FieldTypeLong8.java
/*
* 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.fieldtypes;
import java.nio.ByteOrder;
import org.apache.commons.imaging.ImagingException;
import org.apache.commons.imaging.common.Allocator;
import org.apache.commons.imaging.common.ByteConversions;
import org.apache.commons.imaging.formats.tiff.TiffField;
/**
* Provides an implementation of the 8-byte integer field type specified by the BigTIFF extensions to the TIFF format.
*/
public class FieldTypeLong8 extends AbstractFieldType {
public FieldTypeLong8(final int type, final String name) {
super(type, name, 8);
}
/**
* Gets the value(s) for this field in the form of an array of long integers.
*
* @param entry the TIFF field as obtained from the source file.
* @return a valid, potentially empty array of Java long integers.
*/
@Override
public Object getValue(final TiffField entry) {
final byte[] bytes = entry.getByteArrayValue();
if (entry.getCount() == 1) {
return ByteConversions.toInt(bytes, entry.getByteOrder());
}
return ByteConversions.toLongs(bytes, entry.getByteOrder());
}
@Override
public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImagingException {
if (o instanceof Integer) {
return ByteConversions.toBytes((Integer) o, byteOrder);
}
if (o instanceof int[]) {
final int[] numbers = (int[]) o;
return ByteConversions.toBytes(numbers, byteOrder);
}
if (!(o instanceof Integer[])) {
throw new ImagingException("Invalid data", o);
}
final Integer[] numbers = (Integer[]) o;
final int[] values = Allocator.intArray(numbers.length);
System.arraycopy(numbers, 0, values, 0, values.length);
return ByteConversions.toBytes(values, byteOrder);
}
}