cpu.c File Reference

#include <stdint.h>
#include <stdatomic.h>
#include "cpu.h"
#include "cpu_internal.h"
#include "config.h"
#include "opt.h"
#include "common.h"

Go to the source code of this file.

Macros
#define	CPUFLAG_MMXEXT   (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)
#define	CPUFLAG_3DNOW   (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX)
#define	CPUFLAG_3DNOWEXT   (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW)
#define	CPUFLAG_SSE   (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT)
#define	CPUFLAG_SSE2   (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE)
#define	CPUFLAG_SSE2SLOW   (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2)
#define	CPUFLAG_SSE3   (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2)
#define	CPUFLAG_SSE3SLOW   (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3)
#define	CPUFLAG_SSSE3   (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3)
#define	CPUFLAG_SSE4   (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3)
#define	CPUFLAG_SSE42   (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4)
#define	CPUFLAG_AVX   (AV_CPU_FLAG_AVX | CPUFLAG_SSE42)
#define	CPUFLAG_AVXSLOW   (AV_CPU_FLAG_AVXSLOW | CPUFLAG_AVX)
#define	CPUFLAG_XOP   (AV_CPU_FLAG_XOP | CPUFLAG_AVX)
#define	CPUFLAG_FMA3   (AV_CPU_FLAG_FMA3 | CPUFLAG_AVX)
#define	CPUFLAG_FMA4   (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)
#define	CPUFLAG_AVX2   (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)
#define	CPUFLAG_BMI2   (AV_CPU_FLAG_BMI2 | AV_CPU_FLAG_BMI1)
#define	CPUFLAG_AESNI   (AV_CPU_FLAG_AESNI | CPUFLAG_SSE42)

Functions
static int	get_cpu_flags (void)
void	av_force_cpu_flags (int arg)
	Disables cpu detection and forces the specified flags. More...
int	av_get_cpu_flags (void)
	Return the flags which specify extensions supported by the CPU. More...
void	av_set_cpu_flags_mask (int mask)
	Set a mask on flags returned by av_get_cpu_flags(). More...
int	av_parse_cpu_flags (const char *s)
	Parse CPU flags from a string. More...
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. More...
int	av_cpu_count (void)

Variables
static atomic_int	cpu_flags = ATOMIC_VAR_INIT(-1)

Macro Definition Documentation

#define CPUFLAG_MMXEXT   (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_3DNOW   (AV_CPU_FLAG_3DNOW | AV_CPU_FLAG_MMX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_3DNOWEXT   (AV_CPU_FLAG_3DNOWEXT | CPUFLAG_3DNOW)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE   (AV_CPU_FLAG_SSE | CPUFLAG_MMXEXT)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE2   (AV_CPU_FLAG_SSE2 | CPUFLAG_SSE)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE2SLOW   (AV_CPU_FLAG_SSE2SLOW | CPUFLAG_SSE2)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE3   (AV_CPU_FLAG_SSE3 | CPUFLAG_SSE2)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE3SLOW   (AV_CPU_FLAG_SSE3SLOW | CPUFLAG_SSE3)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSSE3   (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE4   (AV_CPU_FLAG_SSE4 | CPUFLAG_SSSE3)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_SSE42   (AV_CPU_FLAG_SSE42 | CPUFLAG_SSE4)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_AVX   (AV_CPU_FLAG_AVX | CPUFLAG_SSE42)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_AVXSLOW   (AV_CPU_FLAG_AVXSLOW | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_XOP   (AV_CPU_FLAG_XOP | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_FMA3   (AV_CPU_FLAG_FMA3 | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_FMA4   (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_AVX2   (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_BMI2   (AV_CPU_FLAG_BMI2 | AV_CPU_FLAG_BMI1)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_AESNI   (AV_CPU_FLAG_AESNI | CPUFLAG_SSE42)

Referenced by av_parse_cpu_flags().

Function Documentation

static int get_cpu_flags ( void  )

static

Definition at line 50 of file cpu.c.

Referenced by av_get_cpu_flags(), and av_set_cpu_flags_mask().

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 63 of file cpu.c.

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

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 89 of file cpu.c.

Referenced by check_cpu_flag(), D(), define_8tap_2d_funcs(), ff_aac_dsp_init_x86(), ff_ac3dsp_init_arm(), ff_ac3dsp_init_x86(), ff_ac3dsp_set_downmix_x86(), ff_alacdsp_init_x86(), ff_audio_convert_init_aarch64(), ff_audio_convert_init_arm(), ff_audio_convert_init_x86(), ff_audio_mix_init_x86(), ff_audio_resample_init_aarch64(), ff_audio_resample_init_arm(), ff_audiodsp_init_arm(), ff_audiodsp_init_ppc(), ff_audiodsp_init_x86(), ff_blend_init_x86(), ff_blockdsp_init_arm(), ff_blockdsp_init_ppc(), ff_blockdsp_init_x86(), ff_bswapdsp_init_x86(), ff_bwdif_init_x86(), ff_cavsdsp_init_x86(), ff_colorspacedsp_x86_init(), ff_dcadsp_init_x86(), ff_dct_encode_init_x86(), ff_dct_init_x86(), ff_diracdsp_init_x86(), ff_dither_init_x86(), ff_dnxhdenc_init_x86(), ff_dwt_init_x86(), ff_eq_init_x86(), ff_fdctdsp_init_ppc(), ff_fdctdsp_init_x86(), ff_fft_fixed_init_arm(), ff_fft_init_aarch64(), ff_fft_init_arm(), ff_fft_init_ppc(), ff_fft_init_x86(), ff_fixed_dsp_init_x86(), ff_flacdsp_init_x86(), ff_float_dsp_init_aarch64(), ff_float_dsp_init_arm(), ff_float_dsp_init_ppc(), ff_float_dsp_init_x86(), ff_fmt_convert_init_aarch64(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_ppc(), ff_fmt_convert_init_x86(), ff_fspp_init_x86(), ff_g722dsp_init_arm(), ff_g722dsp_init_x86(), ff_get_unscaled_swscale_aarch64(), ff_get_unscaled_swscale_arm(), ff_get_unscaled_swscale_ppc(), ff_gradfun_init_x86(), ff_h263dsp_init_x86(), ff_h264_pred_init_aarch64(), ff_h264_pred_init_arm(), ff_h264chroma_init_aarch64(), ff_h264chroma_init_arm(), ff_h264chroma_init_ppc(), ff_h264chroma_init_x86(), ff_h264dsp_init_aarch64(), ff_h264dsp_init_arm(), ff_h264dsp_init_ppc(), ff_h264dsp_init_x86(), ff_h264qpel_init_aarch64(), ff_h264qpel_init_arm(), ff_h264qpel_init_ppc(), ff_h264qpel_init_x86(), ff_hevc_dsp_init_x86(), ff_hevcdsp_init_arm(), ff_hpeldsp_init_aarch64(), ff_hpeldsp_init_arm(), ff_hpeldsp_init_ppc(), ff_hpeldsp_init_x86(), ff_huffyuvdsp_init_x86(), ff_huffyuvencdsp_init_x86(), ff_idctdsp_init_arm(), ff_idctdsp_init_ppc(), ff_idctdsp_init_x86(), ff_idet_init_x86(), ff_image_copy_plane_uc_from_x86(), ff_init_lls_x86(), ff_interlace_init_x86(), ff_jpeg2000dsp_init_x86(), ff_llauddsp_init_arm(), ff_llauddsp_init_ppc(), ff_llauddsp_init_x86(), ff_llviddsp_init_ppc(), ff_llviddsp_init_x86(), ff_llvidencdsp_init_x86(), ff_lpc_init_x86(), ff_maskedmerge_init_x86(), ff_me_cmp_init_arm(), ff_me_cmp_init_ppc(), 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_mpegvideodsp_init_ppc(), ff_mpegvideodsp_init_x86(), ff_mpegvideoencdsp_init_arm(), ff_mpegvideoencdsp_init_ppc(), ff_mpegvideoencdsp_init_x86(), ff_mpv_common_init_arm(), ff_mpv_common_init_neon(), ff_mpv_common_init_ppc(), ff_mpv_common_init_x86(), ff_noise_init_x86(), ff_pixblockdsp_init_arm(), ff_pixblockdsp_init_ppc(), ff_pixblockdsp_init_x86(), ff_pixelutils_sad_init_x86(), ff_pngdsp_init_x86(), ff_pp7_init_x86(), ff_proresdsp_init_x86(), ff_psdsp_init_arm(), ff_psdsp_init_x86(), ff_psnr_init_x86(), ff_pullup_init_x86(), ff_qpeldsp_init_x86(), ff_rdft_init_arm(), ff_removegrain_init_x86(), ff_rv34dsp_init_arm(), ff_rv34dsp_init_x86(), ff_rv40dsp_init_aarch64(), ff_rv40dsp_init_arm(), ff_rv40dsp_init_x86(), ff_sbrdsp_init_arm(), ff_sbrdsp_init_x86(), ff_showcqt_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_x86(), ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), ff_synth_filter_init_aarch64(), ff_synth_filter_init_arm(), ff_synth_filter_init_x86(), ff_takdsp_init_x86(), ff_tinterlace_init_x86(), ff_ttadsp_init_x86(), ff_ttaencdsp_init_x86(), ff_v210_x86_init(), ff_v210enc_init_x86(), ff_vc1dsp_init_aarch64(), ff_vc1dsp_init_arm(), ff_vc1dsp_init_ppc(), ff_vc1dsp_init_x86(), ff_videodsp_init_aarch64(), ff_videodsp_init_arm(), ff_videodsp_init_x86(), ff_volume_init_x86(), ff_vorbisdsp_init_aarch64(), ff_vorbisdsp_init_arm(), ff_vorbisdsp_init_ppc(), ff_vorbisdsp_init_x86(), ff_vp3dsp_init_arm(), ff_vp3dsp_init_ppc(), ff_vp3dsp_init_x86(), ff_vp6dsp_init_arm(), ff_vp6dsp_init_x86(), ff_vp78dsp_init_arm(), ff_vp78dsp_init_ppc(), ff_vp78dsp_init_x86(), ff_vp8dsp_init_arm(), ff_vp8dsp_init_x86(), ff_vp9dsp_init_16bpp_x86(), ff_vp9dsp_init_x86(), ff_w3fdif_init_x86(), ff_xvid_idct_init_x86(), ff_yadif_init_x86(), ff_yuv2rgb_init_ppc(), ff_yuv2rgb_init_tables_ppc(), ff_yuv2rgb_init_x86(), INIT_FUNC(), lf_mix_fns(), main(), multiple_resample(), opt_cpuflags(), pp_get_context(), PRED4x4(), 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(), sws_init_context(), swscale(), thread_main(), vp9dsp_itxfm_init_aarch64(), vp9dsp_itxfm_init_arm(), vp9dsp_loopfilter_init_aarch64(), and vp9dsp_loopfilter_init_arm().

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

Definition at line 99 of file cpu.c.

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 105 of file cpu.c.

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 185 of file cpu.c.

Referenced by main(), and opt_cpuflags().

int av_cpu_count

(

void

)

Returns

the number of logical CPU cores present.

Definition at line 260 of file cpu.c.

Referenced by ff_frame_thread_encoder_init(), ff_frame_thread_init(), ff_slice_thread_init(), main(), and thread_init_internal().

Variable Documentation

atomic_int cpu_flags = ATOMIC_VAR_INIT(-1)

static

Definition at line 48 of file cpu.c.

Referenced by av_force_cpu_flags(), av_get_cpu_flags(), av_set_cpu_flags_mask(), define_8tap_2d_funcs(), ff_aac_dsp_init_x86(), ff_ac3dsp_init_arm(), ff_ac3dsp_init_x86(), ff_ac3dsp_set_downmix_x86(), ff_alacdsp_init_x86(), ff_audio_convert_init_aarch64(), ff_audio_convert_init_arm(), ff_audio_convert_init_x86(), ff_audio_mix_init_x86(), ff_audio_resample_init_aarch64(), ff_audio_resample_init_arm(), ff_audiodsp_init_arm(), ff_audiodsp_init_x86(), ff_blend_init_x86(), ff_blockdsp_init_arm(), ff_blockdsp_init_x86(), ff_bswapdsp_init_x86(), ff_bwdif_init_x86(), ff_cavsdsp_init_x86(), ff_colorspacedsp_x86_init(), ff_dcadsp_init_x86(), ff_dct_encode_init_x86(), ff_dct_init_x86(), ff_dither_init_x86(), ff_eq_init_x86(), ff_fdctdsp_init_x86(), ff_fft_fixed_init_arm(), ff_fft_init_aarch64(), ff_fft_init_arm(), ff_fft_init_x86(), ff_fixed_dsp_init_x86(), ff_flacdsp_init_x86(), ff_float_dsp_init_aarch64(), ff_float_dsp_init_arm(), ff_float_dsp_init_x86(), ff_fmt_convert_init_aarch64(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_x86(), ff_fspp_init_x86(), ff_g722dsp_init_arm(), ff_g722dsp_init_x86(), ff_get_unscaled_swscale_aarch64(), ff_get_unscaled_swscale_arm(), ff_gradfun_init_x86(), ff_h263dsp_init_x86(), ff_h264_pred_init_aarch64(), ff_h264_pred_init_arm(), ff_h264chroma_init_aarch64(), ff_h264chroma_init_arm(), ff_h264chroma_init_x86(), ff_h264dsp_init_aarch64(), ff_h264dsp_init_arm(), ff_h264dsp_init_x86(), ff_h264qpel_init_aarch64(), ff_h264qpel_init_arm(), ff_h264qpel_init_x86(), ff_hevc_dsp_init_x86(), ff_hevcdsp_init_arm(), ff_hpeldsp_init_aarch64(), ff_hpeldsp_init_arm(), ff_hpeldsp_init_x86(), ff_huffyuvdsp_init_x86(), ff_huffyuvencdsp_init_x86(), ff_idctdsp_init_arm(), ff_idctdsp_init_x86(), ff_idet_init_x86(), ff_image_copy_plane_uc_from_x86(), ff_init_lls_x86(), ff_interlace_init_x86(), ff_jpeg2000dsp_init_x86(), ff_llauddsp_init_arm(), ff_llauddsp_init_x86(), ff_llviddsp_init_x86(), ff_llvidencdsp_init_x86(), ff_lpc_init_x86(), ff_maskedmerge_init_x86(), ff_me_cmp_init_arm(), ff_mlpdsp_init_arm(), ff_mlpdsp_init_x86(), ff_mpadsp_init_aarch64(), ff_mpadsp_init_arm(), ff_mpadsp_init_x86(), ff_mpegvideodsp_init_x86(), ff_mpegvideoencdsp_init_arm(), ff_mpegvideoencdsp_init_x86(), ff_mpv_common_init_arm(), ff_mpv_common_init_neon(), ff_mpv_common_init_x86(), ff_noise_init_x86(), ff_pixblockdsp_init_arm(), ff_pixblockdsp_init_x86(), ff_pixelutils_sad_init_x86(), ff_pngdsp_init_x86(), ff_pp7_init_x86(), ff_proresdsp_init_x86(), ff_psdsp_init_arm(), ff_psdsp_init_x86(), ff_psnr_init_x86(), ff_pullup_init_x86(), ff_qpeldsp_init_x86(), ff_rdft_init_arm(), ff_removegrain_init_x86(), ff_rv34dsp_init_arm(), ff_rv34dsp_init_x86(), ff_rv40dsp_init_aarch64(), ff_rv40dsp_init_arm(), ff_rv40dsp_init_x86(), ff_sbrdsp_init_arm(), ff_sbrdsp_init_x86(), ff_spp_init_x86(), ff_ssim_init_x86(), ff_stereo3d_init_x86(), ff_svq1enc_init_x86(), ff_sws_init_swscale_aarch64(), ff_sws_init_swscale_arm(), ff_sws_init_swscale_x86(), ff_synth_filter_init_aarch64(), ff_synth_filter_init_arm(), ff_synth_filter_init_x86(), ff_takdsp_init_x86(), ff_tinterlace_init_x86(), ff_ttadsp_init_x86(), ff_ttaencdsp_init_x86(), ff_v210_x86_init(), ff_v210enc_init_x86(), ff_vc1dsp_init_aarch64(), ff_vc1dsp_init_arm(), ff_vc1dsp_init_x86(), ff_videodsp_init_aarch64(), ff_videodsp_init_arm(), ff_videodsp_init_x86(), ff_volume_init_x86(), ff_vorbisdsp_init_aarch64(), ff_vorbisdsp_init_arm(), ff_vorbisdsp_init_x86(), ff_vp3dsp_init_arm(), ff_vp3dsp_init_x86(), ff_vp6dsp_init_arm(), ff_vp6dsp_init_x86(), ff_vp78dsp_init_arm(), ff_vp78dsp_init_x86(), ff_vp8dsp_init_arm(), ff_vp8dsp_init_x86(), ff_vp9dsp_init_16bpp_x86(), ff_vp9dsp_init_x86(), ff_w3fdif_init_x86(), ff_xvid_idct_init_x86(), ff_yadif_init_x86(), ff_yuv2rgb_init_x86(), INIT_FUNC(), lf_mix_fns(), main(), PRED4x4(), rgb2rgb_init_x86(), swri_audio_convert_init_aarch64(), swri_audio_convert_init_arm(), swri_resample_dsp_aarch64_init(), swri_resample_dsp_arm_init(), sws_init_context(), swscale(), vp9dsp_itxfm_init_aarch64(), vp9dsp_itxfm_init_arm(), vp9dsp_loopfilter_init_aarch64(), and vp9dsp_loopfilter_init_arm().