diff options
author | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
---|---|---|
committer | upstream source tree <ports@midipix.org> | 2015-03-15 20:14:05 -0400 |
commit | 554fd8c5195424bdbcabf5de30fdc183aba391bd (patch) | |
tree | 976dc5ab7fddf506dadce60ae936f43f58787092 /libjava/classpath/java/awt/image/DataBufferInt.java | |
download | cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.bz2 cbb-gcc-4.6.4-554fd8c5195424bdbcabf5de30fdc183aba391bd.tar.xz |
obtained gcc-4.6.4.tar.bz2 from upstream website;upstream
verified gcc-4.6.4.tar.bz2.sig;
imported gcc-4.6.4 source tree from verified upstream tarball.
downloading a git-generated archive based on the 'upstream' tag
should provide you with a source tree that is binary identical
to the one extracted from the above tarball.
if you have obtained the source via the command 'git clone',
however, do note that line-endings of files in your working
directory might differ from line-endings of the respective
files in the upstream repository.
Diffstat (limited to 'libjava/classpath/java/awt/image/DataBufferInt.java')
-rw-r--r-- | libjava/classpath/java/awt/image/DataBufferInt.java | 244 |
1 files changed, 244 insertions, 0 deletions
diff --git a/libjava/classpath/java/awt/image/DataBufferInt.java b/libjava/classpath/java/awt/image/DataBufferInt.java new file mode 100644 index 000000000..db9d5bc30 --- /dev/null +++ b/libjava/classpath/java/awt/image/DataBufferInt.java @@ -0,0 +1,244 @@ +/* Copyright (C) 2000, 2002, 2005 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. */ + +/** + * A {@link DataBuffer} that uses an array of <code>int</code> primitives + * to represent each of its banks. + * + * @author Rolf W. Rasmussen (rolfwr@ii.uib.no) + */ +public final class DataBufferInt extends DataBuffer +{ + private int[] data; + private int[][] bankData; + + /** + * Creates a new data buffer with a single data bank containing the + * specified number of <code>int</code> elements. + * + * @param size the number of elements in the data bank. + */ + public DataBufferInt(int size) + { + super(TYPE_INT, size, 1, 0); + bankData = new int[1][]; + data = new int[size]; + bankData[0] = data; + } + + /** + * Creates a new data buffer with the specified number of data banks, + * each containing the specified number of <code>int</code> elements. + * + * @param size the number of elements in the data bank. + * @param numBanks the number of data banks. + */ + public DataBufferInt(int size, int numBanks) + { + super(TYPE_INT, size, numBanks); + bankData = new int[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 DataBufferInt(int[] dataArray, int size) + { + super(TYPE_INT, size, 1, 0); + bankData = new int[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 DataBufferInt(int[] dataArray, int size, int offset) + { + super(TYPE_INT, size, 1, offset); + bankData = new int[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 DataBufferInt(int[][] dataArray, int size) + { + super(TYPE_INT, 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 DataBufferInt(int[][] dataArray, int size, int[] offsets) + { + super(TYPE_INT, size, dataArray.length, offsets); + bankData = dataArray; + data = bankData[0]; + } + + /** + * Returns the first data bank. + * + * @return The first data bank. + */ + public int[] getData() + { + return data; + } + + /** + * Returns a data bank. + * + * @param bank the bank index. + * @return A data bank. + */ + public int[] getData(int bank) + { + return bankData[bank]; + } + + /** + * Returns the array underlying this <code>DataBuffer</code>. + * + * @return The data banks. + */ + public int[][] getBankData() + { + return bankData; + } + + /** + * Returns an element from the first data bank. The <code>offset</code> is + * added to the specified index 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 <code>offset</code> + * is added to the specified index 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) + { + // get unsigned int as int + 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] = 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]] = val; + } +} |