+++ /dev/null
-/* $Id$ */
-
-/*
- * Copyright (c) 1988-1997 Sam Leffler
- * Copyright (c) 1991-1997 Silicon Graphics, Inc.
- *
- * Permission to use, copy, modify, distribute, and sell this software and
- * its documentation for any purpose is hereby granted without fee, provided
- * that (i) the above copyright notices and this permission notice appear in
- * all copies of the software and related documentation, and (ii) the names of
- * Sam Leffler and Silicon Graphics may not be used in any advertising or
- * publicity relating to the software without the specific, prior written
- * permission of Sam Leffler and Silicon Graphics.
- *
- * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
- * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
- * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
- *
- * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
- * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
- * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
- * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
- * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
- * OF THIS SOFTWARE.
- */
-
-/*
- * Modified for use as Evince TIFF ps exporter by
- * Matthew S. Wilson <msw@rpath.com>
- * Modifications Copyright (C) 2005 rpath, Inc.
- *
- * FIXME: refactor to remove use of global variables
- */
-
-#include <stdio.h>
-#include <stdlib.h> /* for atof */
-#include <math.h>
-#include <time.h>
-#include <string.h>
-#include <unistd.h>
-
-#include "tiff2ps.h"
-
-/*
- * Revision history
- *
- * 2001-Mar-21
- * I (Bruce A. Mallett) added this revision history comment ;)
- *
- * Fixed PS_Lvl2page() code which outputs non-ASCII85 raw
- * data. Moved test for when to output a line break to
- * *after* the output of a character. This just serves
- * to fix an eye-nuisance where the first line of raw
- * data was one character shorter than subsequent lines.
- *
- * Added an experimental ASCII85 encoder which can be used
- * only when there is a single buffer of bytes to be encoded.
- * This version is much faster at encoding a straight-line
- * buffer of data because it can avoid alot of the loop
- * overhead of the byte-by-bye version. To use this version
- * you need to define EXP_ASCII85ENCODER (experimental ...).
- *
- * Added bug fix given by Michael Schmidt to PS_Lvl2page()
- * in which an end-of-data marker ('>') was not being output
- * when producing non-ASCII85 encoded PostScript Level 2
- * data.
- *
- * Fixed PS_Lvl2colorspace() so that it no longer assumes that
- * a TIFF having more than 2 planes is a CMYK. This routine
- * no longer looks at the samples per pixel but instead looks
- * at the "photometric" value. This change allows support of
- * CMYK TIFFs.
- *
- * Modified the PostScript L2 imaging loop so as to test if
- * the input stream is still open before attempting to do a
- * flushfile on it. This was done because some RIPs close
- * the stream after doing the image operation.
- *
- * Got rid of the realloc() being done inside a loop in the
- * PSRawDataBW() routine. The code now walks through the
- * byte-size array outside the loop to determine the largest
- * size memory block that will be needed.
- *
- * Added "-m" switch to ask tiff2ps to, where possible, use the
- * "imagemask" operator instead of the "image" operator.
- *
- * Added the "-i #" switch to allow interpolation to be disabled.
- *
- * Unrolled a loop or two to improve performance.
- */
-
-/*
- * Define EXP_ASCII85ENCODER if you want to use an experimental
- * version of the ASCII85 encoding routine. The advantage of
- * using this routine is that tiff2ps will convert to ASCII85
- * encoding at between 3 and 4 times the speed as compared to
- * using the old (non-experimental) encoder. The disadvantage
- * is that you will be using a new (and unproven) encoding
- * routine. So user beware, you have been warned!
- */
-
-#define EXP_ASCII85ENCODER
-
-/*
- * NB: this code assumes uint32 works with printf's %l[ud].
- */
-#ifndef TRUE
-#define TRUE 1
-#define FALSE 0
-#endif
-
-static int ascii85 = FALSE; /* use ASCII85 encoding */
-static int interpolate = TRUE; /* interpolate level2 image */
-static int level2 = FALSE; /* generate PostScript level 2 */
-static int level3 = FALSE; /* generate PostScript level 3 */
-static int printAll = FALSE; /* print all images in file */
-static int generateEPSF = FALSE; /* generate Encapsulated PostScript */
-static int PSduplex = FALSE; /* enable duplex printing */
-static int PStumble = FALSE; /* enable top edge binding */
-static int PSavoiddeadzone = TRUE; /* enable avoiding printer deadzone */
-static double maxPageHeight = 0; /* maximum size to fit on page */
-static double splitOverlap = 0; /* amount for split pages to overlag */
-static int rotate = FALSE; /* rotate image by 180 degrees */
-static char *filename = NULL; /* input filename */
-static int useImagemask = FALSE; /* Use imagemask instead of image operator */
-static uint16 res_unit = 0; /* Resolution units: 2 - inches, 3 - cm */
-
-/*
- * ASCII85 Encoding Support.
- */
-static unsigned char ascii85buf[10];
-static int ascii85count;
-static int ascii85breaklen;
-
-static void PSpage(FILE*, TIFF*, uint32, uint32);
-static void PSColorContigPreamble(FILE*, uint32, uint32, int);
-static void PSColorSeparatePreamble(FILE*, uint32, uint32, int);
-static void PSDataColorContig(FILE*, TIFF*, uint32, uint32, int);
-static void PSDataColorSeparate(FILE*, TIFF*, uint32, uint32, int);
-static void PSDataPalette(FILE*, TIFF*, uint32, uint32);
-static void PSDataBW(FILE*, TIFF*, uint32, uint32);
-static void Ascii85Init(void);
-static void Ascii85Put(unsigned char code, FILE* fd);
-static void Ascii85Flush(FILE* fd);
-static void PSHead(FILE*, TIFF*, uint32, uint32, double, double, double, double);
-
-#if defined( EXP_ASCII85ENCODER)
-static int Ascii85EncodeBlock( uint8 * ascii85_p, unsigned f_eod, const uint8 * raw_p, int raw_l );
-#endif
-
-static uint16 samplesperpixel;
-static uint16 bitspersample;
-static uint16 planarconfiguration;
-static uint16 photometric;
-static uint16 compression;
-static uint16 extrasamples;
-static int alpha;
-
-static int
-checkImage(TIFF* tif)
-{
- switch (photometric) {
- case PHOTOMETRIC_YCBCR:
- if ((compression == COMPRESSION_JPEG || compression == COMPRESSION_OJPEG)
- && planarconfiguration == PLANARCONFIG_CONTIG) {
- /* can rely on libjpeg to convert to RGB */
- TIFFSetField(tif, TIFFTAG_JPEGCOLORMODE,
- JPEGCOLORMODE_RGB);
- photometric = PHOTOMETRIC_RGB;
- } else {
- if (level2 || level3)
- break;
- TIFFError(filename, "Can not handle image with %s",
- "PhotometricInterpretation=YCbCr");
- return (0);
- }
- /* fall thru... */
- case PHOTOMETRIC_RGB:
- if (alpha && bitspersample != 8) {
- TIFFError(filename,
- "Can not handle %d-bit/sample RGB image with alpha",
- bitspersample);
- return (0);
- }
- /* fall thru... */
- case PHOTOMETRIC_SEPARATED:
- case PHOTOMETRIC_PALETTE:
- case PHOTOMETRIC_MINISBLACK:
- case PHOTOMETRIC_MINISWHITE:
- break;
- case PHOTOMETRIC_LOGL:
- case PHOTOMETRIC_LOGLUV:
- if (compression != COMPRESSION_SGILOG &&
- compression != COMPRESSION_SGILOG24) {
- TIFFError(filename,
- "Can not handle %s data with compression other than SGILog",
- (photometric == PHOTOMETRIC_LOGL) ?
- "LogL" : "LogLuv"
- );
- return (0);
- }
- /* rely on library to convert to RGB/greyscale */
- TIFFSetField(tif, TIFFTAG_SGILOGDATAFMT, SGILOGDATAFMT_8BIT);
- photometric = (photometric == PHOTOMETRIC_LOGL) ?
- PHOTOMETRIC_MINISBLACK : PHOTOMETRIC_RGB;
- bitspersample = 8;
- break;
- case PHOTOMETRIC_CIELAB:
- /* fall thru... */
- default:
- TIFFError(filename,
- "Can not handle image with PhotometricInterpretation=%d",
- photometric);
- return (0);
- }
- switch (bitspersample) {
- case 1: case 2:
- case 4: case 8:
- break;
- default:
- TIFFError(filename, "Can not handle %d-bit/sample image",
- bitspersample);
- return (0);
- }
- if (planarconfiguration == PLANARCONFIG_SEPARATE && extrasamples > 0)
- TIFFWarning(filename, "Ignoring extra samples");
- return (1);
-}
-
-#define PS_UNIT_SIZE 72.0F
-#define PSUNITS(npix,res) ((npix) * (PS_UNIT_SIZE / (res)))
-
-static char RGBcolorimage[] = "\
-/bwproc {\n\
- rgbproc\n\
- dup length 3 idiv string 0 3 0\n\
- 5 -1 roll {\n\
- add 2 1 roll 1 sub dup 0 eq {\n\
- pop 3 idiv\n\
- 3 -1 roll\n\
- dup 4 -1 roll\n\
- dup 3 1 roll\n\
- 5 -1 roll put\n\
- 1 add 3 0\n\
- } { 2 1 roll } ifelse\n\
- } forall\n\
- pop pop pop\n\
-} def\n\
-/colorimage where {pop} {\n\
- /colorimage {pop pop /rgbproc exch def {bwproc} image} bind def\n\
-} ifelse\n\
-";
-
-/*
- * Adobe Photoshop requires a comment line of the form:
- *
- * %ImageData: <cols> <rows> <depth> <main channels> <pad channels>
- * <block size> <1 for binary|2 for hex> "data start"
- *
- * It is claimed to be part of some future revision of the EPS spec.
- */
-static void
-PhotoshopBanner(FILE* fd, uint32 w, uint32 h, int bs, int nc, char* startline)
-{
- fprintf(fd, "%%ImageData: %ld %ld %d %d 0 %d 2 \"",
- (long) w, (long) h, bitspersample, nc, bs);
- fprintf(fd, startline, nc);
- fprintf(fd, "\"\n");
-}
-
-/*
- * pw : image width in pixels
- * ph : image height in pixels
- * pprw : image width in PS units (72 dpi)
- * pprh : image height in PS units (72 dpi)
- */
-static void
-setupPageState(TIFF* tif, uint32* pw, uint32* ph, double* pprw, double* pprh)
-{
- float xres = 0.0F, yres = 0.0F;
-
- TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, pw);
- TIFFGetField(tif, TIFFTAG_IMAGELENGTH, ph);
- if (res_unit == 0)
- TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &res_unit);
- /*
- * Calculate printable area.
- */
- if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres)
- || fabs(xres) < 0.0000001)
- xres = PS_UNIT_SIZE;
- if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres)
- || fabs(yres) < 0.0000001)
- yres = PS_UNIT_SIZE;
- switch (res_unit) {
- case RESUNIT_CENTIMETER:
- xres *= 2.54F, yres *= 2.54F;
- break;
- case RESUNIT_INCH:
- break;
- case RESUNIT_NONE:
- default:
- xres *= PS_UNIT_SIZE, yres *= PS_UNIT_SIZE;
- break;
- }
- *pprh = PSUNITS(*ph, yres);
- *pprw = PSUNITS(*pw, xres);
-}
-
-static int
-isCCITTCompression(TIFF* tif)
-{
- uint16 compress;
- TIFFGetField(tif, TIFFTAG_COMPRESSION, &compress);
- return (compress == COMPRESSION_CCITTFAX3 ||
- compress == COMPRESSION_CCITTFAX4 ||
- compress == COMPRESSION_CCITTRLE ||
- compress == COMPRESSION_CCITTRLEW);
-}
-
-static tsize_t tf_bytesperrow;
-static tsize_t ps_bytesperrow;
-static tsize_t tf_rowsperstrip;
-static tsize_t tf_numberstrips;
-static char *hex = "0123456789abcdef";
-
-/*
- * imagewidth & imageheight are 1/72 inches
- * pagewidth & pageheight are inches
- */
-static int
-PlaceImage(FILE *fp, double pagewidth, double pageheight,
- double imagewidth, double imageheight, int splitpage,
- double lm, double bm, int cnt)
-{
- double xtran = 0;
- double ytran = 0;
- double xscale = 1;
- double yscale = 1;
- double left_offset = lm * PS_UNIT_SIZE;
- double bottom_offset = bm * PS_UNIT_SIZE;
- double subimageheight;
- double splitheight;
- double overlap;
-
- pagewidth *= PS_UNIT_SIZE;
- pageheight *= PS_UNIT_SIZE;
-
- if (maxPageHeight==0)
- splitheight = 0;
- else
- splitheight = maxPageHeight * PS_UNIT_SIZE;
- overlap = splitOverlap * PS_UNIT_SIZE;
-
- /*
- * WIDTH:
- * if too wide, scrunch to fit
- * else leave it alone
- */
- if (imagewidth <= pagewidth) {
- xscale = imagewidth;
- } else {
- xscale = pagewidth;
- }
-
- /* HEIGHT:
- * if too long, scrunch to fit
- * if too short, move to top of page
- */
- if (imageheight <= pageheight) {
- yscale = imageheight;
- ytran = pageheight - imageheight;
- } else if (imageheight > pageheight &&
- (splitheight == 0 || imageheight <= splitheight)) {
- yscale = pageheight;
- } else /* imageheight > splitheight */ {
- subimageheight = imageheight - (pageheight-overlap)*splitpage;
- if (subimageheight <= pageheight) {
- yscale = imageheight;
- ytran = pageheight - subimageheight;
- splitpage = 0;
- } else if ( subimageheight > pageheight && subimageheight <= splitheight) {
- yscale = imageheight * pageheight / subimageheight;
- ytran = 0;
- splitpage = 0;
- } else /* sumimageheight > splitheight */ {
- yscale = imageheight;
- ytran = pageheight - subimageheight;
- splitpage++;
- }
- }
-
- bottom_offset += ytran / (cnt?2:1);
- if (cnt)
- left_offset += xtran / 2;
- fprintf(fp, "%f %f translate\n", left_offset, bottom_offset);
- fprintf(fp, "%f %f scale\n", xscale, yscale);
- if (rotate)
- fputs ("1 1 translate 180 rotate\n", fp);
-
- return splitpage;
-}
-
-
-void
-TIFF2PS(FILE* fd, TIFF* tif,
- double pw, double ph, double lm, double bm, int cnt, int *npages)
-{
- uint32 w, h;
- float ox, oy;
- double prw, prh;
- double scale = 1.0;
- double left_offset = lm * PS_UNIT_SIZE;
- double bottom_offset = bm * PS_UNIT_SIZE;
- uint32 subfiletype;
- uint16* sampleinfo;
- int split;
-
- if (!TIFFGetField(tif, TIFFTAG_XPOSITION, &ox))
- ox = 0;
- if (!TIFFGetField(tif, TIFFTAG_YPOSITION, &oy))
- oy = 0;
- setupPageState(tif, &w, &h, &prw, &prh);
-
- do {
- tf_numberstrips = TIFFNumberOfStrips(tif);
- TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP,
- &tf_rowsperstrip);
- setupPageState(tif, &w, &h, &prw, &prh);
- if (!*npages)
- PSHead(fd, tif, w, h, prw, prh, ox, oy);
- TIFFGetFieldDefaulted(tif, TIFFTAG_BITSPERSAMPLE,
- &bitspersample);
- TIFFGetFieldDefaulted(tif, TIFFTAG_SAMPLESPERPIXEL,
- &samplesperpixel);
- TIFFGetFieldDefaulted(tif, TIFFTAG_PLANARCONFIG,
- &planarconfiguration);
- TIFFGetField(tif, TIFFTAG_COMPRESSION, &compression);
- TIFFGetFieldDefaulted(tif, TIFFTAG_EXTRASAMPLES,
- &extrasamples, &sampleinfo);
- alpha = (extrasamples == 1 &&
- sampleinfo[0] == EXTRASAMPLE_ASSOCALPHA);
- if (!TIFFGetField(tif, TIFFTAG_PHOTOMETRIC, &photometric)) {
- switch (samplesperpixel - extrasamples) {
- case 1:
- if (isCCITTCompression(tif))
- photometric = PHOTOMETRIC_MINISWHITE;
- else
- photometric = PHOTOMETRIC_MINISBLACK;
- break;
- case 3:
- photometric = PHOTOMETRIC_RGB;
- break;
- case 4:
- photometric = PHOTOMETRIC_SEPARATED;
- break;
- }
- }
- if (checkImage(tif)) {
- tf_bytesperrow = TIFFScanlineSize(tif);
- *npages = *npages + 1;
- fprintf(fd, "%%%%Page: %d %d\n", *npages, *npages);
- if (!generateEPSF && ( level2 || level3 )) {
- double psw = 0.0, psh = 0.0;
- if (psw != 0.0) {
- psw = pw * PS_UNIT_SIZE;
- if (res_unit == RESUNIT_CENTIMETER)
- psw *= 2.54F;
- } else
- psw=rotate ? prh:prw;
- if (psh != 0.0) {
- psh = ph * PS_UNIT_SIZE;
- if (res_unit == RESUNIT_CENTIMETER)
- psh *= 2.54F;
- } else
- psh=rotate ? prw:prh;
- fprintf(fd,
- "1 dict begin /PageSize [ %f %f ] def currentdict end setpagedevice\n",
- psw, psh);
- fputs(
- "<<\n /Policies <<\n /PageSize 3\n >>\n>> setpagedevice\n",
- fd);
- }
- fprintf(fd, "gsave\n");
- fprintf(fd, "100 dict begin\n");
- if (pw != 0 || ph != 0) {
- if (!pw)
- pw = prw;
- if (!ph)
- ph = prh;
- if (maxPageHeight) { /* used -H option */
- split = PlaceImage(fd,pw,ph,prw,prh,
- 0,lm,bm,cnt);
- while( split ) {
- PSpage(fd, tif, w, h);
- fprintf(fd, "end\n");
- fprintf(fd, "grestore\n");
- fprintf(fd, "showpage\n");
- *npages = *npages + 1;
- fprintf(fd, "%%%%Page: %d %d\n",
- *npages, *npages);
- fprintf(fd, "gsave\n");
- fprintf(fd, "100 dict begin\n");
- split = PlaceImage(fd,pw,ph,prw,prh,
- split,lm,bm,cnt);
- }
- } else {
- pw *= PS_UNIT_SIZE;
- ph *= PS_UNIT_SIZE;
-
- /* NB: maintain image aspect ratio */
- scale = pw/prw < ph/prh ?
- pw/prw : ph/prh;
- if (scale > 1.0)
- scale = 1.0;
- if (cnt) {
- bottom_offset +=
- (ph - prh * scale) / 2;
- left_offset +=
- (pw - prw * scale) / 2;
- }
- fprintf(fd, "%f %f translate\n",
- left_offset, bottom_offset);
- fprintf(fd, "%f %f scale\n",
- prw * scale, prh * scale);
- if (rotate)
- fputs ("1 1 translate 180 rotate\n", fd);
- }
- } else {
- fprintf(fd, "%f %f scale\n", prw, prh);
- if (rotate)
- fputs ("1 1 translate 180 rotate\n", fd);
- }
- PSpage(fd, tif, w, h);
- fprintf(fd, "end\n");
- fprintf(fd, "grestore\n");
- fprintf(fd, "showpage\n");
- }
- if (generateEPSF)
- break;
- TIFFGetFieldDefaulted(tif, TIFFTAG_SUBFILETYPE, &subfiletype);
- } while (((subfiletype & FILETYPE_PAGE) || printAll) &&
- TIFFReadDirectory(tif));
-}
-
-
-static char DuplexPreamble[] = "\
-%%BeginFeature: *Duplex True\n\
-systemdict begin\n\
- /languagelevel where { pop languagelevel } { 1 } ifelse\n\
- 2 ge { 1 dict dup /Duplex true put setpagedevice }\n\
- { statusdict /setduplex known { statusdict begin setduplex true end } if\n\
- } ifelse\n\
-end\n\
-%%EndFeature\n\
-";
-
-static char TumblePreamble[] = "\
-%%BeginFeature: *Tumble True\n\
-systemdict begin\n\
- /languagelevel where { pop languagelevel } { 1 } ifelse\n\
- 2 ge { 1 dict dup /Tumble true put setpagedevice }\n\
- { statusdict /settumble known { statusdict begin true settumble end } if\n\
- } ifelse\n\
-end\n\
-%%EndFeature\n\
-";
-
-static char AvoidDeadZonePreamble[] = "\
-gsave newpath clippath pathbbox grestore\n\
- 4 2 roll 2 copy translate\n\
- exch 3 1 roll sub 3 1 roll sub exch\n\
- currentpagedevice /PageSize get aload pop\n\
- exch 3 1 roll div 3 1 roll div abs exch abs\n\
- 2 copy gt { exch } if pop\n\
- dup 1 lt { dup scale } { pop } ifelse\n\
-";
-
-void
-PSHead(FILE *fd, TIFF *tif, uint32 w, uint32 h,
- double pw, double ph, double ox, double oy)
-{
- time_t t;
-
- (void) tif; (void) w; (void) h;
- t = time(0);
- fprintf(fd, "%%!PS-Adobe-3.0%s\n", generateEPSF ? " EPSF-3.0" : "");
- fprintf(fd, "%%%%Creator: Evince\n");
- fprintf(fd, "%%%%CreationDate: %s", ctime(&t));
- fprintf(fd, "%%%%DocumentData: Clean7Bit\n");
- fprintf(fd, "%%%%Origin: %ld %ld\n", (long) ox, (long) oy);
- /* NB: should use PageBoundingBox */
- fprintf(fd, "%%%%BoundingBox: 0 0 %ld %ld\n",
- (long) ceil(pw), (long) ceil(ph));
- fprintf(fd, "%%%%LanguageLevel: %d\n", (level3 ? 3 : (level2 ? 2 : 1)));
- fprintf(fd, "%%%%Pages: (atend)\n");
- fprintf(fd, "%%%%EndComments\n");
- fprintf(fd, "%%%%BeginSetup\n");
- if (PSduplex)
- fprintf(fd, "%s", DuplexPreamble);
- if (PStumble)
- fprintf(fd, "%s", TumblePreamble);
- if (PSavoiddeadzone && (level2 || level3))
- fprintf(fd, "%s", AvoidDeadZonePreamble);
- fprintf(fd, "%%%%EndSetup\n");
-}
-
-void
-TIFFPSTail(FILE *fd, int npages)
-{
- fprintf(fd, "%%%%Trailer\n");
- fprintf(fd, "%%%%Pages: %d\n", npages);
- fprintf(fd, "%%%%EOF\n");
-}
-
-static int
-checkcmap(TIFF* tif, int n, uint16* r, uint16* g, uint16* b)
-{
- (void) tif;
- while (n-- > 0)
- if (*r++ >= 256 || *g++ >= 256 || *b++ >= 256)
- return (16);
- TIFFWarning(filename, "Assuming 8-bit colormap");
- return (8);
-}
-
-static void
-PS_Lvl2colorspace(FILE* fd, TIFF* tif)
-{
- uint16 *rmap, *gmap, *bmap;
- int i, num_colors;
- const char * colorspace_p;
-
- switch ( photometric )
- {
- case PHOTOMETRIC_SEPARATED:
- colorspace_p = "CMYK";
- break;
-
- case PHOTOMETRIC_RGB:
- colorspace_p = "RGB";
- break;
-
- default:
- colorspace_p = "Gray";
- }
-
- /*
- * Set up PostScript Level 2 colorspace according to
- * section 4.8 in the PostScript refenence manual.
- */
- fputs("% PostScript Level 2 only.\n", fd);
- if (photometric != PHOTOMETRIC_PALETTE) {
- if (photometric == PHOTOMETRIC_YCBCR) {
- /* MORE CODE HERE */
- }
- fprintf(fd, "/Device%s setcolorspace\n", colorspace_p );
- return;
- }
-
- /*
- * Set up an indexed/palette colorspace
- */
- num_colors = (1 << bitspersample);
- if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
- TIFFError(filename,
- "Palette image w/o \"Colormap\" tag");
- return;
- }
- if (checkcmap(tif, num_colors, rmap, gmap, bmap) == 16) {
- /*
- * Convert colormap to 8-bits values.
- */
-#define CVT(x) (((x) * 255) / ((1L<<16)-1))
- for (i = 0; i < num_colors; i++) {
- rmap[i] = CVT(rmap[i]);
- gmap[i] = CVT(gmap[i]);
- bmap[i] = CVT(bmap[i]);
- }
-#undef CVT
- }
- fprintf(fd, "[ /Indexed /DeviceRGB %d", num_colors - 1);
- if (ascii85) {
- Ascii85Init();
- fputs("\n<~", fd);
- ascii85breaklen -= 2;
- } else
- fputs(" <", fd);
- for (i = 0; i < num_colors; i++) {
- if (ascii85) {
- Ascii85Put((unsigned char)rmap[i], fd);
- Ascii85Put((unsigned char)gmap[i], fd);
- Ascii85Put((unsigned char)bmap[i], fd);
- } else {
- fputs((i % 8) ? " " : "\n ", fd);
- fprintf(fd, "%02x%02x%02x",
- rmap[i], gmap[i], bmap[i]);
- }
- }
- if (ascii85)
- Ascii85Flush(fd);
- else
- fputs(">\n", fd);
- fputs("] setcolorspace\n", fd);
-}
-
-static int
-PS_Lvl2ImageDict(FILE* fd, TIFF* tif, uint32 w, uint32 h)
-{
- int use_rawdata;
- uint32 tile_width, tile_height;
- uint16 predictor, minsamplevalue, maxsamplevalue;
- int repeat_count;
- char im_h[64], im_x[64], im_y[64];
- char * imageOp = "image";
-
- if ( useImagemask && (bitspersample == 1) )
- imageOp = "imagemask";
-
- (void)strcpy(im_x, "0");
- (void)sprintf(im_y, "%lu", (long) h);
- (void)sprintf(im_h, "%lu", (long) h);
- tile_width = w;
- tile_height = h;
- if (TIFFIsTiled(tif)) {
- repeat_count = TIFFNumberOfTiles(tif);
- TIFFGetField(tif, TIFFTAG_TILEWIDTH, &tile_width);
- TIFFGetField(tif, TIFFTAG_TILELENGTH, &tile_height);
- if (tile_width > w || tile_height > h ||
- (w % tile_width) != 0 || (h % tile_height != 0)) {
- /*
- * The tiles does not fit image width and height.
- * Set up a clip rectangle for the image unit square.
- */
- fputs("0 0 1 1 rectclip\n", fd);
- }
- if (tile_width < w) {
- fputs("/im_x 0 def\n", fd);
- (void)strcpy(im_x, "im_x neg");
- }
- if (tile_height < h) {
- fputs("/im_y 0 def\n", fd);
- (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
- }
- } else {
- repeat_count = tf_numberstrips;
- tile_height = tf_rowsperstrip;
- if (tile_height > h)
- tile_height = h;
- if (repeat_count > 1) {
- fputs("/im_y 0 def\n", fd);
- fprintf(fd, "/im_h %lu def\n",
- (unsigned long) tile_height);
- (void)strcpy(im_h, "im_h");
- (void)sprintf(im_y, "%lu im_y sub", (unsigned long) h);
- }
- }
-
- /*
- * Output start of exec block
- */
- fputs("{ % exec\n", fd);
-
- if (repeat_count > 1)
- fprintf(fd, "%d { %% repeat\n", repeat_count);
-
- /*
- * Output filter options and image dictionary.
- */
- if (ascii85)
- fputs(" /im_stream currentfile /ASCII85Decode filter def\n",
- fd);
- fputs(" <<\n", fd);
- fputs(" /ImageType 1\n", fd);
- fprintf(fd, " /Width %lu\n", (unsigned long) tile_width);
- /*
- * Workaround for some software that may crash when last strip
- * of image contains fewer number of scanlines than specified
- * by the `/Height' variable. So for stripped images with multiple
- * strips we will set `/Height' as `im_h', because one is
- * recalculated for each strip - including the (smaller) final strip.
- * For tiled images and images with only one strip `/Height' will
- * contain number of scanlines in tile (or image height in case of
- * one-stripped image).
- */
- if (TIFFIsTiled(tif) || tf_numberstrips == 1)
- fprintf(fd, " /Height %lu\n", (unsigned long) tile_height);
- else
- fprintf(fd, " /Height im_h\n");
-
- if (planarconfiguration == PLANARCONFIG_SEPARATE && samplesperpixel > 1)
- fputs(" /MultipleDataSources true\n", fd);
- fprintf(fd, " /ImageMatrix [ %lu 0 0 %ld %s %s ]\n",
- (unsigned long) w, - (long)h, im_x, im_y);
- fprintf(fd, " /BitsPerComponent %d\n", bitspersample);
- fprintf(fd, " /Interpolate %s\n", interpolate ? "true" : "false");
-
- switch (samplesperpixel - extrasamples) {
- case 1:
- switch (photometric) {
- case PHOTOMETRIC_MINISBLACK:
- fputs(" /Decode [0 1]\n", fd);
- break;
- case PHOTOMETRIC_MINISWHITE:
- switch (compression) {
- case COMPRESSION_CCITTRLE:
- case COMPRESSION_CCITTRLEW:
- case COMPRESSION_CCITTFAX3:
- case COMPRESSION_CCITTFAX4:
- /*
- * Manage inverting with /Blackis1 flag
- * since there migth be uncompressed parts
- */
- fputs(" /Decode [0 1]\n", fd);
- break;
- default:
- /*
- * ERROR...
- */
- fputs(" /Decode [1 0]\n", fd);
- break;
- }
- break;
- case PHOTOMETRIC_PALETTE:
- TIFFGetFieldDefaulted(tif, TIFFTAG_MINSAMPLEVALUE,
- &minsamplevalue);
- TIFFGetFieldDefaulted(tif, TIFFTAG_MAXSAMPLEVALUE,
- &maxsamplevalue);
- fprintf(fd, " /Decode [%u %u]\n",
- minsamplevalue, maxsamplevalue);
- break;
- default:
- /*
- * ERROR ?
- */
- fputs(" /Decode [0 1]\n", fd);
- break;
- }
- break;
- case 3:
- switch (photometric) {
- case PHOTOMETRIC_RGB:
- fputs(" /Decode [0 1 0 1 0 1]\n", fd);
- break;
- case PHOTOMETRIC_MINISWHITE:
- case PHOTOMETRIC_MINISBLACK:
- default:
- /*
- * ERROR??
- */
- fputs(" /Decode [0 1 0 1 0 1]\n", fd);
- break;
- }
- break;
- case 4:
- /*
- * ERROR??
- */
- fputs(" /Decode [0 1 0 1 0 1 0 1]\n", fd);
- break;
- }
- fputs(" /DataSource", fd);
- if (planarconfiguration == PLANARCONFIG_SEPARATE &&
- samplesperpixel > 1)
- fputs(" [", fd);
- if (ascii85)
- fputs(" im_stream", fd);
- else
- fputs(" currentfile /ASCIIHexDecode filter", fd);
-
- use_rawdata = TRUE;
- switch (compression) {
- case COMPRESSION_NONE: /* 1: uncompressed */
- break;
- case COMPRESSION_CCITTRLE: /* 2: CCITT modified Huffman RLE */
- case COMPRESSION_CCITTRLEW: /* 32771: #1 w/ word alignment */
- case COMPRESSION_CCITTFAX3: /* 3: CCITT Group 3 fax encoding */
- case COMPRESSION_CCITTFAX4: /* 4: CCITT Group 4 fax encoding */
- fputs("\n\t<<\n", fd);
- if (compression == COMPRESSION_CCITTFAX3) {
- uint32 g3_options;
-
- fputs("\t /EndOfLine true\n", fd);
- fputs("\t /EndOfBlock false\n", fd);
- if (!TIFFGetField(tif, TIFFTAG_GROUP3OPTIONS,
- &g3_options))
- g3_options = 0;
- if (g3_options & GROUP3OPT_2DENCODING)
- fprintf(fd, "\t /K %s\n", im_h);
- if (g3_options & GROUP3OPT_UNCOMPRESSED)
- fputs("\t /Uncompressed true\n", fd);
- if (g3_options & GROUP3OPT_FILLBITS)
- fputs("\t /EncodedByteAlign true\n", fd);
- }
- if (compression == COMPRESSION_CCITTFAX4) {
- uint32 g4_options;
-
- fputs("\t /K -1\n", fd);
- TIFFGetFieldDefaulted(tif, TIFFTAG_GROUP4OPTIONS,
- &g4_options);
- if (g4_options & GROUP4OPT_UNCOMPRESSED)
- fputs("\t /Uncompressed true\n", fd);
- }
- if (!(tile_width == w && w == 1728U))
- fprintf(fd, "\t /Columns %lu\n",
- (unsigned long) tile_width);
- fprintf(fd, "\t /Rows %s\n", im_h);
- if (compression == COMPRESSION_CCITTRLE ||
- compression == COMPRESSION_CCITTRLEW) {
- fputs("\t /EncodedByteAlign true\n", fd);
- fputs("\t /EndOfBlock false\n", fd);
- }
- if (photometric == PHOTOMETRIC_MINISBLACK)
- fputs("\t /BlackIs1 true\n", fd);
- fprintf(fd, "\t>> /CCITTFaxDecode filter");
- break;
- case COMPRESSION_LZW: /* 5: Lempel-Ziv & Welch */
- TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
- if (predictor == 2) {
- fputs("\n\t<<\n", fd);
- fprintf(fd, "\t /Predictor %u\n", predictor);
- fprintf(fd, "\t /Columns %lu\n",
- (unsigned long) tile_width);
- fprintf(fd, "\t /Colors %u\n", samplesperpixel);
- fprintf(fd, "\t /BitsPerComponent %u\n",
- bitspersample);
- fputs("\t>>", fd);
- }
- fputs(" /LZWDecode filter", fd);
- break;
- case COMPRESSION_DEFLATE: /* 5: ZIP */
- case COMPRESSION_ADOBE_DEFLATE:
- if ( level3 ) {
- TIFFGetFieldDefaulted(tif, TIFFTAG_PREDICTOR, &predictor);
- if (predictor > 1) {
- fprintf(fd, "\t %% PostScript Level 3 only.");
- fputs("\n\t<<\n", fd);
- fprintf(fd, "\t /Predictor %u\n", predictor);
- fprintf(fd, "\t /Columns %lu\n",
- (unsigned long) tile_width);
- fprintf(fd, "\t /Colors %u\n", samplesperpixel);
- fprintf(fd, "\t /BitsPerComponent %u\n",
- bitspersample);
- fputs("\t>>", fd);
- }
- fputs(" /FlateDecode filter", fd);
- } else {
- use_rawdata = FALSE ;
- }
- break;
- case COMPRESSION_PACKBITS: /* 32773: Macintosh RLE */
- fputs(" /RunLengthDecode filter", fd);
- use_rawdata = TRUE;
- break;
- case COMPRESSION_OJPEG: /* 6: !6.0 JPEG */
- case COMPRESSION_JPEG: /* 7: %JPEG DCT compression */
-#ifdef notdef
- /*
- * Code not tested yet
- */
- fputs(" /DCTDecode filter", fd);
- use_rawdata = TRUE;
-#else
- use_rawdata = FALSE;
-#endif
- break;
- case COMPRESSION_NEXT: /* 32766: NeXT 2-bit RLE */
- case COMPRESSION_THUNDERSCAN: /* 32809: ThunderScan RLE */
- case COMPRESSION_PIXARFILM: /* 32908: Pixar companded 10bit LZW */
- case COMPRESSION_JBIG: /* 34661: ISO JBIG */
- use_rawdata = FALSE;
- break;
- case COMPRESSION_SGILOG: /* 34676: SGI LogL or LogLuv */
- case COMPRESSION_SGILOG24: /* 34677: SGI 24-bit LogLuv */
- use_rawdata = FALSE;
- break;
- default:
- /*
- * ERROR...
- */
- use_rawdata = FALSE;
- break;
- }
- if (planarconfiguration == PLANARCONFIG_SEPARATE &&
- samplesperpixel > 1) {
- uint16 i;
-
- /*
- * NOTE: This code does not work yet...
- */
- for (i = 1; i < samplesperpixel; i++)
- fputs(" dup", fd);
- fputs(" ]", fd);
- }
-
- fprintf( fd, "\n >> %s\n", imageOp );
- if (ascii85)
- fputs(" im_stream status { im_stream flushfile } if\n", fd);
- if (repeat_count > 1) {
- if (tile_width < w) {
- fprintf(fd, " /im_x im_x %lu add def\n",
- (unsigned long) tile_width);
- if (tile_height < h) {
- fprintf(fd, " im_x %lu ge {\n",
- (unsigned long) w);
- fputs(" /im_x 0 def\n", fd);
- fprintf(fd, " /im_y im_y %lu add def\n",
- (unsigned long) tile_height);
- fputs(" } if\n", fd);
- }
- }
- if (tile_height < h) {
- if (tile_width >= w) {
- fprintf(fd, " /im_y im_y %lu add def\n",
- (unsigned long) tile_height);
- if (!TIFFIsTiled(tif)) {
- fprintf(fd, " /im_h %lu im_y sub",
- (unsigned long) h);
- fprintf(fd, " dup %lu gt { pop",
- (unsigned long) tile_height);
- fprintf(fd, " %lu } if def\n",
- (unsigned long) tile_height);
- }
- }
- }
- fputs("} repeat\n", fd);
- }
- /*
- * End of exec function
- */
- fputs("}\n", fd);
-
- return(use_rawdata);
-}
-
-#define MAXLINE 36
-
-static int
-PS_Lvl2page(FILE* fd, TIFF* tif, uint32 w, uint32 h)
-{
- uint16 fillorder;
- int use_rawdata, tiled_image, breaklen = MAXLINE;
- uint32 chunk_no, num_chunks, *bc;
- unsigned char *buf_data, *cp;
- tsize_t chunk_size, byte_count;
-
-#if defined( EXP_ASCII85ENCODER )
- int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
- uint8 * ascii85_p = 0; /* Holds ASCII85 encoded data */
-#endif
-
- PS_Lvl2colorspace(fd, tif);
- use_rawdata = PS_Lvl2ImageDict(fd, tif, w, h);
-
-/* See http://bugzilla.remotesensing.org/show_bug.cgi?id=80 */
-#ifdef ENABLE_BROKEN_BEGINENDDATA
- fputs("%%BeginData:\n", fd);
-#endif
- fputs("exec\n", fd);
-
- tiled_image = TIFFIsTiled(tif);
- if (tiled_image) {
- num_chunks = TIFFNumberOfTiles(tif);
- TIFFGetField(tif, TIFFTAG_TILEBYTECOUNTS, &bc);
- } else {
- num_chunks = TIFFNumberOfStrips(tif);
- TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
- }
-
- if (use_rawdata) {
- chunk_size = (tsize_t) bc[0];
- for (chunk_no = 1; chunk_no < num_chunks; chunk_no++)
- if ((tsize_t) bc[chunk_no] > chunk_size)
- chunk_size = (tsize_t) bc[chunk_no];
- } else {
- if (tiled_image)
- chunk_size = TIFFTileSize(tif);
- else
- chunk_size = TIFFStripSize(tif);
- }
- buf_data = (unsigned char *)_TIFFmalloc(chunk_size);
- if (!buf_data) {
- TIFFError(filename, "Can't alloc %u bytes for %s.",
- chunk_size, tiled_image ? "tiles" : "strips");
- return(FALSE);
- }
-
-#if defined( EXP_ASCII85ENCODER )
- if ( ascii85 ) {
- /*
- * Allocate a buffer to hold the ASCII85 encoded data. Note
- * that it is allocated with sufficient room to hold the
- * encoded data (5*chunk_size/4) plus the EOD marker (+8)
- * and formatting line breaks. The line breaks are more
- * than taken care of by using 6*chunk_size/4 rather than
- * 5*chunk_size/4.
- */
-
- ascii85_p = _TIFFmalloc( (chunk_size+(chunk_size/2)) + 8 );
-
- if ( !ascii85_p ) {
- _TIFFfree( buf_data );
-
- TIFFError( filename, "Cannot allocate ASCII85 encoding buffer." );
- return ( FALSE );
- }
- }
-#endif
-
- TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
- for (chunk_no = 0; chunk_no < num_chunks; chunk_no++) {
- if (ascii85)
- Ascii85Init();
- else
- breaklen = MAXLINE;
- if (use_rawdata) {
- if (tiled_image)
- byte_count = TIFFReadRawTile(tif, chunk_no,
- buf_data, chunk_size);
- else
- byte_count = TIFFReadRawStrip(tif, chunk_no,
- buf_data, chunk_size);
- if (fillorder == FILLORDER_LSB2MSB)
- TIFFReverseBits(buf_data, byte_count);
- } else {
- if (tiled_image)
- byte_count = TIFFReadEncodedTile(tif,
- chunk_no, buf_data,
- chunk_size);
- else
- byte_count = TIFFReadEncodedStrip(tif,
- chunk_no, buf_data,
- chunk_size);
- }
- if (byte_count < 0) {
- TIFFError(filename, "Can't read %s %d.",
- tiled_image ? "tile" : "strip", chunk_no);
- if (ascii85)
- Ascii85Put('\0', fd);
- }
- /*
- * For images with alpha, matte against a white background;
- * i.e. Cback * (1 - Aimage) where Cback = 1. We will fill the
- * lower part of the buffer with the modified values.
- *
- * XXX: needs better solution
- */
- if (alpha) {
- int adjust, i, j = 0;
- int ncomps = samplesperpixel - extrasamples;
- for (i = 0; i < byte_count; i+=samplesperpixel) {
- adjust = 255 - buf_data[i + ncomps];
- switch (ncomps) {
- case 1:
- buf_data[j++] = buf_data[i] + adjust;
- break;
- case 2:
- buf_data[j++] = buf_data[i] + adjust;
- buf_data[j++] = buf_data[i+1] + adjust;
- break;
- case 3:
- buf_data[j++] = buf_data[i] + adjust;
- buf_data[j++] = buf_data[i+1] + adjust;
- buf_data[j++] = buf_data[i+2] + adjust;
- break;
- }
- }
- byte_count -= j;
- }
-
- if (ascii85) {
-#if defined( EXP_ASCII85ENCODER )
- ascii85_l = Ascii85EncodeBlock(ascii85_p, 1, buf_data, byte_count );
-
- if ( ascii85_l > 0 )
- fwrite( ascii85_p, ascii85_l, 1, fd );
-#else
- for (cp = buf_data; byte_count > 0; byte_count--)
- Ascii85Put(*cp++, fd);
-#endif
- }
- else
- {
- for (cp = buf_data; byte_count > 0; byte_count--) {
- putc(hex[((*cp)>>4)&0xf], fd);
- putc(hex[(*cp)&0xf], fd);
- cp++;
-
- if (--breaklen <= 0) {
- putc('\n', fd);
- breaklen = MAXLINE;
- }
- }
- }
-
- if ( !ascii85 ) {
- if ( level2 || level3 )
- putc( '>', fd );
- putc('\n', fd);
- }
-#if !defined( EXP_ASCII85ENCODER )
- else
- Ascii85Flush(fd);
-#endif
- }
-
-#if defined( EXP_ASCII85ENCODER )
- if ( ascii85_p )
- _TIFFfree( ascii85_p );
-#endif
- _TIFFfree(buf_data);
-#ifdef ENABLE_BROKEN_BEGINENDDATA
- fputs("%%EndData\n", fd);
-#endif
- return(TRUE);
-}
-
-void
-PSpage(FILE* fd, TIFF* tif, uint32 w, uint32 h)
-{
- char * imageOp = "image";
-
- if ( useImagemask && (bitspersample == 1) )
- imageOp = "imagemask";
-
- if ((level2 || level3) && PS_Lvl2page(fd, tif, w, h))
- return;
- ps_bytesperrow = tf_bytesperrow - (extrasamples * bitspersample / 8)*w;
- switch (photometric) {
- case PHOTOMETRIC_RGB:
- if (planarconfiguration == PLANARCONFIG_CONTIG) {
- fprintf(fd, "%s", RGBcolorimage);
- PSColorContigPreamble(fd, w, h, 3);
- PSDataColorContig(fd, tif, w, h, 3);
- } else {
- PSColorSeparatePreamble(fd, w, h, 3);
- PSDataColorSeparate(fd, tif, w, h, 3);
- }
- break;
- case PHOTOMETRIC_SEPARATED:
- /* XXX should emit CMYKcolorimage */
- if (planarconfiguration == PLANARCONFIG_CONTIG) {
- PSColorContigPreamble(fd, w, h, 4);
- PSDataColorContig(fd, tif, w, h, 4);
- } else {
- PSColorSeparatePreamble(fd, w, h, 4);
- PSDataColorSeparate(fd, tif, w, h, 4);
- }
- break;
- case PHOTOMETRIC_PALETTE:
- fprintf(fd, "%s", RGBcolorimage);
- PhotoshopBanner(fd, w, h, 1, 3, "false 3 colorimage");
- fprintf(fd, "/scanLine %ld string def\n",
- (long) ps_bytesperrow * 3L);
- fprintf(fd, "%lu %lu 8\n",
- (unsigned long) w, (unsigned long) h);
- fprintf(fd, "[%lu 0 0 -%lu 0 %lu]\n",
- (unsigned long) w, (unsigned long) h, (unsigned long) h);
- fprintf(fd, "{currentfile scanLine readhexstring pop} bind\n");
- fprintf(fd, "false 3 colorimage\n");
- PSDataPalette(fd, tif, w, h);
- break;
- case PHOTOMETRIC_MINISBLACK:
- case PHOTOMETRIC_MINISWHITE:
- PhotoshopBanner(fd, w, h, 1, 1, imageOp);
- fprintf(fd, "/scanLine %ld string def\n",
- (long) ps_bytesperrow);
- fprintf(fd, "%lu %lu %d\n",
- (unsigned long) w, (unsigned long) h, bitspersample);
- fprintf(fd, "[%lu 0 0 -%lu 0 %lu]\n",
- (unsigned long) w, (unsigned long) h, (unsigned long) h);
- fprintf(fd,
- "{currentfile scanLine readhexstring pop} bind\n");
- fprintf(fd, "%s\n", imageOp);
- PSDataBW(fd, tif, w, h);
- break;
- }
- putc('\n', fd);
-}
-
-void
-PSColorContigPreamble(FILE* fd, uint32 w, uint32 h, int nc)
-{
- ps_bytesperrow = nc * (tf_bytesperrow / samplesperpixel);
- PhotoshopBanner(fd, w, h, 1, nc, "false %d colorimage");
- fprintf(fd, "/line %ld string def\n", (long) ps_bytesperrow);
- fprintf(fd, "%lu %lu %d\n",
- (unsigned long) w, (unsigned long) h, bitspersample);
- fprintf(fd, "[%lu 0 0 -%lu 0 %lu]\n",
- (unsigned long) w, (unsigned long) h, (unsigned long) h);
- fprintf(fd, "{currentfile line readhexstring pop} bind\n");
- fprintf(fd, "false %d colorimage\n", nc);
-}
-
-void
-PSColorSeparatePreamble(FILE* fd, uint32 w, uint32 h, int nc)
-{
- int i;
-
- PhotoshopBanner(fd, w, h, ps_bytesperrow, nc, "true %d colorimage");
- for (i = 0; i < nc; i++)
- fprintf(fd, "/line%d %ld string def\n",
- i, (long) ps_bytesperrow);
- fprintf(fd, "%lu %lu %d\n",
- (unsigned long) w, (unsigned long) h, bitspersample);
- fprintf(fd, "[%lu 0 0 -%lu 0 %lu] \n",
- (unsigned long) w, (unsigned long) h, (unsigned long) h);
- for (i = 0; i < nc; i++)
- fprintf(fd, "{currentfile line%d readhexstring pop}bind\n", i);
- fprintf(fd, "true %d colorimage\n", nc);
-}
-
-#define DOBREAK(len, howmany, fd) \
- if (((len) -= (howmany)) <= 0) { \
- putc('\n', fd); \
- (len) = MAXLINE-(howmany); \
- }
-#define PUTHEX(c,fd) putc(hex[((c)>>4)&0xf],fd); putc(hex[(c)&0xf],fd)
-
-void
-PSDataColorContig(FILE* fd, TIFF* tif, uint32 w, uint32 h, int nc)
-{
- uint32 row;
- int breaklen = MAXLINE, cc, es = samplesperpixel - nc;
- unsigned char *tf_buf;
- unsigned char *cp, c;
-
- (void) w;
- tf_buf = (unsigned char *) _TIFFmalloc(tf_bytesperrow);
- if (tf_buf == NULL) {
- TIFFError(filename, "No space for scanline buffer");
- return;
- }
- for (row = 0; row < h; row++) {
- if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
- break;
- cp = tf_buf;
- if (alpha) {
- int adjust;
- cc = 0;
- for (; cc < tf_bytesperrow; cc += samplesperpixel) {
- DOBREAK(breaklen, nc, fd);
- /*
- * For images with alpha, matte against
- * a white background; i.e.
- * Cback * (1 - Aimage)
- * where Cback = 1.
- */
- adjust = 255 - cp[nc];
- switch (nc) {
- case 4: c = *cp++ + adjust; PUTHEX(c,fd);
- case 3: c = *cp++ + adjust; PUTHEX(c,fd);
- case 2: c = *cp++ + adjust; PUTHEX(c,fd);
- case 1: c = *cp++ + adjust; PUTHEX(c,fd);
- }
- cp += es;
- }
- } else {
- cc = 0;
- for (; cc < tf_bytesperrow; cc += samplesperpixel) {
- DOBREAK(breaklen, nc, fd);
- switch (nc) {
- case 4: c = *cp++; PUTHEX(c,fd);
- case 3: c = *cp++; PUTHEX(c,fd);
- case 2: c = *cp++; PUTHEX(c,fd);
- case 1: c = *cp++; PUTHEX(c,fd);
- }
- cp += es;
- }
- }
- }
- _TIFFfree((char *) tf_buf);
-}
-
-void
-PSDataColorSeparate(FILE* fd, TIFF* tif, uint32 w, uint32 h, int nc)
-{
- uint32 row;
- int breaklen = MAXLINE, cc;
- tsample_t s, maxs;
- unsigned char *tf_buf;
- unsigned char *cp, c;
-
- (void) w;
- tf_buf = (unsigned char *) _TIFFmalloc(tf_bytesperrow);
- if (tf_buf == NULL) {
- TIFFError(filename, "No space for scanline buffer");
- return;
- }
- maxs = (samplesperpixel > nc ? nc : samplesperpixel);
- for (row = 0; row < h; row++) {
- for (s = 0; s < maxs; s++) {
- if (TIFFReadScanline(tif, tf_buf, row, s) < 0)
- break;
- for (cp = tf_buf, cc = 0; cc < tf_bytesperrow; cc++) {
- DOBREAK(breaklen, 1, fd);
- c = *cp++;
- PUTHEX(c,fd);
- }
- }
- }
- _TIFFfree((char *) tf_buf);
-}
-
-#define PUTRGBHEX(c,fd) \
- PUTHEX(rmap[c],fd); PUTHEX(gmap[c],fd); PUTHEX(bmap[c],fd)
-
-void
-PSDataPalette(FILE* fd, TIFF* tif, uint32 w, uint32 h)
-{
- uint16 *rmap, *gmap, *bmap;
- uint32 row;
- int breaklen = MAXLINE, cc, nc;
- unsigned char *tf_buf;
- unsigned char *cp, c;
-
- (void) w;
- if (!TIFFGetField(tif, TIFFTAG_COLORMAP, &rmap, &gmap, &bmap)) {
- TIFFError(filename, "Palette image w/o \"Colormap\" tag");
- return;
- }
- switch (bitspersample) {
- case 8: case 4: case 2: case 1:
- break;
- default:
- TIFFError(filename, "Depth %d not supported", bitspersample);
- return;
- }
- nc = 3 * (8 / bitspersample);
- tf_buf = (unsigned char *) _TIFFmalloc(tf_bytesperrow);
- if (tf_buf == NULL) {
- TIFFError(filename, "No space for scanline buffer");
- return;
- }
- if (checkcmap(tif, 1<<bitspersample, rmap, gmap, bmap) == 16) {
- int i;
-#define CVT(x) ((unsigned short) (((x) * 255) / ((1U<<16)-1)))
- for (i = (1<<bitspersample)-1; i >= 0; i--) {
- rmap[i] = CVT(rmap[i]);
- gmap[i] = CVT(gmap[i]);
- bmap[i] = CVT(bmap[i]);
- }
-#undef CVT
- }
- for (row = 0; row < h; row++) {
- if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
- break;
- for (cp = tf_buf, cc = 0; cc < tf_bytesperrow; cc++) {
- DOBREAK(breaklen, nc, fd);
- switch (bitspersample) {
- case 8:
- c = *cp++; PUTRGBHEX(c, fd);
- break;
- case 4:
- c = *cp++; PUTRGBHEX(c&0xf, fd);
- c >>= 4; PUTRGBHEX(c, fd);
- break;
- case 2:
- c = *cp++; PUTRGBHEX(c&0x3, fd);
- c >>= 2; PUTRGBHEX(c&0x3, fd);
- c >>= 2; PUTRGBHEX(c&0x3, fd);
- c >>= 2; PUTRGBHEX(c, fd);
- break;
- case 1:
- c = *cp++; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c&0x1, fd);
- c >>= 1; PUTRGBHEX(c, fd);
- break;
- }
- }
- }
- _TIFFfree((char *) tf_buf);
-}
-
-void
-PSDataBW(FILE* fd, TIFF* tif, uint32 w, uint32 h)
-{
- int breaklen = MAXLINE;
- unsigned char* tf_buf;
- unsigned char* cp;
- tsize_t stripsize = TIFFStripSize(tif);
- tstrip_t s;
-
-#if defined( EXP_ASCII85ENCODER )
- int ascii85_l; /* Length, in bytes, of ascii85_p[] data */
- uint8 *ascii85_p = 0; /* Holds ASCII85 encoded data */
-#endif
-
- (void) w; (void) h;
- tf_buf = (unsigned char *) _TIFFmalloc(stripsize);
- memset(tf_buf, 0, stripsize);
- if (tf_buf == NULL) {
- TIFFError(filename, "No space for scanline buffer");
- return;
- }
-
-#if defined( EXP_ASCII85ENCODER )
- if ( ascii85 ) {
- /*
- * Allocate a buffer to hold the ASCII85 encoded data. Note
- * that it is allocated with sufficient room to hold the
- * encoded data (5*stripsize/4) plus the EOD marker (+8)
- * and formatting line breaks. The line breaks are more
- * than taken care of by using 6*stripsize/4 rather than
- * 5*stripsize/4.
- */
-
- ascii85_p = _TIFFmalloc( (stripsize+(stripsize/2)) + 8 );
-
- if ( !ascii85_p ) {
- _TIFFfree( tf_buf );
-
- TIFFError( filename, "Cannot allocate ASCII85 encoding buffer." );
- return;
- }
- }
-#endif
-
- if (ascii85)
- Ascii85Init();
-
- for (s = 0; s < TIFFNumberOfStrips(tif); s++) {
- int cc = TIFFReadEncodedStrip(tif, s, tf_buf, stripsize);
- if (cc < 0) {
- TIFFError(filename, "Can't read strip");
- break;
- }
- cp = tf_buf;
- if (photometric == PHOTOMETRIC_MINISWHITE) {
- for (cp += cc; --cp >= tf_buf;)
- *cp = ~*cp;
- cp++;
- }
- if (ascii85) {
-#if defined( EXP_ASCII85ENCODER )
- if (alpha) {
- int adjust, i;
- for (i = 0; i < cc; i+=2) {
- adjust = 255 - cp[i + 1];
- cp[i / 2] = cp[i] + adjust;
- }
- cc /= 2;
- }
-
- ascii85_l = Ascii85EncodeBlock( ascii85_p, 1, cp, cc );
-
- if ( ascii85_l > 0 )
- fwrite( ascii85_p, ascii85_l, 1, fd );
-#else
- while (cc-- > 0)
- Ascii85Put(*cp++, fd);
-#endif /* EXP_ASCII85_ENCODER */
- } else {
- unsigned char c;
-
- if (alpha) {
- int adjust;
- while (cc-- > 0) {
- DOBREAK(breaklen, 1, fd);
- /*
- * For images with alpha, matte against
- * a white background; i.e.
- * Cback * (1 - Aimage)
- * where Cback = 1.
- */
- adjust = 255 - cp[1];
- c = *cp++ + adjust; PUTHEX(c,fd);
- cp++, cc--;
- }
- } else {
- while (cc-- > 0) {
- c = *cp++;
- DOBREAK(breaklen, 1, fd);
- PUTHEX(c, fd);
- }
- }
- }
- }
-
- if ( !ascii85 )
- {
- if ( level2 || level3)
- fputs(">\n", fd);
- }
-#if !defined( EXP_ASCII85ENCODER )
- else
- Ascii85Flush(fd);
-#else
- if ( ascii85_p )
- _TIFFfree( ascii85_p );
-#endif
-
- _TIFFfree(tf_buf);
-}
-
-static void
-Ascii85Init(void)
-{
- ascii85breaklen = 2*MAXLINE;
- ascii85count = 0;
-}
-
-static char*
-Ascii85Encode(unsigned char* raw)
-{
- static char encoded[6];
- uint32 word;
-
- word = (((raw[0]<<8)+raw[1])<<16) + (raw[2]<<8) + raw[3];
- if (word != 0L) {
- uint32 q;
- uint16 w1;
-
- q = word / (85L*85*85*85); /* actually only a byte */
- encoded[0] = (char) (q + '!');
-
- word -= q * (85L*85*85*85); q = word / (85L*85*85);
- encoded[1] = (char) (q + '!');
-
- word -= q * (85L*85*85); q = word / (85*85);
- encoded[2] = (char) (q + '!');
-
- w1 = (uint16) (word - q*(85L*85));
- encoded[3] = (char) ((w1 / 85) + '!');
- encoded[4] = (char) ((w1 % 85) + '!');
- encoded[5] = '\0';
- } else
- encoded[0] = 'z', encoded[1] = '\0';
- return (encoded);
-}
-
-void
-Ascii85Put(unsigned char code, FILE* fd)
-{
- ascii85buf[ascii85count++] = code;
- if (ascii85count >= 4) {
- unsigned char* p;
- int n;
-
- for (n = ascii85count, p = ascii85buf; n >= 4; n -= 4, p += 4) {
- char* cp;
- for (cp = Ascii85Encode(p); *cp; cp++) {
- putc(*cp, fd);
- if (--ascii85breaklen == 0) {
- putc('\n', fd);
- ascii85breaklen = 2*MAXLINE;
- }
- }
- }
- _TIFFmemcpy(ascii85buf, p, n);
- ascii85count = n;
- }
-}
-
-void
-Ascii85Flush(FILE* fd)
-{
- if (ascii85count > 0) {
- char* res;
- _TIFFmemset(&ascii85buf[ascii85count], 0, 3);
- res = Ascii85Encode(ascii85buf);
- fwrite(res[0] == 'z' ? "!!!!" : res, ascii85count + 1, 1, fd);
- }
- fputs("~>\n", fd);
-}
-#if defined( EXP_ASCII85ENCODER)
-\f
-#define A85BREAKCNTR ascii85breaklen
-#define A85BREAKLEN (2*MAXLINE)
-
-/*****************************************************************************
-*
-* Name: Ascii85EncodeBlock( ascii85_p, f_eod, raw_p, raw_l )
-*
-* Description: This routine will encode the raw data in the buffer described
-* by raw_p and raw_l into ASCII85 format and store the encoding
-* in the buffer given by ascii85_p.
-*
-* Parameters: ascii85_p - A buffer supplied by the caller which will
-* contain the encoded ASCII85 data.
-* f_eod - Flag: Nz means to end the encoded buffer with
-* an End-Of-Data marker.
-* raw_p - Pointer to the buffer of data to be encoded
-* raw_l - Number of bytes in raw_p[] to be encoded
-*
-* Returns: (int) < 0 Error, see errno
-* >= 0 Number of bytes written to ascii85_p[].
-*
-* Notes: An external variable given by A85BREAKCNTR is used to
-* determine when to insert newline characters into the
-* encoded data. As each byte is placed into ascii85_p this
-* external is decremented. If the variable is decrement to
-* or past zero then a newline is inserted into ascii85_p
-* and the A85BREAKCNTR is then reset to A85BREAKLEN.
-* Note: for efficiency reasons the A85BREAKCNTR variable
-* is not actually checked on *every* character
-* placed into ascii85_p but often only for every
-* 5 characters.
-*
-* THE CALLER IS RESPONSIBLE FOR ENSURING THAT ASCII85_P[] IS
-* SUFFICIENTLY LARGE TO THE ENCODED DATA!
-* You will need at least 5 * (raw_l/4) bytes plus space for
-* newline characters and space for an EOD marker (if
-* requested). A safe calculation is to use 6*(raw_l/4) + 8
-* to size ascii85_p.
-*
-*****************************************************************************/
-
-int Ascii85EncodeBlock( uint8 * ascii85_p, unsigned f_eod, const uint8 * raw_p, int raw_l )
-
-{
- char ascii85[5]; /* Encoded 5 tuple */
- int ascii85_l; /* Number of bytes written to ascii85_p[] */
- int rc; /* Return code */
- uint32 val32; /* Unencoded 4 tuple */
-
- ascii85_l = 0; /* Nothing written yet */
-
- if ( raw_p )
- {
- --raw_p; /* Prepare for pre-increment fetches */
-
- for ( ; raw_l > 3; raw_l -= 4 )
- {
- val32 = *(++raw_p) << 24;
- val32 += *(++raw_p) << 16;
- val32 += *(++raw_p) << 8;
- val32 += *(++raw_p);
-
- if ( val32 == 0 ) /* Special case */
- {
- ascii85_p[ascii85_l] = 'z';
- rc = 1;
- }
-
- else
- {
- ascii85[4] = (char) ((val32 % 85) + 33);
- val32 /= 85;
-
- ascii85[3] = (char) ((val32 % 85) + 33);
- val32 /= 85;
-
- ascii85[2] = (char) ((val32 % 85) + 33);
- val32 /= 85;
-
- ascii85[1] = (char) ((val32 % 85) + 33);
- ascii85[0] = (char) ((val32 / 85) + 33);
-
- _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, sizeof(ascii85) );
- rc = sizeof(ascii85);
- }
-
- ascii85_l += rc;
-
- if ( (A85BREAKCNTR -= rc) <= 0 )
- {
- ascii85_p[ascii85_l] = '\n';
- ++ascii85_l;
- A85BREAKCNTR = A85BREAKLEN;
- }
- }
-
- /*
- * Output any straggler bytes:
- */
-
- if ( raw_l > 0 )
- {
- int len; /* Output this many bytes */
-
- len = raw_l + 1;
- val32 = *++raw_p << 24; /* Prime the pump */
-
- if ( --raw_l > 0 ) val32 += *(++raw_p) << 16;
- if ( --raw_l > 0 ) val32 += *(++raw_p) << 8;
-
- val32 /= 85;
-
- ascii85[3] = (char) ((val32 % 85) + 33);
- val32 /= 85;
-
- ascii85[2] = (char) ((val32 % 85) + 33);
- val32 /= 85;
-
- ascii85[1] = (char) ((val32 % 85) + 33);
- ascii85[0] = (char) ((val32 / 85) + 33);
-
- _TIFFmemcpy( &ascii85_p[ascii85_l], ascii85, len );
- ascii85_l += len;
- }
- }
-
- /*
- * If requested add an ASCII85 End Of Data marker:
- */
-
- if ( f_eod )
- {
- ascii85_p[ascii85_l++] = '~';
- ascii85_p[ascii85_l++] = '>';
- ascii85_p[ascii85_l++] = '\n';
- }
-
- return ( ascii85_l );
-
-} /* Ascii85EncodeBlock() */
-
-#endif /* EXP_ASCII85ENCODER */
-
-/* vim: set ts=8 sts=8 sw=8 noet: */
https://www.fi.muni.cz/~kas/git / evince.git / blobdiff