tree 87334e0c76c7e0917b72830453b15f4577e19898
parent 167a4efbb5219ea774056d116697d7fe6f3afc8e
author Wei-ting Lin <weitinglin@google.com> 1471906352 -0700
committer Wei-ting Lin <weitinglin@google.com> 1472142660 -0700

Separate EXT_ARFs' frame context index

This commit separate the frame index of EXT_ARFs' from other frame
types in the ext-refs setting.

It improves the average RD performance by

0.206% in the lowres, and
0.173% in the midres.

The overall gains for the ext-refs compared to the baseline are

5.665% in the lowres, and
4.883% in the midres.

Change-Id: I6591ad29120880c1aef0bd0b7cf15238c3f3b8f3