1 |
/* |
/* |
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 1999-2001 |
Copyright (C) Matthew Chapman 1999-2002 |
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 |
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/* comment out #define BITMAP_SPEED_OVER_SIZE below for one slower function */ |
24 |
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/* j@american-data.com */ |
25 |
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|
26 |
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#define BITMAP_SPEED_OVER_SIZE |
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|
28 |
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/* indent is confused by this file */ |
29 |
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/* *INDENT-OFF* */ |
30 |
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|
31 |
#include "rdesktop.h" |
#include "rdesktop.h" |
32 |
|
|
33 |
#define CVAL(p) (*(p++)) |
#define CVAL(p) (*(p++)) |
34 |
|
#define CVAL2(p) (*(((uint16*)p)++)) /* for 16 bit */ |
35 |
|
|
36 |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
#define UNROLL8(exp) { exp exp exp exp exp exp exp exp } |
37 |
|
|
40 |
while((count & ~0x7) && ((x+8) < width)) \ |
while((count & ~0x7) && ((x+8) < width)) \ |
41 |
UNROLL8( statement; count--; x++; ); \ |
UNROLL8( statement; count--; x++; ); \ |
42 |
\ |
\ |
43 |
while((count > 0) && (x < width)) { statement; count--; x++; } \ |
while((count > 0) && (x < width)) \ |
44 |
|
{ \ |
45 |
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statement; \ |
46 |
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count--; \ |
47 |
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x++; \ |
48 |
|
} \ |
49 |
} |
} |
50 |
|
|
51 |
#define MASK_UPDATE() \ |
#define MASK_UPDATE() \ |
58 |
} \ |
} \ |
59 |
} |
} |
60 |
|
|
61 |
BOOL |
#ifdef BITMAP_SPEED_OVER_SIZE |
62 |
bitmap_decompress(unsigned char *output, int width, int height, |
|
63 |
unsigned char *input, int size) |
/* 1 byte bitmap decompress */ |
64 |
|
static BOOL |
65 |
|
bitmap_decompress1(uint8 * output, int width, int height, uint8 * input, int size) |
66 |
{ |
{ |
67 |
unsigned char *end = input + size; |
uint8 *end = input + size; |
68 |
unsigned char *prevline = NULL, *line = NULL; |
uint8 *prevline = NULL, *line = NULL; |
69 |
int opcode, count, offset, isfillormix, x = width; |
int opcode, count, offset, isfillormix, x = width; |
70 |
int lastopcode = -1, insertmix = False, bicolour = False; |
int lastopcode = -1, insertmix = False, bicolour = False; |
71 |
uint8 code, colour1 = 0, colour2 = 0; |
uint8 code; |
72 |
uint8 mixmask, mask = 0, mix = 0xff; |
uint8 colour1 = 0, colour2 = 0; |
73 |
|
uint8 mixmask, mask = 0; |
74 |
|
uint8 mix = 0xff; |
75 |
|
int fom_mask = 0; |
76 |
|
|
77 |
|
while (input < end) |
78 |
|
{ |
79 |
|
fom_mask = 0; |
80 |
|
code = CVAL(input); |
81 |
|
opcode = code >> 4; |
82 |
|
/* Handle different opcode forms */ |
83 |
|
switch (opcode) |
84 |
|
{ |
85 |
|
case 0xc: |
86 |
|
case 0xd: |
87 |
|
case 0xe: |
88 |
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opcode -= 6; |
89 |
|
count = code & 0xf; |
90 |
|
offset = 16; |
91 |
|
break; |
92 |
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case 0xf: |
93 |
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opcode = code & 0xf; |
94 |
|
if (opcode < 9) |
95 |
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{ |
96 |
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count = CVAL(input); |
97 |
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count |= CVAL(input) << 8; |
98 |
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} |
99 |
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else |
100 |
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{ |
101 |
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count = (opcode < 0xb) ? 8 : 1; |
102 |
|
} |
103 |
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offset = 0; |
104 |
|
break; |
105 |
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default: |
106 |
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opcode >>= 1; |
107 |
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count = code & 0x1f; |
108 |
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offset = 32; |
109 |
|
break; |
110 |
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} |
111 |
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/* Handle strange cases for counts */ |
112 |
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if (offset != 0) |
113 |
|
{ |
114 |
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
115 |
|
if (count == 0) |
116 |
|
{ |
117 |
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if (isfillormix) |
118 |
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count = CVAL(input) + 1; |
119 |
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else |
120 |
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count = CVAL(input) + offset; |
121 |
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} |
122 |
|
else if (isfillormix) |
123 |
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{ |
124 |
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count <<= 3; |
125 |
|
} |
126 |
|
} |
127 |
|
/* Read preliminary data */ |
128 |
|
switch (opcode) |
129 |
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{ |
130 |
|
case 0: /* Fill */ |
131 |
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
132 |
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insertmix = True; |
133 |
|
break; |
134 |
|
case 8: /* Bicolour */ |
135 |
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colour1 = CVAL(input); |
136 |
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case 3: /* Colour */ |
137 |
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colour2 = CVAL(input); |
138 |
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break; |
139 |
|
case 6: /* SetMix/Mix */ |
140 |
|
case 7: /* SetMix/FillOrMix */ |
141 |
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mix = CVAL(input); |
142 |
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opcode -= 5; |
143 |
|
break; |
144 |
|
case 9: /* FillOrMix_1 */ |
145 |
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mask = 0x03; |
146 |
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opcode = 0x02; |
147 |
|
fom_mask = 3; |
148 |
|
break; |
149 |
|
case 0x0a: /* FillOrMix_2 */ |
150 |
|
mask = 0x05; |
151 |
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opcode = 0x02; |
152 |
|
fom_mask = 5; |
153 |
|
break; |
154 |
|
} |
155 |
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lastopcode = opcode; |
156 |
|
mixmask = 0; |
157 |
|
/* Output body */ |
158 |
|
while (count > 0) |
159 |
|
{ |
160 |
|
if (x >= width) |
161 |
|
{ |
162 |
|
if (height <= 0) |
163 |
|
return False; |
164 |
|
x = 0; |
165 |
|
height--; |
166 |
|
prevline = line; |
167 |
|
line = output + height * width; |
168 |
|
} |
169 |
|
switch (opcode) |
170 |
|
{ |
171 |
|
case 0: /* Fill */ |
172 |
|
if (insertmix) |
173 |
|
{ |
174 |
|
if (prevline == NULL) |
175 |
|
line[x] = mix; |
176 |
|
else |
177 |
|
line[x] = prevline[x] ^ mix; |
178 |
|
insertmix = False; |
179 |
|
count--; |
180 |
|
x++; |
181 |
|
} |
182 |
|
if (prevline == NULL) |
183 |
|
{ |
184 |
|
REPEAT(line[x] = 0) |
185 |
|
} |
186 |
|
else |
187 |
|
{ |
188 |
|
REPEAT(line[x] = prevline[x]) |
189 |
|
} |
190 |
|
break; |
191 |
|
case 1: /* Mix */ |
192 |
|
if (prevline == NULL) |
193 |
|
{ |
194 |
|
REPEAT(line[x] = mix) |
195 |
|
} |
196 |
|
else |
197 |
|
{ |
198 |
|
REPEAT(line[x] = prevline[x] ^ mix) |
199 |
|
} |
200 |
|
break; |
201 |
|
case 2: /* Fill or Mix */ |
202 |
|
if (prevline == NULL) |
203 |
|
{ |
204 |
|
REPEAT |
205 |
|
( |
206 |
|
MASK_UPDATE(); |
207 |
|
if (mask & mixmask) |
208 |
|
line[x] = mix; |
209 |
|
else |
210 |
|
line[x] = 0; |
211 |
|
) |
212 |
|
} |
213 |
|
else |
214 |
|
{ |
215 |
|
REPEAT |
216 |
|
( |
217 |
|
MASK_UPDATE(); |
218 |
|
if (mask & mixmask) |
219 |
|
line[x] = prevline[x] ^ mix; |
220 |
|
else |
221 |
|
line[x] = prevline[x]; |
222 |
|
) |
223 |
|
} |
224 |
|
break; |
225 |
|
case 3: /* Colour */ |
226 |
|
REPEAT(line[x] = colour2) |
227 |
|
break; |
228 |
|
case 4: /* Copy */ |
229 |
|
REPEAT(line[x] = CVAL(input)) |
230 |
|
break; |
231 |
|
case 8: /* Bicolour */ |
232 |
|
REPEAT |
233 |
|
( |
234 |
|
if (bicolour) |
235 |
|
{ |
236 |
|
line[x] = colour2; |
237 |
|
bicolour = False; |
238 |
|
} |
239 |
|
else |
240 |
|
{ |
241 |
|
line[x] = colour1; |
242 |
|
bicolour = True; count++; |
243 |
|
} |
244 |
|
) |
245 |
|
break; |
246 |
|
case 0xd: /* White */ |
247 |
|
REPEAT(line[x] = 0xff) |
248 |
|
break; |
249 |
|
case 0xe: /* Black */ |
250 |
|
REPEAT(line[x] = 0) |
251 |
|
break; |
252 |
|
default: |
253 |
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unimpl("bitmap opcode 0x%x\n", opcode); |
254 |
|
return False; |
255 |
|
} |
256 |
|
} |
257 |
|
} |
258 |
|
return True; |
259 |
|
} |
260 |
|
|
261 |
|
/* 2 byte bitmap decompress */ |
262 |
|
static BOOL |
263 |
|
bitmap_decompress2(uint8 * output, int width, int height, uint8 * input, int size) |
264 |
|
{ |
265 |
|
uint8 *end = input + size; |
266 |
|
uint16 *prevline = NULL, *line = NULL; |
267 |
|
int opcode, count, offset, isfillormix, x = width; |
268 |
|
int lastopcode = -1, insertmix = False, bicolour = False; |
269 |
|
uint8 code; |
270 |
|
uint16 colour1 = 0, colour2 = 0; |
271 |
|
uint8 mixmask, mask = 0; |
272 |
|
uint16 mix = 0xffff; |
273 |
|
int fom_mask = 0; |
274 |
|
|
275 |
|
while (input < end) |
276 |
|
{ |
277 |
|
fom_mask = 0; |
278 |
|
code = CVAL(input); |
279 |
|
opcode = code >> 4; |
280 |
|
/* Handle different opcode forms */ |
281 |
|
switch (opcode) |
282 |
|
{ |
283 |
|
case 0xc: |
284 |
|
case 0xd: |
285 |
|
case 0xe: |
286 |
|
opcode -= 6; |
287 |
|
count = code & 0xf; |
288 |
|
offset = 16; |
289 |
|
break; |
290 |
|
case 0xf: |
291 |
|
opcode = code & 0xf; |
292 |
|
if (opcode < 9) |
293 |
|
{ |
294 |
|
count = CVAL(input); |
295 |
|
count |= CVAL(input) << 8; |
296 |
|
} |
297 |
|
else |
298 |
|
{ |
299 |
|
count = (opcode < 0xb) ? 8 : 1; |
300 |
|
} |
301 |
|
offset = 0; |
302 |
|
break; |
303 |
|
default: |
304 |
|
opcode >>= 1; |
305 |
|
count = code & 0x1f; |
306 |
|
offset = 32; |
307 |
|
break; |
308 |
|
} |
309 |
|
/* Handle strange cases for counts */ |
310 |
|
if (offset != 0) |
311 |
|
{ |
312 |
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
313 |
|
if (count == 0) |
314 |
|
{ |
315 |
|
if (isfillormix) |
316 |
|
count = CVAL(input) + 1; |
317 |
|
else |
318 |
|
count = CVAL(input) + offset; |
319 |
|
} |
320 |
|
else if (isfillormix) |
321 |
|
{ |
322 |
|
count <<= 3; |
323 |
|
} |
324 |
|
} |
325 |
|
/* Read preliminary data */ |
326 |
|
switch (opcode) |
327 |
|
{ |
328 |
|
case 0: /* Fill */ |
329 |
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
330 |
|
insertmix = True; |
331 |
|
break; |
332 |
|
case 8: /* Bicolour */ |
333 |
|
#ifdef NEED_ALIGNMENT |
334 |
|
memcpy(&colour1,&CVAL2(input),2); |
335 |
|
#else |
336 |
|
colour1 = CVAL2(input); |
337 |
|
#endif |
338 |
|
case 3: /* Colour */ |
339 |
|
#ifdef NEED_ALIGNMENT |
340 |
|
memcpy(&colour2,&CVAL2(input),2); |
341 |
|
#else |
342 |
|
colour2 = CVAL2(input); |
343 |
|
#endif |
344 |
|
break; |
345 |
|
case 6: /* SetMix/Mix */ |
346 |
|
case 7: /* SetMix/FillOrMix */ |
347 |
|
#ifdef NEED_ALIGNMENT |
348 |
|
memcpy(&mix,&CVAL2(input),2); |
349 |
|
#else |
350 |
|
mix = CVAL2(input); |
351 |
|
#endif |
352 |
|
opcode -= 5; |
353 |
|
break; |
354 |
|
case 9: /* FillOrMix_1 */ |
355 |
|
mask = 0x03; |
356 |
|
opcode = 0x02; |
357 |
|
fom_mask = 3; |
358 |
|
break; |
359 |
|
case 0x0a: /* FillOrMix_2 */ |
360 |
|
mask = 0x05; |
361 |
|
opcode = 0x02; |
362 |
|
fom_mask = 5; |
363 |
|
break; |
364 |
|
} |
365 |
|
lastopcode = opcode; |
366 |
|
mixmask = 0; |
367 |
|
/* Output body */ |
368 |
|
while (count > 0) |
369 |
|
{ |
370 |
|
if (x >= width) |
371 |
|
{ |
372 |
|
if (height <= 0) |
373 |
|
return False; |
374 |
|
x = 0; |
375 |
|
height--; |
376 |
|
prevline = line; |
377 |
|
line = ((uint16 *) output) + height * width; |
378 |
|
} |
379 |
|
switch (opcode) |
380 |
|
{ |
381 |
|
case 0: /* Fill */ |
382 |
|
if (insertmix) |
383 |
|
{ |
384 |
|
if (prevline == NULL) |
385 |
|
line[x] = mix; |
386 |
|
else |
387 |
|
line[x] = prevline[x] ^ mix; |
388 |
|
insertmix = False; |
389 |
|
count--; |
390 |
|
x++; |
391 |
|
} |
392 |
|
if (prevline == NULL) |
393 |
|
{ |
394 |
|
REPEAT(line[x] = 0) |
395 |
|
} |
396 |
|
else |
397 |
|
{ |
398 |
|
REPEAT(line[x] = prevline[x]) |
399 |
|
} |
400 |
|
break; |
401 |
|
case 1: /* Mix */ |
402 |
|
if (prevline == NULL) |
403 |
|
{ |
404 |
|
REPEAT(line[x] = mix) |
405 |
|
} |
406 |
|
else |
407 |
|
{ |
408 |
|
REPEAT(line[x] = prevline[x] ^ mix) |
409 |
|
} |
410 |
|
break; |
411 |
|
case 2: /* Fill or Mix */ |
412 |
|
if (prevline == NULL) |
413 |
|
{ |
414 |
|
REPEAT |
415 |
|
( |
416 |
|
MASK_UPDATE(); |
417 |
|
if (mask & mixmask) |
418 |
|
line[x] = mix; |
419 |
|
else |
420 |
|
line[x] = 0; |
421 |
|
) |
422 |
|
} |
423 |
|
else |
424 |
|
{ |
425 |
|
REPEAT |
426 |
|
( |
427 |
|
MASK_UPDATE(); |
428 |
|
if (mask & mixmask) |
429 |
|
line[x] = prevline[x] ^ mix; |
430 |
|
else |
431 |
|
line[x] = prevline[x]; |
432 |
|
) |
433 |
|
} |
434 |
|
break; |
435 |
|
case 3: /* Colour */ |
436 |
|
REPEAT(line[x] = colour2) |
437 |
|
break; |
438 |
|
case 4: /* Copy */ |
439 |
|
#ifdef NEED_ALIGNMENT |
440 |
|
REPEAT(memcpy(&line[x],&CVAL2(input),2)) |
441 |
|
#else |
442 |
|
REPEAT(line[x] = CVAL2(input)) |
443 |
|
#endif |
444 |
|
break; |
445 |
|
case 8: /* Bicolour */ |
446 |
|
REPEAT |
447 |
|
( |
448 |
|
if (bicolour) |
449 |
|
{ |
450 |
|
line[x] = colour2; |
451 |
|
bicolour = False; |
452 |
|
} |
453 |
|
else |
454 |
|
{ |
455 |
|
line[x] = colour1; |
456 |
|
bicolour = True; |
457 |
|
count++; |
458 |
|
} |
459 |
|
) |
460 |
|
break; |
461 |
|
case 0xd: /* White */ |
462 |
|
REPEAT(line[x] = 0xffff) |
463 |
|
break; |
464 |
|
case 0xe: /* Black */ |
465 |
|
REPEAT(line[x] = 0) |
466 |
|
break; |
467 |
|
default: |
468 |
|
unimpl("bitmap opcode 0x%x\n", opcode); |
469 |
|
return False; |
470 |
|
} |
471 |
|
} |
472 |
|
} |
473 |
|
return True; |
474 |
|
} |
475 |
|
|
476 |
|
/* 3 byte bitmap decompress */ |
477 |
|
static BOOL |
478 |
|
bitmap_decompress3(uint8 * output, int width, int height, uint8 * input, int size) |
479 |
|
{ |
480 |
|
uint8 *end = input + size; |
481 |
|
uint8 *prevline = NULL, *line = NULL; |
482 |
|
int opcode, count, offset, isfillormix, x = width; |
483 |
|
int lastopcode = -1, insertmix = False, bicolour = False; |
484 |
|
uint8 code; |
485 |
|
uint8 colour1[3] = {0, 0, 0}, colour2[3] = {0, 0, 0}; |
486 |
|
uint8 mixmask, mask = 0; |
487 |
|
uint8 mix[3] = {0xff, 0xff, 0xff}; |
488 |
|
int fom_mask = 0; |
489 |
|
|
490 |
|
while (input < end) |
491 |
|
{ |
492 |
|
fom_mask = 0; |
493 |
|
code = CVAL(input); |
494 |
|
opcode = code >> 4; |
495 |
|
/* Handle different opcode forms */ |
496 |
|
switch (opcode) |
497 |
|
{ |
498 |
|
case 0xc: |
499 |
|
case 0xd: |
500 |
|
case 0xe: |
501 |
|
opcode -= 6; |
502 |
|
count = code & 0xf; |
503 |
|
offset = 16; |
504 |
|
break; |
505 |
|
case 0xf: |
506 |
|
opcode = code & 0xf; |
507 |
|
if (opcode < 9) |
508 |
|
{ |
509 |
|
count = CVAL(input); |
510 |
|
count |= CVAL(input) << 8; |
511 |
|
} |
512 |
|
else |
513 |
|
{ |
514 |
|
count = (opcode < |
515 |
|
0xb) ? 8 : 1; |
516 |
|
} |
517 |
|
offset = 0; |
518 |
|
break; |
519 |
|
default: |
520 |
|
opcode >>= 1; |
521 |
|
count = code & 0x1f; |
522 |
|
offset = 32; |
523 |
|
break; |
524 |
|
} |
525 |
|
/* Handle strange cases for counts */ |
526 |
|
if (offset != 0) |
527 |
|
{ |
528 |
|
isfillormix = ((opcode == 2) || (opcode == 7)); |
529 |
|
if (count == 0) |
530 |
|
{ |
531 |
|
if (isfillormix) |
532 |
|
count = CVAL(input) + 1; |
533 |
|
else |
534 |
|
count = CVAL(input) + offset; |
535 |
|
} |
536 |
|
else if (isfillormix) |
537 |
|
{ |
538 |
|
count <<= 3; |
539 |
|
} |
540 |
|
} |
541 |
|
/* Read preliminary data */ |
542 |
|
switch (opcode) |
543 |
|
{ |
544 |
|
case 0: /* Fill */ |
545 |
|
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
546 |
|
insertmix = True; |
547 |
|
break; |
548 |
|
case 8: /* Bicolour */ |
549 |
|
colour1[0] = CVAL(input); |
550 |
|
colour1[1] = CVAL(input); |
551 |
|
colour1[2] = CVAL(input); |
552 |
|
case 3: /* Colour */ |
553 |
|
colour2[0] = CVAL(input); |
554 |
|
colour2[1] = CVAL(input); |
555 |
|
colour2[2] = CVAL(input); |
556 |
|
break; |
557 |
|
case 6: /* SetMix/Mix */ |
558 |
|
case 7: /* SetMix/FillOrMix */ |
559 |
|
mix[0] = CVAL(input); |
560 |
|
mix[1] = CVAL(input); |
561 |
|
mix[2] = CVAL(input); |
562 |
|
opcode -= 5; |
563 |
|
break; |
564 |
|
case 9: /* FillOrMix_1 */ |
565 |
|
mask = 0x03; |
566 |
|
opcode = 0x02; |
567 |
|
fom_mask = 3; |
568 |
|
break; |
569 |
|
case 0x0a: /* FillOrMix_2 */ |
570 |
|
mask = 0x05; |
571 |
|
opcode = 0x02; |
572 |
|
fom_mask = 5; |
573 |
|
break; |
574 |
|
} |
575 |
|
lastopcode = opcode; |
576 |
|
mixmask = 0; |
577 |
|
/* Output body */ |
578 |
|
while (count > 0) |
579 |
|
{ |
580 |
|
if (x >= width) |
581 |
|
{ |
582 |
|
if (height <= 0) |
583 |
|
return False; |
584 |
|
x = 0; |
585 |
|
height--; |
586 |
|
prevline = line; |
587 |
|
line = output + height * (width * 3); |
588 |
|
} |
589 |
|
switch (opcode) |
590 |
|
{ |
591 |
|
case 0: /* Fill */ |
592 |
|
if (insertmix) |
593 |
|
{ |
594 |
|
if (prevline == NULL) |
595 |
|
{ |
596 |
|
line[x * 3] = mix[0]; |
597 |
|
line[x * 3 + 1] = mix[1]; |
598 |
|
line[x * 3 + 2] = mix[2]; |
599 |
|
} |
600 |
|
else |
601 |
|
{ |
602 |
|
line[x * 3] = |
603 |
|
prevline[x * 3] ^ mix[0]; |
604 |
|
line[x * 3 + 1] = |
605 |
|
prevline[x * 3 + 1] ^ mix[1]; |
606 |
|
line[x * 3 + 2] = |
607 |
|
prevline[x * 3 + 2] ^ mix[2]; |
608 |
|
} |
609 |
|
insertmix = False; |
610 |
|
count--; |
611 |
|
x++; |
612 |
|
} |
613 |
|
if (prevline == NULL) |
614 |
|
{ |
615 |
|
REPEAT |
616 |
|
( |
617 |
|
line[x * 3] = 0; |
618 |
|
line[x * 3 + 1] = 0; |
619 |
|
line[x * 3 + 2] = 0; |
620 |
|
) |
621 |
|
} |
622 |
|
else |
623 |
|
{ |
624 |
|
REPEAT |
625 |
|
( |
626 |
|
line[x * 3] = prevline[x * 3]; |
627 |
|
line[x * 3 + 1] = prevline[x * 3 + 1]; |
628 |
|
line[x * 3 + 2] = prevline[x * 3 + 2]; |
629 |
|
) |
630 |
|
} |
631 |
|
break; |
632 |
|
case 1: /* Mix */ |
633 |
|
if (prevline == NULL) |
634 |
|
{ |
635 |
|
REPEAT |
636 |
|
( |
637 |
|
line[x * 3] = mix[0]; |
638 |
|
line[x * 3 + 1] = mix[1]; |
639 |
|
line[x * 3 + 2] = mix[2]; |
640 |
|
) |
641 |
|
} |
642 |
|
else |
643 |
|
{ |
644 |
|
REPEAT |
645 |
|
( |
646 |
|
line[x * 3] = |
647 |
|
prevline[x * 3] ^ mix[0]; |
648 |
|
line[x * 3 + 1] = |
649 |
|
prevline[x * 3 + 1] ^ mix[1]; |
650 |
|
line[x * 3 + 2] = |
651 |
|
prevline[x * 3 + 2] ^ mix[2]; |
652 |
|
) |
653 |
|
} |
654 |
|
break; |
655 |
|
case 2: /* Fill or Mix */ |
656 |
|
if (prevline == NULL) |
657 |
|
{ |
658 |
|
REPEAT |
659 |
|
( |
660 |
|
MASK_UPDATE(); |
661 |
|
if (mask & mixmask) |
662 |
|
{ |
663 |
|
line[x * 3] = mix[0]; |
664 |
|
line[x * 3 + 1] = mix[1]; |
665 |
|
line[x * 3 + 2] = mix[2]; |
666 |
|
} |
667 |
|
else |
668 |
|
{ |
669 |
|
line[x * 3] = 0; |
670 |
|
line[x * 3 + 1] = 0; |
671 |
|
line[x * 3 + 2] = 0; |
672 |
|
} |
673 |
|
) |
674 |
|
} |
675 |
|
else |
676 |
|
{ |
677 |
|
REPEAT |
678 |
|
( |
679 |
|
MASK_UPDATE(); |
680 |
|
if (mask & mixmask) |
681 |
|
{ |
682 |
|
line[x * 3] = |
683 |
|
prevline[x * 3] ^ mix [0]; |
684 |
|
line[x * 3 + 1] = |
685 |
|
prevline[x * 3 + 1] ^ mix [1]; |
686 |
|
line[x * 3 + 2] = |
687 |
|
prevline[x * 3 + 2] ^ mix [2]; |
688 |
|
} |
689 |
|
else |
690 |
|
{ |
691 |
|
line[x * 3] = |
692 |
|
prevline[x * 3]; |
693 |
|
line[x * 3 + 1] = |
694 |
|
prevline[x * 3 + 1]; |
695 |
|
line[x * 3 + 2] = |
696 |
|
prevline[x * 3 + 2]; |
697 |
|
} |
698 |
|
) |
699 |
|
} |
700 |
|
break; |
701 |
|
case 3: /* Colour */ |
702 |
|
REPEAT |
703 |
|
( |
704 |
|
line[x * 3] = colour2 [0]; |
705 |
|
line[x * 3 + 1] = colour2 [1]; |
706 |
|
line[x * 3 + 2] = colour2 [2]; |
707 |
|
) |
708 |
|
break; |
709 |
|
case 4: /* Copy */ |
710 |
|
REPEAT |
711 |
|
( |
712 |
|
line[x * 3] = CVAL(input); |
713 |
|
line[x * 3 + 1] = CVAL(input); |
714 |
|
line[x * 3 + 2] = CVAL(input); |
715 |
|
) |
716 |
|
break; |
717 |
|
case 8: /* Bicolour */ |
718 |
|
REPEAT |
719 |
|
( |
720 |
|
if (bicolour) |
721 |
|
{ |
722 |
|
line[x * 3] = colour2[0]; |
723 |
|
line[x * 3 + 1] = colour2[1]; |
724 |
|
line[x * 3 + 2] = colour2[2]; |
725 |
|
bicolour = False; |
726 |
|
} |
727 |
|
else |
728 |
|
{ |
729 |
|
line[x * 3] = colour1[0]; |
730 |
|
line[x * 3 + 1] = colour1[1]; |
731 |
|
line[x * 3 + 2] = colour1[2]; |
732 |
|
bicolour = True; |
733 |
|
count++; |
734 |
|
} |
735 |
|
) |
736 |
|
break; |
737 |
|
case 0xd: /* White */ |
738 |
|
REPEAT |
739 |
|
( |
740 |
|
line[x * 3] = 0xff; |
741 |
|
line[x * 3 + 1] = 0xff; |
742 |
|
line[x * 3 + 2] = 0xff; |
743 |
|
) |
744 |
|
break; |
745 |
|
case 0xe: /* Black */ |
746 |
|
REPEAT |
747 |
|
( |
748 |
|
line[x * 3] = 0; |
749 |
|
line[x * 3 + 1] = 0; |
750 |
|
line[x * 3 + 2] = 0; |
751 |
|
) |
752 |
|
break; |
753 |
|
default: |
754 |
|
unimpl("bitmap opcode 0x%x\n", opcode); |
755 |
|
return False; |
756 |
|
} |
757 |
|
} |
758 |
|
} |
759 |
|
return True; |
760 |
|
} |
761 |
|
|
762 |
|
#else |
763 |
|
|
764 |
|
static uint32 |
765 |
|
cvalx(uint8 **input, int Bpp) |
766 |
|
{ |
767 |
|
uint32 rv = 0; |
768 |
|
memcpy(&rv, *input, Bpp); |
769 |
|
*input += Bpp; |
770 |
|
return rv; |
771 |
|
} |
772 |
|
|
773 |
|
static void |
774 |
|
setli(uint8 *input, int offset, uint32 value, int Bpp) |
775 |
|
{ |
776 |
|
input += offset * Bpp; |
777 |
|
memcpy(input, &value, Bpp); |
778 |
|
} |
779 |
|
|
780 |
|
static uint32 |
781 |
|
getli(uint8 *input, int offset, int Bpp) |
782 |
|
{ |
783 |
|
uint32 rv = 0; |
784 |
|
input += offset * Bpp; |
785 |
|
memcpy(&rv, input, Bpp); |
786 |
|
return rv; |
787 |
|
} |
788 |
|
|
789 |
|
static BOOL |
790 |
|
bitmap_decompressx(uint8 *output, int width, int height, uint8 *input, int size, int Bpp) |
791 |
|
{ |
792 |
|
uint8 *end = input + size; |
793 |
|
uint8 *prevline = NULL, *line = NULL; |
794 |
|
int opcode, count, offset, isfillormix, x = width; |
795 |
|
int lastopcode = -1, insertmix = False, bicolour = False; |
796 |
|
uint8 code; |
797 |
|
uint32 colour1 = 0, colour2 = 0; |
798 |
|
uint8 mixmask, mask = 0; |
799 |
|
uint32 mix = 0xffffffff; |
800 |
int fom_mask = 0; |
int fom_mask = 0; |
801 |
|
|
802 |
while (input < end) |
while (input < end) |
859 |
switch (opcode) |
switch (opcode) |
860 |
{ |
{ |
861 |
case 0: /* Fill */ |
case 0: /* Fill */ |
862 |
if ((lastopcode == opcode) |
if ((lastopcode == opcode) && !((x == width) && (prevline == NULL))) |
|
&& !((x == width) && (prevline == NULL))) |
|
863 |
insertmix = True; |
insertmix = True; |
864 |
break; |
break; |
865 |
case 8: /* Bicolour */ |
case 8: /* Bicolour */ |
866 |
colour1 = CVAL(input); |
colour1 = cvalx(&input, Bpp); |
867 |
case 3: /* Colour */ |
case 3: /* Colour */ |
868 |
colour2 = CVAL(input); |
colour2 = cvalx(&input, Bpp); |
869 |
break; |
break; |
870 |
case 6: /* SetMix/Mix */ |
case 6: /* SetMix/Mix */ |
871 |
case 7: /* SetMix/FillOrMix */ |
case 7: /* SetMix/FillOrMix */ |
872 |
mix = CVAL(input); |
mix = cvalx(&input, Bpp); |
873 |
opcode -= 5; |
opcode -= 5; |
874 |
break; |
break; |
875 |
case 9: /* FillOrMix_1 */ |
case 9: /* FillOrMix_1 */ |
900 |
height--; |
height--; |
901 |
|
|
902 |
prevline = line; |
prevline = line; |
903 |
line = output + height * width; |
line = output + height * width * Bpp; |
904 |
} |
} |
905 |
|
|
906 |
switch (opcode) |
switch (opcode) |
909 |
if (insertmix) |
if (insertmix) |
910 |
{ |
{ |
911 |
if (prevline == NULL) |
if (prevline == NULL) |
912 |
line[x] = mix; |
setli(line, x, mix, Bpp); |
913 |
else |
else |
914 |
line[x] = |
setli(line, x, |
915 |
prevline[x] ^ |
getli(prevline, x, Bpp) ^ mix, Bpp); |
|
mix; |
|
916 |
|
|
917 |
insertmix = False; |
insertmix = False; |
918 |
count--; |
count--; |
921 |
|
|
922 |
if (prevline == NULL) |
if (prevline == NULL) |
923 |
{ |
{ |
924 |
REPEAT(line[x] = 0); |
REPEAT(setli(line, x, 0, Bpp))} |
|
} |
|
925 |
else |
else |
926 |
{ |
{ |
927 |
REPEAT(line[x] = prevline[x]); |
REPEAT(setli |
928 |
|
(line, x, getli(prevline, x, Bpp), Bpp)); |
929 |
} |
} |
930 |
break; |
break; |
931 |
|
|
932 |
case 1: /* Mix */ |
case 1: /* Mix */ |
933 |
if (prevline == NULL) |
if (prevline == NULL) |
934 |
{ |
{ |
935 |
REPEAT(line[x] = mix); |
REPEAT(setli(line, x, mix, Bpp)); |
936 |
} |
} |
937 |
else |
else |
938 |
{ |
{ |
939 |
REPEAT(line[x] = |
REPEAT(setli |
940 |
prevline[x] ^ mix); |
(line, x, getli(prevline, x, Bpp) ^ mix, |
941 |
|
Bpp)); |
942 |
} |
} |
943 |
break; |
break; |
944 |
|
|
946 |
if (prevline == NULL) |
if (prevline == NULL) |
947 |
{ |
{ |
948 |
REPEAT(MASK_UPDATE(); |
REPEAT(MASK_UPDATE(); |
949 |
if (mask & mixmask) |
if (mask & mixmask) setli(line, x, mix, Bpp); |
|
line[x] = mix; |
|
950 |
else |
else |
951 |
line[x] = 0;); |
setli(line, x, 0, Bpp);); |
952 |
} |
} |
953 |
else |
else |
954 |
{ |
{ |
955 |
REPEAT(MASK_UPDATE(); |
REPEAT(MASK_UPDATE(); |
956 |
if (mask & mixmask) |
if (mask & mixmask) |
957 |
line[x] = |
setli(line, x, getli(prevline, x, Bpp) ^ mix, |
958 |
prevline[x] ^ mix; |
Bpp); |
959 |
else |
else |
960 |
line[x] = |
setli(line, x, getli(prevline, x, Bpp), |
961 |
prevline[x];); |
Bpp);); |
962 |
} |
} |
963 |
break; |
break; |
964 |
|
|
965 |
case 3: /* Colour */ |
case 3: /* Colour */ |
966 |
REPEAT(line[x] = colour2); |
REPEAT(setli(line, x, colour2, Bpp)); |
967 |
break; |
break; |
968 |
|
|
969 |
case 4: /* Copy */ |
case 4: /* Copy */ |
970 |
REPEAT(line[x] = CVAL(input)); |
REPEAT(setli(line, x, cvalx(&input, Bpp), Bpp)); |
971 |
break; |
break; |
972 |
|
|
973 |
case 8: /* Bicolour */ |
case 8: /* Bicolour */ |
974 |
REPEAT(if (bicolour) |
REPEAT(if (bicolour) |
975 |
{ |
{ |
976 |
line[x] = colour2; |
setli(line, x, colour2, Bpp); bicolour = False;} |
|
bicolour = False;} |
|
977 |
else |
else |
978 |
{ |
{ |
979 |
line[x] = colour1; |
setli(line, x, colour1, Bpp); bicolour = True; |
980 |
bicolour = True; count++;} |
count++;} |
981 |
); |
); |
982 |
break; |
break; |
983 |
|
|
984 |
case 0xd: /* White */ |
case 0xd: /* White */ |
985 |
REPEAT(line[x] = 0xff); |
REPEAT(setli(line, x, 0xffffffff, Bpp)); |
986 |
break; |
break; |
987 |
|
|
988 |
case 0xe: /* Black */ |
case 0xe: /* Black */ |
989 |
REPEAT(line[x] = 0x00); |
REPEAT(setli(line, x, 0, Bpp)); |
990 |
break; |
break; |
991 |
|
|
992 |
default: |
default: |
993 |
unimpl("bitmap opcode 0x%x\n", |
unimpl("bitmap opcode 0x%x\n", opcode); |
|
opcode); |
|
994 |
return False; |
return False; |
995 |
} |
} |
996 |
} |
} |
998 |
|
|
999 |
return True; |
return True; |
1000 |
} |
} |
1001 |
|
|
1002 |
|
#endif |
1003 |
|
|
1004 |
|
/* main decompress function */ |
1005 |
|
BOOL |
1006 |
|
bitmap_decompress(uint8 * output, int width, int height, uint8 * input, int size, int Bpp) |
1007 |
|
{ |
1008 |
|
#ifdef BITMAP_SPEED_OVER_SIZE |
1009 |
|
BOOL rv = False; |
1010 |
|
switch (Bpp) |
1011 |
|
{ |
1012 |
|
case 1: |
1013 |
|
rv = bitmap_decompress1(output, width, height, input, size); |
1014 |
|
break; |
1015 |
|
case 2: |
1016 |
|
rv = bitmap_decompress2(output, width, height, input, size); |
1017 |
|
break; |
1018 |
|
case 3: |
1019 |
|
rv = bitmap_decompress3(output, width, height, input, size); |
1020 |
|
break; |
1021 |
|
} |
1022 |
|
#else |
1023 |
|
BOOL rv; |
1024 |
|
rv = bitmap_decompressx(output, width, height, input, size, Bpp); |
1025 |
|
#endif |
1026 |
|
return rv; |
1027 |
|
} |
1028 |
|
|
1029 |
|
/* *INDENT-ON* */ |