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
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
1001
1002
1003
1004
1005
1006
1007
1008
1009
1010
1011
1012
1013
1014
1015
1016
1017
1018
1019
1020
1021
1022
1023
1024
1025
1026
1027
1028
1029
1030
1031
1032
1033
1034
1035
1036
1037
1038
1039
1040
1041
1042
1043
1044
1045
1046
1047
1048
1049
1050
1051
1052
1053
1054
1055
1056
1057
1058
1059
1060
1061
1062
1063
1064
1065
1066
1067
1068
1069
1070
1071
1072
1073
1074
1075
1076
1077
1078
1079
1080
1081
1082
1083
1084
1085
1086
1087
1088
1089
1090
1091
1092
1093
1094
1095
1096
1097
1098
1099
1100
1101
1102
1103
1104
1105
1106
1107
1108
1109
1110
1111
1112
1113
1114
1115
1116
1117
1118
1119
1120
1121
1122
1123
1124
1125
1126
1127
1128
1129
1130
1131
1132
1133
1134
1135
1136
1137
1138
1139
1140
1141
1142
1143
1144
1145
1146
1147
1148
1149
1150
1151
1152
1153
1154
1155
1156
1157
1158
1159
1160
1161
1162
1163
1164
1165
1166
1167
1168
1169
1170
1171
1172
1173
1174
1175
1176
1177
1178
1179
1180
1181
1182
1183
1184
1185
1186
1187
1188
1189
1190
1191
1192
1193
1194
1195
1196
1197
1198
1199
1200
1201
1202
1203
1204
1205
1206
1207
1208
1209
1210
1211
1212
1213
1214
1215
1216
1217
1218
1219
1220
1221
1222
1223
1224
1225
1226
1227
1228
1229
1230
1231
1232
1233
1234
1235
1236
1237
1238
1239
1240
1241
1242
1243
1244
1245
1246
1247
1248
1249
1250
1251
1252
1253
1254
1255
1256
1257
1258
1259
1260
1261
1262
1263
1264
1265
1266
1267
1268
1269
1270
1271
1272
1273
1274
1275
1276
1277
1278
1279
1280
1281
1282
|
/*
** pnmtotiff.c - converts a PNM image to a TIFF (Tagged Image File) image
**
** Derived by Jef Poskanzer from ras2tif.c, which is:
**
** Copyright (c) 1990 by Sun Microsystems, Inc.
**
** Author: Patrick J. Naughton
** naughton@wind.sun.com
**
** Permission to use, copy, modify, and distribute this software and its
** documentation for any purpose and without fee is hereby granted,
** provided that the above copyright notice appear in all copies and that
** both that copyright notice and this permission notice appear in
** supporting documentation.
**
** This file is provided AS IS with no warranties of any kind. The author
** shall have no liability with respect to the infringement of copyrights,
** trade secrets or any patents by this file or any part thereof. In no
** event will the author be liable for any lost revenue or profits or
** other special, indirect and consequential damages.
*/
#define _DEFAULT_SOURCE /* New name for SVID & BSD source defines */
#define _XOPEN_SOURCE /* Make sure stdio.h contains fileno() */
#define _BSD_SOURCE /* Make sure string.h contains strcasecmp() */
#include <unistd.h>
#include <stdio.h>
#include <fcntl.h>
/* tiffio.h has a weird problem on AIX. tiffio.h wrongly typedefs
"int32". That's wrong because such a name is likely to be used in
other parts of the program that includes tiffio.h. And in fact, on
AIX, <inttypes.h> defines it in some cases. One case in which <inttypes.h>
does _not_ define int32 is where _XOPEN_SOURCE is declared. So we always
do that when including tiffio.h. 06.01.05
*/
#include <tiffio.h>
#include <string.h>
#include "pm_c_util.h"
#include "shhopt.h"
#include "mallocvar.h"
#include "nstring.h"
#include "pam.h"
#include "pammap.h"
#include "pm_tiff.h"
#define MAXCOLORS 256
/* 2001.09.03: Old tiff.h doesn't contain these values: */
#ifndef COMPRESSION_ADOBE_DEFLATE
#define COMPRESSION_ADOBE_DEFLATE 8
#endif
typedef struct {
bool b1, b2, b4, b8;
} SizeSet;
typedef enum { TMPFILE, DIRECT_CREATE, DIRECT_APPEND } WriteMethod;
typedef enum { MUST_EXIST, MAY_CREATE } CreatePolicy;
typedef struct {
/* All the information the user supplied in the command line,
in a form easy for the program to use.
*/
const char * inputFileName;
int compression;
/* COMPRESSION Tiff tag value, that corresponds to the compression
option the user specified, or -1 if he didn't specify any.
The -tag option doesn't count.
*/
int fillorder; /* FILLORDER Tiff tag value */
int g3options; /* G3OPTIONS Tiff tag value or 0 for none */
int predictor; /* PREDICTOR Tiff tag value or -1 for none */
int rowsperstrip; /* -1 = unspecified */
unsigned int minisblack; /* logical: User wants MINISBLACK photometric */
unsigned int miniswhite; /* logical: User wants MINISWHITE photometric */
unsigned int truecolor; /* logical: User wants truecolor, not cmap */
unsigned int color; /* logical: assume not grayscale */
float xresolution; /* XRESOLUTION Tiff tag value or -1 for none */
float yresolution; /* YRESOLUTION Tiff tag value or -1 for none */
int resolutionunit; /* RESOLUTIONUNIT Tiff tag value */
SizeSet indexsizeAllowed;
/* Which bit widths are allowable in a raster of palette indices */
unsigned int verbose;
WriteMethod writeMethod; /* Output mode */
const char * output; /* -output option value. NULL if none. */
float resolution; /* X and Y resolution */
struct optNameValue * taglist;
} CmdlineInfo;
static void
validateTagList(struct optNameValue const taglist[]) {
unsigned int i;
for (i = 0; taglist[i].name; ++i) {
const char * const tagName = taglist[i].name;
const tagDefinition * tagDefP = tagDefFind(tagName);
if (!tagDefP)
pm_error("Unknown tag name '%s'", tagName);
else {
/* We don't allow the user to set directly any tag that we
control explicitly. These are normally tags that have to be
consistent with other stuff we put in the image. But in some
cases, they're just tags we had special options for before
-tag existed. The latter should probably be converted
eventually to prefer -tag.
*/
switch (tagDefP->tagnum) {
case TIFFTAG_IMAGEWIDTH:
case TIFFTAG_IMAGELENGTH:
case TIFFTAG_BITSPERSAMPLE:
case TIFFTAG_COMPRESSION:
case TIFFTAG_GROUP3OPTIONS:
case TIFFTAG_PREDICTOR:
case TIFFTAG_PHOTOMETRIC:
case TIFFTAG_FILLORDER:
case TIFFTAG_SAMPLESPERPIXEL:
case TIFFTAG_ROWSPERSTRIP:
case TIFFTAG_PLANARCONFIG:
case TIFFTAG_COLORMAP:
pm_error("You cannot specify a '%s' tag with -tag. "
"Pamtotiff controls that internally or via other "
"options.", tagName);
}
}
}
}
static void
parseCommandLine(int argc,
const char ** const argv,
CmdlineInfo * const cmdlineP) {
/*----------------------------------------------------------------------------
Note that the file spec array we return is stored in the storage that
was passed to us as the argv array.
-----------------------------------------------------------------------------*/
optEntry * option_def;
optStruct3 opt;
unsigned int none, packbits, lzw, g3, g4, msb2lsb, lsb2msb, opt_2d, fill;
unsigned int flate, adobeflate;
char * indexbits;
char * resolutionunit;
unsigned int appendSpec, outputSpec, predictorSpec, rowsperstripSpec,
xresolutionSpec, yresolutionSpec, indexbitsSpec,
resolutionunitSpec, tagSpec;
unsigned int option_def_index;
MALLOCARRAY_NOFAIL(option_def, 100);
option_def_index = 0; /* incremented by OPTENT3 */
OPTENT3(0, "verbose", OPT_FLAG, NULL, &cmdlineP->verbose, 0);
OPTENT3(0, "none", OPT_FLAG, NULL, &none, 0);
OPTENT3(0, "packbits", OPT_FLAG, NULL, &packbits, 0);
OPTENT3(0, "lzw", OPT_FLAG, NULL, &lzw, 0);
OPTENT3(0, "g3", OPT_FLAG, NULL, &g3, 0);
OPTENT3(0, "g4", OPT_FLAG, NULL, &g4, 0);
OPTENT3(0, "flate", OPT_FLAG, NULL, &flate, 0);
OPTENT3(0, "adobeflate", OPT_FLAG, NULL, &adobeflate, 0);
OPTENT3(0, "msb2lsb", OPT_FLAG, NULL, &msb2lsb, 0);
OPTENT3(0, "lsb2msb", OPT_FLAG, NULL, &lsb2msb, 0);
OPTENT3(0, "2d", OPT_FLAG, NULL, &opt_2d, 0);
OPTENT3(0, "fill", OPT_FLAG, NULL, &fill, 0);
OPTENT3(0, "minisblack", OPT_FLAG, NULL, &cmdlineP->minisblack, 0);
OPTENT3(0, "mb", OPT_FLAG, NULL, &cmdlineP->minisblack, 0);
OPTENT3(0, "miniswhite", OPT_FLAG, NULL, &cmdlineP->miniswhite, 0);
OPTENT3(0, "mw", OPT_FLAG, NULL, &cmdlineP->miniswhite, 0);
OPTENT3(0, "truecolor", OPT_FLAG, NULL, &cmdlineP->truecolor, 0);
OPTENT3(0, "color", OPT_FLAG, NULL, &cmdlineP->color, 0);
OPTENT3(0, "append", OPT_FLAG, NULL, &appendSpec, 0);
OPTENT3(0, "output", OPT_STRING, &cmdlineP->output,
&outputSpec, 0);
OPTENT3(0, "predictor", OPT_UINT, &cmdlineP->predictor,
&predictorSpec, 0);
OPTENT3(0, "rowsperstrip", OPT_UINT, &cmdlineP->rowsperstrip,
&rowsperstripSpec, 0);
OPTENT3(0, "xresolution", OPT_FLOAT, &cmdlineP->xresolution,
&xresolutionSpec, 0);
OPTENT3(0, "yresolution", OPT_FLOAT, &cmdlineP->yresolution,
&yresolutionSpec, 0);
OPTENT3(0, "resolutionunit", OPT_STRING, &resolutionunit,
&resolutionunitSpec, 0);
OPTENT3(0, "indexbits", OPT_STRING, &indexbits,
&indexbitsSpec, 0);
OPTENT3(0, "tag", OPT_NAMELIST, &cmdlineP->taglist, &tagSpec, 0);
opt.opt_table = option_def;
opt.short_allowed = FALSE; /* We have no short (old-fashioned) options */
opt.allowNegNum = FALSE; /* We have no parms that are negative numbers */
pm_optParseOptions3(&argc, (char**)argv, opt, sizeof(opt), 0);
/* Uses and sets argc, argv, and some of *cmdlineP and others. */
if (none + packbits + lzw + g3 + g4 + flate + adobeflate > 1)
pm_error("You specified more than one compression option. "
"Only one of -none, -packbits, -lze, -g3, and -g4 "
"is allowed.");
if (none)
cmdlineP->compression = COMPRESSION_NONE;
else if (packbits)
cmdlineP->compression = COMPRESSION_PACKBITS;
else if (lzw)
cmdlineP->compression = COMPRESSION_LZW;
else if (g3)
cmdlineP->compression = COMPRESSION_CCITTFAX3;
else if (g4)
cmdlineP->compression = COMPRESSION_CCITTFAX4;
else if (adobeflate)
cmdlineP->compression = COMPRESSION_ADOBE_DEFLATE;
else if (flate)
cmdlineP->compression = COMPRESSION_DEFLATE;
else
cmdlineP->compression = COMPRESSION_NONE;
if (msb2lsb + lsb2msb > 1)
pm_error("You specified both -msb2lsb and -lsb2msb. "
"These are conflicting options.");
if (msb2lsb)
cmdlineP->fillorder = FILLORDER_MSB2LSB;
else if (lsb2msb)
cmdlineP->fillorder = FILLORDER_LSB2MSB;
else
cmdlineP->fillorder = FILLORDER_MSB2LSB;
if (cmdlineP->miniswhite && cmdlineP->minisblack)
pm_error("You cannot specify both -miniswhite and -minisblack");
cmdlineP->g3options = 0; /* initial value */
if (opt_2d)
cmdlineP->g3options |= GROUP3OPT_2DENCODING;
if (fill)
cmdlineP->g3options |= GROUP3OPT_FILLBITS;
if (outputSpec) {
if (appendSpec)
cmdlineP->writeMethod = DIRECT_APPEND;
else
cmdlineP->writeMethod = DIRECT_CREATE;
} else
cmdlineP->writeMethod = TMPFILE;
if (predictorSpec) {
if (cmdlineP->predictor != 1 && cmdlineP->predictor != 2)
pm_error("-predictor may be only 1 or 2. You specified %d.",
cmdlineP->predictor);
} else
cmdlineP->predictor = -1;
if (rowsperstripSpec) {
if (cmdlineP->rowsperstrip < 1)
pm_error("-rowsperstrip must be positive. You specified %d.",
cmdlineP->rowsperstrip);
} else
cmdlineP->rowsperstrip = -1;
if (xresolutionSpec) {
if (cmdlineP->xresolution < 1)
pm_error("-xresolution must be positive. You specified %f.",
cmdlineP->xresolution);
} else
cmdlineP->xresolution = -1;
if (yresolutionSpec) {
if (cmdlineP->yresolution < 1)
pm_error("-yresolution must be positive. You specified %f.",
cmdlineP->yresolution);
} else
cmdlineP->yresolution = -1;
if (resolutionunitSpec) {
if (streq(resolutionunit, "inch"))
cmdlineP->resolutionunit = RESUNIT_INCH;
else if (streq(resolutionunit, "in"))
cmdlineP->resolutionunit = RESUNIT_INCH;
else if (streq(resolutionunit, "centimeter"))
cmdlineP->resolutionunit = RESUNIT_CENTIMETER;
else if (streq(resolutionunit, "cm"))
cmdlineP->resolutionunit = RESUNIT_CENTIMETER;
else if (streq(resolutionunit, "none"))
cmdlineP->resolutionunit = RESUNIT_NONE;
else if (streq(resolutionunit, "no"))
cmdlineP->resolutionunit = RESUNIT_NONE;
else
pm_error("The only acceptable values for -resolutionunit are "
"inch, centimeter, none, in, cm, and no. "
"You specified '%s'.", resolutionunit);
} else
cmdlineP->resolutionunit = RESUNIT_INCH;
if (indexbitsSpec) {
if (strstr(indexbits, "1"))
cmdlineP->indexsizeAllowed.b1 = TRUE;
else
cmdlineP->indexsizeAllowed.b1 = FALSE;
if (strstr(indexbits, "2"))
cmdlineP->indexsizeAllowed.b2 = TRUE;
else
cmdlineP->indexsizeAllowed.b2 = FALSE;
if (strstr(indexbits, "4"))
cmdlineP->indexsizeAllowed.b4 = TRUE;
else
cmdlineP->indexsizeAllowed.b4 = FALSE;
if (strstr(indexbits, "8"))
cmdlineP->indexsizeAllowed.b8 = TRUE;
else
cmdlineP->indexsizeAllowed.b8 = FALSE;
} else {
cmdlineP->indexsizeAllowed.b1 = FALSE;
cmdlineP->indexsizeAllowed.b2 = FALSE;
cmdlineP->indexsizeAllowed.b4 = FALSE;
cmdlineP->indexsizeAllowed.b8 = TRUE;
}
if (tagSpec)
validateTagList(cmdlineP->taglist);
else {
MALLOCARRAY_NOFAIL(cmdlineP->taglist, 1);
cmdlineP->taglist[0].name = NULL;
cmdlineP->taglist[0].value = NULL;
}
if (argc-1 == 0)
cmdlineP->inputFileName = "-";
else if (argc-1 != 1)
pm_error("Program takes zero or one argument (filename). You "
"specified %d", argc-1);
else
cmdlineP->inputFileName = argv[1];
}
static void
fillRowOfSubBytePixels(struct pam * const pamP,
const tuple * const tuplerow,
unsigned char * const buf,
unsigned short const tiff_maxval,
unsigned short const photometric,
int const fillorder,
int const bitspersample,
tuplehash const cht) {
/*----------------------------------------------------------------------------
This subroutine deals with cases where multiple pixels are packed into
a single byte of the Tiff output image, i.e. bits per pixel < 8.
-----------------------------------------------------------------------------*/
int col;
int bitshift;
/* The number of bits we have to shift a pixel value left to line
it up with where the current pixel goes in the current byte of
the output buffer.
*/
int const firstbitshift =
(fillorder == FILLORDER_MSB2LSB) ? 8 - bitspersample : 0;
/* The value of 'bitshift' for the first pixel into a
byte of the output buffer. (MSB2LSB is normal).
*/
sample s;
/* The value of the current sample */
unsigned char* tP;
/* The address of the byte in the output buffer in which
the current pixel goes.
*/
unsigned char byte;
/* The under-construction value of the byte pointed to by
tP, above.
*/
bitshift = firstbitshift;
byte = 0;
for (col = 0, tP = buf; col < pamP->width; ++col) {
if (cht == NULL) {
/* It's grayscale */
s = tuplerow[col][0];
if (pamP->maxval != tiff_maxval )
s = (long) s * tiff_maxval / pamP->maxval;
if (photometric == PHOTOMETRIC_MINISWHITE)
s = tiff_maxval - s;
} else {
/* It's a colormapped raster */
int si;
int found;
pnm_lookuptuple(pamP, cht, tuplerow[col], &found, &si);
if (!found)
pm_error("INTERNAL ERROR. We made a color map, and a "
"color map we need is not in it!. "
"col=%d r=%lu g=%lu b=%lu",
col, tuplerow[col][0], tuplerow[col][1],
tuplerow[col][2]);
s = (unsigned char) si;
}
byte |= s << bitshift;
if (fillorder == FILLORDER_MSB2LSB)
bitshift -= bitspersample; /* normal case */
else
bitshift += bitspersample;
if (bitshift < 0 || bitshift > 7) {
*tP++ = byte;
bitshift = firstbitshift;
byte = 0;
}
}
if (bitshift != firstbitshift)
*tP++ = byte;
}
static void
putSample(sample const s,
sample const maxval,
sample const tiffMaxval,
unsigned int const bitspersample,
bool const minIsWhite,
unsigned char ** const tPP) {
/* Until release 10.48 (September 2009), we ignored the min-is-white
photometric (i.e. treated it like min-is-black). Nobody has ever
complained, but it seems clear to me that that was wrong, so I
changed it. We have always respected it for sub-byte samples,
and have always respected it going the other direction, in
Tifftopnm.
- Bryan.
*/
xelval const s2 = maxval == tiffMaxval ? s : s * tiffMaxval / maxval;
xelval const s3 = minIsWhite ? tiffMaxval - s2 : s2;
if (bitspersample > 8) {
*((unsigned short *)(*tPP)) = s3;
(*tPP) += sizeof(short);
} else
*(*tPP)++ = s3 & 0xff;
}
static void
fillRowOfWholeBytePixels(struct pam * const pamP,
tuple * const tuplerow,
unsigned char * const buf,
unsigned short const photometric,
unsigned short const tiffMaxval,
unsigned int const bitsPerSample) {
bool const minIsWhite = (photometric == PHOTOMETRIC_MINISWHITE);
unsigned int col;
unsigned char * tP;
unsigned int planes;
if (photometric == PHOTOMETRIC_RGB)
planes = pamP->depth;
else
/* Write only the first plane from the PAM, even if there
are more.
*/
planes = 1;
for (col = 0, tP = buf; col < pamP->width; ++col) {
unsigned int plane;
for (plane = 0; plane < planes; ++plane) {
putSample(tuplerow[col][plane], pamP->maxval,
tiffMaxval, bitsPerSample, minIsWhite, &tP);
/* Advances tP */
}
}
}
static void
writeScanLines(struct pam * const pamP,
TIFF * const tif,
tuplehash const cht,
unsigned short const tiffMaxval,
unsigned short const bitspersample,
unsigned short const photometric,
int const bytesperrow,
int const fillorder) {
/*----------------------------------------------------------------------------
Write out the raster for the input image described by 'pamP', whose
file is positioned to the raster of the image.
-----------------------------------------------------------------------------*/
tuple * tuplerow; /* malloc'ed */
unsigned char * buf; /* malloc'ed */
int row;
/* The man page for TIFFWriteScanLine doesn't tell the format of
it's 'buf' parameter, but here it is: Its format depends on the
bits per pixel of the TIFF image. If it's 16, 'buf' is an
array of short (16 bit) integers, one per raster column. If
it's 8, 'buf' is an array of 8 bit unsigned integers, one
per pixel sample. If it's less than 8, it's an array of bytes,
each of which represents 1-8 pixel samples, packed
into it in the order specified by the TIFF image's fill order,
with don't-care bits on the right such that each byte contains only
whole samples.
In all cases, the array elements are in order left to right going
from low array indices to high array indices.
The samples form pixel values according to the pixel format indicated
by the TIFF photometric. E.g. if it is MINISWHITE, then a pixel is
one sample and a value of 0 for that sample means white.
*/
MALLOCARRAY(buf, bytesperrow);
if (buf == NULL)
pm_error("can't allocate memory for row buffer");
tuplerow = pnm_allocpamrow(pamP);
for (row = 0; row < pamP->height; ++row) {
int col;
pnm_readpamrow(pamP, tuplerow);
if (cht == NULL) {
/* It's a direct, non-colormapped raster */
if (bitspersample == 8 || bitspersample == 16)
fillRowOfWholeBytePixels(pamP, tuplerow, buf, photometric,
tiffMaxval, bitspersample);
else
fillRowOfSubBytePixels(pamP, tuplerow, buf,
tiffMaxval, photometric,
fillorder, bitspersample, NULL);
} else {
/* It's a colormapped raster */
if (bitspersample == 8) {
for (col = 0; col < pamP->width; ++col) {
int si;
int found;
pnm_lookuptuple(pamP, cht, tuplerow[col], &found, &si);
if (!found)
pm_error("INTERNAL ERROR. We made a color map, and a "
"color map we need is not in it! "
"col=%d r=%lu g=%lu b=%lu",
col, tuplerow[col][0], tuplerow[col][1],
tuplerow[col][2]);
buf[col] = (unsigned char) si;
}
} else {
fillRowOfSubBytePixels(pamP, tuplerow, buf, 0, 0, fillorder,
bitspersample, cht);
}
}
if (TIFFWriteScanline(tif, buf, row, 0) < 0)
pm_error("failed a scanline write on row %d", row);
}
pnm_freepamrow(tuplerow);
free(buf);
}
static void
analyzeColorsInRgbInput(struct pam * const pamP,
CmdlineInfo const cmdline,
int const maxcolors,
tupletable * const chvP,
unsigned int * const colorCtP,
bool * const grayscaleP) {
/*----------------------------------------------------------------------------
Same as analyzeColors(), except assuming input image has R/G/B tuples.
-----------------------------------------------------------------------------*/
if (cmdline.color && cmdline.truecolor) {
*chvP = NULL;
*grayscaleP = FALSE;
} else {
tupletable chv;
bool grayscale;
pm_message("computing colormap...");
chv = pnm_computetuplefreqtable2(pamP, NULL, maxcolors,
pamP->maxval,
colorCtP);
if (chv == NULL) {
grayscale = FALSE;
} else {
unsigned int i;
pm_message("%u color%s found",
*colorCtP, *colorCtP == 1 ? "" : "s");
grayscale = TRUE; /* initial assumption */
for (i = 0; i < *colorCtP && grayscale; ++i) {
if (!pnm_rgbtupleisgray(chv[i]->tuple))
grayscale = FALSE;
}
}
*grayscaleP = grayscale;
if (grayscale || cmdline.truecolor) {
*chvP = NULL;
if (chv)
pnm_freetupletable(pamP, chv);
} else {
/* He wants a colormap. But can we give it to him? */
if (chv)
*chvP = chv;
else {
pm_message("Too many colors - "
"proceeding to write a 24-bit RGB file.");
pm_message("If you want an 8-bit palette file, "
"try doing a 'pnmquant %d'.",
maxcolors);
*chvP = NULL;
}
}
}
}
static void
analyzeColors(struct pam * const pamP,
CmdlineInfo const cmdline,
int const maxcolors,
tupletable * const chvP,
unsigned int * const colorCtP,
bool * const grayscaleP) {
/*----------------------------------------------------------------------------
Analyze the colors in the input image described by 'pamP', whose file
is positioned to the raster.
Return *grayscaleP == true iff the image should be stored as a grayscale
image (which means the image is monochromatic and the user doesn't
insist on color format).
If *grayscaleP is false and the colors, combined with command line options
'cmdline', indicate a colormapped TIFF should be generated, return as *chvP
the address of a color map (in newly malloc'ed space) and the number of
colors in it as *colorCtP. If a colormapped color TIFF is not indicated,
return *chvP == NULL and nothing as *colorCtP.
Leave the file position undefined.
-----------------------------------------------------------------------------*/
if (pamP->depth >= 3)
/* Assume it's a color-capable input image
(tuple type RGB or RGB_ALPHA)
*/
analyzeColorsInRgbInput(pamP, cmdline, maxcolors,
chvP, colorCtP, grayscaleP);
else {
*chvP = NULL;
*grayscaleP = TRUE;
}
}
static void
reportTiffType(bool const grayscale,
bool const colormapped,
unsigned int const colorCt,
bool const verbose) {
if (verbose) {
pm_message("Generating %s TIFF", grayscale ? "grayscale" : "color");
if (colormapped)
pm_message("TIFF will have palette of %u colors", colorCt);
else
pm_message("TIFF will be truecolor (24 bit RGB)");
}
}
static void
computeRasterParm(struct pam * const pamP,
tupletable const chv,
int const colorCt,
bool const grayscale,
int const compression,
bool const minisblack,
bool const miniswhite,
SizeSet const indexsizeAllowed,
unsigned short * const samplesperpixelP,
unsigned short * const bitspersampleP,
unsigned short * const photometricP,
int * const bytesperrowP) {
/*----------------------------------------------------------------------------
Compute the parameters of the raster portion of the TIFF image.
'minisblack' and 'miniswhite' mean the user requests the corresponding
photometric. Both FALSE means user has no explicit requirement.
-----------------------------------------------------------------------------*/
unsigned short defaultPhotometric;
/* The photometric we use if the user specified no preference */
/* We determine the bits per sample by the maxval, except that if
it would be more than 8, we just use 16. I don't know if bits
per sample between 8 and 16 are legal, but they aren't very
nice in any case. If users want them, we should provide an
option. It is not clear why we don't use bits per pixel < 8
for RGB images. Note that code to handle maxvals <= 255 was
written long before maxval > 255 was possible and there are
backward compatibility requirements.
*/
if (pamP->depth == 1 && pamP->maxval == 1) {
*samplesperpixelP = 1;
*bitspersampleP = 1;
if ((compression == COMPRESSION_CCITTFAX3) ||
(compression == COMPRESSION_CCITTFAX4))
defaultPhotometric = PHOTOMETRIC_MINISWHITE;
else
defaultPhotometric = PHOTOMETRIC_MINISBLACK;
} else {
if (chv) {
*samplesperpixelP = 1; /* Pixel is just the one index value */
*bitspersampleP =
colorCt <= 2 && indexsizeAllowed.b1 ? 1 :
colorCt <= 4 && indexsizeAllowed.b2 ? 2 :
colorCt <= 16 && indexsizeAllowed.b4 ? 4 :
colorCt <= 256 && indexsizeAllowed.b8 ? 8 :
0;
if (*bitspersampleP == 0)
pm_error("Your -indexbits option is insufficient for the "
"%d colors in this image.", colorCt);
defaultPhotometric = PHOTOMETRIC_PALETTE;
} else {
if (grayscale) {
/* We'll write just the first plane regardless of how many are
in the input PAM.
*/
*samplesperpixelP = 1;
*bitspersampleP =
pamP->maxval > 255 ? 16 : pm_maxvaltobits(pamP->maxval);
defaultPhotometric = PHOTOMETRIC_MINISBLACK;
} else {
*samplesperpixelP = pamP->depth;
*bitspersampleP = pamP->maxval > 255 ? 16 : 8;
defaultPhotometric = PHOTOMETRIC_RGB;
}
}
}
if (miniswhite)
*photometricP = PHOTOMETRIC_MINISWHITE;
else if (minisblack)
*photometricP = PHOTOMETRIC_MINISBLACK;
else
*photometricP = defaultPhotometric;
{
unsigned int const samplesPerRow = pamP->width * *samplesperpixelP;
if (*bitspersampleP < 8) {
int samplesperbyte;
samplesperbyte = 8 / *bitspersampleP;
*bytesperrowP =
(samplesPerRow + samplesperbyte-1) / samplesperbyte;
} else {
if (UINT_MAX / *bitspersampleP < samplesPerRow)
pm_error("Too many bytes per row to compute");
*bytesperrowP = (samplesPerRow * *bitspersampleP) / 8;
}
}
}
/*----------------------------------------------------------------------------
WRITE MODES
-----------
The Tiff library does all output. There are several issues:
1) The manner of output is opaque to the library client. I.e. we cannot
see or control it.
2) The output file must be random-access.
3) The output file must be writable and readable for multiple-image
streams. (This includes append operations.)
4) The Tiff library produces unhelpful error messages when the above
conditions are not met.
We provide two modes for output:
1. Tmpfile mode (default)
We have the Tiff library direct output to an unnamed temporary file we
create which is seekable and readable. When output is complete, we copy
the file's contents to Standard Output.
2. Direct mode (specified with -output)
We have the Tiff library write output to the specified file. As the Tiff
library requires taht it be be seekable and readable, we fail the program
rather than ask the Tiff library to use the file if it does not meet
these requirements.
Direct mode is further divided into append and create. They are the same
except that in append mode, we insist that the file already exist,
whereas with create mode, we create it if necessary. In either case, if
the file already exists, he Tiff library appends the output to it.
-----------------------------------------------------------------------------*/
static bool
fileIsSeekable(int const ofd,
const char * const outFileName) {
/*----------------------------------------------------------------------------
The file represented by 'ofd' iscapable of seeking.
As a side effect, we position the file to the beginning.
-----------------------------------------------------------------------------*/
int rc;
/* We'd like to get the current position and leave the file positioned
where we found it. But that entails the mess with some systems
having 32 bit file offsets and some having 64 bit file offsets.
*/
/* Some files can seek ahead, but not back. So we test for the
more difficult backward seek.
*/
lseek(ofd, 1, SEEK_SET);
rc = lseek(ofd, 0, SEEK_SET);
return rc >= 0;
}
static void
validateReadableOutputFile(int const ofd) {
/*----------------------------------------------------------------------------
Validate that file 'ofd' is readable and fail the program if it isn't.
This is useful because there are situations in which the TIFF library must
read the output file and if it can't, it fails with an unhelpful error
message about a file I/O error. We, on the other hand, produce a helpful
error message.
-----------------------------------------------------------------------------*/
#if !MSVCRT
int flags;
flags = fcntl(ofd, F_GETFL);
if (flags < 0) {
/* We couldn't get the flags. So just assume the file's OK */
} else {
if ((flags & O_RDONLY) || (flags & O_RDWR)) {
/* File is readable. All is well. */
} else
pm_error("Output is not opened for reading. "
"In order to create a multi-image TIFF stream, "
"output must be both readable and writable.");
}
#endif
}
static void
createTiffGeneratorDirect(const char * const outputFileName,
CreatePolicy const createPolicy,
TIFF ** const tifPP,
int * const ofdP) {
/*----------------------------------------------------------------------------
Create a TIFF generator that writes its output to the specified file.
If the file doesn't already exist and 'createPolicy' is MayCreate,
create the file; otherwise fail the program.
Fail the program if the specified file is not seekable and readable.
Return the handle of the TIFF generator as *tifPP. Also return the
file descriptor for the output file as *ofdP.
-----------------------------------------------------------------------------*/
int fd;
if (createPolicy == MUST_EXIST)
fd = open(outputFileName, O_RDWR);
else
fd = open(outputFileName, (O_RDWR | O_CREAT), 00644);
if (fd == -1) {
if (errno == ENOENT) /* Possible only if MustExist */
pm_error ("Cannot open file : '%s'. File does not exist.",
outputFileName);
else
pm_error ("Cannot open file : '%s'. open() failed with "
"errno %d (%s). ",
outputFileName, errno, strerror(errno));
}
if (!fileIsSeekable(fd, outputFileName))
pm_error("Output file (%s) is not seekable. "
"lseek() returned errno %d (%s). "
"The TIFF library can write only to "
"a seekable file.",
outputFileName, errno, strerror(errno));
*tifPP = TIFFFdOpen(fd, outputFileName, "a");
if (*tifPP == NULL)
pm_error("error opening file %s as TIFF file. "
"TIFFFdOpen() failed.", outputFileName);
*ofdP = fd;
}
static void
createTiffGeneratorTmpfile(TIFF ** const tifPP,
int * const ofdP) {
/*----------------------------------------------------------------------------
Create a TIFF generator that writes its output to an unnnamed temporary file
we create.
Return the handle of the TIFF generator as *tifPP. Also return the file
descriptor for the temporary file as *ofdP.
The TIFF generator has a file name attribute, but it is just for messages;
it is not the name of a file. We use "Internal Temporary File".
-----------------------------------------------------------------------------*/
int fd;
fd = pm_tmpfile_fd();
*tifPP = TIFFFdOpen(fd, "Internal Temporary File", "w");
if (*tifPP == NULL)
pm_error("error opening temporary file as TIFF file. "
"TIFFFdOpen() failed.");
*ofdP = fd;
}
static void
copyBufferToStdout(int const tmpfileFd) {
FILE * tmpfileP;
tmpfileP = fdopen(tmpfileFd, "rb");
fseek(tmpfileP, 0, SEEK_SET);
while (!feof(tmpfileP) && !ferror(tmpfileP) && !ferror(stdout)) {
char buffer[4096];
size_t bytesReadCt;
bytesReadCt = fread(buffer, 1, sizeof(buffer), tmpfileP);
if (ferror(tmpfileP))
pm_error("Error reading from temporary file. "
"Incomplete output. "
"Errno = %s (%d)", strerror(errno), errno);
else
fwrite(buffer, 1, bytesReadCt, stdout);
}
/* POSIX lets us create a FILE from an existing file descriptor, but
does not provide a way to destroy the FILE and keep the file
descriptor. The following fclose() closes the file. Caller
must not access the file again, and if he attempts to close it,
must ignore the failure of close
*/
fclose(tmpfileP);
}
static void
destroyTiffGenerator(WriteMethod const writeMethod,
TIFF * const tifP,
int const ofd) {
TIFFFlushData(tifP);
if (writeMethod == TMPFILE)
copyBufferToStdout(ofd);
/* If we copied the buffer above, the buffer file is already closed
(copyBufferToStdout closes it), TIFFClose appears to tolerate that -
all it does is a close() and doesn't mind that it fails.
*/
TIFFClose(tifP);
}
static void
createTiffColorMap(struct pam * const pamP,
unsigned int const bitspersample,
tupletable const chv,
unsigned int const colorCt,
unsigned short *** const tiffColorMapP) {
unsigned int const colorMapSize = 1 << bitspersample;
unsigned short ** tiffColorMap;
unsigned int plane;
unsigned int i;
MALLOCARRAY_NOFAIL(tiffColorMap, pamP->depth);
for (plane = 0; plane < pamP->depth; ++plane)
MALLOCARRAY_NOFAIL(tiffColorMap[plane], colorMapSize);
for (i = 0; i < colorMapSize; ++i) {
unsigned int plane;
for (plane = 0; plane < pamP->depth; ++plane) {
if (i < colorCt)
tiffColorMap[plane][i] =
chv[i]->tuple[plane] * 65535L / pamP->maxval;
else
tiffColorMap[plane][i] = 0;
}
}
*tiffColorMapP = tiffColorMap;
}
static void
destroyTiffColorMap(struct pam * const pamP,
unsigned short ** const tiffColorMap) {
unsigned int plane;
for (plane = 0; plane < pamP->depth; ++plane)
free(tiffColorMap[plane]);
free(tiffColorMap);
}
static void
setTagListFields(const struct optNameValue * const taglist,
TIFF * const tifP) {
unsigned int i;
for (i = 0; taglist[i].name; ++i) {
const tagDefinition * const tagDefP = tagDefFind(taglist[i].name);
if (tagDefP->put)
tagDefP->put(tifP, tagDefP->tagnum, taglist[i].value,
tagDefP->choices);
}
}
static void
setTiffFields(TIFF * const tifP,
CmdlineInfo const cmdline,
struct pam * const pamP,
unsigned short const bitspersample,
unsigned short const photometric,
unsigned short const samplesperpixel,
unsigned short ** const tiffColorMap,
const char * const inputFileDescription,
struct optNameValue const taglist[]) {
/* TODO: It would be cleaner to set all tags in a tag list and
then call setTagListFields() on that list. That way,
TIFFSetField() is in only one place and all tags get set the
same way and we don't have this icky setting of default and
then resetting with user choice (e.g. DOCUMENTNAME).
*/
/* Set TIFF parameters. */
TIFFSetField(tifP, TIFFTAG_IMAGEWIDTH, pamP->width);
TIFFSetField(tifP, TIFFTAG_IMAGELENGTH, pamP->height);
TIFFSetField(tifP, TIFFTAG_BITSPERSAMPLE, bitspersample);
if (cmdline.compression != -1)
TIFFSetField(tifP, TIFFTAG_COMPRESSION, cmdline.compression);
if (cmdline.compression == COMPRESSION_CCITTFAX3 && cmdline.g3options != 0)
TIFFSetField( tifP, TIFFTAG_GROUP3OPTIONS, cmdline.g3options);
if (cmdline.compression == COMPRESSION_LZW && cmdline.predictor != -1)
TIFFSetField( tifP, TIFFTAG_PREDICTOR, cmdline.predictor);
TIFFSetField(tifP, TIFFTAG_PHOTOMETRIC, photometric);
if (cmdline.fillorder != -1)
TIFFSetField(tifP, TIFFTAG_FILLORDER, cmdline.fillorder);
TIFFSetField(tifP, TIFFTAG_SAMPLESPERPIXEL, samplesperpixel);
if (cmdline.rowsperstrip != -1)
TIFFSetField(tifP, TIFFTAG_ROWSPERSTRIP, cmdline.rowsperstrip);
else
TIFFSetField(tifP, TIFFTAG_ROWSPERSTRIP,
TIFFDefaultStripSize(tifP, 0));
/* Since Netpbm 10.31, we prefer that the user use -tags to specify
RESOLUTIONUNIT, XRESOLUTION, and YRESOLUTION, but retain
-xresolution, -yresolution, and -resolutionunit for backward
compatibility
*/
if (cmdline.xresolution != -1 ||
cmdline.yresolution != -1 ||
cmdline.resolutionunit != -1) {
TIFFSetField(tifP, TIFFTAG_RESOLUTIONUNIT,
cmdline.resolutionunit != -1 ?
cmdline.resolutionunit : RESUNIT_NONE);
}
if (cmdline.xresolution > 0)
TIFFSetField(tifP, TIFFTAG_XRESOLUTION, cmdline.xresolution);
if ( cmdline.yresolution > 0)
TIFFSetField(tifP, TIFFTAG_YRESOLUTION, cmdline.yresolution);
TIFFSetField(tifP, TIFFTAG_PLANARCONFIG, PLANARCONFIG_CONTIG);
if (tiffColorMap)
TIFFSetField(tifP, TIFFTAG_COLORMAP,
tiffColorMap[PAM_RED_PLANE],
tiffColorMap[PAM_GRN_PLANE],
tiffColorMap[PAM_BLU_PLANE]);
TIFFSetField(tifP, TIFFTAG_DOCUMENTNAME, inputFileDescription);
TIFFSetField(tifP, TIFFTAG_IMAGEDESCRIPTION, "converted PNM file");
/* Some of taglist[] overrides defaults we set above. But taglist[]
is defined not to specify any tag types that are not purely user
choice.
*/
setTagListFields(taglist, tifP);
}
static void
convertImage(FILE * const ifP,
TIFF * const tifP,
const char * const inputFileDescription,
CmdlineInfo const cmdline) {
tupletable chv;
tuplehash cht;
unsigned short ** tiffColorMap; /* malloc'ed */
struct pam pam;
unsigned int colorCt;
bool grayscale;
unsigned short photometric;
unsigned short samplesperpixel;
unsigned short bitspersample;
unsigned short tiff_maxval;
/* This is the maxval of the samples in the tiff file. It is
determined solely by the bits per sample ('bitspersample').
*/
int bytesperrow;
pm_filepos rasterPos;
pnm_readpaminit(ifP, &pam, PAM_STRUCT_SIZE(tuple_type));
pm_tell2(ifP, &rasterPos, sizeof(rasterPos));
analyzeColors(&pam, cmdline, MAXCOLORS, &chv, &colorCt, &grayscale);
reportTiffType(grayscale, chv != NULL, colorCt, cmdline.verbose);
/* Go back to beginning of raster */
pm_seek2(ifP, &rasterPos, sizeof(rasterPos));
/* Figure out TIFF parameters. */
computeRasterParm(&pam, chv, colorCt, grayscale,
cmdline.compression,
cmdline.minisblack, cmdline.miniswhite,
cmdline.indexsizeAllowed,
&samplesperpixel, &bitspersample, &photometric,
&bytesperrow);
tiff_maxval = pm_bitstomaxval(bitspersample);
if (!chv) {
cht = NULL;
tiffColorMap = NULL;
} else {
createTiffColorMap(&pam, bitspersample, chv, colorCt, &tiffColorMap);
/* Convert color vector to color hash table, for fast lookup. */
cht = pnm_computetupletablehash(&pam, chv, colorCt);
pnm_freetupletable(&pam, chv);
}
setTiffFields(tifP, cmdline, &pam, bitspersample, photometric,
samplesperpixel, tiffColorMap, inputFileDescription,
cmdline.taglist);
writeScanLines(&pam, tifP, cht,
tiff_maxval, bitspersample, photometric, bytesperrow,
cmdline.fillorder);
if (tiffColorMap)
destroyTiffColorMap(&pam, tiffColorMap);
}
int
main(int argc, const char *argv[]) {
CmdlineInfo cmdline;
const char * inputFileDescription;
FILE * ifP;
TIFF * tifP;
int ofd;
int eof;
unsigned int imageSeq;
pm_proginit(&argc, argv);
parseCommandLine(argc, argv, &cmdline);
ifP = pm_openr_seekable(cmdline.inputFileName);
if (streq(cmdline.inputFileName, "-"))
inputFileDescription = "Standard Input";
else
inputFileDescription = cmdline.inputFileName;
switch (cmdline.writeMethod) {
case DIRECT_APPEND:
createTiffGeneratorDirect(cmdline.output, MUST_EXIST, &tifP, &ofd);
break;
case DIRECT_CREATE:
createTiffGeneratorDirect(cmdline.output, MAY_CREATE, &tifP, &ofd);
break;
case TMPFILE:
createTiffGeneratorTmpfile(&tifP, &ofd);
break;
}
eof = FALSE; /* initial assumption */
imageSeq = 0;
while (!eof) {
bool success;
pnm_nextimage(ifP, &eof);
if (!eof) {
if (imageSeq > 0)
validateReadableOutputFile(ofd);
if (cmdline.verbose)
pm_message("Converting Image %u", imageSeq);
convertImage(ifP, tifP, inputFileDescription, cmdline);
success = TIFFWriteDirectory(tifP);
if (!success)
pm_error("Unable to write TIFF image %u to file. "
"tifWriteDirectory() failed.", imageSeq);
++imageSeq;
}
}
destroyTiffGenerator(cmdline.writeMethod, tifP, ofd);
pm_close(ifP);
return 0;
}
|