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Cogchar Sonograph - experimental/imported audio display code
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/*
 *  Copyright 2011 by The Cogchar Project (www.cogchar.org).
 *
 *  Licensed under the Apache License, Version 2.0 (the "License");
 *  you may not use this file except in compliance with the License.
 *  You may obtain a copy of the License at
 *
 *       http://www.apache.org/licenses/LICENSE-2.0
 *
 *  Unless required by applicable law or agreed to in writing, software
 *  distributed under the License is distributed on an "AS IS" BASIS,
 *  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 *  See the License for the specific language governing permissions and
 *  limitations under the License.
 */

package org.cogchar.audio.input;

import java.io.File;
import java.io.IOException;
import javax.sound.sampled.AudioFormat;
import javax.sound.sampled.AudioInputStream;
import javax.sound.sampled.AudioSystem;
import javax.sound.sampled.DataLine;
import javax.sound.sampled.SourceDataLine;

/**
 *
 * @author Matthew Stevenson 
 */
public class WavPlayer extends Thread {
    private final int myBufferLength = 524288;
    private String filename;

    public WavPlayer(String wavfile) {
        filename = wavfile;
    }

    @Override
    public void run() {

        File soundFile = new File(filename);
        if (!soundFile.exists()) {
            System.err.println("Wave file not found: " + filename);
            return;
        }

        AudioInputStream audioInputStream = null;
        try {
            audioInputStream = AudioSystem.getAudioInputStream(soundFile);
        } catch (Exception ex) {
            ex.printStackTrace();
            return;
        }

        AudioFormat format = audioInputStream.getFormat();
        format.getEncoding();
        SourceDataLine auline = null;
        DataLine.Info info = new DataLine.Info(SourceDataLine.class, format);

        try {
            auline = (SourceDataLine) AudioSystem.getLine(info);
            auline.open(format);
        } catch (Exception ex) {
            ex.printStackTrace();
            return;
        }

        auline.start();
        int nBytesRead = 0;
        byte[] abData = new byte[myBufferLength];

        try {
            while (nBytesRead != -1) {
                nBytesRead = audioInputStream.read(abData, 0, abData.length);
                if (nBytesRead >= 0)
                    auline.write(abData, 0, nBytesRead);
            }
        } catch (IOException e) {
            e.printStackTrace();
            return;
        } finally {
            auline.drain();
            auline.close();
        }

    }
}