tree e9642249cfae747139e9df45ee31a6f034c4dfb0
parent 2ee31b42baff88ec04de10e834bce91cac22fb5a
author Jingning Han <jingning@google.com> 1583341925 -0800
committer Jingning Han <jingning@google.com> 1583455886 +0000

Tpl model based reference frame selection

Use tpl model stats to validate the hypothesis on reference frame
selection. This improves the compression performance. Tested in vbr
mode over 150 frames.

In speed 1,
      avg PSNR    overall PSNR    SSIM
low    -0.186	    -0.187	-0.155
mid    -0.026	    -0.108	-0.063
ugc    -0.104  	    -0.091	-0.124

In speed 2,
      avg PSNR    overall PSNR    SSIM
low    -1.369	    -1.422	-1.809
mid    -1.394	    -1.433	-1.761
ugc    -1.001	    -0.979	-1.063

The average CPU cycles in speed 2 increased by 5%.

STATS_CHANGED

Change-Id: I350ebabaf3974ae7c47ed9b4272485ebce85ac32