t2p.c

Fri, 21 Feb 2003 09:25:47 +0000

author
eric
date
Fri, 21 Feb 2003 09:25:47 +0000
changeset 66
6e0551b59dba
parent 64
151394412eba
child 74
12bc5088172e
permissions
-rw-r--r--

implemented ImageMask fill color arguments to pdf_write_g4_fax_image().

     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 1.24 2003/02/21 01:25:47 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
    24  */
    27 #include <stdarg.h>
    28 #include <stdbool.h>
    29 #include <stdint.h>
    30 #include <stdio.h>
    31 #include <stdlib.h>
    32 #include <string.h>
    33 #include <unistd.h>
    35 #include <tiffio.h>
    36 #define TIFF_REVERSE_BITS
    38 #include "bitblt.h"
    39 #include "semantics.h"
    40 #include "parser.tab.h"
    41 #include "t2p.h"
    42 #include "pdf.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   pdf_file_handle 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;
    71 char *progname;
    74 bool close_tiff_input_file (void);
    75 bool close_pdf_output_files (void);
    78 void usage (void)
    79 {
    80   fprintf (stderr, "\n");
    81   fprintf (stderr, "t2p - Copyright 2001-2003 Eric Smith <eric@brouhaha.com>\n");
    82   fprintf (stderr, "http://www.brouhaha.com/~eric/software/t2p/\n");
    83   fprintf (stderr, "\n");
    84   fprintf (stderr, "usage:\n");
    85   fprintf (stderr, "    %s [options] -s spec\n", progname);
    86   fprintf (stderr, "    %s [options] <input.tif>... -o <output.pdf>\n", progname);
    87   fprintf (stderr, "options:\n");
    88   fprintf (stderr, "    -v   verbose\n");
    89   fprintf (stderr, "    -b fmt  create bookmarks\n");
    90   fprintf (stderr, "bookmark format:\n");
    91   fprintf (stderr, "    %%F  file name\n");
    92   fprintf (stderr, "    %%p  page number\n");
    93 }
    96 /* generate fatal error message to stderr, doesn't return */
    97 void fatal (int ret, char *format, ...)
    98 {
    99   va_list ap;
   101   fprintf (stderr, "fatal error");
   102   if (format)
   103     {
   104       fprintf (stderr, ": ");
   105       va_start (ap, format);
   106       vfprintf (stderr, format, ap);
   107       va_end (ap);
   108     }
   109   else
   110     fprintf (stderr, "\n");
   111   if (ret == 1)
   112     usage ();
   113   close_tiff_input_file ();
   114   close_pdf_output_files ();
   115   exit (ret);
   116 }
   119 bool close_tiff_input_file (void)
   120 {
   121   if (in)
   122     {
   123       free (in_filename);
   124       TIFFClose (in);
   125     }
   126   in = NULL;
   127   in_filename = NULL;
   128   return (1);
   129 }
   132 bool open_tiff_input_file (char *name)
   133 {
   134   if (in)
   135     {
   136       if (strcmp (name, in_filename) == 0)
   137 	return (1);
   138       close_tiff_input_file ();
   139     }
   140   in_filename = strdup (name);
   141   if (! in_filename)
   142     {
   143       fprintf (stderr, "can't strdup input filename '%s'\n", name);
   144       return (0);
   145     }
   146   in = TIFFOpen (name, "r");
   147   if (! in)
   148     {
   149       fprintf (stderr, "can't open input file '%s'\n", name);
   150       free (in_filename);
   151       return (0);
   152     }
   153   return (1);
   154 }
   157 bool close_pdf_output_files (void)
   158 {
   159   output_file_t *o, *n;
   161   for (o = output_files; o; o = n)
   162     {
   163       n = o->next;
   164       pdf_close (o->pdf);
   165       free (o->name);
   166       free (o);
   167     }
   168   out = NULL;
   169   output_files = NULL;
   170   return (1);
   171 }
   173 bool open_pdf_output_file (char *name,
   174 			   pdf_file_attributes_t *attributes)
   175 {
   176   output_file_t *o;
   178   if (out && (strcmp (name, out->name) == 0))
   179     return (1);
   180   for (o = output_files; o; o = o->next)
   181     if (strcmp (name, o->name) == 0)
   182       {
   183 	out = o;
   184 	return (1);
   185       }
   186   o = calloc (1, sizeof (output_file_t));
   187   if (! o)
   188     {
   189       fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
   190       return (0);
   191    }
   193   o->name = strdup (name);
   194   if (! o->name)
   195     {
   196       fprintf (stderr, "can't strdup output filename '%s'\n", name);
   197       free (o);
   198       return (0);
   199     }
   201   o->pdf = pdf_create (name);
   202   if (! o->pdf)
   203     {
   204       fprintf (stderr, "can't open output file '%s'\n", name);
   205       free (o->name);
   206       free (o);
   207       return (0);
   208     }
   210   if (attributes->author)
   211     pdf_set_author (o->pdf, attributes->author);
   212   if (attributes->creator)
   213     pdf_set_creator (o->pdf, attributes->creator);
   214   if (attributes->title)
   215     pdf_set_title (o->pdf, attributes->title);
   216   if (attributes->subject)
   217     pdf_set_subject (o->pdf, attributes->subject);
   218   if (attributes->keywords)
   219     pdf_set_keywords (o->pdf, attributes->keywords);
   221   /* prepend new output file onto list */
   222   o->next = output_files;
   223   output_files = o;
   225   out = o;
   226   return (1);
   227 }
   230 void process_page_numbers (int page_index,
   231 			   int count,
   232 			   int base,
   233 			   page_label_t *page_label)
   234 {
   235 }
   238 /* frees original! */
   239 static Bitmap *resize_bitmap (Bitmap *src,
   240 			      float x_resolution,
   241 			      float y_resolution,
   242 			      input_attributes_t input_attributes)
   243 {
   244   Rect src_rect;
   245   Point dest_min;
   246   Bitmap *dest;
   248   int width_pixels = input_attributes.page_size.width * x_resolution;
   249   int height_pixels = input_attributes.page_size.height * y_resolution;
   251   src_rect.min.x = (rect_width (& src->rect) - width_pixels) / 2;
   252   src_rect.min.y = (rect_height (& src->rect) - height_pixels) / 2;
   253   src_rect.max.x = src_rect.min.x + width_pixels;
   254   src_rect.max.y = src_rect.min.y + height_pixels;
   256   dest_min.x = 0;
   257   dest_min.y = 0;
   259   dest = bitblt (src, & src_rect, NULL, & dest_min, TF_SRC, 0);
   260   free_bitmap (src);
   261   return (dest);
   262 }
   265 /* "in place" rotation */
   266 static void rotate_bitmap (Bitmap *src,
   267 			   input_attributes_t input_attributes)
   268 {
   269   switch (input_attributes.rotation)
   270     {
   271     case 0: break;
   272     case 90: rot_90 (src); break;
   273     case 180: rot_180 (src); break;
   274     case 270: rot_270 (src); break;
   275     default:
   276       fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
   277     }
   278 }
   281 #define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
   284 bool last_tiff_page (void)
   285 {
   286   return (TIFFLastDirectory (in));
   287 }
   290 bool process_page (int image,  /* range 1 .. n */
   291 		   input_attributes_t input_attributes,
   292 		   bookmark_t *bookmarks)
   293 {
   294   int result = 0;
   296   uint32_t image_length, image_width;
   297   uint32_t dest_image_length, dest_image_width;
   298 #ifdef CHECK_DEPTH
   299   uint32_t image_depth;
   300 #endif
   302   uint16_t samples_per_pixel;
   303   uint16_t bits_per_sample;
   304   uint16_t planar_config;
   306   uint16_t resolution_unit;
   307   float x_resolution, y_resolution;
   308   float dest_x_resolution, dest_y_resolution;
   310   double width_points, height_points;  /* really 1/72 inch units rather than
   311 					  points */
   313   Rect rect;
   314   Bitmap *bitmap;
   316   int row;
   318   pdf_page_handle page;
   320   if (! TIFFSetDirectory (in, image - 1))
   321     {
   322       fprintf (stderr, "can't find page %d of input file\n", image);
   323       goto fail;
   324     }
   325   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   326     {
   327       fprintf (stderr, "can't get image length\n");
   328       goto fail;
   329     }
   330   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   331     {
   332       fprintf (stderr, "can't get image width\n");
   333       goto fail;
   334     }
   336   if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
   337     {
   338       fprintf (stderr, "can't get samples per pixel\n");
   339       goto fail;
   340     }
   342 #ifdef CHECK_DEPTH
   343   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   344     {
   345       fprintf (stderr, "can't get image depth\n");
   346       goto fail;
   347     }
   348 #endif
   350   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   351     {
   352       fprintf (stderr, "can't get bits per sample\n");
   353       goto fail;
   354     }
   356   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   357     planar_config = 1;
   359   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   360     resolution_unit = 2;
   361   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   362     x_resolution = 300;
   363   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   364     y_resolution = 300;
   366   if (samples_per_pixel != 1)
   367     {
   368       fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
   369       goto fail;
   370     }
   372 #ifdef CHECK_DEPTH
   373   if (image_depth != 1)
   374     {
   375       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   376       goto fail;
   377     }
   378 #endif
   380   if (bits_per_sample != 1)
   381     {
   382       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   383       goto fail;
   384     }
   386   if (planar_config != 1)
   387     {
   388       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   389       goto fail;
   390     }
   392   if (input_attributes.has_resolution)
   393     {
   394       x_resolution = input_attributes.x_resolution;
   395       y_resolution = input_attributes.y_resolution;
   396     }
   398   if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
   399     {
   400       dest_image_width  = image_length;
   401       dest_image_length = image_width;
   402       dest_x_resolution = y_resolution;
   403       dest_y_resolution = x_resolution;
   404       SWAP (double, width_points, height_points);  /* $$$ not yet set!!! */
   405     }
   406   else
   407     {
   408       dest_image_width = image_width;
   409       dest_image_length = image_length;
   410       dest_x_resolution = x_resolution;
   411       dest_y_resolution = y_resolution;
   412     }
   414   rect.min.x = 0;
   415   rect.min.y = 0;
   416   rect.max.x = image_width;
   417   rect.max.y = image_length;
   419   bitmap = create_bitmap (& rect);
   421   if (! bitmap)
   422     {
   423       fprintf (stderr, "can't allocate bitmap\n");
   424       goto fail;
   425     }
   427   for (row = 0; row < image_length; row++)
   428     if (1 != TIFFReadScanline (in,
   429 			       bitmap->bits + row * bitmap->row_words,
   430 			       row,
   431 			       0))
   432       {
   433 	fprintf (stderr, "can't read TIFF scanline\n");
   434 	goto fail;
   435       }
   437 #ifdef TIFF_REVERSE_BITS
   438   reverse_bits ((uint8_t *) bitmap->bits,
   439 		image_length * bitmap->row_words * sizeof (word_type));
   440 #endif /* TIFF_REVERSE_BITS */
   442   if (input_attributes.has_page_size)
   443     bitmap = resize_bitmap (bitmap,
   444 			    x_resolution,
   445 			    y_resolution,
   446 			    input_attributes);
   448   rotate_bitmap (bitmap,
   449 		 input_attributes);
   451 #ifdef TIFF_REVERSE_BITS
   452   reverse_bits ((uint8_t *) bitmap->bits,
   453 		image_length * bitmap->row_words * sizeof (word_type));
   454 #endif /* TIFF_REVERSE_BITS */
   456   width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
   457   height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
   459   if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
   460     {
   461       fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
   462       goto fail;
   463     }
   465   page = pdf_new_page (out->pdf, width_points, height_points);
   467   pdf_write_g4_fax_image (page,
   468 			  0, 0,  /* x, y */
   469 			  width_points, height_points,
   470 			  bitmap,
   471 			  0, /* ImageMask */
   472 			  0, 0, 0,  /* r, g, b */
   473 			  0); /* BlackIs1 */
   475   free_bitmap (bitmap);
   477   result = 1;
   479  fail:
   480   return (result);
   481 }
   484 void main_args (char *out_fn, int inf_count, char **in_fn)
   485 {
   486   int i, ip;
   487   input_attributes_t input_attributes;
   488   pdf_file_attributes_t output_attributes;
   490   memset (& input_attributes, 0, sizeof (input_attributes));
   491   memset (& output_attributes, 0, sizeof (output_attributes));
   493   if (! open_pdf_output_file (out_fn, & output_attributes))
   494     fatal (3, "error opening output file \"%s\"\n", out_fn);
   495   for (i = 0; i < inf_count; i++)
   496     {
   497       if (! open_tiff_input_file (in_fn [i]))
   498 	fatal (3, "error opening input file \"%s\"\n", in_fn [i]);
   499       for (ip = 1;; ip++)
   500 	{
   501 	  fprintf (stderr, "processing page %d of file \"%s\"\r", ip, in_fn [i]);
   502 	  if (! process_page (ip, input_attributes, NULL))
   503 	    fatal (3, "error processing page %d of input file \"%s\"\n", ip, in_fn [i]);
   504 	  if (last_tiff_page ())
   505 	    break;
   506 	}
   507       if (verbose)
   508 	fprintf (stderr, "processed %d pages of input file \"%s\"\n", ip, in_fn [i]);
   509       if (! close_tiff_input_file ())
   510 	fatal (3, "error closing input file \"%s\"\n", in_fn [i]);
   511     }
   512   if (! close_pdf_output_files ())
   513     fatal (3, "error closing output file \"%s\"\n", out_fn);
   514 }
   517 void main_spec (char *spec_fn)
   518 {
   519   if (! parse_spec_file (spec_fn))
   520     fatal (2, "error parsing spec file\n");
   521   if (! process_specs ())
   522     fatal (3, "error processing spec file\n");
   523 }
   526 int main (int argc, char *argv[])
   527 {
   528   char *spec_fn = NULL;
   529   char *out_fn = NULL;
   530   char *bookmark_fmt = NULL;
   531   int inf_count = 0;
   532   char *in_fn [MAX_INPUT_FILES];
   534   progname = argv [0];
   536   pdf_init ();
   538   while (--argc)
   539     {
   540       if (argv [1][0] == '-')
   541 	{
   542 	  if (strcmp (argv [1], "-v") == 0)
   543 	    verbose++;
   544 	  else if (strcmp (argv [1], "-o") == 0)
   545 	    {
   546 	      if (argc)
   547 		{
   548 		  argc--;
   549 		  argv++;
   550 		  out_fn = argv [1];
   551 		}
   552 	      else
   553 		fatal (1, "missing filename after \"-o\" option\n");
   554 	    }
   555 	  else if (strcmp (argv [1], "-s") == 0)
   556 	    {
   557 	      if (argc)
   558 		{
   559 		  argc--;
   560 		  argv++;
   561 		  spec_fn = argv [1];
   562 		}
   563 	      else
   564 		fatal (1, "missing filename after \"-s\" option\n");
   565 	    }
   566 	  else if (strcmp (argv [1], "-b") == 0)
   567 	    {
   568 	      if (argc)
   569 		{
   570 		  argc--;
   571 		  argv++;
   572 		  bookmark_fmt = argv [1];
   573 		}
   574 	      else
   575 		fatal (1, "missing format string after \"-b\" option\n");
   576 	    }
   577 	  else
   578 	    fatal (1, "unrecognized option \"%s\"\n", argv [1]);
   579 	}
   580       else if (inf_count < MAX_INPUT_FILES)
   581 	in_fn [inf_count++] = argv [1];
   582       else
   583 	fatal (1, "exceeded maximum of %d input files\n", MAX_INPUT_FILES);
   584       argv++;
   585     }
   587   if (! ((! out_fn) ^ (! spec_fn)))
   588     fatal (1, "either a spec file or an output file (but not both) must be specified\n");
   590   if (out_fn && ! inf_count)
   591     fatal (1, "no input files specified\n");
   593   if (spec_fn && inf_count)
   594     fatal (1, "if spec file is provided, input files can't be specified as arguments\n");
   596   if (spec_fn)
   597     main_spec (spec_fn);
   598   else
   599     main_args (out_fn, inf_count, in_fn);
   601   close_tiff_input_file ();
   602   close_pdf_output_files ();
   603   exit (0);
   604 }