--- /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 = TRUE; /* 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 / commitdiff