t2p.c

Tue, 01 Jan 2002 05:41:03 +0000

author
eric
date
Tue, 01 Jan 2002 05:41:03 +0000
changeset 29
c904ffd6a1cf
parent 28
ba8313d18bd3
child 30
35fad7ec7732
permissions
-rw-r--r--

fix bugs. copy samples per pixel tag.

     1 /*
     2  * tiff2pdf: Create a PDF file from the contents of one or more
     3  *           TIFF bilevel image files.  The images in the resulting
     4  *           PDF file will be compressed using ITU-T T.6 (G4) fax
     5  *           encoding.
     6  *
     7  * Main program
     8  * $Id: t2p.c,v 1.10 2001/12/31 21:41:03 eric Exp $
     9  * Copyright 2001 Eric Smith <eric@brouhaha.com>
    10  *
    11  * This program is free software; you can redistribute it and/or modify
    12  * it under the terms of the GNU General Public License version 2 as
    13  * published by the Free Software Foundation.  Note that permission is
    14  * not granted to redistribute this program under the terms of any
    15  * other version of the General Public License.
    16  *
    17  * This program is distributed in the hope that it will be useful,
    18  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    19  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    20  * GNU General Public License for more details.
    21  *
    22  * You should have received a copy of the GNU General Public License
    23  * along with this program; if not, write to the Free Software
    24  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111  USA
    25  */
    28 #include <stdio.h>
    29 #include <stdlib.h>
    30 #include <unistd.h>
    31 #include <tiffio.h>
    32 #include <panda/functions.h>
    33 #include <panda/constants.h>
    35 #include "type.h"
    36 #include "bitblt.h"
    37 #include "semantics.h"
    38 #include "parser.tab.h"
    39 #include "tiff2pdf.h"
    42 #define POINTS_PER_INCH 72
    44 /* page size limited by Acrobat Reader to 45 inches on a side */
    45 #define PAGE_MAX_INCHES 45
    46 #define PAGE_MAX_POINTS (PAGE_MAX_INCHES * POINTS_PER_INCH)
    49 typedef struct output_file_t
    50 {
    51   struct output_file_t *next;
    52   char *name;
    53   panda_pdf *pdf;
    54 } output_file_t;
    57 char *in_filename;
    58 TIFF *in;
    59 output_file_t *output_files;
    60 output_file_t *out;
    61 /* panda_pdf *out; */
    64 boolean close_tiff_input_file (void)
    65 {
    66   if (in)
    67     {
    68       free (in_filename);
    69       TIFFClose (in);
    70     }
    71   in = NULL;
    72   in_filename = NULL;
    73   return (1);
    74 }
    76 boolean open_tiff_input_file (char *name)
    77 {
    78   if (in)
    79     {
    80       if (strcmp (name, in_filename) == 0)
    81 	return (1);
    82       close_tiff_input_file ();
    83     }
    84   in_filename = strdup (name);
    85   if (! in_filename)
    86     {
    87       fprintf (stderr, "can't strdup input filename '%s'\n", name);
    88       return (0);
    89     }
    90   in = TIFFOpen (name, "r");
    91   if (! in)
    92     {
    93       fprintf (stderr, "can't open input file '%s'\n", name);
    94       free (in_filename);
    95       return (0);
    96     }
    97   return (1);
    98 }
   101 boolean close_pdf_output_files (void)
   102 {
   103   output_file_t *o, *n;
   105   for (o = output_files; o; o = n)
   106     {
   107       n = o->next;
   108       panda_close (o->pdf);
   109       free (o->name);
   110       free (o);
   111     }
   112   out = NULL;
   113   output_files = NULL;
   114   return (1);
   115 }
   117 boolean open_pdf_output_file (char *name)
   118 {
   119   output_file_t *o;
   121   if (out && (strcmp (name, out->name) == 0))
   122     return (1);
   123   for (o = output_files; o; o = o->next)
   124     if (strcmp (name, o->name) == 0)
   125       {
   126 	out = o;
   127 	return (1);
   128       }
   129   o = calloc (1, sizeof (output_file_t));
   130   if (! o)
   131     {
   132       fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
   133       return (0);
   134    }
   136   o->name = strdup (name);
   137   if (! o->name)
   138     {
   139       fprintf (stderr, "can't strdup output filename '%s'\n", name);
   140       free (o);
   141       return (0);
   142     }
   144   o->pdf = panda_open (name, "w");
   145   if (! o->pdf)
   146     {
   147       fprintf (stderr, "can't open output file '%s'\n", name);
   148       free (o->name);
   149       free (o);
   150       return (0);
   151     }
   153   /* prepend new output file onto list */
   154   o->next = output_files;
   155   output_files = o;
   157   out = o;
   158   return (1);
   159 }
   162 void process_page_numbers (int page_index,
   163 			   int count,
   164 			   int base,
   165 			   page_label_t *page_label)
   166 {
   167 }
   170 boolean process_page (int image,  /* range 1 .. n */
   171 		      input_attributes_t input_attributes,
   172 		      bookmark_t *bookmarks)
   173 {
   174   int result = 0;
   176   u32 image_length, image_width;
   177 #ifdef CHECK_DEPTH
   178   u32 image_depth;
   179 #endif
   181   u16 samples_per_pixel;
   182   u16 bits_per_sample;
   183   u16 planar_config;
   184   u16 resolution_unit;
   185   float x_resolution, y_resolution;
   186   int width_points, height_points;  /* really 1/72 inch units rather than
   187 				       points */
   190   char *buffer;
   191   u32 row;
   193   panda_page *page;
   195   int tiff_temp_fd;
   196   char tiff_temp_fn [] = "/var/tmp/tiff2pdf-XXXXXX\0";
   197   TIFF *tiff_temp;
   199   char pagesize [26];  /* Needs to hold two ints of four characters (0..3420),
   200 			  two zeros, three spaces, two brackets, and a NULL.
   201                           Added an extra ten characters just in case. */
   203   if (! TIFFSetDirectory (in, image - 1))
   204     {
   205       fprintf (stderr, "can't find page %d of input file\n", image);
   206       goto fail;
   207     }
   208   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   209     {
   210       fprintf (stderr, "can't get image length\n");
   211       goto fail;
   212     }
   213   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   214     {
   215       fprintf (stderr, "can't get image width\n");
   216       goto fail;
   217     }
   219   if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
   220     {
   221       fprintf (stderr, "can't get samples per pixel\n");
   222       goto fail;
   223     }
   225 #ifdef CHECK_DEPTH
   226   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   227     {
   228       fprintf (stderr, "can't get image depth\n");
   229       goto fail;
   230     }
   231 #endif
   233   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   234     {
   235       fprintf (stderr, "can't get bits per sample\n");
   236       goto fail;
   237     }
   239   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   240     planar_config = 1;
   242   printf ("image length %u width %u, "
   243 #ifdef CHECK_DEPTH
   244           "depth %u, "
   245 #endif
   246           "planar config %u\n",
   247 	  image_length, image_width,
   248 #ifdef CHECK_DEPTH
   249 	  image_depth,
   250 #endif
   251 	  planar_config);
   253   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   254     resolution_unit = 2;
   255   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   256     x_resolution = 300;
   257   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   258     y_resolution = 300;
   260   printf ("resolution unit %u, x resolution %f, y resolution %f\n",
   261 	  resolution_unit, x_resolution, y_resolution);
   263   if (samples_per_pixel != 1)
   264     {
   265       fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
   266       goto fail;
   267     }
   269 #ifdef CHECK_DEPTH
   270   if (image_depth != 1)
   271     {
   272       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   273       goto fail;
   274     }
   275 #endif
   277   if (bits_per_sample != 1)
   278     {
   279       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   280       goto fail;
   281     }
   283   if (planar_config != 1)
   284     {
   285       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   286       goto fail;
   287     }
   289   tiff_temp_fd = mkstemp (tiff_temp_fn);
   290   if (tiff_temp_fd < 0)
   291     {
   292       fprintf (stderr, "can't create temporary TIFF file\n");
   293       goto fail;
   294     }
   296   tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
   297   if (! out)
   298     {
   299       fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
   300       goto fail;
   301     }
   303   TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, image_length);
   304   TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, image_width);
   305   TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
   307   TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, image_length);
   309   TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
   310   TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, x_resolution);
   311   TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, y_resolution);
   313   TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
   314   TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
   315   TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
   316   TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
   318   buffer = _TIFFmalloc (TIFFScanlineSize (in));
   319   if (! buffer)
   320     {
   321       fprintf (stderr, "failed to allocate buffer\n");
   322       goto fail;
   323     }
   325   for (row = 0; row < image_length; row++)
   326     {
   327       TIFFReadScanline (in, buffer, row, 0);
   328       TIFFWriteScanline (tiff_temp, buffer, row, 0);
   329     }
   331   _TIFFfree (buffer);
   332   TIFFClose (tiff_temp);
   334   width_points = (image_width / x_resolution) * POINTS_PER_INCH;
   335   height_points = (image_length / y_resolution) * POINTS_PER_INCH;
   337   if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
   338     {
   339       fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
   340       goto fail;
   341     }
   343   printf ("height_points %d, width_points %d\n", height_points, width_points);
   345   sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
   347   page = panda_newpage (out->pdf, pagesize);
   348   panda_imagebox (out->pdf,
   349 		  page,
   350 		  0, /* top */
   351 		  0, /* left */
   352 		  height_points, /* bottom */
   353 		  width_points, /* right */
   354 		  tiff_temp_fn,
   355 		  panda_image_tiff);
   357   result = 1;
   359  fail:
   360   if (tiff_temp_fd)
   361     unlink (tiff_temp_fn);
   362   return (result);
   363 }
   366 int main (int argc, char *argv[])
   367 {
   368   int result = 0;
   370   panda_init ();
   372   if (argc != 2)
   373     {
   374       fprintf (stderr, "usage: %s spec\n", argv [0]);
   375       result = 1;
   376       goto fail;
   377     }
   379   if (! parse_spec_file (argv [1]))
   380     {
   381       result = 2;
   382       goto fail;
   383     }
   385   if (! process_specs ())
   386     {
   387       result = 3;
   388       goto fail;
   389     }
   391  fail:
   392   close_tiff_input_file ();
   393   close_pdf_output_files ();
   394   return (result);
   395 }