From c9da676de43d778d62efb1cfa75544d770736d67 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Reimar=20D=C3=B6ffinger?= <Reimar.Doeffinger@gmx.de>
Date: Wed, 30 Sep 2009 09:46:48 +0000
Subject: [PATCH] Disable parsing for ogg streams where no ogg header was
 found, if no header was found the parser was not initialized and thus will
 crash when trying to use it.

Originally committed as revision 20093 to svn://svn.ffmpeg.org/ffmpeg/trunk
---
 libavformat/oggdec.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavformat/oggdec.c b/libavformat/oggdec.c
index 5d42db765c..adf0ad051c 100644
--- a/libavformat/oggdec.c
+++ b/libavformat/oggdec.c
@@ -477,12 +477,17 @@ static int
 ogg_read_header (AVFormatContext * s, AVFormatParameters * ap)
 {
     struct ogg *ogg = s->priv_data;
+    int i;
     ogg->curidx = -1;
     //linear headers seek from start
     if (ogg_get_headers (s) < 0){
         return -1;
     }
 
+    for (i = 0; i < ogg->nstreams; i++)
+        if (ogg->streams[i].header < 0)
+            ogg->streams[i].codec = NULL;
+
     //linear granulepos seek from end
     ogg_get_length (s);