tree f42f10d9c9b88d1b34ba841881f822a4cef92a3f
parent d0bba7aa975360f3d45d1da231d4a3286cab67a5
author Marco Paniconi <marpan@google.com> 1662588325 -0700
committer Marco Paniconi <marpan@google.com> 1662601479 +0000

rtc-screen: Improve logic of using golden when color is set

This is an extesion of:
https://aomedia-review.googlesource.com/c/aom/+/162105

Instead of skipping golden completely, which is ~7% bdrate
loss on youtube clip in rtc_screen, only skip if golden
is not set to be a better reference (based on sad in variance part).
If golden is set to be better referene than last
(i.e,ref_frame_prune = 0), then force the
color_sensitivity[0/1]=1 so UV channel is then factored
into the rd cost.

bdrate gain for speed 10 (avg/ovr/ssim): -1.27/-1.30/-1.74
~10% gain on youtube clip.
speed change neutral/small.

Change-Id: I2e5952cc654c98cfc8b71db6014ad29dca680671