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hevc/sao: do in-place band filtering when possible 

The copies are only needed when data must be restored, so skip them
when it must not be.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
This commit is contained in:
Christophe Gisquet 2015-02-03 14:06:39 +01:00 committed by Michael Niedermayer
parent ed450d4acf
commit 97996eff4f
1 changed files with 9 additions and 2 deletions
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11
libavcodec/hevc_filter.c
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@ -319,16 +319,23 @@ static void sao_filter_CTB(HEVCContext *s, int x, int y)
switch (sao->type_idx[c_idx]) {
case SAO_BAND:
copy_CTB_to_hv(s, src, stride_src, x0, y0, width, height, c_idx,
x_ctb, y_ctb);
if (s->pps->transquant_bypass_enable_flag ||
(s->sps->pcm.loop_filter_disable_flag && s->sps->pcm_enabled_flag)) {
dst = lc->edge_emu_buffer;
stride_dst = 2*MAX_PB_SIZE;
copy_CTB(dst, src, width << s->sps->pixel_shift, height, stride_dst, stride_src);
copy_CTB_to_hv(s, src, stride_src, x0, y0, width, height, c_idx,
x_ctb, y_ctb);
s->hevcdsp.sao_band_filter[tab](src, dst, stride_src, stride_dst,
sao->offset_val[c_idx], sao->band_position[c_idx],
width, height);
restore_tqb_pixels(s, src, dst, stride_src, stride_dst,
x, y, width, height, c_idx);
} else {
s->hevcdsp.sao_band_filter[tab](src, src, stride_src, stride_src,
sao->offset_val[c_idx], sao->band_position[c_idx],
width, height);
}
sao->type_idx[c_idx] = SAO_APPLIED;
break;
case SAO_EDGE: