1 /*
2 * Copyright 2003-2005 by Paulo Soares.
3 *
4 * The contents of this file are subject to the Mozilla Public License Version 1.1
5 * (the "License"); you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at http://www.mozilla.org/MPL/
7 *
8 * Software distributed under the License is distributed on an "AS IS" basis,
9 * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
10 * for the specific language governing rights and limitations under the License.
11 *
12 * The Original Code is 'iText, a free JAVA-PDF library'.
13 *
14 * The Initial Developer of the Original Code is Bruno Lowagie. Portions created by
15 * the Initial Developer are Copyright (C) 1999, 2000, 2001, 2002 by Bruno Lowagie.
16 * All Rights Reserved.
17 * Co-Developer of the code is Paulo Soares. Portions created by the Co-Developer
18 * are Copyright (C) 2000, 2001, 2002 by Paulo Soares. All Rights Reserved.
19 *
20 * Contributor(s): all the names of the contributors are added in the source code
21 * where applicable.
22 *
23 * Alternatively, the contents of this file may be used under the terms of the
24 * LGPL license (the "GNU LIBRARY GENERAL PUBLIC LICENSE"), in which case the
25 * provisions of LGPL are applicable instead of those above. If you wish to
26 * allow use of your version of this file only under the terms of the LGPL
27 * License and not to allow others to use your version of this file under
28 * the MPL, indicate your decision by deleting the provisions above and
29 * replace them with the notice and other provisions required by the LGPL.
30 * If you do not delete the provisions above, a recipient may use your version
31 * of this file under either the MPL or the GNU LIBRARY GENERAL PUBLIC LICENSE.
32 *
33 * This library is free software; you can redistribute it and/or modify it
34 * under the terms of the MPL as stated above or under the terms of the GNU
35 * Library General Public License as published by the Free Software Foundation;
36 * either version 2 of the License, or any later version.
37 *
38 * This library is distributed in the hope that it will be useful, but WITHOUT
39 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
40 * FOR A PARTICULAR PURPOSE. See the GNU Library general Public License for more
41 * details.
42 *
43 * If you didn't download this code from the following link, you should check if
44 * you aren't using an obsolete version:
45 * http://www.lowagie.com/iText/
46 */
47 package com.lowagie.text.pdf.codec;
48 import java.awt.color.ICC_Profile;
49 import java.io.ByteArrayOutputStream;
50 import java.io.IOException;
51 import java.util.zip.DataFormatException;
52 import java.util.zip.DeflaterOutputStream;
53 import java.util.zip.Inflater;
54
55 import com.lowagie.text.ExceptionConverter;
56 import com.lowagie.text.Image;
57 import com.lowagie.text.Jpeg;
58 import com.lowagie.text.pdf.PdfArray;
59 import com.lowagie.text.pdf.PdfDictionary;
60 import com.lowagie.text.pdf.PdfName;
61 import com.lowagie.text.pdf.PdfNumber;
62 import com.lowagie.text.pdf.PdfString;
63 import com.lowagie.text.pdf.RandomAccessFileOrArray;
64
65 /** Reads TIFF images
66 * @author Paulo Soares (psoares@consiste.pt)
67 */
68 public class TiffImage {
69
70 /** Gets the number of pages the TIFF document has.
71 * @param s the file source
72 * @return the number of pages
73 */
74 public static int getNumberOfPages(RandomAccessFileOrArray s) {
75 try {
76 return TIFFDirectory.getNumDirectories(s);
77 }
78 catch (Exception e) {
79 throw new ExceptionConverter(e);
80 }
81 }
82
83 static int getDpi(TIFFField fd, int resolutionUnit) {
84 if (fd == null)
85 return 0;
86 long res[] = fd.getAsRational(0);
87 float frac = (float)res[0] / (float)res[1];
88 int dpi = 0;
89 switch (resolutionUnit) {
90 case TIFFConstants.RESUNIT_INCH:
91 case TIFFConstants.RESUNIT_NONE:
92 dpi = (int)(frac + 0.5);
93 break;
94 case TIFFConstants.RESUNIT_CENTIMETER:
95 dpi = (int)(frac * 2.54 + 0.5);
96 break;
97 }
98 return dpi;
99 }
100
101 /** Reads a page from a TIFF image. Direct mode is not used.
102 * @param s the file source
103 * @param page the page to get. The first page is 1
104 * @return the <CODE>Image</CODE>
105 */
106 public static Image getTiffImage(RandomAccessFileOrArray s, int page) {
107 return getTiffImage(s, page, false);
108 }
109
110 /** Reads a page from a TIFF image.
111 * @param s the file source
112 * @param page the page to get. The first page is 1
113 * @param direct for single strip, CCITT images, generate the image
114 * by direct byte copying. It's faster but may not work
115 * every time
116 * @return the <CODE>Image</CODE>
117 */
118 public static Image getTiffImage(RandomAccessFileOrArray s, int page, boolean direct) {
119 if (page < 1)
120 throw new IllegalArgumentException("The page number must be >= 1.");
121 try {
122 TIFFDirectory dir = new TIFFDirectory(s, page - 1);
123 if (dir.isTagPresent(TIFFConstants.TIFFTAG_TILEWIDTH))
124 throw new IllegalArgumentException("Tiles are not supported.");
125 int compression = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_COMPRESSION);
126 switch (compression) {
127 case TIFFConstants.COMPRESSION_CCITTRLEW:
128 case TIFFConstants.COMPRESSION_CCITTRLE:
129 case TIFFConstants.COMPRESSION_CCITTFAX3:
130 case TIFFConstants.COMPRESSION_CCITTFAX4:
131 break;
132 default:
133 return getTiffImageColor(dir, s);
134 }
135 float rotation = 0;
136 if (dir.isTagPresent(TIFFConstants.TIFFTAG_ORIENTATION)) {
137 int rot = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_ORIENTATION);
138 if (rot == TIFFConstants.ORIENTATION_BOTRIGHT || rot == TIFFConstants.ORIENTATION_BOTLEFT)
139 rotation = (float)Math.PI;
140 else if (rot == TIFFConstants.ORIENTATION_LEFTTOP || rot == TIFFConstants.ORIENTATION_LEFTBOT)
141 rotation = (float)(Math.PI / 2.0);
142 else if (rot == TIFFConstants.ORIENTATION_RIGHTTOP || rot == TIFFConstants.ORIENTATION_RIGHTBOT)
143 rotation = -(float)(Math.PI / 2.0);
144 }
145
146 Image img = null;
147 long tiffT4Options = 0;
148 long tiffT6Options = 0;
149 int fillOrder = 1;
150 int h = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_IMAGELENGTH);
151 int w = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_IMAGEWIDTH);
152 int dpiX = 0;
153 int dpiY = 0;
154 float XYRatio = 0;
155 int resolutionUnit = TIFFConstants.RESUNIT_INCH;
156 if (dir.isTagPresent(TIFFConstants.TIFFTAG_RESOLUTIONUNIT))
157 resolutionUnit = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_RESOLUTIONUNIT);
158 dpiX = getDpi(dir.getField(TIFFConstants.TIFFTAG_XRESOLUTION), resolutionUnit);
159 dpiY = getDpi(dir.getField(TIFFConstants.TIFFTAG_YRESOLUTION), resolutionUnit);
160 if (resolutionUnit == TIFFConstants.RESUNIT_NONE) {
161 if (dpiY != 0)
162 XYRatio = (float)dpiX / (float)dpiY;
163 dpiX = 0;
164 dpiY = 0;
165 }
166 int rowsStrip = h;
167 if (dir.isTagPresent(TIFFConstants.TIFFTAG_ROWSPERSTRIP))
168 rowsStrip = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_ROWSPERSTRIP);
169 if (rowsStrip <= 0 || rowsStrip > h)
170 rowsStrip = h;
171 long offset[] = getArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPOFFSETS);
172 long size[] = getArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPBYTECOUNTS);
173 if ((size == null || (size.length == 1 && (size[0] == 0 || size[0] + offset[0] > s.length()))) && h == rowsStrip) { // some TIFF producers are really lousy, so...
174 size = new long[]{s.length() - (int)offset[0]};
175 }
176 boolean reverse = false;
177 TIFFField fillOrderField = dir.getField(TIFFConstants.TIFFTAG_FILLORDER);
178 if (fillOrderField != null)
179 fillOrder = fillOrderField.getAsInt(0);
180 reverse = (fillOrder == TIFFConstants.FILLORDER_LSB2MSB);
181 int params = 0;
182 if (dir.isTagPresent(TIFFConstants.TIFFTAG_PHOTOMETRIC)) {
183 long photo = dir.getFieldAsLong(TIFFConstants.TIFFTAG_PHOTOMETRIC);
184 if (photo == TIFFConstants.PHOTOMETRIC_MINISBLACK)
185 params |= Image.CCITT_BLACKIS1;
186 }
187 int imagecomp = 0;
188 switch (compression) {
189 case TIFFConstants.COMPRESSION_CCITTRLEW:
190 case TIFFConstants.COMPRESSION_CCITTRLE:
191 imagecomp = Image.CCITTG3_1D;
192 params |= Image.CCITT_ENCODEDBYTEALIGN | Image.CCITT_ENDOFBLOCK;
193 break;
194 case TIFFConstants.COMPRESSION_CCITTFAX3:
195 imagecomp = Image.CCITTG3_1D;
196 params |= Image.CCITT_ENDOFLINE | Image.CCITT_ENDOFBLOCK;
197 TIFFField t4OptionsField = dir.getField(TIFFConstants.TIFFTAG_GROUP3OPTIONS);
198 if (t4OptionsField != null) {
199 tiffT4Options = t4OptionsField.getAsLong(0);
200 if ((tiffT4Options & TIFFConstants.GROUP3OPT_2DENCODING) != 0)
201 imagecomp = Image.CCITTG3_2D;
202 if ((tiffT4Options & TIFFConstants.GROUP3OPT_FILLBITS) != 0)
203 params |= Image.CCITT_ENCODEDBYTEALIGN;
204 }
205 break;
206 case TIFFConstants.COMPRESSION_CCITTFAX4:
207 imagecomp = Image.CCITTG4;
208 TIFFField t6OptionsField = dir.getField(TIFFConstants.TIFFTAG_GROUP4OPTIONS);
209 if (t6OptionsField != null)
210 tiffT6Options = t6OptionsField.getAsLong(0);
211 break;
212 }
213 if (direct && rowsStrip == h) { //single strip, direct
214 byte im[] = new byte[(int)size[0]];
215 s.seek(offset[0]);
216 s.readFully(im);
217 img = Image.getInstance(w, h, false, imagecomp, params, im);
218 img.setInverted(true);
219 }
220 else {
221 int rowsLeft = h;
222 CCITTG4Encoder g4 = new CCITTG4Encoder(w);
223 for (int k = 0; k < offset.length; ++k) {
224 byte im[] = new byte[(int)size[k]];
225 s.seek(offset[k]);
226 s.readFully(im);
227 int height = Math.min(rowsStrip, rowsLeft);
228 TIFFFaxDecoder decoder = new TIFFFaxDecoder(fillOrder, w, height);
229 byte outBuf[] = new byte[(w + 7) / 8 * height];
230 switch (compression) {
231 case TIFFConstants.COMPRESSION_CCITTRLEW:
232 case TIFFConstants.COMPRESSION_CCITTRLE:
233 decoder.decode1D(outBuf, im, 0, height);
234 g4.fax4Encode(outBuf,height);
235 break;
236 case TIFFConstants.COMPRESSION_CCITTFAX3:
237 try {
238 decoder.decode2D(outBuf, im, 0, height, tiffT4Options);
239 }
240 catch (RuntimeException e) {
241 // let's flip the fill bits and try again...
242 tiffT4Options ^= TIFFConstants.GROUP3OPT_FILLBITS;
243 try {
244 decoder.decode2D(outBuf, im, 0, height, tiffT4Options);
245 }
246 catch (RuntimeException e2) {
247 throw e;
248 }
249 }
250 g4.fax4Encode(outBuf, height);
251 break;
252 case TIFFConstants.COMPRESSION_CCITTFAX4:
253 decoder.decodeT6(outBuf, im, 0, height, tiffT6Options);
254 g4.fax4Encode(outBuf, height);
255 break;
256 }
257 rowsLeft -= rowsStrip;
258 }
259 byte g4pic[] = g4.close();
260 img = Image.getInstance(w, h, false, Image.CCITTG4, params & Image.CCITT_BLACKIS1, g4pic);
261 }
262 img.setDpi(dpiX, dpiY);
263 img.setXYRatio(XYRatio);
264 if (dir.isTagPresent(TIFFConstants.TIFFTAG_ICCPROFILE)) {
265 try {
266 TIFFField fd = dir.getField(TIFFConstants.TIFFTAG_ICCPROFILE);
267 ICC_Profile icc_prof = ICC_Profile.getInstance(fd.getAsBytes());
268 if (icc_prof.getNumComponents() == 1)
269 img.tagICC(icc_prof);
270 }
271 catch (RuntimeException e) {
272 //empty
273 }
274 }
275 img.setOriginalType(Image.ORIGINAL_TIFF);
276 if (rotation != 0)
277 img.setInitialRotation(rotation);
278 return img;
279 }
280 catch (Exception e) {
281 throw new ExceptionConverter(e);
282 }
283 }
284
285 protected static Image getTiffImageColor(TIFFDirectory dir, RandomAccessFileOrArray s) {
286 try {
287 int compression = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_COMPRESSION);
288 int predictor = 1;
289 TIFFLZWDecoder lzwDecoder = null;
290 switch (compression) {
291 case TIFFConstants.COMPRESSION_NONE:
292 case TIFFConstants.COMPRESSION_LZW:
293 case TIFFConstants.COMPRESSION_PACKBITS:
294 case TIFFConstants.COMPRESSION_DEFLATE:
295 case TIFFConstants.COMPRESSION_ADOBE_DEFLATE:
296 case TIFFConstants.COMPRESSION_OJPEG:
297 case TIFFConstants.COMPRESSION_JPEG:
298 break;
299 default:
300 throw new IllegalArgumentException("The compression " + compression + " is not supported.");
301 }
302 int photometric = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_PHOTOMETRIC);
303 switch (photometric) {
304 case TIFFConstants.PHOTOMETRIC_MINISWHITE:
305 case TIFFConstants.PHOTOMETRIC_MINISBLACK:
306 case TIFFConstants.PHOTOMETRIC_RGB:
307 case TIFFConstants.PHOTOMETRIC_SEPARATED:
308 case TIFFConstants.PHOTOMETRIC_PALETTE:
309 break;
310 default:
311 if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG)
312 throw new IllegalArgumentException("The photometric " + photometric + " is not supported.");
313 }
314 float rotation = 0;
315 if (dir.isTagPresent(TIFFConstants.TIFFTAG_ORIENTATION)) {
316 int rot = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_ORIENTATION);
317 if (rot == TIFFConstants.ORIENTATION_BOTRIGHT || rot == TIFFConstants.ORIENTATION_BOTLEFT)
318 rotation = (float)Math.PI;
319 else if (rot == TIFFConstants.ORIENTATION_LEFTTOP || rot == TIFFConstants.ORIENTATION_LEFTBOT)
320 rotation = (float)(Math.PI / 2.0);
321 else if (rot == TIFFConstants.ORIENTATION_RIGHTTOP || rot == TIFFConstants.ORIENTATION_RIGHTBOT)
322 rotation = -(float)(Math.PI / 2.0);
323 }
324 if (dir.isTagPresent(TIFFConstants.TIFFTAG_PLANARCONFIG)
325 && dir.getFieldAsLong(TIFFConstants.TIFFTAG_PLANARCONFIG) == TIFFConstants.PLANARCONFIG_SEPARATE)
326 throw new IllegalArgumentException("Planar images are not supported.");
327 if (dir.isTagPresent(TIFFConstants.TIFFTAG_EXTRASAMPLES))
328 throw new IllegalArgumentException("Extra samples are not supported.");
329 int samplePerPixel = 1;
330 if (dir.isTagPresent(TIFFConstants.TIFFTAG_SAMPLESPERPIXEL)) // 1,3,4
331 samplePerPixel = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_SAMPLESPERPIXEL);
332 int bitsPerSample = 1;
333 if (dir.isTagPresent(TIFFConstants.TIFFTAG_BITSPERSAMPLE))
334 bitsPerSample = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_BITSPERSAMPLE);
335 switch (bitsPerSample) {
336 case 1:
337 case 2:
338 case 4:
339 case 8:
340 break;
341 default:
342 throw new IllegalArgumentException("Bits per sample " + bitsPerSample + " is not supported.");
343 }
344 Image img = null;
345
346 int h = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_IMAGELENGTH);
347 int w = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_IMAGEWIDTH);
348 int dpiX = 0;
349 int dpiY = 0;
350 int resolutionUnit = TIFFConstants.RESUNIT_INCH;
351 if (dir.isTagPresent(TIFFConstants.TIFFTAG_RESOLUTIONUNIT))
352 resolutionUnit = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_RESOLUTIONUNIT);
353 dpiX = getDpi(dir.getField(TIFFConstants.TIFFTAG_XRESOLUTION), resolutionUnit);
354 dpiY = getDpi(dir.getField(TIFFConstants.TIFFTAG_YRESOLUTION), resolutionUnit);
355 int fillOrder = 1;
356 boolean reverse = false;
357 TIFFField fillOrderField = dir.getField(TIFFConstants.TIFFTAG_FILLORDER);
358 if (fillOrderField != null)
359 fillOrder = fillOrderField.getAsInt(0);
360 reverse = (fillOrder == TIFFConstants.FILLORDER_LSB2MSB);
361 int rowsStrip = h;
362 if (dir.isTagPresent(TIFFConstants.TIFFTAG_ROWSPERSTRIP)) //another hack for broken tiffs
363 rowsStrip = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_ROWSPERSTRIP);
364 if (rowsStrip <= 0 || rowsStrip > h)
365 rowsStrip = h;
366 long offset[] = getArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPOFFSETS);
367 long size[] = getArrayLongShort(dir, TIFFConstants.TIFFTAG_STRIPBYTECOUNTS);
368 if ((size == null || (size.length == 1 && (size[0] == 0 || size[0] + offset[0] > s.length()))) && h == rowsStrip) { // some TIFF producers are really lousy, so...
369 size = new long[]{s.length() - (int)offset[0]};
370 }
371 if (compression == TIFFConstants.COMPRESSION_LZW) {
372 TIFFField predictorField = dir.getField(TIFFConstants.TIFFTAG_PREDICTOR);
373 if (predictorField != null) {
374 predictor = predictorField.getAsInt(0);
375 if (predictor != 1 && predictor != 2) {
376 throw new RuntimeException("Illegal value for Predictor in TIFF file.");
377 }
378 if (predictor == 2 && bitsPerSample != 8) {
379 throw new RuntimeException(bitsPerSample + "-bit samples are not supported for Horizontal differencing Predictor.");
380 }
381 }
382 lzwDecoder = new TIFFLZWDecoder(w, predictor,
383 samplePerPixel);
384 }
385 int rowsLeft = h;
386 ByteArrayOutputStream stream = null;
387 DeflaterOutputStream zip = null;
388 CCITTG4Encoder g4 = null;
389 if (bitsPerSample == 1 && samplePerPixel == 1) {
390 g4 = new CCITTG4Encoder(w);
391 }
392 else {
393 stream = new ByteArrayOutputStream();
394 if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG)
395 zip = new DeflaterOutputStream(stream);
396 }
397 if (compression == TIFFConstants.COMPRESSION_OJPEG) {
398
399 // Assume that the TIFFTAG_JPEGIFBYTECOUNT tag is optional, since it's obsolete and
400 // is often missing
401
402 if ((!dir.isTagPresent(TIFFConstants.TIFFTAG_JPEGIFOFFSET))) {
403 throw new IOException("Missing tag(s) for OJPEG compression.");
404 }
405 int jpegOffset = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_JPEGIFOFFSET);
406 int jpegLength = s.length() - jpegOffset;
407
408 if (dir.isTagPresent(TIFFConstants.TIFFTAG_JPEGIFBYTECOUNT)) {
409 jpegLength = (int)dir.getFieldAsLong(TIFFConstants.TIFFTAG_JPEGIFBYTECOUNT) +
410 (int)size[0];
411 }
412
413 byte[] jpeg = new byte[Math.min(jpegLength, s.length() - jpegOffset)];
414
415 int posFilePointer = s.getFilePointer();
416 posFilePointer += jpegOffset;
417 s.seek(posFilePointer);
418 s.readFully(jpeg);
419 img = new Jpeg(jpeg);
420 }
421 else if (compression == TIFFConstants.COMPRESSION_JPEG) {
422 if (size.length > 1)
423 throw new IOException("Compression JPEG is only supported with a single strip. This image has " + size.length + " strips.");
424 byte[] jpeg = new byte[(int)size[0]];
425 s.seek(offset[0]);
426 s.readFully(jpeg);
427 img = new Jpeg(jpeg);
428 }
429 else {
430 for (int k = 0; k < offset.length; ++k) {
431 byte im[] = new byte[(int)size[k]];
432 s.seek(offset[k]);
433 s.readFully(im);
434 int height = Math.min(rowsStrip, rowsLeft);
435 byte outBuf[] = null;
436 if (compression != TIFFConstants.COMPRESSION_NONE)
437 outBuf = new byte[(w * bitsPerSample * samplePerPixel + 7) / 8 * height];
438 if (reverse)
439 TIFFFaxDecoder.reverseBits(im);
440 switch (compression) {
441 case TIFFConstants.COMPRESSION_DEFLATE:
442 case TIFFConstants.COMPRESSION_ADOBE_DEFLATE:
443 inflate(im, outBuf);
444 break;
445 case TIFFConstants.COMPRESSION_NONE:
446 outBuf = im;
447 break;
448 case TIFFConstants.COMPRESSION_PACKBITS:
449 decodePackbits(im, outBuf);
450 break;
451 case TIFFConstants.COMPRESSION_LZW:
452 lzwDecoder.decode(im, outBuf, height);
453 break;
454 }
455 if (bitsPerSample == 1 && samplePerPixel == 1) {
456 g4.fax4Encode(outBuf, height);
457 }
458 else {
459 zip.write(outBuf);
460 }
461 rowsLeft -= rowsStrip;
462 }
463 if (bitsPerSample == 1 && samplePerPixel == 1) {
464 img = Image.getInstance(w, h, false, Image.CCITTG4,
465 photometric == TIFFConstants.PHOTOMETRIC_MINISBLACK ? Image.CCITT_BLACKIS1 : 0, g4.close());
466 }
467 else {
468 zip.close();
469 img = Image.getInstance(w, h, samplePerPixel, bitsPerSample, stream.toByteArray());
470 img.setDeflated(true);
471 }
472 }
473 img.setDpi(dpiX, dpiY);
474 if (compression != TIFFConstants.COMPRESSION_OJPEG && compression != TIFFConstants.COMPRESSION_JPEG) {
475 if (dir.isTagPresent(TIFFConstants.TIFFTAG_ICCPROFILE)) {
476 try {
477 TIFFField fd = dir.getField(TIFFConstants.TIFFTAG_ICCPROFILE);
478 ICC_Profile icc_prof = ICC_Profile.getInstance(fd.getAsBytes());
479 if (samplePerPixel == icc_prof.getNumComponents())
480 img.tagICC(icc_prof);
481 }
482 catch (RuntimeException e) {
483 //empty
484 }
485 }
486 if (dir.isTagPresent(TIFFConstants.TIFFTAG_COLORMAP)) {
487 TIFFField fd = dir.getField(TIFFConstants.TIFFTAG_COLORMAP);
488 char rgb[] = fd.getAsChars();
489 byte palette[] = new byte[rgb.length];
490 int gColor = rgb.length / 3;
491 int bColor = gColor * 2;
492 for (int k = 0; k < gColor; ++k) {
493 palette[k * 3] = (byte)(rgb[k] >>> 8);
494 palette[k * 3 + 1] = (byte)(rgb[k + gColor] >>> 8);
495 palette[k * 3 + 2] = (byte)(rgb[k + bColor] >>> 8);
496 }
497 PdfArray indexed = new PdfArray();
498 indexed.add(PdfName.INDEXED);
499 indexed.add(PdfName.DEVICERGB);
500 indexed.add(new PdfNumber(gColor - 1));
501 indexed.add(new PdfString(palette));
502 PdfDictionary additional = new PdfDictionary();
503 additional.put(PdfName.COLORSPACE, indexed);
504 img.setAdditional(additional);
505 }
506 img.setOriginalType(Image.ORIGINAL_TIFF);
507 }
508 if (photometric == TIFFConstants.PHOTOMETRIC_MINISWHITE)
509 img.setInverted(true);
510 if (rotation != 0)
511 img.setInitialRotation(rotation);
512 return img;
513 }
514 catch (Exception e) {
515 throw new ExceptionConverter(e);
516 }
517 }
518
519 static long[] getArrayLongShort(TIFFDirectory dir, int tag) {
520 TIFFField field = dir.getField(tag);
521 if (field == null)
522 return null;
523 long offset[];
524 if (field.getType() == TIFFField.TIFF_LONG)
525 offset = field.getAsLongs();
526 else { // must be short
527 char temp[] = field.getAsChars();
528 offset = new long[temp.length];
529 for (int k = 0; k < temp.length; ++k)
530 offset[k] = temp[k];
531 }
532 return offset;
533 }
534
535 // Uncompress packbits compressed image data.
536 public static void decodePackbits(byte data[], byte[] dst) {
537 int srcCount = 0, dstCount = 0;
538 byte repeat, b;
539
540 try {
541 while (dstCount < dst.length) {
542 b = data[srcCount++];
543 if (b >= 0 && b <= 127) {
544 // literal run packet
545 for (int i=0; i<(b + 1); i++) {
546 dst[dstCount++] = data[srcCount++];
547 }
548
549 } else if (b <= -1 && b >= -127) {
550 // 2 byte encoded run packet
551 repeat = data[srcCount++];
552 for (int i=0; i<(-b + 1); i++) {
553 dst[dstCount++] = repeat;
554 }
555 } else {
556 // no-op packet. Do nothing
557 srcCount++;
558 }
559 }
560 }
561 catch (Exception e) {
562 // do nothing
563 }
564 }
565
566 public static void inflate(byte[] deflated, byte[] inflated) {
567 Inflater inflater = new Inflater();
568 inflater.setInput(deflated);
569 try {
570 inflater.inflate(inflated);
571 }
572 catch(DataFormatException dfe) {
573 throw new ExceptionConverter(dfe);
574 }
575 }
576
577 }
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