Wed, 02 Jan 2002 10:18:13 +0000
bug fixes.
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 1.13 2002/01/02 02:18:13 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 pdf_file_attributes_t *attributes)
119 {
120 output_file_t *o;
122 if (out && (strcmp (name, out->name) == 0))
123 return (1);
124 for (o = output_files; o; o = o->next)
125 if (strcmp (name, o->name) == 0)
126 {
127 out = o;
128 return (1);
129 }
130 o = calloc (1, sizeof (output_file_t));
131 if (! o)
132 {
133 fprintf (stderr, "can't calloc output file struct for '%s'\n", name);
134 return (0);
135 }
137 o->name = strdup (name);
138 if (! o->name)
139 {
140 fprintf (stderr, "can't strdup output filename '%s'\n", name);
141 free (o);
142 return (0);
143 }
145 o->pdf = panda_open (name, "w");
146 if (! o->pdf)
147 {
148 fprintf (stderr, "can't open output file '%s'\n", name);
149 free (o->name);
150 free (o);
151 return (0);
152 }
154 if (attributes->author)
155 panda_setauthor (o->pdf, attributes->author);
156 if (attributes->creator)
157 panda_setcreator (o->pdf, attributes->creator);
158 if (attributes->title)
159 panda_settitle (o->pdf, attributes->title);
160 if (attributes->subject)
161 panda_setsubject (o->pdf, attributes->subject);
162 if (attributes->keywords)
163 panda_setkeywords (o->pdf, attributes->keywords);
165 /* prepend new output file onto list */
166 o->next = output_files;
167 output_files = o;
169 out = o;
170 return (1);
171 }
174 void process_page_numbers (int page_index,
175 int count,
176 int base,
177 page_label_t *page_label)
178 {
179 }
182 static Bitmap *rotate_bitmap (Bitmap *src,
183 float x_resolution,
184 float y_resolution,
185 input_attributes_t input_attributes)
186 {
187 Rect src_rect;
188 Point dest_upper_left;
189 int scan;
191 if (input_attributes.has_page_size)
192 {
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.upper_left.x = (src->width - width_pixels) / 2;
197 src_rect.upper_left.y = (src->height - height_pixels) / 2;
198 src_rect.lower_right.x = src_rect.upper_left.x + width_pixels;
199 src_rect.lower_right.y = src_rect.upper_left.y + height_pixels;
200 }
201 else
202 {
203 src_rect.upper_left.x = 0;
204 src_rect.upper_left.y = 0;
205 src_rect.lower_right.x = src->width;
206 src_rect.lower_right.y = src->height;
207 }
209 dest_upper_left.x = 0;
210 dest_upper_left.y = 0;
212 switch (input_attributes.rotation)
213 {
214 case 0: scan = ROT_0; break;
215 case 90: scan = ROT_90; break;
216 case 180: scan = ROT_180; break;
217 case 270: scan = ROT_270; break;
218 default:
219 fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
220 return (NULL);
221 }
223 return (bitblt (src,
224 src_rect,
225 NULL, /* dest_bitmap */
226 dest_upper_left,
227 scan,
228 TF_SRC));
229 }
232 #define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
234 boolean process_page (int image, /* range 1 .. n */
235 input_attributes_t input_attributes,
236 bookmark_t *bookmarks)
237 {
238 int result = 0;
240 u32 image_length, image_width;
241 u32 dest_image_length, dest_image_width;
242 #ifdef CHECK_DEPTH
243 u32 image_depth;
244 #endif
246 u16 samples_per_pixel;
247 u16 bits_per_sample;
248 u16 planar_config;
250 u16 resolution_unit;
251 float x_resolution, y_resolution;
252 float dest_x_resolution, dest_y_resolution;
254 int scanline_size;
256 int width_points, height_points; /* really 1/72 inch units rather than
257 points */
259 Bitmap *src_bitmap;
260 Bitmap *dest_bitmap;
261 int row;
263 panda_page *page;
265 int tiff_temp_fd;
266 char tiff_temp_fn [] = "/var/tmp/tiff2pdf-XXXXXX\0";
267 TIFF *tiff_temp;
269 char pagesize [26]; /* Needs to hold two ints of four characters (0..3420),
270 two zeros, three spaces, two brackets, and a NULL.
271 Added an extra ten characters just in case. */
273 if (! TIFFSetDirectory (in, image - 1))
274 {
275 fprintf (stderr, "can't find page %d of input file\n", image);
276 goto fail;
277 }
278 if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
279 {
280 fprintf (stderr, "can't get image length\n");
281 goto fail;
282 }
283 if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
284 {
285 fprintf (stderr, "can't get image width\n");
286 goto fail;
287 }
289 if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
290 {
291 fprintf (stderr, "can't get samples per pixel\n");
292 goto fail;
293 }
295 #ifdef CHECK_DEPTH
296 if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
297 {
298 fprintf (stderr, "can't get image depth\n");
299 goto fail;
300 }
301 #endif
303 if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
304 {
305 fprintf (stderr, "can't get bits per sample\n");
306 goto fail;
307 }
309 if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
310 planar_config = 1;
312 if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
313 resolution_unit = 2;
314 if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
315 x_resolution = 300;
316 if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
317 y_resolution = 300;
319 if (samples_per_pixel != 1)
320 {
321 fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
322 goto fail;
323 }
325 #ifdef CHECK_DEPTH
326 if (image_depth != 1)
327 {
328 fprintf (stderr, "image depth %u, must be 1\n", image_depth);
329 goto fail;
330 }
331 #endif
333 if (bits_per_sample != 1)
334 {
335 fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
336 goto fail;
337 }
339 if (planar_config != 1)
340 {
341 fprintf (stderr, "planar config %u, must be 1\n", planar_config);
342 goto fail;
343 }
345 if (input_attributes.has_resolution)
346 {
347 x_resolution = input_attributes.x_resolution;
348 y_resolution = input_attributes.y_resolution;
349 }
351 if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
352 {
353 dest_image_width = image_length;
354 dest_image_length = image_width;
355 dest_x_resolution = y_resolution;
356 dest_y_resolution = x_resolution;
357 SWAP (int, width_points, height_points);
358 }
359 else
360 {
361 dest_image_width = image_width;
362 dest_image_length = image_length;
363 dest_x_resolution = x_resolution;
364 dest_y_resolution = y_resolution;
365 }
367 scanline_size = TIFFScanlineSize (in);
369 src_bitmap = create_bitmap (image_width, image_length);
370 if (! src_bitmap)
371 {
372 fprintf (stderr, "can't allocate bitmap\n");
373 goto fail;
374 }
376 if (src_bitmap->rowbytes != scanline_size)
377 {
378 printf ("image_width %d\n", image_width);
379 printf ("rowbytes %d\n", src_bitmap->rowbytes);
380 printf ("TIFFScanlineSize %d\n", scanline_size);
381 }
383 for (row = 0; row < image_length; row++)
384 TIFFReadScanline (in,
385 src_bitmap->bits + row * src_bitmap->rowbytes,
386 row,
387 0);
389 for (row = 0; row < dest_image_length; row++)
390 if (1 != TIFFReadScanline (in,
391 src_bitmap->bits + row * src_bitmap->rowbytes,
392 row,
393 0))
394 {
395 fprintf (stderr, "can't read TIFF scanline\n");
396 goto fail;
397 }
399 dest_bitmap = rotate_bitmap (src_bitmap,
400 x_resolution,
401 y_resolution,
402 input_attributes);
403 if (! dest_bitmap)
404 {
405 fprintf (stderr, "can't allocate bitmap\n");
406 goto fail;
407 }
409 tiff_temp_fd = mkstemp (tiff_temp_fn);
410 if (tiff_temp_fd < 0)
411 {
412 fprintf (stderr, "can't create temporary TIFF file\n");
413 goto fail;
414 }
416 tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
417 if (! out)
418 {
419 fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
420 goto fail;
421 }
423 TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, dest_bitmap->height);
424 TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, dest_bitmap->width);
425 TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
427 TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, dest_bitmap->height);
429 TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
430 TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
431 TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
433 TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
434 TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
435 TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
436 TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
438 for (row = 0; row < dest_bitmap->height; row++)
439 if (1 != TIFFWriteScanline (tiff_temp,
440 dest_bitmap->bits + row * dest_bitmap->rowbytes,
441 row,
442 0))
443 {
444 fprintf (stderr, "can't write TIFF scanline\n");
445 goto fail;
446 }
448 TIFFClose (tiff_temp);
450 width_points = (dest_bitmap->width / dest_x_resolution) * POINTS_PER_INCH;
451 height_points = (dest_bitmap->height / dest_y_resolution) * POINTS_PER_INCH;
453 free_bitmap (dest_bitmap);
454 free_bitmap (src_bitmap);
456 if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
457 {
458 fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
459 goto fail;
460 }
462 sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
464 page = panda_newpage (out->pdf, pagesize);
465 panda_imagebox (out->pdf,
466 page,
467 0, /* top */
468 0, /* left */
469 height_points, /* bottom */
470 width_points, /* right */
471 tiff_temp_fn,
472 panda_image_tiff);
474 result = 1;
476 fail:
477 if (tiff_temp_fd)
478 unlink (tiff_temp_fn);
479 return (result);
480 }
483 int main (int argc, char *argv[])
484 {
485 int result = 0;
487 panda_init ();
489 if (argc != 2)
490 {
491 fprintf (stderr, "usage: %s spec\n", argv [0]);
492 result = 1;
493 goto fail;
494 }
496 if (! parse_spec_file (argv [1]))
497 {
498 result = 2;
499 goto fail;
500 }
502 if (! process_specs ())
503 {
504 result = 3;
505 goto fail;
506 }
508 fail:
509 close_tiff_input_file ();
510 close_pdf_output_files ();
511 return (result);
512 }