rlm@11: package com.aurellem.capture.audio;
rlm@11:
rlm@11: import java.lang.reflect.Field;
rlm@11: import java.nio.ByteBuffer;
rlm@11: import java.util.HashMap;
rlm@11: import java.util.Vector;
rlm@11: import java.util.concurrent.CountDownLatch;
rlm@11: import java.util.logging.Level;
rlm@11: import java.util.logging.Logger;
rlm@11:
rlm@11: import org.lwjgl.LWJGLException;
rlm@11: import org.lwjgl.openal.AL;
rlm@11: import org.lwjgl.openal.AL10;
rlm@11: import org.lwjgl.openal.ALCdevice;
rlm@11: import org.lwjgl.openal.OpenALException;
rlm@11:
rlm@11: import com.aurellem.send.AudioSend;
rlm@11: import com.jme3.audio.Listener;
rlm@11: import com.jme3.audio.lwjgl.LwjglAudioRenderer;
rlm@11: import com.jme3.math.Vector3f;
rlm@11: import com.jme3.util.BufferUtils;
rlm@11:
rlm@11: public class AudioSendRenderer
rlm@11:
rlm@11: extends LwjglAudioRenderer implements MultiListener {
rlm@11:
rlm@11: private AudioSend audioSend;
rlm@11:
rlm@11: /**
rlm@11: * Keeps track of all the listeners which have been registered so far.
rlm@11: * The first element is null, which represents the zeroth
rlm@11: * LWJGL listener which is created automatically.
rlm@11: */
rlm@11: public Vector listeners = new Vector();
rlm@11:
rlm@11: public void initialize(){
rlm@11: super.initialize();
rlm@11: listeners.add(null);
rlm@11: }
rlm@11:
rlm@11: /**
rlm@11: * This is to call the native methods which require the OpenAL device ID.
rlm@11: * currently it is obtained through reflection.
rlm@11: */
rlm@11: private long deviceID;
rlm@11:
rlm@11: /**
rlm@11: * To ensure that deviceID and listeners are
rlm@11: * properly initialized before any additional listeners are added.
rlm@11: */
rlm@11: private CountDownLatch latch = new CountDownLatch(1);
rlm@11:
rlm@11: /**
rlm@11: * Each listener (including the main LWJGL listener) can be registered
rlm@11: * with a SoundProcessor, which this Renderer will call whenever
rlm@11: * there is new audio data to be processed.
rlm@11: */
rlm@11: public HashMap soundProcessorMap =
rlm@11: new HashMap();
rlm@11:
rlm@11:
rlm@11: /**
rlm@11: * Create a new slave context on the recorder device which will render all the
rlm@11: * sounds in the main LWJGL context with respect to this listener.
rlm@11: */
rlm@11: public void addListener(Listener l) {
rlm@11: try {this.latch.await();}
rlm@11: catch (InterruptedException e) {e.printStackTrace();}
rlm@11: audioSend.addListener();
rlm@11: this.listeners.add(l);
rlm@11: }
rlm@11:
rlm@11: /**
rlm@11: * Whenever new data is rendered in the perspective of this listener,
rlm@11: * this Renderer will send that data to the SoundProcessor of your choosing.
rlm@11: */
rlm@11: public void registerSoundProcessor(Listener l, SoundProcessor sp) {
rlm@11: this.soundProcessorMap.put(l, sp);
rlm@11: }
rlm@11:
rlm@11: /**
rlm@11: * Registers a SoundProcessor for the main LWJGL context. IF all you want to
rlm@11: * do is record the sound you would normally hear in your application, then
rlm@11: * this is the only method you have to worry about.
rlm@11: */
rlm@11: public void registerSoundProcessor(SoundProcessor sp){
rlm@11: // register a sound processor for the default listener.
rlm@11: this.soundProcessorMap.put(null, sp);
rlm@11: }
rlm@11:
rlm@11: private static final Logger logger =
rlm@11: Logger.getLogger(AudioSendRenderer.class.getName());
rlm@11:
rlm@11:
rlm@11:
rlm@11: /**
rlm@11: * Instead of taking whatever device is available on the system, this call
rlm@11: * creates the "Multiple Audio Send" device, which supports multiple listeners in a limited
rlm@11: * capacity. For each listener, the device renders it not to the sound device, but
rlm@11: * instead to buffers which it makes available via JNI.
rlm@11: */
rlm@11: public void initInThread(){
rlm@11: try{
rlm@11: if (!AL.isCreated()){
rlm@11: AL.create("Multiple Audio Send", 44100, 60, false);
rlm@11: }
rlm@11: }catch (OpenALException ex){
rlm@11: logger.log(Level.SEVERE, "Failed to load audio library", ex);
rlm@11: System.exit(1);
rlm@11: return;
rlm@11: }catch (LWJGLException ex){
rlm@11: logger.log(Level.SEVERE, "Failed to load audio library", ex);
rlm@11: System.exit(1);
rlm@11: return;
rlm@11: }
rlm@11: super.initInThread();
rlm@11:
rlm@11: ALCdevice device = AL.getDevice();
rlm@11:
rlm@11: // RLM: use reflection to grab the ID of our device for use later.
rlm@11: try {
rlm@11: Field deviceIDField;
rlm@11: deviceIDField = ALCdevice.class.getDeclaredField("device");
rlm@11: deviceIDField.setAccessible(true);
rlm@11: try {deviceID = (Long)deviceIDField.get(device);}
rlm@11: catch (IllegalArgumentException e) {e.printStackTrace();}
rlm@11: catch (IllegalAccessException e) {e.printStackTrace();}
rlm@11: deviceIDField.setAccessible(false);}
rlm@11: catch (SecurityException e) {e.printStackTrace();}
rlm@11: catch (NoSuchFieldException e) {e.printStackTrace();}
rlm@11:
rlm@11: this.audioSend = new AudioSend(this.deviceID);
rlm@11:
rlm@11: // The LWJGL context must be established as the master context before
rlm@11: // any other listeners can be created on this device.
rlm@11: audioSend.initDevice();
rlm@11: // Now, everything is initialized, and it is safe to add more listeners.
rlm@11: latch.countDown();
rlm@11: }
rlm@11:
rlm@11:
rlm@11: public void cleanup(){
rlm@11: for(SoundProcessor sp : this.soundProcessorMap.values()){
rlm@11: sp.cleanup();
rlm@11: }
rlm@11: super.cleanup();
rlm@11: }
rlm@11:
rlm@11: public void updateAllListeners(){
rlm@11: for (int i = 0; i < this.listeners.size(); i++){
rlm@11: Listener lis = this.listeners.get(i);
rlm@11: if (null != lis){
rlm@11: Vector3f location = lis.getLocation();
rlm@11: Vector3f velocity = lis.getVelocity();
rlm@11: Vector3f orientation = lis.getUp();
rlm@11: float gain = lis.getVolume();
rlm@11: audioSend.setNthListener3f(AL10.AL_POSITION,
rlm@11: location.x, location.y, location.z, i);
rlm@11: audioSend.setNthListener3f(AL10.AL_VELOCITY,
rlm@11: velocity.x, velocity.y, velocity.z, i);
rlm@11: audioSend.setNthListener3f(AL10.AL_ORIENTATION,
rlm@11: orientation.x, orientation.y, orientation.z, i);
rlm@11: audioSend.setNthListenerf(AL10.AL_GAIN, gain, i);
rlm@11: }
rlm@11: }
rlm@11: }
rlm@11:
rlm@11:
rlm@11: public final static int BYTES_PER_SAMPLE = 4;
rlm@11: private ByteBuffer buffer = BufferUtils.createByteBuffer(4096);
rlm@11:
rlm@11: public void dispatchAudio(float tpf){
rlm@11: int samplesToGet = (int) (tpf * 44100);
rlm@11: try {latch.await();}
rlm@11: catch (InterruptedException e) {e.printStackTrace();}
rlm@11: audioSend.step(samplesToGet);
rlm@11: updateAllListeners();
rlm@11:
rlm@11: for (int i = 0; i < this.listeners.size(); i++){
rlm@11: buffer.clear();
rlm@11: audioSend.getSamples(buffer, samplesToGet, i);
rlm@11: SoundProcessor sp =
rlm@11: this.soundProcessorMap.get(this.listeners.get(i));
rlm@11: if (null != sp){sp.process(buffer, samplesToGet*BYTES_PER_SAMPLE);}
rlm@11: }
rlm@11:
rlm@11: }
rlm@11:
rlm@11: public void update(float tpf){
rlm@11: super.update(tpf);
rlm@11: dispatchAudio(tpf);
rlm@11: }
rlm@11:
rlm@11: }
rlm@11: