remove codec_info_duration/nb_frames from AVStream
[libav.git] / libavutil / internal.h
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1/*
2 * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at>
3 *
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4 * This file is part of FFmpeg.
5 *
6 * FFmpeg is free software; you can redistribute it and/or
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7 * modify it under the terms of the GNU Lesser General Public
8 * License as published by the Free Software Foundation; either
b78e7197 9 * version 2.1 of the License, or (at your option) any later version.
04d7f601 10 *
b78e7197 11 * FFmpeg is distributed in the hope that it will be useful,
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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.
15 *
16 * You should have received a copy of the GNU Lesser General Public
b78e7197 17 * License along with FFmpeg; if not, write to the Free Software
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18 * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
19 */
20
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21/**
22 * @file internal.h
23 * common internal api header.
24 */
25
26#ifndef INTERNAL_H
27#define INTERNAL_H
28
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29#ifndef attribute_used
30#if defined(__GNUC__) && (__GNUC__ > 3 || __GNUC__ == 3 && __GNUC_MINOR__ > 0)
31# define attribute_used __attribute__((used))
32#else
33# define attribute_used
34#endif
35#endif
36
37#ifndef attribute_unused
40628be0 38#if defined(__GNUC__)
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39# define attribute_unused __attribute__((unused))
40#else
41# define attribute_unused
42#endif
43#endif
44
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45#ifndef M_PI
46#define M_PI 3.14159265358979323846
47#endif
48
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49#ifndef INT16_MIN
50#define INT16_MIN (-0x7fff-1)
51#endif
52
53#ifndef INT16_MAX
54#define INT16_MAX 0x7fff
55#endif
56
57#ifndef INT32_MIN
58#define INT32_MIN (-0x7fffffff-1)
59#endif
60
61#ifndef INT32_MAX
62#define INT32_MAX 0x7fffffff
63#endif
64
65#ifndef UINT32_MAX
66#define UINT32_MAX 0xffffffff
67#endif
68
69#ifndef INT64_MIN
70#define INT64_MIN (-0x7fffffffffffffffLL-1)
71#endif
72
73#ifndef INT64_MAX
8da9266c 74#define INT64_MAX INT64_C(9223372036854775807)
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75#endif
76
77#ifndef UINT64_MAX
8da9266c 78#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
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79#endif
80
81#ifndef INT_BIT
82# if INT_MAX != 2147483647
83# define INT_BIT 64
84# else
85# define INT_BIT 32
86# endif
87#endif
88
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89#if ( defined(__PIC__) || defined(__pic__) ) && ! defined(PIC)
90# define PIC
91#endif
92
cf1e119b 93#include "intreadwrite.h"
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94#include "bswap.h"
95
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96#include <stddef.h>
97#ifndef offsetof
635eb0cc 98# define offsetof(T,F) ((unsigned int)((char *)&((T *)0)->F))
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99#endif
100
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101#ifdef __MINGW32__
102# ifdef _DEBUG
103# define DEBUG
104# endif
105
106# define snprintf _snprintf
107# define vsnprintf _vsnprintf
108
109# ifdef CONFIG_WINCE
110# define perror(a)
f940f7c9 111# define abort()
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112# endif
113
114/* __MINGW32__ end */
115#elif defined (CONFIG_OS2)
116/* OS/2 EMX */
117
635eb0cc 118# include <float.h>
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119
120#endif /* !__MINGW32__ && CONFIG_OS2 */
121
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122#ifdef USE_FASTMEMCPY
123# include "libvo/fastmemcpy.h"
124#endif
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125
126// Use rip-relative addressing if compiling PIC code on x86-64.
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127#if defined(__MINGW32__) || defined(__CYGWIN__) || \
128 defined(__OS2__) || (defined (__OpenBSD__) && !defined(__ELF__))
129# if defined(ARCH_X86_64) && defined(PIC)
130# define MANGLE(a) "_" #a"(%%rip)"
05020c89 131# else
635eb0cc 132# define MANGLE(a) "_" #a
05020c89 133# endif
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134#else
135# if defined(ARCH_X86_64) && defined(PIC)
136# define MANGLE(a) #a"(%%rip)"
137# elif defined(CONFIG_DARWIN)
138# define MANGLE(a) "_" #a
139# else
140# define MANGLE(a) #a
141# endif
142#endif
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143
144/* debug stuff */
145
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146#if !defined(DEBUG) && !defined(NDEBUG)
147# define NDEBUG
148#endif
149#include <assert.h>
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150
151/* dprintf macros */
635eb0cc 152#ifdef DEBUG
bdb4b698 153# define dprintf(...) av_log(NULL, AV_LOG_DEBUG, __VA_ARGS__)
635eb0cc 154#else
bdb4b698 155# define dprintf(...)
635eb0cc 156#endif
05020c89 157
635eb0cc 158#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
05020c89 159
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160/* math */
161
36cd3069 162extern const uint32_t ff_inverse[256];
05020c89 163
3cd52279 164#if defined(ARCH_X86)
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165# define FASTDIV(a,b) \
166 ({\
167 int ret,dmy;\
168 asm volatile(\
169 "mull %3"\
170 :"=d"(ret),"=a"(dmy)\
36cd3069 171 :"1"(a),"g"(ff_inverse[b])\
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172 );\
173 ret;\
174 })
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175#elif defined(ARCH_ARMV4L)
176# define FASTDIV(a,b) \
177 ({\
178 int ret,dmy;\
179 asm volatile(\
180 "umull %1, %0, %2, %3"\
181 :"=&r"(ret),"=&r"(dmy)\
36cd3069 182 :"r"(a),"r"(ff_inverse[b])\
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183 );\
184 ret;\
185 })
05020c89 186#elif defined(CONFIG_FASTDIV)
36cd3069 187# define FASTDIV(a,b) ((uint32_t)((((uint64_t)a)*ff_inverse[b])>>32))
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188#else
189# define FASTDIV(a,b) ((a)/(b))
190#endif
191
a77caa4d 192extern const uint8_t ff_sqrt_tab[128];
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193
194static inline int ff_sqrt(int a)
195{
196 int ret=0;
197 int s;
198 int ret_sq=0;
199
200 if(a<128) return ff_sqrt_tab[a];
201
202 for(s=15; s>=0; s--){
203 int b= ret_sq + (1<<(s*2)) + (ret<<s)*2;
204 if(b<=a){
205 ret_sq=b;
206 ret+= 1<<s;
207 }
208 }
209 return ret;
210}
211
3cd52279 212#if defined(ARCH_X86)
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213#define MASK_ABS(mask, level)\
214 asm volatile(\
215 "cdq \n\t"\
216 "xorl %1, %0 \n\t"\
217 "subl %1, %0 \n\t"\
218 : "+a" (level), "=&d" (mask)\
219 );
220#else
221#define MASK_ABS(mask, level)\
222 mask= level>>31;\
223 level= (level^mask)-mask;
224#endif
225
94e4c3a3 226#ifdef HAVE_CMOV
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227#define COPY3_IF_LT(x,y,a,b,c,d)\
228asm volatile (\
229 "cmpl %0, %3 \n\t"\
230 "cmovl %3, %0 \n\t"\
231 "cmovl %4, %1 \n\t"\
232 "cmovl %5, %2 \n\t"\
233 : "+r" (x), "+r" (a), "+r" (c)\
234 : "r" (y), "r" (b), "r" (d)\
235);
236#else
237#define COPY3_IF_LT(x,y,a,b,c,d)\
238if((y)<(x)){\
239 (x)=(y);\
240 (a)=(b);\
241 (c)=(d);\
242}
243#endif
244
245/* avoid usage of various functions */
246#define malloc please_use_av_malloc
247#define free please_use_av_free
248#define realloc please_use_av_realloc
249#define time time_is_forbidden_due_to_security_issues
250#define rand rand_is_forbidden_due_to_state_trashing
251#define srand srand_is_forbidden_due_to_state_trashing
252#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
253#define strcat strcat_is_forbidden_due_to_security_issues_use_pstrcat
254#if !(defined(LIBAVFORMAT_BUILD) || defined(_FRAMEHOOK_H))
255#define printf please_use_av_log
256#define fprintf please_use_av_log
257#endif
258
259#define CHECKED_ALLOCZ(p, size)\
260{\
261 p= av_mallocz(size);\
262 if(p==NULL && (size)!=0){\
263 perror("malloc");\
264 goto fail;\
265 }\
266}
267
268#ifndef HAVE_LRINTF
269/* XXX: add ISOC specific test to avoid specific BSD testing. */
270/* better than nothing implementation. */
271/* btw, rintf() is existing on fbsd too -- alex */
849f1035 272static av_always_inline long int lrintf(float x)
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273{
274#ifdef __MINGW32__
419b8784 275# ifdef ARCH_X86_32
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276 int32_t i;
277 asm volatile(
278 "fistpl %0\n\t"
279 : "=m" (i) : "t" (x) : "st"
280 );
281 return i;
282# else
283 /* XXX: incorrect, but make it compile */
284 return (int)(x + (x < 0 ? -0.5 : 0.5));
419b8784 285# endif /* ARCH_X86_32 */
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286#else
287 return (int)(rint(x));
288#endif /* __MINGW32__ */
289}
290#endif /* HAVE_LRINTF */
291
292#endif /* INTERNAL_H */