPORTED &&\
- defined PNG_READ_sBIT_SUPPORTED &&\
- defined PNG_READ_sCAL_SUPPORTED &&\
- defined PNG_READ_sRGB_SUPPORTED &&\
- defined PNG_READ_tEXt_SUPPORTED &&\
- defined PNG_READ_tIME_SUPPORTED &&\
- defined PNG_READ_zTXt_SUPPORTED
-
-#include "zlib.h"
-/* Copied from pngpriv.h but only used in error messages below. */
-#ifndef PNG_ZBUF_SIZE
-# define PNG_ZBUF_SIZE 8192
-#endif
-#define FCLOSE(file) fclose(file)
-
-#ifndef PNG_STDIO_SUPPORTED
-typedef FILE * png_FILE_p;
-#endif
-
-/* Makes pngtest verbose so we can find problems. */
-#ifndef PNG_DEBUG
-# define PNG_DEBUG 0
-#endif
-
-#if PNG_DEBUG > 1
-# define pngtest_debug(m) ((void)fprintf(stderr, m "\n"))
-# define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1))
-# define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2))
-#else
-# define pngtest_debug(m) ((void)0)
-# define pngtest_debug1(m,p1) ((void)0)
-# define pngtest_debug2(m,p1,p2) ((void)0)
-#endif
-
-#if !PNG_DEBUG
-# define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
-#endif
-
-/* Turn on CPU timing
-#define PNGTEST_TIMING
-*/
-
-#ifndef PNG_FLOATING_POINT_SUPPORTED
-#undef PNGTEST_TIMING
-#endif
-
-#ifdef PNGTEST_TIMING
-static float t_start, t_stop, t_decode, t_encode, t_misc;
-#include <time.h>
-#endif
-
-#ifdef PNG_TIME_RFC1123_SUPPORTED
-#define PNG_tIME_STRING_LENGTH 29
-static int tIME_chunk_present = 0;
-static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
-#endif
-
-static int verbose = 0;
-static int strict = 0;
-static int relaxed = 0;
-static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
-static int error_count = 0; /* count calls to png_error */
-static int warning_count = 0; /* count calls to png_warning */
-
-#ifdef __TURBOC__
-#include <mem.h>
-#endif
-
-/* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
-#ifndef png_jmpbuf
-# define png_jmpbuf(png_ptr) png_ptr->jmpbuf
-#endif
-
-/* Defines for unknown chunk handling if required. */
-#ifndef PNG_HANDLE_CHUNK_ALWAYS
-# define PNG_HANDLE_CHUNK_ALWAYS 3
-#endif
-#ifndef PNG_HANDLE_CHUNK_IF_SAFE
-# define PNG_HANDLE_CHUNK_IF_SAFE 2
-#endif
-
-/* Utility to save typing/errors, the argument must be a name */
-#define MEMZERO(var) ((void)memset(&var, 0, sizeof var))
-
-/* Example of using row callbacks to make a simple progress meter */
-static int status_pass = 1;
-static int status_dots_requested = 0;
-static int status_dots = 1;
-
-static void PNGCBAPI
-read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
-{
- if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
- return;
-
- if (status_pass != pass)
- {
- fprintf(stdout, "\n Pass %d: ", pass);
- status_pass = pass;
- status_dots = 31;
- }
-
- status_dots--;
-
- if (status_dots == 0)
- {
- fprintf(stdout, "\n ");
- status_dots=30;
- }
-
- fprintf(stdout, "r");
-}
-
-#ifdef PNG_WRITE_SUPPORTED
-static void PNGCBAPI
-write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
-{
- if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
- return;
-
- fprintf(stdout, "w");
-}
-#endif
-
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
-/* Example of using user transform callback (we don't transform anything,
- * but merely examine the row filters. We set this to 256 rather than
- * 5 in case illegal filter values are present.)
- */
-static png_uint_32 filters_used[256];
-static void PNGCBAPI
-count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
-{
- if (png_ptr != NULL && row_info != NULL)
- ++filters_used[*(data - 1)];
-}
-#endif
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
-/* Example of using user transform callback (we don't transform anything,
- * but merely count the zero samples)
- */
-
-static png_uint_32 zero_samples;
-
-static void PNGCBAPI
-count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
-{
- png_bytep dp = data;
- if (png_ptr == NULL)
- return;
-
- /* Contents of row_info:
- * png_uint_32 width width of row
- * png_uint_32 rowbytes number of bytes in row
- * png_byte color_type color type of pixels
- * png_byte bit_depth bit depth of samples
- * png_byte channels number of channels (1-4)
- * png_byte pixel_depth bits per pixel (depth*channels)
- */
-
- /* Counts the number of zero samples (or zero pixels if color_type is 3 */
-
- if (row_info->color_type == 0 || row_info->color_type == 3)
- {
- int pos = 0;
- png_uint_32 n, nstop;
-
- for (n = 0, nstop=row_info->width; n<nstop; n++)
- {
- if (row_info->bit_depth == 1)
- {
- if (((*dp << pos++ ) & 0x80) == 0)
- zero_samples++;
-
- if (pos == 8)
- {
- pos = 0;
- dp++;
- }
- }
-
- if (row_info->bit_depth == 2)
- {
- if (((*dp << (pos+=2)) & 0xc0) == 0)
- zero_samples++;
-
- if (pos == 8)
- {
- pos = 0;
- dp++;
- }
- }
-
- if (row_info->bit_depth == 4)
- {
- if (((*dp << (pos+=4)) & 0xf0) == 0)
- zero_samples++;
-
- if (pos == 8)
- {
- pos = 0;
- dp++;
- }
- }
-
- if (row_info->bit_depth == 8)
- if (*dp++ == 0)
- zero_samples++;
-
- if (row_info->bit_depth == 16)
- {
- if ((*dp | *(dp+1)) == 0)
- zero_samples++;
- dp+=2;
- }
- }
- }
- else /* Other color types */
- {
- png_uint_32 n, nstop;
- int channel;
- int color_channels = row_info->channels;
- if (row_info->color_type > 3)color_channels--;
-
- for (n = 0, nstop=row_info->width; n<nstop; n++)
- {
- for (channel = 0; channel < color_channels; channel++)
- {
- if (row_info->bit_depth == 8)
- if (*dp++ == 0)
- zero_samples++;
-
- if (row_info->bit_depth == 16)
- {
- if ((*dp | *(dp+1)) == 0)
- zero_samples++;
-
- dp+=2;
- }
- }
- if (row_info->color_type > 3)
- {
- dp++;
- if (row_info->bit_depth == 16)
- dp++;
- }
- }
- }
-}
-#endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
-
-#ifndef PNG_STDIO_SUPPORTED
-/* START of code to validate stdio-free compilation */
-/* These copies of the default read/write functions come from pngrio.c and
- * pngwio.c. They allow "don't include stdio" testing of the library.
- * This is the function that does the actual reading of data. If you are
- * not reading from a standard C stream, you should create a replacement
- * read_data function and use it at run time with png_set_read_fn(), rather
- * than changing the library.
- */
-
-#ifdef PNG_IO_STATE_SUPPORTED
-void
-pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
- png_uint_32 io_op);
-void
-pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
- png_uint_32 io_op)
-{
- png_uint_32 io_state = png_get_io_state(png_ptr);
- int err = 0;
-
- /* Check if the current operation (reading / writing) is as expected. */
- if ((io_state & PNG_IO_MASK_OP) != io_op)
- png_error(png_ptr, "Incorrect operation in I/O state");
-
- /* Check if the buffer size specific to the current location
- * (file signature / header / data / crc) is as expected.
- */
- switch (io_state & PNG_IO_MASK_LOC)
- {
- case PNG_IO_SIGNATURE:
- if (data_length > 8)
- err = 1;
- break;
- case PNG_IO_CHUNK_HDR:
- if (data_length != 8)
- err = 1;
- break;
- case PNG_IO_CHUNK_DATA:
- break; /* no restrictions here */
- case PNG_IO_CHUNK_CRC:
- if (data_length != 4)
- err = 1;
- break;
- default:
- err = 1; /* uninitialized */
- }
- if (err)
- png_error(png_ptr, "Bad I/O state or buffer size");
-}
-#endif
-
-static void PNGCBAPI
-pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
-{
- png_size_t check = 0;
- png_voidp io_ptr;
-
- /* fread() returns 0 on error, so it is OK to store this in a png_size_t
- * instead of an int, which is what fread() actually returns.
- */
- io_ptr = png_get_io_ptr(png_ptr);
- if (io_ptr != NULL)
- {
- check = fread(data, 1, length, (png_FILE_p)io_ptr);
- }
-
- if (check != length)
- {
- png_error(png_ptr, "Read Error");
- }
-
-#ifdef PNG_IO_STATE_SUPPORTED
- pngtest_check_io_state(png_ptr, length, PNG_IO_READING);
-#endif
-}
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-static void PNGCBAPI
-pngtest_flush(png_structp png_ptr)
-{
- /* Do nothing; fflush() is said to be just a waste of energy. */
- PNG_UNUSED(png_ptr) /* Stifle compiler warning */
-}
-#endif
-
-/* This is the function that does the actual writing of data. If you are
- * not writing to a standard C stream, you should create a replacement
- * write_data function and use it at run time with png_set_write_fn(), rather
- * than changing the library.
- */
-static void PNGCBAPI
-pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
-{
- png_size_t check;
-
- check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
-
- if (check != length)
- {
- png_error(png_ptr, "Write Error");
- }
-
-#ifdef PNG_IO_STATE_SUPPORTED
- pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING);
-#endif
-}
-#endif /* !PNG_STDIO_SUPPORTED */
-
-/* This function is called when there is a warning, but the library thinks
- * it can continue anyway. Replacement functions don't have to do anything
- * here if you don't want to. In the default configuration, png_ptr is
- * not used, but it is passed in case it may be useful.
- */
-typedef struct
-{
- PNG_CONST char *file_name;
-} pngtest_error_parameters;
-
-static void PNGCBAPI
-pngtest_warning(png_structp png_ptr, png_const_charp message)
-{
- PNG_CONST char *name = "UNKNOWN (ERROR!)";
- pngtest_error_parameters *test =
- (pngtest_error_parameters*)png_get_error_ptr(png_ptr);
-
- ++warning_count;
-
- if (test != NULL && test->file_name != NULL)
- name = test->file_name;
-
- fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
-}
-
-/* This is the default error handling function. Note that replacements for
- * this function MUST NOT RETURN, or the program will likely crash. This
- * function is used by default, or if the program supplies NULL for the
- * error function pointer in png_set_error_fn().
- */
-static void PNGCBAPI
-pngtest_error(png_structp png_ptr, png_const_charp message)
-{
- ++error_count;
-
- pngtest_warning(png_ptr, message);
- /* We can return because png_error calls the default handler, which is
- * actually OK in this case.
- */
-}
-
-/* END of code to validate stdio-free compilation */
-
-/* START of code to validate memory allocation and deallocation */
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
-
-/* Allocate memory. For reasonable files, size should never exceed
- * 64K. However, zlib may allocate more then 64K if you don't tell
- * it not to. See zconf.h and png.h for more information. zlib does
- * need to allocate exactly 64K, so whatever you call here must
- * have the ability to do that.
- *
- * This piece of code can be compiled to validate max 64K allocations
- * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
- */
-typedef struct memory_information
-{
- png_alloc_size_t size;
- png_voidp pointer;
- struct memory_information *next;
-} memory_information;
-typedef memory_information *memory_infop;
-
-static memory_infop pinformation = NULL;
-static int current_allocation = 0;
-static int maximum_allocation = 0;
-static int total_allocation = 0;
-static int num_allocations = 0;
-
-png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
- png_alloc_size_t size));
-void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
-
-png_voidp
-PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
-{
-
- /* png_malloc has already tested for NULL; png_create_struct calls
- * png_debug_malloc directly, with png_ptr == NULL which is OK
- */
-
- if (size == 0)
- return (NULL);
-
- /* This calls the library allocator twice, once to get the requested
- buffer and once to get a new free list entry. */
- {
- /* Disable malloc_fn and free_fn */
- memory_infop pinfo;
- png_set_mem_fn(png_ptr, NULL, NULL, NULL);
- pinfo = (memory_infop)png_malloc(png_ptr,
- (sizeof *pinfo));
- pinfo->size = size;
- current_allocation += size;
- total_allocation += size;
- num_allocations ++;
-
- if (current_allocation > maximum_allocation)
- maximum_allocation = current_allocation;
-
- pinfo->pointer = png_malloc(png_ptr, size);
- /* Restore malloc_fn and free_fn */
-
- png_set_mem_fn(png_ptr,
- NULL, png_debug_malloc, png_debug_free);
-
- if (size != 0 && pinfo->pointer == NULL)
- {
- current_allocation -= size;
- total_allocation -= size;
- png_error(png_ptr,
- "out of memory in pngtest->png_debug_malloc");
- }
-
- pinfo->next = pinformation;
- pinformation = pinfo;
- /* Make sure the caller isn't assuming zeroed memory. */
- memset(pinfo->pointer, 0xdd, pinfo->size);
-
- if (verbose)
- printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
- pinfo->pointer);
-
- return (png_voidp)(pinfo->pointer);
- }
-}
-
-/* Free a pointer. It is removed from the list at the same time. */
-void PNGCBAPI
-png_debug_free(png_structp png_ptr, png_voidp ptr)
-{
- if (png_ptr == NULL)
- fprintf(STDERR, "NULL pointer to png_debug_free.\n");
-
- if (ptr == 0)
- {
-#if 0 /* This happens all the time. */
- fprintf(STDERR, "WARNING: freeing NULL pointer\n");
-#endif
- return;
- }
-
- /* Unlink the element from the list. */
- {
- memory_infop *ppinfo = &pinformation;
-
- for (;;)
- {
- memory_infop pinfo = *ppinfo;
-
- if (pinfo->pointer == ptr)
- {
- *ppinfo = pinfo->next;
- current_allocation -= pinfo->size;
- if (current_allocation < 0)
- fprintf(STDERR, "Duplicate free of memory\n");
- /* We must free the list element too, but first kill
- the memory that is to be freed. */
- memset(ptr, 0x55, pinfo->size);
- png_free_default(png_ptr, pinfo);
- pinfo = NULL;
- break;
- }
-
- if (pinfo->next == NULL)
- {
- fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
- break;
- }
-
- ppinfo = &pinfo->next;
- }
- }
-
- /* Finally free the data. */
- if (verbose)
- printf("Freeing %p\n", ptr);
-
- png_free_default(png_ptr, ptr);
- ptr = NULL;
-}
-#endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
-/* END of code to test memory allocation/deallocation */
-
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
-/* Demonstration of user chunk support of the sTER and vpAg chunks */
-
-/* (sTER is a public chunk not yet known by libpng. vpAg is a private
-chunk used in ImageMagick to store "virtual page" size). */
-
-static struct user_chunk_data
-{
- png_const_infop info_ptr;
- png_uint_32 vpAg_width, vpAg_height;
- png_byte vpAg_units;
- png_byte sTER_mode;
- int location[2];
-}
-user_chunk_data;
-
-/* Used for location and order; zero means nothing. */
-#define have_sTER 0x01
-#define have_vpAg 0x02
-#define before_PLTE 0x10
-#define before_IDAT 0x20
-#define after_IDAT 0x40
-
-static void
-init_callback_info(png_const_infop info_ptr)
-{
- MEMZERO(user_chunk_data);
- user_chunk_data.info_ptr = info_ptr;
-}
-
-static int
-set_location(png_structp png_ptr, struct user_chunk_data *data, int what)
-{
- int location;
-
- if ((data->location[0] & what) || (data->location[1] & what))
- return 0; /* already have one of these */
-
- /* Find where we are (the code below zeros info_ptr to indicate that the
- * chunks before the first IDAT have been read.)
- */
- if (data->info_ptr == NULL) /* after IDAT */
- location = what | after_IDAT;
-
- else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE))
- location = what | before_IDAT;
-
- else
- location = what | before_PLTE;
-
- if (data->location[0] == 0)
- data->location[0] = location;
-
- else
- data->location[1] = location;
-
- return 1; /* handled */
-}
-
-static int PNGCBAPI read_user_chunk_callback(png_struct *png_ptr,
- png_unknown_chunkp chunk)
-{
- struct user_chunk_data *my_user_chunk_data =
- (struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr);
-
- if (my_user_chunk_data == NULL)
- png_error(png_ptr, "lost user chunk pointer");
-
- /* Return one of the following:
- * return (-n); chunk had an error
- * return (0); did not recognize
- * return (n); success
- *
- * The unknown chunk structure contains the chunk data:
- * png_byte name[5];
- * png_byte *data;
- * png_size_t size;
- *
- * Note that libpng has already taken care of the CRC handling.
- */
-
- if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
- chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
- {
- /* Found sTER chunk */
- if (chunk->size != 1)
- return (-1); /* Error return */
-
- if (chunk->data[0] != 0 && chunk->data[0] != 1)
- return (-1); /* Invalid mode */
-
- if (set_location(png_ptr, my_user_chunk_data, have_sTER))
- {
- my_user_chunk_data->sTER_mode=chunk->data[0];
- return (1);
- }
-
- else
- return (0); /* duplicate sTER - give it to libpng */
- }
-
- if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
- chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
- return (0); /* Did not recognize */
-
- /* Found ImageMagick vpAg chunk */
-
- if (chunk->size != 9)
- return (-1); /* Error return */
-
- if (!set_location(png_ptr, my_user_chunk_data, have_vpAg))
- return (0); /* duplicate vpAg */
-
- my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data);
- my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4);
- my_user_chunk_data->vpAg_units = chunk->data[8];
-
- return (1);
-}
-
-#ifdef PNG_WRITE_SUPPORTED
-static void
-write_sTER_chunk(png_structp write_ptr)
-{
- png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
-
- if (verbose)
- fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
-
- png_write_chunk(write_ptr, png_sTER, &user_chunk_data.sTER_mode, 1);
-}
-
-static void
-write_vpAg_chunk(png_structp write_ptr)
-{
- png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
-
- png_byte vpag_chunk_data[9];
-
- if (verbose)
- fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
- (unsigned long)user_chunk_data.vpAg_width,
- (unsigned long)user_chunk_data.vpAg_height,
- user_chunk_data.vpAg_units);
-
- png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
- png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
- vpag_chunk_data[8] = user_chunk_data.vpAg_units;
- png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
-}
-
-static void
-write_chunks(png_structp write_ptr, int location)
-{
- int i;
-
- /* Notice that this preserves the original chunk order, however chunks
- * intercepted by the callback will be written *after* chunks passed to
- * libpng. This will actually reverse a pair of sTER chunks or a pair of
- * vpAg chunks, resulting in an error later. This is not worth worrying
- * about - the chunks should not be duplicated!
- */
- for (i=0; i<2; ++i)
- {
- if (user_chunk_data.location[i] == (location | have_sTER))
- write_sTER_chunk(write_ptr);
-
- else if (user_chunk_data.location[i] == (location | have_vpAg))
- write_vpAg_chunk(write_ptr);
- }
-}
-#endif /* PNG_WRITE_SUPPORTED */
-#else /* !PNG_READ_USER_CHUNKS_SUPPORTED */
-# define write_chunks(pp,loc) ((void)0)
-#endif
-/* END of code to demonstrate user chunk support */
-
-/* START of code to check that libpng has the required text support; this only
- * checks for the write support because if read support is missing the chunk
- * will simply not be reported back to pngtest.
- */
-#ifdef PNG_TEXT_SUPPORTED
-static void
-pngtest_check_text_support(png_const_structp png_ptr, png_textp text_ptr,
- int num_text)
-{
- while (num_text > 0)
- {
- switch (text_ptr[--num_text].compression)
- {
- case PNG_TEXT_COMPRESSION_NONE:
- break;
-
- case PNG_TEXT_COMPRESSION_zTXt:
-# ifndef PNG_WRITE_zTXt_SUPPORTED
- ++unsupported_chunks;
-# endif
- break;
-
- case PNG_ITXT_COMPRESSION_NONE:
- case PNG_ITXT_COMPRESSION_zTXt:
-# ifndef PNG_WRITE_iTXt_SUPPORTED
- ++unsupported_chunks;
-# endif
- break;
-
- default:
- /* This is an error */
- png_error(png_ptr, "invalid text chunk compression field");
- break;
- }
- }
-}
-#endif
-/* END of code to check that libpng has the required text support */
-
-/* Test one file */
-static int
-test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
-{
- static png_FILE_p fpin;
- static png_FILE_p fpout; /* "static" prevents setjmp corruption */
- pngtest_error_parameters error_parameters;
- png_structp read_ptr;
- png_infop read_info_ptr, end_info_ptr;
-#ifdef PNG_WRITE_SUPPORTED
- png_structp write_ptr;
- png_infop write_info_ptr;
- png_infop write_end_info_ptr;
-#else
- png_structp write_ptr = NULL;
- png_infop write_info_ptr = NULL;
- png_infop write_end_info_ptr = NULL;
-#endif
- png_bytep row_buf;
- png_uint_32 y;
- png_uint_32 width, height;
- int num_pass, pass;
- int bit_depth, color_type;
-
- row_buf = NULL;
- error_parameters.file_name = inname;
-
- if ((fpin = fopen(inname, "rb")) == NULL)
- {
- fprintf(STDERR, "Could not find input file %s\n", inname);
- return (1);
- }
-
- if ((fpout = fopen(outname, "wb")) == NULL)
- {
- fprintf(STDERR, "Could not open output file %s\n", outname);
- FCLOSE(fpin);
- return (1);
- }
-
- pngtest_debug("Allocating read and write structures");
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- read_ptr =
- png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
- NULL, NULL, NULL, png_debug_malloc, png_debug_free);
-#else
- read_ptr =
- png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
-#endif
- png_set_error_fn(read_ptr, &error_parameters, pngtest_error,
- pngtest_warning);
-
-#ifdef PNG_WRITE_SUPPORTED
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- write_ptr =
- png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
- NULL, NULL, NULL, png_debug_malloc, png_debug_free);
-#else
- write_ptr =
- png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
-#endif
- png_set_error_fn(write_ptr, &error_parameters, pngtest_error,
- pngtest_warning);
-#endif
- pngtest_debug("Allocating read_info, write_info and end_info structures");
- read_info_ptr = png_create_info_struct(read_ptr);
- end_info_ptr = png_create_info_struct(read_ptr);
-#ifdef PNG_WRITE_SUPPORTED
- write_info_ptr = png_create_info_struct(write_ptr);
- write_end_info_ptr = png_create_info_struct(write_ptr);
-#endif
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- init_callback_info(read_info_ptr);
- png_set_read_user_chunk_fn(read_ptr, &user_chunk_data,
- read_user_chunk_callback);
-#endif
-
-#ifdef PNG_SETJMP_SUPPORTED
- pngtest_debug("Setting jmpbuf for read struct");
- if (setjmp(png_jmpbuf(read_ptr)))
- {
- fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
- png_free(read_ptr, row_buf);
- row_buf = NULL;
- png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
-#ifdef PNG_WRITE_SUPPORTED
- png_destroy_info_struct(write_ptr, &write_end_info_ptr);
- png_destroy_write_struct(&write_ptr, &write_info_ptr);
-#endif
- FCLOSE(fpin);
- FCLOSE(fpout);
- return (1);
- }
-
-#ifdef PNG_WRITE_SUPPORTED
- pngtest_debug("Setting jmpbuf for write struct");
-
- if (setjmp(png_jmpbuf(write_ptr)))
- {
- fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
- png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
- png_destroy_info_struct(write_ptr, &write_end_info_ptr);
-#ifdef PNG_WRITE_SUPPORTED
- png_destroy_write_struct(&write_ptr, &write_info_ptr);
-#endif
- FCLOSE(fpin);
- FCLOSE(fpout);
- return (1);
- }
-#endif
-#endif
-
- if (strict)
- {
- /* Treat png_benign_error() as errors on read */
- png_set_benign_errors(read_ptr, 0);
-
-#ifdef PNG_WRITE_SUPPORTED
- /* Treat them as errors on write */
- png_set_benign_errors(write_ptr, 0);
-#endif
-
- /* if strict is not set, then app warnings and errors are treated as
- * warnings in release builds, but not in unstable builds; this can be
- * changed with '--relaxed'.
- */
- }
-
- else if (relaxed)
- {
- /* Allow application (pngtest) errors and warnings to pass */
- png_set_benign_errors(read_ptr, 1);
-
-#ifdef PNG_WRITE_SUPPORTED
- png_set_benign_errors(write_ptr, 1);
-#endif
- }
-
- pngtest_debug("Initializing input and output streams");
-#ifdef PNG_STDIO_SUPPORTED
- png_init_io(read_ptr, fpin);
-# ifdef PNG_WRITE_SUPPORTED
- png_init_io(write_ptr, fpout);
-# endif
-#else
- png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
-# ifdef PNG_WRITE_SUPPORTED
- png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
-# ifdef PNG_WRITE_FLUSH_SUPPORTED
- pngtest_flush);
-# else
- NULL);
-# endif
-# endif
-#endif
-
- if (status_dots_requested == 1)
- {
-#ifdef PNG_WRITE_SUPPORTED
- png_set_write_status_fn(write_ptr, write_row_callback);
-#endif
- png_set_read_status_fn(read_ptr, read_row_callback);
- }
-
- else
- {
-#ifdef PNG_WRITE_SUPPORTED
- png_set_write_status_fn(write_ptr, NULL);
-#endif
- png_set_read_status_fn(read_ptr, NULL);
- }
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- {
- int i;
-
- for (i = 0; i<256; i++)
- filters_used[i] = 0;
-
- png_set_read_user_transform_fn(read_ptr, count_filters);
- }
-#endif
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
- zero_samples = 0;
- png_set_write_user_transform_fn(write_ptr, count_zero_samples);
-#endif
-
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- /* Preserve all the unknown chunks, if possible. If this is disabled then,
- * even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use
- * libpng to *save* the unknown chunks on read (because we can't switch the
- * save option on!)
- *
- * Notice that if SET_UNKNOWN_CHUNKS is *not* supported read will discard all
- * unknown chunks and write will write them all.
- */
-#ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
- png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
- NULL, 0);
-#endif
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
- NULL, 0);
-#endif
-#endif
-
- pngtest_debug("Reading info struct");
- png_read_info(read_ptr, read_info_ptr);
-
-#ifdef PNG_READ_USER_CHUNKS_SUPPORTED
- /* This is a bit of a hack; there is no obvious way in the callback function
- * to determine that the chunks before the first IDAT have been read, so
- * remove the info_ptr (which is only used to determine position relative to
- * PLTE) here to indicate that we are after the IDAT.
- */
- user_chunk_data.info_ptr = NULL;
-#endif
-
- pngtest_debug("Transferring info struct");
- {
- int interlace_type, compression_type, filter_type;
-
- if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
- &color_type, &interlace_type, &compression_type, &filter_type))
- {
- png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- color_type, interlace_type, compression_type, filter_type);
-#else
- color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
-#endif
- }
- }
-#ifdef PNG_FIXED_POINT_SUPPORTED
-#ifdef PNG_cHRM_SUPPORTED
- {
- png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
- blue_y;
-
- if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
- &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
- {
- png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
- red_y, green_x, green_y, blue_x, blue_y);
- }
- }
-#endif
-#ifdef PNG_gAMA_SUPPORTED
- {
- png_fixed_point gamma;
-
- if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
- png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
- }
-#endif
-#else /* Use floating point versions */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-#ifdef PNG_cHRM_SUPPORTED
- {
- double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
- blue_y;
-
- if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
- &red_y, &green_x, &green_y, &blue_x, &blue_y))
- {
- png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
- red_y, green_x, green_y, blue_x, blue_y);
- }
- }
-#endif
-#ifdef PNG_gAMA_SUPPORTED
- {
- double gamma;
-
- if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
- png_set_gAMA(write_ptr, write_info_ptr, gamma);
- }
-#endif
-#endif /* Floating point */
-#endif /* Fixed point */
-#ifdef PNG_iCCP_SUPPORTED
- {
- png_charp name;
- png_bytep profile;
- png_uint_32 proflen;
- int compression_type;
-
- if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
- &profile, &proflen))
- {
- png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
- profile, proflen);
- }
- }
-#endif
-#ifdef PNG_sRGB_SUPPORTED
- {
- int intent;
-
- if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
- png_set_sRGB(write_ptr, write_info_ptr, intent);
- }
-#endif
- {
- png_colorp palette;
- int num_palette;
-
- if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
- png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
- }
-#ifdef PNG_bKGD_SUPPORTED
- {
- png_color_16p background;
-
- if (png_get_bKGD(read_ptr, read_info_ptr, &background))
- {
- png_set_bKGD(write_ptr, write_info_ptr, background);
- }
- }
-#endif
-#ifdef PNG_hIST_SUPPORTED
- {
- png_uint_16p hist;
-
- if (png_get_hIST(read_ptr, read_info_ptr, &hist))
- png_set_hIST(write_ptr, write_info_ptr, hist);
- }
-#endif
-#ifdef PNG_oFFs_SUPPORTED
- {
- png_int_32 offset_x, offset_y;
- int unit_type;
-
- if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
- &unit_type))
- {
- png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
- }
- }
-#endif
-#ifdef PNG_pCAL_SUPPORTED
- {
- png_charp purpose, units;
- png_charpp params;
- png_int_32 X0, X1;
- int type, nparams;
-
- if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
- &nparams, &units, ¶ms))
- {
- png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
- nparams, units, params);
- }
- }
-#endif
-#ifdef PNG_pHYs_SUPPORTED
- {
- png_uint_32 res_x, res_y;
- int unit_type;
-
- if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
- png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
- }
-#endif
-#ifdef PNG_sBIT_SUPPORTED
- {
- png_color_8p sig_bit;
-
- if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
- png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
- }
-#endif
-#ifdef PNG_sCAL_SUPPORTED
-#if defined(PNG_FLOATING_POINT_SUPPORTED) && \
- defined(PNG_FLOATING_ARITHMETIC_SUPPORTED)
- {
- int unit;
- double scal_width, scal_height;
-
- if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
- &scal_height))
- {
- png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
- }
- }
-#else
-#ifdef PNG_FIXED_POINT_SUPPORTED
- {
- int unit;
- png_charp scal_width, scal_height;
-
- if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
- &scal_height))
- {
- png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
- scal_height);
- }
- }
-#endif
-#endif
-#endif
-#ifdef PNG_TEXT_SUPPORTED
- {
- png_textp text_ptr;
- int num_text;
-
- if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
- {
- pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
-
- pngtest_check_text_support(read_ptr, text_ptr, num_text);
-
- if (verbose)
- {
- int i;
-
- printf("\n");
- for (i=0; i<num_text; i++)
- {
- printf(" Text compression[%d]=%d\n",
- i, text_ptr[i].compression);
- }
- }
-
- png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
- }
- }
-#endif
-#ifdef PNG_tIME_SUPPORTED
- {
- png_timep mod_time;
-
- if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
- {
- png_set_tIME(write_ptr, write_info_ptr, mod_time);
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- if (png_convert_to_rfc1123_buffer(tIME_string, mod_time))
- tIME_string[(sizeof tIME_string) - 1] = '\0';
-
- else
- {
- strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string));
- tIME_string[(sizeof tIME_string) - 1] = '\0';
- }
-
- tIME_chunk_present++;
-#endif /* PNG_TIME_RFC1123_SUPPORTED */
- }
- }
-#endif
-#ifdef PNG_tRNS_SUPPORTED
- {
- png_bytep trans_alpha;
- int num_trans;
- png_color_16p trans_color;
-
- if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
- &trans_color))
- {
- int sample_max = (1 << bit_depth);
- /* libpng doesn't reject a tRNS chunk with out-of-range samples */
- if (!((color_type == PNG_COLOR_TYPE_GRAY &&
- (int)trans_color->gray > sample_max) ||
- (color_type == PNG_COLOR_TYPE_RGB &&
- ((int)trans_color->red > sample_max ||
- (int)trans_color->green > sample_max ||
- (int)trans_color->blue > sample_max))))
- png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
- trans_color);
- }
- }
-#endif
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- {
- png_unknown_chunkp unknowns;
- int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
- &unknowns);
-
- if (num_unknowns)
- {
- png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
- num_unknowns);
-#if PNG_LIBPNG_VER < 10600
- /* Copy the locations from the read_info_ptr. The automatically
- * generated locations in write_end_info_ptr are wrong prior to 1.6.0
- * because they are reset from the write pointer (removed in 1.6.0).
- */
- {
- int i;
- for (i = 0; i < num_unknowns; i++)
- png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
- unknowns[i].location);
- }
-#endif
- }
- }
-#endif
-
-#ifdef PNG_WRITE_SUPPORTED
- pngtest_debug("Writing info struct");
-
- /* Write the info in two steps so that if we write the 'unknown' chunks here
- * they go to the correct place.
- */
- png_write_info_before_PLTE(write_ptr, write_info_ptr);
-
- write_chunks(write_ptr, before_PLTE); /* before PLTE */
-
- png_write_info(write_ptr, write_info_ptr);
-
- write_chunks(write_ptr, before_IDAT); /* after PLTE */
-#endif
-
-#ifdef SINGLE_ROWBUF_ALLOC
- pngtest_debug("Allocating row buffer...");
- row_buf = (png_bytep)png_malloc(read_ptr,
- png_get_rowbytes(read_ptr, read_info_ptr));
-
- pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
-#endif /* SINGLE_ROWBUF_ALLOC */
- pngtest_debug("Writing row data");
-
-#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
- defined(PNG_WRITE_INTERLACING_SUPPORTED)
- num_pass = png_set_interlace_handling(read_ptr);
-# ifdef PNG_WRITE_SUPPORTED
- png_set_interlace_handling(write_ptr);
-# endif
-#else
- num_pass = 1;
-#endif
-
-#ifdef PNGTEST_TIMING
- t_stop = (float)clock();
- t_misc += (t_stop - t_start);
- t_start = t_stop;
-#endif
- for (pass = 0; pass < num_pass; pass++)
- {
- pngtest_debug1("Writing row data for pass %d", pass);
- for (y = 0; y < height; y++)
- {
-#ifndef SINGLE_ROWBUF_ALLOC
- pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
- row_buf = (png_bytep)png_malloc(read_ptr,
- png_get_rowbytes(read_ptr, read_info_ptr));
-
- pngtest_debug2("\t0x%08lx (%u bytes)", (unsigned long)row_buf,
- png_get_rowbytes(read_ptr, read_info_ptr));
-
-#endif /* !SINGLE_ROWBUF_ALLOC */
- png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
-
-#ifdef PNG_WRITE_SUPPORTED
-#ifdef PNGTEST_TIMING
- t_stop = (float)clock();
- t_decode += (t_stop - t_start);
- t_start = t_stop;
-#endif
- png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
-#ifdef PNGTEST_TIMING
- t_stop = (float)clock();
- t_encode += (t_stop - t_start);
- t_start = t_stop;
-#endif
-#endif /* PNG_WRITE_SUPPORTED */
-
-#ifndef SINGLE_ROWBUF_ALLOC
- pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
- png_free(read_ptr, row_buf);
- row_buf = NULL;
-#endif /* !SINGLE_ROWBUF_ALLOC */
- }
- }
-
-#ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
- png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
-#endif
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
-#endif
-
- pngtest_debug("Reading and writing end_info data");
-
- png_read_end(read_ptr, end_info_ptr);
-#ifdef PNG_TEXT_SUPPORTED
- {
- png_textp text_ptr;
- int num_text;
-
- if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
- {
- pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
-
- pngtest_check_text_support(read_ptr, text_ptr, num_text);
-
- if (verbose)
- {
- int i;
-
- printf("\n");
- for (i=0; i<num_text; i++)
- {
- printf(" Text compression[%d]=%d\n",
- i, text_ptr[i].compression);
- }
- }
-
- png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
- }
- }
-#endif
-#ifdef PNG_tIME_SUPPORTED
- {
- png_timep mod_time;
-
- if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
- {
- png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- if (png_convert_to_rfc1123_buffer(tIME_string, mod_time))
- tIME_string[(sizeof tIME_string) - 1] = '\0';
-
- else
- {
- strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string);
- tIME_string[(sizeof tIME_string)-1] = '\0';
- }
-
- tIME_chunk_present++;
-#endif /* PNG_TIME_RFC1123_SUPPORTED */
- }
- }
-#endif
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- {
- png_unknown_chunkp unknowns;
- int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
- &unknowns);
-
- if (num_unknowns)
- {
- png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
- num_unknowns);
-#if PNG_LIBPNG_VER < 10600
- /* Copy the locations from the read_info_ptr. The automatically
- * generated locations in write_end_info_ptr are wrong prior to 1.6.0
- * because they are reset from the write pointer (removed in 1.6.0).
- */
- {
- int i;
- for (i = 0; i < num_unknowns; i++)
- png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
- unknowns[i].location);
- }
-#endif
- }
- }
-#endif
-
-#ifdef PNG_WRITE_SUPPORTED
-#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
- /* Normally one would use Z_DEFAULT_STRATEGY for text compression.
- * This is here just to make pngtest replicate the results from libpng
- * versions prior to 1.5.4, and to test this new API.
- */
- png_set_text_compression_strategy(write_ptr, Z_FILTERED);
-#endif
-
- /* When the unknown vpAg/sTER chunks are written by pngtest the only way to
- * do it is to write them *before* calling png_write_end. When unknown
- * chunks are written by libpng, however, they are written just before IEND.
- * There seems to be no way round this, however vpAg/sTER are not expected
- * after IDAT.
- */
- write_chunks(write_ptr, after_IDAT);
-
- png_write_end(write_ptr, write_end_info_ptr);
-#endif
-
-#ifdef PNG_EASY_ACCESS_SUPPORTED
- if (verbose)
- {
- png_uint_32 iwidth, iheight;
- iwidth = png_get_image_width(write_ptr, write_info_ptr);
- iheight = png_get_image_height(write_ptr, write_info_ptr);
- fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
- (unsigned long)iwidth, (unsigned long)iheight);
- }
-#endif
-
- pngtest_debug("Destroying data structs");
-#ifdef SINGLE_ROWBUF_ALLOC
- pngtest_debug("destroying row_buf for read_ptr");
- png_free(read_ptr, row_buf);
- row_buf = NULL;
-#endif /* SINGLE_ROWBUF_ALLOC */
- pngtest_debug("destroying read_ptr, read_info_ptr, end_info_ptr");
- png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
-#ifdef PNG_WRITE_SUPPORTED
- pngtest_debug("destroying write_end_info_ptr");
- png_destroy_info_struct(write_ptr, &write_end_info_ptr);
- pngtest_debug("destroying write_ptr, write_info_ptr");
- png_destroy_write_struct(&write_ptr, &write_info_ptr);
-#endif
- pngtest_debug("Destruction complete.");
-
- FCLOSE(fpin);
- FCLOSE(fpout);
-
- /* Summarize any warnings or errors and in 'strict' mode fail the test.
- * Unsupported chunks can result in warnings, in that case ignore the strict
- * setting, otherwise fail the test on warnings as well as errors.
- */
- if (error_count > 0)
- {
- /* We don't really expect to get here because of the setjmp handling
- * above, but this is safe.
- */
- fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)",
- inname, error_count, warning_count);
-
- if (strict != 0)
- return (1);
- }
-
-# ifdef PNG_WRITE_SUPPORTED
- /* If there we no write support nothing was written! */
- else if (unsupported_chunks > 0)
- {
- fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
- inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
- }
-# endif
-
- else if (warning_count > 0)
- {
- fprintf(STDERR, "\n %s: %d libpng warnings found",
- inname, warning_count);
-
- if (strict != 0)
- return (1);
- }
-
- pngtest_debug("Opening files for comparison");
- if ((fpin = fopen(inname, "rb")) == NULL)
- {
- fprintf(STDERR, "Could not find file %s\n", inname);
- return (1);
- }
-
- if ((fpout = fopen(outname, "rb")) == NULL)
- {
- fprintf(STDERR, "Could not find file %s\n", outname);
- FCLOSE(fpin);
- return (1);
- }
-
-#ifdef PNG_WRITE_SUPPORTED /* else nothing was written */
- {
- int wrote_question = 0;
-
- for (;;)
- {
- png_size_t num_in, num_out;
- char inbuf[256], outbuf[256];
-
-
- num_in = fread(inbuf, 1, sizeof inbuf, fpin);
- num_out = fread(outbuf, 1, sizeof outbuf, fpout);
-
- if (num_in != num_out)
- {
- fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
- inname, outname);
-
- if (wrote_question == 0 && unsupported_chunks == 0)
- {
- fprintf(STDERR,
- " Was %s written with the same maximum IDAT chunk size (%d bytes),",
- inname, PNG_ZBUF_SIZE);
- fprintf(STDERR,
- "\n filtering heuristic (libpng default), compression");
- fprintf(STDERR,
- " level (zlib default),\n and zlib version (%s)?\n\n",
- ZLIB_VERSION);
- wrote_question = 1;
- }
-
- FCLOSE(fpin);
- FCLOSE(fpout);
-
- if (strict != 0 && unsupported_chunks == 0)
- return (1);
-
- else
- return (0);
- }
-
- if (!num_in)
- break;
-
- if (memcmp(inbuf, outbuf, num_in))
- {
- fprintf(STDERR, "\nFiles %s and %s are different\n", inname,
- outname);
-
- if (wrote_question == 0 && unsupported_chunks == 0)
- {
- fprintf(STDERR,
- " Was %s written with the same maximum IDAT chunk size (%d bytes),",
- inname, PNG_ZBUF_SIZE);
- fprintf(STDERR,
- "\n filtering heuristic (libpng default), compression");
- fprintf(STDERR,
- " level (zlib default),\n and zlib version (%s)?\n\n",
- ZLIB_VERSION);
- wrote_question = 1;
- }
-
- FCLOSE(fpin);
- FCLOSE(fpout);
-
- /* NOTE: the unsupported_chunks escape is permitted here because
- * unsupported text chunk compression will result in the compression
- * mode being changed (to NONE) yet, in the test case, the result
- * can be exactly the same size!
- */
- if (strict != 0 && unsupported_chunks == 0)
- return (1);
-
- else
- return (0);
- }
- }
- }
-#endif /* PNG_WRITE_SUPPORTED */
-
- FCLOSE(fpin);
- FCLOSE(fpout);
-
- return (0);
-}
-
-/* Input and output filenames */
-#ifdef RISCOS
-static PNG_CONST char *inname = "pngtest/png";
-static PNG_CONST char *outname = "pngout/png";
-#else
-static PNG_CONST char *inname = "pngtest.png";
-static PNG_CONST char *outname = "pngout.png";
-#endif
-
-int
-main(int argc, char *argv[])
-{
- int multiple = 0;
- int ierror = 0;
-
- fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
- fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
- fprintf(STDERR, "%s", png_get_copyright(NULL));
- /* Show the version of libpng used in building the library */
- fprintf(STDERR, " library (%lu):%s",
- (unsigned long)png_access_version_number(),
- png_get_header_version(NULL));
-
- /* Show the version of libpng used in building the application */
- fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
- PNG_HEADER_VERSION_STRING);
-
- /* Do some consistency checking on the memory allocation settings, I'm
- * not sure this matters, but it is nice to know, the first of these
- * tests should be impossible because of the way the macros are set
- * in pngconf.h
- */
-#if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
- fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
-#endif
- /* I think the following can happen. */
-#if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
- fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
-#endif
-
- if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
- {
- fprintf(STDERR,
- "Warning: versions are different between png.h and png.c\n");
- fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
- fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
- ++ierror;
- }
-
- if (argc > 1)
- {
- if (strcmp(argv[1], "-m") == 0)
- {
- multiple = 1;
- status_dots_requested = 0;
- }
-
- else if (strcmp(argv[1], "-mv") == 0 ||
- strcmp(argv[1], "-vm") == 0 )
- {
- multiple = 1;
- verbose = 1;
- status_dots_requested = 1;
- }
-
- else if (strcmp(argv[1], "-v") == 0)
- {
- verbose = 1;
- status_dots_requested = 1;
- inname = argv[2];
- }
-
- else if (strcmp(argv[1], "--strict") == 0)
- {
- status_dots_requested = 0;
- verbose = 1;
- inname = argv[2];
- strict++;
- relaxed = 0;
- }
-
- else if (strcmp(argv[1], "--relaxed") == 0)
- {
- status_dots_requested = 0;
- verbose = 1;
- inname = argv[2];
- strict = 0;
- relaxed++;
- }
-
- else
- {
- inname = argv[1];
- status_dots_requested = 0;
- }
- }
-
- if (!multiple && argc == 3 + verbose)
- outname = argv[2 + verbose];
-
- if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
- {
- fprintf(STDERR,
- "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
- argv[0], argv[0]);
- fprintf(STDERR,
- " reads/writes one PNG file (without -m) or multiple files (-m)\n");
- fprintf(STDERR,
- " with -m %s is used as a temporary file\n", outname);
- exit(1);
- }
-
- if (multiple)
- {
- int i;
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- int allocation_now = current_allocation;
-#endif
- for (i=2; i<argc; ++i)
- {
- int kerror;
- fprintf(STDERR, "\n Testing %s:", argv[i]);
- kerror = test_one_file(argv[i], outname);
- if (kerror == 0)
- {
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- int k;
-#endif
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
- fprintf(STDERR, "\n PASS (%lu zero samples)\n",
- (unsigned long)zero_samples);
-#else
- fprintf(STDERR, " PASS\n");
-#endif
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- for (k = 0; k<256; k++)
- if (filters_used[k])
- fprintf(STDERR, " Filter %d was used %lu times\n",
- k, (unsigned long)filters_used[k]);
-#endif
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- if (tIME_chunk_present != 0)
- fprintf(STDERR, " tIME = %s\n", tIME_string);
-
- tIME_chunk_present = 0;
-#endif /* PNG_TIME_RFC1123_SUPPORTED */
- }
-
- else
- {
- fprintf(STDERR, " FAIL\n");
- ierror += kerror;
- }
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- if (allocation_now != current_allocation)
- fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
- current_allocation - allocation_now);
-
- if (current_allocation != 0)
- {
- memory_infop pinfo = pinformation;
-
- fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
- current_allocation);
-
- while (pinfo != NULL)
- {
- fprintf(STDERR, " %lu bytes at %x\n",
- (unsigned long)pinfo->size,
- (unsigned int)pinfo->pointer);
- pinfo = pinfo->next;
- }
- }
-#endif
- }
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- fprintf(STDERR, " Current memory allocation: %10d bytes\n",
- current_allocation);
- fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
- maximum_allocation);
- fprintf(STDERR, " Total memory allocation: %10d bytes\n",
- total_allocation);
- fprintf(STDERR, " Number of allocations: %10d\n",
- num_allocations);
-#endif
- }
-
- else
- {
- int i;
- for (i = 0; i<3; ++i)
- {
- int kerror;
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- int allocation_now = current_allocation;
-#endif
- if (i == 1)
- status_dots_requested = 1;
-
- else if (verbose == 0)
- status_dots_requested = 0;
-
- if (i == 0 || verbose == 1 || ierror != 0)
- fprintf(STDERR, "\n Testing %s:", inname);
-
- kerror = test_one_file(inname, outname);
-
- if (kerror == 0)
- {
- if (verbose == 1 || i == 2)
- {
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- int k;
-#endif
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
- fprintf(STDERR, "\n PASS (%lu zero samples)\n",
- (unsigned long)zero_samples);
-#else
- fprintf(STDERR, " PASS\n");
-#endif
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- for (k = 0; k<256; k++)
- if (filters_used[k])
- fprintf(STDERR, " Filter %d was used %lu times\n",
- k, (unsigned long)filters_used[k]);
-#endif
-#ifdef PNG_TIME_RFC1123_SUPPORTED
- if (tIME_chunk_present != 0)
- fprintf(STDERR, " tIME = %s\n", tIME_string);
-#endif /* PNG_TIME_RFC1123_SUPPORTED */
- }
- }
-
- else
- {
- if (verbose == 0 && i != 2)
- fprintf(STDERR, "\n Testing %s:", inname);
-
- fprintf(STDERR, " FAIL\n");
- ierror += kerror;
- }
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- if (allocation_now != current_allocation)
- fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
- current_allocation - allocation_now);
-
- if (current_allocation != 0)
- {
- memory_infop pinfo = pinformation;
-
- fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
- current_allocation);
-
- while (pinfo != NULL)
- {
- fprintf(STDERR, " %lu bytes at %x\n",
- (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
- pinfo = pinfo->next;
- }
- }
-#endif
- }
-#if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
- fprintf(STDERR, " Current memory allocation: %10d bytes\n",
- current_allocation);
- fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
- maximum_allocation);
- fprintf(STDERR, " Total memory allocation: %10d bytes\n",
- total_allocation);
- fprintf(STDERR, " Number of allocations: %10d\n",
- num_allocations);
-#endif
- }
-
-#ifdef PNGTEST_TIMING
- t_stop = (float)clock();
- t_misc += (t_stop - t_start);
- t_start = t_stop;
- fprintf(STDERR, " CPU time used = %.3f seconds",
- (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
- fprintf(STDERR, " (decoding %.3f,\n",
- t_decode/(float)CLOCKS_PER_SEC);
- fprintf(STDERR, " encoding %.3f ,",
- t_encode/(float)CLOCKS_PER_SEC);
- fprintf(STDERR, " other %.3f seconds)\n\n",
- t_misc/(float)CLOCKS_PER_SEC);
-#endif
-
- if (ierror == 0)
- fprintf(STDERR, " libpng passes test\n");
-
- else
- fprintf(STDERR, " libpng FAILS test\n");
-
- return (int)(ierror != 0);
-}
-#else
-int
-main(void)
-{
- fprintf(STDERR,
- " test ignored because libpng was not built with read support\n");
- /* And skip this test */
- return 77;
-}
-#endif
-
-/* Generate a compiler error if there is an old png.h in the search path. */
-typedef png_libpng_version_1_6_3 Your_png_h_is_not_version_1_6_3;
+++ /dev/null
-
-/* pngtrans.c - transforms the data in a row (used by both readers and writers)
- *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#include "pngpriv.h"
-
-#if defined(PNG_READ_SUPPORTED) || defined(PNG_WRITE_SUPPORTED)
-
-#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Turn on BGR-to-RGB mapping */
-void PNGAPI
-png_set_bgr(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_bgr");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->transformations |= PNG_BGR;
-}
-#endif
-
-#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Turn on 16 bit byte swapping */
-void PNGAPI
-png_set_swap(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_swap");
-
- if (png_ptr == NULL)
- return;
-
- if (png_ptr->bit_depth == 16)
- png_ptr->transformations |= PNG_SWAP_BYTES;
-}
-#endif
-
-#if defined(PNG_READ_PACK_SUPPORTED) || defined(PNG_WRITE_PACK_SUPPORTED)
-/* Turn on pixel packing */
-void PNGAPI
-png_set_packing(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_packing");
-
- if (png_ptr == NULL)
- return;
-
- if (png_ptr->bit_depth < 8)
- {
- png_ptr->transformations |= PNG_PACK;
- png_ptr->usr_bit_depth = 8;
- }
-}
-#endif
-
-#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-/* Turn on packed pixel swapping */
-void PNGAPI
-png_set_packswap(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_packswap");
-
- if (png_ptr == NULL)
- return;
-
- if (png_ptr->bit_depth < 8)
- png_ptr->transformations |= PNG_PACKSWAP;
-}
-#endif
-
-#if defined(PNG_READ_SHIFT_SUPPORTED) || defined(PNG_WRITE_SHIFT_SUPPORTED)
-void PNGAPI
-png_set_shift(png_structrp png_ptr, png_const_color_8p true_bits)
-{
- png_debug(1, "in png_set_shift");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->transformations |= PNG_SHIFT;
- png_ptr->shift = *true_bits;
-}
-#endif
-
-#if defined(PNG_READ_INTERLACING_SUPPORTED) || \
- defined(PNG_WRITE_INTERLACING_SUPPORTED)
-int PNGAPI
-png_set_interlace_handling(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_interlace handling");
-
- if (png_ptr && png_ptr->interlaced)
- {
- png_ptr->transformations |= PNG_INTERLACE;
- return (7);
- }
-
- return (1);
-}
-#endif
-
-#if defined(PNG_READ_FILLER_SUPPORTED) || defined(PNG_WRITE_FILLER_SUPPORTED)
-/* Add a filler byte on read, or remove a filler or alpha byte on write.
- * The filler type has changed in v0.95 to allow future 2-byte fillers
- * for 48-bit input data, as well as to avoid problems with some compilers
- * that don't like bytes as parameters.
- */
-void PNGAPI
-png_set_filler(png_structrp png_ptr, png_uint_32 filler, int filler_loc)
-{
- png_debug(1, "in png_set_filler");
-
- if (png_ptr == NULL)
- return;
-
- /* In libpng 1.6 it is possible to determine whether this is a read or write
- * operation and therefore to do more checking here for a valid call.
- */
- if (png_ptr->mode & PNG_IS_READ_STRUCT)
- {
-# ifdef PNG_READ_FILLER_SUPPORTED
- /* On read png_set_filler is always valid, regardless of the base PNG
- * format, because other transformations can give a format where the
- * filler code can execute (basically an 8 or 16-bit component RGB or G
- * format.)
- *
- * NOTE: usr_channels is not used by the read code! (This has led to
- * confusion in the past.) The filler is only used in the read code.
- */
- png_ptr->filler = (png_uint_16)filler;
-# else
- png_app_error(png_ptr, "png_set_filler not supported on read");
- PNG_UNUSED(filler) /* not used in the write case */
- return;
-# endif
- }
-
- else /* write */
- {
-# ifdef PNG_WRITE_FILLER_SUPPORTED
- /* On write the usr_channels parameter must be set correctly at the
- * start to record the number of channels in the app-supplied data.
- */
- switch (png_ptr->color_type)
- {
- case PNG_COLOR_TYPE_RGB:
- png_ptr->usr_channels = 4;
- break;
-
- case PNG_COLOR_TYPE_GRAY:
- if (png_ptr->bit_depth >= 8)
- {
- png_ptr->usr_channels = 2;
- break;
- }
-
- else
- {
- /* There simply isn't any code in libpng to strip out bits
- * from bytes when the components are less than a byte in
- * size!
- */
- png_app_error(png_ptr,
- "png_set_filler is invalid for low bit depth gray output");
- return;
- }
-
- default:
- png_app_error(png_ptr,
- "png_set_filler: inappropriate color type");
- return;
- }
-# else
- png_app_error(png_ptr, "png_set_filler not supported on write");
- return;
-# endif
- }
-
- /* Here on success - libpng supports the operation, set the transformation
- * and the flag to say where the filler channel is.
- */
- png_ptr->transformations |= PNG_FILLER;
-
- if (filler_loc == PNG_FILLER_AFTER)
- png_ptr->flags |= PNG_FLAG_FILLER_AFTER;
-
- else
- png_ptr->flags &= ~PNG_FLAG_FILLER_AFTER;
-}
-
-/* Added to libpng-1.2.7 */
-void PNGAPI
-png_set_add_alpha(png_structrp png_ptr, png_uint_32 filler, int filler_loc)
-{
- png_debug(1, "in png_set_add_alpha");
-
- if (png_ptr == NULL)
- return;
-
- png_set_filler(png_ptr, filler, filler_loc);
- /* The above may fail to do anything. */
- if (png_ptr->transformations & PNG_FILLER)
- png_ptr->transformations |= PNG_ADD_ALPHA;
-}
-
-#endif
-
-#if defined(PNG_READ_SWAP_ALPHA_SUPPORTED) || \
- defined(PNG_WRITE_SWAP_ALPHA_SUPPORTED)
-void PNGAPI
-png_set_swap_alpha(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_swap_alpha");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->transformations |= PNG_SWAP_ALPHA;
-}
-#endif
-
-#if defined(PNG_READ_INVERT_ALPHA_SUPPORTED) || \
- defined(PNG_WRITE_INVERT_ALPHA_SUPPORTED)
-void PNGAPI
-png_set_invert_alpha(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_invert_alpha");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->transformations |= PNG_INVERT_ALPHA;
-}
-#endif
-
-#if defined(PNG_READ_INVERT_SUPPORTED) || defined(PNG_WRITE_INVERT_SUPPORTED)
-void PNGAPI
-png_set_invert_mono(png_structrp png_ptr)
-{
- png_debug(1, "in png_set_invert_mono");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->transformations |= PNG_INVERT_MONO;
-}
-
-/* Invert monochrome grayscale data */
-void /* PRIVATE */
-png_do_invert(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_invert");
-
- /* This test removed from libpng version 1.0.13 and 1.2.0:
- * if (row_info->bit_depth == 1 &&
- */
- if (row_info->color_type == PNG_COLOR_TYPE_GRAY)
- {
- png_bytep rp = row;
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
-
- for (i = 0; i < istop; i++)
- {
- *rp = (png_byte)(~(*rp));
- rp++;
- }
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
- row_info->bit_depth == 8)
- {
- png_bytep rp = row;
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
-
- for (i = 0; i < istop; i += 2)
- {
- *rp = (png_byte)(~(*rp));
- rp += 2;
- }
- }
-
-#ifdef PNG_16BIT_SUPPORTED
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA &&
- row_info->bit_depth == 16)
- {
- png_bytep rp = row;
- png_size_t i;
- png_size_t istop = row_info->rowbytes;
-
- for (i = 0; i < istop; i += 4)
- {
- *rp = (png_byte)(~(*rp));
- *(rp + 1) = (png_byte)(~(*(rp + 1)));
- rp += 4;
- }
- }
-#endif
-}
-#endif
-
-#ifdef PNG_16BIT_SUPPORTED
-#if defined(PNG_READ_SWAP_SUPPORTED) || defined(PNG_WRITE_SWAP_SUPPORTED)
-/* Swaps byte order on 16 bit depth images */
-void /* PRIVATE */
-png_do_swap(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_swap");
-
- if (row_info->bit_depth == 16)
- {
- png_bytep rp = row;
- png_uint_32 i;
- png_uint_32 istop= row_info->width * row_info->channels;
-
- for (i = 0; i < istop; i++, rp += 2)
- {
- png_byte t = *rp;
- *rp = *(rp + 1);
- *(rp + 1) = t;
- }
- }
-}
-#endif
-#endif
-
-#if defined(PNG_READ_PACKSWAP_SUPPORTED)||defined(PNG_WRITE_PACKSWAP_SUPPORTED)
-static PNG_CONST png_byte onebppswaptable[256] = {
- 0x00, 0x80, 0x40, 0xC0, 0x20, 0xA0, 0x60, 0xE0,
- 0x10, 0x90, 0x50, 0xD0, 0x30, 0xB0, 0x70, 0xF0,
- 0x08, 0x88, 0x48, 0xC8, 0x28, 0xA8, 0x68, 0xE8,
- 0x18, 0x98, 0x58, 0xD8, 0x38, 0xB8, 0x78, 0xF8,
- 0x04, 0x84, 0x44, 0xC4, 0x24, 0xA4, 0x64, 0xE4,
- 0x14, 0x94, 0x54, 0xD4, 0x34, 0xB4, 0x74, 0xF4,
- 0x0C, 0x8C, 0x4C, 0xCC, 0x2C, 0xAC, 0x6C, 0xEC,
- 0x1C, 0x9C, 0x5C, 0xDC, 0x3C, 0xBC, 0x7C, 0xFC,
- 0x02, 0x82, 0x42, 0xC2, 0x22, 0xA2, 0x62, 0xE2,
- 0x12, 0x92, 0x52, 0xD2, 0x32, 0xB2, 0x72, 0xF2,
- 0x0A, 0x8A, 0x4A, 0xCA, 0x2A, 0xAA, 0x6A, 0xEA,
- 0x1A, 0x9A, 0x5A, 0xDA, 0x3A, 0xBA, 0x7A, 0xFA,
- 0x06, 0x86, 0x46, 0xC6, 0x26, 0xA6, 0x66, 0xE6,
- 0x16, 0x96, 0x56, 0xD6, 0x36, 0xB6, 0x76, 0xF6,
- 0x0E, 0x8E, 0x4E, 0xCE, 0x2E, 0xAE, 0x6E, 0xEE,
- 0x1E, 0x9E, 0x5E, 0xDE, 0x3E, 0xBE, 0x7E, 0xFE,
- 0x01, 0x81, 0x41, 0xC1, 0x21, 0xA1, 0x61, 0xE1,
- 0x11, 0x91, 0x51, 0xD1, 0x31, 0xB1, 0x71, 0xF1,
- 0x09, 0x89, 0x49, 0xC9, 0x29, 0xA9, 0x69, 0xE9,
- 0x19, 0x99, 0x59, 0xD9, 0x39, 0xB9, 0x79, 0xF9,
- 0x05, 0x85, 0x45, 0xC5, 0x25, 0xA5, 0x65, 0xE5,
- 0x15, 0x95, 0x55, 0xD5, 0x35, 0xB5, 0x75, 0xF5,
- 0x0D, 0x8D, 0x4D, 0xCD, 0x2D, 0xAD, 0x6D, 0xED,
- 0x1D, 0x9D, 0x5D, 0xDD, 0x3D, 0xBD, 0x7D, 0xFD,
- 0x03, 0x83, 0x43, 0xC3, 0x23, 0xA3, 0x63, 0xE3,
- 0x13, 0x93, 0x53, 0xD3, 0x33, 0xB3, 0x73, 0xF3,
- 0x0B, 0x8B, 0x4B, 0xCB, 0x2B, 0xAB, 0x6B, 0xEB,
- 0x1B, 0x9B, 0x5B, 0xDB, 0x3B, 0xBB, 0x7B, 0xFB,
- 0x07, 0x87, 0x47, 0xC7, 0x27, 0xA7, 0x67, 0xE7,
- 0x17, 0x97, 0x57, 0xD7, 0x37, 0xB7, 0x77, 0xF7,
- 0x0F, 0x8F, 0x4F, 0xCF, 0x2F, 0xAF, 0x6F, 0xEF,
- 0x1F, 0x9F, 0x5F, 0xDF, 0x3F, 0xBF, 0x7F, 0xFF
-};
-
-static PNG_CONST png_byte twobppswaptable[256] = {
- 0x00, 0x40, 0x80, 0xC0, 0x10, 0x50, 0x90, 0xD0,
- 0x20, 0x60, 0xA0, 0xE0, 0x30, 0x70, 0xB0, 0xF0,
- 0x04, 0x44, 0x84, 0xC4, 0x14, 0x54, 0x94, 0xD4,
- 0x24, 0x64, 0xA4, 0xE4, 0x34, 0x74, 0xB4, 0xF4,
- 0x08, 0x48, 0x88, 0xC8, 0x18, 0x58, 0x98, 0xD8,
- 0x28, 0x68, 0xA8, 0xE8, 0x38, 0x78, 0xB8, 0xF8,
- 0x0C, 0x4C, 0x8C, 0xCC, 0x1C, 0x5C, 0x9C, 0xDC,
- 0x2C, 0x6C, 0xAC, 0xEC, 0x3C, 0x7C, 0xBC, 0xFC,
- 0x01, 0x41, 0x81, 0xC1, 0x11, 0x51, 0x91, 0xD1,
- 0x21, 0x61, 0xA1, 0xE1, 0x31, 0x71, 0xB1, 0xF1,
- 0x05, 0x45, 0x85, 0xC5, 0x15, 0x55, 0x95, 0xD5,
- 0x25, 0x65, 0xA5, 0xE5, 0x35, 0x75, 0xB5, 0xF5,
- 0x09, 0x49, 0x89, 0xC9, 0x19, 0x59, 0x99, 0xD9,
- 0x29, 0x69, 0xA9, 0xE9, 0x39, 0x79, 0xB9, 0xF9,
- 0x0D, 0x4D, 0x8D, 0xCD, 0x1D, 0x5D, 0x9D, 0xDD,
- 0x2D, 0x6D, 0xAD, 0xED, 0x3D, 0x7D, 0xBD, 0xFD,
- 0x02, 0x42, 0x82, 0xC2, 0x12, 0x52, 0x92, 0xD2,
- 0x22, 0x62, 0xA2, 0xE2, 0x32, 0x72, 0xB2, 0xF2,
- 0x06, 0x46, 0x86, 0xC6, 0x16, 0x56, 0x96, 0xD6,
- 0x26, 0x66, 0xA6, 0xE6, 0x36, 0x76, 0xB6, 0xF6,
- 0x0A, 0x4A, 0x8A, 0xCA, 0x1A, 0x5A, 0x9A, 0xDA,
- 0x2A, 0x6A, 0xAA, 0xEA, 0x3A, 0x7A, 0xBA, 0xFA,
- 0x0E, 0x4E, 0x8E, 0xCE, 0x1E, 0x5E, 0x9E, 0xDE,
- 0x2E, 0x6E, 0xAE, 0xEE, 0x3E, 0x7E, 0xBE, 0xFE,
- 0x03, 0x43, 0x83, 0xC3, 0x13, 0x53, 0x93, 0xD3,
- 0x23, 0x63, 0xA3, 0xE3, 0x33, 0x73, 0xB3, 0xF3,
- 0x07, 0x47, 0x87, 0xC7, 0x17, 0x57, 0x97, 0xD7,
- 0x27, 0x67, 0xA7, 0xE7, 0x37, 0x77, 0xB7, 0xF7,
- 0x0B, 0x4B, 0x8B, 0xCB, 0x1B, 0x5B, 0x9B, 0xDB,
- 0x2B, 0x6B, 0xAB, 0xEB, 0x3B, 0x7B, 0xBB, 0xFB,
- 0x0F, 0x4F, 0x8F, 0xCF, 0x1F, 0x5F, 0x9F, 0xDF,
- 0x2F, 0x6F, 0xAF, 0xEF, 0x3F, 0x7F, 0xBF, 0xFF
-};
-
-static PNG_CONST png_byte fourbppswaptable[256] = {
- 0x00, 0x10, 0x20, 0x30, 0x40, 0x50, 0x60, 0x70,
- 0x80, 0x90, 0xA0, 0xB0, 0xC0, 0xD0, 0xE0, 0xF0,
- 0x01, 0x11, 0x21, 0x31, 0x41, 0x51, 0x61, 0x71,
- 0x81, 0x91, 0xA1, 0xB1, 0xC1, 0xD1, 0xE1, 0xF1,
- 0x02, 0x12, 0x22, 0x32, 0x42, 0x52, 0x62, 0x72,
- 0x82, 0x92, 0xA2, 0xB2, 0xC2, 0xD2, 0xE2, 0xF2,
- 0x03, 0x13, 0x23, 0x33, 0x43, 0x53, 0x63, 0x73,
- 0x83, 0x93, 0xA3, 0xB3, 0xC3, 0xD3, 0xE3, 0xF3,
- 0x04, 0x14, 0x24, 0x34, 0x44, 0x54, 0x64, 0x74,
- 0x84, 0x94, 0xA4, 0xB4, 0xC4, 0xD4, 0xE4, 0xF4,
- 0x05, 0x15, 0x25, 0x35, 0x45, 0x55, 0x65, 0x75,
- 0x85, 0x95, 0xA5, 0xB5, 0xC5, 0xD5, 0xE5, 0xF5,
- 0x06, 0x16, 0x26, 0x36, 0x46, 0x56, 0x66, 0x76,
- 0x86, 0x96, 0xA6, 0xB6, 0xC6, 0xD6, 0xE6, 0xF6,
- 0x07, 0x17, 0x27, 0x37, 0x47, 0x57, 0x67, 0x77,
- 0x87, 0x97, 0xA7, 0xB7, 0xC7, 0xD7, 0xE7, 0xF7,
- 0x08, 0x18, 0x28, 0x38, 0x48, 0x58, 0x68, 0x78,
- 0x88, 0x98, 0xA8, 0xB8, 0xC8, 0xD8, 0xE8, 0xF8,
- 0x09, 0x19, 0x29, 0x39, 0x49, 0x59, 0x69, 0x79,
- 0x89, 0x99, 0xA9, 0xB9, 0xC9, 0xD9, 0xE9, 0xF9,
- 0x0A, 0x1A, 0x2A, 0x3A, 0x4A, 0x5A, 0x6A, 0x7A,
- 0x8A, 0x9A, 0xAA, 0xBA, 0xCA, 0xDA, 0xEA, 0xFA,
- 0x0B, 0x1B, 0x2B, 0x3B, 0x4B, 0x5B, 0x6B, 0x7B,
- 0x8B, 0x9B, 0xAB, 0xBB, 0xCB, 0xDB, 0xEB, 0xFB,
- 0x0C, 0x1C, 0x2C, 0x3C, 0x4C, 0x5C, 0x6C, 0x7C,
- 0x8C, 0x9C, 0xAC, 0xBC, 0xCC, 0xDC, 0xEC, 0xFC,
- 0x0D, 0x1D, 0x2D, 0x3D, 0x4D, 0x5D, 0x6D, 0x7D,
- 0x8D, 0x9D, 0xAD, 0xBD, 0xCD, 0xDD, 0xED, 0xFD,
- 0x0E, 0x1E, 0x2E, 0x3E, 0x4E, 0x5E, 0x6E, 0x7E,
- 0x8E, 0x9E, 0xAE, 0xBE, 0xCE, 0xDE, 0xEE, 0xFE,
- 0x0F, 0x1F, 0x2F, 0x3F, 0x4F, 0x5F, 0x6F, 0x7F,
- 0x8F, 0x9F, 0xAF, 0xBF, 0xCF, 0xDF, 0xEF, 0xFF
-};
-
-/* Swaps pixel packing order within bytes */
-void /* PRIVATE */
-png_do_packswap(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_packswap");
-
- if (row_info->bit_depth < 8)
- {
- png_bytep rp;
- png_const_bytep end, table;
-
- end = row + row_info->rowbytes;
-
- if (row_info->bit_depth == 1)
- table = onebppswaptable;
-
- else if (row_info->bit_depth == 2)
- table = twobppswaptable;
-
- else if (row_info->bit_depth == 4)
- table = fourbppswaptable;
-
- else
- return;
-
- for (rp = row; rp < end; rp++)
- *rp = table[*rp];
- }
-}
-#endif /* PNG_READ_PACKSWAP_SUPPORTED or PNG_WRITE_PACKSWAP_SUPPORTED */
-
-#if defined(PNG_WRITE_FILLER_SUPPORTED) || \
- defined(PNG_READ_STRIP_ALPHA_SUPPORTED)
-/* Remove a channel - this used to be 'png_do_strip_filler' but it used a
- * somewhat weird combination of flags to determine what to do. All the calls
- * to png_do_strip_filler are changed in 1.5.2 to call this instead with the
- * correct arguments.
- *
- * The routine isn't general - the channel must be the channel at the start or
- * end (not in the middle) of each pixel.
- */
-void /* PRIVATE */
-png_do_strip_channel(png_row_infop row_info, png_bytep row, int at_start)
-{
- png_bytep sp = row; /* source pointer */
- png_bytep dp = row; /* destination pointer */
- png_bytep ep = row + row_info->rowbytes; /* One beyond end of row */
-
- /* At the start sp will point to the first byte to copy and dp to where
- * it is copied to. ep always points just beyond the end of the row, so
- * the loop simply copies (channels-1) channels until sp reaches ep.
- *
- * at_start: 0 -- convert AG, XG, ARGB, XRGB, AAGG, XXGG, etc.
- * nonzero -- convert GA, GX, RGBA, RGBX, GGAA, RRGGBBXX, etc.
- */
-
- /* GA, GX, XG cases */
- if (row_info->channels == 2)
- {
- if (row_info->bit_depth == 8)
- {
- if (at_start) /* Skip initial filler */
- ++sp;
- else /* Skip initial channel and, for sp, the filler */
- sp += 2, ++dp;
-
- /* For a 1 pixel wide image there is nothing to do */
- while (sp < ep)
- *dp++ = *sp, sp += 2;
-
- row_info->pixel_depth = 8;
- }
-
- else if (row_info->bit_depth == 16)
- {
- if (at_start) /* Skip initial filler */
- sp += 2;
- else /* Skip initial channel and, for sp, the filler */
- sp += 4, dp += 2;
-
- while (sp < ep)
- *dp++ = *sp++, *dp++ = *sp, sp += 3;
-
- row_info->pixel_depth = 16;
- }
-
- else
- return; /* bad bit depth */
-
- row_info->channels = 1;
-
- /* Finally fix the color type if it records an alpha channel */
- if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- row_info->color_type = PNG_COLOR_TYPE_GRAY;
- }
-
- /* RGBA, RGBX, XRGB cases */
- else if (row_info->channels == 4)
- {
- if (row_info->bit_depth == 8)
- {
- if (at_start) /* Skip initial filler */
- ++sp;
- else /* Skip initial channels and, for sp, the filler */
- sp += 4, dp += 3;
-
- /* Note that the loop adds 3 to dp and 4 to sp each time. */
- while (sp < ep)
- *dp++ = *sp++, *dp++ = *sp++, *dp++ = *sp, sp += 2;
-
- row_info->pixel_depth = 24;
- }
-
- else if (row_info->bit_depth == 16)
- {
- if (at_start) /* Skip initial filler */
- sp += 2;
- else /* Skip initial channels and, for sp, the filler */
- sp += 8, dp += 6;
-
- while (sp < ep)
- {
- /* Copy 6 bytes, skip 2 */
- *dp++ = *sp++, *dp++ = *sp++;
- *dp++ = *sp++, *dp++ = *sp++;
- *dp++ = *sp++, *dp++ = *sp, sp += 3;
- }
-
- row_info->pixel_depth = 48;
- }
-
- else
- return; /* bad bit depth */
-
- row_info->channels = 3;
-
- /* Finally fix the color type if it records an alpha channel */
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- row_info->color_type = PNG_COLOR_TYPE_RGB;
- }
-
- else
- return; /* The filler channel has gone already */
-
- /* Fix the rowbytes value. */
- row_info->rowbytes = dp-row;
-}
-#endif
-
-#if defined(PNG_READ_BGR_SUPPORTED) || defined(PNG_WRITE_BGR_SUPPORTED)
-/* Swaps red and blue bytes within a pixel */
-void /* PRIVATE */
-png_do_bgr(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_bgr");
-
- if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
- {
- png_uint_32 row_width = row_info->width;
- if (row_info->bit_depth == 8)
- {
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- {
- png_bytep rp;
- png_uint_32 i;
-
- for (i = 0, rp = row; i < row_width; i++, rp += 3)
- {
- png_byte save = *rp;
- *rp = *(rp + 2);
- *(rp + 2) = save;
- }
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- png_bytep rp;
- png_uint_32 i;
-
- for (i = 0, rp = row; i < row_width; i++, rp += 4)
- {
- png_byte save = *rp;
- *rp = *(rp + 2);
- *(rp + 2) = save;
- }
- }
- }
-
-#ifdef PNG_16BIT_SUPPORTED
- else if (row_info->bit_depth == 16)
- {
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- {
- png_bytep rp;
- png_uint_32 i;
-
- for (i = 0, rp = row; i < row_width; i++, rp += 6)
- {
- png_byte save = *rp;
- *rp = *(rp + 4);
- *(rp + 4) = save;
- save = *(rp + 1);
- *(rp + 1) = *(rp + 5);
- *(rp + 5) = save;
- }
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- png_bytep rp;
- png_uint_32 i;
-
- for (i = 0, rp = row; i < row_width; i++, rp += 8)
- {
- png_byte save = *rp;
- *rp = *(rp + 4);
- *(rp + 4) = save;
- save = *(rp + 1);
- *(rp + 1) = *(rp + 5);
- *(rp + 5) = save;
- }
- }
- }
-#endif
- }
-}
-#endif /* PNG_READ_BGR_SUPPORTED or PNG_WRITE_BGR_SUPPORTED */
-
-#if defined(PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED) || \
- defined(PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED)
-/* Added at libpng-1.5.10 */
-void /* PRIVATE */
-png_do_check_palette_indexes(png_structrp png_ptr, png_row_infop row_info)
-{
- if (png_ptr->num_palette < (1 << row_info->bit_depth) &&
- png_ptr->num_palette > 0) /* num_palette can be 0 in MNG files */
- {
- /* Calculations moved outside switch in an attempt to stop different
- * compiler warnings. 'padding' is in *bits* within the last byte, it is
- * an 'int' because pixel_depth becomes an 'int' in the expression below,
- * and this calculation is used because it avoids warnings that other
- * forms produced on either GCC or MSVC.
- */
- int padding = (-row_info->pixel_depth * row_info->width) & 7;
- png_bytep rp = png_ptr->row_buf + row_info->rowbytes;
-
- switch (row_info->bit_depth)
- {
- case 1:
- {
- /* in this case, all bytes must be 0 so we don't need
- * to unpack the pixels except for the rightmost one.
- */
- for (; rp > png_ptr->row_buf; rp--)
- {
- if (*rp >> padding != 0)
- png_ptr->num_palette_max = 1;
- padding = 0;
- }
-
- break;
- }
-
- case 2:
- {
- for (; rp > png_ptr->row_buf; rp--)
- {
- int i = ((*rp >> padding) & 0x03);
-
- if (i > png_ptr->num_palette_max)
- png_ptr->num_palette_max = i;
-
- i = (((*rp >> padding) >> 2) & 0x03);
-
- if (i > png_ptr->num_palette_max)
- png_ptr->num_palette_max = i;
-
- i = (((*rp >> padding) >> 4) & 0x03);
-
- if (i > png_ptr->num_palette_max)
- png_ptr->num_palette_max = i;
-
- i = (((*rp >> padding) >> 6) & 0x03);
-
- if (i > png_ptr->num_palette_max)
- png_ptr->num_palette_max = i;
-
- padding = 0;
- }
-
- break;
- }
-
- case 4:
- {
- for (; rp > png_ptr->row_buf; rp--)
- {
- int i = ((*rp >> padding) & 0x0f);
-
- if (i > png_ptr->num_palette_max)
- png_ptr->num_palette_max = i;
-
- i = (((*rp >> padding) >> 4) & 0x0f);
-
- if (i > png_ptr->num_palette_max)
- png_ptr->num_palette_max = i;
-
- padding = 0;
- }
-
- break;
- }
-
- case 8:
- {
- for (; rp > png_ptr->row_buf; rp--)
- {
- if (*rp > png_ptr->num_palette_max)
- png_ptr->num_palette_max = (int) *rp;
- }
-
- break;
- }
-
- default:
- break;
- }
- }
-}
-#endif /* PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED */
-
-#if defined(PNG_READ_USER_TRANSFORM_SUPPORTED) || \
- defined(PNG_WRITE_USER_TRANSFORM_SUPPORTED)
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-void PNGAPI
-png_set_user_transform_info(png_structrp png_ptr, png_voidp
- user_transform_ptr, int user_transform_depth, int user_transform_channels)
-{
- png_debug(1, "in png_set_user_transform_info");
-
- if (png_ptr == NULL)
- return;
-
-#ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
- if ((png_ptr->mode & PNG_IS_READ_STRUCT) != 0 &&
- (png_ptr->flags & PNG_FLAG_ROW_INIT) != 0)
- {
- png_app_error(png_ptr,
- "info change after png_start_read_image or png_read_update_info");
- return;
- }
-#endif
-
- png_ptr->user_transform_ptr = user_transform_ptr;
- png_ptr->user_transform_depth = (png_byte)user_transform_depth;
- png_ptr->user_transform_channels = (png_byte)user_transform_channels;
-}
-#endif
-
-/* This function returns a pointer to the user_transform_ptr associated with
- * the user transform functions. The application should free any memory
- * associated with this pointer before png_write_destroy and png_read_destroy
- * are called.
- */
-#ifdef PNG_USER_TRANSFORM_PTR_SUPPORTED
-png_voidp PNGAPI
-png_get_user_transform_ptr(png_const_structrp png_ptr)
-{
- if (png_ptr == NULL)
- return (NULL);
-
- return png_ptr->user_transform_ptr;
-}
-#endif
-
-#ifdef PNG_USER_TRANSFORM_INFO_SUPPORTED
-png_uint_32 PNGAPI
-png_get_current_row_number(png_const_structrp png_ptr)
-{
- /* See the comments in png.h - this is the sub-image row when reading and
- * interlaced image.
- */
- if (png_ptr != NULL)
- return png_ptr->row_number;
-
- return PNG_UINT_32_MAX; /* help the app not to fail silently */
-}
-
-png_byte PNGAPI
-png_get_current_pass_number(png_const_structrp png_ptr)
-{
- if (png_ptr != NULL)
- return png_ptr->pass;
- return 8; /* invalid */
-}
-#endif /* PNG_USER_TRANSFORM_INFO_SUPPORTED */
-#endif /* PNG_READ_USER_TRANSFORM_SUPPORTED ||
- PNG_WRITE_USER_TRANSFORM_SUPPORTED */
-#endif /* PNG_READ_SUPPORTED || PNG_WRITE_SUPPORTED */
+++ /dev/null
-# pngusr.dfa
-#
-# Build time configuration of libpng
-#
-# Enter build configuration options in this file
-#
-# Security settings: by default these limits are unset, you can change them
-# here by entering the appropriate values as #defines preceded by '@' (to cause,
-# them to be passed through to the build of pnglibconf.h), for example:
-#
-# @# define PNG_USER_WIDTH_MAX 1000000
-# @# define PNG_USER_HEIGHT_MAX 1000000
-# @# define PNG_USER_CHUNK_CACHE_MAX 128
-# @# define PNG_USER_CHUNK_MALLOC_MAX 8000000
+++ /dev/null
-
-/* pngwio.c - functions for data output
- *
- * Last changed in libpng 1.6.0 [February 14, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- *
- * This file provides a location for all output. Users who need
- * special handling are expected to write functions that have the same
- * arguments as these and perform similar functions, but that possibly
- * use different output methods. Note that you shouldn't change these
- * functions, but rather write replacement functions and then change
- * them at run time with png_set_write_fn(...).
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_WRITE_SUPPORTED
-
-/* Write the data to whatever output you are using. The default routine
- * writes to a file pointer. Note that this routine sometimes gets called
- * with very small lengths, so you should implement some kind of simple
- * buffering if you are using unbuffered writes. This should never be asked
- * to write more than 64K on a 16 bit machine.
- */
-
-void /* PRIVATE */
-png_write_data(png_structrp png_ptr, png_const_bytep data, png_size_t length)
-{
- /* NOTE: write_data_fn must not change the buffer! */
- if (png_ptr->write_data_fn != NULL )
- (*(png_ptr->write_data_fn))(png_ptr, png_constcast(png_bytep,data),
- length);
-
- else
- png_error(png_ptr, "Call to NULL write function");
-}
-
-#ifdef PNG_STDIO_SUPPORTED
-/* This is the function that does the actual writing of data. If you are
- * not writing to a standard C stream, you should create a replacement
- * write_data function and use it at run time with png_set_write_fn(), rather
- * than changing the library.
- */
-void PNGCBAPI
-png_default_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
-{
- png_size_t check;
-
- if (png_ptr == NULL)
- return;
-
- check = fwrite(data, 1, length, (png_FILE_p)(png_ptr->io_ptr));
-
- if (check != length)
- png_error(png_ptr, "Write Error");
-}
-#endif
-
-/* This function is called to output any data pending writing (normally
- * to disk). After png_flush is called, there should be no data pending
- * writing in any buffers.
- */
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-void /* PRIVATE */
-png_flush(png_structrp png_ptr)
-{
- if (png_ptr->output_flush_fn != NULL)
- (*(png_ptr->output_flush_fn))(png_ptr);
-}
-
-# ifdef PNG_STDIO_SUPPORTED
-void PNGCBAPI
-png_default_flush(png_structp png_ptr)
-{
- png_FILE_p io_ptr;
-
- if (png_ptr == NULL)
- return;
-
- io_ptr = png_voidcast(png_FILE_p, (png_ptr->io_ptr));
- fflush(io_ptr);
-}
-# endif
-#endif
-
-/* This function allows the application to supply new output functions for
- * libpng if standard C streams aren't being used.
- *
- * This function takes as its arguments:
- * png_ptr - pointer to a png output data structure
- * io_ptr - pointer to user supplied structure containing info about
- * the output functions. May be NULL.
- * write_data_fn - pointer to a new output function that takes as its
- * arguments a pointer to a png_struct, a pointer to
- * data to be written, and a 32-bit unsigned int that is
- * the number of bytes to be written. The new write
- * function should call png_error(png_ptr, "Error msg")
- * to exit and output any fatal error messages. May be
- * NULL, in which case libpng's default function will
- * be used.
- * flush_data_fn - pointer to a new flush function that takes as its
- * arguments a pointer to a png_struct. After a call to
- * the flush function, there should be no data in any buffers
- * or pending transmission. If the output method doesn't do
- * any buffering of output, a function prototype must still be
- * supplied although it doesn't have to do anything. If
- * PNG_WRITE_FLUSH_SUPPORTED is not defined at libpng compile
- * time, output_flush_fn will be ignored, although it must be
- * supplied for compatibility. May be NULL, in which case
- * libpng's default function will be used, if
- * PNG_WRITE_FLUSH_SUPPORTED is defined. This is not
- * a good idea if io_ptr does not point to a standard
- * *FILE structure.
- */
-void PNGAPI
-png_set_write_fn(png_structrp png_ptr, png_voidp io_ptr,
- png_rw_ptr write_data_fn, png_flush_ptr output_flush_fn)
-{
- if (png_ptr == NULL)
- return;
-
- png_ptr->io_ptr = io_ptr;
-
-#ifdef PNG_STDIO_SUPPORTED
- if (write_data_fn != NULL)
- png_ptr->write_data_fn = write_data_fn;
-
- else
- png_ptr->write_data_fn = png_default_write_data;
-#else
- png_ptr->write_data_fn = write_data_fn;
-#endif
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-# ifdef PNG_STDIO_SUPPORTED
-
- if (output_flush_fn != NULL)
- png_ptr->output_flush_fn = output_flush_fn;
-
- else
- png_ptr->output_flush_fn = png_default_flush;
-
-# else
- png_ptr->output_flush_fn = output_flush_fn;
-# endif
-#endif /* PNG_WRITE_FLUSH_SUPPORTED */
-
- /* It is an error to read while writing a png file */
- if (png_ptr->read_data_fn != NULL)
- {
- png_ptr->read_data_fn = NULL;
-
- png_warning(png_ptr,
- "Can't set both read_data_fn and write_data_fn in the"
- " same structure");
- }
-}
-#endif /* PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pngwrite.c - general routines to write a PNG file
- *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#include "pngpriv.h"
-#if defined(PNG_SIMPLIFIED_WRITE_SUPPORTED) && defined(PNG_STDIO_SUPPORTED)
-# include <errno.h>
-#endif
-
-#ifdef PNG_WRITE_SUPPORTED
-
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
-/* Write out all the unknown chunks for the current given location */
-static void
-write_unknown_chunks(png_structrp png_ptr, png_const_inforp info_ptr,
- unsigned int where)
-{
- if (info_ptr->unknown_chunks_num)
- {
- png_const_unknown_chunkp up;
-
- png_debug(5, "writing extra chunks");
-
- for (up = info_ptr->unknown_chunks;
- up < info_ptr->unknown_chunks + info_ptr->unknown_chunks_num;
- ++up)
- if (up->location & where)
- {
- /* If per-chunk unknown chunk handling is enabled use it, otherwise
- * just write the chunks the application has set.
- */
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- int keep = png_handle_as_unknown(png_ptr, up->name);
-
- /* NOTE: this code is radically different from the read side in the
- * matter of handling an ancillary unknown chunk. In the read side
- * the default behavior is to discard it, in the code below the default
- * behavior is to write it. Critical chunks are, however, only
- * written if explicitly listed or if the default is set to write all
- * unknown chunks.
- *
- * The default handling is also slightly weird - it is not possible to
- * stop the writing of all unsafe-to-copy chunks!
- *
- * TODO: REVIEW: this would seem to be a bug.
- */
- if (keep != PNG_HANDLE_CHUNK_NEVER &&
- ((up->name[3] & 0x20) /* safe-to-copy overrides everything */ ||
- keep == PNG_HANDLE_CHUNK_ALWAYS ||
- (keep == PNG_HANDLE_CHUNK_AS_DEFAULT &&
- png_ptr->unknown_default == PNG_HANDLE_CHUNK_ALWAYS)))
-#endif
- {
- /* TODO: review, what is wrong with a zero length unknown chunk? */
- if (up->size == 0)
- png_warning(png_ptr, "Writing zero-length unknown chunk");
-
- png_write_chunk(png_ptr, up->name, up->data, up->size);
- }
- }
- }
-}
-#endif /* PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED */
-
-/* Writes all the PNG information. This is the suggested way to use the
- * library. If you have a new chunk to add, make a function to write it,
- * and put it in the correct location here. If you want the chunk written
- * after the image data, put it in png_write_end(). I strongly encourage
- * you to supply a PNG_INFO_ flag, and check info_ptr->valid before writing
- * the chunk, as that will keep the code from breaking if you want to just
- * write a plain PNG file. If you have long comments, I suggest writing
- * them in png_write_end(), and compressing them.
- */
-void PNGAPI
-png_write_info_before_PLTE(png_structrp png_ptr, png_const_inforp info_ptr)
-{
- png_debug(1, "in png_write_info_before_PLTE");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
- {
- /* Write PNG signature */
- png_write_sig(png_ptr);
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- if ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) && \
- (png_ptr->mng_features_permitted))
- {
- png_warning(png_ptr, "MNG features are not allowed in a PNG datastream");
- png_ptr->mng_features_permitted = 0;
- }
-#endif
-
- /* Write IHDR information. */
- png_write_IHDR(png_ptr, info_ptr->width, info_ptr->height,
- info_ptr->bit_depth, info_ptr->color_type, info_ptr->compression_type,
- info_ptr->filter_type,
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- info_ptr->interlace_type
-#else
- 0
-#endif
- );
-
- /* The rest of these check to see if the valid field has the appropriate
- * flag set, and if it does, writes the chunk.
- *
- * 1.6.0: COLORSPACE support controls the writing of these chunks too, and
- * the chunks will be written if the WRITE routine is there and information
- * is available in the COLORSPACE. (See png_colorspace_sync_info in png.c
- * for where the valid flags get set.)
- *
- * Under certain circumstances the colorspace can be invalidated without
- * syncing the info_struct 'valid' flags; this happens if libpng detects and
- * error and calls png_error while the color space is being set, yet the
- * application continues writing the PNG. So check the 'invalid' flag here
- * too.
- */
-#ifdef PNG_GAMMA_SUPPORTED
-# ifdef PNG_WRITE_gAMA_SUPPORTED
- if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_gAMA) &&
- (info_ptr->valid & PNG_INFO_gAMA))
- png_write_gAMA_fixed(png_ptr, info_ptr->colorspace.gamma);
-# endif
-#endif
-
-#ifdef PNG_COLORSPACE_SUPPORTED
- /* Write only one of sRGB or an ICC profile. If a profile was supplied
- * and it matches one of the known sRGB ones issue a warning.
- */
-# ifdef PNG_WRITE_iCCP_SUPPORTED
- if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
- (info_ptr->valid & PNG_INFO_iCCP))
- {
-# ifdef PNG_WRITE_sRGB_SUPPORTED
- if (info_ptr->valid & PNG_INFO_sRGB)
- png_app_warning(png_ptr,
- "profile matches sRGB but writing iCCP instead");
-# endif
-
- png_write_iCCP(png_ptr, info_ptr->iccp_name,
- info_ptr->iccp_profile);
- }
-# ifdef PNG_WRITE_sRGB_SUPPORTED
- else
-# endif
-# endif
-
-# ifdef PNG_WRITE_sRGB_SUPPORTED
- if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
- (info_ptr->valid & PNG_INFO_sRGB))
- png_write_sRGB(png_ptr, info_ptr->colorspace.rendering_intent);
-# endif /* WRITE_sRGB */
-#endif /* COLORSPACE */
-
-#ifdef PNG_WRITE_sBIT_SUPPORTED
- if (info_ptr->valid & PNG_INFO_sBIT)
- png_write_sBIT(png_ptr, &(info_ptr->sig_bit), info_ptr->color_type);
-#endif
-
-#ifdef PNG_COLORSPACE_SUPPORTED
-# ifdef PNG_WRITE_cHRM_SUPPORTED
- if (!(info_ptr->colorspace.flags & PNG_COLORSPACE_INVALID) &&
- (info_ptr->colorspace.flags & PNG_COLORSPACE_FROM_cHRM) &&
- (info_ptr->valid & PNG_INFO_cHRM))
- png_write_cHRM_fixed(png_ptr, &info_ptr->colorspace.end_points_xy);
-# endif
-#endif
-
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- write_unknown_chunks(png_ptr, info_ptr, PNG_HAVE_IHDR);
-#endif
-
- png_ptr->mode |= PNG_WROTE_INFO_BEFORE_PLTE;
- }
-}
-
-void PNGAPI
-png_write_info(png_structrp png_ptr, png_const_inforp info_ptr)
-{
-#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
- int i;
-#endif
-
- png_debug(1, "in png_write_info");
-
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- png_write_info_before_PLTE(png_ptr, info_ptr);
-
- if (info_ptr->valid & PNG_INFO_PLTE)
- png_write_PLTE(png_ptr, info_ptr->palette,
- (png_uint_32)info_ptr->num_palette);
-
- else if (info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- png_error(png_ptr, "Valid palette required for paletted images");
-
-#ifdef PNG_WRITE_tRNS_SUPPORTED
- if (info_ptr->valid & PNG_INFO_tRNS)
- {
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
- /* Invert the alpha channel (in tRNS) */
- if ((png_ptr->transformations & PNG_INVERT_ALPHA) &&
- info_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- int j;
- for (j = 0; j<(int)info_ptr->num_trans; j++)
- info_ptr->trans_alpha[j] =
- (png_byte)(255 - info_ptr->trans_alpha[j]);
- }
-#endif
- png_write_tRNS(png_ptr, info_ptr->trans_alpha, &(info_ptr->trans_color),
- info_ptr->num_trans, info_ptr->color_type);
- }
-#endif
-#ifdef PNG_WRITE_bKGD_SUPPORTED
- if (info_ptr->valid & PNG_INFO_bKGD)
- png_write_bKGD(png_ptr, &(info_ptr->background), info_ptr->color_type);
-#endif
-
-#ifdef PNG_WRITE_hIST_SUPPORTED
- if (info_ptr->valid & PNG_INFO_hIST)
- png_write_hIST(png_ptr, info_ptr->hist, info_ptr->num_palette);
-#endif
-
-#ifdef PNG_WRITE_oFFs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_oFFs)
- png_write_oFFs(png_ptr, info_ptr->x_offset, info_ptr->y_offset,
- info_ptr->offset_unit_type);
-#endif
-
-#ifdef PNG_WRITE_pCAL_SUPPORTED
- if (info_ptr->valid & PNG_INFO_pCAL)
- png_write_pCAL(png_ptr, info_ptr->pcal_purpose, info_ptr->pcal_X0,
- info_ptr->pcal_X1, info_ptr->pcal_type, info_ptr->pcal_nparams,
- info_ptr->pcal_units, info_ptr->pcal_params);
-#endif
-
-#ifdef PNG_WRITE_sCAL_SUPPORTED
- if (info_ptr->valid & PNG_INFO_sCAL)
- png_write_sCAL_s(png_ptr, (int)info_ptr->scal_unit,
- info_ptr->scal_s_width, info_ptr->scal_s_height);
-#endif /* sCAL */
-
-#ifdef PNG_WRITE_pHYs_SUPPORTED
- if (info_ptr->valid & PNG_INFO_pHYs)
- png_write_pHYs(png_ptr, info_ptr->x_pixels_per_unit,
- info_ptr->y_pixels_per_unit, info_ptr->phys_unit_type);
-#endif /* pHYs */
-
-#ifdef PNG_WRITE_tIME_SUPPORTED
- if (info_ptr->valid & PNG_INFO_tIME)
- {
- png_write_tIME(png_ptr, &(info_ptr->mod_time));
- png_ptr->mode |= PNG_WROTE_tIME;
- }
-#endif /* tIME */
-
-#ifdef PNG_WRITE_sPLT_SUPPORTED
- if (info_ptr->valid & PNG_INFO_sPLT)
- for (i = 0; i < (int)info_ptr->splt_palettes_num; i++)
- png_write_sPLT(png_ptr, info_ptr->splt_palettes + i);
-#endif /* sPLT */
-
-#ifdef PNG_WRITE_TEXT_SUPPORTED
- /* Check to see if we need to write text chunks */
- for (i = 0; i < info_ptr->num_text; i++)
- {
- png_debug2(2, "Writing header text chunk %d, type %d", i,
- info_ptr->text[i].compression);
- /* An internationalized chunk? */
- if (info_ptr->text[i].compression > 0)
- {
-#ifdef PNG_WRITE_iTXt_SUPPORTED
- /* Write international chunk */
- png_write_iTXt(png_ptr,
- info_ptr->text[i].compression,
- info_ptr->text[i].key,
- info_ptr->text[i].lang,
- info_ptr->text[i].lang_key,
- info_ptr->text[i].text);
-#else
- png_warning(png_ptr, "Unable to write international text");
-#endif
- /* Mark this chunk as written */
- info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
- }
-
- /* If we want a compressed text chunk */
- else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_zTXt)
- {
-#ifdef PNG_WRITE_zTXt_SUPPORTED
- /* Write compressed chunk */
- png_write_zTXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text, 0,
- info_ptr->text[i].compression);
-#else
- png_warning(png_ptr, "Unable to write compressed text");
-#endif
- /* Mark this chunk as written */
- info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
- }
-
- else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
- {
-#ifdef PNG_WRITE_tEXt_SUPPORTED
- /* Write uncompressed chunk */
- png_write_tEXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text,
- 0);
- /* Mark this chunk as written */
- info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
-#else
- /* Can't get here */
- png_warning(png_ptr, "Unable to write uncompressed text");
-#endif
- }
- }
-#endif /* tEXt */
-
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- write_unknown_chunks(png_ptr, info_ptr, PNG_HAVE_PLTE);
-#endif
-}
-
-/* Writes the end of the PNG file. If you don't want to write comments or
- * time information, you can pass NULL for info. If you already wrote these
- * in png_write_info(), do not write them again here. If you have long
- * comments, I suggest writing them here, and compressing them.
- */
-void PNGAPI
-png_write_end(png_structrp png_ptr, png_inforp info_ptr)
-{
- png_debug(1, "in png_write_end");
-
- if (png_ptr == NULL)
- return;
-
- if (!(png_ptr->mode & PNG_HAVE_IDAT))
- png_error(png_ptr, "No IDATs written into file");
-
-#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
- if (png_ptr->num_palette_max > png_ptr->num_palette)
- png_benign_error(png_ptr, "Wrote palette index exceeding num_palette");
-#endif
-
- /* See if user wants us to write information chunks */
- if (info_ptr != NULL)
- {
-#ifdef PNG_WRITE_TEXT_SUPPORTED
- int i; /* local index variable */
-#endif
-#ifdef PNG_WRITE_tIME_SUPPORTED
- /* Check to see if user has supplied a time chunk */
- if ((info_ptr->valid & PNG_INFO_tIME) &&
- !(png_ptr->mode & PNG_WROTE_tIME))
- png_write_tIME(png_ptr, &(info_ptr->mod_time));
-
-#endif
-#ifdef PNG_WRITE_TEXT_SUPPORTED
- /* Loop through comment chunks */
- for (i = 0; i < info_ptr->num_text; i++)
- {
- png_debug2(2, "Writing trailer text chunk %d, type %d", i,
- info_ptr->text[i].compression);
- /* An internationalized chunk? */
- if (info_ptr->text[i].compression > 0)
- {
-#ifdef PNG_WRITE_iTXt_SUPPORTED
- /* Write international chunk */
- png_write_iTXt(png_ptr,
- info_ptr->text[i].compression,
- info_ptr->text[i].key,
- info_ptr->text[i].lang,
- info_ptr->text[i].lang_key,
- info_ptr->text[i].text);
-#else
- png_warning(png_ptr, "Unable to write international text");
-#endif
- /* Mark this chunk as written */
- info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
- }
-
- else if (info_ptr->text[i].compression >= PNG_TEXT_COMPRESSION_zTXt)
- {
-#ifdef PNG_WRITE_zTXt_SUPPORTED
- /* Write compressed chunk */
- png_write_zTXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text, 0,
- info_ptr->text[i].compression);
-#else
- png_warning(png_ptr, "Unable to write compressed text");
-#endif
- /* Mark this chunk as written */
- info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_zTXt_WR;
- }
-
- else if (info_ptr->text[i].compression == PNG_TEXT_COMPRESSION_NONE)
- {
-#ifdef PNG_WRITE_tEXt_SUPPORTED
- /* Write uncompressed chunk */
- png_write_tEXt(png_ptr, info_ptr->text[i].key,
- info_ptr->text[i].text, 0);
-#else
- png_warning(png_ptr, "Unable to write uncompressed text");
-#endif
-
- /* Mark this chunk as written */
- info_ptr->text[i].compression = PNG_TEXT_COMPRESSION_NONE_WR;
- }
- }
-#endif
-#ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
- write_unknown_chunks(png_ptr, info_ptr, PNG_AFTER_IDAT);
-#endif
- }
-
- png_ptr->mode |= PNG_AFTER_IDAT;
-
- /* Write end of PNG file */
- png_write_IEND(png_ptr);
- /* This flush, added in libpng-1.0.8, removed from libpng-1.0.9beta03,
- * and restored again in libpng-1.2.30, may cause some applications that
- * do not set png_ptr->output_flush_fn to crash. If your application
- * experiences a problem, please try building libpng with
- * PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED defined, and report the event to
- * png-mng-implement at lists.sf.net .
- */
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-# ifdef PNG_WRITE_FLUSH_AFTER_IEND_SUPPORTED
- png_flush(png_ptr);
-# endif
-#endif
-}
-
-#ifdef PNG_CONVERT_tIME_SUPPORTED
-void PNGAPI
-png_convert_from_struct_tm(png_timep ptime, PNG_CONST struct tm * ttime)
-{
- png_debug(1, "in png_convert_from_struct_tm");
-
- ptime->year = (png_uint_16)(1900 + ttime->tm_year);
- ptime->month = (png_byte)(ttime->tm_mon + 1);
- ptime->day = (png_byte)ttime->tm_mday;
- ptime->hour = (png_byte)ttime->tm_hour;
- ptime->minute = (png_byte)ttime->tm_min;
- ptime->second = (png_byte)ttime->tm_sec;
-}
-
-void PNGAPI
-png_convert_from_time_t(png_timep ptime, time_t ttime)
-{
- struct tm *tbuf;
-
- png_debug(1, "in png_convert_from_time_t");
-
- tbuf = gmtime(&ttime);
- png_convert_from_struct_tm(ptime, tbuf);
-}
-#endif
-
-/* Initialize png_ptr structure, and allocate any memory needed */
-PNG_FUNCTION(png_structp,PNGAPI
-png_create_write_struct,(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn),PNG_ALLOCATED)
-{
-#ifndef PNG_USER_MEM_SUPPORTED
- png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
- error_fn, warn_fn, NULL, NULL, NULL);
-#else
- return png_create_write_struct_2(user_png_ver, error_ptr, error_fn,
- warn_fn, NULL, NULL, NULL);
-}
-
-/* Alternate initialize png_ptr structure, and allocate any memory needed */
-PNG_FUNCTION(png_structp,PNGAPI
-png_create_write_struct_2,(png_const_charp user_png_ver, png_voidp error_ptr,
- png_error_ptr error_fn, png_error_ptr warn_fn, png_voidp mem_ptr,
- png_malloc_ptr malloc_fn, png_free_ptr free_fn),PNG_ALLOCATED)
-{
- png_structrp png_ptr = png_create_png_struct(user_png_ver, error_ptr,
- error_fn, warn_fn, mem_ptr, malloc_fn, free_fn);
-#endif /* PNG_USER_MEM_SUPPORTED */
- if (png_ptr != NULL)
- {
- /* Set the zlib control values to defaults; they can be overridden by the
- * application after the struct has been created.
- */
- png_ptr->zbuffer_size = PNG_ZBUF_SIZE;
-
- /* The 'zlib_strategy' setting is irrelevant because png_default_claim in
- * pngwutil.c defaults it according to whether or not filters will be
- * used, and ignores this setting.
- */
- png_ptr->zlib_strategy = PNG_Z_DEFAULT_STRATEGY;
- png_ptr->zlib_level = PNG_Z_DEFAULT_COMPRESSION;
- png_ptr->zlib_mem_level = 8;
- png_ptr->zlib_window_bits = 15;
- png_ptr->zlib_method = 8;
-
-#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
- png_ptr->zlib_text_strategy = PNG_TEXT_Z_DEFAULT_STRATEGY;
- png_ptr->zlib_text_level = PNG_TEXT_Z_DEFAULT_COMPRESSION;
- png_ptr->zlib_text_mem_level = 8;
- png_ptr->zlib_text_window_bits = 15;
- png_ptr->zlib_text_method = 8;
-#endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */
-
- /* This is a highly dubious configuration option; by default it is off,
- * but it may be appropriate for private builds that are testing
- * extensions not conformant to the current specification, or of
- * applications that must not fail to write at all costs!
- */
-#ifdef PNG_BENIGN_WRITE_ERRORS_SUPPORTED
- png_ptr->flags |= PNG_FLAG_BENIGN_ERRORS_WARN;
- /* In stable builds only warn if an application error can be completely
- * handled.
- */
-#endif
-
- /* App warnings are warnings in release (or release candidate) builds but
- * are errors during development.
- */
-#if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
- png_ptr->flags |= PNG_FLAG_APP_WARNINGS_WARN;
-#endif
-
- /* TODO: delay this, it can be done in png_init_io() (if the app doesn't
- * do it itself) avoiding setting the default function if it is not
- * required.
- */
- png_set_write_fn(png_ptr, NULL, NULL, NULL);
- }
-
- return png_ptr;
-}
-
-
-/* Write a few rows of image data. If the image is interlaced,
- * either you will have to write the 7 sub images, or, if you
- * have called png_set_interlace_handling(), you will have to
- * "write" the image seven times.
- */
-void PNGAPI
-png_write_rows(png_structrp png_ptr, png_bytepp row,
- png_uint_32 num_rows)
-{
- png_uint_32 i; /* row counter */
- png_bytepp rp; /* row pointer */
-
- png_debug(1, "in png_write_rows");
-
- if (png_ptr == NULL)
- return;
-
- /* Loop through the rows */
- for (i = 0, rp = row; i < num_rows; i++, rp++)
- {
- png_write_row(png_ptr, *rp);
- }
-}
-
-/* Write the image. You only need to call this function once, even
- * if you are writing an interlaced image.
- */
-void PNGAPI
-png_write_image(png_structrp png_ptr, png_bytepp image)
-{
- png_uint_32 i; /* row index */
- int pass, num_pass; /* pass variables */
- png_bytepp rp; /* points to current row */
-
- if (png_ptr == NULL)
- return;
-
- png_debug(1, "in png_write_image");
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* Initialize interlace handling. If image is not interlaced,
- * this will set pass to 1
- */
- num_pass = png_set_interlace_handling(png_ptr);
-#else
- num_pass = 1;
-#endif
- /* Loop through passes */
- for (pass = 0; pass < num_pass; pass++)
- {
- /* Loop through image */
- for (i = 0, rp = image; i < png_ptr->height; i++, rp++)
- {
- png_write_row(png_ptr, *rp);
- }
- }
-}
-
-/* Called by user to write a row of image data */
-void PNGAPI
-png_write_row(png_structrp png_ptr, png_const_bytep row)
-{
- /* 1.5.6: moved from png_struct to be a local structure: */
- png_row_info row_info;
-
- if (png_ptr == NULL)
- return;
-
- png_debug2(1, "in png_write_row (row %u, pass %d)",
- png_ptr->row_number, png_ptr->pass);
-
- /* Initialize transformations and other stuff if first time */
- if (png_ptr->row_number == 0 && png_ptr->pass == 0)
- {
- /* Make sure we wrote the header info */
- if (!(png_ptr->mode & PNG_WROTE_INFO_BEFORE_PLTE))
- png_error(png_ptr,
- "png_write_info was never called before png_write_row");
-
- /* Check for transforms that have been set but were defined out */
-#if !defined(PNG_WRITE_INVERT_SUPPORTED) && defined(PNG_READ_INVERT_SUPPORTED)
- if (png_ptr->transformations & PNG_INVERT_MONO)
- png_warning(png_ptr, "PNG_WRITE_INVERT_SUPPORTED is not defined");
-#endif
-
-#if !defined(PNG_WRITE_FILLER_SUPPORTED) && defined(PNG_READ_FILLER_SUPPORTED)
- if (png_ptr->transformations & PNG_FILLER)
- png_warning(png_ptr, "PNG_WRITE_FILLER_SUPPORTED is not defined");
-#endif
-#if !defined(PNG_WRITE_PACKSWAP_SUPPORTED) && \
- defined(PNG_READ_PACKSWAP_SUPPORTED)
- if (png_ptr->transformations & PNG_PACKSWAP)
- png_warning(png_ptr,
- "PNG_WRITE_PACKSWAP_SUPPORTED is not defined");
-#endif
-
-#if !defined(PNG_WRITE_PACK_SUPPORTED) && defined(PNG_READ_PACK_SUPPORTED)
- if (png_ptr->transformations & PNG_PACK)
- png_warning(png_ptr, "PNG_WRITE_PACK_SUPPORTED is not defined");
-#endif
-
-#if !defined(PNG_WRITE_SHIFT_SUPPORTED) && defined(PNG_READ_SHIFT_SUPPORTED)
- if (png_ptr->transformations & PNG_SHIFT)
- png_warning(png_ptr, "PNG_WRITE_SHIFT_SUPPORTED is not defined");
-#endif
-
-#if !defined(PNG_WRITE_BGR_SUPPORTED) && defined(PNG_READ_BGR_SUPPORTED)
- if (png_ptr->transformations & PNG_BGR)
- png_warning(png_ptr, "PNG_WRITE_BGR_SUPPORTED is not defined");
-#endif
-
-#if !defined(PNG_WRITE_SWAP_SUPPORTED) && defined(PNG_READ_SWAP_SUPPORTED)
- if (png_ptr->transformations & PNG_SWAP_BYTES)
- png_warning(png_ptr, "PNG_WRITE_SWAP_SUPPORTED is not defined");
-#endif
-
- png_write_start_row(png_ptr);
- }
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* If interlaced and not interested in row, return */
- if (png_ptr->interlaced && (png_ptr->transformations & PNG_INTERLACE))
- {
- switch (png_ptr->pass)
- {
- case 0:
- if (png_ptr->row_number & 0x07)
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- case 1:
- if ((png_ptr->row_number & 0x07) || png_ptr->width < 5)
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- case 2:
- if ((png_ptr->row_number & 0x07) != 4)
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- case 3:
- if ((png_ptr->row_number & 0x03) || png_ptr->width < 3)
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- case 4:
- if ((png_ptr->row_number & 0x03) != 2)
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- case 5:
- if ((png_ptr->row_number & 0x01) || png_ptr->width < 2)
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- case 6:
- if (!(png_ptr->row_number & 0x01))
- {
- png_write_finish_row(png_ptr);
- return;
- }
- break;
-
- default: /* error: ignore it */
- break;
- }
- }
-#endif
-
- /* Set up row info for transformations */
- row_info.color_type = png_ptr->color_type;
- row_info.width = png_ptr->usr_width;
- row_info.channels = png_ptr->usr_channels;
- row_info.bit_depth = png_ptr->usr_bit_depth;
- row_info.pixel_depth = (png_byte)(row_info.bit_depth * row_info.channels);
- row_info.rowbytes = PNG_ROWBYTES(row_info.pixel_depth, row_info.width);
-
- png_debug1(3, "row_info->color_type = %d", row_info.color_type);
- png_debug1(3, "row_info->width = %u", row_info.width);
- png_debug1(3, "row_info->channels = %d", row_info.channels);
- png_debug1(3, "row_info->bit_depth = %d", row_info.bit_depth);
- png_debug1(3, "row_info->pixel_depth = %d", row_info.pixel_depth);
- png_debug1(3, "row_info->rowbytes = %lu", (unsigned long)row_info.rowbytes);
-
- /* Copy user's row into buffer, leaving room for filter byte. */
- memcpy(png_ptr->row_buf + 1, row, row_info.rowbytes);
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* Handle interlacing */
- if (png_ptr->interlaced && png_ptr->pass < 6 &&
- (png_ptr->transformations & PNG_INTERLACE))
- {
- png_do_write_interlace(&row_info, png_ptr->row_buf + 1, png_ptr->pass);
- /* This should always get caught above, but still ... */
- if (!(row_info.width))
- {
- png_write_finish_row(png_ptr);
- return;
- }
- }
-#endif
-
-#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
- /* Handle other transformations */
- if (png_ptr->transformations)
- png_do_write_transformations(png_ptr, &row_info);
-#endif
-
- /* At this point the row_info pixel depth must match the 'transformed' depth,
- * which is also the output depth.
- */
- if (row_info.pixel_depth != png_ptr->pixel_depth ||
- row_info.pixel_depth != png_ptr->transformed_pixel_depth)
- png_error(png_ptr, "internal write transform logic error");
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- /* Write filter_method 64 (intrapixel differencing) only if
- * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
- * 2. Libpng did not write a PNG signature (this filter_method is only
- * used in PNG datastreams that are embedded in MNG datastreams) and
- * 3. The application called png_permit_mng_features with a mask that
- * included PNG_FLAG_MNG_FILTER_64 and
- * 4. The filter_method is 64 and
- * 5. The color_type is RGB or RGBA
- */
- if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (png_ptr->filter_type == PNG_INTRAPIXEL_DIFFERENCING))
- {
- /* Intrapixel differencing */
- png_do_write_intrapixel(&row_info, png_ptr->row_buf + 1);
- }
-#endif
-
-/* Added at libpng-1.5.10 */
-#ifdef PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
- /* Check for out-of-range palette index */
- if (row_info.color_type == PNG_COLOR_TYPE_PALETTE &&
- png_ptr->num_palette_max >= 0)
- png_do_check_palette_indexes(png_ptr, &row_info);
-#endif
-
- /* Find a filter if necessary, filter the row and write it out. */
- png_write_find_filter(png_ptr, &row_info);
-
- if (png_ptr->write_row_fn != NULL)
- (*(png_ptr->write_row_fn))(png_ptr, png_ptr->row_number, png_ptr->pass);
-}
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
-/* Set the automatic flush interval or 0 to turn flushing off */
-void PNGAPI
-png_set_flush(png_structrp png_ptr, int nrows)
-{
- png_debug(1, "in png_set_flush");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->flush_dist = (nrows < 0 ? 0 : nrows);
-}
-
-/* Flush the current output buffers now */
-void PNGAPI
-png_write_flush(png_structrp png_ptr)
-{
- png_debug(1, "in png_write_flush");
-
- if (png_ptr == NULL)
- return;
-
- /* We have already written out all of the data */
- if (png_ptr->row_number >= png_ptr->num_rows)
- return;
-
- png_compress_IDAT(png_ptr, NULL, 0, Z_SYNC_FLUSH);
- png_ptr->flush_rows = 0;
- png_flush(png_ptr);
-}
-#endif /* PNG_WRITE_FLUSH_SUPPORTED */
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
-static void png_reset_filter_heuristics(png_structrp png_ptr);/* forward decl */
-#endif
-
-/* Free any memory used in png_ptr struct without freeing the struct itself. */
-static void
-png_write_destroy(png_structrp png_ptr)
-{
- png_debug(1, "in png_write_destroy");
-
- /* Free any memory zlib uses */
- if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED)
- deflateEnd(&png_ptr->zstream);
-
- /* Free our memory. png_free checks NULL for us. */
- png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list);
- png_free(png_ptr, png_ptr->row_buf);
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- png_free(png_ptr, png_ptr->prev_row);
- png_free(png_ptr, png_ptr->sub_row);
- png_free(png_ptr, png_ptr->up_row);
- png_free(png_ptr, png_ptr->avg_row);
- png_free(png_ptr, png_ptr->paeth_row);
-#endif
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- /* Use this to save a little code space, it doesn't free the filter_costs */
- png_reset_filter_heuristics(png_ptr);
- png_free(png_ptr, png_ptr->filter_costs);
- png_free(png_ptr, png_ptr->inv_filter_costs);
-#endif
-
-#ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
- png_free(png_ptr, png_ptr->chunk_list);
-#endif
-
- /* The error handling and memory handling information is left intact at this
- * point: the jmp_buf may still have to be freed. See png_destroy_png_struct
- * for how this happens.
- */
-}
-
-/* Free all memory used by the write.
- * In libpng 1.6.0 this API changed quietly to no longer accept a NULL value for
- * *png_ptr_ptr. Prior to 1.6.0 it would accept such a value and it would free
- * the passed in info_structs but it would quietly fail to free any of the data
- * inside them. In 1.6.0 it quietly does nothing (it has to be quiet because it
- * has no png_ptr.)
- */
-void PNGAPI
-png_destroy_write_struct(png_structpp png_ptr_ptr, png_infopp info_ptr_ptr)
-{
- png_debug(1, "in png_destroy_write_struct");
-
- if (png_ptr_ptr != NULL)
- {
- png_structrp png_ptr = *png_ptr_ptr;
-
- if (png_ptr != NULL) /* added in libpng 1.6.0 */
- {
- png_destroy_info_struct(png_ptr, info_ptr_ptr);
-
- *png_ptr_ptr = NULL;
- png_write_destroy(png_ptr);
- png_destroy_png_struct(png_ptr);
- }
- }
-}
-
-/* Allow the application to select one or more row filters to use. */
-void PNGAPI
-png_set_filter(png_structrp png_ptr, int method, int filters)
-{
- png_debug(1, "in png_set_filter");
-
- if (png_ptr == NULL)
- return;
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- if ((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- (method == PNG_INTRAPIXEL_DIFFERENCING))
- method = PNG_FILTER_TYPE_BASE;
-
-#endif
- if (method == PNG_FILTER_TYPE_BASE)
- {
- switch (filters & (PNG_ALL_FILTERS | 0x07))
- {
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- case 5:
- case 6:
- case 7: png_app_error(png_ptr, "Unknown row filter for method 0");
- /* FALL THROUGH */
-#endif /* PNG_WRITE_FILTER_SUPPORTED */
- case PNG_FILTER_VALUE_NONE:
- png_ptr->do_filter = PNG_FILTER_NONE; break;
-
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- case PNG_FILTER_VALUE_SUB:
- png_ptr->do_filter = PNG_FILTER_SUB; break;
-
- case PNG_FILTER_VALUE_UP:
- png_ptr->do_filter = PNG_FILTER_UP; break;
-
- case PNG_FILTER_VALUE_AVG:
- png_ptr->do_filter = PNG_FILTER_AVG; break;
-
- case PNG_FILTER_VALUE_PAETH:
- png_ptr->do_filter = PNG_FILTER_PAETH; break;
-
- default:
- png_ptr->do_filter = (png_byte)filters; break;
-#else
- default:
- png_app_error(png_ptr, "Unknown row filter for method 0");
-#endif /* PNG_WRITE_FILTER_SUPPORTED */
- }
-
- /* If we have allocated the row_buf, this means we have already started
- * with the image and we should have allocated all of the filter buffers
- * that have been selected. If prev_row isn't already allocated, then
- * it is too late to start using the filters that need it, since we
- * will be missing the data in the previous row. If an application
- * wants to start and stop using particular filters during compression,
- * it should start out with all of the filters, and then add and
- * remove them after the start of compression.
- */
- if (png_ptr->row_buf != NULL)
- {
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- if ((png_ptr->do_filter & PNG_FILTER_SUB) && png_ptr->sub_row == NULL)
- {
- png_ptr->sub_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
- png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
- }
-
- if ((png_ptr->do_filter & PNG_FILTER_UP) && png_ptr->up_row == NULL)
- {
- if (png_ptr->prev_row == NULL)
- {
- png_warning(png_ptr, "Can't add Up filter after starting");
- png_ptr->do_filter = (png_byte)(png_ptr->do_filter &
- ~PNG_FILTER_UP);
- }
-
- else
- {
- png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
- png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
- }
- }
-
- if ((png_ptr->do_filter & PNG_FILTER_AVG) && png_ptr->avg_row == NULL)
- {
- if (png_ptr->prev_row == NULL)
- {
- png_warning(png_ptr, "Can't add Average filter after starting");
- png_ptr->do_filter = (png_byte)(png_ptr->do_filter &
- ~PNG_FILTER_AVG);
- }
-
- else
- {
- png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
- png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
- }
- }
-
- if ((png_ptr->do_filter & PNG_FILTER_PAETH) &&
- png_ptr->paeth_row == NULL)
- {
- if (png_ptr->prev_row == NULL)
- {
- png_warning(png_ptr, "Can't add Paeth filter after starting");
- png_ptr->do_filter &= (png_byte)(~PNG_FILTER_PAETH);
- }
-
- else
- {
- png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
- (png_ptr->rowbytes + 1));
- png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
- }
- }
-
- if (png_ptr->do_filter == PNG_NO_FILTERS)
-#endif /* PNG_WRITE_FILTER_SUPPORTED */
- png_ptr->do_filter = PNG_FILTER_NONE;
- }
- }
- else
- png_error(png_ptr, "Unknown custom filter method");
-}
-
-/* This allows us to influence the way in which libpng chooses the "best"
- * filter for the current scanline. While the "minimum-sum-of-absolute-
- * differences metric is relatively fast and effective, there is some
- * question as to whether it can be improved upon by trying to keep the
- * filtered data going to zlib more consistent, hopefully resulting in
- * better compression.
- */
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED /* GRR 970116 */
-/* Convenience reset API. */
-static void
-png_reset_filter_heuristics(png_structrp png_ptr)
-{
- /* Clear out any old values in the 'weights' - this must be done because if
- * the app calls set_filter_heuristics multiple times with different
- * 'num_weights' values we would otherwise potentially have wrong sized
- * arrays.
- */
- png_ptr->num_prev_filters = 0;
- png_ptr->heuristic_method = PNG_FILTER_HEURISTIC_UNWEIGHTED;
- if (png_ptr->prev_filters != NULL)
- {
- png_bytep old = png_ptr->prev_filters;
- png_ptr->prev_filters = NULL;
- png_free(png_ptr, old);
- }
- if (png_ptr->filter_weights != NULL)
- {
- png_uint_16p old = png_ptr->filter_weights;
- png_ptr->filter_weights = NULL;
- png_free(png_ptr, old);
- }
-
- if (png_ptr->inv_filter_weights != NULL)
- {
- png_uint_16p old = png_ptr->inv_filter_weights;
- png_ptr->inv_filter_weights = NULL;
- png_free(png_ptr, old);
- }
-
- /* Leave the filter_costs - this array is fixed size. */
-}
-
-static int
-png_init_filter_heuristics(png_structrp png_ptr, int heuristic_method,
- int num_weights)
-{
- if (png_ptr == NULL)
- return 0;
-
- /* Clear out the arrays */
- png_reset_filter_heuristics(png_ptr);
-
- /* Check arguments; the 'reset' function makes the correct settings for the
- * unweighted case, but we must handle the weight case by initializing the
- * arrays for the caller.
- */
- if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int i;
-
- if (num_weights > 0)
- {
- png_ptr->prev_filters = (png_bytep)png_malloc(png_ptr,
- (png_uint_32)((sizeof (png_byte)) * num_weights));
-
- /* To make sure that the weighting starts out fairly */
- for (i = 0; i < num_weights; i++)
- {
- png_ptr->prev_filters[i] = 255;
- }
-
- png_ptr->filter_weights = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)((sizeof (png_uint_16)) * num_weights));
-
- png_ptr->inv_filter_weights = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)((sizeof (png_uint_16)) * num_weights));
-
- for (i = 0; i < num_weights; i++)
- {
- png_ptr->inv_filter_weights[i] =
- png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
- }
-
- /* Safe to set this now */
- png_ptr->num_prev_filters = (png_byte)num_weights;
- }
-
- /* If, in the future, there are other filter methods, this would
- * need to be based on png_ptr->filter.
- */
- if (png_ptr->filter_costs == NULL)
- {
- png_ptr->filter_costs = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)((sizeof (png_uint_16)) * PNG_FILTER_VALUE_LAST));
-
- png_ptr->inv_filter_costs = (png_uint_16p)png_malloc(png_ptr,
- (png_uint_32)((sizeof (png_uint_16)) * PNG_FILTER_VALUE_LAST));
- }
-
- for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
- {
- png_ptr->inv_filter_costs[i] =
- png_ptr->filter_costs[i] = PNG_COST_FACTOR;
- }
-
- /* All the arrays are inited, safe to set this: */
- png_ptr->heuristic_method = PNG_FILTER_HEURISTIC_WEIGHTED;
-
- /* Return the 'ok' code. */
- return 1;
- }
- else if (heuristic_method == PNG_FILTER_HEURISTIC_DEFAULT ||
- heuristic_method == PNG_FILTER_HEURISTIC_UNWEIGHTED)
- {
- return 1;
- }
- else
- {
- png_warning(png_ptr, "Unknown filter heuristic method");
- return 0;
- }
-}
-
-/* Provide floating and fixed point APIs */
-#ifdef PNG_FLOATING_POINT_SUPPORTED
-void PNGAPI
-png_set_filter_heuristics(png_structrp png_ptr, int heuristic_method,
- int num_weights, png_const_doublep filter_weights,
- png_const_doublep filter_costs)
-{
- png_debug(1, "in png_set_filter_heuristics");
-
- /* The internal API allocates all the arrays and ensures that the elements of
- * those arrays are set to the default value.
- */
- if (!png_init_filter_heuristics(png_ptr, heuristic_method, num_weights))
- return;
-
- /* If using the weighted method copy in the weights. */
- if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int i;
- for (i = 0; i < num_weights; i++)
- {
- if (filter_weights[i] <= 0.0)
- {
- png_ptr->inv_filter_weights[i] =
- png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
- }
-
- else
- {
- png_ptr->inv_filter_weights[i] =
- (png_uint_16)(PNG_WEIGHT_FACTOR*filter_weights[i]+.5);
-
- png_ptr->filter_weights[i] =
- (png_uint_16)(PNG_WEIGHT_FACTOR/filter_weights[i]+.5);
- }
- }
-
- /* Here is where we set the relative costs of the different filters. We
- * should take the desired compression level into account when setting
- * the costs, so that Paeth, for instance, has a high relative cost at low
- * compression levels, while it has a lower relative cost at higher
- * compression settings. The filter types are in order of increasing
- * relative cost, so it would be possible to do this with an algorithm.
- */
- for (i = 0; i < PNG_FILTER_VALUE_LAST; i++) if (filter_costs[i] >= 1.0)
- {
- png_ptr->inv_filter_costs[i] =
- (png_uint_16)(PNG_COST_FACTOR / filter_costs[i] + .5);
-
- png_ptr->filter_costs[i] =
- (png_uint_16)(PNG_COST_FACTOR * filter_costs[i] + .5);
- }
- }
-}
-#endif /* FLOATING_POINT */
-
-#ifdef PNG_FIXED_POINT_SUPPORTED
-void PNGAPI
-png_set_filter_heuristics_fixed(png_structrp png_ptr, int heuristic_method,
- int num_weights, png_const_fixed_point_p filter_weights,
- png_const_fixed_point_p filter_costs)
-{
- png_debug(1, "in png_set_filter_heuristics_fixed");
-
- /* The internal API allocates all the arrays and ensures that the elements of
- * those arrays are set to the default value.
- */
- if (!png_init_filter_heuristics(png_ptr, heuristic_method, num_weights))
- return;
-
- /* If using the weighted method copy in the weights. */
- if (heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int i;
- for (i = 0; i < num_weights; i++)
- {
- if (filter_weights[i] <= 0)
- {
- png_ptr->inv_filter_weights[i] =
- png_ptr->filter_weights[i] = PNG_WEIGHT_FACTOR;
- }
-
- else
- {
- png_ptr->inv_filter_weights[i] = (png_uint_16)
- ((PNG_WEIGHT_FACTOR*filter_weights[i]+PNG_FP_HALF)/PNG_FP_1);
-
- png_ptr->filter_weights[i] = (png_uint_16)((PNG_WEIGHT_FACTOR*
- PNG_FP_1+(filter_weights[i]/2))/filter_weights[i]);
- }
- }
-
- /* Here is where we set the relative costs of the different filters. We
- * should take the desired compression level into account when setting
- * the costs, so that Paeth, for instance, has a high relative cost at low
- * compression levels, while it has a lower relative cost at higher
- * compression settings. The filter types are in order of increasing
- * relative cost, so it would be possible to do this with an algorithm.
- */
- for (i = 0; i < PNG_FILTER_VALUE_LAST; i++)
- if (filter_costs[i] >= PNG_FP_1)
- {
- png_uint_32 tmp;
-
- /* Use a 32 bit unsigned temporary here because otherwise the
- * intermediate value will be a 32 bit *signed* integer (ANSI rules)
- * and this will get the wrong answer on division.
- */
- tmp = PNG_COST_FACTOR*PNG_FP_1 + (filter_costs[i]/2);
- tmp /= filter_costs[i];
-
- png_ptr->inv_filter_costs[i] = (png_uint_16)tmp;
-
- tmp = PNG_COST_FACTOR * filter_costs[i] + PNG_FP_HALF;
- tmp /= PNG_FP_1;
-
- png_ptr->filter_costs[i] = (png_uint_16)tmp;
- }
- }
-}
-#endif /* FIXED_POINT */
-#endif /* PNG_WRITE_WEIGHTED_FILTER_SUPPORTED */
-
-void PNGAPI
-png_set_compression_level(png_structrp png_ptr, int level)
-{
- png_debug(1, "in png_set_compression_level");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->zlib_level = level;
-}
-
-void PNGAPI
-png_set_compression_mem_level(png_structrp png_ptr, int mem_level)
-{
- png_debug(1, "in png_set_compression_mem_level");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->zlib_mem_level = mem_level;
-}
-
-void PNGAPI
-png_set_compression_strategy(png_structrp png_ptr, int strategy)
-{
- png_debug(1, "in png_set_compression_strategy");
-
- if (png_ptr == NULL)
- return;
-
- /* The flag setting here prevents the libpng dynamic selection of strategy.
- */
- png_ptr->flags |= PNG_FLAG_ZLIB_CUSTOM_STRATEGY;
- png_ptr->zlib_strategy = strategy;
-}
-
-/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
- * smaller value of window_bits if it can do so safely.
- */
-void PNGAPI
-png_set_compression_window_bits(png_structrp png_ptr, int window_bits)
-{
- if (png_ptr == NULL)
- return;
-
- /* Prior to 1.6.0 this would warn but then set the window_bits value, this
- * meant that negative window bits values could be selected which would cause
- * libpng to write a non-standard PNG file with raw deflate or gzip
- * compressed IDAT or ancillary chunks. Such files can be read and there is
- * no warning on read, so this seems like a very bad idea.
- */
- if (window_bits > 15)
- {
- png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
- window_bits = 15;
- }
-
- else if (window_bits < 8)
- {
- png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
- window_bits = 8;
- }
-
- png_ptr->zlib_window_bits = window_bits;
-}
-
-void PNGAPI
-png_set_compression_method(png_structrp png_ptr, int method)
-{
- png_debug(1, "in png_set_compression_method");
-
- if (png_ptr == NULL)
- return;
-
- /* This would produce an invalid PNG file if it worked, but it doesn't and
- * deflate will fault it, so it is harmless to just warn here.
- */
- if (method != 8)
- png_warning(png_ptr, "Only compression method 8 is supported by PNG");
-
- png_ptr->zlib_method = method;
-}
-
-/* The following were added to libpng-1.5.4 */
-#ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
-void PNGAPI
-png_set_text_compression_level(png_structrp png_ptr, int level)
-{
- png_debug(1, "in png_set_text_compression_level");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->zlib_text_level = level;
-}
-
-void PNGAPI
-png_set_text_compression_mem_level(png_structrp png_ptr, int mem_level)
-{
- png_debug(1, "in png_set_text_compression_mem_level");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->zlib_text_mem_level = mem_level;
-}
-
-void PNGAPI
-png_set_text_compression_strategy(png_structrp png_ptr, int strategy)
-{
- png_debug(1, "in png_set_text_compression_strategy");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->zlib_text_strategy = strategy;
-}
-
-/* If PNG_WRITE_OPTIMIZE_CMF_SUPPORTED is defined, libpng will use a
- * smaller value of window_bits if it can do so safely.
- */
-void PNGAPI
-png_set_text_compression_window_bits(png_structrp png_ptr, int window_bits)
-{
- if (png_ptr == NULL)
- return;
-
- if (window_bits > 15)
- {
- png_warning(png_ptr, "Only compression windows <= 32k supported by PNG");
- window_bits = 15;
- }
-
- else if (window_bits < 8)
- {
- png_warning(png_ptr, "Only compression windows >= 256 supported by PNG");
- window_bits = 8;
- }
-
- png_ptr->zlib_text_window_bits = window_bits;
-}
-
-void PNGAPI
-png_set_text_compression_method(png_structrp png_ptr, int method)
-{
- png_debug(1, "in png_set_text_compression_method");
-
- if (png_ptr == NULL)
- return;
-
- if (method != 8)
- png_warning(png_ptr, "Only compression method 8 is supported by PNG");
-
- png_ptr->zlib_text_method = method;
-}
-#endif /* PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED */
-/* end of API added to libpng-1.5.4 */
-
-void PNGAPI
-png_set_write_status_fn(png_structrp png_ptr, png_write_status_ptr write_row_fn)
-{
- if (png_ptr == NULL)
- return;
-
- png_ptr->write_row_fn = write_row_fn;
-}
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
-void PNGAPI
-png_set_write_user_transform_fn(png_structrp png_ptr, png_user_transform_ptr
- write_user_transform_fn)
-{
- png_debug(1, "in png_set_write_user_transform_fn");
-
- if (png_ptr == NULL)
- return;
-
- png_ptr->transformations |= PNG_USER_TRANSFORM;
- png_ptr->write_user_transform_fn = write_user_transform_fn;
-}
-#endif
-
-
-#ifdef PNG_INFO_IMAGE_SUPPORTED
-void PNGAPI
-png_write_png(png_structrp png_ptr, png_inforp info_ptr,
- int transforms, voidp params)
-{
- if (png_ptr == NULL || info_ptr == NULL)
- return;
-
- /* Write the file header information. */
- png_write_info(png_ptr, info_ptr);
-
- /* ------ these transformations don't touch the info structure ------- */
-
-#ifdef PNG_WRITE_INVERT_SUPPORTED
- /* Invert monochrome pixels */
- if (transforms & PNG_TRANSFORM_INVERT_MONO)
- png_set_invert_mono(png_ptr);
-#endif
-
-#ifdef PNG_WRITE_SHIFT_SUPPORTED
- /* Shift the pixels up to a legal bit depth and fill in
- * as appropriate to correctly scale the image.
- */
- if ((transforms & PNG_TRANSFORM_SHIFT)
- && (info_ptr->valid & PNG_INFO_sBIT))
- png_set_shift(png_ptr, &info_ptr->sig_bit);
-#endif
-
-#ifdef PNG_WRITE_PACK_SUPPORTED
- /* Pack pixels into bytes */
- if (transforms & PNG_TRANSFORM_PACKING)
- png_set_packing(png_ptr);
-#endif
-
-#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
- /* Swap location of alpha bytes from ARGB to RGBA */
- if (transforms & PNG_TRANSFORM_SWAP_ALPHA)
- png_set_swap_alpha(png_ptr);
-#endif
-
-#ifdef PNG_WRITE_FILLER_SUPPORTED
- /* Pack XRGB/RGBX/ARGB/RGBA into RGB (4 channels -> 3 channels) */
- if (transforms & PNG_TRANSFORM_STRIP_FILLER_AFTER)
- png_set_filler(png_ptr, 0, PNG_FILLER_AFTER);
-
- else if (transforms & PNG_TRANSFORM_STRIP_FILLER_BEFORE)
- png_set_filler(png_ptr, 0, PNG_FILLER_BEFORE);
-#endif
-
-#ifdef PNG_WRITE_BGR_SUPPORTED
- /* Flip BGR pixels to RGB */
- if (transforms & PNG_TRANSFORM_BGR)
- png_set_bgr(png_ptr);
-#endif
-
-#ifdef PNG_WRITE_SWAP_SUPPORTED
- /* Swap bytes of 16-bit files to most significant byte first */
- if (transforms & PNG_TRANSFORM_SWAP_ENDIAN)
- png_set_swap(png_ptr);
-#endif
-
-#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
- /* Swap bits of 1, 2, 4 bit packed pixel formats */
- if (transforms & PNG_TRANSFORM_PACKSWAP)
- png_set_packswap(png_ptr);
-#endif
-
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
- /* Invert the alpha channel from opacity to transparency */
- if (transforms & PNG_TRANSFORM_INVERT_ALPHA)
- png_set_invert_alpha(png_ptr);
-#endif
-
- /* ----------------------- end of transformations ------------------- */
-
- /* Write the bits */
- if (info_ptr->valid & PNG_INFO_IDAT)
- png_write_image(png_ptr, info_ptr->row_pointers);
-
- /* It is REQUIRED to call this to finish writing the rest of the file */
- png_write_end(png_ptr, info_ptr);
-
- PNG_UNUSED(transforms) /* Quiet compiler warnings */
- PNG_UNUSED(params)
-}
-#endif
-
-
-#ifdef PNG_SIMPLIFIED_WRITE_SUPPORTED
-#ifdef PNG_STDIO_SUPPORTED /* currently required for png_image_write_* */
-/* Initialize the write structure - general purpose utility. */
-static int
-png_image_write_init(png_imagep image)
-{
- png_structp png_ptr = png_create_write_struct(PNG_LIBPNG_VER_STRING, image,
- png_safe_error, png_safe_warning);
-
- if (png_ptr != NULL)
- {
- png_infop info_ptr = png_create_info_struct(png_ptr);
-
- if (info_ptr != NULL)
- {
- png_controlp control = png_voidcast(png_controlp,
- png_malloc_warn(png_ptr, (sizeof *control)));
-
- if (control != NULL)
- {
- memset(control, 0, (sizeof *control));
-
- control->png_ptr = png_ptr;
- control->info_ptr = info_ptr;
- control->for_write = 1;
-
- image->opaque = control;
- return 1;
- }
-
- /* Error clean up */
- png_destroy_info_struct(png_ptr, &info_ptr);
- }
-
- png_destroy_write_struct(&png_ptr, NULL);
- }
-
- return png_image_error(image, "png_image_write_: out of memory");
-}
-
-/* Arguments to png_image_write_main: */
-typedef struct
-{
- /* Arguments: */
- png_imagep image;
- png_const_voidp buffer;
- png_int_32 row_stride;
- png_const_voidp colormap;
- int convert_to_8bit;
- /* Local variables: */
- png_const_voidp first_row;
- ptrdiff_t row_bytes;
- png_voidp local_row;
-} png_image_write_control;
-
-/* Write png_uint_16 input to a 16-bit PNG; the png_ptr has already been set to
- * do any necessary byte swapping. The component order is defined by the
- * png_image format value.
- */
-static int
-png_write_image_16bit(png_voidp argument)
-{
- png_image_write_control *display = png_voidcast(png_image_write_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
-
- png_const_uint_16p input_row = png_voidcast(png_const_uint_16p,
- display->first_row);
- png_uint_16p output_row = png_voidcast(png_uint_16p, display->local_row);
- png_uint_16p row_end;
- const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
- int aindex = 0;
- png_uint_32 y = image->height;
-
- if (image->format & PNG_FORMAT_FLAG_ALPHA)
- {
- if (image->format & PNG_FORMAT_FLAG_AFIRST)
- {
- aindex = -1;
- ++input_row; /* To point to the first component */
- ++output_row;
- }
-
- else
- aindex = channels;
- }
-
- else
- png_error(png_ptr, "png_write_image: internal call error");
-
- /* Work out the output row end and count over this, note that the increment
- * above to 'row' means that row_end can actually be beyond the end of the
- * row; this is correct.
- */
- row_end = output_row + image->width * (channels+1);
-
- while (y-- > 0)
- {
- png_const_uint_16p in_ptr = input_row;
- png_uint_16p out_ptr = output_row;
-
- while (out_ptr < row_end)
- {
- const png_uint_16 alpha = in_ptr[aindex];
- png_uint_32 reciprocal = 0;
- int c;
-
- out_ptr[aindex] = alpha;
-
- /* Calculate a reciprocal. The correct calculation is simply
- * component/alpha*65535 << 15. (I.e. 15 bits of precision); this
- * allows correct rounding by adding .5 before the shift. 'reciprocal'
- * is only initialized when required.
- */
- if (alpha > 0 && alpha < 65535)
- reciprocal = ((0xffff<<15)+(alpha>>1))/alpha;
-
- c = channels;
- do /* always at least one channel */
- {
- png_uint_16 component = *in_ptr++;
-
- /* The following gives 65535 for an alpha of 0, which is fine,
- * otherwise if 0/0 is represented as some other value there is more
- * likely to be a discontinuity which will probably damage
- * compression when moving from a fully transparent area to a
- * nearly transparent one. (The assumption here is that opaque
- * areas tend not to be 0 intensity.)
- */
- if (component >= alpha)
- component = 65535;
-
- /* component<alpha, so component/alpha is less than one and
- * component*reciprocal is less than 2^31.
- */
- else if (component > 0 && alpha < 65535)
- {
- png_uint_32 calc = component * reciprocal;
- calc += 16384; /* round to nearest */
- component = (png_uint_16)(calc >> 15);
- }
-
- *out_ptr++ = component;
- }
- while (--c > 0);
-
- /* Skip to next component (skip the intervening alpha channel) */
- ++in_ptr;
- ++out_ptr;
- }
-
- png_write_row(png_ptr, png_voidcast(png_const_bytep, display->local_row));
- input_row += display->row_bytes/(sizeof (png_uint_16));
- }
-
- return 1;
-}
-
-/* Given 16-bit input (1 to 4 channels) write 8-bit output. If an alpha channel
- * is present it must be removed from the components, the components are then
- * written in sRGB encoding. No components are added or removed.
- *
- * Calculate an alpha reciprocal to reverse pre-multiplication. As above the
- * calculation can be done to 15 bits of accuracy; however, the output needs to
- * be scaled in the range 0..255*65535, so include that scaling here.
- */
-#define UNP_RECIPROCAL(alpha) ((((0xffff*0xff)<<7)+(alpha>>1))/alpha)
-
-static png_byte
-png_unpremultiply(png_uint_32 component, png_uint_32 alpha,
- png_uint_32 reciprocal/*from the above macro*/)
-{
- /* The following gives 1.0 for an alpha of 0, which is fine, otherwise if 0/0
- * is represented as some other value there is more likely to be a
- * discontinuity which will probably damage compression when moving from a
- * fully transparent area to a nearly transparent one. (The assumption here
- * is that opaque areas tend not to be 0 intensity.)
- *
- * There is a rounding problem here; if alpha is less than 128 it will end up
- * as 0 when scaled to 8 bits. To avoid introducing spurious colors into the
- * output change for this too.
- */
- if (component >= alpha || alpha < 128)
- return 255;
-
- /* component<alpha, so component/alpha is less than one and
- * component*reciprocal is less than 2^31.
- */
- else if (component > 0)
- {
- /* The test is that alpha/257 (rounded) is less than 255, the first value
- * that becomes 255 is 65407.
- * NOTE: this must agree with the PNG_DIV257 macro (which must, therefore,
- * be exact!) [Could also test reciprocal != 0]
- */
- if (alpha < 65407)
- {
- component *= reciprocal;
- component += 64; /* round to nearest */
- component >>= 7;
- }
-
- else
- component *= 255;
-
- /* Convert the component to sRGB. */
- return (png_byte)PNG_sRGB_FROM_LINEAR(component);
- }
-
- else
- return 0;
-}
-
-static int
-png_write_image_8bit(png_voidp argument)
-{
- png_image_write_control *display = png_voidcast(png_image_write_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
-
- png_const_uint_16p input_row = png_voidcast(png_const_uint_16p,
- display->first_row);
- png_bytep output_row = png_voidcast(png_bytep, display->local_row);
- png_uint_32 y = image->height;
- const int channels = (image->format & PNG_FORMAT_FLAG_COLOR) ? 3 : 1;
-
- if (image->format & PNG_FORMAT_FLAG_ALPHA)
- {
- png_bytep row_end;
- int aindex;
-
- if (image->format & PNG_FORMAT_FLAG_AFIRST)
- {
- aindex = -1;
- ++input_row; /* To point to the first component */
- ++output_row;
- }
-
- else
- aindex = channels;
-
- /* Use row_end in place of a loop counter: */
- row_end = output_row + image->width * (channels+1);
-
- while (y-- > 0)
- {
- png_const_uint_16p in_ptr = input_row;
- png_bytep out_ptr = output_row;
-
- while (out_ptr < row_end)
- {
- png_uint_16 alpha = in_ptr[aindex];
- png_byte alphabyte = (png_byte)PNG_DIV257(alpha);
- png_uint_32 reciprocal = 0;
- int c;
-
- /* Scale and write the alpha channel. */
- out_ptr[aindex] = alphabyte;
-
- if (alphabyte > 0 && alphabyte < 255)
- reciprocal = UNP_RECIPROCAL(alpha);
-
- c = channels;
- do /* always at least one channel */
- *out_ptr++ = png_unpremultiply(*in_ptr++, alpha, reciprocal);
- while (--c > 0);
-
- /* Skip to next component (skip the intervening alpha channel) */
- ++in_ptr;
- ++out_ptr;
- } /* while out_ptr < row_end */
-
- png_write_row(png_ptr, png_voidcast(png_const_bytep,
- display->local_row));
- input_row += display->row_bytes/(sizeof (png_uint_16));
- } /* while y */
- }
-
- else
- {
- /* No alpha channel, so the row_end really is the end of the row and it
- * is sufficient to loop over the components one by one.
- */
- png_bytep row_end = output_row + image->width * channels;
-
- while (y-- > 0)
- {
- png_const_uint_16p in_ptr = input_row;
- png_bytep out_ptr = output_row;
-
- while (out_ptr < row_end)
- {
- png_uint_32 component = *in_ptr++;
-
- component *= 255;
- *out_ptr++ = (png_byte)PNG_sRGB_FROM_LINEAR(component);
- }
-
- png_write_row(png_ptr, output_row);
- input_row += display->row_bytes/(sizeof (png_uint_16));
- }
- }
-
- return 1;
-}
-
-static void
-png_image_set_PLTE(png_image_write_control *display)
-{
- const png_imagep image = display->image;
- const void *cmap = display->colormap;
- const int entries = image->colormap_entries > 256 ? 256 :
- (int)image->colormap_entries;
-
- /* NOTE: the caller must check for cmap != NULL and entries != 0 */
- const png_uint_32 format = image->format;
- const int channels = PNG_IMAGE_SAMPLE_CHANNELS(format);
-
-# ifdef PNG_FORMAT_BGR_SUPPORTED
- const int afirst = (format & PNG_FORMAT_FLAG_AFIRST) != 0 &&
- (format & PNG_FORMAT_FLAG_ALPHA) != 0;
-# else
-# define afirst 0
-# endif
-
-# ifdef PNG_FORMAT_BGR_SUPPORTED
- const int bgr = (format & PNG_FORMAT_FLAG_BGR) ? 2 : 0;
-# else
-# define bgr 0
-# endif
-
- int i, num_trans;
- png_color palette[256];
- png_byte tRNS[256];
-
- memset(tRNS, 255, (sizeof tRNS));
- memset(palette, 0, (sizeof palette));
-
- for (i=num_trans=0; i<entries; ++i)
- {
- /* This gets automatically converted to sRGB with reversal of the
- * pre-multiplication if the color-map has an alpha channel.
- */
- if (format & PNG_FORMAT_FLAG_LINEAR)
- {
- png_const_uint_16p entry = png_voidcast(png_const_uint_16p, cmap);
-
- entry += i * channels;
-
- if (channels & 1) /* no alpha */
- {
- if (channels >= 3) /* RGB */
- {
- palette[i].blue = (png_byte)PNG_sRGB_FROM_LINEAR(255 *
- entry[(2 ^ bgr)]);
- palette[i].green = (png_byte)PNG_sRGB_FROM_LINEAR(255 *
- entry[1]);
- palette[i].red = (png_byte)PNG_sRGB_FROM_LINEAR(255 *
- entry[bgr]);
- }
-
- else /* Gray */
- palette[i].blue = palette[i].red = palette[i].green =
- (png_byte)PNG_sRGB_FROM_LINEAR(255 * *entry);
- }
-
- else /* alpha */
- {
- png_uint_16 alpha = entry[afirst ? 0 : channels-1];
- png_byte alphabyte = (png_byte)PNG_DIV257(alpha);
- png_uint_32 reciprocal = 0;
-
- /* Calculate a reciprocal, as in the png_write_image_8bit code above
- * this is designed to produce a value scaled to 255*65535 when
- * divided by 128 (i.e. asr 7).
- */
- if (alphabyte > 0 && alphabyte < 255)
- reciprocal = (((0xffff*0xff)<<7)+(alpha>>1))/alpha;
-
- tRNS[i] = alphabyte;
- if (alphabyte < 255)
- num_trans = i+1;
-
- if (channels >= 3) /* RGB */
- {
- palette[i].blue = png_unpremultiply(entry[afirst + (2 ^ bgr)],
- alpha, reciprocal);
- palette[i].green = png_unpremultiply(entry[afirst + 1], alpha,
- reciprocal);
- palette[i].red = png_unpremultiply(entry[afirst + bgr], alpha,
- reciprocal);
- }
-
- else /* gray */
- palette[i].blue = palette[i].red = palette[i].green =
- png_unpremultiply(entry[afirst], alpha, reciprocal);
- }
- }
-
- else /* Color-map has sRGB values */
- {
- png_const_bytep entry = png_voidcast(png_const_bytep, cmap);
-
- entry += i * channels;
-
- switch (channels)
- {
- case 4:
- tRNS[i] = entry[afirst ? 0 : 3];
- if (tRNS[i] < 255)
- num_trans = i+1;
- /* FALL THROUGH */
- case 3:
- palette[i].blue = entry[afirst + (2 ^ bgr)];
- palette[i].green = entry[afirst + 1];
- palette[i].red = entry[afirst + bgr];
- break;
-
- case 2:
- tRNS[i] = entry[1 ^ afirst];
- if (tRNS[i] < 255)
- num_trans = i+1;
- /* FALL THROUGH */
- case 1:
- palette[i].blue = palette[i].red = palette[i].green =
- entry[afirst];
- break;
-
- default:
- break;
- }
- }
- }
-
-# ifdef afirst
-# undef afirst
-# endif
-# ifdef bgr
-# undef bgr
-# endif
-
- png_set_PLTE(image->opaque->png_ptr, image->opaque->info_ptr, palette,
- entries);
-
- if (num_trans > 0)
- png_set_tRNS(image->opaque->png_ptr, image->opaque->info_ptr, tRNS,
- num_trans, NULL);
-
- image->colormap_entries = entries;
-}
-
-static int
-png_image_write_main(png_voidp argument)
-{
- png_image_write_control *display = png_voidcast(png_image_write_control*,
- argument);
- png_imagep image = display->image;
- png_structrp png_ptr = image->opaque->png_ptr;
- png_inforp info_ptr = image->opaque->info_ptr;
- png_uint_32 format = image->format;
-
- int colormap = (format & PNG_FORMAT_FLAG_COLORMAP) != 0;
- int linear = !colormap && (format & PNG_FORMAT_FLAG_LINEAR) != 0; /* input */
- int alpha = !colormap && (format & PNG_FORMAT_FLAG_ALPHA) != 0;
- int write_16bit = linear && !colormap && !display->convert_to_8bit;
-
-# ifdef PNG_BENIGN_ERRORS_SUPPORTED
- /* Make sure we error out on any bad situation */
- png_set_benign_errors(png_ptr, 0/*error*/);
-# endif
-
- /* Default the 'row_stride' parameter if required. */
- if (display->row_stride == 0)
- display->row_stride = PNG_IMAGE_ROW_STRIDE(*image);
-
- /* Set the required transforms then write the rows in the correct order. */
- if (format & PNG_FORMAT_FLAG_COLORMAP)
- {
- if (display->colormap != NULL && image->colormap_entries > 0)
- {
- png_uint_32 entries = image->colormap_entries;
-
- png_set_IHDR(png_ptr, info_ptr, image->width, image->height,
- entries > 16 ? 8 : (entries > 4 ? 4 : (entries > 2 ? 2 : 1)),
- PNG_COLOR_TYPE_PALETTE, PNG_INTERLACE_NONE,
- PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
-
- png_image_set_PLTE(display);
- }
-
- else
- png_error(image->opaque->png_ptr,
- "no color-map for color-mapped image");
- }
-
- else
- png_set_IHDR(png_ptr, info_ptr, image->width, image->height,
- write_16bit ? 16 : 8,
- ((format & PNG_FORMAT_FLAG_COLOR) ? PNG_COLOR_MASK_COLOR : 0) +
- ((format & PNG_FORMAT_FLAG_ALPHA) ? PNG_COLOR_MASK_ALPHA : 0),
- PNG_INTERLACE_NONE, PNG_COMPRESSION_TYPE_BASE, PNG_FILTER_TYPE_BASE);
-
- /* Counter-intuitively the data transformations must be called *after*
- * png_write_info, not before as in the read code, but the 'set' functions
- * must still be called before. Just set the color space information, never
- * write an interlaced image.
- */
-
- if (write_16bit)
- {
- /* The gamma here is 1.0 (linear) and the cHRM chunk matches sRGB. */
- png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_LINEAR);
-
- if (!(image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB))
- png_set_cHRM_fixed(png_ptr, info_ptr,
- /* color x y */
- /* white */ 31270, 32900,
- /* red */ 64000, 33000,
- /* green */ 30000, 60000,
- /* blue */ 15000, 6000
- );
- }
-
- else if (!(image->flags & PNG_IMAGE_FLAG_COLORSPACE_NOT_sRGB))
- png_set_sRGB(png_ptr, info_ptr, PNG_sRGB_INTENT_PERCEPTUAL);
-
- /* Else writing an 8-bit file and the *colors* aren't sRGB, but the 8-bit
- * space must still be gamma encoded.
- */
- else
- png_set_gAMA_fixed(png_ptr, info_ptr, PNG_GAMMA_sRGB_INVERSE);
-
- /* Write the file header. */
- png_write_info(png_ptr, info_ptr);
-
- /* Now set up the data transformations (*after* the header is written),
- * remove the handled transformations from the 'format' flags for checking.
- *
- * First check for a little endian system if writing 16 bit files.
- */
- if (write_16bit)
- {
- PNG_CONST png_uint_16 le = 0x0001;
-
- if (*(png_const_bytep)&le)
- png_set_swap(png_ptr);
- }
-
-# ifdef PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
- if (format & PNG_FORMAT_FLAG_BGR)
- {
- if (!colormap && (format & PNG_FORMAT_FLAG_COLOR) != 0)
- png_set_bgr(png_ptr);
- format &= ~PNG_FORMAT_FLAG_BGR;
- }
-# endif
-
-# ifdef PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
- if (format & PNG_FORMAT_FLAG_AFIRST)
- {
- if (!colormap && (format & PNG_FORMAT_FLAG_ALPHA) != 0)
- png_set_swap_alpha(png_ptr);
- format &= ~PNG_FORMAT_FLAG_AFIRST;
- }
-# endif
-
- /* If there are 16 or fewer color-map entries we wrote a lower bit depth
- * above, but the application data is still byte packed.
- */
- if (colormap && image->colormap_entries <= 16)
- png_set_packing(png_ptr);
-
- /* That should have handled all (both) the transforms. */
- if ((format & ~(png_uint_32)(PNG_FORMAT_FLAG_COLOR | PNG_FORMAT_FLAG_LINEAR |
- PNG_FORMAT_FLAG_ALPHA | PNG_FORMAT_FLAG_COLORMAP)) != 0)
- png_error(png_ptr, "png_write_image: unsupported transformation");
-
- {
- png_const_bytep row = png_voidcast(png_const_bytep, display->buffer);
- ptrdiff_t row_bytes = display->row_stride;
-
- if (linear)
- row_bytes *= (sizeof (png_uint_16));
-
- if (row_bytes < 0)
- row += (image->height-1) * (-row_bytes);
-
- display->first_row = row;
- display->row_bytes = row_bytes;
- }
-
- /* Apply 'fast' options if the flag is set. */
- if ((image->flags & PNG_IMAGE_FLAG_FAST) != 0)
- {
- png_set_filter(png_ptr, PNG_FILTER_TYPE_BASE, PNG_NO_FILTERS);
- /* NOTE: determined by experiment using pngstest, this reflects some
- * balance between the time to write the image once and the time to read
- * it about 50 times. The speed-up in pngstest was about 10-20% of the
- * total (user) time on a heavily loaded system.
- */
- png_set_compression_level(png_ptr, 3);
- }
-
- /* Check for the cases that currently require a pre-transform on the row
- * before it is written. This only applies when the input is 16-bit and
- * either there is an alpha channel or it is converted to 8-bit.
- */
- if ((linear && alpha) || (!colormap && display->convert_to_8bit))
- {
- png_bytep row = png_voidcast(png_bytep, png_malloc(png_ptr,
- png_get_rowbytes(png_ptr, info_ptr)));
- int result;
-
- display->local_row = row;
- if (write_16bit)
- result = png_safe_execute(image, png_write_image_16bit, display);
- else
- result = png_safe_execute(image, png_write_image_8bit, display);
- display->local_row = NULL;
-
- png_free(png_ptr, row);
-
- /* Skip the 'write_end' on error: */
- if (!result)
- return 0;
- }
-
- /* Otherwise this is the case where the input is in a format currently
- * supported by the rest of the libpng write code; call it directly.
- */
- else
- {
- png_const_bytep row = png_voidcast(png_const_bytep, display->first_row);
- ptrdiff_t row_bytes = display->row_bytes;
- png_uint_32 y = image->height;
-
- while (y-- > 0)
- {
- png_write_row(png_ptr, row);
- row += row_bytes;
- }
- }
-
- png_write_end(png_ptr, info_ptr);
- return 1;
-}
-
-int PNGAPI
-png_image_write_to_stdio(png_imagep image, FILE *file, int convert_to_8bit,
- const void *buffer, png_int_32 row_stride, const void *colormap)
-{
- /* Write the image to the given (FILE*). */
- if (image != NULL && image->version == PNG_IMAGE_VERSION)
- {
- if (file != NULL)
- {
- if (png_image_write_init(image))
- {
- png_image_write_control display;
- int result;
-
- /* This is slightly evil, but png_init_io doesn't do anything other
- * than this and we haven't changed the standard IO functions so
- * this saves a 'safe' function.
- */
- image->opaque->png_ptr->io_ptr = file;
-
- memset(&display, 0, (sizeof display));
- display.image = image;
- display.buffer = buffer;
- display.row_stride = row_stride;
- display.colormap = colormap;
- display.convert_to_8bit = convert_to_8bit;
-
- result = png_safe_execute(image, png_image_write_main, &display);
- png_image_free(image);
- return result;
- }
-
- else
- return 0;
- }
-
- else
- return png_image_error(image,
- "png_image_write_to_stdio: invalid argument");
- }
-
- else if (image != NULL)
- return png_image_error(image,
- "png_image_write_to_stdio: incorrect PNG_IMAGE_VERSION");
-
- else
- return 0;
-}
-
-int PNGAPI
-png_image_write_to_file(png_imagep image, const char *file_name,
- int convert_to_8bit, const void *buffer, png_int_32 row_stride,
- const void *colormap)
-{
- /* Write the image to the named file. */
- if (image != NULL && image->version == PNG_IMAGE_VERSION)
- {
- if (file_name != NULL)
- {
- FILE *fp = fopen(file_name, "wb");
-
- if (fp != NULL)
- {
- if (png_image_write_to_stdio(image, fp, convert_to_8bit, buffer,
- row_stride, colormap))
- {
- int error; /* from fflush/fclose */
-
- /* Make sure the file is flushed correctly. */
- if (fflush(fp) == 0 && ferror(fp) == 0)
- {
- if (fclose(fp) == 0)
- return 1;
-
- error = errno; /* from fclose */
- }
-
- else
- {
- error = errno; /* from fflush or ferror */
- (void)fclose(fp);
- }
-
- (void)remove(file_name);
- /* The image has already been cleaned up; this is just used to
- * set the error (because the original write succeeded).
- */
- return png_image_error(image, strerror(error));
- }
-
- else
- {
- /* Clean up: just the opened file. */
- (void)fclose(fp);
- (void)remove(file_name);
- return 0;
- }
- }
-
- else
- return png_image_error(image, strerror(errno));
- }
-
- else
- return png_image_error(image,
- "png_image_write_to_file: invalid argument");
- }
-
- else if (image != NULL)
- return png_image_error(image,
- "png_image_write_to_file: incorrect PNG_IMAGE_VERSION");
-
- else
- return 0;
-}
-#endif /* PNG_STDIO_SUPPORTED */
-#endif /* SIMPLIFIED_WRITE */
-#endif /* PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pngwtran.c - transforms the data in a row for PNG writers
- *
- * Last changed in libpng 1.6.0 [February 14, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_WRITE_SUPPORTED
-
-#ifdef PNG_WRITE_TRANSFORMS_SUPPORTED
-/* Transform the data according to the user's wishes. The order of
- * transformations is significant.
- */
-void /* PRIVATE */
-png_do_write_transformations(png_structrp png_ptr, png_row_infop row_info)
-{
- png_debug(1, "in png_do_write_transformations");
-
- if (png_ptr == NULL)
- return;
-
-#ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
- if (png_ptr->transformations & PNG_USER_TRANSFORM)
- if (png_ptr->write_user_transform_fn != NULL)
- (*(png_ptr->write_user_transform_fn)) /* User write transform
- function */
- (png_ptr, /* png_ptr */
- row_info, /* row_info: */
- /* png_uint_32 width; width of row */
- /* png_size_t rowbytes; number of bytes in row */
- /* png_byte color_type; color type of pixels */
- /* png_byte bit_depth; bit depth of samples */
- /* png_byte channels; number of channels (1-4) */
- /* png_byte pixel_depth; bits per pixel (depth*channels) */
- png_ptr->row_buf + 1); /* start of pixel data for row */
-#endif
-
-#ifdef PNG_WRITE_FILLER_SUPPORTED
- if (png_ptr->transformations & PNG_FILLER)
- png_do_strip_channel(row_info, png_ptr->row_buf + 1,
- !(png_ptr->flags & PNG_FLAG_FILLER_AFTER));
-#endif
-
-#ifdef PNG_WRITE_PACKSWAP_SUPPORTED
- if (png_ptr->transformations & PNG_PACKSWAP)
- png_do_packswap(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_WRITE_PACK_SUPPORTED
- if (png_ptr->transformations & PNG_PACK)
- png_do_pack(row_info, png_ptr->row_buf + 1,
- (png_uint_32)png_ptr->bit_depth);
-#endif
-
-#ifdef PNG_WRITE_SWAP_SUPPORTED
- if (png_ptr->transformations & PNG_SWAP_BYTES)
- png_do_swap(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_WRITE_SHIFT_SUPPORTED
- if (png_ptr->transformations & PNG_SHIFT)
- png_do_shift(row_info, png_ptr->row_buf + 1,
- &(png_ptr->shift));
-#endif
-
-#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_SWAP_ALPHA)
- png_do_write_swap_alpha(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
- if (png_ptr->transformations & PNG_INVERT_ALPHA)
- png_do_write_invert_alpha(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_WRITE_BGR_SUPPORTED
- if (png_ptr->transformations & PNG_BGR)
- png_do_bgr(row_info, png_ptr->row_buf + 1);
-#endif
-
-#ifdef PNG_WRITE_INVERT_SUPPORTED
- if (png_ptr->transformations & PNG_INVERT_MONO)
- png_do_invert(row_info, png_ptr->row_buf + 1);
-#endif
-}
-
-#ifdef PNG_WRITE_PACK_SUPPORTED
-/* Pack pixels into bytes. Pass the true bit depth in bit_depth. The
- * row_info bit depth should be 8 (one pixel per byte). The channels
- * should be 1 (this only happens on grayscale and paletted images).
- */
-void /* PRIVATE */
-png_do_pack(png_row_infop row_info, png_bytep row, png_uint_32 bit_depth)
-{
- png_debug(1, "in png_do_pack");
-
- if (row_info->bit_depth == 8 &&
- row_info->channels == 1)
- {
- switch ((int)bit_depth)
- {
- case 1:
- {
- png_bytep sp, dp;
- int mask, v;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- sp = row;
- dp = row;
- mask = 0x80;
- v = 0;
-
- for (i = 0; i < row_width; i++)
- {
- if (*sp != 0)
- v |= mask;
-
- sp++;
-
- if (mask > 1)
- mask >>= 1;
-
- else
- {
- mask = 0x80;
- *dp = (png_byte)v;
- dp++;
- v = 0;
- }
- }
-
- if (mask != 0x80)
- *dp = (png_byte)v;
-
- break;
- }
-
- case 2:
- {
- png_bytep sp, dp;
- int shift, v;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- sp = row;
- dp = row;
- shift = 6;
- v = 0;
-
- for (i = 0; i < row_width; i++)
- {
- png_byte value;
-
- value = (png_byte)(*sp & 0x03);
- v |= (value << shift);
-
- if (shift == 0)
- {
- shift = 6;
- *dp = (png_byte)v;
- dp++;
- v = 0;
- }
-
- else
- shift -= 2;
-
- sp++;
- }
-
- if (shift != 6)
- *dp = (png_byte)v;
-
- break;
- }
-
- case 4:
- {
- png_bytep sp, dp;
- int shift, v;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- sp = row;
- dp = row;
- shift = 4;
- v = 0;
-
- for (i = 0; i < row_width; i++)
- {
- png_byte value;
-
- value = (png_byte)(*sp & 0x0f);
- v |= (value << shift);
-
- if (shift == 0)
- {
- shift = 4;
- *dp = (png_byte)v;
- dp++;
- v = 0;
- }
-
- else
- shift -= 4;
-
- sp++;
- }
-
- if (shift != 4)
- *dp = (png_byte)v;
-
- break;
- }
-
- default:
- break;
- }
-
- row_info->bit_depth = (png_byte)bit_depth;
- row_info->pixel_depth = (png_byte)(bit_depth * row_info->channels);
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
- row_info->width);
- }
-}
-#endif
-
-#ifdef PNG_WRITE_SHIFT_SUPPORTED
-/* Shift pixel values to take advantage of whole range. Pass the
- * true number of bits in bit_depth. The row should be packed
- * according to row_info->bit_depth. Thus, if you had a row of
- * bit depth 4, but the pixels only had values from 0 to 7, you
- * would pass 3 as bit_depth, and this routine would translate the
- * data to 0 to 15.
- */
-void /* PRIVATE */
-png_do_shift(png_row_infop row_info, png_bytep row,
- png_const_color_8p bit_depth)
-{
- png_debug(1, "in png_do_shift");
-
- if (row_info->color_type != PNG_COLOR_TYPE_PALETTE)
- {
- int shift_start[4], shift_dec[4];
- int channels = 0;
-
- if (row_info->color_type & PNG_COLOR_MASK_COLOR)
- {
- shift_start[channels] = row_info->bit_depth - bit_depth->red;
- shift_dec[channels] = bit_depth->red;
- channels++;
-
- shift_start[channels] = row_info->bit_depth - bit_depth->green;
- shift_dec[channels] = bit_depth->green;
- channels++;
-
- shift_start[channels] = row_info->bit_depth - bit_depth->blue;
- shift_dec[channels] = bit_depth->blue;
- channels++;
- }
-
- else
- {
- shift_start[channels] = row_info->bit_depth - bit_depth->gray;
- shift_dec[channels] = bit_depth->gray;
- channels++;
- }
-
- if (row_info->color_type & PNG_COLOR_MASK_ALPHA)
- {
- shift_start[channels] = row_info->bit_depth - bit_depth->alpha;
- shift_dec[channels] = bit_depth->alpha;
- channels++;
- }
-
- /* With low row depths, could only be grayscale, so one channel */
- if (row_info->bit_depth < 8)
- {
- png_bytep bp = row;
- png_size_t i;
- unsigned int mask;
- png_size_t row_bytes = row_info->rowbytes;
-
- if (bit_depth->gray == 1 && row_info->bit_depth == 2)
- mask = 0x55;
-
- else if (row_info->bit_depth == 4 && bit_depth->gray == 3)
- mask = 0x11;
-
- else
- mask = 0xff;
-
- for (i = 0; i < row_bytes; i++, bp++)
- {
- int j;
- unsigned int v, out;
-
- v = *bp;
- out = 0;
-
- for (j = shift_start[0]; j > -shift_dec[0]; j -= shift_dec[0])
- {
- if (j > 0)
- out |= v << j;
-
- else
- out |= (v >> (-j)) & mask;
- }
-
- *bp = (png_byte)(out & 0xff);
- }
- }
-
- else if (row_info->bit_depth == 8)
- {
- png_bytep bp = row;
- png_uint_32 i;
- png_uint_32 istop = channels * row_info->width;
-
- for (i = 0; i < istop; i++, bp++)
- {
-
- const unsigned int c = i%channels;
- int j;
- unsigned int v, out;
-
- v = *bp;
- out = 0;
-
- for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
- {
- if (j > 0)
- out |= v << j;
-
- else
- out |= v >> (-j);
- }
-
- *bp = (png_byte)(out & 0xff);
- }
- }
-
- else
- {
- png_bytep bp;
- png_uint_32 i;
- png_uint_32 istop = channels * row_info->width;
-
- for (bp = row, i = 0; i < istop; i++)
- {
- const unsigned int c = i%channels;
- int j;
- unsigned int value, v;
-
- v = png_get_uint_16(bp);
- value = 0;
-
- for (j = shift_start[c]; j > -shift_dec[c]; j -= shift_dec[c])
- {
- if (j > 0)
- value |= v << j;
-
- else
- value |= v >> (-j);
- }
- *bp++ = (png_byte)((value >> 8) & 0xff);
- *bp++ = (png_byte)(value & 0xff);
- }
- }
- }
-}
-#endif
-
-#ifdef PNG_WRITE_SWAP_ALPHA_SUPPORTED
-void /* PRIVATE */
-png_do_write_swap_alpha(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_write_swap_alpha");
-
- {
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This converts from ARGB to RGBA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- png_byte save = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = save;
- }
- }
-
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- else
- {
- /* This converts from AARRGGBB to RRGGBBAA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- png_byte save[2];
- save[0] = *(sp++);
- save[1] = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = save[0];
- *(dp++) = save[1];
- }
- }
-#endif /* PNG_WRITE_16BIT_SUPPORTED */
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This converts from AG to GA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- png_byte save = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = save;
- }
- }
-
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- else
- {
- /* This converts from AAGG to GGAA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- png_byte save[2];
- save[0] = *(sp++);
- save[1] = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = save[0];
- *(dp++) = save[1];
- }
- }
-#endif /* PNG_WRITE_16BIT_SUPPORTED */
- }
- }
-}
-#endif
-
-#ifdef PNG_WRITE_INVERT_ALPHA_SUPPORTED
-void /* PRIVATE */
-png_do_write_invert_alpha(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_write_invert_alpha");
-
- {
- if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This inverts the alpha channel in RGBA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- /* Does nothing
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- */
- sp+=3; dp = sp;
- *(dp++) = (png_byte)(255 - *(sp++));
- }
- }
-
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- else
- {
- /* This inverts the alpha channel in RRGGBBAA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- /* Does nothing
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- */
- sp+=6; dp = sp;
- *(dp++) = (png_byte)(255 - *(sp++));
- *(dp++) = (png_byte)(255 - *(sp++));
- }
- }
-#endif /* PNG_WRITE_16BIT_SUPPORTED */
- }
-
- else if (row_info->color_type == PNG_COLOR_TYPE_GRAY_ALPHA)
- {
- if (row_info->bit_depth == 8)
- {
- /* This inverts the alpha channel in GA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- *(dp++) = *(sp++);
- *(dp++) = (png_byte)(255 - *(sp++));
- }
- }
-
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- else
- {
- /* This inverts the alpha channel in GGAA */
- png_bytep sp, dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- for (i = 0, sp = dp = row; i < row_width; i++)
- {
- /* Does nothing
- *(dp++) = *(sp++);
- *(dp++) = *(sp++);
- */
- sp+=2; dp = sp;
- *(dp++) = (png_byte)(255 - *(sp++));
- *(dp++) = (png_byte)(255 - *(sp++));
- }
- }
-#endif /* PNG_WRITE_16BIT_SUPPORTED */
- }
- }
-}
-#endif
-#endif /* PNG_WRITE_TRANSFORMS_SUPPORTED */
-
-#ifdef PNG_MNG_FEATURES_SUPPORTED
-/* Undoes intrapixel differencing */
-void /* PRIVATE */
-png_do_write_intrapixel(png_row_infop row_info, png_bytep row)
-{
- png_debug(1, "in png_do_write_intrapixel");
-
- if ((row_info->color_type & PNG_COLOR_MASK_COLOR))
- {
- int bytes_per_pixel;
- png_uint_32 row_width = row_info->width;
- if (row_info->bit_depth == 8)
- {
- png_bytep rp;
- png_uint_32 i;
-
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- bytes_per_pixel = 3;
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- bytes_per_pixel = 4;
-
- else
- return;
-
- for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
- {
- *(rp) = (png_byte)((*rp - *(rp + 1)) & 0xff);
- *(rp + 2) = (png_byte)((*(rp + 2) - *(rp + 1)) & 0xff);
- }
- }
-
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- else if (row_info->bit_depth == 16)
- {
- png_bytep rp;
- png_uint_32 i;
-
- if (row_info->color_type == PNG_COLOR_TYPE_RGB)
- bytes_per_pixel = 6;
-
- else if (row_info->color_type == PNG_COLOR_TYPE_RGB_ALPHA)
- bytes_per_pixel = 8;
-
- else
- return;
-
- for (i = 0, rp = row; i < row_width; i++, rp += bytes_per_pixel)
- {
- png_uint_32 s0 = (*(rp ) << 8) | *(rp + 1);
- png_uint_32 s1 = (*(rp + 2) << 8) | *(rp + 3);
- png_uint_32 s2 = (*(rp + 4) << 8) | *(rp + 5);
- png_uint_32 red = (png_uint_32)((s0 - s1) & 0xffffL);
- png_uint_32 blue = (png_uint_32)((s2 - s1) & 0xffffL);
- *(rp ) = (png_byte)((red >> 8) & 0xff);
- *(rp + 1) = (png_byte)(red & 0xff);
- *(rp + 4) = (png_byte)((blue >> 8) & 0xff);
- *(rp + 5) = (png_byte)(blue & 0xff);
- }
- }
-#endif /* PNG_WRITE_16BIT_SUPPORTED */
- }
-}
-#endif /* PNG_MNG_FEATURES_SUPPORTED */
-#endif /* PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-/* pngwutil.c - utilities to write a PNG file
- *
- * Last changed in libpng 1.6.2 [April 25, 2013]
- * Copyright (c) 1998-2013 Glenn Randers-Pehrson
- * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
- * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#include "pngpriv.h"
-
-#ifdef PNG_WRITE_SUPPORTED
-
-#ifdef PNG_WRITE_INT_FUNCTIONS_SUPPORTED
-/* Place a 32-bit number into a buffer in PNG byte order. We work
- * with unsigned numbers for convenience, although one supported
- * ancillary chunk uses signed (two's complement) numbers.
- */
-void PNGAPI
-png_save_uint_32(png_bytep buf, png_uint_32 i)
-{
- buf[0] = (png_byte)((i >> 24) & 0xff);
- buf[1] = (png_byte)((i >> 16) & 0xff);
- buf[2] = (png_byte)((i >> 8) & 0xff);
- buf[3] = (png_byte)(i & 0xff);
-}
-
-/* Place a 16-bit number into a buffer in PNG byte order.
- * The parameter is declared unsigned int, not png_uint_16,
- * just to avoid potential problems on pre-ANSI C compilers.
- */
-void PNGAPI
-png_save_uint_16(png_bytep buf, unsigned int i)
-{
- buf[0] = (png_byte)((i >> 8) & 0xff);
- buf[1] = (png_byte)(i & 0xff);
-}
-#endif
-
-/* Simple function to write the signature. If we have already written
- * the magic bytes of the signature, or more likely, the PNG stream is
- * being embedded into another stream and doesn't need its own signature,
- * we should call png_set_sig_bytes() to tell libpng how many of the
- * bytes have already been written.
- */
-void PNGAPI
-png_write_sig(png_structrp png_ptr)
-{
- png_byte png_signature[8] = {137, 80, 78, 71, 13, 10, 26, 10};
-
-#ifdef PNG_IO_STATE_SUPPORTED
- /* Inform the I/O callback that the signature is being written */
- png_ptr->io_state = PNG_IO_WRITING | PNG_IO_SIGNATURE;
-#endif
-
- /* Write the rest of the 8 byte signature */
- png_write_data(png_ptr, &png_signature[png_ptr->sig_bytes],
- (png_size_t)(8 - png_ptr->sig_bytes));
-
- if (png_ptr->sig_bytes < 3)
- png_ptr->mode |= PNG_HAVE_PNG_SIGNATURE;
-}
-
-/* Write the start of a PNG chunk. The type is the chunk type.
- * The total_length is the sum of the lengths of all the data you will be
- * passing in png_write_chunk_data().
- */
-static void
-png_write_chunk_header(png_structrp png_ptr, png_uint_32 chunk_name,
- png_uint_32 length)
-{
- png_byte buf[8];
-
-#if defined(PNG_DEBUG) && (PNG_DEBUG > 0)
- PNG_CSTRING_FROM_CHUNK(buf, chunk_name);
- png_debug2(0, "Writing %s chunk, length = %lu", buf, (unsigned long)length);
-#endif
-
- if (png_ptr == NULL)
- return;
-
-#ifdef PNG_IO_STATE_SUPPORTED
- /* Inform the I/O callback that the chunk header is being written.
- * PNG_IO_CHUNK_HDR requires a single I/O call.
- */
- png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_HDR;
-#endif
-
- /* Write the length and the chunk name */
- png_save_uint_32(buf, length);
- png_save_uint_32(buf + 4, chunk_name);
- png_write_data(png_ptr, buf, 8);
-
- /* Put the chunk name into png_ptr->chunk_name */
- png_ptr->chunk_name = chunk_name;
-
- /* Reset the crc and run it over the chunk name */
- png_reset_crc(png_ptr);
-
- png_calculate_crc(png_ptr, buf + 4, 4);
-
-#ifdef PNG_IO_STATE_SUPPORTED
- /* Inform the I/O callback that chunk data will (possibly) be written.
- * PNG_IO_CHUNK_DATA does NOT require a specific number of I/O calls.
- */
- png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_DATA;
-#endif
-}
-
-void PNGAPI
-png_write_chunk_start(png_structrp png_ptr, png_const_bytep chunk_string,
- png_uint_32 length)
-{
- png_write_chunk_header(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), length);
-}
-
-/* Write the data of a PNG chunk started with png_write_chunk_header().
- * Note that multiple calls to this function are allowed, and that the
- * sum of the lengths from these calls *must* add up to the total_length
- * given to png_write_chunk_header().
- */
-void PNGAPI
-png_write_chunk_data(png_structrp png_ptr, png_const_bytep data,
- png_size_t length)
-{
- /* Write the data, and run the CRC over it */
- if (png_ptr == NULL)
- return;
-
- if (data != NULL && length > 0)
- {
- png_write_data(png_ptr, data, length);
-
- /* Update the CRC after writing the data,
- * in case that the user I/O routine alters it.
- */
- png_calculate_crc(png_ptr, data, length);
- }
-}
-
-/* Finish a chunk started with png_write_chunk_header(). */
-void PNGAPI
-png_write_chunk_end(png_structrp png_ptr)
-{
- png_byte buf[4];
-
- if (png_ptr == NULL) return;
-
-#ifdef PNG_IO_STATE_SUPPORTED
- /* Inform the I/O callback that the chunk CRC is being written.
- * PNG_IO_CHUNK_CRC requires a single I/O function call.
- */
- png_ptr->io_state = PNG_IO_WRITING | PNG_IO_CHUNK_CRC;
-#endif
-
- /* Write the crc in a single operation */
- png_save_uint_32(buf, png_ptr->crc);
-
- png_write_data(png_ptr, buf, (png_size_t)4);
-}
-
-/* Write a PNG chunk all at once. The type is an array of ASCII characters
- * representing the chunk name. The array must be at least 4 bytes in
- * length, and does not need to be null terminated. To be safe, pass the
- * pre-defined chunk names here, and if you need a new one, define it
- * where the others are defined. The length is the length of the data.
- * All the data must be present. If that is not possible, use the
- * png_write_chunk_start(), png_write_chunk_data(), and png_write_chunk_end()
- * functions instead.
- */
-static void
-png_write_complete_chunk(png_structrp png_ptr, png_uint_32 chunk_name,
- png_const_bytep data, png_size_t length)
-{
- if (png_ptr == NULL)
- return;
-
- /* On 64 bit architectures 'length' may not fit in a png_uint_32. */
- if (length > PNG_UINT_31_MAX)
- png_error(png_ptr, "length exceeds PNG maxima");
-
- png_write_chunk_header(png_ptr, chunk_name, (png_uint_32)length);
- png_write_chunk_data(png_ptr, data, length);
- png_write_chunk_end(png_ptr);
-}
-
-/* This is the API that calls the internal function above. */
-void PNGAPI
-png_write_chunk(png_structrp png_ptr, png_const_bytep chunk_string,
- png_const_bytep data, png_size_t length)
-{
- png_write_complete_chunk(png_ptr, PNG_CHUNK_FROM_STRING(chunk_string), data,
- length);
-}
-
-/* This is used below to find the size of an image to pass to png_deflate_claim,
- * so it only needs to be accurate if the size is less than 16384 bytes (the
- * point at which a lower LZ window size can be used.)
- */
-static png_alloc_size_t
-png_image_size(png_structrp png_ptr)
-{
- /* Only return sizes up to the maximum of a png_uint_32, do this by limiting
- * the width and height used to 15 bits.
- */
- png_uint_32 h = png_ptr->height;
-
- if (png_ptr->rowbytes < 32768 && h < 32768)
- {
- if (png_ptr->interlaced)
- {
- /* Interlacing makes the image larger because of the replication of
- * both the filter byte and the padding to a byte boundary.
- */
- png_uint_32 w = png_ptr->width;
- unsigned int pd = png_ptr->pixel_depth;
- png_alloc_size_t cb_base;
- int pass;
-
- for (cb_base=0, pass=0; pass<=6; ++pass)
- {
- png_uint_32 pw = PNG_PASS_COLS(w, pass);
-
- if (pw > 0)
- cb_base += (PNG_ROWBYTES(pd, pw)+1) * PNG_PASS_ROWS(h, pass);
- }
-
- return cb_base;
- }
-
- else
- return (png_ptr->rowbytes+1) * h;
- }
-
- else
- return 0xffffffffU;
-}
-
-#ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
- /* This is the code to hack the first two bytes of the deflate stream (the
- * deflate header) to correct the windowBits value to match the actual data
- * size. Note that the second argument is the *uncompressed* size but the
- * first argument is the *compressed* data (and it must be deflate
- * compressed.)
- */
-static void
-optimize_cmf(png_bytep data, png_alloc_size_t data_size)
-{
- /* Optimize the CMF field in the zlib stream. The resultant zlib stream is
- * still compliant to the stream specification.
- */
- if (data_size <= 16384) /* else windowBits must be 15 */
- {
- unsigned int z_cmf = data[0]; /* zlib compression method and flags */
-
- if ((z_cmf & 0x0f) == 8 && (z_cmf & 0xf0) <= 0x70)
- {
- unsigned int z_cinfo;
- unsigned int half_z_window_size;
-
- z_cinfo = z_cmf >> 4;
- half_z_window_size = 1U << (z_cinfo + 7);
-
- if (data_size <= half_z_window_size) /* else no change */
- {
- unsigned int tmp;
-
- do
- {
- half_z_window_size >>= 1;
- --z_cinfo;
- }
- while (z_cinfo > 0 && data_size <= half_z_window_size);
-
- z_cmf = (z_cmf & 0x0f) | (z_cinfo << 4);
-
- data[0] = (png_byte)z_cmf;
- tmp = data[1] & 0xe0;
- tmp += 0x1f - ((z_cmf << 8) + tmp) % 0x1f;
- data[1] = (png_byte)tmp;
- }
- }
- }
-}
-#else
-# define optimize_cmf(dp,dl) ((void)0)
-#endif /* PNG_WRITE_OPTIMIZE_CMF_SUPPORTED */
-
-/* Initialize the compressor for the appropriate type of compression. */
-static int
-png_deflate_claim(png_structrp png_ptr, png_uint_32 owner,
- png_alloc_size_t data_size)
-{
- if (png_ptr->zowner != 0)
- {
- char msg[64];
-
- PNG_STRING_FROM_CHUNK(msg, owner);
- msg[4] = ':';
- msg[5] = ' ';
- PNG_STRING_FROM_CHUNK(msg+6, png_ptr->zowner);
- /* So the message that results is "<chunk> using zstream"; this is an
- * internal error, but is very useful for debugging. i18n requirements
- * are minimal.
- */
- (void)png_safecat(msg, (sizeof msg), 10, " using zstream");
-# if PNG_LIBPNG_BUILD_BASE_TYPE >= PNG_LIBPNG_BUILD_RC
- png_warning(png_ptr, msg);
-
- /* Attempt sane error recovery */
- if (png_ptr->zowner == png_IDAT) /* don't steal from IDAT */
- {
- png_ptr->zstream.msg = PNGZ_MSG_CAST("in use by IDAT");
- return Z_STREAM_ERROR;
- }
-
- png_ptr->zowner = 0;
-# else
- png_error(png_ptr, msg);
-# endif
- }
-
- {
- int level = png_ptr->zlib_level;
- int method = png_ptr->zlib_method;
- int windowBits = png_ptr->zlib_window_bits;
- int memLevel = png_ptr->zlib_mem_level;
- int strategy; /* set below */
- int ret; /* zlib return code */
-
- if (owner == png_IDAT)
- {
- if (png_ptr->flags & PNG_FLAG_ZLIB_CUSTOM_STRATEGY)
- strategy = png_ptr->zlib_strategy;
-
- else if (png_ptr->do_filter != PNG_FILTER_NONE)
- strategy = PNG_Z_DEFAULT_STRATEGY;
-
- else
- strategy = PNG_Z_DEFAULT_NOFILTER_STRATEGY;
- }
-
- else
- {
-# ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
- level = png_ptr->zlib_text_level;
- method = png_ptr->zlib_text_method;
- windowBits = png_ptr->zlib_text_window_bits;
- memLevel = png_ptr->zlib_text_mem_level;
- strategy = png_ptr->zlib_text_strategy;
-# else
- /* If customization is not supported the values all come from the
- * IDAT values except for the strategy, which is fixed to the
- * default. (This is the pre-1.6.0 behavior too, although it was
- * implemented in a very different way.)
- */
- strategy = Z_DEFAULT_STRATEGY;
-# endif
- }
-
- /* Adjust 'windowBits' down if larger than 'data_size'; to stop this
- * happening just pass 32768 as the data_size parameter. Notice that zlib
- * requires an extra 262 bytes in the window in addition to the data to be
- * able to see the whole of the data, so if data_size+262 takes us to the
- * next windowBits size we need to fix up the value later. (Because even
- * though deflate needs the extra window, inflate does not!)
- */
- if (data_size <= 16384)
- {
- /* IMPLEMENTATION NOTE: this 'half_window_size' stuff is only here to
- * work round a Microsoft Visual C misbehavior which, contrary to C-90,
- * widens the result of the following shift to 64-bits if (and,
- * apparently, only if) it is used in a test.
- */
- unsigned int half_window_size = 1U << (windowBits-1);
-
- while (data_size + 262 <= half_window_size)
- {
- half_window_size >>= 1;
- --windowBits;
- }
- }
-
- /* Check against the previous initialized values, if any. */
- if ((png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED) &&
- (png_ptr->zlib_set_level != level ||
- png_ptr->zlib_set_method != method ||
- png_ptr->zlib_set_window_bits != windowBits ||
- png_ptr->zlib_set_mem_level != memLevel ||
- png_ptr->zlib_set_strategy != strategy))
- {
- if (deflateEnd(&png_ptr->zstream) != Z_OK)
- png_warning(png_ptr, "deflateEnd failed (ignored)");
-
- png_ptr->flags &= ~PNG_FLAG_ZSTREAM_INITIALIZED;
- }
-
- /* For safety clear out the input and output pointers (currently zlib
- * doesn't use them on Init, but it might in the future).
- */
- png_ptr->zstream.next_in = NULL;
- png_ptr->zstream.avail_in = 0;
- png_ptr->zstream.next_out = NULL;
- png_ptr->zstream.avail_out = 0;
-
- /* Now initialize if required, setting the new parameters, otherwise just
- * to a simple reset to the previous parameters.
- */
- if (png_ptr->flags & PNG_FLAG_ZSTREAM_INITIALIZED)
- ret = deflateReset(&png_ptr->zstream);
-
- else
- {
- ret = deflateInit2(&png_ptr->zstream, level, method, windowBits,
- memLevel, strategy);
-
- if (ret == Z_OK)
- png_ptr->flags |= PNG_FLAG_ZSTREAM_INITIALIZED;
- }
-
- /* The return code is from either deflateReset or deflateInit2; they have
- * pretty much the same set of error codes.
- */
- if (ret == Z_OK)
- png_ptr->zowner = owner;
-
- else
- png_zstream_error(png_ptr, ret);
-
- return ret;
- }
-}
-
-/* Clean up (or trim) a linked list of compression buffers. */
-void /* PRIVATE */
-png_free_buffer_list(png_structrp png_ptr, png_compression_bufferp *listp)
-{
- png_compression_bufferp list = *listp;
-
- if (list != NULL)
- {
- *listp = NULL;
-
- do
- {
- png_compression_bufferp next = list->next;
-
- png_free(png_ptr, list);
- list = next;
- }
- while (list != NULL);
- }
-}
-
-#ifdef PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
-/* This pair of functions encapsulates the operation of (a) compressing a
- * text string, and (b) issuing it later as a series of chunk data writes.
- * The compression_state structure is shared context for these functions
- * set up by the caller to allow access to the relevant local variables.
- *
- * compression_buffer (new in 1.6.0) is just a linked list of zbuffer_size
- * temporary buffers. From 1.6.0 it is retained in png_struct so that it will
- * be correctly freed in the event of a write error (previous implementations
- * just leaked memory.)
- */
-typedef struct
-{
- png_const_bytep input; /* The uncompressed input data */
- png_alloc_size_t input_len; /* Its length */
- png_uint_32 output_len; /* Final compressed length */
- png_byte output[1024]; /* First block of output */
-} compression_state;
-
-static void
-png_text_compress_init(compression_state *comp, png_const_bytep input,
- png_alloc_size_t input_len)
-{
- comp->input = input;
- comp->input_len = input_len;
- comp->output_len = 0;
-}
-
-/* Compress the data in the compression state input */
-static int
-png_text_compress(png_structrp png_ptr, png_uint_32 chunk_name,
- compression_state *comp, png_uint_32 prefix_len)
-{
- int ret;
-
- /* To find the length of the output it is necessary to first compress the
- * input, the result is buffered rather than using the two-pass algorithm
- * that is used on the inflate side; deflate is assumed to be slower and a
- * PNG writer is assumed to have more memory available than a PNG reader.
- *
- * IMPLEMENTATION NOTE: the zlib API deflateBound() can be used to find an
- * upper limit on the output size, but it is always bigger than the input
- * size so it is likely to be more efficient to use this linked-list
- * approach.
- */
- ret = png_deflate_claim(png_ptr, chunk_name, comp->input_len);
-
- if (ret != Z_OK)
- return ret;
-
- /* Set up the compression buffers, we need a loop here to avoid overflowing a
- * uInt. Use ZLIB_IO_MAX to limit the input. The output is always limited
- * by the output buffer size, so there is no need to check that. Since this
- * is ANSI-C we know that an 'int', hence a uInt, is always at least 16 bits
- * in size.
- */
- {
- png_compression_bufferp *end = &png_ptr->zbuffer_list;
- png_alloc_size_t input_len = comp->input_len; /* may be zero! */
- png_uint_32 output_len;
-
- /* zlib updates these for us: */
- png_ptr->zstream.next_in = PNGZ_INPUT_CAST(comp->input);
- png_ptr->zstream.avail_in = 0; /* Set below */
- png_ptr->zstream.next_out = comp->output;
- png_ptr->zstream.avail_out = (sizeof comp->output);
-
- output_len = png_ptr->zstream.avail_out;
-
- do
- {
- uInt avail_in = ZLIB_IO_MAX;
-
- if (avail_in > input_len)
- avail_in = (uInt)input_len;
-
- input_len -= avail_in;
-
- png_ptr->zstream.avail_in = avail_in;
-
- if (png_ptr->zstream.avail_out == 0)
- {
- png_compression_buffer *next;
-
- /* Chunk data is limited to 2^31 bytes in length, so the prefix
- * length must be counted here.
- */
- if (output_len + prefix_len > PNG_UINT_31_MAX)
- {
- ret = Z_MEM_ERROR;
- break;
- }
-
- /* Need a new (malloc'ed) buffer, but there may be one present
- * already.
- */
- next = *end;
- if (next == NULL)
- {
- next = png_voidcast(png_compression_bufferp, png_malloc_base
- (png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr)));
-
- if (next == NULL)
- {
- ret = Z_MEM_ERROR;
- break;
- }
-
- /* Link in this buffer (so that it will be freed later) */
- next->next = NULL;
- *end = next;
- }
-
- png_ptr->zstream.next_out = next->output;
- png_ptr->zstream.avail_out = png_ptr->zbuffer_size;
- output_len += png_ptr->zstream.avail_out;
-
- /* Move 'end' to the next buffer pointer. */
- end = &next->next;
- }
-
- /* Compress the data */
- ret = deflate(&png_ptr->zstream,
- input_len > 0 ? Z_NO_FLUSH : Z_FINISH);
-
- /* Claw back input data that was not consumed (because avail_in is
- * reset above every time round the loop).
- */
- input_len += png_ptr->zstream.avail_in;
- png_ptr->zstream.avail_in = 0; /* safety */
- }
- while (ret == Z_OK);
-
- /* There may be some space left in the last output buffer, this needs to
- * be subtracted from output_len.
- */
- output_len -= png_ptr->zstream.avail_out;
- png_ptr->zstream.avail_out = 0; /* safety */
- comp->output_len = output_len;
-
- /* Now double check the output length, put in a custom message if it is
- * too long. Otherwise ensure the z_stream::msg pointer is set to
- * something.
- */
- if (output_len + prefix_len >= PNG_UINT_31_MAX)
- {
- png_ptr->zstream.msg = PNGZ_MSG_CAST("compressed data too long");
- ret = Z_MEM_ERROR;
- }
-
- else
- png_zstream_error(png_ptr, ret);
-
- /* Reset zlib for another zTXt/iTXt or image data */
- png_ptr->zowner = 0;
-
- /* The only success case is Z_STREAM_END, input_len must be 0, if not this
- * is an internal error.
- */
- if (ret == Z_STREAM_END && input_len == 0)
- {
- /* Fix up the deflate header, if required */
- optimize_cmf(comp->output, comp->input_len);
-
- /* But Z_OK is returned, not Z_STREAM_END; this allows the claim
- * function above to return Z_STREAM_END on an error (though it never
- * does in the current versions of zlib.)
- */
- return Z_OK;
- }
-
- else
- return ret;
- }
-}
-
-/* Ship the compressed text out via chunk writes */
-static void
-png_write_compressed_data_out(png_structrp png_ptr, compression_state *comp)
-{
- png_uint_32 output_len = comp->output_len;
- png_const_bytep output = comp->output;
- png_uint_32 avail = (sizeof comp->output);
- png_compression_buffer *next = png_ptr->zbuffer_list;
-
- for (;;)
- {
- if (avail > output_len)
- avail = output_len;
-
- png_write_chunk_data(png_ptr, output, avail);
-
- output_len -= avail;
-
- if (output_len == 0 || next == NULL)
- break;
-
- avail = png_ptr->zbuffer_size;
- output = next->output;
- next = next->next;
- }
-
- /* This is an internal error; 'next' must have been NULL! */
- if (output_len > 0)
- png_error(png_ptr, "error writing ancillary chunked compressed data");
-}
-#endif /* PNG_WRITE_COMPRESSED_TEXT_SUPPORTED */
-
-#if defined(PNG_WRITE_TEXT_SUPPORTED) || defined(PNG_WRITE_pCAL_SUPPORTED) || \
- defined(PNG_WRITE_iCCP_SUPPORTED) || defined(PNG_WRITE_sPLT_SUPPORTED)
-/* Check that the tEXt or zTXt keyword is valid per PNG 1.0 specification,
- * and if invalid, correct the keyword rather than discarding the entire
- * chunk. The PNG 1.0 specification requires keywords 1-79 characters in
- * length, forbids leading or trailing whitespace, multiple internal spaces,
- * and the non-break space (0x80) from ISO 8859-1. Returns keyword length.
- *
- * The 'new_key' buffer must be 80 characters in size (for the keyword plus a
- * trailing '\0'). If this routine returns 0 then there was no keyword, or a
- * valid one could not be generated, and the caller must png_error.
- */
-static png_uint_32
-png_check_keyword(png_structrp png_ptr, png_const_charp key, png_bytep new_key)
-{
- png_const_charp orig_key = key;
- png_uint_32 key_len = 0;
- int bad_character = 0;
- int space = 1;
-
- png_debug(1, "in png_check_keyword");
-
- if (key == NULL)
- {
- *new_key = 0;
- return 0;
- }
-
- while (*key && key_len < 79)
- {
- png_byte ch = (png_byte)(0xff & *key++);
-
- if ((ch > 32 && ch <= 126) || (ch >= 161 /*&& ch <= 255*/))
- *new_key++ = ch, ++key_len, space = 0;
-
- else if (!space)
- {
- /* A space or an invalid character when one wasn't seen immediately
- * before; output just a space.
- */
- *new_key++ = 32, ++key_len, space = 1;
-
- /* If the character was not a space then it is invalid. */
- if (ch != 32)
- bad_character = ch;
- }
-
- else if (!bad_character)
- bad_character = ch; /* just skip it, record the first error */
- }
-
- if (key_len > 0 && space) /* trailing space */
- {
- --key_len, --new_key;
- if (!bad_character)
- bad_character = 32;
- }
-
- /* Terminate the keyword */
- *new_key = 0;
-
- if (key_len == 0)
- return 0;
-
- /* Try to only output one warning per keyword: */
- if (*key) /* keyword too long */
- png_warning(png_ptr, "keyword truncated");
-
- else if (bad_character)
- {
- PNG_WARNING_PARAMETERS(p)
-
- png_warning_parameter(p, 1, orig_key);
- png_warning_parameter_signed(p, 2, PNG_NUMBER_FORMAT_02x, bad_character);
-
- png_formatted_warning(png_ptr, p, "keyword \"@1\": bad character '0x@2'");
- }
-
- return key_len;
-}
-#endif
-
-/* Write the IHDR chunk, and update the png_struct with the necessary
- * information. Note that the rest of this code depends upon this
- * information being correct.
- */
-void /* PRIVATE */
-png_write_IHDR(png_structrp png_ptr, png_uint_32 width, png_uint_32 height,
- int bit_depth, int color_type, int compression_type, int filter_type,
- int interlace_type)
-{
- png_byte buf[13]; /* Buffer to store the IHDR info */
-
- png_debug(1, "in png_write_IHDR");
-
- /* Check that we have valid input data from the application info */
- switch (color_type)
- {
- case PNG_COLOR_TYPE_GRAY:
- switch (bit_depth)
- {
- case 1:
- case 2:
- case 4:
- case 8:
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- case 16:
-#endif
- png_ptr->channels = 1; break;
-
- default:
- png_error(png_ptr,
- "Invalid bit depth for grayscale image");
- }
- break;
-
- case PNG_COLOR_TYPE_RGB:
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- if (bit_depth != 8 && bit_depth != 16)
-#else
- if (bit_depth != 8)
-#endif
- png_error(png_ptr, "Invalid bit depth for RGB image");
-
- png_ptr->channels = 3;
- break;
-
- case PNG_COLOR_TYPE_PALETTE:
- switch (bit_depth)
- {
- case 1:
- case 2:
- case 4:
- case 8:
- png_ptr->channels = 1;
- break;
-
- default:
- png_error(png_ptr, "Invalid bit depth for paletted image");
- }
- break;
-
- case PNG_COLOR_TYPE_GRAY_ALPHA:
- if (bit_depth != 8 && bit_depth != 16)
- png_error(png_ptr, "Invalid bit depth for grayscale+alpha image");
-
- png_ptr->channels = 2;
- break;
-
- case PNG_COLOR_TYPE_RGB_ALPHA:
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- if (bit_depth != 8 && bit_depth != 16)
-#else
- if (bit_depth != 8)
-#endif
- png_error(png_ptr, "Invalid bit depth for RGBA image");
-
- png_ptr->channels = 4;
- break;
-
- default:
- png_error(png_ptr, "Invalid image color type specified");
- }
-
- if (compression_type != PNG_COMPRESSION_TYPE_BASE)
- {
- png_warning(png_ptr, "Invalid compression type specified");
- compression_type = PNG_COMPRESSION_TYPE_BASE;
- }
-
- /* Write filter_method 64 (intrapixel differencing) only if
- * 1. Libpng was compiled with PNG_MNG_FEATURES_SUPPORTED and
- * 2. Libpng did not write a PNG signature (this filter_method is only
- * used in PNG datastreams that are embedded in MNG datastreams) and
- * 3. The application called png_permit_mng_features with a mask that
- * included PNG_FLAG_MNG_FILTER_64 and
- * 4. The filter_method is 64 and
- * 5. The color_type is RGB or RGBA
- */
- if (
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- !((png_ptr->mng_features_permitted & PNG_FLAG_MNG_FILTER_64) &&
- ((png_ptr->mode&PNG_HAVE_PNG_SIGNATURE) == 0) &&
- (color_type == PNG_COLOR_TYPE_RGB ||
- color_type == PNG_COLOR_TYPE_RGB_ALPHA) &&
- (filter_type == PNG_INTRAPIXEL_DIFFERENCING)) &&
-#endif
- filter_type != PNG_FILTER_TYPE_BASE)
- {
- png_warning(png_ptr, "Invalid filter type specified");
- filter_type = PNG_FILTER_TYPE_BASE;
- }
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- if (interlace_type != PNG_INTERLACE_NONE &&
- interlace_type != PNG_INTERLACE_ADAM7)
- {
- png_warning(png_ptr, "Invalid interlace type specified");
- interlace_type = PNG_INTERLACE_ADAM7;
- }
-#else
- interlace_type=PNG_INTERLACE_NONE;
-#endif
-
- /* Save the relevent information */
- png_ptr->bit_depth = (png_byte)bit_depth;
- png_ptr->color_type = (png_byte)color_type;
- png_ptr->interlaced = (png_byte)interlace_type;
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- png_ptr->filter_type = (png_byte)filter_type;
-#endif
- png_ptr->compression_type = (png_byte)compression_type;
- png_ptr->width = width;
- png_ptr->height = height;
-
- png_ptr->pixel_depth = (png_byte)(bit_depth * png_ptr->channels);
- png_ptr->rowbytes = PNG_ROWBYTES(png_ptr->pixel_depth, width);
- /* Set the usr info, so any transformations can modify it */
- png_ptr->usr_width = png_ptr->width;
- png_ptr->usr_bit_depth = png_ptr->bit_depth;
- png_ptr->usr_channels = png_ptr->channels;
-
- /* Pack the header information into the buffer */
- png_save_uint_32(buf, width);
- png_save_uint_32(buf + 4, height);
- buf[8] = (png_byte)bit_depth;
- buf[9] = (png_byte)color_type;
- buf[10] = (png_byte)compression_type;
- buf[11] = (png_byte)filter_type;
- buf[12] = (png_byte)interlace_type;
-
- /* Write the chunk */
- png_write_complete_chunk(png_ptr, png_IHDR, buf, (png_size_t)13);
-
- if (!(png_ptr->do_filter))
- {
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE ||
- png_ptr->bit_depth < 8)
- png_ptr->do_filter = PNG_FILTER_NONE;
-
- else
- png_ptr->do_filter = PNG_ALL_FILTERS;
- }
-
- png_ptr->mode = PNG_HAVE_IHDR; /* not READY_FOR_ZTXT */
-}
-
-/* Write the palette. We are careful not to trust png_color to be in the
- * correct order for PNG, so people can redefine it to any convenient
- * structure.
- */
-void /* PRIVATE */
-png_write_PLTE(png_structrp png_ptr, png_const_colorp palette,
- png_uint_32 num_pal)
-{
- png_uint_32 i;
- png_const_colorp pal_ptr;
- png_byte buf[3];
-
- png_debug(1, "in png_write_PLTE");
-
- if ((
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- !(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE) &&
-#endif
- num_pal == 0) || num_pal > 256)
- {
- if (png_ptr->color_type == PNG_COLOR_TYPE_PALETTE)
- {
- png_error(png_ptr, "Invalid number of colors in palette");
- }
-
- else
- {
- png_warning(png_ptr, "Invalid number of colors in palette");
- return;
- }
- }
-
- if (!(png_ptr->color_type&PNG_COLOR_MASK_COLOR))
- {
- png_warning(png_ptr,
- "Ignoring request to write a PLTE chunk in grayscale PNG");
-
- return;
- }
-
- png_ptr->num_palette = (png_uint_16)num_pal;
- png_debug1(3, "num_palette = %d", png_ptr->num_palette);
-
- png_write_chunk_header(png_ptr, png_PLTE, (png_uint_32)(num_pal * 3));
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
-
- for (i = 0, pal_ptr = palette; i < num_pal; i++, pal_ptr++)
- {
- buf[0] = pal_ptr->red;
- buf[1] = pal_ptr->green;
- buf[2] = pal_ptr->blue;
- png_write_chunk_data(png_ptr, buf, (png_size_t)3);
- }
-
-#else
- /* This is a little slower but some buggy compilers need to do this
- * instead
- */
- pal_ptr=palette;
-
- for (i = 0; i < num_pal; i++)
- {
- buf[0] = pal_ptr[i].red;
- buf[1] = pal_ptr[i].green;
- buf[2] = pal_ptr[i].blue;
- png_write_chunk_data(png_ptr, buf, (png_size_t)3);
- }
-
-#endif
- png_write_chunk_end(png_ptr);
- png_ptr->mode |= PNG_HAVE_PLTE;
-}
-
-/* This is similar to png_text_compress, above, except that it does not require
- * all of the data at once and, instead of buffering the compressed result,
- * writes it as IDAT chunks. Unlike png_text_compress it *can* png_error out
- * because it calls the write interface. As a result it does its own error
- * reporting and does not return an error code. In the event of error it will
- * just call png_error. The input data length may exceed 32-bits. The 'flush'
- * parameter is exactly the same as that to deflate, with the following
- * meanings:
- *
- * Z_NO_FLUSH: normal incremental output of compressed data
- * Z_SYNC_FLUSH: do a SYNC_FLUSH, used by png_write_flush
- * Z_FINISH: this is the end of the input, do a Z_FINISH and clean up
- *
- * The routine manages the acquire and release of the png_ptr->zstream by
- * checking and (at the end) clearing png_ptr->zowner, it does some sanity
- * checks on the 'mode' flags while doing this.
- */
-void /* PRIVATE */
-png_compress_IDAT(png_structrp png_ptr, png_const_bytep input,
- png_alloc_size_t input_len, int flush)
-{
- if (png_ptr->zowner != png_IDAT)
- {
- /* First time. Ensure we have a temporary buffer for compression and
- * trim the buffer list if it has more than one entry to free memory.
- * If 'WRITE_COMPRESSED_TEXT' is not set the list will never have been
- * created at this point, but the check here is quick and safe.
- */
- if (png_ptr->zbuffer_list == NULL)
- {
- png_ptr->zbuffer_list = png_voidcast(png_compression_bufferp,
- png_malloc(png_ptr, PNG_COMPRESSION_BUFFER_SIZE(png_ptr)));
- png_ptr->zbuffer_list->next = NULL;
- }
-
- else
- png_free_buffer_list(png_ptr, &png_ptr->zbuffer_list->next);
-
- /* It is a terminal error if we can't claim the zstream. */
- if (png_deflate_claim(png_ptr, png_IDAT, png_image_size(png_ptr)) != Z_OK)
- png_error(png_ptr, png_ptr->zstream.msg);
-
- /* The output state is maintained in png_ptr->zstream, so it must be
- * initialized here after the claim.
- */
- png_ptr->zstream.next_out = png_ptr->zbuffer_list->output;
- png_ptr->zstream.avail_out = png_ptr->zbuffer_size;
- }
-
- /* Now loop reading and writing until all the input is consumed or an error
- * terminates the operation. The _out values are maintained across calls to
- * this function, but the input must be reset each time.
- */
- png_ptr->zstream.next_in = PNGZ_INPUT_CAST(input);
- png_ptr->zstream.avail_in = 0; /* set below */
- for (;;)
- {
- int ret;
-
- /* INPUT: from the row data */
- uInt avail = ZLIB_IO_MAX;
-
- if (avail > input_len)
- avail = (uInt)input_len; /* safe because of the check */
-
- png_ptr->zstream.avail_in = avail;
- input_len -= avail;
-
- ret = deflate(&png_ptr->zstream, input_len > 0 ? Z_NO_FLUSH : flush);
-
- /* Include as-yet unconsumed input */
- input_len += png_ptr->zstream.avail_in;
- png_ptr->zstream.avail_in = 0;
-
- /* OUTPUT: write complete IDAT chunks when avail_out drops to zero, note
- * that these two zstream fields are preserved across the calls, therefore
- * there is no need to set these up on entry to the loop.
- */
- if (png_ptr->zstream.avail_out == 0)
- {
- png_bytep data = png_ptr->zbuffer_list->output;
- uInt size = png_ptr->zbuffer_size;
-
- /* Write an IDAT containing the data then reset the buffer. The
- * first IDAT may need deflate header optimization.
- */
-# ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
- if (!(png_ptr->mode & PNG_HAVE_IDAT) &&
- png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE)
- optimize_cmf(data, png_image_size(png_ptr));
-# endif
-
- png_write_complete_chunk(png_ptr, png_IDAT, data, size);
- png_ptr->mode |= PNG_HAVE_IDAT;
-
- png_ptr->zstream.next_out = data;
- png_ptr->zstream.avail_out = size;
-
- /* For SYNC_FLUSH or FINISH it is essential to keep calling zlib with
- * the same flush parameter until it has finished output, for NO_FLUSH
- * it doesn't matter.
- */
- if (ret == Z_OK && flush != Z_NO_FLUSH)
- continue;
- }
-
- /* The order of these checks doesn't matter much; it just effect which
- * possible error might be detected if multiple things go wrong at once.
- */
- if (ret == Z_OK) /* most likely return code! */
- {
- /* If all the input has been consumed then just return. If Z_FINISH
- * was used as the flush parameter something has gone wrong if we get
- * here.
- */
- if (input_len == 0)
- {
- if (flush == Z_FINISH)
- png_error(png_ptr, "Z_OK on Z_FINISH with output space");
-
- return;
- }
- }
-
- else if (ret == Z_STREAM_END && flush == Z_FINISH)
- {
- /* This is the end of the IDAT data; any pending output must be
- * flushed. For small PNG files we may still be at the beginning.
- */
- png_bytep data = png_ptr->zbuffer_list->output;
- uInt size = png_ptr->zbuffer_size - png_ptr->zstream.avail_out;
-
-# ifdef PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
- if (!(png_ptr->mode & PNG_HAVE_IDAT) &&
- png_ptr->compression_type == PNG_COMPRESSION_TYPE_BASE)
- optimize_cmf(data, png_image_size(png_ptr));
-# endif
-
- png_write_complete_chunk(png_ptr, png_IDAT, data, size);
- png_ptr->zstream.avail_out = 0;
- png_ptr->zstream.next_out = NULL;
- png_ptr->mode |= PNG_HAVE_IDAT | PNG_AFTER_IDAT;
-
- png_ptr->zowner = 0; /* Release the stream */
- return;
- }
-
- else
- {
- /* This is an error condition. */
- png_zstream_error(png_ptr, ret);
- png_error(png_ptr, png_ptr->zstream.msg);
- }
- }
-}
-
-/* Write an IEND chunk */
-void /* PRIVATE */
-png_write_IEND(png_structrp png_ptr)
-{
- png_debug(1, "in png_write_IEND");
-
- png_write_complete_chunk(png_ptr, png_IEND, NULL, (png_size_t)0);
- png_ptr->mode |= PNG_HAVE_IEND;
-}
-
-#ifdef PNG_WRITE_gAMA_SUPPORTED
-/* Write a gAMA chunk */
-void /* PRIVATE */
-png_write_gAMA_fixed(png_structrp png_ptr, png_fixed_point file_gamma)
-{
- png_byte buf[4];
-
- png_debug(1, "in png_write_gAMA");
-
- /* file_gamma is saved in 1/100,000ths */
- png_save_uint_32(buf, (png_uint_32)file_gamma);
- png_write_complete_chunk(png_ptr, png_gAMA, buf, (png_size_t)4);
-}
-#endif
-
-#ifdef PNG_WRITE_sRGB_SUPPORTED
-/* Write a sRGB chunk */
-void /* PRIVATE */
-png_write_sRGB(png_structrp png_ptr, int srgb_intent)
-{
- png_byte buf[1];
-
- png_debug(1, "in png_write_sRGB");
-
- if (srgb_intent >= PNG_sRGB_INTENT_LAST)
- png_warning(png_ptr,
- "Invalid sRGB rendering intent specified");
-
- buf[0]=(png_byte)srgb_intent;
- png_write_complete_chunk(png_ptr, png_sRGB, buf, (png_size_t)1);
-}
-#endif
-
-#ifdef PNG_WRITE_iCCP_SUPPORTED
-/* Write an iCCP chunk */
-void /* PRIVATE */
-png_write_iCCP(png_structrp png_ptr, png_const_charp name,
- png_const_bytep profile)
-{
- png_uint_32 name_len;
- png_uint_32 profile_len;
- png_byte new_name[81]; /* 1 byte for the compression byte */
- compression_state comp;
-
- png_debug(1, "in png_write_iCCP");
-
- /* These are all internal problems: the profile should have been checked
- * before when it was stored.
- */
- if (profile == NULL)
- png_error(png_ptr, "No profile for iCCP chunk"); /* internal error */
-
- profile_len = png_get_uint_32(profile);
-
- if (profile_len < 132)
- png_error(png_ptr, "ICC profile too short");
-
- if (profile_len & 0x03)
- png_error(png_ptr, "ICC profile length invalid (not a multiple of 4)");
-
- {
- png_uint_32 embedded_profile_len = png_get_uint_32(profile);
-
- if (profile_len != embedded_profile_len)
- png_error(png_ptr, "Profile length does not match profile");
- }
-
- name_len = png_check_keyword(png_ptr, name, new_name);
-
- if (name_len == 0)
- png_error(png_ptr, "iCCP: invalid keyword");
-
- new_name[++name_len] = PNG_COMPRESSION_TYPE_BASE;
-
- /* Make sure we include the NULL after the name and the compression type */
- ++name_len;
-
- png_text_compress_init(&comp, profile, profile_len);
-
- /* Allow for keyword terminator and compression byte */
- if (png_text_compress(png_ptr, png_iCCP, &comp, name_len) != Z_OK)
- png_error(png_ptr, png_ptr->zstream.msg);
-
- png_write_chunk_header(png_ptr, png_iCCP, name_len + comp.output_len);
-
- png_write_chunk_data(png_ptr, new_name, name_len);
-
- png_write_compressed_data_out(png_ptr, &comp);
-
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_sPLT_SUPPORTED
-/* Write a sPLT chunk */
-void /* PRIVATE */
-png_write_sPLT(png_structrp png_ptr, png_const_sPLT_tp spalette)
-{
- png_uint_32 name_len;
- png_byte new_name[80];
- png_byte entrybuf[10];
- png_size_t entry_size = (spalette->depth == 8 ? 6 : 10);
- png_size_t palette_size = entry_size * spalette->nentries;
- png_sPLT_entryp ep;
-#ifndef PNG_POINTER_INDEXING_SUPPORTED
- int i;
-#endif
-
- png_debug(1, "in png_write_sPLT");
-
- name_len = png_check_keyword(png_ptr, spalette->name, new_name);
-
- if (name_len == 0)
- png_error(png_ptr, "sPLT: invalid keyword");
-
- /* Make sure we include the NULL after the name */
- png_write_chunk_header(png_ptr, png_sPLT,
- (png_uint_32)(name_len + 2 + palette_size));
-
- png_write_chunk_data(png_ptr, (png_bytep)new_name,
- (png_size_t)(name_len + 1));
-
- png_write_chunk_data(png_ptr, &spalette->depth, (png_size_t)1);
-
- /* Loop through each palette entry, writing appropriately */
-#ifdef PNG_POINTER_INDEXING_SUPPORTED
- for (ep = spalette->entries; ep<spalette->entries + spalette->nentries; ep++)
- {
- if (spalette->depth == 8)
- {
- entrybuf[0] = (png_byte)ep->red;
- entrybuf[1] = (png_byte)ep->green;
- entrybuf[2] = (png_byte)ep->blue;
- entrybuf[3] = (png_byte)ep->alpha;
- png_save_uint_16(entrybuf + 4, ep->frequency);
- }
-
- else
- {
- png_save_uint_16(entrybuf + 0, ep->red);
- png_save_uint_16(entrybuf + 2, ep->green);
- png_save_uint_16(entrybuf + 4, ep->blue);
- png_save_uint_16(entrybuf + 6, ep->alpha);
- png_save_uint_16(entrybuf + 8, ep->frequency);
- }
-
- png_write_chunk_data(png_ptr, entrybuf, entry_size);
- }
-#else
- ep=spalette->entries;
- for (i = 0; i>spalette->nentries; i++)
- {
- if (spalette->depth == 8)
- {
- entrybuf[0] = (png_byte)ep[i].red;
- entrybuf[1] = (png_byte)ep[i].green;
- entrybuf[2] = (png_byte)ep[i].blue;
- entrybuf[3] = (png_byte)ep[i].alpha;
- png_save_uint_16(entrybuf + 4, ep[i].frequency);
- }
-
- else
- {
- png_save_uint_16(entrybuf + 0, ep[i].red);
- png_save_uint_16(entrybuf + 2, ep[i].green);
- png_save_uint_16(entrybuf + 4, ep[i].blue);
- png_save_uint_16(entrybuf + 6, ep[i].alpha);
- png_save_uint_16(entrybuf + 8, ep[i].frequency);
- }
-
- png_write_chunk_data(png_ptr, entrybuf, entry_size);
- }
-#endif
-
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_sBIT_SUPPORTED
-/* Write the sBIT chunk */
-void /* PRIVATE */
-png_write_sBIT(png_structrp png_ptr, png_const_color_8p sbit, int color_type)
-{
- png_byte buf[4];
- png_size_t size;
-
- png_debug(1, "in png_write_sBIT");
-
- /* Make sure we don't depend upon the order of PNG_COLOR_8 */
- if (color_type & PNG_COLOR_MASK_COLOR)
- {
- png_byte maxbits;
-
- maxbits = (png_byte)(color_type==PNG_COLOR_TYPE_PALETTE ? 8 :
- png_ptr->usr_bit_depth);
-
- if (sbit->red == 0 || sbit->red > maxbits ||
- sbit->green == 0 || sbit->green > maxbits ||
- sbit->blue == 0 || sbit->blue > maxbits)
- {
- png_warning(png_ptr, "Invalid sBIT depth specified");
- return;
- }
-
- buf[0] = sbit->red;
- buf[1] = sbit->green;
- buf[2] = sbit->blue;
- size = 3;
- }
-
- else
- {
- if (sbit->gray == 0 || sbit->gray > png_ptr->usr_bit_depth)
- {
- png_warning(png_ptr, "Invalid sBIT depth specified");
- return;
- }
-
- buf[0] = sbit->gray;
- size = 1;
- }
-
- if (color_type & PNG_COLOR_MASK_ALPHA)
- {
- if (sbit->alpha == 0 || sbit->alpha > png_ptr->usr_bit_depth)
- {
- png_warning(png_ptr, "Invalid sBIT depth specified");
- return;
- }
-
- buf[size++] = sbit->alpha;
- }
-
- png_write_complete_chunk(png_ptr, png_sBIT, buf, size);
-}
-#endif
-
-#ifdef PNG_WRITE_cHRM_SUPPORTED
-/* Write the cHRM chunk */
-void /* PRIVATE */
-png_write_cHRM_fixed(png_structrp png_ptr, const png_xy *xy)
-{
- png_byte buf[32];
-
- png_debug(1, "in png_write_cHRM");
-
- /* Each value is saved in 1/100,000ths */
- png_save_int_32(buf, xy->whitex);
- png_save_int_32(buf + 4, xy->whitey);
-
- png_save_int_32(buf + 8, xy->redx);
- png_save_int_32(buf + 12, xy->redy);
-
- png_save_int_32(buf + 16, xy->greenx);
- png_save_int_32(buf + 20, xy->greeny);
-
- png_save_int_32(buf + 24, xy->bluex);
- png_save_int_32(buf + 28, xy->bluey);
-
- png_write_complete_chunk(png_ptr, png_cHRM, buf, 32);
-}
-#endif
-
-#ifdef PNG_WRITE_tRNS_SUPPORTED
-/* Write the tRNS chunk */
-void /* PRIVATE */
-png_write_tRNS(png_structrp png_ptr, png_const_bytep trans_alpha,
- png_const_color_16p tran, int num_trans, int color_type)
-{
- png_byte buf[6];
-
- png_debug(1, "in png_write_tRNS");
-
- if (color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (num_trans <= 0 || num_trans > (int)png_ptr->num_palette)
- {
- png_app_warning(png_ptr,
- "Invalid number of transparent colors specified");
- return;
- }
-
- /* Write the chunk out as it is */
- png_write_complete_chunk(png_ptr, png_tRNS, trans_alpha,
- (png_size_t)num_trans);
- }
-
- else if (color_type == PNG_COLOR_TYPE_GRAY)
- {
- /* One 16 bit value */
- if (tran->gray >= (1 << png_ptr->bit_depth))
- {
- png_app_warning(png_ptr,
- "Ignoring attempt to write tRNS chunk out-of-range for bit_depth");
-
- return;
- }
-
- png_save_uint_16(buf, tran->gray);
- png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)2);
- }
-
- else if (color_type == PNG_COLOR_TYPE_RGB)
- {
- /* Three 16 bit values */
- png_save_uint_16(buf, tran->red);
- png_save_uint_16(buf + 2, tran->green);
- png_save_uint_16(buf + 4, tran->blue);
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
-#else
- if (buf[0] | buf[2] | buf[4])
-#endif
- {
- png_app_warning(png_ptr,
- "Ignoring attempt to write 16-bit tRNS chunk when bit_depth is 8");
- return;
- }
-
- png_write_complete_chunk(png_ptr, png_tRNS, buf, (png_size_t)6);
- }
-
- else
- {
- png_app_warning(png_ptr, "Can't write tRNS with an alpha channel");
- }
-}
-#endif
-
-#ifdef PNG_WRITE_bKGD_SUPPORTED
-/* Write the background chunk */
-void /* PRIVATE */
-png_write_bKGD(png_structrp png_ptr, png_const_color_16p back, int color_type)
-{
- png_byte buf[6];
-
- png_debug(1, "in png_write_bKGD");
-
- if (color_type == PNG_COLOR_TYPE_PALETTE)
- {
- if (
-#ifdef PNG_MNG_FEATURES_SUPPORTED
- (png_ptr->num_palette ||
- (!(png_ptr->mng_features_permitted & PNG_FLAG_MNG_EMPTY_PLTE))) &&
-#endif
- back->index >= png_ptr->num_palette)
- {
- png_warning(png_ptr, "Invalid background palette index");
- return;
- }
-
- buf[0] = back->index;
- png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)1);
- }
-
- else if (color_type & PNG_COLOR_MASK_COLOR)
- {
- png_save_uint_16(buf, back->red);
- png_save_uint_16(buf + 2, back->green);
- png_save_uint_16(buf + 4, back->blue);
-#ifdef PNG_WRITE_16BIT_SUPPORTED
- if (png_ptr->bit_depth == 8 && (buf[0] | buf[2] | buf[4]))
-#else
- if (buf[0] | buf[2] | buf[4])
-#endif
- {
- png_warning(png_ptr,
- "Ignoring attempt to write 16-bit bKGD chunk when bit_depth is 8");
-
- return;
- }
-
- png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)6);
- }
-
- else
- {
- if (back->gray >= (1 << png_ptr->bit_depth))
- {
- png_warning(png_ptr,
- "Ignoring attempt to write bKGD chunk out-of-range for bit_depth");
-
- return;
- }
-
- png_save_uint_16(buf, back->gray);
- png_write_complete_chunk(png_ptr, png_bKGD, buf, (png_size_t)2);
- }
-}
-#endif
-
-#ifdef PNG_WRITE_hIST_SUPPORTED
-/* Write the histogram */
-void /* PRIVATE */
-png_write_hIST(png_structrp png_ptr, png_const_uint_16p hist, int num_hist)
-{
- int i;
- png_byte buf[3];
-
- png_debug(1, "in png_write_hIST");
-
- if (num_hist > (int)png_ptr->num_palette)
- {
- png_debug2(3, "num_hist = %d, num_palette = %d", num_hist,
- png_ptr->num_palette);
-
- png_warning(png_ptr, "Invalid number of histogram entries specified");
- return;
- }
-
- png_write_chunk_header(png_ptr, png_hIST, (png_uint_32)(num_hist * 2));
-
- for (i = 0; i < num_hist; i++)
- {
- png_save_uint_16(buf, hist[i]);
- png_write_chunk_data(png_ptr, buf, (png_size_t)2);
- }
-
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_tEXt_SUPPORTED
-/* Write a tEXt chunk */
-void /* PRIVATE */
-png_write_tEXt(png_structrp png_ptr, png_const_charp key, png_const_charp text,
- png_size_t text_len)
-{
- png_uint_32 key_len;
- png_byte new_key[80];
-
- png_debug(1, "in png_write_tEXt");
-
- key_len = png_check_keyword(png_ptr, key, new_key);
-
- if (key_len == 0)
- png_error(png_ptr, "tEXt: invalid keyword");
-
- if (text == NULL || *text == '\0')
- text_len = 0;
-
- else
- text_len = strlen(text);
-
- if (text_len > PNG_UINT_31_MAX - (key_len+1))
- png_error(png_ptr, "tEXt: text too long");
-
- /* Make sure we include the 0 after the key */
- png_write_chunk_header(png_ptr, png_tEXt,
- (png_uint_32)/*checked above*/(key_len + text_len + 1));
- /*
- * We leave it to the application to meet PNG-1.0 requirements on the
- * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
- * any non-Latin-1 characters except for NEWLINE. ISO PNG will forbid them.
- * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
- */
- png_write_chunk_data(png_ptr, new_key, key_len + 1);
-
- if (text_len)
- png_write_chunk_data(png_ptr, (png_const_bytep)text, text_len);
-
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_zTXt_SUPPORTED
-/* Write a compressed text chunk */
-void /* PRIVATE */
-png_write_zTXt(png_structrp png_ptr, png_const_charp key, png_const_charp text,
- png_size_t text_len, int compression)
-{
- png_uint_32 key_len;
- png_byte new_key[81];
- compression_state comp;
-
- png_debug(1, "in png_write_zTXt");
- PNG_UNUSED(text_len) /* Always use strlen */
-
- if (compression == PNG_TEXT_COMPRESSION_NONE)
- {
- png_write_tEXt(png_ptr, key, text, 0);
- return;
- }
-
- if (compression != PNG_TEXT_COMPRESSION_zTXt)
- png_error(png_ptr, "zTXt: invalid compression type");
-
- key_len = png_check_keyword(png_ptr, key, new_key);
-
- if (key_len == 0)
- png_error(png_ptr, "zTXt: invalid keyword");
-
- /* Add the compression method and 1 for the keyword separator. */
- new_key[++key_len] = PNG_COMPRESSION_TYPE_BASE;
- ++key_len;
-
- /* Compute the compressed data; do it now for the length */
- png_text_compress_init(&comp, (png_const_bytep)text,
- text == NULL ? 0 : strlen(text));
-
- if (png_text_compress(png_ptr, png_zTXt, &comp, key_len) != Z_OK)
- png_error(png_ptr, png_ptr->zstream.msg);
-
- /* Write start of chunk */
- png_write_chunk_header(png_ptr, png_zTXt, key_len + comp.output_len);
-
- /* Write key */
- png_write_chunk_data(png_ptr, new_key, key_len);
-
- /* Write the compressed data */
- png_write_compressed_data_out(png_ptr, &comp);
-
- /* Close the chunk */
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_iTXt_SUPPORTED
-/* Write an iTXt chunk */
-void /* PRIVATE */
-png_write_iTXt(png_structrp png_ptr, int compression, png_const_charp key,
- png_const_charp lang, png_const_charp lang_key, png_const_charp text)
-{
- png_uint_32 key_len, prefix_len;
- png_size_t lang_len, lang_key_len;
- png_byte new_key[82];
- compression_state comp;
-
- png_debug(1, "in png_write_iTXt");
-
- key_len = png_check_keyword(png_ptr, key, new_key);
-
- if (key_len == 0)
- png_error(png_ptr, "iTXt: invalid keyword");
-
- /* Set the compression flag */
- switch (compression)
- {
- case PNG_ITXT_COMPRESSION_NONE:
- case PNG_TEXT_COMPRESSION_NONE:
- compression = new_key[++key_len] = 0; /* no compression */
- break;
-
- case PNG_TEXT_COMPRESSION_zTXt:
- case PNG_ITXT_COMPRESSION_zTXt:
- compression = new_key[++key_len] = 1; /* compressed */
- break;
-
- default:
- png_error(png_ptr, "iTXt: invalid compression");
- }
-
- new_key[++key_len] = PNG_COMPRESSION_TYPE_BASE;
- ++key_len; /* for the keywod separator */
-
- /* We leave it to the application to meet PNG-1.0 requirements on the
- * contents of the text. PNG-1.0 through PNG-1.2 discourage the use of
- * any non-Latin-1 characters except for NEWLINE. ISO PNG, however,
- * specifies that the text is UTF-8 and this really doesn't require any
- * checking.
- *
- * The NUL character is forbidden by PNG-1.0 through PNG-1.2 and ISO PNG.
- *
- * TODO: validate the language tag correctly (see the spec.)
- */
- if (lang == NULL) lang = ""; /* empty language is valid */
- lang_len = strlen(lang)+1;
- if (lang_key == NULL) lang_key = ""; /* may be empty */
- lang_key_len = strlen(lang_key)+1;
- if (text == NULL) text = ""; /* may be empty */
-
- prefix_len = key_len;
- if (lang_len > PNG_UINT_31_MAX-prefix_len)
- prefix_len = PNG_UINT_31_MAX;
- else
- prefix_len = (png_uint_32)(prefix_len + lang_len);
-
- if (lang_key_len > PNG_UINT_31_MAX-prefix_len)
- prefix_len = PNG_UINT_31_MAX;
- else
- prefix_len = (png_uint_32)(prefix_len + lang_key_len);
-
- png_text_compress_init(&comp, (png_const_bytep)text, strlen(text));
-
- if (compression)
- {
- if (png_text_compress(png_ptr, png_iTXt, &comp, prefix_len) != Z_OK)
- png_error(png_ptr, png_ptr->zstream.msg);
- }
-
- else
- {
- if (comp.input_len > PNG_UINT_31_MAX-prefix_len)
- png_error(png_ptr, "iTXt: uncompressed text too long");
-
- /* So the string will fit in a chunk: */
- comp.output_len = (png_uint_32)/*SAFE*/comp.input_len;
- }
-
- png_write_chunk_header(png_ptr, png_iTXt, comp.output_len + prefix_len);
-
- png_write_chunk_data(png_ptr, new_key, key_len);
-
- png_write_chunk_data(png_ptr, (png_const_bytep)lang, lang_len);
-
- png_write_chunk_data(png_ptr, (png_const_bytep)lang_key, lang_key_len);
-
- if (compression)
- png_write_compressed_data_out(png_ptr, &comp);
-
- else
- png_write_chunk_data(png_ptr, (png_const_bytep)text, comp.input_len);
-
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_oFFs_SUPPORTED
-/* Write the oFFs chunk */
-void /* PRIVATE */
-png_write_oFFs(png_structrp png_ptr, png_int_32 x_offset, png_int_32 y_offset,
- int unit_type)
-{
- png_byte buf[9];
-
- png_debug(1, "in png_write_oFFs");
-
- if (unit_type >= PNG_OFFSET_LAST)
- png_warning(png_ptr, "Unrecognized unit type for oFFs chunk");
-
- png_save_int_32(buf, x_offset);
- png_save_int_32(buf + 4, y_offset);
- buf[8] = (png_byte)unit_type;
-
- png_write_complete_chunk(png_ptr, png_oFFs, buf, (png_size_t)9);
-}
-#endif
-#ifdef PNG_WRITE_pCAL_SUPPORTED
-/* Write the pCAL chunk (described in the PNG extensions document) */
-void /* PRIVATE */
-png_write_pCAL(png_structrp png_ptr, png_charp purpose, png_int_32 X0,
- png_int_32 X1, int type, int nparams, png_const_charp units,
- png_charpp params)
-{
- png_uint_32 purpose_len;
- png_size_t units_len, total_len;
- png_size_tp params_len;
- png_byte buf[10];
- png_byte new_purpose[80];
- int i;
-
- png_debug1(1, "in png_write_pCAL (%d parameters)", nparams);
-
- if (type >= PNG_EQUATION_LAST)
- png_error(png_ptr, "Unrecognized equation type for pCAL chunk");
-
- purpose_len = png_check_keyword(png_ptr, purpose, new_purpose);
-
- if (purpose_len == 0)
- png_error(png_ptr, "pCAL: invalid keyword");
-
- ++purpose_len; /* terminator */
-
- png_debug1(3, "pCAL purpose length = %d", (int)purpose_len);
- units_len = strlen(units) + (nparams == 0 ? 0 : 1);
- png_debug1(3, "pCAL units length = %d", (int)units_len);
- total_len = purpose_len + units_len + 10;
-
- params_len = (png_size_tp)png_malloc(png_ptr,
- (png_alloc_size_t)(nparams * (sizeof (png_size_t))));
-
- /* Find the length of each parameter, making sure we don't count the
- * null terminator for the last parameter.
- */
- for (i = 0; i < nparams; i++)
- {
- params_len[i] = strlen(params[i]) + (i == nparams - 1 ? 0 : 1);
- png_debug2(3, "pCAL parameter %d length = %lu", i,
- (unsigned long)params_len[i]);
- total_len += params_len[i];
- }
-
- png_debug1(3, "pCAL total length = %d", (int)total_len);
- png_write_chunk_header(png_ptr, png_pCAL, (png_uint_32)total_len);
- png_write_chunk_data(png_ptr, new_purpose, purpose_len);
- png_save_int_32(buf, X0);
- png_save_int_32(buf + 4, X1);
- buf[8] = (png_byte)type;
- buf[9] = (png_byte)nparams;
- png_write_chunk_data(png_ptr, buf, (png_size_t)10);
- png_write_chunk_data(png_ptr, (png_const_bytep)units, (png_size_t)units_len);
-
- for (i = 0; i < nparams; i++)
- {
- png_write_chunk_data(png_ptr, (png_const_bytep)params[i], params_len[i]);
- }
-
- png_free(png_ptr, params_len);
- png_write_chunk_end(png_ptr);
-}
-#endif
-
-#ifdef PNG_WRITE_sCAL_SUPPORTED
-/* Write the sCAL chunk */
-void /* PRIVATE */
-png_write_sCAL_s(png_structrp png_ptr, int unit, png_const_charp width,
- png_const_charp height)
-{
- png_byte buf[64];
- png_size_t wlen, hlen, total_len;
-
- png_debug(1, "in png_write_sCAL_s");
-
- wlen = strlen(width);
- hlen = strlen(height);
- total_len = wlen + hlen + 2;
-
- if (total_len > 64)
- {
- png_warning(png_ptr, "Can't write sCAL (buffer too small)");
- return;
- }
-
- buf[0] = (png_byte)unit;
- memcpy(buf + 1, width, wlen + 1); /* Append the '\0' here */
- memcpy(buf + wlen + 2, height, hlen); /* Do NOT append the '\0' here */
-
- png_debug1(3, "sCAL total length = %u", (unsigned int)total_len);
- png_write_complete_chunk(png_ptr, png_sCAL, buf, total_len);
-}
-#endif
-
-#ifdef PNG_WRITE_pHYs_SUPPORTED
-/* Write the pHYs chunk */
-void /* PRIVATE */
-png_write_pHYs(png_structrp png_ptr, png_uint_32 x_pixels_per_unit,
- png_uint_32 y_pixels_per_unit,
- int unit_type)
-{
- png_byte buf[9];
-
- png_debug(1, "in png_write_pHYs");
-
- if (unit_type >= PNG_RESOLUTION_LAST)
- png_warning(png_ptr, "Unrecognized unit type for pHYs chunk");
-
- png_save_uint_32(buf, x_pixels_per_unit);
- png_save_uint_32(buf + 4, y_pixels_per_unit);
- buf[8] = (png_byte)unit_type;
-
- png_write_complete_chunk(png_ptr, png_pHYs, buf, (png_size_t)9);
-}
-#endif
-
-#ifdef PNG_WRITE_tIME_SUPPORTED
-/* Write the tIME chunk. Use either png_convert_from_struct_tm()
- * or png_convert_from_time_t(), or fill in the structure yourself.
- */
-void /* PRIVATE */
-png_write_tIME(png_structrp png_ptr, png_const_timep mod_time)
-{
- png_byte buf[7];
-
- png_debug(1, "in png_write_tIME");
-
- if (mod_time->month > 12 || mod_time->month < 1 ||
- mod_time->day > 31 || mod_time->day < 1 ||
- mod_time->hour > 23 || mod_time->second > 60)
- {
- png_warning(png_ptr, "Invalid time specified for tIME chunk");
- return;
- }
-
- png_save_uint_16(buf, mod_time->year);
- buf[2] = mod_time->month;
- buf[3] = mod_time->day;
- buf[4] = mod_time->hour;
- buf[5] = mod_time->minute;
- buf[6] = mod_time->second;
-
- png_write_complete_chunk(png_ptr, png_tIME, buf, (png_size_t)7);
-}
-#endif
-
-/* Initializes the row writing capability of libpng */
-void /* PRIVATE */
-png_write_start_row(png_structrp png_ptr)
-{
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
- /* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
-
- /* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-
- /* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
-
- /* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
-
- png_alloc_size_t buf_size;
- int usr_pixel_depth;
-
- png_debug(1, "in png_write_start_row");
-
- usr_pixel_depth = png_ptr->usr_channels * png_ptr->usr_bit_depth;
- buf_size = PNG_ROWBYTES(usr_pixel_depth, png_ptr->width) + 1;
-
- /* 1.5.6: added to allow checking in the row write code. */
- png_ptr->transformed_pixel_depth = png_ptr->pixel_depth;
- png_ptr->maximum_pixel_depth = (png_byte)usr_pixel_depth;
-
- /* Set up row buffer */
- png_ptr->row_buf = (png_bytep)png_malloc(png_ptr, buf_size);
-
- png_ptr->row_buf[0] = PNG_FILTER_VALUE_NONE;
-
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- /* Set up filtering buffer, if using this filter */
- if (png_ptr->do_filter & PNG_FILTER_SUB)
- {
- png_ptr->sub_row = (png_bytep)png_malloc(png_ptr, png_ptr->rowbytes + 1);
-
- png_ptr->sub_row[0] = PNG_FILTER_VALUE_SUB;
- }
-
- /* We only need to keep the previous row if we are using one of these. */
- if (png_ptr->do_filter & (PNG_FILTER_AVG | PNG_FILTER_UP | PNG_FILTER_PAETH))
- {
- /* Set up previous row buffer */
- png_ptr->prev_row = (png_bytep)png_calloc(png_ptr, buf_size);
-
- if (png_ptr->do_filter & PNG_FILTER_UP)
- {
- png_ptr->up_row = (png_bytep)png_malloc(png_ptr,
- png_ptr->rowbytes + 1);
-
- png_ptr->up_row[0] = PNG_FILTER_VALUE_UP;
- }
-
- if (png_ptr->do_filter & PNG_FILTER_AVG)
- {
- png_ptr->avg_row = (png_bytep)png_malloc(png_ptr,
- png_ptr->rowbytes + 1);
-
- png_ptr->avg_row[0] = PNG_FILTER_VALUE_AVG;
- }
-
- if (png_ptr->do_filter & PNG_FILTER_PAETH)
- {
- png_ptr->paeth_row = (png_bytep)png_malloc(png_ptr,
- png_ptr->rowbytes + 1);
-
- png_ptr->paeth_row[0] = PNG_FILTER_VALUE_PAETH;
- }
- }
-#endif /* PNG_WRITE_FILTER_SUPPORTED */
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* If interlaced, we need to set up width and height of pass */
- if (png_ptr->interlaced)
- {
- if (!(png_ptr->transformations & PNG_INTERLACE))
- {
- png_ptr->num_rows = (png_ptr->height + png_pass_yinc[0] - 1 -
- png_pass_ystart[0]) / png_pass_yinc[0];
-
- png_ptr->usr_width = (png_ptr->width + png_pass_inc[0] - 1 -
- png_pass_start[0]) / png_pass_inc[0];
- }
-
- else
- {
- png_ptr->num_rows = png_ptr->height;
- png_ptr->usr_width = png_ptr->width;
- }
- }
-
- else
-#endif
- {
- png_ptr->num_rows = png_ptr->height;
- png_ptr->usr_width = png_ptr->width;
- }
-}
-
-/* Internal use only. Called when finished processing a row of data. */
-void /* PRIVATE */
-png_write_finish_row(png_structrp png_ptr)
-{
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
- /* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
-
- /* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-
- /* Start of interlace block in the y direction */
- static PNG_CONST png_byte png_pass_ystart[7] = {0, 0, 4, 0, 2, 0, 1};
-
- /* Offset to next interlace block in the y direction */
- static PNG_CONST png_byte png_pass_yinc[7] = {8, 8, 8, 4, 4, 2, 2};
-#endif
-
- png_debug(1, "in png_write_finish_row");
-
- /* Next row */
- png_ptr->row_number++;
-
- /* See if we are done */
- if (png_ptr->row_number < png_ptr->num_rows)
- return;
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
- /* If interlaced, go to next pass */
- if (png_ptr->interlaced)
- {
- png_ptr->row_number = 0;
- if (png_ptr->transformations & PNG_INTERLACE)
- {
- png_ptr->pass++;
- }
-
- else
- {
- /* Loop until we find a non-zero width or height pass */
- do
- {
- png_ptr->pass++;
-
- if (png_ptr->pass >= 7)
- break;
-
- png_ptr->usr_width = (png_ptr->width +
- png_pass_inc[png_ptr->pass] - 1 -
- png_pass_start[png_ptr->pass]) /
- png_pass_inc[png_ptr->pass];
-
- png_ptr->num_rows = (png_ptr->height +
- png_pass_yinc[png_ptr->pass] - 1 -
- png_pass_ystart[png_ptr->pass]) /
- png_pass_yinc[png_ptr->pass];
-
- if (png_ptr->transformations & PNG_INTERLACE)
- break;
-
- } while (png_ptr->usr_width == 0 || png_ptr->num_rows == 0);
-
- }
-
- /* Reset the row above the image for the next pass */
- if (png_ptr->pass < 7)
- {
- if (png_ptr->prev_row != NULL)
- memset(png_ptr->prev_row, 0,
- (png_size_t)(PNG_ROWBYTES(png_ptr->usr_channels*
- png_ptr->usr_bit_depth, png_ptr->width)) + 1);
-
- return;
- }
- }
-#endif
-
- /* If we get here, we've just written the last row, so we need
- to flush the compressor */
- png_compress_IDAT(png_ptr, NULL, 0, Z_FINISH);
-}
-
-#ifdef PNG_WRITE_INTERLACING_SUPPORTED
-/* Pick out the correct pixels for the interlace pass.
- * The basic idea here is to go through the row with a source
- * pointer and a destination pointer (sp and dp), and copy the
- * correct pixels for the pass. As the row gets compacted,
- * sp will always be >= dp, so we should never overwrite anything.
- * See the default: case for the easiest code to understand.
- */
-void /* PRIVATE */
-png_do_write_interlace(png_row_infop row_info, png_bytep row, int pass)
-{
- /* Arrays to facilitate easy interlacing - use pass (0 - 6) as index */
-
- /* Start of interlace block */
- static PNG_CONST png_byte png_pass_start[7] = {0, 4, 0, 2, 0, 1, 0};
-
- /* Offset to next interlace block */
- static PNG_CONST png_byte png_pass_inc[7] = {8, 8, 4, 4, 2, 2, 1};
-
- png_debug(1, "in png_do_write_interlace");
-
- /* We don't have to do anything on the last pass (6) */
- if (pass < 6)
- {
- /* Each pixel depth is handled separately */
- switch (row_info->pixel_depth)
- {
- case 1:
- {
- png_bytep sp;
- png_bytep dp;
- int shift;
- int d;
- int value;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- dp = row;
- d = 0;
- shift = 7;
-
- for (i = png_pass_start[pass]; i < row_width;
- i += png_pass_inc[pass])
- {
- sp = row + (png_size_t)(i >> 3);
- value = (int)(*sp >> (7 - (int)(i & 0x07))) & 0x01;
- d |= (value << shift);
-
- if (shift == 0)
- {
- shift = 7;
- *dp++ = (png_byte)d;
- d = 0;
- }
-
- else
- shift--;
-
- }
- if (shift != 7)
- *dp = (png_byte)d;
-
- break;
- }
-
- case 2:
- {
- png_bytep sp;
- png_bytep dp;
- int shift;
- int d;
- int value;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- dp = row;
- shift = 6;
- d = 0;
-
- for (i = png_pass_start[pass]; i < row_width;
- i += png_pass_inc[pass])
- {
- sp = row + (png_size_t)(i >> 2);
- value = (*sp >> ((3 - (int)(i & 0x03)) << 1)) & 0x03;
- d |= (value << shift);
-
- if (shift == 0)
- {
- shift = 6;
- *dp++ = (png_byte)d;
- d = 0;
- }
-
- else
- shift -= 2;
- }
- if (shift != 6)
- *dp = (png_byte)d;
-
- break;
- }
-
- case 4:
- {
- png_bytep sp;
- png_bytep dp;
- int shift;
- int d;
- int value;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
-
- dp = row;
- shift = 4;
- d = 0;
- for (i = png_pass_start[pass]; i < row_width;
- i += png_pass_inc[pass])
- {
- sp = row + (png_size_t)(i >> 1);
- value = (*sp >> ((1 - (int)(i & 0x01)) << 2)) & 0x0f;
- d |= (value << shift);
-
- if (shift == 0)
- {
- shift = 4;
- *dp++ = (png_byte)d;
- d = 0;
- }
-
- else
- shift -= 4;
- }
- if (shift != 4)
- *dp = (png_byte)d;
-
- break;
- }
-
- default:
- {
- png_bytep sp;
- png_bytep dp;
- png_uint_32 i;
- png_uint_32 row_width = row_info->width;
- png_size_t pixel_bytes;
-
- /* Start at the beginning */
- dp = row;
-
- /* Find out how many bytes each pixel takes up */
- pixel_bytes = (row_info->pixel_depth >> 3);
-
- /* Loop through the row, only looking at the pixels that matter */
- for (i = png_pass_start[pass]; i < row_width;
- i += png_pass_inc[pass])
- {
- /* Find out where the original pixel is */
- sp = row + (png_size_t)i * pixel_bytes;
-
- /* Move the pixel */
- if (dp != sp)
- memcpy(dp, sp, pixel_bytes);
-
- /* Next pixel */
- dp += pixel_bytes;
- }
- break;
- }
- }
- /* Set new row width */
- row_info->width = (row_info->width +
- png_pass_inc[pass] - 1 -
- png_pass_start[pass]) /
- png_pass_inc[pass];
-
- row_info->rowbytes = PNG_ROWBYTES(row_info->pixel_depth,
- row_info->width);
- }
-}
-#endif
-
-/* This filters the row, chooses which filter to use, if it has not already
- * been specified by the application, and then writes the row out with the
- * chosen filter.
- */
-static void png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
- png_size_t row_bytes);
-
-#define PNG_MAXSUM (((png_uint_32)(-1)) >> 1)
-#define PNG_HISHIFT 10
-#define PNG_LOMASK ((png_uint_32)0xffffL)
-#define PNG_HIMASK ((png_uint_32)(~PNG_LOMASK >> PNG_HISHIFT))
-void /* PRIVATE */
-png_write_find_filter(png_structrp png_ptr, png_row_infop row_info)
-{
- png_bytep best_row;
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- png_bytep prev_row, row_buf;
- png_uint_32 mins, bpp;
- png_byte filter_to_do = png_ptr->do_filter;
- png_size_t row_bytes = row_info->rowbytes;
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- int num_p_filters = png_ptr->num_prev_filters;
-#endif
-
- png_debug(1, "in png_write_find_filter");
-
-#ifndef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->row_number == 0 && filter_to_do == PNG_ALL_FILTERS)
- {
- /* These will never be selected so we need not test them. */
- filter_to_do &= ~(PNG_FILTER_UP | PNG_FILTER_PAETH);
- }
-#endif
-
- /* Find out how many bytes offset each pixel is */
- bpp = (row_info->pixel_depth + 7) >> 3;
-
- prev_row = png_ptr->prev_row;
-#endif
- best_row = png_ptr->row_buf;
-#ifdef PNG_WRITE_FILTER_SUPPORTED
- row_buf = best_row;
- mins = PNG_MAXSUM;
-
- /* The prediction method we use is to find which method provides the
- * smallest value when summing the absolute values of the distances
- * from zero, using anything >= 128 as negative numbers. This is known
- * as the "minimum sum of absolute differences" heuristic. Other
- * heuristics are the "weighted minimum sum of absolute differences"
- * (experimental and can in theory improve compression), and the "zlib
- * predictive" method (not implemented yet), which does test compressions
- * of lines using different filter methods, and then chooses the
- * (series of) filter(s) that give minimum compressed data size (VERY
- * computationally expensive).
- *
- * GRR 980525: consider also
- *
- * (1) minimum sum of absolute differences from running average (i.e.,
- * keep running sum of non-absolute differences & count of bytes)
- * [track dispersion, too? restart average if dispersion too large?]
- *
- * (1b) minimum sum of absolute differences from sliding average, probably
- * with window size <= deflate window (usually 32K)
- *
- * (2) minimum sum of squared differences from zero or running average
- * (i.e., ~ root-mean-square approach)
- */
-
-
- /* We don't need to test the 'no filter' case if this is the only filter
- * that has been chosen, as it doesn't actually do anything to the data.
- */
- if ((filter_to_do & PNG_FILTER_NONE) && filter_to_do != PNG_FILTER_NONE)
- {
- png_bytep rp;
- png_uint_32 sum = 0;
- png_size_t i;
- int v;
-
- for (i = 0, rp = row_buf + 1; i < row_bytes; i++, rp++)
- {
- v = *rp;
- sum += (v < 128) ? v : 256 - v;
- }
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- png_uint_32 sumhi, sumlo;
- int j;
- sumlo = sum & PNG_LOMASK;
- sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK; /* Gives us some footroom */
-
- /* Reduce the sum if we match any of the previous rows */
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
- {
- sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- /* Factor in the cost of this filter (this is here for completeness,
- * but it makes no sense to have a "cost" for the NONE filter, as
- * it has the minimum possible computational cost - none).
- */
- sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
- PNG_COST_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_NONE]) >>
- PNG_COST_SHIFT;
-
- if (sumhi > PNG_HIMASK)
- sum = PNG_MAXSUM;
-
- else
- sum = (sumhi << PNG_HISHIFT) + sumlo;
- }
-#endif
- mins = sum;
- }
-
- /* Sub filter */
- if (filter_to_do == PNG_FILTER_SUB)
- /* It's the only filter so no testing is needed */
- {
- png_bytep rp, lp, dp;
- png_size_t i;
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
- i++, rp++, dp++)
- {
- *dp = *rp;
- }
-
- for (lp = row_buf + 1; i < row_bytes;
- i++, rp++, lp++, dp++)
- {
- *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
- }
-
- best_row = png_ptr->sub_row;
- }
-
- else if (filter_to_do & PNG_FILTER_SUB)
- {
- png_bytep rp, dp, lp;
- png_uint_32 sum = 0, lmins = mins;
- png_size_t i;
- int v;
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- /* We temporarily increase the "minimum sum" by the factor we
- * would reduce the sum of this filter, so that we can do the
- * early exit comparison without scaling the sum each time.
- */
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 lmhi, lmlo;
- lmlo = lmins & PNG_LOMASK;
- lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
- {
- lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
-
- if (lmhi > PNG_HIMASK)
- lmins = PNG_MAXSUM;
-
- else
- lmins = (lmhi << PNG_HISHIFT) + lmlo;
- }
-#endif
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->sub_row + 1; i < bpp;
- i++, rp++, dp++)
- {
- v = *dp = *rp;
-
- sum += (v < 128) ? v : 256 - v;
- }
-
- for (lp = row_buf + 1; i < row_bytes;
- i++, rp++, lp++, dp++)
- {
- v = *dp = (png_byte)(((int)*rp - (int)*lp) & 0xff);
-
- sum += (v < 128) ? v : 256 - v;
-
- if (sum > lmins) /* We are already worse, don't continue. */
- break;
- }
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 sumhi, sumlo;
- sumlo = sum & PNG_LOMASK;
- sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_SUB)
- {
- sumlo = (sumlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- sumhi = (sumhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- sumlo = (sumlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
-
- sumhi = (sumhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_SUB]) >>
- PNG_COST_SHIFT;
-
- if (sumhi > PNG_HIMASK)
- sum = PNG_MAXSUM;
-
- else
- sum = (sumhi << PNG_HISHIFT) + sumlo;
- }
-#endif
-
- if (sum < mins)
- {
- mins = sum;
- best_row = png_ptr->sub_row;
- }
- }
-
- /* Up filter */
- if (filter_to_do == PNG_FILTER_UP)
- {
- png_bytep rp, dp, pp;
- png_size_t i;
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
- pp = prev_row + 1; i < row_bytes;
- i++, rp++, pp++, dp++)
- {
- *dp = (png_byte)(((int)*rp - (int)*pp) & 0xff);
- }
-
- best_row = png_ptr->up_row;
- }
-
- else if (filter_to_do & PNG_FILTER_UP)
- {
- png_bytep rp, dp, pp;
- png_uint_32 sum = 0, lmins = mins;
- png_size_t i;
- int v;
-
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 lmhi, lmlo;
- lmlo = lmins & PNG_LOMASK;
- lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
- {
- lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
-
- if (lmhi > PNG_HIMASK)
- lmins = PNG_MAXSUM;
-
- else
- lmins = (lmhi << PNG_HISHIFT) + lmlo;
- }
-#endif
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->up_row + 1,
- pp = prev_row + 1; i < row_bytes; i++)
- {
- v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
-
- sum += (v < 128) ? v : 256 - v;
-
- if (sum > lmins) /* We are already worse, don't continue. */
- break;
- }
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 sumhi, sumlo;
- sumlo = sum & PNG_LOMASK;
- sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_UP)
- {
- sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_UP]) >>
- PNG_COST_SHIFT;
-
- if (sumhi > PNG_HIMASK)
- sum = PNG_MAXSUM;
-
- else
- sum = (sumhi << PNG_HISHIFT) + sumlo;
- }
-#endif
-
- if (sum < mins)
- {
- mins = sum;
- best_row = png_ptr->up_row;
- }
- }
-
- /* Avg filter */
- if (filter_to_do == PNG_FILTER_AVG)
- {
- png_bytep rp, dp, pp, lp;
- png_uint_32 i;
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
- pp = prev_row + 1; i < bpp; i++)
- {
- *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
- }
-
- for (lp = row_buf + 1; i < row_bytes; i++)
- {
- *dp++ = (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2))
- & 0xff);
- }
- best_row = png_ptr->avg_row;
- }
-
- else if (filter_to_do & PNG_FILTER_AVG)
- {
- png_bytep rp, dp, pp, lp;
- png_uint_32 sum = 0, lmins = mins;
- png_size_t i;
- int v;
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 lmhi, lmlo;
- lmlo = lmins & PNG_LOMASK;
- lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_AVG)
- {
- lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
-
- if (lmhi > PNG_HIMASK)
- lmins = PNG_MAXSUM;
-
- else
- lmins = (lmhi << PNG_HISHIFT) + lmlo;
- }
-#endif
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->avg_row + 1,
- pp = prev_row + 1; i < bpp; i++)
- {
- v = *dp++ = (png_byte)(((int)*rp++ - ((int)*pp++ / 2)) & 0xff);
-
- sum += (v < 128) ? v : 256 - v;
- }
-
- for (lp = row_buf + 1; i < row_bytes; i++)
- {
- v = *dp++ =
- (png_byte)(((int)*rp++ - (((int)*pp++ + (int)*lp++) / 2)) & 0xff);
-
- sum += (v < 128) ? v : 256 - v;
-
- if (sum > lmins) /* We are already worse, don't continue. */
- break;
- }
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 sumhi, sumlo;
- sumlo = sum & PNG_LOMASK;
- sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_NONE)
- {
- sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_AVG]) >>
- PNG_COST_SHIFT;
-
- if (sumhi > PNG_HIMASK)
- sum = PNG_MAXSUM;
-
- else
- sum = (sumhi << PNG_HISHIFT) + sumlo;
- }
-#endif
-
- if (sum < mins)
- {
- mins = sum;
- best_row = png_ptr->avg_row;
- }
- }
-
- /* Paeth filter */
- if (filter_to_do == PNG_FILTER_PAETH)
- {
- png_bytep rp, dp, pp, cp, lp;
- png_size_t i;
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
- pp = prev_row + 1; i < bpp; i++)
- {
- *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
- }
-
- for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)
- {
- int a, b, c, pa, pb, pc, p;
-
- b = *pp++;
- c = *cp++;
- a = *lp++;
-
- p = b - c;
- pc = a - c;
-
-#ifdef PNG_USE_ABS
- pa = abs(p);
- pb = abs(pc);
- pc = abs(p + pc);
-#else
- pa = p < 0 ? -p : p;
- pb = pc < 0 ? -pc : pc;
- pc = (p + pc) < 0 ? -(p + pc) : p + pc;
-#endif
-
- p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
-
- *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
- }
- best_row = png_ptr->paeth_row;
- }
-
- else if (filter_to_do & PNG_FILTER_PAETH)
- {
- png_bytep rp, dp, pp, cp, lp;
- png_uint_32 sum = 0, lmins = mins;
- png_size_t i;
- int v;
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 lmhi, lmlo;
- lmlo = lmins & PNG_LOMASK;
- lmhi = (lmins >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
- {
- lmlo = (lmlo * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- lmlo = (lmlo * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
-
- lmhi = (lmhi * png_ptr->inv_filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
-
- if (lmhi > PNG_HIMASK)
- lmins = PNG_MAXSUM;
-
- else
- lmins = (lmhi << PNG_HISHIFT) + lmlo;
- }
-#endif
-
- for (i = 0, rp = row_buf + 1, dp = png_ptr->paeth_row + 1,
- pp = prev_row + 1; i < bpp; i++)
- {
- v = *dp++ = (png_byte)(((int)*rp++ - (int)*pp++) & 0xff);
-
- sum += (v < 128) ? v : 256 - v;
- }
-
- for (lp = row_buf + 1, cp = prev_row + 1; i < row_bytes; i++)
- {
- int a, b, c, pa, pb, pc, p;
-
- b = *pp++;
- c = *cp++;
- a = *lp++;
-
-#ifndef PNG_SLOW_PAETH
- p = b - c;
- pc = a - c;
-#ifdef PNG_USE_ABS
- pa = abs(p);
- pb = abs(pc);
- pc = abs(p + pc);
-#else
- pa = p < 0 ? -p : p;
- pb = pc < 0 ? -pc : pc;
- pc = (p + pc) < 0 ? -(p + pc) : p + pc;
-#endif
- p = (pa <= pb && pa <=pc) ? a : (pb <= pc) ? b : c;
-#else /* PNG_SLOW_PAETH */
- p = a + b - c;
- pa = abs(p - a);
- pb = abs(p - b);
- pc = abs(p - c);
-
- if (pa <= pb && pa <= pc)
- p = a;
-
- else if (pb <= pc)
- p = b;
-
- else
- p = c;
-#endif /* PNG_SLOW_PAETH */
-
- v = *dp++ = (png_byte)(((int)*rp++ - p) & 0xff);
-
- sum += (v < 128) ? v : 256 - v;
-
- if (sum > lmins) /* We are already worse, don't continue. */
- break;
- }
-
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- if (png_ptr->heuristic_method == PNG_FILTER_HEURISTIC_WEIGHTED)
- {
- int j;
- png_uint_32 sumhi, sumlo;
- sumlo = sum & PNG_LOMASK;
- sumhi = (sum >> PNG_HISHIFT) & PNG_HIMASK;
-
- for (j = 0; j < num_p_filters; j++)
- {
- if (png_ptr->prev_filters[j] == PNG_FILTER_VALUE_PAETH)
- {
- sumlo = (sumlo * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_weights[j]) >>
- PNG_WEIGHT_SHIFT;
- }
- }
-
- sumlo = (sumlo * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
-
- sumhi = (sumhi * png_ptr->filter_costs[PNG_FILTER_VALUE_PAETH]) >>
- PNG_COST_SHIFT;
-
- if (sumhi > PNG_HIMASK)
- sum = PNG_MAXSUM;
-
- else
- sum = (sumhi << PNG_HISHIFT) + sumlo;
- }
-#endif
-
- if (sum < mins)
- {
- best_row = png_ptr->paeth_row;
- }
- }
-#endif /* PNG_WRITE_FILTER_SUPPORTED */
-
- /* Do the actual writing of the filtered row data from the chosen filter. */
- png_write_filtered_row(png_ptr, best_row, row_info->rowbytes+1);
-
-#ifdef PNG_WRITE_FILTER_SUPPORTED
-#ifdef PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
- /* Save the type of filter we picked this time for future calculations */
- if (png_ptr->num_prev_filters > 0)
- {
- int j;
-
- for (j = 1; j < num_p_filters; j++)
- {
- png_ptr->prev_filters[j] = png_ptr->prev_filters[j - 1];
- }
-
- png_ptr->prev_filters[j] = best_row[0];
- }
-#endif
-#endif /* PNG_WRITE_FILTER_SUPPORTED */
-}
-
-
-/* Do the actual writing of a previously filtered row. */
-static void
-png_write_filtered_row(png_structrp png_ptr, png_bytep filtered_row,
- png_size_t full_row_length/*includes filter byte*/)
-{
- png_debug(1, "in png_write_filtered_row");
-
- png_debug1(2, "filter = %d", filtered_row[0]);
-
- png_compress_IDAT(png_ptr, filtered_row, full_row_length, Z_NO_FLUSH);
-
- /* Swap the current and previous rows */
- if (png_ptr->prev_row != NULL)
- {
- png_bytep tptr;
-
- tptr = png_ptr->prev_row;
- png_ptr->prev_row = png_ptr->row_buf;
- png_ptr->row_buf = tptr;
- }
-
- /* Finish row - updates counters and flushes zlib if last row */
- png_write_finish_row(png_ptr);
-
-#ifdef PNG_WRITE_FLUSH_SUPPORTED
- png_ptr->flush_rows++;
-
- if (png_ptr->flush_dist > 0 &&
- png_ptr->flush_rows >= png_ptr->flush_dist)
- {
- png_write_flush(png_ptr);
- }
-#endif
-}
-#endif /* PNG_WRITE_SUPPORTED */
+++ /dev/null
-
-Makefiles for libpng version 1.6.3 - July 18, 2013
-
-pnglibconf.h.prebuilt => Stores configuration settings
- makefile.linux => Linux/ELF makefile
- (gcc, creates libpng16.so.16.1.6.3)
- makefile.gcc => Generic makefile (gcc, creates static libpng.a)
- makefile.knr => Archaic UNIX Makefile that converts files with
- ansi2knr (Requires ansi2knr.c from
- ftp://ftp.cs.wisc.edu/ghost)
- makefile.acorn => Acorn makefile
- makefile.aix => AIX/gcc makefile
- makefile.amiga => Amiga makefile
- makefile.atari => Atari makefile
- makefile.bc32 => 32-bit Borland C++ (all modules compiled in C mode)
- makefile.beos => beos makefile
- makefile.bor => Borland makefile (uses bcc)
- makefile.cegcc => minge32ce for Windows CE makefile
- makefile.darwin => Darwin makefile, can use on MacosX
- makefile.dec => DEC Alpha UNIX makefile
- makefile.dj2 => DJGPP 2 makefile
- makefile.elf => Linux/ELF makefile symbol versioning,
- (gcc, creates libpng16.so.16.1.6.3)
- makefile.freebsd => FreeBSD makefile
- makefile.gcc => Generic gcc makefile
- makefile.hpgcc => HPUX makefile using gcc
- makefile.hpux => HPUX (10.20 and 11.00) makefile
- makefile.hp64 => HPUX (10.20 and 11.00) makefile, 64-bit
- makefile.ibmc => IBM C/C++ version 3.x for Win32 and OS/2 (static)
- makefile.intel => Intel C/C++ version 4.0 and later
- makefile.mips => MIPS makefile
- makefile.msc => Microsoft C makefile
- makefile.netbsd => NetBSD/cc makefile, makes libpng.so.
- makefile.openbsd => OpenBSD makefile
- makefile.os2 => OS/2 Makefile (gcc and emx, requires libpng.def)
- makefile.sco => For SCO OSr5 ELF and Unixware 7 with Native cc
- makefile.sggcc => Silicon Graphics (gcc,
- creates libpng16.so.16.1.6.3)
- makefile.sgi => Silicon Graphics IRIX makefile (cc, creates static lib)
- makefile.solaris => Solaris 2.X makefile (gcc,
- creates libpng16.so.16.1.6.3)
- makefile.so9 => Solaris 9 makefile (gcc,
- creates libpng16.so.16.1.6.3)
- makefile.std => Generic UNIX makefile (cc, creates static libpng.a)
- makefile.sunos => Sun makefile
- makefile.32sunu => Sun Ultra 32-bit makefile
- makefile.64sunu => Sun Ultra 64-bit makefile
- makefile.tc3 => Turbo C 3.0 makefile
- makefile.vcwin32 => makefile for Microsoft Visual C++ 4.0 and later
- makevms.com => VMS build script
- smakefile.ppc => AMIGA smakefile for SAS C V6.58/7.00 PPC compiler
- (Requires SCOPTIONS, copied from scripts/SCOPTIONS.ppc)
-
-Other supporting scripts:
- README.txt => This file
- descrip.mms => VMS makefile for MMS or MMK
- libpng-config-body.in => used by several makefiles to create libpng-config
- libpng-config-head.in => used by several makefiles to create libpng-config
- libpng.pc.in => Used by several makefiles to create libpng.pc
- pngwin.rc => Used by the visualc71 project.
- pngwin.def => Used by makefile.os2
- pngwin.dfn => Used to maintain pngwin.def
- SCOPTIONS.ppc => Used with smakefile.ppc
-
- checksym.awk => Used for maintaining pnglibconf.h
- def.dfn => Used for maintaining pnglibconf.h
- options.awk => Used for maintaining pnglibconf.h
- pnglibconf.dfa => Used for maintaining pnglibconf.h
- pnglibconf.mak => Used for maintaining pnglibconf.h
- sym.dfn => Used for symbol versioning
- symbols.def => Used for symbol versioning
- symbols.dfn => Used for symbol versioning
- vers.dfn => Used for symbol versioning
-
- libtool.m4 => Used by autoconf tools
- ltoptions.m4 => Used by autoconf tools
- ltsugar.m4 => Used by autoconf tools
- ltversion.m4 => Used by autoconf tools
- lt~obsolete.m4 => Used by autoconf tools
-
- intprefix.dfn => Used by autoconf tools
- macro.lst => Used by autoconf tools
- prefix.dfn => Used by autoconf tools
-
-
-Further information can be found in comments in the individual makefiles.
+++ /dev/null
-OPTIMIZE
-OPTPEEP
-OPTTIME
-OPTSCHED
-AUTOREGISTER
-PARMS=REGISTERS
-INCLUDEDIR=hlp:ppc/include
+++ /dev/null
-#!/bin/awk -f
-# Check a list of symbols against the master definition
-# (official) list. Arguments:
-#
-# awk -f checksym.awk official-def list-to-check
-#
-# Output is a file in the current directory called 'symbols.new',
-# the value of the awk variable "of" (which can be changed on the
-# command line if required.) stdout holds error messages. Error
-# code indicates success or failure.
-#
-# NOTE: this is a pure, old fashioned, awk script. It will
-# work with any awk
-
-BEGIN{
- err=0
- master="" # master file
- official[1] = "" # defined symbols from master file
- symbol[1] = "" # defined symbols from png.h
- removed[1] = "" # removed symbols from png.h
- lasto = 0 # last ordinal value from png.h
- mastero = 0 # highest ordinal in master file
- symbolo = 0 # highest ordinal in png.h
- missing = "error"# log an error on missing symbols
- of="symbols.new" # default to a fixed name
-}
-
-# Read existing definitions from the master file (the first
-# file on the command line.) This must be a def file and it
-# has definition lines (others are ignored) of the form:
-#
-# symbol @ordinal
-#
-master == "" {
- master = FILENAME
-}
-FILENAME==master && NF==2 && $2~/^@/ && $1!~/^;/ {
- o=0+substr($2,2)
- if (o > 0) {
- if (official[o] == "") {
- official[o] = $1
- if (o > mastero) mastero = o
- next
- } else
- print master ": duplicated symbol:", official[o] ":", $0
- } else
- print master ": bad export line format:", $0
- err = 1
-}
-FILENAME==master && $1==";missing" && NF==2{
- # This allows the master file to control how missing symbols
- # are handled; symbols that aren't in either the master or
- # the new file. Valid values are 'ignore', 'warning' and
- # 'error'
- missing = $2
-}
-FILENAME==master {
- next
-}
-
-# Read new definitions, these are free form but the lines must
-# just be symbol definitions. Lines will be commented out for
-# 'removed' symbols, introduced in png.h using PNG_REMOVED rather
-# than PNG_EXPORT. Use symbols.dfn or pngwin.dfn to generate the
-# input file.
-#
-# symbol @ordinal # two fields, exported symbol
-# ; symbol @ordinal # three fields, removed symbol
-# ; @ordinal # two fields, the last ordinal
-NF==2 && $1 == ";" && $2 ~ /^@[1-9][0-9]*$/ { # last ordinal
- o=0+substr($2,2)
- if (lasto == 0 || lasto == o)
- lasto=o
- else {
- print "png.h: duplicated last ordinal:", lasto, o
- err = 1
- }
- next
-}
-NF==3 && $1 == ";" && $3 ~ /^@[1-9][0-9]*$/ { # removed symbol
- o=0+substr($3,2)
- if (removed[o] == "" || removed[o] == $2) {
- removed[o] = $2
- if (o > symbolo) symbolo = o
- } else {
- print "png.h: duplicated removed symbol", o ": '" removed[o] "' != '" $2 "'"
- err = 1
- }
- next
-}
-NF==2 && $2 ~ /^@[1-9][0-9]*$/ { # exported symbol
- o=0+substr($2,2)
- if (symbol[o] == "" || symbol[o] == $1) {
- symbol[o] = $1
- if (o > symbolo) symbolo = o
- } else {
- print "png.h: duplicated symbol", o ": '" symbol[o] "' != '" $1 "'"
- err = 1
- }
-}
-{
- next # skip all other lines
-}
-
-# At the end check for symbols marked as both duplicated and removed
-END{
- if (symbolo > lasto) {
- print "highest symbol ordinal in png.h,", symbolo ", exceeds last ordinal from png.h", lasto
- err = 1
- }
- if (mastero > lasto) {
- print "highest symbol ordinal in", master ",", mastero ", exceeds last ordinal from png.h", lasto
- err = 1
- }
- unexported=0
- # Add a standard header to symbols.new:
- print ";Version INSERT-VERSION-HERE" >of
- print ";--------------------------------------------------------------" >of
- print "; LIBPNG symbol list as a Win32 DEF file" >of
- print "; Contains all the symbols that can be exported from libpng" >of
- print ";--------------------------------------------------------------" >of
- print "LIBRARY" >of
- print "" >of
- print "EXPORTS" >of
-
- for (o=1; o<=lasto; ++o) {
- if (symbol[o] == "" && removed[o] == "") {
- if (unexported == 0) unexported = o
- if (official[o] == "") {
- # missing in export list too, so ok
- if (o < lasto) continue
- }
- }
- if (unexported != 0) {
- # Symbols in the .def but not in the new file are errors, but
- # the 'unexported' symbols aren't in either. By default this
- # is an error too (see the setting of 'missing' at the start),
- # but this can be reset on the command line or by stuff in the
- # file - see the comments above.
- if (missing != "ignore") {
- if (o-1 > unexported)
- print "png.h:", missing ": missing symbols:", unexported "-" o-1
- else
- print "png.h:", missing ": missing symbol:", unexported
- if (missing != "warning")
- err = 1
- }
- unexported = 0
- }
- if (symbol[o] != "" && removed[o] != "") {
- print "png.h: symbol", o, "both exported as '" symbol[o] "' and removed as '" removed[o] "'"
- err = 1
- } else if (symbol[o] != official[o]) {
- # either the symbol is missing somewhere or it changed
- err = 1
- if (symbol[o] == "")
- print "png.h: symbol", o, "is exported as '" official[o] "' in", master
- else if (official[o] == "")
- print "png.h: exported symbol", o, "'" symbol[o] "' not present in", master
- else
- print "png.h: exported symbol", o, "'" symbol[o] "' exists as '" official[o] "' in", master
- }
-
- # Finally generate symbols.new
- if (symbol[o] != "")
- print " " symbol[o], "@" o > of
- }
-
- if (err != 0) {
- print "*** A new list is in", of, "***"
- exit 1
- }
-}
+++ /dev/null
-/* def.dfn - define format of libpng.def
- *
- * Last changed in libpng version 1.5.7 [December 15, 2011]
- * Copyright (c) 2010-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* Write the export file header: */
-PNG_DFN ";--------------------------------------------------------------"
-PNG_DFN "; LIBPNG module definition file for OS/2"
-PNG_DFN ";--------------------------------------------------------------"
-PNG_DFN ""
-PNG_DFN "; If you give the library an explicit name one or other files"
-PNG_DFN "; may need modifying to support the new name on one or more"
-PNG_DFN "; systems."
-PNG_DFN "LIBRARY"
-PNG_DFN "OS2 DESCRIPTION "PNG image compression library""
-PNG_DFN "OS2 CODE PRELOAD MOVEABLE DISCARDABLE"
-PNG_DFN ""
-PNG_DFN "EXPORTS"
-PNG_DFN ";Version 1.6.3"
-
-#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
- PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"
-
-#include "../png.h"
+++ /dev/null
-
-cc_defs = /inc=$(ZLIBSRC)
-c_deb =
-
-.ifdef __DECC__
-pref = /prefix=all
-.endif
-
-
-
-OBJS = png.obj, pngset.obj, pngget.obj, pngrutil.obj, pngtrans.obj,\
- pngwutil.obj, pngread.obj, pngmem.obj, pngwrite.obj, pngrtran.obj,\
- pngwtran.obj, pngrio.obj, pngwio.obj, pngerror.obj, pngpread.obj
-
-
-CFLAGS= $(C_DEB) $(CC_DEFS) $(PREF)
-
-all : pngtest.exe libpng.olb
- @ write sys$output " pngtest available"
-
-libpng.olb : libpng.olb($(OBJS))
- @ write sys$output " Libpng available"
-
-
-pngtest.exe : pngtest.obj libpng.olb
- link pngtest,libpng.olb/lib,$(ZLIBSRC)libz.olb/lib
-
-test : pngtest.exe
- run pngtest
-
-clean :
- delete *.obj;*,*.exe;
-
-
-# Other dependencies.
-png.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngpread.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngset.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngget.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngread.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngrtran.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngrutil.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngerror.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngmem.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngrio.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngwio.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngtrans.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngwrite.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngwtran.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-pngwutil.obj : png.h, pngconf.h, pnglibconf.h, pngpriv.h, pngstruct.h, pnginfo.h, pngdebug.h
-
-pngtest.obj : png.h, pngconf.h
+++ /dev/null
-#!/bin/awk -f
-# scripts/dfn.awk - process a .dfn file
-#
-# last changed in libpng version 1.5.14 - February 4, 2013
-#
-# Copyright (c) 2013-2013 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# The output of this script is written to the file given by
-# the variable 'out', which should be set on the command line.
-# Error messages are printed to stdout and if any are printed
-# the script will exit with error code 1.
-
-BEGIN{
- out="/dev/null" # as a flag
- out_count=0 # count of output lines
- err=0 # set if an error occured
- sort=0 # sort the output
- array[""]=""
-}
-
-# The output file must be specified before any input:
-NR==1 && out == "/dev/null" {
- print "out=output.file must be given on the command line"
- # but continue without setting the error code, this allows the
- # script to be checked easily
-}
-
-# Output can be sorted; two lines are recognized
-$1 == "PNG_DFN_START_SORT"{
- sort=0+$2
- next
-}
-
-$1 ~ /^PNG_DFN_END_SORT/{
- # Do a very simple, slow, sort; notice that blank lines won't be
- # output by this
- for (entry in array) {
- while (array[entry] != "") {
- key = entry
- value = array[key]
- array[key] = ""
-
- for (alt in array) {
- if (array[alt] != "" && alt < key) {
- array[key] = value
- value = array[alt]
- key = alt
- array[alt] = ""
- }
- }
-
- print value >out
- }
- }
- sort=0
- next
-}
-
-/^[^"]*PNG_DFN *".*"[^"]*$/{
- # A definition line, apparently correctly formated, extract the
- # definition then replace any doubled "" that remain with a single
- # double quote. Notice that the original doubled double quotes
- # may have been split by tokenization
- #
- # Sometimes GCC splits the PNG_DFN lines, we know this has happened
- # if the quotes aren't closed and must read another line. In this
- # case it is essential to reject lines that start '#' because those
- # are introduced #line directives.
- orig=$0
- line=$0
- lineno=FNR
- if (lineno == "") lineno=NR
-
- if (sub(/^[^"]*PNG_DFN *"/,"",line) != 1) {
- print "line", lineno ": processing failed:"
- print orig
- err=1
- next
- } else {
- ++out_count
- }
-
- # Now examine quotes within the value:
- #
- # @" - delete this and any following spaces
- # "@ - delete this and any preceding spaces
- # @' - replace this by a double quote
- #
- # This allows macro substitution by the C compiler thus:
- #
- # #define first_name John
- # #define last_name Smith
- #
- # PNG_DFN"#define name @'@" first_name "@ @" last_name "@@'"
- #
- # Might get C preprocessed to:
- #
- # PNG_DFN "#define foo @'@" John "@ @" Smith "@@'"
- #
- # Which this script reduces to:
- #
- # #define name "John Smith"
- #
- while (1) {
- # While there is an @" remove it and the next "@
- if (line ~ /@"/) {
- if (line ~ /@".*"@/) {
- # Do this special case first to avoid swallowing extra spaces
- # before or after the @ stuff:
- if (!sub(/@" *"@/, "", line)) {
- # Ok, do it in pieces - there has to be a non-space between the
- # two. NOTE: really weird things happen if a leading @" is
- # lost - the code will error out below (I believe).
- if (!sub(/@" */, "", line) || !sub(/ *"@/, "", line)) {
- print "line", lineno, ": internal error:", orig
- exit 1
- }
- }
- }
-
- # There is no matching "@. Assume a split line
- else while (1) {
- if (getline nextline) {
- # If the line starts with '#' it is a preprocesor line directive
- # from cc -E, skip it:
- if (nextline !~ /^#/) {
- line = line " " nextline
- break
- }
- } else {
- # This is end-of-input - probably a missig "@ on the first line:
- print "line", lineno ": unbalanced @\" ... \"@ pair"
- err=1
- next
- }
- }
-
- # Keep going until all the @" have gone
- continue
- }
-
- # Attempt to remove a trailing " (not preceded by '@') - if this can
- # be done stop now, if not assume a split line again
- if (sub(/"[^"]*$/, "", line))
- break
-
- # Read another line
- while (1) {
- if (getline nextline) {
- if (nextline !~ /^#/) {
- line = line " " nextline
- # Go back to stripping @" "@ pairs
- break
- }
- } else {
- print "line", lineno ": unterminated PNG_DFN string"
- err=1
- next
- }
- }
- }
-
- # Put any needed double quotes in (at the end, because these would otherwise
- # interfere with the processing above.)
- gsub(/@'/,"\"", line)
-
- # Remove any trailing spaces (not really required, but for
- # editorial consistency
- sub(/ *$/, "", line)
-
- # Remove trailing CR
- sub(/\r$/, "", line)
-
- if (sort) {
- if (split(line, parts) < sort) {
- print "line", lineno ": missing sort field:", line
- err=1
- } else
- array[parts[sort]] = line
- }
-
- else
- print line >out
- next
-}
-
-/PNG_DFN/{
- print "line", NR, "incorrectly formated PNG_DFN line:"
- print $0
- err = 1
-}
-
-END{
- if (out_count > 0 || err > 0)
- exit err
-
- print "no definition lines found"
- exit 1
-}
+++ /dev/null
-
-/* intprefix.dfn - generate an unprefixed internal symbol list
- *
- * Last changed in libpng version 1.6.0 [January 30, 2012]
- * Copyright (c) 2012 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#define PNG_INTERNAL_DATA(type, name, array)\
- PNG_DFN "@" name "@"
-
-#define PNG_INTERNAL_FUNCTION(type, name, args, attributes)\
- PNG_DFN "@" name "@"
-
-#define PNGPREFIX_H /* self generation */
-#include "../pngpriv.h"
+++ /dev/null
-
-usage()
-{
- cat <<EOF
-Usage: libpng-config [OPTION] ...
-
-Known values for OPTION are:
-
- --prefix print libpng prefix
- --libdir print path to directory containing library
- --libs print library linking information
- --ccopts print compiler options
- --cppflags print pre-processor flags
- --cflags print preprocessor flags, I_opts, and compiler options
- --I_opts print "-I" include options
- --L_opts print linker "-L" flags for dynamic linking
- --R_opts print dynamic linker "-R" or "-rpath" flags
- --ldopts print linker options
- --ldflags print linker flags (ldopts, L_opts, R_opts, and libs)
- --static revise subsequent outputs for static linking
- --help print this help and exit
- --version print version information
-EOF
-
- exit $1
-}
-
-if test $# -eq 0; then
- usage 1
-fi
-
-while test $# -gt 0; do
- case "$1" in
-
- --prefix)
- echo ${prefix}
- ;;
-
- --version)
- echo ${version}
- exit 0
- ;;
-
- --help)
- usage 0
- ;;
-
- --ccopts)
- echo ${ccopts}
- ;;
-
- --cppflags)
- echo ${cppflags}
- ;;
-
- --cflags)
- echo ${I_opts} ${cppflags} ${ccopts}
- ;;
-
- --libdir)
- echo ${libdir}
- ;;
-
- --libs)
- echo ${libs}
- ;;
-
- --I_opts)
- echo ${I_opts}
- ;;
-
- --L_opts)
- echo ${L_opts}
- ;;
-
- --R_opts)
- echo ${R_opts}
- ;;
-
- --ldflags)
- echo ${ldflags} ${L_opts} ${R_opts} ${libs}
- ;;
-
- --static)
- R_opts=""
- ;;
-
- *)
- usage
- exit 1
- ;;
- esac
- shift
-done
-
-exit 0
+++ /dev/null
-#! /bin/sh
-
-# libpng-config
-# provides configuration info for libpng.
-
-# Copyright (C) 2002 Glenn Randers-Pehrson
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Modeled after libxml-config.
-
-version=1.6.3
-prefix=""
-libdir=""
-libs=""
-I_opts=""
-L_opts=""
-R_opts=""
-cppflags=""
-ccopts=""
-ldopts=""
-
+++ /dev/null
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-includedir=@includedir@/libpng16
-
-Name: libpng
-Description: Loads and saves PNG files
-Version: 1.6.3
-Libs: -L${libdir} -lpng16
-Cflags: -I${includedir}
+++ /dev/null
-# libtool.m4 - Configure libtool for the host system. -*-Autoconf-*-
-#
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011 Free Software
-# Foundation, Inc.
-# Written by Gordon Matzigkeit, 1996
-#
-# This file is free software; the Free Software Foundation gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-
-m4_define([_LT_COPYING], [dnl
-# Copyright (C) 1996, 1997, 1998, 1999, 2000, 2001, 2003, 2004, 2005,
-# 2006, 2007, 2008, 2009, 2010, 2011 Free Software
-# Foundation, Inc.
-# Written by Gordon Matzigkeit, 1996
-#
-# This file is part of GNU Libtool.
-#
-# GNU Libtool is free software; you can redistribute it and/or
-# modify it under the terms of the GNU General Public License as
-# published by the Free Software Foundation; either version 2 of
-# the License, or (at your option) any later version.
-#
-# As a special exception to the GNU General Public License,
-# if you distribute this file as part of a program or library that
-# is built using GNU Libtool, you may include this file under the
-# same distribution terms that you use for the rest of that program.
-#
-# GNU Libtool is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with GNU Libtool; see the file COPYING. If not, a copy
-# can be downloaded from http://www.gnu.org/licenses/gpl.html, or
-# obtained by writing to the Free Software Foundation, Inc.,
-# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
-])
-
-# serial 57 LT_INIT
-
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-# ------------------
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-m4_defun([_LT_CHECK_BUILDDIR],
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- AC_MSG_WARN([Libtool does not cope well with whitespace in `pwd`]) ;;
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-])
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-AC_SUBST(LIBTOOL)dnl
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-
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-# -------------------
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-m4_defun([_LT_CC_BASENAME],
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- \-*) ;;
- *) break;;
- esac
-done
-cc_basename=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
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-_LT_DECL([], [host], [0])dnl
-_LT_DECL([], [host_os], [0])dnl
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-dnl
-AC_REQUIRE([AC_PROG_CC])dnl
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-AC_REQUIRE([LT_CMD_MAX_LEN])dnl
-_LT_DECL([objext], [ac_objext], [0], [Object file suffix (normally "o")])dnl
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-dnl
-m4_require([_LT_FILEUTILS_DEFAULTS])dnl
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-m4_require([_LT_WITH_SYSROOT])dnl
-
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-_LT_CHECK_OBJDIR
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- COLLECT_NAMES=
- export COLLECT_NAMES
- fi
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-esac
-
-# Global variables:
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-# which needs '.lib').
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- fi
- ;;
-esac
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-# Use C for the default configuration in the libtool script
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-_LT_CONFIG_COMMANDS
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-
-# Same as above, but do not quote variable references.
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-## ------------------------------------- ##
-
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-
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-m4_define([_LT_DECL],
-[lt_if_append_uniq([lt_decl_varnames], [$2], [, ],
- [lt_dict_add_subkey([lt_decl_dict], [$2], [libtool_name],
- [m4_ifval([$1], [$1], [$2])])
- lt_dict_add_subkey([lt_decl_dict], [$2], [value], [$3])
- m4_ifval([$4],
- [lt_dict_add_subkey([lt_decl_dict], [$2], [description], [$4])])
- lt_dict_add_subkey([lt_decl_dict], [$2],
- [tagged?], [m4_ifval([$5], [yes], [no])])])
-])
-
-
-# _LT_TAGDECL([CONFIGNAME], VARNAME, VALUE, [DESCRIPTION])
-# --------------------------------------------------------
-m4_define([_LT_TAGDECL], [_LT_DECL([$1], [$2], [$3], [$4], [yes])])
-
-
-# lt_decl_tag_varnames([SEPARATOR], [VARNAME1...])
-# ------------------------------------------------
-m4_define([lt_decl_tag_varnames],
-[_lt_decl_filter([tagged?], [yes], $@)])
-
-
-# _lt_decl_filter(SUBKEY, VALUE, [SEPARATOR], [VARNAME1..])
-# ---------------------------------------------------------
-m4_define([_lt_decl_filter],
-[m4_case([$#],
- [0], [m4_fatal([$0: too few arguments: $#])],
- [1], [m4_fatal([$0: too few arguments: $#: $1])],
- [2], [lt_dict_filter([lt_decl_dict], [$1], [$2], [], lt_decl_varnames)],
- [3], [lt_dict_filter([lt_decl_dict], [$1], [$2], [$3], lt_decl_varnames)],
- [lt_dict_filter([lt_decl_dict], $@)])[]dnl
-])
-
-
-# lt_decl_quote_varnames([SEPARATOR], [VARNAME1...])
-# --------------------------------------------------
-m4_define([lt_decl_quote_varnames],
-[_lt_decl_filter([value], [1], $@)])
-
-
-# lt_decl_dquote_varnames([SEPARATOR], [VARNAME1...])
-# ---------------------------------------------------
-m4_define([lt_decl_dquote_varnames],
-[_lt_decl_filter([value], [2], $@)])
-
-
-# lt_decl_varnames_tagged([SEPARATOR], [VARNAME1...])
-# ---------------------------------------------------
-m4_define([lt_decl_varnames_tagged],
-[m4_assert([$# <= 2])dnl
-_$0(m4_quote(m4_default([$1], [[, ]])),
- m4_ifval([$2], [[$2]], [m4_dquote(lt_decl_tag_varnames)]),
- m4_split(m4_normalize(m4_quote(_LT_TAGS)), [ ]))])
-m4_define([_lt_decl_varnames_tagged],
-[m4_ifval([$3], [lt_combine([$1], [$2], [_], $3)])])
-
-
-# lt_decl_all_varnames([SEPARATOR], [VARNAME1...])
-# ------------------------------------------------
-m4_define([lt_decl_all_varnames],
-[_$0(m4_quote(m4_default([$1], [[, ]])),
- m4_if([$2], [],
- m4_quote(lt_decl_varnames),
- m4_quote(m4_shift($@))))[]dnl
-])
-m4_define([_lt_decl_all_varnames],
-[lt_join($@, lt_decl_varnames_tagged([$1],
- lt_decl_tag_varnames([[, ]], m4_shift($@))))dnl
-])
-
-
-# _LT_CONFIG_STATUS_DECLARE([VARNAME])
-# ------------------------------------
-# Quote a variable value, and forward it to `config.status' so that its
-# declaration there will have the same value as in `configure'. VARNAME
-# must have a single quote delimited value for this to work.
-m4_define([_LT_CONFIG_STATUS_DECLARE],
-[$1='`$ECHO "$][$1" | $SED "$delay_single_quote_subst"`'])
-
-
-# _LT_CONFIG_STATUS_DECLARATIONS
-# ------------------------------
-# We delimit libtool config variables with single quotes, so when
-# we write them to config.status, we have to be sure to quote all
-# embedded single quotes properly. In configure, this macro expands
-# each variable declared with _LT_DECL (and _LT_TAGDECL) into:
-#
-# <var>='`$ECHO "$<var>" | $SED "$delay_single_quote_subst"`'
-m4_defun([_LT_CONFIG_STATUS_DECLARATIONS],
-[m4_foreach([_lt_var], m4_quote(lt_decl_all_varnames),
- [m4_n([_LT_CONFIG_STATUS_DECLARE(_lt_var)])])])
-
-
-# _LT_LIBTOOL_TAGS
-# ----------------
-# Output comment and list of tags supported by the script
-m4_defun([_LT_LIBTOOL_TAGS],
-[_LT_FORMAT_COMMENT([The names of the tagged configurations supported by this script])dnl
-available_tags="_LT_TAGS"dnl
-])
-
-
-# _LT_LIBTOOL_DECLARE(VARNAME, [TAG])
-# -----------------------------------
-# Extract the dictionary values for VARNAME (optionally with TAG) and
-# expand to a commented shell variable setting:
-#
-# # Some comment about what VAR is for.
-# visible_name=$lt_internal_name
-m4_define([_LT_LIBTOOL_DECLARE],
-[_LT_FORMAT_COMMENT(m4_quote(lt_dict_fetch([lt_decl_dict], [$1],
- [description])))[]dnl
-m4_pushdef([_libtool_name],
- m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [libtool_name])))[]dnl
-m4_case(m4_quote(lt_dict_fetch([lt_decl_dict], [$1], [value])),
- [0], [_libtool_name=[$]$1],
- [1], [_libtool_name=$lt_[]$1],
- [2], [_libtool_name=$lt_[]$1],
- [_libtool_name=lt_dict_fetch([lt_decl_dict], [$1], [value])])[]dnl
-m4_ifval([$2], [_$2])[]m4_popdef([_libtool_name])[]dnl
-])
-
-
-# _LT_LIBTOOL_CONFIG_VARS
-# -----------------------
-# Produce commented declarations of non-tagged libtool config variables
-# suitable for insertion in the LIBTOOL CONFIG section of the `libtool'
-# script. Tagged libtool config variables (even for the LIBTOOL CONFIG
-# section) are produced by _LT_LIBTOOL_TAG_VARS.
-m4_defun([_LT_LIBTOOL_CONFIG_VARS],
-[m4_foreach([_lt_var],
- m4_quote(_lt_decl_filter([tagged?], [no], [], lt_decl_varnames)),
- [m4_n([_LT_LIBTOOL_DECLARE(_lt_var)])])])
-
-
-# _LT_LIBTOOL_TAG_VARS(TAG)
-# -------------------------
-m4_define([_LT_LIBTOOL_TAG_VARS],
-[m4_foreach([_lt_var], m4_quote(lt_decl_tag_varnames),
- [m4_n([_LT_LIBTOOL_DECLARE(_lt_var, [$1])])])])
-
-
-# _LT_TAGVAR(VARNAME, [TAGNAME])
-# ------------------------------
-m4_define([_LT_TAGVAR], [m4_ifval([$2], [$1_$2], [$1])])
-
-
-# _LT_CONFIG_COMMANDS
-# -------------------
-# Send accumulated output to $CONFIG_STATUS. Thanks to the lists of
-# variables for single and double quote escaping we saved from calls
-# to _LT_DECL, we can put quote escaped variables declarations
-# into `config.status', and then the shell code to quote escape them in
-# for loops in `config.status'. Finally, any additional code accumulated
-# from calls to _LT_CONFIG_LIBTOOL_INIT is expanded.
-m4_defun([_LT_CONFIG_COMMANDS],
-[AC_PROVIDE_IFELSE([LT_OUTPUT],
- dnl If the libtool generation code has been placed in $CONFIG_LT,
- dnl instead of duplicating it all over again into config.status,
- dnl then we will have config.status run $CONFIG_LT later, so it
- dnl needs to know what name is stored there:
- [AC_CONFIG_COMMANDS([libtool],
- [$SHELL $CONFIG_LT || AS_EXIT(1)], [CONFIG_LT='$CONFIG_LT'])],
- dnl If the libtool generation code is destined for config.status,
- dnl expand the accumulated commands and init code now:
- [AC_CONFIG_COMMANDS([libtool],
- [_LT_OUTPUT_LIBTOOL_COMMANDS], [_LT_OUTPUT_LIBTOOL_COMMANDS_INIT])])
-])#_LT_CONFIG_COMMANDS
-
-
-# Initialize.
-m4_define([_LT_OUTPUT_LIBTOOL_COMMANDS_INIT],
-[
-
-# The HP-UX ksh and POSIX shell print the target directory to stdout
-# if CDPATH is set.
-(unset CDPATH) >/dev/null 2>&1 && unset CDPATH
-
-sed_quote_subst='$sed_quote_subst'
-double_quote_subst='$double_quote_subst'
-delay_variable_subst='$delay_variable_subst'
-_LT_CONFIG_STATUS_DECLARATIONS
-LTCC='$LTCC'
-LTCFLAGS='$LTCFLAGS'
-compiler='$compiler_DEFAULT'
-
-# A function that is used when there is no print builtin or printf.
-func_fallback_echo ()
-{
- eval 'cat <<_LTECHO_EOF
-\$[]1
-_LTECHO_EOF'
-}
-
-# Quote evaled strings.
-for var in lt_decl_all_varnames([[ \
-]], lt_decl_quote_varnames); do
- case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
- *[[\\\\\\\`\\"\\\$]]*)
- eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED \\"\\\$sed_quote_subst\\"\\\`\\\\\\""
- ;;
- *)
- eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
- ;;
- esac
-done
-
-# Double-quote double-evaled strings.
-for var in lt_decl_all_varnames([[ \
-]], lt_decl_dquote_varnames); do
- case \`eval \\\\\$ECHO \\\\""\\\\\$\$var"\\\\"\` in
- *[[\\\\\\\`\\"\\\$]]*)
- eval "lt_\$var=\\\\\\"\\\`\\\$ECHO \\"\\\$\$var\\" | \\\$SED -e \\"\\\$double_quote_subst\\" -e \\"\\\$sed_quote_subst\\" -e \\"\\\$delay_variable_subst\\"\\\`\\\\\\""
- ;;
- *)
- eval "lt_\$var=\\\\\\"\\\$\$var\\\\\\""
- ;;
- esac
-done
-
-_LT_OUTPUT_LIBTOOL_INIT
-])
-
-# _LT_GENERATED_FILE_INIT(FILE, [COMMENT])
-# ------------------------------------
-# Generate a child script FILE with all initialization necessary to
-# reuse the environment learned by the parent script, and make the
-# file executable. If COMMENT is supplied, it is inserted after the
-# `#!' sequence but before initialization text begins. After this
-# macro, additional text can be appended to FILE to form the body of
-# the child script. The macro ends with non-zero status if the
-# file could not be fully written (such as if the disk is full).
-m4_ifdef([AS_INIT_GENERATED],
-[m4_defun([_LT_GENERATED_FILE_INIT],[AS_INIT_GENERATED($@)])],
-[m4_defun([_LT_GENERATED_FILE_INIT],
-[m4_require([AS_PREPARE])]dnl
-[m4_pushdef([AS_MESSAGE_LOG_FD])]dnl
-[lt_write_fail=0
-cat >$1 <<_ASEOF || lt_write_fail=1
-#! $SHELL
-# Generated by $as_me.
-$2
-SHELL=\${CONFIG_SHELL-$SHELL}
-export SHELL
-_ASEOF
-cat >>$1 <<\_ASEOF || lt_write_fail=1
-AS_SHELL_SANITIZE
-_AS_PREPARE
-exec AS_MESSAGE_FD>&1
-_ASEOF
-test $lt_write_fail = 0 && chmod +x $1[]dnl
-m4_popdef([AS_MESSAGE_LOG_FD])])])# _LT_GENERATED_FILE_INIT
-
-# LT_OUTPUT
-# ---------
-# This macro allows early generation of the libtool script (before
-# AC_OUTPUT is called), incase it is used in configure for compilation
-# tests.
-AC_DEFUN([LT_OUTPUT],
-[: ${CONFIG_LT=./config.lt}
-AC_MSG_NOTICE([creating $CONFIG_LT])
-_LT_GENERATED_FILE_INIT(["$CONFIG_LT"],
-[# Run this file to recreate a libtool stub with the current configuration.])
-
-cat >>"$CONFIG_LT" <<\_LTEOF
-lt_cl_silent=false
-exec AS_MESSAGE_LOG_FD>>config.log
-{
- echo
- AS_BOX([Running $as_me.])
-} >&AS_MESSAGE_LOG_FD
-
-lt_cl_help="\
-\`$as_me' creates a local libtool stub from the current configuration,
-for use in further configure time tests before the real libtool is
-generated.
-
-Usage: $[0] [[OPTIONS]]
-
- -h, --help print this help, then exit
- -V, --version print version number, then exit
- -q, --quiet do not print progress messages
- -d, --debug don't remove temporary files
-
-Report bugs to <bug-libtool@gnu.org>."
-
-lt_cl_version="\
-m4_ifset([AC_PACKAGE_NAME], [AC_PACKAGE_NAME ])config.lt[]dnl
-m4_ifset([AC_PACKAGE_VERSION], [ AC_PACKAGE_VERSION])
-configured by $[0], generated by m4_PACKAGE_STRING.
-
-Copyright (C) 2011 Free Software Foundation, Inc.
-This config.lt script is free software; the Free Software Foundation
-gives unlimited permision to copy, distribute and modify it."
-
-while test $[#] != 0
-do
- case $[1] in
- --version | --v* | -V )
- echo "$lt_cl_version"; exit 0 ;;
- --help | --h* | -h )
- echo "$lt_cl_help"; exit 0 ;;
- --debug | --d* | -d )
- debug=: ;;
- --quiet | --q* | --silent | --s* | -q )
- lt_cl_silent=: ;;
-
- -*) AC_MSG_ERROR([unrecognized option: $[1]
-Try \`$[0] --help' for more information.]) ;;
-
- *) AC_MSG_ERROR([unrecognized argument: $[1]
-Try \`$[0] --help' for more information.]) ;;
- esac
- shift
-done
-
-if $lt_cl_silent; then
- exec AS_MESSAGE_FD>/dev/null
-fi
-_LTEOF
-
-cat >>"$CONFIG_LT" <<_LTEOF
-_LT_OUTPUT_LIBTOOL_COMMANDS_INIT
-_LTEOF
-
-cat >>"$CONFIG_LT" <<\_LTEOF
-AC_MSG_NOTICE([creating $ofile])
-_LT_OUTPUT_LIBTOOL_COMMANDS
-AS_EXIT(0)
-_LTEOF
-chmod +x "$CONFIG_LT"
-
-# configure is writing to config.log, but config.lt does its own redirection,
-# appending to config.log, which fails on DOS, as config.log is still kept
-# open by configure. Here we exec the FD to /dev/null, effectively closing
-# config.log, so it can be properly (re)opened and appended to by config.lt.
-lt_cl_success=:
-test "$silent" = yes &&
- lt_config_lt_args="$lt_config_lt_args --quiet"
-exec AS_MESSAGE_LOG_FD>/dev/null
-$SHELL "$CONFIG_LT" $lt_config_lt_args || lt_cl_success=false
-exec AS_MESSAGE_LOG_FD>>config.log
-$lt_cl_success || AS_EXIT(1)
-])# LT_OUTPUT
-
-
-# _LT_CONFIG(TAG)
-# ---------------
-# If TAG is the built-in tag, create an initial libtool script with a
-# default configuration from the untagged config vars. Otherwise add code
-# to config.status for appending the configuration named by TAG from the
-# matching tagged config vars.
-m4_defun([_LT_CONFIG],
-[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-_LT_CONFIG_SAVE_COMMANDS([
- m4_define([_LT_TAG], m4_if([$1], [], [C], [$1]))dnl
- m4_if(_LT_TAG, [C], [
- # See if we are running on zsh, and set the options which allow our
- # commands through without removal of \ escapes.
- if test -n "${ZSH_VERSION+set}" ; then
- setopt NO_GLOB_SUBST
- fi
-
- cfgfile="${ofile}T"
- trap "$RM \"$cfgfile\"; exit 1" 1 2 15
- $RM "$cfgfile"
-
- cat <<_LT_EOF >> "$cfgfile"
-#! $SHELL
-
-# `$ECHO "$ofile" | sed 's%^.*/%%'` - Provide generalized library-building support services.
-# Generated automatically by $as_me ($PACKAGE$TIMESTAMP) $VERSION
-# Libtool was configured on host `(hostname || uname -n) 2>/dev/null | sed 1q`:
-# NOTE: Changes made to this file will be lost: look at ltmain.sh.
-#
-_LT_COPYING
-_LT_LIBTOOL_TAGS
-
-# ### BEGIN LIBTOOL CONFIG
-_LT_LIBTOOL_CONFIG_VARS
-_LT_LIBTOOL_TAG_VARS
-# ### END LIBTOOL CONFIG
-
-_LT_EOF
-
- case $host_os in
- aix3*)
- cat <<\_LT_EOF >> "$cfgfile"
-# AIX sometimes has problems with the GCC collect2 program. For some
-# reason, if we set the COLLECT_NAMES environment variable, the problems
-# vanish in a puff of smoke.
-if test "X${COLLECT_NAMES+set}" != Xset; then
- COLLECT_NAMES=
- export COLLECT_NAMES
-fi
-_LT_EOF
- ;;
- esac
-
- _LT_PROG_LTMAIN
-
- # We use sed instead of cat because bash on DJGPP gets confused if
- # if finds mixed CR/LF and LF-only lines. Since sed operates in
- # text mode, it properly converts lines to CR/LF. This bash problem
- # is reportedly fixed, but why not run on old versions too?
- sed '$q' "$ltmain" >> "$cfgfile" \
- || (rm -f "$cfgfile"; exit 1)
-
- _LT_PROG_REPLACE_SHELLFNS
-
- mv -f "$cfgfile" "$ofile" ||
- (rm -f "$ofile" && cp "$cfgfile" "$ofile" && rm -f "$cfgfile")
- chmod +x "$ofile"
-],
-[cat <<_LT_EOF >> "$ofile"
-
-dnl Unfortunately we have to use $1 here, since _LT_TAG is not expanded
-dnl in a comment (ie after a #).
-# ### BEGIN LIBTOOL TAG CONFIG: $1
-_LT_LIBTOOL_TAG_VARS(_LT_TAG)
-# ### END LIBTOOL TAG CONFIG: $1
-_LT_EOF
-])dnl /m4_if
-],
-[m4_if([$1], [], [
- PACKAGE='$PACKAGE'
- VERSION='$VERSION'
- TIMESTAMP='$TIMESTAMP'
- RM='$RM'
- ofile='$ofile'], [])
-])dnl /_LT_CONFIG_SAVE_COMMANDS
-])# _LT_CONFIG
-
-
-# LT_SUPPORTED_TAG(TAG)
-# ---------------------
-# Trace this macro to discover what tags are supported by the libtool
-# --tag option, using:
-# autoconf --trace 'LT_SUPPORTED_TAG:$1'
-AC_DEFUN([LT_SUPPORTED_TAG], [])
-
-
-# C support is built-in for now
-m4_define([_LT_LANG_C_enabled], [])
-m4_define([_LT_TAGS], [])
-
-
-# LT_LANG(LANG)
-# -------------
-# Enable libtool support for the given language if not already enabled.
-AC_DEFUN([LT_LANG],
-[AC_BEFORE([$0], [LT_OUTPUT])dnl
-m4_case([$1],
- [C], [_LT_LANG(C)],
- [C++], [_LT_LANG(CXX)],
- [Go], [_LT_LANG(GO)],
- [Java], [_LT_LANG(GCJ)],
- [Fortran 77], [_LT_LANG(F77)],
- [Fortran], [_LT_LANG(FC)],
- [Windows Resource], [_LT_LANG(RC)],
- [m4_ifdef([_LT_LANG_]$1[_CONFIG],
- [_LT_LANG($1)],
- [m4_fatal([$0: unsupported language: "$1"])])])dnl
-])# LT_LANG
-
-
-# _LT_LANG(LANGNAME)
-# ------------------
-m4_defun([_LT_LANG],
-[m4_ifdef([_LT_LANG_]$1[_enabled], [],
- [LT_SUPPORTED_TAG([$1])dnl
- m4_append([_LT_TAGS], [$1 ])dnl
- m4_define([_LT_LANG_]$1[_enabled], [])dnl
- _LT_LANG_$1_CONFIG($1)])dnl
-])# _LT_LANG
-
-
-m4_ifndef([AC_PROG_GO], [
-############################################################
-# NOTE: This macro has been submitted for inclusion into #
-# GNU Autoconf as AC_PROG_GO. When it is available in #
-# a released version of Autoconf we should remove this #
-# macro and use it instead. #
-############################################################
-m4_defun([AC_PROG_GO],
-[AC_LANG_PUSH(Go)dnl
-AC_ARG_VAR([GOC], [Go compiler command])dnl
-AC_ARG_VAR([GOFLAGS], [Go compiler flags])dnl
-_AC_ARG_VAR_LDFLAGS()dnl
-AC_CHECK_TOOL(GOC, gccgo)
-if test -z "$GOC"; then
- if test -n "$ac_tool_prefix"; then
- AC_CHECK_PROG(GOC, [${ac_tool_prefix}gccgo], [${ac_tool_prefix}gccgo])
- fi
-fi
-if test -z "$GOC"; then
- AC_CHECK_PROG(GOC, gccgo, gccgo, false)
-fi
-])#m4_defun
-])#m4_ifndef
-
-
-# _LT_LANG_DEFAULT_CONFIG
-# -----------------------
-m4_defun([_LT_LANG_DEFAULT_CONFIG],
-[AC_PROVIDE_IFELSE([AC_PROG_CXX],
- [LT_LANG(CXX)],
- [m4_define([AC_PROG_CXX], defn([AC_PROG_CXX])[LT_LANG(CXX)])])
-
-AC_PROVIDE_IFELSE([AC_PROG_F77],
- [LT_LANG(F77)],
- [m4_define([AC_PROG_F77], defn([AC_PROG_F77])[LT_LANG(F77)])])
-
-AC_PROVIDE_IFELSE([AC_PROG_FC],
- [LT_LANG(FC)],
- [m4_define([AC_PROG_FC], defn([AC_PROG_FC])[LT_LANG(FC)])])
-
-dnl The call to [A][M_PROG_GCJ] is quoted like that to stop aclocal
-dnl pulling things in needlessly.
-AC_PROVIDE_IFELSE([AC_PROG_GCJ],
- [LT_LANG(GCJ)],
- [AC_PROVIDE_IFELSE([A][M_PROG_GCJ],
- [LT_LANG(GCJ)],
- [AC_PROVIDE_IFELSE([LT_PROG_GCJ],
- [LT_LANG(GCJ)],
- [m4_ifdef([AC_PROG_GCJ],
- [m4_define([AC_PROG_GCJ], defn([AC_PROG_GCJ])[LT_LANG(GCJ)])])
- m4_ifdef([A][M_PROG_GCJ],
- [m4_define([A][M_PROG_GCJ], defn([A][M_PROG_GCJ])[LT_LANG(GCJ)])])
- m4_ifdef([LT_PROG_GCJ],
- [m4_define([LT_PROG_GCJ], defn([LT_PROG_GCJ])[LT_LANG(GCJ)])])])])])
-
-AC_PROVIDE_IFELSE([AC_PROG_GO],
- [LT_LANG(GO)],
- [m4_define([AC_PROG_GO], defn([AC_PROG_GO])[LT_LANG(GO)])])
-
-AC_PROVIDE_IFELSE([LT_PROG_RC],
- [LT_LANG(RC)],
- [m4_define([LT_PROG_RC], defn([LT_PROG_RC])[LT_LANG(RC)])])
-])# _LT_LANG_DEFAULT_CONFIG
-
-# Obsolete macros:
-AU_DEFUN([AC_LIBTOOL_CXX], [LT_LANG(C++)])
-AU_DEFUN([AC_LIBTOOL_F77], [LT_LANG(Fortran 77)])
-AU_DEFUN([AC_LIBTOOL_FC], [LT_LANG(Fortran)])
-AU_DEFUN([AC_LIBTOOL_GCJ], [LT_LANG(Java)])
-AU_DEFUN([AC_LIBTOOL_RC], [LT_LANG(Windows Resource)])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_CXX], [])
-dnl AC_DEFUN([AC_LIBTOOL_F77], [])
-dnl AC_DEFUN([AC_LIBTOOL_FC], [])
-dnl AC_DEFUN([AC_LIBTOOL_GCJ], [])
-dnl AC_DEFUN([AC_LIBTOOL_RC], [])
-
-
-# _LT_TAG_COMPILER
-# ----------------
-m4_defun([_LT_TAG_COMPILER],
-[AC_REQUIRE([AC_PROG_CC])dnl
-
-_LT_DECL([LTCC], [CC], [1], [A C compiler])dnl
-_LT_DECL([LTCFLAGS], [CFLAGS], [1], [LTCC compiler flags])dnl
-_LT_TAGDECL([CC], [compiler], [1], [A language specific compiler])dnl
-_LT_TAGDECL([with_gcc], [GCC], [0], [Is the compiler the GNU compiler?])dnl
-
-# If no C compiler was specified, use CC.
-LTCC=${LTCC-"$CC"}
-
-# If no C compiler flags were specified, use CFLAGS.
-LTCFLAGS=${LTCFLAGS-"$CFLAGS"}
-
-# Allow CC to be a program name with arguments.
-compiler=$CC
-])# _LT_TAG_COMPILER
-
-
-# _LT_COMPILER_BOILERPLATE
-# ------------------------
-# Check for compiler boilerplate output or warnings with
-# the simple compiler test code.
-m4_defun([_LT_COMPILER_BOILERPLATE],
-[m4_require([_LT_DECL_SED])dnl
-ac_outfile=conftest.$ac_objext
-echo "$lt_simple_compile_test_code" >conftest.$ac_ext
-eval "$ac_compile" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
-_lt_compiler_boilerplate=`cat conftest.err`
-$RM conftest*
-])# _LT_COMPILER_BOILERPLATE
-
-
-# _LT_LINKER_BOILERPLATE
-# ----------------------
-# Check for linker boilerplate output or warnings with
-# the simple link test code.
-m4_defun([_LT_LINKER_BOILERPLATE],
-[m4_require([_LT_DECL_SED])dnl
-ac_outfile=conftest.$ac_objext
-echo "$lt_simple_link_test_code" >conftest.$ac_ext
-eval "$ac_link" 2>&1 >/dev/null | $SED '/^$/d; /^ *+/d' >conftest.err
-_lt_linker_boilerplate=`cat conftest.err`
-$RM -r conftest*
-])# _LT_LINKER_BOILERPLATE
-
-# _LT_REQUIRED_DARWIN_CHECKS
-# -------------------------
-m4_defun_once([_LT_REQUIRED_DARWIN_CHECKS],[
- case $host_os in
- rhapsody* | darwin*)
- AC_CHECK_TOOL([DSYMUTIL], [dsymutil], [:])
- AC_CHECK_TOOL([NMEDIT], [nmedit], [:])
- AC_CHECK_TOOL([LIPO], [lipo], [:])
- AC_CHECK_TOOL([OTOOL], [otool], [:])
- AC_CHECK_TOOL([OTOOL64], [otool64], [:])
- _LT_DECL([], [DSYMUTIL], [1],
- [Tool to manipulate archived DWARF debug symbol files on Mac OS X])
- _LT_DECL([], [NMEDIT], [1],
- [Tool to change global to local symbols on Mac OS X])
- _LT_DECL([], [LIPO], [1],
- [Tool to manipulate fat objects and archives on Mac OS X])
- _LT_DECL([], [OTOOL], [1],
- [ldd/readelf like tool for Mach-O binaries on Mac OS X])
- _LT_DECL([], [OTOOL64], [1],
- [ldd/readelf like tool for 64 bit Mach-O binaries on Mac OS X 10.4])
-
- AC_CACHE_CHECK([for -single_module linker flag],[lt_cv_apple_cc_single_mod],
- [lt_cv_apple_cc_single_mod=no
- if test -z "${LT_MULTI_MODULE}"; then
- # By default we will add the -single_module flag. You can override
- # by either setting the environment variable LT_MULTI_MODULE
- # non-empty at configure time, or by adding -multi_module to the
- # link flags.
- rm -rf libconftest.dylib*
- echo "int foo(void){return 1;}" > conftest.c
- echo "$LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
--dynamiclib -Wl,-single_module conftest.c" >&AS_MESSAGE_LOG_FD
- $LTCC $LTCFLAGS $LDFLAGS -o libconftest.dylib \
- -dynamiclib -Wl,-single_module conftest.c 2>conftest.err
- _lt_result=$?
- # If there is a non-empty error log, and "single_module"
- # appears in it, assume the flag caused a linker warning
- if test -s conftest.err && $GREP single_module conftest.err; then
- cat conftest.err >&AS_MESSAGE_LOG_FD
- # Otherwise, if the output was created with a 0 exit code from
- # the compiler, it worked.
- elif test -f libconftest.dylib && test $_lt_result -eq 0; then
- lt_cv_apple_cc_single_mod=yes
- else
- cat conftest.err >&AS_MESSAGE_LOG_FD
- fi
- rm -rf libconftest.dylib*
- rm -f conftest.*
- fi])
-
- AC_CACHE_CHECK([for -exported_symbols_list linker flag],
- [lt_cv_ld_exported_symbols_list],
- [lt_cv_ld_exported_symbols_list=no
- save_LDFLAGS=$LDFLAGS
- echo "_main" > conftest.sym
- LDFLAGS="$LDFLAGS -Wl,-exported_symbols_list,conftest.sym"
- AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
- [lt_cv_ld_exported_symbols_list=yes],
- [lt_cv_ld_exported_symbols_list=no])
- LDFLAGS="$save_LDFLAGS"
- ])
-
- AC_CACHE_CHECK([for -force_load linker flag],[lt_cv_ld_force_load],
- [lt_cv_ld_force_load=no
- cat > conftest.c << _LT_EOF
-int forced_loaded() { return 2;}
-_LT_EOF
- echo "$LTCC $LTCFLAGS -c -o conftest.o conftest.c" >&AS_MESSAGE_LOG_FD
- $LTCC $LTCFLAGS -c -o conftest.o conftest.c 2>&AS_MESSAGE_LOG_FD
- echo "$AR cru libconftest.a conftest.o" >&AS_MESSAGE_LOG_FD
- $AR cru libconftest.a conftest.o 2>&AS_MESSAGE_LOG_FD
- echo "$RANLIB libconftest.a" >&AS_MESSAGE_LOG_FD
- $RANLIB libconftest.a 2>&AS_MESSAGE_LOG_FD
- cat > conftest.c << _LT_EOF
-int main() { return 0;}
-_LT_EOF
- echo "$LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a" >&AS_MESSAGE_LOG_FD
- $LTCC $LTCFLAGS $LDFLAGS -o conftest conftest.c -Wl,-force_load,./libconftest.a 2>conftest.err
- _lt_result=$?
- if test -s conftest.err && $GREP force_load conftest.err; then
- cat conftest.err >&AS_MESSAGE_LOG_FD
- elif test -f conftest && test $_lt_result -eq 0 && $GREP forced_load conftest >/dev/null 2>&1 ; then
- lt_cv_ld_force_load=yes
- else
- cat conftest.err >&AS_MESSAGE_LOG_FD
- fi
- rm -f conftest.err libconftest.a conftest conftest.c
- rm -rf conftest.dSYM
- ])
- case $host_os in
- rhapsody* | darwin1.[[012]])
- _lt_dar_allow_undefined='${wl}-undefined ${wl}suppress' ;;
- darwin1.*)
- _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
- darwin*) # darwin 5.x on
- # if running on 10.5 or later, the deployment target defaults
- # to the OS version, if on x86, and 10.4, the deployment
- # target defaults to 10.4. Don't you love it?
- case ${MACOSX_DEPLOYMENT_TARGET-10.0},$host in
- 10.0,*86*-darwin8*|10.0,*-darwin[[91]]*)
- _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
- 10.[[012]]*)
- _lt_dar_allow_undefined='${wl}-flat_namespace ${wl}-undefined ${wl}suppress' ;;
- 10.*)
- _lt_dar_allow_undefined='${wl}-undefined ${wl}dynamic_lookup' ;;
- esac
- ;;
- esac
- if test "$lt_cv_apple_cc_single_mod" = "yes"; then
- _lt_dar_single_mod='$single_module'
- fi
- if test "$lt_cv_ld_exported_symbols_list" = "yes"; then
- _lt_dar_export_syms=' ${wl}-exported_symbols_list,$output_objdir/${libname}-symbols.expsym'
- else
- _lt_dar_export_syms='~$NMEDIT -s $output_objdir/${libname}-symbols.expsym ${lib}'
- fi
- if test "$DSYMUTIL" != ":" && test "$lt_cv_ld_force_load" = "no"; then
- _lt_dsymutil='~$DSYMUTIL $lib || :'
- else
- _lt_dsymutil=
- fi
- ;;
- esac
-])
-
-
-# _LT_DARWIN_LINKER_FEATURES([TAG])
-# ---------------------------------
-# Checks for linker and compiler features on darwin
-m4_defun([_LT_DARWIN_LINKER_FEATURES],
-[
- m4_require([_LT_REQUIRED_DARWIN_CHECKS])
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- _LT_TAGVAR(hardcode_direct, $1)=no
- _LT_TAGVAR(hardcode_automatic, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
- if test "$lt_cv_ld_force_load" = "yes"; then
- _LT_TAGVAR(whole_archive_flag_spec, $1)='`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience ${wl}-force_load,$conv\"; done; func_echo_all \"$new_convenience\"`'
- m4_case([$1], [F77], [_LT_TAGVAR(compiler_needs_object, $1)=yes],
- [FC], [_LT_TAGVAR(compiler_needs_object, $1)=yes])
- else
- _LT_TAGVAR(whole_archive_flag_spec, $1)=''
- fi
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- _LT_TAGVAR(allow_undefined_flag, $1)="$_lt_dar_allow_undefined"
- case $cc_basename in
- ifort*) _lt_dar_can_shared=yes ;;
- *) _lt_dar_can_shared=$GCC ;;
- esac
- if test "$_lt_dar_can_shared" = "yes"; then
- output_verbose_link_cmd=func_echo_all
- _LT_TAGVAR(archive_cmds, $1)="\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring $_lt_dar_single_mod${_lt_dsymutil}"
- _LT_TAGVAR(module_cmds, $1)="\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dsymutil}"
- _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \$libobjs \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring ${_lt_dar_single_mod}${_lt_dar_export_syms}${_lt_dsymutil}"
- _LT_TAGVAR(module_expsym_cmds, $1)="sed -e 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC \$allow_undefined_flag -o \$lib -bundle \$libobjs \$deplibs \$compiler_flags${_lt_dar_export_syms}${_lt_dsymutil}"
- m4_if([$1], [CXX],
-[ if test "$lt_cv_apple_cc_single_mod" != "yes"; then
- _LT_TAGVAR(archive_cmds, $1)="\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dsymutil}"
- _LT_TAGVAR(archive_expsym_cmds, $1)="sed 's,^,_,' < \$export_symbols > \$output_objdir/\${libname}-symbols.expsym~\$CC -r -keep_private_externs -nostdlib -o \${lib}-master.o \$libobjs~\$CC -dynamiclib \$allow_undefined_flag -o \$lib \${lib}-master.o \$deplibs \$compiler_flags -install_name \$rpath/\$soname \$verstring${_lt_dar_export_syms}${_lt_dsymutil}"
- fi
-],[])
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
-])
-
-# _LT_SYS_MODULE_PATH_AIX([TAGNAME])
-# ----------------------------------
-# Links a minimal program and checks the executable
-# for the system default hardcoded library path. In most cases,
-# this is /usr/lib:/lib, but when the MPI compilers are used
-# the location of the communication and MPI libs are included too.
-# If we don't find anything, use the default library path according
-# to the aix ld manual.
-# Store the results from the different compilers for each TAGNAME.
-# Allow to override them for all tags through lt_cv_aix_libpath.
-m4_defun([_LT_SYS_MODULE_PATH_AIX],
-[m4_require([_LT_DECL_SED])dnl
-if test "${lt_cv_aix_libpath+set}" = set; then
- aix_libpath=$lt_cv_aix_libpath
-else
- AC_CACHE_VAL([_LT_TAGVAR([lt_cv_aix_libpath_], [$1])],
- [AC_LINK_IFELSE([AC_LANG_PROGRAM],[
- lt_aix_libpath_sed='[
- /Import File Strings/,/^$/ {
- /^0/ {
- s/^0 *\([^ ]*\) *$/\1/
- p
- }
- }]'
- _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -H conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
- # Check for a 64-bit object if we didn't find anything.
- if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then
- _LT_TAGVAR([lt_cv_aix_libpath_], [$1])=`dump -HX64 conftest$ac_exeext 2>/dev/null | $SED -n -e "$lt_aix_libpath_sed"`
- fi],[])
- if test -z "$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])"; then
- _LT_TAGVAR([lt_cv_aix_libpath_], [$1])="/usr/lib:/lib"
- fi
- ])
- aix_libpath=$_LT_TAGVAR([lt_cv_aix_libpath_], [$1])
-fi
-])# _LT_SYS_MODULE_PATH_AIX
-
-
-# _LT_SHELL_INIT(ARG)
-# -------------------
-m4_define([_LT_SHELL_INIT],
-[m4_divert_text([M4SH-INIT], [$1
-])])# _LT_SHELL_INIT
-
-
-
-# _LT_PROG_ECHO_BACKSLASH
-# -----------------------
-# Find how we can fake an echo command that does not interpret backslash.
-# In particular, with Autoconf 2.60 or later we add some code to the start
-# of the generated configure script which will find a shell with a builtin
-# printf (which we can use as an echo command).
-m4_defun([_LT_PROG_ECHO_BACKSLASH],
-[ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
-ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
-ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
-
-AC_MSG_CHECKING([how to print strings])
-# Test print first, because it will be a builtin if present.
-if test "X`( print -r -- -n ) 2>/dev/null`" = X-n && \
- test "X`print -r -- $ECHO 2>/dev/null`" = "X$ECHO"; then
- ECHO='print -r --'
-elif test "X`printf %s $ECHO 2>/dev/null`" = "X$ECHO"; then
- ECHO='printf %s\n'
-else
- # Use this function as a fallback that always works.
- func_fallback_echo ()
- {
- eval 'cat <<_LTECHO_EOF
-$[]1
-_LTECHO_EOF'
- }
- ECHO='func_fallback_echo'
-fi
-
-# func_echo_all arg...
-# Invoke $ECHO with all args, space-separated.
-func_echo_all ()
-{
- $ECHO "$*"
-}
-
-case "$ECHO" in
- printf*) AC_MSG_RESULT([printf]) ;;
- print*) AC_MSG_RESULT([print -r]) ;;
- *) AC_MSG_RESULT([cat]) ;;
-esac
-
-m4_ifdef([_AS_DETECT_SUGGESTED],
-[_AS_DETECT_SUGGESTED([
- test -n "${ZSH_VERSION+set}${BASH_VERSION+set}" || (
- ECHO='\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\\'
- ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO
- ECHO=$ECHO$ECHO$ECHO$ECHO$ECHO$ECHO
- PATH=/empty FPATH=/empty; export PATH FPATH
- test "X`printf %s $ECHO`" = "X$ECHO" \
- || test "X`print -r -- $ECHO`" = "X$ECHO" )])])
-
-_LT_DECL([], [SHELL], [1], [Shell to use when invoking shell scripts])
-_LT_DECL([], [ECHO], [1], [An echo program that protects backslashes])
-])# _LT_PROG_ECHO_BACKSLASH
-
-
-# _LT_WITH_SYSROOT
-# ----------------
-AC_DEFUN([_LT_WITH_SYSROOT],
-[AC_MSG_CHECKING([for sysroot])
-AC_ARG_WITH([sysroot],
-[ --with-sysroot[=DIR] Search for dependent libraries within DIR
- (or the compiler's sysroot if not specified).],
-[], [with_sysroot=no])
-
-dnl lt_sysroot will always be passed unquoted. We quote it here
-dnl in case the user passed a directory name.
-lt_sysroot=
-case ${with_sysroot} in #(
- yes)
- if test "$GCC" = yes; then
- lt_sysroot=`$CC --print-sysroot 2>/dev/null`
- fi
- ;; #(
- /*)
- lt_sysroot=`echo "$with_sysroot" | sed -e "$sed_quote_subst"`
- ;; #(
- no|'')
- ;; #(
- *)
- AC_MSG_RESULT([${with_sysroot}])
- AC_MSG_ERROR([The sysroot must be an absolute path.])
- ;;
-esac
-
- AC_MSG_RESULT([${lt_sysroot:-no}])
-_LT_DECL([], [lt_sysroot], [0], [The root where to search for ]dnl
-[dependent libraries, and in which our libraries should be installed.])])
-
-# _LT_ENABLE_LOCK
-# ---------------
-m4_defun([_LT_ENABLE_LOCK],
-[AC_ARG_ENABLE([libtool-lock],
- [AS_HELP_STRING([--disable-libtool-lock],
- [avoid locking (might break parallel builds)])])
-test "x$enable_libtool_lock" != xno && enable_libtool_lock=yes
-
-# Some flags need to be propagated to the compiler or linker for good
-# libtool support.
-case $host in
-ia64-*-hpux*)
- # Find out which ABI we are using.
- echo 'int i;' > conftest.$ac_ext
- if AC_TRY_EVAL(ac_compile); then
- case `/usr/bin/file conftest.$ac_objext` in
- *ELF-32*)
- HPUX_IA64_MODE="32"
- ;;
- *ELF-64*)
- HPUX_IA64_MODE="64"
- ;;
- esac
- fi
- rm -rf conftest*
- ;;
-*-*-irix6*)
- # Find out which ABI we are using.
- echo '[#]line '$LINENO' "configure"' > conftest.$ac_ext
- if AC_TRY_EVAL(ac_compile); then
- if test "$lt_cv_prog_gnu_ld" = yes; then
- case `/usr/bin/file conftest.$ac_objext` in
- *32-bit*)
- LD="${LD-ld} -melf32bsmip"
- ;;
- *N32*)
- LD="${LD-ld} -melf32bmipn32"
- ;;
- *64-bit*)
- LD="${LD-ld} -melf64bmip"
- ;;
- esac
- else
- case `/usr/bin/file conftest.$ac_objext` in
- *32-bit*)
- LD="${LD-ld} -32"
- ;;
- *N32*)
- LD="${LD-ld} -n32"
- ;;
- *64-bit*)
- LD="${LD-ld} -64"
- ;;
- esac
- fi
- fi
- rm -rf conftest*
- ;;
-
-x86_64-*kfreebsd*-gnu|x86_64-*linux*|ppc*-*linux*|powerpc*-*linux*| \
-s390*-*linux*|s390*-*tpf*|sparc*-*linux*)
- # Find out which ABI we are using.
- echo 'int i;' > conftest.$ac_ext
- if AC_TRY_EVAL(ac_compile); then
- case `/usr/bin/file conftest.o` in
- *32-bit*)
- case $host in
- x86_64-*kfreebsd*-gnu)
- LD="${LD-ld} -m elf_i386_fbsd"
- ;;
- x86_64-*linux*)
- LD="${LD-ld} -m elf_i386"
- ;;
- ppc64-*linux*|powerpc64-*linux*)
- LD="${LD-ld} -m elf32ppclinux"
- ;;
- s390x-*linux*)
- LD="${LD-ld} -m elf_s390"
- ;;
- sparc64-*linux*)
- LD="${LD-ld} -m elf32_sparc"
- ;;
- esac
- ;;
- *64-bit*)
- case $host in
- x86_64-*kfreebsd*-gnu)
- LD="${LD-ld} -m elf_x86_64_fbsd"
- ;;
- x86_64-*linux*)
- LD="${LD-ld} -m elf_x86_64"
- ;;
- ppc*-*linux*|powerpc*-*linux*)
- LD="${LD-ld} -m elf64ppc"
- ;;
- s390*-*linux*|s390*-*tpf*)
- LD="${LD-ld} -m elf64_s390"
- ;;
- sparc*-*linux*)
- LD="${LD-ld} -m elf64_sparc"
- ;;
- esac
- ;;
- esac
- fi
- rm -rf conftest*
- ;;
-
-*-*-sco3.2v5*)
- # On SCO OpenServer 5, we need -belf to get full-featured binaries.
- SAVE_CFLAGS="$CFLAGS"
- CFLAGS="$CFLAGS -belf"
- AC_CACHE_CHECK([whether the C compiler needs -belf], lt_cv_cc_needs_belf,
- [AC_LANG_PUSH(C)
- AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[]])],[lt_cv_cc_needs_belf=yes],[lt_cv_cc_needs_belf=no])
- AC_LANG_POP])
- if test x"$lt_cv_cc_needs_belf" != x"yes"; then
- # this is probably gcc 2.8.0, egcs 1.0 or newer; no need for -belf
- CFLAGS="$SAVE_CFLAGS"
- fi
- ;;
-*-*solaris*)
- # Find out which ABI we are using.
- echo 'int i;' > conftest.$ac_ext
- if AC_TRY_EVAL(ac_compile); then
- case `/usr/bin/file conftest.o` in
- *64-bit*)
- case $lt_cv_prog_gnu_ld in
- yes*)
- case $host in
- i?86-*-solaris*)
- LD="${LD-ld} -m elf_x86_64"
- ;;
- sparc*-*-solaris*)
- LD="${LD-ld} -m elf64_sparc"
- ;;
- esac
- # GNU ld 2.21 introduced _sol2 emulations. Use them if available.
- if ${LD-ld} -V | grep _sol2 >/dev/null 2>&1; then
- LD="${LD-ld}_sol2"
- fi
- ;;
- *)
- if ${LD-ld} -64 -r -o conftest2.o conftest.o >/dev/null 2>&1; then
- LD="${LD-ld} -64"
- fi
- ;;
- esac
- ;;
- esac
- fi
- rm -rf conftest*
- ;;
-esac
-
-need_locks="$enable_libtool_lock"
-])# _LT_ENABLE_LOCK
-
-
-# _LT_PROG_AR
-# -----------
-m4_defun([_LT_PROG_AR],
-[AC_CHECK_TOOLS(AR, [ar], false)
-: ${AR=ar}
-: ${AR_FLAGS=cru}
-_LT_DECL([], [AR], [1], [The archiver])
-_LT_DECL([], [AR_FLAGS], [1], [Flags to create an archive])
-
-AC_CACHE_CHECK([for archiver @FILE support], [lt_cv_ar_at_file],
- [lt_cv_ar_at_file=no
- AC_COMPILE_IFELSE([AC_LANG_PROGRAM],
- [echo conftest.$ac_objext > conftest.lst
- lt_ar_try='$AR $AR_FLAGS libconftest.a @conftest.lst >&AS_MESSAGE_LOG_FD'
- AC_TRY_EVAL([lt_ar_try])
- if test "$ac_status" -eq 0; then
- # Ensure the archiver fails upon bogus file names.
- rm -f conftest.$ac_objext libconftest.a
- AC_TRY_EVAL([lt_ar_try])
- if test "$ac_status" -ne 0; then
- lt_cv_ar_at_file=@
- fi
- fi
- rm -f conftest.* libconftest.a
- ])
- ])
-
-if test "x$lt_cv_ar_at_file" = xno; then
- archiver_list_spec=
-else
- archiver_list_spec=$lt_cv_ar_at_file
-fi
-_LT_DECL([], [archiver_list_spec], [1],
- [How to feed a file listing to the archiver])
-])# _LT_PROG_AR
-
-
-# _LT_CMD_OLD_ARCHIVE
-# -------------------
-m4_defun([_LT_CMD_OLD_ARCHIVE],
-[_LT_PROG_AR
-
-AC_CHECK_TOOL(STRIP, strip, :)
-test -z "$STRIP" && STRIP=:
-_LT_DECL([], [STRIP], [1], [A symbol stripping program])
-
-AC_CHECK_TOOL(RANLIB, ranlib, :)
-test -z "$RANLIB" && RANLIB=:
-_LT_DECL([], [RANLIB], [1],
- [Commands used to install an old-style archive])
-
-# Determine commands to create old-style static archives.
-old_archive_cmds='$AR $AR_FLAGS $oldlib$oldobjs'
-old_postinstall_cmds='chmod 644 $oldlib'
-old_postuninstall_cmds=
-
-if test -n "$RANLIB"; then
- case $host_os in
- openbsd*)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB -t \$tool_oldlib"
- ;;
- *)
- old_postinstall_cmds="$old_postinstall_cmds~\$RANLIB \$tool_oldlib"
- ;;
- esac
- old_archive_cmds="$old_archive_cmds~\$RANLIB \$tool_oldlib"
-fi
-
-case $host_os in
- darwin*)
- lock_old_archive_extraction=yes ;;
- *)
- lock_old_archive_extraction=no ;;
-esac
-_LT_DECL([], [old_postinstall_cmds], [2])
-_LT_DECL([], [old_postuninstall_cmds], [2])
-_LT_TAGDECL([], [old_archive_cmds], [2],
- [Commands used to build an old-style archive])
-_LT_DECL([], [lock_old_archive_extraction], [0],
- [Whether to use a lock for old archive extraction])
-])# _LT_CMD_OLD_ARCHIVE
-
-
-# _LT_COMPILER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
-# [OUTPUT-FILE], [ACTION-SUCCESS], [ACTION-FAILURE])
-# ----------------------------------------------------------------
-# Check whether the given compiler option works
-AC_DEFUN([_LT_COMPILER_OPTION],
-[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-m4_require([_LT_DECL_SED])dnl
-AC_CACHE_CHECK([$1], [$2],
- [$2=no
- m4_if([$4], , [ac_outfile=conftest.$ac_objext], [ac_outfile=$4])
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
- lt_compiler_flag="$3"
- # Insert the option either (1) after the last *FLAGS variable, or
- # (2) before a word containing "conftest.", or (3) at the end.
- # Note that $ac_compile itself does not contain backslashes and begins
- # with a dollar sign (not a hyphen), so the echo should work correctly.
- # The option is referenced via a variable to avoid confusing sed.
- lt_compile=`echo "$ac_compile" | $SED \
- -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
- -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
- -e 's:$: $lt_compiler_flag:'`
- (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
- (eval "$lt_compile" 2>conftest.err)
- ac_status=$?
- cat conftest.err >&AS_MESSAGE_LOG_FD
- echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
- if (exit $ac_status) && test -s "$ac_outfile"; then
- # The compiler can only warn and ignore the option if not recognized
- # So say no if there are warnings other than the usual output.
- $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' >conftest.exp
- $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
- if test ! -s conftest.er2 || diff conftest.exp conftest.er2 >/dev/null; then
- $2=yes
- fi
- fi
- $RM conftest*
-])
-
-if test x"[$]$2" = xyes; then
- m4_if([$5], , :, [$5])
-else
- m4_if([$6], , :, [$6])
-fi
-])# _LT_COMPILER_OPTION
-
-# Old name:
-AU_ALIAS([AC_LIBTOOL_COMPILER_OPTION], [_LT_COMPILER_OPTION])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_COMPILER_OPTION], [])
-
-
-# _LT_LINKER_OPTION(MESSAGE, VARIABLE-NAME, FLAGS,
-# [ACTION-SUCCESS], [ACTION-FAILURE])
-# ----------------------------------------------------
-# Check whether the given linker option works
-AC_DEFUN([_LT_LINKER_OPTION],
-[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-m4_require([_LT_DECL_SED])dnl
-AC_CACHE_CHECK([$1], [$2],
- [$2=no
- save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS $3"
- echo "$lt_simple_link_test_code" > conftest.$ac_ext
- if (eval $ac_link 2>conftest.err) && test -s conftest$ac_exeext; then
- # The linker can only warn and ignore the option if not recognized
- # So say no if there are warnings
- if test -s conftest.err; then
- # Append any errors to the config.log.
- cat conftest.err 1>&AS_MESSAGE_LOG_FD
- $ECHO "$_lt_linker_boilerplate" | $SED '/^$/d' > conftest.exp
- $SED '/^$/d; /^ *+/d' conftest.err >conftest.er2
- if diff conftest.exp conftest.er2 >/dev/null; then
- $2=yes
- fi
- else
- $2=yes
- fi
- fi
- $RM -r conftest*
- LDFLAGS="$save_LDFLAGS"
-])
-
-if test x"[$]$2" = xyes; then
- m4_if([$4], , :, [$4])
-else
- m4_if([$5], , :, [$5])
-fi
-])# _LT_LINKER_OPTION
-
-# Old name:
-AU_ALIAS([AC_LIBTOOL_LINKER_OPTION], [_LT_LINKER_OPTION])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_LINKER_OPTION], [])
-
-
-# LT_CMD_MAX_LEN
-#---------------
-AC_DEFUN([LT_CMD_MAX_LEN],
-[AC_REQUIRE([AC_CANONICAL_HOST])dnl
-# find the maximum length of command line arguments
-AC_MSG_CHECKING([the maximum length of command line arguments])
-AC_CACHE_VAL([lt_cv_sys_max_cmd_len], [dnl
- i=0
- teststring="ABCD"
-
- case $build_os in
- msdosdjgpp*)
- # On DJGPP, this test can blow up pretty badly due to problems in libc
- # (any single argument exceeding 2000 bytes causes a buffer overrun
- # during glob expansion). Even if it were fixed, the result of this
- # check would be larger than it should be.
- lt_cv_sys_max_cmd_len=12288; # 12K is about right
- ;;
-
- gnu*)
- # Under GNU Hurd, this test is not required because there is
- # no limit to the length of command line arguments.
- # Libtool will interpret -1 as no limit whatsoever
- lt_cv_sys_max_cmd_len=-1;
- ;;
-
- cygwin* | mingw* | cegcc*)
- # On Win9x/ME, this test blows up -- it succeeds, but takes
- # about 5 minutes as the teststring grows exponentially.
- # Worse, since 9x/ME are not pre-emptively multitasking,
- # you end up with a "frozen" computer, even though with patience
- # the test eventually succeeds (with a max line length of 256k).
- # Instead, let's just punt: use the minimum linelength reported by
- # all of the supported platforms: 8192 (on NT/2K/XP).
- lt_cv_sys_max_cmd_len=8192;
- ;;
-
- mint*)
- # On MiNT this can take a long time and run out of memory.
- lt_cv_sys_max_cmd_len=8192;
- ;;
-
- amigaos*)
- # On AmigaOS with pdksh, this test takes hours, literally.
- # So we just punt and use a minimum line length of 8192.
- lt_cv_sys_max_cmd_len=8192;
- ;;
-
- netbsd* | freebsd* | openbsd* | darwin* | dragonfly*)
- # This has been around since 386BSD, at least. Likely further.
- if test -x /sbin/sysctl; then
- lt_cv_sys_max_cmd_len=`/sbin/sysctl -n kern.argmax`
- elif test -x /usr/sbin/sysctl; then
- lt_cv_sys_max_cmd_len=`/usr/sbin/sysctl -n kern.argmax`
- else
- lt_cv_sys_max_cmd_len=65536 # usable default for all BSDs
- fi
- # And add a safety zone
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
- ;;
-
- interix*)
- # We know the value 262144 and hardcode it with a safety zone (like BSD)
- lt_cv_sys_max_cmd_len=196608
- ;;
-
- os2*)
- # The test takes a long time on OS/2.
- lt_cv_sys_max_cmd_len=8192
- ;;
-
- osf*)
- # Dr. Hans Ekkehard Plesser reports seeing a kernel panic running configure
- # due to this test when exec_disable_arg_limit is 1 on Tru64. It is not
- # nice to cause kernel panics so lets avoid the loop below.
- # First set a reasonable default.
- lt_cv_sys_max_cmd_len=16384
- #
- if test -x /sbin/sysconfig; then
- case `/sbin/sysconfig -q proc exec_disable_arg_limit` in
- *1*) lt_cv_sys_max_cmd_len=-1 ;;
- esac
- fi
- ;;
- sco3.2v5*)
- lt_cv_sys_max_cmd_len=102400
- ;;
- sysv5* | sco5v6* | sysv4.2uw2*)
- kargmax=`grep ARG_MAX /etc/conf/cf.d/stune 2>/dev/null`
- if test -n "$kargmax"; then
- lt_cv_sys_max_cmd_len=`echo $kargmax | sed 's/.*[[ ]]//'`
- else
- lt_cv_sys_max_cmd_len=32768
- fi
- ;;
- *)
- lt_cv_sys_max_cmd_len=`(getconf ARG_MAX) 2> /dev/null`
- if test -n "$lt_cv_sys_max_cmd_len"; then
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 4`
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \* 3`
- else
- # Make teststring a little bigger before we do anything with it.
- # a 1K string should be a reasonable start.
- for i in 1 2 3 4 5 6 7 8 ; do
- teststring=$teststring$teststring
- done
- SHELL=${SHELL-${CONFIG_SHELL-/bin/sh}}
- # If test is not a shell built-in, we'll probably end up computing a
- # maximum length that is only half of the actual maximum length, but
- # we can't tell.
- while { test "X"`env echo "$teststring$teststring" 2>/dev/null` \
- = "X$teststring$teststring"; } >/dev/null 2>&1 &&
- test $i != 17 # 1/2 MB should be enough
- do
- i=`expr $i + 1`
- teststring=$teststring$teststring
- done
- # Only check the string length outside the loop.
- lt_cv_sys_max_cmd_len=`expr "X$teststring" : ".*" 2>&1`
- teststring=
- # Add a significant safety factor because C++ compilers can tack on
- # massive amounts of additional arguments before passing them to the
- # linker. It appears as though 1/2 is a usable value.
- lt_cv_sys_max_cmd_len=`expr $lt_cv_sys_max_cmd_len \/ 2`
- fi
- ;;
- esac
-])
-if test -n $lt_cv_sys_max_cmd_len ; then
- AC_MSG_RESULT($lt_cv_sys_max_cmd_len)
-else
- AC_MSG_RESULT(none)
-fi
-max_cmd_len=$lt_cv_sys_max_cmd_len
-_LT_DECL([], [max_cmd_len], [0],
- [What is the maximum length of a command?])
-])# LT_CMD_MAX_LEN
-
-# Old name:
-AU_ALIAS([AC_LIBTOOL_SYS_MAX_CMD_LEN], [LT_CMD_MAX_LEN])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_SYS_MAX_CMD_LEN], [])
-
-
-# _LT_HEADER_DLFCN
-# ----------------
-m4_defun([_LT_HEADER_DLFCN],
-[AC_CHECK_HEADERS([dlfcn.h], [], [], [AC_INCLUDES_DEFAULT])dnl
-])# _LT_HEADER_DLFCN
-
-
-# _LT_TRY_DLOPEN_SELF (ACTION-IF-TRUE, ACTION-IF-TRUE-W-USCORE,
-# ACTION-IF-FALSE, ACTION-IF-CROSS-COMPILING)
-# ----------------------------------------------------------------
-m4_defun([_LT_TRY_DLOPEN_SELF],
-[m4_require([_LT_HEADER_DLFCN])dnl
-if test "$cross_compiling" = yes; then :
- [$4]
-else
- lt_dlunknown=0; lt_dlno_uscore=1; lt_dlneed_uscore=2
- lt_status=$lt_dlunknown
- cat > conftest.$ac_ext <<_LT_EOF
-[#line $LINENO "configure"
-#include "confdefs.h"
-
-#if HAVE_DLFCN_H
-#include <dlfcn.h>
-#endif
-
-#include <stdio.h>
-
-#ifdef RTLD_GLOBAL
-# define LT_DLGLOBAL RTLD_GLOBAL
-#else
-# ifdef DL_GLOBAL
-# define LT_DLGLOBAL DL_GLOBAL
-# else
-# define LT_DLGLOBAL 0
-# endif
-#endif
-
-/* We may have to define LT_DLLAZY_OR_NOW in the command line if we
- find out it does not work in some platform. */
-#ifndef LT_DLLAZY_OR_NOW
-# ifdef RTLD_LAZY
-# define LT_DLLAZY_OR_NOW RTLD_LAZY
-# else
-# ifdef DL_LAZY
-# define LT_DLLAZY_OR_NOW DL_LAZY
-# else
-# ifdef RTLD_NOW
-# define LT_DLLAZY_OR_NOW RTLD_NOW
-# else
-# ifdef DL_NOW
-# define LT_DLLAZY_OR_NOW DL_NOW
-# else
-# define LT_DLLAZY_OR_NOW 0
-# endif
-# endif
-# endif
-# endif
-#endif
-
-/* When -fvisbility=hidden is used, assume the code has been annotated
- correspondingly for the symbols needed. */
-#if defined(__GNUC__) && (((__GNUC__ == 3) && (__GNUC_MINOR__ >= 3)) || (__GNUC__ > 3))
-int fnord () __attribute__((visibility("default")));
-#endif
-
-int fnord () { return 42; }
-int main ()
-{
- void *self = dlopen (0, LT_DLGLOBAL|LT_DLLAZY_OR_NOW);
- int status = $lt_dlunknown;
-
- if (self)
- {
- if (dlsym (self,"fnord")) status = $lt_dlno_uscore;
- else
- {
- if (dlsym( self,"_fnord")) status = $lt_dlneed_uscore;
- else puts (dlerror ());
- }
- /* dlclose (self); */
- }
- else
- puts (dlerror ());
-
- return status;
-}]
-_LT_EOF
- if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext} 2>/dev/null; then
- (./conftest; exit; ) >&AS_MESSAGE_LOG_FD 2>/dev/null
- lt_status=$?
- case x$lt_status in
- x$lt_dlno_uscore) $1 ;;
- x$lt_dlneed_uscore) $2 ;;
- x$lt_dlunknown|x*) $3 ;;
- esac
- else :
- # compilation failed
- $3
- fi
-fi
-rm -fr conftest*
-])# _LT_TRY_DLOPEN_SELF
-
-
-# LT_SYS_DLOPEN_SELF
-# ------------------
-AC_DEFUN([LT_SYS_DLOPEN_SELF],
-[m4_require([_LT_HEADER_DLFCN])dnl
-if test "x$enable_dlopen" != xyes; then
- enable_dlopen=unknown
- enable_dlopen_self=unknown
- enable_dlopen_self_static=unknown
-else
- lt_cv_dlopen=no
- lt_cv_dlopen_libs=
-
- case $host_os in
- beos*)
- lt_cv_dlopen="load_add_on"
- lt_cv_dlopen_libs=
- lt_cv_dlopen_self=yes
- ;;
-
- mingw* | pw32* | cegcc*)
- lt_cv_dlopen="LoadLibrary"
- lt_cv_dlopen_libs=
- ;;
-
- cygwin*)
- lt_cv_dlopen="dlopen"
- lt_cv_dlopen_libs=
- ;;
-
- darwin*)
- # if libdl is installed we need to link against it
- AC_CHECK_LIB([dl], [dlopen],
- [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],[
- lt_cv_dlopen="dyld"
- lt_cv_dlopen_libs=
- lt_cv_dlopen_self=yes
- ])
- ;;
-
- *)
- AC_CHECK_FUNC([shl_load],
- [lt_cv_dlopen="shl_load"],
- [AC_CHECK_LIB([dld], [shl_load],
- [lt_cv_dlopen="shl_load" lt_cv_dlopen_libs="-ldld"],
- [AC_CHECK_FUNC([dlopen],
- [lt_cv_dlopen="dlopen"],
- [AC_CHECK_LIB([dl], [dlopen],
- [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-ldl"],
- [AC_CHECK_LIB([svld], [dlopen],
- [lt_cv_dlopen="dlopen" lt_cv_dlopen_libs="-lsvld"],
- [AC_CHECK_LIB([dld], [dld_link],
- [lt_cv_dlopen="dld_link" lt_cv_dlopen_libs="-ldld"])
- ])
- ])
- ])
- ])
- ])
- ;;
- esac
-
- if test "x$lt_cv_dlopen" != xno; then
- enable_dlopen=yes
- else
- enable_dlopen=no
- fi
-
- case $lt_cv_dlopen in
- dlopen)
- save_CPPFLAGS="$CPPFLAGS"
- test "x$ac_cv_header_dlfcn_h" = xyes && CPPFLAGS="$CPPFLAGS -DHAVE_DLFCN_H"
-
- save_LDFLAGS="$LDFLAGS"
- wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $export_dynamic_flag_spec\"
-
- save_LIBS="$LIBS"
- LIBS="$lt_cv_dlopen_libs $LIBS"
-
- AC_CACHE_CHECK([whether a program can dlopen itself],
- lt_cv_dlopen_self, [dnl
- _LT_TRY_DLOPEN_SELF(
- lt_cv_dlopen_self=yes, lt_cv_dlopen_self=yes,
- lt_cv_dlopen_self=no, lt_cv_dlopen_self=cross)
- ])
-
- if test "x$lt_cv_dlopen_self" = xyes; then
- wl=$lt_prog_compiler_wl eval LDFLAGS=\"\$LDFLAGS $lt_prog_compiler_static\"
- AC_CACHE_CHECK([whether a statically linked program can dlopen itself],
- lt_cv_dlopen_self_static, [dnl
- _LT_TRY_DLOPEN_SELF(
- lt_cv_dlopen_self_static=yes, lt_cv_dlopen_self_static=yes,
- lt_cv_dlopen_self_static=no, lt_cv_dlopen_self_static=cross)
- ])
- fi
-
- CPPFLAGS="$save_CPPFLAGS"
- LDFLAGS="$save_LDFLAGS"
- LIBS="$save_LIBS"
- ;;
- esac
-
- case $lt_cv_dlopen_self in
- yes|no) enable_dlopen_self=$lt_cv_dlopen_self ;;
- *) enable_dlopen_self=unknown ;;
- esac
-
- case $lt_cv_dlopen_self_static in
- yes|no) enable_dlopen_self_static=$lt_cv_dlopen_self_static ;;
- *) enable_dlopen_self_static=unknown ;;
- esac
-fi
-_LT_DECL([dlopen_support], [enable_dlopen], [0],
- [Whether dlopen is supported])
-_LT_DECL([dlopen_self], [enable_dlopen_self], [0],
- [Whether dlopen of programs is supported])
-_LT_DECL([dlopen_self_static], [enable_dlopen_self_static], [0],
- [Whether dlopen of statically linked programs is supported])
-])# LT_SYS_DLOPEN_SELF
-
-# Old name:
-AU_ALIAS([AC_LIBTOOL_DLOPEN_SELF], [LT_SYS_DLOPEN_SELF])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_DLOPEN_SELF], [])
-
-
-# _LT_COMPILER_C_O([TAGNAME])
-# ---------------------------
-# Check to see if options -c and -o are simultaneously supported by compiler.
-# This macro does not hard code the compiler like AC_PROG_CC_C_O.
-m4_defun([_LT_COMPILER_C_O],
-[m4_require([_LT_DECL_SED])dnl
-m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-m4_require([_LT_TAG_COMPILER])dnl
-AC_CACHE_CHECK([if $compiler supports -c -o file.$ac_objext],
- [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)],
- [_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=no
- $RM -r conftest 2>/dev/null
- mkdir conftest
- cd conftest
- mkdir out
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
-
- lt_compiler_flag="-o out/conftest2.$ac_objext"
- # Insert the option either (1) after the last *FLAGS variable, or
- # (2) before a word containing "conftest.", or (3) at the end.
- # Note that $ac_compile itself does not contain backslashes and begins
- # with a dollar sign (not a hyphen), so the echo should work correctly.
- lt_compile=`echo "$ac_compile" | $SED \
- -e 's:.*FLAGS}\{0,1\} :&$lt_compiler_flag :; t' \
- -e 's: [[^ ]]*conftest\.: $lt_compiler_flag&:; t' \
- -e 's:$: $lt_compiler_flag:'`
- (eval echo "\"\$as_me:$LINENO: $lt_compile\"" >&AS_MESSAGE_LOG_FD)
- (eval "$lt_compile" 2>out/conftest.err)
- ac_status=$?
- cat out/conftest.err >&AS_MESSAGE_LOG_FD
- echo "$as_me:$LINENO: \$? = $ac_status" >&AS_MESSAGE_LOG_FD
- if (exit $ac_status) && test -s out/conftest2.$ac_objext
- then
- # The compiler can only warn and ignore the option if not recognized
- # So say no if there are warnings
- $ECHO "$_lt_compiler_boilerplate" | $SED '/^$/d' > out/conftest.exp
- $SED '/^$/d; /^ *+/d' out/conftest.err >out/conftest.er2
- if test ! -s out/conftest.er2 || diff out/conftest.exp out/conftest.er2 >/dev/null; then
- _LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)=yes
- fi
- fi
- chmod u+w . 2>&AS_MESSAGE_LOG_FD
- $RM conftest*
- # SGI C++ compiler will create directory out/ii_files/ for
- # template instantiation
- test -d out/ii_files && $RM out/ii_files/* && rmdir out/ii_files
- $RM out/* && rmdir out
- cd ..
- $RM -r conftest
- $RM conftest*
-])
-_LT_TAGDECL([compiler_c_o], [lt_cv_prog_compiler_c_o], [1],
- [Does compiler simultaneously support -c and -o options?])
-])# _LT_COMPILER_C_O
-
-
-# _LT_COMPILER_FILE_LOCKS([TAGNAME])
-# ----------------------------------
-# Check to see if we can do hard links to lock some files if needed
-m4_defun([_LT_COMPILER_FILE_LOCKS],
-[m4_require([_LT_ENABLE_LOCK])dnl
-m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-_LT_COMPILER_C_O([$1])
-
-hard_links="nottested"
-if test "$_LT_TAGVAR(lt_cv_prog_compiler_c_o, $1)" = no && test "$need_locks" != no; then
- # do not overwrite the value of need_locks provided by the user
- AC_MSG_CHECKING([if we can lock with hard links])
- hard_links=yes
- $RM conftest*
- ln conftest.a conftest.b 2>/dev/null && hard_links=no
- touch conftest.a
- ln conftest.a conftest.b 2>&5 || hard_links=no
- ln conftest.a conftest.b 2>/dev/null && hard_links=no
- AC_MSG_RESULT([$hard_links])
- if test "$hard_links" = no; then
- AC_MSG_WARN([`$CC' does not support `-c -o', so `make -j' may be unsafe])
- need_locks=warn
- fi
-else
- need_locks=no
-fi
-_LT_DECL([], [need_locks], [1], [Must we lock files when doing compilation?])
-])# _LT_COMPILER_FILE_LOCKS
-
-
-# _LT_CHECK_OBJDIR
-# ----------------
-m4_defun([_LT_CHECK_OBJDIR],
-[AC_CACHE_CHECK([for objdir], [lt_cv_objdir],
-[rm -f .libs 2>/dev/null
-mkdir .libs 2>/dev/null
-if test -d .libs; then
- lt_cv_objdir=.libs
-else
- # MS-DOS does not allow filenames that begin with a dot.
- lt_cv_objdir=_libs
-fi
-rmdir .libs 2>/dev/null])
-objdir=$lt_cv_objdir
-_LT_DECL([], [objdir], [0],
- [The name of the directory that contains temporary libtool files])dnl
-m4_pattern_allow([LT_OBJDIR])dnl
-AC_DEFINE_UNQUOTED(LT_OBJDIR, "$lt_cv_objdir/",
- [Define to the sub-directory in which libtool stores uninstalled libraries.])
-])# _LT_CHECK_OBJDIR
-
-
-# _LT_LINKER_HARDCODE_LIBPATH([TAGNAME])
-# --------------------------------------
-# Check hardcoding attributes.
-m4_defun([_LT_LINKER_HARDCODE_LIBPATH],
-[AC_MSG_CHECKING([how to hardcode library paths into programs])
-_LT_TAGVAR(hardcode_action, $1)=
-if test -n "$_LT_TAGVAR(hardcode_libdir_flag_spec, $1)" ||
- test -n "$_LT_TAGVAR(runpath_var, $1)" ||
- test "X$_LT_TAGVAR(hardcode_automatic, $1)" = "Xyes" ; then
-
- # We can hardcode non-existent directories.
- if test "$_LT_TAGVAR(hardcode_direct, $1)" != no &&
- # If the only mechanism to avoid hardcoding is shlibpath_var, we
- # have to relink, otherwise we might link with an installed library
- # when we should be linking with a yet-to-be-installed one
- ## test "$_LT_TAGVAR(hardcode_shlibpath_var, $1)" != no &&
- test "$_LT_TAGVAR(hardcode_minus_L, $1)" != no; then
- # Linking always hardcodes the temporary library directory.
- _LT_TAGVAR(hardcode_action, $1)=relink
- else
- # We can link without hardcoding, and we can hardcode nonexisting dirs.
- _LT_TAGVAR(hardcode_action, $1)=immediate
- fi
-else
- # We cannot hardcode anything, or else we can only hardcode existing
- # directories.
- _LT_TAGVAR(hardcode_action, $1)=unsupported
-fi
-AC_MSG_RESULT([$_LT_TAGVAR(hardcode_action, $1)])
-
-if test "$_LT_TAGVAR(hardcode_action, $1)" = relink ||
- test "$_LT_TAGVAR(inherit_rpath, $1)" = yes; then
- # Fast installation is not supported
- enable_fast_install=no
-elif test "$shlibpath_overrides_runpath" = yes ||
- test "$enable_shared" = no; then
- # Fast installation is not necessary
- enable_fast_install=needless
-fi
-_LT_TAGDECL([], [hardcode_action], [0],
- [How to hardcode a shared library path into an executable])
-])# _LT_LINKER_HARDCODE_LIBPATH
-
-
-# _LT_CMD_STRIPLIB
-# ----------------
-m4_defun([_LT_CMD_STRIPLIB],
-[m4_require([_LT_DECL_EGREP])
-striplib=
-old_striplib=
-AC_MSG_CHECKING([whether stripping libraries is possible])
-if test -n "$STRIP" && $STRIP -V 2>&1 | $GREP "GNU strip" >/dev/null; then
- test -z "$old_striplib" && old_striplib="$STRIP --strip-debug"
- test -z "$striplib" && striplib="$STRIP --strip-unneeded"
- AC_MSG_RESULT([yes])
-else
-# FIXME - insert some real tests, host_os isn't really good enough
- case $host_os in
- darwin*)
- if test -n "$STRIP" ; then
- striplib="$STRIP -x"
- old_striplib="$STRIP -S"
- AC_MSG_RESULT([yes])
- else
- AC_MSG_RESULT([no])
- fi
- ;;
- *)
- AC_MSG_RESULT([no])
- ;;
- esac
-fi
-_LT_DECL([], [old_striplib], [1], [Commands to strip libraries])
-_LT_DECL([], [striplib], [1])
-])# _LT_CMD_STRIPLIB
-
-
-# _LT_SYS_DYNAMIC_LINKER([TAG])
-# -----------------------------
-# PORTME Fill in your ld.so characteristics
-m4_defun([_LT_SYS_DYNAMIC_LINKER],
-[AC_REQUIRE([AC_CANONICAL_HOST])dnl
-m4_require([_LT_DECL_EGREP])dnl
-m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-m4_require([_LT_DECL_OBJDUMP])dnl
-m4_require([_LT_DECL_SED])dnl
-m4_require([_LT_CHECK_SHELL_FEATURES])dnl
-AC_MSG_CHECKING([dynamic linker characteristics])
-m4_if([$1],
- [], [
-if test "$GCC" = yes; then
- case $host_os in
- darwin*) lt_awk_arg="/^libraries:/,/LR/" ;;
- *) lt_awk_arg="/^libraries:/" ;;
- esac
- case $host_os in
- mingw* | cegcc*) lt_sed_strip_eq="s,=\([[A-Za-z]]:\),\1,g" ;;
- *) lt_sed_strip_eq="s,=/,/,g" ;;
- esac
- lt_search_path_spec=`$CC -print-search-dirs | awk $lt_awk_arg | $SED -e "s/^libraries://" -e $lt_sed_strip_eq`
- case $lt_search_path_spec in
- *\;*)
- # if the path contains ";" then we assume it to be the separator
- # otherwise default to the standard path separator (i.e. ":") - it is
- # assumed that no part of a normal pathname contains ";" but that should
- # okay in the real world where ";" in dirpaths is itself problematic.
- lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED 's/;/ /g'`
- ;;
- *)
- lt_search_path_spec=`$ECHO "$lt_search_path_spec" | $SED "s/$PATH_SEPARATOR/ /g"`
- ;;
- esac
- # Ok, now we have the path, separated by spaces, we can step through it
- # and add multilib dir if necessary.
- lt_tmp_lt_search_path_spec=
- lt_multi_os_dir=`$CC $CPPFLAGS $CFLAGS $LDFLAGS -print-multi-os-directory 2>/dev/null`
- for lt_sys_path in $lt_search_path_spec; do
- if test -d "$lt_sys_path/$lt_multi_os_dir"; then
- lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path/$lt_multi_os_dir"
- else
- test -d "$lt_sys_path" && \
- lt_tmp_lt_search_path_spec="$lt_tmp_lt_search_path_spec $lt_sys_path"
- fi
- done
- lt_search_path_spec=`$ECHO "$lt_tmp_lt_search_path_spec" | awk '
-BEGIN {RS=" "; FS="/|\n";} {
- lt_foo="";
- lt_count=0;
- for (lt_i = NF; lt_i > 0; lt_i--) {
- if ($lt_i != "" && $lt_i != ".") {
- if ($lt_i == "..") {
- lt_count++;
- } else {
- if (lt_count == 0) {
- lt_foo="/" $lt_i lt_foo;
- } else {
- lt_count--;
- }
- }
- }
- }
- if (lt_foo != "") { lt_freq[[lt_foo]]++; }
- if (lt_freq[[lt_foo]] == 1) { print lt_foo; }
-}'`
- # AWK program above erroneously prepends '/' to C:/dos/paths
- # for these hosts.
- case $host_os in
- mingw* | cegcc*) lt_search_path_spec=`$ECHO "$lt_search_path_spec" |\
- $SED 's,/\([[A-Za-z]]:\),\1,g'` ;;
- esac
- sys_lib_search_path_spec=`$ECHO "$lt_search_path_spec" | $lt_NL2SP`
-else
- sys_lib_search_path_spec="/lib /usr/lib /usr/local/lib"
-fi])
-library_names_spec=
-libname_spec='lib$name'
-soname_spec=
-shrext_cmds=".so"
-postinstall_cmds=
-postuninstall_cmds=
-finish_cmds=
-finish_eval=
-shlibpath_var=
-shlibpath_overrides_runpath=unknown
-version_type=none
-dynamic_linker="$host_os ld.so"
-sys_lib_dlsearch_path_spec="/lib /usr/lib"
-need_lib_prefix=unknown
-hardcode_into_libs=no
-
-# when you set need_version to no, make sure it does not cause -set_version
-# flags to be left without arguments
-need_version=unknown
-
-case $host_os in
-aix3*)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix $libname.a'
- shlibpath_var=LIBPATH
-
- # AIX 3 has no versioning support, so we append a major version to the name.
- soname_spec='${libname}${release}${shared_ext}$major'
- ;;
-
-aix[[4-9]]*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- hardcode_into_libs=yes
- if test "$host_cpu" = ia64; then
- # AIX 5 supports IA64
- library_names_spec='${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext}$versuffix $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- else
- # With GCC up to 2.95.x, collect2 would create an import file
- # for dependence libraries. The import file would start with
- # the line `#! .'. This would cause the generated library to
- # depend on `.', always an invalid library. This was fixed in
- # development snapshots of GCC prior to 3.0.
- case $host_os in
- aix4 | aix4.[[01]] | aix4.[[01]].*)
- if { echo '#if __GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 97)'
- echo ' yes '
- echo '#endif'; } | ${CC} -E - | $GREP yes > /dev/null; then
- :
- else
- can_build_shared=no
- fi
- ;;
- esac
- # AIX (on Power*) has no versioning support, so currently we can not hardcode correct
- # soname into executable. Probably we can add versioning support to
- # collect2, so additional links can be useful in future.
- if test "$aix_use_runtimelinking" = yes; then
- # If using run time linking (on AIX 4.2 or later) use lib<name>.so
- # instead of lib<name>.a to let people know that these are not
- # typical AIX shared libraries.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- else
- # We preserve .a as extension for shared libraries through AIX4.2
- # and later when we are not doing run time linking.
- library_names_spec='${libname}${release}.a $libname.a'
- soname_spec='${libname}${release}${shared_ext}$major'
- fi
- shlibpath_var=LIBPATH
- fi
- ;;
-
-amigaos*)
- case $host_cpu in
- powerpc)
- # Since July 2007 AmigaOS4 officially supports .so libraries.
- # When compiling the executable, add -use-dynld -Lsobjs: to the compileline.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- ;;
- m68k)
- library_names_spec='$libname.ixlibrary $libname.a'
- # Create ${libname}_ixlibrary.a entries in /sys/libs.
- finish_eval='for lib in `ls $libdir/*.ixlibrary 2>/dev/null`; do libname=`func_echo_all "$lib" | $SED '\''s%^.*/\([[^/]]*\)\.ixlibrary$%\1%'\''`; test $RM /sys/libs/${libname}_ixlibrary.a; $show "cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a"; cd /sys/libs && $LN_S $lib ${libname}_ixlibrary.a || exit 1; done'
- ;;
- esac
- ;;
-
-beos*)
- library_names_spec='${libname}${shared_ext}'
- dynamic_linker="$host_os ld.so"
- shlibpath_var=LIBRARY_PATH
- ;;
-
-bsdi[[45]]*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- sys_lib_search_path_spec="/shlib /usr/lib /usr/X11/lib /usr/contrib/lib /lib /usr/local/lib"
- sys_lib_dlsearch_path_spec="/shlib /usr/lib /usr/local/lib"
- # the default ld.so.conf also contains /usr/contrib/lib and
- # /usr/X11R6/lib (/usr/X11 is a link to /usr/X11R6), but let us allow
- # libtool to hard-code these into programs
- ;;
-
-cygwin* | mingw* | pw32* | cegcc*)
- version_type=windows
- shrext_cmds=".dll"
- need_version=no
- need_lib_prefix=no
-
- case $GCC,$cc_basename in
- yes,*)
- # gcc
- library_names_spec='$libname.dll.a'
- # DLL is installed to $(libdir)/../bin by postinstall_cmds
- postinstall_cmds='base_file=`basename \${file}`~
- dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
- dldir=$destdir/`dirname \$dlpath`~
- test -d \$dldir || mkdir -p \$dldir~
- $install_prog $dir/$dlname \$dldir/$dlname~
- chmod a+x \$dldir/$dlname~
- if test -n '\''$stripme'\'' && test -n '\''$striplib'\''; then
- eval '\''$striplib \$dldir/$dlname'\'' || exit \$?;
- fi'
- postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
- dlpath=$dir/\$dldll~
- $RM \$dlpath'
- shlibpath_overrides_runpath=yes
-
- case $host_os in
- cygwin*)
- # Cygwin DLLs use 'cyg' prefix rather than 'lib'
- soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
-m4_if([$1], [],[
- sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/lib/w32api"])
- ;;
- mingw* | cegcc*)
- # MinGW DLLs use traditional 'lib' prefix
- soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
- ;;
- pw32*)
- # pw32 DLLs use 'pw' prefix rather than 'lib'
- library_names_spec='`echo ${libname} | sed -e 's/^lib/pw/'``echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
- ;;
- esac
- dynamic_linker='Win32 ld.exe'
- ;;
-
- *,cl*)
- # Native MSVC
- libname_spec='$name'
- soname_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
- library_names_spec='${libname}.dll.lib'
-
- case $build_os in
- mingw*)
- sys_lib_search_path_spec=
- lt_save_ifs=$IFS
- IFS=';'
- for lt_path in $LIB
- do
- IFS=$lt_save_ifs
- # Let DOS variable expansion print the short 8.3 style file name.
- lt_path=`cd "$lt_path" 2>/dev/null && cmd //C "for %i in (".") do @echo %~si"`
- sys_lib_search_path_spec="$sys_lib_search_path_spec $lt_path"
- done
- IFS=$lt_save_ifs
- # Convert to MSYS style.
- sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | sed -e 's|\\\\|/|g' -e 's| \\([[a-zA-Z]]\\):| /\\1|g' -e 's|^ ||'`
- ;;
- cygwin*)
- # Convert to unix form, then to dos form, then back to unix form
- # but this time dos style (no spaces!) so that the unix form looks
- # like /cygdrive/c/PROGRA~1:/cygdr...
- sys_lib_search_path_spec=`cygpath --path --unix "$LIB"`
- sys_lib_search_path_spec=`cygpath --path --dos "$sys_lib_search_path_spec" 2>/dev/null`
- sys_lib_search_path_spec=`cygpath --path --unix "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
- ;;
- *)
- sys_lib_search_path_spec="$LIB"
- if $ECHO "$sys_lib_search_path_spec" | [$GREP ';[c-zC-Z]:/' >/dev/null]; then
- # It is most probably a Windows format PATH.
- sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e 's/;/ /g'`
- else
- sys_lib_search_path_spec=`$ECHO "$sys_lib_search_path_spec" | $SED -e "s/$PATH_SEPARATOR/ /g"`
- fi
- # FIXME: find the short name or the path components, as spaces are
- # common. (e.g. "Program Files" -> "PROGRA~1")
- ;;
- esac
-
- # DLL is installed to $(libdir)/../bin by postinstall_cmds
- postinstall_cmds='base_file=`basename \${file}`~
- dlpath=`$SHELL 2>&1 -c '\''. $dir/'\''\${base_file}'\''i; echo \$dlname'\''`~
- dldir=$destdir/`dirname \$dlpath`~
- test -d \$dldir || mkdir -p \$dldir~
- $install_prog $dir/$dlname \$dldir/$dlname'
- postuninstall_cmds='dldll=`$SHELL 2>&1 -c '\''. $file; echo \$dlname'\''`~
- dlpath=$dir/\$dldll~
- $RM \$dlpath'
- shlibpath_overrides_runpath=yes
- dynamic_linker='Win32 link.exe'
- ;;
-
- *)
- # Assume MSVC wrapper
- library_names_spec='${libname}`echo ${release} | $SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext} $libname.lib'
- dynamic_linker='Win32 ld.exe'
- ;;
- esac
- # FIXME: first we should search . and the directory the executable is in
- shlibpath_var=PATH
- ;;
-
-darwin* | rhapsody*)
- dynamic_linker="$host_os dyld"
- version_type=darwin
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${major}$shared_ext ${libname}$shared_ext'
- soname_spec='${libname}${release}${major}$shared_ext'
- shlibpath_overrides_runpath=yes
- shlibpath_var=DYLD_LIBRARY_PATH
- shrext_cmds='`test .$module = .yes && echo .so || echo .dylib`'
-m4_if([$1], [],[
- sys_lib_search_path_spec="$sys_lib_search_path_spec /usr/local/lib"])
- sys_lib_dlsearch_path_spec='/usr/local/lib /lib /usr/lib'
- ;;
-
-dgux*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname$shared_ext'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- ;;
-
-freebsd* | dragonfly*)
- # DragonFly does not have aout. When/if they implement a new
- # versioning mechanism, adjust this.
- if test -x /usr/bin/objformat; then
- objformat=`/usr/bin/objformat`
- else
- case $host_os in
- freebsd[[23]].*) objformat=aout ;;
- *) objformat=elf ;;
- esac
- fi
- version_type=freebsd-$objformat
- case $version_type in
- freebsd-elf*)
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
- need_version=no
- need_lib_prefix=no
- ;;
- freebsd-*)
- library_names_spec='${libname}${release}${shared_ext}$versuffix $libname${shared_ext}$versuffix'
- need_version=yes
- ;;
- esac
- shlibpath_var=LD_LIBRARY_PATH
- case $host_os in
- freebsd2.*)
- shlibpath_overrides_runpath=yes
- ;;
- freebsd3.[[01]]* | freebsdelf3.[[01]]*)
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- ;;
- freebsd3.[[2-9]]* | freebsdelf3.[[2-9]]* | \
- freebsd4.[[0-5]] | freebsdelf4.[[0-5]] | freebsd4.1.1 | freebsdelf4.1.1)
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
- *) # from 4.6 on, and DragonFly
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- ;;
- esac
- ;;
-
-gnu*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
-
-haiku*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- dynamic_linker="$host_os runtime_loader"
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}${major} ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- sys_lib_dlsearch_path_spec='/boot/home/config/lib /boot/common/lib /boot/system/lib'
- hardcode_into_libs=yes
- ;;
-
-hpux9* | hpux10* | hpux11*)
- # Give a soname corresponding to the major version so that dld.sl refuses to
- # link against other versions.
- version_type=sunos
- need_lib_prefix=no
- need_version=no
- case $host_cpu in
- ia64*)
- shrext_cmds='.so'
- hardcode_into_libs=yes
- dynamic_linker="$host_os dld.so"
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- if test "X$HPUX_IA64_MODE" = X32; then
- sys_lib_search_path_spec="/usr/lib/hpux32 /usr/local/lib/hpux32 /usr/local/lib"
- else
- sys_lib_search_path_spec="/usr/lib/hpux64 /usr/local/lib/hpux64"
- fi
- sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
- ;;
- hppa*64*)
- shrext_cmds='.sl'
- hardcode_into_libs=yes
- dynamic_linker="$host_os dld.sl"
- shlibpath_var=LD_LIBRARY_PATH # How should we handle SHLIB_PATH
- shlibpath_overrides_runpath=yes # Unless +noenvvar is specified.
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- sys_lib_search_path_spec="/usr/lib/pa20_64 /usr/ccs/lib/pa20_64"
- sys_lib_dlsearch_path_spec=$sys_lib_search_path_spec
- ;;
- *)
- shrext_cmds='.sl'
- dynamic_linker="$host_os dld.sl"
- shlibpath_var=SHLIB_PATH
- shlibpath_overrides_runpath=no # +s is required to enable SHLIB_PATH
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- ;;
- esac
- # HP-UX runs *really* slowly unless shared libraries are mode 555, ...
- postinstall_cmds='chmod 555 $lib'
- # or fails outright, so override atomically:
- install_override_mode=555
- ;;
-
-interix[[3-9]]*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- dynamic_linker='Interix 3.x ld.so.1 (PE, like ELF)'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
-
-irix5* | irix6* | nonstopux*)
- case $host_os in
- nonstopux*) version_type=nonstopux ;;
- *)
- if test "$lt_cv_prog_gnu_ld" = yes; then
- version_type=linux # correct to gnu/linux during the next big refactor
- else
- version_type=irix
- fi ;;
- esac
- need_lib_prefix=no
- need_version=no
- soname_spec='${libname}${release}${shared_ext}$major'
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${release}${shared_ext} $libname${shared_ext}'
- case $host_os in
- irix5* | nonstopux*)
- libsuff= shlibsuff=
- ;;
- *)
- case $LD in # libtool.m4 will add one of these switches to LD
- *-32|*"-32 "|*-melf32bsmip|*"-melf32bsmip ")
- libsuff= shlibsuff= libmagic=32-bit;;
- *-n32|*"-n32 "|*-melf32bmipn32|*"-melf32bmipn32 ")
- libsuff=32 shlibsuff=N32 libmagic=N32;;
- *-64|*"-64 "|*-melf64bmip|*"-melf64bmip ")
- libsuff=64 shlibsuff=64 libmagic=64-bit;;
- *) libsuff= shlibsuff= libmagic=never-match;;
- esac
- ;;
- esac
- shlibpath_var=LD_LIBRARY${shlibsuff}_PATH
- shlibpath_overrides_runpath=no
- sys_lib_search_path_spec="/usr/lib${libsuff} /lib${libsuff} /usr/local/lib${libsuff}"
- sys_lib_dlsearch_path_spec="/usr/lib${libsuff} /lib${libsuff}"
- hardcode_into_libs=yes
- ;;
-
-# No shared lib support for Linux oldld, aout, or coff.
-linux*oldld* | linux*aout* | linux*coff*)
- dynamic_linker=no
- ;;
-
-# This must be glibc/ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig -n $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
-
- # Some binutils ld are patched to set DT_RUNPATH
- AC_CACHE_VAL([lt_cv_shlibpath_overrides_runpath],
- [lt_cv_shlibpath_overrides_runpath=no
- save_LDFLAGS=$LDFLAGS
- save_libdir=$libdir
- eval "libdir=/foo; wl=\"$_LT_TAGVAR(lt_prog_compiler_wl, $1)\"; \
- LDFLAGS=\"\$LDFLAGS $_LT_TAGVAR(hardcode_libdir_flag_spec, $1)\""
- AC_LINK_IFELSE([AC_LANG_PROGRAM([],[])],
- [AS_IF([ ($OBJDUMP -p conftest$ac_exeext) 2>/dev/null | grep "RUNPATH.*$libdir" >/dev/null],
- [lt_cv_shlibpath_overrides_runpath=yes])])
- LDFLAGS=$save_LDFLAGS
- libdir=$save_libdir
- ])
- shlibpath_overrides_runpath=$lt_cv_shlibpath_overrides_runpath
-
- # This implies no fast_install, which is unacceptable.
- # Some rework will be needed to allow for fast_install
- # before this can be enabled.
- hardcode_into_libs=yes
-
- # Append ld.so.conf contents to the search path
- if test -f /etc/ld.so.conf; then
- lt_ld_extra=`awk '/^include / { system(sprintf("cd /etc; cat %s 2>/dev/null", \[$]2)); skip = 1; } { if (!skip) print \[$]0; skip = 0; }' < /etc/ld.so.conf | $SED -e 's/#.*//;/^[ ]*hwcap[ ]/d;s/[:, ]/ /g;s/=[^=]*$//;s/=[^= ]* / /g;s/"//g;/^$/d' | tr '\n' ' '`
- sys_lib_dlsearch_path_spec="/lib /usr/lib $lt_ld_extra"
- fi
-
- # We used to test for /lib/ld.so.1 and disable shared libraries on
- # powerpc, because MkLinux only supported shared libraries with the
- # GNU dynamic linker. Since this was broken with cross compilers,
- # most powerpc-linux boxes support dynamic linking these days and
- # people can always --disable-shared, the test was removed, and we
- # assume the GNU/Linux dynamic linker is in use.
- dynamic_linker='GNU/Linux ld.so'
- ;;
-
-netbsd*)
- version_type=sunos
- need_lib_prefix=no
- need_version=no
- if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
- dynamic_linker='NetBSD (a.out) ld.so'
- else
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major ${libname}${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- dynamic_linker='NetBSD ld.elf_so'
- fi
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- ;;
-
-newsos6)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- ;;
-
-*nto* | *qnx*)
- version_type=qnx
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- dynamic_linker='ldqnx.so'
- ;;
-
-openbsd*)
- version_type=sunos
- sys_lib_dlsearch_path_spec="/usr/lib"
- need_lib_prefix=no
- # Some older versions of OpenBSD (3.3 at least) *do* need versioned libs.
- case $host_os in
- openbsd3.3 | openbsd3.3.*) need_version=yes ;;
- *) need_version=no ;;
- esac
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
- finish_cmds='PATH="\$PATH:/sbin" ldconfig -m $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- case $host_os in
- openbsd2.[[89]] | openbsd2.[[89]].*)
- shlibpath_overrides_runpath=no
- ;;
- *)
- shlibpath_overrides_runpath=yes
- ;;
- esac
- else
- shlibpath_overrides_runpath=yes
- fi
- ;;
-
-os2*)
- libname_spec='$name'
- shrext_cmds=".dll"
- need_lib_prefix=no
- library_names_spec='$libname${shared_ext} $libname.a'
- dynamic_linker='OS/2 ld.exe'
- shlibpath_var=LIBPATH
- ;;
-
-osf3* | osf4* | osf5*)
- version_type=osf
- need_lib_prefix=no
- need_version=no
- soname_spec='${libname}${release}${shared_ext}$major'
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- sys_lib_search_path_spec="/usr/shlib /usr/ccs/lib /usr/lib/cmplrs/cc /usr/lib /usr/local/lib /var/shlib"
- sys_lib_dlsearch_path_spec="$sys_lib_search_path_spec"
- ;;
-
-rdos*)
- dynamic_linker=no
- ;;
-
-solaris*)
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- # ldd complains unless libraries are executable
- postinstall_cmds='chmod +x $lib'
- ;;
-
-sunos4*)
- version_type=sunos
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${shared_ext}$versuffix'
- finish_cmds='PATH="\$PATH:/usr/etc" ldconfig $libdir'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- if test "$with_gnu_ld" = yes; then
- need_lib_prefix=no
- fi
- need_version=yes
- ;;
-
-sysv4 | sysv4.3*)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- case $host_vendor in
- sni)
- shlibpath_overrides_runpath=no
- need_lib_prefix=no
- runpath_var=LD_RUN_PATH
- ;;
- siemens)
- need_lib_prefix=no
- ;;
- motorola)
- need_lib_prefix=no
- need_version=no
- shlibpath_overrides_runpath=no
- sys_lib_search_path_spec='/lib /usr/lib /usr/ccs/lib'
- ;;
- esac
- ;;
-
-sysv4*MP*)
- if test -d /usr/nec ;then
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='$libname${shared_ext}.$versuffix $libname${shared_ext}.$major $libname${shared_ext}'
- soname_spec='$libname${shared_ext}.$major'
- shlibpath_var=LD_LIBRARY_PATH
- fi
- ;;
-
-sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
- version_type=freebsd-elf
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext} $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=yes
- hardcode_into_libs=yes
- if test "$with_gnu_ld" = yes; then
- sys_lib_search_path_spec='/usr/local/lib /usr/gnu/lib /usr/ccs/lib /usr/lib /lib'
- else
- sys_lib_search_path_spec='/usr/ccs/lib /usr/lib'
- case $host_os in
- sco3.2v5*)
- sys_lib_search_path_spec="$sys_lib_search_path_spec /lib"
- ;;
- esac
- fi
- sys_lib_dlsearch_path_spec='/usr/lib'
- ;;
-
-tpf*)
- # TPF is a cross-target only. Preferred cross-host = GNU/Linux.
- version_type=linux # correct to gnu/linux during the next big refactor
- need_lib_prefix=no
- need_version=no
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- shlibpath_var=LD_LIBRARY_PATH
- shlibpath_overrides_runpath=no
- hardcode_into_libs=yes
- ;;
-
-uts4*)
- version_type=linux # correct to gnu/linux during the next big refactor
- library_names_spec='${libname}${release}${shared_ext}$versuffix ${libname}${release}${shared_ext}$major $libname${shared_ext}'
- soname_spec='${libname}${release}${shared_ext}$major'
- shlibpath_var=LD_LIBRARY_PATH
- ;;
-
-*)
- dynamic_linker=no
- ;;
-esac
-AC_MSG_RESULT([$dynamic_linker])
-test "$dynamic_linker" = no && can_build_shared=no
-
-variables_saved_for_relink="PATH $shlibpath_var $runpath_var"
-if test "$GCC" = yes; then
- variables_saved_for_relink="$variables_saved_for_relink GCC_EXEC_PREFIX COMPILER_PATH LIBRARY_PATH"
-fi
-
-if test "${lt_cv_sys_lib_search_path_spec+set}" = set; then
- sys_lib_search_path_spec="$lt_cv_sys_lib_search_path_spec"
-fi
-if test "${lt_cv_sys_lib_dlsearch_path_spec+set}" = set; then
- sys_lib_dlsearch_path_spec="$lt_cv_sys_lib_dlsearch_path_spec"
-fi
-
-_LT_DECL([], [variables_saved_for_relink], [1],
- [Variables whose values should be saved in libtool wrapper scripts and
- restored at link time])
-_LT_DECL([], [need_lib_prefix], [0],
- [Do we need the "lib" prefix for modules?])
-_LT_DECL([], [need_version], [0], [Do we need a version for libraries?])
-_LT_DECL([], [version_type], [0], [Library versioning type])
-_LT_DECL([], [runpath_var], [0], [Shared library runtime path variable])
-_LT_DECL([], [shlibpath_var], [0],[Shared library path variable])
-_LT_DECL([], [shlibpath_overrides_runpath], [0],
- [Is shlibpath searched before the hard-coded library search path?])
-_LT_DECL([], [libname_spec], [1], [Format of library name prefix])
-_LT_DECL([], [library_names_spec], [1],
- [[List of archive names. First name is the real one, the rest are links.
- The last name is the one that the linker finds with -lNAME]])
-_LT_DECL([], [soname_spec], [1],
- [[The coded name of the library, if different from the real name]])
-_LT_DECL([], [install_override_mode], [1],
- [Permission mode override for installation of shared libraries])
-_LT_DECL([], [postinstall_cmds], [2],
- [Command to use after installation of a shared archive])
-_LT_DECL([], [postuninstall_cmds], [2],
- [Command to use after uninstallation of a shared archive])
-_LT_DECL([], [finish_cmds], [2],
- [Commands used to finish a libtool library installation in a directory])
-_LT_DECL([], [finish_eval], [1],
- [[As "finish_cmds", except a single script fragment to be evaled but
- not shown]])
-_LT_DECL([], [hardcode_into_libs], [0],
- [Whether we should hardcode library paths into libraries])
-_LT_DECL([], [sys_lib_search_path_spec], [2],
- [Compile-time system search path for libraries])
-_LT_DECL([], [sys_lib_dlsearch_path_spec], [2],
- [Run-time system search path for libraries])
-])# _LT_SYS_DYNAMIC_LINKER
-
-
-# _LT_PATH_TOOL_PREFIX(TOOL)
-# --------------------------
-# find a file program which can recognize shared library
-AC_DEFUN([_LT_PATH_TOOL_PREFIX],
-[m4_require([_LT_DECL_EGREP])dnl
-AC_MSG_CHECKING([for $1])
-AC_CACHE_VAL(lt_cv_path_MAGIC_CMD,
-[case $MAGIC_CMD in
-[[\\/*] | ?:[\\/]*])
- lt_cv_path_MAGIC_CMD="$MAGIC_CMD" # Let the user override the test with a path.
- ;;
-*)
- lt_save_MAGIC_CMD="$MAGIC_CMD"
- lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
-dnl $ac_dummy forces splitting on constant user-supplied paths.
-dnl POSIX.2 word splitting is done only on the output of word expansions,
-dnl not every word. This closes a longstanding sh security hole.
- ac_dummy="m4_if([$2], , $PATH, [$2])"
- for ac_dir in $ac_dummy; do
- IFS="$lt_save_ifs"
- test -z "$ac_dir" && ac_dir=.
- if test -f $ac_dir/$1; then
- lt_cv_path_MAGIC_CMD="$ac_dir/$1"
- if test -n "$file_magic_test_file"; then
- case $deplibs_check_method in
- "file_magic "*)
- file_magic_regex=`expr "$deplibs_check_method" : "file_magic \(.*\)"`
- MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
- if eval $file_magic_cmd \$file_magic_test_file 2> /dev/null |
- $EGREP "$file_magic_regex" > /dev/null; then
- :
- else
- cat <<_LT_EOF 1>&2
-
-*** Warning: the command libtool uses to detect shared libraries,
-*** $file_magic_cmd, produces output that libtool cannot recognize.
-*** The result is that libtool may fail to recognize shared libraries
-*** as such. This will affect the creation of libtool libraries that
-*** depend on shared libraries, but programs linked with such libtool
-*** libraries will work regardless of this problem. Nevertheless, you
-*** may want to report the problem to your system manager and/or to
-*** bug-libtool@gnu.org
-
-_LT_EOF
- fi ;;
- esac
- fi
- break
- fi
- done
- IFS="$lt_save_ifs"
- MAGIC_CMD="$lt_save_MAGIC_CMD"
- ;;
-esac])
-MAGIC_CMD="$lt_cv_path_MAGIC_CMD"
-if test -n "$MAGIC_CMD"; then
- AC_MSG_RESULT($MAGIC_CMD)
-else
- AC_MSG_RESULT(no)
-fi
-_LT_DECL([], [MAGIC_CMD], [0],
- [Used to examine libraries when file_magic_cmd begins with "file"])dnl
-])# _LT_PATH_TOOL_PREFIX
-
-# Old name:
-AU_ALIAS([AC_PATH_TOOL_PREFIX], [_LT_PATH_TOOL_PREFIX])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_PATH_TOOL_PREFIX], [])
-
-
-# _LT_PATH_MAGIC
-# --------------
-# find a file program which can recognize a shared library
-m4_defun([_LT_PATH_MAGIC],
-[_LT_PATH_TOOL_PREFIX(${ac_tool_prefix}file, /usr/bin$PATH_SEPARATOR$PATH)
-if test -z "$lt_cv_path_MAGIC_CMD"; then
- if test -n "$ac_tool_prefix"; then
- _LT_PATH_TOOL_PREFIX(file, /usr/bin$PATH_SEPARATOR$PATH)
- else
- MAGIC_CMD=:
- fi
-fi
-])# _LT_PATH_MAGIC
-
-
-# LT_PATH_LD
-# ----------
-# find the pathname to the GNU or non-GNU linker
-AC_DEFUN([LT_PATH_LD],
-[AC_REQUIRE([AC_PROG_CC])dnl
-AC_REQUIRE([AC_CANONICAL_HOST])dnl
-AC_REQUIRE([AC_CANONICAL_BUILD])dnl
-m4_require([_LT_DECL_SED])dnl
-m4_require([_LT_DECL_EGREP])dnl
-m4_require([_LT_PROG_ECHO_BACKSLASH])dnl
-
-AC_ARG_WITH([gnu-ld],
- [AS_HELP_STRING([--with-gnu-ld],
- [assume the C compiler uses GNU ld @<:@default=no@:>@])],
- [test "$withval" = no || with_gnu_ld=yes],
- [with_gnu_ld=no])dnl
-
-ac_prog=ld
-if test "$GCC" = yes; then
- # Check if gcc -print-prog-name=ld gives a path.
- AC_MSG_CHECKING([for ld used by $CC])
- case $host in
- *-*-mingw*)
- # gcc leaves a trailing carriage return which upsets mingw
- ac_prog=`($CC -print-prog-name=ld) 2>&5 | tr -d '\015'` ;;
- *)
- ac_prog=`($CC -print-prog-name=ld) 2>&5` ;;
- esac
- case $ac_prog in
- # Accept absolute paths.
- [[\\/]]* | ?:[[\\/]]*)
- re_direlt='/[[^/]][[^/]]*/\.\./'
- # Canonicalize the pathname of ld
- ac_prog=`$ECHO "$ac_prog"| $SED 's%\\\\%/%g'`
- while $ECHO "$ac_prog" | $GREP "$re_direlt" > /dev/null 2>&1; do
- ac_prog=`$ECHO $ac_prog| $SED "s%$re_direlt%/%"`
- done
- test -z "$LD" && LD="$ac_prog"
- ;;
- "")
- # If it fails, then pretend we aren't using GCC.
- ac_prog=ld
- ;;
- *)
- # If it is relative, then search for the first ld in PATH.
- with_gnu_ld=unknown
- ;;
- esac
-elif test "$with_gnu_ld" = yes; then
- AC_MSG_CHECKING([for GNU ld])
-else
- AC_MSG_CHECKING([for non-GNU ld])
-fi
-AC_CACHE_VAL(lt_cv_path_LD,
-[if test -z "$LD"; then
- lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
- for ac_dir in $PATH; do
- IFS="$lt_save_ifs"
- test -z "$ac_dir" && ac_dir=.
- if test -f "$ac_dir/$ac_prog" || test -f "$ac_dir/$ac_prog$ac_exeext"; then
- lt_cv_path_LD="$ac_dir/$ac_prog"
- # Check to see if the program is GNU ld. I'd rather use --version,
- # but apparently some variants of GNU ld only accept -v.
- # Break only if it was the GNU/non-GNU ld that we prefer.
- case `"$lt_cv_path_LD" -v 2>&1 </dev/null` in
- *GNU* | *'with BFD'*)
- test "$with_gnu_ld" != no && break
- ;;
- *)
- test "$with_gnu_ld" != yes && break
- ;;
- esac
- fi
- done
- IFS="$lt_save_ifs"
-else
- lt_cv_path_LD="$LD" # Let the user override the test with a path.
-fi])
-LD="$lt_cv_path_LD"
-if test -n "$LD"; then
- AC_MSG_RESULT($LD)
-else
- AC_MSG_RESULT(no)
-fi
-test -z "$LD" && AC_MSG_ERROR([no acceptable ld found in \$PATH])
-_LT_PATH_LD_GNU
-AC_SUBST([LD])
-
-_LT_TAGDECL([], [LD], [1], [The linker used to build libraries])
-])# LT_PATH_LD
-
-# Old names:
-AU_ALIAS([AM_PROG_LD], [LT_PATH_LD])
-AU_ALIAS([AC_PROG_LD], [LT_PATH_LD])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AM_PROG_LD], [])
-dnl AC_DEFUN([AC_PROG_LD], [])
-
-
-# _LT_PATH_LD_GNU
-#- --------------
-m4_defun([_LT_PATH_LD_GNU],
-[AC_CACHE_CHECK([if the linker ($LD) is GNU ld], lt_cv_prog_gnu_ld,
-[# I'd rather use --version here, but apparently some GNU lds only accept -v.
-case `$LD -v 2>&1 </dev/null` in
-*GNU* | *'with BFD'*)
- lt_cv_prog_gnu_ld=yes
- ;;
-*)
- lt_cv_prog_gnu_ld=no
- ;;
-esac])
-with_gnu_ld=$lt_cv_prog_gnu_ld
-])# _LT_PATH_LD_GNU
-
-
-# _LT_CMD_RELOAD
-# --------------
-# find reload flag for linker
-# -- PORTME Some linkers may need a different reload flag.
-m4_defun([_LT_CMD_RELOAD],
-[AC_CACHE_CHECK([for $LD option to reload object files],
- lt_cv_ld_reload_flag,
- [lt_cv_ld_reload_flag='-r'])
-reload_flag=$lt_cv_ld_reload_flag
-case $reload_flag in
-"" | " "*) ;;
-*) reload_flag=" $reload_flag" ;;
-esac
-reload_cmds='$LD$reload_flag -o $output$reload_objs'
-case $host_os in
- cygwin* | mingw* | pw32* | cegcc*)
- if test "$GCC" != yes; then
- reload_cmds=false
- fi
- ;;
- darwin*)
- if test "$GCC" = yes; then
- reload_cmds='$LTCC $LTCFLAGS -nostdlib ${wl}-r -o $output$reload_objs'
- else
- reload_cmds='$LD$reload_flag -o $output$reload_objs'
- fi
- ;;
-esac
-_LT_TAGDECL([], [reload_flag], [1], [How to create reloadable object files])dnl
-_LT_TAGDECL([], [reload_cmds], [2])dnl
-])# _LT_CMD_RELOAD
-
-
-# _LT_CHECK_MAGIC_METHOD
-# ----------------------
-# how to check for library dependencies
-# -- PORTME fill in with the dynamic library characteristics
-m4_defun([_LT_CHECK_MAGIC_METHOD],
-[m4_require([_LT_DECL_EGREP])
-m4_require([_LT_DECL_OBJDUMP])
-AC_CACHE_CHECK([how to recognize dependent libraries],
-lt_cv_deplibs_check_method,
-[lt_cv_file_magic_cmd='$MAGIC_CMD'
-lt_cv_file_magic_test_file=
-lt_cv_deplibs_check_method='unknown'
-# Need to set the preceding variable on all platforms that support
-# interlibrary dependencies.
-# 'none' -- dependencies not supported.
-# `unknown' -- same as none, but documents that we really don't know.
-# 'pass_all' -- all dependencies passed with no checks.
-# 'test_compile' -- check by making test program.
-# 'file_magic [[regex]]' -- check by looking for files in library path
-# which responds to the $file_magic_cmd with a given extended regex.
-# If you have `file' or equivalent on your system and you're not sure
-# whether `pass_all' will *always* work, you probably want this one.
-
-case $host_os in
-aix[[4-9]]*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-beos*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-bsdi[[45]]*)
- lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib)'
- lt_cv_file_magic_cmd='/usr/bin/file -L'
- lt_cv_file_magic_test_file=/shlib/libc.so
- ;;
-
-cygwin*)
- # func_win32_libid is a shell function defined in ltmain.sh
- lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
- lt_cv_file_magic_cmd='func_win32_libid'
- ;;
-
-mingw* | pw32*)
- # Base MSYS/MinGW do not provide the 'file' command needed by
- # func_win32_libid shell function, so use a weaker test based on 'objdump',
- # unless we find 'file', for example because we are cross-compiling.
- # func_win32_libid assumes BSD nm, so disallow it if using MS dumpbin.
- if ( test "$lt_cv_nm_interface" = "BSD nm" && file / ) >/dev/null 2>&1; then
- lt_cv_deplibs_check_method='file_magic ^x86 archive import|^x86 DLL'
- lt_cv_file_magic_cmd='func_win32_libid'
- else
- # Keep this pattern in sync with the one in func_win32_libid.
- lt_cv_deplibs_check_method='file_magic file format (pei*-i386(.*architecture: i386)?|pe-arm-wince|pe-x86-64)'
- lt_cv_file_magic_cmd='$OBJDUMP -f'
- fi
- ;;
-
-cegcc*)
- # use the weaker test based on 'objdump'. See mingw*.
- lt_cv_deplibs_check_method='file_magic file format pe-arm-.*little(.*architecture: arm)?'
- lt_cv_file_magic_cmd='$OBJDUMP -f'
- ;;
-
-darwin* | rhapsody*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-freebsd* | dragonfly*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
- case $host_cpu in
- i*86 )
- # Not sure whether the presence of OpenBSD here was a mistake.
- # Let's accept both of them until this is cleared up.
- lt_cv_deplibs_check_method='file_magic (FreeBSD|OpenBSD|DragonFly)/i[[3-9]]86 (compact )?demand paged shared library'
- lt_cv_file_magic_cmd=/usr/bin/file
- lt_cv_file_magic_test_file=`echo /usr/lib/libc.so.*`
- ;;
- esac
- else
- lt_cv_deplibs_check_method=pass_all
- fi
- ;;
-
-gnu*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-haiku*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-hpux10.20* | hpux11*)
- lt_cv_file_magic_cmd=/usr/bin/file
- case $host_cpu in
- ia64*)
- lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|ELF-[[0-9]][[0-9]]) shared object file - IA64'
- lt_cv_file_magic_test_file=/usr/lib/hpux32/libc.so
- ;;
- hppa*64*)
- [lt_cv_deplibs_check_method='file_magic (s[0-9][0-9][0-9]|ELF[ -][0-9][0-9])(-bit)?( [LM]SB)? shared object( file)?[, -]* PA-RISC [0-9]\.[0-9]']
- lt_cv_file_magic_test_file=/usr/lib/pa20_64/libc.sl
- ;;
- *)
- lt_cv_deplibs_check_method='file_magic (s[[0-9]][[0-9]][[0-9]]|PA-RISC[[0-9]]\.[[0-9]]) shared library'
- lt_cv_file_magic_test_file=/usr/lib/libc.sl
- ;;
- esac
- ;;
-
-interix[[3-9]]*)
- # PIC code is broken on Interix 3.x, that's why |\.a not |_pic\.a here
- lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|\.a)$'
- ;;
-
-irix5* | irix6* | nonstopux*)
- case $LD in
- *-32|*"-32 ") libmagic=32-bit;;
- *-n32|*"-n32 ") libmagic=N32;;
- *-64|*"-64 ") libmagic=64-bit;;
- *) libmagic=never-match;;
- esac
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-# This must be glibc/ELF.
-linux* | k*bsd*-gnu | kopensolaris*-gnu)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-netbsd*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ > /dev/null; then
- lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
- else
- lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so|_pic\.a)$'
- fi
- ;;
-
-newos6*)
- lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (executable|dynamic lib)'
- lt_cv_file_magic_cmd=/usr/bin/file
- lt_cv_file_magic_test_file=/usr/lib/libnls.so
- ;;
-
-*nto* | *qnx*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-openbsd*)
- if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|\.so|_pic\.a)$'
- else
- lt_cv_deplibs_check_method='match_pattern /lib[[^/]]+(\.so\.[[0-9]]+\.[[0-9]]+|_pic\.a)$'
- fi
- ;;
-
-osf3* | osf4* | osf5*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-rdos*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-solaris*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX* | sysv4*uw2*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-
-sysv4 | sysv4.3*)
- case $host_vendor in
- motorola)
- lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[ML]]SB (shared object|dynamic lib) M[[0-9]][[0-9]]* Version [[0-9]]'
- lt_cv_file_magic_test_file=`echo /usr/lib/libc.so*`
- ;;
- ncr)
- lt_cv_deplibs_check_method=pass_all
- ;;
- sequent)
- lt_cv_file_magic_cmd='/bin/file'
- lt_cv_deplibs_check_method='file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB (shared object|dynamic lib )'
- ;;
- sni)
- lt_cv_file_magic_cmd='/bin/file'
- lt_cv_deplibs_check_method="file_magic ELF [[0-9]][[0-9]]*-bit [[LM]]SB dynamic lib"
- lt_cv_file_magic_test_file=/lib/libc.so
- ;;
- siemens)
- lt_cv_deplibs_check_method=pass_all
- ;;
- pc)
- lt_cv_deplibs_check_method=pass_all
- ;;
- esac
- ;;
-
-tpf*)
- lt_cv_deplibs_check_method=pass_all
- ;;
-esac
-])
-
-file_magic_glob=
-want_nocaseglob=no
-if test "$build" = "$host"; then
- case $host_os in
- mingw* | pw32*)
- if ( shopt | grep nocaseglob ) >/dev/null 2>&1; then
- want_nocaseglob=yes
- else
- file_magic_glob=`echo aAbBcCdDeEfFgGhHiIjJkKlLmMnNoOpPqQrRsStTuUvVwWxXyYzZ | $SED -e "s/\(..\)/s\/[[\1]]\/[[\1]]\/g;/g"`
- fi
- ;;
- esac
-fi
-
-file_magic_cmd=$lt_cv_file_magic_cmd
-deplibs_check_method=$lt_cv_deplibs_check_method
-test -z "$deplibs_check_method" && deplibs_check_method=unknown
-
-_LT_DECL([], [deplibs_check_method], [1],
- [Method to check whether dependent libraries are shared objects])
-_LT_DECL([], [file_magic_cmd], [1],
- [Command to use when deplibs_check_method = "file_magic"])
-_LT_DECL([], [file_magic_glob], [1],
- [How to find potential files when deplibs_check_method = "file_magic"])
-_LT_DECL([], [want_nocaseglob], [1],
- [Find potential files using nocaseglob when deplibs_check_method = "file_magic"])
-])# _LT_CHECK_MAGIC_METHOD
-
-
-# LT_PATH_NM
-# ----------
-# find the pathname to a BSD- or MS-compatible name lister
-AC_DEFUN([LT_PATH_NM],
-[AC_REQUIRE([AC_PROG_CC])dnl
-AC_CACHE_CHECK([for BSD- or MS-compatible name lister (nm)], lt_cv_path_NM,
-[if test -n "$NM"; then
- # Let the user override the test.
- lt_cv_path_NM="$NM"
-else
- lt_nm_to_check="${ac_tool_prefix}nm"
- if test -n "$ac_tool_prefix" && test "$build" = "$host"; then
- lt_nm_to_check="$lt_nm_to_check nm"
- fi
- for lt_tmp_nm in $lt_nm_to_check; do
- lt_save_ifs="$IFS"; IFS=$PATH_SEPARATOR
- for ac_dir in $PATH /usr/ccs/bin/elf /usr/ccs/bin /usr/ucb /bin; do
- IFS="$lt_save_ifs"
- test -z "$ac_dir" && ac_dir=.
- tmp_nm="$ac_dir/$lt_tmp_nm"
- if test -f "$tmp_nm" || test -f "$tmp_nm$ac_exeext" ; then
- # Check to see if the nm accepts a BSD-compat flag.
- # Adding the `sed 1q' prevents false positives on HP-UX, which says:
- # nm: unknown option "B" ignored
- # Tru64's nm complains that /dev/null is an invalid object file
- case `"$tmp_nm" -B /dev/null 2>&1 | sed '1q'` in
- */dev/null* | *'Invalid file or object type'*)
- lt_cv_path_NM="$tmp_nm -B"
- break
- ;;
- *)
- case `"$tmp_nm" -p /dev/null 2>&1 | sed '1q'` in
- */dev/null*)
- lt_cv_path_NM="$tmp_nm -p"
- break
- ;;
- *)
- lt_cv_path_NM=${lt_cv_path_NM="$tmp_nm"} # keep the first match, but
- continue # so that we can try to find one that supports BSD flags
- ;;
- esac
- ;;
- esac
- fi
- done
- IFS="$lt_save_ifs"
- done
- : ${lt_cv_path_NM=no}
-fi])
-if test "$lt_cv_path_NM" != "no"; then
- NM="$lt_cv_path_NM"
-else
- # Didn't find any BSD compatible name lister, look for dumpbin.
- if test -n "$DUMPBIN"; then :
- # Let the user override the test.
- else
- AC_CHECK_TOOLS(DUMPBIN, [dumpbin "link -dump"], :)
- case `$DUMPBIN -symbols /dev/null 2>&1 | sed '1q'` in
- *COFF*)
- DUMPBIN="$DUMPBIN -symbols"
- ;;
- *)
- DUMPBIN=:
- ;;
- esac
- fi
- AC_SUBST([DUMPBIN])
- if test "$DUMPBIN" != ":"; then
- NM="$DUMPBIN"
- fi
-fi
-test -z "$NM" && NM=nm
-AC_SUBST([NM])
-_LT_DECL([], [NM], [1], [A BSD- or MS-compatible name lister])dnl
-
-AC_CACHE_CHECK([the name lister ($NM) interface], [lt_cv_nm_interface],
- [lt_cv_nm_interface="BSD nm"
- echo "int some_variable = 0;" > conftest.$ac_ext
- (eval echo "\"\$as_me:$LINENO: $ac_compile\"" >&AS_MESSAGE_LOG_FD)
- (eval "$ac_compile" 2>conftest.err)
- cat conftest.err >&AS_MESSAGE_LOG_FD
- (eval echo "\"\$as_me:$LINENO: $NM \\\"conftest.$ac_objext\\\"\"" >&AS_MESSAGE_LOG_FD)
- (eval "$NM \"conftest.$ac_objext\"" 2>conftest.err > conftest.out)
- cat conftest.err >&AS_MESSAGE_LOG_FD
- (eval echo "\"\$as_me:$LINENO: output\"" >&AS_MESSAGE_LOG_FD)
- cat conftest.out >&AS_MESSAGE_LOG_FD
- if $GREP 'External.*some_variable' conftest.out > /dev/null; then
- lt_cv_nm_interface="MS dumpbin"
- fi
- rm -f conftest*])
-])# LT_PATH_NM
-
-# Old names:
-AU_ALIAS([AM_PROG_NM], [LT_PATH_NM])
-AU_ALIAS([AC_PROG_NM], [LT_PATH_NM])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AM_PROG_NM], [])
-dnl AC_DEFUN([AC_PROG_NM], [])
-
-# _LT_CHECK_SHAREDLIB_FROM_LINKLIB
-# --------------------------------
-# how to determine the name of the shared library
-# associated with a specific link library.
-# -- PORTME fill in with the dynamic library characteristics
-m4_defun([_LT_CHECK_SHAREDLIB_FROM_LINKLIB],
-[m4_require([_LT_DECL_EGREP])
-m4_require([_LT_DECL_OBJDUMP])
-m4_require([_LT_DECL_DLLTOOL])
-AC_CACHE_CHECK([how to associate runtime and link libraries],
-lt_cv_sharedlib_from_linklib_cmd,
-[lt_cv_sharedlib_from_linklib_cmd='unknown'
-
-case $host_os in
-cygwin* | mingw* | pw32* | cegcc*)
- # two different shell functions defined in ltmain.sh
- # decide which to use based on capabilities of $DLLTOOL
- case `$DLLTOOL --help 2>&1` in
- *--identify-strict*)
- lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib
- ;;
- *)
- lt_cv_sharedlib_from_linklib_cmd=func_cygming_dll_for_implib_fallback
- ;;
- esac
- ;;
-*)
- # fallback: assume linklib IS sharedlib
- lt_cv_sharedlib_from_linklib_cmd="$ECHO"
- ;;
-esac
-])
-sharedlib_from_linklib_cmd=$lt_cv_sharedlib_from_linklib_cmd
-test -z "$sharedlib_from_linklib_cmd" && sharedlib_from_linklib_cmd=$ECHO
-
-_LT_DECL([], [sharedlib_from_linklib_cmd], [1],
- [Command to associate shared and link libraries])
-])# _LT_CHECK_SHAREDLIB_FROM_LINKLIB
-
-
-# _LT_PATH_MANIFEST_TOOL
-# ----------------------
-# locate the manifest tool
-m4_defun([_LT_PATH_MANIFEST_TOOL],
-[AC_CHECK_TOOL(MANIFEST_TOOL, mt, :)
-test -z "$MANIFEST_TOOL" && MANIFEST_TOOL=mt
-AC_CACHE_CHECK([if $MANIFEST_TOOL is a manifest tool], [lt_cv_path_mainfest_tool],
- [lt_cv_path_mainfest_tool=no
- echo "$as_me:$LINENO: $MANIFEST_TOOL '-?'" >&AS_MESSAGE_LOG_FD
- $MANIFEST_TOOL '-?' 2>conftest.err > conftest.out
- cat conftest.err >&AS_MESSAGE_LOG_FD
- if $GREP 'Manifest Tool' conftest.out > /dev/null; then
- lt_cv_path_mainfest_tool=yes
- fi
- rm -f conftest*])
-if test "x$lt_cv_path_mainfest_tool" != xyes; then
- MANIFEST_TOOL=:
-fi
-_LT_DECL([], [MANIFEST_TOOL], [1], [Manifest tool])dnl
-])# _LT_PATH_MANIFEST_TOOL
-
-
-# LT_LIB_M
-# --------
-# check for math library
-AC_DEFUN([LT_LIB_M],
-[AC_REQUIRE([AC_CANONICAL_HOST])dnl
-LIBM=
-case $host in
-*-*-beos* | *-*-cegcc* | *-*-cygwin* | *-*-haiku* | *-*-pw32* | *-*-darwin*)
- # These system don't have libm, or don't need it
- ;;
-*-ncr-sysv4.3*)
- AC_CHECK_LIB(mw, _mwvalidcheckl, LIBM="-lmw")
- AC_CHECK_LIB(m, cos, LIBM="$LIBM -lm")
- ;;
-*)
- AC_CHECK_LIB(m, cos, LIBM="-lm")
- ;;
-esac
-AC_SUBST([LIBM])
-])# LT_LIB_M
-
-# Old name:
-AU_ALIAS([AC_CHECK_LIBM], [LT_LIB_M])
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_CHECK_LIBM], [])
-
-
-# _LT_COMPILER_NO_RTTI([TAGNAME])
-# -------------------------------
-m4_defun([_LT_COMPILER_NO_RTTI],
-[m4_require([_LT_TAG_COMPILER])dnl
-
-_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
-
-if test "$GCC" = yes; then
- case $cc_basename in
- nvcc*)
- _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -Xcompiler -fno-builtin' ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin' ;;
- esac
-
- _LT_COMPILER_OPTION([if $compiler supports -fno-rtti -fno-exceptions],
- lt_cv_prog_compiler_rtti_exceptions,
- [-fno-rtti -fno-exceptions], [],
- [_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)="$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1) -fno-rtti -fno-exceptions"])
-fi
-_LT_TAGDECL([no_builtin_flag], [lt_prog_compiler_no_builtin_flag], [1],
- [Compiler flag to turn off builtin functions])
-])# _LT_COMPILER_NO_RTTI
-
-
-# _LT_CMD_GLOBAL_SYMBOLS
-# ----------------------
-m4_defun([_LT_CMD_GLOBAL_SYMBOLS],
-[AC_REQUIRE([AC_CANONICAL_HOST])dnl
-AC_REQUIRE([AC_PROG_CC])dnl
-AC_REQUIRE([AC_PROG_AWK])dnl
-AC_REQUIRE([LT_PATH_NM])dnl
-AC_REQUIRE([LT_PATH_LD])dnl
-m4_require([_LT_DECL_SED])dnl
-m4_require([_LT_DECL_EGREP])dnl
-m4_require([_LT_TAG_COMPILER])dnl
-
-# Check for command to grab the raw symbol name followed by C symbol from nm.
-AC_MSG_CHECKING([command to parse $NM output from $compiler object])
-AC_CACHE_VAL([lt_cv_sys_global_symbol_pipe],
-[
-# These are sane defaults that work on at least a few old systems.
-# [They come from Ultrix. What could be older than Ultrix?!! ;)]
-
-# Character class describing NM global symbol codes.
-symcode='[[BCDEGRST]]'
-
-# Regexp to match symbols that can be accessed directly from C.
-sympat='\([[_A-Za-z]][[_A-Za-z0-9]]*\)'
-
-# Define system-specific variables.
-case $host_os in
-aix*)
- symcode='[[BCDT]]'
- ;;
-cygwin* | mingw* | pw32* | cegcc*)
- symcode='[[ABCDGISTW]]'
- ;;
-hpux*)
- if test "$host_cpu" = ia64; then
- symcode='[[ABCDEGRST]]'
- fi
- ;;
-irix* | nonstopux*)
- symcode='[[BCDEGRST]]'
- ;;
-osf*)
- symcode='[[BCDEGQRST]]'
- ;;
-solaris*)
- symcode='[[BDRT]]'
- ;;
-sco3.2v5*)
- symcode='[[DT]]'
- ;;
-sysv4.2uw2*)
- symcode='[[DT]]'
- ;;
-sysv5* | sco5v6* | unixware* | OpenUNIX*)
- symcode='[[ABDT]]'
- ;;
-sysv4)
- symcode='[[DFNSTU]]'
- ;;
-esac
-
-# If we're using GNU nm, then use its standard symbol codes.
-case `$NM -V 2>&1` in
-*GNU* | *'with BFD'*)
- symcode='[[ABCDGIRSTW]]' ;;
-esac
-
-# Transform an extracted symbol line into a proper C declaration.
-# Some systems (esp. on ia64) link data and code symbols differently,
-# so use this general approach.
-lt_cv_sys_global_symbol_to_cdecl="sed -n -e 's/^T .* \(.*\)$/extern int \1();/p' -e 's/^$symcode* .* \(.*\)$/extern char \1;/p'"
-
-# Transform an extracted symbol line into symbol name and symbol address
-lt_cv_sys_global_symbol_to_c_name_address="sed -n -e 's/^: \([[^ ]]*\)[[ ]]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p'"
-lt_cv_sys_global_symbol_to_c_name_address_lib_prefix="sed -n -e 's/^: \([[^ ]]*\)[[ ]]*$/ {\\\"\1\\\", (void *) 0},/p' -e 's/^$symcode* \([[^ ]]*\) \(lib[[^ ]]*\)$/ {\"\2\", (void *) \&\2},/p' -e 's/^$symcode* \([[^ ]]*\) \([[^ ]]*\)$/ {\"lib\2\", (void *) \&\2},/p'"
-
-# Handle CRLF in mingw tool chain
-opt_cr=
-case $build_os in
-mingw*)
- opt_cr=`$ECHO 'x\{0,1\}' | tr x '\015'` # option cr in regexp
- ;;
-esac
-
-# Try without a prefix underscore, then with it.
-for ac_symprfx in "" "_"; do
-
- # Transform symcode, sympat, and symprfx into a raw symbol and a C symbol.
- symxfrm="\\1 $ac_symprfx\\2 \\2"
-
- # Write the raw and C identifiers.
- if test "$lt_cv_nm_interface" = "MS dumpbin"; then
- # Fake it for dumpbin and say T for any non-static function
- # and D for any global variable.
- # Also find C++ and __fastcall symbols from MSVC++,
- # which start with @ or ?.
- lt_cv_sys_global_symbol_pipe="$AWK ['"\
-" {last_section=section; section=\$ 3};"\
-" /^COFF SYMBOL TABLE/{for(i in hide) delete hide[i]};"\
-" /Section length .*#relocs.*(pick any)/{hide[last_section]=1};"\
-" \$ 0!~/External *\|/{next};"\
-" / 0+ UNDEF /{next}; / UNDEF \([^|]\)*()/{next};"\
-" {if(hide[section]) next};"\
-" {f=0}; \$ 0~/\(\).*\|/{f=1}; {printf f ? \"T \" : \"D \"};"\
-" {split(\$ 0, a, /\||\r/); split(a[2], s)};"\
-" s[1]~/^[@?]/{print s[1], s[1]; next};"\
-" s[1]~prfx {split(s[1],t,\"@\"); print t[1], substr(t[1],length(prfx))}"\
-" ' prfx=^$ac_symprfx]"
- else
- lt_cv_sys_global_symbol_pipe="sed -n -e 's/^.*[[ ]]\($symcode$symcode*\)[[ ]][[ ]]*$ac_symprfx$sympat$opt_cr$/$symxfrm/p'"
- fi
- lt_cv_sys_global_symbol_pipe="$lt_cv_sys_global_symbol_pipe | sed '/ __gnu_lto/d'"
-
- # Check to see that the pipe works correctly.
- pipe_works=no
-
- rm -f conftest*
- cat > conftest.$ac_ext <<_LT_EOF
-#ifdef __cplusplus
-extern "C" {
-#endif
-char nm_test_var;
-void nm_test_func(void);
-void nm_test_func(void){}
-#ifdef __cplusplus
-}
-#endif
-int main(){nm_test_var='a';nm_test_func();return(0);}
-_LT_EOF
-
- if AC_TRY_EVAL(ac_compile); then
- # Now try to grab the symbols.
- nlist=conftest.nm
- if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $nlist) && test -s "$nlist"; then
- # Try sorting and uniquifying the output.
- if sort "$nlist" | uniq > "$nlist"T; then
- mv -f "$nlist"T "$nlist"
- else
- rm -f "$nlist"T
- fi
-
- # Make sure that we snagged all the symbols we need.
- if $GREP ' nm_test_var$' "$nlist" >/dev/null; then
- if $GREP ' nm_test_func$' "$nlist" >/dev/null; then
- cat <<_LT_EOF > conftest.$ac_ext
-/* Keep this code in sync between libtool.m4, ltmain, lt_system.h, and tests. */
-#if defined(_WIN32) || defined(__CYGWIN__) || defined(_WIN32_WCE)
-/* DATA imports from DLLs on WIN32 con't be const, because runtime
- relocations are performed -- see ld's documentation on pseudo-relocs. */
-# define LT@&t@_DLSYM_CONST
-#elif defined(__osf__)
-/* This system does not cope well with relocations in const data. */
-# define LT@&t@_DLSYM_CONST
-#else
-# define LT@&t@_DLSYM_CONST const
-#endif
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-_LT_EOF
- # Now generate the symbol file.
- eval "$lt_cv_sys_global_symbol_to_cdecl"' < "$nlist" | $GREP -v main >> conftest.$ac_ext'
-
- cat <<_LT_EOF >> conftest.$ac_ext
-
-/* The mapping between symbol names and symbols. */
-LT@&t@_DLSYM_CONST struct {
- const char *name;
- void *address;
-}
-lt__PROGRAM__LTX_preloaded_symbols[[]] =
-{
- { "@PROGRAM@", (void *) 0 },
-_LT_EOF
- $SED "s/^$symcode$symcode* \(.*\) \(.*\)$/ {\"\2\", (void *) \&\2},/" < "$nlist" | $GREP -v main >> conftest.$ac_ext
- cat <<\_LT_EOF >> conftest.$ac_ext
- {0, (void *) 0}
-};
-
-/* This works around a problem in FreeBSD linker */
-#ifdef FREEBSD_WORKAROUND
-static const void *lt_preloaded_setup() {
- return lt__PROGRAM__LTX_preloaded_symbols;
-}
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-_LT_EOF
- # Now try linking the two files.
- mv conftest.$ac_objext conftstm.$ac_objext
- lt_globsym_save_LIBS=$LIBS
- lt_globsym_save_CFLAGS=$CFLAGS
- LIBS="conftstm.$ac_objext"
- CFLAGS="$CFLAGS$_LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)"
- if AC_TRY_EVAL(ac_link) && test -s conftest${ac_exeext}; then
- pipe_works=yes
- fi
- LIBS=$lt_globsym_save_LIBS
- CFLAGS=$lt_globsym_save_CFLAGS
- else
- echo "cannot find nm_test_func in $nlist" >&AS_MESSAGE_LOG_FD
- fi
- else
- echo "cannot find nm_test_var in $nlist" >&AS_MESSAGE_LOG_FD
- fi
- else
- echo "cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
- fi
- else
- echo "$progname: failed program was:" >&AS_MESSAGE_LOG_FD
- cat conftest.$ac_ext >&5
- fi
- rm -rf conftest* conftst*
-
- # Do not use the global_symbol_pipe unless it works.
- if test "$pipe_works" = yes; then
- break
- else
- lt_cv_sys_global_symbol_pipe=
- fi
-done
-])
-if test -z "$lt_cv_sys_global_symbol_pipe"; then
- lt_cv_sys_global_symbol_to_cdecl=
-fi
-if test -z "$lt_cv_sys_global_symbol_pipe$lt_cv_sys_global_symbol_to_cdecl"; then
- AC_MSG_RESULT(failed)
-else
- AC_MSG_RESULT(ok)
-fi
-
-# Response file support.
-if test "$lt_cv_nm_interface" = "MS dumpbin"; then
- nm_file_list_spec='@'
-elif $NM --help 2>/dev/null | grep '[[@]]FILE' >/dev/null; then
- nm_file_list_spec='@'
-fi
-
-_LT_DECL([global_symbol_pipe], [lt_cv_sys_global_symbol_pipe], [1],
- [Take the output of nm and produce a listing of raw symbols and C names])
-_LT_DECL([global_symbol_to_cdecl], [lt_cv_sys_global_symbol_to_cdecl], [1],
- [Transform the output of nm in a proper C declaration])
-_LT_DECL([global_symbol_to_c_name_address],
- [lt_cv_sys_global_symbol_to_c_name_address], [1],
- [Transform the output of nm in a C name address pair])
-_LT_DECL([global_symbol_to_c_name_address_lib_prefix],
- [lt_cv_sys_global_symbol_to_c_name_address_lib_prefix], [1],
- [Transform the output of nm in a C name address pair when lib prefix is needed])
-_LT_DECL([], [nm_file_list_spec], [1],
- [Specify filename containing input files for $NM])
-]) # _LT_CMD_GLOBAL_SYMBOLS
-
-
-# _LT_COMPILER_PIC([TAGNAME])
-# ---------------------------
-m4_defun([_LT_COMPILER_PIC],
-[m4_require([_LT_TAG_COMPILER])dnl
-_LT_TAGVAR(lt_prog_compiler_wl, $1)=
-_LT_TAGVAR(lt_prog_compiler_pic, $1)=
-_LT_TAGVAR(lt_prog_compiler_static, $1)=
-
-m4_if([$1], [CXX], [
- # C++ specific cases for pic, static, wl, etc.
- if test "$GXX" = yes; then
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
-
- case $host_os in
- aix*)
- # All AIX code is PIC.
- if test "$host_cpu" = ia64; then
- # AIX 5 now supports IA64 processor
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- fi
- ;;
-
- amigaos*)
- case $host_cpu in
- powerpc)
- # see comment about AmigaOS4 .so support
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- m68k)
- # FIXME: we need at least 68020 code to build shared libraries, but
- # adding the `-m68020' flag to GCC prevents building anything better,
- # like `-m68040'.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
- ;;
- esac
- ;;
-
- beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
- # PIC is the default for these OSes.
- ;;
- mingw* | cygwin* | os2* | pw32* | cegcc*)
- # This hack is so that the source file can tell whether it is being
- # built for inclusion in a dll (and should export symbols for example).
- # Although the cygwin gcc ignores -fPIC, still need this for old-style
- # (--disable-auto-import) libraries
- m4_if([$1], [GCJ], [],
- [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
- ;;
- darwin* | rhapsody*)
- # PIC is the default on this platform
- # Common symbols not allowed in MH_DYLIB files
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
- ;;
- *djgpp*)
- # DJGPP does not support shared libraries at all
- _LT_TAGVAR(lt_prog_compiler_pic, $1)=
- ;;
- haiku*)
- # PIC is the default for Haiku.
- # The "-static" flag exists, but is broken.
- _LT_TAGVAR(lt_prog_compiler_static, $1)=
- ;;
- interix[[3-9]]*)
- # Interix 3.x gcc -fpic/-fPIC options generate broken code.
- # Instead, we relocate shared libraries at runtime.
- ;;
- sysv4*MP*)
- if test -d /usr/nec; then
- _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
- fi
- ;;
- hpux*)
- # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
- # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
- # sets the default TLS model and affects inlining.
- case $host_cpu in
- hppa*64*)
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- esac
- ;;
- *qnx* | *nto*)
- # QNX uses GNU C++, but need to define -shared option too, otherwise
- # it will coredump.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- esac
- else
- case $host_os in
- aix[[4-9]]*)
- # All AIX code is PIC.
- if test "$host_cpu" = ia64; then
- # AIX 5 now supports IA64 processor
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- else
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
- fi
- ;;
- chorus*)
- case $cc_basename in
- cxch68*)
- # Green Hills C++ Compiler
- # _LT_TAGVAR(lt_prog_compiler_static, $1)="--no_auto_instantiation -u __main -u __premain -u _abort -r $COOL_DIR/lib/libOrb.a $MVME_DIR/lib/CC/libC.a $MVME_DIR/lib/classix/libcx.s.a"
- ;;
- esac
- ;;
- mingw* | cygwin* | os2* | pw32* | cegcc*)
- # This hack is so that the source file can tell whether it is being
- # built for inclusion in a dll (and should export symbols for example).
- m4_if([$1], [GCJ], [],
- [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
- ;;
- dgux*)
- case $cc_basename in
- ec++*)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- ;;
- ghcx*)
- # Green Hills C++ Compiler
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
- ;;
- *)
- ;;
- esac
- ;;
- freebsd* | dragonfly*)
- # FreeBSD uses GNU C++
- ;;
- hpux9* | hpux10* | hpux11*)
- case $cc_basename in
- CC*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
- if test "$host_cpu" != ia64; then
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
- fi
- ;;
- aCC*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
- case $host_cpu in
- hppa*64*|ia64*)
- # +Z the default
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
- ;;
- esac
- ;;
- *)
- ;;
- esac
- ;;
- interix*)
- # This is c89, which is MS Visual C++ (no shared libs)
- # Anyone wants to do a port?
- ;;
- irix5* | irix6* | nonstopux*)
- case $cc_basename in
- CC*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- # CC pic flag -KPIC is the default.
- ;;
- *)
- ;;
- esac
- ;;
- linux* | k*bsd*-gnu | kopensolaris*-gnu)
- case $cc_basename in
- KCC*)
- # KAI C++ Compiler
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- ecpc* )
- # old Intel C++ for x86_64 which still supported -KPIC.
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
- ;;
- icpc* )
- # Intel C++, used to be incompatible with GCC.
- # ICC 10 doesn't accept -KPIC any more.
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
- ;;
- pgCC* | pgcpp*)
- # Portland Group C++ compiler
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
- cxx*)
- # Compaq C++
- # Make sure the PIC flag is empty. It appears that all Alpha
- # Linux and Compaq Tru64 Unix objects are PIC.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)=
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- ;;
- xlc* | xlC* | bgxl[[cC]]* | mpixl[[cC]]*)
- # IBM XL 8.0, 9.0 on PPC and BlueGene
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
- ;;
- *)
- case `$CC -V 2>&1 | sed 5q` in
- *Sun\ C*)
- # Sun C++ 5.9
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
- ;;
- esac
- ;;
- esac
- ;;
- lynxos*)
- ;;
- m88k*)
- ;;
- mvs*)
- case $cc_basename in
- cxx*)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-W c,exportall'
- ;;
- *)
- ;;
- esac
- ;;
- netbsd*)
- ;;
- *qnx* | *nto*)
- # QNX uses GNU C++, but need to define -shared option too, otherwise
- # it will coredump.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
- ;;
- osf3* | osf4* | osf5*)
- case $cc_basename in
- KCC*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='--backend -Wl,'
- ;;
- RCC*)
- # Rational C++ 2.4.1
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
- ;;
- cxx*)
- # Digital/Compaq C++
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- # Make sure the PIC flag is empty. It appears that all Alpha
- # Linux and Compaq Tru64 Unix objects are PIC.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)=
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- ;;
- *)
- ;;
- esac
- ;;
- psos*)
- ;;
- solaris*)
- case $cc_basename in
- CC* | sunCC*)
- # Sun C++ 4.2, 5.x and Centerline C++
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
- ;;
- gcx*)
- # Green Hills C++ Compiler
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
- ;;
- *)
- ;;
- esac
- ;;
- sunos4*)
- case $cc_basename in
- CC*)
- # Sun C++ 4.x
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
- lcc*)
- # Lucid
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
- ;;
- *)
- ;;
- esac
- ;;
- sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
- case $cc_basename in
- CC*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
- esac
- ;;
- tandem*)
- case $cc_basename in
- NCC*)
- # NonStop-UX NCC 3.20
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- ;;
- *)
- ;;
- esac
- ;;
- vxworks*)
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
- ;;
- esac
- fi
-],
-[
- if test "$GCC" = yes; then
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
-
- case $host_os in
- aix*)
- # All AIX code is PIC.
- if test "$host_cpu" = ia64; then
- # AIX 5 now supports IA64 processor
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- fi
- ;;
-
- amigaos*)
- case $host_cpu in
- powerpc)
- # see comment about AmigaOS4 .so support
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- m68k)
- # FIXME: we need at least 68020 code to build shared libraries, but
- # adding the `-m68020' flag to GCC prevents building anything better,
- # like `-m68040'.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-m68020 -resident32 -malways-restore-a4'
- ;;
- esac
- ;;
-
- beos* | irix5* | irix6* | nonstopux* | osf3* | osf4* | osf5*)
- # PIC is the default for these OSes.
- ;;
-
- mingw* | cygwin* | pw32* | os2* | cegcc*)
- # This hack is so that the source file can tell whether it is being
- # built for inclusion in a dll (and should export symbols for example).
- # Although the cygwin gcc ignores -fPIC, still need this for old-style
- # (--disable-auto-import) libraries
- m4_if([$1], [GCJ], [],
- [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
- ;;
-
- darwin* | rhapsody*)
- # PIC is the default on this platform
- # Common symbols not allowed in MH_DYLIB files
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fno-common'
- ;;
-
- haiku*)
- # PIC is the default for Haiku.
- # The "-static" flag exists, but is broken.
- _LT_TAGVAR(lt_prog_compiler_static, $1)=
- ;;
-
- hpux*)
- # PIC is the default for 64-bit PA HP-UX, but not for 32-bit
- # PA HP-UX. On IA64 HP-UX, PIC is the default but the pic flag
- # sets the default TLS model and affects inlining.
- case $host_cpu in
- hppa*64*)
- # +Z the default
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- esac
- ;;
-
- interix[[3-9]]*)
- # Interix 3.x gcc -fpic/-fPIC options generate broken code.
- # Instead, we relocate shared libraries at runtime.
- ;;
-
- msdosdjgpp*)
- # Just because we use GCC doesn't mean we suddenly get shared libraries
- # on systems that don't support them.
- _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
- enable_shared=no
- ;;
-
- *nto* | *qnx*)
- # QNX uses GNU C++, but need to define -shared option too, otherwise
- # it will coredump.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
- ;;
-
- sysv4*MP*)
- if test -d /usr/nec; then
- _LT_TAGVAR(lt_prog_compiler_pic, $1)=-Kconform_pic
- fi
- ;;
-
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- ;;
- esac
-
- case $cc_basename in
- nvcc*) # Cuda Compiler Driver 2.2
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Xlinker '
- if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
- _LT_TAGVAR(lt_prog_compiler_pic, $1)="-Xcompiler $_LT_TAGVAR(lt_prog_compiler_pic, $1)"
- fi
- ;;
- esac
- else
- # PORTME Check for flag to pass linker flags through the system compiler.
- case $host_os in
- aix*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- if test "$host_cpu" = ia64; then
- # AIX 5 now supports IA64 processor
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- else
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-bnso -bI:/lib/syscalls.exp'
- fi
- ;;
-
- mingw* | cygwin* | pw32* | os2* | cegcc*)
- # This hack is so that the source file can tell whether it is being
- # built for inclusion in a dll (and should export symbols for example).
- m4_if([$1], [GCJ], [],
- [_LT_TAGVAR(lt_prog_compiler_pic, $1)='-DDLL_EXPORT'])
- ;;
-
- hpux9* | hpux10* | hpux11*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- # PIC is the default for IA64 HP-UX and 64-bit HP-UX, but
- # not for PA HP-UX.
- case $host_cpu in
- hppa*64*|ia64*)
- # +Z the default
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='+Z'
- ;;
- esac
- # Is there a better lt_prog_compiler_static that works with the bundled CC?
- _LT_TAGVAR(lt_prog_compiler_static, $1)='${wl}-a ${wl}archive'
- ;;
-
- irix5* | irix6* | nonstopux*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- # PIC (with -KPIC) is the default.
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- ;;
-
- linux* | k*bsd*-gnu | kopensolaris*-gnu)
- case $cc_basename in
- # old Intel for x86_64 which still supported -KPIC.
- ecc*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
- ;;
- # icc used to be incompatible with GCC.
- # ICC 10 doesn't accept -KPIC any more.
- icc* | ifort*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
- ;;
- # Lahey Fortran 8.1.
- lf95*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='--shared'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='--static'
- ;;
- nagfor*)
- # NAG Fortran compiler
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,-Wl,,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
- pgcc* | pgf77* | pgf90* | pgf95* | pgfortran*)
- # Portland Group compilers (*not* the Pentium gcc compiler,
- # which looks to be a dead project)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
- ccc*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- # All Alpha code is PIC.
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- ;;
- xl* | bgxl* | bgf* | mpixl*)
- # IBM XL C 8.0/Fortran 10.1, 11.1 on PPC and BlueGene
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-qpic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-qstaticlink'
- ;;
- *)
- case `$CC -V 2>&1 | sed 5q` in
- *Sun\ Ceres\ Fortran* | *Sun*Fortran*\ [[1-7]].* | *Sun*Fortran*\ 8.[[0-3]]*)
- # Sun Fortran 8.3 passes all unrecognized flags to the linker
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- _LT_TAGVAR(lt_prog_compiler_wl, $1)=''
- ;;
- *Sun\ F* | *Sun*Fortran*)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
- ;;
- *Sun\ C*)
- # Sun C 5.9
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- ;;
- *Intel*\ [[CF]]*Compiler*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-static'
- ;;
- *Portland\ Group*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fpic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
- esac
- ;;
- esac
- ;;
-
- newsos6)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
-
- *nto* | *qnx*)
- # QNX uses GNU C++, but need to define -shared option too, otherwise
- # it will coredump.
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-fPIC -shared'
- ;;
-
- osf3* | osf4* | osf5*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- # All OSF/1 code is PIC.
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- ;;
-
- rdos*)
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-non_shared'
- ;;
-
- solaris*)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- case $cc_basename in
- f77* | f90* | f95* | sunf77* | sunf90* | sunf95*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld ';;
- *)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,';;
- esac
- ;;
-
- sunos4*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Qoption ld '
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-PIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
-
- sysv4 | sysv4.2uw2* | sysv4.3*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
-
- sysv4*MP*)
- if test -d /usr/nec ;then
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-Kconform_pic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- fi
- ;;
-
- sysv5* | unixware* | sco3.2v5* | sco5v6* | OpenUNIX*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-KPIC'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
-
- unicos*)
- _LT_TAGVAR(lt_prog_compiler_wl, $1)='-Wl,'
- _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
- ;;
-
- uts4*)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)='-pic'
- _LT_TAGVAR(lt_prog_compiler_static, $1)='-Bstatic'
- ;;
-
- *)
- _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no
- ;;
- esac
- fi
-])
-case $host_os in
- # For platforms which do not support PIC, -DPIC is meaningless:
- *djgpp*)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)=
- ;;
- *)
- _LT_TAGVAR(lt_prog_compiler_pic, $1)="$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])"
- ;;
-esac
-
-AC_CACHE_CHECK([for $compiler option to produce PIC],
- [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)],
- [_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_prog_compiler_pic, $1)])
-_LT_TAGVAR(lt_prog_compiler_pic, $1)=$_LT_TAGVAR(lt_cv_prog_compiler_pic, $1)
-
-#
-# Check to make sure the PIC flag actually works.
-#
-if test -n "$_LT_TAGVAR(lt_prog_compiler_pic, $1)"; then
- _LT_COMPILER_OPTION([if $compiler PIC flag $_LT_TAGVAR(lt_prog_compiler_pic, $1) works],
- [_LT_TAGVAR(lt_cv_prog_compiler_pic_works, $1)],
- [$_LT_TAGVAR(lt_prog_compiler_pic, $1)@&t@m4_if([$1],[],[ -DPIC],[m4_if([$1],[CXX],[ -DPIC],[])])], [],
- [case $_LT_TAGVAR(lt_prog_compiler_pic, $1) in
- "" | " "*) ;;
- *) _LT_TAGVAR(lt_prog_compiler_pic, $1)=" $_LT_TAGVAR(lt_prog_compiler_pic, $1)" ;;
- esac],
- [_LT_TAGVAR(lt_prog_compiler_pic, $1)=
- _LT_TAGVAR(lt_prog_compiler_can_build_shared, $1)=no])
-fi
-_LT_TAGDECL([pic_flag], [lt_prog_compiler_pic], [1],
- [Additional compiler flags for building library objects])
-
-_LT_TAGDECL([wl], [lt_prog_compiler_wl], [1],
- [How to pass a linker flag through the compiler])
-#
-# Check to make sure the static flag actually works.
-#
-wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1) eval lt_tmp_static_flag=\"$_LT_TAGVAR(lt_prog_compiler_static, $1)\"
-_LT_LINKER_OPTION([if $compiler static flag $lt_tmp_static_flag works],
- _LT_TAGVAR(lt_cv_prog_compiler_static_works, $1),
- $lt_tmp_static_flag,
- [],
- [_LT_TAGVAR(lt_prog_compiler_static, $1)=])
-_LT_TAGDECL([link_static_flag], [lt_prog_compiler_static], [1],
- [Compiler flag to prevent dynamic linking])
-])# _LT_COMPILER_PIC
-
-
-# _LT_LINKER_SHLIBS([TAGNAME])
-# ----------------------------
-# See if the linker supports building shared libraries.
-m4_defun([_LT_LINKER_SHLIBS],
-[AC_REQUIRE([LT_PATH_LD])dnl
-AC_REQUIRE([LT_PATH_NM])dnl
-m4_require([_LT_PATH_MANIFEST_TOOL])dnl
-m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-m4_require([_LT_DECL_EGREP])dnl
-m4_require([_LT_DECL_SED])dnl
-m4_require([_LT_CMD_GLOBAL_SYMBOLS])dnl
-m4_require([_LT_TAG_COMPILER])dnl
-AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
-m4_if([$1], [CXX], [
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
- _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
- case $host_os in
- aix[[4-9]]*)
- # If we're using GNU nm, then we don't want the "-C" option.
- # -C means demangle to AIX nm, but means don't demangle with GNU nm
- # Also, AIX nm treats weak defined symbols like other global defined
- # symbols, whereas GNU nm marks them as "W".
- if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
- else
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
- fi
- ;;
- pw32*)
- _LT_TAGVAR(export_symbols_cmds, $1)="$ltdll_cmds"
- ;;
- cygwin* | mingw* | cegcc*)
- case $cc_basename in
- cl*)
- _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
- ;;
- *)
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
- _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
- ;;
- esac
- ;;
- *)
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
- ;;
- esac
-], [
- runpath_var=
- _LT_TAGVAR(allow_undefined_flag, $1)=
- _LT_TAGVAR(always_export_symbols, $1)=no
- _LT_TAGVAR(archive_cmds, $1)=
- _LT_TAGVAR(archive_expsym_cmds, $1)=
- _LT_TAGVAR(compiler_needs_object, $1)=no
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
- _LT_TAGVAR(export_dynamic_flag_spec, $1)=
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED '\''s/.* //'\'' | sort | uniq > $export_symbols'
- _LT_TAGVAR(hardcode_automatic, $1)=no
- _LT_TAGVAR(hardcode_direct, $1)=no
- _LT_TAGVAR(hardcode_direct_absolute, $1)=no
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
- _LT_TAGVAR(hardcode_libdir_separator, $1)=
- _LT_TAGVAR(hardcode_minus_L, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
- _LT_TAGVAR(inherit_rpath, $1)=no
- _LT_TAGVAR(link_all_deplibs, $1)=unknown
- _LT_TAGVAR(module_cmds, $1)=
- _LT_TAGVAR(module_expsym_cmds, $1)=
- _LT_TAGVAR(old_archive_from_new_cmds, $1)=
- _LT_TAGVAR(old_archive_from_expsyms_cmds, $1)=
- _LT_TAGVAR(thread_safe_flag_spec, $1)=
- _LT_TAGVAR(whole_archive_flag_spec, $1)=
- # include_expsyms should be a list of space-separated symbols to be *always*
- # included in the symbol list
- _LT_TAGVAR(include_expsyms, $1)=
- # exclude_expsyms can be an extended regexp of symbols to exclude
- # it will be wrapped by ` (' and `)$', so one must not match beginning or
- # end of line. Example: `a|bc|.*d.*' will exclude the symbols `a' and `bc',
- # as well as any symbol that contains `d'.
- _LT_TAGVAR(exclude_expsyms, $1)=['_GLOBAL_OFFSET_TABLE_|_GLOBAL__F[ID]_.*']
- # Although _GLOBAL_OFFSET_TABLE_ is a valid symbol C name, most a.out
- # platforms (ab)use it in PIC code, but their linkers get confused if
- # the symbol is explicitly referenced. Since portable code cannot
- # rely on this symbol name, it's probably fine to never include it in
- # preloaded symbol tables.
- # Exclude shared library initialization/finalization symbols.
-dnl Note also adjust exclude_expsyms for C++ above.
- extract_expsyms_cmds=
-
- case $host_os in
- cygwin* | mingw* | pw32* | cegcc*)
- # FIXME: the MSVC++ port hasn't been tested in a loooong time
- # When not using gcc, we currently assume that we are using
- # Microsoft Visual C++.
- if test "$GCC" != yes; then
- with_gnu_ld=no
- fi
- ;;
- interix*)
- # we just hope/assume this is gcc and not c89 (= MSVC++)
- with_gnu_ld=yes
- ;;
- openbsd*)
- with_gnu_ld=no
- ;;
- esac
-
- _LT_TAGVAR(ld_shlibs, $1)=yes
-
- # On some targets, GNU ld is compatible enough with the native linker
- # that we're better off using the native interface for both.
- lt_use_gnu_ld_interface=no
- if test "$with_gnu_ld" = yes; then
- case $host_os in
- aix*)
- # The AIX port of GNU ld has always aspired to compatibility
- # with the native linker. However, as the warning in the GNU ld
- # block says, versions before 2.19.5* couldn't really create working
- # shared libraries, regardless of the interface used.
- case `$LD -v 2>&1` in
- *\ \(GNU\ Binutils\)\ 2.19.5*) ;;
- *\ \(GNU\ Binutils\)\ 2.[[2-9]]*) ;;
- *\ \(GNU\ Binutils\)\ [[3-9]]*) ;;
- *)
- lt_use_gnu_ld_interface=yes
- ;;
- esac
- ;;
- *)
- lt_use_gnu_ld_interface=yes
- ;;
- esac
- fi
-
- if test "$lt_use_gnu_ld_interface" = yes; then
- # If archive_cmds runs LD, not CC, wlarc should be empty
- wlarc='${wl}'
-
- # Set some defaults for GNU ld with shared library support. These
- # are reset later if shared libraries are not supported. Putting them
- # here allows them to be overridden if necessary.
- runpath_var=LD_RUN_PATH
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
- # ancient GNU ld didn't support --whole-archive et. al.
- if $LD --help 2>&1 | $GREP 'no-whole-archive' > /dev/null; then
- _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
- else
- _LT_TAGVAR(whole_archive_flag_spec, $1)=
- fi
- supports_anon_versioning=no
- case `$LD -v 2>&1` in
- *GNU\ gold*) supports_anon_versioning=yes ;;
- *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.10.*) ;; # catch versions < 2.11
- *\ 2.11.93.0.2\ *) supports_anon_versioning=yes ;; # RH7.3 ...
- *\ 2.11.92.0.12\ *) supports_anon_versioning=yes ;; # Mandrake 8.2 ...
- *\ 2.11.*) ;; # other 2.11 versions
- *) supports_anon_versioning=yes ;;
- esac
-
- # See if GNU ld supports shared libraries.
- case $host_os in
- aix[[3-9]]*)
- # On AIX/PPC, the GNU linker is very broken
- if test "$host_cpu" != ia64; then
- _LT_TAGVAR(ld_shlibs, $1)=no
- cat <<_LT_EOF 1>&2
-
-*** Warning: the GNU linker, at least up to release 2.19, is reported
-*** to be unable to reliably create shared libraries on AIX.
-*** Therefore, libtool is disabling shared libraries support. If you
-*** really care for shared libraries, you may want to install binutils
-*** 2.20 or above, or modify your PATH so that a non-GNU linker is found.
-*** You will then need to restart the configuration process.
-
-_LT_EOF
- fi
- ;;
-
- amigaos*)
- case $host_cpu in
- powerpc)
- # see comment about AmigaOS4 .so support
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)=''
- ;;
- m68k)
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- ;;
- esac
- ;;
-
- beos*)
- if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
- # support --undefined. This deserves some investigation. FIXME
- _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- cygwin* | mingw* | pw32* | cegcc*)
- # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
- # as there is no search path for DLLs.
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(always_export_symbols, $1)=no
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1 DATA/;s/^.*[[ ]]__nm__\([[^ ]]*\)[[ ]][[^ ]]*/\1 DATA/;/^I[[ ]]/d;/^[[AITW]][[ ]]/s/.* //'\'' | sort | uniq > $export_symbols'
- _LT_TAGVAR(exclude_expsyms, $1)=['[_]+GLOBAL_OFFSET_TABLE_|[_]+GLOBAL__[FID]_.*|[_]+head_[A-Za-z0-9_]+_dll|[A-Za-z0-9_]+_dll_iname']
-
- if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
- # If the export-symbols file already is a .def file (1st line
- # is EXPORTS), use it as is; otherwise, prepend...
- _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
- cp $export_symbols $output_objdir/$soname.def;
- else
- echo EXPORTS > $output_objdir/$soname.def;
- cat $export_symbols >> $output_objdir/$soname.def;
- fi~
- $CC -shared $output_objdir/$soname.def $libobjs $deplibs $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- haiku*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- ;;
-
- interix[[3-9]]*)
- _LT_TAGVAR(hardcode_direct, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
- # Instead, shared libraries are loaded at an image base (0x10000000 by
- # default) and relocated if they conflict, which is a slow very memory
- # consuming and fragmenting process. To avoid this, we pick a random,
- # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
- # time. Moving up from 0x10000000 also allows more sbrk(2) space.
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
- ;;
-
- gnu* | linux* | tpf* | k*bsd*-gnu | kopensolaris*-gnu)
- tmp_diet=no
- if test "$host_os" = linux-dietlibc; then
- case $cc_basename in
- diet\ *) tmp_diet=yes;; # linux-dietlibc with static linking (!diet-dyn)
- esac
- fi
- if $LD --help 2>&1 | $EGREP ': supported targets:.* elf' > /dev/null \
- && test "$tmp_diet" = no
- then
- tmp_addflag=' $pic_flag'
- tmp_sharedflag='-shared'
- case $cc_basename,$host_cpu in
- pgcc*) # Portland Group C compiler
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
- tmp_addflag=' $pic_flag'
- ;;
- pgf77* | pgf90* | pgf95* | pgfortran*)
- # Portland Group f77 and f90 compilers
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
- tmp_addflag=' $pic_flag -Mnomain' ;;
- ecc*,ia64* | icc*,ia64*) # Intel C compiler on ia64
- tmp_addflag=' -i_dynamic' ;;
- efc*,ia64* | ifort*,ia64*) # Intel Fortran compiler on ia64
- tmp_addflag=' -i_dynamic -nofor_main' ;;
- ifc* | ifort*) # Intel Fortran compiler
- tmp_addflag=' -nofor_main' ;;
- lf95*) # Lahey Fortran 8.1
- _LT_TAGVAR(whole_archive_flag_spec, $1)=
- tmp_sharedflag='--shared' ;;
- xl[[cC]]* | bgxl[[cC]]* | mpixl[[cC]]*) # IBM XL C 8.0 on PPC (deal with xlf below)
- tmp_sharedflag='-qmkshrobj'
- tmp_addflag= ;;
- nvcc*) # Cuda Compiler Driver 2.2
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
- _LT_TAGVAR(compiler_needs_object, $1)=yes
- ;;
- esac
- case `$CC -V 2>&1 | sed 5q` in
- *Sun\ C*) # Sun C 5.9
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
- _LT_TAGVAR(compiler_needs_object, $1)=yes
- tmp_sharedflag='-G' ;;
- *Sun\ F*) # Sun Fortran 8.3
- tmp_sharedflag='-G' ;;
- esac
- _LT_TAGVAR(archive_cmds, $1)='$CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
-
- if test "x$supports_anon_versioning" = xyes; then
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
- cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
- echo "local: *; };" >> $output_objdir/$libname.ver~
- $CC '"$tmp_sharedflag""$tmp_addflag"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
- fi
-
- case $cc_basename in
- xlf* | bgf* | bgxlf* | mpixlf*)
- # IBM XL Fortran 10.1 on PPC cannot create shared libs itself
- _LT_TAGVAR(whole_archive_flag_spec, $1)='--whole-archive$convenience --no-whole-archive'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(archive_cmds, $1)='$LD -shared $libobjs $deplibs $linker_flags -soname $soname -o $lib'
- if test "x$supports_anon_versioning" = xyes; then
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
- cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
- echo "local: *; };" >> $output_objdir/$libname.ver~
- $LD -shared $libobjs $deplibs $linker_flags -soname $soname -version-script $output_objdir/$libname.ver -o $lib'
- fi
- ;;
- esac
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- netbsd*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable $libobjs $deplibs $linker_flags -o $lib'
- wlarc=
- else
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
- fi
- ;;
-
- solaris*)
- if $LD -v 2>&1 | $GREP 'BFD 2\.8' > /dev/null; then
- _LT_TAGVAR(ld_shlibs, $1)=no
- cat <<_LT_EOF 1>&2
-
-*** Warning: The releases 2.8.* of the GNU linker cannot reliably
-*** create shared libraries on Solaris systems. Therefore, libtool
-*** is disabling shared libraries support. We urge you to upgrade GNU
-*** binutils to release 2.9.1 or newer. Another option is to modify
-*** your PATH or compiler configuration so that the native linker is
-*** used, and then restart.
-
-_LT_EOF
- elif $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- sysv5* | sco3.2v5* | sco5v6* | unixware* | OpenUNIX*)
- case `$LD -v 2>&1` in
- *\ [[01]].* | *\ 2.[[0-9]].* | *\ 2.1[[0-5]].*)
- _LT_TAGVAR(ld_shlibs, $1)=no
- cat <<_LT_EOF 1>&2
-
-*** Warning: Releases of the GNU linker prior to 2.16.91.0.3 can not
-*** reliably create shared libraries on SCO systems. Therefore, libtool
-*** is disabling shared libraries support. We urge you to upgrade GNU
-*** binutils to release 2.16.91.0.3 or newer. Another option is to modify
-*** your PATH or compiler configuration so that the native linker is
-*** used, and then restart.
-
-_LT_EOF
- ;;
- *)
- # For security reasons, it is highly recommended that you always
- # use absolute paths for naming shared libraries, and exclude the
- # DT_RUNPATH tag from executables and libraries. But doing so
- # requires that you compile everything twice, which is a pain.
- if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
- esac
- ;;
-
- sunos4*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bshareable -o $lib $libobjs $deplibs $linker_flags'
- wlarc=
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- *)
- if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
- esac
-
- if test "$_LT_TAGVAR(ld_shlibs, $1)" = no; then
- runpath_var=
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
- _LT_TAGVAR(export_dynamic_flag_spec, $1)=
- _LT_TAGVAR(whole_archive_flag_spec, $1)=
- fi
- else
- # PORTME fill in a description of your system's linker (not GNU ld)
- case $host_os in
- aix3*)
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(always_export_symbols, $1)=yes
- _LT_TAGVAR(archive_expsym_cmds, $1)='$LD -o $output_objdir/$soname $libobjs $deplibs $linker_flags -bE:$export_symbols -T512 -H512 -bM:SRE~$AR $AR_FLAGS $lib $output_objdir/$soname'
- # Note: this linker hardcodes the directories in LIBPATH if there
- # are no directories specified by -L.
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- if test "$GCC" = yes && test -z "$lt_prog_compiler_static"; then
- # Neither direct hardcoding nor static linking is supported with a
- # broken collect2.
- _LT_TAGVAR(hardcode_direct, $1)=unsupported
- fi
- ;;
-
- aix[[4-9]]*)
- if test "$host_cpu" = ia64; then
- # On IA64, the linker does run time linking by default, so we don't
- # have to do anything special.
- aix_use_runtimelinking=no
- exp_sym_flag='-Bexport'
- no_entry_flag=""
- else
- # If we're using GNU nm, then we don't want the "-C" option.
- # -C means demangle to AIX nm, but means don't demangle with GNU nm
- # Also, AIX nm treats weak defined symbols like other global
- # defined symbols, whereas GNU nm marks them as "W".
- if $NM -V 2>&1 | $GREP 'GNU' > /dev/null; then
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM -Bpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B") || (\$ 2 == "W")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
- else
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM -BCpg $libobjs $convenience | awk '\''{ if (((\$ 2 == "T") || (\$ 2 == "D") || (\$ 2 == "B")) && ([substr](\$ 3,1,1) != ".")) { print \$ 3 } }'\'' | sort -u > $export_symbols'
- fi
- aix_use_runtimelinking=no
-
- # Test if we are trying to use run time linking or normal
- # AIX style linking. If -brtl is somewhere in LDFLAGS, we
- # need to do runtime linking.
- case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
- for ld_flag in $LDFLAGS; do
- if (test $ld_flag = "-brtl" || test $ld_flag = "-Wl,-brtl"); then
- aix_use_runtimelinking=yes
- break
- fi
- done
- ;;
- esac
-
- exp_sym_flag='-bexport'
- no_entry_flag='-bnoentry'
- fi
-
- # When large executables or shared objects are built, AIX ld can
- # have problems creating the table of contents. If linking a library
- # or program results in "error TOC overflow" add -mminimal-toc to
- # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
- # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
-
- _LT_TAGVAR(archive_cmds, $1)=''
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
-
- if test "$GCC" = yes; then
- case $host_os in aix4.[[012]]|aix4.[[012]].*)
- # We only want to do this on AIX 4.2 and lower, the check
- # below for broken collect2 doesn't work under 4.3+
- collect2name=`${CC} -print-prog-name=collect2`
- if test -f "$collect2name" &&
- strings "$collect2name" | $GREP resolve_lib_name >/dev/null
- then
- # We have reworked collect2
- :
- else
- # We have old collect2
- _LT_TAGVAR(hardcode_direct, $1)=unsupported
- # It fails to find uninstalled libraries when the uninstalled
- # path is not listed in the libpath. Setting hardcode_minus_L
- # to unsupported forces relinking
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=
- fi
- ;;
- esac
- shared_flag='-shared'
- if test "$aix_use_runtimelinking" = yes; then
- shared_flag="$shared_flag "'${wl}-G'
- fi
- else
- # not using gcc
- if test "$host_cpu" = ia64; then
- # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
- # chokes on -Wl,-G. The following line is correct:
- shared_flag='-G'
- else
- if test "$aix_use_runtimelinking" = yes; then
- shared_flag='${wl}-G'
- else
- shared_flag='${wl}-bM:SRE'
- fi
- fi
- fi
-
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
- # It seems that -bexpall does not export symbols beginning with
- # underscore (_), so it is better to generate a list of symbols to export.
- _LT_TAGVAR(always_export_symbols, $1)=yes
- if test "$aix_use_runtimelinking" = yes; then
- # Warning - without using the other runtime loading flags (-brtl),
- # -berok will link without error, but may produce a broken library.
- _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
- # Determine the default libpath from the value encoded in an
- # empty executable.
- _LT_SYS_MODULE_PATH_AIX([$1])
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
- else
- if test "$host_cpu" = ia64; then
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
- _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
- _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
- else
- # Determine the default libpath from the value encoded in an
- # empty executable.
- _LT_SYS_MODULE_PATH_AIX([$1])
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
- # Warning - without using the other run time loading flags,
- # -berok will link without error, but may produce a broken library.
- _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
- _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
- if test "$with_gnu_ld" = yes; then
- # We only use this code for GNU lds that support --whole-archive.
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
- else
- # Exported symbols can be pulled into shared objects from archives
- _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
- fi
- _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
- # This is similar to how AIX traditionally builds its shared libraries.
- _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
- fi
- fi
- ;;
-
- amigaos*)
- case $host_cpu in
- powerpc)
- # see comment about AmigaOS4 .so support
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)=''
- ;;
- m68k)
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/a2ixlibrary.data~$ECHO "#define NAME $libname" > $output_objdir/a2ixlibrary.data~$ECHO "#define LIBRARY_ID 1" >> $output_objdir/a2ixlibrary.data~$ECHO "#define VERSION $major" >> $output_objdir/a2ixlibrary.data~$ECHO "#define REVISION $revision" >> $output_objdir/a2ixlibrary.data~$AR $AR_FLAGS $lib $libobjs~$RANLIB $lib~(cd $output_objdir && a2ixlibrary -32)'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- ;;
- esac
- ;;
-
- bsdi[[45]]*)
- _LT_TAGVAR(export_dynamic_flag_spec, $1)=-rdynamic
- ;;
-
- cygwin* | mingw* | pw32* | cegcc*)
- # When not using gcc, we currently assume that we are using
- # Microsoft Visual C++.
- # hardcode_libdir_flag_spec is actually meaningless, as there is
- # no search path for DLLs.
- case $cc_basename in
- cl*)
- # Native MSVC
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(always_export_symbols, $1)=yes
- _LT_TAGVAR(file_list_spec, $1)='@'
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
- _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
- sed -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
- else
- sed -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
- fi~
- $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
- linknames='
- # The linker will not automatically build a static lib if we build a DLL.
- # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
- _LT_TAGVAR(exclude_expsyms, $1)='_NULL_IMPORT_DESCRIPTOR|_IMPORT_DESCRIPTOR_.*'
- _LT_TAGVAR(export_symbols_cmds, $1)='$NM $libobjs $convenience | $global_symbol_pipe | $SED -e '\''/^[[BCDGRS]][[ ]]/s/.*[[ ]]\([[^ ]]*\)/\1,DATA/'\'' | $SED -e '\''/^[[AITW]][[ ]]/s/.*[[ ]]//'\'' | sort | uniq > $export_symbols'
- # Don't use ranlib
- _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib'
- _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~
- lt_tool_outputfile="@TOOL_OUTPUT@"~
- case $lt_outputfile in
- *.exe|*.EXE) ;;
- *)
- lt_outputfile="$lt_outputfile.exe"
- lt_tool_outputfile="$lt_tool_outputfile.exe"
- ;;
- esac~
- if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
- $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
- $RM "$lt_outputfile.manifest";
- fi'
- ;;
- *)
- # Assume MSVC wrapper
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- _LT_TAGVAR(archive_cmds, $1)='$CC -o $lib $libobjs $compiler_flags `func_echo_all "$deplibs" | $SED '\''s/ -lc$//'\''` -link -dll~linknames='
- # The linker will automatically build a .lib file if we build a DLL.
- _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
- # FIXME: Should let the user specify the lib program.
- _LT_TAGVAR(old_archive_cmds, $1)='lib -OUT:$oldlib$oldobjs$old_deplibs'
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
- ;;
- esac
- ;;
-
- darwin* | rhapsody*)
- _LT_DARWIN_LINKER_FEATURES($1)
- ;;
-
- dgux*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- # FreeBSD 2.2.[012] allows us to include c++rt0.o to get C++ constructor
- # support. Future versions do this automatically, but an explicit c++rt0.o
- # does not break anything, and helps significantly (at the cost of a little
- # extra space).
- freebsd2.2*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags /usr/lib/c++rt0.o'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- # Unfortunately, older versions of FreeBSD 2 do not have this feature.
- freebsd2.*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- # FreeBSD 3 and greater uses gcc -shared to do shared libraries.
- freebsd* | dragonfly*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- hpux9*)
- if test "$GCC" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $libobjs $deplibs $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
- else
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$LD -b +b $install_libdir -o $output_objdir/$soname $libobjs $deplibs $linker_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
- fi
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- _LT_TAGVAR(hardcode_direct, $1)=yes
-
- # hardcode_minus_L: Not really in the search PATH,
- # but as the default location of the library.
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- ;;
-
- hpux10*)
- if test "$GCC" = yes && test "$with_gnu_ld" = no; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
- else
- _LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'
- fi
- if test "$with_gnu_ld" = no; then
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- # hardcode_minus_L: Not really in the search PATH,
- # but as the default location of the library.
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- fi
- ;;
-
- hpux11*)
- if test "$GCC" = yes && test "$with_gnu_ld" = no; then
- case $host_cpu in
- hppa*64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- ia64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- esac
- else
- case $host_cpu in
- hppa*64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- ia64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- *)
- m4_if($1, [], [
- # Older versions of the 11.00 compiler do not understand -b yet
- # (HP92453-01 A.11.01.20 doesn't, HP92453-01 B.11.X.35175-35176.GP does)
- _LT_LINKER_OPTION([if $CC understands -b],
- _LT_TAGVAR(lt_cv_prog_compiler__b, $1), [-b],
- [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'],
- [_LT_TAGVAR(archive_cmds, $1)='$LD -b +h $soname +b $install_libdir -o $lib $libobjs $deplibs $linker_flags'])],
- [_LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $libobjs $deplibs $compiler_flags'])
- ;;
- esac
- fi
- if test "$with_gnu_ld" = no; then
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
-
- case $host_cpu in
- hppa*64*|ia64*)
- _LT_TAGVAR(hardcode_direct, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
- *)
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
-
- # hardcode_minus_L: Not really in the search PATH,
- # but as the default location of the library.
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- ;;
- esac
- fi
- ;;
-
- irix5* | irix6* | nonstopux*)
- if test "$GCC" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- # Try to use the -exported_symbol ld option, if it does not
- # work, assume that -exports_file does not work either and
- # implicitly export all symbols.
- # This should be the same for all languages, so no per-tag cache variable.
- AC_CACHE_CHECK([whether the $host_os linker accepts -exported_symbol],
- [lt_cv_irix_exported_symbol],
- [save_LDFLAGS="$LDFLAGS"
- LDFLAGS="$LDFLAGS -shared ${wl}-exported_symbol ${wl}foo ${wl}-update_registry ${wl}/dev/null"
- AC_LINK_IFELSE(
- [AC_LANG_SOURCE(
- [AC_LANG_CASE([C], [[int foo (void) { return 0; }]],
- [C++], [[int foo (void) { return 0; }]],
- [Fortran 77], [[
- subroutine foo
- end]],
- [Fortran], [[
- subroutine foo
- end]])])],
- [lt_cv_irix_exported_symbol=yes],
- [lt_cv_irix_exported_symbol=no])
- LDFLAGS="$save_LDFLAGS"])
- if test "$lt_cv_irix_exported_symbol" = yes; then
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations ${wl}-exports_file ${wl}$export_symbols -o $lib'
- fi
- else
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -exports_file $export_symbols -o $lib'
- fi
- _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- _LT_TAGVAR(inherit_rpath, $1)=yes
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- ;;
-
- netbsd*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags' # a.out
- else
- _LT_TAGVAR(archive_cmds, $1)='$LD -shared -o $lib $libobjs $deplibs $linker_flags' # ELF
- fi
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- newsos6)
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- *nto* | *qnx*)
- ;;
-
- openbsd*)
- if test -f /usr/libexec/ld.so; then
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- if test -z "`echo __ELF__ | $CC -E - | $GREP __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags ${wl}-retain-symbols-file,$export_symbols'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- else
- case $host_os in
- openbsd[[01]].* | openbsd2.[[0-7]] | openbsd2.[[0-7]].*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- ;;
- esac
- fi
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- os2*)
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(archive_cmds, $1)='$ECHO "LIBRARY $libname INITINSTANCE" > $output_objdir/$libname.def~$ECHO "DESCRIPTION \"$libname\"" >> $output_objdir/$libname.def~echo DATA >> $output_objdir/$libname.def~echo " SINGLE NONSHARED" >> $output_objdir/$libname.def~echo EXPORTS >> $output_objdir/$libname.def~emxexp $libobjs >> $output_objdir/$libname.def~$CC -Zdll -Zcrtdll -o $lib $libobjs $deplibs $compiler_flags $output_objdir/$libname.def'
- _LT_TAGVAR(old_archive_from_new_cmds, $1)='emximp -o $output_objdir/$libname.a $output_objdir/$libname.def'
- ;;
-
- osf3*)
- if test "$GCC" = yes; then
- _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- else
- _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- fi
- _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- ;;
-
- osf4* | osf5*) # as osf3* with the addition of -msym flag
- if test "$GCC" = yes; then
- _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $pic_flag $libobjs $deplibs $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- else
- _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $libobjs $deplibs $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done; printf "%s\\n" "-hidden">> $lib.exp~
- $CC -shared${allow_undefined_flag} ${wl}-input ${wl}$lib.exp $compiler_flags $libobjs $deplibs -soname $soname `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~$RM $lib.exp'
-
- # Both c and cxx compiler support -rpath directly
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
- fi
- _LT_TAGVAR(archive_cmds_need_lc, $1)='no'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- ;;
-
- solaris*)
- _LT_TAGVAR(no_undefined_flag, $1)=' -z defs'
- if test "$GCC" = yes; then
- wlarc='${wl}'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared $pic_flag ${wl}-z ${wl}text ${wl}-M ${wl}$lib.exp ${wl}-h ${wl}$soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
- else
- case `$CC -V 2>&1` in
- *"Compilers 5.0"*)
- wlarc=''
- _LT_TAGVAR(archive_cmds, $1)='$LD -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $LD -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $linker_flags~$RM $lib.exp'
- ;;
- *)
- wlarc='${wl}'
- _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h $soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -G${allow_undefined_flag} -M $lib.exp -h $soname -o $lib $libobjs $deplibs $compiler_flags~$RM $lib.exp'
- ;;
- esac
- fi
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- case $host_os in
- solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
- *)
- # The compiler driver will combine and reorder linker options,
- # but understands `-z linker_flag'. GCC discards it without `$wl',
- # but is careful enough not to reorder.
- # Supported since Solaris 2.6 (maybe 2.5.1?)
- if test "$GCC" = yes; then
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
- else
- _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
- fi
- ;;
- esac
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- ;;
-
- sunos4*)
- if test "x$host_vendor" = xsequent; then
- # Use $CC to link under sequent, because it throws in some extra .o
- # files that make .init and .fini sections work.
- _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h $soname -o $lib $libobjs $deplibs $compiler_flags'
- else
- _LT_TAGVAR(archive_cmds, $1)='$LD -assert pure-text -Bstatic -o $lib $libobjs $deplibs $linker_flags'
- fi
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- sysv4)
- case $host_vendor in
- sni)
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_direct, $1)=yes # is this really true???
- ;;
- siemens)
- ## LD is ld it makes a PLAMLIB
- ## CC just makes a GrossModule.
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(reload_cmds, $1)='$CC -r -o $output$reload_objs'
- _LT_TAGVAR(hardcode_direct, $1)=no
- ;;
- motorola)
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_direct, $1)=no #Motorola manual says yes, but my tests say they lie
- ;;
- esac
- runpath_var='LD_RUN_PATH'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- sysv4.3*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='-Bexport'
- ;;
-
- sysv4*MP*)
- if test -d /usr/nec; then
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- runpath_var=LD_RUN_PATH
- hardcode_runpath_var=yes
- _LT_TAGVAR(ld_shlibs, $1)=yes
- fi
- ;;
-
- sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
- _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- runpath_var='LD_RUN_PATH'
-
- if test "$GCC" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- else
- _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- fi
- ;;
-
- sysv5* | sco3.2v5* | sco5v6*)
- # Note: We can NOT use -z defs as we might desire, because we do not
- # link with -lc, and that would cause any symbols used from libc to
- # always be unresolved, which means just about no library would
- # ever link correctly. If we're not using GNU ld we use -z text
- # though, which does catch some bad symbols but isn't as heavy-handed
- # as -z defs.
- _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
- _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
- runpath_var='LD_RUN_PATH'
-
- if test "$GCC" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- else
- _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- fi
- ;;
-
- uts4*)
- _LT_TAGVAR(archive_cmds, $1)='$LD -G -h $soname -o $lib $libobjs $deplibs $linker_flags'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
-
- *)
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
-
- if test x$host_vendor = xsni; then
- case $host in
- sysv4 | sysv4.2uw2* | sysv4.3* | sysv5*)
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Blargedynsym'
- ;;
- esac
- fi
- fi
-])
-AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
-test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
-
-_LT_TAGVAR(with_gnu_ld, $1)=$with_gnu_ld
-
-_LT_DECL([], [libext], [0], [Old archive suffix (normally "a")])dnl
-_LT_DECL([], [shrext_cmds], [1], [Shared library suffix (normally ".so")])dnl
-_LT_DECL([], [extract_expsyms_cmds], [2],
- [The commands to extract the exported symbol list from a shared archive])
-
-#
-# Do we need to explicitly link libc?
-#
-case "x$_LT_TAGVAR(archive_cmds_need_lc, $1)" in
-x|xyes)
- # Assume -lc should be added
- _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
-
- if test "$enable_shared" = yes && test "$GCC" = yes; then
- case $_LT_TAGVAR(archive_cmds, $1) in
- *'~'*)
- # FIXME: we may have to deal with multi-command sequences.
- ;;
- '$CC '*)
- # Test whether the compiler implicitly links with -lc since on some
- # systems, -lgcc has to come before -lc. If gcc already passes -lc
- # to ld, don't add -lc before -lgcc.
- AC_CACHE_CHECK([whether -lc should be explicitly linked in],
- [lt_cv_]_LT_TAGVAR(archive_cmds_need_lc, $1),
- [$RM conftest*
- echo "$lt_simple_compile_test_code" > conftest.$ac_ext
-
- if AC_TRY_EVAL(ac_compile) 2>conftest.err; then
- soname=conftest
- lib=conftest
- libobjs=conftest.$ac_objext
- deplibs=
- wl=$_LT_TAGVAR(lt_prog_compiler_wl, $1)
- pic_flag=$_LT_TAGVAR(lt_prog_compiler_pic, $1)
- compiler_flags=-v
- linker_flags=-v
- verstring=
- output_objdir=.
- libname=conftest
- lt_save_allow_undefined_flag=$_LT_TAGVAR(allow_undefined_flag, $1)
- _LT_TAGVAR(allow_undefined_flag, $1)=
- if AC_TRY_EVAL(_LT_TAGVAR(archive_cmds, $1) 2\>\&1 \| $GREP \" -lc \" \>/dev/null 2\>\&1)
- then
- lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=no
- else
- lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)=yes
- fi
- _LT_TAGVAR(allow_undefined_flag, $1)=$lt_save_allow_undefined_flag
- else
- cat conftest.err 1>&5
- fi
- $RM conftest*
- ])
- _LT_TAGVAR(archive_cmds_need_lc, $1)=$lt_cv_[]_LT_TAGVAR(archive_cmds_need_lc, $1)
- ;;
- esac
- fi
- ;;
-esac
-
-_LT_TAGDECL([build_libtool_need_lc], [archive_cmds_need_lc], [0],
- [Whether or not to add -lc for building shared libraries])
-_LT_TAGDECL([allow_libtool_libs_with_static_runtimes],
- [enable_shared_with_static_runtimes], [0],
- [Whether or not to disallow shared libs when runtime libs are static])
-_LT_TAGDECL([], [export_dynamic_flag_spec], [1],
- [Compiler flag to allow reflexive dlopens])
-_LT_TAGDECL([], [whole_archive_flag_spec], [1],
- [Compiler flag to generate shared objects directly from archives])
-_LT_TAGDECL([], [compiler_needs_object], [1],
- [Whether the compiler copes with passing no objects directly])
-_LT_TAGDECL([], [old_archive_from_new_cmds], [2],
- [Create an old-style archive from a shared archive])
-_LT_TAGDECL([], [old_archive_from_expsyms_cmds], [2],
- [Create a temporary old-style archive to link instead of a shared archive])
-_LT_TAGDECL([], [archive_cmds], [2], [Commands used to build a shared archive])
-_LT_TAGDECL([], [archive_expsym_cmds], [2])
-_LT_TAGDECL([], [module_cmds], [2],
- [Commands used to build a loadable module if different from building
- a shared archive.])
-_LT_TAGDECL([], [module_expsym_cmds], [2])
-_LT_TAGDECL([], [with_gnu_ld], [1],
- [Whether we are building with GNU ld or not])
-_LT_TAGDECL([], [allow_undefined_flag], [1],
- [Flag that allows shared libraries with undefined symbols to be built])
-_LT_TAGDECL([], [no_undefined_flag], [1],
- [Flag that enforces no undefined symbols])
-_LT_TAGDECL([], [hardcode_libdir_flag_spec], [1],
- [Flag to hardcode $libdir into a binary during linking.
- This must work even if $libdir does not exist])
-_LT_TAGDECL([], [hardcode_libdir_separator], [1],
- [Whether we need a single "-rpath" flag with a separated argument])
-_LT_TAGDECL([], [hardcode_direct], [0],
- [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
- DIR into the resulting binary])
-_LT_TAGDECL([], [hardcode_direct_absolute], [0],
- [Set to "yes" if using DIR/libNAME${shared_ext} during linking hardcodes
- DIR into the resulting binary and the resulting library dependency is
- "absolute", i.e impossible to change by setting ${shlibpath_var} if the
- library is relocated])
-_LT_TAGDECL([], [hardcode_minus_L], [0],
- [Set to "yes" if using the -LDIR flag during linking hardcodes DIR
- into the resulting binary])
-_LT_TAGDECL([], [hardcode_shlibpath_var], [0],
- [Set to "yes" if using SHLIBPATH_VAR=DIR during linking hardcodes DIR
- into the resulting binary])
-_LT_TAGDECL([], [hardcode_automatic], [0],
- [Set to "yes" if building a shared library automatically hardcodes DIR
- into the library and all subsequent libraries and executables linked
- against it])
-_LT_TAGDECL([], [inherit_rpath], [0],
- [Set to yes if linker adds runtime paths of dependent libraries
- to runtime path list])
-_LT_TAGDECL([], [link_all_deplibs], [0],
- [Whether libtool must link a program against all its dependency libraries])
-_LT_TAGDECL([], [always_export_symbols], [0],
- [Set to "yes" if exported symbols are required])
-_LT_TAGDECL([], [export_symbols_cmds], [2],
- [The commands to list exported symbols])
-_LT_TAGDECL([], [exclude_expsyms], [1],
- [Symbols that should not be listed in the preloaded symbols])
-_LT_TAGDECL([], [include_expsyms], [1],
- [Symbols that must always be exported])
-_LT_TAGDECL([], [prelink_cmds], [2],
- [Commands necessary for linking programs (against libraries) with templates])
-_LT_TAGDECL([], [postlink_cmds], [2],
- [Commands necessary for finishing linking programs])
-_LT_TAGDECL([], [file_list_spec], [1],
- [Specify filename containing input files])
-dnl FIXME: Not yet implemented
-dnl _LT_TAGDECL([], [thread_safe_flag_spec], [1],
-dnl [Compiler flag to generate thread safe objects])
-])# _LT_LINKER_SHLIBS
-
-
-# _LT_LANG_C_CONFIG([TAG])
-# ------------------------
-# Ensure that the configuration variables for a C compiler are suitably
-# defined. These variables are subsequently used by _LT_CONFIG to write
-# the compiler configuration to `libtool'.
-m4_defun([_LT_LANG_C_CONFIG],
-[m4_require([_LT_DECL_EGREP])dnl
-lt_save_CC="$CC"
-AC_LANG_PUSH(C)
-
-# Source file extension for C test sources.
-ac_ext=c
-
-# Object file extension for compiled C test sources.
-objext=o
-_LT_TAGVAR(objext, $1)=$objext
-
-# Code to be used in simple compile tests
-lt_simple_compile_test_code="int some_variable = 0;"
-
-# Code to be used in simple link tests
-lt_simple_link_test_code='int main(){return(0);}'
-
-_LT_TAG_COMPILER
-# Save the default compiler, since it gets overwritten when the other
-# tags are being tested, and _LT_TAGVAR(compiler, []) is a NOP.
-compiler_DEFAULT=$CC
-
-# save warnings/boilerplate of simple test code
-_LT_COMPILER_BOILERPLATE
-_LT_LINKER_BOILERPLATE
-
-## CAVEAT EMPTOR:
-## There is no encapsulation within the following macros, do not change
-## the running order or otherwise move them around unless you know exactly
-## what you are doing...
-if test -n "$compiler"; then
- _LT_COMPILER_NO_RTTI($1)
- _LT_COMPILER_PIC($1)
- _LT_COMPILER_C_O($1)
- _LT_COMPILER_FILE_LOCKS($1)
- _LT_LINKER_SHLIBS($1)
- _LT_SYS_DYNAMIC_LINKER($1)
- _LT_LINKER_HARDCODE_LIBPATH($1)
- LT_SYS_DLOPEN_SELF
- _LT_CMD_STRIPLIB
-
- # Report which library types will actually be built
- AC_MSG_CHECKING([if libtool supports shared libraries])
- AC_MSG_RESULT([$can_build_shared])
-
- AC_MSG_CHECKING([whether to build shared libraries])
- test "$can_build_shared" = "no" && enable_shared=no
-
- # On AIX, shared libraries and static libraries use the same namespace, and
- # are all built from PIC.
- case $host_os in
- aix3*)
- test "$enable_shared" = yes && enable_static=no
- if test -n "$RANLIB"; then
- archive_cmds="$archive_cmds~\$RANLIB \$lib"
- postinstall_cmds='$RANLIB $lib'
- fi
- ;;
-
- aix[[4-9]]*)
- if test "$host_cpu" != ia64 && test "$aix_use_runtimelinking" = no ; then
- test "$enable_shared" = yes && enable_static=no
- fi
- ;;
- esac
- AC_MSG_RESULT([$enable_shared])
-
- AC_MSG_CHECKING([whether to build static libraries])
- # Make sure either enable_shared or enable_static is yes.
- test "$enable_shared" = yes || enable_static=yes
- AC_MSG_RESULT([$enable_static])
-
- _LT_CONFIG($1)
-fi
-AC_LANG_POP
-CC="$lt_save_CC"
-])# _LT_LANG_C_CONFIG
-
-
-# _LT_LANG_CXX_CONFIG([TAG])
-# --------------------------
-# Ensure that the configuration variables for a C++ compiler are suitably
-# defined. These variables are subsequently used by _LT_CONFIG to write
-# the compiler configuration to `libtool'.
-m4_defun([_LT_LANG_CXX_CONFIG],
-[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-m4_require([_LT_DECL_EGREP])dnl
-m4_require([_LT_PATH_MANIFEST_TOOL])dnl
-if test -n "$CXX" && ( test "X$CXX" != "Xno" &&
- ( (test "X$CXX" = "Xg++" && `g++ -v >/dev/null 2>&1` ) ||
- (test "X$CXX" != "Xg++"))) ; then
- AC_PROG_CXXCPP
-else
- _lt_caught_CXX_error=yes
-fi
-
-AC_LANG_PUSH(C++)
-_LT_TAGVAR(archive_cmds_need_lc, $1)=no
-_LT_TAGVAR(allow_undefined_flag, $1)=
-_LT_TAGVAR(always_export_symbols, $1)=no
-_LT_TAGVAR(archive_expsym_cmds, $1)=
-_LT_TAGVAR(compiler_needs_object, $1)=no
-_LT_TAGVAR(export_dynamic_flag_spec, $1)=
-_LT_TAGVAR(hardcode_direct, $1)=no
-_LT_TAGVAR(hardcode_direct_absolute, $1)=no
-_LT_TAGVAR(hardcode_libdir_flag_spec, $1)=
-_LT_TAGVAR(hardcode_libdir_separator, $1)=
-_LT_TAGVAR(hardcode_minus_L, $1)=no
-_LT_TAGVAR(hardcode_shlibpath_var, $1)=unsupported
-_LT_TAGVAR(hardcode_automatic, $1)=no
-_LT_TAGVAR(inherit_rpath, $1)=no
-_LT_TAGVAR(module_cmds, $1)=
-_LT_TAGVAR(module_expsym_cmds, $1)=
-_LT_TAGVAR(link_all_deplibs, $1)=unknown
-_LT_TAGVAR(old_archive_cmds, $1)=$old_archive_cmds
-_LT_TAGVAR(reload_flag, $1)=$reload_flag
-_LT_TAGVAR(reload_cmds, $1)=$reload_cmds
-_LT_TAGVAR(no_undefined_flag, $1)=
-_LT_TAGVAR(whole_archive_flag_spec, $1)=
-_LT_TAGVAR(enable_shared_with_static_runtimes, $1)=no
-
-# Source file extension for C++ test sources.
-ac_ext=cpp
-
-# Object file extension for compiled C++ test sources.
-objext=o
-_LT_TAGVAR(objext, $1)=$objext
-
-# No sense in running all these tests if we already determined that
-# the CXX compiler isn't working. Some variables (like enable_shared)
-# are currently assumed to apply to all compilers on this platform,
-# and will be corrupted by setting them based on a non-working compiler.
-if test "$_lt_caught_CXX_error" != yes; then
- # Code to be used in simple compile tests
- lt_simple_compile_test_code="int some_variable = 0;"
-
- # Code to be used in simple link tests
- lt_simple_link_test_code='int main(int, char *[[]]) { return(0); }'
-
- # ltmain only uses $CC for tagged configurations so make sure $CC is set.
- _LT_TAG_COMPILER
-
- # save warnings/boilerplate of simple test code
- _LT_COMPILER_BOILERPLATE
- _LT_LINKER_BOILERPLATE
-
- # Allow CC to be a program name with arguments.
- lt_save_CC=$CC
- lt_save_CFLAGS=$CFLAGS
- lt_save_LD=$LD
- lt_save_GCC=$GCC
- GCC=$GXX
- lt_save_with_gnu_ld=$with_gnu_ld
- lt_save_path_LD=$lt_cv_path_LD
- if test -n "${lt_cv_prog_gnu_ldcxx+set}"; then
- lt_cv_prog_gnu_ld=$lt_cv_prog_gnu_ldcxx
- else
- $as_unset lt_cv_prog_gnu_ld
- fi
- if test -n "${lt_cv_path_LDCXX+set}"; then
- lt_cv_path_LD=$lt_cv_path_LDCXX
- else
- $as_unset lt_cv_path_LD
- fi
- test -z "${LDCXX+set}" || LD=$LDCXX
- CC=${CXX-"c++"}
- CFLAGS=$CXXFLAGS
- compiler=$CC
- _LT_TAGVAR(compiler, $1)=$CC
- _LT_CC_BASENAME([$compiler])
-
- if test -n "$compiler"; then
- # We don't want -fno-exception when compiling C++ code, so set the
- # no_builtin_flag separately
- if test "$GXX" = yes; then
- _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=' -fno-builtin'
- else
- _LT_TAGVAR(lt_prog_compiler_no_builtin_flag, $1)=
- fi
-
- if test "$GXX" = yes; then
- # Set up default GNU C++ configuration
-
- LT_PATH_LD
-
- # Check if GNU C++ uses GNU ld as the underlying linker, since the
- # archiving commands below assume that GNU ld is being used.
- if test "$with_gnu_ld" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC $pic_flag -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
-
- # If archive_cmds runs LD, not CC, wlarc should be empty
- # XXX I think wlarc can be eliminated in ltcf-cxx, but I need to
- # investigate it a little bit more. (MM)
- wlarc='${wl}'
-
- # ancient GNU ld didn't support --whole-archive et. al.
- if eval "`$CC -print-prog-name=ld` --help 2>&1" |
- $GREP 'no-whole-archive' > /dev/null; then
- _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
- else
- _LT_TAGVAR(whole_archive_flag_spec, $1)=
- fi
- else
- with_gnu_ld=no
- wlarc=
-
- # A generic and very simple default shared library creation
- # command for GNU C++ for the case where it uses the native
- # linker, instead of GNU ld. If possible, this setting should
- # overridden to take advantage of the native linker features on
- # the platform it is being used on.
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
- fi
-
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
-
- else
- GXX=no
- with_gnu_ld=no
- wlarc=
- fi
-
- # PORTME: fill in a description of your system's C++ link characteristics
- AC_MSG_CHECKING([whether the $compiler linker ($LD) supports shared libraries])
- _LT_TAGVAR(ld_shlibs, $1)=yes
- case $host_os in
- aix3*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- aix[[4-9]]*)
- if test "$host_cpu" = ia64; then
- # On IA64, the linker does run time linking by default, so we don't
- # have to do anything special.
- aix_use_runtimelinking=no
- exp_sym_flag='-Bexport'
- no_entry_flag=""
- else
- aix_use_runtimelinking=no
-
- # Test if we are trying to use run time linking or normal
- # AIX style linking. If -brtl is somewhere in LDFLAGS, we
- # need to do runtime linking.
- case $host_os in aix4.[[23]]|aix4.[[23]].*|aix[[5-9]]*)
- for ld_flag in $LDFLAGS; do
- case $ld_flag in
- *-brtl*)
- aix_use_runtimelinking=yes
- break
- ;;
- esac
- done
- ;;
- esac
-
- exp_sym_flag='-bexport'
- no_entry_flag='-bnoentry'
- fi
-
- # When large executables or shared objects are built, AIX ld can
- # have problems creating the table of contents. If linking a library
- # or program results in "error TOC overflow" add -mminimal-toc to
- # CXXFLAGS/CFLAGS for g++/gcc. In the cases where that is not
- # enough to fix the problem, add -Wl,-bbigtoc to LDFLAGS.
-
- _LT_TAGVAR(archive_cmds, $1)=''
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- _LT_TAGVAR(file_list_spec, $1)='${wl}-f,'
-
- if test "$GXX" = yes; then
- case $host_os in aix4.[[012]]|aix4.[[012]].*)
- # We only want to do this on AIX 4.2 and lower, the check
- # below for broken collect2 doesn't work under 4.3+
- collect2name=`${CC} -print-prog-name=collect2`
- if test -f "$collect2name" &&
- strings "$collect2name" | $GREP resolve_lib_name >/dev/null
- then
- # We have reworked collect2
- :
- else
- # We have old collect2
- _LT_TAGVAR(hardcode_direct, $1)=unsupported
- # It fails to find uninstalled libraries when the uninstalled
- # path is not listed in the libpath. Setting hardcode_minus_L
- # to unsupported forces relinking
- _LT_TAGVAR(hardcode_minus_L, $1)=yes
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=
- fi
- esac
- shared_flag='-shared'
- if test "$aix_use_runtimelinking" = yes; then
- shared_flag="$shared_flag "'${wl}-G'
- fi
- else
- # not using gcc
- if test "$host_cpu" = ia64; then
- # VisualAge C++, Version 5.5 for AIX 5L for IA-64, Beta 3 Release
- # chokes on -Wl,-G. The following line is correct:
- shared_flag='-G'
- else
- if test "$aix_use_runtimelinking" = yes; then
- shared_flag='${wl}-G'
- else
- shared_flag='${wl}-bM:SRE'
- fi
- fi
- fi
-
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-bexpall'
- # It seems that -bexpall does not export symbols beginning with
- # underscore (_), so it is better to generate a list of symbols to
- # export.
- _LT_TAGVAR(always_export_symbols, $1)=yes
- if test "$aix_use_runtimelinking" = yes; then
- # Warning - without using the other runtime loading flags (-brtl),
- # -berok will link without error, but may produce a broken library.
- _LT_TAGVAR(allow_undefined_flag, $1)='-berok'
- # Determine the default libpath from the value encoded in an empty
- # executable.
- _LT_SYS_MODULE_PATH_AIX([$1])
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
-
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags `if test "x${allow_undefined_flag}" != "x"; then func_echo_all "${wl}${allow_undefined_flag}"; else :; fi` '"\${wl}$exp_sym_flag:\$export_symbols $shared_flag"
- else
- if test "$host_cpu" = ia64; then
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $libdir:/usr/lib:/lib'
- _LT_TAGVAR(allow_undefined_flag, $1)="-z nodefs"
- _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs '"\${wl}$no_entry_flag"' $compiler_flags ${wl}${allow_undefined_flag} '"\${wl}$exp_sym_flag:\$export_symbols"
- else
- # Determine the default libpath from the value encoded in an
- # empty executable.
- _LT_SYS_MODULE_PATH_AIX([$1])
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-blibpath:$libdir:'"$aix_libpath"
- # Warning - without using the other run time loading flags,
- # -berok will link without error, but may produce a broken library.
- _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-bernotok'
- _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-berok'
- if test "$with_gnu_ld" = yes; then
- # We only use this code for GNU lds that support --whole-archive.
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
- else
- # Exported symbols can be pulled into shared objects from archives
- _LT_TAGVAR(whole_archive_flag_spec, $1)='$convenience'
- fi
- _LT_TAGVAR(archive_cmds_need_lc, $1)=yes
- # This is similar to how AIX traditionally builds its shared
- # libraries.
- _LT_TAGVAR(archive_expsym_cmds, $1)="\$CC $shared_flag"' -o $output_objdir/$soname $libobjs $deplibs ${wl}-bnoentry $compiler_flags ${wl}-bE:$export_symbols${allow_undefined_flag}~$AR $AR_FLAGS $output_objdir/$libname$release.a $output_objdir/$soname'
- fi
- fi
- ;;
-
- beos*)
- if $LD --help 2>&1 | $GREP ': supported targets:.* elf' > /dev/null; then
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- # Joseph Beckenbach <jrb3@best.com> says some releases of gcc
- # support --undefined. This deserves some investigation. FIXME
- _LT_TAGVAR(archive_cmds, $1)='$CC -nostart $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- chorus*)
- case $cc_basename in
- *)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
- ;;
-
- cygwin* | mingw* | pw32* | cegcc*)
- case $GXX,$cc_basename in
- ,cl* | no,cl*)
- # Native MSVC
- # hardcode_libdir_flag_spec is actually meaningless, as there is
- # no search path for DLLs.
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)=' '
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(always_export_symbols, $1)=yes
- _LT_TAGVAR(file_list_spec, $1)='@'
- # Tell ltmain to make .lib files, not .a files.
- libext=lib
- # Tell ltmain to make .dll files, not .so files.
- shrext_cmds=".dll"
- # FIXME: Setting linknames here is a bad hack.
- _LT_TAGVAR(archive_cmds, $1)='$CC -o $output_objdir/$soname $libobjs $compiler_flags $deplibs -Wl,-dll~linknames='
- _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
- $SED -n -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' -e '1\\\!p' < $export_symbols > $output_objdir/$soname.exp;
- else
- $SED -e 's/\\\\\\\(.*\\\\\\\)/-link\\\ -EXPORT:\\\\\\\1/' < $export_symbols > $output_objdir/$soname.exp;
- fi~
- $CC -o $tool_output_objdir$soname $libobjs $compiler_flags $deplibs "@$tool_output_objdir$soname.exp" -Wl,-DLL,-IMPLIB:"$tool_output_objdir$libname.dll.lib"~
- linknames='
- # The linker will not automatically build a static lib if we build a DLL.
- # _LT_TAGVAR(old_archive_from_new_cmds, $1)='true'
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
- # Don't use ranlib
- _LT_TAGVAR(old_postinstall_cmds, $1)='chmod 644 $oldlib'
- _LT_TAGVAR(postlink_cmds, $1)='lt_outputfile="@OUTPUT@"~
- lt_tool_outputfile="@TOOL_OUTPUT@"~
- case $lt_outputfile in
- *.exe|*.EXE) ;;
- *)
- lt_outputfile="$lt_outputfile.exe"
- lt_tool_outputfile="$lt_tool_outputfile.exe"
- ;;
- esac~
- func_to_tool_file "$lt_outputfile"~
- if test "$MANIFEST_TOOL" != ":" && test -f "$lt_outputfile.manifest"; then
- $MANIFEST_TOOL -manifest "$lt_tool_outputfile.manifest" -outputresource:"$lt_tool_outputfile" || exit 1;
- $RM "$lt_outputfile.manifest";
- fi'
- ;;
- *)
- # g++
- # _LT_TAGVAR(hardcode_libdir_flag_spec, $1) is actually meaningless,
- # as there is no search path for DLLs.
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-L$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-all-symbols'
- _LT_TAGVAR(allow_undefined_flag, $1)=unsupported
- _LT_TAGVAR(always_export_symbols, $1)=no
- _LT_TAGVAR(enable_shared_with_static_runtimes, $1)=yes
-
- if $LD --help 2>&1 | $GREP 'auto-import' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
- # If the export-symbols file already is a .def file (1st line
- # is EXPORTS), use it as is; otherwise, prepend...
- _LT_TAGVAR(archive_expsym_cmds, $1)='if test "x`$SED 1q $export_symbols`" = xEXPORTS; then
- cp $export_symbols $output_objdir/$soname.def;
- else
- echo EXPORTS > $output_objdir/$soname.def;
- cat $export_symbols >> $output_objdir/$soname.def;
- fi~
- $CC -shared -nostdlib $output_objdir/$soname.def $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $output_objdir/$soname ${wl}--enable-auto-image-base -Xlinker --out-implib -Xlinker $lib'
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
- esac
- ;;
- darwin* | rhapsody*)
- _LT_DARWIN_LINKER_FEATURES($1)
- ;;
-
- dgux*)
- case $cc_basename in
- ec++*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- ghcx*)
- # Green Hills C++ Compiler
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- *)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
- ;;
-
- freebsd2.*)
- # C++ shared libraries reported to be fairly broken before
- # switch to ELF
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
- freebsd-elf*)
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- ;;
-
- freebsd* | dragonfly*)
- # FreeBSD 3 and later use GNU C++ and GNU ld with standard ELF
- # conventions
- _LT_TAGVAR(ld_shlibs, $1)=yes
- ;;
-
- gnu*)
- ;;
-
- haiku*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- ;;
-
- hpux9*)
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
- # but as the default
- # location of the library.
-
- case $cc_basename in
- CC*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- aCC*)
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -b ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- #
- # There doesn't appear to be a way to prevent this compiler from
- # explicitly linking system object files so we need to strip them
- # from the output so that they don't get included in the library
- # dependencies.
- output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $EGREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
- ;;
- *)
- if test "$GXX" = yes; then
- _LT_TAGVAR(archive_cmds, $1)='$RM $output_objdir/$soname~$CC -shared -nostdlib $pic_flag ${wl}+b ${wl}$install_libdir -o $output_objdir/$soname $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~test $output_objdir/$soname = $lib || mv $output_objdir/$soname $lib'
- else
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
- esac
- ;;
-
- hpux10*|hpux11*)
- if test $with_gnu_ld = no; then
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}+b ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
-
- case $host_cpu in
- hppa*64*|ia64*)
- ;;
- *)
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- ;;
- esac
- fi
- case $host_cpu in
- hppa*64*|ia64*)
- _LT_TAGVAR(hardcode_direct, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- ;;
- *)
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- _LT_TAGVAR(hardcode_minus_L, $1)=yes # Not in the search PATH,
- # but as the default
- # location of the library.
- ;;
- esac
-
- case $cc_basename in
- CC*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- aCC*)
- case $host_cpu in
- hppa*64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- ;;
- ia64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -b ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- ;;
- esac
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- #
- # There doesn't appear to be a way to prevent this compiler from
- # explicitly linking system object files so we need to strip them
- # from the output so that they don't get included in the library
- # dependencies.
- output_verbose_link_cmd='templist=`($CC -b $CFLAGS -v conftest.$objext 2>&1) | $GREP "\-L"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
- ;;
- *)
- if test "$GXX" = yes; then
- if test $with_gnu_ld = no; then
- case $host_cpu in
- hppa*64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib -fPIC ${wl}+h ${wl}$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- ;;
- ia64*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag ${wl}+h ${wl}$soname ${wl}+nodefaultrpath -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib $pic_flag ${wl}+h ${wl}$soname ${wl}+b ${wl}$install_libdir -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- ;;
- esac
- fi
- else
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
- esac
- ;;
-
- interix[[3-9]]*)
- _LT_TAGVAR(hardcode_direct, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- # Hack: On Interix 3.x, we cannot compile PIC because of a broken gcc.
- # Instead, shared libraries are loaded at an image base (0x10000000 by
- # default) and relocated if they conflict, which is a slow very memory
- # consuming and fragmenting process. To avoid this, we pick a random,
- # 256 KiB-aligned image base between 0x50000000 and 0x6FFC0000 at link
- # time. Moving up from 0x10000000 also allows more sbrk(2) space.
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='sed "s,^,_," $export_symbols >$output_objdir/$soname.expsym~$CC -shared $pic_flag $libobjs $deplibs $compiler_flags ${wl}-h,$soname ${wl}--retain-symbols-file,$output_objdir/$soname.expsym ${wl}--image-base,`expr ${RANDOM-$$} % 4096 / 2 \* 262144 + 1342177280` -o $lib'
- ;;
- irix5* | irix6*)
- case $cc_basename in
- CC*)
- # SGI C++
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -all -multigot $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
-
- # Archives containing C++ object files must be created using
- # "CC -ar", where "CC" is the IRIX C++ compiler. This is
- # necessary to make sure instantiated templates are included
- # in the archive.
- _LT_TAGVAR(old_archive_cmds, $1)='$CC -ar -WR,-u -o $oldlib $oldobjs'
- ;;
- *)
- if test "$GXX" = yes; then
- if test "$with_gnu_ld" = no; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- else
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` -o $lib'
- fi
- fi
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- ;;
- esac
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
- _LT_TAGVAR(inherit_rpath, $1)=yes
- ;;
-
- linux* | k*bsd*-gnu | kopensolaris*-gnu)
- case $cc_basename in
- KCC*)
- # Kuck and Associates, Inc. (KAI) C++ Compiler
-
- # KCC will only create a shared library if the output file
- # ends with ".so" (or ".sl" for HP-UX), so rename the library
- # to its proper name (with version) after linking.
- _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo $lib | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib ${wl}-retain-symbols-file,$export_symbols; mv \$templib $lib'
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- #
- # There doesn't appear to be a way to prevent this compiler from
- # explicitly linking system object files so we need to strip them
- # from the output so that they don't get included in the library
- # dependencies.
- output_verbose_link_cmd='templist=`$CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1 | $GREP "ld"`; rm -f libconftest$shared_ext; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
-
- # Archives containing C++ object files must be created using
- # "CC -Bstatic", where "CC" is the KAI C++ compiler.
- _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs'
- ;;
- icpc* | ecpc* )
- # Intel C++
- with_gnu_ld=yes
- # version 8.0 and above of icpc choke on multiply defined symbols
- # if we add $predep_objects and $postdep_objects, however 7.1 and
- # earlier do not add the objects themselves.
- case `$CC -V 2>&1` in
- *"Version 7."*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
- ;;
- *) # Version 8.0 or newer
- tmp_idyn=
- case $host_cpu in
- ia64*) tmp_idyn=' -i_dynamic';;
- esac
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared'"$tmp_idyn"' $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-retain-symbols-file $wl$export_symbols -o $lib'
- ;;
- esac
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive$convenience ${wl}--no-whole-archive'
- ;;
- pgCC* | pgcpp*)
- # Portland Group C++ compiler
- case `$CC -V` in
- *pgCC\ [[1-5]].* | *pgcpp\ [[1-5]].*)
- _LT_TAGVAR(prelink_cmds, $1)='tpldir=Template.dir~
- rm -rf $tpldir~
- $CC --prelink_objects --instantiation_dir $tpldir $objs $libobjs $compile_deplibs~
- compile_command="$compile_command `find $tpldir -name \*.o | sort | $NL2SP`"'
- _LT_TAGVAR(old_archive_cmds, $1)='tpldir=Template.dir~
- rm -rf $tpldir~
- $CC --prelink_objects --instantiation_dir $tpldir $oldobjs$old_deplibs~
- $AR $AR_FLAGS $oldlib$oldobjs$old_deplibs `find $tpldir -name \*.o | sort | $NL2SP`~
- $RANLIB $oldlib'
- _LT_TAGVAR(archive_cmds, $1)='tpldir=Template.dir~
- rm -rf $tpldir~
- $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
- $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='tpldir=Template.dir~
- rm -rf $tpldir~
- $CC --prelink_objects --instantiation_dir $tpldir $predep_objects $libobjs $deplibs $convenience $postdep_objects~
- $CC -shared $pic_flag $predep_objects $libobjs $deplibs `find $tpldir -name \*.o | sort | $NL2SP` $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
- ;;
- *) # Version 6 and above use weak symbols
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname ${wl}-retain-symbols-file ${wl}$export_symbols -o $lib'
- ;;
- esac
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}--rpath ${wl}$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`for conv in $convenience\"\"; do test -n \"$conv\" && new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
- ;;
- cxx*)
- # Compaq C++
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $wl$soname -o $lib ${wl}-retain-symbols-file $wl$export_symbols'
-
- runpath_var=LD_RUN_PATH
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
-
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- #
- # There doesn't appear to be a way to prevent this compiler from
- # explicitly linking system object files so we need to strip them
- # from the output so that they don't get included in the library
- # dependencies.
- output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld .*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "X$list" | $Xsed'
- ;;
- xl* | mpixl* | bgxl*)
- # IBM XL 8.0 on PPC, with GNU ld
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}--export-dynamic'
- _LT_TAGVAR(archive_cmds, $1)='$CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname -o $lib'
- if test "x$supports_anon_versioning" = xyes; then
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $output_objdir/$libname.ver~
- cat $export_symbols | sed -e "s/\(.*\)/\1;/" >> $output_objdir/$libname.ver~
- echo "local: *; };" >> $output_objdir/$libname.ver~
- $CC -qmkshrobj $libobjs $deplibs $compiler_flags ${wl}-soname $wl$soname ${wl}-version-script ${wl}$output_objdir/$libname.ver -o $lib'
- fi
- ;;
- *)
- case `$CC -V 2>&1 | sed 5q` in
- *Sun\ C*)
- # Sun C++ 5.9
- _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
- _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file ${wl}$export_symbols'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}--whole-archive`new_convenience=; for conv in $convenience\"\"; do test -z \"$conv\" || new_convenience=\"$new_convenience,$conv\"; done; func_echo_all \"$new_convenience\"` ${wl}--no-whole-archive'
- _LT_TAGVAR(compiler_needs_object, $1)=yes
-
- # Not sure whether something based on
- # $CC $CFLAGS -v conftest.$objext -o libconftest$shared_ext 2>&1
- # would be better.
- output_verbose_link_cmd='func_echo_all'
-
- # Archives containing C++ object files must be created using
- # "CC -xar", where "CC" is the Sun C++ compiler. This is
- # necessary to make sure instantiated templates are included
- # in the archive.
- _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
- ;;
- esac
- ;;
- esac
- ;;
-
- lynxos*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
- m88k*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
- mvs*)
- case $cc_basename in
- cxx*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- *)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
- ;;
-
- netbsd*)
- if echo __ELF__ | $CC -E - | $GREP __ELF__ >/dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$LD -Bshareable -o $lib $predep_objects $libobjs $deplibs $postdep_objects $linker_flags'
- wlarc=
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- fi
- # Workaround some broken pre-1.5 toolchains
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP conftest.$objext | $SED -e "s:-lgcc -lc -lgcc::"'
- ;;
-
- *nto* | *qnx*)
- _LT_TAGVAR(ld_shlibs, $1)=yes
- ;;
-
- openbsd2*)
- # C++ shared libraries are fairly broken
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
- openbsd*)
- if test -f /usr/libexec/ld.so; then
- _LT_TAGVAR(hardcode_direct, $1)=yes
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(hardcode_direct_absolute, $1)=yes
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -o $lib'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- if test -z "`echo __ELF__ | $CC -E - | grep __ELF__`" || test "$host_os-$host_cpu" = "openbsd2.8-powerpc"; then
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared $pic_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-retain-symbols-file,$export_symbols -o $lib'
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-E'
- _LT_TAGVAR(whole_archive_flag_spec, $1)="$wlarc"'--whole-archive$convenience '"$wlarc"'--no-whole-archive'
- fi
- output_verbose_link_cmd=func_echo_all
- else
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
-
- osf3* | osf4* | osf5*)
- case $cc_basename in
- KCC*)
- # Kuck and Associates, Inc. (KAI) C++ Compiler
-
- # KCC will only create a shared library if the output file
- # ends with ".so" (or ".sl" for HP-UX), so rename the library
- # to its proper name (with version) after linking.
- _LT_TAGVAR(archive_cmds, $1)='tempext=`echo $shared_ext | $SED -e '\''s/\([[^()0-9A-Za-z{}]]\)/\\\\\1/g'\''`; templib=`echo "$lib" | $SED -e "s/\${tempext}\..*/.so/"`; $CC $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags --soname $soname -o \$templib; mv \$templib $lib'
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath,$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
-
- # Archives containing C++ object files must be created using
- # the KAI C++ compiler.
- case $host in
- osf3*) _LT_TAGVAR(old_archive_cmds, $1)='$CC -Bstatic -o $oldlib $oldobjs' ;;
- *) _LT_TAGVAR(old_archive_cmds, $1)='$CC -o $oldlib $oldobjs' ;;
- esac
- ;;
- RCC*)
- # Rational C++ 2.4.1
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- cxx*)
- case $host in
- osf3*)
- _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname $soname `test -n "$verstring" && func_echo_all "${wl}-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- ;;
- *)
- _LT_TAGVAR(allow_undefined_flag, $1)=' -expect_unresolved \*'
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname `test -n "$verstring" && func_echo_all "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='for i in `cat $export_symbols`; do printf "%s %s\\n" -exported_symbol "\$i" >> $lib.exp; done~
- echo "-hidden">> $lib.exp~
- $CC -shared$allow_undefined_flag $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags -msym -soname $soname ${wl}-input ${wl}$lib.exp `test -n "$verstring" && $ECHO "-set_version $verstring"` -update_registry ${output_objdir}/so_locations -o $lib~
- $RM $lib.exp'
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-rpath $libdir'
- ;;
- esac
-
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
-
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- #
- # There doesn't appear to be a way to prevent this compiler from
- # explicitly linking system object files so we need to strip them
- # from the output so that they don't get included in the library
- # dependencies.
- output_verbose_link_cmd='templist=`$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP "ld" | $GREP -v "ld:"`; templist=`func_echo_all "$templist" | $SED "s/\(^.*ld.*\)\( .*ld.*$\)/\1/"`; list=""; for z in $templist; do case $z in conftest.$objext) list="$list $z";; *.$objext);; *) list="$list $z";;esac; done; func_echo_all "$list"'
- ;;
- *)
- if test "$GXX" = yes && test "$with_gnu_ld" = no; then
- _LT_TAGVAR(allow_undefined_flag, $1)=' ${wl}-expect_unresolved ${wl}\*'
- case $host in
- osf3*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib ${allow_undefined_flag} $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-msym ${wl}-soname ${wl}$soname `test -n "$verstring" && func_echo_all "${wl}-set_version ${wl}$verstring"` ${wl}-update_registry ${wl}${output_objdir}/so_locations -o $lib'
- ;;
- esac
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-rpath ${wl}$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=:
-
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
-
- else
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- fi
- ;;
- esac
- ;;
-
- psos*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
- sunos4*)
- case $cc_basename in
- CC*)
- # Sun C++ 4.x
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- lcc*)
- # Lucid
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- *)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
- ;;
-
- solaris*)
- case $cc_basename in
- CC* | sunCC*)
- # Sun C++ 4.2, 5.x and Centerline C++
- _LT_TAGVAR(archive_cmds_need_lc,$1)=yes
- _LT_TAGVAR(no_undefined_flag, $1)=' -zdefs'
- _LT_TAGVAR(archive_cmds, $1)='$CC -G${allow_undefined_flag} -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -G${allow_undefined_flag} ${wl}-M ${wl}$lib.exp -h$soname -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='-R$libdir'
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- case $host_os in
- solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
- *)
- # The compiler driver will combine and reorder linker options,
- # but understands `-z linker_flag'.
- # Supported since Solaris 2.6 (maybe 2.5.1?)
- _LT_TAGVAR(whole_archive_flag_spec, $1)='-z allextract$convenience -z defaultextract'
- ;;
- esac
- _LT_TAGVAR(link_all_deplibs, $1)=yes
-
- output_verbose_link_cmd='func_echo_all'
-
- # Archives containing C++ object files must be created using
- # "CC -xar", where "CC" is the Sun C++ compiler. This is
- # necessary to make sure instantiated templates are included
- # in the archive.
- _LT_TAGVAR(old_archive_cmds, $1)='$CC -xar -o $oldlib $oldobjs'
- ;;
- gcx*)
- # Green Hills C++ Compiler
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
-
- # The C++ compiler must be used to create the archive.
- _LT_TAGVAR(old_archive_cmds, $1)='$CC $LDFLAGS -archive -o $oldlib $oldobjs'
- ;;
- *)
- # GNU C++ compiler with Solaris linker
- if test "$GXX" = yes && test "$with_gnu_ld" = no; then
- _LT_TAGVAR(no_undefined_flag, $1)=' ${wl}-z ${wl}defs'
- if $CC --version | $GREP -v '^2\.7' > /dev/null; then
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared $pic_flag -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -shared $pic_flag -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
-
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- output_verbose_link_cmd='$CC -shared $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
- else
- # g++ 2.7 appears to require `-G' NOT `-shared' on this
- # platform.
- _LT_TAGVAR(archive_cmds, $1)='$CC -G -nostdlib $LDFLAGS $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags ${wl}-h $wl$soname -o $lib'
- _LT_TAGVAR(archive_expsym_cmds, $1)='echo "{ global:" > $lib.exp~cat $export_symbols | $SED -e "s/\(.*\)/\1;/" >> $lib.exp~echo "local: *; };" >> $lib.exp~
- $CC -G -nostdlib ${wl}-M $wl$lib.exp -o $lib $predep_objects $libobjs $deplibs $postdep_objects $compiler_flags~$RM $lib.exp'
-
- # Commands to make compiler produce verbose output that lists
- # what "hidden" libraries, object files and flags are used when
- # linking a shared library.
- output_verbose_link_cmd='$CC -G $CFLAGS -v conftest.$objext 2>&1 | $GREP -v "^Configured with:" | $GREP "\-L"'
- fi
-
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R $wl$libdir'
- case $host_os in
- solaris2.[[0-5]] | solaris2.[[0-5]].*) ;;
- *)
- _LT_TAGVAR(whole_archive_flag_spec, $1)='${wl}-z ${wl}allextract$convenience ${wl}-z ${wl}defaultextract'
- ;;
- esac
- fi
- ;;
- esac
- ;;
-
- sysv4*uw2* | sysv5OpenUNIX* | sysv5UnixWare7.[[01]].[[10]]* | unixware7* | sco3.2v5.0.[[024]]*)
- _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- runpath_var='LD_RUN_PATH'
-
- case $cc_basename in
- CC*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- esac
- ;;
-
- sysv5* | sco3.2v5* | sco5v6*)
- # Note: We can NOT use -z defs as we might desire, because we do not
- # link with -lc, and that would cause any symbols used from libc to
- # always be unresolved, which means just about no library would
- # ever link correctly. If we're not using GNU ld we use -z text
- # though, which does catch some bad symbols but isn't as heavy-handed
- # as -z defs.
- _LT_TAGVAR(no_undefined_flag, $1)='${wl}-z,text'
- _LT_TAGVAR(allow_undefined_flag, $1)='${wl}-z,nodefs'
- _LT_TAGVAR(archive_cmds_need_lc, $1)=no
- _LT_TAGVAR(hardcode_shlibpath_var, $1)=no
- _LT_TAGVAR(hardcode_libdir_flag_spec, $1)='${wl}-R,$libdir'
- _LT_TAGVAR(hardcode_libdir_separator, $1)=':'
- _LT_TAGVAR(link_all_deplibs, $1)=yes
- _LT_TAGVAR(export_dynamic_flag_spec, $1)='${wl}-Bexport'
- runpath_var='LD_RUN_PATH'
-
- case $cc_basename in
- CC*)
- _LT_TAGVAR(archive_cmds, $1)='$CC -G ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -G ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(old_archive_cmds, $1)='$CC -Tprelink_objects $oldobjs~
- '"$_LT_TAGVAR(old_archive_cmds, $1)"
- _LT_TAGVAR(reload_cmds, $1)='$CC -Tprelink_objects $reload_objs~
- '"$_LT_TAGVAR(reload_cmds, $1)"
- ;;
- *)
- _LT_TAGVAR(archive_cmds, $1)='$CC -shared ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- _LT_TAGVAR(archive_expsym_cmds, $1)='$CC -shared ${wl}-Bexport:$export_symbols ${wl}-h,$soname -o $lib $libobjs $deplibs $compiler_flags'
- ;;
- esac
- ;;
-
- tandem*)
- case $cc_basename in
- NCC*)
- # NonStop-UX NCC 3.20
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- *)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
- ;;
-
- vxworks*)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
-
- *)
- # FIXME: insert proper C++ library support
- _LT_TAGVAR(ld_shlibs, $1)=no
- ;;
- esac
-
- AC_MSG_RESULT([$_LT_TAGVAR(ld_shlibs, $1)])
- test "$_LT_TAGVAR(ld_shlibs, $1)" = no && can_build_shared=no
-
- _LT_TAGVAR(GCC, $1)="$GXX"
- _LT_TAGVAR(LD, $1)="$LD"
-
- ## CAVEAT EMPTOR:
- ## There is no encapsulation within the following macros, do not change
- ## the running order or otherwise move them around unless you know exactly
- ## what you are doing...
- _LT_SYS_HIDDEN_LIBDEPS($1)
- _LT_COMPILER_PIC($1)
- _LT_COMPILER_C_O($1)
- _LT_COMPILER_FILE_LOCKS($1)
- _LT_LINKER_SHLIBS($1)
- _LT_SYS_DYNAMIC_LINKER($1)
- _LT_LINKER_HARDCODE_LIBPATH($1)
-
- _LT_CONFIG($1)
- fi # test -n "$compiler"
-
- CC=$lt_save_CC
- CFLAGS=$lt_save_CFLAGS
- LDCXX=$LD
- LD=$lt_save_LD
- GCC=$lt_save_GCC
- with_gnu_ld=$lt_save_with_gnu_ld
- lt_cv_path_LDCXX=$lt_cv_path_LD
- lt_cv_path_LD=$lt_save_path_LD
- lt_cv_prog_gnu_ldcxx=$lt_cv_prog_gnu_ld
- lt_cv_prog_gnu_ld=$lt_save_with_gnu_ld
-fi # test "$_lt_caught_CXX_error" != yes
-
-AC_LANG_POP
-])# _LT_LANG_CXX_CONFIG
-
-
-# _LT_FUNC_STRIPNAME_CNF
-# ----------------------
-# func_stripname_cnf prefix suffix name
-# strip PREFIX and SUFFIX off of NAME.
-# PREFIX and SUFFIX must not contain globbing or regex special
-# characters, hashes, percent signs, but SUFFIX may contain a leading
-# dot (in which case that matches only a dot).
-#
-# This function is identical to the (non-XSI) version of func_stripname,
-# except this one can be used by m4 code that may be executed by configure,
-# rather than the libtool script.
-m4_defun([_LT_FUNC_STRIPNAME_CNF],[dnl
-AC_REQUIRE([_LT_DECL_SED])
-AC_REQUIRE([_LT_PROG_ECHO_BACKSLASH])
-func_stripname_cnf ()
-{
- case ${2} in
- .*) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%\\\\${2}\$%%"`;;
- *) func_stripname_result=`$ECHO "${3}" | $SED "s%^${1}%%; s%${2}\$%%"`;;
- esac
-} # func_stripname_cnf
-])# _LT_FUNC_STRIPNAME_CNF
-
-# _LT_SYS_HIDDEN_LIBDEPS([TAGNAME])
-# ---------------------------------
-# Figure out "hidden" library dependencies from verbose
-# compiler output when linking a shared library.
-# Parse the compiler output and extract the necessary
-# objects, libraries and library flags.
-m4_defun([_LT_SYS_HIDDEN_LIBDEPS],
-[m4_require([_LT_FILEUTILS_DEFAULTS])dnl
-AC_REQUIRE([_LT_FUNC_STRIPNAME_CNF])dnl
-# Dependencies to place before and after the object being linked:
-_LT_TAGVAR(predep_objects, $1)=
-_LT_TAGVAR(postdep_objects, $1)=
-_LT_TAGVAR(predeps, $1)=
-_LT_TAGVAR(postdeps, $1)=
-_LT_TAGVAR(compiler_lib_search_path, $1)=
-
-dnl we can't use the lt_simple_compile_test_code here,
-dnl because it contains code intended for an executable,
-dnl not a library. It's possible we should let each
-dnl tag define a new lt_????_link_test_code variable,
-dnl but it's only used here...
-m4_if([$1], [], [cat > conftest.$ac_ext <<_LT_EOF
-int a;
-void foo (void) { a = 0; }
-_LT_EOF
-], [$1], [CXX], [cat > conftest.$ac_ext <<_LT_EOF
-class Foo
-{
-public:
- Foo (void) { a = 0; }
-private:
- int a;
-};
-_LT_EOF
-], [$1], [F77], [cat > conftest.$ac_ext <<_LT_EOF
- subroutine foo
- implicit none
- integer*4 a
- a=0
- return
- end
-_LT_EOF
-], [$1], [FC], [cat > conftest.$ac_ext <<_LT_EOF
- subroutine foo
- implicit none
- integer a
- a=0
- return
- end
-_LT_EOF
-], [$1], [GCJ], [cat > conftest.$ac_ext <<_LT_EOF
-public class foo {
- private int a;
- public void bar (void) {
- a = 0;
- }
-};
-_LT_EOF
-], [$1], [GO], [cat > conftest.$ac_ext <<_LT_EOF
-package foo
-func foo() {
-}
-_LT_EOF
-])
-
-_lt_libdeps_save_CFLAGS=$CFLAGS
-case "$CC $CFLAGS " in #(
-*\ -flto*\ *) CFLAGS="$CFLAGS -fno-lto" ;;
-*\ -fwhopr*\ *) CFLAGS="$CFLAGS -fno-whopr" ;;
-*\ -fuse-linker-plugin*\ *) CFLAGS="$CFLAGS -fno-use-linker-plugin" ;;
-esac
-
-dnl Parse the compiler output and extract the necessary
-dnl objects, libraries and library flags.
-if AC_TRY_EVAL(ac_compile); then
- # Parse the compiler output and extract the necessary
- # objects, libraries and library flags.
-
- # Sentinel used to keep track of whether or not we are before
- # the conftest object file.
- pre_test_object_deps_done=no
-
- for p in `eval "$output_verbose_link_cmd"`; do
- case ${prev}${p} in
-
- -L* | -R* | -l*)
- # Some compilers place space between "-{L,R}" and the path.
- # Remove the space.
- if test $p = "-L" ||
- test $p = "-R"; then
- prev=$p
- continue
- fi
-
- # Expand the sysroot to ease extracting the directories later.
- if test -z "$prev"; then
- case $p in
- -L*) func_stripname_cnf '-L' '' "$p"; prev=-L; p=$func_stripname_result ;;
- -R*) func_stripname_cnf '-R' '' "$p"; prev=-R; p=$func_stripname_result ;;
- -l*) func_stripname_cnf '-l' '' "$p"; prev=-l; p=$func_stripname_result ;;
- esac
- fi
- case $p in
- =*) func_stripname_cnf '=' '' "$p"; p=$lt_sysroot$func_stripname_result ;;
- esac
- if test "$pre_test_object_deps_done" = no; then
- case ${prev} in
- -L | -R)
- # Internal compiler library paths should come after those
- # provided the user. The postdeps already come after the
- # user supplied libs so there is no need to process them.
- if test -z "$_LT_TAGVAR(compiler_lib_search_path, $1)"; then
- _LT_TAGVAR(compiler_lib_search_path, $1)="${prev}${p}"
- else
- _LT_TAGVAR(compiler_lib_search_path, $1)="${_LT_TAGVAR(compiler_lib_search_path, $1)} ${prev}${p}"
- fi
- ;;
- # The "-l" case would never come before the object being
- # linked, so don't bother handling this case.
- esac
- else
- if test -z "$_LT_TAGVAR(postdeps, $1)"; then
- _LT_TAGVAR(postdeps, $1)="${prev}${p}"
- else
- _LT_TAGVAR(postdeps, $1)="${_LT_TAGVAR(postdeps, $1)} ${prev}${p}"
- fi
- fi
- prev=
- ;;
-
- *.lto.$objext) ;; # Ignore GCC LTO objects
- *.$objext)
- # This assumes that the test object file only shows up
- # once in the compiler output.
- if test "$p" = "conftest.$objext"; then
- pre_test_object_deps_done=yes
- continue
- fi
-
- if test "$pre_test_object_deps_done" = no; then
- if test -z "$_LT_TAGVAR(predep_objects, $1)"; then
- _LT_TAGVAR(predep_objects, $1)="$p"
- else
- _LT_TAGVAR(predep_objects, $1)="$_LT_TAGVAR(predep_objects, $1) $p"
- fi
- else
- if test -z "$_LT_TAGVAR(postdep_objects, $1)"; then
- _LT_TAGVAR(postdep_objects, $1)="$p"
- else
- _LT_TAGVAR(postdep_objects, $1)="$_LT_TAGVAR(postdep_objects, $1) $p"
- fi
- fi
- ;;
-
- *) ;; # Ignore the rest.
-
- esac
- done
-
- # Clean up.
- rm -f a.out a.exe
-else
- echo "libtool.m4: error: problem compiling $1 test program"
-fi
-
-$RM -f confest.$objext
-CFLAGS=$_lt_libdeps_save_CFLAGS
-
-# PORTME: override above test on systems where it is broken
-m4_if([$1], [CXX],
-[case $host_os in
-interix[[3-9]]*)
- # Interix 3.5 installs completely hosed .la files for C++, so rather than
- # hack all around it, let's just trust "g++" to DTRT.
- _LT_TAGVAR(predep_objects,$1)=
- _LT_TAGVAR(postdep_objects,$1)=
- _LT_TAGVAR(postdeps,$1)=
- ;;
-
-linux*)
- case `$CC -V 2>&1 | sed 5q` in
- *Sun\ C*)
- # Sun C++ 5.9
-
- # The more standards-conforming stlport4 library is
- # incompatible with the Cstd library. Avoid specifying
- # it if it's in CXXFLAGS. Ignore libCrun as
- # -library=stlport4 depends on it.
- case " $CXX $CXXFLAGS " in
- *" -library=stlport4 "*)
- solaris_use_stlport4=yes
- ;;
- esac
-
- if test "$solaris_use_stlport4" != yes; then
- _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
- fi
- ;;
- esac
- ;;
-
-solaris*)
- case $cc_basename in
- CC* | sunCC*)
- # The more standards-conforming stlport4 library is
- # incompatible with the Cstd library. Avoid specifying
- # it if it's in CXXFLAGS. Ignore libCrun as
- # -library=stlport4 depends on it.
- case " $CXX $CXXFLAGS " in
- *" -library=stlport4 "*)
- solaris_use_stlport4=yes
- ;;
- esac
-
- # Adding this requires a known-good setup of shared libraries for
- # Sun compiler versions before 5.6, else PIC objects from an old
- # archive will be linked into the output, leading to subtle bugs.
- if test "$solaris_use_stlport4" != yes; then
- _LT_TAGVAR(postdeps,$1)='-library=Cstd -library=Crun'
- fi
- ;;
- esac
- ;;
-esac
-])
-
-case " $_LT_TAGVAR(postdeps, $1) " in
-*" -lc "*) _LT_TAGVAR(archive_cmds_need_lc, $1)=no ;;
-esac
- _LT_TAGVAR(compiler_lib_search_dirs, $1)=
-if test -n "${_LT_TAGVAR(compiler_lib_search_path, $1)}"; then
- _LT_TAGVAR(compiler_lib_search_dirs, $1)=`echo " ${_LT_TAGVAR(compiler_lib_search_path, $1)}" | ${SED} -e 's! -L! !g' -e 's!^ !!'`
-fi
-_LT_TAGDECL([], [compiler_lib_search_dirs], [1],
- [The directories searched by this compiler when creating a shared library])
-_LT_TAGDECL([], [predep_objects], [1],
- [Dependencies to place before and after the objects being linked to
- create a shared library])
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-lt_shell_append=no
-( foo=bar; set foo baz; eval "$[1]+=\$[2]" && test "$foo" = barbaz ) \
- >/dev/null 2>&1 \
- && lt_shell_append=yes
-AC_MSG_RESULT([$lt_shell_append])
-_LT_CONFIG_LIBTOOL_INIT([lt_shell_append='$lt_shell_append'])
-
-if ( (MAIL=60; unset MAIL) || exit) >/dev/null 2>&1; then
- lt_unset=unset
-else
- lt_unset=false
-fi
-_LT_DECL([], [lt_unset], [0], [whether the shell understands "unset"])dnl
-
-# test EBCDIC or ASCII
-case `echo X|tr X '\101'` in
- A) # ASCII based system
- # \n is not interpreted correctly by Solaris 8 /usr/ucb/tr
- lt_SP2NL='tr \040 \012'
- lt_NL2SP='tr \015\012 \040\040'
- ;;
- *) # EBCDIC based system
- lt_SP2NL='tr \100 \n'
- lt_NL2SP='tr \r\n \100\100'
- ;;
-esac
-_LT_DECL([SP2NL], [lt_SP2NL], [1], [turn spaces into newlines])dnl
-_LT_DECL([NL2SP], [lt_NL2SP], [1], [turn newlines into spaces])dnl
-])# _LT_CHECK_SHELL_FEATURES
-
-
-# _LT_PROG_FUNCTION_REPLACE (FUNCNAME, REPLACEMENT-BODY)
-# ------------------------------------------------------
-# In `$cfgfile', look for function FUNCNAME delimited by `^FUNCNAME ()$' and
-# '^} FUNCNAME ', and replace its body with REPLACEMENT-BODY.
-m4_defun([_LT_PROG_FUNCTION_REPLACE],
-[dnl {
-sed -e '/^$1 ()$/,/^} # $1 /c\
-$1 ()\
-{\
-m4_bpatsubsts([$2], [$], [\\], [^\([ ]\)], [\\\1])
-} # Extended-shell $1 implementation' "$cfgfile" > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
-test 0 -eq $? || _lt_function_replace_fail=:
-])
-
-
-# _LT_PROG_REPLACE_SHELLFNS
-# -------------------------
-# Replace existing portable implementations of several shell functions with
-# equivalent extended shell implementations where those features are available..
-m4_defun([_LT_PROG_REPLACE_SHELLFNS],
-[if test x"$xsi_shell" = xyes; then
- _LT_PROG_FUNCTION_REPLACE([func_dirname], [dnl
- case ${1} in
- */*) func_dirname_result="${1%/*}${2}" ;;
- * ) func_dirname_result="${3}" ;;
- esac])
-
- _LT_PROG_FUNCTION_REPLACE([func_basename], [dnl
- func_basename_result="${1##*/}"])
-
- _LT_PROG_FUNCTION_REPLACE([func_dirname_and_basename], [dnl
- case ${1} in
- */*) func_dirname_result="${1%/*}${2}" ;;
- * ) func_dirname_result="${3}" ;;
- esac
- func_basename_result="${1##*/}"])
-
- _LT_PROG_FUNCTION_REPLACE([func_stripname], [dnl
- # pdksh 5.2.14 does not do ${X%$Y} correctly if both X and Y are
- # positional parameters, so assign one to ordinary parameter first.
- func_stripname_result=${3}
- func_stripname_result=${func_stripname_result#"${1}"}
- func_stripname_result=${func_stripname_result%"${2}"}])
-
- _LT_PROG_FUNCTION_REPLACE([func_split_long_opt], [dnl
- func_split_long_opt_name=${1%%=*}
- func_split_long_opt_arg=${1#*=}])
-
- _LT_PROG_FUNCTION_REPLACE([func_split_short_opt], [dnl
- func_split_short_opt_arg=${1#??}
- func_split_short_opt_name=${1%"$func_split_short_opt_arg"}])
-
- _LT_PROG_FUNCTION_REPLACE([func_lo2o], [dnl
- case ${1} in
- *.lo) func_lo2o_result=${1%.lo}.${objext} ;;
- *) func_lo2o_result=${1} ;;
- esac])
-
- _LT_PROG_FUNCTION_REPLACE([func_xform], [ func_xform_result=${1%.*}.lo])
-
- _LT_PROG_FUNCTION_REPLACE([func_arith], [ func_arith_result=$(( $[*] ))])
-
- _LT_PROG_FUNCTION_REPLACE([func_len], [ func_len_result=${#1}])
-fi
-
-if test x"$lt_shell_append" = xyes; then
- _LT_PROG_FUNCTION_REPLACE([func_append], [ eval "${1}+=\\${2}"])
-
- _LT_PROG_FUNCTION_REPLACE([func_append_quoted], [dnl
- func_quote_for_eval "${2}"
-dnl m4 expansion turns \\\\ into \\, and then the shell eval turns that into \
- eval "${1}+=\\\\ \\$func_quote_for_eval_result"])
-
- # Save a `func_append' function call where possible by direct use of '+='
- sed -e 's%func_append \([[a-zA-Z_]]\{1,\}\) "%\1+="%g' $cfgfile > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
- test 0 -eq $? || _lt_function_replace_fail=:
-else
- # Save a `func_append' function call even when '+=' is not available
- sed -e 's%func_append \([[a-zA-Z_]]\{1,\}\) "%\1="$\1%g' $cfgfile > $cfgfile.tmp \
- && mv -f "$cfgfile.tmp" "$cfgfile" \
- || (rm -f "$cfgfile" && cp "$cfgfile.tmp" "$cfgfile" && rm -f "$cfgfile.tmp")
- test 0 -eq $? || _lt_function_replace_fail=:
-fi
-
-if test x"$_lt_function_replace_fail" = x":"; then
- AC_MSG_WARN([Unable to substitute extended shell functions in $ofile])
-fi
-])
-
-# _LT_PATH_CONVERSION_FUNCTIONS
-# -----------------------------
-# Determine which file name conversion functions should be used by
-# func_to_host_file (and, implicitly, by func_to_host_path). These are needed
-# for certain cross-compile configurations and native mingw.
-m4_defun([_LT_PATH_CONVERSION_FUNCTIONS],
-[AC_REQUIRE([AC_CANONICAL_HOST])dnl
-AC_REQUIRE([AC_CANONICAL_BUILD])dnl
-AC_MSG_CHECKING([how to convert $build file names to $host format])
-AC_CACHE_VAL(lt_cv_to_host_file_cmd,
-[case $host in
- *-*-mingw* )
- case $build in
- *-*-mingw* ) # actually msys
- lt_cv_to_host_file_cmd=func_convert_file_msys_to_w32
- ;;
- *-*-cygwin* )
- lt_cv_to_host_file_cmd=func_convert_file_cygwin_to_w32
- ;;
- * ) # otherwise, assume *nix
- lt_cv_to_host_file_cmd=func_convert_file_nix_to_w32
- ;;
- esac
- ;;
- *-*-cygwin* )
- case $build in
- *-*-mingw* ) # actually msys
- lt_cv_to_host_file_cmd=func_convert_file_msys_to_cygwin
- ;;
- *-*-cygwin* )
- lt_cv_to_host_file_cmd=func_convert_file_noop
- ;;
- * ) # otherwise, assume *nix
- lt_cv_to_host_file_cmd=func_convert_file_nix_to_cygwin
- ;;
- esac
- ;;
- * ) # unhandled hosts (and "normal" native builds)
- lt_cv_to_host_file_cmd=func_convert_file_noop
- ;;
-esac
-])
-to_host_file_cmd=$lt_cv_to_host_file_cmd
-AC_MSG_RESULT([$lt_cv_to_host_file_cmd])
-_LT_DECL([to_host_file_cmd], [lt_cv_to_host_file_cmd],
- [0], [convert $build file names to $host format])dnl
-
-AC_MSG_CHECKING([how to convert $build file names to toolchain format])
-AC_CACHE_VAL(lt_cv_to_tool_file_cmd,
-[#assume ordinary cross tools, or native build.
-lt_cv_to_tool_file_cmd=func_convert_file_noop
-case $host in
- *-*-mingw* )
- case $build in
- *-*-mingw* ) # actually msys
- lt_cv_to_tool_file_cmd=func_convert_file_msys_to_w32
- ;;
- esac
- ;;
-esac
-])
-to_tool_file_cmd=$lt_cv_to_tool_file_cmd
-AC_MSG_RESULT([$lt_cv_to_tool_file_cmd])
-_LT_DECL([to_tool_file_cmd], [lt_cv_to_tool_file_cmd],
- [0], [convert $build files to toolchain format])dnl
-])# _LT_PATH_CONVERSION_FUNCTIONS
+++ /dev/null
-# Helper functions for option handling. -*- Autoconf -*-
-#
-# Copyright (C) 2004, 2005, 2007, 2008, 2009 Free Software Foundation,
-# Inc.
-# Written by Gary V. Vaughan, 2004
-#
-# This file is free software; the Free Software Foundation gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-
-# serial 7 ltoptions.m4
-
-# This is to help aclocal find these macros, as it can't see m4_define.
-AC_DEFUN([LTOPTIONS_VERSION], [m4_if([1])])
-
-
-# _LT_MANGLE_OPTION(MACRO-NAME, OPTION-NAME)
-# ------------------------------------------
-m4_define([_LT_MANGLE_OPTION],
-[[_LT_OPTION_]m4_bpatsubst($1__$2, [[^a-zA-Z0-9_]], [_])])
-
-
-# _LT_SET_OPTION(MACRO-NAME, OPTION-NAME)
-# ---------------------------------------
-# Set option OPTION-NAME for macro MACRO-NAME, and if there is a
-# matching handler defined, dispatch to it. Other OPTION-NAMEs are
-# saved as a flag.
-m4_define([_LT_SET_OPTION],
-[m4_define(_LT_MANGLE_OPTION([$1], [$2]))dnl
-m4_ifdef(_LT_MANGLE_DEFUN([$1], [$2]),
- _LT_MANGLE_DEFUN([$1], [$2]),
- [m4_warning([Unknown $1 option `$2'])])[]dnl
-])
-
-
-# _LT_IF_OPTION(MACRO-NAME, OPTION-NAME, IF-SET, [IF-NOT-SET])
-# ------------------------------------------------------------
-# Execute IF-SET if OPTION is set, IF-NOT-SET otherwise.
-m4_define([_LT_IF_OPTION],
-[m4_ifdef(_LT_MANGLE_OPTION([$1], [$2]), [$3], [$4])])
-
-
-# _LT_UNLESS_OPTIONS(MACRO-NAME, OPTION-LIST, IF-NOT-SET)
-# -------------------------------------------------------
-# Execute IF-NOT-SET unless all options in OPTION-LIST for MACRO-NAME
-# are set.
-m4_define([_LT_UNLESS_OPTIONS],
-[m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
- [m4_ifdef(_LT_MANGLE_OPTION([$1], _LT_Option),
- [m4_define([$0_found])])])[]dnl
-m4_ifdef([$0_found], [m4_undefine([$0_found])], [$3
-])[]dnl
-])
-
-
-# _LT_SET_OPTIONS(MACRO-NAME, OPTION-LIST)
-# ----------------------------------------
-# OPTION-LIST is a space-separated list of Libtool options associated
-# with MACRO-NAME. If any OPTION has a matching handler declared with
-# LT_OPTION_DEFINE, dispatch to that macro; otherwise complain about
-# the unknown option and exit.
-m4_defun([_LT_SET_OPTIONS],
-[# Set options
-m4_foreach([_LT_Option], m4_split(m4_normalize([$2])),
- [_LT_SET_OPTION([$1], _LT_Option)])
-
-m4_if([$1],[LT_INIT],[
- dnl
- dnl Simply set some default values (i.e off) if boolean options were not
- dnl specified:
- _LT_UNLESS_OPTIONS([LT_INIT], [dlopen], [enable_dlopen=no
- ])
- _LT_UNLESS_OPTIONS([LT_INIT], [win32-dll], [enable_win32_dll=no
- ])
- dnl
- dnl If no reference was made to various pairs of opposing options, then
- dnl we run the default mode handler for the pair. For example, if neither
- dnl `shared' nor `disable-shared' was passed, we enable building of shared
- dnl archives by default:
- _LT_UNLESS_OPTIONS([LT_INIT], [shared disable-shared], [_LT_ENABLE_SHARED])
- _LT_UNLESS_OPTIONS([LT_INIT], [static disable-static], [_LT_ENABLE_STATIC])
- _LT_UNLESS_OPTIONS([LT_INIT], [pic-only no-pic], [_LT_WITH_PIC])
- _LT_UNLESS_OPTIONS([LT_INIT], [fast-install disable-fast-install],
- [_LT_ENABLE_FAST_INSTALL])
- ])
-])# _LT_SET_OPTIONS
-
-
-## --------------------------------- ##
-## Macros to handle LT_INIT options. ##
-## --------------------------------- ##
-
-# _LT_MANGLE_DEFUN(MACRO-NAME, OPTION-NAME)
-# -----------------------------------------
-m4_define([_LT_MANGLE_DEFUN],
-[[_LT_OPTION_DEFUN_]m4_bpatsubst(m4_toupper([$1__$2]), [[^A-Z0-9_]], [_])])
-
-
-# LT_OPTION_DEFINE(MACRO-NAME, OPTION-NAME, CODE)
-# -----------------------------------------------
-m4_define([LT_OPTION_DEFINE],
-[m4_define(_LT_MANGLE_DEFUN([$1], [$2]), [$3])[]dnl
-])# LT_OPTION_DEFINE
-
-
-# dlopen
-# ------
-LT_OPTION_DEFINE([LT_INIT], [dlopen], [enable_dlopen=yes
-])
-
-AU_DEFUN([AC_LIBTOOL_DLOPEN],
-[_LT_SET_OPTION([LT_INIT], [dlopen])
-AC_DIAGNOSE([obsolete],
-[$0: Remove this warning and the call to _LT_SET_OPTION when you
-put the `dlopen' option into LT_INIT's first parameter.])
-])
-
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_DLOPEN], [])
-
-
-# win32-dll
-# ---------
-# Declare package support for building win32 dll's.
-LT_OPTION_DEFINE([LT_INIT], [win32-dll],
-[enable_win32_dll=yes
-
-case $host in
-*-*-cygwin* | *-*-mingw* | *-*-pw32* | *-*-cegcc*)
- AC_CHECK_TOOL(AS, as, false)
- AC_CHECK_TOOL(DLLTOOL, dlltool, false)
- AC_CHECK_TOOL(OBJDUMP, objdump, false)
- ;;
-esac
-
-test -z "$AS" && AS=as
-_LT_DECL([], [AS], [1], [Assembler program])dnl
-
-test -z "$DLLTOOL" && DLLTOOL=dlltool
-_LT_DECL([], [DLLTOOL], [1], [DLL creation program])dnl
-
-test -z "$OBJDUMP" && OBJDUMP=objdump
-_LT_DECL([], [OBJDUMP], [1], [Object dumper program])dnl
-])# win32-dll
-
-AU_DEFUN([AC_LIBTOOL_WIN32_DLL],
-[AC_REQUIRE([AC_CANONICAL_HOST])dnl
-_LT_SET_OPTION([LT_INIT], [win32-dll])
-AC_DIAGNOSE([obsolete],
-[$0: Remove this warning and the call to _LT_SET_OPTION when you
-put the `win32-dll' option into LT_INIT's first parameter.])
-])
-
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_WIN32_DLL], [])
-
-
-# _LT_ENABLE_SHARED([DEFAULT])
-# ----------------------------
-# implement the --enable-shared flag, and supports the `shared' and
-# `disable-shared' LT_INIT options.
-# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
-m4_define([_LT_ENABLE_SHARED],
-[m4_define([_LT_ENABLE_SHARED_DEFAULT], [m4_if($1, no, no, yes)])dnl
-AC_ARG_ENABLE([shared],
- [AS_HELP_STRING([--enable-shared@<:@=PKGS@:>@],
- [build shared libraries @<:@default=]_LT_ENABLE_SHARED_DEFAULT[@:>@])],
- [p=${PACKAGE-default}
- case $enableval in
- yes) enable_shared=yes ;;
- no) enable_shared=no ;;
- *)
- enable_shared=no
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for pkg in $enableval; do
- IFS="$lt_save_ifs"
- if test "X$pkg" = "X$p"; then
- enable_shared=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac],
- [enable_shared=]_LT_ENABLE_SHARED_DEFAULT)
-
- _LT_DECL([build_libtool_libs], [enable_shared], [0],
- [Whether or not to build shared libraries])
-])# _LT_ENABLE_SHARED
-
-LT_OPTION_DEFINE([LT_INIT], [shared], [_LT_ENABLE_SHARED([yes])])
-LT_OPTION_DEFINE([LT_INIT], [disable-shared], [_LT_ENABLE_SHARED([no])])
-
-# Old names:
-AC_DEFUN([AC_ENABLE_SHARED],
-[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[shared])
-])
-
-AC_DEFUN([AC_DISABLE_SHARED],
-[_LT_SET_OPTION([LT_INIT], [disable-shared])
-])
-
-AU_DEFUN([AM_ENABLE_SHARED], [AC_ENABLE_SHARED($@)])
-AU_DEFUN([AM_DISABLE_SHARED], [AC_DISABLE_SHARED($@)])
-
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AM_ENABLE_SHARED], [])
-dnl AC_DEFUN([AM_DISABLE_SHARED], [])
-
-
-
-# _LT_ENABLE_STATIC([DEFAULT])
-# ----------------------------
-# implement the --enable-static flag, and support the `static' and
-# `disable-static' LT_INIT options.
-# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
-m4_define([_LT_ENABLE_STATIC],
-[m4_define([_LT_ENABLE_STATIC_DEFAULT], [m4_if($1, no, no, yes)])dnl
-AC_ARG_ENABLE([static],
- [AS_HELP_STRING([--enable-static@<:@=PKGS@:>@],
- [build static libraries @<:@default=]_LT_ENABLE_STATIC_DEFAULT[@:>@])],
- [p=${PACKAGE-default}
- case $enableval in
- yes) enable_static=yes ;;
- no) enable_static=no ;;
- *)
- enable_static=no
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for pkg in $enableval; do
- IFS="$lt_save_ifs"
- if test "X$pkg" = "X$p"; then
- enable_static=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac],
- [enable_static=]_LT_ENABLE_STATIC_DEFAULT)
-
- _LT_DECL([build_old_libs], [enable_static], [0],
- [Whether or not to build static libraries])
-])# _LT_ENABLE_STATIC
-
-LT_OPTION_DEFINE([LT_INIT], [static], [_LT_ENABLE_STATIC([yes])])
-LT_OPTION_DEFINE([LT_INIT], [disable-static], [_LT_ENABLE_STATIC([no])])
-
-# Old names:
-AC_DEFUN([AC_ENABLE_STATIC],
-[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[static])
-])
-
-AC_DEFUN([AC_DISABLE_STATIC],
-[_LT_SET_OPTION([LT_INIT], [disable-static])
-])
-
-AU_DEFUN([AM_ENABLE_STATIC], [AC_ENABLE_STATIC($@)])
-AU_DEFUN([AM_DISABLE_STATIC], [AC_DISABLE_STATIC($@)])
-
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AM_ENABLE_STATIC], [])
-dnl AC_DEFUN([AM_DISABLE_STATIC], [])
-
-
-
-# _LT_ENABLE_FAST_INSTALL([DEFAULT])
-# ----------------------------------
-# implement the --enable-fast-install flag, and support the `fast-install'
-# and `disable-fast-install' LT_INIT options.
-# DEFAULT is either `yes' or `no'. If omitted, it defaults to `yes'.
-m4_define([_LT_ENABLE_FAST_INSTALL],
-[m4_define([_LT_ENABLE_FAST_INSTALL_DEFAULT], [m4_if($1, no, no, yes)])dnl
-AC_ARG_ENABLE([fast-install],
- [AS_HELP_STRING([--enable-fast-install@<:@=PKGS@:>@],
- [optimize for fast installation @<:@default=]_LT_ENABLE_FAST_INSTALL_DEFAULT[@:>@])],
- [p=${PACKAGE-default}
- case $enableval in
- yes) enable_fast_install=yes ;;
- no) enable_fast_install=no ;;
- *)
- enable_fast_install=no
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for pkg in $enableval; do
- IFS="$lt_save_ifs"
- if test "X$pkg" = "X$p"; then
- enable_fast_install=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac],
- [enable_fast_install=]_LT_ENABLE_FAST_INSTALL_DEFAULT)
-
-_LT_DECL([fast_install], [enable_fast_install], [0],
- [Whether or not to optimize for fast installation])dnl
-])# _LT_ENABLE_FAST_INSTALL
-
-LT_OPTION_DEFINE([LT_INIT], [fast-install], [_LT_ENABLE_FAST_INSTALL([yes])])
-LT_OPTION_DEFINE([LT_INIT], [disable-fast-install], [_LT_ENABLE_FAST_INSTALL([no])])
-
-# Old names:
-AU_DEFUN([AC_ENABLE_FAST_INSTALL],
-[_LT_SET_OPTION([LT_INIT], m4_if([$1], [no], [disable-])[fast-install])
-AC_DIAGNOSE([obsolete],
-[$0: Remove this warning and the call to _LT_SET_OPTION when you put
-the `fast-install' option into LT_INIT's first parameter.])
-])
-
-AU_DEFUN([AC_DISABLE_FAST_INSTALL],
-[_LT_SET_OPTION([LT_INIT], [disable-fast-install])
-AC_DIAGNOSE([obsolete],
-[$0: Remove this warning and the call to _LT_SET_OPTION when you put
-the `disable-fast-install' option into LT_INIT's first parameter.])
-])
-
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_ENABLE_FAST_INSTALL], [])
-dnl AC_DEFUN([AM_DISABLE_FAST_INSTALL], [])
-
-
-# _LT_WITH_PIC([MODE])
-# --------------------
-# implement the --with-pic flag, and support the `pic-only' and `no-pic'
-# LT_INIT options.
-# MODE is either `yes' or `no'. If omitted, it defaults to `both'.
-m4_define([_LT_WITH_PIC],
-[AC_ARG_WITH([pic],
- [AS_HELP_STRING([--with-pic@<:@=PKGS@:>@],
- [try to use only PIC/non-PIC objects @<:@default=use both@:>@])],
- [lt_p=${PACKAGE-default}
- case $withval in
- yes|no) pic_mode=$withval ;;
- *)
- pic_mode=default
- # Look at the argument we got. We use all the common list separators.
- lt_save_ifs="$IFS"; IFS="${IFS}$PATH_SEPARATOR,"
- for lt_pkg in $withval; do
- IFS="$lt_save_ifs"
- if test "X$lt_pkg" = "X$lt_p"; then
- pic_mode=yes
- fi
- done
- IFS="$lt_save_ifs"
- ;;
- esac],
- [pic_mode=default])
-
-test -z "$pic_mode" && pic_mode=m4_default([$1], [default])
-
-_LT_DECL([], [pic_mode], [0], [What type of objects to build])dnl
-])# _LT_WITH_PIC
-
-LT_OPTION_DEFINE([LT_INIT], [pic-only], [_LT_WITH_PIC([yes])])
-LT_OPTION_DEFINE([LT_INIT], [no-pic], [_LT_WITH_PIC([no])])
-
-# Old name:
-AU_DEFUN([AC_LIBTOOL_PICMODE],
-[_LT_SET_OPTION([LT_INIT], [pic-only])
-AC_DIAGNOSE([obsolete],
-[$0: Remove this warning and the call to _LT_SET_OPTION when you
-put the `pic-only' option into LT_INIT's first parameter.])
-])
-
-dnl aclocal-1.4 backwards compatibility:
-dnl AC_DEFUN([AC_LIBTOOL_PICMODE], [])
-
-## ----------------- ##
-## LTDL_INIT Options ##
-## ----------------- ##
-
-m4_define([_LTDL_MODE], [])
-LT_OPTION_DEFINE([LTDL_INIT], [nonrecursive],
- [m4_define([_LTDL_MODE], [nonrecursive])])
-LT_OPTION_DEFINE([LTDL_INIT], [recursive],
- [m4_define([_LTDL_MODE], [recursive])])
-LT_OPTION_DEFINE([LTDL_INIT], [subproject],
- [m4_define([_LTDL_MODE], [subproject])])
-
-m4_define([_LTDL_TYPE], [])
-LT_OPTION_DEFINE([LTDL_INIT], [installable],
- [m4_define([_LTDL_TYPE], [installable])])
-LT_OPTION_DEFINE([LTDL_INIT], [convenience],
- [m4_define([_LTDL_TYPE], [convenience])])
+++ /dev/null
-# ltsugar.m4 -- libtool m4 base layer. -*-Autoconf-*-
-#
-# Copyright (C) 2004, 2005, 2007, 2008 Free Software Foundation, Inc.
-# Written by Gary V. Vaughan, 2004
-#
-# This file is free software; the Free Software Foundation gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-
-# serial 6 ltsugar.m4
-
-# This is to help aclocal find these macros, as it can't see m4_define.
-AC_DEFUN([LTSUGAR_VERSION], [m4_if([0.1])])
-
-
-# lt_join(SEP, ARG1, [ARG2...])
-# -----------------------------
-# Produce ARG1SEPARG2...SEPARGn, omitting [] arguments and their
-# associated separator.
-# Needed until we can rely on m4_join from Autoconf 2.62, since all earlier
-# versions in m4sugar had bugs.
-m4_define([lt_join],
-[m4_if([$#], [1], [],
- [$#], [2], [[$2]],
- [m4_if([$2], [], [], [[$2]_])$0([$1], m4_shift(m4_shift($@)))])])
-m4_define([_lt_join],
-[m4_if([$#$2], [2], [],
- [m4_if([$2], [], [], [[$1$2]])$0([$1], m4_shift(m4_shift($@)))])])
-
-
-# lt_car(LIST)
-# lt_cdr(LIST)
-# ------------
-# Manipulate m4 lists.
-# These macros are necessary as long as will still need to support
-# Autoconf-2.59 which quotes differently.
-m4_define([lt_car], [[$1]])
-m4_define([lt_cdr],
-[m4_if([$#], 0, [m4_fatal([$0: cannot be called without arguments])],
- [$#], 1, [],
- [m4_dquote(m4_shift($@))])])
-m4_define([lt_unquote], $1)
-
-
-# lt_append(MACRO-NAME, STRING, [SEPARATOR])
-# ------------------------------------------
-# Redefine MACRO-NAME to hold its former content plus `SEPARATOR'`STRING'.
-# Note that neither SEPARATOR nor STRING are expanded; they are appended
-# to MACRO-NAME as is (leaving the expansion for when MACRO-NAME is invoked).
-# No SEPARATOR is output if MACRO-NAME was previously undefined (different
-# than defined and empty).
-#
-# This macro is needed until we can rely on Autoconf 2.62, since earlier
-# versions of m4sugar mistakenly expanded SEPARATOR but not STRING.
-m4_define([lt_append],
-[m4_define([$1],
- m4_ifdef([$1], [m4_defn([$1])[$3]])[$2])])
-
-
-
-# lt_combine(SEP, PREFIX-LIST, INFIX, SUFFIX1, [SUFFIX2...])
-# ----------------------------------------------------------
-# Produce a SEP delimited list of all paired combinations of elements of
-# PREFIX-LIST with SUFFIX1 through SUFFIXn. Each element of the list
-# has the form PREFIXmINFIXSUFFIXn.
-# Needed until we can rely on m4_combine added in Autoconf 2.62.
-m4_define([lt_combine],
-[m4_if(m4_eval([$# > 3]), [1],
- [m4_pushdef([_Lt_sep], [m4_define([_Lt_sep], m4_defn([lt_car]))])]]dnl
-[[m4_foreach([_Lt_prefix], [$2],
- [m4_foreach([_Lt_suffix],
- ]m4_dquote(m4_dquote(m4_shift(m4_shift(m4_shift($@)))))[,
- [_Lt_sep([$1])[]m4_defn([_Lt_prefix])[$3]m4_defn([_Lt_suffix])])])])])
-
-
-# lt_if_append_uniq(MACRO-NAME, VARNAME, [SEPARATOR], [UNIQ], [NOT-UNIQ])
-# -----------------------------------------------------------------------
-# Iff MACRO-NAME does not yet contain VARNAME, then append it (delimited
-# by SEPARATOR if supplied) and expand UNIQ, else NOT-UNIQ.
-m4_define([lt_if_append_uniq],
-[m4_ifdef([$1],
- [m4_if(m4_index([$3]m4_defn([$1])[$3], [$3$2$3]), [-1],
- [lt_append([$1], [$2], [$3])$4],
- [$5])],
- [lt_append([$1], [$2], [$3])$4])])
-
-
-# lt_dict_add(DICT, KEY, VALUE)
-# -----------------------------
-m4_define([lt_dict_add],
-[m4_define([$1($2)], [$3])])
-
-
-# lt_dict_add_subkey(DICT, KEY, SUBKEY, VALUE)
-# --------------------------------------------
-m4_define([lt_dict_add_subkey],
-[m4_define([$1($2:$3)], [$4])])
-
-
-# lt_dict_fetch(DICT, KEY, [SUBKEY])
-# ----------------------------------
-m4_define([lt_dict_fetch],
-[m4_ifval([$3],
- m4_ifdef([$1($2:$3)], [m4_defn([$1($2:$3)])]),
- m4_ifdef([$1($2)], [m4_defn([$1($2)])]))])
-
-
-# lt_if_dict_fetch(DICT, KEY, [SUBKEY], VALUE, IF-TRUE, [IF-FALSE])
-# -----------------------------------------------------------------
-m4_define([lt_if_dict_fetch],
-[m4_if(lt_dict_fetch([$1], [$2], [$3]), [$4],
- [$5],
- [$6])])
-
-
-# lt_dict_filter(DICT, [SUBKEY], VALUE, [SEPARATOR], KEY, [...])
-# --------------------------------------------------------------
-m4_define([lt_dict_filter],
-[m4_if([$5], [], [],
- [lt_join(m4_quote(m4_default([$4], [[, ]])),
- lt_unquote(m4_split(m4_normalize(m4_foreach(_Lt_key, lt_car([m4_shiftn(4, $@)]),
- [lt_if_dict_fetch([$1], _Lt_key, [$2], [$3], [_Lt_key ])])))))])[]dnl
-])
+++ /dev/null
-# ltversion.m4 -- version numbers -*- Autoconf -*-
-#
-# Copyright (C) 2004 Free Software Foundation, Inc.
-# Written by Scott James Remnant, 2004
-#
-# This file is free software; the Free Software Foundation gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-
-# @configure_input@
-
-# serial 3337 ltversion.m4
-# This file is part of GNU Libtool
-
-m4_define([LT_PACKAGE_VERSION], [2.4.2])
-m4_define([LT_PACKAGE_REVISION], [1.3337])
-
-AC_DEFUN([LTVERSION_VERSION],
-[macro_version='2.4.2'
-macro_revision='1.3337'
-_LT_DECL(, macro_version, 0, [Which release of libtool.m4 was used?])
-_LT_DECL(, macro_revision, 0)
-])
+++ /dev/null
-# lt~obsolete.m4 -- aclocal satisfying obsolete definitions. -*-Autoconf-*-
-#
-# Copyright (C) 2004, 2005, 2007, 2009 Free Software Foundation, Inc.
-# Written by Scott James Remnant, 2004.
-#
-# This file is free software; the Free Software Foundation gives
-# unlimited permission to copy and/or distribute it, with or without
-# modifications, as long as this notice is preserved.
-
-# serial 5 lt~obsolete.m4
-
-# These exist entirely to fool aclocal when bootstrapping libtool.
-#
-# In the past libtool.m4 has provided macros via AC_DEFUN (or AU_DEFUN)
-# which have later been changed to m4_define as they aren't part of the
-# exported API, or moved to Autoconf or Automake where they belong.
-#
-# The trouble is, aclocal is a bit thick. It'll see the old AC_DEFUN
-# in /usr/share/aclocal/libtool.m4 and remember it, then when it sees us
-# using a macro with the same name in our local m4/libtool.m4 it'll
-# pull the old libtool.m4 in (it doesn't see our shiny new m4_define
-# and doesn't know about Autoconf macros at all.)
-#
-# So we provide this file, which has a silly filename so it's always
-# included after everything else. This provides aclocal with the
-# AC_DEFUNs it wants, but when m4 processes it, it doesn't do anything
-# because those macros already exist, or will be overwritten later.
-# We use AC_DEFUN over AU_DEFUN for compatibility with aclocal-1.6.
-#
-# Anytime we withdraw an AC_DEFUN or AU_DEFUN, remember to add it here.
-# Yes, that means every name once taken will need to remain here until
-# we give up compatibility with versions before 1.7, at which point
-# we need to keep only those names which we still refer to.
-
-# This is to help aclocal find these macros, as it can't see m4_define.
-AC_DEFUN([LTOBSOLETE_VERSION], [m4_if([1])])
-
-m4_ifndef([AC_LIBTOOL_LINKER_OPTION], [AC_DEFUN([AC_LIBTOOL_LINKER_OPTION])])
-m4_ifndef([AC_PROG_EGREP], [AC_DEFUN([AC_PROG_EGREP])])
-m4_ifndef([_LT_AC_PROG_ECHO_BACKSLASH], [AC_DEFUN([_LT_AC_PROG_ECHO_BACKSLASH])])
-m4_ifndef([_LT_AC_SHELL_INIT], [AC_DEFUN([_LT_AC_SHELL_INIT])])
-m4_ifndef([_LT_AC_SYS_LIBPATH_AIX], [AC_DEFUN([_LT_AC_SYS_LIBPATH_AIX])])
-m4_ifndef([_LT_PROG_LTMAIN], [AC_DEFUN([_LT_PROG_LTMAIN])])
-m4_ifndef([_LT_AC_TAGVAR], [AC_DEFUN([_LT_AC_TAGVAR])])
-m4_ifndef([AC_LTDL_ENABLE_INSTALL], [AC_DEFUN([AC_LTDL_ENABLE_INSTALL])])
-m4_ifndef([AC_LTDL_PREOPEN], [AC_DEFUN([AC_LTDL_PREOPEN])])
-m4_ifndef([_LT_AC_SYS_COMPILER], [AC_DEFUN([_LT_AC_SYS_COMPILER])])
-m4_ifndef([_LT_AC_LOCK], [AC_DEFUN([_LT_AC_LOCK])])
-m4_ifndef([AC_LIBTOOL_SYS_OLD_ARCHIVE], [AC_DEFUN([AC_LIBTOOL_SYS_OLD_ARCHIVE])])
-m4_ifndef([_LT_AC_TRY_DLOPEN_SELF], [AC_DEFUN([_LT_AC_TRY_DLOPEN_SELF])])
-m4_ifndef([AC_LIBTOOL_PROG_CC_C_O], [AC_DEFUN([AC_LIBTOOL_PROG_CC_C_O])])
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-m4_ifndef([AC_LIBTOOL_OBJDIR], [AC_DEFUN([AC_LIBTOOL_OBJDIR])])
-m4_ifndef([AC_LTDL_OBJDIR], [AC_DEFUN([AC_LTDL_OBJDIR])])
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-m4_ifndef([_AC_PROG_LIBTOOL], [AC_DEFUN([_AC_PROG_LIBTOOL])])
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-m4_ifndef([AC_DISABLE_FAST_INSTALL], [AC_DEFUN([AC_DISABLE_FAST_INSTALL])])
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-m4_ifndef([_LT_AC_FILE_LTDLL_C], [AC_DEFUN([_LT_AC_FILE_LTDLL_C])])
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-m4_ifndef([_LT_AC_PROG_CXXCPP], [AC_DEFUN([_LT_AC_PROG_CXXCPP])])
-m4_ifndef([_LT_PREPARE_SED_QUOTE_VARS], [AC_DEFUN([_LT_PREPARE_SED_QUOTE_VARS])])
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-m4_ifndef([_LT_PROG_CXX], [AC_DEFUN([_LT_PROG_CXX])])
+++ /dev/null
-get_uint_32(buf)
-get_uint_16(buf)
-get_int_32(buf)
+++ /dev/null
-# makefile for libpng on Solaris 2.x with cc
-# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 2002, 2006, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1998 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME=libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-CC=cc
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=echo
-RM_F=/bin/rm -f
-
-SUN_CC_FLAGS=-fast -xtarget=ultra
-SUN_LD_FLAGS=-fast -xtarget=ultra
-
-# where make install puts libpng.a, libpng16.so and libpng16/png.h
-prefix=/a
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-# Changing these to ../zlib poses a security risk. If you want
-# to have zlib in an adjacent directory, specify the full path instead of "..".
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-
-ZLIBLIB=/usr/lib
-ZLIBINC=/usr/include
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
- # $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=$(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) libpng.a -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-include scripts/pnglibconf.mak
-DELETE = $(RM_F)
-DFNFLAGS = $(DEFS) $(CPPFLAGS)
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo libdir=\"$(LIBPATH)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-R$(LIBPATH)\"; \
- echo ccopts=\"-xtarget=ultra\"; \
- echo ldopts=\"-xtarget=ultra\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- @case "`type ld`" in *ucb*) \
- echo; \
- echo '## WARNING:'; \
- echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
- echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
- echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
- echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
- echo '## at all. If it is, things are likely to break because of'; \
- echo '## the libucb dependency that is created.'; \
- echo; \
- ;; \
- esac
- $(LD) -G -L$(ZLIBLIB) -R$(ZLIBLIB) -h $(LIBSOMAJ) \
- -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) $(SUN_CC_FLAGS) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtestd -L$(DL) -R$(DL) `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) $(SUN_CC_FLAGS) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng on Solaris 2.x with cc
-# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 2002, 2006, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1998 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME=libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-CC=cc
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=echo
-RM_F=/bin/rm -f
-
-SUN_CC_FLAGS=-fast -xtarget=ultra -xarch=v9
-SUN_LD_FLAGS=-fast -xtarget=ultra -xarch=v9
-
-# where make install puts libpng.a, libpng16.so and libpng16/png.h
-prefix=/a
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-# Changing these to ../zlib poses a security risk. If you want
-# to have zlib in an adjacent directory, specify the full path instead of "..".
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-
-ZLIBLIB=/usr/lib
-ZLIBINC=/usr/include
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) $(SUN_CC_FLAGS) \
- # $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-include scripts/pnglibconf.mak
-DELETE = $(RM_F)
-DFNFLAGS = $(DEFS) $(CPPFLAGS)
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo libdir=\"$(LIBPATH)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-R$(LIBPATH)\"; \
- echo ccopts=\"-xtarget=ultra -xarch=v9\"; \
- echo ldopts=\"-xtarget=ultra -xarch=v9\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- @case "`type ld`" in *ucb*) \
- echo; \
- echo '## WARNING:'; \
- echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
- echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
- echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
- echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
- echo '## at all. If it is, things are likely to break because of'; \
- echo '## the libucb dependency that is created.'; \
- echo; \
- ;; \
- esac
- $(LD) -G -L$(ZLIBLIB) -R$(ZLIBLIB) -h $(LIBSOMAJ) \
- -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) $(SUN_CC_FLAGS) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtestd -L$(DL) -R$(DL) `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) $(SUN_CC_FLAGS) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- $(SUN_LD_FLAGS) -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# Project: libpng
-
-
-# Toolflags:
-CCflags = -c -depend !Depend -IC:,Zlib: -g -throwback -DRISCOS -fnah
-C++flags = -c -depend !Depend -IC: -throwback
-Linkflags = -aif -c++ -o $@
-ObjAsmflags = -throwback -NoCache -depend !Depend
-CMHGflags =
-LibFileflags = -c -l -o $@
-Squeezeflags = -o $@
-
-# Final targets:
-@.libpng-lib: @.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \
- @.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \
- @.o.pngrutil @.o.pngtrans @.o.pngwrite @.o.pngwtran @.o.pngwutil
- LibFile $(LibFileflags) @.o.png @.o.pngerror @.o.pngrio @.o.pngrtran \
- @.o.pngmem @.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngwio \
- @.o.pngrutil @.o.pngtrans @.o.pngwrite @.o.pngwtran @.o.pngwutil
-@.mm-libpng-lib: @.mm.png @.mm.pngerror @.mm.pngrio @.mm.pngwio @.mm.pngmem \
- @.mm.pngpread @.mm.pngset @.mm.pngget @.mm.pngread @.mm.pngrtran \
- @.mm.pngrutil @.mm.pngtrans @.mm.pngwrite @.mm.pngwtran @.mm.pngwutil
- LibFile $(LibFileflags) @.mm.png @.mm.pngerror @.mm.pngrio \
- @.mm.pngwio @.mm.pngmem @.mm.pngpread @.mm.pngset @.mm.pngget \
- @.mm.pngread @.mm.pngrtran @.mm.pngrutil @.mm.pngtrans @.mm.pngwrite \
- @.mm.pngwtran @.mm.pngwutil
-
-
-# User-editable dependencies:
-# (C) Copyright 1997 Tom Tanner
-Test: @.pngtest
- <Prefix$Dir>.pngtest
- @remove <Prefix$Dir>.pngtest
-
-#It would be nice if you could stop "make" listing from here on!
-@.pngtest: @.o.pngtest @.libpng-lib C:o.Stubs Zlib:zlib_lib
- Link $(Linkflags) @.o.pngtest @.libpng-lib C:o.Stubs Zlib:zlib_lib
-
-.SUFFIXES: .o .mm .c
-
-.c.mm:
- MemCheck.CC cc $(ccflags) -o $@ LibPng:$<
-.c.o:
- cc $(ccflags) -o $@ $<
-
-# See scripts.mak.libpngconf for how to generate this:
-@.h.libpngconf: @.scripts.h.libpngconf
- copy @.scripts.h.libpngconf $@
-
-# Static dependencies:
-@.o.png @.o.pngerror @.o.pngrio @.o.pngwio @.o.pngmem \
-@.o.pngpread @.o.pngset @.o.pngget @.o.pngread @.o.pngrtran \
-@.o.pngrutil @.o.pngtrans @.o.pngwrite @.o.pngwtran @.o.pngwutil \
-@.o.pngtest: @.h.libpngconf
-
-
-# Dynamic dependencies:
+++ /dev/null
-# makefile for libpng using gcc (generic, static library)
-# Copyright (C) 2002, 2006-2009 Glenn Randers-Pehrson
-# Copyright (C) 2000 Cosmin Truta
-# Copyright (C) 2000 Marc O. Gloor (AIX support added, from makefile.gcc)
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Location of the zlib library and include files
-ZLIBINC = ../zlib
-ZLIBLIB = ../zlib
-
-# Compiler, linker, lib and other tools
-CC = gcc
-LD = $(CC)
-AR_RC = ar rcs
-MKDIR_P = mkdir -p
-RANLIB = ranlib
-RM_F = rm -f
-LN_SF = ln -f -s
-
-LIBNAME=libpng16
-PNGMAJ = 16
-
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-
-CDEBUG = -g -DPNG_DEBUG=5
-LDDEBUG =
-CRELEASE = -O2
-LDRELEASE = -s
-WARNMORE=-W -Wall
-CFLAGS = -I$(ZLIBINC) $(WARNMORE) $(CRELEASE)
-LDFLAGS = -L. -L$(ZLIBLIB) -lpng16 -lz -lm $(LDRELEASE)
-
-# File extensions
-O=.o
-A=.a
-E=
-
-# Variables
-OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
- pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
- pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-
-# Targets
-all: $(LIBNAME)$(A) pngtest$(E)
-
-include scripts/pnglibconf.mak
-REMOVE = $(RM_F)
-DFNFLAGS = $(DEFS) $(CPPFLAGS)
-
-$(LIBNAME)$(A): $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-test: pngtest$(E)
- ./pngtest$(E)
-
-pngtest$(E): pngtest$(O) $(LIBNAME)$(A)
- $(LD) -o $@ pngtest$(O) $(LDFLAGS)
-
-install: $(LIBNAME)$(A)
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DI)/$(LIBNAME)/png.h
- -@$(RM_F) $(DI)/$(LIBNAME)/pngconf.h
- -@$(RM_F) $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h
- -@$(RM_F) $(DI)/pngconf.h
- -@$(RM_F) $(DI)/pnglibconf.h
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h \
- $(DI)/$(LIBNAME)/pngconf.h \
- $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) -r $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
- -@$(RM_F) $(DL)/$(LIBNAME)$(A)
- -@$(RM_F) $(DL)/libpng$(A)
- cp $(LIBNAME)$(A) $(DL)/$(LIBNAME)$(A)
- chmod 644 $(DL)/$(LIBNAME)$(A)
- (cd $(DL); $(LN_SF) $(LIBNAME)$(A) libpng$(A))
- (cd $(DI); $(LN_SF) libpng/* .;)
-
-clean:
- $(RM_F) *.o $(LIBNAME)$(A) pngtest pngout.png pnglibconf.h
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
+++ /dev/null
-# Commodore Amiga Makefile
-# makefile for libpng and SAS C V6.5x compiler
-# Copyright (C) 1995-2000 Wolf Faust
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# Location/path of zlib include files
-ZLIB=/zlib
-#compiler
-CC=sc
-#compiler flags
-# WARNING: a bug in V6.51 causes bad code with OPTGO
-# So use V6.55 or set NOOPTGO!!!!!!!!!
-CFLAGS= NOSTKCHK PARMS=REG OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL\
- OPTLOOP OPTRDEP=4 OPTDEP=4 OPTCOMP=4 INCLUDEDIR=$(ZLIB) \
- DEFINE=PNG_INTERNAL
-#linker flags
-LDFLAGS= SD ND BATCH
-#link libs
-LDLIBS= libpng.lib libgz.lib LIB:scm.lib LIB:sc.lib Lib:amiga.lib
-# linker
-LN= slink
-# file deletion command
-RM= delete quiet
-# file copy command?
-CP= copy
-# library (.lib) file creation command
-AR= oml
-# make directory command
-MKDIR= makedir
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: libpng.lib pngtest
-
-libpng.lib: $(OBJS)
--$(RM) libpng.lib
-$(AR) libpng.lib r $(OBJS)
-
-$(OBJS): pngpriv.h png.h pngconf.h pnglibconf.h pnginfo.h pngstruct.h pngdebug.h
-
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
-$(CP) scripts/pnglibconf.h.prebuilt pnglibconf.h
-
-pngtest: pngtest.o libpng.lib
-$(LN) <WITH <
-$(LDFLAGS)
-TO pngtest
-FROM LIB:c.o pngtest.o
-LIB $(LDLIBS)
-<
-
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 2002 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# Modified for LC56/ATARI assumes libz.lib is in same dir and uses default
-# rules for library management
-#
-CFLAGS=-I..\zlib -O
-LBR = png.lib
-LDFLAGS=-lpng -lz -lm
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-OBJS = $(LBR)(png.o) $(LBR)(pngset.o) $(LBR)(pngget.o) $(LBR)(pngrutil.o)\
- $(LBR)(pngtrans.o) $(LBR)(pngwutil.o)\
- $(LBR)(pngread.o) $(LBR)(pngerror.o) $(LBR)(pngwrite.o)\
- $(LBR)(pngrtran.o) $(LBR)(pngwtran.o)\
- $(LBR)(pngmem.o) $(LBR)(pngrio.o) $(LBR)(pngwio.o) $(LBR)(pngpread.o)
-
-all: $(LBR) pngtest.ttp
-
-$(LBR): $(OBJS)
-
-$(OBJS): pngpriv.h png.h pngconf.h pnglibconf.h pnginfo.h pngstruct.h pngdebug.h
-
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt pnglibconf.h
-
-pngtest.ttp: pngtest.o $(LBR)
- $(CC) $(CFLAGS) $(LDFLAGS) -o$@ pngtest.o
-
-install: libpng.a
- -@mkdir $(DESTDIR)$(INCPATH)
- -@mkdir $(DESTDIR)$(INCPATH)/libpng
- -@mkdir $(DESTDIR)$(LIBPATH)
- -@rm -f $(DESTDIR)$(INCPATH)/png.h
- -@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
- -@rm -f $(DESTDIR)$(INCPATH)/pnglibconf.h
- cp png.h $(DESTDIR)$(INCPATH)/libpng
- cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
- cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
- (cd $(DESTDIR)$(INCPATH); ln -f -s $(LIBNAME) libpng; \
- ln -f -s $(LIBNAME)/* .)
+++ /dev/null
-# Makefile for libpng
-# 32-bit Borland C++ (Note: All modules are compiled in C mode)
-# To build the library, do:
-# "make -fmakefile.bc32"
-#
-# -------------------- 32-bit Borland C++ --------------------
-
-### Absolutely necessary for this makefile to work
-.AUTODEPEND
-
-## Where zlib.h, zconf.h and zlib.lib are
-ZLIB_DIR=..\zlib
-
-## Compiler, linker and lib stuff
-CC=bcc32
-LD=bcc32
-LIB=tlib
-
-# -3 = 386, -4 = 486, -5 = Pentium etc.
-!ifndef TARGET_CPU
-#TARGET_CPU=-6
-!endif
-
-# Use this if you don't want Borland's fancy exception handling
-# (Caution: doesn't work with CBuilderX)
-#NOEHLIB=noeh32.lib
-
-!ifdef DEBUG
-CDEBUG=-v
-LDEBUG=-v
-!else
-CDEBUG=
-LDEBUG=
-!endif
-
-# STACKOFLOW=1
-!ifdef STACKOFLOW
-CDEBUG=$(CDEBUG) -N
-LDEBUG=$(LDEBUG) -N
-!endif
-
-# -O2 optimize for speed
-# -d merge duplicate strings
-# -k- turn off standard stack frame
-# -w display all warnings
-CFLAGS=-I$(ZLIB_DIR) -O2 -d -k- -w $(TARGET_CPU) $(CDEBUG)
-
-# -M generate map file
-LDFLAGS=-L$(ZLIB_DIR) -M $(LDEBUG)
-
-## Variables
-OBJS = \
- png.obj \
- pngerror.obj \
- pngget.obj \
- pngmem.obj \
- pngpread.obj \
- pngread.obj \
- pngrio.obj \
- pngrtran.obj \
- pngrutil.obj \
- pngset.obj \
- pngtrans.obj \
- pngwio.obj \
- pngwrite.obj \
- pngwtran.obj \
- pngwutil.obj
-
-LIBOBJS = \
- +png.obj \
- +pngerror.obj \
- +pngget.obj \
- +pngmem.obj \
- +pngpread.obj \
- +pngread.obj \
- +pngrio.obj \
- +pngrtran.obj \
- +pngrutil.obj \
- +pngset.obj \
- +pngtrans.obj \
- +pngwio.obj \
- +pngwrite.obj \
- +pngwtran.obj \
- +pngwutil.obj
-
-LIBNAME=libpng.lib
-
-## Implicit rules
-# Braces let make "batch" calls to the compiler,
-# 2 calls instead of 12; space is important.
-.c.obj:
- $(CC) $(CFLAGS) -c {$*.c }
-
-.c.exe:
- $(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib.lib $(NOEHLIB)
-
-.obj.exe:
- $(LD) $(LDFLAGS) $*.obj $(LIBNAME) zlib.lib $(NOEHLIB)
-
-## Major targets
-all: libpng pngtest
-
-libpng: $(LIBNAME)
-
-pngtest: pngtest.exe
-
-test: pngtest.exe
- pngtest
-
-## Minor Targets
-
-# see scripts\pnglibconf.mak for how to make this file
-# with different options
-pnglibconf.h: scripts\pnglibconf.h.prebuilt
- copy scripts\pnglibconf.h.prebuilt $@
-
-png.obj: png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.obj: pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.obj: pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.obj: pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.obj: pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.obj: pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.obj: pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.obj: pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.obj: pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtest.obj: pngtest.c png.h pngconf.h pnglibconf.h
-
-$(LIBNAME): $(OBJS)
- -del $(LIBNAME)
- $(LIB) $(LIBNAME) @&&|
-$(LIBOBJS), libpng
-|
-
-# Cleanup
-clean:
- -del pnglibconf.h
- -del *.obj
- -del $(LIBNAME)
- -del pngtest.exe
- -del *.lst
- -del *.map
- -del *.tds
- -del pngout.png
-
-# End of makefile for libpng
+++ /dev/null
-# makefile for libpng on BeOS x86 ELF with gcc
-# modified from makefile.linux by Sander Stoks
-# Copyright (C) 2002, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1999 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME=libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-CC=gcc
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-# Where the zlib library and include files are located
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-
-ALIGN=
-# For i386:
-# ALIGN=-malign-loops=2 -malign-functions=2
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-
-# On BeOS, -O1 is actually better than -O3. This is a known bug but it's
-# still here in R4.5
-CFLAGS=-I$(ZLIBINC) -W -Wall -O1 -funroll-loops \
- $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-# LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng -lz
-LDFLAGS=-L. -Wl,-soname=$(LIBSOMAJ) -L$(ZLIBLIB) -lz
-
-# where make install puts libpng.a, libpng16.so*, and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS)
-
-.SUFFIXES: .c .o
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# try include scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo libs=\"-lpng16 -lz \"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
- cp $(LIBSO)* /boot/home/config/lib
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(CC) -nostart -Wl,-soname,$(LIBSOMAJ) -o \
- $(LIBSOMAJ) $(OBJSDLL) $(LDFLAGS)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -L$(ZLIBLIB) -L. -lz -lpng16 -o pngtest pngtest.o
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) $(CFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) -Wl,-rpath $(ZLIBLIB):$(DL) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- $(CC) $(CFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
- $(LIBSO) $(LIBSOMAJ)* pngtesti \
- pnglibconf.h libpng.pc
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# Makefile for libpng
-# 16-bit Borland C++ (Note: All modules are compiled in C mode)
-# To build the library, do:
-# "make -fmakefile.bor -DMODEL=c"
-# or: "make -fmakefile.bor -DMODEL=l"
-#
-# ------------ Borland C++ ------------
-
-### Absolutely necessary for this makefile to work
-.AUTODEPEND
-
-## Where zlib.h, zconf.h and zlib_MODEL.lib are
-ZLIB_DIR=..\zlib
-
-## Compiler, linker and lib stuff
-CC=bcc
-LD=bcc
-LIB=tlib
-
-!ifndef MODEL
-MODEL=l
-!endif
-
-MODEL_ARG=-m$(MODEL)
-
-#TARGET_CPU=3
-# 2 = 286, 3 = 386, etc.
-!ifndef TARGET_CPU
-TARGET_CPU=2
-!endif
-
-# Use this if you don't want Borland's fancy exception handling
-# (for Borland C++ 4.0 or later)
-#NOEHLIB=noeh$(MODEL).lib
-
-!ifdef DEBUG
-CDEBUG=-v
-LDEBUG=-v
-!else
-CDEBUG=
-LDEBUG=
-!endif
-
-# STACKOFLOW=1
-!ifdef STACKOFLOW
-CDEBUG=$(CDEBUG) -N
-LDEBUG=$(LDEBUG) -N
-!endif
-
-# -X- turn on dependency generation in the object file
-# -w set all warnings on
-# -O2 optimize for speed
-# -Z global optimization
-CFLAGS=-O2 -Z -X- -w -I$(ZLIB_DIR) -$(TARGET_CPU) $(MODEL_ARG) $(CDEBUG)
-
-# -M generate map file
-LDFLAGS=-M -L$(ZLIB_DIR) $(MODEL_ARG) $(LDEBUG)
-
-## Variables
-
-OBJS = \
- png.obj \
- pngerror.obj \
- pngget.obj \
- pngmem.obj \
- pngpread.obj \
- pngread.obj \
- pngrio.obj \
- pngrtran.obj \
- pngrutil.obj \
- pngset.obj \
- pngtrans.obj \
- pngwio.obj \
- pngwrite.obj \
- pngwtran.obj \
- pngwutil.obj
-
-LIBOBJS = \
- +png.obj \
- +pngerror.obj \
- +pngget.obj \
- +pngmem.obj \
- +pngpread.obj \
- +pngread.obj \
- +pngrio.obj \
- +pngrtran.obj \
- +pngrutil.obj \
- +pngset.obj \
- +pngtrans.obj \
- +pngwio.obj \
- +pngwrite.obj \
- +pngwtran.obj \
- +pngwutil.obj
-
-LIBNAME=libpng$(MODEL).lib
-
-## Implicit rules
-
-# Braces let make "batch" calls to the compiler,
-# 2 calls instead of 12; space is important.
-.c.obj:
- $(CC) $(CFLAGS) -c {$*.c }
-
-.c.exe:
- $(CC) $(CFLAGS) $(LDFLAGS) $*.c $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
-
-## Major targets
-
-all: libpng pngtest
-
-# try !inlude scripts\pnglibconf.mak for more options
-pnglibconf.h: scripts\pnglibconf.h.prebuilt
- copy scripts\pnglibconf.h.prebuilt $@
-
-libpng: $(LIBNAME)
-
-pngtest: pngtest$(MODEL).exe
-
-test: pngtest$(MODEL).exe
- pngtest$(MODEL)
-
-## Minor Targets
-
-png.obj: png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.obj: pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.obj: pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.obj: pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.obj: pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.obj: pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.obj: pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.obj: pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.obj: pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.obj: pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.obj: pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.obj: pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.obj: pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.obj: pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.obj: pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-$(LIBNAME): $(OBJS)
- -del $(LIBNAME)
- $(LIB) $(LIBNAME) @&&|
-$(LIBOBJS), libpng$(MODEL)
-|
-
-pngtest$(MODEL).obj: pngtest.c png.h pngconf.h pnglibconf.h
- $(CC) $(CFLAGS) -opngtest$(MODEL) -c pngtest.c
-
-pngtest$(MODEL).exe: pngtest$(MODEL).obj
- $(LD) $(LDFLAGS) pngtest$(MODEL).obj $(LIBNAME) zlib_$(MODEL).lib $(NOEHLIB)
-
-# Clean up anything else you want
-clean:
- -del pnglibconf.h
- -del *.obj
- -del *.exe
- -del *.lib
- -del *.lst
- -del *.map
-
-# End of makefile for libpng
+++ /dev/null
-# Makefile for creating Windows CE release archives, with the
-# mingw32ce compiler.
-
-# Last updated: 22-Jul-2008
-
-# Copyright (C) 2008 Vincent Torri
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# To get some help, type
-#
-# make help
-#
-# To create the archives
-#
-# make
-#
-# To remove everything, type:
-#
-# make clean
-
-VERMAJ = 1
-VERMIN = 6
-VERMIC = 3
-VER = $(VERMAJ).$(VERMIN).$(VERMIC)
-NAME = libpng
-PACKAGE = $(NAME)-$(VER)
-
-BIN = libpng16-0.dll
-LIB = libpng16.a libpng16.dll.a libpng.a libpng.dll.a
-INCLUDE = png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-PC = libpng16.pc libpng.pc
-
-MANIFESTVERBIN = "Libpng-$(VER): Binary files"
-MANIFESTVERDEV = "Libpng-$(VER): Developer files"
-MANIFESTVERDESC = "Libpng: the official PNG reference library"
-
-all: $(NAME)
-
-$(NAME): remove-old copy-src compilation copy manifest archive
- @echo " * Removal of the directories"
- @rm -rf $(PACKAGE)/ $(PACKAGE)-bin/ $(PACKAGE)-dev/
-
-remove-old:
- @echo " * Removal of the old files"
- @rm -rf $(PACKAGE)-bin*
- @rm -rf $(PACKAGE)-dev*
-
-copy-src:
- @echo " * Copy of source files"
- @cp -R ../src/$(PACKAGE) .
- @echo " * Creation of directories and files"
- @mkdir -p $(PACKAGE)-bin/bin
- @mkdir -p $(PACKAGE)-bin/manifest
- @mkdir -p $(PACKAGE)-dev/lib/pkgconfig
- @mkdir -p $(PACKAGE)-dev/include/$(NAME)$(VERMAJ)$(VERMIN)
- @mkdir -p $(PACKAGE)-dev/manifest
- @touch $(PACKAGE)-bin/manifest/$(PACKAGE)-bin.mft
- @touch $(PACKAGE)-bin/manifest/$(PACKAGE)-bin.ver
- @touch $(PACKAGE)-dev/manifest/$(PACKAGE)-dev.mft
- @touch $(PACKAGE)-dev/manifest/$(PACKAGE)-dev.ver
-
-compilation:
- @echo " * Compilation of $(PACKAGE)"
- cd $(PACKAGE) && CPPFLAGS="$(CPPFLAGS) -DPNG_CONSOLE_IO_SUPPORTED -D_WIN32_WCE=0x0420" \
- CFLAGS="$(CFLAGS) -mms-bitfields -O3 -pipe -fomit-frame-pointer" \
- LDFLAGS="$(LDFLAGS) -Wl,--enable-auto-import -Wl,-s" \
- ./configure --prefix=/opt/wince --host=arm-mingw32ce && make
-
-copy:
- @echo " * Copy of binary and development files"
- @for i in $(BIN); do \
- cp $(PACKAGE)/.libs/$$i $(PACKAGE)-bin/bin; \
- done
- @for i in $(LIB); do \
- cp $(PACKAGE)/.libs/$$i $(PACKAGE)-dev/lib; \
- done
- @for i in $(INCLUDE); do \
- cp $(PACKAGE)/$$i $(PACKAGE)-dev/include/$(NAME)$(VERMAJ)$(VERMIN); \
- done
- @for i in $(PC); do \
- cp $(PACKAGE)/$$i $(PACKAGE)-dev/lib/pkgconfig; \
- done
-
-manifest:
- @echo " * Creation of the manifest"
- @cd $(PACKAGE)-bin && find * >> manifest/$(PACKAGE)-bin.mft
- @cd $(PACKAGE)-bin && \
- echo $(MANIFESTVERBIN) >> manifest/$(PACKAGE)-bin.ver && \
- echo $(MANIFESTVERDESC) >> manifest/$(PACKAGE)-bin.ver
- @cd $(PACKAGE)-dev && find * >> manifest/$(PACKAGE)-dev.mft
- @cd $(PACKAGE)-dev && \
- echo $(MANIFESTVERDEV) >> manifest/$(PACKAGE)-dev.ver && \
- echo $(MANIFESTVERDESC) >> manifest/$(PACKAGE)-dev.ver
-
-archive:
- @echo " * Creation of the archives"
- @tar cf $(PACKAGE)-bin.tar $(PACKAGE)-bin
- @bzip2 -9 $(PACKAGE)-bin.tar
- @tar cf $(PACKAGE)-dev.tar $(PACKAGE)-dev
- @bzip2 -9 $(PACKAGE)-dev.tar
-
-clean:
- @echo " * Cleaning"
- @rm -rf $(PACKAGE)*
-
-help:
- @echo
- @echo "To create the archives, type:"
- @echo " make"
- @echo
- @echo "To remove everything, type:"
- @echo " make clean"
- @echo
+++ /dev/null
-# makefile for libpng on Darwin / Mac OS X
-# Copyright (C) 2002, 2004, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 2001 Christoph Pfisterer
-# derived from makefile.linux:
-# Copyright (C) 1998, 1999 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# where "make install" puts libpng.a, libpng16.dylib, png.h, pngconf.h,
-# and pnglibconf.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-ZLIBLIB=/usr/lib
-ZLIBINC=/usr/include
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).dylib
-LIBSOMAJ=$(LIBNAME).$(PNGMAJ).dylib
-LIBSOREL=$(LIBNAME).$(PNGMAJ).$(RELEASE).dylib
-OLDSO=libpng.dylib
-
-# Utilities:
-CC=cc
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-ARCH=-arch ppc -arch i386 -arch x86_64
-
-# CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops
-CFLAGS=-I$(ZLIBINC) -W -Wall -O -funroll-loops $(ARCH)
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng16 -lz $(ARCH)
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -fno-common -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(CC) -dynamiclib \
- -install_name $(LIBPATH)/$(LIBSOMAJ) \
- -current_version 16 -compatibility_version 16 \
- $(ARCH) -o $(LIBSOMAJ) \
- $(OBJSDLL) -L$(ZLIBLIB) -lz
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- $(RANLIB) $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOMAJ)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)
- chmod 755 $(DL)/$(LIBSOMAJ)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- $(CC) $(CFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
- libpng.pc $(LIBNAME).*dylib pngtesti pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng on DEC Alpha Unix
-# Copyright (C) 2000-2002, 2006, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-PNGMAJ = 16
-LIBNAME = libpng16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=cc
-MKDIR_P=mkdir
-LN_SF=ln -f -s
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-# Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-CFLAGS=-std -w1 -I$(ZLIBINC) -O # -g -DPNG_DEBUG=1
-LDFLAGS=-L$(ZLIBLIB) -rpath $(ZLIBLIB) libpng.a -lz -lm
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: $(LIBSO) libpng.a pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo ccopts=\"-std\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJS)
- $(CC) -shared -o $@ $(OBJS) -L$(ZLIBLIB) \
- -soname $(LIBSOMAJ)
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@/bin/rm -f $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@/bin/rm -f $(DI)/libpng
- (cd $(DI); $(LN_SF)(LIBNAME) libpng; $(LN_SF)(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@/bin/rm -f $(DL)/libpng.a
- (cd $(DL); $(LN_SF)(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@/bin/rm -f $(DM)/man3/libpng.3
- -@/bin/rm -f $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@/bin/rm -f $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@/bin/rm -f $(DB)/libpng-config
- -@/bin/rm -f $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF)(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -w1 -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -w1 -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) -R$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- /bin/rm -f *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# DJGPP (DOS gcc) makefile for libpng
-# Copyright (C) 2002, 2006, 2009-2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# where make install will put libpng.a and png.h
-#prefix=/usr/local
-prefix=.
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-CC=gcc
-CFLAGS=-I../zlib -O -DPNG_NO_SNPRINTF
-LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
-
-RANLIB=ranlib
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o pngwtran.o \
- pngmem.o pngerror.o pngpread.o
-
-all: libpng.a pngtest
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- ar rc $@ $(OBJS)
- $(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
- coff2exe pngtest
-
-test: pngtest
- ./pngtest
-clean:
- rm -f *.o libpng.a pngtest pngout.png pnglibconf.h
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng.a and libpng16.so on Linux ELF with gcc
-# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs
-# and Glenn Randers-Pehrson
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Modified for Debian by Junichi Uekawa and Josselin Mouette
-# Major modifications are:
-# * link libpng explicitly with libz and libm
-# * $(OLDSO).16 is a symlink rather than a different library
-# * versioned symbols
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-OLDSOMAJ=libpng.so.16
-
-# Utilities:
-AR_RC=ar rc
-CC=gcc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-# where "make install" puts libpng16.a, libpng16.so*,
-# libpng16/png.h, libpng16/pngconf.h, and libpng16/pnglibconf.h
-# Prefix must be a full pathname.
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located.
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-# ZLIBLIB=../zlib
-# ZLIBINC=../zlib
-
-ALIGN=
-# for i386:
-#ALIGN=-malign-loops=2 -malign-functions=2
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-
-# for pgcc version 2.95.1, -O3 is buggy; don't use it.
-
-CFLAGS=-W -Wall -D_REENTRANT -O2 \
- $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-
-LDFLAGS=-L. -lpng16
-LDFLAGS_A=libpng.a -lz -lm
-LIBADDFLAGS=-lz -lm
-
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest pngtest-static libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng.syms: png.h pngconf.h pnglibconf.h
- $(CC) $(CFLAGS) -E -DPNG_BUILDSYMS -DPNG_INTERNAL png.h |\
- awk -F '[\t [\\]();]' -v PNGMAJ=$(PNGMAJ) 'BEGIN{printf("PNG16_%s {global:\n",PNGMAJ)}\
- { for (i=1;i+2<=NF;++i)\
- if ($$(i)=="PNG_FUNCTION_EXPORT" && $$(i+2)=="END")\
- print $$(i+1) ";";\
- for (i=1;i+1<=NF;++i)\
- if ($$(i)=="PNG_DATA_EXPORT")\
- print $$(i+1) ";";}\
- END{print "local: *; };"}' >$@.new
- $(RM_F) $@
- mv $@.new $@
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"\"; \
- echo R_opts=\"\"; \
- echo libs=\"-lpng16\"; \
- echo all_libs=\"-lpng16 $(LIBADDFLAGS)\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL) libpng.syms
- $(CC) -shared -Wl,-soname,$(LIBSOMAJ) \
- -Wl,-version-script,libpng.syms \
- -o $(LIBSOMAJ) \
- $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-pngtest-static: pngtest.o libpng.a
- $(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)
-
-test: pngtest pngtest-static
- @echo ""
- @echo " Running pngtest dynamically linked with $(LIBSO):"
- @echo ""
- LD_LIBRARY_PATH=".:${LD_LIBRARY_PATH}" ./pngtest
- @echo ""
- @echo " Running pngtest statically linked with libpng.a:"
- @echo ""
- ./pngtest-static
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) -Wl, -rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a libpng.syms pngtest pngout.png libpng-config \
- $(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng under FreeBSD
-# Copyright (C) 2002, 2007, 2009 Glenn Randers-Pehrson and Andrey A. Chernov
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-PREFIX?= /usr/local
-SHLIB_VER?= 16
-
-LIB= png
-SHLIB_MAJOR= ${SHLIB_VER}
-SHLIB_MINOR= 0
-NO_PROFILE= YES
-NO_OBJ= YES
-
-# where make install puts libpng.a and png.h
-DESTDIR= ${PREFIX}
-LIBDIR= /lib
-INCS= png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-INCSDIR= /include/libpng
-INCDIR= ${INCSDIR} # for 4.x bsd.lib.mk
-MAN= libpng.3 libpngpf.3 png.5
-MANDIR= /man/man
-SYMLINKS= libpng/png.h ${INCSDIR}/../png.h \
- libpng/pngconf.h ${INCSDIR}/../pngconf.h \
- libpng/pnglibconf.h ${INCSDIR}/../pnglibconf.h
-
-# where make install finds libz.a and zlib.h
-ZLIBLIB= /usr/lib
-ZLIBINC= /usr/include
-
-LDADD+= -lm -lz
-#LDADD+= -lm -lz -lssp_nonshared # for OSVERSION < 800000 ?
-
-DPADD+= ${LIBM} ${LIBZ}
-
-CFLAGS+= -I. -I${ZLIBINC}
-
-SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
- pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
- pngwtran.c pngmem.c pngerror.c pngpread.c
-
-pngtest: pngtest.o libpng.a
- ${CC} ${CFLAGS} -L. -static -o pngtest pngtest.o -L${ZLIBLIB} \
- -lpng ${LDADD}
-
-CLEANFILES= pngtest pngtest.o pngout.png
-
-test: pngtest
- ./pngtest
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-.include <bsd.lib.mk>
+++ /dev/null
-# makefile for libpng using gcc (generic, static library)
-# Copyright (C) 2008 Glenn Randers-Pehrson
-# Copyright (C) 2000 Cosmin Truta
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Location of the zlib library and include files
-ZLIBINC = ../zlib
-ZLIBLIB = ../zlib
-
-# Compiler, linker, lib and other tools
-CC = gcc
-LD = $(CC)
-AR_RC = ar rcs
-RANLIB = ranlib
-RM_F = rm -f
-
-CDEBUG = -g -DPNG_DEBUG=5
-LDDEBUG =
-CRELEASE = -O2
-LDRELEASE = -s
-#CFLAGS = -W -Wall $(CDEBUG)
-CFLAGS = -W -Wall $(CRELEASE)
-#LDFLAGS = $(LDDEBUG)
-LDFLAGS = $(LDRELEASE)
-LIBS = -lz -lm
-
-# File extensions
-O=.o
-A=.a
-EXE=
-
-# Variables
-OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
- pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
- pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-
-# Targets
-all: static
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-.c$(O):
- $(CC) -c $(CFLAGS) -I$(ZLIBINC) $<
-
-static: libpng$(A) pngtest$(EXE)
-
-shared:
- @echo This is a generic makefile that cannot create shared libraries.
- @echo Please use a configuration that is specific to your platform.
- @false
-
-libpng$(A): $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-test: pngtest$(EXE)
- ./pngtest$(EXE)
-
-pngtest$(EXE): pngtest$(O) libpng$(A)
- $(LD) $(LDFLAGS) -L$(ZLIBLIB) -o $@ pngtest$(O) libpng$(A) $(LIBS)
-
-clean:
- $(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png pnglibconf.h
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
-# Copyright (C) 1999-2002, 2006, 2009, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42
-# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Where the zlib library and include files are located
-ZLIBLIB=/opt/zlib/lib
-ZLIBINC=/opt/zlib/include
-
-# Note that if you plan to build a libpng shared library, zlib must also
-# be a shared library, which zlib's configure does not do. After running
-# zlib's configure, edit the appropriate lines of makefile to read:
-# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
-# LDSHARED=ld -b
-# SHAREDLIB=libz.sl
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).sl
-LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.sl
-
-# Utilities:
-AR_RC=ar rc
-CC=cc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-CFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
--D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +Z -DHAVE_UNISTD_H -DUSE_MMAP
-# Caution: be sure you have built zlib with the same CFLAGS.
-CCFLAGS=-I$(ZLIBINC) -O -Ae -Wl,+vnocompatwarnings +DD64 \
--D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64 +Z -DHAVE_UNISTD_H -DUSE_MMAP
-
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
-
-# where make install puts libpng.a, libpng16.sl, and png.h
-prefix=/opt/libpng
-exec_prefix=$(prefix)
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) +z -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(LD) -b +s \
- +h $(LIBSOMAJ) -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) $(CCFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) $(CCFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng on HP-UX using GCC with the HP ANSI/C linker.
-# Copyright (C) 2002, 2006-2008, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 2001, Laurent faillie
-# Copyright (C) 1998, 1999 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).sl
-LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.sl
-
-# Utilities:
-CC=gcc
-LD=ld
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-# where "make install" puts libpng.a, $(OLDSO)*, png.h, pngconf.h
-# and pnglibconf.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-ZLIBLIB=/opt/zlib/lib
-ZLIBINC=/opt/zlib/include
-
-# Note that if you plan to build a libpng shared library, zlib must also
-# be a shared library, which zlib's configure does not do. After running
-# zlib's configure, edit the appropriate lines of makefile to read:
-# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
-# LDSHARED=ld -b
-# SHAREDLIB=libz.sl
-
-ALIGN=
-# for i386:
-#ALIGN=-malign-loops=2 -malign-functions=2
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-
-# for pgcc version 2.95.1, -O3 is buggy; don't use it.
-
-CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops -DPNG_NO_MMX_CODE \
- $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-#LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng16 -lz -lm
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(LD) -b +s \
- +h $(LIBSOMAJ) -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) -Wl,-rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng, HPUX (10.20 and 11.00) using the ANSI/C product.
-# Copyright (C) 1999-2002, 2006, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42
-# contributed by Jim Rice and updated by Chris Schleicher, Hewlett Packard
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Where the zlib library and include files are located
-ZLIBLIB=/opt/zlib/lib
-ZLIBINC=/opt/zlib/include
-
-# Note that if you plan to build a libpng shared library, zlib must also
-# be a shared library, which zlib's configure does not do. After running
-# zlib's configure, edit the appropriate lines of makefile to read:
-# CFLAGS=-O1 -DHAVE_UNISTD -DUSE_MAP -fPIC \
-# LDSHARED=ld -b
-# SHAREDLIB=libz.sl
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).sl
-LIBSOMAJ=$(LIBNAME).sl.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.sl
-
-# Utilities:
-AR_RC=ar rc
-CC=cc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-# where make install puts libpng.a, libpng16.sl, and png.h
-prefix=/opt/libpng
-exec_prefix=$(prefix)
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-CFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
-# Caution: be sure you have built zlib with the same CFLAGS.
-CCFLAGS=-I$(ZLIBINC) -O -Ae +DA1.1 +DS2.0
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) +z -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo ccopts=\"-Ae +DA1.1 +DS2.0\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(LD) -b +s \
- +h $(LIBSOMAJ) -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CCFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) $(CCFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) $(CCFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# Makefile for libpng (static)
-# IBM C version 3.x for Win32 and OS/2
-# Copyright (C) 2006 Glenn Randers-Pehrson
-# Copyright (C) 2000 Cosmin Truta
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# Notes:
-# Derived from makefile.std
-# All modules are compiled in C mode
-# Tested under Win32, expected to work under OS/2
-# Can be easily adapted for IBM VisualAge/C++ for AIX
-
-# Location of the zlib library and include files
-ZLIBINC = ../zlib
-ZLIBLIB = ../zlib
-
-# Compiler, linker, lib and other tools
-CC = icc
-LD = ilink
-AR = ilib
-RM = del
-
-CFLAGS = -I$(ZLIBINC) -Mc -O2 -W3
-LDFLAGS =
-
-# File extensions
-O=.obj
-A=.lib
-E=.exe
-
-# Variables
-OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
- pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
- pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-
-LIBS = libpng$(A) $(ZLIBLIB)/zlib$(A)
-
-# Targets
-all: libpng$(A) pngtest$(E)
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng$(A): $(OBJS)
- $(AR) -out:$@ $(OBJS)
-
-test: pngtest$(E)
- pngtest$(E)
-
-pngtest: pngtest$(E)
-
-pngtest$(E): pngtest$(O) libpng$(A)
- $(LD) $(LDFLAGS) pngtest$(O) $(LIBS)
-
-clean:
- $(RM) *$(O)
- $(RM) libpng$(A)
- $(RM) pnglibconf.h
- $(RM) pngtest$(E)
- $(RM) pngout.png
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
+++ /dev/null
-# Makefile for libpng
-# Microsoft Visual C++ with Intel C/C++ Compiler 4.0 and later
-
-# Copyright (C) 2006 Glenn Randers-Pehrson
-# Copyright (C) 2000, Pawel Mrochen, based on makefile.msc which is
-# copyright 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# To use, do "nmake /f scripts\makefile.intel"
-#
-# ------------------- Intel C/C++ Compiler 4.0 and later -------------------
-
-# Where the zlib library and include files are located
-ZLIBLIB=..\zlib
-ZLIBINC=..\zlib
-
-# Target CPU
-CPU=6 # Pentium II
-#CPU=5 # Pentium
-
-# Calling convention
-CALLING=r # __fastcall
-#CALLING=z # __stdcall
-#CALLING=d # __cdecl
-
-# Uncomment next to put error messages in a file
-#ERRFILE=>>pngerrs
-
-# --------------------------------------------------------------------------
-
-CC=icl -c
-CFLAGS=-O2 -G$(CPU)$(CALLING) -Qip -Qunroll4 -I$(ZLIBINC) -nologo
-LD=link
-LDFLAGS=/SUBSYSTEM:CONSOLE /NOLOGO
-
-O=.obj
-
-OBJS=png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O) \
-pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O) \
-pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
-
-all: test
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-libpng.lib: $(OBJS)
- if exist libpng.lib del libpng.lib
- lib /NOLOGO /OUT:libpng.lib $(OBJS)
-
-pngtest.exe: pngtest.obj libpng.lib
- $(LD) $(LDFLAGS) /OUT:pngtest.exe pngtest.obj libpng.lib $(ZLIBLIB)\zlib.lib
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
- $(CC) $(CFLAGS) $*.c $(ERRFILE)
-
-test: pngtest.exe
- pngtest.exe
-
-
-# End of makefile for libpng
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 2002, 2006, 2009 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# This makefile requires the file ansi2knr.c, which you can get
-# from the Ghostscript ftp site at ftp://ftp.cs.wisc.edu/ghost/
-# If you have libjpeg, you probably already have ansi2knr.c in the jpeg
-# source distribution.
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-CC=cc
-CFLAGS=-I../zlib -O
-LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
-# flags for ansi2knr
-ANSI2KNRFLAGS=
-
-RANLIB=ranlib
-#RANLIB=echo
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: ansi2knr libpng.a pngtest
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-# general rule to allow ansi2knr to work
-.c.o:
- ./ansi2knr $*.c T$*.c
- $(CC) $(CFLAGS) -c T$*.c
- rm -f T$*.c $*.o
- mv T$*.o $*.o
-
-ansi2knr: ansi2knr.c
- $(CC) $(CFLAGS) $(ANSI2KNRFLAGS) -o ansi2knr ansi2knr.c
-
-libpng.a: ansi2knr $(OBJS)
- ar rc $@ $(OBJS)
- $(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install: libpng.a png.h pngconf.h pnglibconf.h
- -@mkdir $(DESTDIR)$(INCPATH)
- -@mkdir $(DESTDIR)$(INCPATH)/libpng
- -@mkdir $(DESTDIR)$(LIBPATH)
- -@rm -f $(DESTDIR)$(INCPATH)/png.h
- -@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
- cp png.h $(DESTDIR)$(INCPATH)/libpng
- cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
- cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
- (cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
- cp libpng.a $(DESTDIR)$(LIBPATH)
- chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
-
-clean:
- rm -f *.o libpng.a pngtest pngout.png ansi2knr pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng.a and libpng16.so on Linux ELF with gcc
-# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs and
-# Glenn Randers-Pehrson
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-RELEASE = 3
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=gcc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-# where "make install" puts libpng16.a, libpng16.so*,
-# libpng16/png.h, libpng16/pngconf.h, and libpng16/pnglibconf.h
-# Prefix must be a full pathname.
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located.
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-ALIGN=
-# for i386:
-#ALIGN=-malign-loops=2 -malign-functions=2
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-
-# for pgcc version 2.95.1, -O3 is buggy; don't use it.
-
-CFLAGS=-I$(ZLIBINC) -W -Wall -O3 -funroll-loops \
- $(ALIGN) # $(WARNMORE) -g -DPNG_DEBUG=5
-
-LDFLAGS=-L. -Wl,-rpath,. -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) -lpng16 -lz -lm
-LDFLAGS_A=-L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) libpng.a -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest pngtest-static libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-pngtest-static: pngtest.o libpng.a
- $(CC) -o pngtest-static $(CFLAGS) pngtest.o $(LDFLAGS_A)
-
-test: pngtest pngtest-static
- @echo ""
- @echo " Running pngtest dynamically linked with $(LIBSO):"
- @echo ""
- ./pngtest
- @echo ""
- @echo " Running pngtest statically linked with libpng.a:"
- @echo ""
- ./pngtest-static
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
-
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) -Wl, -rpath,$(DL) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) -Wl,-rpath,$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
- $(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng
-# Copyright (C) Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-CC=cc
-CFLAGS=-I../zlib -O -systype sysv -DSYSV -w -Dmips
-#CFLAGS=-O
-LDFLAGS=-L. -L../zlib/ -lpng -lz -lm
-
-#RANLIB=ranlib
-RANLIB=echo
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: libpng.a pngtest
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- ar rc $@ $(OBJS)
- $(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install: libpng.a
- -@mkdir $(DESTDIR)$(INCPATH)
- -@mkdir $(DESTDIR)$(INCPATH)/libpng
- -@mkdir $(DESTDIR)$(LIBPATH)
- -@rm -f $(DESTDIR)$(INCPATH)/png.h
- -@rm -f $(DESTDIR)$(INCPATH)/pngconf.h
- -@rm -f $(DESTDIR)$(INCPATH)/pnglibconf.h
- cp png.h $(DESTDIR)$(INCPATH)/libpng
- cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
- cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
- (cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
- cp libpng.a $(DESTDIR)$(LIBPATH)
- chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
-
-clean:
- rm -f *.o libpng.a pngtest pngout.png pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-# Copyright (C) 2006, 2009 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
-
-# -------- Microsoft C 5.1 and later, does not use assembler code --------
-MODEL=L
-CFLAGS=-Oait -Gs -nologo -W3 -A$(MODEL) -I..\zlib
-#-Ox generates bad code with MSC 5.1
-CC=cl
-LD=link
-LDFLAGS=/e/st:0x1500/noe
-O=.obj
-
-#uncomment next to put error messages in a file
-ERRFILE= >> pngerrs
-
-# variables
-OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
-OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
-OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
-
-all: libpng.lib
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-libpng.lib: $(OBJS1) $(OBJS2) $(OBJS3)
- del libpng.lib
- lib libpng $(OBJS1);
- lib libpng $(OBJS2);
- lib libpng $(OBJS3);
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngtest.exe: pngtest.obj libpng.lib
- $(LD) $(LDFLAGS) pngtest.obj,,,libpng.lib ..\zlib\zlib.lib ;
-
-test: pngtest.exe
- pngtest
-
-# End of makefile for libpng
-
+++ /dev/null
-# makefile for libpng using MSYS/gcc (shared, static library)
-# Copyright (C) 2012 Glenn Randers-Pehrson and Christopher M. Wheeler
-#
-# Portions taken from makefile.linux:
-# Copyright (C) 1998, 1999, 2002, 2006, 2008, 2010-2011 Greg Roelofs and
-# Glenn Randers-Pehrson
-# Copyright (C) 2000 Cosmin Truta
-# Copyright (C) 1996, 1997 Andreas Dilger
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-# # # # # # # # # # # # # # # # #
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-RELEASE = 3
-
-# Shared library names:
-LIBSO=$(LIBNAME).dll
-LIBSOMAJ=$(LIBNAME).dll.$(PNGMAJ)
-LIBSOREL=$(PNGMAJ).$(RELEASE)
-OLDSO=libpng.dll
-
-# Where the zlib library and include files are located.
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-
-# Compiler, linker, lib and other tools
-CC = gcc
-LD = $(CC)
-AR_RC = ar rcs
-RANLIB = ranlib
-RM_F = rm -rf
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-
-#ARCH = -march=pentium3
-#ARCH = -march=i686
-ARCH =
-CDEBUG = -g -DPNG_DEBUG=5
-LDDEBUG =
-CRELEASE = -O2
-LDRELEASE = -s
-#CFLAGS = -W -Wall $(CDEBUG)
-CFLAGS = -W -Wall $(CRELEASE) $(ARCH)
-#LDFLAGS = $(LDDEBUG)
-LDFLAGS = $(LDRELEASE)
-LIBS = -lz -lm
-
-# File extensions
-O=.o
-A=.a
-EXE=.exe
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-# Variables
-OBJS = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O) \
- pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O) \
- pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-
-# Targets
-all: static shared
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-.c$(O):
- $(CC) -c $(CFLAGS) -I$(ZLIBINC) $<
-
-static: libpng$(A) pngtest$(EXE)
-
-shared: $(LIBSOMAJ)
- $(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSO)
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ):
- $(CC) -shared -Wl,-soname,$(LIBSOMAJ) -o $(LIBSOMAJ)
-
-libpng$(A): $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-Wl,-rpath,$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSO) $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
-
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-test: pngtest$(EXE)
- ./pngtest$(EXE)
-
-pngtest$(EXE): pngtest$(O) libpng$(A)
- $(LD) $(LDFLAGS) -L$(ZLIBLIB) -o $@ pngtest$(O) libpng$(A) $(LIBS)
-
-clean:
- $(RM_F) *$(O) libpng$(A) pngtest$(EXE) pngout.png pnglibconf.h $(LIBSO) \
- $(LIBSOMAJ) libpng-config
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng for NetBSD for the standard
-# make obj && make depend && make && make test
-# make includes && make install
-# Copyright (C) 2002 Patrick R.L. Welche
-# Copyright (C) 2007, 2009 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# You should also run makefile.netbsd
-
-LOCALBASE?=/usr/local
-LIBDIR= ${LOCALBASE}/lib
-MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include/libpng16
-
-LIB= png16
-SHLIB_MAJOR= 0
-SHLIB_MINOR= 1.6.3
-SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
- pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
- pngwtran.c pngmem.c pngerror.c pngpread.c
-INCS= png.h pngconf.h pnglibconf.h
-MAN= libpng.3 libpngpf.3 png.5
-
-CPPFLAGS+=-I${.CURDIR}
-
-# We should be able to do something like this instead of the manual
-# uncommenting, but it core dumps for me at the moment:
-# .if ${MACHINE_ARCH} == "i386"
-# MKLINT= no
-# .endif
-
-CLEANFILES+=pngtest.o pngtest pnglibconf.h
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-pngtest.o: pngtest.c
- ${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
-
-pngtest: pngtest.o libpng.a
- ${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
-
-test: pngtest
- cd ${.CURDIR} && ${.OBJDIR}/pngtest
-
-.include <bsd.lib.mk>
+++ /dev/null
-# makefile for libpng for NetBSD for the standard
-# make obj && make depend && make && make test
-# make includes && make install
-# Copyright (C) 2002 Patrick R.L. Welche
-# Copyright (C) 2007-2009 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# You should also run makefile.ne16bsd
-
-LOCALBASE?=/usr/local
-LIBDIR= ${LOCALBASE}/lib
-MANDIR= ${LOCALBASE}/man
-INCSDIR=${LOCALBASE}/include
-
-LIB= png
-SHLIB_MAJOR= 16
-SHLIB_MINOR= 1.6.3
-SRCS= png.c pngset.c pngget.c pngrutil.c pngtrans.c pngwutil.c \
- pngread.c pngrio.c pngwio.c pngwrite.c pngrtran.c \
- pngwtran.c pngmem.c pngerror.c pngpread.c
-INCS= png.h pngconf.h pnglibconf.h
-MAN= libpng.3 libpngpf.3 png.5
-
-CPPFLAGS+=-I${.CURDIR}
-
-# We should be able to do something like this instead of the manual
-# uncommenting, but it core dumps for me at the moment:
-# .if ${MACHINE_ARCH} == "i386"
-# MKLINT= no
-# .endif
-
-CLEANFILES+=pngtest.o pngtest pnglibconf.h
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-pngtest.o: pngtest.c
- ${CC} -c ${CPPFLAGS} ${CFLAGS} ${.ALLSRC} -o ${.TARGET}
-
-pngtest: pngtest.o libpng.a
- ${CC} ${LDFLAGS} ${.ALLSRC} -o${.TARGET} -lz -lm
-
-test: pngtest
- cd ${.CURDIR} && ${.OBJDIR}/pngtest
-
-.include <bsd.lib.mk>
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-# Copyright (C) 2007-2009 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-PREFIX?= /usr/local
-LIBDIR= ${PREFIX}/lib
-MANDIR= ${PREFIX}/man/cat
-
-SHLIB_MAJOR= 16
-SHLIB_MINOR= 1.6.3
-
-LIB= png
-SRCS= png.c pngerror.c pngget.c pngmem.c pngpread.c \
- pngread.c pngrio.c pngrtran.c pngrutil.c pngset.c pngtrans.c \
- pngwio.c pngwrite.c pngwtran.c pngwutil.c
-
-HDRS= png.h pngconf.h pnglibconf.h
-
-CFLAGS+= -W -Wall
-CPPFLAGS+= -I${.CURDIR}
-
-NOPROFILE= Yes
-
-CLEANFILES+= pngtest.o pngtest pnglibconf.h
-
-MAN= libpng.3 libpngpf.3 png.5
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO \
- libpng-manual.txt
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-pngtest.o: pngtest.c
- ${CC} ${CPPFLAGS} ${CFLAGS} -c ${.ALLSRC} -o ${.TARGET}
-
-pngtest: pngtest.o
- ${CC} ${LDFLAGS} ${.ALLSRC} -o ${.TARGET} -L${.OBJDIR} -lpng -lz -lm
-
-test: pngtest
- cd ${.OBJDIR} && env \
- LD_LIBRARY_PATH="${.OBJDIR}" ${.OBJDIR}/pngtest
-
-beforeinstall:
- if [ ! -d ${DESTDIR}${PREFIX}/include/libpng ]; then \
- ${INSTALL} -d -o root -g wheel ${DESTDIR}${PREFIX}/include; \
- fi
- if [ ! -d ${DESTDIR}${LIBDIR} ]; then \
- ${INSTALL} -d -o root -g wheel ${DESTDIR}${LIBDIR}; \
- fi
- if [ ! -d ${DESTDIR}${LIBDIR}/debug ]; then \
- ${INSTALL} -d -o root -g wheel ${DESTDIR}${LIBDIR}/debug; \
- fi
- if [ ! -d ${DESTDIR}${MANDIR}3 ]; then \
- ${INSTALL} -d -o root -g wheel ${DESTDIR}${MANDIR}3; \
- fi
- if [ ! -d ${DESTDIR}${MANDIR}5 ]; then \
- ${INSTALL} -d -o root -g wheel ${DESTDIR}${MANDIR}5; \
- fi
- if [ ! -d ${DESTDIR}${PREFIX}/share/doc/png ]; then \
- ${INSTALL} -d -o root -g wheel ${DESTDIR}${PREFIX}/share/doc/png; \
- fi
-
-afterinstall:
- @rm -f ${DESTDIR}${LIBDIR}/libpng_pic.a
- @rm -f ${DESTDIR}${LIBDIR}/debug/libpng.a
- @rm -f ${DESTDIR}${PREFIX}/include/png.h
- @rm -f ${DESTDIR}${PREFIX}/include/pngconf.h
- @rm -f ${DESTDIR}${PREFIX}/include/pnglibconf.h
- @rmdir ${DESTDIR}${LIBDIR}/debug 2>/dev/null || true
- ${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
- -m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include
- ${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
- -m ${NONBINMODE} ${HDRS} ${DESTDIR}${PREFIX}/include
- ${INSTALL} ${INSTALL_COPY} -o ${SHAREOWN} -g ${SHAREGRP} \
- -m ${NONBINMODE} ${DOCS} ${DESTDIR}${PREFIX}/share/doc/png
-
-.include <bsd.lib.mk>
+++ /dev/null
-# makefile for SCO OSr5 ELF and Unixware 7 with Native cc
-# Contributed by Mike Hopkirk (hops@sco.com) modified from Makefile.lnx
-# force ELF build dynamic linking, SONAME setting in lib and RPATH in app
-# Copyright (C) 2002, 2006, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1998 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-CC=cc
-AR_RC=ar rc
-MKDIR_P=mkdir
-LN_SF=ln -f -s
-RANLIB=echo
-RM_F=/bin/rm -f
-
-# where make install puts libpng.a, $(OLDSO)*, and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-CFLAGS= -dy -belf -I$(ZLIBINC) -O3
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo ccopts=\"-belf\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- $(CC) -G -Wl,-h,$(LIBSOMAJ) -o $(LIBSOMAJ) \
- $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- LD_RUN_PATH=.:$(ZLIBLIB) $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- -@$(RM_F) $(DI)/png.h
- -@$(RM_F) $(DI)/pngconf.h
- -@$(RM_F) $(DI)/pnglibconf.h
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) $(CFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- $(CC) $(CFLAGS) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngout.png libpng-config \
- $(LIBSO) $(LIBSOMAJ)* pngtest-static pngtesti \
- pnglibconf.h libpng.pc
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng.a and libpng16.so, SGI IRIX with 'cc'
-# Copyright (C) 2001-2002, 2006, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME=libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=gcc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=echo
-RM_F=/bin/rm -f
-
-# Where make install puts libpng.a, libpng16.so, and libpng16/png.h
-# Prefix must be a full pathname.
-
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib32
-#ZLIBINC=/usr/local/include
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-# ABI can be blank to use default for your system, -32, -o32, -n32, or -64
-# See "man abi". zlib must be built with the same ABI.
-ABI=
-
-WARNMORE= # -g -DPNG_DEBUG=5
-CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE) -fPIC -mabi=n32
-LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
-LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
- -set_version sgi$(PNGMAJ).0
-# See "man dso" for info about shared objects
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-#LIBPATH=$(exec_prefix)/lib32
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: libpng.a pngtest shared libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-shared: $(LIBSOMAJ)
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo ccopts=\"$(ABI)\"; \
- echo cppflags=\"\"; \
- echo ldopts=\"$(ABI)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libdir=\"$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJS)
- $(LDSHARED) -o $@ $(OBJS)
- $(RM_F) $(LIBSO) $(LIBSOMAJ)
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- echo
- echo Testing local static library.
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):$(DL) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) libpng.a pngtest pngtesti pngout.png libpng.pc \
- so_locations libpng-config $(LIBSO) $(LIBSOMAJ)* pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng.a and libpng16.so, SGI IRIX with 'cc'
-# Copyright (C) 2001-2002, 2006, 2007, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME=libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=cc
-MKDIR_P=mkdir -p
-LN_SF=ln -sf
-RANLIB=echo
-RM_F=/bin/rm -f
-
-# Where make install puts libpng.a, libpng16.so, and libpng16/png.h
-# Prefix must be a full pathname.
-
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib32
-#ZLIBINC=/usr/local/include
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-# ABI can be blank to use default for your system, -32, -o32, -n32, or -64
-# See "man abi". zlib must be built with the same ABI.
-ABI=
-
-WARNMORE=-fullwarn
-# Note: -KPIC is the default anyhow
-#CFLAGS= $(ABI) -I$(ZLIBINC) -O $(WARNMORE) -KPIC # -g -DPNG_DEBUG=5
-CFLAGS=$(ABI) -I$(ZLIBINC) -O $(WARNMORE)
-LDFLAGS_A=$(ABI) -L. -L$(ZLIBLIB) -lpng16 -lz -lm
-LDFLAGS=$(ABI) -L. -L$(ZLIBLIB) -lpng -lz -lm
-LDSHARED=cc $(ABI) -shared -soname $(LIBSOMAJ) \
- -set_version sgi$(PNGMAJ).0
-# See "man dso" for info about shared objects
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-#LIBPATH=$(exec_prefix)/lib32
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: libpng.a pngtest shared libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo ccopts=\"$(ABI)\"; \
- echo ldopts=\"$(ABI)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo libdir=\"$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJS)
- $(LDSHARED) -o $@ $(OBJS)
- $(RM_F) $(LIBSO) $(LIBSOMAJ)
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- echo
- echo Testing local static library.
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(DL) -L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):$(DL) \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -L$(ZLIBLIB) \
- -rpath $(ZLIBLIB):`$(BINPATH)/$(LIBNAME)-config --libdir` \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags`
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png libpng.pc libpng-config \
- $(LIBSO) $(LIBSOMAJ)* \
- so_locations pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng on Solaris 9 (beta) with Forte cc
-# Updated by Chad Schrock for Solaris 9
-# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 2002, 2006, 2008, 2010-2011 Glenn Randers-Pehrson
-# Copyright (C) 1998-2001 Greg Roelofs
-# Copyright (C) 1996-1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-PNGMAJ = 16
-LIBNAME = libpng16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-# gcc 2.95 doesn't work.
-CC=cc
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=echo
-RM_F=/bin/rm -f
-
-# Where make install puts libpng.a, $(OLDSO)*, and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-# Changing these to ../zlib poses a security risk. If you want
-# to have zlib in an adjacent directory, specify the full path instead of "..".
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-#Use the preinstalled zlib that comes with Solaris 9:
-ZLIBLIB=/usr/lib
-ZLIBINC=/usr/include
-
-#WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-#CFLAGS=-I$(ZLIBINC) -W -Wall -O3 $(WARNMORE) -g -DPNG_DEBUG=5 -DPNG_NO_MMX_CODE
-CFLAGS=-I$(ZLIBINC) -O3 -DPNG_NO_MMX_CODE
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -KPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-R$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- @case "`type ld`" in *ucb*) \
- echo; \
- echo '## WARNING:'; \
- echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
- echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
- echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
- echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
- echo '## at all. If it is, things are likely to break because of'; \
- echo '## the libucb dependency that is created.'; \
- echo; \
- ;; \
- esac
- $(LD) -G -h $(LIBSOMAJ) \
- -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng on Solaris 2.x with gcc
-# Copyright (C) 2004, 2006-2008, 2010-2011 Glenn Randers-Pehrson
-# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 1998 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=gcc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=echo
-RM_F=/bin/rm -f
-
-# Where make install puts libpng.a, libpng16.so*, and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-# Changing these to ../zlib poses a security risk. If you want
-# to have zlib in an adjacent directory, specify the full path instead of "..".
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) -W -Wall -O \
- # $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo cppflags=\"\"; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-R$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- @case "`type ld`" in *ucb*) \
- echo; \
- echo '## WARNING:'; \
- echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
- echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
- echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
- echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
- echo '## at all. If it is, things are likely to break because of'; \
- echo '## the libucb dependency that is created.'; \
- echo; \
- ;; \
- esac
- $(LD) -G -h $(LIBSOMAJ) \
- -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng on Solaris 2.x with gcc
-# Copyright (C) 2004, 2006-2008, 2010-2011 Glenn Randers-Pehrson
-# Contributed by William L. Sebok, based on makefile.linux
-# Copyright (C) 1998 Greg Roelofs
-# Copyright (C) 1996, 1997 Andreas Dilger
-
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# Library name:
-LIBNAME = libpng16
-PNGMAJ = 16
-
-# Shared library names:
-LIBSO=$(LIBNAME).so
-LIBSOMAJ=$(LIBNAME).so.$(PNGMAJ)
-LIBSOREL=$(LIBSOMAJ).$(RELEASE)
-OLDSO=libpng.so
-
-# Utilities:
-AR_RC=ar rc
-CC=gcc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=echo
-RM_F=/bin/rm -f
-
-# Where make install puts libpng.a, libpng16.so*, and png.h
-prefix=/usr/local
-exec_prefix=$(prefix)
-
-# Where the zlib library and include files are located
-# Changing these to ../zlib poses a security risk. If you want
-# to have zlib in an adjacent directory, specify the full path instead of "..".
-#ZLIBLIB=../zlib
-#ZLIBINC=../zlib
-
-ZLIBLIB=/usr/local/lib
-ZLIBINC=/usr/local/include
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes #-Wconversion
-CFLAGS=-I$(ZLIBINC) -W -Wall -O \
- # $(WARNMORE) -g -DPNG_DEBUG=5
-LDFLAGS=-L. -R. -L$(ZLIBLIB) -R$(ZLIBLIB) -lpng16 -lz -lm
-
-INCPATH=$(prefix)/include
-LIBPATH=$(exec_prefix)/lib
-MANPATH=$(prefix)/man
-BINPATH=$(exec_prefix)/bin
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-DB=$(DESTDIR)$(BINPATH)
-DI=$(DESTDIR)$(INCPATH)
-DL=$(DESTDIR)$(LIBPATH)
-DM=$(DESTDIR)$(MANPATH)
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-OBJSDLL = $(OBJS:.o=.pic.o)
-
-.SUFFIXES: .c .o .pic.o
-
-.c.pic.o:
- $(CC) -c $(CFLAGS) -fPIC -o $@ $*.c
-
-all: libpng.a $(LIBSO) pngtest libpng.pc libpng-config
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-libpng.pc:
- cat scripts/libpng.pc.in | sed -e s!@prefix@!$(prefix)! \
- -e s!@exec_prefix@!$(exec_prefix)! \
- -e s!@libdir@!$(LIBPATH)! \
- -e s!@includedir@!$(INCPATH)! \
- -e s!-lpng16!-lpng16\ -lz\ -lm! > libpng.pc
-
-libpng-config:
- ( cat scripts/libpng-config-head.in; \
- echo prefix=\"$(prefix)\"; \
- echo I_opts=\"-I$(INCPATH)/$(LIBNAME)\"; \
- echo cppflags=\""; \
- echo L_opts=\"-L$(LIBPATH)\"; \
- echo R_opts=\"-R$(LIBPATH)\"; \
- echo libs=\"-lpng16 -lz -lm\"; \
- cat scripts/libpng-config-body.in ) > libpng-config
- chmod +x libpng-config
-
-$(LIBSO): $(LIBSOMAJ)
- $(LN_SF) $(LIBSOMAJ) $(LIBSO)
-
-$(LIBSOMAJ): $(OBJSDLL)
- @case "`type ld`" in *ucb*) \
- echo; \
- echo '## WARNING:'; \
- echo '## The commands "CC" and "LD" must NOT refer to /usr/ucb/cc'; \
- echo '## and /usr/ucb/ld. If they do, you need to adjust your PATH'; \
- echo '## environment variable to put /usr/ccs/bin ahead of /usr/ucb.'; \
- echo '## The environment variable LD_LIBRARY_PATH should not be set'; \
- echo '## at all. If it is, things are likely to break because of'; \
- echo '## the libucb dependency that is created.'; \
- echo; \
- ;; \
- esac
- $(LD) -G -h $(LIBSOMAJ) \
- -o $(LIBSOMAJ) $(OBJSDLL)
-
-pngtest: pngtest.o $(LIBSO)
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install-headers: png.h pngconf.h pnglibconf.h
- -@if [ ! -d $(DI) ]; then $(MKDIR_P) $(DI); fi
- -@if [ ! -d $(DI)/$(LIBNAME) ]; then $(MKDIR_P) $(DI)/$(LIBNAME); fi
- cp png.h pngconf.h pnglibconf.h $(DI)/$(LIBNAME)
- chmod 644 $(DI)/$(LIBNAME)/png.h $(DI)/$(LIBNAME)/pngconf.h $(DI)/$(LIBNAME)/pnglibconf.h
- -@$(RM_F) $(DI)/png.h $(DI)/pngconf.h $(DI)/pnglibconf.h
- -@$(RM_F) $(DI)/libpng
- (cd $(DI); $(LN_SF) $(LIBNAME) libpng; $(LN_SF) $(LIBNAME)/* .)
-
-install-static: install-headers libpng.a
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- cp libpng.a $(DL)/$(LIBNAME).a
- chmod 644 $(DL)/$(LIBNAME).a
- -@$(RM_F) $(DL)/libpng.a
- (cd $(DL); $(LN_SF) $(LIBNAME).a libpng.a)
-
-install-shared: install-headers $(LIBSOMAJ) libpng.pc
- -@if [ ! -d $(DL) ]; then $(MKDIR_P) $(DL); fi
- -@$(RM_F) $(DL)/$(LIBSO)
- -@$(RM_F) $(DL)/$(LIBSOREL)
- -@$(RM_F) $(DL)/$(OLDSO)
- cp $(LIBSOMAJ) $(DL)/$(LIBSOREL)
- chmod 755 $(DL)/$(LIBSOREL)
- (cd $(DL); \
- $(LN_SF) $(LIBSOREL) $(LIBSO); \
- $(LN_SF) $(LIBSO) $(OLDSO))
- -@if [ ! -d $(DL)/pkgconfig ]; then $(MKDIR_P) $(DL)/pkgconfig; fi
- -@$(RM_F) $(DL)/pkgconfig/$(LIBNAME).pc
- -@$(RM_F) $(DL)/pkgconfig/libpng.pc
- cp libpng.pc $(DL)/pkgconfig/$(LIBNAME).pc
- chmod 644 $(DL)/pkgconfig/$(LIBNAME).pc
- (cd $(DL)/pkgconfig; $(LN_SF) $(LIBNAME).pc libpng.pc)
-
-install-man: libpng.3 libpngpf.3 png.5
- -@if [ ! -d $(DM) ]; then $(MKDIR_P) $(DM); fi
- -@if [ ! -d $(DM)/man3 ]; then $(MKDIR_P) $(DM)/man3; fi
- -@$(RM_F) $(DM)/man3/libpng.3
- -@$(RM_F) $(DM)/man3/libpngpf.3
- cp libpng.3 $(DM)/man3
- cp libpngpf.3 $(DM)/man3
- -@if [ ! -d $(DM)/man5 ]; then $(MKDIR_P) $(DM)/man5; fi
- -@$(RM_F) $(DM)/man5/png.5
- cp png.5 $(DM)/man5
-
-install-config: libpng-config
- -@if [ ! -d $(DB) ]; then $(MKDIR_P) $(DB); fi
- -@$(RM_F) $(DB)/libpng-config
- -@$(RM_F) $(DB)/$(LIBNAME)-config
- cp libpng-config $(DB)/$(LIBNAME)-config
- chmod 755 $(DB)/$(LIBNAME)-config
- (cd $(DB); $(LN_SF) $(LIBNAME)-config libpng-config)
-
-install: install-static install-shared install-man install-config
-
-# If you installed in $(DESTDIR), test-installed won't work until you
-# move the library to its final location. Use test-dd to test it
-# before then.
-
-test-dd:
- echo
- echo Testing installed dynamic shared library in $(DL).
- $(CC) -I$(DI) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtestd `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- -L$(DL) -L$(ZLIBLIB) -R$(ZLIBLIB) -R$(DL)
- ./pngtestd pngtest.png
-
-test-installed:
- echo
- echo Testing installed dynamic shared library.
- $(CC) -I$(ZLIBINC) \
- `$(BINPATH)/$(LIBNAME)-config --cflags` pngtest.c \
- -o pngtesti `$(BINPATH)/$(LIBNAME)-config --ldflags` \
- -L$(ZLIBLIB) -R$(ZLIBLIB)
- ./pngtesti pngtest.png
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngtesti pngout.png \
- libpng-config $(LIBSO) $(LIBSOMAJ)* \
- libpng.pc pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o png.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o pngerror.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o pngrio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o pngwio.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o pngmem.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o pngset.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o pngget.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o pngread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o pngrtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o pngrutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o pngtrans.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o pngwrite.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o pngwtran.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o pngwutil.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o pngpread.pic.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-# Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-CC=cc
-AR_RC=ar rc
-MKDIR_P=mkdir
-LN_SF=ln -sf
-RANLIB=ranlib
-RM_F=rm -f
-AWK = awk
-SED = sed
-CPP = $(CC) -E
-ECHO = echo
-
-DFNFLAGS = # DFNFLAGS contains -D options to use in the libpng build
-DFA_EXTRA = # extra files that can be used to control configuration
-CFLAGS=-I$(ZLIBINC) -O # -g -DPNG_DEBUG=5
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: libpng.a pngtest
-
-# The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
-# copy this if the following doesn't work.
-pnglibconf.h: pnglibconf.dfn
- $(RM_F) $@ pnglibconf.c pnglibconf.out pnglibconf.tmp
- $(ECHO) '#include "pnglibconf.dfn"' >pnglibconf.c
- $(ECHO) "If '$(CC) -E' crashes try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
- $(CPP) $(DFNFLAGS) pnglibconf.c >pnglibconf.out
- $(AWK) -f "scripts/dfn.awk" out="pnglibconf.tmp" pnglibconf.out 1>&2
- mv pnglibconf.tmp $@
-
-pnglibconf.dfn: scripts/pnglibconf.dfa scripts/options.awk pngconf.h pngusr.dfa $(DFA_XTRA)
- $(RM_F) $@ pnglibconf.pre pnglibconf.tmp
- $(ECHO) "Calling $(AWK) from scripts/pnglibconf.mak" >&2
- $(ECHO) "If 'awk' crashes try a better awk (e.g. AWK='nawk')" >&2
- $(AWK) -f scripts/options.awk out="pnglibconf.pre"\
- version=search pngconf.h scripts/pnglibconf.dfa\
- pngusr.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f scripts/options.awk out="pnglibconf.tmp" pnglibconf.pre 1>&2
- mv pnglibconf.tmp $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install: libpng.a pnglibconf.h
- -@$(MKDIR_P) $(DESTDIR)$(INCPATH)
- -@$(MKDIR_P) $(DESTDIR)$(INCPATH)/libpng
- -@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
- -@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
- -@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
- -@$(RM_F) $(DESTDIR)$(INCPATH)/pnglibconf.h
- cp png.h $(DESTDIR)$(INCPATH)/libpng
- cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
- cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
- (cd $(DESTDIR)$(INCPATH); ln -f -s libpng/* .)
- cp libpng.a $(DESTDIR)$(LIBPATH)
- chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.*
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 2002, 2006 Glenn Randers-Pehrson
-# Copyright (C) 1995 Guy Eric Schalnat, Group 42, Inc.
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# where make install puts libpng.a and png.h
-prefix=/usr/local
-INCPATH=$(prefix)/include
-LIBPATH=$(prefix)/lib
-
-# override DESTDIR= on the make install command line to easily support
-# installing into a temporary location. Example:
-#
-# make install DESTDIR=/tmp/build/libpng
-#
-# If you're going to install into a temporary location
-# via DESTDIR, $(DESTDIR)$(prefix) must already exist before
-# you execute make install.
-DESTDIR=
-
-# Where the zlib library and include files are located
-#ZLIBLIB=/usr/local/lib
-#ZLIBINC=/usr/local/include
-ZLIBLIB=../zlib
-ZLIBINC=../zlib
-
-
-WARNMORE=-Wwrite-strings -Wpointer-arith -Wshadow -Wconversion \
- -Wmissing-declarations -Wtraditional -Wcast-align \
- -Wstrict-prototypes -Wmissing-prototypes
-
-CC=gcc
-AR_RC=ar rc
-MKDIR_P=mkdir -p
-LN_SF=ln -f -s
-RANLIB=ranlib
-RM_F=/bin/rm -f
-
-CFLAGS=-I$(ZLIBINC) -O # $(WARNMORE) -DPNG_DEBUG=5
-LDFLAGS=-L. -L$(ZLIBLIB) -lpng -lz -lm
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o \
- pngread.o pngrio.o pngwio.o pngwrite.o pngrtran.o \
- pngwtran.o pngmem.o pngerror.o pngpread.o
-
-all: libpng.a pngtest
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-libpng.a: $(OBJS)
- $(AR_RC) $@ $(OBJS)
- $(RANLIB) $@
-
-pngtest: pngtest.o libpng.a
- $(CC) -o pngtest $(CFLAGS) pngtest.o $(LDFLAGS)
-
-test: pngtest
- ./pngtest
-
-install: libpng.a
- -@$(MKDIR_P) $(DESTDIR)$(INCPATH)
- -@$(MKDIR_P) $(DESTDIR)$(INCPATH)/libpng
- -@$(MKDIR_P) $(DESTDIR)$(LIBPATH)
- -@$(RM_F) $(DESTDIR)$(INCPATH)/png.h
- -@$(RM_F) $(DESTDIR)$(INCPATH)/pngconf.h
- -@$(RM_F) $(DESTDIR)$(INCPATH)/pnglibconf.h
- cp png.h $(DESTDIR)$(INCPATH)/libpng
- cp pngconf.h $(DESTDIR)$(INCPATH)/libpng
- cp pnglibconf.h $(DESTDIR)$(INCPATH)/libpng
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/png.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pngconf.h
- chmod 644 $(DESTDIR)$(INCPATH)/libpng/pnglibconf.h
- (cd $(DESTDIR)$(INCPATH); $(LN_SF) libpng/* .)
- cp libpng.a $(DESTDIR)$(LIBPATH)
- chmod 644 $(DESTDIR)$(LIBPATH)/libpng.a
-
-clean:
- $(RM_F) *.o libpng.a pngtest pngout.png pnglibconf.h
-
-DOCS = ANNOUNCE CHANGES INSTALL KNOWNBUG LICENSE README TODO Y2KINFO
-writelock:
- chmod a-w *.[ch35] $(DOCS) scripts/*
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-png.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngerror.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwio.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngmem.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngset.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngget.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngrutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngtrans.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwrite.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwtran.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngwutil.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-pngpread.o: png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-
-pngtest.o: png.h pngconf.h pnglibconf.h
+++ /dev/null
-# Makefile for libpng
-# TurboC/C++ (Note: All modules are compiled in C mode)
-
-# To use, do "make -fmakefile.tc3"
-
-# ----- Turbo C 3.00 (can be modified to work with earlier versions) -----
-
-MODEL=l
-CFLAGS=-O2 -Z -m$(MODEL) -I..\zlib
-#CFLAGS=-D_NO_PROTO -O2 -Z -m$(MODEL) -I..\zlib # Turbo C older than 3.00
-CC=tcc
-LD=tcc
-LIB=tlib
-LDFLAGS=-m$(MODEL) -L..\zlib
-O=.obj
-E=.exe
-
-# variables
-OBJS1 = png$(O) pngset$(O) pngget$(O) pngrutil$(O) pngtrans$(O) pngwutil$(O)
-OBJS2 = pngmem$(O) pngpread$(O) pngread$(O) pngerror$(O) pngwrite$(O)
-OBJS3 = pngrtran$(O) pngwtran$(O) pngrio$(O) pngwio$(O)
-OBJSL1 = +png$(O) +pngset$(O) +pngget$(O) +pngrutil$(O) +pngtrans$(O)
-OBJSL2 = +pngwutil$(O) +pngmem$(O) +pngpread$(O) +pngread$(O) +pngerror$(O)
-OBJSL3 = +pngwrite$(O) +pngrtran$(O) +pngwtran$(O) +pngrio$(O) +pngwio$(O)
-
-all: libpng$(MODEL).lib pngtest$(E)
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts/pnglibconf.h.prebuilt
- cp scripts/pnglibconf.h.prebuilt $@
-
-pngtest: pngtest$(E)
-
-test: pngtest$(E)
- pngtest$(E)
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c
-
-libpng$(MODEL).lib: $(OBJS1) $(OBJS2) $(OBJS3)
- $(LIB) libpng$(MODEL) +$(OBJSL1)
- $(LIB) libpng$(MODEL) +$(OBJSL2)
- $(LIB) libpng$(MODEL) +$(OBJSL3)
-
-pngtest$(E): pngtest$(O) libpng$(MODEL).lib
- $(LD) $(LDFLAGS) pngtest.obj libpng$(MODEL).lib zlib_$(MODEL).lib
-
-# End of makefile for libpng
+++ /dev/null
-# makefile for libpng
-# Copyright (C) 1998 Tim Wegner
-# Copyright (C) 2006,2009,2011 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-#
-# Assumes that zlib.lib, zconf.h, and zlib.h have been copied to ..\zlib
-# To use, do "nmake /f scripts\makefile.vcwin32"
-
-# -------- Microsoft Visual C++ 2.0 and later, no assembler code --------
-
-# Compiler, linker, librarian, and other tools
-CC = cl
-LD = link
-AR = lib
-CFLAGS = -nologo -D_CRT_SECURE_NO_DEPRECATE -MD -O2 -W3 -I..\zlib
-LDFLAGS = -nologo
-ARFLAGS = -nologo
-RM = del
-
-# File extensions
-O=.obj
-
-#uncomment next to put error messages in a file
-#ERRFILE= >> pngerrs.log
-
-# Variables
-OBJS1 = png$(O) pngerror$(O) pngget$(O) pngmem$(O) pngpread$(O)
-OBJS2 = pngread$(O) pngrio$(O) pngrtran$(O) pngrutil$(O) pngset$(O)
-OBJS3 = pngtrans$(O) pngwio$(O) pngwrite$(O) pngwtran$(O) pngwutil$(O)
-OBJS = $(OBJS1) $(OBJS2) $(OBJS3)
-
-# Targets
-all: libpng.lib
-
-# see scripts/pnglibconf.mak for more options
-pnglibconf.h: scripts\pnglibconf.h.prebuilt
- copy scripts\pnglibconf.h.prebuilt $@
-
-png$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngset$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngget$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngpread$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngrtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngrutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngerror$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngmem$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngrio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwio$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngtrans$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwrite$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwtran$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngwutil$(O): png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-libpng.lib: $(OBJS)
- -$(RM) $@
- $(AR) $(ARFLAGS) -out:$@ $(OBJS) $(ERRFILE)
-
-pngtest$(O): png.h pngconf.h pnglibconf.h
- $(CC) -c $(CFLAGS) $*.c $(ERRFILE)
-
-pngtest.exe: pngtest$(O) libpng.lib
- $(LD) $(LDFLAGS) -out:$@ pngtest$(O) libpng.lib ..\zlib\zlib.lib $(ERRFILE)
-
-test: pngtest.exe
- pngtest
-
-clean:
- -$(RM) *$(O)
- -$(RM) libpng.lib
- -$(RM) pnglibconf.h
- -$(RM) pngtest.exe
- -$(RM) pngout.png
-
-# End of makefile for libpng
-
+++ /dev/null
-$! make libpng under VMS
-$!
-$!
-$! Check for MMK/MMS
-$!
-$! This procedure accepts one parameter (contrib), which causes it to build
-$! the programs from the contrib directory instead of libpng.
-$!
-$ p1 = f$edit(p1,"UPCASE")
-$ if p1 .eqs. "CONTRIB"
-$ then
-$ set def [.contrib.gregbook]
-$ @makevms
-$ set def [-.pngminus]
-$ @makevms
-$ set def [--]
-$ exit
-$ endif
-$ Make = ""
-$ If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
-$ If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
-$!
-$! Look for the compiler used
-$!
-$ zlibsrc = "[-.zlib]"
-$ ccopt="/include=''zlibsrc'"
-$ if f$getsyi("HW_MODEL").ge.1024
-$ then
-$ ccopt = "/prefix=all"+ccopt
-$ comp = "__decc__=1"
-$ if f$trnlnm("SYS").eqs."" then define sys sys$library:
-$ else
-$ if f$search("SYS$SYSTEM:DECC$COMPILER.EXE").eqs.""
-$ then
-$ if f$trnlnm("SYS").eqs."" then define sys sys$library:
-$ if f$search("SYS$SYSTEM:VAXC.EXE").eqs.""
-$ then
-$ comp = "__gcc__=1"
-$ CC :== GCC
-$ else
-$ comp = "__vaxc__=1"
-$ endif
-$ else
-$ if f$trnlnm("SYS").eqs."" then define sys decc$library_include:
-$ ccopt = "/decc/prefix=all"+ccopt
-$ comp = "__decc__=1"
-$ endif
-$ endif
-$!
-$! Build the thing plain or with mms/mmk
-$!
-$ write sys$output "Compiling Libpng sources ..."
-$ if make.eqs.""
-$ then
-$ dele pngtest.obj;*
-$ CALL MAKE png.OBJ "cc ''CCOPT' png" -
- png.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngset.OBJ "cc ''CCOPT' pngset" -
- pngset.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngget.OBJ "cc ''CCOPT' pngget" -
- pngget.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngread.OBJ "cc ''CCOPT' pngread" -
- pngread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngpread.OBJ "cc ''CCOPT' pngpread" -
- pngpread.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngrtran.OBJ "cc ''CCOPT' pngrtran" -
- pngrtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngrutil.OBJ "cc ''CCOPT' pngrutil" -
- pngrutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngerror.OBJ "cc ''CCOPT' pngerror" -
- pngerror.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngmem.OBJ "cc ''CCOPT' pngmem" -
- pngmem.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngrio.OBJ "cc ''CCOPT' pngrio" -
- pngrio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngwio.OBJ "cc ''CCOPT' pngwio" -
- pngwio.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngtrans.OBJ "cc ''CCOPT' pngtrans" -
- pngtrans.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngwrite.OBJ "cc ''CCOPT' pngwrite" -
- pngwrite.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngwtran.OBJ "cc ''CCOPT' pngwtran" -
- pngwtran.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ CALL MAKE pngwutil.OBJ "cc ''CCOPT' pngwutil" -
- pngwutil.c png.h pngconf.h pnglibconf.h pngpriv.h pngstruct.h pnginfo.h pngdebug.h
-$ write sys$output "Building Libpng ..."
-$ CALL MAKE libpng.OLB "lib/crea libpng.olb *.obj" *.OBJ
-$ write sys$output "Building pngtest..."
-$ CALL MAKE pngtest.OBJ "cc ''CCOPT' pngtest" -
- pngtest.c png.h pngconf.h pnglibconf.h
-$ call make pngtest.exe -
- "LINK pngtest,libpng.olb/lib,''zlibsrc'libz.olb/lib" -
- pngtest.obj libpng.olb
-$ write sys$output "Testing Libpng..."
-$ run pngtest
-$ else
-$ if f$search("DESCRIP.MMS") .eqs. "" then copy/nolog [.SCRIPTS]DESCRIP.MMS []
-$ 'make'/macro=('comp',zlibsrc='zlibsrc')
-$ endif
-$ write sys$output "Libpng build completed"
-$ exit
-$!
-$!
-$MAKE: SUBROUTINE !SUBROUTINE TO CHECK DEPENDENCIES
-$ V = 'F$Verify(0)
-$! P1 = What we are trying to make
-$! P2 = Command to make it
-$! P3 - P8 What it depends on
-$
-$ If F$Search(P1) .Eqs. "" Then Goto Makeit
-$ Time = F$CvTime(F$File(P1,"RDT"))
-$arg=3
-$Loop:
-$ Argument = P'arg
-$ If Argument .Eqs. "" Then Goto Exit
-$ El=0
-$Loop2:
-$ File = F$Element(El," ",Argument)
-$ If File .Eqs. " " Then Goto Endl
-$ AFile = ""
-$Loop3:
-$ OFile = AFile
-$ AFile = F$Search(File)
-$ If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl
-$ If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit
-$ Goto Loop3
-$NextEL:
-$ El = El + 1
-$ Goto Loop2
-$EndL:
-$ arg=arg+1
-$ If arg .Le. 8 Then Goto Loop
-$ Goto Exit
-$
-$Makeit:
-$ VV=F$VERIFY(0)
-$ write sys$output P2
-$ 'P2
-$ VV='F$Verify(VV)
-$Exit:
-$ If V Then Set Verify
-$ENDSUBROUTINE
+++ /dev/null
-#!/bin/awk -f
-# scripts/options.awk - library build configuration control
-#
-# last changed in libpng version 1.5.7 - December 15, 2011
-#
-# Copyright (c) 1998-2011 Glenn Randers-Pehrson
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-# The output of this script is written to the file given by
-# the variable 'out'. The script is run twice, once with
-# an intermediate output file, 'options.tmp' then again on
-# that file to produce the final output:
-#
-# awk -f scripts/options.awk out=options.tmp scripts/options.dfa 1>&2
-# awk -f scripts/options.awk out=options.dfn options.tmp 1>&2
-#
-# Some options may be specified on the command line:
-#
-# deb=1 Causes debugging to be output
-# logunsupported=1 Causes all options to be recorded in the output
-# everything=off Causes all options to be disabled by default
-# everything=on Causes all options to be enabled by default
-#
-# If awk fails on your platform, try nawk instead.
-#
-# These options may also be specified in the original input file (and
-# are copied to the preprocessed file).
-
-BEGIN{
- out="" # intermediate, preprocessed, file
- pre=-1 # preprocess (first line)
- version="libpng version unknown" # version information
- version_file="" # where to find the version
- err=0 # in-line exit sets this
- # The following definitions prevent the C preprocessor noticing the lines
- # that will be in the final output file. Some C preprocessors tokenise
- # the lines, for example by inserting spaces around operators, and all
- # C preprocessors notice lines that start with '#', most remove comments.
- # The technique adopted here is to make the final output lines into
- # C strings (enclosed in double quotes), preceeded by PNG_DFN. As a
- # consequence the output cannot contain a 'raw' double quote - instead put
- # @' in, this will be replaced by a single " afterward. See the parser
- # script dfn.awk for more capabilities (not required here). Note that if
- # you need a " in a 'setting' in pnglibconf.dfa it must also be @'!
- dq="@'" # For a single double quote
- start=" PNG_DFN \"" # Start stuff to output (can't contain a "!)
- end="\" " # End stuff to output
- subs="@\" " # Substitute start (substitute a C macro)
- sube=" \"@" # Substitute end
- comment=start "/*" # Comment start
- cend="*/" end # Comment end
- def=start "#define PNG_" # Arbitrary define
- sup="_SUPPORTED" end # end supported option
- und=comment "#undef PNG_" # Unsupported option
- une="_SUPPORTED" cend # end unsupported option
- error=start "ERROR:" # error message, terminate with 'end'
-
- # Variables
- deb=0 # debug - set on command line
- everything="" # do not override defaults
- logunsupported=0 # write unsupported options too
-
- # Precreate arrays
- # for each option:
- option[""] = "" # list of all options: default enabled/disabled
- done[""] = 1 # marks option as having been output
- requires[""] = "" # requires by option
- iffs[""] = "" # if by option
- enabledby[""] = "" # options that enable it by option
- sets[""] = "" # settings set by each option
- setval[""] = "" # value to set (indexed: 'option sets[option]')
- # for each setting:
- setting[""] = "" # requires by setting
- defaults[""] = "" # used for a defaulted value
- doneset[""] = 1 # marks setting as having been output
- r[""] = "" # Temporary array
-
- # For decorating the output file
- protect = ""
-}
-
-# The output file must be specified before any input:
-out == "" {
- print "out=output.file must be given on the command line"
- err = 1
- exit 1
-}
-
-# The very first line indicates whether we are reading pre-processed
-# input or not, this must come *first* because 'PREPROCESSED' needs
-# to be the very first line in the temporary file.
-pre == -1{
- if ($0 == "PREPROCESSED") {
- pre = 0
- next
- } else {
- pre = 1
- print "PREPROCESSED" >out
- # And fall through to continue processing
- }
-}
-
-# While pre-processing if version is set to "search" look for a version string
-# in the following file.
-pre && version == "search" && version_file == ""{
- version_file = FILENAME
-}
-
-pre && version == "search" && version_file != FILENAME{
- print "version string not found in", version_file
- err = 1
- exit 1
-}
-
-pre && version == "search" && $0 ~ /^ \* libpng version/{
- version = substr($0, 4)
- print "version =", version >out
- next
-}
-
-pre && FILENAME == version_file{
- next
-}
-
-# variable=value
-# Sets the given variable to the given value (the syntax is fairly
-# free form, except for deb (you are expected to understand how to
-# set the debug variable...)
-#
-# This happens before the check on 'pre' below skips most of the
-# rest of the actions, so the variable settings happen during
-# preprocessing but are recorded in the END action too. This
-# allows them to be set on the command line too.
-$0 ~ /^[ ]*version[ ]*=/{
- sub(/^[ ]*version[ ]*=[ ]*/, "")
- version = $0
- next
-}
-$0 ~ /^[ ]*everything[ =]*off[ ]*$/{
- everything = "off"
- next
-}
-$0 ~ /^[ ]*everything[ =]*on[ ]*$/{
- everything = "on"
- next
-}
-$0 ~ /^[ ]*logunsupported[ =]*0[ ]*$/{
- logunsupported = 0
- next
-}
-$0 ~ /^[ ]*logunsupported[ =]*1[ ]*$/{
- logunsupported = 1
- next
-}
-$1 == "deb" && $2 == "=" && NF == 3{
- deb = $3
- next
-}
-
-# Preprocessing - this just copies the input file with lines
-# that need preprocessing (just chunk at present) expanded
-# The bare "pre" instead of "pre != 0" crashes under Sunos awk
-pre && $1 != "chunk"{
- print >out
- next
-}
-
-# The first characters of the line determine how it is processed,
-# leading spaces are ignored. In general tokens that are not
-# keywords are the names of options. An option 'name' is
-# controlled by the definition of the corresponding macros:
-#
-# PNG_name_SUPPORTED The option is turned on
-# PNG_NO_name
-# PNG_NO_name_SUPPORTED If the first macro is not defined
-# either of these will turn the option off
-#
-# If none of these macros are defined the option is turned on, unless
-# the keyword 'off' is given in a line relating to the option. The
-# keyword 'on' can also be given, but it will be ignored (since it is
-# the default.)
-#
-# In the syntax below a 'name' is indicated by "NAME", other macro
-# values are indicated by "MACRO", as with "NAME" the leading "PNG_"
-# is omitted, but in this case the "NO_" prefix and the "_SUPPORTED"
-# suffix are never used.
-#
-# Each line is introduced by a keyword - the first non-space characters
-# on the line. A line starting with a '#' is a comment - it is totally
-# ignored. Keywords are as follows, a NAME, is simply a macro name
-# without the leading PNG_, PNG_NO_ or the trailing _SUPPORTED.
-
-$1 ~ /^#/ || $0 ~ /^[ ]*$/{
- next
-}
-
-# com <comment>
-# The whole line is placed in the output file as a comment with
-# the preceding 'com' removed
-$1 == "com"{
- if (NF > 1) {
- # sub(/^[ ]*com[ ]*/, "")
- $1 = ""
- print comment $0, cend >out
- } else
- print start end >out
- next
-}
-
-# version
-# Inserts a version comment
-$1 == "version" && NF == 1{
- if (version == "") {
- print "ERROR: no version string set"
- err = 1 # prevent END{} running
- exit 1
- }
-
- print comment, version, cend >out
- next
-}
-
-# file output input protect
-# Informational: the official name of the input file (without
-# make generated local directories), the official name of the
-# output file and, if required, a name to use in a protection
-# macro for the contents.
-$1 == "file" && NF >= 2{
- print comment, $2, cend >out
- print comment, "Machine generated file: DO NOT EDIT", cend >out
- if (NF >= 3)
- print comment, "Derived from:", $3, cend >out
- protect = $4
- if (protect != "") {
- print start "#ifndef", protect end >out
- print start "#define", protect end >out
- }
- next
-}
-
-# option NAME ( (requires|enables|if) NAME* | on | off | disabled |
-# sets SETTING VALUE+ )*
-#
-# Declares an option 'NAME' and describes its default setting (disabled)
-# and its relationship to other options. The option is disabled
-# unless *all* the options listed after 'requires' are set and at
-# least one of the options listed after 'if' is set. If the
-# option is set then it turns on all the options listed after 'enables'.
-#
-# Note that "enables" takes priority over the required/if/disabled/off
-# setting of the target option.
-#
-# The definition file may list an option as 'disabled': off by default,
-# otherwise the option is enabled: on by default. A later (and it must
-# be later) entry may turn an option on or off explicitly.
-
-$1 == "option" && NF >= 2{
- opt = $2
- sub(/,$/,"",opt)
- onoff = option[opt] # records current (and the default is "", enabled)
- key = ""
- istart = 3
- do {
- if (istart == 1) { # continuation line
- val = getline
-
- if (val != 1) { # error reading it
- if (val == 0)
- print "option", opt ": ERROR: missing contination line"
- else
- print "option", opt ": ERROR: error reading continuation line"
-
- # This is a hard error
- err = 1 # prevent END{} running
- exit 1
- }
- }
-
- for (i=istart; i<=NF; ++i) {
- val=$(i)
- sub(/,$/,"",val)
- if (val == "on" || val == "off" || val == "disabled") {
- key = ""
- if (onoff != val) {
- # on or off can zap disabled or enabled:
- if (onoff == "" || (onoff == "disabled" || onoff == "enabled") &&
- (val == "on" || val == "off")) {
- # It's easy to mis-spell the option when turning it
- # on or off, so warn about it here:
- if (onoff == "" && (val == "on" || val == "off")) {
- print "option", opt ": ERROR: turning unrecognized option", val
- # For the moment error out - it is safer
- err = 1 # prevent END{} running
- exit 1
- }
- onoff = val
- } else {
- # Print a message, otherwise the error
- # below is incomprehensible
- print "option", opt ": currently", onoff ": attempt to turn", val
- break
- }
- }
- } else if (val == "requires" || val == "if" || val == "enables" || val =="sets") {
- key = val
- } else if (key == "requires") {
- requires[opt] = requires[opt] " " val
- } else if (key == "if") {
- iffs[opt] = iffs[opt] " " val
- } else if (key == "enables") {
- enabledby[val] = enabledby[val] " " opt
- } else if (key == "sets") {
- sets[opt] = sets[opt] " " val
- key = "setval"
- set = val
- } else if (key == "setval") {
- setval[opt " " set] = setval[opt " " set] " " val
- } else
- break # bad line format
- }
-
- istart = 1
- } while (i > NF && $0 ~ /,$/)
-
- if (i > NF) {
- # Set the option, defaulting to 'enabled'
- if (onoff == "") onoff = "enabled"
- option[opt] = onoff
- next
- }
- # Else fall through to the error handler
-}
-
-# chunk NAME [requires OPT] [enables LIST] [on|off|disabled]
-# Expands to the 'option' settings appropriate to the reading and
-# writing of an ancilliary PNG chunk 'NAME':
-#
-# option READ_NAME requires READ_ANCILLARY_CHUNKS [READ_OPT]
-# option READ_NAME enables NAME LIST
-# [option READ_NAME off]
-# option WRITE_NAME requires WRITE_ANCILLARY_CHUNKS [WRITE_OPT]
-# option WRITE_NAME enables NAME LIST
-# [option WRITE_NAME off]
-
-pre != 0 && $1 == "chunk" && NF >= 2{
- # 'chunk' is handled on the first pass by writing appropriate
- # 'option' lines into the intermediate file.
- opt = $2
- sub(/,$/,"",opt)
- onoff = ""
- reqread = ""
- reqwrite = ""
- enables = ""
- req = 0
- istart = 3
- do {
- if (istart == 1) { # continuation line
- val = getline
-
- if (val != 1) { # error reading it
- if (val == 0)
- print "chunk", opt ": ERROR: missing contination line"
- else
- print "chunk", opt ": ERROR: error reading continuation line"
-
- # This is a hard error
- err = 1 # prevent END{} running
- exit 1
- }
- }
-
- # read the keywords/additional OPTS
- for (i=istart; i<=NF; ++i) {
- val = $(i)
- sub(/,$/,"",val)
- if (val == "on" || val == "off" || val == "disabled") {
- if (onoff != val) {
- if (onoff == "")
- onoff = val
- else
- break # on/off conflict
- }
- req = 0
- } else if (val == "requires")
- req = 1
- else if (val == "enables")
- req = 2
- else if (req == 1){
- reqread = reqread " READ_" val
- reqwrite = reqwrite " WRITE_" val
- } else if (req == 2)
- enables = enables " " val
- else
- break # bad line: handled below
- }
-
- istart = 1
- } while (i > NF && $0 ~ /,$/)
-
- if (i > NF) {
- # Output new 'option' lines to the intermediate file (out)
- print "option READ_" opt, "requires READ_ANCILLARY_CHUNKS" reqread, "enables", opt enables , onoff >out
- print "option WRITE_" opt, "requires WRITE_ANCILLARY_CHUNKS" reqwrite, "enables", opt enables, onoff >out
- next
- }
- # Else hit the error handler below - bad line format!
-}
-
-# setting MACRO ( requires MACRO* )* [ default VALUE ]
-# Behaves in a similar way to 'option' without looking for NO_ or
-# _SUPPORTED; the macro is enabled if it is defined so long as all
-# the 'requires' macros are also defined. The definitions may be
-# empty, an error will be issued if the 'requires' macros are
-# *not* defined. If given the 'default' value is used if the
-# macro is not defined. The default value will be re-tokenised.
-# (BTW: this is somewhat restrictive, it mainly exists for the
-# support of non-standard configurations and numeric parameters,
-# see the uses in scripts/options.dat
-
-$1 == "setting" && (NF == 2 || NF >= 3 && ($3 == "requires" || $3 == "default")){
- reqs = ""
- deflt = ""
- isdef = 0
- key = ""
- for (i=3; i<=NF; ++i)
- if ($(i) == "requires" || $(i) == "default") {
- key = $(i)
- if (key == "default") isdef = 1
- } else if (key == "requires")
- reqs = reqs " " $(i)
- else if (key == "default")
- deflt = deflt " " $(i)
- else
- break # Format error, handled below
-
- setting[$2] = reqs
- # NOTE: this overwrites a previous value silently
- if (isdef && deflt == "")
- deflt = " " # as a flag to force output
- defaults[$2] = deflt
- next
-}
-
-# The order of the dependency lines (option, chunk, setting) is irrelevant
-# - the 'enables', 'requires' and 'if' settings will be used to determine
-# the correct order in the output and the final values in pnglibconf.h are
-# not order dependent. 'requires' and 'if' entries take precedence over
-# 'enables' from other options; if an option requires another option it
-# won't be set regardless of any options that enable it unless the other
-# option is also enabled.
-#
-# Similarly 'enables' trumps a NO_ definition in CFLAGS or pngusr.h
-#
-# For simplicity cycles in the definitions are regarded as errors,
-# even if they are not ambiguous.
-# A given NAME can be specified in as many 'option' lines as required, the
-# definitions are additive.
-
-# For backwards compatibility equivalent macros may be listed thus:
-#
-# = [NO_]NAME MACRO
-# Makes -DMACRO equivalent to -DPNG_NO_NAME or -DPNG_NAME_SUPPORTED
-# as appropriate.
-#
-# The definition is injected into the C compiler input when encountered
-# in the second pass (so all these definitions appear *after* the @
-# lines!)
-#
-# 'NAME' is as above, but 'MACRO' is the full text of the equivalent
-# old, deprecated, macro.
-
-$1 == "=" && NF == 3{
- print "#ifdef PNG_" $3 >out
- if ($2 ~ /^NO_/)
- print "# define PNG_" $2 >out
- else
- print "# define PNG_" $2 "_SUPPORTED" >out
- print "#endif" >out
- next
-}
-
-# Lines may be injected into the C compiler input by preceding them
-# with an "@" character. The line is copied with just the leading
-# @ removed.
-
-$1 ~ /^@/{
- # sub(/^[ ]*@/, "")
- $1 = substr($1, 2)
- print >out
- next
-}
-
-# Check for unreognized lines, because of the preprocessing chunk
-# format errors will be detected on the first pass independent of
-# any other format errors.
-{
- print "options.awk: bad line (" NR "):", $0
- err = 1 # prevent END{} running
- exit 1
-}
-
-# For checking purposes names that start with "ok_" or "fail_" are
-# not output to pnglibconf.h and must be either enabled or disabled
-# respectively for the build to succeed. This allows interdependencies
-# between options of the form "at least one of" or "at most one of"
-# to be checked. For example:
-#
-# option FLOATING_POINT enables ok_math
-# option FIXED_POINT enables ok_math
-# This ensures that at least one of FLOATING_POINT and FIXED_POINT
-# must be set for the build to succeed.
-#
-# option fail_math requires FLOATING_POINT FIXED_POINT
-# This means the build will fail if *both* FLOATING_POINT and
-# FIXED_POINT are set (this is an example; in fact both are allowed.)
-#
-# If all these options were given the build would require exactly one
-# of the names to be enabled.
-
-END{
- # END{} gets run on an exit (a traditional awk feature)
- if (err) exit 1
-
- if (pre) {
- # Record the final value of the variables
- print "deb =", deb >out
- if (everything != "") {
- print "everything =", everything >out
- }
- print "logunsupported =", logunsupported >out
- exit 0
- }
-
- # Do the options first (allowing options to set settings). The dependency
- # tree is thus:
- #
- # name > name
- # name requires name
- # name if name
- # name enabledby name
- #
- # First build a list 'tree' by option of all the things on which
- # it depends.
- print "" >out
- print "/* OPTIONS */" >out
- print comment, "options", cend >out
- for (opt in enabledby) tree[opt] = 1 # may not be explicit options
- for (opt in option) if (opt != "") {
- o = option[opt]
- # option should always be one of the following values
- if (o != "on" && o != "off" && o != "disabled" && o != "enabled") {
- print "internal option error (" o ")"
- exit 1
- }
- tree[opt] = "" # so unlisted options marked
- }
- for (opt in tree) if (opt != "") {
- if (tree[opt] == 1) {
- tree[opt] = ""
- if (option[opt] != "") {
- print "internal error (1)"
- exit 1
- }
- # Macros only listed in 'enables' remain off unless
- # one of the enabling macros is on.
- option[opt] = "disabled"
- }
-
- split("", list) # clear 'list'
- # Now add every requires, iffs or enabledby entry to 'list'
- # so that we can add a unique list of requirements to tree[i]
- split(requires[opt] iffs[opt] enabledby[opt], r)
- for (i in r) list[r[i]] = 1
- for (i in list) tree[opt] = tree[opt] " " i
- }
-
- # print the tree for extreme debugging
- if (deb > 2) for (i in tree) if (i != "") print i, "depends-on" tree[i]
-
- # Ok, now check all options marked explicitly 'on' or 'off':
- #
- # If an option[opt] is 'on' then turn on all requires[opt]
- # If an option[opt] is 'off' then turn off all enabledby[opt]
- #
- # Error out if we have to turn 'on' an 'off' option or vice versa.
- npending = 0
- for (opt in option) if (opt != "") {
- if (option[opt] == "on" || option[opt] == "off") {
- pending[++npending] = opt
- }
- }
-
- err = 0 # set on error
- while (npending > 0) {
- opt = pending[npending--]
- if (option[opt] == "on") {
- nreqs = split(requires[opt], r)
- for (j=1; j<=nreqs; ++j) {
- if (option[r[j]] == "off") {
- print "option", opt, "turned on, but requirement", r[j], "is turned off"
- err = 1
- } else if (option[r[j]] != "on") {
- option[r[j]] = "on"
- pending[++npending] = r[j]
- }
- }
- } else {
- if (option[opt] != "off") {
- print "internal error (2)"
- exit 1
- }
- nreqs = split(enabledby[opt], r)
- for (j=1; j<=nreqs; ++j) {
- if (option[r[j]] == "on") {
- print "option", opt, "turned off, but enabled by", r[j], "which is turned on"
- err = 1
- } else if (option[r[j]] != "off") {
- option[r[j]] = "off"
- pending[++npending] = r[j]
- }
- }
- }
- }
- if (err) exit 1
-
- # Sort options:
- print "PNG_DFN_START_SORT 2" >out
-
- # option[i] is now the complete list of all the tokens we may
- # need to output, go through it as above, depth first.
- finished = 0
- while (!finished) {
- finished = 1
- movement = 0 # done nothing
- for (i in option) if (!done[i]) {
- nreqs = split(tree[i], r)
- if (nreqs > 0) {
- for (j=1; j<=nreqs; ++j) if (!done[r[j]]) {
- break
- }
- if (j<=nreqs) {
- finished = 0
- continue # next option
- }
- }
-
- # All the requirements have been processed, output
- # this option. An option is _SUPPORTED if:
- #
- # all 'requires' are _SUPPORTED AND
- # at least one of the 'if' options are _SUPPORTED AND
- # EITHER:
- # The name is _SUPPORTED (on the command line)
- # OR:
- # an 'enabledby' is _SUPPORTED
- # OR:
- # NO_name is not defined AND
- # the option is not disabled; an option is disabled if:
- # option == off
- # option == disabled && everything != on
- # option == "" && everything == off
- if (deb) print "option", i
- print "" >out
- print "/* option:", i, option[i] >out
- print " * requires: " requires[i] >out
- print " * if: " iffs[i] >out
- print " * enabled-by:" enabledby[i] >out
- print " * sets: " sets[i], "*/" >out
- print "#undef PNG_on" >out
- print "#define PNG_on 1" >out
-
- # requires
- nreqs = split(requires[i], r)
- for (j=1; j<=nreqs; ++j) {
- print "#ifndef PNG_" r[j] "_SUPPORTED" >out
- print "# undef PNG_on /*!" r[j] "*/" >out
- # this error appears in the final output if something
- # was switched 'on' but the processing above to force
- # the requires did not work
- if (option[i] == "on") {
- print error, i, "requires", r[j] end >out
- }
- print "#endif" >out
- }
-
- # if
- nreqs = split(iffs[i], r)
- print "#undef PNG_no_if" >out
- if (nreqs > 0) {
- print "/* if" iffs[i], "*/" >out
- print "#define PNG_no_if 1" >out
- for (j=1; j<=nreqs; ++j) {
- print "#ifdef PNG_" r[j] "_SUPPORTED" >out
- print "# undef PNG_no_if /*" r[j] "*/" >out
- print "#endif" >out
- }
- print "#ifdef PNG_no_if /*missing if*/" >out
- print "# undef PNG_on" >out
- # There is no checking above for this, because we
- # don't know which 'if' to choose, so whine about
- # it here:
- if (option[i] == "on") {
- print error, i, "needs one of:", iffs[i] end >out
- }
- print "#endif" >out
- }
-
- print "#ifdef PNG_on /*requires, if*/" >out
- # enables
- print "# undef PNG_not_enabled" >out
- print "# define PNG_not_enabled 1" >out
- print " /* enabled by" enabledby[i], "*/" >out
- nreqs = split(enabledby[i], r)
- for (j=1; j<=nreqs; ++j) {
- print "#ifdef PNG_" r[j] "_SUPPORTED" >out
- print "# undef PNG_not_enabled /*" r[j] "*/" >out
- # Oops, probably not intended (should be factored
- # out by the checks above).
- if (option[i] == "off") {
- print error, i, "enabled by:", r[j] end >out
- }
- print "#endif" >out
- }
-
- print "# ifndef PNG_" i "_SUPPORTED /*!command line*/" >out
- print "# ifdef PNG_not_enabled /*!enabled*/" >out
- if (option[i] == "off" || option[i] == "disabled" && everything != "on" || option[i] == "enabled" && everything == "off") {
- print "# undef PNG_on /*default off*/" >out
- } else {
- print "# ifdef PNG_NO_" i >out
- print "# undef PNG_on /*turned off*/" >out
- print "# endif" >out
- print "# ifdef PNG_NO_" i "_SUPPORTED" >out
- print "# undef PNG_on /*turned off*/" >out
- print "# endif" >out
- }
- print "# endif /*!enabled*/" >out
- print "# ifdef PNG_on" >out
- # The _SUPPORTED macro must be defined so that dependent
- # options output later work.
- print "# define PNG_" i "_SUPPORTED" >out
- print "# endif" >out
- print "# endif /*!command line*/" >out
- # If PNG_on is still set the option should be defined in
- # pnglibconf.h
- print "# ifdef PNG_on" >out
- if (i ~ /^fail_/) {
- print error, i, "is on: enabled by:" iffs[i] enabledby[i] ", requires" requires[i] end >out
- } else if (i !~ /^ok_/) {
- print def i sup >out
- # Supported option, set required settings
- nreqs = split(sets[i], r)
- for (j=1; j<=nreqs; ++j) {
- print "# ifdef PNG_set_" r[j] >out
- # Some other option has already set a value:
- print error, i, "sets", r[j] ": duplicate setting" end >out
- print error, " previous value: " end "PNG_set_" r[j] >out
- print "# else" >out
- # Else set the default: note that this won't accept arbitrary
- # values, the setval string must be acceptable to all the C
- # compilers we use. That means it must be VERY simple; a number,
- # a name or a string.
- print "# define PNG_set_" r[j], setval[i " " r[j]] >out
- print "# endif" >out
- }
- }
- print "# endif /* definition */" >out
- print "#endif /*requires, if*/" >out
- if (logunsupported || i ~ /^ok_/) {
- print "#ifndef PNG_on" >out
- if (logunsupported) {
- print und i une >out
- }
- if (i ~ /^ok_/) {
- print error, i, "not enabled: requires:" requires[i] ", enabled by:" iffs[i] enabledby[i] end >out
- }
- print "#endif" >out
- }
-
- done[i] = 1
- ++movement
- }
-
- if (!finished && !movement) {
- print "option: loop or missing option in dependency tree, cannot process:"
- for (i in option) if (!done[i]) {
- print " option", i, "depends on" tree[i], "needs:"
- nreqs = split(tree[i], r)
- if (nreqs > 0) for (j=1; j<=nreqs; ++j) if (!done[r[j]]) {
- print " " r[j]
- }
- }
- exit 1
- }
- }
- print "PNG_DFN_END_SORT" >out
- print comment, "end of options", cend >out
-
- # Do the 'setting' values second, the algorithm the standard
- # tree walk (O(1)) done in an O(2) while/for loop; interations
- # settings x depth, outputing the deepest required macros
- # first.
- print "" >out
- print "/* SETTINGS */" >out
- print comment, "settings", cend >out
- # Sort (in dfn.awk) on field 2, the setting name
- print "PNG_DFN_START_SORT 2" >out
- finished = 0
- while (!finished) {
- finished = 1
- movement = 0 # done nothing
- for (i in setting) if (!doneset[i]) {
- nreqs = split(setting[i], r)
- if (nreqs > 0) {
- # By default assume the requires values are options, but if there
- # is no option with that name check for a setting
- for (j=1; j<=nreqs; ++j) if (option[r[j]] == "" && !doneset[r[j]]) {
- break
- }
- if (j<=nreqs) {
- finished = 0
- continue # try a different setting
- }
- }
-
- # All the requirements have been processed, output
- # this setting.
- if (deb) print "setting", i
- deflt = defaults[i]
- # Remove any spurious trailing spaces
- sub(/ *$/,"",deflt)
- # A leading @ means leave it unquoted so the preprocessor
- # can substitute the build time value
- if (deflt ~ /^ @/)
- deflt = " " subs substr(deflt, 3) sube
- print "" >out
- print "/* setting: ", i >out
- print " * requires:" setting[i] >out
- print " * default: ", defaults[i] deflt, "*/" >out
- for (j=1; j<=nreqs; ++j) {
- if (option[r[j]] != "")
- print "#ifndef PNG_" r[j] "_SUPPORTED" >out
- else
- print "#ifndef PNG_" r[j] >out
- print error, i, "requires", r[j] end >out
- print "# endif" >out
- }
- # The precedence is:
- #
- # 1) External definition; trumps:
- # 2) Option 'sets' value; trumps:
- # 3) Setting 'default'
- #
- print "#ifdef PNG_" i >out
- # PNG_<i> is defined, so substitute the value:
- print def i, subs "PNG_" i sube end >out
- print "#else /* use default */" >out
- print "# ifdef PNG_set_" i >out
- # Value from an option 'sets' argument
- print def i, subs "PNG_set_" i sube end >out
- # This is so that subsequent tests on the setting work:
- print "# define PNG_" i, "1" >out
- if (defaults[i] != "") {
- print "# else /*default*/" >out
- print def i deflt end >out
- print "# define PNG_" i, "1" >out
- }
- print "# endif /* defaults */" >out
- print "#endif /* setting", i, "*/" >out
-
- doneset[i] = 1
- ++movement
- }
-
- if (!finished && !movement) {
- print "setting: loop or missing setting in 'requires', cannot process:"
- for (i in setting) if (!doneset[i]) {
- print " setting", i, "requires" setting[i]
- }
- exit 1
- }
- }
- print "PNG_DFN_END_SORT" >out
- print comment, "end of settings", cend >out
-
- # Regular end - everything looks ok
- if (protect != "") {
- print start "#endif", "/*", protect, "*/" end >out
- }
-}
+++ /dev/null
-# scripts/pnglibconf.dfa - library build configuration control
-#
-@/*- pnglibconf.dfn intermediate file
-@ * generated from scripts/pnglibconf.dfa
-@ */
-#
-com pnglibconf.h - library build configuration
-com
-version
-com
-com Copyright (c) 1998-2012 Glenn Randers-Pehrson
-com
-com This code is released under the libpng license.
-com For conditions of distribution and use, see the disclaimer
-com and license in png.h
-com
-
-file pnglibconf.h scripts/pnglibconf.dfa PNGLCONF_H
-
-# This file is preprocessed by scripts/options.awk and the
-# C compiler to generate 'pnglibconf.h' - a list of all the
-# configuration options. The file lists the various options
-# that can *only* be specified during the libpng build;
-# pnglibconf.h freezes the definitions selected for the specific
-# build.
-#
-# The syntax is detailed in scripts/options.awk; this is a summary
-# only:
-#
-# setting <name> [requires ...] [default]
-# #define PNG_<name> <value> /* value comes from current setting */
-# option <name> [requires ...] [if ...] [enables ...] [disabled]
-# #define PNG_<name>_SUPPORTED if the requirements are met and
-# enable the other options listed
-# chunk <name> [requires ...] [enables ...] [disabled]
-# Enable chunk processing for the given ancillary chunk; any
-# 'requires something' expands to READ_something for read and
-# WRITE_something for write, but the enables list members are
-# used as given (e.g. enables GAMMA just expands to that on the
-# correspond READ_name and WRITE_name lines.)
-#
-# "," may be used to separate options on an 'option' line and is ignored; it
-# doesn't change the meaning of the line. (NOT setting, where "," becomes
-# part of the setting!) A comma at the end of an option line causes a
-# continuation (the next line is included in the option too.)
-#
-# Note that the 'on' and 'off' keywords, while valid on both option
-# and chunk, should not be used in this file because they force the
-# relevant options on or off.
-
-#----------------------------------------------------------------------
-
-# The following setting, option and chunk values can all be changed
-# while building libpng:
-#
-# setting: change 'setting' lines to fine tune library performance;
-# changes to the settings don't affect the libpng API functionally
-#
-# option: change 'option' lines to remove or add capabilities from
-# or to the library; options change the library API
-#
-# chunk: change 'chunk' lines to remove capabilities to process
-# optional ('ancillary') chunks. This does not prevent PNG
-# decoding but does change the libpng API because some chunks
-# will be ignored.
-#
-# There are three ways of disabling features, in no particular order:
-#
-# 1) Create 'pngusr.h', enter the required private build information
-# detailed below and #define PNG_NO_<option> for each option you
-# don't want in that file in that file. You can also turn on options
-# using PNG_<option>_SUPPORTED. When you have finished rerun
-# configure and rebuild pnglibconf.h file with -DPNG_USER_CONFIG:
-#
-# make clean
-# CPPFLAGS='-DPNG_USER_CONFIG' ./configure
-# make pnglibconf.h
-#
-# pngusr.h is only used during the creation of pnglibconf.h, but it
-# is safer to ensure that -DPNG_USER_CONFIG is specified throughout
-# the build by changing the CPPFLAGS passed to the initial ./configure
-#
-# 2) Add definitions of the settings you want to change to
-# CPPFLAGS; for example:
-#
-# -DPNG_DEFAULT_READ_MACROS=0
-#
-# (This would change the default to *not* use read macros.) Be
-# very careful to change only settings that don't alter the API
-# because this approach bypasses the private build checking. You
-# can also change settings from pngpriv.h (read pngpriv.h) safely
-# without API changes. Do that in the same way.
-#
-# 3) Write a new '.dfa' file (say 'pngusr.dfa') and in this file
-# provide override values for setting entries and turn option or
-# chunk values explicitly 'on' or 'off':
-#
-# setting FOO default VALUE
-# option BAR [on|off]
-#
-# Then add this file to the options.awk command line (the *first*
-# one) after this file. The make macro DFA_XTRA is provided to make
-# this easier (set it like CPPFLAGS prior to running ./configure).
-# Look at the builds below contrib/pngminim for some extreme examples
-# of how this can be used.
-#
-# Don't edit this file unless you are contributing a patch to
-# libpng and need new or modified options/settings.
-#----------------------------------------------------------------------
-
-# The following causes commented out #undef lines to be written to
-# pnglibconf.h; this can be stopped by logunsupported=0 in a later
-# file or on the command line (after pnglibconf.dfa)
-
-logunsupported = 1
-
-# PNG_USER_CONFIG has to be defined on the compiler command line
-# to cause pngusr.h to be read while constructing pnglibconf.h
-#
-# If you create a private DLL you need to define the following
-# macros in the file 'pngusr.h' and set -DPNG_USER_CONFIG for
-# compilation (i.e. in CPPFLAGS.)
-# #define PNG_USER_PRIVATEBUILD \
-# <Describes by whom and why this version of the DLL was built>
-# e.g. #define PNG_USER_PRIVATEBUILD "Build by MyCompany for xyz reasons."
-# #define PNG_USER_DLLFNAME_POSTFIX <two-letter postfix that serve to
-# distinguish your DLL from those of the official release. These
-# correspond to the trailing letters that come after the version
-# number and must match your private DLL name>
-# e.g. // private DLL "libpng13gx.dll"
-# #define PNG_USER_DLLFNAME_POSTFIX "gx"
-#
-# The following macros are also at your disposal if you want to complete the
-# DLL VERSIONINFO structure.
-# - PNG_USER_VERSIONINFO_COMMENTS
-# - PNG_USER_VERSIONINFO_COMPANYNAME
-# - PNG_USER_VERSIONINFO_LEGALTRADEMARKS
-
-# It is necessary to include configures definitions here so that AC_DEFINE
-# in configure.ac works in a comprehensible way
-@#if defined(HAVE_CONFIG_H) && !defined(PNG_NO_CONFIG_H)
-@# include "config.h"
-@#endif
-
-@#ifdef PNG_USER_CONFIG
-@# include "pngusr.h"
-@#endif
-
-# This is a special fixup for the Watcom C compiler on Windows, which has
-# multiple procedure call standards. Unless PNG_API_RULE is set explicitly
-# (i.e. if it is not defined at this point) it will be forced to '2' here when
-# using Watcom. This indicates to the other header files that Watcom behaviour
-# is required where appropriate.
-
-@#ifdef __WATCOMC__
-@# ifndef PNG_API_RULE
-@# define PNG_API_RULE 2 /* Use Watcom calling conventions */
-@# endif
-@#endif
-
-# IN DEVELOPMENT
-# These are currently experimental features; define them if you want (NOTE:
-# experimental options must be disabled before they are defined in this file!)
-
-# NONE
-
-# Note that PNG_USR_CONFIG only has an effect when building
-# pnglibconf.h
-
-setting USER_CONFIG
-setting USER_PRIVATEBUILD
-setting USER_DLLFNAME_POSTFIX
-setting USER_VERSIONINFO_COMMENTS
-setting USER_VERSIONINFO_COMPANYNAME
-setting USER_VERSIONINFO_LEGALTRADEMARKS
-
-# Record the 'API rule' used to select calling conventions on
-# those systems that support such things (see all the comments in
-# pngconf.h)
-# Changing this setting has a fundamental affect on the PNG ABI,
-# do not release shared libraries with this changed.
-
-setting API_RULE default 0
-
-# This allows a prefix to be added to the front of every API functon name (and
-# therefore every symbol) by redefining all the function names with the prefix
-# at the end of pnglibconf.h. It also turns on similar internal symbol renaming
-# by causing a similar build-time only file, pngprefix.h, to be generated.
-
-setting PREFIX
-
-# Default to using the read macros
-
-setting DEFAULT_READ_MACROS default 1
-
-# Implementation specific control of the optimizations, enabled by those
-# hardware or software options that need it (typically when run-time choices
-# must be made by the user)
-option SET_OPTION disabled
-
-# These options are specific to the ARM NEON hardware optimizations. At present
-# these optimizations depend on GCC specific pre-processing of an assembler (.S)
-# file so they probably won't work with other compilers.
-#
-# ARM_NEON_OPT: unset: check at compile time (__ARM_NEON__ must be defined by
-# the compiler, typically as a result of specifying
-# CC="gcc -mfpu=neon".)
-# 0: disable (even if the CPU has a NEON FPU.)
-# 1: check at run time (via ARM_NEON_{API,CHECK})
-# 2: switch on unconditionally (inadvisable - instead pass
-# -mfpu=neon to GCC in CC)
-# When building libpng avoid using any setting other than '0'; '1' is
-# set automatically when either 'API' or 'CHECK' are configured in,
-# '2' should not be necessary as -mfpu=neon will achieve the same
-# effect as well as applying NEON optimizations to the rest of the
-# libpng code.
-# NOTE: any setting other than '0' requires ALIGNED_MEMORY
-# ARM_NEON_API: (PNG_ARM_NEON == 1) allow the optimization to be switched on
-# with png_set_option
-# ARM_NEON_CHECK: (PNG_ARM_NEON == 1) compile a run-time check to see if Neon
-# extensions are supported, this is poorly supported and
-# deprectated - use the png_set_option API.
-setting ARM_NEON_OPT
-option ARM_NEON_API disabled requires ALIGNED_MEMORY enables SET_OPTION,
- sets ARM_NEON_OPT 1
-option ARM_NEON_CHECK disabled requires ALIGNED_MEMORY,
- sets ARM_NEON_OPT 1
-
-# These settings configure the default compression level (0-9) and 'strategy';
-# strategy is as defined by the implementors of zlib, it describes the input
-# data and modifies the zlib parameters in an attempt to optimize the balance
-# between search and huffman encoding in the zlib algorithms. The defaults are
-# the zlib.h defaults - the apparently recursive definition does not arise
-# because the name of the setting is prefixed by PNG_
-#
-# The TEXT values are the defaults when writing compressed text (all forms)
-#
-# Include the zlib header too, so that the defaults below are known
-@# include <zlib.h>
-
-# The '@' here means to substitute the value when pnglibconf.h is built
-setting Z_DEFAULT_COMPRESSION default @Z_DEFAULT_COMPRESSION
-setting Z_DEFAULT_STRATEGY default @Z_FILTERED
-setting Z_DEFAULT_NOFILTER_STRATEGY default @Z_DEFAULT_STRATEGY
-setting ZLIB_VERNUM default @ZLIB_VERNUM
-
-setting TEXT_Z_DEFAULT_COMPRESSION default @Z_DEFAULT_COMPRESSION
-setting TEXT_Z_DEFAULT_STRATEGY default @Z_DEFAULT_STRATEGY
-
-# The alternative is to call functions to read PNG values, if
-# the functions are turned *off* the read macros must always
-# be enabled, so turning this off will actually force the
-# USE_READ_MACROS option on (see pngconf.h)
-
-option READ_INT_FUNCTIONS requires READ
-
-# The same for write, but these can only be switched off if
-# no writing is required at all - hence the use of an 'enables'
-# not a 'requires' below:
-
-option WRITE_INT_FUNCTIONS disabled
-option WRITE enables WRITE_INT_FUNCTIONS
-
-# Error controls
-#
-# WARNINGS: normally on, if off no warnings are generated
-# ERROR_TEXT: normally on, if off errors happen but there is no message
-# ERROR_NUMBERS: unimplemented feature, therefore disabled
-# BENIGN_ERRORS: support for just issuing warnings for recoverable errors
-#
-# BENIGN_READ_ERRORS:
-# By default recoverable errors on read should just generate warnings,
-# generally safe but PNG files that don't conform to the specification will
-# be accepted if a meaningful result can be produced.
-#
-# BENIGN_WRITE_ERRORS:
-# By default recoverable errors on write should just generate warnings,
-# not generally safe because this allows the application to write invalid
-# PNG files. Applications should enable this themselves; it's useful
-# because it means that a failure to write an ancilliary chunk can often be
-# ignored.
-
-option WARNINGS
-option ERROR_TEXT
-option ERROR_NUMBERS disabled
-
-option BENIGN_ERRORS
-option BENIGN_WRITE_ERRORS requires BENIGN_ERRORS disabled
-option BENIGN_READ_ERRORS requires BENIGN_ERRORS
-
-
-# Generic options - affect both read and write.
-
-option MNG_FEATURES
-
-# Arithmetic options, the first is the big switch that chooses between internal
-# floating and fixed point arithmetic implementations - it does not affect any
-# APIs. The second two (the _POINT settings) switch off individual APIs.
-
-option FLOATING_ARITHMETIC
-option FLOATING_POINT enables ok_math
-option FIXED_POINT enables ok_math
-
-# The following is always on (defined empty)
-
-setting CALLOC_SUPPORTED default
-
-# This protects us against compilers that run on a windowing system
-# and thus don't have or would rather us not use the stdio types:
-# stdin, stdout, and stderr. The only one currently used is stderr
-# in png_error() and png_warning(). #defining PNG_NO_CONSOLE_IO will
-# prevent these from being compiled and used. #defining PNG_NO_STDIO
-# will also prevent these, plus will prevent the entire set of stdio
-# macros and functions (FILE *, printf, etc.) from being compiled and used,
-# unless (PNG_DEBUG > 0) has been #defined.
-
-option STDIO
-option CONSOLE_IO requires STDIO
-
-# Note: prior to 1.5.0 this option could not be disabled if STDIO
-# was enabled. Prior to 1.5.3 this option required STDIO
-
-option TIME_RFC1123
-
-# PNG_SETJMP_NOT_SUPPORTED is an old equivalent for NO_SETJMP
-
-option SETJMP
-= NO_SETJMP SETJMP_NOT_SUPPORTED
-
-# If this is disabled it is not possible for apps to get the
-# values from the 'info' structure, this effectively removes
-# quite a lot of the READ API.
-
-option EASY_ACCESS
-
-# Added at libpng-1.2.0
-
-option USER_MEM
-
-# Added at libpng-1.4.0
-
-option IO_STATE
-
-# This is only for PowerPC big-endian and 680x0 systems
-# some testing, not enabled by default.
-# NO LONGER USED
-
-#option READ_BIG_ENDIAN disabled
-
-# Allow users to control limits on what the READ code will
-# read:
-
-# Added at libpng-1.2.43; adds limit fields to png_struct,
-# allows some usages of these fields
-
-option USER_LIMITS
-
-# Added at libpng-1.2.6; adds setting APIs, allows additional
-# usage of this field (UTSL)
-
-option SET_USER_LIMITS requires USER_LIMITS
-
-# Feature added at libpng-1.4.0, this flag added at 1.4.1
-option SET_USER_LIMITS enables SET_CHUNK_CACHE_LIMIT
-# Feature added at libpng-1.4.1, this flag added at 1.4.1
-
-option SET_USER_LIMITS enables SET_CHUNK_MALLOC_LIMIT
-
-# Libpng limits.
-#
-# If these settings are *not* set libpng will not limit the size of
-# images or the size of data in ancilliary chunks. This does lead to
-# security issues if PNG files come from untrusted sources.
-setting USER_WIDTH_MAX
-setting USER_HEIGHT_MAX
-setting USER_CHUNK_CACHE_MAX
-setting USER_CHUNK_MALLOC_MAX
-
-# To default all these settings to values that are large but probably
-# safe turn the SAFE_LIMITS option on; this will cause the value in
-# pngpriv.h to be used. Individual values can also be set, simply set
-# them in pngusr.dfa with '@#define PNG_setting value' lines.
-option SAFE_LIMITS enables USER_LIMITS disabled
-= SAFE_LIMITS SAFE_LIMITS
-
-# All of the following options relate to code capabilities for
-# processing image data before creating a PNG or after reading one.
-# You can remove these capabilities safely and still be PNG
-# conformant, however the library that results is still non-standard.
-# See the comments above about how to change options and settings.
-
-# READ options
-#
-# WARNING: in libpng 1.5 maintained configuration compatibility with earlier
-# versions. In some cases turning off an option turned off other options, in
-# others it was ineffective unless dependent options were also turned off.
-# Libpng 1.6 changes this: in general if you turn off an option that affects
-# APIs it stays off and simply disables APIs that depend on it.
-#
-# As a result if you simply port the libpng 1.5 configuration to libpng 1.6 you
-# will probably see build failures due to missing APIs. Fixing these failures
-# requires some, perhaps considerable, knowledge of what your libpng using
-# applications are doing, fortunately there is no great reason for you to move
-# to libpng 1.6; the new interfaces in 1.6 will take several years to become
-# popular.
-
-option READ enables READ_INTERLACING SET_OPTION
-
-# Disabling READ_16BIT does not disable reading 16-bit PNG files, but it
-# forces them to be chopped down to 8-bit, and disables any 16-bit
-# processing after that has happened. You need to be sure to enable
-# READ_SCALE_16_TO_8 or READ_STRIP_16_TO_8 when you disable READ_16BIT for
-# this to work properly. You should disable the other option if you need to
-# ensure a particular conversion (otherwise the app can chose.)
-
-option READ_16BIT requires READ enables 16BIT
-
-option READ_QUANTIZE requires READ
-
-option READ_TRANSFORMS requires READ
-= NO_READ_TRANSFORMS READ_TRANSFORMS_NOT_SUPPORTED
-
-# Read gamma handling. Gamma processing is a core part of libpng and many of
-# the capabilities are dependent on libpng performing gamma correction.
-#
-# In libpng 1.6 disabling gamma processing (setting PNG_NO_READ_GAMMA)
-# consistently disables those parts of the API that depend on it. Prior to
-# 1.6.0 this was not true; the results were unpredictable and varied between
-# releases.
-#
-# If you disable gamma processing and your program no longer compiles you need
-# to ask whether you really need the APIs that are missing. If you do then you
-# almost certainly need the gamma processing.
-#
-# If you handle gamma issues outside libpng then you do not need the libpng
-# gamma processing; and it is an enormous waste of space. You just need to
-# remove the use of libpng APIs that depend on it.
-option READ_GAMMA requires READ_TRANSFORMS, READ_gAMA
-
-option READ_ALPHA_MODE requires READ_TRANSFORMS, READ_GAMMA
-option READ_BACKGROUND requires READ_TRANSFORMS, READ_STRIP_ALPHA, READ_GAMMA
-option READ_BGR requires READ_TRANSFORMS
-option READ_EXPAND_16 requires READ_TRANSFORMS, READ_16BIT, READ_EXPAND
-option READ_EXPAND requires READ_TRANSFORMS
-option READ_FILLER requires READ_TRANSFORMS
-option READ_GRAY_TO_RGB requires READ_TRANSFORMS
-option READ_INVERT_ALPHA requires READ_TRANSFORMS
-option READ_INVERT requires READ_TRANSFORMS
-option READ_PACK requires READ_TRANSFORMS
-option READ_PACKSWAP requires READ_TRANSFORMS
-option READ_RGB_TO_GRAY requires READ_TRANSFORMS, READ_GAMMA
-option READ_SCALE_16_TO_8 requires READ_TRANSFORMS
-option READ_SHIFT requires READ_TRANSFORMS
-option READ_STRIP_16_TO_8 requires READ_TRANSFORMS
-option READ_STRIP_ALPHA requires READ_TRANSFORMS
-option READ_SWAP_ALPHA requires READ_TRANSFORMS
-option READ_SWAP requires READ_TRANSFORMS, READ_16BIT
-option READ_USER_TRANSFORM requires READ_TRANSFORMS
-
-option PROGRESSIVE_READ requires READ
-option SEQUENTIAL_READ requires READ
-
-# You can define PNG_NO_PROGRESSIVE_READ if you don't do progressive reading.
-# This is not talking about interlacing capability! You'll still have
-# interlacing unless you turn off the following which is required
-# for PNG-compliant decoders. (In other words, do not do this - in
-# fact it can't be disabled from the command line!)
-#option READ_INTERLACING requires READ
-
-option READ_COMPOSITE_NODIV requires READ
-= NO_READ_COMPOSITE_NODIV NO_READ_COMPOSITED_NODIV
-
-# Inch conversions
-
-option INCH_CONVERSIONS
-= INCH_CONVERSIONS INCH_CONVERSIONS
-
-# API to build a grayscale palette
-
-option BUILD_GRAYSCALE_PALETTE
-
-# WRITE options
-
-option WRITE
-
-# Disabling WRITE_16BIT prevents 16-bit PNG files from being
-# generated.
-option WRITE_16BIT requires WRITE enables 16BIT
-
-option WRITE_TRANSFORMS requires WRITE
-= NO_WRITE_TRANSFORMS WRITE_TRANSFORMS_NOT_SUPPORTED
-
-option WRITE_SHIFT requires WRITE_TRANSFORMS
-option WRITE_PACK requires WRITE_TRANSFORMS
-option WRITE_BGR requires WRITE_TRANSFORMS
-option WRITE_SWAP requires WRITE_TRANSFORMS, WRITE_16BIT
-option WRITE_PACKSWAP requires WRITE_TRANSFORMS
-option WRITE_INVERT requires WRITE_TRANSFORMS
-option WRITE_FILLER requires WRITE_TRANSFORMS
-option WRITE_SWAP_ALPHA requires WRITE_TRANSFORMS
-option WRITE_INVERT_ALPHA requires WRITE_TRANSFORMS
-option WRITE_USER_TRANSFORM requires WRITE_TRANSFORMS
-
-# This is not required for PNG-compliant encoders, but can cause
-# trouble if left undefined
-
-option WRITE_INTERLACING requires WRITE
-
-# The following depends, internally, on WEIGHT_SHIFT and COST_SHIFT
-# where are set below.
-
-option WRITE_WEIGHTED_FILTER requires WRITE
-
-option WRITE_FLUSH requires WRITE
-
-# Note: these can be turned off explicitly if not required by the
-# apps implementing the user transforms
-option USER_TRANSFORM_PTR if READ_USER_TRANSFORM, WRITE_USER_TRANSFORM
-option USER_TRANSFORM_INFO if READ_USER_TRANSFORM, WRITE_USER_TRANSFORM
-
-# This enables API to set compression parameters for compressing
-# non-IDAT chunks (zTXt, iTXt, iCCP, and unknown chunks). This feature
-# was added at libpng-1.5.3.
-option WRITE_CUSTOMIZE_ZTXT_COMPRESSION requires WRITE
-
-# Any chunks you are not interested in, you can undef here. The
-# ones that allocate memory may be expecially important (hIST,
-# tEXt, zTXt, tRNS, pCAL). Others will just save time and make png_info
-# a bit smaller.
-
-# The size of the png_text structure changed in libpng-1.0.6 when
-# iTXt support was added. iTXt support was turned off by default through
-# libpng-1.2.x, to support old apps that malloc the png_text structure
-# instead of calling png_set_text() and letting libpng malloc it. It
-# was turned on by default in libpng-1.4.0.
-
-option READ_ANCILLARY_CHUNKS requires READ
-# PNG_READ_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated.
-= NO_READ_ANCILLARY_CHUNKS READ_ANCILLARY_CHUNKS_NOT_SUPPORTED
-
-option WRITE_ANCILLARY_CHUNKS requires WRITE
-# PNG_WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED is deprecated.
-= NO_WRITE_ANCILLARY_CHUNKS WRITE_ANCILLARY_CHUNKS_NOT_SUPPORTED
-
-# These options disable *all* the text chunks if turned off
-
-option READ_TEXT requires READ_ANCILLARY_CHUNKS enables TEXT
-option WRITE_TEXT requires WRITE_ANCILLARY_CHUNKS enables TEXT
-
-# Moved to pnglibconf.h at libpng-1.5.0
-# Feature support: in 1.4 this was in pngconf.h, but the following
-# features have no affect on the libpng API. Add library
-# only features to the end of this list. Add features that
-# affect the API above. (Note: the list of chunks follows
-# the library-only settings.)
-#
-# BUILD TIME ONLY OPTIONS
-# These options do not affect the API but rather alter how the
-# API is implemented, they get recorded in pnglibconf.h, but
-# can't be changed by the application.
-
-# Colorspace support (enabled as required); just the support for colorant
-# information. Gamma support, likewise, is just support for the gamma
-# information, READ_GAMMA is required for gamma transformations (so it
-# is possible to read PNG gamma without enabling all the libpng transform
-# code - do this for applications that do their own gamma processing)
-#
-# As of 1.6.0 COLORSPACE is only useful if the application processes the
-# information; this is because the library does not do any colorspace
-# processing, it just validates the data in the PNG file.
-
-option GAMMA disabled
-option COLORSPACE enables GAMMA disabled
-
-# When an ICC profile is read, or png_set, it will be checked for a match
-# against known sRGB profiles if the sRGB handling is enabled. This
-# setting controls how much work is done during the check:
-#
-# 0: Just validate the profile MD5 signature if present, otherwise use
-# the checks in option 1.
-#
-# 1: Additionally check the length, intent and adler32 checksum of the
-# actual data. If enabled this will reject known profiles that have
-# had the rendering intent in the header changed as well as other edits
-# done without updating the checksum. See the discussion below.
-#
-# 2: Additionally checksum all the data using the ethernet CRC32 algorithm.
-# This makes it more difficult to fake profiles and makes it less likely
-# to get a false positive on profiles with no signature, but is probably
-# just a waste of time since all currently approved ICC sRGB profiles have
-# a secure MD5 signature.
-#
-# The rendering intent. An ICC profile stores an intended rendering intent,
-# but does not include the value in the signature. The intent is documented
-# as the intent that should be used when combining two profiles. The sRGB
-# profile is intended, however, to be used with any of the four defined intents.
-# For this reason the sRGB chunk includes an 'intent' to be used when displaying
-# the image (intent is really a property of the image not the profile.)
-#
-# Unfortunately the iCCP chunk does not. It may therefore be that some
-# applications modify the intent in profiles (including sRGB profiles) to work
-# round this problem. Selecting an option other than option '0' will cause such
-# modified profiles to be rejected.
-#
-# Security. The use of Adler32 and CRC32 checksums does not help significantly
-# with any security issues. It is relatively easy to produce arbitrary profiles
-# with the required checksums on current computer systems. Nevertheless
-# security does not seem to be an issue because the only consequence of a false
-# positive is a false assertion that the profile is an sRGB profile. This might
-# be used to hide data from libpng using applications, but it doesn't seem
-# possible to damage them.
-
-setting sRGB_PROFILE_CHECKS default 2
-
-# Artificially align memory - the code typically aligns to 8 byte
-# boundaries if this is switched on, it's a small waste of space
-# but can help (in theory) on some architectures. Only affects
-# internal structures. Added at libpng 1.4.0
-
-option ALIGNED_MEMORY
-
-# Buggy compilers (e.g., gcc 2.7.2.2) need PNG_NO_POINTER_INDEXING
-# See png[wr]util.c, normally this should always be *on*
-
-option POINTER_INDEXING
-
-# Other defines for things like memory and the like can go here.
-
-# BUILD TIME SETTINGS
-# Like build time options these do not affect the API, but they
-# may be useful to applications because they record details of
-# how the API will behave particularly with regard to overall
-# accuracy.
-
-# This controls how fine the quantizing gets. As this allocates
-# a largish chunk of memory (32K), those who are not as concerned
-# with quantizing quality can decrease some or all of these.
-
-setting QUANTIZE_RED_BITS default 5
-setting QUANTIZE_GREEN_BITS default 5
-setting QUANTIZE_BLUE_BITS default 5
-
-# This controls how fine the gamma correction becomes when you
-# are only interested in 8 bits anyway. Increasing this value
-# results in more memory being used, and more pow() functions
-# being called to fill in the gamma tables. Don't set this value
-# less then 8, and even that may not work (I haven't tested it).
-
-setting MAX_GAMMA_8 default 11
-
-# This controls how much a difference in gamma we can tolerate before
-# we actually start doing gamma conversion, it's a fixed point value,
-# so the default below is 0.05, meaning libpng ignores corrections in
-# the range 0.95 to 1.05
-
-setting GAMMA_THRESHOLD_FIXED default 5000
-
-# Scaling factor for filter heuristic weighting calculations
-
-setting WEIGHT_SHIFT default 8
-setting COST_SHIFT default 3
-
-# Precision to use when converting a floating point value to a PNG
-# extension format string in an sCAL chunk (only relevant if the
-# floating point API is enabled)
-
-setting sCAL_PRECISION default 5
-
-# This is the size of the compression buffer, and thus the size of
-# an IDAT chunk. Make this whatever size you feel is best for your
-# machine. One of these will be allocated per png_struct. When this
-# is full, it writes the data to the disk, and does some other
-# calculations. Making this an extremely small size may slow
-# the library down, but you may want to experiment to determine
-# where it becomes significant, if you are concerned with memory
-# usage. Note that zlib allocates at least 32Kb also. For readers,
-# this describes the size of the buffer available to read the data in.
-# Unless this gets smaller than the size of a row (compressed),
-# it should not make much difference how big this is.
-
-setting ZBUF_SIZE default 8192
-
-# This is the size of the decompression buffer used when counting or checking
-# the decompressed size of an LZ stream from a compressed ancilliary chunk; the
-# decompressed data is never used so a different size may be optimal. This size
-# was determined using contrib/libtests/timepng.c with compressed zTXt data
-# around 11MByte in size. Slight speed improvements (up to about 14% in
-# timepng) can be achieved by very large increases (to 32kbyte) on regular data,
-# but highly compressible data shows only around 2% improvement. The size is
-# chosen to minimize the effects of DoS attacks based on using very large
-# amounts of highly compressible data.
-
-setting INFLATE_BUF_SIZE default 1024
-
-# This is the maximum amount of IDAT data that the sequential reader will
-# process at one time. The setting does not affect the size of IDAT chunks
-# read, just the amount read at once. Neither does it affect the progressive
-# reader, which processes just the amount of data the application gives it.
-# The sequential reader is currently unable to process more than one IDAT at
-# once - it has to read and process each one in turn. There is no point setting
-# this to a value larger than the IDAT chunks typically encountered (it would
-# just waste memory) but there may be some point in reducing it below the value
-# of ZBUF_SIZE (the size of IDAT chunks written by libpng.)
-
-setting IDAT_READ_SIZE default PNG_ZBUF_SIZE
-
-# Ancillary chunks
-chunk bKGD
-chunk cHRM enables COLORSPACE
-chunk gAMA enables GAMMA
-chunk hIST
-chunk iCCP enables COLORSPACE, GAMMA
-chunk iTXt
-chunk oFFs
-chunk pCAL
-chunk pHYs
-chunk sBIT
-chunk sCAL
-chunk sPLT
-chunk sRGB enables COLORSPACE, GAMMA
-chunk tEXt requires TEXT
-chunk tIME
-chunk tRNS
-chunk zTXt
-
-# This only affects support of the optional PLTE chunk in RGB and RGBA
-# images. Notice that READ_ANCILLARY_CHUNKS therefore disables part
-# of the regular chunk reading too.
-
-option READ_OPT_PLTE requires READ_ANCILLARY_CHUNKS
-
-# Unknown chunk handling
-#
-# 'UNKNOWN_CHUNKS' is a global option to disable all unknown chunk handling on
-# read or write; everything else below requires it (directly or indirectly).
-option UNKNOWN_CHUNKS
-
-# There are three main options to control the ability to read and write unknown
-# chunks. If either read option is turned on then unknown chunks will be read,
-# otherwise they are skipped. If the write option is turned on unknown chunks
-# set by png_set_unknown_chunks will be written otherwise it is an error to call
-# that API on a write struct.
-option WRITE_UNKNOWN_CHUNKS requires WRITE requires UNKNOWN_CHUNKS
-option WRITE_UNKNOWN_CHUNKS enables STORE_UNKNOWN_CHUNKS
-
-# The first way to read user chunks is to have libpng save them for a later call
-# to png_get_unknown_chunks, the application must call
-# png_set_keep_unknown_chunks to cause this to actually happen (see png.h)
-option SAVE_UNKNOWN_CHUNKS requires READ requires SET_UNKNOWN_CHUNKS
-option SAVE_UNKNOWN_CHUNKS enables READ_UNKNOWN_CHUNKS, STORE_UNKNOWN_CHUNKS
-
-# The second approach is to use an application provided callback to process the
-# chunks, the callback can either handle the chunk entirely itself or request
-# that libpng store the chunk for later retrieval via png_get_unknown_chunks.
-#
-# Note that there is no 'WRITE_USER_CHUNKS' so the USER_CHUNKS option is always
-# the same as READ_USER_CHUNKS at present
-option READ_USER_CHUNKS requires READ, UNKNOWN_CHUNKS
-option READ_USER_CHUNKS enables READ_UNKNOWN_CHUNKS, USER_CHUNKS
-
-# Two further options are provided to allow detailed control of the handling.
-# The first enables png_set_keep_unknown_chunks; this allows the default to be
-# changed from discarding unknown chunks and allows per-chunk control. This is
-# required to use the SAVE_UNKNOWN_CHUNKS option. If enabled this option also
-# applies to write (see png.h), otherwise the write API simply writes all the
-# chunks it is given.
-#
-# The second option extends the unknown handling to allow known chunks to be
-# handled as though they were unknown. This option doesn't change any APIs, it
-# merely turns on the code to check known as well as unknown chunks.
-#
-# This option no longer affects the write code. It can be safely disabled and
-# will prevent applications stopping libpng reading known chunks.
-option SET_UNKNOWN_CHUNKS requires UNKNOWN_CHUNKS
-option HANDLE_AS_UNKNOWN requires SET_UNKNOWN_CHUNKS
-
-# The following options are derived from the above and should not be turned on
-# explicitly.
-option READ_UNKNOWN_CHUNKS requires UNKNOWN_CHUNKS disabled
-option STORE_UNKNOWN_CHUNKS requires UNKNOWN_CHUNKS disabled
-
-option CONVERT_tIME requires WRITE_ANCILLARY_CHUNKS
-# The "tm" structure is not supported on WindowsCE
-
-@#ifdef _WIN32_WCE
-@# define PNG_NO_CONVERT_tIME
-@#endif
-
-option WRITE_FILTER requires WRITE
-
-option SAVE_INT_32 disabled
-# png_save_int_32 is required internally for writing the ancillary chunks oFFs
-# and pCAL and for both reading and writing iCCP (for the generation/checking of
-# the corresponding cHRM/gAMA chunks) if full ICC is supported.
-
-# added at libpng-1.5.4
-
-option WRITE_OPTIMIZE_CMF requires WRITE
-
-option READ_COMPRESSED_TEXT disabled
-option READ_iCCP enables READ_COMPRESSED_TEXT
-option READ_iTXt enables READ_COMPRESSED_TEXT
-option READ_zTXt enables READ_COMPRESSED_TEXT
-option READ_COMPRESSED_TEXT enables READ_TEXT
-
-option WRITE_oFFs enables SAVE_INT_32
-option WRITE_pCAL enables SAVE_INT_32
-
-option WRITE_COMPRESSED_TEXT disabled
-option WRITE_iCCP enables WRITE_COMPRESSED_TEXT
-option WRITE_iTXt enables WRITE_COMPRESSED_TEXT
-option WRITE_zTXt enables WRITE_COMPRESSED_TEXT
-option WRITE_COMPRESSED_TEXT enables WRITE_TEXT
-
-# Turn this off to disable png_read_png() and png_write_png() and
-# leave the row_pointers member out of the info structure.
-
-option INFO_IMAGE
-
-# added at libpng-1.5.10
-# Turn this off to disable warning about invalid palette index and
-# leave the num_palette_max member out of the png structure.
-
-option CHECK_FOR_INVALID_INDEX enables READ_CHECK_FOR_INVALID_INDEX
-option CHECK_FOR_INVALID_INDEX enables WRITE_CHECK_FOR_INVALID_INDEX
-option READ_CHECK_FOR_INVALID_INDEX requires READ, CHECK_FOR_INVALID_INDEX
-option WRITE_CHECK_FOR_INVALID_INDEX requires WRITE, CHECK_FOR_INVALID_INDEX
-
-# added at libpng-1.5.15
-option GET_PALETTE_MAX enables READ_GET_PALETTE_MAX WRITE_GET_PALETTE_MAX
-option READ_GET_PALETTE_MAX requires READ_CHECK_FOR_INVALID_INDEX disabled
-option WRITE_GET_PALETTE_MAX requires WRITE_CHECK_FOR_INVALID_INDEX disabled
-
-# Simplified API options (added at libpng-1.6.0)
-# Read:
-option SIMPLIFIED_READ,
- requires SEQUENTIAL_READ READ_TRANSFORMS, SETJMP, BENIGN_ERRORS READ_GAMMA,
- enables READ_EXPAND, READ_16BIT READ_EXPAND_16, READ_SCALE_16_TO_8,
- READ_RGB_TO_GRAY, READ_ALPHA_MODE READ_BACKGROUND READ_STRIP_ALPHA,
- READ_FILLER, READ_SWAP
-
-option SIMPLIFIED_READ_AFIRST requires SIMPLIFIED_READ disabled
-option READ_SWAP_ALPHA enables SIMPLIFIED_READ_AFIRST
-
-option SIMPLIFIED_READ_BGR requires SIMPLIFIED_READ disabled
-option READ_BGR enables SIMPLIFIED_READ_BGR
-
-# Write:
-option SIMPLIFIED_WRITE,
- requires WRITE STDIO, SETJMP,
- enables WRITE_SWAP WRITE_gAMA, WRITE_sRGB WRITE_cHRM
-
-option SIMPLIFIED_WRITE_AFIRST requires SIMPLIFIED_WRITE disabled
-option WRITE_SWAP_ALPHA enables SIMPLIFIED_WRITE_AFIRST
-
-option SIMPLIFIED_WRITE_BGR requires SIMPLIFIED_WRITE disabled
-option WRITE_BGR enables SIMPLIFIED_WRITE_BGR
-
-# Formats:
-option FORMAT_AFIRST if SIMPLIFIED_READ_AFIRST, SIMPLIFIED_WRITE_AFIRST
-option FORMAT_BGR if SIMPLIFIED_READ_BGR, SIMPLIFIED_WRITE_BGR
+++ /dev/null
-/* libpng 1.6.3 STANDARD API DEFINITION */
-
-/* pnglibconf.h - library build configuration */
-
-/* Libpng version 1.6.3 - July 18, 2013 */
-
-/* Copyright (c) 1998-2013 Glenn Randers-Pehrson */
-
-/* This code is released under the libpng license. */
-/* For conditions of distribution and use, see the disclaimer */
-/* and license in png.h */
-
-/* pnglibconf.h */
-/* Machine generated file: DO NOT EDIT */
-/* Derived from: scripts/pnglibconf.dfa */
-#ifndef PNGLCONF_H
-#define PNGLCONF_H
-/* options */
-#define PNG_16BIT_SUPPORTED
-#define PNG_ALIGNED_MEMORY_SUPPORTED
-/*#undef PNG_ARM_NEON_API_SUPPORTED*/
-/*#undef PNG_ARM_NEON_CHECK_SUPPORTED*/
-#define PNG_BENIGN_ERRORS_SUPPORTED
-#define PNG_BENIGN_READ_ERRORS_SUPPORTED
-/*#undef PNG_BENIGN_WRITE_ERRORS_SUPPORTED*/
-#define PNG_BUILD_GRAYSCALE_PALETTE_SUPPORTED
-#define PNG_CHECK_FOR_INVALID_INDEX_SUPPORTED
-#define PNG_COLORSPACE_SUPPORTED
-#define PNG_CONSOLE_IO_SUPPORTED
-#define PNG_CONVERT_tIME_SUPPORTED
-#define PNG_EASY_ACCESS_SUPPORTED
-/*#undef PNG_ERROR_NUMBERS_SUPPORTED*/
-#define PNG_ERROR_TEXT_SUPPORTED
-#define PNG_FIXED_POINT_SUPPORTED
-#define PNG_FLOATING_ARITHMETIC_SUPPORTED
-#define PNG_FLOATING_POINT_SUPPORTED
-#define PNG_FORMAT_AFIRST_SUPPORTED
-#define PNG_FORMAT_BGR_SUPPORTED
-#define PNG_GAMMA_SUPPORTED
-#define PNG_GET_PALETTE_MAX_SUPPORTED
-#define PNG_HANDLE_AS_UNKNOWN_SUPPORTED
-#define PNG_INCH_CONVERSIONS_SUPPORTED
-#define PNG_INFO_IMAGE_SUPPORTED
-#define PNG_IO_STATE_SUPPORTED
-#define PNG_MNG_FEATURES_SUPPORTED
-#define PNG_POINTER_INDEXING_SUPPORTED
-#define PNG_PROGRESSIVE_READ_SUPPORTED
-#define PNG_READ_16BIT_SUPPORTED
-#define PNG_READ_ALPHA_MODE_SUPPORTED
-#define PNG_READ_ANCILLARY_CHUNKS_SUPPORTED
-#define PNG_READ_BACKGROUND_SUPPORTED
-#define PNG_READ_BGR_SUPPORTED
-#define PNG_READ_CHECK_FOR_INVALID_INDEX_SUPPORTED
-#define PNG_READ_COMPOSITE_NODIV_SUPPORTED
-#define PNG_READ_COMPRESSED_TEXT_SUPPORTED
-#define PNG_READ_EXPAND_16_SUPPORTED
-#define PNG_READ_EXPAND_SUPPORTED
-#define PNG_READ_FILLER_SUPPORTED
-#define PNG_READ_GAMMA_SUPPORTED
-#define PNG_READ_GET_PALETTE_MAX_SUPPORTED
-#define PNG_READ_GRAY_TO_RGB_SUPPORTED
-#define PNG_READ_INTERLACING_SUPPORTED
-#define PNG_READ_INT_FUNCTIONS_SUPPORTED
-#define PNG_READ_INVERT_ALPHA_SUPPORTED
-#define PNG_READ_INVERT_SUPPORTED
-#define PNG_READ_OPT_PLTE_SUPPORTED
-#define PNG_READ_PACKSWAP_SUPPORTED
-#define PNG_READ_PACK_SUPPORTED
-#define PNG_READ_QUANTIZE_SUPPORTED
-#define PNG_READ_RGB_TO_GRAY_SUPPORTED
-#define PNG_READ_SCALE_16_TO_8_SUPPORTED
-#define PNG_READ_SHIFT_SUPPORTED
-#define PNG_READ_STRIP_16_TO_8_SUPPORTED
-#define PNG_READ_STRIP_ALPHA_SUPPORTED
-#define PNG_READ_SUPPORTED
-#define PNG_READ_SWAP_ALPHA_SUPPORTED
-#define PNG_READ_SWAP_SUPPORTED
-#define PNG_READ_TEXT_SUPPORTED
-#define PNG_READ_TRANSFORMS_SUPPORTED
-#define PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
-#define PNG_READ_USER_CHUNKS_SUPPORTED
-#define PNG_READ_USER_TRANSFORM_SUPPORTED
-#define PNG_READ_bKGD_SUPPORTED
-#define PNG_READ_cHRM_SUPPORTED
-#define PNG_READ_gAMA_SUPPORTED
-#define PNG_READ_hIST_SUPPORTED
-#define PNG_READ_iCCP_SUPPORTED
-#define PNG_READ_iTXt_SUPPORTED
-#define PNG_READ_oFFs_SUPPORTED
-#define PNG_READ_pCAL_SUPPORTED
-#define PNG_READ_pHYs_SUPPORTED
-#define PNG_READ_sBIT_SUPPORTED
-#define PNG_READ_sCAL_SUPPORTED
-#define PNG_READ_sPLT_SUPPORTED
-#define PNG_READ_sRGB_SUPPORTED
-#define PNG_READ_tEXt_SUPPORTED
-#define PNG_READ_tIME_SUPPORTED
-#define PNG_READ_tRNS_SUPPORTED
-#define PNG_READ_zTXt_SUPPORTED
-/*#undef PNG_SAFE_LIMITS_SUPPORTED*/
-#define PNG_SAVE_INT_32_SUPPORTED
-#define PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
-#define PNG_SEQUENTIAL_READ_SUPPORTED
-#define PNG_SETJMP_SUPPORTED
-#define PNG_SET_CHUNK_CACHE_LIMIT_SUPPORTED
-#define PNG_SET_CHUNK_MALLOC_LIMIT_SUPPORTED
-#define PNG_SET_OPTION_SUPPORTED
-#define PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
-#define PNG_SET_USER_LIMITS_SUPPORTED
-#define PNG_SIMPLIFIED_READ_AFIRST_SUPPORTED
-#define PNG_SIMPLIFIED_READ_BGR_SUPPORTED
-#define PNG_SIMPLIFIED_READ_SUPPORTED
-#define PNG_SIMPLIFIED_WRITE_AFIRST_SUPPORTED
-#define PNG_SIMPLIFIED_WRITE_BGR_SUPPORTED
-#define PNG_SIMPLIFIED_WRITE_SUPPORTED
-#define PNG_STDIO_SUPPORTED
-#define PNG_STORE_UNKNOWN_CHUNKS_SUPPORTED
-#define PNG_TEXT_SUPPORTED
-#define PNG_TIME_RFC1123_SUPPORTED
-#define PNG_UNKNOWN_CHUNKS_SUPPORTED
-#define PNG_USER_CHUNKS_SUPPORTED
-#define PNG_USER_LIMITS_SUPPORTED
-#define PNG_USER_MEM_SUPPORTED
-#define PNG_USER_TRANSFORM_INFO_SUPPORTED
-#define PNG_USER_TRANSFORM_PTR_SUPPORTED
-#define PNG_WARNINGS_SUPPORTED
-#define PNG_WRITE_16BIT_SUPPORTED
-#define PNG_WRITE_ANCILLARY_CHUNKS_SUPPORTED
-#define PNG_WRITE_BGR_SUPPORTED
-#define PNG_WRITE_CHECK_FOR_INVALID_INDEX_SUPPORTED
-#define PNG_WRITE_COMPRESSED_TEXT_SUPPORTED
-#define PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
-#define PNG_WRITE_FILLER_SUPPORTED
-#define PNG_WRITE_FILTER_SUPPORTED
-#define PNG_WRITE_FLUSH_SUPPORTED
-#define PNG_WRITE_GET_PALETTE_MAX_SUPPORTED
-#define PNG_WRITE_INTERLACING_SUPPORTED
-#define PNG_WRITE_INT_FUNCTIONS_SUPPORTED
-#define PNG_WRITE_INVERT_ALPHA_SUPPORTED
-#define PNG_WRITE_INVERT_SUPPORTED
-#define PNG_WRITE_OPTIMIZE_CMF_SUPPORTED
-#define PNG_WRITE_PACKSWAP_SUPPORTED
-#define PNG_WRITE_PACK_SUPPORTED
-#define PNG_WRITE_SHIFT_SUPPORTED
-#define PNG_WRITE_SUPPORTED
-#define PNG_WRITE_SWAP_ALPHA_SUPPORTED
-#define PNG_WRITE_SWAP_SUPPORTED
-#define PNG_WRITE_TEXT_SUPPORTED
-#define PNG_WRITE_TRANSFORMS_SUPPORTED
-#define PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
-#define PNG_WRITE_USER_TRANSFORM_SUPPORTED
-#define PNG_WRITE_WEIGHTED_FILTER_SUPPORTED
-#define PNG_WRITE_bKGD_SUPPORTED
-#define PNG_WRITE_cHRM_SUPPORTED
-#define PNG_WRITE_gAMA_SUPPORTED
-#define PNG_WRITE_hIST_SUPPORTED
-#define PNG_WRITE_iCCP_SUPPORTED
-#define PNG_WRITE_iTXt_SUPPORTED
-#define PNG_WRITE_oFFs_SUPPORTED
-#define PNG_WRITE_pCAL_SUPPORTED
-#define PNG_WRITE_pHYs_SUPPORTED
-#define PNG_WRITE_sBIT_SUPPORTED
-#define PNG_WRITE_sCAL_SUPPORTED
-#define PNG_WRITE_sPLT_SUPPORTED
-#define PNG_WRITE_sRGB_SUPPORTED
-#define PNG_WRITE_tEXt_SUPPORTED
-#define PNG_WRITE_tIME_SUPPORTED
-#define PNG_WRITE_tRNS_SUPPORTED
-#define PNG_WRITE_zTXt_SUPPORTED
-#define PNG_bKGD_SUPPORTED
-#define PNG_cHRM_SUPPORTED
-#define PNG_gAMA_SUPPORTED
-#define PNG_hIST_SUPPORTED
-#define PNG_iCCP_SUPPORTED
-#define PNG_iTXt_SUPPORTED
-#define PNG_oFFs_SUPPORTED
-#define PNG_pCAL_SUPPORTED
-#define PNG_pHYs_SUPPORTED
-#define PNG_sBIT_SUPPORTED
-#define PNG_sCAL_SUPPORTED
-#define PNG_sPLT_SUPPORTED
-#define PNG_sRGB_SUPPORTED
-#define PNG_tEXt_SUPPORTED
-#define PNG_tIME_SUPPORTED
-#define PNG_tRNS_SUPPORTED
-#define PNG_zTXt_SUPPORTED
-/* end of options */
-/* settings */
-#define PNG_API_RULE 0
-#define PNG_CALLOC_SUPPORTED
-#define PNG_COST_SHIFT 3
-#define PNG_DEFAULT_READ_MACROS 1
-#define PNG_GAMMA_THRESHOLD_FIXED 5000
-#define PNG_IDAT_READ_SIZE PNG_ZBUF_SIZE
-#define PNG_INFLATE_BUF_SIZE 1024
-#define PNG_MAX_GAMMA_8 11
-#define PNG_QUANTIZE_BLUE_BITS 5
-#define PNG_QUANTIZE_GREEN_BITS 5
-#define PNG_QUANTIZE_RED_BITS 5
-#define PNG_TEXT_Z_DEFAULT_COMPRESSION (-1)
-#define PNG_TEXT_Z_DEFAULT_STRATEGY 0
-#define PNG_WEIGHT_SHIFT 8
-#define PNG_ZBUF_SIZE 8192
-#define PNG_ZLIB_VERNUM 0 /* unknown */
-#define PNG_Z_DEFAULT_COMPRESSION (-1)
-#define PNG_Z_DEFAULT_NOFILTER_STRATEGY 0
-#define PNG_Z_DEFAULT_STRATEGY 1
-#define PNG_sCAL_PRECISION 5
-#define PNG_sRGB_PROFILE_CHECKS 2
-/* end of settings */
-#endif /* PNGLCONF_H */
+++ /dev/null
-#!/usr/bin/make -f
-# pnglibconf.mak - standard make lines for pnglibconf.h
-#
-# These lines are copied from Makefile.am, they illustrate
-# how to automate the build of pnglibconf.h from scripts/pnglibconf.dfa
-# given just 'awk', a C preprocessor and standard command line utilities
-
-# Override as appropriate, these definitions can be overridden on
-# the make command line (AWK='nawk' for example).
-AWK = gawk
-AWK = mawk
-AWK = nawk
-AWK = one-true-awk
-AWK = awk # Crashes on SunOS 5.10 - use 'nawk'
-CPP = $(CC) -E # On SUN OS 5.10 if this causes problems use /lib/cpp
-
-MOVE = mv
-DELETE = rm -f
-ECHO = echo
-DFA_XTRA = # Put your configuration file here, see scripts/pnglibconf.dfa. Eg:
-# DFA_XTRA = pngusr.dfa
-
-# CPPFLAGS should contain the options to control the result,
-# but DEFS and CFLAGS are also supported here, override
-# as appropriate
-DFNFLAGS = $(DEFS) $(CPPFLAGS) $(CFLAGS)
-
-# srcdir is a defacto standard for the location of the source
-srcdir = .
-
-# The standard pnglibconf.h exists as scripts/pnglibconf.h.prebuilt,
-# copy this if the following doesn't work.
-pnglibconf.h: pnglibconf.dfn
- $(DELETE) $@ pnglibconf.c pnglibconf.out pnglibconf.tmp
- $(ECHO) '#include "pnglibconf.dfn"' >pnglibconf.c
- $(ECHO) "If '$(CC) -E' crashes try /lib/cpp (e.g. CPP='/lib/cpp')" >&2
- $(CPP) $(DFNFLAGS) pnglibconf.c >pnglibconf.out
- $(AWK) -f "$(srcdir)/scripts/dfn.awk" out="pnglibconf.tmp" pnglibconf.out 1>&2
- $(MOVE) pnglibconf.tmp $@
-
-pnglibconf.dfn: $(srcdir)/scripts/pnglibconf.dfa $(srcdir)/scripts/options.awk $(srcdir)/pngconf.h $(srcdir)/pngusr.dfa $(DFA_XTRA)
- $(DELETE) $@ pnglibconf.pre pnglibconf.tmp
- $(ECHO) "Calling $(AWK) from scripts/pnglibconf.mak" >&2
- $(ECHO) "If 'awk' crashes try a better awk (e.g. AWK='nawk')" >&2
- $(AWK) -f $(srcdir)/scripts/options.awk out="pnglibconf.pre"\
- version=search $(srcdir)/pngconf.h $(srcdir)/scripts/pnglibconf.dfa\
- $(srcdir)/pngusr.dfa $(DFA_XTRA) 1>&2
- $(AWK) -f $(srcdir)/scripts/options.awk out="pnglibconf.tmp" pnglibconf.pre 1>&2
- $(MOVE) pnglibconf.tmp $@
-
-clean-pnglibconf:
- $(DELETE) pnglibconf.*
-
-clean: clean-pnglibconf
+++ /dev/null
-#define PNG_VERSION_INFO_ONLY
-
-#include <windows.h>
-#include "../png.h"
-
-#define _QUOTE(x) # x
-#define QUOTE(x) _QUOTE(x)
-
-#define PNG_LIBPNG_DLLFNAME "LIBPNG"
-
-/* Support deprecated PRIVATEBUILD macro */
-#if defined(PRIVATEBUILD) && !defined(PNG_USER_PRIVATEBUILD)
-# define PNG_USER_PRIVATEBUILD PRIVATEBUILD
-#endif
-
-#if defined(PNG_USER_DLLFNAME_POSTFIX) && !defined(PNG_USER_PRIVATEBUILD)
-# error "PNG_USER_PRIVATEBUILD must be defined as a string describing the\
- custom changes made to the library."
-#endif
-
-/* Prioritize PNG_USER_x over PNG_LIBPNG_x */
-#ifdef PNG_USER_DLLFNAME_POSTFIX
-# undef PNG_LIBPNG_DLLFNAME_POSTFIX
-# define PNG_LIBPNG_DLLFNAME_POSTFIX PNG_USER_DLLFNAME_POSTFIX
-#endif
-
-#ifdef PNG_USER_VERSIONINFO_COMMENTS
-# undef PNG_LIBPNG_VERSIONINFO_COMMENTS
-# define PNG_LIBPNG_VERSIONINFO_COMMENTS PNG_USER_VERSIONINFO_COMMENTS
-#endif
-
-#if defined(PNG_DEBUG) && (PNG_DEBUG > 0)
-# define VS_DEBUG VS_FF_DEBUG
-# ifndef PNG_LIBPNG_DLLFNAME_POSTFIX
-# define PNG_LIBPNG_DLLFNAME_POSTFIX "D"
-# endif /* PNG_LIBPNG_DLLFNAME_POSTFIX */
-# ifndef PNG_LIBPNG_VERSIONINFO_COMMENTS
-# define PNG_LIBPNG_VERSIONINFO_COMMENTS "PNG_DEBUG=" QUOTE(PNG_DEBUG)
-# endif /* PNG_LIBPNG_VERSIONINFO_COMMENTS */
-#else
-# define VS_DEBUG 0
-# ifndef PNG_LIBPNG_DLLFNAME_POSTFIX
-# define PNG_LIBPNG_DLLFNAME_POSTFIX
-# endif /* PNG_LIBPNG_DLLFNAME_POSTFIX */
-#endif /* defined(DEBUG)... */
-
-#ifdef PNG_USER_PRIVATEBUILD
-# define VS_PRIVATEBUILD VS_FF_PRIVATEBUILD
-#else
-# define VS_PRIVATEBUILD 0
-#endif /* PNG_USER_PRIVATEBUILD */
-
-#ifdef PNG_LIBPNG_SPECIALBUILD
-# define VS_SPECIALBUILD VS_FF_SPECIALBUILD
-#else
-# define VS_SPECIALBUILD 0
-#endif /* PNG_LIBPNG_BUILD_SPECIAL */
-
-#if ((PNG_LIBPNG_BUILD_BASE_TYPE & PNG_LIBPNG_RELEASE_STATUS_MASK) !=\
- PNG_LIBPNG_BUILD_STABLE)
-# define VS_PRERELEASE VS_FF_PRERELEASE
-# define VS_PATCHED 0
-#else
-# define VS_PRERELEASE 0
-# if (PNG_LIBPNG_BUILD_BASE_TYPE & PNG_LIBPNG_BUILD_PATCHED)
-# define VS_PATCHED VS_FF_PATCHED
-# else
-# define VS_PATCHED 0
-# endif
-#endif
-
-VS_VERSION_INFO VERSIONINFO
-FILEVERSION PNG_LIBPNG_VER_MAJOR, PNG_LIBPNG_VER_MINOR, PNG_LIBPNG_VER_RELEASE, PNG_LIBPNG_VER_BUILD
-PRODUCTVERSION PNG_LIBPNG_VER_MAJOR, PNG_LIBPNG_VER_MINOR, PNG_LIBPNG_VER_RELEASE, PNG_LIBPNG_VER_BUILD
-FILEFLAGSMASK VS_FFI_FILEFLAGSMASK
-FILEFLAGS VS_DEBUG | VS_PRIVATEBUILD | VS_SPECIALBUILD | VS_PRERELEASE | VS_PATCHED
-FILEOS VOS__WINDOWS32
-FILETYPE VFT_DLL
-FILESUBTYPE VFT2_UNKNOWN
-BEGIN
- BLOCK "StringFileInfo"
- BEGIN BLOCK "040904E4" /* Language type = U.S English(0x0409) and Character Set = Windows, Multilingual(0x04E4) */
- BEGIN
-#ifdef PNG_LIBPNG_VERSIONINFO_COMMENTS
- VALUE "Comments", PNG_LIBPNG_VERSIONINFO_COMMENTS "\000"
-#endif /* PNG_LIBPNG_VERSIONINFO_COMMENTS */
-#ifdef PNG_USER_VERSIONINFO_COMPANYNAME
- VALUE "CompanyName", PNG_USER_VERSIONINFO_COMPANYNAME "\000"
-#endif /* PNG_USER_VERSIONINFO_COMPANYNAME */
- VALUE "FileDescription", "PNG image compression library\000"
- VALUE "FileVersion", PNG_LIBPNG_VER_STRING "\000"
- VALUE "InternalName", PNG_LIBPNG_DLLFNAME QUOTE(PNG_LIBPNG_VER_DLLNUM) PNG_LIBPNG_DLLFNAME_POSTFIX " (Windows 32 bit)\000"
- VALUE "LegalCopyright", "\251 1998-2009 Glenn Randers-Pehrson et al.\000"
-#ifdef PNG_USER_VERSIONINFO_LEGALTRADEMARKS
- VALUE "LegalTrademarks", PNG_USER_VERSIONINFO_LEGALTRADEMARKS "\000"
-#endif /* PNG_USER_VERSIONINFO_LEGALTRADEMARKS */
- VALUE "OriginalFilename", PNG_LIBPNG_DLLFNAME QUOTE(PNG_LIBPNG_VER_DLLNUM) PNG_LIBPNG_DLLFNAME_POSTFIX ".DLL\000"
-#ifdef PNG_USER_PRIVATEBUILD
- VALUE "PrivateBuild", PNG_USER_PRIVATEBUILD "\000"
-#endif /* PNG_USER_PRIVATEBUILD */
- VALUE "ProductName", "LibPNG\000"
- VALUE "ProductVersion", "1\000"
-#ifdef PNG_LIBPNG_SPECIALBUILD
- VALUE "SpecialBuild", PNG_LIBPNG_SPECIALBUILD "\000"
-#endif /* PNG_LIBPNG_SPECIALBUILD */
- END
- END
- BLOCK "VarFileInfo"
- BEGIN
- VALUE "Translation", 0x0409, 0x04E4
- END
-END
+++ /dev/null
-
-/* prefix.dfn - generate an unprefixed symbol list
- *
- * Last changed in libpng version 1.6.0 [January 30, 2012]
- * Copyright (c) 2012 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
- PNG_DFN "@" name "@"
-
-/* The configuration information *before* the additional of symbol renames,
- * the list is the C name list; no symbol prefix.
- */
-#include "pnglibconf.out"
-
-PNG_DFN_START_SORT 1
-
-#include "../png.h"
-
-PNG_DFN_END_SORT
+++ /dev/null
-# Amiga powerUP (TM) Makefile
-# makefile for libpng and SAS C V6.58/7.00 PPC compiler
-# Copyright (C) 1998 by Andreas R. Kleinert
-#
-# This code is released under the libpng license.
-# For conditions of distribution and use, see the disclaimer
-# and license in png.h
-
-CC = scppc
-CFLAGS = NOSTKCHK NOSINT OPTIMIZE OPTGO OPTPEEP OPTINLOCAL OPTINL IDIR /zlib \
- OPTLOOP OPTRDEP=8 OPTDEP=8 OPTCOMP=8
-LIBNAME = libpng.a
-AR = ppc-amigaos-ar
-AR_FLAGS = cr
-RANLIB = ppc-amigaos-ranlib
-LDFLAGS = -r -o
-LDLIBS = ../zlib/libzip.a LIB:scppc.a
-LN = ppc-amigaos-ld
-RM = delete quiet
-MKDIR = makedir
-
-OBJS = png.o pngset.o pngget.o pngrutil.o pngtrans.o pngwutil.o pngread.o \
- pngerror.o pngpread.o pngwrite.o pngrtran.o pngwtran.o pngrio.o \
- pngwio.o pngmem.o
-
-all: $(LIBNAME) pngtest
-
-$(LIBNAME): $(OBJS)
- $(AR) $(AR_FLAGS) $@ $(OBJS)
- $(RANLIB) $@
-
-pngtest: pngtest.o $(LIBNAME)
- $(LN) $(LDFLAGS) pngtest LIB:c_ppc.o pngtest.o $(LIBNAME) $(LDLIBS) \
-LIB:end.o
+++ /dev/null
-
-/* sym.dfn - define format of libpng.sym
- *
- * Last changed in libpng version 1.5.0 [January 6, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
- PNG_DFN "@" SYMBOL_PREFIX "@@" name "@"
-
-#include "../png.h"
+++ /dev/null
-;Version 1.6.3
-;--------------------------------------------------------------
-; LIBPNG symbol list as a Win32 DEF file
-; Contains all the symbols that can be exported from libpng
-;--------------------------------------------------------------
-LIBRARY
-
-EXPORTS
- png_access_version_number @1
- png_set_sig_bytes @2
- png_sig_cmp @3
- png_create_read_struct @4
- png_create_write_struct @5
- png_get_compression_buffer_size @6
- png_set_compression_buffer_size @7
- png_set_longjmp_fn @8
- png_longjmp @9
- png_reset_zstream @10
- png_create_read_struct_2 @11
- png_create_write_struct_2 @12
- png_write_sig @13
- png_write_chunk @14
- png_write_chunk_start @15
- png_write_chunk_data @16
- png_write_chunk_end @17
- png_create_info_struct @18
- png_info_init_3 @19
- png_write_info_before_PLTE @20
- png_write_info @21
- png_read_info @22
- png_convert_to_rfc1123 @23
- png_convert_from_struct_tm @24
- png_convert_from_time_t @25
- png_set_expand @26
- png_set_expand_gray_1_2_4_to_8 @27
- png_set_palette_to_rgb @28
- png_set_tRNS_to_alpha @29
- png_set_bgr @30
- png_set_gray_to_rgb @31
- png_set_rgb_to_gray @32
- png_set_rgb_to_gray_fixed @33
- png_get_rgb_to_gray_status @34
- png_build_grayscale_palette @35
- png_set_strip_alpha @36
- png_set_swap_alpha @37
- png_set_invert_alpha @38
- png_set_filler @39
- png_set_add_alpha @40
- png_set_swap @41
- png_set_packing @42
- png_set_packswap @43
- png_set_shift @44
- png_set_interlace_handling @45
- png_set_invert_mono @46
- png_set_background @47
- png_set_strip_16 @48
- png_set_quantize @49
- png_set_gamma @50
- png_set_flush @51
- png_write_flush @52
- png_start_read_image @53
- png_read_update_info @54
- png_read_rows @55
- png_read_row @56
- png_read_image @57
- png_write_row @58
- png_write_rows @59
- png_write_image @60
- png_write_end @61
- png_read_end @62
- png_destroy_info_struct @63
- png_destroy_read_struct @64
- png_destroy_write_struct @65
- png_set_crc_action @66
- png_set_filter @67
- png_set_filter_heuristics @68
- png_set_compression_level @69
- png_set_compression_mem_level @70
- png_set_compression_strategy @71
- png_set_compression_window_bits @72
- png_set_compression_method @73
- png_init_io @74
- png_set_error_fn @75
- png_get_error_ptr @76
- png_set_write_fn @77
- png_set_read_fn @78
- png_get_io_ptr @79
- png_set_read_status_fn @80
- png_set_write_status_fn @81
- png_set_mem_fn @82
- png_get_mem_ptr @83
- png_set_read_user_transform_fn @84
- png_set_write_user_transform_fn @85
- png_set_user_transform_info @86
- png_get_user_transform_ptr @87
- png_set_read_user_chunk_fn @88
- png_get_user_chunk_ptr @89
- png_set_progressive_read_fn @90
- png_get_progressive_ptr @91
- png_process_data @92
- png_progressive_combine_row @93
- png_malloc @94
- png_calloc @95
- png_malloc_warn @96
- png_free @97
- png_free_data @98
- png_data_freer @99
- png_malloc_default @100
- png_free_default @101
- png_error @102
- png_chunk_error @103
- png_err @104
- png_warning @105
- png_chunk_warning @106
- png_benign_error @107
- png_chunk_benign_error @108
- png_set_benign_errors @109
- png_get_valid @110
- png_get_rowbytes @111
- png_get_rows @112
- png_set_rows @113
- png_get_channels @114
- png_get_image_width @115
- png_get_image_height @116
- png_get_bit_depth @117
- png_get_color_type @118
- png_get_filter_type @119
- png_get_interlace_type @120
- png_get_compression_type @121
- png_get_pixels_per_meter @122
- png_get_x_pixels_per_meter @123
- png_get_y_pixels_per_meter @124
- png_get_pixel_aspect_ratio @125
- png_get_x_offset_pixels @126
- png_get_y_offset_pixels @127
- png_get_x_offset_microns @128
- png_get_y_offset_microns @129
- png_get_signature @130
- png_get_bKGD @131
- png_set_bKGD @132
- png_get_cHRM @133
- png_get_cHRM_fixed @134
- png_set_cHRM @135
- png_set_cHRM_fixed @136
- png_get_gAMA @137
- png_get_gAMA_fixed @138
- png_set_gAMA @139
- png_set_gAMA_fixed @140
- png_get_hIST @141
- png_set_hIST @142
- png_get_IHDR @143
- png_set_IHDR @144
- png_get_oFFs @145
- png_set_oFFs @146
- png_get_pCAL @147
- png_set_pCAL @148
- png_get_pHYs @149
- png_set_pHYs @150
- png_get_PLTE @151
- png_set_PLTE @152
- png_get_sBIT @153
- png_set_sBIT @154
- png_get_sRGB @155
- png_set_sRGB @156
- png_set_sRGB_gAMA_and_cHRM @157
- png_get_iCCP @158
- png_set_iCCP @159
- png_get_sPLT @160
- png_set_sPLT @161
- png_get_text @162
- png_set_text @163
- png_get_tIME @164
- png_set_tIME @165
- png_get_tRNS @166
- png_set_tRNS @167
- png_get_sCAL @168
- png_get_sCAL_s @169
- png_set_sCAL @170
- png_set_sCAL_s @171
- png_set_keep_unknown_chunks @172
- png_handle_as_unknown @173
- png_set_unknown_chunks @174
- png_set_unknown_chunk_location @175
- png_get_unknown_chunks @176
- png_set_invalid @177
- png_read_png @178
- png_write_png @179
- png_get_copyright @180
- png_get_header_ver @181
- png_get_header_version @182
- png_get_libpng_ver @183
- png_permit_mng_features @184
- png_set_strip_error_numbers @185
- png_set_user_limits @186
- png_get_user_width_max @187
- png_get_user_height_max @188
- png_set_chunk_cache_max @189
- png_get_chunk_cache_max @190
- png_set_chunk_malloc_max @191
- png_get_chunk_malloc_max @192
- png_get_pixels_per_inch @193
- png_get_x_pixels_per_inch @194
- png_get_y_pixels_per_inch @195
- png_get_x_offset_inches @196
- png_get_y_offset_inches @197
- png_get_pHYs_dpi @198
- png_get_io_state @199
- png_get_uint_32 @201
- png_get_uint_16 @202
- png_get_int_32 @203
- png_get_uint_31 @204
- png_save_uint_32 @205
- png_save_int_32 @206
- png_save_uint_16 @207
- png_set_gamma_fixed @208
- png_set_filter_heuristics_fixed @209
- png_get_pixel_aspect_ratio_fixed @210
- png_get_x_offset_inches_fixed @211
- png_get_y_offset_inches_fixed @212
- png_set_sCAL_fixed @213
- png_get_sCAL_fixed @214
- png_set_background_fixed @215
- png_get_io_chunk_type @216
- png_get_current_row_number @217
- png_get_current_pass_number @218
- png_process_data_pause @219
- png_process_data_skip @220
- png_set_expand_16 @221
- png_set_text_compression_level @222
- png_set_text_compression_mem_level @223
- png_set_text_compression_strategy @224
- png_set_text_compression_window_bits @225
- png_set_text_compression_method @226
- png_set_alpha_mode @227
- png_set_alpha_mode_fixed @228
- png_set_scale_16 @229
- png_get_cHRM_XYZ @230
- png_get_cHRM_XYZ_fixed @231
- png_set_cHRM_XYZ @232
- png_set_cHRM_XYZ_fixed @233
- png_image_begin_read_from_file @234
- png_image_begin_read_from_stdio @235
- png_image_begin_read_from_memory @236
- png_image_finish_read @237
- png_image_free @238
- png_image_write_to_file @239
- png_image_write_to_stdio @240
- png_convert_to_rfc1123_buffer @241
- png_set_check_for_invalid_index @242
- png_get_palette_max @243
- png_set_option @244
+++ /dev/null
-
-/* symbols.dfn - find all exported symbols
- *
- * Last changed in libpng version 1.5.0 [January 6, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-/* NOTE: making 'symbols.chk' checks both that the exported
- * symbols in the library don't change and (implicitly) that
- * scripts/pnglibconf.h.prebuilt is as expected. If scripts/pnglibconf.h.prebuilt
- * is remade using scripts/pnglibconf.dfa then this checks the
- * .dfa file too.
- */
-
-#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
- PNG_DFN "@" name "@ @@" ordinal "@"
-#define PNG_REMOVED(ordinal, type, name, args, attributes)\
- PNG_DFN "; @" name "@ @@" ordinal "@"
-#define PNG_EXPORT_LAST_ORDINAL(ordinal)\
- PNG_DFN "; @@" ordinal "@"
-
-/* Read the defaults, but use scripts/pnglibconf.h.prebuilt; the 'standard'
- * header file.
- */
-#include "pnglibconf.h.prebuilt"
-#include "../png.h"
-
-/* Some things are turned off by default. Turn these things
- * on here (by hand) to get the APIs they expose and validate
- * that no harm is done. This list is the set of options
- * defaulted to 'off' in scripts/pnglibconf.dfa
- *
- * Maintenance: if scripts/pnglibconf.dfa options are changed
- * from, or to, 'disabled' this needs updating!
- */
-#define PNG_BENIGN_ERRORS_SUPPORTED
-#define PNG_ERROR_NUMBERS_SUPPORTED
-#define PNG_READ_BIG_ENDIAN_SUPPORTED /* should do nothing! */
-#define PNG_INCH_CONVERSIONS_SUPPORTED
-#define PNG_READ_16_TO_8_ACCURATE_SCALE_SUPPORTED
-#define PNG_SET_OPTION_SUPPORTED
-
-#undef PNG_H
-#include "../png.h"
-
-/* Finally there are a couple of places where option support
- * actually changes the APIs revealed using a #if/#else/#endif
- * test in png.h, test these here.
- */
-#undef PNG_FLOATING_POINT_SUPPORTED /* Exposes 'fixed' APIs */
-#undef PNG_ERROR_TEXT_SUPPORTED /* Exposes unsupported APIs */
-
-#undef PNG_H
-#include "../png.h"
+++ /dev/null
-
-/* vers.dfn - define format of libpng.vers
- *
- * Last changed in libpng version 1.5.0 [January 6, 2011]
- * Copyright (c) 1998-2011 Glenn Randers-Pehrson
- *
- * This code is released under the libpng license.
- * For conditions of distribution and use, see the disclaimer
- * and license in png.h
- */
-
-#define PNG_EXPORTA(ordinal, type, name, args, attributes)\
- PNG_DFN " @" SYMBOL_PREFIX "@@" name "@;"
-
-PNG_DFN "@" PNGLIB_LIBNAME "@ {global:"
-
-#include "../png.h"
-
-PNG_DFN "local: *; };"
+++ /dev/null
-#! /bin/sh
-# test-driver - basic testsuite driver script.
-
-scriptversion=2012-06-27.10; # UTC
-
-# Copyright (C) 2011-2012 Free Software Foundation, Inc.
-#
-# This program is free software; you can redistribute it and/or modify
-# it under the terms of the GNU General Public License as published by
-# the Free Software Foundation; either version 2, or (at your option)
-# any later version.
-#
-# This program is distributed in the hope that it will be useful,
-# but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
-# GNU General Public License for more details.
-#
-# You should have received a copy of the GNU General Public License
-# along with this program. If not, see <http://www.gnu.org/licenses/>.
-
-# As a special exception to the GNU General Public License, if you
-# distribute this file as part of a program that contains a
-# configuration script generated by Autoconf, you may include it under
-# the same distribution terms that you use for the rest of that program.
-
-# This file is maintained in Automake, please report
-# bugs to <bug-automake@gnu.org> or send patches to
-# <automake-patches@gnu.org>.
-
-# Make unconditional expansion of undefined variables an error. This
-# helps a lot in preventing typo-related bugs.
-set -u
-
-usage_error ()
-{
- echo "$0: $*" >&2
- print_usage >&2
- exit 2
-}
-
-print_usage ()
-{
- cat <<END
-Usage:
- test-driver --test-name=NAME --log-file=PATH --trs-file=PATH
- [--expect-failure={yes|no}] [--color-tests={yes|no}]
- [--enable-hard-errors={yes|no}] [--] TEST-SCRIPT
-The '--test-name', '--log-file' and '--trs-file' options are mandatory.
-END
-}
-
-# TODO: better error handling in option parsing (in particular, ensure
-# TODO: $log_file, $trs_file and $test_name are defined).
-test_name= # Used for reporting.
-log_file= # Where to save the output of the test script.
-trs_file= # Where to save the metadata of the test run.
-expect_failure=no
-color_tests=no
-enable_hard_errors=yes
-while test $# -gt 0; do
- case $1 in
- --help) print_usage; exit $?;;
- --version) echo "test-driver $scriptversion"; exit $?;;
- --test-name) test_name=$2; shift;;
- --log-file) log_file=$2; shift;;
- --trs-file) trs_file=$2; shift;;
- --color-tests) color_tests=$2; shift;;
- --expect-failure) expect_failure=$2; shift;;
- --enable-hard-errors) enable_hard_errors=$2; shift;;
- --) shift; break;;
- -*) usage_error "invalid option: '$1'";;
- esac
- shift
-done
-
-if test $color_tests = yes; then
- # Keep this in sync with 'lib/am/check.am:$(am__tty_colors)'.
- red='\e[0;31m' # Red.
- grn='\e[0;32m' # Green.
- lgn='\e[1;32m' # Light green.
- blu='\e[1;34m' # Blue.
- mgn='\e[0;35m' # Magenta.
- std='\e[m' # No color.
-else
- red= grn= lgn= blu= mgn= std=
-fi
-
-do_exit='rm -f $log_file $trs_file; (exit $st); exit $st'
-trap "st=129; $do_exit" 1
-trap "st=130; $do_exit" 2
-trap "st=141; $do_exit" 13
-trap "st=143; $do_exit" 15
-
-# Test script is run here.
-"$@" >$log_file 2>&1
-estatus=$?
-if test $enable_hard_errors = no && test $estatus -eq 99; then
- estatus=1
-fi
-
-case $estatus:$expect_failure in
- 0:yes) col=$red res=XPASS recheck=yes gcopy=yes;;
- 0:*) col=$grn res=PASS recheck=no gcopy=no;;
- 77:*) col=$blu res=SKIP recheck=no gcopy=yes;;
- 99:*) col=$mgn res=ERROR recheck=yes gcopy=yes;;
- *:yes) col=$lgn res=XFAIL recheck=no gcopy=yes;;
- *:*) col=$red res=FAIL recheck=yes gcopy=yes;;
-esac
-
-# Report outcome to console.
-echo "${col}${res}${std}: $test_name"
-
-# Register the test result, and other relevant metadata.
-echo ":test-result: $res" > $trs_file
-echo ":global-test-result: $res" >> $trs_file
-echo ":recheck: $recheck" >> $trs_file
-echo ":copy-in-global-log: $gcopy" >> $trs_file
-
-# Local Variables:
-# mode: shell-script
-# sh-indentation: 2
-# eval: (add-hook 'write-file-hooks 'time-stamp)
-# time-stamp-start: "scriptversion="
-# time-stamp-format: "%:y-%02m-%02d.%02H"
-# time-stamp-time-zone: "UTC"
-# time-stamp-end: "; # UTC"
-# End:
+++ /dev/null
-cmake_minimum_required(VERSION 2.4.4)
-set(CMAKE_ALLOW_LOOSE_LOOP_CONSTRUCTS ON)
-
-project(zlib C)
-
-set(VERSION "1.2.8")
-
-option(ASM686 "Enable building i686 assembly implementation")
-option(AMD64 "Enable building amd64 assembly implementation")
-
-set(INSTALL_BIN_DIR "${CMAKE_INSTALL_PREFIX}/bin" CACHE PATH "Installation directory for executables")
-set(INSTALL_LIB_DIR "${CMAKE_INSTALL_PREFIX}/lib" CACHE PATH "Installation directory for libraries")
-set(INSTALL_INC_DIR "${CMAKE_INSTALL_PREFIX}/include" CACHE PATH "Installation directory for headers")
-set(INSTALL_MAN_DIR "${CMAKE_INSTALL_PREFIX}/share/man" CACHE PATH "Installation directory for manual pages")
-set(INSTALL_PKGCONFIG_DIR "${CMAKE_INSTALL_PREFIX}/share/pkgconfig" CACHE PATH "Installation directory for pkgconfig (.pc) files")
-
-include(CheckTypeSize)
-include(CheckFunctionExists)
-include(CheckIncludeFile)
-include(CheckCSourceCompiles)
-enable_testing()
-
-check_include_file(sys/types.h HAVE_SYS_TYPES_H)
-check_include_file(stdint.h HAVE_STDINT_H)
-check_include_file(stddef.h HAVE_STDDEF_H)
-
-#
-# Check to see if we have large file support
-#
-set(CMAKE_REQUIRED_DEFINITIONS -D_LARGEFILE64_SOURCE=1)
-# We add these other definitions here because CheckTypeSize.cmake
-# in CMake 2.4.x does not automatically do so and we want
-# compatibility with CMake 2.4.x.
-if(HAVE_SYS_TYPES_H)
- list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_SYS_TYPES_H)
-endif()
-if(HAVE_STDINT_H)
- list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDINT_H)
-endif()
-if(HAVE_STDDEF_H)
- list(APPEND CMAKE_REQUIRED_DEFINITIONS -DHAVE_STDDEF_H)
-endif()
-check_type_size(off64_t OFF64_T)
-if(HAVE_OFF64_T)
- add_definitions(-D_LARGEFILE64_SOURCE=1)
-endif()
-set(CMAKE_REQUIRED_DEFINITIONS) # clear variable
-
-#
-# Check for fseeko
-#
-check_function_exists(fseeko HAVE_FSEEKO)
-if(NOT HAVE_FSEEKO)
- add_definitions(-DNO_FSEEKO)
-endif()
-
-#
-# Check for unistd.h
-#
-check_include_file(unistd.h Z_HAVE_UNISTD_H)
-
-if(MSVC)
- set(CMAKE_DEBUG_POSTFIX "d")
- add_definitions(-D_CRT_SECURE_NO_DEPRECATE)
- add_definitions(-D_CRT_NONSTDC_NO_DEPRECATE)
- include_directories(${CMAKE_CURRENT_SOURCE_DIR})
-endif()
-
-if(NOT CMAKE_CURRENT_SOURCE_DIR STREQUAL CMAKE_CURRENT_BINARY_DIR)
- # If we're doing an out of source build and the user has a zconf.h
- # in their source tree...
- if(EXISTS ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h)
- message(STATUS "Renaming")
- message(STATUS " ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h")
- message(STATUS "to 'zconf.h.included' because this file is included with zlib")
- message(STATUS "but CMake generates it automatically in the build directory.")
- file(RENAME ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.included)
- endif()
-endif()
-
-set(ZLIB_PC ${CMAKE_CURRENT_BINARY_DIR}/zlib.pc)
-configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zlib.pc.cmakein
- ${ZLIB_PC} @ONLY)
-configure_file( ${CMAKE_CURRENT_SOURCE_DIR}/zconf.h.cmakein
- ${CMAKE_CURRENT_BINARY_DIR}/zconf.h @ONLY)
-include_directories(${CMAKE_CURRENT_BINARY_DIR} ${CMAKE_SOURCE_DIR})
-
-
-#============================================================================
-# zlib
-#============================================================================
-
-set(ZLIB_PUBLIC_HDRS
- ${CMAKE_CURRENT_BINARY_DIR}/zconf.h
- zlib.h
-)
-set(ZLIB_PRIVATE_HDRS
- crc32.h
- deflate.h
- gzguts.h
- inffast.h
- inffixed.h
- inflate.h
- inftrees.h
- trees.h
- zutil.h
-)
-set(ZLIB_SRCS
- adler32.c
- compress.c
- crc32.c
- deflate.c
- gzclose.c
- gzlib.c
- gzread.c
- gzwrite.c
- inflate.c
- infback.c
- inftrees.c
- inffast.c
- trees.c
- uncompr.c
- zutil.c
-)
-
-if(NOT MINGW)
- set(ZLIB_DLL_SRCS
- win32/zlib1.rc # If present will override custom build rule below.
- )
-endif()
-
-if(CMAKE_COMPILER_IS_GNUCC)
- if(ASM686)
- set(ZLIB_ASMS contrib/asm686/match.S)
- elseif (AMD64)
- set(ZLIB_ASMS contrib/amd64/amd64-match.S)
- endif ()
-
- if(ZLIB_ASMS)
- add_definitions(-DASMV)
- set_source_files_properties(${ZLIB_ASMS} PROPERTIES LANGUAGE C COMPILE_FLAGS -DNO_UNDERLINE)
- endif()
-endif()
-
-if(MSVC)
- if(ASM686)
- ENABLE_LANGUAGE(ASM_MASM)
- set(ZLIB_ASMS
- contrib/masmx86/inffas32.asm
- contrib/masmx86/match686.asm
- )
- elseif (AMD64)
- ENABLE_LANGUAGE(ASM_MASM)
- set(ZLIB_ASMS
- contrib/masmx64/gvmat64.asm
- contrib/masmx64/inffasx64.asm
- )
- endif()
-
- if(ZLIB_ASMS)
- add_definitions(-DASMV -DASMINF)
- endif()
-endif()
-
-# parse the full version number from zlib.h and include in ZLIB_FULL_VERSION
-file(READ ${CMAKE_CURRENT_SOURCE_DIR}/zlib.h _zlib_h_contents)
-string(REGEX REPLACE ".*#define[ \t]+ZLIB_VERSION[ \t]+\"([-0-9A-Za-z.]+)\".*"
- "\\1" ZLIB_FULL_VERSION ${_zlib_h_contents})
-
-if(MINGW)
- # This gets us DLL resource information when compiling on MinGW.
- if(NOT CMAKE_RC_COMPILER)
- set(CMAKE_RC_COMPILER windres.exe)
- endif()
-
- add_custom_command(OUTPUT ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
- COMMAND ${CMAKE_RC_COMPILER}
- -D GCC_WINDRES
- -I ${CMAKE_CURRENT_SOURCE_DIR}
- -I ${CMAKE_CURRENT_BINARY_DIR}
- -o ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj
- -i ${CMAKE_CURRENT_SOURCE_DIR}/win32/zlib1.rc)
- set(ZLIB_DLL_SRCS ${CMAKE_CURRENT_BINARY_DIR}/zlib1rc.obj)
-endif(MINGW)
-
-add_library(zlib SHARED ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_DLL_SRCS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
-add_library(zlibstatic STATIC ${ZLIB_SRCS} ${ZLIB_ASMS} ${ZLIB_PUBLIC_HDRS} ${ZLIB_PRIVATE_HDRS})
-set_target_properties(zlib PROPERTIES DEFINE_SYMBOL ZLIB_DLL)
-set_target_properties(zlib PROPERTIES SOVERSION 1)
-
-if(NOT CYGWIN)
- # This property causes shared libraries on Linux to have the full version
- # encoded into their final filename. We disable this on Cygwin because
- # it causes cygz-${ZLIB_FULL_VERSION}.dll to be created when cygz.dll
- # seems to be the default.
- #
- # This has no effect with MSVC, on that platform the version info for
- # the DLL comes from the resource file win32/zlib1.rc
- set_target_properties(zlib PROPERTIES VERSION ${ZLIB_FULL_VERSION})
-endif()
-
-if(UNIX)
- # On unix-like platforms the library is almost always called libz
- set_target_properties(zlib zlibstatic PROPERTIES OUTPUT_NAME z)
- if(NOT APPLE)
- set_target_properties(zlib PROPERTIES LINK_FLAGS "-Wl,--version-script,\"${CMAKE_CURRENT_SOURCE_DIR}/zlib.map\"")
- endif()
-elseif(BUILD_SHARED_LIBS AND WIN32)
- # Creates zlib1.dll when building shared library version
- set_target_properties(zlib PROPERTIES SUFFIX "1.dll")
-endif()
-
-if(NOT SKIP_INSTALL_LIBRARIES AND NOT SKIP_INSTALL_ALL )
- install(TARGETS zlib zlibstatic
- RUNTIME DESTINATION "${INSTALL_BIN_DIR}"
- ARCHIVE DESTINATION "${INSTALL_LIB_DIR}"
- LIBRARY DESTINATION "${INSTALL_LIB_DIR}" )
-endif()
-if(NOT SKIP_INSTALL_HEADERS AND NOT SKIP_INSTALL_ALL )
- install(FILES ${ZLIB_PUBLIC_HDRS} DESTINATION "${INSTALL_INC_DIR}")
-endif()
-if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
- install(FILES zlib.3 DESTINATION "${INSTALL_MAN_DIR}/man3")
-endif()
-if(NOT SKIP_INSTALL_FILES AND NOT SKIP_INSTALL_ALL )
- install(FILES ${ZLIB_PC} DESTINATION "${INSTALL_PKGCONFIG_DIR}")
-endif()
-
-#============================================================================
-# Example binaries
-#============================================================================
-
-add_executable(example test/example.c)
-target_link_libraries(example zlib)
-add_test(example example)
-
-add_executable(minigzip test/minigzip.c)
-target_link_libraries(minigzip zlib)
-
-if(HAVE_OFF64_T)
- add_executable(example64 test/example.c)
- target_link_libraries(example64 zlib)
- set_target_properties(example64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
- add_test(example64 example64)
-
- add_executable(minigzip64 test/minigzip.c)
- target_link_libraries(minigzip64 zlib)
- set_target_properties(minigzip64 PROPERTIES COMPILE_FLAGS "-D_FILE_OFFSET_BITS=64")
-endif()
+++ /dev/null
-
- ChangeLog file for zlib
-
-Changes in 1.2.8 (28 Apr 2013)
-- Update contrib/minizip/iowin32.c for Windows RT [Vollant]
-- Do not force Z_CONST for C++
-- Clean up contrib/vstudio [Ro§]
-- Correct spelling error in zlib.h
-- Fix mixed line endings in contrib/vstudio
-
-Changes in 1.2.7.3 (13 Apr 2013)
-- Fix version numbers and DLL names in contrib/vstudio/*/zlib.rc
-
-Changes in 1.2.7.2 (13 Apr 2013)
-- Change check for a four-byte type back to hexadecimal
-- Fix typo in win32/Makefile.msc
-- Add casts in gzwrite.c for pointer differences
-
-Changes in 1.2.7.1 (24 Mar 2013)
-- Replace use of unsafe string functions with snprintf if available
-- Avoid including stddef.h on Windows for Z_SOLO compile [Niessink]
-- Fix gzgetc undefine when Z_PREFIX set [Turk]
-- Eliminate use of mktemp in Makefile (not always available)
-- Fix bug in 'F' mode for gzopen()
-- Add inflateGetDictionary() function
-- Correct comment in deflate.h
-- Use _snprintf for snprintf in Microsoft C
-- On Darwin, only use /usr/bin/libtool if libtool is not Apple
-- Delete "--version" file if created by "ar --version" [Richard G.]
-- Fix configure check for veracity of compiler error return codes
-- Fix CMake compilation of static lib for MSVC2010 x64
-- Remove unused variable in infback9.c
-- Fix argument checks in gzlog_compress() and gzlog_write()
-- Clean up the usage of z_const and respect const usage within zlib
-- Clean up examples/gzlog.[ch] comparisons of different types
-- Avoid shift equal to bits in type (caused endless loop)
-- Fix unintialized value bug in gzputc() introduced by const patches
-- Fix memory allocation error in examples/zran.c [Nor]
-- Fix bug where gzopen(), gzclose() would write an empty file
-- Fix bug in gzclose() when gzwrite() runs out of memory
-- Check for input buffer malloc failure in examples/gzappend.c
-- Add note to contrib/blast to use binary mode in stdio
-- Fix comparisons of differently signed integers in contrib/blast
-- Check for invalid code length codes in contrib/puff
-- Fix serious but very rare decompression bug in inftrees.c
-- Update inflateBack() comments, since inflate() can be faster
-- Use underscored I/O function names for WINAPI_FAMILY
-- Add _tr_flush_bits to the external symbols prefixed by --zprefix
-- Add contrib/vstudio/vc10 pre-build step for static only
-- Quote --version-script argument in CMakeLists.txt
-- Don't specify --version-script on Apple platforms in CMakeLists.txt
-- Fix casting error in contrib/testzlib/testzlib.c
-- Fix types in contrib/minizip to match result of get_crc_table()
-- Simplify contrib/vstudio/vc10 with 'd' suffix
-- Add TOP support to win32/Makefile.msc
-- Suport i686 and amd64 assembler builds in CMakeLists.txt
-- Fix typos in the use of _LARGEFILE64_SOURCE in zconf.h
-- Add vc11 and vc12 build files to contrib/vstudio
-- Add gzvprintf() as an undocumented function in zlib
-- Fix configure for Sun shell
-- Remove runtime check in configure for four-byte integer type
-- Add casts and consts to ease user conversion to C++
-- Add man pages for minizip and miniunzip
-- In Makefile uninstall, don't rm if preceding cd fails
-- Do not return Z_BUF_ERROR if deflateParam() has nothing to write
-
-Changes in 1.2.7 (2 May 2012)
-- Replace use of memmove() with a simple copy for portability
-- Test for existence of strerror
-- Restore gzgetc_ for backward compatibility with 1.2.6
-- Fix build with non-GNU make on Solaris
-- Require gcc 4.0 or later on Mac OS X to use the hidden attribute
-- Include unistd.h for Watcom C
-- Use __WATCOMC__ instead of __WATCOM__
-- Do not use the visibility attribute if NO_VIZ defined
-- Improve the detection of no hidden visibility attribute
-- Avoid using __int64 for gcc or solo compilation
-- Cast to char * in gzprintf to avoid warnings [Zinser]
-- Fix make_vms.com for VAX [Zinser]
-- Don't use library or built-in byte swaps
-- Simplify test and use of gcc hidden attribute
-- Fix bug in gzclose_w() when gzwrite() fails to allocate memory
-- Add "x" (O_EXCL) and "e" (O_CLOEXEC) modes support to gzopen()
-- Fix bug in test/minigzip.c for configure --solo
-- Fix contrib/vstudio project link errors [Mohanathas]
-- Add ability to choose the builder in make_vms.com [Schweda]
-- Add DESTDIR support to mingw32 win32/Makefile.gcc
-- Fix comments in win32/Makefile.gcc for proper usage
-- Allow overriding the default install locations for cmake
-- Generate and install the pkg-config file with cmake
-- Build both a static and a shared version of zlib with cmake
-- Include version symbols for cmake builds
-- If using cmake with MSVC, add the source directory to the includes
-- Remove unneeded EXTRA_CFLAGS from win32/Makefile.gcc [Truta]
-- Move obsolete emx makefile to old [Truta]
-- Allow the use of -Wundef when compiling or using zlib
-- Avoid the use of the -u option with mktemp
-- Improve inflate() documentation on the use of Z_FINISH
-- Recognize clang as gcc
-- Add gzopen_w() in Windows for wide character path names
-- Rename zconf.h in CMakeLists.txt to move it out of the way
-- Add source directory in CMakeLists.txt for building examples
-- Look in build directory for zlib.pc in CMakeLists.txt
-- Remove gzflags from zlibvc.def in vc9 and vc10
-- Fix contrib/minizip compilation in the MinGW environment
-- Update ./configure for Solaris, support --64 [Mooney]
-- Remove -R. from Solaris shared build (possible security issue)
-- Avoid race condition for parallel make (-j) running example
-- Fix type mismatch between get_crc_table() and crc_table
-- Fix parsing of version with "-" in CMakeLists.txt [Snider, Ziegler]
-- Fix the path to zlib.map in CMakeLists.txt
-- Force the native libtool in Mac OS X to avoid GNU libtool [Beebe]
-- Add instructions to win32/Makefile.gcc for shared install [Torri]
-
-Changes in 1.2.6.1 (12 Feb 2012)
-- Avoid the use of the Objective-C reserved name "id"
-- Include io.h in gzguts.h for Microsoft compilers
-- Fix problem with ./configure --prefix and gzgetc macro
-- Include gz_header definition when compiling zlib solo
-- Put gzflags() functionality back in zutil.c
-- Avoid library header include in crc32.c for Z_SOLO
-- Use name in GCC_CLASSIC as C compiler for coverage testing, if set
-- Minor cleanup in contrib/minizip/zip.c [Vollant]
-- Update make_vms.com [Zinser]
-- Remove unnecessary gzgetc_ function
-- Use optimized byte swap operations for Microsoft and GNU [Snyder]
-- Fix minor typo in zlib.h comments [Rzesniowiecki]
-
-Changes in 1.2.6 (29 Jan 2012)
-- Update the Pascal interface in contrib/pascal
-- Fix function numbers for gzgetc_ in zlibvc.def files
-- Fix configure.ac for contrib/minizip [Schiffer]
-- Fix large-entry detection in minizip on 64-bit systems [Schiffer]
-- Have ./configure use the compiler return code for error indication
-- Fix CMakeLists.txt for cross compilation [McClure]
-- Fix contrib/minizip/zip.c for 64-bit architectures [Dalsnes]
-- Fix compilation of contrib/minizip on FreeBSD [Marquez]
-- Correct suggested usages in win32/Makefile.msc [Shachar, Horvath]
-- Include io.h for Turbo C / Borland C on all platforms [Truta]
-- Make version explicit in contrib/minizip/configure.ac [Bosmans]
-- Avoid warning for no encryption in contrib/minizip/zip.c [Vollant]
-- Minor cleanup up contrib/minizip/unzip.c [Vollant]
-- Fix bug when compiling minizip with C++ [Vollant]
-- Protect for long name and extra fields in contrib/minizip [Vollant]
-- Avoid some warnings in contrib/minizip [Vollant]
-- Add -I../.. -L../.. to CFLAGS for minizip and miniunzip
-- Add missing libs to minizip linker command
-- Add support for VPATH builds in contrib/minizip
-- Add an --enable-demos option to contrib/minizip/configure
-- Add the generation of configure.log by ./configure
-- Exit when required parameters not provided to win32/Makefile.gcc
-- Have gzputc return the character written instead of the argument
-- Use the -m option on ldconfig for BSD systems [Tobias]
-- Correct in zlib.map when deflateResetKeep was added
-
-Changes in 1.2.5.3 (15 Jan 2012)
-- Restore gzgetc function for binary compatibility
-- Do not use _lseeki64 under Borland C++ [Truta]
-- Update win32/Makefile.msc to build test/*.c [Truta]
-- Remove old/visualc6 given CMakefile and other alternatives
-- Update AS400 build files and documentation [Monnerat]
-- Update win32/Makefile.gcc to build test/*.c [Truta]
-- Permit stronger flushes after Z_BLOCK flushes
-- Avoid extraneous empty blocks when doing empty flushes
-- Permit Z_NULL arguments to deflatePending
-- Allow deflatePrime() to insert bits in the middle of a stream
-- Remove second empty static block for Z_PARTIAL_FLUSH
-- Write out all of the available bits when using Z_BLOCK
-- Insert the first two strings in the hash table after a flush
-
-Changes in 1.2.5.2 (17 Dec 2011)
-- fix ld error: unable to find version dependency 'ZLIB_1.2.5'
-- use relative symlinks for shared libs
-- Avoid searching past window for Z_RLE strategy
-- Assure that high-water mark initialization is always applied in deflate
-- Add assertions to fill_window() in deflate.c to match comments
-- Update python link in README
-- Correct spelling error in gzread.c
-- Fix bug in gzgets() for a concatenated empty gzip stream
-- Correct error in comment for gz_make()
-- Change gzread() and related to ignore junk after gzip streams
-- Allow gzread() and related to continue after gzclearerr()
-- Allow gzrewind() and gzseek() after a premature end-of-file
-- Simplify gzseek() now that raw after gzip is ignored
-- Change gzgetc() to a macro for speed (~40% speedup in testing)
-- Fix gzclose() to return the actual error last encountered
-- Always add large file support for windows
-- Include zconf.h for windows large file support
-- Include zconf.h.cmakein for windows large file support
-- Update zconf.h.cmakein on make distclean
-- Merge vestigial vsnprintf determination from zutil.h to gzguts.h
-- Clarify how gzopen() appends in zlib.h comments
-- Correct documentation of gzdirect() since junk at end now ignored
-- Add a transparent write mode to gzopen() when 'T' is in the mode
-- Update python link in zlib man page
-- Get inffixed.h and MAKEFIXED result to match
-- Add a ./config --solo option to make zlib subset with no libary use
-- Add undocumented inflateResetKeep() function for CAB file decoding
-- Add --cover option to ./configure for gcc coverage testing
-- Add #define ZLIB_CONST option to use const in the z_stream interface
-- Add comment to gzdopen() in zlib.h to use dup() when using fileno()
-- Note behavior of uncompress() to provide as much data as it can
-- Add files in contrib/minizip to aid in building libminizip
-- Split off AR options in Makefile.in and configure
-- Change ON macro to Z_ARG to avoid application conflicts
-- Facilitate compilation with Borland C++ for pragmas and vsnprintf
-- Include io.h for Turbo C / Borland C++
-- Move example.c and minigzip.c to test/
-- Simplify incomplete code table filling in inflate_table()
-- Remove code from inflate.c and infback.c that is impossible to execute
-- Test the inflate code with full coverage
-- Allow deflateSetDictionary, inflateSetDictionary at any time (in raw)
-- Add deflateResetKeep and fix inflateResetKeep to retain dictionary
-- Fix gzwrite.c to accommodate reduced memory zlib compilation
-- Have inflate() with Z_FINISH avoid the allocation of a window
-- Do not set strm->adler when doing raw inflate
-- Fix gzeof() to behave just like feof() when read is not past end of file
-- Fix bug in gzread.c when end-of-file is reached
-- Avoid use of Z_BUF_ERROR in gz* functions except for premature EOF
-- Document gzread() capability to read concurrently written files
-- Remove hard-coding of resource compiler in CMakeLists.txt [Blammo]
-
-Changes in 1.2.5.1 (10 Sep 2011)
-- Update FAQ entry on shared builds (#13)
-- Avoid symbolic argument to chmod in Makefile.in
-- Fix bug and add consts in contrib/puff [Oberhumer]
-- Update contrib/puff/zeros.raw test file to have all block types
-- Add full coverage test for puff in contrib/puff/Makefile
-- Fix static-only-build install in Makefile.in
-- Fix bug in unzGetCurrentFileInfo() in contrib/minizip [Kuno]
-- Add libz.a dependency to shared in Makefile.in for parallel builds
-- Spell out "number" (instead of "nb") in zlib.h for total_in, total_out
-- Replace $(...) with `...` in configure for non-bash sh [Bowler]
-- Add darwin* to Darwin* and solaris* to SunOS\ 5* in configure [Groffen]
-- Add solaris* to Linux* in configure to allow gcc use [Groffen]
-- Add *bsd* to Linux* case in configure [Bar-Lev]
-- Add inffast.obj to dependencies in win32/Makefile.msc
-- Correct spelling error in deflate.h [Kohler]
-- Change libzdll.a again to libz.dll.a (!) in win32/Makefile.gcc
-- Add test to configure for GNU C looking for gcc in output of $cc -v
-- Add zlib.pc generation to win32/Makefile.gcc [Weigelt]
-- Fix bug in zlib.h for _FILE_OFFSET_BITS set and _LARGEFILE64_SOURCE not
-- Add comment in zlib.h that adler32_combine with len2 < 0 makes no sense
-- Make NO_DIVIDE option in adler32.c much faster (thanks to John Reiser)
-- Make stronger test in zconf.h to include unistd.h for LFS
-- Apply Darwin patches for 64-bit file offsets to contrib/minizip [Slack]
-- Fix zlib.h LFS support when Z_PREFIX used
-- Add updated as400 support (removed from old) [Monnerat]
-- Avoid deflate sensitivity to volatile input data
-- Avoid division in adler32_combine for NO_DIVIDE
-- Clarify the use of Z_FINISH with deflateBound() amount of space
-- Set binary for output file in puff.c
-- Use u4 type for crc_table to avoid conversion warnings
-- Apply casts in zlib.h to avoid conversion warnings
-- Add OF to prototypes for adler32_combine_ and crc32_combine_ [Miller]
-- Improve inflateSync() documentation to note indeterminancy
-- Add deflatePending() function to return the amount of pending output
-- Correct the spelling of "specification" in FAQ [Randers-Pehrson]
-- Add a check in configure for stdarg.h, use for gzprintf()
-- Check that pointers fit in ints when gzprint() compiled old style
-- Add dummy name before $(SHAREDLIBV) in Makefile [Bar-Lev, Bowler]
-- Delete line in configure that adds -L. libz.a to LDFLAGS [Weigelt]
-- Add debug records in assmebler code [Londer]
-- Update RFC references to use http://tools.ietf.org/html/... [Li]
-- Add --archs option, use of libtool to configure for Mac OS X [Borstel]
-
-Changes in 1.2.5 (19 Apr 2010)
-- Disable visibility attribute in win32/Makefile.gcc [Bar-Lev]
-- Default to libdir as sharedlibdir in configure [Nieder]
-- Update copyright dates on modified source files
-- Update trees.c to be able to generate modified trees.h
-- Exit configure for MinGW, suggesting win32/Makefile.gcc
-- Check for NULL path in gz_open [Homurlu]
-
-Changes in 1.2.4.5 (18 Apr 2010)
-- Set sharedlibdir in configure [Torok]
-- Set LDFLAGS in Makefile.in [Bar-Lev]
-- Avoid mkdir objs race condition in Makefile.in [Bowler]
-- Add ZLIB_INTERNAL in front of internal inter-module functions and arrays
-- Define ZLIB_INTERNAL to hide internal functions and arrays for GNU C
-- Don't use hidden attribute when it is a warning generator (e.g. Solaris)
-
-Changes in 1.2.4.4 (18 Apr 2010)
-- Fix CROSS_PREFIX executable testing, CHOST extract, mingw* [Torok]
-- Undefine _LARGEFILE64_SOURCE in zconf.h if it is zero, but not if empty
-- Try to use bash or ksh regardless of functionality of /bin/sh
-- Fix configure incompatibility with NetBSD sh
-- Remove attempt to run under bash or ksh since have better NetBSD fix
-- Fix win32/Makefile.gcc for MinGW [Bar-Lev]
-- Add diagnostic messages when using CROSS_PREFIX in configure
-- Added --sharedlibdir option to configure [Weigelt]
-- Use hidden visibility attribute when available [Frysinger]
-
-Changes in 1.2.4.3 (10 Apr 2010)
-- Only use CROSS_PREFIX in configure for ar and ranlib if they exist
-- Use CROSS_PREFIX for nm [Bar-Lev]
-- Assume _LARGEFILE64_SOURCE defined is equivalent to true
-- Avoid use of undefined symbols in #if with && and ||
-- Make *64 prototypes in gzguts.h consistent with functions
-- Add -shared load option for MinGW in configure [Bowler]
-- Move z_off64_t to public interface, use instead of off64_t
-- Remove ! from shell test in configure (not portable to Solaris)
-- Change +0 macro tests to -0 for possibly increased portability
-
-Changes in 1.2.4.2 (9 Apr 2010)
-- Add consistent carriage returns to readme.txt's in masmx86 and masmx64
-- Really provide prototypes for *64 functions when building without LFS
-- Only define unlink() in minigzip.c if unistd.h not included
-- Update README to point to contrib/vstudio project files
-- Move projects/vc6 to old/ and remove projects/
-- Include stdlib.h in minigzip.c for setmode() definition under WinCE
-- Clean up assembler builds in win32/Makefile.msc [Rowe]
-- Include sys/types.h for Microsoft for off_t definition
-- Fix memory leak on error in gz_open()
-- Symbolize nm as $NM in configure [Weigelt]
-- Use TEST_LDSHARED instead of LDSHARED to link test programs [Weigelt]
-- Add +0 to _FILE_OFFSET_BITS and _LFS64_LARGEFILE in case not defined
-- Fix bug in gzeof() to take into account unused input data
-- Avoid initialization of structures with variables in puff.c
-- Updated win32/README-WIN32.txt [Rowe]
-
-Changes in 1.2.4.1 (28 Mar 2010)
-- Remove the use of [a-z] constructs for sed in configure [gentoo 310225]
-- Remove $(SHAREDLIB) from LIBS in Makefile.in [Creech]
-- Restore "for debugging" comment on sprintf() in gzlib.c
-- Remove fdopen for MVS from gzguts.h
-- Put new README-WIN32.txt in win32 [Rowe]
-- Add check for shell to configure and invoke another shell if needed
-- Fix big fat stinking bug in gzseek() on uncompressed files
-- Remove vestigial F_OPEN64 define in zutil.h
-- Set and check the value of _LARGEFILE_SOURCE and _LARGEFILE64_SOURCE
-- Avoid errors on non-LFS systems when applications define LFS macros
-- Set EXE to ".exe" in configure for MINGW [Kahle]
-- Match crc32() in crc32.c exactly to the prototype in zlib.h [Sherrill]
-- Add prefix for cross-compilation in win32/makefile.gcc [Bar-Lev]
-- Add DLL install in win32/makefile.gcc [Bar-Lev]
-- Allow Linux* or linux* from uname in configure [Bar-Lev]
-- Allow ldconfig to be redefined in configure and Makefile.in [Bar-Lev]
-- Add cross-compilation prefixes to configure [Bar-Lev]
-- Match type exactly in gz_load() invocation in gzread.c
-- Match type exactly of zcalloc() in zutil.c to zlib.h alloc_func
-- Provide prototypes for *64 functions when building zlib without LFS
-- Don't use -lc when linking shared library on MinGW
-- Remove errno.h check in configure and vestigial errno code in zutil.h
-
-Changes in 1.2.4 (14 Mar 2010)
-- Fix VER3 extraction in configure for no fourth subversion
-- Update zlib.3, add docs to Makefile.in to make .pdf out of it
-- Add zlib.3.pdf to distribution
-- Don't set error code in gzerror() if passed pointer is NULL
-- Apply destination directory fixes to CMakeLists.txt [Lowman]
-- Move #cmakedefine's to a new zconf.in.cmakein
-- Restore zconf.h for builds that don't use configure or cmake
-- Add distclean to dummy Makefile for convenience
-- Update and improve INDEX, README, and FAQ
-- Update CMakeLists.txt for the return of zconf.h [Lowman]
-- Update contrib/vstudio/vc9 and vc10 [Vollant]
-- Change libz.dll.a back to libzdll.a in win32/Makefile.gcc
-- Apply license and readme changes to contrib/asm686 [Raiter]
-- Check file name lengths and add -c option in minigzip.c [Li]
-- Update contrib/amd64 and contrib/masmx86/ [Vollant]
-- Avoid use of "eof" parameter in trees.c to not shadow library variable
-- Update make_vms.com for removal of zlibdefs.h [Zinser]
-- Update assembler code and vstudio projects in contrib [Vollant]
-- Remove outdated assembler code contrib/masm686 and contrib/asm586
-- Remove old vc7 and vc8 from contrib/vstudio
-- Update win32/Makefile.msc, add ZLIB_VER_SUBREVISION [Rowe]
-- Fix memory leaks in gzclose_r() and gzclose_w(), file leak in gz_open()
-- Add contrib/gcc_gvmat64 for longest_match and inflate_fast [Vollant]
-- Remove *64 functions from win32/zlib.def (they're not 64-bit yet)
-- Fix bug in void-returning vsprintf() case in gzwrite.c
-- Fix name change from inflate.h in contrib/inflate86/inffas86.c
-- Check if temporary file exists before removing in make_vms.com [Zinser]
-- Fix make install and uninstall for --static option
-- Fix usage of _MSC_VER in gzguts.h and zutil.h [Truta]
-- Update readme.txt in contrib/masmx64 and masmx86 to assemble
-
-Changes in 1.2.3.9 (21 Feb 2010)
-- Expunge gzio.c
-- Move as400 build information to old
-- Fix updates in contrib/minizip and contrib/vstudio
-- Add const to vsnprintf test in configure to avoid warnings [Weigelt]
-- Delete zconf.h (made by configure) [Weigelt]
-- Change zconf.in.h to zconf.h.in per convention [Weigelt]
-- Check for NULL buf in gzgets()
-- Return empty string for gzgets() with len == 1 (like fgets())
-- Fix description of gzgets() in zlib.h for end-of-file, NULL return
-- Update minizip to 1.1 [Vollant]
-- Avoid MSVC loss of data warnings in gzread.c, gzwrite.c
-- Note in zlib.h that gzerror() should be used to distinguish from EOF
-- Remove use of snprintf() from gzlib.c
-- Fix bug in gzseek()
-- Update contrib/vstudio, adding vc9 and vc10 [Kuno, Vollant]
-- Fix zconf.h generation in CMakeLists.txt [Lowman]
-- Improve comments in zconf.h where modified by configure
-
-Changes in 1.2.3.8 (13 Feb 2010)
-- Clean up text files (tabs, trailing whitespace, etc.) [Oberhumer]
-- Use z_off64_t in gz_zero() and gz_skip() to match state->skip
-- Avoid comparison problem when sizeof(int) == sizeof(z_off64_t)
-- Revert to Makefile.in from 1.2.3.6 (live with the clutter)
-- Fix missing error return in gzflush(), add zlib.h note
-- Add *64 functions to zlib.map [Levin]
-- Fix signed/unsigned comparison in gz_comp()
-- Use SFLAGS when testing shared linking in configure
-- Add --64 option to ./configure to use -m64 with gcc
-- Fix ./configure --help to correctly name options
-- Have make fail if a test fails [Levin]
-- Avoid buffer overrun in contrib/masmx64/gvmat64.asm [Simpson]
-- Remove assembler object files from contrib
-
-Changes in 1.2.3.7 (24 Jan 2010)
-- Always gzopen() with O_LARGEFILE if available
-- Fix gzdirect() to work immediately after gzopen() or gzdopen()
-- Make gzdirect() more precise when the state changes while reading
-- Improve zlib.h documentation in many places
-- Catch memory allocation failure in gz_open()
-- Complete close operation if seek forward in gzclose_w() fails
-- Return Z_ERRNO from gzclose_r() if close() fails
-- Return Z_STREAM_ERROR instead of EOF for gzclose() being passed NULL
-- Return zero for gzwrite() errors to match zlib.h description
-- Return -1 on gzputs() error to match zlib.h description
-- Add zconf.in.h to allow recovery from configure modification [Weigelt]
-- Fix static library permissions in Makefile.in [Weigelt]
-- Avoid warnings in configure tests that hide functionality [Weigelt]
-- Add *BSD and DragonFly to Linux case in configure [gentoo 123571]
-- Change libzdll.a to libz.dll.a in win32/Makefile.gcc [gentoo 288212]
-- Avoid access of uninitialized data for first inflateReset2 call [Gomes]
-- Keep object files in subdirectories to reduce the clutter somewhat
-- Remove default Makefile and zlibdefs.h, add dummy Makefile
-- Add new external functions to Z_PREFIX, remove duplicates, z_z_ -> z_
-- Remove zlibdefs.h completely -- modify zconf.h instead
-
-Changes in 1.2.3.6 (17 Jan 2010)
-- Avoid void * arithmetic in gzread.c and gzwrite.c
-- Make compilers happier with const char * for gz_error message
-- Avoid unused parameter warning in inflate.c
-- Avoid signed-unsigned comparison warning in inflate.c
-- Indent #pragma's for traditional C
-- Fix usage of strwinerror() in glib.c, change to gz_strwinerror()
-- Correct email address in configure for system options
-- Update make_vms.com and add make_vms.com to contrib/minizip [Zinser]
-- Update zlib.map [Brown]
-- Fix Makefile.in for Solaris 10 make of example64 and minizip64 [Torok]
-- Apply various fixes to CMakeLists.txt [Lowman]
-- Add checks on len in gzread() and gzwrite()
-- Add error message for no more room for gzungetc()
-- Remove zlib version check in gzwrite()
-- Defer compression of gzprintf() result until need to
-- Use snprintf() in gzdopen() if available
-- Remove USE_MMAP configuration determination (only used by minigzip)
-- Remove examples/pigz.c (available separately)
-- Update examples/gun.c to 1.6
-
-Changes in 1.2.3.5 (8 Jan 2010)
-- Add space after #if in zutil.h for some compilers
-- Fix relatively harmless bug in deflate_fast() [Exarevsky]
-- Fix same problem in deflate_slow()
-- Add $(SHAREDLIBV) to LIBS in Makefile.in [Brown]
-- Add deflate_rle() for faster Z_RLE strategy run-length encoding
-- Add deflate_huff() for faster Z_HUFFMAN_ONLY encoding
-- Change name of "write" variable in inffast.c to avoid library collisions
-- Fix premature EOF from gzread() in gzio.c [Brown]
-- Use zlib header window size if windowBits is 0 in inflateInit2()
-- Remove compressBound() call in deflate.c to avoid linking compress.o
-- Replace use of errno in gz* with functions, support WinCE [Alves]
-- Provide alternative to perror() in minigzip.c for WinCE [Alves]
-- Don't use _vsnprintf on later versions of MSVC [Lowman]
-- Add CMake build script and input file [Lowman]
-- Update contrib/minizip to 1.1 [Svensson, Vollant]
-- Moved nintendods directory from contrib to .
-- Replace gzio.c with a new set of routines with the same functionality
-- Add gzbuffer(), gzoffset(), gzclose_r(), gzclose_w() as part of above
-- Update contrib/minizip to 1.1b
-- Change gzeof() to return 0 on error instead of -1 to agree with zlib.h
-
-Changes in 1.2.3.4 (21 Dec 2009)
-- Use old school .SUFFIXES in Makefile.in for FreeBSD compatibility
-- Update comments in configure and Makefile.in for default --shared
-- Fix test -z's in configure [Marquess]
-- Build examplesh and minigzipsh when not testing
-- Change NULL's to Z_NULL's in deflate.c and in comments in zlib.h
-- Import LDFLAGS from the environment in configure
-- Fix configure to populate SFLAGS with discovered CFLAGS options
-- Adapt make_vms.com to the new Makefile.in [Zinser]
-- Add zlib2ansi script for C++ compilation [Marquess]
-- Add _FILE_OFFSET_BITS=64 test to make test (when applicable)
-- Add AMD64 assembler code for longest match to contrib [Teterin]
-- Include options from $SFLAGS when doing $LDSHARED
-- Simplify 64-bit file support by introducing z_off64_t type
-- Make shared object files in objs directory to work around old Sun cc
-- Use only three-part version number for Darwin shared compiles
-- Add rc option to ar in Makefile.in for when ./configure not run
-- Add -WI,-rpath,. to LDFLAGS for OSF 1 V4*
-- Set LD_LIBRARYN32_PATH for SGI IRIX shared compile
-- Protect against _FILE_OFFSET_BITS being defined when compiling zlib
-- Rename Makefile.in targets allstatic to static and allshared to shared
-- Fix static and shared Makefile.in targets to be independent
-- Correct error return bug in gz_open() by setting state [Brown]
-- Put spaces before ;;'s in configure for better sh compatibility
-- Add pigz.c (parallel implementation of gzip) to examples/
-- Correct constant in crc32.c to UL [Leventhal]
-- Reject negative lengths in crc32_combine()
-- Add inflateReset2() function to work like inflateEnd()/inflateInit2()
-- Include sys/types.h for _LARGEFILE64_SOURCE [Brown]
-- Correct typo in doc/algorithm.txt [Janik]
-- Fix bug in adler32_combine() [Zhu]
-- Catch missing-end-of-block-code error in all inflates and in puff
- Assures that random input to inflate eventually results in an error
-- Added enough.c (calculation of ENOUGH for inftrees.h) to examples/
-- Update ENOUGH and its usage to reflect discovered bounds
-- Fix gzerror() error report on empty input file [Brown]
-- Add ush casts in trees.c to avoid pedantic runtime errors
-- Fix typo in zlib.h uncompress() description [Reiss]
-- Correct inflate() comments with regard to automatic header detection
-- Remove deprecation comment on Z_PARTIAL_FLUSH (it stays)
-- Put new version of gzlog (2.0) in examples with interruption recovery
-- Add puff compile option to permit invalid distance-too-far streams
-- Add puff TEST command options, ability to read piped input
-- Prototype the *64 functions in zlib.h when _FILE_OFFSET_BITS == 64, but
- _LARGEFILE64_SOURCE not defined
-- Fix Z_FULL_FLUSH to truly erase the past by resetting s->strstart
-- Fix deflateSetDictionary() to use all 32K for output consistency
-- Remove extraneous #define MIN_LOOKAHEAD in deflate.c (in deflate.h)
-- Clear bytes after deflate lookahead to avoid use of uninitialized data
-- Change a limit in inftrees.c to be more transparent to Coverity Prevent
-- Update win32/zlib.def with exported symbols from zlib.h
-- Correct spelling errors in zlib.h [Willem, Sobrado]
-- Allow Z_BLOCK for deflate() to force a new block
-- Allow negative bits in inflatePrime() to delete existing bit buffer
-- Add Z_TREES flush option to inflate() to return at end of trees
-- Add inflateMark() to return current state information for random access
-- Add Makefile for NintendoDS to contrib [Costa]
-- Add -w in configure compile tests to avoid spurious warnings [Beucler]
-- Fix typos in zlib.h comments for deflateSetDictionary()
-- Fix EOF detection in transparent gzread() [Maier]
-
-Changes in 1.2.3.3 (2 October 2006)
-- Make --shared the default for configure, add a --static option
-- Add compile option to permit invalid distance-too-far streams
-- Add inflateUndermine() function which is required to enable above
-- Remove use of "this" variable name for C++ compatibility [Marquess]
-- Add testing of shared library in make test, if shared library built
-- Use ftello() and fseeko() if available instead of ftell() and fseek()
-- Provide two versions of all functions that use the z_off_t type for
- binary compatibility -- a normal version and a 64-bit offset version,
- per the Large File Support Extension when _LARGEFILE64_SOURCE is
- defined; use the 64-bit versions by default when _FILE_OFFSET_BITS
- is defined to be 64
-- Add a --uname= option to configure to perhaps help with cross-compiling
-
-Changes in 1.2.3.2 (3 September 2006)
-- Turn off silly Borland warnings [Hay]
-- Use off64_t and define _LARGEFILE64_SOURCE when present
-- Fix missing dependency on inffixed.h in Makefile.in
-- Rig configure --shared to build both shared and static [Teredesai, Truta]
-- Remove zconf.in.h and instead create a new zlibdefs.h file
-- Fix contrib/minizip/unzip.c non-encrypted after encrypted [Vollant]
-- Add treebuild.xml (see http://treebuild.metux.de/) [Weigelt]
-
-Changes in 1.2.3.1 (16 August 2006)
-- Add watcom directory with OpenWatcom make files [Daniel]
-- Remove #undef of FAR in zconf.in.h for MVS [Fedtke]
-- Update make_vms.com [Zinser]
-- Use -fPIC for shared build in configure [Teredesai, Nicholson]
-- Use only major version number for libz.so on IRIX and OSF1 [Reinholdtsen]
-- Use fdopen() (not _fdopen()) for Interix in zutil.h [B\8ack]
-- Add some FAQ entries about the contrib directory
-- Update the MVS question in the FAQ
-- Avoid extraneous reads after EOF in gzio.c [Brown]
-- Correct spelling of "successfully" in gzio.c [Randers-Pehrson]
-- Add comments to zlib.h about gzerror() usage [Brown]
-- Set extra flags in gzip header in gzopen() like deflate() does
-- Make configure options more compatible with double-dash conventions
- [Weigelt]
-- Clean up compilation under Solaris SunStudio cc [Rowe, Reinholdtsen]
-- Fix uninstall target in Makefile.in [Truta]
-- Add pkgconfig support [Weigelt]
-- Use $(DESTDIR) macro in Makefile.in [Reinholdtsen, Weigelt]
-- Replace set_data_type() with a more accurate detect_data_type() in
- trees.c, according to the txtvsbin.txt document [Truta]
-- Swap the order of #include <stdio.h> and #include "zlib.h" in
- gzio.c, example.c and minigzip.c [Truta]
-- Shut up annoying VS2005 warnings about standard C deprecation [Rowe,
- Truta] (where?)
-- Fix target "clean" from win32/Makefile.bor [Truta]
-- Create .pdb and .manifest files in win32/makefile.msc [Ziegler, Rowe]
-- Update zlib www home address in win32/DLL_FAQ.txt [Truta]
-- Update contrib/masmx86/inffas32.asm for VS2005 [Vollant, Van Wassenhove]
-- Enable browse info in the "Debug" and "ASM Debug" configurations in
- the Visual C++ 6 project, and set (non-ASM) "Debug" as default [Truta]
-- Add pkgconfig support [Weigelt]
-- Add ZLIB_VER_MAJOR, ZLIB_VER_MINOR and ZLIB_VER_REVISION in zlib.h,
- for use in win32/zlib1.rc [Polushin, Rowe, Truta]
-- Add a document that explains the new text detection scheme to
- doc/txtvsbin.txt [Truta]
-- Add rfc1950.txt, rfc1951.txt and rfc1952.txt to doc/ [Truta]
-- Move algorithm.txt into doc/ [Truta]
-- Synchronize FAQ with website
-- Fix compressBound(), was low for some pathological cases [Fearnley]
-- Take into account wrapper variations in deflateBound()
-- Set examples/zpipe.c input and output to binary mode for Windows
-- Update examples/zlib_how.html with new zpipe.c (also web site)
-- Fix some warnings in examples/gzlog.c and examples/zran.c (it seems
- that gcc became pickier in 4.0)
-- Add zlib.map for Linux: "All symbols from zlib-1.1.4 remain
- un-versioned, the patch adds versioning only for symbols introduced in
- zlib-1.2.0 or later. It also declares as local those symbols which are
- not designed to be exported." [Levin]
-- Update Z_PREFIX list in zconf.in.h, add --zprefix option to configure
-- Do not initialize global static by default in trees.c, add a response
- NO_INIT_GLOBAL_POINTERS to initialize them if needed [Marquess]
-- Don't use strerror() in gzio.c under WinCE [Yakimov]
-- Don't use errno.h in zutil.h under WinCE [Yakimov]
-- Move arguments for AR to its usage to allow replacing ar [Marot]
-- Add HAVE_VISIBILITY_PRAGMA in zconf.in.h for Mozilla [Randers-Pehrson]
-- Improve inflateInit() and inflateInit2() documentation
-- Fix structure size comment in inflate.h
-- Change configure help option from --h* to --help [Santos]
-
-Changes in 1.2.3 (18 July 2005)
-- Apply security vulnerability fixes to contrib/infback9 as well
-- Clean up some text files (carriage returns, trailing space)
-- Update testzlib, vstudio, masmx64, and masmx86 in contrib [Vollant]
-
-Changes in 1.2.2.4 (11 July 2005)
-- Add inflatePrime() function for starting inflation at bit boundary
-- Avoid some Visual C warnings in deflate.c
-- Avoid more silly Visual C warnings in inflate.c and inftrees.c for 64-bit
- compile
-- Fix some spelling errors in comments [Betts]
-- Correct inflateInit2() error return documentation in zlib.h
-- Add zran.c example of compressed data random access to examples
- directory, shows use of inflatePrime()
-- Fix cast for assignments to strm->state in inflate.c and infback.c
-- Fix zlibCompileFlags() in zutil.c to use 1L for long shifts [Oberhumer]
-- Move declarations of gf2 functions to right place in crc32.c [Oberhumer]
-- Add cast in trees.c t avoid a warning [Oberhumer]
-- Avoid some warnings in fitblk.c, gun.c, gzjoin.c in examples [Oberhumer]
-- Update make_vms.com [Zinser]
-- Initialize state->write in inflateReset() since copied in inflate_fast()
-- Be more strict on incomplete code sets in inflate_table() and increase
- ENOUGH and MAXD -- this repairs a possible security vulnerability for
- invalid inflate input. Thanks to Tavis Ormandy and Markus Oberhumer for
- discovering the vulnerability and providing test cases.
-- Add ia64 support to configure for HP-UX [Smith]
-- Add error return to gzread() for format or i/o error [Levin]
-- Use malloc.h for OS/2 [Necasek]
-
-Changes in 1.2.2.3 (27 May 2005)
-- Replace 1U constants in inflate.c and inftrees.c for 64-bit compile
-- Typecast fread() return values in gzio.c [Vollant]
-- Remove trailing space in minigzip.c outmode (VC++ can't deal with it)
-- Fix crc check bug in gzread() after gzungetc() [Heiner]
-- Add the deflateTune() function to adjust internal compression parameters
-- Add a fast gzip decompressor, gun.c, to examples (use of inflateBack)
-- Remove an incorrect assertion in examples/zpipe.c
-- Add C++ wrapper in infback9.h [Donais]
-- Fix bug in inflateCopy() when decoding fixed codes
-- Note in zlib.h how much deflateSetDictionary() actually uses
-- Remove USE_DICT_HEAD in deflate.c (would mess up inflate if used)
-- Add _WIN32_WCE to define WIN32 in zconf.in.h [Spencer]
-- Don't include stderr.h or errno.h for _WIN32_WCE in zutil.h [Spencer]
-- Add gzdirect() function to indicate transparent reads
-- Update contrib/minizip [Vollant]
-- Fix compilation of deflate.c when both ASMV and FASTEST [Oberhumer]
-- Add casts in crc32.c to avoid warnings [Oberhumer]
-- Add contrib/masmx64 [Vollant]
-- Update contrib/asm586, asm686, masmx86, testzlib, vstudio [Vollant]
-
-Changes in 1.2.2.2 (30 December 2004)
-- Replace structure assignments in deflate.c and inflate.c with zmemcpy to
- avoid implicit memcpy calls (portability for no-library compilation)
-- Increase sprintf() buffer size in gzdopen() to allow for large numbers
-- Add INFLATE_STRICT to check distances against zlib header
-- Improve WinCE errno handling and comments [Chang]
-- Remove comment about no gzip header processing in FAQ
-- Add Z_FIXED strategy option to deflateInit2() to force fixed trees
-- Add updated make_vms.com [Coghlan], update README
-- Create a new "examples" directory, move gzappend.c there, add zpipe.c,
- fitblk.c, gzlog.[ch], gzjoin.c, and zlib_how.html.
-- Add FAQ entry and comments in deflate.c on uninitialized memory access
-- Add Solaris 9 make options in configure [Gilbert]
-- Allow strerror() usage in gzio.c for STDC
-- Fix DecompressBuf in contrib/delphi/ZLib.pas [ManChesTer]
-- Update contrib/masmx86/inffas32.asm and gvmat32.asm [Vollant]
-- Use z_off_t for adler32_combine() and crc32_combine() lengths
-- Make adler32() much faster for small len
-- Use OS_CODE in deflate() default gzip header
-
-Changes in 1.2.2.1 (31 October 2004)
-- Allow inflateSetDictionary() call for raw inflate
-- Fix inflate header crc check bug for file names and comments
-- Add deflateSetHeader() and gz_header structure for custom gzip headers
-- Add inflateGetheader() to retrieve gzip headers
-- Add crc32_combine() and adler32_combine() functions
-- Add alloc_func, free_func, in_func, out_func to Z_PREFIX list
-- Use zstreamp consistently in zlib.h (inflate_back functions)
-- Remove GUNZIP condition from definition of inflate_mode in inflate.h
- and in contrib/inflate86/inffast.S [Truta, Anderson]
-- Add support for AMD64 in contrib/inflate86/inffas86.c [Anderson]
-- Update projects/README.projects and projects/visualc6 [Truta]
-- Update win32/DLL_FAQ.txt [Truta]
-- Avoid warning under NO_GZCOMPRESS in gzio.c; fix typo [Truta]
-- Deprecate Z_ASCII; use Z_TEXT instead [Truta]
-- Use a new algorithm for setting strm->data_type in trees.c [Truta]
-- Do not define an exit() prototype in zutil.c unless DEBUG defined
-- Remove prototype of exit() from zutil.c, example.c, minigzip.c [Truta]
-- Add comment in zlib.h for Z_NO_FLUSH parameter to deflate()
-- Fix Darwin build version identification [Peterson]
-
-Changes in 1.2.2 (3 October 2004)
-- Update zlib.h comments on gzip in-memory processing
-- Set adler to 1 in inflateReset() to support Java test suite [Walles]
-- Add contrib/dotzlib [Ravn]
-- Update win32/DLL_FAQ.txt [Truta]
-- Update contrib/minizip [Vollant]
-- Move contrib/visual-basic.txt to old/ [Truta]
-- Fix assembler builds in projects/visualc6/ [Truta]
-
-Changes in 1.2.1.2 (9 September 2004)
-- Update INDEX file
-- Fix trees.c to update strm->data_type (no one ever noticed!)
-- Fix bug in error case in inflate.c, infback.c, and infback9.c [Brown]
-- Add "volatile" to crc table flag declaration (for DYNAMIC_CRC_TABLE)
-- Add limited multitasking protection to DYNAMIC_CRC_TABLE
-- Add NO_vsnprintf for VMS in zutil.h [Mozilla]
-- Don't declare strerror() under VMS [Mozilla]
-- Add comment to DYNAMIC_CRC_TABLE to use get_crc_table() to initialize
-- Update contrib/ada [Anisimkov]
-- Update contrib/minizip [Vollant]
-- Fix configure to not hardcode directories for Darwin [Peterson]
-- Fix gzio.c to not return error on empty files [Brown]
-- Fix indentation; update version in contrib/delphi/ZLib.pas and
- contrib/pascal/zlibpas.pas [Truta]
-- Update mkasm.bat in contrib/masmx86 [Truta]
-- Update contrib/untgz [Truta]
-- Add projects/README.projects [Truta]
-- Add project for MS Visual C++ 6.0 in projects/visualc6 [Cadieux, Truta]
-- Update win32/DLL_FAQ.txt [Truta]
-- Update list of Z_PREFIX symbols in zconf.h [Randers-Pehrson, Truta]
-- Remove an unnecessary assignment to curr in inftrees.c [Truta]
-- Add OS/2 to exe builds in configure [Poltorak]
-- Remove err dummy parameter in zlib.h [Kientzle]
-
-Changes in 1.2.1.1 (9 January 2004)
-- Update email address in README
-- Several FAQ updates
-- Fix a big fat bug in inftrees.c that prevented decoding valid
- dynamic blocks with only literals and no distance codes --
- Thanks to "Hot Emu" for the bug report and sample file
-- Add a note to puff.c on no distance codes case.
-
-Changes in 1.2.1 (17 November 2003)
-- Remove a tab in contrib/gzappend/gzappend.c
-- Update some interfaces in contrib for new zlib functions
-- Update zlib version number in some contrib entries
-- Add Windows CE definition for ptrdiff_t in zutil.h [Mai, Truta]
-- Support shared libraries on Hurd and KFreeBSD [Brown]
-- Fix error in NO_DIVIDE option of adler32.c
-
-Changes in 1.2.0.8 (4 November 2003)
-- Update version in contrib/delphi/ZLib.pas and contrib/pascal/zlibpas.pas
-- Add experimental NO_DIVIDE #define in adler32.c
- - Possibly faster on some processors (let me know if it is)
-- Correct Z_BLOCK to not return on first inflate call if no wrap
-- Fix strm->data_type on inflate() return to correctly indicate EOB
-- Add deflatePrime() function for appending in the middle of a byte
-- Add contrib/gzappend for an example of appending to a stream
-- Update win32/DLL_FAQ.txt [Truta]
-- Delete Turbo C comment in README [Truta]
-- Improve some indentation in zconf.h [Truta]
-- Fix infinite loop on bad input in configure script [Church]
-- Fix gzeof() for concatenated gzip files [Johnson]
-- Add example to contrib/visual-basic.txt [Michael B.]
-- Add -p to mkdir's in Makefile.in [vda]
-- Fix configure to properly detect presence or lack of printf functions
-- Add AS400 support [Monnerat]
-- Add a little Cygwin support [Wilson]
-
-Changes in 1.2.0.7 (21 September 2003)
-- Correct some debug formats in contrib/infback9
-- Cast a type in a debug statement in trees.c
-- Change search and replace delimiter in configure from % to # [Beebe]
-- Update contrib/untgz to 0.2 with various fixes [Truta]
-- Add build support for Amiga [Nikl]
-- Remove some directories in old that have been updated to 1.2
-- Add dylib building for Mac OS X in configure and Makefile.in
-- Remove old distribution stuff from Makefile
-- Update README to point to DLL_FAQ.txt, and add comment on Mac OS X
-- Update links in README
-
-Changes in 1.2.0.6 (13 September 2003)
-- Minor FAQ updates
-- Update contrib/minizip to 1.00 [Vollant]
-- Remove test of gz functions in example.c when GZ_COMPRESS defined [Truta]
-- Update POSTINC comment for 68060 [Nikl]
-- Add contrib/infback9 with deflate64 decoding (unsupported)
-- For MVS define NO_vsnprintf and undefine FAR [van Burik]
-- Add pragma for fdopen on MVS [van Burik]
-
-Changes in 1.2.0.5 (8 September 2003)
-- Add OF to inflateBackEnd() declaration in zlib.h
-- Remember start when using gzdopen in the middle of a file
-- Use internal off_t counters in gz* functions to properly handle seeks
-- Perform more rigorous check for distance-too-far in inffast.c
-- Add Z_BLOCK flush option to return from inflate at block boundary
-- Set strm->data_type on return from inflate
- - Indicate bits unused, if at block boundary, and if in last block
-- Replace size_t with ptrdiff_t in crc32.c, and check for correct size
-- Add condition so old NO_DEFLATE define still works for compatibility
-- FAQ update regarding the Windows DLL [Truta]
-- INDEX update: add qnx entry, remove aix entry [Truta]
-- Install zlib.3 into mandir [Wilson]
-- Move contrib/zlib_dll_FAQ.txt to win32/DLL_FAQ.txt; update [Truta]
-- Adapt the zlib interface to the new DLL convention guidelines [Truta]
-- Introduce ZLIB_WINAPI macro to allow the export of functions using
- the WINAPI calling convention, for Visual Basic [Vollant, Truta]
-- Update msdos and win32 scripts and makefiles [Truta]
-- Export symbols by name, not by ordinal, in win32/zlib.def [Truta]
-- Add contrib/ada [Anisimkov]
-- Move asm files from contrib/vstudio/vc70_32 to contrib/asm386 [Truta]
-- Rename contrib/asm386 to contrib/masmx86 [Truta, Vollant]
-- Add contrib/masm686 [Truta]
-- Fix offsets in contrib/inflate86 and contrib/masmx86/inffas32.asm
- [Truta, Vollant]
-- Update contrib/delphi; rename to contrib/pascal; add example [Truta]
-- Remove contrib/delphi2; add a new contrib/delphi [Truta]
-- Avoid inclusion of the nonstandard <memory.h> in contrib/iostream,
- and fix some method prototypes [Truta]
-- Fix the ZCR_SEED2 constant to avoid warnings in contrib/minizip
- [Truta]
-- Avoid the use of backslash (\) in contrib/minizip [Vollant]
-- Fix file time handling in contrib/untgz; update makefiles [Truta]
-- Update contrib/vstudio/vc70_32 to comply with the new DLL guidelines
- [Vollant]
-- Remove contrib/vstudio/vc15_16 [Vollant]
-- Rename contrib/vstudio/vc70_32 to contrib/vstudio/vc7 [Truta]
-- Update README.contrib [Truta]
-- Invert the assignment order of match_head and s->prev[...] in
- INSERT_STRING [Truta]
-- Compare TOO_FAR with 32767 instead of 32768, to avoid 16-bit warnings
- [Truta]
-- Compare function pointers with 0, not with NULL or Z_NULL [Truta]
-- Fix prototype of syncsearch in inflate.c [Truta]
-- Introduce ASMINF macro to be enabled when using an ASM implementation
- of inflate_fast [Truta]
-- Change NO_DEFLATE to NO_GZCOMPRESS [Truta]
-- Modify test_gzio in example.c to take a single file name as a
- parameter [Truta]
-- Exit the example.c program if gzopen fails [Truta]
-- Add type casts around strlen in example.c [Truta]
-- Remove casting to sizeof in minigzip.c; give a proper type
- to the variable compared with SUFFIX_LEN [Truta]
-- Update definitions of STDC and STDC99 in zconf.h [Truta]
-- Synchronize zconf.h with the new Windows DLL interface [Truta]
-- Use SYS16BIT instead of __32BIT__ to distinguish between
- 16- and 32-bit platforms [Truta]
-- Use far memory allocators in small 16-bit memory models for
- Turbo C [Truta]
-- Add info about the use of ASMV, ASMINF and ZLIB_WINAPI in
- zlibCompileFlags [Truta]
-- Cygwin has vsnprintf [Wilson]
-- In Windows16, OS_CODE is 0, as in MSDOS [Truta]
-- In Cygwin, OS_CODE is 3 (Unix), not 11 (Windows32) [Wilson]
-
-Changes in 1.2.0.4 (10 August 2003)
-- Minor FAQ updates
-- Be more strict when checking inflateInit2's windowBits parameter
-- Change NO_GUNZIP compile option to NO_GZIP to cover deflate as well
-- Add gzip wrapper option to deflateInit2 using windowBits
-- Add updated QNX rule in configure and qnx directory [Bonnefoy]
-- Make inflate distance-too-far checks more rigorous
-- Clean up FAR usage in inflate
-- Add casting to sizeof() in gzio.c and minigzip.c
-
-Changes in 1.2.0.3 (19 July 2003)
-- Fix silly error in gzungetc() implementation [Vollant]
-- Update contrib/minizip and contrib/vstudio [Vollant]
-- Fix printf format in example.c
-- Correct cdecl support in zconf.in.h [Anisimkov]
-- Minor FAQ updates
-
-Changes in 1.2.0.2 (13 July 2003)
-- Add ZLIB_VERNUM in zlib.h for numerical preprocessor comparisons
-- Attempt to avoid warnings in crc32.c for pointer-int conversion
-- Add AIX to configure, remove aix directory [Bakker]
-- Add some casts to minigzip.c
-- Improve checking after insecure sprintf() or vsprintf() calls
-- Remove #elif's from crc32.c
-- Change leave label to inf_leave in inflate.c and infback.c to avoid
- library conflicts
-- Remove inflate gzip decoding by default--only enable gzip decoding by
- special request for stricter backward compatibility
-- Add zlibCompileFlags() function to return compilation information
-- More typecasting in deflate.c to avoid warnings
-- Remove leading underscore from _Capital #defines [Truta]
-- Fix configure to link shared library when testing
-- Add some Windows CE target adjustments [Mai]
-- Remove #define ZLIB_DLL in zconf.h [Vollant]
-- Add zlib.3 [Rodgers]
-- Update RFC URL in deflate.c and algorithm.txt [Mai]
-- Add zlib_dll_FAQ.txt to contrib [Truta]
-- Add UL to some constants [Truta]
-- Update minizip and vstudio [Vollant]
-- Remove vestigial NEED_DUMMY_RETURN from zconf.in.h
-- Expand use of NO_DUMMY_DECL to avoid all dummy structures
-- Added iostream3 to contrib [Schwardt]
-- Replace rewind() with fseek() for WinCE [Truta]
-- Improve setting of zlib format compression level flags
- - Report 0 for huffman and rle strategies and for level == 0 or 1
- - Report 2 only for level == 6
-- Only deal with 64K limit when necessary at compile time [Truta]
-- Allow TOO_FAR check to be turned off at compile time [Truta]
-- Add gzclearerr() function [Souza]
-- Add gzungetc() function
-
-Changes in 1.2.0.1 (17 March 2003)
-- Add Z_RLE strategy for run-length encoding [Truta]
- - When Z_RLE requested, restrict matches to distance one
- - Update zlib.h, minigzip.c, gzopen(), gzdopen() for Z_RLE
-- Correct FASTEST compilation to allow level == 0
-- Clean up what gets compiled for FASTEST
-- Incorporate changes to zconf.in.h [Vollant]
- - Refine detection of Turbo C need for dummy returns
- - Refine ZLIB_DLL compilation
- - Include additional header file on VMS for off_t typedef
-- Try to use _vsnprintf where it supplants vsprintf [Vollant]
-- Add some casts in inffast.c
-- Enchance comments in zlib.h on what happens if gzprintf() tries to
- write more than 4095 bytes before compression
-- Remove unused state from inflateBackEnd()
-- Remove exit(0) from minigzip.c, example.c
-- Get rid of all those darn tabs
-- Add "check" target to Makefile.in that does the same thing as "test"
-- Add "mostlyclean" and "maintainer-clean" targets to Makefile.in
-- Update contrib/inflate86 [Anderson]
-- Update contrib/testzlib, contrib/vstudio, contrib/minizip [Vollant]
-- Add msdos and win32 directories with makefiles [Truta]
-- More additions and improvements to the FAQ
-
-Changes in 1.2.0 (9 March 2003)
-- New and improved inflate code
- - About 20% faster
- - Does not allocate 32K window unless and until needed
- - Automatically detects and decompresses gzip streams
- - Raw inflate no longer needs an extra dummy byte at end
- - Added inflateBack functions using a callback interface--even faster
- than inflate, useful for file utilities (gzip, zip)
- - Added inflateCopy() function to record state for random access on
- externally generated deflate streams (e.g. in gzip files)
- - More readable code (I hope)
-- New and improved crc32()
- - About 50% faster, thanks to suggestions from Rodney Brown
-- Add deflateBound() and compressBound() functions
-- Fix memory leak in deflateInit2()
-- Permit setting dictionary for raw deflate (for parallel deflate)
-- Fix const declaration for gzwrite()
-- Check for some malloc() failures in gzio.c
-- Fix bug in gzopen() on single-byte file 0x1f
-- Fix bug in gzread() on concatenated file with 0x1f at end of buffer
- and next buffer doesn't start with 0x8b
-- Fix uncompress() to return Z_DATA_ERROR on truncated input
-- Free memory at end of example.c
-- Remove MAX #define in trees.c (conflicted with some libraries)
-- Fix static const's in deflate.c, gzio.c, and zutil.[ch]
-- Declare malloc() and free() in gzio.c if STDC not defined
-- Use malloc() instead of calloc() in zutil.c if int big enough
-- Define STDC for AIX
-- Add aix/ with approach for compiling shared library on AIX
-- Add HP-UX support for shared libraries in configure
-- Add OpenUNIX support for shared libraries in configure
-- Use $cc instead of gcc to build shared library
-- Make prefix directory if needed when installing
-- Correct Macintosh avoidance of typedef Byte in zconf.h
-- Correct Turbo C memory allocation when under Linux
-- Use libz.a instead of -lz in Makefile (assure use of compiled library)
-- Update configure to check for snprintf or vsnprintf functions and their
- return value, warn during make if using an insecure function
-- Fix configure problem with compile-time knowledge of HAVE_UNISTD_H that
- is lost when library is used--resolution is to build new zconf.h
-- Documentation improvements (in zlib.h):
- - Document raw deflate and inflate
- - Update RFCs URL
- - Point out that zlib and gzip formats are different
- - Note that Z_BUF_ERROR is not fatal
- - Document string limit for gzprintf() and possible buffer overflow
- - Note requirement on avail_out when flushing
- - Note permitted values of flush parameter of inflate()
-- Add some FAQs (and even answers) to the FAQ
-- Add contrib/inflate86/ for x86 faster inflate
-- Add contrib/blast/ for PKWare Data Compression Library decompression
-- Add contrib/puff/ simple inflate for deflate format description
-
-Changes in 1.1.4 (11 March 2002)
-- ZFREE was repeated on same allocation on some error conditions.
- This creates a security problem described in
- http://www.zlib.org/advisory-2002-03-11.txt
-- Returned incorrect error (Z_MEM_ERROR) on some invalid data
-- Avoid accesses before window for invalid distances with inflate window
- less than 32K.
-- force windowBits > 8 to avoid a bug in the encoder for a window size
- of 256 bytes. (A complete fix will be available in 1.1.5).
-
-Changes in 1.1.3 (9 July 1998)
-- fix "an inflate input buffer bug that shows up on rare but persistent
- occasions" (Mark)
-- fix gzread and gztell for concatenated .gz files (Didier Le Botlan)
-- fix gzseek(..., SEEK_SET) in write mode
-- fix crc check after a gzeek (Frank Faubert)
-- fix miniunzip when the last entry in a zip file is itself a zip file
- (J Lillge)
-- add contrib/asm586 and contrib/asm686 (Brian Raiter)
- See http://www.muppetlabs.com/~breadbox/software/assembly.html
-- add support for Delphi 3 in contrib/delphi (Bob Dellaca)
-- add support for C++Builder 3 and Delphi 3 in contrib/delphi2 (Davide Moretti)
-- do not exit prematurely in untgz if 0 at start of block (Magnus Holmgren)
-- use macro EXTERN instead of extern to support DLL for BeOS (Sander Stoks)
-- added a FAQ file
-
-- Support gzdopen on Mac with Metrowerks (Jason Linhart)
-- Do not redefine Byte on Mac (Brad Pettit & Jason Linhart)
-- define SEEK_END too if SEEK_SET is not defined (Albert Chin-A-Young)
-- avoid some warnings with Borland C (Tom Tanner)
-- fix a problem in contrib/minizip/zip.c for 16-bit MSDOS (Gilles Vollant)
-- emulate utime() for WIN32 in contrib/untgz (Gilles Vollant)
-- allow several arguments to configure (Tim Mooney, Frodo Looijaard)
-- use libdir and includedir in Makefile.in (Tim Mooney)
-- support shared libraries on OSF1 V4 (Tim Mooney)
-- remove so_locations in "make clean" (Tim Mooney)
-- fix maketree.c compilation error (Glenn, Mark)
-- Python interface to zlib now in Python 1.5 (Jeremy Hylton)
-- new Makefile.riscos (Rich Walker)
-- initialize static descriptors in trees.c for embedded targets (Nick Smith)
-- use "foo-gz" in example.c for RISCOS and VMS (Nick Smith)
-- add the OS/2 files in Makefile.in too (Andrew Zabolotny)
-- fix fdopen and halloc macros for Microsoft C 6.0 (Tom Lane)
-- fix maketree.c to allow clean compilation of inffixed.h (Mark)
-- fix parameter check in deflateCopy (Gunther Nikl)
-- cleanup trees.c, use compressed_len only in debug mode (Christian Spieler)
-- Many portability patches by Christian Spieler:
- . zutil.c, zutil.h: added "const" for zmem*
- . Make_vms.com: fixed some typos
- . Make_vms.com: msdos/Makefile.*: removed zutil.h from some dependency lists
- . msdos/Makefile.msc: remove "default rtl link library" info from obj files
- . msdos/Makefile.*: use model-dependent name for the built zlib library
- . msdos/Makefile.emx, nt/Makefile.emx, nt/Makefile.gcc:
- new makefiles, for emx (DOS/OS2), emx&rsxnt and mingw32 (Windows 9x / NT)
-- use define instead of typedef for Bytef also for MSC small/medium (Tom Lane)
-- replace __far with _far for better portability (Christian Spieler, Tom Lane)
-- fix test for errno.h in configure (Tim Newsham)
-
-Changes in 1.1.2 (19 March 98)
-- added contrib/minzip, mini zip and unzip based on zlib (Gilles Vollant)
- See http://www.winimage.com/zLibDll/unzip.html
-- preinitialize the inflate tables for fixed codes, to make the code
- completely thread safe (Mark)
-- some simplifications and slight speed-up to the inflate code (Mark)
-- fix gzeof on non-compressed files (Allan Schrum)
-- add -std1 option in configure for OSF1 to fix gzprintf (Martin Mokrejs)
-- use default value of 4K for Z_BUFSIZE for 16-bit MSDOS (Tim Wegner + Glenn)
-- added os2/Makefile.def and os2/zlib.def (Andrew Zabolotny)
-- add shared lib support for UNIX_SV4.2MP (MATSUURA Takanori)
-- do not wrap extern "C" around system includes (Tom Lane)
-- mention zlib binding for TCL in README (Andreas Kupries)
-- added amiga/Makefile.pup for Amiga powerUP SAS/C PPC (Andreas Kleinert)
-- allow "make install prefix=..." even after configure (Glenn Randers-Pehrson)
-- allow "configure --prefix $HOME" (Tim Mooney)
-- remove warnings in example.c and gzio.c (Glenn Randers-Pehrson)
-- move Makefile.sas to amiga/Makefile.sas
-
-Changes in 1.1.1 (27 Feb 98)
-- fix macros _tr_tally_* in deflate.h for debug mode (Glenn Randers-Pehrson)
-- remove block truncation heuristic which had very marginal effect for zlib
- (smaller lit_bufsize than in gzip 1.2.4) and degraded a little the
- compression ratio on some files. This also allows inlining _tr_tally for
- matches in deflate_slow.
-- added msdos/Makefile.w32 for WIN32 Microsoft Visual C++ (Bob Frazier)
-
-Changes in 1.1.0 (24 Feb 98)
-- do not return STREAM_END prematurely in inflate (John Bowler)
-- revert to the zlib 1.0.8 inflate to avoid the gcc 2.8.0 bug (Jeremy Buhler)
-- compile with -DFASTEST to get compression code optimized for speed only
-- in minigzip, try mmap'ing the input file first (Miguel Albrecht)
-- increase size of I/O buffers in minigzip.c and gzio.c (not a big gain
- on Sun but significant on HP)
-
-- add a pointer to experimental unzip library in README (Gilles Vollant)
-- initialize variable gcc in configure (Chris Herborth)
-
-Changes in 1.0.9 (17 Feb 1998)
-- added gzputs and gzgets functions
-- do not clear eof flag in gzseek (Mark Diekhans)
-- fix gzseek for files in transparent mode (Mark Diekhans)
-- do not assume that vsprintf returns the number of bytes written (Jens Krinke)
-- replace EXPORT with ZEXPORT to avoid conflict with other programs
-- added compress2 in zconf.h, zlib.def, zlib.dnt
-- new asm code from Gilles Vollant in contrib/asm386
-- simplify the inflate code (Mark):
- . Replace ZALLOC's in huft_build() with single ZALLOC in inflate_blocks_new()
- . ZALLOC the length list in inflate_trees_fixed() instead of using stack
- . ZALLOC the value area for huft_build() instead of using stack
- . Simplify Z_FINISH check in inflate()
-
-- Avoid gcc 2.8.0 comparison bug a little differently than zlib 1.0.8
-- in inftrees.c, avoid cc -O bug on HP (Farshid Elahi)
-- in zconf.h move the ZLIB_DLL stuff earlier to avoid problems with
- the declaration of FAR (Gilles VOllant)
-- install libz.so* with mode 755 (executable) instead of 644 (Marc Lehmann)
-- read_buf buf parameter of type Bytef* instead of charf*
-- zmemcpy parameters are of type Bytef*, not charf* (Joseph Strout)
-- do not redeclare unlink in minigzip.c for WIN32 (John Bowler)
-- fix check for presence of directories in "make install" (Ian Willis)
-
-Changes in 1.0.8 (27 Jan 1998)
-- fixed offsets in contrib/asm386/gvmat32.asm (Gilles Vollant)
-- fix gzgetc and gzputc for big endian systems (Markus Oberhumer)
-- added compress2() to allow setting the compression level
-- include sys/types.h to get off_t on some systems (Marc Lehmann & QingLong)
-- use constant arrays for the static trees in trees.c instead of computing
- them at run time (thanks to Ken Raeburn for this suggestion). To create
- trees.h, compile with GEN_TREES_H and run "make test".
-- check return code of example in "make test" and display result
-- pass minigzip command line options to file_compress
-- simplifying code of inflateSync to avoid gcc 2.8 bug
-
-- support CC="gcc -Wall" in configure -s (QingLong)
-- avoid a flush caused by ftell in gzopen for write mode (Ken Raeburn)
-- fix test for shared library support to avoid compiler warnings
-- zlib.lib -> zlib.dll in msdos/zlib.rc (Gilles Vollant)
-- check for TARGET_OS_MAC in addition to MACOS (Brad Pettit)
-- do not use fdopen for Metrowerks on Mac (Brad Pettit))
-- add checks for gzputc and gzputc in example.c
-- avoid warnings in gzio.c and deflate.c (Andreas Kleinert)
-- use const for the CRC table (Ken Raeburn)
-- fixed "make uninstall" for shared libraries
-- use Tracev instead of Trace in infblock.c
-- in example.c use correct compressed length for test_sync
-- suppress +vnocompatwarnings in configure for HPUX (not always supported)
-
-Changes in 1.0.7 (20 Jan 1998)
-- fix gzseek which was broken in write mode
-- return error for gzseek to negative absolute position
-- fix configure for Linux (Chun-Chung Chen)
-- increase stack space for MSC (Tim Wegner)
-- get_crc_table and inflateSyncPoint are EXPORTed (Gilles Vollant)
-- define EXPORTVA for gzprintf (Gilles Vollant)
-- added man page zlib.3 (Rick Rodgers)
-- for contrib/untgz, fix makedir() and improve Makefile
-
-- check gzseek in write mode in example.c
-- allocate extra buffer for seeks only if gzseek is actually called
-- avoid signed/unsigned comparisons (Tim Wegner, Gilles Vollant)
-- add inflateSyncPoint in zconf.h
-- fix list of exported functions in nt/zlib.dnt and mdsos/zlib.def
-
-Changes in 1.0.6 (19 Jan 1998)
-- add functions gzprintf, gzputc, gzgetc, gztell, gzeof, gzseek, gzrewind and
- gzsetparams (thanks to Roland Giersig and Kevin Ruland for some of this code)
-- Fix a deflate bug occurring only with compression level 0 (thanks to
- Andy Buckler for finding this one).
-- In minigzip, pass transparently also the first byte for .Z files.
-- return Z_BUF_ERROR instead of Z_OK if output buffer full in uncompress()
-- check Z_FINISH in inflate (thanks to Marc Schluper)
-- Implement deflateCopy (thanks to Adam Costello)
-- make static libraries by default in configure, add --shared option.
-- move MSDOS or Windows specific files to directory msdos
-- suppress the notion of partial flush to simplify the interface
- (but the symbol Z_PARTIAL_FLUSH is kept for compatibility with 1.0.4)
-- suppress history buffer provided by application to simplify the interface
- (this feature was not implemented anyway in 1.0.4)
-- next_in and avail_in must be initialized before calling inflateInit or
- inflateInit2
-- add EXPORT in all exported functions (for Windows DLL)
-- added Makefile.nt (thanks to Stephen Williams)
-- added the unsupported "contrib" directory:
- contrib/asm386/ by Gilles Vollant <info@winimage.com>
- 386 asm code replacing longest_match().
- contrib/iostream/ by Kevin Ruland <kevin@rodin.wustl.edu>
- A C++ I/O streams interface to the zlib gz* functions
- contrib/iostream2/ by Tyge Løvset <Tyge.Lovset@cmr.no>
- Another C++ I/O streams interface
- contrib/untgz/ by "Pedro A. Aranda Guti\irrez" <paag@tid.es>
- A very simple tar.gz file extractor using zlib
- contrib/visual-basic.txt by Carlos Rios <c_rios@sonda.cl>
- How to use compress(), uncompress() and the gz* functions from VB.
-- pass params -f (filtered data), -h (huffman only), -1 to -9 (compression
- level) in minigzip (thanks to Tom Lane)
-
-- use const for rommable constants in deflate
-- added test for gzseek and gztell in example.c
-- add undocumented function inflateSyncPoint() (hack for Paul Mackerras)
-- add undocumented function zError to convert error code to string
- (for Tim Smithers)
-- Allow compilation of gzio with -DNO_DEFLATE to avoid the compression code.
-- Use default memcpy for Symantec MSDOS compiler.
-- Add EXPORT keyword for check_func (needed for Windows DLL)
-- add current directory to LD_LIBRARY_PATH for "make test"
-- create also a link for libz.so.1
-- added support for FUJITSU UXP/DS (thanks to Toshiaki Nomura)
-- use $(SHAREDLIB) instead of libz.so in Makefile.in (for HPUX)
-- added -soname for Linux in configure (Chun-Chung Chen,
-- assign numbers to the exported functions in zlib.def (for Windows DLL)
-- add advice in zlib.h for best usage of deflateSetDictionary
-- work around compiler bug on Atari (cast Z_NULL in call of s->checkfn)
-- allow compilation with ANSI keywords only enabled for TurboC in large model
-- avoid "versionString"[0] (Borland bug)
-- add NEED_DUMMY_RETURN for Borland
-- use variable z_verbose for tracing in debug mode (L. Peter Deutsch).
-- allow compilation with CC
-- defined STDC for OS/2 (David Charlap)
-- limit external names to 8 chars for MVS (Thomas Lund)
-- in minigzip.c, use static buffers only for 16-bit systems
-- fix suffix check for "minigzip -d foo.gz"
-- do not return an error for the 2nd of two consecutive gzflush() (Felix Lee)
-- use _fdopen instead of fdopen for MSC >= 6.0 (Thomas Fanslau)
-- added makelcc.bat for lcc-win32 (Tom St Denis)
-- in Makefile.dj2, use copy and del instead of install and rm (Frank Donahoe)
-- Avoid expanded $Id$. Use "rcs -kb" or "cvs admin -kb" to avoid Id expansion.
-- check for unistd.h in configure (for off_t)
-- remove useless check parameter in inflate_blocks_free
-- avoid useless assignment of s->check to itself in inflate_blocks_new
-- do not flush twice in gzclose (thanks to Ken Raeburn)
-- rename FOPEN as F_OPEN to avoid clash with /usr/include/sys/file.h
-- use NO_ERRNO_H instead of enumeration of operating systems with errno.h
-- work around buggy fclose on pipes for HP/UX
-- support zlib DLL with BORLAND C++ 5.0 (thanks to Glenn Randers-Pehrson)
-- fix configure if CC is already equal to gcc
-
-Changes in 1.0.5 (3 Jan 98)
-- Fix inflate to terminate gracefully when fed corrupted or invalid data
-- Use const for rommable constants in inflate
-- Eliminate memory leaks on error conditions in inflate
-- Removed some vestigial code in inflate
-- Update web address in README
-
-Changes in 1.0.4 (24 Jul 96)
-- In very rare conditions, deflate(s, Z_FINISH) could fail to produce an EOF
- bit, so the decompressor could decompress all the correct data but went
- on to attempt decompressing extra garbage data. This affected minigzip too.
-- zlibVersion and gzerror return const char* (needed for DLL)
-- port to RISCOS (no fdopen, no multiple dots, no unlink, no fileno)
-- use z_error only for DEBUG (avoid problem with DLLs)
-
-Changes in 1.0.3 (2 Jul 96)
-- use z_streamp instead of z_stream *, which is now a far pointer in MSDOS
- small and medium models; this makes the library incompatible with previous
- versions for these models. (No effect in large model or on other systems.)
-- return OK instead of BUF_ERROR if previous deflate call returned with
- avail_out as zero but there is nothing to do
-- added memcmp for non STDC compilers
-- define NO_DUMMY_DECL for more Mac compilers (.h files merged incorrectly)
-- define __32BIT__ if __386__ or i386 is defined (pb. with Watcom and SCO)
-- better check for 16-bit mode MSC (avoids problem with Symantec)
-
-Changes in 1.0.2 (23 May 96)
-- added Windows DLL support
-- added a function zlibVersion (for the DLL support)
-- fixed declarations using Bytef in infutil.c (pb with MSDOS medium model)
-- Bytef is define's instead of typedef'd only for Borland C
-- avoid reading uninitialized memory in example.c
-- mention in README that the zlib format is now RFC1950
-- updated Makefile.dj2
-- added algorithm.doc
-
-Changes in 1.0.1 (20 May 96) [1.0 skipped to avoid confusion]
-- fix array overlay in deflate.c which sometimes caused bad compressed data
-- fix inflate bug with empty stored block
-- fix MSDOS medium model which was broken in 0.99
-- fix deflateParams() which could generated bad compressed data.
-- Bytef is define'd instead of typedef'ed (work around Borland bug)
-- added an INDEX file
-- new makefiles for DJGPP (Makefile.dj2), 32-bit Borland (Makefile.b32),
- Watcom (Makefile.wat), Amiga SAS/C (Makefile.sas)
-- speed up adler32 for modern machines without auto-increment
-- added -ansi for IRIX in configure
-- static_init_done in trees.c is an int
-- define unlink as delete for VMS
-- fix configure for QNX
-- add configure branch for SCO and HPUX
-- avoid many warnings (unused variables, dead assignments, etc...)
-- no fdopen for BeOS
-- fix the Watcom fix for 32 bit mode (define FAR as empty)
-- removed redefinition of Byte for MKWERKS
-- work around an MWKERKS bug (incorrect merge of all .h files)
-
-Changes in 0.99 (27 Jan 96)
-- allow preset dictionary shared between compressor and decompressor
-- allow compression level 0 (no compression)
-- add deflateParams in zlib.h: allow dynamic change of compression level
- and compression strategy.
-- test large buffers and deflateParams in example.c
-- add optional "configure" to build zlib as a shared library
-- suppress Makefile.qnx, use configure instead
-- fixed deflate for 64-bit systems (detected on Cray)
-- fixed inflate_blocks for 64-bit systems (detected on Alpha)
-- declare Z_DEFLATED in zlib.h (possible parameter for deflateInit2)
-- always return Z_BUF_ERROR when deflate() has nothing to do
-- deflateInit and inflateInit are now macros to allow version checking
-- prefix all global functions and types with z_ with -DZ_PREFIX
-- make falloc completely reentrant (inftrees.c)
-- fixed very unlikely race condition in ct_static_init
-- free in reverse order of allocation to help memory manager
-- use zlib-1.0/* instead of zlib/* inside the tar.gz
-- make zlib warning-free with "gcc -O3 -Wall -Wwrite-strings -Wpointer-arith
- -Wconversion -Wstrict-prototypes -Wmissing-prototypes"
-- allow gzread on concatenated .gz files
-- deflateEnd now returns Z_DATA_ERROR if it was premature
-- deflate is finally (?) fully deterministic (no matches beyond end of input)
-- Document Z_SYNC_FLUSH
-- add uninstall in Makefile
-- Check for __cpluplus in zlib.h
-- Better test in ct_align for partial flush
-- avoid harmless warnings for Borland C++
-- initialize hash_head in deflate.c
-- avoid warning on fdopen (gzio.c) for HP cc -Aa
-- include stdlib.h for STDC compilers
-- include errno.h for Cray
-- ignore error if ranlib doesn't exist
-- call ranlib twice for NeXTSTEP
-- use exec_prefix instead of prefix for libz.a
-- renamed ct_* as _tr_* to avoid conflict with applications
-- clear z->msg in inflateInit2 before any error return
-- initialize opaque in example.c, gzio.c, deflate.c and inflate.c
-- fixed typo in zconf.h (_GNUC__ => __GNUC__)
-- check for WIN32 in zconf.h and zutil.c (avoid farmalloc in 32-bit mode)
-- fix typo in Make_vms.com (f$trnlnm -> f$getsyi)
-- in fcalloc, normalize pointer if size > 65520 bytes
-- don't use special fcalloc for 32 bit Borland C++
-- use STDC instead of __GO32__ to avoid redeclaring exit, calloc, etc...
-- use Z_BINARY instead of BINARY
-- document that gzclose after gzdopen will close the file
-- allow "a" as mode in gzopen.
-- fix error checking in gzread
-- allow skipping .gz extra-field on pipes
-- added reference to Perl interface in README
-- put the crc table in FAR data (I dislike more and more the medium model :)
-- added get_crc_table
-- added a dimension to all arrays (Borland C can't count).
-- workaround Borland C bug in declaration of inflate_codes_new & inflate_fast
-- guard against multiple inclusion of *.h (for precompiled header on Mac)
-- Watcom C pretends to be Microsoft C small model even in 32 bit mode.
-- don't use unsized arrays to avoid silly warnings by Visual C++:
- warning C4746: 'inflate_mask' : unsized array treated as '__far'
- (what's wrong with far data in far model?).
-- define enum out of inflate_blocks_state to allow compilation with C++
-
-Changes in 0.95 (16 Aug 95)
-- fix MSDOS small and medium model (now easier to adapt to any compiler)
-- inlined send_bits
-- fix the final (:-) bug for deflate with flush (output was correct but
- not completely flushed in rare occasions).
-- default window size is same for compression and decompression
- (it's now sufficient to set MAX_WBITS in zconf.h).
-- voidp -> voidpf and voidnp -> voidp (for consistency with other
- typedefs and because voidnp was not near in large model).
-
-Changes in 0.94 (13 Aug 95)
-- support MSDOS medium model
-- fix deflate with flush (could sometimes generate bad output)
-- fix deflateReset (zlib header was incorrectly suppressed)
-- added support for VMS
-- allow a compression level in gzopen()
-- gzflush now calls fflush
-- For deflate with flush, flush even if no more input is provided.
-- rename libgz.a as libz.a
-- avoid complex expression in infcodes.c triggering Turbo C bug
-- work around a problem with gcc on Alpha (in INSERT_STRING)
-- don't use inline functions (problem with some gcc versions)
-- allow renaming of Byte, uInt, etc... with #define.
-- avoid warning about (unused) pointer before start of array in deflate.c
-- avoid various warnings in gzio.c, example.c, infblock.c, adler32.c, zutil.c
-- avoid reserved word 'new' in trees.c
-
-Changes in 0.93 (25 June 95)
-- temporarily disable inline functions
-- make deflate deterministic
-- give enough lookahead for PARTIAL_FLUSH
-- Set binary mode for stdin/stdout in minigzip.c for OS/2
-- don't even use signed char in inflate (not portable enough)
-- fix inflate memory leak for segmented architectures
-
-Changes in 0.92 (3 May 95)
-- don't assume that char is signed (problem on SGI)
-- Clear bit buffer when starting a stored block
-- no memcpy on Pyramid
-- suppressed inftest.c
-- optimized fill_window, put longest_match inline for gcc
-- optimized inflate on stored blocks.
-- untabify all sources to simplify patches
-
-Changes in 0.91 (2 May 95)
-- Default MEM_LEVEL is 8 (not 9 for Unix) as documented in zlib.h
-- Document the memory requirements in zconf.h
-- added "make install"
-- fix sync search logic in inflateSync
-- deflate(Z_FULL_FLUSH) now works even if output buffer too short
-- after inflateSync, don't scare people with just "lo world"
-- added support for DJGPP
-
-Changes in 0.9 (1 May 95)
-- don't assume that zalloc clears the allocated memory (the TurboC bug
- was Mark's bug after all :)
-- let again gzread copy uncompressed data unchanged (was working in 0.71)
-- deflate(Z_FULL_FLUSH), inflateReset and inflateSync are now fully implemented
-- added a test of inflateSync in example.c
-- moved MAX_WBITS to zconf.h because users might want to change that.
-- document explicitly that zalloc(64K) on MSDOS must return a normalized
- pointer (zero offset)
-- added Makefiles for Microsoft C, Turbo C, Borland C++
-- faster crc32()
-
-Changes in 0.8 (29 April 95)
-- added fast inflate (inffast.c)
-- deflate(Z_FINISH) now returns Z_STREAM_END when done. Warning: this
- is incompatible with previous versions of zlib which returned Z_OK.
-- work around a TurboC compiler bug (bad code for b << 0, see infutil.h)
- (actually that was not a compiler bug, see 0.81 above)
-- gzread no longer reads one extra byte in certain cases
-- In gzio destroy(), don't reference a freed structure
-- avoid many warnings for MSDOS
-- avoid the ERROR symbol which is used by MS Windows
-
-Changes in 0.71 (14 April 95)
-- Fixed more MSDOS compilation problems :( There is still a bug with
- TurboC large model.
-
-Changes in 0.7 (14 April 95)
-- Added full inflate support.
-- Simplified the crc32() interface. The pre- and post-conditioning
- (one's complement) is now done inside crc32(). WARNING: this is
- incompatible with previous versions; see zlib.h for the new usage.
-
-Changes in 0.61 (12 April 95)
-- workaround for a bug in TurboC. example and minigzip now work on MSDOS.
-
-Changes in 0.6 (11 April 95)
-- added minigzip.c
-- added gzdopen to reopen a file descriptor as gzFile
-- added transparent reading of non-gziped files in gzread.
-- fixed bug in gzread (don't read crc as data)
-- fixed bug in destroy (gzio.c) (don't return Z_STREAM_END for gzclose).
-- don't allocate big arrays in the stack (for MSDOS)
-- fix some MSDOS compilation problems
-
-Changes in 0.5:
-- do real compression in deflate.c. Z_PARTIAL_FLUSH is supported but
- not yet Z_FULL_FLUSH.
-- support decompression but only in a single step (forced Z_FINISH)
-- added opaque object for zalloc and zfree.
-- added deflateReset and inflateReset
-- added a variable zlib_version for consistency checking.
-- renamed the 'filter' parameter of deflateInit2 as 'strategy'.
- Added Z_FILTERED and Z_HUFFMAN_ONLY constants.
-
-Changes in 0.4:
-- avoid "zip" everywhere, use zlib instead of ziplib.
-- suppress Z_BLOCK_FLUSH, interpret Z_PARTIAL_FLUSH as block flush
- if compression method == 8.
-- added adler32 and crc32
-- renamed deflateOptions as deflateInit2, call one or the other but not both
-- added the method parameter for deflateInit2.
-- added inflateInit2
-- simplied considerably deflateInit and inflateInit by not supporting
- user-provided history buffer. This is supported only in deflateInit2
- and inflateInit2.
-
-Changes in 0.3:
-- prefix all macro names with Z_
-- use Z_FINISH instead of deflateEnd to finish compression.
-- added Z_HUFFMAN_ONLY
-- added gzerror()
+++ /dev/null
-
- Frequently Asked Questions about zlib
-
-
-If your question is not there, please check the zlib home page
-http://zlib.net/ which may have more recent information.
-The lastest zlib FAQ is at http://zlib.net/zlib_faq.html
-
-
- 1. Is zlib Y2K-compliant?
-
- Yes. zlib doesn't handle dates.
-
- 2. Where can I get a Windows DLL version?
-
- The zlib sources can be compiled without change to produce a DLL. See the
- file win32/DLL_FAQ.txt in the zlib distribution. Pointers to the
- precompiled DLL are found in the zlib web site at http://zlib.net/ .
-
- 3. Where can I get a Visual Basic interface to zlib?
-
- See
- * http://marknelson.us/1997/01/01/zlib-engine/
- * win32/DLL_FAQ.txt in the zlib distribution
-
- 4. compress() returns Z_BUF_ERROR.
-
- Make sure that before the call of compress(), the length of the compressed
- buffer is equal to the available size of the compressed buffer and not
- zero. For Visual Basic, check that this parameter is passed by reference
- ("as any"), not by value ("as long").
-
- 5. deflate() or inflate() returns Z_BUF_ERROR.
-
- Before making the call, make sure that avail_in and avail_out are not zero.
- When setting the parameter flush equal to Z_FINISH, also make sure that
- avail_out is big enough to allow processing all pending input. Note that a
- Z_BUF_ERROR is not fatal--another call to deflate() or inflate() can be
- made with more input or output space. A Z_BUF_ERROR may in fact be
- unavoidable depending on how the functions are used, since it is not
- possible to tell whether or not there is more output pending when
- strm.avail_out returns with zero. See http://zlib.net/zlib_how.html for a
- heavily annotated example.
-
- 6. Where's the zlib documentation (man pages, etc.)?
-
- It's in zlib.h . Examples of zlib usage are in the files test/example.c
- and test/minigzip.c, with more in examples/ .
-
- 7. Why don't you use GNU autoconf or libtool or ...?
-
- Because we would like to keep zlib as a very small and simple package.
- zlib is rather portable and doesn't need much configuration.
-
- 8. I found a bug in zlib.
-
- Most of the time, such problems are due to an incorrect usage of zlib.
- Please try to reproduce the problem with a small program and send the
- corresponding source to us at zlib@gzip.org . Do not send multi-megabyte
- data files without prior agreement.
-
- 9. Why do I get "undefined reference to gzputc"?
-
- If "make test" produces something like
-
- example.o(.text+0x154): undefined reference to `gzputc'
-
- check that you don't have old files libz.* in /usr/lib, /usr/local/lib or
- /usr/X11R6/lib. Remove any old versions, then do "make install".
-
-10. I need a Delphi interface to zlib.
-
- See the contrib/delphi directory in the zlib distribution.
-
-11. Can zlib handle .zip archives?
-
- Not by itself, no. See the directory contrib/minizip in the zlib
- distribution.
-
-12. Can zlib handle .Z files?
-
- No, sorry. You have to spawn an uncompress or gunzip subprocess, or adapt
- the code of uncompress on your own.
-
-13. How can I make a Unix shared library?
-
- By default a shared (and a static) library is built for Unix. So:
-
- make distclean
- ./configure
- make
-
-14. How do I install a shared zlib library on Unix?
-
- After the above, then:
-
- make install
-
- However, many flavors of Unix come with a shared zlib already installed.
- Before going to the trouble of compiling a shared version of zlib and
- trying to install it, you may want to check if it's already there! If you
- can #include <zlib.h>, it's there. The -lz option will probably link to
- it. You can check the version at the top of zlib.h or with the
- ZLIB_VERSION symbol defined in zlib.h .
-
-15. I have a question about OttoPDF.
-
- We are not the authors of OttoPDF. The real author is on the OttoPDF web
- site: Joel Hainley, jhainley@myndkryme.com.
-
-16. Can zlib decode Flate data in an Adobe PDF file?
-
- Yes. See http://www.pdflib.com/ . To modify PDF forms, see
- http://sourceforge.net/projects/acroformtool/ .
-
-17. Why am I getting this "register_frame_info not found" error on Solaris?
-
- After installing zlib 1.1.4 on Solaris 2.6, running applications using zlib
- generates an error such as:
-
- ld.so.1: rpm: fatal: relocation error: file /usr/local/lib/libz.so:
- symbol __register_frame_info: referenced symbol not found
-
- The symbol __register_frame_info is not part of zlib, it is generated by
- the C compiler (cc or gcc). You must recompile applications using zlib
- which have this problem. This problem is specific to Solaris. See
- http://www.sunfreeware.com for Solaris versions of zlib and applications
- using zlib.
-
-18. Why does gzip give an error on a file I make with compress/deflate?
-
- The compress and deflate functions produce data in the zlib format, which
- is different and incompatible with the gzip format. The gz* functions in
- zlib on the other hand use the gzip format. Both the zlib and gzip formats
- use the same compressed data format internally, but have different headers
- and trailers around the compressed data.
-
-19. Ok, so why are there two different formats?
-
- The gzip format was designed to retain the directory information about a
- single file, such as the name and last modification date. The zlib format
- on the other hand was designed for in-memory and communication channel
- applications, and has a much more compact header and trailer and uses a
- faster integrity check than gzip.
-
-20. Well that's nice, but how do I make a gzip file in memory?
-
- You can request that deflate write the gzip format instead of the zlib
- format using deflateInit2(). You can also request that inflate decode the
- gzip format using inflateInit2(). Read zlib.h for more details.
-
-21. Is zlib thread-safe?
-
- Yes. However any library routines that zlib uses and any application-
- provided memory allocation routines must also be thread-safe. zlib's gz*
- functions use stdio library routines, and most of zlib's functions use the
- library memory allocation routines by default. zlib's *Init* functions
- allow for the application to provide custom memory allocation routines.
-
- Of course, you should only operate on any given zlib or gzip stream from a
- single thread at a time.
-
-22. Can I use zlib in my commercial application?
-
- Yes. Please read the license in zlib.h.
-
-23. Is zlib under the GNU license?
-
- No. Please read the license in zlib.h.
-
-24. The license says that altered source versions must be "plainly marked". So
- what exactly do I need to do to meet that requirement?
-
- You need to change the ZLIB_VERSION and ZLIB_VERNUM #defines in zlib.h. In
- particular, the final version number needs to be changed to "f", and an
- identification string should be appended to ZLIB_VERSION. Version numbers
- x.x.x.f are reserved for modifications to zlib by others than the zlib
- maintainers. For example, if the version of the base zlib you are altering
- is "1.2.3.4", then in zlib.h you should change ZLIB_VERNUM to 0x123f, and
- ZLIB_VERSION to something like "1.2.3.f-zachary-mods-v3". You can also
- update the version strings in deflate.c and inftrees.c.
-
- For altered source distributions, you should also note the origin and
- nature of the changes in zlib.h, as well as in ChangeLog and README, along
- with the dates of the alterations. The origin should include at least your
- name (or your company's name), and an email address to contact for help or
- issues with the library.
-
- Note that distributing a compiled zlib library along with zlib.h and
- zconf.h is also a source distribution, and so you should change
- ZLIB_VERSION and ZLIB_VERNUM and note the origin and nature of the changes
- in zlib.h as you would for a full source distribution.
-
-25. Will zlib work on a big-endian or little-endian architecture, and can I
- exchange compressed data between them?
-
- Yes and yes.
-
-26. Will zlib work on a 64-bit machine?
-
- Yes. It has been tested on 64-bit machines, and has no dependence on any
- data types being limited to 32-bits in length. If you have any
- difficulties, please provide a complete problem report to zlib@gzip.org
-
-27. Will zlib decompress data from the PKWare Data Compression Library?
-
- No. The PKWare DCL uses a completely different compressed data format than
- does PKZIP and zlib. However, you can look in zlib's contrib/blast
- directory for a possible solution to your problem.
-
-28. Can I access data randomly in a compressed stream?
-
- No, not without some preparation. If when compressing you periodically use
- Z_FULL_FLUSH, carefully write all the pending data at those points, and
- keep an index of those locations, then you can start decompression at those
- points. You have to be careful to not use Z_FULL_FLUSH too often, since it
- can significantly degrade compression. Alternatively, you can scan a
- deflate stream once to generate an index, and then use that index for
- random access. See examples/zran.c .
-
-29. Does zlib work on MVS, OS/390, CICS, etc.?
-
- It has in the past, but we have not heard of any recent evidence. There
- were working ports of zlib 1.1.4 to MVS, but those links no longer work.
- If you know of recent, successful applications of zlib on these operating
- systems, please let us know. Thanks.
-
-30. Is there some simpler, easier to read version of inflate I can look at to
- understand the deflate format?
-
- First off, you should read RFC 1951. Second, yes. Look in zlib's
- contrib/puff directory.
-
-31. Does zlib infringe on any patents?
-
- As far as we know, no. In fact, that was originally the whole point behind
- zlib. Look here for some more information:
-
- http://www.gzip.org/#faq11
-
-32. Can zlib work with greater than 4 GB of data?
-
- Yes. inflate() and deflate() will process any amount of data correctly.
- Each call of inflate() or deflate() is limited to input and output chunks
- of the maximum value that can be stored in the compiler's "unsigned int"
- type, but there is no limit to the number of chunks. Note however that the
- strm.total_in and strm_total_out counters may be limited to 4 GB. These
- counters are provided as a convenience and are not used internally by
- inflate() or deflate(). The application can easily set up its own counters
- updated after each call of inflate() or deflate() to count beyond 4 GB.
- compress() and uncompress() may be limited to 4 GB, since they operate in a
- single call. gzseek() and gztell() may be limited to 4 GB depending on how
- zlib is compiled. See the zlibCompileFlags() function in zlib.h.
-
- The word "may" appears several times above since there is a 4 GB limit only
- if the compiler's "long" type is 32 bits. If the compiler's "long" type is
- 64 bits, then the limit is 16 exabytes.
-
-33. Does zlib have any security vulnerabilities?
-
- The only one that we are aware of is potentially in gzprintf(). If zlib is
- compiled to use sprintf() or vsprintf(), then there is no protection
- against a buffer overflow of an 8K string space (or other value as set by
- gzbuffer()), other than the caller of gzprintf() assuring that the output
- will not exceed 8K. On the other hand, if zlib is compiled to use
- snprintf() or vsnprintf(), which should normally be the case, then there is
- no vulnerability. The ./configure script will display warnings if an
- insecure variation of sprintf() will be used by gzprintf(). Also the
- zlibCompileFlags() function will return information on what variant of
- sprintf() is used by gzprintf().
-
- If you don't have snprintf() or vsnprintf() and would like one, you can
- find a portable implementation here:
-
- http://www.ijs.si/software/snprintf/
-
- Note that you should be using the most recent version of zlib. Versions
- 1.1.3 and before were subject to a double-free vulnerability, and versions
- 1.2.1 and 1.2.2 were subject to an access exception when decompressing
- invalid compressed data.
-
-34. Is there a Java version of zlib?
-
- Probably what you want is to use zlib in Java. zlib is already included
- as part of the Java SDK in the java.util.zip package. If you really want
- a version of zlib written in the Java language, look on the zlib home
- page for links: http://zlib.net/ .
-
-35. I get this or that compiler or source-code scanner warning when I crank it
- up to maximally-pedantic. Can't you guys write proper code?
-
- Many years ago, we gave up attempting to avoid warnings on every compiler
- in the universe. It just got to be a waste of time, and some compilers
- were downright silly as well as contradicted each other. So now, we simply
- make sure that the code always works.
-
-36. Valgrind (or some similar memory access checker) says that deflate is
- performing a conditional jump that depends on an uninitialized value.
- Isn't that a bug?
-
- No. That is intentional for performance reasons, and the output of deflate
- is not affected. This only started showing up recently since zlib 1.2.x
- uses malloc() by default for allocations, whereas earlier versions used
- calloc(), which zeros out the allocated memory. Even though the code was
- correct, versions 1.2.4 and later was changed to not stimulate these
- checkers.
-
-37. Will zlib read the (insert any ancient or arcane format here) compressed
- data format?
-
- Probably not. Look in the comp.compression FAQ for pointers to various
- formats and associated software.
-
-38. How can I encrypt/decrypt zip files with zlib?
-
- zlib doesn't support encryption. The original PKZIP encryption is very
- weak and can be broken with freely available programs. To get strong
- encryption, use GnuPG, http://www.gnupg.org/ , which already includes zlib
- compression. For PKZIP compatible "encryption", look at
- http://www.info-zip.org/
-
-39. What's the difference between the "gzip" and "deflate" HTTP 1.1 encodings?
-
- "gzip" is the gzip format, and "deflate" is the zlib format. They should
- probably have called the second one "zlib" instead to avoid confusion with
- the raw deflate compressed data format. While the HTTP 1.1 RFC 2616
- correctly points to the zlib specification in RFC 1950 for the "deflate"
- transfer encoding, there have been reports of servers and browsers that
- incorrectly produce or expect raw deflate data per the deflate
- specification in RFC 1951, most notably Microsoft. So even though the
- "deflate" transfer encoding using the zlib format would be the more
- efficient approach (and in fact exactly what the zlib format was designed
- for), using the "gzip" transfer encoding is probably more reliable due to
- an unfortunate choice of name on the part of the HTTP 1.1 authors.
-
- Bottom line: use the gzip format for HTTP 1.1 encoding.
-
-40. Does zlib support the new "Deflate64" format introduced by PKWare?
-
- No. PKWare has apparently decided to keep that format proprietary, since
- they have not documented it as they have previous compression formats. In
- any case, the compression improvements are so modest compared to other more
- modern approaches, that it's not worth the effort to implement.
-
-41. I'm having a problem with the zip functions in zlib, can you help?
-
- There are no zip functions in zlib. You are probably using minizip by
- Giles Vollant, which is found in the contrib directory of zlib. It is not
- part of zlib. In fact none of the stuff in contrib is part of zlib. The
- files in there are not supported by the zlib authors. You need to contact
- the authors of the respective contribution for help.
-
-42. The match.asm code in contrib is under the GNU General Public License.
- Since it's part of zlib, doesn't that mean that all of zlib falls under the
- GNU GPL?
-
- No. The files in contrib are not part of zlib. They were contributed by
- other authors and are provided as a convenience to the user within the zlib
- distribution. Each item in contrib has its own license.
-
-43. Is zlib subject to export controls? What is its ECCN?
-
- zlib is not subject to export controls, and so is classified as EAR99.
-
-44. Can you please sign these lengthy legal documents and fax them back to us
- so that we can use your software in our product?
-
- No. Go away. Shoo.
+++ /dev/null
-CMakeLists.txt cmake build file
-ChangeLog history of changes
-FAQ Frequently Asked Questions about zlib
-INDEX this file
-Makefile dummy Makefile that tells you to ./configure
-Makefile.in template for Unix Makefile
-README guess what
-configure configure script for Unix
-make_vms.com makefile for VMS
-test/example.c zlib usages examples for build testing
-test/minigzip.c minimal gzip-like functionality for build testing
-test/infcover.c inf*.c code coverage for build coverage testing
-treebuild.xml XML description of source file dependencies
-zconf.h.cmakein zconf.h template for cmake
-zconf.h.in zconf.h template for configure
-zlib.3 Man page for zlib
-zlib.3.pdf Man page in PDF format
-zlib.map Linux symbol information
-zlib.pc.in Template for pkg-config descriptor
-zlib.pc.cmakein zlib.pc template for cmake
-zlib2ansi perl script to convert source files for C++ compilation
-
-amiga/ makefiles for Amiga SAS C
-as400/ makefiles for AS/400
-doc/ documentation for formats and algorithms
-msdos/ makefiles for MSDOS
-nintendods/ makefile for Nintendo DS
-old/ makefiles for various architectures and zlib documentation
- files that have not yet been updated for zlib 1.2.x
-qnx/ makefiles for QNX
-watcom/ makefiles for OpenWatcom
-win32/ makefiles for Windows
-
- zlib public header files (required for library use):
-zconf.h
-zlib.h
-
- private source files used to build the zlib library:
-adler32.c
-compress.c
-crc32.c
-crc32.h
-deflate.c
-deflate.h
-gzclose.c
-gzguts.h
-gzlib.c
-gzread.c
-gzwrite.c
-infback.c
-inffast.c
-inffast.h
-inffixed.h
-inflate.c
-inflate.h
-inftrees.c
-inftrees.h
-trees.c
-trees.h
-uncompr.c
-zutil.c
-zutil.h
-
- source files for sample programs
-See examples/README.examples
-
- unsupported contributions by third parties
-See contrib/README.contrib
+++ /dev/null
-all:
- -@echo "Please use ./configure first. Thank you."
-
-distclean:
- make -f Makefile.in distclean
+++ /dev/null
-# Makefile for zlib
-# Copyright (C) 1995-2013 Jean-loup Gailly, Mark Adler
-# For conditions of distribution and use, see copyright notice in zlib.h
-
-# To compile and test, type:
-# ./configure; make test
-# Normally configure builds both a static and a shared library.
-# If you want to build just a static library, use: ./configure --static
-
-# To use the asm code, type:
-# cp contrib/asm?86/match.S ./match.S
-# make LOC=-DASMV OBJA=match.o
-
-# To install /usr/local/lib/libz.* and /usr/local/include/zlib.h, type:
-# make install
-# To install in $HOME instead of /usr/local, use:
-# make install prefix=$HOME
-
-CC=cc
-
-CFLAGS=-O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-g -DDEBUG
-#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-# -Wstrict-prototypes -Wmissing-prototypes
-
-SFLAGS=-O
-LDFLAGS=
-TEST_LDFLAGS=-L. libz.a
-LDSHARED=$(CC)
-CPP=$(CC) -E
-
-STATICLIB=libz.a
-SHAREDLIB=libz.so
-SHAREDLIBV=libz.so.1.2.8
-SHAREDLIBM=libz.so.1
-LIBS=$(STATICLIB) $(SHAREDLIBV)
-
-AR=ar
-ARFLAGS=rc
-RANLIB=ranlib
-LDCONFIG=ldconfig
-LDSHAREDLIBC=-lc
-TAR=tar
-SHELL=/bin/sh
-EXE=
-
-prefix = /usr/local
-exec_prefix = ${prefix}
-libdir = ${exec_prefix}/lib
-sharedlibdir = ${libdir}
-includedir = ${prefix}/include
-mandir = ${prefix}/share/man
-man3dir = ${mandir}/man3
-pkgconfigdir = ${libdir}/pkgconfig
-
-OBJZ = adler32.o crc32.o deflate.o infback.o inffast.o inflate.o inftrees.o trees.o zutil.o
-OBJG = compress.o uncompr.o gzclose.o gzlib.o gzread.o gzwrite.o
-OBJC = $(OBJZ) $(OBJG)
-
-PIC_OBJZ = adler32.lo crc32.lo deflate.lo infback.lo inffast.lo inflate.lo inftrees.lo trees.lo zutil.lo
-PIC_OBJG = compress.lo uncompr.lo gzclose.lo gzlib.lo gzread.lo gzwrite.lo
-PIC_OBJC = $(PIC_OBJZ) $(PIC_OBJG)
-
-# to use the asm code: make OBJA=match.o, PIC_OBJA=match.lo
-OBJA =
-PIC_OBJA =
-
-OBJS = $(OBJC) $(OBJA)
-
-PIC_OBJS = $(PIC_OBJC) $(PIC_OBJA)
-
-all: static shared
-
-static: example$(EXE) minigzip$(EXE)
-
-shared: examplesh$(EXE) minigzipsh$(EXE)
-
-all64: example64$(EXE) minigzip64$(EXE)
-
-check: test
-
-test: all teststatic testshared
-
-teststatic: static
- @TMPST=tmpst_$$; \
- if echo hello world | ./minigzip | ./minigzip -d && ./example $$TMPST ; then \
- echo ' *** zlib test OK ***'; \
- else \
- echo ' *** zlib test FAILED ***'; false; \
- fi; \
- rm -f $$TMPST
-
-testshared: shared
- @LD_LIBRARY_PATH=`pwd`:$(LD_LIBRARY_PATH) ; export LD_LIBRARY_PATH; \
- LD_LIBRARYN32_PATH=`pwd`:$(LD_LIBRARYN32_PATH) ; export LD_LIBRARYN32_PATH; \
- DYLD_LIBRARY_PATH=`pwd`:$(DYLD_LIBRARY_PATH) ; export DYLD_LIBRARY_PATH; \
- SHLIB_PATH=`pwd`:$(SHLIB_PATH) ; export SHLIB_PATH; \
- TMPSH=tmpsh_$$; \
- if echo hello world | ./minigzipsh | ./minigzipsh -d && ./examplesh $$TMPSH; then \
- echo ' *** zlib shared test OK ***'; \
- else \
- echo ' *** zlib shared test FAILED ***'; false; \
- fi; \
- rm -f $$TMPSH
-
-test64: all64
- @TMP64=tmp64_$$; \
- if echo hello world | ./minigzip64 | ./minigzip64 -d && ./example64 $$TMP64; then \
- echo ' *** zlib 64-bit test OK ***'; \
- else \
- echo ' *** zlib 64-bit test FAILED ***'; false; \
- fi; \
- rm -f $$TMP64
-
-infcover.o: test/infcover.c zlib.h zconf.h
- $(CC) $(CFLAGS) -I. -c -o $@ test/infcover.c
-
-infcover: infcover.o libz.a
- $(CC) $(CFLAGS) -o $@ infcover.o libz.a
-
-cover: infcover
- rm -f *.gcda
- ./infcover
- gcov inf*.c
-
-libz.a: $(OBJS)
- $(AR) $(ARFLAGS) $@ $(OBJS)
- -@ ($(RANLIB) $@ || true) >/dev/null 2>&1
-
-match.o: match.S
- $(CPP) match.S > _match.s
- $(CC) -c _match.s
- mv _match.o match.o
- rm -f _match.s
-
-match.lo: match.S
- $(CPP) match.S > _match.s
- $(CC) -c -fPIC _match.s
- mv _match.o match.lo
- rm -f _match.s
-
-example.o: test/example.c zlib.h zconf.h
- $(CC) $(CFLAGS) -I. -c -o $@ test/example.c
-
-minigzip.o: test/minigzip.c zlib.h zconf.h
- $(CC) $(CFLAGS) -I. -c -o $@ test/minigzip.c
-
-example64.o: test/example.c zlib.h zconf.h
- $(CC) $(CFLAGS) -I. -D_FILE_OFFSET_BITS=64 -c -o $@ test/example.c
-
-minigzip64.o: test/minigzip.c zlib.h zconf.h
- $(CC) $(CFLAGS) -I. -D_FILE_OFFSET_BITS=64 -c -o $@ test/minigzip.c
-
-.SUFFIXES: .lo
-
-.c.lo:
- -@mkdir objs 2>/dev/null || test -d objs
- $(CC) $(SFLAGS) -DPIC -c -o objs/$*.o $<
- -@mv objs/$*.o $@
-
-placebo $(SHAREDLIBV): $(PIC_OBJS) libz.a
- $(LDSHARED) $(SFLAGS) -o $@ $(PIC_OBJS) $(LDSHAREDLIBC) $(LDFLAGS)
- rm -f $(SHAREDLIB) $(SHAREDLIBM)
- ln -s $@ $(SHAREDLIB)
- ln -s $@ $(SHAREDLIBM)
- -@rmdir objs
-
-example$(EXE): example.o $(STATICLIB)
- $(CC) $(CFLAGS) -o $@ example.o $(TEST_LDFLAGS)
-
-minigzip$(EXE): minigzip.o $(STATICLIB)
- $(CC) $(CFLAGS) -o $@ minigzip.o $(TEST_LDFLAGS)
-
-examplesh$(EXE): example.o $(SHAREDLIBV)
- $(CC) $(CFLAGS) -o $@ example.o -L. $(SHAREDLIBV)
-
-minigzipsh$(EXE): minigzip.o $(SHAREDLIBV)
- $(CC) $(CFLAGS) -o $@ minigzip.o -L. $(SHAREDLIBV)
-
-example64$(EXE): example64.o $(STATICLIB)
- $(CC) $(CFLAGS) -o $@ example64.o $(TEST_LDFLAGS)
-
-minigzip64$(EXE): minigzip64.o $(STATICLIB)
- $(CC) $(CFLAGS) -o $@ minigzip64.o $(TEST_LDFLAGS)
-
-install-libs: $(LIBS)
- -@if [ ! -d $(DESTDIR)$(exec_prefix) ]; then mkdir -p $(DESTDIR)$(exec_prefix); fi
- -@if [ ! -d $(DESTDIR)$(libdir) ]; then mkdir -p $(DESTDIR)$(libdir); fi
- -@if [ ! -d $(DESTDIR)$(sharedlibdir) ]; then mkdir -p $(DESTDIR)$(sharedlibdir); fi
- -@if [ ! -d $(DESTDIR)$(man3dir) ]; then mkdir -p $(DESTDIR)$(man3dir); fi
- -@if [ ! -d $(DESTDIR)$(pkgconfigdir) ]; then mkdir -p $(DESTDIR)$(pkgconfigdir); fi
- cp $(STATICLIB) $(DESTDIR)$(libdir)
- chmod 644 $(DESTDIR)$(libdir)/$(STATICLIB)
- -@($(RANLIB) $(DESTDIR)$(libdir)/libz.a || true) >/dev/null 2>&1
- -@if test -n "$(SHAREDLIBV)"; then \
- cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir); \
- echo "cp $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)"; \
- chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV); \
- echo "chmod 755 $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBV)"; \
- rm -f $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
- ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIB); \
- ln -s $(SHAREDLIBV) $(DESTDIR)$(sharedlibdir)/$(SHAREDLIBM); \
- ($(LDCONFIG) || true) >/dev/null 2>&1; \
- fi
- cp zlib.3 $(DESTDIR)$(man3dir)
- chmod 644 $(DESTDIR)$(man3dir)/zlib.3
- cp zlib.pc $(DESTDIR)$(pkgconfigdir)
- chmod 644 $(DESTDIR)$(pkgconfigdir)/zlib.pc
-# The ranlib in install is needed on NeXTSTEP which checks file times
-# ldconfig is for Linux
-
-install: install-libs
- -@if [ ! -d $(DESTDIR)$(includedir) ]; then mkdir -p $(DESTDIR)$(includedir); fi
- cp zlib.h zconf.h $(DESTDIR)$(includedir)
- chmod 644 $(DESTDIR)$(includedir)/zlib.h $(DESTDIR)$(includedir)/zconf.h
-
-uninstall:
- cd $(DESTDIR)$(includedir) && rm -f zlib.h zconf.h
- cd $(DESTDIR)$(libdir) && rm -f libz.a; \
- if test -n "$(SHAREDLIBV)" -a -f $(SHAREDLIBV); then \
- rm -f $(SHAREDLIBV) $(SHAREDLIB) $(SHAREDLIBM); \
- fi
- cd $(DESTDIR)$(man3dir) && rm -f zlib.3
- cd $(DESTDIR)$(pkgconfigdir) && rm -f zlib.pc
-
-docs: zlib.3.pdf
-
-zlib.3.pdf: zlib.3
- groff -mandoc -f H -T ps zlib.3 | ps2pdf - zlib.3.pdf
-
-zconf.h.cmakein: zconf.h.in
- -@ TEMPFILE=zconfh_$$; \
- echo "/#define ZCONF_H/ a\\\\\n#cmakedefine Z_PREFIX\\\\\n#cmakedefine Z_HAVE_UNISTD_H\n" >> $$TEMPFILE &&\
- sed -f $$TEMPFILE zconf.h.in > zconf.h.cmakein &&\
- touch -r zconf.h.in zconf.h.cmakein &&\
- rm $$TEMPFILE
-
-zconf: zconf.h.in
- cp -p zconf.h.in zconf.h
-
-mostlyclean: clean
-clean:
- rm -f *.o *.lo *~ \
- example$(EXE) minigzip$(EXE) examplesh$(EXE) minigzipsh$(EXE) \
- example64$(EXE) minigzip64$(EXE) \
- infcover \
- libz.* foo.gz so_locations \
- _match.s maketree contrib/infback9/*.o
- rm -rf objs
- rm -f *.gcda *.gcno *.gcov
- rm -f contrib/infback9/*.gcda contrib/infback9/*.gcno contrib/infback9/*.gcov
-
-maintainer-clean: distclean
-distclean: clean zconf zconf.h.cmakein docs
- rm -f Makefile zlib.pc configure.log
- -@rm -f .DS_Store
- -@printf 'all:\n\t-@echo "Please use ./configure first. Thank you."\n' > Makefile
- -@printf '\ndistclean:\n\tmake -f Makefile.in distclean\n' >> Makefile
- -@touch -r Makefile.in Makefile
-
-tags:
- etags *.[ch]
-
-depend:
- makedepend -- $(CFLAGS) -- *.[ch]
-
-# DO NOT DELETE THIS LINE -- make depend depends on it.
-
-adler32.o zutil.o: zutil.h zlib.h zconf.h
-gzclose.o gzlib.o gzread.o gzwrite.o: zlib.h zconf.h gzguts.h
-compress.o example.o minigzip.o uncompr.o: zlib.h zconf.h
-crc32.o: zutil.h zlib.h zconf.h crc32.h
-deflate.o: deflate.h zutil.h zlib.h zconf.h
-infback.o inflate.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h inffixed.h
-inffast.o: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.o: zutil.h zlib.h zconf.h inftrees.h
-trees.o: deflate.h zutil.h zlib.h zconf.h trees.h
-
-adler32.lo zutil.lo: zutil.h zlib.h zconf.h
-gzclose.lo gzlib.lo gzread.lo gzwrite.lo: zlib.h zconf.h gzguts.h
-compress.lo example.lo minigzip.lo uncompr.lo: zlib.h zconf.h
-crc32.lo: zutil.h zlib.h zconf.h crc32.h
-deflate.lo: deflate.h zutil.h zlib.h zconf.h
-infback.lo inflate.lo: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h inffixed.h
-inffast.lo: zutil.h zlib.h zconf.h inftrees.h inflate.h inffast.h
-inftrees.lo: zutil.h zlib.h zconf.h inftrees.h
-trees.lo: deflate.h zutil.h zlib.h zconf.h trees.h
+++ /dev/null
-ZLIB DATA COMPRESSION LIBRARY
-
-zlib 1.2.8 is a general purpose data compression library. All the code is
-thread safe. The data format used by the zlib library is described by RFCs
-(Request for Comments) 1950 to 1952 in the files
-http://tools.ietf.org/html/rfc1950 (zlib format), rfc1951 (deflate format) and
-rfc1952 (gzip format).
-
-All functions of the compression library are documented in the file zlib.h
-(volunteer to write man pages welcome, contact zlib@gzip.org). A usage example
-of the library is given in the file test/example.c which also tests that
-the library is working correctly. Another example is given in the file
-test/minigzip.c. The compression library itself is composed of all source
-files in the root directory.
-
-To compile all files and run the test program, follow the instructions given at
-the top of Makefile.in. In short "./configure; make test", and if that goes
-well, "make install" should work for most flavors of Unix. For Windows, use
-one of the special makefiles in win32/ or contrib/vstudio/ . For VMS, use
-make_vms.com.
-
-Questions about zlib should be sent to <zlib@gzip.org>, or to Gilles Vollant
-<info@winimage.com> for the Windows DLL version. The zlib home page is
-http://zlib.net/ . Before reporting a problem, please check this site to
-verify that you have the latest version of zlib; otherwise get the latest
-version and check whether the problem still exists or not.
-
-PLEASE read the zlib FAQ http://zlib.net/zlib_faq.html before asking for help.
-
-Mark Nelson <markn@ieee.org> wrote an article about zlib for the Jan. 1997
-issue of Dr. Dobb's Journal; a copy of the article is available at
-http://marknelson.us/1997/01/01/zlib-engine/ .
-
-The changes made in version 1.2.8 are documented in the file ChangeLog.
-
-Unsupported third party contributions are provided in directory contrib/ .
-
-zlib is available in Java using the java.util.zip package, documented at
-http://java.sun.com/developer/technicalArticles/Programming/compression/ .
-
-A Perl interface to zlib written by Paul Marquess <pmqs@cpan.org> is available
-at CPAN (Comprehensive Perl Archive Network) sites, including
-http://search.cpan.org/~pmqs/IO-Compress-Zlib/ .
-
-A Python interface to zlib written by A.M. Kuchling <amk@amk.ca> is
-available in Python 1.5 and later versions, see
-http://docs.python.org/library/zlib.html .
-
-zlib is built into tcl: http://wiki.tcl.tk/4610 .
-
-An experimental package to read and write files in .zip format, written on top
-of zlib by Gilles Vollant <info@winimage.com>, is available in the
-contrib/minizip directory of zlib.
-
-
-Notes for some targets:
-
-- For Windows DLL versions, please see win32/DLL_FAQ.txt
-
-- For 64-bit Irix, deflate.c must be compiled without any optimization. With
- -O, one libpng test fails. The test works in 32 bit mode (with the -n32
- compiler flag). The compiler bug has been reported to SGI.
-
-- zlib doesn't work with gcc 2.6.3 on a DEC 3000/300LX under OSF/1 2.1 it works
- when compiled with cc.
-
-- On Digital Unix 4.0D (formely OSF/1) on AlphaServer, the cc option -std1 is
- necessary to get gzprintf working correctly. This is done by configure.
-
-- zlib doesn't work on HP-UX 9.05 with some versions of /bin/cc. It works with
- other compilers. Use "make test" to check your compiler.
-
-- gzdopen is not supported on RISCOS or BEOS.
-
-- For PalmOs, see http://palmzlib.sourceforge.net/
-
-
-Acknowledgments:
-
- The deflate format used by zlib was defined by Phil Katz. The deflate and
- zlib specifications were written by L. Peter Deutsch. Thanks to all the
- people who reported problems and suggested various improvements in zlib; they
- are too numerous to cite here.
-
-Copyright notice:
-
- (C) 1995-2013 Jean-loup Gailly and Mark Adler
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Jean-loup Gailly Mark Adler
- jloup@gzip.org madler@alumni.caltech.edu
-
-If you use the zlib library in a product, we would appreciate *not* receiving
-lengthy legal documents to sign. The sources are provided for free but without
-warranty of any kind. The library has been entirely written by Jean-loup
-Gailly and Mark Adler; it does not include third-party code.
-
-If you redistribute modified sources, we would appreciate that you include in
-the file ChangeLog history information documenting your changes. Please read
-the FAQ for more information on the distribution of modified source versions.
+++ /dev/null
-/* adler32.c -- compute the Adler-32 checksum of a data stream
- * Copyright (C) 1995-2011 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-
-#define local static
-
-local uLong adler32_combine_ OF((uLong adler1, uLong adler2, z_off64_t len2));
-
-#define BASE 65521 /* largest prime smaller than 65536 */
-#define NMAX 5552
-/* NMAX is the largest n such that 255n(n+1)/2 + (n+1)(BASE-1) <= 2^32-1 */
-
-#define DO1(buf,i) {adler += (buf)[i]; sum2 += adler;}
-#define DO2(buf,i) DO1(buf,i); DO1(buf,i+1);
-#define DO4(buf,i) DO2(buf,i); DO2(buf,i+2);
-#define DO8(buf,i) DO4(buf,i); DO4(buf,i+4);
-#define DO16(buf) DO8(buf,0); DO8(buf,8);
-
-/* use NO_DIVIDE if your processor does not do division in hardware --
- try it both ways to see which is faster */
-#ifdef NO_DIVIDE
-/* note that this assumes BASE is 65521, where 65536 % 65521 == 15
- (thank you to John Reiser for pointing this out) */
-# define CHOP(a) \
- do { \
- unsigned long tmp = a >> 16; \
- a &= 0xffffUL; \
- a += (tmp << 4) - tmp; \
- } while (0)
-# define MOD28(a) \
- do { \
- CHOP(a); \
- if (a >= BASE) a -= BASE; \
- } while (0)
-# define MOD(a) \
- do { \
- CHOP(a); \
- MOD28(a); \
- } while (0)
-# define MOD63(a) \
- do { /* this assumes a is not negative */ \
- z_off64_t tmp = a >> 32; \
- a &= 0xffffffffL; \
- a += (tmp << 8) - (tmp << 5) + tmp; \
- tmp = a >> 16; \
- a &= 0xffffL; \
- a += (tmp << 4) - tmp; \
- tmp = a >> 16; \
- a &= 0xffffL; \
- a += (tmp << 4) - tmp; \
- if (a >= BASE) a -= BASE; \
- } while (0)
-#else
-# define MOD(a) a %= BASE
-# define MOD28(a) a %= BASE
-# define MOD63(a) a %= BASE
-#endif
-
-/* ========================================================================= */
-uLong ZEXPORT adler32(adler, buf, len)
- uLong adler;
- const Bytef *buf;
- uInt len;
-{
- unsigned long sum2;
- unsigned n;
-
- /* split Adler-32 into component sums */
- sum2 = (adler >> 16) & 0xffff;
- adler &= 0xffff;
-
- /* in case user likes doing a byte at a time, keep it fast */
- if (len == 1) {
- adler += buf[0];
- if (adler >= BASE)
- adler -= BASE;
- sum2 += adler;
- if (sum2 >= BASE)
- sum2 -= BASE;
- return adler | (sum2 << 16);
- }
-
- /* initial Adler-32 value (deferred check for len == 1 speed) */
- if (buf == Z_NULL)
- return 1L;
-
- /* in case short lengths are provided, keep it somewhat fast */
- if (len < 16) {
- while (len--) {
- adler += *buf++;
- sum2 += adler;
- }
- if (adler >= BASE)
- adler -= BASE;
- MOD28(sum2); /* only added so many BASE's */
- return adler | (sum2 << 16);
- }
-
- /* do length NMAX blocks -- requires just one modulo operation */
- while (len >= NMAX) {
- len -= NMAX;
- n = NMAX / 16; /* NMAX is divisible by 16 */
- do {
- DO16(buf); /* 16 sums unrolled */
- buf += 16;
- } while (--n);
- MOD(adler);
- MOD(sum2);
- }
-
- /* do remaining bytes (less than NMAX, still just one modulo) */
- if (len) { /* avoid modulos if none remaining */
- while (len >= 16) {
- len -= 16;
- DO16(buf);
- buf += 16;
- }
- while (len--) {
- adler += *buf++;
- sum2 += adler;
- }
- MOD(adler);
- MOD(sum2);
- }
-
- /* return recombined sums */
- return adler | (sum2 << 16);
-}
-
-/* ========================================================================= */
-local uLong adler32_combine_(adler1, adler2, len2)
- uLong adler1;
- uLong adler2;
- z_off64_t len2;
-{
- unsigned long sum1;
- unsigned long sum2;
- unsigned rem;
-
- /* for negative len, return invalid adler32 as a clue for debugging */
- if (len2 < 0)
- return 0xffffffffUL;
-
- /* the derivation of this formula is left as an exercise for the reader */
- MOD63(len2); /* assumes len2 >= 0 */
- rem = (unsigned)len2;
- sum1 = adler1 & 0xffff;
- sum2 = rem * sum1;
- MOD(sum2);
- sum1 += (adler2 & 0xffff) + BASE - 1;
- sum2 += ((adler1 >> 16) & 0xffff) + ((adler2 >> 16) & 0xffff) + BASE - rem;
- if (sum1 >= BASE) sum1 -= BASE;
- if (sum1 >= BASE) sum1 -= BASE;
- if (sum2 >= (BASE << 1)) sum2 -= (BASE << 1);
- if (sum2 >= BASE) sum2 -= BASE;
- return sum1 | (sum2 << 16);
-}
-
-/* ========================================================================= */
-uLong ZEXPORT adler32_combine(adler1, adler2, len2)
- uLong adler1;
- uLong adler2;
- z_off_t len2;
-{
- return adler32_combine_(adler1, adler2, len2);
-}
-
-uLong ZEXPORT adler32_combine64(adler1, adler2, len2)
- uLong adler1;
- uLong adler2;
- z_off64_t len2;
-{
- return adler32_combine_(adler1, adler2, len2);
-}
+++ /dev/null
-/* compress.c -- compress a memory buffer
- * Copyright (C) 1995-2005 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#define ZLIB_INTERNAL
-#include "zlib.h"
-
-/* ===========================================================================
- Compresses the source buffer into the destination buffer. The level
- parameter has the same meaning as in deflateInit. sourceLen is the byte
- length of the source buffer. Upon entry, destLen is the total size of the
- destination buffer, which must be at least 0.1% larger than sourceLen plus
- 12 bytes. Upon exit, destLen is the actual size of the compressed buffer.
-
- compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_BUF_ERROR if there was not enough room in the output buffer,
- Z_STREAM_ERROR if the level parameter is invalid.
-*/
-int ZEXPORT compress2 (dest, destLen, source, sourceLen, level)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
- int level;
-{
- z_stream stream;
- int err;
-
- stream.next_in = (z_const Bytef *)source;
- stream.avail_in = (uInt)sourceLen;
-#ifdef MAXSEG_64K
- /* Check for source > 64K on 16-bit machine: */
- if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
-#endif
- stream.next_out = dest;
- stream.avail_out = (uInt)*destLen;
- if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
-
- stream.zalloc = (alloc_func)0;
- stream.zfree = (free_func)0;
- stream.opaque = (voidpf)0;
-
- err = deflateInit(&stream, level);
- if (err != Z_OK) return err;
-
- err = deflate(&stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- deflateEnd(&stream);
- return err == Z_OK ? Z_BUF_ERROR : err;
- }
- *destLen = stream.total_out;
-
- err = deflateEnd(&stream);
- return err;
-}
-
-/* ===========================================================================
- */
-int ZEXPORT compress (dest, destLen, source, sourceLen)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
-{
- return compress2(dest, destLen, source, sourceLen, Z_DEFAULT_COMPRESSION);
-}
-
-/* ===========================================================================
- If the default memLevel or windowBits for deflateInit() is changed, then
- this function needs to be updated.
- */
-uLong ZEXPORT compressBound (sourceLen)
- uLong sourceLen;
-{
- return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
- (sourceLen >> 25) + 13;
-}
+++ /dev/null
-#!/bin/sh
-# configure script for zlib.
-#
-# Normally configure builds both a static and a shared library.
-# If you want to build just a static library, use: ./configure --static
-#
-# To impose specific compiler or flags or install directory, use for example:
-# prefix=$HOME CC=cc CFLAGS="-O4" ./configure
-# or for csh/tcsh users:
-# (setenv prefix $HOME; setenv CC cc; setenv CFLAGS "-O4"; ./configure)
-
-# Incorrect settings of CC or CFLAGS may prevent creating a shared library.
-# If you have problems, try without defining CC and CFLAGS before reporting
-# an error.
-
-# start off configure.log
-echo -------------------- >> configure.log
-echo $0 $* >> configure.log
-date >> configure.log
-
-# set command prefix for cross-compilation
-if [ -n "${CHOST}" ]; then
- uname="`echo "${CHOST}" | sed -e 's/^[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)$/\1/' -e 's/^[^-]*-[^-]*-\([^-]*\)-.*$/\1/'`"
- CROSS_PREFIX="${CHOST}-"
-fi
-
-# destination name for static library
-STATICLIB=libz.a
-
-# extract zlib version numbers from zlib.h
-VER=`sed -n -e '/VERSION "/s/.*"\(.*\)".*/\1/p' < zlib.h`
-VER3=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\\.[0-9]*\).*/\1/p' < zlib.h`
-VER2=`sed -n -e '/VERSION "/s/.*"\([0-9]*\\.[0-9]*\)\\..*/\1/p' < zlib.h`
-VER1=`sed -n -e '/VERSION "/s/.*"\([0-9]*\)\\..*/\1/p' < zlib.h`
-
-# establish commands for library building
-if "${CROSS_PREFIX}ar" --version >/dev/null 2>/dev/null || test $? -lt 126; then
- AR=${AR-"${CROSS_PREFIX}ar"}
- test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
-else
- AR=${AR-"ar"}
- test -n "${CROSS_PREFIX}" && echo Using ${AR} | tee -a configure.log
-fi
-ARFLAGS=${ARFLAGS-"rc"}
-if "${CROSS_PREFIX}ranlib" --version >/dev/null 2>/dev/null || test $? -lt 126; then
- RANLIB=${RANLIB-"${CROSS_PREFIX}ranlib"}
- test -n "${CROSS_PREFIX}" && echo Using ${RANLIB} | tee -a configure.log
-else
- RANLIB=${RANLIB-"ranlib"}
-fi
-if "${CROSS_PREFIX}nm" --version >/dev/null 2>/dev/null || test $? -lt 126; then
- NM=${NM-"${CROSS_PREFIX}nm"}
- test -n "${CROSS_PREFIX}" && echo Using ${NM} | tee -a configure.log
-else
- NM=${NM-"nm"}
-fi
-
-# set defaults before processing command line options
-LDCONFIG=${LDCONFIG-"ldconfig"}
-LDSHAREDLIBC="${LDSHAREDLIBC--lc}"
-ARCHS=
-prefix=${prefix-/usr/local}
-exec_prefix=${exec_prefix-'${prefix}'}
-libdir=${libdir-'${exec_prefix}/lib'}
-sharedlibdir=${sharedlibdir-'${libdir}'}
-includedir=${includedir-'${prefix}/include'}
-mandir=${mandir-'${prefix}/share/man'}
-shared_ext='.so'
-shared=1
-solo=0
-cover=0
-zprefix=0
-zconst=0
-build64=0
-gcc=0
-old_cc="$CC"
-old_cflags="$CFLAGS"
-OBJC='$(OBJZ) $(OBJG)'
-PIC_OBJC='$(PIC_OBJZ) $(PIC_OBJG)'
-
-# leave this script, optionally in a bad way
-leave()
-{
- if test "$*" != "0"; then
- echo "** $0 aborting." | tee -a configure.log
- fi
- rm -f $test.[co] $test $test$shared_ext $test.gcno ./--version
- echo -------------------- >> configure.log
- echo >> configure.log
- echo >> configure.log
- exit $1
-}
-
-# process command line options
-while test $# -ge 1
-do
-case "$1" in
- -h* | --help)
- echo 'usage:' | tee -a configure.log
- echo ' configure [--const] [--zprefix] [--prefix=PREFIX] [--eprefix=EXPREFIX]' | tee -a configure.log
- echo ' [--static] [--64] [--libdir=LIBDIR] [--sharedlibdir=LIBDIR]' | tee -a configure.log
- echo ' [--includedir=INCLUDEDIR] [--archs="-arch i386 -arch x86_64"]' | tee -a configure.log
- exit 0 ;;
- -p*=* | --prefix=*) prefix=`echo $1 | sed 's/.*=//'`; shift ;;
- -e*=* | --eprefix=*) exec_prefix=`echo $1 | sed 's/.*=//'`; shift ;;
- -l*=* | --libdir=*) libdir=`echo $1 | sed 's/.*=//'`; shift ;;
- --sharedlibdir=*) sharedlibdir=`echo $1 | sed 's/.*=//'`; shift ;;
- -i*=* | --includedir=*) includedir=`echo $1 | sed 's/.*=//'`;shift ;;
- -u*=* | --uname=*) uname=`echo $1 | sed 's/.*=//'`;shift ;;
- -p* | --prefix) prefix="$2"; shift; shift ;;
- -e* | --eprefix) exec_prefix="$2"; shift; shift ;;
- -l* | --libdir) libdir="$2"; shift; shift ;;
- -i* | --includedir) includedir="$2"; shift; shift ;;
- -s* | --shared | --enable-shared) shared=1; shift ;;
- -t | --static) shared=0; shift ;;
- --solo) solo=1; shift ;;
- --cover) cover=1; shift ;;
- -z* | --zprefix) zprefix=1; shift ;;
- -6* | --64) build64=1; shift ;;
- -a*=* | --archs=*) ARCHS=`echo $1 | sed 's/.*=//'`; shift ;;
- --sysconfdir=*) echo "ignored option: --sysconfdir" | tee -a configure.log; shift ;;
- --localstatedir=*) echo "ignored option: --localstatedir" | tee -a configure.log; shift ;;
- -c* | --const) zconst=1; shift ;;
- *)
- echo "unknown option: $1" | tee -a configure.log
- echo "$0 --help for help" | tee -a configure.log
- leave 1;;
- esac
-done
-
-# temporary file name
-test=ztest$$
-
-# put arguments in log, also put test file in log if used in arguments
-show()
-{
- case "$*" in
- *$test.c*)
- echo === $test.c === >> configure.log
- cat $test.c >> configure.log
- echo === >> configure.log;;
- esac
- echo $* >> configure.log
-}
-
-# check for gcc vs. cc and set compile and link flags based on the system identified by uname
-cat > $test.c <<EOF
-extern int getchar();
-int hello() {return getchar();}
-EOF
-
-test -z "$CC" && echo Checking for ${CROSS_PREFIX}gcc... | tee -a configure.log
-cc=${CC-${CROSS_PREFIX}gcc}
-cflags=${CFLAGS-"-O3"}
-# to force the asm version use: CFLAGS="-O3 -DASMV" ./configure
-case "$cc" in
- *gcc*) gcc=1 ;;
- *clang*) gcc=1 ;;
-esac
-case `$cc -v 2>&1` in
- *gcc*) gcc=1 ;;
-esac
-
-show $cc -c $test.c
-if test "$gcc" -eq 1 && ($cc -c $test.c) >> configure.log 2>&1; then
- echo ... using gcc >> configure.log
- CC="$cc"
- CFLAGS="${CFLAGS--O3} ${ARCHS}"
- SFLAGS="${CFLAGS--O3} -fPIC"
- LDFLAGS="${LDFLAGS} ${ARCHS}"
- if test $build64 -eq 1; then
- CFLAGS="${CFLAGS} -m64"
- SFLAGS="${SFLAGS} -m64"
- fi
- if test "${ZLIBGCCWARN}" = "YES"; then
- if test "$zconst" -eq 1; then
- CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -pedantic -DZLIB_CONST"
- else
- CFLAGS="${CFLAGS} -Wall -Wextra -pedantic"
- fi
- fi
- if test -z "$uname"; then
- uname=`(uname -s || echo unknown) 2>/dev/null`
- fi
- case "$uname" in
- Linux* | linux* | GNU | GNU/* | solaris*)
- LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"} ;;
- *BSD | *bsd* | DragonFly)
- LDSHARED=${LDSHARED-"$cc -shared -Wl,-soname,libz.so.1,--version-script,zlib.map"}
- LDCONFIG="ldconfig -m" ;;
- CYGWIN* | Cygwin* | cygwin* | OS/2*)
- EXE='.exe' ;;
- MINGW* | mingw*)
-# temporary bypass
- rm -f $test.[co] $test $test$shared_ext
- echo "Please use win32/Makefile.gcc instead." | tee -a configure.log
- leave 1
- LDSHARED=${LDSHARED-"$cc -shared"}
- LDSHAREDLIBC=""
- EXE='.exe' ;;
- QNX*) # This is for QNX6. I suppose that the QNX rule below is for QNX2,QNX4
- # (alain.bonnefoy@icbt.com)
- LDSHARED=${LDSHARED-"$cc -shared -Wl,-hlibz.so.1"} ;;
- HP-UX*)
- LDSHARED=${LDSHARED-"$cc -shared $SFLAGS"}
- case `(uname -m || echo unknown) 2>/dev/null` in
- ia64)
- shared_ext='.so'
- SHAREDLIB='libz.so' ;;
- *)
- shared_ext='.sl'
- SHAREDLIB='libz.sl' ;;
- esac ;;
- Darwin* | darwin*)
- shared_ext='.dylib'
- SHAREDLIB=libz$shared_ext
- SHAREDLIBV=libz.$VER$shared_ext
- SHAREDLIBM=libz.$VER1$shared_ext
- LDSHARED=${LDSHARED-"$cc -dynamiclib -install_name $libdir/$SHAREDLIBM -compatibility_version $VER1 -current_version $VER3"}
- if libtool -V 2>&1 | grep Apple > /dev/null; then
- AR="libtool"
- else
- AR="/usr/bin/libtool"
- fi
- ARFLAGS="-o" ;;
- *) LDSHARED=${LDSHARED-"$cc -shared"} ;;
- esac
-else
- # find system name and corresponding cc options
- CC=${CC-cc}
- gcc=0
- echo ... using $CC >> configure.log
- if test -z "$uname"; then
- uname=`(uname -sr || echo unknown) 2>/dev/null`
- fi
- case "$uname" in
- HP-UX*) SFLAGS=${CFLAGS-"-O +z"}
- CFLAGS=${CFLAGS-"-O"}
-# LDSHARED=${LDSHARED-"ld -b +vnocompatwarnings"}
- LDSHARED=${LDSHARED-"ld -b"}
- case `(uname -m || echo unknown) 2>/dev/null` in
- ia64)
- shared_ext='.so'
- SHAREDLIB='libz.so' ;;
- *)
- shared_ext='.sl'
- SHAREDLIB='libz.sl' ;;
- esac ;;
- IRIX*) SFLAGS=${CFLAGS-"-ansi -O2 -rpath ."}
- CFLAGS=${CFLAGS-"-ansi -O2"}
- LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
- OSF1\ V4*) SFLAGS=${CFLAGS-"-O -std1"}
- CFLAGS=${CFLAGS-"-O -std1"}
- LDFLAGS="${LDFLAGS} -Wl,-rpath,."
- LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so -Wl,-msym -Wl,-rpath,$(libdir) -Wl,-set_version,${VER}:1.0"} ;;
- OSF1*) SFLAGS=${CFLAGS-"-O -std1"}
- CFLAGS=${CFLAGS-"-O -std1"}
- LDSHARED=${LDSHARED-"cc -shared -Wl,-soname,libz.so.1"} ;;
- QNX*) SFLAGS=${CFLAGS-"-4 -O"}
- CFLAGS=${CFLAGS-"-4 -O"}
- LDSHARED=${LDSHARED-"cc"}
- RANLIB=${RANLIB-"true"}
- AR="cc"
- ARFLAGS="-A" ;;
- SCO_SV\ 3.2*) SFLAGS=${CFLAGS-"-O3 -dy -KPIC "}
- CFLAGS=${CFLAGS-"-O3"}
- LDSHARED=${LDSHARED-"cc -dy -KPIC -G"} ;;
- SunOS\ 5* | solaris*)
- LDSHARED=${LDSHARED-"cc -G -h libz$shared_ext.$VER1"}
- SFLAGS=${CFLAGS-"-fast -KPIC"}
- CFLAGS=${CFLAGS-"-fast"}
- if test $build64 -eq 1; then
- # old versions of SunPRO/Workshop/Studio don't support -m64,
- # but newer ones do. Check for it.
- flag64=`$CC -flags | egrep -- '^-m64'`
- if test x"$flag64" != x"" ; then
- CFLAGS="${CFLAGS} -m64"
- SFLAGS="${SFLAGS} -m64"
- else
- case `(uname -m || echo unknown) 2>/dev/null` in
- i86*)
- SFLAGS="$SFLAGS -xarch=amd64"
- CFLAGS="$CFLAGS -xarch=amd64" ;;
- *)
- SFLAGS="$SFLAGS -xarch=v9"
- CFLAGS="$CFLAGS -xarch=v9" ;;
- esac
- fi
- fi
- ;;
- SunOS\ 4*) SFLAGS=${CFLAGS-"-O2 -PIC"}
- CFLAGS=${CFLAGS-"-O2"}
- LDSHARED=${LDSHARED-"ld"} ;;
- SunStudio\ 9*) SFLAGS=${CFLAGS-"-fast -xcode=pic32 -xtarget=ultra3 -xarch=v9b"}
- CFLAGS=${CFLAGS-"-fast -xtarget=ultra3 -xarch=v9b"}
- LDSHARED=${LDSHARED-"cc -xarch=v9b"} ;;
- UNIX_System_V\ 4.2.0)
- SFLAGS=${CFLAGS-"-KPIC -O"}
- CFLAGS=${CFLAGS-"-O"}
- LDSHARED=${LDSHARED-"cc -G"} ;;
- UNIX_SV\ 4.2MP)
- SFLAGS=${CFLAGS-"-Kconform_pic -O"}
- CFLAGS=${CFLAGS-"-O"}
- LDSHARED=${LDSHARED-"cc -G"} ;;
- OpenUNIX\ 5)
- SFLAGS=${CFLAGS-"-KPIC -O"}
- CFLAGS=${CFLAGS-"-O"}
- LDSHARED=${LDSHARED-"cc -G"} ;;
- AIX*) # Courtesy of dbakker@arrayasolutions.com
- SFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
- CFLAGS=${CFLAGS-"-O -qmaxmem=8192"}
- LDSHARED=${LDSHARED-"xlc -G"} ;;
- # send working options for other systems to zlib@gzip.org
- *) SFLAGS=${CFLAGS-"-O"}
- CFLAGS=${CFLAGS-"-O"}
- LDSHARED=${LDSHARED-"cc -shared"} ;;
- esac
-fi
-
-# destination names for shared library if not defined above
-SHAREDLIB=${SHAREDLIB-"libz$shared_ext"}
-SHAREDLIBV=${SHAREDLIBV-"libz$shared_ext.$VER"}
-SHAREDLIBM=${SHAREDLIBM-"libz$shared_ext.$VER1"}
-
-echo >> configure.log
-
-# define functions for testing compiler and library characteristics and logging the results
-
-cat > $test.c <<EOF
-#error error
-EOF
-if ($CC -c $CFLAGS $test.c) 2>/dev/null; then
- try()
- {
- show $*
- test "`( $* ) 2>&1 | tee -a configure.log`" = ""
- }
- echo - using any output from compiler to indicate an error >> configure.log
-else
-try()
-{
- show $*
- ( $* ) >> configure.log 2>&1
- ret=$?
- if test $ret -ne 0; then
- echo "(exit code "$ret")" >> configure.log
- fi
- return $ret
-}
-fi
-
-tryboth()
-{
- show $*
- got=`( $* ) 2>&1`
- ret=$?
- printf %s "$got" >> configure.log
- if test $ret -ne 0; then
- return $ret
- fi
- test "$got" = ""
-}
-
-cat > $test.c << EOF
-int foo() { return 0; }
-EOF
-echo "Checking for obsessive-compulsive compiler options..." >> configure.log
-if try $CC -c $CFLAGS $test.c; then
- :
-else
- echo "Compiler error reporting is too harsh for $0 (perhaps remove -Werror)." | tee -a configure.log
- leave 1
-fi
-
-echo >> configure.log
-
-# see if shared library build supported
-cat > $test.c <<EOF
-extern int getchar();
-int hello() {return getchar();}
-EOF
-if test $shared -eq 1; then
- echo Checking for shared library support... | tee -a configure.log
- # we must test in two steps (cc then ld), required at least on SunOS 4.x
- if try $CC -w -c $SFLAGS $test.c &&
- try $LDSHARED $SFLAGS -o $test$shared_ext $test.o; then
- echo Building shared library $SHAREDLIBV with $CC. | tee -a configure.log
- elif test -z "$old_cc" -a -z "$old_cflags"; then
- echo No shared library support. | tee -a configure.log
- shared=0;
- else
- echo 'No shared library support; try without defining CC and CFLAGS' | tee -a configure.log
- shared=0;
- fi
-fi
-if test $shared -eq 0; then
- LDSHARED="$CC"
- ALL="static"
- TEST="all teststatic"
- SHAREDLIB=""
- SHAREDLIBV=""
- SHAREDLIBM=""
- echo Building static library $STATICLIB version $VER with $CC. | tee -a configure.log
-else
- ALL="static shared"
- TEST="all teststatic testshared"
-fi
-
-# check for underscores in external names for use by assembler code
-CPP=${CPP-"$CC -E"}
-case $CFLAGS in
- *ASMV*)
- echo >> configure.log
- show "$NM $test.o | grep _hello"
- if test "`$NM $test.o | grep _hello | tee -a configure.log`" = ""; then
- CPP="$CPP -DNO_UNDERLINE"
- echo Checking for underline in external names... No. | tee -a configure.log
- else
- echo Checking for underline in external names... Yes. | tee -a configure.log
- fi ;;
-esac
-
-echo >> configure.log
-
-# check for large file support, and if none, check for fseeko()
-cat > $test.c <<EOF
-#include <sys/types.h>
-off64_t dummy = 0;
-EOF
-if try $CC -c $CFLAGS -D_LARGEFILE64_SOURCE=1 $test.c; then
- CFLAGS="${CFLAGS} -D_LARGEFILE64_SOURCE=1"
- SFLAGS="${SFLAGS} -D_LARGEFILE64_SOURCE=1"
- ALL="${ALL} all64"
- TEST="${TEST} test64"
- echo "Checking for off64_t... Yes." | tee -a configure.log
- echo "Checking for fseeko... Yes." | tee -a configure.log
-else
- echo "Checking for off64_t... No." | tee -a configure.log
- echo >> configure.log
- cat > $test.c <<EOF
-#include <stdio.h>
-int main(void) {
- fseeko(NULL, 0, 0);
- return 0;
-}
-EOF
- if try $CC $CFLAGS -o $test $test.c; then
- echo "Checking for fseeko... Yes." | tee -a configure.log
- else
- CFLAGS="${CFLAGS} -DNO_FSEEKO"
- SFLAGS="${SFLAGS} -DNO_FSEEKO"
- echo "Checking for fseeko... No." | tee -a configure.log
- fi
-fi
-
-echo >> configure.log
-
-# check for strerror() for use by gz* functions
-cat > $test.c <<EOF
-#include <string.h>
-#include <errno.h>
-int main() { return strlen(strerror(errno)); }
-EOF
-if try $CC $CFLAGS -o $test $test.c; then
- echo "Checking for strerror... Yes." | tee -a configure.log
-else
- CFLAGS="${CFLAGS} -DNO_STRERROR"
- SFLAGS="${SFLAGS} -DNO_STRERROR"
- echo "Checking for strerror... No." | tee -a configure.log
-fi
-
-# copy clean zconf.h for subsequent edits
-cp -p zconf.h.in zconf.h
-
-echo >> configure.log
-
-# check for unistd.h and save result in zconf.h
-cat > $test.c <<EOF
-#include <unistd.h>
-int main() { return 0; }
-EOF
-if try $CC -c $CFLAGS $test.c; then
- sed < zconf.h "/^#ifdef HAVE_UNISTD_H.* may be/s/def HAVE_UNISTD_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
- mv zconf.temp.h zconf.h
- echo "Checking for unistd.h... Yes." | tee -a configure.log
-else
- echo "Checking for unistd.h... No." | tee -a configure.log
-fi
-
-echo >> configure.log
-
-# check for stdarg.h and save result in zconf.h
-cat > $test.c <<EOF
-#include <stdarg.h>
-int main() { return 0; }
-EOF
-if try $CC -c $CFLAGS $test.c; then
- sed < zconf.h "/^#ifdef HAVE_STDARG_H.* may be/s/def HAVE_STDARG_H\(.*\) may be/ 1\1 was/" > zconf.temp.h
- mv zconf.temp.h zconf.h
- echo "Checking for stdarg.h... Yes." | tee -a configure.log
-else
- echo "Checking for stdarg.h... No." | tee -a configure.log
-fi
-
-# if the z_ prefix was requested, save that in zconf.h
-if test $zprefix -eq 1; then
- sed < zconf.h "/#ifdef Z_PREFIX.* may be/s/def Z_PREFIX\(.*\) may be/ 1\1 was/" > zconf.temp.h
- mv zconf.temp.h zconf.h
- echo >> configure.log
- echo "Using z_ prefix on all symbols." | tee -a configure.log
-fi
-
-# if --solo compilation was requested, save that in zconf.h and remove gz stuff from object lists
-if test $solo -eq 1; then
- sed '/#define ZCONF_H/a\
-#define Z_SOLO
-
-' < zconf.h > zconf.temp.h
- mv zconf.temp.h zconf.h
-OBJC='$(OBJZ)'
-PIC_OBJC='$(PIC_OBJZ)'
-fi
-
-# if code coverage testing was requested, use older gcc if defined, e.g. "gcc-4.2" on Mac OS X
-if test $cover -eq 1; then
- CFLAGS="${CFLAGS} -fprofile-arcs -ftest-coverage"
- if test -n "$GCC_CLASSIC"; then
- CC=$GCC_CLASSIC
- fi
-fi
-
-echo >> configure.log
-
-# conduct a series of tests to resolve eight possible cases of using "vs" or "s" printf functions
-# (using stdarg or not), with or without "n" (proving size of buffer), and with or without a
-# return value. The most secure result is vsnprintf() with a return value. snprintf() with a
-# return value is secure as well, but then gzprintf() will be limited to 20 arguments.
-cat > $test.c <<EOF
-#include <stdio.h>
-#include <stdarg.h>
-#include "zconf.h"
-int main()
-{
-#ifndef STDC
- choke me
-#endif
- return 0;
-}
-EOF
-if try $CC -c $CFLAGS $test.c; then
- echo "Checking whether to use vs[n]printf() or s[n]printf()... using vs[n]printf()." | tee -a configure.log
-
- echo >> configure.log
- cat > $test.c <<EOF
-#include <stdio.h>
-#include <stdarg.h>
-int mytest(const char *fmt, ...)
-{
- char buf[20];
- va_list ap;
- va_start(ap, fmt);
- vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
- return 0;
-}
-int main()
-{
- return (mytest("Hello%d\n", 1));
-}
-EOF
- if try $CC $CFLAGS -o $test $test.c; then
- echo "Checking for vsnprintf() in stdio.h... Yes." | tee -a configure.log
-
- echo >> configure.log
- cat >$test.c <<EOF
-#include <stdio.h>
-#include <stdarg.h>
-int mytest(const char *fmt, ...)
-{
- int n;
- char buf[20];
- va_list ap;
- va_start(ap, fmt);
- n = vsnprintf(buf, sizeof(buf), fmt, ap);
- va_end(ap);
- return n;
-}
-int main()
-{
- return (mytest("Hello%d\n", 1));
-}
-EOF
-
- if try $CC -c $CFLAGS $test.c; then
- echo "Checking for return value of vsnprintf()... Yes." | tee -a configure.log
- else
- CFLAGS="$CFLAGS -DHAS_vsnprintf_void"
- SFLAGS="$SFLAGS -DHAS_vsnprintf_void"
- echo "Checking for return value of vsnprintf()... No." | tee -a configure.log
- echo " WARNING: apparently vsnprintf() does not return a value. zlib" | tee -a configure.log
- echo " can build but will be open to possible string-format security" | tee -a configure.log
- echo " vulnerabilities." | tee -a configure.log
- fi
- else
- CFLAGS="$CFLAGS -DNO_vsnprintf"
- SFLAGS="$SFLAGS -DNO_vsnprintf"
- echo "Checking for vsnprintf() in stdio.h... No." | tee -a configure.log
- echo " WARNING: vsnprintf() not found, falling back to vsprintf(). zlib" | tee -a configure.log
- echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
- echo " vulnerabilities." | tee -a configure.log
-
- echo >> configure.log
- cat >$test.c <<EOF
-#include <stdio.h>
-#include <stdarg.h>
-int mytest(const char *fmt, ...)
-{
- int n;
- char buf[20];
- va_list ap;
- va_start(ap, fmt);
- n = vsprintf(buf, fmt, ap);
- va_end(ap);
- return n;
-}
-int main()
-{
- return (mytest("Hello%d\n", 1));
-}
-EOF
-
- if try $CC -c $CFLAGS $test.c; then
- echo "Checking for return value of vsprintf()... Yes." | tee -a configure.log
- else
- CFLAGS="$CFLAGS -DHAS_vsprintf_void"
- SFLAGS="$SFLAGS -DHAS_vsprintf_void"
- echo "Checking for return value of vsprintf()... No." | tee -a configure.log
- echo " WARNING: apparently vsprintf() does not return a value. zlib" | tee -a configure.log
- echo " can build but will be open to possible string-format security" | tee -a configure.log
- echo " vulnerabilities." | tee -a configure.log
- fi
- fi
-else
- echo "Checking whether to use vs[n]printf() or s[n]printf()... using s[n]printf()." | tee -a configure.log
-
- echo >> configure.log
- cat >$test.c <<EOF
-#include <stdio.h>
-int mytest()
-{
- char buf[20];
- snprintf(buf, sizeof(buf), "%s", "foo");
- return 0;
-}
-int main()
-{
- return (mytest());
-}
-EOF
-
- if try $CC $CFLAGS -o $test $test.c; then
- echo "Checking for snprintf() in stdio.h... Yes." | tee -a configure.log
-
- echo >> configure.log
- cat >$test.c <<EOF
-#include <stdio.h>
-int mytest()
-{
- char buf[20];
- return snprintf(buf, sizeof(buf), "%s", "foo");
-}
-int main()
-{
- return (mytest());
-}
-EOF
-
- if try $CC -c $CFLAGS $test.c; then
- echo "Checking for return value of snprintf()... Yes." | tee -a configure.log
- else
- CFLAGS="$CFLAGS -DHAS_snprintf_void"
- SFLAGS="$SFLAGS -DHAS_snprintf_void"
- echo "Checking for return value of snprintf()... No." | tee -a configure.log
- echo " WARNING: apparently snprintf() does not return a value. zlib" | tee -a configure.log
- echo " can build but will be open to possible string-format security" | tee -a configure.log
- echo " vulnerabilities." | tee -a configure.log
- fi
- else
- CFLAGS="$CFLAGS -DNO_snprintf"
- SFLAGS="$SFLAGS -DNO_snprintf"
- echo "Checking for snprintf() in stdio.h... No." | tee -a configure.log
- echo " WARNING: snprintf() not found, falling back to sprintf(). zlib" | tee -a configure.log
- echo " can build but will be open to possible buffer-overflow security" | tee -a configure.log
- echo " vulnerabilities." | tee -a configure.log
-
- echo >> configure.log
- cat >$test.c <<EOF
-#include <stdio.h>
-int mytest()
-{
- char buf[20];
- return sprintf(buf, "%s", "foo");
-}
-int main()
-{
- return (mytest());
-}
-EOF
-
- if try $CC -c $CFLAGS $test.c; then
- echo "Checking for return value of sprintf()... Yes." | tee -a configure.log
- else
- CFLAGS="$CFLAGS -DHAS_sprintf_void"
- SFLAGS="$SFLAGS -DHAS_sprintf_void"
- echo "Checking for return value of sprintf()... No." | tee -a configure.log
- echo " WARNING: apparently sprintf() does not return a value. zlib" | tee -a configure.log
- echo " can build but will be open to possible string-format security" | tee -a configure.log
- echo " vulnerabilities." | tee -a configure.log
- fi
- fi
-fi
-
-# see if we can hide zlib internal symbols that are linked between separate source files
-if test "$gcc" -eq 1; then
- echo >> configure.log
- cat > $test.c <<EOF
-#define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
-int ZLIB_INTERNAL foo;
-int main()
-{
- return 0;
-}
-EOF
- if tryboth $CC -c $CFLAGS $test.c; then
- CFLAGS="$CFLAGS -DHAVE_HIDDEN"
- SFLAGS="$SFLAGS -DHAVE_HIDDEN"
- echo "Checking for attribute(visibility) support... Yes." | tee -a configure.log
- else
- echo "Checking for attribute(visibility) support... No." | tee -a configure.log
- fi
-fi
-
-# show the results in the log
-echo >> configure.log
-echo ALL = $ALL >> configure.log
-echo AR = $AR >> configure.log
-echo ARFLAGS = $ARFLAGS >> configure.log
-echo CC = $CC >> configure.log
-echo CFLAGS = $CFLAGS >> configure.log
-echo CPP = $CPP >> configure.log
-echo EXE = $EXE >> configure.log
-echo LDCONFIG = $LDCONFIG >> configure.log
-echo LDFLAGS = $LDFLAGS >> configure.log
-echo LDSHARED = $LDSHARED >> configure.log
-echo LDSHAREDLIBC = $LDSHAREDLIBC >> configure.log
-echo OBJC = $OBJC >> configure.log
-echo PIC_OBJC = $PIC_OBJC >> configure.log
-echo RANLIB = $RANLIB >> configure.log
-echo SFLAGS = $SFLAGS >> configure.log
-echo SHAREDLIB = $SHAREDLIB >> configure.log
-echo SHAREDLIBM = $SHAREDLIBM >> configure.log
-echo SHAREDLIBV = $SHAREDLIBV >> configure.log
-echo STATICLIB = $STATICLIB >> configure.log
-echo TEST = $TEST >> configure.log
-echo VER = $VER >> configure.log
-echo Z_U4 = $Z_U4 >> configure.log
-echo exec_prefix = $exec_prefix >> configure.log
-echo includedir = $includedir >> configure.log
-echo libdir = $libdir >> configure.log
-echo mandir = $mandir >> configure.log
-echo prefix = $prefix >> configure.log
-echo sharedlibdir = $sharedlibdir >> configure.log
-echo uname = $uname >> configure.log
-
-# udpate Makefile with the configure results
-sed < Makefile.in "
-/^CC *=/s#=.*#=$CC#
-/^CFLAGS *=/s#=.*#=$CFLAGS#
-/^SFLAGS *=/s#=.*#=$SFLAGS#
-/^LDFLAGS *=/s#=.*#=$LDFLAGS#
-/^LDSHARED *=/s#=.*#=$LDSHARED#
-/^CPP *=/s#=.*#=$CPP#
-/^STATICLIB *=/s#=.*#=$STATICLIB#
-/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
-/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
-/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
-/^AR *=/s#=.*#=$AR#
-/^ARFLAGS *=/s#=.*#=$ARFLAGS#
-/^RANLIB *=/s#=.*#=$RANLIB#
-/^LDCONFIG *=/s#=.*#=$LDCONFIG#
-/^LDSHAREDLIBC *=/s#=.*#=$LDSHAREDLIBC#
-/^EXE *=/s#=.*#=$EXE#
-/^prefix *=/s#=.*#=$prefix#
-/^exec_prefix *=/s#=.*#=$exec_prefix#
-/^libdir *=/s#=.*#=$libdir#
-/^sharedlibdir *=/s#=.*#=$sharedlibdir#
-/^includedir *=/s#=.*#=$includedir#
-/^mandir *=/s#=.*#=$mandir#
-/^OBJC *=/s#=.*#= $OBJC#
-/^PIC_OBJC *=/s#=.*#= $PIC_OBJC#
-/^all: */s#:.*#: $ALL#
-/^test: */s#:.*#: $TEST#
-" > Makefile
-
-# create zlib.pc with the configure results
-sed < zlib.pc.in "
-/^CC *=/s#=.*#=$CC#
-/^CFLAGS *=/s#=.*#=$CFLAGS#
-/^CPP *=/s#=.*#=$CPP#
-/^LDSHARED *=/s#=.*#=$LDSHARED#
-/^STATICLIB *=/s#=.*#=$STATICLIB#
-/^SHAREDLIB *=/s#=.*#=$SHAREDLIB#
-/^SHAREDLIBV *=/s#=.*#=$SHAREDLIBV#
-/^SHAREDLIBM *=/s#=.*#=$SHAREDLIBM#
-/^AR *=/s#=.*#=$AR#
-/^ARFLAGS *=/s#=.*#=$ARFLAGS#
-/^RANLIB *=/s#=.*#=$RANLIB#
-/^EXE *=/s#=.*#=$EXE#
-/^prefix *=/s#=.*#=$prefix#
-/^exec_prefix *=/s#=.*#=$exec_prefix#
-/^libdir *=/s#=.*#=$libdir#
-/^sharedlibdir *=/s#=.*#=$sharedlibdir#
-/^includedir *=/s#=.*#=$includedir#
-/^mandir *=/s#=.*#=$mandir#
-/^LDFLAGS *=/s#=.*#=$LDFLAGS#
-" | sed -e "
-s/\@VERSION\@/$VER/g;
-" > zlib.pc
-
-# done
-leave 0
+++ /dev/null
-/* crc32.c -- compute the CRC-32 of a data stream
- * Copyright (C) 1995-2006, 2010, 2011, 2012 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- *
- * Thanks to Rodney Brown <rbrown64@csc.com.au> for his contribution of faster
- * CRC methods: exclusive-oring 32 bits of data at a time, and pre-computing
- * tables for updating the shift register in one step with three exclusive-ors
- * instead of four steps with four exclusive-ors. This results in about a
- * factor of two increase in speed on a Power PC G4 (PPC7455) using gcc -O3.
- */
-
-/* @(#) $Id$ */
-
-/*
- Note on the use of DYNAMIC_CRC_TABLE: there is no mutex or semaphore
- protection on the static variables used to control the first-use generation
- of the crc tables. Therefore, if you #define DYNAMIC_CRC_TABLE, you should
- first call get_crc_table() to initialize the tables before allowing more than
- one thread to use crc32().
-
- DYNAMIC_CRC_TABLE and MAKECRCH can be #defined to write out crc32.h.
- */
-
-#ifdef MAKECRCH
-# include <stdio.h>
-# ifndef DYNAMIC_CRC_TABLE
-# define DYNAMIC_CRC_TABLE
-# endif /* !DYNAMIC_CRC_TABLE */
-#endif /* MAKECRCH */
-
-#include "zutil.h" /* for STDC and FAR definitions */
-
-#define local static
-
-/* Definitions for doing the crc four data bytes at a time. */
-#if !defined(NOBYFOUR) && defined(Z_U4)
-# define BYFOUR
-#endif
-#ifdef BYFOUR
- local unsigned long crc32_little OF((unsigned long,
- const unsigned char FAR *, unsigned));
- local unsigned long crc32_big OF((unsigned long,
- const unsigned char FAR *, unsigned));
-# define TBLS 8
-#else
-# define TBLS 1
-#endif /* BYFOUR */
-
-/* Local functions for crc concatenation */
-local unsigned long gf2_matrix_times OF((unsigned long *mat,
- unsigned long vec));
-local void gf2_matrix_square OF((unsigned long *square, unsigned long *mat));
-local uLong crc32_combine_ OF((uLong crc1, uLong crc2, z_off64_t len2));
-
-
-#ifdef DYNAMIC_CRC_TABLE
-
-local volatile int crc_table_empty = 1;
-local z_crc_t FAR crc_table[TBLS][256];
-local void make_crc_table OF((void));
-#ifdef MAKECRCH
- local void write_table OF((FILE *, const z_crc_t FAR *));
-#endif /* MAKECRCH */
-/*
- Generate tables for a byte-wise 32-bit CRC calculation on the polynomial:
- x^32+x^26+x^23+x^22+x^16+x^12+x^11+x^10+x^8+x^7+x^5+x^4+x^2+x+1.
-
- Polynomials over GF(2) are represented in binary, one bit per coefficient,
- with the lowest powers in the most significant bit. Then adding polynomials
- is just exclusive-or, and multiplying a polynomial by x is a right shift by
- one. If we call the above polynomial p, and represent a byte as the
- polynomial q, also with the lowest power in the most significant bit (so the
- byte 0xb1 is the polynomial x^7+x^3+x+1), then the CRC is (q*x^32) mod p,
- where a mod b means the remainder after dividing a by b.
-
- This calculation is done using the shift-register method of multiplying and
- taking the remainder. The register is initialized to zero, and for each
- incoming bit, x^32 is added mod p to the register if the bit is a one (where
- x^32 mod p is p+x^32 = x^26+...+1), and the register is multiplied mod p by
- x (which is shifting right by one and adding x^32 mod p if the bit shifted
- out is a one). We start with the highest power (least significant bit) of
- q and repeat for all eight bits of q.
-
- The first table is simply the CRC of all possible eight bit values. This is
- all the information needed to generate CRCs on data a byte at a time for all
- combinations of CRC register values and incoming bytes. The remaining tables
- allow for word-at-a-time CRC calculation for both big-endian and little-
- endian machines, where a word is four bytes.
-*/
-local void make_crc_table()
-{
- z_crc_t c;
- int n, k;
- z_crc_t poly; /* polynomial exclusive-or pattern */
- /* terms of polynomial defining this crc (except x^32): */
- static volatile int first = 1; /* flag to limit concurrent making */
- static const unsigned char p[] = {0,1,2,4,5,7,8,10,11,12,16,22,23,26};
-
- /* See if another task is already doing this (not thread-safe, but better
- than nothing -- significantly reduces duration of vulnerability in
- case the advice about DYNAMIC_CRC_TABLE is ignored) */
- if (first) {
- first = 0;
-
- /* make exclusive-or pattern from polynomial (0xedb88320UL) */
- poly = 0;
- for (n = 0; n < (int)(sizeof(p)/sizeof(unsigned char)); n++)
- poly |= (z_crc_t)1 << (31 - p[n]);
-
- /* generate a crc for every 8-bit value */
- for (n = 0; n < 256; n++) {
- c = (z_crc_t)n;
- for (k = 0; k < 8; k++)
- c = c & 1 ? poly ^ (c >> 1) : c >> 1;
- crc_table[0][n] = c;
- }
-
-#ifdef BYFOUR
- /* generate crc for each value followed by one, two, and three zeros,
- and then the byte reversal of those as well as the first table */
- for (n = 0; n < 256; n++) {
- c = crc_table[0][n];
- crc_table[4][n] = ZSWAP32(c);
- for (k = 1; k < 4; k++) {
- c = crc_table[0][c & 0xff] ^ (c >> 8);
- crc_table[k][n] = c;
- crc_table[k + 4][n] = ZSWAP32(c);
- }
- }
-#endif /* BYFOUR */
-
- crc_table_empty = 0;
- }
- else { /* not first */
- /* wait for the other guy to finish (not efficient, but rare) */
- while (crc_table_empty)
- ;
- }
-
-#ifdef MAKECRCH
- /* write out CRC tables to crc32.h */
- {
- FILE *out;
-
- out = fopen("crc32.h", "w");
- if (out == NULL) return;
- fprintf(out, "/* crc32.h -- tables for rapid CRC calculation\n");
- fprintf(out, " * Generated automatically by crc32.c\n */\n\n");
- fprintf(out, "local const z_crc_t FAR ");
- fprintf(out, "crc_table[TBLS][256] =\n{\n {\n");
- write_table(out, crc_table[0]);
-# ifdef BYFOUR
- fprintf(out, "#ifdef BYFOUR\n");
- for (k = 1; k < 8; k++) {
- fprintf(out, " },\n {\n");
- write_table(out, crc_table[k]);
- }
- fprintf(out, "#endif\n");
-# endif /* BYFOUR */
- fprintf(out, " }\n};\n");
- fclose(out);
- }
-#endif /* MAKECRCH */
-}
-
-#ifdef MAKECRCH
-local void write_table(out, table)
- FILE *out;
- const z_crc_t FAR *table;
-{
- int n;
-
- for (n = 0; n < 256; n++)
- fprintf(out, "%s0x%08lxUL%s", n % 5 ? "" : " ",
- (unsigned long)(table[n]),
- n == 255 ? "\n" : (n % 5 == 4 ? ",\n" : ", "));
-}
-#endif /* MAKECRCH */
-
-#else /* !DYNAMIC_CRC_TABLE */
-/* ========================================================================
- * Tables of CRC-32s of all single-byte values, made by make_crc_table().
- */
-#include "crc32.h"
-#endif /* DYNAMIC_CRC_TABLE */
-
-/* =========================================================================
- * This function can be used by asm versions of crc32()
- */
-const z_crc_t FAR * ZEXPORT get_crc_table()
-{
-#ifdef DYNAMIC_CRC_TABLE
- if (crc_table_empty)
- make_crc_table();
-#endif /* DYNAMIC_CRC_TABLE */
- return (const z_crc_t FAR *)crc_table;
-}
-
-/* ========================================================================= */
-#define DO1 crc = crc_table[0][((int)crc ^ (*buf++)) & 0xff] ^ (crc >> 8)
-#define DO8 DO1; DO1; DO1; DO1; DO1; DO1; DO1; DO1
-
-/* ========================================================================= */
-unsigned long ZEXPORT crc32(crc, buf, len)
- unsigned long crc;
- const unsigned char FAR *buf;
- uInt len;
-{
- if (buf == Z_NULL) return 0UL;
-
-#ifdef DYNAMIC_CRC_TABLE
- if (crc_table_empty)
- make_crc_table();
-#endif /* DYNAMIC_CRC_TABLE */
-
-#ifdef BYFOUR
- if (sizeof(void *) == sizeof(ptrdiff_t)) {
- z_crc_t endian;
-
- endian = 1;
- if (*((unsigned char *)(&endian)))
- return crc32_little(crc, buf, len);
- else
- return crc32_big(crc, buf, len);
- }
-#endif /* BYFOUR */
- crc = crc ^ 0xffffffffUL;
- while (len >= 8) {
- DO8;
- len -= 8;
- }
- if (len) do {
- DO1;
- } while (--len);
- return crc ^ 0xffffffffUL;
-}
-
-#ifdef BYFOUR
-
-/* ========================================================================= */
-#define DOLIT4 c ^= *buf4++; \
- c = crc_table[3][c & 0xff] ^ crc_table[2][(c >> 8) & 0xff] ^ \
- crc_table[1][(c >> 16) & 0xff] ^ crc_table[0][c >> 24]
-#define DOLIT32 DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4; DOLIT4
-
-/* ========================================================================= */
-local unsigned long crc32_little(crc, buf, len)
- unsigned long crc;
- const unsigned char FAR *buf;
- unsigned len;
-{
- register z_crc_t c;
- register const z_crc_t FAR *buf4;
-
- c = (z_crc_t)crc;
- c = ~c;
- while (len && ((ptrdiff_t)buf & 3)) {
- c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
- len--;
- }
-
- buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
- while (len >= 32) {
- DOLIT32;
- len -= 32;
- }
- while (len >= 4) {
- DOLIT4;
- len -= 4;
- }
- buf = (const unsigned char FAR *)buf4;
-
- if (len) do {
- c = crc_table[0][(c ^ *buf++) & 0xff] ^ (c >> 8);
- } while (--len);
- c = ~c;
- return (unsigned long)c;
-}
-
-/* ========================================================================= */
-#define DOBIG4 c ^= *++buf4; \
- c = crc_table[4][c & 0xff] ^ crc_table[5][(c >> 8) & 0xff] ^ \
- crc_table[6][(c >> 16) & 0xff] ^ crc_table[7][c >> 24]
-#define DOBIG32 DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4; DOBIG4
-
-/* ========================================================================= */
-local unsigned long crc32_big(crc, buf, len)
- unsigned long crc;
- const unsigned char FAR *buf;
- unsigned len;
-{
- register z_crc_t c;
- register const z_crc_t FAR *buf4;
-
- c = ZSWAP32((z_crc_t)crc);
- c = ~c;
- while (len && ((ptrdiff_t)buf & 3)) {
- c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
- len--;
- }
-
- buf4 = (const z_crc_t FAR *)(const void FAR *)buf;
- buf4--;
- while (len >= 32) {
- DOBIG32;
- len -= 32;
- }
- while (len >= 4) {
- DOBIG4;
- len -= 4;
- }
- buf4++;
- buf = (const unsigned char FAR *)buf4;
-
- if (len) do {
- c = crc_table[4][(c >> 24) ^ *buf++] ^ (c << 8);
- } while (--len);
- c = ~c;
- return (unsigned long)(ZSWAP32(c));
-}
-
-#endif /* BYFOUR */
-
-#define GF2_DIM 32 /* dimension of GF(2) vectors (length of CRC) */
-
-/* ========================================================================= */
-local unsigned long gf2_matrix_times(mat, vec)
- unsigned long *mat;
- unsigned long vec;
-{
- unsigned long sum;
-
- sum = 0;
- while (vec) {
- if (vec & 1)
- sum ^= *mat;
- vec >>= 1;
- mat++;
- }
- return sum;
-}
-
-/* ========================================================================= */
-local void gf2_matrix_square(square, mat)
- unsigned long *square;
- unsigned long *mat;
-{
- int n;
-
- for (n = 0; n < GF2_DIM; n++)
- square[n] = gf2_matrix_times(mat, mat[n]);
-}
-
-/* ========================================================================= */
-local uLong crc32_combine_(crc1, crc2, len2)
- uLong crc1;
- uLong crc2;
- z_off64_t len2;
-{
- int n;
- unsigned long row;
- unsigned long even[GF2_DIM]; /* even-power-of-two zeros operator */
- unsigned long odd[GF2_DIM]; /* odd-power-of-two zeros operator */
-
- /* degenerate case (also disallow negative lengths) */
- if (len2 <= 0)
- return crc1;
-
- /* put operator for one zero bit in odd */
- odd[0] = 0xedb88320UL; /* CRC-32 polynomial */
- row = 1;
- for (n = 1; n < GF2_DIM; n++) {
- odd[n] = row;
- row <<= 1;
- }
-
- /* put operator for two zero bits in even */
- gf2_matrix_square(even, odd);
-
- /* put operator for four zero bits in odd */
- gf2_matrix_square(odd, even);
-
- /* apply len2 zeros to crc1 (first square will put the operator for one
- zero byte, eight zero bits, in even) */
- do {
- /* apply zeros operator for this bit of len2 */
- gf2_matrix_square(even, odd);
- if (len2 & 1)
- crc1 = gf2_matrix_times(even, crc1);
- len2 >>= 1;
-
- /* if no more bits set, then done */
- if (len2 == 0)
- break;
-
- /* another iteration of the loop with odd and even swapped */
- gf2_matrix_square(odd, even);
- if (len2 & 1)
- crc1 = gf2_matrix_times(odd, crc1);
- len2 >>= 1;
-
- /* if no more bits set, then done */
- } while (len2 != 0);
-
- /* return combined crc */
- crc1 ^= crc2;
- return crc1;
-}
-
-/* ========================================================================= */
-uLong ZEXPORT crc32_combine(crc1, crc2, len2)
- uLong crc1;
- uLong crc2;
- z_off_t len2;
-{
- return crc32_combine_(crc1, crc2, len2);
-}
-
-uLong ZEXPORT crc32_combine64(crc1, crc2, len2)
- uLong crc1;
- uLong crc2;
- z_off64_t len2;
-{
- return crc32_combine_(crc1, crc2, len2);
-}
+++ /dev/null
-/* crc32.h -- tables for rapid CRC calculation
- * Generated automatically by crc32.c
- */
-
-local const z_crc_t FAR crc_table[TBLS][256] =
-{
- {
- 0x00000000UL, 0x77073096UL, 0xee0e612cUL, 0x990951baUL, 0x076dc419UL,
- 0x706af48fUL, 0xe963a535UL, 0x9e6495a3UL, 0x0edb8832UL, 0x79dcb8a4UL,
- 0xe0d5e91eUL, 0x97d2d988UL, 0x09b64c2bUL, 0x7eb17cbdUL, 0xe7b82d07UL,
- 0x90bf1d91UL, 0x1db71064UL, 0x6ab020f2UL, 0xf3b97148UL, 0x84be41deUL,
- 0x1adad47dUL, 0x6ddde4ebUL, 0xf4d4b551UL, 0x83d385c7UL, 0x136c9856UL,
- 0x646ba8c0UL, 0xfd62f97aUL, 0x8a65c9ecUL, 0x14015c4fUL, 0x63066cd9UL,
- 0xfa0f3d63UL, 0x8d080df5UL, 0x3b6e20c8UL, 0x4c69105eUL, 0xd56041e4UL,
- 0xa2677172UL, 0x3c03e4d1UL, 0x4b04d447UL, 0xd20d85fdUL, 0xa50ab56bUL,
- 0x35b5a8faUL, 0x42b2986cUL, 0xdbbbc9d6UL, 0xacbcf940UL, 0x32d86ce3UL,
- 0x45df5c75UL, 0xdcd60dcfUL, 0xabd13d59UL, 0x26d930acUL, 0x51de003aUL,
- 0xc8d75180UL, 0xbfd06116UL, 0x21b4f4b5UL, 0x56b3c423UL, 0xcfba9599UL,
- 0xb8bda50fUL, 0x2802b89eUL, 0x5f058808UL, 0xc60cd9b2UL, 0xb10be924UL,
- 0x2f6f7c87UL, 0x58684c11UL, 0xc1611dabUL, 0xb6662d3dUL, 0x76dc4190UL,
- 0x01db7106UL, 0x98d220bcUL, 0xefd5102aUL, 0x71b18589UL, 0x06b6b51fUL,
- 0x9fbfe4a5UL, 0xe8b8d433UL, 0x7807c9a2UL, 0x0f00f934UL, 0x9609a88eUL,
- 0xe10e9818UL, 0x7f6a0dbbUL, 0x086d3d2dUL, 0x91646c97UL, 0xe6635c01UL,
- 0x6b6b51f4UL, 0x1c6c6162UL, 0x856530d8UL, 0xf262004eUL, 0x6c0695edUL,
- 0x1b01a57bUL, 0x8208f4c1UL, 0xf50fc457UL, 0x65b0d9c6UL, 0x12b7e950UL,
- 0x8bbeb8eaUL, 0xfcb9887cUL, 0x62dd1ddfUL, 0x15da2d49UL, 0x8cd37cf3UL,
- 0xfbd44c65UL, 0x4db26158UL, 0x3ab551ceUL, 0xa3bc0074UL, 0xd4bb30e2UL,
- 0x4adfa541UL, 0x3dd895d7UL, 0xa4d1c46dUL, 0xd3d6f4fbUL, 0x4369e96aUL,
- 0x346ed9fcUL, 0xad678846UL, 0xda60b8d0UL, 0x44042d73UL, 0x33031de5UL,
- 0xaa0a4c5fUL, 0xdd0d7cc9UL, 0x5005713cUL, 0x270241aaUL, 0xbe0b1010UL,
- 0xc90c2086UL, 0x5768b525UL, 0x206f85b3UL, 0xb966d409UL, 0xce61e49fUL,
- 0x5edef90eUL, 0x29d9c998UL, 0xb0d09822UL, 0xc7d7a8b4UL, 0x59b33d17UL,
- 0x2eb40d81UL, 0xb7bd5c3bUL, 0xc0ba6cadUL, 0xedb88320UL, 0x9abfb3b6UL,
- 0x03b6e20cUL, 0x74b1d29aUL, 0xead54739UL, 0x9dd277afUL, 0x04db2615UL,
- 0x73dc1683UL, 0xe3630b12UL, 0x94643b84UL, 0x0d6d6a3eUL, 0x7a6a5aa8UL,
- 0xe40ecf0bUL, 0x9309ff9dUL, 0x0a00ae27UL, 0x7d079eb1UL, 0xf00f9344UL,
- 0x8708a3d2UL, 0x1e01f268UL, 0x6906c2feUL, 0xf762575dUL, 0x806567cbUL,
- 0x196c3671UL, 0x6e6b06e7UL, 0xfed41b76UL, 0x89d32be0UL, 0x10da7a5aUL,
- 0x67dd4accUL, 0xf9b9df6fUL, 0x8ebeeff9UL, 0x17b7be43UL, 0x60b08ed5UL,
- 0xd6d6a3e8UL, 0xa1d1937eUL, 0x38d8c2c4UL, 0x4fdff252UL, 0xd1bb67f1UL,
- 0xa6bc5767UL, 0x3fb506ddUL, 0x48b2364bUL, 0xd80d2bdaUL, 0xaf0a1b4cUL,
- 0x36034af6UL, 0x41047a60UL, 0xdf60efc3UL, 0xa867df55UL, 0x316e8eefUL,
- 0x4669be79UL, 0xcb61b38cUL, 0xbc66831aUL, 0x256fd2a0UL, 0x5268e236UL,
- 0xcc0c7795UL, 0xbb0b4703UL, 0x220216b9UL, 0x5505262fUL, 0xc5ba3bbeUL,
- 0xb2bd0b28UL, 0x2bb45a92UL, 0x5cb36a04UL, 0xc2d7ffa7UL, 0xb5d0cf31UL,
- 0x2cd99e8bUL, 0x5bdeae1dUL, 0x9b64c2b0UL, 0xec63f226UL, 0x756aa39cUL,
- 0x026d930aUL, 0x9c0906a9UL, 0xeb0e363fUL, 0x72076785UL, 0x05005713UL,
- 0x95bf4a82UL, 0xe2b87a14UL, 0x7bb12baeUL, 0x0cb61b38UL, 0x92d28e9bUL,
- 0xe5d5be0dUL, 0x7cdcefb7UL, 0x0bdbdf21UL, 0x86d3d2d4UL, 0xf1d4e242UL,
- 0x68ddb3f8UL, 0x1fda836eUL, 0x81be16cdUL, 0xf6b9265bUL, 0x6fb077e1UL,
- 0x18b74777UL, 0x88085ae6UL, 0xff0f6a70UL, 0x66063bcaUL, 0x11010b5cUL,
- 0x8f659effUL, 0xf862ae69UL, 0x616bffd3UL, 0x166ccf45UL, 0xa00ae278UL,
- 0xd70dd2eeUL, 0x4e048354UL, 0x3903b3c2UL, 0xa7672661UL, 0xd06016f7UL,
- 0x4969474dUL, 0x3e6e77dbUL, 0xaed16a4aUL, 0xd9d65adcUL, 0x40df0b66UL,
- 0x37d83bf0UL, 0xa9bcae53UL, 0xdebb9ec5UL, 0x47b2cf7fUL, 0x30b5ffe9UL,
- 0xbdbdf21cUL, 0xcabac28aUL, 0x53b39330UL, 0x24b4a3a6UL, 0xbad03605UL,
- 0xcdd70693UL, 0x54de5729UL, 0x23d967bfUL, 0xb3667a2eUL, 0xc4614ab8UL,
- 0x5d681b02UL, 0x2a6f2b94UL, 0xb40bbe37UL, 0xc30c8ea1UL, 0x5a05df1bUL,
- 0x2d02ef8dUL
-#ifdef BYFOUR
- },
- {
- 0x00000000UL, 0x191b3141UL, 0x32366282UL, 0x2b2d53c3UL, 0x646cc504UL,
- 0x7d77f445UL, 0x565aa786UL, 0x4f4196c7UL, 0xc8d98a08UL, 0xd1c2bb49UL,
- 0xfaefe88aUL, 0xe3f4d9cbUL, 0xacb54f0cUL, 0xb5ae7e4dUL, 0x9e832d8eUL,
- 0x87981ccfUL, 0x4ac21251UL, 0x53d92310UL, 0x78f470d3UL, 0x61ef4192UL,
- 0x2eaed755UL, 0x37b5e614UL, 0x1c98b5d7UL, 0x05838496UL, 0x821b9859UL,
- 0x9b00a918UL, 0xb02dfadbUL, 0xa936cb9aUL, 0xe6775d5dUL, 0xff6c6c1cUL,
- 0xd4413fdfUL, 0xcd5a0e9eUL, 0x958424a2UL, 0x8c9f15e3UL, 0xa7b24620UL,
- 0xbea97761UL, 0xf1e8e1a6UL, 0xe8f3d0e7UL, 0xc3de8324UL, 0xdac5b265UL,
- 0x5d5daeaaUL, 0x44469febUL, 0x6f6bcc28UL, 0x7670fd69UL, 0x39316baeUL,
- 0x202a5aefUL, 0x0b07092cUL, 0x121c386dUL, 0xdf4636f3UL, 0xc65d07b2UL,
- 0xed705471UL, 0xf46b6530UL, 0xbb2af3f7UL, 0xa231c2b6UL, 0x891c9175UL,
- 0x9007a034UL, 0x179fbcfbUL, 0x0e848dbaUL, 0x25a9de79UL, 0x3cb2ef38UL,
- 0x73f379ffUL, 0x6ae848beUL, 0x41c51b7dUL, 0x58de2a3cUL, 0xf0794f05UL,
- 0xe9627e44UL, 0xc24f2d87UL, 0xdb541cc6UL, 0x94158a01UL, 0x8d0ebb40UL,
- 0xa623e883UL, 0xbf38d9c2UL, 0x38a0c50dUL, 0x21bbf44cUL, 0x0a96a78fUL,
- 0x138d96ceUL, 0x5ccc0009UL, 0x45d73148UL, 0x6efa628bUL, 0x77e153caUL,
- 0xbabb5d54UL, 0xa3a06c15UL, 0x888d3fd6UL, 0x91960e97UL, 0xded79850UL,
- 0xc7cca911UL, 0xece1fad2UL, 0xf5facb93UL, 0x7262d75cUL, 0x6b79e61dUL,
- 0x4054b5deUL, 0x594f849fUL, 0x160e1258UL, 0x0f152319UL, 0x243870daUL,
- 0x3d23419bUL, 0x65fd6ba7UL, 0x7ce65ae6UL, 0x57cb0925UL, 0x4ed03864UL,
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- 0x8b9ed92cUL, 0x1daede5bUL, 0xb0c2649bUL, 0x26f263ecUL, 0x9ca36a75UL,
- 0x0a936d02UL, 0xa906099cUL, 0x3f360eebUL, 0x85670772UL, 0x13570005UL,
- 0x824abf95UL, 0x147ab8e2UL, 0xae2bb17bUL, 0x381bb60cUL, 0x9b8ed292UL,
- 0x0dbed5e5UL, 0xb7efdc7cUL, 0x21dfdb0bUL, 0xd4d2d386UL, 0x42e2d4f1UL,
- 0xf8b3dd68UL, 0x6e83da1fUL, 0xcd16be81UL, 0x5b26b9f6UL, 0xe177b06fUL,
- 0x7747b718UL, 0xe65a0888UL, 0x706a0fffUL, 0xca3b0666UL, 0x5c0b0111UL,
- 0xff9e658fUL, 0x69ae62f8UL, 0xd3ff6b61UL, 0x45cf6c16UL, 0x78e20aa0UL,
- 0xeed20dd7UL, 0x5483044eUL, 0xc2b30339UL, 0x612667a7UL, 0xf71660d0UL,
- 0x4d476949UL, 0xdb776e3eUL, 0x4a6ad1aeUL, 0xdc5ad6d9UL, 0x660bdf40UL,
- 0xf03bd837UL, 0x53aebca9UL, 0xc59ebbdeUL, 0x7fcfb247UL, 0xe9ffb530UL,
- 0x1cf2bdbdUL, 0x8ac2bacaUL, 0x3093b353UL, 0xa6a3b424UL, 0x0536d0baUL,
- 0x9306d7cdUL, 0x2957de54UL, 0xbf67d923UL, 0x2e7a66b3UL, 0xb84a61c4UL,
- 0x021b685dUL, 0x942b6f2aUL, 0x37be0bb4UL, 0xa18e0cc3UL, 0x1bdf055aUL,
- 0x8def022dUL
- },
- {
- 0x00000000UL, 0x41311b19UL, 0x82623632UL, 0xc3532d2bUL, 0x04c56c64UL,
- 0x45f4777dUL, 0x86a75a56UL, 0xc796414fUL, 0x088ad9c8UL, 0x49bbc2d1UL,
- 0x8ae8effaUL, 0xcbd9f4e3UL, 0x0c4fb5acUL, 0x4d7eaeb5UL, 0x8e2d839eUL,
- 0xcf1c9887UL, 0x5112c24aUL, 0x1023d953UL, 0xd370f478UL, 0x9241ef61UL,
- 0x55d7ae2eUL, 0x14e6b537UL, 0xd7b5981cUL, 0x96848305UL, 0x59981b82UL,
- 0x18a9009bUL, 0xdbfa2db0UL, 0x9acb36a9UL, 0x5d5d77e6UL, 0x1c6c6cffUL,
- 0xdf3f41d4UL, 0x9e0e5acdUL, 0xa2248495UL, 0xe3159f8cUL, 0x2046b2a7UL,
- 0x6177a9beUL, 0xa6e1e8f1UL, 0xe7d0f3e8UL, 0x2483dec3UL, 0x65b2c5daUL,
- 0xaaae5d5dUL, 0xeb9f4644UL, 0x28cc6b6fUL, 0x69fd7076UL, 0xae6b3139UL,
- 0xef5a2a20UL, 0x2c09070bUL, 0x6d381c12UL, 0xf33646dfUL, 0xb2075dc6UL,
- 0x715470edUL, 0x30656bf4UL, 0xf7f32abbUL, 0xb6c231a2UL, 0x75911c89UL,
- 0x34a00790UL, 0xfbbc9f17UL, 0xba8d840eUL, 0x79dea925UL, 0x38efb23cUL,
- 0xff79f373UL, 0xbe48e86aUL, 0x7d1bc541UL, 0x3c2ade58UL, 0x054f79f0UL,
- 0x447e62e9UL, 0x872d4fc2UL, 0xc61c54dbUL, 0x018a1594UL, 0x40bb0e8dUL,
- 0x83e823a6UL, 0xc2d938bfUL, 0x0dc5a038UL, 0x4cf4bb21UL, 0x8fa7960aUL,
- 0xce968d13UL, 0x0900cc5cUL, 0x4831d745UL, 0x8b62fa6eUL, 0xca53e177UL,
- 0x545dbbbaUL, 0x156ca0a3UL, 0xd63f8d88UL, 0x970e9691UL, 0x5098d7deUL,
- 0x11a9ccc7UL, 0xd2fae1ecUL, 0x93cbfaf5UL, 0x5cd76272UL, 0x1de6796bUL,
- 0xdeb55440UL, 0x9f844f59UL, 0x58120e16UL, 0x1923150fUL, 0xda703824UL,
- 0x9b41233dUL, 0xa76bfd65UL, 0xe65ae67cUL, 0x2509cb57UL, 0x6438d04eUL,
- 0xa3ae9101UL, 0xe29f8a18UL, 0x21cca733UL, 0x60fdbc2aUL, 0xafe124adUL,
- 0xeed03fb4UL, 0x2d83129fUL, 0x6cb20986UL, 0xab2448c9UL, 0xea1553d0UL,
- 0x29467efbUL, 0x687765e2UL, 0xf6793f2fUL, 0xb7482436UL, 0x741b091dUL,
- 0x352a1204UL, 0xf2bc534bUL, 0xb38d4852UL, 0x70de6579UL, 0x31ef7e60UL,
- 0xfef3e6e7UL, 0xbfc2fdfeUL, 0x7c91d0d5UL, 0x3da0cbccUL, 0xfa368a83UL,
- 0xbb07919aUL, 0x7854bcb1UL, 0x3965a7a8UL, 0x4b98833bUL, 0x0aa99822UL,
- 0xc9fab509UL, 0x88cbae10UL, 0x4f5def5fUL, 0x0e6cf446UL, 0xcd3fd96dUL,
- 0x8c0ec274UL, 0x43125af3UL, 0x022341eaUL, 0xc1706cc1UL, 0x804177d8UL,
- 0x47d73697UL, 0x06e62d8eUL, 0xc5b500a5UL, 0x84841bbcUL, 0x1a8a4171UL,
- 0x5bbb5a68UL, 0x98e87743UL, 0xd9d96c5aUL, 0x1e4f2d15UL, 0x5f7e360cUL,
- 0x9c2d1b27UL, 0xdd1c003eUL, 0x120098b9UL, 0x533183a0UL, 0x9062ae8bUL,
- 0xd153b592UL, 0x16c5f4ddUL, 0x57f4efc4UL, 0x94a7c2efUL, 0xd596d9f6UL,
- 0xe9bc07aeUL, 0xa88d1cb7UL, 0x6bde319cUL, 0x2aef2a85UL, 0xed796bcaUL,
- 0xac4870d3UL, 0x6f1b5df8UL, 0x2e2a46e1UL, 0xe136de66UL, 0xa007c57fUL,
- 0x6354e854UL, 0x2265f34dUL, 0xe5f3b202UL, 0xa4c2a91bUL, 0x67918430UL,
- 0x26a09f29UL, 0xb8aec5e4UL, 0xf99fdefdUL, 0x3accf3d6UL, 0x7bfde8cfUL,
- 0xbc6ba980UL, 0xfd5ab299UL, 0x3e099fb2UL, 0x7f3884abUL, 0xb0241c2cUL,
- 0xf1150735UL, 0x32462a1eUL, 0x73773107UL, 0xb4e17048UL, 0xf5d06b51UL,
- 0x3683467aUL, 0x77b25d63UL, 0x4ed7facbUL, 0x0fe6e1d2UL, 0xccb5ccf9UL,
- 0x8d84d7e0UL, 0x4a1296afUL, 0x0b238db6UL, 0xc870a09dUL, 0x8941bb84UL,
- 0x465d2303UL, 0x076c381aUL, 0xc43f1531UL, 0x850e0e28UL, 0x42984f67UL,
- 0x03a9547eUL, 0xc0fa7955UL, 0x81cb624cUL, 0x1fc53881UL, 0x5ef42398UL,
- 0x9da70eb3UL, 0xdc9615aaUL, 0x1b0054e5UL, 0x5a314ffcUL, 0x996262d7UL,
- 0xd85379ceUL, 0x174fe149UL, 0x567efa50UL, 0x952dd77bUL, 0xd41ccc62UL,
- 0x138a8d2dUL, 0x52bb9634UL, 0x91e8bb1fUL, 0xd0d9a006UL, 0xecf37e5eUL,
- 0xadc26547UL, 0x6e91486cUL, 0x2fa05375UL, 0xe836123aUL, 0xa9070923UL,
- 0x6a542408UL, 0x2b653f11UL, 0xe479a796UL, 0xa548bc8fUL, 0x661b91a4UL,
- 0x272a8abdUL, 0xe0bccbf2UL, 0xa18dd0ebUL, 0x62defdc0UL, 0x23efe6d9UL,
- 0xbde1bc14UL, 0xfcd0a70dUL, 0x3f838a26UL, 0x7eb2913fUL, 0xb924d070UL,
- 0xf815cb69UL, 0x3b46e642UL, 0x7a77fd5bUL, 0xb56b65dcUL, 0xf45a7ec5UL,
- 0x370953eeUL, 0x763848f7UL, 0xb1ae09b8UL, 0xf09f12a1UL, 0x33cc3f8aUL,
- 0x72fd2493UL
- },
- {
- 0x00000000UL, 0x376ac201UL, 0x6ed48403UL, 0x59be4602UL, 0xdca80907UL,
- 0xebc2cb06UL, 0xb27c8d04UL, 0x85164f05UL, 0xb851130eUL, 0x8f3bd10fUL,
- 0xd685970dUL, 0xe1ef550cUL, 0x64f91a09UL, 0x5393d808UL, 0x0a2d9e0aUL,
- 0x3d475c0bUL, 0x70a3261cUL, 0x47c9e41dUL, 0x1e77a21fUL, 0x291d601eUL,
- 0xac0b2f1bUL, 0x9b61ed1aUL, 0xc2dfab18UL, 0xf5b56919UL, 0xc8f23512UL,
- 0xff98f713UL, 0xa626b111UL, 0x914c7310UL, 0x145a3c15UL, 0x2330fe14UL,
- 0x7a8eb816UL, 0x4de47a17UL, 0xe0464d38UL, 0xd72c8f39UL, 0x8e92c93bUL,
- 0xb9f80b3aUL, 0x3cee443fUL, 0x0b84863eUL, 0x523ac03cUL, 0x6550023dUL,
- 0x58175e36UL, 0x6f7d9c37UL, 0x36c3da35UL, 0x01a91834UL, 0x84bf5731UL,
- 0xb3d59530UL, 0xea6bd332UL, 0xdd011133UL, 0x90e56b24UL, 0xa78fa925UL,
- 0xfe31ef27UL, 0xc95b2d26UL, 0x4c4d6223UL, 0x7b27a022UL, 0x2299e620UL,
- 0x15f32421UL, 0x28b4782aUL, 0x1fdeba2bUL, 0x4660fc29UL, 0x710a3e28UL,
- 0xf41c712dUL, 0xc376b32cUL, 0x9ac8f52eUL, 0xada2372fUL, 0xc08d9a70UL,
- 0xf7e75871UL, 0xae591e73UL, 0x9933dc72UL, 0x1c259377UL, 0x2b4f5176UL,
- 0x72f11774UL, 0x459bd575UL, 0x78dc897eUL, 0x4fb64b7fUL, 0x16080d7dUL,
- 0x2162cf7cUL, 0xa4748079UL, 0x931e4278UL, 0xcaa0047aUL, 0xfdcac67bUL,
- 0xb02ebc6cUL, 0x87447e6dUL, 0xdefa386fUL, 0xe990fa6eUL, 0x6c86b56bUL,
- 0x5bec776aUL, 0x02523168UL, 0x3538f369UL, 0x087faf62UL, 0x3f156d63UL,
- 0x66ab2b61UL, 0x51c1e960UL, 0xd4d7a665UL, 0xe3bd6464UL, 0xba032266UL,
- 0x8d69e067UL, 0x20cbd748UL, 0x17a11549UL, 0x4e1f534bUL, 0x7975914aUL,
- 0xfc63de4fUL, 0xcb091c4eUL, 0x92b75a4cUL, 0xa5dd984dUL, 0x989ac446UL,
- 0xaff00647UL, 0xf64e4045UL, 0xc1248244UL, 0x4432cd41UL, 0x73580f40UL,
- 0x2ae64942UL, 0x1d8c8b43UL, 0x5068f154UL, 0x67023355UL, 0x3ebc7557UL,
- 0x09d6b756UL, 0x8cc0f853UL, 0xbbaa3a52UL, 0xe2147c50UL, 0xd57ebe51UL,
- 0xe839e25aUL, 0xdf53205bUL, 0x86ed6659UL, 0xb187a458UL, 0x3491eb5dUL,
- 0x03fb295cUL, 0x5a456f5eUL, 0x6d2fad5fUL, 0x801b35e1UL, 0xb771f7e0UL,
- 0xeecfb1e2UL, 0xd9a573e3UL, 0x5cb33ce6UL, 0x6bd9fee7UL, 0x3267b8e5UL,
- 0x050d7ae4UL, 0x384a26efUL, 0x0f20e4eeUL, 0x569ea2ecUL, 0x61f460edUL,
- 0xe4e22fe8UL, 0xd388ede9UL, 0x8a36abebUL, 0xbd5c69eaUL, 0xf0b813fdUL,
- 0xc7d2d1fcUL, 0x9e6c97feUL, 0xa90655ffUL, 0x2c101afaUL, 0x1b7ad8fbUL,
- 0x42c49ef9UL, 0x75ae5cf8UL, 0x48e900f3UL, 0x7f83c2f2UL, 0x263d84f0UL,
- 0x115746f1UL, 0x944109f4UL, 0xa32bcbf5UL, 0xfa958df7UL, 0xcdff4ff6UL,
- 0x605d78d9UL, 0x5737bad8UL, 0x0e89fcdaUL, 0x39e33edbUL, 0xbcf571deUL,
- 0x8b9fb3dfUL, 0xd221f5ddUL, 0xe54b37dcUL, 0xd80c6bd7UL, 0xef66a9d6UL,
- 0xb6d8efd4UL, 0x81b22dd5UL, 0x04a462d0UL, 0x33cea0d1UL, 0x6a70e6d3UL,
- 0x5d1a24d2UL, 0x10fe5ec5UL, 0x27949cc4UL, 0x7e2adac6UL, 0x494018c7UL,
- 0xcc5657c2UL, 0xfb3c95c3UL, 0xa282d3c1UL, 0x95e811c0UL, 0xa8af4dcbUL,
- 0x9fc58fcaUL, 0xc67bc9c8UL, 0xf1110bc9UL, 0x740744ccUL, 0x436d86cdUL,
- 0x1ad3c0cfUL, 0x2db902ceUL, 0x4096af91UL, 0x77fc6d90UL, 0x2e422b92UL,
- 0x1928e993UL, 0x9c3ea696UL, 0xab546497UL, 0xf2ea2295UL, 0xc580e094UL,
- 0xf8c7bc9fUL, 0xcfad7e9eUL, 0x9613389cUL, 0xa179fa9dUL, 0x246fb598UL,
- 0x13057799UL, 0x4abb319bUL, 0x7dd1f39aUL, 0x3035898dUL, 0x075f4b8cUL,
- 0x5ee10d8eUL, 0x698bcf8fUL, 0xec9d808aUL, 0xdbf7428bUL, 0x82490489UL,
- 0xb523c688UL, 0x88649a83UL, 0xbf0e5882UL, 0xe6b01e80UL, 0xd1dadc81UL,
- 0x54cc9384UL, 0x63a65185UL, 0x3a181787UL, 0x0d72d586UL, 0xa0d0e2a9UL,
- 0x97ba20a8UL, 0xce0466aaUL, 0xf96ea4abUL, 0x7c78ebaeUL, 0x4b1229afUL,
- 0x12ac6fadUL, 0x25c6adacUL, 0x1881f1a7UL, 0x2feb33a6UL, 0x765575a4UL,
- 0x413fb7a5UL, 0xc429f8a0UL, 0xf3433aa1UL, 0xaafd7ca3UL, 0x9d97bea2UL,
- 0xd073c4b5UL, 0xe71906b4UL, 0xbea740b6UL, 0x89cd82b7UL, 0x0cdbcdb2UL,
- 0x3bb10fb3UL, 0x620f49b1UL, 0x55658bb0UL, 0x6822d7bbUL, 0x5f4815baUL,
- 0x06f653b8UL, 0x319c91b9UL, 0xb48adebcUL, 0x83e01cbdUL, 0xda5e5abfUL,
- 0xed3498beUL
- },
- {
- 0x00000000UL, 0x6567bcb8UL, 0x8bc809aaUL, 0xeeafb512UL, 0x5797628fUL,
- 0x32f0de37UL, 0xdc5f6b25UL, 0xb938d79dUL, 0xef28b4c5UL, 0x8a4f087dUL,
- 0x64e0bd6fUL, 0x018701d7UL, 0xb8bfd64aUL, 0xddd86af2UL, 0x3377dfe0UL,
- 0x56106358UL, 0x9f571950UL, 0xfa30a5e8UL, 0x149f10faUL, 0x71f8ac42UL,
- 0xc8c07bdfUL, 0xada7c767UL, 0x43087275UL, 0x266fcecdUL, 0x707fad95UL,
- 0x1518112dUL, 0xfbb7a43fUL, 0x9ed01887UL, 0x27e8cf1aUL, 0x428f73a2UL,
- 0xac20c6b0UL, 0xc9477a08UL, 0x3eaf32a0UL, 0x5bc88e18UL, 0xb5673b0aUL,
- 0xd00087b2UL, 0x6938502fUL, 0x0c5fec97UL, 0xe2f05985UL, 0x8797e53dUL,
- 0xd1878665UL, 0xb4e03addUL, 0x5a4f8fcfUL, 0x3f283377UL, 0x8610e4eaUL,
- 0xe3775852UL, 0x0dd8ed40UL, 0x68bf51f8UL, 0xa1f82bf0UL, 0xc49f9748UL,
- 0x2a30225aUL, 0x4f579ee2UL, 0xf66f497fUL, 0x9308f5c7UL, 0x7da740d5UL,
- 0x18c0fc6dUL, 0x4ed09f35UL, 0x2bb7238dUL, 0xc518969fUL, 0xa07f2a27UL,
- 0x1947fdbaUL, 0x7c204102UL, 0x928ff410UL, 0xf7e848a8UL, 0x3d58149bUL,
- 0x583fa823UL, 0xb6901d31UL, 0xd3f7a189UL, 0x6acf7614UL, 0x0fa8caacUL,
- 0xe1077fbeUL, 0x8460c306UL, 0xd270a05eUL, 0xb7171ce6UL, 0x59b8a9f4UL,
- 0x3cdf154cUL, 0x85e7c2d1UL, 0xe0807e69UL, 0x0e2fcb7bUL, 0x6b4877c3UL,
- 0xa20f0dcbUL, 0xc768b173UL, 0x29c70461UL, 0x4ca0b8d9UL, 0xf5986f44UL,
- 0x90ffd3fcUL, 0x7e5066eeUL, 0x1b37da56UL, 0x4d27b90eUL, 0x284005b6UL,
- 0xc6efb0a4UL, 0xa3880c1cUL, 0x1ab0db81UL, 0x7fd76739UL, 0x9178d22bUL,
- 0xf41f6e93UL, 0x03f7263bUL, 0x66909a83UL, 0x883f2f91UL, 0xed589329UL,
- 0x546044b4UL, 0x3107f80cUL, 0xdfa84d1eUL, 0xbacff1a6UL, 0xecdf92feUL,
- 0x89b82e46UL, 0x67179b54UL, 0x027027ecUL, 0xbb48f071UL, 0xde2f4cc9UL,
- 0x3080f9dbUL, 0x55e74563UL, 0x9ca03f6bUL, 0xf9c783d3UL, 0x176836c1UL,
- 0x720f8a79UL, 0xcb375de4UL, 0xae50e15cUL, 0x40ff544eUL, 0x2598e8f6UL,
- 0x73888baeUL, 0x16ef3716UL, 0xf8408204UL, 0x9d273ebcUL, 0x241fe921UL,
- 0x41785599UL, 0xafd7e08bUL, 0xcab05c33UL, 0x3bb659edUL, 0x5ed1e555UL,
- 0xb07e5047UL, 0xd519ecffUL, 0x6c213b62UL, 0x094687daUL, 0xe7e932c8UL,
- 0x828e8e70UL, 0xd49eed28UL, 0xb1f95190UL, 0x5f56e482UL, 0x3a31583aUL,
- 0x83098fa7UL, 0xe66e331fUL, 0x08c1860dUL, 0x6da63ab5UL, 0xa4e140bdUL,
- 0xc186fc05UL, 0x2f294917UL, 0x4a4ef5afUL, 0xf3762232UL, 0x96119e8aUL,
- 0x78be2b98UL, 0x1dd99720UL, 0x4bc9f478UL, 0x2eae48c0UL, 0xc001fdd2UL,
- 0xa566416aUL, 0x1c5e96f7UL, 0x79392a4fUL, 0x97969f5dUL, 0xf2f123e5UL,
- 0x05196b4dUL, 0x607ed7f5UL, 0x8ed162e7UL, 0xebb6de5fUL, 0x528e09c2UL,
- 0x37e9b57aUL, 0xd9460068UL, 0xbc21bcd0UL, 0xea31df88UL, 0x8f566330UL,
- 0x61f9d622UL, 0x049e6a9aUL, 0xbda6bd07UL, 0xd8c101bfUL, 0x366eb4adUL,
- 0x53090815UL, 0x9a4e721dUL, 0xff29cea5UL, 0x11867bb7UL, 0x74e1c70fUL,
- 0xcdd91092UL, 0xa8beac2aUL, 0x46111938UL, 0x2376a580UL, 0x7566c6d8UL,
- 0x10017a60UL, 0xfeaecf72UL, 0x9bc973caUL, 0x22f1a457UL, 0x479618efUL,
- 0xa939adfdUL, 0xcc5e1145UL, 0x06ee4d76UL, 0x6389f1ceUL, 0x8d2644dcUL,
- 0xe841f864UL, 0x51792ff9UL, 0x341e9341UL, 0xdab12653UL, 0xbfd69aebUL,
- 0xe9c6f9b3UL, 0x8ca1450bUL, 0x620ef019UL, 0x07694ca1UL, 0xbe519b3cUL,
- 0xdb362784UL, 0x35999296UL, 0x50fe2e2eUL, 0x99b95426UL, 0xfcdee89eUL,
- 0x12715d8cUL, 0x7716e134UL, 0xce2e36a9UL, 0xab498a11UL, 0x45e63f03UL,
- 0x208183bbUL, 0x7691e0e3UL, 0x13f65c5bUL, 0xfd59e949UL, 0x983e55f1UL,
- 0x2106826cUL, 0x44613ed4UL, 0xaace8bc6UL, 0xcfa9377eUL, 0x38417fd6UL,
- 0x5d26c36eUL, 0xb389767cUL, 0xd6eecac4UL, 0x6fd61d59UL, 0x0ab1a1e1UL,
- 0xe41e14f3UL, 0x8179a84bUL, 0xd769cb13UL, 0xb20e77abUL, 0x5ca1c2b9UL,
- 0x39c67e01UL, 0x80fea99cUL, 0xe5991524UL, 0x0b36a036UL, 0x6e511c8eUL,
- 0xa7166686UL, 0xc271da3eUL, 0x2cde6f2cUL, 0x49b9d394UL, 0xf0810409UL,
- 0x95e6b8b1UL, 0x7b490da3UL, 0x1e2eb11bUL, 0x483ed243UL, 0x2d596efbUL,
- 0xc3f6dbe9UL, 0xa6916751UL, 0x1fa9b0ccUL, 0x7ace0c74UL, 0x9461b966UL,
- 0xf10605deUL
-#endif
- }
-};
+++ /dev/null
-/* deflate.c -- compress data using the deflation algorithm
- * Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * ALGORITHM
- *
- * The "deflation" process depends on being able to identify portions
- * of the input text which are identical to earlier input (within a
- * sliding window trailing behind the input currently being processed).
- *
- * The most straightforward technique turns out to be the fastest for
- * most input files: try all possible matches and select the longest.
- * The key feature of this algorithm is that insertions into the string
- * dictionary are very simple and thus fast, and deletions are avoided
- * completely. Insertions are performed at each input character, whereas
- * string matches are performed only when the previous match ends. So it
- * is preferable to spend more time in matches to allow very fast string
- * insertions and avoid deletions. The matching algorithm for small
- * strings is inspired from that of Rabin & Karp. A brute force approach
- * is used to find longer strings when a small match has been found.
- * A similar algorithm is used in comic (by Jan-Mark Wams) and freeze
- * (by Leonid Broukhis).
- * A previous version of this file used a more sophisticated algorithm
- * (by Fiala and Greene) which is guaranteed to run in linear amortized
- * time, but has a larger average cost, uses more memory and is patented.
- * However the F&G algorithm may be faster for some highly redundant
- * files if the parameter max_chain_length (described below) is too large.
- *
- * ACKNOWLEDGEMENTS
- *
- * The idea of lazy evaluation of matches is due to Jan-Mark Wams, and
- * I found it in 'freeze' written by Leonid Broukhis.
- * Thanks to many people for bug reports and testing.
- *
- * REFERENCES
- *
- * Deutsch, L.P.,"DEFLATE Compressed Data Format Specification".
- * Available in http://tools.ietf.org/html/rfc1951
- *
- * A description of the Rabin and Karp algorithm is given in the book
- * "Algorithms" by R. Sedgewick, Addison-Wesley, p252.
- *
- * Fiala,E.R., and Greene,D.H.
- * Data Compression with Finite Windows, Comm.ACM, 32,4 (1989) 490-595
- *
- */
-
-/* @(#) $Id$ */
-
-#include "deflate.h"
-
-const char deflate_copyright[] =
- " deflate 1.2.8 Copyright 1995-2013 Jean-loup Gailly and Mark Adler ";
-/*
- If you use the zlib library in a product, an acknowledgment is welcome
- in the documentation of your product. If for some reason you cannot
- include such an acknowledgment, I would appreciate that you keep this
- copyright string in the executable of your product.
- */
-
-/* ===========================================================================
- * Function prototypes.
- */
-typedef enum {
- need_more, /* block not completed, need more input or more output */
- block_done, /* block flush performed */
- finish_started, /* finish started, need only more output at next deflate */
- finish_done /* finish done, accept no more input or output */
-} block_state;
-
-typedef block_state (*compress_func) OF((deflate_state *s, int flush));
-/* Compression function. Returns the block state after the call. */
-
-local void fill_window OF((deflate_state *s));
-local block_state deflate_stored OF((deflate_state *s, int flush));
-local block_state deflate_fast OF((deflate_state *s, int flush));
-#ifndef FASTEST
-local block_state deflate_slow OF((deflate_state *s, int flush));
-#endif
-local block_state deflate_rle OF((deflate_state *s, int flush));
-local block_state deflate_huff OF((deflate_state *s, int flush));
-local void lm_init OF((deflate_state *s));
-local void putShortMSB OF((deflate_state *s, uInt b));
-local void flush_pending OF((z_streamp strm));
-local int read_buf OF((z_streamp strm, Bytef *buf, unsigned size));
-#ifdef ASMV
- void match_init OF((void)); /* asm code initialization */
- uInt longest_match OF((deflate_state *s, IPos cur_match));
-#else
-local uInt longest_match OF((deflate_state *s, IPos cur_match));
-#endif
-
-#ifdef DEBUG
-local void check_match OF((deflate_state *s, IPos start, IPos match,
- int length));
-#endif
-
-/* ===========================================================================
- * Local data
- */
-
-#define NIL 0
-/* Tail of hash chains */
-
-#ifndef TOO_FAR
-# define TOO_FAR 4096
-#endif
-/* Matches of length 3 are discarded if their distance exceeds TOO_FAR */
-
-/* Values for max_lazy_match, good_match and max_chain_length, depending on
- * the desired pack level (0..9). The values given below have been tuned to
- * exclude worst case performance for pathological files. Better values may be
- * found for specific files.
- */
-typedef struct config_s {
- ush good_length; /* reduce lazy search above this match length */
- ush max_lazy; /* do not perform lazy search above this match length */
- ush nice_length; /* quit search above this match length */
- ush max_chain;
- compress_func func;
-} config;
-
-#ifdef FASTEST
-local const config configuration_table[2] = {
-/* good lazy nice chain */
-/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
-/* 1 */ {4, 4, 8, 4, deflate_fast}}; /* max speed, no lazy matches */
-#else
-local const config configuration_table[10] = {
-/* good lazy nice chain */
-/* 0 */ {0, 0, 0, 0, deflate_stored}, /* store only */
-/* 1 */ {4, 4, 8, 4, deflate_fast}, /* max speed, no lazy matches */
-/* 2 */ {4, 5, 16, 8, deflate_fast},
-/* 3 */ {4, 6, 32, 32, deflate_fast},
-
-/* 4 */ {4, 4, 16, 16, deflate_slow}, /* lazy matches */
-/* 5 */ {8, 16, 32, 32, deflate_slow},
-/* 6 */ {8, 16, 128, 128, deflate_slow},
-/* 7 */ {8, 32, 128, 256, deflate_slow},
-/* 8 */ {32, 128, 258, 1024, deflate_slow},
-/* 9 */ {32, 258, 258, 4096, deflate_slow}}; /* max compression */
-#endif
-
-/* Note: the deflate() code requires max_lazy >= MIN_MATCH and max_chain >= 4
- * For deflate_fast() (levels <= 3) good is ignored and lazy has a different
- * meaning.
- */
-
-#define EQUAL 0
-/* result of memcmp for equal strings */
-
-#ifndef NO_DUMMY_DECL
-struct static_tree_desc_s {int dummy;}; /* for buggy compilers */
-#endif
-
-/* rank Z_BLOCK between Z_NO_FLUSH and Z_PARTIAL_FLUSH */
-#define RANK(f) (((f) << 1) - ((f) > 4 ? 9 : 0))
-
-/* ===========================================================================
- * Update a hash value with the given input byte
- * IN assertion: all calls to to UPDATE_HASH are made with consecutive
- * input characters, so that a running hash key can be computed from the
- * previous key instead of complete recalculation each time.
- */
-#define UPDATE_HASH(s,h,c) (h = (((h)<<s->hash_shift) ^ (c)) & s->hash_mask)
-
-
-/* ===========================================================================
- * Insert string str in the dictionary and set match_head to the previous head
- * of the hash chain (the most recent string with same hash key). Return
- * the previous length of the hash chain.
- * If this file is compiled with -DFASTEST, the compression level is forced
- * to 1, and no hash chains are maintained.
- * IN assertion: all calls to to INSERT_STRING are made with consecutive
- * input characters and the first MIN_MATCH bytes of str are valid
- * (except for the last MIN_MATCH-1 bytes of the input file).
- */
-#ifdef FASTEST
-#define INSERT_STRING(s, str, match_head) \
- (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
- match_head = s->head[s->ins_h], \
- s->head[s->ins_h] = (Pos)(str))
-#else
-#define INSERT_STRING(s, str, match_head) \
- (UPDATE_HASH(s, s->ins_h, s->window[(str) + (MIN_MATCH-1)]), \
- match_head = s->prev[(str) & s->w_mask] = s->head[s->ins_h], \
- s->head[s->ins_h] = (Pos)(str))
-#endif
-
-/* ===========================================================================
- * Initialize the hash table (avoiding 64K overflow for 16 bit systems).
- * prev[] will be initialized on the fly.
- */
-#define CLEAR_HASH(s) \
- s->head[s->hash_size-1] = NIL; \
- zmemzero((Bytef *)s->head, (unsigned)(s->hash_size-1)*sizeof(*s->head));
-
-/* ========================================================================= */
-int ZEXPORT deflateInit_(strm, level, version, stream_size)
- z_streamp strm;
- int level;
- const char *version;
- int stream_size;
-{
- return deflateInit2_(strm, level, Z_DEFLATED, MAX_WBITS, DEF_MEM_LEVEL,
- Z_DEFAULT_STRATEGY, version, stream_size);
- /* To do: ignore strm->next_in if we use it as window */
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateInit2_(strm, level, method, windowBits, memLevel, strategy,
- version, stream_size)
- z_streamp strm;
- int level;
- int method;
- int windowBits;
- int memLevel;
- int strategy;
- const char *version;
- int stream_size;
-{
- deflate_state *s;
- int wrap = 1;
- static const char my_version[] = ZLIB_VERSION;
-
- ushf *overlay;
- /* We overlay pending_buf and d_buf+l_buf. This works since the average
- * output size for (length,distance) codes is <= 24 bits.
- */
-
- if (version == Z_NULL || version[0] != my_version[0] ||
- stream_size != sizeof(z_stream)) {
- return Z_VERSION_ERROR;
- }
- if (strm == Z_NULL) return Z_STREAM_ERROR;
-
- strm->msg = Z_NULL;
- if (strm->zalloc == (alloc_func)0) {
-#ifdef Z_SOLO
- return Z_STREAM_ERROR;
-#else
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
-#endif
- }
- if (strm->zfree == (free_func)0)
-#ifdef Z_SOLO
- return Z_STREAM_ERROR;
-#else
- strm->zfree = zcfree;
-#endif
-
-#ifdef FASTEST
- if (level != 0) level = 1;
-#else
- if (level == Z_DEFAULT_COMPRESSION) level = 6;
-#endif
-
- if (windowBits < 0) { /* suppress zlib wrapper */
- wrap = 0;
- windowBits = -windowBits;
- }
-#ifdef GZIP
- else if (windowBits > 15) {
- wrap = 2; /* write gzip wrapper instead */
- windowBits -= 16;
- }
-#endif
- if (memLevel < 1 || memLevel > MAX_MEM_LEVEL || method != Z_DEFLATED ||
- windowBits < 8 || windowBits > 15 || level < 0 || level > 9 ||
- strategy < 0 || strategy > Z_FIXED) {
- return Z_STREAM_ERROR;
- }
- if (windowBits == 8) windowBits = 9; /* until 256-byte window bug fixed */
- s = (deflate_state *) ZALLOC(strm, 1, sizeof(deflate_state));
- if (s == Z_NULL) return Z_MEM_ERROR;
- strm->state = (struct internal_state FAR *)s;
- s->strm = strm;
-
- s->wrap = wrap;
- s->gzhead = Z_NULL;
- s->w_bits = windowBits;
- s->w_size = 1 << s->w_bits;
- s->w_mask = s->w_size - 1;
-
- s->hash_bits = memLevel + 7;
- s->hash_size = 1 << s->hash_bits;
- s->hash_mask = s->hash_size - 1;
- s->hash_shift = ((s->hash_bits+MIN_MATCH-1)/MIN_MATCH);
-
- s->window = (Bytef *) ZALLOC(strm, s->w_size, 2*sizeof(Byte));
- s->prev = (Posf *) ZALLOC(strm, s->w_size, sizeof(Pos));
- s->head = (Posf *) ZALLOC(strm, s->hash_size, sizeof(Pos));
-
- s->high_water = 0; /* nothing written to s->window yet */
-
- s->lit_bufsize = 1 << (memLevel + 6); /* 16K elements by default */
-
- overlay = (ushf *) ZALLOC(strm, s->lit_bufsize, sizeof(ush)+2);
- s->pending_buf = (uchf *) overlay;
- s->pending_buf_size = (ulg)s->lit_bufsize * (sizeof(ush)+2L);
-
- if (s->window == Z_NULL || s->prev == Z_NULL || s->head == Z_NULL ||
- s->pending_buf == Z_NULL) {
- s->status = FINISH_STATE;
- strm->msg = ERR_MSG(Z_MEM_ERROR);
- deflateEnd (strm);
- return Z_MEM_ERROR;
- }
- s->d_buf = overlay + s->lit_bufsize/sizeof(ush);
- s->l_buf = s->pending_buf + (1+sizeof(ush))*s->lit_bufsize;
-
- s->level = level;
- s->strategy = strategy;
- s->method = (Byte)method;
-
- return deflateReset(strm);
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateSetDictionary (strm, dictionary, dictLength)
- z_streamp strm;
- const Bytef *dictionary;
- uInt dictLength;
-{
- deflate_state *s;
- uInt str, n;
- int wrap;
- unsigned avail;
- z_const unsigned char *next;
-
- if (strm == Z_NULL || strm->state == Z_NULL || dictionary == Z_NULL)
- return Z_STREAM_ERROR;
- s = strm->state;
- wrap = s->wrap;
- if (wrap == 2 || (wrap == 1 && s->status != INIT_STATE) || s->lookahead)
- return Z_STREAM_ERROR;
-
- /* when using zlib wrappers, compute Adler-32 for provided dictionary */
- if (wrap == 1)
- strm->adler = adler32(strm->adler, dictionary, dictLength);
- s->wrap = 0; /* avoid computing Adler-32 in read_buf */
-
- /* if dictionary would fill window, just replace the history */
- if (dictLength >= s->w_size) {
- if (wrap == 0) { /* already empty otherwise */
- CLEAR_HASH(s);
- s->strstart = 0;
- s->block_start = 0L;
- s->insert = 0;
- }
- dictionary += dictLength - s->w_size; /* use the tail */
- dictLength = s->w_size;
- }
-
- /* insert dictionary into window and hash */
- avail = strm->avail_in;
- next = strm->next_in;
- strm->avail_in = dictLength;
- strm->next_in = (z_const Bytef *)dictionary;
- fill_window(s);
- while (s->lookahead >= MIN_MATCH) {
- str = s->strstart;
- n = s->lookahead - (MIN_MATCH-1);
- do {
- UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
-#ifndef FASTEST
- s->prev[str & s->w_mask] = s->head[s->ins_h];
-#endif
- s->head[s->ins_h] = (Pos)str;
- str++;
- } while (--n);
- s->strstart = str;
- s->lookahead = MIN_MATCH-1;
- fill_window(s);
- }
- s->strstart += s->lookahead;
- s->block_start = (long)s->strstart;
- s->insert = s->lookahead;
- s->lookahead = 0;
- s->match_length = s->prev_length = MIN_MATCH-1;
- s->match_available = 0;
- strm->next_in = next;
- strm->avail_in = avail;
- s->wrap = wrap;
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateResetKeep (strm)
- z_streamp strm;
-{
- deflate_state *s;
-
- if (strm == Z_NULL || strm->state == Z_NULL ||
- strm->zalloc == (alloc_func)0 || strm->zfree == (free_func)0) {
- return Z_STREAM_ERROR;
- }
-
- strm->total_in = strm->total_out = 0;
- strm->msg = Z_NULL; /* use zfree if we ever allocate msg dynamically */
- strm->data_type = Z_UNKNOWN;
-
- s = (deflate_state *)strm->state;
- s->pending = 0;
- s->pending_out = s->pending_buf;
-
- if (s->wrap < 0) {
- s->wrap = -s->wrap; /* was made negative by deflate(..., Z_FINISH); */
- }
- s->status = s->wrap ? INIT_STATE : BUSY_STATE;
- strm->adler =
-#ifdef GZIP
- s->wrap == 2 ? crc32(0L, Z_NULL, 0) :
-#endif
- adler32(0L, Z_NULL, 0);
- s->last_flush = Z_NO_FLUSH;
-
- _tr_init(s);
-
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateReset (strm)
- z_streamp strm;
-{
- int ret;
-
- ret = deflateResetKeep(strm);
- if (ret == Z_OK)
- lm_init(strm->state);
- return ret;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateSetHeader (strm, head)
- z_streamp strm;
- gz_headerp head;
-{
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- if (strm->state->wrap != 2) return Z_STREAM_ERROR;
- strm->state->gzhead = head;
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflatePending (strm, pending, bits)
- unsigned *pending;
- int *bits;
- z_streamp strm;
-{
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- if (pending != Z_NULL)
- *pending = strm->state->pending;
- if (bits != Z_NULL)
- *bits = strm->state->bi_valid;
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflatePrime (strm, bits, value)
- z_streamp strm;
- int bits;
- int value;
-{
- deflate_state *s;
- int put;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- s = strm->state;
- if ((Bytef *)(s->d_buf) < s->pending_out + ((Buf_size + 7) >> 3))
- return Z_BUF_ERROR;
- do {
- put = Buf_size - s->bi_valid;
- if (put > bits)
- put = bits;
- s->bi_buf |= (ush)((value & ((1 << put) - 1)) << s->bi_valid);
- s->bi_valid += put;
- _tr_flush_bits(s);
- value >>= put;
- bits -= put;
- } while (bits);
- return Z_OK;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateParams(strm, level, strategy)
- z_streamp strm;
- int level;
- int strategy;
-{
- deflate_state *s;
- compress_func func;
- int err = Z_OK;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- s = strm->state;
-
-#ifdef FASTEST
- if (level != 0) level = 1;
-#else
- if (level == Z_DEFAULT_COMPRESSION) level = 6;
-#endif
- if (level < 0 || level > 9 || strategy < 0 || strategy > Z_FIXED) {
- return Z_STREAM_ERROR;
- }
- func = configuration_table[s->level].func;
-
- if ((strategy != s->strategy || func != configuration_table[level].func) &&
- strm->total_in != 0) {
- /* Flush the last buffer: */
- err = deflate(strm, Z_BLOCK);
- if (err == Z_BUF_ERROR && s->pending == 0)
- err = Z_OK;
- }
- if (s->level != level) {
- s->level = level;
- s->max_lazy_match = configuration_table[level].max_lazy;
- s->good_match = configuration_table[level].good_length;
- s->nice_match = configuration_table[level].nice_length;
- s->max_chain_length = configuration_table[level].max_chain;
- }
- s->strategy = strategy;
- return err;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateTune(strm, good_length, max_lazy, nice_length, max_chain)
- z_streamp strm;
- int good_length;
- int max_lazy;
- int nice_length;
- int max_chain;
-{
- deflate_state *s;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- s = strm->state;
- s->good_match = good_length;
- s->max_lazy_match = max_lazy;
- s->nice_match = nice_length;
- s->max_chain_length = max_chain;
- return Z_OK;
-}
-
-/* =========================================================================
- * For the default windowBits of 15 and memLevel of 8, this function returns
- * a close to exact, as well as small, upper bound on the compressed size.
- * They are coded as constants here for a reason--if the #define's are
- * changed, then this function needs to be changed as well. The return
- * value for 15 and 8 only works for those exact settings.
- *
- * For any setting other than those defaults for windowBits and memLevel,
- * the value returned is a conservative worst case for the maximum expansion
- * resulting from using fixed blocks instead of stored blocks, which deflate
- * can emit on compressed data for some combinations of the parameters.
- *
- * This function could be more sophisticated to provide closer upper bounds for
- * every combination of windowBits and memLevel. But even the conservative
- * upper bound of about 14% expansion does not seem onerous for output buffer
- * allocation.
- */
-uLong ZEXPORT deflateBound(strm, sourceLen)
- z_streamp strm;
- uLong sourceLen;
-{
- deflate_state *s;
- uLong complen, wraplen;
- Bytef *str;
-
- /* conservative upper bound for compressed data */
- complen = sourceLen +
- ((sourceLen + 7) >> 3) + ((sourceLen + 63) >> 6) + 5;
-
- /* if can't get parameters, return conservative bound plus zlib wrapper */
- if (strm == Z_NULL || strm->state == Z_NULL)
- return complen + 6;
-
- /* compute wrapper length */
- s = strm->state;
- switch (s->wrap) {
- case 0: /* raw deflate */
- wraplen = 0;
- break;
- case 1: /* zlib wrapper */
- wraplen = 6 + (s->strstart ? 4 : 0);
- break;
- case 2: /* gzip wrapper */
- wraplen = 18;
- if (s->gzhead != Z_NULL) { /* user-supplied gzip header */
- if (s->gzhead->extra != Z_NULL)
- wraplen += 2 + s->gzhead->extra_len;
- str = s->gzhead->name;
- if (str != Z_NULL)
- do {
- wraplen++;
- } while (*str++);
- str = s->gzhead->comment;
- if (str != Z_NULL)
- do {
- wraplen++;
- } while (*str++);
- if (s->gzhead->hcrc)
- wraplen += 2;
- }
- break;
- default: /* for compiler happiness */
- wraplen = 6;
- }
-
- /* if not default parameters, return conservative bound */
- if (s->w_bits != 15 || s->hash_bits != 8 + 7)
- return complen + wraplen;
-
- /* default settings: return tight bound for that case */
- return sourceLen + (sourceLen >> 12) + (sourceLen >> 14) +
- (sourceLen >> 25) + 13 - 6 + wraplen;
-}
-
-/* =========================================================================
- * Put a short in the pending buffer. The 16-bit value is put in MSB order.
- * IN assertion: the stream state is correct and there is enough room in
- * pending_buf.
- */
-local void putShortMSB (s, b)
- deflate_state *s;
- uInt b;
-{
- put_byte(s, (Byte)(b >> 8));
- put_byte(s, (Byte)(b & 0xff));
-}
-
-/* =========================================================================
- * Flush as much pending output as possible. All deflate() output goes
- * through this function so some applications may wish to modify it
- * to avoid allocating a large strm->next_out buffer and copying into it.
- * (See also read_buf()).
- */
-local void flush_pending(strm)
- z_streamp strm;
-{
- unsigned len;
- deflate_state *s = strm->state;
-
- _tr_flush_bits(s);
- len = s->pending;
- if (len > strm->avail_out) len = strm->avail_out;
- if (len == 0) return;
-
- zmemcpy(strm->next_out, s->pending_out, len);
- strm->next_out += len;
- s->pending_out += len;
- strm->total_out += len;
- strm->avail_out -= len;
- s->pending -= len;
- if (s->pending == 0) {
- s->pending_out = s->pending_buf;
- }
-}
-
-/* ========================================================================= */
-int ZEXPORT deflate (strm, flush)
- z_streamp strm;
- int flush;
-{
- int old_flush; /* value of flush param for previous deflate call */
- deflate_state *s;
-
- if (strm == Z_NULL || strm->state == Z_NULL ||
- flush > Z_BLOCK || flush < 0) {
- return Z_STREAM_ERROR;
- }
- s = strm->state;
-
- if (strm->next_out == Z_NULL ||
- (strm->next_in == Z_NULL && strm->avail_in != 0) ||
- (s->status == FINISH_STATE && flush != Z_FINISH)) {
- ERR_RETURN(strm, Z_STREAM_ERROR);
- }
- if (strm->avail_out == 0) ERR_RETURN(strm, Z_BUF_ERROR);
-
- s->strm = strm; /* just in case */
- old_flush = s->last_flush;
- s->last_flush = flush;
-
- /* Write the header */
- if (s->status == INIT_STATE) {
-#ifdef GZIP
- if (s->wrap == 2) {
- strm->adler = crc32(0L, Z_NULL, 0);
- put_byte(s, 31);
- put_byte(s, 139);
- put_byte(s, 8);
- if (s->gzhead == Z_NULL) {
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, 0);
- put_byte(s, s->level == 9 ? 2 :
- (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
- 4 : 0));
- put_byte(s, OS_CODE);
- s->status = BUSY_STATE;
- }
- else {
- put_byte(s, (s->gzhead->text ? 1 : 0) +
- (s->gzhead->hcrc ? 2 : 0) +
- (s->gzhead->extra == Z_NULL ? 0 : 4) +
- (s->gzhead->name == Z_NULL ? 0 : 8) +
- (s->gzhead->comment == Z_NULL ? 0 : 16)
- );
- put_byte(s, (Byte)(s->gzhead->time & 0xff));
- put_byte(s, (Byte)((s->gzhead->time >> 8) & 0xff));
- put_byte(s, (Byte)((s->gzhead->time >> 16) & 0xff));
- put_byte(s, (Byte)((s->gzhead->time >> 24) & 0xff));
- put_byte(s, s->level == 9 ? 2 :
- (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2 ?
- 4 : 0));
- put_byte(s, s->gzhead->os & 0xff);
- if (s->gzhead->extra != Z_NULL) {
- put_byte(s, s->gzhead->extra_len & 0xff);
- put_byte(s, (s->gzhead->extra_len >> 8) & 0xff);
- }
- if (s->gzhead->hcrc)
- strm->adler = crc32(strm->adler, s->pending_buf,
- s->pending);
- s->gzindex = 0;
- s->status = EXTRA_STATE;
- }
- }
- else
-#endif
- {
- uInt header = (Z_DEFLATED + ((s->w_bits-8)<<4)) << 8;
- uInt level_flags;
-
- if (s->strategy >= Z_HUFFMAN_ONLY || s->level < 2)
- level_flags = 0;
- else if (s->level < 6)
- level_flags = 1;
- else if (s->level == 6)
- level_flags = 2;
- else
- level_flags = 3;
- header |= (level_flags << 6);
- if (s->strstart != 0) header |= PRESET_DICT;
- header += 31 - (header % 31);
-
- s->status = BUSY_STATE;
- putShortMSB(s, header);
-
- /* Save the adler32 of the preset dictionary: */
- if (s->strstart != 0) {
- putShortMSB(s, (uInt)(strm->adler >> 16));
- putShortMSB(s, (uInt)(strm->adler & 0xffff));
- }
- strm->adler = adler32(0L, Z_NULL, 0);
- }
- }
-#ifdef GZIP
- if (s->status == EXTRA_STATE) {
- if (s->gzhead->extra != Z_NULL) {
- uInt beg = s->pending; /* start of bytes to update crc */
-
- while (s->gzindex < (s->gzhead->extra_len & 0xffff)) {
- if (s->pending == s->pending_buf_size) {
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- flush_pending(strm);
- beg = s->pending;
- if (s->pending == s->pending_buf_size)
- break;
- }
- put_byte(s, s->gzhead->extra[s->gzindex]);
- s->gzindex++;
- }
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- if (s->gzindex == s->gzhead->extra_len) {
- s->gzindex = 0;
- s->status = NAME_STATE;
- }
- }
- else
- s->status = NAME_STATE;
- }
- if (s->status == NAME_STATE) {
- if (s->gzhead->name != Z_NULL) {
- uInt beg = s->pending; /* start of bytes to update crc */
- int val;
-
- do {
- if (s->pending == s->pending_buf_size) {
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- flush_pending(strm);
- beg = s->pending;
- if (s->pending == s->pending_buf_size) {
- val = 1;
- break;
- }
- }
- val = s->gzhead->name[s->gzindex++];
- put_byte(s, val);
- } while (val != 0);
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- if (val == 0) {
- s->gzindex = 0;
- s->status = COMMENT_STATE;
- }
- }
- else
- s->status = COMMENT_STATE;
- }
- if (s->status == COMMENT_STATE) {
- if (s->gzhead->comment != Z_NULL) {
- uInt beg = s->pending; /* start of bytes to update crc */
- int val;
-
- do {
- if (s->pending == s->pending_buf_size) {
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- flush_pending(strm);
- beg = s->pending;
- if (s->pending == s->pending_buf_size) {
- val = 1;
- break;
- }
- }
- val = s->gzhead->comment[s->gzindex++];
- put_byte(s, val);
- } while (val != 0);
- if (s->gzhead->hcrc && s->pending > beg)
- strm->adler = crc32(strm->adler, s->pending_buf + beg,
- s->pending - beg);
- if (val == 0)
- s->status = HCRC_STATE;
- }
- else
- s->status = HCRC_STATE;
- }
- if (s->status == HCRC_STATE) {
- if (s->gzhead->hcrc) {
- if (s->pending + 2 > s->pending_buf_size)
- flush_pending(strm);
- if (s->pending + 2 <= s->pending_buf_size) {
- put_byte(s, (Byte)(strm->adler & 0xff));
- put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
- strm->adler = crc32(0L, Z_NULL, 0);
- s->status = BUSY_STATE;
- }
- }
- else
- s->status = BUSY_STATE;
- }
-#endif
-
- /* Flush as much pending output as possible */
- if (s->pending != 0) {
- flush_pending(strm);
- if (strm->avail_out == 0) {
- /* Since avail_out is 0, deflate will be called again with
- * more output space, but possibly with both pending and
- * avail_in equal to zero. There won't be anything to do,
- * but this is not an error situation so make sure we
- * return OK instead of BUF_ERROR at next call of deflate:
- */
- s->last_flush = -1;
- return Z_OK;
- }
-
- /* Make sure there is something to do and avoid duplicate consecutive
- * flushes. For repeated and useless calls with Z_FINISH, we keep
- * returning Z_STREAM_END instead of Z_BUF_ERROR.
- */
- } else if (strm->avail_in == 0 && RANK(flush) <= RANK(old_flush) &&
- flush != Z_FINISH) {
- ERR_RETURN(strm, Z_BUF_ERROR);
- }
-
- /* User must not provide more input after the first FINISH: */
- if (s->status == FINISH_STATE && strm->avail_in != 0) {
- ERR_RETURN(strm, Z_BUF_ERROR);
- }
-
- /* Start a new block or continue the current one.
- */
- if (strm->avail_in != 0 || s->lookahead != 0 ||
- (flush != Z_NO_FLUSH && s->status != FINISH_STATE)) {
- block_state bstate;
-
- bstate = s->strategy == Z_HUFFMAN_ONLY ? deflate_huff(s, flush) :
- (s->strategy == Z_RLE ? deflate_rle(s, flush) :
- (*(configuration_table[s->level].func))(s, flush));
-
- if (bstate == finish_started || bstate == finish_done) {
- s->status = FINISH_STATE;
- }
- if (bstate == need_more || bstate == finish_started) {
- if (strm->avail_out == 0) {
- s->last_flush = -1; /* avoid BUF_ERROR next call, see above */
- }
- return Z_OK;
- /* If flush != Z_NO_FLUSH && avail_out == 0, the next call
- * of deflate should use the same flush parameter to make sure
- * that the flush is complete. So we don't have to output an
- * empty block here, this will be done at next call. This also
- * ensures that for a very small output buffer, we emit at most
- * one empty block.
- */
- }
- if (bstate == block_done) {
- if (flush == Z_PARTIAL_FLUSH) {
- _tr_align(s);
- } else if (flush != Z_BLOCK) { /* FULL_FLUSH or SYNC_FLUSH */
- _tr_stored_block(s, (char*)0, 0L, 0);
- /* For a full flush, this empty block will be recognized
- * as a special marker by inflate_sync().
- */
- if (flush == Z_FULL_FLUSH) {
- CLEAR_HASH(s); /* forget history */
- if (s->lookahead == 0) {
- s->strstart = 0;
- s->block_start = 0L;
- s->insert = 0;
- }
- }
- }
- flush_pending(strm);
- if (strm->avail_out == 0) {
- s->last_flush = -1; /* avoid BUF_ERROR at next call, see above */
- return Z_OK;
- }
- }
- }
- Assert(strm->avail_out > 0, "bug2");
-
- if (flush != Z_FINISH) return Z_OK;
- if (s->wrap <= 0) return Z_STREAM_END;
-
- /* Write the trailer */
-#ifdef GZIP
- if (s->wrap == 2) {
- put_byte(s, (Byte)(strm->adler & 0xff));
- put_byte(s, (Byte)((strm->adler >> 8) & 0xff));
- put_byte(s, (Byte)((strm->adler >> 16) & 0xff));
- put_byte(s, (Byte)((strm->adler >> 24) & 0xff));
- put_byte(s, (Byte)(strm->total_in & 0xff));
- put_byte(s, (Byte)((strm->total_in >> 8) & 0xff));
- put_byte(s, (Byte)((strm->total_in >> 16) & 0xff));
- put_byte(s, (Byte)((strm->total_in >> 24) & 0xff));
- }
- else
-#endif
- {
- putShortMSB(s, (uInt)(strm->adler >> 16));
- putShortMSB(s, (uInt)(strm->adler & 0xffff));
- }
- flush_pending(strm);
- /* If avail_out is zero, the application will call deflate again
- * to flush the rest.
- */
- if (s->wrap > 0) s->wrap = -s->wrap; /* write the trailer only once! */
- return s->pending != 0 ? Z_OK : Z_STREAM_END;
-}
-
-/* ========================================================================= */
-int ZEXPORT deflateEnd (strm)
- z_streamp strm;
-{
- int status;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
-
- status = strm->state->status;
- if (status != INIT_STATE &&
- status != EXTRA_STATE &&
- status != NAME_STATE &&
- status != COMMENT_STATE &&
- status != HCRC_STATE &&
- status != BUSY_STATE &&
- status != FINISH_STATE) {
- return Z_STREAM_ERROR;
- }
-
- /* Deallocate in reverse order of allocations: */
- TRY_FREE(strm, strm->state->pending_buf);
- TRY_FREE(strm, strm->state->head);
- TRY_FREE(strm, strm->state->prev);
- TRY_FREE(strm, strm->state->window);
-
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
-
- return status == BUSY_STATE ? Z_DATA_ERROR : Z_OK;
-}
-
-/* =========================================================================
- * Copy the source state to the destination state.
- * To simplify the source, this is not supported for 16-bit MSDOS (which
- * doesn't have enough memory anyway to duplicate compression states).
- */
-int ZEXPORT deflateCopy (dest, source)
- z_streamp dest;
- z_streamp source;
-{
-#ifdef MAXSEG_64K
- return Z_STREAM_ERROR;
-#else
- deflate_state *ds;
- deflate_state *ss;
- ushf *overlay;
-
-
- if (source == Z_NULL || dest == Z_NULL || source->state == Z_NULL) {
- return Z_STREAM_ERROR;
- }
-
- ss = source->state;
-
- zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
-
- ds = (deflate_state *) ZALLOC(dest, 1, sizeof(deflate_state));
- if (ds == Z_NULL) return Z_MEM_ERROR;
- dest->state = (struct internal_state FAR *) ds;
- zmemcpy((voidpf)ds, (voidpf)ss, sizeof(deflate_state));
- ds->strm = dest;
-
- ds->window = (Bytef *) ZALLOC(dest, ds->w_size, 2*sizeof(Byte));
- ds->prev = (Posf *) ZALLOC(dest, ds->w_size, sizeof(Pos));
- ds->head = (Posf *) ZALLOC(dest, ds->hash_size, sizeof(Pos));
- overlay = (ushf *) ZALLOC(dest, ds->lit_bufsize, sizeof(ush)+2);
- ds->pending_buf = (uchf *) overlay;
-
- if (ds->window == Z_NULL || ds->prev == Z_NULL || ds->head == Z_NULL ||
- ds->pending_buf == Z_NULL) {
- deflateEnd (dest);
- return Z_MEM_ERROR;
- }
- /* following zmemcpy do not work for 16-bit MSDOS */
- zmemcpy(ds->window, ss->window, ds->w_size * 2 * sizeof(Byte));
- zmemcpy((voidpf)ds->prev, (voidpf)ss->prev, ds->w_size * sizeof(Pos));
- zmemcpy((voidpf)ds->head, (voidpf)ss->head, ds->hash_size * sizeof(Pos));
- zmemcpy(ds->pending_buf, ss->pending_buf, (uInt)ds->pending_buf_size);
-
- ds->pending_out = ds->pending_buf + (ss->pending_out - ss->pending_buf);
- ds->d_buf = overlay + ds->lit_bufsize/sizeof(ush);
- ds->l_buf = ds->pending_buf + (1+sizeof(ush))*ds->lit_bufsize;
-
- ds->l_desc.dyn_tree = ds->dyn_ltree;
- ds->d_desc.dyn_tree = ds->dyn_dtree;
- ds->bl_desc.dyn_tree = ds->bl_tree;
-
- return Z_OK;
-#endif /* MAXSEG_64K */
-}
-
-/* ===========================================================================
- * Read a new buffer from the current input stream, update the adler32
- * and total number of bytes read. All deflate() input goes through
- * this function so some applications may wish to modify it to avoid
- * allocating a large strm->next_in buffer and copying from it.
- * (See also flush_pending()).
- */
-local int read_buf(strm, buf, size)
- z_streamp strm;
- Bytef *buf;
- unsigned size;
-{
- unsigned len = strm->avail_in;
-
- if (len > size) len = size;
- if (len == 0) return 0;
-
- strm->avail_in -= len;
-
- zmemcpy(buf, strm->next_in, len);
- if (strm->state->wrap == 1) {
- strm->adler = adler32(strm->adler, buf, len);
- }
-#ifdef GZIP
- else if (strm->state->wrap == 2) {
- strm->adler = crc32(strm->adler, buf, len);
- }
-#endif
- strm->next_in += len;
- strm->total_in += len;
-
- return (int)len;
-}
-
-/* ===========================================================================
- * Initialize the "longest match" routines for a new zlib stream
- */
-local void lm_init (s)
- deflate_state *s;
-{
- s->window_size = (ulg)2L*s->w_size;
-
- CLEAR_HASH(s);
-
- /* Set the default configuration parameters:
- */
- s->max_lazy_match = configuration_table[s->level].max_lazy;
- s->good_match = configuration_table[s->level].good_length;
- s->nice_match = configuration_table[s->level].nice_length;
- s->max_chain_length = configuration_table[s->level].max_chain;
-
- s->strstart = 0;
- s->block_start = 0L;
- s->lookahead = 0;
- s->insert = 0;
- s->match_length = s->prev_length = MIN_MATCH-1;
- s->match_available = 0;
- s->ins_h = 0;
-#ifndef FASTEST
-#ifdef ASMV
- match_init(); /* initialize the asm code */
-#endif
-#endif
-}
-
-#ifndef FASTEST
-/* ===========================================================================
- * Set match_start to the longest match starting at the given string and
- * return its length. Matches shorter or equal to prev_length are discarded,
- * in which case the result is equal to prev_length and match_start is
- * garbage.
- * IN assertions: cur_match is the head of the hash chain for the current
- * string (strstart) and its distance is <= MAX_DIST, and prev_length >= 1
- * OUT assertion: the match length is not greater than s->lookahead.
- */
-#ifndef ASMV
-/* For 80x86 and 680x0, an optimized version will be provided in match.asm or
- * match.S. The code will be functionally equivalent.
- */
-local uInt longest_match(s, cur_match)
- deflate_state *s;
- IPos cur_match; /* current match */
-{
- unsigned chain_length = s->max_chain_length;/* max hash chain length */
- register Bytef *scan = s->window + s->strstart; /* current string */
- register Bytef *match; /* matched string */
- register int len; /* length of current match */
- int best_len = s->prev_length; /* best match length so far */
- int nice_match = s->nice_match; /* stop if match long enough */
- IPos limit = s->strstart > (IPos)MAX_DIST(s) ?
- s->strstart - (IPos)MAX_DIST(s) : NIL;
- /* Stop when cur_match becomes <= limit. To simplify the code,
- * we prevent matches with the string of window index 0.
- */
- Posf *prev = s->prev;
- uInt wmask = s->w_mask;
-
-#ifdef UNALIGNED_OK
- /* Compare two bytes at a time. Note: this is not always beneficial.
- * Try with and without -DUNALIGNED_OK to check.
- */
- register Bytef *strend = s->window + s->strstart + MAX_MATCH - 1;
- register ush scan_start = *(ushf*)scan;
- register ush scan_end = *(ushf*)(scan+best_len-1);
-#else
- register Bytef *strend = s->window + s->strstart + MAX_MATCH;
- register Byte scan_end1 = scan[best_len-1];
- register Byte scan_end = scan[best_len];
-#endif
-
- /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
- * It is easy to get rid of this optimization if necessary.
- */
- Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
-
- /* Do not waste too much time if we already have a good match: */
- if (s->prev_length >= s->good_match) {
- chain_length >>= 2;
- }
- /* Do not look for matches beyond the end of the input. This is necessary
- * to make deflate deterministic.
- */
- if ((uInt)nice_match > s->lookahead) nice_match = s->lookahead;
-
- Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
-
- do {
- Assert(cur_match < s->strstart, "no future");
- match = s->window + cur_match;
-
- /* Skip to next match if the match length cannot increase
- * or if the match length is less than 2. Note that the checks below
- * for insufficient lookahead only occur occasionally for performance
- * reasons. Therefore uninitialized memory will be accessed, and
- * conditional jumps will be made that depend on those values.
- * However the length of the match is limited to the lookahead, so
- * the output of deflate is not affected by the uninitialized values.
- */
-#if (defined(UNALIGNED_OK) && MAX_MATCH == 258)
- /* This code assumes sizeof(unsigned short) == 2. Do not use
- * UNALIGNED_OK if your compiler uses a different size.
- */
- if (*(ushf*)(match+best_len-1) != scan_end ||
- *(ushf*)match != scan_start) continue;
-
- /* It is not necessary to compare scan[2] and match[2] since they are
- * always equal when the other bytes match, given that the hash keys
- * are equal and that HASH_BITS >= 8. Compare 2 bytes at a time at
- * strstart+3, +5, ... up to strstart+257. We check for insufficient
- * lookahead only every 4th comparison; the 128th check will be made
- * at strstart+257. If MAX_MATCH-2 is not a multiple of 8, it is
- * necessary to put more guard bytes at the end of the window, or
- * to check more often for insufficient lookahead.
- */
- Assert(scan[2] == match[2], "scan[2]?");
- scan++, match++;
- do {
- } while (*(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- *(ushf*)(scan+=2) == *(ushf*)(match+=2) &&
- scan < strend);
- /* The funny "do {}" generates better code on most compilers */
-
- /* Here, scan <= window+strstart+257 */
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
- if (*scan == *match) scan++;
-
- len = (MAX_MATCH - 1) - (int)(strend-scan);
- scan = strend - (MAX_MATCH-1);
-
-#else /* UNALIGNED_OK */
-
- if (match[best_len] != scan_end ||
- match[best_len-1] != scan_end1 ||
- *match != *scan ||
- *++match != scan[1]) continue;
-
- /* The check at best_len-1 can be removed because it will be made
- * again later. (This heuristic is not always a win.)
- * It is not necessary to compare scan[2] and match[2] since they
- * are always equal when the other bytes match, given that
- * the hash keys are equal and that HASH_BITS >= 8.
- */
- scan += 2, match++;
- Assert(*scan == *match, "match[2]?");
-
- /* We check for insufficient lookahead only every 8th comparison;
- * the 256th check will be made at strstart+258.
- */
- do {
- } while (*++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- scan < strend);
-
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
-
- len = MAX_MATCH - (int)(strend - scan);
- scan = strend - MAX_MATCH;
-
-#endif /* UNALIGNED_OK */
-
- if (len > best_len) {
- s->match_start = cur_match;
- best_len = len;
- if (len >= nice_match) break;
-#ifdef UNALIGNED_OK
- scan_end = *(ushf*)(scan+best_len-1);
-#else
- scan_end1 = scan[best_len-1];
- scan_end = scan[best_len];
-#endif
- }
- } while ((cur_match = prev[cur_match & wmask]) > limit
- && --chain_length != 0);
-
- if ((uInt)best_len <= s->lookahead) return (uInt)best_len;
- return s->lookahead;
-}
-#endif /* ASMV */
-
-#else /* FASTEST */
-
-/* ---------------------------------------------------------------------------
- * Optimized version for FASTEST only
- */
-local uInt longest_match(s, cur_match)
- deflate_state *s;
- IPos cur_match; /* current match */
-{
- register Bytef *scan = s->window + s->strstart; /* current string */
- register Bytef *match; /* matched string */
- register int len; /* length of current match */
- register Bytef *strend = s->window + s->strstart + MAX_MATCH;
-
- /* The code is optimized for HASH_BITS >= 8 and MAX_MATCH-2 multiple of 16.
- * It is easy to get rid of this optimization if necessary.
- */
- Assert(s->hash_bits >= 8 && MAX_MATCH == 258, "Code too clever");
-
- Assert((ulg)s->strstart <= s->window_size-MIN_LOOKAHEAD, "need lookahead");
-
- Assert(cur_match < s->strstart, "no future");
-
- match = s->window + cur_match;
-
- /* Return failure if the match length is less than 2:
- */
- if (match[0] != scan[0] || match[1] != scan[1]) return MIN_MATCH-1;
-
- /* The check at best_len-1 can be removed because it will be made
- * again later. (This heuristic is not always a win.)
- * It is not necessary to compare scan[2] and match[2] since they
- * are always equal when the other bytes match, given that
- * the hash keys are equal and that HASH_BITS >= 8.
- */
- scan += 2, match += 2;
- Assert(*scan == *match, "match[2]?");
-
- /* We check for insufficient lookahead only every 8th comparison;
- * the 256th check will be made at strstart+258.
- */
- do {
- } while (*++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- *++scan == *++match && *++scan == *++match &&
- scan < strend);
-
- Assert(scan <= s->window+(unsigned)(s->window_size-1), "wild scan");
-
- len = MAX_MATCH - (int)(strend - scan);
-
- if (len < MIN_MATCH) return MIN_MATCH - 1;
-
- s->match_start = cur_match;
- return (uInt)len <= s->lookahead ? (uInt)len : s->lookahead;
-}
-
-#endif /* FASTEST */
-
-#ifdef DEBUG
-/* ===========================================================================
- * Check that the match at match_start is indeed a match.
- */
-local void check_match(s, start, match, length)
- deflate_state *s;
- IPos start, match;
- int length;
-{
- /* check that the match is indeed a match */
- if (zmemcmp(s->window + match,
- s->window + start, length) != EQUAL) {
- fprintf(stderr, " start %u, match %u, length %d\n",
- start, match, length);
- do {
- fprintf(stderr, "%c%c", s->window[match++], s->window[start++]);
- } while (--length != 0);
- z_error("invalid match");
- }
- if (z_verbose > 1) {
- fprintf(stderr,"\\[%d,%d]", start-match, length);
- do { putc(s->window[start++], stderr); } while (--length != 0);
- }
-}
-#else
-# define check_match(s, start, match, length)
-#endif /* DEBUG */
-
-/* ===========================================================================
- * Fill the window when the lookahead becomes insufficient.
- * Updates strstart and lookahead.
- *
- * IN assertion: lookahead < MIN_LOOKAHEAD
- * OUT assertions: strstart <= window_size-MIN_LOOKAHEAD
- * At least one byte has been read, or avail_in == 0; reads are
- * performed for at least two bytes (required for the zip translate_eol
- * option -- not supported here).
- */
-local void fill_window(s)
- deflate_state *s;
-{
- register unsigned n, m;
- register Posf *p;
- unsigned more; /* Amount of free space at the end of the window. */
- uInt wsize = s->w_size;
-
- Assert(s->lookahead < MIN_LOOKAHEAD, "already enough lookahead");
-
- do {
- more = (unsigned)(s->window_size -(ulg)s->lookahead -(ulg)s->strstart);
-
- /* Deal with !@#$% 64K limit: */
- if (sizeof(int) <= 2) {
- if (more == 0 && s->strstart == 0 && s->lookahead == 0) {
- more = wsize;
-
- } else if (more == (unsigned)(-1)) {
- /* Very unlikely, but possible on 16 bit machine if
- * strstart == 0 && lookahead == 1 (input done a byte at time)
- */
- more--;
- }
- }
-
- /* If the window is almost full and there is insufficient lookahead,
- * move the upper half to the lower one to make room in the upper half.
- */
- if (s->strstart >= wsize+MAX_DIST(s)) {
-
- zmemcpy(s->window, s->window+wsize, (unsigned)wsize);
- s->match_start -= wsize;
- s->strstart -= wsize; /* we now have strstart >= MAX_DIST */
- s->block_start -= (long) wsize;
-
- /* Slide the hash table (could be avoided with 32 bit values
- at the expense of memory usage). We slide even when level == 0
- to keep the hash table consistent if we switch back to level > 0
- later. (Using level 0 permanently is not an optimal usage of
- zlib, so we don't care about this pathological case.)
- */
- n = s->hash_size;
- p = &s->head[n];
- do {
- m = *--p;
- *p = (Pos)(m >= wsize ? m-wsize : NIL);
- } while (--n);
-
- n = wsize;
-#ifndef FASTEST
- p = &s->prev[n];
- do {
- m = *--p;
- *p = (Pos)(m >= wsize ? m-wsize : NIL);
- /* If n is not on any hash chain, prev[n] is garbage but
- * its value will never be used.
- */
- } while (--n);
-#endif
- more += wsize;
- }
- if (s->strm->avail_in == 0) break;
-
- /* If there was no sliding:
- * strstart <= WSIZE+MAX_DIST-1 && lookahead <= MIN_LOOKAHEAD - 1 &&
- * more == window_size - lookahead - strstart
- * => more >= window_size - (MIN_LOOKAHEAD-1 + WSIZE + MAX_DIST-1)
- * => more >= window_size - 2*WSIZE + 2
- * In the BIG_MEM or MMAP case (not yet supported),
- * window_size == input_size + MIN_LOOKAHEAD &&
- * strstart + s->lookahead <= input_size => more >= MIN_LOOKAHEAD.
- * Otherwise, window_size == 2*WSIZE so more >= 2.
- * If there was sliding, more >= WSIZE. So in all cases, more >= 2.
- */
- Assert(more >= 2, "more < 2");
-
- n = read_buf(s->strm, s->window + s->strstart + s->lookahead, more);
- s->lookahead += n;
-
- /* Initialize the hash value now that we have some input: */
- if (s->lookahead + s->insert >= MIN_MATCH) {
- uInt str = s->strstart - s->insert;
- s->ins_h = s->window[str];
- UPDATE_HASH(s, s->ins_h, s->window[str + 1]);
-#if MIN_MATCH != 3
- Call UPDATE_HASH() MIN_MATCH-3 more times
-#endif
- while (s->insert) {
- UPDATE_HASH(s, s->ins_h, s->window[str + MIN_MATCH-1]);
-#ifndef FASTEST
- s->prev[str & s->w_mask] = s->head[s->ins_h];
-#endif
- s->head[s->ins_h] = (Pos)str;
- str++;
- s->insert--;
- if (s->lookahead + s->insert < MIN_MATCH)
- break;
- }
- }
- /* If the whole input has less than MIN_MATCH bytes, ins_h is garbage,
- * but this is not important since only literal bytes will be emitted.
- */
-
- } while (s->lookahead < MIN_LOOKAHEAD && s->strm->avail_in != 0);
-
- /* If the WIN_INIT bytes after the end of the current data have never been
- * written, then zero those bytes in order to avoid memory check reports of
- * the use of uninitialized (or uninitialised as Julian writes) bytes by
- * the longest match routines. Update the high water mark for the next
- * time through here. WIN_INIT is set to MAX_MATCH since the longest match
- * routines allow scanning to strstart + MAX_MATCH, ignoring lookahead.
- */
- if (s->high_water < s->window_size) {
- ulg curr = s->strstart + (ulg)(s->lookahead);
- ulg init;
-
- if (s->high_water < curr) {
- /* Previous high water mark below current data -- zero WIN_INIT
- * bytes or up to end of window, whichever is less.
- */
- init = s->window_size - curr;
- if (init > WIN_INIT)
- init = WIN_INIT;
- zmemzero(s->window + curr, (unsigned)init);
- s->high_water = curr + init;
- }
- else if (s->high_water < (ulg)curr + WIN_INIT) {
- /* High water mark at or above current data, but below current data
- * plus WIN_INIT -- zero out to current data plus WIN_INIT, or up
- * to end of window, whichever is less.
- */
- init = (ulg)curr + WIN_INIT - s->high_water;
- if (init > s->window_size - s->high_water)
- init = s->window_size - s->high_water;
- zmemzero(s->window + s->high_water, (unsigned)init);
- s->high_water += init;
- }
- }
-
- Assert((ulg)s->strstart <= s->window_size - MIN_LOOKAHEAD,
- "not enough room for search");
-}
-
-/* ===========================================================================
- * Flush the current block, with given end-of-file flag.
- * IN assertion: strstart is set to the end of the current match.
- */
-#define FLUSH_BLOCK_ONLY(s, last) { \
- _tr_flush_block(s, (s->block_start >= 0L ? \
- (charf *)&s->window[(unsigned)s->block_start] : \
- (charf *)Z_NULL), \
- (ulg)((long)s->strstart - s->block_start), \
- (last)); \
- s->block_start = s->strstart; \
- flush_pending(s->strm); \
- Tracev((stderr,"[FLUSH]")); \
-}
-
-/* Same but force premature exit if necessary. */
-#define FLUSH_BLOCK(s, last) { \
- FLUSH_BLOCK_ONLY(s, last); \
- if (s->strm->avail_out == 0) return (last) ? finish_started : need_more; \
-}
-
-/* ===========================================================================
- * Copy without compression as much as possible from the input stream, return
- * the current block state.
- * This function does not insert new strings in the dictionary since
- * uncompressible data is probably not useful. This function is used
- * only for the level=0 compression option.
- * NOTE: this function should be optimized to avoid extra copying from
- * window to pending_buf.
- */
-local block_state deflate_stored(s, flush)
- deflate_state *s;
- int flush;
-{
- /* Stored blocks are limited to 0xffff bytes, pending_buf is limited
- * to pending_buf_size, and each stored block has a 5 byte header:
- */
- ulg max_block_size = 0xffff;
- ulg max_start;
-
- if (max_block_size > s->pending_buf_size - 5) {
- max_block_size = s->pending_buf_size - 5;
- }
-
- /* Copy as much as possible from input to output: */
- for (;;) {
- /* Fill the window as much as possible: */
- if (s->lookahead <= 1) {
-
- Assert(s->strstart < s->w_size+MAX_DIST(s) ||
- s->block_start >= (long)s->w_size, "slide too late");
-
- fill_window(s);
- if (s->lookahead == 0 && flush == Z_NO_FLUSH) return need_more;
-
- if (s->lookahead == 0) break; /* flush the current block */
- }
- Assert(s->block_start >= 0L, "block gone");
-
- s->strstart += s->lookahead;
- s->lookahead = 0;
-
- /* Emit a stored block if pending_buf will be full: */
- max_start = s->block_start + max_block_size;
- if (s->strstart == 0 || (ulg)s->strstart >= max_start) {
- /* strstart == 0 is possible when wraparound on 16-bit machine */
- s->lookahead = (uInt)(s->strstart - max_start);
- s->strstart = (uInt)max_start;
- FLUSH_BLOCK(s, 0);
- }
- /* Flush if we may have to slide, otherwise block_start may become
- * negative and the data will be gone:
- */
- if (s->strstart - (uInt)s->block_start >= MAX_DIST(s)) {
- FLUSH_BLOCK(s, 0);
- }
- }
- s->insert = 0;
- if (flush == Z_FINISH) {
- FLUSH_BLOCK(s, 1);
- return finish_done;
- }
- if ((long)s->strstart > s->block_start)
- FLUSH_BLOCK(s, 0);
- return block_done;
-}
-
-/* ===========================================================================
- * Compress as much as possible from the input stream, return the current
- * block state.
- * This function does not perform lazy evaluation of matches and inserts
- * new strings in the dictionary only for unmatched strings or for short
- * matches. It is used only for the fast compression options.
- */
-local block_state deflate_fast(s, flush)
- deflate_state *s;
- int flush;
-{
- IPos hash_head; /* head of the hash chain */
- int bflush; /* set if current block must be flushed */
-
- for (;;) {
- /* Make sure that we always have enough lookahead, except
- * at the end of the input file. We need MAX_MATCH bytes
- * for the next match, plus MIN_MATCH bytes to insert the
- * string following the next match.
- */
- if (s->lookahead < MIN_LOOKAHEAD) {
- fill_window(s);
- if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
- return need_more;
- }
- if (s->lookahead == 0) break; /* flush the current block */
- }
-
- /* Insert the string window[strstart .. strstart+2] in the
- * dictionary, and set hash_head to the head of the hash chain:
- */
- hash_head = NIL;
- if (s->lookahead >= MIN_MATCH) {
- INSERT_STRING(s, s->strstart, hash_head);
- }
-
- /* Find the longest match, discarding those <= prev_length.
- * At this point we have always match_length < MIN_MATCH
- */
- if (hash_head != NIL && s->strstart - hash_head <= MAX_DIST(s)) {
- /* To simplify the code, we prevent matches with the string
- * of window index 0 (in particular we have to avoid a match
- * of the string with itself at the start of the input file).
- */
- s->match_length = longest_match (s, hash_head);
- /* longest_match() sets match_start */
- }
- if (s->match_length >= MIN_MATCH) {
- check_match(s, s->strstart, s->match_start, s->match_length);
-
- _tr_tally_dist(s, s->strstart - s->match_start,
- s->match_length - MIN_MATCH, bflush);
-
- s->lookahead -= s->match_length;
-
- /* Insert new strings in the hash table only if the match length
- * is not too large. This saves time but degrades compression.
- */
-#ifndef FASTEST
- if (s->match_length <= s->max_insert_length &&
- s->lookahead >= MIN_MATCH) {
- s->match_length--; /* string at strstart already in table */
- do {
- s->strstart++;
- INSERT_STRING(s, s->strstart, hash_head);
- /* strstart never exceeds WSIZE-MAX_MATCH, so there are
- * always MIN_MATCH bytes ahead.
- */
- } while (--s->match_length != 0);
- s->strstart++;
- } else
-#endif
- {
- s->strstart += s->match_length;
- s->match_length = 0;
- s->ins_h = s->window[s->strstart];
- UPDATE_HASH(s, s->ins_h, s->window[s->strstart+1]);
-#if MIN_MATCH != 3
- Call UPDATE_HASH() MIN_MATCH-3 more times
-#endif
- /* If lookahead < MIN_MATCH, ins_h is garbage, but it does not
- * matter since it will be recomputed at next deflate call.
- */
- }
- } else {
- /* No match, output a literal byte */
- Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
- s->lookahead--;
- s->strstart++;
- }
- if (bflush) FLUSH_BLOCK(s, 0);
- }
- s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
- if (flush == Z_FINISH) {
- FLUSH_BLOCK(s, 1);
- return finish_done;
- }
- if (s->last_lit)
- FLUSH_BLOCK(s, 0);
- return block_done;
-}
-
-#ifndef FASTEST
-/* ===========================================================================
- * Same as above, but achieves better compression. We use a lazy
- * evaluation for matches: a match is finally adopted only if there is
- * no better match at the next window position.
- */
-local block_state deflate_slow(s, flush)
- deflate_state *s;
- int flush;
-{
- IPos hash_head; /* head of hash chain */
- int bflush; /* set if current block must be flushed */
-
- /* Process the input block. */
- for (;;) {
- /* Make sure that we always have enough lookahead, except
- * at the end of the input file. We need MAX_MATCH bytes
- * for the next match, plus MIN_MATCH bytes to insert the
- * string following the next match.
- */
- if (s->lookahead < MIN_LOOKAHEAD) {
- fill_window(s);
- if (s->lookahead < MIN_LOOKAHEAD && flush == Z_NO_FLUSH) {
- return need_more;
- }
- if (s->lookahead == 0) break; /* flush the current block */
- }
-
- /* Insert the string window[strstart .. strstart+2] in the
- * dictionary, and set hash_head to the head of the hash chain:
- */
- hash_head = NIL;
- if (s->lookahead >= MIN_MATCH) {
- INSERT_STRING(s, s->strstart, hash_head);
- }
-
- /* Find the longest match, discarding those <= prev_length.
- */
- s->prev_length = s->match_length, s->prev_match = s->match_start;
- s->match_length = MIN_MATCH-1;
-
- if (hash_head != NIL && s->prev_length < s->max_lazy_match &&
- s->strstart - hash_head <= MAX_DIST(s)) {
- /* To simplify the code, we prevent matches with the string
- * of window index 0 (in particular we have to avoid a match
- * of the string with itself at the start of the input file).
- */
- s->match_length = longest_match (s, hash_head);
- /* longest_match() sets match_start */
-
- if (s->match_length <= 5 && (s->strategy == Z_FILTERED
-#if TOO_FAR <= 32767
- || (s->match_length == MIN_MATCH &&
- s->strstart - s->match_start > TOO_FAR)
-#endif
- )) {
-
- /* If prev_match is also MIN_MATCH, match_start is garbage
- * but we will ignore the current match anyway.
- */
- s->match_length = MIN_MATCH-1;
- }
- }
- /* If there was a match at the previous step and the current
- * match is not better, output the previous match:
- */
- if (s->prev_length >= MIN_MATCH && s->match_length <= s->prev_length) {
- uInt max_insert = s->strstart + s->lookahead - MIN_MATCH;
- /* Do not insert strings in hash table beyond this. */
-
- check_match(s, s->strstart-1, s->prev_match, s->prev_length);
-
- _tr_tally_dist(s, s->strstart -1 - s->prev_match,
- s->prev_length - MIN_MATCH, bflush);
-
- /* Insert in hash table all strings up to the end of the match.
- * strstart-1 and strstart are already inserted. If there is not
- * enough lookahead, the last two strings are not inserted in
- * the hash table.
- */
- s->lookahead -= s->prev_length-1;
- s->prev_length -= 2;
- do {
- if (++s->strstart <= max_insert) {
- INSERT_STRING(s, s->strstart, hash_head);
- }
- } while (--s->prev_length != 0);
- s->match_available = 0;
- s->match_length = MIN_MATCH-1;
- s->strstart++;
-
- if (bflush) FLUSH_BLOCK(s, 0);
-
- } else if (s->match_available) {
- /* If there was no match at the previous position, output a
- * single literal. If there was a match but the current match
- * is longer, truncate the previous match to a single literal.
- */
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
- if (bflush) {
- FLUSH_BLOCK_ONLY(s, 0);
- }
- s->strstart++;
- s->lookahead--;
- if (s->strm->avail_out == 0) return need_more;
- } else {
- /* There is no previous match to compare with, wait for
- * the next step to decide.
- */
- s->match_available = 1;
- s->strstart++;
- s->lookahead--;
- }
- }
- Assert (flush != Z_NO_FLUSH, "no flush?");
- if (s->match_available) {
- Tracevv((stderr,"%c", s->window[s->strstart-1]));
- _tr_tally_lit(s, s->window[s->strstart-1], bflush);
- s->match_available = 0;
- }
- s->insert = s->strstart < MIN_MATCH-1 ? s->strstart : MIN_MATCH-1;
- if (flush == Z_FINISH) {
- FLUSH_BLOCK(s, 1);
- return finish_done;
- }
- if (s->last_lit)
- FLUSH_BLOCK(s, 0);
- return block_done;
-}
-#endif /* FASTEST */
-
-/* ===========================================================================
- * For Z_RLE, simply look for runs of bytes, generate matches only of distance
- * one. Do not maintain a hash table. (It will be regenerated if this run of
- * deflate switches away from Z_RLE.)
- */
-local block_state deflate_rle(s, flush)
- deflate_state *s;
- int flush;
-{
- int bflush; /* set if current block must be flushed */
- uInt prev; /* byte at distance one to match */
- Bytef *scan, *strend; /* scan goes up to strend for length of run */
-
- for (;;) {
- /* Make sure that we always have enough lookahead, except
- * at the end of the input file. We need MAX_MATCH bytes
- * for the longest run, plus one for the unrolled loop.
- */
- if (s->lookahead <= MAX_MATCH) {
- fill_window(s);
- if (s->lookahead <= MAX_MATCH && flush == Z_NO_FLUSH) {
- return need_more;
- }
- if (s->lookahead == 0) break; /* flush the current block */
- }
-
- /* See how many times the previous byte repeats */
- s->match_length = 0;
- if (s->lookahead >= MIN_MATCH && s->strstart > 0) {
- scan = s->window + s->strstart - 1;
- prev = *scan;
- if (prev == *++scan && prev == *++scan && prev == *++scan) {
- strend = s->window + s->strstart + MAX_MATCH;
- do {
- } while (prev == *++scan && prev == *++scan &&
- prev == *++scan && prev == *++scan &&
- prev == *++scan && prev == *++scan &&
- prev == *++scan && prev == *++scan &&
- scan < strend);
- s->match_length = MAX_MATCH - (int)(strend - scan);
- if (s->match_length > s->lookahead)
- s->match_length = s->lookahead;
- }
- Assert(scan <= s->window+(uInt)(s->window_size-1), "wild scan");
- }
-
- /* Emit match if have run of MIN_MATCH or longer, else emit literal */
- if (s->match_length >= MIN_MATCH) {
- check_match(s, s->strstart, s->strstart - 1, s->match_length);
-
- _tr_tally_dist(s, 1, s->match_length - MIN_MATCH, bflush);
-
- s->lookahead -= s->match_length;
- s->strstart += s->match_length;
- s->match_length = 0;
- } else {
- /* No match, output a literal byte */
- Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
- s->lookahead--;
- s->strstart++;
- }
- if (bflush) FLUSH_BLOCK(s, 0);
- }
- s->insert = 0;
- if (flush == Z_FINISH) {
- FLUSH_BLOCK(s, 1);
- return finish_done;
- }
- if (s->last_lit)
- FLUSH_BLOCK(s, 0);
- return block_done;
-}
-
-/* ===========================================================================
- * For Z_HUFFMAN_ONLY, do not look for matches. Do not maintain a hash table.
- * (It will be regenerated if this run of deflate switches away from Huffman.)
- */
-local block_state deflate_huff(s, flush)
- deflate_state *s;
- int flush;
-{
- int bflush; /* set if current block must be flushed */
-
- for (;;) {
- /* Make sure that we have a literal to write. */
- if (s->lookahead == 0) {
- fill_window(s);
- if (s->lookahead == 0) {
- if (flush == Z_NO_FLUSH)
- return need_more;
- break; /* flush the current block */
- }
- }
-
- /* Output a literal byte */
- s->match_length = 0;
- Tracevv((stderr,"%c", s->window[s->strstart]));
- _tr_tally_lit (s, s->window[s->strstart], bflush);
- s->lookahead--;
- s->strstart++;
- if (bflush) FLUSH_BLOCK(s, 0);
- }
- s->insert = 0;
- if (flush == Z_FINISH) {
- FLUSH_BLOCK(s, 1);
- return finish_done;
- }
- if (s->last_lit)
- FLUSH_BLOCK(s, 0);
- return block_done;
-}
+++ /dev/null
-/* deflate.h -- internal compression state
- * Copyright (C) 1995-2012 Jean-loup Gailly
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* @(#) $Id$ */
-
-#ifndef DEFLATE_H
-#define DEFLATE_H
-
-#include "zutil.h"
-
-/* define NO_GZIP when compiling if you want to disable gzip header and
- trailer creation by deflate(). NO_GZIP would be used to avoid linking in
- the crc code when it is not needed. For shared libraries, gzip encoding
- should be left enabled. */
-#ifndef NO_GZIP
-# define GZIP
-#endif
-
-/* ===========================================================================
- * Internal compression state.
- */
-
-#define LENGTH_CODES 29
-/* number of length codes, not counting the special END_BLOCK code */
-
-#define LITERALS 256
-/* number of literal bytes 0..255 */
-
-#define L_CODES (LITERALS+1+LENGTH_CODES)
-/* number of Literal or Length codes, including the END_BLOCK code */
-
-#define D_CODES 30
-/* number of distance codes */
-
-#define BL_CODES 19
-/* number of codes used to transfer the bit lengths */
-
-#define HEAP_SIZE (2*L_CODES+1)
-/* maximum heap size */
-
-#define MAX_BITS 15
-/* All codes must not exceed MAX_BITS bits */
-
-#define Buf_size 16
-/* size of bit buffer in bi_buf */
-
-#define INIT_STATE 42
-#define EXTRA_STATE 69
-#define NAME_STATE 73
-#define COMMENT_STATE 91
-#define HCRC_STATE 103
-#define BUSY_STATE 113
-#define FINISH_STATE 666
-/* Stream status */
-
-
-/* Data structure describing a single value and its code string. */
-typedef struct ct_data_s {
- union {
- ush freq; /* frequency count */
- ush code; /* bit string */
- } fc;
- union {
- ush dad; /* father node in Huffman tree */
- ush len; /* length of bit string */
- } dl;
-} FAR ct_data;
-
-#define Freq fc.freq
-#define Code fc.code
-#define Dad dl.dad
-#define Len dl.len
-
-typedef struct static_tree_desc_s static_tree_desc;
-
-typedef struct tree_desc_s {
- ct_data *dyn_tree; /* the dynamic tree */
- int max_code; /* largest code with non zero frequency */
- static_tree_desc *stat_desc; /* the corresponding static tree */
-} FAR tree_desc;
-
-typedef ush Pos;
-typedef Pos FAR Posf;
-typedef unsigned IPos;
-
-/* A Pos is an index in the character window. We use short instead of int to
- * save space in the various tables. IPos is used only for parameter passing.
- */
-
-typedef struct internal_state {
- z_streamp strm; /* pointer back to this zlib stream */
- int status; /* as the name implies */
- Bytef *pending_buf; /* output still pending */
- ulg pending_buf_size; /* size of pending_buf */
- Bytef *pending_out; /* next pending byte to output to the stream */
- uInt pending; /* nb of bytes in the pending buffer */
- int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
- gz_headerp gzhead; /* gzip header information to write */
- uInt gzindex; /* where in extra, name, or comment */
- Byte method; /* can only be DEFLATED */
- int last_flush; /* value of flush param for previous deflate call */
-
- /* used by deflate.c: */
-
- uInt w_size; /* LZ77 window size (32K by default) */
- uInt w_bits; /* log2(w_size) (8..16) */
- uInt w_mask; /* w_size - 1 */
-
- Bytef *window;
- /* Sliding window. Input bytes are read into the second half of the window,
- * and move to the first half later to keep a dictionary of at least wSize
- * bytes. With this organization, matches are limited to a distance of
- * wSize-MAX_MATCH bytes, but this ensures that IO is always
- * performed with a length multiple of the block size. Also, it limits
- * the window size to 64K, which is quite useful on MSDOS.
- * To do: use the user input buffer as sliding window.
- */
-
- ulg window_size;
- /* Actual size of window: 2*wSize, except when the user input buffer
- * is directly used as sliding window.
- */
-
- Posf *prev;
- /* Link to older string with same hash index. To limit the size of this
- * array to 64K, this link is maintained only for the last 32K strings.
- * An index in this array is thus a window index modulo 32K.
- */
-
- Posf *head; /* Heads of the hash chains or NIL. */
-
- uInt ins_h; /* hash index of string to be inserted */
- uInt hash_size; /* number of elements in hash table */
- uInt hash_bits; /* log2(hash_size) */
- uInt hash_mask; /* hash_size-1 */
-
- uInt hash_shift;
- /* Number of bits by which ins_h must be shifted at each input
- * step. It must be such that after MIN_MATCH steps, the oldest
- * byte no longer takes part in the hash key, that is:
- * hash_shift * MIN_MATCH >= hash_bits
- */
-
- long block_start;
- /* Window position at the beginning of the current output block. Gets
- * negative when the window is moved backwards.
- */
-
- uInt match_length; /* length of best match */
- IPos prev_match; /* previous match */
- int match_available; /* set if previous match exists */
- uInt strstart; /* start of string to insert */
- uInt match_start; /* start of matching string */
- uInt lookahead; /* number of valid bytes ahead in window */
-
- uInt prev_length;
- /* Length of the best match at previous step. Matches not greater than this
- * are discarded. This is used in the lazy match evaluation.
- */
-
- uInt max_chain_length;
- /* To speed up deflation, hash chains are never searched beyond this
- * length. A higher limit improves compression ratio but degrades the
- * speed.
- */
-
- uInt max_lazy_match;
- /* Attempt to find a better match only when the current match is strictly
- * smaller than this value. This mechanism is used only for compression
- * levels >= 4.
- */
-# define max_insert_length max_lazy_match
- /* Insert new strings in the hash table only if the match length is not
- * greater than this length. This saves time but degrades compression.
- * max_insert_length is used only for compression levels <= 3.
- */
-
- int level; /* compression level (1..9) */
- int strategy; /* favor or force Huffman coding*/
-
- uInt good_match;
- /* Use a faster search when the previous match is longer than this */
-
- int nice_match; /* Stop searching when current match exceeds this */
-
- /* used by trees.c: */
- /* Didn't use ct_data typedef below to suppress compiler warning */
- struct ct_data_s dyn_ltree[HEAP_SIZE]; /* literal and length tree */
- struct ct_data_s dyn_dtree[2*D_CODES+1]; /* distance tree */
- struct ct_data_s bl_tree[2*BL_CODES+1]; /* Huffman tree for bit lengths */
-
- struct tree_desc_s l_desc; /* desc. for literal tree */
- struct tree_desc_s d_desc; /* desc. for distance tree */
- struct tree_desc_s bl_desc; /* desc. for bit length tree */
-
- ush bl_count[MAX_BITS+1];
- /* number of codes at each bit length for an optimal tree */
-
- int heap[2*L_CODES+1]; /* heap used to build the Huffman trees */
- int heap_len; /* number of elements in the heap */
- int heap_max; /* element of largest frequency */
- /* The sons of heap[n] are heap[2*n] and heap[2*n+1]. heap[0] is not used.
- * The same heap array is used to build all trees.
- */
-
- uch depth[2*L_CODES+1];
- /* Depth of each subtree used as tie breaker for trees of equal frequency
- */
-
- uchf *l_buf; /* buffer for literals or lengths */
-
- uInt lit_bufsize;
- /* Size of match buffer for literals/lengths. There are 4 reasons for
- * limiting lit_bufsize to 64K:
- * - frequencies can be kept in 16 bit counters
- * - if compression is not successful for the first block, all input
- * data is still in the window so we can still emit a stored block even
- * when input comes from standard input. (This can also be done for
- * all blocks if lit_bufsize is not greater than 32K.)
- * - if compression is not successful for a file smaller than 64K, we can
- * even emit a stored file instead of a stored block (saving 5 bytes).
- * This is applicable only for zip (not gzip or zlib).
- * - creating new Huffman trees less frequently may not provide fast
- * adaptation to changes in the input data statistics. (Take for
- * example a binary file with poorly compressible code followed by
- * a highly compressible string table.) Smaller buffer sizes give
- * fast adaptation but have of course the overhead of transmitting
- * trees more frequently.
- * - I can't count above 4
- */
-
- uInt last_lit; /* running index in l_buf */
-
- ushf *d_buf;
- /* Buffer for distances. To simplify the code, d_buf and l_buf have
- * the same number of elements. To use different lengths, an extra flag
- * array would be necessary.
- */
-
- ulg opt_len; /* bit length of current block with optimal trees */
- ulg static_len; /* bit length of current block with static trees */
- uInt matches; /* number of string matches in current block */
- uInt insert; /* bytes at end of window left to insert */
-
-#ifdef DEBUG
- ulg compressed_len; /* total bit length of compressed file mod 2^32 */
- ulg bits_sent; /* bit length of compressed data sent mod 2^32 */
-#endif
-
- ush bi_buf;
- /* Output buffer. bits are inserted starting at the bottom (least
- * significant bits).
- */
- int bi_valid;
- /* Number of valid bits in bi_buf. All bits above the last valid bit
- * are always zero.
- */
-
- ulg high_water;
- /* High water mark offset in window for initialized bytes -- bytes above
- * this are set to zero in order to avoid memory check warnings when
- * longest match routines access bytes past the input. This is then
- * updated to the new high water mark.
- */
-
-} FAR deflate_state;
-
-/* Output a byte on the stream.
- * IN assertion: there is enough room in pending_buf.
- */
-#define put_byte(s, c) {s->pending_buf[s->pending++] = (c);}
-
-
-#define MIN_LOOKAHEAD (MAX_MATCH+MIN_MATCH+1)
-/* Minimum amount of lookahead, except at the end of the input file.
- * See deflate.c for comments about the MIN_MATCH+1.
- */
-
-#define MAX_DIST(s) ((s)->w_size-MIN_LOOKAHEAD)
-/* In order to simplify the code, particularly on 16 bit machines, match
- * distances are limited to MAX_DIST instead of WSIZE.
- */
-
-#define WIN_INIT MAX_MATCH
-/* Number of bytes after end of data in window to initialize in order to avoid
- memory checker errors from longest match routines */
-
- /* in trees.c */
-void ZLIB_INTERNAL _tr_init OF((deflate_state *s));
-int ZLIB_INTERNAL _tr_tally OF((deflate_state *s, unsigned dist, unsigned lc));
-void ZLIB_INTERNAL _tr_flush_block OF((deflate_state *s, charf *buf,
- ulg stored_len, int last));
-void ZLIB_INTERNAL _tr_flush_bits OF((deflate_state *s));
-void ZLIB_INTERNAL _tr_align OF((deflate_state *s));
-void ZLIB_INTERNAL _tr_stored_block OF((deflate_state *s, charf *buf,
- ulg stored_len, int last));
-
-#define d_code(dist) \
- ((dist) < 256 ? _dist_code[dist] : _dist_code[256+((dist)>>7)])
-/* Mapping from a distance to a distance code. dist is the distance - 1 and
- * must not have side effects. _dist_code[256] and _dist_code[257] are never
- * used.
- */
-
-#ifndef DEBUG
-/* Inline versions of _tr_tally for speed: */
-
-#if defined(GEN_TREES_H) || !defined(STDC)
- extern uch ZLIB_INTERNAL _length_code[];
- extern uch ZLIB_INTERNAL _dist_code[];
-#else
- extern const uch ZLIB_INTERNAL _length_code[];
- extern const uch ZLIB_INTERNAL _dist_code[];
-#endif
-
-# define _tr_tally_lit(s, c, flush) \
- { uch cc = (c); \
- s->d_buf[s->last_lit] = 0; \
- s->l_buf[s->last_lit++] = cc; \
- s->dyn_ltree[cc].Freq++; \
- flush = (s->last_lit == s->lit_bufsize-1); \
- }
-# define _tr_tally_dist(s, distance, length, flush) \
- { uch len = (length); \
- ush dist = (distance); \
- s->d_buf[s->last_lit] = dist; \
- s->l_buf[s->last_lit++] = len; \
- dist--; \
- s->dyn_ltree[_length_code[len]+LITERALS+1].Freq++; \
- s->dyn_dtree[d_code(dist)].Freq++; \
- flush = (s->last_lit == s->lit_bufsize-1); \
- }
-#else
-# define _tr_tally_lit(s, c, flush) flush = _tr_tally(s, 0, c)
-# define _tr_tally_dist(s, distance, length, flush) \
- flush = _tr_tally(s, distance, length)
-#endif
-
-#endif /* DEFLATE_H */
+++ /dev/null
-/* gzclose.c -- zlib gzclose() function
- * Copyright (C) 2004, 2010 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "gzguts.h"
-
-/* gzclose() is in a separate file so that it is linked in only if it is used.
- That way the other gzclose functions can be used instead to avoid linking in
- unneeded compression or decompression routines. */
-int ZEXPORT gzclose(file)
- gzFile file;
-{
-#ifndef NO_GZCOMPRESS
- gz_statep state;
-
- if (file == NULL)
- return Z_STREAM_ERROR;
- state = (gz_statep)file;
-
- return state->mode == GZ_READ ? gzclose_r(file) : gzclose_w(file);
-#else
- return gzclose_r(file);
-#endif
-}
+++ /dev/null
-/* gzguts.h -- zlib internal header definitions for gz* operations
- * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#ifdef _LARGEFILE64_SOURCE
-# ifndef _LARGEFILE_SOURCE
-# define _LARGEFILE_SOURCE 1
-# endif
-# ifdef _FILE_OFFSET_BITS
-# undef _FILE_OFFSET_BITS
-# endif
-#endif
-
-#ifdef HAVE_HIDDEN
-# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
-#else
-# define ZLIB_INTERNAL
-#endif
-
-#include <stdio.h>
-#include "zlib.h"
-#ifdef STDC
-# include <string.h>
-# include <stdlib.h>
-# include <limits.h>
-#endif
-#include <fcntl.h>
-
-#ifdef _WIN32
-# include <stddef.h>
-#endif
-
-#if defined(__TURBOC__) || defined(_MSC_VER) || defined(_WIN32)
-# include <io.h>
-#endif
-
-#ifdef WINAPI_FAMILY
-# define open _open
-# define read _read
-# define write _write
-# define close _close
-#endif
-
-#ifdef NO_DEFLATE /* for compatibility with old definition */
-# define NO_GZCOMPRESS
-#endif
-
-#if defined(STDC99) || (defined(__TURBOC__) && __TURBOC__ >= 0x550)
-# ifndef HAVE_VSNPRINTF
-# define HAVE_VSNPRINTF
-# endif
-#endif
-
-#if defined(__CYGWIN__)
-# ifndef HAVE_VSNPRINTF
-# define HAVE_VSNPRINTF
-# endif
-#endif
-
-#if defined(MSDOS) && defined(__BORLANDC__) && (BORLANDC > 0x410)
-# ifndef HAVE_VSNPRINTF
-# define HAVE_VSNPRINTF
-# endif
-#endif
-
-#ifndef HAVE_VSNPRINTF
-# ifdef MSDOS
-/* vsnprintf may exist on some MS-DOS compilers (DJGPP?),
- but for now we just assume it doesn't. */
-# define NO_vsnprintf
-# endif
-# ifdef __TURBOC__
-# define NO_vsnprintf
-# endif
-# ifdef WIN32
-/* In Win32, vsnprintf is available as the "non-ANSI" _vsnprintf. */
-# if !defined(vsnprintf) && !defined(NO_vsnprintf)
-# if !defined(_MSC_VER) || ( defined(_MSC_VER) && _MSC_VER < 1500 )
-# define vsnprintf _vsnprintf
-# endif
-# endif
-# endif
-# ifdef __SASC
-# define NO_vsnprintf
-# endif
-# ifdef VMS
-# define NO_vsnprintf
-# endif
-# ifdef __OS400__
-# define NO_vsnprintf
-# endif
-# ifdef __MVS__
-# define NO_vsnprintf
-# endif
-#endif
-
-/* unlike snprintf (which is required in C99, yet still not supported by
- Microsoft more than a decade later!), _snprintf does not guarantee null
- termination of the result -- however this is only used in gzlib.c where
- the result is assured to fit in the space provided */
-#ifdef _MSC_VER
-# define snprintf _snprintf
-#endif
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-/* gz* functions always use library allocation functions */
-#ifndef STDC
- extern voidp malloc OF((uInt size));
- extern void free OF((voidpf ptr));
-#endif
-
-/* get errno and strerror definition */
-#if defined UNDER_CE
-# include <windows.h>
-# define zstrerror() gz_strwinerror((DWORD)GetLastError())
-#else
-# ifndef NO_STRERROR
-# include <errno.h>
-# define zstrerror() strerror(errno)
-# else
-# define zstrerror() "stdio error (consult errno)"
-# endif
-#endif
-
-/* provide prototypes for these when building zlib without LFS */
-#if !defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
- ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
- ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
- ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
-#endif
-
-/* default memLevel */
-#if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-#else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-#endif
-
-/* default i/o buffer size -- double this for output when reading (this and
- twice this must be able to fit in an unsigned type) */
-#define GZBUFSIZE 8192
-
-/* gzip modes, also provide a little integrity check on the passed structure */
-#define GZ_NONE 0
-#define GZ_READ 7247
-#define GZ_WRITE 31153
-#define GZ_APPEND 1 /* mode set to GZ_WRITE after the file is opened */
-
-/* values for gz_state how */
-#define LOOK 0 /* look for a gzip header */
-#define COPY 1 /* copy input directly */
-#define GZIP 2 /* decompress a gzip stream */
-
-/* internal gzip file state data structure */
-typedef struct {
- /* exposed contents for gzgetc() macro */
- struct gzFile_s x; /* "x" for exposed */
- /* x.have: number of bytes available at x.next */
- /* x.next: next output data to deliver or write */
- /* x.pos: current position in uncompressed data */
- /* used for both reading and writing */
- int mode; /* see gzip modes above */
- int fd; /* file descriptor */
- char *path; /* path or fd for error messages */
- unsigned size; /* buffer size, zero if not allocated yet */
- unsigned want; /* requested buffer size, default is GZBUFSIZE */
- unsigned char *in; /* input buffer */
- unsigned char *out; /* output buffer (double-sized when reading) */
- int direct; /* 0 if processing gzip, 1 if transparent */
- /* just for reading */
- int how; /* 0: get header, 1: copy, 2: decompress */
- z_off64_t start; /* where the gzip data started, for rewinding */
- int eof; /* true if end of input file reached */
- int past; /* true if read requested past end */
- /* just for writing */
- int level; /* compression level */
- int strategy; /* compression strategy */
- /* seek request */
- z_off64_t skip; /* amount to skip (already rewound if backwards) */
- int seek; /* true if seek request pending */
- /* error information */
- int err; /* error code */
- char *msg; /* error message */
- /* zlib inflate or deflate stream */
- z_stream strm; /* stream structure in-place (not a pointer) */
-} gz_state;
-typedef gz_state FAR *gz_statep;
-
-/* shared functions */
-void ZLIB_INTERNAL gz_error OF((gz_statep, int, const char *));
-#if defined UNDER_CE
-char ZLIB_INTERNAL *gz_strwinerror OF((DWORD error));
-#endif
-
-/* GT_OFF(x), where x is an unsigned value, is true if x > maximum z_off64_t
- value -- needed when comparing unsigned to z_off64_t, which is signed
- (possible z_off64_t types off_t, off64_t, and long are all signed) */
-#ifdef INT_MAX
-# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > INT_MAX)
-#else
-unsigned ZLIB_INTERNAL gz_intmax OF((void));
-# define GT_OFF(x) (sizeof(int) == sizeof(z_off64_t) && (x) > gz_intmax())
-#endif
+++ /dev/null
-/* gzlib.c -- zlib functions common to reading and writing gzip files
- * Copyright (C) 2004, 2010, 2011, 2012, 2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "gzguts.h"
-
-#if defined(_WIN32) && !defined(__BORLANDC__)
-# define LSEEK _lseeki64
-#else
-#if defined(_LARGEFILE64_SOURCE) && _LFS64_LARGEFILE-0
-# define LSEEK lseek64
-#else
-# define LSEEK lseek
-#endif
-#endif
-
-/* Local functions */
-local void gz_reset OF((gz_statep));
-local gzFile gz_open OF((const void *, int, const char *));
-
-#if defined UNDER_CE
-
-/* Map the Windows error number in ERROR to a locale-dependent error message
- string and return a pointer to it. Typically, the values for ERROR come
- from GetLastError.
-
- The string pointed to shall not be modified by the application, but may be
- overwritten by a subsequent call to gz_strwinerror
-
- The gz_strwinerror function does not change the current setting of
- GetLastError. */
-char ZLIB_INTERNAL *gz_strwinerror (error)
- DWORD error;
-{
- static char buf[1024];
-
- wchar_t *msgbuf;
- DWORD lasterr = GetLastError();
- DWORD chars = FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM
- | FORMAT_MESSAGE_ALLOCATE_BUFFER,
- NULL,
- error,
- 0, /* Default language */
- (LPVOID)&msgbuf,
- 0,
- NULL);
- if (chars != 0) {
- /* If there is an \r\n appended, zap it. */
- if (chars >= 2
- && msgbuf[chars - 2] == '\r' && msgbuf[chars - 1] == '\n') {
- chars -= 2;
- msgbuf[chars] = 0;
- }
-
- if (chars > sizeof (buf) - 1) {
- chars = sizeof (buf) - 1;
- msgbuf[chars] = 0;
- }
-
- wcstombs(buf, msgbuf, chars + 1);
- LocalFree(msgbuf);
- }
- else {
- sprintf(buf, "unknown win32 error (%ld)", error);
- }
-
- SetLastError(lasterr);
- return buf;
-}
-
-#endif /* UNDER_CE */
-
-/* Reset gzip file state */
-local void gz_reset(state)
- gz_statep state;
-{
- state->x.have = 0; /* no output data available */
- if (state->mode == GZ_READ) { /* for reading ... */
- state->eof = 0; /* not at end of file */
- state->past = 0; /* have not read past end yet */
- state->how = LOOK; /* look for gzip header */
- }
- state->seek = 0; /* no seek request pending */
- gz_error(state, Z_OK, NULL); /* clear error */
- state->x.pos = 0; /* no uncompressed data yet */
- state->strm.avail_in = 0; /* no input data yet */
-}
-
-/* Open a gzip file either by name or file descriptor. */
-local gzFile gz_open(path, fd, mode)
- const void *path;
- int fd;
- const char *mode;
-{
- gz_statep state;
- size_t len;
- int oflag;
-#ifdef O_CLOEXEC
- int cloexec = 0;
-#endif
-#ifdef O_EXCL
- int exclusive = 0;
-#endif
-
- /* check input */
- if (path == NULL)
- return NULL;
-
- /* allocate gzFile structure to return */
- state = (gz_statep)malloc(sizeof(gz_state));
- if (state == NULL)
- return NULL;
- state->size = 0; /* no buffers allocated yet */
- state->want = GZBUFSIZE; /* requested buffer size */
- state->msg = NULL; /* no error message yet */
-
- /* interpret mode */
- state->mode = GZ_NONE;
- state->level = Z_DEFAULT_COMPRESSION;
- state->strategy = Z_DEFAULT_STRATEGY;
- state->direct = 0;
- while (*mode) {
- if (*mode >= '0' && *mode <= '9')
- state->level = *mode - '0';
- else
- switch (*mode) {
- case 'r':
- state->mode = GZ_READ;
- break;
-#ifndef NO_GZCOMPRESS
- case 'w':
- state->mode = GZ_WRITE;
- break;
- case 'a':
- state->mode = GZ_APPEND;
- break;
-#endif
- case '+': /* can't read and write at the same time */
- free(state);
- return NULL;
- case 'b': /* ignore -- will request binary anyway */
- break;
-#ifdef O_CLOEXEC
- case 'e':
- cloexec = 1;
- break;
-#endif
-#ifdef O_EXCL
- case 'x':
- exclusive = 1;
- break;
-#endif
- case 'f':
- state->strategy = Z_FILTERED;
- break;
- case 'h':
- state->strategy = Z_HUFFMAN_ONLY;
- break;
- case 'R':
- state->strategy = Z_RLE;
- break;
- case 'F':
- state->strategy = Z_FIXED;
- break;
- case 'T':
- state->direct = 1;
- break;
- default: /* could consider as an error, but just ignore */
- ;
- }
- mode++;
- }
-
- /* must provide an "r", "w", or "a" */
- if (state->mode == GZ_NONE) {
- free(state);
- return NULL;
- }
-
- /* can't force transparent read */
- if (state->mode == GZ_READ) {
- if (state->direct) {
- free(state);
- return NULL;
- }
- state->direct = 1; /* for empty file */
- }
-
- /* save the path name for error messages */
-#ifdef _WIN32
- if (fd == -2) {
- len = wcstombs(NULL, path, 0);
- if (len == (size_t)-1)
- len = 0;
- }
- else
-#endif
- len = strlen((const char *)path);
- state->path = (char *)malloc(len + 1);
- if (state->path == NULL) {
- free(state);
- return NULL;
- }
-#ifdef _WIN32
- if (fd == -2)
- if (len)
- wcstombs(state->path, path, len + 1);
- else
- *(state->path) = 0;
- else
-#endif
-#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
- snprintf(state->path, len + 1, "%s", (const char *)path);
-#else
- strcpy(state->path, path);
-#endif
-
- /* compute the flags for open() */
- oflag =
-#ifdef O_LARGEFILE
- O_LARGEFILE |
-#endif
-#ifdef O_BINARY
- O_BINARY |
-#endif
-#ifdef O_CLOEXEC
- (cloexec ? O_CLOEXEC : 0) |
-#endif
- (state->mode == GZ_READ ?
- O_RDONLY :
- (O_WRONLY | O_CREAT |
-#ifdef O_EXCL
- (exclusive ? O_EXCL : 0) |
-#endif
- (state->mode == GZ_WRITE ?
- O_TRUNC :
- O_APPEND)));
-
- /* open the file with the appropriate flags (or just use fd) */
- state->fd = fd > -1 ? fd : (
-#ifdef _WIN32
- fd == -2 ? _wopen(path, oflag, 0666) :
-#endif
- open((const char *)path, oflag, 0666));
- if (state->fd == -1) {
- free(state->path);
- free(state);
- return NULL;
- }
- if (state->mode == GZ_APPEND)
- state->mode = GZ_WRITE; /* simplify later checks */
-
- /* save the current position for rewinding (only if reading) */
- if (state->mode == GZ_READ) {
- state->start = LSEEK(state->fd, 0, SEEK_CUR);
- if (state->start == -1) state->start = 0;
- }
-
- /* initialize stream */
- gz_reset(state);
-
- /* return stream */
- return (gzFile)state;
-}
-
-/* -- see zlib.h -- */
-gzFile ZEXPORT gzopen(path, mode)
- const char *path;
- const char *mode;
-{
- return gz_open(path, -1, mode);
-}
-
-/* -- see zlib.h -- */
-gzFile ZEXPORT gzopen64(path, mode)
- const char *path;
- const char *mode;
-{
- return gz_open(path, -1, mode);
-}
-
-/* -- see zlib.h -- */
-gzFile ZEXPORT gzdopen(fd, mode)
- int fd;
- const char *mode;
-{
- char *path; /* identifier for error messages */
- gzFile gz;
-
- if (fd == -1 || (path = (char *)malloc(7 + 3 * sizeof(int))) == NULL)
- return NULL;
-#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
- snprintf(path, 7 + 3 * sizeof(int), "<fd:%d>", fd); /* for debugging */
-#else
- sprintf(path, "<fd:%d>", fd); /* for debugging */
-#endif
- gz = gz_open(path, fd, mode);
- free(path);
- return gz;
-}
-
-/* -- see zlib.h -- */
-#ifdef _WIN32
-gzFile ZEXPORT gzopen_w(path, mode)
- const wchar_t *path;
- const char *mode;
-{
- return gz_open(path, -2, mode);
-}
-#endif
-
-/* -- see zlib.h -- */
-int ZEXPORT gzbuffer(file, size)
- gzFile file;
- unsigned size;
-{
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return -1;
-
- /* make sure we haven't already allocated memory */
- if (state->size != 0)
- return -1;
-
- /* check and set requested size */
- if (size < 2)
- size = 2; /* need two bytes to check magic header */
- state->want = size;
- return 0;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzrewind(file)
- gzFile file;
-{
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
-
- /* check that we're reading and that there's no error */
- if (state->mode != GZ_READ ||
- (state->err != Z_OK && state->err != Z_BUF_ERROR))
- return -1;
-
- /* back up and start over */
- if (LSEEK(state->fd, state->start, SEEK_SET) == -1)
- return -1;
- gz_reset(state);
- return 0;
-}
-
-/* -- see zlib.h -- */
-z_off64_t ZEXPORT gzseek64(file, offset, whence)
- gzFile file;
- z_off64_t offset;
- int whence;
-{
- unsigned n;
- z_off64_t ret;
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return -1;
-
- /* check that there's no error */
- if (state->err != Z_OK && state->err != Z_BUF_ERROR)
- return -1;
-
- /* can only seek from start or relative to current position */
- if (whence != SEEK_SET && whence != SEEK_CUR)
- return -1;
-
- /* normalize offset to a SEEK_CUR specification */
- if (whence == SEEK_SET)
- offset -= state->x.pos;
- else if (state->seek)
- offset += state->skip;
- state->seek = 0;
-
- /* if within raw area while reading, just go there */
- if (state->mode == GZ_READ && state->how == COPY &&
- state->x.pos + offset >= 0) {
- ret = LSEEK(state->fd, offset - state->x.have, SEEK_CUR);
- if (ret == -1)
- return -1;
- state->x.have = 0;
- state->eof = 0;
- state->past = 0;
- state->seek = 0;
- gz_error(state, Z_OK, NULL);
- state->strm.avail_in = 0;
- state->x.pos += offset;
- return state->x.pos;
- }
-
- /* calculate skip amount, rewinding if needed for back seek when reading */
- if (offset < 0) {
- if (state->mode != GZ_READ) /* writing -- can't go backwards */
- return -1;
- offset += state->x.pos;
- if (offset < 0) /* before start of file! */
- return -1;
- if (gzrewind(file) == -1) /* rewind, then skip to offset */
- return -1;
- }
-
- /* if reading, skip what's in output buffer (one less gzgetc() check) */
- if (state->mode == GZ_READ) {
- n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > offset ?
- (unsigned)offset : state->x.have;
- state->x.have -= n;
- state->x.next += n;
- state->x.pos += n;
- offset -= n;
- }
-
- /* request skip (if not zero) */
- if (offset) {
- state->seek = 1;
- state->skip = offset;
- }
- return state->x.pos + offset;
-}
-
-/* -- see zlib.h -- */
-z_off_t ZEXPORT gzseek(file, offset, whence)
- gzFile file;
- z_off_t offset;
- int whence;
-{
- z_off64_t ret;
-
- ret = gzseek64(file, (z_off64_t)offset, whence);
- return ret == (z_off_t)ret ? (z_off_t)ret : -1;
-}
-
-/* -- see zlib.h -- */
-z_off64_t ZEXPORT gztell64(file)
- gzFile file;
-{
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return -1;
-
- /* return position */
- return state->x.pos + (state->seek ? state->skip : 0);
-}
-
-/* -- see zlib.h -- */
-z_off_t ZEXPORT gztell(file)
- gzFile file;
-{
- z_off64_t ret;
-
- ret = gztell64(file);
- return ret == (z_off_t)ret ? (z_off_t)ret : -1;
-}
-
-/* -- see zlib.h -- */
-z_off64_t ZEXPORT gzoffset64(file)
- gzFile file;
-{
- z_off64_t offset;
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return -1;
-
- /* compute and return effective offset in file */
- offset = LSEEK(state->fd, 0, SEEK_CUR);
- if (offset == -1)
- return -1;
- if (state->mode == GZ_READ) /* reading */
- offset -= state->strm.avail_in; /* don't count buffered input */
- return offset;
-}
-
-/* -- see zlib.h -- */
-z_off_t ZEXPORT gzoffset(file)
- gzFile file;
-{
- z_off64_t ret;
-
- ret = gzoffset64(file);
- return ret == (z_off_t)ret ? (z_off_t)ret : -1;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzeof(file)
- gzFile file;
-{
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return 0;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return 0;
-
- /* return end-of-file state */
- return state->mode == GZ_READ ? state->past : 0;
-}
-
-/* -- see zlib.h -- */
-const char * ZEXPORT gzerror(file, errnum)
- gzFile file;
- int *errnum;
-{
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return NULL;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return NULL;
-
- /* return error information */
- if (errnum != NULL)
- *errnum = state->err;
- return state->err == Z_MEM_ERROR ? "out of memory" :
- (state->msg == NULL ? "" : state->msg);
-}
-
-/* -- see zlib.h -- */
-void ZEXPORT gzclearerr(file)
- gzFile file;
-{
- gz_statep state;
-
- /* get internal structure and check integrity */
- if (file == NULL)
- return;
- state = (gz_statep)file;
- if (state->mode != GZ_READ && state->mode != GZ_WRITE)
- return;
-
- /* clear error and end-of-file */
- if (state->mode == GZ_READ) {
- state->eof = 0;
- state->past = 0;
- }
- gz_error(state, Z_OK, NULL);
-}
-
-/* Create an error message in allocated memory and set state->err and
- state->msg accordingly. Free any previous error message already there. Do
- not try to free or allocate space if the error is Z_MEM_ERROR (out of
- memory). Simply save the error message as a static string. If there is an
- allocation failure constructing the error message, then convert the error to
- out of memory. */
-void ZLIB_INTERNAL gz_error(state, err, msg)
- gz_statep state;
- int err;
- const char *msg;
-{
- /* free previously allocated message and clear */
- if (state->msg != NULL) {
- if (state->err != Z_MEM_ERROR)
- free(state->msg);
- state->msg = NULL;
- }
-
- /* if fatal, set state->x.have to 0 so that the gzgetc() macro fails */
- if (err != Z_OK && err != Z_BUF_ERROR)
- state->x.have = 0;
-
- /* set error code, and if no message, then done */
- state->err = err;
- if (msg == NULL)
- return;
-
- /* for an out of memory error, return literal string when requested */
- if (err == Z_MEM_ERROR)
- return;
-
- /* construct error message with path */
- if ((state->msg = (char *)malloc(strlen(state->path) + strlen(msg) + 3)) ==
- NULL) {
- state->err = Z_MEM_ERROR;
- return;
- }
-#if !defined(NO_snprintf) && !defined(NO_vsnprintf)
- snprintf(state->msg, strlen(state->path) + strlen(msg) + 3,
- "%s%s%s", state->path, ": ", msg);
-#else
- strcpy(state->msg, state->path);
- strcat(state->msg, ": ");
- strcat(state->msg, msg);
-#endif
- return;
-}
-
-#ifndef INT_MAX
-/* portably return maximum value for an int (when limits.h presumed not
- available) -- we need to do this to cover cases where 2's complement not
- used, since C standard permits 1's complement and sign-bit representations,
- otherwise we could just use ((unsigned)-1) >> 1 */
-unsigned ZLIB_INTERNAL gz_intmax()
-{
- unsigned p, q;
-
- p = 1;
- do {
- q = p;
- p <<= 1;
- p++;
- } while (p > q);
- return q >> 1;
-}
-#endif
+++ /dev/null
-/* gzread.c -- zlib functions for reading gzip files
- * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "gzguts.h"
-
-/* Local functions */
-local int gz_load OF((gz_statep, unsigned char *, unsigned, unsigned *));
-local int gz_avail OF((gz_statep));
-local int gz_look OF((gz_statep));
-local int gz_decomp OF((gz_statep));
-local int gz_fetch OF((gz_statep));
-local int gz_skip OF((gz_statep, z_off64_t));
-
-/* Use read() to load a buffer -- return -1 on error, otherwise 0. Read from
- state->fd, and update state->eof, state->err, and state->msg as appropriate.
- This function needs to loop on read(), since read() is not guaranteed to
- read the number of bytes requested, depending on the type of descriptor. */
-local int gz_load(state, buf, len, have)
- gz_statep state;
- unsigned char *buf;
- unsigned len;
- unsigned *have;
-{
- int ret;
-
- *have = 0;
- do {
- ret = read(state->fd, buf + *have, len - *have);
- if (ret <= 0)
- break;
- *have += ret;
- } while (*have < len);
- if (ret < 0) {
- gz_error(state, Z_ERRNO, zstrerror());
- return -1;
- }
- if (ret == 0)
- state->eof = 1;
- return 0;
-}
-
-/* Load up input buffer and set eof flag if last data loaded -- return -1 on
- error, 0 otherwise. Note that the eof flag is set when the end of the input
- file is reached, even though there may be unused data in the buffer. Once
- that data has been used, no more attempts will be made to read the file.
- If strm->avail_in != 0, then the current data is moved to the beginning of
- the input buffer, and then the remainder of the buffer is loaded with the
- available data from the input file. */
-local int gz_avail(state)
- gz_statep state;
-{
- unsigned got;
- z_streamp strm = &(state->strm);
-
- if (state->err != Z_OK && state->err != Z_BUF_ERROR)
- return -1;
- if (state->eof == 0) {
- if (strm->avail_in) { /* copy what's there to the start */
- unsigned char *p = state->in;
- unsigned const char *q = strm->next_in;
- unsigned n = strm->avail_in;
- do {
- *p++ = *q++;
- } while (--n);
- }
- if (gz_load(state, state->in + strm->avail_in,
- state->size - strm->avail_in, &got) == -1)
- return -1;
- strm->avail_in += got;
- strm->next_in = state->in;
- }
- return 0;
-}
-
-/* Look for gzip header, set up for inflate or copy. state->x.have must be 0.
- If this is the first time in, allocate required memory. state->how will be
- left unchanged if there is no more input data available, will be set to COPY
- if there is no gzip header and direct copying will be performed, or it will
- be set to GZIP for decompression. If direct copying, then leftover input
- data from the input buffer will be copied to the output buffer. In that
- case, all further file reads will be directly to either the output buffer or
- a user buffer. If decompressing, the inflate state will be initialized.
- gz_look() will return 0 on success or -1 on failure. */
-local int gz_look(state)
- gz_statep state;
-{
- z_streamp strm = &(state->strm);
-
- /* allocate read buffers and inflate memory */
- if (state->size == 0) {
- /* allocate buffers */
- state->in = (unsigned char *)malloc(state->want);
- state->out = (unsigned char *)malloc(state->want << 1);
- if (state->in == NULL || state->out == NULL) {
- if (state->out != NULL)
- free(state->out);
- if (state->in != NULL)
- free(state->in);
- gz_error(state, Z_MEM_ERROR, "out of memory");
- return -1;
- }
- state->size = state->want;
-
- /* allocate inflate memory */
- state->strm.zalloc = Z_NULL;
- state->strm.zfree = Z_NULL;
- state->strm.opaque = Z_NULL;
- state->strm.avail_in = 0;
- state->strm.next_in = Z_NULL;
- if (inflateInit2(&(state->strm), 15 + 16) != Z_OK) { /* gunzip */
- free(state->out);
- free(state->in);
- state->size = 0;
- gz_error(state, Z_MEM_ERROR, "out of memory");
- return -1;
- }
- }
-
- /* get at least the magic bytes in the input buffer */
- if (strm->avail_in < 2) {
- if (gz_avail(state) == -1)
- return -1;
- if (strm->avail_in == 0)
- return 0;
- }
-
- /* look for gzip magic bytes -- if there, do gzip decoding (note: there is
- a logical dilemma here when considering the case of a partially written
- gzip file, to wit, if a single 31 byte is written, then we cannot tell
- whether this is a single-byte file, or just a partially written gzip
- file -- for here we assume that if a gzip file is being written, then
- the header will be written in a single operation, so that reading a
- single byte is sufficient indication that it is not a gzip file) */
- if (strm->avail_in > 1 &&
- strm->next_in[0] == 31 && strm->next_in[1] == 139) {
- inflateReset(strm);
- state->how = GZIP;
- state->direct = 0;
- return 0;
- }
-
- /* no gzip header -- if we were decoding gzip before, then this is trailing
- garbage. Ignore the trailing garbage and finish. */
- if (state->direct == 0) {
- strm->avail_in = 0;
- state->eof = 1;
- state->x.have = 0;
- return 0;
- }
-
- /* doing raw i/o, copy any leftover input to output -- this assumes that
- the output buffer is larger than the input buffer, which also assures
- space for gzungetc() */
- state->x.next = state->out;
- if (strm->avail_in) {
- memcpy(state->x.next, strm->next_in, strm->avail_in);
- state->x.have = strm->avail_in;
- strm->avail_in = 0;
- }
- state->how = COPY;
- state->direct = 1;
- return 0;
-}
-
-/* Decompress from input to the provided next_out and avail_out in the state.
- On return, state->x.have and state->x.next point to the just decompressed
- data. If the gzip stream completes, state->how is reset to LOOK to look for
- the next gzip stream or raw data, once state->x.have is depleted. Returns 0
- on success, -1 on failure. */
-local int gz_decomp(state)
- gz_statep state;
-{
- int ret = Z_OK;
- unsigned had;
- z_streamp strm = &(state->strm);
-
- /* fill output buffer up to end of deflate stream */
- had = strm->avail_out;
- do {
- /* get more input for inflate() */
- if (strm->avail_in == 0 && gz_avail(state) == -1)
- return -1;
- if (strm->avail_in == 0) {
- gz_error(state, Z_BUF_ERROR, "unexpected end of file");
- break;
- }
-
- /* decompress and handle errors */
- ret = inflate(strm, Z_NO_FLUSH);
- if (ret == Z_STREAM_ERROR || ret == Z_NEED_DICT) {
- gz_error(state, Z_STREAM_ERROR,
- "internal error: inflate stream corrupt");
- return -1;
- }
- if (ret == Z_MEM_ERROR) {
- gz_error(state, Z_MEM_ERROR, "out of memory");
- return -1;
- }
- if (ret == Z_DATA_ERROR) { /* deflate stream invalid */
- gz_error(state, Z_DATA_ERROR,
- strm->msg == NULL ? "compressed data error" : strm->msg);
- return -1;
- }
- } while (strm->avail_out && ret != Z_STREAM_END);
-
- /* update available output */
- state->x.have = had - strm->avail_out;
- state->x.next = strm->next_out - state->x.have;
-
- /* if the gzip stream completed successfully, look for another */
- if (ret == Z_STREAM_END)
- state->how = LOOK;
-
- /* good decompression */
- return 0;
-}
-
-/* Fetch data and put it in the output buffer. Assumes state->x.have is 0.
- Data is either copied from the input file or decompressed from the input
- file depending on state->how. If state->how is LOOK, then a gzip header is
- looked for to determine whether to copy or decompress. Returns -1 on error,
- otherwise 0. gz_fetch() will leave state->how as COPY or GZIP unless the
- end of the input file has been reached and all data has been processed. */
-local int gz_fetch(state)
- gz_statep state;
-{
- z_streamp strm = &(state->strm);
-
- do {
- switch(state->how) {
- case LOOK: /* -> LOOK, COPY (only if never GZIP), or GZIP */
- if (gz_look(state) == -1)
- return -1;
- if (state->how == LOOK)
- return 0;
- break;
- case COPY: /* -> COPY */
- if (gz_load(state, state->out, state->size << 1, &(state->x.have))
- == -1)
- return -1;
- state->x.next = state->out;
- return 0;
- case GZIP: /* -> GZIP or LOOK (if end of gzip stream) */
- strm->avail_out = state->size << 1;
- strm->next_out = state->out;
- if (gz_decomp(state) == -1)
- return -1;
- }
- } while (state->x.have == 0 && (!state->eof || strm->avail_in));
- return 0;
-}
-
-/* Skip len uncompressed bytes of output. Return -1 on error, 0 on success. */
-local int gz_skip(state, len)
- gz_statep state;
- z_off64_t len;
-{
- unsigned n;
-
- /* skip over len bytes or reach end-of-file, whichever comes first */
- while (len)
- /* skip over whatever is in output buffer */
- if (state->x.have) {
- n = GT_OFF(state->x.have) || (z_off64_t)state->x.have > len ?
- (unsigned)len : state->x.have;
- state->x.have -= n;
- state->x.next += n;
- state->x.pos += n;
- len -= n;
- }
-
- /* output buffer empty -- return if we're at the end of the input */
- else if (state->eof && state->strm.avail_in == 0)
- break;
-
- /* need more data to skip -- load up output buffer */
- else {
- /* get more output, looking for header if required */
- if (gz_fetch(state) == -1)
- return -1;
- }
- return 0;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzread(file, buf, len)
- gzFile file;
- voidp buf;
- unsigned len;
-{
- unsigned got, n;
- gz_statep state;
- z_streamp strm;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- strm = &(state->strm);
-
- /* check that we're reading and that there's no (serious) error */
- if (state->mode != GZ_READ ||
- (state->err != Z_OK && state->err != Z_BUF_ERROR))
- return -1;
-
- /* since an int is returned, make sure len fits in one, otherwise return
- with an error (this avoids the flaw in the interface) */
- if ((int)len < 0) {
- gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
- return -1;
- }
-
- /* if len is zero, avoid unnecessary operations */
- if (len == 0)
- return 0;
-
- /* process a skip request */
- if (state->seek) {
- state->seek = 0;
- if (gz_skip(state, state->skip) == -1)
- return -1;
- }
-
- /* get len bytes to buf, or less than len if at the end */
- got = 0;
- do {
- /* first just try copying data from the output buffer */
- if (state->x.have) {
- n = state->x.have > len ? len : state->x.have;
- memcpy(buf, state->x.next, n);
- state->x.next += n;
- state->x.have -= n;
- }
-
- /* output buffer empty -- return if we're at the end of the input */
- else if (state->eof && strm->avail_in == 0) {
- state->past = 1; /* tried to read past end */
- break;
- }
-
- /* need output data -- for small len or new stream load up our output
- buffer */
- else if (state->how == LOOK || len < (state->size << 1)) {
- /* get more output, looking for header if required */
- if (gz_fetch(state) == -1)
- return -1;
- continue; /* no progress yet -- go back to copy above */
- /* the copy above assures that we will leave with space in the
- output buffer, allowing at least one gzungetc() to succeed */
- }
-
- /* large len -- read directly into user buffer */
- else if (state->how == COPY) { /* read directly */
- if (gz_load(state, (unsigned char *)buf, len, &n) == -1)
- return -1;
- }
-
- /* large len -- decompress directly into user buffer */
- else { /* state->how == GZIP */
- strm->avail_out = len;
- strm->next_out = (unsigned char *)buf;
- if (gz_decomp(state) == -1)
- return -1;
- n = state->x.have;
- state->x.have = 0;
- }
-
- /* update progress */
- len -= n;
- buf = (char *)buf + n;
- got += n;
- state->x.pos += n;
- } while (len);
-
- /* return number of bytes read into user buffer (will fit in int) */
- return (int)got;
-}
-
-/* -- see zlib.h -- */
-#ifdef Z_PREFIX_SET
-# undef z_gzgetc
-#else
-# undef gzgetc
-#endif
-int ZEXPORT gzgetc(file)
- gzFile file;
-{
- int ret;
- unsigned char buf[1];
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
-
- /* check that we're reading and that there's no (serious) error */
- if (state->mode != GZ_READ ||
- (state->err != Z_OK && state->err != Z_BUF_ERROR))
- return -1;
-
- /* try output buffer (no need to check for skip request) */
- if (state->x.have) {
- state->x.have--;
- state->x.pos++;
- return *(state->x.next)++;
- }
-
- /* nothing there -- try gzread() */
- ret = gzread(file, buf, 1);
- return ret < 1 ? -1 : buf[0];
-}
-
-int ZEXPORT gzgetc_(file)
-gzFile file;
-{
- return gzgetc(file);
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzungetc(c, file)
- int c;
- gzFile file;
-{
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
-
- /* check that we're reading and that there's no (serious) error */
- if (state->mode != GZ_READ ||
- (state->err != Z_OK && state->err != Z_BUF_ERROR))
- return -1;
-
- /* process a skip request */
- if (state->seek) {
- state->seek = 0;
- if (gz_skip(state, state->skip) == -1)
- return -1;
- }
-
- /* can't push EOF */
- if (c < 0)
- return -1;
-
- /* if output buffer empty, put byte at end (allows more pushing) */
- if (state->x.have == 0) {
- state->x.have = 1;
- state->x.next = state->out + (state->size << 1) - 1;
- state->x.next[0] = c;
- state->x.pos--;
- state->past = 0;
- return c;
- }
-
- /* if no room, give up (must have already done a gzungetc()) */
- if (state->x.have == (state->size << 1)) {
- gz_error(state, Z_DATA_ERROR, "out of room to push characters");
- return -1;
- }
-
- /* slide output data if needed and insert byte before existing data */
- if (state->x.next == state->out) {
- unsigned char *src = state->out + state->x.have;
- unsigned char *dest = state->out + (state->size << 1);
- while (src > state->out)
- *--dest = *--src;
- state->x.next = dest;
- }
- state->x.have++;
- state->x.next--;
- state->x.next[0] = c;
- state->x.pos--;
- state->past = 0;
- return c;
-}
-
-/* -- see zlib.h -- */
-char * ZEXPORT gzgets(file, buf, len)
- gzFile file;
- char *buf;
- int len;
-{
- unsigned left, n;
- char *str;
- unsigned char *eol;
- gz_statep state;
-
- /* check parameters and get internal structure */
- if (file == NULL || buf == NULL || len < 1)
- return NULL;
- state = (gz_statep)file;
-
- /* check that we're reading and that there's no (serious) error */
- if (state->mode != GZ_READ ||
- (state->err != Z_OK && state->err != Z_BUF_ERROR))
- return NULL;
-
- /* process a skip request */
- if (state->seek) {
- state->seek = 0;
- if (gz_skip(state, state->skip) == -1)
- return NULL;
- }
-
- /* copy output bytes up to new line or len - 1, whichever comes first --
- append a terminating zero to the string (we don't check for a zero in
- the contents, let the user worry about that) */
- str = buf;
- left = (unsigned)len - 1;
- if (left) do {
- /* assure that something is in the output buffer */
- if (state->x.have == 0 && gz_fetch(state) == -1)
- return NULL; /* error */
- if (state->x.have == 0) { /* end of file */
- state->past = 1; /* read past end */
- break; /* return what we have */
- }
-
- /* look for end-of-line in current output buffer */
- n = state->x.have > left ? left : state->x.have;
- eol = (unsigned char *)memchr(state->x.next, '\n', n);
- if (eol != NULL)
- n = (unsigned)(eol - state->x.next) + 1;
-
- /* copy through end-of-line, or remainder if not found */
- memcpy(buf, state->x.next, n);
- state->x.have -= n;
- state->x.next += n;
- state->x.pos += n;
- left -= n;
- buf += n;
- } while (left && eol == NULL);
-
- /* return terminated string, or if nothing, end of file */
- if (buf == str)
- return NULL;
- buf[0] = 0;
- return str;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzdirect(file)
- gzFile file;
-{
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return 0;
- state = (gz_statep)file;
-
- /* if the state is not known, but we can find out, then do so (this is
- mainly for right after a gzopen() or gzdopen()) */
- if (state->mode == GZ_READ && state->how == LOOK && state->x.have == 0)
- (void)gz_look(state);
-
- /* return 1 if transparent, 0 if processing a gzip stream */
- return state->direct;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzclose_r(file)
- gzFile file;
-{
- int ret, err;
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return Z_STREAM_ERROR;
- state = (gz_statep)file;
-
- /* check that we're reading */
- if (state->mode != GZ_READ)
- return Z_STREAM_ERROR;
-
- /* free memory and close file */
- if (state->size) {
- inflateEnd(&(state->strm));
- free(state->out);
- free(state->in);
- }
- err = state->err == Z_BUF_ERROR ? Z_BUF_ERROR : Z_OK;
- gz_error(state, Z_OK, NULL);
- free(state->path);
- ret = close(state->fd);
- free(state);
- return ret ? Z_ERRNO : err;
-}
+++ /dev/null
-/* gzwrite.c -- zlib functions for writing gzip files
- * Copyright (C) 2004, 2005, 2010, 2011, 2012, 2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "gzguts.h"
-
-/* Local functions */
-local int gz_init OF((gz_statep));
-local int gz_comp OF((gz_statep, int));
-local int gz_zero OF((gz_statep, z_off64_t));
-
-/* Initialize state for writing a gzip file. Mark initialization by setting
- state->size to non-zero. Return -1 on failure or 0 on success. */
-local int gz_init(state)
- gz_statep state;
-{
- int ret;
- z_streamp strm = &(state->strm);
-
- /* allocate input buffer */
- state->in = (unsigned char *)malloc(state->want);
- if (state->in == NULL) {
- gz_error(state, Z_MEM_ERROR, "out of memory");
- return -1;
- }
-
- /* only need output buffer and deflate state if compressing */
- if (!state->direct) {
- /* allocate output buffer */
- state->out = (unsigned char *)malloc(state->want);
- if (state->out == NULL) {
- free(state->in);
- gz_error(state, Z_MEM_ERROR, "out of memory");
- return -1;
- }
-
- /* allocate deflate memory, set up for gzip compression */
- strm->zalloc = Z_NULL;
- strm->zfree = Z_NULL;
- strm->opaque = Z_NULL;
- ret = deflateInit2(strm, state->level, Z_DEFLATED,
- MAX_WBITS + 16, DEF_MEM_LEVEL, state->strategy);
- if (ret != Z_OK) {
- free(state->out);
- free(state->in);
- gz_error(state, Z_MEM_ERROR, "out of memory");
- return -1;
- }
- }
-
- /* mark state as initialized */
- state->size = state->want;
-
- /* initialize write buffer if compressing */
- if (!state->direct) {
- strm->avail_out = state->size;
- strm->next_out = state->out;
- state->x.next = strm->next_out;
- }
- return 0;
-}
-
-/* Compress whatever is at avail_in and next_in and write to the output file.
- Return -1 if there is an error writing to the output file, otherwise 0.
- flush is assumed to be a valid deflate() flush value. If flush is Z_FINISH,
- then the deflate() state is reset to start a new gzip stream. If gz->direct
- is true, then simply write to the output file without compressing, and
- ignore flush. */
-local int gz_comp(state, flush)
- gz_statep state;
- int flush;
-{
- int ret, got;
- unsigned have;
- z_streamp strm = &(state->strm);
-
- /* allocate memory if this is the first time through */
- if (state->size == 0 && gz_init(state) == -1)
- return -1;
-
- /* write directly if requested */
- if (state->direct) {
- got = write(state->fd, strm->next_in, strm->avail_in);
- if (got < 0 || (unsigned)got != strm->avail_in) {
- gz_error(state, Z_ERRNO, zstrerror());
- return -1;
- }
- strm->avail_in = 0;
- return 0;
- }
-
- /* run deflate() on provided input until it produces no more output */
- ret = Z_OK;
- do {
- /* write out current buffer contents if full, or if flushing, but if
- doing Z_FINISH then don't write until we get to Z_STREAM_END */
- if (strm->avail_out == 0 || (flush != Z_NO_FLUSH &&
- (flush != Z_FINISH || ret == Z_STREAM_END))) {
- have = (unsigned)(strm->next_out - state->x.next);
- if (have && ((got = write(state->fd, state->x.next, have)) < 0 ||
- (unsigned)got != have)) {
- gz_error(state, Z_ERRNO, zstrerror());
- return -1;
- }
- if (strm->avail_out == 0) {
- strm->avail_out = state->size;
- strm->next_out = state->out;
- }
- state->x.next = strm->next_out;
- }
-
- /* compress */
- have = strm->avail_out;
- ret = deflate(strm, flush);
- if (ret == Z_STREAM_ERROR) {
- gz_error(state, Z_STREAM_ERROR,
- "internal error: deflate stream corrupt");
- return -1;
- }
- have -= strm->avail_out;
- } while (have);
-
- /* if that completed a deflate stream, allow another to start */
- if (flush == Z_FINISH)
- deflateReset(strm);
-
- /* all done, no errors */
- return 0;
-}
-
-/* Compress len zeros to output. Return -1 on error, 0 on success. */
-local int gz_zero(state, len)
- gz_statep state;
- z_off64_t len;
-{
- int first;
- unsigned n;
- z_streamp strm = &(state->strm);
-
- /* consume whatever's left in the input buffer */
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
- return -1;
-
- /* compress len zeros (len guaranteed > 0) */
- first = 1;
- while (len) {
- n = GT_OFF(state->size) || (z_off64_t)state->size > len ?
- (unsigned)len : state->size;
- if (first) {
- memset(state->in, 0, n);
- first = 0;
- }
- strm->avail_in = n;
- strm->next_in = state->in;
- state->x.pos += n;
- if (gz_comp(state, Z_NO_FLUSH) == -1)
- return -1;
- len -= n;
- }
- return 0;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzwrite(file, buf, len)
- gzFile file;
- voidpc buf;
- unsigned len;
-{
- unsigned put = len;
- gz_statep state;
- z_streamp strm;
-
- /* get internal structure */
- if (file == NULL)
- return 0;
- state = (gz_statep)file;
- strm = &(state->strm);
-
- /* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
- return 0;
-
- /* since an int is returned, make sure len fits in one, otherwise return
- with an error (this avoids the flaw in the interface) */
- if ((int)len < 0) {
- gz_error(state, Z_DATA_ERROR, "requested length does not fit in int");
- return 0;
- }
-
- /* if len is zero, avoid unnecessary operations */
- if (len == 0)
- return 0;
-
- /* allocate memory if this is the first time through */
- if (state->size == 0 && gz_init(state) == -1)
- return 0;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- return 0;
- }
-
- /* for small len, copy to input buffer, otherwise compress directly */
- if (len < state->size) {
- /* copy to input buffer, compress when full */
- do {
- unsigned have, copy;
-
- if (strm->avail_in == 0)
- strm->next_in = state->in;
- have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
- copy = state->size - have;
- if (copy > len)
- copy = len;
- memcpy(state->in + have, buf, copy);
- strm->avail_in += copy;
- state->x.pos += copy;
- buf = (const char *)buf + copy;
- len -= copy;
- if (len && gz_comp(state, Z_NO_FLUSH) == -1)
- return 0;
- } while (len);
- }
- else {
- /* consume whatever's left in the input buffer */
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
- return 0;
-
- /* directly compress user buffer to file */
- strm->avail_in = len;
- strm->next_in = (z_const Bytef *)buf;
- state->x.pos += len;
- if (gz_comp(state, Z_NO_FLUSH) == -1)
- return 0;
- }
-
- /* input was all buffered or compressed (put will fit in int) */
- return (int)put;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzputc(file, c)
- gzFile file;
- int c;
-{
- unsigned have;
- unsigned char buf[1];
- gz_statep state;
- z_streamp strm;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- strm = &(state->strm);
-
- /* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
- return -1;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- return -1;
- }
-
- /* try writing to input buffer for speed (state->size == 0 if buffer not
- initialized) */
- if (state->size) {
- if (strm->avail_in == 0)
- strm->next_in = state->in;
- have = (unsigned)((strm->next_in + strm->avail_in) - state->in);
- if (have < state->size) {
- state->in[have] = c;
- strm->avail_in++;
- state->x.pos++;
- return c & 0xff;
- }
- }
-
- /* no room in buffer or not initialized, use gz_write() */
- buf[0] = c;
- if (gzwrite(file, buf, 1) != 1)
- return -1;
- return c & 0xff;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzputs(file, str)
- gzFile file;
- const char *str;
-{
- int ret;
- unsigned len;
-
- /* write string */
- len = (unsigned)strlen(str);
- ret = gzwrite(file, str, len);
- return ret == 0 && len != 0 ? -1 : ret;
-}
-
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-#include <stdarg.h>
-
-/* -- see zlib.h -- */
-int ZEXPORTVA gzvprintf(gzFile file, const char *format, va_list va)
-{
- int size, len;
- gz_statep state;
- z_streamp strm;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- strm = &(state->strm);
-
- /* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
- return 0;
-
- /* make sure we have some buffer space */
- if (state->size == 0 && gz_init(state) == -1)
- return 0;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- return 0;
- }
-
- /* consume whatever's left in the input buffer */
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
- return 0;
-
- /* do the printf() into the input buffer, put length in len */
- size = (int)(state->size);
- state->in[size - 1] = 0;
-#ifdef NO_vsnprintf
-# ifdef HAS_vsprintf_void
- (void)vsprintf((char *)(state->in), format, va);
- for (len = 0; len < size; len++)
- if (state->in[len] == 0) break;
-# else
- len = vsprintf((char *)(state->in), format, va);
-# endif
-#else
-# ifdef HAS_vsnprintf_void
- (void)vsnprintf((char *)(state->in), size, format, va);
- len = strlen((char *)(state->in));
-# else
- len = vsnprintf((char *)(state->in), size, format, va);
-# endif
-#endif
-
- /* check that printf() results fit in buffer */
- if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)
- return 0;
-
- /* update buffer and position, defer compression until needed */
- strm->avail_in = (unsigned)len;
- strm->next_in = state->in;
- state->x.pos += len;
- return len;
-}
-
-int ZEXPORTVA gzprintf(gzFile file, const char *format, ...)
-{
- va_list va;
- int ret;
-
- va_start(va, format);
- ret = gzvprintf(file, format, va);
- va_end(va);
- return ret;
-}
-
-#else /* !STDC && !Z_HAVE_STDARG_H */
-
-/* -- see zlib.h -- */
-int ZEXPORTVA gzprintf (file, format, a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
- a11, a12, a13, a14, a15, a16, a17, a18, a19, a20)
- gzFile file;
- const char *format;
- int a1, a2, a3, a4, a5, a6, a7, a8, a9, a10,
- a11, a12, a13, a14, a15, a16, a17, a18, a19, a20;
-{
- int size, len;
- gz_statep state;
- z_streamp strm;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
- strm = &(state->strm);
-
- /* check that can really pass pointer in ints */
- if (sizeof(int) != sizeof(void *))
- return 0;
-
- /* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
- return 0;
-
- /* make sure we have some buffer space */
- if (state->size == 0 && gz_init(state) == -1)
- return 0;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- return 0;
- }
-
- /* consume whatever's left in the input buffer */
- if (strm->avail_in && gz_comp(state, Z_NO_FLUSH) == -1)
- return 0;
-
- /* do the printf() into the input buffer, put length in len */
- size = (int)(state->size);
- state->in[size - 1] = 0;
-#ifdef NO_snprintf
-# ifdef HAS_sprintf_void
- sprintf((char *)(state->in), format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
- for (len = 0; len < size; len++)
- if (state->in[len] == 0) break;
-# else
- len = sprintf((char *)(state->in), format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
-# endif
-#else
-# ifdef HAS_snprintf_void
- snprintf((char *)(state->in), size, format, a1, a2, a3, a4, a5, a6, a7, a8,
- a9, a10, a11, a12, a13, a14, a15, a16, a17, a18, a19, a20);
- len = strlen((char *)(state->in));
-# else
- len = snprintf((char *)(state->in), size, format, a1, a2, a3, a4, a5, a6,
- a7, a8, a9, a10, a11, a12, a13, a14, a15, a16, a17, a18,
- a19, a20);
-# endif
-#endif
-
- /* check that printf() results fit in buffer */
- if (len <= 0 || len >= (int)size || state->in[size - 1] != 0)
- return 0;
-
- /* update buffer and position, defer compression until needed */
- strm->avail_in = (unsigned)len;
- strm->next_in = state->in;
- state->x.pos += len;
- return len;
-}
-
-#endif
-
-/* -- see zlib.h -- */
-int ZEXPORT gzflush(file, flush)
- gzFile file;
- int flush;
-{
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return -1;
- state = (gz_statep)file;
-
- /* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
- return Z_STREAM_ERROR;
-
- /* check flush parameter */
- if (flush < 0 || flush > Z_FINISH)
- return Z_STREAM_ERROR;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- return -1;
- }
-
- /* compress remaining data with requested flush */
- gz_comp(state, flush);
- return state->err;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzsetparams(file, level, strategy)
- gzFile file;
- int level;
- int strategy;
-{
- gz_statep state;
- z_streamp strm;
-
- /* get internal structure */
- if (file == NULL)
- return Z_STREAM_ERROR;
- state = (gz_statep)file;
- strm = &(state->strm);
-
- /* check that we're writing and that there's no error */
- if (state->mode != GZ_WRITE || state->err != Z_OK)
- return Z_STREAM_ERROR;
-
- /* if no change is requested, then do nothing */
- if (level == state->level && strategy == state->strategy)
- return Z_OK;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- return -1;
- }
-
- /* change compression parameters for subsequent input */
- if (state->size) {
- /* flush previous input with previous parameters before changing */
- if (strm->avail_in && gz_comp(state, Z_PARTIAL_FLUSH) == -1)
- return state->err;
- deflateParams(strm, level, strategy);
- }
- state->level = level;
- state->strategy = strategy;
- return Z_OK;
-}
-
-/* -- see zlib.h -- */
-int ZEXPORT gzclose_w(file)
- gzFile file;
-{
- int ret = Z_OK;
- gz_statep state;
-
- /* get internal structure */
- if (file == NULL)
- return Z_STREAM_ERROR;
- state = (gz_statep)file;
-
- /* check that we're writing */
- if (state->mode != GZ_WRITE)
- return Z_STREAM_ERROR;
-
- /* check for seek request */
- if (state->seek) {
- state->seek = 0;
- if (gz_zero(state, state->skip) == -1)
- ret = state->err;
- }
-
- /* flush, free memory, and close file */
- if (gz_comp(state, Z_FINISH) == -1)
- ret = state->err;
- if (state->size) {
- if (!state->direct) {
- (void)deflateEnd(&(state->strm));
- free(state->out);
- }
- free(state->in);
- }
- gz_error(state, Z_OK, NULL);
- free(state->path);
- if (close(state->fd) == -1)
- ret = Z_ERRNO;
- free(state);
- return ret;
-}
+++ /dev/null
-/* infback.c -- inflate using a call-back interface
- * Copyright (C) 1995-2011 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- This code is largely copied from inflate.c. Normally either infback.o or
- inflate.o would be linked into an application--not both. The interface
- with inffast.c is retained so that optimized assembler-coded versions of
- inflate_fast() can be used with either inflate.c or infback.c.
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-/* function prototypes */
-local void fixedtables OF((struct inflate_state FAR *state));
-
-/*
- strm provides memory allocation functions in zalloc and zfree, or
- Z_NULL to use the library memory allocation functions.
-
- windowBits is in the range 8..15, and window is a user-supplied
- window and output buffer that is 2**windowBits bytes.
- */
-int ZEXPORT inflateBackInit_(strm, windowBits, window, version, stream_size)
-z_streamp strm;
-int windowBits;
-unsigned char FAR *window;
-const char *version;
-int stream_size;
-{
- struct inflate_state FAR *state;
-
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
- stream_size != (int)(sizeof(z_stream)))
- return Z_VERSION_ERROR;
- if (strm == Z_NULL || window == Z_NULL ||
- windowBits < 8 || windowBits > 15)
- return Z_STREAM_ERROR;
- strm->msg = Z_NULL; /* in case we return an error */
- if (strm->zalloc == (alloc_func)0) {
-#ifdef Z_SOLO
- return Z_STREAM_ERROR;
-#else
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
-#endif
- }
- if (strm->zfree == (free_func)0)
-#ifdef Z_SOLO
- return Z_STREAM_ERROR;
-#else
- strm->zfree = zcfree;
-#endif
- state = (struct inflate_state FAR *)ZALLOC(strm, 1,
- sizeof(struct inflate_state));
- if (state == Z_NULL) return Z_MEM_ERROR;
- Tracev((stderr, "inflate: allocated\n"));
- strm->state = (struct internal_state FAR *)state;
- state->dmax = 32768U;
- state->wbits = windowBits;
- state->wsize = 1U << windowBits;
- state->window = window;
- state->wnext = 0;
- state->whave = 0;
- return Z_OK;
-}
-
-/*
- Return state with length and distance decoding tables and index sizes set to
- fixed code decoding. Normally this returns fixed tables from inffixed.h.
- If BUILDFIXED is defined, then instead this routine builds the tables the
- first time it's called, and returns those tables the first time and
- thereafter. This reduces the size of the code by about 2K bytes, in
- exchange for a little execution time. However, BUILDFIXED should not be
- used for threaded applications, since the rewriting of the tables and virgin
- may not be thread-safe.
- */
-local void fixedtables(state)
-struct inflate_state FAR *state;
-{
-#ifdef BUILDFIXED
- static int virgin = 1;
- static code *lenfix, *distfix;
- static code fixed[544];
-
- /* build fixed huffman tables if first call (may not be thread safe) */
- if (virgin) {
- unsigned sym, bits;
- static code *next;
-
- /* literal/length table */
- sym = 0;
- while (sym < 144) state->lens[sym++] = 8;
- while (sym < 256) state->lens[sym++] = 9;
- while (sym < 280) state->lens[sym++] = 7;
- while (sym < 288) state->lens[sym++] = 8;
- next = fixed;
- lenfix = next;
- bits = 9;
- inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
-
- /* distance table */
- sym = 0;
- while (sym < 32) state->lens[sym++] = 5;
- distfix = next;
- bits = 5;
- inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
-
- /* do this just once */
- virgin = 0;
- }
-#else /* !BUILDFIXED */
-# include "inffixed.h"
-#endif /* BUILDFIXED */
- state->lencode = lenfix;
- state->lenbits = 9;
- state->distcode = distfix;
- state->distbits = 5;
-}
-
-/* Macros for inflateBack(): */
-
-/* Load returned state from inflate_fast() */
-#define LOAD() \
- do { \
- put = strm->next_out; \
- left = strm->avail_out; \
- next = strm->next_in; \
- have = strm->avail_in; \
- hold = state->hold; \
- bits = state->bits; \
- } while (0)
-
-/* Set state from registers for inflate_fast() */
-#define RESTORE() \
- do { \
- strm->next_out = put; \
- strm->avail_out = left; \
- strm->next_in = next; \
- strm->avail_in = have; \
- state->hold = hold; \
- state->bits = bits; \
- } while (0)
-
-/* Clear the input bit accumulator */
-#define INITBITS() \
- do { \
- hold = 0; \
- bits = 0; \
- } while (0)
-
-/* Assure that some input is available. If input is requested, but denied,
- then return a Z_BUF_ERROR from inflateBack(). */
-#define PULL() \
- do { \
- if (have == 0) { \
- have = in(in_desc, &next); \
- if (have == 0) { \
- next = Z_NULL; \
- ret = Z_BUF_ERROR; \
- goto inf_leave; \
- } \
- } \
- } while (0)
-
-/* Get a byte of input into the bit accumulator, or return from inflateBack()
- with an error if there is no input available. */
-#define PULLBYTE() \
- do { \
- PULL(); \
- have--; \
- hold += (unsigned long)(*next++) << bits; \
- bits += 8; \
- } while (0)
-
-/* Assure that there are at least n bits in the bit accumulator. If there is
- not enough available input to do that, then return from inflateBack() with
- an error. */
-#define NEEDBITS(n) \
- do { \
- while (bits < (unsigned)(n)) \
- PULLBYTE(); \
- } while (0)
-
-/* Return the low n bits of the bit accumulator (n < 16) */
-#define BITS(n) \
- ((unsigned)hold & ((1U << (n)) - 1))
-
-/* Remove n bits from the bit accumulator */
-#define DROPBITS(n) \
- do { \
- hold >>= (n); \
- bits -= (unsigned)(n); \
- } while (0)
-
-/* Remove zero to seven bits as needed to go to a byte boundary */
-#define BYTEBITS() \
- do { \
- hold >>= bits & 7; \
- bits -= bits & 7; \
- } while (0)
-
-/* Assure that some output space is available, by writing out the window
- if it's full. If the write fails, return from inflateBack() with a
- Z_BUF_ERROR. */
-#define ROOM() \
- do { \
- if (left == 0) { \
- put = state->window; \
- left = state->wsize; \
- state->whave = left; \
- if (out(out_desc, put, left)) { \
- ret = Z_BUF_ERROR; \
- goto inf_leave; \
- } \
- } \
- } while (0)
-
-/*
- strm provides the memory allocation functions and window buffer on input,
- and provides information on the unused input on return. For Z_DATA_ERROR
- returns, strm will also provide an error message.
-
- in() and out() are the call-back input and output functions. When
- inflateBack() needs more input, it calls in(). When inflateBack() has
- filled the window with output, or when it completes with data in the
- window, it calls out() to write out the data. The application must not
- change the provided input until in() is called again or inflateBack()
- returns. The application must not change the window/output buffer until
- inflateBack() returns.
-
- in() and out() are called with a descriptor parameter provided in the
- inflateBack() call. This parameter can be a structure that provides the
- information required to do the read or write, as well as accumulated
- information on the input and output such as totals and check values.
-
- in() should return zero on failure. out() should return non-zero on
- failure. If either in() or out() fails, than inflateBack() returns a
- Z_BUF_ERROR. strm->next_in can be checked for Z_NULL to see whether it
- was in() or out() that caused in the error. Otherwise, inflateBack()
- returns Z_STREAM_END on success, Z_DATA_ERROR for an deflate format
- error, or Z_MEM_ERROR if it could not allocate memory for the state.
- inflateBack() can also return Z_STREAM_ERROR if the input parameters
- are not correct, i.e. strm is Z_NULL or the state was not initialized.
- */
-int ZEXPORT inflateBack(strm, in, in_desc, out, out_desc)
-z_streamp strm;
-in_func in;
-void FAR *in_desc;
-out_func out;
-void FAR *out_desc;
-{
- struct inflate_state FAR *state;
- z_const unsigned char FAR *next; /* next input */
- unsigned char FAR *put; /* next output */
- unsigned have, left; /* available input and output */
- unsigned long hold; /* bit buffer */
- unsigned bits; /* bits in bit buffer */
- unsigned copy; /* number of stored or match bytes to copy */
- unsigned char FAR *from; /* where to copy match bytes from */
- code here; /* current decoding table entry */
- code last; /* parent table entry */
- unsigned len; /* length to copy for repeats, bits to drop */
- int ret; /* return code */
- static const unsigned short order[19] = /* permutation of code lengths */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
- /* Check that the strm exists and that the state was initialized */
- if (strm == Z_NULL || strm->state == Z_NULL)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
-
- /* Reset the state */
- strm->msg = Z_NULL;
- state->mode = TYPE;
- state->last = 0;
- state->whave = 0;
- next = strm->next_in;
- have = next != Z_NULL ? strm->avail_in : 0;
- hold = 0;
- bits = 0;
- put = state->window;
- left = state->wsize;
-
- /* Inflate until end of block marked as last */
- for (;;)
- switch (state->mode) {
- case TYPE:
- /* determine and dispatch block type */
- if (state->last) {
- BYTEBITS();
- state->mode = DONE;
- break;
- }
- NEEDBITS(3);
- state->last = BITS(1);
- DROPBITS(1);
- switch (BITS(2)) {
- case 0: /* stored block */
- Tracev((stderr, "inflate: stored block%s\n",
- state->last ? " (last)" : ""));
- state->mode = STORED;
- break;
- case 1: /* fixed block */
- fixedtables(state);
- Tracev((stderr, "inflate: fixed codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = LEN; /* decode codes */
- break;
- case 2: /* dynamic block */
- Tracev((stderr, "inflate: dynamic codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = TABLE;
- break;
- case 3:
- strm->msg = (char *)"invalid block type";
- state->mode = BAD;
- }
- DROPBITS(2);
- break;
-
- case STORED:
- /* get and verify stored block length */
- BYTEBITS(); /* go to byte boundary */
- NEEDBITS(32);
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
- strm->msg = (char *)"invalid stored block lengths";
- state->mode = BAD;
- break;
- }
- state->length = (unsigned)hold & 0xffff;
- Tracev((stderr, "inflate: stored length %u\n",
- state->length));
- INITBITS();
-
- /* copy stored block from input to output */
- while (state->length != 0) {
- copy = state->length;
- PULL();
- ROOM();
- if (copy > have) copy = have;
- if (copy > left) copy = left;
- zmemcpy(put, next, copy);
- have -= copy;
- next += copy;
- left -= copy;
- put += copy;
- state->length -= copy;
- }
- Tracev((stderr, "inflate: stored end\n"));
- state->mode = TYPE;
- break;
-
- case TABLE:
- /* get dynamic table entries descriptor */
- NEEDBITS(14);
- state->nlen = BITS(5) + 257;
- DROPBITS(5);
- state->ndist = BITS(5) + 1;
- DROPBITS(5);
- state->ncode = BITS(4) + 4;
- DROPBITS(4);
-#ifndef PKZIP_BUG_WORKAROUND
- if (state->nlen > 286 || state->ndist > 30) {
- strm->msg = (char *)"too many length or distance symbols";
- state->mode = BAD;
- break;
- }
-#endif
- Tracev((stderr, "inflate: table sizes ok\n"));
-
- /* get code length code lengths (not a typo) */
- state->have = 0;
- while (state->have < state->ncode) {
- NEEDBITS(3);
- state->lens[order[state->have++]] = (unsigned short)BITS(3);
- DROPBITS(3);
- }
- while (state->have < 19)
- state->lens[order[state->have++]] = 0;
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 7;
- ret = inflate_table(CODES, state->lens, 19, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid code lengths set";
- state->mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: code lengths ok\n"));
-
- /* get length and distance code code lengths */
- state->have = 0;
- while (state->have < state->nlen + state->ndist) {
- for (;;) {
- here = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(here.bits) <= bits) break;
- PULLBYTE();
- }
- if (here.val < 16) {
- DROPBITS(here.bits);
- state->lens[state->have++] = here.val;
- }
- else {
- if (here.val == 16) {
- NEEDBITS(here.bits + 2);
- DROPBITS(here.bits);
- if (state->have == 0) {
- strm->msg = (char *)"invalid bit length repeat";
- state->mode = BAD;
- break;
- }
- len = (unsigned)(state->lens[state->have - 1]);
- copy = 3 + BITS(2);
- DROPBITS(2);
- }
- else if (here.val == 17) {
- NEEDBITS(here.bits + 3);
- DROPBITS(here.bits);
- len = 0;
- copy = 3 + BITS(3);
- DROPBITS(3);
- }
- else {
- NEEDBITS(here.bits + 7);
- DROPBITS(here.bits);
- len = 0;
- copy = 11 + BITS(7);
- DROPBITS(7);
- }
- if (state->have + copy > state->nlen + state->ndist) {
- strm->msg = (char *)"invalid bit length repeat";
- state->mode = BAD;
- break;
- }
- while (copy--)
- state->lens[state->have++] = (unsigned short)len;
- }
- }
-
- /* handle error breaks in while */
- if (state->mode == BAD) break;
-
- /* check for end-of-block code (better have one) */
- if (state->lens[256] == 0) {
- strm->msg = (char *)"invalid code -- missing end-of-block";
- state->mode = BAD;
- break;
- }
-
- /* build code tables -- note: do not change the lenbits or distbits
- values here (9 and 6) without reading the comments in inftrees.h
- concerning the ENOUGH constants, which depend on those values */
- state->next = state->codes;
- state->lencode = (code const FAR *)(state->next);
- state->lenbits = 9;
- ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid literal/lengths set";
- state->mode = BAD;
- break;
- }
- state->distcode = (code const FAR *)(state->next);
- state->distbits = 6;
- ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
- &(state->next), &(state->distbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid distances set";
- state->mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: codes ok\n"));
- state->mode = LEN;
-
- case LEN:
- /* use inflate_fast() if we have enough input and output */
- if (have >= 6 && left >= 258) {
- RESTORE();
- if (state->whave < state->wsize)
- state->whave = state->wsize - left;
- inflate_fast(strm, state->wsize);
- LOAD();
- break;
- }
-
- /* get a literal, length, or end-of-block code */
- for (;;) {
- here = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(here.bits) <= bits) break;
- PULLBYTE();
- }
- if (here.op && (here.op & 0xf0) == 0) {
- last = here;
- for (;;) {
- here = state->lencode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + here.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(here.bits);
- state->length = (unsigned)here.val;
-
- /* process literal */
- if (here.op == 0) {
- Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", here.val));
- ROOM();
- *put++ = (unsigned char)(state->length);
- left--;
- state->mode = LEN;
- break;
- }
-
- /* process end of block */
- if (here.op & 32) {
- Tracevv((stderr, "inflate: end of block\n"));
- state->mode = TYPE;
- break;
- }
-
- /* invalid code */
- if (here.op & 64) {
- strm->msg = (char *)"invalid literal/length code";
- state->mode = BAD;
- break;
- }
-
- /* length code -- get extra bits, if any */
- state->extra = (unsigned)(here.op) & 15;
- if (state->extra != 0) {
- NEEDBITS(state->extra);
- state->length += BITS(state->extra);
- DROPBITS(state->extra);
- }
- Tracevv((stderr, "inflate: length %u\n", state->length));
-
- /* get distance code */
- for (;;) {
- here = state->distcode[BITS(state->distbits)];
- if ((unsigned)(here.bits) <= bits) break;
- PULLBYTE();
- }
- if ((here.op & 0xf0) == 0) {
- last = here;
- for (;;) {
- here = state->distcode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + here.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- }
- DROPBITS(here.bits);
- if (here.op & 64) {
- strm->msg = (char *)"invalid distance code";
- state->mode = BAD;
- break;
- }
- state->offset = (unsigned)here.val;
-
- /* get distance extra bits, if any */
- state->extra = (unsigned)(here.op) & 15;
- if (state->extra != 0) {
- NEEDBITS(state->extra);
- state->offset += BITS(state->extra);
- DROPBITS(state->extra);
- }
- if (state->offset > state->wsize - (state->whave < state->wsize ?
- left : 0)) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
- Tracevv((stderr, "inflate: distance %u\n", state->offset));
-
- /* copy match from window to output */
- do {
- ROOM();
- copy = state->wsize - state->offset;
- if (copy < left) {
- from = put + copy;
- copy = left - copy;
- }
- else {
- from = put - state->offset;
- copy = left;
- }
- if (copy > state->length) copy = state->length;
- state->length -= copy;
- left -= copy;
- do {
- *put++ = *from++;
- } while (--copy);
- } while (state->length != 0);
- break;
-
- case DONE:
- /* inflate stream terminated properly -- write leftover output */
- ret = Z_STREAM_END;
- if (left < state->wsize) {
- if (out(out_desc, state->window, state->wsize - left))
- ret = Z_BUF_ERROR;
- }
- goto inf_leave;
-
- case BAD:
- ret = Z_DATA_ERROR;
- goto inf_leave;
-
- default: /* can't happen, but makes compilers happy */
- ret = Z_STREAM_ERROR;
- goto inf_leave;
- }
-
- /* Return unused input */
- inf_leave:
- strm->next_in = next;
- strm->avail_in = have;
- return ret;
-}
-
-int ZEXPORT inflateBackEnd(strm)
-z_streamp strm;
-{
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
- Tracev((stderr, "inflate: end\n"));
- return Z_OK;
-}
+++ /dev/null
-/* inffast.c -- fast decoding
- * Copyright (C) 1995-2008, 2010, 2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-#ifndef ASMINF
-
-/* Allow machine dependent optimization for post-increment or pre-increment.
- Based on testing to date,
- Pre-increment preferred for:
- - PowerPC G3 (Adler)
- - MIPS R5000 (Randers-Pehrson)
- Post-increment preferred for:
- - none
- No measurable difference:
- - Pentium III (Anderson)
- - M68060 (Nikl)
- */
-#ifdef POSTINC
-# define OFF 0
-# define PUP(a) *(a)++
-#else
-# define OFF 1
-# define PUP(a) *++(a)
-#endif
-
-/*
- Decode literal, length, and distance codes and write out the resulting
- literal and match bytes until either not enough input or output is
- available, an end-of-block is encountered, or a data error is encountered.
- When large enough input and output buffers are supplied to inflate(), for
- example, a 16K input buffer and a 64K output buffer, more than 95% of the
- inflate execution time is spent in this routine.
-
- Entry assumptions:
-
- state->mode == LEN
- strm->avail_in >= 6
- strm->avail_out >= 258
- start >= strm->avail_out
- state->bits < 8
-
- On return, state->mode is one of:
-
- LEN -- ran out of enough output space or enough available input
- TYPE -- reached end of block code, inflate() to interpret next block
- BAD -- error in block data
-
- Notes:
-
- - The maximum input bits used by a length/distance pair is 15 bits for the
- length code, 5 bits for the length extra, 15 bits for the distance code,
- and 13 bits for the distance extra. This totals 48 bits, or six bytes.
- Therefore if strm->avail_in >= 6, then there is enough input to avoid
- checking for available input while decoding.
-
- - The maximum bytes that a single length/distance pair can output is 258
- bytes, which is the maximum length that can be coded. inflate_fast()
- requires strm->avail_out >= 258 for each loop to avoid checking for
- output space.
- */
-void ZLIB_INTERNAL inflate_fast(strm, start)
-z_streamp strm;
-unsigned start; /* inflate()'s starting value for strm->avail_out */
-{
- struct inflate_state FAR *state;
- z_const unsigned char FAR *in; /* local strm->next_in */
- z_const unsigned char FAR *last; /* have enough input while in < last */
- unsigned char FAR *out; /* local strm->next_out */
- unsigned char FAR *beg; /* inflate()'s initial strm->next_out */
- unsigned char FAR *end; /* while out < end, enough space available */
-#ifdef INFLATE_STRICT
- unsigned dmax; /* maximum distance from zlib header */
-#endif
- unsigned wsize; /* window size or zero if not using window */
- unsigned whave; /* valid bytes in the window */
- unsigned wnext; /* window write index */
- unsigned char FAR *window; /* allocated sliding window, if wsize != 0 */
- unsigned long hold; /* local strm->hold */
- unsigned bits; /* local strm->bits */
- code const FAR *lcode; /* local strm->lencode */
- code const FAR *dcode; /* local strm->distcode */
- unsigned lmask; /* mask for first level of length codes */
- unsigned dmask; /* mask for first level of distance codes */
- code here; /* retrieved table entry */
- unsigned op; /* code bits, operation, extra bits, or */
- /* window position, window bytes to copy */
- unsigned len; /* match length, unused bytes */
- unsigned dist; /* match distance */
- unsigned char FAR *from; /* where to copy match from */
-
- /* copy state to local variables */
- state = (struct inflate_state FAR *)strm->state;
- in = strm->next_in - OFF;
- last = in + (strm->avail_in - 5);
- out = strm->next_out - OFF;
- beg = out - (start - strm->avail_out);
- end = out + (strm->avail_out - 257);
-#ifdef INFLATE_STRICT
- dmax = state->dmax;
-#endif
- wsize = state->wsize;
- whave = state->whave;
- wnext = state->wnext;
- window = state->window;
- hold = state->hold;
- bits = state->bits;
- lcode = state->lencode;
- dcode = state->distcode;
- lmask = (1U << state->lenbits) - 1;
- dmask = (1U << state->distbits) - 1;
-
- /* decode literals and length/distances until end-of-block or not enough
- input data or output space */
- do {
- if (bits < 15) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- here = lcode[hold & lmask];
- dolen:
- op = (unsigned)(here.bits);
- hold >>= op;
- bits -= op;
- op = (unsigned)(here.op);
- if (op == 0) { /* literal */
- Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", here.val));
- PUP(out) = (unsigned char)(here.val);
- }
- else if (op & 16) { /* length base */
- len = (unsigned)(here.val);
- op &= 15; /* number of extra bits */
- if (op) {
- if (bits < op) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- len += (unsigned)hold & ((1U << op) - 1);
- hold >>= op;
- bits -= op;
- }
- Tracevv((stderr, "inflate: length %u\n", len));
- if (bits < 15) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- here = dcode[hold & dmask];
- dodist:
- op = (unsigned)(here.bits);
- hold >>= op;
- bits -= op;
- op = (unsigned)(here.op);
- if (op & 16) { /* distance base */
- dist = (unsigned)(here.val);
- op &= 15; /* number of extra bits */
- if (bits < op) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- if (bits < op) {
- hold += (unsigned long)(PUP(in)) << bits;
- bits += 8;
- }
- }
- dist += (unsigned)hold & ((1U << op) - 1);
-#ifdef INFLATE_STRICT
- if (dist > dmax) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
-#endif
- hold >>= op;
- bits -= op;
- Tracevv((stderr, "inflate: distance %u\n", dist));
- op = (unsigned)(out - beg); /* max distance in output */
- if (dist > op) { /* see if copy from window */
- op = dist - op; /* distance back in window */
- if (op > whave) {
- if (state->sane) {
- strm->msg =
- (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
-#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
- if (len <= op - whave) {
- do {
- PUP(out) = 0;
- } while (--len);
- continue;
- }
- len -= op - whave;
- do {
- PUP(out) = 0;
- } while (--op > whave);
- if (op == 0) {
- from = out - dist;
- do {
- PUP(out) = PUP(from);
- } while (--len);
- continue;
- }
-#endif
- }
- from = window - OFF;
- if (wnext == 0) { /* very common case */
- from += wsize - op;
- if (op < len) { /* some from window */
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = out - dist; /* rest from output */
- }
- }
- else if (wnext < op) { /* wrap around window */
- from += wsize + wnext - op;
- op -= wnext;
- if (op < len) { /* some from end of window */
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = window - OFF;
- if (wnext < len) { /* some from start of window */
- op = wnext;
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = out - dist; /* rest from output */
- }
- }
- }
- else { /* contiguous in window */
- from += wnext - op;
- if (op < len) { /* some from window */
- len -= op;
- do {
- PUP(out) = PUP(from);
- } while (--op);
- from = out - dist; /* rest from output */
- }
- }
- while (len > 2) {
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- len -= 3;
- }
- if (len) {
- PUP(out) = PUP(from);
- if (len > 1)
- PUP(out) = PUP(from);
- }
- }
- else {
- from = out - dist; /* copy direct from output */
- do { /* minimum length is three */
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- PUP(out) = PUP(from);
- len -= 3;
- } while (len > 2);
- if (len) {
- PUP(out) = PUP(from);
- if (len > 1)
- PUP(out) = PUP(from);
- }
- }
- }
- else if ((op & 64) == 0) { /* 2nd level distance code */
- here = dcode[here.val + (hold & ((1U << op) - 1))];
- goto dodist;
- }
- else {
- strm->msg = (char *)"invalid distance code";
- state->mode = BAD;
- break;
- }
- }
- else if ((op & 64) == 0) { /* 2nd level length code */
- here = lcode[here.val + (hold & ((1U << op) - 1))];
- goto dolen;
- }
- else if (op & 32) { /* end-of-block */
- Tracevv((stderr, "inflate: end of block\n"));
- state->mode = TYPE;
- break;
- }
- else {
- strm->msg = (char *)"invalid literal/length code";
- state->mode = BAD;
- break;
- }
- } while (in < last && out < end);
-
- /* return unused bytes (on entry, bits < 8, so in won't go too far back) */
- len = bits >> 3;
- in -= len;
- bits -= len << 3;
- hold &= (1U << bits) - 1;
-
- /* update state and return */
- strm->next_in = in + OFF;
- strm->next_out = out + OFF;
- strm->avail_in = (unsigned)(in < last ? 5 + (last - in) : 5 - (in - last));
- strm->avail_out = (unsigned)(out < end ?
- 257 + (end - out) : 257 - (out - end));
- state->hold = hold;
- state->bits = bits;
- return;
-}
-
-/*
- inflate_fast() speedups that turned out slower (on a PowerPC G3 750CXe):
- - Using bit fields for code structure
- - Different op definition to avoid & for extra bits (do & for table bits)
- - Three separate decoding do-loops for direct, window, and wnext == 0
- - Special case for distance > 1 copies to do overlapped load and store copy
- - Explicit branch predictions (based on measured branch probabilities)
- - Deferring match copy and interspersed it with decoding subsequent codes
- - Swapping literal/length else
- - Swapping window/direct else
- - Larger unrolled copy loops (three is about right)
- - Moving len -= 3 statement into middle of loop
- */
-
-#endif /* !ASMINF */
+++ /dev/null
-/* inffast.h -- header to use inffast.c
- * Copyright (C) 1995-2003, 2010 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-void ZLIB_INTERNAL inflate_fast OF((z_streamp strm, unsigned start));
+++ /dev/null
- /* inffixed.h -- table for decoding fixed codes
- * Generated automatically by makefixed().
- */
-
- /* WARNING: this file should *not* be used by applications.
- It is part of the implementation of this library and is
- subject to change. Applications should only use zlib.h.
- */
-
- static const code lenfix[512] = {
- {96,7,0},{0,8,80},{0,8,16},{20,8,115},{18,7,31},{0,8,112},{0,8,48},
- {0,9,192},{16,7,10},{0,8,96},{0,8,32},{0,9,160},{0,8,0},{0,8,128},
- {0,8,64},{0,9,224},{16,7,6},{0,8,88},{0,8,24},{0,9,144},{19,7,59},
- {0,8,120},{0,8,56},{0,9,208},{17,7,17},{0,8,104},{0,8,40},{0,9,176},
- {0,8,8},{0,8,136},{0,8,72},{0,9,240},{16,7,4},{0,8,84},{0,8,20},
- {21,8,227},{19,7,43},{0,8,116},{0,8,52},{0,9,200},{17,7,13},{0,8,100},
- {0,8,36},{0,9,168},{0,8,4},{0,8,132},{0,8,68},{0,9,232},{16,7,8},
- {0,8,92},{0,8,28},{0,9,152},{20,7,83},{0,8,124},{0,8,60},{0,9,216},
- {18,7,23},{0,8,108},{0,8,44},{0,9,184},{0,8,12},{0,8,140},{0,8,76},
- {0,9,248},{16,7,3},{0,8,82},{0,8,18},{21,8,163},{19,7,35},{0,8,114},
- {0,8,50},{0,9,196},{17,7,11},{0,8,98},{0,8,34},{0,9,164},{0,8,2},
- {0,8,130},{0,8,66},{0,9,228},{16,7,7},{0,8,90},{0,8,26},{0,9,148},
- {20,7,67},{0,8,122},{0,8,58},{0,9,212},{18,7,19},{0,8,106},{0,8,42},
- {0,9,180},{0,8,10},{0,8,138},{0,8,74},{0,9,244},{16,7,5},{0,8,86},
- {0,8,22},{64,8,0},{19,7,51},{0,8,118},{0,8,54},{0,9,204},{17,7,15},
- {0,8,102},{0,8,38},{0,9,172},{0,8,6},{0,8,134},{0,8,70},{0,9,236},
- {16,7,9},{0,8,94},{0,8,30},{0,9,156},{20,7,99},{0,8,126},{0,8,62},
- {0,9,220},{18,7,27},{0,8,110},{0,8,46},{0,9,188},{0,8,14},{0,8,142},
- {0,8,78},{0,9,252},{96,7,0},{0,8,81},{0,8,17},{21,8,131},{18,7,31},
- {0,8,113},{0,8,49},{0,9,194},{16,7,10},{0,8,97},{0,8,33},{0,9,162},
- {0,8,1},{0,8,129},{0,8,65},{0,9,226},{16,7,6},{0,8,89},{0,8,25},
- {0,9,146},{19,7,59},{0,8,121},{0,8,57},{0,9,210},{17,7,17},{0,8,105},
- {0,8,41},{0,9,178},{0,8,9},{0,8,137},{0,8,73},{0,9,242},{16,7,4},
- {0,8,85},{0,8,21},{16,8,258},{19,7,43},{0,8,117},{0,8,53},{0,9,202},
- {17,7,13},{0,8,101},{0,8,37},{0,9,170},{0,8,5},{0,8,133},{0,8,69},
- {0,9,234},{16,7,8},{0,8,93},{0,8,29},{0,9,154},{20,7,83},{0,8,125},
- {0,8,61},{0,9,218},{18,7,23},{0,8,109},{0,8,45},{0,9,186},{0,8,13},
- {0,8,141},{0,8,77},{0,9,250},{16,7,3},{0,8,83},{0,8,19},{21,8,195},
- {19,7,35},{0,8,115},{0,8,51},{0,9,198},{17,7,11},{0,8,99},{0,8,35},
- {0,9,166},{0,8,3},{0,8,131},{0,8,67},{0,9,230},{16,7,7},{0,8,91},
- {0,8,27},{0,9,150},{20,7,67},{0,8,123},{0,8,59},{0,9,214},{18,7,19},
- {0,8,107},{0,8,43},{0,9,182},{0,8,11},{0,8,139},{0,8,75},{0,9,246},
- {16,7,5},{0,8,87},{0,8,23},{64,8,0},{19,7,51},{0,8,119},{0,8,55},
- {0,9,206},{17,7,15},{0,8,103},{0,8,39},{0,9,174},{0,8,7},{0,8,135},
- {0,8,71},{0,9,238},{16,7,9},{0,8,95},{0,8,31},{0,9,158},{20,7,99},
- {0,8,127},{0,8,63},{0,9,222},{18,7,27},{0,8,111},{0,8,47},{0,9,190},
- {0,8,15},{0,8,143},{0,8,79},{0,9,254},{96,7,0},{0,8,80},{0,8,16},
- {20,8,115},{18,7,31},{0,8,112},{0,8,48},{0,9,193},{16,7,10},{0,8,96},
- {0,8,32},{0,9,161},{0,8,0},{0,8,128},{0,8,64},{0,9,225},{16,7,6},
- {0,8,88},{0,8,24},{0,9,145},{19,7,59},{0,8,120},{0,8,56},{0,9,209},
- {17,7,17},{0,8,104},{0,8,40},{0,9,177},{0,8,8},{0,8,136},{0,8,72},
- {0,9,241},{16,7,4},{0,8,84},{0,8,20},{21,8,227},{19,7,43},{0,8,116},
- {0,8,52},{0,9,201},{17,7,13},{0,8,100},{0,8,36},{0,9,169},{0,8,4},
- {0,8,132},{0,8,68},{0,9,233},{16,7,8},{0,8,92},{0,8,28},{0,9,153},
- {20,7,83},{0,8,124},{0,8,60},{0,9,217},{18,7,23},{0,8,108},{0,8,44},
- {0,9,185},{0,8,12},{0,8,140},{0,8,76},{0,9,249},{16,7,3},{0,8,82},
- {0,8,18},{21,8,163},{19,7,35},{0,8,114},{0,8,50},{0,9,197},{17,7,11},
- {0,8,98},{0,8,34},{0,9,165},{0,8,2},{0,8,130},{0,8,66},{0,9,229},
- {16,7,7},{0,8,90},{0,8,26},{0,9,149},{20,7,67},{0,8,122},{0,8,58},
- {0,9,213},{18,7,19},{0,8,106},{0,8,42},{0,9,181},{0,8,10},{0,8,138},
- {0,8,74},{0,9,245},{16,7,5},{0,8,86},{0,8,22},{64,8,0},{19,7,51},
- {0,8,118},{0,8,54},{0,9,205},{17,7,15},{0,8,102},{0,8,38},{0,9,173},
- {0,8,6},{0,8,134},{0,8,70},{0,9,237},{16,7,9},{0,8,94},{0,8,30},
- {0,9,157},{20,7,99},{0,8,126},{0,8,62},{0,9,221},{18,7,27},{0,8,110},
- {0,8,46},{0,9,189},{0,8,14},{0,8,142},{0,8,78},{0,9,253},{96,7,0},
- {0,8,81},{0,8,17},{21,8,131},{18,7,31},{0,8,113},{0,8,49},{0,9,195},
- {16,7,10},{0,8,97},{0,8,33},{0,9,163},{0,8,1},{0,8,129},{0,8,65},
- {0,9,227},{16,7,6},{0,8,89},{0,8,25},{0,9,147},{19,7,59},{0,8,121},
- {0,8,57},{0,9,211},{17,7,17},{0,8,105},{0,8,41},{0,9,179},{0,8,9},
- {0,8,137},{0,8,73},{0,9,243},{16,7,4},{0,8,85},{0,8,21},{16,8,258},
- {19,7,43},{0,8,117},{0,8,53},{0,9,203},{17,7,13},{0,8,101},{0,8,37},
- {0,9,171},{0,8,5},{0,8,133},{0,8,69},{0,9,235},{16,7,8},{0,8,93},
- {0,8,29},{0,9,155},{20,7,83},{0,8,125},{0,8,61},{0,9,219},{18,7,23},
- {0,8,109},{0,8,45},{0,9,187},{0,8,13},{0,8,141},{0,8,77},{0,9,251},
- {16,7,3},{0,8,83},{0,8,19},{21,8,195},{19,7,35},{0,8,115},{0,8,51},
- {0,9,199},{17,7,11},{0,8,99},{0,8,35},{0,9,167},{0,8,3},{0,8,131},
- {0,8,67},{0,9,231},{16,7,7},{0,8,91},{0,8,27},{0,9,151},{20,7,67},
- {0,8,123},{0,8,59},{0,9,215},{18,7,19},{0,8,107},{0,8,43},{0,9,183},
- {0,8,11},{0,8,139},{0,8,75},{0,9,247},{16,7,5},{0,8,87},{0,8,23},
- {64,8,0},{19,7,51},{0,8,119},{0,8,55},{0,9,207},{17,7,15},{0,8,103},
- {0,8,39},{0,9,175},{0,8,7},{0,8,135},{0,8,71},{0,9,239},{16,7,9},
- {0,8,95},{0,8,31},{0,9,159},{20,7,99},{0,8,127},{0,8,63},{0,9,223},
- {18,7,27},{0,8,111},{0,8,47},{0,9,191},{0,8,15},{0,8,143},{0,8,79},
- {0,9,255}
- };
-
- static const code distfix[32] = {
- {16,5,1},{23,5,257},{19,5,17},{27,5,4097},{17,5,5},{25,5,1025},
- {21,5,65},{29,5,16385},{16,5,3},{24,5,513},{20,5,33},{28,5,8193},
- {18,5,9},{26,5,2049},{22,5,129},{64,5,0},{16,5,2},{23,5,385},
- {19,5,25},{27,5,6145},{17,5,7},{25,5,1537},{21,5,97},{29,5,24577},
- {16,5,4},{24,5,769},{20,5,49},{28,5,12289},{18,5,13},{26,5,3073},
- {22,5,193},{64,5,0}
- };
+++ /dev/null
-/* inflate.c -- zlib decompression
- * Copyright (C) 1995-2012 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * Change history:
- *
- * 1.2.beta0 24 Nov 2002
- * - First version -- complete rewrite of inflate to simplify code, avoid
- * creation of window when not needed, minimize use of window when it is
- * needed, make inffast.c even faster, implement gzip decoding, and to
- * improve code readability and style over the previous zlib inflate code
- *
- * 1.2.beta1 25 Nov 2002
- * - Use pointers for available input and output checking in inffast.c
- * - Remove input and output counters in inffast.c
- * - Change inffast.c entry and loop from avail_in >= 7 to >= 6
- * - Remove unnecessary second byte pull from length extra in inffast.c
- * - Unroll direct copy to three copies per loop in inffast.c
- *
- * 1.2.beta2 4 Dec 2002
- * - Change external routine names to reduce potential conflicts
- * - Correct filename to inffixed.h for fixed tables in inflate.c
- * - Make hbuf[] unsigned char to match parameter type in inflate.c
- * - Change strm->next_out[-state->offset] to *(strm->next_out - state->offset)
- * to avoid negation problem on Alphas (64 bit) in inflate.c
- *
- * 1.2.beta3 22 Dec 2002
- * - Add comments on state->bits assertion in inffast.c
- * - Add comments on op field in inftrees.h
- * - Fix bug in reuse of allocated window after inflateReset()
- * - Remove bit fields--back to byte structure for speed
- * - Remove distance extra == 0 check in inflate_fast()--only helps for lengths
- * - Change post-increments to pre-increments in inflate_fast(), PPC biased?
- * - Add compile time option, POSTINC, to use post-increments instead (Intel?)
- * - Make MATCH copy in inflate() much faster for when inflate_fast() not used
- * - Use local copies of stream next and avail values, as well as local bit
- * buffer and bit count in inflate()--for speed when inflate_fast() not used
- *
- * 1.2.beta4 1 Jan 2003
- * - Split ptr - 257 statements in inflate_table() to avoid compiler warnings
- * - Move a comment on output buffer sizes from inffast.c to inflate.c
- * - Add comments in inffast.c to introduce the inflate_fast() routine
- * - Rearrange window copies in inflate_fast() for speed and simplification
- * - Unroll last copy for window match in inflate_fast()
- * - Use local copies of window variables in inflate_fast() for speed
- * - Pull out common wnext == 0 case for speed in inflate_fast()
- * - Make op and len in inflate_fast() unsigned for consistency
- * - Add FAR to lcode and dcode declarations in inflate_fast()
- * - Simplified bad distance check in inflate_fast()
- * - Added inflateBackInit(), inflateBack(), and inflateBackEnd() in new
- * source file infback.c to provide a call-back interface to inflate for
- * programs like gzip and unzip -- uses window as output buffer to avoid
- * window copying
- *
- * 1.2.beta5 1 Jan 2003
- * - Improved inflateBack() interface to allow the caller to provide initial
- * input in strm.
- * - Fixed stored blocks bug in inflateBack()
- *
- * 1.2.beta6 4 Jan 2003
- * - Added comments in inffast.c on effectiveness of POSTINC
- * - Typecasting all around to reduce compiler warnings
- * - Changed loops from while (1) or do {} while (1) to for (;;), again to
- * make compilers happy
- * - Changed type of window in inflateBackInit() to unsigned char *
- *
- * 1.2.beta7 27 Jan 2003
- * - Changed many types to unsigned or unsigned short to avoid warnings
- * - Added inflateCopy() function
- *
- * 1.2.0 9 Mar 2003
- * - Changed inflateBack() interface to provide separate opaque descriptors
- * for the in() and out() functions
- * - Changed inflateBack() argument and in_func typedef to swap the length
- * and buffer address return values for the input function
- * - Check next_in and next_out for Z_NULL on entry to inflate()
- *
- * The history for versions after 1.2.0 are in ChangeLog in zlib distribution.
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-#include "inflate.h"
-#include "inffast.h"
-
-#ifdef MAKEFIXED
-# ifndef BUILDFIXED
-# define BUILDFIXED
-# endif
-#endif
-
-/* function prototypes */
-local void fixedtables OF((struct inflate_state FAR *state));
-local int updatewindow OF((z_streamp strm, const unsigned char FAR *end,
- unsigned copy));
-#ifdef BUILDFIXED
- void makefixed OF((void));
-#endif
-local unsigned syncsearch OF((unsigned FAR *have, const unsigned char FAR *buf,
- unsigned len));
-
-int ZEXPORT inflateResetKeep(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- strm->total_in = strm->total_out = state->total = 0;
- strm->msg = Z_NULL;
- if (state->wrap) /* to support ill-conceived Java test suite */
- strm->adler = state->wrap & 1;
- state->mode = HEAD;
- state->last = 0;
- state->havedict = 0;
- state->dmax = 32768U;
- state->head = Z_NULL;
- state->hold = 0;
- state->bits = 0;
- state->lencode = state->distcode = state->next = state->codes;
- state->sane = 1;
- state->back = -1;
- Tracev((stderr, "inflate: reset\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflateReset(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- state->wsize = 0;
- state->whave = 0;
- state->wnext = 0;
- return inflateResetKeep(strm);
-}
-
-int ZEXPORT inflateReset2(strm, windowBits)
-z_streamp strm;
-int windowBits;
-{
- int wrap;
- struct inflate_state FAR *state;
-
- /* get the state */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
-
- /* extract wrap request from windowBits parameter */
- if (windowBits < 0) {
- wrap = 0;
- windowBits = -windowBits;
- }
- else {
- wrap = (windowBits >> 4) + 1;
-#ifdef GUNZIP
- if (windowBits < 48)
- windowBits &= 15;
-#endif
- }
-
- /* set number of window bits, free window if different */
- if (windowBits && (windowBits < 8 || windowBits > 15))
- return Z_STREAM_ERROR;
- if (state->window != Z_NULL && state->wbits != (unsigned)windowBits) {
- ZFREE(strm, state->window);
- state->window = Z_NULL;
- }
-
- /* update state and reset the rest of it */
- state->wrap = wrap;
- state->wbits = (unsigned)windowBits;
- return inflateReset(strm);
-}
-
-int ZEXPORT inflateInit2_(strm, windowBits, version, stream_size)
-z_streamp strm;
-int windowBits;
-const char *version;
-int stream_size;
-{
- int ret;
- struct inflate_state FAR *state;
-
- if (version == Z_NULL || version[0] != ZLIB_VERSION[0] ||
- stream_size != (int)(sizeof(z_stream)))
- return Z_VERSION_ERROR;
- if (strm == Z_NULL) return Z_STREAM_ERROR;
- strm->msg = Z_NULL; /* in case we return an error */
- if (strm->zalloc == (alloc_func)0) {
-#ifdef Z_SOLO
- return Z_STREAM_ERROR;
-#else
- strm->zalloc = zcalloc;
- strm->opaque = (voidpf)0;
-#endif
- }
- if (strm->zfree == (free_func)0)
-#ifdef Z_SOLO
- return Z_STREAM_ERROR;
-#else
- strm->zfree = zcfree;
-#endif
- state = (struct inflate_state FAR *)
- ZALLOC(strm, 1, sizeof(struct inflate_state));
- if (state == Z_NULL) return Z_MEM_ERROR;
- Tracev((stderr, "inflate: allocated\n"));
- strm->state = (struct internal_state FAR *)state;
- state->window = Z_NULL;
- ret = inflateReset2(strm, windowBits);
- if (ret != Z_OK) {
- ZFREE(strm, state);
- strm->state = Z_NULL;
- }
- return ret;
-}
-
-int ZEXPORT inflateInit_(strm, version, stream_size)
-z_streamp strm;
-const char *version;
-int stream_size;
-{
- return inflateInit2_(strm, DEF_WBITS, version, stream_size);
-}
-
-int ZEXPORT inflatePrime(strm, bits, value)
-z_streamp strm;
-int bits;
-int value;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (bits < 0) {
- state->hold = 0;
- state->bits = 0;
- return Z_OK;
- }
- if (bits > 16 || state->bits + bits > 32) return Z_STREAM_ERROR;
- value &= (1L << bits) - 1;
- state->hold += value << state->bits;
- state->bits += bits;
- return Z_OK;
-}
-
-/*
- Return state with length and distance decoding tables and index sizes set to
- fixed code decoding. Normally this returns fixed tables from inffixed.h.
- If BUILDFIXED is defined, then instead this routine builds the tables the
- first time it's called, and returns those tables the first time and
- thereafter. This reduces the size of the code by about 2K bytes, in
- exchange for a little execution time. However, BUILDFIXED should not be
- used for threaded applications, since the rewriting of the tables and virgin
- may not be thread-safe.
- */
-local void fixedtables(state)
-struct inflate_state FAR *state;
-{
-#ifdef BUILDFIXED
- static int virgin = 1;
- static code *lenfix, *distfix;
- static code fixed[544];
-
- /* build fixed huffman tables if first call (may not be thread safe) */
- if (virgin) {
- unsigned sym, bits;
- static code *next;
-
- /* literal/length table */
- sym = 0;
- while (sym < 144) state->lens[sym++] = 8;
- while (sym < 256) state->lens[sym++] = 9;
- while (sym < 280) state->lens[sym++] = 7;
- while (sym < 288) state->lens[sym++] = 8;
- next = fixed;
- lenfix = next;
- bits = 9;
- inflate_table(LENS, state->lens, 288, &(next), &(bits), state->work);
-
- /* distance table */
- sym = 0;
- while (sym < 32) state->lens[sym++] = 5;
- distfix = next;
- bits = 5;
- inflate_table(DISTS, state->lens, 32, &(next), &(bits), state->work);
-
- /* do this just once */
- virgin = 0;
- }
-#else /* !BUILDFIXED */
-# include "inffixed.h"
-#endif /* BUILDFIXED */
- state->lencode = lenfix;
- state->lenbits = 9;
- state->distcode = distfix;
- state->distbits = 5;
-}
-
-#ifdef MAKEFIXED
-#include <stdio.h>
-
-/*
- Write out the inffixed.h that is #include'd above. Defining MAKEFIXED also
- defines BUILDFIXED, so the tables are built on the fly. makefixed() writes
- those tables to stdout, which would be piped to inffixed.h. A small program
- can simply call makefixed to do this:
-
- void makefixed(void);
-
- int main(void)
- {
- makefixed();
- return 0;
- }
-
- Then that can be linked with zlib built with MAKEFIXED defined and run:
-
- a.out > inffixed.h
- */
-void makefixed()
-{
- unsigned low, size;
- struct inflate_state state;
-
- fixedtables(&state);
- puts(" /* inffixed.h -- table for decoding fixed codes");
- puts(" * Generated automatically by makefixed().");
- puts(" */");
- puts("");
- puts(" /* WARNING: this file should *not* be used by applications.");
- puts(" It is part of the implementation of this library and is");
- puts(" subject to change. Applications should only use zlib.h.");
- puts(" */");
- puts("");
- size = 1U << 9;
- printf(" static const code lenfix[%u] = {", size);
- low = 0;
- for (;;) {
- if ((low % 7) == 0) printf("\n ");
- printf("{%u,%u,%d}", (low & 127) == 99 ? 64 : state.lencode[low].op,
- state.lencode[low].bits, state.lencode[low].val);
- if (++low == size) break;
- putchar(',');
- }
- puts("\n };");
- size = 1U << 5;
- printf("\n static const code distfix[%u] = {", size);
- low = 0;
- for (;;) {
- if ((low % 6) == 0) printf("\n ");
- printf("{%u,%u,%d}", state.distcode[low].op, state.distcode[low].bits,
- state.distcode[low].val);
- if (++low == size) break;
- putchar(',');
- }
- puts("\n };");
-}
-#endif /* MAKEFIXED */
-
-/*
- Update the window with the last wsize (normally 32K) bytes written before
- returning. If window does not exist yet, create it. This is only called
- when a window is already in use, or when output has been written during this
- inflate call, but the end of the deflate stream has not been reached yet.
- It is also called to create a window for dictionary data when a dictionary
- is loaded.
-
- Providing output buffers larger than 32K to inflate() should provide a speed
- advantage, since only the last 32K of output is copied to the sliding window
- upon return from inflate(), and since all distances after the first 32K of
- output will fall in the output data, making match copies simpler and faster.
- The advantage may be dependent on the size of the processor's data caches.
- */
-local int updatewindow(strm, end, copy)
-z_streamp strm;
-const Bytef *end;
-unsigned copy;
-{
- struct inflate_state FAR *state;
- unsigned dist;
-
- state = (struct inflate_state FAR *)strm->state;
-
- /* if it hasn't been done already, allocate space for the window */
- if (state->window == Z_NULL) {
- state->window = (unsigned char FAR *)
- ZALLOC(strm, 1U << state->wbits,
- sizeof(unsigned char));
- if (state->window == Z_NULL) return 1;
- }
-
- /* if window not in use yet, initialize */
- if (state->wsize == 0) {
- state->wsize = 1U << state->wbits;
- state->wnext = 0;
- state->whave = 0;
- }
-
- /* copy state->wsize or less output bytes into the circular window */
- if (copy >= state->wsize) {
- zmemcpy(state->window, end - state->wsize, state->wsize);
- state->wnext = 0;
- state->whave = state->wsize;
- }
- else {
- dist = state->wsize - state->wnext;
- if (dist > copy) dist = copy;
- zmemcpy(state->window + state->wnext, end - copy, dist);
- copy -= dist;
- if (copy) {
- zmemcpy(state->window, end - copy, copy);
- state->wnext = copy;
- state->whave = state->wsize;
- }
- else {
- state->wnext += dist;
- if (state->wnext == state->wsize) state->wnext = 0;
- if (state->whave < state->wsize) state->whave += dist;
- }
- }
- return 0;
-}
-
-/* Macros for inflate(): */
-
-/* check function to use adler32() for zlib or crc32() for gzip */
-#ifdef GUNZIP
-# define UPDATE(check, buf, len) \
- (state->flags ? crc32(check, buf, len) : adler32(check, buf, len))
-#else
-# define UPDATE(check, buf, len) adler32(check, buf, len)
-#endif
-
-/* check macros for header crc */
-#ifdef GUNZIP
-# define CRC2(check, word) \
- do { \
- hbuf[0] = (unsigned char)(word); \
- hbuf[1] = (unsigned char)((word) >> 8); \
- check = crc32(check, hbuf, 2); \
- } while (0)
-
-# define CRC4(check, word) \
- do { \
- hbuf[0] = (unsigned char)(word); \
- hbuf[1] = (unsigned char)((word) >> 8); \
- hbuf[2] = (unsigned char)((word) >> 16); \
- hbuf[3] = (unsigned char)((word) >> 24); \
- check = crc32(check, hbuf, 4); \
- } while (0)
-#endif
-
-/* Load registers with state in inflate() for speed */
-#define LOAD() \
- do { \
- put = strm->next_out; \
- left = strm->avail_out; \
- next = strm->next_in; \
- have = strm->avail_in; \
- hold = state->hold; \
- bits = state->bits; \
- } while (0)
-
-/* Restore state from registers in inflate() */
-#define RESTORE() \
- do { \
- strm->next_out = put; \
- strm->avail_out = left; \
- strm->next_in = next; \
- strm->avail_in = have; \
- state->hold = hold; \
- state->bits = bits; \
- } while (0)
-
-/* Clear the input bit accumulator */
-#define INITBITS() \
- do { \
- hold = 0; \
- bits = 0; \
- } while (0)
-
-/* Get a byte of input into the bit accumulator, or return from inflate()
- if there is no input available. */
-#define PULLBYTE() \
- do { \
- if (have == 0) goto inf_leave; \
- have--; \
- hold += (unsigned long)(*next++) << bits; \
- bits += 8; \
- } while (0)
-
-/* Assure that there are at least n bits in the bit accumulator. If there is
- not enough available input to do that, then return from inflate(). */
-#define NEEDBITS(n) \
- do { \
- while (bits < (unsigned)(n)) \
- PULLBYTE(); \
- } while (0)
-
-/* Return the low n bits of the bit accumulator (n < 16) */
-#define BITS(n) \
- ((unsigned)hold & ((1U << (n)) - 1))
-
-/* Remove n bits from the bit accumulator */
-#define DROPBITS(n) \
- do { \
- hold >>= (n); \
- bits -= (unsigned)(n); \
- } while (0)
-
-/* Remove zero to seven bits as needed to go to a byte boundary */
-#define BYTEBITS() \
- do { \
- hold >>= bits & 7; \
- bits -= bits & 7; \
- } while (0)
-
-/*
- inflate() uses a state machine to process as much input data and generate as
- much output data as possible before returning. The state machine is
- structured roughly as follows:
-
- for (;;) switch (state) {
- ...
- case STATEn:
- if (not enough input data or output space to make progress)
- return;
- ... make progress ...
- state = STATEm;
- break;
- ...
- }
-
- so when inflate() is called again, the same case is attempted again, and
- if the appropriate resources are provided, the machine proceeds to the
- next state. The NEEDBITS() macro is usually the way the state evaluates
- whether it can proceed or should return. NEEDBITS() does the return if
- the requested bits are not available. The typical use of the BITS macros
- is:
-
- NEEDBITS(n);
- ... do something with BITS(n) ...
- DROPBITS(n);
-
- where NEEDBITS(n) either returns from inflate() if there isn't enough
- input left to load n bits into the accumulator, or it continues. BITS(n)
- gives the low n bits in the accumulator. When done, DROPBITS(n) drops
- the low n bits off the accumulator. INITBITS() clears the accumulator
- and sets the number of available bits to zero. BYTEBITS() discards just
- enough bits to put the accumulator on a byte boundary. After BYTEBITS()
- and a NEEDBITS(8), then BITS(8) would return the next byte in the stream.
-
- NEEDBITS(n) uses PULLBYTE() to get an available byte of input, or to return
- if there is no input available. The decoding of variable length codes uses
- PULLBYTE() directly in order to pull just enough bytes to decode the next
- code, and no more.
-
- Some states loop until they get enough input, making sure that enough
- state information is maintained to continue the loop where it left off
- if NEEDBITS() returns in the loop. For example, want, need, and keep
- would all have to actually be part of the saved state in case NEEDBITS()
- returns:
-
- case STATEw:
- while (want < need) {
- NEEDBITS(n);
- keep[want++] = BITS(n);
- DROPBITS(n);
- }
- state = STATEx;
- case STATEx:
-
- As shown above, if the next state is also the next case, then the break
- is omitted.
-
- A state may also return if there is not enough output space available to
- complete that state. Those states are copying stored data, writing a
- literal byte, and copying a matching string.
-
- When returning, a "goto inf_leave" is used to update the total counters,
- update the check value, and determine whether any progress has been made
- during that inflate() call in order to return the proper return code.
- Progress is defined as a change in either strm->avail_in or strm->avail_out.
- When there is a window, goto inf_leave will update the window with the last
- output written. If a goto inf_leave occurs in the middle of decompression
- and there is no window currently, goto inf_leave will create one and copy
- output to the window for the next call of inflate().
-
- In this implementation, the flush parameter of inflate() only affects the
- return code (per zlib.h). inflate() always writes as much as possible to
- strm->next_out, given the space available and the provided input--the effect
- documented in zlib.h of Z_SYNC_FLUSH. Furthermore, inflate() always defers
- the allocation of and copying into a sliding window until necessary, which
- provides the effect documented in zlib.h for Z_FINISH when the entire input
- stream available. So the only thing the flush parameter actually does is:
- when flush is set to Z_FINISH, inflate() cannot return Z_OK. Instead it
- will return Z_BUF_ERROR if it has not reached the end of the stream.
- */
-
-int ZEXPORT inflate(strm, flush)
-z_streamp strm;
-int flush;
-{
- struct inflate_state FAR *state;
- z_const unsigned char FAR *next; /* next input */
- unsigned char FAR *put; /* next output */
- unsigned have, left; /* available input and output */
- unsigned long hold; /* bit buffer */
- unsigned bits; /* bits in bit buffer */
- unsigned in, out; /* save starting available input and output */
- unsigned copy; /* number of stored or match bytes to copy */
- unsigned char FAR *from; /* where to copy match bytes from */
- code here; /* current decoding table entry */
- code last; /* parent table entry */
- unsigned len; /* length to copy for repeats, bits to drop */
- int ret; /* return code */
-#ifdef GUNZIP
- unsigned char hbuf[4]; /* buffer for gzip header crc calculation */
-#endif
- static const unsigned short order[19] = /* permutation of code lengths */
- {16, 17, 18, 0, 8, 7, 9, 6, 10, 5, 11, 4, 12, 3, 13, 2, 14, 1, 15};
-
- if (strm == Z_NULL || strm->state == Z_NULL || strm->next_out == Z_NULL ||
- (strm->next_in == Z_NULL && strm->avail_in != 0))
- return Z_STREAM_ERROR;
-
- state = (struct inflate_state FAR *)strm->state;
- if (state->mode == TYPE) state->mode = TYPEDO; /* skip check */
- LOAD();
- in = have;
- out = left;
- ret = Z_OK;
- for (;;)
- switch (state->mode) {
- case HEAD:
- if (state->wrap == 0) {
- state->mode = TYPEDO;
- break;
- }
- NEEDBITS(16);
-#ifdef GUNZIP
- if ((state->wrap & 2) && hold == 0x8b1f) { /* gzip header */
- state->check = crc32(0L, Z_NULL, 0);
- CRC2(state->check, hold);
- INITBITS();
- state->mode = FLAGS;
- break;
- }
- state->flags = 0; /* expect zlib header */
- if (state->head != Z_NULL)
- state->head->done = -1;
- if (!(state->wrap & 1) || /* check if zlib header allowed */
-#else
- if (
-#endif
- ((BITS(8) << 8) + (hold >> 8)) % 31) {
- strm->msg = (char *)"incorrect header check";
- state->mode = BAD;
- break;
- }
- if (BITS(4) != Z_DEFLATED) {
- strm->msg = (char *)"unknown compression method";
- state->mode = BAD;
- break;
- }
- DROPBITS(4);
- len = BITS(4) + 8;
- if (state->wbits == 0)
- state->wbits = len;
- else if (len > state->wbits) {
- strm->msg = (char *)"invalid window size";
- state->mode = BAD;
- break;
- }
- state->dmax = 1U << len;
- Tracev((stderr, "inflate: zlib header ok\n"));
- strm->adler = state->check = adler32(0L, Z_NULL, 0);
- state->mode = hold & 0x200 ? DICTID : TYPE;
- INITBITS();
- break;
-#ifdef GUNZIP
- case FLAGS:
- NEEDBITS(16);
- state->flags = (int)(hold);
- if ((state->flags & 0xff) != Z_DEFLATED) {
- strm->msg = (char *)"unknown compression method";
- state->mode = BAD;
- break;
- }
- if (state->flags & 0xe000) {
- strm->msg = (char *)"unknown header flags set";
- state->mode = BAD;
- break;
- }
- if (state->head != Z_NULL)
- state->head->text = (int)((hold >> 8) & 1);
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- state->mode = TIME;
- case TIME:
- NEEDBITS(32);
- if (state->head != Z_NULL)
- state->head->time = hold;
- if (state->flags & 0x0200) CRC4(state->check, hold);
- INITBITS();
- state->mode = OS;
- case OS:
- NEEDBITS(16);
- if (state->head != Z_NULL) {
- state->head->xflags = (int)(hold & 0xff);
- state->head->os = (int)(hold >> 8);
- }
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- state->mode = EXLEN;
- case EXLEN:
- if (state->flags & 0x0400) {
- NEEDBITS(16);
- state->length = (unsigned)(hold);
- if (state->head != Z_NULL)
- state->head->extra_len = (unsigned)hold;
- if (state->flags & 0x0200) CRC2(state->check, hold);
- INITBITS();
- }
- else if (state->head != Z_NULL)
- state->head->extra = Z_NULL;
- state->mode = EXTRA;
- case EXTRA:
- if (state->flags & 0x0400) {
- copy = state->length;
- if (copy > have) copy = have;
- if (copy) {
- if (state->head != Z_NULL &&
- state->head->extra != Z_NULL) {
- len = state->head->extra_len - state->length;
- zmemcpy(state->head->extra + len, next,
- len + copy > state->head->extra_max ?
- state->head->extra_max - len : copy);
- }
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- state->length -= copy;
- }
- if (state->length) goto inf_leave;
- }
- state->length = 0;
- state->mode = NAME;
- case NAME:
- if (state->flags & 0x0800) {
- if (have == 0) goto inf_leave;
- copy = 0;
- do {
- len = (unsigned)(next[copy++]);
- if (state->head != Z_NULL &&
- state->head->name != Z_NULL &&
- state->length < state->head->name_max)
- state->head->name[state->length++] = len;
- } while (len && copy < have);
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- if (len) goto inf_leave;
- }
- else if (state->head != Z_NULL)
- state->head->name = Z_NULL;
- state->length = 0;
- state->mode = COMMENT;
- case COMMENT:
- if (state->flags & 0x1000) {
- if (have == 0) goto inf_leave;
- copy = 0;
- do {
- len = (unsigned)(next[copy++]);
- if (state->head != Z_NULL &&
- state->head->comment != Z_NULL &&
- state->length < state->head->comm_max)
- state->head->comment[state->length++] = len;
- } while (len && copy < have);
- if (state->flags & 0x0200)
- state->check = crc32(state->check, next, copy);
- have -= copy;
- next += copy;
- if (len) goto inf_leave;
- }
- else if (state->head != Z_NULL)
- state->head->comment = Z_NULL;
- state->mode = HCRC;
- case HCRC:
- if (state->flags & 0x0200) {
- NEEDBITS(16);
- if (hold != (state->check & 0xffff)) {
- strm->msg = (char *)"header crc mismatch";
- state->mode = BAD;
- break;
- }
- INITBITS();
- }
- if (state->head != Z_NULL) {
- state->head->hcrc = (int)((state->flags >> 9) & 1);
- state->head->done = 1;
- }
- strm->adler = state->check = crc32(0L, Z_NULL, 0);
- state->mode = TYPE;
- break;
-#endif
- case DICTID:
- NEEDBITS(32);
- strm->adler = state->check = ZSWAP32(hold);
- INITBITS();
- state->mode = DICT;
- case DICT:
- if (state->havedict == 0) {
- RESTORE();
- return Z_NEED_DICT;
- }
- strm->adler = state->check = adler32(0L, Z_NULL, 0);
- state->mode = TYPE;
- case TYPE:
- if (flush == Z_BLOCK || flush == Z_TREES) goto inf_leave;
- case TYPEDO:
- if (state->last) {
- BYTEBITS();
- state->mode = CHECK;
- break;
- }
- NEEDBITS(3);
- state->last = BITS(1);
- DROPBITS(1);
- switch (BITS(2)) {
- case 0: /* stored block */
- Tracev((stderr, "inflate: stored block%s\n",
- state->last ? " (last)" : ""));
- state->mode = STORED;
- break;
- case 1: /* fixed block */
- fixedtables(state);
- Tracev((stderr, "inflate: fixed codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = LEN_; /* decode codes */
- if (flush == Z_TREES) {
- DROPBITS(2);
- goto inf_leave;
- }
- break;
- case 2: /* dynamic block */
- Tracev((stderr, "inflate: dynamic codes block%s\n",
- state->last ? " (last)" : ""));
- state->mode = TABLE;
- break;
- case 3:
- strm->msg = (char *)"invalid block type";
- state->mode = BAD;
- }
- DROPBITS(2);
- break;
- case STORED:
- BYTEBITS(); /* go to byte boundary */
- NEEDBITS(32);
- if ((hold & 0xffff) != ((hold >> 16) ^ 0xffff)) {
- strm->msg = (char *)"invalid stored block lengths";
- state->mode = BAD;
- break;
- }
- state->length = (unsigned)hold & 0xffff;
- Tracev((stderr, "inflate: stored length %u\n",
- state->length));
- INITBITS();
- state->mode = COPY_;
- if (flush == Z_TREES) goto inf_leave;
- case COPY_:
- state->mode = COPY;
- case COPY:
- copy = state->length;
- if (copy) {
- if (copy > have) copy = have;
- if (copy > left) copy = left;
- if (copy == 0) goto inf_leave;
- zmemcpy(put, next, copy);
- have -= copy;
- next += copy;
- left -= copy;
- put += copy;
- state->length -= copy;
- break;
- }
- Tracev((stderr, "inflate: stored end\n"));
- state->mode = TYPE;
- break;
- case TABLE:
- NEEDBITS(14);
- state->nlen = BITS(5) + 257;
- DROPBITS(5);
- state->ndist = BITS(5) + 1;
- DROPBITS(5);
- state->ncode = BITS(4) + 4;
- DROPBITS(4);
-#ifndef PKZIP_BUG_WORKAROUND
- if (state->nlen > 286 || state->ndist > 30) {
- strm->msg = (char *)"too many length or distance symbols";
- state->mode = BAD;
- break;
- }
-#endif
- Tracev((stderr, "inflate: table sizes ok\n"));
- state->have = 0;
- state->mode = LENLENS;
- case LENLENS:
- while (state->have < state->ncode) {
- NEEDBITS(3);
- state->lens[order[state->have++]] = (unsigned short)BITS(3);
- DROPBITS(3);
- }
- while (state->have < 19)
- state->lens[order[state->have++]] = 0;
- state->next = state->codes;
- state->lencode = (const code FAR *)(state->next);
- state->lenbits = 7;
- ret = inflate_table(CODES, state->lens, 19, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid code lengths set";
- state->mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: code lengths ok\n"));
- state->have = 0;
- state->mode = CODELENS;
- case CODELENS:
- while (state->have < state->nlen + state->ndist) {
- for (;;) {
- here = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(here.bits) <= bits) break;
- PULLBYTE();
- }
- if (here.val < 16) {
- DROPBITS(here.bits);
- state->lens[state->have++] = here.val;
- }
- else {
- if (here.val == 16) {
- NEEDBITS(here.bits + 2);
- DROPBITS(here.bits);
- if (state->have == 0) {
- strm->msg = (char *)"invalid bit length repeat";
- state->mode = BAD;
- break;
- }
- len = state->lens[state->have - 1];
- copy = 3 + BITS(2);
- DROPBITS(2);
- }
- else if (here.val == 17) {
- NEEDBITS(here.bits + 3);
- DROPBITS(here.bits);
- len = 0;
- copy = 3 + BITS(3);
- DROPBITS(3);
- }
- else {
- NEEDBITS(here.bits + 7);
- DROPBITS(here.bits);
- len = 0;
- copy = 11 + BITS(7);
- DROPBITS(7);
- }
- if (state->have + copy > state->nlen + state->ndist) {
- strm->msg = (char *)"invalid bit length repeat";
- state->mode = BAD;
- break;
- }
- while (copy--)
- state->lens[state->have++] = (unsigned short)len;
- }
- }
-
- /* handle error breaks in while */
- if (state->mode == BAD) break;
-
- /* check for end-of-block code (better have one) */
- if (state->lens[256] == 0) {
- strm->msg = (char *)"invalid code -- missing end-of-block";
- state->mode = BAD;
- break;
- }
-
- /* build code tables -- note: do not change the lenbits or distbits
- values here (9 and 6) without reading the comments in inftrees.h
- concerning the ENOUGH constants, which depend on those values */
- state->next = state->codes;
- state->lencode = (const code FAR *)(state->next);
- state->lenbits = 9;
- ret = inflate_table(LENS, state->lens, state->nlen, &(state->next),
- &(state->lenbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid literal/lengths set";
- state->mode = BAD;
- break;
- }
- state->distcode = (const code FAR *)(state->next);
- state->distbits = 6;
- ret = inflate_table(DISTS, state->lens + state->nlen, state->ndist,
- &(state->next), &(state->distbits), state->work);
- if (ret) {
- strm->msg = (char *)"invalid distances set";
- state->mode = BAD;
- break;
- }
- Tracev((stderr, "inflate: codes ok\n"));
- state->mode = LEN_;
- if (flush == Z_TREES) goto inf_leave;
- case LEN_:
- state->mode = LEN;
- case LEN:
- if (have >= 6 && left >= 258) {
- RESTORE();
- inflate_fast(strm, out);
- LOAD();
- if (state->mode == TYPE)
- state->back = -1;
- break;
- }
- state->back = 0;
- for (;;) {
- here = state->lencode[BITS(state->lenbits)];
- if ((unsigned)(here.bits) <= bits) break;
- PULLBYTE();
- }
- if (here.op && (here.op & 0xf0) == 0) {
- last = here;
- for (;;) {
- here = state->lencode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + here.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- state->back += last.bits;
- }
- DROPBITS(here.bits);
- state->back += here.bits;
- state->length = (unsigned)here.val;
- if ((int)(here.op) == 0) {
- Tracevv((stderr, here.val >= 0x20 && here.val < 0x7f ?
- "inflate: literal '%c'\n" :
- "inflate: literal 0x%02x\n", here.val));
- state->mode = LIT;
- break;
- }
- if (here.op & 32) {
- Tracevv((stderr, "inflate: end of block\n"));
- state->back = -1;
- state->mode = TYPE;
- break;
- }
- if (here.op & 64) {
- strm->msg = (char *)"invalid literal/length code";
- state->mode = BAD;
- break;
- }
- state->extra = (unsigned)(here.op) & 15;
- state->mode = LENEXT;
- case LENEXT:
- if (state->extra) {
- NEEDBITS(state->extra);
- state->length += BITS(state->extra);
- DROPBITS(state->extra);
- state->back += state->extra;
- }
- Tracevv((stderr, "inflate: length %u\n", state->length));
- state->was = state->length;
- state->mode = DIST;
- case DIST:
- for (;;) {
- here = state->distcode[BITS(state->distbits)];
- if ((unsigned)(here.bits) <= bits) break;
- PULLBYTE();
- }
- if ((here.op & 0xf0) == 0) {
- last = here;
- for (;;) {
- here = state->distcode[last.val +
- (BITS(last.bits + last.op) >> last.bits)];
- if ((unsigned)(last.bits + here.bits) <= bits) break;
- PULLBYTE();
- }
- DROPBITS(last.bits);
- state->back += last.bits;
- }
- DROPBITS(here.bits);
- state->back += here.bits;
- if (here.op & 64) {
- strm->msg = (char *)"invalid distance code";
- state->mode = BAD;
- break;
- }
- state->offset = (unsigned)here.val;
- state->extra = (unsigned)(here.op) & 15;
- state->mode = DISTEXT;
- case DISTEXT:
- if (state->extra) {
- NEEDBITS(state->extra);
- state->offset += BITS(state->extra);
- DROPBITS(state->extra);
- state->back += state->extra;
- }
-#ifdef INFLATE_STRICT
- if (state->offset > state->dmax) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
-#endif
- Tracevv((stderr, "inflate: distance %u\n", state->offset));
- state->mode = MATCH;
- case MATCH:
- if (left == 0) goto inf_leave;
- copy = out - left;
- if (state->offset > copy) { /* copy from window */
- copy = state->offset - copy;
- if (copy > state->whave) {
- if (state->sane) {
- strm->msg = (char *)"invalid distance too far back";
- state->mode = BAD;
- break;
- }
-#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
- Trace((stderr, "inflate.c too far\n"));
- copy -= state->whave;
- if (copy > state->length) copy = state->length;
- if (copy > left) copy = left;
- left -= copy;
- state->length -= copy;
- do {
- *put++ = 0;
- } while (--copy);
- if (state->length == 0) state->mode = LEN;
- break;
-#endif
- }
- if (copy > state->wnext) {
- copy -= state->wnext;
- from = state->window + (state->wsize - copy);
- }
- else
- from = state->window + (state->wnext - copy);
- if (copy > state->length) copy = state->length;
- }
- else { /* copy from output */
- from = put - state->offset;
- copy = state->length;
- }
- if (copy > left) copy = left;
- left -= copy;
- state->length -= copy;
- do {
- *put++ = *from++;
- } while (--copy);
- if (state->length == 0) state->mode = LEN;
- break;
- case LIT:
- if (left == 0) goto inf_leave;
- *put++ = (unsigned char)(state->length);
- left--;
- state->mode = LEN;
- break;
- case CHECK:
- if (state->wrap) {
- NEEDBITS(32);
- out -= left;
- strm->total_out += out;
- state->total += out;
- if (out)
- strm->adler = state->check =
- UPDATE(state->check, put - out, out);
- out = left;
- if ((
-#ifdef GUNZIP
- state->flags ? hold :
-#endif
- ZSWAP32(hold)) != state->check) {
- strm->msg = (char *)"incorrect data check";
- state->mode = BAD;
- break;
- }
- INITBITS();
- Tracev((stderr, "inflate: check matches trailer\n"));
- }
-#ifdef GUNZIP
- state->mode = LENGTH;
- case LENGTH:
- if (state->wrap && state->flags) {
- NEEDBITS(32);
- if (hold != (state->total & 0xffffffffUL)) {
- strm->msg = (char *)"incorrect length check";
- state->mode = BAD;
- break;
- }
- INITBITS();
- Tracev((stderr, "inflate: length matches trailer\n"));
- }
-#endif
- state->mode = DONE;
- case DONE:
- ret = Z_STREAM_END;
- goto inf_leave;
- case BAD:
- ret = Z_DATA_ERROR;
- goto inf_leave;
- case MEM:
- return Z_MEM_ERROR;
- case SYNC:
- default:
- return Z_STREAM_ERROR;
- }
-
- /*
- Return from inflate(), updating the total counts and the check value.
- If there was no progress during the inflate() call, return a buffer
- error. Call updatewindow() to create and/or update the window state.
- Note: a memory error from inflate() is non-recoverable.
- */
- inf_leave:
- RESTORE();
- if (state->wsize || (out != strm->avail_out && state->mode < BAD &&
- (state->mode < CHECK || flush != Z_FINISH)))
- if (updatewindow(strm, strm->next_out, out - strm->avail_out)) {
- state->mode = MEM;
- return Z_MEM_ERROR;
- }
- in -= strm->avail_in;
- out -= strm->avail_out;
- strm->total_in += in;
- strm->total_out += out;
- state->total += out;
- if (state->wrap && out)
- strm->adler = state->check =
- UPDATE(state->check, strm->next_out - out, out);
- strm->data_type = state->bits + (state->last ? 64 : 0) +
- (state->mode == TYPE ? 128 : 0) +
- (state->mode == LEN_ || state->mode == COPY_ ? 256 : 0);
- if (((in == 0 && out == 0) || flush == Z_FINISH) && ret == Z_OK)
- ret = Z_BUF_ERROR;
- return ret;
-}
-
-int ZEXPORT inflateEnd(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
- if (strm == Z_NULL || strm->state == Z_NULL || strm->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (state->window != Z_NULL) ZFREE(strm, state->window);
- ZFREE(strm, strm->state);
- strm->state = Z_NULL;
- Tracev((stderr, "inflate: end\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflateGetDictionary(strm, dictionary, dictLength)
-z_streamp strm;
-Bytef *dictionary;
-uInt *dictLength;
-{
- struct inflate_state FAR *state;
-
- /* check state */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
-
- /* copy dictionary */
- if (state->whave && dictionary != Z_NULL) {
- zmemcpy(dictionary, state->window + state->wnext,
- state->whave - state->wnext);
- zmemcpy(dictionary + state->whave - state->wnext,
- state->window, state->wnext);
- }
- if (dictLength != Z_NULL)
- *dictLength = state->whave;
- return Z_OK;
-}
-
-int ZEXPORT inflateSetDictionary(strm, dictionary, dictLength)
-z_streamp strm;
-const Bytef *dictionary;
-uInt dictLength;
-{
- struct inflate_state FAR *state;
- unsigned long dictid;
- int ret;
-
- /* check state */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (state->wrap != 0 && state->mode != DICT)
- return Z_STREAM_ERROR;
-
- /* check for correct dictionary identifier */
- if (state->mode == DICT) {
- dictid = adler32(0L, Z_NULL, 0);
- dictid = adler32(dictid, dictionary, dictLength);
- if (dictid != state->check)
- return Z_DATA_ERROR;
- }
-
- /* copy dictionary to window using updatewindow(), which will amend the
- existing dictionary if appropriate */
- ret = updatewindow(strm, dictionary + dictLength, dictLength);
- if (ret) {
- state->mode = MEM;
- return Z_MEM_ERROR;
- }
- state->havedict = 1;
- Tracev((stderr, "inflate: dictionary set\n"));
- return Z_OK;
-}
-
-int ZEXPORT inflateGetHeader(strm, head)
-z_streamp strm;
-gz_headerp head;
-{
- struct inflate_state FAR *state;
-
- /* check state */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if ((state->wrap & 2) == 0) return Z_STREAM_ERROR;
-
- /* save header structure */
- state->head = head;
- head->done = 0;
- return Z_OK;
-}
-
-/*
- Search buf[0..len-1] for the pattern: 0, 0, 0xff, 0xff. Return when found
- or when out of input. When called, *have is the number of pattern bytes
- found in order so far, in 0..3. On return *have is updated to the new
- state. If on return *have equals four, then the pattern was found and the
- return value is how many bytes were read including the last byte of the
- pattern. If *have is less than four, then the pattern has not been found
- yet and the return value is len. In the latter case, syncsearch() can be
- called again with more data and the *have state. *have is initialized to
- zero for the first call.
- */
-local unsigned syncsearch(have, buf, len)
-unsigned FAR *have;
-const unsigned char FAR *buf;
-unsigned len;
-{
- unsigned got;
- unsigned next;
-
- got = *have;
- next = 0;
- while (next < len && got < 4) {
- if ((int)(buf[next]) == (got < 2 ? 0 : 0xff))
- got++;
- else if (buf[next])
- got = 0;
- else
- got = 4 - got;
- next++;
- }
- *have = got;
- return next;
-}
-
-int ZEXPORT inflateSync(strm)
-z_streamp strm;
-{
- unsigned len; /* number of bytes to look at or looked at */
- unsigned long in, out; /* temporary to save total_in and total_out */
- unsigned char buf[4]; /* to restore bit buffer to byte string */
- struct inflate_state FAR *state;
-
- /* check parameters */
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- if (strm->avail_in == 0 && state->bits < 8) return Z_BUF_ERROR;
-
- /* if first time, start search in bit buffer */
- if (state->mode != SYNC) {
- state->mode = SYNC;
- state->hold <<= state->bits & 7;
- state->bits -= state->bits & 7;
- len = 0;
- while (state->bits >= 8) {
- buf[len++] = (unsigned char)(state->hold);
- state->hold >>= 8;
- state->bits -= 8;
- }
- state->have = 0;
- syncsearch(&(state->have), buf, len);
- }
-
- /* search available input */
- len = syncsearch(&(state->have), strm->next_in, strm->avail_in);
- strm->avail_in -= len;
- strm->next_in += len;
- strm->total_in += len;
-
- /* return no joy or set up to restart inflate() on a new block */
- if (state->have != 4) return Z_DATA_ERROR;
- in = strm->total_in; out = strm->total_out;
- inflateReset(strm);
- strm->total_in = in; strm->total_out = out;
- state->mode = TYPE;
- return Z_OK;
-}
-
-/*
- Returns true if inflate is currently at the end of a block generated by
- Z_SYNC_FLUSH or Z_FULL_FLUSH. This function is used by one PPP
- implementation to provide an additional safety check. PPP uses
- Z_SYNC_FLUSH but removes the length bytes of the resulting empty stored
- block. When decompressing, PPP checks that at the end of input packet,
- inflate is waiting for these length bytes.
- */
-int ZEXPORT inflateSyncPoint(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- return state->mode == STORED && state->bits == 0;
-}
-
-int ZEXPORT inflateCopy(dest, source)
-z_streamp dest;
-z_streamp source;
-{
- struct inflate_state FAR *state;
- struct inflate_state FAR *copy;
- unsigned char FAR *window;
- unsigned wsize;
-
- /* check input */
- if (dest == Z_NULL || source == Z_NULL || source->state == Z_NULL ||
- source->zalloc == (alloc_func)0 || source->zfree == (free_func)0)
- return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)source->state;
-
- /* allocate space */
- copy = (struct inflate_state FAR *)
- ZALLOC(source, 1, sizeof(struct inflate_state));
- if (copy == Z_NULL) return Z_MEM_ERROR;
- window = Z_NULL;
- if (state->window != Z_NULL) {
- window = (unsigned char FAR *)
- ZALLOC(source, 1U << state->wbits, sizeof(unsigned char));
- if (window == Z_NULL) {
- ZFREE(source, copy);
- return Z_MEM_ERROR;
- }
- }
-
- /* copy state */
- zmemcpy((voidpf)dest, (voidpf)source, sizeof(z_stream));
- zmemcpy((voidpf)copy, (voidpf)state, sizeof(struct inflate_state));
- if (state->lencode >= state->codes &&
- state->lencode <= state->codes + ENOUGH - 1) {
- copy->lencode = copy->codes + (state->lencode - state->codes);
- copy->distcode = copy->codes + (state->distcode - state->codes);
- }
- copy->next = copy->codes + (state->next - state->codes);
- if (window != Z_NULL) {
- wsize = 1U << state->wbits;
- zmemcpy(window, state->window, wsize);
- }
- copy->window = window;
- dest->state = (struct internal_state FAR *)copy;
- return Z_OK;
-}
-
-int ZEXPORT inflateUndermine(strm, subvert)
-z_streamp strm;
-int subvert;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return Z_STREAM_ERROR;
- state = (struct inflate_state FAR *)strm->state;
- state->sane = !subvert;
-#ifdef INFLATE_ALLOW_INVALID_DISTANCE_TOOFAR_ARRR
- return Z_OK;
-#else
- state->sane = 1;
- return Z_DATA_ERROR;
-#endif
-}
-
-long ZEXPORT inflateMark(strm)
-z_streamp strm;
-{
- struct inflate_state FAR *state;
-
- if (strm == Z_NULL || strm->state == Z_NULL) return -1L << 16;
- state = (struct inflate_state FAR *)strm->state;
- return ((long)(state->back) << 16) +
- (state->mode == COPY ? state->length :
- (state->mode == MATCH ? state->was - state->length : 0));
-}
+++ /dev/null
-/* inflate.h -- internal inflate state definition
- * Copyright (C) 1995-2009 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* define NO_GZIP when compiling if you want to disable gzip header and
- trailer decoding by inflate(). NO_GZIP would be used to avoid linking in
- the crc code when it is not needed. For shared libraries, gzip decoding
- should be left enabled. */
-#ifndef NO_GZIP
-# define GUNZIP
-#endif
-
-/* Possible inflate modes between inflate() calls */
-typedef enum {
- HEAD, /* i: waiting for magic header */
- FLAGS, /* i: waiting for method and flags (gzip) */
- TIME, /* i: waiting for modification time (gzip) */
- OS, /* i: waiting for extra flags and operating system (gzip) */
- EXLEN, /* i: waiting for extra length (gzip) */
- EXTRA, /* i: waiting for extra bytes (gzip) */
- NAME, /* i: waiting for end of file name (gzip) */
- COMMENT, /* i: waiting for end of comment (gzip) */
- HCRC, /* i: waiting for header crc (gzip) */
- DICTID, /* i: waiting for dictionary check value */
- DICT, /* waiting for inflateSetDictionary() call */
- TYPE, /* i: waiting for type bits, including last-flag bit */
- TYPEDO, /* i: same, but skip check to exit inflate on new block */
- STORED, /* i: waiting for stored size (length and complement) */
- COPY_, /* i/o: same as COPY below, but only first time in */
- COPY, /* i/o: waiting for input or output to copy stored block */
- TABLE, /* i: waiting for dynamic block table lengths */
- LENLENS, /* i: waiting for code length code lengths */
- CODELENS, /* i: waiting for length/lit and distance code lengths */
- LEN_, /* i: same as LEN below, but only first time in */
- LEN, /* i: waiting for length/lit/eob code */
- LENEXT, /* i: waiting for length extra bits */
- DIST, /* i: waiting for distance code */
- DISTEXT, /* i: waiting for distance extra bits */
- MATCH, /* o: waiting for output space to copy string */
- LIT, /* o: waiting for output space to write literal */
- CHECK, /* i: waiting for 32-bit check value */
- LENGTH, /* i: waiting for 32-bit length (gzip) */
- DONE, /* finished check, done -- remain here until reset */
- BAD, /* got a data error -- remain here until reset */
- MEM, /* got an inflate() memory error -- remain here until reset */
- SYNC /* looking for synchronization bytes to restart inflate() */
-} inflate_mode;
-
-/*
- State transitions between above modes -
-
- (most modes can go to BAD or MEM on error -- not shown for clarity)
-
- Process header:
- HEAD -> (gzip) or (zlib) or (raw)
- (gzip) -> FLAGS -> TIME -> OS -> EXLEN -> EXTRA -> NAME -> COMMENT ->
- HCRC -> TYPE
- (zlib) -> DICTID or TYPE
- DICTID -> DICT -> TYPE
- (raw) -> TYPEDO
- Read deflate blocks:
- TYPE -> TYPEDO -> STORED or TABLE or LEN_ or CHECK
- STORED -> COPY_ -> COPY -> TYPE
- TABLE -> LENLENS -> CODELENS -> LEN_
- LEN_ -> LEN
- Read deflate codes in fixed or dynamic block:
- LEN -> LENEXT or LIT or TYPE
- LENEXT -> DIST -> DISTEXT -> MATCH -> LEN
- LIT -> LEN
- Process trailer:
- CHECK -> LENGTH -> DONE
- */
-
-/* state maintained between inflate() calls. Approximately 10K bytes. */
-struct inflate_state {
- inflate_mode mode; /* current inflate mode */
- int last; /* true if processing last block */
- int wrap; /* bit 0 true for zlib, bit 1 true for gzip */
- int havedict; /* true if dictionary provided */
- int flags; /* gzip header method and flags (0 if zlib) */
- unsigned dmax; /* zlib header max distance (INFLATE_STRICT) */
- unsigned long check; /* protected copy of check value */
- unsigned long total; /* protected copy of output count */
- gz_headerp head; /* where to save gzip header information */
- /* sliding window */
- unsigned wbits; /* log base 2 of requested window size */
- unsigned wsize; /* window size or zero if not using window */
- unsigned whave; /* valid bytes in the window */
- unsigned wnext; /* window write index */
- unsigned char FAR *window; /* allocated sliding window, if needed */
- /* bit accumulator */
- unsigned long hold; /* input bit accumulator */
- unsigned bits; /* number of bits in "in" */
- /* for string and stored block copying */
- unsigned length; /* literal or length of data to copy */
- unsigned offset; /* distance back to copy string from */
- /* for table and code decoding */
- unsigned extra; /* extra bits needed */
- /* fixed and dynamic code tables */
- code const FAR *lencode; /* starting table for length/literal codes */
- code const FAR *distcode; /* starting table for distance codes */
- unsigned lenbits; /* index bits for lencode */
- unsigned distbits; /* index bits for distcode */
- /* dynamic table building */
- unsigned ncode; /* number of code length code lengths */
- unsigned nlen; /* number of length code lengths */
- unsigned ndist; /* number of distance code lengths */
- unsigned have; /* number of code lengths in lens[] */
- code FAR *next; /* next available space in codes[] */
- unsigned short lens[320]; /* temporary storage for code lengths */
- unsigned short work[288]; /* work area for code table building */
- code codes[ENOUGH]; /* space for code tables */
- int sane; /* if false, allow invalid distance too far */
- int back; /* bits back of last unprocessed length/lit */
- unsigned was; /* initial length of match */
-};
+++ /dev/null
-/* inftrees.c -- generate Huffman trees for efficient decoding
- * Copyright (C) 1995-2013 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-#include "zutil.h"
-#include "inftrees.h"
-
-#define MAXBITS 15
-
-const char inflate_copyright[] =
- " inflate 1.2.8 Copyright 1995-2013 Mark Adler ";
-/*
- If you use the zlib library in a product, an acknowledgment is welcome
- in the documentation of your product. If for some reason you cannot
- include such an acknowledgment, I would appreciate that you keep this
- copyright string in the executable of your product.
- */
-
-/*
- Build a set of tables to decode the provided canonical Huffman code.
- The code lengths are lens[0..codes-1]. The result starts at *table,
- whose indices are 0..2^bits-1. work is a writable array of at least
- lens shorts, which is used as a work area. type is the type of code
- to be generated, CODES, LENS, or DISTS. On return, zero is success,
- -1 is an invalid code, and +1 means that ENOUGH isn't enough. table
- on return points to the next available entry's address. bits is the
- requested root table index bits, and on return it is the actual root
- table index bits. It will differ if the request is greater than the
- longest code or if it is less than the shortest code.
- */
-int ZLIB_INTERNAL inflate_table(type, lens, codes, table, bits, work)
-codetype type;
-unsigned short FAR *lens;
-unsigned codes;
-code FAR * FAR *table;
-unsigned FAR *bits;
-unsigned short FAR *work;
-{
- unsigned len; /* a code's length in bits */
- unsigned sym; /* index of code symbols */
- unsigned min, max; /* minimum and maximum code lengths */
- unsigned root; /* number of index bits for root table */
- unsigned curr; /* number of index bits for current table */
- unsigned drop; /* code bits to drop for sub-table */
- int left; /* number of prefix codes available */
- unsigned used; /* code entries in table used */
- unsigned huff; /* Huffman code */
- unsigned incr; /* for incrementing code, index */
- unsigned fill; /* index for replicating entries */
- unsigned low; /* low bits for current root entry */
- unsigned mask; /* mask for low root bits */
- code here; /* table entry for duplication */
- code FAR *next; /* next available space in table */
- const unsigned short FAR *base; /* base value table to use */
- const unsigned short FAR *extra; /* extra bits table to use */
- int end; /* use base and extra for symbol > end */
- unsigned short count[MAXBITS+1]; /* number of codes of each length */
- unsigned short offs[MAXBITS+1]; /* offsets in table for each length */
- static const unsigned short lbase[31] = { /* Length codes 257..285 base */
- 3, 4, 5, 6, 7, 8, 9, 10, 11, 13, 15, 17, 19, 23, 27, 31,
- 35, 43, 51, 59, 67, 83, 99, 115, 131, 163, 195, 227, 258, 0, 0};
- static const unsigned short lext[31] = { /* Length codes 257..285 extra */
- 16, 16, 16, 16, 16, 16, 16, 16, 17, 17, 17, 17, 18, 18, 18, 18,
- 19, 19, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 16, 72, 78};
- static const unsigned short dbase[32] = { /* Distance codes 0..29 base */
- 1, 2, 3, 4, 5, 7, 9, 13, 17, 25, 33, 49, 65, 97, 129, 193,
- 257, 385, 513, 769, 1025, 1537, 2049, 3073, 4097, 6145,
- 8193, 12289, 16385, 24577, 0, 0};
- static const unsigned short dext[32] = { /* Distance codes 0..29 extra */
- 16, 16, 16, 16, 17, 17, 18, 18, 19, 19, 20, 20, 21, 21, 22, 22,
- 23, 23, 24, 24, 25, 25, 26, 26, 27, 27,
- 28, 28, 29, 29, 64, 64};
-
- /*
- Process a set of code lengths to create a canonical Huffman code. The
- code lengths are lens[0..codes-1]. Each length corresponds to the
- symbols 0..codes-1. The Huffman code is generated by first sorting the
- symbols by length from short to long, and retaining the symbol order
- for codes with equal lengths. Then the code starts with all zero bits
- for the first code of the shortest length, and the codes are integer
- increments for the same length, and zeros are appended as the length
- increases. For the deflate format, these bits are stored backwards
- from their more natural integer increment ordering, and so when the
- decoding tables are built in the large loop below, the integer codes
- are incremented backwards.
-
- This routine assumes, but does not check, that all of the entries in
- lens[] are in the range 0..MAXBITS. The caller must assure this.
- 1..MAXBITS is interpreted as that code length. zero means that that
- symbol does not occur in this code.
-
- The codes are sorted by computing a count of codes for each length,
- creating from that a table of starting indices for each length in the
- sorted table, and then entering the symbols in order in the sorted
- table. The sorted table is work[], with that space being provided by
- the caller.
-
- The length counts are used for other purposes as well, i.e. finding
- the minimum and maximum length codes, determining if there are any
- codes at all, checking for a valid set of lengths, and looking ahead
- at length counts to determine sub-table sizes when building the
- decoding tables.
- */
-
- /* accumulate lengths for codes (assumes lens[] all in 0..MAXBITS) */
- for (len = 0; len <= MAXBITS; len++)
- count[len] = 0;
- for (sym = 0; sym < codes; sym++)
- count[lens[sym]]++;
-
- /* bound code lengths, force root to be within code lengths */
- root = *bits;
- for (max = MAXBITS; max >= 1; max--)
- if (count[max] != 0) break;
- if (root > max) root = max;
- if (max == 0) { /* no symbols to code at all */
- here.op = (unsigned char)64; /* invalid code marker */
- here.bits = (unsigned char)1;
- here.val = (unsigned short)0;
- *(*table)++ = here; /* make a table to force an error */
- *(*table)++ = here;
- *bits = 1;
- return 0; /* no symbols, but wait for decoding to report error */
- }
- for (min = 1; min < max; min++)
- if (count[min] != 0) break;
- if (root < min) root = min;
-
- /* check for an over-subscribed or incomplete set of lengths */
- left = 1;
- for (len = 1; len <= MAXBITS; len++) {
- left <<= 1;
- left -= count[len];
- if (left < 0) return -1; /* over-subscribed */
- }
- if (left > 0 && (type == CODES || max != 1))
- return -1; /* incomplete set */
-
- /* generate offsets into symbol table for each length for sorting */
- offs[1] = 0;
- for (len = 1; len < MAXBITS; len++)
- offs[len + 1] = offs[len] + count[len];
-
- /* sort symbols by length, by symbol order within each length */
- for (sym = 0; sym < codes; sym++)
- if (lens[sym] != 0) work[offs[lens[sym]]++] = (unsigned short)sym;
-
- /*
- Create and fill in decoding tables. In this loop, the table being
- filled is at next and has curr index bits. The code being used is huff
- with length len. That code is converted to an index by dropping drop
- bits off of the bottom. For codes where len is less than drop + curr,
- those top drop + curr - len bits are incremented through all values to
- fill the table with replicated entries.
-
- root is the number of index bits for the root table. When len exceeds
- root, sub-tables are created pointed to by the root entry with an index
- of the low root bits of huff. This is saved in low to check for when a
- new sub-table should be started. drop is zero when the root table is
- being filled, and drop is root when sub-tables are being filled.
-
- When a new sub-table is needed, it is necessary to look ahead in the
- code lengths to determine what size sub-table is needed. The length
- counts are used for this, and so count[] is decremented as codes are
- entered in the tables.
-
- used keeps track of how many table entries have been allocated from the
- provided *table space. It is checked for LENS and DIST tables against
- the constants ENOUGH_LENS and ENOUGH_DISTS to guard against changes in
- the initial root table size constants. See the comments in inftrees.h
- for more information.
-
- sym increments through all symbols, and the loop terminates when
- all codes of length max, i.e. all codes, have been processed. This
- routine permits incomplete codes, so another loop after this one fills
- in the rest of the decoding tables with invalid code markers.
- */
-
- /* set up for code type */
- switch (type) {
- case CODES:
- base = extra = work; /* dummy value--not used */
- end = 19;
- break;
- case LENS:
- base = lbase;
- base -= 257;
- extra = lext;
- extra -= 257;
- end = 256;
- break;
- default: /* DISTS */
- base = dbase;
- extra = dext;
- end = -1;
- }
-
- /* initialize state for loop */
- huff = 0; /* starting code */
- sym = 0; /* starting code symbol */
- len = min; /* starting code length */
- next = *table; /* current table to fill in */
- curr = root; /* current table index bits */
- drop = 0; /* current bits to drop from code for index */
- low = (unsigned)(-1); /* trigger new sub-table when len > root */
- used = 1U << root; /* use root table entries */
- mask = used - 1; /* mask for comparing low */
-
- /* check available table space */
- if ((type == LENS && used > ENOUGH_LENS) ||
- (type == DISTS && used > ENOUGH_DISTS))
- return 1;
-
- /* process all codes and make table entries */
- for (;;) {
- /* create table entry */
- here.bits = (unsigned char)(len - drop);
- if ((int)(work[sym]) < end) {
- here.op = (unsigned char)0;
- here.val = work[sym];
- }
- else if ((int)(work[sym]) > end) {
- here.op = (unsigned char)(extra[work[sym]]);
- here.val = base[work[sym]];
- }
- else {
- here.op = (unsigned char)(32 + 64); /* end of block */
- here.val = 0;
- }
-
- /* replicate for those indices with low len bits equal to huff */
- incr = 1U << (len - drop);
- fill = 1U << curr;
- min = fill; /* save offset to next table */
- do {
- fill -= incr;
- next[(huff >> drop) + fill] = here;
- } while (fill != 0);
-
- /* backwards increment the len-bit code huff */
- incr = 1U << (len - 1);
- while (huff & incr)
- incr >>= 1;
- if (incr != 0) {
- huff &= incr - 1;
- huff += incr;
- }
- else
- huff = 0;
-
- /* go to next symbol, update count, len */
- sym++;
- if (--(count[len]) == 0) {
- if (len == max) break;
- len = lens[work[sym]];
- }
-
- /* create new sub-table if needed */
- if (len > root && (huff & mask) != low) {
- /* if first time, transition to sub-tables */
- if (drop == 0)
- drop = root;
-
- /* increment past last table */
- next += min; /* here min is 1 << curr */
-
- /* determine length of next table */
- curr = len - drop;
- left = (int)(1 << curr);
- while (curr + drop < max) {
- left -= count[curr + drop];
- if (left <= 0) break;
- curr++;
- left <<= 1;
- }
-
- /* check for enough space */
- used += 1U << curr;
- if ((type == LENS && used > ENOUGH_LENS) ||
- (type == DISTS && used > ENOUGH_DISTS))
- return 1;
-
- /* point entry in root table to sub-table */
- low = huff & mask;
- (*table)[low].op = (unsigned char)curr;
- (*table)[low].bits = (unsigned char)root;
- (*table)[low].val = (unsigned short)(next - *table);
- }
- }
-
- /* fill in remaining table entry if code is incomplete (guaranteed to have
- at most one remaining entry, since if the code is incomplete, the
- maximum code length that was allowed to get this far is one bit) */
- if (huff != 0) {
- here.op = (unsigned char)64; /* invalid code marker */
- here.bits = (unsigned char)(len - drop);
- here.val = (unsigned short)0;
- next[huff] = here;
- }
-
- /* set return parameters */
- *table += used;
- *bits = root;
- return 0;
-}
+++ /dev/null
-/* inftrees.h -- header to use inftrees.c
- * Copyright (C) 1995-2005, 2010 Mark Adler
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* Structure for decoding tables. Each entry provides either the
- information needed to do the operation requested by the code that
- indexed that table entry, or it provides a pointer to another
- table that indexes more bits of the code. op indicates whether
- the entry is a pointer to another table, a literal, a length or
- distance, an end-of-block, or an invalid code. For a table
- pointer, the low four bits of op is the number of index bits of
- that table. For a length or distance, the low four bits of op
- is the number of extra bits to get after the code. bits is
- the number of bits in this code or part of the code to drop off
- of the bit buffer. val is the actual byte to output in the case
- of a literal, the base length or distance, or the offset from
- the current table to the next table. Each entry is four bytes. */
-typedef struct {
- unsigned char op; /* operation, extra bits, table bits */
- unsigned char bits; /* bits in this part of the code */
- unsigned short val; /* offset in table or code value */
-} code;
-
-/* op values as set by inflate_table():
- 00000000 - literal
- 0000tttt - table link, tttt != 0 is the number of table index bits
- 0001eeee - length or distance, eeee is the number of extra bits
- 01100000 - end of block
- 01000000 - invalid code
- */
-
-/* Maximum size of the dynamic table. The maximum number of code structures is
- 1444, which is the sum of 852 for literal/length codes and 592 for distance
- codes. These values were found by exhaustive searches using the program
- examples/enough.c found in the zlib distribtution. The arguments to that
- program are the number of symbols, the initial root table size, and the
- maximum bit length of a code. "enough 286 9 15" for literal/length codes
- returns returns 852, and "enough 30 6 15" for distance codes returns 592.
- The initial root table size (9 or 6) is found in the fifth argument of the
- inflate_table() calls in inflate.c and infback.c. If the root table size is
- changed, then these maximum sizes would be need to be recalculated and
- updated. */
-#define ENOUGH_LENS 852
-#define ENOUGH_DISTS 592
-#define ENOUGH (ENOUGH_LENS+ENOUGH_DISTS)
-
-/* Type of code to build for inflate_table() */
-typedef enum {
- CODES,
- LENS,
- DISTS
-} codetype;
-
-int ZLIB_INTERNAL inflate_table OF((codetype type, unsigned short FAR *lens,
- unsigned codes, code FAR * FAR *table,
- unsigned FAR *bits, unsigned short FAR *work));
+++ /dev/null
-$! make libz under VMS written by
-$! Martin P.J. Zinser
-$!
-$! In case of problems with the install you might contact me at
-$! zinser@zinser.no-ip.info(preferred) or
-$! martin.zinser@eurexchange.com (work)
-$!
-$! Make procedure history for Zlib
-$!
-$!------------------------------------------------------------------------------
-$! Version history
-$! 0.01 20060120 First version to receive a number
-$! 0.02 20061008 Adapt to new Makefile.in
-$! 0.03 20091224 Add support for large file check
-$! 0.04 20100110 Add new gzclose, gzlib, gzread, gzwrite
-$! 0.05 20100221 Exchange zlibdefs.h by zconf.h.in
-$! 0.06 20120111 Fix missing amiss_err, update zconf_h.in, fix new exmples
-$! subdir path, update module search in makefile.in
-$! 0.07 20120115 Triggered by work done by Alexey Chupahin completly redesigned
-$! shared image creation
-$! 0.08 20120219 Make it work on VAX again, pre-load missing symbols to shared
-$! image
-$! 0.09 20120305 SMS. P1 sets builder ("MMK", "MMS", " " (built-in)).
-$! "" -> automatic, preference: MMK, MMS, built-in.
-$!
-$ on error then goto err_exit
-$!
-$ true = 1
-$ false = 0
-$ tmpnam = "temp_" + f$getjpi("","pid")
-$ tt = tmpnam + ".txt"
-$ tc = tmpnam + ".c"
-$ th = tmpnam + ".h"
-$ define/nolog tconfig 'th'
-$ its_decc = false
-$ its_vaxc = false
-$ its_gnuc = false
-$ s_case = False
-$!
-$! Setup variables holding "config" information
-$!
-$ Make = "''p1'"
-$ name = "Zlib"
-$ version = "?.?.?"
-$ v_string = "ZLIB_VERSION"
-$ v_file = "zlib.h"
-$ ccopt = "/include = []"
-$ lopts = ""
-$ dnsrl = ""
-$ aconf_in_file = "zconf.h.in#zconf.h_in#zconf_h.in"
-$ conf_check_string = ""
-$ linkonly = false
-$ optfile = name + ".opt"
-$ mapfile = name + ".map"
-$ libdefs = ""
-$ vax = f$getsyi("HW_MODEL").lt.1024
-$ axp = f$getsyi("HW_MODEL").ge.1024 .and. f$getsyi("HW_MODEL").lt.4096
-$ ia64 = f$getsyi("HW_MODEL").ge.4096
-$!
-$! 2012-03-05 SMS.
-$! Why is this needed? And if it is needed, why not simply ".not. vax"?
-$!
-$!!! if axp .or. ia64 then set proc/parse=extended
-$!
-$ whoami = f$parse(f$environment("Procedure"),,,,"NO_CONCEAL")
-$ mydef = F$parse(whoami,,,"DEVICE")
-$ mydir = f$parse(whoami,,,"DIRECTORY") - "]["
-$ myproc = f$parse(whoami,,,"Name") + f$parse(whoami,,,"type")
-$!
-$! Check for MMK/MMS
-$!
-$ if (Make .eqs. "")
-$ then
-$ If F$Search ("Sys$System:MMS.EXE") .nes. "" Then Make = "MMS"
-$ If F$Type (MMK) .eqs. "STRING" Then Make = "MMK"
-$ else
-$ Make = f$edit( Make, "trim")
-$ endif
-$!
-$ gosub find_version
-$!
-$ open/write topt tmp.opt
-$ open/write optf 'optfile'
-$!
-$ gosub check_opts
-$!
-$! Look for the compiler used
-$!
-$ gosub check_compiler
-$ close topt
-$ close optf
-$!
-$ if its_decc
-$ then
-$ ccopt = "/prefix=all" + ccopt
-$ if f$trnlnm("SYS") .eqs. ""
-$ then
-$ if axp
-$ then
-$ define sys sys$library:
-$ else
-$ ccopt = "/decc" + ccopt
-$ define sys decc$library_include:
-$ endif
-$ endif
-$!
-$! 2012-03-05 SMS.
-$! Why /NAMES = AS_IS? Why not simply ".not. vax"? And why not on VAX?
-$!
-$ if axp .or. ia64
-$ then
-$ ccopt = ccopt + "/name=as_is/opt=(inline=speed)"
-$ s_case = true
-$ endif
-$ endif
-$ if its_vaxc .or. its_gnuc
-$ then
-$ if f$trnlnm("SYS").eqs."" then define sys sys$library:
-$ endif
-$!
-$! Build a fake configure input header
-$!
-$ open/write conf_hin config.hin
-$ write conf_hin "#undef _LARGEFILE64_SOURCE"
-$ close conf_hin
-$!
-$!
-$ i = 0
-$FIND_ACONF:
-$ fname = f$element(i,"#",aconf_in_file)
-$ if fname .eqs. "#" then goto AMISS_ERR
-$ if f$search(fname) .eqs. ""
-$ then
-$ i = i + 1
-$ goto find_aconf
-$ endif
-$ open/read/err=aconf_err aconf_in 'fname'
-$ open/write aconf zconf.h
-$ACONF_LOOP:
-$ read/end_of_file=aconf_exit aconf_in line
-$ work = f$edit(line, "compress,trim")
-$ if f$extract(0,6,work) .nes. "#undef"
-$ then
-$ if f$extract(0,12,work) .nes. "#cmakedefine"
-$ then
-$ write aconf line
-$ endif
-$ else
-$ cdef = f$element(1," ",work)
-$ gosub check_config
-$ endif
-$ goto aconf_loop
-$ACONF_EXIT:
-$ write aconf ""
-$ write aconf "/* VMS specifics added by make_vms.com: */"
-$ write aconf "#define VMS 1"
-$ write aconf "#include <unistd.h>"
-$ write aconf "#include <unixio.h>"
-$ write aconf "#ifdef _LARGEFILE"
-$ write aconf "# define off64_t __off64_t"
-$ write aconf "# define fopen64 fopen"
-$ write aconf "# define fseeko64 fseeko"
-$ write aconf "# define lseek64 lseek"
-$ write aconf "# define ftello64 ftell"
-$ write aconf "#endif"
-$ write aconf "#if !defined( __VAX) && (__CRTL_VER >= 70312000)"
-$ write aconf "# define HAVE_VSNPRINTF"
-$ write aconf "#endif"
-$ close aconf_in
-$ close aconf
-$ if f$search("''th'") .nes. "" then delete 'th';*
-$! Build the thing plain or with mms
-$!
-$ write sys$output "Compiling Zlib sources ..."
-$ if make.eqs.""
-$ then
-$ if (f$search( "example.obj;*") .nes. "") then delete example.obj;*
-$ if (f$search( "minigzip.obj;*") .nes. "") then delete minigzip.obj;*
-$ CALL MAKE adler32.OBJ "CC ''CCOPT' adler32" -
- adler32.c zlib.h zconf.h
-$ CALL MAKE compress.OBJ "CC ''CCOPT' compress" -
- compress.c zlib.h zconf.h
-$ CALL MAKE crc32.OBJ "CC ''CCOPT' crc32" -
- crc32.c zlib.h zconf.h
-$ CALL MAKE deflate.OBJ "CC ''CCOPT' deflate" -
- deflate.c deflate.h zutil.h zlib.h zconf.h
-$ CALL MAKE gzclose.OBJ "CC ''CCOPT' gzclose" -
- gzclose.c zutil.h zlib.h zconf.h
-$ CALL MAKE gzlib.OBJ "CC ''CCOPT' gzlib" -
- gzlib.c zutil.h zlib.h zconf.h
-$ CALL MAKE gzread.OBJ "CC ''CCOPT' gzread" -
- gzread.c zutil.h zlib.h zconf.h
-$ CALL MAKE gzwrite.OBJ "CC ''CCOPT' gzwrite" -
- gzwrite.c zutil.h zlib.h zconf.h
-$ CALL MAKE infback.OBJ "CC ''CCOPT' infback" -
- infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h
-$ CALL MAKE inffast.OBJ "CC ''CCOPT' inffast" -
- inffast.c zutil.h zlib.h zconf.h inffast.h
-$ CALL MAKE inflate.OBJ "CC ''CCOPT' inflate" -
- inflate.c zutil.h zlib.h zconf.h infblock.h
-$ CALL MAKE inftrees.OBJ "CC ''CCOPT' inftrees" -
- inftrees.c zutil.h zlib.h zconf.h inftrees.h
-$ CALL MAKE trees.OBJ "CC ''CCOPT' trees" -
- trees.c deflate.h zutil.h zlib.h zconf.h
-$ CALL MAKE uncompr.OBJ "CC ''CCOPT' uncompr" -
- uncompr.c zlib.h zconf.h
-$ CALL MAKE zutil.OBJ "CC ''CCOPT' zutil" -
- zutil.c zutil.h zlib.h zconf.h
-$ write sys$output "Building Zlib ..."
-$ CALL MAKE libz.OLB "lib/crea libz.olb *.obj" *.OBJ
-$ write sys$output "Building example..."
-$ CALL MAKE example.OBJ "CC ''CCOPT' [.test]example" -
- [.test]example.c zlib.h zconf.h
-$ call make example.exe "LINK example,libz.olb/lib" example.obj libz.olb
-$ write sys$output "Building minigzip..."
-$ CALL MAKE minigzip.OBJ "CC ''CCOPT' [.test]minigzip" -
- [.test]minigzip.c zlib.h zconf.h
-$ call make minigzip.exe -
- "LINK minigzip,libz.olb/lib" -
- minigzip.obj libz.olb
-$ else
-$ gosub crea_mms
-$ write sys$output "Make ''name' ''version' with ''Make' "
-$ 'make'
-$ endif
-$!
-$! Create shareable image
-$!
-$ gosub crea_olist
-$ write sys$output "Creating libzshr.exe"
-$ call map_2_shopt 'mapfile' 'optfile'
-$ LINK_'lopts'/SHARE=libzshr.exe modules.opt/opt,'optfile'/opt
-$ write sys$output "Zlib build completed"
-$ delete/nolog tmp.opt;*
-$ exit
-$AMISS_ERR:
-$ write sys$output "No source for config.hin found."
-$ write sys$output "Tried any of ''aconf_in_file'"
-$ goto err_exit
-$CC_ERR:
-$ write sys$output "C compiler required to build ''name'"
-$ goto err_exit
-$ERR_EXIT:
-$ set message/facil/ident/sever/text
-$ close/nolog optf
-$ close/nolog topt
-$ close/nolog aconf_in
-$ close/nolog aconf
-$ close/nolog out
-$ close/nolog min
-$ close/nolog mod
-$ close/nolog h_in
-$ write sys$output "Exiting..."
-$ exit 2
-$!
-$!
-$MAKE: SUBROUTINE !SUBROUTINE TO CHECK DEPENDENCIES
-$ V = 'F$Verify(0)
-$! P1 = What we are trying to make
-$! P2 = Command to make it
-$! P3 - P8 What it depends on
-$
-$ If F$Search(P1) .Eqs. "" Then Goto Makeit
-$ Time = F$CvTime(F$File(P1,"RDT"))
-$arg=3
-$Loop:
-$ Argument = P'arg
-$ If Argument .Eqs. "" Then Goto Exit
-$ El=0
-$Loop2:
-$ File = F$Element(El," ",Argument)
-$ If File .Eqs. " " Then Goto Endl
-$ AFile = ""
-$Loop3:
-$ OFile = AFile
-$ AFile = F$Search(File)
-$ If AFile .Eqs. "" .Or. AFile .Eqs. OFile Then Goto NextEl
-$ If F$CvTime(F$File(AFile,"RDT")) .Ges. Time Then Goto Makeit
-$ Goto Loop3
-$NextEL:
-$ El = El + 1
-$ Goto Loop2
-$EndL:
-$ arg=arg+1
-$ If arg .Le. 8 Then Goto Loop
-$ Goto Exit
-$
-$Makeit:
-$ VV=F$VERIFY(0)
-$ write sys$output P2
-$ 'P2
-$ VV='F$Verify(VV)
-$Exit:
-$ If V Then Set Verify
-$ENDSUBROUTINE
-$!------------------------------------------------------------------------------
-$!
-$! Check command line options and set symbols accordingly
-$!
-$!------------------------------------------------------------------------------
-$! Version history
-$! 0.01 20041206 First version to receive a number
-$! 0.02 20060126 Add new "HELP" target
-$ CHECK_OPTS:
-$ i = 1
-$ OPT_LOOP:
-$ if i .lt. 9
-$ then
-$ cparm = f$edit(p'i',"upcase")
-$!
-$! Check if parameter actually contains something
-$!
-$ if f$edit(cparm,"trim") .nes. ""
-$ then
-$ if cparm .eqs. "DEBUG"
-$ then
-$ ccopt = ccopt + "/noopt/deb"
-$ lopts = lopts + "/deb"
-$ endif
-$ if f$locate("CCOPT=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ ccopt = ccopt + f$extract(start,len,cparm)
-$ if f$locate("AS_IS",f$edit(ccopt,"UPCASE")) .lt. f$length(ccopt) -
- then s_case = true
-$ endif
-$ if cparm .eqs. "LINK" then linkonly = true
-$ if f$locate("LOPTS=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ lopts = lopts + f$extract(start,len,cparm)
-$ endif
-$ if f$locate("CC=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ cc_com = f$extract(start,len,cparm)
- if (cc_com .nes. "DECC") .and. -
- (cc_com .nes. "VAXC") .and. -
- (cc_com .nes. "GNUC")
-$ then
-$ write sys$output "Unsupported compiler choice ''cc_com' ignored"
-$ write sys$output "Use DECC, VAXC, or GNUC instead"
-$ else
-$ if cc_com .eqs. "DECC" then its_decc = true
-$ if cc_com .eqs. "VAXC" then its_vaxc = true
-$ if cc_com .eqs. "GNUC" then its_gnuc = true
-$ endif
-$ endif
-$ if f$locate("MAKE=",cparm) .lt. f$length(cparm)
-$ then
-$ start = f$locate("=",cparm) + 1
-$ len = f$length(cparm) - start
-$ mmks = f$extract(start,len,cparm)
-$ if (mmks .eqs. "MMK") .or. (mmks .eqs. "MMS")
-$ then
-$ make = mmks
-$ else
-$ write sys$output "Unsupported make choice ''mmks' ignored"
-$ write sys$output "Use MMK or MMS instead"
-$ endif
-$ endif
-$ if cparm .eqs. "HELP" then gosub bhelp
-$ endif
-$ i = i + 1
-$ goto opt_loop
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Look for the compiler used
-$!
-$! Version history
-$! 0.01 20040223 First version to receive a number
-$! 0.02 20040229 Save/set value of decc$no_rooted_search_lists
-$! 0.03 20060202 Extend handling of GNU C
-$! 0.04 20090402 Compaq -> hp
-$CHECK_COMPILER:
-$ if (.not. (its_decc .or. its_vaxc .or. its_gnuc))
-$ then
-$ its_decc = (f$search("SYS$SYSTEM:DECC$COMPILER.EXE") .nes. "")
-$ its_vaxc = .not. its_decc .and. (F$Search("SYS$System:VAXC.Exe") .nes. "")
-$ its_gnuc = .not. (its_decc .or. its_vaxc) .and. (f$trnlnm("gnu_cc") .nes. "")
-$ endif
-$!
-$! Exit if no compiler available
-$!
-$ if (.not. (its_decc .or. its_vaxc .or. its_gnuc))
-$ then goto CC_ERR
-$ else
-$ if its_decc
-$ then
-$ write sys$output "CC compiler check ... hp C"
-$ if f$trnlnm("decc$no_rooted_search_lists") .nes. ""
-$ then
-$ dnrsl = f$trnlnm("decc$no_rooted_search_lists")
-$ endif
-$ define/nolog decc$no_rooted_search_lists 1
-$ else
-$ if its_vaxc then write sys$output "CC compiler check ... VAX C"
-$ if its_gnuc
-$ then
-$ write sys$output "CC compiler check ... GNU C"
-$ if f$trnlnm(topt) then write topt "gnu_cc:[000000]gcclib.olb/lib"
-$ if f$trnlnm(optf) then write optf "gnu_cc:[000000]gcclib.olb/lib"
-$ cc = "gcc"
-$ endif
-$ if f$trnlnm(topt) then write topt "sys$share:vaxcrtl.exe/share"
-$ if f$trnlnm(optf) then write optf "sys$share:vaxcrtl.exe/share"
-$ endif
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! If MMS/MMK are available dump out the descrip.mms if required
-$!
-$CREA_MMS:
-$ write sys$output "Creating descrip.mms..."
-$ create descrip.mms
-$ open/append out descrip.mms
-$ copy sys$input: out
-$ deck
-# descrip.mms: MMS description file for building zlib on VMS
-# written by Martin P.J. Zinser
-# <zinser@zinser.no-ip.info or martin.zinser@eurexchange.com>
-
-OBJS = adler32.obj, compress.obj, crc32.obj, gzclose.obj, gzlib.obj\
- gzread.obj, gzwrite.obj, uncompr.obj, infback.obj\
- deflate.obj, trees.obj, zutil.obj, inflate.obj, \
- inftrees.obj, inffast.obj
-
-$ eod
-$ write out "CFLAGS=", ccopt
-$ write out "LOPTS=", lopts
-$ write out "all : example.exe minigzip.exe libz.olb"
-$ copy sys$input: out
-$ deck
- @ write sys$output " Example applications available"
-
-libz.olb : libz.olb($(OBJS))
- @ write sys$output " libz available"
-
-example.exe : example.obj libz.olb
- link $(LOPTS) example,libz.olb/lib
-
-minigzip.exe : minigzip.obj libz.olb
- link $(LOPTS) minigzip,libz.olb/lib
-
-clean :
- delete *.obj;*,libz.olb;*,*.opt;*,*.exe;*
-
-
-# Other dependencies.
-adler32.obj : adler32.c zutil.h zlib.h zconf.h
-compress.obj : compress.c zlib.h zconf.h
-crc32.obj : crc32.c zutil.h zlib.h zconf.h
-deflate.obj : deflate.c deflate.h zutil.h zlib.h zconf.h
-example.obj : [.test]example.c zlib.h zconf.h
-gzclose.obj : gzclose.c zutil.h zlib.h zconf.h
-gzlib.obj : gzlib.c zutil.h zlib.h zconf.h
-gzread.obj : gzread.c zutil.h zlib.h zconf.h
-gzwrite.obj : gzwrite.c zutil.h zlib.h zconf.h
-inffast.obj : inffast.c zutil.h zlib.h zconf.h inftrees.h inffast.h
-inflate.obj : inflate.c zutil.h zlib.h zconf.h
-inftrees.obj : inftrees.c zutil.h zlib.h zconf.h inftrees.h
-minigzip.obj : [.test]minigzip.c zlib.h zconf.h
-trees.obj : trees.c deflate.h zutil.h zlib.h zconf.h
-uncompr.obj : uncompr.c zlib.h zconf.h
-zutil.obj : zutil.c zutil.h zlib.h zconf.h
-infback.obj : infback.c zutil.h inftrees.h inflate.h inffast.h inffixed.h
-$ eod
-$ close out
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Read list of core library sources from makefile.in and create options
-$! needed to build shareable image
-$!
-$CREA_OLIST:
-$ open/read min makefile.in
-$ open/write mod modules.opt
-$ src_check_list = "OBJZ =#OBJG ="
-$MRLOOP:
-$ read/end=mrdone min rec
-$ i = 0
-$SRC_CHECK_LOOP:
-$ src_check = f$element(i, "#", src_check_list)
-$ i = i+1
-$ if src_check .eqs. "#" then goto mrloop
-$ if (f$extract(0,6,rec) .nes. src_check) then goto src_check_loop
-$ rec = rec - src_check
-$ gosub extra_filnam
-$ if (f$element(1,"\",rec) .eqs. "\") then goto mrloop
-$MRSLOOP:
-$ read/end=mrdone min rec
-$ gosub extra_filnam
-$ if (f$element(1,"\",rec) .nes. "\") then goto mrsloop
-$MRDONE:
-$ close min
-$ close mod
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Take record extracted in crea_olist and split it into single filenames
-$!
-$EXTRA_FILNAM:
-$ myrec = f$edit(rec - "\", "trim,compress")
-$ i = 0
-$FELOOP:
-$ srcfil = f$element(i," ", myrec)
-$ if (srcfil .nes. " ")
-$ then
-$ write mod f$parse(srcfil,,,"NAME"), ".obj"
-$ i = i + 1
-$ goto feloop
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Find current Zlib version number
-$!
-$FIND_VERSION:
-$ open/read h_in 'v_file'
-$hloop:
-$ read/end=hdone h_in rec
-$ rec = f$edit(rec,"TRIM")
-$ if (f$extract(0,1,rec) .nes. "#") then goto hloop
-$ rec = f$edit(rec - "#", "TRIM")
-$ if f$element(0," ",rec) .nes. "define" then goto hloop
-$ if f$element(1," ",rec) .eqs. v_string
-$ then
-$ version = 'f$element(2," ",rec)'
-$ goto hdone
-$ endif
-$ goto hloop
-$hdone:
-$ close h_in
-$ return
-$!------------------------------------------------------------------------------
-$!
-$CHECK_CONFIG:
-$!
-$ in_ldef = f$locate(cdef,libdefs)
-$ if (in_ldef .lt. f$length(libdefs))
-$ then
-$ write aconf "#define ''cdef' 1"
-$ libdefs = f$extract(0,in_ldef,libdefs) + -
- f$extract(in_ldef + f$length(cdef) + 1, -
- f$length(libdefs) - in_ldef - f$length(cdef) - 1, -
- libdefs)
-$ else
-$ if (f$type('cdef') .eqs. "INTEGER")
-$ then
-$ write aconf "#define ''cdef' ", 'cdef'
-$ else
-$ if (f$type('cdef') .eqs. "STRING")
-$ then
-$ write aconf "#define ''cdef' ", """", '''cdef'', """"
-$ else
-$ gosub check_cc_def
-$ endif
-$ endif
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Check if this is a define relating to the properties of the C/C++
-$! compiler
-$!
-$ CHECK_CC_DEF:
-$ if (cdef .eqs. "_LARGEFILE64_SOURCE")
-$ then
-$ copy sys$input: 'tc'
-$ deck
-#include "tconfig"
-#define _LARGEFILE
-#include <stdio.h>
-
-int main(){
-FILE *fp;
- fp = fopen("temp.txt","r");
- fseeko(fp,1,SEEK_SET);
- fclose(fp);
-}
-
-$ eod
-$ test_inv = false
-$ comm_h = false
-$ gosub cc_prop_check
-$ return
-$ endif
-$ write aconf "/* ", line, " */"
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Check for properties of C/C++ compiler
-$!
-$! Version history
-$! 0.01 20031020 First version to receive a number
-$! 0.02 20031022 Added logic for defines with value
-$! 0.03 20040309 Make sure local config file gets not deleted
-$! 0.04 20041230 Also write include for configure run
-$! 0.05 20050103 Add processing of "comment defines"
-$CC_PROP_CHECK:
-$ cc_prop = true
-$ is_need = false
-$ is_need = (f$extract(0,4,cdef) .eqs. "NEED") .or. (test_inv .eq. true)
-$ if f$search(th) .eqs. "" then create 'th'
-$ set message/nofac/noident/nosever/notext
-$ on error then continue
-$ cc 'tmpnam'
-$ if .not. ($status) then cc_prop = false
-$ on error then continue
-$! The headers might lie about the capabilities of the RTL
-$ link 'tmpnam',tmp.opt/opt
-$ if .not. ($status) then cc_prop = false
-$ set message/fac/ident/sever/text
-$ on error then goto err_exit
-$ delete/nolog 'tmpnam'.*;*/exclude='th'
-$ if (cc_prop .and. .not. is_need) .or. -
- (.not. cc_prop .and. is_need)
-$ then
-$ write sys$output "Checking for ''cdef'... yes"
-$ if f$type('cdef_val'_yes) .nes. ""
-$ then
-$ if f$type('cdef_val'_yes) .eqs. "INTEGER" -
- then call write_config f$fao("#define !AS !UL",cdef,'cdef_val'_yes)
-$ if f$type('cdef_val'_yes) .eqs. "STRING" -
- then call write_config f$fao("#define !AS !AS",cdef,'cdef_val'_yes)
-$ else
-$ call write_config f$fao("#define !AS 1",cdef)
-$ endif
-$ if (cdef .eqs. "HAVE_FSEEKO") .or. (cdef .eqs. "_LARGE_FILES") .or. -
- (cdef .eqs. "_LARGEFILE64_SOURCE") then -
- call write_config f$string("#define _LARGEFILE 1")
-$ else
-$ write sys$output "Checking for ''cdef'... no"
-$ if (comm_h)
-$ then
- call write_config f$fao("/* !AS */",line)
-$ else
-$ if f$type('cdef_val'_no) .nes. ""
-$ then
-$ if f$type('cdef_val'_no) .eqs. "INTEGER" -
- then call write_config f$fao("#define !AS !UL",cdef,'cdef_val'_no)
-$ if f$type('cdef_val'_no) .eqs. "STRING" -
- then call write_config f$fao("#define !AS !AS",cdef,'cdef_val'_no)
-$ else
-$ call write_config f$fao("#undef !AS",cdef)
-$ endif
-$ endif
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Check for properties of C/C++ compiler with multiple result values
-$!
-$! Version history
-$! 0.01 20040127 First version
-$! 0.02 20050103 Reconcile changes from cc_prop up to version 0.05
-$CC_MPROP_CHECK:
-$ cc_prop = true
-$ i = 1
-$ idel = 1
-$ MT_LOOP:
-$ if f$type(result_'i') .eqs. "STRING"
-$ then
-$ set message/nofac/noident/nosever/notext
-$ on error then continue
-$ cc 'tmpnam'_'i'
-$ if .not. ($status) then cc_prop = false
-$ on error then continue
-$! The headers might lie about the capabilities of the RTL
-$ link 'tmpnam'_'i',tmp.opt/opt
-$ if .not. ($status) then cc_prop = false
-$ set message/fac/ident/sever/text
-$ on error then goto err_exit
-$ delete/nolog 'tmpnam'_'i'.*;*
-$ if (cc_prop)
-$ then
-$ write sys$output "Checking for ''cdef'... ", mdef_'i'
-$ if f$type(mdef_'i') .eqs. "INTEGER" -
- then call write_config f$fao("#define !AS !UL",cdef,mdef_'i')
-$ if f$type('cdef_val'_yes) .eqs. "STRING" -
- then call write_config f$fao("#define !AS !AS",cdef,mdef_'i')
-$ goto msym_clean
-$ else
-$ i = i + 1
-$ goto mt_loop
-$ endif
-$ endif
-$ write sys$output "Checking for ''cdef'... no"
-$ call write_config f$fao("#undef !AS",cdef)
-$ MSYM_CLEAN:
-$ if (idel .le. msym_max)
-$ then
-$ delete/sym mdef_'idel'
-$ idel = idel + 1
-$ goto msym_clean
-$ endif
-$ return
-$!------------------------------------------------------------------------------
-$!
-$! Write configuration to both permanent and temporary config file
-$!
-$! Version history
-$! 0.01 20031029 First version to receive a number
-$!
-$WRITE_CONFIG: SUBROUTINE
-$ write aconf 'p1'
-$ open/append confh 'th'
-$ write confh 'p1'
-$ close confh
-$ENDSUBROUTINE
-$!------------------------------------------------------------------------------
-$!
-$! Analyze the project map file and create the symbol vector for a shareable
-$! image from it
-$!
-$! Version history
-$! 0.01 20120128 First version
-$! 0.02 20120226 Add pre-load logic
-$!
-$ MAP_2_SHOPT: Subroutine
-$!
-$ SAY := "WRITE_ SYS$OUTPUT"
-$!
-$ IF F$SEARCH("''P1'") .EQS. ""
-$ THEN
-$ SAY "MAP_2_SHOPT-E-NOSUCHFILE: Error, inputfile ''p1' not available"
-$ goto exit_m2s
-$ ENDIF
-$ IF "''P2'" .EQS. ""
-$ THEN
-$ SAY "MAP_2_SHOPT: Error, no output file provided"
-$ goto exit_m2s
-$ ENDIF
-$!
-$ module1 = "deflate#deflateEnd#deflateInit_#deflateParams#deflateSetDictionary"
-$ module2 = "gzclose#gzerror#gzgetc#gzgets#gzopen#gzprintf#gzputc#gzputs#gzread"
-$ module3 = "gzseek#gztell#inflate#inflateEnd#inflateInit_#inflateSetDictionary"
-$ module4 = "inflateSync#uncompress#zlibVersion#compress"
-$ open/read map 'p1
-$ if axp .or. ia64
-$ then
-$ open/write aopt a.opt
-$ open/write bopt b.opt
-$ write aopt " CASE_SENSITIVE=YES"
-$ write bopt "SYMBOL_VECTOR= (-"
-$ mod_sym_num = 1
-$ MOD_SYM_LOOP:
-$ if f$type(module'mod_sym_num') .nes. ""
-$ then
-$ mod_in = 0
-$ MOD_SYM_IN:
-$ shared_proc = f$element(mod_in, "#", module'mod_sym_num')
-$ if shared_proc .nes. "#"
-$ then
-$ write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",-
- f$edit(shared_proc,"upcase"),shared_proc)
-$ write bopt f$fao("!AS=PROCEDURE,-",shared_proc)
-$ mod_in = mod_in + 1
-$ goto mod_sym_in
-$ endif
-$ mod_sym_num = mod_sym_num + 1
-$ goto mod_sym_loop
-$ endif
-$MAP_LOOP:
-$ read/end=map_end map line
-$ if (f$locate("{",line).lt. f$length(line)) .or. -
- (f$locate("global:", line) .lt. f$length(line))
-$ then
-$ proc = true
-$ goto map_loop
-$ endif
-$ if f$locate("}",line).lt. f$length(line) then proc = false
-$ if f$locate("local:", line) .lt. f$length(line) then proc = false
-$ if proc
-$ then
-$ shared_proc = f$edit(line,"collapse")
-$ chop_semi = f$locate(";", shared_proc)
-$ if chop_semi .lt. f$length(shared_proc) then -
- shared_proc = f$extract(0, chop_semi, shared_proc)
-$ write aopt f$fao(" symbol_vector=(!AS/!AS=PROCEDURE)",-
- f$edit(shared_proc,"upcase"),shared_proc)
-$ write bopt f$fao("!AS=PROCEDURE,-",shared_proc)
-$ endif
-$ goto map_loop
-$MAP_END:
-$ close/nolog aopt
-$ close/nolog bopt
-$ open/append libopt 'p2'
-$ open/read aopt a.opt
-$ open/read bopt b.opt
-$ALOOP:
-$ read/end=aloop_end aopt line
-$ write libopt line
-$ goto aloop
-$ALOOP_END:
-$ close/nolog aopt
-$ sv = ""
-$BLOOP:
-$ read/end=bloop_end bopt svn
-$ if (svn.nes."")
-$ then
-$ if (sv.nes."") then write libopt sv
-$ sv = svn
-$ endif
-$ goto bloop
-$BLOOP_END:
-$ write libopt f$extract(0,f$length(sv)-2,sv), "-"
-$ write libopt ")"
-$ close/nolog bopt
-$ delete/nolog/noconf a.opt;*,b.opt;*
-$ else
-$ if vax
-$ then
-$ open/append libopt 'p2'
-$ mod_sym_num = 1
-$ VMOD_SYM_LOOP:
-$ if f$type(module'mod_sym_num') .nes. ""
-$ then
-$ mod_in = 0
-$ VMOD_SYM_IN:
-$ shared_proc = f$element(mod_in, "#", module'mod_sym_num')
-$ if shared_proc .nes. "#"
-$ then
-$ write libopt f$fao("UNIVERSAL=!AS",-
- f$edit(shared_proc,"upcase"))
-$ mod_in = mod_in + 1
-$ goto vmod_sym_in
-$ endif
-$ mod_sym_num = mod_sym_num + 1
-$ goto vmod_sym_loop
-$ endif
-$VMAP_LOOP:
-$ read/end=vmap_end map line
-$ if (f$locate("{",line).lt. f$length(line)) .or. -
- (f$locate("global:", line) .lt. f$length(line))
-$ then
-$ proc = true
-$ goto vmap_loop
-$ endif
-$ if f$locate("}",line).lt. f$length(line) then proc = false
-$ if f$locate("local:", line) .lt. f$length(line) then proc = false
-$ if proc
-$ then
-$ shared_proc = f$edit(line,"collapse")
-$ chop_semi = f$locate(";", shared_proc)
-$ if chop_semi .lt. f$length(shared_proc) then -
- shared_proc = f$extract(0, chop_semi, shared_proc)
-$ write libopt f$fao("UNIVERSAL=!AS",-
- f$edit(shared_proc,"upcase"))
-$ endif
-$ goto vmap_loop
-$VMAP_END:
-$ else
-$ write sys$output "Unknown Architecture (Not VAX, AXP, or IA64)"
-$ write sys$output "No options file created"
-$ endif
-$ endif
-$ EXIT_M2S:
-$ close/nolog map
-$ close/nolog libopt
-$ endsubroutine
+++ /dev/null
-<?xml version="1.0" ?>
-<package name="zlib" version="1.2.8">
- <library name="zlib" dlversion="1.2.8" dlname="z">
- <property name="description"> zip compression library </property>
- <property name="include-target-dir" value="$(@PACKAGE/install-includedir)" />
-
- <!-- fixme: not implemented yet -->
- <property name="compiler/c/inline" value="yes" />
-
- <include-file name="zlib.h" scope="public" mode="644" />
- <include-file name="zconf.h" scope="public" mode="644" />
-
- <source name="adler32.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- </source>
- <source name="compress.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- </source>
- <source name="crc32.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="crc32.h" />
- </source>
- <source name="gzclose.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="gzguts.h" />
- </source>
- <source name="gzlib.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="gzguts.h" />
- </source>
- <source name="gzread.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="gzguts.h" />
- </source>
- <source name="gzwrite.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="gzguts.h" />
- </source>
- <source name="uncompr.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- </source>
- <source name="deflate.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- <depend name="deflate.h" />
- </source>
- <source name="trees.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- <depend name="deflate.h" />
- <depend name="trees.h" />
- </source>
- <source name="zutil.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- </source>
- <source name="inflate.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- <depend name="inftrees.h" />
- <depend name="inflate.h" />
- <depend name="inffast.h" />
- </source>
- <source name="infback.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- <depend name="inftrees.h" />
- <depend name="inflate.h" />
- <depend name="inffast.h" />
- </source>
- <source name="inftrees.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- <depend name="inftrees.h" />
- </source>
- <source name="inffast.c">
- <depend name="zlib.h" />
- <depend name="zconf.h" />
- <depend name="zutil.h" />
- <depend name="inftrees.h" />
- <depend name="inflate.h" />
- <depend name="inffast.h" />
- </source>
- </library>
-</package>
-
-<!--
-CFLAGS=-O
-#CFLAGS=-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7
-#CFLAGS=-g -DDEBUG
-#CFLAGS=-O3 -Wall -Wwrite-strings -Wpointer-arith -Wconversion \
-# -Wstrict-prototypes -Wmissing-prototypes
-
-# OBJA =
-# to use the asm code: make OBJA=match.o
-#
-match.o: match.S
- $(CPP) match.S > _match.s
- $(CC) -c _match.s
- mv _match.o match.o
- rm -f _match.s
--->
+++ /dev/null
-/* trees.c -- output deflated data using Huffman coding
- * Copyright (C) 1995-2012 Jean-loup Gailly
- * detect_data_type() function provided freely by Cosmin Truta, 2006
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/*
- * ALGORITHM
- *
- * The "deflation" process uses several Huffman trees. The more
- * common source values are represented by shorter bit sequences.
- *
- * Each code tree is stored in a compressed form which is itself
- * a Huffman encoding of the lengths of all the code strings (in
- * ascending order by source values). The actual code strings are
- * reconstructed from the lengths in the inflate process, as described
- * in the deflate specification.
- *
- * REFERENCES
- *
- * Deutsch, L.P.,"'Deflate' Compressed Data Format Specification".
- * Available in ftp.uu.net:/pub/archiving/zip/doc/deflate-1.1.doc
- *
- * Storer, James A.
- * Data Compression: Methods and Theory, pp. 49-50.
- * Computer Science Press, 1988. ISBN 0-7167-8156-5.
- *
- * Sedgewick, R.
- * Algorithms, p290.
- * Addison-Wesley, 1983. ISBN 0-201-06672-6.
- */
-
-/* @(#) $Id$ */
-
-/* #define GEN_TREES_H */
-
-#include "deflate.h"
-
-#ifdef DEBUG
-# include <ctype.h>
-#endif
-
-/* ===========================================================================
- * Constants
- */
-
-#define MAX_BL_BITS 7
-/* Bit length codes must not exceed MAX_BL_BITS bits */
-
-#define END_BLOCK 256
-/* end of block literal code */
-
-#define REP_3_6 16
-/* repeat previous bit length 3-6 times (2 bits of repeat count) */
-
-#define REPZ_3_10 17
-/* repeat a zero length 3-10 times (3 bits of repeat count) */
-
-#define REPZ_11_138 18
-/* repeat a zero length 11-138 times (7 bits of repeat count) */
-
-local const int extra_lbits[LENGTH_CODES] /* extra bits for each length code */
- = {0,0,0,0,0,0,0,0,1,1,1,1,2,2,2,2,3,3,3,3,4,4,4,4,5,5,5,5,0};
-
-local const int extra_dbits[D_CODES] /* extra bits for each distance code */
- = {0,0,0,0,1,1,2,2,3,3,4,4,5,5,6,6,7,7,8,8,9,9,10,10,11,11,12,12,13,13};
-
-local const int extra_blbits[BL_CODES]/* extra bits for each bit length code */
- = {0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,2,3,7};
-
-local const uch bl_order[BL_CODES]
- = {16,17,18,0,8,7,9,6,10,5,11,4,12,3,13,2,14,1,15};
-/* The lengths of the bit length codes are sent in order of decreasing
- * probability, to avoid transmitting the lengths for unused bit length codes.
- */
-
-/* ===========================================================================
- * Local data. These are initialized only once.
- */
-
-#define DIST_CODE_LEN 512 /* see definition of array dist_code below */
-
-#if defined(GEN_TREES_H) || !defined(STDC)
-/* non ANSI compilers may not accept trees.h */
-
-local ct_data static_ltree[L_CODES+2];
-/* The static literal tree. Since the bit lengths are imposed, there is no
- * need for the L_CODES extra codes used during heap construction. However
- * The codes 286 and 287 are needed to build a canonical tree (see _tr_init
- * below).
- */
-
-local ct_data static_dtree[D_CODES];
-/* The static distance tree. (Actually a trivial tree since all codes use
- * 5 bits.)
- */
-
-uch _dist_code[DIST_CODE_LEN];
-/* Distance codes. The first 256 values correspond to the distances
- * 3 .. 258, the last 256 values correspond to the top 8 bits of
- * the 15 bit distances.
- */
-
-uch _length_code[MAX_MATCH-MIN_MATCH+1];
-/* length code for each normalized match length (0 == MIN_MATCH) */
-
-local int base_length[LENGTH_CODES];
-/* First normalized length for each code (0 = MIN_MATCH) */
-
-local int base_dist[D_CODES];
-/* First normalized distance for each code (0 = distance of 1) */
-
-#else
-# include "trees.h"
-#endif /* GEN_TREES_H */
-
-struct static_tree_desc_s {
- const ct_data *static_tree; /* static tree or NULL */
- const intf *extra_bits; /* extra bits for each code or NULL */
- int extra_base; /* base index for extra_bits */
- int elems; /* max number of elements in the tree */
- int max_length; /* max bit length for the codes */
-};
-
-local static_tree_desc static_l_desc =
-{static_ltree, extra_lbits, LITERALS+1, L_CODES, MAX_BITS};
-
-local static_tree_desc static_d_desc =
-{static_dtree, extra_dbits, 0, D_CODES, MAX_BITS};
-
-local static_tree_desc static_bl_desc =
-{(const ct_data *)0, extra_blbits, 0, BL_CODES, MAX_BL_BITS};
-
-/* ===========================================================================
- * Local (static) routines in this file.
- */
-
-local void tr_static_init OF((void));
-local void init_block OF((deflate_state *s));
-local void pqdownheap OF((deflate_state *s, ct_data *tree, int k));
-local void gen_bitlen OF((deflate_state *s, tree_desc *desc));
-local void gen_codes OF((ct_data *tree, int max_code, ushf *bl_count));
-local void build_tree OF((deflate_state *s, tree_desc *desc));
-local void scan_tree OF((deflate_state *s, ct_data *tree, int max_code));
-local void send_tree OF((deflate_state *s, ct_data *tree, int max_code));
-local int build_bl_tree OF((deflate_state *s));
-local void send_all_trees OF((deflate_state *s, int lcodes, int dcodes,
- int blcodes));
-local void compress_block OF((deflate_state *s, const ct_data *ltree,
- const ct_data *dtree));
-local int detect_data_type OF((deflate_state *s));
-local unsigned bi_reverse OF((unsigned value, int length));
-local void bi_windup OF((deflate_state *s));
-local void bi_flush OF((deflate_state *s));
-local void copy_block OF((deflate_state *s, charf *buf, unsigned len,
- int header));
-
-#ifdef GEN_TREES_H
-local void gen_trees_header OF((void));
-#endif
-
-#ifndef DEBUG
-# define send_code(s, c, tree) send_bits(s, tree[c].Code, tree[c].Len)
- /* Send a code of the given tree. c and tree must not have side effects */
-
-#else /* DEBUG */
-# define send_code(s, c, tree) \
- { if (z_verbose>2) fprintf(stderr,"\ncd %3d ",(c)); \
- send_bits(s, tree[c].Code, tree[c].Len); }
-#endif
-
-/* ===========================================================================
- * Output a short LSB first on the stream.
- * IN assertion: there is enough room in pendingBuf.
- */
-#define put_short(s, w) { \
- put_byte(s, (uch)((w) & 0xff)); \
- put_byte(s, (uch)((ush)(w) >> 8)); \
-}
-
-/* ===========================================================================
- * Send a value on a given number of bits.
- * IN assertion: length <= 16 and value fits in length bits.
- */
-#ifdef DEBUG
-local void send_bits OF((deflate_state *s, int value, int length));
-
-local void send_bits(s, value, length)
- deflate_state *s;
- int value; /* value to send */
- int length; /* number of bits */
-{
- Tracevv((stderr," l %2d v %4x ", length, value));
- Assert(length > 0 && length <= 15, "invalid length");
- s->bits_sent += (ulg)length;
-
- /* If not enough room in bi_buf, use (valid) bits from bi_buf and
- * (16 - bi_valid) bits from value, leaving (width - (16-bi_valid))
- * unused bits in value.
- */
- if (s->bi_valid > (int)Buf_size - length) {
- s->bi_buf |= (ush)value << s->bi_valid;
- put_short(s, s->bi_buf);
- s->bi_buf = (ush)value >> (Buf_size - s->bi_valid);
- s->bi_valid += length - Buf_size;
- } else {
- s->bi_buf |= (ush)value << s->bi_valid;
- s->bi_valid += length;
- }
-}
-#else /* !DEBUG */
-
-#define send_bits(s, value, length) \
-{ int len = length;\
- if (s->bi_valid > (int)Buf_size - len) {\
- int val = value;\
- s->bi_buf |= (ush)val << s->bi_valid;\
- put_short(s, s->bi_buf);\
- s->bi_buf = (ush)val >> (Buf_size - s->bi_valid);\
- s->bi_valid += len - Buf_size;\
- } else {\
- s->bi_buf |= (ush)(value) << s->bi_valid;\
- s->bi_valid += len;\
- }\
-}
-#endif /* DEBUG */
-
-
-/* the arguments must not have side effects */
-
-/* ===========================================================================
- * Initialize the various 'constant' tables.
- */
-local void tr_static_init()
-{
-#if defined(GEN_TREES_H) || !defined(STDC)
- static int static_init_done = 0;
- int n; /* iterates over tree elements */
- int bits; /* bit counter */
- int length; /* length value */
- int code; /* code value */
- int dist; /* distance index */
- ush bl_count[MAX_BITS+1];
- /* number of codes at each bit length for an optimal tree */
-
- if (static_init_done) return;
-
- /* For some embedded targets, global variables are not initialized: */
-#ifdef NO_INIT_GLOBAL_POINTERS
- static_l_desc.static_tree = static_ltree;
- static_l_desc.extra_bits = extra_lbits;
- static_d_desc.static_tree = static_dtree;
- static_d_desc.extra_bits = extra_dbits;
- static_bl_desc.extra_bits = extra_blbits;
-#endif
-
- /* Initialize the mapping length (0..255) -> length code (0..28) */
- length = 0;
- for (code = 0; code < LENGTH_CODES-1; code++) {
- base_length[code] = length;
- for (n = 0; n < (1<<extra_lbits[code]); n++) {
- _length_code[length++] = (uch)code;
- }
- }
- Assert (length == 256, "tr_static_init: length != 256");
- /* Note that the length 255 (match length 258) can be represented
- * in two different ways: code 284 + 5 bits or code 285, so we
- * overwrite length_code[255] to use the best encoding:
- */
- _length_code[length-1] = (uch)code;
-
- /* Initialize the mapping dist (0..32K) -> dist code (0..29) */
- dist = 0;
- for (code = 0 ; code < 16; code++) {
- base_dist[code] = dist;
- for (n = 0; n < (1<<extra_dbits[code]); n++) {
- _dist_code[dist++] = (uch)code;
- }
- }
- Assert (dist == 256, "tr_static_init: dist != 256");
- dist >>= 7; /* from now on, all distances are divided by 128 */
- for ( ; code < D_CODES; code++) {
- base_dist[code] = dist << 7;
- for (n = 0; n < (1<<(extra_dbits[code]-7)); n++) {
- _dist_code[256 + dist++] = (uch)code;
- }
- }
- Assert (dist == 256, "tr_static_init: 256+dist != 512");
-
- /* Construct the codes of the static literal tree */
- for (bits = 0; bits <= MAX_BITS; bits++) bl_count[bits] = 0;
- n = 0;
- while (n <= 143) static_ltree[n++].Len = 8, bl_count[8]++;
- while (n <= 255) static_ltree[n++].Len = 9, bl_count[9]++;
- while (n <= 279) static_ltree[n++].Len = 7, bl_count[7]++;
- while (n <= 287) static_ltree[n++].Len = 8, bl_count[8]++;
- /* Codes 286 and 287 do not exist, but we must include them in the
- * tree construction to get a canonical Huffman tree (longest code
- * all ones)
- */
- gen_codes((ct_data *)static_ltree, L_CODES+1, bl_count);
-
- /* The static distance tree is trivial: */
- for (n = 0; n < D_CODES; n++) {
- static_dtree[n].Len = 5;
- static_dtree[n].Code = bi_reverse((unsigned)n, 5);
- }
- static_init_done = 1;
-
-# ifdef GEN_TREES_H
- gen_trees_header();
-# endif
-#endif /* defined(GEN_TREES_H) || !defined(STDC) */
-}
-
-/* ===========================================================================
- * Genererate the file trees.h describing the static trees.
- */
-#ifdef GEN_TREES_H
-# ifndef DEBUG
-# include <stdio.h>
-# endif
-
-# define SEPARATOR(i, last, width) \
- ((i) == (last)? "\n};\n\n" : \
- ((i) % (width) == (width)-1 ? ",\n" : ", "))
-
-void gen_trees_header()
-{
- FILE *header = fopen("trees.h", "w");
- int i;
-
- Assert (header != NULL, "Can't open trees.h");
- fprintf(header,
- "/* header created automatically with -DGEN_TREES_H */\n\n");
-
- fprintf(header, "local const ct_data static_ltree[L_CODES+2] = {\n");
- for (i = 0; i < L_CODES+2; i++) {
- fprintf(header, "{{%3u},{%3u}}%s", static_ltree[i].Code,
- static_ltree[i].Len, SEPARATOR(i, L_CODES+1, 5));
- }
-
- fprintf(header, "local const ct_data static_dtree[D_CODES] = {\n");
- for (i = 0; i < D_CODES; i++) {
- fprintf(header, "{{%2u},{%2u}}%s", static_dtree[i].Code,
- static_dtree[i].Len, SEPARATOR(i, D_CODES-1, 5));
- }
-
- fprintf(header, "const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {\n");
- for (i = 0; i < DIST_CODE_LEN; i++) {
- fprintf(header, "%2u%s", _dist_code[i],
- SEPARATOR(i, DIST_CODE_LEN-1, 20));
- }
-
- fprintf(header,
- "const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {\n");
- for (i = 0; i < MAX_MATCH-MIN_MATCH+1; i++) {
- fprintf(header, "%2u%s", _length_code[i],
- SEPARATOR(i, MAX_MATCH-MIN_MATCH, 20));
- }
-
- fprintf(header, "local const int base_length[LENGTH_CODES] = {\n");
- for (i = 0; i < LENGTH_CODES; i++) {
- fprintf(header, "%1u%s", base_length[i],
- SEPARATOR(i, LENGTH_CODES-1, 20));
- }
-
- fprintf(header, "local const int base_dist[D_CODES] = {\n");
- for (i = 0; i < D_CODES; i++) {
- fprintf(header, "%5u%s", base_dist[i],
- SEPARATOR(i, D_CODES-1, 10));
- }
-
- fclose(header);
-}
-#endif /* GEN_TREES_H */
-
-/* ===========================================================================
- * Initialize the tree data structures for a new zlib stream.
- */
-void ZLIB_INTERNAL _tr_init(s)
- deflate_state *s;
-{
- tr_static_init();
-
- s->l_desc.dyn_tree = s->dyn_ltree;
- s->l_desc.stat_desc = &static_l_desc;
-
- s->d_desc.dyn_tree = s->dyn_dtree;
- s->d_desc.stat_desc = &static_d_desc;
-
- s->bl_desc.dyn_tree = s->bl_tree;
- s->bl_desc.stat_desc = &static_bl_desc;
-
- s->bi_buf = 0;
- s->bi_valid = 0;
-#ifdef DEBUG
- s->compressed_len = 0L;
- s->bits_sent = 0L;
-#endif
-
- /* Initialize the first block of the first file: */
- init_block(s);
-}
-
-/* ===========================================================================
- * Initialize a new block.
- */
-local void init_block(s)
- deflate_state *s;
-{
- int n; /* iterates over tree elements */
-
- /* Initialize the trees. */
- for (n = 0; n < L_CODES; n++) s->dyn_ltree[n].Freq = 0;
- for (n = 0; n < D_CODES; n++) s->dyn_dtree[n].Freq = 0;
- for (n = 0; n < BL_CODES; n++) s->bl_tree[n].Freq = 0;
-
- s->dyn_ltree[END_BLOCK].Freq = 1;
- s->opt_len = s->static_len = 0L;
- s->last_lit = s->matches = 0;
-}
-
-#define SMALLEST 1
-/* Index within the heap array of least frequent node in the Huffman tree */
-
-
-/* ===========================================================================
- * Remove the smallest element from the heap and recreate the heap with
- * one less element. Updates heap and heap_len.
- */
-#define pqremove(s, tree, top) \
-{\
- top = s->heap[SMALLEST]; \
- s->heap[SMALLEST] = s->heap[s->heap_len--]; \
- pqdownheap(s, tree, SMALLEST); \
-}
-
-/* ===========================================================================
- * Compares to subtrees, using the tree depth as tie breaker when
- * the subtrees have equal frequency. This minimizes the worst case length.
- */
-#define smaller(tree, n, m, depth) \
- (tree[n].Freq < tree[m].Freq || \
- (tree[n].Freq == tree[m].Freq && depth[n] <= depth[m]))
-
-/* ===========================================================================
- * Restore the heap property by moving down the tree starting at node k,
- * exchanging a node with the smallest of its two sons if necessary, stopping
- * when the heap property is re-established (each father smaller than its
- * two sons).
- */
-local void pqdownheap(s, tree, k)
- deflate_state *s;
- ct_data *tree; /* the tree to restore */
- int k; /* node to move down */
-{
- int v = s->heap[k];
- int j = k << 1; /* left son of k */
- while (j <= s->heap_len) {
- /* Set j to the smallest of the two sons: */
- if (j < s->heap_len &&
- smaller(tree, s->heap[j+1], s->heap[j], s->depth)) {
- j++;
- }
- /* Exit if v is smaller than both sons */
- if (smaller(tree, v, s->heap[j], s->depth)) break;
-
- /* Exchange v with the smallest son */
- s->heap[k] = s->heap[j]; k = j;
-
- /* And continue down the tree, setting j to the left son of k */
- j <<= 1;
- }
- s->heap[k] = v;
-}
-
-/* ===========================================================================
- * Compute the optimal bit lengths for a tree and update the total bit length
- * for the current block.
- * IN assertion: the fields freq and dad are set, heap[heap_max] and
- * above are the tree nodes sorted by increasing frequency.
- * OUT assertions: the field len is set to the optimal bit length, the
- * array bl_count contains the frequencies for each bit length.
- * The length opt_len is updated; static_len is also updated if stree is
- * not null.
- */
-local void gen_bitlen(s, desc)
- deflate_state *s;
- tree_desc *desc; /* the tree descriptor */
-{
- ct_data *tree = desc->dyn_tree;
- int max_code = desc->max_code;
- const ct_data *stree = desc->stat_desc->static_tree;
- const intf *extra = desc->stat_desc->extra_bits;
- int base = desc->stat_desc->extra_base;
- int max_length = desc->stat_desc->max_length;
- int h; /* heap index */
- int n, m; /* iterate over the tree elements */
- int bits; /* bit length */
- int xbits; /* extra bits */
- ush f; /* frequency */
- int overflow = 0; /* number of elements with bit length too large */
-
- for (bits = 0; bits <= MAX_BITS; bits++) s->bl_count[bits] = 0;
-
- /* In a first pass, compute the optimal bit lengths (which may
- * overflow in the case of the bit length tree).
- */
- tree[s->heap[s->heap_max]].Len = 0; /* root of the heap */
-
- for (h = s->heap_max+1; h < HEAP_SIZE; h++) {
- n = s->heap[h];
- bits = tree[tree[n].Dad].Len + 1;
- if (bits > max_length) bits = max_length, overflow++;
- tree[n].Len = (ush)bits;
- /* We overwrite tree[n].Dad which is no longer needed */
-
- if (n > max_code) continue; /* not a leaf node */
-
- s->bl_count[bits]++;
- xbits = 0;
- if (n >= base) xbits = extra[n-base];
- f = tree[n].Freq;
- s->opt_len += (ulg)f * (bits + xbits);
- if (stree) s->static_len += (ulg)f * (stree[n].Len + xbits);
- }
- if (overflow == 0) return;
-
- Trace((stderr,"\nbit length overflow\n"));
- /* This happens for example on obj2 and pic of the Calgary corpus */
-
- /* Find the first bit length which could increase: */
- do {
- bits = max_length-1;
- while (s->bl_count[bits] == 0) bits--;
- s->bl_count[bits]--; /* move one leaf down the tree */
- s->bl_count[bits+1] += 2; /* move one overflow item as its brother */
- s->bl_count[max_length]--;
- /* The brother of the overflow item also moves one step up,
- * but this does not affect bl_count[max_length]
- */
- overflow -= 2;
- } while (overflow > 0);
-
- /* Now recompute all bit lengths, scanning in increasing frequency.
- * h is still equal to HEAP_SIZE. (It is simpler to reconstruct all
- * lengths instead of fixing only the wrong ones. This idea is taken
- * from 'ar' written by Haruhiko Okumura.)
- */
- for (bits = max_length; bits != 0; bits--) {
- n = s->bl_count[bits];
- while (n != 0) {
- m = s->heap[--h];
- if (m > max_code) continue;
- if ((unsigned) tree[m].Len != (unsigned) bits) {
- Trace((stderr,"code %d bits %d->%d\n", m, tree[m].Len, bits));
- s->opt_len += ((long)bits - (long)tree[m].Len)
- *(long)tree[m].Freq;
- tree[m].Len = (ush)bits;
- }
- n--;
- }
- }
-}
-
-/* ===========================================================================
- * Generate the codes for a given tree and bit counts (which need not be
- * optimal).
- * IN assertion: the array bl_count contains the bit length statistics for
- * the given tree and the field len is set for all tree elements.
- * OUT assertion: the field code is set for all tree elements of non
- * zero code length.
- */
-local void gen_codes (tree, max_code, bl_count)
- ct_data *tree; /* the tree to decorate */
- int max_code; /* largest code with non zero frequency */
- ushf *bl_count; /* number of codes at each bit length */
-{
- ush next_code[MAX_BITS+1]; /* next code value for each bit length */
- ush code = 0; /* running code value */
- int bits; /* bit index */
- int n; /* code index */
-
- /* The distribution counts are first used to generate the code values
- * without bit reversal.
- */
- for (bits = 1; bits <= MAX_BITS; bits++) {
- next_code[bits] = code = (code + bl_count[bits-1]) << 1;
- }
- /* Check that the bit counts in bl_count are consistent. The last code
- * must be all ones.
- */
- Assert (code + bl_count[MAX_BITS]-1 == (1<<MAX_BITS)-1,
- "inconsistent bit counts");
- Tracev((stderr,"\ngen_codes: max_code %d ", max_code));
-
- for (n = 0; n <= max_code; n++) {
- int len = tree[n].Len;
- if (len == 0) continue;
- /* Now reverse the bits */
- tree[n].Code = bi_reverse(next_code[len]++, len);
-
- Tracecv(tree != static_ltree, (stderr,"\nn %3d %c l %2d c %4x (%x) ",
- n, (isgraph(n) ? n : ' '), len, tree[n].Code, next_code[len]-1));
- }
-}
-
-/* ===========================================================================
- * Construct one Huffman tree and assigns the code bit strings and lengths.
- * Update the total bit length for the current block.
- * IN assertion: the field freq is set for all tree elements.
- * OUT assertions: the fields len and code are set to the optimal bit length
- * and corresponding code. The length opt_len is updated; static_len is
- * also updated if stree is not null. The field max_code is set.
- */
-local void build_tree(s, desc)
- deflate_state *s;
- tree_desc *desc; /* the tree descriptor */
-{
- ct_data *tree = desc->dyn_tree;
- const ct_data *stree = desc->stat_desc->static_tree;
- int elems = desc->stat_desc->elems;
- int n, m; /* iterate over heap elements */
- int max_code = -1; /* largest code with non zero frequency */
- int node; /* new node being created */
-
- /* Construct the initial heap, with least frequent element in
- * heap[SMALLEST]. The sons of heap[n] are heap[2*n] and heap[2*n+1].
- * heap[0] is not used.
- */
- s->heap_len = 0, s->heap_max = HEAP_SIZE;
-
- for (n = 0; n < elems; n++) {
- if (tree[n].Freq != 0) {
- s->heap[++(s->heap_len)] = max_code = n;
- s->depth[n] = 0;
- } else {
- tree[n].Len = 0;
- }
- }
-
- /* The pkzip format requires that at least one distance code exists,
- * and that at least one bit should be sent even if there is only one
- * possible code. So to avoid special checks later on we force at least
- * two codes of non zero frequency.
- */
- while (s->heap_len < 2) {
- node = s->heap[++(s->heap_len)] = (max_code < 2 ? ++max_code : 0);
- tree[node].Freq = 1;
- s->depth[node] = 0;
- s->opt_len--; if (stree) s->static_len -= stree[node].Len;
- /* node is 0 or 1 so it does not have extra bits */
- }
- desc->max_code = max_code;
-
- /* The elements heap[heap_len/2+1 .. heap_len] are leaves of the tree,
- * establish sub-heaps of increasing lengths:
- */
- for (n = s->heap_len/2; n >= 1; n--) pqdownheap(s, tree, n);
-
- /* Construct the Huffman tree by repeatedly combining the least two
- * frequent nodes.
- */
- node = elems; /* next internal node of the tree */
- do {
- pqremove(s, tree, n); /* n = node of least frequency */
- m = s->heap[SMALLEST]; /* m = node of next least frequency */
-
- s->heap[--(s->heap_max)] = n; /* keep the nodes sorted by frequency */
- s->heap[--(s->heap_max)] = m;
-
- /* Create a new node father of n and m */
- tree[node].Freq = tree[n].Freq + tree[m].Freq;
- s->depth[node] = (uch)((s->depth[n] >= s->depth[m] ?
- s->depth[n] : s->depth[m]) + 1);
- tree[n].Dad = tree[m].Dad = (ush)node;
-#ifdef DUMP_BL_TREE
- if (tree == s->bl_tree) {
- fprintf(stderr,"\nnode %d(%d), sons %d(%d) %d(%d)",
- node, tree[node].Freq, n, tree[n].Freq, m, tree[m].Freq);
- }
-#endif
- /* and insert the new node in the heap */
- s->heap[SMALLEST] = node++;
- pqdownheap(s, tree, SMALLEST);
-
- } while (s->heap_len >= 2);
-
- s->heap[--(s->heap_max)] = s->heap[SMALLEST];
-
- /* At this point, the fields freq and dad are set. We can now
- * generate the bit lengths.
- */
- gen_bitlen(s, (tree_desc *)desc);
-
- /* The field len is now set, we can generate the bit codes */
- gen_codes ((ct_data *)tree, max_code, s->bl_count);
-}
-
-/* ===========================================================================
- * Scan a literal or distance tree to determine the frequencies of the codes
- * in the bit length tree.
- */
-local void scan_tree (s, tree, max_code)
- deflate_state *s;
- ct_data *tree; /* the tree to be scanned */
- int max_code; /* and its largest code of non zero frequency */
-{
- int n; /* iterates over all tree elements */
- int prevlen = -1; /* last emitted length */
- int curlen; /* length of current code */
- int nextlen = tree[0].Len; /* length of next code */
- int count = 0; /* repeat count of the current code */
- int max_count = 7; /* max repeat count */
- int min_count = 4; /* min repeat count */
-
- if (nextlen == 0) max_count = 138, min_count = 3;
- tree[max_code+1].Len = (ush)0xffff; /* guard */
-
- for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
- if (++count < max_count && curlen == nextlen) {
- continue;
- } else if (count < min_count) {
- s->bl_tree[curlen].Freq += count;
- } else if (curlen != 0) {
- if (curlen != prevlen) s->bl_tree[curlen].Freq++;
- s->bl_tree[REP_3_6].Freq++;
- } else if (count <= 10) {
- s->bl_tree[REPZ_3_10].Freq++;
- } else {
- s->bl_tree[REPZ_11_138].Freq++;
- }
- count = 0; prevlen = curlen;
- if (nextlen == 0) {
- max_count = 138, min_count = 3;
- } else if (curlen == nextlen) {
- max_count = 6, min_count = 3;
- } else {
- max_count = 7, min_count = 4;
- }
- }
-}
-
-/* ===========================================================================
- * Send a literal or distance tree in compressed form, using the codes in
- * bl_tree.
- */
-local void send_tree (s, tree, max_code)
- deflate_state *s;
- ct_data *tree; /* the tree to be scanned */
- int max_code; /* and its largest code of non zero frequency */
-{
- int n; /* iterates over all tree elements */
- int prevlen = -1; /* last emitted length */
- int curlen; /* length of current code */
- int nextlen = tree[0].Len; /* length of next code */
- int count = 0; /* repeat count of the current code */
- int max_count = 7; /* max repeat count */
- int min_count = 4; /* min repeat count */
-
- /* tree[max_code+1].Len = -1; */ /* guard already set */
- if (nextlen == 0) max_count = 138, min_count = 3;
-
- for (n = 0; n <= max_code; n++) {
- curlen = nextlen; nextlen = tree[n+1].Len;
- if (++count < max_count && curlen == nextlen) {
- continue;
- } else if (count < min_count) {
- do { send_code(s, curlen, s->bl_tree); } while (--count != 0);
-
- } else if (curlen != 0) {
- if (curlen != prevlen) {
- send_code(s, curlen, s->bl_tree); count--;
- }
- Assert(count >= 3 && count <= 6, " 3_6?");
- send_code(s, REP_3_6, s->bl_tree); send_bits(s, count-3, 2);
-
- } else if (count <= 10) {
- send_code(s, REPZ_3_10, s->bl_tree); send_bits(s, count-3, 3);
-
- } else {
- send_code(s, REPZ_11_138, s->bl_tree); send_bits(s, count-11, 7);
- }
- count = 0; prevlen = curlen;
- if (nextlen == 0) {
- max_count = 138, min_count = 3;
- } else if (curlen == nextlen) {
- max_count = 6, min_count = 3;
- } else {
- max_count = 7, min_count = 4;
- }
- }
-}
-
-/* ===========================================================================
- * Construct the Huffman tree for the bit lengths and return the index in
- * bl_order of the last bit length code to send.
- */
-local int build_bl_tree(s)
- deflate_state *s;
-{
- int max_blindex; /* index of last bit length code of non zero freq */
-
- /* Determine the bit length frequencies for literal and distance trees */
- scan_tree(s, (ct_data *)s->dyn_ltree, s->l_desc.max_code);
- scan_tree(s, (ct_data *)s->dyn_dtree, s->d_desc.max_code);
-
- /* Build the bit length tree: */
- build_tree(s, (tree_desc *)(&(s->bl_desc)));
- /* opt_len now includes the length of the tree representations, except
- * the lengths of the bit lengths codes and the 5+5+4 bits for the counts.
- */
-
- /* Determine the number of bit length codes to send. The pkzip format
- * requires that at least 4 bit length codes be sent. (appnote.txt says
- * 3 but the actual value used is 4.)
- */
- for (max_blindex = BL_CODES-1; max_blindex >= 3; max_blindex--) {
- if (s->bl_tree[bl_order[max_blindex]].Len != 0) break;
- }
- /* Update opt_len to include the bit length tree and counts */
- s->opt_len += 3*(max_blindex+1) + 5+5+4;
- Tracev((stderr, "\ndyn trees: dyn %ld, stat %ld",
- s->opt_len, s->static_len));
-
- return max_blindex;
-}
-
-/* ===========================================================================
- * Send the header for a block using dynamic Huffman trees: the counts, the
- * lengths of the bit length codes, the literal tree and the distance tree.
- * IN assertion: lcodes >= 257, dcodes >= 1, blcodes >= 4.
- */
-local void send_all_trees(s, lcodes, dcodes, blcodes)
- deflate_state *s;
- int lcodes, dcodes, blcodes; /* number of codes for each tree */
-{
- int rank; /* index in bl_order */
-
- Assert (lcodes >= 257 && dcodes >= 1 && blcodes >= 4, "not enough codes");
- Assert (lcodes <= L_CODES && dcodes <= D_CODES && blcodes <= BL_CODES,
- "too many codes");
- Tracev((stderr, "\nbl counts: "));
- send_bits(s, lcodes-257, 5); /* not +255 as stated in appnote.txt */
- send_bits(s, dcodes-1, 5);
- send_bits(s, blcodes-4, 4); /* not -3 as stated in appnote.txt */
- for (rank = 0; rank < blcodes; rank++) {
- Tracev((stderr, "\nbl code %2d ", bl_order[rank]));
- send_bits(s, s->bl_tree[bl_order[rank]].Len, 3);
- }
- Tracev((stderr, "\nbl tree: sent %ld", s->bits_sent));
-
- send_tree(s, (ct_data *)s->dyn_ltree, lcodes-1); /* literal tree */
- Tracev((stderr, "\nlit tree: sent %ld", s->bits_sent));
-
- send_tree(s, (ct_data *)s->dyn_dtree, dcodes-1); /* distance tree */
- Tracev((stderr, "\ndist tree: sent %ld", s->bits_sent));
-}
-
-/* ===========================================================================
- * Send a stored block
- */
-void ZLIB_INTERNAL _tr_stored_block(s, buf, stored_len, last)
- deflate_state *s;
- charf *buf; /* input block */
- ulg stored_len; /* length of input block */
- int last; /* one if this is the last block for a file */
-{
- send_bits(s, (STORED_BLOCK<<1)+last, 3); /* send block type */
-#ifdef DEBUG
- s->compressed_len = (s->compressed_len + 3 + 7) & (ulg)~7L;
- s->compressed_len += (stored_len + 4) << 3;
-#endif
- copy_block(s, buf, (unsigned)stored_len, 1); /* with header */
-}
-
-/* ===========================================================================
- * Flush the bits in the bit buffer to pending output (leaves at most 7 bits)
- */
-void ZLIB_INTERNAL _tr_flush_bits(s)
- deflate_state *s;
-{
- bi_flush(s);
-}
-
-/* ===========================================================================
- * Send one empty static block to give enough lookahead for inflate.
- * This takes 10 bits, of which 7 may remain in the bit buffer.
- */
-void ZLIB_INTERNAL _tr_align(s)
- deflate_state *s;
-{
- send_bits(s, STATIC_TREES<<1, 3);
- send_code(s, END_BLOCK, static_ltree);
-#ifdef DEBUG
- s->compressed_len += 10L; /* 3 for block type, 7 for EOB */
-#endif
- bi_flush(s);
-}
-
-/* ===========================================================================
- * Determine the best encoding for the current block: dynamic trees, static
- * trees or store, and output the encoded block to the zip file.
- */
-void ZLIB_INTERNAL _tr_flush_block(s, buf, stored_len, last)
- deflate_state *s;
- charf *buf; /* input block, or NULL if too old */
- ulg stored_len; /* length of input block */
- int last; /* one if this is the last block for a file */
-{
- ulg opt_lenb, static_lenb; /* opt_len and static_len in bytes */
- int max_blindex = 0; /* index of last bit length code of non zero freq */
-
- /* Build the Huffman trees unless a stored block is forced */
- if (s->level > 0) {
-
- /* Check if the file is binary or text */
- if (s->strm->data_type == Z_UNKNOWN)
- s->strm->data_type = detect_data_type(s);
-
- /* Construct the literal and distance trees */
- build_tree(s, (tree_desc *)(&(s->l_desc)));
- Tracev((stderr, "\nlit data: dyn %ld, stat %ld", s->opt_len,
- s->static_len));
-
- build_tree(s, (tree_desc *)(&(s->d_desc)));
- Tracev((stderr, "\ndist data: dyn %ld, stat %ld", s->opt_len,
- s->static_len));
- /* At this point, opt_len and static_len are the total bit lengths of
- * the compressed block data, excluding the tree representations.
- */
-
- /* Build the bit length tree for the above two trees, and get the index
- * in bl_order of the last bit length code to send.
- */
- max_blindex = build_bl_tree(s);
-
- /* Determine the best encoding. Compute the block lengths in bytes. */
- opt_lenb = (s->opt_len+3+7)>>3;
- static_lenb = (s->static_len+3+7)>>3;
-
- Tracev((stderr, "\nopt %lu(%lu) stat %lu(%lu) stored %lu lit %u ",
- opt_lenb, s->opt_len, static_lenb, s->static_len, stored_len,
- s->last_lit));
-
- if (static_lenb <= opt_lenb) opt_lenb = static_lenb;
-
- } else {
- Assert(buf != (char*)0, "lost buf");
- opt_lenb = static_lenb = stored_len + 5; /* force a stored block */
- }
-
-#ifdef FORCE_STORED
- if (buf != (char*)0) { /* force stored block */
-#else
- if (stored_len+4 <= opt_lenb && buf != (char*)0) {
- /* 4: two words for the lengths */
-#endif
- /* The test buf != NULL is only necessary if LIT_BUFSIZE > WSIZE.
- * Otherwise we can't have processed more than WSIZE input bytes since
- * the last block flush, because compression would have been
- * successful. If LIT_BUFSIZE <= WSIZE, it is never too late to
- * transform a block into a stored block.
- */
- _tr_stored_block(s, buf, stored_len, last);
-
-#ifdef FORCE_STATIC
- } else if (static_lenb >= 0) { /* force static trees */
-#else
- } else if (s->strategy == Z_FIXED || static_lenb == opt_lenb) {
-#endif
- send_bits(s, (STATIC_TREES<<1)+last, 3);
- compress_block(s, (const ct_data *)static_ltree,
- (const ct_data *)static_dtree);
-#ifdef DEBUG
- s->compressed_len += 3 + s->static_len;
-#endif
- } else {
- send_bits(s, (DYN_TREES<<1)+last, 3);
- send_all_trees(s, s->l_desc.max_code+1, s->d_desc.max_code+1,
- max_blindex+1);
- compress_block(s, (const ct_data *)s->dyn_ltree,
- (const ct_data *)s->dyn_dtree);
-#ifdef DEBUG
- s->compressed_len += 3 + s->opt_len;
-#endif
- }
- Assert (s->compressed_len == s->bits_sent, "bad compressed size");
- /* The above check is made mod 2^32, for files larger than 512 MB
- * and uLong implemented on 32 bits.
- */
- init_block(s);
-
- if (last) {
- bi_windup(s);
-#ifdef DEBUG
- s->compressed_len += 7; /* align on byte boundary */
-#endif
- }
- Tracev((stderr,"\ncomprlen %lu(%lu) ", s->compressed_len>>3,
- s->compressed_len-7*last));
-}
-
-/* ===========================================================================
- * Save the match info and tally the frequency counts. Return true if
- * the current block must be flushed.
- */
-int ZLIB_INTERNAL _tr_tally (s, dist, lc)
- deflate_state *s;
- unsigned dist; /* distance of matched string */
- unsigned lc; /* match length-MIN_MATCH or unmatched char (if dist==0) */
-{
- s->d_buf[s->last_lit] = (ush)dist;
- s->l_buf[s->last_lit++] = (uch)lc;
- if (dist == 0) {
- /* lc is the unmatched char */
- s->dyn_ltree[lc].Freq++;
- } else {
- s->matches++;
- /* Here, lc is the match length - MIN_MATCH */
- dist--; /* dist = match distance - 1 */
- Assert((ush)dist < (ush)MAX_DIST(s) &&
- (ush)lc <= (ush)(MAX_MATCH-MIN_MATCH) &&
- (ush)d_code(dist) < (ush)D_CODES, "_tr_tally: bad match");
-
- s->dyn_ltree[_length_code[lc]+LITERALS+1].Freq++;
- s->dyn_dtree[d_code(dist)].Freq++;
- }
-
-#ifdef TRUNCATE_BLOCK
- /* Try to guess if it is profitable to stop the current block here */
- if ((s->last_lit & 0x1fff) == 0 && s->level > 2) {
- /* Compute an upper bound for the compressed length */
- ulg out_length = (ulg)s->last_lit*8L;
- ulg in_length = (ulg)((long)s->strstart - s->block_start);
- int dcode;
- for (dcode = 0; dcode < D_CODES; dcode++) {
- out_length += (ulg)s->dyn_dtree[dcode].Freq *
- (5L+extra_dbits[dcode]);
- }
- out_length >>= 3;
- Tracev((stderr,"\nlast_lit %u, in %ld, out ~%ld(%ld%%) ",
- s->last_lit, in_length, out_length,
- 100L - out_length*100L/in_length));
- if (s->matches < s->last_lit/2 && out_length < in_length/2) return 1;
- }
-#endif
- return (s->last_lit == s->lit_bufsize-1);
- /* We avoid equality with lit_bufsize because of wraparound at 64K
- * on 16 bit machines and because stored blocks are restricted to
- * 64K-1 bytes.
- */
-}
-
-/* ===========================================================================
- * Send the block data compressed using the given Huffman trees
- */
-local void compress_block(s, ltree, dtree)
- deflate_state *s;
- const ct_data *ltree; /* literal tree */
- const ct_data *dtree; /* distance tree */
-{
- unsigned dist; /* distance of matched string */
- int lc; /* match length or unmatched char (if dist == 0) */
- unsigned lx = 0; /* running index in l_buf */
- unsigned code; /* the code to send */
- int extra; /* number of extra bits to send */
-
- if (s->last_lit != 0) do {
- dist = s->d_buf[lx];
- lc = s->l_buf[lx++];
- if (dist == 0) {
- send_code(s, lc, ltree); /* send a literal byte */
- Tracecv(isgraph(lc), (stderr," '%c' ", lc));
- } else {
- /* Here, lc is the match length - MIN_MATCH */
- code = _length_code[lc];
- send_code(s, code+LITERALS+1, ltree); /* send the length code */
- extra = extra_lbits[code];
- if (extra != 0) {
- lc -= base_length[code];
- send_bits(s, lc, extra); /* send the extra length bits */
- }
- dist--; /* dist is now the match distance - 1 */
- code = d_code(dist);
- Assert (code < D_CODES, "bad d_code");
-
- send_code(s, code, dtree); /* send the distance code */
- extra = extra_dbits[code];
- if (extra != 0) {
- dist -= base_dist[code];
- send_bits(s, dist, extra); /* send the extra distance bits */
- }
- } /* literal or match pair ? */
-
- /* Check that the overlay between pending_buf and d_buf+l_buf is ok: */
- Assert((uInt)(s->pending) < s->lit_bufsize + 2*lx,
- "pendingBuf overflow");
-
- } while (lx < s->last_lit);
-
- send_code(s, END_BLOCK, ltree);
-}
-
-/* ===========================================================================
- * Check if the data type is TEXT or BINARY, using the following algorithm:
- * - TEXT if the two conditions below are satisfied:
- * a) There are no non-portable control characters belonging to the
- * "black list" (0..6, 14..25, 28..31).
- * b) There is at least one printable character belonging to the
- * "white list" (9 {TAB}, 10 {LF}, 13 {CR}, 32..255).
- * - BINARY otherwise.
- * - The following partially-portable control characters form a
- * "gray list" that is ignored in this detection algorithm:
- * (7 {BEL}, 8 {BS}, 11 {VT}, 12 {FF}, 26 {SUB}, 27 {ESC}).
- * IN assertion: the fields Freq of dyn_ltree are set.
- */
-local int detect_data_type(s)
- deflate_state *s;
-{
- /* black_mask is the bit mask of black-listed bytes
- * set bits 0..6, 14..25, and 28..31
- * 0xf3ffc07f = binary 11110011111111111100000001111111
- */
- unsigned long black_mask = 0xf3ffc07fUL;
- int n;
-
- /* Check for non-textual ("black-listed") bytes. */
- for (n = 0; n <= 31; n++, black_mask >>= 1)
- if ((black_mask & 1) && (s->dyn_ltree[n].Freq != 0))
- return Z_BINARY;
-
- /* Check for textual ("white-listed") bytes. */
- if (s->dyn_ltree[9].Freq != 0 || s->dyn_ltree[10].Freq != 0
- || s->dyn_ltree[13].Freq != 0)
- return Z_TEXT;
- for (n = 32; n < LITERALS; n++)
- if (s->dyn_ltree[n].Freq != 0)
- return Z_TEXT;
-
- /* There are no "black-listed" or "white-listed" bytes:
- * this stream either is empty or has tolerated ("gray-listed") bytes only.
- */
- return Z_BINARY;
-}
-
-/* ===========================================================================
- * Reverse the first len bits of a code, using straightforward code (a faster
- * method would use a table)
- * IN assertion: 1 <= len <= 15
- */
-local unsigned bi_reverse(code, len)
- unsigned code; /* the value to invert */
- int len; /* its bit length */
-{
- register unsigned res = 0;
- do {
- res |= code & 1;
- code >>= 1, res <<= 1;
- } while (--len > 0);
- return res >> 1;
-}
-
-/* ===========================================================================
- * Flush the bit buffer, keeping at most 7 bits in it.
- */
-local void bi_flush(s)
- deflate_state *s;
-{
- if (s->bi_valid == 16) {
- put_short(s, s->bi_buf);
- s->bi_buf = 0;
- s->bi_valid = 0;
- } else if (s->bi_valid >= 8) {
- put_byte(s, (Byte)s->bi_buf);
- s->bi_buf >>= 8;
- s->bi_valid -= 8;
- }
-}
-
-/* ===========================================================================
- * Flush the bit buffer and align the output on a byte boundary
- */
-local void bi_windup(s)
- deflate_state *s;
-{
- if (s->bi_valid > 8) {
- put_short(s, s->bi_buf);
- } else if (s->bi_valid > 0) {
- put_byte(s, (Byte)s->bi_buf);
- }
- s->bi_buf = 0;
- s->bi_valid = 0;
-#ifdef DEBUG
- s->bits_sent = (s->bits_sent+7) & ~7;
-#endif
-}
-
-/* ===========================================================================
- * Copy a stored block, storing first the length and its
- * one's complement if requested.
- */
-local void copy_block(s, buf, len, header)
- deflate_state *s;
- charf *buf; /* the input data */
- unsigned len; /* its length */
- int header; /* true if block header must be written */
-{
- bi_windup(s); /* align on byte boundary */
-
- if (header) {
- put_short(s, (ush)len);
- put_short(s, (ush)~len);
-#ifdef DEBUG
- s->bits_sent += 2*16;
-#endif
- }
-#ifdef DEBUG
- s->bits_sent += (ulg)len<<3;
-#endif
- while (len--) {
- put_byte(s, *buf++);
- }
-}
+++ /dev/null
-/* header created automatically with -DGEN_TREES_H */
-
-local const ct_data static_ltree[L_CODES+2] = {
-{{ 12},{ 8}}, {{140},{ 8}}, {{ 76},{ 8}}, {{204},{ 8}}, {{ 44},{ 8}},
-{{172},{ 8}}, {{108},{ 8}}, {{236},{ 8}}, {{ 28},{ 8}}, {{156},{ 8}},
-{{ 92},{ 8}}, {{220},{ 8}}, {{ 60},{ 8}}, {{188},{ 8}}, {{124},{ 8}},
-{{252},{ 8}}, {{ 2},{ 8}}, {{130},{ 8}}, {{ 66},{ 8}}, {{194},{ 8}},
-{{ 34},{ 8}}, {{162},{ 8}}, {{ 98},{ 8}}, {{226},{ 8}}, {{ 18},{ 8}},
-{{146},{ 8}}, {{ 82},{ 8}}, {{210},{ 8}}, {{ 50},{ 8}}, {{178},{ 8}},
-{{114},{ 8}}, {{242},{ 8}}, {{ 10},{ 8}}, {{138},{ 8}}, {{ 74},{ 8}},
-{{202},{ 8}}, {{ 42},{ 8}}, {{170},{ 8}}, {{106},{ 8}}, {{234},{ 8}},
-{{ 26},{ 8}}, {{154},{ 8}}, {{ 90},{ 8}}, {{218},{ 8}}, {{ 58},{ 8}},
-{{186},{ 8}}, {{122},{ 8}}, {{250},{ 8}}, {{ 6},{ 8}}, {{134},{ 8}},
-{{ 70},{ 8}}, {{198},{ 8}}, {{ 38},{ 8}}, {{166},{ 8}}, {{102},{ 8}},
-{{230},{ 8}}, {{ 22},{ 8}}, {{150},{ 8}}, {{ 86},{ 8}}, {{214},{ 8}},
-{{ 54},{ 8}}, {{182},{ 8}}, {{118},{ 8}}, {{246},{ 8}}, {{ 14},{ 8}},
-{{142},{ 8}}, {{ 78},{ 8}}, {{206},{ 8}}, {{ 46},{ 8}}, {{174},{ 8}},
-{{110},{ 8}}, {{238},{ 8}}, {{ 30},{ 8}}, {{158},{ 8}}, {{ 94},{ 8}},
-{{222},{ 8}}, {{ 62},{ 8}}, {{190},{ 8}}, {{126},{ 8}}, {{254},{ 8}},
-{{ 1},{ 8}}, {{129},{ 8}}, {{ 65},{ 8}}, {{193},{ 8}}, {{ 33},{ 8}},
-{{161},{ 8}}, {{ 97},{ 8}}, {{225},{ 8}}, {{ 17},{ 8}}, {{145},{ 8}},
-{{ 81},{ 8}}, {{209},{ 8}}, {{ 49},{ 8}}, {{177},{ 8}}, {{113},{ 8}},
-{{241},{ 8}}, {{ 9},{ 8}}, {{137},{ 8}}, {{ 73},{ 8}}, {{201},{ 8}},
-{{ 41},{ 8}}, {{169},{ 8}}, {{105},{ 8}}, {{233},{ 8}}, {{ 25},{ 8}},
-{{153},{ 8}}, {{ 89},{ 8}}, {{217},{ 8}}, {{ 57},{ 8}}, {{185},{ 8}},
-{{121},{ 8}}, {{249},{ 8}}, {{ 5},{ 8}}, {{133},{ 8}}, {{ 69},{ 8}},
-{{197},{ 8}}, {{ 37},{ 8}}, {{165},{ 8}}, {{101},{ 8}}, {{229},{ 8}},
-{{ 21},{ 8}}, {{149},{ 8}}, {{ 85},{ 8}}, {{213},{ 8}}, {{ 53},{ 8}},
-{{181},{ 8}}, {{117},{ 8}}, {{245},{ 8}}, {{ 13},{ 8}}, {{141},{ 8}},
-{{ 77},{ 8}}, {{205},{ 8}}, {{ 45},{ 8}}, {{173},{ 8}}, {{109},{ 8}},
-{{237},{ 8}}, {{ 29},{ 8}}, {{157},{ 8}}, {{ 93},{ 8}}, {{221},{ 8}},
-{{ 61},{ 8}}, {{189},{ 8}}, {{125},{ 8}}, {{253},{ 8}}, {{ 19},{ 9}},
-{{275},{ 9}}, {{147},{ 9}}, {{403},{ 9}}, {{ 83},{ 9}}, {{339},{ 9}},
-{{211},{ 9}}, {{467},{ 9}}, {{ 51},{ 9}}, {{307},{ 9}}, {{179},{ 9}},
-{{435},{ 9}}, {{115},{ 9}}, {{371},{ 9}}, {{243},{ 9}}, {{499},{ 9}},
-{{ 11},{ 9}}, {{267},{ 9}}, {{139},{ 9}}, {{395},{ 9}}, {{ 75},{ 9}},
-{{331},{ 9}}, {{203},{ 9}}, {{459},{ 9}}, {{ 43},{ 9}}, {{299},{ 9}},
-{{171},{ 9}}, {{427},{ 9}}, {{107},{ 9}}, {{363},{ 9}}, {{235},{ 9}},
-{{491},{ 9}}, {{ 27},{ 9}}, {{283},{ 9}}, {{155},{ 9}}, {{411},{ 9}},
-{{ 91},{ 9}}, {{347},{ 9}}, {{219},{ 9}}, {{475},{ 9}}, {{ 59},{ 9}},
-{{315},{ 9}}, {{187},{ 9}}, {{443},{ 9}}, {{123},{ 9}}, {{379},{ 9}},
-{{251},{ 9}}, {{507},{ 9}}, {{ 7},{ 9}}, {{263},{ 9}}, {{135},{ 9}},
-{{391},{ 9}}, {{ 71},{ 9}}, {{327},{ 9}}, {{199},{ 9}}, {{455},{ 9}},
-{{ 39},{ 9}}, {{295},{ 9}}, {{167},{ 9}}, {{423},{ 9}}, {{103},{ 9}},
-{{359},{ 9}}, {{231},{ 9}}, {{487},{ 9}}, {{ 23},{ 9}}, {{279},{ 9}},
-{{151},{ 9}}, {{407},{ 9}}, {{ 87},{ 9}}, {{343},{ 9}}, {{215},{ 9}},
-{{471},{ 9}}, {{ 55},{ 9}}, {{311},{ 9}}, {{183},{ 9}}, {{439},{ 9}},
-{{119},{ 9}}, {{375},{ 9}}, {{247},{ 9}}, {{503},{ 9}}, {{ 15},{ 9}},
-{{271},{ 9}}, {{143},{ 9}}, {{399},{ 9}}, {{ 79},{ 9}}, {{335},{ 9}},
-{{207},{ 9}}, {{463},{ 9}}, {{ 47},{ 9}}, {{303},{ 9}}, {{175},{ 9}},
-{{431},{ 9}}, {{111},{ 9}}, {{367},{ 9}}, {{239},{ 9}}, {{495},{ 9}},
-{{ 31},{ 9}}, {{287},{ 9}}, {{159},{ 9}}, {{415},{ 9}}, {{ 95},{ 9}},
-{{351},{ 9}}, {{223},{ 9}}, {{479},{ 9}}, {{ 63},{ 9}}, {{319},{ 9}},
-{{191},{ 9}}, {{447},{ 9}}, {{127},{ 9}}, {{383},{ 9}}, {{255},{ 9}},
-{{511},{ 9}}, {{ 0},{ 7}}, {{ 64},{ 7}}, {{ 32},{ 7}}, {{ 96},{ 7}},
-{{ 16},{ 7}}, {{ 80},{ 7}}, {{ 48},{ 7}}, {{112},{ 7}}, {{ 8},{ 7}},
-{{ 72},{ 7}}, {{ 40},{ 7}}, {{104},{ 7}}, {{ 24},{ 7}}, {{ 88},{ 7}},
-{{ 56},{ 7}}, {{120},{ 7}}, {{ 4},{ 7}}, {{ 68},{ 7}}, {{ 36},{ 7}},
-{{100},{ 7}}, {{ 20},{ 7}}, {{ 84},{ 7}}, {{ 52},{ 7}}, {{116},{ 7}},
-{{ 3},{ 8}}, {{131},{ 8}}, {{ 67},{ 8}}, {{195},{ 8}}, {{ 35},{ 8}},
-{{163},{ 8}}, {{ 99},{ 8}}, {{227},{ 8}}
-};
-
-local const ct_data static_dtree[D_CODES] = {
-{{ 0},{ 5}}, {{16},{ 5}}, {{ 8},{ 5}}, {{24},{ 5}}, {{ 4},{ 5}},
-{{20},{ 5}}, {{12},{ 5}}, {{28},{ 5}}, {{ 2},{ 5}}, {{18},{ 5}},
-{{10},{ 5}}, {{26},{ 5}}, {{ 6},{ 5}}, {{22},{ 5}}, {{14},{ 5}},
-{{30},{ 5}}, {{ 1},{ 5}}, {{17},{ 5}}, {{ 9},{ 5}}, {{25},{ 5}},
-{{ 5},{ 5}}, {{21},{ 5}}, {{13},{ 5}}, {{29},{ 5}}, {{ 3},{ 5}},
-{{19},{ 5}}, {{11},{ 5}}, {{27},{ 5}}, {{ 7},{ 5}}, {{23},{ 5}}
-};
-
-const uch ZLIB_INTERNAL _dist_code[DIST_CODE_LEN] = {
- 0, 1, 2, 3, 4, 4, 5, 5, 6, 6, 6, 6, 7, 7, 7, 7, 8, 8, 8, 8,
- 8, 8, 8, 8, 9, 9, 9, 9, 9, 9, 9, 9, 10, 10, 10, 10, 10, 10, 10, 10,
-10, 10, 10, 10, 10, 10, 10, 10, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11,
-11, 11, 11, 11, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12,
-12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 13, 13, 13, 13,
-13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13, 13,
-13, 13, 13, 13, 13, 13, 13, 13, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14,
-14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 14, 15, 15, 15, 15, 15, 15, 15, 15,
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15,
-15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 15, 0, 0, 16, 17,
-18, 18, 19, 19, 20, 20, 20, 20, 21, 21, 21, 21, 22, 22, 22, 22, 22, 22, 22, 22,
-23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-24, 24, 24, 24, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27,
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
-27, 27, 27, 27, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28, 28,
-28, 28, 28, 28, 28, 28, 28, 28, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29,
-29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29, 29
-};
-
-const uch ZLIB_INTERNAL _length_code[MAX_MATCH-MIN_MATCH+1]= {
- 0, 1, 2, 3, 4, 5, 6, 7, 8, 8, 9, 9, 10, 10, 11, 11, 12, 12, 12, 12,
-13, 13, 13, 13, 14, 14, 14, 14, 15, 15, 15, 15, 16, 16, 16, 16, 16, 16, 16, 16,
-17, 17, 17, 17, 17, 17, 17, 17, 18, 18, 18, 18, 18, 18, 18, 18, 19, 19, 19, 19,
-19, 19, 19, 19, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20, 20,
-21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 21, 22, 22, 22, 22,
-22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 22, 23, 23, 23, 23, 23, 23, 23, 23,
-23, 23, 23, 23, 23, 23, 23, 23, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24, 24,
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25,
-25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 25, 26, 26, 26, 26, 26, 26, 26, 26,
-26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26, 26,
-26, 26, 26, 26, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27,
-27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 27, 28
-};
-
-local const int base_length[LENGTH_CODES] = {
-0, 1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 16, 20, 24, 28, 32, 40, 48, 56,
-64, 80, 96, 112, 128, 160, 192, 224, 0
-};
-
-local const int base_dist[D_CODES] = {
- 0, 1, 2, 3, 4, 6, 8, 12, 16, 24,
- 32, 48, 64, 96, 128, 192, 256, 384, 512, 768,
- 1024, 1536, 2048, 3072, 4096, 6144, 8192, 12288, 16384, 24576
-};
-
+++ /dev/null
-/* uncompr.c -- decompress a memory buffer
- * Copyright (C) 1995-2003, 2010 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#define ZLIB_INTERNAL
-#include "zlib.h"
-
-/* ===========================================================================
- Decompresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total
- size of the destination buffer, which must be large enough to hold the
- entire uncompressed data. (The size of the uncompressed data must have
- been saved previously by the compressor and transmitted to the decompressor
- by some mechanism outside the scope of this compression library.)
- Upon exit, destLen is the actual size of the compressed buffer.
-
- uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_BUF_ERROR if there was not enough room in the output
- buffer, or Z_DATA_ERROR if the input data was corrupted.
-*/
-int ZEXPORT uncompress (dest, destLen, source, sourceLen)
- Bytef *dest;
- uLongf *destLen;
- const Bytef *source;
- uLong sourceLen;
-{
- z_stream stream;
- int err;
-
- stream.next_in = (z_const Bytef *)source;
- stream.avail_in = (uInt)sourceLen;
- /* Check for source > 64K on 16-bit machine: */
- if ((uLong)stream.avail_in != sourceLen) return Z_BUF_ERROR;
-
- stream.next_out = dest;
- stream.avail_out = (uInt)*destLen;
- if ((uLong)stream.avail_out != *destLen) return Z_BUF_ERROR;
-
- stream.zalloc = (alloc_func)0;
- stream.zfree = (free_func)0;
-
- err = inflateInit(&stream);
- if (err != Z_OK) return err;
-
- err = inflate(&stream, Z_FINISH);
- if (err != Z_STREAM_END) {
- inflateEnd(&stream);
- if (err == Z_NEED_DICT || (err == Z_BUF_ERROR && stream.avail_in == 0))
- return Z_DATA_ERROR;
- return err;
- }
- *destLen = stream.total_out;
-
- err = inflateEnd(&stream);
- return err;
-}
+++ /dev/null
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2013 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZCONF_H
-#define ZCONF_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- * Even better than compiling with -DZ_PREFIX would be to use configure to set
- * this permanently in zconf.h using "./configure --zprefix".
- */
-#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
-# define Z_PREFIX_SET
-
-/* all linked symbols */
-# define _dist_code z__dist_code
-# define _length_code z__length_code
-# define _tr_align z__tr_align
-# define _tr_flush_bits z__tr_flush_bits
-# define _tr_flush_block z__tr_flush_block
-# define _tr_init z__tr_init
-# define _tr_stored_block z__tr_stored_block
-# define _tr_tally z__tr_tally
-# define adler32 z_adler32
-# define adler32_combine z_adler32_combine
-# define adler32_combine64 z_adler32_combine64
-# ifndef Z_SOLO
-# define compress z_compress
-# define compress2 z_compress2
-# define compressBound z_compressBound
-# endif
-# define crc32 z_crc32
-# define crc32_combine z_crc32_combine
-# define crc32_combine64 z_crc32_combine64
-# define deflate z_deflate
-# define deflateBound z_deflateBound
-# define deflateCopy z_deflateCopy
-# define deflateEnd z_deflateEnd
-# define deflateInit2_ z_deflateInit2_
-# define deflateInit_ z_deflateInit_
-# define deflateParams z_deflateParams
-# define deflatePending z_deflatePending
-# define deflatePrime z_deflatePrime
-# define deflateReset z_deflateReset
-# define deflateResetKeep z_deflateResetKeep
-# define deflateSetDictionary z_deflateSetDictionary
-# define deflateSetHeader z_deflateSetHeader
-# define deflateTune z_deflateTune
-# define deflate_copyright z_deflate_copyright
-# define get_crc_table z_get_crc_table
-# ifndef Z_SOLO
-# define gz_error z_gz_error
-# define gz_intmax z_gz_intmax
-# define gz_strwinerror z_gz_strwinerror
-# define gzbuffer z_gzbuffer
-# define gzclearerr z_gzclearerr
-# define gzclose z_gzclose
-# define gzclose_r z_gzclose_r
-# define gzclose_w z_gzclose_w
-# define gzdirect z_gzdirect
-# define gzdopen z_gzdopen
-# define gzeof z_gzeof
-# define gzerror z_gzerror
-# define gzflush z_gzflush
-# define gzgetc z_gzgetc
-# define gzgetc_ z_gzgetc_
-# define gzgets z_gzgets
-# define gzoffset z_gzoffset
-# define gzoffset64 z_gzoffset64
-# define gzopen z_gzopen
-# define gzopen64 z_gzopen64
-# ifdef _WIN32
-# define gzopen_w z_gzopen_w
-# endif
-# define gzprintf z_gzprintf
-# define gzvprintf z_gzvprintf
-# define gzputc z_gzputc
-# define gzputs z_gzputs
-# define gzread z_gzread
-# define gzrewind z_gzrewind
-# define gzseek z_gzseek
-# define gzseek64 z_gzseek64
-# define gzsetparams z_gzsetparams
-# define gztell z_gztell
-# define gztell64 z_gztell64
-# define gzungetc z_gzungetc
-# define gzwrite z_gzwrite
-# endif
-# define inflate z_inflate
-# define inflateBack z_inflateBack
-# define inflateBackEnd z_inflateBackEnd
-# define inflateBackInit_ z_inflateBackInit_
-# define inflateCopy z_inflateCopy
-# define inflateEnd z_inflateEnd
-# define inflateGetHeader z_inflateGetHeader
-# define inflateInit2_ z_inflateInit2_
-# define inflateInit_ z_inflateInit_
-# define inflateMark z_inflateMark
-# define inflatePrime z_inflatePrime
-# define inflateReset z_inflateReset
-# define inflateReset2 z_inflateReset2
-# define inflateSetDictionary z_inflateSetDictionary
-# define inflateGetDictionary z_inflateGetDictionary
-# define inflateSync z_inflateSync
-# define inflateSyncPoint z_inflateSyncPoint
-# define inflateUndermine z_inflateUndermine
-# define inflateResetKeep z_inflateResetKeep
-# define inflate_copyright z_inflate_copyright
-# define inflate_fast z_inflate_fast
-# define inflate_table z_inflate_table
-# ifndef Z_SOLO
-# define uncompress z_uncompress
-# endif
-# define zError z_zError
-# ifndef Z_SOLO
-# define zcalloc z_zcalloc
-# define zcfree z_zcfree
-# endif
-# define zlibCompileFlags z_zlibCompileFlags
-# define zlibVersion z_zlibVersion
-
-/* all zlib typedefs in zlib.h and zconf.h */
-# define Byte z_Byte
-# define Bytef z_Bytef
-# define alloc_func z_alloc_func
-# define charf z_charf
-# define free_func z_free_func
-# ifndef Z_SOLO
-# define gzFile z_gzFile
-# endif
-# define gz_header z_gz_header
-# define gz_headerp z_gz_headerp
-# define in_func z_in_func
-# define intf z_intf
-# define out_func z_out_func
-# define uInt z_uInt
-# define uIntf z_uIntf
-# define uLong z_uLong
-# define uLongf z_uLongf
-# define voidp z_voidp
-# define voidpc z_voidpc
-# define voidpf z_voidpf
-
-/* all zlib structs in zlib.h and zconf.h */
-# define gz_header_s z_gz_header_s
-# define internal_state z_internal_state
-
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-# define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-# define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-# define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-# ifndef WIN32
-# define WIN32
-# endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-# ifndef SYS16BIT
-# define SYS16BIT
-# endif
-# endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-# define MAXSEG_64K
-#endif
-#ifdef MSDOS
-# define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-# ifndef STDC
-# define STDC
-# endif
-# if __STDC_VERSION__ >= 199901L
-# ifndef STDC99
-# define STDC99
-# endif
-# endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-# define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
-# define STDC
-#endif
-
-#ifndef STDC
-# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-# define const /* note: need a more gentle solution here */
-# endif
-#endif
-
-#if defined(ZLIB_CONST) && !defined(z_const)
-# define z_const const
-#else
-# define z_const
-#endif
-
-/* Some Mac compilers merge all .h files incorrectly: */
-#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
-# define NO_DUMMY_DECL
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-# ifdef MAXSEG_64K
-# define MAX_MEM_LEVEL 8
-# else
-# define MAX_MEM_LEVEL 9
-# endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-# define MAX_WBITS 15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
- (1 << (windowBits+2)) + (1 << (memLevel+9))
- that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
- make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
- The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus a few kilobytes
- for small objects.
-*/
-
- /* Type declarations */
-
-#ifndef OF /* function prototypes */
-# ifdef STDC
-# define OF(args) args
-# else
-# define OF(args) ()
-# endif
-#endif
-
-#ifndef Z_ARG /* function prototypes for stdarg */
-# if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# define Z_ARG(args) args
-# else
-# define Z_ARG(args) ()
-# endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-# if defined(M_I86SM) || defined(M_I86MM)
- /* MSC small or medium model */
-# define SMALL_MEDIUM
-# ifdef _MSC_VER
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-# if (defined(__SMALL__) || defined(__MEDIUM__))
- /* Turbo C small or medium model */
-# define SMALL_MEDIUM
-# ifdef __BORLANDC__
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
- /* If building or using zlib as a DLL, define ZLIB_DLL.
- * This is not mandatory, but it offers a little performance increase.
- */
-# ifdef ZLIB_DLL
-# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-# ifdef ZLIB_INTERNAL
-# define ZEXTERN extern __declspec(dllexport)
-# else
-# define ZEXTERN extern __declspec(dllimport)
-# endif
-# endif
-# endif /* ZLIB_DLL */
- /* If building or using zlib with the WINAPI/WINAPIV calling convention,
- * define ZLIB_WINAPI.
- * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
- */
-# ifdef ZLIB_WINAPI
-# ifdef FAR
-# undef FAR
-# endif
-# include <windows.h>
- /* No need for _export, use ZLIB.DEF instead. */
- /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-# define ZEXPORT WINAPI
-# ifdef WIN32
-# define ZEXPORTVA WINAPIV
-# else
-# define ZEXPORTVA FAR CDECL
-# endif
-# endif
-#endif
-
-#if defined (__BEOS__)
-# ifdef ZLIB_DLL
-# ifdef ZLIB_INTERNAL
-# define ZEXPORT __declspec(dllexport)
-# define ZEXPORTVA __declspec(dllexport)
-# else
-# define ZEXPORT __declspec(dllimport)
-# define ZEXPORTVA __declspec(dllimport)
-# endif
-# endif
-#endif
-
-#ifndef ZEXTERN
-# define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-# define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-# define ZEXPORTVA
-#endif
-
-#ifndef FAR
-# define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char Byte; /* 8 bits */
-#endif
-typedef unsigned int uInt; /* 16 bits or more */
-typedef unsigned long uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
- /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-# define Bytef Byte FAR
-#else
- typedef Byte FAR Bytef;
-#endif
-typedef char FAR charf;
-typedef int FAR intf;
-typedef uInt FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
- typedef void const *voidpc;
- typedef void FAR *voidpf;
- typedef void *voidp;
-#else
- typedef Byte const *voidpc;
- typedef Byte FAR *voidpf;
- typedef Byte *voidp;
-#endif
-
-#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
-# include <limits.h>
-# if (UINT_MAX == 0xffffffffUL)
-# define Z_U4 unsigned
-# elif (ULONG_MAX == 0xffffffffUL)
-# define Z_U4 unsigned long
-# elif (USHRT_MAX == 0xffffffffUL)
-# define Z_U4 unsigned short
-# endif
-#endif
-
-#ifdef Z_U4
- typedef Z_U4 z_crc_t;
-#else
- typedef unsigned long z_crc_t;
-#endif
-
-#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
-# define Z_HAVE_UNISTD_H
-#endif
-
-#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */
-# define Z_HAVE_STDARG_H
-#endif
-
-#ifdef STDC
-# ifndef Z_SOLO
-# include <sys/types.h> /* for off_t */
-# endif
-#endif
-
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# ifndef Z_SOLO
-# include <stdarg.h> /* for va_list */
-# endif
-#endif
-
-#ifdef _WIN32
-# ifndef Z_SOLO
-# include <stddef.h> /* for wchar_t */
-# endif
-#endif
-
-/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
- * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
- * though the former does not conform to the LFS document), but considering
- * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
- * equivalently requesting no 64-bit operations
- */
-#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
-# undef _LARGEFILE64_SOURCE
-#endif
-
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
-#endif
-#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
-# ifdef VMS
-# include <unixio.h> /* for off_t */
-# endif
-# ifndef z_off_t
-# define z_off_t off_t
-# endif
-# endif
-#endif
-
-#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
-# define Z_LFS64
-#endif
-
-#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
-# define Z_LARGE64
-#endif
-
-#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
-# define Z_WANT64
-#endif
-
-#if !defined(SEEK_SET) && !defined(Z_SOLO)
-# define SEEK_SET 0 /* Seek from beginning of file. */
-# define SEEK_CUR 1 /* Seek from current position. */
-# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
-#endif
-
-#ifndef z_off_t
-# define z_off_t long
-#endif
-
-#if !defined(_WIN32) && defined(Z_LARGE64)
-# define z_off64_t off64_t
-#else
-# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
-# define z_off64_t __int64
-# else
-# define z_off64_t z_off_t
-# endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
- #pragma map(deflateInit_,"DEIN")
- #pragma map(deflateInit2_,"DEIN2")
- #pragma map(deflateEnd,"DEEND")
- #pragma map(deflateBound,"DEBND")
- #pragma map(inflateInit_,"ININ")
- #pragma map(inflateInit2_,"ININ2")
- #pragma map(inflateEnd,"INEND")
- #pragma map(inflateSync,"INSY")
- #pragma map(inflateSetDictionary,"INSEDI")
- #pragma map(compressBound,"CMBND")
- #pragma map(inflate_table,"INTABL")
- #pragma map(inflate_fast,"INFA")
- #pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */
+++ /dev/null
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2013 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZCONF_H
-#define ZCONF_H
-#cmakedefine Z_PREFIX
-#cmakedefine Z_HAVE_UNISTD_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- * Even better than compiling with -DZ_PREFIX would be to use configure to set
- * this permanently in zconf.h using "./configure --zprefix".
- */
-#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
-# define Z_PREFIX_SET
-
-/* all linked symbols */
-# define _dist_code z__dist_code
-# define _length_code z__length_code
-# define _tr_align z__tr_align
-# define _tr_flush_bits z__tr_flush_bits
-# define _tr_flush_block z__tr_flush_block
-# define _tr_init z__tr_init
-# define _tr_stored_block z__tr_stored_block
-# define _tr_tally z__tr_tally
-# define adler32 z_adler32
-# define adler32_combine z_adler32_combine
-# define adler32_combine64 z_adler32_combine64
-# ifndef Z_SOLO
-# define compress z_compress
-# define compress2 z_compress2
-# define compressBound z_compressBound
-# endif
-# define crc32 z_crc32
-# define crc32_combine z_crc32_combine
-# define crc32_combine64 z_crc32_combine64
-# define deflate z_deflate
-# define deflateBound z_deflateBound
-# define deflateCopy z_deflateCopy
-# define deflateEnd z_deflateEnd
-# define deflateInit2_ z_deflateInit2_
-# define deflateInit_ z_deflateInit_
-# define deflateParams z_deflateParams
-# define deflatePending z_deflatePending
-# define deflatePrime z_deflatePrime
-# define deflateReset z_deflateReset
-# define deflateResetKeep z_deflateResetKeep
-# define deflateSetDictionary z_deflateSetDictionary
-# define deflateSetHeader z_deflateSetHeader
-# define deflateTune z_deflateTune
-# define deflate_copyright z_deflate_copyright
-# define get_crc_table z_get_crc_table
-# ifndef Z_SOLO
-# define gz_error z_gz_error
-# define gz_intmax z_gz_intmax
-# define gz_strwinerror z_gz_strwinerror
-# define gzbuffer z_gzbuffer
-# define gzclearerr z_gzclearerr
-# define gzclose z_gzclose
-# define gzclose_r z_gzclose_r
-# define gzclose_w z_gzclose_w
-# define gzdirect z_gzdirect
-# define gzdopen z_gzdopen
-# define gzeof z_gzeof
-# define gzerror z_gzerror
-# define gzflush z_gzflush
-# define gzgetc z_gzgetc
-# define gzgetc_ z_gzgetc_
-# define gzgets z_gzgets
-# define gzoffset z_gzoffset
-# define gzoffset64 z_gzoffset64
-# define gzopen z_gzopen
-# define gzopen64 z_gzopen64
-# ifdef _WIN32
-# define gzopen_w z_gzopen_w
-# endif
-# define gzprintf z_gzprintf
-# define gzvprintf z_gzvprintf
-# define gzputc z_gzputc
-# define gzputs z_gzputs
-# define gzread z_gzread
-# define gzrewind z_gzrewind
-# define gzseek z_gzseek
-# define gzseek64 z_gzseek64
-# define gzsetparams z_gzsetparams
-# define gztell z_gztell
-# define gztell64 z_gztell64
-# define gzungetc z_gzungetc
-# define gzwrite z_gzwrite
-# endif
-# define inflate z_inflate
-# define inflateBack z_inflateBack
-# define inflateBackEnd z_inflateBackEnd
-# define inflateBackInit_ z_inflateBackInit_
-# define inflateCopy z_inflateCopy
-# define inflateEnd z_inflateEnd
-# define inflateGetHeader z_inflateGetHeader
-# define inflateInit2_ z_inflateInit2_
-# define inflateInit_ z_inflateInit_
-# define inflateMark z_inflateMark
-# define inflatePrime z_inflatePrime
-# define inflateReset z_inflateReset
-# define inflateReset2 z_inflateReset2
-# define inflateSetDictionary z_inflateSetDictionary
-# define inflateGetDictionary z_inflateGetDictionary
-# define inflateSync z_inflateSync
-# define inflateSyncPoint z_inflateSyncPoint
-# define inflateUndermine z_inflateUndermine
-# define inflateResetKeep z_inflateResetKeep
-# define inflate_copyright z_inflate_copyright
-# define inflate_fast z_inflate_fast
-# define inflate_table z_inflate_table
-# ifndef Z_SOLO
-# define uncompress z_uncompress
-# endif
-# define zError z_zError
-# ifndef Z_SOLO
-# define zcalloc z_zcalloc
-# define zcfree z_zcfree
-# endif
-# define zlibCompileFlags z_zlibCompileFlags
-# define zlibVersion z_zlibVersion
-
-/* all zlib typedefs in zlib.h and zconf.h */
-# define Byte z_Byte
-# define Bytef z_Bytef
-# define alloc_func z_alloc_func
-# define charf z_charf
-# define free_func z_free_func
-# ifndef Z_SOLO
-# define gzFile z_gzFile
-# endif
-# define gz_header z_gz_header
-# define gz_headerp z_gz_headerp
-# define in_func z_in_func
-# define intf z_intf
-# define out_func z_out_func
-# define uInt z_uInt
-# define uIntf z_uIntf
-# define uLong z_uLong
-# define uLongf z_uLongf
-# define voidp z_voidp
-# define voidpc z_voidpc
-# define voidpf z_voidpf
-
-/* all zlib structs in zlib.h and zconf.h */
-# define gz_header_s z_gz_header_s
-# define internal_state z_internal_state
-
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-# define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-# define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-# define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-# ifndef WIN32
-# define WIN32
-# endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-# ifndef SYS16BIT
-# define SYS16BIT
-# endif
-# endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-# define MAXSEG_64K
-#endif
-#ifdef MSDOS
-# define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-# ifndef STDC
-# define STDC
-# endif
-# if __STDC_VERSION__ >= 199901L
-# ifndef STDC99
-# define STDC99
-# endif
-# endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-# define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
-# define STDC
-#endif
-
-#ifndef STDC
-# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-# define const /* note: need a more gentle solution here */
-# endif
-#endif
-
-#if defined(ZLIB_CONST) && !defined(z_const)
-# define z_const const
-#else
-# define z_const
-#endif
-
-/* Some Mac compilers merge all .h files incorrectly: */
-#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
-# define NO_DUMMY_DECL
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-# ifdef MAXSEG_64K
-# define MAX_MEM_LEVEL 8
-# else
-# define MAX_MEM_LEVEL 9
-# endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-# define MAX_WBITS 15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
- (1 << (windowBits+2)) + (1 << (memLevel+9))
- that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
- make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
- The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus a few kilobytes
- for small objects.
-*/
-
- /* Type declarations */
-
-#ifndef OF /* function prototypes */
-# ifdef STDC
-# define OF(args) args
-# else
-# define OF(args) ()
-# endif
-#endif
-
-#ifndef Z_ARG /* function prototypes for stdarg */
-# if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# define Z_ARG(args) args
-# else
-# define Z_ARG(args) ()
-# endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-# if defined(M_I86SM) || defined(M_I86MM)
- /* MSC small or medium model */
-# define SMALL_MEDIUM
-# ifdef _MSC_VER
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-# if (defined(__SMALL__) || defined(__MEDIUM__))
- /* Turbo C small or medium model */
-# define SMALL_MEDIUM
-# ifdef __BORLANDC__
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
- /* If building or using zlib as a DLL, define ZLIB_DLL.
- * This is not mandatory, but it offers a little performance increase.
- */
-# ifdef ZLIB_DLL
-# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-# ifdef ZLIB_INTERNAL
-# define ZEXTERN extern __declspec(dllexport)
-# else
-# define ZEXTERN extern __declspec(dllimport)
-# endif
-# endif
-# endif /* ZLIB_DLL */
- /* If building or using zlib with the WINAPI/WINAPIV calling convention,
- * define ZLIB_WINAPI.
- * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
- */
-# ifdef ZLIB_WINAPI
-# ifdef FAR
-# undef FAR
-# endif
-# include <windows.h>
- /* No need for _export, use ZLIB.DEF instead. */
- /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-# define ZEXPORT WINAPI
-# ifdef WIN32
-# define ZEXPORTVA WINAPIV
-# else
-# define ZEXPORTVA FAR CDECL
-# endif
-# endif
-#endif
-
-#if defined (__BEOS__)
-# ifdef ZLIB_DLL
-# ifdef ZLIB_INTERNAL
-# define ZEXPORT __declspec(dllexport)
-# define ZEXPORTVA __declspec(dllexport)
-# else
-# define ZEXPORT __declspec(dllimport)
-# define ZEXPORTVA __declspec(dllimport)
-# endif
-# endif
-#endif
-
-#ifndef ZEXTERN
-# define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-# define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-# define ZEXPORTVA
-#endif
-
-#ifndef FAR
-# define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char Byte; /* 8 bits */
-#endif
-typedef unsigned int uInt; /* 16 bits or more */
-typedef unsigned long uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
- /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-# define Bytef Byte FAR
-#else
- typedef Byte FAR Bytef;
-#endif
-typedef char FAR charf;
-typedef int FAR intf;
-typedef uInt FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
- typedef void const *voidpc;
- typedef void FAR *voidpf;
- typedef void *voidp;
-#else
- typedef Byte const *voidpc;
- typedef Byte FAR *voidpf;
- typedef Byte *voidp;
-#endif
-
-#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
-# include <limits.h>
-# if (UINT_MAX == 0xffffffffUL)
-# define Z_U4 unsigned
-# elif (ULONG_MAX == 0xffffffffUL)
-# define Z_U4 unsigned long
-# elif (USHRT_MAX == 0xffffffffUL)
-# define Z_U4 unsigned short
-# endif
-#endif
-
-#ifdef Z_U4
- typedef Z_U4 z_crc_t;
-#else
- typedef unsigned long z_crc_t;
-#endif
-
-#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
-# define Z_HAVE_UNISTD_H
-#endif
-
-#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */
-# define Z_HAVE_STDARG_H
-#endif
-
-#ifdef STDC
-# ifndef Z_SOLO
-# include <sys/types.h> /* for off_t */
-# endif
-#endif
-
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# ifndef Z_SOLO
-# include <stdarg.h> /* for va_list */
-# endif
-#endif
-
-#ifdef _WIN32
-# ifndef Z_SOLO
-# include <stddef.h> /* for wchar_t */
-# endif
-#endif
-
-/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
- * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
- * though the former does not conform to the LFS document), but considering
- * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
- * equivalently requesting no 64-bit operations
- */
-#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
-# undef _LARGEFILE64_SOURCE
-#endif
-
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
-#endif
-#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
-# ifdef VMS
-# include <unixio.h> /* for off_t */
-# endif
-# ifndef z_off_t
-# define z_off_t off_t
-# endif
-# endif
-#endif
-
-#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
-# define Z_LFS64
-#endif
-
-#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
-# define Z_LARGE64
-#endif
-
-#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
-# define Z_WANT64
-#endif
-
-#if !defined(SEEK_SET) && !defined(Z_SOLO)
-# define SEEK_SET 0 /* Seek from beginning of file. */
-# define SEEK_CUR 1 /* Seek from current position. */
-# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
-#endif
-
-#ifndef z_off_t
-# define z_off_t long
-#endif
-
-#if !defined(_WIN32) && defined(Z_LARGE64)
-# define z_off64_t off64_t
-#else
-# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
-# define z_off64_t __int64
-# else
-# define z_off64_t z_off_t
-# endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
- #pragma map(deflateInit_,"DEIN")
- #pragma map(deflateInit2_,"DEIN2")
- #pragma map(deflateEnd,"DEEND")
- #pragma map(deflateBound,"DEBND")
- #pragma map(inflateInit_,"ININ")
- #pragma map(inflateInit2_,"ININ2")
- #pragma map(inflateEnd,"INEND")
- #pragma map(inflateSync,"INSY")
- #pragma map(inflateSetDictionary,"INSEDI")
- #pragma map(compressBound,"CMBND")
- #pragma map(inflate_table,"INTABL")
- #pragma map(inflate_fast,"INFA")
- #pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */
+++ /dev/null
-/* zconf.h -- configuration of the zlib compression library
- * Copyright (C) 1995-2013 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZCONF_H
-#define ZCONF_H
-
-/*
- * If you *really* need a unique prefix for all types and library functions,
- * compile with -DZ_PREFIX. The "standard" zlib should be compiled without it.
- * Even better than compiling with -DZ_PREFIX would be to use configure to set
- * this permanently in zconf.h using "./configure --zprefix".
- */
-#ifdef Z_PREFIX /* may be set to #if 1 by ./configure */
-# define Z_PREFIX_SET
-
-/* all linked symbols */
-# define _dist_code z__dist_code
-# define _length_code z__length_code
-# define _tr_align z__tr_align
-# define _tr_flush_bits z__tr_flush_bits
-# define _tr_flush_block z__tr_flush_block
-# define _tr_init z__tr_init
-# define _tr_stored_block z__tr_stored_block
-# define _tr_tally z__tr_tally
-# define adler32 z_adler32
-# define adler32_combine z_adler32_combine
-# define adler32_combine64 z_adler32_combine64
-# ifndef Z_SOLO
-# define compress z_compress
-# define compress2 z_compress2
-# define compressBound z_compressBound
-# endif
-# define crc32 z_crc32
-# define crc32_combine z_crc32_combine
-# define crc32_combine64 z_crc32_combine64
-# define deflate z_deflate
-# define deflateBound z_deflateBound
-# define deflateCopy z_deflateCopy
-# define deflateEnd z_deflateEnd
-# define deflateInit2_ z_deflateInit2_
-# define deflateInit_ z_deflateInit_
-# define deflateParams z_deflateParams
-# define deflatePending z_deflatePending
-# define deflatePrime z_deflatePrime
-# define deflateReset z_deflateReset
-# define deflateResetKeep z_deflateResetKeep
-# define deflateSetDictionary z_deflateSetDictionary
-# define deflateSetHeader z_deflateSetHeader
-# define deflateTune z_deflateTune
-# define deflate_copyright z_deflate_copyright
-# define get_crc_table z_get_crc_table
-# ifndef Z_SOLO
-# define gz_error z_gz_error
-# define gz_intmax z_gz_intmax
-# define gz_strwinerror z_gz_strwinerror
-# define gzbuffer z_gzbuffer
-# define gzclearerr z_gzclearerr
-# define gzclose z_gzclose
-# define gzclose_r z_gzclose_r
-# define gzclose_w z_gzclose_w
-# define gzdirect z_gzdirect
-# define gzdopen z_gzdopen
-# define gzeof z_gzeof
-# define gzerror z_gzerror
-# define gzflush z_gzflush
-# define gzgetc z_gzgetc
-# define gzgetc_ z_gzgetc_
-# define gzgets z_gzgets
-# define gzoffset z_gzoffset
-# define gzoffset64 z_gzoffset64
-# define gzopen z_gzopen
-# define gzopen64 z_gzopen64
-# ifdef _WIN32
-# define gzopen_w z_gzopen_w
-# endif
-# define gzprintf z_gzprintf
-# define gzvprintf z_gzvprintf
-# define gzputc z_gzputc
-# define gzputs z_gzputs
-# define gzread z_gzread
-# define gzrewind z_gzrewind
-# define gzseek z_gzseek
-# define gzseek64 z_gzseek64
-# define gzsetparams z_gzsetparams
-# define gztell z_gztell
-# define gztell64 z_gztell64
-# define gzungetc z_gzungetc
-# define gzwrite z_gzwrite
-# endif
-# define inflate z_inflate
-# define inflateBack z_inflateBack
-# define inflateBackEnd z_inflateBackEnd
-# define inflateBackInit_ z_inflateBackInit_
-# define inflateCopy z_inflateCopy
-# define inflateEnd z_inflateEnd
-# define inflateGetHeader z_inflateGetHeader
-# define inflateInit2_ z_inflateInit2_
-# define inflateInit_ z_inflateInit_
-# define inflateMark z_inflateMark
-# define inflatePrime z_inflatePrime
-# define inflateReset z_inflateReset
-# define inflateReset2 z_inflateReset2
-# define inflateSetDictionary z_inflateSetDictionary
-# define inflateGetDictionary z_inflateGetDictionary
-# define inflateSync z_inflateSync
-# define inflateSyncPoint z_inflateSyncPoint
-# define inflateUndermine z_inflateUndermine
-# define inflateResetKeep z_inflateResetKeep
-# define inflate_copyright z_inflate_copyright
-# define inflate_fast z_inflate_fast
-# define inflate_table z_inflate_table
-# ifndef Z_SOLO
-# define uncompress z_uncompress
-# endif
-# define zError z_zError
-# ifndef Z_SOLO
-# define zcalloc z_zcalloc
-# define zcfree z_zcfree
-# endif
-# define zlibCompileFlags z_zlibCompileFlags
-# define zlibVersion z_zlibVersion
-
-/* all zlib typedefs in zlib.h and zconf.h */
-# define Byte z_Byte
-# define Bytef z_Bytef
-# define alloc_func z_alloc_func
-# define charf z_charf
-# define free_func z_free_func
-# ifndef Z_SOLO
-# define gzFile z_gzFile
-# endif
-# define gz_header z_gz_header
-# define gz_headerp z_gz_headerp
-# define in_func z_in_func
-# define intf z_intf
-# define out_func z_out_func
-# define uInt z_uInt
-# define uIntf z_uIntf
-# define uLong z_uLong
-# define uLongf z_uLongf
-# define voidp z_voidp
-# define voidpc z_voidpc
-# define voidpf z_voidpf
-
-/* all zlib structs in zlib.h and zconf.h */
-# define gz_header_s z_gz_header_s
-# define internal_state z_internal_state
-
-#endif
-
-#if defined(__MSDOS__) && !defined(MSDOS)
-# define MSDOS
-#endif
-#if (defined(OS_2) || defined(__OS2__)) && !defined(OS2)
-# define OS2
-#endif
-#if defined(_WINDOWS) && !defined(WINDOWS)
-# define WINDOWS
-#endif
-#if defined(_WIN32) || defined(_WIN32_WCE) || defined(__WIN32__)
-# ifndef WIN32
-# define WIN32
-# endif
-#endif
-#if (defined(MSDOS) || defined(OS2) || defined(WINDOWS)) && !defined(WIN32)
-# if !defined(__GNUC__) && !defined(__FLAT__) && !defined(__386__)
-# ifndef SYS16BIT
-# define SYS16BIT
-# endif
-# endif
-#endif
-
-/*
- * Compile with -DMAXSEG_64K if the alloc function cannot allocate more
- * than 64k bytes at a time (needed on systems with 16-bit int).
- */
-#ifdef SYS16BIT
-# define MAXSEG_64K
-#endif
-#ifdef MSDOS
-# define UNALIGNED_OK
-#endif
-
-#ifdef __STDC_VERSION__
-# ifndef STDC
-# define STDC
-# endif
-# if __STDC_VERSION__ >= 199901L
-# ifndef STDC99
-# define STDC99
-# endif
-# endif
-#endif
-#if !defined(STDC) && (defined(__STDC__) || defined(__cplusplus))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(__GNUC__) || defined(__BORLANDC__))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(MSDOS) || defined(WINDOWS) || defined(WIN32))
-# define STDC
-#endif
-#if !defined(STDC) && (defined(OS2) || defined(__HOS_AIX__))
-# define STDC
-#endif
-
-#if defined(__OS400__) && !defined(STDC) /* iSeries (formerly AS/400). */
-# define STDC
-#endif
-
-#ifndef STDC
-# ifndef const /* cannot use !defined(STDC) && !defined(const) on Mac */
-# define const /* note: need a more gentle solution here */
-# endif
-#endif
-
-#if defined(ZLIB_CONST) && !defined(z_const)
-# define z_const const
-#else
-# define z_const
-#endif
-
-/* Some Mac compilers merge all .h files incorrectly: */
-#if defined(__MWERKS__)||defined(applec)||defined(THINK_C)||defined(__SC__)
-# define NO_DUMMY_DECL
-#endif
-
-/* Maximum value for memLevel in deflateInit2 */
-#ifndef MAX_MEM_LEVEL
-# ifdef MAXSEG_64K
-# define MAX_MEM_LEVEL 8
-# else
-# define MAX_MEM_LEVEL 9
-# endif
-#endif
-
-/* Maximum value for windowBits in deflateInit2 and inflateInit2.
- * WARNING: reducing MAX_WBITS makes minigzip unable to extract .gz files
- * created by gzip. (Files created by minigzip can still be extracted by
- * gzip.)
- */
-#ifndef MAX_WBITS
-# define MAX_WBITS 15 /* 32K LZ77 window */
-#endif
-
-/* The memory requirements for deflate are (in bytes):
- (1 << (windowBits+2)) + (1 << (memLevel+9))
- that is: 128K for windowBits=15 + 128K for memLevel = 8 (default values)
- plus a few kilobytes for small objects. For example, if you want to reduce
- the default memory requirements from 256K to 128K, compile with
- make CFLAGS="-O -DMAX_WBITS=14 -DMAX_MEM_LEVEL=7"
- Of course this will generally degrade compression (there's no free lunch).
-
- The memory requirements for inflate are (in bytes) 1 << windowBits
- that is, 32K for windowBits=15 (default value) plus a few kilobytes
- for small objects.
-*/
-
- /* Type declarations */
-
-#ifndef OF /* function prototypes */
-# ifdef STDC
-# define OF(args) args
-# else
-# define OF(args) ()
-# endif
-#endif
-
-#ifndef Z_ARG /* function prototypes for stdarg */
-# if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# define Z_ARG(args) args
-# else
-# define Z_ARG(args) ()
-# endif
-#endif
-
-/* The following definitions for FAR are needed only for MSDOS mixed
- * model programming (small or medium model with some far allocations).
- * This was tested only with MSC; for other MSDOS compilers you may have
- * to define NO_MEMCPY in zutil.h. If you don't need the mixed model,
- * just define FAR to be empty.
- */
-#ifdef SYS16BIT
-# if defined(M_I86SM) || defined(M_I86MM)
- /* MSC small or medium model */
-# define SMALL_MEDIUM
-# ifdef _MSC_VER
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-# if (defined(__SMALL__) || defined(__MEDIUM__))
- /* Turbo C small or medium model */
-# define SMALL_MEDIUM
-# ifdef __BORLANDC__
-# define FAR _far
-# else
-# define FAR far
-# endif
-# endif
-#endif
-
-#if defined(WINDOWS) || defined(WIN32)
- /* If building or using zlib as a DLL, define ZLIB_DLL.
- * This is not mandatory, but it offers a little performance increase.
- */
-# ifdef ZLIB_DLL
-# if defined(WIN32) && (!defined(__BORLANDC__) || (__BORLANDC__ >= 0x500))
-# ifdef ZLIB_INTERNAL
-# define ZEXTERN extern __declspec(dllexport)
-# else
-# define ZEXTERN extern __declspec(dllimport)
-# endif
-# endif
-# endif /* ZLIB_DLL */
- /* If building or using zlib with the WINAPI/WINAPIV calling convention,
- * define ZLIB_WINAPI.
- * Caution: the standard ZLIB1.DLL is NOT compiled using ZLIB_WINAPI.
- */
-# ifdef ZLIB_WINAPI
-# ifdef FAR
-# undef FAR
-# endif
-# include <windows.h>
- /* No need for _export, use ZLIB.DEF instead. */
- /* For complete Windows compatibility, use WINAPI, not __stdcall. */
-# define ZEXPORT WINAPI
-# ifdef WIN32
-# define ZEXPORTVA WINAPIV
-# else
-# define ZEXPORTVA FAR CDECL
-# endif
-# endif
-#endif
-
-#if defined (__BEOS__)
-# ifdef ZLIB_DLL
-# ifdef ZLIB_INTERNAL
-# define ZEXPORT __declspec(dllexport)
-# define ZEXPORTVA __declspec(dllexport)
-# else
-# define ZEXPORT __declspec(dllimport)
-# define ZEXPORTVA __declspec(dllimport)
-# endif
-# endif
-#endif
-
-#ifndef ZEXTERN
-# define ZEXTERN extern
-#endif
-#ifndef ZEXPORT
-# define ZEXPORT
-#endif
-#ifndef ZEXPORTVA
-# define ZEXPORTVA
-#endif
-
-#ifndef FAR
-# define FAR
-#endif
-
-#if !defined(__MACTYPES__)
-typedef unsigned char Byte; /* 8 bits */
-#endif
-typedef unsigned int uInt; /* 16 bits or more */
-typedef unsigned long uLong; /* 32 bits or more */
-
-#ifdef SMALL_MEDIUM
- /* Borland C/C++ and some old MSC versions ignore FAR inside typedef */
-# define Bytef Byte FAR
-#else
- typedef Byte FAR Bytef;
-#endif
-typedef char FAR charf;
-typedef int FAR intf;
-typedef uInt FAR uIntf;
-typedef uLong FAR uLongf;
-
-#ifdef STDC
- typedef void const *voidpc;
- typedef void FAR *voidpf;
- typedef void *voidp;
-#else
- typedef Byte const *voidpc;
- typedef Byte FAR *voidpf;
- typedef Byte *voidp;
-#endif
-
-#if !defined(Z_U4) && !defined(Z_SOLO) && defined(STDC)
-# include <limits.h>
-# if (UINT_MAX == 0xffffffffUL)
-# define Z_U4 unsigned
-# elif (ULONG_MAX == 0xffffffffUL)
-# define Z_U4 unsigned long
-# elif (USHRT_MAX == 0xffffffffUL)
-# define Z_U4 unsigned short
-# endif
-#endif
-
-#ifdef Z_U4
- typedef Z_U4 z_crc_t;
-#else
- typedef unsigned long z_crc_t;
-#endif
-
-#ifdef HAVE_UNISTD_H /* may be set to #if 1 by ./configure */
-# define Z_HAVE_UNISTD_H
-#endif
-
-#ifdef HAVE_STDARG_H /* may be set to #if 1 by ./configure */
-# define Z_HAVE_STDARG_H
-#endif
-
-#ifdef STDC
-# ifndef Z_SOLO
-# include <sys/types.h> /* for off_t */
-# endif
-#endif
-
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# ifndef Z_SOLO
-# include <stdarg.h> /* for va_list */
-# endif
-#endif
-
-#ifdef _WIN32
-# ifndef Z_SOLO
-# include <stddef.h> /* for wchar_t */
-# endif
-#endif
-
-/* a little trick to accommodate both "#define _LARGEFILE64_SOURCE" and
- * "#define _LARGEFILE64_SOURCE 1" as requesting 64-bit operations, (even
- * though the former does not conform to the LFS document), but considering
- * both "#undef _LARGEFILE64_SOURCE" and "#define _LARGEFILE64_SOURCE 0" as
- * equivalently requesting no 64-bit operations
- */
-#if defined(_LARGEFILE64_SOURCE) && -_LARGEFILE64_SOURCE - -1 == 1
-# undef _LARGEFILE64_SOURCE
-#endif
-
-#if defined(__WATCOMC__) && !defined(Z_HAVE_UNISTD_H)
-# define Z_HAVE_UNISTD_H
-#endif
-#ifndef Z_SOLO
-# if defined(Z_HAVE_UNISTD_H) || defined(_LARGEFILE64_SOURCE)
-# include <unistd.h> /* for SEEK_*, off_t, and _LFS64_LARGEFILE */
-# ifdef VMS
-# include <unixio.h> /* for off_t */
-# endif
-# ifndef z_off_t
-# define z_off_t off_t
-# endif
-# endif
-#endif
-
-#if defined(_LFS64_LARGEFILE) && _LFS64_LARGEFILE-0
-# define Z_LFS64
-#endif
-
-#if defined(_LARGEFILE64_SOURCE) && defined(Z_LFS64)
-# define Z_LARGE64
-#endif
-
-#if defined(_FILE_OFFSET_BITS) && _FILE_OFFSET_BITS-0 == 64 && defined(Z_LFS64)
-# define Z_WANT64
-#endif
-
-#if !defined(SEEK_SET) && !defined(Z_SOLO)
-# define SEEK_SET 0 /* Seek from beginning of file. */
-# define SEEK_CUR 1 /* Seek from current position. */
-# define SEEK_END 2 /* Set file pointer to EOF plus "offset" */
-#endif
-
-#ifndef z_off_t
-# define z_off_t long
-#endif
-
-#if !defined(_WIN32) && defined(Z_LARGE64)
-# define z_off64_t off64_t
-#else
-# if defined(_WIN32) && !defined(__GNUC__) && !defined(Z_SOLO)
-# define z_off64_t __int64
-# else
-# define z_off64_t z_off_t
-# endif
-#endif
-
-/* MVS linker does not support external names larger than 8 bytes */
-#if defined(__MVS__)
- #pragma map(deflateInit_,"DEIN")
- #pragma map(deflateInit2_,"DEIN2")
- #pragma map(deflateEnd,"DEEND")
- #pragma map(deflateBound,"DEBND")
- #pragma map(inflateInit_,"ININ")
- #pragma map(inflateInit2_,"ININ2")
- #pragma map(inflateEnd,"INEND")
- #pragma map(inflateSync,"INSY")
- #pragma map(inflateSetDictionary,"INSEDI")
- #pragma map(compressBound,"CMBND")
- #pragma map(inflate_table,"INTABL")
- #pragma map(inflate_fast,"INFA")
- #pragma map(inflate_copyright,"INCOPY")
-#endif
-
-#endif /* ZCONF_H */
+++ /dev/null
-.TH ZLIB 3 "28 Apr 2013"
-.SH NAME
-zlib \- compression/decompression library
-.SH SYNOPSIS
-[see
-.I zlib.h
-for full description]
-.SH DESCRIPTION
-The
-.I zlib
-library is a general purpose data compression library.
-The code is thread safe, assuming that the standard library functions
-used are thread safe, such as memory allocation routines.
-It provides in-memory compression and decompression functions,
-including integrity checks of the uncompressed data.
-This version of the library supports only one compression method (deflation)
-but other algorithms may be added later
-with the same stream interface.
-.LP
-Compression can be done in a single step if the buffers are large enough
-or can be done by repeated calls of the compression function.
-In the latter case,
-the application must provide more input and/or consume the output
-(providing more output space) before each call.
-.LP
-The library also supports reading and writing files in
-.IR gzip (1)
-(.gz) format
-with an interface similar to that of stdio.
-.LP
-The library does not install any signal handler.
-The decoder checks the consistency of the compressed data,
-so the library should never crash even in the case of corrupted input.
-.LP
-All functions of the compression library are documented in the file
-.IR zlib.h .
-The distribution source includes examples of use of the library
-in the files
-.I test/example.c
-and
-.IR test/minigzip.c,
-as well as other examples in the
-.IR examples/
-directory.
-.LP
-Changes to this version are documented in the file
-.I ChangeLog
-that accompanies the source.
-.LP
-.I zlib
-is available in Java using the java.util.zip package:
-.IP
-http://java.sun.com/developer/technicalArticles/Programming/compression/
-.LP
-A Perl interface to
-.IR zlib ,
-written by Paul Marquess (pmqs@cpan.org),
-is available at CPAN (Comprehensive Perl Archive Network) sites,
-including:
-.IP
-http://search.cpan.org/~pmqs/IO-Compress-Zlib/
-.LP
-A Python interface to
-.IR zlib ,
-written by A.M. Kuchling (amk@magnet.com),
-is available in Python 1.5 and later versions:
-.IP
-http://docs.python.org/library/zlib.html
-.LP
-.I zlib
-is built into
-.IR tcl:
-.IP
-http://wiki.tcl.tk/4610
-.LP
-An experimental package to read and write files in .zip format,
-written on top of
-.I zlib
-by Gilles Vollant (info@winimage.com),
-is available at:
-.IP
-http://www.winimage.com/zLibDll/minizip.html
-and also in the
-.I contrib/minizip
-directory of the main
-.I zlib
-source distribution.
-.SH "SEE ALSO"
-The
-.I zlib
-web site can be found at:
-.IP
-http://zlib.net/
-.LP
-The data format used by the zlib library is described by RFC
-(Request for Comments) 1950 to 1952 in the files:
-.IP
-http://tools.ietf.org/html/rfc1950 (for the zlib header and trailer format)
-.br
-http://tools.ietf.org/html/rfc1951 (for the deflate compressed data format)
-.br
-http://tools.ietf.org/html/rfc1952 (for the gzip header and trailer format)
-.LP
-Mark Nelson wrote an article about
-.I zlib
-for the Jan. 1997 issue of Dr. Dobb's Journal;
-a copy of the article is available at:
-.IP
-http://marknelson.us/1997/01/01/zlib-engine/
-.SH "REPORTING PROBLEMS"
-Before reporting a problem,
-please check the
-.I zlib
-web site to verify that you have the latest version of
-.IR zlib ;
-otherwise,
-obtain the latest version and see if the problem still exists.
-Please read the
-.I zlib
-FAQ at:
-.IP
-http://zlib.net/zlib_faq.html
-.LP
-before asking for help.
-Send questions and/or comments to zlib@gzip.org,
-or (for the Windows DLL version) to Gilles Vollant (info@winimage.com).
-.SH AUTHORS
-Version 1.2.8
-Copyright (C) 1995-2013 Jean-loup Gailly (jloup@gzip.org)
-and Mark Adler (madler@alumni.caltech.edu).
-.LP
-This software is provided "as-is,"
-without any express or implied warranty.
-In no event will the authors be held liable for any damages
-arising from the use of this software.
-See the distribution directory with respect to requirements
-governing redistribution.
-The deflate format used by
-.I zlib
-was defined by Phil Katz.
-The deflate and
-.I zlib
-specifications were written by L. Peter Deutsch.
-Thanks to all the people who reported problems and suggested various
-improvements in
-.IR zlib ;
-who are too numerous to cite here.
-.LP
-UNIX manual page by R. P. C. Rodgers,
-U.S. National Library of Medicine (rodgers@nlm.nih.gov).
-.\" end of man page
+++ /dev/null
-/* zlib.h -- interface of the 'zlib' general purpose compression library
- version 1.2.8, April 28th, 2013
-
- Copyright (C) 1995-2013 Jean-loup Gailly and Mark Adler
-
- This software is provided 'as-is', without any express or implied
- warranty. In no event will the authors be held liable for any damages
- arising from the use of this software.
-
- Permission is granted to anyone to use this software for any purpose,
- including commercial applications, and to alter it and redistribute it
- freely, subject to the following restrictions:
-
- 1. The origin of this software must not be misrepresented; you must not
- claim that you wrote the original software. If you use this software
- in a product, an acknowledgment in the product documentation would be
- appreciated but is not required.
- 2. Altered source versions must be plainly marked as such, and must not be
- misrepresented as being the original software.
- 3. This notice may not be removed or altered from any source distribution.
-
- Jean-loup Gailly Mark Adler
- jloup@gzip.org madler@alumni.caltech.edu
-
-
- The data format used by the zlib library is described by RFCs (Request for
- Comments) 1950 to 1952 in the files http://tools.ietf.org/html/rfc1950
- (zlib format), rfc1951 (deflate format) and rfc1952 (gzip format).
-*/
-
-#ifndef ZLIB_H
-#define ZLIB_H
-
-#include "zconf.h"
-
-#ifdef __cplusplus
-extern "C" {
-#endif
-
-#define ZLIB_VERSION "1.2.8"
-#define ZLIB_VERNUM 0x1280
-#define ZLIB_VER_MAJOR 1
-#define ZLIB_VER_MINOR 2
-#define ZLIB_VER_REVISION 8
-#define ZLIB_VER_SUBREVISION 0
-
-/*
- The 'zlib' compression library provides in-memory compression and
- decompression functions, including integrity checks of the uncompressed data.
- This version of the library supports only one compression method (deflation)
- but other algorithms will be added later and will have the same stream
- interface.
-
- Compression can be done in a single step if the buffers are large enough,
- or can be done by repeated calls of the compression function. In the latter
- case, the application must provide more input and/or consume the output
- (providing more output space) before each call.
-
- The compressed data format used by default by the in-memory functions is
- the zlib format, which is a zlib wrapper documented in RFC 1950, wrapped
- around a deflate stream, which is itself documented in RFC 1951.
-
- The library also supports reading and writing files in gzip (.gz) format
- with an interface similar to that of stdio using the functions that start
- with "gz". The gzip format is different from the zlib format. gzip is a
- gzip wrapper, documented in RFC 1952, wrapped around a deflate stream.
-
- This library can optionally read and write gzip streams in memory as well.
-
- The zlib format was designed to be compact and fast for use in memory
- and on communications channels. The gzip format was designed for single-
- file compression on file systems, has a larger header than zlib to maintain
- directory information, and uses a different, slower check method than zlib.
-
- The library does not install any signal handler. The decoder checks
- the consistency of the compressed data, so the library should never crash
- even in case of corrupted input.
-*/
-
-typedef voidpf (*alloc_func) OF((voidpf opaque, uInt items, uInt size));
-typedef void (*free_func) OF((voidpf opaque, voidpf address));
-
-struct internal_state;
-
-typedef struct z_stream_s {
- z_const Bytef *next_in; /* next input byte */
- uInt avail_in; /* number of bytes available at next_in */
- uLong total_in; /* total number of input bytes read so far */
-
- Bytef *next_out; /* next output byte should be put there */
- uInt avail_out; /* remaining free space at next_out */
- uLong total_out; /* total number of bytes output so far */
-
- z_const char *msg; /* last error message, NULL if no error */
- struct internal_state FAR *state; /* not visible by applications */
-
- alloc_func zalloc; /* used to allocate the internal state */
- free_func zfree; /* used to free the internal state */
- voidpf opaque; /* private data object passed to zalloc and zfree */
-
- int data_type; /* best guess about the data type: binary or text */
- uLong adler; /* adler32 value of the uncompressed data */
- uLong reserved; /* reserved for future use */
-} z_stream;
-
-typedef z_stream FAR *z_streamp;
-
-/*
- gzip header information passed to and from zlib routines. See RFC 1952
- for more details on the meanings of these fields.
-*/
-typedef struct gz_header_s {
- int text; /* true if compressed data believed to be text */
- uLong time; /* modification time */
- int xflags; /* extra flags (not used when writing a gzip file) */
- int os; /* operating system */
- Bytef *extra; /* pointer to extra field or Z_NULL if none */
- uInt extra_len; /* extra field length (valid if extra != Z_NULL) */
- uInt extra_max; /* space at extra (only when reading header) */
- Bytef *name; /* pointer to zero-terminated file name or Z_NULL */
- uInt name_max; /* space at name (only when reading header) */
- Bytef *comment; /* pointer to zero-terminated comment or Z_NULL */
- uInt comm_max; /* space at comment (only when reading header) */
- int hcrc; /* true if there was or will be a header crc */
- int done; /* true when done reading gzip header (not used
- when writing a gzip file) */
-} gz_header;
-
-typedef gz_header FAR *gz_headerp;
-
-/*
- The application must update next_in and avail_in when avail_in has dropped
- to zero. It must update next_out and avail_out when avail_out has dropped
- to zero. The application must initialize zalloc, zfree and opaque before
- calling the init function. All other fields are set by the compression
- library and must not be updated by the application.
-
- The opaque value provided by the application will be passed as the first
- parameter for calls of zalloc and zfree. This can be useful for custom
- memory management. The compression library attaches no meaning to the
- opaque value.
-
- zalloc must return Z_NULL if there is not enough memory for the object.
- If zlib is used in a multi-threaded application, zalloc and zfree must be
- thread safe.
-
- On 16-bit systems, the functions zalloc and zfree must be able to allocate
- exactly 65536 bytes, but will not be required to allocate more than this if
- the symbol MAXSEG_64K is defined (see zconf.h). WARNING: On MSDOS, pointers
- returned by zalloc for objects of exactly 65536 bytes *must* have their
- offset normalized to zero. The default allocation function provided by this
- library ensures this (see zutil.c). To reduce memory requirements and avoid
- any allocation of 64K objects, at the expense of compression ratio, compile
- the library with -DMAX_WBITS=14 (see zconf.h).
-
- The fields total_in and total_out can be used for statistics or progress
- reports. After compression, total_in holds the total size of the
- uncompressed data and may be saved for use in the decompressor (particularly
- if the decompressor wants to decompress everything in a single step).
-*/
-
- /* constants */
-
-#define Z_NO_FLUSH 0
-#define Z_PARTIAL_FLUSH 1
-#define Z_SYNC_FLUSH 2
-#define Z_FULL_FLUSH 3
-#define Z_FINISH 4
-#define Z_BLOCK 5
-#define Z_TREES 6
-/* Allowed flush values; see deflate() and inflate() below for details */
-
-#define Z_OK 0
-#define Z_STREAM_END 1
-#define Z_NEED_DICT 2
-#define Z_ERRNO (-1)
-#define Z_STREAM_ERROR (-2)
-#define Z_DATA_ERROR (-3)
-#define Z_MEM_ERROR (-4)
-#define Z_BUF_ERROR (-5)
-#define Z_VERSION_ERROR (-6)
-/* Return codes for the compression/decompression functions. Negative values
- * are errors, positive values are used for special but normal events.
- */
-
-#define Z_NO_COMPRESSION 0
-#define Z_BEST_SPEED 1
-#define Z_BEST_COMPRESSION 9
-#define Z_DEFAULT_COMPRESSION (-1)
-/* compression levels */
-
-#define Z_FILTERED 1
-#define Z_HUFFMAN_ONLY 2
-#define Z_RLE 3
-#define Z_FIXED 4
-#define Z_DEFAULT_STRATEGY 0
-/* compression strategy; see deflateInit2() below for details */
-
-#define Z_BINARY 0
-#define Z_TEXT 1
-#define Z_ASCII Z_TEXT /* for compatibility with 1.2.2 and earlier */
-#define Z_UNKNOWN 2
-/* Possible values of the data_type field (though see inflate()) */
-
-#define Z_DEFLATED 8
-/* The deflate compression method (the only one supported in this version) */
-
-#define Z_NULL 0 /* for initializing zalloc, zfree, opaque */
-
-#define zlib_version zlibVersion()
-/* for compatibility with versions < 1.0.2 */
-
-
- /* basic functions */
-
-ZEXTERN const char * ZEXPORT zlibVersion OF((void));
-/* The application can compare zlibVersion and ZLIB_VERSION for consistency.
- If the first character differs, the library code actually used is not
- compatible with the zlib.h header file used by the application. This check
- is automatically made by deflateInit and inflateInit.
- */
-
-/*
-ZEXTERN int ZEXPORT deflateInit OF((z_streamp strm, int level));
-
- Initializes the internal stream state for compression. The fields
- zalloc, zfree and opaque must be initialized before by the caller. If
- zalloc and zfree are set to Z_NULL, deflateInit updates them to use default
- allocation functions.
-
- The compression level must be Z_DEFAULT_COMPRESSION, or between 0 and 9:
- 1 gives best speed, 9 gives best compression, 0 gives no compression at all
- (the input data is simply copied a block at a time). Z_DEFAULT_COMPRESSION
- requests a default compromise between speed and compression (currently
- equivalent to level 6).
-
- deflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_STREAM_ERROR if level is not a valid compression level, or
- Z_VERSION_ERROR if the zlib library version (zlib_version) is incompatible
- with the version assumed by the caller (ZLIB_VERSION). msg is set to null
- if there is no error message. deflateInit does not perform any compression:
- this will be done by deflate().
-*/
-
-
-ZEXTERN int ZEXPORT deflate OF((z_streamp strm, int flush));
-/*
- deflate compresses as much data as possible, and stops when the input
- buffer becomes empty or the output buffer becomes full. It may introduce
- some output latency (reading input without producing any output) except when
- forced to flush.
-
- The detailed semantics are as follows. deflate performs one or both of the
- following actions:
-
- - Compress more input starting at next_in and update next_in and avail_in
- accordingly. If not all input can be processed (because there is not
- enough room in the output buffer), next_in and avail_in are updated and
- processing will resume at this point for the next call of deflate().
-
- - Provide more output starting at next_out and update next_out and avail_out
- accordingly. This action is forced if the parameter flush is non zero.
- Forcing flush frequently degrades the compression ratio, so this parameter
- should be set only when necessary (in interactive applications). Some
- output may be provided even if flush is not set.
-
- Before the call of deflate(), the application should ensure that at least
- one of the actions is possible, by providing more input and/or consuming more
- output, and updating avail_in or avail_out accordingly; avail_out should
- never be zero before the call. The application can consume the compressed
- output when it wants, for example when the output buffer is full (avail_out
- == 0), or after each call of deflate(). If deflate returns Z_OK and with
- zero avail_out, it must be called again after making room in the output
- buffer because there might be more output pending.
-
- Normally the parameter flush is set to Z_NO_FLUSH, which allows deflate to
- decide how much data to accumulate before producing output, in order to
- maximize compression.
-
- If the parameter flush is set to Z_SYNC_FLUSH, all pending output is
- flushed to the output buffer and the output is aligned on a byte boundary, so
- that the decompressor can get all input data available so far. (In
- particular avail_in is zero after the call if enough output space has been
- provided before the call.) Flushing may degrade compression for some
- compression algorithms and so it should be used only when necessary. This
- completes the current deflate block and follows it with an empty stored block
- that is three bits plus filler bits to the next byte, followed by four bytes
- (00 00 ff ff).
-
- If flush is set to Z_PARTIAL_FLUSH, all pending output is flushed to the
- output buffer, but the output is not aligned to a byte boundary. All of the
- input data so far will be available to the decompressor, as for Z_SYNC_FLUSH.
- This completes the current deflate block and follows it with an empty fixed
- codes block that is 10 bits long. This assures that enough bytes are output
- in order for the decompressor to finish the block before the empty fixed code
- block.
-
- If flush is set to Z_BLOCK, a deflate block is completed and emitted, as
- for Z_SYNC_FLUSH, but the output is not aligned on a byte boundary, and up to
- seven bits of the current block are held to be written as the next byte after
- the next deflate block is completed. In this case, the decompressor may not
- be provided enough bits at this point in order to complete decompression of
- the data provided so far to the compressor. It may need to wait for the next
- block to be emitted. This is for advanced applications that need to control
- the emission of deflate blocks.
-
- If flush is set to Z_FULL_FLUSH, all output is flushed as with
- Z_SYNC_FLUSH, and the compression state is reset so that decompression can
- restart from this point if previous compressed data has been damaged or if
- random access is desired. Using Z_FULL_FLUSH too often can seriously degrade
- compression.
-
- If deflate returns with avail_out == 0, this function must be called again
- with the same value of the flush parameter and more output space (updated
- avail_out), until the flush is complete (deflate returns with non-zero
- avail_out). In the case of a Z_FULL_FLUSH or Z_SYNC_FLUSH, make sure that
- avail_out is greater than six to avoid repeated flush markers due to
- avail_out == 0 on return.
-
- If the parameter flush is set to Z_FINISH, pending input is processed,
- pending output is flushed and deflate returns with Z_STREAM_END if there was
- enough output space; if deflate returns with Z_OK, this function must be
- called again with Z_FINISH and more output space (updated avail_out) but no
- more input data, until it returns with Z_STREAM_END or an error. After
- deflate has returned Z_STREAM_END, the only possible operations on the stream
- are deflateReset or deflateEnd.
-
- Z_FINISH can be used immediately after deflateInit if all the compression
- is to be done in a single step. In this case, avail_out must be at least the
- value returned by deflateBound (see below). Then deflate is guaranteed to
- return Z_STREAM_END. If not enough output space is provided, deflate will
- not return Z_STREAM_END, and it must be called again as described above.
-
- deflate() sets strm->adler to the adler32 checksum of all input read
- so far (that is, total_in bytes).
-
- deflate() may update strm->data_type if it can make a good guess about
- the input data type (Z_BINARY or Z_TEXT). In doubt, the data is considered
- binary. This field is only for information purposes and does not affect the
- compression algorithm in any manner.
-
- deflate() returns Z_OK if some progress has been made (more input
- processed or more output produced), Z_STREAM_END if all input has been
- consumed and all output has been produced (only when flush is set to
- Z_FINISH), Z_STREAM_ERROR if the stream state was inconsistent (for example
- if next_in or next_out was Z_NULL), Z_BUF_ERROR if no progress is possible
- (for example avail_in or avail_out was zero). Note that Z_BUF_ERROR is not
- fatal, and deflate() can be called again with more input and more output
- space to continue compressing.
-*/
-
-
-ZEXTERN int ZEXPORT deflateEnd OF((z_streamp strm));
-/*
- All dynamically allocated data structures for this stream are freed.
- This function discards any unprocessed input and does not flush any pending
- output.
-
- deflateEnd returns Z_OK if success, Z_STREAM_ERROR if the
- stream state was inconsistent, Z_DATA_ERROR if the stream was freed
- prematurely (some input or output was discarded). In the error case, msg
- may be set but then points to a static string (which must not be
- deallocated).
-*/
-
-
-/*
-ZEXTERN int ZEXPORT inflateInit OF((z_streamp strm));
-
- Initializes the internal stream state for decompression. The fields
- next_in, avail_in, zalloc, zfree and opaque must be initialized before by
- the caller. If next_in is not Z_NULL and avail_in is large enough (the
- exact value depends on the compression method), inflateInit determines the
- compression method from the zlib header and allocates all data structures
- accordingly; otherwise the allocation will be deferred to the first call of
- inflate. If zalloc and zfree are set to Z_NULL, inflateInit updates them to
- use default allocation functions.
-
- inflateInit returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
- version assumed by the caller, or Z_STREAM_ERROR if the parameters are
- invalid, such as a null pointer to the structure. msg is set to null if
- there is no error message. inflateInit does not perform any decompression
- apart from possibly reading the zlib header if present: actual decompression
- will be done by inflate(). (So next_in and avail_in may be modified, but
- next_out and avail_out are unused and unchanged.) The current implementation
- of inflateInit() does not process any header information -- that is deferred
- until inflate() is called.
-*/
-
-
-ZEXTERN int ZEXPORT inflate OF((z_streamp strm, int flush));
-/*
- inflate decompresses as much data as possible, and stops when the input
- buffer becomes empty or the output buffer becomes full. It may introduce
- some output latency (reading input without producing any output) except when
- forced to flush.
-
- The detailed semantics are as follows. inflate performs one or both of the
- following actions:
-
- - Decompress more input starting at next_in and update next_in and avail_in
- accordingly. If not all input can be processed (because there is not
- enough room in the output buffer), next_in is updated and processing will
- resume at this point for the next call of inflate().
-
- - Provide more output starting at next_out and update next_out and avail_out
- accordingly. inflate() provides as much output as possible, until there is
- no more input data or no more space in the output buffer (see below about
- the flush parameter).
-
- Before the call of inflate(), the application should ensure that at least
- one of the actions is possible, by providing more input and/or consuming more
- output, and updating the next_* and avail_* values accordingly. The
- application can consume the uncompressed output when it wants, for example
- when the output buffer is full (avail_out == 0), or after each call of
- inflate(). If inflate returns Z_OK and with zero avail_out, it must be
- called again after making room in the output buffer because there might be
- more output pending.
-
- The flush parameter of inflate() can be Z_NO_FLUSH, Z_SYNC_FLUSH, Z_FINISH,
- Z_BLOCK, or Z_TREES. Z_SYNC_FLUSH requests that inflate() flush as much
- output as possible to the output buffer. Z_BLOCK requests that inflate()
- stop if and when it gets to the next deflate block boundary. When decoding
- the zlib or gzip format, this will cause inflate() to return immediately
- after the header and before the first block. When doing a raw inflate,
- inflate() will go ahead and process the first block, and will return when it
- gets to the end of that block, or when it runs out of data.
-
- The Z_BLOCK option assists in appending to or combining deflate streams.
- Also to assist in this, on return inflate() will set strm->data_type to the
- number of unused bits in the last byte taken from strm->next_in, plus 64 if
- inflate() is currently decoding the last block in the deflate stream, plus
- 128 if inflate() returned immediately after decoding an end-of-block code or
- decoding the complete header up to just before the first byte of the deflate
- stream. The end-of-block will not be indicated until all of the uncompressed
- data from that block has been written to strm->next_out. The number of
- unused bits may in general be greater than seven, except when bit 7 of
- data_type is set, in which case the number of unused bits will be less than
- eight. data_type is set as noted here every time inflate() returns for all
- flush options, and so can be used to determine the amount of currently
- consumed input in bits.
-
- The Z_TREES option behaves as Z_BLOCK does, but it also returns when the
- end of each deflate block header is reached, before any actual data in that
- block is decoded. This allows the caller to determine the length of the
- deflate block header for later use in random access within a deflate block.
- 256 is added to the value of strm->data_type when inflate() returns
- immediately after reaching the end of the deflate block header.
-
- inflate() should normally be called until it returns Z_STREAM_END or an
- error. However if all decompression is to be performed in a single step (a
- single call of inflate), the parameter flush should be set to Z_FINISH. In
- this case all pending input is processed and all pending output is flushed;
- avail_out must be large enough to hold all of the uncompressed data for the
- operation to complete. (The size of the uncompressed data may have been
- saved by the compressor for this purpose.) The use of Z_FINISH is not
- required to perform an inflation in one step. However it may be used to
- inform inflate that a faster approach can be used for the single inflate()
- call. Z_FINISH also informs inflate to not maintain a sliding window if the
- stream completes, which reduces inflate's memory footprint. If the stream
- does not complete, either because not all of the stream is provided or not
- enough output space is provided, then a sliding window will be allocated and
- inflate() can be called again to continue the operation as if Z_NO_FLUSH had
- been used.
-
- In this implementation, inflate() always flushes as much output as
- possible to the output buffer, and always uses the faster approach on the
- first call. So the effects of the flush parameter in this implementation are
- on the return value of inflate() as noted below, when inflate() returns early
- when Z_BLOCK or Z_TREES is used, and when inflate() avoids the allocation of
- memory for a sliding window when Z_FINISH is used.
-
- If a preset dictionary is needed after this call (see inflateSetDictionary
- below), inflate sets strm->adler to the Adler-32 checksum of the dictionary
- chosen by the compressor and returns Z_NEED_DICT; otherwise it sets
- strm->adler to the Adler-32 checksum of all output produced so far (that is,
- total_out bytes) and returns Z_OK, Z_STREAM_END or an error code as described
- below. At the end of the stream, inflate() checks that its computed adler32
- checksum is equal to that saved by the compressor and returns Z_STREAM_END
- only if the checksum is correct.
-
- inflate() can decompress and check either zlib-wrapped or gzip-wrapped
- deflate data. The header type is detected automatically, if requested when
- initializing with inflateInit2(). Any information contained in the gzip
- header is not retained, so applications that need that information should
- instead use raw inflate, see inflateInit2() below, or inflateBack() and
- perform their own processing of the gzip header and trailer. When processing
- gzip-wrapped deflate data, strm->adler32 is set to the CRC-32 of the output
- producted so far. The CRC-32 is checked against the gzip trailer.
-
- inflate() returns Z_OK if some progress has been made (more input processed
- or more output produced), Z_STREAM_END if the end of the compressed data has
- been reached and all uncompressed output has been produced, Z_NEED_DICT if a
- preset dictionary is needed at this point, Z_DATA_ERROR if the input data was
- corrupted (input stream not conforming to the zlib format or incorrect check
- value), Z_STREAM_ERROR if the stream structure was inconsistent (for example
- next_in or next_out was Z_NULL), Z_MEM_ERROR if there was not enough memory,
- Z_BUF_ERROR if no progress is possible or if there was not enough room in the
- output buffer when Z_FINISH is used. Note that Z_BUF_ERROR is not fatal, and
- inflate() can be called again with more input and more output space to
- continue decompressing. If Z_DATA_ERROR is returned, the application may
- then call inflateSync() to look for a good compression block if a partial
- recovery of the data is desired.
-*/
-
-
-ZEXTERN int ZEXPORT inflateEnd OF((z_streamp strm));
-/*
- All dynamically allocated data structures for this stream are freed.
- This function discards any unprocessed input and does not flush any pending
- output.
-
- inflateEnd returns Z_OK if success, Z_STREAM_ERROR if the stream state
- was inconsistent. In the error case, msg may be set but then points to a
- static string (which must not be deallocated).
-*/
-
-
- /* Advanced functions */
-
-/*
- The following functions are needed only in some special applications.
-*/
-
-/*
-ZEXTERN int ZEXPORT deflateInit2 OF((z_streamp strm,
- int level,
- int method,
- int windowBits,
- int memLevel,
- int strategy));
-
- This is another version of deflateInit with more compression options. The
- fields next_in, zalloc, zfree and opaque must be initialized before by the
- caller.
-
- The method parameter is the compression method. It must be Z_DEFLATED in
- this version of the library.
-
- The windowBits parameter is the base two logarithm of the window size
- (the size of the history buffer). It should be in the range 8..15 for this
- version of the library. Larger values of this parameter result in better
- compression at the expense of memory usage. The default value is 15 if
- deflateInit is used instead.
-
- windowBits can also be -8..-15 for raw deflate. In this case, -windowBits
- determines the window size. deflate() will then generate raw deflate data
- with no zlib header or trailer, and will not compute an adler32 check value.
-
- windowBits can also be greater than 15 for optional gzip encoding. Add
- 16 to windowBits to write a simple gzip header and trailer around the
- compressed data instead of a zlib wrapper. The gzip header will have no
- file name, no extra data, no comment, no modification time (set to zero), no
- header crc, and the operating system will be set to 255 (unknown). If a
- gzip stream is being written, strm->adler is a crc32 instead of an adler32.
-
- The memLevel parameter specifies how much memory should be allocated
- for the internal compression state. memLevel=1 uses minimum memory but is
- slow and reduces compression ratio; memLevel=9 uses maximum memory for
- optimal speed. The default value is 8. See zconf.h for total memory usage
- as a function of windowBits and memLevel.
-
- The strategy parameter is used to tune the compression algorithm. Use the
- value Z_DEFAULT_STRATEGY for normal data, Z_FILTERED for data produced by a
- filter (or predictor), Z_HUFFMAN_ONLY to force Huffman encoding only (no
- string match), or Z_RLE to limit match distances to one (run-length
- encoding). Filtered data consists mostly of small values with a somewhat
- random distribution. In this case, the compression algorithm is tuned to
- compress them better. The effect of Z_FILTERED is to force more Huffman
- coding and less string matching; it is somewhat intermediate between
- Z_DEFAULT_STRATEGY and Z_HUFFMAN_ONLY. Z_RLE is designed to be almost as
- fast as Z_HUFFMAN_ONLY, but give better compression for PNG image data. The
- strategy parameter only affects the compression ratio but not the
- correctness of the compressed output even if it is not set appropriately.
- Z_FIXED prevents the use of dynamic Huffman codes, allowing for a simpler
- decoder for special applications.
-
- deflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_STREAM_ERROR if any parameter is invalid (such as an invalid
- method), or Z_VERSION_ERROR if the zlib library version (zlib_version) is
- incompatible with the version assumed by the caller (ZLIB_VERSION). msg is
- set to null if there is no error message. deflateInit2 does not perform any
- compression: this will be done by deflate().
-*/
-
-ZEXTERN int ZEXPORT deflateSetDictionary OF((z_streamp strm,
- const Bytef *dictionary,
- uInt dictLength));
-/*
- Initializes the compression dictionary from the given byte sequence
- without producing any compressed output. When using the zlib format, this
- function must be called immediately after deflateInit, deflateInit2 or
- deflateReset, and before any call of deflate. When doing raw deflate, this
- function must be called either before any call of deflate, or immediately
- after the completion of a deflate block, i.e. after all input has been
- consumed and all output has been delivered when using any of the flush
- options Z_BLOCK, Z_PARTIAL_FLUSH, Z_SYNC_FLUSH, or Z_FULL_FLUSH. The
- compressor and decompressor must use exactly the same dictionary (see
- inflateSetDictionary).
-
- The dictionary should consist of strings (byte sequences) that are likely
- to be encountered later in the data to be compressed, with the most commonly
- used strings preferably put towards the end of the dictionary. Using a
- dictionary is most useful when the data to be compressed is short and can be
- predicted with good accuracy; the data can then be compressed better than
- with the default empty dictionary.
-
- Depending on the size of the compression data structures selected by
- deflateInit or deflateInit2, a part of the dictionary may in effect be
- discarded, for example if the dictionary is larger than the window size
- provided in deflateInit or deflateInit2. Thus the strings most likely to be
- useful should be put at the end of the dictionary, not at the front. In
- addition, the current implementation of deflate will use at most the window
- size minus 262 bytes of the provided dictionary.
-
- Upon return of this function, strm->adler is set to the adler32 value
- of the dictionary; the decompressor may later use this value to determine
- which dictionary has been used by the compressor. (The adler32 value
- applies to the whole dictionary even if only a subset of the dictionary is
- actually used by the compressor.) If a raw deflate was requested, then the
- adler32 value is not computed and strm->adler is not set.
-
- deflateSetDictionary returns Z_OK if success, or Z_STREAM_ERROR if a
- parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is
- inconsistent (for example if deflate has already been called for this stream
- or if not at a block boundary for raw deflate). deflateSetDictionary does
- not perform any compression: this will be done by deflate().
-*/
-
-ZEXTERN int ZEXPORT deflateCopy OF((z_streamp dest,
- z_streamp source));
-/*
- Sets the destination stream as a complete copy of the source stream.
-
- This function can be useful when several compression strategies will be
- tried, for example when there are several ways of pre-processing the input
- data with a filter. The streams that will be discarded should then be freed
- by calling deflateEnd. Note that deflateCopy duplicates the internal
- compression state which can be quite large, so this strategy is slow and can
- consume lots of memory.
-
- deflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
- (such as zalloc being Z_NULL). msg is left unchanged in both source and
- destination.
-*/
-
-ZEXTERN int ZEXPORT deflateReset OF((z_streamp strm));
-/*
- This function is equivalent to deflateEnd followed by deflateInit,
- but does not free and reallocate all the internal compression state. The
- stream will keep the same compression level and any other attributes that
- may have been set by deflateInit2.
-
- deflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent (such as zalloc or state being Z_NULL).
-*/
-
-ZEXTERN int ZEXPORT deflateParams OF((z_streamp strm,
- int level,
- int strategy));
-/*
- Dynamically update the compression level and compression strategy. The
- interpretation of level and strategy is as in deflateInit2. This can be
- used to switch between compression and straight copy of the input data, or
- to switch to a different kind of input data requiring a different strategy.
- If the compression level is changed, the input available so far is
- compressed with the old level (and may be flushed); the new level will take
- effect only at the next call of deflate().
-
- Before the call of deflateParams, the stream state must be set as for
- a call of deflate(), since the currently available input may have to be
- compressed and flushed. In particular, strm->avail_out must be non-zero.
-
- deflateParams returns Z_OK if success, Z_STREAM_ERROR if the source
- stream state was inconsistent or if a parameter was invalid, Z_BUF_ERROR if
- strm->avail_out was zero.
-*/
-
-ZEXTERN int ZEXPORT deflateTune OF((z_streamp strm,
- int good_length,
- int max_lazy,
- int nice_length,
- int max_chain));
-/*
- Fine tune deflate's internal compression parameters. This should only be
- used by someone who understands the algorithm used by zlib's deflate for
- searching for the best matching string, and even then only by the most
- fanatic optimizer trying to squeeze out the last compressed bit for their
- specific input data. Read the deflate.c source code for the meaning of the
- max_lazy, good_length, nice_length, and max_chain parameters.
-
- deflateTune() can be called after deflateInit() or deflateInit2(), and
- returns Z_OK on success, or Z_STREAM_ERROR for an invalid deflate stream.
- */
-
-ZEXTERN uLong ZEXPORT deflateBound OF((z_streamp strm,
- uLong sourceLen));
-/*
- deflateBound() returns an upper bound on the compressed size after
- deflation of sourceLen bytes. It must be called after deflateInit() or
- deflateInit2(), and after deflateSetHeader(), if used. This would be used
- to allocate an output buffer for deflation in a single pass, and so would be
- called before deflate(). If that first deflate() call is provided the
- sourceLen input bytes, an output buffer allocated to the size returned by
- deflateBound(), and the flush value Z_FINISH, then deflate() is guaranteed
- to return Z_STREAM_END. Note that it is possible for the compressed size to
- be larger than the value returned by deflateBound() if flush options other
- than Z_FINISH or Z_NO_FLUSH are used.
-*/
-
-ZEXTERN int ZEXPORT deflatePending OF((z_streamp strm,
- unsigned *pending,
- int *bits));
-/*
- deflatePending() returns the number of bytes and bits of output that have
- been generated, but not yet provided in the available output. The bytes not
- provided would be due to the available output space having being consumed.
- The number of bits of output not provided are between 0 and 7, where they
- await more bits to join them in order to fill out a full byte. If pending
- or bits are Z_NULL, then those values are not set.
-
- deflatePending returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
- */
-
-ZEXTERN int ZEXPORT deflatePrime OF((z_streamp strm,
- int bits,
- int value));
-/*
- deflatePrime() inserts bits in the deflate output stream. The intent
- is that this function is used to start off the deflate output with the bits
- leftover from a previous deflate stream when appending to it. As such, this
- function can only be used for raw deflate, and must be used before the first
- deflate() call after a deflateInit2() or deflateReset(). bits must be less
- than or equal to 16, and that many of the least significant bits of value
- will be inserted in the output.
-
- deflatePrime returns Z_OK if success, Z_BUF_ERROR if there was not enough
- room in the internal buffer to insert the bits, or Z_STREAM_ERROR if the
- source stream state was inconsistent.
-*/
-
-ZEXTERN int ZEXPORT deflateSetHeader OF((z_streamp strm,
- gz_headerp head));
-/*
- deflateSetHeader() provides gzip header information for when a gzip
- stream is requested by deflateInit2(). deflateSetHeader() may be called
- after deflateInit2() or deflateReset() and before the first call of
- deflate(). The text, time, os, extra field, name, and comment information
- in the provided gz_header structure are written to the gzip header (xflag is
- ignored -- the extra flags are set according to the compression level). The
- caller must assure that, if not Z_NULL, name and comment are terminated with
- a zero byte, and that if extra is not Z_NULL, that extra_len bytes are
- available there. If hcrc is true, a gzip header crc is included. Note that
- the current versions of the command-line version of gzip (up through version
- 1.3.x) do not support header crc's, and will report that it is a "multi-part
- gzip file" and give up.
-
- If deflateSetHeader is not used, the default gzip header has text false,
- the time set to zero, and os set to 255, with no extra, name, or comment
- fields. The gzip header is returned to the default state by deflateReset().
-
- deflateSetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-/*
-ZEXTERN int ZEXPORT inflateInit2 OF((z_streamp strm,
- int windowBits));
-
- This is another version of inflateInit with an extra parameter. The
- fields next_in, avail_in, zalloc, zfree and opaque must be initialized
- before by the caller.
-
- The windowBits parameter is the base two logarithm of the maximum window
- size (the size of the history buffer). It should be in the range 8..15 for
- this version of the library. The default value is 15 if inflateInit is used
- instead. windowBits must be greater than or equal to the windowBits value
- provided to deflateInit2() while compressing, or it must be equal to 15 if
- deflateInit2() was not used. If a compressed stream with a larger window
- size is given as input, inflate() will return with the error code
- Z_DATA_ERROR instead of trying to allocate a larger window.
-
- windowBits can also be zero to request that inflate use the window size in
- the zlib header of the compressed stream.
-
- windowBits can also be -8..-15 for raw inflate. In this case, -windowBits
- determines the window size. inflate() will then process raw deflate data,
- not looking for a zlib or gzip header, not generating a check value, and not
- looking for any check values for comparison at the end of the stream. This
- is for use with other formats that use the deflate compressed data format
- such as zip. Those formats provide their own check values. If a custom
- format is developed using the raw deflate format for compressed data, it is
- recommended that a check value such as an adler32 or a crc32 be applied to
- the uncompressed data as is done in the zlib, gzip, and zip formats. For
- most applications, the zlib format should be used as is. Note that comments
- above on the use in deflateInit2() applies to the magnitude of windowBits.
-
- windowBits can also be greater than 15 for optional gzip decoding. Add
- 32 to windowBits to enable zlib and gzip decoding with automatic header
- detection, or add 16 to decode only the gzip format (the zlib format will
- return a Z_DATA_ERROR). If a gzip stream is being decoded, strm->adler is a
- crc32 instead of an adler32.
-
- inflateInit2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_VERSION_ERROR if the zlib library version is incompatible with the
- version assumed by the caller, or Z_STREAM_ERROR if the parameters are
- invalid, such as a null pointer to the structure. msg is set to null if
- there is no error message. inflateInit2 does not perform any decompression
- apart from possibly reading the zlib header if present: actual decompression
- will be done by inflate(). (So next_in and avail_in may be modified, but
- next_out and avail_out are unused and unchanged.) The current implementation
- of inflateInit2() does not process any header information -- that is
- deferred until inflate() is called.
-*/
-
-ZEXTERN int ZEXPORT inflateSetDictionary OF((z_streamp strm,
- const Bytef *dictionary,
- uInt dictLength));
-/*
- Initializes the decompression dictionary from the given uncompressed byte
- sequence. This function must be called immediately after a call of inflate,
- if that call returned Z_NEED_DICT. The dictionary chosen by the compressor
- can be determined from the adler32 value returned by that call of inflate.
- The compressor and decompressor must use exactly the same dictionary (see
- deflateSetDictionary). For raw inflate, this function can be called at any
- time to set the dictionary. If the provided dictionary is smaller than the
- window and there is already data in the window, then the provided dictionary
- will amend what's there. The application must insure that the dictionary
- that was used for compression is provided.
-
- inflateSetDictionary returns Z_OK if success, Z_STREAM_ERROR if a
- parameter is invalid (e.g. dictionary being Z_NULL) or the stream state is
- inconsistent, Z_DATA_ERROR if the given dictionary doesn't match the
- expected one (incorrect adler32 value). inflateSetDictionary does not
- perform any decompression: this will be done by subsequent calls of
- inflate().
-*/
-
-ZEXTERN int ZEXPORT inflateGetDictionary OF((z_streamp strm,
- Bytef *dictionary,
- uInt *dictLength));
-/*
- Returns the sliding dictionary being maintained by inflate. dictLength is
- set to the number of bytes in the dictionary, and that many bytes are copied
- to dictionary. dictionary must have enough space, where 32768 bytes is
- always enough. If inflateGetDictionary() is called with dictionary equal to
- Z_NULL, then only the dictionary length is returned, and nothing is copied.
- Similary, if dictLength is Z_NULL, then it is not set.
-
- inflateGetDictionary returns Z_OK on success, or Z_STREAM_ERROR if the
- stream state is inconsistent.
-*/
-
-ZEXTERN int ZEXPORT inflateSync OF((z_streamp strm));
-/*
- Skips invalid compressed data until a possible full flush point (see above
- for the description of deflate with Z_FULL_FLUSH) can be found, or until all
- available input is skipped. No output is provided.
-
- inflateSync searches for a 00 00 FF FF pattern in the compressed data.
- All full flush points have this pattern, but not all occurrences of this
- pattern are full flush points.
-
- inflateSync returns Z_OK if a possible full flush point has been found,
- Z_BUF_ERROR if no more input was provided, Z_DATA_ERROR if no flush point
- has been found, or Z_STREAM_ERROR if the stream structure was inconsistent.
- In the success case, the application may save the current current value of
- total_in which indicates where valid compressed data was found. In the
- error case, the application may repeatedly call inflateSync, providing more
- input each time, until success or end of the input data.
-*/
-
-ZEXTERN int ZEXPORT inflateCopy OF((z_streamp dest,
- z_streamp source));
-/*
- Sets the destination stream as a complete copy of the source stream.
-
- This function can be useful when randomly accessing a large stream. The
- first pass through the stream can periodically record the inflate state,
- allowing restarting inflate at those points when randomly accessing the
- stream.
-
- inflateCopy returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_STREAM_ERROR if the source stream state was inconsistent
- (such as zalloc being Z_NULL). msg is left unchanged in both source and
- destination.
-*/
-
-ZEXTERN int ZEXPORT inflateReset OF((z_streamp strm));
-/*
- This function is equivalent to inflateEnd followed by inflateInit,
- but does not free and reallocate all the internal decompression state. The
- stream will keep attributes that may have been set by inflateInit2.
-
- inflateReset returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent (such as zalloc or state being Z_NULL).
-*/
-
-ZEXTERN int ZEXPORT inflateReset2 OF((z_streamp strm,
- int windowBits));
-/*
- This function is the same as inflateReset, but it also permits changing
- the wrap and window size requests. The windowBits parameter is interpreted
- the same as it is for inflateInit2.
-
- inflateReset2 returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent (such as zalloc or state being Z_NULL), or if
- the windowBits parameter is invalid.
-*/
-
-ZEXTERN int ZEXPORT inflatePrime OF((z_streamp strm,
- int bits,
- int value));
-/*
- This function inserts bits in the inflate input stream. The intent is
- that this function is used to start inflating at a bit position in the
- middle of a byte. The provided bits will be used before any bytes are used
- from next_in. This function should only be used with raw inflate, and
- should be used before the first inflate() call after inflateInit2() or
- inflateReset(). bits must be less than or equal to 16, and that many of the
- least significant bits of value will be inserted in the input.
-
- If bits is negative, then the input stream bit buffer is emptied. Then
- inflatePrime() can be called again to put bits in the buffer. This is used
- to clear out bits leftover after feeding inflate a block description prior
- to feeding inflate codes.
-
- inflatePrime returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-ZEXTERN long ZEXPORT inflateMark OF((z_streamp strm));
-/*
- This function returns two values, one in the lower 16 bits of the return
- value, and the other in the remaining upper bits, obtained by shifting the
- return value down 16 bits. If the upper value is -1 and the lower value is
- zero, then inflate() is currently decoding information outside of a block.
- If the upper value is -1 and the lower value is non-zero, then inflate is in
- the middle of a stored block, with the lower value equaling the number of
- bytes from the input remaining to copy. If the upper value is not -1, then
- it is the number of bits back from the current bit position in the input of
- the code (literal or length/distance pair) currently being processed. In
- that case the lower value is the number of bytes already emitted for that
- code.
-
- A code is being processed if inflate is waiting for more input to complete
- decoding of the code, or if it has completed decoding but is waiting for
- more output space to write the literal or match data.
-
- inflateMark() is used to mark locations in the input data for random
- access, which may be at bit positions, and to note those cases where the
- output of a code may span boundaries of random access blocks. The current
- location in the input stream can be determined from avail_in and data_type
- as noted in the description for the Z_BLOCK flush parameter for inflate.
-
- inflateMark returns the value noted above or -1 << 16 if the provided
- source stream state was inconsistent.
-*/
-
-ZEXTERN int ZEXPORT inflateGetHeader OF((z_streamp strm,
- gz_headerp head));
-/*
- inflateGetHeader() requests that gzip header information be stored in the
- provided gz_header structure. inflateGetHeader() may be called after
- inflateInit2() or inflateReset(), and before the first call of inflate().
- As inflate() processes the gzip stream, head->done is zero until the header
- is completed, at which time head->done is set to one. If a zlib stream is
- being decoded, then head->done is set to -1 to indicate that there will be
- no gzip header information forthcoming. Note that Z_BLOCK or Z_TREES can be
- used to force inflate() to return immediately after header processing is
- complete and before any actual data is decompressed.
-
- The text, time, xflags, and os fields are filled in with the gzip header
- contents. hcrc is set to true if there is a header CRC. (The header CRC
- was valid if done is set to one.) If extra is not Z_NULL, then extra_max
- contains the maximum number of bytes to write to extra. Once done is true,
- extra_len contains the actual extra field length, and extra contains the
- extra field, or that field truncated if extra_max is less than extra_len.
- If name is not Z_NULL, then up to name_max characters are written there,
- terminated with a zero unless the length is greater than name_max. If
- comment is not Z_NULL, then up to comm_max characters are written there,
- terminated with a zero unless the length is greater than comm_max. When any
- of extra, name, or comment are not Z_NULL and the respective field is not
- present in the header, then that field is set to Z_NULL to signal its
- absence. This allows the use of deflateSetHeader() with the returned
- structure to duplicate the header. However if those fields are set to
- allocated memory, then the application will need to save those pointers
- elsewhere so that they can be eventually freed.
-
- If inflateGetHeader is not used, then the header information is simply
- discarded. The header is always checked for validity, including the header
- CRC if present. inflateReset() will reset the process to discard the header
- information. The application would need to call inflateGetHeader() again to
- retrieve the header from the next gzip stream.
-
- inflateGetHeader returns Z_OK if success, or Z_STREAM_ERROR if the source
- stream state was inconsistent.
-*/
-
-/*
-ZEXTERN int ZEXPORT inflateBackInit OF((z_streamp strm, int windowBits,
- unsigned char FAR *window));
-
- Initialize the internal stream state for decompression using inflateBack()
- calls. The fields zalloc, zfree and opaque in strm must be initialized
- before the call. If zalloc and zfree are Z_NULL, then the default library-
- derived memory allocation routines are used. windowBits is the base two
- logarithm of the window size, in the range 8..15. window is a caller
- supplied buffer of that size. Except for special applications where it is
- assured that deflate was used with small window sizes, windowBits must be 15
- and a 32K byte window must be supplied to be able to decompress general
- deflate streams.
-
- See inflateBack() for the usage of these routines.
-
- inflateBackInit will return Z_OK on success, Z_STREAM_ERROR if any of
- the parameters are invalid, Z_MEM_ERROR if the internal state could not be
- allocated, or Z_VERSION_ERROR if the version of the library does not match
- the version of the header file.
-*/
-
-typedef unsigned (*in_func) OF((void FAR *,
- z_const unsigned char FAR * FAR *));
-typedef int (*out_func) OF((void FAR *, unsigned char FAR *, unsigned));
-
-ZEXTERN int ZEXPORT inflateBack OF((z_streamp strm,
- in_func in, void FAR *in_desc,
- out_func out, void FAR *out_desc));
-/*
- inflateBack() does a raw inflate with a single call using a call-back
- interface for input and output. This is potentially more efficient than
- inflate() for file i/o applications, in that it avoids copying between the
- output and the sliding window by simply making the window itself the output
- buffer. inflate() can be faster on modern CPUs when used with large
- buffers. inflateBack() trusts the application to not change the output
- buffer passed by the output function, at least until inflateBack() returns.
-
- inflateBackInit() must be called first to allocate the internal state
- and to initialize the state with the user-provided window buffer.
- inflateBack() may then be used multiple times to inflate a complete, raw
- deflate stream with each call. inflateBackEnd() is then called to free the
- allocated state.
-
- A raw deflate stream is one with no zlib or gzip header or trailer.
- This routine would normally be used in a utility that reads zip or gzip
- files and writes out uncompressed files. The utility would decode the
- header and process the trailer on its own, hence this routine expects only
- the raw deflate stream to decompress. This is different from the normal
- behavior of inflate(), which expects either a zlib or gzip header and
- trailer around the deflate stream.
-
- inflateBack() uses two subroutines supplied by the caller that are then
- called by inflateBack() for input and output. inflateBack() calls those
- routines until it reads a complete deflate stream and writes out all of the
- uncompressed data, or until it encounters an error. The function's
- parameters and return types are defined above in the in_func and out_func
- typedefs. inflateBack() will call in(in_desc, &buf) which should return the
- number of bytes of provided input, and a pointer to that input in buf. If
- there is no input available, in() must return zero--buf is ignored in that
- case--and inflateBack() will return a buffer error. inflateBack() will call
- out(out_desc, buf, len) to write the uncompressed data buf[0..len-1]. out()
- should return zero on success, or non-zero on failure. If out() returns
- non-zero, inflateBack() will return with an error. Neither in() nor out()
- are permitted to change the contents of the window provided to
- inflateBackInit(), which is also the buffer that out() uses to write from.
- The length written by out() will be at most the window size. Any non-zero
- amount of input may be provided by in().
-
- For convenience, inflateBack() can be provided input on the first call by
- setting strm->next_in and strm->avail_in. If that input is exhausted, then
- in() will be called. Therefore strm->next_in must be initialized before
- calling inflateBack(). If strm->next_in is Z_NULL, then in() will be called
- immediately for input. If strm->next_in is not Z_NULL, then strm->avail_in
- must also be initialized, and then if strm->avail_in is not zero, input will
- initially be taken from strm->next_in[0 .. strm->avail_in - 1].
-
- The in_desc and out_desc parameters of inflateBack() is passed as the
- first parameter of in() and out() respectively when they are called. These
- descriptors can be optionally used to pass any information that the caller-
- supplied in() and out() functions need to do their job.
-
- On return, inflateBack() will set strm->next_in and strm->avail_in to
- pass back any unused input that was provided by the last in() call. The
- return values of inflateBack() can be Z_STREAM_END on success, Z_BUF_ERROR
- if in() or out() returned an error, Z_DATA_ERROR if there was a format error
- in the deflate stream (in which case strm->msg is set to indicate the nature
- of the error), or Z_STREAM_ERROR if the stream was not properly initialized.
- In the case of Z_BUF_ERROR, an input or output error can be distinguished
- using strm->next_in which will be Z_NULL only if in() returned an error. If
- strm->next_in is not Z_NULL, then the Z_BUF_ERROR was due to out() returning
- non-zero. (in() will always be called before out(), so strm->next_in is
- assured to be defined if out() returns non-zero.) Note that inflateBack()
- cannot return Z_OK.
-*/
-
-ZEXTERN int ZEXPORT inflateBackEnd OF((z_streamp strm));
-/*
- All memory allocated by inflateBackInit() is freed.
-
- inflateBackEnd() returns Z_OK on success, or Z_STREAM_ERROR if the stream
- state was inconsistent.
-*/
-
-ZEXTERN uLong ZEXPORT zlibCompileFlags OF((void));
-/* Return flags indicating compile-time options.
-
- Type sizes, two bits each, 00 = 16 bits, 01 = 32, 10 = 64, 11 = other:
- 1.0: size of uInt
- 3.2: size of uLong
- 5.4: size of voidpf (pointer)
- 7.6: size of z_off_t
-
- Compiler, assembler, and debug options:
- 8: DEBUG
- 9: ASMV or ASMINF -- use ASM code
- 10: ZLIB_WINAPI -- exported functions use the WINAPI calling convention
- 11: 0 (reserved)
-
- One-time table building (smaller code, but not thread-safe if true):
- 12: BUILDFIXED -- build static block decoding tables when needed
- 13: DYNAMIC_CRC_TABLE -- build CRC calculation tables when needed
- 14,15: 0 (reserved)
-
- Library content (indicates missing functionality):
- 16: NO_GZCOMPRESS -- gz* functions cannot compress (to avoid linking
- deflate code when not needed)
- 17: NO_GZIP -- deflate can't write gzip streams, and inflate can't detect
- and decode gzip streams (to avoid linking crc code)
- 18-19: 0 (reserved)
-
- Operation variations (changes in library functionality):
- 20: PKZIP_BUG_WORKAROUND -- slightly more permissive inflate
- 21: FASTEST -- deflate algorithm with only one, lowest compression level
- 22,23: 0 (reserved)
-
- The sprintf variant used by gzprintf (zero is best):
- 24: 0 = vs*, 1 = s* -- 1 means limited to 20 arguments after the format
- 25: 0 = *nprintf, 1 = *printf -- 1 means gzprintf() not secure!
- 26: 0 = returns value, 1 = void -- 1 means inferred string length returned
-
- Remainder:
- 27-31: 0 (reserved)
- */
-
-#ifndef Z_SOLO
-
- /* utility functions */
-
-/*
- The following utility functions are implemented on top of the basic
- stream-oriented functions. To simplify the interface, some default options
- are assumed (compression level and memory usage, standard memory allocation
- functions). The source code of these utility functions can be modified if
- you need special options.
-*/
-
-ZEXTERN int ZEXPORT compress OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen));
-/*
- Compresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total size
- of the destination buffer, which must be at least the value returned by
- compressBound(sourceLen). Upon exit, destLen is the actual size of the
- compressed buffer.
-
- compress returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_BUF_ERROR if there was not enough room in the output
- buffer.
-*/
-
-ZEXTERN int ZEXPORT compress2 OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen,
- int level));
-/*
- Compresses the source buffer into the destination buffer. The level
- parameter has the same meaning as in deflateInit. sourceLen is the byte
- length of the source buffer. Upon entry, destLen is the total size of the
- destination buffer, which must be at least the value returned by
- compressBound(sourceLen). Upon exit, destLen is the actual size of the
- compressed buffer.
-
- compress2 returns Z_OK if success, Z_MEM_ERROR if there was not enough
- memory, Z_BUF_ERROR if there was not enough room in the output buffer,
- Z_STREAM_ERROR if the level parameter is invalid.
-*/
-
-ZEXTERN uLong ZEXPORT compressBound OF((uLong sourceLen));
-/*
- compressBound() returns an upper bound on the compressed size after
- compress() or compress2() on sourceLen bytes. It would be used before a
- compress() or compress2() call to allocate the destination buffer.
-*/
-
-ZEXTERN int ZEXPORT uncompress OF((Bytef *dest, uLongf *destLen,
- const Bytef *source, uLong sourceLen));
-/*
- Decompresses the source buffer into the destination buffer. sourceLen is
- the byte length of the source buffer. Upon entry, destLen is the total size
- of the destination buffer, which must be large enough to hold the entire
- uncompressed data. (The size of the uncompressed data must have been saved
- previously by the compressor and transmitted to the decompressor by some
- mechanism outside the scope of this compression library.) Upon exit, destLen
- is the actual size of the uncompressed buffer.
-
- uncompress returns Z_OK if success, Z_MEM_ERROR if there was not
- enough memory, Z_BUF_ERROR if there was not enough room in the output
- buffer, or Z_DATA_ERROR if the input data was corrupted or incomplete. In
- the case where there is not enough room, uncompress() will fill the output
- buffer with the uncompressed data up to that point.
-*/
-
- /* gzip file access functions */
-
-/*
- This library supports reading and writing files in gzip (.gz) format with
- an interface similar to that of stdio, using the functions that start with
- "gz". The gzip format is different from the zlib format. gzip is a gzip
- wrapper, documented in RFC 1952, wrapped around a deflate stream.
-*/
-
-typedef struct gzFile_s *gzFile; /* semi-opaque gzip file descriptor */
-
-/*
-ZEXTERN gzFile ZEXPORT gzopen OF((const char *path, const char *mode));
-
- Opens a gzip (.gz) file for reading or writing. The mode parameter is as
- in fopen ("rb" or "wb") but can also include a compression level ("wb9") or
- a strategy: 'f' for filtered data as in "wb6f", 'h' for Huffman-only
- compression as in "wb1h", 'R' for run-length encoding as in "wb1R", or 'F'
- for fixed code compression as in "wb9F". (See the description of
- deflateInit2 for more information about the strategy parameter.) 'T' will
- request transparent writing or appending with no compression and not using
- the gzip format.
-
- "a" can be used instead of "w" to request that the gzip stream that will
- be written be appended to the file. "+" will result in an error, since
- reading and writing to the same gzip file is not supported. The addition of
- "x" when writing will create the file exclusively, which fails if the file
- already exists. On systems that support it, the addition of "e" when
- reading or writing will set the flag to close the file on an execve() call.
-
- These functions, as well as gzip, will read and decode a sequence of gzip
- streams in a file. The append function of gzopen() can be used to create
- such a file. (Also see gzflush() for another way to do this.) When
- appending, gzopen does not test whether the file begins with a gzip stream,
- nor does it look for the end of the gzip streams to begin appending. gzopen
- will simply append a gzip stream to the existing file.
-
- gzopen can be used to read a file which is not in gzip format; in this
- case gzread will directly read from the file without decompression. When
- reading, this will be detected automatically by looking for the magic two-
- byte gzip header.
-
- gzopen returns NULL if the file could not be opened, if there was
- insufficient memory to allocate the gzFile state, or if an invalid mode was
- specified (an 'r', 'w', or 'a' was not provided, or '+' was provided).
- errno can be checked to determine if the reason gzopen failed was that the
- file could not be opened.
-*/
-
-ZEXTERN gzFile ZEXPORT gzdopen OF((int fd, const char *mode));
-/*
- gzdopen associates a gzFile with the file descriptor fd. File descriptors
- are obtained from calls like open, dup, creat, pipe or fileno (if the file
- has been previously opened with fopen). The mode parameter is as in gzopen.
-
- The next call of gzclose on the returned gzFile will also close the file
- descriptor fd, just like fclose(fdopen(fd, mode)) closes the file descriptor
- fd. If you want to keep fd open, use fd = dup(fd_keep); gz = gzdopen(fd,
- mode);. The duplicated descriptor should be saved to avoid a leak, since
- gzdopen does not close fd if it fails. If you are using fileno() to get the
- file descriptor from a FILE *, then you will have to use dup() to avoid
- double-close()ing the file descriptor. Both gzclose() and fclose() will
- close the associated file descriptor, so they need to have different file
- descriptors.
-
- gzdopen returns NULL if there was insufficient memory to allocate the
- gzFile state, if an invalid mode was specified (an 'r', 'w', or 'a' was not
- provided, or '+' was provided), or if fd is -1. The file descriptor is not
- used until the next gz* read, write, seek, or close operation, so gzdopen
- will not detect if fd is invalid (unless fd is -1).
-*/
-
-ZEXTERN int ZEXPORT gzbuffer OF((gzFile file, unsigned size));
-/*
- Set the internal buffer size used by this library's functions. The
- default buffer size is 8192 bytes. This function must be called after
- gzopen() or gzdopen(), and before any other calls that read or write the
- file. The buffer memory allocation is always deferred to the first read or
- write. Two buffers are allocated, either both of the specified size when
- writing, or one of the specified size and the other twice that size when
- reading. A larger buffer size of, for example, 64K or 128K bytes will
- noticeably increase the speed of decompression (reading).
-
- The new buffer size also affects the maximum length for gzprintf().
-
- gzbuffer() returns 0 on success, or -1 on failure, such as being called
- too late.
-*/
-
-ZEXTERN int ZEXPORT gzsetparams OF((gzFile file, int level, int strategy));
-/*
- Dynamically update the compression level or strategy. See the description
- of deflateInit2 for the meaning of these parameters.
-
- gzsetparams returns Z_OK if success, or Z_STREAM_ERROR if the file was not
- opened for writing.
-*/
-
-ZEXTERN int ZEXPORT gzread OF((gzFile file, voidp buf, unsigned len));
-/*
- Reads the given number of uncompressed bytes from the compressed file. If
- the input file is not in gzip format, gzread copies the given number of
- bytes into the buffer directly from the file.
-
- After reaching the end of a gzip stream in the input, gzread will continue
- to read, looking for another gzip stream. Any number of gzip streams may be
- concatenated in the input file, and will all be decompressed by gzread().
- If something other than a gzip stream is encountered after a gzip stream,
- that remaining trailing garbage is ignored (and no error is returned).
-
- gzread can be used to read a gzip file that is being concurrently written.
- Upon reaching the end of the input, gzread will return with the available
- data. If the error code returned by gzerror is Z_OK or Z_BUF_ERROR, then
- gzclearerr can be used to clear the end of file indicator in order to permit
- gzread to be tried again. Z_OK indicates that a gzip stream was completed
- on the last gzread. Z_BUF_ERROR indicates that the input file ended in the
- middle of a gzip stream. Note that gzread does not return -1 in the event
- of an incomplete gzip stream. This error is deferred until gzclose(), which
- will return Z_BUF_ERROR if the last gzread ended in the middle of a gzip
- stream. Alternatively, gzerror can be used before gzclose to detect this
- case.
-
- gzread returns the number of uncompressed bytes actually read, less than
- len for end of file, or -1 for error.
-*/
-
-ZEXTERN int ZEXPORT gzwrite OF((gzFile file,
- voidpc buf, unsigned len));
-/*
- Writes the given number of uncompressed bytes into the compressed file.
- gzwrite returns the number of uncompressed bytes written or 0 in case of
- error.
-*/
-
-ZEXTERN int ZEXPORTVA gzprintf Z_ARG((gzFile file, const char *format, ...));
-/*
- Converts, formats, and writes the arguments to the compressed file under
- control of the format string, as in fprintf. gzprintf returns the number of
- uncompressed bytes actually written, or 0 in case of error. The number of
- uncompressed bytes written is limited to 8191, or one less than the buffer
- size given to gzbuffer(). The caller should assure that this limit is not
- exceeded. If it is exceeded, then gzprintf() will return an error (0) with
- nothing written. In this case, there may also be a buffer overflow with
- unpredictable consequences, which is possible only if zlib was compiled with
- the insecure functions sprintf() or vsprintf() because the secure snprintf()
- or vsnprintf() functions were not available. This can be determined using
- zlibCompileFlags().
-*/
-
-ZEXTERN int ZEXPORT gzputs OF((gzFile file, const char *s));
-/*
- Writes the given null-terminated string to the compressed file, excluding
- the terminating null character.
-
- gzputs returns the number of characters written, or -1 in case of error.
-*/
-
-ZEXTERN char * ZEXPORT gzgets OF((gzFile file, char *buf, int len));
-/*
- Reads bytes from the compressed file until len-1 characters are read, or a
- newline character is read and transferred to buf, or an end-of-file
- condition is encountered. If any characters are read or if len == 1, the
- string is terminated with a null character. If no characters are read due
- to an end-of-file or len < 1, then the buffer is left untouched.
-
- gzgets returns buf which is a null-terminated string, or it returns NULL
- for end-of-file or in case of error. If there was an error, the contents at
- buf are indeterminate.
-*/
-
-ZEXTERN int ZEXPORT gzputc OF((gzFile file, int c));
-/*
- Writes c, converted to an unsigned char, into the compressed file. gzputc
- returns the value that was written, or -1 in case of error.
-*/
-
-ZEXTERN int ZEXPORT gzgetc OF((gzFile file));
-/*
- Reads one byte from the compressed file. gzgetc returns this byte or -1
- in case of end of file or error. This is implemented as a macro for speed.
- As such, it does not do all of the checking the other functions do. I.e.
- it does not check to see if file is NULL, nor whether the structure file
- points to has been clobbered or not.
-*/
-
-ZEXTERN int ZEXPORT gzungetc OF((int c, gzFile file));
-/*
- Push one character back onto the stream to be read as the first character
- on the next read. At least one character of push-back is allowed.
- gzungetc() returns the character pushed, or -1 on failure. gzungetc() will
- fail if c is -1, and may fail if a character has been pushed but not read
- yet. If gzungetc is used immediately after gzopen or gzdopen, at least the
- output buffer size of pushed characters is allowed. (See gzbuffer above.)
- The pushed character will be discarded if the stream is repositioned with
- gzseek() or gzrewind().
-*/
-
-ZEXTERN int ZEXPORT gzflush OF((gzFile file, int flush));
-/*
- Flushes all pending output into the compressed file. The parameter flush
- is as in the deflate() function. The return value is the zlib error number
- (see function gzerror below). gzflush is only permitted when writing.
-
- If the flush parameter is Z_FINISH, the remaining data is written and the
- gzip stream is completed in the output. If gzwrite() is called again, a new
- gzip stream will be started in the output. gzread() is able to read such
- concatented gzip streams.
-
- gzflush should be called only when strictly necessary because it will
- degrade compression if called too often.
-*/
-
-/*
-ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile file,
- z_off_t offset, int whence));
-
- Sets the starting position for the next gzread or gzwrite on the given
- compressed file. The offset represents a number of bytes in the
- uncompressed data stream. The whence parameter is defined as in lseek(2);
- the value SEEK_END is not supported.
-
- If the file is opened for reading, this function is emulated but can be
- extremely slow. If the file is opened for writing, only forward seeks are
- supported; gzseek then compresses a sequence of zeroes up to the new
- starting position.
-
- gzseek returns the resulting offset location as measured in bytes from
- the beginning of the uncompressed stream, or -1 in case of error, in
- particular if the file is opened for writing and the new starting position
- would be before the current position.
-*/
-
-ZEXTERN int ZEXPORT gzrewind OF((gzFile file));
-/*
- Rewinds the given file. This function is supported only for reading.
-
- gzrewind(file) is equivalent to (int)gzseek(file, 0L, SEEK_SET)
-*/
-
-/*
-ZEXTERN z_off_t ZEXPORT gztell OF((gzFile file));
-
- Returns the starting position for the next gzread or gzwrite on the given
- compressed file. This position represents a number of bytes in the
- uncompressed data stream, and is zero when starting, even if appending or
- reading a gzip stream from the middle of a file using gzdopen().
-
- gztell(file) is equivalent to gzseek(file, 0L, SEEK_CUR)
-*/
-
-/*
-ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile file));
-
- Returns the current offset in the file being read or written. This offset
- includes the count of bytes that precede the gzip stream, for example when
- appending or when using gzdopen() for reading. When reading, the offset
- does not include as yet unused buffered input. This information can be used
- for a progress indicator. On error, gzoffset() returns -1.
-*/
-
-ZEXTERN int ZEXPORT gzeof OF((gzFile file));
-/*
- Returns true (1) if the end-of-file indicator has been set while reading,
- false (0) otherwise. Note that the end-of-file indicator is set only if the
- read tried to go past the end of the input, but came up short. Therefore,
- just like feof(), gzeof() may return false even if there is no more data to
- read, in the event that the last read request was for the exact number of
- bytes remaining in the input file. This will happen if the input file size
- is an exact multiple of the buffer size.
-
- If gzeof() returns true, then the read functions will return no more data,
- unless the end-of-file indicator is reset by gzclearerr() and the input file
- has grown since the previous end of file was detected.
-*/
-
-ZEXTERN int ZEXPORT gzdirect OF((gzFile file));
-/*
- Returns true (1) if file is being copied directly while reading, or false
- (0) if file is a gzip stream being decompressed.
-
- If the input file is empty, gzdirect() will return true, since the input
- does not contain a gzip stream.
-
- If gzdirect() is used immediately after gzopen() or gzdopen() it will
- cause buffers to be allocated to allow reading the file to determine if it
- is a gzip file. Therefore if gzbuffer() is used, it should be called before
- gzdirect().
-
- When writing, gzdirect() returns true (1) if transparent writing was
- requested ("wT" for the gzopen() mode), or false (0) otherwise. (Note:
- gzdirect() is not needed when writing. Transparent writing must be
- explicitly requested, so the application already knows the answer. When
- linking statically, using gzdirect() will include all of the zlib code for
- gzip file reading and decompression, which may not be desired.)
-*/
-
-ZEXTERN int ZEXPORT gzclose OF((gzFile file));
-/*
- Flushes all pending output if necessary, closes the compressed file and
- deallocates the (de)compression state. Note that once file is closed, you
- cannot call gzerror with file, since its structures have been deallocated.
- gzclose must not be called more than once on the same file, just as free
- must not be called more than once on the same allocation.
-
- gzclose will return Z_STREAM_ERROR if file is not valid, Z_ERRNO on a
- file operation error, Z_MEM_ERROR if out of memory, Z_BUF_ERROR if the
- last read ended in the middle of a gzip stream, or Z_OK on success.
-*/
-
-ZEXTERN int ZEXPORT gzclose_r OF((gzFile file));
-ZEXTERN int ZEXPORT gzclose_w OF((gzFile file));
-/*
- Same as gzclose(), but gzclose_r() is only for use when reading, and
- gzclose_w() is only for use when writing or appending. The advantage to
- using these instead of gzclose() is that they avoid linking in zlib
- compression or decompression code that is not used when only reading or only
- writing respectively. If gzclose() is used, then both compression and
- decompression code will be included the application when linking to a static
- zlib library.
-*/
-
-ZEXTERN const char * ZEXPORT gzerror OF((gzFile file, int *errnum));
-/*
- Returns the error message for the last error which occurred on the given
- compressed file. errnum is set to zlib error number. If an error occurred
- in the file system and not in the compression library, errnum is set to
- Z_ERRNO and the application may consult errno to get the exact error code.
-
- The application must not modify the returned string. Future calls to
- this function may invalidate the previously returned string. If file is
- closed, then the string previously returned by gzerror will no longer be
- available.
-
- gzerror() should be used to distinguish errors from end-of-file for those
- functions above that do not distinguish those cases in their return values.
-*/
-
-ZEXTERN void ZEXPORT gzclearerr OF((gzFile file));
-/*
- Clears the error and end-of-file flags for file. This is analogous to the
- clearerr() function in stdio. This is useful for continuing to read a gzip
- file that is being written concurrently.
-*/
-
-#endif /* !Z_SOLO */
-
- /* checksum functions */
-
-/*
- These functions are not related to compression but are exported
- anyway because they might be useful in applications using the compression
- library.
-*/
-
-ZEXTERN uLong ZEXPORT adler32 OF((uLong adler, const Bytef *buf, uInt len));
-/*
- Update a running Adler-32 checksum with the bytes buf[0..len-1] and
- return the updated checksum. If buf is Z_NULL, this function returns the
- required initial value for the checksum.
-
- An Adler-32 checksum is almost as reliable as a CRC32 but can be computed
- much faster.
-
- Usage example:
-
- uLong adler = adler32(0L, Z_NULL, 0);
-
- while (read_buffer(buffer, length) != EOF) {
- adler = adler32(adler, buffer, length);
- }
- if (adler != original_adler) error();
-*/
-
-/*
-ZEXTERN uLong ZEXPORT adler32_combine OF((uLong adler1, uLong adler2,
- z_off_t len2));
-
- Combine two Adler-32 checksums into one. For two sequences of bytes, seq1
- and seq2 with lengths len1 and len2, Adler-32 checksums were calculated for
- each, adler1 and adler2. adler32_combine() returns the Adler-32 checksum of
- seq1 and seq2 concatenated, requiring only adler1, adler2, and len2. Note
- that the z_off_t type (like off_t) is a signed integer. If len2 is
- negative, the result has no meaning or utility.
-*/
-
-ZEXTERN uLong ZEXPORT crc32 OF((uLong crc, const Bytef *buf, uInt len));
-/*
- Update a running CRC-32 with the bytes buf[0..len-1] and return the
- updated CRC-32. If buf is Z_NULL, this function returns the required
- initial value for the crc. Pre- and post-conditioning (one's complement) is
- performed within this function so it shouldn't be done by the application.
-
- Usage example:
-
- uLong crc = crc32(0L, Z_NULL, 0);
-
- while (read_buffer(buffer, length) != EOF) {
- crc = crc32(crc, buffer, length);
- }
- if (crc != original_crc) error();
-*/
-
-/*
-ZEXTERN uLong ZEXPORT crc32_combine OF((uLong crc1, uLong crc2, z_off_t len2));
-
- Combine two CRC-32 check values into one. For two sequences of bytes,
- seq1 and seq2 with lengths len1 and len2, CRC-32 check values were
- calculated for each, crc1 and crc2. crc32_combine() returns the CRC-32
- check value of seq1 and seq2 concatenated, requiring only crc1, crc2, and
- len2.
-*/
-
-
- /* various hacks, don't look :) */
-
-/* deflateInit and inflateInit are macros to allow checking the zlib version
- * and the compiler's view of z_stream:
- */
-ZEXTERN int ZEXPORT deflateInit_ OF((z_streamp strm, int level,
- const char *version, int stream_size));
-ZEXTERN int ZEXPORT inflateInit_ OF((z_streamp strm,
- const char *version, int stream_size));
-ZEXTERN int ZEXPORT deflateInit2_ OF((z_streamp strm, int level, int method,
- int windowBits, int memLevel,
- int strategy, const char *version,
- int stream_size));
-ZEXTERN int ZEXPORT inflateInit2_ OF((z_streamp strm, int windowBits,
- const char *version, int stream_size));
-ZEXTERN int ZEXPORT inflateBackInit_ OF((z_streamp strm, int windowBits,
- unsigned char FAR *window,
- const char *version,
- int stream_size));
-#define deflateInit(strm, level) \
- deflateInit_((strm), (level), ZLIB_VERSION, (int)sizeof(z_stream))
-#define inflateInit(strm) \
- inflateInit_((strm), ZLIB_VERSION, (int)sizeof(z_stream))
-#define deflateInit2(strm, level, method, windowBits, memLevel, strategy) \
- deflateInit2_((strm),(level),(method),(windowBits),(memLevel),\
- (strategy), ZLIB_VERSION, (int)sizeof(z_stream))
-#define inflateInit2(strm, windowBits) \
- inflateInit2_((strm), (windowBits), ZLIB_VERSION, \
- (int)sizeof(z_stream))
-#define inflateBackInit(strm, windowBits, window) \
- inflateBackInit_((strm), (windowBits), (window), \
- ZLIB_VERSION, (int)sizeof(z_stream))
-
-#ifndef Z_SOLO
-
-/* gzgetc() macro and its supporting function and exposed data structure. Note
- * that the real internal state is much larger than the exposed structure.
- * This abbreviated structure exposes just enough for the gzgetc() macro. The
- * user should not mess with these exposed elements, since their names or
- * behavior could change in the future, perhaps even capriciously. They can
- * only be used by the gzgetc() macro. You have been warned.
- */
-struct gzFile_s {
- unsigned have;
- unsigned char *next;
- z_off64_t pos;
-};
-ZEXTERN int ZEXPORT gzgetc_ OF((gzFile file)); /* backward compatibility */
-#ifdef Z_PREFIX_SET
-# undef z_gzgetc
-# define z_gzgetc(g) \
- ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g))
-#else
-# define gzgetc(g) \
- ((g)->have ? ((g)->have--, (g)->pos++, *((g)->next)++) : gzgetc(g))
-#endif
-
-/* provide 64-bit offset functions if _LARGEFILE64_SOURCE defined, and/or
- * change the regular functions to 64 bits if _FILE_OFFSET_BITS is 64 (if
- * both are true, the application gets the *64 functions, and the regular
- * functions are changed to 64 bits) -- in case these are set on systems
- * without large file support, _LFS64_LARGEFILE must also be true
- */
-#ifdef Z_LARGE64
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
- ZEXTERN z_off64_t ZEXPORT gzseek64 OF((gzFile, z_off64_t, int));
- ZEXTERN z_off64_t ZEXPORT gztell64 OF((gzFile));
- ZEXTERN z_off64_t ZEXPORT gzoffset64 OF((gzFile));
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off64_t));
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off64_t));
-#endif
-
-#if !defined(ZLIB_INTERNAL) && defined(Z_WANT64)
-# ifdef Z_PREFIX_SET
-# define z_gzopen z_gzopen64
-# define z_gzseek z_gzseek64
-# define z_gztell z_gztell64
-# define z_gzoffset z_gzoffset64
-# define z_adler32_combine z_adler32_combine64
-# define z_crc32_combine z_crc32_combine64
-# else
-# define gzopen gzopen64
-# define gzseek gzseek64
-# define gztell gztell64
-# define gzoffset gzoffset64
-# define adler32_combine adler32_combine64
-# define crc32_combine crc32_combine64
-# endif
-# ifndef Z_LARGE64
- ZEXTERN gzFile ZEXPORT gzopen64 OF((const char *, const char *));
- ZEXTERN z_off_t ZEXPORT gzseek64 OF((gzFile, z_off_t, int));
- ZEXTERN z_off_t ZEXPORT gztell64 OF((gzFile));
- ZEXTERN z_off_t ZEXPORT gzoffset64 OF((gzFile));
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
-# endif
-#else
- ZEXTERN gzFile ZEXPORT gzopen OF((const char *, const char *));
- ZEXTERN z_off_t ZEXPORT gzseek OF((gzFile, z_off_t, int));
- ZEXTERN z_off_t ZEXPORT gztell OF((gzFile));
- ZEXTERN z_off_t ZEXPORT gzoffset OF((gzFile));
- ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
- ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
-#endif
-
-#else /* Z_SOLO */
-
- ZEXTERN uLong ZEXPORT adler32_combine OF((uLong, uLong, z_off_t));
- ZEXTERN uLong ZEXPORT crc32_combine OF((uLong, uLong, z_off_t));
-
-#endif /* !Z_SOLO */
-
-/* hack for buggy compilers */
-#if !defined(ZUTIL_H) && !defined(NO_DUMMY_DECL)
- struct internal_state {int dummy;};
-#endif
-
-/* undocumented functions */
-ZEXTERN const char * ZEXPORT zError OF((int));
-ZEXTERN int ZEXPORT inflateSyncPoint OF((z_streamp));
-ZEXTERN const z_crc_t FAR * ZEXPORT get_crc_table OF((void));
-ZEXTERN int ZEXPORT inflateUndermine OF((z_streamp, int));
-ZEXTERN int ZEXPORT inflateResetKeep OF((z_streamp));
-ZEXTERN int ZEXPORT deflateResetKeep OF((z_streamp));
-#if defined(_WIN32) && !defined(Z_SOLO)
-ZEXTERN gzFile ZEXPORT gzopen_w OF((const wchar_t *path,
- const char *mode));
-#endif
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# ifndef Z_SOLO
-ZEXTERN int ZEXPORTVA gzvprintf Z_ARG((gzFile file,
- const char *format,
- va_list va));
-# endif
-#endif
-
-#ifdef __cplusplus
-}
-#endif
-
-#endif /* ZLIB_H */
+++ /dev/null
-ZLIB_1.2.0 {
- global:
- compressBound;
- deflateBound;
- inflateBack;
- inflateBackEnd;
- inflateBackInit_;
- inflateCopy;
- local:
- deflate_copyright;
- inflate_copyright;
- inflate_fast;
- inflate_table;
- zcalloc;
- zcfree;
- z_errmsg;
- gz_error;
- gz_intmax;
- _*;
-};
-
-ZLIB_1.2.0.2 {
- gzclearerr;
- gzungetc;
- zlibCompileFlags;
-} ZLIB_1.2.0;
-
-ZLIB_1.2.0.8 {
- deflatePrime;
-} ZLIB_1.2.0.2;
-
-ZLIB_1.2.2 {
- adler32_combine;
- crc32_combine;
- deflateSetHeader;
- inflateGetHeader;
-} ZLIB_1.2.0.8;
-
-ZLIB_1.2.2.3 {
- deflateTune;
- gzdirect;
-} ZLIB_1.2.2;
-
-ZLIB_1.2.2.4 {
- inflatePrime;
-} ZLIB_1.2.2.3;
-
-ZLIB_1.2.3.3 {
- adler32_combine64;
- crc32_combine64;
- gzopen64;
- gzseek64;
- gztell64;
- inflateUndermine;
-} ZLIB_1.2.2.4;
-
-ZLIB_1.2.3.4 {
- inflateReset2;
- inflateMark;
-} ZLIB_1.2.3.3;
-
-ZLIB_1.2.3.5 {
- gzbuffer;
- gzoffset;
- gzoffset64;
- gzclose_r;
- gzclose_w;
-} ZLIB_1.2.3.4;
-
-ZLIB_1.2.5.1 {
- deflatePending;
-} ZLIB_1.2.3.5;
-
-ZLIB_1.2.5.2 {
- deflateResetKeep;
- gzgetc_;
- inflateResetKeep;
-} ZLIB_1.2.5.1;
-
-ZLIB_1.2.7.1 {
- inflateGetDictionary;
- gzvprintf;
-} ZLIB_1.2.5.2;
+++ /dev/null
-prefix=@CMAKE_INSTALL_PREFIX@
-exec_prefix=@CMAKE_INSTALL_PREFIX@
-libdir=@INSTALL_LIB_DIR@
-sharedlibdir=@INSTALL_LIB_DIR@
-includedir=@INSTALL_INC_DIR@
-
-Name: zlib
-Description: zlib compression library
-Version: @VERSION@
-
-Requires:
-Libs: -L${libdir} -L${sharedlibdir} -lz
-Cflags: -I${includedir}
+++ /dev/null
-prefix=@prefix@
-exec_prefix=@exec_prefix@
-libdir=@libdir@
-sharedlibdir=@sharedlibdir@
-includedir=@includedir@
-
-Name: zlib
-Description: zlib compression library
-Version: @VERSION@
-
-Requires:
-Libs: -L${libdir} -L${sharedlibdir} -lz
-Cflags: -I${includedir}
+++ /dev/null
-#!/usr/bin/perl
-
-# Transform K&R C function definitions into ANSI equivalent.
-#
-# Author: Paul Marquess
-# Version: 1.0
-# Date: 3 October 2006
-
-# TODO
-#
-# Asumes no function pointer parameters. unless they are typedefed.
-# Assumes no literal strings that look like function definitions
-# Assumes functions start at the beginning of a line
-
-use strict;
-use warnings;
-
-local $/;
-$_ = <>;
-
-my $sp = qr{ \s* (?: /\* .*? \*/ )? \s* }x; # assume no nested comments
-
-my $d1 = qr{ $sp (?: [\w\*\s]+ $sp)* $sp \w+ $sp [\[\]\s]* $sp }x ;
-my $decl = qr{ $sp (?: \w+ $sp )+ $d1 }xo ;
-my $dList = qr{ $sp $decl (?: $sp , $d1 )* $sp ; $sp }xo ;
-
-
-while (s/^
- ( # Start $1
- ( # Start $2
- .*? # Minimal eat content
- ( ^ \w [\w\s\*]+ ) # $3 -- function name
- \s* # optional whitespace
- ) # $2 - Matched up to before parameter list
-
- \( \s* # Literal "(" + optional whitespace
- ( [^\)]+ ) # $4 - one or more anythings except ")"
- \s* \) # optional whitespace surrounding a Literal ")"
-
- ( (?: $dList )+ ) # $5
-
- $sp ^ { # literal "{" at start of line
- ) # Remember to $1
- //xsom
- )
-{
- my $all = $1 ;
- my $prefix = $2;
- my $param_list = $4 ;
- my $params = $5;
-
- StripComments($params);
- StripComments($param_list);
- $param_list =~ s/^\s+//;
- $param_list =~ s/\s+$//;
-
- my $i = 0 ;
- my %pList = map { $_ => $i++ }
- split /\s*,\s*/, $param_list;
- my $pMatch = '(\b' . join('|', keys %pList) . '\b)\W*$' ;
-
- my @params = split /\s*;\s*/, $params;
- my @outParams = ();
- foreach my $p (@params)
- {
- if ($p =~ /,/)
- {
- my @bits = split /\s*,\s*/, $p;
- my $first = shift @bits;
- $first =~ s/^\s*//;
- push @outParams, $first;
- $first =~ /^(\w+\s*)/;
- my $type = $1 ;
- push @outParams, map { $type . $_ } @bits;
- }
- else
- {
- $p =~ s/^\s+//;
- push @outParams, $p;
- }
- }
-
-
- my %tmp = map { /$pMatch/; $_ => $pList{$1} }
- @outParams ;
-
- @outParams = map { " $_" }
- sort { $tmp{$a} <=> $tmp{$b} }
- @outParams ;
-
- print $prefix ;
- print "(\n" . join(",\n", @outParams) . ")\n";
- print "{" ;
-
-}
-
-# Output any trailing code.
-print ;
-exit 0;
-
-
-sub StripComments
-{
-
- no warnings;
-
- # Strip C & C++ coments
- # From the perlfaq
- $_[0] =~
-
- s{
- /\* ## Start of /* ... */ comment
- [^*]*\*+ ## Non-* followed by 1-or-more *'s
- (
- [^/*][^*]*\*+
- )* ## 0-or-more things which don't start with /
- ## but do end with '*'
- / ## End of /* ... */ comment
-
- | ## OR C++ Comment
- // ## Start of C++ comment //
- [^\n]* ## followed by 0-or-more non end of line characters
-
- | ## OR various things which aren't comments:
-
- (
- " ## Start of " ... " string
- (
- \\. ## Escaped char
- | ## OR
- [^"\\] ## Non "\
- )*
- " ## End of " ... " string
-
- | ## OR
-
- ' ## Start of ' ... ' string
- (
- \\. ## Escaped char
- | ## OR
- [^'\\] ## Non '\
- )*
- ' ## End of ' ... ' string
-
- | ## OR
-
- . ## Anything other char
- [^/"'\\]* ## Chars which doesn't start a comment, string or escape
- )
- }{$2}gxs;
-
-}
+++ /dev/null
-/* zutil.c -- target dependent utility functions for the compression library
- * Copyright (C) 1995-2005, 2010, 2011, 2012 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* @(#) $Id$ */
-
-#include "zutil.h"
-#ifndef Z_SOLO
-# include "gzguts.h"
-#endif
-
-#ifndef NO_DUMMY_DECL
-struct internal_state {int dummy;}; /* for buggy compilers */
-#endif
-
-z_const char * const z_errmsg[10] = {
-"need dictionary", /* Z_NEED_DICT 2 */
-"stream end", /* Z_STREAM_END 1 */
-"", /* Z_OK 0 */
-"file error", /* Z_ERRNO (-1) */
-"stream error", /* Z_STREAM_ERROR (-2) */
-"data error", /* Z_DATA_ERROR (-3) */
-"insufficient memory", /* Z_MEM_ERROR (-4) */
-"buffer error", /* Z_BUF_ERROR (-5) */
-"incompatible version",/* Z_VERSION_ERROR (-6) */
-""};
-
-
-const char * ZEXPORT zlibVersion()
-{
- return ZLIB_VERSION;
-}
-
-uLong ZEXPORT zlibCompileFlags()
-{
- uLong flags;
-
- flags = 0;
- switch ((int)(sizeof(uInt))) {
- case 2: break;
- case 4: flags += 1; break;
- case 8: flags += 2; break;
- default: flags += 3;
- }
- switch ((int)(sizeof(uLong))) {
- case 2: break;
- case 4: flags += 1 << 2; break;
- case 8: flags += 2 << 2; break;
- default: flags += 3 << 2;
- }
- switch ((int)(sizeof(voidpf))) {
- case 2: break;
- case 4: flags += 1 << 4; break;
- case 8: flags += 2 << 4; break;
- default: flags += 3 << 4;
- }
- switch ((int)(sizeof(z_off_t))) {
- case 2: break;
- case 4: flags += 1 << 6; break;
- case 8: flags += 2 << 6; break;
- default: flags += 3 << 6;
- }
-#ifdef DEBUG
- flags += 1 << 8;
-#endif
-#if defined(ASMV) || defined(ASMINF)
- flags += 1 << 9;
-#endif
-#ifdef ZLIB_WINAPI
- flags += 1 << 10;
-#endif
-#ifdef BUILDFIXED
- flags += 1 << 12;
-#endif
-#ifdef DYNAMIC_CRC_TABLE
- flags += 1 << 13;
-#endif
-#ifdef NO_GZCOMPRESS
- flags += 1L << 16;
-#endif
-#ifdef NO_GZIP
- flags += 1L << 17;
-#endif
-#ifdef PKZIP_BUG_WORKAROUND
- flags += 1L << 20;
-#endif
-#ifdef FASTEST
- flags += 1L << 21;
-#endif
-#if defined(STDC) || defined(Z_HAVE_STDARG_H)
-# ifdef NO_vsnprintf
- flags += 1L << 25;
-# ifdef HAS_vsprintf_void
- flags += 1L << 26;
-# endif
-# else
-# ifdef HAS_vsnprintf_void
- flags += 1L << 26;
-# endif
-# endif
-#else
- flags += 1L << 24;
-# ifdef NO_snprintf
- flags += 1L << 25;
-# ifdef HAS_sprintf_void
- flags += 1L << 26;
-# endif
-# else
-# ifdef HAS_snprintf_void
- flags += 1L << 26;
-# endif
-# endif
-#endif
- return flags;
-}
-
-#ifdef DEBUG
-
-# ifndef verbose
-# define verbose 0
-# endif
-int ZLIB_INTERNAL z_verbose = verbose;
-
-void ZLIB_INTERNAL z_error (m)
- char *m;
-{
- fprintf(stderr, "%s\n", m);
- exit(1);
-}
-#endif
-
-/* exported to allow conversion of error code to string for compress() and
- * uncompress()
- */
-const char * ZEXPORT zError(err)
- int err;
-{
- return ERR_MSG(err);
-}
-
-#if defined(_WIN32_WCE)
- /* The Microsoft C Run-Time Library for Windows CE doesn't have
- * errno. We define it as a global variable to simplify porting.
- * Its value is always 0 and should not be used.
- */
- int errno = 0;
-#endif
-
-#ifndef HAVE_MEMCPY
-
-void ZLIB_INTERNAL zmemcpy(dest, source, len)
- Bytef* dest;
- const Bytef* source;
- uInt len;
-{
- if (len == 0) return;
- do {
- *dest++ = *source++; /* ??? to be unrolled */
- } while (--len != 0);
-}
-
-int ZLIB_INTERNAL zmemcmp(s1, s2, len)
- const Bytef* s1;
- const Bytef* s2;
- uInt len;
-{
- uInt j;
-
- for (j = 0; j < len; j++) {
- if (s1[j] != s2[j]) return 2*(s1[j] > s2[j])-1;
- }
- return 0;
-}
-
-void ZLIB_INTERNAL zmemzero(dest, len)
- Bytef* dest;
- uInt len;
-{
- if (len == 0) return;
- do {
- *dest++ = 0; /* ??? to be unrolled */
- } while (--len != 0);
-}
-#endif
-
-#ifndef Z_SOLO
-
-#ifdef SYS16BIT
-
-#ifdef __TURBOC__
-/* Turbo C in 16-bit mode */
-
-# define MY_ZCALLOC
-
-/* Turbo C malloc() does not allow dynamic allocation of 64K bytes
- * and farmalloc(64K) returns a pointer with an offset of 8, so we
- * must fix the pointer. Warning: the pointer must be put back to its
- * original form in order to free it, use zcfree().
- */
-
-#define MAX_PTR 10
-/* 10*64K = 640K */
-
-local int next_ptr = 0;
-
-typedef struct ptr_table_s {
- voidpf org_ptr;
- voidpf new_ptr;
-} ptr_table;
-
-local ptr_table table[MAX_PTR];
-/* This table is used to remember the original form of pointers
- * to large buffers (64K). Such pointers are normalized with a zero offset.
- * Since MSDOS is not a preemptive multitasking OS, this table is not
- * protected from concurrent access. This hack doesn't work anyway on
- * a protected system like OS/2. Use Microsoft C instead.
- */
-
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, unsigned items, unsigned size)
-{
- voidpf buf = opaque; /* just to make some compilers happy */
- ulg bsize = (ulg)items*size;
-
- /* If we allocate less than 65520 bytes, we assume that farmalloc
- * will return a usable pointer which doesn't have to be normalized.
- */
- if (bsize < 65520L) {
- buf = farmalloc(bsize);
- if (*(ush*)&buf != 0) return buf;
- } else {
- buf = farmalloc(bsize + 16L);
- }
- if (buf == NULL || next_ptr >= MAX_PTR) return NULL;
- table[next_ptr].org_ptr = buf;
-
- /* Normalize the pointer to seg:0 */
- *((ush*)&buf+1) += ((ush)((uch*)buf-0) + 15) >> 4;
- *(ush*)&buf = 0;
- table[next_ptr++].new_ptr = buf;
- return buf;
-}
-
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
-{
- int n;
- if (*(ush*)&ptr != 0) { /* object < 64K */
- farfree(ptr);
- return;
- }
- /* Find the original pointer */
- for (n = 0; n < next_ptr; n++) {
- if (ptr != table[n].new_ptr) continue;
-
- farfree(table[n].org_ptr);
- while (++n < next_ptr) {
- table[n-1] = table[n];
- }
- next_ptr--;
- return;
- }
- ptr = opaque; /* just to make some compilers happy */
- Assert(0, "zcfree: ptr not found");
-}
-
-#endif /* __TURBOC__ */
-
-
-#ifdef M_I86
-/* Microsoft C in 16-bit mode */
-
-# define MY_ZCALLOC
-
-#if (!defined(_MSC_VER) || (_MSC_VER <= 600))
-# define _halloc halloc
-# define _hfree hfree
-#endif
-
-voidpf ZLIB_INTERNAL zcalloc (voidpf opaque, uInt items, uInt size)
-{
- if (opaque) opaque = 0; /* to make compiler happy */
- return _halloc((long)items, size);
-}
-
-void ZLIB_INTERNAL zcfree (voidpf opaque, voidpf ptr)
-{
- if (opaque) opaque = 0; /* to make compiler happy */
- _hfree(ptr);
-}
-
-#endif /* M_I86 */
-
-#endif /* SYS16BIT */
-
-
-#ifndef MY_ZCALLOC /* Any system without a special alloc function */
-
-#ifndef STDC
-extern voidp malloc OF((uInt size));
-extern voidp calloc OF((uInt items, uInt size));
-extern void free OF((voidpf ptr));
-#endif
-
-voidpf ZLIB_INTERNAL zcalloc (opaque, items, size)
- voidpf opaque;
- unsigned items;
- unsigned size;
-{
- if (opaque) items += size - size; /* make compiler happy */
- return sizeof(uInt) > 2 ? (voidpf)malloc(items * size) :
- (voidpf)calloc(items, size);
-}
-
-void ZLIB_INTERNAL zcfree (opaque, ptr)
- voidpf opaque;
- voidpf ptr;
-{
- free(ptr);
- if (opaque) return; /* make compiler happy */
-}
-
-#endif /* MY_ZCALLOC */
-
-#endif /* !Z_SOLO */
+++ /dev/null
-/* zutil.h -- internal interface and configuration of the compression library
- * Copyright (C) 1995-2013 Jean-loup Gailly.
- * For conditions of distribution and use, see copyright notice in zlib.h
- */
-
-/* WARNING: this file should *not* be used by applications. It is
- part of the implementation of the compression library and is
- subject to change. Applications should only use zlib.h.
- */
-
-/* @(#) $Id$ */
-
-#ifndef ZUTIL_H
-#define ZUTIL_H
-
-#ifdef HAVE_HIDDEN
-# define ZLIB_INTERNAL __attribute__((visibility ("hidden")))
-#else
-# define ZLIB_INTERNAL
-#endif
-
-#include "zlib.h"
-
-#if defined(STDC) && !defined(Z_SOLO)
-# if !(defined(_WIN32_WCE) && defined(_MSC_VER))
-# include <stddef.h>
-# endif
-# include <string.h>
-# include <stdlib.h>
-#endif
-
-#ifdef Z_SOLO
- typedef long ptrdiff_t; /* guess -- will be caught if guess is wrong */
-#endif
-
-#ifndef local
-# define local static
-#endif
-/* compile with -Dlocal if your debugger can't find static symbols */
-
-typedef unsigned char uch;
-typedef uch FAR uchf;
-typedef unsigned short ush;
-typedef ush FAR ushf;
-typedef unsigned long ulg;
-
-extern z_const char * const z_errmsg[10]; /* indexed by 2-zlib_error */
-/* (size given to avoid silly warnings with Visual C++) */
-
-#define ERR_MSG(err) z_errmsg[Z_NEED_DICT-(err)]
-
-#define ERR_RETURN(strm,err) \
- return (strm->msg = ERR_MSG(err), (err))
-/* To be used only when the state is known to be valid */
-
- /* common constants */
-
-#ifndef DEF_WBITS
-# define DEF_WBITS MAX_WBITS
-#endif
-/* default windowBits for decompression. MAX_WBITS is for compression only */
-
-#if MAX_MEM_LEVEL >= 8
-# define DEF_MEM_LEVEL 8
-#else
-# define DEF_MEM_LEVEL MAX_MEM_LEVEL
-#endif
-/* default memLevel */
-
-#define STORED_BLOCK 0
-#define STATIC_TREES 1
-#define DYN_TREES 2
-/* The three kinds of block type */
-
-#define MIN_MATCH 3
-#define MAX_MATCH 258
-/* The minimum and maximum match lengths */
-
-#define PRESET_DICT 0x20 /* preset dictionary flag in zlib header */
-
- /* target dependencies */
-
-#if defined(MSDOS) || (defined(WINDOWS) && !defined(WIN32))
-# define OS_CODE 0x00
-# ifndef Z_SOLO
-# if defined(__TURBOC__) || defined(__BORLANDC__)
-# if (__STDC__ == 1) && (defined(__LARGE__) || defined(__COMPACT__))
- /* Allow compilation with ANSI keywords only enabled */
- void _Cdecl farfree( void *block );
- void *_Cdecl farmalloc( unsigned long nbytes );
-# else
-# include <alloc.h>
-# endif
-# else /* MSC or DJGPP */
-# include <malloc.h>
-# endif
-# endif
-#endif
-
-#ifdef AMIGA
-# define OS_CODE 0x01
-#endif
-
-#if defined(VAXC) || defined(VMS)
-# define OS_CODE 0x02
-# define F_OPEN(name, mode) \
- fopen((name), (mode), "mbc=60", "ctx=stm", "rfm=fix", "mrs=512")
-#endif
-
-#if defined(ATARI) || defined(atarist)
-# define OS_CODE 0x05
-#endif
-
-#ifdef OS2
-# define OS_CODE 0x06
-# if defined(M_I86) && !defined(Z_SOLO)
-# include <malloc.h>
-# endif
-#endif
-
-#if defined(MACOS) || defined(TARGET_OS_MAC)
-# define OS_CODE 0x07
-# ifndef Z_SOLO
-# if defined(__MWERKS__) && __dest_os != __be_os && __dest_os != __win32_os
-# include <unix.h> /* for fdopen */
-# else
-# ifndef fdopen
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# endif
-# endif
-# endif
-#endif
-
-#ifdef TOPS20
-# define OS_CODE 0x0a
-#endif
-
-#ifdef WIN32
-# ifndef __CYGWIN__ /* Cygwin is Unix, not Win32 */
-# define OS_CODE 0x0b
-# endif
-#endif
-
-#ifdef __50SERIES /* Prime/PRIMOS */
-# define OS_CODE 0x0f
-#endif
-
-#if defined(_BEOS_) || defined(RISCOS)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-#endif
-
-#if (defined(_MSC_VER) && (_MSC_VER > 600)) && !defined __INTERIX
-# if defined(_WIN32_WCE)
-# define fdopen(fd,mode) NULL /* No fdopen() */
-# ifndef _PTRDIFF_T_DEFINED
- typedef int ptrdiff_t;
-# define _PTRDIFF_T_DEFINED
-# endif
-# else
-# define fdopen(fd,type) _fdopen(fd,type)
-# endif
-#endif
-
-#if defined(__BORLANDC__) && !defined(MSDOS)
- #pragma warn -8004
- #pragma warn -8008
- #pragma warn -8066
-#endif
-
-/* provide prototypes for these when building zlib without LFS */
-#if !defined(_WIN32) && \
- (!defined(_LARGEFILE64_SOURCE) || _LFS64_LARGEFILE-0 == 0)
- ZEXTERN uLong ZEXPORT adler32_combine64 OF((uLong, uLong, z_off_t));
- ZEXTERN uLong ZEXPORT crc32_combine64 OF((uLong, uLong, z_off_t));
-#endif
-
- /* common defaults */
-
-#ifndef OS_CODE
-# define OS_CODE 0x03 /* assume Unix */
-#endif
-
-#ifndef F_OPEN
-# define F_OPEN(name, mode) fopen((name), (mode))
-#endif
-
- /* functions */
-
-#if defined(pyr) || defined(Z_SOLO)
-# define NO_MEMCPY
-#endif
-#if defined(SMALL_MEDIUM) && !defined(_MSC_VER) && !defined(__SC__)
- /* Use our own functions for small and medium model with MSC <= 5.0.
- * You may have to use the same strategy for Borland C (untested).
- * The __SC__ check is for Symantec.
- */
-# define NO_MEMCPY
-#endif
-#if defined(STDC) && !defined(HAVE_MEMCPY) && !defined(NO_MEMCPY)
-# define HAVE_MEMCPY
-#endif
-#ifdef HAVE_MEMCPY
-# ifdef SMALL_MEDIUM /* MSDOS small or medium model */
-# define zmemcpy _fmemcpy
-# define zmemcmp _fmemcmp
-# define zmemzero(dest, len) _fmemset(dest, 0, len)
-# else
-# define zmemcpy memcpy
-# define zmemcmp memcmp
-# define zmemzero(dest, len) memset(dest, 0, len)
-# endif
-#else
- void ZLIB_INTERNAL zmemcpy OF((Bytef* dest, const Bytef* source, uInt len));
- int ZLIB_INTERNAL zmemcmp OF((const Bytef* s1, const Bytef* s2, uInt len));
- void ZLIB_INTERNAL zmemzero OF((Bytef* dest, uInt len));
-#endif
-
-/* Diagnostic functions */
-#ifdef DEBUG
-# include <stdio.h>
- extern int ZLIB_INTERNAL z_verbose;
- extern void ZLIB_INTERNAL z_error OF((char *m));
-# define Assert(cond,msg) {if(!(cond)) z_error(msg);}
-# define Trace(x) {if (z_verbose>=0) fprintf x ;}
-# define Tracev(x) {if (z_verbose>0) fprintf x ;}
-# define Tracevv(x) {if (z_verbose>1) fprintf x ;}
-# define Tracec(c,x) {if (z_verbose>0 && (c)) fprintf x ;}
-# define Tracecv(c,x) {if (z_verbose>1 && (c)) fprintf x ;}
-#else
-# define Assert(cond,msg)
-# define Trace(x)
-# define Tracev(x)
-# define Tracevv(x)
-# define Tracec(c,x)
-# define Tracecv(c,x)
-#endif
-
-#ifndef Z_SOLO
- voidpf ZLIB_INTERNAL zcalloc OF((voidpf opaque, unsigned items,
- unsigned size));
- void ZLIB_INTERNAL zcfree OF((voidpf opaque, voidpf ptr));
-#endif
-
-#define ZALLOC(strm, items, size) \
- (*((strm)->zalloc))((strm)->opaque, (items), (size))
-#define ZFREE(strm, addr) (*((strm)->zfree))((strm)->opaque, (voidpf)(addr))
-#define TRY_FREE(s, p) {if (p) ZFREE(s, p);}
-
-/* Reverse the bytes in a 32-bit value */
-#define ZSWAP32(q) ((((q) >> 24) & 0xff) + (((q) >> 8) & 0xff00) + \
- (((q) & 0xff00) << 8) + (((q) & 0xff) << 24))
-
-#endif /* ZUTIL_H */
projects / l4.git / commitdiff
