mirror of https://github.com/FFmpeg/FFmpeg.git
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
173 lines
4.7 KiB
173 lines
4.7 KiB
/* |
|
* 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)) |
|
# define AV_GCC_VERSION_AT_MOST(x,y) (__GNUC__ < (x) || __GNUC__ == (x) && __GNUC_MINOR__ <= (y)) |
|
#else |
|
# define AV_GCC_VERSION_AT_LEAST(x,y) 0 |
|
# define AV_GCC_VERSION_AT_MOST(x,y) 0 |
|
#endif |
|
|
|
#ifdef __has_builtin |
|
# define AV_HAS_BUILTIN(x) __has_builtin(x) |
|
#else |
|
# define AV_HAS_BUILTIN(x) 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(3,4) |
|
# define av_warn_unused_result __attribute__((warn_unused_result)) |
|
#else |
|
# define av_warn_unused_result |
|
#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) || defined(__clang__) |
|
# define av_pure __attribute__((pure)) |
|
#else |
|
# define av_pure |
|
#endif |
|
|
|
#if AV_GCC_VERSION_AT_LEAST(2,6) || defined(__clang__) |
|
# define av_const __attribute__((const)) |
|
#else |
|
# define av_const |
|
#endif |
|
|
|
#if AV_GCC_VERSION_AT_LEAST(4,3) || defined(__clang__) |
|
# define av_cold __attribute__((cold)) |
|
#else |
|
# define av_cold |
|
#endif |
|
|
|
#if AV_GCC_VERSION_AT_LEAST(4,1) && !defined(__llvm__) |
|
# 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__) || defined(__clang__) |
|
# 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) || defined(__clang__) |
|
# define av_used __attribute__((used)) |
|
#else |
|
# define av_used |
|
#endif |
|
|
|
#if AV_GCC_VERSION_AT_LEAST(3,3) || defined(__clang__) |
|
# define av_alias __attribute__((may_alias)) |
|
#else |
|
# define av_alias |
|
#endif |
|
|
|
#if (defined(__GNUC__) || defined(__clang__)) && !defined(__INTEL_COMPILER) |
|
# define av_uninit(x) x=x |
|
#else |
|
# define av_uninit(x) x |
|
#endif |
|
|
|
#if defined(__GNUC__) || defined(__clang__) |
|
# 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) || defined(__clang__) |
|
# define av_noreturn __attribute__((noreturn)) |
|
#else |
|
# define av_noreturn |
|
#endif |
|
|
|
#endif /* AVUTIL_ATTRIBUTES_H */
|
|
|