implement 'gst_element_factory_find_from_element' to replace gst_element_get_factory

Original commit message from CVS:
implement 'gst_element_factory_find_from_element' to replace gst_element_get_factory

diff --git a/gst/gstelement.h b/gst/gstelement.h
index 83fc301..efd2e57 100644 (file)
--- a/gst/gstelement.h
+++ b/gst/gstelement.h
@@ -359,8 +359,6 @@ void                        gst_element_wait_state_change   (GstElement *element);
        
 const gchar*           gst_element_state_get_name      (GstElementState state);
 
-GstElementFactory*     gst_element_get_factory         (GstElement *element);
-
 GstBin*                        gst_element_get_managing_bin    (GstElement *element);
 
 
@@ -404,7 +402,8 @@ gboolean            gst_element_register                    (GstPlugin *plugin,
                                                                 guint rank,
                                                                 GType type);
 
-GstElementFactory*     gst_element_factory_find                (const gchar *name);
+GstElementFactory *    gst_element_factory_find                (const gchar *name);
+GstElementFactory *    gst_element_factory_find_from_element   (GstElement *element);
 GType                  gst_element_factory_get_element_type    (GstElementFactory *factory);
 G_CONST_RETURN gchar * gst_element_factory_get_longname        (GstElementFactory *factory);
 G_CONST_RETURN gchar * gst_element_factory_get_klass           (GstElementFactory *factory);

diff --git a/gst/gstelementfactory.c b/gst/gstelementfactory.c
index d3ba21f..8d65c05 100644 (file)
--- a/gst/gstelementfactory.c
+++ b/gst/gstelementfactory.c
@@ -108,6 +108,43 @@ gst_element_factory_find (const gchar *name)
   GST_DEBUG ("no such elementfactory \"%s\"", name);
   return NULL;
 }
+typedef struct {
+  GType type;
+} MyGTypeData;
+static gboolean
+find_type_filter (GstPluginFeature *feature, gpointer data)
+{
+  GstElementFactory *factory;
+  
+  if (!GST_IS_ELEMENT_FACTORY (feature))
+    return FALSE;
+
+  factory = GST_ELEMENT_FACTORY (feature);
+
+  return factory->type == ((MyGTypeData *) data)->type;
+}
+GstElementFactory *
+gst_element_factory_find_from_element (GstElement *element)
+{
+  GstElementFactory *factory;
+  GList *list;
+  MyGTypeData data;
+  
+  g_return_val_if_fail(GST_IS_ELEMENT (element), NULL);
+  
+  data.type = G_OBJECT_TYPE (element);
+  
+  list = gst_registry_pool_feature_filter (find_type_filter, TRUE, &data);
+
+  if (!list)
+    return NULL;
+  
+  g_assert (g_list_next (list) == NULL);
+  factory = GST_ELEMENT_FACTORY (list->data);
+  g_list_free (list);
+
+  return factory;
+}
 void
 __gst_element_details_clear (GstElementDetails *dp)
 {