shithub: libvpx

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ref: 7c7e4d4eb8ddc1f7884dcab380a5850fef8b2add
parent: 7c4992c4667f4f3392b911e3a8b17a776a216c5f
author: Yunqing Wang <yunqingwang@google.com>
date: Wed Oct 22 10:37:38 EDT 2014

vp9_ethread: allocate frame contexts outside VP9_COMMON struct

This patch allocated frame contexts outside VP9_COMMON. This allows
multiple threads to share the same copy of frame contexts, and
reduces the overhead. It also guarantees the correct update of
these contexts during bitstream packing. This patch doesn't change
encoding result.

Change-Id: Ic181a2460b891d1d587278a6d02d8057b9dbd353