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 FieldTypeFloat extends FieldType {
026    public FieldTypeFloat(final int type, final String name) {
027        super(type, name, 4);
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.toFloat(bytes,
035                    entry.getByteOrder());
036        }
037        return ByteConversions.toFloats(bytes, entry.getByteOrder());
038    }
039
040    @Override
041    public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImageWriteException {
042        if (o instanceof Float) {
043            return ByteConversions.toBytes(((Float) o).floatValue(), byteOrder);
044        } else if (o instanceof float[]) {
045            final float[] numbers = (float[]) o;
046            return ByteConversions.toBytes(numbers, byteOrder);
047        } else if (o instanceof Float[]) {
048            final Float[] numbers = (Float[]) o;
049            final float[] values = new float[numbers.length];
050            for (int i = 0; i < values.length; i++) {
051                values[i] = numbers[i].floatValue();
052            }
053            return ByteConversions.toBytes(values, byteOrder);
054        } else {
055            throw new ImageWriteException("Invalid data", o);
056        }
057    }
058
059}