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.
36 #include <stdlib.h> /* for atof */
43 #include <glib/gstdio.h>
51 * I (Bruce A. Mallett) added this revision history comment ;)
53 * Fixed PS_Lvl2page() code which outputs non-ASCII85 raw
54 * data. Moved test for when to output a line break to
55 * *after* the output of a character. This just serves
56 * to fix an eye-nuisance where the first line of raw
57 * data was one character shorter than subsequent lines.
59 * Added an experimental ASCII85 encoder which can be used
60 * only when there is a single buffer of bytes to be encoded.
61 * This version is much faster at encoding a straight-line
62 * buffer of data because it can avoid alot of the loop
63 * overhead of the byte-by-bye version. To use this version
64 * you need to define EXP_ASCII85ENCODER (experimental ...).
66 * Added bug fix given by Michael Schmidt to PS_Lvl2page()
67 * in which an end-of-data marker ('>') was not being output
68 * when producing non-ASCII85 encoded PostScript Level 2
71 * Fixed PS_Lvl2colorspace() so that it no longer assumes that
72 * a TIFF having more than 2 planes is a CMYK. This routine
73 * no longer looks at the samples per pixel but instead looks
74 * at the "photometric" value. This change allows support of
77 * Modified the PostScript L2 imaging loop so as to test if
78 * the input stream is still open before attempting to do a
79 * flushfile on it. This was done because some RIPs close
80 * the stream after doing the image operation.
82 * Got rid of the realloc() being done inside a loop in the
83 * PSRawDataBW() routine. The code now walks through the
84 * byte-size array outside the loop to determine the largest
85 * size memory block that will be needed.
87 * Added "-m" switch to ask tiff2ps to, where possible, use the
88 * "imagemask" operator instead of the "image" operator.
90 * Added the "-i #" switch to allow interpolation to be disabled.
92 * Unrolled a loop or two to improve performance.
96 * Define EXP_ASCII85ENCODER if you want to use an experimental
97 * version of the ASCII85 encoding routine. The advantage of
98 * using this routine is that tiff2ps will convert to ASCII85
99 * encoding at between 3 and 4 times the speed as compared to
100 * using the old (non-experimental) encoder. The disadvantage
101 * is that you will be using a new (and unproven) encoding
102 * routine. So user beware, you have been warned!
105 #define EXP_ASCII85ENCODER
108 * NB: this code assumes uint32 works with printf's %l[ud].
111 struct _TIFF2PSContext
113 char *filename; /* input filename */
114 FILE *fd; /* output file stream */
115 int ascii85; /* use ASCII85 encoding */
116 int interpolate; /* interpolate level2 image */
117 int level2; /* generate PostScript level 2 */
118 int level3; /* generate PostScript level 3 */
119 int generateEPSF; /* generate Encapsulated PostScript */
120 int PSduplex; /* enable duplex printing */
121 int PStumble; /* enable top edge binding */
122 int PSavoiddeadzone; /* enable avoiding printer deadzone */
123 double maxPageHeight; /* maximum size to fit on page */
124 double splitOverlap; /* amount for split pages to overlag */
125 int rotate; /* rotate image by 180 degrees */
126 int useImagemask; /* Use imagemask instead of image operator */
127 uint16 res_unit; /* Resolution units: 2 - inches, 3 - cm */
128 int npages; /* number of pages processed */
130 tsize_t tf_bytesperrow;
131 tsize_t ps_bytesperrow;
132 tsize_t tf_rowsperstrip;
133 tsize_t tf_numberstrips;
136 * ASCII85 Encoding Support.
138 unsigned char ascii85buf[10];
141 uint16 samplesperpixel;
142 uint16 bitspersample;
143 uint16 planarconfiguration;
150 static void PSpage(TIFF2PSContext*, TIFF*, uint32, uint32);
151 static void PSColorContigPreamble(TIFF2PSContext*, uint32, uint32, int);
152 static void PSColorSeparatePreamble(TIFF2PSContext*, uint32, uint32, int);
153 static void PSDataColorContig(TIFF2PSContext*, TIFF*, uint32, uint32, int);
154 static void PSDataColorSeparate(TIFF2PSContext*, TIFF*, uint32, uint32, int);
155 static void PSDataPalette(TIFF2PSContext*, TIFF*, uint32, uint32);
156 static void PSDataBW(TIFF2PSContext*, TIFF*, uint32, uint32);
157 static void Ascii85Init(TIFF2PSContext*);
158 static void Ascii85Put(TIFF2PSContext*, unsigned char);
159 static void Ascii85Flush(TIFF2PSContext*);
160 static void PSHead(TIFF2PSContext*, TIFF*, uint32, uint32,
161 double, double, double, double);
162 static void PSTail(TIFF2PSContext*);
164 #if defined( EXP_ASCII85ENCODER )
165 static int Ascii85EncodeBlock(TIFF2PSContext*, uint8 * ascii85_p,
166 unsigned f_eod, const uint8 * raw_p, int raw_l);
169 TIFF2PSContext* tiff2ps_context_new(const gchar *filename) {
172 ctx = g_new0(TIFF2PSContext, 1);
173 ctx->filename = g_strdup(filename);
174 ctx->fd = g_fopen(ctx->filename, "w");
177 ctx->interpolate = TRUE; /* interpolate level2 image */
178 ctx->PSavoiddeadzone = TRUE; /* enable avoiding printer deadzone */
182 void tiff2ps_context_finalize(TIFF2PSContext *ctx) {
185 g_free(ctx->filename);
190 checkImage(TIFF2PSContext *ctx, TIFF* tif)
192 switch (ctx->photometric) {
193 case PHOTOMETRIC_YCBCR:
194 if ((ctx->compression == COMPRESSION_JPEG
195 || ctx->compression == COMPRESSION_OJPEG)
196 && ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
197 /* can rely on libjpeg to convert to RGB */
198 TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE,
200 ctx->photometric = PHOTOMETRIC_RGB;
202 if (ctx->level2 || ctx->level3)
204 TIFFError(ctx->filename, "Can not handle image with %s",
205 "Ctx->PhotometricInterpretation=YCbCr");
209 case PHOTOMETRIC_RGB:
210 if (ctx->alpha && ctx->bitspersample != 8) {
211 TIFFError(ctx->filename,
212 "Can not handle %d-bit/sample RGB image with ctx->alpha",
217 case PHOTOMETRIC_SEPARATED:
218 case PHOTOMETRIC_PALETTE:
219 case PHOTOMETRIC_MINISBLACK:
220 case PHOTOMETRIC_MINISWHITE:
222 case PHOTOMETRIC_LOGL:
223 case PHOTOMETRIC_LOGLUV:
224 if (ctx->compression != COMPRESSION_SGILOG &&
225 ctx->compression != COMPRESSION_SGILOG24) {
226 TIFFError(ctx->filename,
227 "Can not handle %s data with ctx->compression other than SGILog",
228 (ctx->photometric == PHOTOMETRIC_LOGL) ?
233 /* rely on library to convert to RGB/greyscale */
234 TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
235 ctx->photometric = (ctx->photometric == PHOTOMETRIC_LOGL) ?
236 PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB;
237 ctx->bitspersample = 8;
239 case PHOTOMETRIC_CIELAB:
242 TIFFError(ctx->filename,
243 "Can not handle image with Ctx->PhotometricInterpretation=%d",
247 switch (ctx->bitspersample) {
252 TIFFError(ctx->filename, "Can not handle %d-bit/sample image",
256 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
257 ctx->extrasamples > 0)
258 TIFFWarning(ctx->filename, "Ignoring extra samples");
262 #define PS_UNIT_SIZE 72.0F
263 #define PSUNITS(npix,res) ((npix) * (PS_UNIT_SIZE / (res)))
265 static char RGBcolorimage[] = "\
268 dup length 3 idiv string 0 3 0\n\
270 add 2 1 roll 1 sub dup 0 eq {\n\
277 } { 2 1 roll } ifelse\n\
281 /colorimage where {pop} {\n\
282 /colorimage {pop pop /rgbproc exch def {bwproc} image} bind def\n\
287 * Adobe Photoshop requires a comment line of the form:
289 * %ImageData: <cols> <rows> <depth> <main channels> <pad channels>
290 * <block size> <1 for binary|2 for hex> "data start"
292 * It is claimed to be part of some future revision of the EPS spec.
295 PhotoshopBanner(TIFF2PSContext* ctx, uint32 w, uint32 h, int bs, int nc,
298 fprintf(ctx->fd, "%%ImageData: %ld %ld %d %d 0 %d 2 \"",
299 (long) w, (long) h, ctx->bitspersample, nc, bs);
300 fprintf(ctx->fd, startline, nc);
301 fprintf(ctx->fd, "\"\n");
305 * pw : image width in pixels
306 * ph : image height in pixels
307 * pprw : image width in PS units (72 dpi)
308 * pprh : image height in PS units (72 dpi)
311 setupPageState(TIFF2PSContext *ctx, TIFF* tif, uint32* pw, uint32* ph,
312 double* pprw, double* pprh)
314 float xres = 0.0F, yres = 0.0F;
316 TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, pw);
317 TIFFGetField(tif, TIFFTAG_IMAGELENGTH, ph);
318 if (ctx->res_unit == 0)
319 TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &ctx->res_unit);
321 * Calculate printable area.
323 if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres)
324 || fabs(xres) < 0.0000001)
326 if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres)
327 || fabs(yres) < 0.0000001)
329 switch (ctx->res_unit) {
330 case RESUNIT_CENTIMETER:
331 xres *= 2.54F, yres *= 2.54F;
337 xres *= PS_UNIT_SIZE, yres *= PS_UNIT_SIZE;
340 *pprh = PSUNITS(*ph, yres);
341 *pprw = PSUNITS(*pw, xres);
345 isCCITTCompression(TIFF* tif)
348 TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
349 return (compress == COMPRESSION_CCITTFAX3 ||
350 compress == COMPRESSION_CCITTFAX4 ||
351 compress == COMPRESSION_CCITTRLE ||
352 compress == COMPRESSION_CCITTRLEW);
355 static char *hex = "0123456789abcdef";
358 * imagewidth & imageheight are 1/72 inches
359 * pagewidth & pageheight are inches
362 PlaceImage(TIFF2PSContext *ctx, double pagewidth, double pageheight,
363 double imagewidth, double imageheight, int splitpage,
364 double lm, double bm, int cnt)
370 double left_offset = lm * PS_UNIT_SIZE;
371 double bottom_offset = bm * PS_UNIT_SIZE;
372 double subimageheight;
375 /* buffers for locale-insitive number formatting */
376 gchar buf[2][G_ASCII_DTOSTR_BUF_SIZE];
378 pagewidth *= PS_UNIT_SIZE;
379 pageheight *= PS_UNIT_SIZE;
381 if (ctx->maxPageHeight==0)
384 splitheight = ctx->maxPageHeight * PS_UNIT_SIZE;
385 overlap = ctx->splitOverlap * PS_UNIT_SIZE;
389 * if too wide, scrunch to fit
390 * else leave it alone
392 if (imagewidth <= pagewidth) {
399 * if too long, scrunch to fit
400 * if too short, move to top of page
402 if (imageheight <= pageheight) {
403 yscale = imageheight;
404 ytran = pageheight - imageheight;
405 } else if (imageheight > pageheight &&
406 (splitheight == 0 || imageheight <= splitheight)) {
408 } else /* imageheight > splitheight */ {
409 subimageheight = imageheight - (pageheight-overlap)*splitpage;
410 if (subimageheight <= pageheight) {
411 yscale = imageheight;
412 ytran = pageheight - subimageheight;
414 } else if ( subimageheight > pageheight && subimageheight <= splitheight) {
415 yscale = imageheight * pageheight / subimageheight;
418 } else /* sumimageheight > splitheight */ {
419 yscale = imageheight;
420 ytran = pageheight - subimageheight;
425 bottom_offset += ytran / (cnt?2:1);
427 left_offset += xtran / 2;
429 fprintf(ctx->fd, "%s %s translate\n",
430 g_ascii_dtostr(buf[0], sizeof(buf[0]), left_offset),
431 g_ascii_dtostr(buf[1], sizeof(buf[1]), bottom_offset));
432 fprintf(ctx->fd, "%s %s scale\n",
433 g_ascii_dtostr(buf[0], sizeof(buf[0]), xscale),
434 g_ascii_dtostr(buf[1], sizeof(buf[1]), yscale));
436 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
443 tiff2ps_process_page(TIFF2PSContext* ctx, TIFF* tif, double pw, double ph,
444 double lm, double bm, gboolean cnt)
450 double left_offset = lm * PS_UNIT_SIZE;
451 double bottom_offset = bm * PS_UNIT_SIZE;
454 /* buffers for locale-insitive number formatting */
455 gchar buf[2][G_ASCII_DTOSTR_BUF_SIZE];
457 if (!TIFFGetField(tif, TIFFTAG_XPOSITION, &ox))
459 if (!TIFFGetField(tif, TIFFTAG_YPOSITION, &oy))
461 setupPageState(ctx, tif, &w, &h, &prw, &prh);
463 ctx->tf_numberstrips = TIFFNumberOfStrips(tif);
464 TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP,
465 &ctx->tf_rowsperstrip);
466 setupPageState(ctx, tif, &w, &h, &prw, &prh);
468 PSHead(ctx, tif, w, h, prw, prh, ox, oy);
469 TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE,
470 &ctx->bitspersample);
471 TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL,
472 &ctx->samplesperpixel);
473 TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG,
474 &ctx->planarconfiguration);
475 TIFFGetField(tif, TIFFTAG_COMPRESSION, &ctx->compression);
476 TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
477 &ctx->extrasamples, &sampleinfo);
478 ctx->alpha = (ctx->extrasamples == 1 &&
479 sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
480 if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &ctx->photometric)) {
481 switch (ctx->samplesperpixel - ctx->extrasamples) {
483 if (isCCITTCompression(tif))
484 ctx->photometric = PHOTOMETRIC_MINISWHITE;
486 ctx->photometric = PHOTOMETRIC_MINISBLACK;
489 ctx->photometric = PHOTOMETRIC_RGB;
492 ctx->photometric = PHOTOMETRIC_SEPARATED;
496 if (checkImage(ctx, tif)) {
497 ctx->tf_bytesperrow = TIFFScanlineSize(tif);
499 fprintf(ctx->fd, "%%%%Page: %d %d\n", ctx->npages,
501 if (!ctx->generateEPSF && ( ctx->level2 || ctx->level3 )) {
502 double psw = 0.0, psh = 0.0;
504 psw = pw * PS_UNIT_SIZE;
505 if (ctx->res_unit == RESUNIT_CENTIMETER)
508 psw=ctx->rotate ? prh:prw;
510 psh = ph * PS_UNIT_SIZE;
511 if (ctx->res_unit == RESUNIT_CENTIMETER)
514 psh=ctx->rotate ? prw:prh;
516 "1 dict begin /PageSize [ %s %s ] def currentdict end setpagedevice\n",
517 g_ascii_dtostr(buf[0], sizeof(buf[0]), psw),
518 g_ascii_dtostr(buf[1], sizeof(buf[1]), psh));
520 "<<\n /Policies <<\n /PageSize 3\n >>\n>> setpagedevice\n",
523 fprintf(ctx->fd, "gsave\n");
524 fprintf(ctx->fd, "100 dict begin\n");
525 if (pw != 0 || ph != 0) {
530 if (ctx->maxPageHeight) { /* used -H option */
531 split = PlaceImage(ctx,pw,ph,prw,prh,
534 PSpage(ctx, tif, w, h);
535 fprintf(ctx->fd, "end\n");
536 fprintf(ctx->fd, "grestore\n");
537 fprintf(ctx->fd, "showpage\n");
539 fprintf(ctx->fd, "%%%%Page: %d %d\n",
540 ctx->npages, ctx->npages);
541 fprintf(ctx->fd, "gsave\n");
542 fprintf(ctx->fd, "100 dict begin\n");
543 split = PlaceImage(ctx,pw,ph,prw,prh,
550 /* NB: maintain image aspect ratio */
551 scale = pw/prw < ph/prh ?
557 (ph - prh * scale) / 2;
559 (pw - prw * scale) / 2;
561 fprintf(ctx->fd, "%s %s translate\n",
562 g_ascii_dtostr(buf[0], sizeof(buf[0]), left_offset),
563 g_ascii_dtostr(buf[1], sizeof(buf[1]), bottom_offset));
564 fprintf(ctx->fd, "%s %s scale\n",
565 g_ascii_dtostr(buf[0], sizeof(buf[0]), prw * scale),
566 g_ascii_dtostr(buf[1], sizeof(buf[1]), prh * scale));
568 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
571 fprintf(ctx->fd, "%s %s scale\n",
572 g_ascii_dtostr(buf[0], sizeof(buf[0]), prw),
573 g_ascii_dtostr(buf[1], sizeof(buf[1]), prh));
575 fputs ("1 1 translate 180 ctx->rotate\n", ctx->fd);
577 PSpage(ctx, tif, w, h);
578 fprintf(ctx->fd, "end\n");
579 fprintf(ctx->fd, "grestore\n");
580 fprintf(ctx->fd, "showpage\n");
585 static char DuplexPreamble[] = "\
586 %%BeginFeature: *Duplex True\n\
588 /languagelevel where { pop languagelevel } { 1 } ifelse\n\
589 2 ge { 1 dict dup /Duplex true put setpagedevice }\n\
590 { statusdict /setduplex known { statusdict begin setduplex true end } if\n\
596 static char TumblePreamble[] = "\
597 %%BeginFeature: *Tumble True\n\
599 /languagelevel where { pop languagelevel } { 1 } ifelse\n\
600 2 ge { 1 dict dup /Tumble true put setpagedevice }\n\
601 { statusdict /settumble known { statusdict begin true settumble end } if\n\
607 static char AvoidDeadZonePreamble[] = "\
608 gsave newpath clippath pathbbox grestore\n\
609 4 2 roll 2 copy translate\n\
610 exch 3 1 roll sub 3 1 roll sub exch\n\
611 currentpagedevice /PageSize get aload pop\n\
612 exch 3 1 roll div 3 1 roll div abs exch abs\n\
613 2 copy gt { exch } if pop\n\
614 dup 1 lt { dup scale } { pop } ifelse\n\
618 PSHead(TIFF2PSContext *ctx, TIFF *tif, uint32 w, uint32 h,
619 double pw, double ph, double ox, double oy)
623 (void) tif; (void) w; (void) h;
625 fprintf(ctx->fd, "%%!PS-Adobe-3.0%s\n",
626 ctx->generateEPSF ? " EPSF-3.0" : "");
627 fprintf(ctx->fd, "%%%%Creator: Evince\n");
628 fprintf(ctx->fd, "%%%%CreationDate: %s", ctime(&t));
629 fprintf(ctx->fd, "%%%%DocumentData: Clean7Bit\n");
630 fprintf(ctx->fd, "%%%%Origin: %ld %ld\n", (long) ox, (long) oy);
631 /* NB: should use PageBoundingBox */
632 fprintf(ctx->fd, "%%%%BoundingBox: 0 0 %ld %ld\n",
633 (long) ceil(pw), (long) ceil(ph));
634 fprintf(ctx->fd, "%%%%LanguageLevel: %d\n",
635 (ctx->level3 ? 3 : (ctx->level2 ? 2 : 1)));
636 fprintf(ctx->fd, "%%%%Pages: (atend)\n");
637 fprintf(ctx->fd, "%%%%EndComments\n");
638 fprintf(ctx->fd, "%%%%BeginSetup\n");
640 fprintf(ctx->fd, "%s", DuplexPreamble);
642 fprintf(ctx->fd, "%s", TumblePreamble);
643 if (ctx->PSavoiddeadzone && (ctx->level2 || ctx->level3))
644 fprintf(ctx->fd, "%s", AvoidDeadZonePreamble);
645 fprintf(ctx->fd, "%%%%EndSetup\n");
649 PSTail(TIFF2PSContext *ctx)
653 fprintf(ctx->fd, "%%%%Trailer\n");
654 fprintf(ctx->fd, "%%%%Pages: %d\n", ctx->npages);
655 fprintf(ctx->fd, "%%%%EOF\n");
659 checkcmap(TIFF2PSContext* ctx, TIFF* tif, int n,
660 uint16* r, uint16* g, uint16* b)
664 if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
666 TIFFWarning(ctx->filename, "Assuming 8-bit colormap");
671 PS_Lvl2colorspace(TIFF2PSContext* ctx, TIFF* tif)
673 uint16 *rmap, *gmap, *bmap;
675 const char * colorspace_p;
677 switch ( ctx->photometric )
679 case PHOTOMETRIC_SEPARATED:
680 colorspace_p = "CMYK";
683 case PHOTOMETRIC_RGB:
684 colorspace_p = "RGB";
688 colorspace_p = "Gray";
692 * Set up PostScript Level 2 colorspace according to
693 * section 4.8 in the PostScript refenence manual.
695 fputs("% PostScript Level 2 only.\n", ctx->fd);
696 if (ctx->photometric != PHOTOMETRIC_PALETTE) {
697 if (ctx->photometric == PHOTOMETRIC_YCBCR) {
700 fprintf(ctx->fd, "/Device%s setcolorspace\n", colorspace_p );
705 * Set up an indexed/palette colorspace
707 num_colors = (1 << ctx->bitspersample);
708 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
709 TIFFError(ctx->filename,
710 "Palette image w/o \"Colormap\" tag");
713 if (checkcmap(ctx, tif, num_colors, rmap, gmap, bmap) == 16) {
715 * Convert colormap to 8-bits values.
717 #define CVT(x) (((x) * 255) / ((1L<<16)-1))
718 for (i = 0; i < num_colors; i++) {
719 rmap[i] = CVT(rmap[i]);
720 gmap[i] = CVT(gmap[i]);
721 bmap[i] = CVT(bmap[i]);
725 fprintf(ctx->fd, "[ /Indexed /DeviceRGB %d", num_colors - 1);
728 fputs("\n<~", ctx->fd);
729 ctx->ascii85breaklen -= 2;
731 fputs(" <", ctx->fd);
732 for (i = 0; i < num_colors; i++) {
734 Ascii85Put(ctx, (unsigned char)rmap[i]);
735 Ascii85Put(ctx, (unsigned char)gmap[i]);
736 Ascii85Put(ctx, (unsigned char)bmap[i]);
738 fputs((i % 8) ? " " : "\n ", ctx->fd);
739 fprintf(ctx->fd, "%02x%02x%02x",
740 rmap[i], gmap[i], bmap[i]);
746 fputs(">\n", ctx->fd);
747 fputs("] setcolorspace\n", ctx->fd);
751 PS_Lvl2ImageDict(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
754 uint32 tile_width, tile_height;
755 uint16 predictor, minsamplevalue, maxsamplevalue;
757 char im_h[64], im_x[64], im_y[64];
758 char * imageOp = "image";
760 if ( ctx->useImagemask && (ctx->bitspersample == 1) )
761 imageOp = "imagemask";
763 (void)strcpy(im_x, "0");
764 (void)sprintf(im_y, "%lu", (long) h);
765 (void)sprintf(im_h, "%lu", (long) h);
768 if (TIFFIsTiled(tif)) {
769 repeat_count = TIFFNumberOfTiles(tif);
770 TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width);
771 TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height);
772 if (tile_width > w || tile_height > h ||
773 (w % tile_width) != 0 || (h % tile_height != 0)) {
775 * The tiles does not fit image width and height.
776 * Set up a clip rectangle for the image unit square.
778 fputs("0 0 1 1 rectclip\n", ctx->fd);
780 if (tile_width < w) {
781 fputs("/im_x 0 def\n", ctx->fd);
782 (void)strcpy(im_x, "im_x neg");
784 if (tile_height < h) {
785 fputs("/im_y 0 def\n", ctx->fd);
786 (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
789 repeat_count = ctx->tf_numberstrips;
790 tile_height = ctx->tf_rowsperstrip;
793 if (repeat_count > 1) {
794 fputs("/im_y 0 def\n", ctx->fd);
795 fprintf(ctx->fd, "/im_h %lu def\n",
796 (unsigned long) tile_height);
797 (void)strcpy(im_h, "im_h");
798 (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
803 * Output start of exec block
805 fputs("{ % exec\n", ctx->fd);
807 if (repeat_count > 1)
808 fprintf(ctx->fd, "%d { %% repeat\n", repeat_count);
811 * Output filter options and image dictionary.
814 fputs(" /im_stream currentfile /ASCII85Decode filter def\n",
816 fputs(" <<\n", ctx->fd);
817 fputs(" /ImageType 1\n", ctx->fd);
818 fprintf(ctx->fd, " /Width %lu\n", (unsigned long) tile_width);
820 * Workaround for some software that may crash when last strip
821 * of image contains fewer number of scanlines than specified
822 * by the `/Height' variable. So for stripped images with multiple
823 * strips we will set `/Height' as `im_h', because one is
824 * recalculated for each strip - including the (smaller) final strip.
825 * For tiled images and images with only one strip `/Height' will
826 * contain number of scanlines in tile (or image height in case of
827 * one-stripped image).
829 if (TIFFIsTiled(tif) || ctx->tf_numberstrips == 1)
830 fprintf(ctx->fd, " /Height %lu\n", (unsigned long) tile_height);
832 fprintf(ctx->fd, " /Height im_h\n");
834 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE && ctx->samplesperpixel > 1)
835 fputs(" /MultipleDataSources true\n", ctx->fd);
836 fprintf(ctx->fd, " /ImageMatrix [ %lu 0 0 %ld %s %s ]\n",
837 (unsigned long) w, - (long)h, im_x, im_y);
838 fprintf(ctx->fd, " /BitsPerComponent %d\n", ctx->bitspersample);
839 fprintf(ctx->fd, " /Ctx->Interpolate %s\n", ctx->interpolate ? "true" : "false");
841 switch (ctx->samplesperpixel - ctx->extrasamples) {
843 switch (ctx->photometric) {
844 case PHOTOMETRIC_MINISBLACK:
845 fputs(" /Decode [0 1]\n", ctx->fd);
847 case PHOTOMETRIC_MINISWHITE:
848 switch (ctx->compression) {
849 case COMPRESSION_CCITTRLE:
850 case COMPRESSION_CCITTRLEW:
851 case COMPRESSION_CCITTFAX3:
852 case COMPRESSION_CCITTFAX4:
854 * Manage inverting with /Blackis1 flag
855 * since there migth be uncompressed parts
857 fputs(" /Decode [0 1]\n", ctx->fd);
863 fputs(" /Decode [1 0]\n", ctx->fd);
867 case PHOTOMETRIC_PALETTE:
868 TIFFGetFieldDefaulted(tif, TIFFTAG_MINSAMPLEVALUE,
870 TIFFGetFieldDefaulted(tif, TIFFTAG_MAXSAMPLEVALUE,
872 fprintf(ctx->fd, " /Decode [%u %u]\n",
873 minsamplevalue, maxsamplevalue);
879 fputs(" /Decode [0 1]\n", ctx->fd);
884 switch (ctx->photometric) {
885 case PHOTOMETRIC_RGB:
886 fputs(" /Decode [0 1 0 1 0 1]\n", ctx->fd);
888 case PHOTOMETRIC_MINISWHITE:
889 case PHOTOMETRIC_MINISBLACK:
894 fputs(" /Decode [0 1 0 1 0 1]\n", ctx->fd);
902 fputs(" /Decode [0 1 0 1 0 1 0 1]\n", ctx->fd);
905 fputs(" /DataSource", ctx->fd);
906 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
907 ctx->samplesperpixel > 1)
908 fputs(" [", ctx->fd);
910 fputs(" im_stream", ctx->fd);
912 fputs(" currentfile /ASCIIHexDecode filter", ctx->fd);
915 switch (ctx->compression) {
916 case COMPRESSION_NONE: /* 1: uncompressed */
918 case COMPRESSION_CCITTRLE: /* 2: CCITT modified Huffman RLE */
919 case COMPRESSION_CCITTRLEW: /* 32771: #1 w/ word alignment */
920 case COMPRESSION_CCITTFAX3: /* 3: CCITT Group 3 fax encoding */
921 case COMPRESSION_CCITTFAX4: /* 4: CCITT Group 4 fax encoding */
922 fputs("\n\t<<\n", ctx->fd);
923 if (ctx->compression == COMPRESSION_CCITTFAX3) {
926 fputs("\t /EndOfLine true\n", ctx->fd);
927 fputs("\t /EndOfBlock false\n", ctx->fd);
928 if (!TIFFGetField(tif, TIFFTAG_GROUP3OPTIONS,
931 if (g3_options & GROUP3OPT_2DENCODING)
932 fprintf(ctx->fd, "\t /K %s\n", im_h);
933 if (g3_options & GROUP3OPT_UNCOMPRESSED)
934 fputs("\t /Uncompressed true\n", ctx->fd);
935 if (g3_options & GROUP3OPT_FILLBITS)
936 fputs("\t /EncodedByteAlign true\n", ctx->fd);
938 if (ctx->compression == COMPRESSION_CCITTFAX4) {
941 fputs("\t /K -1\n", ctx->fd);
942 TIFFGetFieldDefaulted(tif, TIFFTAG_GROUP4OPTIONS,
944 if (g4_options & GROUP4OPT_UNCOMPRESSED)
945 fputs("\t /Uncompressed true\n", ctx->fd);
947 if (!(tile_width == w && w == 1728U))
948 fprintf(ctx->fd, "\t /Columns %lu\n",
949 (unsigned long) tile_width);
950 fprintf(ctx->fd, "\t /Rows %s\n", im_h);
951 if (ctx->compression == COMPRESSION_CCITTRLE ||
952 ctx->compression == COMPRESSION_CCITTRLEW) {
953 fputs("\t /EncodedByteAlign true\n", ctx->fd);
954 fputs("\t /EndOfBlock false\n", ctx->fd);
956 if (ctx->photometric == PHOTOMETRIC_MINISBLACK)
957 fputs("\t /BlackIs1 true\n", ctx->fd);
958 fprintf(ctx->fd, "\t>> /CCITTFaxDecode filter");
960 case COMPRESSION_LZW: /* 5: Lempel-Ziv & Welch */
961 TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
962 if (predictor == 2) {
963 fputs("\n\t<<\n", ctx->fd);
964 fprintf(ctx->fd, "\t /Predictor %u\n", predictor);
965 fprintf(ctx->fd, "\t /Columns %lu\n",
966 (unsigned long) tile_width);
967 fprintf(ctx->fd, "\t /Colors %u\n", ctx->samplesperpixel);
968 fprintf(ctx->fd, "\t /BitsPerComponent %u\n",
970 fputs("\t>>", ctx->fd);
972 fputs(" /LZWDecode filter", ctx->fd);
974 case COMPRESSION_DEFLATE: /* 5: ZIP */
975 case COMPRESSION_ADOBE_DEFLATE:
977 TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
979 fprintf(ctx->fd, "\t %% PostScript Level 3 only.");
980 fputs("\n\t<<\n", ctx->fd);
981 fprintf(ctx->fd, "\t /Predictor %u\n", predictor);
982 fprintf(ctx->fd, "\t /Columns %lu\n",
983 (unsigned long) tile_width);
984 fprintf(ctx->fd, "\t /Colors %u\n", ctx->samplesperpixel);
985 fprintf(ctx->fd, "\t /BitsPerComponent %u\n",
987 fputs("\t>>", ctx->fd);
989 fputs(" /FlateDecode filter", ctx->fd);
991 use_rawdata = FALSE ;
994 case COMPRESSION_PACKBITS: /* 32773: Macintosh RLE */
995 fputs(" /RunLengthDecode filter", ctx->fd);
998 case COMPRESSION_OJPEG: /* 6: !6.0 JPEG */
999 case COMPRESSION_JPEG: /* 7: %JPEG DCT ctx->compression */
1002 * Code not tested yet
1004 fputs(" /DCTDecode filter", ctx->fd);
1007 use_rawdata = FALSE;
1010 case COMPRESSION_NEXT: /* 32766: NeXT 2-bit RLE */
1011 case COMPRESSION_THUNDERSCAN: /* 32809: ThunderScan RLE */
1012 case COMPRESSION_PIXARFILM: /* 32908: Pixar companded 10bit LZW */
1013 case COMPRESSION_JBIG: /* 34661: ISO JBIG */
1014 use_rawdata = FALSE;
1016 case COMPRESSION_SGILOG: /* 34676: SGI LogL or LogLuv */
1017 case COMPRESSION_SGILOG24: /* 34677: SGI 24-bit LogLuv */
1018 use_rawdata = FALSE;
1024 use_rawdata = FALSE;
1027 if (ctx->planarconfiguration == PLANARCONFIG_SEPARATE &&
1028 ctx->samplesperpixel > 1) {
1032 * NOTE: This code does not work yet...
1034 for (i = 1; i < ctx->samplesperpixel; i++)
1035 fputs(" dup", ctx->fd);
1036 fputs(" ]", ctx->fd);
1039 fprintf( ctx->fd, "\n >> %s\n", imageOp );
1041 fputs(" im_stream status { im_stream flushfile } if\n", ctx->fd);
1042 if (repeat_count > 1) {
1043 if (tile_width < w) {
1044 fprintf(ctx->fd, " /im_x im_x %lu add def\n",
1045 (unsigned long) tile_width);
1046 if (tile_height < h) {
1047 fprintf(ctx->fd, " im_x %lu ge {\n",
1049 fputs(" /im_x 0 def\n", ctx->fd);
1050 fprintf(ctx->fd, " /im_y im_y %lu add def\n",
1051 (unsigned long) tile_height);
1052 fputs(" } if\n", ctx->fd);
1055 if (tile_height < h) {
1056 if (tile_width >= w) {
1057 fprintf(ctx->fd, " /im_y im_y %lu add def\n",
1058 (unsigned long) tile_height);
1059 if (!TIFFIsTiled(tif)) {
1060 fprintf(ctx->fd, " /im_h %lu im_y sub",
1062 fprintf(ctx->fd, " dup %lu gt { pop",
1063 (unsigned long) tile_height);
1064 fprintf(ctx->fd, " %lu } if def\n",
1065 (unsigned long) tile_height);
1069 fputs("} repeat\n", ctx->fd);
1072 * End of exec function
1074 fputs("}\n", ctx->fd);
1076 return(use_rawdata);
1082 PS_Lvl2page(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1085 int use_rawdata, tiled_image, breaklen = MAXLINE;
1086 uint32 chunk_no, num_chunks, *bc;
1087 unsigned char *buf_data, *cp;
1088 tsize_t chunk_size, byte_count;
1090 #if defined( EXP_ASCII85ENCODER )
1091 int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
1092 uint8 * ascii85_p = 0; /* Holds ASCII85 encoded data */
1095 PS_Lvl2colorspace(ctx, tif);
1096 use_rawdata = PS_Lvl2ImageDict(ctx, tif, w, h);
1098 /* See http://bugzilla.remotesensing.org/show_bug.cgi?id=80 */
1099 #ifdef ENABLE_BROKEN_BEGINENDDATA
1100 fputs("%%BeginData:\n", ctx->fd);
1102 fputs("exec\n", ctx->fd);
1104 tiled_image = TIFFIsTiled(tif);
1106 num_chunks = TIFFNumberOfTiles(tif);
1107 TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc);
1109 num_chunks = TIFFNumberOfStrips(tif);
1110 TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
1114 chunk_size = (tsize_t) bc[0];
1115 for (chunk_no = 1; chunk_no < num_chunks; chunk_no++)
1116 if ((tsize_t) bc[chunk_no] > chunk_size)
1117 chunk_size = (tsize_t) bc[chunk_no];
1120 chunk_size = TIFFTileSize(tif);
1122 chunk_size = TIFFStripSize(tif);
1124 buf_data = (unsigned char *)_TIFFmalloc(chunk_size);
1126 TIFFError(ctx->filename, "Can't alloc %u bytes for %s.",
1127 chunk_size, tiled_image ? "tiles" : "strips");
1131 #if defined( EXP_ASCII85ENCODER )
1132 if ( ctx->ascii85 ) {
1134 * Allocate a buffer to hold the ASCII85 encoded data. Note
1135 * that it is allocated with sufficient room to hold the
1136 * encoded data (5*chunk_size/4) plus the EOD marker (+8)
1137 * and formatting line breaks. The line breaks are more
1138 * than taken care of by using 6*chunk_size/4 rather than
1142 ascii85_p = _TIFFmalloc( (chunk_size+(chunk_size/2)) + 8 );
1145 _TIFFfree( buf_data );
1147 TIFFError( ctx->filename,
1148 "Cannot allocate ASCII85 encoding buffer." );
1154 TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
1155 for (chunk_no = 0; chunk_no < num_chunks; chunk_no++) {
1162 byte_count = TIFFReadRawTile(tif, chunk_no,
1163 buf_data, chunk_size);
1165 byte_count = TIFFReadRawStrip(tif, chunk_no,
1166 buf_data, chunk_size);
1167 if (fillorder == FILLORDER_LSB2MSB)
1168 TIFFReverseBits(buf_data, byte_count);
1171 byte_count = TIFFReadEncodedTile(tif,
1175 byte_count = TIFFReadEncodedStrip(tif,
1179 if (byte_count < 0) {
1180 TIFFError(ctx->filename, "Can't read %s %d.",
1181 tiled_image ? "tile" : "strip", chunk_no);
1183 Ascii85Put(ctx, '\0');
1186 * For images with ctx->alpha, matte against a white background;
1187 * i.e. Cback * (1 - Aimage) where Cback = 1. We will fill the
1188 * lower part of the buffer with the modified values.
1190 * XXX: needs better solution
1193 int adjust, i, j = 0;
1194 int ncomps = ctx->samplesperpixel - ctx->extrasamples;
1195 for (i = 0; i < byte_count; i+=ctx->samplesperpixel) {
1196 adjust = 255 - buf_data[i + ncomps];
1199 buf_data[j++] = buf_data[i] + adjust;
1202 buf_data[j++] = buf_data[i] + adjust;
1203 buf_data[j++] = buf_data[i+1] + adjust;
1206 buf_data[j++] = buf_data[i] + adjust;
1207 buf_data[j++] = buf_data[i+1] + adjust;
1208 buf_data[j++] = buf_data[i+2] + adjust;
1216 #if defined( EXP_ASCII85ENCODER )
1217 ascii85_l = Ascii85EncodeBlock(ctx, ascii85_p, 1,
1218 buf_data, byte_count);
1220 if ( ascii85_l > 0 )
1221 fwrite( ascii85_p, ascii85_l, 1, ctx->fd );
1223 for (cp = buf_data; byte_count > 0; byte_count--)
1224 Ascii85Put(ctx, *cp++);
1229 for (cp = buf_data; byte_count > 0; byte_count--) {
1230 putc(hex[((*cp)>>4)&0xf], ctx->fd);
1231 putc(hex[(*cp)&0xf], ctx->fd);
1234 if (--breaklen <= 0) {
1235 putc('\n', ctx->fd);
1241 if ( !ctx->ascii85 ) {
1242 if ( ctx->level2 || ctx->level3 )
1243 putc( '>', ctx->fd );
1244 putc('\n', ctx->fd);
1246 #if !defined( EXP_ASCII85ENCODER )
1252 #if defined( EXP_ASCII85ENCODER )
1254 _TIFFfree( ascii85_p );
1256 _TIFFfree(buf_data);
1257 #ifdef ENABLE_BROKEN_BEGINENDDATA
1258 fputs("%%EndData\n", ctx->fd);
1264 PSpage(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1266 char *imageOp = "image";
1268 if ( ctx->useImagemask && (ctx->bitspersample == 1) )
1269 imageOp = "imagemask";
1271 if ((ctx->level2 || ctx->level3) && PS_Lvl2page(ctx, tif, w, h))
1273 ctx->ps_bytesperrow = ctx->tf_bytesperrow - (ctx->extrasamples * ctx->bitspersample / 8)*w;
1274 switch (ctx->photometric) {
1275 case PHOTOMETRIC_RGB:
1276 if (ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
1277 fprintf(ctx->fd, "%s", RGBcolorimage);
1278 PSColorContigPreamble(ctx, w, h, 3);
1279 PSDataColorContig(ctx, tif, w, h, 3);
1281 PSColorSeparatePreamble(ctx, w, h, 3);
1282 PSDataColorSeparate(ctx, tif, w, h, 3);
1285 case PHOTOMETRIC_SEPARATED:
1286 /* XXX should emit CMYKcolorimage */
1287 if (ctx->planarconfiguration == PLANARCONFIG_CONTIG) {
1288 PSColorContigPreamble(ctx, w, h, 4);
1289 PSDataColorContig(ctx, tif, w, h, 4);
1291 PSColorSeparatePreamble(ctx, w, h, 4);
1292 PSDataColorSeparate(ctx, tif, w, h, 4);
1295 case PHOTOMETRIC_PALETTE:
1296 fprintf(ctx->fd, "%s", RGBcolorimage);
1297 PhotoshopBanner(ctx, w, h, 1, 3, "false 3 colorimage");
1298 fprintf(ctx->fd, "/scanLine %ld string def\n",
1299 (long) ctx->ps_bytesperrow * 3L);
1300 fprintf(ctx->fd, "%lu %lu 8\n",
1301 (unsigned long) w, (unsigned long) h);
1302 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1303 (unsigned long) w, (unsigned long) h,
1306 "{currentfile scanLine readhexstring pop} bind\n");
1307 fprintf(ctx->fd, "false 3 colorimage\n");
1308 PSDataPalette(ctx, tif, w, h);
1310 case PHOTOMETRIC_MINISBLACK:
1311 case PHOTOMETRIC_MINISWHITE:
1312 PhotoshopBanner(ctx, w, h, 1, 1, imageOp);
1313 fprintf(ctx->fd, "/scanLine %ld string def\n",
1314 (long) ctx->ps_bytesperrow);
1315 fprintf(ctx->fd, "%lu %lu %d\n",
1316 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1317 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1318 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1320 "{currentfile scanLine readhexstring pop} bind\n");
1321 fprintf(ctx->fd, "%s\n", imageOp);
1322 PSDataBW(ctx, tif, w, h);
1325 putc('\n', ctx->fd);
1329 PSColorContigPreamble(TIFF2PSContext* ctx, uint32 w, uint32 h, int nc)
1331 ctx->ps_bytesperrow = nc * (ctx->tf_bytesperrow / ctx->samplesperpixel);
1332 PhotoshopBanner(ctx, w, h, 1, nc, "false %d colorimage");
1333 fprintf(ctx->fd, "/line %ld string def\n", (long) ctx->ps_bytesperrow);
1334 fprintf(ctx->fd, "%lu %lu %d\n",
1335 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1336 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu]\n",
1337 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1338 fprintf(ctx->fd, "{currentfile line readhexstring pop} bind\n");
1339 fprintf(ctx->fd, "false %d colorimage\n", nc);
1343 PSColorSeparatePreamble(TIFF2PSContext* ctx, uint32 w, uint32 h, int nc)
1347 PhotoshopBanner(ctx, w, h, ctx->ps_bytesperrow, nc, "true %d colorimage");
1348 for (i = 0; i < nc; i++)
1349 fprintf(ctx->fd, "/line%d %ld string def\n",
1350 i, (long) ctx->ps_bytesperrow);
1351 fprintf(ctx->fd, "%lu %lu %d\n",
1352 (unsigned long) w, (unsigned long) h, ctx->bitspersample);
1353 fprintf(ctx->fd, "[%lu 0 0 -%lu 0 %lu] \n",
1354 (unsigned long) w, (unsigned long) h, (unsigned long) h);
1355 for (i = 0; i < nc; i++)
1356 fprintf(ctx->fd, "{currentfile line%d readhexstring pop}bind\n", i);
1357 fprintf(ctx->fd, "true %d colorimage\n", nc);
1360 #define DOBREAK(len, howmany, fd) \
1361 if (((len) -= (howmany)) <= 0) { \
1363 (len) = MAXLINE-(howmany); \
1365 #define PUTHEX(c,fd) putc(hex[((c)>>4)&0xf],fd); putc(hex[(c)&0xf],fd)
1368 PSDataColorContig(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h, int nc)
1371 int breaklen = MAXLINE, cc, es = ctx->samplesperpixel - nc;
1372 unsigned char *tf_buf;
1373 unsigned char *cp, c;
1376 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1377 if (tf_buf == NULL) {
1378 TIFFError(ctx->filename, "No space for scanline buffer");
1381 for (row = 0; row < h; row++) {
1382 if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
1388 for (; cc < ctx->tf_bytesperrow; cc += ctx->samplesperpixel) {
1389 DOBREAK(breaklen, nc, ctx->fd);
1391 * For images with ctx->alpha, matte against
1392 * a white background; i.e.
1393 * Cback * (1 - Aimage)
1396 adjust = 255 - cp[nc];
1398 case 4: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1399 case 3: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1400 case 2: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1401 case 1: c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1407 for (; cc < ctx->tf_bytesperrow; cc += ctx->samplesperpixel) {
1408 DOBREAK(breaklen, nc, ctx->fd);
1410 case 4: c = *cp++; PUTHEX(c,ctx->fd);
1411 case 3: c = *cp++; PUTHEX(c,ctx->fd);
1412 case 2: c = *cp++; PUTHEX(c,ctx->fd);
1413 case 1: c = *cp++; PUTHEX(c,ctx->fd);
1419 _TIFFfree((char *) tf_buf);
1423 PSDataColorSeparate(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h, int nc)
1426 int breaklen = MAXLINE, cc;
1428 unsigned char *tf_buf;
1429 unsigned char *cp, c;
1432 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1433 if (tf_buf == NULL) {
1434 TIFFError(ctx->filename, "No space for scanline buffer");
1437 maxs = (ctx->samplesperpixel > nc ? nc : ctx->samplesperpixel);
1438 for (row = 0; row < h; row++) {
1439 for (s = 0; s < maxs; s++) {
1440 if (TIFFReadScanline(tif, tf_buf, row, s) < 0)
1442 for (cp = tf_buf, cc = 0; cc < ctx->tf_bytesperrow; cc++) {
1443 DOBREAK(breaklen, 1, ctx->fd);
1449 _TIFFfree((char *) tf_buf);
1452 #define PUTRGBHEX(c,fd) \
1453 PUTHEX(rmap[c],fd); PUTHEX(gmap[c],fd); PUTHEX(bmap[c],fd)
1456 PSDataPalette(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1458 uint16 *rmap, *gmap, *bmap;
1460 int breaklen = MAXLINE, cc, nc;
1461 unsigned char *tf_buf;
1462 unsigned char *cp, c;
1465 if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
1466 TIFFError(ctx->filename, "Palette image w/o \"Colormap\" tag");
1469 switch (ctx->bitspersample) {
1470 case 8: case 4: case 2: case 1:
1473 TIFFError(ctx->filename, "Depth %d not supported", ctx->bitspersample);
1476 nc = 3 * (8 / ctx->bitspersample);
1477 tf_buf = (unsigned char *) _TIFFmalloc(ctx->tf_bytesperrow);
1478 if (tf_buf == NULL) {
1479 TIFFError(ctx->filename, "No space for scanline buffer");
1482 if (checkcmap(ctx, tif, 1<<ctx->bitspersample, rmap, gmap, bmap) == 16) {
1484 #define CVT(x) ((unsigned short) (((x) * 255) / ((1U<<16)-1)))
1485 for (i = (1<<ctx->bitspersample)-1; i >= 0; i--) {
1486 rmap[i] = CVT(rmap[i]);
1487 gmap[i] = CVT(gmap[i]);
1488 bmap[i] = CVT(bmap[i]);
1492 for (row = 0; row < h; row++) {
1493 if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
1495 for (cp = tf_buf, cc = 0; cc < ctx->tf_bytesperrow; cc++) {
1496 DOBREAK(breaklen, nc, ctx->fd);
1497 switch (ctx->bitspersample) {
1499 c = *cp++; PUTRGBHEX(c, ctx->fd);
1502 c = *cp++; PUTRGBHEX(c&0xf, ctx->fd);
1503 c >>= 4; PUTRGBHEX(c, ctx->fd);
1506 c = *cp++; PUTRGBHEX(c&0x3, ctx->fd);
1507 c >>= 2; PUTRGBHEX(c&0x3, ctx->fd);
1508 c >>= 2; PUTRGBHEX(c&0x3, ctx->fd);
1509 c >>= 2; PUTRGBHEX(c, ctx->fd);
1512 c = *cp++; PUTRGBHEX(c&0x1, ctx->fd);
1513 c >>= 1; 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, ctx->fd);
1524 _TIFFfree((char *) tf_buf);
1528 PSDataBW(TIFF2PSContext* ctx, TIFF* tif, uint32 w, uint32 h)
1530 int breaklen = MAXLINE;
1531 unsigned char* tf_buf;
1533 tsize_t stripsize = TIFFStripSize(tif);
1536 #if defined( EXP_ASCII85ENCODER )
1537 int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
1538 uint8 *ascii85_p = 0; /* Holds ASCII85 encoded data */
1542 tf_buf = (unsigned char *) _TIFFmalloc(stripsize);
1543 memset(tf_buf, 0, stripsize);
1544 if (tf_buf == NULL) {
1545 TIFFError(ctx->filename, "No space for scanline buffer");
1549 #if defined( EXP_ASCII85ENCODER )
1550 if ( ctx->ascii85 ) {
1552 * Allocate a buffer to hold the ASCII85 encoded data. Note
1553 * that it is allocated with sufficient room to hold the
1554 * encoded data (5*stripsize/4) plus the EOD marker (+8)
1555 * and formatting line breaks. The line breaks are more
1556 * than taken care of by using 6*stripsize/4 rather than
1560 ascii85_p = _TIFFmalloc( (stripsize+(stripsize/2)) + 8 );
1563 _TIFFfree( tf_buf );
1565 TIFFError( ctx->filename,
1566 "Cannot allocate ASCII85 encoding buffer." );
1575 for (s = 0; s < TIFFNumberOfStrips(tif); s++) {
1576 int cc = TIFFReadEncodedStrip(tif, s, tf_buf, stripsize);
1578 TIFFError(ctx->filename, "Can't read strip");
1582 if (ctx->photometric == PHOTOMETRIC_MINISWHITE) {
1583 for (cp += cc; --cp >= tf_buf;)
1588 #if defined( EXP_ASCII85ENCODER )
1591 for (i = 0; i < cc; i+=2) {
1592 adjust = 255 - cp[i + 1];
1593 cp[i / 2] = cp[i] + adjust;
1598 ascii85_l = Ascii85EncodeBlock(ctx, ascii85_p, 1, cp,
1601 if ( ascii85_l > 0 )
1602 fwrite( ascii85_p, ascii85_l, 1, ctx->fd );
1605 Ascii85Put(ctx, *cp++);
1606 #endif /* EXP_ASCII85_ENCODER */
1613 DOBREAK(breaklen, 1, ctx->fd);
1615 * For images with ctx->alpha, matte against
1616 * a white background; i.e.
1617 * Cback * (1 - Aimage)
1620 adjust = 255 - cp[1];
1621 c = *cp++ + adjust; PUTHEX(c,ctx->fd);
1627 DOBREAK(breaklen, 1, ctx->fd);
1634 if ( !ctx->ascii85 )
1636 if ( ctx->level2 || ctx->level3)
1637 fputs(">\n", ctx->fd);
1639 #if !defined( EXP_ASCII85ENCODER )
1644 _TIFFfree( ascii85_p );
1651 Ascii85Init(TIFF2PSContext *ctx)
1653 ctx->ascii85breaklen = 2*MAXLINE;
1654 ctx->ascii85count = 0;
1658 Ascii85Encode(unsigned char* raw, char *buf)
1662 word = (((raw[0]<<8)+raw[1])<<16) + (raw[2]<<8) + raw[3];
1667 q = word / (85L*85*85*85); /* actually only a byte */
1668 buf[0] = (char) (q + '!');
1670 word -= q * (85L*85*85*85); q = word / (85L*85*85);
1671 buf[1] = (char) (q + '!');
1673 word -= q * (85L*85*85); q = word / (85*85);
1674 buf[2] = (char) (q + '!');
1676 w1 = (uint16) (word - q*(85L*85));
1677 buf[3] = (char) ((w1 / 85) + '!');
1678 buf[4] = (char) ((w1 % 85) + '!');
1681 buf[0] = 'z', buf[1] = '\0';
1685 Ascii85Put(TIFF2PSContext *ctx, unsigned char code)
1687 ctx->ascii85buf[ctx->ascii85count++] = code;
1688 if (ctx->ascii85count >= 4) {
1693 for (n = ctx->ascii85count, p = ctx->ascii85buf;
1694 n >= 4; n -= 4, p += 4) {
1696 Ascii85Encode(p, buf);
1697 for (cp = buf; *cp; cp++) {
1699 if (--ctx->ascii85breaklen == 0) {
1700 putc('\n', ctx->fd);
1701 ctx->ascii85breaklen = 2*MAXLINE;
1705 _TIFFmemcpy(ctx->ascii85buf, p, n);
1706 ctx->ascii85count = n;
1711 Ascii85Flush(TIFF2PSContext* ctx)
1713 if (ctx->ascii85count > 0) {
1715 _TIFFmemset(&ctx->ascii85buf[ctx->ascii85count], 0, 3);
1716 Ascii85Encode(ctx->ascii85buf, res);
1717 fwrite(res[0] == 'z' ? "!!!!" : res, ctx->ascii85count + 1, 1, ctx->fd);
1719 fputs("~>\n", ctx->fd);
1721 #if defined( EXP_ASCII85ENCODER)
1723 #define A85BREAKCNTR ctx->ascii85breaklen
1724 #define A85BREAKLEN (2*MAXLINE)
1726 /*****************************************************************************
1728 * Name: Ascii85EncodeBlock( ascii85_p, f_eod, raw_p, raw_l )
1730 * Description: This routine will encode the raw data in the buffer described
1731 * by raw_p and raw_l into ASCII85 format and store the encoding
1732 * in the buffer given by ascii85_p.
1734 * Parameters: ctx - TIFF2PS context
1735 * ascii85_p - A buffer supplied by the caller which will
1736 * contain the encoded ASCII85 data.
1737 * f_eod - Flag: Nz means to end the encoded buffer with
1738 * an End-Of-Data marker.
1739 * raw_p - Pointer to the buffer of data to be encoded
1740 * raw_l - Number of bytes in raw_p[] to be encoded
1742 * Returns: (int) < 0 Error, see errno
1743 * >= 0 Number of bytes written to ascii85_p[].
1745 * Notes: An external variable given by A85BREAKCNTR is used to
1746 * determine when to insert newline characters into the
1747 * encoded data. As each byte is placed into ascii85_p this
1748 * external is decremented. If the variable is decrement to
1749 * or past zero then a newline is inserted into ascii85_p
1750 * and the A85BREAKCNTR is then reset to A85BREAKLEN.
1751 * Note: for efficiency reasons the A85BREAKCNTR variable
1752 * is not actually checked on *every* character
1753 * placed into ascii85_p but often only for every
1756 * THE CALLER IS RESPONSIBLE FOR ENSURING THAT ASCII85_P[] IS
1757 * SUFFICIENTLY LARGE TO THE ENCODED DATA!
1758 * You will need at least 5 * (raw_l/4) bytes plus space for
1759 * newline characters and space for an EOD marker (if
1760 * requested). A safe calculation is to use 6*(raw_l/4) + 8
1761 * to size ascii85_p.
1763 *****************************************************************************/
1765 int Ascii85EncodeBlock( TIFF2PSContext *ctx, uint8 * ascii85_p,
1766 unsigned f_eod, const uint8 * raw_p, int raw_l )
1769 char ascii85[5]; /* Encoded 5 tuple */
1770 int ascii85_l; /* Number of bytes written to ascii85_p[] */
1771 int rc; /* Return code */
1772 uint32 val32; /* Unencoded 4 tuple */
1774 ascii85_l = 0; /* Nothing written yet */
1778 --raw_p; /* Prepare for pre-increment fetches */
1780 for ( ; raw_l > 3; raw_l -= 4 )
1782 val32 = *(++raw_p) << 24;
1783 val32 += *(++raw_p) << 16;
1784 val32 += *(++raw_p) << 8;
1785 val32 += *(++raw_p);
1787 if ( val32 == 0 ) /* Special case */
1789 ascii85_p[ascii85_l] = 'z';
1795 ascii85[4] = (char) ((val32 % 85) + 33);
1798 ascii85[3] = (char) ((val32 % 85) + 33);
1801 ascii85[2] = (char) ((val32 % 85) + 33);
1804 ascii85[1] = (char) ((val32 % 85) + 33);
1805 ascii85[0] = (char) ((val32 / 85) + 33);
1807 _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, sizeof(ascii85) );
1808 rc = sizeof(ascii85);
1813 if ( (A85BREAKCNTR -= rc) <= 0 )
1815 ascii85_p[ascii85_l] = '\n';
1817 A85BREAKCNTR = A85BREAKLEN;
1822 * Output any straggler bytes:
1827 int len; /* Output this many bytes */
1830 val32 = *++raw_p << 24; /* Prime the pump */
1832 if ( --raw_l > 0 ) val32 += *(++raw_p) << 16;
1833 if ( --raw_l > 0 ) val32 += *(++raw_p) << 8;
1837 ascii85[3] = (char) ((val32 % 85) + 33);
1840 ascii85[2] = (char) ((val32 % 85) + 33);
1843 ascii85[1] = (char) ((val32 % 85) + 33);
1844 ascii85[0] = (char) ((val32 / 85) + 33);
1846 _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, len );
1852 * If requested add an ASCII85 End Of Data marker:
1857 ascii85_p[ascii85_l++] = '~';
1858 ascii85_p[ascii85_l++] = '>';
1859 ascii85_p[ascii85_l++] = '\n';
1862 return ( ascii85_l );
1864 } /* Ascii85EncodeBlock() */
1866 #endif /* EXP_ASCII85ENCODER */
1868 /* vim: set ts=8 sts=8 sw=8 noet: */