interface vc_widget {
	void notify_cb(bundle msg) delegate;
	void register_cb(int pid, notify_cb notify_callback) async;

	int initialize(in int pid, out int service_state, out int daemon_pid);
	int finalize(in int pid);
	int start_recording(in int pid, in int command);
	int start(in int pid, in int silence);
	int stop(in int pid);
	int cancel(in int pid);
	int enable_asr_result(in int pid, in int enable);

	void set_foreground(in int pid, in int value) async;
}