interface vc {
	void notify_cb(int pid, bundle msg) delegate;
	void feedback_cb(int utt_id, int event, array<char> pcm_data, int len) delegate;

	void register_notify_cb(int pid, notify_cb callback) async;
	int register_notify_cb_sync(int pid, notify_cb callback);
	void register_feedback_cb(int pid, feedback_cb callback) async;
	int register_feedback_cb_sync(int pid, feedback_cb callback);

	int initialize(in int pid, out int mgr_pid, out int service_state, out int daemon_pid);
	int finalize(in int pid);
	int set_command(in int pid, in int cmd_type);
	int unset_command(in int pid, in int cmd_type);
	int set_foreground(in int pid, in bool value);
	int set_server_dialog(in int pid, in string app_id, in string credential);
	int request_dialog(in int pid, in string disp_text, in string utt_text, in bool continuous);
	int is_system_command_valid(in int pid, out bool is_sys_cmd_valid);
	
	int auth_enable(in int pid, in int mgr_pid);
	int auth_disable(in int pid, in int mgr_pid);
	int auth_start(in int pid, in int mgr_pid);
	int auth_stop(in int pid, in int mgr_pid);
	int auth_cancel(in int pid, in int mgr_pid);

	int request_tts(in int pid, string text, string lang, bool to_vcm, out int utt_id);
	int cancel_tts(in int pid, in int utt_id);
	int get_tts_audio_format(in int pid, out int rate, out int channel, out int audio_type);
}