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Skip buffer update in sub8x8 rd loop

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This commit allows the encoder to skip a few buffer update steps in
rd_pick_best_mbsegmentation, when early breakout has been triggered
in the rd_check_segment_txsize. It provides about 1% speed-up for
bus_cif at 2000 kbps, in the settings of speed 0.

Change-Id: Ica034f10a24dec572b397d8389a2b81020ebc0b9
This commit is contained in:
Jingning Han 2013-07-19 15:18:05 -07:00
parent 0d204f48b5
commit c725502bf3
1 changed files with 2 additions and 0 deletions
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vp9/encoder/vp9_rdopt.c
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@ -2129,6 +2129,8 @@ static int64_t rd_pick_best_mbsegmentation(VP9_COMP *cpi, MACROBLOCK *x,
rd_check_segment_txsize(cpi, x, &bsi, seg_mvs, mi_row, mi_col);
if (bsi.segment_rd > best_rd)
return INT64_MAX;
/* set it to the best */
for (i = 0; i < 4; i++) {
x->e_mbd.mode_info_context->bmi[i].as_mv[0].as_int = bsi.mvs[i].as_int;