track-element: Add an API to list all set ControlBinding

API:
    ges_track_element_get_all_control_bindings

docs/libs/ges-sections.txt

@@ -146,6 +146,7 @@ ges_track_element_get_child_property_by_pspec
 ges_track_element_edit
 ges_track_element_set_control_source
 ges_track_element_get_control_binding
+ges_track_element_get_all_control_bindings
 <SUBSECTION Standard>
 GESTrackElementPrivate
 ges_track_element_set_track

ges/ges-internal.h

@@ -120,9 +120,6 @@ ges_asset_cache_put (GESAsset * asset, GSimpleAsyncResult *res);
 G_GNUC_INTERNAL gboolean
 ges_asset_cache_set_loaded(GType extractable_type, const gchar * id, GError *error);
 
-G_GNUC_INTERNAL GHashTable *
-ges_track_element_get_bindings_hashtable(GESTrackElement *element);
-
 GESAsset*
 ges_asset_cache_lookup(GType extractable_type, const gchar * id);
 

ges/ges-track-element.c

@@ -912,8 +912,15 @@ ges_track_element_set_track (GESTrackElement * object, GESTrack * track)
   return ret;
 }
 
+/**
+ * ges_track_element_get_all_control_bindings
+ * @trackelement: The #TrackElement from which to get all set bindings
+ *
+ * Returns: (element-type gchar* GstControlBinding)(transfer none): A
+ * #GHashTable containing all property_name: GstControlBinding
+ */
 GHashTable *
-ges_track_element_get_bindings_hashtable (GESTrackElement * trackelement)
+ges_track_element_get_all_control_bindings (GESTrackElement * trackelement)
 {
   GESTrackElementPrivate *priv = GES_TRACK_ELEMENT (trackelement)->priv;
 

ges/ges-track-element.h

@@ -191,5 +191,7 @@ ges_track_element_add_children_props          (GESTrackElement *self,
                                                const gchar ** wanted_categories,
                                                const gchar **blacklist,
                                                const gchar **whitelist);
+GHashTable *
+ges_track_element_get_all_control_bindings (GESTrackElement * trackelement);
 G_END_DECLS
 #endif /* _GES_TRACK_ELEMENT */

ges/ges-xml-formatter.c

@@ -927,7 +927,8 @@ _save_keyframes (GString * str, GESTrackElement * trackelement, gint index)
   GHashTableIter iter;
   gpointer key, value;
 
-  bindings_hashtable = ges_track_element_get_bindings_hashtable (trackelement);
+  bindings_hashtable =
+      ges_track_element_get_all_control_bindings (trackelement);
 
   g_hash_table_iter_init (&iter, bindings_hashtable);