commit 52a4b11d515f305ec0544c356bf2607c1b402d1f
author Alex Converse <aconverse@google.com> Thu Nov 03 13:58:49 2016 -0700
committer Alex Converse <aconverse@google.com> Fri Dec 02 00:35:07 2016 +0000
tree e5c6299139db21b746fda157239d7c0f8fa8e2f5
parent ffb8b8b21864957f1a801976971b000ae4bf3d12

ans: Refill state at the end of the decoding process.

This should have no effect on the bitstream format (see also no related
encoder change). This is like moving code from the top of the loop to
the bottom of the loop.

This change allows us to:
* Make sure we consume the final renormalization byte after the last
symbol in an ANS partition.
* Move back toward a single renormalization operation for some ANS modes
since we know the bounds of the state mutation algorithm that got us out
of the valid state range.

Change-Id: Ia80246fd0ed805aa61b913a362546b3f08e4d79c