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 FieldTypeShort extends FieldType {
026    public FieldTypeShort(final int type, final String name) {
027        super(type, name, 2);
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.toShort(bytes, entry.getByteOrder());
035        }
036        return ByteConversions.toShorts(bytes, entry.getByteOrder());
037    }
038
039    @Override
040    public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImageWriteException {
041        if (o instanceof Short) {
042            return ByteConversions.toBytes(((Short) o).shortValue(), byteOrder);
043        }
044        if (o instanceof short[]) {
045            final short[] numbers = (short[]) o;
046            return ByteConversions.toBytes(numbers, byteOrder);
047        }
048        if (!(o instanceof Short[])) {
049            throw new ImageWriteException("Invalid data", o);
050        }
051        final Short[] numbers = (Short[]) o;
052        final short[] values = new short[numbers.length];
053        for (int i = 0; i < values.length; i++) {
054            values[i] = numbers[i].shortValue();
055        }
056        return ByteConversions.toBytes(values, byteOrder);
057    }
058
059}