/* * DecodingAudioPlayerGUI.java * * Created on May 29, 2005, 2:58 PM */package juke.mp3;/* * DecodingAudioPlayerGUI.java * * This file is part of jsresources.org *//* * Copyright (c) 1999, 2000 by Matthias Pfisterer * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * - Redistributions of source code must retain the above copyright notice, * this list of conditions and the following disclaimer. * - Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS * FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE * COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR * SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED * OF THE POSSIBILITY OF SUCH DAMAGE. *//*|<--- this code is formatted to fit into 80 columns --->|*/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.LineUnavailableException;import javax.sound.sampled.SourceDataLine;import javax.sound.sampled.DataLine;import javax.swing.*;import java.awt.*;import java.awt.event.*;import java.io.*;import javax.sound.sampled.*;public class DecodingAudioPlayerGUI extends JFrame{ private static final int EXTERNAL_BUFFER_SIZE = 128000; private JButton openBtn, stopBtn, playBtn; private Container container; private BorderLayout layout; private FlowLayout layout2; private String strFilename; private SourceDataLine liner;public DecodingAudioPlayerGUI() { super("GUI for Decoding Audio...we shall see..."); container = getContentPane(); layout = new BorderLayout(); //layout2 = new FlowLayout(); //try setTitle("Capture/Playback Demo"); //in place of super openBtn = new JButton("Open"); stopBtn = new JButton("Stop"); playBtn = new JButton("Playback"); openBtn.setEnabled(true); stopBtn.setEnabled(true); playBtn.setEnabled(true); ButtonHandler handler = new ButtonHandler(); openBtn.addActionListener( handler ); stopBtn.addActionListener( handler ); playBtn.addActionListener( handler ); container.add(openBtn, BorderLayout.NORTH); container.add(playBtn, BorderLayout.CENTER); container.add(stopBtn, BorderLayout.PAGE_END); setSize(250,170); setVisible(true); setDefaultCloseOperation( EXIT_ON_CLOSE);}public static void main(String[] args) { DecodingAudioPlayerGUI dapGui = new DecodingAudioPlayerGUI(); } private String openFile() { /////////////////////////// JFileChooser fileChooser = new JFileChooser(); // fileChooser.setMultiSelectionEnabled(true); fileChooser.setFileSelectionMode( JFileChooser.FILES_ONLY); int result = fileChooser.showOpenDialog( this ); if(result == JFileChooser.APPROVE_OPTION) { JOptionPane.showMessageDialog( null, "You pressed selected OKAY, the name is: " + fileChooser.getSelectedFile().getName() ); //!?!? figure out how to return getFILES w/multipole files selected... } else if ( result == JFileChooser.CANCEL_OPTION) { //!???!fix this shit return; } /** File currentDir = new File("C:/j2sdk1.4.2_04/5netbeans/Juke/build/classes/");//new File(System.getProperty("user.dir")); try { currentDirURL = currentDir.toURL(); *////////// //changing here to reflect the stuff from MAIN //from the original DecodingAudioPlayer.java file String fileNamer = fileChooser.getSelectedFile().getAbsolutePath(); // String fileName2URl = fileNamer.toURL(); return strFilename = fileNamer;///////// } private class ButtonHandler implements ActionListener { // handle button event public void actionPerformed( ActionEvent event ) { if (event.getSource() == openBtn ) openFile(); else if ( event.getSource() == playBtn) playFile( strFilename ); else if ( event.getSource() == stopBtn) stopFile( liner ); } } private SourceDataLine playFile( String strFilename ){ File file = new File (strFilename); //File file = strFilename; byte[] abData = new byte[EXTERNAL_BUFFER_SIZE]; AudioInputStream audioInputStream = null; try { audioInputStream = AudioSystem.getAudioInputStream(file); } catch (Exception e) { e.printStackTrace(); } if (audioInputStream == null) { out("### cannot read input file: " + strFilename); } AudioFormat sourceFormat = audioInputStream.getFormat(); AudioFormat.Encoding targetEncoding = AudioFormat.Encoding.PCM_SIGNED; audioInputStream = AudioSystem.getAudioInputStream(targetEncoding, audioInputStream); AudioFormat audioFormat = audioInputStream.getFormat(); SourceDataLine line = null; DataLine.Info info = new DataLine.Info( SourceDataLine.class, audioFormat); System.out.println("sourceFormat: " + sourceFormat + "\n");// System.out.println("audioFormat: " + audioFormat + "\n");////javasojava added this shows that while "opening and mp3", // the actual AudioFormat being played back is PCM(at least on windows) try { line = (SourceDataLine) AudioSystem.getLine(info); line.open(audioFormat); } catch (LineUnavailableException e) { e.printStackTrace(); } catch (Exception e) { e.printStackTrace(); } line.start(); int nBytesRead = 0; while (nBytesRead != -1) { try { nBytesRead = audioInputStream.read(abData, 0, abData.length); } catch (IOException e) { e.printStackTrace(); } if (nBytesRead >= 0) { int nBytesWritten = line.write(abData, 0, nBytesRead); } } playBtn.setEnabled(false); // line.close(); //i put the !?!??!! following line here, believe it will //close resources..hoping? guessing?..!?!?! //the PLAY button stayed gray/program locked as before/commenting out //line.stop(); return liner = line;}private void stopFile( SourceDataLine liner ){ liner.stop();} private static void out(String strMessage) { System.out.println(strMessage); }}/*** DecodingAudioPlayerGUI.java ***/