tree 307a36034609bf460c6edee6fa450c88d371450e
parent 1a6f173238e237b823eb6256a011c0ef54263589
author chiyotsai <chiyotsai@google.com> 1578356686 -0800
committer Chi Yo Tsai <chiyotsai@google.com> 1579287533 +0000

Prepare for sb level multi-pass encoding

This starts the process of adding multipass encoding at the superblock
level.

At the first stage of the process, we add the ability to encode
the same block twice while maintaining the same output to ensure that
there is no state leakage from pass to pass.

BUG=aomedia:2573

Change-Id: Ib9b7eaf7d47a658d44a1bbe8b435b671548fedd0