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| author | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-10-08 15:59:14 +0100 |
|---|---|---|
| committer | Rostislav Pehlivanov <atomnuker@gmail.com> | 2016-10-18 21:41:18 +0100 |
| commit | d2ae5f77c61a29c3c63cc4c41c74ccfca4167649 (patch) | |
| tree | bd615f22e6807e025da052c411e12e9a7be0852e /libavcodec/aacenc_is.c | |
| parent | 3b02f6dd7be880fd6c1bcaf2fd0c1314dcee7aa6 (diff) | |
| download | ffmpeg-d2ae5f77c61a29c3c63cc4c41c74ccfca4167649.tar.gz | |
aacenc: add SIMD optimizations for abs_pow34 and quantization
Performance improvements:
quant_bands:
with: 681 decicycles in quant_bands, 8388453 runs, 155 skips
without: 1190 decicycles in quant_bands, 8388386 runs, 222 skips
Around 42% for the function
Twoloop coder:
abs_pow34:
with/without: 7.82s/8.17s
Around 4% for the entire encoder
Both:
with/without: 7.15s/8.17s
Around 12% for the entire encoder
Fast coder:
abs_pow34:
with/without: 3.40s/3.77s
Around 10% for the entire encoder
Both:
with/without: 3.02s/3.77s
Around 20% faster for the entire encoder
Signed-off-by: Rostislav Pehlivanov <atomnuker@gmail.com>
Tested-by: Michael Niedermayer <michael@niedermayer.cc>
Reviewed-by: James Almer <jamrial@gmail.com>
Diffstat (limited to 'libavcodec/aacenc_is.c')
| -rw-r--r-- | libavcodec/aacenc_is.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/libavcodec/aacenc_is.c b/libavcodec/aacenc_is.c index 473897b1d0..2f5b7eb8dc 100644 --- a/libavcodec/aacenc_is.c +++ b/libavcodec/aacenc_is.c @@ -59,9 +59,9 @@ struct AACISError ff_aac_is_encoding_err(AACEncContext *s, ChannelElement *cpe, float minthr = FFMIN(band0->threshold, band1->threshold); for (i = 0; i < sce0->ics.swb_sizes[g]; i++) IS[i] = (L[start+(w+w2)*128+i] + phase*R[start+(w+w2)*128+i])*sqrt(ener0/ener01); - abs_pow34_v(L34, &L[start+(w+w2)*128], sce0->ics.swb_sizes[g]); - abs_pow34_v(R34, &R[start+(w+w2)*128], sce0->ics.swb_sizes[g]); - abs_pow34_v(I34, IS, sce0->ics.swb_sizes[g]); + s->abs_pow34(L34, &L[start+(w+w2)*128], sce0->ics.swb_sizes[g]); + s->abs_pow34(R34, &R[start+(w+w2)*128], sce0->ics.swb_sizes[g]); + s->abs_pow34(I34, IS, sce0->ics.swb_sizes[g]); maxval = find_max_val(1, sce0->ics.swb_sizes[g], I34); is_band_type = find_min_book(maxval, is_sf_idx); dist1 += quantize_band_cost(s, &L[start + (w+w2)*128], L34, |