vlc_event_manager_init( em, p_sd, (vlc_object_t *)p_sd );
vlc_event_manager_register_event_type(em, vlc_ServicesDiscoveryItemAdded);
vlc_event_manager_register_event_type(em, vlc_ServicesDiscoveryItemRemoved);
vlc_event_manager_init( em, p_sd, (vlc_object_t *)p_sd );
vlc_event_manager_register_event_type(em, vlc_ServicesDiscoveryItemAdded);
vlc_event_manager_register_event_type(em, vlc_ServicesDiscoveryItemRemoved);