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-/* DataBufferShort.java --
- Copyright (C) 2004 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., 51 Franklin Street, Fifth Floor, Boston, MA
-02110-1301 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
-obligated to do so. If you do not wish to do so, delete this
-exception statement from your version. */
-
-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 DataBufferShort extends DataBuffer
-{
- private short[] data;
- private short[][] bankData;
-
- /**
- * Creates a new data buffer with a single data bank containing the
- * specified number of <code>short</code> elements.
- *
- * @param size the number of elements in the data bank.
- */
- public DataBufferShort(int size)
- {
- super(TYPE_SHORT, size, 1, 0);
- bankData = new short[1][];
- data = new short[size];
- bankData[0] = data;
- }
-
- /**
- * Creates a new data buffer with the specified number of data banks,
- * each containing the specified number of <code>short</code> elements.
- *
- * @param size the number of elements in the data bank.
- * @param numBanks the number of data banks.
- */
- public DataBufferShort(int size, int numBanks)
- {
- super(TYPE_SHORT, size, numBanks);
- bankData = new short[numBanks][size];
- data = bankData[0];
- }
-
- /**
- * Creates a new data buffer backed by the specified data bank.
- * <p>
- * Note: there is no exception when <code>dataArray</code> is
- * <code>null</code>, but in that case an exception will be thrown
- * later if you attempt to access the data buffer.
- *
- * @param dataArray the data bank.
- * @param size the number of elements in the data bank.
- */
- public DataBufferShort(short[] dataArray, int size)
- {
- super(TYPE_SHORT, size, 1, 0);
- bankData = new short[1][];
- data = dataArray;
- bankData[0] = data;
- }
-
- /**
- * Creates a new data buffer backed by the specified data bank, with
- * the specified offset to the first element.
- * <p>
- * Note: there is no exception when <code>dataArray</code> is
- * <code>null</code>, but in that case an exception will be thrown
- * later if you attempt to access the data buffer.
- *
- * @param dataArray the data bank.
- * @param size the number of elements in the data bank.
- * @param offset the offset to the first element in the array.
- */
- public DataBufferShort(short[] dataArray, int size, int offset)
- {
- super(TYPE_SHORT, size, 1, offset);
- bankData = new short[1][];
- data = dataArray;
- bankData[0] = data;
- }
-
- /**
- * Creates a new data buffer backed by the specified data banks.
- *
- * @param dataArray the data banks.
- * @param size the number of elements in the data bank.
- *
- * @throws NullPointerException if <code>dataArray</code> is
- * <code>null</code>.
- */
- public DataBufferShort(short[][] dataArray, int size)
- {
- super(TYPE_SHORT, size, dataArray.length);
- bankData = dataArray;
- data = bankData[0];
- }
-
- /**
- * Creates a new data buffer backed by the specified data banks, with
- * the specified offsets to the first element in each bank.
- *
- * @param dataArray the data banks.
- * @param size the number of elements in the data bank.
- * @param offsets the offsets to the first element in each data bank.
- *
- * @throws NullPointerException if <code>dataArray</code> is
- * <code>null</code>.
- */
- public DataBufferShort(short[][] dataArray, int size, int[] offsets)
- {
- super(TYPE_SHORT, size, dataArray.length, offsets);
- bankData = dataArray;
- data = bankData[0];
- }
-
- /**
- * Returns the first data bank.
- *
- * @return The first data bank.
- */
- public short[] getData()
- {
- return data;
- }
-
- /**
- * Returns a data bank.
- *
- * @param bank the bank index.
- * @return A data bank.
- */
- public short[] getData(int bank)
- {
- return bankData[bank];
- }
-
- /**
- * Returns the array underlying this <code>DataBuffer</code>.
- *
- * @return The data banks.
- */
- public short[][] getBankData()
- {
- return bankData;
- }
-
- /**
- * Returns an element from the first data bank. The offset (specified in
- * the constructor) is added to <code>i</code> before accessing the
- * underlying data array.
- *
- * @param i the element index.
- * @return The element.
- */
- public int getElem(int i)
- {
- return data[i+offset];
- }
-
- /**
- * Returns an element from a particular data bank. The offset (specified in
- * the constructor) is added to <code>i</code> before accessing the
- * underlying data array.
- *
- * @param bank the bank index.
- * @param i the element index.
- * @return The element.
- */
- public int getElem(int bank, int i)
- {
- return bankData[bank][i+offsets[bank]];
- }
-
- /**
- * Sets an element in the first data bank. The offset (specified in the
- * constructor) is added to <code>i</code> before updating the underlying
- * data array.
- *
- * @param i the element index.
- * @param val the new element value.
- */
- public void setElem(int i, int val)
- {
- data[i+offset] = (short) val;
- }
-
- /**
- * Sets an element in a particular data bank. The offset (specified in the
- * constructor) is added to <code>i</code> before updating the underlying
- * data array.
- *
- * @param bank the data bank index.
- * @param i the element index.
- * @param val the new element value.
- */
- public void setElem(int bank, int i, int val)
- {
- bankData[bank][i+offsets[bank]] = (short) val;
- }
-}