virtual int use_pending_capture_data (XMLNode& node) = 0;
virtual void get_input_sources () = 0;
virtual void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record) = 0;
virtual void set_align_style_from_io() {}
virtual int use_pending_capture_data (XMLNode& node) = 0;
virtual void get_input_sources () = 0;
virtual void check_record_status (nframes_t transport_frame, nframes_t nframes, bool can_record) = 0;
virtual void set_align_style_from_io() {}