org.apache.commons.imaging.formats.tiff.constants.TiffConstants Maven / Gradle / Ivy
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.formats.tiff.constants;
import java.nio.ByteOrder;
public final class TiffConstants {
public static final ByteOrder DEFAULT_TIFF_BYTE_ORDER = ByteOrder.LITTLE_ENDIAN;
public static final int TIFF_HEADER_SIZE = 8;
public static final int TIFF_DIRECTORY_HEADER_LENGTH = 2;
public static final int TIFF_DIRECTORY_FOOTER_LENGTH = 4;
public static final int TIFF_ENTRY_LENGTH = 12;
public static final int TIFF_ENTRY_MAX_VALUE_LENGTH = 4;
public static final int TIFF_COMPRESSION_UNCOMPRESSED_1 = 1;
public static final int TIFF_COMPRESSION_UNCOMPRESSED = TIFF_COMPRESSION_UNCOMPRESSED_1;
public static final int TIFF_COMPRESSION_CCITT_1D = 2;
public static final int TIFF_COMPRESSION_CCITT_GROUP_3 = 3;
public static final int TIFF_COMPRESSION_CCITT_GROUP_4 = 4;
public static final int TIFF_COMPRESSION_LZW = 5;
public static final int TIFF_COMPRESSION_JPEG = 6;
public static final int TIFF_COMPRESSION_UNCOMPRESSED_2 = 32771;
public static final int TIFF_COMPRESSION_PACKBITS = 32773;
/**
* Parameter key. Used in write operations to indicate the desired
* T.4 options to use when using TIFF_COMPRESSION_CCITT_GROUP_3.
*
* Valid values: any Integer containing a mixture of the
* TIFF_FLAG_T4_OPTIONS_2D, TIFF_FLAG_T4_OPTIONS_UNCOMPRESSED_MODE,
* and TIFF_FLAG_T4_OPTIONS_FILL flags.
*/
public static final String PARAM_KEY_T4_OPTIONS = "T4_OPTIONS";
/**
* Parameter key. Used in write operations to indicate the desired
* T.6 options to use when using TIFF_COMPRESSION_CCITT_GROUP_4.
*
* Valid values: any Integer containing either zero or
* TIFF_FLAG_T6_OPTIONS_UNCOMPRESSED_MODE.
*/
public static final String PARAM_KEY_T6_OPTIONS = "T6_OPTIONS";
public static final int TIFF_FLAG_T4_OPTIONS_2D = 1;
public static final int TIFF_FLAG_T4_OPTIONS_UNCOMPRESSED_MODE = 2;
public static final int TIFF_FLAG_T4_OPTIONS_FILL = 4;
public static final int TIFF_FLAG_T6_OPTIONS_UNCOMPRESSED_MODE = 2;
public static final String PARAM_KEY_SUBIMAGE_X = "SUBIMAGE_X";
public static final String PARAM_KEY_SUBIMAGE_Y = "SUBIMAGE_Y";
public static final String PARAM_KEY_SUBIMAGE_WIDTH = "SUBIMAGE_WIDTH";
public static final String PARAM_KEY_SUBIMAGE_HEIGHT = "SUBIMAGE_HEIGHT";
/**
* Specifies the amount of memory in bytes to be used for a strip
* or tile size when employing LZW compression. The default is
* 8000 (roughly 8K). Minimum value is 8000.
*/
public static final String PARAM_KEY_LZW_COMPRESSION_BLOCK_SIZE =
"PARAM_KEY_LZW_COMPRESSION_BLOCK_SIZE";
/**
* Specifies a larger strip-size to be used for compression. This setting
* generally produces smaller output files, but requires a slightly longer
* processing time. Used in conjunction with the
* PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
*/
public static final int TIFF_LZW_COMPRESSION_BLOCK_SIZE_MEDIUM = 32768;
/**
* Specifies a larger strip-size to be used for compression. This setting
* generally produces smaller output files, but requires a slightly longer
* processing time. Used in conjunction with the
* PARAM_KEY_LZW_COMPRESSION_STRIP_SIZE
*/
public static final int TIFF_LZW_COMPRESSION_BLOCK_SIZE_LARGE = 65536;
private TiffConstants() {
}
}