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/*
* 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.taginfos;
import java.nio.ByteOrder;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;
import org.apache.commons.imaging.ImageReadException;
import org.apache.commons.imaging.ImageWriteException;
import org.apache.commons.imaging.formats.tiff.TiffField;
import org.apache.commons.imaging.formats.tiff.constants.TiffDirectoryType;
import org.apache.commons.imaging.formats.tiff.fieldtypes.FieldType;
public class TagInfo {
public static final int LENGTH_UNKNOWN = -1;
public final String name;
public final int tag;
public final List dataTypes;
public final int length;
public final TiffDirectoryType directoryType;
private final boolean isOffset;
public TagInfo(final String name, final int tag, final FieldType dataType, final int length,
final TiffDirectoryType exifDirectory) {
this(name, tag, Arrays.asList(dataType), length, exifDirectory);
}
public TagInfo(final String name, final int tag, final FieldType dataType, final int length,
final TiffDirectoryType exifDirectory, final boolean isOffset) {
this(name, tag, Arrays.asList(dataType), length, exifDirectory,
isOffset);
}
public TagInfo(final String name, final int tag, final FieldType dataType, final int length) {
this(name, tag, Arrays.asList(dataType), length,
TiffDirectoryType.EXIF_DIRECTORY_UNKNOWN);
}
public TagInfo(final String name, final int tag, final FieldType dataType) {
this(name, tag, dataType, LENGTH_UNKNOWN,
TiffDirectoryType.EXIF_DIRECTORY_UNKNOWN);
}
public TagInfo(final String name, final int tag, final List dataTypes, final int length,
final TiffDirectoryType exifDirectory) {
this(name, tag, dataTypes, length, exifDirectory, false);
}
public TagInfo(final String name, final int tag, final List dataTypes, final int length,
final TiffDirectoryType exifDirectory, final boolean isOffset) {
this.name = name;
this.tag = tag;
this.dataTypes = Collections.unmodifiableList(new ArrayList<>(
dataTypes));
this.length = length;
this.directoryType = exifDirectory;
this.isOffset = isOffset;
}
/**
*
* @param entry the TIFF field whose value to return
* @return the value of the TIFF field
* @throws ImageReadException thrown by subclasses
*/
public Object getValue(final TiffField entry) throws ImageReadException {
return entry.getFieldType().getValue(entry);
}
public byte[] encodeValue(final FieldType fieldType, final Object value, final ByteOrder byteOrder)
throws ImageWriteException {
return fieldType.writeData(value, byteOrder);
}
public String getDescription() {
return tag + " (0x" + Integer.toHexString(tag) + ": " + name + "): ";
}
@Override
public String toString() {
return "[TagInfo. tag: " + tag + " (0x" + Integer.toHexString(tag)
+ ", name: " + name + "]";
}
public boolean isOffset() {
return isOffset;
}
public boolean isText() {
return false;
}
}