tree cf690752f0863009ec484715d173673ac2aa2545
parent e147ef20a27c7e2e1a37a97ad9093e84ae596aa8
author Marco Paniconi <marpan@google.com> 1631166446 -0700
committer Marco Paniconi <marpan@google.com> 1631310905 +0000

rtc: Adjust logic for gf refresh based on Q

For CBR rtc mode: after the QP is set before
encoding the frame, check if we should force refresh
or disable refresh of golden frame, based on the QP for
current frame and past/avg_qp. This will make the golden
reference, which is used as second (longer term) reference
for 1 layer, somewhat better quality (since it will tend
to get refreshed on frames with lower QP), and so would
generally improve the prediction.

~0.5% bdrate gain on rtc set for speed 9,
no speed change.

Change-Id: I4b2ea99e5f8e401d096e73be228bc3e7b2288a17