Wed, 02 Jan 2002 16:39:39 +0000
started work on bitblt optimization - split rotate functions from bitblt.
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 1.14 2002/01/02 08:39:39 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);
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 scanline_size;
249 int width_points, height_points; /* really 1/72 inch units rather than
250 points */
252 Rect rect;
253 Bitmap *bitmap;
255 int row;
257 panda_page *page;
259 int tiff_temp_fd;
260 char tiff_temp_fn [] = "/var/tmp/tiff2pdf-XXXXXX\0";
261 TIFF *tiff_temp;
263 char pagesize [26]; /* Needs to hold two ints of four characters (0..3420),
264 two zeros, three spaces, two brackets, and a NULL.
265 Added an extra ten characters just in case. */
267 if (! TIFFSetDirectory (in, image - 1))
268 {
269 fprintf (stderr, "can't find page %d of input file\n", image);
270 goto fail;
271 }
272 if (1 != TIFFGetField (in, TIFFTAG_IMAGELENGTH, & image_length))
273 {
274 fprintf (stderr, "can't get image length\n");
275 goto fail;
276 }
277 if (1 != TIFFGetField (in, TIFFTAG_IMAGEWIDTH, & image_width))
278 {
279 fprintf (stderr, "can't get image width\n");
280 goto fail;
281 }
283 if (1 != TIFFGetField (in, TIFFTAG_SAMPLESPERPIXEL, & samples_per_pixel))
284 {
285 fprintf (stderr, "can't get samples per pixel\n");
286 goto fail;
287 }
289 #ifdef CHECK_DEPTH
290 if (1 != TIFFGetField (in, TIFFTAG_IMAGEDEPTH, & image_depth))
291 {
292 fprintf (stderr, "can't get image depth\n");
293 goto fail;
294 }
295 #endif
297 if (1 != TIFFGetField (in, TIFFTAG_BITSPERSAMPLE, & bits_per_sample))
298 {
299 fprintf (stderr, "can't get bits per sample\n");
300 goto fail;
301 }
303 if (1 != TIFFGetField (in, TIFFTAG_PLANARCONFIG, & planar_config))
304 planar_config = 1;
306 if (1 != TIFFGetField (in, TIFFTAG_RESOLUTIONUNIT, & resolution_unit))
307 resolution_unit = 2;
308 if (1 != TIFFGetField (in, TIFFTAG_XRESOLUTION, & x_resolution))
309 x_resolution = 300;
310 if (1 != TIFFGetField (in, TIFFTAG_YRESOLUTION, & y_resolution))
311 y_resolution = 300;
313 if (samples_per_pixel != 1)
314 {
315 fprintf (stderr, "samples per pixel %u, must be 1\n", samples_per_pixel);
316 goto fail;
317 }
319 #ifdef CHECK_DEPTH
320 if (image_depth != 1)
321 {
322 fprintf (stderr, "image depth %u, must be 1\n", image_depth);
323 goto fail;
324 }
325 #endif
327 if (bits_per_sample != 1)
328 {
329 fprintf (stderr, "bits per sample %u, must be 1\n", bits_per_sample);
330 goto fail;
331 }
333 if (planar_config != 1)
334 {
335 fprintf (stderr, "planar config %u, must be 1\n", planar_config);
336 goto fail;
337 }
339 if (input_attributes.has_resolution)
340 {
341 x_resolution = input_attributes.x_resolution;
342 y_resolution = input_attributes.y_resolution;
343 }
345 if ((input_attributes.rotation == 90) || (input_attributes.rotation == 270))
346 {
347 dest_image_width = image_length;
348 dest_image_length = image_width;
349 dest_x_resolution = y_resolution;
350 dest_y_resolution = x_resolution;
351 SWAP (int, width_points, height_points);
352 }
353 else
354 {
355 dest_image_width = image_width;
356 dest_image_length = image_length;
357 dest_x_resolution = x_resolution;
358 dest_y_resolution = y_resolution;
359 }
361 scanline_size = TIFFScanlineSize (in);
363 rect.min.x = 0;
364 rect.min.y = 0;
365 rect.max.x = image_width;
366 rect.max.y = image_length;
368 bitmap = create_bitmap (& rect);
370 if (! bitmap)
371 {
372 fprintf (stderr, "can't allocate bitmap\n");
373 goto fail;
374 }
376 if (bitmap->rowbytes != scanline_size)
377 {
378 printf ("image_width %d\n", image_width);
379 printf ("rowbytes %d\n", bitmap->rowbytes);
380 printf ("TIFFScanlineSize %d\n", scanline_size);
381 }
383 for (row = 0; row < image_length; row++)
384 TIFFReadScanline (in,
385 bitmap->bits + row * bitmap->rowbytes,
386 row,
387 0);
389 for (row = 0; row < dest_image_length; row++)
390 if (1 != TIFFReadScanline (in,
391 bitmap->bits + row * bitmap->rowbytes,
392 row,
393 0))
394 {
395 fprintf (stderr, "can't read TIFF scanline\n");
396 goto fail;
397 }
399 bitmap = resize_bitmap (bitmap,
400 x_resolution,
401 y_resolution,
402 input_attributes);
404 rotate_bitmap (bitmap,
405 input_attributes);
407 tiff_temp_fd = mkstemp (tiff_temp_fn);
408 if (tiff_temp_fd < 0)
409 {
410 fprintf (stderr, "can't create temporary TIFF file\n");
411 goto fail;
412 }
414 tiff_temp = TIFFFdOpen (tiff_temp_fd, tiff_temp_fn, "w");
415 if (! out)
416 {
417 fprintf (stderr, "can't open temporary TIFF file '%s'\n", tiff_temp_fn);
418 goto fail;
419 }
421 TIFFSetField (tiff_temp, TIFFTAG_IMAGELENGTH, rect_height (& bitmap->rect));
422 TIFFSetField (tiff_temp, TIFFTAG_IMAGEWIDTH, rect_width (& bitmap->rect));
423 TIFFSetField (tiff_temp, TIFFTAG_PLANARCONFIG, planar_config);
425 TIFFSetField (tiff_temp, TIFFTAG_ROWSPERSTRIP, rect_height (& bitmap->rect));
427 TIFFSetField (tiff_temp, TIFFTAG_RESOLUTIONUNIT, resolution_unit);
428 TIFFSetField (tiff_temp, TIFFTAG_XRESOLUTION, dest_x_resolution);
429 TIFFSetField (tiff_temp, TIFFTAG_YRESOLUTION, dest_y_resolution);
431 TIFFSetField (tiff_temp, TIFFTAG_SAMPLESPERPIXEL, samples_per_pixel);
432 TIFFSetField (tiff_temp, TIFFTAG_BITSPERSAMPLE, bits_per_sample);
433 TIFFSetField (tiff_temp, TIFFTAG_COMPRESSION, COMPRESSION_CCITTFAX4);
434 TIFFSetField (tiff_temp, TIFFTAG_PHOTOMETRIC, PHOTOMETRIC_MINISWHITE);
436 for (row = 0; row < rect_height (& bitmap->rect); row++)
437 if (1 != TIFFWriteScanline (tiff_temp,
438 bitmap->bits + row * bitmap->rowbytes,
439 row,
440 0))
441 {
442 fprintf (stderr, "can't write TIFF scanline\n");
443 goto fail;
444 }
446 TIFFClose (tiff_temp);
448 width_points = (rect_width (& bitmap->rect) / dest_x_resolution) * POINTS_PER_INCH;
449 height_points = (rect_height (& bitmap->rect) / dest_y_resolution) * POINTS_PER_INCH;
451 free_bitmap (bitmap);
453 if ((height_points > PAGE_MAX_POINTS) || (width_points > PAGE_MAX_POINTS))
454 {
455 fprintf (stdout, "image too large (max %d inches on a side\n", PAGE_MAX_INCHES);
456 goto fail;
457 }
459 sprintf (pagesize, "[0 0 %d %d]", width_points, height_points);
461 page = panda_newpage (out->pdf, pagesize);
462 panda_imagebox (out->pdf,
463 page,
464 0, /* top */
465 0, /* left */
466 height_points, /* bottom */
467 width_points, /* right */
468 tiff_temp_fn,
469 panda_image_tiff);
471 result = 1;
473 fail:
474 if (tiff_temp_fd)
475 unlink (tiff_temp_fn);
476 return (result);
477 }
480 int main (int argc, char *argv[])
481 {
482 int result = 0;
484 panda_init ();
486 if (argc != 2)
487 {
488 fprintf (stderr, "usage: %s spec\n", argv [0]);
489 result = 1;
490 goto fail;
491 }
493 if (! parse_spec_file (argv [1]))
494 {
495 result = 2;
496 goto fail;
497 }
499 if (! process_specs ())
500 {
501 result = 3;
502 goto fail;
503 }
505 fail:
506 close_tiff_input_file ();
507 close_pdf_output_files ();
508 return (result);
509 }