repositories / deb_ffmpeg.git / blame
| Commit | Line | Data |
|---|---|---|
| 2ba45a60 DM |
1 | /* |
| 2 | * copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> | |
| 3 | * | |
| 4 | * This file is part of FFmpeg. | |
| 5 | * | |
| 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. | |
| 10 | * | |
| 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. | |
| 15 | * | |
| 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 | |
| 19 | */ | |
| 20 | ||
| 21 | /** | |
| 22 | * @file | |
| 23 | * Macro definitions for various function/variable attributes | |
| 24 | */ | |
| 25 | ||
| 26 | #ifndef AVUTIL_ATTRIBUTES_H | |
| 27 | #define AVUTIL_ATTRIBUTES_H | |
| 28 | ||
| 29 | #ifdef __GNUC__ | |
| 30 | # define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y) | |
| 31 | #else | |
| 32 | # define AV_GCC_VERSION_AT_LEAST(x,y) 0 | |
| 33 | #endif | |
| 34 | ||
| 35 | #ifndef av_always_inline | |
| 36 | #if AV_GCC_VERSION_AT_LEAST(3,1) | |
| 37 | # define av_always_inline __attribute__((always_inline)) inline | |
| 38 | #elif defined(_MSC_VER) | |
| 39 | # define av_always_inline __forceinline | |
| 40 | #else | |
| 41 | # define av_always_inline inline | |
| 42 | #endif | |
| 43 | #endif | |
| 44 | ||
| 45 | #ifndef av_extern_inline | |
| 46 | #if defined(__ICL) && __ICL >= 1210 || defined(__GNUC_STDC_INLINE__) | |
| 47 | # define av_extern_inline extern inline | |
| 48 | #else | |
| 49 | # define av_extern_inline inline | |
| 50 | #endif | |
| 51 | #endif | |
| 52 | ||
| 53 | #if AV_GCC_VERSION_AT_LEAST(3,1) | |
| 54 | # define av_noinline __attribute__((noinline)) | |
| 55 | #elif defined(_MSC_VER) | |
| 56 | # define av_noinline __declspec(noinline) | |
| 57 | #else | |
| 58 | # define av_noinline | |
| 59 | #endif | |
| 60 | ||
| 61 | #if AV_GCC_VERSION_AT_LEAST(3,1) | |
| 62 | # define av_pure __attribute__((pure)) | |
| 63 | #else | |
| 64 | # define av_pure | |
| 65 | #endif | |
| 66 | ||
| 67 | #if AV_GCC_VERSION_AT_LEAST(2,6) | |
| 68 | # define av_const __attribute__((const)) | |
| 69 | #else | |
| 70 | # define av_const | |
| 71 | #endif | |
| 72 | ||
| 73 | #if AV_GCC_VERSION_AT_LEAST(4,3) | |
| 74 | # define av_cold __attribute__((cold)) | |
| 75 | #else | |
| 76 | # define av_cold | |
| 77 | #endif | |
| 78 | ||
| 79 | #if AV_GCC_VERSION_AT_LEAST(4,1) && !defined(__llvm__) | |
| 80 | # define av_flatten __attribute__((flatten)) | |
| 81 | #else | |
| 82 | # define av_flatten | |
| 83 | #endif | |
| 84 | ||
| 85 | #if AV_GCC_VERSION_AT_LEAST(3,1) | |
| 86 | # define attribute_deprecated __attribute__((deprecated)) | |
| 87 | #elif defined(_MSC_VER) | |
| 88 | # define attribute_deprecated __declspec(deprecated) | |
| 89 | #else | |
| 90 | # define attribute_deprecated | |
| 91 | #endif | |
| 92 | ||
| 93 | /** | |
| 94 | * Disable warnings about deprecated features | |
| 95 | * This is useful for sections of code kept for backward compatibility and | |
| 96 | * scheduled for removal. | |
| 97 | */ | |
| 98 | #ifndef AV_NOWARN_DEPRECATED | |
| 99 | #if AV_GCC_VERSION_AT_LEAST(4,6) | |
| 100 | # define AV_NOWARN_DEPRECATED(code) \ | |
| 101 | _Pragma("GCC diagnostic push") \ | |
| 102 | _Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \ | |
| 103 | code \ | |
| 104 | _Pragma("GCC diagnostic pop") | |
| 105 | #elif defined(_MSC_VER) | |
| 106 | # define AV_NOWARN_DEPRECATED(code) \ | |
| 107 | __pragma(warning(push)) \ | |
| 108 | __pragma(warning(disable : 4996)) \ | |
| 109 | code; \ | |
| 110 | __pragma(warning(pop)) | |
| 111 | #else | |
| 112 | # define AV_NOWARN_DEPRECATED(code) code | |
| 113 | #endif | |
| 114 | #endif | |
| 115 | ||
| 116 | ||
| 117 | #if defined(__GNUC__) | |
| 118 | # define av_unused __attribute__((unused)) | |
| 119 | #else | |
| 120 | # define av_unused | |
| 121 | #endif | |
| 122 | ||
| 123 | /** | |
| 124 | * Mark a variable as used and prevent the compiler from optimizing it | |
| 125 | * away. This is useful for variables accessed only from inline | |
| 126 | * assembler without the compiler being aware. | |
| 127 | */ | |
| 128 | #if AV_GCC_VERSION_AT_LEAST(3,1) | |
| 129 | # define av_used __attribute__((used)) | |
| 130 | #else | |
| 131 | # define av_used | |
| 132 | #endif | |
| 133 | ||
| 134 | #if AV_GCC_VERSION_AT_LEAST(3,3) | |
| 135 | # define av_alias __attribute__((may_alias)) | |
| 136 | #else | |
| 137 | # define av_alias | |
| 138 | #endif | |
| 139 | ||
| 140 | #if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !defined(__clang__) | |
| 141 | # define av_uninit(x) x=x | |
| 142 | #else | |
| 143 | # define av_uninit(x) x | |
| 144 | #endif | |
| 145 | ||
| 146 | #ifdef __GNUC__ | |
| 147 | # define av_builtin_constant_p __builtin_constant_p | |
| 148 | # define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos))) | |
| 149 | #else | |
| 150 | # define av_builtin_constant_p(x) 0 | |
| 151 | # define av_printf_format(fmtpos, attrpos) | |
| 152 | #endif | |
| 153 | ||
| 154 | #if AV_GCC_VERSION_AT_LEAST(2,5) | |
| 155 | # define av_noreturn __attribute__((noreturn)) | |
| 156 | #else | |
| 157 | # define av_noreturn | |
| 158 | #endif | |
| 159 | ||
| 160 | #endif /* AVUTIL_ATTRIBUTES_H */ |