/*
* Copyright 2001 Sun Microsystems, Inc. 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. Sun designates this
* particular file as subject to the "Classpath" exception as provided
* by Sun 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 Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
* CA 95054 USA or visit www.sun.com if you need additional information or
* have any questions.
*/
package ae.com.sun.imageio.plugins.jpeg;
import ae.javax.imageio.metadata.IIOInvalidTreeException;
import ae.javax.imageio.metadata.IIOMetadataNode;
import ae.javax.imageio.stream.ImageOutputStream;
import java.io.IOException;
import org.w3c.dom.Node;
/**
* A DRI (Define Restart Interval) marker segment.
*/
class DRIMarkerSegment extends MarkerSegment {
/**
* Restart interval, or 0 if none is specified.
*/
int restartInterval = 0;
DRIMarkerSegment(JPEGBuffer buffer)
throws IOException {
super(buffer);
restartInterval = (buffer.buf[buffer.bufPtr++] & 0xff) << 8;
restartInterval |= buffer.buf[buffer.bufPtr++] & 0xff;
buffer.bufAvail -= length;
}
DRIMarkerSegment(Node node) throws IIOInvalidTreeException {
super(JPEG.DRI);
updateFromNativeNode(node, true);
}
IIOMetadataNode getNativeNode() {
IIOMetadataNode node = new IIOMetadataNode("dri");
node.setAttribute("interval", Integer.toString(restartInterval));
return node;
}
void updateFromNativeNode(Node node, boolean fromScratch)
throws IIOInvalidTreeException {
restartInterval = getAttributeValue(node, null, "interval",
0, 65535, true);
}
/**
* Writes the data for this segment to the stream in
* valid JPEG format.
*/
void write(ImageOutputStream ios) throws IOException {
// We don't write DRI segments; the IJG library does.
}
void print() {
printTag("DRI");
System.out.println("Interval: "
+ Integer.toString(restartInterval));
}
}