1 /*

     2  * Copyright (c) 2005, 2015, Oracle and/or its affiliates. All rights reserved.

     3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

     4  *

     5  * This code is free software; you can redistribute it and/or modify it

     6  * under the terms of the GNU General Public License version 2 only, as

     7  * published by the Free Software Foundation.  Oracle designates this

     8  * particular file as subject to the "Classpath" exception as provided

     9  * by Oracle in the LICENSE file that accompanied this code.

    10  *

    11  * This code is distributed in the hope that it will be useful, but WITHOUT

    12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

    13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

    14  * version 2 for more details (a copy is included in the LICENSE file that

    15  * accompanied this code).

    16  *

    17  * You should have received a copy of the GNU General Public License version

    18  * 2 along with this work; if not, write to the Free Software Foundation,

    19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

    20  *

    21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

    22  * or visit www.oracle.com if you need additional information or have any

    23  * questions.

    24  */

    25 

    26 package javax.imageio.plugins.tiff;

    27 

    28 import java.util.ArrayList;

    29 import java.util.List;

    30 

    31 /**

    32  * A class representing the tags found in an Exif Interoperability IFD.

    33  *

    34  * @since 1.9

    35  * @see   ExifTIFFTagSet

    36  */

    37 public class ExifInteroperabilityTagSet extends TIFFTagSet {

    38     /**

    39      * A tag indicating the identification of the Interoperability rule

    40      * (type ASCII).

    41      *

    42      * @see #INTEROPERABILITY_INDEX_R98

    43      * @see #INTEROPERABILITY_INDEX_THM

    44      */

    45     public static final int TAG_INTEROPERABILITY_INDEX = 1;

    46 

    47     /**

    48      * A value to be used with the "InteroperabilityIndex" tag. Indicates

    49      * a file conforming to the R98 file specification of Recommended Exif

    50      * Interoperability Rules (ExifR98) or to the DCF basic file stipulated

    51      * by the Design Rule for Camera File System (type ASCII).

    52      *

    53      * @see #TAG_INTEROPERABILITY_INDEX

    54      */

    55     public static final String INTEROPERABILITY_INDEX_R98 = "R98";

    56 

    57     /**

    58      * A value to be used with the "InteroperabilityIndex" tag. Indicates

    59      * a file conforming to the DCF thumbnail file stipulated by the Design

    60      * rule for Camera File System (type ASCII).

    61      *

    62      * @see #TAG_INTEROPERABILITY_INDEX

    63      */

    64     public static final String INTEROPERABILITY_INDEX_THM = "THM";

    65 

    66     private static ExifInteroperabilityTagSet theInstance = null;

    67 

    68     static class InteroperabilityIndex extends TIFFTag {

    69 

    70         public InteroperabilityIndex() {

    71             super("InteroperabilityIndex",

    72                   TAG_INTEROPERABILITY_INDEX,

    73                   1 << TIFFTag.TIFF_ASCII);

    74         }

    75     }

    76 

    77     private static List<TIFFTag> tags;

    78 

    79     private static void initTags() {

    80         tags = new ArrayList<TIFFTag>(42);

    81 

    82         tags.add(new ExifInteroperabilityTagSet.InteroperabilityIndex());

    83     }

    84 

    85     private ExifInteroperabilityTagSet() {

    86         super(tags);

    87     }

    88 

    89     /**

    90      * Returns the shared instance of

    91      * <code>ExifInteroperabilityTagSet</code>.

    92      *

    93      * @return the <code>ExifInteroperabilityTagSet</code> instance.

    94      */

    95     public synchronized static ExifInteroperabilityTagSet getInstance() {

    96         if (theInstance == null) {

    97             initTags();

    98             theInstance = new ExifInteroperabilityTagSet();

    99             tags = null;

   100         }

   101         return theInstance;

   102     }

   103 }