435 lines
13 KiB
C
435 lines
13 KiB
C
/* $Id: fax2ps.c,v 1.16 2004-09-02 14:37:29 dron Exp $" */
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/*
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* Copyright (c) 1991-1997 Sam Leffler
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* Copyright (c) 1991-1997 Silicon Graphics, Inc.
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*
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* Permission to use, copy, modify, distribute, and sell this software and
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* its documentation for any purpose is hereby granted without fee, provided
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* that (i) the above copyright notices and this permission notice appear in
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* all copies of the software and related documentation, and (ii) the names of
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* Sam Leffler and Silicon Graphics may not be used in any advertising or
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* publicity relating to the software without the specific, prior written
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* permission of Sam Leffler and Silicon Graphics.
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*
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* THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
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* EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
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* WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
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*
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* IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
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* ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
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* OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
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* WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
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* LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
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* OF THIS SOFTWARE.
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*/
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#include "tif_config.h"
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#include <stdlib.h>
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#include <stdio.h>
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#include <string.h>
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#include <math.h>
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#include <time.h>
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#ifdef HAVE_UNISTD_H
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# include <unistd.h>
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#endif
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#ifdef HAVE_IO_H
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# include <io.h>
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#endif
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#include "tiffio.h"
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float defxres = 204.; /* default x resolution (pixels/inch) */
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float defyres = 98.; /* default y resolution (lines/inch) */
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const float half = 0.5;
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const float points = 72.0;
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float pageWidth = 0; /* image page width (inches) */
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float pageHeight = 0; /* image page length (inches) */
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int scaleToPage = 0; /* if true, scale raster to page dimensions */
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int totalPages = 0; /* total # pages printed */
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int row; /* current output row */
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int maxline = 512; /* max output line of PostScript */
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/*
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* Turn a bit-mapped scanline into the appropriate sequence
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* of PostScript characters to be rendered.
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*
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* Original version written by Bret D. Whissel,
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* Florida State University Meteorology Department
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* March 13-15, 1995.
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*/
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static void
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printruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 lastx)
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{
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static struct {
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char white, black;
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unsigned short width;
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} WBarr[] = {
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{ 'd', 'n', 512 }, { 'e', 'o', 256 }, { 'f', 'p', 128 },
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{ 'g', 'q', 64 }, { 'h', 'r', 32 }, { 'i', 's', 16 },
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{ 'j', 't', 8 }, { 'k', 'u', 4 }, { 'l', 'v', 2 },
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{ 'm', 'w', 1 }
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};
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static char* svalue =
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" !\"#$&'*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abc";
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int colormode = 1; /* 0 for white, 1 for black */
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uint32 runlength = 0;
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int n = maxline;
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uint32 x = 0;
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int l;
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(void) buf;
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printf("%d m(", row++);
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while (runs < erun) {
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if (runlength <= 0) {
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colormode ^= 1;
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runlength = *runs++;
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if (x+runlength > lastx)
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runlength = runs[-1] = lastx-x;
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x += runlength;
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if (!colormode && runs == erun)
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break; /* don't bother printing the final white run */
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}
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/*
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* If a runlength is greater than 6 pixels, then spit out
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* black or white characters until the runlength drops to
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* 6 or less. Once a runlength is <= 6, then combine black
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* and white runlengths until a 6-pixel pattern is obtained.
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* Then write out the special character. Six-pixel patterns
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* were selected since 64 patterns is the largest power of
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* two less than the 92 "easily printable" PostScript
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* characters (i.e., no escape codes or octal chars).
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*/
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l = 0;
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while (runlength > 6) { /* Run is greater than six... */
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if (runlength >= WBarr[l].width) {
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if (n == 0) {
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putchar('\n');
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n = maxline;
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}
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putchar(colormode ? WBarr[l].black : WBarr[l].white), n--;
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runlength -= WBarr[l].width;
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} else
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l++;
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}
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while (runlength > 0 && runlength <= 6) {
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uint32 bitsleft = 6;
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int t = 0;
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while (bitsleft) {
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if (runlength <= bitsleft) {
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if (colormode)
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t |= ((1 << runlength)-1) << (bitsleft-runlength);
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bitsleft -= runlength;
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runlength = 0;
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if (bitsleft) {
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if (runs >= erun)
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break;
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colormode ^= 1;
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runlength = *runs++;
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if (x+runlength > lastx)
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runlength = runs[-1] = lastx-x;
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x += runlength;
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}
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} else { /* runlength exceeds bits left */
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if (colormode)
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t |= ((1 << bitsleft)-1);
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runlength -= bitsleft;
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bitsleft = 0;
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}
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}
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if (n == 0) {
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putchar('\n');
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n = maxline;
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}
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putchar(svalue[t]), n--;
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}
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}
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printf(")s\n");
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}
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/*
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* Create a special PostScript font for printing FAX documents. By taking
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* advantage of the font-cacheing mechanism, a substantial speed-up in
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* rendering time is realized.
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*/
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static void
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emitFont(FILE* fd)
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{
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static const char* fontPrologue[] = {
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"/newfont 10 dict def newfont begin /FontType 3 def /FontMatrix [1",
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"0 0 1 0 0] def /FontBBox [0 0 512 1] def /Encoding 256 array def",
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"0 1 31{Encoding exch /255 put}for 120 1 255{Encoding exch /255",
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"put}for Encoding 37 /255 put Encoding 40 /255 put Encoding 41 /255",
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"put Encoding 92 /255 put /count 0 def /ls{Encoding exch count 3",
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"string cvs cvn put /count count 1 add def}def 32 1 36{ls}for",
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"38 1 39{ls}for 42 1 91{ls}for 93 1 99{ls}for /count 100",
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"def 100 1 119{ls}for /CharDict 5 dict def CharDict begin /white",
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"{dup 255 eq{pop}{1 dict begin 100 sub neg 512 exch bitshift",
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"/cw exch def cw 0 0 0 cw 1 setcachedevice end}ifelse}def /black",
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"{dup 255 eq{pop}{1 dict begin 110 sub neg 512 exch bitshift",
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"/cw exch def cw 0 0 0 cw 1 setcachedevice 0 0 moveto cw 0 rlineto",
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"0 1 rlineto cw neg 0 rlineto closepath fill end}ifelse}def /numbuild",
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"{dup 255 eq{pop}{6 0 0 0 6 1 setcachedevice 0 1 5{0 moveto",
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"dup 32 and 32 eq{1 0 rlineto 0 1 rlineto -1 0 rlineto closepath",
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"fill newpath}if 1 bitshift}for pop}ifelse}def /.notdef {}",
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"def /255 {}def end /BuildChar{exch begin dup 110 ge{Encoding",
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"exch get 3 string cvs cvi CharDict /black get}{dup 100 ge {Encoding",
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"exch get 3 string cvs cvi CharDict /white get}{Encoding exch get",
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"3 string cvs cvi CharDict /numbuild get}ifelse}ifelse exec end",
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"}def end /Bitfont newfont definefont 1 scalefont setfont",
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NULL
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};
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int i;
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for (i = 0; fontPrologue[i] != NULL; i++)
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fprintf(fd, "%s\n", fontPrologue[i]);
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}
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void
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printTIF(TIFF* tif, int pageNumber)
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{
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uint32 w, h;
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uint16 unit;
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float xres, yres, scale = 1.0;
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tstrip_t s, ns;
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time_t creation_time;
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TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &h);
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TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &w);
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if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres) || !xres) {
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TIFFWarning(TIFFFileName(tif),
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"No x-resolution, assuming %g dpi", defxres);
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xres = defxres;
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}
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if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres) || !yres) {
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TIFFWarning(TIFFFileName(tif),
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"No y-resolution, assuming %g lpi", defyres);
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yres = defyres; /* XXX */
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}
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if (TIFFGetField(tif, TIFFTAG_RESOLUTIONUNIT, &unit) &&
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unit == RESUNIT_CENTIMETER) {
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xres *= 2.54F;
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yres *= 2.54F;
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}
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if (pageWidth == 0)
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pageWidth = w / xres;
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if (pageHeight == 0)
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pageHeight = h / yres;
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printf("%%!PS-Adobe-3.0\n");
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printf("%%%%Creator: fax2ps\n");
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#ifdef notdef
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printf("%%%%Title: %s\n", file);
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#endif
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creation_time = time(0);
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printf("%%%%CreationDate: %s", ctime(&creation_time));
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printf("%%%%Origin: 0 0\n");
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printf("%%%%BoundingBox: 0 0 %u %u\n",
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(int)(pageWidth * points), (int)(pageHeight * points)); /* XXX */
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printf("%%%%Pages: (atend)\n");
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printf("%%%%EndComments\n");
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printf("%%%%BeginProlog\n");
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emitFont(stdout);
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printf("/d{bind def}def\n"); /* bind and def proc */
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printf("/m{0 exch moveto}d\n");
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printf("/s{show}d\n");
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printf("/p{showpage}d \n"); /* end page */
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printf("%%%%EndProlog\n");
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printf("%%%%Page: \"%d\" %d\n", pageNumber, pageNumber);
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printf("/$pageTop save def gsave\n");
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if (scaleToPage)
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scale = pageHeight / (h/yres) < pageWidth / (w/xres) ?
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pageHeight / (h/yres) : pageWidth / (w/xres);
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printf("%g %g translate\n",
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points * (pageWidth - scale*w/xres) * half,
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points * (scale*h/yres + (pageHeight - scale*h/yres) * half));
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printf("%g %g scale\n", points/xres*scale, -points/yres*scale);
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printf("0 setgray\n");
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TIFFSetField(tif, TIFFTAG_FAXFILLFUNC, printruns);
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ns = TIFFNumberOfStrips(tif);
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row = 0;
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for (s = 0; s < ns; s++)
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(void) TIFFReadEncodedStrip(tif, s, (tdata_t) NULL, (tsize_t) -1);
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printf("p\n");
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printf("grestore $pageTop restore\n");
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totalPages++;
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}
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#define GetPageNumber(tif) \
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TIFFGetField(tif, TIFFTAG_PAGENUMBER, &pn, &ptotal)
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int
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findPage(TIFF* tif, int pageNumber)
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{
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uint16 pn = (uint16) -1;
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uint16 ptotal = (uint16) -1;
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if (GetPageNumber(tif)) {
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while (pn != pageNumber && TIFFReadDirectory(tif) && GetPageNumber(tif))
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;
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return (pn == pageNumber);
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} else
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return (TIFFSetDirectory(tif, (tdir_t)(pageNumber-1)));
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}
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void
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fax2ps(TIFF* tif, int npages, int* pages, char* filename)
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{
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if (npages > 0) {
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uint16 pn, ptotal;
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int i;
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if (!GetPageNumber(tif))
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fprintf(stderr, "%s: No page numbers, counting directories.\n",
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filename);
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for (i = 0; i < npages; i++) {
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if (findPage(tif, pages[i]))
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printTIF(tif, pages[i]);
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else
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fprintf(stderr, "%s: No page number %d\n", filename, pages[i]);
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}
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} else {
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int pageNumber = 1;
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do
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printTIF(tif, pageNumber++);
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while (TIFFReadDirectory(tif));
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}
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}
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#undef GetPageNumber
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static int
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pcompar(const void* va, const void* vb)
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{
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const int* pa = (const int*) va;
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const int* pb = (const int*) vb;
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return (*pa - *pb);
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}
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static void usage(int code);
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int
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main(int argc, char** argv)
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{
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extern int optind;
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extern char* optarg;
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int c, pageNumber;
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int* pages = 0, npages = 0;
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int dowarnings = 0; /* if 1, enable library warnings */
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TIFF* tif;
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while ((c = getopt(argc, argv, "l:p:x:y:W:H:wS")) != -1)
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switch (c) {
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case 'H': /* page height */
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pageHeight = (float)atof(optarg);
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break;
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case 'S': /* scale to page */
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scaleToPage = 1;
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break;
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case 'W': /* page width */
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pageWidth = (float)atof(optarg);
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break;
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case 'p': /* print specific page */
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pageNumber = atoi(optarg);
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if (pageNumber < 1) {
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fprintf(stderr, "%s: Invalid page number (must be > 0).\n",
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optarg);
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usage(-1);
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}
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if (pages)
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pages = (int*) realloc((char*)pages, (npages+1)*sizeof(int));
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else
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pages = (int*) malloc(sizeof(int));
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pages[npages++] = pageNumber;
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break;
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case 'w':
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dowarnings = 1;
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break;
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case 'x':
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defxres = (float)atof(optarg);
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break;
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case 'y':
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defyres = (float)atof(optarg);
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break;
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case 'l':
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maxline = atoi(optarg);
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break;
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case '?':
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usage(-1);
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}
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if (npages > 0)
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qsort(pages, npages, sizeof (int), pcompar);
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if (!dowarnings)
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TIFFSetWarningHandler(0);
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if (optind < argc) {
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do {
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tif = TIFFOpen(argv[optind], "r");
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if (tif) {
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fax2ps(tif, npages, pages, argv[optind]);
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TIFFClose(tif);
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} else
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fprintf(stderr, "%s: Can not open, or not a TIFF file.\n",
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argv[optind]);
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} while (++optind < argc);
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} else {
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int n;
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FILE* fd;
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char temp[1024], buf[16*1024];
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strcpy(temp, "/tmp/fax2psXXXXXX");
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(void) mktemp(temp);
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fd = fopen(temp, "w");
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if (fd == NULL) {
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fprintf(stderr, "Could not create temp file \"%s\"\n", temp);
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exit(-2);
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}
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while ((n = read(fileno(stdin), buf, sizeof (buf))) > 0)
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write(fileno(fd), buf, n);
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tif = TIFFOpen(temp, "r");
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#ifndef VMS
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unlink(temp);
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#else
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remove(temp);
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#endif
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if (tif) {
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fax2ps(tif, npages, pages, "<stdin>");
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TIFFClose(tif);
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} else
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fprintf(stderr, "%s: Can not open, or not a TIFF file.\n", temp);
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fclose(fd);
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}
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printf("%%%%Trailer\n");
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printf("%%%%Pages: %u\n", totalPages);
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printf("%%%%EOF\n");
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return (0);
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}
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char* stuff[] = {
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"usage: fax2ps [options] [input.tif ...]",
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"where options are:",
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" -w suppress warning messages",
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" -l chars set maximum output line length for generated PostScript",
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" -p page# select page to print (can use multiple times)",
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" -x xres set default horizontal resolution of input data (dpi)",
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" -y yres set default vertical resolution of input data (lpi)",
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" -S scale output to page size",
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" -W width set output page width (inches), default is 8.5",
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" -H height set output page height (inchest), default is 11",
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NULL
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};
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static void
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usage(int code)
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{
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char buf[BUFSIZ];
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int i;
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setbuf(stderr, buf);
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fprintf(stderr, "%s\n\n", TIFFGetVersion());
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for (i = 0; stuff[i] != NULL; i++)
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fprintf(stderr, "%s\n", stuff[i]);
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exit(code);
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}
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/* vim: set ts=8 sts=8 sw=8 noet: */ |