/*
* 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.ImageWriteException;
import org.apache.commons.imaging.common.ByteConversions;
import org.apache.commons.imaging.common.RationalNumber;
import org.apache.commons.imaging.formats.tiff.TiffField;
public class FieldTypeRational extends FieldType {
public FieldTypeRational(final int type, final String name) {
super(type, name, 8);
}
@Override
public Object getValue(final TiffField entry) {
final byte[] bytes = entry.getByteArrayValue();
if (entry.getCount() == 1) {
return ByteConversions.toRational(bytes,
entry.getByteOrder());
}
return ByteConversions.toRationals(bytes, entry.getByteOrder());
}
@Override
public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImageWriteException {
if (o instanceof RationalNumber) {
return ByteConversions.toBytes((RationalNumber) o, byteOrder);
} else if (o instanceof RationalNumber[]) {
return ByteConversions.toBytes((RationalNumber[]) o, byteOrder);
} else if (o instanceof Number) {
final Number number = (Number) o;
final RationalNumber rationalNumber = RationalNumber.valueOf(number.doubleValue());
return ByteConversions.toBytes(rationalNumber, byteOrder);
} else if (o instanceof Number[]) {
final Number[] numbers = (Number[]) o;
final RationalNumber[] rationalNumbers = new RationalNumber[numbers.length];
for (int i = 0; i < numbers.length; i++) {
final Number number = numbers[i];
rationalNumbers[i] = RationalNumber.valueOf(number.doubleValue());
}
return ByteConversions.toBytes(rationalNumbers, byteOrder);
} else if (o instanceof double[]) {
final double[] numbers = (double[]) o;
final RationalNumber[] rationalNumbers = new RationalNumber[numbers.length];
for (int i = 0; i < numbers.length; i++) {
final double number = numbers[i];
rationalNumbers[i] = RationalNumber.valueOf(number);
}
return ByteConversions.toBytes(rationalNumbers, byteOrder);
} else {
throw new ImageWriteException("Invalid data", o);
}
}
}