0,0 → 1,160 |
/* |
* copyright (c) 2006 Michael Niedermayer <michaelni@gmx.at> |
* |
* This file is part of FFmpeg. |
* |
* FFmpeg is free software; you can redistribute it and/or |
* modify it under the terms of the GNU Lesser General Public |
* License as published by the Free Software Foundation; either |
* version 2.1 of the License, or (at your option) any later version. |
* |
* FFmpeg is distributed in the hope that it will be useful, |
* but WITHOUT ANY WARRANTY; without even the implied warranty of |
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
* Lesser General Public License for more details. |
* |
* You should have received a copy of the GNU Lesser General Public |
* License along with FFmpeg; if not, write to the Free Software |
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA |
*/ |
|
/** |
* @file |
* Macro definitions for various function/variable attributes |
*/ |
|
#ifndef AVUTIL_ATTRIBUTES_H |
#define AVUTIL_ATTRIBUTES_H |
|
#ifdef __GNUC__ |
# define AV_GCC_VERSION_AT_LEAST(x,y) (__GNUC__ > x || __GNUC__ == x && __GNUC_MINOR__ >= y) |
#else |
# define AV_GCC_VERSION_AT_LEAST(x,y) 0 |
#endif |
|
#ifndef av_always_inline |
#if AV_GCC_VERSION_AT_LEAST(3,1) |
# define av_always_inline __attribute__((always_inline)) inline |
#elif defined(_MSC_VER) |
# define av_always_inline __forceinline |
#else |
# define av_always_inline inline |
#endif |
#endif |
|
#ifndef av_extern_inline |
#if defined(__ICL) && __ICL >= 1210 || defined(__GNUC_STDC_INLINE__) |
# define av_extern_inline extern inline |
#else |
# define av_extern_inline inline |
#endif |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(3,1) |
# define av_noinline __attribute__((noinline)) |
#elif defined(_MSC_VER) |
# define av_noinline __declspec(noinline) |
#else |
# define av_noinline |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(3,1) |
# define av_pure __attribute__((pure)) |
#else |
# define av_pure |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(2,6) |
# define av_const __attribute__((const)) |
#else |
# define av_const |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(4,3) |
# define av_cold __attribute__((cold)) |
#else |
# define av_cold |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(4,1) |
# define av_flatten __attribute__((flatten)) |
#else |
# define av_flatten |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(3,1) |
# define attribute_deprecated __attribute__((deprecated)) |
#elif defined(_MSC_VER) |
# define attribute_deprecated __declspec(deprecated) |
#else |
# define attribute_deprecated |
#endif |
|
/** |
* Disable warnings about deprecated features |
* This is useful for sections of code kept for backward compatibility and |
* scheduled for removal. |
*/ |
#ifndef AV_NOWARN_DEPRECATED |
#if AV_GCC_VERSION_AT_LEAST(4,6) |
# define AV_NOWARN_DEPRECATED(code) \ |
_Pragma("GCC diagnostic push") \ |
_Pragma("GCC diagnostic ignored \"-Wdeprecated-declarations\"") \ |
code \ |
_Pragma("GCC diagnostic pop") |
#elif defined(_MSC_VER) |
# define AV_NOWARN_DEPRECATED(code) \ |
__pragma(warning(push)) \ |
__pragma(warning(disable : 4996)) \ |
code; \ |
__pragma(warning(pop)) |
#else |
# define AV_NOWARN_DEPRECATED(code) code |
#endif |
#endif |
|
|
#if defined(__GNUC__) |
# define av_unused __attribute__((unused)) |
#else |
# define av_unused |
#endif |
|
/** |
* Mark a variable as used and prevent the compiler from optimizing it |
* away. This is useful for variables accessed only from inline |
* assembler without the compiler being aware. |
*/ |
#if AV_GCC_VERSION_AT_LEAST(3,1) |
# define av_used __attribute__((used)) |
#else |
# define av_used |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(3,3) |
# define av_alias __attribute__((may_alias)) |
#else |
# define av_alias |
#endif |
|
#if defined(__GNUC__) && !defined(__INTEL_COMPILER) && !defined(__clang__) |
# define av_uninit(x) x=x |
#else |
# define av_uninit(x) x |
#endif |
|
#ifdef __GNUC__ |
# define av_builtin_constant_p __builtin_constant_p |
# define av_printf_format(fmtpos, attrpos) __attribute__((__format__(__printf__, fmtpos, attrpos))) |
#else |
# define av_builtin_constant_p(x) 0 |
# define av_printf_format(fmtpos, attrpos) |
#endif |
|
#if AV_GCC_VERSION_AT_LEAST(2,5) |
# define av_noreturn __attribute__((noreturn)) |
#else |
# define av_noreturn |
#endif |
|
#endif /* AVUTIL_ATTRIBUTES_H */ |