1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
|
/* ScummVM - Scumm Interpreter
* Copyright (C) 2004 Ivan Dubrov
* Copyright (C) 2004-2005 The ScummVM project
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
* You should have received a copy of the GNU General Public License
* aint32 with this program; if not, write to the Free Software
* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*
* $Header$
*
*/
#include "gob/gob.h"
#include "gob/global.h"
#include "gob/video.h"
#include "gob/debug.h"
#include "gob/dataio.h"
#include "gob/driver_vga.h"
namespace Gob {
VideoDriver *_videoDriver;
/* NOT IMPLEMENTED */
//XXX: Use this function to update the screen for now.
// This should be moved to a better location later on.
void vid_waitRetrace(int16) {
if (pPrimarySurfDesc) {
g_system->copyRectToScreen(pPrimarySurfDesc->vidPtr, 320, 0, 0, 320, 200);
g_system->updateScreen();
}
}
char vid_initDriver(int16 vidMode) {
warning("STUB: vid_initDriver");
// FIXME: Finish all this stuff :)
g_system->initSize(320, 200);
_videoDriver = new VGAVideoDriver();
return 1;
}
void vid_freeDriver() {
delete _videoDriver;
warning("STUB: vid_freeDriver");
}
int32 vid_getRectSize(int16 width, int16 height, int16 flag, int16 mode) {
int32 size;
if ((mode & 0x7f) != 0x13)
log_write
("vid_getRectSize: Warning! Video mode %d is not fully supported!\n",
mode & 0x7f);
switch (mode & 0x7f) {
case 5:
case 7:
size = ((int32)((width + 3) / 4)) * height * (flag + 1);
break;
case 0x13:
size = (int32)width *height;
break;
case 0x14:
case 0x15:
case 0x16:
size = ((int32)((width + 3) / 4)) * height * 4;
break;
default:
size = ((int32)((width + 7) / 8)) * height * (flag + 4);
break;
}
return size;
}
SurfaceDesc *vid_initSurfDesc(int16 vidMode, int16 width, int16 height, int16 flags) {
char flagsAnd2;
byte *vidMem;
int32 sprSize;
int16 someFlags = 1;
SurfaceDesc *descPtr;
debug(0, "stub: vid_initSurfDesc()");
if (flags != PRIMARY_SURFACE)
sprAllocated++;
if (flags & RETURN_PRIMARY)
return pPrimarySurfDesc;
if (vidMode != 0x13)
error("vid_initSurfDesc: Only VGA 0x13 mode is supported!");
if ((flags & PRIMARY_SURFACE) == 0)
vidMode += 0x80;
if (flags & 2)
flagsAnd2 = 1;
else
flagsAnd2 = 0;
if (flags & PRIMARY_SURFACE) {
vidMem = 0;
primaryWidth = width;
mouseMaxCol = width;
primaryHeight = height;
mouseMaxRow = height;
sprSize = 0;
} else {
vidMem = 0;
sprSize = vid_getRectSize(width, height, flagsAnd2, vidMode);
if (flagsAnd2)
someFlags += 0x80;
}
if (flags & PRIMARY_SURFACE) {
descPtr = pPrimarySurfDesc;
vidMem = (byte *)malloc(320 * 200);
} else {
if (flags & DISABLE_SPR_ALLOC)
descPtr = (SurfaceDesc *)malloc(sizeof(SurfaceDesc));
else
descPtr = (SurfaceDesc *)malloc(sizeof(SurfaceDesc) + sprSize);
}
if (descPtr == 0)
return 0;
descPtr->width = width;
descPtr->height = height;
descPtr->flag = someFlags;
descPtr->vidMode = vidMode;
if (vidMem == 0)
vidMem = ((byte *)descPtr) + sizeof(SurfaceDesc);
descPtr->vidPtr = vidMem;
descPtr->reserved1 = 0;
descPtr->reserved2 = 0;
return descPtr;
}
void vid_freeSurfDesc(SurfaceDesc * surfDesc) {
sprAllocated--;
if (surfDesc != pPrimarySurfDesc)
free(surfDesc);
else
free(surfDesc->vidPtr);
}
int16 vid_clampValue(int16 val, int16 max) {
if (val >= max)
val = max - 1;
if (val < 0)
val = 0;
return val;
}
void vid_drawSprite(SurfaceDesc *source, SurfaceDesc *dest,
int16 left, int16 top, int16 right, int16 bottom, int16 x, int16 y, int16 transp) {
int16 temp;
int16 destRight;
int16 destBottom;
if (doRangeClamp) {
if (left > right) {
temp = left;
left = right;
right = temp;
}
if (top > bottom) {
temp = top;
top = bottom;
bottom = temp;
}
if (right < 0)
return;
if (bottom < 0)
return;
if (left >= source->width)
return;
if (top >= source->height)
return;
if (left < 0) {
x -= left;
left = 0;
}
if (top < 0) {
y -= top;
top = 0;
}
right = vid_clampValue(right, source->width);
bottom = vid_clampValue(bottom, source->height);
if (right - left >= source->width)
right = left + source->width - 1;
if (bottom - top >= source->height)
bottom = top + source->height - 1;
if (x < 0) {
left -= x;
x = 0;
}
if (y < 0) {
top -= y;
y = 0;
}
if (left > right)
return;
if (top > bottom)
return;
if (x >= dest->width)
return;
if (y >= dest->height)
return;
destRight = x + right - left;
destBottom = y + bottom - top;
if (destRight >= dest->width)
right -= destRight - dest->width + 1;
if (destBottom >= dest->height)
bottom -= destBottom - dest->height + 1;
}
// pDrawSprite(source, dest, left, top, right, bottom, x, y, transp);
_videoDriver->drawSprite(source, dest, left, top, right, bottom, x, y, transp);
}
void vid_fillRect(SurfaceDesc *dest, int16 left, int16 top, int16 right, int16 bottom,
int16 color) {
int16 temp;
if (doRangeClamp) {
if (left > right) {
temp = left;
left = right;
right = temp;
}
if (top > bottom) {
temp = top;
top = bottom;
bottom = temp;
}
if (right < 0)
return;
if (bottom < 0)
return;
if (left >= dest->width)
return;
if (top >= dest->height)
return;
left = vid_clampValue(left, dest->width);
top = vid_clampValue(top, dest->height);
right = vid_clampValue(right, dest->width);
bottom = vid_clampValue(bottom, dest->height);
}
// pFillRect(dest, left, top, right, bottom, color);
_videoDriver->fillRect(dest, left, top, right, bottom, color);
}
void vid_drawLine(SurfaceDesc *dest, int16 x0, int16 y0, int16 x1, int16 y1, int16 color) {
if (x0 == x1 || y0 == y1) {
vid_fillRect(dest, x0, y0, x1, y1, color);
return;
}
// pDrawLine(dest, x0, y0, x1, y1, color);
_videoDriver->drawLine(dest, x0, y0, x1, y1, color);
}
void vid_putPixel(int16 x, int16 y, int16 color, SurfaceDesc *dest) {
if (x < 0 || y < 0 || x >= dest->width || y >= dest->height)
return;
// pPutPixel(x, y, color, dest);
_videoDriver->putPixel(x, y, color, dest);
}
void vid_drawLetter(char item, int16 x, int16 y, FontDesc *fontDesc, int16 color1,
int16 color2, int16 transp, SurfaceDesc * dest) {
// pDrawLetter(item, x, y, fontDesc, color1, color2, transp, dest);
_videoDriver->drawLetter(item, x, y, fontDesc, color1, color2, transp, dest);
}
void vid_clearSurf(SurfaceDesc *dest) {
vid_fillRect(dest, 0, 0, dest->width - 1, dest->height - 1, 0);
}
void vid_drawPackedSprite(byte *sprBuf, int16 width, int16 height, int16 x, int16 y,
int16 transp, SurfaceDesc *dest) {
if (vid_spriteUncompressor(sprBuf, width, height, x, y, transp, dest))
return;
if ((dest->vidMode & 0x7f) != 0x13)
error("vid_drawPackedSprite: Vide mode 0x%x is not fully supported!",
dest->vidMode & 0x7f);
// pDrawPackedSprite(sprBuf, width, height, x, y, transp, dest);
_videoDriver->drawPackedSprite(sprBuf, width, height, x, y, transp, dest);
}
void vid_setPalElem(int16 index, char red, char green, char blue, int16 unused,
int16 vidMode) {
byte pal[4];
redPalette[index] = red;
greenPalette[index] = green;
bluePalette[index] = blue;
if (vidMode != 0x13)
error("vid_setPalElem: Video mode 0x%x is not supported!",
vidMode);
pal[0] = (red << 2) | (red >> 4);
pal[1] = (green << 2) | (green >> 4);
pal[2] = (blue << 2) | (blue >> 4);
pal[3] = 0;
g_system->setPalette(pal, index, 1);
}
void vid_setPalette(PalDesc *palDesc) {
int16 i;
byte pal[1024];
int16 numcolors;
if (videoMode != 0x13)
error("vid_setPalette: Video mode 0x%x is not supported!",
videoMode);
if (setAllPalette)
numcolors = 256;
else
numcolors = 16;
for (i = 0; i < numcolors; i++) {
pal[i * 4 + 0] = (palDesc->vgaPal[i].red << 2) | (palDesc->vgaPal[i].red >> 4);
pal[i * 4 + 1] = (palDesc->vgaPal[i].green << 2) | (palDesc->vgaPal[i].green >> 4);
pal[i * 4 + 2] = (palDesc->vgaPal[i].blue << 2) | (palDesc->vgaPal[i].blue >> 4);
pal[i * 4 + 3] = 0;
}
g_system->setPalette(pal, 0, numcolors);
}
void vid_setFullPalette(PalDesc *palDesc) {
Color *colors;
int16 i;
byte pal[1024];
if (setAllPalette) {
colors = palDesc->vgaPal;
for (i = 0; i < 256; i++) {
redPalette[i] = colors[i].red;
greenPalette[i] = colors[i].green;
bluePalette[i] = colors[i].blue;
}
for (i = 0; i < 256; i++) {
pal[i * 4 + 0] = (colors[i].red << 2) | (colors[i].red >> 4);
pal[i * 4 + 1] = (colors[i].green << 2) | (colors[i].green >> 4);
pal[i * 4 + 2] = (colors[i].blue << 2) | (colors[i].blue >> 4);
pal[i * 4 + 3] = 0;
}
g_system->setPalette(pal, 0, 256);
} else {
vid_setPalette(palDesc);
}
}
void vid_initPrimary(int16 mode) {
int16 old;
if (curPrimaryDesc) {
vid_freeSurfDesc(curPrimaryDesc);
vid_freeSurfDesc(allocatedPrimary);
curPrimaryDesc = 0;
allocatedPrimary = 0;
}
if (mode != 0x13 && mode != 3 && mode != -1)
error("vid_initPrimary: Video mode 0x%x is not supported!",
mode);
if (videoMode != 0x13)
error("vid_initPrimary: Video mode 0x%x is not supported!",
mode);
old = oldMode;
if (mode == -1)
mode = 3;
oldMode = mode;
if (mode != 3)
vid_initDriver(mode);
needDriverInit = 1;
if (mode != 3) {
vid_initSurfDesc(mode, 320, 200, PRIMARY_SURFACE);
if (dontSetPalette)
return;
vid_setFullPalette(pPaletteDesc);
}
}
char vid_spriteUncompressor(byte *sprBuf, int16 srcWidth, int16 srcHeight,
int16 x, int16 y, int16 transp, SurfaceDesc *destDesc) {
SurfaceDesc sourceDesc;
byte *memBuffer;
byte *srcPtr;
byte *destPtr;
byte *linePtr;
byte temp;
uint16 sourceLeft;
int16 curWidth;
int16 curHeight;
int16 offset;
int16 counter2;
uint16 cmdVar;
int16 bufPos;
int16 strLen;
warning("vid_spriteUncompressor called");
if ((destDesc->vidMode & 0x7f) != 0x13)
error("vid_spriteUncompressor: Video mode 0x%x is not supported!",
destDesc->vidMode & 0x7f);
if (sprBuf[0] != 1)
return 0;
if (sprBuf[1] != 2)
return 0;
if (sprBuf[2] == 2) {
sourceDesc.width = srcWidth;
sourceDesc.height = srcHeight;
sourceDesc.vidMode = 0x93;
sourceDesc.vidPtr = sprBuf + 3;
vid_drawSprite(&sourceDesc, destDesc, 0, 0, srcWidth - 1,
srcHeight - 1, x, y, transp);
return 1;
} else {
memBuffer = (byte *)malloc(4114);
if (memBuffer == 0)
return 0;
srcPtr = sprBuf + 3;
sourceLeft = READ_LE_UINT16(srcPtr);
destPtr = destDesc->vidPtr + destDesc->width * y + x;
curWidth = 0;
curHeight = 0;
linePtr = destPtr;
srcPtr += 4;
for (offset = 0; offset < 4078; offset++)
memBuffer[offset] = 0x20;
cmdVar = 0;
bufPos = 4078;
while (1) {
cmdVar >>= 1;
if ((cmdVar & 0x100) == 0) {
cmdVar = *srcPtr | 0xff00;
srcPtr++;
}
if ((cmdVar & 1) != 0) {
temp = *srcPtr++;
if (temp != 0 || transp == 0)
*destPtr = temp;
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc->width;
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight)
break;
}
sourceLeft--;
if (sourceLeft == 0)
break;
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
} else {
offset = *srcPtr;
srcPtr++;
offset |= (*srcPtr & 0xf0) << 4;
strLen = (*srcPtr & 0x0f) + 3;
srcPtr++;
for (counter2 = 0; counter2 < strLen;
counter2++) {
temp =
memBuffer[(offset +
counter2) % 4096];
if (temp != 0 || transp == 0)
*destPtr = temp;
destPtr++;
curWidth++;
if (curWidth >= srcWidth) {
curWidth = 0;
linePtr += destDesc->width;
destPtr = linePtr;
curHeight++;
if (curHeight >= srcHeight) {
free(memBuffer);
return 1;
}
}
sourceLeft--;
if (sourceLeft == 0) {
free(memBuffer);
return 1;
}
memBuffer[bufPos] = temp;
bufPos++;
bufPos %= 4096;
}
}
}
}
free(memBuffer);
return 1;
}
void vid_setHandlers() {
//pDrawPacked = &vid_spriteUncompressor;
pFileHandler = 0;
setAllPalette = 1;
}
} // End of namespace Gob
|