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; 025 026/** 027 * Provides an implementation of the 8-byte integer field type specified by the BigTIFF extensions to the TIFF format. 028 */ 029public class FieldTypeLong8 extends AbstractFieldType { 030 public FieldTypeLong8(final int type, final String name) { 031 super(type, name, 8); 032 } 033 034 /** 035 * Gets the value(s) for this field in the form of an array of long integers. 036 * 037 * @param entry the TIFF field as obtained from the source file. 038 * @return a valid, potentially empty array of Java long integers. 039 */ 040 @Override 041 public Object getValue(final TiffField entry) { 042 final byte[] bytes = entry.getByteArrayValue(); 043 if (entry.getCount() == 1) { 044 return ByteConversions.toInt(bytes, entry.getByteOrder()); 045 } 046 return ByteConversions.toLongs(bytes, entry.getByteOrder()); 047 } 048 049 @Override 050 public byte[] writeData(final Object o, final ByteOrder byteOrder) throws ImagingException { 051 if (o instanceof Integer) { 052 return ByteConversions.toBytes((Integer) o, byteOrder); 053 } 054 if (o instanceof int[]) { 055 final int[] numbers = (int[]) o; 056 return ByteConversions.toBytes(numbers, byteOrder); 057 } 058 if (!(o instanceof Integer[])) { 059 throw new ImagingException("Invalid data", o); 060 } 061 final Integer[] numbers = (Integer[]) o; 062 final int[] values = Allocator.intArray(numbers.length); 063 System.arraycopy(numbers, 0, values, 0, values.length); 064 return ByteConversions.toBytes(values, byteOrder); 065 } 066 067}