/[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 142 - (show annotations)
Tue Jan 29 18:38:38 2002 UTC (17 years, 9 months ago) by frodo
File MIME type: text/plain
File size: 23396 byte(s)
(Frodo) DMALLOC support

1 /*
2 parse_image.c - Part of psiconv, a PSION 5 file formats converter
3 Copyright (c) 1999, 2000 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
28 #ifdef DMALLOC
29 #include <dmalloc.h>
30 #endif
31
32
33 int psiconv_parse_jumptable_section(const psiconv_buffer buf,int lev,
34 psiconv_u32 off, int *length,
35 psiconv_jumptable_section *result)
36 {
37 int res = 0;
38 int len = 0;
39 psiconv_u32 listlen,temp;
40 int i;
41
42 psiconv_progress(lev+1,off+len,"Going to read the jumptable section");
43 if (!((*result) = psiconv_list_new(sizeof(psiconv_u32))))
44 goto ERROR1;
45
46 psiconv_progress(lev+2,off+len,"Going to read the list length");
47 listlen = psiconv_read_u32(buf,lev+2,off+len,&res);
48 if (res)
49 goto ERROR2;
50 psiconv_debug(lev+2,off+len,"List length: %08x",listlen);
51 len += 4;
52
53 psiconv_progress(lev+2,off+len,"Going to read the list");
54 for (i = 0; i < listlen; i++) {
55 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
56 if (res)
57 goto ERROR2;
58 if ((res = psiconv_list_add(*result,&temp)))
59 goto ERROR2;
60 psiconv_debug(lev+3,off+len,"Offset: %08x",temp);
61 len += 4;
62 }
63
64 if (length)
65 *length = len;
66
67 psiconv_progress(lev+1,off+len-1,"End of jumptable section "
68 "(total length: %08x)", len);
69
70 return 0;
71
72 ERROR2:
73 psiconv_list_free(*result);
74 ERROR1:
75 psiconv_warn(lev+1,off,"Reading of Jumptable Section failed");
76 if (length)
77 *length = 0;
78 if (!res)
79 return -PSICONV_E_NOMEM;
80 else
81 return res;
82 }
83
84 static int decode_byte(int lev, psiconv_u32 off,
85 psiconv_paint_data_section data, psiconv_u32 *pixelnr,
86 psiconv_u8 byte, int bits_per_pixel, int linelen,
87 int *linepos,int picsize)
88 {
89 int mask = (bits_per_pixel << 1) -1;
90 int i;
91 if (*linepos < (data->xsize + (8/bits_per_pixel) - 1) / (8/bits_per_pixel))
92 for (i = 0; i < 8/bits_per_pixel; i ++) {
93 if ((i != 0) && ((*pixelnr % (data->xsize)) == 0)) {
94 psiconv_debug(lev+1,off,"Skipping padding: %02x",byte);
95 i = 8;
96 } else if (*pixelnr >= picsize) {
97 psiconv_warn(lev+1,off,"Corrupted picture data!");
98 psiconv_debug(lev+1,off,"Trying to write a pixel too far");
99 return -1;
100 } else {
101 data->red[*pixelnr] = data->green[*pixelnr] = data->blue[*pixelnr] =
102 ((float) (byte & mask)) / ((1 << bits_per_pixel) -1);
103 psiconv_debug(lev+1,off,"Pixel %04x: (%04x,%04x) value %02x, color %f",
104 *pixelnr,*pixelnr % data->xsize,
105 *pixelnr / data->xsize, byte&mask, data->red[*pixelnr]);
106 byte = byte >> bits_per_pixel;
107 (*pixelnr) ++;
108 }
109 }
110 else
111 psiconv_debug(lev+1,off,"Skipping padding byte");
112 (*linepos) ++;
113 if (*linepos == linelen)
114 *linepos = 0;
115 return 0;
116 }
117
118
119 int psiconv_parse_paint_data_section(const psiconv_buffer buf,int lev,
120 psiconv_u32 off, int *length,int isclipart,
121 psiconv_paint_data_section *result)
122 {
123 int res = 0;
124 int len = 0;
125 psiconv_u32 size,offset,picsize,temp,datasize,pixelnr,datanr,linelen;
126 psiconv_u8 marker;
127 int i,leng;
128 psiconv_u32 bits_per_pixel,compression;
129 int linepos = 0;
130
131 psiconv_progress(lev+1,off,"Going to read a paint data section");
132 if (!((*result) = malloc(sizeof(**result))))
133 goto ERROR1;
134
135 psiconv_progress(lev+2,off+len,"Going to read section size");
136 size = psiconv_read_u32(buf,lev+2,off+len,&res);
137 if (res)
138 goto ERROR2;
139 psiconv_debug(lev+2,off+len,"Section size: %08x",size);
140 len += 4;
141
142 psiconv_progress(lev+2,off+len,"Going to read pixel data offset");
143 offset = psiconv_read_u32(buf,lev+2,off+len,&res);
144 if (res)
145 goto ERROR2;
146 if (offset != 0x28) {
147 psiconv_warn(lev+2,off+len,
148 "Paint data section data offset has unexpected value");
149 psiconv_debug(lev+2,off+len,
150 "Data offset: read %08x, expected %08x",offset,0x28);
151 res = -1;
152 }
153 len += 4;
154
155 psiconv_progress(lev+2,off+len,"Going to read picture X size");
156 (*result)->xsize = psiconv_read_u32(buf,lev+2,off+len,&res);
157 if (res)
158 goto ERROR2;
159 psiconv_debug(lev+2,off+len,"Picture X size: %08x:",(*result)->xsize);
160 len += 4;
161
162 psiconv_progress(lev+2,off+len,"Going to read picture Y size");
163 (*result)->ysize = psiconv_read_u32(buf,lev+2,off+len,&res);
164 if (res)
165 goto ERROR2;
166 psiconv_debug(lev+2,off+len,"Picture Y size: %08x:",(*result)->ysize);
167 len += 4;
168
169 picsize = (*result)->ysize * (*result)->xsize;
170
171 psiconv_progress(lev+2,off+len,"Going to read the real picture x size");
172 (*result)->pic_xsize = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
173 if (res)
174 goto ERROR2;
175 psiconv_debug(lev+2,off+len,"Picture x size: %f",(*result)->pic_xsize);
176 len += leng;
177
178 psiconv_progress(lev+2,off+len,"Going to read the real picture y size");
179 (*result)->pic_ysize = psiconv_read_length(buf,lev+2,off+len,&leng,&res);
180 if (res)
181 goto ERROR2;
182 psiconv_debug(lev+2,off+len,"Picture y size: %f",(*result)->pic_ysize);
183 len += leng;
184
185 psiconv_progress(lev+2,off+len,"Going to read the number of bits per pixel");
186 bits_per_pixel=psiconv_read_u32(buf,lev+2,off+len,&res);
187 if (res)
188 goto ERROR2;
189 if (bits_per_pixel > 8) {
190 psiconv_warn(lev+2,off+len,"Picture has too many colors");
191 psiconv_debug(lev+2,off+len,"Read %d colorbits",bits_per_pixel);
192 res = -PSICONV_E_PARSE;
193 goto ERROR2;
194 }
195 psiconv_debug(lev+2,off+len,"Bits per pixel: %d",bits_per_pixel);
196 len += 4;
197
198 for (i = 0 ; i < 2; i++) {
199 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
200 if (res)
201 goto ERROR2;
202 if (temp != 00) {
203 psiconv_warn(lev+2,off+len,
204 "Paint data section prologue has unknown values (ignored)");
205 psiconv_debug(lev+2,off+len,
206 "offset %02x: read %08x, expected %08x",i,temp, 0x00);
207 }
208 len += 4;
209 }
210
211 psiconv_progress(lev+2,off+len,
212 "Going to read whether RLE compression is used");
213 compression=psiconv_read_u32(buf,lev+2,off+len,&res);
214 if (res)
215 goto ERROR2;
216 if (compression > 1) {
217 psiconv_warn(lev+2,off+len,"Paint data section has unknown "
218 "compression type, assuming RLE");
219 psiconv_debug(lev+2,off+len,"Read compression type %d",compression);
220 compression = 1;
221 }
222 psiconv_debug(lev+2,off+len,"Compression: %s",compression?"RLE":"none");
223 len += 4;
224
225 if (isclipart) {
226 psiconv_progress(lev+2,off+len,"Going to read an unknown long");
227 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
228 if (res)
229 goto ERROR2;
230 if (temp != 0xffffffff) {
231 psiconv_warn(lev+2,off+len,
232 "Paint data section prologue has unknown values (ignoring)");
233 psiconv_debug(lev+2,off+len,
234 "offset %02x: read %08x, expected %08x",i,temp, 0xffffffff);
235 }
236 len += 4;
237 psiconv_progress(lev+2,off+len,"Going to read a second unknown long");
238 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
239 if (res)
240 goto ERROR2;
241 if (temp != 0x44) {
242 psiconv_warn(lev+2,off+len,
243 "Paint data section prologue has unknown values (ignoring)");
244 psiconv_debug(lev+2,off+len,
245 "offset %02x: read %08x, expected %08x",i,temp, 0x44);
246 }
247 len += 4;
248 }
249
250 if (!((*result)->red = malloc(sizeof(float) * picsize)))
251 goto ERROR2;
252 if (!((*result)->green = malloc(sizeof(float) * picsize)))
253 goto ERROR3;
254 if (!((*result)->blue = malloc(sizeof(float) * picsize)))
255 goto ERROR4;
256 len = offset;
257 datasize = size - len;
258 if (isclipart)
259 len += 8;
260
261 psiconv_progress(lev+2,off+len,"Going to read the pixel data");
262 pixelnr = 0;
263 datanr = 0;
264 if (!compression) {
265 linelen = datasize / (*result)->ysize;
266 psiconv_debug(lev+3,off+len,"Line length: %04x bytes",linelen);
267 while((datanr < datasize)) {
268 temp = psiconv_read_u8(buf,lev+2,off+len+datanr,&res);
269 if (res)
270 goto ERROR5;
271 if (decode_byte(lev+3,off+len+datanr,*result,&pixelnr,temp,bits_per_pixel,
272 linelen,&linepos,picsize)) {
273 res = -PSICONV_E_PARSE;
274 break;
275 }
276 datanr++;
277 }
278 } else {
279 psiconv_progress(lev+2,off+len,"First pass: determining line length");
280 datanr = 0;
281 i = 0;
282 while (datanr < datasize) {
283 marker = psiconv_read_u8(buf,lev+3,off+len+datanr,&res);
284 if (res)
285 goto ERROR5;
286 if (marker >= 0x80) {
287 datanr += 0x100 - marker + 1;
288 i += 0x100 - marker;
289 } else {
290 datanr += 2;
291 i += marker + 1;
292 }
293 }
294 linelen = i / (*result)->ysize;
295 datanr=0;
296 psiconv_debug(lev+2,off+len,"Linelen: %04x bytes",linelen);
297 while((datanr < datasize)) {
298 marker = psiconv_read_u8(buf,lev+3,off+len+datanr,&res);
299 if (res)
300 goto ERROR5;
301 psiconv_debug(lev+3,off+len+datanr,
302 "Pixelnr %08x, Datanr %08x: Read marker %02x",
303 pixelnr,datanr,marker);
304 datanr ++;
305 if (marker >= 0x80) {
306 /* 0x100 - marker bytes of data follow */
307 for (i = 0; i < 0x100-marker; i++,datanr++) {
308 if (datanr >= datasize) {
309 psiconv_warn(lev+3,off+len+datanr,"Corrupted picture data");
310 psiconv_debug(lev+3,off+len+datanr,
311 "Picsize: %08x, Datasize: %08x, Pixelnr: %08x,"
312 "Datanr: %08x, marker: %02x",picsize,datasize,pixelnr,
313 datanr,marker);
314 res = -PSICONV_E_PARSE;
315 break;
316 }
317 temp = psiconv_read_u8(buf,lev+2,off+len+datanr,&res);
318 if (res)
319 goto ERROR5;
320 if (decode_byte(lev+2,off+len+datanr,*result,&pixelnr,temp,
321 bits_per_pixel,linelen,&linepos,picsize)) {
322 res = -PSICONV_E_PARSE;
323 break;
324 }
325 }
326 } else {
327 if (datanr >= datasize) {
328 psiconv_warn(lev+3,off+len+datanr,"Corrupted picture data");
329 psiconv_debug(lev+3,off+len+datanr,
330 "Picsize: %08x, Datasize: %08x, Pixelnr: %08x,"
331 "Datanr: %08x, marker: %02x",picsize,datasize,pixelnr,
332 datanr,marker);
333 res = -PSICONV_E_PARSE;
334 } else {
335 temp = psiconv_read_u8(buf,lev+3,off+len+datanr,&res);
336 if (res)
337 goto ERROR5;
338 for (i = 0; i <= marker; i++) {
339 if (decode_byte(lev+2,off+len+datanr,*result,&pixelnr,temp,
340 bits_per_pixel,linelen,&linepos,picsize)) {
341 res = -PSICONV_E_PARSE;
342 break;
343 }
344 }
345 datanr ++;
346 }
347 }
348 }
349 }
350
351 if (linepos >= ((*result)->xsize + (8/bits_per_pixel) - 1) /
352 (8/bits_per_pixel))
353 datanr += (linelen - linepos);
354
355 if (res || (datanr != datasize) || (pixelnr != picsize)) {
356 psiconv_warn(lev+2,off+len,"Corrupted picture data!");
357 psiconv_debug(lev+3,off+len+datanr,
358 "Picsize: %08x, Datasize: %08x, Pixelnr: %08x,"
359 "Datanr: %08x",picsize,datasize,pixelnr,datanr);
360 goto ERROR5;
361 }
362
363 len += datanr;
364
365 if (length)
366 *length = len;
367
368 psiconv_progress(lev+1,off+len-1,"End of paint data section "
369 "(total length: %08x)", len);
370
371 return res;
372
373 ERROR5:
374 free((*result)->blue);
375 ERROR4:
376 free((*result)->green);
377 ERROR3:
378 free((*result)->red);
379 ERROR2:
380 free (*result);
381 ERROR1:
382 psiconv_warn(lev+1,off,"Reading of Paint Data Section failed");
383 if (length)
384 *length = 0;
385 if (!res)
386 return -PSICONV_E_NOMEM;
387 else
388 return res;
389 }
390
391 int psiconv_parse_sketch_section(const psiconv_buffer buf, int lev,
392 psiconv_u32 off, int *length, int is_object,
393 psiconv_sketch_section *result)
394 {
395 int res=0;
396 int len=0;
397 psiconv_u32 temp;
398 int leng;
399 int i;
400
401 psiconv_progress(lev+1,off,"Going to read the sketch section");
402 if (!(*result = malloc(sizeof(**result))))
403 goto ERROR1;
404
405 if (!is_object) {
406 psiconv_progress(lev+2,off+len,"Going to read the form hor. size");
407 (*result)->form_xsize = psiconv_read_u16(buf,lev+2,off + len,&res);
408 if (res)
409 goto ERROR2;
410 psiconv_debug(lev+2,off+len,"Form hor. size: %04x",
411 (*result)->form_xsize);
412 len += 0x02;
413 psiconv_progress(lev+2,off+len,"Going to read the form ver. size");
414 (*result)->form_ysize = psiconv_read_u16(buf,lev+2,off + len,&res);
415 if (res)
416 goto ERROR2;
417 psiconv_debug(lev+2,off+len,"Form ver. size: %04x",
418 (*result)->form_ysize);
419 len += 0x02;
420 psiconv_progress(lev+2,off+len,"Going to read the picture hor. offset");
421 (*result)->picture_x_offset = psiconv_read_u16(buf,lev+2,off + len,&res);
422 if (res)
423 goto ERROR2;
424 psiconv_debug(lev+2,off+len,"Picture hor. offset: %04x",
425 (*result)->picture_x_offset);
426 len += 0x02;
427 psiconv_progress(lev+2,off+len,"Going to read the picture ver. offset");
428 (*result)->picture_y_offset = psiconv_read_u16(buf,lev+2,off + len,&res);
429 if (res)
430 goto ERROR2;
431 psiconv_debug(lev+2,off+len,"Picture ver. offset: %04x",
432 (*result)->picture_y_offset);
433 len += 0x02;
434 psiconv_progress(lev+2,off+len,"Going to skip 5 words of zeros");
435 for (i = 0; i < 5; i++) {
436 temp = psiconv_read_u16(buf,lev+2,off+len,&res);
437 if (res)
438 goto ERROR2;
439 if (temp != 0) {
440 psiconv_warn(lev+2,off+len,
441 "Unexpected value in sketch section preamble (ignored)");
442 psiconv_debug(lev+2,off+len,"Word %d: Read %04x, expected %04x",i,
443 temp,0);
444 }
445 off += 0x02;
446 }
447 } else {
448 psiconv_progress(lev+2,off+len,"Going to read the displayed hor. size");
449 (*result)->picture_xsize = psiconv_read_u16(buf,lev+2,off + len,&res);
450 if (res)
451 goto ERROR2;
452 psiconv_debug(lev+2,off+len,"Displayed hor. size: %04x",
453 (*result)->picture_xsize);
454 len += 0x02;
455 psiconv_progress(lev+2,off+len,"Going to read the displayed ver. size");
456 (*result)->picture_ysize = psiconv_read_u16(buf,lev+2,off + len,&res);
457 if (res)
458 goto ERROR2;
459 psiconv_debug(lev+2,off+len,"Displayed ver. size: %04x",
460 (*result)->picture_ysize);
461 len += 0x02;
462
463 psiconv_progress(lev+2,off+len,"Going to skip 2 words of zeros");
464 for (i = 0; i < 2; i++) {
465 temp = psiconv_read_u16(buf,lev+2,off+len,&res);
466 if (res)
467 goto ERROR2;
468 if (temp != 0) {
469 psiconv_warn(lev+2,off+len,
470 "Unexpected value in sketch section preamble (ignored)");
471 psiconv_debug(lev+2,off+len,"Word %d: Read %04x, expected %04x",i,
472 temp,0);
473 }
474 off += 0x02;
475 }
476 psiconv_progress(lev+2,off+len,"Going to read the picture hor. offset");
477 (*result)->picture_x_offset = psiconv_read_u16(buf,lev+2,off + len,&res);
478 if (res)
479 goto ERROR2;
480 psiconv_debug(lev+2,off+len,"Picture hor. offset: %04x",
481 (*result)->picture_x_offset);
482 len += 0x02;
483 psiconv_progress(lev+2,off+len,"Going to read the picture ver. offset");
484 (*result)->picture_y_offset = psiconv_read_u16(buf,lev+2,off + len,&res);
485 if (res)
486 goto ERROR2;
487 psiconv_debug(lev+2,off+len,"Picture ver. offset: %04x",
488 (*result)->picture_y_offset);
489 len += 0x02;
490 psiconv_progress(lev+2,off+len,"Going to read the form hor. size");
491 (*result)->form_xsize = psiconv_read_u16(buf,lev+2,off + len,&res);
492 if (res)
493 goto ERROR2;
494 psiconv_debug(lev+2,off+len,"Form hor. size: %04x",
495 (*result)->form_xsize);
496 len += 0x02;
497 psiconv_progress(lev+2,off+len,"Going to read the form ver. size");
498 (*result)->form_ysize = psiconv_read_u16(buf,lev+2,off + len,&res);
499 if (res)
500 goto ERROR2;
501 psiconv_debug(lev+2,off+len,"Form ver. size: %04x",
502 (*result)->form_ysize);
503 len += 0x02;
504 psiconv_progress(lev+2,off+len,"Going to skip 1 zero word");
505 temp = psiconv_read_u16(buf,lev+2,off+len,&res);
506 if (res)
507 goto ERROR2;
508 if (temp != 0) {
509 psiconv_warn(lev+2,off+len,
510 "Unexpected value in sketch section preamble (ignored)");
511 psiconv_debug(lev+2,off+len,"Read %04x, expected %04x",i, temp,0);
512 }
513 off += 0x02;
514 }
515
516 psiconv_progress(lev+2,off+len,"Going to read the picture data");
517 if ((res = psiconv_parse_paint_data_section(buf,lev+2,off+len,&leng,0,
518 &((*result)->picture))))
519 goto ERROR2;
520 off += leng;
521 if (!is_object) {
522 (*result)->picture_xsize = (*result)->picture->xsize;
523 (*result)->picture_ysize = (*result)->picture->ysize;
524 }
525
526 psiconv_progress(lev+2,off+len,"Going to read the hor. magnification");
527 (*result)->magnification_x = psiconv_read_u16(buf,lev+2,off+len,&res)/1000.0;
528 if (res)
529 goto ERROR3;
530 psiconv_debug(lev+2,off+len,"Form hor. magnification: %f",
531 (*result)->magnification_x);
532 len += 0x02;
533 psiconv_progress(lev+2,off+len,"Going to read the ver. magnification");
534 (*result)->magnification_y = psiconv_read_u16(buf,lev+2,off+len,&res)/1000.0;
535 if (res)
536 goto ERROR3;
537 psiconv_debug(lev+2,off+len,"Form ver. magnification: %f",
538 (*result)->magnification_y);
539 len += 0x02;
540
541 psiconv_progress(lev+2,off+len,"Going to read the left cut");
542 temp = psiconv_read_u32(buf,lev+2,off + len,&res);
543 if (res)
544 goto ERROR3;
545 (*result)->cut_left = (temp * 6.0) / (*result)->picture_xsize;
546 psiconv_debug(lev+2,off+len,"Left cut: raw %08x, real: %f",
547 temp,(*result)->cut_left);
548 len += 0x04;
549 psiconv_progress(lev+2,off+len,"Going to read the right cut");
550 temp = psiconv_read_u32(buf,lev+2,off + len,&res);
551 if (res)
552 goto ERROR3;
553 (*result)->cut_right = (temp * 6.0) / (*result)->picture_xsize;
554 psiconv_debug(lev+2,off+len,"Right cut: raw %08x, real: %f",
555 temp,(*result)->cut_right);
556 len += 0x04;
557 psiconv_progress(lev+2,off+len,"Going to read the top cut");
558 temp = psiconv_read_u32(buf,lev+2,off + len,&res);
559 if (res)
560 goto ERROR3;
561 (*result)->cut_top = (temp * 6.0) / (*result)->picture_ysize;
562 psiconv_debug(lev+2,off+len,"Top cut: raw %08x, real: %f",
563 temp,(*result)->cut_top);
564 len += 0x04;
565 psiconv_progress(lev+2,off+len,"Going to read the bottom cut");
566 temp = psiconv_read_u32(buf,lev+2,off + len,&res);
567 if (res)
568 goto ERROR3;
569 (*result)->cut_bottom = (temp * 6.0) / (*result)->picture_ysize;
570 psiconv_debug(lev+2,off+len,"Bottom cut: raw %08x, real: %f",
571 temp,(*result)->cut_bottom);
572 len += 0x04;
573
574 if (length)
575 *length = len;
576
577 psiconv_progress(lev,off+len-1,
578 "End of sketch section (total length: %08x)", len);
579
580 return res;
581 ERROR3:
582 psiconv_free_paint_data_section((*result)->picture);
583 ERROR2:
584 free (*result);
585 ERROR1:
586 psiconv_warn(lev+1,off,"Reading of Sketch Section failed");
587 if (length)
588 *length = 0;
589 if (!res)
590 return -PSICONV_E_NOMEM;
591 else
592 return res;
593 }
594
595
596 int psiconv_parse_clipart_section(const psiconv_buffer buf,int lev,
597 psiconv_u32 off, int *length,
598 psiconv_clipart_section *result)
599 {
600 int res=0;
601 int len=0;
602 int leng;
603 psiconv_u32 temp;
604
605 psiconv_progress(lev+1,off+len,"Going to read the clipart section");
606 if (!(*result = malloc(sizeof(**result))))
607 goto ERROR1;
608
609 psiconv_progress(lev+2,off+len,"Going to read the section ID");
610 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
611 if (res)
612 goto ERROR2;
613 if (temp != PSICONV_ID_CLIPART_ITEM) {
614 psiconv_warn(lev+2,off+len,
615 "Unexpected value in clipart section preamble (ignored)");
616 psiconv_debug(lev+2,off+len,"Read %08x, expected %08x",temp,
617 PSICONV_ID_CLIPART_ITEM);
618 } else
619 psiconv_debug(lev+2,off+len,"Clipart ID: %08x", temp);
620 off += 4;
621
622 psiconv_progress(lev+2,off+len,"Going to read an unknown long");
623 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
624 if (res)
625 goto ERROR2;
626 if (temp != 0x02) {
627 psiconv_warn(lev+2,off+len,
628 "Unexpected value in clipart section preamble (ignored)");
629 psiconv_debug(lev+2,off+len,"Read %08x, expected %08x",temp,
630 0x02);
631 } else
632 psiconv_debug(lev+2,off+len,"First unknown long: %08x", temp);
633 off += 4;
634
635 psiconv_progress(lev+2,off+len,"Going to read a second unknown long");
636 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
637 if (res)
638 goto ERROR2;
639 if (temp != 0) {
640 psiconv_warn(lev+2,off+len,
641 "Unexpected value in clipart section preamble (ignored)");
642 psiconv_debug(lev+2,off+len,"Read %08x, expected %08x",temp, 0);
643 } else
644 psiconv_debug(lev+2,off+len,"Second unknown long: %08x", temp);
645 off += 4;
646
647 psiconv_progress(lev+2,off+len,"Going to read a third unknown long");
648 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
649 if (res)
650 goto ERROR2;
651 if (temp != 0) {
652 psiconv_warn(lev+2,off+len,
653 "Unexpected value in clipart section preamble (ignored)");
654 psiconv_debug(lev+2,off+len,"Read %08x, expected %08x",temp, 0);
655 } else
656 psiconv_debug(lev+2,off+len,"Third unknown long: %08x", temp);
657 off += 4;
658
659 psiconv_progress(lev+2,off+len,"Going to read a fourth unknown long");
660 temp = psiconv_read_u32(buf,lev+2,off+len,&res);
661 if (res)
662 goto ERROR2;
663 if ((temp != 0x0c) && (temp != 0x08)) {
664 psiconv_warn(lev+2,off+len,
665 "Unexpected value in clipart section preamble (ignored)");
666 psiconv_debug(lev+2,off+len,"Read %08x, expected %08x or %08x",temp,
667 0x0c, 0x08);
668 } else
669 psiconv_debug(lev+2,off+len,"Fourth unknown long: %08x", temp);
670 off += 4;
671
672 psiconv_progress(lev+2,off+len,"Going to read the Paint Data Section");
673 if ((res = psiconv_parse_paint_data_section(buf,lev+2,off+len,&leng,1,
674 &((*result)->picture))))
675 goto ERROR2;
676 len += leng;
677
678 if (length)
679 *length = len;
680
681 psiconv_progress(lev,off+len-1,
682 "End of clipart section (total length: %08x)", len);
683 return 0;
684
685 ERROR2:
686 free (*result);
687 ERROR1:
688 psiconv_warn(lev+1,off,"Reading of Font failed");
689 if (length)
690 *length = 0;
691 if (!res)
692 return -PSICONV_E_NOMEM;
693 else
694 return res;
695 }

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