extern int mlt_service_connect_producer( mlt_service self, mlt_service producer, int index );
extern int mlt_service_get_frame( mlt_service self, mlt_frame_ptr frame, int index );
extern mlt_properties mlt_service_properties( mlt_service self );
+extern mlt_service mlt_service_consumer( mlt_service self );
+extern mlt_service mlt_service_producer( mlt_service self );
extern void mlt_service_close( mlt_service self );
// I'm not sure about self one - leaving it out of docs for now (only used in consumer_westley)