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.fieldtypes;
018
019import java.nio.ByteOrder;
020
021import org.apache.commons.imaging.ImageWriteException;
022import org.apache.commons.imaging.common.ByteConversions;
023import org.apache.commons.imaging.formats.tiff.TiffField;
024
025public class FieldTypeDouble extends FieldType {
026    public FieldTypeDouble(final int type, final String name) {
027        super(type, name, 8);
028    }
029
030    @Override
031    public Object getValue(final TiffField entry) {
032        final byte[] bytes = entry.getByteArrayValue();
033        if (entry.getCount() == 1) {
034            return ByteConversions.toDouble(bytes,
035                    entry.getByteOrder());
036        }
037        return ByteConversions.toDoubles(bytes, entry.getByteOrder());
038    }
039
040    @Override
041    public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImageWriteException {
042        if (o instanceof Double) {
043            return ByteConversions.toBytes(((Double) o).doubleValue(),
044                    byteOrder);
045        }
046        if (o instanceof double[]) {
047            final double[] numbers = (double[]) o;
048            return ByteConversions.toBytes(numbers, byteOrder);
049        }
050        if (!(o instanceof Double[])) {
051            throw new ImageWriteException("Invalid data", o);
052        }
053        final Double[] numbers = (Double[]) o;
054        final double[] values = new double[numbers.length];
055        for (int i = 0; i < values.length; i++) {
056            values[i] = numbers[i].doubleValue();
057        }
058        return ByteConversions.toBytes(values, byteOrder);
059    }
060
061}