de.lessvoid.nifty.sound.openal.slick.StreamSound Maven / Gradle / Ivy

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This is an OpenAL/lwjgl based SoundDevice for Nifty GUI. It was extracted out of Slick2D to be independent of the whole Slick2D library and to be used with none Slick2D based renderes. All credits for the original code go to Kevin Glass and all Slick2D contributers.

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package de.lessvoid.nifty.sound.openal.slick;

import org.lwjgl.BufferUtils;
import org.lwjgl.openal.AL10;

import java.io.IOException;
import java.nio.IntBuffer;
import java.util.logging.Logger;

/**
 * A sound implementation wrapped round a player which reads (and potentially) rereads
 * a stream. This supplies streaming audio
 *
 * @author kevin
 * @author Nathan Sweet 
 * @author Rockstar playAsMusic cleanup
 */
public class StreamSound extends AudioImpl {
  private final Logger log = Logger.getLogger(StreamSound.class.getName());
  /**
   * The player we're going to ask to stream data
   */
  private final OpenALStreamPlayer player;

  /**
   * Create a new sound wrapped round a stream
   *
   * @param player The stream player we'll use to access the stream
   */
  public StreamSound(OpenALStreamPlayer player) {
    this.player = player;
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#isPlaying()
   */
  @Override
  public boolean isPlaying() {
    return SoundStore.get().isPlaying(player);
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#playAsMusic(float, float, boolean)
   */
  @Override
  public int playAsMusic(float pitch, float gain, boolean loop) {
    try {
      cleanUpSource();

      player.setup(pitch);
      player.play(loop);
      SoundStore.get().setStream(player);
    } catch (IOException e) {
      log.warning("Failed to read OGG source: " + player.getSource());
    }

    return SoundStore.get().getSource(0);
  }

  /**
   * Clean up the buffers applied to the sound source
   */
  private void cleanUpSource() {
    SoundStore store = SoundStore.get();

    AL10.alSourceStop(store.getSource(0));
    IntBuffer buffer = BufferUtils.createIntBuffer(1);
    int queued = AL10.alGetSourcei(store.getSource(0), AL10.AL_BUFFERS_QUEUED);

    while (queued > 0) {
      AL10.alSourceUnqueueBuffers(store.getSource(0), buffer);
      queued--;
    }

    AL10.alSourcei(store.getSource(0), AL10.AL_BUFFER, 0);
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#playAsSoundEffect(float, float, boolean, float, float, float)
   */
  @Override
  public int playAsSoundEffect(float pitch, float gain, boolean loop, float x, float y, float z) {
    return playAsMusic(pitch, gain, loop);
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#playAsSoundEffect(float, float, boolean)
   */
  @Override
  public int playAsSoundEffect(float pitch, float gain, boolean loop) {
    return playAsMusic(pitch, gain, loop);
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#stop()
   */
  @Override
  public void stop() {
    SoundStore.get().setStream(null);
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#setPosition(float)
   */
  @Override
  public boolean setPosition(float position) {
    return player.setPosition(position);
  }

  /**
   * @see org.newdawn.slick.openal.AudioImpl#getPosition()
   */
  @Override
  public float getPosition() {
    return player.getPosition();
  }
}