From b7abdba401b7aec50e93ecd1df1ce76cb1f315c1 Mon Sep 17 00:00:00 2001 From: Matthew S. Wilson Date: Sun, 03 Jul 2005 14:00:45 +0000 Subject: implement the ps exporter interface for tiff documents 2005-07-03 Matthew S. Wilson * tiff/tiff-document.c (tiff_document_ps_export_begin) (tiff_document_ps_export_do_page, tiff_document_ps_export_end) (tiff_document_document_ps_exporter_iface_init): implement the ps exporter interface for tiff documents * tiff/tiff2ps.c: added a modified version of tiff2ps.c from libtiff to implement TIFF postscript export * tiff/tiff2ps.h: added a header file for external tiff2ps functions. * tiff/Makefile.am (libtiffdocument_la_SOURCES): add tiff2ps.c and tiff2ps.h --- (limited to 'tiff') diff --git a/tiff/Makefile.am b/tiff/Makefile.am index fcda178..8919951 100644 --- a/tiff/Makefile.am +++ b/tiff/Makefile.am @@ -8,7 +8,9 @@ noinst_LTLIBRARIES = libtiffdocument.la libtiffdocument_la_SOURCES = \ tiff-document.c \ - tiff-document.h + tiff-document.h \ + tiff2ps.c \ + tiff2ps.h libtiffdocument_la_LIBADD = \ -ltiff -lz diff --git a/tiff/tiff-document.c b/tiff/tiff-document.c index 3324e7d..137833b 100644 --- a/tiff/tiff-document.c +++ b/tiff/tiff-document.c @@ -1,4 +1,3 @@ - /* -*- Mode: C; tab-width: 8; indent-tabs-mode: t; c-basic-offset: 8; c-indent-level: 8 -*- */ /* * Copyright (C) 2005, Jonathan Blandford @@ -18,12 +17,19 @@ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */ -/* FIXME: Shoudl probably buffer calls to libtiff with TIFFSetWarningHandler +/* FIXME: Should probably buffer calls to libtiff with TIFFSetWarningHandler */ + +#include +#include +#include + #include "tiffio.h" +#include "tiff2ps.h" #include "tiff-document.h" -#include "ev-document-thumbnails.h" #include "ev-document-misc.h" +#include "ev-document-thumbnails.h" +#include "ev-ps-exporter.h" struct _TiffDocumentClass { @@ -37,18 +43,23 @@ struct _TiffDocument TIFF *tiff; gint n_pages; EvOrientation orientation; + FILE *ps_export_file; + gint ps_export_pages; }; typedef struct _TiffDocumentClass TiffDocumentClass; static void tiff_document_document_iface_init (EvDocumentIface *iface); static void tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface); +static void tiff_document_document_ps_exporter_iface_init (EvPSExporterIface *iface); G_DEFINE_TYPE_WITH_CODE (TiffDocument, tiff_document, G_TYPE_OBJECT, { G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT, tiff_document_document_iface_init); G_IMPLEMENT_INTERFACE (EV_TYPE_DOCUMENT_THUMBNAILS, tiff_document_document_thumbnails_iface_init); + G_IMPLEMENT_INTERFACE (EV_TYPE_PS_EXPORTER, + tiff_document_document_ps_exporter_iface_init); }); static TIFFErrorHandler orig_error_handler = NULL; @@ -398,6 +409,55 @@ tiff_document_document_thumbnails_iface_init (EvDocumentThumbnailsIface *iface) iface->get_dimensions = tiff_document_thumbnails_get_dimensions; } +/* postscript exporter implementation */ + +static void +tiff_document_ps_export_begin (EvPSExporter *exporter, const char *filename, + int first_page, int last_page) +{ + TiffDocument *document = TIFF_DOCUMENT (exporter); + + document->ps_export_file = g_fopen (filename, "w"); + if (document->ps_export_file == NULL) + return; + document->ps_export_pages = 0; +} + +static void +tiff_document_ps_export_do_page (EvPSExporter *exporter, int page) +{ + TiffDocument *document = TIFF_DOCUMENT (exporter); + + if (document->ps_export_file == NULL) + return; + if (TIFFSetDirectory (document->tiff, page) != 1) + return; + TIFF2PS (document->ps_export_file, + document->tiff, + 0, 0, 0, 0, 0, + &document->ps_export_pages); +} + +static void +tiff_document_ps_export_end (EvPSExporter *exporter) +{ + TiffDocument *document = TIFF_DOCUMENT (exporter); + + if (document->ps_export_file == NULL) + return; + if (document->ps_export_pages) + TIFFPSTail (document->ps_export_file, + document->ps_export_pages); + fclose (document->ps_export_file); +} + +static void +tiff_document_document_ps_exporter_iface_init (EvPSExporterIface *iface) +{ + iface->begin = tiff_document_ps_export_begin; + iface->do_page = tiff_document_ps_export_do_page; + iface->end = tiff_document_ps_export_end; +} static void tiff_document_init (TiffDocument *tiff_document) diff --git a/tiff/tiff2ps.c b/tiff/tiff2ps.c new file mode 100644 index 0000000..f6279f4 --- /dev/null +++ b/tiff/tiff2ps.c @@ -0,0 +1,1816 @@ +/* $Id$ */ + +/* + * 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 + * Modifications Copyright (C) 2005 rpath, Inc. + * + * FIXME: refactor to remove use of global variables + */ + +#include +#include /* for atof */ +#include +#include +#include +#include + +#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:
+ * <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<= 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) + +#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: */ diff --git a/tiff/tiff2ps.h b/tiff/tiff2ps.h new file mode 100644 index 0000000..0fde5a6 --- /dev/null +++ b/tiff/tiff2ps.h @@ -0,0 +1,5 @@ +#include +#include "tiffio.h" + +void TIFF2PS(FILE*, TIFF*, double, double, double, double, int, int*); +void TIFFPSTail(FILE*, int); -- cgit v0.9.1