    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 FieldTypeLong extends AbstractFieldType {
    027    public FieldTypeLong(final int type, final String name) {
    028        super(type, name, 4);
    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.toInt(bytes, entry.getByteOrder());
    036        }
    037        return ByteConversions.toInts(bytes, entry.getByteOrder());
    038    }
    039
    040    @Override
    041    public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImagingException {
    042        if (o instanceof Integer) {
    043            return ByteConversions.toBytes((Integer) o, byteOrder);
    044        }
    045        if (o instanceof int[]) {
    046            final int[] numbers = (int[]) o;
    047            return ByteConversions.toBytes(numbers, byteOrder);
    048        }
    049        if (!(o instanceof Integer[])) {
    050            throw new ImagingException("Invalid data", o);
    051        }
    052        final Integer[] numbers = (Integer[]) o;
    053        final int[] values = Allocator.intArray(numbers.length);
    054        System.arraycopy(numbers, 0, values, 0, values.length);
    055        return ByteConversions.toBytes(values, byteOrder);
    056    }
    057
    058}