1 /* 2 * $Id$ 3 * 4 * Copyright 2007 by Paulo Soares. 5 * 6 * The contents of this file are subject to the Mozilla Public License Version 1.1 7 * (the "License"); you may not use this file except in compliance with the License. 8 * You may obtain a copy of the License at http://www.mozilla.org/MPL/ 9 * 10 * Software distributed under the License is distributed on an "AS IS" basis, 11 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License 12 * for the specific language governing rights and limitations under the License. 13 * 14 * The Original Code is 'iText, a free JAVA-PDF library'. 15 * 16 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by 17 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie. 18 * All Rights Reserved. 19 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer 20 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved. 21 * 22 * Contributor(s): all the names of the contributors are added in the source code 23 * where applicable. 24 * 25 * Alternatively, the contents of this file may be used under the terms of the 26 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the 27 * provisions of LGPL are applicable instead of those above. If you wish to 28 * allow use of your version of this file only under the terms of the LGPL 29 * License and not to allow others to use your version of this file under 30 * the MPL, indicate your decision by deleting the provisions above and 31 * replace them with the notice and other provisions required by the LGPL. 32 * If you do not delete the provisions above, a recipient may use your version 33 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE. 34 * 35 * This library is free software; you can redistribute it and/or modify it 36 * under the terms of the MPL as stated above or under the terms of the GNU 37 * Library General Public License as published by the Free Software Foundation; 38 * either version 2 of the License, or any later version. 39 * 40 * This library is distributed in the hope that it will be useful, but WITHOUT 41 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 42 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more 43 * details. 44 * 45 * If you didn't download this code from the following link, you should check if 46 * you aren't using an obsolete version: 47 * http://www.lowagie.com/iText/ 48 */ 49 50 package com.lowagie.text; 51 52 import java.io.IOException; 53 import java.io.InputStream; 54 import java.net.URL; 55 import com.lowagie.text.error_messages.MessageLocalization; 56 57 /** 58 * An <CODE>Jpeg2000</CODE> is the representation of a graphic element (JPEG) 59 * that has to be inserted into the document 60 * 61 * @see Element 62 * @see Image 63 */ 64 65 public class Jpeg2000 extends Image { 66 67 // public static final membervariables 68 69 public static final int JP2_JP = 0x6a502020; 70 public static final int JP2_IHDR = 0x69686472; 71 public static final int JPIP_JPIP = 0x6a706970; 72 73 public static final int JP2_FTYP = 0x66747970; 74 public static final int JP2_JP2H = 0x6a703268; 75 public static final int JP2_COLR = 0x636f6c72; 76 public static final int JP2_JP2C = 0x6a703263; 77 public static final int JP2_URL = 0x75726c20; 78 public static final int JP2_DBTL = 0x6474626c; 79 public static final int JP2_BPCC = 0x62706363; 80 public static final int JP2_JP2 = 0x6a703220; 81 82 InputStream inp; 83 int boxLength; 84 int boxType; 85 86 // Constructors 87 Jpeg2000(Image image)88 Jpeg2000(Image image) { 89 super(image); 90 } 91 92 /** 93 * Constructs a <CODE>Jpeg2000</CODE>-object, using an <VAR>url</VAR>. 94 * 95 * @param url the <CODE>URL</CODE> where the image can be found 96 * @throws BadElementException 97 * @throws IOException 98 */ Jpeg2000(URL url)99 public Jpeg2000(URL url) throws BadElementException, IOException { 100 super(url); 101 processParameters(); 102 } 103 104 /** 105 * Constructs a <CODE>Jpeg2000</CODE>-object from memory. 106 * 107 * @param img the memory image 108 * @throws BadElementException 109 * @throws IOException 110 */ 111 Jpeg2000(byte[] img)112 public Jpeg2000(byte[] img) throws BadElementException, IOException { 113 super((URL)null); 114 rawData = img; 115 originalData = img; 116 processParameters(); 117 } 118 119 /** 120 * Constructs a <CODE>Jpeg2000</CODE>-object from memory. 121 * 122 * @param img the memory image. 123 * @param width the width you want the image to have 124 * @param height the height you want the image to have 125 * @throws BadElementException 126 * @throws IOException 127 */ 128 Jpeg2000(byte[] img, float width, float height)129 public Jpeg2000(byte[] img, float width, float height) throws BadElementException, IOException { 130 this(img); 131 scaledWidth = width; 132 scaledHeight = height; 133 } 134 cio_read(int n)135 private int cio_read(int n) throws IOException { 136 int v = 0; 137 for (int i = n - 1; i >= 0; i--) { 138 v += inp.read() << (i << 3); 139 } 140 return v; 141 } 142 jp2_read_boxhdr()143 public void jp2_read_boxhdr() throws IOException { 144 boxLength = cio_read(4); 145 boxType = cio_read(4); 146 if (boxLength == 1) { 147 if (cio_read(4) != 0) { 148 throw new IOException(MessageLocalization.getComposedMessage("cannot.handle.box.sizes.higher.than.2.32")); 149 } 150 boxLength = cio_read(4); 151 if (boxLength == 0) 152 throw new IOException(MessageLocalization.getComposedMessage("unsupported.box.size.eq.eq.0")); 153 } 154 else if (boxLength == 0) { 155 throw new IOException(MessageLocalization.getComposedMessage("unsupported.box.size.eq.eq.0")); 156 } 157 } 158 159 /** 160 * This method checks if the image is a valid JPEG and processes some parameters. 161 * @throws IOException 162 */ processParameters()163 private void processParameters() throws IOException { 164 type = JPEG2000; 165 originalType = ORIGINAL_JPEG2000; 166 inp = null; 167 try { 168 String errorID; 169 if (rawData == null){ 170 inp = url.openStream(); 171 errorID = url.toString(); 172 } 173 else{ 174 inp = new java.io.ByteArrayInputStream(rawData); 175 errorID = "Byte array"; 176 } 177 boxLength = cio_read(4); 178 if (boxLength == 0x0000000c) { 179 boxType = cio_read(4); 180 if (JP2_JP != boxType) { 181 throw new IOException(MessageLocalization.getComposedMessage("expected.jp.marker")); 182 } 183 if (0x0d0a870a != cio_read(4)) { 184 throw new IOException(MessageLocalization.getComposedMessage("error.with.jp.marker")); 185 } 186 187 jp2_read_boxhdr(); 188 if (JP2_FTYP != boxType) { 189 throw new IOException(MessageLocalization.getComposedMessage("expected.ftyp.marker")); 190 } 191 Utilities.skip(inp, boxLength - 8); 192 jp2_read_boxhdr(); 193 do { 194 if (JP2_JP2H != boxType) { 195 if (boxType == JP2_JP2C) { 196 throw new IOException(MessageLocalization.getComposedMessage("expected.jp2h.marker")); 197 } 198 Utilities.skip(inp, boxLength - 8); 199 jp2_read_boxhdr(); 200 } 201 } while(JP2_JP2H != boxType); 202 jp2_read_boxhdr(); 203 if (JP2_IHDR != boxType) { 204 throw new IOException(MessageLocalization.getComposedMessage("expected.ihdr.marker")); 205 } 206 scaledHeight = cio_read(4); 207 setTop(scaledHeight); 208 scaledWidth = cio_read(4); 209 setRight(scaledWidth); 210 bpc = -1; 211 } 212 else if (boxLength == 0xff4fff51) { 213 Utilities.skip(inp, 4); 214 int x1 = cio_read(4); 215 int y1 = cio_read(4); 216 int x0 = cio_read(4); 217 int y0 = cio_read(4); 218 Utilities.skip(inp, 16); 219 colorspace = cio_read(2); 220 bpc = 8; 221 scaledHeight = y1 - y0; 222 setTop(scaledHeight); 223 scaledWidth = x1 - x0; 224 setRight(scaledWidth); 225 } 226 else { 227 throw new IOException(MessageLocalization.getComposedMessage("not.a.valid.jpeg2000.file")); 228 } 229 } 230 finally { 231 if (inp != null) { 232 try{inp.close();}catch(Exception e){} 233 inp = null; 234 } 235 } 236 plainWidth = getWidth(); 237 plainHeight = getHeight(); 238 } 239 } 240