tree e3eee9e126f7bbca5351f7fe4f9b7d42090d8117
parent 10e9944d31273cea7935d09cfdc2c2316db95917
author Marco Paniconi <marpan@google.com> 1596731249 -0700
committer Marco Paniconi <marpan@google.com> 1596735379 -0700

rtc-svc: Add case of temporal layers with multi-reference

For 3 temporal layers: allow for prediction off two additional
references (golden and altref), similar to the 1 layer (non-svc)
case. This is done for layers via the AV1E_SET_SVC_REF_FRAME_CONFIG
encoder control.

Add this mode to svc_datarate_test, and to the svc sample encoder
(case#3, and remove existing case#4, which is not needed).

This mode gives ~7% bdrate gain over current 3 TL case
(with single reference), for speed 7 on rtc_derf.

Change-Id: I5ce5ed732ad2f1f8925e369a8fabd6f9541a9579