tumble.c

Wed, 30 Jan 2002 08:55:53 +0000

author
eric
date
Wed, 30 Jan 2002 08:55:53 +0000
changeset 44
0f78374addae
parent 43
b80cb5a4282a
child 46
20fda1ec5f17
permissions
-rw-r--r--

changed program name to "t2p"

     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: tumble.c,v 1.16 2002/01/30 00:55:34 eric Exp $
     8  * Copyright 2001 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 <stdio.h>
    27 #include <stdlib.h>
    28 #include <unistd.h>
    29 #include <tiffio.h>
    30 #include <panda/functions.h>
    31 #include <panda/constants.h>
    33 #include "type.h"
    34 #include "bitblt.h"
    35 #include "semantics.h"
    36 #include "parser.tab.h"
    37 #include "t2p.h"
    40 #define POINTS_PER_INCH 72
    42 /* page size limited by Acrobat Reader to 45 inches on a side */
    43 #define PAGE_MAX_INCHES 45
    44 #define PAGE_MAX_POINTS (PAGE_MAX_INCHES * POINTS_PER_INCH)
    47 typedef struct output_file_t
    48 {
    49   struct output_file_t *next;
    50   char *name;
    51   panda_pdf *pdf;
    52 } output_file_t;
    55 char *in_filename;
    56 TIFF *in;
    57 output_file_t *output_files;
    58 output_file_t *out;
    59 /* panda_pdf *out; */
    62 boolean close_tiff_input_file (void)
    63 {
    64   if (in)
    65     {
    66       free (in_filename);
    67       TIFFClose (in);
    68     }
    69   in = NULL;
    70   in_filename = NULL;
    71   return (1);
    72 }
    74 boolean open_tiff_input_file (char *name)
    75 {
    76   if (in)
    77     {
    78       if (strcmp (name, in_filename) == 0)
    79 	return (1);
    80       close_tiff_input_file ();
    81     }
    82   in_filename = strdup (name);
    83   if (! in_filename)
    84     {
    85       fprintf (stderr, "can't strdup input filename '%s'\n", name);
    86       return (0);
    87     }
    88   in = TIFFOpen (name, "r");
    89   if (! in)
    90     {
    91       fprintf (stderr, "can't open input file '%s'\n", name);
    92       free (in_filename);
    93       return (0);
    94     }
    95   return (1);
    96 }
    99 boolean close_pdf_output_files (void)
   100 {
   101   output_file_t *o, *n;
   103   for (o = output_files; o; o = n)
   104     {
   105       n = o->next;
   106       panda_close (o->pdf);
   107       free (o->name);
   108       free (o);
   109     }
   110   out = NULL;
   111   output_files = NULL;
   112   return (1);
   113 }
   115 boolean open_pdf_output_file (char *name,
   116 			      pdf_file_attributes_t *attributes)
   117 {
   118   output_file_t *o;
   120   if (out && (strcmp (name, out->name) == 0))
   121     return (1);
   122   for (o = output_files; o; o = o->next)
   123     if (strcmp (name, o->name) == 0)
   124       {
   125 	out = o;
   126 	return (1);
   127       }
   128   o = calloc (1, sizeof (output_file_t));
   129   if (! o)
   130     {
   131       fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
   132       return (0);
   133    }
   135   o->name = strdup (name);
   136   if (! o->name)
   137     {
   138       fprintf (stderr, "can't strdup output filename '%s'\n", name);
   139       free (o);
   140       return (0);
   141     }
   143   o->pdf = panda_open (name, "w");
   144   if (! o->pdf)
   145     {
   146       fprintf (stderr, "can't open output file '%s'\n", name);
   147       free (o->name);
   148       free (o);
   149       return (0);
   150     }
   152   if (attributes->author)
   153     panda_setauthor (o->pdf, attributes->author);
   154   if (attributes->creator)
   155     panda_setcreator (o->pdf, attributes->creator);
   156   if (attributes->title)
   157     panda_settitle (o->pdf, attributes->title);
   158   if (attributes->subject)
   159     panda_setsubject (o->pdf, attributes->subject);
   160   if (attributes->keywords)
   161     panda_setkeywords (o->pdf, attributes->keywords);
   163   /* prepend new output file onto list */
   164   o->next = output_files;
   165   output_files = o;
   167   out = o;
   168   return (1);
   169 }
   172 void process_page_numbers (int page_index,
   173 			   int count,
   174 			   int base,
   175 			   page_label_t *page_label)
   176 {
   177 }
   180 /* frees original! */
   181 static Bitmap *resize_bitmap (Bitmap *src,
   182 			      float x_resolution,
   183 			      float y_resolution,
   184 			      input_attributes_t input_attributes)
   185 {
   186   Rect src_rect;
   187   Point dest_min;
   188   Bitmap *dest;
   190   int width_pixels = input_attributes.page_size.width * x_resolution;
   191   int height_pixels = input_attributes.page_size.height * y_resolution;
   193   src_rect.min.x = (rect_width (& src->rect) - width_pixels) / 2;
   194   src_rect.min.y = (rect_height (& src->rect) - height_pixels) / 2;
   195   src_rect.max.x = src_rect.min.x + width_pixels;
   196   src_rect.max.y = src_rect.min.y + height_pixels;
   198   dest_min.x = 0;
   199   dest_min.y = 0;
   201   dest = bitblt (src, & src_rect, NULL, & dest_min, TF_SRC, 0);
   202   free_bitmap (src);
   203   return (dest);
   204 }
   207 /* "in place" rotation */
   208 static void rotate_bitmap (Bitmap *src,
   209 			   input_attributes_t input_attributes)
   210 {
   211   switch (input_attributes.rotation)
   212     {
   213     case 0: break;
   214     case 90: rot_90 (src); break;
   215     case 180: rot_180 (src); break;
   216     case 270: rot_270 (src); break;
   217     default:
   218       fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
   219     }
   220 }
   223 #define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
   225 boolean process_page (int image,  /* range 1 .. n */
   226 		      input_attributes_t input_attributes,
   227 		      bookmark_t *bookmarks)
   228 {
   229   int result = 0;
   231   u32 image_length, image_width;
   232   u32 dest_image_length, dest_image_width;
   233 #ifdef CHECK_DEPTH
   234   u32 image_depth;
   235 #endif
   237   u16 samples_per_pixel;
   238   u16 bits_per_sample;
   239   u16 planar_config;
   241   u16 resolution_unit;
   242   float x_resolution, y_resolution;
   243   float dest_x_resolution, dest_y_resolution;
   245   int width_points, height_points;  /* really 1/72 inch units rather than
   246 				       points */
   248   Rect rect;
   249   Bitmap *bitmap;
   251   int row;
   253   panda_page *page;
   255   int tiff_temp_fd;
   256   char tiff_temp_fn [] = "/var/tmp/t2p-XXXXXX\0";
   257   TIFF *tiff_temp;
   259   char pagesize [26];  /* Needs to hold two ints of four characters (0..3420),
   260 			  two zeros, three spaces, two brackets, and a NULL.
   261                           Added an extra ten characters just in case. */
   263   if (! TIFFSetDirectory (in, image - 1))
   264     {
   265       fprintf (stderr, "can't find page %d of input file\n", image);
   266       goto fail;
   267     }
   268   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   269     {
   270       fprintf (stderr, "can't get image length\n");
   271       goto fail;
   272     }
   273   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   274     {
   275       fprintf (stderr, "can't get image width\n");
   276       goto fail;
   277     }
   279   if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
   280     {
   281       fprintf (stderr, "can't get samples per pixel\n");
   282       goto fail;
   283     }
   285 #ifdef CHECK_DEPTH
   286   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   287     {
   288       fprintf (stderr, "can't get image depth\n");
   289       goto fail;
   290     }
   291 #endif
   293   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   294     {
   295       fprintf (stderr, "can't get bits per sample\n");
   296       goto fail;
   297     }
   299   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   300     planar_config = 1;
   302   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   303     resolution_unit = 2;
   304   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   305     x_resolution = 300;
   306   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   307     y_resolution = 300;
   309   if (samples_per_pixel != 1)
   310     {
   311       fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
   312       goto fail;
   313     }
   315 #ifdef CHECK_DEPTH
   316   if (image_depth != 1)
   317     {
   318       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   319       goto fail;
   320     }
   321 #endif
   323   if (bits_per_sample != 1)
   324     {
   325       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   326       goto fail;
   327     }
   329   if (planar_config != 1)
   330     {
   331       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   332       goto fail;
   333     }
   335   if (input_attributes.has_resolution)
   336     {
   337       x_resolution = input_attributes.x_resolution;
   338       y_resolution = input_attributes.y_resolution;
   339     }
   341   if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
   342     {
   343       dest_image_width  = image_length;
   344       dest_image_length = image_width;
   345       dest_x_resolution = y_resolution;
   346       dest_y_resolution = x_resolution;
   347       SWAP (int, width_points, height_points);
   348     }
   349   else
   350     {
   351       dest_image_width = image_width;
   352       dest_image_length = image_length;
   353       dest_x_resolution = x_resolution;
   354       dest_y_resolution = y_resolution;
   355     }
   357   rect.min.x = 0;
   358   rect.min.y = 0;
   359   rect.max.x = image_width;
   360   rect.max.y = image_length;
   362   bitmap = create_bitmap (& rect);
   364   if (! bitmap)
   365     {
   366       fprintf (stderr, "can't allocate bitmap\n");
   367       goto fail;
   368     }
   370   for (row = 0; row < image_length; row++)
   371     if (1 != TIFFReadScanline (in,
   372 			       bitmap->bits + row * bitmap->row_words,
   373 			       row,
   374 			       0))
   375       {
   376 	fprintf (stderr, "can't read TIFF scanline\n");
   377 	goto fail;
   378       }
   380   bitmap = resize_bitmap (bitmap,
   381 			      x_resolution,
   382 			      y_resolution,
   383 			      input_attributes);
   385   rotate_bitmap (bitmap,
   386 		 input_attributes);
   388   tiff_temp_fd = mkstemp (tiff_temp_fn);
   389   if (tiff_temp_fd < 0)
   390     {
   391       fprintf (stderr, "can't create temporary TIFF file\n");
   392       goto fail;
   393     }
   395   tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
   396   if (! out)
   397     {
   398       fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
   399       goto fail;
   400     }
   402   TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, rect_height (& bitmap->rect));
   403   TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, rect_width (& bitmap->rect));
   404   TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
   406   TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, rect_height (& bitmap->rect));
   408   TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
   409   TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
   410   TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
   412   TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
   413   TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
   414   TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
   415   TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
   417   for (row = 0; row < rect_height (& bitmap->rect); row++)
   418     if (1 != TIFFWriteScanline (tiff_temp,
   419 				bitmap->bits + row * bitmap->row_words,
   420 				row,
   421 				0))
   422       {
   423 	fprintf (stderr, "can't write TIFF scanline\n");
   424 	goto fail;
   425       }
   427   TIFFClose (tiff_temp);
   429   width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
   430   height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
   432   free_bitmap (bitmap);
   434   if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
   435     {
   436       fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
   437       goto fail;
   438     }
   440   sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
   442   page = panda_newpage (out->pdf, pagesize);
   443   panda_imagebox (out->pdf,
   444 		  page,
   445 		  0, /* top */
   446 		  0, /* left */
   447 		  height_points, /* bottom */
   448 		  width_points, /* right */
   449 		  tiff_temp_fn,
   450 		  panda_image_tiff);
   452   result = 1;
   454  fail:
   455   if (tiff_temp_fd)
   456     unlink (tiff_temp_fn);
   457   return (result);
   458 }
   461 int main (int argc, char *argv[])
   462 {
   463   int result = 0;
   465   panda_init ();
   467   if (argc != 2)
   468     {
   469       fprintf (stderr, "usage: %s spec\n", argv [0]);
   470       result = 1;
   471       goto fail;
   472     }
   474   if (! parse_spec_file (argv [1]))
   475     {
   476       result = 2;
   477       goto fail;
   478     }
   480   if (! process_specs ())
   481     {
   482       result = 3;
   483       goto fail;
   484     }
   486  fail:
   487   close_tiff_input_file ();
   488   close_pdf_output_files ();
   489   return (result);
   490 }