diff options
| author | Christophe Gisquet <christophe.gisquet@gmail.com> | 2012-11-30 21:49:33 +0100 |
|---|---|---|
| committer | Diego Biurrun <diego@biurrun.de> | 2012-12-07 10:33:39 +0100 |
| commit | 9a16359c38888af6beab7e688fc55eaa60c835ec (patch) | |
| tree | 2e90e358d6cc7699a1a447079114f3cee4b62e27 | |
| parent | 33086f92652b5100dbb03bb2a355ebaa575f2876 (diff) | |
| download | ffmpeg-9a16359c38888af6beab7e688fc55eaa60c835ec.tar.gz | |
AAC SBR: use AVFloatDSPContext's vector_fmul
Around 5% speedup on the code block using 'vector_fmul_add's.
Signed-off-by: Diego Biurrun <diego@biurrun.de>
| -rw-r--r-- | libavcodec/aacsbr.c | 11 |
1 files changed, 6 insertions, 5 deletions
diff --git a/libavcodec/aacsbr.c b/libavcodec/aacsbr.c index 3fbba6f1dc..add9f18b49 100644 --- a/libavcodec/aacsbr.c +++ b/libavcodec/aacsbr.c @@ -74,7 +74,6 @@ enum { static VLC vlc_sbr[10]; static const int8_t vlc_sbr_lav[10] = { 60, 60, 24, 24, 31, 31, 12, 12, 31, 12 }; -static const DECLARE_ALIGNED(16, float, zero64)[64]; #define SBR_INIT_VLC_STATIC(num, size) \ INIT_VLC_STATIC(&vlc_sbr[num], 9, sbr_tmp[num].table_size / sbr_tmp[num].elem_size, \ @@ -1174,7 +1173,7 @@ static void sbr_qmf_analysis(DSPContext *dsp, FFTContext *mdct, * (14496-3 sp04 p206) */ static void sbr_qmf_synthesis(DSPContext *dsp, FFTContext *mdct, - SBRDSPContext *sbrdsp, + SBRDSPContext *sbrdsp, AVFloatDSPContext *fdsp, float *out, float X[2][38][64], float mdct_buf[2][64], float *v0, int *v_off, const unsigned int div) @@ -1205,7 +1204,7 @@ static void sbr_qmf_synthesis(DSPContext *dsp, FFTContext *mdct, mdct->imdct_half(mdct, mdct_buf[1], X[1][i]); sbrdsp->qmf_deint_bfly(v, mdct_buf[1], mdct_buf[0]); } - dsp->vector_fmul_add(out, v , sbr_qmf_window , zero64, 64 >> div); + fdsp->vector_fmul (out, v , sbr_qmf_window , 64 >> div); dsp->vector_fmul_add(out, v + ( 192 >> div), sbr_qmf_window + ( 64 >> div), out , 64 >> div); dsp->vector_fmul_add(out, v + ( 256 >> div), sbr_qmf_window + (128 >> div), out , 64 >> div); dsp->vector_fmul_add(out, v + ( 448 >> div), sbr_qmf_window + (192 >> div), out , 64 >> div); @@ -1703,12 +1702,14 @@ void ff_sbr_apply(AACContext *ac, SpectralBandReplication *sbr, int id_aac, nch = 2; } - sbr_qmf_synthesis(&ac->dsp, &sbr->mdct, &sbr->dsp, L, sbr->X[0], sbr->qmf_filter_scratch, + sbr_qmf_synthesis(&ac->dsp, &sbr->mdct, &sbr->dsp, &ac->fdsp, + L, sbr->X[0], sbr->qmf_filter_scratch, sbr->data[0].synthesis_filterbank_samples, &sbr->data[0].synthesis_filterbank_samples_offset, downsampled); if (nch == 2) - sbr_qmf_synthesis(&ac->dsp, &sbr->mdct, &sbr->dsp, R, sbr->X[1], sbr->qmf_filter_scratch, + sbr_qmf_synthesis(&ac->dsp, &sbr->mdct, &sbr->dsp, &ac->fdsp, + R, sbr->X[1], sbr->qmf_filter_scratch, sbr->data[1].synthesis_filterbank_samples, &sbr->data[1].synthesis_filterbank_samples_offset, downsampled); |