java.lang.UnsatisfiedLinkError: nalGenBuffers ?

[blue_tomato]

I am getting

java.lang.UnsatisfiedLinkError: nalGenBuffers

The offending line is:

   AL10.alGenBuffers(scratchBuffer);

I am using the sound code I found in the spaceinvaders tutorial:

import java.nio.IntBuffer;

import org.lwjgl.BufferUtils;
import org.lwjgl.LWJGLException;
import org.lwjgl.openal.AL;
import org.lwjgl.openal.AL10;
import org.lwjgl.test.openal.WaveData;

/**
 * $Id: SoundManager.java,v 1.1 2004/06/12 19:59:20 matzon Exp $
 * <p>
 * Simple sound manager for OpenAL using n sources accessed in
 * a round robin schedule. Source n is reserved for a single buffer and checking for
 * whether it's playing.
 * </p>
 * @author Brian Matzon <brian@matzon.dk>
 * @version $Revision: 1.1 $
 */
public class SoundManager {

  /** We support at most 256 buffers*/
  private int[] buffers = new int[256];

  /** Number of sources is limited tby user (and hardware) */
  private int[] sources;

  /** Our internal scratch buffer */
  private IntBuffer scratchBuffer = BufferUtils.createIntBuffer(256);

  /** Whether we're running in no sound mode */
  private boolean soundOutput;

  /** Current index in our buffers */
  private int bufferIndex;

  /** Current index in our source list */
  private int sourceIndex;

  /**
   * Creates a new SoundManager
   */
  public SoundManager() {
  }

  /**
   * Plays a sound effect
   * @param buffer Buffer index to play gotten from addSound
   */
  public void playEffect(int buffer) {
    if(soundOutput) {
 // make sure we never choose last channel, since it is used for special sounds
     int channel = sources[(sourceIndex++ % (sources.length-1))];

 // link buffer and source, and play it
     AL10.alSourcei(channel, AL10.AL_BUFFER, buffers[buffer]);
     AL10.alSourcePlay(channel);
    }
  }

  /**
   * Plays a sound on last source
   * @param buffer Buffer index to play gotten from addSound
   */
  public void playSound(int buffer) {
    if(soundOutput) {
 AL10.alSourcei(sources[sources.length-1], AL10.AL_BUFFER, buffers[buffer]);
 AL10.alSourcePlay(sources[sources.length-1]);
    }
  }

  /**
   * Whether a sound is playing on last source
   * @return true if a source is playing right now on source n
   */
  public boolean isPlayingSound() {
   return AL10.alGetSourcei(sources[sources.length-1], AL10.AL_SOURCE_STATE) == AL10.AL_PLAYING;
  }

  /**
   * Initializes the SoundManager
   *
   * @param channels Number of sources to create
   */
  public void initialize(int channels) {
    try {
     AL.create();

     // allocate sources
     scratchBuffer.limit(channels);
     AL10.alGenSources(scratchBuffer);
     scratchBuffer.rewind();
     scratchBuffer.get(sources = new int[channels]);

     // could we allocate all channels?
     if(AL10.alGetError() != AL10.AL_NO_ERROR) {
      throw new LWJGLException("Unable to allocate " + channels + " sources");
     }

     // we have sound
     soundOutput = true;
    } catch (LWJGLException le) {
     le.printStackTrace();
 System.out.println("Sound disabled");
    }
  }

  /**
   * Adds a sound to the Sound Managers pool
   *
   * @param path Path to file to load
   * @return index into SoundManagers buffer list
   */
  public int addSound(String path) {
    // Generate 1 buffer entry
    scratchBuffer.rewind().position(0).limit(1);
    AL10.alGenBuffers(scratchBuffer);
    buffers[bufferIndex] = scratchBuffer.get(0);

    // load wave data from buffer
    WaveData wavefile = WaveData.create("sounds/" + path);

    // copy to buffers
    AL10.alBufferData(buffers[bufferIndex], wavefile.format, wavefile.data, wavefile.samplerate);

    // unload file again
    wavefile.dispose();

    // return index for this sound
   return bufferIndex++;
  }

  /**
   * Destroy this SoundManager
   */
  public void destroy() {
    if(soundOutput) {

 // stop playing sounds
 scratchBuffer.position(0).limit(sources.length);
 scratchBuffer.put(sources).flip();
 AL10.alSourceStop(scratchBuffer);

 // destroy sources
 AL10.alDeleteSources(scratchBuffer);

 // destroy buffers
 scratchBuffer.position(0).limit(bufferIndex);
 scratchBuffer.put(buffers, 0, bufferIndex).flip();
 AL10.alDeleteBuffers(scratchBuffer);

 // destory OpenAL
     AL.destroy();
    }
  }
}

All DLLs are there, and it compiles fine too...

 :?

[Matzon]

sounds very much like lwjglaudio.dll is missing... (or libopenal on other platforms...)

And you're not getting any exceptions ?

[blue_tomato]

sounds very much like lwjglaudio.dll is missing... (or libopenal on other platforms...)

And you're not getting any exceptions ?

Thanks for the reply. No, no exceptions, and the lwjglaudio.dll is there... Other dll's in the same directory is found though, and the example "test" sound code code is working...

I did manage to get sound finally though, but I had to use the embedded sound example code, discarding the other code. It turns out the sound collided with the FMOD music playing in the background though, so no luck there either.

I also tried the AudioClip in Java, and I got it to work even with FMOD music in the background, but with very poor sound quality and for some reason the sound was played a bit delayed, some 200ms, after issuing .play(). Not much, but too much in my case as it does not look good in my game.

So, to make a long story short, after trying a bunch of things, I finally found out it is too much hassle to do this. I will simply only use music in the game, and forget sound effects...

I just want two methods: play(soundfile) and soundfile = load(filename), accepting OGG and wav. With one separate sound channel used per sound object.

But instead overwhelmed with technical problems and overly complex APIs that does not work without a lot of tweaking...