DataBufferByte.java   [plain text]

/* Copyright (C) 2000, 2002  Free Software Foundation

This file is part of GNU Classpath.

GNU Classpath 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 2, or (at your option)
any later version.

GNU Classpath 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.

You should have received a copy of the GNU General Public License
along with GNU Classpath; see the file COPYING.  If not, write to the
Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA
02111-1307 USA.

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
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package java.awt.image;

/* This is one of several classes that are nearly identical. Maybe we
   should have a central template and generate all these files. This
   is one of the cases where templates or macros would have been
   useful to have in Java.

   This file has been created using search-replace. My only fear is
   that these classes will grow out-of-sync as of a result of changes
   that are not propagated to the other files. As always, mirroring
   code is a maintenance nightmare.  */

/**
 * @author Rolf W. Rasmussen <rolfwr@ii.uib.no>
 */
public final class DataBufferByte extends DataBuffer
{
  private byte[] data;
  private byte[][] bankData;
  
  public DataBufferByte(int size)
  {
    super(TYPE_BYTE, size);
    data = new byte[size];
  }

  public DataBufferByte(int size, int numBanks)
  {
    super(TYPE_BYTE, size, numBanks);
    bankData = new byte[numBanks][size];
    data = bankData[0];
  }

  public DataBufferByte(byte[] dataArray, int size)
  {
    super(TYPE_BYTE, size);
    data = dataArray;
  }
    
  public DataBufferByte(byte[] dataArray, int size, int offset)
  {
    super(TYPE_BYTE, size, 1, offset);
    data = dataArray;
  }

  public DataBufferByte(byte[][] dataArray, int size)
  {
    super(TYPE_BYTE, size, dataArray.length);
    bankData = dataArray;
    data = bankData[0];
  }

  public DataBufferByte(byte[][] dataArray, int size, int[] offsets)
  {
    super(TYPE_BYTE, size, dataArray.length, offsets);
    bankData = dataArray;
    data = bankData[0];
  }

  public byte[] getData()
  {
    return data;
  }
    
  public byte[] getData(int bank) 
  {
    return bankData[bank];
  }
    
  public byte[][] getBankData()
  {
    return bankData;
  }
  
  public int getElem(int i)
  {
    return data[i+offset] & 0xff; // get unsigned byte as int
  }
  
  public int getElem(int bank, int i)
  {
    // get unsigned byte as int
    return bankData[bank][i+offsets[bank]] & 0xff;
  }

  public void setElem(int i, int val)
  {
    data[i+offset] = (byte) val;
  }

  public void setElem(int bank, int i, int val)
  {
    bankData[bank][i+offsets[bank]] = (byte) val;
  }
}