ref: 9c0a2a7935c37c6925600770fa2d9ca73375cd73
parent: 8d006a16c53e10d481d1df148140ee7c2561460e
author: Jingning Han <jingning@google.com>
date: Mon Feb 29 11:52:44 EST 2016
Port alt reference frame filter improvement to VP9 Use sharp filter to generate motion compensated reference for temporal filtering. It improves the average coding performance of VP9 speed 0: derf 0.34% hevcmr 0.38% stdhd 0.58% Change-Id: I1772a051be545de8c343055274e5ca0929d19cda