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//******************************************************************************
//
// File: DataBufferIntegerMatrix.java
// Package: edu.rit.image
// Unit: Class edu.rit.image.DataBufferIntegerMatrix
//
// This Java source file is copyright (C) 2005 by Alan Kaminsky. All rights
// reserved. For further information, contact the author, Alan Kaminsky, at
// ark@cs.rit.edu.
//
// This Java source file is part of the Parallel Java Library ("PJ"). PJ is free
// software; you can redistribute it and/or modify it under the terms of the GNU
// General Public License as published by the Free Software Foundation; either
// version 3 of the License, or (at your option) any later version.
//
// PJ 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 for more details.
//
// Linking this library statically or dynamically with other modules is making a
// combined work based on this library. Thus, the terms and conditions of the
// GNU General Public License cover the whole combination.
//
// As a special exception, the copyright holders of this library give you
// permission to link this library with independent modules to produce an
// executable, regardless of the license terms of these independent modules, and
// to copy and distribute the resulting executable under terms of your choice,
// provided that you also meet, for each linked independent module, the terms
// and conditions of the license of that module. An independent module is a
// module which is not derived from or based on this library. If you modify this
// library, you may extend this exception to your version of the library, but
// you are not obligated to do so. If you do not wish to do so, delete this
// exception statement from your version.
//
// A copy of the GNU General Public License is provided in the file gpl.txt. You
// may also obtain a copy of the GNU General Public License on the World Wide
// Web at http://www.gnu.org/licenses/gpl.html.
//
//******************************************************************************
package edu.rit.image;
import java.awt.image.DataBuffer;
/**
* Class DataBufferIntegerMatrix provides a DataBuffer that stores its data in
* an underlying integer matrix.
*
* @author Alan Kaminsky
* @version 12-Feb-2006
*/
class DataBufferIntegerMatrix
extends DataBuffer
{
// Hidden data members.
int[][] myMatrix;
private int myWidth;
// Exported constructors.
/**
* Construct a new data buffer for the given integer matrix.
*
* @param theMatrix Underlying matrix.
*/
public DataBufferIntegerMatrix
(int[][] theMatrix)
{
super (DataBuffer.TYPE_INT, height (theMatrix) * width (theMatrix));
myMatrix = theMatrix;
myWidth = width (theMatrix);
}
static int height
(int[][] theMatrix)
{
return theMatrix.length;
}
static int width
(int[][] theMatrix)
{
return theMatrix.length == 0 ? 0 : theMatrix[0].length;
}
// Exported operations.
/**
* Obtain the element at the given index in this data buffer.
*
* @param i Index.
*
* @return Element value.
*/
public int getElem
(int i)
{
return myMatrix [i / myWidth] [i % myWidth];
}
/**
* Obtain the element at the given bank and index in this data buffer.
*
* @param bank Bank.
* @param i Index.
*
* @return Element value.
*/
public int getElem
(int bank,
int i)
{
return myMatrix [i / myWidth] [i % myWidth];
}
/**
* Set the element at the given index in this data buffer.
*
* @param i Index.
* @param val Element value.
*/
public void setElem
(int i,
int val)
{
myMatrix [i / myWidth] [i % myWidth] = val;
}
/**
* Set the element at the given bank and index in this data buffer.
*
* @param bank Bank.
* @param i Index.
* @param val Element value.
*/
public void setElem
(int bank,
int i,
int val)
{
myMatrix [i / myWidth] [i % myWidth] = val;
}
}
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