summaryrefslogtreecommitdiff
path: root/xicc/revfix.c
blob: 59fdd0ebcc5a23ca3d200eac6bf5306b267ecc01 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796

/* 
 * ICC reprocess to give true BtoA1 by inverting
 * the AtoB1 table, and also correct the neutral
 * axis of the BtoA0 and BtoA2 tables.
 *
 *
 * Author:  Graeme W. Gill
 * Date:    9/7/00
 * Version: 1.00
 *
 * Copyright 2000 Graeme W. Gill
 * Please refer to License.txt file for details.
 */

/* TTBD:
 *
 * Add support for proper gamut mapping, just like profile,
 * or deprecate revfix by modifying profile to work from
 * an existing profile ?
 * 
 * Remove the auxiliary fixup stuff when we have implemented
 * optimised separations.
 *
 */

#include <stdio.h>
#include <stdlib.h>
#include <stdarg.h>
#include <fcntl.h>
#include <string.h>
#include <math.h>
#include "copyright.h"
#include "aconfig.h"
#include "numlib.h"
#include "xicc.h"

#define USE_CAM_CLIP_OPT		/* Clip in CAM Jab space rather than Lab */
#undef DEBUG		/* Print each value changed */

void usage(void) {
	fprintf(stderr,"Invert AtoB1 to make BtoA1 for CMYK profiles, Version %s\n",ARGYLL_VERSION_STR);
	fprintf(stderr,"Author: Graeme W. Gill, licensed under the AGPL Version 3\n");
	fprintf(stderr,"usage: revfix [-options] iccin iccout\n");
	fprintf(stderr," -v             Verbose\n");
	fprintf(stderr," -0             Process perceptual\n");
	fprintf(stderr," -1             Process absolute/relative colorimetric\n");
	fprintf(stderr," -2             Process saturation\n");
	fprintf(stderr," -r res         Override BtoA1 Clut res\n");
	fprintf(stderr," -k [ezhxr]     e = same K as existing BtoA table (def)\n");
	fprintf(stderr,"                z = zero, h = 0.5 K, x = max K, r = ramp K\n");
	fprintf(stderr," -k p stle stpo enle enpo shape\n");
	fprintf(stderr,"                p = curve parameters\n");
	fprintf(stderr,"                stle: K level at White 0.0 - 1.0\n");
	fprintf(stderr,"                stpo: start point of transition Wh 0.0 - Bk 1.0\n");
	fprintf(stderr,"                enpo: End point of transition Wh 0.0 - Bk 1.0\n");
	fprintf(stderr,"                enle: K level at Black 0.0 - 1.0\n");
	fprintf(stderr,"                shape: 1.0 = straight, 0.0-1.0 concave, 1.0-2.0 convex\n");
	fprintf(stderr," -K parameters  Same as -k, but target is K locus rather than K value itself\n");
	fprintf(stderr," -l tlimit      set total ink limit, 0 - 400%% (estimate by default)\n");
	fprintf(stderr," -L klimit      set black ink limit, 0 - 100%% (estimate by default)\n");
	fprintf(stderr," -p absprof     Include abstract profile in output tables\n");
//	fprintf(stderr," -s             Use internal optimized separation for CMYK\n");
	exit(1);
}

/* ------------------------------------------- */
/* structure to support icc Lut initialisation calbacks */

/* ~~~Note that  we're not coping with a matrix or XYZ PCS properly here. */

struct _callback {
	int verb;			/* Verbosity */
	int total, count, last;	/* Progress count information */
	icColorSpaceSignature pcsspace;
	int inking;			/* k inking algorithm */
	icxLuLut *BtoA;		/* BtoA of table being processed */
	icxLuLut *AtoB;		/* AtoB of table being processed */
	icxLuLut *AtoB1;	/* AtoB of colorimetric table */

	icRenderingIntent abs_intent;	/* Desired abstract profile rendering intent */
	icxLuBase *abs_luo;				/* abstract profile tranform in PCS, NULL if none */

}; typedef struct _callback callback;


/* Utility to handle abstract profile application to PCS */
/* PCS in creating output table is always XYZ or Lab relative colorimetric, */
/* and abstract profile is absolute or relative, and will be */
/* XYZ if absolute, and PCS if relative. */
static void do_abstract(callback *p, double out[3], double in[3]) {
	out[0] = in[0];
	out[1] = in[1];
	out[2] = in[2];

//printf("~1 do_abstract got %f %f %f\n",in[0],in[1],in[2]);

	if (p->abs_intent == icAbsoluteColorimetric) {
		if (p->pcsspace == icSigLabData) {
			icmLab2XYZ(&icmD50, out, out);
//printf("~1 after Lab 2 XYZ got %f %f %f\n",out[0],out[1],out[2]);
		}
		p->AtoB1->plu->XYZ_Rel2Abs(p->AtoB1->plu, out, out);
//printf("~1 after rel to abs got %f %f %f\n",out[0],out[1],out[2]);
	}

	p->abs_luo->lookup(p->abs_luo, out, out);
//printf("~1 after abs_luo got %f %f %f\n",out[0],out[1],out[2]);

	if (p->abs_intent == icAbsoluteColorimetric) {
		p->AtoB1->plu->XYZ_Abs2Rel(p->AtoB1->plu, out, out);
//printf("~1 after abs2rel got %f %f %f\n",out[0],out[1],out[2]);
		if (p->pcsspace == icSigLabData) {
			icmXYZ2Lab(&icmD50, out, out);
//printf("~1 after XYZ to Lab got %f %f %f\n",out[0],out[1],out[2]);
		}
	}
//printf("~1 returning %f %f %f\n\n",out[0],out[1],out[2]);
}

/* - - - - - - - - - */
/* New input table */
void Lab_Labp(void *cntx, double out[3], double in[3]) {
	callback *p = (callback *)cntx;

#ifdef DEBUG
	printf("Got Lab %f %f %f\n",in[0],in[1],in[2]);
#endif
	if (p->AtoB != p->AtoB1) {
		/* Non-colorimetric, use existing input table */
		if (p->BtoA->input(p->BtoA, out, in) > 1)
			error ("%d, %s",p->BtoA->pp->errc,p->BtoA->pp->err);
	} else {
		/* Colorimetric, use inverse AtoB output */
		if (p->AtoB1->inv_output(p->AtoB1, out, in) > 1)
			error ("%d, %s",p->AtoB1->pp->errc,p->AtoB1->pp->err);
	}
#ifdef DEBUG
	printf("New Lab' %f %f %f\n",out[0],out[1],out[2]);
#endif
}

/* - - - - */
/*  clut  */

/* Normal CLUT routine */
void Labp_CMYKp(void *cntx, double out[4], double in[3]) {
	double temp[4], targetk = 0.0;
	int rv;
	callback *p = (callback *)cntx;

#ifdef DEBUG
	printf("Got Lab' %f %f %f\n",in[0],in[1],in[2]);
#endif

	if (p->inking == 0) {	/* If we are copying existing K value */
		
		/* Figure out what K value was previously here */
		if (p->AtoB != p->AtoB1) {
			/* Simple because BtoA input & output tables don't change */
			/* Figure out what DEV' K value the BtoA table currently has for this PCS' */
			if (p->BtoA->clut(p->BtoA, temp, in) > 1)
				error ("%d, %s",p->BtoA->pp->errc,p->BtoA->pp->err);

			/* Convert DEV' to DEV */
			if (p->BtoA->output(p->BtoA, temp, temp) > 1)
				error ("%d, %s",p->BtoA->pp->errc,p->AtoB->pp->err);
		} else {
			/* More complicated because old BtoA in/out tables are different */
			/* from the new ones. */
			/* We know that new BtoA in/out tables are inverse of AtoB in/out, */
			/* so we don't have to use BtoA1->inv_input, & BtoA1->inv_output */
			/* Convert PCS' to PCS */
			if (p->AtoB->output(p->AtoB, temp, in) > 1)
				error ("%d, %s",p->AtoB->pp->errc,p->AtoB->pp->err);
	
			/* Figure out what DEV K value the BtoA table currently has for this PCS */
			if (((icxLuBase *)p->BtoA)->lookup((icxLuBase *)p->BtoA, temp, temp) > 1)
				error ("%d, %s",p->BtoA->pp->errc,p->BtoA->pp->err);
		}
		targetk = temp[3];
#ifdef DEBUG
		printf("Got existing CMYK %f %f %f %f\n",temp[0],temp[1],temp[2],temp[3]);
#endif
	}

	/* Copy the Lab in */
	temp[0] = in[0];
	temp[1] = in[1];
	temp[2] = in[2];

	if (p->AtoB != p->AtoB1) {
		double tt[4];

		/* Can't assume B2A in/out tables are inverses of AtoB */
		/* Convert PCS' -> PCS for this table */
		if (p->BtoA->inv_input(p->BtoA, temp, temp) > 1)
			error ("%d, %s",p->BtoA->pp->errc,p->BtoA->pp->err);
		/* Convert PCS -> PCS' for colorimetric */
		if (p->AtoB1->inv_output(p->AtoB1, temp, temp) > 1)
			error ("%d, %s",p->AtoB->pp->errc,p->AtoB->pp->err);
	}

	/* Abstract profile applied before inversion */
	if (p->abs_luo != NULL) {
		do_abstract(p, temp, temp);
	}

	/* Invert AtoB1 clut, using set inking policy */
	out[3] = targetk;

	/* PCS' -> DEV' colorimetric (aux target is DEV space) */
	if ((rv = p->AtoB1->inv_clut(p->AtoB1, out, temp)) > 1)
		error ("%d, %s",p->AtoB1->pp->errc,p->AtoB1->pp->err);

	/* ~~~ Note that the ink limit will be wrong for non-colorimetric, */
	/* since AtoB1->inv_clut will be assuming A->toB1->inv_input as the output table, */
	/* while we will actually be using BtoA->output ~~~~ */
	/* Need to override ink limit computation function in icx for non-colorimetric. */

//#ifdef DEBUG
//		if (rv != 0) {
//			printf("Inversion clipped\n");
//		}
//#endif
	if (p->AtoB != p->AtoB1) {
		/* Can't assume B2A in/out tables are inverses of AtoB */
		/* Converts DEV' -> DEV colorimetric */
		if (p->AtoB1->inv_input(p->AtoB1, out, out) > 1)
			error ("%d, %s",p->AtoB->pp->errc,p->AtoB->pp->err);
		/* Convert DEV -> DEV' for this table */
		if (p->BtoA->inv_output(p->BtoA, out, out) > 1)
			error ("%d, %s",p->BtoA->pp->errc,p->BtoA->pp->err);
	}
#ifdef DEBUG
	printf("New CMYK' %f %f %f %f\n",out[0],out[1],out[2],out[3]);
	printf("\n");
#endif

	if (p->verb) {		/* Output percent intervals */
		int pc;
		p->count++;
		pc = (int)(p->count * 100.0/p->total + 0.5);
		if (pc != p->last) {
			printf("%c%2d%%",cr_char,pc), fflush(stdout);
			p->last = pc;
		}
	}
}

/* - - - - - - - - - */
/* New output table */
void CMYKp_CMYK(void *cntx, double out[4], double in[4]) {
	callback *p = (callback *)cntx;

#ifdef DEBUG
	printf("Got CMYK' %f %f %f %f\n",in[0],in[1],in[2],in[3]);
#endif
	if (p->AtoB != p->AtoB1) {
		/* Non-colorimetric, use existing output table */
		if (p->BtoA->output(p->BtoA, out, in) > 1)
			error ("%d, %s",p->BtoA->pp->errc,p->BtoA->pp->err);
	} else {
		/* Colorimetric, use inverse AtoB input */
		if (p->AtoB1->inv_input(p->AtoB1, out, in) > 1)
			error ("%d, %s",p->AtoB1->pp->errc,p->AtoB1->pp->err);
	}
#ifdef DEBUG
	printf("New CMYK %f %f %f %f\n",out[0],out[1],out[2],out[3]);
#endif
}


/* ------------------------------------------- */

int
main(int argc, char *argv[]) {
	int fa,nfa;				/* argument we're looking at */
	char in_name[MAXNAMEL+1];
	char out_name[MAXNAMEL+1];
	char abs_name[MAXNAMEL+1] = "\000";	/* Abstract profile name */
	icmFile *rd_fp, *wr_fp;
	icc *icco;
	int verb = 0;
	int clutres = 0;
	int do0 = 0;
	int do1 = 0;
	int do2 = 0;
	int inking = 0;			/* Default copy from existing */
	int locus = 0;			/* Default K value target */
	double Kstle = 0.0, Kstpo = 0.0, Kenle = 0.0, Kenpo = 0.0, Kshap = 0.0;
	double tlimit = -1.0;	/* Total ink limit */
	double klimit = -1.0;	/* Black ink limit */
	int intsep = 0;			/* Not implimented in xicc yet ??? */
	int rv = 0;

	error_program = argv[0];
	check_if_not_interactive();

	if (argc < 2)
		usage();

	/* Process the arguments */
	for(fa = 1;fa < argc;fa++) {
		nfa = fa;					/* skip to nfa if next argument is used */
		if (argv[fa][0] == '-')	{	/* Look for any flags */
			char *na = NULL;		/* next argument after flag, null if none */

			if (argv[fa][2] != '\000')
				na = &argv[fa][2];		/* next is directly after flag */
			else {
				if ((fa+1) < argc) {
					if (argv[fa+1][0] != '-') {
						nfa = fa + 1;
						na = argv[nfa];		/* next is seperate non-flag argument */
					}
				}
			}

			if (argv[fa][1] == '?')
				usage();

			/* Verbosity */
			else if (argv[fa][1] == 'v' || argv[fa][1] == 'V') {
				verb = 1;
			}
			else if (argv[fa][1] == '0') {
				do0 = 1;
			}
			else if (argv[fa][1] == '1') {
				do1 = 1;
			}
			else if (argv[fa][1] == '2') {
				do2 = 1;
			}
			else if (argv[fa][1] == 'r' || argv[fa][1] == 'R') {
				fa = nfa;
				if (na == NULL) usage();
				clutres = atoi(na);
			}

			/* Inking rule */
			else if (argv[fa][1] == 'k' || argv[fa][1] == 'K') {
				fa = nfa;
				if (na == NULL) usage();
				if (argv[fa][1] == 'k')
					locus = 0;			/* K value target */
				else
					locus = 1;			/* K locus target */
    			switch (na[0]) {
					case 'e':
					case 'E':
						inking = 0;		/* Use existing table as guide */
						break;
					case 'z':
					case 'Z':
						inking = 1;		/* Use minimum k */
						break;
					case 'h':
					case 'H':
						inking = 2;		/* Use 0.5 k */
						break;
					case 'x':
					case 'X':
						inking = 3;		/* Use maximum k */
						break;
					case 'r':
					case 'R':
						inking = 4;		/* Use ramp */
						break;
					case 'p':
					case 'P':
						inking = 5;		/* Use curve parameter */
						++fa;
						if (fa >= argc) usage();
						Kstle = atof(argv[fa]);

						++fa;
						if (fa >= argc) usage();
						Kstpo = atof(argv[fa]);

						++fa;
						if (fa >= argc || argv[fa][0] == '-') usage();
						Kenpo = atof(argv[fa]);

						++fa;
						if (fa >= argc) usage();
						Kenle = atof(argv[fa]);

						++fa;
						if (fa >= argc || argv[fa][0] == '-') usage();
						Kshap = atof(argv[fa]);
						break;
					default:
						usage();
				}
			}
			else if (argv[fa][1] == 'l') {
				fa = nfa;
				if (na == NULL) usage();
				tlimit = atoi(na)/100.0;
			}
			else if (argv[fa][1] == 'L') {
				fa = nfa;
				if (na == NULL) usage();
				klimit = atoi(na)/100.0;
			}

			/* Use internal separation */
			else if (argv[fa][1] == 's' || argv[fa][1] == 'S') {
				intsep = 1;
			}

			/* Abstract profile */
			else if (argv[fa][1] == 'p' || argv[fa][1] == 'P') {
				if (na == NULL) usage();
				fa = nfa;
				strncpy(abs_name,na,MAXNAMEL); abs_name[MAXNAMEL] = '\000';
			}

			else 
				usage();
		} else
			break;
	}

	if (fa >= argc || argv[fa][0] == '-') usage();
	strncpy(in_name,argv[fa++],MAXNAMEL); in_name[MAXNAMEL] = '\000';

	if (fa >= argc || argv[fa][0] == '-') usage();
	strncpy(out_name,argv[fa++],MAXNAMEL); out_name[MAXNAMEL] = '\000';

	/* Open up the profile for reading */
	if ((rd_fp = new_icmFileStd_name(in_name,"r")) == NULL)
		error ("Can't open file '%s'",in_name);

	if ((icco = new_icc()) == NULL)
		error ("Creation of ICC object failed");

	/* Read header etc. */
	if ((rv = icco->read(icco,rd_fp,0)) != 0)
		error ("%d, %s",rv,icco->err);

	/* Read every tag */
	if (icco->read_all_tags(icco) != 0) {
		error("Unable to read all tags: %d, %s",icco->errc,icco->err);
	}

	rd_fp->del(rd_fp);

	/* ======================= */
	/* Check that it is a suitable icc */
	{
		icmHeader *rh = icco->header;

		if (rh->deviceClass != icSigOutputClass)
			error("Profile isn't an output device profile");

    	if (rh->colorSpace != icSigCmykData)
			error("Profile isn't for a CMYK device");

    	if (rh->pcs != icSigLabData)
			error("Profile is not using a PCS of Lab - can't cope with this yet");
	}

	if (verb && inking == 5) {
		double tL;
		printf("K parameters are are %f %f %f %f %f\n",Kstle, Kstpo, Kenpo, Kenle, Kshap);
		for (tL = 100.0; tL >= 0.0; tL -= 10.0) {
			double rv, L;

			L = 0.01 * tL;

			/* Code from xlut.c: */
			/* Invert sense of L, so that 0.0 = white, 1.0 = black */
			L = 1.0 - L;

			if (L <= Kstpo && L <= Kenpo) {
				/* We are at white level */
				rv = Kstle;
			} else if (L >= Kstpo && L >= Kenpo) {
				/* We are at black level */
				rv = Kenle;
			} else {
				double g;
				/* We must be on the curve from start to end levels */

				if (Kstpo > Kenpo) {
					rv = (L - Kenpo)/(Kstpo - Kenpo);
				} else {
					rv = (L - Kstpo)/(Kenpo - Kstpo);
				}

				g = Kshap/2.0;

				/* A value of 0.5 will be tranlated to g */
				rv = rv/((1.0/g - 2.0) * (1.0 - rv) + 1.0);

				/* Transition between start end end levels */
				rv = rv * (Kenle - Kstle) + Kstle;
			}

			/* To be safe */
			if (rv < 0.0)
				rv = 0.0;
			else if (rv > 1.0)
				rv = 1.0;

			printf("L = %f, K %s = %f\n",tL, locus ? "locus" : "value", rv);
		}
	}

	/* ======================= */
	{
		int ii;						/* Current intent */
		icmLut *done[3];			/* record pointers to done Luts here */
		icRenderingIntent intent = 0;
		icTagSignature sig = 0;
		xicc *xicco;
		callback cb;					/* Callback support stucture */
		icxInk ink;						/* Ink parameters */
		icmLuAlgType alg;				/* Type of lookup algorithm */
		icmFile *abs_fp = NULL;			/* Abstract profile transform: */
		icc *abs_icc = NULL;
		xicc *abs_xicc = NULL;
		
		/* Wrap with an expanded icc */
		if ((xicco = new_xicc(icco)) == NULL)
			error ("Creation of xicc failed");

		/* Setup CMYK -> Lab conversion (Fwd) object */

		/* Set the default ink limits if not set on command line */
		icxDefaultLimits(xicco, &ink.tlimit, tlimit, &ink.klimit, klimit);

		if (verb) {
			if (!do0 && !do1 && !do2)
				printf("WARNING: nothing to do!\n");
			if (ink.tlimit >= 0.0)
				printf("Total ink limit assumed is %3.0f%%\n",100.0 * ink.tlimit);
			if (ink.klimit >= 0.0)
				printf("Black ink limit assumed is %3.0f%%\n",100.0 * ink.klimit);
		}

		ink.KonlyLmin = 0;		/* Use normal black Lmin for locus */

		ink.c.Ksmth = ICXINKDEFSMTH;	/* Default curve smoothing */
		ink.c.Kskew = ICXINKDEFSKEW;	/* default curve skew */
		ink.x.Ksmth = ICXINKDEFSMTH;
		ink.x.Kskew = ICXINKDEFSKEW;

		if (inking == 0) {
			ink.k_rule = icxKvalue;		/* K is auxiliary target */

		} else if (inking == 1) {		/* Use minimum */
			ink.k_rule = locus ? icxKluma5 : icxKluma5k;
			ink.c.Kstle = 0.0;
			ink.c.Kstpo = 0.0;
			ink.c.Kenpo = 1.0;
			ink.c.Kenle = 0.0;
			ink.c.Kshap = 1.0;
		} else if (inking == 2) {		/* Use 0.5  */
			ink.k_rule = locus ? icxKluma5 : icxKluma5k;
			ink.c.Kstle = 0.5;
			ink.c.Kstpo = 0.0;
			ink.c.Kenpo = 1.0;
			ink.c.Kenle = 0.5;
			ink.c.Kshap = 1.0;
		} else if (inking == 3) {		/* Use maximum  */
			ink.k_rule = locus ? icxKluma5 : icxKluma5k;
			ink.c.Kstle = 1.0;
			ink.c.Kstpo = 0.0;
			ink.c.Kenpo = 1.0;
			ink.c.Kenle = 1.0;
			ink.c.Kshap = 1.0;
		} else if (inking == 4) {		/* Use ramp  */
			ink.k_rule = locus ? icxKluma5 : icxKluma5k;
			ink.c.Kstle = 0.0;
			ink.c.Kstpo = 0.0;
			ink.c.Kenpo = 1.0;
			ink.c.Kenle = 1.0;
			ink.c.Kshap = 1.0;
		} else {						/* Use specified curve */
			ink.k_rule = locus ? icxKluma5 : icxKluma5k;
			ink.c.Kstle = Kstle;
			ink.c.Kstpo = Kstpo;
			ink.c.Kenpo = Kenpo;
			ink.c.Kenle = Kenle;
			ink.c.Kshap = Kshap;
		}

		cb.verb = verb;
		cb.count = 0;
		cb.last = -1;
		cb.inking = inking;

		/* Setup our access to the device characteristic */
		if ((cb.AtoB1 = (icxLuLut *)xicco->get_luobj(xicco,
		                            ICX_CLIP_NEAREST
#ifdef USE_CAM_CLIP_OPT
									| ICX_CAM_CLIP
#endif
		                            | (intsep ? ICX_INT_SEPARATE : 0),
		                            icmFwd, icRelativeColorimetric,
		                            icmSigDefaultData, icmLuOrdNorm, NULL, &ink)) == NULL)
			error ("%d, %s",xicco->errc, xicco->err);

		cb.AtoB1->spaces((icxLuBase *)cb.AtoB1, NULL, NULL, NULL, NULL, &alg,
		                                              NULL, NULL, &cb.pcsspace);
		if (alg != icmLutType)
			error("Forward conversion is not a Lut");

		/* Open up the abstract profile if supplied, and setup luo */
		if (abs_name[0] != '\000') {
			if ((abs_fp = new_icmFileStd_name(abs_name,"r")) == NULL)
				error ("Can't open abstract profile file '%s'",abs_name);
			
			if ((abs_icc = new_icc()) == NULL)
				error ("Creation of Abstract profile ICC object failed");
	
			/* Read header etc. */
			if ((rv = abs_icc->read(abs_icc,abs_fp,0)) != 0)
				error ("%d, %s",rv,abs_icc->err);
	
			if (abs_icc->header->deviceClass != icSigAbstractClass)
				error("Abstract profile isn't an abstract profile");
	
			/* Take intended abstract intent from profile itself */
			if ((cb.abs_intent = abs_icc->header->renderingIntent) != icAbsoluteColorimetric)
				cb.abs_intent = icRelativeColorimetric;
	
			/* Wrap with an expanded icc */
			if ((abs_xicc = new_xicc(abs_icc)) == NULL)
				error ("Creation of abstract profile xicc failed");

			/* The abstract profile intent is assumed to determine how it gets applied. */
			/* Make abstract PCS XYZ if icAbsoluteColorimetric is needed. */
			if ((cb.abs_luo = abs_xicc->get_luobj(abs_xicc, ICX_CLIP_NEAREST, icmFwd, cb.abs_intent,
		        (cb.pcsspace == icSigLabData && cb.abs_intent == icRelativeColorimetric)
				             ? icSigLabData : icSigXYZData,
				icmLuOrdNorm, NULL, NULL)) == NULL)
				error ("%d, %s",abs_icc->errc, abs_icc->err);
		} else {
			cb.abs_luo = NULL;
		}
			
		/* for all intents, and not already processed */
		for (ii = 0; ii <= 2; ii++) {
			int i;
			icmLut *wo;

			switch(ii) {
				case 0:
					intent = icRelativeColorimetric;
					sig    = icSigBToA1Tag;
					if (do1 == 0)
						continue;
					break;
				case 1:
					intent = icPerceptual;
					sig    = icSigBToA0Tag;
					if (do0 == 0)
						continue;
					break;
				case 2:
					intent = icSaturation;
					sig    = icSigBToA2Tag;
					if (do2 == 0)
						continue;
					break;
			}

			if (intent == icRelativeColorimetric) {
				cb.AtoB = cb.AtoB1;
			} else {
				/* Setup CMYK -> Lab conversion (Fwd) object */
				if ((cb.AtoB = (icxLuLut *)xicco->get_luobj(xicco, ICX_CLIP_NEAREST, icmFwd, intent,
				                         icmSigDefaultData, icmLuOrdNorm, NULL, NULL)) == NULL)
					error ("%d, %s",xicco->errc, xicco->err);
	
				cb.AtoB->spaces((icxLuBase *)cb.AtoB, NULL, NULL, NULL, NULL, &alg, NULL, NULL, NULL);
				if (alg != icmLutType)
					error("Forwards conversion is not a Lut");
			}

			/* Setup Lab -> CMYK conversion (Bwd) object */
			if ((cb.BtoA = (icxLuLut *)xicco->get_luobj(xicco, ICX_CLIP_NEAREST, icmBwd, intent,
			                           icmSigDefaultData, icmLuOrdNorm, NULL, NULL)) == NULL)
				error ("%d, %s",xicco->errc, xicco->err);

			cb.BtoA->spaces((icxLuBase *)cb.BtoA, NULL, NULL, NULL, NULL, &alg, NULL, NULL, NULL);
			if (alg != icmLutType)
				error("Backwards conversion is not a Lut");

			/* Try and read the tag from the file */
			wo = (icmLut *)icco->read_tag(icco, sig);
			if (wo == NULL) 
				error("Can't find %s", icm2str(icmRenderingIntent, intent));

			/* Need to check that the cast is appropriate. */
			if (wo->ttype != icSigLut16Type && wo->ttype != icSigLut8Type)
				error("Lut table isn't Lut8 or Lut16 Type");

			/* Set reverse input table resolution to same as fwd output */
			wo->inputEnt = cb.AtoB->lut->outputEnt;

			/* Let user override for BtoA1 */
			if (sig == icSigBToA1Tag && clutres > 0) {
				if (verb)
					printf("Overriding existing clut resolution %d with %d\n",wo->clutPoints,clutres);
		    	wo->clutPoints = clutres;
			}
			/* If Lut8, make sure the input and output tables have 256 enries. */
			if (wo->ttype == icSigLut8Type) {
		    	wo->inputEnt = 256;
		    	wo->outputEnt = 256;
			}
			wo->allocate((icmBase *)wo);/* Allocate space */

			/* Make sure that we don't process a table twice */
			done[ii] = wo;
			for (i = ii-1; i >= 0; i--) {
				if (done[i] == wo) {
					break;
				}
			}
			if (i >= 0) {
				if (verb)
					printf("Skipping %s table - already done\n", icm2str(icmRenderingIntent, intent));

			} else {
		
				if (verb)
					printf("About to start processing %s\n", icm2str(icmRenderingIntent, intent));
	
				if (cb.verb) {
					unsigned int ui;
					int extra;
					for (cb.total = 1, ui = 0; ui < wo->inputChan; ui++, cb.total *= wo->clutPoints)
						; 
					/* Add in cell center points */
					for (extra = 1, ui = 0; ui < wo->inputChan; ui++, extra *= (wo->clutPoints-1))
						;
					cb.total += extra;
					printf(" 0%%"), fflush(stdout);
				}
				/* Use helper function to do the hard work. */
				if (wo->set_tables(wo,
						ICM_CLUT_SET_APXLS,
						&cb,						/* Context */
						icSigLabData, 				/* Input color space */
						icSigCmykData, 				/* Output color space */
						Lab_Labp,					/* Linear input transform Lab->Lab' */
						NULL, NULL,					/* Use default Lab' range */
						Labp_CMYKp,					/* Lab' -> CMYK' transfer function */
						NULL, NULL,					/* Use default CMYK' range */
						CMYKp_CMYK) != 0)			/* Output transfer function, CMYK'->CMYK (NULL = deflt) */
					error("Setting 16 bit Lab->CMYK Lut failed: %d, %s",icco->errc,icco->err);
	
				if (verb)
					printf("\nDone processing %s\n", icm2str(icmRenderingIntent, intent));
	
			}

			/* Done with this intents lookup object */
			cb.BtoA->del((icxLuBase *)cb.BtoA);
			if (cb.AtoB != cb.AtoB1)
				cb.AtoB->del((icxLuBase *)cb.AtoB);
		}
		/* Done with colorimetric intents AtoB1 lookup objects, and xicc */
		cb.AtoB1->del((icxLuBase *)cb.AtoB1);
		xicco->del(xicco);

		if (cb.abs_luo != NULL) {		/* Free up abstract transform */
			cb.abs_luo->del(cb.abs_luo);
			abs_xicc->del(abs_xicc);
			abs_icc->del(abs_icc);
			abs_fp->del(abs_fp);
		}

	}
	/* ======================================= */
	
	/* Open up the other profile for writing */
	if ((wr_fp = new_icmFileStd_name(out_name,"w")) == NULL)
		error ("Can't open file '%s'",out_name);

	if ((rv = icco->write(icco,wr_fp,0)) != 0)
		error ("Write file: %d, %s",rv,icco->err);

	wr_fp->del(wr_fp);
	icco->del(icco);

	return 0;
}