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/*
* Created on Saturday, July 10 2010 17:08
*/
package jogamp.openal;
import com.jogamp.common.nio.Buffers;
import com.jogamp.openal.ALException;
import com.jogamp.openal.ALCdevice;
import java.io.UnsupportedEncodingException;
import java.nio.ByteBuffer;
import java.util.ArrayList;
/**
* ALC implementation.
* @author Michael Bien
*/
public class ALCImpl extends ALCAbstractImpl {
public String alcGetString(final ALCdevice device, final int param) {
if (device == null && param == ALC_DEVICE_SPECIFIER) {
throw new ALException("Call alcGetDeviceSpecifiers to fetch all available device names");
}
final ByteBuffer buf = alcGetStringImpl(device, param);
if (buf == null) {
return null;
}
final byte[] res = new byte[buf.capacity()];
buf.get(res);
try {
return new String(res, "US-ASCII");
} catch (final UnsupportedEncodingException e) {
throw new ALException(e);
}
}
/** Entry point (through function pointer) to C language function: <br> <code> const ALCchar * alcGetString(ALCdevice * device, ALCenum param); </code> */
public ByteBuffer alcGetStringImpl(final ALCdevice device, final int param) {
final long __addr_ = getALCProcAddressTable()._addressof_alcGetString;
if (__addr_ == 0) {
throw new UnsupportedOperationException("Method \"alcGetStringImpl\" not available");
}
ByteBuffer _res;
_res = dispatch_alcGetStringImpl1(((device == null) ? null : device.getBuffer()), param, __addr_);
if (_res == null) {
return null;
}
Buffers.nativeOrder(_res);
return _res;
}
private native java.nio.ByteBuffer dispatch_alcGetStringImpl1(ByteBuffer deviceBuffer, int param, long addr);
/**
* Fetches the names of the available ALC device specifiers.
* Equivalent to the C call alcGetString(NULL, ALC_DEVICE_SPECIFIER).
*/
public String[] alcGetDeviceSpecifiers() {
return getDoubleNullTerminatedString(ALC_DEVICE_SPECIFIER);
}
/**
* Fetches the names of the available ALC capture device specifiers.
* Equivalent to the C call alcGetString(NULL, ALC_CAPTURE_DEVICE_SPECIFIER).
*/
public String[] alcGetCaptureDeviceSpecifiers() {
return getDoubleNullTerminatedString(ALC_CAPTURE_DEVICE_SPECIFIER);
}
private String[] getDoubleNullTerminatedString(final int which) {
final ByteBuffer buf = alcGetStringImpl(null, which);
if (buf == null) {
return null;
}
final byte[] bytes = new byte[buf.capacity()];
buf.get(bytes);
try {
final ArrayList/*<String>*/ res = new ArrayList/*<String>*/();
int i = 0;
while (i < bytes.length) {
final int startIndex = i;
while ((i < bytes.length) && (bytes[i] != 0)) {
i++;
}
res.add(new String(bytes, startIndex, i - startIndex, "US-ASCII"));
i++;
}
return (String[]) res.toArray(new String[res.size()]);
} catch (final UnsupportedEncodingException e) {
throw new ALException(e);
}
}
}
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