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Skip redundant motion search in 4x4 level rd loop

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This commit makes the encoder to perform motion search only once
per reference frame type for each 4x4/4x8/8x4 block. For bus_cif
at 2000 kbps, the runtime goes from 253812ms -> 217817ms
(14% speed-up) for speed 0.

Change-Id: I5f17599ccc8cfaf93ccb4f98fcb6008af6d79e92
This commit is contained in:
Jingning Han 2013-07-16 12:04:07 -07:00
parent 90ebfe621f
commit a142d6fc93
1 changed files with 27 additions and 23 deletions
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50
vp9/encoder/vp9_rdopt.c
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@ -1842,7 +1842,8 @@ static void rd_check_segment_txsize(VP9_COMP *cpi, MACROBLOCK *x,
vpx_memcpy(t_left_s, t_left, sizeof(t_left_s));
// motion search for newmv (single predictor case only)
if (mbmi->ref_frame[1] <= 0 && this_mode == NEWMV) {
if (mbmi->ref_frame[1] <= 0 && this_mode == NEWMV &&
seg_mvs[i][mbmi->ref_frame[0]].as_int == INVALID_MV) {
int step_param = 0;
int further_steps;
int thissme, bestsme = INT_MAX;
@ -1914,7 +1915,10 @@ static void rd_check_segment_txsize(VP9_COMP *cpi, MACROBLOCK *x,
// restore src pointers
mi_buf_restore(x, orig_src, orig_pre);
} else if (mbmi->ref_frame[1] > 0 && this_mode == NEWMV) {
}
if (mbmi->ref_frame[1] > 0 && this_mode == NEWMV &&
mbmi->interp_filter == vp9_switchable_interp[0]) {
if (seg_mvs[i][mbmi->ref_frame[1]].as_int == INVALID_MV ||
seg_mvs[i][mbmi->ref_frame[0]].as_int == INVALID_MV)
continue;
@ -3415,28 +3419,28 @@ int64_t vp9_rd_pick_inter_mode_sb(VP9_COMP *cpi, MACROBLOCK *x,
if ((newbest && cm->mcomp_filter_type == SWITCHABLE) ||
(mbmi->interp_filter == cm->mcomp_filter_type &&
cm->mcomp_filter_type != SWITCHABLE)) {
tmp_best_rdu = tmp_rd;
tmp_best_rate = rate;
tmp_best_ratey = rate_y;
tmp_best_distortion = distortion;
tmp_best_skippable = skippable;
tmp_best_mbmode = *mbmi;
tmp_best_partition = *x->partition_info;
for (i = 0; i < 4; i++)
tmp_best_bmodes[i] = xd->mode_info_context->bmi[i];
pred_exists = 1;
if (switchable_filter_index == 0 &&
cpi->sf.use_rd_breakout &&
best_rd < INT64_MAX) {
if (tmp_best_rdu / 2 > best_rd) {
// skip searching the other filters if the first is
// already substantially larger than the best so far
tmp_best_filter = mbmi->interp_filter;
tmp_best_rdu = INT64_MAX;
break;
}
}
tmp_best_rdu = tmp_rd;
tmp_best_rate = rate;
tmp_best_ratey = rate_y;
tmp_best_distortion = distortion;
tmp_best_skippable = skippable;
tmp_best_mbmode = *mbmi;
tmp_best_partition = *x->partition_info;
for (i = 0; i < 4; i++)
tmp_best_bmodes[i] = xd->mode_info_context->bmi[i];
pred_exists = 1;
if (switchable_filter_index == 0 &&
cpi->sf.use_rd_breakout &&
best_rd < INT64_MAX) {
if (tmp_best_rdu / 2 > best_rd) {
// skip searching the other filters if the first is
// already substantially larger than the best so far
tmp_best_filter = mbmi->interp_filter;
tmp_best_rdu = INT64_MAX;
break;
}
}
}
} // switchable_filter_index loop
if (tmp_best_rdu == INT64_MAX)
continue;