1 /* $Id: tif_getimage.c,v 1.114 2017-11-17 20:21:00 erouault Exp $ */
2
3 /*
4 * Copyright (c) 1991-1997 Sam Leffler
5 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
6 *
7 * Permission to use, copy, modify, distribute, and sell this software and
8 * its documentation for any purpose is hereby granted without fee, provided
9 * that (i) the above copyright notices and this permission notice appear in
10 * all copies of the software and related documentation, and (ii) the names of
11 * Sam Leffler and Silicon Graphics may not be used in any advertising or
12 * publicity relating to the software without the specific, prior written
13 * permission of Sam Leffler and Silicon Graphics.
14 *
15 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
16 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
17 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
18 *
19 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
20 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
21 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
22 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
23 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
24 * OF THIS SOFTWARE.
25 */
26
27 /*
28 * TIFF Library
29 *
30 * Read and return a packed RGBA image.
31 */
32 #include "tiffiop.h"
33 #include <stdio.h>
34
35 static int gtTileContig(TIFFRGBAImage*, uint32*, uint32, uint32);
36 static int gtTileSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
37 static int gtStripContig(TIFFRGBAImage*, uint32*, uint32, uint32);
38 static int gtStripSeparate(TIFFRGBAImage*, uint32*, uint32, uint32);
39 static int PickContigCase(TIFFRGBAImage*);
40 static int PickSeparateCase(TIFFRGBAImage*);
41
42 static int BuildMapUaToAa(TIFFRGBAImage* img);
43 static int BuildMapBitdepth16To8(TIFFRGBAImage* img);
44
45 static const char photoTag[] = "PhotometricInterpretation";
46
47 /*
48 * Helper constants used in Orientation tag handling
49 */
50 #define FLIP_VERTICALLY 0x01
51 #define FLIP_HORIZONTALLY 0x02
52
53 /*
54 * Color conversion constants. We will define display types here.
55 */
56
57 static const TIFFDisplay display_sRGB = {
58 { /* XYZ -> luminance matrix */
59 { 3.2410F, -1.5374F, -0.4986F },
60 { -0.9692F, 1.8760F, 0.0416F },
61 { 0.0556F, -0.2040F, 1.0570F }
62 },
63 100.0F, 100.0F, 100.0F, /* Light o/p for reference white */
64 255, 255, 255, /* Pixel values for ref. white */
65 1.0F, 1.0F, 1.0F, /* Residual light o/p for black pixel */
66 2.4F, 2.4F, 2.4F, /* Gamma values for the three guns */
67 };
68
69 /*
70 * Check the image to see if TIFFReadRGBAImage can deal with it.
71 * 1/0 is returned according to whether or not the image can
72 * be handled. If 0 is returned, emsg contains the reason
73 * why it is being rejected.
74 */
75 int
TIFFRGBAImageOK(TIFF * tif,char emsg[1024])76 TIFFRGBAImageOK(TIFF* tif, char emsg[1024])
77 {
78 TIFFDirectory* td = &tif->tif_dir;
79 uint16 photometric;
80 int colorchannels;
81
82 if (!tif->tif_decodestatus) {
83 sprintf(emsg, "Sorry, requested compression method is not configured");
84 return (0);
85 }
86 switch (td->td_bitspersample) {
87 case 1:
88 case 2:
89 case 4:
90 case 8:
91 case 16:
92 break;
93 default:
94 sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
95 td->td_bitspersample);
96 return (0);
97 }
98 if (td->td_sampleformat == SAMPLEFORMAT_IEEEFP) {
99 sprintf(emsg, "Sorry, can not handle images with IEEE floating-point samples");
100 return (0);
101 }
102 colorchannels = td->td_samplesperpixel - td->td_extrasamples;
103 if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) {
104 switch (colorchannels) {
105 case 1:
106 photometric = PHOTOMETRIC_MINISBLACK;
107 break;
108 case 3:
109 photometric = PHOTOMETRIC_RGB;
110 break;
111 default:
112 sprintf(emsg, "Missing needed %s tag", photoTag);
113 return (0);
114 }
115 }
116 switch (photometric) {
117 case PHOTOMETRIC_MINISWHITE:
118 case PHOTOMETRIC_MINISBLACK:
119 case PHOTOMETRIC_PALETTE:
120 if (td->td_planarconfig == PLANARCONFIG_CONTIG
121 && td->td_samplesperpixel != 1
122 && td->td_bitspersample < 8 ) {
123 sprintf(emsg,
124 "Sorry, can not handle contiguous data with %s=%d, "
125 "and %s=%d and Bits/Sample=%d",
126 photoTag, photometric,
127 "Samples/pixel", td->td_samplesperpixel,
128 td->td_bitspersample);
129 return (0);
130 }
131 /*
132 * We should likely validate that any extra samples are either
133 * to be ignored, or are alpha, and if alpha we should try to use
134 * them. But for now we won't bother with this.
135 */
136 break;
137 case PHOTOMETRIC_YCBCR:
138 /*
139 * TODO: if at all meaningful and useful, make more complete
140 * support check here, or better still, refactor to let supporting
141 * code decide whether there is support and what meaningful
142 * error to return
143 */
144 break;
145 case PHOTOMETRIC_RGB:
146 if (colorchannels < 3) {
147 sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
148 "Color channels", colorchannels);
149 return (0);
150 }
151 break;
152 case PHOTOMETRIC_SEPARATED:
153 {
154 uint16 inkset;
155 TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
156 if (inkset != INKSET_CMYK) {
157 sprintf(emsg,
158 "Sorry, can not handle separated image with %s=%d",
159 "InkSet", inkset);
160 return 0;
161 }
162 if (td->td_samplesperpixel < 4) {
163 sprintf(emsg,
164 "Sorry, can not handle separated image with %s=%d",
165 "Samples/pixel", td->td_samplesperpixel);
166 return 0;
167 }
168 break;
169 }
170 case PHOTOMETRIC_LOGL:
171 if (td->td_compression != COMPRESSION_SGILOG) {
172 sprintf(emsg, "Sorry, LogL data must have %s=%d",
173 "Compression", COMPRESSION_SGILOG);
174 return (0);
175 }
176 break;
177 case PHOTOMETRIC_LOGLUV:
178 if (td->td_compression != COMPRESSION_SGILOG &&
179 td->td_compression != COMPRESSION_SGILOG24) {
180 sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
181 "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
182 return (0);
183 }
184 if (td->td_planarconfig != PLANARCONFIG_CONTIG) {
185 sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
186 "Planarconfiguration", td->td_planarconfig);
187 return (0);
188 }
189 if ( td->td_samplesperpixel != 3 || colorchannels != 3 ) {
190 sprintf(emsg,
191 "Sorry, can not handle image with %s=%d, %s=%d",
192 "Samples/pixel", td->td_samplesperpixel,
193 "colorchannels", colorchannels);
194 return 0;
195 }
196 break;
197 case PHOTOMETRIC_CIELAB:
198 if ( td->td_samplesperpixel != 3 || colorchannels != 3 || td->td_bitspersample != 8 ) {
199 sprintf(emsg,
200 "Sorry, can not handle image with %s=%d, %s=%d and %s=%d",
201 "Samples/pixel", td->td_samplesperpixel,
202 "colorchannels", colorchannels,
203 "Bits/sample", td->td_bitspersample);
204 return 0;
205 }
206 break;
207 default:
208 sprintf(emsg, "Sorry, can not handle image with %s=%d",
209 photoTag, photometric);
210 return (0);
211 }
212 return (1);
213 }
214
215 void
TIFFRGBAImageEnd(TIFFRGBAImage * img)216 TIFFRGBAImageEnd(TIFFRGBAImage* img)
217 {
218 if (img->Map) {
219 _TIFFfree(img->Map);
220 img->Map = NULL;
221 }
222 if (img->BWmap) {
223 _TIFFfree(img->BWmap);
224 img->BWmap = NULL;
225 }
226 if (img->PALmap) {
227 _TIFFfree(img->PALmap);
228 img->PALmap = NULL;
229 }
230 if (img->ycbcr) {
231 _TIFFfree(img->ycbcr);
232 img->ycbcr = NULL;
233 }
234 if (img->cielab) {
235 _TIFFfree(img->cielab);
236 img->cielab = NULL;
237 }
238 if (img->UaToAa) {
239 _TIFFfree(img->UaToAa);
240 img->UaToAa = NULL;
241 }
242 if (img->Bitdepth16To8) {
243 _TIFFfree(img->Bitdepth16To8);
244 img->Bitdepth16To8 = NULL;
245 }
246
247 if( img->redcmap ) {
248 _TIFFfree( img->redcmap );
249 _TIFFfree( img->greencmap );
250 _TIFFfree( img->bluecmap );
251 img->redcmap = img->greencmap = img->bluecmap = NULL;
252 }
253 }
254
255 static int
isCCITTCompression(TIFF * tif)256 isCCITTCompression(TIFF* tif)
257 {
258 uint16 compress;
259 TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
260 return (compress == COMPRESSION_CCITTFAX3 ||
261 compress == COMPRESSION_CCITTFAX4 ||
262 compress == COMPRESSION_CCITTRLE ||
263 compress == COMPRESSION_CCITTRLEW);
264 }
265
266 int
TIFFRGBAImageBegin(TIFFRGBAImage * img,TIFF * tif,int stop,char emsg[1024])267 TIFFRGBAImageBegin(TIFFRGBAImage* img, TIFF* tif, int stop, char emsg[1024])
268 {
269 uint16* sampleinfo;
270 uint16 extrasamples;
271 uint16 planarconfig;
272 uint16 compress;
273 int colorchannels;
274 uint16 *red_orig, *green_orig, *blue_orig;
275 int n_color;
276
277 if( !TIFFRGBAImageOK(tif, emsg) )
278 return 0;
279
280 /* Initialize to normal values */
281 img->row_offset = 0;
282 img->col_offset = 0;
283 img->redcmap = NULL;
284 img->greencmap = NULL;
285 img->bluecmap = NULL;
286 img->Map = NULL;
287 img->BWmap = NULL;
288 img->PALmap = NULL;
289 img->ycbcr = NULL;
290 img->cielab = NULL;
291 img->UaToAa = NULL;
292 img->Bitdepth16To8 = NULL;
293 img->req_orientation = ORIENTATION_BOTLEFT; /* It is the default */
294
295 img->tif = tif;
296 img->stoponerr = stop;
297 TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample);
298 switch (img->bitspersample) {
299 case 1:
300 case 2:
301 case 4:
302 case 8:
303 case 16:
304 break;
305 default:
306 sprintf(emsg, "Sorry, can not handle images with %d-bit samples",
307 img->bitspersample);
308 goto fail_return;
309 }
310 img->alpha = 0;
311 TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel);
312 TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
313 &extrasamples, &sampleinfo);
314 if (extrasamples >= 1)
315 {
316 switch (sampleinfo[0]) {
317 case EXTRASAMPLE_UNSPECIFIED: /* Workaround for some images without */
318 if (img->samplesperpixel > 3) /* correct info about alpha channel */
319 img->alpha = EXTRASAMPLE_ASSOCALPHA;
320 break;
321 case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */
322 case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */
323 img->alpha = sampleinfo[0];
324 break;
325 }
326 }
327
328 #ifdef DEFAULT_EXTRASAMPLE_AS_ALPHA
329 if( !TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric))
330 img->photometric = PHOTOMETRIC_MINISWHITE;
331
332 if( extrasamples == 0
333 && img->samplesperpixel == 4
334 && img->photometric == PHOTOMETRIC_RGB )
335 {
336 img->alpha = EXTRASAMPLE_ASSOCALPHA;
337 extrasamples = 1;
338 }
339 #endif
340
341 colorchannels = img->samplesperpixel - extrasamples;
342 TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress);
343 TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig);
344 if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) {
345 switch (colorchannels) {
346 case 1:
347 if (isCCITTCompression(tif))
348 img->photometric = PHOTOMETRIC_MINISWHITE;
349 else
350 img->photometric = PHOTOMETRIC_MINISBLACK;
351 break;
352 case 3:
353 img->photometric = PHOTOMETRIC_RGB;
354 break;
355 default:
356 sprintf(emsg, "Missing needed %s tag", photoTag);
357 goto fail_return;
358 }
359 }
360 switch (img->photometric) {
361 case PHOTOMETRIC_PALETTE:
362 if (!TIFFGetField(tif, TIFFTAG_COLORMAP,
363 &red_orig, &green_orig, &blue_orig)) {
364 sprintf(emsg, "Missing required \"Colormap\" tag");
365 goto fail_return;
366 }
367
368 /* copy the colormaps so we can modify them */
369 n_color = (1U << img->bitspersample);
370 img->redcmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
371 img->greencmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
372 img->bluecmap = (uint16 *) _TIFFmalloc(sizeof(uint16)*n_color);
373 if( !img->redcmap || !img->greencmap || !img->bluecmap ) {
374 sprintf(emsg, "Out of memory for colormap copy");
375 goto fail_return;
376 }
377
378 _TIFFmemcpy( img->redcmap, red_orig, n_color * 2 );
379 _TIFFmemcpy( img->greencmap, green_orig, n_color * 2 );
380 _TIFFmemcpy( img->bluecmap, blue_orig, n_color * 2 );
381
382 /* fall through... */
383 case PHOTOMETRIC_MINISWHITE:
384 case PHOTOMETRIC_MINISBLACK:
385 if (planarconfig == PLANARCONFIG_CONTIG
386 && img->samplesperpixel != 1
387 && img->bitspersample < 8 ) {
388 sprintf(emsg,
389 "Sorry, can not handle contiguous data with %s=%d, "
390 "and %s=%d and Bits/Sample=%d",
391 photoTag, img->photometric,
392 "Samples/pixel", img->samplesperpixel,
393 img->bitspersample);
394 goto fail_return;
395 }
396 break;
397 case PHOTOMETRIC_YCBCR:
398 /* It would probably be nice to have a reality check here. */
399 if (planarconfig == PLANARCONFIG_CONTIG)
400 /* can rely on libjpeg to convert to RGB */
401 /* XXX should restore current state on exit */
402 switch (compress) {
403 case COMPRESSION_JPEG:
404 /*
405 * TODO: when complete tests verify complete desubsampling
406 * and YCbCr handling, remove use of TIFFTAG_JPEGCOLORMODE in
407 * favor of tif_getimage.c native handling
408 */
409 TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, JPEGCOLORMODE_RGB);
410 img->photometric = PHOTOMETRIC_RGB;
411 break;
412 default:
413 /* do nothing */;
414 break;
415 }
416 /*
417 * TODO: if at all meaningful and useful, make more complete
418 * support check here, or better still, refactor to let supporting
419 * code decide whether there is support and what meaningful
420 * error to return
421 */
422 break;
423 case PHOTOMETRIC_RGB:
424 if (colorchannels < 3) {
425 sprintf(emsg, "Sorry, can not handle RGB image with %s=%d",
426 "Color channels", colorchannels);
427 goto fail_return;
428 }
429 break;
430 case PHOTOMETRIC_SEPARATED:
431 {
432 uint16 inkset;
433 TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset);
434 if (inkset != INKSET_CMYK) {
435 sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
436 "InkSet", inkset);
437 goto fail_return;
438 }
439 if (img->samplesperpixel < 4) {
440 sprintf(emsg, "Sorry, can not handle separated image with %s=%d",
441 "Samples/pixel", img->samplesperpixel);
442 goto fail_return;
443 }
444 }
445 break;
446 case PHOTOMETRIC_LOGL:
447 if (compress != COMPRESSION_SGILOG) {
448 sprintf(emsg, "Sorry, LogL data must have %s=%d",
449 "Compression", COMPRESSION_SGILOG);
450 goto fail_return;
451 }
452 TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
453 img->photometric = PHOTOMETRIC_MINISBLACK; /* little white lie */
454 img->bitspersample = 8;
455 break;
456 case PHOTOMETRIC_LOGLUV:
457 if (compress != COMPRESSION_SGILOG && compress != COMPRESSION_SGILOG24) {
458 sprintf(emsg, "Sorry, LogLuv data must have %s=%d or %d",
459 "Compression", COMPRESSION_SGILOG, COMPRESSION_SGILOG24);
460 goto fail_return;
461 }
462 if (planarconfig != PLANARCONFIG_CONTIG) {
463 sprintf(emsg, "Sorry, can not handle LogLuv images with %s=%d",
464 "Planarconfiguration", planarconfig);
465 return (0);
466 }
467 TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
468 img->photometric = PHOTOMETRIC_RGB; /* little white lie */
469 img->bitspersample = 8;
470 break;
471 case PHOTOMETRIC_CIELAB:
472 break;
473 default:
474 sprintf(emsg, "Sorry, can not handle image with %s=%d",
475 photoTag, img->photometric);
476 goto fail_return;
477 }
478 TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width);
479 TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height);
480 TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation);
481 img->isContig =
482 !(planarconfig == PLANARCONFIG_SEPARATE && img->samplesperpixel > 1);
483 if (img->isContig) {
484 if (!PickContigCase(img)) {
485 sprintf(emsg, "Sorry, can not handle image");
486 goto fail_return;
487 }
488 } else {
489 if (!PickSeparateCase(img)) {
490 sprintf(emsg, "Sorry, can not handle image");
491 goto fail_return;
492 }
493 }
494 return 1;
495
496 fail_return:
497 TIFFRGBAImageEnd( img );
498 return 0;
499 }
500
501 int
TIFFRGBAImageGet(TIFFRGBAImage * img,uint32 * raster,uint32 w,uint32 h)502 TIFFRGBAImageGet(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
503 {
504 if (img->get == NULL) {
505 TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No \"get\" routine setup");
506 return (0);
507 }
508 if (img->put.any == NULL) {
509 TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
510 "No \"put\" routine setupl; probably can not handle image format");
511 return (0);
512 }
513 return (*img->get)(img, raster, w, h);
514 }
515
516 /*
517 * Read the specified image into an ABGR-format rastertaking in account
518 * specified orientation.
519 */
520 int
TIFFReadRGBAImageOriented(TIFF * tif,uint32 rwidth,uint32 rheight,uint32 * raster,int orientation,int stop)521 TIFFReadRGBAImageOriented(TIFF* tif,
522 uint32 rwidth, uint32 rheight, uint32* raster,
523 int orientation, int stop)
524 {
525 char emsg[1024] = "";
526 TIFFRGBAImage img;
527 int ok;
528
529 if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop, emsg)) {
530 img.req_orientation = (uint16)orientation;
531 /* XXX verify rwidth and rheight against width and height */
532 ok = TIFFRGBAImageGet(&img, raster+(rheight-img.height)*rwidth,
533 rwidth, img.height);
534 TIFFRGBAImageEnd(&img);
535 } else {
536 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
537 ok = 0;
538 }
539 return (ok);
540 }
541
542 /*
543 * Read the specified image into an ABGR-format raster. Use bottom left
544 * origin for raster by default.
545 */
546 int
TIFFReadRGBAImage(TIFF * tif,uint32 rwidth,uint32 rheight,uint32 * raster,int stop)547 TIFFReadRGBAImage(TIFF* tif,
548 uint32 rwidth, uint32 rheight, uint32* raster, int stop)
549 {
550 return TIFFReadRGBAImageOriented(tif, rwidth, rheight, raster,
551 ORIENTATION_BOTLEFT, stop);
552 }
553
554 static int
setorientation(TIFFRGBAImage * img)555 setorientation(TIFFRGBAImage* img)
556 {
557 switch (img->orientation) {
558 case ORIENTATION_TOPLEFT:
559 case ORIENTATION_LEFTTOP:
560 if (img->req_orientation == ORIENTATION_TOPRIGHT ||
561 img->req_orientation == ORIENTATION_RIGHTTOP)
562 return FLIP_HORIZONTALLY;
563 else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
564 img->req_orientation == ORIENTATION_RIGHTBOT)
565 return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
566 else if (img->req_orientation == ORIENTATION_BOTLEFT ||
567 img->req_orientation == ORIENTATION_LEFTBOT)
568 return FLIP_VERTICALLY;
569 else
570 return 0;
571 case ORIENTATION_TOPRIGHT:
572 case ORIENTATION_RIGHTTOP:
573 if (img->req_orientation == ORIENTATION_TOPLEFT ||
574 img->req_orientation == ORIENTATION_LEFTTOP)
575 return FLIP_HORIZONTALLY;
576 else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
577 img->req_orientation == ORIENTATION_RIGHTBOT)
578 return FLIP_VERTICALLY;
579 else if (img->req_orientation == ORIENTATION_BOTLEFT ||
580 img->req_orientation == ORIENTATION_LEFTBOT)
581 return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
582 else
583 return 0;
584 case ORIENTATION_BOTRIGHT:
585 case ORIENTATION_RIGHTBOT:
586 if (img->req_orientation == ORIENTATION_TOPLEFT ||
587 img->req_orientation == ORIENTATION_LEFTTOP)
588 return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
589 else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
590 img->req_orientation == ORIENTATION_RIGHTTOP)
591 return FLIP_VERTICALLY;
592 else if (img->req_orientation == ORIENTATION_BOTLEFT ||
593 img->req_orientation == ORIENTATION_LEFTBOT)
594 return FLIP_HORIZONTALLY;
595 else
596 return 0;
597 case ORIENTATION_BOTLEFT:
598 case ORIENTATION_LEFTBOT:
599 if (img->req_orientation == ORIENTATION_TOPLEFT ||
600 img->req_orientation == ORIENTATION_LEFTTOP)
601 return FLIP_VERTICALLY;
602 else if (img->req_orientation == ORIENTATION_TOPRIGHT ||
603 img->req_orientation == ORIENTATION_RIGHTTOP)
604 return FLIP_HORIZONTALLY | FLIP_VERTICALLY;
605 else if (img->req_orientation == ORIENTATION_BOTRIGHT ||
606 img->req_orientation == ORIENTATION_RIGHTBOT)
607 return FLIP_HORIZONTALLY;
608 else
609 return 0;
610 default: /* NOTREACHED */
611 return 0;
612 }
613 }
614
615 /*
616 * Get an tile-organized image that has
617 * PlanarConfiguration contiguous if SamplesPerPixel > 1
618 * or
619 * SamplesPerPixel == 1
620 */
621 static int
gtTileContig(TIFFRGBAImage * img,uint32 * raster,uint32 w,uint32 h)622 gtTileContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
623 {
624 TIFF* tif = img->tif;
625 tileContigRoutine put = img->put.contig;
626 uint32 col, row, y, rowstoread;
627 tmsize_t pos;
628 uint32 tw, th;
629 unsigned char* buf = NULL;
630 int32 fromskew, toskew;
631 uint32 nrow;
632 int ret = 1, flip;
633 uint32 this_tw, tocol;
634 int32 this_toskew, leftmost_toskew;
635 int32 leftmost_fromskew;
636 uint32 leftmost_tw;
637 tmsize_t bufsize;
638
639 bufsize = TIFFTileSize(tif);
640 if (bufsize == 0) {
641 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", "No space for tile buffer");
642 return (0);
643 }
644
645 TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
646 TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
647
648 flip = setorientation(img);
649 if (flip & FLIP_VERTICALLY) {
650 y = h - 1;
651 toskew = -(int32)(tw + w);
652 }
653 else {
654 y = 0;
655 toskew = -(int32)(tw - w);
656 }
657
658 /*
659 * Leftmost tile is clipped on left side if col_offset > 0.
660 */
661 leftmost_fromskew = img->col_offset % tw;
662 leftmost_tw = tw - leftmost_fromskew;
663 leftmost_toskew = toskew + leftmost_fromskew;
664 for (row = 0; ret != 0 && row < h; row += nrow)
665 {
666 rowstoread = th - (row + img->row_offset) % th;
667 nrow = (row + rowstoread > h ? h - row : rowstoread);
668 fromskew = leftmost_fromskew;
669 this_tw = leftmost_tw;
670 this_toskew = leftmost_toskew;
671 tocol = 0;
672 col = img->col_offset;
673 while (tocol < w)
674 {
675 if (_TIFFReadTileAndAllocBuffer(tif, (void**) &buf, bufsize, col,
676 row+img->row_offset, 0, 0)==(tmsize_t)(-1) &&
677 (buf == NULL || img->stoponerr))
678 {
679 ret = 0;
680 break;
681 }
682 pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif) + \
683 ((tmsize_t) fromskew * img->samplesperpixel);
684 if (tocol + this_tw > w)
685 {
686 /*
687 * Rightmost tile is clipped on right side.
688 */
689 fromskew = tw - (w - tocol);
690 this_tw = tw - fromskew;
691 this_toskew = toskew + fromskew;
692 }
693 (*put)(img, raster+y*w+tocol, tocol, y, this_tw, nrow, fromskew, this_toskew, buf + pos);
694 tocol += this_tw;
695 col += this_tw;
696 /*
697 * After the leftmost tile, tiles are no longer clipped on left side.
698 */
699 fromskew = 0;
700 this_tw = tw;
701 this_toskew = toskew;
702 }
703
704 y += ((flip & FLIP_VERTICALLY) ? -(int32) nrow : (int32) nrow);
705 }
706 _TIFFfree(buf);
707
708 if (flip & FLIP_HORIZONTALLY) {
709 uint32 line;
710
711 for (line = 0; line < h; line++) {
712 uint32 *left = raster + (line * w);
713 uint32 *right = left + w - 1;
714
715 while ( left < right ) {
716 uint32 temp = *left;
717 *left = *right;
718 *right = temp;
719 left++;
720 right--;
721 }
722 }
723 }
724
725 return (ret);
726 }
727
728 /*
729 * Get an tile-organized image that has
730 * SamplesPerPixel > 1
731 * PlanarConfiguration separated
732 * We assume that all such images are RGB.
733 */
734 static int
gtTileSeparate(TIFFRGBAImage * img,uint32 * raster,uint32 w,uint32 h)735 gtTileSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
736 {
737 TIFF* tif = img->tif;
738 tileSeparateRoutine put = img->put.separate;
739 uint32 col, row, y, rowstoread;
740 tmsize_t pos;
741 uint32 tw, th;
742 unsigned char* buf = NULL;
743 unsigned char* p0 = NULL;
744 unsigned char* p1 = NULL;
745 unsigned char* p2 = NULL;
746 unsigned char* pa = NULL;
747 tmsize_t tilesize;
748 tmsize_t bufsize;
749 int32 fromskew, toskew;
750 int alpha = img->alpha;
751 uint32 nrow;
752 int ret = 1, flip;
753 uint16 colorchannels;
754 uint32 this_tw, tocol;
755 int32 this_toskew, leftmost_toskew;
756 int32 leftmost_fromskew;
757 uint32 leftmost_tw;
758
759 tilesize = TIFFTileSize(tif);
760 bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,tilesize);
761 if (bufsize == 0) {
762 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtTileSeparate");
763 return (0);
764 }
765
766 TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw);
767 TIFFGetField(tif, TIFFTAG_TILELENGTH, &th);
768
769 flip = setorientation(img);
770 if (flip & FLIP_VERTICALLY) {
771 y = h - 1;
772 toskew = -(int32)(tw + w);
773 }
774 else {
775 y = 0;
776 toskew = -(int32)(tw - w);
777 }
778
779 switch( img->photometric )
780 {
781 case PHOTOMETRIC_MINISWHITE:
782 case PHOTOMETRIC_MINISBLACK:
783 case PHOTOMETRIC_PALETTE:
784 colorchannels = 1;
785 break;
786
787 default:
788 colorchannels = 3;
789 break;
790 }
791
792 /*
793 * Leftmost tile is clipped on left side if col_offset > 0.
794 */
795 leftmost_fromskew = img->col_offset % tw;
796 leftmost_tw = tw - leftmost_fromskew;
797 leftmost_toskew = toskew + leftmost_fromskew;
798 for (row = 0; ret != 0 && row < h; row += nrow)
799 {
800 rowstoread = th - (row + img->row_offset) % th;
801 nrow = (row + rowstoread > h ? h - row : rowstoread);
802 fromskew = leftmost_fromskew;
803 this_tw = leftmost_tw;
804 this_toskew = leftmost_toskew;
805 tocol = 0;
806 col = img->col_offset;
807 while (tocol < w)
808 {
809 if( buf == NULL )
810 {
811 if (_TIFFReadTileAndAllocBuffer(
812 tif, (void**) &buf, bufsize, col,
813 row+img->row_offset,0,0)==(tmsize_t)(-1)
814 && (buf == NULL || img->stoponerr))
815 {
816 ret = 0;
817 break;
818 }
819 p0 = buf;
820 if( colorchannels == 1 )
821 {
822 p2 = p1 = p0;
823 pa = (alpha?(p0+3*tilesize):NULL);
824 }
825 else
826 {
827 p1 = p0 + tilesize;
828 p2 = p1 + tilesize;
829 pa = (alpha?(p2+tilesize):NULL);
830 }
831 }
832 else if (TIFFReadTile(tif, p0, col,
833 row+img->row_offset,0,0)==(tmsize_t)(-1) && img->stoponerr)
834 {
835 ret = 0;
836 break;
837 }
838 if (colorchannels > 1
839 && TIFFReadTile(tif, p1, col,
840 row+img->row_offset,0,1) == (tmsize_t)(-1)
841 && img->stoponerr)
842 {
843 ret = 0;
844 break;
845 }
846 if (colorchannels > 1
847 && TIFFReadTile(tif, p2, col,
848 row+img->row_offset,0,2) == (tmsize_t)(-1)
849 && img->stoponerr)
850 {
851 ret = 0;
852 break;
853 }
854 if (alpha
855 && TIFFReadTile(tif,pa,col,
856 row+img->row_offset,0,colorchannels) == (tmsize_t)(-1)
857 && img->stoponerr)
858 {
859 ret = 0;
860 break;
861 }
862
863 pos = ((row+img->row_offset) % th) * TIFFTileRowSize(tif) + \
864 ((tmsize_t) fromskew * img->samplesperpixel);
865 if (tocol + this_tw > w)
866 {
867 /*
868 * Rightmost tile is clipped on right side.
869 */
870 fromskew = tw - (w - tocol);
871 this_tw = tw - fromskew;
872 this_toskew = toskew + fromskew;
873 }
874 (*put)(img, raster+y*w+tocol, tocol, y, this_tw, nrow, fromskew, this_toskew, \
875 p0 + pos, p1 + pos, p2 + pos, (alpha?(pa+pos):NULL));
876 tocol += this_tw;
877 col += this_tw;
878 /*
879 * After the leftmost tile, tiles are no longer clipped on left side.
880 */
881 fromskew = 0;
882 this_tw = tw;
883 this_toskew = toskew;
884 }
885
886 y += ((flip & FLIP_VERTICALLY) ?-(int32) nrow : (int32) nrow);
887 }
888
889 if (flip & FLIP_HORIZONTALLY) {
890 uint32 line;
891
892 for (line = 0; line < h; line++) {
893 uint32 *left = raster + (line * w);
894 uint32 *right = left + w - 1;
895
896 while ( left < right ) {
897 uint32 temp = *left;
898 *left = *right;
899 *right = temp;
900 left++;
901 right--;
902 }
903 }
904 }
905
906 _TIFFfree(buf);
907 return (ret);
908 }
909
910 /*
911 * Get a strip-organized image that has
912 * PlanarConfiguration contiguous if SamplesPerPixel > 1
913 * or
914 * SamplesPerPixel == 1
915 */
916 static int
gtStripContig(TIFFRGBAImage * img,uint32 * raster,uint32 w,uint32 h)917 gtStripContig(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
918 {
919 TIFF* tif = img->tif;
920 tileContigRoutine put = img->put.contig;
921 uint32 row, y, nrow, nrowsub, rowstoread;
922 tmsize_t pos;
923 unsigned char* buf = NULL;
924 uint32 rowsperstrip;
925 uint16 subsamplinghor,subsamplingver;
926 uint32 imagewidth = img->width;
927 tmsize_t scanline;
928 int32 fromskew, toskew;
929 int ret = 1, flip;
930 tmsize_t maxstripsize;
931
932 TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, &subsamplingver);
933 if( subsamplingver == 0 ) {
934 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Invalid vertical YCbCr subsampling");
935 return (0);
936 }
937
938 maxstripsize = TIFFStripSize(tif);
939
940 flip = setorientation(img);
941 if (flip & FLIP_VERTICALLY) {
942 y = h - 1;
943 toskew = -(int32)(w + w);
944 } else {
945 y = 0;
946 toskew = -(int32)(w - w);
947 }
948
949 TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
950
951 scanline = TIFFScanlineSize(tif);
952 fromskew = (w < imagewidth ? imagewidth - w : 0);
953 for (row = 0; row < h; row += nrow)
954 {
955 rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
956 nrow = (row + rowstoread > h ? h - row : rowstoread);
957 nrowsub = nrow;
958 if ((nrowsub%subsamplingver)!=0)
959 nrowsub+=subsamplingver-nrowsub%subsamplingver;
960 if (_TIFFReadEncodedStripAndAllocBuffer(tif,
961 TIFFComputeStrip(tif,row+img->row_offset, 0),
962 (void**)(&buf),
963 maxstripsize,
964 ((row + img->row_offset)%rowsperstrip + nrowsub) * scanline)==(tmsize_t)(-1)
965 && (buf == NULL || img->stoponerr))
966 {
967 ret = 0;
968 break;
969 }
970
971 pos = ((row + img->row_offset) % rowsperstrip) * scanline + \
972 ((tmsize_t) img->col_offset * img->samplesperpixel);
973 (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, buf + pos);
974 y += ((flip & FLIP_VERTICALLY) ? -(int32) nrow : (int32) nrow);
975 }
976
977 if (flip & FLIP_HORIZONTALLY) {
978 uint32 line;
979
980 for (line = 0; line < h; line++) {
981 uint32 *left = raster + (line * w);
982 uint32 *right = left + w - 1;
983
984 while ( left < right ) {
985 uint32 temp = *left;
986 *left = *right;
987 *right = temp;
988 left++;
989 right--;
990 }
991 }
992 }
993
994 _TIFFfree(buf);
995 return (ret);
996 }
997
998 /*
999 * Get a strip-organized image with
1000 * SamplesPerPixel > 1
1001 * PlanarConfiguration separated
1002 * We assume that all such images are RGB.
1003 */
1004 static int
gtStripSeparate(TIFFRGBAImage * img,uint32 * raster,uint32 w,uint32 h)1005 gtStripSeparate(TIFFRGBAImage* img, uint32* raster, uint32 w, uint32 h)
1006 {
1007 TIFF* tif = img->tif;
1008 tileSeparateRoutine put = img->put.separate;
1009 unsigned char *buf = NULL;
1010 unsigned char *p0 = NULL, *p1 = NULL, *p2 = NULL, *pa = NULL;
1011 uint32 row, y, nrow, rowstoread;
1012 tmsize_t pos;
1013 tmsize_t scanline;
1014 uint32 rowsperstrip, offset_row;
1015 uint32 imagewidth = img->width;
1016 tmsize_t stripsize;
1017 tmsize_t bufsize;
1018 int32 fromskew, toskew;
1019 int alpha = img->alpha;
1020 int ret = 1, flip;
1021 uint16 colorchannels;
1022
1023 stripsize = TIFFStripSize(tif);
1024 bufsize = TIFFSafeMultiply(tmsize_t,alpha?4:3,stripsize);
1025 if (bufsize == 0) {
1026 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "Integer overflow in %s", "gtStripSeparate");
1027 return (0);
1028 }
1029
1030 flip = setorientation(img);
1031 if (flip & FLIP_VERTICALLY) {
1032 y = h - 1;
1033 toskew = -(int32)(w + w);
1034 }
1035 else {
1036 y = 0;
1037 toskew = -(int32)(w - w);
1038 }
1039
1040 switch( img->photometric )
1041 {
1042 case PHOTOMETRIC_MINISWHITE:
1043 case PHOTOMETRIC_MINISBLACK:
1044 case PHOTOMETRIC_PALETTE:
1045 colorchannels = 1;
1046 break;
1047
1048 default:
1049 colorchannels = 3;
1050 break;
1051 }
1052
1053 TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
1054 scanline = TIFFScanlineSize(tif);
1055 fromskew = (w < imagewidth ? imagewidth - w : 0);
1056 for (row = 0; row < h; row += nrow)
1057 {
1058 rowstoread = rowsperstrip - (row + img->row_offset) % rowsperstrip;
1059 nrow = (row + rowstoread > h ? h - row : rowstoread);
1060 offset_row = row + img->row_offset;
1061 if( buf == NULL )
1062 {
1063 if (_TIFFReadEncodedStripAndAllocBuffer(
1064 tif, TIFFComputeStrip(tif, offset_row, 0),
1065 (void**) &buf, bufsize,
1066 ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
1067 && (buf == NULL || img->stoponerr))
1068 {
1069 ret = 0;
1070 break;
1071 }
1072 p0 = buf;
1073 if( colorchannels == 1 )
1074 {
1075 p2 = p1 = p0;
1076 pa = (alpha?(p0+3*stripsize):NULL);
1077 }
1078 else
1079 {
1080 p1 = p0 + stripsize;
1081 p2 = p1 + stripsize;
1082 pa = (alpha?(p2+stripsize):NULL);
1083 }
1084 }
1085 else if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0),
1086 p0, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
1087 && img->stoponerr)
1088 {
1089 ret = 0;
1090 break;
1091 }
1092 if (colorchannels > 1
1093 && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1),
1094 p1, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1)
1095 && img->stoponerr)
1096 {
1097 ret = 0;
1098 break;
1099 }
1100 if (colorchannels > 1
1101 && TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2),
1102 p2, ((row + img->row_offset)%rowsperstrip + nrow) * scanline) == (tmsize_t)(-1)
1103 && img->stoponerr)
1104 {
1105 ret = 0;
1106 break;
1107 }
1108 if (alpha)
1109 {
1110 if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, colorchannels),
1111 pa, ((row + img->row_offset)%rowsperstrip + nrow) * scanline)==(tmsize_t)(-1)
1112 && img->stoponerr)
1113 {
1114 ret = 0;
1115 break;
1116 }
1117 }
1118
1119 pos = ((row + img->row_offset) % rowsperstrip) * scanline + \
1120 ((tmsize_t) img->col_offset * img->samplesperpixel);
1121 (*put)(img, raster+y*w, 0, y, w, nrow, fromskew, toskew, p0 + pos, p1 + pos,
1122 p2 + pos, (alpha?(pa+pos):NULL));
1123 y += ((flip & FLIP_VERTICALLY) ? -(int32) nrow : (int32) nrow);
1124 }
1125
1126 if (flip & FLIP_HORIZONTALLY) {
1127 uint32 line;
1128
1129 for (line = 0; line < h; line++) {
1130 uint32 *left = raster + (line * w);
1131 uint32 *right = left + w - 1;
1132
1133 while ( left < right ) {
1134 uint32 temp = *left;
1135 *left = *right;
1136 *right = temp;
1137 left++;
1138 right--;
1139 }
1140 }
1141 }
1142
1143 _TIFFfree(buf);
1144 return (ret);
1145 }
1146
1147 /*
1148 * The following routines move decoded data returned
1149 * from the TIFF library into rasters filled with packed
1150 * ABGR pixels (i.e. suitable for passing to lrecwrite.)
1151 *
1152 * The routines have been created according to the most
1153 * important cases and optimized. PickContigCase and
1154 * PickSeparateCase analyze the parameters and select
1155 * the appropriate "get" and "put" routine to use.
1156 */
1157 #define REPEAT8(op) REPEAT4(op); REPEAT4(op)
1158 #define REPEAT4(op) REPEAT2(op); REPEAT2(op)
1159 #define REPEAT2(op) op; op
1160 #define CASE8(x,op) \
1161 switch (x) { \
1162 case 7: op; /*-fallthrough*/ \
1163 case 6: op; /*-fallthrough*/ \
1164 case 5: op; /*-fallthrough*/ \
1165 case 4: op; /*-fallthrough*/ \
1166 case 3: op; /*-fallthrough*/ \
1167 case 2: op; /*-fallthrough*/ \
1168 case 1: op; \
1169 }
1170 #define CASE4(x,op) switch (x) { case 3: op; /*-fallthrough*/ case 2: op; /*-fallthrough*/ case 1: op; }
1171 #define NOP
1172
1173 #define UNROLL8(w, op1, op2) { \
1174 uint32 _x; \
1175 for (_x = w; _x >= 8; _x -= 8) { \
1176 op1; \
1177 REPEAT8(op2); \
1178 } \
1179 if (_x > 0) { \
1180 op1; \
1181 CASE8(_x,op2); \
1182 } \
1183 }
1184 #define UNROLL4(w, op1, op2) { \
1185 uint32 _x; \
1186 for (_x = w; _x >= 4; _x -= 4) { \
1187 op1; \
1188 REPEAT4(op2); \
1189 } \
1190 if (_x > 0) { \
1191 op1; \
1192 CASE4(_x,op2); \
1193 } \
1194 }
1195 #define UNROLL2(w, op1, op2) { \
1196 uint32 _x; \
1197 for (_x = w; _x >= 2; _x -= 2) { \
1198 op1; \
1199 REPEAT2(op2); \
1200 } \
1201 if (_x) { \
1202 op1; \
1203 op2; \
1204 } \
1205 }
1206
1207 #define SKEW(r,g,b,skew) { r += skew; g += skew; b += skew; }
1208 #define SKEW4(r,g,b,a,skew) { r += skew; g += skew; b += skew; a+= skew; }
1209
1210 #define A1 (((uint32)0xffL)<<24)
1211 #define PACK(r,g,b) \
1212 ((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|A1)
1213 #define PACK4(r,g,b,a) \
1214 ((uint32)(r)|((uint32)(g)<<8)|((uint32)(b)<<16)|((uint32)(a)<<24))
1215 #define W2B(v) (((v)>>8)&0xff)
1216 /* TODO: PACKW should have be made redundant in favor of Bitdepth16To8 LUT */
1217 #define PACKW(r,g,b) \
1218 ((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|A1)
1219 #define PACKW4(r,g,b,a) \
1220 ((uint32)W2B(r)|((uint32)W2B(g)<<8)|((uint32)W2B(b)<<16)|((uint32)W2B(a)<<24))
1221
1222 #define DECLAREContigPutFunc(name) \
1223 static void name(\
1224 TIFFRGBAImage* img, \
1225 uint32* cp, \
1226 uint32 x, uint32 y, \
1227 uint32 w, uint32 h, \
1228 int32 fromskew, int32 toskew, \
1229 unsigned char* pp \
1230 )
1231
1232 /*
1233 * 8-bit palette => colormap/RGB
1234 */
DECLAREContigPutFunc(put8bitcmaptile)1235 DECLAREContigPutFunc(put8bitcmaptile)
1236 {
1237 uint32** PALmap = img->PALmap;
1238 int samplesperpixel = img->samplesperpixel;
1239
1240 (void) y;
1241 for( ; h > 0; --h) {
1242 for (x = w; x > 0; --x)
1243 {
1244 *cp++ = PALmap[*pp][0];
1245 pp += samplesperpixel;
1246 }
1247 cp += toskew;
1248 pp += fromskew;
1249 }
1250 }
1251
1252 /*
1253 * 4-bit palette => colormap/RGB
1254 */
DECLAREContigPutFunc(put4bitcmaptile)1255 DECLAREContigPutFunc(put4bitcmaptile)
1256 {
1257 uint32** PALmap = img->PALmap;
1258
1259 (void) x; (void) y;
1260 fromskew /= 2;
1261 for( ; h > 0; --h) {
1262 uint32* bw;
1263 UNROLL2(w, bw = PALmap[*pp++], *cp++ = *bw++);
1264 cp += toskew;
1265 pp += fromskew;
1266 }
1267 }
1268
1269 /*
1270 * 2-bit palette => colormap/RGB
1271 */
DECLAREContigPutFunc(put2bitcmaptile)1272 DECLAREContigPutFunc(put2bitcmaptile)
1273 {
1274 uint32** PALmap = img->PALmap;
1275
1276 (void) x; (void) y;
1277 fromskew /= 4;
1278 for( ; h > 0; --h) {
1279 uint32* bw;
1280 UNROLL4(w, bw = PALmap[*pp++], *cp++ = *bw++);
1281 cp += toskew;
1282 pp += fromskew;
1283 }
1284 }
1285
1286 /*
1287 * 1-bit palette => colormap/RGB
1288 */
DECLAREContigPutFunc(put1bitcmaptile)1289 DECLAREContigPutFunc(put1bitcmaptile)
1290 {
1291 uint32** PALmap = img->PALmap;
1292
1293 (void) x; (void) y;
1294 fromskew /= 8;
1295 for( ; h > 0; --h) {
1296 uint32* bw;
1297 UNROLL8(w, bw = PALmap[*pp++], *cp++ = *bw++);
1298 cp += toskew;
1299 pp += fromskew;
1300 }
1301 }
1302
1303 /*
1304 * 8-bit greyscale => colormap/RGB
1305 */
DECLAREContigPutFunc(putgreytile)1306 DECLAREContigPutFunc(putgreytile)
1307 {
1308 int samplesperpixel = img->samplesperpixel;
1309 uint32** BWmap = img->BWmap;
1310
1311 (void) y;
1312 for( ; h > 0; --h) {
1313 for (x = w; x > 0; --x)
1314 {
1315 *cp++ = BWmap[*pp][0];
1316 pp += samplesperpixel;
1317 }
1318 cp += toskew;
1319 pp += fromskew;
1320 }
1321 }
1322
1323 /*
1324 * 8-bit greyscale with associated alpha => colormap/RGBA
1325 */
DECLAREContigPutFunc(putagreytile)1326 DECLAREContigPutFunc(putagreytile)
1327 {
1328 int samplesperpixel = img->samplesperpixel;
1329 uint32** BWmap = img->BWmap;
1330
1331 (void) y;
1332 for( ; h > 0; --h) {
1333 for (x = w; x > 0; --x)
1334 {
1335 *cp++ = BWmap[*pp][0] & ((uint32)*(pp+1) << 24 | ~A1);
1336 pp += samplesperpixel;
1337 }
1338 cp += toskew;
1339 pp += fromskew;
1340 }
1341 }
1342
1343 /*
1344 * 16-bit greyscale => colormap/RGB
1345 */
DECLAREContigPutFunc(put16bitbwtile)1346 DECLAREContigPutFunc(put16bitbwtile)
1347 {
1348 int samplesperpixel = img->samplesperpixel;
1349 uint32** BWmap = img->BWmap;
1350
1351 (void) y;
1352 for( ; h > 0; --h) {
1353 uint16 *wp = (uint16 *) pp;
1354
1355 for (x = w; x > 0; --x)
1356 {
1357 /* use high order byte of 16bit value */
1358
1359 *cp++ = BWmap[*wp >> 8][0];
1360 pp += 2 * samplesperpixel;
1361 wp += samplesperpixel;
1362 }
1363 cp += toskew;
1364 pp += fromskew;
1365 }
1366 }
1367
1368 /*
1369 * 1-bit bilevel => colormap/RGB
1370 */
DECLAREContigPutFunc(put1bitbwtile)1371 DECLAREContigPutFunc(put1bitbwtile)
1372 {
1373 uint32** BWmap = img->BWmap;
1374
1375 (void) x; (void) y;
1376 fromskew /= 8;
1377 for( ; h > 0; --h) {
1378 uint32* bw;
1379 UNROLL8(w, bw = BWmap[*pp++], *cp++ = *bw++);
1380 cp += toskew;
1381 pp += fromskew;
1382 }
1383 }
1384
1385 /*
1386 * 2-bit greyscale => colormap/RGB
1387 */
DECLAREContigPutFunc(put2bitbwtile)1388 DECLAREContigPutFunc(put2bitbwtile)
1389 {
1390 uint32** BWmap = img->BWmap;
1391
1392 (void) x; (void) y;
1393 fromskew /= 4;
1394 for( ; h > 0; --h) {
1395 uint32* bw;
1396 UNROLL4(w, bw = BWmap[*pp++], *cp++ = *bw++);
1397 cp += toskew;
1398 pp += fromskew;
1399 }
1400 }
1401
1402 /*
1403 * 4-bit greyscale => colormap/RGB
1404 */
DECLAREContigPutFunc(put4bitbwtile)1405 DECLAREContigPutFunc(put4bitbwtile)
1406 {
1407 uint32** BWmap = img->BWmap;
1408
1409 (void) x; (void) y;
1410 fromskew /= 2;
1411 for( ; h > 0; --h) {
1412 uint32* bw;
1413 UNROLL2(w, bw = BWmap[*pp++], *cp++ = *bw++);
1414 cp += toskew;
1415 pp += fromskew;
1416 }
1417 }
1418
1419 /*
1420 * 8-bit packed samples, no Map => RGB
1421 */
DECLAREContigPutFunc(putRGBcontig8bittile)1422 DECLAREContigPutFunc(putRGBcontig8bittile)
1423 {
1424 int samplesperpixel = img->samplesperpixel;
1425
1426 (void) x; (void) y;
1427 fromskew *= samplesperpixel;
1428 for( ; h > 0; --h) {
1429 UNROLL8(w, NOP,
1430 *cp++ = PACK(pp[0], pp[1], pp[2]);
1431 pp += samplesperpixel);
1432 cp += toskew;
1433 pp += fromskew;
1434 }
1435 }
1436
1437 /*
1438 * 8-bit packed samples => RGBA w/ associated alpha
1439 * (known to have Map == NULL)
1440 */
DECLAREContigPutFunc(putRGBAAcontig8bittile)1441 DECLAREContigPutFunc(putRGBAAcontig8bittile)
1442 {
1443 int samplesperpixel = img->samplesperpixel;
1444
1445 (void) x; (void) y;
1446 fromskew *= samplesperpixel;
1447 for( ; h > 0; --h) {
1448 UNROLL8(w, NOP,
1449 *cp++ = PACK4(pp[0], pp[1], pp[2], pp[3]);
1450 pp += samplesperpixel);
1451 cp += toskew;
1452 pp += fromskew;
1453 }
1454 }
1455
1456 /*
1457 * 8-bit packed samples => RGBA w/ unassociated alpha
1458 * (known to have Map == NULL)
1459 */
DECLAREContigPutFunc(putRGBUAcontig8bittile)1460 DECLAREContigPutFunc(putRGBUAcontig8bittile)
1461 {
1462 int samplesperpixel = img->samplesperpixel;
1463 (void) y;
1464 fromskew *= samplesperpixel;
1465 for( ; h > 0; --h) {
1466 uint32 r, g, b, a;
1467 uint8* m;
1468 for (x = w; x > 0; --x) {
1469 a = pp[3];
1470 m = img->UaToAa+((size_t) a<<8);
1471 r = m[pp[0]];
1472 g = m[pp[1]];
1473 b = m[pp[2]];
1474 *cp++ = PACK4(r,g,b,a);
1475 pp += samplesperpixel;
1476 }
1477 cp += toskew;
1478 pp += fromskew;
1479 }
1480 }
1481
1482 /*
1483 * 16-bit packed samples => RGB
1484 */
DECLAREContigPutFunc(putRGBcontig16bittile)1485 DECLAREContigPutFunc(putRGBcontig16bittile)
1486 {
1487 int samplesperpixel = img->samplesperpixel;
1488 uint16 *wp = (uint16 *)pp;
1489 (void) y;
1490 fromskew *= samplesperpixel;
1491 for( ; h > 0; --h) {
1492 for (x = w; x > 0; --x) {
1493 *cp++ = PACK(img->Bitdepth16To8[wp[0]],
1494 img->Bitdepth16To8[wp[1]],
1495 img->Bitdepth16To8[wp[2]]);
1496 wp += samplesperpixel;
1497 }
1498 cp += toskew;
1499 wp += fromskew;
1500 }
1501 }
1502
1503 /*
1504 * 16-bit packed samples => RGBA w/ associated alpha
1505 * (known to have Map == NULL)
1506 */
DECLAREContigPutFunc(putRGBAAcontig16bittile)1507 DECLAREContigPutFunc(putRGBAAcontig16bittile)
1508 {
1509 int samplesperpixel = img->samplesperpixel;
1510 uint16 *wp = (uint16 *)pp;
1511 (void) y;
1512 fromskew *= samplesperpixel;
1513 for( ; h > 0; --h) {
1514 for (x = w; x > 0; --x) {
1515 *cp++ = PACK4(img->Bitdepth16To8[wp[0]],
1516 img->Bitdepth16To8[wp[1]],
1517 img->Bitdepth16To8[wp[2]],
1518 img->Bitdepth16To8[wp[3]]);
1519 wp += samplesperpixel;
1520 }
1521 cp += toskew;
1522 wp += fromskew;
1523 }
1524 }
1525
1526 /*
1527 * 16-bit packed samples => RGBA w/ unassociated alpha
1528 * (known to have Map == NULL)
1529 */
DECLAREContigPutFunc(putRGBUAcontig16bittile)1530 DECLAREContigPutFunc(putRGBUAcontig16bittile)
1531 {
1532 int samplesperpixel = img->samplesperpixel;
1533 uint16 *wp = (uint16 *)pp;
1534 (void) y;
1535 fromskew *= samplesperpixel;
1536 for( ; h > 0; --h) {
1537 uint32 r,g,b,a;
1538 uint8* m;
1539 for (x = w; x > 0; --x) {
1540 a = img->Bitdepth16To8[wp[3]];
1541 m = img->UaToAa+((size_t) a<<8);
1542 r = m[img->Bitdepth16To8[wp[0]]];
1543 g = m[img->Bitdepth16To8[wp[1]]];
1544 b = m[img->Bitdepth16To8[wp[2]]];
1545 *cp++ = PACK4(r,g,b,a);
1546 wp += samplesperpixel;
1547 }
1548 cp += toskew;
1549 wp += fromskew;
1550 }
1551 }
1552
1553 /*
1554 * 8-bit packed CMYK samples w/o Map => RGB
1555 *
1556 * NB: The conversion of CMYK->RGB is *very* crude.
1557 */
DECLAREContigPutFunc(putRGBcontig8bitCMYKtile)1558 DECLAREContigPutFunc(putRGBcontig8bitCMYKtile)
1559 {
1560 int samplesperpixel = img->samplesperpixel;
1561 uint16 r, g, b, k;
1562
1563 (void) x; (void) y;
1564 fromskew *= samplesperpixel;
1565 for( ; h > 0; --h) {
1566 UNROLL8(w, NOP,
1567 k = 255 - pp[3];
1568 r = (k*(255-pp[0]))/255;
1569 g = (k*(255-pp[1]))/255;
1570 b = (k*(255-pp[2]))/255;
1571 *cp++ = PACK(r, g, b);
1572 pp += samplesperpixel);
1573 cp += toskew;
1574 pp += fromskew;
1575 }
1576 }
1577
1578 /*
1579 * 8-bit packed CMYK samples w/Map => RGB
1580 *
1581 * NB: The conversion of CMYK->RGB is *very* crude.
1582 */
DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile)1583 DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile)
1584 {
1585 int samplesperpixel = img->samplesperpixel;
1586 TIFFRGBValue* Map = img->Map;
1587 uint16 r, g, b, k;
1588
1589 (void) y;
1590 fromskew *= samplesperpixel;
1591 for( ; h > 0; --h) {
1592 for (x = w; x > 0; --x) {
1593 k = 255 - pp[3];
1594 r = (k*(255-pp[0]))/255;
1595 g = (k*(255-pp[1]))/255;
1596 b = (k*(255-pp[2]))/255;
1597 *cp++ = PACK(Map[r], Map[g], Map[b]);
1598 pp += samplesperpixel;
1599 }
1600 pp += fromskew;
1601 cp += toskew;
1602 }
1603 }
1604
1605 #define DECLARESepPutFunc(name) \
1606 static void name(\
1607 TIFFRGBAImage* img,\
1608 uint32* cp,\
1609 uint32 x, uint32 y, \
1610 uint32 w, uint32 h,\
1611 int32 fromskew, int32 toskew,\
1612 unsigned char* r, unsigned char* g, unsigned char* b, unsigned char* a\
1613 )
1614
1615 /*
1616 * 8-bit unpacked samples => RGB
1617 */
DECLARESepPutFunc(putRGBseparate8bittile)1618 DECLARESepPutFunc(putRGBseparate8bittile)
1619 {
1620 (void) img; (void) x; (void) y; (void) a;
1621 for( ; h > 0; --h) {
1622 UNROLL8(w, NOP, *cp++ = PACK(*r++, *g++, *b++));
1623 SKEW(r, g, b, fromskew);
1624 cp += toskew;
1625 }
1626 }
1627
1628 /*
1629 * 8-bit unpacked samples => RGBA w/ associated alpha
1630 */
DECLARESepPutFunc(putRGBAAseparate8bittile)1631 DECLARESepPutFunc(putRGBAAseparate8bittile)
1632 {
1633 (void) img; (void) x; (void) y;
1634 for( ; h > 0; --h) {
1635 UNROLL8(w, NOP, *cp++ = PACK4(*r++, *g++, *b++, *a++));
1636 SKEW4(r, g, b, a, fromskew);
1637 cp += toskew;
1638 }
1639 }
1640
1641 /*
1642 * 8-bit unpacked CMYK samples => RGBA
1643 */
DECLARESepPutFunc(putCMYKseparate8bittile)1644 DECLARESepPutFunc(putCMYKseparate8bittile)
1645 {
1646 (void) img; (void) y;
1647 for( ; h > 0; --h) {
1648 uint32 rv, gv, bv, kv;
1649 for (x = w; x > 0; --x) {
1650 kv = 255 - *a++;
1651 rv = (kv*(255-*r++))/255;
1652 gv = (kv*(255-*g++))/255;
1653 bv = (kv*(255-*b++))/255;
1654 *cp++ = PACK4(rv,gv,bv,255);
1655 }
1656 SKEW4(r, g, b, a, fromskew);
1657 cp += toskew;
1658 }
1659 }
1660
1661 /*
1662 * 8-bit unpacked samples => RGBA w/ unassociated alpha
1663 */
DECLARESepPutFunc(putRGBUAseparate8bittile)1664 DECLARESepPutFunc(putRGBUAseparate8bittile)
1665 {
1666 (void) img; (void) y;
1667 for( ; h > 0; --h) {
1668 uint32 rv, gv, bv, av;
1669 uint8* m;
1670 for (x = w; x > 0; --x) {
1671 av = *a++;
1672 m = img->UaToAa+((size_t) av<<8);
1673 rv = m[*r++];
1674 gv = m[*g++];
1675 bv = m[*b++];
1676 *cp++ = PACK4(rv,gv,bv,av);
1677 }
1678 SKEW4(r, g, b, a, fromskew);
1679 cp += toskew;
1680 }
1681 }
1682
1683 /*
1684 * 16-bit unpacked samples => RGB
1685 */
DECLARESepPutFunc(putRGBseparate16bittile)1686 DECLARESepPutFunc(putRGBseparate16bittile)
1687 {
1688 uint16 *wr = (uint16*) r;
1689 uint16 *wg = (uint16*) g;
1690 uint16 *wb = (uint16*) b;
1691 (void) img; (void) y; (void) a;
1692 for( ; h > 0; --h) {
1693 for (x = 0; x < w; x++)
1694 *cp++ = PACK(img->Bitdepth16To8[*wr++],
1695 img->Bitdepth16To8[*wg++],
1696 img->Bitdepth16To8[*wb++]);
1697 SKEW(wr, wg, wb, fromskew);
1698 cp += toskew;
1699 }
1700 }
1701
1702 /*
1703 * 16-bit unpacked samples => RGBA w/ associated alpha
1704 */
DECLARESepPutFunc(putRGBAAseparate16bittile)1705 DECLARESepPutFunc(putRGBAAseparate16bittile)
1706 {
1707 uint16 *wr = (uint16*) r;
1708 uint16 *wg = (uint16*) g;
1709 uint16 *wb = (uint16*) b;
1710 uint16 *wa = (uint16*) a;
1711 (void) img; (void) y;
1712 for( ; h > 0; --h) {
1713 for (x = 0; x < w; x++)
1714 *cp++ = PACK4(img->Bitdepth16To8[*wr++],
1715 img->Bitdepth16To8[*wg++],
1716 img->Bitdepth16To8[*wb++],
1717 img->Bitdepth16To8[*wa++]);
1718 SKEW4(wr, wg, wb, wa, fromskew);
1719 cp += toskew;
1720 }
1721 }
1722
1723 /*
1724 * 16-bit unpacked samples => RGBA w/ unassociated alpha
1725 */
DECLARESepPutFunc(putRGBUAseparate16bittile)1726 DECLARESepPutFunc(putRGBUAseparate16bittile)
1727 {
1728 uint16 *wr = (uint16*) r;
1729 uint16 *wg = (uint16*) g;
1730 uint16 *wb = (uint16*) b;
1731 uint16 *wa = (uint16*) a;
1732 (void) img; (void) y;
1733 for( ; h > 0; --h) {
1734 uint32 r2,g2,b2,a2;
1735 uint8* m;
1736 for (x = w; x > 0; --x) {
1737 a2 = img->Bitdepth16To8[*wa++];
1738 m = img->UaToAa+((size_t) a2<<8);
1739 r2 = m[img->Bitdepth16To8[*wr++]];
1740 g2 = m[img->Bitdepth16To8[*wg++]];
1741 b2 = m[img->Bitdepth16To8[*wb++]];
1742 *cp++ = PACK4(r2,g2,b2,a2);
1743 }
1744 SKEW4(wr, wg, wb, wa, fromskew);
1745 cp += toskew;
1746 }
1747 }
1748
1749 /*
1750 * 8-bit packed CIE L*a*b 1976 samples => RGB
1751 */
DECLAREContigPutFunc(putcontig8bitCIELab)1752 DECLAREContigPutFunc(putcontig8bitCIELab)
1753 {
1754 float X, Y, Z;
1755 uint32 r, g, b;
1756 (void) y;
1757 fromskew *= 3;
1758 for( ; h > 0; --h) {
1759 for (x = w; x > 0; --x) {
1760 TIFFCIELabToXYZ(img->cielab,
1761 (unsigned char)pp[0],
1762 (signed char)pp[1],
1763 (signed char)pp[2],
1764 &X, &Y, &Z);
1765 TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b);
1766 *cp++ = PACK(r, g, b);
1767 pp += 3;
1768 }
1769 cp += toskew;
1770 pp += fromskew;
1771 }
1772 }
1773
1774 /*
1775 * YCbCr -> RGB conversion and packing routines.
1776 */
1777
1778 #define YCbCrtoRGB(dst, Y) { \
1779 uint32 r, g, b; \
1780 TIFFYCbCrtoRGB(img->ycbcr, (Y), Cb, Cr, &r, &g, &b); \
1781 dst = PACK(r, g, b); \
1782 }
1783
1784 /*
1785 * 8-bit packed YCbCr samples => RGB
1786 * This function is generic for different sampling sizes,
1787 * and can handle blocks sizes that aren't multiples of the
1788 * sampling size. However, it is substantially less optimized
1789 * than the specific sampling cases. It is used as a fallback
1790 * for difficult blocks.
1791 */
1792 #ifdef notdef
putcontig8bitYCbCrGenericTile(TIFFRGBAImage * img,uint32 * cp,uint32 x,uint32 y,uint32 w,uint32 h,int32 fromskew,int32 toskew,unsigned char * pp,int h_group,int v_group)1793 static void putcontig8bitYCbCrGenericTile(
1794 TIFFRGBAImage* img,
1795 uint32* cp,
1796 uint32 x, uint32 y,
1797 uint32 w, uint32 h,
1798 int32 fromskew, int32 toskew,
1799 unsigned char* pp,
1800 int h_group,
1801 int v_group )
1802
1803 {
1804 uint32* cp1 = cp+w+toskew;
1805 uint32* cp2 = cp1+w+toskew;
1806 uint32* cp3 = cp2+w+toskew;
1807 int32 incr = 3*w+4*toskew;
1808 int32 Cb, Cr;
1809 int group_size = v_group * h_group + 2;
1810
1811 (void) y;
1812 fromskew = (fromskew * group_size) / h_group;
1813
1814 for( yy = 0; yy < h; yy++ )
1815 {
1816 unsigned char *pp_line;
1817 int y_line_group = yy / v_group;
1818 int y_remainder = yy - y_line_group * v_group;
1819
1820 pp_line = pp + v_line_group *
1821
1822
1823 for( xx = 0; xx < w; xx++ )
1824 {
1825 Cb = pp
1826 }
1827 }
1828 for (; h >= 4; h -= 4) {
1829 x = w>>2;
1830 do {
1831 Cb = pp[16];
1832 Cr = pp[17];
1833
1834 YCbCrtoRGB(cp [0], pp[ 0]);
1835 YCbCrtoRGB(cp [1], pp[ 1]);
1836 YCbCrtoRGB(cp [2], pp[ 2]);
1837 YCbCrtoRGB(cp [3], pp[ 3]);
1838 YCbCrtoRGB(cp1[0], pp[ 4]);
1839 YCbCrtoRGB(cp1[1], pp[ 5]);
1840 YCbCrtoRGB(cp1[2], pp[ 6]);
1841 YCbCrtoRGB(cp1[3], pp[ 7]);
1842 YCbCrtoRGB(cp2[0], pp[ 8]);
1843 YCbCrtoRGB(cp2[1], pp[ 9]);
1844 YCbCrtoRGB(cp2[2], pp[10]);
1845 YCbCrtoRGB(cp2[3], pp[11]);
1846 YCbCrtoRGB(cp3[0], pp[12]);
1847 YCbCrtoRGB(cp3[1], pp[13]);
1848 YCbCrtoRGB(cp3[2], pp[14]);
1849 YCbCrtoRGB(cp3[3], pp[15]);
1850
1851 cp += 4, cp1 += 4, cp2 += 4, cp3 += 4;
1852 pp += 18;
1853 } while (--x);
1854 cp += incr, cp1 += incr, cp2 += incr, cp3 += incr;
1855 pp += fromskew;
1856 }
1857 }
1858 #endif
1859
1860 /*
1861 * 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB
1862 */
DECLAREContigPutFunc(putcontig8bitYCbCr44tile)1863 DECLAREContigPutFunc(putcontig8bitYCbCr44tile)
1864 {
1865 uint32* cp1 = cp+w+toskew;
1866 uint32* cp2 = cp1+w+toskew;
1867 uint32* cp3 = cp2+w+toskew;
1868 int32 incr = 3*w+4*toskew;
1869
1870 (void) y;
1871 /* adjust fromskew */
1872 fromskew = (fromskew / 4) * (4*2+2);
1873 if ((h & 3) == 0 && (w & 3) == 0) {
1874 for (; h >= 4; h -= 4) {
1875 x = w>>2;
1876 do {
1877 int32 Cb = pp[16];
1878 int32 Cr = pp[17];
1879
1880 YCbCrtoRGB(cp [0], pp[ 0]);
1881 YCbCrtoRGB(cp [1], pp[ 1]);
1882 YCbCrtoRGB(cp [2], pp[ 2]);
1883 YCbCrtoRGB(cp [3], pp[ 3]);
1884 YCbCrtoRGB(cp1[0], pp[ 4]);
1885 YCbCrtoRGB(cp1[1], pp[ 5]);
1886 YCbCrtoRGB(cp1[2], pp[ 6]);
1887 YCbCrtoRGB(cp1[3], pp[ 7]);
1888 YCbCrtoRGB(cp2[0], pp[ 8]);
1889 YCbCrtoRGB(cp2[1], pp[ 9]);
1890 YCbCrtoRGB(cp2[2], pp[10]);
1891 YCbCrtoRGB(cp2[3], pp[11]);
1892 YCbCrtoRGB(cp3[0], pp[12]);
1893 YCbCrtoRGB(cp3[1], pp[13]);
1894 YCbCrtoRGB(cp3[2], pp[14]);
1895 YCbCrtoRGB(cp3[3], pp[15]);
1896
1897 cp += 4;
1898 cp1 += 4;
1899 cp2 += 4;
1900 cp3 += 4;
1901 pp += 18;
1902 } while (--x);
1903 cp += incr;
1904 cp1 += incr;
1905 cp2 += incr;
1906 cp3 += incr;
1907 pp += fromskew;
1908 }
1909 } else {
1910 while (h > 0) {
1911 for (x = w; x > 0;) {
1912 int32 Cb = pp[16];
1913 int32 Cr = pp[17];
1914 switch (x) {
1915 default:
1916 switch (h) {
1917 default: YCbCrtoRGB(cp3[3], pp[15]); /* FALLTHROUGH */
1918 case 3: YCbCrtoRGB(cp2[3], pp[11]); /* FALLTHROUGH */
1919 case 2: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
1920 case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
1921 } /* FALLTHROUGH */
1922 case 3:
1923 switch (h) {
1924 default: YCbCrtoRGB(cp3[2], pp[14]); /* FALLTHROUGH */
1925 case 3: YCbCrtoRGB(cp2[2], pp[10]); /* FALLTHROUGH */
1926 case 2: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
1927 case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
1928 } /* FALLTHROUGH */
1929 case 2:
1930 switch (h) {
1931 default: YCbCrtoRGB(cp3[1], pp[13]); /* FALLTHROUGH */
1932 case 3: YCbCrtoRGB(cp2[1], pp[ 9]); /* FALLTHROUGH */
1933 case 2: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
1934 case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
1935 } /* FALLTHROUGH */
1936 case 1:
1937 switch (h) {
1938 default: YCbCrtoRGB(cp3[0], pp[12]); /* FALLTHROUGH */
1939 case 3: YCbCrtoRGB(cp2[0], pp[ 8]); /* FALLTHROUGH */
1940 case 2: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
1941 case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
1942 } /* FALLTHROUGH */
1943 }
1944 if (x < 4) {
1945 cp += x; cp1 += x; cp2 += x; cp3 += x;
1946 x = 0;
1947 }
1948 else {
1949 cp += 4; cp1 += 4; cp2 += 4; cp3 += 4;
1950 x -= 4;
1951 }
1952 pp += 18;
1953 }
1954 if (h <= 4)
1955 break;
1956 h -= 4;
1957 cp += incr;
1958 cp1 += incr;
1959 cp2 += incr;
1960 cp3 += incr;
1961 pp += fromskew;
1962 }
1963 }
1964 }
1965
1966 /*
1967 * 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB
1968 */
DECLAREContigPutFunc(putcontig8bitYCbCr42tile)1969 DECLAREContigPutFunc(putcontig8bitYCbCr42tile)
1970 {
1971 uint32* cp1 = cp+w+toskew;
1972 int32 incr = 2*toskew+w;
1973
1974 (void) y;
1975 fromskew = (fromskew / 4) * (4*2+2);
1976 if ((w & 3) == 0 && (h & 1) == 0) {
1977 for (; h >= 2; h -= 2) {
1978 x = w>>2;
1979 do {
1980 int32 Cb = pp[8];
1981 int32 Cr = pp[9];
1982
1983 YCbCrtoRGB(cp [0], pp[0]);
1984 YCbCrtoRGB(cp [1], pp[1]);
1985 YCbCrtoRGB(cp [2], pp[2]);
1986 YCbCrtoRGB(cp [3], pp[3]);
1987 YCbCrtoRGB(cp1[0], pp[4]);
1988 YCbCrtoRGB(cp1[1], pp[5]);
1989 YCbCrtoRGB(cp1[2], pp[6]);
1990 YCbCrtoRGB(cp1[3], pp[7]);
1991
1992 cp += 4;
1993 cp1 += 4;
1994 pp += 10;
1995 } while (--x);
1996 cp += incr;
1997 cp1 += incr;
1998 pp += fromskew;
1999 }
2000 } else {
2001 while (h > 0) {
2002 for (x = w; x > 0;) {
2003 int32 Cb = pp[8];
2004 int32 Cr = pp[9];
2005 switch (x) {
2006 default:
2007 switch (h) {
2008 default: YCbCrtoRGB(cp1[3], pp[ 7]); /* FALLTHROUGH */
2009 case 1: YCbCrtoRGB(cp [3], pp[ 3]); /* FALLTHROUGH */
2010 } /* FALLTHROUGH */
2011 case 3:
2012 switch (h) {
2013 default: YCbCrtoRGB(cp1[2], pp[ 6]); /* FALLTHROUGH */
2014 case 1: YCbCrtoRGB(cp [2], pp[ 2]); /* FALLTHROUGH */
2015 } /* FALLTHROUGH */
2016 case 2:
2017 switch (h) {
2018 default: YCbCrtoRGB(cp1[1], pp[ 5]); /* FALLTHROUGH */
2019 case 1: YCbCrtoRGB(cp [1], pp[ 1]); /* FALLTHROUGH */
2020 } /* FALLTHROUGH */
2021 case 1:
2022 switch (h) {
2023 default: YCbCrtoRGB(cp1[0], pp[ 4]); /* FALLTHROUGH */
2024 case 1: YCbCrtoRGB(cp [0], pp[ 0]); /* FALLTHROUGH */
2025 } /* FALLTHROUGH */
2026 }
2027 if (x < 4) {
2028 cp += x; cp1 += x;
2029 x = 0;
2030 }
2031 else {
2032 cp += 4; cp1 += 4;
2033 x -= 4;
2034 }
2035 pp += 10;
2036 }
2037 if (h <= 2)
2038 break;
2039 h -= 2;
2040 cp += incr;
2041 cp1 += incr;
2042 pp += fromskew;
2043 }
2044 }
2045 }
2046
2047 /*
2048 * 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB
2049 */
DECLAREContigPutFunc(putcontig8bitYCbCr41tile)2050 DECLAREContigPutFunc(putcontig8bitYCbCr41tile)
2051 {
2052 (void) y;
2053 fromskew = (fromskew / 4) * (4*1+2);
2054 do {
2055 x = w>>2;
2056 while(x>0) {
2057 int32 Cb = pp[4];
2058 int32 Cr = pp[5];
2059
2060 YCbCrtoRGB(cp [0], pp[0]);
2061 YCbCrtoRGB(cp [1], pp[1]);
2062 YCbCrtoRGB(cp [2], pp[2]);
2063 YCbCrtoRGB(cp [3], pp[3]);
2064
2065 cp += 4;
2066 pp += 6;
2067 x--;
2068 }
2069
2070 if( (w&3) != 0 )
2071 {
2072 int32 Cb = pp[4];
2073 int32 Cr = pp[5];
2074
2075 switch( (w&3) ) {
2076 case 3: YCbCrtoRGB(cp [2], pp[2]); /*-fallthrough*/
2077 case 2: YCbCrtoRGB(cp [1], pp[1]); /*-fallthrough*/
2078 case 1: YCbCrtoRGB(cp [0], pp[0]); /*-fallthrough*/
2079 case 0: break;
2080 }
2081
2082 cp += (w&3);
2083 pp += 6;
2084 }
2085
2086 cp += toskew;
2087 pp += fromskew;
2088 } while (--h);
2089
2090 }
2091
2092 /*
2093 * 8-bit packed YCbCr samples w/ 2,2 subsampling => RGB
2094 */
DECLAREContigPutFunc(putcontig8bitYCbCr22tile)2095 DECLAREContigPutFunc(putcontig8bitYCbCr22tile)
2096 {
2097 uint32* cp2;
2098 int32 incr = 2*toskew+w;
2099 (void) y;
2100 fromskew = (fromskew / 2) * (2*2+2);
2101 cp2 = cp+w+toskew;
2102 while (h>=2) {
2103 x = w;
2104 while (x>=2) {
2105 uint32 Cb = pp[4];
2106 uint32 Cr = pp[5];
2107 YCbCrtoRGB(cp[0], pp[0]);
2108 YCbCrtoRGB(cp[1], pp[1]);
2109 YCbCrtoRGB(cp2[0], pp[2]);
2110 YCbCrtoRGB(cp2[1], pp[3]);
2111 cp += 2;
2112 cp2 += 2;
2113 pp += 6;
2114 x -= 2;
2115 }
2116 if (x==1) {
2117 uint32 Cb = pp[4];
2118 uint32 Cr = pp[5];
2119 YCbCrtoRGB(cp[0], pp[0]);
2120 YCbCrtoRGB(cp2[0], pp[2]);
2121 cp ++ ;
2122 cp2 ++ ;
2123 pp += 6;
2124 }
2125 cp += incr;
2126 cp2 += incr;
2127 pp += fromskew;
2128 h-=2;
2129 }
2130 if (h==1) {
2131 x = w;
2132 while (x>=2) {
2133 uint32 Cb = pp[4];
2134 uint32 Cr = pp[5];
2135 YCbCrtoRGB(cp[0], pp[0]);
2136 YCbCrtoRGB(cp[1], pp[1]);
2137 cp += 2;
2138 cp2 += 2;
2139 pp += 6;
2140 x -= 2;
2141 }
2142 if (x==1) {
2143 uint32 Cb = pp[4];
2144 uint32 Cr = pp[5];
2145 YCbCrtoRGB(cp[0], pp[0]);
2146 }
2147 }
2148 }
2149
2150 /*
2151 * 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB
2152 */
DECLAREContigPutFunc(putcontig8bitYCbCr21tile)2153 DECLAREContigPutFunc(putcontig8bitYCbCr21tile)
2154 {
2155 (void) y;
2156 fromskew = (fromskew / 2) * (2*1+2);
2157 do {
2158 x = w>>1;
2159 while(x>0) {
2160 int32 Cb = pp[2];
2161 int32 Cr = pp[3];
2162
2163 YCbCrtoRGB(cp[0], pp[0]);
2164 YCbCrtoRGB(cp[1], pp[1]);
2165
2166 cp += 2;
2167 pp += 4;
2168 x --;
2169 }
2170
2171 if( (w&1) != 0 )
2172 {
2173 int32 Cb = pp[2];
2174 int32 Cr = pp[3];
2175
2176 YCbCrtoRGB(cp[0], pp[0]);
2177
2178 cp += 1;
2179 pp += 4;
2180 }
2181
2182 cp += toskew;
2183 pp += fromskew;
2184 } while (--h);
2185 }
2186
2187 /*
2188 * 8-bit packed YCbCr samples w/ 1,2 subsampling => RGB
2189 */
DECLAREContigPutFunc(putcontig8bitYCbCr12tile)2190 DECLAREContigPutFunc(putcontig8bitYCbCr12tile)
2191 {
2192 uint32* cp2;
2193 int32 incr = 2*toskew+w;
2194 (void) y;
2195 fromskew = (fromskew / 1) * (1 * 2 + 2);
2196 cp2 = cp+w+toskew;
2197 while (h>=2) {
2198 x = w;
2199 do {
2200 uint32 Cb = pp[2];
2201 uint32 Cr = pp[3];
2202 YCbCrtoRGB(cp[0], pp[0]);
2203 YCbCrtoRGB(cp2[0], pp[1]);
2204 cp ++;
2205 cp2 ++;
2206 pp += 4;
2207 } while (--x);
2208 cp += incr;
2209 cp2 += incr;
2210 pp += fromskew;
2211 h-=2;
2212 }
2213 if (h==1) {
2214 x = w;
2215 do {
2216 uint32 Cb = pp[2];
2217 uint32 Cr = pp[3];
2218 YCbCrtoRGB(cp[0], pp[0]);
2219 cp ++;
2220 pp += 4;
2221 } while (--x);
2222 }
2223 }
2224
2225 /*
2226 * 8-bit packed YCbCr samples w/ no subsampling => RGB
2227 */
DECLAREContigPutFunc(putcontig8bitYCbCr11tile)2228 DECLAREContigPutFunc(putcontig8bitYCbCr11tile)
2229 {
2230 (void) y;
2231 fromskew = (fromskew / 1) * (1 * 1 + 2);
2232 do {
2233 x = w; /* was x = w>>1; patched 2000/09/25 warmerda@home.com */
2234 do {
2235 int32 Cb = pp[1];
2236 int32 Cr = pp[2];
2237
2238 YCbCrtoRGB(*cp++, pp[0]);
2239
2240 pp += 3;
2241 } while (--x);
2242 cp += toskew;
2243 pp += fromskew;
2244 } while (--h);
2245 }
2246
2247 /*
2248 * 8-bit packed YCbCr samples w/ no subsampling => RGB
2249 */
DECLARESepPutFunc(putseparate8bitYCbCr11tile)2250 DECLARESepPutFunc(putseparate8bitYCbCr11tile)
2251 {
2252 (void) y;
2253 (void) a;
2254 /* TODO: naming of input vars is still off, change obfuscating declaration inside define, or resolve obfuscation */
2255 for( ; h > 0; --h) {
2256 x = w;
2257 do {
2258 uint32 dr, dg, db;
2259 TIFFYCbCrtoRGB(img->ycbcr,*r++,*g++,*b++,&dr,&dg,&db);
2260 *cp++ = PACK(dr,dg,db);
2261 } while (--x);
2262 SKEW(r, g, b, fromskew);
2263 cp += toskew;
2264 }
2265 }
2266 #undef YCbCrtoRGB
2267
isInRefBlackWhiteRange(float f)2268 static int isInRefBlackWhiteRange(float f)
2269 {
2270 return f > (float)(-0x7FFFFFFF + 128) && f < (float)0x7FFFFFFF;
2271 }
2272
2273 static int
initYCbCrConversion(TIFFRGBAImage * img)2274 initYCbCrConversion(TIFFRGBAImage* img)
2275 {
2276 static const char module[] = "initYCbCrConversion";
2277
2278 float *luma, *refBlackWhite;
2279
2280 if (img->ycbcr == NULL) {
2281 img->ycbcr = (TIFFYCbCrToRGB*) _TIFFmalloc(
2282 TIFFroundup_32(sizeof (TIFFYCbCrToRGB), sizeof (long))
2283 + 4*256*sizeof (TIFFRGBValue)
2284 + 2*256*sizeof (int)
2285 + 3*256*sizeof (int32)
2286 );
2287 if (img->ycbcr == NULL) {
2288 TIFFErrorExt(img->tif->tif_clientdata, module,
2289 "No space for YCbCr->RGB conversion state");
2290 return (0);
2291 }
2292 }
2293
2294 TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRCOEFFICIENTS, &luma);
2295 TIFFGetFieldDefaulted(img->tif, TIFFTAG_REFERENCEBLACKWHITE,
2296 &refBlackWhite);
2297
2298 /* Do some validation to avoid later issues. Detect NaN for now */
2299 /* and also if lumaGreen is zero since we divide by it later */
2300 if( luma[0] != luma[0] ||
2301 luma[1] != luma[1] ||
2302 luma[1] == 0.0 ||
2303 luma[2] != luma[2] )
2304 {
2305 TIFFErrorExt(img->tif->tif_clientdata, module,
2306 "Invalid values for YCbCrCoefficients tag");
2307 return (0);
2308 }
2309
2310 if( !isInRefBlackWhiteRange(refBlackWhite[0]) ||
2311 !isInRefBlackWhiteRange(refBlackWhite[1]) ||
2312 !isInRefBlackWhiteRange(refBlackWhite[2]) ||
2313 !isInRefBlackWhiteRange(refBlackWhite[3]) ||
2314 !isInRefBlackWhiteRange(refBlackWhite[4]) ||
2315 !isInRefBlackWhiteRange(refBlackWhite[5]) )
2316 {
2317 TIFFErrorExt(img->tif->tif_clientdata, module,
2318 "Invalid values for ReferenceBlackWhite tag");
2319 return (0);
2320 }
2321
2322 if (TIFFYCbCrToRGBInit(img->ycbcr, luma, refBlackWhite) < 0)
2323 return(0);
2324 return (1);
2325 }
2326
2327 static tileContigRoutine
initCIELabConversion(TIFFRGBAImage * img)2328 initCIELabConversion(TIFFRGBAImage* img)
2329 {
2330 static const char module[] = "initCIELabConversion";
2331
2332 float *whitePoint;
2333 float refWhite[3];
2334
2335 TIFFGetFieldDefaulted(img->tif, TIFFTAG_WHITEPOINT, &whitePoint);
2336 if (whitePoint[1] == 0.0f ) {
2337 TIFFErrorExt(img->tif->tif_clientdata, module,
2338 "Invalid value for WhitePoint tag.");
2339 return NULL;
2340 }
2341
2342 if (!img->cielab) {
2343 img->cielab = (TIFFCIELabToRGB *)
2344 _TIFFmalloc(sizeof(TIFFCIELabToRGB));
2345 if (!img->cielab) {
2346 TIFFErrorExt(img->tif->tif_clientdata, module,
2347 "No space for CIE L*a*b*->RGB conversion state.");
2348 return NULL;
2349 }
2350 }
2351
2352 refWhite[1] = 100.0F;
2353 refWhite[0] = whitePoint[0] / whitePoint[1] * refWhite[1];
2354 refWhite[2] = (1.0F - whitePoint[0] - whitePoint[1])
2355 / whitePoint[1] * refWhite[1];
2356 if (TIFFCIELabToRGBInit(img->cielab, &display_sRGB, refWhite) < 0) {
2357 TIFFErrorExt(img->tif->tif_clientdata, module,
2358 "Failed to initialize CIE L*a*b*->RGB conversion state.");
2359 _TIFFfree(img->cielab);
2360 return NULL;
2361 }
2362
2363 return putcontig8bitCIELab;
2364 }
2365
2366 /*
2367 * Greyscale images with less than 8 bits/sample are handled
2368 * with a table to avoid lots of shifts and masks. The table
2369 * is setup so that put*bwtile (below) can retrieve 8/bitspersample
2370 * pixel values simply by indexing into the table with one
2371 * number.
2372 */
2373 static int
makebwmap(TIFFRGBAImage * img)2374 makebwmap(TIFFRGBAImage* img)
2375 {
2376 TIFFRGBValue* Map = img->Map;
2377 int bitspersample = img->bitspersample;
2378 int nsamples = 8 / bitspersample;
2379 int i;
2380 uint32* p;
2381
2382 if( nsamples == 0 )
2383 nsamples = 1;
2384
2385 img->BWmap = (uint32**) _TIFFmalloc(
2386 256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
2387 if (img->BWmap == NULL) {
2388 TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for B&W mapping table");
2389 return (0);
2390 }
2391 p = (uint32*)(img->BWmap + 256);
2392 for (i = 0; i < 256; i++) {
2393 TIFFRGBValue c;
2394 img->BWmap[i] = p;
2395 switch (bitspersample) {
2396 #define GREY(x) c = Map[x]; *p++ = PACK(c,c,c);
2397 case 1:
2398 GREY(i>>7);
2399 GREY((i>>6)&1);
2400 GREY((i>>5)&1);
2401 GREY((i>>4)&1);
2402 GREY((i>>3)&1);
2403 GREY((i>>2)&1);
2404 GREY((i>>1)&1);
2405 GREY(i&1);
2406 break;
2407 case 2:
2408 GREY(i>>6);
2409 GREY((i>>4)&3);
2410 GREY((i>>2)&3);
2411 GREY(i&3);
2412 break;
2413 case 4:
2414 GREY(i>>4);
2415 GREY(i&0xf);
2416 break;
2417 case 8:
2418 case 16:
2419 GREY(i);
2420 break;
2421 }
2422 #undef GREY
2423 }
2424 return (1);
2425 }
2426
2427 /*
2428 * Construct a mapping table to convert from the range
2429 * of the data samples to [0,255] --for display. This
2430 * process also handles inverting B&W images when needed.
2431 */
2432 static int
setupMap(TIFFRGBAImage * img)2433 setupMap(TIFFRGBAImage* img)
2434 {
2435 int32 x, range;
2436
2437 range = (int32)((1L<<img->bitspersample)-1);
2438
2439 /* treat 16 bit the same as eight bit */
2440 if( img->bitspersample == 16 )
2441 range = (int32) 255;
2442
2443 img->Map = (TIFFRGBValue*) _TIFFmalloc((range+1) * sizeof (TIFFRGBValue));
2444 if (img->Map == NULL) {
2445 TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif),
2446 "No space for photometric conversion table");
2447 return (0);
2448 }
2449 if (img->photometric == PHOTOMETRIC_MINISWHITE) {
2450 for (x = 0; x <= range; x++)
2451 img->Map[x] = (TIFFRGBValue) (((range - x) * 255) / range);
2452 } else {
2453 for (x = 0; x <= range; x++)
2454 img->Map[x] = (TIFFRGBValue) ((x * 255) / range);
2455 }
2456 if (img->bitspersample <= 16 &&
2457 (img->photometric == PHOTOMETRIC_MINISBLACK ||
2458 img->photometric == PHOTOMETRIC_MINISWHITE)) {
2459 /*
2460 * Use photometric mapping table to construct
2461 * unpacking tables for samples <= 8 bits.
2462 */
2463 if (!makebwmap(img))
2464 return (0);
2465 /* no longer need Map, free it */
2466 _TIFFfree(img->Map);
2467 img->Map = NULL;
2468 }
2469 return (1);
2470 }
2471
2472 static int
checkcmap(TIFFRGBAImage * img)2473 checkcmap(TIFFRGBAImage* img)
2474 {
2475 uint16* r = img->redcmap;
2476 uint16* g = img->greencmap;
2477 uint16* b = img->bluecmap;
2478 long n = 1L<<img->bitspersample;
2479
2480 while (n-- > 0)
2481 if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
2482 return (16);
2483 return (8);
2484 }
2485
2486 static void
cvtcmap(TIFFRGBAImage * img)2487 cvtcmap(TIFFRGBAImage* img)
2488 {
2489 uint16* r = img->redcmap;
2490 uint16* g = img->greencmap;
2491 uint16* b = img->bluecmap;
2492 long i;
2493
2494 for (i = (1L<<img->bitspersample)-1; i >= 0; i--) {
2495 #define CVT(x) ((uint16)((x)>>8))
2496 r[i] = CVT(r[i]);
2497 g[i] = CVT(g[i]);
2498 b[i] = CVT(b[i]);
2499 #undef CVT
2500 }
2501 }
2502
2503 /*
2504 * Palette images with <= 8 bits/sample are handled
2505 * with a table to avoid lots of shifts and masks. The table
2506 * is setup so that put*cmaptile (below) can retrieve 8/bitspersample
2507 * pixel values simply by indexing into the table with one
2508 * number.
2509 */
2510 static int
makecmap(TIFFRGBAImage * img)2511 makecmap(TIFFRGBAImage* img)
2512 {
2513 int bitspersample = img->bitspersample;
2514 int nsamples = 8 / bitspersample;
2515 uint16* r = img->redcmap;
2516 uint16* g = img->greencmap;
2517 uint16* b = img->bluecmap;
2518 uint32 *p;
2519 int i;
2520
2521 img->PALmap = (uint32**) _TIFFmalloc(
2522 256*sizeof (uint32 *)+(256*nsamples*sizeof(uint32)));
2523 if (img->PALmap == NULL) {
2524 TIFFErrorExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "No space for Palette mapping table");
2525 return (0);
2526 }
2527 p = (uint32*)(img->PALmap + 256);
2528 for (i = 0; i < 256; i++) {
2529 TIFFRGBValue c;
2530 img->PALmap[i] = p;
2531 #define CMAP(x) c = (TIFFRGBValue) x; *p++ = PACK(r[c]&0xff, g[c]&0xff, b[c]&0xff);
2532 switch (bitspersample) {
2533 case 1:
2534 CMAP(i>>7);
2535 CMAP((i>>6)&1);
2536 CMAP((i>>5)&1);
2537 CMAP((i>>4)&1);
2538 CMAP((i>>3)&1);
2539 CMAP((i>>2)&1);
2540 CMAP((i>>1)&1);
2541 CMAP(i&1);
2542 break;
2543 case 2:
2544 CMAP(i>>6);
2545 CMAP((i>>4)&3);
2546 CMAP((i>>2)&3);
2547 CMAP(i&3);
2548 break;
2549 case 4:
2550 CMAP(i>>4);
2551 CMAP(i&0xf);
2552 break;
2553 case 8:
2554 CMAP(i);
2555 break;
2556 }
2557 #undef CMAP
2558 }
2559 return (1);
2560 }
2561
2562 /*
2563 * Construct any mapping table used
2564 * by the associated put routine.
2565 */
2566 static int
buildMap(TIFFRGBAImage * img)2567 buildMap(TIFFRGBAImage* img)
2568 {
2569 switch (img->photometric) {
2570 case PHOTOMETRIC_RGB:
2571 case PHOTOMETRIC_YCBCR:
2572 case PHOTOMETRIC_SEPARATED:
2573 if (img->bitspersample == 8)
2574 break;
2575 /* fall through... */
2576 case PHOTOMETRIC_MINISBLACK:
2577 case PHOTOMETRIC_MINISWHITE:
2578 if (!setupMap(img))
2579 return (0);
2580 break;
2581 case PHOTOMETRIC_PALETTE:
2582 /*
2583 * Convert 16-bit colormap to 8-bit (unless it looks
2584 * like an old-style 8-bit colormap).
2585 */
2586 if (checkcmap(img) == 16)
2587 cvtcmap(img);
2588 else
2589 TIFFWarningExt(img->tif->tif_clientdata, TIFFFileName(img->tif), "Assuming 8-bit colormap");
2590 /*
2591 * Use mapping table and colormap to construct
2592 * unpacking tables for samples < 8 bits.
2593 */
2594 if (img->bitspersample <= 8 && !makecmap(img))
2595 return (0);
2596 break;
2597 }
2598 return (1);
2599 }
2600
2601 /*
2602 * Select the appropriate conversion routine for packed data.
2603 */
2604 static int
PickContigCase(TIFFRGBAImage * img)2605 PickContigCase(TIFFRGBAImage* img)
2606 {
2607 img->get = TIFFIsTiled(img->tif) ? gtTileContig : gtStripContig;
2608 img->put.contig = NULL;
2609 switch (img->photometric) {
2610 case PHOTOMETRIC_RGB:
2611 switch (img->bitspersample) {
2612 case 8:
2613 if (img->alpha == EXTRASAMPLE_ASSOCALPHA &&
2614 img->samplesperpixel >= 4)
2615 img->put.contig = putRGBAAcontig8bittile;
2616 else if (img->alpha == EXTRASAMPLE_UNASSALPHA &&
2617 img->samplesperpixel >= 4)
2618 {
2619 if (BuildMapUaToAa(img))
2620 img->put.contig = putRGBUAcontig8bittile;
2621 }
2622 else if( img->samplesperpixel >= 3 )
2623 img->put.contig = putRGBcontig8bittile;
2624 break;
2625 case 16:
2626 if (img->alpha == EXTRASAMPLE_ASSOCALPHA &&
2627 img->samplesperpixel >=4 )
2628 {
2629 if (BuildMapBitdepth16To8(img))
2630 img->put.contig = putRGBAAcontig16bittile;
2631 }
2632 else if (img->alpha == EXTRASAMPLE_UNASSALPHA &&
2633 img->samplesperpixel >=4 )
2634 {
2635 if (BuildMapBitdepth16To8(img) &&
2636 BuildMapUaToAa(img))
2637 img->put.contig = putRGBUAcontig16bittile;
2638 }
2639 else if( img->samplesperpixel >=3 )
2640 {
2641 if (BuildMapBitdepth16To8(img))
2642 img->put.contig = putRGBcontig16bittile;
2643 }
2644 break;
2645 }
2646 break;
2647 case PHOTOMETRIC_SEPARATED:
2648 if (img->samplesperpixel >=4 && buildMap(img)) {
2649 if (img->bitspersample == 8) {
2650 if (!img->Map)
2651 img->put.contig = putRGBcontig8bitCMYKtile;
2652 else
2653 img->put.contig = putRGBcontig8bitCMYKMaptile;
2654 }
2655 }
2656 break;
2657 case PHOTOMETRIC_PALETTE:
2658 if (buildMap(img)) {
2659 switch (img->bitspersample) {
2660 case 8:
2661 img->put.contig = put8bitcmaptile;
2662 break;
2663 case 4:
2664 img->put.contig = put4bitcmaptile;
2665 break;
2666 case 2:
2667 img->put.contig = put2bitcmaptile;
2668 break;
2669 case 1:
2670 img->put.contig = put1bitcmaptile;
2671 break;
2672 }
2673 }
2674 break;
2675 case PHOTOMETRIC_MINISWHITE:
2676 case PHOTOMETRIC_MINISBLACK:
2677 if (buildMap(img)) {
2678 switch (img->bitspersample) {
2679 case 16:
2680 img->put.contig = put16bitbwtile;
2681 break;
2682 case 8:
2683 if (img->alpha && img->samplesperpixel == 2)
2684 img->put.contig = putagreytile;
2685 else
2686 img->put.contig = putgreytile;
2687 break;
2688 case 4:
2689 img->put.contig = put4bitbwtile;
2690 break;
2691 case 2:
2692 img->put.contig = put2bitbwtile;
2693 break;
2694 case 1:
2695 img->put.contig = put1bitbwtile;
2696 break;
2697 }
2698 }
2699 break;
2700 case PHOTOMETRIC_YCBCR:
2701 if ((img->bitspersample==8) && (img->samplesperpixel==3))
2702 {
2703 if (initYCbCrConversion(img)!=0)
2704 {
2705 /*
2706 * The 6.0 spec says that subsampling must be
2707 * one of 1, 2, or 4, and that vertical subsampling
2708 * must always be <= horizontal subsampling; so
2709 * there are only a few possibilities and we just
2710 * enumerate the cases.
2711 * Joris: added support for the [1,2] case, nonetheless, to accommodate
2712 * some OJPEG files
2713 */
2714 uint16 SubsamplingHor;
2715 uint16 SubsamplingVer;
2716 TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &SubsamplingHor, &SubsamplingVer);
2717 switch ((SubsamplingHor<<4)|SubsamplingVer) {
2718 case 0x44:
2719 img->put.contig = putcontig8bitYCbCr44tile;
2720 break;
2721 case 0x42:
2722 img->put.contig = putcontig8bitYCbCr42tile;
2723 break;
2724 case 0x41:
2725 img->put.contig = putcontig8bitYCbCr41tile;
2726 break;
2727 case 0x22:
2728 img->put.contig = putcontig8bitYCbCr22tile;
2729 break;
2730 case 0x21:
2731 img->put.contig = putcontig8bitYCbCr21tile;
2732 break;
2733 case 0x12:
2734 img->put.contig = putcontig8bitYCbCr12tile;
2735 break;
2736 case 0x11:
2737 img->put.contig = putcontig8bitYCbCr11tile;
2738 break;
2739 }
2740 }
2741 }
2742 break;
2743 case PHOTOMETRIC_CIELAB:
2744 if (img->samplesperpixel == 3 && buildMap(img)) {
2745 if (img->bitspersample == 8)
2746 img->put.contig = initCIELabConversion(img);
2747 break;
2748 }
2749 }
2750 return ((img->get!=NULL) && (img->put.contig!=NULL));
2751 }
2752
2753 /*
2754 * Select the appropriate conversion routine for unpacked data.
2755 *
2756 * NB: we assume that unpacked single channel data is directed
2757 * to the "packed routines.
2758 */
2759 static int
PickSeparateCase(TIFFRGBAImage * img)2760 PickSeparateCase(TIFFRGBAImage* img)
2761 {
2762 img->get = TIFFIsTiled(img->tif) ? gtTileSeparate : gtStripSeparate;
2763 img->put.separate = NULL;
2764 switch (img->photometric) {
2765 case PHOTOMETRIC_MINISWHITE:
2766 case PHOTOMETRIC_MINISBLACK:
2767 /* greyscale images processed pretty much as RGB by gtTileSeparate */
2768 case PHOTOMETRIC_RGB:
2769 switch (img->bitspersample) {
2770 case 8:
2771 if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
2772 img->put.separate = putRGBAAseparate8bittile;
2773 else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
2774 {
2775 if (BuildMapUaToAa(img))
2776 img->put.separate = putRGBUAseparate8bittile;
2777 }
2778 else
2779 img->put.separate = putRGBseparate8bittile;
2780 break;
2781 case 16:
2782 if (img->alpha == EXTRASAMPLE_ASSOCALPHA)
2783 {
2784 if (BuildMapBitdepth16To8(img))
2785 img->put.separate = putRGBAAseparate16bittile;
2786 }
2787 else if (img->alpha == EXTRASAMPLE_UNASSALPHA)
2788 {
2789 if (BuildMapBitdepth16To8(img) &&
2790 BuildMapUaToAa(img))
2791 img->put.separate = putRGBUAseparate16bittile;
2792 }
2793 else
2794 {
2795 if (BuildMapBitdepth16To8(img))
2796 img->put.separate = putRGBseparate16bittile;
2797 }
2798 break;
2799 }
2800 break;
2801 case PHOTOMETRIC_SEPARATED:
2802 if (img->bitspersample == 8 && img->samplesperpixel == 4)
2803 {
2804 img->alpha = 1; // Not alpha, but seems like the only way to get 4th band
2805 img->put.separate = putCMYKseparate8bittile;
2806 }
2807 break;
2808 case PHOTOMETRIC_YCBCR:
2809 if ((img->bitspersample==8) && (img->samplesperpixel==3))
2810 {
2811 if (initYCbCrConversion(img)!=0)
2812 {
2813 uint16 hs, vs;
2814 TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, &hs, &vs);
2815 switch ((hs<<4)|vs) {
2816 case 0x11:
2817 img->put.separate = putseparate8bitYCbCr11tile;
2818 break;
2819 /* TODO: add other cases here */
2820 }
2821 }
2822 }
2823 break;
2824 }
2825 return ((img->get!=NULL) && (img->put.separate!=NULL));
2826 }
2827
2828 static int
BuildMapUaToAa(TIFFRGBAImage * img)2829 BuildMapUaToAa(TIFFRGBAImage* img)
2830 {
2831 static const char module[]="BuildMapUaToAa";
2832 uint8* m;
2833 uint16 na,nv;
2834 assert(img->UaToAa==NULL);
2835 img->UaToAa=_TIFFmalloc(65536);
2836 if (img->UaToAa==NULL)
2837 {
2838 TIFFErrorExt(img->tif->tif_clientdata,module,"Out of memory");
2839 return(0);
2840 }
2841 m=img->UaToAa;
2842 for (na=0; na<256; na++)
2843 {
2844 for (nv=0; nv<256; nv++)
2845 *m++=(uint8)((nv*na+127)/255);
2846 }
2847 return(1);
2848 }
2849
2850 static int
BuildMapBitdepth16To8(TIFFRGBAImage * img)2851 BuildMapBitdepth16To8(TIFFRGBAImage* img)
2852 {
2853 static const char module[]="BuildMapBitdepth16To8";
2854 uint8* m;
2855 uint32 n;
2856 assert(img->Bitdepth16To8==NULL);
2857 img->Bitdepth16To8=_TIFFmalloc(65536);
2858 if (img->Bitdepth16To8==NULL)
2859 {
2860 TIFFErrorExt(img->tif->tif_clientdata,module,"Out of memory");
2861 return(0);
2862 }
2863 m=img->Bitdepth16To8;
2864 for (n=0; n<65536; n++)
2865 *m++=(uint8)((n+128)/257);
2866 return(1);
2867 }
2868
2869
2870 /*
2871 * Read a whole strip off data from the file, and convert to RGBA form.
2872 * If this is the last strip, then it will only contain the portion of
2873 * the strip that is actually within the image space. The result is
2874 * organized in bottom to top form.
2875 */
2876
2877
2878 int
TIFFReadRGBAStrip(TIFF * tif,uint32 row,uint32 * raster)2879 TIFFReadRGBAStrip(TIFF* tif, uint32 row, uint32 * raster )
2880
2881 {
2882 return TIFFReadRGBAStripExt(tif, row, raster, 0 );
2883 }
2884
2885 int
TIFFReadRGBAStripExt(TIFF * tif,uint32 row,uint32 * raster,int stop_on_error)2886 TIFFReadRGBAStripExt(TIFF* tif, uint32 row, uint32 * raster, int stop_on_error)
2887
2888 {
2889 char emsg[1024] = "";
2890 TIFFRGBAImage img;
2891 int ok;
2892 uint32 rowsperstrip, rows_to_read;
2893
2894 if( TIFFIsTiled( tif ) )
2895 {
2896 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
2897 "Can't use TIFFReadRGBAStrip() with tiled file.");
2898 return (0);
2899 }
2900
2901 TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip);
2902 if( (row % rowsperstrip) != 0 )
2903 {
2904 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
2905 "Row passed to TIFFReadRGBAStrip() must be first in a strip.");
2906 return (0);
2907 }
2908
2909 if (TIFFRGBAImageOK(tif, emsg) && TIFFRGBAImageBegin(&img, tif, stop_on_error, emsg)) {
2910
2911 img.row_offset = row;
2912 img.col_offset = 0;
2913
2914 if( row + rowsperstrip > img.height )
2915 rows_to_read = img.height - row;
2916 else
2917 rows_to_read = rowsperstrip;
2918
2919 ok = TIFFRGBAImageGet(&img, raster, img.width, rows_to_read );
2920
2921 TIFFRGBAImageEnd(&img);
2922 } else {
2923 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
2924 ok = 0;
2925 }
2926
2927 return (ok);
2928 }
2929
2930 /*
2931 * Read a whole tile off data from the file, and convert to RGBA form.
2932 * The returned RGBA data is organized from bottom to top of tile,
2933 * and may include zeroed areas if the tile extends off the image.
2934 */
2935
2936 int
TIFFReadRGBATile(TIFF * tif,uint32 col,uint32 row,uint32 * raster)2937 TIFFReadRGBATile(TIFF* tif, uint32 col, uint32 row, uint32 * raster)
2938
2939 {
2940 return TIFFReadRGBATileExt(tif, col, row, raster, 0 );
2941 }
2942
2943
2944 int
TIFFReadRGBATileExt(TIFF * tif,uint32 col,uint32 row,uint32 * raster,int stop_on_error)2945 TIFFReadRGBATileExt(TIFF* tif, uint32 col, uint32 row, uint32 * raster, int stop_on_error )
2946 {
2947 char emsg[1024] = "";
2948 TIFFRGBAImage img;
2949 int ok;
2950 uint32 tile_xsize, tile_ysize;
2951 uint32 read_xsize, read_ysize;
2952 uint32 i_row;
2953
2954 /*
2955 * Verify that our request is legal - on a tile file, and on a
2956 * tile boundary.
2957 */
2958
2959 if( !TIFFIsTiled( tif ) )
2960 {
2961 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
2962 "Can't use TIFFReadRGBATile() with stripped file.");
2963 return (0);
2964 }
2965
2966 TIFFGetFieldDefaulted(tif, TIFFTAG_TILEWIDTH, &tile_xsize);
2967 TIFFGetFieldDefaulted(tif, TIFFTAG_TILELENGTH, &tile_ysize);
2968 if( (col % tile_xsize) != 0 || (row % tile_ysize) != 0 )
2969 {
2970 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif),
2971 "Row/col passed to TIFFReadRGBATile() must be top"
2972 "left corner of a tile.");
2973 return (0);
2974 }
2975
2976 /*
2977 * Setup the RGBA reader.
2978 */
2979
2980 if (!TIFFRGBAImageOK(tif, emsg)
2981 || !TIFFRGBAImageBegin(&img, tif, stop_on_error, emsg)) {
2982 TIFFErrorExt(tif->tif_clientdata, TIFFFileName(tif), "%s", emsg);
2983 return( 0 );
2984 }
2985
2986 /*
2987 * The TIFFRGBAImageGet() function doesn't allow us to get off the
2988 * edge of the image, even to fill an otherwise valid tile. So we
2989 * figure out how much we can read, and fix up the tile buffer to
2990 * a full tile configuration afterwards.
2991 */
2992
2993 if( row + tile_ysize > img.height )
2994 read_ysize = img.height - row;
2995 else
2996 read_ysize = tile_ysize;
2997
2998 if( col + tile_xsize > img.width )
2999 read_xsize = img.width - col;
3000 else
3001 read_xsize = tile_xsize;
3002
3003 /*
3004 * Read the chunk of imagery.
3005 */
3006
3007 img.row_offset = row;
3008 img.col_offset = col;
3009
3010 ok = TIFFRGBAImageGet(&img, raster, read_xsize, read_ysize );
3011
3012 TIFFRGBAImageEnd(&img);
3013
3014 /*
3015 * If our read was incomplete we will need to fix up the tile by
3016 * shifting the data around as if a full tile of data is being returned.
3017 *
3018 * This is all the more complicated because the image is organized in
3019 * bottom to top format.
3020 */
3021
3022 if( read_xsize == tile_xsize && read_ysize == tile_ysize )
3023 return( ok );
3024
3025 for( i_row = 0; i_row < read_ysize; i_row++ ) {
3026 memmove( raster + (tile_ysize - i_row - 1) * tile_xsize,
3027 raster + (read_ysize - i_row - 1) * read_xsize,
3028 read_xsize * sizeof(uint32) );
3029 _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize+read_xsize,
3030 0, sizeof(uint32) * (tile_xsize - read_xsize) );
3031 }
3032
3033 for( i_row = read_ysize; i_row < tile_ysize; i_row++ ) {
3034 _TIFFmemset( raster + (tile_ysize - i_row - 1) * tile_xsize,
3035 0, sizeof(uint32) * tile_xsize );
3036 }
3037
3038 return (ok);
3039 }
3040
3041 /* vim: set ts=8 sts=8 sw=8 noet: */
3042 /*
3043 * Local Variables:
3044 * mode: c
3045 * c-basic-offset: 8
3046 * fill-column: 78
3047 * End:
3048 */
3049