/** Public final methods
*/
+#define MLT_FILTER_SERVICE( filter ) ( &( filter )->parent )
+#define MLT_FILTER_PROPERTIES( filter ) MLT_SERVICE_PROPERTIES( MLT_FILTER_SERVICE( filter ) )
+
extern int mlt_filter_init( mlt_filter self, void *child );
extern mlt_filter mlt_filter_new( );
extern mlt_service mlt_filter_service( mlt_filter self );