1 |
/* |
/* -*- c-basic-offset: 8 -*- |
2 |
rdesktop: A Remote Desktop Protocol client. |
rdesktop: A Remote Desktop Protocol client. |
3 |
Bitmap decompression routines |
Bitmap decompression routines |
4 |
Copyright (C) Matthew Chapman 1999-2002 |
Copyright (C) Matthew Chapman 1999-2007 |
5 |
|
|
6 |
This program is free software; you can redistribute it and/or modify |
This program is free software; you can redistribute it and/or modify |
7 |
it under the terms of the GNU General Public License as published by |
it under the terms of the GNU General Public License as published by |
8 |
the Free Software Foundation; either version 2 of the License, or |
the Free Software Foundation; either version 2 of the License, or |
9 |
(at your option) any later version. |
(at your option) any later version. |
10 |
|
|
11 |
This program is distributed in the hope that it will be useful, |
This program is distributed in the hope that it will be useful, |
12 |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
but WITHOUT ANY WARRANTY; without even the implied warranty of |
13 |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
14 |
GNU General Public License for more details. |
GNU General Public License for more details. |
15 |
|
|
16 |
You should have received a copy of the GNU General Public License |
You should have received a copy of the GNU General Public License |
17 |
along with this program; if not, write to the Free Software |
along with this program; if not, write to the Free Software |
18 |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. |
19 |
*/ |
*/ |
20 |
|
|
21 |
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/* three seperate function for speed when decompressing the bitmaps |
22 |
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when modifing one function make the change in the others |
23 |
|
jay.sorg@gmail.com */ |
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25 |
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/* indent is confused by this file */ |
26 |
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/* *INDENT-OFF* */ |
27 |
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28 |
#include "rdesktop.h" |
#include "rdesktop.h" |
29 |
|
|
30 |
#define CVAL(p) (*(p++)) |
#define CVAL(p) (*(p++)) |
31 |
|
#ifdef NEED_ALIGN |
32 |
|
#ifdef L_ENDIAN |
33 |
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#define CVAL2(p, v) { v = (*(p++)); v |= (*(p++)) << 8; } |
34 |
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#else |
35 |
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#define CVAL2(p, v) { v = (*(p++)) << 8; v |= (*(p++)); } |
36 |
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#endif /* L_ENDIAN */ |
37 |
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#else |
38 |
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#define CVAL2(p, v) { v = (*((uint16*)p)); p += 2; } |
39 |
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#endif /* NEED_ALIGN */ |
40 |
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|
41 |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
42 |
|
|
45 |
while((count & ~0x7) && ((x+8) < width)) \ |
while((count & ~0x7) && ((x+8) < width)) \ |
46 |
UNROLL8( statement; count--; x++; ); \ |
UNROLL8( statement; count--; x++; ); \ |
47 |
\ |
\ |
48 |
while((count > 0) && (x < width)) { statement; count--; x++; } \ |
while((count > 0) && (x < width)) \ |
49 |
|
{ \ |
50 |
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statement; \ |
51 |
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count--; \ |
52 |
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x++; \ |
53 |
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} \ |
54 |
} |
} |
55 |
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|
56 |
#define MASK_UPDATE() \ |
#define MASK_UPDATE() \ |
63 |
} \ |
} \ |
64 |
} |
} |
65 |
|
|
66 |
BOOL |
/* 1 byte bitmap decompress */ |
67 |
bitmap_decompress(unsigned char *output, int width, int height, unsigned char *input, int size) |
static RD_BOOL |
68 |
|
bitmap_decompress1(uint8 * output, int width, int height, uint8 * input, int size) |
69 |
{ |
{ |
70 |
unsigned char *end = input + size; |
uint8 *end = input + size; |
71 |
unsigned char *prevline = NULL, *line = NULL; |
uint8 *prevline = NULL, *line = NULL; |
72 |
int opcode, count, offset, isfillormix, x = width; |
int opcode, count, offset, isfillormix, x = width; |
73 |
int lastopcode = -1, insertmix = False, bicolour = False; |
int lastopcode = -1, insertmix = False, bicolour = False; |
74 |
uint8 code, colour1 = 0, colour2 = 0; |
uint8 code; |
75 |
uint8 mixmask, mask = 0, mix = 0xff; |
uint8 colour1 = 0, colour2 = 0; |
76 |
|
uint8 mixmask, mask = 0; |
77 |
|
uint8 mix = 0xff; |
78 |
int fom_mask = 0; |
int fom_mask = 0; |
79 |
|
|
80 |
while (input < end) |
while (input < end) |
82 |
fom_mask = 0; |
fom_mask = 0; |
83 |
code = CVAL(input); |
code = CVAL(input); |
84 |
opcode = code >> 4; |
opcode = code >> 4; |
|
|
|
85 |
/* Handle different opcode forms */ |
/* Handle different opcode forms */ |
86 |
switch (opcode) |
switch (opcode) |
87 |
{ |
{ |
92 |
count = code & 0xf; |
count = code & 0xf; |
93 |
offset = 16; |
offset = 16; |
94 |
break; |
break; |
|
|
|
95 |
case 0xf: |
case 0xf: |
96 |
opcode = code & 0xf; |
opcode = code & 0xf; |
97 |
if (opcode < 9) |
if (opcode < 9) |
105 |
} |
} |
106 |
offset = 0; |
offset = 0; |
107 |
break; |
break; |
|
|
|
108 |
default: |
default: |
109 |
opcode >>= 1; |
opcode >>= 1; |
110 |
count = code & 0x1f; |
count = code & 0x1f; |
111 |
offset = 32; |
offset = 32; |
112 |
break; |
break; |
113 |
} |
} |
|
|
|
114 |
/* Handle strange cases for counts */ |
/* Handle strange cases for counts */ |
115 |
if (offset != 0) |
if (offset != 0) |
116 |
{ |
{ |
117 |
isfillormix = ((opcode == 2) || (opcode == 7)); |
isfillormix = ((opcode == 2) || (opcode == 7)); |
|
|
|
118 |
if (count == 0) |
if (count == 0) |
119 |
{ |
{ |
120 |
if (isfillormix) |
if (isfillormix) |
127 |
count <<= 3; |
count <<= 3; |
128 |
} |
} |
129 |
} |
} |
|
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|
130 |
/* Read preliminary data */ |
/* Read preliminary data */ |
131 |
switch (opcode) |
switch (opcode) |
132 |
{ |
{ |
154 |
opcode = 0x02; |
opcode = 0x02; |
155 |
fom_mask = 5; |
fom_mask = 5; |
156 |
break; |
break; |
|
|
|
157 |
} |
} |
|
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|
158 |
lastopcode = opcode; |
lastopcode = opcode; |
159 |
mixmask = 0; |
mixmask = 0; |
|
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|
160 |
/* Output body */ |
/* Output body */ |
161 |
while (count > 0) |
while (count > 0) |
162 |
{ |
{ |
164 |
{ |
{ |
165 |
if (height <= 0) |
if (height <= 0) |
166 |
return False; |
return False; |
|
|
|
167 |
x = 0; |
x = 0; |
168 |
height--; |
height--; |
|
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|
169 |
prevline = line; |
prevline = line; |
170 |
line = output + height * width; |
line = output + height * width; |
171 |
} |
} |
|
|
|
172 |
switch (opcode) |
switch (opcode) |
173 |
{ |
{ |
174 |
case 0: /* Fill */ |
case 0: /* Fill */ |
178 |
line[x] = mix; |
line[x] = mix; |
179 |
else |
else |
180 |
line[x] = prevline[x] ^ mix; |
line[x] = prevline[x] ^ mix; |
|
|
|
181 |
insertmix = False; |
insertmix = False; |
182 |
count--; |
count--; |
183 |
x++; |
x++; |
184 |
} |
} |
|
|
|
185 |
if (prevline == NULL) |
if (prevline == NULL) |
186 |
{ |
{ |
187 |
REPEAT(line[x] = 0); |
REPEAT(line[x] = 0) |
188 |
} |
} |
189 |
else |
else |
190 |
{ |
{ |
191 |
REPEAT(line[x] = prevline[x]); |
REPEAT(line[x] = prevline[x]) |
192 |
} |
} |
193 |
break; |
break; |
|
|
|
194 |
case 1: /* Mix */ |
case 1: /* Mix */ |
195 |
if (prevline == NULL) |
if (prevline == NULL) |
196 |
{ |
{ |
197 |
REPEAT(line[x] = mix); |
REPEAT(line[x] = mix) |
198 |
} |
} |
199 |
else |
else |
200 |
{ |
{ |
201 |
REPEAT(line[x] = prevline[x] ^ mix); |
REPEAT(line[x] = prevline[x] ^ mix) |
202 |
} |
} |
203 |
break; |
break; |
|
|
|
204 |
case 2: /* Fill or Mix */ |
case 2: /* Fill or Mix */ |
205 |
if (prevline == NULL) |
if (prevline == NULL) |
206 |
{ |
{ |
207 |
REPEAT(MASK_UPDATE(); |
REPEAT |
208 |
if (mask & mixmask) line[x] = mix; |
( |
209 |
else |
MASK_UPDATE(); |
210 |
line[x] = 0;); |
if (mask & mixmask) |
211 |
|
line[x] = mix; |
212 |
|
else |
213 |
|
line[x] = 0; |
214 |
|
) |
215 |
} |
} |
216 |
else |
else |
217 |
{ |
{ |
218 |
REPEAT(MASK_UPDATE(); |
REPEAT |
219 |
if (mask & mixmask) |
( |
220 |
line[x] = prevline[x] ^ mix; |
MASK_UPDATE(); |
221 |
else |
if (mask & mixmask) |
222 |
line[x] = prevline[x];); |
line[x] = prevline[x] ^ mix; |
223 |
|
else |
224 |
|
line[x] = prevline[x]; |
225 |
|
) |
226 |
} |
} |
227 |
break; |
break; |
|
|
|
228 |
case 3: /* Colour */ |
case 3: /* Colour */ |
229 |
REPEAT(line[x] = colour2); |
REPEAT(line[x] = colour2) |
230 |
break; |
break; |
|
|
|
231 |
case 4: /* Copy */ |
case 4: /* Copy */ |
232 |
REPEAT(line[x] = CVAL(input)); |
REPEAT(line[x] = CVAL(input)) |
233 |
break; |
break; |
|
|
|
234 |
case 8: /* Bicolour */ |
case 8: /* Bicolour */ |
235 |
REPEAT(if (bicolour) |
REPEAT |
236 |
{ |
( |
237 |
line[x] = colour2; bicolour = False;} |
if (bicolour) |
238 |
else |
{ |
239 |
{ |
line[x] = colour2; |
240 |
line[x] = colour1; bicolour = True; count++;} |
bicolour = False; |
241 |
); |
} |
242 |
|
else |
243 |
|
{ |
244 |
|
line[x] = colour1; |
245 |
|
bicolour = True; count++; |
246 |
|
} |
247 |
|
) |
248 |
break; |
break; |
|
|
|
249 |
case 0xd: /* White */ |
case 0xd: /* White */ |
250 |
REPEAT(line[x] = 0xff); |
REPEAT(line[x] = 0xff) |
251 |
break; |
break; |
|
|
|
252 |
case 0xe: /* Black */ |
case 0xe: /* Black */ |
253 |
REPEAT(line[x] = 0x00); |
REPEAT(line[x] = 0) |
254 |
break; |
break; |
255 |
|
default: |
256 |
|
unimpl("bitmap opcode 0x%x\n", opcode); |
257 |
|
return False; |
258 |
|
} |
259 |
|
} |
260 |
|
} |
261 |
|
return True; |
262 |
|
} |
263 |
|
|
264 |
|
/* 2 byte bitmap decompress */ |
265 |
|
static RD_BOOL |
266 |
|
bitmap_decompress2(uint8 * output, int width, int height, uint8 * input, int size) |
267 |
|
{ |
268 |
|
uint8 *end = input + size; |
269 |
|
uint16 *prevline = NULL, *line = NULL; |
270 |
|
int opcode, count, offset, isfillormix, x = width; |
271 |
|
int lastopcode = -1, insertmix = False, bicolour = False; |
272 |
|
uint8 code; |
273 |
|
uint16 colour1 = 0, colour2 = 0; |
274 |
|
uint8 mixmask, mask = 0; |
275 |
|
uint16 mix = 0xffff; |
276 |
|
int fom_mask = 0; |
277 |
|
|
278 |
|
while (input < end) |
279 |
|
{ |
280 |
|
fom_mask = 0; |
281 |
|
code = CVAL(input); |
282 |
|
opcode = code >> 4; |
283 |
|
/* Handle different opcode forms */ |
284 |
|
switch (opcode) |
285 |
|
{ |
286 |
|
case 0xc: |
287 |
|
case 0xd: |
288 |
|
case 0xe: |
289 |
|
opcode -= 6; |
290 |
|
count = code & 0xf; |
291 |
|
offset = 16; |
292 |
|
break; |
293 |
|
case 0xf: |
294 |
|
opcode = code & 0xf; |
295 |
|
if (opcode < 9) |
296 |
|
{ |
297 |
|
count = CVAL(input); |
298 |
|
count |= CVAL(input) << 8; |
299 |
|
} |
300 |
|
else |
301 |
|
{ |
302 |
|
count = (opcode < 0xb) ? 8 : 1; |
303 |
|
} |
304 |
|
offset = 0; |
305 |
|
break; |
306 |
|
default: |
307 |
|
opcode >>= 1; |
308 |
|
count = code & 0x1f; |
309 |
|
offset = 32; |
310 |
|
break; |
311 |
|
} |
312 |
|
/* Handle strange cases for counts */ |
313 |
|
if (offset != 0) |
314 |
|
{ |
315 |
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
316 |
|
if (count == 0) |
317 |
|
{ |
318 |
|
if (isfillormix) |
319 |
|
count = CVAL(input) + 1; |
320 |
|
else |
321 |
|
count = CVAL(input) + offset; |
322 |
|
} |
323 |
|
else if (isfillormix) |
324 |
|
{ |
325 |
|
count <<= 3; |
326 |
|
} |
327 |
|
} |
328 |
|
/* Read preliminary data */ |
329 |
|
switch (opcode) |
330 |
|
{ |
331 |
|
case 0: /* Fill */ |
332 |
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
333 |
|
insertmix = True; |
334 |
|
break; |
335 |
|
case 8: /* Bicolour */ |
336 |
|
CVAL2(input, colour1); |
337 |
|
case 3: /* Colour */ |
338 |
|
CVAL2(input, colour2); |
339 |
|
break; |
340 |
|
case 6: /* SetMix/Mix */ |
341 |
|
case 7: /* SetMix/FillOrMix */ |
342 |
|
CVAL2(input, mix); |
343 |
|
opcode -= 5; |
344 |
|
break; |
345 |
|
case 9: /* FillOrMix_1 */ |
346 |
|
mask = 0x03; |
347 |
|
opcode = 0x02; |
348 |
|
fom_mask = 3; |
349 |
|
break; |
350 |
|
case 0x0a: /* FillOrMix_2 */ |
351 |
|
mask = 0x05; |
352 |
|
opcode = 0x02; |
353 |
|
fom_mask = 5; |
354 |
|
break; |
355 |
|
} |
356 |
|
lastopcode = opcode; |
357 |
|
mixmask = 0; |
358 |
|
/* Output body */ |
359 |
|
while (count > 0) |
360 |
|
{ |
361 |
|
if (x >= width) |
362 |
|
{ |
363 |
|
if (height <= 0) |
364 |
|
return False; |
365 |
|
x = 0; |
366 |
|
height--; |
367 |
|
prevline = line; |
368 |
|
line = ((uint16 *) output) + height * width; |
369 |
|
} |
370 |
|
switch (opcode) |
371 |
|
{ |
372 |
|
case 0: /* Fill */ |
373 |
|
if (insertmix) |
374 |
|
{ |
375 |
|
if (prevline == NULL) |
376 |
|
line[x] = mix; |
377 |
|
else |
378 |
|
line[x] = prevline[x] ^ mix; |
379 |
|
insertmix = False; |
380 |
|
count--; |
381 |
|
x++; |
382 |
|
} |
383 |
|
if (prevline == NULL) |
384 |
|
{ |
385 |
|
REPEAT(line[x] = 0) |
386 |
|
} |
387 |
|
else |
388 |
|
{ |
389 |
|
REPEAT(line[x] = prevline[x]) |
390 |
|
} |
391 |
|
break; |
392 |
|
case 1: /* Mix */ |
393 |
|
if (prevline == NULL) |
394 |
|
{ |
395 |
|
REPEAT(line[x] = mix) |
396 |
|
} |
397 |
|
else |
398 |
|
{ |
399 |
|
REPEAT(line[x] = prevline[x] ^ mix) |
400 |
|
} |
401 |
|
break; |
402 |
|
case 2: /* Fill or Mix */ |
403 |
|
if (prevline == NULL) |
404 |
|
{ |
405 |
|
REPEAT |
406 |
|
( |
407 |
|
MASK_UPDATE(); |
408 |
|
if (mask & mixmask) |
409 |
|
line[x] = mix; |
410 |
|
else |
411 |
|
line[x] = 0; |
412 |
|
) |
413 |
|
} |
414 |
|
else |
415 |
|
{ |
416 |
|
REPEAT |
417 |
|
( |
418 |
|
MASK_UPDATE(); |
419 |
|
if (mask & mixmask) |
420 |
|
line[x] = prevline[x] ^ mix; |
421 |
|
else |
422 |
|
line[x] = prevline[x]; |
423 |
|
) |
424 |
|
} |
425 |
|
break; |
426 |
|
case 3: /* Colour */ |
427 |
|
REPEAT(line[x] = colour2) |
428 |
|
break; |
429 |
|
case 4: /* Copy */ |
430 |
|
REPEAT(CVAL2(input, line[x])) |
431 |
|
break; |
432 |
|
case 8: /* Bicolour */ |
433 |
|
REPEAT |
434 |
|
( |
435 |
|
if (bicolour) |
436 |
|
{ |
437 |
|
line[x] = colour2; |
438 |
|
bicolour = False; |
439 |
|
} |
440 |
|
else |
441 |
|
{ |
442 |
|
line[x] = colour1; |
443 |
|
bicolour = True; |
444 |
|
count++; |
445 |
|
} |
446 |
|
) |
447 |
|
break; |
448 |
|
case 0xd: /* White */ |
449 |
|
REPEAT(line[x] = 0xffff) |
450 |
|
break; |
451 |
|
case 0xe: /* Black */ |
452 |
|
REPEAT(line[x] = 0) |
453 |
|
break; |
454 |
default: |
default: |
455 |
unimpl("bitmap opcode 0x%x\n", opcode); |
unimpl("bitmap opcode 0x%x\n", opcode); |
456 |
return False; |
return False; |
457 |
} |
} |
458 |
} |
} |
459 |
} |
} |
460 |
|
return True; |
461 |
|
} |
462 |
|
|
463 |
|
/* 3 byte bitmap decompress */ |
464 |
|
static RD_BOOL |
465 |
|
bitmap_decompress3(uint8 * output, int width, int height, uint8 * input, int size) |
466 |
|
{ |
467 |
|
uint8 *end = input + size; |
468 |
|
uint8 *prevline = NULL, *line = NULL; |
469 |
|
int opcode, count, offset, isfillormix, x = width; |
470 |
|
int lastopcode = -1, insertmix = False, bicolour = False; |
471 |
|
uint8 code; |
472 |
|
uint8 colour1[3] = {0, 0, 0}, colour2[3] = {0, 0, 0}; |
473 |
|
uint8 mixmask, mask = 0; |
474 |
|
uint8 mix[3] = {0xff, 0xff, 0xff}; |
475 |
|
int fom_mask = 0; |
476 |
|
|
477 |
|
while (input < end) |
478 |
|
{ |
479 |
|
fom_mask = 0; |
480 |
|
code = CVAL(input); |
481 |
|
opcode = code >> 4; |
482 |
|
/* Handle different opcode forms */ |
483 |
|
switch (opcode) |
484 |
|
{ |
485 |
|
case 0xc: |
486 |
|
case 0xd: |
487 |
|
case 0xe: |
488 |
|
opcode -= 6; |
489 |
|
count = code & 0xf; |
490 |
|
offset = 16; |
491 |
|
break; |
492 |
|
case 0xf: |
493 |
|
opcode = code & 0xf; |
494 |
|
if (opcode < 9) |
495 |
|
{ |
496 |
|
count = CVAL(input); |
497 |
|
count |= CVAL(input) << 8; |
498 |
|
} |
499 |
|
else |
500 |
|
{ |
501 |
|
count = (opcode < |
502 |
|
0xb) ? 8 : 1; |
503 |
|
} |
504 |
|
offset = 0; |
505 |
|
break; |
506 |
|
default: |
507 |
|
opcode >>= 1; |
508 |
|
count = code & 0x1f; |
509 |
|
offset = 32; |
510 |
|
break; |
511 |
|
} |
512 |
|
/* Handle strange cases for counts */ |
513 |
|
if (offset != 0) |
514 |
|
{ |
515 |
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
516 |
|
if (count == 0) |
517 |
|
{ |
518 |
|
if (isfillormix) |
519 |
|
count = CVAL(input) + 1; |
520 |
|
else |
521 |
|
count = CVAL(input) + offset; |
522 |
|
} |
523 |
|
else if (isfillormix) |
524 |
|
{ |
525 |
|
count <<= 3; |
526 |
|
} |
527 |
|
} |
528 |
|
/* Read preliminary data */ |
529 |
|
switch (opcode) |
530 |
|
{ |
531 |
|
case 0: /* Fill */ |
532 |
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
533 |
|
insertmix = True; |
534 |
|
break; |
535 |
|
case 8: /* Bicolour */ |
536 |
|
colour1[0] = CVAL(input); |
537 |
|
colour1[1] = CVAL(input); |
538 |
|
colour1[2] = CVAL(input); |
539 |
|
case 3: /* Colour */ |
540 |
|
colour2[0] = CVAL(input); |
541 |
|
colour2[1] = CVAL(input); |
542 |
|
colour2[2] = CVAL(input); |
543 |
|
break; |
544 |
|
case 6: /* SetMix/Mix */ |
545 |
|
case 7: /* SetMix/FillOrMix */ |
546 |
|
mix[0] = CVAL(input); |
547 |
|
mix[1] = CVAL(input); |
548 |
|
mix[2] = CVAL(input); |
549 |
|
opcode -= 5; |
550 |
|
break; |
551 |
|
case 9: /* FillOrMix_1 */ |
552 |
|
mask = 0x03; |
553 |
|
opcode = 0x02; |
554 |
|
fom_mask = 3; |
555 |
|
break; |
556 |
|
case 0x0a: /* FillOrMix_2 */ |
557 |
|
mask = 0x05; |
558 |
|
opcode = 0x02; |
559 |
|
fom_mask = 5; |
560 |
|
break; |
561 |
|
} |
562 |
|
lastopcode = opcode; |
563 |
|
mixmask = 0; |
564 |
|
/* Output body */ |
565 |
|
while (count > 0) |
566 |
|
{ |
567 |
|
if (x >= width) |
568 |
|
{ |
569 |
|
if (height <= 0) |
570 |
|
return False; |
571 |
|
x = 0; |
572 |
|
height--; |
573 |
|
prevline = line; |
574 |
|
line = output + height * (width * 3); |
575 |
|
} |
576 |
|
switch (opcode) |
577 |
|
{ |
578 |
|
case 0: /* Fill */ |
579 |
|
if (insertmix) |
580 |
|
{ |
581 |
|
if (prevline == NULL) |
582 |
|
{ |
583 |
|
line[x * 3] = mix[0]; |
584 |
|
line[x * 3 + 1] = mix[1]; |
585 |
|
line[x * 3 + 2] = mix[2]; |
586 |
|
} |
587 |
|
else |
588 |
|
{ |
589 |
|
line[x * 3] = |
590 |
|
prevline[x * 3] ^ mix[0]; |
591 |
|
line[x * 3 + 1] = |
592 |
|
prevline[x * 3 + 1] ^ mix[1]; |
593 |
|
line[x * 3 + 2] = |
594 |
|
prevline[x * 3 + 2] ^ mix[2]; |
595 |
|
} |
596 |
|
insertmix = False; |
597 |
|
count--; |
598 |
|
x++; |
599 |
|
} |
600 |
|
if (prevline == NULL) |
601 |
|
{ |
602 |
|
REPEAT |
603 |
|
( |
604 |
|
line[x * 3] = 0; |
605 |
|
line[x * 3 + 1] = 0; |
606 |
|
line[x * 3 + 2] = 0; |
607 |
|
) |
608 |
|
} |
609 |
|
else |
610 |
|
{ |
611 |
|
REPEAT |
612 |
|
( |
613 |
|
line[x * 3] = prevline[x * 3]; |
614 |
|
line[x * 3 + 1] = prevline[x * 3 + 1]; |
615 |
|
line[x * 3 + 2] = prevline[x * 3 + 2]; |
616 |
|
) |
617 |
|
} |
618 |
|
break; |
619 |
|
case 1: /* Mix */ |
620 |
|
if (prevline == NULL) |
621 |
|
{ |
622 |
|
REPEAT |
623 |
|
( |
624 |
|
line[x * 3] = mix[0]; |
625 |
|
line[x * 3 + 1] = mix[1]; |
626 |
|
line[x * 3 + 2] = mix[2]; |
627 |
|
) |
628 |
|
} |
629 |
|
else |
630 |
|
{ |
631 |
|
REPEAT |
632 |
|
( |
633 |
|
line[x * 3] = |
634 |
|
prevline[x * 3] ^ mix[0]; |
635 |
|
line[x * 3 + 1] = |
636 |
|
prevline[x * 3 + 1] ^ mix[1]; |
637 |
|
line[x * 3 + 2] = |
638 |
|
prevline[x * 3 + 2] ^ mix[2]; |
639 |
|
) |
640 |
|
} |
641 |
|
break; |
642 |
|
case 2: /* Fill or Mix */ |
643 |
|
if (prevline == NULL) |
644 |
|
{ |
645 |
|
REPEAT |
646 |
|
( |
647 |
|
MASK_UPDATE(); |
648 |
|
if (mask & mixmask) |
649 |
|
{ |
650 |
|
line[x * 3] = mix[0]; |
651 |
|
line[x * 3 + 1] = mix[1]; |
652 |
|
line[x * 3 + 2] = mix[2]; |
653 |
|
} |
654 |
|
else |
655 |
|
{ |
656 |
|
line[x * 3] = 0; |
657 |
|
line[x * 3 + 1] = 0; |
658 |
|
line[x * 3 + 2] = 0; |
659 |
|
} |
660 |
|
) |
661 |
|
} |
662 |
|
else |
663 |
|
{ |
664 |
|
REPEAT |
665 |
|
( |
666 |
|
MASK_UPDATE(); |
667 |
|
if (mask & mixmask) |
668 |
|
{ |
669 |
|
line[x * 3] = |
670 |
|
prevline[x * 3] ^ mix [0]; |
671 |
|
line[x * 3 + 1] = |
672 |
|
prevline[x * 3 + 1] ^ mix [1]; |
673 |
|
line[x * 3 + 2] = |
674 |
|
prevline[x * 3 + 2] ^ mix [2]; |
675 |
|
} |
676 |
|
else |
677 |
|
{ |
678 |
|
line[x * 3] = |
679 |
|
prevline[x * 3]; |
680 |
|
line[x * 3 + 1] = |
681 |
|
prevline[x * 3 + 1]; |
682 |
|
line[x * 3 + 2] = |
683 |
|
prevline[x * 3 + 2]; |
684 |
|
} |
685 |
|
) |
686 |
|
} |
687 |
|
break; |
688 |
|
case 3: /* Colour */ |
689 |
|
REPEAT |
690 |
|
( |
691 |
|
line[x * 3] = colour2 [0]; |
692 |
|
line[x * 3 + 1] = colour2 [1]; |
693 |
|
line[x * 3 + 2] = colour2 [2]; |
694 |
|
) |
695 |
|
break; |
696 |
|
case 4: /* Copy */ |
697 |
|
REPEAT |
698 |
|
( |
699 |
|
line[x * 3] = CVAL(input); |
700 |
|
line[x * 3 + 1] = CVAL(input); |
701 |
|
line[x * 3 + 2] = CVAL(input); |
702 |
|
) |
703 |
|
break; |
704 |
|
case 8: /* Bicolour */ |
705 |
|
REPEAT |
706 |
|
( |
707 |
|
if (bicolour) |
708 |
|
{ |
709 |
|
line[x * 3] = colour2[0]; |
710 |
|
line[x * 3 + 1] = colour2[1]; |
711 |
|
line[x * 3 + 2] = colour2[2]; |
712 |
|
bicolour = False; |
713 |
|
} |
714 |
|
else |
715 |
|
{ |
716 |
|
line[x * 3] = colour1[0]; |
717 |
|
line[x * 3 + 1] = colour1[1]; |
718 |
|
line[x * 3 + 2] = colour1[2]; |
719 |
|
bicolour = True; |
720 |
|
count++; |
721 |
|
} |
722 |
|
) |
723 |
|
break; |
724 |
|
case 0xd: /* White */ |
725 |
|
REPEAT |
726 |
|
( |
727 |
|
line[x * 3] = 0xff; |
728 |
|
line[x * 3 + 1] = 0xff; |
729 |
|
line[x * 3 + 2] = 0xff; |
730 |
|
) |
731 |
|
break; |
732 |
|
case 0xe: /* Black */ |
733 |
|
REPEAT |
734 |
|
( |
735 |
|
line[x * 3] = 0; |
736 |
|
line[x * 3 + 1] = 0; |
737 |
|
line[x * 3 + 2] = 0; |
738 |
|
) |
739 |
|
break; |
740 |
|
default: |
741 |
|
unimpl("bitmap opcode 0x%x\n", opcode); |
742 |
|
return False; |
743 |
|
} |
744 |
|
} |
745 |
|
} |
746 |
return True; |
return True; |
747 |
} |
} |
748 |
|
|
749 |
|
/* decompress a colour plane */ |
750 |
|
static int |
751 |
|
process_plane(uint8 * in, int width, int height, uint8 * out, int size) |
752 |
|
{ |
753 |
|
int indexw; |
754 |
|
int indexh; |
755 |
|
int code; |
756 |
|
int collen; |
757 |
|
int replen; |
758 |
|
int color; |
759 |
|
int x; |
760 |
|
int revcode; |
761 |
|
uint8 * last_line; |
762 |
|
uint8 * this_line; |
763 |
|
uint8 * org_in; |
764 |
|
uint8 * org_out; |
765 |
|
|
766 |
|
org_in = in; |
767 |
|
org_out = out; |
768 |
|
last_line = 0; |
769 |
|
indexh = 0; |
770 |
|
while (indexh < height) |
771 |
|
{ |
772 |
|
out = (org_out + width * height * 4) - ((indexh + 1) * width * 4); |
773 |
|
color = 0; |
774 |
|
this_line = out; |
775 |
|
indexw = 0; |
776 |
|
if (last_line == 0) |
777 |
|
{ |
778 |
|
while (indexw < width) |
779 |
|
{ |
780 |
|
code = CVAL(in); |
781 |
|
replen = code & 0xf; |
782 |
|
collen = (code >> 4) & 0xf; |
783 |
|
revcode = (replen << 4) | collen; |
784 |
|
if ((revcode <= 47) && (revcode >= 16)) |
785 |
|
{ |
786 |
|
replen = revcode; |
787 |
|
collen = 0; |
788 |
|
} |
789 |
|
while (collen > 0) |
790 |
|
{ |
791 |
|
color = CVAL(in); |
792 |
|
*out = color; |
793 |
|
out += 4; |
794 |
|
indexw++; |
795 |
|
collen--; |
796 |
|
} |
797 |
|
while (replen > 0) |
798 |
|
{ |
799 |
|
*out = color; |
800 |
|
out += 4; |
801 |
|
indexw++; |
802 |
|
replen--; |
803 |
|
} |
804 |
|
} |
805 |
|
} |
806 |
|
else |
807 |
|
{ |
808 |
|
while (indexw < width) |
809 |
|
{ |
810 |
|
code = CVAL(in); |
811 |
|
replen = code & 0xf; |
812 |
|
collen = (code >> 4) & 0xf; |
813 |
|
revcode = (replen << 4) | collen; |
814 |
|
if ((revcode <= 47) && (revcode >= 16)) |
815 |
|
{ |
816 |
|
replen = revcode; |
817 |
|
collen = 0; |
818 |
|
} |
819 |
|
while (collen > 0) |
820 |
|
{ |
821 |
|
x = CVAL(in); |
822 |
|
if (x & 1) |
823 |
|
{ |
824 |
|
x = x >> 1; |
825 |
|
x = x + 1; |
826 |
|
color = -x; |
827 |
|
} |
828 |
|
else |
829 |
|
{ |
830 |
|
x = x >> 1; |
831 |
|
color = x; |
832 |
|
} |
833 |
|
x = last_line[indexw * 4] + color; |
834 |
|
*out = x; |
835 |
|
out += 4; |
836 |
|
indexw++; |
837 |
|
collen--; |
838 |
|
} |
839 |
|
while (replen > 0) |
840 |
|
{ |
841 |
|
x = last_line[indexw * 4] + color; |
842 |
|
*out = x; |
843 |
|
out += 4; |
844 |
|
indexw++; |
845 |
|
replen--; |
846 |
|
} |
847 |
|
} |
848 |
|
} |
849 |
|
indexh++; |
850 |
|
last_line = this_line; |
851 |
|
} |
852 |
|
return (int) (in - org_in); |
853 |
|
} |
854 |
|
|
855 |
|
/* 4 byte bitmap decompress */ |
856 |
|
static RD_BOOL |
857 |
|
bitmap_decompress4(uint8 * output, int width, int height, uint8 * input, int size) |
858 |
|
{ |
859 |
|
int code; |
860 |
|
int bytes_pro; |
861 |
|
int total_pro; |
862 |
|
|
863 |
|
code = CVAL(input); |
864 |
|
if (code != 0x10) |
865 |
|
{ |
866 |
|
return False; |
867 |
|
} |
868 |
|
total_pro = 1; |
869 |
|
bytes_pro = process_plane(input, width, height, output + 3, size - total_pro); |
870 |
|
total_pro += bytes_pro; |
871 |
|
input += bytes_pro; |
872 |
|
bytes_pro = process_plane(input, width, height, output + 2, size - total_pro); |
873 |
|
total_pro += bytes_pro; |
874 |
|
input += bytes_pro; |
875 |
|
bytes_pro = process_plane(input, width, height, output + 1, size - total_pro); |
876 |
|
total_pro += bytes_pro; |
877 |
|
input += bytes_pro; |
878 |
|
bytes_pro = process_plane(input, width, height, output + 0, size - total_pro); |
879 |
|
total_pro += bytes_pro; |
880 |
|
return size == total_pro; |
881 |
|
} |
882 |
|
|
883 |
|
/* main decompress function */ |
884 |
|
RD_BOOL |
885 |
|
bitmap_decompress(uint8 * output, int width, int height, uint8 * input, int size, int Bpp) |
886 |
|
{ |
887 |
|
RD_BOOL rv = False; |
888 |
|
|
889 |
|
switch (Bpp) |
890 |
|
{ |
891 |
|
case 1: |
892 |
|
rv = bitmap_decompress1(output, width, height, input, size); |
893 |
|
break; |
894 |
|
case 2: |
895 |
|
rv = bitmap_decompress2(output, width, height, input, size); |
896 |
|
break; |
897 |
|
case 3: |
898 |
|
rv = bitmap_decompress3(output, width, height, input, size); |
899 |
|
break; |
900 |
|
case 4: |
901 |
|
rv = bitmap_decompress4(output, width, height, input, size); |
902 |
|
break; |
903 |
|
default: |
904 |
|
unimpl("Bpp %d\n", Bpp); |
905 |
|
break; |
906 |
|
} |
907 |
|
return rv; |
908 |
|
} |
909 |
|
|
910 |
|
/* *INDENT-ON* */ |