    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}