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1   /*
2    * Licensed to the Apache Software Foundation (ASF) under one or more
3    * contributor license agreements.  See the NOTICE file distributed with
4    * this work for additional information regarding copyright ownership.
5    * The ASF licenses this file to You under the Apache License, Version 2.0
6    * (the "License"); you may not use this file except in compliance with
7    * the License.  You may obtain a copy of the License at
8    *
9    *      http://www.apache.org/licenses/LICENSE-2.0
10   *
11   * Unless required by applicable law or agreed to in writing, software
12   * distributed under the License is distributed on an "AS IS" BASIS,
13   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
14   * See the License for the specific language governing permissions and
15   * limitations under the License.
16   */
17  package org.apache.commons.imaging.formats.tiff.constants;
18  
19  import java.nio.ByteOrder;
20  
21  /**
22   * Defines constants for internal elements from TIFF files and for allowing applications to define parameters for reading and writing TIFF files.
23   */
24  public final class TiffConstants {
25  
26      public static final ByteOrder DEFAULT_TIFF_BYTE_ORDER = ByteOrder.LITTLE_ENDIAN;
27  
28      public static final int TIFF_VERSION_STANDARD = 42;
29      public static final int TIFF_VERSION_BIG = 43;
30  
31      public static final int TIFF_HEADER_SIZE = 8;
32      public static final int TIFF_DIRECTORY_HEADER_LENGTH = 2;
33      public static final int TIFF_DIRECTORY_FOOTER_LENGTH = 4;
34      public static final int TIFF_ENTRY_LENGTH = 12;
35      public static final int TIFF_ENTRY_MAX_VALUE_LENGTH = 4;
36      public static final int TIFF_ENTRY_LENGTH_BIG = 12;
37      public static final int TIFF_ENTRY_MAX_VALUE_LENGTH_BIG = 8;
38  
39      public static final int TIFF_COMPRESSION_UNCOMPRESSED_1 = 1;
40      public static final int TIFF_COMPRESSION_UNCOMPRESSED = TIFF_COMPRESSION_UNCOMPRESSED_1;
41      public static final int TIFF_COMPRESSION_CCITT_1D = 2;
42      public static final int TIFF_COMPRESSION_CCITT_GROUP_3 = 3;
43      public static final int TIFF_COMPRESSION_CCITT_GROUP_4 = 4;
44      public static final int TIFF_COMPRESSION_LZW = 5;
45      public static final int TIFF_COMPRESSION_JPEG_OBSOLETE = 6;
46      public static final int TIFF_COMPRESSION_JPEG = 7;
47      public static final int TIFF_COMPRESSION_UNCOMPRESSED_2 = 32771;
48      public static final int TIFF_COMPRESSION_PACKBITS = 32773;
49      public static final int TIFF_COMPRESSION_DEFLATE_PKZIP = 32946;
50      public static final int TIFF_COMPRESSION_DEFLATE_ADOBE = 8;
51  
52      public static final int TIFF_FLAG_T4_OPTIONS_2D = 1;
53      public static final int TIFF_FLAG_T4_OPTIONS_UNCOMPRESSED_MODE = 2;
54      public static final int TIFF_FLAG_T4_OPTIONS_FILL = 4;
55      public static final int TIFF_FLAG_T6_OPTIONS_UNCOMPRESSED_MODE = 2;
56  
57      /**
58       * Specifies a larger strip-size to be used for compression. This setting generally produces smaller output files, but requires a slightly longer processing
59       * time. Used in conjunction with the PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
60       */
61      public static final int TIFF_LZW_COMPRESSION_BLOCK_SIZE_MEDIUM = 32768;
62  
63      /**
64       * Specifies a larger strip-size to be used for compression. This setting generally produces smaller output files, but requires a slightly longer processing
65       * time. Used in conjunction with the PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
66       */
67      public static final int TIFF_LZW_COMPRESSION_BLOCK_SIZE_LARGE = 65536;
68  
69      private TiffConstants() {
70      }
71  }