1 /*
2 * $Id: PdfImage.java 3715 2009-02-23 15:02:23Z blowagie $
3 *
4 * Copyright 1999, 2000, 2001, 2002 Bruno Lowagie
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.pdf;
51
52 import java.io.ByteArrayOutputStream;
53 import java.io.IOException;
54 import java.io.InputStream;
55 import java.io.OutputStream;
56
57 import com.lowagie.text.Image;
58
59 /**
60 * <CODE>PdfImage</CODE> is a <CODE>PdfStream</CODE> containing an image-<CODE>Dictionary</CODE> and -stream.
61 */
62
63 public class PdfImage extends PdfStream {
64
65 static final int TRANSFERSIZE = 4096;
66 // membervariables
67
68 /** This is the <CODE>PdfName</CODE> of the image. */
69 protected PdfName name = null;
70
71 // constructor
72
73 /**
74 * Constructs a <CODE>PdfImage</CODE>-object.
75 *
76 * @param image the <CODE>Image</CODE>-object
77 * @param name the <CODE>PdfName</CODE> for this image
78 * @throws BadPdfFormatException on error
79 */
80
81 public PdfImage(Image image, String name, PdfIndirectReference maskRef) throws BadPdfFormatException {
82 super();
83 this.name = new PdfName(name);
84 put(PdfName.TYPE, PdfName.XOBJECT);
85 put(PdfName.SUBTYPE, PdfName.IMAGE);
86 put(PdfName.WIDTH, new PdfNumber(image.getWidth()));
87 put(PdfName.HEIGHT, new PdfNumber(image.getHeight()));
88 if (image.getLayer() != null)
89 put(PdfName.OC, image.getLayer().getRef());
90 if (image.isMask() && (image.getBpc() == 1 || image.getBpc() > 0xff))
91 put(PdfName.IMAGEMASK, PdfBoolean.PDFTRUE);
92 if (maskRef != null) {
93 if (image.isSmask())
94 put(PdfName.SMASK, maskRef);
95 else
96 put(PdfName.MASK, maskRef);
97 }
98 if (image.isMask() && image.isInverted())
99 put(PdfName.DECODE, new PdfLiteral("[1 0]"));
100 if (image.isInterpolation())
101 put(PdfName.INTERPOLATE, PdfBoolean.PDFTRUE);
102 InputStream is = null;
103 try {
104 // Raw Image data
105 if (image.isImgRaw()) {
106 // will also have the CCITT parameters
107 int colorspace = image.getColorspace();
108 int transparency[] = image.getTransparency();
109 if (transparency != null && !image.isMask() && maskRef == null) {
110 String s = "[";
111 for (int k = 0; k < transparency.length; ++k)
112 s += transparency[k] + " ";
113 s += "]";
114 put(PdfName.MASK, new PdfLiteral(s));
115 }
116 bytes = image.getRawData();
117 put(PdfName.LENGTH, new PdfNumber(bytes.length));
118 int bpc = image.getBpc();
119 if (bpc > 0xff) {
120 if (!image.isMask())
121 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
122 put(PdfName.BITSPERCOMPONENT, new PdfNumber(1));
123 put(PdfName.FILTER, PdfName.CCITTFAXDECODE);
124 int k = bpc - Image.CCITTG3_1D;
125 PdfDictionary decodeparms = new PdfDictionary();
126 if (k != 0)
127 decodeparms.put(PdfName.K, new PdfNumber(k));
128 if ((colorspace & Image.CCITT_BLACKIS1) != 0)
129 decodeparms.put(PdfName.BLACKIS1, PdfBoolean.PDFTRUE);
130 if ((colorspace & Image.CCITT_ENCODEDBYTEALIGN) != 0)
131 decodeparms.put(PdfName.ENCODEDBYTEALIGN, PdfBoolean.PDFTRUE);
132 if ((colorspace & Image.CCITT_ENDOFLINE) != 0)
133 decodeparms.put(PdfName.ENDOFLINE, PdfBoolean.PDFTRUE);
134 if ((colorspace & Image.CCITT_ENDOFBLOCK) != 0)
135 decodeparms.put(PdfName.ENDOFBLOCK, PdfBoolean.PDFFALSE);
136 decodeparms.put(PdfName.COLUMNS, new PdfNumber(image.getWidth()));
137 decodeparms.put(PdfName.ROWS, new PdfNumber(image.getHeight()));
138 put(PdfName.DECODEPARMS, decodeparms);
139 }
140 else {
141 switch(colorspace) {
142 case 1:
143 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
144 if (image.isInverted())
145 put(PdfName.DECODE, new PdfLiteral("[1 0]"));
146 break;
147 case 3:
148 put(PdfName.COLORSPACE, PdfName.DEVICERGB);
149 if (image.isInverted())
150 put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0]"));
151 break;
152 case 4:
153 default:
154 put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
155 if (image.isInverted())
156 put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
157 }
158 PdfDictionary additional = image.getAdditional();
159 if (additional != null)
160 putAll(additional);
161 if (image.isMask() && (image.getBpc() == 1 || image.getBpc() > 8))
162 remove(PdfName.COLORSPACE);
163 put(PdfName.BITSPERCOMPONENT, new PdfNumber(image.getBpc()));
164 if (image.isDeflated())
165 put(PdfName.FILTER, PdfName.FLATEDECODE);
166 else {
167 flateCompress(image.getCompressionLevel());
168 }
169 }
170 return;
171 }
172 // GIF, JPEG or PNG
173 String errorID;
174 if (image.getRawData() == null){
175 is = image.getUrl().openStream();
176 errorID = image.getUrl().toString();
177 }
178 else{
179 is = new java.io.ByteArrayInputStream(image.getRawData());
180 errorID = "Byte array";
181 }
182 switch(image.type()) {
183 case Image.JPEG:
184 put(PdfName.FILTER, PdfName.DCTDECODE);
185 switch(image.getColorspace()) {
186 case 1:
187 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
188 break;
189 case 3:
190 put(PdfName.COLORSPACE, PdfName.DEVICERGB);
191 break;
192 default:
193 put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
194 if (image.isInverted()) {
195 put(PdfName.DECODE, new PdfLiteral("[1 0 1 0 1 0 1 0]"));
196 }
197 }
198 put(PdfName.BITSPERCOMPONENT, new PdfNumber(8));
199 if (image.getRawData() != null){
200 bytes = image.getRawData();
201 put(PdfName.LENGTH, new PdfNumber(bytes.length));
202 return;
203 }
204 streamBytes = new ByteArrayOutputStream();
205 transferBytes(is, streamBytes, -1);
206 break;
207 case Image.JPEG2000:
208 put(PdfName.FILTER, PdfName.JPXDECODE);
209 if (image.getColorspace() > 0) {
210 switch(image.getColorspace()) {
211 case 1:
212 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
213 break;
214 case 3:
215 put(PdfName.COLORSPACE, PdfName.DEVICERGB);
216 break;
217 default:
218 put(PdfName.COLORSPACE, PdfName.DEVICECMYK);
219 }
220 put(PdfName.BITSPERCOMPONENT, new PdfNumber(image.getBpc()));
221 }
222 if (image.getRawData() != null){
223 bytes = image.getRawData();
224 put(PdfName.LENGTH, new PdfNumber(bytes.length));
225 return;
226 }
227 streamBytes = new ByteArrayOutputStream();
228 transferBytes(is, streamBytes, -1);
229 break;
230 case Image.JBIG2:
231 put(PdfName.FILTER, PdfName.JBIG2DECODE);
232 put(PdfName.COLORSPACE, PdfName.DEVICEGRAY);
233 put(PdfName.BITSPERCOMPONENT, new PdfNumber(1));
234 if (image.getRawData() != null){
235 bytes = image.getRawData();
236 put(PdfName.LENGTH, new PdfNumber(bytes.length));
237 return;
238 }
239 streamBytes = new ByteArrayOutputStream();
240 transferBytes(is, streamBytes, -1);
241 break;
242 default:
243 throw new BadPdfFormatException(errorID + " is an unknown Image format.");
244 }
245 put(PdfName.LENGTH, new PdfNumber(streamBytes.size()));
246 }
247 catch(IOException ioe) {
248 throw new BadPdfFormatException(ioe.getMessage());
249 }
250 finally {
251 if (is != null) {
252 try{
253 is.close();
254 }
255 catch (Exception ee) {
256 // empty on purpose
257 }
258 }
259 }
260 }
261
262 /**
263 * Returns the <CODE>PdfName</CODE> of the image.
264 *
265 * @return the name
266 */
267
268 public PdfName name() {
269 return name;
270 }
271
272 static void transferBytes(InputStream in, OutputStream out, int len) throws IOException {
273 byte buffer[] = new byte[TRANSFERSIZE];
274 if (len < 0)
275 len = 0x7ffffff;
276 int size;
277 while (len != 0) {
278 size = in.read(buffer, 0, Math.min(len, TRANSFERSIZE));
279 if (size < 0)
280 return;
281 out.write(buffer, 0, size);
282 len -= size;
283 }
284 }
285
286 protected void importAll(PdfImage dup) {
287 name = dup.name;
288 compressed = dup.compressed;
289 compressionLevel = dup.compressionLevel;
290 streamBytes = dup.streamBytes;
291 bytes = dup.bytes;
292 hashMap = dup.hashMap;
293 }
294 }
295