    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.ImagingException;
    022import org.apache.commons.imaging.common.Allocator;
    023import org.apache.commons.imaging.common.ByteConversions;
    024import org.apache.commons.imaging.formats.tiff.TiffField;
    025
    026public class FieldTypeShort extends AbstractFieldType {
    027    public FieldTypeShort(final int type, final String name) {
    028        super(type, name, 2);
    029    }
    030
    031    @Override
    032    public Object getValue(final TiffField entry) {
    033        final byte[] bytes = entry.getByteArrayValue();
    034        if (entry.getCount() == 1) {
    035            return ByteConversions.toShort(bytes, entry.getByteOrder());
    036        }
    037        return ByteConversions.toShorts(bytes, entry.getByteOrder());
    038    }
    039
    040    @Override
    041    public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImagingException {
    042        if (o instanceof Short) {
    043            return ByteConversions.toBytes(((Short) o).shortValue(), byteOrder);
    044        }
    045        if (o instanceof short[]) {
    046            final short[] numbers = (short[]) o;
    047            return ByteConversions.toBytes(numbers, byteOrder);
    048        }
    049        if (!(o instanceof Short[])) {
    050            throw new ImagingException("Invalid data", o);
    051        }
    052        final Short[] numbers = (Short[]) o;
    053        final short[] values = Allocator.shortArray(numbers.length);
    054        for (int i = 0; i < values.length; i++) {
    055            values[i] = numbers[i].shortValue();
    056        }
    057        return ByteConversions.toBytes(values, byteOrder);
    058    }
    059
    060}