diff -r 4b0c6ed43234 -r 8e837d1bf446 gst_plugins_base/gst-libs/gst/interfaces/mixer.c
--- a/gst_plugins_base/gst-libs/gst/interfaces/mixer.c	Wed Mar 24 17:58:42 2010 -0500
+++ b/gst_plugins_base/gst-libs/gst/interfaces/mixer.c	Wed Mar 24 18:04:17 2010 -0500
@@ -143,6 +143,8 @@
  * it is allowed to only provide input elements in this list.
  *
  * Returns: A #GList consisting of zero or more #GstMixerTracks.
+ *          The list is owned by the #GstMixer instance and must not be freed
+ *          or modified.
  */
 #ifdef __SYMBIAN32__
 EXPORT_C
@@ -354,6 +356,28 @@
 }
 
 /**
+ * gst_mixer_get_mixer_type:
+ * @mixer: The #GstMixer implementation
+ *
+ * Get the #GstMixerType of this mixer implementation.
+ *
+ * Returns: A the #GstMixerType.
+ *
+ * Since: 0.10.24
+ */
+#ifdef __SYMBIAN32__
+EXPORT_C
+#endif
+
+GstMixerType
+gst_mixer_get_mixer_type (GstMixer * mixer)
+{
+  GstMixerClass *klass = GST_MIXER_GET_CLASS (mixer);
+
+  return klass->mixer_type;
+}
+
+/**
  * gst_mixer_get_mixer_flags:
  * @mixer: The #GstMixer implementation
  *
@@ -655,7 +679,7 @@
  * message and return the GstMixerMessageType identifying which
  * type of notification it is.
  *
- * Returns: The type of the GstMixerMessage, or GST_MIXER_MESSAGE_NONE
+ * Returns: The type of the GstMixerMessage, or GST_MIXER_MESSAGE_INVALID
  * if the message is not a GstMixer notification.
  *
  * Since: 0.10.14