From d47bd6d7bcb028453810b6dd68137ae6050ce64c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <slomo@circular-chaos.org>
Date: Wed, 21 May 2008 07:28:04 +0000
Subject: [PATCH] gst/audioconvert/gstchannelmix.c: Prevent division by zero if
 the channel mix matrix contains only zeroes.

Original commit message from CVS:
* gst/audioconvert/gstchannelmix.c:
(gst_channel_mix_fill_normalize):
Prevent division by zero if the channel mix matrix contains only
zeroes.
---
 ChangeLog                        | 7 +++++++
 gst/audioconvert/gstchannelmix.c | 3 +++
 2 files changed, 10 insertions(+)

diff --git a/ChangeLog b/ChangeLog
index 269412db87..48b9aaa4b4 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,10 @@
+2008-05-21  Sebastian Dröge  <slomo@circular-chaos.org>
+
+	* gst/audioconvert/gstchannelmix.c:
+	(gst_channel_mix_fill_normalize):
+	Prevent division by zero if the channel mix matrix contains only
+	zeroes.
+
 2008-05-21  Sebastian Dröge  <slomo@circular-chaos.org>
 
 	Patch by: Antoine Tremblay <hexa00 at gmail dot com>
diff --git a/gst/audioconvert/gstchannelmix.c b/gst/audioconvert/gstchannelmix.c
index 98648db869..063c496dad 100644
--- a/gst/audioconvert/gstchannelmix.c
+++ b/gst/audioconvert/gstchannelmix.c
@@ -449,6 +449,9 @@ gst_channel_mix_fill_normalize (AudioConvertCtx * this)
   }
 
   /* normalize to this */
+  if (top == 0.0)
+    return;
+
   for (j = 0; j < this->out.channels; j++) {
     for (i = 0; i < this->in.channels; i++) {
       this->matrix[i][j] /= top;