1 /*
2 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
3 *
4 * This code is free software; you can redistribute it and/or modify it
5 * under the terms of the GNU General Public License version 2 only, as
6 * published by the Free Software Foundation. Oracle designates this
7 * particular file as subject to the "Classpath" exception as provided
8 * by Oracle in the LICENSE file that accompanied this code.
9 *
10 * This code is distributed in the hope that it will be useful, but WITHOUT
11 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
12 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
13 * version 2 for more details (a copy is included in the LICENSE file that
14 * accompanied this code).
15 *
16 * You should have received a copy of the GNU General Public License version
17 * 2 along with this work; if not, write to the Free Software Foundation,
18 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
19 *
20 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
21 * or visit www.oracle.com if you need additional information or have any
22 * questions.
23 */
24
25 // This file is available under and governed by the GNU General Public
26 // License version 2 only, as published by the Free Software Foundation.
27 // However, the following notice accompanied the original version of this
28 // file:
29 //
30 //---------------------------------------------------------------------------------
31 //
32 // Little Color Management System
33 // Copyright (c) 1998-2012 Marti Maria Saguer
34 //
35 // Permission is hereby granted, free of charge, to any person obtaining
36 // a copy of this software and associated documentation files (the "Software"),
37 // to deal in the Software without restriction, including without limitation
38 // the rights to use, copy, modify, merge, publish, distribute, sublicense,
39 // and/or sell copies of the Software, and to permit persons to whom the Software
40 // is furnished to do so, subject to the following conditions:
41 //
42 // The above copyright notice and this permission notice shall be included in
43 // all copies or substantial portions of the Software.
44 //
45 // THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
46 // EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO
47 // THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
48 // NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
49 // LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
50 // OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
51 // WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
52 //
53 //---------------------------------------------------------------------------------
54 //
55
56 #include "lcms2_internal.h"
57
58 // Generic I/O, tag dictionary management, profile struct
59
60 // IOhandlers are abstractions used by littleCMS to read from whatever file, stream,
61 // memory block or any storage. Each IOhandler provides implementations for read,
62 // write, seek and tell functions. LittleCMS code deals with IO across those objects.
63 // In this way, is easier to add support for new storage media.
64
65 // NULL stream, for taking care of used space -------------------------------------
66
67 // NULL IOhandler basically does nothing but keep track on how many bytes have been
68 // written. This is handy when creating profiles, where the file size is needed in the
69 // header. Then, whole profile is serialized across NULL IOhandler and a second pass
70 // writes the bytes to the pertinent IOhandler.
71
72 typedef struct {
73 cmsUInt32Number Pointer; // Points to current location
74 } FILENULL;
75
76 static
77 cmsUInt32Number NULLRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
78 {
79 FILENULL* ResData = (FILENULL*) iohandler ->stream;
80
81 cmsUInt32Number len = size * count;
82 ResData -> Pointer += len;
83 return count;
84
85 cmsUNUSED_PARAMETER(Buffer);
86 }
87
88 static
89 cmsBool NULLSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
90 {
91 FILENULL* ResData = (FILENULL*) iohandler ->stream;
92
93 ResData ->Pointer = offset;
94 return TRUE;
95 }
96
97 static
98 cmsUInt32Number NULLTell(cmsIOHANDLER* iohandler)
99 {
100 FILENULL* ResData = (FILENULL*) iohandler ->stream;
101 return ResData -> Pointer;
102 }
103
104 static
105 cmsBool NULLWrite(cmsIOHANDLER* iohandler, cmsUInt32Number size, const void *Ptr)
106 {
107 FILENULL* ResData = (FILENULL*) iohandler ->stream;
108
109 ResData ->Pointer += size;
110 if (ResData ->Pointer > iohandler->UsedSpace)
111 iohandler->UsedSpace = ResData ->Pointer;
112
113 return TRUE;
114
115 cmsUNUSED_PARAMETER(Ptr);
116 }
117
118 static
119 cmsBool NULLClose(cmsIOHANDLER* iohandler)
120 {
121 FILENULL* ResData = (FILENULL*) iohandler ->stream;
122
123 _cmsFree(iohandler ->ContextID, ResData);
124 _cmsFree(iohandler ->ContextID, iohandler);
125 return TRUE;
126 }
127
128 // The NULL IOhandler creator
129 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromNULL(cmsContext ContextID)
130 {
131 struct _cms_io_handler* iohandler = NULL;
132 FILENULL* fm = NULL;
133
134 iohandler = (struct _cms_io_handler*) _cmsMallocZero(ContextID, sizeof(struct _cms_io_handler));
135 if (iohandler == NULL) return NULL;
136
137 fm = (FILENULL*) _cmsMallocZero(ContextID, sizeof(FILENULL));
138 if (fm == NULL) goto Error;
139
140 fm ->Pointer = 0;
141
142 iohandler ->ContextID = ContextID;
143 iohandler ->stream = (void*) fm;
144 iohandler ->UsedSpace = 0;
145 iohandler ->ReportedSize = 0;
146 iohandler ->PhysicalFile[0] = 0;
147
148 iohandler ->Read = NULLRead;
149 iohandler ->Seek = NULLSeek;
150 iohandler ->Close = NULLClose;
151 iohandler ->Tell = NULLTell;
152 iohandler ->Write = NULLWrite;
153
154 return iohandler;
155
156 Error:
157 if (iohandler) _cmsFree(ContextID, iohandler);
158 return NULL;
159
160 }
161
162
163 // Memory-based stream --------------------------------------------------------------
164
165 // Those functions implements an iohandler which takes a block of memory as storage medium.
166
167 typedef struct {
168 cmsUInt8Number* Block; // Points to allocated memory
169 cmsUInt32Number Size; // Size of allocated memory
170 cmsUInt32Number Pointer; // Points to current location
171 int FreeBlockOnClose; // As title
172
173 } FILEMEM;
174
175 static
176 cmsUInt32Number MemoryRead(struct _cms_io_handler* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
177 {
178 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
179 cmsUInt8Number* Ptr;
180 cmsUInt32Number len = size * count;
181
182 if (ResData -> Pointer + len > ResData -> Size){
183
184 len = (ResData -> Size - ResData -> Pointer);
185 cmsSignalError(iohandler ->ContextID, cmsERROR_READ, "Read from memory error. Got %d bytes, block should be of %d bytes", len, count * size);
186 return 0;
187 }
188
189 Ptr = ResData -> Block;
190 Ptr += ResData -> Pointer;
191 memmove(Buffer, Ptr, len);
192 ResData -> Pointer += len;
193
194 return count;
195 }
196
197 // SEEK_CUR is assumed
198 static
199 cmsBool MemorySeek(struct _cms_io_handler* iohandler, cmsUInt32Number offset)
200 {
201 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
202
203 if (offset > ResData ->Size) {
204 cmsSignalError(iohandler ->ContextID, cmsERROR_SEEK, "Too few data; probably corrupted profile");
205 return FALSE;
206 }
207
208 ResData ->Pointer = offset;
209 return TRUE;
210 }
211
212 // Tell for memory
213 static
214 cmsUInt32Number MemoryTell(struct _cms_io_handler* iohandler)
215 {
216 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
217
218 if (ResData == NULL) return 0;
219 return ResData -> Pointer;
220 }
221
222
223 // Writes data to memory, also keeps used space for further reference.
224 static
225 cmsBool MemoryWrite(struct _cms_io_handler* iohandler, cmsUInt32Number size, const void *Ptr)
226 {
227 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
228
229 if (ResData == NULL) return FALSE; // Housekeeping
230
231 // Check for available space. Clip.
232 if (ResData->Pointer + size > ResData->Size) {
233 size = ResData ->Size - ResData->Pointer;
234 }
235
236 if (size == 0) return TRUE; // Write zero bytes is ok, but does nothing
237
238 memmove(ResData ->Block + ResData ->Pointer, Ptr, size);
239 ResData ->Pointer += size;
240
241 if (ResData ->Pointer > iohandler->UsedSpace)
242 iohandler->UsedSpace = ResData ->Pointer;
243
244 return TRUE;
245 }
246
247
248 static
249 cmsBool MemoryClose(struct _cms_io_handler* iohandler)
250 {
251 FILEMEM* ResData = (FILEMEM*) iohandler ->stream;
252
253 if (ResData ->FreeBlockOnClose) {
254
255 if (ResData ->Block) _cmsFree(iohandler ->ContextID, ResData ->Block);
256 }
257
258 _cmsFree(iohandler ->ContextID, ResData);
259 _cmsFree(iohandler ->ContextID, iohandler);
260
261 return TRUE;
262 }
263
264 // Create a iohandler for memory block. AccessMode=='r' assumes the iohandler is going to read, and makes
265 // a copy of the memory block for letting user to free the memory after invoking open profile. In write
266 // mode ("w"), Buffere points to the begin of memory block to be written.
267 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromMem(cmsContext ContextID, void *Buffer, cmsUInt32Number size, const char* AccessMode)
268 {
269 cmsIOHANDLER* iohandler = NULL;
270 FILEMEM* fm = NULL;
271
272 _cmsAssert(AccessMode != NULL);
273
274 iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
275 if (iohandler == NULL) return NULL;
276
277 switch (*AccessMode) {
278
279 case 'r':
280 fm = (FILEMEM*) _cmsMallocZero(ContextID, sizeof(FILEMEM));
281 if (fm == NULL) goto Error;
282
283 if (Buffer == NULL) {
284 cmsSignalError(ContextID, cmsERROR_READ, "Couldn't read profile from NULL pointer");
285 goto Error;
286 }
287
288 fm ->Block = (cmsUInt8Number*) _cmsMalloc(ContextID, size);
289 if (fm ->Block == NULL) {
290
291 _cmsFree(ContextID, fm);
292 _cmsFree(ContextID, iohandler);
293 cmsSignalError(ContextID, cmsERROR_READ, "Couldn't allocate %ld bytes for profile", size);
294 return NULL;
295 }
296
297
298 memmove(fm->Block, Buffer, size);
299 fm ->FreeBlockOnClose = TRUE;
300 fm ->Size = size;
301 fm ->Pointer = 0;
302 iohandler -> ReportedSize = size;
303 break;
304
305 case 'w':
306 fm = (FILEMEM*) _cmsMallocZero(ContextID, sizeof(FILEMEM));
307 if (fm == NULL) goto Error;
308
309 fm ->Block = (cmsUInt8Number*) Buffer;
310 fm ->FreeBlockOnClose = FALSE;
311 fm ->Size = size;
312 fm ->Pointer = 0;
313 iohandler -> ReportedSize = 0;
314 break;
315
316 default:
317 cmsSignalError(ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unknown access mode '%c'", *AccessMode);
318 return NULL;
319 }
320
321 iohandler ->ContextID = ContextID;
322 iohandler ->stream = (void*) fm;
323 iohandler ->UsedSpace = 0;
324 iohandler ->PhysicalFile[0] = 0;
325
326 iohandler ->Read = MemoryRead;
327 iohandler ->Seek = MemorySeek;
328 iohandler ->Close = MemoryClose;
329 iohandler ->Tell = MemoryTell;
330 iohandler ->Write = MemoryWrite;
331
332 return iohandler;
333
334 Error:
335 if (fm) _cmsFree(ContextID, fm);
336 if (iohandler) _cmsFree(ContextID, iohandler);
337 return NULL;
338 }
339
340 // File-based stream -------------------------------------------------------
341
342 // Read count elements of size bytes each. Return number of elements read
343 static
344 cmsUInt32Number FileRead(cmsIOHANDLER* iohandler, void *Buffer, cmsUInt32Number size, cmsUInt32Number count)
345 {
346 cmsUInt32Number nReaded = (cmsUInt32Number) fread(Buffer, size, count, (FILE*) iohandler->stream);
347
348 if (nReaded != count) {
349 cmsSignalError(iohandler ->ContextID, cmsERROR_FILE, "Read error. Got %d bytes, block should be of %d bytes", nReaded * size, count * size);
350 return 0;
351 }
352
353 return nReaded;
354 }
355
356 // Postion file pointer in the file
357 static
358 cmsBool FileSeek(cmsIOHANDLER* iohandler, cmsUInt32Number offset)
359 {
360 if (fseek((FILE*) iohandler ->stream, (long) offset, SEEK_SET) != 0) {
361
362 cmsSignalError(iohandler ->ContextID, cmsERROR_FILE, "Seek error; probably corrupted file");
363 return FALSE;
364 }
365
366 return TRUE;
367 }
368
369 // Returns file pointer position
370 static
371 cmsUInt32Number FileTell(cmsIOHANDLER* iohandler)
372 {
373 return (cmsUInt32Number) ftell((FILE*)iohandler ->stream);
374 }
375
376 // Writes data to stream, also keeps used space for further reference. Returns TRUE on success, FALSE on error
377 static
378 cmsBool FileWrite(cmsIOHANDLER* iohandler, cmsUInt32Number size, const void* Buffer)
379 {
380 if (size == 0) return TRUE; // We allow to write 0 bytes, but nothing is written
381
382 iohandler->UsedSpace += size;
383 return (fwrite(Buffer, size, 1, (FILE*) iohandler->stream) == 1);
384 }
385
386 // Closes the file
387 static
388 cmsBool FileClose(cmsIOHANDLER* iohandler)
389 {
390 if (fclose((FILE*) iohandler ->stream) != 0) return FALSE;
391 _cmsFree(iohandler ->ContextID, iohandler);
392 return TRUE;
393 }
394
395 // Create a iohandler for disk based files.
396 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromFile(cmsContext ContextID, const char* FileName, const char* AccessMode)
397 {
398 cmsIOHANDLER* iohandler = NULL;
399 FILE* fm = NULL;
400
401 _cmsAssert(FileName != NULL);
402 _cmsAssert(AccessMode != NULL);
403
404 iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
405 if (iohandler == NULL) return NULL;
406
407 switch (*AccessMode) {
408
409 case 'r':
410 fm = fopen(FileName, "rb");
411 if (fm == NULL) {
412 _cmsFree(ContextID, iohandler);
413 cmsSignalError(ContextID, cmsERROR_FILE, "File '%s' not found", FileName);
414 return NULL;
415 }
416 iohandler -> ReportedSize = (cmsUInt32Number) cmsfilelength(fm);
417 break;
418
419 case 'w':
420 fm = fopen(FileName, "wb");
421 if (fm == NULL) {
422 _cmsFree(ContextID, iohandler);
423 cmsSignalError(ContextID, cmsERROR_FILE, "Couldn't create '%s'", FileName);
424 return NULL;
425 }
426 iohandler -> ReportedSize = 0;
427 break;
428
429 default:
430 _cmsFree(ContextID, iohandler);
431 cmsSignalError(ContextID, cmsERROR_FILE, "Unknown access mode '%c'", *AccessMode);
432 return NULL;
433 }
434
435 iohandler ->ContextID = ContextID;
436 iohandler ->stream = (void*) fm;
437 iohandler ->UsedSpace = 0;
438
439 // Keep track of the original file
440 strncpy(iohandler -> PhysicalFile, FileName, sizeof(iohandler -> PhysicalFile)-1);
441 iohandler -> PhysicalFile[sizeof(iohandler -> PhysicalFile)-1] = 0;
442
443 iohandler ->Read = FileRead;
444 iohandler ->Seek = FileSeek;
445 iohandler ->Close = FileClose;
446 iohandler ->Tell = FileTell;
447 iohandler ->Write = FileWrite;
448
449 return iohandler;
450 }
451
452 // Create a iohandler for stream based files
453 cmsIOHANDLER* CMSEXPORT cmsOpenIOhandlerFromStream(cmsContext ContextID, FILE* Stream)
454 {
455 cmsIOHANDLER* iohandler = NULL;
456
457 iohandler = (cmsIOHANDLER*) _cmsMallocZero(ContextID, sizeof(cmsIOHANDLER));
458 if (iohandler == NULL) return NULL;
459
460 iohandler -> ContextID = ContextID;
461 iohandler -> stream = (void*) Stream;
462 iohandler -> UsedSpace = 0;
463 iohandler -> ReportedSize = (cmsUInt32Number) cmsfilelength(Stream);
464 iohandler -> PhysicalFile[0] = 0;
465
466 iohandler ->Read = FileRead;
467 iohandler ->Seek = FileSeek;
468 iohandler ->Close = FileClose;
469 iohandler ->Tell = FileTell;
470 iohandler ->Write = FileWrite;
471
472 return iohandler;
473 }
474
475
476
477 // Close an open IO handler
478 cmsBool CMSEXPORT cmsCloseIOhandler(cmsIOHANDLER* io)
479 {
480 return io -> Close(io);
481 }
482
483 // -------------------------------------------------------------------------------------------------------
484
485 cmsIOHANDLER* CMSEXPORT cmsGetProfileIOhandler(cmsHPROFILE hProfile)
486 {
487 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*)hProfile;
488
489 if (Icc == NULL) return NULL;
490 return Icc->IOhandler;
491 }
492
493 // Creates an empty structure holding all required parameters
494 cmsHPROFILE CMSEXPORT cmsCreateProfilePlaceholder(cmsContext ContextID)
495 {
496 time_t now = time(NULL);
497 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) _cmsMallocZero(ContextID, sizeof(_cmsICCPROFILE));
498 if (Icc == NULL) return NULL;
499
500 Icc ->ContextID = ContextID;
501
502 // Set it to empty
503 Icc -> TagCount = 0;
504
505 // Set default version
506 Icc ->Version = 0x02100000;
507
508 // Set creation date/time
509 memmove(&Icc ->Created, gmtime(&now), sizeof(Icc ->Created));
510
511 // Create a mutex if the user provided proper plugin. NULL otherwise
512 Icc ->UsrMutex = _cmsCreateMutex(ContextID);
513
514 // Return the handle
515 return (cmsHPROFILE) Icc;
516 }
517
518 cmsContext CMSEXPORT cmsGetProfileContextID(cmsHPROFILE hProfile)
519 {
520 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
521
522 if (Icc == NULL) return NULL;
523 return Icc -> ContextID;
524 }
525
526
527 // Return the number of tags
528 cmsInt32Number CMSEXPORT cmsGetTagCount(cmsHPROFILE hProfile)
529 {
530 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
531 if (Icc == NULL) return -1;
532
533 return Icc->TagCount;
534 }
535
536 // Return the tag signature of a given tag number
537 cmsTagSignature CMSEXPORT cmsGetTagSignature(cmsHPROFILE hProfile, cmsUInt32Number n)
538 {
539 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
540
541 if (n > Icc->TagCount) return (cmsTagSignature) 0; // Mark as not available
542 if (n >= MAX_TABLE_TAG) return (cmsTagSignature) 0; // As double check
543
544 return Icc ->TagNames[n];
545 }
546
547
548 static
549 int SearchOneTag(_cmsICCPROFILE* Profile, cmsTagSignature sig)
550 {
551 cmsUInt32Number i;
552
553 for (i=0; i < Profile -> TagCount; i++) {
554
555 if (sig == Profile -> TagNames[i])
556 return i;
557 }
558
559 return -1;
560 }
561
562 // Search for a specific tag in tag dictionary. Returns position or -1 if tag not found.
563 // If followlinks is turned on, then the position of the linked tag is returned
564 int _cmsSearchTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, cmsBool lFollowLinks)
565 {
566 int n;
567 cmsTagSignature LinkedSig;
568
569 do {
570
571 // Search for given tag in ICC profile directory
572 n = SearchOneTag(Icc, sig);
573 if (n < 0)
574 return -1; // Not found
575
576 if (!lFollowLinks)
577 return n; // Found, don't follow links
578
579 // Is this a linked tag?
580 LinkedSig = Icc ->TagLinked[n];
581
582 // Yes, follow link
583 if (LinkedSig != (cmsTagSignature) 0) {
584 sig = LinkedSig;
585 }
586
587 } while (LinkedSig != (cmsTagSignature) 0);
588
589 return n;
590 }
591
592 // Deletes a tag entry
593
594 static
595 void _cmsDeleteTagByPos(_cmsICCPROFILE* Icc, int i)
596 {
597 _cmsAssert(Icc != NULL);
598 _cmsAssert(i >= 0);
599
600
601 if (Icc -> TagPtrs[i] != NULL) {
602
603 // Free previous version
604 if (Icc ->TagSaveAsRaw[i]) {
605 _cmsFree(Icc ->ContextID, Icc ->TagPtrs[i]);
606 }
607 else {
608 cmsTagTypeHandler* TypeHandler = Icc ->TagTypeHandlers[i];
609
610 if (TypeHandler != NULL) {
611
612 cmsTagTypeHandler LocalTypeHandler = *TypeHandler;
613 LocalTypeHandler.ContextID = Icc ->ContextID; // As an additional parameter
614 LocalTypeHandler.ICCVersion = Icc ->Version;
615 LocalTypeHandler.FreePtr(&LocalTypeHandler, Icc -> TagPtrs[i]);
616 Icc ->TagPtrs[i] = NULL;
617 }
618 }
619
620 }
621 }
622
623
624 // Creates a new tag entry
625 static
626 cmsBool _cmsNewTag(_cmsICCPROFILE* Icc, cmsTagSignature sig, int* NewPos)
627 {
628 int i;
629
630 // Search for the tag
631 i = _cmsSearchTag(Icc, sig, FALSE);
632 if (i >= 0) {
633
634 // Already exists? delete it
635 _cmsDeleteTagByPos(Icc, i);
636 *NewPos = i;
637 }
638 else {
639
640 // No, make a new one
641
642 if (Icc -> TagCount >= MAX_TABLE_TAG) {
643 cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", MAX_TABLE_TAG);
644 return FALSE;
645 }
646
647 *NewPos = Icc ->TagCount;
648 Icc -> TagCount++;
649 }
650
651 return TRUE;
652 }
653
654
655 // Check existance
656 cmsBool CMSEXPORT cmsIsTag(cmsHPROFILE hProfile, cmsTagSignature sig)
657 {
658 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) (void*) hProfile;
659 return _cmsSearchTag(Icc, sig, FALSE) >= 0;
660 }
661
662
663
664 // Enforces that the profile version is per. spec.
665 // Operates on the big endian bytes from the profile.
666 // Called before converting to platform endianness.
667 // Byte 0 is BCD major version, so max 9.
668 // Byte 1 is 2 BCD digits, one per nibble.
669 // Reserved bytes 2 & 3 must be 0.
670 static
671 cmsUInt32Number _validatedVersion(cmsUInt32Number DWord)
672 {
673 cmsUInt8Number* pByte = (cmsUInt8Number*) &DWord;
674 cmsUInt8Number temp1;
675 cmsUInt8Number temp2;
676
677 if (*pByte > 0x09) *pByte = (cmsUInt8Number) 0x09;
678 temp1 = *(pByte+1) & 0xf0;
679 temp2 = *(pByte+1) & 0x0f;
680 if (temp1 > 0x90) temp1 = 0x90;
681 if (temp2 > 0x09) temp2 = 0x09;
682 *(pByte+1) = (cmsUInt8Number)(temp1 | temp2);
683 *(pByte+2) = (cmsUInt8Number)0;
684 *(pByte+3) = (cmsUInt8Number)0;
685
686 return DWord;
687 }
688
689 // Read profile header and validate it
690 cmsBool _cmsReadHeader(_cmsICCPROFILE* Icc)
691 {
692 cmsTagEntry Tag;
693 cmsICCHeader Header;
694 cmsUInt32Number i, j;
695 cmsUInt32Number HeaderSize;
696 cmsIOHANDLER* io = Icc ->IOhandler;
697 cmsUInt32Number TagCount;
698
699
700 // Read the header
701 if (io -> Read(io, &Header, sizeof(cmsICCHeader), 1) != 1) {
702 return FALSE;
703 }
704
705 // Validate file as an ICC profile
706 if (_cmsAdjustEndianess32(Header.magic) != cmsMagicNumber) {
707 cmsSignalError(Icc ->ContextID, cmsERROR_BAD_SIGNATURE, "not an ICC profile, invalid signature");
708 return FALSE;
709 }
710
711 // Adjust endianess of the used parameters
712 Icc -> DeviceClass = (cmsProfileClassSignature) _cmsAdjustEndianess32(Header.deviceClass);
713 Icc -> ColorSpace = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Header.colorSpace);
714 Icc -> PCS = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Header.pcs);
715
716 Icc -> RenderingIntent = _cmsAdjustEndianess32(Header.renderingIntent);
717 Icc -> flags = _cmsAdjustEndianess32(Header.flags);
718 Icc -> manufacturer = _cmsAdjustEndianess32(Header.manufacturer);
719 Icc -> model = _cmsAdjustEndianess32(Header.model);
720 Icc -> creator = _cmsAdjustEndianess32(Header.creator);
721
722 _cmsAdjustEndianess64(&Icc -> attributes, &Header.attributes);
723 Icc -> Version = _cmsAdjustEndianess32(_validatedVersion(Header.version));
724
725 // Get size as reported in header
726 HeaderSize = _cmsAdjustEndianess32(Header.size);
727
728 // Make sure HeaderSize is lower than profile size
729 if (HeaderSize >= Icc ->IOhandler ->ReportedSize)
730 HeaderSize = Icc ->IOhandler ->ReportedSize;
731
732
733 // Get creation date/time
734 _cmsDecodeDateTimeNumber(&Header.date, &Icc ->Created);
735
736 // The profile ID are 32 raw bytes
737 memmove(Icc ->ProfileID.ID32, Header.profileID.ID32, 16);
738
739
740 // Read tag directory
741 if (!_cmsReadUInt32Number(io, &TagCount)) return FALSE;
742 if (TagCount > MAX_TABLE_TAG) {
743
744 cmsSignalError(Icc ->ContextID, cmsERROR_RANGE, "Too many tags (%d)", TagCount);
745 return FALSE;
746 }
747
748
749 // Read tag directory
750 Icc -> TagCount = 0;
751 for (i=0; i < TagCount; i++) {
752
753 if (!_cmsReadUInt32Number(io, (cmsUInt32Number *) &Tag.sig)) return FALSE;
754 if (!_cmsReadUInt32Number(io, &Tag.offset)) return FALSE;
755 if (!_cmsReadUInt32Number(io, &Tag.size)) return FALSE;
756
757 // Perform some sanity check. Offset + size should fall inside file.
758 if (Tag.offset + Tag.size > HeaderSize ||
759 Tag.offset + Tag.size < Tag.offset)
760 continue;
761
762 Icc -> TagNames[Icc ->TagCount] = Tag.sig;
763 Icc -> TagOffsets[Icc ->TagCount] = Tag.offset;
764 Icc -> TagSizes[Icc ->TagCount] = Tag.size;
765
766 // Search for links
767 for (j=0; j < Icc ->TagCount; j++) {
768
769 if ((Icc ->TagOffsets[j] == Tag.offset) &&
770 (Icc ->TagSizes[j] == Tag.size)) {
771
772 Icc ->TagLinked[Icc ->TagCount] = Icc ->TagNames[j];
773 }
774
775 }
776
777 Icc ->TagCount++;
778 }
779
780 return TRUE;
781 }
782
783 // Saves profile header
784 cmsBool _cmsWriteHeader(_cmsICCPROFILE* Icc, cmsUInt32Number UsedSpace)
785 {
786 cmsICCHeader Header;
787 cmsUInt32Number i;
788 cmsTagEntry Tag;
789 cmsInt32Number Count = 0;
790
791 Header.size = _cmsAdjustEndianess32(UsedSpace);
792 Header.cmmId = _cmsAdjustEndianess32(lcmsSignature);
793 Header.version = _cmsAdjustEndianess32(Icc ->Version);
794
795 Header.deviceClass = (cmsProfileClassSignature) _cmsAdjustEndianess32(Icc -> DeviceClass);
796 Header.colorSpace = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Icc -> ColorSpace);
797 Header.pcs = (cmsColorSpaceSignature) _cmsAdjustEndianess32(Icc -> PCS);
798
799 // NOTE: in v4 Timestamp must be in UTC rather than in local time
800 _cmsEncodeDateTimeNumber(&Header.date, &Icc ->Created);
801
802 Header.magic = _cmsAdjustEndianess32(cmsMagicNumber);
803
804 #ifdef CMS_IS_WINDOWS_
805 Header.platform = (cmsPlatformSignature) _cmsAdjustEndianess32(cmsSigMicrosoft);
806 #else
807 Header.platform = (cmsPlatformSignature) _cmsAdjustEndianess32(cmsSigMacintosh);
808 #endif
809
810 Header.flags = _cmsAdjustEndianess32(Icc -> flags);
811 Header.manufacturer = _cmsAdjustEndianess32(Icc -> manufacturer);
812 Header.model = _cmsAdjustEndianess32(Icc -> model);
813
814 _cmsAdjustEndianess64(&Header.attributes, &Icc -> attributes);
815
816 // Rendering intent in the header (for embedded profiles)
817 Header.renderingIntent = _cmsAdjustEndianess32(Icc -> RenderingIntent);
818
819 // Illuminant is always D50
820 Header.illuminant.X = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(cmsD50_XYZ()->X));
821 Header.illuminant.Y = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(cmsD50_XYZ()->Y));
822 Header.illuminant.Z = _cmsAdjustEndianess32(_cmsDoubleTo15Fixed16(cmsD50_XYZ()->Z));
823
824 // Created by LittleCMS (that's me!)
825 Header.creator = _cmsAdjustEndianess32(lcmsSignature);
826
827 memset(&Header.reserved, 0, sizeof(Header.reserved));
828
829 // Set profile ID. Endianess is always big endian
830 memmove(&Header.profileID, &Icc ->ProfileID, 16);
831
832 // Dump the header
833 if (!Icc -> IOhandler->Write(Icc->IOhandler, sizeof(cmsICCHeader), &Header)) return FALSE;
834
835 // Saves Tag directory
836
837 // Get true count
838 for (i=0; i < Icc -> TagCount; i++) {
839 if (Icc ->TagNames[i] != 0)
840 Count++;
841 }
842
843 // Store number of tags
844 if (!_cmsWriteUInt32Number(Icc ->IOhandler, Count)) return FALSE;
845
846 for (i=0; i < Icc -> TagCount; i++) {
847
848 if (Icc ->TagNames[i] == 0) continue; // It is just a placeholder
849
850 Tag.sig = (cmsTagSignature) _cmsAdjustEndianess32((cmsInt32Number) Icc -> TagNames[i]);
851 Tag.offset = _cmsAdjustEndianess32((cmsInt32Number) Icc -> TagOffsets[i]);
852 Tag.size = _cmsAdjustEndianess32((cmsInt32Number) Icc -> TagSizes[i]);
853
854 if (!Icc ->IOhandler -> Write(Icc-> IOhandler, sizeof(cmsTagEntry), &Tag)) return FALSE;
855 }
856
857 return TRUE;
858 }
859
860 // ----------------------------------------------------------------------- Set/Get several struct members
861
862
863 cmsUInt32Number CMSEXPORT cmsGetHeaderRenderingIntent(cmsHPROFILE hProfile)
864 {
865 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
866 return Icc -> RenderingIntent;
867 }
868
869 void CMSEXPORT cmsSetHeaderRenderingIntent(cmsHPROFILE hProfile, cmsUInt32Number RenderingIntent)
870 {
871 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
872 Icc -> RenderingIntent = RenderingIntent;
873 }
874
875 cmsUInt32Number CMSEXPORT cmsGetHeaderFlags(cmsHPROFILE hProfile)
876 {
877 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
878 return (cmsUInt32Number) Icc -> flags;
879 }
880
881 void CMSEXPORT cmsSetHeaderFlags(cmsHPROFILE hProfile, cmsUInt32Number Flags)
882 {
883 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
884 Icc -> flags = (cmsUInt32Number) Flags;
885 }
886
887 cmsUInt32Number CMSEXPORT cmsGetHeaderManufacturer(cmsHPROFILE hProfile)
888 {
889 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
890 return Icc ->manufacturer;
891 }
892
893 void CMSEXPORT cmsSetHeaderManufacturer(cmsHPROFILE hProfile, cmsUInt32Number manufacturer)
894 {
895 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
896 Icc -> manufacturer = manufacturer;
897 }
898
899 cmsUInt32Number CMSEXPORT cmsGetHeaderCreator(cmsHPROFILE hProfile)
900 {
901 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
902 return Icc ->creator;
903 }
904
905 cmsUInt32Number CMSEXPORT cmsGetHeaderModel(cmsHPROFILE hProfile)
906 {
907 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
908 return Icc ->model;
909 }
910
911 void CMSEXPORT cmsSetHeaderModel(cmsHPROFILE hProfile, cmsUInt32Number model)
912 {
913 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
914 Icc -> model = model;
915 }
916
917 void CMSEXPORT cmsGetHeaderAttributes(cmsHPROFILE hProfile, cmsUInt64Number* Flags)
918 {
919 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
920 memmove(Flags, &Icc -> attributes, sizeof(cmsUInt64Number));
921 }
922
923 void CMSEXPORT cmsSetHeaderAttributes(cmsHPROFILE hProfile, cmsUInt64Number Flags)
924 {
925 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
926 memmove(&Icc -> attributes, &Flags, sizeof(cmsUInt64Number));
927 }
928
929 void CMSEXPORT cmsGetHeaderProfileID(cmsHPROFILE hProfile, cmsUInt8Number* ProfileID)
930 {
931 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
932 memmove(ProfileID, Icc ->ProfileID.ID8, 16);
933 }
934
935 void CMSEXPORT cmsSetHeaderProfileID(cmsHPROFILE hProfile, cmsUInt8Number* ProfileID)
936 {
937 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
938 memmove(&Icc -> ProfileID, ProfileID, 16);
939 }
940
941 cmsBool CMSEXPORT cmsGetHeaderCreationDateTime(cmsHPROFILE hProfile, struct tm *Dest)
942 {
943 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
944 memmove(Dest, &Icc ->Created, sizeof(struct tm));
945 return TRUE;
946 }
947
948 cmsColorSpaceSignature CMSEXPORT cmsGetPCS(cmsHPROFILE hProfile)
949 {
950 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
951 return Icc -> PCS;
952 }
953
954 void CMSEXPORT cmsSetPCS(cmsHPROFILE hProfile, cmsColorSpaceSignature pcs)
955 {
956 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
957 Icc -> PCS = pcs;
958 }
959
960 cmsColorSpaceSignature CMSEXPORT cmsGetColorSpace(cmsHPROFILE hProfile)
961 {
962 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
963 return Icc -> ColorSpace;
964 }
965
966 void CMSEXPORT cmsSetColorSpace(cmsHPROFILE hProfile, cmsColorSpaceSignature sig)
967 {
968 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
969 Icc -> ColorSpace = sig;
970 }
971
972 cmsProfileClassSignature CMSEXPORT cmsGetDeviceClass(cmsHPROFILE hProfile)
973 {
974 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
975 return Icc -> DeviceClass;
976 }
977
978 void CMSEXPORT cmsSetDeviceClass(cmsHPROFILE hProfile, cmsProfileClassSignature sig)
979 {
980 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
981 Icc -> DeviceClass = sig;
982 }
983
984 cmsUInt32Number CMSEXPORT cmsGetEncodedICCversion(cmsHPROFILE hProfile)
985 {
986 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
987 return Icc -> Version;
988 }
989
990 void CMSEXPORT cmsSetEncodedICCversion(cmsHPROFILE hProfile, cmsUInt32Number Version)
991 {
992 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
993 Icc -> Version = Version;
994 }
995
996 // Get an hexadecimal number with same digits as v
997 static
998 cmsUInt32Number BaseToBase(cmsUInt32Number in, int BaseIn, int BaseOut)
999 {
1000 char Buff[100];
1001 int i, len;
1002 cmsUInt32Number out;
1003
1004 for (len=0; in > 0 && len < 100; len++) {
1005
1006 Buff[len] = (char) (in % BaseIn);
1007 in /= BaseIn;
1008 }
1009
1010 for (i=len-1, out=0; i >= 0; --i) {
1011 out = out * BaseOut + Buff[i];
1012 }
1013
1014 return out;
1015 }
1016
1017 void CMSEXPORT cmsSetProfileVersion(cmsHPROFILE hProfile, cmsFloat64Number Version)
1018 {
1019 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1020
1021 // 4.2 -> 0x4200000
1022
1023 Icc -> Version = BaseToBase((cmsUInt32Number) floor(Version * 100.0 + 0.5), 10, 16) << 16;
1024 }
1025
1026 cmsFloat64Number CMSEXPORT cmsGetProfileVersion(cmsHPROFILE hProfile)
1027 {
1028 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1029 cmsUInt32Number n = Icc -> Version >> 16;
1030
1031 return BaseToBase(n, 16, 10) / 100.0;
1032 }
1033 // --------------------------------------------------------------------------------------------------------------
1034
1035
1036 // Create profile from IOhandler
1037 cmsHPROFILE CMSEXPORT cmsOpenProfileFromIOhandlerTHR(cmsContext ContextID, cmsIOHANDLER* io)
1038 {
1039 _cmsICCPROFILE* NewIcc;
1040 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1041
1042 if (hEmpty == NULL) return NULL;
1043
1044 NewIcc = (_cmsICCPROFILE*) hEmpty;
1045
1046 NewIcc ->IOhandler = io;
1047 if (!_cmsReadHeader(NewIcc)) goto Error;
1048 return hEmpty;
1049
1050 Error:
1051 cmsCloseProfile(hEmpty);
1052 return NULL;
1053 }
1054
1055 // Create profile from IOhandler
1056 cmsHPROFILE CMSEXPORT cmsOpenProfileFromIOhandler2THR(cmsContext ContextID, cmsIOHANDLER* io, cmsBool write)
1057 {
1058 _cmsICCPROFILE* NewIcc;
1059 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1060
1061 if (hEmpty == NULL) return NULL;
1062
1063 NewIcc = (_cmsICCPROFILE*) hEmpty;
1064
1065 NewIcc ->IOhandler = io;
1066 if (write) {
1067
1068 NewIcc -> IsWrite = TRUE;
1069 return hEmpty;
1070 }
1071
1072 if (!_cmsReadHeader(NewIcc)) goto Error;
1073 return hEmpty;
1074
1075 Error:
1076 cmsCloseProfile(hEmpty);
1077 return NULL;
1078 }
1079
1080
1081 // Create profile from disk file
1082 cmsHPROFILE CMSEXPORT cmsOpenProfileFromFileTHR(cmsContext ContextID, const char *lpFileName, const char *sAccess)
1083 {
1084 _cmsICCPROFILE* NewIcc;
1085 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1086
1087 if (hEmpty == NULL) return NULL;
1088
1089 NewIcc = (_cmsICCPROFILE*) hEmpty;
1090
1091 NewIcc ->IOhandler = cmsOpenIOhandlerFromFile(ContextID, lpFileName, sAccess);
1092 if (NewIcc ->IOhandler == NULL) goto Error;
1093
1094 if (*sAccess == 'W' || *sAccess == 'w') {
1095
1096 NewIcc -> IsWrite = TRUE;
1097
1098 return hEmpty;
1099 }
1100
1101 if (!_cmsReadHeader(NewIcc)) goto Error;
1102 return hEmpty;
1103
1104 Error:
1105 cmsCloseProfile(hEmpty);
1106 return NULL;
1107 }
1108
1109
1110 cmsHPROFILE CMSEXPORT cmsOpenProfileFromFile(const char *ICCProfile, const char *sAccess)
1111 {
1112 return cmsOpenProfileFromFileTHR(NULL, ICCProfile, sAccess);
1113 }
1114
1115
1116 cmsHPROFILE CMSEXPORT cmsOpenProfileFromStreamTHR(cmsContext ContextID, FILE* ICCProfile, const char *sAccess)
1117 {
1118 _cmsICCPROFILE* NewIcc;
1119 cmsHPROFILE hEmpty = cmsCreateProfilePlaceholder(ContextID);
1120
1121 if (hEmpty == NULL) return NULL;
1122
1123 NewIcc = (_cmsICCPROFILE*) hEmpty;
1124
1125 NewIcc ->IOhandler = cmsOpenIOhandlerFromStream(ContextID, ICCProfile);
1126 if (NewIcc ->IOhandler == NULL) goto Error;
1127
1128 if (*sAccess == 'w') {
1129
1130 NewIcc -> IsWrite = TRUE;
1131 return hEmpty;
1132 }
1133
1134 if (!_cmsReadHeader(NewIcc)) goto Error;
1135 return hEmpty;
1136
1137 Error:
1138 cmsCloseProfile(hEmpty);
1139 return NULL;
1140
1141 }
1142
1143 cmsHPROFILE CMSEXPORT cmsOpenProfileFromStream(FILE* ICCProfile, const char *sAccess)
1144 {
1145 return cmsOpenProfileFromStreamTHR(NULL, ICCProfile, sAccess);
1146 }
1147
1148
1149 // Open from memory block
1150 cmsHPROFILE CMSEXPORT cmsOpenProfileFromMemTHR(cmsContext ContextID, const void* MemPtr, cmsUInt32Number dwSize)
1151 {
1152 _cmsICCPROFILE* NewIcc;
1153 cmsHPROFILE hEmpty;
1154
1155 hEmpty = cmsCreateProfilePlaceholder(ContextID);
1156 if (hEmpty == NULL) return NULL;
1157
1158 NewIcc = (_cmsICCPROFILE*) hEmpty;
1159
1160 // Ok, in this case const void* is casted to void* just because open IO handler
1161 // shares read and writting modes. Don't abuse this feature!
1162 NewIcc ->IOhandler = cmsOpenIOhandlerFromMem(ContextID, (void*) MemPtr, dwSize, "r");
1163 if (NewIcc ->IOhandler == NULL) goto Error;
1164
1165 if (!_cmsReadHeader(NewIcc)) goto Error;
1166
1167 return hEmpty;
1168
1169 Error:
1170 cmsCloseProfile(hEmpty);
1171 return NULL;
1172 }
1173
1174 cmsHPROFILE CMSEXPORT cmsOpenProfileFromMem(const void* MemPtr, cmsUInt32Number dwSize)
1175 {
1176 return cmsOpenProfileFromMemTHR(NULL, MemPtr, dwSize);
1177 }
1178
1179
1180
1181 // Dump tag contents. If the profile is being modified, untouched tags are copied from FileOrig
1182 static
1183 cmsBool SaveTags(_cmsICCPROFILE* Icc, _cmsICCPROFILE* FileOrig)
1184 {
1185 cmsUInt8Number* Data;
1186 cmsUInt32Number i;
1187 cmsUInt32Number Begin;
1188 cmsIOHANDLER* io = Icc ->IOhandler;
1189 cmsTagDescriptor* TagDescriptor;
1190 cmsTagTypeSignature TypeBase;
1191 cmsTagTypeSignature Type;
1192 cmsTagTypeHandler* TypeHandler;
1193 cmsFloat64Number Version = cmsGetProfileVersion((cmsHPROFILE) Icc);
1194 cmsTagTypeHandler LocalTypeHandler;
1195
1196 for (i=0; i < Icc -> TagCount; i++) {
1197
1198 if (Icc ->TagNames[i] == 0) continue;
1199
1200 // Linked tags are not written
1201 if (Icc ->TagLinked[i] != (cmsTagSignature) 0) continue;
1202
1203 Icc -> TagOffsets[i] = Begin = io ->UsedSpace;
1204
1205 Data = (cmsUInt8Number*) Icc -> TagPtrs[i];
1206
1207 if (!Data) {
1208
1209 // Reach here if we are copying a tag from a disk-based ICC profile which has not been modified by user.
1210 // In this case a blind copy of the block data is performed
1211 if (FileOrig != NULL && Icc -> TagOffsets[i]) {
1212
1213 cmsUInt32Number TagSize = FileOrig -> TagSizes[i];
1214 cmsUInt32Number TagOffset = FileOrig -> TagOffsets[i];
1215 void* Mem;
1216
1217 if (!FileOrig ->IOhandler->Seek(FileOrig ->IOhandler, TagOffset)) return FALSE;
1218
1219 Mem = _cmsMalloc(Icc ->ContextID, TagSize);
1220 if (Mem == NULL) return FALSE;
1221
1222 if (FileOrig ->IOhandler->Read(FileOrig->IOhandler, Mem, TagSize, 1) != 1) return FALSE;
1223 if (!io ->Write(io, TagSize, Mem)) return FALSE;
1224 _cmsFree(Icc ->ContextID, Mem);
1225
1226 Icc -> TagSizes[i] = (io ->UsedSpace - Begin);
1227
1228
1229 // Align to 32 bit boundary.
1230 if (! _cmsWriteAlignment(io))
1231 return FALSE;
1232 }
1233
1234 continue;
1235 }
1236
1237
1238 // Should this tag be saved as RAW? If so, tagsizes should be specified in advance (no further cooking is done)
1239 if (Icc ->TagSaveAsRaw[i]) {
1240
1241 if (io -> Write(io, Icc ->TagSizes[i], Data) != 1) return FALSE;
1242 }
1243 else {
1244
1245 // Search for support on this tag
1246 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, Icc -> TagNames[i]);
1247 if (TagDescriptor == NULL) continue; // Unsupported, ignore it
1248
1249 if (TagDescriptor ->DecideType != NULL) {
1250
1251 Type = TagDescriptor ->DecideType(Version, Data);
1252 }
1253 else {
1254
1255 Type = TagDescriptor ->SupportedTypes[0];
1256 }
1257
1258 TypeHandler = _cmsGetTagTypeHandler(Icc->ContextID, Type);
1259
1260 if (TypeHandler == NULL) {
1261 cmsSignalError(Icc ->ContextID, cmsERROR_INTERNAL, "(Internal) no handler for tag %x", Icc -> TagNames[i]);
1262 continue;
1263 }
1264
1265 TypeBase = TypeHandler ->Signature;
1266 if (!_cmsWriteTypeBase(io, TypeBase))
1267 return FALSE;
1268
1269 LocalTypeHandler = *TypeHandler;
1270 LocalTypeHandler.ContextID = Icc ->ContextID;
1271 LocalTypeHandler.ICCVersion = Icc ->Version;
1272 if (!LocalTypeHandler.WritePtr(&LocalTypeHandler, io, Data, TagDescriptor ->ElemCount)) {
1273
1274 char String[5];
1275
1276 _cmsTagSignature2String(String, (cmsTagSignature) TypeBase);
1277 cmsSignalError(Icc ->ContextID, cmsERROR_WRITE, "Couldn't write type '%s'", String);
1278 return FALSE;
1279 }
1280 }
1281
1282
1283 Icc -> TagSizes[i] = (io ->UsedSpace - Begin);
1284
1285 // Align to 32 bit boundary.
1286 if (! _cmsWriteAlignment(io))
1287 return FALSE;
1288 }
1289
1290
1291 return TRUE;
1292 }
1293
1294
1295 // Fill the offset and size fields for all linked tags
1296 static
1297 cmsBool SetLinks( _cmsICCPROFILE* Icc)
1298 {
1299 cmsUInt32Number i;
1300
1301 for (i=0; i < Icc -> TagCount; i++) {
1302
1303 cmsTagSignature lnk = Icc ->TagLinked[i];
1304 if (lnk != (cmsTagSignature) 0) {
1305
1306 int j = _cmsSearchTag(Icc, lnk, FALSE);
1307 if (j >= 0) {
1308
1309 Icc ->TagOffsets[i] = Icc ->TagOffsets[j];
1310 Icc ->TagSizes[i] = Icc ->TagSizes[j];
1311 }
1312
1313 }
1314 }
1315
1316 return TRUE;
1317 }
1318
1319 // Low-level save to IOHANDLER. It returns the number of bytes used to
1320 // store the profile, or zero on error. io may be NULL and in this case
1321 // no data is written--only sizes are calculated
1322 cmsUInt32Number CMSEXPORT cmsSaveProfileToIOhandler(cmsHPROFILE hProfile, cmsIOHANDLER* io)
1323 {
1324 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1325 _cmsICCPROFILE Keep;
1326 cmsIOHANDLER* PrevIO = NULL;
1327 cmsUInt32Number UsedSpace;
1328 cmsContext ContextID;
1329
1330 _cmsAssert(hProfile != NULL);
1331
1332 memmove(&Keep, Icc, sizeof(_cmsICCPROFILE));
1333
1334 ContextID = cmsGetProfileContextID(hProfile);
1335 PrevIO = Icc ->IOhandler = cmsOpenIOhandlerFromNULL(ContextID);
1336 if (PrevIO == NULL) return 0;
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)) return 0;
1357
1358 return UsedSpace;
1359
1360
1361 Error:
1362 cmsCloseIOhandler(PrevIO);
1363 memmove(Icc, &Keep, sizeof(_cmsICCPROFILE));
1364 return 0;
1365 }
1366
1367
1368 // Low-level save to disk.
1369 cmsBool CMSEXPORT cmsSaveProfileToFile(cmsHPROFILE hProfile, const char* FileName)
1370 {
1371 cmsContext ContextID = cmsGetProfileContextID(hProfile);
1372 cmsIOHANDLER* io = cmsOpenIOhandlerFromFile(ContextID, FileName, "w");
1373 cmsBool rc;
1374
1375 if (io == NULL) return FALSE;
1376
1377 rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
1378 rc &= cmsCloseIOhandler(io);
1379
1380 if (rc == FALSE) { // remove() is C99 per 7.19.4.1
1381 remove(FileName); // We have to IGNORE return value in this case
1382 }
1383 return rc;
1384 }
1385
1386 // Same as anterior, but for streams
1387 cmsBool CMSEXPORT cmsSaveProfileToStream(cmsHPROFILE hProfile, FILE* Stream)
1388 {
1389 cmsBool rc;
1390 cmsContext ContextID = cmsGetProfileContextID(hProfile);
1391 cmsIOHANDLER* io = cmsOpenIOhandlerFromStream(ContextID, Stream);
1392
1393 if (io == NULL) return FALSE;
1394
1395 rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
1396 rc &= cmsCloseIOhandler(io);
1397
1398 return rc;
1399 }
1400
1401
1402 // Same as anterior, but for memory blocks. In this case, a NULL as MemPtr means calculate needed space only
1403 cmsBool CMSEXPORT cmsSaveProfileToMem(cmsHPROFILE hProfile, void *MemPtr, cmsUInt32Number* BytesNeeded)
1404 {
1405 cmsBool rc;
1406 cmsIOHANDLER* io;
1407 cmsContext ContextID = cmsGetProfileContextID(hProfile);
1408
1409 _cmsAssert(BytesNeeded != NULL);
1410
1411 // Should we just calculate the needed space?
1412 if (MemPtr == NULL) {
1413
1414 *BytesNeeded = cmsSaveProfileToIOhandler(hProfile, NULL);
1415 return (*BytesNeeded == 0) ? FALSE : TRUE;
1416 }
1417
1418 // That is a real write operation
1419 io = cmsOpenIOhandlerFromMem(ContextID, MemPtr, *BytesNeeded, "w");
1420 if (io == NULL) return FALSE;
1421
1422 rc = (cmsSaveProfileToIOhandler(hProfile, io) != 0);
1423 rc &= cmsCloseIOhandler(io);
1424
1425 return rc;
1426 }
1427
1428
1429
1430 // Closes a profile freeing any involved resources
1431 cmsBool CMSEXPORT cmsCloseProfile(cmsHPROFILE hProfile)
1432 {
1433 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1434 cmsBool rc = TRUE;
1435 cmsUInt32Number i;
1436
1437 if (!Icc) return FALSE;
1438
1439 // Was open in write mode?
1440 if (Icc ->IsWrite) {
1441
1442 Icc ->IsWrite = FALSE; // Assure no further writting
1443 rc &= cmsSaveProfileToFile(hProfile, Icc ->IOhandler->PhysicalFile);
1444 }
1445
1446 for (i=0; i < Icc -> TagCount; i++) {
1447
1448 if (Icc -> TagPtrs[i]) {
1449
1450 cmsTagTypeHandler* TypeHandler = Icc ->TagTypeHandlers[i];
1451
1452 if (TypeHandler != NULL) {
1453 cmsTagTypeHandler LocalTypeHandler = *TypeHandler;
1454
1455 LocalTypeHandler.ContextID = Icc ->ContextID; // As an additional parameters
1456 LocalTypeHandler.ICCVersion = Icc ->Version;
1457 LocalTypeHandler.FreePtr(&LocalTypeHandler, Icc -> TagPtrs[i]);
1458 }
1459 else
1460 _cmsFree(Icc ->ContextID, Icc ->TagPtrs[i]);
1461 }
1462 }
1463
1464 if (Icc ->IOhandler != NULL) {
1465 rc &= cmsCloseIOhandler(Icc->IOhandler);
1466 }
1467
1468 _cmsDestroyMutex(Icc->ContextID, Icc->UsrMutex);
1469
1470 _cmsFree(Icc ->ContextID, Icc); // Free placeholder memory
1471
1472 return rc;
1473 }
1474
1475
1476 // -------------------------------------------------------------------------------------------------------------------
1477
1478
1479 // Returns TRUE if a given tag is supported by a plug-in
1480 static
1481 cmsBool IsTypeSupported(cmsTagDescriptor* TagDescriptor, cmsTagTypeSignature Type)
1482 {
1483 cmsUInt32Number i, nMaxTypes;
1484
1485 nMaxTypes = TagDescriptor->nSupportedTypes;
1486 if (nMaxTypes >= MAX_TYPES_IN_LCMS_PLUGIN)
1487 nMaxTypes = MAX_TYPES_IN_LCMS_PLUGIN;
1488
1489 for (i=0; i < nMaxTypes; i++) {
1490 if (Type == TagDescriptor ->SupportedTypes[i]) return TRUE;
1491 }
1492
1493 return FALSE;
1494 }
1495
1496
1497 // That's the main read function
1498 void* CMSEXPORT cmsReadTag(cmsHPROFILE hProfile, cmsTagSignature sig)
1499 {
1500 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1501 cmsIOHANDLER* io = Icc ->IOhandler;
1502 cmsTagTypeHandler* TypeHandler;
1503 cmsTagTypeHandler LocalTypeHandler;
1504 cmsTagDescriptor* TagDescriptor;
1505 cmsTagTypeSignature BaseType;
1506 cmsUInt32Number Offset, TagSize;
1507 cmsUInt32Number ElemCount;
1508 int n;
1509
1510 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return NULL;
1511
1512 n = _cmsSearchTag(Icc, sig, TRUE);
1513 if (n < 0) goto Error; // Not found, return NULL
1514
1515
1516 // If the element is already in memory, return the pointer
1517 if (Icc -> TagPtrs[n]) {
1518
1519 if (Icc ->TagSaveAsRaw[n]) goto Error; // We don't support read raw tags as cooked
1520
1521 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1522 return Icc -> TagPtrs[n];
1523 }
1524
1525 // We need to read it. Get the offset and size to the file
1526 Offset = Icc -> TagOffsets[n];
1527 TagSize = Icc -> TagSizes[n];
1528
1529 // Seek to its location
1530 if (!io -> Seek(io, Offset))
1531 goto Error;
1532
1533 // Search for support on this tag
1534 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, sig);
1535 if (TagDescriptor == NULL) {
1536
1537 char String[5];
1538
1539 _cmsTagSignature2String(String, sig);
1540
1541 // An unknown element was found.
1542 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unknown tag type '%s' found.", String);
1543 goto Error; // Unsupported.
1544 }
1545
1546 // if supported, get type and check if in list
1547 BaseType = _cmsReadTypeBase(io);
1548 if (BaseType == 0) goto Error;
1549
1550 if (!IsTypeSupported(TagDescriptor, BaseType)) goto Error;
1551
1552 TagSize -= 8; // Alredy read by the type base logic
1553
1554 // Get type handler
1555 TypeHandler = _cmsGetTagTypeHandler(Icc ->ContextID, BaseType);
1556 if (TypeHandler == NULL) goto Error;
1557 LocalTypeHandler = *TypeHandler;
1558
1559
1560 // Read the tag
1561 Icc -> TagTypeHandlers[n] = TypeHandler;
1562
1563 LocalTypeHandler.ContextID = Icc ->ContextID;
1564 LocalTypeHandler.ICCVersion = Icc ->Version;
1565 Icc -> TagPtrs[n] = LocalTypeHandler.ReadPtr(&LocalTypeHandler, io, &ElemCount, TagSize);
1566
1567 // The tag type is supported, but something wrong happend and we cannot read the tag.
1568 // let know the user about this (although it is just a warning)
1569 if (Icc -> TagPtrs[n] == NULL) {
1570
1571 char String[5];
1572
1573 _cmsTagSignature2String(String, sig);
1574 cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "Corrupted tag '%s'", String);
1575 goto Error;
1576 }
1577
1578 // This is a weird error that may be a symptom of something more serious, the number of
1579 // stored item is actually less than the number of required elements.
1580 if (ElemCount < TagDescriptor ->ElemCount) {
1581
1582 char String[5];
1583
1584 _cmsTagSignature2String(String, sig);
1585 cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "'%s' Inconsistent number of items: expected %d, got %d",
1586 String, TagDescriptor ->ElemCount, ElemCount);
1587 }
1588
1589
1590 // Return the data
1591 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1592 return Icc -> TagPtrs[n];
1593
1594
1595 // Return error and unlock tha data
1596 Error:
1597 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1598 return NULL;
1599 }
1600
1601
1602 // Get true type of data
1603 cmsTagTypeSignature _cmsGetTagTrueType(cmsHPROFILE hProfile, cmsTagSignature sig)
1604 {
1605 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1606 cmsTagTypeHandler* TypeHandler;
1607 int n;
1608
1609 // Search for given tag in ICC profile directory
1610 n = _cmsSearchTag(Icc, sig, TRUE);
1611 if (n < 0) return (cmsTagTypeSignature) 0; // Not found, return NULL
1612
1613 // Get the handler. The true type is there
1614 TypeHandler = Icc -> TagTypeHandlers[n];
1615 return TypeHandler ->Signature;
1616 }
1617
1618
1619 // Write a single tag. This just keeps track of the tak into a list of "to be written". If the tag is already
1620 // in that list, the previous version is deleted.
1621 cmsBool CMSEXPORT cmsWriteTag(cmsHPROFILE hProfile, cmsTagSignature sig, const void* data)
1622 {
1623 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1624 cmsTagTypeHandler* TypeHandler = NULL;
1625 cmsTagTypeHandler LocalTypeHandler;
1626 cmsTagDescriptor* TagDescriptor = NULL;
1627 cmsTagTypeSignature Type;
1628 int i;
1629 cmsFloat64Number Version;
1630 char TypeString[5], SigString[5];
1631
1632 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return FALSE;
1633
1634 // To delete tags.
1635 if (data == NULL) {
1636
1637 // Delete the tag
1638 i = _cmsSearchTag(Icc, sig, FALSE);
1639 if (i >= 0) {
1640
1641 // Use zero as a mark of deleted
1642 _cmsDeleteTagByPos(Icc, i);
1643 Icc ->TagNames[i] = (cmsTagSignature) 0;
1644 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1645 return TRUE;
1646 }
1647 // Didn't find the tag
1648 goto Error;
1649 }
1650
1651 if (!_cmsNewTag(Icc, sig, &i)) goto Error;
1652
1653 // This is not raw
1654 Icc ->TagSaveAsRaw[i] = FALSE;
1655
1656 // This is not a link
1657 Icc ->TagLinked[i] = (cmsTagSignature) 0;
1658
1659 // Get information about the TAG.
1660 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, sig);
1661 if (TagDescriptor == NULL){
1662 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported tag '%x'", sig);
1663 goto Error;
1664 }
1665
1666
1667 // Now we need to know which type to use. It depends on the version.
1668 Version = cmsGetProfileVersion(hProfile);
1669
1670 if (TagDescriptor ->DecideType != NULL) {
1671
1672 // Let the tag descriptor to decide the type base on depending on
1673 // the data. This is useful for example on parametric curves, where
1674 // curves specified by a table cannot be saved as parametric and needs
1675 // to be casted to single v2-curves, even on v4 profiles.
1676
1677 Type = TagDescriptor ->DecideType(Version, data);
1678 }
1679 else {
1680
1681 Type = TagDescriptor ->SupportedTypes[0];
1682 }
1683
1684 // Does the tag support this type?
1685 if (!IsTypeSupported(TagDescriptor, Type)) {
1686
1687 _cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
1688 _cmsTagSignature2String(SigString, sig);
1689
1690 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported type '%s' for tag '%s'", TypeString, SigString);
1691 goto Error;
1692 }
1693
1694 // Does we have a handler for this type?
1695 TypeHandler = _cmsGetTagTypeHandler(Icc->ContextID, Type);
1696 if (TypeHandler == NULL) {
1697
1698 _cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
1699 _cmsTagSignature2String(SigString, sig);
1700
1701 cmsSignalError(Icc ->ContextID, cmsERROR_UNKNOWN_EXTENSION, "Unsupported type '%s' for tag '%s'", TypeString, SigString);
1702 goto Error; // Should never happen
1703 }
1704
1705
1706 // Fill fields on icc structure
1707 Icc ->TagTypeHandlers[i] = TypeHandler;
1708 Icc ->TagNames[i] = sig;
1709 Icc ->TagSizes[i] = 0;
1710 Icc ->TagOffsets[i] = 0;
1711
1712 LocalTypeHandler = *TypeHandler;
1713 LocalTypeHandler.ContextID = Icc ->ContextID;
1714 LocalTypeHandler.ICCVersion = Icc ->Version;
1715 Icc ->TagPtrs[i] = LocalTypeHandler.DupPtr(&LocalTypeHandler, data, TagDescriptor ->ElemCount);
1716
1717 if (Icc ->TagPtrs[i] == NULL) {
1718
1719 _cmsTagSignature2String(TypeString, (cmsTagSignature) Type);
1720 _cmsTagSignature2String(SigString, sig);
1721 cmsSignalError(Icc ->ContextID, cmsERROR_CORRUPTION_DETECTED, "Malformed struct in type '%s' for tag '%s'", TypeString, SigString);
1722
1723 goto Error;
1724 }
1725
1726 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1727 return TRUE;
1728
1729 Error:
1730 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1731 return FALSE;
1732
1733 }
1734
1735 // Read and write raw data. The only way those function would work and keep consistence with normal read and write
1736 // is to do an additional step of serialization. That means, readRaw would issue a normal read and then convert the obtained
1737 // data to raw bytes by using the "write" serialization logic. And vice-versa. I know this may end in situations where
1738 // raw data written does not exactly correspond with the raw data proposed to cmsWriteRaw data, but this approach allows
1739 // to write a tag as raw data and the read it as handled.
1740
1741 cmsInt32Number CMSEXPORT cmsReadRawTag(cmsHPROFILE hProfile, cmsTagSignature sig, void* data, cmsUInt32Number BufferSize)
1742 {
1743 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1744 void *Object;
1745 int i;
1746 cmsIOHANDLER* MemIO;
1747 cmsTagTypeHandler* TypeHandler = NULL;
1748 cmsTagTypeHandler LocalTypeHandler;
1749 cmsTagDescriptor* TagDescriptor = NULL;
1750 cmsUInt32Number rc;
1751 cmsUInt32Number Offset, TagSize;
1752
1753 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return 0;
1754
1755 // Search for given tag in ICC profile directory
1756 i = _cmsSearchTag(Icc, sig, TRUE);
1757 if (i < 0) goto Error; // Not found,
1758
1759 // It is already read?
1760 if (Icc -> TagPtrs[i] == NULL) {
1761
1762 // No yet, get original position
1763 Offset = Icc ->TagOffsets[i];
1764 TagSize = Icc ->TagSizes[i];
1765
1766 // read the data directly, don't keep copy
1767 if (data != NULL) {
1768
1769 if (BufferSize < TagSize)
1770 TagSize = BufferSize;
1771
1772 if (!Icc ->IOhandler ->Seek(Icc ->IOhandler, Offset)) goto Error;
1773 if (!Icc ->IOhandler ->Read(Icc ->IOhandler, data, 1, TagSize)) goto Error;
1774
1775 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1776 return TagSize;
1777 }
1778
1779 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1780 return Icc ->TagSizes[i];
1781 }
1782
1783 // The data has been already read, or written. But wait!, maybe the user choosed to save as
1784 // raw data. In this case, return the raw data directly
1785 if (Icc ->TagSaveAsRaw[i]) {
1786
1787 if (data != NULL) {
1788
1789 TagSize = Icc ->TagSizes[i];
1790 if (BufferSize < TagSize)
1791 TagSize = BufferSize;
1792
1793 memmove(data, Icc ->TagPtrs[i], TagSize);
1794
1795 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1796 return TagSize;
1797 }
1798
1799 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1800 return Icc ->TagSizes[i];
1801 }
1802
1803 // Already readed, or previously set by cmsWriteTag(). We need to serialize that
1804 // data to raw in order to maintain consistency.
1805
1806 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1807 Object = cmsReadTag(hProfile, sig);
1808 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return 0;
1809
1810 if (Object == NULL) goto Error;
1811
1812 // Now we need to serialize to a memory block: just use a memory iohandler
1813
1814 if (data == NULL) {
1815 MemIO = cmsOpenIOhandlerFromNULL(cmsGetProfileContextID(hProfile));
1816 } else{
1817 MemIO = cmsOpenIOhandlerFromMem(cmsGetProfileContextID(hProfile), data, BufferSize, "w");
1818 }
1819 if (MemIO == NULL) goto Error;
1820
1821 // Obtain type handling for the tag
1822 TypeHandler = Icc ->TagTypeHandlers[i];
1823 TagDescriptor = _cmsGetTagDescriptor(Icc-> ContextID, sig);
1824 if (TagDescriptor == NULL) {
1825 cmsCloseIOhandler(MemIO);
1826 goto Error;
1827 }
1828
1829 if (TypeHandler == NULL) goto Error;
1830
1831 // Serialize
1832 LocalTypeHandler = *TypeHandler;
1833 LocalTypeHandler.ContextID = Icc ->ContextID;
1834 LocalTypeHandler.ICCVersion = Icc ->Version;
1835
1836 if (!_cmsWriteTypeBase(MemIO, TypeHandler ->Signature)) {
1837 cmsCloseIOhandler(MemIO);
1838 goto Error;
1839 }
1840
1841 if (!LocalTypeHandler.WritePtr(&LocalTypeHandler, MemIO, Object, TagDescriptor ->ElemCount)) {
1842 cmsCloseIOhandler(MemIO);
1843 goto Error;
1844 }
1845
1846 // Get Size and close
1847 rc = MemIO ->Tell(MemIO);
1848 cmsCloseIOhandler(MemIO); // Ignore return code this time
1849
1850 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1851 return rc;
1852
1853 Error:
1854 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1855 return 0;
1856 }
1857
1858 // Similar to the anterior. This function allows to write directly to the ICC profile any data, without
1859 // checking anything. As a rule, mixing Raw with cooked doesn't work, so writting a tag as raw and then reading
1860 // it as cooked without serializing does result into an error. If that is what you want, you will need to dump
1861 // the profile to memry or disk and then reopen it.
1862 cmsBool CMSEXPORT cmsWriteRawTag(cmsHPROFILE hProfile, cmsTagSignature sig, const void* data, cmsUInt32Number Size)
1863 {
1864 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1865 int i;
1866
1867 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return 0;
1868
1869 if (!_cmsNewTag(Icc, sig, &i)) {
1870 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1871 return FALSE;
1872 }
1873
1874 // Mark the tag as being written as RAW
1875 Icc ->TagSaveAsRaw[i] = TRUE;
1876 Icc ->TagNames[i] = sig;
1877 Icc ->TagLinked[i] = (cmsTagSignature) 0;
1878
1879 // Keep a copy of the block
1880 Icc ->TagPtrs[i] = _cmsDupMem(Icc ->ContextID, data, Size);
1881 Icc ->TagSizes[i] = Size;
1882
1883 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1884
1885 if (Icc->TagPtrs[i] == NULL) {
1886 Icc->TagNames[i] = 0;
1887 return FALSE;
1888 }
1889 return TRUE;
1890 }
1891
1892 // Using this function you can collapse several tag entries to the same block in the profile
1893 cmsBool CMSEXPORT cmsLinkTag(cmsHPROFILE hProfile, cmsTagSignature sig, cmsTagSignature dest)
1894 {
1895 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1896 int i;
1897
1898 if (!_cmsLockMutex(Icc->ContextID, Icc ->UsrMutex)) return FALSE;
1899
1900 if (!_cmsNewTag(Icc, sig, &i)) {
1901 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1902 return FALSE;
1903 }
1904
1905 // Keep necessary information
1906 Icc ->TagSaveAsRaw[i] = FALSE;
1907 Icc ->TagNames[i] = sig;
1908 Icc ->TagLinked[i] = dest;
1909
1910 Icc ->TagPtrs[i] = NULL;
1911 Icc ->TagSizes[i] = 0;
1912 Icc ->TagOffsets[i] = 0;
1913
1914 _cmsUnlockMutex(Icc->ContextID, Icc ->UsrMutex);
1915 return TRUE;
1916 }
1917
1918
1919 // Returns the tag linked to sig, in the case two tags are sharing same resource
1920 cmsTagSignature CMSEXPORT cmsTagLinkedTo(cmsHPROFILE hProfile, cmsTagSignature sig)
1921 {
1922 _cmsICCPROFILE* Icc = (_cmsICCPROFILE*) hProfile;
1923 int i;
1924
1925 // Search for given tag in ICC profile directory
1926 i = _cmsSearchTag(Icc, sig, FALSE);
1927 if (i < 0) return (cmsTagSignature) 0; // Not found, return 0
1928
1929 return Icc -> TagLinked[i];
1930 }