136 lines · 4.9 KB · Java
RawDownload
/* * 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 * questions. */ 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)        throws IOException {        (new AdobeMarkerSegment(transform)).write(ios);    }     void print () {        printTag("Adobe APP14");        System.out.print("Version: ");        System.out.println(version);        System.out.print("Flags0: 0x");        System.out.println(Integer.toHexString(flags0));        System.out.print("Flags1: 0x");        System.out.println(Integer.toHexString(flags1));        System.out.print("Transform: ");        System.out.println(transform);    }}