Jingning Han
a517343ca3
Enable per transformed block zero coeffs forcing
...
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
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