tree d19b770641bfa374f9264b2d776692e167b43f04
parent 5f166b81d805d7b68dbf7310330260dcb56a7e2e
author Yunqing Wang <yunqingwang@google.com> 1661384102 -0700
committer Yunqing Wang <yunqingwang@google.com> 1661816142 +0000

Optimize source content calculation

Determined whether grading content can be skipped based on the frame
level sad stat.

Borg test result on rtc_derf set:
         avg_psnr:  ovr_psnr:   ssim:  encoding_spdup:
speed 9:  -0.004     -0.013    -0.061     0.2
speed 10:  0.099      0.113     0.176     0.7

STATS_CHANGED for rtc_derf speed 9 & 10

Change-Id: I3c199c7aa89f21a9dd0eb05bf1b81a6dc0f32b5a