t2p.c

Sat, 29 Dec 2001 18:59:47 +0000

author
eric
date
Sat, 29 Dec 2001 18:59:47 +0000
changeset 12
c3e2c2344560
parent 10
3184d26a9596
child 14
4c261fbf8c77
permissions
-rw-r--r--

*** empty log message ***

     1 /*
     2  * tiffg4: reencode a bilevel TIFF file as a single-strip TIFF Class F Group 4
     3  * Main program
     4  * $Id: t2p.c,v 1.2 2001/12/29 10:59:47 eric Exp $
     5  * Copyright 2001 Eric Smith <eric@brouhaha.com>
     6  *
     7  * This program is free software; you can redistribute it and/or modify
     8  * it under the terms of the GNU General Public License version 2 as
     9  * published by the Free Software Foundation.  Note that permission is
    10  * not granted to redistribute this program under the terms of any
    11  * other version of the General Public License.
    12  *
    13  * This program is distributed in the hope that it will be useful,
    14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
    15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
    16  * GNU General Public License for more details.
    17  *
    18  * You should have received a copy of the GNU General Public License
    19  * along with this program; if not, write to the Free Software
    20  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111  USA
    21  */
    24 #include <stdio.h>
    25 #include <tiffio.h>
    26 #include <panda/functions.h>
    27 #include <panda/constants.h>
    29 #include "type.h"
    30 #include "bitblt.h"
    31 #include "parser.tab.h"
    32 #include "tiff2pdf.h"
    35 FILE *yyin;
    36 TIFF *in;
    37 panda_pdf *out;
    40 boolean close_tiff_input_file (void)
    41 {
    42   if (in)
    43     TIFFClose (in);
    44   in = NULL;
    45   return (1);
    46 }
    48 boolean open_tiff_input_file (char *name)
    49 {
    50   if (in)
    51     close_tiff_input_file ();
    52   in = TIFFOpen (name, "r");
    53   if (! in)
    54     {
    55       fprintf (stderr, "can't open input file '%s'\n", name);
    56       return (0);
    57     }
    58   return (1);
    59 }
    62 boolean close_pdf_output_file (void)
    63 {
    64   if (out)
    65     panda_close (out);
    66   out = NULL;
    67   return (1);
    68 }
    70 boolean open_pdf_output_file (char *name)
    71 {
    72   if (out)
    73     close_pdf_output_file ();
    74   out = panda_open (name, "w");
    75   if (! out)
    76     {
    77       return (0);
    78     }
    79   return (1);
    80 }
    83 boolean process_page (int image)  /* range 1 .. n */
    84 {
    85   u32 image_length, image_width;
    86 #ifdef CHECK_DEPTH
    87   u32 image_depth;
    88 #endif
    89   u16 bits_per_sample;
    90   u16 planar_config;
    91   u16 resolution_unit;
    92   float x_resolution, y_resolution;
    94   char *buffer;
    95   u32 row;
    97   if (! TIFFSetDirectory (in, image - 1))
    98     {
    99       fprintf (stderr, "can't find page %d of input file\n", image);
   100       goto fail;
   101     }
   102   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   103     {
   104       fprintf (stderr, "can't get image length\n");
   105       goto fail;
   106     }
   107   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   108     {
   109       fprintf (stderr, "can't get image width\n");
   110       goto fail;
   111     }
   112 #ifdef CHECK_DEPTH
   113   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   114     {
   115       fprintf (stderr, "can't get image depth\n");
   116       goto fail;
   117     }
   118 #endif
   120   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   121     {
   122       fprintf (stderr, "can't get bits per sample\n");
   123       goto fail;
   124     }
   126   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   127     planar_config = 1;
   129   printf ("image length %u width %u, "
   130 #ifdef CHECK_DEPTH
   131           "depth %u, "
   132 #endif
   133           "planar config %u\n",
   134 	  image_length, image_width,
   135 #ifdef CHECK_DEPTH
   136 	  image_depth,
   137 #endif
   138 	  planar_config);
   140   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   141     resolution_unit = 2;
   142   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   143     x_resolution = 300;
   144   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   145     y_resolution = 300;
   147   printf ("resolution unit %u, x resolution %f, y resolution %f\n",
   148 	  resolution_unit, x_resolution, y_resolution);
   150 #ifdef CHECK_DEPTH
   151   if (image_depth != 1)
   152     {
   153       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   154       goto fail;
   155     }
   156 #endif
   158   if (bits_per_sample != 1)
   159     {
   160       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   161       goto fail;
   162     }
   164   if (planar_config != 1)
   165     {
   166       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   167       goto fail;
   168     }
   170 #if 0
   171   TIFFSetField (out, TIFFTAG_IMAGELENGTH, image_length);
   172   TIFFSetField (out, TIFFTAG_IMAGEWIDTH, image_width);
   173   TIFFSetField (out, TIFFTAG_PLANARCONFIG, planar_config);
   175   TIFFSetField (out, TIFFTAG_ROWSPERSTRIP, image_length);
   177   TIFFSetField (out, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
   178   TIFFSetField (out, TIFFTAG_XRESOLUTION, x_resolution);
   179   TIFFSetField (out, TIFFTAG_YRESOLUTION, y_resolution);
   181   TIFFSetField (out, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
   182   TIFFSetField (out, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
   183   TIFFSetField (out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
   184 #endif
   186   buffer = _TIFFmalloc (TIFFScanlineSize (in));
   187   if (! buffer)
   188     {
   189       fprintf (stderr, "failed to allocate buffer\n");
   190       goto fail;
   191     }
   193   for (row = 0; row < image_length; row++)
   194     {
   195       TIFFReadScanline (in, buffer, row, 0);
   196 #if 0
   197       TIFFWriteScanline (out, buffer, row, 0);
   198 #endif
   199     }
   201   _TIFFfree (buffer);
   203   return (1);
   205  fail:
   206   return (0);
   207 }
   210 void yyerror (char *s)
   211 {
   212   fprintf (stderr, "%s\n", s);
   213 }
   216 int main (int argc, char *argv[])
   217 {
   218   int result = 0;
   220   panda_init ();
   222   if (argc != 2)
   223     {
   224       fprintf (stderr, "usage: %s spec\n", argv [0]);
   225       result = 1;
   226       goto fail;
   227     }
   229   yyin = fopen (argv [2], "r");
   230   if (! yyin)
   231     {
   232       fprintf (stderr, "can't open spec file '%s'\n", argv [2]);
   233       result = 3;
   234       goto fail;
   235     }
   237   yyparse ();
   239  fail:
   240   fclose (yyin);
   241   close_tiff_input_file ();
   242   close_pdf_output_file ();
   243   return (result);
   244 }