    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 applications to define parameters for reading and writing TIFF files.
    023 */
    024public final class TiffConstants {
    025
    026    public static final ByteOrder DEFAULT_TIFF_BYTE_ORDER = ByteOrder.LITTLE_ENDIAN;
    027
    028    public static final int VERSION_STANDARD = 42;
    029    public static final int VERSION_BIG = 43;
    030
    031    public static final int HEADER_SIZE = 8;
    032    public static final int DIRECTORY_HEADER_LENGTH = 2;
    033    public static final int DIRECTORY_FOOTER_LENGTH = 4;
    034    public static final int ENTRY_LENGTH = 12;
    035    public static final int ENTRY_MAX_VALUE_LENGTH = 4;
    036    public static final int ENTRY_LENGTH_BIG = 12;
    037    public static final int ENTRY_MAX_VALUE_LENGTH_BIG = 8;
    038
    039    public static final int COMPRESSION_UNCOMPRESSED_1 = 1;
    040    public static final int COMPRESSION_UNCOMPRESSED = COMPRESSION_UNCOMPRESSED_1;
    041    public static final int COMPRESSION_CCITT_1D = 2;
    042    public static final int COMPRESSION_CCITT_GROUP_3 = 3;
    043    public static final int COMPRESSION_CCITT_GROUP_4 = 4;
    044    public static final int COMPRESSION_LZW = 5;
    045    public static final int COMPRESSION_JPEG_OBSOLETE = 6;
    046    public static final int COMPRESSION_JPEG = 7;
    047    public static final int COMPRESSION_UNCOMPRESSED_2 = 32771;
    048    public static final int COMPRESSION_PACKBITS = 32773;
    049    public static final int COMPRESSION_DEFLATE_PKZIP = 32946;
    050    public static final int COMPRESSION_DEFLATE_ADOBE = 8;
    051
    052    public static final int FLAG_T4_OPTIONS_2D = 1;
    053    public static final int FLAG_T4_OPTIONS_UNCOMPRESSED_MODE = 2;
    054    public static final int FLAG_T4_OPTIONS_FILL = 4;
    055    public static final int FLAG_T6_OPTIONS_UNCOMPRESSED_MODE = 2;
    056
    057    /**
    058     * Specifies a larger strip-size to be used for compression. This setting generally produces smaller output files, but requires a slightly longer processing
    059     * time. Used in conjunction with the PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
    060     */
    061    public static final int LZW_COMPRESSION_BLOCK_SIZE_MEDIUM = 32768;
    062
    063    /**
    064     * Specifies a larger strip-size to be used for compression. This setting generally produces smaller output files, but requires a slightly longer processing
    065     * time. Used in conjunction with the PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
    066     */
    067    public static final int LZW_COMPRESSION_BLOCK_SIZE_LARGE = 65536;
    068
    069    private TiffConstants() {
    070    }
    071}