/*
* Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
* FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
* questions.
*/
package sun.java2d;
import java.awt.image.DataBuffer;
import java.nio.*;
public final class DataBufferNIOInt extends DataBuffer {
/** The default data bank. */
IntBuffer data;
/** All data banks */
IntBuffer bankdata[];
/**
* Constructs an integer-based <CODE>DataBuffer</CODE> with a single bank
* and the specified size.
*
* @param size The size of the <CODE>DataBuffer</CODE>.
*/
public DataBufferNIOInt(int size) {
super(TYPE_INT,size);
//+++gdb how to get sizeof(int) in java? Using 4 for now.
data = getBufferOfSize(size * 4).asIntBuffer();
bankdata = new IntBuffer[1];
bankdata[0] = data;
}
/**
* Returns the default (first) IntBuffer in <CODE>DataBuffer</CODE>.
*
* @return The first IntBuffer.
*/
public IntBuffer getBuffer() {
return data;
}
/**
* Returns the Buffer for the specified bank.
*
* @param bank The bank whose Buffer you want to get.
* @return The Buffer for the specified bank.
*/
public IntBuffer getBuffer(int bank) {
return bankdata[bank];
}
/**
* Returns the default (first) int data array in <CODE>DataBuffer</CODE>.
*
* @return The first integer data array.
*/
public int[] getData() {
return data.array();
}
/**
* Returns the data array for the specified bank.
*
* @param bank The bank whose data array you want to get.
* @return The data array for the specified bank.
*/
public int[] getData(int bank) {
return bankdata[bank].array();
}
/**
* Returns the data arrays for all banks.
* @return All of the data arrays.
*/
public int[][] getBankData() {
// Unsupported.
return null;
}
/**
* Returns the requested data array element from the first (default) bank.
*
* @param i The data array element you want to get.
* @return The requested data array element as an integer.
* @see #setElem(int, int)
* @see #setElem(int, int, int)
*/
public int getElem(int i) {
return data.get(i+offset);
}
/**
* Returns the requested data array element from the specified bank.
*
* @param bank The bank from which you want to get a data array element.
* @param i The data array element you want to get.
* @return The requested data array element as an integer.
* @see #setElem(int, int)
* @see #setElem(int, int, int)
*/
public int getElem(int bank, int i) {
return bankdata[bank].get(i+offsets[bank]);
}
/**
* Sets the requested data array element in the first (default) bank
* to the specified value.
*
* @param i The data array element you want to set.
* @param val The integer value to which you want to set the data array element.
* @see #getElem(int)
* @see #getElem(int, int)
*/
public void setElem(int i, int val) {
data.put(i+offset, val);
}
/**
* Sets the requested data array element in the specified bank
* to the integer value <CODE>i</CODE>.
* @param bank The bank in which you want to set the data array element.
* @param i The data array element you want to set.
* @param val The integer value to which you want to set the specified data array element.
* @see #getElem(int)
* @see #getElem(int, int)
*/
public void setElem(int bank, int i, int val) {
bankdata[bank].put(i+offsets[bank], val);
}
ByteBuffer getBufferOfSize(int size)
{
ByteBuffer buffer = ByteBuffer.allocateDirect(size);
buffer.order(ByteOrder.nativeOrder());
return buffer;
}
}