001/*
002 * $RCSfile: EXIFInteroperabilityTagSet.java,v $
003 *
004 * 
005 * Copyright (c) 2005 Sun Microsystems, Inc. All  Rights Reserved.
006 * 
007 * Redistribution and use in source and binary forms, with or without
008 * modification, are permitted provided that the following conditions
009 * are met: 
010 * 
011 * - Redistribution of source code must retain the above copyright 
012 *   notice, this  list of conditions and the following disclaimer.
013 * 
014 * - Redistribution in binary form must reproduce the above copyright
015 *   notice, this list of conditions and the following disclaimer in 
016 *   the documentation and/or other materials provided with the
017 *   distribution.
018 * 
019 * Neither the name of Sun Microsystems, Inc. or the names of 
020 * contributors may be used to endorse or promote products derived 
021 * from this software without specific prior written permission.
022 * 
023 * This software is provided "AS IS," without a warranty of any 
024 * kind. ALL EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND 
025 * WARRANTIES, INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, 
026 * FITNESS FOR A PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY
027 * EXCLUDED. SUN MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL 
028 * NOT BE LIABLE FOR ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF 
029 * USING, MODIFYING OR DISTRIBUTING THIS SOFTWARE OR ITS
030 * DERIVATIVES. IN NO EVENT WILL SUN OR ITS LICENSORS BE LIABLE FOR 
031 * ANY LOST REVENUE, PROFIT OR DATA, OR FOR DIRECT, INDIRECT, SPECIAL,
032 * CONSEQUENTIAL, INCIDENTAL OR PUNITIVE DAMAGES, HOWEVER CAUSED AND
033 * REGARDLESS OF THE THEORY OF LIABILITY, ARISING OUT OF THE USE OF OR
034 * INABILITY TO USE THIS SOFTWARE, EVEN IF SUN HAS BEEN ADVISED OF THE
035 * POSSIBILITY OF SUCH DAMAGES. 
036 * 
037 * You acknowledge that this software is not designed or intended for 
038 * use in the design, construction, operation or maintenance of any 
039 * nuclear facility. 
040 *
041 * $Revision: 1.1 $
042 * $Date: 2005/10/28 16:56:45 $
043 * $State: Exp $
044 */
045
046package com.github.jaiimageio.plugins.tiff;
047
048import java.util.ArrayList;
049import java.util.List;
050
051/**
052 * A class representing the tags found in an EXIF Interoperability IFD.
053 *
054 * @see EXIFTIFFTagSet
055 */
056public class EXIFInteroperabilityTagSet extends TIFFTagSet {
057    /**
058     * A tag indicating the identification of the Interoperability rule
059     * (type ASCII).
060     *
061     * @see #INTEROPERABILITY_INDEX_R98
062     * @see #INTEROPERABILITY_INDEX_THM
063     */
064    public static final int TAG_INTEROPERABILITY_INDEX = 1;
065
066    /**
067     * A value to be used with the "InteroperabilityIndex" tag. Indicates
068     * a file conforming to the R98 file specification of Recommended Exif
069     * Interoperability Rules (ExifR98) or to the DCF basic file stipulated
070     * by the Design Rule for Camera File System (type ASCII).
071     *
072     * @see #TAG_INTEROPERABILITY_INDEX
073     */
074    public static final String INTEROPERABILITY_INDEX_R98 = "R98";
075
076    /**
077     * A value to be used with the "InteroperabilityIndex" tag. Indicates
078     * a file conforming to the DCF thumbnail file stipulated by the Design
079     * rule for Camera File System (type ASCII).
080     *
081     * @see #TAG_INTEROPERABILITY_INDEX
082     */
083    public static final String INTEROPERABILITY_INDEX_THM = "THM";
084
085    private static EXIFInteroperabilityTagSet theInstance = null;
086
087    static class InteroperabilityIndex extends TIFFTag {
088
089        public InteroperabilityIndex() {
090            super("InteroperabilityIndex",
091                  TAG_INTEROPERABILITY_INDEX,
092                  1 << TIFFTag.TIFF_ASCII);
093        }
094    }
095
096    private static List tags;
097
098    private static void initTags() {
099        tags = new ArrayList(42);
100
101        tags.add(new EXIFInteroperabilityTagSet.InteroperabilityIndex());
102    }
103
104    private EXIFInteroperabilityTagSet() {
105        super(tags);
106    }
107
108    /**
109     * Returns the shared instance of
110     * <code>EXIFInteroperabilityTagSet</code>.
111     *
112     * @return the <code>EXIFInteroperabilityTagSet</code> instance.
113     */
114    public synchronized static EXIFInteroperabilityTagSet getInstance() {
115        if (theInstance == null) {
116            initTags();
117            theInstance = new EXIFInteroperabilityTagSet();
118            tags = null;
119        }
120        return theInstance;
121    }
122}