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Add prediction mode skipping in non-rd situation

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In non-rd pick_mode code, added mode skipping according to
thresholds. Used rd thresholds now, but we can modified them
later for real-time case.

RTC set borg test showed a 0.095% PSNR gain. For different rtc
clips, the real-time(speed 7) encoder speedup is 2% - 10%.

Change-Id: Ic72535c96b891092c662453be32d3168f7e34dcc
This commit is contained in:
Yunqing Wang 2014-03-19 11:52:13 -07:00
parent 46c71e5eba
commit 49b2330d8b
1 changed files with 19 additions and 0 deletions
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19
vp9/encoder/vp9_pickmode.c
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@ -227,6 +227,12 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
intra_cost_penalty, 0);
const int64_t intra_mode_cost = 50;
unsigned char segment_id = mbmi->segment_id;
const int *const rd_threshes = cpi->rd_threshes[segment_id][bsize];
const int *const rd_thresh_freq_fact = cpi->rd_thresh_freq_fact[bsize];
// Mode index conversion form THR_MODES to MB_PREDICTION_MODE for a ref frame.
int mode_idx[MB_MODE_COUNT] = {0};
x->skip_encode = cpi->sf.skip_encode_frame && x->q_index < QIDX_SKIP_THRESH;
x->skip = 0;
@ -270,6 +276,14 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
mbmi->ref_frame[0] = ref_frame;
// Set conversion index for LAST_FRAME.
if (ref_frame == LAST_FRAME) {
mode_idx[NEARESTMV] = THR_NEARESTMV; // LAST_FRAME, NEARESTMV
mode_idx[NEARMV] = THR_NEARMV; // LAST_FRAME, NEARMV
mode_idx[ZEROMV] = THR_ZEROMV; // LAST_FRAME, ZEROMV
mode_idx[NEWMV] = THR_NEWMV; // LAST_FRAME, NEWMV
}
for (this_mode = NEARESTMV; this_mode <= NEWMV; ++this_mode) {
int rate_mv = 0;
@ -277,6 +291,11 @@ int64_t vp9_pick_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
(1 << INTER_OFFSET(this_mode)))
continue;
if (best_rd < ((int64_t)rd_threshes[mode_idx[this_mode]] *
rd_thresh_freq_fact[this_mode] >> 5) ||
rd_threshes[mode_idx[this_mode]] == INT_MAX)
continue;
if (this_mode == NEWMV) {
if (this_rd < (int64_t)(1 << num_pels_log2_lookup[bsize]))
continue;