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Enable chessboard inter prediction filter type search

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This commit enables a chessboard pattern prediction filter type
search scheme for rate-distortion optimization speed-up. For the
inferred motion vector modes, the encoder can re-use its above/left
neighbor blocks' prediction filter type and skip a full test on
all possible filter types. Such operation is turned on/off
alternatively in a chessboard manner.

It is turned on in speed 3. For test clip pedestrian 1080p, the
runtime is reduced from 231500 ms -> 221700 ms. The compression
performance is changed:
derf:  -0.147%
yt:    -0.134%
hd:    -0.079%
stdhd: -0.220%

Change-Id: I1912f278e7576c2dc632688e3ad7a257410c605a
This commit is contained in:
Jingning Han 2014-07-22 16:32:20 -07:00
parent 5de6114e8f
commit 54ad09586c
3 changed files with 18 additions and 3 deletions
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16
vp9/encoder/vp9_rdopt.c
View File

@ -2040,7 +2040,18 @@ static int64_t handle_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
uint8_t *orig_dst[MAX_MB_PLANE];
int orig_dst_stride[MAX_MB_PLANE];
int rs = 0;
INTERP_FILTER best_filter = cm->interp_filter;
INTERP_FILTER best_filter = SWITCHABLE;
int bsl = mi_width_log2_lookup[bsize];
int pred_filter_search = cpi->sf.cb_pred_filter_search ?
(((mi_row + mi_col) >> bsl)) & 0x01 : 0;
if (pred_filter_search && this_mode != NEWMV) {
if (xd->up_available)
best_filter = xd->mi[-xd->mi_stride]->mbmi.interp_filter;
else if (xd->left_available)
best_filter = xd->mi[-1]->mbmi.interp_filter;
}
if (is_comp_pred) {
if (frame_mv[refs[0]].as_int == INVALID_MV ||
@ -2124,10 +2135,9 @@ static int64_t handle_inter_mode(VP9_COMP *cpi, MACROBLOCK *x,
rd_opt->filter_cache[i] = INT64_MAX;
if (cm->interp_filter != BILINEAR) {
best_filter = EIGHTTAP;
if (x->source_variance < cpi->sf.disable_filter_search_var_thresh) {
best_filter = EIGHTTAP;
} else {
} else if (best_filter == SWITCHABLE) {
int newbest;
int tmp_rate_sum = 0;
int64_t tmp_dist_sum = 0;

2
vp9/encoder/vp9_speed_features.c
View File

@ -116,6 +116,7 @@ static void set_good_speed_feature(VP9_COMP *cpi, VP9_COMMON *cm,
sf->disable_split_mask = DISABLE_ALL_INTER_SPLIT;
sf->adaptive_pred_interp_filter = 0;
sf->cb_pred_filter_search = 1;
sf->lf_motion_threshold = LOW_MOTION_THRESHOLD;
sf->last_partitioning_redo_frequency = 3;
@ -332,6 +333,7 @@ void vp9_set_speed_features(VP9_COMP *cpi) {
sf->use_lp32x32fdct = 0;
sf->adaptive_motion_search = 0;
sf->adaptive_pred_interp_filter = 0;
sf->cb_pred_filter_search = 0;
sf->use_quant_fp = 0;
sf->reference_masking = 0;
sf->partition_search_type = SEARCH_PARTITION;

3
vp9/encoder/vp9_speed_features.h
View File

@ -283,6 +283,9 @@ typedef struct SPEED_FEATURES {
// was selected, and 2 means we use 8 tap if no 8x8 filter mode was selected.
int adaptive_pred_interp_filter;
// Chessboard pattern prediction filter type search
int cb_pred_filter_search;
// Fast quantization process path
int use_quant_fp;