tree aa85d2a8023042d650be1fb4299785da5ea138be
parent 3692ef9d26fab7dc217f8684e822e13eba8243d6
author Marco Paniconi <marpan@google.com> 1575566254 -0800
committer Marco Paniconi <marpan@google.com> 1575578128 +0000

rtc: Fix to usable_ref_frame in nonrd pickmode

When frames_since_golden = 0, set
skip_ref_find_pred[GOLDEN] to 1 and set
usable_ref_frame to LAST only if ALT_REF is
not used. This prevents ALT_REF reference
from being skipped when frame_since_golden = 0.

Also usable_ref_frame should be used in update
of rd_thresh after mode selection.

Smalll bdrate gain on low-res speed 7 of ~0.22.
Negligible speed impact observed on QVGA clip.

Change-Id: I497cee3704a2ab034edae55c749eb6b4e75d6265