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.
29 #ifndef attribute_used
30 #if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
31 # define attribute_used __attribute__((used))
33 # define attribute_used
37 #ifndef attribute_unused
39 # define attribute_unused __attribute__((unused))
41 # define attribute_unused
46 #define M_PI 3.14159265358979323846
50 #define INT16_MIN (-0x7fff-1)
54 #define INT16_MAX 0x7fff
58 #define INT32_MIN (-0x7fffffff-1)
62 #define INT32_MAX 0x7fffffff
66 #define UINT32_MAX 0xffffffff
70 #define INT64_MIN (-0x7fffffffffffffffLL-1)
74 #define INT64_MAX INT64_C(9223372036854775807)
78 #define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
82 # if INT_MAX != 2147483647
89 #if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
93 #include "intreadwrite.h"
98 # define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
106 # define snprintf _snprintf
107 # define vsnprintf _vsnprintf
109 /* __MINGW32__ end */
110 #elif defined (CONFIG_OS2)
115 #endif /* !__MINGW32__ && CONFIG_OS2 */
117 #ifdef USE_FASTMEMCPY
118 # include "libvo/fastmemcpy.h"
121 // Use rip-relative addressing if compiling PIC code on x86-64.
122 #if defined(__MINGW32__) || defined(__CYGWIN__) || \
123 defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
124 # if defined(ARCH_X86_64) && defined(PIC)
125 # define MANGLE(a) "_" #a"(%%rip)"
127 # define MANGLE(a) "_" #a
130 # if defined(ARCH_X86_64) && defined(PIC)
131 # define MANGLE(a) #a"(%%rip)"
132 # elif defined(CONFIG_DARWIN)
133 # define MANGLE(a) "_" #a
135 # define MANGLE(a) #a
141 #if !defined(DEBUG) && !defined(NDEBUG)
148 # define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
150 # define dprintf(pctx, ...)
153 #define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
157 extern const uint32_t ff_inverse[256];
159 #if defined(ARCH_X86)
160 # define FASTDIV(a,b) \
165 :"=d"(ret),"=a"(dmy)\
166 :"1"(a),"g"(ff_inverse[b])\
170 #elif defined(ARCH_ARMV4L)
171 # define FASTDIV(a,b) \
175 "umull %1, %0, %2, %3"\
176 :"=&r"(ret),"=&r"(dmy)\
177 :"r"(a),"r"(ff_inverse[b])\
181 #elif defined(CONFIG_FASTDIV)
182 # define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32))
184 # define FASTDIV(a,b) ((a)/(b))
187 extern const uint8_t ff_sqrt_tab[128];
189 static inline int ff_sqrt(int a)
195 if(a<128) return ff_sqrt_tab[a];
197 for(s=15; s>=0; s--){
198 int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
207 #if defined(ARCH_X86)
208 #define MASK_ABS(mask, level)\
213 : "+a" (level), "=&d" (mask)\
216 #define MASK_ABS(mask, level)\
218 level= (level^mask)-mask;
222 #define COPY3_IF_LT(x,y,a,b,c,d)\
228 : "+&r" (x), "+&r" (a), "+r" (c)\
229 : "r" (y), "r" (b), "r" (d)\
232 #define COPY3_IF_LT(x,y,a,b,c,d)\
240 /* avoid usage of various functions */
241 #define malloc please_use_av_malloc
242 #define free please_use_av_free
243 #define realloc please_use_av_realloc
244 #define time time_is_forbidden_due_to_security_issues
245 #define rand rand_is_forbidden_due_to_state_trashing
246 #define srand srand_is_forbidden_due_to_state_trashing
247 #define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
248 #define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat
249 #define exit exit_is_forbidden
250 #if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
251 #define printf please_use_av_log
252 #define fprintf please_use_av_log
255 #define CHECKED_ALLOCZ(p, size)\
257 p= av_mallocz(size);\
258 if(p==NULL && (size)!=0){\
265 /* XXX: add ISOC specific test to avoid specific BSD testing. */
266 /* better than nothing implementation. */
267 /* btw, rintf() is existing on fbsd too -- alex */
268 static av_always_inline long int lrintf(float x)
275 : "=m" (i) : "t" (x) : "st"
279 /* XXX: incorrect, but make it compile */
280 return (int)(x + (x < 0 ? -0.5 : 0.5));
281 # endif /* ARCH_X86_32 */
283 return (int)(rint(x));
284 #endif /* __MINGW32__ */
286 #endif /* HAVE_LRINTF */
288 #endif /* INTERNAL_H */