commit 8e689e4b3db605ae5392c4ea0d7f7ecf110052ee
author Yue Chen <yuec@google.com> Fri Jun 02 10:56:10 2017 -0700
committer Yue Chen <yuec@google.com> Mon Jun 12 17:12:00 2017 +0000
tree 5737f6779884278ce84172eadf0877ad85b80ad2
parent 67e15578bee52b52666759ad35a4fa7655d92957

supertx: code refactoring + resolve conflicts with baseline

Refactoring: split prediction+extension for each plane, so we can
handle luma/chroma supertx pred in different ways.
Compatibility fix: fix conflicts with cb4x4 and chroma_sub8x8, now
for chroma sub8x8 supertx, only the top-left(basic cb4x4) or the
the bottom-right(cb4x4 + chroma_sub8x8) predictor will be used
without any blending within a 8x8 unit.

Change-Id: I6cf7b12768a82d3c7e01811ada02de84af9bd8ac