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Enable encode breakout in real time

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For real time speed 7, once encode breakout is on(i.e. encoding
setting --static-thresh=1), a proper encode breakout threshold
is set to speed up the encoder.

Set --static-thresh=1, RTC set borg test showed a slight overall
psnr loss of 0.162%, but ssim gain of 0.287%. The average speedup
on RTC set is 6%, and for some clips, the speedup can be 10+%.

Change-Id: Id522d9ce779ff7c699936d13d0c47083de4afb85
This commit is contained in:
Yunqing Wang 2014-06-27 17:44:32 -07:00
parent 9d41313e4b
commit dee5782f93
2 changed files with 11 additions and 0 deletions
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7
vp9/encoder/vp9_speed_features.c
View File

@ -280,6 +280,8 @@ static void set_rt_speed_feature(VP9_COMP *cpi, SPEED_FEATURES *sf,
}
if (speed >= 7) {
sf->lpf_pick = LPF_PICK_MINIMAL_LPF;
sf->encode_breakout_thresh = (MIN(cm->width, cm->height) >= 720) ?
800 : 300;
}
if (speed >= 8) {
int i;
@ -349,6 +351,7 @@ void vp9_set_speed_features(VP9_COMP *cpi) {
// to FIXED_PARTITION.
sf->always_this_block_size = BLOCK_16X16;
sf->search_type_check_frequency = 50;
sf->encode_breakout_thresh = 0;
// Recode loop tolerence %.
sf->recode_tolerance = 25;
@ -392,4 +395,8 @@ void vp9_set_speed_features(VP9_COMP *cpi) {
if (!cpi->oxcf.frame_periodic_boost) {
sf->max_delta_qindex = 0;
}
if (cpi->encode_breakout && oxcf->mode == REALTIME &&
sf->encode_breakout_thresh > cpi->encode_breakout)
cpi->encode_breakout = sf->encode_breakout_thresh;
}

4
vp9/encoder/vp9_speed_features.h
View File

@ -357,6 +357,10 @@ typedef struct SPEED_FEATURES {
// can be reused in final block encoding process. It is enabled only for real-
// time mode speed 6.
int reuse_inter_pred_sby;
// This variable sets the encode_breakout threshold. Currently, it is only
// enabled in real time mode.
int encode_breakout_thresh;
} SPEED_FEATURES;
struct VP9_COMP;