TTSServiceFreeTTS.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 java.util.HashMap;
import java.util.Map;

import org.openhab.io.multimedia.tts.TTSService;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

import com.sun.speech.freetts.Voice;
import com.sun.speech.freetts.en.us.cmu_time_awb.AlanVoiceDirectory;
import com.sun.speech.freetts.en.us.cmu_us_kal.KevinVoiceDirectory;

/**
 * This is a pure Java TTS service implementation, based on FreeTTS.
 *
 * @author Kai Kreuzer
 * @since 0.8.0
 *
 */
public class TTSServiceFreeTTS implements TTSService {

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

    private static final Map<String, Voice> voices = new HashMap<String, Voice>();

    public void activate() {
        for (Voice voice : new KevinVoiceDirectory().getVoices()) {
            voices.put(voice.getName(), voice);
        }
        for (Voice voice : new AlanVoiceDirectory().getVoices()) {
            voices.put(voice.getName(), voice);
        }

        // workaround for JVM bug, see
        // http://ondra.zizka.cz/stranky/programovani/java/misc/freetts-line-unavailable-classcastexception-kevinvoicedirectory-error-opening-zipfile.texy
        System.setProperty("com.sun.speech.freetts.audio.AudioPlayer.openFailDelayMs", "100");
        System.setProperty("com.sun.speech.freetts.audio.AudioPlayer.totalOpenFailDelayMs", "30000");

    }

    public void deactivate() {
        for (Voice voice : voices.values()) {
            voice.deallocate();
        }
        voices.clear();
    }

    /**
     * {@inheritDoc}
     */
    @Override
    public void say(String text, String voiceName, String outputDevice) {

        if (text == null) {
            return;
        }

        if (voiceName == null) {
            voiceName = "kevin16";
        }

        Voice voice = voices.get(voiceName);

        if (voice != null) {
            if (!voice.isLoaded()) {
                voice.allocate();
            }
            voice.speak(text);
        } else {
            logger.error("Could not find voice: " + voiceName);
            StringBuilder sb = new StringBuilder();
            if (logger.isInfoEnabled()) {
                for (String name : voices.keySet()) {
                    sb.append(name + " ");
                }
                logger.info("Available voices are: [ {}]", sb.toString());
            }
        }
    }

}