I can't get source type - Java-Gaming.org

Hi,

When I try to get source type I always get the error with the next code 40962. There're 3 constants which corresponds this error number: ALC_INVALID_CONTEXT, AL_ILLEGAL_ENUM and AL_INVALID_ENUM. To which constant does this error code corresponds and why this error has appeared?

I use the SingleStaticSource class from JOAL tutorials. Here the full listing:

import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStreamReader;
import java.nio.ByteBuffer;

import net.java.games.joal.AL;
import net.java.games.joal.ALFactory;
import net.java.games.joal.util.ALut;
import net.java.games.joal.OpenALException;

public class SingleStaticSource {

static AL _al;

// Buffers hold sound data.
static int[] _buffer = new int[1];

// Sources are points emitting sound.
static int[] _source = new int[1];

// Position of the source sound.
static float[] _sourcePos = { 0.0f, 0.0f, 0.0f };

// Velocity of the source sound.
static float[] _sourceVel = { 0.0f, 0.0f, 0.0f };

// Position of the listener.
static float[] _listenerPos = { 0.0f, 0.0f, 0.0f };

// Velocity of the listener.
static float[] _listenerVel = { 0.0f, 0.0f, 0.0f };

// Orientation of the listener. (first 3 elems are "at", second 3 are "up")
static float[] _listenerOri = { 0.0f, 0.0f, -1.0f, 0.0f, 1.0f, 0.0f };

static int loadALData() {

// variables to load into

int[] format = new int[1];
int[] size = new int[1];
ByteBuffer[] data = new ByteBuffer[1];
int[] freq = new int[1];
int[] loop = new int[1];

// Load wav data into a buffer.
_al.alGenBuffers(1, _buffer);
if (_al.alGetError() != AL.AL_NO_ERROR)
return AL.AL_FALSE;

ALut.alutLoadWAVFile(
"wavdata/FancyPants.wav",
format,
data,
size,
freq,
loop);
_al.alBufferData(_buffer[0], format[0], data[0], size[0], freq[0]);
ALut.alutUnloadWAV(format[0], data[0], size[0], freq[0]);

// Bind buffer with a source.
_al.alGenSources(1, _source);

if (_al.alGetError() != AL.AL_NO_ERROR)
return AL.AL_FALSE;

int sourceType = _al.alGetSourcei(_source[0], AL.AL_SOURCE_TYPE);
int error = _al.alGetError();
if (error != AL.AL_NO_ERROR) {
System.out.println("error getting source type. Error id = " + error);
} else {
System.out.println("source type is " + sourceType);
}

_al.alSourcei(_source[0], AL.AL_BUFFER, _buffer[0]);
_al.alSourcef(_source[0], AL.AL_PITCH, 1.0f);
_al.alSourcef(_source[0], AL.AL_GAIN, 1.0f);
_al.alSourcefv(_source[0], AL.AL_POSITION, _sourcePos);
_al.alSourcefv(_source[0], AL.AL_VELOCITY, _sourceVel);
_al.alSourcei(_source[0], AL.AL_LOOPING, loop[0]);

// Do another error check and return.
if (_al.alGetError() == AL.AL_NO_ERROR)
return AL.AL_TRUE;

return AL.AL_FALSE;
}

static void setListenerValues() {
_al.alListenerfv(AL.AL_POSITION, _listenerPos);
_al.alListenerfv(AL.AL_VELOCITY, _listenerVel);
_al.alListenerfv(AL.AL_ORIENTATION, _listenerOri);
}

static void killAllData() {
_al.alDeleteBuffers(1, _buffer);
_al.alDeleteSources(1, _source);
ALut.alutExit();
}

public static void main(String[] args) {
// Initialize OpenAL and clear the error bit.
try {
_al = ALFactory.getAL();
ALut.alutInit();
_al.alGetError();
} catch (OpenALException e) {
e.printStackTrace();
return;
}
// Load the wav data.
if (loadALData() == AL.AL_FALSE)
System.exit(1);

setListenerValues();

char[] c = new char[1];
while (c[0] != 'q') {
try {
BufferedReader buf =
new BufferedReader(new InputStreamReader(System.in));
System.out.println(
"Press a key and hit ENTER: \n"
+ "'p' to play, 's' to stop, " +
"'h' to pause and 'q' to quit");
buf.read(c);
switch (c[0]) {
case 'p' :
// Pressing 'p' will begin playing the sample.
_al.alSourcePlay(_source[0]);
break;
case 's' :
// Pressing 's' will stop the sample from playing.
_al.alSourceStop(_source[0]);
break;
case 'h' :
// Pressing 'n' will pause (hold) the sample.
_al.alSourcePause(_source[0]);
break;
case 'q' :
killAllData();
break;
}
System.out.println("buffer[0] = " + _source[0]);
System.out.println("source[0] = " + _buffer[0]);

} catch (IOException e) {
System.exit(1);
}
}
}
}