Tue, 22 Jan 2002 09:42:42 +0000
*** empty log message ***
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 1.15 2002/01/22 01:42:42 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 /* frees original! */
183 static Bitmap *resize_bitmap (Bitmap *src,
184 float x_resolution,
185 float y_resolution,
186 input_attributes_t input_attributes)
187 {
188 Rect src_rect;
189 Point dest_min;
190 Bitmap *dest;
192 int width_pixels = input_attributes.page_size.width * x_resolution;
193 int height_pixels = input_attributes.page_size.height * y_resolution;
195 src_rect.min.x = (rect_width (& src->rect) - width_pixels) / 2;
196 src_rect.min.y = (rect_height (& src->rect) - height_pixels) / 2;
197 src_rect.max.x = src_rect.min.x + width_pixels;
198 src_rect.max.y = src_rect.min.y + height_pixels;
200 dest_min.x = 0;
201 dest_min.y = 0;
203 dest = bitblt (src, & src_rect, NULL, & dest_min, TF_SRC, 0);
204 free_bitmap (src);
205 return (dest);
206 }
209 /* "in place" rotation */
210 static void rotate_bitmap (Bitmap *src,
211 input_attributes_t input_attributes)
212 {
213 switch (input_attributes.rotation)
214 {
215 case 0: break;
216 case 90: rot_90 (src); break;
217 case 180: rot_180 (src); break;
218 case 270: rot_270 (src); break;
219 default:
220 fprintf (stderr, "rotation must be 0, 90, 180, or 270\n");
221 }
222 }
225 #define SWAP(type,a,b) do { type temp; temp = a; a = b; b = temp; } while (0)
227 boolean process_page (int image, /* range 1 .. n */
228 input_attributes_t input_attributes,
229 bookmark_t *bookmarks)
230 {
231 int result = 0;
233 u32 image_length, image_width;
234 u32 dest_image_length, dest_image_width;
235 #ifdef CHECK_DEPTH
236 u32 image_depth;
237 #endif
239 u16 samples_per_pixel;
240 u16 bits_per_sample;
241 u16 planar_config;
243 u16 resolution_unit;
244 float x_resolution, y_resolution;
245 float dest_x_resolution, dest_y_resolution;
247 int width_points, height_points; /* really 1/72 inch units rather than
248 points */
250 Rect rect;
251 Bitmap *bitmap;
253 int row;
255 panda_page *page;
257 int tiff_temp_fd;
258 char tiff_temp_fn [] = "/var/tmp/tiff2pdf-XXXXXX\0";
259 TIFF *tiff_temp;
261 char pagesize [26]; /* Needs to hold two ints of four characters (0..3420),
262 two zeros, three spaces, two brackets, and a NULL.
263 Added an extra ten characters just in case. */
265 if (! TIFFSetDirectory (in, image - 1))
266 {
267 fprintf (stderr, "can't find page %d of input file\n", image);
268 goto fail;
269 }
270 if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
271 {
272 fprintf (stderr, "can't get image length\n");
273 goto fail;
274 }
275 if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
276 {
277 fprintf (stderr, "can't get image width\n");
278 goto fail;
279 }
281 if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
282 {
283 fprintf (stderr, "can't get samples per pixel\n");
284 goto fail;
285 }
287 #ifdef CHECK_DEPTH
288 if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
289 {
290 fprintf (stderr, "can't get image depth\n");
291 goto fail;
292 }
293 #endif
295 if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
296 {
297 fprintf (stderr, "can't get bits per sample\n");
298 goto fail;
299 }
301 if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
302 planar_config = 1;
304 if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
305 resolution_unit = 2;
306 if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
307 x_resolution = 300;
308 if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
309 y_resolution = 300;
311 if (samples_per_pixel != 1)
312 {
313 fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
314 goto fail;
315 }
317 #ifdef CHECK_DEPTH
318 if (image_depth != 1)
319 {
320 fprintf (stderr, "image depth %u, must be 1\n", image_depth);
321 goto fail;
322 }
323 #endif
325 if (bits_per_sample != 1)
326 {
327 fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
328 goto fail;
329 }
331 if (planar_config != 1)
332 {
333 fprintf (stderr, "planar config %u, must be 1\n", planar_config);
334 goto fail;
335 }
337 if (input_attributes.has_resolution)
338 {
339 x_resolution = input_attributes.x_resolution;
340 y_resolution = input_attributes.y_resolution;
341 }
343 if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
344 {
345 dest_image_width = image_length;
346 dest_image_length = image_width;
347 dest_x_resolution = y_resolution;
348 dest_y_resolution = x_resolution;
349 SWAP (int, width_points, height_points);
350 }
351 else
352 {
353 dest_image_width = image_width;
354 dest_image_length = image_length;
355 dest_x_resolution = x_resolution;
356 dest_y_resolution = y_resolution;
357 }
359 rect.min.x = 0;
360 rect.min.y = 0;
361 rect.max.x = image_width;
362 rect.max.y = image_length;
364 bitmap = create_bitmap (& rect);
366 if (! bitmap)
367 {
368 fprintf (stderr, "can't allocate bitmap\n");
369 goto fail;
370 }
372 for (row = 0; row < image_length; row++)
373 if (1 != TIFFReadScanline (in,
374 bitmap->bits + row * bitmap->row_words,
375 row,
376 0))
377 {
378 fprintf (stderr, "can't read TIFF scanline\n");
379 goto fail;
380 }
382 bitmap = resize_bitmap (bitmap,
383 x_resolution,
384 y_resolution,
385 input_attributes);
387 rotate_bitmap (bitmap,
388 input_attributes);
390 tiff_temp_fd = mkstemp (tiff_temp_fn);
391 if (tiff_temp_fd < 0)
392 {
393 fprintf (stderr, "can't create temporary TIFF file\n");
394 goto fail;
395 }
397 tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
398 if (! out)
399 {
400 fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
401 goto fail;
402 }
404 TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, rect_height (& bitmap->rect));
405 TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, rect_width (& bitmap->rect));
406 TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
408 TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, rect_height (& bitmap->rect));
410 TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
411 TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
412 TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
414 TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
415 TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
416 TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
417 TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
419 for (row = 0; row < rect_height (& bitmap->rect); row++)
420 if (1 != TIFFWriteScanline (tiff_temp,
421 bitmap->bits + row * bitmap->row_words,
422 row,
423 0))
424 {
425 fprintf (stderr, "can't write TIFF scanline\n");
426 goto fail;
427 }
429 TIFFClose (tiff_temp);
431 width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
432 height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
434 free_bitmap (bitmap);
436 if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
437 {
438 fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
439 goto fail;
440 }
442 sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
444 page = panda_newpage (out->pdf, pagesize);
445 panda_imagebox (out->pdf,
446 page,
447 0, /* top */
448 0, /* left */
449 height_points, /* bottom */
450 width_points, /* right */
451 tiff_temp_fn,
452 panda_image_tiff);
454 result = 1;
456 fail:
457 if (tiff_temp_fd)
458 unlink (tiff_temp_fn);
459 return (result);
460 }
463 int main (int argc, char *argv[])
464 {
465 int result = 0;
467 panda_init ();
469 if (argc != 2)
470 {
471 fprintf (stderr, "usage: %s spec\n", argv [0]);
472 result = 1;
473 goto fail;
474 }
476 if (! parse_spec_file (argv [1]))
477 {
478 result = 2;
479 goto fail;
480 }
482 if (! process_specs ())
483 {
484 result = 3;
485 goto fail;
486 }
488 fail:
489 close_tiff_input_file ();
490 close_pdf_output_files ();
491 return (result);
492 }