From 6e20554a6d33e92b81dc3cfed6082e03bff2a7f8 Mon Sep 17 00:00:00 2001
From: Laurent Aimar <fenrir@videolan.org>
Date: Sat, 8 Oct 2011 23:40:32 +0200
Subject: [PATCH] eamad: avoid NULL derefence when missing the reference frame.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
libavcodec/eamad.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/libavcodec/eamad.c b/libavcodec/eamad.c
index 60de7807507..a092d473b5e 100644
--- a/libavcodec/eamad.c
+++ b/libavcodec/eamad.c
@@ -205,7 +205,8 @@ static void decode_mb(MadContext *t, int inter)
for (j=0; j<6; j++) {
if (mv_map & (1<<j)) { // mv_x and mv_y are guarded by mv_map
int add = 2*decode_motion(&s->gb);
- comp_block(t, s->mb_x, s->mb_y, j, mv_x, mv_y, add);
+ if (t->last_frame.data[0])
+ comp_block(t, s->mb_x, s->mb_y, j, mv_x, mv_y, add);
} else {
s->dsp.clear_block(t->block);
decode_block_intra(t, t->block);
--
GitLab