tree 458de3af1733b7e795fbdcb3eebbef0ab4f71648
parent bc82d38fa924dd5763ce9695b607217a8c96a994
author Marco Paniconi <marpan@google.com> 1572996240 -0800
committer Marco Paniconi <marpan@google.com> 1573176176 +0000

rtc: Add golden as possible reference in variance part

For variance-based partition and nonrd pickmode:
check if golden reference is better as reference
for variance-based partition, and if so, avoid the
reduced search/testing  on golden reference in
nonrd_pickmode.

Add frame level speed feature to enable/disable
reduced golden search/testing in nonrd_pickmode.
Enable it only at speed 8.

Avg bdrate gain for speed 8 rtc set:
~0.5%, several clips over 1%. Speed loss of ~5%
measured on clip (720p) with max bdrate gain.

Change-Id: I4364286356c50f4663f1550dc0caf477671fd9b9