mirror of
https://github.com/FFmpeg/FFmpeg.git
synced 2024-11-21 10:55:51 +02:00
146 lines
6.5 KiB
C
146 lines
6.5 KiB
C
/*
|
|
* 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_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)
|
|
|
|
/**
|
|
* 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 */
|