Libav
Macros | Functions | Variables
cpu.c File Reference
#include <stdint.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_XOP   (AV_CPU_FLAG_XOP | CPUFLAG_AVX)
#define CPUFLAG_FMA4   (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)
#define CPUFLAG_AVX2   (AV_CPU_FLAG_AVX2 | CPUFLAG_AVX)

Functions

int av_get_cpu_flags (void)
 Return the flags which specify extensions supported by the CPU.
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_cpu_count (void)

Variables

static int cpuflags_mask = -1
static int checked

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_XOP   (AV_CPU_FLAG_XOP | 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().

Function Documentation

int av_get_cpu_flags ( void  )

Return the flags which specify extensions supported by the CPU.

Definition at line 47 of file cpu.c.

Referenced by decode_user_data(), ff_ac3dsp_init_arm(), ff_ac3dsp_init_x86(), ff_audio_convert_init_arm(), ff_audio_convert_init_x86(), ff_audio_mix_init_x86(), ff_cavsdsp_init_x86(), ff_dcadsp_init_arm(), ff_dcadsp_init_x86(), ff_dct_init_x86(), ff_dither_init_x86(), ff_dnxhdenc_init_x86(), ff_dsputil_init_arm(), ff_dsputil_init_pix_mmx(), ff_dsputil_init_ppc(), ff_dsputil_init_x86(), ff_fft_fixed_init_arm(), ff_fft_init_arm(), ff_fft_init_ppc(), ff_fft_init_x86(), ff_float_dsp_init_arm(), ff_float_dsp_init_ppc(), ff_float_dsp_init_x86(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_ppc(), ff_fmt_convert_init_x86(), ff_get_unscaled_swscale_ppc(), ff_gradfun_init_x86(), ff_h263dsp_init_x86(), 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_hpeldsp_init_aarch64(), ff_hpeldsp_init_arm(), ff_hpeldsp_init_ppc(), ff_hpeldsp_init_x86(), ff_init_lls_x86(), ff_lpc_init_x86(), ff_mlpdsp_init_x86(), ff_mpadsp_init_arm(), ff_mpadsp_init_ppc(), ff_mpadsp_init_x86(), ff_MPV_common_init_arm(), ff_MPV_common_init_ppc(), ff_MPV_common_init_x86(), ff_MPV_encode_init_x86(), ff_pngdsp_init_x86(), ff_proresdsp_x86_init(), ff_psdsp_init_arm(), 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_sws_init_swscale_ppc(), ff_sws_init_swscale_x86(), ff_synth_filter_init_arm(), ff_vc1dsp_init_aarch64(), ff_vc1dsp_init_arm(), ff_vc1dsp_init_ppc(), ff_vc1dsp_init_x86(), ff_videodsp_init_arm(), ff_videodsp_init_x86(), ff_volume_init_x86(), 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_vp8dsp_init_arm(), ff_vp8dsp_init_ppc(), ff_vp8dsp_init_x86(), ff_vp9dsp_init_x86(), ff_yadif_init_x86(), ff_yuv2rgb_init_ppc(), ff_yuv2rgb_init_tables_ppc(), ff_yuv2rgb_init_x86(), hadamard_func(), main(), PRED4x4(), rgb2rgb_init_x86(), sws_init_context(), swscale(), and xvid_encode_init().

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.

Warning
this function is not thread safe.

Definition at line 69 of file cpu.c.

Referenced by main(), and opt_cpuflags().

int av_parse_cpu_flags ( const char *  s)

Parse CPU flags from a string.

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

Definition at line 75 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 144 of file cpu.c.

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

Variable Documentation

int cpuflags_mask = -1
static

Definition at line 45 of file cpu.c.

Referenced by av_get_cpu_flags(), and av_set_cpu_flags_mask().

int checked
static

Definition at line 45 of file cpu.c.

Referenced by av_get_cpu_flags(), av_set_cpu_flags_mask(), and sab_diamond_search().