/src/libtiff/libtiff/tif_getimage.c
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1 | | /* |
2 | | * Copyright (c) 1991-1997 Sam Leffler |
3 | | * Copyright (c) 1991-1997 Silicon Graphics, Inc. |
4 | | * |
5 | | * Permission to use, copy, modify, distribute, and sell this software and |
6 | | * its documentation for any purpose is hereby granted without fee, provided |
7 | | * that (i) the above copyright notices and this permission notice appear in |
8 | | * all copies of the software and related documentation, and (ii) the names of |
9 | | * Sam Leffler and Silicon Graphics may not be used in any advertising or |
10 | | * publicity relating to the software without the specific, prior written |
11 | | * permission of Sam Leffler and Silicon Graphics. |
12 | | * |
13 | | * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND, |
14 | | * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY |
15 | | * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE. |
16 | | * |
17 | | * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR |
18 | | * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND, |
19 | | * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, |
20 | | * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF |
21 | | * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE |
22 | | * OF THIS SOFTWARE. |
23 | | */ |
24 | | |
25 | | /* |
26 | | * TIFF Library |
27 | | * |
28 | | * Read and return a packed RGBA image. |
29 | | */ |
30 | | #include "tiffiop.h" |
31 | | #include <limits.h> |
32 | | #include <math.h> |
33 | | #include <stdio.h> |
34 | | |
35 | | static int gtTileContig(TIFFRGBAImage *, uint32_t *, uint32_t, uint32_t); |
36 | | static int gtTileSeparate(TIFFRGBAImage *, uint32_t *, uint32_t, uint32_t); |
37 | | static int gtStripContig(TIFFRGBAImage *, uint32_t *, uint32_t, uint32_t); |
38 | | static int gtStripSeparate(TIFFRGBAImage *, uint32_t *, uint32_t, uint32_t); |
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 | 0 | #define FLIP_VERTICALLY 0x01 |
51 | 0 | #define FLIP_HORIZONTALLY 0x02 |
52 | | |
53 | 0 | #define EMSG_BUF_SIZE 1024 |
54 | | |
55 | | /* |
56 | | * Color conversion constants. We will define display types here. |
57 | | */ |
58 | | |
59 | | static const TIFFDisplay display_sRGB = { |
60 | | {/* XYZ -> luminance matrix */ |
61 | | {3.2410f, -1.5374f, -0.4986f}, |
62 | | {-0.9692f, 1.8760f, 0.0416f}, |
63 | | {0.0556f, -0.2040f, 1.0570f}}, |
64 | | 100.0f, |
65 | | 100.0f, |
66 | | 100.0f, /* Light o/p for reference white */ |
67 | | 255, |
68 | | 255, |
69 | | 255, /* Pixel values for ref. white */ |
70 | | 1.0f, |
71 | | 1.0f, |
72 | | 1.0f, /* Residual light o/p for black pixel */ |
73 | | 2.4f, |
74 | | 2.4f, |
75 | | 2.4f, /* Gamma values for the three guns */ |
76 | | }; |
77 | | |
78 | | /* |
79 | | * Check the image to see if TIFFReadRGBAImage can deal with it. |
80 | | * 1/0 is returned according to whether or not the image can |
81 | | * be handled. If 0 is returned, emsg contains the reason |
82 | | * why it is being rejected. |
83 | | */ |
84 | | int TIFFRGBAImageOK(TIFF *tif, char emsg[EMSG_BUF_SIZE]) |
85 | 0 | { |
86 | 0 | TIFFDirectory *td = &tif->tif_dir; |
87 | 0 | uint16_t photometric; |
88 | 0 | int colorchannels; |
89 | |
|
90 | 0 | if (!tif->tif_decodestatus) |
91 | 0 | { |
92 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
93 | 0 | "Sorry, requested compression method is not configured"); |
94 | 0 | return (0); |
95 | 0 | } |
96 | 0 | switch (td->td_bitspersample) |
97 | 0 | { |
98 | 0 | case 1: |
99 | 0 | case 2: |
100 | 0 | case 4: |
101 | 0 | case 8: |
102 | 0 | case 16: |
103 | 0 | break; |
104 | 0 | default: |
105 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
106 | 0 | "Sorry, can not handle images with %" PRIu16 |
107 | 0 | "-bit samples", |
108 | 0 | td->td_bitspersample); |
109 | 0 | return (0); |
110 | 0 | } |
111 | 0 | if (td->td_sampleformat == SAMPLEFORMAT_IEEEFP) |
112 | 0 | { |
113 | 0 | snprintf( |
114 | 0 | emsg, EMSG_BUF_SIZE, |
115 | 0 | "Sorry, can not handle images with IEEE floating-point samples"); |
116 | 0 | return (0); |
117 | 0 | } |
118 | 0 | colorchannels = td->td_samplesperpixel - td->td_extrasamples; |
119 | 0 | if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) |
120 | 0 | { |
121 | 0 | switch (colorchannels) |
122 | 0 | { |
123 | 0 | case 1: |
124 | 0 | photometric = PHOTOMETRIC_MINISBLACK; |
125 | 0 | break; |
126 | 0 | case 3: |
127 | 0 | photometric = PHOTOMETRIC_RGB; |
128 | 0 | break; |
129 | 0 | default: |
130 | 0 | snprintf(emsg, EMSG_BUF_SIZE, "Missing needed %s tag", |
131 | 0 | photoTag); |
132 | 0 | return (0); |
133 | 0 | } |
134 | 0 | } |
135 | 0 | switch (photometric) |
136 | 0 | { |
137 | 0 | case PHOTOMETRIC_MINISWHITE: |
138 | 0 | case PHOTOMETRIC_MINISBLACK: |
139 | 0 | case PHOTOMETRIC_PALETTE: |
140 | 0 | if (td->td_planarconfig == PLANARCONFIG_CONTIG && |
141 | 0 | td->td_samplesperpixel != 1 && td->td_bitspersample < 8) |
142 | 0 | { |
143 | 0 | snprintf( |
144 | 0 | emsg, EMSG_BUF_SIZE, |
145 | 0 | "Sorry, can not handle contiguous data with %s=%" PRIu16 |
146 | 0 | ", " |
147 | 0 | "and %s=%" PRIu16 " and Bits/Sample=%" PRIu16 "", |
148 | 0 | photoTag, photometric, "Samples/pixel", |
149 | 0 | td->td_samplesperpixel, td->td_bitspersample); |
150 | 0 | return (0); |
151 | 0 | } |
152 | | /* |
153 | | * We should likely validate that any extra samples are either |
154 | | * to be ignored, or are alpha, and if alpha we should try to use |
155 | | * them. But for now we won't bother with this. |
156 | | */ |
157 | 0 | break; |
158 | 0 | case PHOTOMETRIC_YCBCR: |
159 | | /* |
160 | | * TODO: if at all meaningful and useful, make more complete |
161 | | * support check here, or better still, refactor to let supporting |
162 | | * code decide whether there is support and what meaningful |
163 | | * error to return |
164 | | */ |
165 | 0 | break; |
166 | 0 | case PHOTOMETRIC_RGB: |
167 | 0 | if (colorchannels < 3) |
168 | 0 | { |
169 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
170 | 0 | "Sorry, can not handle RGB image with %s=%d", |
171 | 0 | "Color channels", colorchannels); |
172 | 0 | return (0); |
173 | 0 | } |
174 | 0 | break; |
175 | 0 | case PHOTOMETRIC_SEPARATED: |
176 | 0 | { |
177 | 0 | uint16_t inkset; |
178 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset); |
179 | 0 | if (inkset != INKSET_CMYK) |
180 | 0 | { |
181 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
182 | 0 | "Sorry, can not handle separated image with %s=%d", |
183 | 0 | "InkSet", inkset); |
184 | 0 | return 0; |
185 | 0 | } |
186 | 0 | if (td->td_samplesperpixel < 4) |
187 | 0 | { |
188 | 0 | snprintf( |
189 | 0 | emsg, EMSG_BUF_SIZE, |
190 | 0 | "Sorry, can not handle separated image with %s=%" PRIu16, |
191 | 0 | "Samples/pixel", td->td_samplesperpixel); |
192 | 0 | return 0; |
193 | 0 | } |
194 | 0 | break; |
195 | 0 | } |
196 | 0 | case PHOTOMETRIC_LOGL: |
197 | 0 | if (td->td_compression != COMPRESSION_SGILOG) |
198 | 0 | { |
199 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
200 | 0 | "Sorry, LogL data must have %s=%d", "Compression", |
201 | 0 | COMPRESSION_SGILOG); |
202 | 0 | return (0); |
203 | 0 | } |
204 | 0 | break; |
205 | 0 | case PHOTOMETRIC_LOGLUV: |
206 | 0 | if (td->td_compression != COMPRESSION_SGILOG && |
207 | 0 | td->td_compression != COMPRESSION_SGILOG24) |
208 | 0 | { |
209 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
210 | 0 | "Sorry, LogLuv data must have %s=%d or %d", |
211 | 0 | "Compression", COMPRESSION_SGILOG, |
212 | 0 | COMPRESSION_SGILOG24); |
213 | 0 | return (0); |
214 | 0 | } |
215 | 0 | if (td->td_planarconfig != PLANARCONFIG_CONTIG) |
216 | 0 | { |
217 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
218 | 0 | "Sorry, can not handle LogLuv images with %s=%" PRIu16, |
219 | 0 | "Planarconfiguration", td->td_planarconfig); |
220 | 0 | return (0); |
221 | 0 | } |
222 | 0 | if (td->td_samplesperpixel != 3 || colorchannels != 3) |
223 | 0 | { |
224 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
225 | 0 | "Sorry, can not handle image with %s=%" PRIu16 |
226 | 0 | ", %s=%d", |
227 | 0 | "Samples/pixel", td->td_samplesperpixel, |
228 | 0 | "colorchannels", colorchannels); |
229 | 0 | return 0; |
230 | 0 | } |
231 | 0 | break; |
232 | 0 | case PHOTOMETRIC_CIELAB: |
233 | 0 | if (td->td_samplesperpixel != 3 || colorchannels != 3 || |
234 | 0 | (td->td_bitspersample != 8 && td->td_bitspersample != 16)) |
235 | 0 | { |
236 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
237 | 0 | "Sorry, can not handle image with %s=%" PRIu16 |
238 | 0 | ", %s=%d and %s=%" PRIu16, |
239 | 0 | "Samples/pixel", td->td_samplesperpixel, |
240 | 0 | "colorchannels", colorchannels, "Bits/sample", |
241 | 0 | td->td_bitspersample); |
242 | 0 | return 0; |
243 | 0 | } |
244 | 0 | break; |
245 | 0 | default: |
246 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
247 | 0 | "Sorry, can not handle image with %s=%" PRIu16, photoTag, |
248 | 0 | photometric); |
249 | 0 | return (0); |
250 | 0 | } |
251 | 0 | return (1); |
252 | 0 | } |
253 | | |
254 | | void TIFFRGBAImageEnd(TIFFRGBAImage *img) |
255 | 0 | { |
256 | 0 | if (img->Map) |
257 | 0 | { |
258 | 0 | _TIFFfreeExt(img->tif, img->Map); |
259 | 0 | img->Map = NULL; |
260 | 0 | } |
261 | 0 | if (img->BWmap) |
262 | 0 | { |
263 | 0 | _TIFFfreeExt(img->tif, img->BWmap); |
264 | 0 | img->BWmap = NULL; |
265 | 0 | } |
266 | 0 | if (img->PALmap) |
267 | 0 | { |
268 | 0 | _TIFFfreeExt(img->tif, img->PALmap); |
269 | 0 | img->PALmap = NULL; |
270 | 0 | } |
271 | 0 | if (img->ycbcr) |
272 | 0 | { |
273 | 0 | _TIFFfreeExt(img->tif, img->ycbcr); |
274 | 0 | img->ycbcr = NULL; |
275 | 0 | } |
276 | 0 | if (img->cielab) |
277 | 0 | { |
278 | 0 | _TIFFfreeExt(img->tif, img->cielab); |
279 | 0 | img->cielab = NULL; |
280 | 0 | } |
281 | 0 | if (img->UaToAa) |
282 | 0 | { |
283 | 0 | _TIFFfreeExt(img->tif, img->UaToAa); |
284 | 0 | img->UaToAa = NULL; |
285 | 0 | } |
286 | 0 | if (img->Bitdepth16To8) |
287 | 0 | { |
288 | 0 | _TIFFfreeExt(img->tif, img->Bitdepth16To8); |
289 | 0 | img->Bitdepth16To8 = NULL; |
290 | 0 | } |
291 | |
|
292 | 0 | if (img->redcmap) |
293 | 0 | { |
294 | 0 | _TIFFfreeExt(img->tif, img->redcmap); |
295 | 0 | _TIFFfreeExt(img->tif, img->greencmap); |
296 | 0 | _TIFFfreeExt(img->tif, img->bluecmap); |
297 | 0 | img->redcmap = img->greencmap = img->bluecmap = NULL; |
298 | 0 | } |
299 | 0 | } |
300 | | |
301 | | static int isCCITTCompression(TIFF *tif) |
302 | 0 | { |
303 | 0 | uint16_t compress; |
304 | 0 | TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress); |
305 | 0 | return (compress == COMPRESSION_CCITTFAX3 || |
306 | 0 | compress == COMPRESSION_CCITTFAX4 || |
307 | 0 | compress == COMPRESSION_CCITTRLE || |
308 | 0 | compress == COMPRESSION_CCITTRLEW); |
309 | 0 | } |
310 | | |
311 | | int TIFFRGBAImageBegin(TIFFRGBAImage *img, TIFF *tif, int stop, |
312 | | char emsg[EMSG_BUF_SIZE]) |
313 | 0 | { |
314 | 0 | uint16_t *sampleinfo; |
315 | 0 | uint16_t extrasamples; |
316 | 0 | uint16_t planarconfig; |
317 | 0 | uint16_t compress; |
318 | 0 | int colorchannels; |
319 | 0 | uint16_t *red_orig, *green_orig, *blue_orig; |
320 | 0 | uint32_t n_color; |
321 | |
|
322 | 0 | if (!TIFFRGBAImageOK(tif, emsg)) |
323 | 0 | return 0; |
324 | | |
325 | | /* Initialize to normal values */ |
326 | 0 | img->row_offset = 0; |
327 | 0 | img->col_offset = 0; |
328 | 0 | img->redcmap = NULL; |
329 | 0 | img->greencmap = NULL; |
330 | 0 | img->bluecmap = NULL; |
331 | 0 | img->Map = NULL; |
332 | 0 | img->BWmap = NULL; |
333 | 0 | img->PALmap = NULL; |
334 | 0 | img->ycbcr = NULL; |
335 | 0 | img->cielab = NULL; |
336 | 0 | img->UaToAa = NULL; |
337 | 0 | img->Bitdepth16To8 = NULL; |
338 | 0 | img->req_orientation = ORIENTATION_BOTLEFT; /* It is the default */ |
339 | |
|
340 | 0 | img->tif = tif; |
341 | 0 | img->stoponerr = stop; |
342 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE, &img->bitspersample); |
343 | 0 | switch (img->bitspersample) |
344 | 0 | { |
345 | 0 | case 1: |
346 | 0 | case 2: |
347 | 0 | case 4: |
348 | 0 | case 8: |
349 | 0 | case 16: |
350 | 0 | break; |
351 | 0 | default: |
352 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
353 | 0 | "Sorry, can not handle images with %" PRIu16 |
354 | 0 | "-bit samples", |
355 | 0 | img->bitspersample); |
356 | 0 | goto fail_return; |
357 | 0 | } |
358 | 0 | img->alpha = 0; |
359 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL, &img->samplesperpixel); |
360 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES, &extrasamples, |
361 | 0 | &sampleinfo); |
362 | 0 | if (extrasamples >= 1) |
363 | 0 | { |
364 | 0 | switch (sampleinfo[0]) |
365 | 0 | { |
366 | 0 | case EXTRASAMPLE_UNSPECIFIED: /* Workaround for some images without |
367 | | */ |
368 | 0 | if (img->samplesperpixel > |
369 | 0 | 3) /* correct info about alpha channel */ |
370 | 0 | img->alpha = EXTRASAMPLE_ASSOCALPHA; |
371 | 0 | break; |
372 | 0 | case EXTRASAMPLE_ASSOCALPHA: /* data is pre-multiplied */ |
373 | 0 | case EXTRASAMPLE_UNASSALPHA: /* data is not pre-multiplied */ |
374 | 0 | img->alpha = sampleinfo[0]; |
375 | 0 | break; |
376 | 0 | default: |
377 | 0 | break; |
378 | 0 | } |
379 | 0 | } |
380 | | |
381 | 0 | #ifdef DEFAULT_EXTRASAMPLE_AS_ALPHA |
382 | 0 | if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) |
383 | 0 | img->photometric = PHOTOMETRIC_MINISWHITE; |
384 | |
|
385 | 0 | if (extrasamples == 0 && img->samplesperpixel == 4 && |
386 | 0 | img->photometric == PHOTOMETRIC_RGB) |
387 | 0 | { |
388 | 0 | img->alpha = EXTRASAMPLE_ASSOCALPHA; |
389 | 0 | extrasamples = 1; |
390 | 0 | } |
391 | 0 | #endif |
392 | |
|
393 | 0 | colorchannels = img->samplesperpixel - extrasamples; |
394 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_COMPRESSION, &compress); |
395 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG, &planarconfig); |
396 | 0 | if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &img->photometric)) |
397 | 0 | { |
398 | 0 | switch (colorchannels) |
399 | 0 | { |
400 | 0 | case 1: |
401 | 0 | if (isCCITTCompression(tif)) |
402 | 0 | img->photometric = PHOTOMETRIC_MINISWHITE; |
403 | 0 | else |
404 | 0 | img->photometric = PHOTOMETRIC_MINISBLACK; |
405 | 0 | break; |
406 | 0 | case 3: |
407 | 0 | img->photometric = PHOTOMETRIC_RGB; |
408 | 0 | break; |
409 | 0 | default: |
410 | 0 | snprintf(emsg, EMSG_BUF_SIZE, "Missing needed %s tag", |
411 | 0 | photoTag); |
412 | 0 | goto fail_return; |
413 | 0 | } |
414 | 0 | } |
415 | 0 | switch (img->photometric) |
416 | 0 | { |
417 | 0 | case PHOTOMETRIC_PALETTE: |
418 | 0 | if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &red_orig, &green_orig, |
419 | 0 | &blue_orig)) |
420 | 0 | { |
421 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
422 | 0 | "Missing required \"Colormap\" tag"); |
423 | 0 | goto fail_return; |
424 | 0 | } |
425 | | |
426 | | /* copy the colormaps so we can modify them */ |
427 | 0 | n_color = (uint32_t)(1U << img->bitspersample); |
428 | 0 | img->redcmap = (uint16_t *)_TIFFmallocExt( |
429 | 0 | tif, (tmsize_t)(sizeof(uint16_t) * (size_t)n_color)); |
430 | 0 | img->greencmap = (uint16_t *)_TIFFmallocExt( |
431 | 0 | tif, (tmsize_t)(sizeof(uint16_t) * (size_t)n_color)); |
432 | 0 | img->bluecmap = (uint16_t *)_TIFFmallocExt( |
433 | 0 | tif, (tmsize_t)(sizeof(uint16_t) * (size_t)n_color)); |
434 | 0 | if (!img->redcmap || !img->greencmap || !img->bluecmap) |
435 | 0 | { |
436 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
437 | 0 | "Out of memory for colormap copy"); |
438 | 0 | goto fail_return; |
439 | 0 | } |
440 | | |
441 | 0 | _TIFFmemcpy(img->redcmap, red_orig, n_color * 2); |
442 | 0 | _TIFFmemcpy(img->greencmap, green_orig, n_color * 2); |
443 | 0 | _TIFFmemcpy(img->bluecmap, blue_orig, n_color * 2); |
444 | | |
445 | | /* fall through... */ |
446 | 0 | case PHOTOMETRIC_MINISWHITE: |
447 | 0 | case PHOTOMETRIC_MINISBLACK: |
448 | 0 | if (planarconfig == PLANARCONFIG_CONTIG && |
449 | 0 | img->samplesperpixel != 1 && img->bitspersample < 8) |
450 | 0 | { |
451 | 0 | snprintf( |
452 | 0 | emsg, EMSG_BUF_SIZE, |
453 | 0 | "Sorry, can not handle contiguous data with %s=%" PRIu16 |
454 | 0 | ", " |
455 | 0 | "and %s=%" PRIu16 " and Bits/Sample=%" PRIu16, |
456 | 0 | photoTag, img->photometric, "Samples/pixel", |
457 | 0 | img->samplesperpixel, img->bitspersample); |
458 | 0 | goto fail_return; |
459 | 0 | } |
460 | 0 | break; |
461 | 0 | case PHOTOMETRIC_YCBCR: |
462 | | /* It would probably be nice to have a reality check here. */ |
463 | 0 | if (planarconfig == PLANARCONFIG_CONTIG) |
464 | | /* can rely on libjpeg to convert to RGB */ |
465 | | /* XXX should restore current state on exit */ |
466 | 0 | switch (compress) |
467 | 0 | { |
468 | 0 | case COMPRESSION_JPEG: |
469 | | /* |
470 | | * TODO: when complete tests verify complete |
471 | | * desubsampling and YCbCr handling, remove use of |
472 | | * TIFFTAG_JPEGCOLORMODE in favor of tif_getimage.c |
473 | | * native handling |
474 | | */ |
475 | 0 | TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE, |
476 | 0 | JPEGCOLORMODE_RGB); |
477 | 0 | img->photometric = PHOTOMETRIC_RGB; |
478 | 0 | break; |
479 | 0 | default: |
480 | 0 | /* do nothing */; |
481 | 0 | break; |
482 | 0 | } |
483 | | /* |
484 | | * TODO: if at all meaningful and useful, make more complete |
485 | | * support check here, or better still, refactor to let supporting |
486 | | * code decide whether there is support and what meaningful |
487 | | * error to return |
488 | | */ |
489 | 0 | break; |
490 | 0 | case PHOTOMETRIC_RGB: |
491 | 0 | if (colorchannels < 3) |
492 | 0 | { |
493 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
494 | 0 | "Sorry, can not handle RGB image with %s=%d", |
495 | 0 | "Color channels", colorchannels); |
496 | 0 | goto fail_return; |
497 | 0 | } |
498 | 0 | break; |
499 | 0 | case PHOTOMETRIC_SEPARATED: |
500 | 0 | { |
501 | 0 | uint16_t inkset; |
502 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_INKSET, &inkset); |
503 | 0 | if (inkset != INKSET_CMYK) |
504 | 0 | { |
505 | 0 | snprintf( |
506 | 0 | emsg, EMSG_BUF_SIZE, |
507 | 0 | "Sorry, can not handle separated image with %s=%" PRIu16, |
508 | 0 | "InkSet", inkset); |
509 | 0 | goto fail_return; |
510 | 0 | } |
511 | 0 | if (img->samplesperpixel < 4) |
512 | 0 | { |
513 | 0 | snprintf( |
514 | 0 | emsg, EMSG_BUF_SIZE, |
515 | 0 | "Sorry, can not handle separated image with %s=%" PRIu16, |
516 | 0 | "Samples/pixel", img->samplesperpixel); |
517 | 0 | goto fail_return; |
518 | 0 | } |
519 | 0 | } |
520 | 0 | break; |
521 | 0 | case PHOTOMETRIC_LOGL: |
522 | 0 | if (compress != COMPRESSION_SGILOG) |
523 | 0 | { |
524 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
525 | 0 | "Sorry, LogL data must have %s=%d", "Compression", |
526 | 0 | COMPRESSION_SGILOG); |
527 | 0 | goto fail_return; |
528 | 0 | } |
529 | 0 | TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT); |
530 | 0 | img->photometric = PHOTOMETRIC_MINISBLACK; /* little white lie */ |
531 | 0 | img->bitspersample = 8; |
532 | 0 | break; |
533 | 0 | case PHOTOMETRIC_LOGLUV: |
534 | 0 | if (compress != COMPRESSION_SGILOG && |
535 | 0 | compress != COMPRESSION_SGILOG24) |
536 | 0 | { |
537 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
538 | 0 | "Sorry, LogLuv data must have %s=%d or %d", |
539 | 0 | "Compression", COMPRESSION_SGILOG, |
540 | 0 | COMPRESSION_SGILOG24); |
541 | 0 | goto fail_return; |
542 | 0 | } |
543 | 0 | if (planarconfig != PLANARCONFIG_CONTIG) |
544 | 0 | { |
545 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
546 | 0 | "Sorry, can not handle LogLuv images with %s=%" PRIu16, |
547 | 0 | "Planarconfiguration", planarconfig); |
548 | 0 | return (0); |
549 | 0 | } |
550 | 0 | TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT); |
551 | 0 | img->photometric = PHOTOMETRIC_RGB; /* little white lie */ |
552 | 0 | img->bitspersample = 8; |
553 | 0 | break; |
554 | 0 | case PHOTOMETRIC_CIELAB: |
555 | 0 | break; |
556 | 0 | default: |
557 | 0 | snprintf(emsg, EMSG_BUF_SIZE, |
558 | 0 | "Sorry, can not handle image with %s=%" PRIu16, photoTag, |
559 | 0 | img->photometric); |
560 | 0 | goto fail_return; |
561 | 0 | } |
562 | 0 | TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &img->width); |
563 | 0 | TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &img->height); |
564 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_ORIENTATION, &img->orientation); |
565 | 0 | img->isContig = |
566 | 0 | !(planarconfig == PLANARCONFIG_SEPARATE && img->samplesperpixel > 1); |
567 | 0 | if (img->isContig) |
568 | 0 | { |
569 | 0 | if (!PickContigCase(img)) |
570 | 0 | { |
571 | 0 | snprintf(emsg, EMSG_BUF_SIZE, "Sorry, can not handle image"); |
572 | 0 | goto fail_return; |
573 | 0 | } |
574 | 0 | } |
575 | 0 | else |
576 | 0 | { |
577 | 0 | if (!PickSeparateCase(img)) |
578 | 0 | { |
579 | 0 | snprintf(emsg, EMSG_BUF_SIZE, "Sorry, can not handle image"); |
580 | 0 | goto fail_return; |
581 | 0 | } |
582 | 0 | } |
583 | 0 | return 1; |
584 | | |
585 | 0 | fail_return: |
586 | 0 | TIFFRGBAImageEnd(img); |
587 | 0 | return 0; |
588 | 0 | } |
589 | | |
590 | | int TIFFRGBAImageGet(TIFFRGBAImage *img, uint32_t *raster, uint32_t w, |
591 | | uint32_t h) |
592 | 0 | { |
593 | 0 | if (img->get == NULL) |
594 | 0 | { |
595 | 0 | TIFFErrorExtR(img->tif, TIFFFileName(img->tif), |
596 | 0 | "No \"get\" routine setup"); |
597 | 0 | return (0); |
598 | 0 | } |
599 | 0 | if (img->put.any == NULL) |
600 | 0 | { |
601 | 0 | TIFFErrorExtR( |
602 | 0 | img->tif, TIFFFileName(img->tif), |
603 | 0 | "No \"put\" routine setupl; probably can not handle image format"); |
604 | 0 | return (0); |
605 | 0 | } |
606 | | /* Verify raster height against image height. |
607 | | * Width is checked in img->get() function individually. */ |
608 | 0 | if (0 <= img->row_offset && (uint32_t)img->row_offset < img->height) |
609 | 0 | { |
610 | 0 | uint32_t hx = img->height - (uint32_t)img->row_offset; |
611 | 0 | if (h > hx) |
612 | 0 | { |
613 | | /* Adapt parameters to read only available lines and put image |
614 | | * at the bottom of the raster. */ |
615 | 0 | raster += (size_t)(h - hx) * w; |
616 | 0 | h = hx; |
617 | 0 | } |
618 | 0 | } |
619 | 0 | else |
620 | 0 | { |
621 | 0 | TIFFErrorExtR(img->tif, TIFFFileName(img->tif), |
622 | 0 | "Error in TIFFRGBAImageGet: row offset %d exceeds " |
623 | 0 | "image height %u", |
624 | 0 | img->row_offset, img->height); |
625 | 0 | return 0; |
626 | 0 | } |
627 | 0 | return (*img->get)(img, raster, w, h); |
628 | 0 | } |
629 | | |
630 | | /* |
631 | | * Read the specified image into an ABGR-format rastertaking in account |
632 | | * specified orientation. |
633 | | */ |
634 | | int TIFFReadRGBAImageOriented(TIFF *tif, uint32_t rwidth, uint32_t rheight, |
635 | | uint32_t *raster, int orientation, int stop) |
636 | 0 | { |
637 | 0 | char emsg[EMSG_BUF_SIZE] = ""; |
638 | 0 | TIFFRGBAImage img; |
639 | 0 | int ok; |
640 | |
|
641 | 0 | if (TIFFRGBAImageBegin(&img, tif, stop, emsg)) |
642 | 0 | { |
643 | 0 | img.req_orientation = (uint16_t)orientation; |
644 | 0 | ok = TIFFRGBAImageGet(&img, raster, rwidth, rheight); |
645 | 0 | TIFFRGBAImageEnd(&img); |
646 | 0 | } |
647 | 0 | else |
648 | 0 | { |
649 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", emsg); |
650 | 0 | ok = 0; |
651 | 0 | } |
652 | 0 | return (ok); |
653 | 0 | } |
654 | | |
655 | | /* |
656 | | * Read the specified image into an ABGR-format raster. Use bottom left |
657 | | * origin for raster by default. |
658 | | */ |
659 | | int TIFFReadRGBAImage(TIFF *tif, uint32_t rwidth, uint32_t rheight, |
660 | | uint32_t *raster, int stop) |
661 | 0 | { |
662 | 0 | return TIFFReadRGBAImageOriented(tif, rwidth, rheight, raster, |
663 | 0 | ORIENTATION_BOTLEFT, stop); |
664 | 0 | } |
665 | | |
666 | | static int setorientation(TIFFRGBAImage *img) |
667 | 0 | { |
668 | 0 | switch (img->orientation) |
669 | 0 | { |
670 | 0 | case ORIENTATION_TOPLEFT: |
671 | 0 | case ORIENTATION_LEFTTOP: |
672 | 0 | if (img->req_orientation == ORIENTATION_TOPRIGHT || |
673 | 0 | img->req_orientation == ORIENTATION_RIGHTTOP) |
674 | 0 | return FLIP_HORIZONTALLY; |
675 | 0 | else if (img->req_orientation == ORIENTATION_BOTRIGHT || |
676 | 0 | img->req_orientation == ORIENTATION_RIGHTBOT) |
677 | 0 | return FLIP_HORIZONTALLY | FLIP_VERTICALLY; |
678 | 0 | else if (img->req_orientation == ORIENTATION_BOTLEFT || |
679 | 0 | img->req_orientation == ORIENTATION_LEFTBOT) |
680 | 0 | return FLIP_VERTICALLY; |
681 | 0 | else |
682 | 0 | return 0; |
683 | 0 | case ORIENTATION_TOPRIGHT: |
684 | 0 | case ORIENTATION_RIGHTTOP: |
685 | 0 | if (img->req_orientation == ORIENTATION_TOPLEFT || |
686 | 0 | img->req_orientation == ORIENTATION_LEFTTOP) |
687 | 0 | return FLIP_HORIZONTALLY; |
688 | 0 | else if (img->req_orientation == ORIENTATION_BOTRIGHT || |
689 | 0 | img->req_orientation == ORIENTATION_RIGHTBOT) |
690 | 0 | return FLIP_VERTICALLY; |
691 | 0 | else if (img->req_orientation == ORIENTATION_BOTLEFT || |
692 | 0 | img->req_orientation == ORIENTATION_LEFTBOT) |
693 | 0 | return FLIP_HORIZONTALLY | FLIP_VERTICALLY; |
694 | 0 | else |
695 | 0 | return 0; |
696 | 0 | case ORIENTATION_BOTRIGHT: |
697 | 0 | case ORIENTATION_RIGHTBOT: |
698 | 0 | if (img->req_orientation == ORIENTATION_TOPLEFT || |
699 | 0 | img->req_orientation == ORIENTATION_LEFTTOP) |
700 | 0 | return FLIP_HORIZONTALLY | FLIP_VERTICALLY; |
701 | 0 | else if (img->req_orientation == ORIENTATION_TOPRIGHT || |
702 | 0 | img->req_orientation == ORIENTATION_RIGHTTOP) |
703 | 0 | return FLIP_VERTICALLY; |
704 | 0 | else if (img->req_orientation == ORIENTATION_BOTLEFT || |
705 | 0 | img->req_orientation == ORIENTATION_LEFTBOT) |
706 | 0 | return FLIP_HORIZONTALLY; |
707 | 0 | else |
708 | 0 | return 0; |
709 | 0 | case ORIENTATION_BOTLEFT: |
710 | 0 | case ORIENTATION_LEFTBOT: |
711 | 0 | if (img->req_orientation == ORIENTATION_TOPLEFT || |
712 | 0 | img->req_orientation == ORIENTATION_LEFTTOP) |
713 | 0 | return FLIP_VERTICALLY; |
714 | 0 | else if (img->req_orientation == ORIENTATION_TOPRIGHT || |
715 | 0 | img->req_orientation == ORIENTATION_RIGHTTOP) |
716 | 0 | return FLIP_HORIZONTALLY | FLIP_VERTICALLY; |
717 | 0 | else if (img->req_orientation == ORIENTATION_BOTRIGHT || |
718 | 0 | img->req_orientation == ORIENTATION_RIGHTBOT) |
719 | 0 | return FLIP_HORIZONTALLY; |
720 | 0 | else |
721 | 0 | return 0; |
722 | 0 | default: /* NOTREACHED */ |
723 | 0 | return 0; |
724 | 0 | } |
725 | 0 | } |
726 | | |
727 | | /* |
728 | | * Get an tile-organized image that has |
729 | | * PlanarConfiguration contiguous if SamplesPerPixel > 1 |
730 | | * or |
731 | | * SamplesPerPixel == 1 |
732 | | */ |
733 | | static int gtTileContig(TIFFRGBAImage *img, uint32_t *raster, uint32_t w, |
734 | | uint32_t h) |
735 | 0 | { |
736 | 0 | TIFF *tif = img->tif; |
737 | 0 | tileContigRoutine put = img->put.contig; |
738 | 0 | uint32_t col, row, y, rowstoread; |
739 | 0 | tmsize_t pos; |
740 | 0 | uint32_t tw, th; |
741 | 0 | unsigned char *buf = NULL; |
742 | 0 | int32_t fromskew, toskew; |
743 | 0 | uint32_t nrow; |
744 | 0 | int ret = 1, flip; |
745 | 0 | uint32_t this_tw, tocol; |
746 | 0 | int32_t this_toskew, leftmost_toskew; |
747 | 0 | int32_t leftmost_fromskew; |
748 | 0 | uint32_t leftmost_tw; |
749 | 0 | tmsize_t bufsize; |
750 | | |
751 | | /* If the raster is smaller than the image, |
752 | | * or if there is a col_offset, adapt the samples to be copied per row. */ |
753 | 0 | uint32_t wmin; |
754 | |
|
755 | 0 | if (0 <= img->col_offset && (uint32_t)img->col_offset < img->width) |
756 | 0 | { |
757 | 0 | wmin = TIFFmin(w, img->width - (uint32_t)img->col_offset); |
758 | 0 | } |
759 | 0 | else |
760 | 0 | { |
761 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
762 | 0 | "Error in gtTileContig: column offset %d exceeds " |
763 | 0 | "image width %u", |
764 | 0 | img->col_offset, img->width); |
765 | 0 | return 0; |
766 | 0 | } |
767 | 0 | bufsize = TIFFTileSize(tif); |
768 | 0 | if (bufsize == 0) |
769 | 0 | { |
770 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", "No space for tile buffer"); |
771 | 0 | return (0); |
772 | 0 | } |
773 | | |
774 | 0 | TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); |
775 | 0 | TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); |
776 | |
|
777 | 0 | flip = setorientation(img); |
778 | 0 | if (flip & FLIP_VERTICALLY) |
779 | 0 | { |
780 | 0 | if (((int64_t)tw + w) > INT_MAX) |
781 | 0 | { |
782 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", |
783 | 0 | "unsupported tile size (too wide)"); |
784 | 0 | return (0); |
785 | 0 | } |
786 | 0 | y = h - 1; |
787 | 0 | toskew = -(int32_t)(tw + w); |
788 | 0 | } |
789 | 0 | else |
790 | 0 | { |
791 | 0 | if (tw > ((int64_t)INT_MAX + w) || w > ((int64_t)INT_MAX + tw)) |
792 | 0 | { |
793 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", |
794 | 0 | "unsupported tile size (too wide)"); |
795 | 0 | return (0); |
796 | 0 | } |
797 | 0 | y = 0; |
798 | 0 | toskew = -(int32_t)(tw - w); |
799 | 0 | } |
800 | | |
801 | 0 | if (tw == 0 || th == 0) |
802 | 0 | { |
803 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "tile width or height is zero"); |
804 | 0 | return (0); |
805 | 0 | } |
806 | | |
807 | | /* |
808 | | * Leftmost tile is clipped on left side if col_offset > 0. |
809 | | */ |
810 | 0 | leftmost_fromskew = (int32_t)((uint32_t)img->col_offset % tw); |
811 | 0 | leftmost_tw = (uint32_t)((int32_t)tw - leftmost_fromskew); |
812 | 0 | int64_t skew_i64 = (int64_t)toskew + (int64_t)(int32_t)leftmost_fromskew; |
813 | 0 | if (skew_i64 > INT_MAX || skew_i64 < INT_MIN) |
814 | 0 | { |
815 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s %" PRId64, "Invalid skew", |
816 | 0 | skew_i64); |
817 | 0 | return (0); |
818 | 0 | } |
819 | 0 | leftmost_toskew = (int32_t)skew_i64; |
820 | 0 | for (row = 0; ret != 0 && row < h; row += nrow) |
821 | 0 | { |
822 | 0 | rowstoread = th - ((uint32_t)row + (uint32_t)img->row_offset) % th; |
823 | 0 | nrow = (row + rowstoread > h ? h - row : rowstoread); |
824 | 0 | fromskew = leftmost_fromskew; |
825 | 0 | this_tw = leftmost_tw; |
826 | 0 | this_toskew = leftmost_toskew; |
827 | 0 | tocol = 0; |
828 | 0 | col = (uint32_t)img->col_offset; |
829 | | /* wmin: only write imagewidth if raster is bigger. */ |
830 | 0 | while (tocol < wmin) |
831 | 0 | { |
832 | 0 | if (_TIFFReadTileAndAllocBuffer(tif, (void **)&buf, bufsize, col, |
833 | 0 | (uint32_t)row + |
834 | 0 | (uint32_t)img->row_offset, |
835 | 0 | 0, 0) == (tmsize_t)(-1) && |
836 | 0 | (buf == NULL || img->stoponerr)) |
837 | 0 | { |
838 | 0 | ret = 0; |
839 | 0 | break; |
840 | 0 | } |
841 | 0 | pos = (((uint32_t)row + (uint32_t)img->row_offset) % th) * |
842 | 0 | TIFFTileRowSize(tif) + |
843 | 0 | ((tmsize_t)fromskew * img->samplesperpixel); |
844 | 0 | if (tocol + this_tw > wmin) |
845 | 0 | { |
846 | | /* |
847 | | * Rightmost tile is clipped on right side. |
848 | | */ |
849 | 0 | fromskew = (int32_t)(tw - (wmin - tocol)); |
850 | 0 | this_tw = (uint32_t)((int32_t)tw - fromskew); |
851 | 0 | this_toskew = (int32_t)(toskew + (int32_t)(uint32_t)fromskew); |
852 | 0 | } |
853 | 0 | tmsize_t roffset = (tmsize_t)y * w + tocol; |
854 | 0 | (*put)(img, raster + roffset, tocol, y, this_tw, nrow, fromskew, |
855 | 0 | this_toskew, buf + pos); |
856 | 0 | tocol += this_tw; |
857 | 0 | col += this_tw; |
858 | | /* |
859 | | * After the leftmost tile, tiles are no longer clipped on left |
860 | | * side. |
861 | | */ |
862 | 0 | fromskew = 0; |
863 | 0 | this_tw = tw; |
864 | 0 | this_toskew = toskew; |
865 | 0 | } |
866 | |
|
867 | 0 | y += (uint32_t)((flip & FLIP_VERTICALLY) ? -(int32_t)nrow |
868 | 0 | : (int32_t)nrow); |
869 | 0 | } |
870 | 0 | _TIFFfreeExt(img->tif, buf); |
871 | |
|
872 | 0 | if (flip & FLIP_HORIZONTALLY) |
873 | 0 | { |
874 | 0 | uint32_t line; |
875 | |
|
876 | 0 | for (line = 0; line < h; line++) |
877 | 0 | { |
878 | 0 | uint32_t *left = raster + (size_t)line * w; |
879 | | /* Use wmin to only flip horizontally data in place and not complete |
880 | | * raster-row. */ |
881 | 0 | uint32_t *right = left + wmin - 1; |
882 | |
|
883 | 0 | while (left < right) |
884 | 0 | { |
885 | 0 | uint32_t temp = *left; |
886 | 0 | *left = *right; |
887 | 0 | *right = temp; |
888 | 0 | left++; |
889 | 0 | right--; |
890 | 0 | } |
891 | 0 | } |
892 | 0 | } |
893 | |
|
894 | 0 | return (ret); |
895 | 0 | } |
896 | | |
897 | | /* |
898 | | * Get an tile-organized image that has |
899 | | * SamplesPerPixel > 1 |
900 | | * PlanarConfiguration separated |
901 | | * We assume that all such images are RGB. |
902 | | */ |
903 | | static int gtTileSeparate(TIFFRGBAImage *img, uint32_t *raster, uint32_t w, |
904 | | uint32_t h) |
905 | 0 | { |
906 | 0 | TIFF *tif = img->tif; |
907 | 0 | tileSeparateRoutine put = img->put.separate; |
908 | 0 | uint32_t col, row, y, rowstoread; |
909 | 0 | tmsize_t pos; |
910 | 0 | uint32_t tw, th; |
911 | 0 | unsigned char *buf = NULL; |
912 | 0 | unsigned char *p0 = NULL; |
913 | 0 | unsigned char *p1 = NULL; |
914 | 0 | unsigned char *p2 = NULL; |
915 | 0 | unsigned char *pa = NULL; |
916 | 0 | tmsize_t tilesize; |
917 | 0 | tmsize_t bufsize; |
918 | 0 | int32_t fromskew, toskew; |
919 | 0 | int alpha = img->alpha; |
920 | 0 | uint32_t nrow; |
921 | 0 | int ret = 1, flip; |
922 | 0 | uint16_t colorchannels; |
923 | 0 | uint32_t this_tw, tocol; |
924 | 0 | int32_t this_toskew, leftmost_toskew; |
925 | 0 | int32_t leftmost_fromskew; |
926 | 0 | uint32_t leftmost_tw; |
927 | | |
928 | | /* If the raster is smaller than the image, |
929 | | * or if there is a col_offset, adapt the samples to be copied per row. */ |
930 | 0 | uint32_t wmin; |
931 | 0 | if (0 <= img->col_offset && (uint32_t)img->col_offset < img->width) |
932 | 0 | { |
933 | 0 | wmin = TIFFmin(w, img->width - (uint32_t)img->col_offset); |
934 | 0 | } |
935 | 0 | else |
936 | 0 | { |
937 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
938 | 0 | "Error in gtTileSeparate: column offset %d exceeds " |
939 | 0 | "image width %u", |
940 | 0 | img->col_offset, img->width); |
941 | 0 | return 0; |
942 | 0 | } |
943 | | |
944 | 0 | tilesize = TIFFTileSize(tif); |
945 | 0 | bufsize = |
946 | 0 | _TIFFMultiplySSize(tif, alpha ? 4 : 3, tilesize, "gtTileSeparate"); |
947 | 0 | if (bufsize == 0) |
948 | 0 | { |
949 | 0 | return (0); |
950 | 0 | } |
951 | | |
952 | 0 | TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tw); |
953 | 0 | TIFFGetField(tif, TIFFTAG_TILELENGTH, &th); |
954 | |
|
955 | 0 | flip = setorientation(img); |
956 | 0 | if (flip & FLIP_VERTICALLY) |
957 | 0 | { |
958 | 0 | if (((int64_t)tw + w) > INT_MAX) |
959 | 0 | { |
960 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", |
961 | 0 | "unsupported tile size (too wide)"); |
962 | 0 | return (0); |
963 | 0 | } |
964 | 0 | y = h - 1; |
965 | 0 | toskew = -(int32_t)(tw + w); |
966 | 0 | } |
967 | 0 | else |
968 | 0 | { |
969 | 0 | if (tw > ((int64_t)INT_MAX + w) || w > ((int64_t)INT_MAX + tw)) |
970 | 0 | { |
971 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", |
972 | 0 | "unsupported tile size (too wide)"); |
973 | 0 | return (0); |
974 | 0 | } |
975 | 0 | y = 0; |
976 | 0 | toskew = -(int32_t)(tw - w); |
977 | 0 | } |
978 | | |
979 | 0 | switch (img->photometric) |
980 | 0 | { |
981 | 0 | case PHOTOMETRIC_MINISWHITE: |
982 | 0 | case PHOTOMETRIC_MINISBLACK: |
983 | 0 | case PHOTOMETRIC_PALETTE: |
984 | 0 | colorchannels = 1; |
985 | 0 | break; |
986 | | |
987 | 0 | default: |
988 | 0 | colorchannels = 3; |
989 | 0 | break; |
990 | 0 | } |
991 | | |
992 | 0 | if (tw == 0 || th == 0) |
993 | 0 | { |
994 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "tile width or height is zero"); |
995 | 0 | return (0); |
996 | 0 | } |
997 | | |
998 | | /* |
999 | | * Leftmost tile is clipped on left side if col_offset > 0. |
1000 | | */ |
1001 | 0 | leftmost_fromskew = (int32_t)((uint32_t)img->col_offset % tw); |
1002 | 0 | leftmost_tw = (uint32_t)((int32_t)tw - leftmost_fromskew); |
1003 | 0 | int64_t skew_i64 = (int64_t)toskew + (int64_t)(int32_t)leftmost_fromskew; |
1004 | 0 | if (skew_i64 > INT_MAX || skew_i64 < INT_MIN) |
1005 | 0 | { |
1006 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s %" PRId64, "Invalid skew", |
1007 | 0 | skew_i64); |
1008 | 0 | return (0); |
1009 | 0 | } |
1010 | 0 | leftmost_toskew = (int32_t)skew_i64; |
1011 | 0 | for (row = 0; ret != 0 && row < h; row += nrow) |
1012 | 0 | { |
1013 | 0 | rowstoread = th - ((uint32_t)row + (uint32_t)img->row_offset) % th; |
1014 | 0 | nrow = (row + rowstoread > h ? h - row : rowstoread); |
1015 | 0 | fromskew = leftmost_fromskew; |
1016 | 0 | this_tw = leftmost_tw; |
1017 | 0 | this_toskew = leftmost_toskew; |
1018 | 0 | tocol = 0; |
1019 | 0 | col = (uint32_t)img->col_offset; |
1020 | | /* wmin: only write imagewidth if raster is bigger. */ |
1021 | 0 | while (tocol < wmin) |
1022 | 0 | { |
1023 | 0 | if (buf == NULL) |
1024 | 0 | { |
1025 | 0 | if (_TIFFReadTileAndAllocBuffer( |
1026 | 0 | tif, (void **)&buf, bufsize, col, |
1027 | 0 | (uint32_t)((int32_t)row + img->row_offset), 0, |
1028 | 0 | 0) == (tmsize_t)(-1) && |
1029 | 0 | (buf == NULL || img->stoponerr)) |
1030 | 0 | { |
1031 | 0 | ret = 0; |
1032 | 0 | break; |
1033 | 0 | } |
1034 | 0 | p0 = buf; |
1035 | 0 | if (colorchannels == 1) |
1036 | 0 | { |
1037 | 0 | p2 = p1 = p0; |
1038 | 0 | pa = (alpha ? (p0 + 3 * tilesize) : NULL); |
1039 | 0 | } |
1040 | 0 | else |
1041 | 0 | { |
1042 | 0 | p1 = p0 + tilesize; |
1043 | 0 | p2 = p1 + tilesize; |
1044 | 0 | pa = (alpha ? (p2 + tilesize) : NULL); |
1045 | 0 | } |
1046 | 0 | } |
1047 | 0 | else if (TIFFReadTile(tif, p0, col, |
1048 | 0 | (uint32_t)((int32_t)row + img->row_offset), 0, |
1049 | 0 | 0) == (tmsize_t)(-1) && |
1050 | 0 | img->stoponerr) |
1051 | 0 | { |
1052 | 0 | ret = 0; |
1053 | 0 | break; |
1054 | 0 | } |
1055 | 0 | if (colorchannels > 1 && |
1056 | 0 | TIFFReadTile(tif, p1, col, |
1057 | 0 | (uint32_t)((int32_t)row + img->row_offset), 0, |
1058 | 0 | (uint16_t)1) == (tmsize_t)(-1) && |
1059 | 0 | img->stoponerr) |
1060 | 0 | { |
1061 | 0 | ret = 0; |
1062 | 0 | break; |
1063 | 0 | } |
1064 | 0 | if (colorchannels > 1 && |
1065 | 0 | TIFFReadTile(tif, p2, col, |
1066 | 0 | (uint32_t)((int32_t)row + img->row_offset), 0, |
1067 | 0 | (uint16_t)2) == (tmsize_t)(-1) && |
1068 | 0 | img->stoponerr) |
1069 | 0 | { |
1070 | 0 | ret = 0; |
1071 | 0 | break; |
1072 | 0 | } |
1073 | 0 | if (alpha && |
1074 | 0 | TIFFReadTile(tif, pa, col, |
1075 | 0 | (uint32_t)((int32_t)row + img->row_offset), 0, |
1076 | 0 | (uint16_t)colorchannels) == (tmsize_t)(-1) && |
1077 | 0 | img->stoponerr) |
1078 | 0 | { |
1079 | 0 | ret = 0; |
1080 | 0 | break; |
1081 | 0 | } |
1082 | | |
1083 | | /* For SEPARATE the pos-offset is per sample and should not be |
1084 | | * multiplied by img->samplesperpixel. */ |
1085 | 0 | pos = (tmsize_t)((uint32_t)((int32_t)row + img->row_offset) % th) * |
1086 | 0 | TIFFTileRowSize(tif) + |
1087 | 0 | (tmsize_t)fromskew; |
1088 | 0 | if (tocol + this_tw > wmin) |
1089 | 0 | { |
1090 | | /* |
1091 | | * Rightmost tile is clipped on right side. |
1092 | | */ |
1093 | 0 | fromskew = (int32_t)(tw - (wmin - tocol)); |
1094 | 0 | this_tw = (uint32_t)((int32_t)tw - fromskew); |
1095 | 0 | this_toskew = (int32_t)(toskew + (int32_t)(uint32_t)fromskew); |
1096 | 0 | } |
1097 | 0 | tmsize_t roffset = (tmsize_t)y * w + tocol; |
1098 | 0 | (*put)(img, raster + roffset, tocol, y, this_tw, nrow, fromskew, |
1099 | 0 | this_toskew, p0 + pos, p1 + pos, p2 + pos, |
1100 | 0 | (alpha ? (pa + pos) : NULL)); |
1101 | 0 | tocol += this_tw; |
1102 | 0 | col += this_tw; |
1103 | | /* |
1104 | | * After the leftmost tile, tiles are no longer clipped on left |
1105 | | * side. |
1106 | | */ |
1107 | 0 | fromskew = 0; |
1108 | 0 | this_tw = tw; |
1109 | 0 | this_toskew = toskew; |
1110 | 0 | } |
1111 | |
|
1112 | 0 | y += (uint32_t)((flip & FLIP_VERTICALLY) ? -(int32_t)nrow |
1113 | 0 | : (int32_t)nrow); |
1114 | 0 | } |
1115 | |
|
1116 | 0 | if (flip & FLIP_HORIZONTALLY) |
1117 | 0 | { |
1118 | 0 | uint32_t line; |
1119 | |
|
1120 | 0 | for (line = 0; line < h; line++) |
1121 | 0 | { |
1122 | 0 | uint32_t *left = raster + (size_t)line * w; |
1123 | | /* Use wmin to only flip horizontally data in place and not complete |
1124 | | * raster-row. */ |
1125 | 0 | uint32_t *right = left + wmin - 1; |
1126 | |
|
1127 | 0 | while (left < right) |
1128 | 0 | { |
1129 | 0 | uint32_t temp = *left; |
1130 | 0 | *left = *right; |
1131 | 0 | *right = temp; |
1132 | 0 | left++; |
1133 | 0 | right--; |
1134 | 0 | } |
1135 | 0 | } |
1136 | 0 | } |
1137 | |
|
1138 | 0 | _TIFFfreeExt(img->tif, buf); |
1139 | 0 | return (ret); |
1140 | 0 | } |
1141 | | |
1142 | | /* |
1143 | | * Get a strip-organized image that has |
1144 | | * PlanarConfiguration contiguous if SamplesPerPixel > 1 |
1145 | | * or |
1146 | | * SamplesPerPixel == 1 |
1147 | | */ |
1148 | | static int gtStripContig(TIFFRGBAImage *img, uint32_t *raster, uint32_t w, |
1149 | | uint32_t h) |
1150 | 0 | { |
1151 | 0 | TIFF *tif = img->tif; |
1152 | 0 | tileContigRoutine put = img->put.contig; |
1153 | 0 | uint32_t row, y, nrow, nrowsub, rowstoread; |
1154 | 0 | tmsize_t pos; |
1155 | 0 | unsigned char *buf = NULL; |
1156 | 0 | uint32_t rowsperstrip; |
1157 | 0 | uint16_t subsamplinghor, subsamplingver; |
1158 | 0 | uint32_t imagewidth = img->width; |
1159 | 0 | tmsize_t scanline; |
1160 | | /* fromskew, toskew are the increments within the input image or the raster |
1161 | | * from the end of a line to the start of the next line to read or write. */ |
1162 | 0 | int32_t fromskew, toskew; |
1163 | 0 | int ret = 1, flip; |
1164 | 0 | tmsize_t maxstripsize; |
1165 | | |
1166 | | /* If the raster is smaller than the image, |
1167 | | * or if there is a col_offset, adapt the samples to be copied per row. */ |
1168 | 0 | uint32_t wmin; |
1169 | 0 | if (0 <= img->col_offset && (uint32_t)img->col_offset < imagewidth) |
1170 | 0 | { |
1171 | 0 | wmin = TIFFmin(w, imagewidth - (uint32_t)img->col_offset); |
1172 | 0 | } |
1173 | 0 | else |
1174 | 0 | { |
1175 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
1176 | 0 | "Error in gtStripContig: column offset %d exceeds " |
1177 | 0 | "image width %u", |
1178 | 0 | img->col_offset, imagewidth); |
1179 | 0 | return 0; |
1180 | 0 | } |
1181 | | |
1182 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_YCBCRSUBSAMPLING, &subsamplinghor, |
1183 | 0 | &subsamplingver); |
1184 | 0 | if (subsamplingver == 0) |
1185 | 0 | { |
1186 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
1187 | 0 | "Invalid vertical YCbCr subsampling"); |
1188 | 0 | return (0); |
1189 | 0 | } |
1190 | | |
1191 | 0 | maxstripsize = TIFFStripSize(tif); |
1192 | |
|
1193 | 0 | flip = setorientation(img); |
1194 | 0 | if (flip & FLIP_VERTICALLY) |
1195 | 0 | { |
1196 | 0 | if (w > INT_MAX / 2) |
1197 | 0 | { |
1198 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "Width overflow"); |
1199 | 0 | return (0); |
1200 | 0 | } |
1201 | 0 | y = h - 1; |
1202 | | /* Skew back to the raster row before the currently written row |
1203 | | * -> one raster width plus copied image pixels. */ |
1204 | 0 | toskew = -(int32_t)(w + wmin); |
1205 | 0 | } |
1206 | 0 | else |
1207 | 0 | { |
1208 | 0 | y = 0; |
1209 | | /* Skew forward to the end of the raster width of the row currently |
1210 | | * copied. */ |
1211 | 0 | toskew = (int32_t)(w - wmin); |
1212 | 0 | } |
1213 | | |
1214 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); |
1215 | 0 | if (rowsperstrip == 0) |
1216 | 0 | { |
1217 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "rowsperstrip is zero"); |
1218 | 0 | return (0); |
1219 | 0 | } |
1220 | | |
1221 | 0 | scanline = TIFFScanlineSize(tif); |
1222 | 0 | fromskew = (int32_t)(w < imagewidth ? imagewidth - w : 0); |
1223 | 0 | for (row = 0; row < h; row += nrow) |
1224 | 0 | { |
1225 | 0 | uint32_t temp; |
1226 | 0 | rowstoread = rowsperstrip - |
1227 | 0 | (uint32_t)((int32_t)row + img->row_offset) % rowsperstrip; |
1228 | 0 | nrow = (row + rowstoread > h ? h - row : rowstoread); |
1229 | 0 | nrowsub = nrow; |
1230 | 0 | if ((nrowsub % subsamplingver) != 0) |
1231 | 0 | nrowsub += subsamplingver - nrowsub % subsamplingver; |
1232 | 0 | temp = |
1233 | 0 | (uint32_t)((int32_t)row + img->row_offset) % rowsperstrip + nrowsub; |
1234 | 0 | if (scanline > 0 && temp > (size_t)(TIFF_TMSIZE_T_MAX / scanline)) |
1235 | 0 | { |
1236 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
1237 | 0 | "Integer overflow in gtStripContig"); |
1238 | 0 | return 0; |
1239 | 0 | } |
1240 | 0 | if (_TIFFReadEncodedStripAndAllocBuffer( |
1241 | 0 | tif, |
1242 | 0 | TIFFComputeStrip(tif, |
1243 | 0 | (uint32_t)((int32_t)row + img->row_offset), 0), |
1244 | 0 | (void **)(&buf), maxstripsize, |
1245 | 0 | (tmsize_t)((size_t)temp * (size_t)scanline)) == |
1246 | 0 | (tmsize_t)(-1) && |
1247 | 0 | (buf == NULL || img->stoponerr)) |
1248 | 0 | { |
1249 | 0 | ret = 0; |
1250 | 0 | break; |
1251 | 0 | } |
1252 | | |
1253 | 0 | pos = (tmsize_t)((uint32_t)((int32_t)row + img->row_offset) % |
1254 | 0 | rowsperstrip) * |
1255 | 0 | scanline + |
1256 | 0 | ((tmsize_t)img->col_offset * img->samplesperpixel); |
1257 | 0 | tmsize_t roffset = (tmsize_t)y * w; |
1258 | 0 | (*put)(img, raster + roffset, 0, y, wmin, nrow, fromskew, toskew, |
1259 | 0 | buf + pos); |
1260 | 0 | y += (uint32_t)((flip & FLIP_VERTICALLY) ? -(int32_t)nrow |
1261 | 0 | : (int32_t)nrow); |
1262 | 0 | } |
1263 | | |
1264 | 0 | if (flip & FLIP_HORIZONTALLY) |
1265 | 0 | { |
1266 | | /* Flips the complete raster matrix horizontally. If raster width is |
1267 | | * larger than image width, data are moved horizontally to the right |
1268 | | * side. |
1269 | | * Use wmin to only flip data in place. */ |
1270 | 0 | uint32_t line; |
1271 | |
|
1272 | 0 | for (line = 0; line < h; line++) |
1273 | 0 | { |
1274 | 0 | uint32_t *left = raster + (size_t)line * w; |
1275 | | /* Use wmin to only flip horizontally data in place and not complete |
1276 | | * raster-row. */ |
1277 | 0 | uint32_t *right = left + wmin - 1; |
1278 | |
|
1279 | 0 | while (left < right) |
1280 | 0 | { |
1281 | 0 | uint32_t temp = *left; |
1282 | 0 | *left = *right; |
1283 | 0 | *right = temp; |
1284 | 0 | left++; |
1285 | 0 | right--; |
1286 | 0 | } |
1287 | 0 | } |
1288 | 0 | } |
1289 | |
|
1290 | 0 | _TIFFfreeExt(img->tif, buf); |
1291 | 0 | return (ret); |
1292 | 0 | } |
1293 | | |
1294 | | /* |
1295 | | * Get a strip-organized image with |
1296 | | * SamplesPerPixel > 1 |
1297 | | * PlanarConfiguration separated |
1298 | | * We assume that all such images are RGB. |
1299 | | */ |
1300 | | static int gtStripSeparate(TIFFRGBAImage *img, uint32_t *raster, uint32_t w, |
1301 | | uint32_t h) |
1302 | 0 | { |
1303 | 0 | TIFF *tif = img->tif; |
1304 | 0 | tileSeparateRoutine put = img->put.separate; |
1305 | 0 | unsigned char *buf = NULL; |
1306 | 0 | unsigned char *p0 = NULL, *p1 = NULL, *p2 = NULL, *pa = NULL; |
1307 | 0 | uint32_t row, y, nrow, rowstoread; |
1308 | 0 | tmsize_t pos; |
1309 | 0 | tmsize_t scanline; |
1310 | 0 | uint32_t rowsperstrip, offset_row; |
1311 | 0 | uint32_t imagewidth = img->width; |
1312 | 0 | tmsize_t stripsize; |
1313 | 0 | tmsize_t bufsize; |
1314 | 0 | int32_t fromskew, toskew; |
1315 | 0 | int alpha = img->alpha; |
1316 | 0 | int ret = 1, flip; |
1317 | 0 | uint16_t colorchannels; |
1318 | | |
1319 | | /* If the raster is smaller than the image, |
1320 | | * or if there is a col_offset, adapt the samples to be copied per row. */ |
1321 | 0 | uint32_t wmin; |
1322 | 0 | if (0 <= img->col_offset && (uint32_t)img->col_offset < imagewidth) |
1323 | 0 | { |
1324 | 0 | wmin = TIFFmin(w, imagewidth - (uint32_t)img->col_offset); |
1325 | 0 | } |
1326 | 0 | else |
1327 | 0 | { |
1328 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
1329 | 0 | "Error in gtStripSeparate: column offset %d exceeds " |
1330 | 0 | "image width %u", |
1331 | 0 | img->col_offset, imagewidth); |
1332 | 0 | return 0; |
1333 | 0 | } |
1334 | | |
1335 | 0 | stripsize = TIFFStripSize(tif); |
1336 | 0 | bufsize = |
1337 | 0 | _TIFFMultiplySSize(tif, alpha ? 4 : 3, stripsize, "gtStripSeparate"); |
1338 | 0 | if (bufsize == 0) |
1339 | 0 | { |
1340 | 0 | return (0); |
1341 | 0 | } |
1342 | | |
1343 | 0 | flip = setorientation(img); |
1344 | 0 | if (flip & FLIP_VERTICALLY) |
1345 | 0 | { |
1346 | 0 | if (w > INT_MAX / 2) |
1347 | 0 | { |
1348 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "Width overflow"); |
1349 | 0 | return (0); |
1350 | 0 | } |
1351 | 0 | y = h - 1; |
1352 | | /* Skew back to the raster row before the currently written row |
1353 | | * -> one raster width plus one image width. */ |
1354 | 0 | toskew = -(int32_t)(w + wmin); |
1355 | 0 | } |
1356 | 0 | else |
1357 | 0 | { |
1358 | 0 | y = 0; |
1359 | | /* Skew forward to the end of the raster width of the row currently |
1360 | | * written. */ |
1361 | 0 | toskew = (int32_t)(w - wmin); |
1362 | 0 | } |
1363 | | |
1364 | 0 | switch (img->photometric) |
1365 | 0 | { |
1366 | 0 | case PHOTOMETRIC_MINISWHITE: |
1367 | 0 | case PHOTOMETRIC_MINISBLACK: |
1368 | 0 | case PHOTOMETRIC_PALETTE: |
1369 | 0 | colorchannels = 1; |
1370 | 0 | break; |
1371 | | |
1372 | 0 | default: |
1373 | 0 | colorchannels = 3; |
1374 | 0 | break; |
1375 | 0 | } |
1376 | | |
1377 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); |
1378 | 0 | if (rowsperstrip == 0) |
1379 | 0 | { |
1380 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "rowsperstrip is zero"); |
1381 | 0 | return (0); |
1382 | 0 | } |
1383 | | |
1384 | 0 | scanline = TIFFScanlineSize(tif); |
1385 | 0 | fromskew = (int32_t)(w < imagewidth ? imagewidth - w : 0); |
1386 | 0 | for (row = 0; row < h; row += nrow) |
1387 | 0 | { |
1388 | 0 | uint32_t temp; |
1389 | 0 | rowstoread = |
1390 | 0 | rowsperstrip - |
1391 | 0 | ((uint32_t)((int32_t)row + img->row_offset) % rowsperstrip); |
1392 | 0 | nrow = (row + rowstoread > h ? h - row : rowstoread); |
1393 | 0 | offset_row = (uint32_t)((int32_t)row + img->row_offset); |
1394 | 0 | temp = (uint32_t)((int32_t)row + img->row_offset) % rowsperstrip + nrow; |
1395 | 0 | if (scanline > 0 && temp > (size_t)(TIFF_TMSIZE_T_MAX / scanline)) |
1396 | 0 | { |
1397 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
1398 | 0 | "Integer overflow in gtStripSeparate"); |
1399 | 0 | return 0; |
1400 | 0 | } |
1401 | 0 | if (buf == NULL) |
1402 | 0 | { |
1403 | 0 | if (_TIFFReadEncodedStripAndAllocBuffer( |
1404 | 0 | tif, TIFFComputeStrip(tif, offset_row, 0), (void **)&buf, |
1405 | 0 | bufsize, temp * scanline) == (tmsize_t)(-1) && |
1406 | 0 | (buf == NULL || img->stoponerr)) |
1407 | 0 | { |
1408 | 0 | ret = 0; |
1409 | 0 | break; |
1410 | 0 | } |
1411 | 0 | p0 = buf; |
1412 | 0 | if (colorchannels == 1) |
1413 | 0 | { |
1414 | 0 | p2 = p1 = p0; |
1415 | 0 | pa = (alpha ? (p0 + 3 * stripsize) : NULL); |
1416 | 0 | } |
1417 | 0 | else |
1418 | 0 | { |
1419 | 0 | p1 = p0 + stripsize; |
1420 | 0 | p2 = p1 + stripsize; |
1421 | 0 | pa = (alpha ? (p2 + stripsize) : NULL); |
1422 | 0 | } |
1423 | 0 | } |
1424 | 0 | else if (TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 0), |
1425 | 0 | p0, temp * scanline) == (tmsize_t)(-1) && |
1426 | 0 | img->stoponerr) |
1427 | 0 | { |
1428 | 0 | ret = 0; |
1429 | 0 | break; |
1430 | 0 | } |
1431 | 0 | if (colorchannels > 1 && |
1432 | 0 | TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 1), p1, |
1433 | 0 | temp * scanline) == (tmsize_t)(-1) && |
1434 | 0 | img->stoponerr) |
1435 | 0 | { |
1436 | 0 | ret = 0; |
1437 | 0 | break; |
1438 | 0 | } |
1439 | 0 | if (colorchannels > 1 && |
1440 | 0 | TIFFReadEncodedStrip(tif, TIFFComputeStrip(tif, offset_row, 2), p2, |
1441 | 0 | temp * scanline) == (tmsize_t)(-1) && |
1442 | 0 | img->stoponerr) |
1443 | 0 | { |
1444 | 0 | ret = 0; |
1445 | 0 | break; |
1446 | 0 | } |
1447 | 0 | if (alpha) |
1448 | 0 | { |
1449 | 0 | if (TIFFReadEncodedStrip( |
1450 | 0 | tif, TIFFComputeStrip(tif, offset_row, colorchannels), pa, |
1451 | 0 | temp * scanline) == (tmsize_t)(-1) && |
1452 | 0 | img->stoponerr) |
1453 | 0 | { |
1454 | 0 | ret = 0; |
1455 | 0 | break; |
1456 | 0 | } |
1457 | 0 | } |
1458 | | |
1459 | | /* For SEPARATE the pos-offset is per sample and should not be |
1460 | | * multiplied by img->samplesperpixel. */ |
1461 | 0 | pos = (tmsize_t)((uint32_t)((int32_t)row + img->row_offset) % |
1462 | 0 | rowsperstrip) * |
1463 | 0 | scanline + |
1464 | 0 | (tmsize_t)img->col_offset; |
1465 | 0 | tmsize_t roffset = (tmsize_t)y * w; |
1466 | 0 | (*put)(img, raster + roffset, 0, y, wmin, nrow, fromskew, toskew, |
1467 | 0 | p0 + pos, p1 + pos, p2 + pos, (alpha ? (pa + pos) : NULL)); |
1468 | 0 | y += (uint32_t)((flip & FLIP_VERTICALLY) ? -(int32_t)nrow |
1469 | 0 | : (int32_t)nrow); |
1470 | 0 | } |
1471 | | |
1472 | 0 | if (flip & FLIP_HORIZONTALLY) |
1473 | 0 | { |
1474 | 0 | uint32_t line; |
1475 | |
|
1476 | 0 | for (line = 0; line < h; line++) |
1477 | 0 | { |
1478 | 0 | uint32_t *left = raster + (size_t)line * w; |
1479 | | /* Use wmin to only flip horizontally data in place and not complete |
1480 | | * raster-row. */ |
1481 | 0 | uint32_t *right = left + wmin - 1; |
1482 | |
|
1483 | 0 | while (left < right) |
1484 | 0 | { |
1485 | 0 | uint32_t temp = *left; |
1486 | 0 | *left = *right; |
1487 | 0 | *right = temp; |
1488 | 0 | left++; |
1489 | 0 | right--; |
1490 | 0 | } |
1491 | 0 | } |
1492 | 0 | } |
1493 | |
|
1494 | 0 | _TIFFfreeExt(img->tif, buf); |
1495 | 0 | return (ret); |
1496 | 0 | } |
1497 | | |
1498 | | /* |
1499 | | * The following routines move decoded data returned |
1500 | | * from the TIFF library into rasters filled with packed |
1501 | | * ABGR pixels (i.e. suitable for passing to lrecwrite.) |
1502 | | * |
1503 | | * The routines have been created according to the most |
1504 | | * important cases and optimized. PickContigCase and |
1505 | | * PickSeparateCase analyze the parameters and select |
1506 | | * the appropriate "get" and "put" routine to use. |
1507 | | */ |
1508 | | #define REPEAT8(op) \ |
1509 | 0 | REPEAT4(op); \ |
1510 | 0 | REPEAT4(op) |
1511 | | #define REPEAT4(op) \ |
1512 | 0 | REPEAT2(op); \ |
1513 | 0 | REPEAT2(op) |
1514 | | #define REPEAT2(op) \ |
1515 | 0 | op; \ |
1516 | 0 | op |
1517 | | #define CASE8(x, op) \ |
1518 | 0 | switch (x) \ |
1519 | 0 | { \ |
1520 | 0 | case 7: \ |
1521 | 0 | op; /*-fallthrough*/ \ |
1522 | 0 | case 6: \ |
1523 | 0 | op; /*-fallthrough*/ \ |
1524 | 0 | case 5: \ |
1525 | 0 | op; /*-fallthrough*/ \ |
1526 | 0 | case 4: \ |
1527 | 0 | op; /*-fallthrough*/ \ |
1528 | 0 | case 3: \ |
1529 | 0 | op; /*-fallthrough*/ \ |
1530 | 0 | case 2: \ |
1531 | 0 | op; /*-fallthrough*/ \ |
1532 | 0 | case 1: \ |
1533 | 0 | op; \ |
1534 | 0 | break; \ |
1535 | 0 | default: \ |
1536 | 0 | break; \ |
1537 | 0 | } |
1538 | | #define CASE4(x, op) \ |
1539 | 0 | switch (x) \ |
1540 | 0 | { \ |
1541 | 0 | case 3: \ |
1542 | 0 | op; /*-fallthrough*/ \ |
1543 | 0 | case 2: \ |
1544 | 0 | op; /*-fallthrough*/ \ |
1545 | 0 | case 1: \ |
1546 | 0 | op; \ |
1547 | 0 | break; \ |
1548 | 0 | default: \ |
1549 | 0 | break; \ |
1550 | 0 | } |
1551 | | #define NOP |
1552 | | |
1553 | | #define UNROLL8(w, op1, op2) \ |
1554 | 0 | { \ |
1555 | 0 | uint32_t _x; \ |
1556 | 0 | for (_x = w; _x >= 8; _x -= 8) \ |
1557 | 0 | { \ |
1558 | 0 | op1; \ |
1559 | 0 | REPEAT8(op2); \ |
1560 | 0 | } \ |
1561 | 0 | if (_x > 0) \ |
1562 | 0 | { \ |
1563 | 0 | op1; \ |
1564 | 0 | CASE8(_x, op2); \ |
1565 | 0 | } \ |
1566 | 0 | } |
1567 | | #define UNROLL4(w, op1, op2) \ |
1568 | 0 | { \ |
1569 | 0 | uint32_t _x; \ |
1570 | 0 | for (_x = w; _x >= 4; _x -= 4) \ |
1571 | 0 | { \ |
1572 | 0 | op1; \ |
1573 | 0 | REPEAT4(op2); \ |
1574 | 0 | } \ |
1575 | 0 | if (_x > 0) \ |
1576 | 0 | { \ |
1577 | 0 | op1; \ |
1578 | 0 | CASE4(_x, op2); \ |
1579 | 0 | } \ |
1580 | 0 | } |
1581 | | #define UNROLL2(w, op1, op2) \ |
1582 | 0 | { \ |
1583 | 0 | uint32_t _x; \ |
1584 | 0 | for (_x = w; _x >= 2; _x -= 2) \ |
1585 | 0 | { \ |
1586 | 0 | op1; \ |
1587 | 0 | REPEAT2(op2); \ |
1588 | 0 | } \ |
1589 | 0 | if (_x) \ |
1590 | 0 | { \ |
1591 | 0 | op1; \ |
1592 | 0 | op2; \ |
1593 | 0 | } \ |
1594 | 0 | } |
1595 | | |
1596 | | #define SKEW(r, g, b, skew) \ |
1597 | 0 | { \ |
1598 | 0 | r += skew; \ |
1599 | 0 | g += skew; \ |
1600 | 0 | b += skew; \ |
1601 | 0 | } |
1602 | | #define SKEW4(r, g, b, a, skew) \ |
1603 | 0 | { \ |
1604 | 0 | r += skew; \ |
1605 | 0 | g += skew; \ |
1606 | 0 | b += skew; \ |
1607 | 0 | a += skew; \ |
1608 | 0 | } |
1609 | | |
1610 | 0 | #define A1 (((uint32_t)0xffL) << 24) |
1611 | | #define PACK(r, g, b) \ |
1612 | 0 | ((uint32_t)(r) | ((uint32_t)(g) << 8) | ((uint32_t)(b) << 16) | A1) |
1613 | | #define PACK4(r, g, b, a) \ |
1614 | 0 | ((uint32_t)(r) | ((uint32_t)(g) << 8) | ((uint32_t)(b) << 16) | \ |
1615 | 0 | ((uint32_t)(a) << 24)) |
1616 | | |
1617 | | #define DECLAREContigPutFunc(name) \ |
1618 | | static void name(TIFFRGBAImage *img, uint32_t *cp, uint32_t x, uint32_t y, \ |
1619 | | uint32_t w, uint32_t h, int32_t fromskew, int32_t toskew, \ |
1620 | | unsigned char *pp) |
1621 | | |
1622 | | /* |
1623 | | * 8-bit palette => colormap/RGB |
1624 | | */ |
1625 | | DECLAREContigPutFunc(put8bitcmaptile) |
1626 | 0 | { |
1627 | 0 | uint32_t **PALmap = img->PALmap; |
1628 | 0 | int samplesperpixel = img->samplesperpixel; |
1629 | |
|
1630 | 0 | (void)y; |
1631 | 0 | for (; h > 0; --h) |
1632 | 0 | { |
1633 | 0 | for (x = w; x > 0; --x) |
1634 | 0 | { |
1635 | 0 | *cp++ = PALmap[*pp][0]; |
1636 | 0 | pp += samplesperpixel; |
1637 | 0 | } |
1638 | 0 | cp += toskew; |
1639 | 0 | pp += fromskew; |
1640 | 0 | } |
1641 | 0 | } |
1642 | | |
1643 | | /* |
1644 | | * 4-bit palette => colormap/RGB |
1645 | | */ |
1646 | | DECLAREContigPutFunc(put4bitcmaptile) |
1647 | 0 | { |
1648 | 0 | uint32_t **PALmap = img->PALmap; |
1649 | |
|
1650 | 0 | (void)x; |
1651 | 0 | (void)y; |
1652 | 0 | fromskew /= 2; |
1653 | 0 | for (; h > 0; --h) |
1654 | 0 | { |
1655 | 0 | uint32_t *bw; |
1656 | 0 | UNROLL2(w, bw = PALmap[*pp++], *cp++ = *bw++); |
1657 | 0 | cp += toskew; |
1658 | 0 | pp += fromskew; |
1659 | 0 | } |
1660 | 0 | } |
1661 | | |
1662 | | /* |
1663 | | * 2-bit palette => colormap/RGB |
1664 | | */ |
1665 | | DECLAREContigPutFunc(put2bitcmaptile) |
1666 | 0 | { |
1667 | 0 | uint32_t **PALmap = img->PALmap; |
1668 | |
|
1669 | 0 | (void)x; |
1670 | 0 | (void)y; |
1671 | 0 | fromskew /= 4; |
1672 | 0 | for (; h > 0; --h) |
1673 | 0 | { |
1674 | 0 | uint32_t *bw; |
1675 | 0 | UNROLL4(w, bw = PALmap[*pp++], *cp++ = *bw++); |
1676 | 0 | cp += toskew; |
1677 | 0 | pp += fromskew; |
1678 | 0 | } |
1679 | 0 | } |
1680 | | |
1681 | | /* |
1682 | | * 1-bit palette => colormap/RGB |
1683 | | */ |
1684 | | DECLAREContigPutFunc(put1bitcmaptile) |
1685 | 0 | { |
1686 | 0 | uint32_t **PALmap = img->PALmap; |
1687 | |
|
1688 | 0 | (void)x; |
1689 | 0 | (void)y; |
1690 | 0 | fromskew /= 8; |
1691 | 0 | for (; h > 0; --h) |
1692 | 0 | { |
1693 | 0 | uint32_t *bw; |
1694 | 0 | UNROLL8(w, bw = PALmap[*pp++], *cp++ = *bw++); |
1695 | 0 | cp += toskew; |
1696 | 0 | pp += fromskew; |
1697 | 0 | } |
1698 | 0 | } |
1699 | | |
1700 | | /* |
1701 | | * 8-bit greyscale => colormap/RGB |
1702 | | */ |
1703 | | DECLAREContigPutFunc(putgreytile) |
1704 | 0 | { |
1705 | 0 | int samplesperpixel = img->samplesperpixel; |
1706 | 0 | uint32_t **BWmap = img->BWmap; |
1707 | |
|
1708 | 0 | (void)y; |
1709 | 0 | for (; h > 0; --h) |
1710 | 0 | { |
1711 | 0 | for (x = w; x > 0; --x) |
1712 | 0 | { |
1713 | 0 | *cp++ = BWmap[*pp][0]; |
1714 | 0 | pp += samplesperpixel; |
1715 | 0 | } |
1716 | 0 | cp += toskew; |
1717 | 0 | pp += fromskew; |
1718 | 0 | } |
1719 | 0 | } |
1720 | | |
1721 | | /* |
1722 | | * 8-bit greyscale with associated alpha => colormap/RGBA |
1723 | | */ |
1724 | | DECLAREContigPutFunc(putagreytile) |
1725 | 0 | { |
1726 | 0 | int samplesperpixel = img->samplesperpixel; |
1727 | 0 | uint32_t **BWmap = img->BWmap; |
1728 | |
|
1729 | 0 | (void)y; |
1730 | 0 | for (; h > 0; --h) |
1731 | 0 | { |
1732 | 0 | for (x = w; x > 0; --x) |
1733 | 0 | { |
1734 | 0 | *cp++ = BWmap[*pp][0] & ((uint32_t)*(pp + 1) << 24 | ~A1); |
1735 | 0 | pp += samplesperpixel; |
1736 | 0 | } |
1737 | 0 | cp += toskew; |
1738 | 0 | pp += fromskew; |
1739 | 0 | } |
1740 | 0 | } |
1741 | | |
1742 | | /* |
1743 | | * 16-bit greyscale => colormap/RGB |
1744 | | */ |
1745 | | DECLAREContigPutFunc(put16bitbwtile) |
1746 | 0 | { |
1747 | 0 | int samplesperpixel = img->samplesperpixel; |
1748 | 0 | uint32_t **BWmap = img->BWmap; |
1749 | | /* Convert pixel skew to byte skew (16-bit samples) */ |
1750 | 0 | const tmsize_t fromskewLocal = |
1751 | 0 | (tmsize_t)fromskew * (tmsize_t)(2 * samplesperpixel); |
1752 | |
|
1753 | 0 | (void)y; |
1754 | 0 | for (; h > 0; --h) |
1755 | 0 | { |
1756 | 0 | uint16_t *wp = (uint16_t *)pp; |
1757 | |
|
1758 | 0 | for (x = w; x > 0; --x) |
1759 | 0 | { |
1760 | | /* use high order byte of 16bit value */ |
1761 | |
|
1762 | 0 | *cp++ = BWmap[*wp >> 8][0]; |
1763 | 0 | pp += 2 * samplesperpixel; |
1764 | 0 | wp += samplesperpixel; |
1765 | 0 | } |
1766 | 0 | cp += toskew; |
1767 | 0 | pp += fromskewLocal; |
1768 | 0 | } |
1769 | 0 | } |
1770 | | |
1771 | | /* |
1772 | | * 1-bit bilevel => colormap/RGB |
1773 | | */ |
1774 | | DECLAREContigPutFunc(put1bitbwtile) |
1775 | 0 | { |
1776 | 0 | uint32_t **BWmap = img->BWmap; |
1777 | |
|
1778 | 0 | (void)x; |
1779 | 0 | (void)y; |
1780 | 0 | fromskew /= 8; |
1781 | 0 | for (; h > 0; --h) |
1782 | 0 | { |
1783 | 0 | uint32_t *bw; |
1784 | 0 | UNROLL8(w, bw = BWmap[*pp++], *cp++ = *bw++); |
1785 | 0 | cp += toskew; |
1786 | 0 | pp += fromskew; |
1787 | 0 | } |
1788 | 0 | } |
1789 | | |
1790 | | /* |
1791 | | * 2-bit greyscale => colormap/RGB |
1792 | | */ |
1793 | | DECLAREContigPutFunc(put2bitbwtile) |
1794 | 0 | { |
1795 | 0 | uint32_t **BWmap = img->BWmap; |
1796 | |
|
1797 | 0 | (void)x; |
1798 | 0 | (void)y; |
1799 | 0 | fromskew /= 4; |
1800 | 0 | for (; h > 0; --h) |
1801 | 0 | { |
1802 | 0 | uint32_t *bw; |
1803 | 0 | UNROLL4(w, bw = BWmap[*pp++], *cp++ = *bw++); |
1804 | 0 | cp += toskew; |
1805 | 0 | pp += fromskew; |
1806 | 0 | } |
1807 | 0 | } |
1808 | | |
1809 | | /* |
1810 | | * 4-bit greyscale => colormap/RGB |
1811 | | */ |
1812 | | DECLAREContigPutFunc(put4bitbwtile) |
1813 | 0 | { |
1814 | 0 | uint32_t **BWmap = img->BWmap; |
1815 | |
|
1816 | 0 | (void)x; |
1817 | 0 | (void)y; |
1818 | 0 | fromskew /= 2; |
1819 | 0 | for (; h > 0; --h) |
1820 | 0 | { |
1821 | 0 | uint32_t *bw; |
1822 | 0 | UNROLL2(w, bw = BWmap[*pp++], *cp++ = *bw++); |
1823 | 0 | cp += toskew; |
1824 | 0 | pp += fromskew; |
1825 | 0 | } |
1826 | 0 | } |
1827 | | |
1828 | | /* |
1829 | | * 8-bit packed samples, no Map => RGB |
1830 | | */ |
1831 | | DECLAREContigPutFunc(putRGBcontig8bittile) |
1832 | 0 | { |
1833 | 0 | int samplesperpixel = img->samplesperpixel; |
1834 | |
|
1835 | 0 | (void)x; |
1836 | 0 | (void)y; |
1837 | 0 | const tmsize_t fromskewLocal = |
1838 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1839 | 0 | for (; h > 0; --h) |
1840 | 0 | { |
1841 | 0 | UNROLL8(w, NOP, *cp++ = PACK(pp[0], pp[1], pp[2]); |
1842 | 0 | pp += samplesperpixel); |
1843 | 0 | cp += toskew; |
1844 | 0 | pp += fromskewLocal; |
1845 | 0 | } |
1846 | 0 | } |
1847 | | |
1848 | | /* |
1849 | | * 8-bit packed samples => RGBA w/ associated alpha |
1850 | | * (known to have Map == NULL) |
1851 | | */ |
1852 | | DECLAREContigPutFunc(putRGBAAcontig8bittile) |
1853 | 0 | { |
1854 | 0 | int samplesperpixel = img->samplesperpixel; |
1855 | |
|
1856 | 0 | (void)x; |
1857 | 0 | (void)y; |
1858 | 0 | const tmsize_t fromskewLocal = |
1859 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1860 | 0 | for (; h > 0; --h) |
1861 | 0 | { |
1862 | 0 | UNROLL8(w, NOP, *cp++ = PACK4(pp[0], pp[1], pp[2], pp[3]); |
1863 | 0 | pp += samplesperpixel); |
1864 | 0 | cp += toskew; |
1865 | 0 | pp += fromskewLocal; |
1866 | 0 | } |
1867 | 0 | } |
1868 | | |
1869 | | /* |
1870 | | * 8-bit packed samples => RGBA w/ unassociated alpha |
1871 | | * (known to have Map == NULL) |
1872 | | */ |
1873 | | DECLAREContigPutFunc(putRGBUAcontig8bittile) |
1874 | 0 | { |
1875 | 0 | int samplesperpixel = img->samplesperpixel; |
1876 | 0 | (void)y; |
1877 | 0 | const tmsize_t fromskewLocal = |
1878 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1879 | 0 | for (; h > 0; --h) |
1880 | 0 | { |
1881 | 0 | uint32_t r, g, b, a; |
1882 | 0 | uint8_t *m; |
1883 | 0 | for (x = w; x > 0; --x) |
1884 | 0 | { |
1885 | 0 | a = pp[3]; |
1886 | 0 | m = img->UaToAa + ((size_t)a << 8); |
1887 | 0 | r = m[pp[0]]; |
1888 | 0 | g = m[pp[1]]; |
1889 | 0 | b = m[pp[2]]; |
1890 | 0 | *cp++ = PACK4(r, g, b, a); |
1891 | 0 | pp += samplesperpixel; |
1892 | 0 | } |
1893 | 0 | cp += toskew; |
1894 | 0 | pp += fromskewLocal; |
1895 | 0 | } |
1896 | 0 | } |
1897 | | |
1898 | | /* |
1899 | | * 16-bit packed samples => RGB |
1900 | | */ |
1901 | | DECLAREContigPutFunc(putRGBcontig16bittile) |
1902 | 0 | { |
1903 | 0 | int samplesperpixel = img->samplesperpixel; |
1904 | 0 | uint16_t *wp = (uint16_t *)pp; |
1905 | 0 | (void)y; |
1906 | 0 | const tmsize_t fromskewLocal = |
1907 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1908 | 0 | for (; h > 0; --h) |
1909 | 0 | { |
1910 | 0 | for (x = w; x > 0; --x) |
1911 | 0 | { |
1912 | 0 | *cp++ = PACK(img->Bitdepth16To8[wp[0]], img->Bitdepth16To8[wp[1]], |
1913 | 0 | img->Bitdepth16To8[wp[2]]); |
1914 | 0 | wp += samplesperpixel; |
1915 | 0 | } |
1916 | 0 | cp += toskew; |
1917 | 0 | wp += fromskewLocal; |
1918 | 0 | } |
1919 | 0 | } |
1920 | | |
1921 | | /* |
1922 | | * 16-bit packed samples => RGBA w/ associated alpha |
1923 | | * (known to have Map == NULL) |
1924 | | */ |
1925 | | DECLAREContigPutFunc(putRGBAAcontig16bittile) |
1926 | 0 | { |
1927 | 0 | int samplesperpixel = img->samplesperpixel; |
1928 | 0 | uint16_t *wp = (uint16_t *)pp; |
1929 | 0 | (void)y; |
1930 | 0 | const tmsize_t fromskewLocal = |
1931 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1932 | 0 | for (; h > 0; --h) |
1933 | 0 | { |
1934 | 0 | for (x = w; x > 0; --x) |
1935 | 0 | { |
1936 | 0 | *cp++ = PACK4(img->Bitdepth16To8[wp[0]], img->Bitdepth16To8[wp[1]], |
1937 | 0 | img->Bitdepth16To8[wp[2]], img->Bitdepth16To8[wp[3]]); |
1938 | 0 | wp += samplesperpixel; |
1939 | 0 | } |
1940 | 0 | cp += toskew; |
1941 | 0 | wp += fromskewLocal; |
1942 | 0 | } |
1943 | 0 | } |
1944 | | |
1945 | | /* |
1946 | | * 16-bit packed samples => RGBA w/ unassociated alpha |
1947 | | * (known to have Map == NULL) |
1948 | | */ |
1949 | | DECLAREContigPutFunc(putRGBUAcontig16bittile) |
1950 | 0 | { |
1951 | 0 | int samplesperpixel = img->samplesperpixel; |
1952 | 0 | uint16_t *wp = (uint16_t *)pp; |
1953 | 0 | (void)y; |
1954 | 0 | const tmsize_t fromskewLocal = |
1955 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1956 | 0 | for (; h > 0; --h) |
1957 | 0 | { |
1958 | 0 | uint32_t r, g, b, a; |
1959 | 0 | uint8_t *m; |
1960 | 0 | for (x = w; x > 0; --x) |
1961 | 0 | { |
1962 | 0 | a = img->Bitdepth16To8[wp[3]]; |
1963 | 0 | m = img->UaToAa + ((size_t)a << 8); |
1964 | 0 | r = m[img->Bitdepth16To8[wp[0]]]; |
1965 | 0 | g = m[img->Bitdepth16To8[wp[1]]]; |
1966 | 0 | b = m[img->Bitdepth16To8[wp[2]]]; |
1967 | 0 | *cp++ = PACK4(r, g, b, a); |
1968 | 0 | wp += samplesperpixel; |
1969 | 0 | } |
1970 | 0 | cp += toskew; |
1971 | 0 | wp += fromskewLocal; |
1972 | 0 | } |
1973 | 0 | } |
1974 | | |
1975 | | /* |
1976 | | * 8-bit packed CMYK samples w/o Map => RGB |
1977 | | * |
1978 | | * NB: The conversion of CMYK->RGB is *very* crude. |
1979 | | */ |
1980 | | DECLAREContigPutFunc(putRGBcontig8bitCMYKtile) |
1981 | 0 | { |
1982 | 0 | int samplesperpixel = img->samplesperpixel; |
1983 | 0 | uint16_t r, g, b, k; |
1984 | |
|
1985 | 0 | (void)x; |
1986 | 0 | (void)y; |
1987 | 0 | const tmsize_t fromskewLocal = |
1988 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
1989 | 0 | for (; h > 0; --h) |
1990 | 0 | { |
1991 | 0 | UNROLL8(w, NOP, k = (uint16_t)(255 - pp[3]); |
1992 | 0 | r = (uint16_t)((k * (uint16_t)(255 - pp[0])) / 255); |
1993 | 0 | g = (uint16_t)((k * (uint16_t)(255 - pp[1])) / 255); |
1994 | 0 | b = (uint16_t)((k * (uint16_t)(255 - pp[2])) / 255); |
1995 | 0 | *cp++ = PACK(r, g, b); pp += samplesperpixel); |
1996 | 0 | cp += toskew; |
1997 | 0 | pp += fromskewLocal; |
1998 | 0 | } |
1999 | 0 | } |
2000 | | |
2001 | | /* |
2002 | | * 8-bit packed CMYK samples w/Map => RGB |
2003 | | * |
2004 | | * NB: The conversion of CMYK->RGB is *very* crude. |
2005 | | */ |
2006 | | DECLAREContigPutFunc(putRGBcontig8bitCMYKMaptile) |
2007 | 0 | { |
2008 | 0 | int samplesperpixel = img->samplesperpixel; |
2009 | 0 | TIFFRGBValue *Map = img->Map; |
2010 | 0 | unsigned int r, g, b, k; |
2011 | |
|
2012 | 0 | (void)y; |
2013 | 0 | const tmsize_t fromskewLocal = |
2014 | 0 | (tmsize_t)fromskew * (tmsize_t)samplesperpixel; |
2015 | 0 | for (; h > 0; --h) |
2016 | 0 | { |
2017 | 0 | for (x = w; x > 0; --x) |
2018 | 0 | { |
2019 | 0 | k = 255U - pp[3]; |
2020 | 0 | r = (k * (255U - pp[0])) / 255U; |
2021 | 0 | g = (k * (255U - pp[1])) / 255U; |
2022 | 0 | b = (k * (255U - pp[2])) / 255U; |
2023 | 0 | *cp++ = PACK(Map[r], Map[g], Map[b]); |
2024 | 0 | pp += samplesperpixel; |
2025 | 0 | } |
2026 | 0 | pp += fromskewLocal; |
2027 | 0 | cp += toskew; |
2028 | 0 | } |
2029 | 0 | } |
2030 | | |
2031 | | #define DECLARESepPutFunc(name) \ |
2032 | | static void name(TIFFRGBAImage *img, uint32_t *cp, uint32_t x, uint32_t y, \ |
2033 | | uint32_t w, uint32_t h, int32_t fromskew, int32_t toskew, \ |
2034 | | unsigned char *r, unsigned char *g, unsigned char *b, \ |
2035 | | unsigned char *a) |
2036 | | |
2037 | | /* |
2038 | | * 8-bit unpacked samples => RGB |
2039 | | */ |
2040 | | DECLARESepPutFunc(putRGBseparate8bittile) |
2041 | 0 | { |
2042 | 0 | (void)img; |
2043 | 0 | (void)x; |
2044 | 0 | (void)y; |
2045 | 0 | (void)a; |
2046 | 0 | for (; h > 0; --h) |
2047 | 0 | { |
2048 | 0 | UNROLL8(w, NOP, *cp++ = PACK(*r++, *g++, *b++)); |
2049 | 0 | SKEW(r, g, b, fromskew); |
2050 | 0 | cp += toskew; |
2051 | 0 | } |
2052 | 0 | } |
2053 | | |
2054 | | /* |
2055 | | * 8-bit unpacked samples => RGBA w/ associated alpha |
2056 | | */ |
2057 | | DECLARESepPutFunc(putRGBAAseparate8bittile) |
2058 | 0 | { |
2059 | 0 | (void)img; |
2060 | 0 | (void)x; |
2061 | 0 | (void)y; |
2062 | 0 | for (; h > 0; --h) |
2063 | 0 | { |
2064 | 0 | UNROLL8(w, NOP, *cp++ = PACK4(*r++, *g++, *b++, *a++)); |
2065 | 0 | SKEW4(r, g, b, a, fromskew); |
2066 | 0 | cp += toskew; |
2067 | 0 | } |
2068 | 0 | } |
2069 | | |
2070 | | /* |
2071 | | * 8-bit unpacked CMYK samples => RGBA |
2072 | | */ |
2073 | | DECLARESepPutFunc(putCMYKseparate8bittile) |
2074 | 0 | { |
2075 | 0 | (void)img; |
2076 | 0 | (void)y; |
2077 | 0 | for (; h > 0; --h) |
2078 | 0 | { |
2079 | 0 | unsigned int rv, gv, bv, kv; |
2080 | 0 | for (x = w; x > 0; --x) |
2081 | 0 | { |
2082 | 0 | kv = 255U - *a++; |
2083 | 0 | rv = (kv * (255U - *r++)) / 255U; |
2084 | 0 | gv = (kv * (255U - *g++)) / 255U; |
2085 | 0 | bv = (kv * (255U - *b++)) / 255U; |
2086 | 0 | *cp++ = PACK4(rv, gv, bv, 255); |
2087 | 0 | } |
2088 | 0 | SKEW4(r, g, b, a, fromskew); |
2089 | 0 | cp += toskew; |
2090 | 0 | } |
2091 | 0 | } |
2092 | | |
2093 | | /* |
2094 | | * 8-bit unpacked samples => RGBA w/ unassociated alpha |
2095 | | */ |
2096 | | DECLARESepPutFunc(putRGBUAseparate8bittile) |
2097 | 0 | { |
2098 | 0 | (void)img; |
2099 | 0 | (void)y; |
2100 | 0 | for (; h > 0; --h) |
2101 | 0 | { |
2102 | 0 | uint32_t rv, gv, bv, av; |
2103 | 0 | uint8_t *m; |
2104 | 0 | for (x = w; x > 0; --x) |
2105 | 0 | { |
2106 | 0 | av = *a++; |
2107 | 0 | m = img->UaToAa + ((size_t)av << 8); |
2108 | 0 | rv = m[*r++]; |
2109 | 0 | gv = m[*g++]; |
2110 | 0 | bv = m[*b++]; |
2111 | 0 | *cp++ = PACK4(rv, gv, bv, av); |
2112 | 0 | } |
2113 | 0 | SKEW4(r, g, b, a, fromskew); |
2114 | 0 | cp += toskew; |
2115 | 0 | } |
2116 | 0 | } |
2117 | | |
2118 | | /* |
2119 | | * 16-bit unpacked samples => RGB |
2120 | | */ |
2121 | | DECLARESepPutFunc(putRGBseparate16bittile) |
2122 | 0 | { |
2123 | 0 | uint16_t *wr = (uint16_t *)r; |
2124 | 0 | uint16_t *wg = (uint16_t *)g; |
2125 | 0 | uint16_t *wb = (uint16_t *)b; |
2126 | 0 | (void)img; |
2127 | 0 | (void)y; |
2128 | 0 | (void)a; |
2129 | 0 | for (; h > 0; --h) |
2130 | 0 | { |
2131 | 0 | for (x = 0; x < w; x++) |
2132 | 0 | *cp++ = PACK(img->Bitdepth16To8[*wr++], img->Bitdepth16To8[*wg++], |
2133 | 0 | img->Bitdepth16To8[*wb++]); |
2134 | 0 | SKEW(wr, wg, wb, fromskew); |
2135 | 0 | cp += toskew; |
2136 | 0 | } |
2137 | 0 | } |
2138 | | |
2139 | | /* |
2140 | | * 16-bit unpacked samples => RGBA w/ associated alpha |
2141 | | */ |
2142 | | DECLARESepPutFunc(putRGBAAseparate16bittile) |
2143 | 0 | { |
2144 | 0 | uint16_t *wr = (uint16_t *)r; |
2145 | 0 | uint16_t *wg = (uint16_t *)g; |
2146 | 0 | uint16_t *wb = (uint16_t *)b; |
2147 | 0 | uint16_t *wa = (uint16_t *)a; |
2148 | 0 | (void)img; |
2149 | 0 | (void)y; |
2150 | 0 | for (; h > 0; --h) |
2151 | 0 | { |
2152 | 0 | for (x = 0; x < w; x++) |
2153 | 0 | *cp++ = PACK4(img->Bitdepth16To8[*wr++], img->Bitdepth16To8[*wg++], |
2154 | 0 | img->Bitdepth16To8[*wb++], img->Bitdepth16To8[*wa++]); |
2155 | 0 | SKEW4(wr, wg, wb, wa, fromskew); |
2156 | 0 | cp += toskew; |
2157 | 0 | } |
2158 | 0 | } |
2159 | | |
2160 | | /* |
2161 | | * 16-bit unpacked samples => RGBA w/ unassociated alpha |
2162 | | */ |
2163 | | DECLARESepPutFunc(putRGBUAseparate16bittile) |
2164 | 0 | { |
2165 | 0 | uint16_t *wr = (uint16_t *)r; |
2166 | 0 | uint16_t *wg = (uint16_t *)g; |
2167 | 0 | uint16_t *wb = (uint16_t *)b; |
2168 | 0 | uint16_t *wa = (uint16_t *)a; |
2169 | 0 | (void)img; |
2170 | 0 | (void)y; |
2171 | 0 | for (; h > 0; --h) |
2172 | 0 | { |
2173 | 0 | uint32_t r2, g2, b2, a2; |
2174 | 0 | uint8_t *m; |
2175 | 0 | for (x = w; x > 0; --x) |
2176 | 0 | { |
2177 | 0 | a2 = img->Bitdepth16To8[*wa++]; |
2178 | 0 | m = img->UaToAa + ((size_t)a2 << 8); |
2179 | 0 | r2 = m[img->Bitdepth16To8[*wr++]]; |
2180 | 0 | g2 = m[img->Bitdepth16To8[*wg++]]; |
2181 | 0 | b2 = m[img->Bitdepth16To8[*wb++]]; |
2182 | 0 | *cp++ = PACK4(r2, g2, b2, a2); |
2183 | 0 | } |
2184 | 0 | SKEW4(wr, wg, wb, wa, fromskew); |
2185 | 0 | cp += toskew; |
2186 | 0 | } |
2187 | 0 | } |
2188 | | |
2189 | | /* |
2190 | | * 8-bit packed CIE L*a*b 1976 samples => RGB |
2191 | | */ |
2192 | | DECLAREContigPutFunc(putcontig8bitCIELab8) |
2193 | 0 | { |
2194 | 0 | float X, Y, Z; |
2195 | 0 | uint32_t r, g, b; |
2196 | 0 | (void)y; |
2197 | 0 | const tmsize_t fromskewLocal = (tmsize_t)fromskew * (tmsize_t)3; |
2198 | 0 | for (; h > 0; --h) |
2199 | 0 | { |
2200 | 0 | for (x = w; x > 0; --x) |
2201 | 0 | { |
2202 | 0 | TIFFCIELabToXYZ(img->cielab, (unsigned char)pp[0], |
2203 | 0 | (signed char)pp[1], (signed char)pp[2], &X, &Y, &Z); |
2204 | 0 | TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b); |
2205 | 0 | *cp++ = PACK(r, g, b); |
2206 | 0 | pp += 3; |
2207 | 0 | } |
2208 | 0 | cp += toskew; |
2209 | 0 | pp += fromskewLocal; |
2210 | 0 | } |
2211 | 0 | } |
2212 | | |
2213 | | /* |
2214 | | * 16-bit packed CIE L*a*b 1976 samples => RGB |
2215 | | */ |
2216 | | DECLAREContigPutFunc(putcontig8bitCIELab16) |
2217 | 0 | { |
2218 | 0 | float X, Y, Z; |
2219 | 0 | uint32_t r, g, b; |
2220 | 0 | uint16_t *wp = (uint16_t *)pp; |
2221 | 0 | (void)y; |
2222 | 0 | const tmsize_t fromskewLocal = (tmsize_t)fromskew * (tmsize_t)3; |
2223 | 0 | for (; h > 0; --h) |
2224 | 0 | { |
2225 | 0 | for (x = w; x > 0; --x) |
2226 | 0 | { |
2227 | 0 | TIFFCIELab16ToXYZ(img->cielab, (uint16_t)wp[0], (int16_t)wp[1], |
2228 | 0 | (int16_t)wp[2], &X, &Y, &Z); |
2229 | 0 | TIFFXYZToRGB(img->cielab, X, Y, Z, &r, &g, &b); |
2230 | 0 | *cp++ = PACK(r, g, b); |
2231 | 0 | wp += 3; |
2232 | 0 | } |
2233 | 0 | cp += toskew; |
2234 | 0 | wp += fromskewLocal; |
2235 | 0 | } |
2236 | 0 | } |
2237 | | |
2238 | | /* |
2239 | | * YCbCr -> RGB conversion and packing routines. |
2240 | | */ |
2241 | | |
2242 | | #define YCbCrtoRGB(dst, Y) \ |
2243 | 0 | { \ |
2244 | 0 | uint32_t r, g, b; \ |
2245 | 0 | TIFFYCbCrtoRGB(img->ycbcr, (Y), (int32_t)Cb, (int32_t)Cr, &r, &g, &b); \ |
2246 | 0 | dst = PACK(r, g, b); \ |
2247 | 0 | } |
2248 | | |
2249 | | /* |
2250 | | * 8-bit packed YCbCr samples w/ 4,4 subsampling => RGB |
2251 | | */ |
2252 | | DECLAREContigPutFunc(putcontig8bitYCbCr44tile) |
2253 | 0 | { |
2254 | 0 | uint32_t *cp1 = cp + w + toskew; |
2255 | 0 | uint32_t *cp2 = cp1 + w + toskew; |
2256 | 0 | uint32_t *cp3 = cp2 + w + toskew; |
2257 | 0 | const tmsize_t incr = 3 * (tmsize_t)w + 4 * (tmsize_t)toskew; |
2258 | |
|
2259 | 0 | (void)y; |
2260 | | /* adjust fromskew */ |
2261 | 0 | const tmsize_t fromskewLocal = |
2262 | 0 | (tmsize_t)(fromskew / 4) * (tmsize_t)(4 * 4 + 2); |
2263 | 0 | if ((h & 3) == 0 && (w & 3) == 0) |
2264 | 0 | { |
2265 | 0 | for (; h >= 4; h -= 4) |
2266 | 0 | { |
2267 | 0 | x = w >> 2; |
2268 | 0 | do |
2269 | 0 | { |
2270 | 0 | int32_t Cb = pp[16]; |
2271 | 0 | int32_t Cr = pp[17]; |
2272 | |
|
2273 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2274 | 0 | YCbCrtoRGB(cp[1], pp[1]); |
2275 | 0 | YCbCrtoRGB(cp[2], pp[2]); |
2276 | 0 | YCbCrtoRGB(cp[3], pp[3]); |
2277 | 0 | YCbCrtoRGB(cp1[0], pp[4]); |
2278 | 0 | YCbCrtoRGB(cp1[1], pp[5]); |
2279 | 0 | YCbCrtoRGB(cp1[2], pp[6]); |
2280 | 0 | YCbCrtoRGB(cp1[3], pp[7]); |
2281 | 0 | YCbCrtoRGB(cp2[0], pp[8]); |
2282 | 0 | YCbCrtoRGB(cp2[1], pp[9]); |
2283 | 0 | YCbCrtoRGB(cp2[2], pp[10]); |
2284 | 0 | YCbCrtoRGB(cp2[3], pp[11]); |
2285 | 0 | YCbCrtoRGB(cp3[0], pp[12]); |
2286 | 0 | YCbCrtoRGB(cp3[1], pp[13]); |
2287 | 0 | YCbCrtoRGB(cp3[2], pp[14]); |
2288 | 0 | YCbCrtoRGB(cp3[3], pp[15]); |
2289 | |
|
2290 | 0 | cp += 4; |
2291 | 0 | cp1 += 4; |
2292 | 0 | cp2 += 4; |
2293 | 0 | cp3 += 4; |
2294 | 0 | pp += 18; |
2295 | 0 | } while (--x); |
2296 | 0 | cp += incr; |
2297 | 0 | cp1 += incr; |
2298 | 0 | cp2 += incr; |
2299 | 0 | cp3 += incr; |
2300 | 0 | pp += fromskewLocal; |
2301 | 0 | } |
2302 | 0 | } |
2303 | 0 | else |
2304 | 0 | { |
2305 | 0 | while (h > 0) |
2306 | 0 | { |
2307 | 0 | for (x = w; x > 0;) |
2308 | 0 | { |
2309 | 0 | int32_t Cb = pp[16]; |
2310 | 0 | int32_t Cr = pp[17]; |
2311 | 0 | switch (x) |
2312 | 0 | { |
2313 | 0 | default: |
2314 | 0 | switch (h) |
2315 | 0 | { |
2316 | 0 | default: |
2317 | 0 | YCbCrtoRGB(cp3[3], pp[15]); /* FALLTHROUGH */ |
2318 | 0 | case 3: |
2319 | 0 | YCbCrtoRGB(cp2[3], pp[11]); /* FALLTHROUGH */ |
2320 | 0 | case 2: |
2321 | 0 | YCbCrtoRGB(cp1[3], pp[7]); /* FALLTHROUGH */ |
2322 | 0 | case 1: |
2323 | 0 | YCbCrtoRGB(cp[3], pp[3]); /* FALLTHROUGH */ |
2324 | 0 | } /* FALLTHROUGH */ |
2325 | 0 | case 3: |
2326 | 0 | switch (h) |
2327 | 0 | { |
2328 | 0 | default: |
2329 | 0 | YCbCrtoRGB(cp3[2], pp[14]); /* FALLTHROUGH */ |
2330 | 0 | case 3: |
2331 | 0 | YCbCrtoRGB(cp2[2], pp[10]); /* FALLTHROUGH */ |
2332 | 0 | case 2: |
2333 | 0 | YCbCrtoRGB(cp1[2], pp[6]); /* FALLTHROUGH */ |
2334 | 0 | case 1: |
2335 | 0 | YCbCrtoRGB(cp[2], pp[2]); /* FALLTHROUGH */ |
2336 | 0 | } /* FALLTHROUGH */ |
2337 | 0 | case 2: |
2338 | 0 | switch (h) |
2339 | 0 | { |
2340 | 0 | default: |
2341 | 0 | YCbCrtoRGB(cp3[1], pp[13]); /* FALLTHROUGH */ |
2342 | 0 | case 3: |
2343 | 0 | YCbCrtoRGB(cp2[1], pp[9]); /* FALLTHROUGH */ |
2344 | 0 | case 2: |
2345 | 0 | YCbCrtoRGB(cp1[1], pp[5]); /* FALLTHROUGH */ |
2346 | 0 | case 1: |
2347 | 0 | YCbCrtoRGB(cp[1], pp[1]); /* FALLTHROUGH */ |
2348 | 0 | } /* FALLTHROUGH */ |
2349 | 0 | case 1: |
2350 | 0 | switch (h) |
2351 | 0 | { |
2352 | 0 | default: |
2353 | 0 | YCbCrtoRGB(cp3[0], pp[12]); /* FALLTHROUGH */ |
2354 | 0 | case 3: |
2355 | 0 | YCbCrtoRGB(cp2[0], pp[8]); /* FALLTHROUGH */ |
2356 | 0 | case 2: |
2357 | 0 | YCbCrtoRGB(cp1[0], pp[4]); /* FALLTHROUGH */ |
2358 | 0 | case 1: |
2359 | 0 | YCbCrtoRGB(cp[0], pp[0]); /* FALLTHROUGH */ |
2360 | 0 | } /* FALLTHROUGH */ |
2361 | 0 | } |
2362 | 0 | if (x < 4) |
2363 | 0 | { |
2364 | 0 | cp += x; |
2365 | 0 | cp1 += x; |
2366 | 0 | cp2 += x; |
2367 | 0 | cp3 += x; |
2368 | 0 | x = 0; |
2369 | 0 | } |
2370 | 0 | else |
2371 | 0 | { |
2372 | 0 | cp += 4; |
2373 | 0 | cp1 += 4; |
2374 | 0 | cp2 += 4; |
2375 | 0 | cp3 += 4; |
2376 | 0 | x -= 4; |
2377 | 0 | } |
2378 | 0 | pp += 18; |
2379 | 0 | } |
2380 | 0 | if (h <= 4) |
2381 | 0 | break; |
2382 | 0 | h -= 4; |
2383 | 0 | cp += incr; |
2384 | 0 | cp1 += incr; |
2385 | 0 | cp2 += incr; |
2386 | 0 | cp3 += incr; |
2387 | 0 | pp += fromskewLocal; |
2388 | 0 | } |
2389 | 0 | } |
2390 | 0 | } |
2391 | | |
2392 | | /* |
2393 | | * 8-bit packed YCbCr samples w/ 4,2 subsampling => RGB |
2394 | | */ |
2395 | | DECLAREContigPutFunc(putcontig8bitYCbCr42tile) |
2396 | 0 | { |
2397 | 0 | uint32_t *cp1 = cp + w + toskew; |
2398 | 0 | const tmsize_t incr = 2 * (tmsize_t)toskew + (tmsize_t)w; |
2399 | |
|
2400 | 0 | (void)y; |
2401 | 0 | const tmsize_t fromskewLocal = |
2402 | 0 | (tmsize_t)(fromskew / 4) * (tmsize_t)(4 * 2 + 2); |
2403 | 0 | if ((w & 3) == 0 && (h & 1) == 0) |
2404 | 0 | { |
2405 | 0 | for (; h >= 2; h -= 2) |
2406 | 0 | { |
2407 | 0 | x = w >> 2; |
2408 | 0 | do |
2409 | 0 | { |
2410 | 0 | int32_t Cb = pp[8]; |
2411 | 0 | int32_t Cr = pp[9]; |
2412 | |
|
2413 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2414 | 0 | YCbCrtoRGB(cp[1], pp[1]); |
2415 | 0 | YCbCrtoRGB(cp[2], pp[2]); |
2416 | 0 | YCbCrtoRGB(cp[3], pp[3]); |
2417 | 0 | YCbCrtoRGB(cp1[0], pp[4]); |
2418 | 0 | YCbCrtoRGB(cp1[1], pp[5]); |
2419 | 0 | YCbCrtoRGB(cp1[2], pp[6]); |
2420 | 0 | YCbCrtoRGB(cp1[3], pp[7]); |
2421 | |
|
2422 | 0 | cp += 4; |
2423 | 0 | cp1 += 4; |
2424 | 0 | pp += 10; |
2425 | 0 | } while (--x); |
2426 | 0 | cp += incr; |
2427 | 0 | cp1 += incr; |
2428 | 0 | pp += fromskewLocal; |
2429 | 0 | } |
2430 | 0 | } |
2431 | 0 | else |
2432 | 0 | { |
2433 | 0 | while (h > 0) |
2434 | 0 | { |
2435 | 0 | for (x = w; x > 0;) |
2436 | 0 | { |
2437 | 0 | int32_t Cb = pp[8]; |
2438 | 0 | int32_t Cr = pp[9]; |
2439 | 0 | switch (x) |
2440 | 0 | { |
2441 | 0 | default: |
2442 | 0 | switch (h) |
2443 | 0 | { |
2444 | 0 | default: |
2445 | 0 | YCbCrtoRGB(cp1[3], pp[7]); /* FALLTHROUGH */ |
2446 | 0 | case 1: |
2447 | 0 | YCbCrtoRGB(cp[3], pp[3]); /* FALLTHROUGH */ |
2448 | 0 | } /* FALLTHROUGH */ |
2449 | 0 | case 3: |
2450 | 0 | switch (h) |
2451 | 0 | { |
2452 | 0 | default: |
2453 | 0 | YCbCrtoRGB(cp1[2], pp[6]); /* FALLTHROUGH */ |
2454 | 0 | case 1: |
2455 | 0 | YCbCrtoRGB(cp[2], pp[2]); /* FALLTHROUGH */ |
2456 | 0 | } /* FALLTHROUGH */ |
2457 | 0 | case 2: |
2458 | 0 | switch (h) |
2459 | 0 | { |
2460 | 0 | default: |
2461 | 0 | YCbCrtoRGB(cp1[1], pp[5]); /* FALLTHROUGH */ |
2462 | 0 | case 1: |
2463 | 0 | YCbCrtoRGB(cp[1], pp[1]); /* FALLTHROUGH */ |
2464 | 0 | } /* FALLTHROUGH */ |
2465 | 0 | case 1: |
2466 | 0 | switch (h) |
2467 | 0 | { |
2468 | 0 | default: |
2469 | 0 | YCbCrtoRGB(cp1[0], pp[4]); /* FALLTHROUGH */ |
2470 | 0 | case 1: |
2471 | 0 | YCbCrtoRGB(cp[0], pp[0]); /* FALLTHROUGH */ |
2472 | 0 | } /* FALLTHROUGH */ |
2473 | 0 | } |
2474 | 0 | if (x < 4) |
2475 | 0 | { |
2476 | 0 | cp += x; |
2477 | 0 | cp1 += x; |
2478 | 0 | x = 0; |
2479 | 0 | } |
2480 | 0 | else |
2481 | 0 | { |
2482 | 0 | cp += 4; |
2483 | 0 | cp1 += 4; |
2484 | 0 | x -= 4; |
2485 | 0 | } |
2486 | 0 | pp += 10; |
2487 | 0 | } |
2488 | 0 | if (h <= 2) |
2489 | 0 | break; |
2490 | 0 | h -= 2; |
2491 | 0 | cp += incr; |
2492 | 0 | cp1 += incr; |
2493 | 0 | pp += fromskewLocal; |
2494 | 0 | } |
2495 | 0 | } |
2496 | 0 | } |
2497 | | |
2498 | | /* |
2499 | | * 8-bit packed YCbCr samples w/ 4,1 subsampling => RGB |
2500 | | */ |
2501 | | DECLAREContigPutFunc(putcontig8bitYCbCr41tile) |
2502 | 0 | { |
2503 | 0 | (void)y; |
2504 | 0 | const tmsize_t fromskewLocal = |
2505 | 0 | (tmsize_t)(fromskew / 4) * (tmsize_t)(4 * 1 + 2); |
2506 | 0 | do |
2507 | 0 | { |
2508 | 0 | x = w >> 2; |
2509 | 0 | while (x > 0) |
2510 | 0 | { |
2511 | 0 | int32_t Cb = pp[4]; |
2512 | 0 | int32_t Cr = pp[5]; |
2513 | |
|
2514 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2515 | 0 | YCbCrtoRGB(cp[1], pp[1]); |
2516 | 0 | YCbCrtoRGB(cp[2], pp[2]); |
2517 | 0 | YCbCrtoRGB(cp[3], pp[3]); |
2518 | |
|
2519 | 0 | cp += 4; |
2520 | 0 | pp += 6; |
2521 | 0 | x--; |
2522 | 0 | } |
2523 | |
|
2524 | 0 | if ((w & 3) != 0) |
2525 | 0 | { |
2526 | 0 | int32_t Cb = pp[4]; |
2527 | 0 | int32_t Cr = pp[5]; |
2528 | |
|
2529 | 0 | switch ((w & 3)) |
2530 | 0 | { |
2531 | 0 | case 3: |
2532 | 0 | YCbCrtoRGB(cp[2], pp[2]); /*-fallthrough*/ |
2533 | 0 | case 2: |
2534 | 0 | YCbCrtoRGB(cp[1], pp[1]); /*-fallthrough*/ |
2535 | 0 | case 1: |
2536 | 0 | YCbCrtoRGB(cp[0], pp[0]); /*-fallthrough*/ |
2537 | 0 | case 0: |
2538 | 0 | break; |
2539 | 0 | default: |
2540 | 0 | break; |
2541 | 0 | } |
2542 | | |
2543 | 0 | cp += (w & 3); |
2544 | 0 | pp += 6; |
2545 | 0 | } |
2546 | | |
2547 | 0 | cp += toskew; |
2548 | 0 | pp += fromskewLocal; |
2549 | 0 | } while (--h); |
2550 | 0 | } |
2551 | | |
2552 | | /* |
2553 | | * 8-bit packed YCbCr samples w/ 2,2 subsampling => RGB |
2554 | | */ |
2555 | | DECLAREContigPutFunc(putcontig8bitYCbCr22tile) |
2556 | 0 | { |
2557 | 0 | uint32_t *cp2; |
2558 | 0 | const tmsize_t incr = 2 * (tmsize_t)toskew + (tmsize_t)w; |
2559 | 0 | (void)y; |
2560 | 0 | const tmsize_t fromskewLocal = |
2561 | 0 | (tmsize_t)(fromskew / 2) * (tmsize_t)(2 * 2 + 2); |
2562 | 0 | cp2 = cp + w + toskew; |
2563 | 0 | while (h >= 2) |
2564 | 0 | { |
2565 | 0 | x = w; |
2566 | 0 | while (x >= 2) |
2567 | 0 | { |
2568 | 0 | uint32_t Cb = pp[4]; |
2569 | 0 | uint32_t Cr = pp[5]; |
2570 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2571 | 0 | YCbCrtoRGB(cp[1], pp[1]); |
2572 | 0 | YCbCrtoRGB(cp2[0], pp[2]); |
2573 | 0 | YCbCrtoRGB(cp2[1], pp[3]); |
2574 | 0 | cp += 2; |
2575 | 0 | cp2 += 2; |
2576 | 0 | pp += 6; |
2577 | 0 | x -= 2; |
2578 | 0 | } |
2579 | 0 | if (x == 1) |
2580 | 0 | { |
2581 | 0 | uint32_t Cb = pp[4]; |
2582 | 0 | uint32_t Cr = pp[5]; |
2583 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2584 | 0 | YCbCrtoRGB(cp2[0], pp[2]); |
2585 | 0 | cp++; |
2586 | 0 | cp2++; |
2587 | 0 | pp += 6; |
2588 | 0 | } |
2589 | 0 | cp += incr; |
2590 | 0 | cp2 += incr; |
2591 | 0 | pp += fromskewLocal; |
2592 | 0 | h -= 2; |
2593 | 0 | } |
2594 | 0 | if (h == 1) |
2595 | 0 | { |
2596 | 0 | x = w; |
2597 | 0 | while (x >= 2) |
2598 | 0 | { |
2599 | 0 | uint32_t Cb = pp[4]; |
2600 | 0 | uint32_t Cr = pp[5]; |
2601 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2602 | 0 | YCbCrtoRGB(cp[1], pp[1]); |
2603 | 0 | cp += 2; |
2604 | 0 | cp2 += 2; |
2605 | 0 | pp += 6; |
2606 | 0 | x -= 2; |
2607 | 0 | } |
2608 | 0 | if (x == 1) |
2609 | 0 | { |
2610 | 0 | uint32_t Cb = pp[4]; |
2611 | 0 | uint32_t Cr = pp[5]; |
2612 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2613 | 0 | } |
2614 | 0 | } |
2615 | 0 | } |
2616 | | |
2617 | | /* |
2618 | | * 8-bit packed YCbCr samples w/ 2,1 subsampling => RGB |
2619 | | */ |
2620 | | DECLAREContigPutFunc(putcontig8bitYCbCr21tile) |
2621 | 0 | { |
2622 | 0 | (void)y; |
2623 | 0 | const tmsize_t fromskewLocal = |
2624 | 0 | (tmsize_t)(fromskew / 2) * (tmsize_t)(2 * 1 + 2); |
2625 | 0 | do |
2626 | 0 | { |
2627 | 0 | x = w >> 1; |
2628 | 0 | while (x > 0) |
2629 | 0 | { |
2630 | 0 | int32_t Cb = pp[2]; |
2631 | 0 | int32_t Cr = pp[3]; |
2632 | |
|
2633 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2634 | 0 | YCbCrtoRGB(cp[1], pp[1]); |
2635 | |
|
2636 | 0 | cp += 2; |
2637 | 0 | pp += 4; |
2638 | 0 | x--; |
2639 | 0 | } |
2640 | |
|
2641 | 0 | if ((w & 1) != 0) |
2642 | 0 | { |
2643 | 0 | int32_t Cb = pp[2]; |
2644 | 0 | int32_t Cr = pp[3]; |
2645 | |
|
2646 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2647 | |
|
2648 | 0 | cp += 1; |
2649 | 0 | pp += 4; |
2650 | 0 | } |
2651 | |
|
2652 | 0 | cp += toskew; |
2653 | 0 | pp += fromskewLocal; |
2654 | 0 | } while (--h); |
2655 | 0 | } |
2656 | | |
2657 | | /* |
2658 | | * 8-bit packed YCbCr samples w/ 1,2 subsampling => RGB |
2659 | | */ |
2660 | | DECLAREContigPutFunc(putcontig8bitYCbCr12tile) |
2661 | 0 | { |
2662 | 0 | uint32_t *cp2; |
2663 | 0 | const tmsize_t incr = 2 * (tmsize_t)toskew + (tmsize_t)w; |
2664 | 0 | (void)y; |
2665 | 0 | const tmsize_t fromskewLocal = |
2666 | 0 | (tmsize_t)(fromskew / 1) * (tmsize_t)(1 * 2 + 2); |
2667 | 0 | cp2 = cp + w + toskew; |
2668 | 0 | while (h >= 2) |
2669 | 0 | { |
2670 | 0 | x = w; |
2671 | 0 | do |
2672 | 0 | { |
2673 | 0 | uint32_t Cb = pp[2]; |
2674 | 0 | uint32_t Cr = pp[3]; |
2675 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2676 | 0 | YCbCrtoRGB(cp2[0], pp[1]); |
2677 | 0 | cp++; |
2678 | 0 | cp2++; |
2679 | 0 | pp += 4; |
2680 | 0 | } while (--x); |
2681 | 0 | cp += incr; |
2682 | 0 | cp2 += incr; |
2683 | 0 | pp += fromskewLocal; |
2684 | 0 | h -= 2; |
2685 | 0 | } |
2686 | 0 | if (h == 1) |
2687 | 0 | { |
2688 | 0 | x = w; |
2689 | 0 | do |
2690 | 0 | { |
2691 | 0 | uint32_t Cb = pp[2]; |
2692 | 0 | uint32_t Cr = pp[3]; |
2693 | 0 | YCbCrtoRGB(cp[0], pp[0]); |
2694 | 0 | cp++; |
2695 | 0 | pp += 4; |
2696 | 0 | } while (--x); |
2697 | 0 | } |
2698 | 0 | } |
2699 | | |
2700 | | /* |
2701 | | * 8-bit packed YCbCr samples w/ no subsampling => RGB |
2702 | | */ |
2703 | | DECLAREContigPutFunc(putcontig8bitYCbCr11tile) |
2704 | 0 | { |
2705 | 0 | (void)y; |
2706 | 0 | const tmsize_t fromskewLocal = |
2707 | 0 | (tmsize_t)(fromskew / 1) * (tmsize_t)(1 * 1 + 2); |
2708 | 0 | do |
2709 | 0 | { |
2710 | 0 | x = w; /* was x = w>>1; patched 2000/09/25 warmerda@home.com */ |
2711 | 0 | do |
2712 | 0 | { |
2713 | 0 | int32_t Cb = pp[1]; |
2714 | 0 | int32_t Cr = pp[2]; |
2715 | |
|
2716 | 0 | YCbCrtoRGB(*cp++, pp[0]); |
2717 | |
|
2718 | 0 | pp += 3; |
2719 | 0 | } while (--x); |
2720 | 0 | cp += toskew; |
2721 | 0 | pp += fromskewLocal; |
2722 | 0 | } while (--h); |
2723 | 0 | } |
2724 | | |
2725 | | /* |
2726 | | * 8-bit packed YCbCr samples w/ no subsampling => RGB |
2727 | | */ |
2728 | | DECLARESepPutFunc(putseparate8bitYCbCr11tile) |
2729 | 0 | { |
2730 | 0 | (void)y; |
2731 | 0 | (void)a; |
2732 | | /* TODO: naming of input vars is still off, change obfuscating declaration |
2733 | | * inside define, or resolve obfuscation */ |
2734 | 0 | for (; h > 0; --h) |
2735 | 0 | { |
2736 | 0 | x = w; |
2737 | 0 | do |
2738 | 0 | { |
2739 | 0 | uint32_t dr, dg, db; |
2740 | 0 | TIFFYCbCrtoRGB(img->ycbcr, *r++, *g++, *b++, &dr, &dg, &db); |
2741 | 0 | *cp++ = PACK(dr, dg, db); |
2742 | 0 | } while (--x); |
2743 | 0 | SKEW(r, g, b, fromskew); |
2744 | 0 | cp += toskew; |
2745 | 0 | } |
2746 | 0 | } |
2747 | | #undef YCbCrtoRGB |
2748 | | |
2749 | | static int isInRefBlackWhiteRange(float f) |
2750 | 0 | { |
2751 | 0 | return f > (float)(-0x7FFFFFFF + 128) && f < (float)0x7FFFFFFF; |
2752 | 0 | } |
2753 | | |
2754 | | static int initYCbCrConversion(TIFFRGBAImage *img) |
2755 | 0 | { |
2756 | 0 | static const char module[] = "initYCbCrConversion"; |
2757 | |
|
2758 | 0 | float *luma, *refBlackWhite; |
2759 | |
|
2760 | 0 | if (img->ycbcr == NULL) |
2761 | 0 | { |
2762 | 0 | img->ycbcr = (TIFFYCbCrToRGB *)_TIFFmallocExt( |
2763 | 0 | img->tif, TIFFroundup_32(sizeof(TIFFYCbCrToRGB), sizeof(long)) + |
2764 | 0 | 4 * 256 * sizeof(TIFFRGBValue) + |
2765 | 0 | 2 * 256 * sizeof(int) + 3 * 256 * sizeof(int32_t)); |
2766 | 0 | if (img->ycbcr == NULL) |
2767 | 0 | { |
2768 | 0 | TIFFErrorExtR(img->tif, module, |
2769 | 0 | "No space for YCbCr->RGB conversion state"); |
2770 | 0 | return (0); |
2771 | 0 | } |
2772 | 0 | } |
2773 | | |
2774 | 0 | TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRCOEFFICIENTS, &luma); |
2775 | 0 | TIFFGetFieldDefaulted(img->tif, TIFFTAG_REFERENCEBLACKWHITE, |
2776 | 0 | &refBlackWhite); |
2777 | | |
2778 | | /* Do some validation to avoid later issues. Detect NaN for now */ |
2779 | | /* and also if lumaGreen is zero since we divide by it later */ |
2780 | 0 | if (isnan(luma[0]) || isnan(luma[1]) || TIFF_FLOAT_EQ(luma[1], 0.0f) || |
2781 | 0 | isnan(luma[2])) |
2782 | 0 | { |
2783 | 0 | TIFFErrorExtR(img->tif, module, |
2784 | 0 | "Invalid values for YCbCrCoefficients tag"); |
2785 | 0 | return (0); |
2786 | 0 | } |
2787 | | |
2788 | 0 | if (!isInRefBlackWhiteRange(refBlackWhite[0]) || |
2789 | 0 | !isInRefBlackWhiteRange(refBlackWhite[1]) || |
2790 | 0 | !isInRefBlackWhiteRange(refBlackWhite[2]) || |
2791 | 0 | !isInRefBlackWhiteRange(refBlackWhite[3]) || |
2792 | 0 | !isInRefBlackWhiteRange(refBlackWhite[4]) || |
2793 | 0 | !isInRefBlackWhiteRange(refBlackWhite[5])) |
2794 | 0 | { |
2795 | 0 | TIFFErrorExtR(img->tif, module, |
2796 | 0 | "Invalid values for ReferenceBlackWhite tag"); |
2797 | 0 | return (0); |
2798 | 0 | } |
2799 | | |
2800 | 0 | if (TIFFYCbCrToRGBInit(img->ycbcr, luma, refBlackWhite) < 0) |
2801 | 0 | return (0); |
2802 | 0 | return (1); |
2803 | 0 | } |
2804 | | |
2805 | | static tileContigRoutine initCIELabConversion(TIFFRGBAImage *img) |
2806 | 0 | { |
2807 | 0 | static const char module[] = "initCIELabConversion"; |
2808 | |
|
2809 | 0 | float *whitePoint; |
2810 | 0 | float refWhite[3]; |
2811 | |
|
2812 | 0 | TIFFGetFieldDefaulted(img->tif, TIFFTAG_WHITEPOINT, &whitePoint); |
2813 | 0 | if (TIFF_FLOAT_EQ(whitePoint[1], 0.0f)) |
2814 | 0 | { |
2815 | 0 | TIFFErrorExtR(img->tif, module, "Invalid value for WhitePoint tag."); |
2816 | 0 | return NULL; |
2817 | 0 | } |
2818 | | |
2819 | 0 | if (!img->cielab) |
2820 | 0 | { |
2821 | 0 | img->cielab = (TIFFCIELabToRGB *)_TIFFmallocExt( |
2822 | 0 | img->tif, sizeof(TIFFCIELabToRGB)); |
2823 | 0 | if (!img->cielab) |
2824 | 0 | { |
2825 | 0 | TIFFErrorExtR(img->tif, module, |
2826 | 0 | "No space for CIE L*a*b*->RGB conversion state."); |
2827 | 0 | return NULL; |
2828 | 0 | } |
2829 | 0 | } |
2830 | | |
2831 | 0 | refWhite[1] = 100.0f; |
2832 | 0 | refWhite[0] = whitePoint[0] / whitePoint[1] * refWhite[1]; |
2833 | 0 | refWhite[2] = |
2834 | 0 | (1.0f - whitePoint[0] - whitePoint[1]) / whitePoint[1] * refWhite[1]; |
2835 | 0 | if (TIFFCIELabToRGBInit(img->cielab, &display_sRGB, refWhite) < 0) |
2836 | 0 | { |
2837 | 0 | TIFFErrorExtR(img->tif, module, |
2838 | 0 | "Failed to initialize CIE L*a*b*->RGB conversion state."); |
2839 | 0 | _TIFFfreeExt(img->tif, img->cielab); |
2840 | 0 | return NULL; |
2841 | 0 | } |
2842 | | |
2843 | 0 | if (img->bitspersample == 8) |
2844 | 0 | return putcontig8bitCIELab8; |
2845 | 0 | else if (img->bitspersample == 16) |
2846 | 0 | return putcontig8bitCIELab16; |
2847 | 0 | return NULL; |
2848 | 0 | } |
2849 | | |
2850 | | /* |
2851 | | * Greyscale images with less than 8 bits/sample are handled |
2852 | | * with a table to avoid lots of shifts and masks. The table |
2853 | | * is setup so that put*bwtile (below) can retrieve 8/bitspersample |
2854 | | * pixel values simply by indexing into the table with one |
2855 | | * number. |
2856 | | */ |
2857 | | static int makebwmap(TIFFRGBAImage *img) |
2858 | 0 | { |
2859 | 0 | TIFFRGBValue *Map = img->Map; |
2860 | 0 | int bitspersample = img->bitspersample; |
2861 | 0 | int nsamples = 8 / bitspersample; |
2862 | 0 | int i; |
2863 | 0 | uint32_t *p; |
2864 | |
|
2865 | 0 | if (nsamples == 0) |
2866 | 0 | nsamples = 1; |
2867 | |
|
2868 | 0 | img->BWmap = (uint32_t **)_TIFFmallocExt( |
2869 | 0 | img->tif, |
2870 | 0 | (tmsize_t)((size_t)256 * sizeof(uint32_t *) + |
2871 | 0 | ((size_t)256 * (size_t)nsamples * sizeof(uint32_t)))); |
2872 | 0 | if (img->BWmap == NULL) |
2873 | 0 | { |
2874 | 0 | TIFFErrorExtR(img->tif, TIFFFileName(img->tif), |
2875 | 0 | "No space for B&W mapping table"); |
2876 | 0 | return (0); |
2877 | 0 | } |
2878 | 0 | p = (uint32_t *)(img->BWmap + 256); |
2879 | 0 | for (i = 0; i < 256; i++) |
2880 | 0 | { |
2881 | 0 | TIFFRGBValue c; |
2882 | 0 | img->BWmap[i] = p; |
2883 | 0 | switch (bitspersample) |
2884 | 0 | { |
2885 | 0 | #define GREY(x) \ |
2886 | 0 | c = Map[x]; \ |
2887 | 0 | *p++ = PACK(c, c, c); |
2888 | 0 | case 1: |
2889 | 0 | GREY(i >> 7); |
2890 | 0 | GREY((i >> 6) & 1); |
2891 | 0 | GREY((i >> 5) & 1); |
2892 | 0 | GREY((i >> 4) & 1); |
2893 | 0 | GREY((i >> 3) & 1); |
2894 | 0 | GREY((i >> 2) & 1); |
2895 | 0 | GREY((i >> 1) & 1); |
2896 | 0 | GREY(i & 1); |
2897 | 0 | break; |
2898 | 0 | case 2: |
2899 | 0 | GREY(i >> 6); |
2900 | 0 | GREY((i >> 4) & 3); |
2901 | 0 | GREY((i >> 2) & 3); |
2902 | 0 | GREY(i & 3); |
2903 | 0 | break; |
2904 | 0 | case 4: |
2905 | 0 | GREY(i >> 4); |
2906 | 0 | GREY(i & 0xf); |
2907 | 0 | break; |
2908 | 0 | case 8: |
2909 | 0 | case 16: |
2910 | 0 | GREY(i); |
2911 | 0 | break; |
2912 | 0 | default: |
2913 | 0 | break; |
2914 | 0 | } |
2915 | 0 | #undef GREY |
2916 | 0 | } |
2917 | 0 | return (1); |
2918 | 0 | } |
2919 | | |
2920 | | /* |
2921 | | * Construct a mapping table to convert from the range |
2922 | | * of the data samples to [0,255] --for display. This |
2923 | | * process also handles inverting B&W images when needed. |
2924 | | */ |
2925 | | static int setupMap(TIFFRGBAImage *img) |
2926 | 0 | { |
2927 | 0 | int32_t x, range; |
2928 | |
|
2929 | 0 | range = (int32_t)((1U << img->bitspersample) - 1U); |
2930 | | |
2931 | | /* treat 16 bit the same as eight bit */ |
2932 | 0 | if (img->bitspersample == 16) |
2933 | 0 | range = 255; |
2934 | |
|
2935 | 0 | img->Map = (TIFFRGBValue *)_TIFFmallocExt( |
2936 | 0 | img->tif, (tmsize_t)((size_t)(range + 1) * sizeof(TIFFRGBValue))); |
2937 | 0 | if (img->Map == NULL) |
2938 | 0 | { |
2939 | 0 | TIFFErrorExtR(img->tif, TIFFFileName(img->tif), |
2940 | 0 | "No space for photometric conversion table"); |
2941 | 0 | return (0); |
2942 | 0 | } |
2943 | 0 | if (img->photometric == PHOTOMETRIC_MINISWHITE) |
2944 | 0 | { |
2945 | 0 | for (x = 0; x <= range; x++) |
2946 | 0 | img->Map[x] = (TIFFRGBValue)(((range - x) * 255) / range); |
2947 | 0 | } |
2948 | 0 | else |
2949 | 0 | { |
2950 | 0 | for (x = 0; x <= range; x++) |
2951 | 0 | img->Map[x] = (TIFFRGBValue)((x * 255) / range); |
2952 | 0 | } |
2953 | 0 | if (img->bitspersample <= 16 && |
2954 | 0 | (img->photometric == PHOTOMETRIC_MINISBLACK || |
2955 | 0 | img->photometric == PHOTOMETRIC_MINISWHITE)) |
2956 | 0 | { |
2957 | | /* |
2958 | | * Use photometric mapping table to construct |
2959 | | * unpacking tables for samples <= 8 bits. |
2960 | | */ |
2961 | 0 | if (!makebwmap(img)) |
2962 | 0 | return (0); |
2963 | | /* no longer need Map, free it */ |
2964 | 0 | _TIFFfreeExt(img->tif, img->Map); |
2965 | 0 | img->Map = NULL; |
2966 | 0 | } |
2967 | 0 | return (1); |
2968 | 0 | } |
2969 | | |
2970 | | static int checkcmap(TIFFRGBAImage *img) |
2971 | 0 | { |
2972 | 0 | uint16_t *r = img->redcmap; |
2973 | 0 | uint16_t *g = img->greencmap; |
2974 | 0 | uint16_t *b = img->bluecmap; |
2975 | 0 | long n = 1L << img->bitspersample; |
2976 | |
|
2977 | 0 | while (n-- > 0) |
2978 | 0 | if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256) |
2979 | 0 | return (16); |
2980 | 0 | return (8); |
2981 | 0 | } |
2982 | | |
2983 | | static void cvtcmap(TIFFRGBAImage *img) |
2984 | 0 | { |
2985 | 0 | uint16_t *r = img->redcmap; |
2986 | 0 | uint16_t *g = img->greencmap; |
2987 | 0 | uint16_t *b = img->bluecmap; |
2988 | 0 | long i; |
2989 | |
|
2990 | 0 | for (i = (1L << img->bitspersample) - 1; i >= 0; i--) |
2991 | 0 | { |
2992 | 0 | #define CVT(x) ((uint16_t)((x) >> 8)) |
2993 | 0 | r[i] = CVT(r[i]); |
2994 | 0 | g[i] = CVT(g[i]); |
2995 | 0 | b[i] = CVT(b[i]); |
2996 | 0 | #undef CVT |
2997 | 0 | } |
2998 | 0 | } |
2999 | | |
3000 | | /* |
3001 | | * Palette images with <= 8 bits/sample are handled |
3002 | | * with a table to avoid lots of shifts and masks. The table |
3003 | | * is setup so that put*cmaptile (below) can retrieve 8/bitspersample |
3004 | | * pixel values simply by indexing into the table with one |
3005 | | * number. |
3006 | | */ |
3007 | | static int makecmap(TIFFRGBAImage *img) |
3008 | 0 | { |
3009 | 0 | int bitspersample = img->bitspersample; |
3010 | 0 | int nsamples = 8 / bitspersample; |
3011 | 0 | uint16_t *r = img->redcmap; |
3012 | 0 | uint16_t *g = img->greencmap; |
3013 | 0 | uint16_t *b = img->bluecmap; |
3014 | 0 | uint32_t *p; |
3015 | 0 | int i; |
3016 | |
|
3017 | 0 | img->PALmap = (uint32_t **)_TIFFmallocExt( |
3018 | 0 | img->tif, |
3019 | 0 | (tmsize_t)((size_t)256 * sizeof(uint32_t *) + |
3020 | 0 | ((size_t)256 * (size_t)nsamples * sizeof(uint32_t)))); |
3021 | 0 | if (img->PALmap == NULL) |
3022 | 0 | { |
3023 | 0 | TIFFErrorExtR(img->tif, TIFFFileName(img->tif), |
3024 | 0 | "No space for Palette mapping table"); |
3025 | 0 | return (0); |
3026 | 0 | } |
3027 | 0 | p = (uint32_t *)(img->PALmap + 256); |
3028 | 0 | for (i = 0; i < 256; i++) |
3029 | 0 | { |
3030 | 0 | TIFFRGBValue c; |
3031 | 0 | img->PALmap[i] = p; |
3032 | 0 | #define CMAP(x) \ |
3033 | 0 | c = (TIFFRGBValue)x; \ |
3034 | 0 | *p++ = PACK(r[c] & 0xff, g[c] & 0xff, b[c] & 0xff); |
3035 | 0 | switch (bitspersample) |
3036 | 0 | { |
3037 | 0 | case 1: |
3038 | 0 | CMAP(i >> 7); |
3039 | 0 | CMAP((i >> 6) & 1); |
3040 | 0 | CMAP((i >> 5) & 1); |
3041 | 0 | CMAP((i >> 4) & 1); |
3042 | 0 | CMAP((i >> 3) & 1); |
3043 | 0 | CMAP((i >> 2) & 1); |
3044 | 0 | CMAP((i >> 1) & 1); |
3045 | 0 | CMAP(i & 1); |
3046 | 0 | break; |
3047 | 0 | case 2: |
3048 | 0 | CMAP(i >> 6); |
3049 | 0 | CMAP((i >> 4) & 3); |
3050 | 0 | CMAP((i >> 2) & 3); |
3051 | 0 | CMAP(i & 3); |
3052 | 0 | break; |
3053 | 0 | case 4: |
3054 | 0 | CMAP(i >> 4); |
3055 | 0 | CMAP(i & 0xf); |
3056 | 0 | break; |
3057 | 0 | case 8: |
3058 | 0 | CMAP(i); |
3059 | 0 | break; |
3060 | 0 | default: |
3061 | 0 | break; |
3062 | 0 | } |
3063 | 0 | #undef CMAP |
3064 | 0 | } |
3065 | 0 | return (1); |
3066 | 0 | } |
3067 | | |
3068 | | /* |
3069 | | * Construct any mapping table used |
3070 | | * by the associated put routine. |
3071 | | */ |
3072 | | static int buildMap(TIFFRGBAImage *img) |
3073 | 0 | { |
3074 | 0 | switch (img->photometric) |
3075 | 0 | { |
3076 | 0 | case PHOTOMETRIC_RGB: |
3077 | 0 | case PHOTOMETRIC_YCBCR: |
3078 | 0 | case PHOTOMETRIC_SEPARATED: |
3079 | 0 | if (img->bitspersample == 8) |
3080 | 0 | break; |
3081 | | /* fall through... */ |
3082 | 0 | case PHOTOMETRIC_MINISBLACK: |
3083 | 0 | case PHOTOMETRIC_MINISWHITE: |
3084 | 0 | if (!setupMap(img)) |
3085 | 0 | return (0); |
3086 | 0 | break; |
3087 | 0 | case PHOTOMETRIC_PALETTE: |
3088 | | /* |
3089 | | * Convert 16-bit colormap to 8-bit (unless it looks |
3090 | | * like an old-style 8-bit colormap). |
3091 | | */ |
3092 | 0 | if (checkcmap(img) == 16) |
3093 | 0 | cvtcmap(img); |
3094 | 0 | else |
3095 | 0 | TIFFWarningExtR(img->tif, TIFFFileName(img->tif), |
3096 | 0 | "Assuming 8-bit colormap"); |
3097 | | /* |
3098 | | * Use mapping table and colormap to construct |
3099 | | * unpacking tables for samples < 8 bits. |
3100 | | */ |
3101 | 0 | if (img->bitspersample <= 8 && !makecmap(img)) |
3102 | 0 | return (0); |
3103 | 0 | break; |
3104 | 0 | default: |
3105 | 0 | break; |
3106 | 0 | } |
3107 | 0 | return (1); |
3108 | 0 | } |
3109 | | |
3110 | | /* |
3111 | | * Select the appropriate conversion routine for packed data. |
3112 | | */ |
3113 | | static int PickContigCase(TIFFRGBAImage *img) |
3114 | 0 | { |
3115 | 0 | img->get = TIFFIsTiled(img->tif) ? gtTileContig : gtStripContig; |
3116 | 0 | img->put.contig = NULL; |
3117 | 0 | switch (img->photometric) |
3118 | 0 | { |
3119 | 0 | case PHOTOMETRIC_RGB: |
3120 | 0 | switch (img->bitspersample) |
3121 | 0 | { |
3122 | 0 | case 8: |
3123 | 0 | if (img->alpha == EXTRASAMPLE_ASSOCALPHA && |
3124 | 0 | img->samplesperpixel >= 4) |
3125 | 0 | img->put.contig = putRGBAAcontig8bittile; |
3126 | 0 | else if (img->alpha == EXTRASAMPLE_UNASSALPHA && |
3127 | 0 | img->samplesperpixel >= 4) |
3128 | 0 | { |
3129 | 0 | if (BuildMapUaToAa(img)) |
3130 | 0 | img->put.contig = putRGBUAcontig8bittile; |
3131 | 0 | } |
3132 | 0 | else if (img->samplesperpixel >= 3) |
3133 | 0 | img->put.contig = putRGBcontig8bittile; |
3134 | 0 | break; |
3135 | 0 | case 16: |
3136 | 0 | if (img->alpha == EXTRASAMPLE_ASSOCALPHA && |
3137 | 0 | img->samplesperpixel >= 4) |
3138 | 0 | { |
3139 | 0 | if (BuildMapBitdepth16To8(img)) |
3140 | 0 | img->put.contig = putRGBAAcontig16bittile; |
3141 | 0 | } |
3142 | 0 | else if (img->alpha == EXTRASAMPLE_UNASSALPHA && |
3143 | 0 | img->samplesperpixel >= 4) |
3144 | 0 | { |
3145 | 0 | if (BuildMapBitdepth16To8(img) && BuildMapUaToAa(img)) |
3146 | 0 | img->put.contig = putRGBUAcontig16bittile; |
3147 | 0 | } |
3148 | 0 | else if (img->samplesperpixel >= 3) |
3149 | 0 | { |
3150 | 0 | if (BuildMapBitdepth16To8(img)) |
3151 | 0 | img->put.contig = putRGBcontig16bittile; |
3152 | 0 | } |
3153 | 0 | break; |
3154 | 0 | default: |
3155 | 0 | break; |
3156 | 0 | } |
3157 | 0 | break; |
3158 | 0 | case PHOTOMETRIC_SEPARATED: |
3159 | 0 | if (img->samplesperpixel >= 4 && buildMap(img)) |
3160 | 0 | { |
3161 | 0 | if (img->bitspersample == 8) |
3162 | 0 | { |
3163 | 0 | if (!img->Map) |
3164 | 0 | img->put.contig = putRGBcontig8bitCMYKtile; |
3165 | 0 | else |
3166 | 0 | img->put.contig = putRGBcontig8bitCMYKMaptile; |
3167 | 0 | } |
3168 | 0 | } |
3169 | 0 | break; |
3170 | 0 | case PHOTOMETRIC_PALETTE: |
3171 | 0 | if (buildMap(img)) |
3172 | 0 | { |
3173 | 0 | switch (img->bitspersample) |
3174 | 0 | { |
3175 | 0 | case 8: |
3176 | 0 | img->put.contig = put8bitcmaptile; |
3177 | 0 | break; |
3178 | 0 | case 4: |
3179 | 0 | img->put.contig = put4bitcmaptile; |
3180 | 0 | break; |
3181 | 0 | case 2: |
3182 | 0 | img->put.contig = put2bitcmaptile; |
3183 | 0 | break; |
3184 | 0 | case 1: |
3185 | 0 | img->put.contig = put1bitcmaptile; |
3186 | 0 | break; |
3187 | 0 | default: |
3188 | 0 | break; |
3189 | 0 | } |
3190 | 0 | } |
3191 | 0 | break; |
3192 | 0 | case PHOTOMETRIC_MINISWHITE: |
3193 | 0 | case PHOTOMETRIC_MINISBLACK: |
3194 | 0 | if (buildMap(img)) |
3195 | 0 | { |
3196 | 0 | switch (img->bitspersample) |
3197 | 0 | { |
3198 | 0 | case 16: |
3199 | 0 | img->put.contig = put16bitbwtile; |
3200 | 0 | break; |
3201 | 0 | case 8: |
3202 | 0 | if (img->alpha && img->samplesperpixel == 2) |
3203 | 0 | img->put.contig = putagreytile; |
3204 | 0 | else |
3205 | 0 | img->put.contig = putgreytile; |
3206 | 0 | break; |
3207 | 0 | case 4: |
3208 | 0 | img->put.contig = put4bitbwtile; |
3209 | 0 | break; |
3210 | 0 | case 2: |
3211 | 0 | img->put.contig = put2bitbwtile; |
3212 | 0 | break; |
3213 | 0 | case 1: |
3214 | 0 | img->put.contig = put1bitbwtile; |
3215 | 0 | break; |
3216 | 0 | default: |
3217 | 0 | break; |
3218 | 0 | } |
3219 | 0 | } |
3220 | 0 | break; |
3221 | 0 | case PHOTOMETRIC_YCBCR: |
3222 | 0 | if ((img->bitspersample == 8) && (img->samplesperpixel == 3)) |
3223 | 0 | { |
3224 | 0 | if (initYCbCrConversion(img) != 0) |
3225 | 0 | { |
3226 | | /* |
3227 | | * The 6.0 spec says that subsampling must be |
3228 | | * one of 1, 2, or 4, and that vertical subsampling |
3229 | | * must always be <= horizontal subsampling; so |
3230 | | * there are only a few possibilities and we just |
3231 | | * enumerate the cases. |
3232 | | * Joris: added support for the [1,2] case, nonetheless, to |
3233 | | * accommodate some OJPEG files |
3234 | | */ |
3235 | 0 | uint16_t SubsamplingHor; |
3236 | 0 | uint16_t SubsamplingVer; |
3237 | 0 | TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, |
3238 | 0 | &SubsamplingHor, &SubsamplingVer); |
3239 | | /* Validate that the image dimensions are compatible with |
3240 | | the subsampling block. All putcontig8bitYCbCrXYtile routines |
3241 | | assume width >= X and height >= Y. */ |
3242 | 0 | if (img->width < SubsamplingHor || |
3243 | 0 | img->height < SubsamplingVer) |
3244 | 0 | { |
3245 | 0 | TIFFErrorExtR(img->tif, TIFFFileName(img->tif), |
3246 | 0 | "YCbCr subsampling (%u,%u) incompatible " |
3247 | 0 | "with image size %ux%u", |
3248 | 0 | SubsamplingHor, SubsamplingVer, |
3249 | 0 | img->width, img->height); |
3250 | 0 | return (0); |
3251 | 0 | } |
3252 | 0 | switch ((SubsamplingHor << 4) | SubsamplingVer) |
3253 | 0 | { |
3254 | 0 | case 0x44: |
3255 | 0 | img->put.contig = putcontig8bitYCbCr44tile; |
3256 | 0 | break; |
3257 | 0 | case 0x42: |
3258 | 0 | img->put.contig = putcontig8bitYCbCr42tile; |
3259 | 0 | break; |
3260 | 0 | case 0x41: |
3261 | 0 | img->put.contig = putcontig8bitYCbCr41tile; |
3262 | 0 | break; |
3263 | 0 | case 0x22: |
3264 | 0 | img->put.contig = putcontig8bitYCbCr22tile; |
3265 | 0 | break; |
3266 | 0 | case 0x21: |
3267 | 0 | img->put.contig = putcontig8bitYCbCr21tile; |
3268 | 0 | break; |
3269 | 0 | case 0x12: |
3270 | 0 | img->put.contig = putcontig8bitYCbCr12tile; |
3271 | 0 | break; |
3272 | 0 | case 0x11: |
3273 | 0 | img->put.contig = putcontig8bitYCbCr11tile; |
3274 | 0 | break; |
3275 | 0 | default: |
3276 | 0 | break; |
3277 | 0 | } |
3278 | 0 | } |
3279 | 0 | } |
3280 | 0 | break; |
3281 | 0 | case PHOTOMETRIC_CIELAB: |
3282 | 0 | if (img->samplesperpixel == 3 && buildMap(img)) |
3283 | 0 | { |
3284 | 0 | if (img->bitspersample == 8 || img->bitspersample == 16) |
3285 | 0 | img->put.contig = initCIELabConversion(img); |
3286 | 0 | break; |
3287 | 0 | } |
3288 | 0 | break; |
3289 | 0 | default: |
3290 | 0 | break; |
3291 | 0 | } |
3292 | 0 | return ((img->get != NULL) && (img->put.contig != NULL)); |
3293 | 0 | } |
3294 | | |
3295 | | /* |
3296 | | * Select the appropriate conversion routine for unpacked data. |
3297 | | * |
3298 | | * NB: we assume that unpacked single channel data is directed |
3299 | | * to the "packed routines. |
3300 | | */ |
3301 | | static int PickSeparateCase(TIFFRGBAImage *img) |
3302 | 0 | { |
3303 | 0 | img->get = TIFFIsTiled(img->tif) ? gtTileSeparate : gtStripSeparate; |
3304 | 0 | img->put.separate = NULL; |
3305 | 0 | switch (img->photometric) |
3306 | 0 | { |
3307 | 0 | case PHOTOMETRIC_MINISWHITE: |
3308 | 0 | case PHOTOMETRIC_MINISBLACK: |
3309 | | /* greyscale images processed pretty much as RGB by gtTileSeparate |
3310 | | */ |
3311 | 0 | case PHOTOMETRIC_RGB: |
3312 | 0 | switch (img->bitspersample) |
3313 | 0 | { |
3314 | 0 | case 8: |
3315 | 0 | if (img->alpha == EXTRASAMPLE_ASSOCALPHA) |
3316 | 0 | img->put.separate = putRGBAAseparate8bittile; |
3317 | 0 | else if (img->alpha == EXTRASAMPLE_UNASSALPHA) |
3318 | 0 | { |
3319 | 0 | if (BuildMapUaToAa(img)) |
3320 | 0 | img->put.separate = putRGBUAseparate8bittile; |
3321 | 0 | } |
3322 | 0 | else |
3323 | 0 | img->put.separate = putRGBseparate8bittile; |
3324 | 0 | break; |
3325 | 0 | case 16: |
3326 | 0 | if (img->alpha == EXTRASAMPLE_ASSOCALPHA) |
3327 | 0 | { |
3328 | 0 | if (BuildMapBitdepth16To8(img)) |
3329 | 0 | img->put.separate = putRGBAAseparate16bittile; |
3330 | 0 | } |
3331 | 0 | else if (img->alpha == EXTRASAMPLE_UNASSALPHA) |
3332 | 0 | { |
3333 | 0 | if (BuildMapBitdepth16To8(img) && BuildMapUaToAa(img)) |
3334 | 0 | img->put.separate = putRGBUAseparate16bittile; |
3335 | 0 | } |
3336 | 0 | else |
3337 | 0 | { |
3338 | 0 | if (BuildMapBitdepth16To8(img)) |
3339 | 0 | img->put.separate = putRGBseparate16bittile; |
3340 | 0 | } |
3341 | 0 | break; |
3342 | 0 | default: |
3343 | 0 | break; |
3344 | 0 | } |
3345 | 0 | break; |
3346 | 0 | case PHOTOMETRIC_SEPARATED: |
3347 | 0 | if (img->bitspersample == 8 && img->samplesperpixel == 4) |
3348 | 0 | { |
3349 | | /* Not alpha, but seems like the only way to get 4th band */ |
3350 | 0 | img->alpha = 1; |
3351 | 0 | img->put.separate = putCMYKseparate8bittile; |
3352 | 0 | } |
3353 | 0 | break; |
3354 | 0 | case PHOTOMETRIC_YCBCR: |
3355 | 0 | if ((img->bitspersample == 8) && (img->samplesperpixel == 3)) |
3356 | 0 | { |
3357 | 0 | if (initYCbCrConversion(img) != 0) |
3358 | 0 | { |
3359 | 0 | uint16_t hs, vs; |
3360 | 0 | TIFFGetFieldDefaulted(img->tif, TIFFTAG_YCBCRSUBSAMPLING, |
3361 | 0 | &hs, &vs); |
3362 | 0 | switch ((hs << 4) | vs) |
3363 | 0 | { |
3364 | 0 | case 0x11: |
3365 | 0 | img->put.separate = putseparate8bitYCbCr11tile; |
3366 | 0 | break; |
3367 | | /* TODO: add other cases here */ |
3368 | 0 | default: |
3369 | 0 | break; |
3370 | 0 | } |
3371 | 0 | } |
3372 | 0 | } |
3373 | 0 | break; |
3374 | 0 | default: |
3375 | 0 | break; |
3376 | 0 | } |
3377 | 0 | return ((img->get != NULL) && (img->put.separate != NULL)); |
3378 | 0 | } |
3379 | | |
3380 | | static int BuildMapUaToAa(TIFFRGBAImage *img) |
3381 | 0 | { |
3382 | 0 | static const char module[] = "BuildMapUaToAa"; |
3383 | 0 | uint8_t *m; |
3384 | 0 | uint16_t na, nv; |
3385 | 0 | assert(img->UaToAa == NULL); |
3386 | 0 | img->UaToAa = (uint8_t *)_TIFFmallocExt(img->tif, 65536); |
3387 | 0 | if (img->UaToAa == NULL) |
3388 | 0 | { |
3389 | 0 | TIFFErrorExtR(img->tif, module, "Out of memory"); |
3390 | 0 | return (0); |
3391 | 0 | } |
3392 | 0 | m = img->UaToAa; |
3393 | 0 | for (na = 0; na < 256; na++) |
3394 | 0 | { |
3395 | 0 | for (nv = 0; nv < 256; nv++) |
3396 | 0 | *m++ = (uint8_t)((nv * na + 127) / 255); |
3397 | 0 | } |
3398 | 0 | return (1); |
3399 | 0 | } |
3400 | | |
3401 | | static int BuildMapBitdepth16To8(TIFFRGBAImage *img) |
3402 | 0 | { |
3403 | 0 | static const char module[] = "BuildMapBitdepth16To8"; |
3404 | 0 | uint8_t *m; |
3405 | 0 | uint32_t n; |
3406 | 0 | assert(img->Bitdepth16To8 == NULL); |
3407 | 0 | img->Bitdepth16To8 = (uint8_t *)_TIFFmallocExt(img->tif, 65536); |
3408 | 0 | if (img->Bitdepth16To8 == NULL) |
3409 | 0 | { |
3410 | 0 | TIFFErrorExtR(img->tif, module, "Out of memory"); |
3411 | 0 | return (0); |
3412 | 0 | } |
3413 | 0 | m = img->Bitdepth16To8; |
3414 | 0 | for (n = 0; n < 65536; n++) |
3415 | 0 | *m++ = (uint8_t)((n + 128) / 257); |
3416 | 0 | return (1); |
3417 | 0 | } |
3418 | | |
3419 | | /* |
3420 | | * Read a whole strip off data from the file, and convert to RGBA form. |
3421 | | * If this is the last strip, then it will only contain the portion of |
3422 | | * the strip that is actually within the image space. The result is |
3423 | | * organized in bottom to top form. |
3424 | | */ |
3425 | | |
3426 | | int TIFFReadRGBAStrip(TIFF *tif, uint32_t row, uint32_t *raster) |
3427 | | |
3428 | 0 | { |
3429 | 0 | return TIFFReadRGBAStripExt(tif, row, raster, 0); |
3430 | 0 | } |
3431 | | |
3432 | | int TIFFReadRGBAStripExt(TIFF *tif, uint32_t row, uint32_t *raster, |
3433 | | int stop_on_error) |
3434 | | |
3435 | 0 | { |
3436 | 0 | char emsg[EMSG_BUF_SIZE] = ""; |
3437 | 0 | TIFFRGBAImage img; |
3438 | 0 | int ok; |
3439 | 0 | uint32_t rowsperstrip, rows_to_read; |
3440 | |
|
3441 | 0 | if (TIFFIsTiled(tif)) |
3442 | 0 | { |
3443 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
3444 | 0 | "Can't use TIFFReadRGBAStrip() with tiled file."); |
3445 | 0 | return (0); |
3446 | 0 | } |
3447 | | |
3448 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &rowsperstrip); |
3449 | |
|
3450 | 0 | if (rowsperstrip == 0) |
3451 | 0 | { |
3452 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "rowsperstrip is zero"); |
3453 | 0 | return (0); |
3454 | 0 | } |
3455 | | |
3456 | 0 | if ((row % rowsperstrip) != 0) |
3457 | 0 | { |
3458 | 0 | TIFFErrorExtR( |
3459 | 0 | tif, TIFFFileName(tif), |
3460 | 0 | "Row passed to TIFFReadRGBAStrip() must be first in a strip."); |
3461 | 0 | return (0); |
3462 | 0 | } |
3463 | | |
3464 | 0 | if (TIFFRGBAImageBegin(&img, tif, stop_on_error, emsg)) |
3465 | 0 | { |
3466 | 0 | if (row >= img.height) |
3467 | 0 | { |
3468 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
3469 | 0 | "Invalid row passed to TIFFReadRGBAStrip()."); |
3470 | 0 | TIFFRGBAImageEnd(&img); |
3471 | 0 | return (0); |
3472 | 0 | } |
3473 | | |
3474 | 0 | img.row_offset = (int)row; |
3475 | 0 | img.col_offset = 0; |
3476 | |
|
3477 | 0 | if (row + rowsperstrip > img.height) |
3478 | 0 | rows_to_read = img.height - row; |
3479 | 0 | else |
3480 | 0 | rows_to_read = rowsperstrip; |
3481 | |
|
3482 | 0 | ok = TIFFRGBAImageGet(&img, raster, img.width, rows_to_read); |
3483 | |
|
3484 | 0 | TIFFRGBAImageEnd(&img); |
3485 | 0 | } |
3486 | 0 | else |
3487 | 0 | { |
3488 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", emsg); |
3489 | 0 | ok = 0; |
3490 | 0 | } |
3491 | | |
3492 | 0 | return (ok); |
3493 | 0 | } |
3494 | | |
3495 | | /* |
3496 | | * Read a whole tile off data from the file, and convert to RGBA form. |
3497 | | * The returned RGBA data is organized from bottom to top of tile, |
3498 | | * and may include zeroed areas if the tile extends off the image. |
3499 | | */ |
3500 | | |
3501 | | int TIFFReadRGBATile(TIFF *tif, uint32_t col, uint32_t row, uint32_t *raster) |
3502 | | |
3503 | 0 | { |
3504 | 0 | return TIFFReadRGBATileExt(tif, col, row, raster, 0); |
3505 | 0 | } |
3506 | | |
3507 | | int TIFFReadRGBATileExt(TIFF *tif, uint32_t col, uint32_t row, uint32_t *raster, |
3508 | | int stop_on_error) |
3509 | 0 | { |
3510 | 0 | char emsg[EMSG_BUF_SIZE] = ""; |
3511 | 0 | TIFFRGBAImage img; |
3512 | 0 | int ok; |
3513 | 0 | uint32_t tile_xsize, tile_ysize; |
3514 | 0 | uint32_t read_xsize, read_ysize; |
3515 | 0 | uint32_t i_row; |
3516 | | |
3517 | | /* |
3518 | | * Verify that our request is legal - on a tile file, and on a |
3519 | | * tile boundary. |
3520 | | */ |
3521 | |
|
3522 | 0 | if (!TIFFIsTiled(tif)) |
3523 | 0 | { |
3524 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
3525 | 0 | "Can't use TIFFReadRGBATile() with striped file."); |
3526 | 0 | return (0); |
3527 | 0 | } |
3528 | | |
3529 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_TILEWIDTH, &tile_xsize); |
3530 | 0 | TIFFGetFieldDefaulted(tif, TIFFTAG_TILELENGTH, &tile_ysize); |
3531 | 0 | if (tile_xsize == 0 || tile_ysize == 0) |
3532 | 0 | { |
3533 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
3534 | 0 | "tile_xsize or tile_ysize is zero"); |
3535 | 0 | return (0); |
3536 | 0 | } |
3537 | | |
3538 | 0 | if ((col % tile_xsize) != 0 || (row % tile_ysize) != 0) |
3539 | 0 | { |
3540 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
3541 | 0 | "Row/col passed to TIFFReadRGBATile() must be top" |
3542 | 0 | "left corner of a tile."); |
3543 | 0 | return (0); |
3544 | 0 | } |
3545 | | |
3546 | | /* |
3547 | | * Setup the RGBA reader. |
3548 | | */ |
3549 | | |
3550 | 0 | if (!TIFFRGBAImageBegin(&img, tif, stop_on_error, emsg)) |
3551 | 0 | { |
3552 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), "%s", emsg); |
3553 | 0 | return (0); |
3554 | 0 | } |
3555 | | |
3556 | 0 | if (col >= img.width || row >= img.height) |
3557 | 0 | { |
3558 | 0 | TIFFErrorExtR(tif, TIFFFileName(tif), |
3559 | 0 | "Invalid row/col passed to TIFFReadRGBATile()."); |
3560 | 0 | TIFFRGBAImageEnd(&img); |
3561 | 0 | return (0); |
3562 | 0 | } |
3563 | | |
3564 | | /* |
3565 | | * The TIFFRGBAImageGet() function doesn't allow us to get off the |
3566 | | * edge of the image, even to fill an otherwise valid tile. So we |
3567 | | * figure out how much we can read, and fix up the tile buffer to |
3568 | | * a full tile configuration afterwards. |
3569 | | */ |
3570 | | |
3571 | 0 | if (row + tile_ysize > img.height) |
3572 | 0 | read_ysize = img.height - row; |
3573 | 0 | else |
3574 | 0 | read_ysize = tile_ysize; |
3575 | |
|
3576 | 0 | if (col + tile_xsize > img.width) |
3577 | 0 | read_xsize = img.width - col; |
3578 | 0 | else |
3579 | 0 | read_xsize = tile_xsize; |
3580 | | |
3581 | | /* |
3582 | | * Read the chunk of imagery. |
3583 | | */ |
3584 | |
|
3585 | 0 | img.row_offset = (int)row; |
3586 | 0 | img.col_offset = (int)col; |
3587 | |
|
3588 | 0 | ok = TIFFRGBAImageGet(&img, raster, read_xsize, read_ysize); |
3589 | |
|
3590 | 0 | TIFFRGBAImageEnd(&img); |
3591 | | |
3592 | | /* |
3593 | | * If our read was incomplete we will need to fix up the tile by |
3594 | | * shifting the data around as if a full tile of data is being returned. |
3595 | | * |
3596 | | * This is all the more complicated because the image is organized in |
3597 | | * bottom to top format. |
3598 | | */ |
3599 | |
|
3600 | 0 | if (read_xsize == tile_xsize && read_ysize == tile_ysize) |
3601 | 0 | return (ok); |
3602 | | |
3603 | 0 | for (i_row = 0; i_row < read_ysize; i_row++) |
3604 | 0 | { |
3605 | 0 | memmove(raster + (size_t)(tile_ysize - i_row - 1) * tile_xsize, |
3606 | 0 | raster + (size_t)(read_ysize - i_row - 1) * read_xsize, |
3607 | 0 | read_xsize * sizeof(uint32_t)); |
3608 | 0 | _TIFFmemset( |
3609 | 0 | raster + (size_t)(tile_ysize - i_row - 1) * tile_xsize + read_xsize, |
3610 | 0 | 0, |
3611 | 0 | (tmsize_t)(sizeof(uint32_t) * (size_t)(tile_xsize - read_xsize))); |
3612 | 0 | } |
3613 | |
|
3614 | 0 | for (i_row = read_ysize; i_row < tile_ysize; i_row++) |
3615 | 0 | { |
3616 | 0 | _TIFFmemset(raster + (size_t)(tile_ysize - i_row - 1) * tile_xsize, 0, |
3617 | 0 | (tmsize_t)(sizeof(uint32_t) * (size_t)tile_xsize)); |
3618 | 0 | } |
3619 | |
|
3620 | 0 | return (ok); |
3621 | 0 | } |