From 20431a9982b9bd2c475042d919890a941ad70c71 Mon Sep 17 00:00:00 2001
From: Michael Niedermayer <michaelni@gmx.at>
Date: Wed, 16 Nov 2011 03:31:25 +0100
Subject: [PATCH] wma: Check channel number before init. Fixes Ticket240

Based on patch by ami_stuff
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
---
 libavcodec/wmadec.c | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/libavcodec/wmadec.c b/libavcodec/wmadec.c
index bf6e7ee71e..40315d4291 100644
--- a/libavcodec/wmadec.c
+++ b/libavcodec/wmadec.c
@@ -109,6 +109,11 @@ static int wma_decode_init(AVCodecContext * avctx)
         }
     }
 
+    if(avctx->channels > MAX_CHANNELS){
+        av_log(avctx, AV_LOG_ERROR, "Invalid number of channels (%d)\n", avctx->channels);
+        return -1;
+    }
+
     if(ff_wma_init(avctx, flags2)<0)
         return -1;