tree aaaabb0d7e68b04d192f955b86e64497f2f0bbae
parent 682a89b6425019ff5236e2fe2e115fdbdb7e0592
author bohanli <bohanli@google.com> 1594768965 -0700
committer Bohan Li <bohanli@google.com> 1596820655 +0000

Add compatiblility with ARF_UPDATE keyframes.

Configure reference buffer update and tweak the encoder
to allow the keyframe to be arf + overlay, which will be added
in a future commit.

Change-Id: I87f32c15332d78f0626a955d940a99a29cc65ef8