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Properly reset rate and distortion value for zero pred residual case

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When the prediction residuals are all zero, reset the coeff rate
cost and the distortion value to be zero. This change doesn't affect
lowres set significantly, but improves several clips in the midres
set, like sintel_480p and mobisode2_480p, by a few percents. The
average performance for midres set is improved by 0.2%.

Change-Id: Idd5ebf2652e556a1b1c569fe3c48dacef3f11c32
This commit is contained in:
Jingning Han 2016-07-07 22:41:56 -07:00
parent 7c393d097f
commit 1bf039ccd5
1 changed files with 4 additions and 0 deletions
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4
vp10/encoder/rdopt.c
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@ -7899,6 +7899,10 @@ static int64_t handle_inter_mode(VP10_COMP *cpi, MACROBLOCK *x,
*rate2 += vp10_cost_bit(vp10_get_skip_prob(cm, xd), 1);
*distortion = skip_sse_sb;
*psse = skip_sse_sb;
*rate_y = 0;
*rate_uv = 0;
*skippable = 1;
}
#if CONFIG_OBMC || CONFIG_WARPED_MOTION