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authorLaurent Aimar <fenrir@videolan.org>2011-09-21 20:46:30 +0200
committerJanne Grunau <janne-libav@jannau.net>2011-10-07 00:25:43 +0200
commit0ec6d6e9b682318b5b5b5457e09fbf3c4ca41335 (patch)
tree34012165339589f36cdd4def430cd695de761a3c
parentd239d4b447885cb7c5eee9ce359f34ad6b64f373 (diff)
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ffmpeg-streaming-0ec6d6e9b682318b5b5b5457e09fbf3c4ca41335.tar.gz
vp56: Check for missing reference frame data
Signed-off-by: Janne Grunau <janne-libav@jannau.net>
-rw-r--r--libavcodec/vp56.c2
1 files changed, 2 insertions, 0 deletions
diff --git a/libavcodec/vp56.c b/libavcodec/vp56.c
index 5c7e93e..530b890 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;
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