tree e22a7c83321efec46b353b25b4df09e80d7b1f7f
parent e01597462e2f8d0a22bc6753346203aa5434ebb8
author Marco Paniconi <marpan@google.com> 1598553037 -0700
committer Marco Paniconi <marpan@google.com> 1598566113 +0000

rtc: Cleanup estimate_single_ref_costs for nonrd_pickmode

estimate_single_ref_costs() was using code from rdopt,
accouting for additional references (last2, last3, bwdref, altref2),
and whether they are forward or backward. For nonrd only
(last, golden, altref) are used, and they are all forward refs.
So simplicify the single_ref_costs for this case.

bdrate change is negligible/neutral for speed >=7
on rtc_derf and rtc set.

Change-Id: I3660415397cf85671d4e274bdf52c2dcffe86da6