/* * 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>#include "version.h" #define AV_CPU_FLAG_FORCE    0x80000000 /* force usage of selected flags (OR) */     /* lower 16 bits - CPU features */#define AV_CPU_FLAG_MMX          0x0001 ///< standard MMX#define AV_CPU_FLAG_MMXEXT       0x0002 ///< SSE integer functions or AMD MMX ext#define AV_CPU_FLAG_MMX2         0x0002 ///< SSE integer functions or AMD MMX ext#define AV_CPU_FLAG_3DNOW        0x0004 ///< AMD 3DNOW#define AV_CPU_FLAG_SSE          0x0008 ///< SSE functions#define AV_CPU_FLAG_SSE2         0x0010 ///< PIV SSE2 functions#define AV_CPU_FLAG_SSE2SLOW 0x40000000 ///< SSE2 supported, but usually not faster                                        ///< than regular MMX/SSE (e.g. Core1)#define AV_CPU_FLAG_3DNOWEXT     0x0020 ///< AMD 3DNowExt#define AV_CPU_FLAG_SSE3         0x0040 ///< Prescott SSE3 functions#define AV_CPU_FLAG_SSE3SLOW 0x20000000 ///< SSE3 supported, but usually not faster                                        ///< than regular MMX/SSE (e.g. Core1)#define AV_CPU_FLAG_SSSE3        0x0080 ///< Conroe SSSE3 functions#define AV_CPU_FLAG_SSSE3SLOW 0x4000000 ///< SSSE3 supported, but usually not faster#define AV_CPU_FLAG_ATOM     0x10000000 ///< Atom processor, some SSSE3 instructions are slower#define AV_CPU_FLAG_SSE4         0x0100 ///< Penryn SSE4.1 functions#define AV_CPU_FLAG_SSE42        0x0200 ///< Nehalem SSE4.2 functions#define AV_CPU_FLAG_AESNI       0x80000 ///< Advanced Encryption Standard functions#define AV_CPU_FLAG_AVX          0x4000 ///< AVX functions: requires OS support even if YMM registers aren't used#define AV_CPU_FLAG_AVXSLOW   0x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer)#define AV_CPU_FLAG_XOP          0x0400 ///< Bulldozer XOP functions#define AV_CPU_FLAG_FMA4         0x0800 ///< Bulldozer FMA4 functions#define AV_CPU_FLAG_CMOV         0x1000 ///< supports cmov instruction#define AV_CPU_FLAG_AVX2         0x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used#define AV_CPU_FLAG_FMA3        0x10000 ///< Haswell FMA3 functions#define AV_CPU_FLAG_BMI1        0x20000 ///< Bit Manipulation Instruction Set 1#define AV_CPU_FLAG_BMI2        0x40000 ///< Bit Manipulation Instruction Set 2#define AV_CPU_FLAG_AVX512     0x100000 ///< AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used#define AV_CPU_FLAG_AVX512ICL  0x200000 ///< F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ#define AV_CPU_FLAG_SLOW_GATHER  0x2000000 ///< CPU has slow gathers. #define AV_CPU_FLAG_ALTIVEC      0x0001 ///< standard#define AV_CPU_FLAG_VSX          0x0002 ///< ISA 2.06#define AV_CPU_FLAG_POWER8       0x0004 ///< ISA 2.07 #define AV_CPU_FLAG_ARMV5TE      (1 << 0)#define AV_CPU_FLAG_ARMV6        (1 << 1)#define AV_CPU_FLAG_ARMV6T2      (1 << 2)#define AV_CPU_FLAG_VFP          (1 << 3)#define AV_CPU_FLAG_VFPV3        (1 << 4)#define AV_CPU_FLAG_NEON         (1 << 5)#define AV_CPU_FLAG_ARMV8        (1 << 6)#define AV_CPU_FLAG_VFP_VM       (1 << 7) ///< VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations#define AV_CPU_FLAG_DOTPROD      (1 << 8)#define AV_CPU_FLAG_I8MM         (1 << 9)#define AV_CPU_FLAG_SVE          (1 <<10)#define AV_CPU_FLAG_SVE2         (1 <<11)#define AV_CPU_FLAG_SETEND       (1 <<16) #define AV_CPU_FLAG_MMI          (1 << 0)#define AV_CPU_FLAG_MSA          (1 << 1) //Loongarch SIMD extension.#define AV_CPU_FLAG_LSX          (1 << 0)#define AV_CPU_FLAG_LASX         (1 << 1) // RISC-V extensions#define AV_CPU_FLAG_RVI          (1 << 0) ///< I (full GPR bank)#if FF_API_RISCV_FD_ZBA#define AV_CPU_FLAG_RVF          (1 << 1) ///< F (single precision FP)#define AV_CPU_FLAG_RVD          (1 << 2) ///< D (double precision FP)#endif#define AV_CPU_FLAG_RVV_I32      (1 << 3) ///< Vectors of 8/16/32-bit int's */#define AV_CPU_FLAG_RVV_F32      (1 << 4) ///< Vectors of float's */#define AV_CPU_FLAG_RVV_I64      (1 << 5) ///< Vectors of 64-bit int's */#define AV_CPU_FLAG_RVV_F64      (1 << 6) ///< Vectors of double's#define AV_CPU_FLAG_RVB_BASIC    (1 << 7) ///< Basic bit-manipulations#if FF_API_RISCV_FD_ZBA#define AV_CPU_FLAG_RVB_ADDR     (1 << 8) ///< Address bit-manipulations#endif#define AV_CPU_FLAG_RV_ZVBB      (1 << 9) ///< Vector basic bit-manipulations#define AV_CPU_FLAG_RV_MISALIGNED (1 <<10) ///< Fast misaligned accesses#define AV_CPU_FLAG_RVB          (1 <<11) ///< B (bit manipulations) // WASM extensions#define AV_CPU_FLAG_SIMD128      (1 << 0) /** * 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 */