[FFmpeg-cvslog] vp9: clamp final zero MV if find_ref_mvs() found no suitable candidates.

[Ronald S. Bultje]

ffmpeg | branch: master | Ronald S. Bultje <rsbultje at gmail.com> | Mon Jun  1 11:17:44 2015 -0400| [138581c41a129bdc86b97230d63dfc7fc98271a4] | committer: Michael Niedermayer

vp9: clamp final zero MV if find_ref_mvs() found no suitable candidates.

This may actually result in a non-zero MV. Fixes ticket 4583.

Signed-off-by: Michael Niedermayer <michaelni at gmx.at>

> http://git.videolan.org/gitweb.cgi/ffmpeg.git/?a=commit;h=138581c41a129bdc86b97230d63dfc7fc98271a4
---

 libavcodec/vp9.c |    1 +
 1 file changed, 1 insertion(+)

diff --git a/libavcodec/vp9.c b/libavcodec/vp9.c
index 93b3c96..c4efd42 100644
--- a/libavcodec/vp9.c
+++ b/libavcodec/vp9.c
@@ -1273,6 +1273,7 @@ static void find_ref_mvs(VP9Context *s,
     }
 
     AV_ZERO32(pmv);
+    clamp_mv(pmv, pmv, s);
 #undef INVALID_MV
 #undef RETURN_MV
 #undef RETURN_SCALE_MV