tree 2761536d75ad9cdef97e83d82954be083010a041
parent a21966bb9644f4a5cd1cec137127679cac62aa1c
author Yunqing Wang <yunqingwang@google.com> 1544056427 -0800
committer Yunqing Wang <yunqingwang@google.com> 1544137034 +0000

Optimize temporal filter applying

For alt_ref src frame, no need to calculate the weight for every
pixel, and the weight is the same for the whole frame. This patch
handles this case separately to speed up the filtering process.

Change-Id: Ia67389c0e437f2cf5d734ef28d6e50dcec7a7334