From 7148da489e4991c88eeff9cd6238ad6e273613b5 Mon Sep 17 00:00:00 2001
From: "Ronald S. Bultje" <rsbultje@gmail.com>
Date: Thu, 30 Dec 2010 14:33:21 +0000
Subject: Fix valgrind invalid read on top MB rows with CODEC_FLAG_EMU_EDGE
 set.

Originally committed as revision 26168 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavcodec/vp8.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'libavcodec')

diff --git a/libavcodec/vp8.c b/libavcodec/vp8.c
index 50ecaf1889..80d30e8046 100644
--- a/libavcodec/vp8.c
+++ b/libavcodec/vp8.c
@@ -1104,7 +1104,8 @@ void intra_predict(VP8Context *s, uint8_t *dst[3], VP8Macroblock *mb,
 
         // if we're on the right edge of the frame, said edge is extended
         // from the top macroblock
-        if (mb_x == s->mb_width-1) {
+        if (!(!mb_y && avctx->flags & CODEC_FLAG_EMU_EDGE) &&
+            mb_x == s->mb_width-1) {
             tr = tr_right[-1]*0x01010101;
             tr_right = (uint8_t *)&tr;
         }
-- 
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