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vp9: SVC: Early exit on golden ref in non-rd pickmode.

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For SVC 1 pass real-time: add condition to skip the
golden (spatial) reference mode in non-rd pickmode.
Condition is to skip golden if the sse of zeromv-last mode
is below threshold. And change order in ref_mode_set_svc
to make sure golden zeromv is tested after last-nearest.

Speedup ~3-4% with little/negligible quality loss.

Change-Id: I6cbe314a93210454ba2997945f714015f1b2fca3
This commit is contained in:
Marco 2017-05-01 10:04:31 -07:00
parent d51d3934f5
commit ae0215f945
1 changed files with 16 additions and 2 deletions
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18
vp9/encoder/vp9_pickmode.c
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@ -1163,8 +1163,8 @@ static const REF_MODE ref_mode_set[RT_INTER_MODES] = {
{ ALTREF_FRAME, NEARMV }, { ALTREF_FRAME, NEWMV }
};
static const REF_MODE ref_mode_set_svc[RT_INTER_MODES] = {
{ LAST_FRAME, ZEROMV }, { GOLDEN_FRAME, ZEROMV },
{ LAST_FRAME, NEARESTMV }, { LAST_FRAME, NEARMV },
{ LAST_FRAME, ZEROMV }, { LAST_FRAME, NEARESTMV },
{ LAST_FRAME, NEARMV }, { GOLDEN_FRAME, ZEROMV },
{ GOLDEN_FRAME, NEARESTMV }, { GOLDEN_FRAME, NEARMV },
{ LAST_FRAME, NEWMV }, { GOLDEN_FRAME, NEWMV }
};
@ -1481,6 +1481,8 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, TileDataEnc *tile_data,
int use_golden_nonzeromv = 1;
int force_skip_low_temp_var = 0;
int skip_ref_find_pred[4] = { 0 };
unsigned int sse_zeromv_normalized = UINT_MAX;
unsigned int thresh_svc_skip_golden = 500;
#if CONFIG_VP9_TEMPORAL_DENOISING
VP9_PICKMODE_CTX_DEN ctx_den;
int64_t zero_last_cost_orig = INT64_MAX;
@ -1637,6 +1639,12 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, TileDataEnc *tile_data,
if (ref_frame > usable_ref_frame) continue;
if (skip_ref_find_pred[ref_frame]) continue;
// For SVC, skip the golden (spatial) reference search if sse of zeromv_last
// is below threshold.
if (cpi->use_svc && ref_frame == GOLDEN_FRAME &&
sse_zeromv_normalized < thresh_svc_skip_golden)
continue;
if (sf->short_circuit_flat_blocks && x->source_variance == 0 &&
this_mode != NEARESTMV) {
continue;
@ -1915,6 +1923,12 @@ void vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x, TileDataEnc *tile_data,
model_rd_for_sb_y(cpi, bsize, x, xd, &this_rdc.rate, &this_rdc.dist,
&var_y, &sse_y);
}
// Save normalized sse (between current and last frame) for (0, 0) motion.
if (cpi->use_svc && ref_frame == LAST_FRAME &&
frame_mv[this_mode][ref_frame].as_int == 0) {
sse_zeromv_normalized =
sse_y >> (b_width_log2_lookup[bsize] + b_height_log2_lookup[bsize]);
}
}
if (!this_early_term) {