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/*
* Created on Wednesday, May 25 2011 00:57
*/
package com.jogamp.opencl.impl;
import java.nio.IntBuffer;
import com.jogamp.common.nio.NativeSizeBuffer;
import com.jogamp.opencl.llb.CL;
import com.jogamp.opencl.spi.CLAccessorFactory;
import com.jogamp.opencl.spi.CLInfoAccessor;
import com.jogamp.opencl.spi.CLPlatformInfoAccessor;
import java.nio.Buffer;
import static com.jogamp.opencl.CLException.*;
/**
*
* @author Michael Bien
*/
public class CLTLAccessorFactory implements CLAccessorFactory {
@Override
public CLInfoAccessor createDeviceInfoAccessor(CL cl, long id) {
return new CLDeviceInfoAccessor(cl, id);
}
@Override
public CLPlatformInfoAccessor createPlatformInfoAccessor(CL cl, long id) {
return new CLTLPlatformInfoAccessor(cl, id);
}
private final static class CLDeviceInfoAccessor extends CLTLInfoAccessor {
private final CL cl;
private final long ID;
private CLDeviceInfoAccessor(CL cl, long id) {
this.cl = cl;
this.ID = id;
}
@Override
public int getInfo(int name, long valueSize, Buffer value, NativeSizeBuffer valueSizeRet) {
return cl.clGetDeviceInfo(ID, name, valueSize, value, valueSizeRet);
}
}
private final static class CLTLPlatformInfoAccessor extends CLTLInfoAccessor implements CLPlatformInfoAccessor {
private final long ID;
private final CL cl;
private CLTLPlatformInfoAccessor(CL cl, long id) {
this.ID = id;
this.cl = cl;
}
@Override
public int getInfo(int name, long valueSize, Buffer value, NativeSizeBuffer valueSizeRet) {
return cl.clGetPlatformInfo(ID, name, valueSize, value, valueSizeRet);
}
@Override
public long[] getDeviceIDs(long type) {
IntBuffer buffer = getBB(4).asIntBuffer();
int ret = cl.clGetDeviceIDs(ID, type, 0, null, buffer);
int count = buffer.get(0);
// return an empty buffer rather than throwing an exception
if(ret == CL.CL_DEVICE_NOT_FOUND || count == 0) {
return new long[0];
}else{
checkForError(ret, "error while enumerating devices");
NativeSizeBuffer deviceIDs = NativeSizeBuffer.wrap(getBB(count*NativeSizeBuffer.elementSize()));
ret = cl.clGetDeviceIDs(ID, type, count, deviceIDs, null);
checkForError(ret, "error while enumerating devices");
long[] ids = new long[count];
for (int i = 0; i < ids.length; i++) {
ids[i] = deviceIDs.get(i);
}
return ids;
}
}
}
}
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