/[public]/psiconv/trunk/lib/psiconv/parse_image.c
ViewVC logotype

Contents of /psiconv/trunk/lib/psiconv/parse_image.c

Parent Directory Parent Directory | Revision Log Revision Log


Revision 230 - (show annotations)
Wed Feb 25 20:56:43 2004 UTC (16 years, 9 months ago) by frodo
File MIME type: text/plain
File size: 34541 byte(s)
(Frodo) Modify debugging level

The noise from parsing pictures was ridiculous. Now you have to edit the C
code and #define LOUD to have it shout at you like that.

1 /*
2 parse_image.c - Part of psiconv, a PSION 5 file formats converter
3 Copyright (c) 1999-2004 Frodo Looijaard <frodol@dds.nl>
4
5 This program is free software; you can redistribute it and/or modify
6 it under the terms of the GNU General Public License as published by
7 the Free Software Foundation; either version 2 of the License, or
8 (at your option) any later version.
9
10 This program is distributed in the hope that it will be useful,
11 but WITHOUT ANY WARRANTY; without even the implied warranty of
12 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
13 GNU General Public License for more details.
14
15 You should have received a copy of the GNU General Public License
16 along with this program; if not, write to the Free Software
17 Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
18 */
19
20 #include "config.h"
21 #include "compat.h"
22
23 #include <stdlib.h>
24
25 #include "parse_routines.h"
26 #include "error.h"
27 #include "image.h"
28
29 #ifdef DMALLOC
30 #include <dmalloc.h>
31 #endif
32
33 /* Extreme debugging info */
34 #undef LOUD
35
36 static int psiconv_decode_rle8 (const psiconv_config config, int lev,
37 psiconv_u32 off,
38 const psiconv_pixel_bytes encoded,
39 psiconv_pixel_bytes *decoded);
40
41 static int psiconv_decode_rle12 (const psiconv_config config, int lev,
42 psiconv_u32 off,
43 const psiconv_pixel_bytes encoded,
44 psiconv_pixel_bytes *decoded);
45
46 static int psiconv_decode_rle16 (const psiconv_config config, int lev,
47 psiconv_u32 off,
48 const psiconv_pixel_bytes encoded,
49 psiconv_pixel_bytes *decoded);
50
51 static int psiconv_decode_rle24 (const psiconv_config config, int lev,
52 psiconv_u32 off,
53 const psiconv_pixel_bytes encoded,
54 psiconv_pixel_bytes *decoded);
55
56 static int psiconv_bytes_to_pixel_data(const psiconv_config config,
57 int lev, psiconv_u32 off,
58 const psiconv_pixel_bytes bytes,
59 psiconv_pixel_ints *pixels,
60 int colordepth, int xsize, int ysize);
61
62 static int psiconv_pixel_data_to_floats (const psiconv_config config, int lev,
63 psiconv_u32 off,
64 const psiconv_pixel_ints pixels,
65 psiconv_pixel_floats_t *floats,
66 int colordepth, int color,
67 int redbits, int bluebits, int greenbits,
68 const psiconv_pixel_floats_t palet);
69
70
71
72 int psiconv_parse_jumptable_section(const psiconv_config config,
73 const psiconv_buffer buf,int lev,
74 psiconv_u32 off, int *length,
75 psiconv_jumptable_section *result)
76 {
77 int res = 0;
78 int len = 0;
79 psiconv_u32 listlen,temp;
80 int i;
81
82 psiconv_progress(config,lev+1,off+len,"Going to read the jumptable section");
83 if (!((*result) = psiconv_list_new(sizeof(psiconv_u32))))
84 goto ERROR1;
85
86 psiconv_progress(config,lev+2,off+len,"Going to read the list length");
87 listlen = psiconv_read_u32(config,buf,lev+2,off+len,&res);
88 if (res)
89 goto ERROR2;
90 psiconv_debug(config,lev+2,off+len,"List length: %08x",listlen);
91 len += 4;
92
93 psiconv_progress(config,lev+2,off+len,"Going to read the list");
94 for (i = 0; i < listlen; i++) {
95 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
96 if (res)
97 goto ERROR2;
98 if ((res = psiconv_list_add(*result,&temp)))
99 goto ERROR2;
100 psiconv_debug(config,lev+3,off+len,"Offset: %08x",temp);
101 len += 4;
102 }
103
104 if (length)
105 *length = len;
106
107 psiconv_progress(config,lev+1,off+len-1,"End of jumptable section "
108 "(total length: %08x)", len);
109
110 return 0;
111
112 ERROR2:
113 psiconv_list_free(*result);
114 ERROR1:
115 psiconv_error(config,lev+1,off,"Reading of Jumptable Section failed");
116 if (length)
117 *length = 0;
118 if (!res)
119 return -PSICONV_E_NOMEM;
120 else
121 return res;
122 }
123
124 int psiconv_parse_paint_data_section(const psiconv_config config,
125 const psiconv_buffer buf,int lev,
126 psiconv_u32 off, int *length,int isclipart,
127 psiconv_paint_data_section *result)
128 {
129 int res = 0;
130 int len = 0;
131 psiconv_u32 size,offset,picsize,temp,datasize,color,
132 redbits,bluebits,greenbits;
133 psiconv_u8 byte;
134 int leng,i;
135 psiconv_u32 bits_per_pixel,compression;
136 psiconv_pixel_bytes bytes,decoded;
137 psiconv_pixel_ints pixels;
138 psiconv_pixel_floats_t floats,palet;
139
140 psiconv_progress(config,lev+1,off,"Going to read a paint data section");
141 if (!((*result) = malloc(sizeof(**result))))
142 goto ERROR1;
143
144 if (!(bytes = psiconv_list_new(sizeof(psiconv_u8))))
145 goto ERROR2;
146
147 psiconv_progress(config,lev+2,off+len,"Going to read section size");
148 size = psiconv_read_u32(config,buf,lev+2,off+len,&res);
149 if (res)
150 goto ERROR3;
151 psiconv_debug(config,lev+2,off+len,"Section size: %08x",size);
152 len += 4;
153
154 psiconv_progress(config,lev+2,off+len,"Going to read pixel data offset");
155 offset = psiconv_read_u32(config,buf,lev+2,off+len,&res);
156 if (res)
157 goto ERROR3;
158 if (offset != 0x28) {
159 psiconv_error(config,lev+2,off+len,
160 "Paint data section data offset has unexpected value");
161 psiconv_debug(config,lev+2,off+len,
162 "Data offset: read %08x, expected %08x",offset,0x28);
163 res = -1;
164 }
165 len += 4;
166
167 psiconv_progress(config,lev+2,off+len,"Going to read picture X size");
168 (*result)->xsize = psiconv_read_u32(config,buf,lev+2,off+len,&res);
169 if (res)
170 goto ERROR3;
171 psiconv_debug(config,lev+2,off+len,"Picture X size: %08x:",(*result)->xsize);
172 len += 4;
173
174 psiconv_progress(config,lev+2,off+len,"Going to read picture Y size");
175 (*result)->ysize = psiconv_read_u32(config,buf,lev+2,off+len,&res);
176 if (res)
177 goto ERROR3;
178 psiconv_debug(config,lev+2,off+len,"Picture Y size: %08x:",(*result)->ysize);
179 len += 4;
180
181 picsize = (*result)->ysize * (*result)->xsize;
182
183 psiconv_progress(config,lev+2,off+len,"Going to read the real picture x size");
184 (*result)->pic_xsize = psiconv_read_length(config,buf,lev+2,off+len,&leng,&res);
185 if (res)
186 goto ERROR3;
187 psiconv_debug(config,lev+2,off+len,"Picture x size: %f",(*result)->pic_xsize);
188 len += leng;
189
190 psiconv_progress(config,lev+2,off+len,"Going to read the real picture y size");
191 (*result)->pic_ysize = psiconv_read_length(config,buf,lev+2,off+len,&leng,&res);
192 if (res)
193 goto ERROR3;
194 psiconv_debug(config,lev+2,off+len,"Picture y size: %f",(*result)->pic_ysize);
195 len += leng;
196
197 psiconv_progress(config,lev+2,off+len,"Going to read the number of bits per pixel");
198 bits_per_pixel=psiconv_read_u32(config,buf,lev+2,off+len,&res);
199 if (res)
200 goto ERROR3;
201 psiconv_debug(config,lev+2,off+len,"Bits per pixel: %d",bits_per_pixel);
202 len += 4;
203
204 psiconv_progress(config,lev+2,off+len,
205 "Going to read whether this is a colour or greyscale picture");
206 color = psiconv_read_u32(config,buf,lev+2,off+len,&res);
207 if (res)
208 goto ERROR3;
209 if ((color != 0) && (color != 1)) {
210 psiconv_warn(config,lev+2,off+len,
211 "Paint data section unknown color type (ignored)");
212 psiconv_debug(config,lev+2,off+len,
213 "Color: read %08x, expected %08x or %08x",color,0,1);
214 color = 1;
215 } else {
216 psiconv_debug(config,lev+2,off+len,"Color: %08x (%s picture)",
217 color,(color?"color":"greyscale"));
218 }
219 len += 4;
220
221 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
222 if (res)
223 goto ERROR3;
224 if (temp != 00) {
225 psiconv_warn(config,lev+2,off+len,
226 "Paint data section prologue has unknown values (ignored)");
227 psiconv_debug(config,lev+2,off+len,
228 "read %08x, expected %08x",temp, 0x00);
229 }
230 len += 4;
231
232 psiconv_progress(config,lev+2,off+len,
233 "Going to read whether RLE compression is used");
234 compression=psiconv_read_u32(config,buf,lev+2,off+len,&res);
235 if (res)
236 goto ERROR3;
237 if (compression > 4) {
238 psiconv_warn(config,lev+2,off+len,"Paint data section has unknown "
239 "compression type, assuming RLE");
240 psiconv_debug(config,lev+2,off+len,"Read compression type %d",compression);
241 compression = 0;
242 }
243 psiconv_debug(config,lev+2,off+len,"Compression: %s",
244 compression == 4?"RLE24":compression == 3?"RLE16":
245 compression == 2?"RLE12":compression == 1?"RLE8":"none");
246 len += 4;
247
248 if (isclipart) {
249 psiconv_progress(config,lev+2,off+len,"Going to read an unknown long");
250 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
251 if (res)
252 goto ERROR3;
253 if (temp != 0xffffffff) {
254 psiconv_warn(config,lev+2,off+len,
255 "Paint data section prologue has unknown values (ignoring)");
256 psiconv_debug(config,lev+2,off+len,
257 "Read %08x, expected %08x",temp, 0xffffffff);
258 }
259 len += 4;
260 psiconv_progress(config,lev+2,off+len,"Going to read a second unknown long");
261 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
262 if (res)
263 goto ERROR3;
264 if (temp != 0x44) {
265 psiconv_warn(config,lev+2,off+len,
266 "Paint data section prologue has unknown values (ignoring)");
267 psiconv_debug(config,lev+2,off+len,
268 "read %08x, expected %08x",temp, 0x44);
269 }
270 len += 4;
271 }
272
273 len = offset;
274 datasize = size - len;
275 if (isclipart)
276 len += 8;
277
278 if (color || (bits_per_pixel != 2))
279 psiconv_warn(config,lev+2,off+len,
280 "All image types except 2-bit greyscale are experimental!");
281
282 psiconv_progress(config,lev+2,off+len,"Going to read the pixel data");
283 for (i = 0; i < datasize; i++) {
284 byte = psiconv_read_u8(config,buf,lev+2,off+len+i,&res);
285 #ifdef LOUD
286 psiconv_debug(config,lev+2,off+len+i,
287 "Pixel byte %04x of %04x has value %02x",
288 i,datasize,byte);
289 #endif
290 if (res)
291 goto ERROR3;
292 psiconv_list_add(bytes,&byte);
293 }
294 len += datasize;
295
296 switch(compression) {
297 case 1:
298 if ((res = psiconv_decode_rle8(config,lev+2,off+len,bytes,&decoded)))
299 goto ERROR3;
300 psiconv_list_free(bytes);
301 bytes = decoded;
302 break;
303 case 2:
304 if ((psiconv_decode_rle12(config,lev+2,off+len,bytes,&decoded)))
305 goto ERROR3;
306 psiconv_list_free(bytes);
307 bytes = decoded;
308 break;
309 case 3:
310 if ((psiconv_decode_rle16(config,lev+2,off+len,bytes,&decoded)))
311 goto ERROR3;
312 psiconv_list_free(bytes);
313 bytes = decoded;
314 break;
315 case 4:
316 if ((psiconv_decode_rle24(config,lev+2,off+len,bytes,&decoded)))
317 goto ERROR3;
318 psiconv_list_free(bytes);
319 bytes = decoded;
320 break;
321 }
322
323 if ((res = psiconv_bytes_to_pixel_data(config,lev+2,off+len,bytes,
324 &pixels,bits_per_pixel,
325 (*result)->xsize,(*result)->ysize)))
326 goto ERROR3;
327
328 /* Use some heuristics; things may get unexpected around here */
329 bluebits = redbits = greenbits = 0;
330 palet = psiconv_palet_none;
331 if (color) {
332 if (bits_per_pixel == 4)
333 palet = psiconv_palet_color_4;
334 else if (bits_per_pixel == 8)
335 palet = psiconv_palet_color_8;
336 else {
337 redbits = (bits_per_pixel+2) / 3;
338 greenbits = (bits_per_pixel+2) / 3;
339 bluebits = bits_per_pixel - redbits - greenbits;
340 }
341 }
342 if ((res = psiconv_pixel_data_to_floats(config,lev+2,off+len,pixels,
343 &floats,bits_per_pixel,color,
344 redbits,greenbits,bluebits,palet)))
345 goto ERROR4;
346
347 (*result)->red = floats.red;
348 (*result)->green = floats.green;
349 (*result)->blue = floats.blue;
350
351 psiconv_list_free(bytes);
352 psiconv_list_free(pixels);
353
354
355 if (length)
356 *length = len;
357
358 psiconv_progress(config,lev,off+len-1,
359 "End of Paint Data Section (total length: %08x)", len);
360
361 return 0;
362
363 ERROR4:
364 psiconv_list_free(pixels);
365 ERROR3:
366 psiconv_list_free(bytes);
367 ERROR2:
368 free(*result);
369 ERROR1:
370 psiconv_error(config,lev+1,off,"Reading of Paint Data Section failed");
371 if (length)
372 *length = 0;
373 if (!res)
374 return -PSICONV_E_NOMEM;
375 else
376 return res;
377 }
378
379 int psiconv_parse_sketch_section(const psiconv_config config,
380 const psiconv_buffer buf, int lev,
381 psiconv_u32 off, int *length,
382 psiconv_sketch_section *result)
383 {
384 int res=0;
385 int len=0;
386 psiconv_u32 temp;
387 int leng;
388
389 psiconv_progress(config,lev+1,off,"Going to read the sketch section");
390 if (!(*result = malloc(sizeof(**result))))
391 goto ERROR1;
392
393 psiconv_progress(config,lev+2,off+len,"Going to read the displayed hor. size");
394 (*result)->displayed_xsize = psiconv_read_u16(config,buf,lev+2,off + len,&res);
395 if (res)
396 goto ERROR2;
397 psiconv_debug(config,lev+2,off+len,"Displayed hor. size: %04x",
398 (*result)->displayed_xsize);
399 len += 0x02;
400 psiconv_progress(config,lev+2,off+len,"Going to read displayed ver. size");
401 (*result)->displayed_ysize = psiconv_read_u16(config,buf,lev+2,off + len,&res);
402 if (res)
403 goto ERROR2;
404 psiconv_debug(config,lev+2,off+len,"Displayed ver. size: %04x",
405 (*result)->displayed_ysize);
406 len += 0x02;
407
408 psiconv_progress(config,lev+2,off+len,"Going to read the data hor. offset");
409 (*result)->picture_data_x_offset = psiconv_read_u16(config,buf,lev+2,off + len,
410 &res);
411 if (res)
412 goto ERROR2;
413 psiconv_debug(config,lev+2,off+len,"Data hor. offset: %04x",
414 (*result)->picture_data_x_offset);
415 len += 0x02;
416 psiconv_progress(config,lev+2,off+len,"Going to read the data ver. offset");
417 (*result)->picture_data_y_offset = psiconv_read_u16(config,buf,lev+2,off + len,
418 &res);
419 if (res)
420 goto ERROR2;
421 psiconv_debug(config,lev+2,off+len,"Data ver. offset: %04x",
422 (*result)->picture_data_y_offset);
423 len += 0x02;
424
425 psiconv_progress(config,lev+2,off+len,"Going to read the displayed hor. offset");
426 (*result)->displayed_size_x_offset = psiconv_read_u16(config,buf,lev+2,off + len,
427 &res);
428 if (res)
429 goto ERROR2;
430 psiconv_debug(config,lev+2,off+len,"Displayed hor. offset: %04x",
431 (*result)->displayed_size_x_offset);
432 len += 0x02;
433 psiconv_progress(config,lev+2,off+len,"Going to read the displayed ver. offset");
434 (*result)->displayed_size_y_offset = psiconv_read_u16(config,buf,lev+2,off + len,
435 &res);
436 if (res)
437 goto ERROR2;
438 psiconv_debug(config,lev+2,off+len,"Displayed ver. offset: %04x",
439 (*result)->displayed_size_y_offset);
440 len += 0x02;
441
442 psiconv_progress(config,lev+2,off+len,"Going to read the form hor. size");
443 (*result)->form_xsize = psiconv_read_u16(config,buf,lev+2,off + len,&res);
444 if (res)
445 goto ERROR2;
446 psiconv_debug(config,lev+2,off+len,"Form hor. size: %04x",
447 (*result)->form_xsize);
448 len += 0x02;
449 psiconv_progress(config,lev+2,off+len,"Going to read form ver. size");
450 (*result)->form_ysize = psiconv_read_u16(config,buf,lev+2,off + len,&res);
451 if (res)
452 goto ERROR2;
453 psiconv_debug(config,lev+2,off+len,"Form ver. size: %04x",
454 (*result)->form_ysize);
455 len += 0x02;
456
457 psiconv_progress(config,lev+2,off+len,"Going to skip 1 word of zeros");
458 temp = psiconv_read_u16(config,buf,lev+2,off+len,&res);
459 if (res)
460 goto ERROR2;
461 if (temp != 0) {
462 psiconv_warn(config,lev+2,off+len,
463 "Unexpected value in sketch section preamble (ignored)");
464 psiconv_debug(config,lev+2,off+len,"Read %04x, expected %04x",
465 temp,0);
466 }
467 off += 0x02;
468
469 psiconv_progress(config,lev+2,off+len,"Going to read the picture data");
470 if ((res = psiconv_parse_paint_data_section(config,buf,lev+2,off+len,&leng,0,
471 &((*result)->picture))))
472 goto ERROR2;
473 off += leng;
474
475 psiconv_progress(config,lev+2,off+len,"Going to read the hor. magnification");
476 (*result)->magnification_x = psiconv_read_u16(config,buf,lev+2,off+len,&res)/1000.0;
477 if (res)
478 goto ERROR3;
479 psiconv_debug(config,lev+2,off+len,"Form hor. magnification: %f",
480 (*result)->magnification_x);
481 len += 0x02;
482 psiconv_progress(config,lev+2,off+len,"Going to read the ver. magnification");
483 (*result)->magnification_y = psiconv_read_u16(config,buf,lev+2,off+len,&res)/1000.0;
484 if (res)
485 goto ERROR3;
486 psiconv_debug(config,lev+2,off+len,"Form ver. magnification: %f",
487 (*result)->magnification_y);
488 len += 0x02;
489
490 psiconv_progress(config,lev+2,off+len,"Going to read the left cut");
491 temp = psiconv_read_u32(config,buf,lev+2,off + len,&res);
492 if (res)
493 goto ERROR3;
494 (*result)->cut_left = (temp * 6.0) / (*result)->displayed_xsize;
495 psiconv_debug(config,lev+2,off+len,"Left cut: raw %08x, real: %f",
496 temp,(*result)->cut_left);
497 len += 0x04;
498 psiconv_progress(config,lev+2,off+len,"Going to read the right cut");
499 temp = psiconv_read_u32(config,buf,lev+2,off + len,&res);
500 if (res)
501 goto ERROR3;
502 (*result)->cut_right = (temp * 6.0) / (*result)->displayed_xsize;
503 psiconv_debug(config,lev+2,off+len,"Right cut: raw %08x, real: %f",
504 temp,(*result)->cut_right);
505 len += 0x04;
506 psiconv_progress(config,lev+2,off+len,"Going to read the top cut");
507 temp = psiconv_read_u32(config,buf,lev+2,off + len,&res);
508 if (res)
509 goto ERROR3;
510 (*result)->cut_top = (temp * 6.0) / (*result)->displayed_ysize;
511 psiconv_debug(config,lev+2,off+len,"Top cut: raw %08x, real: %f",
512 temp,(*result)->cut_top);
513 len += 0x04;
514 psiconv_progress(config,lev+2,off+len,"Going to read the bottom cut");
515 temp = psiconv_read_u32(config,buf,lev+2,off + len,&res);
516 if (res)
517 goto ERROR3;
518 (*result)->cut_bottom = (temp * 6.0) / (*result)->displayed_ysize;
519 psiconv_debug(config,lev+2,off+len,"Bottom cut: raw %08x, real: %f",
520 temp,(*result)->cut_bottom);
521 len += 0x04;
522
523 if (length)
524 *length = len;
525
526 psiconv_progress(config,lev,off+len-1,
527 "End of sketch section (total length: %08x)", len);
528
529 return res;
530 ERROR3:
531 psiconv_free_paint_data_section((*result)->picture);
532 ERROR2:
533 free (*result);
534 ERROR1:
535 psiconv_error(config,lev+1,off,"Reading of Sketch Section failed");
536 if (length)
537 *length = 0;
538 if (!res)
539 return -PSICONV_E_NOMEM;
540 else
541 return res;
542 }
543
544
545 int psiconv_parse_clipart_section(const psiconv_config config,
546 const psiconv_buffer buf,int lev,
547 psiconv_u32 off, int *length,
548 psiconv_clipart_section *result)
549 {
550 int res=0;
551 int len=0;
552 int leng;
553 psiconv_u32 temp;
554
555 psiconv_progress(config,lev+1,off+len,"Going to read the clipart section");
556 if (!(*result = malloc(sizeof(**result))))
557 goto ERROR1;
558
559 psiconv_progress(config,lev+2,off+len,"Going to read the section ID");
560 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
561 if (res)
562 goto ERROR2;
563 if (temp != PSICONV_ID_CLIPART_ITEM) {
564 psiconv_warn(config,lev+2,off+len,
565 "Unexpected value in clipart section preamble (ignored)");
566 psiconv_debug(config,lev+2,off+len,"Read %08x, expected %08x",temp,
567 PSICONV_ID_CLIPART_ITEM);
568 } else
569 psiconv_debug(config,lev+2,off+len,"Clipart ID: %08x", temp);
570 off += 4;
571
572 psiconv_progress(config,lev+2,off+len,"Going to read an unknown long");
573 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
574 if (res)
575 goto ERROR2;
576 if (temp != 0x02) {
577 psiconv_warn(config,lev+2,off+len,
578 "Unexpected value in clipart section preamble (ignored)");
579 psiconv_debug(config,lev+2,off+len,"Read %08x, expected %08x",temp,
580 0x02);
581 } else
582 psiconv_debug(config,lev+2,off+len,"First unknown long: %08x", temp);
583 off += 4;
584
585 psiconv_progress(config,lev+2,off+len,"Going to read a second unknown long");
586 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
587 if (res)
588 goto ERROR2;
589 if (temp != 0) {
590 psiconv_warn(config,lev+2,off+len,
591 "Unexpected value in clipart section preamble (ignored)");
592 psiconv_debug(config,lev+2,off+len,"Read %08x, expected %08x",temp, 0);
593 } else
594 psiconv_debug(config,lev+2,off+len,"Second unknown long: %08x", temp);
595 off += 4;
596
597 psiconv_progress(config,lev+2,off+len,"Going to read a third unknown long");
598 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
599 if (res)
600 goto ERROR2;
601 if (temp != 0) {
602 psiconv_warn(config,lev+2,off+len,
603 "Unexpected value in clipart section preamble (ignored)");
604 psiconv_debug(config,lev+2,off+len,"Read %08x, expected %08x",temp, 0);
605 } else
606 psiconv_debug(config,lev+2,off+len,"Third unknown long: %08x", temp);
607 off += 4;
608
609 psiconv_progress(config,lev+2,off+len,"Going to read a fourth unknown long");
610 temp = psiconv_read_u32(config,buf,lev+2,off+len,&res);
611 if (res)
612 goto ERROR2;
613 if ((temp != 0x0c) && (temp != 0x08)) {
614 psiconv_warn(config,lev+2,off+len,
615 "Unexpected value in clipart section preamble (ignored)");
616 psiconv_debug(config,lev+2,off+len,"Read %08x, expected %08x or %08x",temp,
617 0x0c, 0x08);
618 } else
619 psiconv_debug(config,lev+2,off+len,"Fourth unknown long: %08x", temp);
620 off += 4;
621
622 psiconv_progress(config,lev+2,off+len,"Going to read the Paint Data Section");
623 if ((res = psiconv_parse_paint_data_section(config,buf,lev+2,off+len,&leng,1,
624 &((*result)->picture))))
625 goto ERROR2;
626 len += leng;
627
628 if (length)
629 *length = len;
630
631 psiconv_progress(config,lev,off+len-1,
632 "End of clipart section (total length: %08x)", len);
633 return 0;
634
635 ERROR2:
636 free (*result);
637 ERROR1:
638 psiconv_error(config,lev+1,off,"Reading of Font failed");
639 if (length)
640 *length = 0;
641 if (!res)
642 return -PSICONV_E_NOMEM;
643 else
644 return res;
645 }
646
647 int psiconv_decode_rle8 (const psiconv_config config, int lev, psiconv_u32 off,
648 const psiconv_pixel_bytes encoded,
649 psiconv_pixel_bytes *decoded)
650 {
651 int res=0;
652 psiconv_u8 *marker,*value;
653 int i,j;
654
655 psiconv_progress(config,lev+1,off,"Going to decode the RLE8 encoding");
656 if (!(*decoded = psiconv_list_new(sizeof(psiconv_u8))))
657 goto ERROR1;
658
659 for (i = 0; i < psiconv_list_length(encoded);) {
660 #ifdef LOUD
661 psiconv_progress(config,lev+2,off,"Going to read marker byte at %04x",i);
662 #endif
663 if (!(marker = psiconv_list_get(encoded,i)))
664 goto ERROR2;
665 #ifdef LOUD
666 psiconv_debug(config,lev+2,off,"Marker byte: %02x",*marker);
667 #endif
668 if (*marker < 0x80) {
669 #ifdef LOUD
670 psiconv_debug(config,lev+2,off,"Marker: repeat value byte %02x times",
671 *marker+1); */
672 psiconv_progress(config,lev+2,off,"Going to read value byte at %04x",i+1);
673 #endif
674 if (!(value = psiconv_list_get(encoded,i+1)))
675 goto ERROR2;
676 #ifdef LOUD
677 psiconv_debug(config,lev+2,off,"Value byte: %02x",*value);
678 psiconv_progress(config,lev+2,off,"Adding %02x pixels %02x",
679 *marker+1,*value);
680 #endif
681 for (j = 0; j < *marker + 1; j++)
682 if ((res = psiconv_list_add(*decoded,value)))
683 goto ERROR2;
684 i += 2;
685 } else {
686 #ifdef LOUD
687 psiconv_debug(config,lev+2,off,"Marker: %02x value bytes follow",
688 0x100 - *marker);
689 #endif
690 for (j = 0; j < (0x100 - *marker); j++) {
691 #ifdef LOUD
692 psiconv_progress(config,lev+2,off,"Going to read value byte at %04x",
693 i+j+1);
694 #endif
695 if (!(value = psiconv_list_get(encoded,i+j+1)))
696 goto ERROR2;
697 #ifdef LOUD
698 psiconv_debug(config,lev+2,off,"Value: %02x",*value);
699 #endif
700 if ((res = psiconv_list_add(*decoded,value)))
701 goto ERROR2;
702 }
703 i += (0x100 - *marker) + 1;
704 }
705 }
706 psiconv_progress(config,lev,off,
707 "End of RLE8 decoding process");
708 return 0;
709
710 ERROR2:
711 psiconv_list_free(*decoded);
712 ERROR1:
713 psiconv_error(config,lev+1,off,"Decoding of RLE8 failed");
714 if (!res)
715 return -PSICONV_E_NOMEM;
716 else
717 return res;
718 }
719
720 int psiconv_decode_rle12 (const psiconv_config config, int lev, psiconv_u32 off,
721 const psiconv_pixel_bytes encoded,
722 psiconv_pixel_bytes *decoded)
723 {
724 int res=0;
725 psiconv_u8 *value0,*value1;
726 psiconv_u32 value,repeat;
727 int i,j;
728
729 psiconv_progress(config,lev+1,off,"Going to decode the RLE12 encoding");
730 if (!(*decoded = psiconv_list_new(sizeof(psiconv_u8))))
731 goto ERROR1;
732
733 for (i = 0; i < psiconv_list_length(encoded);) {
734 psiconv_progress(config,lev+2,off,"Going to read data word at %04x",i);
735 if (!(value0 = psiconv_list_get(encoded,i)))
736 goto ERROR2;
737 if (!(value1 = psiconv_list_get(encoded,i+1)))
738 goto ERROR2;
739 psiconv_debug(config,lev+2,off,"Data Word: %04x",*value0 + (*value1 << 8));
740 value = *value0 + ((*value1 & 0x0f) << 8);
741 repeat = (*value1 >> 4) + 1;
742 psiconv_progress(config,lev+2,off,"Adding %02x pixels %03x",
743 repeat,value);
744 for (j = 0; j < repeat; j ++)
745 if ((res = psiconv_list_add(*decoded,&value)))
746 goto ERROR2;
747 i += 2;
748 }
749 psiconv_progress(config,lev,off,
750 "End of RLE12 decoding process");
751 return 0;
752
753 ERROR2:
754 psiconv_list_free(*decoded);
755 ERROR1:
756 psiconv_error(config,lev+1,off,"Decoding of RLE12 failed");
757 if (!res)
758 return -PSICONV_E_NOMEM;
759 else
760 return res;
761 }
762
763 int psiconv_decode_rle16 (const psiconv_config config, int lev, psiconv_u32 off,
764 const psiconv_pixel_bytes encoded,
765 psiconv_pixel_bytes *decoded)
766 {
767 int res=0;
768 psiconv_u8 *marker,*value0,*value1;
769 psiconv_u32 value;
770 int i,j;
771
772 psiconv_progress(config,lev+1,off,"Going to decode the RLE16 encoding");
773 if (!(*decoded = psiconv_list_new(sizeof(psiconv_u8))))
774 goto ERROR1;
775
776 for (i = 0; i < psiconv_list_length(encoded);) {
777 psiconv_progress(config,lev+2,off,"Going to read marker byte at %04x",i);
778 if (!(marker = psiconv_list_get(encoded,i)))
779 goto ERROR2;
780 psiconv_debug(config,lev+2,off,"Marker byte: %02x",*marker);
781 if (*marker < 0x80) {
782 psiconv_debug(config,lev+2,off,"Marker: repeat value word %02x times",
783 *marker+1);
784 psiconv_progress(config,lev+2,off,"Going to read value word at %04x",i+1);
785 if (!(value0 = psiconv_list_get(encoded,i+1)))
786 goto ERROR2;
787 if (!(value1 = psiconv_list_get(encoded,i+2)))
788 goto ERROR2;
789 value = *value0 + (*value1 << 8);
790 psiconv_debug(config,lev+2,off,"Value word: %02x",value);
791 psiconv_progress(config,lev+2,off,"Adding %02x pixels %04x",
792 *marker+1,value);
793 for (j = 0; j < *marker + 1; j++)
794 if ((res = psiconv_list_add(*decoded,&value)))
795 goto ERROR2;
796 i += 3;
797 } else {
798 psiconv_debug(config,lev+2,off,"Marker: %02x value words follow",
799 0x100 - *marker);
800 for (j = 0; j < (0x100 - *marker); j++) {
801 psiconv_progress(config,lev+2,off,"Going to read value word at %04x",
802 i+j*2+1);
803 if (!(value0 = psiconv_list_get(encoded,i+j*2+1)))
804 goto ERROR2;
805 if (!(value1 = psiconv_list_get(encoded,i+j*2+2)))
806 goto ERROR2;
807 value = *value0 + (*value1 << 8);
808 psiconv_debug(config,lev+2,off,"Value: %04x",value);
809 if ((res = psiconv_list_add(*decoded,&value)))
810 goto ERROR2;
811 }
812 i += (0x100 - *marker)*2 + 1;
813 }
814 }
815 psiconv_progress(config,lev,off,
816 "End of RLE16 decoding process");
817 return 0;
818
819 ERROR2:
820 psiconv_list_free(*decoded);
821 ERROR1:
822 psiconv_error(config,lev+1,off,"Decoding of RLE16 failed");
823 if (!res)
824 return -PSICONV_E_NOMEM;
825 else
826 return res;
827 }
828
829 int psiconv_decode_rle24 (const psiconv_config config, int lev, psiconv_u32 off,
830 const psiconv_pixel_bytes encoded,
831 psiconv_pixel_bytes *decoded)
832 {
833 int res=0;
834 psiconv_u8 *marker,*value0,*value1,*value2;
835 psiconv_u32 value;
836 int i,j;
837
838 psiconv_progress(config,lev+1,off,"Going to decode the RLE24 encoding");
839 if (!(*decoded = psiconv_list_new(sizeof(psiconv_u8))))
840 goto ERROR1;
841
842 for (i = 0; i < psiconv_list_length(encoded);) {
843 psiconv_progress(config,lev+2,off,"Going to read marker byte at %04x",i);
844 if (!(marker = psiconv_list_get(encoded,i)))
845 goto ERROR2;
846 psiconv_debug(config,lev+2,off,"Marker byte: %02x",*marker);
847 if (*marker < 0x80) {
848 psiconv_debug(config,lev+2,off,"Marker: repeat value byte triplet %02x times",
849 *marker+1);
850 psiconv_progress(config,lev+2,off,"Going to read value byte triplet at %04x",i+1);
851 if (!(value0 = psiconv_list_get(encoded,i+1)))
852 goto ERROR2;
853 if (!(value1 = psiconv_list_get(encoded,i+2)))
854 goto ERROR2;
855 if (!(value2 = psiconv_list_get(encoded,i+3)))
856 goto ERROR2;
857 value = *value0 + (*value1 << 8) + (*value2 << 16);
858 psiconv_debug(config,lev+2,off,"Value byte triplet: %06x",value);
859 psiconv_progress(config,lev+2,off,"Adding %02x pixels %06x",
860 *marker+1,value);
861 for (j = 0; j < *marker + 1; j++)
862 if ((res = psiconv_list_add(*decoded,&value)))
863 goto ERROR2;
864 i += 4;
865 } else {
866 psiconv_debug(config,lev+2,off,"Marker: %02x value byte triplets follow",
867 0x100 - *marker);
868 for (j = 0; j < (0x100 - *marker); j++) {
869 psiconv_progress(config,lev+2,off,"Going to read value byte triplets at %04x",
870 i+j*3+1);
871 if (!(value0 = psiconv_list_get(encoded,i+j*3+1)))
872 goto ERROR2;
873 if (!(value1 = psiconv_list_get(encoded,i+j*3+2)))
874 goto ERROR2;
875 if (!(value2 = psiconv_list_get(encoded,i+j*3+3)))
876 goto ERROR2;
877 value = *value0 + (*value1 << 8) + (*value2 << 16);
878 psiconv_debug(config,lev+2,off,"Value: %06x",value);
879 if ((res = psiconv_list_add(*decoded,&value)))
880 goto ERROR2;
881 }
882 i += (0x100 - *marker)*3 + 1;
883 }
884 }
885 psiconv_progress(config,lev,off,
886 "End of RLE24 decoding process");
887 return 0;
888
889 ERROR2:
890 psiconv_list_free(*decoded);
891 ERROR1:
892 psiconv_error(config,lev+1,off,"Decoding of RLE24 failed");
893 if (!res)
894 return -PSICONV_E_NOMEM;
895 else
896 return res;
897 }
898
899 int psiconv_bytes_to_pixel_data(const psiconv_config config,
900 int lev, psiconv_u32 off,
901 const psiconv_pixel_bytes bytes,
902 psiconv_pixel_ints *pixels,
903 int colordepth, int xsize, int ysize)
904 {
905 int res=0;
906 int ibits,obits,x,y,bits;
907 psiconv_u8 input;
908 psiconv_u32 nr,output;
909 psiconv_u8 *ientry;
910
911 psiconv_progress(config,lev+1,off,"Going to convert the bytes to pixels");
912 if (!(*pixels = psiconv_list_new(sizeof(psiconv_u32))))
913 goto ERROR1;
914
915 nr = 0;
916 for (y = 0; y < ysize; y++) {
917 /* New lines will start at longs */
918 while (nr % 4)
919 nr ++;
920 input = 0;
921 ibits = 0;
922 for (x= 0; x < xsize; x++) {
923 #ifdef LOUD
924 psiconv_progress(config,lev+2,off,
925 "Processing pixel at (x,y) = (%04x,%04x)",x,y);
926 #endif
927 output = 0;
928 obits = 0;
929 while (obits < colordepth) {
930 if (ibits == 0) {
931 #ifdef LOUD
932 psiconv_progress(config,lev+3,off,
933 "Going to read byte %08x",nr);
934 #endif
935 if (!(ientry = psiconv_list_get(bytes,nr)))
936 goto ERROR2;
937 #ifdef LOUD
938 psiconv_debug(config,lev+3,off,"Byte value: %02x",*ientry);
939 #endif
940 input = *ientry;
941 ibits = 8;
942 nr ++;
943 }
944 bits = ibits + obits > colordepth?colordepth-obits:ibits;
945 output = output << bits;
946 output |= input & ((1 << bits) - 1);
947 input = input >> bits;
948 ibits -= bits;
949 obits += bits;
950 }
951 #ifdef LOUD
952 psiconv_debug(config,lev+2,off,"Pixel value: %08x",output);
953 #endif
954 if ((res = psiconv_list_add(*pixels,&output)))
955 goto ERROR2;
956 }
957 }
958
959 psiconv_progress(config,lev,off,
960 "Converting bytes to pixels completed");
961 return 0;
962
963
964 ERROR2:
965 psiconv_list_free(*pixels);
966 ERROR1:
967 psiconv_error(config,lev+1,off,"Converting bytes to pixels failed");
968 if (!res)
969 return -PSICONV_E_NOMEM;
970 else
971 return res;
972 }
973
974 int psiconv_pixel_data_to_floats (const psiconv_config config, int lev,
975 psiconv_u32 off,
976 const psiconv_pixel_ints pixels,
977 psiconv_pixel_floats_t *floats,
978 int colordepth, int color,
979 int redbits, int bluebits, int greenbits,
980 const psiconv_pixel_floats_t palet)
981 {
982 int res = 0;
983 psiconv_u32 i;
984 psiconv_u32 *pixel;
985
986 psiconv_progress(config,lev+1,off,"Going to convert pixels to floats");
987 if (!((*floats).red = malloc(psiconv_list_length(pixels) *
988 sizeof(*(*floats).red))))
989 goto ERROR1;
990 if (!((*floats).green = malloc(psiconv_list_length(pixels) *
991 sizeof(*(*floats).green))))
992 goto ERROR2;
993 if (!((*floats).blue = malloc(psiconv_list_length(pixels) *
994 sizeof(*(*floats).blue))))
995 goto ERROR3;
996 (*floats).length = psiconv_list_length(pixels);
997
998 for (i = 0; i < psiconv_list_length(pixels); i++) {
999 if (!(pixel = psiconv_list_get(pixels,i)))
1000 goto ERROR4;
1001 #ifdef LOUD
1002 psiconv_progress(config,lev+2,off, "Handling pixel %04x (%04x)",i,*pixel);
1003 #endif
1004 if (!palet.length) {
1005 if (color) {
1006 (*floats).blue[i] = ((float) (*pixel & ((1 << bluebits) - 1))) /
1007 (1 << bluebits);
1008 (*floats).green[i] = ((float) ((*pixel >> bluebits) &
1009 ((1 << greenbits) - 1))) / (1 << greenbits);
1010 (*floats).red[i] = ((float) ((*pixel >> (bluebits+greenbits)) &
1011 ((1 << redbits) - 1))) / (1 << redbits);
1012 } else {
1013 (*floats).red[i] = (*floats).green[i] =
1014 (*floats).blue[i] = ((float) *pixel) /
1015 (1 << colordepth);
1016 }
1017 } else {
1018 if (*pixel >= palet.length) {
1019 psiconv_warn(config,lev+2,off,
1020 "Invalid palet color found (using color 0x00)");
1021 (*floats).red[i] = palet.red[0];
1022 (*floats).green[i] = palet.green[0];
1023 (*floats).blue[i] = palet.blue[0];
1024 } else {
1025 (*floats).red[i] = palet.red[*pixel];
1026 (*floats).green[i] = palet.green[*pixel];
1027 (*floats).blue[i] = palet.blue[*pixel];
1028 }
1029 }
1030 #ifdef LOUD
1031 psiconv_debug(config,lev+2,off, "Pixel: Red (%f), green (%f), blue (%f)",
1032 (*floats).red[i],(*floats).green[i],(*floats).blue[i]);
1033 #endif
1034 }
1035 psiconv_progress(config,lev+1,off,"Finished converting pixels to floats");
1036 return 0;
1037
1038 ERROR4:
1039 free((*floats).blue);
1040 ERROR3:
1041 free((*floats).green);
1042 ERROR2:
1043 free((*floats).red);
1044 ERROR1:
1045 psiconv_error(config,lev+1,off,"Converting pixels to floats failed");
1046 if (!res)
1047 return -PSICONV_E_NOMEM;
1048 else
1049 return res;
1050 }
1051
1052
1053

frodo@frodo.looijaard.name
ViewVC Help
Powered by ViewVC 1.1.26