tree b54e988484e2a40f4ec22811c6e5b086325e0ea4
parent 9e9561d43da40788b2502b903c3d10f0c0f6c432
author Marco Paniconi <marpan@google.com> 1567032416 -0700
committer Marco Paniconi <marpan@google.com> 1567117239 +0000

rtc-svc: Skip testing of non-zeromv for inter-layer pred

For RTC SVC in non-rd mode: skip testing of non-zeromv for
inter-(spatial) layer prediction. Add svc frame level flags,
updated for each frame based on the refresh and ref_idx map.

Negligible quality loss, ~20% speedup on enhancement layer of
superframes whose spatial layer is key frame.
Tested for 2 spatial layers with the svc sample encoder.

Change-Id: Ib8e6f38d8295dcf3ebdb4d5667c4731a4ad845d7