1 /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */
5 * Copyright (c) 1988-1997 Sam Leffler
6 * Copyright (c) 1991-1997 Silicon Graphics, Inc.
8 * Permission to use, copy, modify, distribute, and sell this software and
9 * its documentation for any purpose is hereby granted without fee, provided
10 * that (i) the above copyright notices and this permission notice appear in
11 * all copies of the software and related documentation, and (ii) the names of
12 * Sam Leffler and Silicon Graphics may not be used in any advertising or
13 * publicity relating to the software without the specific, prior written
14 * permission of Sam Leffler and Silicon Graphics.
16 * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
17 * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
18 * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
20 * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
21 * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
22 * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
23 * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
24 * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
29 * Modified for use as Evince TIFF ps exporter by
30 * Matthew S. Wilson <msw@rpath.com>
31 * Modifications Copyright (C) 2005 rpath, Inc.
37 #include <stdlib.h> /* for atof */
44 #include <glib/gstdio.h>
52 * I (Bruce A. Mallett) added this revision history comment ;)
54 * Fixed PS_Lvl2page() code which outputs non-ASCII85 raw
55 * data. Moved test for when to output a line break to
56 * *after* the output of a character. This just serves
57 * to fix an eye-nuisance where the first line of raw
58 * data was one character shorter than subsequent lines.
60 * Added an experimental ASCII85 encoder which can be used
61 * only when there is a single buffer of bytes to be encoded.
62 * This version is much faster at encoding a straight-line
63 * buffer of data because it can avoid alot of the loop
64 * overhead of the byte-by-bye version. To use this version
65 * you need to define EXP_ASCII85ENCODER (experimental ...).
67 * Added bug fix given by Michael Schmidt to PS_Lvl2page()
68 * in which an end-of-data marker ('>') was not being output
69 * when producing non-ASCII85 encoded PostScript Level 2
72 * Fixed PS_Lvl2colorspace() so that it no longer assumes that
73 * a TIFF having more than 2 planes is a CMYK. This routine
74 * no longer looks at the samples per pixel but instead looks
75 * at the "photometric" value. This change allows support of
78 * Modified the PostScript L2 imaging loop so as to test if
79 * the input stream is still open before attempting to do a
80 * flushfile on it. This was done because some RIPs close
81 * the stream after doing the image operation.
83 * Got rid of the realloc() being done inside a loop in the
84 * PSRawDataBW() routine. The code now walks through the
85 * byte-size array outside the loop to determine the largest
86 * size memory block that will be needed.
88 * Added "-m" switch to ask tiff2ps to, where possible, use the
89 * "imagemask" operator instead of the "image" operator.
91 * Added the "-i #" switch to allow interpolation to be disabled.
93 * Unrolled a loop or two to improve performance.
97 * Define EXP_ASCII85ENCODER if you want to use an experimental
98 * version of the ASCII85 encoding routine. The advantage of
99 * using this routine is that tiff2ps will convert to ASCII85
100 * encoding at between 3 and 4 times the speed as compared to
101 * using the old (non-experimental) encoder. The disadvantage
102 * is that you will be using a new (and unproven) encoding
103 * routine. So user beware, you have been warned!
106 #define EXP_ASCII85ENCODER
109 * NB: this code assumes uint32 works with printf's %l[ud].
112 struct _TIFF2PSContext
114 char *filename; /* input filename */
115 FILE *fd; /* output file stream */
116 int ascii85; /* use ASCII85 encoding */
117 int interpolate; /* interpolate level2 image */
118 int level2; /* generate PostScript level 2 */
119 int level3; /* generate PostScript level 3 */
120 int generateEPSF; /* generate Encapsulated PostScript */
121 int PSduplex; /* enable duplex printing */
122 int PStumble; /* enable top edge binding */
123 int PSavoiddeadzone; /* enable avoiding printer deadzone */
124 double maxPageHeight; /* maximum size to fit on page */
125 double splitOverlap; /* amount for split pages to overlag */
126 int rotate; /* rotate image by 180 degrees */
127 int useImagemask; /* Use imagemask instead of image operator */
128 uint16 res_unit; /* Resolution units: 2 - inches, 3 - cm */
129 int npages; /* number of pages processed */
131 tsize_t tf_bytesperrow;
132 tsize_t ps_bytesperrow;
133 tsize_t tf_rowsperstrip;
134 tsize_t tf_numberstrips;
137 * ASCII85 Encoding Support.
139 unsigned char ascii85buf[10];
142 uint16 samplesperpixel;
143 uint16 bitspersample;
144 uint16 planarconfiguration;
151 static void PSpage(TIFF2PSContext*, TIFF*, uint32, uint32);
152 static void PSColorContigPreamble(TIFF2PSContext*, uint32, uint32, int);
153 static void PSColorSeparatePreamble(TIFF2PSContext*, uint32, uint32, int);
154 static void PSDataColorContig(TIFF2PSContext*, TIFF*, uint32, uint32, int);
155 static void PSDataColorSeparate(TIFF2PSContext*, TIFF*, uint32, uint32, int);
156 static void PSDataPalette(TIFF2PSContext*, TIFF*, uint32, uint32);
157 static void PSDataBW(TIFF2PSContext*, TIFF*, uint32, uint32);
158 static void Ascii85Init(TIFF2PSContext*);
159 static void Ascii85Put(TIFF2PSContext*, unsigned char);
160 static void Ascii85Flush(TIFF2PSContext*);
161 static void PSHead(TIFF2PSContext*, TIFF*, uint32, uint32,
162 double, double, double, double);
163 static void PSTail(TIFF2PSContext*);
165 #if defined( EXP_ASCII85ENCODER )
166 static int Ascii85EncodeBlock(TIFF2PSContext*, uint8 * ascii85_p,
167 unsigned f_eod, const uint8 * raw_p, int raw_l);
170 TIFF2PSContext* tiff2ps_context_new(const gchar *filename) {
173 ctx = g_new0(TIFF2PSContext, 1);
174 ctx->filename = g_strdup(filename);
175 ctx->fd = g_fopen(ctx->filename, "w");
178 ctx->interpolate = TRUE; /* interpolate level2 image */
179 ctx->PSavoiddeadzone = TRUE; /* enable avoiding printer deadzone */
183 void tiff2ps_context_finalize(TIFF2PSContext *ctx) {
186 g_free(ctx->filename);
191 checkImage(TIFF2PSContext *ctx, TIFF* tif)
193 switch (ctx->photometric) {
194 case PHOTOMETRIC_YCBCR:
195 if ((ctx->compression == COMPRESSION_JPEG
196 || ctx->compression == COMPRESSION_OJPEG)
197 && ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
198 /* can rely on libjpeg to convert to RGB */
199 TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE,
201 ctx->photometric = PHOTOMETRIC_RGB;
203 if (ctx->level2 || ctx->level3)
205 TIFFError(ctx->filename, "Can not handle image with %s",
206 "Ctx->PhotometricInterpretation=YCbCr");
210 case PHOTOMETRIC_RGB:
211 if (ctx->alpha && ctx->bitspersample != 8) {
212 TIFFError(ctx->filename,
213 "Can not handle %d-bit/sample RGB image with ctx->alpha",
218 case PHOTOMETRIC_SEPARATED:
219 case PHOTOMETRIC_PALETTE:
220 case PHOTOMETRIC_MINISBLACK:
221 case PHOTOMETRIC_MINISWHITE:
223 case PHOTOMETRIC_LOGL:
224 case PHOTOMETRIC_LOGLUV:
225 if (ctx->compression != COMPRESSION_SGILOG &&
226 ctx->compression != COMPRESSION_SGILOG24) {
227 TIFFError(ctx->filename,
228 "Can not handle %s data with ctx->compression other than SGILog",
229 (ctx->photometric == PHOTOMETRIC_LOGL) ?
234 /* rely on library to convert to RGB/greyscale */
235 TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
236 ctx->photometric = (ctx->photometric == PHOTOMETRIC_LOGL) ?
237 PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB;
238 ctx->bitspersample = 8;
240 case PHOTOMETRIC_CIELAB:
243 TIFFError(ctx->filename,
244 "Can not handle image with Ctx->PhotometricInterpretation=%d",
248 switch (ctx->bitspersample) {
253 TIFFError(ctx->filename, "Can not handle %d-bit/sample image",
257 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
258 ctx->extrasamples > 0)
259 TIFFWarning(ctx->filename, "Ignoring extra samples");
263 #define PS_UNIT_SIZE 72.0F
264 #define PSUNITS(npix,res) ((npix) * (PS_UNIT_SIZE / (res)))
266 static char RGBcolorimage[] = "\
269 dup length 3 idiv string 0 3 0\n\
271 add 2 1 roll 1 sub dup 0 eq {\n\
278 } { 2 1 roll } ifelse\n\
282 /colorimage where {pop} {\n\
283 /colorimage {pop pop /rgbproc exch def {bwproc} image} bind def\n\
288 * Adobe Photoshop requires a comment line of the form:
290 * %ImageData: <cols> <rows> <depth> <main channels> <pad channels>
291 * <block size> <1 for binary|2 for hex> "data start"
293 * It is claimed to be part of some future revision of the EPS spec.
296 PhotoshopBanner(TIFF2PSContext* ctx, uint32 w, uint32 h, int bs, int nc,
299 fprintf(ctx->fd, "%%ImageData: %ld %ld %d %d 0 %d 2 \"",
300 (long) w, (long) h, ctx->bitspersample, nc, bs);
301 fprintf(ctx->fd, startline, nc);
302 fprintf(ctx->fd, "\"\n");
306 * pw : image width in pixels
307 * ph : image height in pixels
308 * pprw : image width in PS units (72 dpi)
309 * pprh : image height in PS units (72 dpi)
312 setupPageState(TIFF2PSContext *ctx, TIFF* tif, uint32* pw, uint32* ph,
313 double* pprw, double* pprh)
315 float xres = 0.0F, yres = 0.0F;
317 TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, pw);
318 TIFFGetField(tif, TIFFTAG_IMAGELENGTH, ph);
319 if (ctx->res_unit == 0)
320 TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &ctx->res_unit);
322 * Calculate printable area.
324 if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres)
325 || fabs(xres) < 0.0000001)
327 if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres)
328 || fabs(yres) < 0.0000001)
330 switch (ctx->res_unit) {
331 case RESUNIT_CENTIMETER:
332 xres *= 2.54F, yres *= 2.54F;
338 xres *= PS_UNIT_SIZE, yres *= PS_UNIT_SIZE;
341 *pprh = PSUNITS(*ph, yres);
342 *pprw = PSUNITS(*pw, xres);
346 isCCITTCompression(TIFF* tif)
349 TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
350 return (compress == COMPRESSION_CCITTFAX3 ||
351 compress == COMPRESSION_CCITTFAX4 ||
352 compress == COMPRESSION_CCITTRLE ||
353 compress == COMPRESSION_CCITTRLEW);
356 static char *hex = "0123456789abcdef";
359 * imagewidth & imageheight are 1/72 inches
360 * pagewidth & pageheight are inches
363 PlaceImage(TIFF2PSContext *ctx, double pagewidth, double pageheight,
364 double imagewidth, double imageheight, int splitpage,
365 double lm, double bm, int cnt)
371 double left_offset = lm * PS_UNIT_SIZE;
372 double bottom_offset = bm * PS_UNIT_SIZE;
373 double subimageheight;
376 /* buffers for locale-insitive number formatting */
377 gchar buf[2][G_ASCII_DTOSTR_BUF_SIZE];
379 pagewidth *= PS_UNIT_SIZE;
380 pageheight *= PS_UNIT_SIZE;
382 if (ctx->maxPageHeight==0)
385 splitheight = ctx->maxPageHeight * PS_UNIT_SIZE;
386 overlap = ctx->splitOverlap * PS_UNIT_SIZE;
390 * if too wide, scrunch to fit
391 * else leave it alone
393 if (imagewidth <= pagewidth) {
400 * if too long, scrunch to fit
401 * if too short, move to top of page
403 if (imageheight <= pageheight) {
404 yscale = imageheight;
405 ytran = pageheight - imageheight;
406 } else if (imageheight > pageheight &&
407 (splitheight == 0 || imageheight <= splitheight)) {
409 } else /* imageheight > splitheight */ {
410 subimageheight = imageheight - (pageheight-overlap)*splitpage;
411 if (subimageheight <= pageheight) {
412 yscale = imageheight;
413 ytran = pageheight - subimageheight;
415 } else if ( subimageheight > pageheight && subimageheight <= splitheight) {
416 yscale = imageheight * pageheight / subimageheight;
419 } else /* sumimageheight > splitheight */ {
420 yscale = imageheight;
421 ytran = pageheight - subimageheight;
426 bottom_offset += ytran / (cnt?2:1);
428 left_offset += xtran / 2;
430 fprintf(ctx->fd, "%s %s translate\n",
431 g_ascii_dtostr(buf[0], sizeof(buf[0]), left_offset),
432 g_ascii_dtostr(buf[1], sizeof(buf[1]), bottom_offset));
433 fprintf(ctx->fd, "%s %s scale\n",
434 g_ascii_dtostr(buf[0], sizeof(buf[0]), xscale),
435 g_ascii_dtostr(buf[1], sizeof(buf[1]), yscale));
437 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
444 tiff2ps_process_page(TIFF2PSContext* ctx, TIFF* tif, double pw, double ph,
445 double lm, double bm, gboolean cnt)
451 double left_offset = lm * PS_UNIT_SIZE;
452 double bottom_offset = bm * PS_UNIT_SIZE;
455 /* buffers for locale-insitive number formatting */
456 gchar buf[2][G_ASCII_DTOSTR_BUF_SIZE];
458 if (!TIFFGetField(tif, TIFFTAG_XPOSITION, &ox))
460 if (!TIFFGetField(tif, TIFFTAG_YPOSITION, &oy))
462 setupPageState(ctx, tif, &w, &h, &prw, &prh);
464 ctx->tf_numberstrips = TIFFNumberOfStrips(tif);
465 TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP,
466 &ctx->tf_rowsperstrip);
467 setupPageState(ctx, tif, &w, &h, &prw, &prh);
469 PSHead(ctx, tif, w, h, prw, prh, ox, oy);
470 TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE,
471 &ctx->bitspersample);
472 TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL,
473 &ctx->samplesperpixel);
474 TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG,
475 &ctx->planarconfiguration);
476 TIFFGetField(tif, TIFFTAG_COMPRESSION, &ctx->compression);
477 TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
478 &ctx->extrasamples, &sampleinfo);
479 ctx->alpha = (ctx->extrasamples == 1 &&
480 sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
481 if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &ctx->photometric)) {
482 switch (ctx->samplesperpixel - ctx->extrasamples) {
484 if (isCCITTCompression(tif))
485 ctx->photometric = PHOTOMETRIC_MINISWHITE;
487 ctx->photometric = PHOTOMETRIC_MINISBLACK;
490 ctx->photometric = PHOTOMETRIC_RGB;
493 ctx->photometric = PHOTOMETRIC_SEPARATED;
497 if (checkImage(ctx, tif)) {
498 ctx->tf_bytesperrow = TIFFScanlineSize(tif);
500 fprintf(ctx->fd, "%%%%Page: %d %d\n", ctx->npages,
502 if (!ctx->generateEPSF && ( ctx->level2 || ctx->level3 )) {
503 double psw = 0.0, psh = 0.0;
505 psw = pw * PS_UNIT_SIZE;
506 if (ctx->res_unit == RESUNIT_CENTIMETER)
509 psw=ctx->rotate ? prh:prw;
511 psh = ph * PS_UNIT_SIZE;
512 if (ctx->res_unit == RESUNIT_CENTIMETER)
515 psh=ctx->rotate ? prw:prh;
517 "1 dict begin /PageSize [ %s %s ] def currentdict end setpagedevice\n",
518 g_ascii_dtostr(buf[0], sizeof(buf[0]), psw),
519 g_ascii_dtostr(buf[1], sizeof(buf[1]), psh));
521 "<<\n /Policies <<\n /PageSize 3\n >>\n>> setpagedevice\n",
524 fprintf(ctx->fd, "gsave\n");
525 fprintf(ctx->fd, "100 dict begin\n");
526 if (pw != 0 || ph != 0) {
531 if (ctx->maxPageHeight) { /* used -H option */
532 split = PlaceImage(ctx,pw,ph,prw,prh,
535 PSpage(ctx, tif, w, h);
536 fprintf(ctx->fd, "end\n");
537 fprintf(ctx->fd, "grestore\n");
538 fprintf(ctx->fd, "showpage\n");
540 fprintf(ctx->fd, "%%%%Page: %d %d\n",
541 ctx->npages, ctx->npages);
542 fprintf(ctx->fd, "gsave\n");
543 fprintf(ctx->fd, "100 dict begin\n");
544 split = PlaceImage(ctx,pw,ph,prw,prh,
551 /* NB: maintain image aspect ratio */
552 scale = pw/prw < ph/prh ?
558 (ph - prh * scale) / 2;
560 (pw - prw * scale) / 2;
562 fprintf(ctx->fd, "%s %s translate\n",
563 g_ascii_dtostr(buf[0], sizeof(buf[0]), left_offset),
564 g_ascii_dtostr(buf[1], sizeof(buf[1]), bottom_offset));
565 fprintf(ctx->fd, "%s %s scale\n",
566 g_ascii_dtostr(buf[0], sizeof(buf[0]), prw * scale),
567 g_ascii_dtostr(buf[1], sizeof(buf[1]), prh * scale));
569 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
572 fprintf(ctx->fd, "%s %s scale\n",
573 g_ascii_dtostr(buf[0], sizeof(buf[0]), prw),
574 g_ascii_dtostr(buf[1], sizeof(buf[1]), prh));
576 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
578 PSpage(ctx, tif, w, h);
579 fprintf(ctx->fd, "end\n");
580 fprintf(ctx->fd, "grestore\n");
581 fprintf(ctx->fd, "showpage\n");
586 static char DuplexPreamble[] = "\
587 %%BeginFeature: *Duplex True\n\
589 /languagelevel where { pop languagelevel } { 1 } ifelse\n\
590 2 ge { 1 dict dup /Duplex true put setpagedevice }\n\
591 { statusdict /setduplex known { statusdict begin setduplex true end } if\n\
597 static char TumblePreamble[] = "\
598 %%BeginFeature: *Tumble True\n\
600 /languagelevel where { pop languagelevel } { 1 } ifelse\n\
601 2 ge { 1 dict dup /Tumble true put setpagedevice }\n\
602 { statusdict /settumble known { statusdict begin true settumble end } if\n\
608 static char AvoidDeadZonePreamble[] = "\
609 gsave newpath clippath pathbbox grestore\n\
610 4 2 roll 2 copy translate\n\
611 exch 3 1 roll sub 3 1 roll sub exch\n\
612 currentpagedevice /PageSize get aload pop\n\
613 exch 3 1 roll div 3 1 roll div abs exch abs\n\
614 2 copy gt { exch } if pop\n\
615 dup 1 lt { dup scale } { pop } ifelse\n\
619 PSHead(TIFF2PSContext *ctx, TIFF *tif, uint32 w, uint32 h,
620 double pw, double ph, double ox, double oy)
624 (void) tif; (void) w; (void) h;
626 fprintf(ctx->fd, "%%!PS-Adobe-3.0%s\n",
627 ctx->generateEPSF ? " EPSF-3.0" : "");
628 fprintf(ctx->fd, "%%%%Creator: Evince\n");
629 fprintf(ctx->fd, "%%%%CreationDate: %s", ctime(&t));
630 fprintf(ctx->fd, "%%%%DocumentData: Clean7Bit\n");
631 fprintf(ctx->fd, "%%%%Origin: %ld %ld\n", (long) ox, (long) oy);
632 /* NB: should use PageBoundingBox */
633 fprintf(ctx->fd, "%%%%BoundingBox: 0 0 %ld %ld\n",
634 (long) ceil(pw), (long) ceil(ph));
635 fprintf(ctx->fd, "%%%%LanguageLevel: %d\n",
636 (ctx->level3 ? 3 : (ctx->level2 ? 2 : 1)));
637 fprintf(ctx->fd, "%%%%Pages: (atend)\n");
638 fprintf(ctx->fd, "%%%%EndComments\n");
639 fprintf(ctx->fd, "%%%%BeginSetup\n");
641 fprintf(ctx->fd, "%s", DuplexPreamble);
643 fprintf(ctx->fd, "%s", TumblePreamble);
644 if (ctx->PSavoiddeadzone && (ctx->level2 || ctx->level3))
645 fprintf(ctx->fd, "%s", AvoidDeadZonePreamble);
646 fprintf(ctx->fd, "%%%%EndSetup\n");
650 PSTail(TIFF2PSContext *ctx)
654 fprintf(ctx->fd, "%%%%Trailer\n");
655 fprintf(ctx->fd, "%%%%Pages: %d\n", ctx->npages);
656 fprintf(ctx->fd, "%%%%EOF\n");
660 checkcmap(TIFF2PSContext* ctx, TIFF* tif, int n,
661 uint16* r, uint16* g, uint16* b)
665 if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
667 TIFFWarning(ctx->filename, "Assuming 8-bit colormap");
672 PS_Lvl2colorspace(TIFF2PSContext* ctx, TIFF* tif)
674 uint16 *rmap, *gmap, *bmap;
676 const char * colorspace_p;
678 switch ( ctx->photometric )
680 case PHOTOMETRIC_SEPARATED:
681 colorspace_p = "CMYK";
684 case PHOTOMETRIC_RGB:
685 colorspace_p = "RGB";
689 colorspace_p = "Gray";
693 * Set up PostScript Level 2 colorspace according to
694 * section 4.8 in the PostScript refenence manual.
696 fputs("% PostScript Level 2 only.\n", ctx->fd);
697 if (ctx->photometric != PHOTOMETRIC_PALETTE) {
698 if (ctx->photometric == PHOTOMETRIC_YCBCR) {
701 fprintf(ctx->fd, "/Device%s setcolorspace\n", colorspace_p );
706 * Set up an indexed/palette colorspace
708 num_colors = (1 << ctx->bitspersample);
709 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
710 TIFFError(ctx->filename,
711 "Palette image w/o \"Colormap\" tag");
714 if (checkcmap(ctx, tif, num_colors, rmap, gmap, bmap) == 16) {
716 * Convert colormap to 8-bits values.
718 #define CVT(x) (((x) * 255) / ((1L<<16)-1))
719 for (i = 0; i < num_colors; i++) {
720 rmap[i] = CVT(rmap[i]);
721 gmap[i] = CVT(gmap[i]);
722 bmap[i] = CVT(bmap[i]);
726 fprintf(ctx->fd, "[ /Indexed /DeviceRGB %d", num_colors - 1);
729 fputs("\n<~", ctx->fd);
730 ctx->ascii85breaklen -= 2;
732 fputs(" <", ctx->fd);
733 for (i = 0; i < num_colors; i++) {
735 Ascii85Put(ctx, (unsigned char)rmap[i]);
736 Ascii85Put(ctx, (unsigned char)gmap[i]);
737 Ascii85Put(ctx, (unsigned char)bmap[i]);
739 fputs((i % 8) ? " " : "\n ", ctx->fd);
740 fprintf(ctx->fd, "%02x%02x%02x",
741 rmap[i], gmap[i], bmap[i]);
747 fputs(">\n", ctx->fd);
748 fputs("] setcolorspace\n", ctx->fd);
752 PS_Lvl2ImageDict(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
755 uint32 tile_width, tile_height;
756 uint16 predictor, minsamplevalue, maxsamplevalue;
758 char im_h[64], im_x[64], im_y[64];
759 char * imageOp = "image";
761 if ( ctx->useImagemask && (ctx->bitspersample == 1) )
762 imageOp = "imagemask";
764 (void)strcpy(im_x, "0");
765 (void)sprintf(im_y, "%lu", (long) h);
766 (void)sprintf(im_h, "%lu", (long) h);
769 if (TIFFIsTiled(tif)) {
770 repeat_count = TIFFNumberOfTiles(tif);
771 TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width);
772 TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height);
773 if (tile_width > w || tile_height > h ||
774 (w % tile_width) != 0 || (h % tile_height != 0)) {
776 * The tiles does not fit image width and height.
777 * Set up a clip rectangle for the image unit square.
779 fputs("0 0 1 1 rectclip\n", ctx->fd);
781 if (tile_width < w) {
782 fputs("/im_x 0 def\n", ctx->fd);
783 (void)strcpy(im_x, "im_x neg");
785 if (tile_height < h) {
786 fputs("/im_y 0 def\n", ctx->fd);
787 (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
790 repeat_count = ctx->tf_numberstrips;
791 tile_height = ctx->tf_rowsperstrip;
794 if (repeat_count > 1) {
795 fputs("/im_y 0 def\n", ctx->fd);
796 fprintf(ctx->fd, "/im_h %lu def\n",
797 (unsigned long) tile_height);
798 (void)strcpy(im_h, "im_h");
799 (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
804 * Output start of exec block
806 fputs("{ % exec\n", ctx->fd);
808 if (repeat_count > 1)
809 fprintf(ctx->fd, "%d { %% repeat\n", repeat_count);
812 * Output filter options and image dictionary.
815 fputs(" /im_stream currentfile /ASCII85Decode filter def\n",
817 fputs(" <<\n", ctx->fd);
818 fputs(" /ImageType 1\n", ctx->fd);
819 fprintf(ctx->fd, " /Width %lu\n", (unsigned long) tile_width);
821 * Workaround for some software that may crash when last strip
822 * of image contains fewer number of scanlines than specified
823 * by the `/Height' variable. So for stripped images with multiple
824 * strips we will set `/Height' as `im_h', because one is
825 * recalculated for each strip - including the (smaller) final strip.
826 * For tiled images and images with only one strip `/Height' will
827 * contain number of scanlines in tile (or image height in case of
828 * one-stripped image).
830 if (TIFFIsTiled(tif) || ctx->tf_numberstrips == 1)
831 fprintf(ctx->fd, " /Height %lu\n", (unsigned long) tile_height);
833 fprintf(ctx->fd, " /Height im_h\n");
835 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE && ctx->samplesperpixel > 1)
836 fputs(" /MultipleDataSources true\n", ctx->fd);
837 fprintf(ctx->fd, " /ImageMatrix [ %lu 0 0 %ld %s %s ]\n",
838 (unsigned long) w, - (long)h, im_x, im_y);
839 fprintf(ctx->fd, " /BitsPerComponent %d\n", ctx->bitspersample);
840 fprintf(ctx->fd, " /Ctx->Interpolate %s\n", ctx->interpolate ? "true" : "false");
842 switch (ctx->samplesperpixel - ctx->extrasamples) {
844 switch (ctx->photometric) {
845 case PHOTOMETRIC_MINISBLACK:
846 fputs(" /Decode [0 1]\n", ctx->fd);
848 case PHOTOMETRIC_MINISWHITE:
849 switch (ctx->compression) {
850 case COMPRESSION_CCITTRLE:
851 case COMPRESSION_CCITTRLEW:
852 case COMPRESSION_CCITTFAX3:
853 case COMPRESSION_CCITTFAX4:
855 * Manage inverting with /Blackis1 flag
856 * since there migth be uncompressed parts
858 fputs(" /Decode [0 1]\n", ctx->fd);
864 fputs(" /Decode [1 0]\n", ctx->fd);
868 case PHOTOMETRIC_PALETTE:
869 TIFFGetFieldDefaulted(tif, TIFFTAG_MINSAMPLEVALUE,
871 TIFFGetFieldDefaulted(tif, TIFFTAG_MAXSAMPLEVALUE,
873 fprintf(ctx->fd, " /Decode [%u %u]\n",
874 minsamplevalue, maxsamplevalue);
880 fputs(" /Decode [0 1]\n", ctx->fd);
885 switch (ctx->photometric) {
886 case PHOTOMETRIC_RGB:
887 fputs(" /Decode [0 1 0 1 0 1]\n", ctx->fd);
889 case PHOTOMETRIC_MINISWHITE:
890 case PHOTOMETRIC_MINISBLACK:
895 fputs(" /Decode [0 1 0 1 0 1]\n", ctx->fd);
903 fputs(" /Decode [0 1 0 1 0 1 0 1]\n", ctx->fd);
906 fputs(" /DataSource", ctx->fd);
907 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
908 ctx->samplesperpixel > 1)
909 fputs(" [", ctx->fd);
911 fputs(" im_stream", ctx->fd);
913 fputs(" currentfile /ASCIIHexDecode filter", ctx->fd);
916 switch (ctx->compression) {
917 case COMPRESSION_NONE: /* 1: uncompressed */
919 case COMPRESSION_CCITTRLE: /* 2: CCITT modified Huffman RLE */
920 case COMPRESSION_CCITTRLEW: /* 32771: #1 w/ word alignment */
921 case COMPRESSION_CCITTFAX3: /* 3: CCITT Group 3 fax encoding */
922 case COMPRESSION_CCITTFAX4: /* 4: CCITT Group 4 fax encoding */
923 fputs("\n\t<<\n", ctx->fd);
924 if (ctx->compression == COMPRESSION_CCITTFAX3) {
927 fputs("\t /EndOfLine true\n", ctx->fd);
928 fputs("\t /EndOfBlock false\n", ctx->fd);
929 if (!TIFFGetField(tif, TIFFTAG_GROUP3OPTIONS,
932 if (g3_options & GROUP3OPT_2DENCODING)
933 fprintf(ctx->fd, "\t /K %s\n", im_h);
934 if (g3_options & GROUP3OPT_UNCOMPRESSED)
935 fputs("\t /Uncompressed true\n", ctx->fd);
936 if (g3_options & GROUP3OPT_FILLBITS)
937 fputs("\t /EncodedByteAlign true\n", ctx->fd);
939 if (ctx->compression == COMPRESSION_CCITTFAX4) {
942 fputs("\t /K -1\n", ctx->fd);
943 TIFFGetFieldDefaulted(tif, TIFFTAG_GROUP4OPTIONS,
945 if (g4_options & GROUP4OPT_UNCOMPRESSED)
946 fputs("\t /Uncompressed true\n", ctx->fd);
948 if (!(tile_width == w && w == 1728U))
949 fprintf(ctx->fd, "\t /Columns %lu\n",
950 (unsigned long) tile_width);
951 fprintf(ctx->fd, "\t /Rows %s\n", im_h);
952 if (ctx->compression == COMPRESSION_CCITTRLE ||
953 ctx->compression == COMPRESSION_CCITTRLEW) {
954 fputs("\t /EncodedByteAlign true\n", ctx->fd);
955 fputs("\t /EndOfBlock false\n", ctx->fd);
957 if (ctx->photometric == PHOTOMETRIC_MINISBLACK)
958 fputs("\t /BlackIs1 true\n", ctx->fd);
959 fprintf(ctx->fd, "\t>> /CCITTFaxDecode filter");
961 case COMPRESSION_LZW: /* 5: Lempel-Ziv & Welch */
962 TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
963 if (predictor == 2) {
964 fputs("\n\t<<\n", ctx->fd);
965 fprintf(ctx->fd, "\t /Predictor %u\n", predictor);
966 fprintf(ctx->fd, "\t /Columns %lu\n",
967 (unsigned long) tile_width);
968 fprintf(ctx->fd, "\t /Colors %u\n", ctx->samplesperpixel);
969 fprintf(ctx->fd, "\t /BitsPerComponent %u\n",
971 fputs("\t>>", ctx->fd);
973 fputs(" /LZWDecode filter", ctx->fd);
975 case COMPRESSION_DEFLATE: /* 5: ZIP */
976 case COMPRESSION_ADOBE_DEFLATE:
978 TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
980 fprintf(ctx->fd, "\t %% PostScript Level 3 only.");
981 fputs("\n\t<<\n", ctx->fd);
982 fprintf(ctx->fd, "\t /Predictor %u\n", predictor);
983 fprintf(ctx->fd, "\t /Columns %lu\n",
984 (unsigned long) tile_width);
985 fprintf(ctx->fd, "\t /Colors %u\n", ctx->samplesperpixel);
986 fprintf(ctx->fd, "\t /BitsPerComponent %u\n",
988 fputs("\t>>", ctx->fd);
990 fputs(" /FlateDecode filter", ctx->fd);
992 use_rawdata = FALSE ;
995 case COMPRESSION_PACKBITS: /* 32773: Macintosh RLE */
996 fputs(" /RunLengthDecode filter", ctx->fd);
999 case COMPRESSION_OJPEG: /* 6: !6.0 JPEG */
1000 case COMPRESSION_JPEG: /* 7: %JPEG DCT ctx->compression */
1003 * Code not tested yet
1005 fputs(" /DCTDecode filter", ctx->fd);
1008 use_rawdata = FALSE;
1011 case COMPRESSION_NEXT: /* 32766: NeXT 2-bit RLE */
1012 case COMPRESSION_THUNDERSCAN: /* 32809: ThunderScan RLE */
1013 case COMPRESSION_PIXARFILM: /* 32908: Pixar companded 10bit LZW */
1014 case COMPRESSION_JBIG: /* 34661: ISO JBIG */
1015 use_rawdata = FALSE;
1017 case COMPRESSION_SGILOG: /* 34676: SGI LogL or LogLuv */
1018 case COMPRESSION_SGILOG24: /* 34677: SGI 24-bit LogLuv */
1019 use_rawdata = FALSE;
1025 use_rawdata = FALSE;
1028 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
1029 ctx->samplesperpixel > 1) {
1033 * NOTE: This code does not work yet...
1035 for (i = 1; i < ctx->samplesperpixel; i++)
1036 fputs(" dup", ctx->fd);
1037 fputs(" ]", ctx->fd);
1040 fprintf( ctx->fd, "\n >> %s\n", imageOp );
1042 fputs(" im_stream status { im_stream flushfile } if\n", ctx->fd);
1043 if (repeat_count > 1) {
1044 if (tile_width < w) {
1045 fprintf(ctx->fd, " /im_x im_x %lu add def\n",
1046 (unsigned long) tile_width);
1047 if (tile_height < h) {
1048 fprintf(ctx->fd, " im_x %lu ge {\n",
1050 fputs(" /im_x 0 def\n", ctx->fd);
1051 fprintf(ctx->fd, " /im_y im_y %lu add def\n",
1052 (unsigned long) tile_height);
1053 fputs(" } if\n", ctx->fd);
1056 if (tile_height < h) {
1057 if (tile_width >= w) {
1058 fprintf(ctx->fd, " /im_y im_y %lu add def\n",
1059 (unsigned long) tile_height);
1060 if (!TIFFIsTiled(tif)) {
1061 fprintf(ctx->fd, " /im_h %lu im_y sub",
1063 fprintf(ctx->fd, " dup %lu gt { pop",
1064 (unsigned long) tile_height);
1065 fprintf(ctx->fd, " %lu } if def\n",
1066 (unsigned long) tile_height);
1070 fputs("} repeat\n", ctx->fd);
1073 * End of exec function
1075 fputs("}\n", ctx->fd);
1077 return(use_rawdata);
1083 PS_Lvl2page(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1086 int use_rawdata, tiled_image, breaklen = MAXLINE;
1087 uint32 chunk_no, num_chunks, *bc;
1088 unsigned char *buf_data, *cp;
1089 tsize_t chunk_size, byte_count;
1091 #if defined( EXP_ASCII85ENCODER )
1092 int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
1093 uint8 * ascii85_p = 0; /* Holds ASCII85 encoded data */
1096 PS_Lvl2colorspace(ctx, tif);
1097 use_rawdata = PS_Lvl2ImageDict(ctx, tif, w, h);
1099 /* See http://bugzilla.remotesensing.org/show_bug.cgi?id=80 */
1100 #ifdef ENABLE_BROKEN_BEGINENDDATA
1101 fputs("%%BeginData:\n", ctx->fd);
1103 fputs("exec\n", ctx->fd);
1105 tiled_image = TIFFIsTiled(tif);
1107 num_chunks = TIFFNumberOfTiles(tif);
1108 TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc);
1110 num_chunks = TIFFNumberOfStrips(tif);
1111 TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
1115 chunk_size = (tsize_t) bc[0];
1116 for (chunk_no = 1; chunk_no < num_chunks; chunk_no++)
1117 if ((tsize_t) bc[chunk_no] > chunk_size)
1118 chunk_size = (tsize_t) bc[chunk_no];
1121 chunk_size = TIFFTileSize(tif);
1123 chunk_size = TIFFStripSize(tif);
1125 buf_data = (unsigned char *)_TIFFmalloc(chunk_size);
1127 TIFFError(ctx->filename, "Can't alloc %u bytes for %s.",
1128 chunk_size, tiled_image ? "tiles" : "strips");
1132 #if defined( EXP_ASCII85ENCODER )
1133 if ( ctx->ascii85 ) {
1135 * Allocate a buffer to hold the ASCII85 encoded data. Note
1136 * that it is allocated with sufficient room to hold the
1137 * encoded data (5*chunk_size/4) plus the EOD marker (+8)
1138 * and formatting line breaks. The line breaks are more
1139 * than taken care of by using 6*chunk_size/4 rather than
1143 ascii85_p = _TIFFmalloc( (chunk_size+(chunk_size/2)) + 8 );
1146 _TIFFfree( buf_data );
1148 TIFFError( ctx->filename,
1149 "Cannot allocate ASCII85 encoding buffer." );
1155 TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
1156 for (chunk_no = 0; chunk_no < num_chunks; chunk_no++) {
1163 byte_count = TIFFReadRawTile(tif, chunk_no,
1164 buf_data, chunk_size);
1166 byte_count = TIFFReadRawStrip(tif, chunk_no,
1167 buf_data, chunk_size);
1168 if (fillorder == FILLORDER_LSB2MSB)
1169 TIFFReverseBits(buf_data, byte_count);
1172 byte_count = TIFFReadEncodedTile(tif,
1176 byte_count = TIFFReadEncodedStrip(tif,
1180 if (byte_count < 0) {
1181 TIFFError(ctx->filename, "Can't read %s %d.",
1182 tiled_image ? "tile" : "strip", chunk_no);
1184 Ascii85Put(ctx, '\0');
1187 * For images with ctx->alpha, matte against a white background;
1188 * i.e. Cback * (1 - Aimage) where Cback = 1. We will fill the
1189 * lower part of the buffer with the modified values.
1191 * XXX: needs better solution
1194 int adjust, i, j = 0;
1195 int ncomps = ctx->samplesperpixel - ctx->extrasamples;
1196 for (i = 0; i < byte_count; i+=ctx->samplesperpixel) {
1197 adjust = 255 - buf_data[i + ncomps];
1200 buf_data[j++] = buf_data[i] + adjust;
1203 buf_data[j++] = buf_data[i] + adjust;
1204 buf_data[j++] = buf_data[i+1] + adjust;
1207 buf_data[j++] = buf_data[i] + adjust;
1208 buf_data[j++] = buf_data[i+1] + adjust;
1209 buf_data[j++] = buf_data[i+2] + adjust;
1217 #if defined( EXP_ASCII85ENCODER )
1218 ascii85_l = Ascii85EncodeBlock(ctx, ascii85_p, 1,
1219 buf_data, byte_count);
1221 if ( ascii85_l > 0 )
1222 fwrite( ascii85_p, ascii85_l, 1, ctx->fd );
1224 for (cp = buf_data; byte_count > 0; byte_count--)
1225 Ascii85Put(ctx, *cp++);
1230 for (cp = buf_data; byte_count > 0; byte_count--) {
1231 putc(hex[((*cp)>>4)&0xf], ctx->fd);
1232 putc(hex[(*cp)&0xf], ctx->fd);
1235 if (--breaklen <= 0) {
1236 putc('\n', ctx->fd);
1242 if ( !ctx->ascii85 ) {
1243 if ( ctx->level2 || ctx->level3 )
1244 putc( '>', ctx->fd );
1245 putc('\n', ctx->fd);
1247 #if !defined( EXP_ASCII85ENCODER )
1253 #if defined( EXP_ASCII85ENCODER )
1255 _TIFFfree( ascii85_p );
1257 _TIFFfree(buf_data);
1258 #ifdef ENABLE_BROKEN_BEGINENDDATA
1259 fputs("%%EndData\n", ctx->fd);
1265 PSpage(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1267 char *imageOp = "image";
1269 if ( ctx->useImagemask && (ctx->bitspersample == 1) )
1270 imageOp = "imagemask";
1272 if ((ctx->level2 || ctx->level3) && PS_Lvl2page(ctx, tif, w, h))
1274 ctx->ps_bytesperrow = ctx->tf_bytesperrow - (ctx->extrasamples * ctx->bitspersample / 8)*w;
1275 switch (ctx->photometric) {
1276 case PHOTOMETRIC_RGB:
1277 if (ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
1278 fprintf(ctx->fd, "%s", RGBcolorimage);
1279 PSColorContigPreamble(ctx, w, h, 3);
1280 PSDataColorContig(ctx, tif, w, h, 3);
1282 PSColorSeparatePreamble(ctx, w, h, 3);
1283 PSDataColorSeparate(ctx, tif, w, h, 3);
1286 case PHOTOMETRIC_SEPARATED:
1287 /* XXX should emit CMYKcolorimage */
1288 if (ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
1289 PSColorContigPreamble(ctx, w, h, 4);
1290 PSDataColorContig(ctx, tif, w, h, 4);
1292 PSColorSeparatePreamble(ctx, w, h, 4);
1293 PSDataColorSeparate(ctx, tif, w, h, 4);
1296 case PHOTOMETRIC_PALETTE:
1297 fprintf(ctx->fd, "%s", RGBcolorimage);
1298 PhotoshopBanner(ctx, w, h, 1, 3, "false 3 colorimage");
1299 fprintf(ctx->fd, "/scanLine %ld string def\n",
1300 (long) ctx->ps_bytesperrow * 3L);
1301 fprintf(ctx->fd, "%lu %lu 8\n",
1302 (unsigned long) w, (unsigned long) h);
1303 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1304 (unsigned long) w, (unsigned long) h,
1307 "{currentfile scanLine readhexstring pop} bind\n");
1308 fprintf(ctx->fd, "false 3 colorimage\n");
1309 PSDataPalette(ctx, tif, w, h);
1311 case PHOTOMETRIC_MINISBLACK:
1312 case PHOTOMETRIC_MINISWHITE:
1313 PhotoshopBanner(ctx, w, h, 1, 1, imageOp);
1314 fprintf(ctx->fd, "/scanLine %ld string def\n",
1315 (long) ctx->ps_bytesperrow);
1316 fprintf(ctx->fd, "%lu %lu %d\n",
1317 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1318 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1319 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1321 "{currentfile scanLine readhexstring pop} bind\n");
1322 fprintf(ctx->fd, "%s\n", imageOp);
1323 PSDataBW(ctx, tif, w, h);
1326 putc('\n', ctx->fd);
1330 PSColorContigPreamble(TIFF2PSContext* ctx, uint32 w, uint32 h, int nc)
1332 ctx->ps_bytesperrow = nc * (ctx->tf_bytesperrow / ctx->samplesperpixel);
1333 PhotoshopBanner(ctx, w, h, 1, nc, "false %d colorimage");
1334 fprintf(ctx->fd, "/line %ld string def\n", (long) ctx->ps_bytesperrow);
1335 fprintf(ctx->fd, "%lu %lu %d\n",
1336 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1337 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1338 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1339 fprintf(ctx->fd, "{currentfile line readhexstring pop} bind\n");
1340 fprintf(ctx->fd, "false %d colorimage\n", nc);
1344 PSColorSeparatePreamble(TIFF2PSContext* ctx, uint32 w, uint32 h, int nc)
1348 PhotoshopBanner(ctx, w, h, ctx->ps_bytesperrow, nc, "true %d colorimage");
1349 for (i = 0; i < nc; i++)
1350 fprintf(ctx->fd, "/line%d %ld string def\n",
1351 i, (long) ctx->ps_bytesperrow);
1352 fprintf(ctx->fd, "%lu %lu %d\n",
1353 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1354 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu] \n",
1355 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1356 for (i = 0; i < nc; i++)
1357 fprintf(ctx->fd, "{currentfile line%d readhexstring pop}bind\n", i);
1358 fprintf(ctx->fd, "true %d colorimage\n", nc);
1361 #define DOBREAK(len, howmany, fd) \
1362 if (((len) -= (howmany)) <= 0) { \
1364 (len) = MAXLINE-(howmany); \
1366 #define PUTHEX(c,fd) putc(hex[((c)>>4)&0xf],fd); putc(hex[(c)&0xf],fd)
1369 PSDataColorContig(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h, int nc)
1372 int breaklen = MAXLINE, cc, es = ctx->samplesperpixel - nc;
1373 unsigned char *tf_buf;
1374 unsigned char *cp, c;
1377 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1378 if (tf_buf == NULL) {
1379 TIFFError(ctx->filename, "No space for scanline buffer");
1382 for (row = 0; row < h; row++) {
1383 if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
1389 for (; cc < ctx->tf_bytesperrow; cc += ctx->samplesperpixel) {
1390 DOBREAK(breaklen, nc, ctx->fd);
1392 * For images with ctx->alpha, matte against
1393 * a white background; i.e.
1394 * Cback * (1 - Aimage)
1397 adjust = 255 - cp[nc];
1399 case 4: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1400 case 3: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1401 case 2: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1402 case 1: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1408 for (; cc < ctx->tf_bytesperrow; cc += ctx->samplesperpixel) {
1409 DOBREAK(breaklen, nc, ctx->fd);
1411 case 4: c = *cp++; PUTHEX(c,ctx->fd);
1412 case 3: c = *cp++; PUTHEX(c,ctx->fd);
1413 case 2: c = *cp++; PUTHEX(c,ctx->fd);
1414 case 1: c = *cp++; PUTHEX(c,ctx->fd);
1420 _TIFFfree((char *) tf_buf);
1424 PSDataColorSeparate(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h, int nc)
1427 int breaklen = MAXLINE, cc;
1429 unsigned char *tf_buf;
1430 unsigned char *cp, c;
1433 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1434 if (tf_buf == NULL) {
1435 TIFFError(ctx->filename, "No space for scanline buffer");
1438 maxs = (ctx->samplesperpixel > nc ? nc : ctx->samplesperpixel);
1439 for (row = 0; row < h; row++) {
1440 for (s = 0; s < maxs; s++) {
1441 if (TIFFReadScanline(tif, tf_buf, row, s) < 0)
1443 for (cp = tf_buf, cc = 0; cc < ctx->tf_bytesperrow; cc++) {
1444 DOBREAK(breaklen, 1, ctx->fd);
1450 _TIFFfree((char *) tf_buf);
1453 #define PUTRGBHEX(c,fd) \
1454 PUTHEX(rmap[c],fd); PUTHEX(gmap[c],fd); PUTHEX(bmap[c],fd)
1457 PSDataPalette(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1459 uint16 *rmap, *gmap, *bmap;
1461 int breaklen = MAXLINE, cc, nc;
1462 unsigned char *tf_buf;
1463 unsigned char *cp, c;
1466 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
1467 TIFFError(ctx->filename, "Palette image w/o \"Colormap\" tag");
1470 switch (ctx->bitspersample) {
1471 case 8: case 4: case 2: case 1:
1474 TIFFError(ctx->filename, "Depth %d not supported", ctx->bitspersample);
1477 nc = 3 * (8 / ctx->bitspersample);
1478 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1479 if (tf_buf == NULL) {
1480 TIFFError(ctx->filename, "No space for scanline buffer");
1483 if (checkcmap(ctx, tif, 1<<ctx->bitspersample, rmap, gmap, bmap) == 16) {
1485 #define CVT(x) ((unsigned short) (((x) * 255) / ((1U<<16)-1)))
1486 for (i = (1<<ctx->bitspersample)-1; i >= 0; i--) {
1487 rmap[i] = CVT(rmap[i]);
1488 gmap[i] = CVT(gmap[i]);
1489 bmap[i] = CVT(bmap[i]);
1493 for (row = 0; row < h; row++) {
1494 if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
1496 for (cp = tf_buf, cc = 0; cc < ctx->tf_bytesperrow; cc++) {
1497 DOBREAK(breaklen, nc, ctx->fd);
1498 switch (ctx->bitspersample) {
1500 c = *cp++; PUTRGBHEX(c, ctx->fd);
1503 c = *cp++; PUTRGBHEX(c&0xf, ctx->fd);
1504 c >>= 4; PUTRGBHEX(c, ctx->fd);
1507 c = *cp++; PUTRGBHEX(c&0x3, ctx->fd);
1508 c >>= 2; PUTRGBHEX(c&0x3, ctx->fd);
1509 c >>= 2; PUTRGBHEX(c&0x3, ctx->fd);
1510 c >>= 2; PUTRGBHEX(c, ctx->fd);
1513 c = *cp++; PUTRGBHEX(c&0x1, ctx->fd);
1514 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1515 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1516 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1517 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1518 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1519 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1520 c >>= 1; PUTRGBHEX(c, ctx->fd);
1525 _TIFFfree((char *) tf_buf);
1529 PSDataBW(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1531 int breaklen = MAXLINE;
1532 unsigned char* tf_buf;
1534 tsize_t stripsize = TIFFStripSize(tif);
1537 #if defined( EXP_ASCII85ENCODER )
1538 int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
1539 uint8 *ascii85_p = 0; /* Holds ASCII85 encoded data */
1543 tf_buf = (unsigned char *) _TIFFmalloc(stripsize);
1544 memset(tf_buf, 0, stripsize);
1545 if (tf_buf == NULL) {
1546 TIFFError(ctx->filename, "No space for scanline buffer");
1550 #if defined( EXP_ASCII85ENCODER )
1551 if ( ctx->ascii85 ) {
1553 * Allocate a buffer to hold the ASCII85 encoded data. Note
1554 * that it is allocated with sufficient room to hold the
1555 * encoded data (5*stripsize/4) plus the EOD marker (+8)
1556 * and formatting line breaks. The line breaks are more
1557 * than taken care of by using 6*stripsize/4 rather than
1561 ascii85_p = _TIFFmalloc( (stripsize+(stripsize/2)) + 8 );
1564 _TIFFfree( tf_buf );
1566 TIFFError( ctx->filename,
1567 "Cannot allocate ASCII85 encoding buffer." );
1576 for (s = 0; s < TIFFNumberOfStrips(tif); s++) {
1577 int cc = TIFFReadEncodedStrip(tif, s, tf_buf, stripsize);
1579 TIFFError(ctx->filename, "Can't read strip");
1583 if (ctx->photometric == PHOTOMETRIC_MINISWHITE) {
1584 for (cp += cc; --cp >= tf_buf;)
1589 #if defined( EXP_ASCII85ENCODER )
1592 for (i = 0; i < cc; i+=2) {
1593 adjust = 255 - cp[i + 1];
1594 cp[i / 2] = cp[i] + adjust;
1599 ascii85_l = Ascii85EncodeBlock(ctx, ascii85_p, 1, cp,
1602 if ( ascii85_l > 0 )
1603 fwrite( ascii85_p, ascii85_l, 1, ctx->fd );
1606 Ascii85Put(ctx, *cp++);
1607 #endif /* EXP_ASCII85_ENCODER */
1614 DOBREAK(breaklen, 1, ctx->fd);
1616 * For images with ctx->alpha, matte against
1617 * a white background; i.e.
1618 * Cback * (1 - Aimage)
1621 adjust = 255 - cp[1];
1622 c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1628 DOBREAK(breaklen, 1, ctx->fd);
1635 if ( !ctx->ascii85 )
1637 if ( ctx->level2 || ctx->level3)
1638 fputs(">\n", ctx->fd);
1640 #if !defined( EXP_ASCII85ENCODER )
1645 _TIFFfree( ascii85_p );
1652 Ascii85Init(TIFF2PSContext *ctx)
1654 ctx->ascii85breaklen = 2*MAXLINE;
1655 ctx->ascii85count = 0;
1659 Ascii85Encode(unsigned char* raw, char *buf)
1663 word = (((raw[0]<<8)+raw[1])<<16) + (raw[2]<<8) + raw[3];
1668 q = word / (85L*85*85*85); /* actually only a byte */
1669 buf[0] = (char) (q + '!');
1671 word -= q * (85L*85*85*85); q = word / (85L*85*85);
1672 buf[1] = (char) (q + '!');
1674 word -= q * (85L*85*85); q = word / (85*85);
1675 buf[2] = (char) (q + '!');
1677 w1 = (uint16) (word - q*(85L*85));
1678 buf[3] = (char) ((w1 / 85) + '!');
1679 buf[4] = (char) ((w1 % 85) + '!');
1682 buf[0] = 'z', buf[1] = '\0';
1686 Ascii85Put(TIFF2PSContext *ctx, unsigned char code)
1688 ctx->ascii85buf[ctx->ascii85count++] = code;
1689 if (ctx->ascii85count >= 4) {
1694 for (n = ctx->ascii85count, p = ctx->ascii85buf;
1695 n >= 4; n -= 4, p += 4) {
1697 Ascii85Encode(p, buf);
1698 for (cp = buf; *cp; cp++) {
1700 if (--ctx->ascii85breaklen == 0) {
1701 putc('\n', ctx->fd);
1702 ctx->ascii85breaklen = 2*MAXLINE;
1706 _TIFFmemcpy(ctx->ascii85buf, p, n);
1707 ctx->ascii85count = n;
1712 Ascii85Flush(TIFF2PSContext* ctx)
1714 if (ctx->ascii85count > 0) {
1716 _TIFFmemset(&ctx->ascii85buf[ctx->ascii85count], 0, 3);
1717 Ascii85Encode(ctx->ascii85buf, res);
1718 fwrite(res[0] == 'z' ? "!!!!" : res, ctx->ascii85count + 1, 1, ctx->fd);
1720 fputs("~>\n", ctx->fd);
1722 #if defined( EXP_ASCII85ENCODER)
1724 #define A85BREAKCNTR ctx->ascii85breaklen
1725 #define A85BREAKLEN (2*MAXLINE)
1727 /*****************************************************************************
1729 * Name: Ascii85EncodeBlock( ascii85_p, f_eod, raw_p, raw_l )
1731 * Description: This routine will encode the raw data in the buffer described
1732 * by raw_p and raw_l into ASCII85 format and store the encoding
1733 * in the buffer given by ascii85_p.
1735 * Parameters: ctx - TIFF2PS context
1736 * ascii85_p - A buffer supplied by the caller which will
1737 * contain the encoded ASCII85 data.
1738 * f_eod - Flag: Nz means to end the encoded buffer with
1739 * an End-Of-Data marker.
1740 * raw_p - Pointer to the buffer of data to be encoded
1741 * raw_l - Number of bytes in raw_p[] to be encoded
1743 * Returns: (int) < 0 Error, see errno
1744 * >= 0 Number of bytes written to ascii85_p[].
1746 * Notes: An external variable given by A85BREAKCNTR is used to
1747 * determine when to insert newline characters into the
1748 * encoded data. As each byte is placed into ascii85_p this
1749 * external is decremented. If the variable is decrement to
1750 * or past zero then a newline is inserted into ascii85_p
1751 * and the A85BREAKCNTR is then reset to A85BREAKLEN.
1752 * Note: for efficiency reasons the A85BREAKCNTR variable
1753 * is not actually checked on *every* character
1754 * placed into ascii85_p but often only for every
1757 * THE CALLER IS RESPONSIBLE FOR ENSURING THAT ASCII85_P[] IS
1758 * SUFFICIENTLY LARGE TO THE ENCODED DATA!
1759 * You will need at least 5 * (raw_l/4) bytes plus space for
1760 * newline characters and space for an EOD marker (if
1761 * requested). A safe calculation is to use 6*(raw_l/4) + 8
1762 * to size ascii85_p.
1764 *****************************************************************************/
1766 int Ascii85EncodeBlock( TIFF2PSContext *ctx, uint8 * ascii85_p,
1767 unsigned f_eod, const uint8 * raw_p, int raw_l )
1770 char ascii85[5]; /* Encoded 5 tuple */
1771 int ascii85_l; /* Number of bytes written to ascii85_p[] */
1772 int rc; /* Return code */
1773 uint32 val32; /* Unencoded 4 tuple */
1775 ascii85_l = 0; /* Nothing written yet */
1779 --raw_p; /* Prepare for pre-increment fetches */
1781 for ( ; raw_l > 3; raw_l -= 4 )
1783 val32 = *(++raw_p) << 24;
1784 val32 += *(++raw_p) << 16;
1785 val32 += *(++raw_p) << 8;
1786 val32 += *(++raw_p);
1788 if ( val32 == 0 ) /* Special case */
1790 ascii85_p[ascii85_l] = 'z';
1796 ascii85[4] = (char) ((val32 % 85) + 33);
1799 ascii85[3] = (char) ((val32 % 85) + 33);
1802 ascii85[2] = (char) ((val32 % 85) + 33);
1805 ascii85[1] = (char) ((val32 % 85) + 33);
1806 ascii85[0] = (char) ((val32 / 85) + 33);
1808 _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, sizeof(ascii85) );
1809 rc = sizeof(ascii85);
1814 if ( (A85BREAKCNTR -= rc) <= 0 )
1816 ascii85_p[ascii85_l] = '\n';
1818 A85BREAKCNTR = A85BREAKLEN;
1823 * Output any straggler bytes:
1828 int len; /* Output this many bytes */
1831 val32 = *++raw_p << 24; /* Prime the pump */
1833 if ( --raw_l > 0 ) val32 += *(++raw_p) << 16;
1834 if ( --raw_l > 0 ) val32 += *(++raw_p) << 8;
1838 ascii85[3] = (char) ((val32 % 85) + 33);
1841 ascii85[2] = (char) ((val32 % 85) + 33);
1844 ascii85[1] = (char) ((val32 % 85) + 33);
1845 ascii85[0] = (char) ((val32 / 85) + 33);
1847 _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, len );
1853 * If requested add an ASCII85 End Of Data marker:
1858 ascii85_p[ascii85_l++] = '~';
1859 ascii85_p[ascii85_l++] = '>';
1860 ascii85_p[ascii85_l++] = '\n';
1863 return ( ascii85_l );
1865 } /* Ascii85EncodeBlock() */
1867 #endif /* EXP_ASCII85ENCODER */
1869 /* vim: set ts=8 sts=8 sw=8 noet: */