1 /*
2 * Microsoft Video-1 Decoder
3 * Copyright (C) 2003 the ffmpeg project
4 *
5 * Portions Copyright (C) 2004 Mike McCormack for CodeWeavers
6 *
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
11 *
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
16 *
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
20 *
21 */
22
23 /**
24 * @file msvideo1.c
25 * Microsoft Video-1 Decoder by Mike Melanson (melanson@pcisys.net)
26 * For more information about the MS Video-1 format, visit:
27 * http://www.pcisys.net/~melanson/codecs/
28 *
29 * This decoder outputs either PAL8 or RGB555 data, depending on the
30 * whether a RGB palette was passed through palctrl;
31 * if it's present, then the data is PAL8; RGB555 otherwise.
32 */
33
34 #include <stdarg.h>
35 #include "windef.h"
36 #include "winbase.h"
37 #include "wingdi.h"
38 #include "winuser.h"
39 #include "commdlg.h"
40 #include "vfw.h"
41 #include "mmsystem.h"
42 #include "msvidc32_private.h"
43
44 #include "wine/debug.h"
45
46 WINE_DEFAULT_DEBUG_CHANNEL(msvidc32);
47
48 static HINSTANCE MSVIDC32_hModule;
49
50 #define CRAM_MAGIC mmioFOURCC('C', 'R', 'A', 'M')
51 #define MSVC_MAGIC mmioFOURCC('M', 'S', 'V', 'C')
52 #define WHAM_MAGIC mmioFOURCC('W', 'H', 'A', 'M')
53 #define compare_fourcc(fcc1, fcc2) (((fcc1)^(fcc2))&~0x20202020)
54
55 #define PALETTE_COUNT 256
56 #define LE_16(x) ((((const uint8_t *)(x))[1] << 8) | ((const uint8_t *)(x))[0])
57
58 /* FIXME - check the stream size */
59 #define CHECK_STREAM_PTR(n) \
60 if ((stream_ptr + n) > buf_size ) { \
61 WARN("stream_ptr out of bounds (%d >= %d)\n", \
62 stream_ptr + n, buf_size); \
63 return; \
64 }
65
66 typedef BYTE uint8_t;
67
68 typedef struct Msvideo1Context {
69 DWORD dwMagic;
70 int mode_8bit; /* if it's not 8-bit, it's 16-bit */
71 } Msvideo1Context;
72
73 static void
74 msvideo1_decode_8bit( int width, int height, const unsigned char *buf, int buf_size,
75 unsigned char *pixels, int stride)
76 {
77 int block_ptr, pixel_ptr;
78 int total_blocks;
79 int pixel_x, pixel_y; /* pixel width and height iterators */
80 int block_x, block_y; /* block width and height iterators */
81 int blocks_wide, blocks_high; /* width and height in 4x4 blocks */
82 int block_inc;
83 int row_dec;
84
85 /* decoding parameters */
86 int stream_ptr;
87 unsigned char byte_a, byte_b;
88 unsigned short flags;
89 int skip_blocks;
90 unsigned char colors[8];
91
92 stream_ptr = 0;
93 skip_blocks = 0;
94 blocks_wide = width / 4;
95 blocks_high = height / 4;
96 total_blocks = blocks_wide * blocks_high;
97 block_inc = 4;
98 row_dec = stride + 4;
99
100 for (block_y = blocks_high; block_y > 0; block_y--) {
101 block_ptr = ((block_y * 4) - 1) * stride;
102 for (block_x = blocks_wide; block_x > 0; block_x--) {
103 /* check if this block should be skipped */
104 if (skip_blocks) {
105 block_ptr += block_inc;
106 skip_blocks--;
107 total_blocks--;
108 continue;
109 }
110
111 pixel_ptr = block_ptr;
112
113 /* get the next two bytes in the encoded data stream */
114 CHECK_STREAM_PTR(2);
115 byte_a = buf[stream_ptr++];
116 byte_b = buf[stream_ptr++];
117
118 /* check if the decode is finished */
119 if ((byte_a == 0) && (byte_b == 0) && (total_blocks == 0))
120 return;
121 else if ((byte_b & 0xFC) == 0x84) {
122 /* skip code, but don't count the current block */
123 skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1;
124 } else if (byte_b < 0x80) {
125 /* 2-color encoding */
126 flags = (byte_b << 8) | byte_a;
127
128 CHECK_STREAM_PTR(2);
129 colors[0] = buf[stream_ptr++];
130 colors[1] = buf[stream_ptr++];
131
132 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
133 for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
134 {
135 #ifdef ORIGINAL
136 pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1];
137 #else
138 pixels[width*(height-(pixel_ptr/width)-1) +
139 pixel_ptr%width] =
140 colors[(flags & 0x1) ^ 1];
141 pixel_ptr++;
142 #endif
143 }
144 pixel_ptr -= row_dec;
145 }
146 } else if (byte_b >= 0x90) {
147 /* 8-color encoding */
148 flags = (byte_b << 8) | byte_a;
149
150 CHECK_STREAM_PTR(8);
151 memcpy(colors, &buf[stream_ptr], 8);
152 stream_ptr += 8;
153
154 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
155 for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
156 {
157 #ifdef ORIGINAL
158 pixels[pixel_ptr++] =
159 colors[((pixel_y & 0x2) << 1) +
160 (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
161 #else
162 pixels[width*(height-(pixel_ptr/width)-1) +
163 pixel_ptr%width] =
164 colors[((pixel_y & 0x2) << 1) +
165 (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
166 pixel_ptr++;
167 #endif
168 }
169 pixel_ptr -= row_dec;
170 }
171 } else {
172 /* 1-color encoding */
173 colors[0] = byte_a;
174
175 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
176 for (pixel_x = 0; pixel_x < 4; pixel_x++)
177 {
178 #ifdef ORIGINAL
179 pixels[pixel_ptr++] = colors[0];
180 #else
181 pixels[width*(height-(pixel_ptr/width)-1) +
182 pixel_ptr%width] = colors[0];
183 pixel_ptr++;
184 #endif
185 }
186 pixel_ptr -= row_dec;
187 }
188 }
189
190 block_ptr += block_inc;
191 total_blocks--;
192 }
193 }
194 }
195
196 static void
197 msvideo1_decode_16bit( int width, int height, const unsigned char *buf, int buf_size,
198 unsigned short *pixels, int stride)
199 {
200 int block_ptr, pixel_ptr;
201 int total_blocks;
202 int pixel_x, pixel_y; /* pixel width and height iterators */
203 int block_x, block_y; /* block width and height iterators */
204 int blocks_wide, blocks_high; /* width and height in 4x4 blocks */
205 int block_inc;
206 int row_dec;
207
208 /* decoding parameters */
209 int stream_ptr;
210 unsigned char byte_a, byte_b;
211 unsigned short flags;
212 int skip_blocks;
213 unsigned short colors[8];
214
215 stream_ptr = 0;
216 skip_blocks = 0;
217 blocks_wide = width / 4;
218 blocks_high = height / 4;
219 total_blocks = blocks_wide * blocks_high;
220 block_inc = 4;
221 row_dec = stride + 4;
222
223 for (block_y = blocks_high; block_y > 0; block_y--) {
224 block_ptr = ((block_y * 4) - 1) * stride;
225 for (block_x = blocks_wide; block_x > 0; block_x--) {
226 /* check if this block should be skipped */
227 if (skip_blocks) {
228 block_ptr += block_inc;
229 skip_blocks--;
230 total_blocks--;
231 continue;
232 }
233
234 pixel_ptr = block_ptr;
235
236 /* get the next two bytes in the encoded data stream */
237 CHECK_STREAM_PTR(2);
238 byte_a = buf[stream_ptr++];
239 byte_b = buf[stream_ptr++];
240
241 /* check if the decode is finished */
242 if ((byte_a == 0) && (byte_b == 0) && (total_blocks == 0)) {
243 return;
244 } else if ((byte_b & 0xFC) == 0x84) {
245 /* skip code, but don't count the current block */
246 skip_blocks = ((byte_b - 0x84) << 8) + byte_a - 1;
247 } else if (byte_b < 0x80) {
248 /* 2- or 8-color encoding modes */
249 flags = (byte_b << 8) | byte_a;
250
251 CHECK_STREAM_PTR(4);
252 colors[0] = LE_16(&buf[stream_ptr]);
253 stream_ptr += 2;
254 colors[1] = LE_16(&buf[stream_ptr]);
255 stream_ptr += 2;
256
257 if (colors[0] & 0x8000) {
258 /* 8-color encoding */
259 CHECK_STREAM_PTR(12);
260 colors[2] = LE_16(&buf[stream_ptr]);
261 stream_ptr += 2;
262 colors[3] = LE_16(&buf[stream_ptr]);
263 stream_ptr += 2;
264 colors[4] = LE_16(&buf[stream_ptr]);
265 stream_ptr += 2;
266 colors[5] = LE_16(&buf[stream_ptr]);
267 stream_ptr += 2;
268 colors[6] = LE_16(&buf[stream_ptr]);
269 stream_ptr += 2;
270 colors[7] = LE_16(&buf[stream_ptr]);
271 stream_ptr += 2;
272
273 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
274 for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
275 pixels[pixel_ptr++] =
276 colors[((pixel_y & 0x2) << 1) +
277 (pixel_x & 0x2) + ((flags & 0x1) ^ 1)];
278 pixel_ptr -= row_dec;
279 }
280 } else {
281 /* 2-color encoding */
282 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
283 for (pixel_x = 0; pixel_x < 4; pixel_x++, flags >>= 1)
284 pixels[pixel_ptr++] = colors[(flags & 0x1) ^ 1];
285 pixel_ptr -= row_dec;
286 }
287 }
288 } else {
289 /* otherwise, it's a 1-color block */
290 colors[0] = (byte_b << 8) | byte_a;
291
292 for (pixel_y = 0; pixel_y < 4; pixel_y++) {
293 for (pixel_x = 0; pixel_x < 4; pixel_x++)
294 pixels[pixel_ptr++] = colors[0];
295 pixel_ptr -= row_dec;
296 }
297 }
298
299 block_ptr += block_inc;
300 total_blocks--;
301 }
302 }
303 }
304
305 static LRESULT
306 CRAM_DecompressQuery( Msvideo1Context *info, LPBITMAPINFO in, LPBITMAPINFO out )
307 {
308 TRACE("ICM_DECOMPRESS_QUERY %p %p %p\n", info, in, out);
309
310 if( (info==NULL) || (info->dwMagic!=CRAM_MAGIC) )
311 return ICERR_BADPARAM;
312
313 TRACE("planes = %d\n", in->bmiHeader.biPlanes );
314 TRACE("bpp = %d\n", in->bmiHeader.biBitCount );
315 TRACE("height = %d\n", in->bmiHeader.biHeight );
316 TRACE("width = %d\n", in->bmiHeader.biWidth );
317 TRACE("compr = %x\n", in->bmiHeader.biCompression );
318
319 if( ( in->bmiHeader.biCompression != CRAM_MAGIC ) &&
320 ( in->bmiHeader.biCompression != MSVC_MAGIC ) &&
321 ( in->bmiHeader.biCompression != WHAM_MAGIC ) )
322 return ICERR_UNSUPPORTED;
323
324 if( ( in->bmiHeader.biBitCount != 16 ) &&
325 ( in->bmiHeader.biBitCount != 8 ) )
326 {
327 TRACE("can't do %d bpp\n", in->bmiHeader.biBitCount );
328 return ICERR_UNSUPPORTED;
329 }
330
331 /* output must be same dimensions as input */
332 if( out )
333 {
334 if( in->bmiHeader.biBitCount != out->bmiHeader.biBitCount )
335 return ICERR_UNSUPPORTED;
336 if( in->bmiHeader.biPlanes != out->bmiHeader.biPlanes )
337 return ICERR_UNSUPPORTED;
338 if( in->bmiHeader.biHeight != out->bmiHeader.biHeight )
339 return ICERR_UNSUPPORTED;
340 if( in->bmiHeader.biWidth != out->bmiHeader.biWidth )
341 return ICERR_UNSUPPORTED;
342 }
343
344 TRACE("OK!\n");
345
346 return ICERR_OK;
347 }
348
349 static LRESULT
350 CRAM_DecompressGetFormat( Msvideo1Context *info, LPBITMAPINFO in, LPBITMAPINFO out )
351 {
352 DWORD size;
353
354 TRACE("ICM_DECOMPRESS_GETFORMAT %p %p %p\n", info, in, out);
355
356 if( (info==NULL) || (info->dwMagic!=CRAM_MAGIC) )
357 return ICERR_BADPARAM;
358
359 size = in->bmiHeader.biSize;
360 if (in->bmiHeader.biBitCount <= 8)
361 size += in->bmiHeader.biClrUsed * sizeof(RGBQUAD);
362
363 if( out )
364 {
365 memcpy( out, in, size );
366 out->bmiHeader.biCompression = BI_RGB;
367 out->bmiHeader.biSizeImage = in->bmiHeader.biHeight
368 * in->bmiHeader.biWidth *4;
369 return ICERR_OK;
370 }
371
372 return size;
373 }
374
375 static LRESULT CRAM_DecompressBegin( Msvideo1Context *info, LPBITMAPINFO in, LPBITMAPINFO out )
376 {
377 TRACE("ICM_DECOMPRESS_BEGIN %p %p %p\n", info, in, out);
378
379 if( (info==NULL) || (info->dwMagic!=CRAM_MAGIC) )
380 return ICERR_BADPARAM;
381
382 TRACE("bitmap is %d bpp\n", in->bmiHeader.biBitCount);
383 if( in->bmiHeader.biBitCount == 8 )
384 info->mode_8bit = 1;
385 else if( in->bmiHeader.biBitCount == 16 )
386 info->mode_8bit = 0;
387 else
388 {
389 ERR("Bad output format\n");
390 return ICERR_BADPARAM;
391 }
392
393 return ICERR_OK;
394 }
395
396 static LRESULT CRAM_Decompress( Msvideo1Context *info, ICDECOMPRESS *icd, DWORD size )
397 {
398 LONG width, height, stride, sz;
399 WORD bit_per_pixel;
400
401 TRACE("ICM_DECOMPRESS %p %p %d\n", info, icd, size);
402
403 if( (info==NULL) || (info->dwMagic!=CRAM_MAGIC) )
404 return ICERR_BADPARAM;
405
406 /* FIXME: flags are ignored */
407
408 width = icd->lpbiInput->biWidth;
409 height = icd->lpbiInput->biHeight;
410 bit_per_pixel = icd->lpbiInput->biBitCount;
411 stride = width*bit_per_pixel/8;
412 sz = icd->lpbiInput->biSizeImage;
413
414 if (info->mode_8bit)
415 {
416 msvideo1_decode_8bit( width, height, icd->lpInput, sz,
417 icd->lpOutput, stride);
418 }
419 else
420 {
421 msvideo1_decode_16bit( width, height, icd->lpInput, sz,
422 icd->lpOutput, stride);
423 }
424
425 return ICERR_OK;
426 }
427
428 static LRESULT CRAM_DecompressEx( Msvideo1Context *info, ICDECOMPRESSEX *icd, DWORD size )
429 {
430 LONG width, height, stride, sz;
431 WORD bit_per_pixel;
432
433 TRACE("ICM_DECOMPRESSEX %p %p %d\n", info, icd, size);
434
435 if( (info==NULL) || (info->dwMagic!=CRAM_MAGIC) )
436 return ICERR_BADPARAM;
437
438 /* FIXME: flags are ignored */
439
440 width = icd->lpbiSrc->biWidth;
441 height = icd->lpbiSrc->biHeight;
442 bit_per_pixel = icd->lpbiSrc->biBitCount;
443 stride = width*bit_per_pixel/8;
444 sz = icd->lpbiSrc->biSizeImage;
445
446 if (info->mode_8bit)
447 {
448 msvideo1_decode_8bit( width, height, icd->lpSrc, sz,
449 icd->lpDst, stride);
450 }
451 else
452 {
453 msvideo1_decode_16bit( width, height, icd->lpSrc, sz,
454 icd->lpDst, stride);
455 }
456
457 return ICERR_OK;
458 }
459
460 static LRESULT CRAM_GetInfo( const Msvideo1Context *info, ICINFO *icinfo, DWORD dwSize )
461 {
462 if (!icinfo) return sizeof(ICINFO);
463 if (dwSize < sizeof(ICINFO)) return 0;
464
465 icinfo->dwSize = sizeof(ICINFO);
466 icinfo->fccType = ICTYPE_VIDEO;
467 icinfo->fccHandler = info ? info->dwMagic : CRAM_MAGIC;
468 icinfo->dwFlags = 0;
469 icinfo->dwVersion = ICVERSION;
470 icinfo->dwVersionICM = ICVERSION;
471
472 LoadStringW(MSVIDC32_hModule, IDS_NAME, icinfo->szName, sizeof(icinfo->szName)/sizeof(WCHAR));
473 LoadStringW(MSVIDC32_hModule, IDS_DESCRIPTION, icinfo->szDescription, sizeof(icinfo->szDescription)/sizeof(WCHAR));
474 /* msvfw32 will fill icinfo->szDriver for us */
475
476 return sizeof(ICINFO);
477 }
478
479 /***********************************************************************
480 * DriverProc (MSVIDC32.@)
481 */
482 LRESULT WINAPI CRAM_DriverProc( DWORD_PTR dwDriverId, HDRVR hdrvr, UINT msg,
483 LPARAM lParam1, LPARAM lParam2 )
484 {
485 Msvideo1Context *info = (Msvideo1Context *) dwDriverId;
486 LRESULT r = ICERR_UNSUPPORTED;
487
488 TRACE("%ld %p %04x %08lx %08lx\n", dwDriverId, hdrvr, msg, lParam1, lParam2);
489
490 switch( msg )
491 {
492 case DRV_LOAD:
493 TRACE("Loaded\n");
494 r = 1;
495 break;
496
497 case DRV_ENABLE:
498 break;
499
500 case DRV_OPEN:
501 {
502 ICINFO *icinfo = (ICINFO *)lParam2;
503
504 TRACE("Opened\n");
505
506 if (icinfo && compare_fourcc(icinfo->fccType, ICTYPE_VIDEO)) return 0;
507
508 info = HeapAlloc( GetProcessHeap(), 0, sizeof (Msvideo1Context) );
509 if( info )
510 {
511 memset( info, 0, sizeof info );
512 info->dwMagic = CRAM_MAGIC;
513 }
514 r = (LRESULT) info;
515 break;
516 }
517
518 case DRV_CLOSE:
519 HeapFree( GetProcessHeap(), 0, info );
520 break;
521
522 case DRV_DISABLE:
523 break;
524
525 case DRV_FREE:
526 break;
527
528 case ICM_GETINFO:
529 r = CRAM_GetInfo( info, (ICINFO *)lParam1, (DWORD)lParam2 );
530 break;
531
532 case ICM_DECOMPRESS_QUERY:
533 r = CRAM_DecompressQuery( info, (LPBITMAPINFO) lParam1,
534 (LPBITMAPINFO) lParam2 );
535 break;
536
537 case ICM_DECOMPRESS_GET_FORMAT:
538 r = CRAM_DecompressGetFormat( info, (LPBITMAPINFO) lParam1,
539 (LPBITMAPINFO) lParam2 );
540 break;
541
542 case ICM_DECOMPRESS_GET_PALETTE:
543 FIXME("ICM_DECOMPRESS_GET_PALETTE\n");
544 break;
545
546 case ICM_DECOMPRESSEX_QUERY:
547 FIXME("ICM_DECOMPRESSEX_QUERY\n");
548 break;
549
550 case ICM_DECOMPRESS:
551 r = CRAM_Decompress( info, (ICDECOMPRESS*) lParam1,
552 (DWORD) lParam2 );
553 break;
554
555 case ICM_DECOMPRESS_BEGIN:
556 r = CRAM_DecompressBegin( info, (LPBITMAPINFO) lParam1,
557 (LPBITMAPINFO) lParam2 );
558 break;
559
560 case ICM_DECOMPRESSEX:
561 r = CRAM_DecompressEx( info, (ICDECOMPRESSEX*) lParam1,
562 (DWORD) lParam2 );
563 break;
564
565 case ICM_COMPRESS_QUERY:
566 FIXME("compression not implemented\n");
567 r = ICERR_BADFORMAT;
568 break;
569
570 case ICM_CONFIGURE:
571 r = ICERR_UNSUPPORTED;
572 break;
573
574 default:
575 FIXME("Unknown message: %04x %ld %ld\n", msg, lParam1, lParam2);
576 }
577
578 return r;
579 }
580
581 /***********************************************************************
582 * DllMain
583 */
584 BOOL WINAPI DllMain(HINSTANCE hModule, DWORD dwReason, LPVOID lpReserved)
585 {
586 TRACE("(%p,%d,%p)\n", hModule, dwReason, lpReserved);
587
588 switch (dwReason)
589 {
590 case DLL_PROCESS_ATTACH:
591 DisableThreadLibraryCalls(hModule);
592 MSVIDC32_hModule = hModule;
593 break;
594
595 case DLL_PROCESS_DETACH:
596 break;
597 }
598 return TRUE;
599 }
600
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