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Apache Commons Imaging (previously Sanselan) is a pure-Java image library.
/*
* Licensed to the Apache Software Foundation (ASF) under one or more
* contributor license agreements. See the NOTICE file distributed with
* this work for additional information regarding copyright ownership.
* The ASF licenses this file to You under the Apache License, Version 2.0
* (the "License"); you may not use this file except in compliance with
* the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.apache.commons.imaging.formats.tiff.fieldtypes;
import java.nio.ByteOrder;
import org.apache.commons.imaging.ImageWriteException;
import org.apache.commons.imaging.common.ByteConversions;
import org.apache.commons.imaging.formats.tiff.TiffField;
public class FieldTypeFloat extends FieldType {
public FieldTypeFloat(final int type, final String name) {
super(type, name, 4);
}
@Override
public Object getValue(final TiffField entry) {
final byte[] bytes = entry.getByteArrayValue();
if (entry.getCount() == 1) {
return ByteConversions.toFloat(bytes,
entry.getByteOrder());
}
return ByteConversions.toFloats(bytes, entry.getByteOrder());
}
@Override
public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImageWriteException {
if (o instanceof Float) {
return ByteConversions.toBytes(((Float) o).floatValue(), byteOrder);
} else if (o instanceof float[]) {
final float[] numbers = (float[]) o;
return ByteConversions.toBytes(numbers, byteOrder);
} else if (o instanceof Float[]) {
final Float[] numbers = (Float[]) o;
final float[] values = new float[numbers.length];
for (int i = 0; i < values.length; i++) {
values[i] = numbers[i].floatValue();
}
return ByteConversions.toBytes(values, byteOrder);
} else {
throw new ImageWriteException("Invalid data", o);
}
}
}