2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
4 * This file is part of FFmpeg.
6 * FFmpeg is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
9 * version 2.1 of the License, or (at your option) any later version.
11 * FFmpeg is distributed in the hope that it will be useful,
12 * but WITHOUT ANY WARRANTY; without even the implied warranty of
13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
14 * Lesser General Public License for more details.
16 * You should have received a copy of the GNU Lesser General Public
17 * License along with FFmpeg; if not, write to the Free Software
18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
23 * common internal api header.
26 #ifndef FFMPEG_INTERNAL_H
27 #define FFMPEG_INTERNAL_H
29 #if !defined(DEBUG) && !defined(NDEBUG)
37 #ifndef attribute_align_arg
38 #if defined(__GNUC__) && (__GNUC__ > 4 || __GNUC__ == 4 && __GNUC_MINOR__>1)
39 # define attribute_align_arg __attribute__((force_align_arg_pointer))
41 # define attribute_align_arg
45 #ifndef attribute_used
46 #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
47 # define attribute_used __attribute__((used))
49 # define attribute_used
53 /* Use Apple-specific AltiVec syntax for vector declarations when necessary. */
61 #define M_PI 3.14159265358979323846
65 #define INT16_MIN (-0x7fff-1)
69 #define INT16_MAX 0x7fff
73 #define INT32_MIN (-0x7fffffff-1)
77 #define INT32_MAX 0x7fffffff
81 #define UINT32_MAX 0xffffffff
85 #define INT64_MIN (-0x7fffffffffffffffLL-1)
89 #define INT64_MAX INT64_C(9223372036854775807)
93 #define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
97 # if INT_MAX != 2147483647
104 #if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
109 #include "intreadwrite.h"
113 # define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
116 #ifdef USE_FASTMEMCPY
117 # include "libvo/fastmemcpy.h"
118 # define memcpy(a,b,c) fast_memcpy(a,b,c)
121 // Use rip-relative addressing if compiling PIC code on x86-64.
122 #if defined(__MINGW32__) || defined(__CYGWIN__) || defined(__DJGPP__) || \
123 defined(__OS2__) || defined(__APPLE__) || \
124 (defined (__OpenBSD__) && !defined(__ELF__))
125 # if defined(ARCH_X86_64) && defined(PIC)
126 # define MANGLE(a) "_" #a"(%%rip)"
128 # define MANGLE(a) "_" #a
130 #elif defined(ARCH_X86_64) && defined(PIC)
131 # define MANGLE(a) #a"(%%rip)"
133 # define MANGLE(a) #a
140 # define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
142 # define dprintf(pctx, ...)
145 #define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
149 extern const uint32_t ff_inverse[256];
151 #if defined(ARCH_X86)
152 # define FASTDIV(a,b) \
157 :"=d"(ret),"=a"(dmy)\
158 :"1"(a),"g"(ff_inverse[b])\
162 #elif defined(ARCH_ARMV4L)
163 # define FASTDIV(a,b) \
167 "umull %1, %0, %2, %3"\
168 :"=&r"(ret),"=&r"(dmy)\
169 :"r"(a),"r"(ff_inverse[b])\
173 #elif defined(CONFIG_FASTDIV)
174 # define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32))
176 # define FASTDIV(a,b) ((a)/(b))
179 extern const uint8_t ff_sqrt_tab[256];
181 static inline int av_log2_16bit(unsigned int v);
183 static inline unsigned int ff_sqrt(unsigned int a)
187 if(a<255) return (ff_sqrt_tab[a+1]-1)>>4;
188 else if(a<(1<<12)) b= ff_sqrt_tab[a>>4 ]>>2;
190 else if(a<(1<<14)) b= ff_sqrt_tab[a>>6 ]>>1;
191 else if(a<(1<<16)) b= ff_sqrt_tab[a>>8 ] ;
194 int s= av_log2_16bit(a>>16)>>1;
195 unsigned int c= a>>(s+2);
196 b= ff_sqrt_tab[c>>(s+8)];
197 b= FASTDIV(c,b) + (b<<s);
203 #if defined(ARCH_X86)
204 #define MASK_ABS(mask, level)\
209 : "+a" (level), "=&d" (mask)\
212 #define MASK_ABS(mask, level)\
214 level= (level^mask)-mask;
218 #define COPY3_IF_LT(x,y,a,b,c,d)\
224 : "+&r" (x), "+&r" (a), "+r" (c)\
225 : "r" (y), "r" (b), "r" (d)\
228 #define COPY3_IF_LT(x,y,a,b,c,d)\
236 /* avoid usage of various functions */
238 #define malloc please_use_av_malloc
240 #define free please_use_av_free
242 #define realloc please_use_av_realloc
244 #define time time_is_forbidden_due_to_security_issues
246 #define rand rand_is_forbidden_due_to_state_trashing_use_av_random
248 #define srand srand_is_forbidden_due_to_state_trashing_use_av_init_random
250 #define random random_is_forbidden_due_to_state_trashing_use_av_random
252 #define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
254 #define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
256 #define exit exit_is_forbidden
257 #if !(defined(LIBAVFORMAT_BUILD) || defined(FFMPEG_FRAMEHOOK_H))
259 #define printf please_use_av_log
261 #define fprintf please_use_av_log
263 #define puts please_use_av_log
265 #define perror please_use_av_log_instead_of_perror
268 #define CHECKED_ALLOCZ(p, size)\
270 p= av_mallocz(size);\
271 if(p==NULL && (size)!=0){\
272 av_log(NULL, AV_LOG_ERROR, "Cannot allocate memory.");\
278 static av_always_inline long long llrint(double x)
282 #endif /* HAVE_LLRINT */
285 static av_always_inline long int lrint(double x)
289 #endif /* HAVE_LRINT */
292 static av_always_inline long int lrintf(float x)
294 return (int)(rint(x));
296 #endif /* HAVE_LRINTF */
299 static av_always_inline double round(double x)
301 return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
303 #endif /* HAVE_ROUND */
306 static av_always_inline float roundf(float x)
308 return (x > 0) ? floor(x + 0.5) : ceil(x - 0.5);
310 #endif /* HAVE_ROUNDF */
312 #endif /* FFMPEG_INTERNAL_H */