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annotate src/com/aurellem/capture/audio/AudioSendRenderer.java @ 30:be37291c62b8

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propagated AudioFormat to other classes.
author Robert McIntyre <rlm@mit.edu>
date Sun, 30 Oct 2011 10:11:21 -0700
parents 9f58273090df
children 13d354e1184b
rev   line source
rlm@11 1 package com.aurellem.capture.audio;
rlm@11 2
rlm@11 3 import java.lang.reflect.Field;
rlm@11 4 import java.nio.ByteBuffer;
rlm@11 5 import java.util.HashMap;
rlm@11 6 import java.util.Vector;
rlm@11 7 import java.util.concurrent.CountDownLatch;
rlm@11 8 import java.util.logging.Level;
rlm@11 9 import java.util.logging.Logger;
rlm@11 10
rlm@29 11 import javax.sound.sampled.AudioFormat;
rlm@29 12
rlm@11 13 import org.lwjgl.LWJGLException;
rlm@11 14 import org.lwjgl.openal.AL;
rlm@11 15 import org.lwjgl.openal.AL10;
rlm@11 16 import org.lwjgl.openal.ALCdevice;
rlm@11 17 import org.lwjgl.openal.OpenALException;
rlm@11 18
rlm@11 19 import com.aurellem.send.AudioSend;
rlm@11 20 import com.jme3.audio.Listener;
rlm@11 21 import com.jme3.audio.lwjgl.LwjglAudioRenderer;
rlm@11 22 import com.jme3.math.Vector3f;
rlm@11 23 import com.jme3.util.BufferUtils;
rlm@11 24
rlm@11 25 public class AudioSendRenderer
rlm@11 26
rlm@11 27 extends LwjglAudioRenderer implements MultiListener {
rlm@11 28
rlm@11 29 private AudioSend audioSend;
rlm@29 30 private static final AudioFormat outFormat = new AudioFormat(44100.0f, 32, 1, true, false);
rlm@11 31
rlm@11 32 /**
rlm@11 33 * Keeps track of all the listeners which have been registered so far.
rlm@11 34 * The first element is <code>null</code>, which represents the zeroth
rlm@11 35 * LWJGL listener which is created automatically.
rlm@11 36 */
rlm@11 37 public Vector<Listener> listeners = new Vector<Listener>();
rlm@11 38
rlm@11 39 public void initialize(){
rlm@11 40 super.initialize();
rlm@11 41 listeners.add(null);
rlm@11 42 }
rlm@11 43
rlm@11 44 /**
rlm@11 45 * This is to call the native methods which require the OpenAL device ID.
rlm@11 46 * currently it is obtained through reflection.
rlm@11 47 */
rlm@11 48 private long deviceID;
rlm@11 49
rlm@11 50 /**
rlm@11 51 * To ensure that <code>deviceID<code> and <code>listeners<code> are
rlm@11 52 * properly initialized before any additional listeners are added.
rlm@11 53 */
rlm@11 54 private CountDownLatch latch = new CountDownLatch(1);
rlm@11 55
rlm@11 56 /**
rlm@11 57 * Each listener (including the main LWJGL listener) can be registered
rlm@11 58 * with a <code>SoundProcessor</code>, which this Renderer will call whenever
rlm@11 59 * there is new audio data to be processed.
rlm@11 60 */
rlm@11 61 public HashMap<Listener, SoundProcessor> soundProcessorMap =
rlm@11 62 new HashMap<Listener, SoundProcessor>();
rlm@11 63
rlm@11 64
rlm@11 65 /**
rlm@11 66 * Create a new slave context on the recorder device which will render all the
rlm@11 67 * sounds in the main LWJGL context with respect to this listener.
rlm@11 68 */
rlm@11 69 public void addListener(Listener l) {
rlm@11 70 try {this.latch.await();}
rlm@11 71 catch (InterruptedException e) {e.printStackTrace();}
rlm@11 72 audioSend.addListener();
rlm@11 73 this.listeners.add(l);
rlm@11 74 }
rlm@11 75
rlm@11 76 /**
rlm@11 77 * Whenever new data is rendered in the perspective of this listener,
rlm@11 78 * this Renderer will send that data to the SoundProcessor of your choosing.
rlm@11 79 */
rlm@11 80 public void registerSoundProcessor(Listener l, SoundProcessor sp) {
rlm@11 81 this.soundProcessorMap.put(l, sp);
rlm@11 82 }
rlm@11 83
rlm@11 84 /**
rlm@11 85 * Registers a SoundProcessor for the main LWJGL context. IF all you want to
rlm@11 86 * do is record the sound you would normally hear in your application, then
rlm@11 87 * this is the only method you have to worry about.
rlm@11 88 */
rlm@11 89 public void registerSoundProcessor(SoundProcessor sp){
rlm@11 90 // register a sound processor for the default listener.
rlm@11 91 this.soundProcessorMap.put(null, sp);
rlm@11 92 }
rlm@11 93
rlm@11 94 private static final Logger logger =
rlm@11 95 Logger.getLogger(AudioSendRenderer.class.getName());
rlm@11 96
rlm@11 97
rlm@11 98
rlm@11 99 /**
rlm@11 100 * Instead of taking whatever device is available on the system, this call
rlm@11 101 * creates the "Multiple Audio Send" device, which supports multiple listeners in a limited
rlm@11 102 * capacity. For each listener, the device renders it not to the sound device, but
rlm@11 103 * instead to buffers which it makes available via JNI.
rlm@11 104 */
rlm@11 105 public void initInThread(){
rlm@11 106 try{
rlm@11 107 if (!AL.isCreated()){
rlm@29 108 AL.create("Multiple Audio Send", (int) outFormat.getSampleRate(), 60, false);
rlm@11 109 }
rlm@11 110 }catch (OpenALException ex){
rlm@11 111 logger.log(Level.SEVERE, "Failed to load audio library", ex);
rlm@11 112 System.exit(1);
rlm@11 113 return;
rlm@11 114 }catch (LWJGLException ex){
rlm@11 115 logger.log(Level.SEVERE, "Failed to load audio library", ex);
rlm@11 116 System.exit(1);
rlm@11 117 return;
rlm@11 118 }
rlm@11 119 super.initInThread();
rlm@11 120
rlm@11 121 ALCdevice device = AL.getDevice();
rlm@11 122
rlm@11 123 // RLM: use reflection to grab the ID of our device for use later.
rlm@11 124 try {
rlm@11 125 Field deviceIDField;
rlm@11 126 deviceIDField = ALCdevice.class.getDeclaredField("device");
rlm@11 127 deviceIDField.setAccessible(true);
rlm@11 128 try {deviceID = (Long)deviceIDField.get(device);}
rlm@11 129 catch (IllegalArgumentException e) {e.printStackTrace();}
rlm@11 130 catch (IllegalAccessException e) {e.printStackTrace();}
rlm@11 131 deviceIDField.setAccessible(false);}
rlm@11 132 catch (SecurityException e) {e.printStackTrace();}
rlm@11 133 catch (NoSuchFieldException e) {e.printStackTrace();}
rlm@11 134
rlm@11 135 this.audioSend = new AudioSend(this.deviceID);
rlm@11 136
rlm@11 137 // The LWJGL context must be established as the master context before
rlm@11 138 // any other listeners can be created on this device.
rlm@11 139 audioSend.initDevice();
rlm@11 140 // Now, everything is initialized, and it is safe to add more listeners.
rlm@11 141 latch.countDown();
rlm@11 142 }
rlm@11 143
rlm@11 144
rlm@11 145 public void cleanup(){
rlm@11 146 for(SoundProcessor sp : this.soundProcessorMap.values()){
rlm@11 147 sp.cleanup();
rlm@11 148 }
rlm@11 149 super.cleanup();
rlm@11 150 }
rlm@11 151
rlm@11 152 public void updateAllListeners(){
rlm@11 153 for (int i = 0; i < this.listeners.size(); i++){
rlm@11 154 Listener lis = this.listeners.get(i);
rlm@11 155 if (null != lis){
rlm@11 156 Vector3f location = lis.getLocation();
rlm@11 157 Vector3f velocity = lis.getVelocity();
rlm@11 158 Vector3f orientation = lis.getUp();
rlm@11 159 float gain = lis.getVolume();
rlm@11 160 audioSend.setNthListener3f(AL10.AL_POSITION,
rlm@11 161 location.x, location.y, location.z, i);
rlm@11 162 audioSend.setNthListener3f(AL10.AL_VELOCITY,
rlm@11 163 velocity.x, velocity.y, velocity.z, i);
rlm@11 164 audioSend.setNthListener3f(AL10.AL_ORIENTATION,
rlm@11 165 orientation.x, orientation.y, orientation.z, i);
rlm@11 166 audioSend.setNthListenerf(AL10.AL_GAIN, gain, i);
rlm@11 167 }
rlm@11 168 }
rlm@11 169 }
rlm@11 170
rlm@11 171
rlm@29 172 //public final static int BYTES_PER_SAMPLE = 4;
rlm@11 173 private ByteBuffer buffer = BufferUtils.createByteBuffer(4096);
rlm@11 174
rlm@11 175 public void dispatchAudio(float tpf){
rlm@29 176 int samplesToGet = (int) (tpf * outFormat.getSampleRate());
rlm@11 177 try {latch.await();}
rlm@11 178 catch (InterruptedException e) {e.printStackTrace();}
rlm@11 179 audioSend.step(samplesToGet);
rlm@11 180 updateAllListeners();
rlm@11 181
rlm@11 182 for (int i = 0; i < this.listeners.size(); i++){
rlm@11 183 buffer.clear();
rlm@11 184 audioSend.getSamples(buffer, samplesToGet, i);
rlm@11 185 SoundProcessor sp =
rlm@11 186 this.soundProcessorMap.get(this.listeners.get(i));
rlm@30 187 if (null != sp){sp.process(buffer, samplesToGet*outFormat.getFrameSize(), outFormat);}
rlm@11 188 }
rlm@11 189
rlm@11 190 }
rlm@11 191
rlm@11 192 public void update(float tpf){
rlm@11 193 super.update(tpf);
rlm@11 194 dispatchAudio(tpf);
rlm@11 195 }
rlm@11 196
rlm@11 197 }
rlm@11 198