commit 4e8d35a461e7a45f5134715b010ed38be986fb00
author Alpha Lam <hclam@chromium.org> Tue Aug 09 20:59:45 2011 +0100
committer John Koleszar <jkoleszar@google.com> Fri Aug 19 10:29:41 2011 -0400
tree ba1cc4eb7d83fbd11cefe2269176df0ebc55135a
parent b84e8f20c3aca0f2a65265cf704cc7c15a2c93d4

Copy less when active map is in use

When active map is specified and the current frame is not a key frame,
golden frame nor a altref frame then copy only those active regions.

This significantly reduces encoding time by as much as 19% on the test
system where realtime encoding is used. This is particularly useful
when the frame size is large (e.g. 2560x1600) and there's only a few
action macroblocks.

Change-Id: If394a813ec2df5a0201745d1348dbde4278f7ad4