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| 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 libavutil/attributes.h |
| 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 && __GNU
C_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 #else |
| 39 # define av_always_inline inline |
| 40 #endif |
| 41 #endif |
| 42 |
| 43 #ifndef av_noinline |
| 44 #if AV_GCC_VERSION_AT_LEAST(3,1) |
| 45 # define av_noinline __attribute__((noinline)) |
| 46 #else |
| 47 # define av_noinline |
| 48 #endif |
| 49 #endif |
| 50 |
| 51 #ifndef av_pure |
| 52 #if AV_GCC_VERSION_AT_LEAST(3,1) |
| 53 # define av_pure __attribute__((pure)) |
| 54 #else |
| 55 # define av_pure |
| 56 #endif |
| 57 #endif |
| 58 |
| 59 #ifndef av_const |
| 60 #if AV_GCC_VERSION_AT_LEAST(2,6) |
| 61 # define av_const __attribute__((const)) |
| 62 #else |
| 63 # define av_const |
| 64 #endif |
| 65 #endif |
| 66 |
| 67 #ifndef av_cold |
| 68 #if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,3) |
| 69 # define av_cold __attribute__((cold)) |
| 70 #else |
| 71 # define av_cold |
| 72 #endif |
| 73 #endif |
| 74 |
| 75 #ifndef av_flatten |
| 76 #if (!defined(__ICC) || __ICC > 1110) && AV_GCC_VERSION_AT_LEAST(4,1) |
| 77 # define av_flatten __attribute__((flatten)) |
| 78 #else |
| 79 # define av_flatten |
| 80 #endif |
| 81 #endif |
| 82 |
| 83 #ifndef attribute_deprecated |
| 84 #if AV_GCC_VERSION_AT_LEAST(3,1) |
| 85 # define attribute_deprecated __attribute__((deprecated)) |
| 86 #else |
| 87 # define attribute_deprecated |
| 88 #endif |
| 89 #endif |
| 90 |
| 91 #ifndef av_unused |
| 92 #if defined(__GNUC__) |
| 93 # define av_unused __attribute__((unused)) |
| 94 #else |
| 95 # define av_unused |
| 96 #endif |
| 97 #endif |
| 98 |
| 99 #ifndef av_uninit |
| 100 #if defined(__GNUC__) && !defined(__ICC) |
| 101 # define av_uninit(x) x=x |
| 102 #else |
| 103 # define av_uninit(x) x |
| 104 #endif |
| 105 #endif |
| 106 |
| 107 #endif /* AVUTIL_ATTRIBUTES_H */ |
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