1 //---------------------------------------------------------------------------------
2 //
3 // Little Color Management System
4 // Copyright (c) 1998-2020 Marti Maria Saguer
5 //
6 // Permission is hereby granted, free of charge, to any person obtaining
7 // a copy of this software and associated documentation files (the "Software"),
8 // to deal in the Software without restriction, including without limitation
9 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 // and/or sell copies of the Software, and to permit persons to whom the Software
11 // is furnished to do so, subject to the following conditions:
12 //
13 // The above copyright notice and this permission notice shall be included in
14 // all copies or substantial portions of the Software.
15 //
16 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
17 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
18 // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
19 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
20 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
21 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
22 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
23 //
24 //---------------------------------------------------------------------------------
25 //
26
27 #include "lcms2_internal.h"
28
29 // Generic I/O, tag dictionary management, profile struct
30
31 // IOhandlers are abstractions used by littleCMS to read from whatever file, stream,
32 // memory block or any storage. Each IOhandler provides implementations for read,
33 // write, seek and tell functions. LittleCMS code deals with IO across those objects.
34 // In this way, is easier to add support for new storage media.
35
36 // NULL stream, for taking care of used space -------------------------------------
37
38 // NULL IOhandler basically does nothing but keep track on how many bytes have been
39 // written. This is handy when creating profiles, where the file size is needed in the
40 // header. Then, whole profile is serialized across NULL IOhandler and a second pass
41 // writes the bytes to the pertinent IOhandler.
42
43 typedef struct {
44 cmsUInt32Number Pointer; // Points to current location
45 } FILENULL;
46
47 static
NULLRead(cmsIOHANDLER * iohandler,void * Buffer,cmsUInt32Number size,cmsUInt32Number count)48 cmsUInt32Number NULLRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
49 {
50 FILENULL* ResData = (FILENULL*) iohandler ->stream;
51
52 cmsUInt32Number len = size * count;
53 ResData -> Pointer += len;
54 return count;
55
56 cmsUNUSED_PARAMETER(Buffer);
57 }
58
59 static
NULLSeek(cmsIOHANDLER * iohandler,cmsUInt32Number offset)60 cmsBool NULLSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
61 {
62 FILENULL* ResData = (FILENULL*) iohandler ->stream;
63
64 ResData ->Pointer = offset;
65 return TRUE;
66 }
67
68 static
NULLTell(cmsIOHANDLER * iohandler)69 cmsUInt32Number NULLTell(cmsIOHANDLER* iohandler)
70 {
71 FILENULL* ResData = (FILENULL*) iohandler ->stream;
72 return ResData -> Pointer;
73 }
74
75 static
NULLWrite(cmsIOHANDLER * iohandler,cmsUInt32Number size,const void * Ptr)76 cmsBool NULLWrite(cmsIOHANDLER* iohandler, cmsUInt32Number size, const void *Ptr)
77 {
78 FILENULL* ResData = (FILENULL*) iohandler ->stream;
79
80 ResData ->Pointer += size;
81 if (ResData ->Pointer > iohandler->UsedSpace)
82 iohandler->UsedSpace = ResData ->Pointer;
83
84 return TRUE;
85
86 cmsUNUSED_PARAMETER(Ptr);
87 }
88
89 static
NULLClose(cmsIOHANDLER * iohandler)90 cmsBool NULLClose(cmsIOHANDLER* iohandler)
91 {
92 FILENULL* ResData = (FILENULL*) iohandler ->stream;
93
94 _cmsFree(iohandler ->ContextID, ResData);
95 _cmsFree(iohandler ->ContextID, iohandler);
96 return TRUE;
97 }
98
99 // The NULL IOhandler creator
cmsOpenIOhandlerFromNULL(cmsContext ContextID)100 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromNULL(cmsContext ContextID)
101 {
102 struct _cms_io_handler* iohandler = NULL;
103 FILENULL* fm = NULL;
104
105 iohandler = (struct _cms_io_handler*) _cmsMallocZero(ContextID, sizeof(struct _cms_io_handler));
106 if (iohandler == NULL) return NULL;
107
108 fm = (FILENULL*) _cmsMallocZero(ContextID, sizeof(FILENULL));
109 if (fm == NULL) goto Error;
110
111 fm ->Pointer = 0;
112
113 iohandler ->ContextID = ContextID;
114 iohandler ->stream = (void*) fm;
115 iohandler ->UsedSpace = 0;
116 iohandler ->ReportedSize = 0;
117 iohandler ->PhysicalFile[0] = 0;
118
119 iohandler ->Read = NULLRead;
120 iohandler ->Seek = NULLSeek;
121 iohandler ->Close = NULLClose;
122 iohandler ->Tell = NULLTell;
123 iohandler ->Write = NULLWrite;
124
125 return iohandler;
126
127 Error:
128 if (iohandler) _cmsFree(ContextID, iohandler);
129 return NULL;
130
131 }
132
133
134 // Memory-based stream --------------------------------------------------------------
135
136 // Those functions implements an iohandler which takes a block of memory as storage medium.
137
138 typedef struct {
139 cmsUInt8Number* Block; // Points to allocated memory
140 cmsUInt32Number Size; // Size of allocated memory
141 cmsUInt32Number Pointer; // Points to current location
142 int FreeBlockOnClose; // As title
143
144 } FILEMEM;
145
146 static
MemoryRead(struct _cms_io_handler * iohandler,void * Buffer,cmsUInt32Number size,cmsUInt32Number count)147 cmsUInt32Number MemoryRead(struct _cms_io_handler* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
148 {
149 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
150 cmsUInt8Number* Ptr;
151 cmsUInt32Number len = size * count;
152
153 if (ResData -> Pointer + len > ResData -> Size){
154
155 len = (ResData -> Size - ResData -> Pointer);
156 cmsSignalError(iohandler ->ContextID, cmsERROR_READ, "Read from memory error. Got %d bytes, block should be of %d bytes", len, count * size);
157 return 0;
158 }
159
160 Ptr = ResData -> Block;
161 Ptr += ResData -> Pointer;
162 memmove(Buffer, Ptr, len);
163 ResData -> Pointer += len;
164
165 return count;
166 }
167
168 // SEEK_CUR is assumed
169 static
MemorySeek(struct _cms_io_handler * iohandler,cmsUInt32Number offset)170 cmsBool MemorySeek(struct _cms_io_handler* iohandler, cmsUInt32Number offset)
171 {
172 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
173
174 if (offset > ResData ->Size) {
175 cmsSignalError(iohandler ->ContextID, cmsERROR_SEEK, "Too few data; probably corrupted profile");
176 return FALSE;
177 }
178
179 ResData ->Pointer = offset;
180 return TRUE;
181 }
182
183 // Tell for memory
184 static
MemoryTell(struct _cms_io_handler * iohandler)185 cmsUInt32Number MemoryTell(struct _cms_io_handler* iohandler)
186 {
187 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
188
189 if (ResData == NULL) return 0;
190 return ResData -> Pointer;
191 }
192
193
194 // Writes data to memory, also keeps used space for further reference.
195 static
MemoryWrite(struct _cms_io_handler * iohandler,cmsUInt32Number size,const void * Ptr)196 cmsBool MemoryWrite(struct _cms_io_handler* iohandler, cmsUInt32Number size, const void *Ptr)
197 {
198 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
199
200 if (ResData == NULL) return FALSE; // Housekeeping
201
202 // Check for available space. Clip.
203 if (ResData->Pointer + size > ResData->Size) {
204 size = ResData ->Size - ResData->Pointer;
205 }
206
207 if (size == 0) return TRUE; // Write zero bytes is ok, but does nothing
208
209 memmove(ResData ->Block + ResData ->Pointer, Ptr, size);
210 ResData ->Pointer += size;
211
212 if (ResData ->Pointer > iohandler->UsedSpace)
213 iohandler->UsedSpace = ResData ->Pointer;
214
215 return TRUE;
216 }
217
218
219 static
MemoryClose(struct _cms_io_handler * iohandler)220 cmsBool MemoryClose(struct _cms_io_handler* iohandler)
221 {
222 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
223
224 if (ResData ->FreeBlockOnClose) {
225
226 if (ResData ->Block) _cmsFree(iohandler ->ContextID, ResData ->Block);
227 }
228
229 _cmsFree(iohandler ->ContextID, ResData);
230 _cmsFree(iohandler ->ContextID, iohandler);
231
232 return TRUE;
233 }
234
235 // Create a iohandler for memory block. AccessMode=='r' assumes the iohandler is going to read, and makes
236 // a copy of the memory block for letting user to free the memory after invoking open profile. In write
237 // mode ("w"), Buffer points to the begin of memory block to be written.
cmsOpenIOhandlerFromMem(cmsContext ContextID,void * Buffer,cmsUInt32Number size,const char * AccessMode)238 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromMem(cmsContext ContextID, void *Buffer, cmsUInt32Number size, const char* AccessMode)
239 {
240 cmsIOHANDLER* iohandler = NULL;
241 FILEMEM* fm = NULL;
242
243 _cmsAssert(AccessMode != NULL);
244
245 iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
246 if (iohandler == NULL) return NULL;
247
248 switch (*AccessMode) {
249
250 case 'r':
251 fm = (FILEMEM*) _cmsMallocZero(ContextID, sizeof(FILEMEM));
252 if (fm == NULL) goto Error;
253
254 if (Buffer == NULL) {
255 cmsSignalError(ContextID, cmsERROR_READ, "Couldn't read profile from NULL pointer");
256 goto Error;
257 }
258
259 fm ->Block = (cmsUInt8Number*) _cmsMalloc(ContextID, size);
260 if (fm ->Block == NULL) {
261
262 _cmsFree(ContextID, fm);
263 _cmsFree(ContextID, iohandler);
264 cmsSignalError(ContextID, cmsERROR_READ, "Couldn't allocate %ld bytes for profile", (long) size);
265 return NULL;
266 }
267
268
269 memmove(fm->Block, Buffer, size);
270 fm ->FreeBlockOnClose = TRUE;
271 fm ->Size = size;
272 fm ->Pointer = 0;
273 iohandler -> ReportedSize = size;
274 break;
275
276 case 'w':
277 fm = (FILEMEM*) _cmsMallocZero(ContextID, sizeof(FILEMEM));
278 if (fm == NULL) goto Error;
279
280 fm ->Block = (cmsUInt8Number*) Buffer;
281 fm ->FreeBlockOnClose = FALSE;
282 fm ->Size = size;
283 fm ->Pointer = 0;
284 iohandler -> ReportedSize = 0;
285 break;
286
287 default:
288 cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unknown access mode '%c'", *AccessMode);
289 return NULL;
290 }
291
292 iohandler ->ContextID = ContextID;
293 iohandler ->stream = (void*) fm;
294 iohandler ->UsedSpace = 0;
295 iohandler ->PhysicalFile[0] = 0;
296
297 iohandler ->Read = MemoryRead;
298 iohandler ->Seek = MemorySeek;
299 iohandler ->Close = MemoryClose;
300 iohandler ->Tell = MemoryTell;
301 iohandler ->Write = MemoryWrite;
302
303 return iohandler;
304
305 Error:
306 if (fm) _cmsFree(ContextID, fm);
307 if (iohandler) _cmsFree(ContextID, iohandler);
308 return NULL;
309 }
310
311 // File-based stream -------------------------------------------------------
312
313 // Read count elements of size bytes each. Return number of elements read
314 static
FileRead(cmsIOHANDLER * iohandler,void * Buffer,cmsUInt32Number size,cmsUInt32Number count)315 cmsUInt32Number FileRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
316 {
317 cmsUInt32Number nReaded = (cmsUInt32Number) fread(Buffer, size, count, (FILE*) iohandler->stream);
318
319 if (nReaded != count) {
320 cmsSignalError(iohandler ->ContextID, cmsERROR_FILE, "Read error. Got %d bytes, block should be of %d bytes", nReaded * size, count * size);
321 return 0;
322 }
323
324 return nReaded;
325 }
326
327 // Position file pointer in the file
328 static
FileSeek(cmsIOHANDLER * iohandler,cmsUInt32Number offset)329 cmsBool FileSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
330 {
331 if (fseek((FILE*) iohandler ->stream, (long) offset, SEEK_SET) != 0) {
332
333 cmsSignalError(iohandler ->ContextID, cmsERROR_FILE, "Seek error; probably corrupted file");
334 return FALSE;
335 }
336
337 return TRUE;
338 }
339
340 // Returns file pointer position or 0 on error, which is also a valid position.
341 static
FileTell(cmsIOHANDLER * iohandler)342 cmsUInt32Number FileTell(cmsIOHANDLER* iohandler)
343 {
344 long t = ftell((FILE*)iohandler ->stream);
345 if (t == -1L) {
346 cmsSignalError(iohandler->ContextID, cmsERROR_FILE, "Tell error; probably corrupted file");
347 return 0;
348 }
349
350 return (cmsUInt32Number)t;
351 }
352
353 // Writes data to stream, also keeps used space for further reference. Returns TRUE on success, FALSE on error
354 static
FileWrite(cmsIOHANDLER * iohandler,cmsUInt32Number size,const void * Buffer)355 cmsBool FileWrite(cmsIOHANDLER* iohandler, cmsUInt32Number size, const void* Buffer)
356 {
357 if (size == 0) return TRUE; // We allow to write 0 bytes, but nothing is written
358
359 iohandler->UsedSpace += size;
360 return (fwrite(Buffer, size, 1, (FILE*)iohandler->stream) == 1);
361 }
362
363 // Closes the file
364 static
FileClose(cmsIOHANDLER * iohandler)365 cmsBool FileClose(cmsIOHANDLER* iohandler)
366 {
367 if (fclose((FILE*) iohandler ->stream) != 0) return FALSE;
368 _cmsFree(iohandler ->ContextID, iohandler);
369 return TRUE;
370 }
371
372 // Create a iohandler for disk based files.
cmsOpenIOhandlerFromFile(cmsContext ContextID,const char * FileName,const char * AccessMode)373 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromFile(cmsContext ContextID, const char* FileName, const char* AccessMode)
374 {
375 cmsIOHANDLER* iohandler = NULL;
376 FILE* fm = NULL;
377 cmsInt32Number fileLen;
378
379 _cmsAssert(FileName != NULL);
380 _cmsAssert(AccessMode != NULL);
381
382 iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
383 if (iohandler == NULL) return NULL;
384
385 switch (*AccessMode) {
386
387 case 'r':
388 fm = fopen(FileName, "rb");
389 if (fm == NULL) {
390 _cmsFree(ContextID, iohandler);
391 cmsSignalError(ContextID, cmsERROR_FILE, "File '%s' not found", FileName);
392 return NULL;
393 }
394 fileLen = cmsfilelength(fm);
395 if (fileLen < 0)
396 {
397 fclose(fm);
398 _cmsFree(ContextID, iohandler);
399 cmsSignalError(ContextID, cmsERROR_FILE, "Cannot get size of file '%s'", FileName);
400 return NULL;
401 }
402
403 iohandler -> ReportedSize = (cmsUInt32Number) fileLen;
404 break;
405
406 case 'w':
407 fm = fopen(FileName, "wb");
408 if (fm == NULL) {
409 _cmsFree(ContextID, iohandler);
410 cmsSignalError(ContextID, cmsERROR_FILE, "Couldn't create '%s'", FileName);
411 return NULL;
412 }
413 iohandler -> ReportedSize = 0;
414 break;
415
416 default:
417 _cmsFree(ContextID, iohandler);
418 cmsSignalError(ContextID, cmsERROR_FILE, "Unknown access mode '%c'", *AccessMode);
419 return NULL;
420 }
421
422 iohandler ->ContextID = ContextID;
423 iohandler ->stream = (void*) fm;
424 iohandler ->UsedSpace = 0;
425
426 // Keep track of the original file
427 strncpy(iohandler -> PhysicalFile, FileName, sizeof(iohandler -> PhysicalFile)-1);
428 iohandler -> PhysicalFile[sizeof(iohandler -> PhysicalFile)-1] = 0;
429
430 iohandler ->Read = FileRead;
431 iohandler ->Seek = FileSeek;
432 iohandler ->Close = FileClose;
433 iohandler ->Tell = FileTell;
434 iohandler ->Write = FileWrite;
435
436 return iohandler;
437 }
438
439 // Create a iohandler for stream based files
cmsOpenIOhandlerFromStream(cmsContext ContextID,FILE * Stream)440 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromStream(cmsContext ContextID, FILE* Stream)
441 {
442 cmsIOHANDLER* iohandler = NULL;
443 cmsInt32Number fileSize;
444
445 fileSize = cmsfilelength(Stream);
446 if (fileSize < 0)
447 {
448 cmsSignalError(ContextID, cmsERROR_FILE, "Cannot get size of stream");
449 return NULL;
450 }
451
452 iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
453 if (iohandler == NULL) return NULL;
454
455 iohandler -> ContextID = ContextID;
456 iohandler -> stream = (void*) Stream;
457 iohandler -> UsedSpace = 0;
458 iohandler -> ReportedSize = (cmsUInt32Number) fileSize;
459 iohandler -> PhysicalFile[0] = 0;
460
461 iohandler ->Read = FileRead;
462 iohandler ->Seek = FileSeek;
463 iohandler ->Close = FileClose;
464 iohandler ->Tell = FileTell;
465 iohandler ->Write = FileWrite;
466
467 return iohandler;
468 }
469
470
471
472 // Close an open IO handler
cmsCloseIOhandler(cmsIOHANDLER * io)473 cmsBool CMSEXPORT cmsCloseIOhandler(cmsIOHANDLER* io)
474 {
475 return io -> Close(io);
476 }
477
478 // -------------------------------------------------------------------------------------------------------
479
cmsGetProfileIOhandler(cmsHPROFILE hProfile)480 cmsIOHANDLER* CMSEXPORT cmsGetProfileIOhandler(cmsHPROFILE hProfile)
481 {
482 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*)hProfile;
483
484 if (Icc == NULL) return NULL;
485 return Icc->IOhandler;
486 }
487
488 // Creates an empty structure holding all required parameters
cmsCreateProfilePlaceholder(cmsContext ContextID)489 cmsHPROFILE CMSEXPORT cmsCreateProfilePlaceholder(cmsContext ContextID)
490 {
491 time_t now = time(NULL);
492 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) _cmsMallocZero(ContextID, sizeof(_cmsICCPROFILE));
493 if (Icc == NULL) return NULL;
494
495 Icc ->ContextID = ContextID;
496
497 // Set it to empty
498 Icc -> TagCount = 0;
499
500 // Set default version
501 Icc ->Version = 0x02100000;
502
503 // Set creation date/time
504 memmove(&Icc ->Created, gmtime(&now), sizeof(Icc ->Created));
505
506 // Create a mutex if the user provided proper plugin. NULL otherwise
507 Icc ->UsrMutex = _cmsCreateMutex(ContextID);
508
509 // Return the handle
510 return (cmsHPROFILE) Icc;
511 }
512
cmsGetProfileContextID(cmsHPROFILE hProfile)513 cmsContext CMSEXPORT cmsGetProfileContextID(cmsHPROFILE hProfile)
514 {
515 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
516
517 if (Icc == NULL) return NULL;
518 return Icc -> ContextID;
519 }
520
521
522 // Return the number of tags
cmsGetTagCount(cmsHPROFILE hProfile)523 cmsInt32Number CMSEXPORT cmsGetTagCount(cmsHPROFILE hProfile)
524 {
525 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
526 if (Icc == NULL) return -1;
527
528 return (cmsInt32Number) Icc->TagCount;
529 }
530
531 // Return the tag signature of a given tag number
cmsGetTagSignature(cmsHPROFILE hProfile,cmsUInt32Number n)532 cmsTagSignature CMSEXPORT cmsGetTagSignature(cmsHPROFILE hProfile, cmsUInt32Number n)
533 {
534 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
535
536 if (n > Icc->TagCount) return (cmsTagSignature) 0; // Mark as not available
537 if (n >= MAX_TABLE_TAG) return (cmsTagSignature) 0; // As double check
538
539 return Icc ->TagNames[n];
540 }
541
542
543 static
SearchOneTag(_cmsICCPROFILE * Profile,cmsTagSignature sig)544 int SearchOneTag(_cmsICCPROFILE* Profile, cmsTagSignature sig)
545 {
546 int i;
547
548 for (i=0; i < (int) Profile -> TagCount; i++) {
549
550 if (sig == Profile -> TagNames[i])
551 return i;
552 }
553
554 return -1;
555 }
556
557 // Search for a specific tag in tag dictionary. Returns position or -1 if tag not found.
558 // If followlinks is turned on, then the position of the linked tag is returned
_cmsSearchTag(_cmsICCPROFILE * Icc,cmsTagSignature sig,cmsBool lFollowLinks)559 int _cmsSearchTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, cmsBool lFollowLinks)
560 {
561 int n;
562 cmsTagSignature LinkedSig;
563
564 do {
565
566 // Search for given tag in ICC profile directory
567 n = SearchOneTag(Icc, sig);
568 if (n < 0)
569 return -1; // Not found
570
571 if (!lFollowLinks)
572 return n; // Found, don't follow links
573
574 // Is this a linked tag?
575 LinkedSig = Icc ->TagLinked[n];
576
577 // Yes, follow link
578 if (LinkedSig != (cmsTagSignature) 0) {
579 sig = LinkedSig;
580 }
581
582 } while (LinkedSig != (cmsTagSignature) 0);
583
584 return n;
585 }
586
587 // Deletes a tag entry
588
589 static
_cmsDeleteTagByPos(_cmsICCPROFILE * Icc,int i)590 void _cmsDeleteTagByPos(_cmsICCPROFILE* Icc, int i)
591 {
592 _cmsAssert(Icc != NULL);
593 _cmsAssert(i >= 0);
594
595
596 if (Icc -> TagPtrs[i] != NULL) {
597
598 // Free previous version
599 if (Icc ->TagSaveAsRaw[i]) {
600 _cmsFree(Icc ->ContextID, Icc ->TagPtrs[i]);
601 }
602 else {
603 cmsTagTypeHandler* TypeHandler = Icc ->TagTypeHandlers[i];
604
605 if (TypeHandler != NULL) {
606
607 cmsTagTypeHandler LocalTypeHandler = *TypeHandler;
608 LocalTypeHandler.ContextID = Icc ->ContextID; // As an additional parameter
609 LocalTypeHandler.ICCVersion = Icc ->Version;
610 LocalTypeHandler.FreePtr(&LocalTypeHandler, Icc -> TagPtrs[i]);
611 Icc ->TagPtrs[i] = NULL;
612 }
613 }
614
615 }
616 }
617
618
619 // Creates a new tag entry
620 static
_cmsNewTag(_cmsICCPROFILE * Icc,cmsTagSignature sig,int * NewPos)621 cmsBool _cmsNewTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, int* NewPos)
622 {
623 int i;
624
625 // Search for the tag
626 i = _cmsSearchTag(Icc, sig, FALSE);
627 if (i >= 0) {
628
629 // Already exists? delete it
630 _cmsDeleteTagByPos(Icc, i);
631 *NewPos = i;
632 }
633 else {
634
635 // No, make a new one
636 if (Icc -> TagCount >= MAX_TABLE_TAG) {
637 cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", MAX_TABLE_TAG);
638 return FALSE;
639 }
640
641 *NewPos = (int) Icc ->TagCount;
642 Icc -> TagCount++;
643 }
644
645 return TRUE;
646 }
647
648
649 // Check existence
cmsIsTag(cmsHPROFILE hProfile,cmsTagSignature sig)650 cmsBool CMSEXPORT cmsIsTag(cmsHPROFILE hProfile, cmsTagSignature sig)
651 {
652 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) (void*) hProfile;
653 return _cmsSearchTag(Icc, sig, FALSE) >= 0;
654 }
655
656 // Enforces that the profile version is per. spec.
657 // Operates on the big endian bytes from the profile.
658 // Called before converting to platform endianness.
659 // Byte 0 is BCD major version, so max 9.
660 // Byte 1 is 2 BCD digits, one per nibble.
661 // Reserved bytes 2 & 3 must be 0.
662 static
_validatedVersion(cmsUInt32Number DWord)663 cmsUInt32Number _validatedVersion(cmsUInt32Number DWord)
664 {
665 cmsUInt8Number* pByte = (cmsUInt8Number*) &DWord;
666 cmsUInt8Number temp1;
667 cmsUInt8Number temp2;
668
669 if (*pByte > 0x09) *pByte = (cmsUInt8Number) 0x09;
670 temp1 = (cmsUInt8Number) (*(pByte+1) & 0xf0);
671 temp2 = (cmsUInt8Number) (*(pByte+1) & 0x0f);
672 if (temp1 > 0x90U) temp1 = 0x90U;
673 if (temp2 > 0x09U) temp2 = 0x09U;
674 *(pByte+1) = (cmsUInt8Number)(temp1 | temp2);
675 *(pByte+2) = (cmsUInt8Number)0;
676 *(pByte+3) = (cmsUInt8Number)0;
677
678 return DWord;
679 }
680
681 // Read profile header and validate it
_cmsReadHeader(_cmsICCPROFILE * Icc)682 cmsBool _cmsReadHeader(_cmsICCPROFILE* Icc)
683 {
684 cmsTagEntry Tag;
685 cmsICCHeader Header;
686 cmsUInt32Number i, j;
687 cmsUInt32Number HeaderSize;
688 cmsIOHANDLER* io = Icc ->IOhandler;
689 cmsUInt32Number TagCount;
690
691
692 // Read the header
693 if (io -> Read(io, &Header, sizeof(cmsICCHeader), 1) != 1) {
694 return FALSE;
695 }
696
697 // Validate file as an ICC profile
698 if (_cmsAdjustEndianess32(Header.magic) != cmsMagicNumber) {
699 cmsSignalError(Icc ->ContextID, cmsERROR_BAD_SIGNATURE, "not an ICC profile, invalid signature");
700 return FALSE;
701 }
702
703 // Adjust endianness of the used parameters
704 Icc -> DeviceClass = (cmsProfileClassSignature) _cmsAdjustEndianess32(Header.deviceClass);
705 Icc -> ColorSpace = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Header.colorSpace);
706 Icc -> PCS = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Header.pcs);
707
708 Icc -> RenderingIntent = _cmsAdjustEndianess32(Header.renderingIntent);
709 Icc -> flags = _cmsAdjustEndianess32(Header.flags);
710 Icc -> manufacturer = _cmsAdjustEndianess32(Header.manufacturer);
711 Icc -> model = _cmsAdjustEndianess32(Header.model);
712 Icc -> creator = _cmsAdjustEndianess32(Header.creator);
713
714 _cmsAdjustEndianess64(&Icc -> attributes, &Header.attributes);
715 Icc -> Version = _cmsAdjustEndianess32(_validatedVersion(Header.version));
716
717 // Get size as reported in header
718 HeaderSize = _cmsAdjustEndianess32(Header.size);
719
720 // Make sure HeaderSize is lower than profile size
721 if (HeaderSize >= Icc ->IOhandler ->ReportedSize)
722 HeaderSize = Icc ->IOhandler ->ReportedSize;
723
724
725 // Get creation date/time
726 _cmsDecodeDateTimeNumber(&Header.date, &Icc ->Created);
727
728 // The profile ID are 32 raw bytes
729 memmove(Icc ->ProfileID.ID32, Header.profileID.ID32, 16);
730
731
732 // Read tag directory
733 if (!_cmsReadUInt32Number(io, &TagCount)) return FALSE;
734 if (TagCount > MAX_TABLE_TAG) {
735
736 cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", TagCount);
737 return FALSE;
738 }
739
740
741 // Read tag directory
742 Icc -> TagCount = 0;
743 for (i=0; i < TagCount; i++) {
744
745 if (!_cmsReadUInt32Number(io, (cmsUInt32Number *) &Tag.sig)) return FALSE;
746 if (!_cmsReadUInt32Number(io, &Tag.offset)) return FALSE;
747 if (!_cmsReadUInt32Number(io, &Tag.size)) return FALSE;
748
749 // Perform some sanity check. Offset + size should fall inside file.
750 if (Tag.offset + Tag.size > HeaderSize ||
751 Tag.offset + Tag.size < Tag.offset)
752 continue;
753
754 Icc -> TagNames[Icc ->TagCount] = Tag.sig;
755 Icc -> TagOffsets[Icc ->TagCount] = Tag.offset;
756 Icc -> TagSizes[Icc ->TagCount] = Tag.size;
757
758 // Search for links
759 for (j=0; j < Icc ->TagCount; j++) {
760
761 if ((Icc ->TagOffsets[j] == Tag.offset) &&
762 (Icc ->TagSizes[j] == Tag.size)) {
763
764 Icc ->TagLinked[Icc ->TagCount] = Icc ->TagNames[j];
765 }
766
767 }
768
769 Icc ->TagCount++;
770 }
771
772 return TRUE;
773 }
774
775 // Saves profile header
_cmsWriteHeader(_cmsICCPROFILE * Icc,cmsUInt32Number UsedSpace)776 cmsBool _cmsWriteHeader(_cmsICCPROFILE* Icc, cmsUInt32Number UsedSpace)
777 {
778 cmsICCHeader Header;
779 cmsUInt32Number i;
780 cmsTagEntry Tag;
781 cmsUInt32Number Count;
782
783 Header.size = _cmsAdjustEndianess32(UsedSpace);
784 Header.cmmId = _cmsAdjustEndianess32(lcmsSignature);
785 Header.version = _cmsAdjustEndianess32(Icc ->Version);
786
787 Header.deviceClass = (cmsProfileClassSignature) _cmsAdjustEndianess32(Icc -> DeviceClass);
788 Header.colorSpace = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Icc -> ColorSpace);
789 Header.pcs = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Icc -> PCS);
790
791 // NOTE: in v4 Timestamp must be in UTC rather than in local time
792 _cmsEncodeDateTimeNumber(&Header.date, &Icc ->Created);
793
794 Header.magic = _cmsAdjustEndianess32(cmsMagicNumber);
795
796 #ifdef CMS_IS_WINDOWS_
797 Header.platform = (cmsPlatformSignature) _cmsAdjustEndianess32(cmsSigMicrosoft);
798 #else
799 Header.platform = (cmsPlatformSignature) _cmsAdjustEndianess32(cmsSigMacintosh);
800 #endif
801
802 Header.flags = _cmsAdjustEndianess32(Icc -> flags);
803 Header.manufacturer = _cmsAdjustEndianess32(Icc -> manufacturer);
804 Header.model = _cmsAdjustEndianess32(Icc -> model);
805
806 _cmsAdjustEndianess64(&Header.attributes, &Icc -> attributes);
807
808 // Rendering intent in the header (for embedded profiles)
809 Header.renderingIntent = _cmsAdjustEndianess32(Icc -> RenderingIntent);
810
811 // Illuminant is always D50
812 Header.illuminant.X = (cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) _cmsDoubleTo15Fixed16(cmsD50_XYZ()->X));
813 Header.illuminant.Y = (cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) _cmsDoubleTo15Fixed16(cmsD50_XYZ()->Y));
814 Header.illuminant.Z = (cmsS15Fixed16Number) _cmsAdjustEndianess32((cmsUInt32Number) _cmsDoubleTo15Fixed16(cmsD50_XYZ()->Z));
815
816 // Created by LittleCMS (that's me!)
817 Header.creator = _cmsAdjustEndianess32(lcmsSignature);
818
819 memset(&Header.reserved, 0, sizeof(Header.reserved));
820
821 // Set profile ID. Endianness is always big endian
822 memmove(&Header.profileID, &Icc ->ProfileID, 16);
823
824 // Dump the header
825 if (!Icc -> IOhandler->Write(Icc->IOhandler, sizeof(cmsICCHeader), &Header)) return FALSE;
826
827 // Saves Tag directory
828
829 // Get true count
830 Count = 0;
831 for (i=0; i < Icc -> TagCount; i++) {
832 if (Icc ->TagNames[i] != (cmsTagSignature) 0)
833 Count++;
834 }
835
836 // Store number of tags
837 if (!_cmsWriteUInt32Number(Icc ->IOhandler, Count)) return FALSE;
838
839 for (i=0; i < Icc -> TagCount; i++) {
840
841 if (Icc ->TagNames[i] == (cmsTagSignature) 0) continue; // It is just a placeholder
842
843 Tag.sig = (cmsTagSignature) _cmsAdjustEndianess32((cmsUInt32Number) Icc -> TagNames[i]);
844 Tag.offset = _cmsAdjustEndianess32((cmsUInt32Number) Icc -> TagOffsets[i]);
845 Tag.size = _cmsAdjustEndianess32((cmsUInt32Number) Icc -> TagSizes[i]);
846
847 if (!Icc ->IOhandler -> Write(Icc-> IOhandler, sizeof(cmsTagEntry), &Tag)) return FALSE;
848 }
849
850 return TRUE;
851 }
852
853 // ----------------------------------------------------------------------- Set/Get several struct members
854
855
cmsGetHeaderRenderingIntent(cmsHPROFILE hProfile)856 cmsUInt32Number CMSEXPORT cmsGetHeaderRenderingIntent(cmsHPROFILE hProfile)
857 {
858 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
859 return Icc -> RenderingIntent;
860 }
861
cmsSetHeaderRenderingIntent(cmsHPROFILE hProfile,cmsUInt32Number RenderingIntent)862 void CMSEXPORT cmsSetHeaderRenderingIntent(cmsHPROFILE hProfile, cmsUInt32Number RenderingIntent)
863 {
864 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
865 Icc -> RenderingIntent = RenderingIntent;
866 }
867
cmsGetHeaderFlags(cmsHPROFILE hProfile)868 cmsUInt32Number CMSEXPORT cmsGetHeaderFlags(cmsHPROFILE hProfile)
869 {
870 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
871 return (cmsUInt32Number) Icc -> flags;
872 }
873
cmsSetHeaderFlags(cmsHPROFILE hProfile,cmsUInt32Number Flags)874 void CMSEXPORT cmsSetHeaderFlags(cmsHPROFILE hProfile, cmsUInt32Number Flags)
875 {
876 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
877 Icc -> flags = (cmsUInt32Number) Flags;
878 }
879
cmsGetHeaderManufacturer(cmsHPROFILE hProfile)880 cmsUInt32Number CMSEXPORT cmsGetHeaderManufacturer(cmsHPROFILE hProfile)
881 {
882 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
883 return Icc ->manufacturer;
884 }
885
cmsSetHeaderManufacturer(cmsHPROFILE hProfile,cmsUInt32Number manufacturer)886 void CMSEXPORT cmsSetHeaderManufacturer(cmsHPROFILE hProfile, cmsUInt32Number manufacturer)
887 {
888 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
889 Icc -> manufacturer = manufacturer;
890 }
891
cmsGetHeaderCreator(cmsHPROFILE hProfile)892 cmsUInt32Number CMSEXPORT cmsGetHeaderCreator(cmsHPROFILE hProfile)
893 {
894 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
895 return Icc ->creator;
896 }
897
cmsGetHeaderModel(cmsHPROFILE hProfile)898 cmsUInt32Number CMSEXPORT cmsGetHeaderModel(cmsHPROFILE hProfile)
899 {
900 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
901 return Icc ->model;
902 }
903
cmsSetHeaderModel(cmsHPROFILE hProfile,cmsUInt32Number model)904 void CMSEXPORT cmsSetHeaderModel(cmsHPROFILE hProfile, cmsUInt32Number model)
905 {
906 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
907 Icc -> model = model;
908 }
909
cmsGetHeaderAttributes(cmsHPROFILE hProfile,cmsUInt64Number * Flags)910 void CMSEXPORT cmsGetHeaderAttributes(cmsHPROFILE hProfile, cmsUInt64Number* Flags)
911 {
912 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
913 memmove(Flags, &Icc -> attributes, sizeof(cmsUInt64Number));
914 }
915
cmsSetHeaderAttributes(cmsHPROFILE hProfile,cmsUInt64Number Flags)916 void CMSEXPORT cmsSetHeaderAttributes(cmsHPROFILE hProfile, cmsUInt64Number Flags)
917 {
918 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
919 memmove(&Icc -> attributes, &Flags, sizeof(cmsUInt64Number));
920 }
921
cmsGetHeaderProfileID(cmsHPROFILE hProfile,cmsUInt8Number * ProfileID)922 void CMSEXPORT cmsGetHeaderProfileID(cmsHPROFILE hProfile, cmsUInt8Number* ProfileID)
923 {
924 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
925 memmove(ProfileID, Icc ->ProfileID.ID8, 16);
926 }
927
cmsSetHeaderProfileID(cmsHPROFILE hProfile,cmsUInt8Number * ProfileID)928 void CMSEXPORT cmsSetHeaderProfileID(cmsHPROFILE hProfile, cmsUInt8Number* ProfileID)
929 {
930 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
931 memmove(&Icc -> ProfileID, ProfileID, 16);
932 }
933
cmsGetHeaderCreationDateTime(cmsHPROFILE hProfile,struct tm * Dest)934 cmsBool CMSEXPORT cmsGetHeaderCreationDateTime(cmsHPROFILE hProfile, struct tm *Dest)
935 {
936 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
937 memmove(Dest, &Icc ->Created, sizeof(struct tm));
938 return TRUE;
939 }
940
cmsGetPCS(cmsHPROFILE hProfile)941 cmsColorSpaceSignature CMSEXPORT cmsGetPCS(cmsHPROFILE hProfile)
942 {
943 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
944 return Icc -> PCS;
945 }
946
cmsSetPCS(cmsHPROFILE hProfile,cmsColorSpaceSignature pcs)947 void CMSEXPORT cmsSetPCS(cmsHPROFILE hProfile, cmsColorSpaceSignature pcs)
948 {
949 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
950 Icc -> PCS = pcs;
951 }
952
cmsGetColorSpace(cmsHPROFILE hProfile)953 cmsColorSpaceSignature CMSEXPORT cmsGetColorSpace(cmsHPROFILE hProfile)
954 {
955 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
956 return Icc -> ColorSpace;
957 }
958
cmsSetColorSpace(cmsHPROFILE hProfile,cmsColorSpaceSignature sig)959 void CMSEXPORT cmsSetColorSpace(cmsHPROFILE hProfile, cmsColorSpaceSignature sig)
960 {
961 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
962 Icc -> ColorSpace = sig;
963 }
964
cmsGetDeviceClass(cmsHPROFILE hProfile)965 cmsProfileClassSignature CMSEXPORT cmsGetDeviceClass(cmsHPROFILE hProfile)
966 {
967 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
968 return Icc -> DeviceClass;
969 }
970
cmsSetDeviceClass(cmsHPROFILE hProfile,cmsProfileClassSignature sig)971 void CMSEXPORT cmsSetDeviceClass(cmsHPROFILE hProfile, cmsProfileClassSignature sig)
972 {
973 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
974 Icc -> DeviceClass = sig;
975 }
976
cmsGetEncodedICCversion(cmsHPROFILE hProfile)977 cmsUInt32Number CMSEXPORT cmsGetEncodedICCversion(cmsHPROFILE hProfile)
978 {
979 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
980 return Icc -> Version;
981 }
982
cmsSetEncodedICCversion(cmsHPROFILE hProfile,cmsUInt32Number Version)983 void CMSEXPORT cmsSetEncodedICCversion(cmsHPROFILE hProfile, cmsUInt32Number Version)
984 {
985 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
986 Icc -> Version = Version;
987 }
988
989 // Get an hexadecimal number with same digits as v
990 static
BaseToBase(cmsUInt32Number in,int BaseIn,int BaseOut)991 cmsUInt32Number BaseToBase(cmsUInt32Number in, int BaseIn, int BaseOut)
992 {
993 char Buff[100];
994 int i, len;
995 cmsUInt32Number out;
996
997 for (len=0; in > 0 && len < 100; len++) {
998
999 Buff[len] = (char) (in % BaseIn);
1000 in /= BaseIn;
1001 }
1002
1003 for (i=len-1, out=0; i >= 0; --i) {
1004 out = out * BaseOut + Buff[i];
1005 }
1006
1007 return out;
1008 }
1009
cmsSetProfileVersion(cmsHPROFILE hProfile,cmsFloat64Number Version)1010 void CMSEXPORT cmsSetProfileVersion(cmsHPROFILE hProfile, cmsFloat64Number Version)
1011 {
1012 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1013
1014 // 4.2 -> 0x4200000
1015
1016 Icc -> Version = BaseToBase((cmsUInt32Number) floor(Version * 100.0 + 0.5), 10, 16) << 16;
1017 }
1018
cmsGetProfileVersion(cmsHPROFILE hProfile)1019 cmsFloat64Number CMSEXPORT cmsGetProfileVersion(cmsHPROFILE hProfile)
1020 {
1021 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1022 cmsUInt32Number n = Icc -> Version >> 16;
1023
1024 return BaseToBase(n, 16, 10) / 100.0;
1025 }
1026 // --------------------------------------------------------------------------------------------------------------
1027
1028
1029 // Create profile from IOhandler
cmsOpenProfileFromIOhandlerTHR(cmsContext ContextID,cmsIOHANDLER * io)1030 cmsHPROFILE CMSEXPORT cmsOpenProfileFromIOhandlerTHR(cmsContext ContextID, cmsIOHANDLER* io)
1031 {
1032 _cmsICCPROFILE* NewIcc;
1033 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1034
1035 if (hEmpty == NULL) return NULL;
1036
1037 NewIcc = (_cmsICCPROFILE*) hEmpty;
1038
1039 NewIcc ->IOhandler = io;
1040 if (!_cmsReadHeader(NewIcc)) goto Error;
1041 return hEmpty;
1042
1043 Error:
1044 cmsCloseProfile(hEmpty);
1045 return NULL;
1046 }
1047
1048 // Create profile from IOhandler
cmsOpenProfileFromIOhandler2THR(cmsContext ContextID,cmsIOHANDLER * io,cmsBool write)1049 cmsHPROFILE CMSEXPORT cmsOpenProfileFromIOhandler2THR(cmsContext ContextID, cmsIOHANDLER* io, cmsBool write)
1050 {
1051 _cmsICCPROFILE* NewIcc;
1052 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1053
1054 if (hEmpty == NULL) return NULL;
1055
1056 NewIcc = (_cmsICCPROFILE*) hEmpty;
1057
1058 NewIcc ->IOhandler = io;
1059 if (write) {
1060
1061 NewIcc -> IsWrite = TRUE;
1062 return hEmpty;
1063 }
1064
1065 if (!_cmsReadHeader(NewIcc)) goto Error;
1066 return hEmpty;
1067
1068 Error:
1069 cmsCloseProfile(hEmpty);
1070 return NULL;
1071 }
1072
1073
1074 // Create profile from disk file
cmsOpenProfileFromFileTHR(cmsContext ContextID,const char * lpFileName,const char * sAccess)1075 cmsHPROFILE CMSEXPORT cmsOpenProfileFromFileTHR(cmsContext ContextID, const char *lpFileName, const char *sAccess)
1076 {
1077 _cmsICCPROFILE* NewIcc;
1078 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1079
1080 if (hEmpty == NULL) return NULL;
1081
1082 NewIcc = (_cmsICCPROFILE*) hEmpty;
1083
1084 NewIcc ->IOhandler = cmsOpenIOhandlerFromFile(ContextID, lpFileName, sAccess);
1085 if (NewIcc ->IOhandler == NULL) goto Error;
1086
1087 if (*sAccess == 'W' || *sAccess == 'w') {
1088
1089 NewIcc -> IsWrite = TRUE;
1090
1091 return hEmpty;
1092 }
1093
1094 if (!_cmsReadHeader(NewIcc)) goto Error;
1095 return hEmpty;
1096
1097 Error:
1098 cmsCloseProfile(hEmpty);
1099 return NULL;
1100 }
1101
1102
cmsOpenProfileFromFile(const char * ICCProfile,const char * sAccess)1103 cmsHPROFILE CMSEXPORT cmsOpenProfileFromFile(const char *ICCProfile, const char *sAccess)
1104 {
1105 return cmsOpenProfileFromFileTHR(NULL, ICCProfile, sAccess);
1106 }
1107
1108
cmsOpenProfileFromStreamTHR(cmsContext ContextID,FILE * ICCProfile,const char * sAccess)1109 cmsHPROFILE CMSEXPORT cmsOpenProfileFromStreamTHR(cmsContext ContextID, FILE* ICCProfile, const char *sAccess)
1110 {
1111 _cmsICCPROFILE* NewIcc;
1112 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1113
1114 if (hEmpty == NULL) return NULL;
1115
1116 NewIcc = (_cmsICCPROFILE*) hEmpty;
1117
1118 NewIcc ->IOhandler = cmsOpenIOhandlerFromStream(ContextID, ICCProfile);
1119 if (NewIcc ->IOhandler == NULL) goto Error;
1120
1121 if (*sAccess == 'w') {
1122
1123 NewIcc -> IsWrite = TRUE;
1124 return hEmpty;
1125 }
1126
1127 if (!_cmsReadHeader(NewIcc)) goto Error;
1128 return hEmpty;
1129
1130 Error:
1131 cmsCloseProfile(hEmpty);
1132 return NULL;
1133
1134 }
1135
cmsOpenProfileFromStream(FILE * ICCProfile,const char * sAccess)1136 cmsHPROFILE CMSEXPORT cmsOpenProfileFromStream(FILE* ICCProfile, const char *sAccess)
1137 {
1138 return cmsOpenProfileFromStreamTHR(NULL, ICCProfile, sAccess);
1139 }
1140
1141
1142 // Open from memory block
cmsOpenProfileFromMemTHR(cmsContext ContextID,const void * MemPtr,cmsUInt32Number dwSize)1143 cmsHPROFILE CMSEXPORT cmsOpenProfileFromMemTHR(cmsContext ContextID, const void* MemPtr, cmsUInt32Number dwSize)
1144 {
1145 _cmsICCPROFILE* NewIcc;
1146 cmsHPROFILE hEmpty;
1147
1148 hEmpty = cmsCreateProfilePlaceholder(ContextID);
1149 if (hEmpty == NULL) return NULL;
1150
1151 NewIcc = (_cmsICCPROFILE*) hEmpty;
1152
1153 // Ok, in this case const void* is casted to void* just because open IO handler
1154 // shares read and writing modes. Don't abuse this feature!
1155 NewIcc ->IOhandler = cmsOpenIOhandlerFromMem(ContextID, (void*) MemPtr, dwSize, "r");
1156 if (NewIcc ->IOhandler == NULL) goto Error;
1157
1158 if (!_cmsReadHeader(NewIcc)) goto Error;
1159
1160 return hEmpty;
1161
1162 Error:
1163 cmsCloseProfile(hEmpty);
1164 return NULL;
1165 }
1166
cmsOpenProfileFromMem(const void * MemPtr,cmsUInt32Number dwSize)1167 cmsHPROFILE CMSEXPORT cmsOpenProfileFromMem(const void* MemPtr, cmsUInt32Number dwSize)
1168 {
1169 return cmsOpenProfileFromMemTHR(NULL, MemPtr, dwSize);
1170 }
1171
1172
1173
1174 // Dump tag contents. If the profile is being modified, untouched tags are copied from FileOrig
1175 static
SaveTags(_cmsICCPROFILE * Icc,_cmsICCPROFILE * FileOrig)1176 cmsBool SaveTags(_cmsICCPROFILE* Icc, _cmsICCPROFILE* FileOrig)
1177 {
1178 cmsUInt8Number* Data;
1179 cmsUInt32Number i;
1180 cmsUInt32Number Begin;
1181 cmsIOHANDLER* io = Icc ->IOhandler;
1182 cmsTagDescriptor* TagDescriptor;
1183 cmsTagTypeSignature TypeBase;
1184 cmsTagTypeSignature Type;
1185 cmsTagTypeHandler* TypeHandler;
1186 cmsFloat64Number Version = cmsGetProfileVersion((cmsHPROFILE) Icc);
1187 cmsTagTypeHandler LocalTypeHandler;
1188
1189 for (i=0; i < Icc -> TagCount; i++) {
1190
1191 if (Icc ->TagNames[i] == (cmsTagSignature) 0) continue;
1192
1193 // Linked tags are not written
1194 if (Icc ->TagLinked[i] != (cmsTagSignature) 0) continue;
1195
1196 Icc -> TagOffsets[i] = Begin = io ->UsedSpace;
1197
1198 Data = (cmsUInt8Number*) Icc -> TagPtrs[i];
1199
1200 if (!Data) {
1201
1202 // Reach here if we are copying a tag from a disk-based ICC profile which has not been modified by user.
1203 // In this case a blind copy of the block data is performed
1204 if (FileOrig != NULL && Icc -> TagOffsets[i]) {
1205
1206 if (FileOrig->IOhandler != NULL)
1207 {
1208 cmsUInt32Number TagSize = FileOrig->TagSizes[i];
1209 cmsUInt32Number TagOffset = FileOrig->TagOffsets[i];
1210 void* Mem;
1211
1212 if (!FileOrig->IOhandler->Seek(FileOrig->IOhandler, TagOffset)) return FALSE;
1213
1214 Mem = _cmsMalloc(Icc->ContextID, TagSize);
1215 if (Mem == NULL) return FALSE;
1216
1217 if (FileOrig->IOhandler->Read(FileOrig->IOhandler, Mem, TagSize, 1) != 1) return FALSE;
1218 if (!io->Write(io, TagSize, Mem)) return FALSE;
1219 _cmsFree(Icc->ContextID, Mem);
1220
1221 Icc->TagSizes[i] = (io->UsedSpace - Begin);
1222
1223
1224 // Align to 32 bit boundary.
1225 if (!_cmsWriteAlignment(io))
1226 return FALSE;
1227 }
1228 }
1229
1230 continue;
1231 }
1232
1233
1234 // Should this tag be saved as RAW? If so, tagsizes should be specified in advance (no further cooking is done)
1235 if (Icc ->TagSaveAsRaw[i]) {
1236
1237 if (io -> Write(io, Icc ->TagSizes[i], Data) != 1) return FALSE;
1238 }
1239 else {
1240
1241 // Search for support on this tag
1242 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, Icc -> TagNames[i]);
1243 if (TagDescriptor == NULL) continue; // Unsupported, ignore it
1244
1245 if (TagDescriptor ->DecideType != NULL) {
1246
1247 Type = TagDescriptor ->DecideType(Version, Data);
1248 }
1249 else {
1250
1251 Type = TagDescriptor ->SupportedTypes[0];
1252 }
1253
1254 TypeHandler = _cmsGetTagTypeHandler(Icc->ContextID, Type);
1255
1256 if (TypeHandler == NULL) {
1257 cmsSignalError(Icc ->ContextID, cmsERROR_INTERNAL, "(Internal) no handler for tag %x", Icc -> TagNames[i]);
1258 continue;
1259 }
1260
1261 TypeBase = TypeHandler ->Signature;
1262 if (!_cmsWriteTypeBase(io, TypeBase))
1263 return FALSE;
1264
1265 LocalTypeHandler = *TypeHandler;
1266 LocalTypeHandler.ContextID = Icc ->ContextID;
1267 LocalTypeHandler.ICCVersion = Icc ->Version;
1268 if (!LocalTypeHandler.WritePtr(&LocalTypeHandler, io, Data, TagDescriptor ->ElemCount)) {
1269
1270 char String[5];
1271
1272 _cmsTagSignature2String(String, (cmsTagSignature) TypeBase);
1273 cmsSignalError(Icc ->ContextID, cmsERROR_WRITE, "Couldn't write type '%s'", String);
1274 return FALSE;
1275 }
1276 }
1277
1278
1279 Icc -> TagSizes[i] = (io ->UsedSpace - Begin);
1280
1281 // Align to 32 bit boundary.
1282 if (! _cmsWriteAlignment(io))
1283 return FALSE;
1284 }
1285
1286
1287 return TRUE;
1288 }
1289
1290
1291 // Fill the offset and size fields for all linked tags
1292 static
SetLinks(_cmsICCPROFILE * Icc)1293 cmsBool SetLinks( _cmsICCPROFILE* Icc)
1294 {
1295 cmsUInt32Number i;
1296
1297 for (i=0; i < Icc -> TagCount; i++) {
1298
1299 cmsTagSignature lnk = Icc ->TagLinked[i];
1300 if (lnk != (cmsTagSignature) 0) {
1301
1302 int j = _cmsSearchTag(Icc, lnk, FALSE);
1303 if (j >= 0) {
1304
1305 Icc ->TagOffsets[i] = Icc ->TagOffsets[j];
1306 Icc ->TagSizes[i] = Icc ->TagSizes[j];
1307 }
1308
1309 }
1310 }
1311
1312 return TRUE;
1313 }
1314
1315 // Low-level save to IOHANDLER. It returns the number of bytes used to
1316 // store the profile, or zero on error. io may be NULL and in this case
1317 // no data is written--only sizes are calculated
cmsSaveProfileToIOhandler(cmsHPROFILE hProfile,cmsIOHANDLER * io)1318 cmsUInt32Number CMSEXPORT cmsSaveProfileToIOhandler(cmsHPROFILE hProfile, cmsIOHANDLER* io)
1319 {
1320 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1321 _cmsICCPROFILE Keep;
1322 cmsIOHANDLER* PrevIO = NULL;
1323 cmsUInt32Number UsedSpace;
1324 cmsContext ContextID;
1325
1326 _cmsAssert(hProfile != NULL);
1327
1328 if (!_cmsLockMutex(Icc->ContextID, Icc->UsrMutex)) return 0;
1329 memmove(&Keep, Icc, sizeof(_cmsICCPROFILE));
1330
1331 ContextID = cmsGetProfileContextID(hProfile);
1332 PrevIO = Icc ->IOhandler = cmsOpenIOhandlerFromNULL(ContextID);
1333 if (PrevIO == NULL) {
1334 _cmsUnlockMutex(Icc->ContextID, Icc->UsrMutex);
1335 return 0;
1336 }
1337
1338 // Pass #1 does compute offsets
1339
1340 if (!_cmsWriteHeader(Icc, 0)) goto Error;
1341 if (!SaveTags(Icc, &Keep)) goto Error;
1342
1343 UsedSpace = PrevIO ->UsedSpace;
1344
1345 // Pass #2 does save to iohandler
1346
1347 if (io != NULL) {
1348
1349 Icc ->IOhandler = io;
1350 if (!SetLinks(Icc)) goto Error;
1351 if (!_cmsWriteHeader(Icc, UsedSpace)) goto Error;
1352 if (!SaveTags(Icc, &Keep)) goto Error;
1353 }
1354
1355 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
1356 if (!cmsCloseIOhandler(PrevIO))
1357 UsedSpace = 0; // As a error marker
1358
1359 _cmsUnlockMutex(Icc->ContextID, Icc->UsrMutex);
1360
1361 return UsedSpace;
1362
1363
1364 Error:
1365 cmsCloseIOhandler(PrevIO);
1366 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
1367 _cmsUnlockMutex(Icc->ContextID, Icc->UsrMutex);
1368
1369 return 0;
1370 }
1371
1372
1373 // Low-level save to disk.
cmsSaveProfileToFile(cmsHPROFILE hProfile,const char * FileName)1374 cmsBool CMSEXPORT cmsSaveProfileToFile(cmsHPROFILE hProfile, const char* FileName)
1375 {
1376 cmsContext ContextID = cmsGetProfileContextID(hProfile);
1377 cmsIOHANDLER* io = cmsOpenIOhandlerFromFile(ContextID, FileName, "w");
1378 cmsBool rc;
1379
1380 if (io == NULL) return FALSE;
1381
1382 rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
1383 rc &= cmsCloseIOhandler(io);
1384
1385 if (rc == FALSE) { // remove() is C99 per 7.19.4.1
1386 remove(FileName); // We have to IGNORE return value in this case
1387 }
1388 return rc;
1389 }
1390
1391 // Same as anterior, but for streams
cmsSaveProfileToStream(cmsHPROFILE hProfile,FILE * Stream)1392 cmsBool CMSEXPORT cmsSaveProfileToStream(cmsHPROFILE hProfile, FILE* Stream)
1393 {
1394 cmsBool rc;
1395 cmsContext ContextID = cmsGetProfileContextID(hProfile);
1396 cmsIOHANDLER* io = cmsOpenIOhandlerFromStream(ContextID, Stream);
1397
1398 if (io == NULL) return FALSE;
1399
1400 rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
1401 rc &= cmsCloseIOhandler(io);
1402
1403 return rc;
1404 }
1405
1406
1407 // Same as anterior, but for memory blocks. In this case, a NULL as MemPtr means calculate needed space only
cmsSaveProfileToMem(cmsHPROFILE hProfile,void * MemPtr,cmsUInt32Number * BytesNeeded)1408 cmsBool CMSEXPORT cmsSaveProfileToMem(cmsHPROFILE hProfile, void *MemPtr, cmsUInt32Number* BytesNeeded)
1409 {
1410 cmsBool rc;
1411 cmsIOHANDLER* io;
1412 cmsContext ContextID = cmsGetProfileContextID(hProfile);
1413
1414 _cmsAssert(BytesNeeded != NULL);
1415
1416 // Should we just calculate the needed space?
1417 if (MemPtr == NULL) {
1418
1419 *BytesNeeded = cmsSaveProfileToIOhandler(hProfile, NULL);
1420 return (*BytesNeeded == 0) ? FALSE : TRUE;
1421 }
1422
1423 // That is a real write operation
1424 io = cmsOpenIOhandlerFromMem(ContextID, MemPtr, *BytesNeeded, "w");
1425 if (io == NULL) return FALSE;
1426
1427 rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
1428 rc &= cmsCloseIOhandler(io);
1429
1430 return rc;
1431 }
1432
1433
1434
1435 // Closes a profile freeing any involved resources
cmsCloseProfile(cmsHPROFILE hProfile)1436 cmsBool CMSEXPORT cmsCloseProfile(cmsHPROFILE hProfile)
1437 {
1438 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1439 cmsBool rc = TRUE;
1440 cmsUInt32Number i;
1441
1442 if (!Icc) return FALSE;
1443
1444 // Was open in write mode?
1445 if (Icc ->IsWrite) {
1446
1447 Icc ->IsWrite = FALSE; // Assure no further writing
1448 rc &= cmsSaveProfileToFile(hProfile, Icc ->IOhandler->PhysicalFile);
1449 }
1450
1451 for (i=0; i < Icc -> TagCount; i++) {
1452
1453 if (Icc -> TagPtrs[i]) {
1454
1455 cmsTagTypeHandler* TypeHandler = Icc ->TagTypeHandlers[i];
1456
1457 if (TypeHandler != NULL) {
1458 cmsTagTypeHandler LocalTypeHandler = *TypeHandler;
1459
1460 LocalTypeHandler.ContextID = Icc ->ContextID; // As an additional parameters
1461 LocalTypeHandler.ICCVersion = Icc ->Version;
1462 LocalTypeHandler.FreePtr(&LocalTypeHandler, Icc -> TagPtrs[i]);
1463 }
1464 else
1465 _cmsFree(Icc ->ContextID, Icc ->TagPtrs[i]);
1466 }
1467 }
1468
1469 if (Icc ->IOhandler != NULL) {
1470 rc &= cmsCloseIOhandler(Icc->IOhandler);
1471 }
1472
1473 _cmsDestroyMutex(Icc->ContextID, Icc->UsrMutex);
1474
1475 _cmsFree(Icc ->ContextID, Icc); // Free placeholder memory
1476
1477 return rc;
1478 }
1479
1480
1481 // -------------------------------------------------------------------------------------------------------------------
1482
1483
1484 // Returns TRUE if a given tag is supported by a plug-in
1485 static
IsTypeSupported(cmsTagDescriptor * TagDescriptor,cmsTagTypeSignature Type)1486 cmsBool IsTypeSupported(cmsTagDescriptor* TagDescriptor, cmsTagTypeSignature Type)
1487 {
1488 cmsUInt32Number i, nMaxTypes;
1489
1490 nMaxTypes = TagDescriptor->nSupportedTypes;
1491 if (nMaxTypes >= MAX_TYPES_IN_LCMS_PLUGIN)
1492 nMaxTypes = MAX_TYPES_IN_LCMS_PLUGIN;
1493
1494 for (i=0; i < nMaxTypes; i++) {
1495 if (Type == TagDescriptor ->SupportedTypes[i]) return TRUE;
1496 }
1497
1498 return FALSE;
1499 }
1500
1501
1502 // That's the main read function
cmsReadTag(cmsHPROFILE hProfile,cmsTagSignature sig)1503 void* CMSEXPORT cmsReadTag(cmsHPROFILE hProfile, cmsTagSignature sig)
1504 {
1505 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1506 cmsIOHANDLER* io = Icc ->IOhandler;
1507 cmsTagTypeHandler* TypeHandler;
1508 cmsTagTypeHandler LocalTypeHandler;
1509 cmsTagDescriptor* TagDescriptor;
1510 cmsTagTypeSignature BaseType;
1511 cmsUInt32Number Offset, TagSize;
1512 cmsUInt32Number ElemCount;
1513 int n;
1514
1515 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return NULL;
1516
1517 n = _cmsSearchTag(Icc, sig, TRUE);
1518 if (n < 0) goto Error; // Not found, return NULL
1519
1520
1521 // If the element is already in memory, return the pointer
1522 if (Icc -> TagPtrs[n]) {
1523
1524 if (Icc->TagTypeHandlers[n] == NULL) goto Error;
1525
1526 // Sanity check
1527 BaseType = Icc->TagTypeHandlers[n]->Signature;
1528 if (BaseType == 0) goto Error;
1529
1530 TagDescriptor = _cmsGetTagDescriptor(Icc->ContextID, sig);
1531 if (TagDescriptor == NULL) goto Error;
1532
1533 if (!IsTypeSupported(TagDescriptor, BaseType)) goto Error;
1534
1535 if (Icc ->TagSaveAsRaw[n]) goto Error; // We don't support read raw tags as cooked
1536
1537 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1538 return Icc -> TagPtrs[n];
1539 }
1540
1541 // We need to read it. Get the offset and size to the file
1542 Offset = Icc -> TagOffsets[n];
1543 TagSize = Icc -> TagSizes[n];
1544
1545 if (TagSize < 8) goto Error;
1546
1547 // Seek to its location
1548 if (!io -> Seek(io, Offset))
1549 goto Error;
1550
1551 // Search for support on this tag
1552 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, sig);
1553 if (TagDescriptor == NULL) {
1554
1555 char String[5];
1556
1557 _cmsTagSignature2String(String, sig);
1558
1559 // An unknown element was found.
1560 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unknown tag type '%s' found.", String);
1561 goto Error; // Unsupported.
1562 }
1563
1564 // if supported, get type and check if in list
1565 BaseType = _cmsReadTypeBase(io);
1566 if (BaseType == 0) goto Error;
1567
1568 if (!IsTypeSupported(TagDescriptor, BaseType)) goto Error;
1569
1570 TagSize -= 8; // Already read by the type base logic
1571
1572 // Get type handler
1573 TypeHandler = _cmsGetTagTypeHandler(Icc ->ContextID, BaseType);
1574 if (TypeHandler == NULL) goto Error;
1575 LocalTypeHandler = *TypeHandler;
1576
1577
1578 // Read the tag
1579 Icc -> TagTypeHandlers[n] = TypeHandler;
1580
1581 LocalTypeHandler.ContextID = Icc ->ContextID;
1582 LocalTypeHandler.ICCVersion = Icc ->Version;
1583 Icc -> TagPtrs[n] = LocalTypeHandler.ReadPtr(&LocalTypeHandler, io, &ElemCount, TagSize);
1584
1585 // The tag type is supported, but something wrong happened and we cannot read the tag.
1586 // let know the user about this (although it is just a warning)
1587 if (Icc -> TagPtrs[n] == NULL) {
1588
1589 char String[5];
1590
1591 _cmsTagSignature2String(String, sig);
1592 cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "Corrupted tag '%s'", String);
1593 goto Error;
1594 }
1595
1596 // This is a weird error that may be a symptom of something more serious, the number of
1597 // stored item is actually less than the number of required elements.
1598 if (ElemCount < TagDescriptor ->ElemCount) {
1599
1600 char String[5];
1601
1602 _cmsTagSignature2String(String, sig);
1603 cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "'%s' Inconsistent number of items: expected %d, got %d",
1604 String, TagDescriptor ->ElemCount, ElemCount);
1605 goto Error;
1606 }
1607
1608
1609 // Return the data
1610 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1611 return Icc -> TagPtrs[n];
1612
1613
1614 // Return error and unlock tha data
1615 Error:
1616 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1617 return NULL;
1618 }
1619
1620
1621 // Get true type of data
_cmsGetTagTrueType(cmsHPROFILE hProfile,cmsTagSignature sig)1622 cmsTagTypeSignature _cmsGetTagTrueType(cmsHPROFILE hProfile, cmsTagSignature sig)
1623 {
1624 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1625 cmsTagTypeHandler* TypeHandler;
1626 int n;
1627
1628 // Search for given tag in ICC profile directory
1629 n = _cmsSearchTag(Icc, sig, TRUE);
1630 if (n < 0) return (cmsTagTypeSignature) 0; // Not found, return NULL
1631
1632 // Get the handler. The true type is there
1633 TypeHandler = Icc -> TagTypeHandlers[n];
1634 return TypeHandler ->Signature;
1635 }
1636
1637
1638 // Write a single tag. This just keeps track of the tak into a list of "to be written". If the tag is already
1639 // in that list, the previous version is deleted.
cmsWriteTag(cmsHPROFILE hProfile,cmsTagSignature sig,const void * data)1640 cmsBool CMSEXPORT cmsWriteTag(cmsHPROFILE hProfile, cmsTagSignature sig, const void* data)
1641 {
1642 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1643 cmsTagTypeHandler* TypeHandler = NULL;
1644 cmsTagTypeHandler LocalTypeHandler;
1645 cmsTagDescriptor* TagDescriptor = NULL;
1646 cmsTagTypeSignature Type;
1647 int i;
1648 cmsFloat64Number Version;
1649 char TypeString[5], SigString[5];
1650
1651 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return FALSE;
1652
1653 // To delete tags.
1654 if (data == NULL) {
1655
1656 // Delete the tag
1657 i = _cmsSearchTag(Icc, sig, FALSE);
1658 if (i >= 0) {
1659
1660 // Use zero as a mark of deleted
1661 _cmsDeleteTagByPos(Icc, i);
1662 Icc ->TagNames[i] = (cmsTagSignature) 0;
1663 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1664 return TRUE;
1665 }
1666 // Didn't find the tag
1667 goto Error;
1668 }
1669
1670 if (!_cmsNewTag(Icc, sig, &i)) goto Error;
1671
1672 // This is not raw
1673 Icc ->TagSaveAsRaw[i] = FALSE;
1674
1675 // This is not a link
1676 Icc ->TagLinked[i] = (cmsTagSignature) 0;
1677
1678 // Get information about the TAG.
1679 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, sig);
1680 if (TagDescriptor == NULL){
1681 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported tag '%x'", sig);
1682 goto Error;
1683 }
1684
1685
1686 // Now we need to know which type to use. It depends on the version.
1687 Version = cmsGetProfileVersion(hProfile);
1688
1689 if (TagDescriptor ->DecideType != NULL) {
1690
1691 // Let the tag descriptor to decide the type base on depending on
1692 // the data. This is useful for example on parametric curves, where
1693 // curves specified by a table cannot be saved as parametric and needs
1694 // to be casted to single v2-curves, even on v4 profiles.
1695
1696 Type = TagDescriptor ->DecideType(Version, data);
1697 }
1698 else {
1699
1700 Type = TagDescriptor ->SupportedTypes[0];
1701 }
1702
1703 // Does the tag support this type?
1704 if (!IsTypeSupported(TagDescriptor, Type)) {
1705
1706 _cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
1707 _cmsTagSignature2String(SigString, sig);
1708
1709 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported type '%s' for tag '%s'", TypeString, SigString);
1710 goto Error;
1711 }
1712
1713 // Does we have a handler for this type?
1714 TypeHandler = _cmsGetTagTypeHandler(Icc->ContextID, Type);
1715 if (TypeHandler == NULL) {
1716
1717 _cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
1718 _cmsTagSignature2String(SigString, sig);
1719
1720 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported type '%s' for tag '%s'", TypeString, SigString);
1721 goto Error; // Should never happen
1722 }
1723
1724
1725 // Fill fields on icc structure
1726 Icc ->TagTypeHandlers[i] = TypeHandler;
1727 Icc ->TagNames[i] = sig;
1728 Icc ->TagSizes[i] = 0;
1729 Icc ->TagOffsets[i] = 0;
1730
1731 LocalTypeHandler = *TypeHandler;
1732 LocalTypeHandler.ContextID = Icc ->ContextID;
1733 LocalTypeHandler.ICCVersion = Icc ->Version;
1734 Icc ->TagPtrs[i] = LocalTypeHandler.DupPtr(&LocalTypeHandler, data, TagDescriptor ->ElemCount);
1735
1736 if (Icc ->TagPtrs[i] == NULL) {
1737
1738 _cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
1739 _cmsTagSignature2String(SigString, sig);
1740 cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "Malformed struct in type '%s' for tag '%s'", TypeString, SigString);
1741
1742 goto Error;
1743 }
1744
1745 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1746 return TRUE;
1747
1748 Error:
1749 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1750 return FALSE;
1751
1752 }
1753
1754 // Read and write raw data. The only way those function would work and keep consistence with normal read and write
1755 // is to do an additional step of serialization. That means, readRaw would issue a normal read and then convert the obtained
1756 // data to raw bytes by using the "write" serialization logic. And vice-versa. I know this may end in situations where
1757 // raw data written does not exactly correspond with the raw data proposed to cmsWriteRaw data, but this approach allows
1758 // to write a tag as raw data and the read it as handled.
1759
cmsReadRawTag(cmsHPROFILE hProfile,cmsTagSignature sig,void * data,cmsUInt32Number BufferSize)1760 cmsUInt32Number CMSEXPORT cmsReadRawTag(cmsHPROFILE hProfile, cmsTagSignature sig, void* data, cmsUInt32Number BufferSize)
1761 {
1762 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1763 void *Object;
1764 int i;
1765 cmsIOHANDLER* MemIO;
1766 cmsTagTypeHandler* TypeHandler = NULL;
1767 cmsTagTypeHandler LocalTypeHandler;
1768 cmsTagDescriptor* TagDescriptor = NULL;
1769 cmsUInt32Number rc;
1770 cmsUInt32Number Offset, TagSize;
1771
1772 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return 0;
1773
1774 // Search for given tag in ICC profile directory
1775 i = _cmsSearchTag(Icc, sig, TRUE);
1776 if (i < 0) goto Error; // Not found,
1777
1778 // It is already read?
1779 if (Icc -> TagPtrs[i] == NULL) {
1780
1781 // No yet, get original position
1782 Offset = Icc ->TagOffsets[i];
1783 TagSize = Icc ->TagSizes[i];
1784
1785 // read the data directly, don't keep copy
1786 if (data != NULL) {
1787
1788 if (BufferSize < TagSize)
1789 TagSize = BufferSize;
1790
1791 if (!Icc ->IOhandler ->Seek(Icc ->IOhandler, Offset)) goto Error;
1792 if (!Icc ->IOhandler ->Read(Icc ->IOhandler, data, 1, TagSize)) goto Error;
1793
1794 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1795 return TagSize;
1796 }
1797
1798 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1799 return Icc ->TagSizes[i];
1800 }
1801
1802 // The data has been already read, or written. But wait!, maybe the user chose to save as
1803 // raw data. In this case, return the raw data directly
1804 if (Icc ->TagSaveAsRaw[i]) {
1805
1806 if (data != NULL) {
1807
1808 TagSize = Icc ->TagSizes[i];
1809 if (BufferSize < TagSize)
1810 TagSize = BufferSize;
1811
1812 memmove(data, Icc ->TagPtrs[i], TagSize);
1813
1814 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1815 return TagSize;
1816 }
1817
1818 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1819 return Icc ->TagSizes[i];
1820 }
1821
1822 // Already read, or previously set by cmsWriteTag(). We need to serialize that
1823 // data to raw in order to maintain consistency.
1824
1825 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1826 Object = cmsReadTag(hProfile, sig);
1827 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return 0;
1828
1829 if (Object == NULL) goto Error;
1830
1831 // Now we need to serialize to a memory block: just use a memory iohandler
1832
1833 if (data == NULL) {
1834 MemIO = cmsOpenIOhandlerFromNULL(cmsGetProfileContextID(hProfile));
1835 } else{
1836 MemIO = cmsOpenIOhandlerFromMem(cmsGetProfileContextID(hProfile), data, BufferSize, "w");
1837 }
1838 if (MemIO == NULL) goto Error;
1839
1840 // Obtain type handling for the tag
1841 TypeHandler = Icc ->TagTypeHandlers[i];
1842 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, sig);
1843 if (TagDescriptor == NULL) {
1844 cmsCloseIOhandler(MemIO);
1845 goto Error;
1846 }
1847
1848 if (TypeHandler == NULL) goto Error;
1849
1850 // Serialize
1851 LocalTypeHandler = *TypeHandler;
1852 LocalTypeHandler.ContextID = Icc ->ContextID;
1853 LocalTypeHandler.ICCVersion = Icc ->Version;
1854
1855 if (!_cmsWriteTypeBase(MemIO, TypeHandler ->Signature)) {
1856 cmsCloseIOhandler(MemIO);
1857 goto Error;
1858 }
1859
1860 if (!LocalTypeHandler.WritePtr(&LocalTypeHandler, MemIO, Object, TagDescriptor ->ElemCount)) {
1861 cmsCloseIOhandler(MemIO);
1862 goto Error;
1863 }
1864
1865 // Get Size and close
1866 rc = MemIO ->Tell(MemIO);
1867 cmsCloseIOhandler(MemIO); // Ignore return code this time
1868
1869 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1870 return rc;
1871
1872 Error:
1873 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1874 return 0;
1875 }
1876
1877 // Similar to the anterior. This function allows to write directly to the ICC profile any data, without
1878 // checking anything. As a rule, mixing Raw with cooked doesn't work, so writing a tag as raw and then reading
1879 // it as cooked without serializing does result into an error. If that is what you want, you will need to dump
1880 // the profile to memry or disk and then reopen it.
cmsWriteRawTag(cmsHPROFILE hProfile,cmsTagSignature sig,const void * data,cmsUInt32Number Size)1881 cmsBool CMSEXPORT cmsWriteRawTag(cmsHPROFILE hProfile, cmsTagSignature sig, const void* data, cmsUInt32Number Size)
1882 {
1883 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1884 int i;
1885
1886 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return 0;
1887
1888 if (!_cmsNewTag(Icc, sig, &i)) {
1889 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1890 return FALSE;
1891 }
1892
1893 // Mark the tag as being written as RAW
1894 Icc ->TagSaveAsRaw[i] = TRUE;
1895 Icc ->TagNames[i] = sig;
1896 Icc ->TagLinked[i] = (cmsTagSignature) 0;
1897
1898 // Keep a copy of the block
1899 Icc ->TagPtrs[i] = _cmsDupMem(Icc ->ContextID, data, Size);
1900 Icc ->TagSizes[i] = Size;
1901
1902 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1903
1904 if (Icc->TagPtrs[i] == NULL) {
1905 Icc->TagNames[i] = (cmsTagSignature) 0;
1906 return FALSE;
1907 }
1908 return TRUE;
1909 }
1910
1911 // Using this function you can collapse several tag entries to the same block in the profile
cmsLinkTag(cmsHPROFILE hProfile,cmsTagSignature sig,cmsTagSignature dest)1912 cmsBool CMSEXPORT cmsLinkTag(cmsHPROFILE hProfile, cmsTagSignature sig, cmsTagSignature dest)
1913 {
1914 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1915 int i;
1916
1917 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return FALSE;
1918
1919 if (!_cmsNewTag(Icc, sig, &i)) {
1920 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1921 return FALSE;
1922 }
1923
1924 // Keep necessary information
1925 Icc ->TagSaveAsRaw[i] = FALSE;
1926 Icc ->TagNames[i] = sig;
1927 Icc ->TagLinked[i] = dest;
1928
1929 Icc ->TagPtrs[i] = NULL;
1930 Icc ->TagSizes[i] = 0;
1931 Icc ->TagOffsets[i] = 0;
1932
1933 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1934 return TRUE;
1935 }
1936
1937
1938 // Returns the tag linked to sig, in the case two tags are sharing same resource
cmsTagLinkedTo(cmsHPROFILE hProfile,cmsTagSignature sig)1939 cmsTagSignature CMSEXPORT cmsTagLinkedTo(cmsHPROFILE hProfile, cmsTagSignature sig)
1940 {
1941 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1942 int i;
1943
1944 // Search for given tag in ICC profile directory
1945 i = _cmsSearchTag(Icc, sig, FALSE);
1946 if (i < 0) return (cmsTagSignature) 0; // Not found, return 0
1947
1948 return Icc -> TagLinked[i];
1949 }
1950