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VP8: faster deblock strength calculation

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Convert hev_thresh logic to a LUT, simplify mbedge_lim calculation.
(cherry picked from commit 79dec1541b)
This commit is contained in:
Jason Garrett-Glaser 2011-02-03 22:48:53 -08:00 committed by Michael Niedermayer
parent bffad70c66
commit 9efa368f19
1 changed files with 15 additions and 14 deletions
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29
libavcodec/vp8.c
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@ -1505,23 +1505,24 @@ static av_always_inline void filter_mb(VP8Context *s, uint8_t *dst[3], VP8Filter
int inner_filter = f->inner_filter;
int linesize = s->linesize;
int uvlinesize = s->uvlinesize;
static const uint8_t hev_thresh_lut[2][64] = {
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3,
3, 3, 3, 3 },
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 1, 1, 1, 1, 1,
1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1,
2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2,
2, 2, 2, 2 }
};
if (!filter_level)
return;
mbedge_lim = 2*(filter_level+2) + inner_limit;
bedge_lim = 2* filter_level + inner_limit;
hev_thresh = filter_level >= 15;
bedge_lim = 2*filter_level + inner_limit;
mbedge_lim = bedge_lim + 4;
if (s->keyframe) {
if (filter_level >= 40)
hev_thresh = 2;
} else {
if (filter_level >= 40)
hev_thresh = 3;
else if (filter_level >= 20)
hev_thresh = 2;
}
hev_thresh = hev_thresh_lut[s->keyframe][filter_level];
if (mb_x) {
s->vp8dsp.vp8_h_loop_filter16y(dst[0], linesize,
@ -1577,8 +1578,8 @@ static av_always_inline void filter_mb_simple(VP8Context *s, uint8_t *dst, VP8Fi
if (!filter_level)
return;
mbedge_lim = 2*(filter_level+2) + inner_limit;
bedge_lim = 2* filter_level + inner_limit;
bedge_lim = 2*filter_level + inner_limit;
mbedge_lim = bedge_lim + 4;
if (mb_x)
s->vp8dsp.vp8_h_loop_filter_simple(dst, linesize, mbedge_lim);