libavutil/cpu.h File Reference

#include "attributes.h"

Go to the source code of this file.

Defines

#define AV_CPU_FLAG_FORCE   0x80000000

#define AV_CPU_FLAG_MMX   0x0001

standard MMX

#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.

#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.

#define AV_CPU_FLAG_SSSE3   0x0080

Conroe SSSE3 functions.

#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_AVX   0x4000

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

#define AV_CPU_FLAG_CMOV   0x1000000

supports cmov instruction

#define AV_CPU_FLAG_XOP   0x0400

Bulldozer XOP functions.

#define AV_CPU_FLAG_FMA4   0x0800

Bulldozer FMA4 functions.

#define AV_CPU_FLAG_ALTIVEC   0x0001

standard

#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)

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.

attribute_deprecated void av_set_cpu_flags_mask (int mask)

Set a mask on flags returned by av_get_cpu_flags().

int av_parse_cpu_flags (const char *s)

Parse CPU flags from a string.

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 ff_get_cpu_flags_arm (void)

int ff_get_cpu_flags_ppc (void)

This function MAY rely on signal() or fork() in order to make sure AltiVec is present.

int ff_get_cpu_flags_x86 (void)

Define Documentation

#define AV_CPU_FLAG_3DNOW 0x0004

AMD 3DNOW.

Definition at line 31 of file cpu.h.

Referenced by av_parse_cpu_caps(), DECLARE_ASM_CONST(), dsputil_init_ssse3(), ff_ac3dsp_init_x86(), ff_cavsdsp_init_mmx(), ff_dsputil_init_mmx(), ff_dsputil_init_pix_mmx(), ff_dsputilenc_init_mmx(), ff_fft_init_mmx(), ff_fmt_convert_init_x86(), ff_get_cpu_flags_x86(), ff_rv40dsp_init_x86(), ff_vc1dsp_init_mmx(), and sws_init_context().

#define AV_CPU_FLAG_3DNOWEXT 0x0020

AMD 3DNowExt.

Definition at line 35 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_dsputil_init_mmx(), ff_fft_init_mmx(), ff_fmt_convert_init_x86(), and ff_get_cpu_flags_x86().

#define AV_CPU_FLAG_ALTIVEC 0x0001

standard

Definition at line 46 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), ff_dsputil_h264_init_ppc(), ff_dsputil_init_ppc(), ff_get_cpu_flags_ppc(), ff_h264dsp_init_ppc(), ff_MPV_common_init_altivec(), ff_sws_init_swScale_altivec(), ff_swscale_get_unscaled_altivec(), ff_vc1dsp_init_altivec(), ff_vp8dsp_init_altivec(), ff_yuv2rgb_init_altivec(), initFilter(), sws_init_context(), sws_setColorspaceDetails(), and xvid_encode_init().

#define AV_CPU_FLAG_ARMV5TE (1 << 0)

Definition at line 48 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), and ff_get_cpu_flags_arm().

#define AV_CPU_FLAG_ARMV6 (1 << 1)

Definition at line 49 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), and ff_get_cpu_flags_arm().

#define AV_CPU_FLAG_ARMV6T2 (1 << 2)

Definition at line 50 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), and ff_get_cpu_flags_arm().

#define AV_CPU_FLAG_ATOM 0x10000000

Atom processor, some SSSE3 instructions are slower.

Definition at line 39 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), dsputil_init_sse2(), dsputil_init_ssse3(), ff_ac3dsp_init_x86(), and ff_get_cpu_flags_x86().

#define AV_CPU_FLAG_AVX 0x4000

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

Definition at line 42 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_audio_convert_init_x86(), ff_audio_mix_init_x86(), ff_dsputil_init_mmx(), ff_fft_init_mmx(), ff_get_cpu_flags_x86(), ff_h264dsp_init_x86(), ff_mpadsp_init_mmx(), ff_proresdsp_x86_init(), ff_sws_init_swScale_mmx(), PRED4x4(), swri_audio_convert_init_x86(), and v210_x86_init().

#define AV_CPU_FLAG_CMOV 0x1000000

supports cmov instruction

Definition at line 43 of file cpu.h.

Referenced by ff_get_cpu_flags_x86(), ff_h264dsp_init_x86(), and PRED4x4().

#define AV_CPU_FLAG_FMA4 0x0800

Bulldozer FMA4 functions.

Definition at line 45 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

#define AV_CPU_FLAG_FORCE 0x80000000

Definition at line 26 of file cpu.h.

Referenced by ff_dsputil_init_ppc(), and main().

#define AV_CPU_FLAG_MMX 0x0001

#define AV_CPU_FLAG_MMX2 0x0002

SSE integer functions or AMD MMX ext.

Definition at line 30 of file cpu.h.

Referenced by av_parse_cpu_caps(), DECLARE_ASM_CONST(), ff_ac3dsp_init_x86(), ff_cavsdsp_init_mmx(), ff_diracdsp_init_mmx(), ff_dsputil_init_mmx(), ff_dsputil_init_pix_mmx(), ff_dsputilenc_init_mmx(), ff_dwt_init_x86(), ff_get_cpu_flags_x86(), ff_h264dsp_init_x86(), ff_MPV_common_init_mmx(), ff_pngdsp_init_x86(), ff_rv34dsp_init_x86(), ff_rv40dsp_init_x86(), ff_sws_init_swScale_mmx(), ff_vc1dsp_init_mmx(), ff_vp8dsp_init_x86(), init(), main(), PRED4x4(), sws_init_context(), and swScale().

#define AV_CPU_FLAG_NEON (1 << 5)

Definition at line 53 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), and ff_get_cpu_flags_arm().

#define AV_CPU_FLAG_SSE 0x0008

SSE functions.

Definition at line 32 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_x86(), ff_audio_mix_init_x86(), ff_dsputil_init_mmx(), ff_fft_init_mmx(), ff_fmt_convert_init_x86(), ff_get_cpu_flags_x86(), ff_mpadsp_init_mmx(), ff_sbrdsp_init_x86(), ff_vp8dsp_init_x86(), PRED4x4(), and swri_audio_convert_init_x86().

#define AV_CPU_FLAG_SSE2 0x0010

#define AV_CPU_FLAG_SSE2SLOW 0x40000000

SSE2 supported, but usually not faster.

Definition at line 34 of file cpu.h.

Referenced by av_parse_cpu_caps(), dsputil_init_sse2(), ff_ac3dsp_init_x86(), ff_get_cpu_flags_x86(), ff_lpc_init_x86(), and ff_vp8dsp_init_x86().

#define AV_CPU_FLAG_SSE3 0x0040

Prescott SSE3 functions.

Definition at line 36 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_get_cpu_flags_x86(), ff_mpadsp_init_mmx(), and ff_sws_init_swScale_mmx().

#define AV_CPU_FLAG_SSE3SLOW 0x20000000

SSE3 supported, but usually not faster.

Definition at line 37 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

#define AV_CPU_FLAG_SSE4 0x0100

Penryn SSE4.1 functions.

Definition at line 40 of file cpu.h.

Referenced by av_parse_cpu_caps(), dsputil_init_ssse3(), ff_audio_convert_init_x86(), ff_dsputil_init_mmx(), ff_get_cpu_flags_x86(), ff_h264dsp_init_x86(), ff_proresdsp_x86_init(), ff_rv34dsp_init_x86(), ff_sws_init_swScale_mmx(), ff_vc1dsp_init_mmx(), ff_vp8dsp_init_x86(), and swri_audio_convert_init_x86().

#define AV_CPU_FLAG_SSE42 0x0200

Nehalem SSE4.2 functions.

Definition at line 41 of file cpu.h.

Referenced by av_parse_cpu_caps(), dsputil_init_ssse3(), and ff_get_cpu_flags_x86().

#define AV_CPU_FLAG_SSSE3 0x0080

Conroe SSSE3 functions.

Definition at line 38 of file cpu.h.

Referenced by av_parse_cpu_caps(), ff_ac3dsp_init_x86(), ff_dsputil_init_mmx(), ff_dsputilenc_init_mmx(), ff_get_cpu_flags_x86(), ff_h264dsp_init_x86(), ff_mpadsp_init_mmx(), ff_MPV_common_init_mmx(), ff_pngdsp_init_x86(), ff_rv40dsp_init_x86(), ff_spatial_idwt_init_mmx(), ff_sws_init_swScale_mmx(), ff_vc1dsp_init_mmx(), ff_vp8dsp_init_x86(), init(), PRED4x4(), swri_audio_convert_init_x86(), and v210_x86_init().

#define AV_CPU_FLAG_VFP (1 << 3)

Definition at line 51 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), and ff_get_cpu_flags_arm().

#define AV_CPU_FLAG_VFPV3 (1 << 4)

Definition at line 52 of file cpu.h.

Referenced by av_parse_cpu_caps(), av_parse_cpu_flags(), and ff_get_cpu_flags_arm().

#define AV_CPU_FLAG_XOP 0x0400

Bulldozer XOP functions.

Definition at line 44 of file cpu.h.

Referenced by av_parse_cpu_caps(), and ff_get_cpu_flags_x86().

Function Documentation

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 25 of file cpu.c.

Referenced by opt_cpuflags().

int av_get_cpu_flags ( void )

Return the flags which specify extensions supported by the CPU.

Definition at line 30 of file cpu.c.

Referenced by av_set_cpu_flags_mask(), DECLARE_ASM_CONST(), ff_ac3dsp_init_arm(), ff_ac3dsp_init_x86(), ff_audio_convert_init_x86(), ff_audio_mix_init_x86(), ff_cavsdsp_init_mmx(), ff_dcadsp_init_arm(), ff_diracdsp_init_mmx(), ff_dnxhd_init_mmx(), ff_dsputil_h264_init_ppc(), ff_dsputil_init_arm(), ff_dsputil_init_mmx(), ff_dsputil_init_pix_mmx(), ff_dsputil_init_ppc(), ff_dsputil_init_vfp(), ff_dsputilenc_init_mmx(), ff_dwt_init_x86(), ff_fft_fixed_init_arm(), ff_fft_init_arm(), ff_fft_init_mmx(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_x86(), ff_h263_decode_frame(), ff_h264_pred_init_arm(), ff_h264dsp_init_arm(), ff_h264dsp_init_ppc(), ff_h264dsp_init_x86(), ff_lpc_init_x86(), ff_mpadsp_init_arm(), ff_mpadsp_init_mmx(), ff_MPV_common_init_altivec(), ff_MPV_common_init_arm(), ff_MPV_common_init_mmx(), ff_pngdsp_init_x86(), ff_proresdsp_x86_init(), ff_psdsp_init_arm(), ff_rv34dsp_init_x86(), ff_rv40dsp_init_x86(), ff_sbrdsp_init_arm(), ff_sbrdsp_init_x86(), ff_spatial_idwt_init_mmx(), ff_sws_init_swScale_altivec(), ff_sws_init_swScale_mmx(), ff_swscale_get_unscaled_altivec(), ff_vc1dsp_init_altivec(), ff_vc1dsp_init_mmx(), ff_vp56dsp_init_arm(), ff_vp56dsp_init_x86(), ff_vp8dsp_init_altivec(), ff_vp8dsp_init_arm(), ff_vp8dsp_init_x86(), ff_yuv2rgb_init_altivec(), init(), main(), opt_cpuflags(), PRED4x4(), swri_audio_convert_init_x86(), sws_init_context(), sws_setColorspaceDetails(), swScale(), v210_x86_init(), and xvid_encode_init().

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 113 of file cpu.c.

Referenced by opt_cpuflags().

int av_parse_cpu_flags ( const char * s )

Parse CPU flags from a string.

The returned flags contain the specified flags as well as related unspecified flags.

This function exists only for compatibility with libav. Please use av_parse_cpu_caps() when possible.

Returns:: a combination of AV_CPU_* flags, negative on error.

Definition at line 50 of file cpu.c.

Referenced by main().

attribute_deprecated void av_set_cpu_flags_mask ( int mask )

Set a mask on flags returned by av_get_cpu_flags().

This function is mainly useful for testing. Please use av_force_cpu_flags() and av_get_cpu_flags() instead which are more flexible

Warning:: this function is not thread safe.

Definition at line 43 of file cpu.c.

Referenced by main().

int ff_get_cpu_flags_arm ( void )

Definition at line 22 of file cpu.c.

Referenced by av_get_cpu_flags().

int ff_get_cpu_flags_ppc ( void )

This function MAY rely on signal() or fork() in order to make sure AltiVec is present.

Definition at line 38 of file cpu.c.

Referenced by av_get_cpu_flags().

int ff_get_cpu_flags_x86 ( void )

Definition at line 42 of file cpu.c.

Referenced by av_get_cpu_flags().


Defines
#define	AV_CPU_FLAG_FORCE 0x80000000
#define	AV_CPU_FLAG_MMX 0x0001
	standard MMX
#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.
#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.
#define	AV_CPU_FLAG_SSSE3 0x0080
	Conroe SSSE3 functions.
#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_AVX 0x4000
	AVX functions: requires OS support even if YMM registers aren't used.
#define	AV_CPU_FLAG_CMOV 0x1000000
	supports cmov instruction
#define	AV_CPU_FLAG_XOP 0x0400
	Bulldozer XOP functions.
#define	AV_CPU_FLAG_FMA4 0x0800
	Bulldozer FMA4 functions.
#define	AV_CPU_FLAG_ALTIVEC 0x0001
	standard
#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)
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.
attribute_deprecated void	av_set_cpu_flags_mask (int mask)
	Set a mask on flags returned by av_get_cpu_flags().
int	av_parse_cpu_flags (const char *s)
	Parse CPU flags from a string.
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	ff_get_cpu_flags_arm (void)
int	ff_get_cpu_flags_ppc (void)
	This function MAY rely on signal() or fork() in order to make sure AltiVec is present.
int	ff_get_cpu_flags_x86 (void)