src/tiff/tools/fax2ps.c

   1 /* $Id$" */
   2
   3 /*
   4  * Copyright (c) 1991-1997 Sam Leffler
   5  * Copyright (c) 1991-1997 Silicon Graphics, Inc.
   6  *
   7  * Permission to use, copy, modify, distribute, and sell this software and
   8  * its documentation for any purpose is hereby granted without fee, provided
   9  * that (i) the above copyright notices and this permission notice appear in
  10  * all copies of the software and related documentation, and (ii) the names of
  11  * Sam Leffler and Silicon Graphics may not be used in any advertising or
  12  * publicity relating to the software without the specific, prior written
  13  * permission of Sam Leffler and Silicon Graphics.
  14  *
  15  * THE SOFTWARE IS PROVIDED "AS-IS" AND WITHOUT WARRANTY OF ANY KIND,
  16  * EXPRESS, IMPLIED OR OTHERWISE, INCLUDING WITHOUT LIMITATION, ANY
  17  * WARRANTY OF MERCHANTABILITY OR FITNESS FOR A PARTICULAR PURPOSE.
  18  *
  19  * IN NO EVENT SHALL SAM LEFFLER OR SILICON GRAPHICS BE LIABLE FOR
  20  * ANY SPECIAL, INCIDENTAL, INDIRECT OR CONSEQUENTIAL DAMAGES OF ANY KIND,
  21  * OR ANY DAMAGES WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS,
  22  * WHETHER OR NOT ADVISED OF THE POSSIBILITY OF DAMAGE, AND ON ANY THEORY OF
  23  * LIABILITY, ARISING OUT OF OR IN CONNECTION WITH THE USE OR PERFORMANCE
  24  * OF THIS SOFTWARE.
  25  */
  26 #include "tif_config.h"
  27
  28 #include <stdlib.h>
  29 #include <stdio.h>
  30 #include <string.h>
  31 #include <math.h>
  32 #include <time.h>
  33
  34 #ifdef HAVE_UNISTD_H
  35 # include <unistd.h>
  36 #endif
  37
  38 #ifdef HAVE_IO_H
  39 # include <io.h>
  40 #endif
  41
  42 #include "tiffio.h"
  43
  44 float   defxres = 204.;         /* default x resolution (pixels/inch) */
  45 float   defyres = 98.;          /* default y resolution (lines/inch) */
  46 const float half = 0.5;
  47 const float points = 72.0;
  48 float   pageWidth = 0;          /* image page width (inches) */
  49 float   pageHeight = 0;         /* image page length (inches) */
  50 int     scaleToPage = 0;        /* if true, scale raster to page dimensions */
  51 int     totalPages = 0;         /* total # pages printed */
  52 int     row;                    /* current output row */
  53 int     maxline = 512;          /* max output line of PostScript */
  54
  55 /*
  56  * Turn a bit-mapped scanline into the appropriate sequence
  57  * of PostScript characters to be rendered.
  58  *
  59  * Original version written by Bret D. Whissel,
  60  * Florida State University Meteorology Department
  61  * March 13-15, 1995.
  62  */
  63 static void
  64 printruns(unsigned char* buf, uint32* runs, uint32* erun, uint32 lastx)
  65 {
  66     static struct {
  67         char white, black;
  68         unsigned short width;
  69     } WBarr[] = {
  70         { 'd', 'n', 512 }, { 'e', 'o', 256 }, { 'f', 'p', 128 },
  71         { 'g', 'q',  64 }, { 'h', 'r',  32 }, { 'i', 's',  16 },
  72         { 'j', 't',   8 }, { 'k', 'u',   4 }, { 'l', 'v',   2 },
  73         { 'm', 'w',   1 }
  74     };
  75     static char* svalue =
  76         " !\"#$&'*+,-./0123456789:;<=>?@ABCDEFGHIJKLMNOPQRSTUVWXYZ[]^_`abc";
  77     int colormode = 1;          /* 0 for white, 1 for black */
  78     uint32 runlength = 0;
  79     int n = maxline;
  80     uint32 x = 0;
  81     int l;
  82
  83     (void) buf;
  84     printf("%d m(", row++);
  85     while (runs < erun) {
  86         if (runlength <= 0) {
  87             colormode ^= 1;
  88             runlength = *runs++;
  89             if (x+runlength > lastx)
  90                 runlength = runs[-1] = lastx-x;
  91             x += runlength;
  92             if (!colormode && runs == erun)
  93                 break;          /* don't bother printing the final white run */
  94         }
  95         /*
  96          * If a runlength is greater than 6 pixels, then spit out
  97          * black or white characters until the runlength drops to
  98          * 6 or less.  Once a runlength is <= 6, then combine black
  99          * and white runlengths until a 6-pixel pattern is obtained.
 100          * Then write out the special character.  Six-pixel patterns
 101          * were selected since 64 patterns is the largest power of
 102          * two less than the 92 "easily printable" PostScript
 103          * characters (i.e., no escape codes or octal chars).
 104          */
 105         l = 0;
 106         while (runlength > 6) { /* Run is greater than six... */
 107             if (runlength >= WBarr[l].width) {
 108                 if (n == 0) {
 109                     putchar('\n');
 110                     n = maxline;
 111                 }
 112                 putchar(colormode ? WBarr[l].black : WBarr[l].white), n--;
 113                 runlength -= WBarr[l].width;
 114             } else
 115                 l++;
 116         }
 117         while (runlength > 0 && runlength <= 6) {
 118             uint32 bitsleft = 6;
 119             int t = 0;
 120             while (bitsleft) {
 121                 if (runlength <= bitsleft) {
 122                     if (colormode)
 123                         t |= ((1 << runlength)-1) << (bitsleft-runlength);
 124                     bitsleft -= runlength;
 125                     runlength = 0;
 126                     if (bitsleft) {
 127                         if (runs >= erun)
 128                             break;
 129                         colormode ^= 1;
 130                         runlength = *runs++;
 131                         if (x+runlength > lastx)
 132                             runlength = runs[-1] = lastx-x;
 133                         x += runlength;
 134                     }
 135                 } else {                /* runlength exceeds bits left */
 136                     if (colormode)
 137                         t |= ((1 << bitsleft)-1);
 138                     runlength -= bitsleft;
 139                     bitsleft = 0;
 140                 }
 141             }
 142             if (n == 0) {
 143                 putchar('\n');
 144                 n = maxline;
 145             }
 146             putchar(svalue[t]), n--;
 147         }
 148     }
 149     printf(")s\n");
 150 }
 151
 152 /*
 153  * Create a special PostScript font for printing FAX documents.  By taking
 154  * advantage of the font-cacheing mechanism, a substantial speed-up in
 155  * rendering time is realized.
 156  */
 157 static void
 158 emitFont(FILE* fd)
 159 {
 160     static const char* fontPrologue[] = {
 161         "/newfont 10 dict def newfont begin /FontType 3 def /FontMatrix [1",
 162         "0 0 1 0 0] def /FontBBox [0 0 512 1] def /Encoding 256 array def",
 163         "0 1 31{Encoding exch /255 put}for 120 1 255{Encoding exch /255",
 164         "put}for Encoding 37 /255 put Encoding 40 /255 put Encoding 41 /255",
 165         "put Encoding 92 /255 put /count 0 def /ls{Encoding exch count 3",
 166         "string cvs cvn put /count count 1 add def}def 32 1 36{ls}for",
 167         "38 1 39{ls}for 42 1 91{ls}for 93 1 99{ls}for /count 100",
 168         "def 100 1 119{ls}for /CharDict 5 dict def CharDict begin /white",
 169         "{dup 255 eq{pop}{1 dict begin 100 sub neg 512 exch bitshift",
 170         "/cw exch def cw 0 0 0 cw 1 setcachedevice end}ifelse}def /black",
 171         "{dup 255 eq{pop}{1 dict begin 110 sub neg 512 exch bitshift",
 172         "/cw exch def cw 0 0 0 cw 1 setcachedevice 0 0 moveto cw 0 rlineto",
 173         "0 1 rlineto cw neg 0 rlineto closepath fill end}ifelse}def /numbuild",
 174         "{dup 255 eq{pop}{6 0 0 0 6 1 setcachedevice 0 1 5{0 moveto",
 175         "dup 32 and 32 eq{1 0 rlineto 0 1 rlineto -1 0 rlineto closepath",
 176         "fill newpath}if 1 bitshift}for pop}ifelse}def /.notdef {}",
 177         "def /255 {}def end /BuildChar{exch begin dup 110 ge{Encoding",
 178         "exch get 3 string cvs cvi CharDict /black get}{dup 100 ge {Encoding",
 179         "exch get 3 string cvs cvi CharDict /white get}{Encoding exch get",
 180         "3 string cvs cvi CharDict /numbuild get}ifelse}ifelse exec end",
 181         "}def end /Bitfont newfont definefont 1 scalefont setfont",
 182         NULL
 183     };
 184     int i;
 185     for (i = 0; fontPrologue[i] != NULL; i++)
 186         fprintf(fd, "%s\n", fontPrologue[i]);
 187 }
 188
 189 void
 190 printTIF(TIFF* tif, uint16 pageNumber)
 191 {
 192     uint32 w, h;
 193     uint16 unit, compression;
 194     float xres, yres, scale = 1.0;
 195     tstrip_t s, ns;
 196     time_t creation_time;
 197
 198     TIFFGetField(tif, TIFFTAG_IMAGELENGTH, &h);
 199     TIFFGetField(tif, TIFFTAG_IMAGEWIDTH, &w);
 200     if (!TIFFGetField(tif, TIFFTAG_COMPRESSION, &compression)
 201         || compression < COMPRESSION_CCITTRLE
 202         || compression > COMPRESSION_CCITT_T6)
 203         return;
 204     if (!TIFFGetField(tif, TIFFTAG_XRESOLUTION, &xres) || !xres) {
 205         TIFFWarning(TIFFFileName(tif),
 206             "No x-resolution, assuming %g dpi", defxres);
 207         xres = defxres;
 208     }
 209     if (!TIFFGetField(tif, TIFFTAG_YRESOLUTION, &yres) || !yres) {
 210         TIFFWarning(TIFFFileName(tif),
 211             "No y-resolution, assuming %g lpi", defyres);
 212         yres = defyres;                                 /* XXX */
 213     }
 214     if (TIFFGetField(tif, TIFFTAG_RESOLUTIONUNIT, &unit) &&
 215       unit == RESUNIT_CENTIMETER) {
 216         xres *= 2.54F;
 217         yres *= 2.54F;
 218     }
 219     if (pageWidth == 0)
 220         pageWidth = w / xres;
 221     if (pageHeight == 0)
 222         pageHeight = h / yres;
 223
 224     printf("%%!PS-Adobe-3.0\n");
 225     printf("%%%%Creator: fax2ps\n");
 226 #ifdef notdef
 227     printf("%%%%Title: %s\n", file);
 228 #endif
 229     creation_time = time(0);
 230     printf("%%%%CreationDate: %s", ctime(&creation_time));
 231     printf("%%%%Origin: 0 0\n");
 232     printf("%%%%BoundingBox: 0 0 %u %u\n",
 233         (int)(pageWidth * points), (int)(pageHeight * points)); /* XXX */
 234     printf("%%%%Pages: (atend)\n");
 235     printf("%%%%EndComments\n");
 236     printf("%%%%BeginProlog\n");
 237     emitFont(stdout);
 238     printf("/d{bind def}def\n"); /* bind and def proc */
 239     printf("/m{0 exch moveto}d\n");
 240     printf("/s{show}d\n");
 241     printf("/p{showpage}d \n"); /* end page */
 242     printf("%%%%EndProlog\n");
 243     printf("%%%%Page: \"%u\" %u\n", pageNumber, pageNumber);
 244     printf("/$pageTop save def gsave\n");
 245     if (scaleToPage)
 246         scale = pageHeight / (h/yres) < pageWidth / (w/xres) ?
 247             pageHeight / (h/yres) : pageWidth / (w/xres);
 248     printf("%g %g translate\n",
 249            points * (pageWidth - scale*w/xres) * half,
 250            points * (scale*h/yres + (pageHeight - scale*h/yres) * half));
 251     printf("%g %g scale\n", points/xres*scale, -points/yres*scale);
 252     printf("0 setgray\n");
 253     TIFFSetField(tif, TIFFTAG_FAXFILLFUNC, printruns);
 254     ns = TIFFNumberOfStrips(tif);
 255     row = 0;
 256     for (s = 0; s < ns; s++)
 257         (void) TIFFReadEncodedStrip(tif, s, (tdata_t) NULL, (tsize_t) -1);
 258     printf("p\n");
 259     printf("grestore $pageTop restore\n");
 260     totalPages++;
 261 }
 262
 263 #define GetPageNumber(tif) \
 264 TIFFGetField(tif, TIFFTAG_PAGENUMBER, &pn, &ptotal)
 265
 266 int
 267 findPage(TIFF* tif, uint16 pageNumber)
 268 {
 269     uint16 pn = (uint16) -1;
 270     uint16 ptotal = (uint16) -1;
 271     if (GetPageNumber(tif)) {
 272         while (pn != pageNumber && TIFFReadDirectory(tif) && GetPageNumber(tif))
 273             ;
 274         return (pn == pageNumber);
 275     } else
 276         return (TIFFSetDirectory(tif, (tdir_t)(pageNumber-1)));
 277 }
 278
 279 void
 280 fax2ps(TIFF* tif, uint16 npages, uint16* pages, char* filename)
 281 {
 282     if (npages > 0) {
 283         uint16 pn, ptotal;
 284         int i;
 285
 286         if (!GetPageNumber(tif))
 287             fprintf(stderr, "%s: No page numbers, counting directories.\n",
 288                 filename);
 289         for (i = 0; i < npages; i++) {
 290             if (findPage(tif, pages[i]))
 291                 printTIF(tif, pages[i]);
 292             else
 293                 fprintf(stderr, "%s: No page number %d\n", filename, pages[i]);
 294         }
 295     } else {
 296         uint16 pageNumber = 0;
 297         do
 298             printTIF(tif, pageNumber++);
 299         while (TIFFReadDirectory(tif));
 300     }
 301 }
 302
 303 #undef GetPageNumber
 304
 305 static int
 306 pcompar(const void* va, const void* vb)
 307 {
 308     const int* pa = (const int*) va;
 309     const int* pb = (const int*) vb;
 310     return (*pa - *pb);
 311 }
 312
 313 static  void usage(int code);
 314
 315 int
 316 main(int argc, char** argv)
 317 {
 318     extern int optind;
 319     extern char* optarg;
 320     uint16 *pages = NULL, npages = 0, pageNumber;
 321     int c, dowarnings = 0;              /* if 1, enable library warnings */
 322     TIFF* tif;
 323
 324     while ((c = getopt(argc, argv, "l:p:x:y:W:H:wS")) != -1)
 325         switch (c) {
 326         case 'H':               /* page height */
 327             pageHeight = (float)atof(optarg);
 328             break;
 329         case 'S':               /* scale to page */
 330             scaleToPage = 1;
 331             break;
 332         case 'W':               /* page width */
 333             pageWidth = (float)atof(optarg);
 334             break;
 335         case 'p':               /* print specific page */
 336             pageNumber = (uint16)atoi(optarg);
 337             if (pages)
 338                 pages = (uint16*) realloc(pages, (npages+1)*sizeof(uint16));
 339             else
 340                 pages = (uint16*) malloc(sizeof(uint16));
 341             pages[npages++] = pageNumber;
 342             break;
 343         case 'w':
 344             dowarnings = 1;
 345             break;
 346         case 'x':
 347             defxres = (float)atof(optarg);
 348             break;
 349         case 'y':
 350             defyres = (float)atof(optarg);
 351             break;
 352         case 'l':
 353             maxline = atoi(optarg);
 354             break;
 355         case '?':
 356             usage(-1);
 357         }
 358     if (npages > 0)
 359         qsort(pages, npages, sizeof(uint16), pcompar);
 360     if (!dowarnings)
 361         TIFFSetWarningHandler(0);
 362     if (optind < argc) {
 363         do {
 364             tif = TIFFOpen(argv[optind], "r");
 365             if (tif) {
 366                 fax2ps(tif, npages, pages, argv[optind]);
 367                 TIFFClose(tif);
 368             } else
 369                 fprintf(stderr, "%s: Can not open, or not a TIFF file.\n",
 370                     argv[optind]);
 371         } while (++optind < argc);
 372     } else {
 373         int n;
 374         FILE* fd;
 375         char buf[16*1024];
 376
 377         fd = tmpfile();
 378         if (fd == NULL) {
 379             fprintf(stderr, "Could not create temporary file, exiting.\n");
 380             fclose(fd);
 381             exit(-2);
 382         }
 383         while ((n = read(fileno(stdin), buf, sizeof (buf))) > 0)
 384             write(fileno(fd), buf, n);
 385         lseek(fileno(fd), 0, SEEK_SET);
 386 #if defined(_WIN32) && defined(USE_WIN32_FILEIO)
 387         tif = TIFFFdOpen(_get_osfhandle(fileno(fd)), "temp", "r");
 388 #else
 389         tif = TIFFFdOpen(fileno(fd), "temp", "r");
 390 #endif
 391         if (tif) {
 392             fax2ps(tif, npages, pages, "<stdin>");
 393             TIFFClose(tif);
 394         } else
 395             fprintf(stderr, "Can not open, or not a TIFF file.\n");
 396         fclose(fd);
 397     }
 398     printf("%%%%Trailer\n");
 399     printf("%%%%Pages: %u\n", totalPages);
 400     printf("%%%%EOF\n");
 401
 402     return (0);
 403 }
 404
 405 char* stuff[] = {
 406 "usage: fax2ps [options] [input.tif ...]",
 407 "where options are:",
 408 " -w            suppress warning messages",
 409 " -l chars      set maximum output line length for generated PostScript",
 410 " -p page#      select page to print (can use multiple times)",
 411 " -x xres       set default horizontal resolution of input data (dpi)",
 412 " -y yres       set default vertical resolution of input data (lpi)",
 413 " -S            scale output to page size",
 414 " -W width      set output page width (inches), default is 8.5",
 415 " -H height     set output page height (inches), default is 11",
 416 NULL
 417 };
 418
 419 static void
 420 usage(int code)
 421 {
 422         char buf[BUFSIZ];
 423         int i;
 424
 425         setbuf(stderr, buf);
 426         fprintf(stderr, "%s\n\n", TIFFGetVersion());
 427         for (i = 0; stuff[i] != NULL; i++)
 428                 fprintf(stderr, "%s\n", stuff[i]);
 429         exit(code);
 430 }
 431
 432 /* vim: set ts=8 sts=8 sw=8 noet: */