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Enable per transformed block zero coeffs forcing

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This commit enables forcing all coefficients zero per transformed
block, when its rate-distortion cost is lower than regular coeff
quantization.

The overall performance improvement (including its parent patch on
calculating rd cost per transformed block) at speed 1:
derf:  0.298%
yt:    0.452%
hd:    0.741%
stdhd: 0.006%

Change-Id: I66005fe0fd7af192c3eba32e02fd6d77952accb5
This commit is contained in:
Jingning Han
2013-09-20 16:29:24 -07:00
parent 78fbb10642
commit a517343ca3
4 changed files with 29 additions and 1 deletions
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2
vp9/encoder/vp9_block.h
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@@ -34,6 +34,7 @@ typedef struct {
typedef struct {
MODE_INFO mic;
PARTITION_INFO partition_info;
unsigned char zcoeff_blk[256];
int skip;
int_mv best_ref_mv;
int_mv second_best_ref_mv;
@@ -136,6 +137,7 @@ struct macroblock {
int mv_row_min;
int mv_row_max;
unsigned char zcoeff_blk[TX_SIZES][256];
int skip;
int encode_breakout;