/* * 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 #ifdef __has_attribute# define AV_HAS_ATTRIBUTE(x) __has_attribute(x)#else # define AV_HAS_ATTRIBUTE(x) 0 #endif #if defined (__cplusplus) && \defined (__has_cpp_attribute) && \201103 L# define AV_HAS_STD_ATTRIBUTE(x) __has_cpp_attribute(x)#elif !defined (__cplusplus) && \defined (__has_c_attribute) && \defined (__STDC_VERSION__) && \202311 L# define AV_HAS_STD_ATTRIBUTE(x) __has_c_attribute(x)#else # define AV_HAS_STD_ATTRIBUTE(x) 0 #endif #ifndef av_always_inline#if AV_GCC_VERSION_AT_LEAST(3 ,1 ) || defined (__clang__)# 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_HAS_STD_ATTRIBUTE(nodiscard)# define av_warn_unused_result [[nodiscard]]#elif AV_GCC_VERSION_AT_LEAST(3 ,4 ) || defined (__clang__)# define av_warn_unused_result __attribute__((warn_unused_result))#else # define av_warn_unused_result#endif #if AV_GCC_VERSION_AT_LEAST(3 ,1 ) || defined (__clang__)# 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 (__clang__ )) || AV_HAS_ATTRIBUTE(flatten)# define av_flatten __attribute__((flatten))#else # define av_flatten#endif #if AV_HAS_STD_ATTRIBUTE(deprecated)# define attribute_deprecated [[deprecated]]#elif AV_GCC_VERSION_AT_LEAST(3 ,1 ) || defined (__clang__)# 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 ) || defined (__clang__)# define AV_NOWARN_DEPRECATED(code) \"GCC diagnostic push" ) \"GCC diagnostic ignored \" -Wdeprecated-declarations\"" ) \"GCC diagnostic pop" )#elif defined (_MSC_VER)# define AV_NOWARN_DEPRECATED(code) \4996 )) \#else # define AV_NOWARN_DEPRECATED(code) code#endif #endif #if AV_HAS_STD_ATTRIBUTE(maybe_unused)# define av_unused [[maybe_unused]]#elif 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#else # define av_builtin_constant_p(x) 0 #endif // for __MINGW_PRINTF_FORMAT and __MINGW_SCANF_FORMAT #ifdef __MINGW32__# include <stdio.h>#endif #ifdef __MINGW_PRINTF_FORMAT# define AV_PRINTF_FMT __MINGW_PRINTF_FORMAT#elif AV_HAS_ATTRIBUTE(format)# define AV_PRINTF_FMT __printf__#endif #ifdef __MINGW_SCANF_FORMAT# define AV_SCANF_FMT __MINGW_SCANF_FORMAT#elif AV_HAS_ATTRIBUTE(format)# define AV_SCANF_FMT __scanf__#endif #ifdef AV_PRINTF_FMT# define av_printf_format(fmtpos, attrpos) __attribute__((format(AV_PRINTF_FMT, fmtpos, attrpos)))#else # define av_printf_format(fmtpos, attrpos)#endif #ifdef AV_SCANF_FMT# define av_scanf_format(fmtpos, attrpos) __attribute__((format(AV_SCANF_FMT, fmtpos, attrpos)))#else # define av_scanf_format(fmtpos, attrpos)#endif #if AV_HAS_STD_ATTRIBUTE(noreturn)# define av_noreturn [[noreturn]]#elif AV_GCC_VERSION_AT_LEAST(2 ,5 ) || defined (__clang__)# define av_noreturn __attribute__((noreturn))#else # define av_noreturn#endif #endif /* AVUTIL_ATTRIBUTES_H */
Messung V0.5 in Prozent C=95 H=100 G=97
¤ Dauer der Verarbeitung: 0.9 Sekunden
¤ *© Formatika GbR, Deutschland
