playermodelimpl.java

使用Exlipse编写的一个语音程序

/*******************************************************************************
 * Copyright (c) 2004 Berthold Daum. All rights reserved. This program and the
 * accompanying materials are made available under the terms of the Common
 * Public License v1.0 which accompanies this distribution, and is available at
 * http://www.eclipse.org/legal/cpl-v10.html
 * 
 * Contributors: Berthold Daum
 ******************************************************************************/

package com.bdaum.dukeSpeake;

import com.sun.speech.freetts.Voice;

/**
 * @author Berthold Daum
 *
 * created: 13.08.2002 
 */
public class PlayerModelImpl implements PlayerModel {

	// the Voice instance used in this model
	private Voice voice;
	// Semaphore for inhibiting double playing
	private boolean playing = false;

	/**
	 * Method PlayerModelImpl.
	 * @param voice a FreeTTS voice object.
	 */
	public PlayerModelImpl(Voice voice) {
		this.voice = voice;
	}

	/**
	 * @see PlayerModel#play(String)
	 */
	public void play(final String text) {
		// do nothing if player runs already.
		if (playing)
			return;
		// Set semaphore to true
		playing = true;
		// The speech process runs in a separate thread 
		// that is managed by the SwingWorker instance worker 
		final SwingWorker worker = new SwingWorker() {
			public Object construct() {
				// This is where we speak
				voice.speak(text);
				return null;
			}
		};
		worker.start();
		// Reset semaphore
		playing = false;
	}

	/**
	 * @see PlayerModel#getVolume()
	 */
	public float getVolume() {
		// Get volume from Voice instance
		// and convert to scale range 0-10
		float adjustedVolume = voice.getVolume();
		return (adjustedVolume < 0.5)
			? 0f
			: (float) ((adjustedVolume - 0.5) * 20);
	}

	/**
	 * @see PlayerModel#setVolume(float)
	 */
	public void setVolume(float volume) {
		// Set volume in Voice instance
		// convert from scale range 0-10 to Voice range 0.5-1.0
		float adjustedVolume = (float) (volume / 20 + 0.5);
		voice.setVolume(adjustedVolume);
	}

	/**
	 * @see PlayerModel#getSpeakingRate()
	 */
	public float getSpeakingRate() {
		// Get speaking rate from Voice instance
		return voice.getRate();
	}

	/**
	 * @see PlayerModel#setSpeakingRate(float)
	 */
	public void setSpeakingRate(float wordsPerMin) {
		// Set speaking rate in Voice instance
		voice.setRate(wordsPerMin);
	}

	/**
	 * @see PlayerModel#getPitch()
	 */
	public float getPitch() {
		// Get pitch from Voice instance
		return voice.getPitch();
	}

	/**
	 * @see PlayerModel#setPitch(float)
	 */
	public void setPitch(float pitch) {
		// Set pitch in Voice instance
		voice.setPitch(pitch);
	}

	/**
	 * @see PlayerModel#getRange()
	 */
	public float getRange() {
		// Get variation from Voice instance
		return voice.getPitchRange();
	}

	/**
	 * @see PlayerModel#setRange(float)
	 */
	public void setRange(float range) {
		// Set variation in Voice instance
		voice.setPitchRange(range);
	}

}