FATE: update vc1 reference output
[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
05020c89 21/**
ba87f080 22 * @file
89c9ff50 23 * common internal API header
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24 */
25
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26#ifndef AVUTIL_INTERNAL_H
27#define AVUTIL_INTERNAL_H
05020c89 28
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29#if !defined(DEBUG) && !defined(NDEBUG)
30# define NDEBUG
31#endif
32
ed0fd852 33#include <limits.h>
99545457 34#include <stdint.h>
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35#include <stddef.h>
36#include <assert.h>
dbef3f46 37#include "config.h"
2ed6f399 38#include "attributes.h"
2f5421d5 39#include "timer.h"
99545457 40
5e4c7ca2 41#ifndef attribute_align_arg
06be9d9d 42#if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,2)
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43# define attribute_align_arg __attribute__((force_align_arg_pointer))
44#else
45# define attribute_align_arg
46#endif
47#endif
48
5403f857 49#ifndef attribute_used
52476c1b 50#if AV_GCC_VERSION_AT_LEAST(3,1)
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51# define attribute_used __attribute__((used))
52#else
53# define attribute_used
54#endif
55#endif
56
cd107896 57#ifndef INT16_MIN
ee155011 58#define INT16_MIN (-0x7fff - 1)
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59#endif
60
61#ifndef INT16_MAX
62#define INT16_MAX 0x7fff
63#endif
64
65#ifndef INT32_MIN
ee155011 66#define INT32_MIN (-0x7fffffff - 1)
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67#endif
68
69#ifndef INT32_MAX
70#define INT32_MAX 0x7fffffff
71#endif
72
73#ifndef UINT32_MAX
74#define UINT32_MAX 0xffffffff
75#endif
76
77#ifndef INT64_MIN
ee155011 78#define INT64_MIN (-0x7fffffffffffffffLL - 1)
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79#endif
80
81#ifndef INT64_MAX
8da9266c 82#define INT64_MAX INT64_C(9223372036854775807)
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83#endif
84
85#ifndef UINT64_MAX
8da9266c 86#define UINT64_MAX UINT64_C(0xFFFFFFFFFFFFFFFF)
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87#endif
88
89#ifndef INT_BIT
28499cc8 90# define INT_BIT (CHAR_BIT * sizeof(int))
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91#endif
92
05020c89 93#ifndef offsetof
ee155011 94# define offsetof(T, F) ((unsigned int)((char *)&((T *)0)->F))
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95#endif
96
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97/* Use to export labels from asm. */
98#define LABEL_MANGLE(a) EXTERN_PREFIX #a
99
05020c89 100// Use rip-relative addressing if compiling PIC code on x86-64.
b250f9c6 101#if ARCH_X86_64 && defined(PIC)
df22c35d 102# define LOCAL_MANGLE(a) #a "(%%rip)"
edfd6975 103#else
df22c35d 104# define LOCAL_MANGLE(a) #a
635eb0cc 105#endif
05020c89 106
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107#define MANGLE(a) EXTERN_PREFIX LOCAL_MANGLE(a)
108
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109/* debug stuff */
110
05020c89 111/* dprintf macros */
635eb0cc 112#ifdef DEBUG
318c5e05 113# define dprintf(pctx, ...) av_log(pctx, AV_LOG_DEBUG, __VA_ARGS__)
635eb0cc 114#else
318c5e05 115# define dprintf(pctx, ...)
635eb0cc 116#endif
05020c89 117
635eb0cc 118#define av_abort() do { av_log(NULL, AV_LOG_ERROR, "Abort at %s:%d\n", __FILE__, __LINE__); abort(); } while (0)
05020c89 119
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120/* math */
121
b250f9c6 122#if ARCH_X86
05020c89 123#define MASK_ABS(mask, level)\
be449fca 124 __asm__ volatile(\
7e14b808 125 "cltd \n\t"\
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126 "xorl %1, %0 \n\t"\
127 "subl %1, %0 \n\t"\
128 : "+a" (level), "=&d" (mask)\
129 );
130#else
131#define MASK_ABS(mask, level)\
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132 mask = level >> 31;\
133 level = (level ^ mask) - mask;
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134#endif
135
7d685b48 136/* avoid usage of dangerous/inappropriate system functions */
84662c01 137#undef malloc
05020c89 138#define malloc please_use_av_malloc
84662c01 139#undef free
05020c89 140#define free please_use_av_free
84662c01 141#undef realloc
05020c89 142#define realloc please_use_av_realloc
84662c01 143#undef time
05020c89 144#define time time_is_forbidden_due_to_security_issues
84662c01 145#undef rand
9f5da4d1 146#define rand rand_is_forbidden_due_to_state_trashing_use_av_lfg_get
84662c01 147#undef srand
9f5da4d1 148#define srand srand_is_forbidden_due_to_state_trashing_use_av_lfg_init
84662c01 149#undef random
9f5da4d1 150#define random random_is_forbidden_due_to_state_trashing_use_av_lfg_get
84662c01 151#undef sprintf
05020c89 152#define sprintf sprintf_is_forbidden_due_to_security_issues_use_snprintf
84662c01 153#undef strcat
272605c7 154#define strcat strcat_is_forbidden_due_to_security_issues_use_av_strlcat
84662c01 155#undef exit
c367d067 156#define exit exit_is_forbidden
6123abad 157#ifndef LIBAVFORMAT_BUILD
84662c01 158#undef printf
b58f29a1 159#define printf please_use_av_log_instead_of_printf
84662c01 160#undef fprintf
b58f29a1 161#define fprintf please_use_av_log_instead_of_fprintf
59ec6991 162#undef puts
b58f29a1 163#define puts please_use_av_log_instead_of_puts
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164#undef perror
165#define perror please_use_av_log_instead_of_perror
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166#endif
167
d31dbec3 168#define FF_ALLOC_OR_GOTO(ctx, p, size, label)\
e48a0966 169{\
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170 p = av_malloc(size);\
171 if (p == NULL && (size) != 0) {\
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172 av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
173 goto label;\
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174 }\
175}
176
d31dbec3 177#define FF_ALLOCZ_OR_GOTO(ctx, p, size, label)\
05020c89 178{\
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179 p = av_mallocz(size);\
180 if (p == NULL && (size) != 0) {\
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181 av_log(ctx, AV_LOG_ERROR, "Cannot allocate memory.\n");\
182 goto label;\
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183 }\
184}
185
335ee1aa 186#include "libm.h"
7b04b8a0 187
d80a7fe5 188/**
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189 * Returns NULL if CONFIG_SMALL is true, otherwise the argument
190 * without modification. Used to disable the definition of strings
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191 * (for example AVCodec long_names).
192 */
193#if CONFIG_SMALL
194# define NULL_IF_CONFIG_SMALL(x) NULL
195#else
196# define NULL_IF_CONFIG_SMALL(x) x
197#endif
198
98790382 199#endif /* AVUTIL_INTERNAL_H */