cheng/libtiff
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
4e0d97f83c
libtiff/tools/tiff2ps.c
Bob Friesenhahn 4e0d97f83c * libtiff/tif_aux.c (_TIFFCheckRealloc): Improve error message so 
that it is clearly a memory allocation error message, and also
includes the size of the allocation request.
2010-03-10 18:56:48 +00:00

2380 lines
67 KiB
C
Raw Blame History

This file contains invisible Unicode characters

This file contains invisible Unicode characters that are indistinguishable to humans but may be processed differently by a computer. If you think that this is intentional, you can safely ignore this warning. Use the Escape button to reveal them.

/* $Id: tiff2ps.c,v 1.44 2010-03-10 18:56:50 bfriesen Exp $ */
/*
* 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 "tif_config.h"
#include <stdio.h>
#include <stdlib.h> /* for atof */
#include <math.h>
#include <time.h>
#include <string.h>
#ifdef HAVE_UNISTD_H
# include <unistd.h>
#endif
#ifdef NEED_LIBPORT
# include "libport.h"
#endif
#include "tiffio.h"
/*
* Revision history
*
* 2005-June-3
* 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. Auto rotates 90 degrees ccw to produce landscape.
*
* 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 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
#define HORIZONTAL 1
#define VERTICAL 2
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 rotate = FALSE; /* rotate image by angle 90, 180, 270 degrees */
int rotation = 0; /* optional value for rotation angle */
char *filename; /* input filename */
int useImagemask = FALSE; /* Use imagemask instead of image operator */
uint16 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, uint32);
void PSColorContigPreamble(FILE*, uint32, uint32, int);
void PSColorSeparatePreamble(FILE*, uint32, uint32, int);
void PSDataColorContig(FILE*, TIFF*, uint32, uint32, int);
void PSDataColorSeparate(FILE*, TIFF*, uint32, uint32, int);
void PSDataPalette(FILE*, TIFF*, uint32, uint32);
void PSDataBW(FILE*, TIFF*, uint32, uint32);
void PSRawDataBW(FILE*, TIFF*, uint32, uint32);
void Ascii85Init(void);
void Ascii85Put(unsigned char code, FILE* fd);
void Ascii85Flush(FILE* fd);
void PSHead(FILE*, TIFF*, uint32, uint32, double, double, double, double);
void PSTail(FILE*, int);
#if defined( EXP_ASCII85ENCODER)
tsize_t Ascii85EncodeBlock( uint8 * ascii85_p, unsigned f_eod, const uint8 * raw_p, tsize_t raw_l );
#endif
static void usage(int);
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 diroff = 0;
extern char *optarg;
extern int optind;
FILE* output = stdout;
while ((c = getopt(argc, argv, "b:d:h:H:W:L:i:w:l:o:O:r:acelmxyzps1238DT")) != -1)
switch (c) {
case 'b':
bottommargin = atof(optarg);
break;
case 'c':
centered = 1;
break;
case 'd':
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);
if (pageHeight==0) pageHeight = maxPageHeight;
break;
case 'W':
maxPageWidth = atof(optarg);
if (pageWidth==0) pageWidth = maxPageWidth;
break;
case 'L':
splitOverlap = atof(optarg);
break;
case 'm':
useImagemask = TRUE;
break;
case 'o':
diroff = (uint32) strtoul(optarg, NULL, 0);
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(-2);
}
break;
case 'l':
leftmargin = atof(optarg);
break;
case 'a':
printAll = TRUE;
/* fall thru... */
case 'p':
generateEPSF = FALSE;
break;
case 'r':
rotate = TRUE;
if (strcmp (optarg, "auto") == 0)
rotation = 0;
else
rotation = atoi(optarg);
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 (-2);
}
break;
case 's':
printAll = FALSE;
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(-1);
}
for (; argc - optind > 0; optind++) {
TIFF* tif = TIFFOpen(filename = argv[optind], "r");
if (tif != NULL) {
if (dirnum != -1
&& !TIFFSetDirectory(tif, (tdir_t)dirnum))
return (-1);
else if (diroff != 0 &&
!TIFFSetSubDirectory(tif, diroff))
return (-1);
np = TIFF2PS(output, tif, pageWidth, pageHeight,
leftmargin, bottommargin, centered);
TIFFClose(tif);
}
}
if (np)
PSTail(output, np);
else
usage(-1);
if (output != stdout)
fclose(output);
return (0);
}
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:
case 16:
break;
default:
TIFFError(filename, "Can not handle %d-bit/sample image",
bitspersample);
return (0);
}
if (planarconfiguration == PLANARCONFIG_SEPARATE && extrasamples > 0)
TIFFWarning(filename, "Ignoring extra samples");
return (1);
}
#define PS_UNIT_SIZE 72.0F
#define PSUNITS(npix,res) ((npix) * (PS_UNIT_SIZE / (res)))
static char RGBcolorimage[] = "\
/bwproc {\n\
rgbproc\n\
dup length 3 idiv string 0 3 0\n\
5 -1 roll {\n\
add 2 1 roll 1 sub dup 0 eq {\n\
pop 3 idiv\n\
3 -1 roll\n\
dup 4 -1 roll\n\
dup 3 1 roll\n\
5 -1 roll put\n\
1 add 3 0\n\
} { 2 1 roll } ifelse\n\
} forall\n\
pop pop pop\n\
} def\n\
/colorimage where {pop} {\n\
/colorimage {pop pop /rgbproc exch def {bwproc} image} bind def\n\
} ifelse\n\
";
/*
* Adobe Photoshop requires a comment line of the form:
*
* %ImageData: <cols> <rows> <depth> <main channels> <pad channels>
* <block size> <1 for binary|2 for hex> "data start"
*
* It is claimed to be part of some future revision of the EPS spec.
*/
static void
PhotoshopBanner(FILE* fd, uint32 w, uint32 h, int bs, int nc, char* startline)
{
fprintf(fd, "%%ImageData: %ld %ld %d %d 0 %d 2 \"",
(long) w, (long) h, bitspersample, nc, bs);
fprintf(fd, startline, nc);
fprintf(fd, "\"\n");
}
/*
* pw : image width in pixels
* ph : image height in pixels
* pprw : image width in PS units (72 dpi)
* pprh : image height in PS units (72 dpi)
*/
static void
setupPageState(TIFF* tif, uint32* pw, uint32* ph, double* pprw, double* pprh)
{
float xres = 0.0F, yres = 0.0F;
TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, pw);
TIFFGetField(tif, TIFFTAG_IMAGELENGTH, ph);
if (res_unit == 0)
TIFFGetFieldDefaulted(tif, TIFFTAG_RESOLUTIONUNIT, &res_unit);
/*
* Calculate printable area.
*/
if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres)
|| fabs(xres) < 0.0000001)
xres = PS_UNIT_SIZE;
if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres)
|| fabs(yres) < 0.0000001)
yres = PS_UNIT_SIZE;
switch (res_unit) {
case RESUNIT_CENTIMETER:
xres *= 2.54F, yres *= 2.54F;
break;
case RESUNIT_INCH:
break;
case RESUNIT_NONE:
default:
/*
* check that the resolution is not inches before scaling it
*/
if (xres != PS_UNIT_SIZE || yres != PS_UNIT_SIZE)
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
*/
int
PlaceImage(TIFF *tif, FILE *fp, int *npages, uint32 w, uint32 h,
double pagewidth, double pageheight,
double imagewidth, double imageheight,
int splitpage, double lm, double bm, int cnt)
{
int i = 0;
int ximages = 0;
int splitaxis = 0;
double xtran = 0;
double ytran = 0;
double xscale = 1;
double yscale = 1;
double left_margin = 0;
double bottom_margin = 0;
double left_offset = lm * PS_UNIT_SIZE;
double bottom_offset = bm * PS_UNIT_SIZE;
double splitwidth = 0;
double splitheight = 0;
double subimageheight = 0;
double subimagewidth = 0;
double overlap = 0;
double overlapspace = 0;
pagewidth *= PS_UNIT_SIZE;
pageheight *= PS_UNIT_SIZE;
splitheight = maxPageHeight * PS_UNIT_SIZE;
splitwidth = maxPageWidth * PS_UNIT_SIZE;
overlap = splitOverlap * PS_UNIT_SIZE;
/* These have to be mutually exclusive to maintain the aspect ratio */
if (splitheight != 0)
splitaxis = VERTICAL;
else {
if (splitwidth != 0)
splitaxis = HORIZONTAL;
else {
fprintf (stderr, "You must specify either a maximum page height or width\n");
return (0);
}
}
if (splitaxis == VERTICAL) {
if (imageheight <= splitheight) {
/* Simple case, no splitting or scaling for image height */
yscale = imageheight;
ytran = pageheight - imageheight;
} else { /* imageheight > splitheight */
subimageheight = imageheight - ((splitheight - overlap) * splitpage);
yscale = imageheight * (pageheight / splitheight);
ytran = pageheight - subimageheight * (pageheight / splitheight);
if (subimageheight > splitheight) {
splitpage++;
} else {
splitpage = 0;
}
}
bottom_offset += ytran / (cnt?2:1);
left_margin = left_offset / (cnt ? 2 : 1);
/*
* WIDTH: We can't rescale height based on width so we need to make multiple
* pages from each horizontal segment if the image is wider than pagewidth
*/
ximages = (int) ceil (imagewidth / pagewidth);
overlapspace = (ximages - 1) * overlap;
if (((imagewidth + overlapspace) * (pageheight / splitheight)) > (ximages * pagewidth)) {
ximages++;
overlapspace += overlap;
}
xscale = (imagewidth + overlapspace) * (pageheight / splitheight);
if (imagewidth <= pagewidth) {
left_offset = left_margin;
bottom_offset = bottom_margin;
fprintf(fp, "%f %f translate\n", left_offset, bottom_offset);
fprintf(fp, "%f %f scale\n", xscale, yscale);
} else {
for (i = 0; i < ximages; i++) {
xtran = i * (pagewidth - ((i > 0) ? overlap : 0));
left_offset = -xtran + left_margin;
fprintf(fp, "%f %f translate\n", left_offset, bottom_offset);
fprintf(fp, "%f %f scale\n", xscale, yscale);
if ( i < (ximages - 1)) {
PSpage(fp, tif, w, h);
fprintf(fp, "end\n");
fprintf(fp, "grestore\n");
fprintf(fp, "showpage\n");
(*npages)++;
fprintf(fp, "%%%%Page: %d %d\n", (*npages), (*npages));
fprintf(fp, "gsave\n");
fprintf(fp, "100 dict begin\n");
}
}
}
} else { /* splitaxis is HORIZONTAL */
ximages = (int) ceil (imagewidth / splitwidth);
overlapspace = (ximages - 1) * overlap;
if (((imagewidth + overlapspace) * (pagewidth / splitwidth)) > (ximages * pagewidth)) {
ximages++;
overlapspace += overlap;
}
if (ximages == 1) {
/* Simple case, no splitting or scaling for image width */
xscale = imagewidth;
xtran = 0;
splitpage = 0;
} else {
subimagewidth = imagewidth - ((splitwidth - overlap) * splitpage);
xscale = imagewidth * (pagewidth / splitwidth);
xtran = imagewidth - (subimagewidth * (pagewidth / splitwidth));
splitheight = pageheight;
subimageheight = imageheight - ((splitheight - overlap) * splitpage);
yscale = (imageheight + overlapspace);
ytran = pageheight - subimageheight + (overlapspace * (pagewidth / splitwidth));
if (subimageheight > splitheight) {
splitpage++;
} else {
splitpage = 0;
}
}
bottom_margin = bottom_offset / (cnt ? 2 : 1);
bottom_offset = bottom_margin + ytran;
left_margin = left_offset / (cnt ? 2 : 1);
if (imagewidth <= pagewidth) {
left_offset = left_margin;
bottom_offset = bottom_margin;
fprintf(fp, "%f %f translate\n", left_offset, bottom_offset);
fprintf(fp, "%f %f scale\n", xscale, yscale);
} else {
for (i = 0; i < ximages; i++) {
xtran = i * (pagewidth - ((i > 0) ? overlap : 0));
left_offset = left_margin - xtran;
fprintf(fp, "%f %f translate\n", left_offset, bottom_offset);
fprintf(fp, "%f %f scale\n", xscale, yscale);
if ( i < (ximages - 1)) {
PSpage(fp, tif, w, h);
fprintf(fp, "end\n");
fprintf(fp, "grestore\n");
fprintf(fp, "showpage\n");
(*npages)++;
fprintf(fp, "%%%%Page: %d %d\n", (*npages), (*npages));
fprintf(fp, "gsave\n");
fprintf(fp, "100 dict begin\n");
}
}
}
}
if (rotate)
{
if (rotation == 180 )
{
fprintf(fp, "%f %f translate\n", left_offset, bottom_offset);
fprintf(fp, "%f %f scale\n", xscale, yscale);
}
else
{
fprintf(fp, "%f %f translate\n", bottom_offset, left_offset);
fprintf(fp, "%f %f scale\n", yscale, xscale);
}
fprintf (fp, "1 1 translate %d rotate\n", rotation);
}
return splitpage;
}
/* returns the sequence number of the page processed */
int
TIFF2PS(FILE* fd, TIFF* tif,
double pw, double ph, double lm, double bm, int cnt)
{
uint32 w = 0, h = 0;
float ox, oy;
double maxsource, maxtarget; /* Used for auto rotations */
double hcenter, vcenter; /* Used for centering */
double prw, prh; /* Original Image width and height in Postscript points */
double psw, psh; /* Scaled image width and height in Postscript points */
double xscale = 1.0, yscale = 1.0, scale = 1.0;
double left_offset = lm * PS_UNIT_SIZE;
double bottom_offset = bm * PS_UNIT_SIZE;
uint32 subfiletype;
uint16* sampleinfo;
static int npages = 0;
int split;
if (!TIFFGetField(tif, TIFFTAG_XPOSITION, &ox))
ox = 0;
if (!TIFFGetField(tif, TIFFTAG_YPOSITION, &oy))
oy = 0;
do {
tf_numberstrips = TIFFNumberOfStrips(tif);
TIFFGetFieldDefaulted(tif, TIFFTAG_ROWSPERSTRIP,
&tf_rowsperstrip);
setupPageState(tif, &w, &h, &prw, &prh);
if (pw != 0) {
psw = pw * PS_UNIT_SIZE;
if (res_unit == RESUNIT_CENTIMETER)
psw *= 2.54F;
}
else
psw = prw;
if (ph != 0) {
psh = ph * PS_UNIT_SIZE;
if (res_unit == RESUNIT_CENTIMETER)
psh *= 2.54F;
}
else
psh = prh;
/* auto rotate for best fit */
if (rotate && rotation == 0) {
maxsource = (prw >= prh) ? prw : prh;
maxtarget = (psw >= psh) ? psw : psh;
if (((maxsource == prw) && (maxtarget != psw)) ||
((maxsource == prh) && (maxtarget != psh))) {
rotation = 90;
}
}
/* scaling depends on rotation and new page size */
switch (rotation) {
case 0:
case 180:
xscale = (psw - left_offset)/prw;
yscale = (psh - bottom_offset)/prh;
if (!npages)
PSHead(fd, tif, w, h, psw, psh, ox, oy);
break;
case 90:
case 270:
xscale = (psw - bottom_offset) /prh;
yscale = (psh - left_offset) /prw;
if (!npages)
PSHead(fd, tif, w, h, psh, psw, oy, ox);
break;
}
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++;
fprintf(fd, "%%%%Page: %d %d\n", npages, npages);
if (!generateEPSF && ( level2 || level3 )) {
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");
/* N.B. Setting maxPageHeight also sets ph if not set explicitly */
if (pw != 0 || ph != 0) {
if (maxPageHeight || maxPageWidth) { /* used -H or -W options */
split = PlaceImage(tif,fd,&npages,w,h,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++;
fprintf(fd, "%%%%Page: %d %d\n",
npages, npages);
fprintf(fd, "gsave\n");
fprintf(fd, "100 dict begin\n");
split = PlaceImage(tif,fd,&npages,w,h,pw,ph,prw,prh,
split,lm,bm,cnt);
}
}
else {
/* NB: maintain image aspect ratio */
scale = (xscale < yscale) ? xscale : yscale;
if (scale > 1.0)
scale = 1.0;
/* Adjust offsets for centering */
if (cnt) {
switch (rotation) {
case 90:
case 270:
hcenter = (psw - prh * scale) / 2;
vcenter = (psh - prw * scale) / 2;
break;
case 0:
case 180:
default:
hcenter = (psw - prw * scale) / 2;
vcenter = (psh - prh * scale) / 2;
break;
}
}
else
hcenter = 0.0, vcenter = 0.0;
if (cnt)
fprintf (fd, "%f %f translate\n", hcenter, vcenter);
switch (rotation) {
case 0:
fprintf (fd, "%f %f scale\n", prw * scale, prh * scale);
break;
case 90:
fprintf (fd, "%f %f scale\n1 0 translate 90 rotate\n", prh * scale, prw * scale);
break;
case 180:
fprintf (fd, "%f %f scale\n1 1 translate 180 rotate\n", prw * scale, prh * scale);
break;
case 270:
fprintf (fd, "%f %f scale\n0 1 translate 270 rotate\n", prh * scale, prw * scale);
break;
default:
fprintf (stderr, "Unsupported angle. No rotation\n");
fprintf (fd, "%f %f scale\n", prw * scale, prh * scale);
break;
}
}
} else {
if (rotate)
{
/* Width and height have already been enchanged for 90/270 rotations */
switch (rotation) {
case 0:
fprintf (fd, "%f %f scale\n", prw, prh);
case 90:
fprintf (fd, "%f %f scale\n1 0 translate 90 rotate\n", prw, prh);
break;
case 180:
fprintf (fd, "%f %f scale\n1 1 translate 180 rotate\n", prw, prh);
break;
case 270:
fprintf (fd, "%f %f scale\n0 1 translate 270 rotate\n", prw, prh);
break;
default:
fprintf (stderr, "Unsupported angle. No rotation\n");
fprintf( fd, "%f %f scale\n", prw, prh);
break;
}
}
else
{
/* fprintf (stderr, "No rotation\n"); */
fprintf (fd, "%f %f scale\n", prw, prh);
}
}
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));
return(npages);
}
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: tiff2ps\n");
fprintf(fd, "%%%%Title: %s\n", filename);
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 */
if (rotate && (rotation == 90 || rotation == 270))
fprintf(fd, "%%%%BoundingBox: 0 0 %ld %ld\n",
(long) ceil(ph), (long) ceil(pw));
else
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
PSTail(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);
}
/* 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 w, uint32 h)
{
uint16 fillorder;
int use_rawdata, tiled_image, breaklen = MAXLINE;
uint32 chunk_no, num_chunks;
uint64 *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 * 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 %lu bytes for %s.",
(unsigned long) 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 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 < 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, es = samplesperpixel - nc;
tsize_t cc;
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;
/*
* 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;
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;
tsize_t 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, 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 %d not supported", bitspersample);
return;
}
nc = 3 * (8 / bitspersample);
tf_buf = (unsigned char *) _TIFFmalloc(tf_bytesperrow);
if (tf_buf == NULL) {
TIFFError(filename, "No space for scanline buffer");
return;
}
if (checkcmap(tif, 1<<bitspersample, rmap, gmap, bmap) == 16) {
int i;
#define CVT(x) ((unsigned short) (((x) * 255) / ((1U<<16)-1)))
for (i = (1<<bitspersample)-1; i >= 0; i--) {
rmap[i] = CVT(rmap[i]);
gmap[i] = CVT(gmap[i]);
bmap[i] = CVT(bmap[i]);
}
#undef CVT
}
for (row = 0; row < h; row++) {
if (TIFFReadScanline(tif, tf_buf, row, 0) < 0)
break;
for (cp = tf_buf, cc = 0; cc < tf_bytesperrow; cc++) {
DOBREAK(breaklen, nc, fd);
switch (bitspersample) {
case 8:
c = *cp++; PUTRGBHEX(c, fd);
break;
case 4:
c = *cp++; PUTRGBHEX(c&0xf, fd);
c >>= 4; PUTRGBHEX(c, fd);
break;
case 2:
c = *cp++; PUTRGBHEX(c&0x3, fd);
c >>= 2; PUTRGBHEX(c&0x3, fd);
c >>= 2; PUTRGBHEX(c&0x3, fd);
c >>= 2; PUTRGBHEX(c, fd);
break;
case 1:
c = *cp++; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c&0x1, fd);
c >>= 1; PUTRGBHEX(c, fd);
break;
}
}
}
_TIFFfree((char *) tf_buf);
}
void
PSDataBW(FILE* fd, TIFF* tif, uint32 w, uint32 h)
{
int breaklen = MAXLINE;
unsigned char* tf_buf;
unsigned char* cp;
tsize_t stripsize = TIFFStripSize(tif);
tstrip_t s;
#if defined( EXP_ASCII85ENCODER )
tsize_t 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++) {
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; 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);
}
void
PSRawDataBW(FILE* fd, TIFF* tif, uint32 w, uint32 h)
{
uint64 *bc;
uint32 bufsize;
int breaklen = MAXLINE;
tmsize_t cc;
uint16 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 * 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) bc[0];
for ( s = 0; ++s < (tstrip_t)tf_numberstrips; ) {
if ( bc[s] > bufsize )
bufsize = (uint32) bc[s];
}
tf_buf = (unsigned char*) _TIFFmalloc(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 = _TIFFmalloc( (bufsize+(bufsize/2)) + 8 );
if ( !ascii85_p ) {
_TIFFfree( tf_buf );
TIFFError( filename, "Cannot allocate ASCII85 encoding buffer." );
return;
}
}
#endif
for (s = 0; s < (tstrip_t) 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 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.
*
*****************************************************************************/
tsize_t Ascii85EncodeBlock( uint8 * ascii85_p, unsigned f_eod, const uint8 * 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 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 )
{
tsize_t 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 */
char* stuff[] = {
"usage: tiff2ps [options] input.tif ...",
"where options are:",
" -1 generate PostScript Level 1 (default)",
" -2 generate PostScript Level 2",
" -3 generate PostScript Level 3",
" -8 disable use of ASCII85 encoding with PostScript Level 2/3",
" -a convert all directories in file (default is first)",
" -b # set the bottom margin to # inches",
" -c center image (-b and -l still add to this)",
" -d # convert directory number #",
" -D enable duplex printing (two pages per sheet of paper)",
" -e generate Encapsulated PostScript (EPS) (implies -z)",
" -h # assume printed page height is # inches (default 11)",
" -w # assume printed page width is # inches (default 8.5)",
" -H # split image if height is more than # inches",
" -W # split image if width is more than # inches",
" -L # overLap split images by # inches",
" -i # enable/disable (Nz/0) pixel interpolation (default: enable)",
" -l # set the left margin to # inches",
" -m use \"imagemask\" operator instead of \"image\"",
" -o # convert directory at file offset #",
" -O file write PostScript to file instead of standard output",
" -p generate regular PostScript",
" -r # or auto rotate by 90, 180, 270 degrees or auto",
" -s generate PostScript for a single image",
" -T print pages for top edge binding",
" -x override resolution units as centimeters",
" -y override resolution units as inches",
" -z enable printing in the deadzone (only for PostScript Level 2/3)",
NULL
};
static void
usage(int code)
{
char buf[BUFSIZ];
int i;
setbuf(stderr, buf);
fprintf(stderr, "%s\n\n", TIFFGetVersion());
for (i = 0; stuff[i] != NULL; i++)
fprintf(stderr, "%s\n", stuff[i]);
exit(code);
}
/* vim: set ts=8 sts=8 sw=8 noet: */
/*
* Local Variables:
* mode: c
* c-basic-offset: 8
* fill-column: 78
* End:
*/
Reference in New Issue View Git Blame Copy Permalink