diff --git a/ChangeLog b/ChangeLog
index 22ffc93928..28a4cf7277 100644
--- a/ChangeLog
+++ b/ChangeLog
@@ -1,3 +1,11 @@
+2007-07-25  Wim Taymans  <wim.taymans@gmail.com>
+
+	* gst/gstelementfactory.c: (gst_element_factory_has_interface):
+	* gst/gstelementfactory.h:
+	API: gst_element_factory_has_interface()
+	Added method to check if an element factory implements a named
+	interface.
+
 2007-07-25  Stefan Kost  <ensonic@users.sf.net>
 
 	* configure.ac:
diff --git a/gst/gstelementfactory.c b/gst/gstelementfactory.c
index bbc9bc1cc5..bf0025d992 100644
--- a/gst/gstelementfactory.c
+++ b/gst/gstelementfactory.c
@@ -649,3 +649,31 @@ gst_element_factory_get_uri_protocols (GstElementFactory * factory)
 
   return factory->uri_protocols;
 }
+
+/**
+ * gst_element_factory_has_interface:
+ * @factory: a #GstElementFactory
+ * @interfacename: an interface name
+ *
+ * Check if @factory implements the interface with name @interfacename.
+ *
+ * Returns: #TRUE when @factory implement the interface.
+ *
+ * Since: 0.10.14
+ */
+gboolean
+gst_element_factory_has_interface (GstElementFactory * factory,
+    const gchar * interfacename)
+{
+  GList *walk;
+
+  g_return_val_if_fail (GST_IS_ELEMENT_FACTORY (factory), FALSE);
+
+  for (walk = factory->interfaces; walk; walk = g_list_next (walk)) {
+    gchar *iname = (gchar *) walk->data;
+
+    if (!strcmp (iname, interfacename))
+      return TRUE;
+  }
+  return FALSE;
+}
diff --git a/gst/gstelementfactory.h b/gst/gstelementfactory.h
index 9783b4ac3b..ddd5cf9b5c 100644
--- a/gst/gstelementfactory.h
+++ b/gst/gstelementfactory.h
@@ -146,6 +146,8 @@ guint			gst_element_factory_get_num_pad_templates (GstElementFactory *factory);
 G_CONST_RETURN GList *	gst_element_factory_get_static_pad_templates (GstElementFactory *factory);
 gint			gst_element_factory_get_uri_type	(GstElementFactory *factory);
 gchar **		gst_element_factory_get_uri_protocols	(GstElementFactory *factory);
+gboolean 		gst_element_factory_has_interface	(GstElementFactory *factory,
+                                                                 const gchar *interfacename);
 
 GstElement*		gst_element_factory_create		(GstElementFactory *factory,
 								 const gchar *name);