audioconvert.c File Reference

audio conversion More...

#include "libavutil/avstring.h"
#include "libavutil/avassert.h"
#include "libavutil/libm.h"
#include "libavutil/samplefmt.h"
#include "audioconvert.h"

Go to the source code of this file.

Macros
#define	CONV_FUNC_NAME(dst_fmt, src_fmt)   conv_ ## src_fmt ## _to_ ## dst_fmt
#define	CONV_FUNC(ofmt, otype, ifmt, expr)
#define	FMT_PAIR_FUNC(out, in)   [(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in)

Functions
	CONV_FUNC (AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_U8,(*(const uint8_t *) pi-0x80U)<< 8) CONV_FUNC(AV_SAMPLE_FMT_S32
	for ()
	for (ch=0;ch< ctx->channels;ch++)

Variables
	int32_t
	AV_SAMPLE_FMT_U8
uint8_t pi<< 24) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0f/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_U8,(*(constuint8_t *) pi-0x80)*(1.0/(1<< 7))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S16,(*(constint16_t *) pi >>8)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0f/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S16,*(constint16_t *) pi *(1.0/(1<< 15))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_S32,(*(constint32_t *) pi >>24)+0x80) CONV_FUNC(AV_SAMPLE_FMT_FLT, float, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0f/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_DBL, double, AV_SAMPLE_FMT_S32,*(constint32_t *) pi *(1.0/(1U<< 31))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_FLT, av_clip_uint8(lrintf(*(constfloat *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_FLT, av_clip_int16(lrintf(*(constfloat *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_FLT, av_clipl_int32(llrintf(*(constfloat *) pi *(1U<< 31)))) CONV_FUNC(AV_SAMPLE_FMT_U8, uint8_t, AV_SAMPLE_FMT_DBL, av_clip_uint8(lrint(*(constdouble *) pi *(1<< 7))+0x80)) CONV_FUNC(AV_SAMPLE_FMT_S16, int16_t, AV_SAMPLE_FMT_DBL, av_clip_int16(lrint(*(constdouble *) pi *(1<< 15)))) CONV_FUNC(AV_SAMPLE_FMT_S32, int32_t, AV_SAMPLE_FMT_DBL, av_clipl_int32(llrint(*(constdouble *) pi *(1U<< 31))))#defineFMT_PAIR_FUNC(out, in) staticconv_func_type *constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB *AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_U8), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S16), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_S32), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_FLT), FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT, AV_SAMPLE_FMT_DBL), FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL, AV_SAMPLE_FMT_DBL),};staticvoidcpy1(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, len);}staticvoidcpy2(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 2 *len);}staticvoidcpy4(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 4 *len);}staticvoidcpy8(uint8_t **dst, constuint8_t **src, intlen){memcpy(*dst,*src, 8 *len);}AudioConvert *swri_audio_convert_alloc(enumAVSampleFormatout_fmt, enumAVSampleFormatin_fmt, intchannels, constint *ch_map, intflags){AudioConvert *ctx;conv_func_type *f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB *av_get_packed_sample_fmt(in_fmt)];if(!f) returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx) returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P) memset(ctx->silence, 0x80, sizeof(ctx->silence));if(out_fmt==in_fmt &&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_YASM &&1) swri_audio_convert_init_x86(ctx, out_fmt, in_fmt, channels);if(ARCH_ARM) swri_audio_convert_init_arm(ctx, out_fmt, in_fmt, channels);if(ARCH_AARCH64) swri_audio_convert_init_aarch64(ctx, out_fmt, in_fmt, channels);returnctx;}voidswri_audio_convert_free(AudioConvert **ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert *ctx, AudioData *out, AudioData *in, intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch< planes;ch++) m|=(intptr_t) in->ch[ch];misaligned|=m &ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out->	ch_count
unsigned	m = 0
	return

Detailed Description

audio conversion

Author

Michael Niedermayer micha.nosp@m.elni.nosp@m.@gmx..nosp@m.at

Definition in file audioconvert.c.

Macro Definition Documentation

#define CONV_FUNC_NAME	(		dst_fmt,
			src_fmt
	)		conv_ ## src_fmt ## _to_ ## dst_fmt

Definition at line 35 of file audioconvert.c.

#define CONV_FUNC	(		ofmt,
			otype,
			ifmt,
			expr
	)

Value:

static void CONV_FUNC_NAME(ofmt, ifmt)(uint8_t *po, const uint8_t *pi, int is, int os, uint8_t *end)\
{\
    uint8_t *end2 = end - 3*os;\
    while(po < end2){\
        *(otype*)po = expr; pi += is; po += os;\
        *(otype*)po = expr; pi += is; po += os;\
        *(otype*)po = expr; pi += is; po += os;\
        *(otype*)po = expr; pi += is; po += os;\
    }\
    while(po < end){\
        *(otype*)po = expr; pi += is; po += os;\
    }\
}

Definition at line 38 of file audioconvert.c.

#define FMT_PAIR_FUNC	(		out,
			in
	)		[(out) + AV_SAMPLE_FMT_NB*(in)] = CONV_FUNC_NAME(out, in)

Function Documentation

CONV_FUNC	(	AV_SAMPLE_FMT_S16	,
		int16_t	,
		AV_SAMPLE_FMT_U8	,
		(*(const uint8_t *) pi-0x80U)<<	8
	)

for

(

)

Definition at line 188 of file audioconvert.c.

for

(

ch

= 0; ch<ctx->channels; ch++

)

Definition at line 214 of file audioconvert.c.

Variable Documentation

int32_t

Definition at line 56 of file audioconvert.c.

Referenced by av_audio_convert().

AV_SAMPLE_FMT_U8

Definition at line 56 of file audioconvert.c.

Referenced by av_audio_convert().

uint8_t pi<<24)CONV_FUNC(AV_SAMPLE_FMT_FLT,float,AV_SAMPLE_FMT_U8,(*(constuint8_t*)pi-0x80)*(1.0f/(1<<7)))CONV_FUNC(AV_SAMPLE_FMT_DBL,double,AV_SAMPLE_FMT_U8,(*(constuint8_t*)pi-0x80)*(1.0/(1<<7)))CONV_FUNC(AV_SAMPLE_FMT_U8,uint8_t,AV_SAMPLE_FMT_S16,(*(constint16_t*)pi>>8)+0x80)CONV_FUNC(AV_SAMPLE_FMT_FLT,float,AV_SAMPLE_FMT_S16,*(constint16_t*)pi*(1.0f/(1<<15)))CONV_FUNC(AV_SAMPLE_FMT_DBL,double,AV_SAMPLE_FMT_S16,*(constint16_t*)pi*(1.0/(1<<15)))CONV_FUNC(AV_SAMPLE_FMT_U8,uint8_t,AV_SAMPLE_FMT_S32,(*(constint32_t*)pi>>24)+0x80)CONV_FUNC(AV_SAMPLE_FMT_FLT,float,AV_SAMPLE_FMT_S32,*(constint32_t*)pi*(1.0f/(1U<<31)))CONV_FUNC(AV_SAMPLE_FMT_DBL,double,AV_SAMPLE_FMT_S32,*(constint32_t*)pi*(1.0/(1U<<31)))CONV_FUNC(AV_SAMPLE_FMT_U8,uint8_t,AV_SAMPLE_FMT_FLT,av_clip_uint8(lrintf(*(constfloat*)pi*(1<<7))+0x80))CONV_FUNC(AV_SAMPLE_FMT_S16,int16_t,AV_SAMPLE_FMT_FLT,av_clip_int16(lrintf(*(constfloat*)pi*(1<<15))))CONV_FUNC(AV_SAMPLE_FMT_S32,int32_t,AV_SAMPLE_FMT_FLT,av_clipl_int32(llrintf(*(constfloat*)pi*(1U<<31))))CONV_FUNC(AV_SAMPLE_FMT_U8,uint8_t,AV_SAMPLE_FMT_DBL,av_clip_uint8(lrint(*(constdouble*)pi*(1<<7))+0x80))CONV_FUNC(AV_SAMPLE_FMT_S16,int16_t,AV_SAMPLE_FMT_DBL,av_clip_int16(lrint(*(constdouble*)pi*(1<<15))))CONV_FUNC(AV_SAMPLE_FMT_S32,int32_t,AV_SAMPLE_FMT_DBL,av_clipl_int32(llrint(*(constdouble*)pi*(1U<<31))))#defineFMT_PAIR_FUNC(out,in)staticconv_func_type*constfmt_pair_to_conv_functions[AV_SAMPLE_FMT_NB*AV_SAMPLE_FMT_NB]={FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8,AV_SAMPLE_FMT_U8),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_U8),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32,AV_SAMPLE_FMT_U8),FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_U8),FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL,AV_SAMPLE_FMT_U8),FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8,AV_SAMPLE_FMT_S16),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_S16),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32,AV_SAMPLE_FMT_S16),FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_S16),FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL,AV_SAMPLE_FMT_S16),FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8,AV_SAMPLE_FMT_S32),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_S32),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32,AV_SAMPLE_FMT_S32),FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_S32),FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL,AV_SAMPLE_FMT_S32),FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8,AV_SAMPLE_FMT_FLT),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_FLT),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32,AV_SAMPLE_FMT_FLT),FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_FLT),FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL,AV_SAMPLE_FMT_FLT),FMT_PAIR_FUNC(AV_SAMPLE_FMT_U8,AV_SAMPLE_FMT_DBL),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S16,AV_SAMPLE_FMT_DBL),FMT_PAIR_FUNC(AV_SAMPLE_FMT_S32,AV_SAMPLE_FMT_DBL),FMT_PAIR_FUNC(AV_SAMPLE_FMT_FLT,AV_SAMPLE_FMT_DBL),FMT_PAIR_FUNC(AV_SAMPLE_FMT_DBL,AV_SAMPLE_FMT_DBL),};staticvoidcpy1(uint8_t**dst,constuint8_t**src,intlen){memcpy(*dst,*src,len);}staticvoidcpy2(uint8_t**dst,constuint8_t**src,intlen){memcpy(*dst,*src,2*len);}staticvoidcpy4(uint8_t**dst,constuint8_t**src,intlen){memcpy(*dst,*src,4*len);}staticvoidcpy8(uint8_t**dst,constuint8_t**src,intlen){memcpy(*dst,*src,8*len);}AudioConvert*swri_audio_convert_alloc(enumAVSampleFormatout_fmt,enumAVSampleFormatin_fmt,intchannels,constint*ch_map,intflags){AudioConvert*ctx;conv_func_type*f=fmt_pair_to_conv_functions[av_get_packed_sample_fmt(out_fmt)+AV_SAMPLE_FMT_NB*av_get_packed_sample_fmt(in_fmt)];if(!f)returnNULL;ctx=av_mallocz(sizeof(*ctx));if(!ctx)returnNULL;if(channels==1){in_fmt=av_get_planar_sample_fmt(in_fmt);out_fmt=av_get_planar_sample_fmt(out_fmt);}ctx->channels=channels;ctx->conv_f=f;ctx->ch_map=ch_map;if(in_fmt==AV_SAMPLE_FMT_U8||in_fmt==AV_SAMPLE_FMT_U8P)memset(ctx->silence,0x80,sizeof(ctx->silence));if(out_fmt==in_fmt&&!ch_map){switch(av_get_bytes_per_sample(in_fmt)){case1:ctx->simd_f=cpy1;break;case2:ctx->simd_f=cpy2;break;case4:ctx->simd_f=cpy4;break;case8:ctx->simd_f=cpy8;break;}}if(HAVE_YASM&&1)swri_audio_convert_init_x86(ctx,out_fmt,in_fmt,channels);if(ARCH_ARM)swri_audio_convert_init_arm(ctx,out_fmt,in_fmt,channels);if(ARCH_AARCH64)swri_audio_convert_init_aarch64(ctx,out_fmt,in_fmt,channels);returnctx;}voidswri_audio_convert_free(AudioConvert**ctx){av_freep(ctx);}intswri_audio_convert(AudioConvert*ctx,AudioData*out,AudioData*in,intlen){intch;intoff=0;constintos=(out->planar?1:out->ch_count)*out->bps;unsignedmisaligned=0;av_assert0(ctx->channels==out->ch_count);if(ctx->in_simd_align_mask){intplanes=in->planar?in->ch_count:1;unsignedm=0;for(ch=0;ch<planes;ch++)m|=(intptr_t)in->ch[ch];misaligned|=m&ctx->in_simd_align_mask;}if(ctx->out_simd_align_mask){intplanes=out->planar?out-> ch_count

Definition at line 56 of file audioconvert.c.

Referenced by get(), set(), and shift().

unsigned m = 0

Definition at line 187 of file audioconvert.c.

Referenced by ac3_bit_alloc_calc_bap_c(), adapt_probs(), adpcm_decode_frame(), alloc_array_elem(), apply_predictor_transform(), apply_tns(), asym_quant(), av_add_stable(), av_dict_free(), av_dict_set(), av_fopen_utf8(), av_timecode_adjust_ntsc_framenum2(), av_timegm(), avpriv_trc_smpte_st2084(), cabac_init_state(), calc_masking(), calc_one_scale(), channelmap_config_input(), compensate_volume(), compute_images_mse(), convert_timestamp(), decode_frame_header(), decode_tonal_components(), decode_transform_coeffs(), decorr_mono(), decorr_stereo(), decorr_stereo_pass2(), decorr_stereo_pass_id2(), decorr_stereo_quick(), decorrelation(), dequant_lsps(), dsd_ctables_tableinit(), dshow_cycle_devices(), dv_calc_mb_coordinates(), dv_calculate_mb_xy(), encode_block(), encode_frame(), encode_init(), execute_code(), ff_aac_apply_tns(), ff_ac3_quantize_mantissas(), ff_blend_mask(), ff_celt_decode_frame(), ff_gradfun_filter_line_c(), ff_hevc_hls_residual_coding(), ff_index_search_timestamp(), ff_init_ff_cos_tabs(), ff_lpc_calc_coefs(), ff_mjpeg_encode_init(), ff_subblock_synthesis(), ff_xface_generate_face(), filter_frame(), find_best_state(), find_peaks(), get_speaker_pos(), global_mv(), iir_filter(), init(), init_cqt(), init_mdct_win(), init_multbl2(), insert_ts(), interleave(), inverse_prediction(), jpeg_parse(), l3_unscale(), load_data(), main(), make_lpc_coefs(), mlp_decode_init(), modnpf(), mov_text_decode_close(), mov_text_decode_frame(), mov_text_init(), mp_decode_layer2(), mpeg_decode_mb(), mpegaudio_tableinit(), mpegps_read_header(), mpegps_read_packet(), mpegps_read_pes_header(), mv_pred_direct(), ogm_chapter(), open_output_file(), opt_map(), opt_map_channel(), parse_aux_data(), parse_dmix_coeffs(), pcx_decode_frame(), pix_abs16x16_x2_mvi(), pow_m1_4(), pred_spatial_direct_motion(), ps_decorrelate_c(), ps_tableinit(), ra144_encode_subblock(), read16_fft_bin(), read8_fft_bin(), read_access_unit(), read_header(), read_mv_component(), sbr_env_estimate(), sbr_gain_calc(), sbr_hf_apply_noise(), sbr_hf_assemble(), sbr_hf_g_filt_c(), sbr_hf_gen(), sbr_mapping(), scale_double(), setup_pps(), split_radix_permutation(), stabilize_lsps(), svq1_decode_block_intra(), svq1_decode_block_non_intra(), svq3_decode_frame(), svq3_decode_init(), svq3_decode_mb(), synth_superframe(), tf_RS(), vc1_decode_i_block(), vc1_decode_i_block_adv(), vc1_decode_intra_block(), vp78_update_probability_tables(), vp9_decode_frame(), wavpack_encode_block(), wdec16(), wma_lsp_to_curve_init(), x8_loop_filter(), and xv_get_tag_from_format().

return

Definition at line 224 of file audioconvert.c.