+ ComboOption<ARDOUR::SyncSource>* _sync_source;
+ BoolOption* _sync_framerate;
+ BoolOption* _sync_genlock;
+ BoolOption* _sync_source_2997;
+ ComboStringOption* _ltc_port;
+ HSliderOption* _ltc_volume_slider;
+ Gtk::Adjustment* _ltc_volume_adjustment;
+ BoolOption* _ltc_send_continuously;
+
+ PBD::ScopedConnection parameter_change_connection;