/*
* 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"
#if FF_API_CPU_FLAG_FORCE
#define AV_CPU_FLAG_FORCE 0 x80000000 /* @deprecated, should not be used */
#endif
/* lower 16 bits - CPU features */
#define AV_CPU_FLAG_MMX 0 x0001 ///< standard MMX
#define AV_CPU_FLAG_MMXEXT 0 x0002 ///< SSE integer functions or AMD MMX ext
#define AV_CPU_FLAG_MMX2 0 x0002 ///< SSE integer functions or AMD MMX ext
#define AV_CPU_FLAG_3DNOW 0 x0004 ///< AMD 3DNOW
#define AV_CPU_FLAG_SSE 0 x0008 ///< SSE functions
#define AV_CPU_FLAG_SSE2 0 x0010 ///< PIV SSE2 functions
#define AV_CPU_FLAG_SSE2SLOW 0 x40000000 ///< SSE2 supported, but usually not faster
///< than regular MMX/SSE (e.g. Core1)
#define AV_CPU_FLAG_3DNOWEXT 0 x0020 ///< AMD 3DNowExt
#define AV_CPU_FLAG_SSE3 0 x0040 ///< Prescott SSE3 functions
#define AV_CPU_FLAG_SSE3SLOW 0 x20000000 ///< SSE3 supported, but usually not faster
///< than regular MMX/SSE (e.g. Core1)
#define AV_CPU_FLAG_SSSE3 0 x0080 ///< Conroe SSSE3 functions
#define AV_CPU_FLAG_SSSE3SLOW 0 x4000000 ///< SSSE3 supported, but usually not faster
#define AV_CPU_FLAG_ATOM 0 x10000000 ///< Atom processor, some SSSE3 instructions are slower
#define AV_CPU_FLAG_SSE4 0 x0100 ///< Penryn SSE4.1 functions
#define AV_CPU_FLAG_SSE42 0 x0200 ///< Nehalem SSE4.2 functions
#define AV_CPU_FLAG_AESNI 0 x80000 ///< Advanced Encryption Standard functions
#define AV_CPU_FLAG_CLMUL 0 x400000 ///< Carry-less Multiplication instruction
#define AV_CPU_FLAG_AVX 0 x4000 ///< AVX functions: requires OS support even if YMM registers aren't used
#define AV_CPU_FLAG_AVXSLOW 0 x8000000 ///< AVX supported, but slow when using YMM registers (e.g. Bulldozer)
#define AV_CPU_FLAG_XOP 0 x0400 ///< Bulldozer XOP functions
#define AV_CPU_FLAG_FMA4 0 x0800 ///< Bulldozer FMA4 functions
#define AV_CPU_FLAG_CMOV 0 x1000 ///< supports cmov instruction
#define AV_CPU_FLAG_AVX2 0 x8000 ///< AVX2 functions: requires OS support even if YMM registers aren't used
#define AV_CPU_FLAG_FMA3 0 x10000 ///< Haswell FMA3 functions
#define AV_CPU_FLAG_BMI1 0 x20000 ///< Bit Manipulation Instruction Set 1
#define AV_CPU_FLAG_BMI2 0 x40000 ///< Bit Manipulation Instruction Set 2
#define AV_CPU_FLAG_AVX512 0 x100000 ///< AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used
#define AV_CPU_FLAG_AVX512ICL 0 x200000 ///< F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ
#define AV_CPU_FLAG_SLOW_GATHER 0 x2000000 ///< CPU has slow gathers.
#define AV_CPU_FLAG_ALTIVEC 0 x0001 ///< standard
#define AV_CPU_FLAG_VSX 0 x0002 ///< ISA 2.06
#define AV_CPU_FLAG_POWER8 0 x0004 ///< 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_SME (1 <<12 )
#define AV_CPU_FLAG_ARM_CRC (1 <<13 )
#define AV_CPU_FLAG_SME2 (1 <<14 )
#define AV_CPU_FLAG_SME_I16I64 (1 <<15 )
#define AV_CPU_FLAG_SETEND (1 <<16 )
#define AV_CPU_FLAG_PMULL (1 <<17 )
#define AV_CPU_FLAG_EOR3 (1 <<18 )
#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 */
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