cpu.c File Reference

#include "cpu.h"
#include "config.h"
#include "opt.h"

Include dependency graph for cpu.c:

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)

Functions
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...

Variables
static int	flags
static int	checked

Macro Definition Documentation

#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_AVX   (AV_CPU_FLAG_AVX | CPUFLAG_SSE42)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_FMA4   (AV_CPU_FLAG_FMA4 | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_MMXEXT   (AV_CPU_FLAG_MMX | AV_CPU_FLAG_MMXEXT | AV_CPU_FLAG_CMOV)

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_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_SSSE3   (AV_CPU_FLAG_SSSE3 | CPUFLAG_SSE3)

Referenced by av_parse_cpu_flags().

#define CPUFLAG_XOP   (AV_CPU_FLAG_XOP | CPUFLAG_AVX)

Referenced by av_parse_cpu_flags().

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 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 a application to detect the enabled cpu flags.

Definition at line 30 of file cpu.c.

Referenced by av_parse_cpu_caps(), av_set_cpu_flags_mask(), D(), 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_dct_encode_init_x86(), ff_diracdsp_init_mmx(), ff_dither_init_x86(), ff_dnxhdenc_init_x86(), ff_dsputil_init_arm(), ff_dsputil_init_mmx(), ff_dsputil_init_pix_mmx(), ff_dsputil_init_ppc(), ff_dwt_init_x86(), ff_fft_fixed_init_arm(), ff_fft_init_arm(), ff_fft_init_x86(), ff_float_dsp_init_arm(), ff_float_dsp_init_ppc(), ff_float_dsp_init_vfp(), ff_float_dsp_init_x86(), ff_fmt_convert_init_arm(), ff_fmt_convert_init_x86(), ff_gradfun_init_x86(), ff_h263_decode_frame(), ff_h264_pred_init_arm(), ff_h264chroma_init_arm(), ff_h264chroma_init_ppc(), ff_h264chroma_init_x86(), ff_h264dsp_init_arm(), ff_h264dsp_init_ppc(), ff_h264dsp_init_x86(), ff_h264qpel_init_arm(), ff_h264qpel_init_ppc(), ff_h264qpel_init_x86(), ff_hpeldsp_init_arm(), ff_hpeldsp_init_ppc(), ff_hpeldsp_init_x86(), ff_lpc_init_x86(), ff_mpadsp_init_arm(), ff_mpadsp_init_x86(), ff_MPV_common_init_altivec(), ff_MPV_common_init_arm(), ff_MPV_common_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_arm(), 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_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_vp56dsp_init_arm(), ff_vp56dsp_init_x86(), ff_vp8dsp_init_altivec(), ff_vp8dsp_init_arm(), ff_vp8dsp_init_x86(), ff_yadif_init_x86(), ff_yuv2rgb_init_altivec(), ff_yuv2rgb_init_mmx(), hadamard_func(), init(), main(), multiple_resample(), opt_cpuflags(), pp_get_context(), PRED4x4(), rgb2rgb_init_x86(), swri_audio_convert_init_arm(), 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 114 of file cpu.c.

Referenced by main(), and 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.

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.

Variable Documentation

int checked

static

Definition at line 23 of file cpu.c.

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

int flags

static

Definition at line 23 of file cpu.c.

Referenced by ape_tag_read_field(), apply_param_change(), asf_write_packet(), asf_write_trailer(), audio_read_close(), av_bprint_is_complete(), av_buffersink_set_frame_size(), av_buffersrc_add_frame(), av_buffersrc_add_frame_internal(), av_force_cpu_flags(), av_get_cpu_flags(), av_opt_freep_ranges(), av_opt_query_ranges(), av_opt_set_defaults2(), av_parse_cpu_flags(), av_read_image_line(), av_set_cpu_flags_mask(), av_timecode_init(), av_write_image_line(), avcodec_get_context_defaults3(), avfilter_graph_queue_command(), avfilter_graph_set_auto_convert(), avi_read_idx1(), avio_check(), bidir_refine(), build_feed_streams(), decode_frame(), decode_frame_header(), decode_hextile(), decode_init(), decode_mb_b(), decode_rle(), decode_subblock(), decode_subblock3(), device_open(), dnxhd_decode_dct_block(), dxa_read_header(), encode_frame(), epzs_motion_search2(), epzs_motion_search4(), fbdev_read_header(), ff_ac3_apply_rematrixing(), ff_add_index_entry(), ff_alsa_open(), ff_get_unscaled_swscale(), ff_mms_asf_header_parser(), ff_mov_read_stsd_entries(), ff_mp4_parse_es_descr(), ff_pngdsp_init_x86(), ff_proresdsp_x86_init(), ff_rdt_parse_packet(), ff_rtsp_open_transport_ctx(), ff_samples_to_time_base(), ff_sws_getContextFromCmdLine(), file_check(), fileTest(), filter_frame(), flush_packet(), flv_read_header(), flv_read_packet(), flv_write_packet(), get_audio_flags(), get_mb_score(), get_needed_flags(), gif_read_image(), hls_read_seek(), hpel_motion_search(), http_get_file_handle(), init_noise(), init_stream(), ipvideo_decode_block_opcode_0x7(), ipvideo_decode_block_opcode_0x7_16(), ipvideo_decode_block_opcode_0x8(), ipvideo_decode_block_opcode_0x8_16(), ipvideo_decode_block_opcode_0x9(), ipvideo_decode_block_opcode_0x9_16(), ipvideo_decode_block_opcode_0xA(), ipvideo_decode_block_opcode_0xA_16(), lvf_read_packet(), main(), matroska_parse_block(), mmf_read_packet(), mov_read_tfhd(), mov_read_timecode_track(), mov_read_trun(), mov_write_tfhd_tag(), mov_write_trailer(), mov_write_trun_tag(), movie_request_frame(), mpeg_decode_user_data(), mpegps_read_pes_header(), mpegts_push_data(), mpegts_write_pes(), mpegts_write_section1(), msvideo1_decode_16bit(), msvideo1_decode_8bit(), mxf_parse_structural_metadata(), noise(), nut_write_packet(), ogg_read_page(), old_codec37(), parse_MP4SLDescrTag(), parse_pcr(), pmp_header(), pp_config_props(), put_image(), qpel_motion_search(), query_codec(), query_formats(), read_desc_chunk(), read_header(), read_packet(), read_part_of_packet(), rm_read_dts(), rm_read_header(), rm_read_packet(), rtp_parse_one_packet(), rtp_parse_packet_internal(), rv10_write_header(), sad_hpel_motion_search(), sdl_write_header(), selfTest(), seqvideo_decode(), show_help_default(), swf_write_trailer(), sws_getCachedContext(), sws_getContext(), sws_init_context(), swScale(), thread_get_buffer_internal(), txd_decode_frame(), udp_resolve_host(), url_alloc_for_protocol(), utvideo_encode_init(), video_open(), vmdaudio_decode_frame(), wmavoice_decode_init(), and write_packet().