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authorLaurent Aimar <fenrir@videolan.org>2011-09-21 20:46:30 +0200
committerMichael Niedermayer <michaelni@gmx.at>2011-09-22 00:42:28 +0200
commit6a0e78929aa7d6b2c6b598c1589fb0e48fccb132 (patch)
treeac544cc04403d00b59a9d74fe72bd1f9b64a84e8
parentb64269ce5528bdbec8af671042f97af1242cf044 (diff)
downloadffmpeg-6a0e78929aa7d6b2c6b598c1589fb0e48fccb132.tar.gz
Check for missing reference in vp5/6 decoder.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
-rw-r--r--libavcodec/vp56.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/vp56.c b/libavcodec/vp56.c
index 0c6f45a767..f3ffa44a51 100644
--- a/libavcodec/vp56.c
+++ b/libavcodec/vp56.c
@@ -401,6 +401,8 @@ static void vp56_decode_mb(VP56Context *s, int row, int col, int is_alpha)
frame_current = s->framep[VP56_FRAME_CURRENT];
frame_ref = s->framep[ref_frame];
+ if (mb_type != VP56_MB_INTRA && !frame_ref->data[0])
+ return;
ab = 6*is_alpha;
b_max = 6 - 2*is_alpha;