SpeechDispatcherConnection.java

/**
 * Copyright (c) 2010-2016 by the respective copyright holders.
 *
 * All rights reserved. This program and the accompanying materials
 * are made available under the terms of the Eclipse Public License v1.0
 * which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/epl-v10.html
 */
package org.openhab.io.multimedia.internal.tts;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import speechd.ssip.SSIPClient;
import speechd.ssip.SSIPException;
import speechd.ssip.SSIPPriority;

/**
 * This class open a TCP/IP connection to the Speech Dispatcher service and can
 * send messages to be announced
 *
 * @author Gaël L'hopital
 * @since 1.6.0
 */

public class SpeechDispatcherConnection {

    private static Logger logger = LoggerFactory.getLogger(SpeechDispatcherConnection.class);

    public String port;
    public String host;

    private static SSIPClient speechDispatcherClient = null;

    public SpeechDispatcherConnection() {
    }

    public void openConnection() {
        closeConnection();
        try {
            speechDispatcherClient = new SSIPClient("openhab", null, null, host, port);
        } catch (SSIPException e) {
            logger.error("Error connecting to SpeechDispatcher Host {}: {}", host, e.getLocalizedMessage());
        }
    }

    public void closeConnection() {
        if (speechDispatcherClient != null) {
            try {
                speechDispatcherClient.close();
                speechDispatcherClient = null;
            } catch (SSIPException e) {
                logger.error("Error closing connection to SpeechDispatcher Host {}: {}", host, e.getLocalizedMessage());
            }
        }
    }

    /**
     * Speaks the text with a given voice
     *
     * @param text
     *            the text to speak
     * @param voice
     *            the name of the voice to use or null, if the default voice
     *            should be used
     */
    public void say(String text, String voiceName) {
        if (text == null) {
            return;
        }

        openConnection();
        try {
            if (voiceName != null) {
                speechDispatcherClient.setVoice(voiceName);
            }
            speechDispatcherClient.say(SSIPPriority.MESSAGE, text);
        } catch (SSIPException e) {
            logger.error("Error sending text to SpeechDispatcher Host {}: {}", host, e.getLocalizedMessage());
        }
        closeConnection();

    }

    @Override
    public String toString() {
        return "Device [host=" + host + ", port=" + port + "]";
    }

}