| /* |
| * Copyright (c) 2005, 2016, 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 javax.imageio.plugins.tiff; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| /** |
| * A class containing the TIFF tags used to reference the Exif and GPS IFDs. |
| * This tag set should be added to the root tag set by means of the |
| * {@link TIFFImageReadParam#addAllowedTagSet(TIFFTagSet) |
| * TIFFImageReadParam.addAllowedTagSet} method if Exif |
| * support is desired. |
| * |
| * @since 9 |
| */ |
| public final class ExifParentTIFFTagSet extends TIFFTagSet { |
| |
| private static ExifParentTIFFTagSet theInstance = null; |
| |
| // 34665 - Exif IFD Pointer (LONG/1) |
| /** Tag pointing to the Exif IFD (type LONG). */ |
| public static final int TAG_EXIF_IFD_POINTER = 34665; |
| |
| /** Tag pointing to a GPS info IFD (type LONG). */ |
| public static final int TAG_GPS_INFO_IFD_POINTER = 34853; |
| |
| // To be inserted into parent (root) TIFFTagSet |
| static class ExifIFDPointer extends TIFFTag { |
| |
| public ExifIFDPointer() { |
| super("ExifIFDPointer", |
| TAG_EXIF_IFD_POINTER, |
| ExifTIFFTagSet.getInstance()); |
| } |
| } |
| |
| // To be inserted into parent (root) TIFFTagSet |
| static class GPSInfoIFDPointer extends TIFFTag { |
| |
| public GPSInfoIFDPointer() { |
| super("GPSInfoIFDPointer", |
| TAG_GPS_INFO_IFD_POINTER, |
| ExifGPSTagSet.getInstance()); |
| } |
| } |
| |
| private static List<TIFFTag> tags; |
| |
| private static void initTags() { |
| tags = new ArrayList<TIFFTag>(1); |
| tags.add(new ExifParentTIFFTagSet.ExifIFDPointer()); |
| tags.add(new ExifParentTIFFTagSet.GPSInfoIFDPointer()); |
| } |
| |
| private ExifParentTIFFTagSet() { |
| super(tags); |
| } |
| |
| /** |
| * Returns a shared instance of an {@code ExifParentTIFFTagSet}. |
| * |
| * @return an {@code ExifParentTIFFTagSet} instance. |
| */ |
| public synchronized static ExifParentTIFFTagSet getInstance() { |
| if (theInstance == null) { |
| initTags(); |
| theInstance = new ExifParentTIFFTagSet(); |
| tags = null; |
| } |
| return theInstance; |
| } |
| } |