com.github.jaiimageio.jpeg2000.impl.ComponentMappingBox Maven / Gradle / Ivy
Go to download
Show more of this group Show more artifacts with this name
Show all versions of jai-imageio-jpeg2000 Show documentation
Show all versions of jai-imageio-jpeg2000 Show documentation
JPEG2000 support for Java Advanced Imaging Image I/O Tools API core.
This module is licensed under the [JJ2000 license](LICENSE.txt) and
is therefore NOT compatible with the GPL 3 license. It should be
compatible with the LGPL 2.1 license.
/*
* $RCSfile: ComponentMappingBox.java,v $
*
*
* Copyright (c) 2005 Sun Microsystems, Inc. All Rights Reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* - Redistribution of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - Redistribution in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* Neither the name of Sun Microsystems, Inc. or the names of
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* This software is provided "AS IS," without a warranty of any
* kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND
* WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
* EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL
* NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF
* USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
* DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR
* ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
* CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
* REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
* INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGES.
*
* You acknowledge that this software is not designed or intended for
* use in the design, construction, operation or maintenance of any
* nuclear facility.
*
* $Revision: 1.1 $
* $Date: 2005/02/11 05:01:32 $
* $State: Exp $
*/
package com.github.jaiimageio.jpeg2000.impl;
import javax.imageio.metadata.IIOInvalidTreeException;
import javax.imageio.metadata.IIOMetadataNode;
import org.w3c.dom.Node;
import org.w3c.dom.NodeList;
/** This class is defined to represent a Color Specification Box of JPEG JP2
* file format. A Channel Definition Box has a length, and a fixed type
* of "cmap". This box exists if and only is a PaletteBox exists. Its
* content defines the type LUT output components and their mapping to the
* color component.
*/
public class ComponentMappingBox extends Box {
/** The data elements. */
private short[] components;
private byte[] type;
private byte[] map;
/** Constructs a ComponentMappingBox from the provided
* content byte array.
*/
public ComponentMappingBox(byte[] data) {
super(8 + data.length, 0x636D6170, data);
}
/** Constructs a ComponentMappingBox from the provided
* component mapping.
*/
public ComponentMappingBox(short[] comp, byte[] t, byte[] m) {
super(8 + (comp.length << 2), 0x636D6170, null);
this.components = comp;
this.type = t;
this.map = m;
}
/** Constructs a ComponentMappingBox based on the provided
* org.w3c.dom.Node.
*/
public ComponentMappingBox(Node node) throws IIOInvalidTreeException {
super(node);
NodeList children = node.getChildNodes();
int len = children.getLength() / 3;
components = new short[len];
type = new byte[len];
map = new byte[len];
len *= 3;
int index = 0;
for (int i = 0; i < len; i++) {
Node child = children.item(i);
String name = child.getNodeName();
if ("Component".equals(name)) {
components[index] = Box.getShortElementValue(child);
}
if ("ComponentType".equals(name)) {
type[index] = Box.getByteElementValue(child);
}
if ("ComponentAssociation".equals(name)) {
map[index++] = Box.getByteElementValue(child);
}
}
}
/** Parse the component mapping from the provided content data array. */
protected void parse(byte[] data) {
int len = data.length / 4;
components = new short[len];
type = new byte[len];
map = new byte[len];
for (int i = 0, j = 0; i < len; i++) {
components[i] =
(short)(((data[j++] & 0xFF) << 8) | (data[j++] & 0xFF));
type[i] = data[j++];
map[i] = data[j++];
}
}
/** Creates an IIOMetadataNode from this component mapping
* box. The format of this node is defined in the XML dtd and xsd
* for the JP2 image file.
*/
public IIOMetadataNode getNativeNode() {
IIOMetadataNode node = new IIOMetadataNode(Box.getName(getType()));
setDefaultAttributes(node);
for (int i = 0; i < components.length; i++) {
IIOMetadataNode child = new IIOMetadataNode("Component");
Short obj = new Short(components[i]);
child.setUserObject(new Short(components[i]));
child.setNodeValue("" + components[i]);
node.appendChild(child);
child = new IIOMetadataNode("ComponentType");
child.setUserObject(new Byte(type[i]));
child.setNodeValue("" + type[i]);
node.appendChild(child);
child = new IIOMetadataNode("ComponentAssociation");
child.setUserObject(new Byte(map[i]));
child.setNodeValue("" + map[i]);
node.appendChild(child);
}
return node;
}
public short[] getComponent() {
return components;
}
public byte[] getComponentType() {
return type;
}
public byte[] getComponentAssociation() {
return map;
}
protected void compose() {
if (data != null)
return;
data = new byte[type.length << 2];
for (int i = 0, j = 0; i < type.length; i++) {
data[j++] = (byte)(components[i] >> 8);
data[j++] = (byte)(components[i] & 0xFF);
data[j++] = type[i];
data[j++] = map[i];
}
}
}