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vp9: Set short circuit to level 3 for VGA for speed 8.

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vp9: Set short circuit to level 3 for VGA for speed 8. Also change the
threshold_32x32 to 5/8*thresholds[1] to improve quality regression
caused to VGA clips.

Change-Id: Ia1590e91e7cb22be78d5b85013387bb1be4272e3
This commit is contained in:
Jerome Jiang 2017-01-04 11:22:51 -08:00
parent 1ca1515dd3
commit 72746c079d
2 changed files with 2 additions and 2 deletions
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2
vp9/encoder/vp9_encodeframe.c
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@ -745,7 +745,7 @@ static void set_low_temp_var_flag(VP9_COMP *cpi, MACROBLOCK *x, MACROBLOCKD *xd,
if ((*this_mi)->sb_type == BLOCK_32X32) {
int64_t threshold_32x32 = (cpi->sf.short_circuit_low_temp_var == 1 ||
cpi->sf.short_circuit_low_temp_var == 3)
? ((3 * thresholds[1]) >> 2)
? ((5 * thresholds[1]) >> 3)
: (thresholds[1] >> 1);
if (vt->split[i].part_variances.none.variance < threshold_32x32)
x->variance_low[i + 5] = 1;

2
vp9/encoder/vp9_speed_features.c
View File

@ -522,7 +522,7 @@ static void set_rt_speed_feature(VP9_COMP *cpi, SPEED_FEATURES *sf, int speed,
// More aggressive short circuit for speed 8.
sf->short_circuit_low_temp_var = 2;
// More aggressive short circuit for low resolution
if (cm->width <= 352 && cm->height <= 288) {
if (cm->width <= 640 && cm->height <= 480) {
sf->short_circuit_low_temp_var = 3;
}
}