cpu.h File Reference

#include <stddef.h>
#include "version.h"

Go to the source code of this file.

Macros
#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.
#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.
#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_CLMUL   0x400000
	Carry-less Multiplication instruction.
#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_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)
#define	AV_CPU_FLAG_LSX   (1 << 0)
#define	AV_CPU_FLAG_LASX   (1 << 1)
#define	AV_CPU_FLAG_RVI   (1 << 0)
	I (full GPR bank)
#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.
#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)
#define	AV_CPU_FLAG_SIMD128   (1 << 0)

Functions
int	av_get_cpu_flags (void)
	Return the flags which specify extensions supported by the CPU.
void	av_force_cpu_flags (int flags)
	Disables cpu detection and forces the specified flags.
int	av_parse_cpu_caps (unsigned *flags, const char *s)
	Parse CPU caps from a string and update the given AV_CPU_* flags based on that.
int	av_cpu_count (void)
void	av_cpu_force_count (int count)
	Overrides cpu count detection and forces the specified count.
size_t	av_cpu_max_align (void)
	Get the maximum data alignment that may be required by FFmpeg.

Macro Definition Documentation

AV_CPU_FLAG_MMX

#define AV_CPU_FLAG_MMX   0x0001

standard MMX

Definition at line 32 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), check_chroma_mc(), check_idct(), check_idct(), check_idct_multiple(), check_ipred(), check_itxfm(), check_loop_filter(), check_loop_filter_intra(), check_loopfilter(), check_mc(), check_mc(), check_mspel_pixels(), check_yuv2packed1(), check_yuv2packed2(), check_yuv2packedX(), checkasm_check_h264qpel(), ff_get_cpu_flags_x86(), initFilter(), and test_motion().

AV_CPU_FLAG_MMXEXT

#define AV_CPU_FLAG_MMXEXT   0x0002

SSE integer functions or AMD MMX ext.

Definition at line 33 of file cpu.h.

Referenced by av_force_cpu_flags(), check_ipred(), check_itxfm(), check_loopfilter(), check_mc(), check_yuv2packed1(), check_yuv2packed2(), check_yuv2packedX(), checkasm_check_h264qpel(), checkasm_check_qpeldsp(), ff_get_cpu_flags_x86(), and ff_swscale().

AV_CPU_FLAG_MMX2

#define AV_CPU_FLAG_MMX2   0x0002

SSE integer functions or AMD MMX ext.

Definition at line 34 of file cpu.h.

Referenced by av_parse_cpu_caps().

AV_CPU_FLAG_3DNOW

#define AV_CPU_FLAG_3DNOW   0x0004

AMD 3DNOW.

Definition at line 35 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_llauddsp_init_x86().

AV_CPU_FLAG_SSE

#define AV_CPU_FLAG_SSE   0x0008

SSE functions.

Definition at line 36 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_SSE2

#define AV_CPU_FLAG_SSE2   0x0010

PIV SSE2 functions.

Definition at line 37 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), ff_get_cpu_max_align_x86(), ff_spatial_idwt_init_x86(), and ff_swscale().

AV_CPU_FLAG_SSE2SLOW

#define AV_CPU_FLAG_SSE2SLOW   0x40000000

SSE2 supported, but usually not faster than regular MMX/SSE (e.g.

Core1)

Definition at line 38 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_3DNOWEXT

#define AV_CPU_FLAG_3DNOWEXT   0x0020

AMD 3DNowExt.

Definition at line 40 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

AV_CPU_FLAG_SSE3

#define AV_CPU_FLAG_SSE3   0x0040

Prescott SSE3 functions.

Definition at line 41 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_SSE3SLOW

#define AV_CPU_FLAG_SSE3SLOW   0x20000000

SSE3 supported, but usually not faster than regular MMX/SSE (e.g.

Core1)

Definition at line 42 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_SSSE3

#define AV_CPU_FLAG_SSSE3   0x0080

Conroe SSSE3 functions.

Definition at line 44 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), ff_get_cpu_max_align_x86(), ff_spatial_idwt_init_x86(), and ff_v210_x86_init().

AV_CPU_FLAG_SSSE3SLOW

#define AV_CPU_FLAG_SSSE3SLOW   0x4000000

SSSE3 supported, but usually not faster.

Definition at line 45 of file cpu.h.

Referenced by ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_ATOM

#define AV_CPU_FLAG_ATOM   0x10000000

Atom processor, some SSSE3 instructions are slower.

Definition at line 46 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_x86(), ff_audiodsp_init_x86(), ff_get_cpu_flags_x86(), ff_get_cpu_max_align_x86(), and ff_volume_init_x86().

AV_CPU_FLAG_SSE4

#define AV_CPU_FLAG_SSE4   0x0100

Penryn SSE4.1 functions.

Definition at line 47 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_SSE42

#define AV_CPU_FLAG_SSE42   0x0200

Nehalem SSE4.2 functions.

Definition at line 48 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), ff_get_cpu_max_align_x86(), and ff_llauddsp_init_x86().

AV_CPU_FLAG_AESNI

#define AV_CPU_FLAG_AESNI   0x80000

Advanced Encryption Standard functions.

Definition at line 49 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_CLMUL

#define AV_CPU_FLAG_CLMUL   0x400000

Carry-less Multiplication instruction.

Definition at line 50 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

AV_CPU_FLAG_AVX

#define AV_CPU_FLAG_AVX   0x4000

AVX functions: requires OS support even if YMM registers aren't used.

Definition at line 51 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), davs2_init(), ff_get_cpu_flags_x86(), ff_get_cpu_max_align_x86(), and ff_v210_x86_init().

AV_CPU_FLAG_AVXSLOW

#define AV_CPU_FLAG_AVXSLOW   0x8000000

AVX supported, but slow when using YMM registers (e.g. Bulldozer)

Definition at line 52 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_ac3dsp_set_downmix_x86(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_XOP

#define AV_CPU_FLAG_XOP   0x0400

Bulldozer XOP functions.

Definition at line 53 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_FMA4

#define AV_CPU_FLAG_FMA4   0x0800

Bulldozer FMA4 functions.

Definition at line 54 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_CMOV

#define AV_CPU_FLAG_CMOV   0x1000

supports cmov instruction

Definition at line 55 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

AV_CPU_FLAG_AVX2

#define AV_CPU_FLAG_AVX2   0x8000

AVX2 functions: requires OS support even if YMM registers aren't used.

Definition at line 56 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), davs2_init(), ff_get_cpu_flags_x86(), ff_get_cpu_max_align_x86(), and ff_v210_x86_init().

AV_CPU_FLAG_FMA3

#define AV_CPU_FLAG_FMA3   0x10000

Haswell FMA3 functions.

Definition at line 57 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_BMI1

#define AV_CPU_FLAG_BMI1   0x20000

Bit Manipulation Instruction Set 1.

Definition at line 58 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

AV_CPU_FLAG_BMI2

#define AV_CPU_FLAG_BMI2   0x40000

Bit Manipulation Instruction Set 2.

Definition at line 59 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_mlpdsp_init_x86().

AV_CPU_FLAG_AVX512

#define AV_CPU_FLAG_AVX512   0x100000

AVX-512 functions: requires OS support even if YMM/ZMM registers aren't used.

Definition at line 60 of file cpu.h.

Referenced by av_force_cpu_flags(), av_parse_cpu_caps(), ff_get_cpu_flags_x86(), and ff_get_cpu_max_align_x86().

AV_CPU_FLAG_AVX512ICL

#define AV_CPU_FLAG_AVX512ICL   0x200000

F/CD/BW/DQ/VL/VNNI/IFMA/VBMI/VBMI2/VPOPCNTDQ/BITALG/GFNI/VAES/VPCLMULQDQ.

Definition at line 61 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

AV_CPU_FLAG_SLOW_GATHER

#define AV_CPU_FLAG_SLOW_GATHER   0x2000000

CPU has slow gathers.

Definition at line 62 of file cpu.h.

Referenced by av_parse_cpu_caps(), check_filter_h_4x4(), ff_get_cpu_flags_x86(), ff_shuffle_filter_coefficients(), and ff_sws_init_swscale_x86().

AV_CPU_FLAG_ALTIVEC

#define AV_CPU_FLAG_ALTIVEC   0x0001

standard

Definition at line 64 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_ppc(), ff_get_cpu_max_align_ppc(), ff_get_unscaled_swscale_ppc(), ff_sws_init_swscale_ppc(), ff_yuv2rgb_init_ppc(), and ff_yuv2rgb_init_tables_ppc().

AV_CPU_FLAG_VSX

#define AV_CPU_FLAG_VSX   0x0002

ISA 2.06.

Definition at line 65 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_ppc(), ff_get_cpu_max_align_ppc(), and ff_sws_init_swscale_vsx().

AV_CPU_FLAG_POWER8

#define AV_CPU_FLAG_POWER8   0x0004

ISA 2.07.

Definition at line 66 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_ppc(), ff_get_cpu_max_align_ppc(), and ff_sws_init_swscale_vsx().

AV_CPU_FLAG_ARMV5TE

#define AV_CPU_FLAG_ARMV5TE   (1 << 0)

Definition at line 68 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_arm().

AV_CPU_FLAG_ARMV6

#define AV_CPU_FLAG_ARMV6   (1 << 1)

Definition at line 69 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_arm().

AV_CPU_FLAG_ARMV6T2

#define AV_CPU_FLAG_ARMV6T2   (1 << 2)

Definition at line 70 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_arm().

AV_CPU_FLAG_VFP

#define AV_CPU_FLAG_VFP   (1 << 3)

Definition at line 71 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_arm().

AV_CPU_FLAG_VFPV3

#define AV_CPU_FLAG_VFPV3   (1 << 4)

Definition at line 72 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_arm().

AV_CPU_FLAG_NEON

#define AV_CPU_FLAG_NEON   (1 << 5)

Definition at line 73 of file cpu.h.

Referenced by aarch64_compile(), av_parse_cpu_caps(), ff_get_cpu_flags_aarch64(), ff_get_cpu_flags_arm(), ff_get_cpu_max_align_aarch64(), and ff_get_cpu_max_align_arm().

AV_CPU_FLAG_ARMV8

#define AV_CPU_FLAG_ARMV8   (1 << 6)

Definition at line 74 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_VFP_VM

#define AV_CPU_FLAG_VFP_VM   (1 << 7)

VFPv2 vector mode, deprecated in ARMv7-A and unavailable in various CPUs implementations.

Definition at line 75 of file cpu.h.

Referenced by av_parse_cpu_caps().

AV_CPU_FLAG_DOTPROD

#define AV_CPU_FLAG_DOTPROD   (1 << 8)

Definition at line 76 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_I8MM

#define AV_CPU_FLAG_I8MM   (1 << 9)

Definition at line 77 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_SVE

#define AV_CPU_FLAG_SVE   (1 <<10)

Definition at line 78 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_aarch64(), and main().

AV_CPU_FLAG_SVE2

#define AV_CPU_FLAG_SVE2   (1 <<11)

Definition at line 79 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_SME

#define AV_CPU_FLAG_SME   (1 <<12)

Definition at line 80 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_aarch64(), and main().

AV_CPU_FLAG_ARM_CRC

#define AV_CPU_FLAG_ARM_CRC   (1 <<13)

Definition at line 81 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_SME2

#define AV_CPU_FLAG_SME2   (1 <<14)

Definition at line 82 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_SME_I16I64

#define AV_CPU_FLAG_SME_I16I64   (1 <<15)

Definition at line 83 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_SETEND

#define AV_CPU_FLAG_SETEND   (1 <<16)

Definition at line 84 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_arm().

AV_CPU_FLAG_PMULL

#define AV_CPU_FLAG_PMULL   (1 <<17)

Definition at line 85 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_EOR3

#define AV_CPU_FLAG_EOR3   (1 <<18)

Definition at line 86 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_aarch64().

AV_CPU_FLAG_MMI

#define AV_CPU_FLAG_MMI   (1 << 0)

Definition at line 88 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_max_align_mips().

AV_CPU_FLAG_MSA

#define AV_CPU_FLAG_MSA   (1 << 1)

Definition at line 89 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_max_align_mips().

AV_CPU_FLAG_LSX

#define AV_CPU_FLAG_LSX   (1 << 0)

Definition at line 92 of file cpu.h.

Referenced by av_parse_cpu_caps(), cpu_flags_getauxval(), and ff_get_cpu_max_align_loongarch().

AV_CPU_FLAG_LASX

#define AV_CPU_FLAG_LASX   (1 << 1)

Definition at line 93 of file cpu.h.

Referenced by av_parse_cpu_caps(), cpu_flags_getauxval(), and ff_get_cpu_max_align_loongarch().

AV_CPU_FLAG_RVI

#define AV_CPU_FLAG_RVI   (1 << 0)

I (full GPR bank)

Definition at line 96 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_riscv(), ff_pixblockdsp_init_riscv(), and ff_vc1dsp_init_riscv().

AV_CPU_FLAG_RVV_I32

#define AV_CPU_FLAG_RVV_I32   (1 << 3)

Vectors of 8/16/32-bit int's *‍/.

Definition at line 97 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_riscv(), ff_alacdsp_init_riscv(), ff_audiodsp_init_riscv(), ff_blackdetect_get_fn_riscv(), ff_bswapdsp_init_riscv(), ff_exrdsp_init_riscv(), ff_fixed_dsp_init_riscv(), ff_flacdsp_init_riscv(), ff_g722dsp_init_riscv(), ff_get_cpu_flags_riscv(), ff_h263dsp_init_riscv(), ff_h264chroma_init_riscv(), ff_h264dsp_init_riscv(), ff_h264qpel_init_riscv(), ff_hevc_dsp_init_riscv(), ff_huffyuvdsp_init_riscv(), ff_jpeg2000dsp_init_riscv(), ff_llauddsp_init_riscv(), ff_llviddsp_init_riscv(), ff_llvidencdsp_init_riscv(), ff_me_cmp_init_riscv(), ff_mpegvideoencdsp_init_riscv(), ff_mpv_unquantize_init_riscv(), ff_pixblockdsp_init_riscv(), ff_pixelutils_init_riscv(), ff_psdsp_init_riscv(), ff_rv34dsp_init_riscv(), ff_rv40dsp_init_riscv(), ff_svq1enc_init_riscv(), ff_sws_init_range_convert_riscv(), ff_sws_init_swscale_riscv(), ff_takdsp_init_riscv(), ff_utvideodsp_init_riscv(), ff_vc1dsp_init_riscv(), ff_vorbisdsp_init_riscv(), ff_vp78dsp_init_riscv(), ff_vp7dsp_init_riscv(), ff_vp8dsp_init_riscv(), ff_vvc_dsp_init_riscv(), main(), PRED8x8(), rgb2rgb_init_riscv(), vp9dsp_intrapred_init_riscv(), and vp9dsp_mc_init_riscv().

AV_CPU_FLAG_RVV_F32

#define AV_CPU_FLAG_RVV_F32   (1 << 4)

Vectors of float's *‍/.

Definition at line 98 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_aacenc_dsp_init_riscv(), ff_ac3dsp_init_riscv(), ff_audiodsp_init_riscv(), ff_float_dsp_init_riscv(), ff_fmt_convert_init_riscv(), ff_get_cpu_flags_riscv(), ff_jpeg2000dsp_init_riscv(), ff_opus_dsp_init_riscv(), ff_psdsp_init_riscv(), and ff_sbrdsp_init_riscv().

AV_CPU_FLAG_RVV_I64

#define AV_CPU_FLAG_RVV_I64   (1 << 5)

Vectors of 64-bit int's *‍/.

Definition at line 99 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_riscv(), ff_blockdsp_init_riscv(), ff_fixed_dsp_init_riscv(), ff_flacdsp_init_riscv(), ff_get_cpu_flags_riscv(), ff_h264dsp_init_riscv(), ff_idctdsp_init_riscv(), ff_mpegvideoencdsp_init_riscv(), ff_pixblockdsp_init_riscv(), ff_psdsp_init_riscv(), ff_vc1dsp_init_riscv(), ff_vp7dsp_init_riscv(), ff_vp8dsp_init_riscv(), and vp9dsp_intrapred_init_riscv().

AV_CPU_FLAG_RVV_F64

#define AV_CPU_FLAG_RVV_F64   (1 << 6)

Vectors of double's.

Definition at line 100 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_afir_init_riscv(), ff_float_dsp_init_riscv(), ff_get_cpu_flags_riscv(), ff_init_lls_riscv(), and ff_lpc_init_riscv().

AV_CPU_FLAG_RVB_BASIC

#define AV_CPU_FLAG_RVB_BASIC   (1 << 7)

Basic bit-manipulations.

Definition at line 101 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_riscv(), ff_bswapdsp_init_riscv(), ff_get_cpu_flags_riscv(), ff_h264dsp_init_riscv(), ff_llvidencdsp_init_riscv(), ff_vc1dsp_init_riscv(), and rgb2rgb_init_riscv().

AV_CPU_FLAG_RV_ZVBB

#define AV_CPU_FLAG_RV_ZVBB   (1 << 9)

Vector basic bit-manipulations.

Definition at line 102 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_riscv(), ff_bswapdsp_init_riscv(), and ff_get_cpu_flags_riscv().

AV_CPU_FLAG_RV_MISALIGNED

#define AV_CPU_FLAG_RV_MISALIGNED   (1 <<10)

Fast misaligned accesses.

Definition at line 103 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_riscv(), ff_pixblockdsp_init_riscv(), ff_vp78dsp_init_riscv(), and vp9dsp_mc_init_riscv().

AV_CPU_FLAG_RVB

#define AV_CPU_FLAG_RVB   (1 <<11)

B (bit manipulations)

Definition at line 104 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_aacenc_dsp_init_riscv(), ff_ac3dsp_init_riscv(), ff_afir_init_riscv(), ff_alacdsp_init_riscv(), ff_audiodsp_init_riscv(), ff_blackdetect_get_fn_riscv(), ff_bswapdsp_init_riscv(), ff_exrdsp_init_riscv(), ff_fixed_dsp_init_riscv(), ff_flacdsp_init_riscv(), ff_float_dsp_init_riscv(), ff_fmt_convert_init_riscv(), ff_get_cpu_flags_riscv(), ff_h264chroma_init_riscv(), ff_h264dsp_init_riscv(), ff_hevc_dsp_init_riscv(), ff_huffyuvdsp_init_riscv(), ff_init_lls_riscv(), ff_jpeg2000dsp_init_riscv(), ff_llauddsp_init_riscv(), ff_lpc_init_riscv(), ff_mpegvideoencdsp_init_riscv(), ff_mpv_unquantize_init_riscv(), ff_opus_dsp_init_riscv(), ff_psdsp_init_riscv(), ff_rv40dsp_init_riscv(), ff_sbrdsp_init_riscv(), ff_svq1enc_init_riscv(), ff_sws_init_range_convert_riscv(), ff_sws_init_swscale_riscv(), ff_takdsp_init_riscv(), ff_utvideodsp_init_riscv(), ff_vorbisdsp_init_riscv(), ff_vp78dsp_init_riscv(), ff_vp7dsp_init_riscv(), ff_vvc_dsp_init_riscv(), PRED8x8(), and rgb2rgb_init_riscv().

AV_CPU_FLAG_SIMD128

#define AV_CPU_FLAG_SIMD128   (1 << 0)

Definition at line 107 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_wasm().

Function Documentation

av_get_cpu_flags()

int av_get_cpu_flags

(

void

)

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.

Definition at line 109 of file cpu.c.

Referenced by aarch64_compile(), check_filter_h_4x4(), compile_x86(), D(), davs2_init(), define_8tap_2d_funcs(), define_8tap_2d_funcs(), ff_aacenc_dsp_init_aarch64(), ff_aacenc_dsp_init_riscv(), ff_aacenc_dsp_init_x86(), ff_ac3dsp_init_aarch64(), ff_ac3dsp_init_arm(), ff_ac3dsp_init_riscv(), ff_ac3dsp_init_x86(), ff_ac3dsp_set_downmix_x86(), ff_afir_init_riscv(), ff_afir_init_x86(), ff_alacdsp_init_riscv(), ff_alacdsp_init_x86(), ff_anlmdn_init_x86(), ff_atadenoise_init_x86(), ff_audiodsp_init_arm(), ff_audiodsp_init_ppc(), ff_audiodsp_init_riscv(), ff_audiodsp_init_x86(), ff_blackdetect_get_fn_riscv(), ff_blackdetect_get_fn_x86(), ff_blend_init_x86(), ff_blockdsp_init_arm(), ff_blockdsp_init_mips(), ff_blockdsp_init_ppc(), ff_blockdsp_init_riscv(), ff_blockdsp_init_x86(), ff_bswapdsp_init_riscv(), ff_bswapdsp_init_x86(), ff_bwdif_init_aarch64(), ff_bwdif_init_x86(), ff_cavsdsp_init_x86(), ff_celt_pvq_init_x86(), ff_cfhddsp_init_x86(), ff_cfhdencdsp_init_x86(), ff_color_detect_dsp_init_aarch64(), ff_color_detect_dsp_init_x86(), ff_colorspacedsp_x86_init(), ff_convolution_init_x86(), ff_crc_get_table_aarch64(), ff_crc_get_table_x86(), ff_crc_init_aarch64(), ff_crc_init_x86(), ff_dcadsp_init_aarch64(), ff_dcadsp_init_x86(), ff_dct_encode_init_x86(), ff_diracdsp_init_x86(), ff_dnxhdenc_init_x86(), ff_dwt_init_x86(), ff_ebur128_init_x86(), ff_eq_init_x86(), ff_exrdsp_init_riscv(), ff_exrdsp_init_x86(), ff_fdctdsp_init_aarch64(), ff_fdctdsp_init_ppc(), ff_fdctdsp_init_x86(), ff_fixed_dsp_init_riscv(), ff_fixed_dsp_init_x86(), ff_flacdsp_init_riscv(), ff_flacdsp_init_x86(), ff_flacencdsp_init_x86(), ff_float_dsp_init_aarch64(), ff_float_dsp_init_arm(), ff_float_dsp_init_ppc(), ff_float_dsp_init_riscv(), ff_float_dsp_init_x86(), ff_fmt_convert_init_aarch64(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_ppc(), ff_fmt_convert_init_riscv(), ff_fmt_convert_init_x86(), ff_framerate_init_x86(), ff_fsppdsp_init_x86(), ff_g722dsp_init_arm(), ff_g722dsp_init_riscv(), ff_g722dsp_init_x86(), ff_gblur_init_x86(), ff_get_cpu_max_align_aarch64(), ff_get_cpu_max_align_arm(), ff_get_cpu_max_align_loongarch(), ff_get_cpu_max_align_mips(), ff_get_cpu_max_align_ppc(), ff_get_cpu_max_align_x86(), ff_get_unscaled_swscale_aarch64(), ff_get_unscaled_swscale_ppc(), ff_gradfun_init_x86(), ff_h263dsp_init_mips(), ff_h263dsp_init_riscv(), ff_h263dsp_init_x86(), ff_h264_pred_init_aarch64(), ff_h264_pred_init_arm(), ff_h264_pred_init_loongarch(), ff_h264_pred_init_mips(), ff_h264chroma_init_aarch64(), ff_h264chroma_init_arm(), ff_h264chroma_init_loongarch(), ff_h264chroma_init_mips(), ff_h264chroma_init_ppc(), ff_h264chroma_init_riscv(), ff_h264chroma_init_x86(), ff_h264dsp_init_aarch64(), ff_h264dsp_init_arm(), ff_h264dsp_init_loongarch(), ff_h264dsp_init_mips(), ff_h264dsp_init_ppc(), ff_h264dsp_init_riscv(), ff_h264dsp_init_x86(), ff_h264qpel_init_aarch64(), ff_h264qpel_init_arm(), ff_h264qpel_init_loongarch(), ff_h264qpel_init_mips(), ff_h264qpel_init_ppc(), ff_h264qpel_init_riscv(), ff_h264qpel_init_x86(), ff_hevc_dsp_init_aarch64(), ff_hevc_dsp_init_arm(), ff_hevc_dsp_init_loongarch(), ff_hevc_dsp_init_mips(), ff_hevc_dsp_init_ppc(), ff_hevc_dsp_init_riscv(), ff_hevc_dsp_init_wasm(), ff_hevc_dsp_init_x86(), ff_hevc_pred_init_aarch64(), ff_hevc_pred_init_mips(), ff_hflip_init_x86(), ff_hpeldsp_init_aarch64(), ff_hpeldsp_init_arm(), ff_hpeldsp_init_loongarch(), ff_hpeldsp_init_mips(), ff_hpeldsp_init_ppc(), ff_hpeldsp_init_x86(), ff_huffyuvdsp_init_aarch64(), ff_huffyuvdsp_init_riscv(), ff_huffyuvdsp_init_x86(), ff_huffyuvencdsp_init_x86(), ff_idctdsp_init_aarch64(), ff_idctdsp_init_arm(), ff_idctdsp_init_loongarch(), ff_idctdsp_init_mips(), ff_idctdsp_init_ppc(), ff_idctdsp_init_riscv(), ff_idctdsp_init_x86(), ff_image_copy_plane_uc_from_x86(), ff_init_aes_x86(), ff_init_lls_riscv(), ff_init_lls_x86(), ff_jpeg2000dsp_init_riscv(), ff_jpeg2000dsp_init_x86(), ff_limiter_init_x86(), ff_llauddsp_init_arm(), ff_llauddsp_init_riscv(), ff_llauddsp_init_x86(), ff_llviddsp_init_ppc(), ff_llviddsp_init_riscv(), ff_llviddsp_init_x86(), ff_llvidencdsp_init_riscv(), ff_llvidencdsp_init_x86(), ff_lpc_init_riscv(), ff_lpc_init_x86(), ff_lut3d_init_x86(), ff_maskedclamp_init_x86(), ff_maskedmerge_init_x86(), ff_me_cmp_init_aarch64(), ff_me_cmp_init_arm(), ff_me_cmp_init_mips(), ff_me_cmp_init_ppc(), ff_me_cmp_init_riscv(), ff_me_cmp_init_x86(), ff_mlpdsp_init_arm(), ff_mlpdsp_init_x86(), ff_mpadsp_init_aarch64(), ff_mpadsp_init_arm(), ff_mpadsp_init_ppc(), ff_mpadsp_init_x86(), ff_mpeg4videodsp_init_ppc(), ff_mpeg4videodsp_init_x86(), ff_mpegvideoencdsp_init_aarch64(), ff_mpegvideoencdsp_init_arm(), ff_mpegvideoencdsp_init_mips(), ff_mpegvideoencdsp_init_ppc(), ff_mpegvideoencdsp_init_riscv(), ff_mpegvideoencdsp_init_x86(), ff_mpv_unquantize_init_arm(), ff_mpv_unquantize_init_mips(), ff_mpv_unquantize_init_neon(), ff_mpv_unquantize_init_ppc(), ff_mpv_unquantize_init_riscv(), ff_mpv_unquantize_init_x86(), ff_nlmeans_init_aarch64(), ff_nlmeans_init_x86(), ff_noise_init_x86(), ff_opus_dsp_init_aarch64(), ff_opus_dsp_init_riscv(), ff_opus_dsp_init_x86(), ff_overlay_init_x86(), ff_pixblockdsp_init_aarch64(), ff_pixblockdsp_init_arm(), ff_pixblockdsp_init_mips(), ff_pixblockdsp_init_ppc(), ff_pixblockdsp_init_riscv(), ff_pixblockdsp_init_x86(), ff_pixelutils_init_riscv(), ff_pixelutils_sad_init_aarch64(), ff_pixelutils_sad_init_arm(), ff_pixelutils_sad_init_mips(), ff_pixelutils_sad_init_x86(), ff_pngdsp_init_aarch64(), ff_pngdsp_init_x86(), ff_pp7dsp_init_x86(), ff_proresdsp_init_x86(), ff_psdsp_init_aarch64(), ff_psdsp_init_arm(), ff_psdsp_init_riscv(), ff_psdsp_init_x86(), ff_psnr_init_x86(), ff_pullup_init_x86(), ff_qpeldsp_init_mips(), ff_qpeldsp_init_x86(), ff_removegrain_init_x86(), ff_rv34dsp_init_arm(), ff_rv34dsp_init_riscv(), ff_rv34dsp_init_x86(), ff_rv40dsp_init_aarch64(), ff_rv40dsp_init_arm(), ff_rv40dsp_init_riscv(), ff_rv40dsp_init_x86(), ff_sbcdsp_init_arm(), ff_sbcdsp_init_x86(), ff_sbrdsp_init_aarch64(), ff_sbrdsp_init_arm(), ff_sbrdsp_init_riscv(), ff_sbrdsp_init_x86(), ff_scene_sad_get_fn_x86(), ff_showcqt_init_x86(), ff_shuffle_filter_coefficients(), ff_sobel_init_x86(), ff_spatial_idwt_init_x86(), ff_spp_init_x86(), ff_ssim_init_x86(), ff_stereo3d_init_x86(), ff_svq1enc_init_ppc(), ff_svq1enc_init_riscv(), ff_svq1enc_init_x86(), ff_sws_init_range_convert_aarch64(), ff_sws_init_range_convert_loongarch(), ff_sws_init_range_convert_riscv(), ff_sws_init_range_convert_x86(), ff_sws_init_single_context(), ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_loongarch(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_riscv(), ff_sws_init_swscale_vsx(), ff_sws_init_swscale_x86(), ff_sws_init_xyzdsp_aarch64(), ff_sws_uop_lookup(), ff_swscale(), ff_synth_filter_init_aarch64(), ff_synth_filter_init_arm(), ff_synth_filter_init_x86(), ff_takdsp_init_riscv(), ff_takdsp_init_x86(), ff_threshold_init_x86(), ff_tinterlace_init_x86(), ff_transpose_init_x86(), ff_ttadsp_init_x86(), ff_ttaencdsp_init_x86(), ff_tx_decompose_length(), ff_tx_init_subtx(), ff_utvideodsp_init_riscv(), ff_utvideodsp_init_x86(), ff_v210_x86_init(), ff_v210enc_init_x86(), ff_v360_init_x86(), ff_vc1dsp_init_aarch64(), ff_vc1dsp_init_arm(), ff_vc1dsp_init_loongarch(), ff_vc1dsp_init_mips(), ff_vc1dsp_init_ppc(), ff_vc1dsp_init_riscv(), ff_vc1dsp_init_x86(), ff_videodsp_init_aarch64(), ff_videodsp_init_arm(), ff_videodsp_init_mips(), ff_videodsp_init_x86(), ff_volume_init_x86(), ff_vorbisdsp_init_aarch64(), ff_vorbisdsp_init_arm(), ff_vorbisdsp_init_ppc(), ff_vorbisdsp_init_riscv(), ff_vorbisdsp_init_x86(), ff_vp3dsp_init_arm(), ff_vp3dsp_init_mips(), ff_vp3dsp_init_ppc(), ff_vp3dsp_init_x86(), ff_vp6dsp_init_x86(), ff_vp78dsp_init_aarch64(), ff_vp78dsp_init_arm(), ff_vp78dsp_init_ppc(), ff_vp78dsp_init_riscv(), ff_vp78dsp_init_x86(), ff_vp7dsp_init_riscv(), ff_vp8dsp_init_aarch64(), ff_vp8dsp_init_arm(), ff_vp8dsp_init_loongarch(), ff_vp8dsp_init_mips(), ff_vp8dsp_init_riscv(), ff_vp8dsp_init_x86(), ff_vp9dsp_init_16bpp_x86(), ff_vp9dsp_init_loongarch(), ff_vp9dsp_init_mips(), ff_vvc_dsp_init_aarch64(), ff_vvc_dsp_init_riscv(), ff_vvc_dsp_init_x86(), ff_w3fdif_init_x86(), ff_wmv2dsp_init_mips(), ff_xvid_idct_init_mips(), ff_xvid_idct_init_x86(), ff_yadif_init_x86(), ff_yuv2rgb_init_aarch64(), ff_yuv2rgb_init_loongarch(), ff_yuv2rgb_init_ppc(), ff_yuv2rgb_init_tables_ppc(), ff_yuv2rgb_init_x86(), FUNC_MAIN_DECL_16bit(), get_mmsize(), lf_mix_fns(), main(), main(), opt_cpuflags(), parse_options(), PRED4x4(), PRED8x8(), rgb2rgb_init_aarch64(), rgb2rgb_init_loongarch(), rgb2rgb_init_riscv(), rgb2rgb_init_x86(), swri_audio_convert_init_aarch64(), swri_audio_convert_init_arm(), swri_audio_convert_init_x86(), swri_resample_dsp_aarch64_init(), swri_resample_dsp_arm_init(), swri_resample_dsp_x86_init(), thread_main(), translate_shuffle(), vp9dsp_intrapred_init_riscv(), vp9dsp_itxfm_init_aarch64(), vp9dsp_itxfm_init_aarch64(), vp9dsp_itxfm_init_arm(), vp9dsp_itxfm_init_arm(), vp9dsp_loopfilter_init_aarch64(), vp9dsp_loopfilter_init_aarch64(), vp9dsp_loopfilter_init_arm(), and vp9dsp_mc_init_riscv().

av_force_cpu_flags()

void av_force_cpu_flags

(

int

flags

)

Disables cpu detection and forces the specified flags.

-1 is a special case that disables forcing of specific flags.

Definition at line 81 of file cpu.c.

Referenced by LLVMFuzzerTestOneInput(), main(), opt_cpuflags(), parse_options(), and set_cpu_flags().

av_parse_cpu_caps()

int av_parse_cpu_caps	(	unsigned *	flags,
		const char *	s )

Parse CPU caps from a string and update the given AV_CPU_* flags based on that.

Returns

negative on error.

Definition at line 119 of file cpu.c.

Referenced by main(), opt_cpuflags(), and parse_options().

av_cpu_count()

int av_cpu_count

(

void

)

Returns

the number of logical CPU cores present.

Definition at line 228 of file cpu.c.

Referenced by aom_config(), aom_init(), dnn_load_model_tf(), dnn_load_model_th(), ff_frame_thread_encoder_init(), ff_frame_thread_init(), ff_libjxl_get_threadcount(), ff_slice_thread_init(), get_conf(), get_conf(), init_model_ov(), libuavs3d_init(), main(), svt_jpegxs_dec_init(), svt_jpegxs_enc_init(), vpx_init(), vpx_init(), and vvc_decode_init().

av_cpu_force_count()

void av_cpu_force_count

(

int

count

)

Overrides cpu count detection and forces the specified count.

Count < 1 disables forcing of specific count.

Definition at line 282 of file cpu.c.

Referenced by opt_cpucount().

av_cpu_max_align()

size_t av_cpu_max_align

(

void

)

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.

Definition at line 287 of file cpu.c.

Referenced by checkasm_check_huffyuvencdsp(), checkasm_check_llviddsp(), config_eq_output(), config_input(), config_input(), config_output(), config_output(), config_output(), config_props(), ff_default_get_audio_buffer(), ff_default_get_video_buffer(), frame_alloc_planes_ref(), init_segment(), magy_encode_init(), op_pass_setup(), predict_slice(), sq_frame_samples(), and sws_frame_setup().