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singe/thirdparty/SDL2_image/external/libtiff/tools/tiff2ps.c
Scott Duensing 94f83e7608 Major reorganization to start work on Singe 2.10.
2023-10-23 19:38:18 -05:00

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/*
* 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.
*/
#include "libport.h"
#include "tif_config.h"
#include <math.h>
#include <stdio.h>
#include <stdlib.h> /* for atof */
#include <string.h>
#include <time.h>
#ifdef HAVE_UNISTD_H
#include <unistd.h>
#endif
#include "tiffio.h"
#ifndef EXIT_SUCCESS
#define EXIT_SUCCESS 0
#endif
#ifndef EXIT_FAILURE
#define EXIT_FAILURE 1
#endif
/*
* Revision history
* 2013-Jan-21
* Richard Nolde: Fix bug in auto rotate option code. Once a
* rotation angle was set by the auto rotate check, it was
* retained for all pages that followed instead of being
* retested for each page.
*
* 2010-Sep-17
* Richard Nolde: Reinstate code from Feb 2009 that never got
* accepted into CVS with major modifications to handle -H and -W
* options. Replaced original PlaceImage function with several
* new functions that make support for multiple output pages
* from a single image easier to understand. Added additional
* warning messages for incompatible command line options.
* Add new command line options to specify PageOrientation
* Document Structuring Comment for landscape or portrait
* and code to determine the values from output width and height
* if not specified on the command line.
* Add new command line option to specify document creator
* as an alterntive to the string "tiff2ps" following model
* of patch submitted by Thomas Jarosch for specifying a
* document title which is also supported now.
*
* 2009-Feb-11
* Richard Nolde: Added support for rotations of 90, 180, 270
* and auto using -r <90|180|270|auto>. Auto picks the best
* fit for the image on the specified paper size (eg portrait
* or landscape) if -h or -w is specified. Rotation is in
* degrees counterclockwise since that is how Postscript does
* it. The auto opption rotates the image 90 degrees ccw to
* produce landscape if that is a better fit than portrait.
*
* Cleaned up code in TIFF2PS and broke into smaller functions
* to simplify rotations.
*
* Identified incompatible options and returned errors, eg
* -i for imagemask operator is only available for Level2 or
* Level3 Postscript in the current implementation since there
* is a difference in the way the operands are called for Level1
* and there is no function to provide the Level1 version.
* -H was not handled properly if -h and/or -w were specified.
* It should only clip the masked images if the scaled image
* exceeds the maxPageHeight specified with -H.
*
* New design allows for all of the following combinations:
* Conversion of TIFF to Postscript with optional rotations
* of 90, 180, 270, or auto degrees counterclockwise
* Conversion of TIFF to Postscript with entire image scaled
* to maximum of values specified with -h or -w while
* maintaining aspect ratio. Same rotations apply.
* Conversion of TIFF to Postscript with clipping of output
* viewport to height specified with -H, producing multiple
* pages at this height and original width as needed.
* Same rotations apply.
* Conversion of TIFF to Postscript with image scaled to
* maximum specified by -h and -w and the resulting scaled
* image is presented in an output viewport clipped by -H height.
* The same rotations apply.
*
* Added maxPageWidth option using -W flag. MaxPageHeight and
* MaxPageWidth are mutually exclusive since the aspect ratio
* cannot be maintained if you set both.
* Rewrote PlaceImage to allow maxPageHeight and maxPageWidth
* options to work with values smaller or larger than the
* physical paper size and still preserve the aspect ratio.
* This is accomplished by creating multiple pages across
* as well as down if need be.
*
* 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 a lot of the loop
* overhead of the byte-by-byte 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
#ifndef TRUE
#define TRUE 1
#define FALSE 0
#endif
#define DEFAULT_MAX_MALLOC (256 * 1024 * 1024)
/* malloc size limit (in bytes)
* disabled when set to 0 */
static tmsize_t maxMalloc = DEFAULT_MAX_MALLOC;
int ascii85 = FALSE; /* use ASCII85 encoding */
int interpolate = TRUE; /* interpolate level2 image */
int level2 = FALSE; /* generate PostScript level 2 */
int level3 = FALSE; /* generate PostScript level 3 */
int printAll = FALSE; /* print all images in file */
int generateEPSF = TRUE; /* generate Encapsulated PostScript */
int PSduplex = FALSE; /* enable duplex printing */
int PStumble = FALSE; /* enable top edge binding */
int PSavoiddeadzone = TRUE; /* enable avoiding printer deadzone */
double maxPageHeight =
0; /* maximum height to select from image and print per page */
double maxPageWidth =
0; /* maximum width to select from image and print per page */
double splitOverlap = 0; /* amount for split pages to overlag */
int rotation = 0; /* optional value for rotation angle */
int auto_rotate = 0; /* rotate image for best fit on the page */
char *filename = NULL; /* input filename */
char *title = NULL; /* optional document title string */
char *creator = NULL; /* optional document creator string */
char pageOrientation[12]; /* set optional PageOrientation DSC to Landscape or
Portrait */
int useImagemask = FALSE; /* Use imagemask instead of image operator */
uint16_t res_unit = 0; /* Resolution units: 2 - inches, 3 - cm */
/*
* ASCII85 Encoding Support.
*/
unsigned char ascii85buf[10];
int ascii85count;
int ascii85breaklen;
int TIFF2PS(FILE *, TIFF *, double, double, double, double, int);
void PSpage(FILE *, TIFF *, uint32_t, uint32_t);
void PSColorContigPreamble(FILE *, uint32_t, uint32_t, int);
void PSColorSeparatePreamble(FILE *, uint32_t, uint32_t, int);
void PSDataColorContig(FILE *, TIFF *, uint32_t, uint32_t, int);
void PSDataColorSeparate(FILE *, TIFF *, uint32_t, uint32_t, int);
void PSDataPalette(FILE *, TIFF *, uint32_t, uint32_t);
void PSDataBW(FILE *, TIFF *, uint32_t, uint32_t);
void PSRawDataBW(FILE *, TIFF *, uint32_t, uint32_t);
void Ascii85Init(void);
void Ascii85Put(unsigned char code, FILE *fd);
void Ascii85Flush(FILE *fd);
void PSHead(FILE *, double, double, double, double);
void PSTail(FILE *, int);
int psStart(FILE *, int, int, int *, double *, double, double, double, double,
double, double, double, double, double, double);
int psPageSize(FILE *, int, double, double, double, double, double, double);
int psRotateImage(FILE *, int, double, double, double, double);
int psMaskImage(FILE *, TIFF *, int, int, int *, double, double, double, double,
double, double, double, double, double);
int psScaleImage(FILE *, double, int, int, double, double, double, double,
double, double);
int get_viewport(double, double, double, double, double *, double *, int);
int exportMaskedImage(FILE *, double, double, double, double, int, int, double,
double, double, int, int);
#if defined(EXP_ASCII85ENCODER)
tsize_t Ascii85EncodeBlock(uint8_t *ascii85_p, unsigned f_eod,
const uint8_t *raw_p, tsize_t raw_l);
#endif
static void usage(int);
/**
* This custom malloc function enforce a maximum allocation size
*/
static void *limitMalloc(tmsize_t s)
{
/* tmsize_t is signed and _TIFFmalloc() converts s to size_t. Therefore
* check for negative s. */
if (maxMalloc && ((s > maxMalloc) || (s < 0)))
{
fprintf(stderr,
"MemoryLimitError: allocation of %" TIFF_SSIZE_FORMAT
" bytes is forbidden. Limit is %" TIFF_SSIZE_FORMAT ".\n",
s, maxMalloc);
fprintf(stderr, " use -M option to change limit.\n");
return NULL;
}
return _TIFFmalloc(s);
}
int main(int argc, char *argv[])
{
int dirnum = -1, c, np = 0;
int centered = 0;
double bottommargin = 0;
double leftmargin = 0;
double pageWidth = 0;
double pageHeight = 0;
uint32_t diroff = 0;
#if !HAVE_DECL_OPTARG
extern char *optarg;
extern int optind;
#endif
FILE *output = stdout;
pageOrientation[0] = '\0';
while ((c = getopt(argc, argv,
"b:d:h:H:W:L:M:i:w:l:o:O:P:C:r:t:acemxyzps1238DT")) !=
-1)
switch (c)
{
case 'M':
maxMalloc = (tmsize_t)strtoul(optarg, NULL, 0) << 20;
break;
case 'b':
bottommargin = atof(optarg);
break;
case 'c':
centered = 1;
break;
case 'C':
creator = optarg;
break;
case 'd': /* without -a, this only processes one image at this IFD
*/
dirnum = atoi(optarg);
break;
case 'D':
PSduplex = TRUE;
break;
case 'i':
interpolate = atoi(optarg) ? TRUE : FALSE;
break;
case 'T':
PStumble = TRUE;
break;
case 'e':
PSavoiddeadzone = FALSE;
generateEPSF = TRUE;
break;
case 'h':
pageHeight = atof(optarg);
break;
case 'H':
maxPageHeight = atof(optarg);
break;
case 'W':
maxPageWidth = atof(optarg);
break;
case 'L':
splitOverlap = atof(optarg);
break;
case 'm':
useImagemask = TRUE;
break;
case 'o':
switch (optarg[0])
{
case '0':
case '1':
case '2':
case '3':
case '4':
case '5':
case '6':
case '7':
case '8':
case '9':
diroff = (uint32_t)strtoul(optarg, NULL, 0);
break;
default:
TIFFError("-o", "Offset must be a numeric value.");
exit(EXIT_FAILURE);
}
break;
case 'O': /* XXX too bad -o is already taken */
output = fopen(optarg, "w");
if (output == NULL)
{
fprintf(stderr, "%s: %s: Cannot open output file.\n",
argv[0], optarg);
exit(EXIT_FAILURE);
}
break;
case 'P':
switch (optarg[0])
{
case 'l':
case 'L':
strcpy(pageOrientation, "Landscape");
break;
case 'p':
case 'P':
strcpy(pageOrientation, "Portrait");
break;
default:
TIFFError(
"-P",
"Page orientation must be Landscape or Portrait");
exit(EXIT_FAILURE);
}
break;
case 'l':
leftmargin = atof(optarg);
break;
case 'a': /* removed fall through to generate warning below, R Nolde
09-01-2010 */
printAll = TRUE;
break;
case 'p':
generateEPSF = FALSE;
break;
case 'r':
if (strcmp(optarg, "auto") == 0)
{
rotation = 0;
auto_rotate = TRUE;
}
else
{
rotation = atoi(optarg);
auto_rotate = FALSE;
}
switch (rotation)
{
case 0:
case 90:
case 180:
case 270:
break;
default:
fprintf(stderr, "Rotation angle must be 90, 180, 270 "
"(degrees ccw) or auto\n");
exit(EXIT_FAILURE);
}
break;
case 's':
printAll = FALSE;
break;
case 't':
title = optarg;
break;
case 'w':
pageWidth = atof(optarg);
break;
case 'z':
PSavoiddeadzone = FALSE;
break;
case '1':
level2 = FALSE;
level3 = FALSE;
ascii85 = FALSE;
break;
case '2':
level2 = TRUE;
ascii85 = TRUE; /* default to yes */
break;
case '3':
level3 = TRUE;
ascii85 = TRUE; /* default to yes */
break;
case '8':
ascii85 = FALSE;
break;
case 'x':
res_unit = RESUNIT_CENTIMETER;
break;
case 'y':
res_unit = RESUNIT_INCH;
break;
case '?':
usage(EXIT_FAILURE);
}
if (useImagemask == TRUE)
{
if ((level2 == FALSE) && (level3 == FALSE))
{
TIFFError(
"-m ",
" imagemask operator requires Postscript Level2 or Level3");
exit(EXIT_FAILURE);
}
}
if (pageWidth && (maxPageWidth > pageWidth))
{
TIFFError("-W", "Max viewport width cannot exceed page width");
exit(EXIT_FAILURE);
}
/* auto rotate requires a specified page width and height */
if (auto_rotate == TRUE)
{
/*
if ((pageWidth == 0) || (pageHeight == 0))
TIFFWarning ("-r auto", " requires page height and width specified with
-h and -w");
*/
if ((maxPageWidth > 0) || (maxPageHeight > 0))
{
TIFFError("-r auto", " is incompatible with maximum page "
"width/height specified by -H or -W");
exit(EXIT_FAILURE);
}
}
if ((maxPageWidth > 0) && (maxPageHeight > 0))
{
TIFFError("-H and -W",
" Use only one of -H or -W to define a viewport");
exit(EXIT_FAILURE);
}
if ((generateEPSF == TRUE) && (printAll == TRUE))
{
TIFFError(" -e and -a", "Warning: Cannot generate Encapsulated "
"Postscript for multiple images");
generateEPSF = FALSE;
}
if ((generateEPSF == TRUE) && (PSduplex == TRUE))
{
TIFFError(
" -e and -D",
"Warning: Encapsulated Postscript does not support Duplex option");
PSduplex = FALSE;
}
if ((generateEPSF == TRUE) && (PStumble == TRUE))
{
TIFFError(" -e and -T", "Warning: Encapsulated Postscript does not "
"support Top Edge Binding option");
PStumble = FALSE;
}
if ((generateEPSF == TRUE) && (PSavoiddeadzone == TRUE))
PSavoiddeadzone = FALSE;
for (; argc - optind > 0; optind++)
{
TIFFOpenOptions *opts = TIFFOpenOptionsAlloc();
if (opts == NULL)
{
return EXIT_FAILURE;
}
TIFFOpenOptionsSetMaxSingleMemAlloc(opts, maxMalloc);
TIFF *tif = TIFFOpenExt(filename = argv[optind], "r", opts);
TIFFOpenOptionsFree(opts);
if (tif != NULL)
{
if (dirnum != -1 && !TIFFSetDirectory(tif, (tdir_t)dirnum))
{
TIFFClose(tif);
return (EXIT_FAILURE);
}
else if (diroff != 0 && !TIFFSetSubDirectory(tif, diroff))
{
TIFFClose(tif);
return (EXIT_FAILURE);
}
np = TIFF2PS(output, tif, pageWidth, pageHeight, leftmargin,
bottommargin, centered);
if (np < 0)
{
TIFFError("Error", "Unable to process %s", filename);
}
TIFFClose(tif);
}
}
if (np)
PSTail(output, np);
else
usage(EXIT_FAILURE);
if (output != stdout)
fclose(output);
return (EXIT_SUCCESS);
}
static uint16_t samplesperpixel;
static uint16_t bitspersample;
static uint16_t planarconfiguration;
static uint16_t photometric;
static uint16_t compression;
static uint16_t 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 through... */
case PHOTOMETRIC_RGB:
if (alpha && bitspersample != 8)
{
TIFFError(filename,
"Can not handle %" PRIu16
"-bit/sample RGB image with alpha",
bitspersample);
return (0);
}
/* fall through... */
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 through... */
default:
TIFFError(
filename,
"Can not handle image with PhotometricInterpretation=%" PRIu16,
photometric);
return (0);
}
switch (bitspersample)
{
case 1:
case 2:
case 4:
case 8:
case 16:
break;
default:
TIFFError(filename, "Can not handle %" PRIu16 "-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 const 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_t w, uint32_t h, int bs, int nc,
const char *startline)
{
fprintf(fd, "%%ImageData: %" PRIu32 " %" PRIu32 " %" PRIu16 " %d 0 %d 2 \"",
w, h, bitspersample, nc, bs);
fprintf(fd, startline, nc);
fprintf(fd, "\"\n");
}
/* Convert pixel width and height pw, ph, to points pprw, pprh
* using image resolution and resolution units from TIFF tags.
* 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_t *pw, uint32_t *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) /* Not specified as command line option */
if (!TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &res_unit))
res_unit = RESUNIT_INCH;
/*
* 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: /* Subsequent code assumes we have converted to
inches! */
res_unit = RESUNIT_INCH;
break;
default: /* Last ditch guess for unspecified RESUNIT case
* check that the resolution is not inches before scaling it.
* Moved to end of function with additional check, RJN,
* 08-31-2010 if (xres != PS_UNIT_SIZE || yres != PS_UNIT_SIZE)
* xres *= PS_UNIT_SIZE, yres *= PS_UNIT_SIZE;
*/
break;
}
/* This is a hack to deal with images that have no meaningful Resolution
* Size but may have x and/or y resolutions of 1 pixel per undefined unit.
*/
if ((xres > 1.0) && (xres != PS_UNIT_SIZE))
*pprw = PSUNITS(*pw, xres);
else
*pprw = PSUNITS(*pw, PS_UNIT_SIZE);
if ((yres > 1.0) && (yres != PS_UNIT_SIZE))
*pprh = PSUNITS(*ph, yres);
else
*pprh = PSUNITS(*ph, PS_UNIT_SIZE);
}
static int isCCITTCompression(TIFF *tif)
{
uint16_t 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 uint32_t tf_rowsperstrip;
static uint32_t tf_numberstrips;
static char *hex = "0123456789abcdef";
/*
* Pagewidth and pageheight are the output size in points,
* may refer to values specified with -h and -w, or to
* values read from the image if neither -h nor -w are used.
* Imagewidth and imageheight are image size in points.
* Ximages and Yimages are number of pages across and down.
* Only one of maxPageHeight or maxPageWidth can be used.
* These are global variables unfortunately.
*/
int get_subimage_count(double pagewidth, double pageheight, double imagewidth,
double imageheight, int *ximages, int *yimages,
int rotation, double scale)
{
int pages = 1;
double splitheight = 0; /* Requested Max Height in points */
double splitwidth = 0; /* Requested Max Width in points */
double overlap = 0; /* Repeated edge width in points */
splitheight = maxPageHeight * PS_UNIT_SIZE;
splitwidth = maxPageWidth * PS_UNIT_SIZE;
overlap = splitOverlap * PS_UNIT_SIZE;
pagewidth *= PS_UNIT_SIZE;
pageheight *= PS_UNIT_SIZE;
if ((imagewidth < 1.0) || (imageheight < 1.0))
{
TIFFError("get_subimage_count", "Invalid image width or height");
return (0);
}
switch (rotation)
{
case 0:
case 180:
if (splitheight > 0) /* -H maxPageHeight */
{
if (imageheight >
splitheight) /* More than one vertical image segment */
{
if (pagewidth)
*ximages = (int)ceil((scale * imagewidth) /
(pagewidth - overlap));
else
*ximages = 1;
*yimages = (int)ceil(
(scale * imageheight) /
(splitheight - overlap)); /* Max vert pages needed */
}
else
{
if (pagewidth)
*ximages = (int)ceil(
(scale * imagewidth) /
(pagewidth - overlap)); /* Max horz pages needed */
else
*ximages = 1;
*yimages = 1; /* Max vert pages needed */
}
}
else
{
if (splitwidth > 0) /* -W maxPageWidth */
{
if (imagewidth > splitwidth)
{
*ximages = (int)ceil(
(scale * imagewidth) /
(splitwidth - overlap)); /* Max horz pages needed */
if (pageheight)
*yimages = (int)ceil(
(scale * imageheight) /
(pageheight -
overlap)); /* Max vert pages needed */
else
*yimages = 1;
}
else
{
*ximages = 1; /* Max vert pages needed */
if (pageheight)
*yimages = (int)ceil(
(scale * imageheight) /
(pageheight -
overlap)); /* Max vert pages needed */
else
*yimages = 1;
}
}
else
{
*ximages = 1;
*yimages = 1;
}
}
break;
case 90:
case 270:
if (splitheight > 0) /* -H maxPageHeight */
{
if (imagewidth >
splitheight) /* More than one vertical image segment */
{
*yimages = (int)ceil(
(scale * imagewidth) /
(splitheight - overlap)); /* Max vert pages needed */
if (pagewidth)
*ximages = (int)ceil(
(scale * imageheight) /
(pagewidth - overlap)); /* Max horz pages needed */
else
*ximages = 1;
}
else
{
*yimages = 1; /* Max vert pages needed */
if (pagewidth)
*ximages = (int)ceil(
(scale * imageheight) /
(pagewidth - overlap)); /* Max horz pages needed */
else
*ximages = 1;
}
}
else
{
if (splitwidth > 0) /* -W maxPageWidth */
{
if (imageheight > splitwidth)
{
if (pageheight)
*yimages = (int)ceil(
(scale * imagewidth) /
(pageheight -
overlap)); /* Max vert pages needed */
else
*yimages = 1;
*ximages = (int)ceil(
(scale * imageheight) /
(splitwidth - overlap)); /* Max horz pages needed */
}
else
{
if (pageheight)
*yimages = (int)ceil(
(scale * imagewidth) /
(pageheight -
overlap)); /* Max horz pages needed */
else
*yimages = 1;
*ximages = 1; /* Max vert pages needed */
}
}
else
{
*ximages = 1;
*yimages = 1;
}
}
break;
default:
*ximages = 1;
*yimages = 1;
}
pages = (*ximages) * (*yimages);
return (pages);
}
/* New version of PlaceImage that handles only the translation and rotation
* for a single output page.
*/
int exportMaskedImage(FILE *fp, double pagewidth, double pageheight,
double imagewidth, double imageheight, int row,
int column, double left_offset, double bott_offset,
double scale, int center, int rotation)
{
double xtran = 0.0;
double ytran = 0.0;
double xscale = 1.0;
double yscale = 1.0;
double splitheight = 0; /* Requested Max Height in points */
double splitwidth = 0; /* Requested Max Width in points */
double overlap = 0; /* Repeated edge width in points */
double subimage_height = 0.0;
splitheight = maxPageHeight * PS_UNIT_SIZE;
splitwidth = maxPageWidth * PS_UNIT_SIZE;
overlap = splitOverlap * PS_UNIT_SIZE;
xscale = scale * imagewidth;
yscale = scale * imageheight;
if ((xscale < 0.0) || (yscale < 0.0))
{
TIFFError("exportMaskedImage", "Invalid parameters.");
return (-1);
}
/* If images are cropped to a vewport with -H or -W, the output pages are
* shifted to the top of each output page rather than the Postscript default
* lower edge.
*/
switch (rotation)
{
case 0:
case 180:
if (splitheight > 0) /* -H maxPageHeight */
{
if (splitheight <
imageheight) /* More than one vertical image segments */
{
/* Intra2net: Keep correct apspect ratio */
xscale = (imagewidth + overlap) *
(pageheight / splitheight) * scale;
xtran = -1.0 * column * (pagewidth - overlap);
subimage_height =
imageheight - ((splitheight - overlap) * row);
ytran = pageheight -
subimage_height * (pageheight / splitheight);
}
else /* Only one page in vertical direction */
{
xtran = -1.0 * column * (pagewidth - overlap);
ytran = splitheight - imageheight;
}
}
else
{
if (splitwidth > 0) /* maxPageWidth */
{
if (splitwidth < imagewidth)
{
xtran = -1.0 * column * splitwidth;
ytran = -1.0 * row * (pageheight - overlap);
}
else /* Only one page in horizontal direction */
{
ytran = -1.0 * row * (pageheight - overlap);
xtran = 0;
}
}
else /* Simple case, no splitting */
{
ytran = pageheight - imageheight;
xtran = 0;
}
}
if (imagewidth <= pagewidth)
{
/* Intra2net: Crop page at the bottom instead of the top (->
output starts at the top). Only do this in non-page-split
mode */
if (imageheight <= splitheight)
{
ytran = pageheight -
imageheight; /* Note: Will be negative for images
longer than page size */
}
}
bott_offset += ytran / (center ? 2 : 1);
left_offset += xtran / (center ? 2 : 1);
break;
case 90:
case 270:
if (splitheight > 0) /* -H maxPageHeight */
{
if (splitheight <
imagewidth) /* More than one vertical image segments */
{
xtran = -1.0 * column * (pageheight - overlap);
/* Commented code places image at bottom of page instead of
top. ytran = -1.0 * row * splitheight;
*/
if (row == 0)
ytran = -1.0 * (imagewidth - splitheight);
else
ytran = -1.0 * (imagewidth -
(splitheight - overlap) * (row + 1));
}
else /* Only one page in vertical direction */
{
xtran = -1.0 * column * (pageheight - overlap);
ytran = splitheight - imagewidth;
}
}
else
{
if (splitwidth > 0) /* maxPageWidth */
{
if (splitwidth < imageheight)
{
xtran = -1.0 * column * splitwidth;
ytran = -1.0 * row * (pagewidth - overlap);
}
else /* Only one page in horizontal direction */
{
ytran = -1.0 * row * (pagewidth - overlap);
xtran = 0;
}
}
else /* Simple case, no splitting */
{
ytran = pageheight - imageheight;
xtran = 0; /* pagewidth - imagewidth; */
}
}
bott_offset += ytran / (center ? 2 : 1);
left_offset += xtran / (center ? 2 : 1);
break;
default:
xtran = 0;
ytran = 0;
}
switch (rotation)
{
case 0:
fprintf(fp, "%f %f translate\n", left_offset, bott_offset);
fprintf(fp, "%f %f scale\n", xscale, yscale);
break;
case 180:
fprintf(fp, "%f %f translate\n", left_offset, bott_offset);
fprintf(fp, "%f %f scale\n1 1 translate 180 rotate\n", xscale,
yscale);
break;
case 90:
fprintf(fp, "%f %f translate\n", left_offset, bott_offset);
fprintf(fp, "%f %f scale\n1 0 translate 90 rotate\n", yscale,
xscale);
break;
case 270:
fprintf(fp, "%f %f translate\n", left_offset, bott_offset);
fprintf(fp, "%f %f scale\n0 1 translate 270 rotate\n", yscale,
xscale);
break;
default:
TIFFError("exportMaskedImage",
"Unsupported rotation angle %d. No rotation", rotation);
fprintf(fp, "%f %f scale\n", xscale, yscale);
break;
}
return (0);
}
/* Rotate an image without scaling or clipping */
int psRotateImage(FILE *fd, int rotation, double pswidth, double psheight,
double left_offset, double bottom_offset)
{
if ((left_offset != 0.0) || (bottom_offset != 0))
fprintf(fd, "%f %f translate\n", left_offset, bottom_offset);
/* Exchange width and height for 90/270 rotations */
switch (rotation)
{
case 0:
fprintf(fd, "%f %f scale\n", pswidth, psheight);
break;
case 90:
fprintf(fd, "%f %f scale\n1 0 translate 90 rotate\n", psheight,
pswidth);
break;
case 180:
fprintf(fd, "%f %f scale\n1 1 translate 180 rotate\n", pswidth,
psheight);
break;
case 270:
fprintf(fd, "%f %f scale\n0 1 translate 270 rotate\n", psheight,
pswidth);
break;
default:
TIFFError("psRotateImage", "Unsupported rotation %d.", rotation);
fprintf(fd, "%f %f scale\n", pswidth, psheight);
return (1);
}
return (0);
}
/* Scale and rotate an image to a single output page. */
int psScaleImage(FILE *fd, double scale, int rotation, int center,
double reqwidth, double reqheight, double pswidth,
double psheight, double left_offset, double bottom_offset)
{
double hcenter = 0.0, vcenter = 0.0;
/* Adjust offsets for centering */
if (center)
{
switch (rotation)
{
case 90:
vcenter = (reqheight - pswidth * scale) / 2;
hcenter = (reqwidth - psheight * scale) / 2;
fprintf(fd, "%f %f translate\n", hcenter, vcenter);
fprintf(fd, "%f %f scale\n1 0 translate 90 rotate\n",
psheight * scale, pswidth * scale);
break;
case 180:
hcenter = (reqwidth - pswidth * scale) / 2;
vcenter = (reqheight - psheight * scale) / 2;
fprintf(fd, "%f %f translate\n", hcenter, vcenter);
fprintf(fd, "%f %f scale\n1 1 translate 180 rotate\n",
pswidth * scale, psheight * scale);
break;
case 270:
vcenter = (reqheight - pswidth * scale) / 2;
hcenter = (reqwidth - psheight * scale) / 2;
fprintf(fd, "%f %f translate\n", hcenter, vcenter);
fprintf(fd, "%f %f scale\n0 1 translate 270 rotate\n",
psheight * scale, pswidth * scale);
break;
case 0:
default:
hcenter = (reqwidth - pswidth * scale) / 2;
vcenter = (reqheight - psheight * scale) / 2;
fprintf(fd, "%f %f translate\n", hcenter, vcenter);
fprintf(fd, "%f %f scale\n", pswidth * scale, psheight * scale);
break;
}
}
else /* Not centered */
{
switch (rotation)
{
case 0:
fprintf(fd, "%f %f translate\n",
left_offset ? left_offset : 0.0,
bottom_offset ? bottom_offset
: reqheight - (psheight * scale));
fprintf(fd, "%f %f scale\n", pswidth * scale, psheight * scale);
break;
case 90:
fprintf(fd, "%f %f translate\n",
left_offset ? left_offset : 0.0,
bottom_offset ? bottom_offset
: reqheight - (pswidth * scale));
fprintf(fd, "%f %f scale\n1 0 translate 90 rotate\n",
psheight * scale, pswidth * scale);
break;
case 180:
fprintf(fd, "%f %f translate\n",
left_offset ? left_offset : 0.0,
bottom_offset ? bottom_offset
: reqheight - (psheight * scale));
fprintf(fd, "%f %f scale\n1 1 translate 180 rotate\n",
pswidth * scale, psheight * scale);
break;
case 270:
fprintf(fd, "%f %f translate\n",
left_offset ? left_offset : 0.0,
bottom_offset ? bottom_offset
: reqheight - (pswidth * scale));
fprintf(fd, "%f %f scale\n0 1 translate 270 rotate\n",
psheight * scale, pswidth * scale);
break;
default:
TIFFError("psScaleImage", "Unsupported rotation %d", rotation);
fprintf(fd, "%f %f scale\n", pswidth * scale, psheight * scale);
return (1);
}
}
return (0);
}
/* This controls the visible portion of the page which is displayed.
* N.B. Setting maxPageHeight no longer sets pageheight if not set explicitly
*/
int psPageSize(FILE *fd, int rotation, double pgwidth, double pgheight,
double reqwidth, double reqheight, double pswidth,
double psheight)
{
double xscale = 1.0, yscale = 1.0, scale = 1.0;
double splitheight;
double splitwidth;
double new_width;
double new_height;
splitheight = maxPageHeight * PS_UNIT_SIZE;
splitwidth = maxPageWidth * PS_UNIT_SIZE;
switch (rotation)
{
case 0:
case 180:
if ((splitheight > 0) || (splitwidth > 0))
{
if (pgwidth != 0 || pgheight != 0)
{
xscale = reqwidth / (splitwidth ? splitwidth : pswidth);
yscale = reqheight / (splitheight ? splitheight : psheight);
scale = (xscale < yscale) ? xscale : yscale;
}
new_width = splitwidth ? splitwidth : scale * pswidth;
new_height = splitheight ? splitheight : scale * psheight;
if (strlen(pageOrientation))
fprintf(fd, "%%%%PageOrientation: %s\n", pageOrientation);
else
fprintf(fd, "%%%%PageOrientation: %s\n",
(new_width > new_height) ? "Landscape"
: "Portrait");
fprintf(fd,
"%%%%PageBoundingBox: 0 0 %" PRId32 " %" PRId32 "\n",
(int32_t)new_width, (int32_t)new_height);
fprintf(fd,
"1 dict begin /PageSize [ %f %f ] def currentdict end "
"setpagedevice\n",
new_width, new_height);
}
else /* No viewport defined with -H or -W */
{
if ((pgwidth == 0) && (pgheight == 0)) /* Image not scaled */
{
if (strlen(pageOrientation))
fprintf(fd, "%%%%PageOrientation: %s\n",
pageOrientation);
else
fprintf(fd, "%%%%PageOrientation: %s\n",
(pswidth > psheight) ? "Landscape"
: "Portrait");
fprintf(fd,
"%%%%PageBoundingBox: 0 0 %" PRId32 " %" PRId32
"\n",
(int32_t)pswidth, (int32_t)psheight);
fprintf(fd,
"1 dict begin /PageSize [ %f %f ] def currentdict "
"end setpagedevice\n",
pswidth, psheight);
}
else /* Image scaled */
{
if (strlen(pageOrientation))
fprintf(fd, "%%%%PageOrientation: %s\n",
pageOrientation);
else
fprintf(fd, "%%%%PageOrientation: %s\n",
(reqwidth > reqheight) ? "Landscape"
: "Portrait");
fprintf(fd,
"%%%%PageBoundingBox: 0 0 %" PRId32 " %" PRId32
"\n",
(int32_t)reqwidth, (int32_t)reqheight);
fprintf(fd,
"1 dict begin /PageSize [ %f %f ] def currentdict "
"end setpagedevice\n",
reqwidth, reqheight);
}
}
break;
case 90:
case 270:
if ((splitheight > 0) || (splitwidth > 0))
{
if (pgwidth != 0 || pgheight != 0)
{
xscale = reqwidth / (splitwidth ? splitwidth : pswidth);
yscale = reqheight / (splitheight ? splitheight : psheight);
scale = (xscale < yscale) ? xscale : yscale;
}
new_width = splitwidth ? splitwidth : scale * psheight;
new_height = splitheight ? splitheight : scale * pswidth;
if (strlen(pageOrientation))
fprintf(fd, "%%%%PageOrientation: %s\n", pageOrientation);
else
fprintf(fd, "%%%%PageOrientation: %s\n",
(new_width > new_height) ? "Landscape"
: "Portrait");
fprintf(fd,
"%%%%PageBoundingBox: 0 0 %" PRId32 " %" PRId32 "\n",
(int32_t)new_width, (int32_t)new_height);
fprintf(fd,
"1 dict begin /PageSize [ %f %f ] def currentdict end "
"setpagedevice\n",
new_width, new_height);
}
else
{
if ((pgwidth == 0) && (pgheight == 0)) /* Image not scaled */
{
if (strlen(pageOrientation))
fprintf(fd, "%%%%PageOrientation: %s\n",
pageOrientation);
else
fprintf(fd, "%%%%PageOrientation: %s\n",
(psheight > pswidth) ? "Landscape"
: "Portrait");
fprintf(fd,
"%%%%PageBoundingBox: 0 0 %" PRId32 " %" PRId32
"\n",
(int32_t)psheight, (int32_t)pswidth);
fprintf(fd,
"1 dict begin /PageSize [ %f %f ] def currentdict "
"end setpagedevice\n",
psheight, pswidth);
}
else /* Image scaled */
{
if (strlen(pageOrientation))
fprintf(fd, "%%%%PageOrientation: %s\n",
pageOrientation);
else
fprintf(fd, "%%%%PageOrientation: %s\n",
(reqwidth > reqheight) ? "Landscape"
: "Portrait");
fprintf(fd,
"%%%%PageBoundingBox: 0 0 %" PRId32 " %" PRId32
"\n",
(int32_t)reqwidth, (int32_t)reqheight);
fprintf(fd,
"1 dict begin /PageSize [ %f %f ] def currentdict "
"end setpagedevice\n",
reqwidth, reqheight);
}
}
break;
default:
TIFFError("psPageSize", "Invalid rotation %d", rotation);
return (1);
}
fputs("<<\n /Policies <<\n /PageSize 3\n >>\n>> setpagedevice\n", fd);
return (0);
} /* end psPageSize */
/* Mask an image as a series of pages, each only showing a section defined
* by the maxPageHeight or maxPageWidth options.
*/
int psMaskImage(FILE *fd, TIFF *tif, int rotation, int center, int *npages,
double pixwidth, double pixheight, double left_margin,
double bottom_margin, double pgwidth, double pgheight,
double pswidth, double psheight, double scale)
{
int i, j;
int ximages = 1, yimages = 1;
int pages = *npages;
double view_width = 0;
double view_height = 0;
if (get_viewport(pgwidth, pgheight, pswidth, psheight, &view_width,
&view_height, rotation))
{
TIFFError("get_viewport", "Unable to set image viewport");
return (-1);
}
if (get_subimage_count(pgwidth, pgheight, pswidth, psheight, &ximages,
&yimages, rotation, scale) < 1)
{
TIFFError("get_subimage_count",
"Invalid image count: %d columns, %d rows", ximages, yimages);
return (-1);
}
for (i = 0; i < yimages; i++)
{
for (j = 0; j < ximages; j++)
{
pages++;
*npages = pages;
fprintf(fd, "%%%%Page: %d %d\n", pages, pages);
/* Write out the PageSize info for non EPS files */
if (!generateEPSF && (level2 || level3))
{
if (psPageSize(fd, rotation, pgwidth, pgheight, view_width,
view_height, pswidth, psheight))
return (-1);
}
fprintf(fd, "gsave\n");
fprintf(fd, "100 dict begin\n");
if (exportMaskedImage(fd, view_width, view_height, pswidth,
psheight, i, j, left_margin, bottom_margin,
scale, center, rotation))
{
TIFFError("exportMaskedImage", "Invalid image parameters.");
return (-1);
}
PSpage(fd, tif, pixwidth, pixheight);
fprintf(fd, "end\n");
fprintf(fd, "grestore\n");
fprintf(fd, "showpage\n");
}
}
return (pages);
}
/* Compute scale factor and write out file header */
int psStart(FILE *fd, int npages, int auto_rotate, int *rotation, double *scale,
double ox, double oy, double pgwidth, double pgheight,
double reqwidth, double reqheight, double pswidth, double psheight,
double left_offset, double bottom_offset)
{
double maxsource = 0.0; /* Used for auto rotations */
double maxtarget = 0.0;
double xscale = 1.0, yscale = 1.0;
double splitheight;
double splitwidth;
double view_width = 0.0, view_height = 0.0;
double page_width = 0.0, page_height = 0.0;
/* Splitheight and splitwidth are in inches */
splitheight = maxPageHeight * PS_UNIT_SIZE;
splitwidth = maxPageWidth * PS_UNIT_SIZE;
page_width = pgwidth * PS_UNIT_SIZE;
page_height = pgheight * PS_UNIT_SIZE;
/* If user has specified a page width and height and requested the
* image to be auto-rotated to fit on that media, we match the
* longest dimension of the image to the longest dimension of the
* target media but we have to ignore auto rotate if user specified
* maxPageHeight since this makes life way too complicated. */
if (auto_rotate)
{
if ((splitheight != 0) || (splitwidth != 0))
{
TIFFError("psStart",
"Auto-rotate is incompatible with page splitting ");
return (1);
}
/* Find longest edges in image and output media */
maxsource = (pswidth >= psheight) ? pswidth : psheight;
maxtarget = (reqwidth >= reqheight) ? reqwidth : reqheight;
if (((maxsource == pswidth) && (maxtarget != reqwidth)) ||
((maxsource == psheight) && (maxtarget != reqheight)))
{ /* optimal orientation does not match input orientation */
*rotation = 90;
xscale = (reqwidth - left_offset) / psheight;
yscale = (reqheight - bottom_offset) / pswidth;
}
else /* optimal orientation matches input orientation */
{
xscale = (reqwidth - left_offset) / pswidth;
yscale = (reqheight - bottom_offset) / psheight;
}
*scale = (xscale < yscale) ? xscale : yscale;
/* Do not scale image beyond original size */
if (*scale > 1.0)
*scale = 1.0;
/* Set the size of the displayed image to requested page size
* and optimal orientation.
*/
if (!npages)
PSHead(fd, reqwidth, reqheight, ox, oy);
return (0);
}
/* N.B. If pgwidth or pgheight are set from maxPageHeight/Width,
* we have a problem with the tests below under splitheight.
*/
switch (*rotation) /* Auto rotate has NOT been specified */
{
case 0:
case 180:
if ((splitheight != 0) || (splitwidth != 0))
{ /* Viewport clipped to maxPageHeight or maxPageWidth */
if ((page_width != 0) || (page_height != 0)) /* Image scaled */
{
xscale = (reqwidth - left_offset) /
(page_width ? page_width : pswidth);
yscale = (reqheight - bottom_offset) /
(page_height ? page_height : psheight);
*scale = (xscale < yscale) ? xscale : yscale;
/*
if (*scale > 1.0)
*scale = 1.0;
*/
}
else /* Image clipped but not scaled */
*scale = 1.0;
view_width = splitwidth ? splitwidth : *scale * pswidth;
view_height = splitheight ? splitheight : *scale * psheight;
}
else /* Viewport not clipped to maxPageHeight or maxPageWidth */
{
if ((page_width != 0) || (page_height != 0))
{ /* Image scaled */
xscale = (reqwidth - left_offset) / pswidth;
yscale = (reqheight - bottom_offset) / psheight;
view_width = reqwidth;
view_height = reqheight;
}
else
{ /* Image not scaled */
xscale = (pswidth - left_offset) / pswidth;
yscale = (psheight - bottom_offset) / psheight;
view_width = pswidth;
view_height = psheight;
}
}
break;
case 90:
case 270:
if ((splitheight != 0) || (splitwidth != 0))
{ /* Viewport clipped to maxPageHeight or maxPageWidth */
if ((page_width != 0) || (page_height != 0)) /* Image scaled */
{
xscale = (reqwidth - left_offset) / psheight;
yscale = (reqheight - bottom_offset) / pswidth;
*scale = (xscale < yscale) ? xscale : yscale;
/*
if (*scale > 1.0)
*scale = 1.0;
*/
}
else /* Image clipped but not scaled */
*scale = 1.0;
view_width = splitwidth ? splitwidth : *scale * psheight;
view_height = splitheight ? splitheight : *scale * pswidth;
}
else /* Viewport not clipped to maxPageHeight or maxPageWidth */
{
if ((page_width != 0) || (page_height != 0)) /* Image scaled */
{
xscale = (reqwidth - left_offset) / psheight;
yscale = (reqheight - bottom_offset) / pswidth;
view_width = reqwidth;
view_height = reqheight;
}
else
{
xscale = (pswidth - left_offset) / psheight;
yscale = (psheight - bottom_offset) / pswidth;
view_width = psheight;
view_height = pswidth;
}
}
break;
default:
TIFFError("psPageSize", "Invalid rotation %d", *rotation);
return (1);
}
if (!npages)
PSHead(fd, (page_width ? page_width : view_width),
(page_height ? page_height : view_height), ox, oy);
*scale = (xscale < yscale) ? xscale : yscale;
if (*scale > 1.0)
*scale = 1.0;
return (0);
}
int get_viewport(double pgwidth, double pgheight, double pswidth,
double psheight, double *view_width, double *view_height,
int rotation)
{
/* Only one of maxPageHeight or maxPageWidth can be specified */
if (maxPageHeight !=
0) /* Clip the viewport to maxPageHeight on each page */
{
if (pgheight != 0 && pgheight < maxPageHeight)
*view_height = pgheight * PS_UNIT_SIZE;
else
*view_height = maxPageHeight * PS_UNIT_SIZE;
/*
* if (res_unit == RESUNIT_CENTIMETER)
* *view_height /= 2.54F;
*/
}
else
{
if (pgheight != 0) /* User has set PageHeight with -h flag */
{
*view_height =
pgheight *
PS_UNIT_SIZE; /* Postscript size for Page Height in inches */
/* if (res_unit == RESUNIT_CENTIMETER)
* *view_height /= 2.54F;
*/
}
else /* If no width or height are specified, use the original size from
image */
switch (rotation)
{
default:
case 0:
case 180:
*view_height = psheight;
break;
case 90:
case 270:
*view_height = pswidth;
break;
}
}
if (maxPageWidth != 0) /* Clip the viewport to maxPageWidth on each page */
{
if (pgwidth != 0 && pgwidth < maxPageWidth)
*view_width = pgwidth * PS_UNIT_SIZE;
else
*view_width = maxPageWidth * PS_UNIT_SIZE;
/* if (res_unit == RESUNIT_CENTIMETER)
* *view_width /= 2.54F;
*/
}
else
{
if (pgwidth != 0) /* User has set PageWidth with -w flag */
{
*view_width =
pgwidth *
PS_UNIT_SIZE; /* Postscript size for Page Width in inches */
/* if (res_unit == RESUNIT_CENTIMETER)
* *view_width /= 2.54F;
*/
}
else /* If no width or height are specified, use the original size from
image */
switch (rotation)
{
default:
case 0:
case 180:
*view_width = pswidth;
break;
case 90:
case 270:
*view_width =
psheight; /* (*view_height / psheight) * psheight; */
break;
}
}
return (0);
}
/* pgwidth and pgheight specify page width and height in inches from -h and -w
* flags lm and bm are the LeftMargin and BottomMargin in inches center causes
* the image to be centered on the page if the paper size is larger than the
* image size returns the sequence number of the page processed or -1 on error
*/
int TIFF2PS(FILE *fd, TIFF *tif, double pgwidth, double pgheight, double lm,
double bm, int center)
{
uint32_t pixwidth = 0, pixheight = 0; /* Image width and height in pixels */
double ox = 0.0, oy = 0.0; /* Offset from current Postscript origin */
double pswidth,
psheight; /* Original raw image width and height in points */
double view_width, view_height; /* Viewport width and height in points */
double scale = 1.0;
double left_offset = lm * PS_UNIT_SIZE;
double bottom_offset = bm * PS_UNIT_SIZE;
uint32_t subfiletype;
uint16_t *sampleinfo;
static int npages = 0;
if (!TIFFGetField(tif, TIFFTAG_XPOSITION, &ox))
ox = 0;
if (!TIFFGetField(tif, TIFFTAG_YPOSITION, &oy))
oy = 0;
/* Consolidated all the tag information into one code segment, Richard Nolde
*/
do
{
tf_numberstrips = TIFFNumberOfStrips(tif);
TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP, &tf_rowsperstrip);
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;
}
}
/* Read image tags for width and height in pixels pixwidth, pixheight,
* and convert to points pswidth, psheight
*/
setupPageState(tif, &pixwidth, &pixheight, &pswidth, &psheight);
view_width = pswidth;
view_height = psheight;
if (get_viewport(pgwidth, pgheight, pswidth, psheight, &view_width,
&view_height, rotation))
{
TIFFError("get_viewport", "Unable to set image viewport");
return (1);
}
/* Write the Postscript file header with Bounding Box and Page Size
* definitions */
if (psStart(fd, npages, auto_rotate, &rotation, &scale, ox, oy, pgwidth,
pgheight, view_width, view_height, pswidth, psheight,
left_offset, bottom_offset))
return (-1);
if (checkImage(tif)) /* Aborts if unsupported image parameters */
{
tf_bytesperrow = TIFFScanlineSize(tif);
/* Set viewport clipping and scaling options */
if ((maxPageHeight) || (maxPageWidth) || (pgwidth != 0) ||
(pgheight != 0))
{
if ((maxPageHeight) ||
(maxPageWidth)) /* used -H or -W option */
{
if (psMaskImage(fd, tif, rotation, center, &npages,
pixwidth, pixheight, left_offset,
bottom_offset, pgwidth, pgheight, pswidth,
psheight, scale) < 0)
return (-1);
}
else /* N.B. Setting maxPageHeight no longer sets pgheight */
{
if (pgwidth != 0 || pgheight != 0)
{
/* User did not specify a maximum page height or width
* using -H or -W flag but did use -h or -w flag to
* scale to a specific size page.
*/
npages++;
fprintf(fd, "%%%%Page: %d %d\n", npages, npages);
if (!generateEPSF && (level2 || level3))
{
/* Write out the PageSize info for non EPS files */
if (psPageSize(fd, rotation, pgwidth, pgheight,
view_width, view_height, pswidth,
psheight))
return (-1);
}
fprintf(fd, "gsave\n");
fprintf(fd, "100 dict begin\n");
if (psScaleImage(fd, scale, rotation, center,
view_width, view_height, pswidth,
psheight, left_offset, bottom_offset))
return (-1);
PSpage(fd, tif, pixwidth, pixheight);
fprintf(fd, "end\n");
fprintf(fd, "grestore\n");
fprintf(fd, "showpage\n");
}
}
}
else /* Simple rotation: user did not use -H, -W, -h or -w */
{
npages++;
fprintf(fd, "%%%%Page: %d %d\n", npages, npages);
if (!generateEPSF && (level2 || level3))
{
/* Write out the PageSize info for non EPS files */
if (psPageSize(fd, rotation, pgwidth, pgheight, view_width,
view_height, pswidth, psheight))
return (-1);
}
fprintf(fd, "gsave\n");
fprintf(fd, "100 dict begin\n");
if (psRotateImage(fd, rotation, pswidth, psheight, left_offset,
bottom_offset))
return (-1);
PSpage(fd, tif, pixwidth, pixheight);
fprintf(fd, "end\n");
fprintf(fd, "grestore\n");
fprintf(fd, "showpage\n");
}
}
if (generateEPSF)
break;
if (auto_rotate)
rotation = 0.0;
TIFFGetFieldDefaulted(tif, TIFFTAG_SUBFILETYPE, &subfiletype);
} while (((subfiletype & FILETYPE_PAGE) || printAll) &&
TIFFReadDirectory(tif));
return (npages);
}
static const 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 const 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 const 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, double pagewidth, double pageheight, double xoff,
double yoff)
{
time_t t;
t = time(0);
fprintf(fd, "%%!PS-Adobe-3.0%s\n", generateEPSF ? " EPSF-3.0" : "");
fprintf(fd, "%%%%Creator: %s\n", creator ? creator : "tiff2ps");
fprintf(fd, "%%%%Title: %s\n", title ? title : filename);
fprintf(fd, "%%%%CreationDate: %s", ctime(&t));
fprintf(fd, "%%%%DocumentData: Clean7Bit\n");
/* NB: should use PageBoundingBox for each page instead of BoundingBox *
* PageBoundingBox DSC added in PSPageSize function, R Nolde 09-01-2010
*/
fprintf(fd, "%%%%Origin: %" PRId32 " %" PRId32 "\n", (int32_t)xoff,
(int32_t)yoff);
fprintf(fd, "%%%%BoundingBox: 0 0 %" PRId32 " %" PRId32 "\n",
(int32_t)ceil(pagewidth), (int32_t)ceil(pageheight));
fprintf(fd, "%%%%LanguageLevel: %d\n", (level3 ? 3 : (level2 ? 2 : 1)));
if (generateEPSF == TRUE)
fprintf(fd, "%%%%Pages: 1 1\n");
else
fprintf(fd, "%%%%Pages: (atend)\n");
fprintf(fd, "%%%%EndComments\n");
if (generateEPSF == FALSE)
{
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 PSTail(FILE *fd, int npages)
{
fprintf(fd, "%%%%Trailer\n");
if (generateEPSF == FALSE)
fprintf(fd, "%%%%Pages: %d\n", npages);
fprintf(fd, "%%%%EOF\n");
}
static int checkcmap(TIFF *tif, int n, uint16_t *r, uint16_t *g, uint16_t *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_t *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 reference 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, "%02" PRIx16 "%02" PRIx16 "%02" PRIx16 "", 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_t w, uint32_t h)
{
int use_rawdata;
uint32_t tile_width, tile_height;
uint16_t predictor, minsamplevalue, maxsamplevalue;
uint32_t repeat_count;
char im_h[64], im_x[64], im_y[64];
const char *imageOp = "image";
if (useImagemask && (bitspersample == 1))
imageOp = "imagemask";
(void)strcpy(im_x, "0");
(void)snprintf(im_y, sizeof(im_y), "%" PRIu32, h);
(void)snprintf(im_h, sizeof(im_h), "%" PRIu32, 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)snprintf(im_y, sizeof(im_y), "%" PRIu32 " im_y sub", 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 %" PRIu32 " def\n", tile_height);
(void)strcpy(im_h, "im_h");
(void)snprintf(im_y, sizeof(im_y), "%" PRIu32 " im_y sub", h);
}
}
/*
* Output start of exec block
*/
fputs("{ % exec\n", fd);
if (repeat_count > 1)
fprintf(fd, "%" PRIu32 " { %% 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 %" PRIu32 "\n", 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 %" PRIu32 "\n", tile_height);
else
fprintf(fd, " /Height im_h\n");
if (planarconfiguration == PLANARCONFIG_SEPARATE && samplesperpixel > 1)
fputs(" /MultipleDataSources true\n", fd);
fprintf(fd, " /ImageMatrix [ %" PRIu32 " 0 0 %" PRId32 " %s %s ]\n", w,
-(int32_t)h, im_x, im_y);
fprintf(fd, " /BitsPerComponent %" PRIu16 "\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 might 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 [%" PRIu16 " %" PRIu16 "]\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_t 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_t 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 %" PRIu32 "\n", 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 %" PRIu16 "\n", predictor);
fprintf(fd, "\t /Columns %" PRIu32 "\n", tile_width);
fprintf(fd, "\t /Colors %" PRIu16 "\n", samplesperpixel);
fprintf(fd, "\t /BitsPerComponent %" PRIu16 "\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 %" PRIu16 "\n", predictor);
fprintf(fd, "\t /Columns %" PRIu32 "\n", tile_width);
fprintf(fd, "\t /Colors %" PRIu16 "\n", samplesperpixel);
fprintf(fd, "\t /BitsPerComponent %" PRIu16 "\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_t 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 %" PRIu32 " add def\n", tile_width);
if (tile_height < h)
{
fprintf(fd, " im_x %" PRIu32 " ge {\n", w);
fputs(" /im_x 0 def\n", fd);
fprintf(fd, " /im_y im_y %" PRIu32 " add def\n", tile_height);
fputs(" } if\n", fd);
}
}
if (tile_height < h)
{
if (tile_width >= w)
{
fprintf(fd, " /im_y im_y %" PRIu32 " add def\n", tile_height);
if (!TIFFIsTiled(tif))
{
fprintf(fd, " /im_h %" PRIu32 " im_y sub", h);
fprintf(fd, " dup %" PRIu32 " gt { pop", tile_height);
fprintf(fd, " %" PRIu32 " } if def\n", tile_height);
}
}
}
fputs("} repeat\n", fd);
}
/*
* End of exec function
*/
fputs("}\n", fd);
return (use_rawdata);
}
/* Flip the byte order of buffers with 16 bit samples */
static void PS_FlipBytes(unsigned char *buf, tsize_t count)
{
int i;
unsigned char temp;
if (count <= 0 || bitspersample <= 8)
{
return;
}
count--;
for (i = 0; i < count; i += 2)
{
temp = buf[i];
buf[i] = buf[i + 1];
buf[i + 1] = temp;
}
}
#define MAXLINE 36
int PS_Lvl2page(FILE *fd, TIFF *tif, uint32_t w, uint32_t h)
{
uint16_t fillorder;
int use_rawdata, tiled_image, breaklen = MAXLINE;
uint32_t chunk_no, num_chunks;
uint64_t *bc;
unsigned char *buf_data, *cp;
tsize_t chunk_size, byte_count;
#if defined(EXP_ASCII85ENCODER)
tsize_t ascii85_l; /* Length, in bytes, of ascii85_p[] data */
uint8_t *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 *)limitMalloc(chunk_size);
if (!buf_data)
{
TIFFError(filename, "Can't alloc %" TIFF_SSIZE_FORMAT " 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 = limitMalloc((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 %" PRIu32 ".",
tiled_image ? "tile" : "strip", chunk_no);
if (ascii85)
Ascii85Put('\0', fd);
}
/*
* for 16 bits, the two bytes must be most significant
* byte first
*/
if (bitspersample == 16 && !TIFFIsBigEndian(tif))
{
PS_FlipBytes(buf_data, byte_count);
}
/*
* 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 + ncomps) < 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_t w, uint32_t 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 %" TIFF_SSIZE_FORMAT " string def\n",
ps_bytesperrow * 3);
fprintf(fd, "%" PRIu32 " %" PRIu32 " 8\n", w, h);
fprintf(fd, "[%" PRIu32 " 0 0 -%" PRIu32 " 0 %" PRIu32 "]\n", w, h,
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 %" TIFF_SSIZE_FORMAT " string def\n",
ps_bytesperrow);
fprintf(fd, "%" PRIu32 " %" PRIu32 " %" PRIu16 "\n", w, h,
bitspersample);
fprintf(fd, "[%" PRIu32 " 0 0 -%" PRIu32 " 0 %" PRIu32 "]\n", w, h,
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_t w, uint32_t h, int nc)
{
ps_bytesperrow = nc * (tf_bytesperrow / samplesperpixel);
PhotoshopBanner(fd, w, h, 1, nc, "false %d colorimage");
fprintf(fd, "/line %" TIFF_SSIZE_FORMAT " string def\n", ps_bytesperrow);
fprintf(fd, "%" PRIu32 " %" PRIu32 " %" PRIu16 "\n", w, h, bitspersample);
fprintf(fd, "[%" PRIu32 " 0 0 -%" PRIu32 " 0 %" PRIu32 "]\n", w, h, h);
fprintf(fd, "{currentfile line readhexstring pop} bind\n");
fprintf(fd, "false %d colorimage\n", nc);
}
void PSColorSeparatePreamble(FILE *fd, uint32_t w, uint32_t 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 %" TIFF_SSIZE_FORMAT " string def\n", i,
ps_bytesperrow);
fprintf(fd, "%" PRIu32 " %" PRIu32 " %" PRIu16 "\n", w, h, bitspersample);
fprintf(fd, "[%" PRIu32 " 0 0 -%" PRIu32 " 0 %" PRIu32 "] \n", w, h, 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); \
}
static inline void puthex(unsigned int c, FILE *fd)
{
putc(hex[((c) >> 4) & 0xf], fd);
putc(hex[(c)&0xf], fd);
}
void PSDataColorContig(FILE *fd, TIFF *tif, uint32_t w, uint32_t h, int nc)
{
uint32_t row;
int breaklen = MAXLINE, es = samplesperpixel - nc;
tsize_t cc;
unsigned char *tf_buf;
unsigned char *cp, c;
(void)w;
if (es < 0)
{
TIFFError(filename,
"Inconsistent value of es: %d (samplesperpixel=%" PRIu16
", nc=%d)",
es, samplesperpixel, nc);
return;
}
tf_buf = (unsigned char *)limitMalloc(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;
/*
* for 16 bits, the two bytes must be most significant
* byte first
*/
if (bitspersample == 16 && !HOST_BIGENDIAN)
{
PS_FlipBytes(cp, tf_bytesperrow);
}
if (alpha)
{
int adjust;
/*
* the code inside this loop reads nc bytes + 1 extra byte (for
* adjust)
*/
for (cc = 0; (cc + nc) < 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];
for (int i = 0; i < nc; ++i)
{
c = *cp++ + adjust;
puthex(c, fd);
}
cp += es;
}
}
else
{
/*
* the code inside this loop reads nc bytes per iteration
*/
for (cc = 0; (cc + nc) <= tf_bytesperrow; cc += samplesperpixel)
{
DOBREAK(breaklen, nc, fd);
for (int i = 0; i < nc; ++i)
{
c = *cp++;
puthex(c, fd);
}
cp += es;
}
}
}
_TIFFfree((char *)tf_buf);
}
void PSDataColorSeparate(FILE *fd, TIFF *tif, uint32_t w, uint32_t h, int nc)
{
uint32_t row;
int breaklen = MAXLINE;
tsize_t cc;
tsample_t s, maxs;
unsigned char *tf_buf;
unsigned char *cp, c;
(void)w;
tf_buf = (unsigned char *)limitMalloc(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)
goto end_loop;
for (cp = tf_buf, cc = 0; cc < tf_bytesperrow; cc++)
{
DOBREAK(breaklen, 1, fd);
c = *cp++;
puthex(c, fd);
}
}
}
end_loop:
_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_t w, uint32_t h)
{
uint16_t *rmap, *gmap, *bmap;
uint32_t row;
int breaklen = MAXLINE, nc;
tsize_t cc;
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 %" PRIu16 " not supported",
bitspersample);
return;
}
nc = 3 * (8 / bitspersample);
tf_buf = (unsigned char *)limitMalloc(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)
goto end_loop;
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;
}
}
}
end_loop:
_TIFFfree((char *)tf_buf);
}
void PSDataBW(FILE *fd, TIFF *tif, uint32_t w, uint32_t h)
{
int breaklen = MAXLINE;
unsigned char *tf_buf;
unsigned char *cp;
tsize_t stripsize = TIFFStripSize(tif);
tstrip_t s;
#if defined(EXP_ASCII85ENCODER)
tsize_t ascii85_l; /* Length, in bytes, of ascii85_p[] data */
uint8_t *ascii85_p = 0; /* Holds ASCII85 encoded data */
#endif
(void)w;
(void)h;
tf_buf = (unsigned char *)limitMalloc(stripsize);
if (tf_buf == NULL)
{
TIFFError(filename, "No space for scanline buffer");
return;
}
// FIXME
memset(tf_buf, 0, stripsize);
#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 = limitMalloc((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++)
{
tmsize_t 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++;
}
/*
* for 16 bits, the two bytes must be most significant
* byte first
*/
if (bitspersample == 16 && !HOST_BIGENDIAN)
{
PS_FlipBytes(cp, cc);
}
if (ascii85)
{
#if defined(EXP_ASCII85ENCODER)
if (alpha)
{
int adjust, i;
for (i = 0; i < (cc - 1); 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-- > 1)
{
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);
}
void PSRawDataBW(FILE *fd, TIFF *tif, uint32_t w, uint32_t h)
{
uint64_t *bc;
uint32_t bufsize;
int breaklen = MAXLINE;
tmsize_t cc;
uint16_t fillorder;
unsigned char *tf_buf;
unsigned char *cp, c;
tstrip_t s;
#if defined(EXP_ASCII85ENCODER)
tsize_t ascii85_l; /* Length, in bytes, of ascii85_p[] data */
uint8_t *ascii85_p = 0; /* Holds ASCII85 encoded data */
#endif
(void)w;
(void)h;
TIFFGetFieldDefaulted(tif, TIFFTAG_FILLORDER, &fillorder);
TIFFGetField(tif, TIFFTAG_STRIPBYTECOUNTS, &bc);
/*
* Find largest strip:
*/
bufsize = (uint32_t)bc[0];
for (s = 0; ++s < tf_numberstrips;)
{
if (bc[s] > bufsize)
bufsize = (uint32_t)bc[s];
}
tf_buf = (unsigned char *)limitMalloc(bufsize);
if (tf_buf == NULL)
{
TIFFError(filename, "No space for strip 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*bufsize/4) plus the EOD marker (+8)
* and formatting line breaks. The line breaks are more
* than taken care of by using 6*bufsize/4 rather than
* 5*bufsize/4.
*/
ascii85_p = limitMalloc((bufsize + (bufsize / 2)) + 8);
if (!ascii85_p)
{
_TIFFfree(tf_buf);
TIFFError(filename, "Cannot allocate ASCII85 encoding buffer.");
return;
}
}
#endif
for (s = 0; s < tf_numberstrips; s++)
{
cc = TIFFReadRawStrip(tif, s, tf_buf, (tmsize_t)bc[s]);
if (cc < 0)
{
TIFFError(filename, "Can't read strip");
break;
}
if (fillorder == FILLORDER_LSB2MSB)
TIFFReverseBits(tf_buf, cc);
if (!ascii85)
{
for (cp = tf_buf; cc > 0; cc--)
{
DOBREAK(breaklen, 1, fd);
c = *cp++;
puthex(c, fd);
}
fputs(">\n", fd);
breaklen = MAXLINE;
}
else
{
Ascii85Init();
#if defined(EXP_ASCII85ENCODER)
ascii85_l = Ascii85EncodeBlock(ascii85_p, 1, tf_buf, cc);
if (ascii85_l > 0)
fwrite(ascii85_p, ascii85_l, 1, fd);
#else
for (cp = tf_buf; cc > 0; cc--)
Ascii85Put(*cp++, fd);
Ascii85Flush(fd);
#endif /* EXP_ASCII85ENCODER */
}
}
_TIFFfree((char *)tf_buf);
#if defined(EXP_ASCII85ENCODER)
if (ascii85_p)
_TIFFfree(ascii85_p);
#endif
}
void Ascii85Init(void)
{
ascii85breaklen = 2 * MAXLINE;
ascii85count = 0;
}
static char *Ascii85Encode(unsigned char *raw)
{
static char encoded[6];
uint32_t word;
word = (((raw[0] << 8) + raw[1]) << 16) + (raw[2] << 8) + raw[3];
if (word != 0L)
{
uint32_t q;
uint16_t 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_t)(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.
*
*****************************************************************************/
tsize_t Ascii85EncodeBlock(uint8_t *ascii85_p, unsigned f_eod,
const uint8_t *raw_p, tsize_t raw_l)
{
char ascii85[5]; /* Encoded 5 tuple */
tsize_t ascii85_l; /* Number of bytes written to ascii85_p[] */
int rc; /* Return code */
uint32_t 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 = (uint32_t) * (++raw_p) << 24;
val32 += (uint32_t) * (++raw_p) << 16;
val32 += (uint32_t) * (++raw_p) << 8;
val32 += (uint32_t) * (++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)
{
tsize_t len; /* Output this many bytes */
len = raw_l + 1;
val32 = (uint32_t) * ++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 */
static const char usage_info[] =
"Convert a TIFF image to PostScript\n\n"
"usage: tiff2ps [options] input.tif ...\n"
"where options are:\n"
" -1 generate PostScript Level 1 (default)\n"
" -2 generate PostScript Level 2\n"
" -3 generate PostScript Level 3\n"
" -8 disable use of ASCII85 encoding with PostScript Level 2/3\n"
" -a convert all directories in file (default is first), Not "
"EPS\n"
" -b # set the bottom margin to # inches\n"
" -c center image (-b and -l still add to this)\n"
" -C name set postscript document creator name\n"
" -d # set initial directory to # counting from zero\n"
" -D enable duplex printing (two pages per sheet of paper)\n"
" -e generate Encapsulated PostScript (EPS) (implies -z)\n"
" -h # set printed page height to # inches (no default)\n"
" -w # set printed page width to # inches (no default)\n"
" -H # split image if height is more than # inches\n"
" -W # split image if width is more than # inches\n"
" -L # overLap split images by # inches\n"
" -i # enable/disable (Nz/0) pixel interpolation (default: "
"enable)\n"
" -l # set the left margin to # inches\n"
" -m use \"imagemask\" operator instead of \"image\"\n"
" -M size set the memory allocation limit in MiB. 0 to disable "
"limit\n"
" -o # convert directory at file offset # bytes\n"
" -O file write PostScript to file instead of standard output\n"
" -p generate regular (non-encapsulated) PostScript\n"
" -P L or P set optional PageOrientation DSC comment to Landscape or "
"Portrait\n"
" -r # or auto rotate by 90, 180, 270 degrees or auto\n"
" -s generate PostScript for a single image\n"
" -t name set postscript document title. Otherwise the filename is "
"used\n"
" -T print pages for top edge binding\n"
" -x override resolution units as centimeters\n"
" -y override resolution units as inches\n"
" -z enable printing in the deadzone (only for PostScript Level "
"2/3)\n";
static void usage(int code)
{
FILE *out = (code == EXIT_SUCCESS) ? stdout : stderr;
fprintf(out, "%s\n\n", TIFFGetVersion());
fprintf(out, "%s", usage_info);
exit(code);
}
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