/*
* Copyright (c) 2001, Oracle and/or its affiliates. All rights reserved.
* DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
*
* This code is free software; you can redistribute it and/or modify it
* under the terms of the GNU General Public License version 2 only, as
* published by the Free Software Foundation. Oracle designates this
* particular file as subject to the "Classpath" exception as provided
* by Oracle in the LICENSE file that accompanied this code.
*
* This code 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
* version 2 for more details (a copy is included in the LICENSE file that
* accompanied this code).
*
* You should have received a copy of the GNU General Public License version
* 2 along with this work; if not, write to the Free Software Foundation,
* Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
* or visit www.oracle.com if you need additional information or have any
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*/
package com.sun.imageio.plugins.jpeg;
import javax.imageio.IIOException;
import javax.imageio.metadata.IIOInvalidTreeException;
import javax.imageio.metadata.IIOMetadataNode;
import javax.imageio.stream.ImageOutputStream;
import java.io.IOException;
import org.w3c.dom.Node;
import org.w3c.dom.NamedNodeMap;
/**
* An Adobe APP14 (Application-Specific) marker segment.
*/
class AdobeMarkerSegment extends MarkerSegment {
int version;
int flags0;
int flags1;
int transform;
private static final int ID_SIZE = 5;
AdobeMarkerSegment(int transform) {
super(JPEG.APP14);
version = 101;
flags0 = 0;
flags1 = 0;
this.transform = transform;
}
AdobeMarkerSegment(JPEGBuffer buffer) throws IOException {
super(buffer);
buffer.bufPtr += ID_SIZE; // Skip the id
version = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
version |= buffer.buf[buffer.bufPtr++] & 0xff;
flags0 = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
flags0 |= buffer.buf[buffer.bufPtr++] & 0xff;
flags1 = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
flags1 |= buffer.buf[buffer.bufPtr++] & 0xff;
transform = buffer.buf[buffer.bufPtr++] & 0xff;
buffer.bufAvail -= length;
}
AdobeMarkerSegment(Node node) throws IIOInvalidTreeException {
this(0); // default transform will be changed
updateFromNativeNode(node, true);
}
IIOMetadataNode getNativeNode() {
IIOMetadataNode node = new IIOMetadataNode("app14Adobe");
node.setAttribute("version", Integer.toString(version));
node.setAttribute("flags0", Integer.toString(flags0));
node.setAttribute("flags1", Integer.toString(flags1));
node.setAttribute("transform", Integer.toString(transform));
return node;
}
void updateFromNativeNode(Node node, boolean fromScratch)
throws IIOInvalidTreeException {
// Only the transform is required
NamedNodeMap attrs = node.getAttributes();
transform = getAttributeValue(node, attrs, "transform", 0, 2, true);
int count = attrs.getLength();
if (count > 4) {
throw new IIOInvalidTreeException
("Adobe APP14 node cannot have > 4 attributes", node);
}
if (count > 1) {
int value = getAttributeValue(node, attrs, "version",
100, 255, false);
version = (value != -1) ? value : version;
value = getAttributeValue(node, attrs, "flags0", 0, 65535, false);
flags0 = (value != -1) ? value : flags0;
value = getAttributeValue(node, attrs, "flags1", 0, 65535, false);
flags1 = (value != -1) ? value : flags1;
}
}
/**
* Writes the data for this segment to the stream in
* valid JPEG format.
*/
void write(ImageOutputStream ios) throws IOException {
length = 14;
writeTag(ios);
byte [] id = {0x41, 0x64, 0x6F, 0x62, 0x65};
ios.write(id);
write2bytes(ios, version);
write2bytes(ios, flags0);
write2bytes(ios, flags1);
ios.write(transform);
}
static void writeAdobeSegment(ImageOutputStream ios, int transform)
/**代码未完, 请加载全部代码(NowJava.com).**/