commit 3dfba99412cb35b2736992afaca9fdd0d11d8e50
author David Barker <david.barker@argondesign.com> Mon Apr 03 16:10:09 2017 +0100
committer Debargha Mukherjee <debargha@google.com> Thu Apr 20 04:31:54 2017 +0000
tree 3f5503a5fc931a90480b121e2717847287e41278
parent d13c24a57ded89f8667c498ed796ba2d5777e995

Harmonize ext-inter and ref-mv

This changes the behavior of the ext-inter compound modes
as follows:
* NEAREST_NEARESTMV, NEAR_NEARMV, NEW_NEWMV, ZERO_ZEROMV
  work the same as the corresponding compound modes without
  ext-inter
* NEAREST_NEWMV and NEW_NEARESTMV keep their current behavior,
  which is to use the first ref-mv candidate pair for their
  particular reference frames
* NEAR_NEWMV and NEW_NEARMV select between the second, third,
  and fourth candidate pairs.
* NEAREST_NEARMV and NEAR_NEARESTMV use the first candidate
  pair for the NEAREST component and the second, third, or
  fourth candidate pair for the NEAR component.

Also do some minor refactoring and fix compile errors
with --enable-ext-inter --disable-ref-mv

Change-Id: If0d2a60559083b7c1189909d426b705af42d2d0e