t2p.c

Mon, 31 Dec 2001 08:25:04 +0000

author
eric
date
Mon, 31 Dec 2001 08:25:04 +0000
changeset 23
1fe64161aaac
parent 18
3de372e4b230
child 25
139b91f9a224
permissions
-rw-r--r--

added input and output attribute structures as arguments to process_page().

     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 1.6 2001/12/31 00:25:04 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 "semantics.h"
    32 #include "parser.tab.h"
    33 #include "tiff2pdf.h"
    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 		      input_attributes_t input_attributes,
    85 		      output_attributes_t output_attributes)
    86 {
    87   u32 image_length, image_width;
    88 #ifdef CHECK_DEPTH
    89   u32 image_depth;
    90 #endif
    91   u16 bits_per_sample;
    92   u16 planar_config;
    93   u16 resolution_unit;
    94   float x_resolution, y_resolution;
    96   char *buffer;
    97   u32 row;
    99   if (! TIFFSetDirectory (in, image - 1))
   100     {
   101       fprintf (stderr, "can't find page %d of input file\n", image);
   102       goto fail;
   103     }
   104   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   105     {
   106       fprintf (stderr, "can't get image length\n");
   107       goto fail;
   108     }
   109   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   110     {
   111       fprintf (stderr, "can't get image width\n");
   112       goto fail;
   113     }
   114 #ifdef CHECK_DEPTH
   115   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   116     {
   117       fprintf (stderr, "can't get image depth\n");
   118       goto fail;
   119     }
   120 #endif
   122   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   123     {
   124       fprintf (stderr, "can't get bits per sample\n");
   125       goto fail;
   126     }
   128   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   129     planar_config = 1;
   131   printf ("image length %u width %u, "
   132 #ifdef CHECK_DEPTH
   133           "depth %u, "
   134 #endif
   135           "planar config %u\n",
   136 	  image_length, image_width,
   137 #ifdef CHECK_DEPTH
   138 	  image_depth,
   139 #endif
   140 	  planar_config);
   142   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   143     resolution_unit = 2;
   144   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   145     x_resolution = 300;
   146   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   147     y_resolution = 300;
   149   printf ("resolution unit %u, x resolution %f, y resolution %f\n",
   150 	  resolution_unit, x_resolution, y_resolution);
   152 #ifdef CHECK_DEPTH
   153   if (image_depth != 1)
   154     {
   155       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   156       goto fail;
   157     }
   158 #endif
   160   if (bits_per_sample != 1)
   161     {
   162       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   163       goto fail;
   164     }
   166   if (planar_config != 1)
   167     {
   168       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   169       goto fail;
   170     }
   172 #if 0
   173   TIFFSetField (out, TIFFTAG_IMAGELENGTH, image_length);
   174   TIFFSetField (out, TIFFTAG_IMAGEWIDTH, image_width);
   175   TIFFSetField (out, TIFFTAG_PLANARCONFIG, planar_config);
   177   TIFFSetField (out, TIFFTAG_ROWSPERSTRIP, image_length);
   179   TIFFSetField (out, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
   180   TIFFSetField (out, TIFFTAG_XRESOLUTION, x_resolution);
   181   TIFFSetField (out, TIFFTAG_YRESOLUTION, y_resolution);
   183   TIFFSetField (out, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
   184   TIFFSetField (out, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
   185   TIFFSetField (out, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
   186 #endif
   188   buffer = _TIFFmalloc (TIFFScanlineSize (in));
   189   if (! buffer)
   190     {
   191       fprintf (stderr, "failed to allocate buffer\n");
   192       goto fail;
   193     }
   195   for (row = 0; row < image_length; row++)
   196     {
   197       TIFFReadScanline (in, buffer, row, 0);
   198 #if 0
   199       TIFFWriteScanline (out, buffer, row, 0);
   200 #endif
   201     }
   203   _TIFFfree (buffer);
   205   return (1);
   207  fail:
   208   return (0);
   209 }
   212 int main (int argc, char *argv[])
   213 {
   214   int result = 0;
   216   panda_init ();
   218   if (argc != 2)
   219     {
   220       fprintf (stderr, "usage: %s spec\n", argv [0]);
   221       result = 1;
   222       goto fail;
   223     }
   225   if (! parse_spec_file (argv [1]))
   226     goto fail;
   228  fail:
   229   close_tiff_input_file ();
   230   close_pdf_output_file ();
   231   return (result);
   232 }