ref: 9bf3bc9a729ddbc909c589b810a80e5be80c1083
parent: e0309e1509560b9a60f866083f4d47176e1d4faa
author: John Koleszar <jkoleszar@google.com>
date: Mon Oct 31 10:42:51 EDT 2011
Correct SPLITMV clamping Prior to this fix, the clamping state of the last subblock partition dominated, whereas the correct behavior is to clamp if any partition needs clamping. This bug was introduced by v0.9.6-232-g6b25501 See also: [1]: http://code.google.com/p/webm/issues/detail?id=371 [2]: https://bugzilla.mozilla.org/show_bug.cgi?id=696390 Change-Id: I444db492b4c4f05f039c7da6f4216da8207dc138
--- a/vp8/decoder/decodemv.c
+++ b/vp8/decoder/decodemv.c
@@ -273,6 +273,7 @@
}
}
+ mbmi->need_to_clamp_mvs = 0;
do /* for each subset j */
{int_mv leftmv, abovemv;
@@ -289,7 +290,7 @@
blockmv = sub_mv_ref(bc, prob, abovemv, leftmv, best_mv, mvc);
- mbmi->need_to_clamp_mvs = vp8_check_mv_bounds(&blockmv,
+ mbmi->need_to_clamp_mvs |= vp8_check_mv_bounds(&blockmv,
mb_to_left_edge,
mb_to_right_edge,
mb_to_top_edge,