/* * Copyright (c) 2000, 2001, 2002 Fabrice Bellard * * 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 */ #ifndef AVUTIL_CPU_H #define AVUTIL_CPU_H #include <stddef.h> #define AV_CPU_FLAG_FORCE … /* lower 16 bits - CPU features */ #define AV_CPU_FLAG_MMX … #define AV_CPU_FLAG_MMXEXT … #define AV_CPU_FLAG_MMX2 … #define AV_CPU_FLAG_3DNOW … #define AV_CPU_FLAG_SSE … #define AV_CPU_FLAG_SSE2 … #define AV_CPU_FLAG_SSE2SLOW … ///< than regular MMX/SSE (e.g. Core1) #define AV_CPU_FLAG_3DNOWEXT … #define AV_CPU_FLAG_SSE3 … #define AV_CPU_FLAG_SSE3SLOW … ///< than regular MMX/SSE (e.g. Core1) #define AV_CPU_FLAG_SSSE3 … #define AV_CPU_FLAG_SSSE3SLOW … #define AV_CPU_FLAG_ATOM … #define AV_CPU_FLAG_SSE4 … #define AV_CPU_FLAG_SSE42 … #define AV_CPU_FLAG_AESNI … #define AV_CPU_FLAG_AVX … #define AV_CPU_FLAG_AVXSLOW … #define AV_CPU_FLAG_XOP … #define AV_CPU_FLAG_FMA4 … #define AV_CPU_FLAG_CMOV … #define AV_CPU_FLAG_AVX2 … #define AV_CPU_FLAG_FMA3 … #define AV_CPU_FLAG_BMI1 … #define AV_CPU_FLAG_BMI2 … #define AV_CPU_FLAG_AVX512 … #define AV_CPU_FLAG_AVX512ICL … #define AV_CPU_FLAG_SLOW_GATHER … #define AV_CPU_FLAG_ALTIVEC … #define AV_CPU_FLAG_VSX … #define AV_CPU_FLAG_POWER8 … #define AV_CPU_FLAG_ARMV5TE … #define AV_CPU_FLAG_ARMV6 … #define AV_CPU_FLAG_ARMV6T2 … #define AV_CPU_FLAG_VFP … #define AV_CPU_FLAG_VFPV3 … #define AV_CPU_FLAG_NEON … #define AV_CPU_FLAG_ARMV8 … #define AV_CPU_FLAG_VFP_VM … #define AV_CPU_FLAG_DOTPROD … #define AV_CPU_FLAG_I8MM … #define AV_CPU_FLAG_SETEND … #define AV_CPU_FLAG_MMI … #define AV_CPU_FLAG_MSA … //Loongarch SIMD extension. #define AV_CPU_FLAG_LSX … #define AV_CPU_FLAG_LASX … // RISC-V extensions #define AV_CPU_FLAG_RVI … #define AV_CPU_FLAG_RVF … #define AV_CPU_FLAG_RVD … #define AV_CPU_FLAG_RVV_I32 … #define AV_CPU_FLAG_RVV_F32 … #define AV_CPU_FLAG_RVV_I64 … #define AV_CPU_FLAG_RVV_F64 … #define AV_CPU_FLAG_RVB_BASIC … #define AV_CPU_FLAG_RVB_ADDR … #define AV_CPU_FLAG_RV_ZVBB … #define AV_CPU_FLAG_RV_MISALIGNED … /** * Return the flags which specify extensions supported by the CPU. * The returned value is affected by av_force_cpu_flags() if that was used * before. So av_get_cpu_flags() can easily be used in an application to * detect the enabled cpu flags. */ int av_get_cpu_flags(void); /** * Disables cpu detection and forces the specified flags. * -1 is a special case that disables forcing of specific flags. */ void av_force_cpu_flags(int flags); /** * Parse CPU caps from a string and update the given AV_CPU_* flags based on that. * * @return negative on error. */ int av_parse_cpu_caps(unsigned *flags, const char *s); /** * @return the number of logical CPU cores present. */ int av_cpu_count(void); /** * Overrides cpu count detection and forces the specified count. * Count < 1 disables forcing of specific count. */ void av_cpu_force_count(int count); /** * Get the maximum data alignment that may be required by FFmpeg. * * Note that this is affected by the build configuration and the CPU flags mask, * so e.g. if the CPU supports AVX, but libavutil has been built with * --disable-avx or the AV_CPU_FLAG_AVX flag has been disabled through * av_set_cpu_flags_mask(), then this function will behave as if AVX is not * present. */ size_t av_cpu_max_align(void); #endif /* AVUTIL_CPU_H */
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