Author: ruschein
Date: 2010-02-02 13:30:54 -0800 (Tue, 02 Feb 2010)
New Revision: 19145
Added:
csplugins/trunk/util.compression/src/org/cytoscape/util/compression/BufferedImageCompressor.java
Log:
Complete, untested initial implementation.
Added:
csplugins/trunk/util.compression/src/org/cytoscape/util/compression/BufferedImageCompressor.java
===================================================================
---
csplugins/trunk/util.compression/src/org/cytoscape/util/compression/BufferedImageCompressor.java
(rev 0)
+++
csplugins/trunk/util.compression/src/org/cytoscape/util/compression/BufferedImageCompressor.java
2010-02-02 21:30:54 UTC (rev 19145)
@@ -0,0 +1,68 @@
+/**
+ * @author ruschein
+ */
+/*
+ Copyright (c) 2010, The Cytoscape Consortium (www.cytoscape.org)
+
+ This library is free software; you can redistribute it and/or modify it
+ under the terms of the GNU Lesser General Public License as published
+ by the Free Software Foundation; either version 2.1 of the License, or
+ any later version.
+
+ This library 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. The software and
+ documentation provided hereunder is on an "as is" basis, and the
+ Institute for Systems Biology and the Whitehead Institute
+ have no obligations to provide maintenance, support,
+ updates, enhancements or modifications. In no event shall the
+ Institute for Systems Biology and the Whitehead Institute
+ be liable to any party for direct, indirect, special,
+ incidental or consequential damages, including lost profits, arising
+ out of the use of this software and its documentation, even if the
+ Institute for Systems Biology and the Whitehead Institute
+ have been advised of the possibility of such damage. See
+ the GNU Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public License
+ along with this library; if not, write to the Free Software Foundation,
+ Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
+*/
+package org.cytoscape.util.compression;
+
+
+import java.awt.image.BufferedImage;
+import java.awt.image.DataBuffer;
+import java.awt.image.DataBufferInt;
+import java.awt.image.Raster;
+import java.io.ByteArrayOutputStream;
+
+
+public class BufferedImageCompressor {
+ static public int[] compress(final BufferedImage image) throws
IllegalStateException {
+ final int[] imageAsIntArray;
+ if (image.getRaster().getDataBuffer() instanceof DataBufferInt)
{
+ final DataBufferInt dataBuffer =
(DataBufferInt)image.getRaster().getDataBuffer();
+ imageAsIntArray = dataBuffer.getData();
+ }
+ else
+ throw new IllegalStateException("image has an unknown
internal representation!");
+
+ return (new RLEIntCompressor()).compress(imageAsIntArray);
+ }
+
+ static public BufferedImage expand(final int[] compressedImage, final
int width, final int height) throws IllegalStateException {
+ final int[] imageAsIntArray = (new
RLEIntCompressor()).expand(compressedImage);
+
+ final BufferedImage image = new BufferedImage(width, height,
BufferedImage.TYPE_INT_ARGB_PRE);
+ if (image.getRaster().getDataBuffer() instanceof DataBufferInt)
{
+ final DataBufferInt dataBuffer =
(DataBufferInt)image.getRaster().getDataBuffer();
+ for (int i = 0; i < imageAsIntArray.length; ++i)
+ dataBuffer.setElem(i, imageAsIntArray[i]);
+ }
+ else
+ throw new IllegalStateException("image has an unknown
internal representation!");
+
+ return image;
+ }
+}
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