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.common.RationalNumber; 024import org.apache.commons.imaging.formats.tiff.TiffField; 025 026public class FieldTypeRational extends FieldType { 027 public FieldTypeRational(final int type, final String name) { 028 super(type, name, 8); 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.toRational(bytes, 036 entry.getByteOrder()); 037 } 038 return ByteConversions.toRationals(bytes, entry.getByteOrder()); 039 } 040 041 @Override 042 public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImageWriteException { 043 if (o instanceof RationalNumber) { 044 return ByteConversions.toBytes((RationalNumber) o, byteOrder); 045 } else if (o instanceof RationalNumber[]) { 046 return ByteConversions.toBytes((RationalNumber[]) o, byteOrder); 047 } else if (o instanceof Number) { 048 final Number number = (Number) o; 049 final RationalNumber rationalNumber = RationalNumber.valueOf(number.doubleValue()); 050 return ByteConversions.toBytes(rationalNumber, byteOrder); 051 } else if (o instanceof Number[]) { 052 final Number[] numbers = (Number[]) o; 053 final RationalNumber[] rationalNumbers = new RationalNumber[numbers.length]; 054 for (int i = 0; i < numbers.length; i++) { 055 final Number number = numbers[i]; 056 rationalNumbers[i] = RationalNumber.valueOf(number.doubleValue()); 057 } 058 return ByteConversions.toBytes(rationalNumbers, byteOrder); 059 } else if (o instanceof double[]) { 060 final double[] numbers = (double[]) o; 061 final RationalNumber[] rationalNumbers = new RationalNumber[numbers.length]; 062 for (int i = 0; i < numbers.length; i++) { 063 final double number = numbers[i]; 064 rationalNumbers[i] = RationalNumber.valueOf(number); 065 } 066 return ByteConversions.toBytes(rationalNumbers, byteOrder); 067 } else { 068 throw new ImageWriteException("Invalid data", o); 069 } 070 } 071}