tree 0b844c810d5a36aed8b103711b67f84888a8ca10
parent 2613b5e9d6549f8ab87211165454ad40b7675319
author hui su <huisu@google.com> 1458862684 -0700
committer hui su <huisu@google.com> 1458880998 -0700

Speed up ext-intra

Skip filtered intra modes search in inter frame when DC mode is
worse than the best mode so far.

With ext-intra enabled, the overall speed is increased by 20~40%;
performance drop is 0.03% on lowres and 0.05% on midres.

Change-Id: I75d2503b067cf5e46e3533b97fb01497e125baa7