diff -r 567bb019e3e3 -r 7e817e7e631c gst_plugins_base/gst-libs/gst/audio/gstaudiofilter.c
--- a/gst_plugins_base/gst-libs/gst/audio/gstaudiofilter.c	Tue Aug 31 15:30:33 2010 +0300
+++ b/gst_plugins_base/gst-libs/gst/audio/gstaudiofilter.c	Wed Sep 01 12:16:41 2010 +0100
@@ -32,14 +32,13 @@
  * their base_init function to easily configure the set of caps/formats that
  * the element is able to handle.
  *
- * Derived classes should override the #GstAudioFilterClass.setup() and
- * #GstBaseTransformClass.transform_ip() and/or
- * #GstBaseTransformClass.transform()
+ * Derived classes should override the GstAudioFilter::setup() and
+ * GstBaseTransform::transform_ip() and/or GstBaseTransform::transform()
  * virtual functions in their class_init function.
  *
- * Last reviewed on 2007-02-03 (0.10.11.1)
+ * Since: 0.10.12
  *
- * Since: 0.10.12
+ * Last reviewed on 2007-02-03 (0.10.11.1)
  */
 
 #ifdef HAVE_CONFIG_H
@@ -169,6 +168,8 @@
   GstAudioFilter *filter;
   gboolean ret = TRUE;
 
+  g_assert (gst_caps_is_equal (incaps, outcaps));
+
   filter = GST_AUDIO_FILTER (btrans);
 
   GST_LOG_OBJECT (filter, "caps: %" GST_PTR_FORMAT, incaps);
@@ -226,19 +227,16 @@
     const GstCaps * allowed_caps)
 {
   GstElementClass *element_class = GST_ELEMENT_CLASS (klass);
-  GstPadTemplate *pad_template;
 
   g_return_if_fail (GST_IS_AUDIO_FILTER_CLASS (klass));
   g_return_if_fail (allowed_caps != NULL);
   g_return_if_fail (GST_IS_CAPS (allowed_caps));
 
-  pad_template = gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
-      gst_caps_copy (allowed_caps));
-  gst_element_class_add_pad_template (element_class, pad_template);
-  gst_object_unref (pad_template);
+  gst_element_class_add_pad_template (element_class,
+      gst_pad_template_new ("src", GST_PAD_SRC, GST_PAD_ALWAYS,
+          gst_caps_copy (allowed_caps)));
 
-  pad_template = gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
-      gst_caps_copy (allowed_caps));
-  gst_element_class_add_pad_template (element_class, pad_template);
-  gst_object_unref (pad_template);
+  gst_element_class_add_pad_template (element_class,
+      gst_pad_template_new ("sink", GST_PAD_SINK, GST_PAD_ALWAYS,
+          gst_caps_copy (allowed_caps)));
 }