2 /* pngtest.c - a simple test program to test libpng
4 * Last changed in libpng 1.6.1 [March 28, 2013]
5 * Copyright (c) 1998-2013 Glenn Randers-Pehrson
6 * (Version 0.96 Copyright (c) 1996, 1997 Andreas Dilger)
7 * (Version 0.88 Copyright (c) 1995, 1996 Guy Eric Schalnat, Group 42, Inc.)
9 * This code is released under the libpng license.
10 * For conditions of distribution and use, see the disclaimer
11 * and license in png.h
13 * This program reads in a PNG image, writes it out again, and then
14 * compares the two files. If the files are identical, this shows that
15 * the basic chunk handling, filtering, and (de)compression code is working
16 * properly. It does not currently test all of the transforms, although
19 * The program will report "FAIL" in certain legitimate cases:
20 * 1) when the compression level or filter selection method is changed.
21 * 2) when the maximum IDAT size (PNG_ZBUF_SIZE in pngconf.h) is not 8192.
22 * 3) unknown unsafe-to-copy ancillary chunks or unknown critical chunks
23 * exist in the input file.
24 * 4) others not listed here...
25 * In these cases, it is best to check with another tool such as "pngcheck"
26 * to see what the differences between the two files are.
28 * If a filename is given on the command-line, then this file is used
29 * for the input, rather than the default "pngtest.png". This allows
30 * testing a wide variety of files easily. You can also test a number
31 * of files at once by typing "pngtest -m file1.png file2.png ..."
34 #define _POSIX_SOURCE 1
40 /* Defined so I can write to a file on gui/windowing platforms */
41 /* #define STDERR stderr */
42 #define STDERR stdout /* For DOS */
46 #ifdef PNG_READ_SUPPORTED /* else nothing can be done */
48 /* Copied from pngpriv.h but only used in error messages below. */
50 # define PNG_ZBUF_SIZE 8192
52 #define FCLOSE(file) fclose(file)
54 #ifndef PNG_STDIO_SUPPORTED
55 typedef FILE * png_FILE_p;
58 /* Makes pngtest verbose so we can find problems. */
64 # define pngtest_debug(m) ((void)fprintf(stderr, m "\n"))
65 # define pngtest_debug1(m,p1) ((void)fprintf(stderr, m "\n", p1))
66 # define pngtest_debug2(m,p1,p2) ((void)fprintf(stderr, m "\n", p1, p2))
68 # define pngtest_debug(m) ((void)0)
69 # define pngtest_debug1(m,p1) ((void)0)
70 # define pngtest_debug2(m,p1,p2) ((void)0)
74 # define SINGLE_ROWBUF_ALLOC /* Makes buffer overruns easier to nail */
78 #define PNGTEST_TIMING
81 #ifndef PNG_FLOATING_POINT_SUPPORTED
86 static float t_start, t_stop, t_decode, t_encode, t_misc;
90 #ifdef PNG_TIME_RFC1123_SUPPORTED
91 #define PNG_tIME_STRING_LENGTH 29
92 static int tIME_chunk_present = 0;
93 static char tIME_string[PNG_tIME_STRING_LENGTH] = "tIME chunk is not present";
96 static int verbose = 0;
97 static int strict = 0;
98 static int relaxed = 0;
99 static int unsupported_chunks = 0; /* chunk unsupported by libpng in input */
100 static int error_count = 0; /* count calls to png_error */
101 static int warning_count = 0; /* count calls to png_warning */
107 /* Define png_jmpbuf() in case we are using a pre-1.0.6 version of libpng */
109 # define png_jmpbuf(png_ptr) png_ptr->jmpbuf
112 /* Defines for unknown chunk handling if required. */
113 #ifndef PNG_HANDLE_CHUNK_ALWAYS
114 # define PNG_HANDLE_CHUNK_ALWAYS 3
116 #ifndef PNG_HANDLE_CHUNK_IF_SAFE
117 # define PNG_HANDLE_CHUNK_IF_SAFE 2
120 /* Utility to save typing/errors, the argument must be a name */
121 #define MEMZERO(var) ((void)memset(&var, 0, sizeof var))
123 /* Example of using row callbacks to make a simple progress meter */
124 static int status_pass = 1;
125 static int status_dots_requested = 0;
126 static int status_dots = 1;
129 read_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
131 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX)
134 if (status_pass != pass)
136 fprintf(stdout, "\n Pass %d: ", pass);
143 if (status_dots == 0)
145 fprintf(stdout, "\n ");
149 fprintf(stdout, "r");
152 #ifdef PNG_WRITE_SUPPORTED
154 write_row_callback(png_structp png_ptr, png_uint_32 row_number, int pass)
156 if (png_ptr == NULL || row_number > PNG_UINT_31_MAX || pass > 7)
159 fprintf(stdout, "w");
164 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
165 /* Example of using user transform callback (we don't transform anything,
166 * but merely examine the row filters. We set this to 256 rather than
167 * 5 in case illegal filter values are present.)
169 static png_uint_32 filters_used[256];
171 count_filters(png_structp png_ptr, png_row_infop row_info, png_bytep data)
173 if (png_ptr != NULL && row_info != NULL)
174 ++filters_used[*(data - 1)];
178 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
179 /* Example of using user transform callback (we don't transform anything,
180 * but merely count the zero samples)
183 static png_uint_32 zero_samples;
186 count_zero_samples(png_structp png_ptr, png_row_infop row_info, png_bytep data)
192 /* Contents of row_info:
193 * png_uint_32 width width of row
194 * png_uint_32 rowbytes number of bytes in row
195 * png_byte color_type color type of pixels
196 * png_byte bit_depth bit depth of samples
197 * png_byte channels number of channels (1-4)
198 * png_byte pixel_depth bits per pixel (depth*channels)
201 /* Counts the number of zero samples (or zero pixels if color_type is 3 */
203 if (row_info->color_type == 0 || row_info->color_type == 3)
206 png_uint_32 n, nstop;
208 for (n = 0, nstop=row_info->width; n<nstop; n++)
210 if (row_info->bit_depth == 1)
212 if (((*dp << pos++ ) & 0x80) == 0)
222 if (row_info->bit_depth == 2)
224 if (((*dp << (pos+=2)) & 0xc0) == 0)
234 if (row_info->bit_depth == 4)
236 if (((*dp << (pos+=4)) & 0xf0) == 0)
246 if (row_info->bit_depth == 8)
250 if (row_info->bit_depth == 16)
252 if ((*dp | *(dp+1)) == 0)
258 else /* Other color types */
260 png_uint_32 n, nstop;
262 int color_channels = row_info->channels;
263 if (row_info->color_type > 3)color_channels--;
265 for (n = 0, nstop=row_info->width; n<nstop; n++)
267 for (channel = 0; channel < color_channels; channel++)
269 if (row_info->bit_depth == 8)
273 if (row_info->bit_depth == 16)
275 if ((*dp | *(dp+1)) == 0)
281 if (row_info->color_type > 3)
284 if (row_info->bit_depth == 16)
290 #endif /* PNG_WRITE_USER_TRANSFORM_SUPPORTED */
292 #ifndef PNG_STDIO_SUPPORTED
293 /* START of code to validate stdio-free compilation */
294 /* These copies of the default read/write functions come from pngrio.c and
295 * pngwio.c. They allow "don't include stdio" testing of the library.
296 * This is the function that does the actual reading of data. If you are
297 * not reading from a standard C stream, you should create a replacement
298 * read_data function and use it at run time with png_set_read_fn(), rather
299 * than changing the library.
302 #ifdef PNG_IO_STATE_SUPPORTED
304 pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
307 pngtest_check_io_state(png_structp png_ptr, png_size_t data_length,
310 png_uint_32 io_state = png_get_io_state(png_ptr);
313 /* Check if the current operation (reading / writing) is as expected. */
314 if ((io_state & PNG_IO_MASK_OP) != io_op)
315 png_error(png_ptr, "Incorrect operation in I/O state");
317 /* Check if the buffer size specific to the current location
318 * (file signature / header / data / crc) is as expected.
320 switch (io_state & PNG_IO_MASK_LOC)
322 case PNG_IO_SIGNATURE:
326 case PNG_IO_CHUNK_HDR:
327 if (data_length != 8)
330 case PNG_IO_CHUNK_DATA:
331 break; /* no restrictions here */
332 case PNG_IO_CHUNK_CRC:
333 if (data_length != 4)
337 err = 1; /* uninitialized */
340 png_error(png_ptr, "Bad I/O state or buffer size");
345 pngtest_read_data(png_structp png_ptr, png_bytep data, png_size_t length)
347 png_size_t check = 0;
350 /* fread() returns 0 on error, so it is OK to store this in a png_size_t
351 * instead of an int, which is what fread() actually returns.
353 io_ptr = png_get_io_ptr(png_ptr);
356 check = fread(data, 1, length, (png_FILE_p)io_ptr);
361 png_error(png_ptr, "Read Error");
364 #ifdef PNG_IO_STATE_SUPPORTED
365 pngtest_check_io_state(png_ptr, length, PNG_IO_READING);
369 #ifdef PNG_WRITE_FLUSH_SUPPORTED
371 pngtest_flush(png_structp png_ptr)
373 /* Do nothing; fflush() is said to be just a waste of energy. */
374 PNG_UNUSED(png_ptr) /* Stifle compiler warning */
378 /* This is the function that does the actual writing of data. If you are
379 * not writing to a standard C stream, you should create a replacement
380 * write_data function and use it at run time with png_set_write_fn(), rather
381 * than changing the library.
384 pngtest_write_data(png_structp png_ptr, png_bytep data, png_size_t length)
388 check = fwrite(data, 1, length, (png_FILE_p)png_get_io_ptr(png_ptr));
392 png_error(png_ptr, "Write Error");
395 #ifdef PNG_IO_STATE_SUPPORTED
396 pngtest_check_io_state(png_ptr, length, PNG_IO_WRITING);
399 #endif /* !PNG_STDIO_SUPPORTED */
401 /* This function is called when there is a warning, but the library thinks
402 * it can continue anyway. Replacement functions don't have to do anything
403 * here if you don't want to. In the default configuration, png_ptr is
404 * not used, but it is passed in case it may be useful.
408 PNG_CONST char *file_name;
409 } pngtest_error_parameters;
412 pngtest_warning(png_structp png_ptr, png_const_charp message)
414 PNG_CONST char *name = "UNKNOWN (ERROR!)";
415 pngtest_error_parameters *test =
416 (pngtest_error_parameters*)png_get_error_ptr(png_ptr);
420 if (test != NULL && test->file_name != NULL)
421 name = test->file_name;
423 fprintf(STDERR, "%s: libpng warning: %s\n", name, message);
426 /* This is the default error handling function. Note that replacements for
427 * this function MUST NOT RETURN, or the program will likely crash. This
428 * function is used by default, or if the program supplies NULL for the
429 * error function pointer in png_set_error_fn().
432 pngtest_error(png_structp png_ptr, png_const_charp message)
436 pngtest_warning(png_ptr, message);
437 /* We can return because png_error calls the default handler, which is
438 * actually OK in this case.
442 /* END of code to validate stdio-free compilation */
444 /* START of code to validate memory allocation and deallocation */
445 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
447 /* Allocate memory. For reasonable files, size should never exceed
448 * 64K. However, zlib may allocate more then 64K if you don't tell
449 * it not to. See zconf.h and png.h for more information. zlib does
450 * need to allocate exactly 64K, so whatever you call here must
451 * have the ability to do that.
453 * This piece of code can be compiled to validate max 64K allocations
454 * by setting MAXSEG_64K in zlib zconf.h *or* PNG_MAX_MALLOC_64K.
456 typedef struct memory_information
458 png_alloc_size_t size;
460 struct memory_information *next;
461 } memory_information;
462 typedef memory_information *memory_infop;
464 static memory_infop pinformation = NULL;
465 static int current_allocation = 0;
466 static int maximum_allocation = 0;
467 static int total_allocation = 0;
468 static int num_allocations = 0;
470 png_voidp PNGCBAPI png_debug_malloc PNGARG((png_structp png_ptr,
471 png_alloc_size_t size));
472 void PNGCBAPI png_debug_free PNGARG((png_structp png_ptr, png_voidp ptr));
475 PNGCBAPI png_debug_malloc(png_structp png_ptr, png_alloc_size_t size)
478 /* png_malloc has already tested for NULL; png_create_struct calls
479 * png_debug_malloc directly, with png_ptr == NULL which is OK
485 /* This calls the library allocator twice, once to get the requested
486 buffer and once to get a new free list entry. */
488 /* Disable malloc_fn and free_fn */
490 png_set_mem_fn(png_ptr, NULL, NULL, NULL);
491 pinfo = (memory_infop)png_malloc(png_ptr,
494 current_allocation += size;
495 total_allocation += size;
498 if (current_allocation > maximum_allocation)
499 maximum_allocation = current_allocation;
501 pinfo->pointer = png_malloc(png_ptr, size);
502 /* Restore malloc_fn and free_fn */
504 png_set_mem_fn(png_ptr,
505 NULL, png_debug_malloc, png_debug_free);
507 if (size != 0 && pinfo->pointer == NULL)
509 current_allocation -= size;
510 total_allocation -= size;
512 "out of memory in pngtest->png_debug_malloc");
515 pinfo->next = pinformation;
516 pinformation = pinfo;
517 /* Make sure the caller isn't assuming zeroed memory. */
518 memset(pinfo->pointer, 0xdd, pinfo->size);
521 printf("png_malloc %lu bytes at %p\n", (unsigned long)size,
524 return (png_voidp)(pinfo->pointer);
528 /* Free a pointer. It is removed from the list at the same time. */
530 png_debug_free(png_structp png_ptr, png_voidp ptr)
533 fprintf(STDERR, "NULL pointer to png_debug_free.\n");
537 #if 0 /* This happens all the time. */
538 fprintf(STDERR, "WARNING: freeing NULL pointer\n");
543 /* Unlink the element from the list. */
545 memory_infop *ppinfo = &pinformation;
549 memory_infop pinfo = *ppinfo;
551 if (pinfo->pointer == ptr)
553 *ppinfo = pinfo->next;
554 current_allocation -= pinfo->size;
555 if (current_allocation < 0)
556 fprintf(STDERR, "Duplicate free of memory\n");
557 /* We must free the list element too, but first kill
558 the memory that is to be freed. */
559 memset(ptr, 0x55, pinfo->size);
560 png_free_default(png_ptr, pinfo);
565 if (pinfo->next == NULL)
567 fprintf(STDERR, "Pointer %x not found\n", (unsigned int)ptr);
571 ppinfo = &pinfo->next;
575 /* Finally free the data. */
577 printf("Freeing %p\n", ptr);
579 png_free_default(png_ptr, ptr);
582 #endif /* PNG_USER_MEM_SUPPORTED && PNG_DEBUG */
583 /* END of code to test memory allocation/deallocation */
586 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
587 /* Demonstration of user chunk support of the sTER and vpAg chunks */
589 /* (sTER is a public chunk not yet known by libpng. vpAg is a private
590 chunk used in ImageMagick to store "virtual page" size). */
592 static struct user_chunk_data
594 png_const_infop info_ptr;
595 png_uint_32 vpAg_width, vpAg_height;
602 /* Used for location and order; zero means nothing. */
603 #define have_sTER 0x01
604 #define have_vpAg 0x02
605 #define before_PLTE 0x10
606 #define before_IDAT 0x20
607 #define after_IDAT 0x40
610 init_callback_info(png_const_infop info_ptr)
612 MEMZERO(user_chunk_data);
613 user_chunk_data.info_ptr = info_ptr;
617 set_location(png_structp png_ptr, struct user_chunk_data *data, int what)
621 if ((data->location[0] & what) || (data->location[1] & what))
622 return 0; /* already have one of these */
624 /* Find where we are (the code below zeros info_ptr to indicate that the
625 * chunks before the first IDAT have been read.)
627 if (data->info_ptr == NULL) /* after IDAT */
628 location = what | after_IDAT;
630 else if (png_get_valid(png_ptr, data->info_ptr, PNG_INFO_PLTE))
631 location = what | before_IDAT;
634 location = what | before_PLTE;
636 if (data->location[0] == 0)
637 data->location[0] = location;
640 data->location[1] = location;
642 return 1; /* handled */
645 static int PNGCBAPI read_user_chunk_callback(png_struct *png_ptr,
646 png_unknown_chunkp chunk)
648 struct user_chunk_data *my_user_chunk_data =
649 (struct user_chunk_data*)png_get_user_chunk_ptr(png_ptr);
651 if (my_user_chunk_data == NULL)
652 png_error(png_ptr, "lost user chunk pointer");
654 /* Return one of the following:
655 * return (-n); chunk had an error
656 * return (0); did not recognize
657 * return (n); success
659 * The unknown chunk structure contains the chunk data:
664 * Note that libpng has already taken care of the CRC handling.
667 if (chunk->name[0] == 115 && chunk->name[1] == 84 && /* s T */
668 chunk->name[2] == 69 && chunk->name[3] == 82) /* E R */
670 /* Found sTER chunk */
671 if (chunk->size != 1)
672 return (-1); /* Error return */
674 if (chunk->data[0] != 0 && chunk->data[0] != 1)
675 return (-1); /* Invalid mode */
677 if (set_location(png_ptr, my_user_chunk_data, have_sTER))
679 my_user_chunk_data->sTER_mode=chunk->data[0];
684 return (0); /* duplicate sTER - give it to libpng */
687 if (chunk->name[0] != 118 || chunk->name[1] != 112 || /* v p */
688 chunk->name[2] != 65 || chunk->name[3] != 103) /* A g */
689 return (0); /* Did not recognize */
691 /* Found ImageMagick vpAg chunk */
693 if (chunk->size != 9)
694 return (-1); /* Error return */
696 if (!set_location(png_ptr, my_user_chunk_data, have_vpAg))
697 return (0); /* duplicate vpAg */
699 my_user_chunk_data->vpAg_width = png_get_uint_31(png_ptr, chunk->data);
700 my_user_chunk_data->vpAg_height = png_get_uint_31(png_ptr, chunk->data + 4);
701 my_user_chunk_data->vpAg_units = chunk->data[8];
706 #ifdef PNG_WRITE_SUPPORTED
708 write_sTER_chunk(png_structp write_ptr)
710 png_byte png_sTER[5] = {115, 84, 69, 82, '\0'};
713 fprintf(STDERR, "\n stereo mode = %d\n", user_chunk_data.sTER_mode);
715 png_write_chunk(write_ptr, png_sTER, &user_chunk_data.sTER_mode, 1);
719 write_vpAg_chunk(png_structp write_ptr)
721 png_byte png_vpAg[5] = {118, 112, 65, 103, '\0'};
723 png_byte vpag_chunk_data[9];
726 fprintf(STDERR, " vpAg = %lu x %lu, units = %d\n",
727 (unsigned long)user_chunk_data.vpAg_width,
728 (unsigned long)user_chunk_data.vpAg_height,
729 user_chunk_data.vpAg_units);
731 png_save_uint_32(vpag_chunk_data, user_chunk_data.vpAg_width);
732 png_save_uint_32(vpag_chunk_data + 4, user_chunk_data.vpAg_height);
733 vpag_chunk_data[8] = user_chunk_data.vpAg_units;
734 png_write_chunk(write_ptr, png_vpAg, vpag_chunk_data, 9);
738 write_chunks(png_structp write_ptr, int location)
742 /* Notice that this preserves the original chunk order, however chunks
743 * intercepted by the callback will be written *after* chunks passed to
744 * libpng. This will actually reverse a pair of sTER chunks or a pair of
745 * vpAg chunks, resulting in an error later. This is not worth worrying
746 * about - the chunks should not be duplicated!
750 if (user_chunk_data.location[i] == (location | have_sTER))
751 write_sTER_chunk(write_ptr);
753 else if (user_chunk_data.location[i] == (location | have_vpAg))
754 write_vpAg_chunk(write_ptr);
757 #endif /* PNG_WRITE_SUPPORTED */
758 #else /* !PNG_READ_USER_CHUNKS_SUPPORTED */
759 # define write_chunks(pp,loc) ((void)0)
761 /* END of code to demonstrate user chunk support */
763 /* START of code to check that libpng has the required text support; this only
764 * checks for the write support because if read support is missing the chunk
765 * will simply not be reported back to pngtest.
767 #ifdef PNG_TEXT_SUPPORTED
769 pngtest_check_text_support(png_const_structp png_ptr, png_textp text_ptr,
774 switch (text_ptr[--num_text].compression)
776 case PNG_TEXT_COMPRESSION_NONE:
779 case PNG_TEXT_COMPRESSION_zTXt:
780 # ifndef PNG_WRITE_zTXt_SUPPORTED
781 ++unsupported_chunks;
785 case PNG_ITXT_COMPRESSION_NONE:
786 case PNG_ITXT_COMPRESSION_zTXt:
787 # ifndef PNG_WRITE_iTXt_SUPPORTED
788 ++unsupported_chunks;
793 /* This is an error */
794 png_error(png_ptr, "invalid text chunk compression field");
800 /* END of code to check that libpng has the required text support */
804 test_one_file(PNG_CONST char *inname, PNG_CONST char *outname)
806 static png_FILE_p fpin;
807 static png_FILE_p fpout; /* "static" prevents setjmp corruption */
808 pngtest_error_parameters error_parameters;
809 png_structp read_ptr;
810 png_infop read_info_ptr, end_info_ptr;
811 #ifdef PNG_WRITE_SUPPORTED
812 png_structp write_ptr;
813 png_infop write_info_ptr;
814 png_infop write_end_info_ptr;
816 png_structp write_ptr = NULL;
817 png_infop write_info_ptr = NULL;
818 png_infop write_end_info_ptr = NULL;
822 png_uint_32 width, height;
824 int bit_depth, color_type;
827 error_parameters.file_name = inname;
829 if ((fpin = fopen(inname, "rb")) == NULL)
831 fprintf(STDERR, "Could not find input file %s\n", inname);
835 if ((fpout = fopen(outname, "wb")) == NULL)
837 fprintf(STDERR, "Could not open output file %s\n", outname);
842 pngtest_debug("Allocating read and write structures");
843 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
845 png_create_read_struct_2(PNG_LIBPNG_VER_STRING, NULL,
846 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
849 png_create_read_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
851 png_set_error_fn(read_ptr, &error_parameters, pngtest_error,
854 #ifdef PNG_WRITE_SUPPORTED
855 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
857 png_create_write_struct_2(PNG_LIBPNG_VER_STRING, NULL,
858 NULL, NULL, NULL, png_debug_malloc, png_debug_free);
861 png_create_write_struct(PNG_LIBPNG_VER_STRING, NULL, NULL, NULL);
863 png_set_error_fn(write_ptr, &error_parameters, pngtest_error,
866 pngtest_debug("Allocating read_info, write_info and end_info structures");
867 read_info_ptr = png_create_info_struct(read_ptr);
868 end_info_ptr = png_create_info_struct(read_ptr);
869 #ifdef PNG_WRITE_SUPPORTED
870 write_info_ptr = png_create_info_struct(write_ptr);
871 write_end_info_ptr = png_create_info_struct(write_ptr);
874 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
875 init_callback_info(read_info_ptr);
876 png_set_read_user_chunk_fn(read_ptr, &user_chunk_data,
877 read_user_chunk_callback);
880 #ifdef PNG_SETJMP_SUPPORTED
881 pngtest_debug("Setting jmpbuf for read struct");
882 if (setjmp(png_jmpbuf(read_ptr)))
884 fprintf(STDERR, "%s -> %s: libpng read error\n", inname, outname);
885 png_free(read_ptr, row_buf);
887 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
888 #ifdef PNG_WRITE_SUPPORTED
889 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
890 png_destroy_write_struct(&write_ptr, &write_info_ptr);
897 #ifdef PNG_WRITE_SUPPORTED
898 pngtest_debug("Setting jmpbuf for write struct");
900 if (setjmp(png_jmpbuf(write_ptr)))
902 fprintf(STDERR, "%s -> %s: libpng write error\n", inname, outname);
903 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
904 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
905 #ifdef PNG_WRITE_SUPPORTED
906 png_destroy_write_struct(&write_ptr, &write_info_ptr);
917 /* Treat png_benign_error() as errors on read */
918 png_set_benign_errors(read_ptr, 0);
920 #ifdef PNG_WRITE_SUPPORTED
921 /* Treat them as errors on write */
922 png_set_benign_errors(write_ptr, 0);
925 /* if strict is not set, then app warnings and errors are treated as
926 * warnings in release builds, but not in unstable builds; this can be
927 * changed with '--relaxed'.
933 /* Allow application (pngtest) errors and warnings to pass */
934 png_set_benign_errors(read_ptr, 1);
936 #ifdef PNG_WRITE_SUPPORTED
937 png_set_benign_errors(write_ptr, 1);
941 pngtest_debug("Initializing input and output streams");
942 #ifdef PNG_STDIO_SUPPORTED
943 png_init_io(read_ptr, fpin);
944 # ifdef PNG_WRITE_SUPPORTED
945 png_init_io(write_ptr, fpout);
948 png_set_read_fn(read_ptr, (png_voidp)fpin, pngtest_read_data);
949 # ifdef PNG_WRITE_SUPPORTED
950 png_set_write_fn(write_ptr, (png_voidp)fpout, pngtest_write_data,
951 # ifdef PNG_WRITE_FLUSH_SUPPORTED
959 if (status_dots_requested == 1)
961 #ifdef PNG_WRITE_SUPPORTED
962 png_set_write_status_fn(write_ptr, write_row_callback);
964 png_set_read_status_fn(read_ptr, read_row_callback);
969 #ifdef PNG_WRITE_SUPPORTED
970 png_set_write_status_fn(write_ptr, NULL);
972 png_set_read_status_fn(read_ptr, NULL);
975 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
979 for (i = 0; i<256; i++)
982 png_set_read_user_transform_fn(read_ptr, count_filters);
985 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
987 png_set_write_user_transform_fn(write_ptr, count_zero_samples);
990 #ifdef PNG_SET_UNKNOWN_CHUNKS_SUPPORTED
991 /* Preserve all the unknown chunks, if possible. If this is disabled then,
992 * even if the png_{get,set}_unknown_chunks stuff is enabled, we can't use
993 * libpng to *save* the unknown chunks on read (because we can't switch the
996 * Notice that if SET_UNKNOWN_CHUNKS is *not* supported read will discard all
997 * unknown chunks and write will write them all.
999 #ifdef PNG_SAVE_UNKNOWN_CHUNKS_SUPPORTED
1000 png_set_keep_unknown_chunks(read_ptr, PNG_HANDLE_CHUNK_ALWAYS,
1003 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1004 png_set_keep_unknown_chunks(write_ptr, PNG_HANDLE_CHUNK_ALWAYS,
1009 pngtest_debug("Reading info struct");
1010 png_read_info(read_ptr, read_info_ptr);
1012 #ifdef PNG_READ_USER_CHUNKS_SUPPORTED
1013 /* This is a bit of a hack; there is no obvious way in the callback function
1014 * to determine that the chunks before the first IDAT have been read, so
1015 * remove the info_ptr (which is only used to determine position relative to
1016 * PLTE) here to indicate that we are after the IDAT.
1018 user_chunk_data.info_ptr = NULL;
1021 pngtest_debug("Transferring info struct");
1023 int interlace_type, compression_type, filter_type;
1025 if (png_get_IHDR(read_ptr, read_info_ptr, &width, &height, &bit_depth,
1026 &color_type, &interlace_type, &compression_type, &filter_type))
1028 png_set_IHDR(write_ptr, write_info_ptr, width, height, bit_depth,
1029 #ifdef PNG_WRITE_INTERLACING_SUPPORTED
1030 color_type, interlace_type, compression_type, filter_type);
1032 color_type, PNG_INTERLACE_NONE, compression_type, filter_type);
1036 #ifdef PNG_FIXED_POINT_SUPPORTED
1037 #ifdef PNG_cHRM_SUPPORTED
1039 png_fixed_point white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
1042 if (png_get_cHRM_fixed(read_ptr, read_info_ptr, &white_x, &white_y,
1043 &red_x, &red_y, &green_x, &green_y, &blue_x, &blue_y))
1045 png_set_cHRM_fixed(write_ptr, write_info_ptr, white_x, white_y, red_x,
1046 red_y, green_x, green_y, blue_x, blue_y);
1050 #ifdef PNG_gAMA_SUPPORTED
1052 png_fixed_point gamma;
1054 if (png_get_gAMA_fixed(read_ptr, read_info_ptr, &gamma))
1055 png_set_gAMA_fixed(write_ptr, write_info_ptr, gamma);
1058 #else /* Use floating point versions */
1059 #ifdef PNG_FLOATING_POINT_SUPPORTED
1060 #ifdef PNG_cHRM_SUPPORTED
1062 double white_x, white_y, red_x, red_y, green_x, green_y, blue_x,
1065 if (png_get_cHRM(read_ptr, read_info_ptr, &white_x, &white_y, &red_x,
1066 &red_y, &green_x, &green_y, &blue_x, &blue_y))
1068 png_set_cHRM(write_ptr, write_info_ptr, white_x, white_y, red_x,
1069 red_y, green_x, green_y, blue_x, blue_y);
1073 #ifdef PNG_gAMA_SUPPORTED
1077 if (png_get_gAMA(read_ptr, read_info_ptr, &gamma))
1078 png_set_gAMA(write_ptr, write_info_ptr, gamma);
1081 #endif /* Floating point */
1082 #endif /* Fixed point */
1083 #ifdef PNG_iCCP_SUPPORTED
1087 png_uint_32 proflen;
1088 int compression_type;
1090 if (png_get_iCCP(read_ptr, read_info_ptr, &name, &compression_type,
1091 &profile, &proflen))
1093 png_set_iCCP(write_ptr, write_info_ptr, name, compression_type,
1098 #ifdef PNG_sRGB_SUPPORTED
1102 if (png_get_sRGB(read_ptr, read_info_ptr, &intent))
1103 png_set_sRGB(write_ptr, write_info_ptr, intent);
1110 if (png_get_PLTE(read_ptr, read_info_ptr, &palette, &num_palette))
1111 png_set_PLTE(write_ptr, write_info_ptr, palette, num_palette);
1113 #ifdef PNG_bKGD_SUPPORTED
1115 png_color_16p background;
1117 if (png_get_bKGD(read_ptr, read_info_ptr, &background))
1119 png_set_bKGD(write_ptr, write_info_ptr, background);
1123 #ifdef PNG_hIST_SUPPORTED
1127 if (png_get_hIST(read_ptr, read_info_ptr, &hist))
1128 png_set_hIST(write_ptr, write_info_ptr, hist);
1131 #ifdef PNG_oFFs_SUPPORTED
1133 png_int_32 offset_x, offset_y;
1136 if (png_get_oFFs(read_ptr, read_info_ptr, &offset_x, &offset_y,
1139 png_set_oFFs(write_ptr, write_info_ptr, offset_x, offset_y, unit_type);
1143 #ifdef PNG_pCAL_SUPPORTED
1145 png_charp purpose, units;
1150 if (png_get_pCAL(read_ptr, read_info_ptr, &purpose, &X0, &X1, &type,
1151 &nparams, &units, ¶ms))
1153 png_set_pCAL(write_ptr, write_info_ptr, purpose, X0, X1, type,
1154 nparams, units, params);
1158 #ifdef PNG_pHYs_SUPPORTED
1160 png_uint_32 res_x, res_y;
1163 if (png_get_pHYs(read_ptr, read_info_ptr, &res_x, &res_y, &unit_type))
1164 png_set_pHYs(write_ptr, write_info_ptr, res_x, res_y, unit_type);
1167 #ifdef PNG_sBIT_SUPPORTED
1169 png_color_8p sig_bit;
1171 if (png_get_sBIT(read_ptr, read_info_ptr, &sig_bit))
1172 png_set_sBIT(write_ptr, write_info_ptr, sig_bit);
1175 #ifdef PNG_sCAL_SUPPORTED
1176 #ifdef PNG_FLOATING_POINT_SUPPORTED
1179 double scal_width, scal_height;
1181 if (png_get_sCAL(read_ptr, read_info_ptr, &unit, &scal_width,
1184 png_set_sCAL(write_ptr, write_info_ptr, unit, scal_width, scal_height);
1188 #ifdef PNG_FIXED_POINT_SUPPORTED
1191 png_charp scal_width, scal_height;
1193 if (png_get_sCAL_s(read_ptr, read_info_ptr, &unit, &scal_width,
1196 png_set_sCAL_s(write_ptr, write_info_ptr, unit, scal_width,
1203 #ifdef PNG_TEXT_SUPPORTED
1208 if (png_get_text(read_ptr, read_info_ptr, &text_ptr, &num_text) > 0)
1210 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
1212 pngtest_check_text_support(read_ptr, text_ptr, num_text);
1219 for (i=0; i<num_text; i++)
1221 printf(" Text compression[%d]=%d\n",
1222 i, text_ptr[i].compression);
1226 png_set_text(write_ptr, write_info_ptr, text_ptr, num_text);
1230 #ifdef PNG_tIME_SUPPORTED
1234 if (png_get_tIME(read_ptr, read_info_ptr, &mod_time))
1236 png_set_tIME(write_ptr, write_info_ptr, mod_time);
1237 #ifdef PNG_TIME_RFC1123_SUPPORTED
1238 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time))
1239 tIME_string[(sizeof tIME_string) - 1] = '\0';
1243 strncpy(tIME_string, "*** invalid time ***", (sizeof tIME_string));
1244 tIME_string[(sizeof tIME_string) - 1] = '\0';
1247 tIME_chunk_present++;
1248 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1252 #ifdef PNG_tRNS_SUPPORTED
1254 png_bytep trans_alpha;
1256 png_color_16p trans_color;
1258 if (png_get_tRNS(read_ptr, read_info_ptr, &trans_alpha, &num_trans,
1261 int sample_max = (1 << bit_depth);
1262 /* libpng doesn't reject a tRNS chunk with out-of-range samples */
1263 if (!((color_type == PNG_COLOR_TYPE_GRAY &&
1264 (int)trans_color->gray > sample_max) ||
1265 (color_type == PNG_COLOR_TYPE_RGB &&
1266 ((int)trans_color->red > sample_max ||
1267 (int)trans_color->green > sample_max ||
1268 (int)trans_color->blue > sample_max))))
1269 png_set_tRNS(write_ptr, write_info_ptr, trans_alpha, num_trans,
1274 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1276 png_unknown_chunkp unknowns;
1277 int num_unknowns = png_get_unknown_chunks(read_ptr, read_info_ptr,
1282 png_set_unknown_chunks(write_ptr, write_info_ptr, unknowns,
1284 #if PNG_LIBPNG_VER < 10600
1285 /* Copy the locations from the read_info_ptr. The automatically
1286 * generated locations in write_end_info_ptr are wrong prior to 1.6.0
1287 * because they are reset from the write pointer (removed in 1.6.0).
1291 for (i = 0; i < num_unknowns; i++)
1292 png_set_unknown_chunk_location(write_ptr, write_info_ptr, i,
1293 unknowns[i].location);
1300 #ifdef PNG_WRITE_SUPPORTED
1301 pngtest_debug("Writing info struct");
1303 /* Write the info in two steps so that if we write the 'unknown' chunks here
1304 * they go to the correct place.
1306 png_write_info_before_PLTE(write_ptr, write_info_ptr);
1308 write_chunks(write_ptr, before_PLTE); /* before PLTE */
1310 png_write_info(write_ptr, write_info_ptr);
1312 write_chunks(write_ptr, before_IDAT); /* after PLTE */
1315 #ifdef SINGLE_ROWBUF_ALLOC
1316 pngtest_debug("Allocating row buffer...");
1317 row_buf = (png_bytep)png_malloc(read_ptr,
1318 png_get_rowbytes(read_ptr, read_info_ptr));
1320 pngtest_debug1("\t0x%08lx", (unsigned long)row_buf);
1321 #endif /* SINGLE_ROWBUF_ALLOC */
1322 pngtest_debug("Writing row data");
1324 #if defined(PNG_READ_INTERLACING_SUPPORTED) || \
1325 defined(PNG_WRITE_INTERLACING_SUPPORTED)
1326 num_pass = png_set_interlace_handling(read_ptr);
1327 # ifdef PNG_WRITE_SUPPORTED
1328 png_set_interlace_handling(write_ptr);
1334 #ifdef PNGTEST_TIMING
1335 t_stop = (float)clock();
1336 t_misc += (t_stop - t_start);
1339 for (pass = 0; pass < num_pass; pass++)
1341 pngtest_debug1("Writing row data for pass %d", pass);
1342 for (y = 0; y < height; y++)
1344 #ifndef SINGLE_ROWBUF_ALLOC
1345 pngtest_debug2("Allocating row buffer (pass %d, y = %u)...", pass, y);
1346 row_buf = (png_bytep)png_malloc(read_ptr,
1347 png_get_rowbytes(read_ptr, read_info_ptr));
1349 pngtest_debug2("\t0x%08lx (%u bytes)", (unsigned long)row_buf,
1350 png_get_rowbytes(read_ptr, read_info_ptr));
1352 #endif /* !SINGLE_ROWBUF_ALLOC */
1353 png_read_rows(read_ptr, (png_bytepp)&row_buf, NULL, 1);
1355 #ifdef PNG_WRITE_SUPPORTED
1356 #ifdef PNGTEST_TIMING
1357 t_stop = (float)clock();
1358 t_decode += (t_stop - t_start);
1361 png_write_rows(write_ptr, (png_bytepp)&row_buf, 1);
1362 #ifdef PNGTEST_TIMING
1363 t_stop = (float)clock();
1364 t_encode += (t_stop - t_start);
1367 #endif /* PNG_WRITE_SUPPORTED */
1369 #ifndef SINGLE_ROWBUF_ALLOC
1370 pngtest_debug2("Freeing row buffer (pass %d, y = %u)", pass, y);
1371 png_free(read_ptr, row_buf);
1373 #endif /* !SINGLE_ROWBUF_ALLOC */
1377 #ifdef PNG_READ_UNKNOWN_CHUNKS_SUPPORTED
1378 png_free_data(read_ptr, read_info_ptr, PNG_FREE_UNKN, -1);
1380 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1381 png_free_data(write_ptr, write_info_ptr, PNG_FREE_UNKN, -1);
1384 pngtest_debug("Reading and writing end_info data");
1386 png_read_end(read_ptr, end_info_ptr);
1387 #ifdef PNG_TEXT_SUPPORTED
1392 if (png_get_text(read_ptr, end_info_ptr, &text_ptr, &num_text) > 0)
1394 pngtest_debug1("Handling %d iTXt/tEXt/zTXt chunks", num_text);
1396 pngtest_check_text_support(read_ptr, text_ptr, num_text);
1403 for (i=0; i<num_text; i++)
1405 printf(" Text compression[%d]=%d\n",
1406 i, text_ptr[i].compression);
1410 png_set_text(write_ptr, write_end_info_ptr, text_ptr, num_text);
1414 #ifdef PNG_tIME_SUPPORTED
1418 if (png_get_tIME(read_ptr, end_info_ptr, &mod_time))
1420 png_set_tIME(write_ptr, write_end_info_ptr, mod_time);
1421 #ifdef PNG_TIME_RFC1123_SUPPORTED
1422 if (png_convert_to_rfc1123_buffer(tIME_string, mod_time))
1423 tIME_string[(sizeof tIME_string) - 1] = '\0';
1427 strncpy(tIME_string, "*** invalid time ***", sizeof tIME_string);
1428 tIME_string[(sizeof tIME_string)-1] = '\0';
1431 tIME_chunk_present++;
1432 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1436 #ifdef PNG_WRITE_UNKNOWN_CHUNKS_SUPPORTED
1438 png_unknown_chunkp unknowns;
1439 int num_unknowns = png_get_unknown_chunks(read_ptr, end_info_ptr,
1444 png_set_unknown_chunks(write_ptr, write_end_info_ptr, unknowns,
1446 #if PNG_LIBPNG_VER < 10600
1447 /* Copy the locations from the read_info_ptr. The automatically
1448 * generated locations in write_end_info_ptr are wrong prior to 1.6.0
1449 * because they are reset from the write pointer (removed in 1.6.0).
1453 for (i = 0; i < num_unknowns; i++)
1454 png_set_unknown_chunk_location(write_ptr, write_end_info_ptr, i,
1455 unknowns[i].location);
1462 #ifdef PNG_WRITE_SUPPORTED
1463 #ifdef PNG_WRITE_CUSTOMIZE_ZTXT_COMPRESSION_SUPPORTED
1464 /* Normally one would use Z_DEFAULT_STRATEGY for text compression.
1465 * This is here just to make pngtest replicate the results from libpng
1466 * versions prior to 1.5.4, and to test this new API.
1468 png_set_text_compression_strategy(write_ptr, Z_FILTERED);
1471 /* When the unknown vpAg/sTER chunks are written by pngtest the only way to
1472 * do it is to write them *before* calling png_write_end. When unknown
1473 * chunks are written by libpng, however, they are written just before IEND.
1474 * There seems to be no way round this, however vpAg/sTER are not expected
1477 write_chunks(write_ptr, after_IDAT);
1479 png_write_end(write_ptr, write_end_info_ptr);
1482 #ifdef PNG_EASY_ACCESS_SUPPORTED
1485 png_uint_32 iwidth, iheight;
1486 iwidth = png_get_image_width(write_ptr, write_info_ptr);
1487 iheight = png_get_image_height(write_ptr, write_info_ptr);
1488 fprintf(STDERR, "\n Image width = %lu, height = %lu\n",
1489 (unsigned long)iwidth, (unsigned long)iheight);
1493 pngtest_debug("Destroying data structs");
1494 #ifdef SINGLE_ROWBUF_ALLOC
1495 pngtest_debug("destroying row_buf for read_ptr");
1496 png_free(read_ptr, row_buf);
1498 #endif /* SINGLE_ROWBUF_ALLOC */
1499 pngtest_debug("destroying read_ptr, read_info_ptr, end_info_ptr");
1500 png_destroy_read_struct(&read_ptr, &read_info_ptr, &end_info_ptr);
1501 #ifdef PNG_WRITE_SUPPORTED
1502 pngtest_debug("destroying write_end_info_ptr");
1503 png_destroy_info_struct(write_ptr, &write_end_info_ptr);
1504 pngtest_debug("destroying write_ptr, write_info_ptr");
1505 png_destroy_write_struct(&write_ptr, &write_info_ptr);
1507 pngtest_debug("Destruction complete.");
1512 /* Summarize any warnings or errors and in 'strict' mode fail the test.
1513 * Unsupported chunks can result in warnings, in that case ignore the strict
1514 * setting, otherwise fail the test on warnings as well as errors.
1516 if (error_count > 0)
1518 /* We don't really expect to get here because of the setjmp handling
1519 * above, but this is safe.
1521 fprintf(STDERR, "\n %s: %d libpng errors found (%d warnings)",
1522 inname, error_count, warning_count);
1528 # ifdef PNG_WRITE_SUPPORTED
1529 /* If there we no write support nothing was written! */
1530 else if (unsupported_chunks > 0)
1532 fprintf(STDERR, "\n %s: unsupported chunks (%d)%s",
1533 inname, unsupported_chunks, strict ? ": IGNORED --strict!" : "");
1537 else if (warning_count > 0)
1539 fprintf(STDERR, "\n %s: %d libpng warnings found",
1540 inname, warning_count);
1546 pngtest_debug("Opening files for comparison");
1547 if ((fpin = fopen(inname, "rb")) == NULL)
1549 fprintf(STDERR, "Could not find file %s\n", inname);
1553 if ((fpout = fopen(outname, "rb")) == NULL)
1555 fprintf(STDERR, "Could not find file %s\n", outname);
1560 #ifdef PNG_WRITE_SUPPORTED /* else nothing was written */
1562 int wrote_question = 0;
1566 png_size_t num_in, num_out;
1567 char inbuf[256], outbuf[256];
1570 num_in = fread(inbuf, 1, sizeof inbuf, fpin);
1571 num_out = fread(outbuf, 1, sizeof outbuf, fpout);
1573 if (num_in != num_out)
1575 fprintf(STDERR, "\nFiles %s and %s are of a different size\n",
1578 if (wrote_question == 0 && unsupported_chunks == 0)
1581 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1582 inname, PNG_ZBUF_SIZE);
1584 "\n filtering heuristic (libpng default), compression");
1586 " level (zlib default),\n and zlib version (%s)?\n\n",
1594 if (strict != 0 && unsupported_chunks == 0)
1604 if (memcmp(inbuf, outbuf, num_in))
1606 fprintf(STDERR, "\nFiles %s and %s are different\n", inname,
1609 if (wrote_question == 0 && unsupported_chunks == 0)
1612 " Was %s written with the same maximum IDAT chunk size (%d bytes),",
1613 inname, PNG_ZBUF_SIZE);
1615 "\n filtering heuristic (libpng default), compression");
1617 " level (zlib default),\n and zlib version (%s)?\n\n",
1625 /* NOTE: the unsupported_chunks escape is permitted here because
1626 * unsupported text chunk compression will result in the compression
1627 * mode being changed (to NONE) yet, in the test case, the result
1628 * can be exactly the same size!
1630 if (strict != 0 && unsupported_chunks == 0)
1638 #endif /* PNG_WRITE_SUPPORTED */
1646 /* Input and output filenames */
1648 static PNG_CONST char *inname = "pngtest/png";
1649 static PNG_CONST char *outname = "pngout/png";
1651 static PNG_CONST char *inname = "pngtest.png";
1652 static PNG_CONST char *outname = "pngout.png";
1656 main(int argc, char *argv[])
1661 fprintf(STDERR, "\n Testing libpng version %s\n", PNG_LIBPNG_VER_STRING);
1662 fprintf(STDERR, " with zlib version %s\n", ZLIB_VERSION);
1663 fprintf(STDERR, "%s", png_get_copyright(NULL));
1664 /* Show the version of libpng used in building the library */
1665 fprintf(STDERR, " library (%lu):%s",
1666 (unsigned long)png_access_version_number(),
1667 png_get_header_version(NULL));
1669 /* Show the version of libpng used in building the application */
1670 fprintf(STDERR, " pngtest (%lu):%s", (unsigned long)PNG_LIBPNG_VER,
1671 PNG_HEADER_VERSION_STRING);
1673 /* Do some consistency checking on the memory allocation settings, I'm
1674 * not sure this matters, but it is nice to know, the first of these
1675 * tests should be impossible because of the way the macros are set
1678 #if defined(MAXSEG_64K) && !defined(PNG_MAX_MALLOC_64K)
1679 fprintf(STDERR, " NOTE: Zlib compiled for max 64k, libpng not\n");
1681 /* I think the following can happen. */
1682 #if !defined(MAXSEG_64K) && defined(PNG_MAX_MALLOC_64K)
1683 fprintf(STDERR, " NOTE: libpng compiled for max 64k, zlib not\n");
1686 if (strcmp(png_libpng_ver, PNG_LIBPNG_VER_STRING))
1689 "Warning: versions are different between png.h and png.c\n");
1690 fprintf(STDERR, " png.h version: %s\n", PNG_LIBPNG_VER_STRING);
1691 fprintf(STDERR, " png.c version: %s\n\n", png_libpng_ver);
1697 if (strcmp(argv[1], "-m") == 0)
1700 status_dots_requested = 0;
1703 else if (strcmp(argv[1], "-mv") == 0 ||
1704 strcmp(argv[1], "-vm") == 0 )
1708 status_dots_requested = 1;
1711 else if (strcmp(argv[1], "-v") == 0)
1714 status_dots_requested = 1;
1718 else if (strcmp(argv[1], "--strict") == 0)
1720 status_dots_requested = 0;
1727 else if (strcmp(argv[1], "--relaxed") == 0)
1729 status_dots_requested = 0;
1739 status_dots_requested = 0;
1743 if (!multiple && argc == 3 + verbose)
1744 outname = argv[2 + verbose];
1746 if ((!multiple && argc > 3 + verbose) || (multiple && argc < 2))
1749 "usage: %s [infile.png] [outfile.png]\n\t%s -m {infile.png}\n",
1752 " reads/writes one PNG file (without -m) or multiple files (-m)\n");
1754 " with -m %s is used as a temporary file\n", outname);
1761 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1762 int allocation_now = current_allocation;
1764 for (i=2; i<argc; ++i)
1767 fprintf(STDERR, "\n Testing %s:", argv[i]);
1768 kerror = test_one_file(argv[i], outname);
1771 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1774 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1775 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1776 (unsigned long)zero_samples);
1778 fprintf(STDERR, " PASS\n");
1780 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1781 for (k = 0; k<256; k++)
1782 if (filters_used[k])
1783 fprintf(STDERR, " Filter %d was used %lu times\n",
1784 k, (unsigned long)filters_used[k]);
1786 #ifdef PNG_TIME_RFC1123_SUPPORTED
1787 if (tIME_chunk_present != 0)
1788 fprintf(STDERR, " tIME = %s\n", tIME_string);
1790 tIME_chunk_present = 0;
1791 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1796 fprintf(STDERR, " FAIL\n");
1799 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1800 if (allocation_now != current_allocation)
1801 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1802 current_allocation - allocation_now);
1804 if (current_allocation != 0)
1806 memory_infop pinfo = pinformation;
1808 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1809 current_allocation);
1811 while (pinfo != NULL)
1813 fprintf(STDERR, " %lu bytes at %x\n",
1814 (unsigned long)pinfo->size,
1815 (unsigned int)pinfo->pointer);
1816 pinfo = pinfo->next;
1821 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1822 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1823 current_allocation);
1824 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1825 maximum_allocation);
1826 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1828 fprintf(STDERR, " Number of allocations: %10d\n",
1836 for (i = 0; i<3; ++i)
1839 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1840 int allocation_now = current_allocation;
1843 status_dots_requested = 1;
1845 else if (verbose == 0)
1846 status_dots_requested = 0;
1848 if (i == 0 || verbose == 1 || ierror != 0)
1849 fprintf(STDERR, "\n Testing %s:", inname);
1851 kerror = test_one_file(inname, outname);
1855 if (verbose == 1 || i == 2)
1857 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1860 #ifdef PNG_WRITE_USER_TRANSFORM_SUPPORTED
1861 fprintf(STDERR, "\n PASS (%lu zero samples)\n",
1862 (unsigned long)zero_samples);
1864 fprintf(STDERR, " PASS\n");
1866 #ifdef PNG_READ_USER_TRANSFORM_SUPPORTED
1867 for (k = 0; k<256; k++)
1868 if (filters_used[k])
1869 fprintf(STDERR, " Filter %d was used %lu times\n",
1870 k, (unsigned long)filters_used[k]);
1872 #ifdef PNG_TIME_RFC1123_SUPPORTED
1873 if (tIME_chunk_present != 0)
1874 fprintf(STDERR, " tIME = %s\n", tIME_string);
1875 #endif /* PNG_TIME_RFC1123_SUPPORTED */
1881 if (verbose == 0 && i != 2)
1882 fprintf(STDERR, "\n Testing %s:", inname);
1884 fprintf(STDERR, " FAIL\n");
1887 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1888 if (allocation_now != current_allocation)
1889 fprintf(STDERR, "MEMORY ERROR: %d bytes lost\n",
1890 current_allocation - allocation_now);
1892 if (current_allocation != 0)
1894 memory_infop pinfo = pinformation;
1896 fprintf(STDERR, "MEMORY ERROR: %d bytes still allocated\n",
1897 current_allocation);
1899 while (pinfo != NULL)
1901 fprintf(STDERR, " %lu bytes at %x\n",
1902 (unsigned long)pinfo->size, (unsigned int)pinfo->pointer);
1903 pinfo = pinfo->next;
1908 #if defined(PNG_USER_MEM_SUPPORTED) && PNG_DEBUG
1909 fprintf(STDERR, " Current memory allocation: %10d bytes\n",
1910 current_allocation);
1911 fprintf(STDERR, " Maximum memory allocation: %10d bytes\n",
1912 maximum_allocation);
1913 fprintf(STDERR, " Total memory allocation: %10d bytes\n",
1915 fprintf(STDERR, " Number of allocations: %10d\n",
1920 #ifdef PNGTEST_TIMING
1921 t_stop = (float)clock();
1922 t_misc += (t_stop - t_start);
1924 fprintf(STDERR, " CPU time used = %.3f seconds",
1925 (t_misc+t_decode+t_encode)/(float)CLOCKS_PER_SEC);
1926 fprintf(STDERR, " (decoding %.3f,\n",
1927 t_decode/(float)CLOCKS_PER_SEC);
1928 fprintf(STDERR, " encoding %.3f ,",
1929 t_encode/(float)CLOCKS_PER_SEC);
1930 fprintf(STDERR, " other %.3f seconds)\n\n",
1931 t_misc/(float)CLOCKS_PER_SEC);
1935 fprintf(STDERR, " libpng passes test\n");
1938 fprintf(STDERR, " libpng FAILS test\n");
1940 return (int)(ierror != 0);
1947 " test ignored because libpng was not built with read support\n");
1952 /* Generate a compiler error if there is an old png.h in the search path. */
1953 typedef png_libpng_version_1_6_1 Your_png_h_is_not_version_1_6_1;