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H.264: improve qp_thresh check

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Eliminate redundant check in filter_mb_fast, consider bit depth in calculating qp_thresh.
This commit is contained in:
Jason Garrett-Glaser
2011-07-06 14:08:30 -07:00
parent 99b6d2c065
commit 6a2176aac0
2 changed files with 4 additions and 6 deletions
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6
libavcodec/h264_loopfilter.c
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@@ -216,7 +216,7 @@ void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y,
MpegEncContext * const s = &h->s;
int mb_xy;
int mb_type, left_type, top_type;
int qp, qp0, qp1, qpc, qpc0, qpc1, qp_thresh;
int qp, qp0, qp1, qpc, qpc0, qpc1;
int chroma = !(CONFIG_GRAY && (s->flags&CODEC_FLAG_GRAY));
int chroma444 = CHROMA444;
@@ -241,10 +241,6 @@ void ff_h264_filter_mb_fast( H264Context *h, int mb_x, int mb_y, uint8_t *img_y,
qp1 = (qp + qp1 + 1) >> 1;
qpc0 = (qpc + qpc0 + 1) >> 1;
qpc1 = (qpc + qpc1 + 1) >> 1;
qp_thresh = 15+52 - h->slice_alpha_c0_offset;
if(qp <= qp_thresh && qp0 <= qp_thresh && qp1 <= qp_thresh &&
qpc <= qp_thresh && qpc0 <= qp_thresh && qpc1 <= qp_thresh)
return;
if( IS_INTRA(mb_type) ) {
static const int16_t bS4[4] = {4,4,4,4};