tree 668bf8bd1ec1edef9f223a675d9abf444cf5a4e3
parent 12be4000a00a51525f665f7412acb6efdab3d890
author chiyotsai <chiyotsai@google.com> 1649886426 -0700
committer Chi Yo Tsai <chiyotsai@google.com> 1651085968 +0000

RTC: Lower mv resolution for zeromv

This commit adds a speed feature that downsizes the mv
resolution to halfpel for zero mv if the variance of error is small.

| SPD_SET | TESTSET | AVG_PSNR | OVR_PSNR |  SSIM   |  SPD  |
|---------|---------|----------|----------|---------|-------|
|   10    |   rtc   | +0.495%  | +0.392%  | +0.732% | +1.2% |
|   10    |rtc_derf | +0.028%  | +0.012%  | +0.012% | +0.6% |

STATS_CHANGED

Change-Id: I612fa326efd8dd4be7411708b27ef5321900228e