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");
176 if (ctx->fd == NULL) {
177 g_free (ctx->filename);
181 ctx->interpolate = TRUE; /* interpolate level2 image */
182 ctx->PSavoiddeadzone = TRUE; /* enable avoiding printer deadzone */
186 void tiff2ps_context_finalize(TIFF2PSContext *ctx) {
189 g_free(ctx->filename);
194 checkImage(TIFF2PSContext *ctx, TIFF* tif)
196 switch (ctx->photometric) {
197 case PHOTOMETRIC_YCBCR:
198 if ((ctx->compression == COMPRESSION_JPEG
199 || ctx->compression == COMPRESSION_OJPEG)
200 && ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
201 /* can rely on libjpeg to convert to RGB */
202 TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE,
204 ctx->photometric = PHOTOMETRIC_RGB;
206 if (ctx->level2 || ctx->level3)
208 TIFFError(ctx->filename, "Can not handle image with %s",
209 "Ctx->PhotometricInterpretation=YCbCr");
213 case PHOTOMETRIC_RGB:
214 if (ctx->alpha && ctx->bitspersample != 8) {
215 TIFFError(ctx->filename,
216 "Can not handle %d-bit/sample RGB image with ctx->alpha",
221 case PHOTOMETRIC_SEPARATED:
222 case PHOTOMETRIC_PALETTE:
223 case PHOTOMETRIC_MINISBLACK:
224 case PHOTOMETRIC_MINISWHITE:
226 case PHOTOMETRIC_LOGL:
227 case PHOTOMETRIC_LOGLUV:
228 if (ctx->compression != COMPRESSION_SGILOG &&
229 ctx->compression != COMPRESSION_SGILOG24) {
230 TIFFError(ctx->filename,
231 "Can not handle %s data with ctx->compression other than SGILog",
232 (ctx->photometric == PHOTOMETRIC_LOGL) ?
237 /* rely on library to convert to RGB/greyscale */
238 TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
239 ctx->photometric = (ctx->photometric == PHOTOMETRIC_LOGL) ?
240 PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB;
241 ctx->bitspersample = 8;
243 case PHOTOMETRIC_CIELAB:
246 TIFFError(ctx->filename,
247 "Can not handle image with Ctx->PhotometricInterpretation=%d",
251 switch (ctx->bitspersample) {
256 TIFFError(ctx->filename, "Can not handle %d-bit/sample image",
260 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
261 ctx->extrasamples > 0)
262 TIFFWarning(ctx->filename, "Ignoring extra samples");
266 #define PS_UNIT_SIZE 72.0F
267 #define PSUNITS(npix,res) ((npix) * (PS_UNIT_SIZE / (res)))
269 static char RGBcolorimage[] = "\
272 dup length 3 idiv string 0 3 0\n\
274 add 2 1 roll 1 sub dup 0 eq {\n\
281 } { 2 1 roll } ifelse\n\
285 /colorimage where {pop} {\n\
286 /colorimage {pop pop /rgbproc exch def {bwproc} image} bind def\n\
291 * Adobe Photoshop requires a comment line of the form:
293 * %ImageData: <cols> <rows> <depth> <main channels> <pad channels>
294 * <block size> <1 for binary|2 for hex> "data start"
296 * It is claimed to be part of some future revision of the EPS spec.
299 PhotoshopBanner(TIFF2PSContext* ctx, uint32 w, uint32 h, int bs, int nc,
302 fprintf(ctx->fd, "%%ImageData: %ld %ld %d %d 0 %d 2 \"",
303 (long) w, (long) h, ctx->bitspersample, nc, bs);
304 fprintf(ctx->fd, startline, nc);
305 fprintf(ctx->fd, "\"\n");
309 * pw : image width in pixels
310 * ph : image height in pixels
311 * pprw : image width in PS units (72 dpi)
312 * pprh : image height in PS units (72 dpi)
315 setupPageState(TIFF2PSContext *ctx, TIFF* tif, uint32* pw, uint32* ph,
316 double* pprw, double* pprh)
318 float xres = 0.0F, yres = 0.0F;
320 TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, pw);
321 TIFFGetField(tif, TIFFTAG_IMAGELENGTH, ph);
322 if (ctx->res_unit == 0)
323 TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &ctx->res_unit);
325 * Calculate printable area.
327 if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres)
328 || fabs(xres) < 0.0000001)
330 if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres)
331 || fabs(yres) < 0.0000001)
333 switch (ctx->res_unit) {
334 case RESUNIT_CENTIMETER:
335 xres *= 2.54F, yres *= 2.54F;
341 xres *= PS_UNIT_SIZE, yres *= PS_UNIT_SIZE;
344 *pprh = PSUNITS(*ph, yres);
345 *pprw = PSUNITS(*pw, xres);
349 isCCITTCompression(TIFF* tif)
352 TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
353 return (compress == COMPRESSION_CCITTFAX3 ||
354 compress == COMPRESSION_CCITTFAX4 ||
355 compress == COMPRESSION_CCITTRLE ||
356 compress == COMPRESSION_CCITTRLEW);
359 static char *hex = "0123456789abcdef";
362 * imagewidth & imageheight are 1/72 inches
363 * pagewidth & pageheight are inches
366 PlaceImage(TIFF2PSContext *ctx, double pagewidth, double pageheight,
367 double imagewidth, double imageheight, int splitpage,
368 double lm, double bm, int cnt)
374 double left_offset = lm * PS_UNIT_SIZE;
375 double bottom_offset = bm * PS_UNIT_SIZE;
376 double subimageheight;
379 /* buffers for locale-insitive number formatting */
380 gchar buf[2][G_ASCII_DTOSTR_BUF_SIZE];
382 pagewidth *= PS_UNIT_SIZE;
383 pageheight *= PS_UNIT_SIZE;
385 if (ctx->maxPageHeight==0)
388 splitheight = ctx->maxPageHeight * PS_UNIT_SIZE;
389 overlap = ctx->splitOverlap * PS_UNIT_SIZE;
393 * if too wide, scrunch to fit
394 * else leave it alone
396 if (imagewidth <= pagewidth) {
403 * if too long, scrunch to fit
404 * if too short, move to top of page
406 if (imageheight <= pageheight) {
407 yscale = imageheight;
408 ytran = pageheight - imageheight;
409 } else if (imageheight > pageheight &&
410 (splitheight == 0 || imageheight <= splitheight)) {
412 } else /* imageheight > splitheight */ {
413 subimageheight = imageheight - (pageheight-overlap)*splitpage;
414 if (subimageheight <= pageheight) {
415 yscale = imageheight;
416 ytran = pageheight - subimageheight;
418 } else if ( subimageheight > pageheight && subimageheight <= splitheight) {
419 yscale = imageheight * pageheight / subimageheight;
422 } else /* sumimageheight > splitheight */ {
423 yscale = imageheight;
424 ytran = pageheight - subimageheight;
429 bottom_offset += ytran / (cnt?2:1);
431 left_offset += xtran / 2;
433 fprintf(ctx->fd, "%s %s translate\n",
434 g_ascii_dtostr(buf[0], sizeof(buf[0]), left_offset),
435 g_ascii_dtostr(buf[1], sizeof(buf[1]), bottom_offset));
436 fprintf(ctx->fd, "%s %s scale\n",
437 g_ascii_dtostr(buf[0], sizeof(buf[0]), xscale),
438 g_ascii_dtostr(buf[1], sizeof(buf[1]), yscale));
440 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
447 tiff2ps_process_page(TIFF2PSContext* ctx, TIFF* tif, double pw, double ph,
448 double lm, double bm, gboolean cnt)
454 double left_offset = lm * PS_UNIT_SIZE;
455 double bottom_offset = bm * PS_UNIT_SIZE;
458 /* buffers for locale-insitive number formatting */
459 gchar buf[2][G_ASCII_DTOSTR_BUF_SIZE];
461 if (!TIFFGetField(tif, TIFFTAG_XPOSITION, &ox))
463 if (!TIFFGetField(tif, TIFFTAG_YPOSITION, &oy))
465 setupPageState(ctx, tif, &w, &h, &prw, &prh);
467 ctx->tf_numberstrips = TIFFNumberOfStrips(tif);
468 TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP,
469 &ctx->tf_rowsperstrip);
470 setupPageState(ctx, tif, &w, &h, &prw, &prh);
472 PSHead(ctx, tif, w, h, prw, prh, ox, oy);
473 TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE,
474 &ctx->bitspersample);
475 TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL,
476 &ctx->samplesperpixel);
477 TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG,
478 &ctx->planarconfiguration);
479 TIFFGetField(tif, TIFFTAG_COMPRESSION, &ctx->compression);
480 TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
481 &ctx->extrasamples, &sampleinfo);
482 ctx->alpha = (ctx->extrasamples == 1 &&
483 sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
484 if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &ctx->photometric)) {
485 switch (ctx->samplesperpixel - ctx->extrasamples) {
487 if (isCCITTCompression(tif))
488 ctx->photometric = PHOTOMETRIC_MINISWHITE;
490 ctx->photometric = PHOTOMETRIC_MINISBLACK;
493 ctx->photometric = PHOTOMETRIC_RGB;
496 ctx->photometric = PHOTOMETRIC_SEPARATED;
500 if (checkImage(ctx, tif)) {
501 ctx->tf_bytesperrow = TIFFScanlineSize(tif);
503 fprintf(ctx->fd, "%%%%Page: %d %d\n", ctx->npages,
505 if (!ctx->generateEPSF && ( ctx->level2 || ctx->level3 )) {
506 double psw = 0.0, psh = 0.0;
508 psw = pw * PS_UNIT_SIZE;
509 if (ctx->res_unit == RESUNIT_CENTIMETER)
512 psw=ctx->rotate ? prh:prw;
514 psh = ph * PS_UNIT_SIZE;
515 if (ctx->res_unit == RESUNIT_CENTIMETER)
518 psh=ctx->rotate ? prw:prh;
520 "1 dict begin /PageSize [ %s %s ] def currentdict end setpagedevice\n",
521 g_ascii_dtostr(buf[0], sizeof(buf[0]), psw),
522 g_ascii_dtostr(buf[1], sizeof(buf[1]), psh));
524 "<<\n /Policies <<\n /PageSize 3\n >>\n>> setpagedevice\n",
527 fprintf(ctx->fd, "gsave\n");
528 fprintf(ctx->fd, "100 dict begin\n");
529 if (pw != 0 || ph != 0) {
534 if (ctx->maxPageHeight) { /* used -H option */
535 split = PlaceImage(ctx,pw,ph,prw,prh,
538 PSpage(ctx, tif, w, h);
539 fprintf(ctx->fd, "end\n");
540 fprintf(ctx->fd, "grestore\n");
541 fprintf(ctx->fd, "showpage\n");
543 fprintf(ctx->fd, "%%%%Page: %d %d\n",
544 ctx->npages, ctx->npages);
545 fprintf(ctx->fd, "gsave\n");
546 fprintf(ctx->fd, "100 dict begin\n");
547 split = PlaceImage(ctx,pw,ph,prw,prh,
554 /* NB: maintain image aspect ratio */
555 scale = pw/prw < ph/prh ?
561 (ph - prh * scale) / 2;
563 (pw - prw * scale) / 2;
565 fprintf(ctx->fd, "%s %s translate\n",
566 g_ascii_dtostr(buf[0], sizeof(buf[0]), left_offset),
567 g_ascii_dtostr(buf[1], sizeof(buf[1]), bottom_offset));
568 fprintf(ctx->fd, "%s %s scale\n",
569 g_ascii_dtostr(buf[0], sizeof(buf[0]), prw * scale),
570 g_ascii_dtostr(buf[1], sizeof(buf[1]), prh * scale));
572 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
575 fprintf(ctx->fd, "%s %s scale\n",
576 g_ascii_dtostr(buf[0], sizeof(buf[0]), prw),
577 g_ascii_dtostr(buf[1], sizeof(buf[1]), prh));
579 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
581 PSpage(ctx, tif, w, h);
582 fprintf(ctx->fd, "end\n");
583 fprintf(ctx->fd, "grestore\n");
584 fprintf(ctx->fd, "showpage\n");
589 static char DuplexPreamble[] = "\
590 %%BeginFeature: *Duplex True\n\
592 /languagelevel where { pop languagelevel } { 1 } ifelse\n\
593 2 ge { 1 dict dup /Duplex true put setpagedevice }\n\
594 { statusdict /setduplex known { statusdict begin setduplex true end } if\n\
600 static char TumblePreamble[] = "\
601 %%BeginFeature: *Tumble True\n\
603 /languagelevel where { pop languagelevel } { 1 } ifelse\n\
604 2 ge { 1 dict dup /Tumble true put setpagedevice }\n\
605 { statusdict /settumble known { statusdict begin true settumble end } if\n\
611 static char AvoidDeadZonePreamble[] = "\
612 gsave newpath clippath pathbbox grestore\n\
613 4 2 roll 2 copy translate\n\
614 exch 3 1 roll sub 3 1 roll sub exch\n\
615 currentpagedevice /PageSize get aload pop\n\
616 exch 3 1 roll div 3 1 roll div abs exch abs\n\
617 2 copy gt { exch } if pop\n\
618 dup 1 lt { dup scale } { pop } ifelse\n\
622 PSHead(TIFF2PSContext *ctx, TIFF *tif, uint32 w, uint32 h,
623 double pw, double ph, double ox, double oy)
627 (void) tif; (void) w; (void) h;
629 fprintf(ctx->fd, "%%!PS-Adobe-3.0%s\n",
630 ctx->generateEPSF ? " EPSF-3.0" : "");
631 fprintf(ctx->fd, "%%%%Creator: Evince\n");
632 fprintf(ctx->fd, "%%%%CreationDate: %s", ctime(&t));
633 fprintf(ctx->fd, "%%%%DocumentData: Clean7Bit\n");
634 fprintf(ctx->fd, "%%%%Origin: %ld %ld\n", (long) ox, (long) oy);
635 /* NB: should use PageBoundingBox */
636 fprintf(ctx->fd, "%%%%BoundingBox: 0 0 %ld %ld\n",
637 (long) ceil(pw), (long) ceil(ph));
638 fprintf(ctx->fd, "%%%%LanguageLevel: %d\n",
639 (ctx->level3 ? 3 : (ctx->level2 ? 2 : 1)));
640 fprintf(ctx->fd, "%%%%Pages: (atend)\n");
641 fprintf(ctx->fd, "%%%%EndComments\n");
642 fprintf(ctx->fd, "%%%%BeginSetup\n");
644 fprintf(ctx->fd, "%s", DuplexPreamble);
646 fprintf(ctx->fd, "%s", TumblePreamble);
647 if (ctx->PSavoiddeadzone && (ctx->level2 || ctx->level3))
648 fprintf(ctx->fd, "%s", AvoidDeadZonePreamble);
649 fprintf(ctx->fd, "%%%%EndSetup\n");
653 PSTail(TIFF2PSContext *ctx)
657 fprintf(ctx->fd, "%%%%Trailer\n");
658 fprintf(ctx->fd, "%%%%Pages: %d\n", ctx->npages);
659 fprintf(ctx->fd, "%%%%EOF\n");
663 checkcmap(TIFF2PSContext* ctx, TIFF* tif, int n,
664 uint16* r, uint16* g, uint16* b)
668 if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
670 TIFFWarning(ctx->filename, "Assuming 8-bit colormap");
675 PS_Lvl2colorspace(TIFF2PSContext* ctx, TIFF* tif)
677 uint16 *rmap, *gmap, *bmap;
679 const char * colorspace_p;
681 switch ( ctx->photometric )
683 case PHOTOMETRIC_SEPARATED:
684 colorspace_p = "CMYK";
687 case PHOTOMETRIC_RGB:
688 colorspace_p = "RGB";
692 colorspace_p = "Gray";
696 * Set up PostScript Level 2 colorspace according to
697 * section 4.8 in the PostScript refenence manual.
699 fputs("% PostScript Level 2 only.\n", ctx->fd);
700 if (ctx->photometric != PHOTOMETRIC_PALETTE) {
701 if (ctx->photometric == PHOTOMETRIC_YCBCR) {
704 fprintf(ctx->fd, "/Device%s setcolorspace\n", colorspace_p );
709 * Set up an indexed/palette colorspace
711 num_colors = (1 << ctx->bitspersample);
712 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
713 TIFFError(ctx->filename,
714 "Palette image w/o \"Colormap\" tag");
717 if (checkcmap(ctx, tif, num_colors, rmap, gmap, bmap) == 16) {
719 * Convert colormap to 8-bits values.
721 #define CVT(x) (((x) * 255) / ((1L<<16)-1))
722 for (i = 0; i < num_colors; i++) {
723 rmap[i] = CVT(rmap[i]);
724 gmap[i] = CVT(gmap[i]);
725 bmap[i] = CVT(bmap[i]);
729 fprintf(ctx->fd, "[ /Indexed /DeviceRGB %d", num_colors - 1);
732 fputs("\n<~", ctx->fd);
733 ctx->ascii85breaklen -= 2;
735 fputs(" <", ctx->fd);
736 for (i = 0; i < num_colors; i++) {
738 Ascii85Put(ctx, (unsigned char)rmap[i]);
739 Ascii85Put(ctx, (unsigned char)gmap[i]);
740 Ascii85Put(ctx, (unsigned char)bmap[i]);
742 fputs((i % 8) ? " " : "\n ", ctx->fd);
743 fprintf(ctx->fd, "%02x%02x%02x",
744 rmap[i], gmap[i], bmap[i]);
750 fputs(">\n", ctx->fd);
751 fputs("] setcolorspace\n", ctx->fd);
755 PS_Lvl2ImageDict(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
758 uint32 tile_width, tile_height;
759 uint16 predictor, minsamplevalue, maxsamplevalue;
761 char im_h[64], im_x[64], im_y[64];
762 char * imageOp = "image";
764 if ( ctx->useImagemask && (ctx->bitspersample == 1) )
765 imageOp = "imagemask";
767 (void)strcpy(im_x, "0");
768 (void)sprintf(im_y, "%lu", (long) h);
769 (void)sprintf(im_h, "%lu", (long) h);
772 if (TIFFIsTiled(tif)) {
773 repeat_count = TIFFNumberOfTiles(tif);
774 TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width);
775 TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height);
776 if (tile_width > w || tile_height > h ||
777 (w % tile_width) != 0 || (h % tile_height != 0)) {
779 * The tiles does not fit image width and height.
780 * Set up a clip rectangle for the image unit square.
782 fputs("0 0 1 1 rectclip\n", ctx->fd);
784 if (tile_width < w) {
785 fputs("/im_x 0 def\n", ctx->fd);
786 (void)strcpy(im_x, "im_x neg");
788 if (tile_height < h) {
789 fputs("/im_y 0 def\n", ctx->fd);
790 (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
793 repeat_count = ctx->tf_numberstrips;
794 tile_height = ctx->tf_rowsperstrip;
797 if (repeat_count > 1) {
798 fputs("/im_y 0 def\n", ctx->fd);
799 fprintf(ctx->fd, "/im_h %lu def\n",
800 (unsigned long) tile_height);
801 (void)strcpy(im_h, "im_h");
802 (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
807 * Output start of exec block
809 fputs("{ % exec\n", ctx->fd);
811 if (repeat_count > 1)
812 fprintf(ctx->fd, "%d { %% repeat\n", repeat_count);
815 * Output filter options and image dictionary.
818 fputs(" /im_stream currentfile /ASCII85Decode filter def\n",
820 fputs(" <<\n", ctx->fd);
821 fputs(" /ImageType 1\n", ctx->fd);
822 fprintf(ctx->fd, " /Width %lu\n", (unsigned long) tile_width);
824 * Workaround for some software that may crash when last strip
825 * of image contains fewer number of scanlines than specified
826 * by the `/Height' variable. So for stripped images with multiple
827 * strips we will set `/Height' as `im_h', because one is
828 * recalculated for each strip - including the (smaller) final strip.
829 * For tiled images and images with only one strip `/Height' will
830 * contain number of scanlines in tile (or image height in case of
831 * one-stripped image).
833 if (TIFFIsTiled(tif) || ctx->tf_numberstrips == 1)
834 fprintf(ctx->fd, " /Height %lu\n", (unsigned long) tile_height);
836 fprintf(ctx->fd, " /Height im_h\n");
838 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE && ctx->samplesperpixel > 1)
839 fputs(" /MultipleDataSources true\n", ctx->fd);
840 fprintf(ctx->fd, " /ImageMatrix [ %lu 0 0 %ld %s %s ]\n",
841 (unsigned long) w, - (long)h, im_x, im_y);
842 fprintf(ctx->fd, " /BitsPerComponent %d\n", ctx->bitspersample);
843 fprintf(ctx->fd, " /Ctx->Interpolate %s\n", ctx->interpolate ? "true" : "false");
845 switch (ctx->samplesperpixel - ctx->extrasamples) {
847 switch (ctx->photometric) {
848 case PHOTOMETRIC_MINISBLACK:
849 fputs(" /Decode [0 1]\n", ctx->fd);
851 case PHOTOMETRIC_MINISWHITE:
852 switch (ctx->compression) {
853 case COMPRESSION_CCITTRLE:
854 case COMPRESSION_CCITTRLEW:
855 case COMPRESSION_CCITTFAX3:
856 case COMPRESSION_CCITTFAX4:
858 * Manage inverting with /Blackis1 flag
859 * since there migth be uncompressed parts
861 fputs(" /Decode [0 1]\n", ctx->fd);
867 fputs(" /Decode [1 0]\n", ctx->fd);
871 case PHOTOMETRIC_PALETTE:
872 TIFFGetFieldDefaulted(tif, TIFFTAG_MINSAMPLEVALUE,
874 TIFFGetFieldDefaulted(tif, TIFFTAG_MAXSAMPLEVALUE,
876 fprintf(ctx->fd, " /Decode [%u %u]\n",
877 minsamplevalue, maxsamplevalue);
883 fputs(" /Decode [0 1]\n", ctx->fd);
888 switch (ctx->photometric) {
889 case PHOTOMETRIC_RGB:
890 fputs(" /Decode [0 1 0 1 0 1]\n", ctx->fd);
892 case PHOTOMETRIC_MINISWHITE:
893 case PHOTOMETRIC_MINISBLACK:
898 fputs(" /Decode [0 1 0 1 0 1]\n", ctx->fd);
906 fputs(" /Decode [0 1 0 1 0 1 0 1]\n", ctx->fd);
909 fputs(" /DataSource", ctx->fd);
910 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
911 ctx->samplesperpixel > 1)
912 fputs(" [", ctx->fd);
914 fputs(" im_stream", ctx->fd);
916 fputs(" currentfile /ASCIIHexDecode filter", ctx->fd);
919 switch (ctx->compression) {
920 case COMPRESSION_NONE: /* 1: uncompressed */
922 case COMPRESSION_CCITTRLE: /* 2: CCITT modified Huffman RLE */
923 case COMPRESSION_CCITTRLEW: /* 32771: #1 w/ word alignment */
924 case COMPRESSION_CCITTFAX3: /* 3: CCITT Group 3 fax encoding */
925 case COMPRESSION_CCITTFAX4: /* 4: CCITT Group 4 fax encoding */
926 fputs("\n\t<<\n", ctx->fd);
927 if (ctx->compression == COMPRESSION_CCITTFAX3) {
930 fputs("\t /EndOfLine true\n", ctx->fd);
931 fputs("\t /EndOfBlock false\n", ctx->fd);
932 if (!TIFFGetField(tif, TIFFTAG_GROUP3OPTIONS,
935 if (g3_options & GROUP3OPT_2DENCODING)
936 fprintf(ctx->fd, "\t /K %s\n", im_h);
937 if (g3_options & GROUP3OPT_UNCOMPRESSED)
938 fputs("\t /Uncompressed true\n", ctx->fd);
939 if (g3_options & GROUP3OPT_FILLBITS)
940 fputs("\t /EncodedByteAlign true\n", ctx->fd);
942 if (ctx->compression == COMPRESSION_CCITTFAX4) {
945 fputs("\t /K -1\n", ctx->fd);
946 TIFFGetFieldDefaulted(tif, TIFFTAG_GROUP4OPTIONS,
948 if (g4_options & GROUP4OPT_UNCOMPRESSED)
949 fputs("\t /Uncompressed true\n", ctx->fd);
951 if (!(tile_width == w && w == 1728U))
952 fprintf(ctx->fd, "\t /Columns %lu\n",
953 (unsigned long) tile_width);
954 fprintf(ctx->fd, "\t /Rows %s\n", im_h);
955 if (ctx->compression == COMPRESSION_CCITTRLE ||
956 ctx->compression == COMPRESSION_CCITTRLEW) {
957 fputs("\t /EncodedByteAlign true\n", ctx->fd);
958 fputs("\t /EndOfBlock false\n", ctx->fd);
960 if (ctx->photometric == PHOTOMETRIC_MINISBLACK)
961 fputs("\t /BlackIs1 true\n", ctx->fd);
962 fprintf(ctx->fd, "\t>> /CCITTFaxDecode filter");
964 case COMPRESSION_LZW: /* 5: Lempel-Ziv & Welch */
965 TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
966 if (predictor == 2) {
967 fputs("\n\t<<\n", ctx->fd);
968 fprintf(ctx->fd, "\t /Predictor %u\n", predictor);
969 fprintf(ctx->fd, "\t /Columns %lu\n",
970 (unsigned long) tile_width);
971 fprintf(ctx->fd, "\t /Colors %u\n", ctx->samplesperpixel);
972 fprintf(ctx->fd, "\t /BitsPerComponent %u\n",
974 fputs("\t>>", ctx->fd);
976 fputs(" /LZWDecode filter", ctx->fd);
978 case COMPRESSION_DEFLATE: /* 5: ZIP */
979 case COMPRESSION_ADOBE_DEFLATE:
981 TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
983 fprintf(ctx->fd, "\t %% PostScript Level 3 only.");
984 fputs("\n\t<<\n", ctx->fd);
985 fprintf(ctx->fd, "\t /Predictor %u\n", predictor);
986 fprintf(ctx->fd, "\t /Columns %lu\n",
987 (unsigned long) tile_width);
988 fprintf(ctx->fd, "\t /Colors %u\n", ctx->samplesperpixel);
989 fprintf(ctx->fd, "\t /BitsPerComponent %u\n",
991 fputs("\t>>", ctx->fd);
993 fputs(" /FlateDecode filter", ctx->fd);
995 use_rawdata = FALSE ;
998 case COMPRESSION_PACKBITS: /* 32773: Macintosh RLE */
999 fputs(" /RunLengthDecode filter", ctx->fd);
1002 case COMPRESSION_OJPEG: /* 6: !6.0 JPEG */
1003 case COMPRESSION_JPEG: /* 7: %JPEG DCT ctx->compression */
1006 * Code not tested yet
1008 fputs(" /DCTDecode filter", ctx->fd);
1011 use_rawdata = FALSE;
1014 case COMPRESSION_NEXT: /* 32766: NeXT 2-bit RLE */
1015 case COMPRESSION_THUNDERSCAN: /* 32809: ThunderScan RLE */
1016 case COMPRESSION_PIXARFILM: /* 32908: Pixar companded 10bit LZW */
1017 case COMPRESSION_JBIG: /* 34661: ISO JBIG */
1018 use_rawdata = FALSE;
1020 case COMPRESSION_SGILOG: /* 34676: SGI LogL or LogLuv */
1021 case COMPRESSION_SGILOG24: /* 34677: SGI 24-bit LogLuv */
1022 use_rawdata = FALSE;
1028 use_rawdata = FALSE;
1031 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
1032 ctx->samplesperpixel > 1) {
1036 * NOTE: This code does not work yet...
1038 for (i = 1; i < ctx->samplesperpixel; i++)
1039 fputs(" dup", ctx->fd);
1040 fputs(" ]", ctx->fd);
1043 fprintf( ctx->fd, "\n >> %s\n", imageOp );
1045 fputs(" im_stream status { im_stream flushfile } if\n", ctx->fd);
1046 if (repeat_count > 1) {
1047 if (tile_width < w) {
1048 fprintf(ctx->fd, " /im_x im_x %lu add def\n",
1049 (unsigned long) tile_width);
1050 if (tile_height < h) {
1051 fprintf(ctx->fd, " im_x %lu ge {\n",
1053 fputs(" /im_x 0 def\n", ctx->fd);
1054 fprintf(ctx->fd, " /im_y im_y %lu add def\n",
1055 (unsigned long) tile_height);
1056 fputs(" } if\n", ctx->fd);
1059 if (tile_height < h) {
1060 if (tile_width >= w) {
1061 fprintf(ctx->fd, " /im_y im_y %lu add def\n",
1062 (unsigned long) tile_height);
1063 if (!TIFFIsTiled(tif)) {
1064 fprintf(ctx->fd, " /im_h %lu im_y sub",
1066 fprintf(ctx->fd, " dup %lu gt { pop",
1067 (unsigned long) tile_height);
1068 fprintf(ctx->fd, " %lu } if def\n",
1069 (unsigned long) tile_height);
1073 fputs("} repeat\n", ctx->fd);
1076 * End of exec function
1078 fputs("}\n", ctx->fd);
1080 return(use_rawdata);
1086 PS_Lvl2page(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1089 int use_rawdata, tiled_image, breaklen = MAXLINE;
1090 uint32 chunk_no, num_chunks, *bc;
1091 unsigned char *buf_data, *cp;
1092 tsize_t chunk_size, byte_count;
1094 #if defined( EXP_ASCII85ENCODER )
1095 int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
1096 uint8 * ascii85_p = 0; /* Holds ASCII85 encoded data */
1099 PS_Lvl2colorspace(ctx, tif);
1100 use_rawdata = PS_Lvl2ImageDict(ctx, tif, w, h);
1102 /* See http://bugzilla.remotesensing.org/show_bug.cgi?id=80 */
1103 #ifdef ENABLE_BROKEN_BEGINENDDATA
1104 fputs("%%BeginData:\n", ctx->fd);
1106 fputs("exec\n", ctx->fd);
1108 tiled_image = TIFFIsTiled(tif);
1110 num_chunks = TIFFNumberOfTiles(tif);
1111 TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc);
1113 num_chunks = TIFFNumberOfStrips(tif);
1114 TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
1118 chunk_size = (tsize_t) bc[0];
1119 for (chunk_no = 1; chunk_no < num_chunks; chunk_no++)
1120 if ((tsize_t) bc[chunk_no] > chunk_size)
1121 chunk_size = (tsize_t) bc[chunk_no];
1124 chunk_size = TIFFTileSize(tif);
1126 chunk_size = TIFFStripSize(tif);
1128 buf_data = (unsigned char *)_TIFFmalloc(chunk_size);
1130 TIFFError(ctx->filename, "Can't alloc %u bytes for %s.",
1131 chunk_size, tiled_image ? "tiles" : "strips");
1135 #if defined( EXP_ASCII85ENCODER )
1136 if ( ctx->ascii85 ) {
1138 * Allocate a buffer to hold the ASCII85 encoded data. Note
1139 * that it is allocated with sufficient room to hold the
1140 * encoded data (5*chunk_size/4) plus the EOD marker (+8)
1141 * and formatting line breaks. The line breaks are more
1142 * than taken care of by using 6*chunk_size/4 rather than
1146 ascii85_p = _TIFFmalloc( (chunk_size+(chunk_size/2)) + 8 );
1149 _TIFFfree( buf_data );
1151 TIFFError( ctx->filename,
1152 "Cannot allocate ASCII85 encoding buffer." );
1158 TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
1159 for (chunk_no = 0; chunk_no < num_chunks; chunk_no++) {
1166 byte_count = TIFFReadRawTile(tif, chunk_no,
1167 buf_data, chunk_size);
1169 byte_count = TIFFReadRawStrip(tif, chunk_no,
1170 buf_data, chunk_size);
1171 if (fillorder == FILLORDER_LSB2MSB)
1172 TIFFReverseBits(buf_data, byte_count);
1175 byte_count = TIFFReadEncodedTile(tif,
1179 byte_count = TIFFReadEncodedStrip(tif,
1183 if (byte_count < 0) {
1184 TIFFError(ctx->filename, "Can't read %s %d.",
1185 tiled_image ? "tile" : "strip", chunk_no);
1187 Ascii85Put(ctx, '\0');
1190 * For images with ctx->alpha, matte against a white background;
1191 * i.e. Cback * (1 - Aimage) where Cback = 1. We will fill the
1192 * lower part of the buffer with the modified values.
1194 * XXX: needs better solution
1197 int adjust, i, j = 0;
1198 int ncomps = ctx->samplesperpixel - ctx->extrasamples;
1199 for (i = 0; i < byte_count; i+=ctx->samplesperpixel) {
1200 adjust = 255 - buf_data[i + ncomps];
1203 buf_data[j++] = buf_data[i] + adjust;
1206 buf_data[j++] = buf_data[i] + adjust;
1207 buf_data[j++] = buf_data[i+1] + adjust;
1210 buf_data[j++] = buf_data[i] + adjust;
1211 buf_data[j++] = buf_data[i+1] + adjust;
1212 buf_data[j++] = buf_data[i+2] + adjust;
1220 #if defined( EXP_ASCII85ENCODER )
1221 ascii85_l = Ascii85EncodeBlock(ctx, ascii85_p, 1,
1222 buf_data, byte_count);
1224 if ( ascii85_l > 0 )
1225 fwrite( ascii85_p, ascii85_l, 1, ctx->fd );
1227 for (cp = buf_data; byte_count > 0; byte_count--)
1228 Ascii85Put(ctx, *cp++);
1233 for (cp = buf_data; byte_count > 0; byte_count--) {
1234 putc(hex[((*cp)>>4)&0xf], ctx->fd);
1235 putc(hex[(*cp)&0xf], ctx->fd);
1238 if (--breaklen <= 0) {
1239 putc('\n', ctx->fd);
1245 if ( !ctx->ascii85 ) {
1246 if ( ctx->level2 || ctx->level3 )
1247 putc( '>', ctx->fd );
1248 putc('\n', ctx->fd);
1250 #if !defined( EXP_ASCII85ENCODER )
1256 #if defined( EXP_ASCII85ENCODER )
1258 _TIFFfree( ascii85_p );
1260 _TIFFfree(buf_data);
1261 #ifdef ENABLE_BROKEN_BEGINENDDATA
1262 fputs("%%EndData\n", ctx->fd);
1268 PSpage(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1270 char *imageOp = "image";
1272 if ( ctx->useImagemask && (ctx->bitspersample == 1) )
1273 imageOp = "imagemask";
1275 if ((ctx->level2 || ctx->level3) && PS_Lvl2page(ctx, tif, w, h))
1277 ctx->ps_bytesperrow = ctx->tf_bytesperrow - (ctx->extrasamples * ctx->bitspersample / 8)*w;
1278 switch (ctx->photometric) {
1279 case PHOTOMETRIC_RGB:
1280 if (ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
1281 fprintf(ctx->fd, "%s", RGBcolorimage);
1282 PSColorContigPreamble(ctx, w, h, 3);
1283 PSDataColorContig(ctx, tif, w, h, 3);
1285 PSColorSeparatePreamble(ctx, w, h, 3);
1286 PSDataColorSeparate(ctx, tif, w, h, 3);
1289 case PHOTOMETRIC_SEPARATED:
1290 /* XXX should emit CMYKcolorimage */
1291 if (ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
1292 PSColorContigPreamble(ctx, w, h, 4);
1293 PSDataColorContig(ctx, tif, w, h, 4);
1295 PSColorSeparatePreamble(ctx, w, h, 4);
1296 PSDataColorSeparate(ctx, tif, w, h, 4);
1299 case PHOTOMETRIC_PALETTE:
1300 fprintf(ctx->fd, "%s", RGBcolorimage);
1301 PhotoshopBanner(ctx, w, h, 1, 3, "false 3 colorimage");
1302 fprintf(ctx->fd, "/scanLine %ld string def\n",
1303 (long) ctx->ps_bytesperrow * 3L);
1304 fprintf(ctx->fd, "%lu %lu 8\n",
1305 (unsigned long) w, (unsigned long) h);
1306 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1307 (unsigned long) w, (unsigned long) h,
1310 "{currentfile scanLine readhexstring pop} bind\n");
1311 fprintf(ctx->fd, "false 3 colorimage\n");
1312 PSDataPalette(ctx, tif, w, h);
1314 case PHOTOMETRIC_MINISBLACK:
1315 case PHOTOMETRIC_MINISWHITE:
1316 PhotoshopBanner(ctx, w, h, 1, 1, imageOp);
1317 fprintf(ctx->fd, "/scanLine %ld string def\n",
1318 (long) ctx->ps_bytesperrow);
1319 fprintf(ctx->fd, "%lu %lu %d\n",
1320 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1321 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1322 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1324 "{currentfile scanLine readhexstring pop} bind\n");
1325 fprintf(ctx->fd, "%s\n", imageOp);
1326 PSDataBW(ctx, tif, w, h);
1329 putc('\n', ctx->fd);
1333 PSColorContigPreamble(TIFF2PSContext* ctx, uint32 w, uint32 h, int nc)
1335 ctx->ps_bytesperrow = nc * (ctx->tf_bytesperrow / ctx->samplesperpixel);
1336 PhotoshopBanner(ctx, w, h, 1, nc, "false %d colorimage");
1337 fprintf(ctx->fd, "/line %ld string def\n", (long) ctx->ps_bytesperrow);
1338 fprintf(ctx->fd, "%lu %lu %d\n",
1339 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1340 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1341 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1342 fprintf(ctx->fd, "{currentfile line readhexstring pop} bind\n");
1343 fprintf(ctx->fd, "false %d colorimage\n", nc);
1347 PSColorSeparatePreamble(TIFF2PSContext* ctx, uint32 w, uint32 h, int nc)
1351 PhotoshopBanner(ctx, w, h, ctx->ps_bytesperrow, nc, "true %d colorimage");
1352 for (i = 0; i < nc; i++)
1353 fprintf(ctx->fd, "/line%d %ld string def\n",
1354 i, (long) ctx->ps_bytesperrow);
1355 fprintf(ctx->fd, "%lu %lu %d\n",
1356 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1357 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu] \n",
1358 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1359 for (i = 0; i < nc; i++)
1360 fprintf(ctx->fd, "{currentfile line%d readhexstring pop}bind\n", i);
1361 fprintf(ctx->fd, "true %d colorimage\n", nc);
1364 #define DOBREAK(len, howmany, fd) \
1365 if (((len) -= (howmany)) <= 0) { \
1367 (len) = MAXLINE-(howmany); \
1369 #define PUTHEX(c,fd) putc(hex[((c)>>4)&0xf],fd); putc(hex[(c)&0xf],fd)
1372 PSDataColorContig(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h, int nc)
1375 int breaklen = MAXLINE, cc, es = ctx->samplesperpixel - nc;
1376 unsigned char *tf_buf;
1377 unsigned char *cp, c;
1380 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1381 if (tf_buf == NULL) {
1382 TIFFError(ctx->filename, "No space for scanline buffer");
1385 for (row = 0; row < h; row++) {
1386 if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
1392 for (; cc < ctx->tf_bytesperrow; cc += ctx->samplesperpixel) {
1393 DOBREAK(breaklen, nc, ctx->fd);
1395 * For images with ctx->alpha, matte against
1396 * a white background; i.e.
1397 * Cback * (1 - Aimage)
1400 adjust = 255 - cp[nc];
1402 case 4: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1403 case 3: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1404 case 2: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1405 case 1: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1411 for (; cc < ctx->tf_bytesperrow; cc += ctx->samplesperpixel) {
1412 DOBREAK(breaklen, nc, ctx->fd);
1414 case 4: c = *cp++; PUTHEX(c,ctx->fd);
1415 case 3: c = *cp++; PUTHEX(c,ctx->fd);
1416 case 2: c = *cp++; PUTHEX(c,ctx->fd);
1417 case 1: c = *cp++; PUTHEX(c,ctx->fd);
1423 _TIFFfree((char *) tf_buf);
1427 PSDataColorSeparate(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h, int nc)
1430 int breaklen = MAXLINE, cc;
1432 unsigned char *tf_buf;
1433 unsigned char *cp, c;
1436 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1437 if (tf_buf == NULL) {
1438 TIFFError(ctx->filename, "No space for scanline buffer");
1441 maxs = (ctx->samplesperpixel > nc ? nc : ctx->samplesperpixel);
1442 for (row = 0; row < h; row++) {
1443 for (s = 0; s < maxs; s++) {
1444 if (TIFFReadScanline(tif, tf_buf, row, s) < 0)
1446 for (cp = tf_buf, cc = 0; cc < ctx->tf_bytesperrow; cc++) {
1447 DOBREAK(breaklen, 1, ctx->fd);
1453 _TIFFfree((char *) tf_buf);
1456 #define PUTRGBHEX(c,fd) \
1457 PUTHEX(rmap[c],fd); PUTHEX(gmap[c],fd); PUTHEX(bmap[c],fd)
1460 PSDataPalette(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1462 uint16 *rmap, *gmap, *bmap;
1464 int breaklen = MAXLINE, cc, nc;
1465 unsigned char *tf_buf;
1466 unsigned char *cp, c;
1469 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
1470 TIFFError(ctx->filename, "Palette image w/o \"Colormap\" tag");
1473 switch (ctx->bitspersample) {
1474 case 8: case 4: case 2: case 1:
1477 TIFFError(ctx->filename, "Depth %d not supported", ctx->bitspersample);
1480 nc = 3 * (8 / ctx->bitspersample);
1481 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1482 if (tf_buf == NULL) {
1483 TIFFError(ctx->filename, "No space for scanline buffer");
1486 if (checkcmap(ctx, tif, 1<<ctx->bitspersample, rmap, gmap, bmap) == 16) {
1488 #define CVT(x) ((unsigned short) (((x) * 255) / ((1U<<16)-1)))
1489 for (i = (1<<ctx->bitspersample)-1; i >= 0; i--) {
1490 rmap[i] = CVT(rmap[i]);
1491 gmap[i] = CVT(gmap[i]);
1492 bmap[i] = CVT(bmap[i]);
1496 for (row = 0; row < h; row++) {
1497 if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
1499 for (cp = tf_buf, cc = 0; cc < ctx->tf_bytesperrow; cc++) {
1500 DOBREAK(breaklen, nc, ctx->fd);
1501 switch (ctx->bitspersample) {
1503 c = *cp++; PUTRGBHEX(c, ctx->fd);
1506 c = *cp++; PUTRGBHEX(c&0xf, ctx->fd);
1507 c >>= 4; PUTRGBHEX(c, ctx->fd);
1510 c = *cp++; PUTRGBHEX(c&0x3, ctx->fd);
1511 c >>= 2; PUTRGBHEX(c&0x3, ctx->fd);
1512 c >>= 2; PUTRGBHEX(c&0x3, ctx->fd);
1513 c >>= 2; PUTRGBHEX(c, ctx->fd);
1516 c = *cp++; 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&0x1, ctx->fd);
1521 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1522 c >>= 1; PUTRGBHEX(c&0x1, ctx->fd);
1523 c >>= 1; PUTRGBHEX(c, ctx->fd);
1528 _TIFFfree((char *) tf_buf);
1532 PSDataBW(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1534 int breaklen = MAXLINE;
1535 unsigned char* tf_buf;
1537 tsize_t stripsize = TIFFStripSize(tif);
1540 #if defined( EXP_ASCII85ENCODER )
1541 int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
1542 uint8 *ascii85_p = 0; /* Holds ASCII85 encoded data */
1546 tf_buf = (unsigned char *) _TIFFmalloc(stripsize);
1547 memset(tf_buf, 0, stripsize);
1548 if (tf_buf == NULL) {
1549 TIFFError(ctx->filename, "No space for scanline buffer");
1553 #if defined( EXP_ASCII85ENCODER )
1554 if ( ctx->ascii85 ) {
1556 * Allocate a buffer to hold the ASCII85 encoded data. Note
1557 * that it is allocated with sufficient room to hold the
1558 * encoded data (5*stripsize/4) plus the EOD marker (+8)
1559 * and formatting line breaks. The line breaks are more
1560 * than taken care of by using 6*stripsize/4 rather than
1564 ascii85_p = _TIFFmalloc( (stripsize+(stripsize/2)) + 8 );
1567 _TIFFfree( tf_buf );
1569 TIFFError( ctx->filename,
1570 "Cannot allocate ASCII85 encoding buffer." );
1579 for (s = 0; s < TIFFNumberOfStrips(tif); s++) {
1580 int cc = TIFFReadEncodedStrip(tif, s, tf_buf, stripsize);
1582 TIFFError(ctx->filename, "Can't read strip");
1586 if (ctx->photometric == PHOTOMETRIC_MINISWHITE) {
1587 for (cp += cc; --cp >= tf_buf;)
1592 #if defined( EXP_ASCII85ENCODER )
1595 for (i = 0; i < cc; i+=2) {
1596 adjust = 255 - cp[i + 1];
1597 cp[i / 2] = cp[i] + adjust;
1602 ascii85_l = Ascii85EncodeBlock(ctx, ascii85_p, 1, cp,
1605 if ( ascii85_l > 0 )
1606 fwrite( ascii85_p, ascii85_l, 1, ctx->fd );
1609 Ascii85Put(ctx, *cp++);
1610 #endif /* EXP_ASCII85_ENCODER */
1617 DOBREAK(breaklen, 1, ctx->fd);
1619 * For images with ctx->alpha, matte against
1620 * a white background; i.e.
1621 * Cback * (1 - Aimage)
1624 adjust = 255 - cp[1];
1625 c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1631 DOBREAK(breaklen, 1, ctx->fd);
1638 if ( !ctx->ascii85 )
1640 if ( ctx->level2 || ctx->level3)
1641 fputs(">\n", ctx->fd);
1643 #if !defined( EXP_ASCII85ENCODER )
1648 _TIFFfree( ascii85_p );
1655 Ascii85Init(TIFF2PSContext *ctx)
1657 ctx->ascii85breaklen = 2*MAXLINE;
1658 ctx->ascii85count = 0;
1662 Ascii85Encode(unsigned char* raw, char *buf)
1666 word = (((raw[0]<<8)+raw[1])<<16) + (raw[2]<<8) + raw[3];
1671 q = word / (85L*85*85*85); /* actually only a byte */
1672 buf[0] = (char) (q + '!');
1674 word -= q * (85L*85*85*85); q = word / (85L*85*85);
1675 buf[1] = (char) (q + '!');
1677 word -= q * (85L*85*85); q = word / (85*85);
1678 buf[2] = (char) (q + '!');
1680 w1 = (uint16) (word - q*(85L*85));
1681 buf[3] = (char) ((w1 / 85) + '!');
1682 buf[4] = (char) ((w1 % 85) + '!');
1685 buf[0] = 'z', buf[1] = '\0';
1689 Ascii85Put(TIFF2PSContext *ctx, unsigned char code)
1691 ctx->ascii85buf[ctx->ascii85count++] = code;
1692 if (ctx->ascii85count >= 4) {
1697 for (n = ctx->ascii85count, p = ctx->ascii85buf;
1698 n >= 4; n -= 4, p += 4) {
1700 Ascii85Encode(p, buf);
1701 for (cp = buf; *cp; cp++) {
1703 if (--ctx->ascii85breaklen == 0) {
1704 putc('\n', ctx->fd);
1705 ctx->ascii85breaklen = 2*MAXLINE;
1709 _TIFFmemcpy(ctx->ascii85buf, p, n);
1710 ctx->ascii85count = n;
1715 Ascii85Flush(TIFF2PSContext* ctx)
1717 if (ctx->ascii85count > 0) {
1719 _TIFFmemset(&ctx->ascii85buf[ctx->ascii85count], 0, 3);
1720 Ascii85Encode(ctx->ascii85buf, res);
1721 fwrite(res[0] == 'z' ? "!!!!" : res, ctx->ascii85count + 1, 1, ctx->fd);
1723 fputs("~>\n", ctx->fd);
1725 #if defined( EXP_ASCII85ENCODER)
1727 #define A85BREAKCNTR ctx->ascii85breaklen
1728 #define A85BREAKLEN (2*MAXLINE)
1730 /*****************************************************************************
1732 * Name: Ascii85EncodeBlock( ascii85_p, f_eod, raw_p, raw_l )
1734 * Description: This routine will encode the raw data in the buffer described
1735 * by raw_p and raw_l into ASCII85 format and store the encoding
1736 * in the buffer given by ascii85_p.
1738 * Parameters: ctx - TIFF2PS context
1739 * ascii85_p - A buffer supplied by the caller which will
1740 * contain the encoded ASCII85 data.
1741 * f_eod - Flag: Nz means to end the encoded buffer with
1742 * an End-Of-Data marker.
1743 * raw_p - Pointer to the buffer of data to be encoded
1744 * raw_l - Number of bytes in raw_p[] to be encoded
1746 * Returns: (int) < 0 Error, see errno
1747 * >= 0 Number of bytes written to ascii85_p[].
1749 * Notes: An external variable given by A85BREAKCNTR is used to
1750 * determine when to insert newline characters into the
1751 * encoded data. As each byte is placed into ascii85_p this
1752 * external is decremented. If the variable is decrement to
1753 * or past zero then a newline is inserted into ascii85_p
1754 * and the A85BREAKCNTR is then reset to A85BREAKLEN.
1755 * Note: for efficiency reasons the A85BREAKCNTR variable
1756 * is not actually checked on *every* character
1757 * placed into ascii85_p but often only for every
1760 * THE CALLER IS RESPONSIBLE FOR ENSURING THAT ASCII85_P[] IS
1761 * SUFFICIENTLY LARGE TO THE ENCODED DATA!
1762 * You will need at least 5 * (raw_l/4) bytes plus space for
1763 * newline characters and space for an EOD marker (if
1764 * requested). A safe calculation is to use 6*(raw_l/4) + 8
1765 * to size ascii85_p.
1767 *****************************************************************************/
1769 int Ascii85EncodeBlock( TIFF2PSContext *ctx, uint8 * ascii85_p,
1770 unsigned f_eod, const uint8 * raw_p, int raw_l )
1773 char ascii85[5]; /* Encoded 5 tuple */
1774 int ascii85_l; /* Number of bytes written to ascii85_p[] */
1775 int rc; /* Return code */
1776 uint32 val32; /* Unencoded 4 tuple */
1778 ascii85_l = 0; /* Nothing written yet */
1782 --raw_p; /* Prepare for pre-increment fetches */
1784 for ( ; raw_l > 3; raw_l -= 4 )
1786 val32 = *(++raw_p) << 24;
1787 val32 += *(++raw_p) << 16;
1788 val32 += *(++raw_p) << 8;
1789 val32 += *(++raw_p);
1791 if ( val32 == 0 ) /* Special case */
1793 ascii85_p[ascii85_l] = 'z';
1799 ascii85[4] = (char) ((val32 % 85) + 33);
1802 ascii85[3] = (char) ((val32 % 85) + 33);
1805 ascii85[2] = (char) ((val32 % 85) + 33);
1808 ascii85[1] = (char) ((val32 % 85) + 33);
1809 ascii85[0] = (char) ((val32 / 85) + 33);
1811 _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, sizeof(ascii85) );
1812 rc = sizeof(ascii85);
1817 if ( (A85BREAKCNTR -= rc) <= 0 )
1819 ascii85_p[ascii85_l] = '\n';
1821 A85BREAKCNTR = A85BREAKLEN;
1826 * Output any straggler bytes:
1831 int len; /* Output this many bytes */
1834 val32 = *++raw_p << 24; /* Prime the pump */
1836 if ( --raw_l > 0 ) val32 += *(++raw_p) << 16;
1837 if ( --raw_l > 0 ) val32 += *(++raw_p) << 8;
1841 ascii85[3] = (char) ((val32 % 85) + 33);
1844 ascii85[2] = (char) ((val32 % 85) + 33);
1847 ascii85[1] = (char) ((val32 % 85) + 33);
1848 ascii85[0] = (char) ((val32 / 85) + 33);
1850 _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, len );
1856 * If requested add an ASCII85 End Of Data marker:
1861 ascii85_p[ascii85_l++] = '~';
1862 ascii85_p[ascii85_l++] = '>';
1863 ascii85_p[ascii85_l++] = '\n';
1866 return ( ascii85_l );
1868 } /* Ascii85EncodeBlock() */
1870 #endif /* EXP_ASCII85ENCODER */
1872 /* vim: set ts=8 sts=8 sw=8 noet: */