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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;

import de.lessvoid.nifty.sound.SoundSystem;
import de.lessvoid.nifty.spi.sound.SoundDevice;
import de.lessvoid.nifty.spi.sound.SoundHandle;
import de.lessvoid.nifty.tools.resourceloader.NiftyResourceLoader;

import javax.annotation.Nonnull;
import javax.annotation.Nullable;
import java.util.logging.Logger;

/**
 * Slick Implementation of the SoundLoader.
 *
 * @author void
 */
public class OpenALSoundDevice implements SoundDevice {

  /**
   * The logger.
   */
  private static final Logger log = Logger.getLogger(SoundSystem.class.getName());

  private NiftyResourceLoader resourceLoader;

  @Override
  public void setResourceLoader(@Nonnull final NiftyResourceLoader resourceLoader) {
    this.resourceLoader = resourceLoader;
  }

  /**
   * Load a sound.
   *
   * @param soundSystem soundSystem
   * @param filename    filename of sound
   * @return handle to sound
   */
  @Override
  @Nullable
  public SoundHandle loadSound(@Nonnull final SoundSystem soundSystem, @Nonnull final String filename) {
    try {
      return new OpenALSoundHandle(soundSystem, new Sound(filename, resourceLoader));
    } catch (Exception e) {
      log.warning("loading of '" + filename + "' failed" + e);
    }
    return null;
  }

  /**
   * Load a music piece.
   *
   * @param soundSystem soundSystem
   * @param filename    file to load
   * @return the music piece
   */
  @Override
  public SoundHandle loadMusic(@Nonnull final SoundSystem soundSystem, @Nonnull final String filename) {
    try {
      return new OpenALMusicHandle(soundSystem, new Music(filename, true, resourceLoader));
    } catch (Exception e) {
      log.warning("loading of '" + filename + "' failed" + e);
    }
    return null;
  }

  @Override
  public void update(final int delta) {
    Music.poll(delta);
  }
}