/* * DecodingAudioPlayer.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;/** <titleabbrev>DecodingAudioPlayer</titleabbrev> <title>Playing an encoded audio file</title> <formalpara><title>Purpose</title> <para>Plays an encoded audio file.</para> </formalpara> <formalpara><title>Usage</title> <para> <cmdsynopsis><command>java DecodingAudioPlayer</command> <arg choice="plain"><replaceable class="parameter">encodedfile</replaceable></arg> </cmdsynopsis> </para> </formalpara> <formalpara><title>Parameters</title> <variablelist> <varlistentry> <term><replaceable class="parameter">encodedfile</replaceable></term> <listitem><para>the name of the encoded audio file to play</para></listitem> </varlistentry> </variablelist> </formalpara> <formalpara><title>Bugs, limitations</title> <para>Compressed formats can be handled depending on the capabilities of the Java Sound implementation it is run with. A-law and μ-law can be handled in any known Java Sound implementation. Ogg vorbis, mp3 and GSM 06.10 can be handled by <ulink url="http://www.tritonus.org/">Tritonus</ulink>. If you want to play these formats with the Sun jdk1.3/1.4, you have to install the respective plug-ins from <ulink url="http://www.tritonus.org/plugins.html">Tritonus Plug-ins</ulink>. Depending on the Java Sound implementation, this program may or may not play unencoded files. For a safe way to handle encoded as well as unencoded files, see <olink targetdocent="AudioPlayer">AudioPlayer</olink>.</para> </formalpara> <formalpara><title>Source code</title> <para> <ulink url="DecodingAudioPlayer.java.html">DecodingAudioPlayer.java</ulink> </para> </formalpara>*/public class DecodingAudioPlayer{ private static final int EXTERNAL_BUFFER_SIZE = 128000; public static void main(String[] args) { if (args.length != 1) { printUsageAndExit(); } String strFilename = args[0]; File file = new 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(audioFormat);//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); } } // line.close(); } public static void printUsageAndExit() { out("DecodingAudioPlayer: usage:"); out("\tjava DecodingAudioPlayer <soundfile>"); System.exit(1); } private static void out(String strMessage) { System.out.println(strMessage); }}/*** DecodingAudioPlayer.java ***/