135 lines
4.2 KiB
Java
135 lines
4.2 KiB
Java
/*
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* Copyright (c) 2002-2010 LWJGL Project
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are
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* met:
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*
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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*
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* * Neither the name of 'LWJGL' nor the names of
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* its contributors may be used to endorse or promote products derived
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* from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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* "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
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* TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
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* PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
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* EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
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* PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
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* PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
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* LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
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* NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.lwjgl.opencl;
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import org.lwjgl.LWJGLUtil;
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import org.lwjgl.PointerBuffer;
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import java.nio.ByteBuffer;
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import static org.lwjgl.opencl.CL10.*;
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/**
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* Base implementation of information utility classes.
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*
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* @author Spasi
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*/
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abstract class InfoUtilAbstract<T extends CLObject> implements InfoUtil<T> {
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protected InfoUtilAbstract() {
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}
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protected abstract int getInfo(T object, int param_name, ByteBuffer param_value, PointerBuffer param_value_size_ret);
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// Optional
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protected int getInfoSizeArraySize(final T object, final int param_name) {
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throw new UnsupportedOperationException();
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}
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protected PointerBuffer getSizesBuffer(final T object, final int param_name) {
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final int size = getInfoSizeArraySize(object, param_name);
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final PointerBuffer buffer = APIUtil.getBufferPointer(size);
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buffer.limit(size);
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getInfo(object, param_name, buffer.getBuffer(), null);
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return buffer;
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}
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public int getInfoInt(final T object, final int param_name) {
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object.checkValid();
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final ByteBuffer buffer = APIUtil.getBufferByte(4);
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getInfo(object, param_name, buffer, null);
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return buffer.getInt(0);
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}
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public long getInfoSize(final T object, final int param_name) {
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object.checkValid();
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final PointerBuffer buffer = APIUtil.getBufferPointer();
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getInfo(object, param_name, buffer.getBuffer(), null);
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return buffer.get(0);
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}
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public long[] getInfoSizeArray(final T object, final int param_name) {
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object.checkValid();
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final int size = getInfoSizeArraySize(object, param_name);
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final PointerBuffer buffer = APIUtil.getBufferPointer(size);
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getInfo(object, param_name, buffer.getBuffer(), null);
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final long[] array = new long[size];
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for ( int i = 0; i < size; i++ )
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array[i] = buffer.get(i);
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return array;
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}
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public long getInfoLong(final T object, final int param_name) {
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object.checkValid();
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final ByteBuffer buffer = APIUtil.getBufferByte(8);
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getInfo(object, param_name, buffer, null);
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return buffer.getLong(0);
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}
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public String getInfoString(final T object, final int param_name) {
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object.checkValid();
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final int bytes = getSizeRet(object, param_name);
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if ( bytes <= 1 )
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return null;
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final ByteBuffer buffer = APIUtil.getBufferByte(bytes);
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getInfo(object, param_name, buffer, null);
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buffer.limit(bytes - 1); // Exclude null-termination
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return APIUtil.getString(buffer);
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}
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protected final int getSizeRet(final T object, final int param_name) {
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final PointerBuffer bytes = APIUtil.getBufferPointer();
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final int errcode = getInfo(object, param_name, null, bytes);
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if ( errcode != CL_SUCCESS )
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throw new IllegalArgumentException("Invalid parameter specified: " + LWJGLUtil.toHexString(param_name));
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return (int)bytes.get(0);
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}
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} |