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+/**
+ * Copyright (c) 2003 Sun Microsystems, Inc. All Rights Reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions are met:
+ *
+ * -Redistribution of source code must retain the above copyright notice,
+ * this list of conditions and the following disclaimer.
+ *
+ * -Redistribution 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.
+ *
+ * Neither the name of Sun Microsystems, Inc. or the names of contributors may
+ * be used to endorse or promote products derived from this software without
+ * specific prior written permission.
+ *
+ * This software is provided "AS IS," without a warranty of any kind.
+ * ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES, INCLUDING
+ * ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE OR
+ * NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN MICROSYSTEMS, INC. ("SUN") AND ITS
+ * LICENSORS SHALL NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A
+ * RESULT OF USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES.
+ * IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT
+ * OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR
+ * PUNITIVE DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
+ * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS
+ * BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
+ *
+ * You acknowledge that this software is not designed or intended for use in the
+ * design, construction, operation or maintenance of any nuclear facility.
+ *
+ */
+
+package demos.devmaster.lesson8;
+
+import java.io.File;
+import java.net.URL;
+import java.nio.ByteBuffer;
+import java.util.Arrays;
+import net.java.games.joal.AL;
+import net.java.games.joal.ALException;
+import net.java.games.joal.ALFactory;
+import net.java.games.joal.util.ALut;
+/**
+ *
+ * This is a translation of the OggVorbis streamer OpenAL tutorial
+ * at http://www.devmaster.net/articles/openal-tutorials/lesson8.php
+ *
+ * It uses the Java Ogg library from http://www.j-ogg.de to do the Ogg
+ * file decoding...
+ *
+ * @author Krishna K Gadepalli
+ */
+public class OggStreamer {
+
+ OggDecoder oggDecoder;
+
+ static AL al = null;
+ static int BUFFER_SIZE = 4096*4;
+
+ static {
+ // Initialize OpenAL and clear the error bit.
+ try {
+ ALut.alutInit();
+ al = ALFactory.getAL();
+ al.alGetError();
+ } catch (ALException e) {
+ System.err.println("Error initializing OpenAL");
+ e.printStackTrace();
+ }
+ }
+
+ // Buffers hold sound data.
+ private int[] buffers = new int[2];
+
+ // Sources are points emitting sound.
+ private int[] source = new int[1];
+
+ // Position, Velocity, Direction of the source sound.
+ private float[] sourcePos = { 0.0f, 0.0f, 0.0f };
+ private float[] sourceVel = { 0.0f, 0.0f, 0.0f };
+ private float[] sourceDir = { 0.0f, 0.0f, 0.0f };
+
+ private int format; // OpenAL data format
+ private int rate; // sample rate
+
+ /** Creates a new instance of OggStreamer */
+ public OggStreamer(URL url) {
+ this.oggDecoder = new OggDecoder(url);
+ }
+
+ public boolean open() {
+ if (!oggDecoder.initialize()) {
+ System.err.println("Error initializing ogg stream...");
+ return false;
+ }
+
+ // TODO: I am not if this is the right way to fix the endian
+ // problems I am having... but this seems to fix it on Linux
+ oggDecoder.setSwap(true);
+
+ switch (oggDecoder.numChannels()) {
+ case 1: format = AL.AL_FORMAT_MONO16; break;
+ case 2: format = AL.AL_FORMAT_STEREO16; break;
+ default:
+ System.err.println("Incorrect number of channels..");
+ return false;
+ }
+
+ rate = oggDecoder.sampleRate();
+
+ al.alGenBuffers(2, buffers, 0); check();
+ al.alGenSources(1, source, 0); check();
+
+ System.err.println("format = 0x" + Integer.toString(format, 16));
+ // System.err.println("buffers = " + Arrays.toString(buffers));
+ // System.err.println("source = " + Arrays.toString(source ));
+
+ al.alSourcefv(source[0], AL.AL_POSITION , sourcePos, 0);
+ al.alSourcefv(source[0], AL.AL_VELOCITY , sourceVel, 0);
+ al.alSourcefv(source[0], AL.AL_DIRECTION, sourceDir, 0);
+
+ al.alSourcef(source[0], AL.AL_ROLLOFF_FACTOR, 0.0f );
+ al.alSourcei(source[0], AL.AL_SOURCE_RELATIVE, AL.AL_TRUE);
+
+ return true;
+ }
+
+ public void release() {
+ al.alSourceStop(source[0]);
+ empty();
+
+ al.alDeleteSources(1, source, 0); check();
+ al.alDeleteBuffers(2, buffers, 0); check();
+
+ // ov_clear(&oggStream);
+ }
+
+ public boolean playback() {
+ if (playing())
+ return true;
+
+ if (!stream(buffers[0]))
+ return false;
+
+ if(!stream(buffers[1]))
+ return false;
+
+ al.alSourceQueueBuffers(source[0], 2, buffers, 0);
+ al.alSourcePlay(source[0]);
+
+ return true;
+ }
+
+ public boolean playing() {
+ int[] state = new int[1];
+
+ al.alGetSourcei(source[0], AL.AL_SOURCE_STATE, state, 0);
+
+ return (state[0] == AL.AL_PLAYING);
+ }
+
+ public boolean update() {
+ int[] processed = new int[1];
+ boolean active = true;
+
+ al.alGetSourcei(source[0], AL.AL_BUFFERS_PROCESSED, processed, 0);
+
+ while (processed[0] > 0)
+ {
+ int[] buffer = new int[1];
+
+ al.alSourceUnqueueBuffers(source[0], 1, buffer, 0); check();
+
+ active = stream(buffer[0]);
+
+ al.alSourceQueueBuffers(source[0], 1, buffer, 0); check();
+
+ processed[0]--;
+ }
+
+ return active;
+ }
+
+ public boolean stream(int buffer) {
+ byte[] pcm = new byte[BUFFER_SIZE];
+ int size = 0;
+
+ try {
+ if ((size = oggDecoder.read(pcm)) <= 0)
+ return false;
+ } catch (Exception e) {
+ e.printStackTrace();
+ return false;
+ }
+
+ ByteBuffer data = ByteBuffer.wrap(pcm, 0, size);
+ al.alBufferData(buffer, format, data, size, rate);
+ check();
+
+ return true;
+ }
+
+ public void empty() {
+ }
+
+ private void check() {
+ if (al.alGetError() != AL.AL_NO_ERROR)
+ throw new ALException("OpenAL error raised...");
+ }
+
+ public boolean play() {
+ if (!open())
+ return false;
+
+ oggDecoder.dump();
+
+ if (!playback())
+ return false;
+
+ while (update()) {
+ if (playing()) continue;
+
+ if (!playback())
+ return false;
+ }
+
+ return true;
+ }
+
+ /**
+ * @param args the command line arguments
+ */
+ public static void main(String[] args) {
+ if (al == null)
+ return;
+
+ URL url;
+
+ try {
+ if (args.length == 0) {
+ url = OggStreamer.class.getClassLoader().getResource("demos/data/crickets.ogg");
+ (new OggStreamer(url)).play();
+ }
+
+ for (int i = 0; i < args.length; i++) {
+ System.err.println("Playing Ogg stream : " + args[i]);
+
+ url = ((new File(args[i])).exists()) ?
+ new URL("file:" + args[i]) : new URL(args[i]);
+
+ if ((new OggStreamer(url)).play()) continue;
+
+ System.err.println("ERROR!!");
+ }
+ } catch (Exception e) {
+ e.printStackTrace();
+ }
+ }
+
+}