typedef struct mlt_event_struct *mlt_event;
typedef struct mlt_service_s *mlt_service;
typedef struct mlt_producer_s *mlt_producer;
-typedef struct mlt_manager_s *mlt_manager;
typedef struct mlt_playlist_s *mlt_playlist;
typedef struct mlt_multitrack_s *mlt_multitrack;
typedef struct mlt_filter_s *mlt_filter;