tumble.c

Mon, 26 Aug 2002 05:43:49 +0000

author
eric
date
Mon, 26 Aug 2002 05:43:49 +0000
changeset 47
bfc6aaa089b0
parent 46
20fda1ec5f17
child 48
3d0be1c1c1b2
permissions
-rw-r--r--

fixed 'middle-endian' output from TIFFReadScanline

     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 1.18 2002/08/25 21:43:49 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>
    30 #include <tiffio.h>
    31 #define TIFF_REVERSE_BITS
    33 #include <panda/functions.h>
    34 #include <panda/constants.h>
    36 #include "type.h"
    37 #include "bitblt.h"
    38 #include "semantics.h"
    39 #include "parser.tab.h"
    40 #include "t2p.h"
    43 #define POINTS_PER_INCH 72
    45 /* page size limited by Acrobat Reader to 45 inches on a side */
    46 #define PAGE_MAX_INCHES 45
    47 #define PAGE_MAX_POINTS (PAGE_MAX_INCHES * POINTS_PER_INCH)
    50 typedef struct output_file_t
    51 {
    52   struct output_file_t *next;
    53   char *name;
    54   panda_pdf *pdf;
    55 } output_file_t;
    58 char *in_filename;
    59 TIFF *in;
    60 output_file_t *output_files;
    61 output_file_t *out;
    62 /* panda_pdf *out; */
    65 boolean close_tiff_input_file (void)
    66 {
    67   if (in)
    68     {
    69       free (in_filename);
    70       TIFFClose (in);
    71     }
    72   in = NULL;
    73   in_filename = NULL;
    74   return (1);
    75 }
    77 boolean open_tiff_input_file (char *name)
    78 {
    79   if (in)
    80     {
    81       if (strcmp (name, in_filename) == 0)
    82 	return (1);
    83       close_tiff_input_file ();
    84     }
    85   in_filename = strdup (name);
    86   if (! in_filename)
    87     {
    88       fprintf (stderr, "can't strdup input filename '%s'\n", name);
    89       return (0);
    90     }
    91   in = TIFFOpen (name, "r");
    92   if (! in)
    93     {
    94       fprintf (stderr, "can't open input file '%s'\n", name);
    95       free (in_filename);
    96       return (0);
    97     }
    98   return (1);
    99 }
   102 boolean close_pdf_output_files (void)
   103 {
   104   output_file_t *o, *n;
   106   for (o = output_files; o; o = n)
   107     {
   108       n = o->next;
   109       panda_close (o->pdf);
   110       free (o->name);
   111       free (o);
   112     }
   113   out = NULL;
   114   output_files = NULL;
   115   return (1);
   116 }
   118 boolean open_pdf_output_file (char *name,
   119 			      pdf_file_attributes_t *attributes)
   120 {
   121   output_file_t *o;
   123   if (out && (strcmp (name, out->name) == 0))
   124     return (1);
   125   for (o = output_files; o; o = o->next)
   126     if (strcmp (name, o->name) == 0)
   127       {
   128 	out = o;
   129 	return (1);
   130       }
   131   o = calloc (1, sizeof (output_file_t));
   132   if (! o)
   133     {
   134       fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
   135       return (0);
   136    }
   138   o->name = strdup (name);
   139   if (! o->name)
   140     {
   141       fprintf (stderr, "can't strdup output filename '%s'\n", name);
   142       free (o);
   143       return (0);
   144     }
   146   o->pdf = panda_open (name, "w");
   147   if (! o->pdf)
   148     {
   149       fprintf (stderr, "can't open output file '%s'\n", name);
   150       free (o->name);
   151       free (o);
   152       return (0);
   153     }
   155   if (attributes->author)
   156     panda_setauthor (o->pdf, attributes->author);
   157   if (attributes->creator)
   158     panda_setcreator (o->pdf, attributes->creator);
   159   if (attributes->title)
   160     panda_settitle (o->pdf, attributes->title);
   161   if (attributes->subject)
   162     panda_setsubject (o->pdf, attributes->subject);
   163   if (attributes->keywords)
   164     panda_setkeywords (o->pdf, attributes->keywords);
   166   /* prepend new output file onto list */
   167   o->next = output_files;
   168   output_files = o;
   170   out = o;
   171   return (1);
   172 }
   175 void process_page_numbers (int page_index,
   176 			   int count,
   177 			   int base,
   178 			   page_label_t *page_label)
   179 {
   180 }
   183 /* frees original! */
   184 static Bitmap *resize_bitmap (Bitmap *src,
   185 			      float x_resolution,
   186 			      float y_resolution,
   187 			      input_attributes_t input_attributes)
   188 {
   189   Rect src_rect;
   190   Point dest_min;
   191   Bitmap *dest;
   193   int width_pixels = input_attributes.page_size.width * x_resolution;
   194   int height_pixels = input_attributes.page_size.height * y_resolution;
   196   src_rect.min.x = (rect_width (& src->rect) - width_pixels) / 2;
   197   src_rect.min.y = (rect_height (& src->rect) - height_pixels) / 2;
   198   src_rect.max.x = src_rect.min.x + width_pixels;
   199   src_rect.max.y = src_rect.min.y + height_pixels;
   201   dest_min.x = 0;
   202   dest_min.y = 0;
   204   dest = bitblt (src, & src_rect, NULL, & dest_min, TF_SRC, 0);
   205   free_bitmap (src);
   206   return (dest);
   207 }
   210 /* "in place" rotation */
   211 static void rotate_bitmap (Bitmap *src,
   212 			   input_attributes_t input_attributes)
   213 {
   214   switch (input_attributes.rotation)
   215     {
   216     case 0: break;
   217     case 90: rot_90 (src); break;
   218     case 180: rot_180 (src); break;
   219     case 270: rot_270 (src); break;
   220     default:
   221       fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
   222     }
   223 }
   226 #define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
   228 boolean process_page (int image,  /* range 1 .. n */
   229 		      input_attributes_t input_attributes,
   230 		      bookmark_t *bookmarks)
   231 {
   232   int result = 0;
   234   u32 image_length, image_width;
   235   u32 dest_image_length, dest_image_width;
   236 #ifdef CHECK_DEPTH
   237   u32 image_depth;
   238 #endif
   240   u16 samples_per_pixel;
   241   u16 bits_per_sample;
   242   u16 planar_config;
   244   u16 resolution_unit;
   245   float x_resolution, y_resolution;
   246   float dest_x_resolution, dest_y_resolution;
   248   int width_points, height_points;  /* really 1/72 inch units rather than
   249 				       points */
   251   Rect rect;
   252   Bitmap *bitmap;
   254   int row;
   256   panda_page *page;
   258   int tiff_temp_fd;
   259   char tiff_temp_fn [] = "/var/tmp/t2p-XXXXXX\0";
   260   TIFF *tiff_temp;
   262   char pagesize [26];  /* Needs to hold two ints of four characters (0..3420),
   263 			  two zeros, three spaces, two brackets, and a NULL.
   264                           Added an extra ten characters just in case. */
   266   if (! TIFFSetDirectory (in, image - 1))
   267     {
   268       fprintf (stderr, "can't find page %d of input file\n", image);
   269       goto fail;
   270     }
   271   if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
   272     {
   273       fprintf (stderr, "can't get image length\n");
   274       goto fail;
   275     }
   276   if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
   277     {
   278       fprintf (stderr, "can't get image width\n");
   279       goto fail;
   280     }
   282   if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
   283     {
   284       fprintf (stderr, "can't get samples per pixel\n");
   285       goto fail;
   286     }
   288 #ifdef CHECK_DEPTH
   289   if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
   290     {
   291       fprintf (stderr, "can't get image depth\n");
   292       goto fail;
   293     }
   294 #endif
   296   if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
   297     {
   298       fprintf (stderr, "can't get bits per sample\n");
   299       goto fail;
   300     }
   302   if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
   303     planar_config = 1;
   305   if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
   306     resolution_unit = 2;
   307   if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
   308     x_resolution = 300;
   309   if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
   310     y_resolution = 300;
   312   if (samples_per_pixel != 1)
   313     {
   314       fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
   315       goto fail;
   316     }
   318 #ifdef CHECK_DEPTH
   319   if (image_depth != 1)
   320     {
   321       fprintf (stderr, "image depth %u, must be 1\n", image_depth);
   322       goto fail;
   323     }
   324 #endif
   326   if (bits_per_sample != 1)
   327     {
   328       fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
   329       goto fail;
   330     }
   332   if (planar_config != 1)
   333     {
   334       fprintf (stderr, "planar config %u, must be 1\n", planar_config);
   335       goto fail;
   336     }
   338   if (input_attributes.has_resolution)
   339     {
   340       x_resolution = input_attributes.x_resolution;
   341       y_resolution = input_attributes.y_resolution;
   342     }
   344   if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
   345     {
   346       dest_image_width  = image_length;
   347       dest_image_length = image_width;
   348       dest_x_resolution = y_resolution;
   349       dest_y_resolution = x_resolution;
   350       SWAP (int, width_points, height_points);
   351     }
   352   else
   353     {
   354       dest_image_width = image_width;
   355       dest_image_length = image_length;
   356       dest_x_resolution = x_resolution;
   357       dest_y_resolution = y_resolution;
   358     }
   360   rect.min.x = 0;
   361   rect.min.y = 0;
   362   rect.max.x = image_width;
   363   rect.max.y = image_length;
   365   bitmap = create_bitmap (& rect);
   367   if (! bitmap)
   368     {
   369       fprintf (stderr, "can't allocate bitmap\n");
   370       goto fail;
   371     }
   373   for (row = 0; row < image_length; row++)
   374     if (1 != TIFFReadScanline (in,
   375 			       bitmap->bits + row * bitmap->row_words,
   376 			       row,
   377 			       0))
   378       {
   379 	fprintf (stderr, "can't read TIFF scanline\n");
   380 	goto fail;
   381       }
   383 #ifdef TIFF_REVERSE_BITS
   384   reverse_bits ((u8 *) bitmap->bits,
   385 		image_length * bitmap->row_words * sizeof (word_type));
   386 #endif /* TIFF_REVERSE_BITS */
   388   if (input_attributes.has_page_size)
   389     bitmap = resize_bitmap (bitmap,
   390 			    x_resolution,
   391 			    y_resolution,
   392 			    input_attributes);
   394   rotate_bitmap (bitmap,
   395 		 input_attributes);
   397   tiff_temp_fd = mkstemp (tiff_temp_fn);
   398   if (tiff_temp_fd < 0)
   399     {
   400       fprintf (stderr, "can't create temporary TIFF file\n");
   401       goto fail;
   402     }
   404   tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
   405   if (! out)
   406     {
   407       fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
   408       goto fail;
   409     }
   411   TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, rect_height (& bitmap->rect));
   412   TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, rect_width (& bitmap->rect));
   413   TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
   415   TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, rect_height (& bitmap->rect));
   417   TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
   418   TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
   419   TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
   421   TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
   422   TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
   423   TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
   424   TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
   426 #ifdef TIFF_REVERSE_BITS
   427   reverse_bits ((u8 *) bitmap->bits,
   428 		image_length * bitmap->row_words * sizeof (word_type));
   429 #endif /* TIFF_REVERSE_BITS */
   431   for (row = 0; row < rect_height (& bitmap->rect); row++)
   432     if (1 != TIFFWriteScanline (tiff_temp,
   433 				bitmap->bits + row * bitmap->row_words,
   434 				row,
   435 				0))
   436       {
   437 	fprintf (stderr, "can't write TIFF scanline\n");
   438 	goto fail;
   439       }
   441   TIFFClose (tiff_temp);
   443   width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
   444   height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
   446   free_bitmap (bitmap);
   448   if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
   449     {
   450       fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
   451       goto fail;
   452     }
   454   sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
   456   page = panda_newpage (out->pdf, pagesize);
   457   panda_imagebox (out->pdf,
   458 		  page,
   459 		  0, /* top */
   460 		  0, /* left */
   461 		  height_points, /* bottom */
   462 		  width_points, /* right */
   463 		  tiff_temp_fn,
   464 		  panda_image_tiff);
   466   result = 1;
   468  fail:
   469   if (tiff_temp_fd)
   470     unlink (tiff_temp_fn);
   471   return (result);
   472 }
   475 int main (int argc, char *argv[])
   476 {
   477   int result = 0;
   479   panda_init ();
   481   if (argc != 2)
   482     {
   483       fprintf (stderr, "usage: %s spec\n", argv [0]);
   484       result = 1;
   485       goto fail;
   486     }
   488   if (! parse_spec_file (argv [1]))
   489     {
   490       result = 2;
   491       goto fail;
   492     }
   494   if (! process_specs ())
   495     {
   496       result = 3;
   497       goto fail;
   498     }
   500  fail:
   501   close_tiff_input_file ();
   502   close_pdf_output_files ();
   503   return (result);
   504 }