t2p.c

Tue, 21 Jan 2003 18:30:49 +0000

author
eric
date
Tue, 21 Jan 2003 18:30:49 +0000
changeset 49
be20d7e8466f
parent 48
3d0be1c1c1b2
child 50
efbc5e0957df
permissions
-rw-r--r--

added command-line mode

     1 /*
     2  * t2p: Create a PDF file from the contents of one or more TIFF
     3  *      bilevel image files.  The images in the resulting PDF file
     4  *      will be compressed using ITU-T T.6 (G4) fax encoding.
     5  *
     6  * Main program
     7  * $Id: t2p.c,v 1.20 2003/01/21 10:30:49 eric Exp $
     8  * Copyright 2001, 2002, 2003 Eric Smith <eric@brouhaha.com>
     9  *
    10  * This program is free software; you can redistribute it and/or modify
    11  * it under the terms of the GNU General Public License version 2 as
    12  * published by the Free Software Foundation.  Note that permission is
    13  * not granted to redistribute this program under the terms of any
    14  * other version of the General Public License.
    15  *
    16  * This program is distributed in the hope that it will be useful,
    17  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    18  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    19  * GNU General Public License for more details.
    20  *
    21  * You should have received a copy of the GNU General Public License
    22  * along with this program; if not, write to the Free Software
    23  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111 USA */
    26 #include <stdarg.h>
    27 #include <stdbool.h>
    28 #include <stdint.h>
    29 #include <stdio.h>
    30 #include <stdlib.h>
    31 #include <unistd.h>
    33 #include <tiffio.h>
    34 #define TIFF_REVERSE_BITS
    36 #include <panda/functions.h>
    37 #include <panda/constants.h>
    39 #include "bitblt.h"
    40 #include "semantics.h"
    41 #include "parser.tab.h"
    42 #include "t2p.h"
    45 #define MAX_INPUT_FILES 5000
    47 #define POINTS_PER_INCH 72
    49 /* page size limited by Acrobat Reader to 45 inches on a side */
    50 #define PAGE_MAX_INCHES 45
    51 #define PAGE_MAX_POINTS (PAGE_MAX_INCHES * POINTS_PER_INCH)
    54 typedef struct output_file_t
    55 {
    56   struct output_file_t *next;
    57   char *name;
    58   panda_pdf *pdf;
    59 } output_file_t;
    62 int verbose;
    65 char *in_filename;
    66 TIFF *in;
    67 output_file_t *output_files;
    68 output_file_t *out;
    69 /* panda_pdf *out; */
    72 char *progname;
    75 bool close_tiff_input_file (void);
    76 bool close_pdf_output_files (void);
    79 void usage (void)
    80 {
    81   fprintf (stderr, "usage:\n");
    82   fprintf (stderr, "    %s [options] -s spec\n", progname);
    83   fprintf (stderr, "    %s [options] <input.tif>... -o <output.pdf>\n", progname);
    84   fprintf (stderr, "options:\n");
    85   fprintf (stderr, "    -v   verbose\n");
    86 }
    89 /* generate fatal error message to stderr, doesn't return */
    90 void fatal (int ret, char *format, ...)
    91 {
    92   va_list ap;
    94   fprintf (stderr, "fatal error");
    95   if (format)
    96     {
    97       fprintf (stderr, ": ");
    98       va_start (ap, format);
    99       vfprintf (stderr, format, ap);
   100       va_end (ap);
   101     }
   102   else
   103     fprintf (stderr, "\n");
   104   if (ret == 1)
   105     usage ();
   106   close_tiff_input_file ();
   107   close_pdf_output_files ();
   108   exit (ret);
   109 }
   112 bool close_tiff_input_file (void)
   113 {
   114   if (in)
   115     {
   116       free (in_filename);
   117       TIFFClose (in);
   118     }
   119   in = NULL;
   120   in_filename = NULL;
   121   return (1);
   122 }
   125 bool open_tiff_input_file (char *name)
   126 {
   127   if (in)
   128     {
   129       if (strcmp (name, in_filename) == 0)
   130 	return (1);
   131       close_tiff_input_file ();
   132     }
   133   in_filename = strdup (name);
   134   if (! in_filename)
   135     {
   136       fprintf (stderr, "can't strdup input filename '%s'\n", name);
   137       return (0);
   138     }
   139   in = TIFFOpen (name, "r");
   140   if (! in)
   141     {
   142       fprintf (stderr, "can't open input file '%s'\n", name);
   143       free (in_filename);
   144       return (0);
   145     }
   146   return (1);
   147 }
   150 bool close_pdf_output_files (void)
   151 {
   152   output_file_t *o, *n;
   154   for (o = output_files; o; o = n)
   155     {
   156       n = o->next;
   157       panda_close (o->pdf);
   158       free (o->name);
   159       free (o);
   160     }
   161   out = NULL;
   162   output_files = NULL;
   163   return (1);
   164 }
   166 bool open_pdf_output_file (char *name,
   167 			   pdf_file_attributes_t *attributes)
   168 {
   169   output_file_t *o;
   171   if (out && (strcmp (name, out->name) == 0))
   172     return (1);
   173   for (o = output_files; o; o = o->next)
   174     if (strcmp (name, o->name) == 0)
   175       {
   176 	out = o;
   177 	return (1);
   178       }
   179   o = calloc (1, sizeof (output_file_t));
   180   if (! o)
   181     {
   182       fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
   183       return (0);
   184    }
   186   o->name = strdup (name);
   187   if (! o->name)
   188     {
   189       fprintf (stderr, "can't strdup output filename '%s'\n", name);
   190       free (o);
   191       return (0);
   192     }
   194   o->pdf = panda_open (name, "w");
   195   if (! o->pdf)
   196     {
   197       fprintf (stderr, "can't open output file '%s'\n", name);
   198       free (o->name);
   199       free (o);
   200       return (0);
   201     }
   203   if (attributes->author)
   204     panda_setauthor (o->pdf, attributes->author);
   205   if (attributes->creator)
   206     panda_setcreator (o->pdf, attributes->creator);
   207   if (attributes->title)
   208     panda_settitle (o->pdf, attributes->title);
   209   if (attributes->subject)
   210     panda_setsubject (o->pdf, attributes->subject);
   211   if (attributes->keywords)
   212     panda_setkeywords (o->pdf, attributes->keywords);
   214   /* prepend new output file onto list */
   215   o->next = output_files;
   216   output_files = o;
   218   out = o;
   219   return (1);
   220 }
   223 void process_page_numbers (int page_index,
   224 			   int count,
   225 			   int base,
   226 			   page_label_t *page_label)
   227 {
   228 }
   231 /* frees original! */
   232 static Bitmap *resize_bitmap (Bitmap *src,
   233 			      float x_resolution,
   234 			      float y_resolution,
   235 			      input_attributes_t input_attributes)
   236 {
   237   Rect src_rect;
   238   Point dest_min;
   239   Bitmap *dest;
   241   int width_pixels = input_attributes.page_size.width * x_resolution;
   242   int height_pixels = input_attributes.page_size.height * y_resolution;
   244   src_rect.min.x = (rect_width (& src->rect) - width_pixels) / 2;
   245   src_rect.min.y = (rect_height (& src->rect) - height_pixels) / 2;
   246   src_rect.max.x = src_rect.min.x + width_pixels;
   247   src_rect.max.y = src_rect.min.y + height_pixels;
   249   dest_min.x = 0;
   250   dest_min.y = 0;
   252   dest = bitblt (src, & src_rect, NULL, & dest_min, TF_SRC, 0);
   253   free_bitmap (src);
   254   return (dest);
   255 }
   258 /* "in place" rotation */
   259 static void rotate_bitmap (Bitmap *src,
   260 			   input_attributes_t input_attributes)
   261 {
   262   switch (input_attributes.rotation)
   263     {
   264     case 0: break;
   265     case 90: rot_90 (src); break;
   266     case 180: rot_180 (src); break;
   267     case 270: rot_270 (src); break;
   268     default:
   269       fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
   270     }
   271 }
   274 #define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
   277 bool last_tiff_page (void)
   278 {
   279   return (TIFFLastDirectory (in));
   280 }
   283 bool process_page (int image,  /* range 1 .. n */
   284 		   input_attributes_t input_attributes,
   285 		   bookmark_t *bookmarks)
   286 {
   287   int result = 0;
   289   uint32_t image_length, image_width;
   290   uint32_t dest_image_length, dest_image_width;
   291 #ifdef CHECK_DEPTH
   292   uint32_t image_depth;
   293 #endif
   295   uint16_t samples_per_pixel;
   296   uint16_t bits_per_sample;
   297   uint16_t planar_config;
   299   uint16_t resolution_unit;
   300   float x_resolution, y_resolution;
   301   float dest_x_resolution, dest_y_resolution;
   303   int width_points, height_points;  /* really 1/72 inch units rather than
   304 				       points */
   306   Rect rect;
   307   Bitmap *bitmap;
   309   int row;
   311   panda_page *page;
   313   int tiff_temp_fd;
   314   char tiff_temp_fn [] = "/var/tmp/t2p-XXXXXX\0";
   315   TIFF *tiff_temp;
   317   char pagesize [26];  /* Needs to hold two ints of four characters (0..3420),
   318 			  two zeros, three spaces, two brackets, and a NULL.
   319                           Added an extra ten characters just in case. */
   321   if (! TIFFSetDirectory (in, image - 1))
   322     {
   323       fprintf (stderr, "can't find page %d of input file\n", image);
   324       goto fail;
   325     }
   326   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   327     {
   328       fprintf (stderr, "can't get image length\n");
   329       goto fail;
   330     }
   331   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   332     {
   333       fprintf (stderr, "can't get image width\n");
   334       goto fail;
   335     }
   337   if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
   338     {
   339       fprintf (stderr, "can't get samples per pixel\n");
   340       goto fail;
   341     }
   343 #ifdef CHECK_DEPTH
   344   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   345     {
   346       fprintf (stderr, "can't get image depth\n");
   347       goto fail;
   348     }
   349 #endif
   351   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   352     {
   353       fprintf (stderr, "can't get bits per sample\n");
   354       goto fail;
   355     }
   357   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   358     planar_config = 1;
   360   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   361     resolution_unit = 2;
   362   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   363     x_resolution = 300;
   364   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   365     y_resolution = 300;
   367   if (samples_per_pixel != 1)
   368     {
   369       fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
   370       goto fail;
   371     }
   373 #ifdef CHECK_DEPTH
   374   if (image_depth != 1)
   375     {
   376       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   377       goto fail;
   378     }
   379 #endif
   381   if (bits_per_sample != 1)
   382     {
   383       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   384       goto fail;
   385     }
   387   if (planar_config != 1)
   388     {
   389       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   390       goto fail;
   391     }
   393   if (input_attributes.has_resolution)
   394     {
   395       x_resolution = input_attributes.x_resolution;
   396       y_resolution = input_attributes.y_resolution;
   397     }
   399   if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
   400     {
   401       dest_image_width  = image_length;
   402       dest_image_length = image_width;
   403       dest_x_resolution = y_resolution;
   404       dest_y_resolution = x_resolution;
   405       SWAP (int, width_points, height_points);
   406     }
   407   else
   408     {
   409       dest_image_width = image_width;
   410       dest_image_length = image_length;
   411       dest_x_resolution = x_resolution;
   412       dest_y_resolution = y_resolution;
   413     }
   415   rect.min.x = 0;
   416   rect.min.y = 0;
   417   rect.max.x = image_width;
   418   rect.max.y = image_length;
   420   bitmap = create_bitmap (& rect);
   422   if (! bitmap)
   423     {
   424       fprintf (stderr, "can't allocate bitmap\n");
   425       goto fail;
   426     }
   428   for (row = 0; row < image_length; row++)
   429     if (1 != TIFFReadScanline (in,
   430 			       bitmap->bits + row * bitmap->row_words,
   431 			       row,
   432 			       0))
   433       {
   434 	fprintf (stderr, "can't read TIFF scanline\n");
   435 	goto fail;
   436       }
   438 #ifdef TIFF_REVERSE_BITS
   439   reverse_bits ((uint8_t *) bitmap->bits,
   440 		image_length * bitmap->row_words * sizeof (word_type));
   441 #endif /* TIFF_REVERSE_BITS */
   443   if (input_attributes.has_page_size)
   444     bitmap = resize_bitmap (bitmap,
   445 			    x_resolution,
   446 			    y_resolution,
   447 			    input_attributes);
   449   rotate_bitmap (bitmap,
   450 		 input_attributes);
   452   tiff_temp_fd = mkstemp (tiff_temp_fn);
   453   if (tiff_temp_fd < 0)
   454     {
   455       fprintf (stderr, "can't create temporary TIFF file\n");
   456       goto fail;
   457     }
   459   tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
   460   if (! out)
   461     {
   462       fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
   463       goto fail;
   464     }
   466   TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, rect_height (& bitmap->rect));
   467   TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, rect_width (& bitmap->rect));
   468   TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
   470   TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, rect_height (& bitmap->rect));
   472   TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
   473   TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
   474   TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
   476   TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
   477   TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
   478   TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
   479   TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
   481 #ifdef TIFF_REVERSE_BITS
   482   reverse_bits ((uint8_t *) bitmap->bits,
   483 		image_length * bitmap->row_words * sizeof (word_type));
   484 #endif /* TIFF_REVERSE_BITS */
   486   for (row = 0; row < rect_height (& bitmap->rect); row++)
   487     if (1 != TIFFWriteScanline (tiff_temp,
   488 				bitmap->bits + row * bitmap->row_words,
   489 				row,
   490 				0))
   491       {
   492 	fprintf (stderr, "can't write TIFF scanline\n");
   493 	goto fail;
   494       }
   496   TIFFClose (tiff_temp);
   498   width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
   499   height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
   501   free_bitmap (bitmap);
   503   if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
   504     {
   505       fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
   506       goto fail;
   507     }
   509   sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
   511   page = panda_newpage (out->pdf, pagesize);
   512   panda_imagebox (out->pdf,
   513 		  page,
   514 		  0, /* top */
   515 		  0, /* left */
   516 		  height_points, /* bottom */
   517 		  width_points, /* right */
   518 		  tiff_temp_fn,
   519 		  panda_image_tiff);
   521   result = 1;
   523  fail:
   524   if (tiff_temp_fd)
   525     unlink (tiff_temp_fn);
   526   return (result);
   527 }
   530 void main_args (char *out_fn, int inf_count, char **in_fn)
   531 {
   532   int i, ip;
   533   input_attributes_t input_attributes;
   534   pdf_file_attributes_t output_attributes;
   536   memset (& input_attributes, 0, sizeof (input_attributes));
   537   memset (& output_attributes, 0, sizeof (output_attributes));
   539   if (! open_pdf_output_file (out_fn, & output_attributes))
   540     fatal (3, "error opening output file \"%s\"\n", out_fn);
   541   for (i = 0; i < inf_count; i++)
   542     {
   543       if (! open_tiff_input_file (in_fn [i]))
   544 	fatal (3, "error opening input file \"%s\"\n", in_fn [i]);
   545       for (ip = 1;; ip++)
   546 	{
   547 	  if (! process_page (ip, input_attributes, NULL))
   548 	    fatal (3, "error processing page %d of input file \"%s\"\n", ip, in_fn [i]);
   549 	  if (last_tiff_page ())
   550 	    break;
   551 	}
   552       if (verbose)
   553 	fprintf (stderr, "processed %d pages of input file \"%s\"\n", ip, in_fn [i]);
   554       if (! close_tiff_input_file ())
   555 	fatal (3, "error closing input file \"%s\"\n", in_fn [i]);
   556     }
   557   if (! close_pdf_output_files ())
   558     fatal (3, "error closing output file \"%s\"\n", out_fn);
   559 }
   562 void main_spec (char *spec_fn)
   563 {
   564   if (! parse_spec_file (spec_fn))
   565     fatal (2, "error parsing spec file\n");
   566   if (! process_specs ())
   567     fatal (3, "error processing spec file\n");
   568 }
   571 int main (int argc, char *argv[])
   572 {
   573   char *spec_fn = NULL;
   574   char *out_fn = NULL;
   575   int inf_count = 0;
   576   char *in_fn [MAX_INPUT_FILES];
   578   progname = argv [0];
   580   panda_init ();
   582   while (--argc)
   583     {
   584       if (argv [1][0] == '-')
   585 	{
   586 	  if (strcmp (argv [1], "-v") == 0)
   587 	    verbose++;
   588 	  else if (strcmp (argv [1], "-o") == 0)
   589 	    {
   590 	      if (argc)
   591 		{
   592 		  argc--;
   593 		  argv++;
   594 		  out_fn = argv [1];
   595 		}
   596 	      else
   597 		fatal (1, "missing filename after \"-o\" option\n");
   598 	    }
   599 	  else if (strcmp (argv [1], "-s") == 0)
   600 	    {
   601 	      if (argc)
   602 		{
   603 		  argc--;
   604 		  argv++;
   605 		  spec_fn = argv [1];
   606 		}
   607 	      else
   608 		fatal (1, "missing filename after \"-s\" option\n");
   609 	    }
   610 	  else
   611 	    fatal (1, "unrecognized option \"%s\"\n", argv [1]);
   612 	}
   613       else if (inf_count < MAX_INPUT_FILES)
   614 	in_fn [inf_count++] = argv [1];
   615       else
   616 	fatal (1, "exceeded maximum of %d input files\n", MAX_INPUT_FILES);
   617       argv++;
   618     }
   620   if (! ((! out_fn) ^ (! spec_fn)))
   621     fatal (1, "either a spec file or an output file (but not both) must be specified\n");
   623   if (out_fn && ! inf_count)
   624     fatal (1, "no input files specified\n");
   626   if (spec_fn && inf_count)
   627     fatal (1, "if spec file is provided, input files can't be specified as arguments\n");
   629   if (spec_fn)
   630     main_spec (spec_fn);
   631   else
   632     main_args (out_fn, inf_count, in_fn);
   634   close_tiff_input_file ();
   635   close_pdf_output_files ();
   636   exit (0);
   637 }