001: /*
002: * $RCSfile: EXIFParentTIFFTagSet.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: 1.4 $
042: * $Date: 2006/04/28 01:01:59 $
043: * $State: Exp $
044: */
045: package com.sun.media.imageio.plugins.tiff;
046:
047: import java.util.ArrayList;
048: import java.util.List;
049:
050: /**
051: * A class containing the TIFF tags used to reference the EXIF and GPS IFDs.
052: * This tag set should be added to the root tag set by means of the
053: * {@link TIFFImageReadParam#addAllowedTagSet(TIFFTagSet)
054: * <code>TIFFImageReadParam.addAllowedTagSet</code>} method if EXIF
055: * support is desired.
056: */
057: public class EXIFParentTIFFTagSet extends TIFFTagSet {
058:
059: private static EXIFParentTIFFTagSet theInstance = null;
060:
061: // 34665 - EXIF IFD Pointer (LONG/1)
062: /** Tag pointing to the EXIF IFD (type LONG). */
063: public static final int TAG_EXIF_IFD_POINTER = 34665;
064:
065: /** Tag pointing to a GPS info IFD (type LONG). */
066: public static final int TAG_GPS_INFO_IFD_POINTER = 34853;
067:
068: // To be inserted into parent (root) TIFFTagSet
069: static class EXIFIFDPointer extends TIFFTag {
070:
071: public EXIFIFDPointer() {
072: super ("EXIFIFDPointer", TAG_EXIF_IFD_POINTER,
073: 1 << TIFFTag.TIFF_LONG, EXIFTIFFTagSet
074: .getInstance());
075: }
076: }
077:
078: // To be inserted into parent (root) TIFFTagSet
079: static class GPSInfoIFDPointer extends TIFFTag {
080:
081: public GPSInfoIFDPointer() {
082: super ("GPSInfoIFDPointer", TAG_GPS_INFO_IFD_POINTER,
083: 1 << TIFFTag.TIFF_LONG, EXIFGPSTagSet.getInstance());
084: }
085: }
086:
087: private static List tags;
088:
089: private static void initTags() {
090: tags = new ArrayList(1);
091: tags.add(new EXIFParentTIFFTagSet.EXIFIFDPointer());
092: tags.add(new EXIFParentTIFFTagSet.GPSInfoIFDPointer());
093: }
094:
095: private EXIFParentTIFFTagSet() {
096: super (tags);
097: }
098:
099: /**
100: * Returns a shared instance of an <code>EXIFParentTIFFTagSet</code>.
101: *
102: * @return an <code>EXIFParentTIFFTagSet</code> instance.
103: */
104: public synchronized static EXIFParentTIFFTagSet getInstance() {
105: if (theInstance == null) {
106: initTags();
107: theInstance = new EXIFParentTIFFTagSet();
108: tags = null;
109: }
110: return theInstance;
111: }
112: }
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