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+/* AudioPlayerSample.java -- Simple Java Audio Player
+ Copyright (C) 2007 Free Software Foundation, Inc.
+
+This file is part of GNU Classpath.
+
+GNU Classpath is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2, or (at your option)
+any later version.
+
+GNU Classpath is distributed in the hope that it will be useful, but
+WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GNU Classpath; see the file COPYING. If not, write to the
+Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+02110-1301 USA.
+
+Linking this library statically or dynamically with other modules is
+making a combined work based on this library. Thus, the terms and
+conditions of the GNU General Public License cover the whole
+combination.
+
+As a special exception, the copyright holders of this library give you
+permission to link this library with independent modules to produce an
+executable, regardless of the license terms of these independent
+modules, and to copy and distribute the resulting executable under
+terms of your choice, provided that you also meet, for each linked
+independent module, the terms and conditions of the license of that
+module. An independent module is a module which is not derived from
+or based on this library. If you modify this library, you may extend
+this exception to your version of the library, but you are not
+obligated to do so. If you do not wish to do so, delete this
+exception statement from your version. */
+package gnu.classpath.examples.sound;
+
+import java.io.File;
+import java.io.IOException;
+import java.util.Map;
+
+import javax.sound.sampled.AudioFormat;
+import javax.sound.sampled.AudioInputStream;
+import javax.sound.sampled.AudioSystem;
+import javax.sound.sampled.DataLine;
+import javax.sound.sampled.LineUnavailableException;
+import javax.sound.sampled.SourceDataLine;
+import javax.sound.sampled.UnsupportedAudioFileException;
+
+/**
+ * A simple demo to show the use of the Java Sound API.
+ * It plays the given file (up to the end, so don't pass the 26 minutes long
+ * Pink Floyd's Echoes unless you really want!!).
+ *
+ * See: http://jsresources.org/examples/SimpleAudioPlayer.java.html
+ *
+ * @author Mario Torre <neugens@limasoftware.net>
+ */
+public class AudioPlayerSample
+{
+ private static final int EXTERNAL_BUFFER_SIZE = 128000;
+
+ /**
+ * @param args
+ */
+ public static void main(String[] args)
+ {
+ if (args.length < 1)
+ {
+ System.out.println("Radio Classpath -: Usage: " +
+ "AudioPlayerSample [file]");
+ return;
+ }
+
+ String file = args[0];
+
+ System.out.println("Welcome to Radio Classpath, only great music for you!");
+ System.out.println("Today's DJ Tap The WaterDroplet");
+
+ // now create the AudioInputStream
+ AudioInputStream audioInputStream = null;
+ try
+ {
+ audioInputStream = AudioSystem.getAudioInputStream(new File(file));
+ }
+ catch (UnsupportedAudioFileException e)
+ {
+ // This happen when the subsystem is unable to parse the kind of
+ // audio file we are submitting
+ // See the README for supported audio file types under Classpath
+ // for the version you are using.
+ e.printStackTrace();
+ return;
+ }
+ catch (IOException e)
+ {
+ e.printStackTrace();
+ return;
+ }
+
+ // get informations about the kind of file we are about to play
+ AudioFormat audioFormat = audioInputStream.getFormat();
+
+ System.out.println("Playing file: " + file);
+ System.out.println("format: " + audioFormat.toString());
+
+ System.out.print("Additional properties: ");
+
+ // now, we try to get all the properties we have in this AudioFormat
+ // and display them
+ Map<String, Object> properties = audioFormat.properties();
+ if (properties.size() < 0)
+ {
+ System.out.println("none");
+ }
+ else
+ {
+ System.out.println("found #" + properties.size() + " properties");
+ for (String key : properties.keySet())
+ {
+ System.out.println(key + ": " + properties.get(key));
+ }
+ }
+
+ // let's setup things for playing
+ // first, we require a Line. As we are doing playing, we will ask for a
+ // SourceDataLine
+ SourceDataLine line = null;
+
+ // To get the source line, we first need to build an Info object
+ // this is done in one line:
+ DataLine.Info info = new DataLine.Info(SourceDataLine.class, audioFormat);
+
+ System.out.println("searching line...");
+
+ // usually, if a backend can parse a file type, it can also
+ // create a line to handle it, but that's not guaranteed
+ // so we need to take care and to handle a possible
+ // LineUnavailableException
+ try
+ {
+ line = (SourceDataLine) AudioSystem.getLine(info);
+
+ System.out.println("line found, opening...");
+
+ // once created, a line must be opened to let data flow
+ // though it.
+ line.open(audioFormat);
+ }
+ catch (LineUnavailableException e)
+ {
+ // in a real application you should signal that in a kindly way to
+ // your users
+ e.printStackTrace();
+ return;
+ }
+ catch (Exception e)
+ {
+ e.printStackTrace();
+ return;
+ }
+
+ // an open line pass data to the backend only when it is in
+ // a state called "started" ("playing" or "play" in some other
+ // framework)
+ System.out.print("starting line... ");
+
+ line.start();
+ System.out.println("done");
+
+ // now we can start reading data from the AudioStream and writing
+ // data to the pipeline. The Java Sound API is rather low level
+ // so let you pass up to one byte of data at a time
+ // (with some constraints, refer to the API documentation to know more)
+ // We will do some buffering. You may want to check the frame size
+ // to allow a better buffering, also.
+
+ System.out.println("now playing...");
+
+ int nBytesRead = 0;
+ byte[] abData = new byte[EXTERNAL_BUFFER_SIZE];
+ while (nBytesRead != - 1)
+ {
+ try
+ {
+ nBytesRead = audioInputStream.read(abData, 0, abData.length);
+ }
+ catch (IOException e)
+ {
+ e.printStackTrace();
+ }
+
+ if (nBytesRead >= 0)
+ {
+ // this method returns the number of bytes actuall written
+ // to the line. You may want to use this number to check
+ // for events, display the current position (give also a
+ // look to the API for other ways of doing that) etc..
+ line.write(abData, 0, nBytesRead);
+ }
+ }
+
+ System.out.print("stream finished, draining line... ");
+
+ // call this method to ensure that all the data in the internal buffer
+ // reach the audio backend, otherwise your application will
+ // cut the last frames of audio data (and users will not enjoy the last
+ // seconds of their precious music)
+ line.drain();
+
+ // Once done, we can close the line. Note that a line, once closed
+ // may not be reopened (depends on the backend, in some cases a "reopen",
+ // if allowed, really opens a new line, reallocating all the resources)
+
+ System.out.println("line drained, now exiting");
+ line.close();
+
+ System.out.println("We hope you enjoyed Radio Classpath!");
+ }
+
+}