tree 56efa6c5177c3454be41cd6de1fcf852833aa5d3
parent a5397dbaf13c87516bbf404dea35fe49bfe805e3
author Yunqing Wang <yunqingwang@google.com> 1291393581 -0500
committer Yunqing Wang <yunqingwang@google.com> 1291407815 -0500

Improve MV prediction accuracy to achieve performance gain

Add vp8_mv_pred() to better predict starting MV for NEWMV
mode in vp8_rd_pick_inter_mode(). Set different search
ranges according to MV prediction accuracy, which improves
encoder performance without hurting the quality. Also,
as Yaowu suggested, using diamond search result as full
search starting point and therefore adjusting(reducing)
full search range helps the performance.

Change-Id: Ie4a3c8df87e697c1f4f6e2ddb693766bba1b77b6