tree 3c79f58e2369ad0b978be61841d592d3ad862ac0
parent 2a4c81329afdcc2fc2d1301a8e356aabd87281c3
author Cheng Chen <chengchen@google.com> 1530928864 -0700
committer Cheng Chen <chengchen@google.com> 1536796303 +0000

Bitmask patch 0: Store info for bitmask at decoder

Purpose: build bitmask for loop filtering to speed up the decoder.
Result: make decoder 6% faster, on single thread.

The flag LOOP_FILTER_BITMASK controls whether the new feature is used.
Now it is turned off, I will turn it on after all following CLs are
checked int. Please expect a few following up CLs.

This CL:
Store information that determines filter is applied or not at decoder.
Then build bitmask for the whole frame, after all tiles decoded.

Change-Id: I3902ed825b674cff8131d0e9cbc14df3f9a566f6