001/*
002 * Licensed to the Apache Software Foundation (ASF) under one or more
003 * contributor license agreements.  See the NOTICE file distributed with
004 * this work for additional information regarding copyright ownership.
005 * The ASF licenses this file to You under the Apache License, Version 2.0
006 * (the "License"); you may not use this file except in compliance with
007 * the License.  You may obtain a copy of the License at
008 *
009 *      http://www.apache.org/licenses/LICENSE-2.0
010 *
011 * Unless required by applicable law or agreed to in writing, software
012 * distributed under the License is distributed on an "AS IS" BASIS,
013 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
014 * See the License for the specific language governing permissions and
015 * limitations under the License.
016 */
017package org.apache.commons.imaging.formats.tiff.constants;
018
019import java.nio.ByteOrder;
020
021/**
022 * Defines constants for internal elements from TIFF files and for allowing
023 * applications to define parameters for reading and writing TIFF files.
024 */
025public final class TiffConstants {
026
027    public static final ByteOrder DEFAULT_TIFF_BYTE_ORDER = ByteOrder.LITTLE_ENDIAN;
028
029    public static final int TIFF_HEADER_SIZE = 8;
030    public static final int TIFF_DIRECTORY_HEADER_LENGTH = 2;
031    public static final int TIFF_DIRECTORY_FOOTER_LENGTH = 4;
032    public static final int TIFF_ENTRY_LENGTH = 12;
033    public static final int TIFF_ENTRY_MAX_VALUE_LENGTH = 4;
034
035    public static final int TIFF_COMPRESSION_UNCOMPRESSED_1 = 1;
036    public static final int TIFF_COMPRESSION_UNCOMPRESSED = TIFF_COMPRESSION_UNCOMPRESSED_1;
037    public static final int TIFF_COMPRESSION_CCITT_1D = 2;
038    public static final int TIFF_COMPRESSION_CCITT_GROUP_3 = 3;
039    public static final int TIFF_COMPRESSION_CCITT_GROUP_4 = 4;
040    public static final int TIFF_COMPRESSION_LZW = 5;
041    public static final int TIFF_COMPRESSION_JPEG = 6;
042    public static final int TIFF_COMPRESSION_UNCOMPRESSED_2 = 32771;
043    public static final int TIFF_COMPRESSION_PACKBITS = 32773;
044    public static final int TIFF_COMPRESSION_DEFLATE_PKZIP = 32946;
045    public static final int TIFF_COMPRESSION_DEFLATE_ADOBE = 8;
046
047    public static final int TIFF_FLAG_T4_OPTIONS_2D = 1;
048    public static final int TIFF_FLAG_T4_OPTIONS_UNCOMPRESSED_MODE = 2;
049    public static final int TIFF_FLAG_T4_OPTIONS_FILL = 4;
050    public static final int TIFF_FLAG_T6_OPTIONS_UNCOMPRESSED_MODE = 2;
051
052    /**
053     * Specifies a larger strip-size to be used for compression. This setting
054     * generally produces smaller output files, but requires a slightly longer
055     * processing time. Used in conjunction with the
056     * PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
057     */
058    public static final int TIFF_LZW_COMPRESSION_BLOCK_SIZE_MEDIUM = 32768;
059
060    /**
061     * Specifies a larger strip-size to be used for compression. This setting
062     * generally produces smaller output files, but requires a slightly longer
063     * processing time. Used in conjunction with the
064     * PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
065     */
066    public static final int TIFF_LZW_COMPRESSION_BLOCK_SIZE_LARGE = 65536;
067
068    private TiffConstants() {
069    }
070}