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[REACTOS]
[reactos.git] / reactos / dll / win32 / msacm32 / msadp32 / msadp32.c
1 /*
2 * MS ADPCM handling
3 *
4 * Copyright (C) 2002 Eric Pouech
5 *
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 Street, Fifth Floor, Boston, MA 02110-1301 USA
20 */
21
22 #include <assert.h>
23 #include <stdarg.h>
24 #include <string.h>
25 #include "windef.h"
26 #include "winbase.h"
27 #include "wingdi.h"
28 #include "winuser.h"
29 #include "winnls.h"
30 #include "mmsystem.h"
31 #include "mmreg.h"
32 #include "msacm.h"
33 #include "msacmdrv.h"
34 #include "wine/debug.h"
35
36 /* see http://www.pcisys.net/~melanson/codecs/adpcm.txt for the details */
37
38 WINE_DEFAULT_DEBUG_CHANNEL(adpcm);
39
40 /***********************************************************************
41 * ADPCM_drvOpen
42 */
43 static DWORD ADPCM_drvOpen(LPCSTR str)
44 {
45 return 1;
46 }
47
48 /***********************************************************************
49 * ADPCM_drvClose
50 */
51 static DWORD ADPCM_drvClose(DWORD dwDevID)
52 {
53 return 1;
54 }
55
56 typedef struct tagAcmAdpcmData
57 {
58 void (*convert)(PACMDRVSTREAMINSTANCE adsi,
59 const unsigned char*, LPDWORD, unsigned char*, LPDWORD);
60 } AcmAdpcmData;
61
62 /* table to list all supported formats... those are the basic ones. this
63 * also helps given a unique index to each of the supported formats
64 */
65 typedef struct
66 {
67 int nChannels;
68 int nBits;
69 int rate;
70 } Format;
71
72 static Format PCM_Formats[] =
73 {
74 {1, 8, 8000}, {2, 8, 8000}, {1, 16, 8000}, {2, 16, 8000},
75 {1, 8, 11025}, {2, 8, 11025}, {1, 16, 11025}, {2, 16, 11025},
76 {1, 8, 22050}, {2, 8, 22050}, {1, 16, 22050}, {2, 16, 22050},
77 {1, 8, 44100}, {2, 8, 44100}, {1, 16, 44100}, {2, 16, 44100},
78 };
79
80 static Format ADPCM_Formats[] =
81 {
82 {1, 4, 8000}, {2, 4, 8000}, {1, 4, 11025}, {2, 4, 11025},
83 {1, 4, 22050}, {2, 4, 22050}, {1, 4, 44100}, {2, 4, 44100},
84 };
85
86 #define NUM_PCM_FORMATS (sizeof(PCM_Formats) / sizeof(PCM_Formats[0]))
87 #define NUM_ADPCM_FORMATS (sizeof(ADPCM_Formats) / sizeof(ADPCM_Formats[0]))
88
89 static int MS_Delta[] =
90 {
91 230, 230, 230, 230, 307, 409, 512, 614,
92 768, 614, 512, 409, 307, 230, 230, 230
93 };
94
95
96 static ADPCMCOEFSET MSADPCM_CoeffSet[] =
97 {
98 {256, 0}, {512, -256}, {0, 0}, {192, 64}, {240, 0}, {460, -208}, {392, -232}
99 };
100
101 /***********************************************************************
102 * ADPCM_GetFormatIndex
103 */
104 static DWORD ADPCM_GetFormatIndex(WAVEFORMATEX* wfx)
105 {
106 int i, hi;
107 Format* fmts;
108
109 switch (wfx->wFormatTag)
110 {
111 case WAVE_FORMAT_PCM:
112 hi = NUM_PCM_FORMATS;
113 fmts = PCM_Formats;
114 break;
115 case WAVE_FORMAT_ADPCM:
116 hi = NUM_ADPCM_FORMATS;
117 fmts = ADPCM_Formats;
118 break;
119 default:
120 return 0xFFFFFFFF;
121 }
122
123 for (i = 0; i < hi; i++)
124 {
125 if (wfx->nChannels == fmts[i].nChannels &&
126 wfx->nSamplesPerSec == fmts[i].rate &&
127 wfx->wBitsPerSample == fmts[i].nBits)
128 return i;
129 }
130
131 return 0xFFFFFFFF;
132 }
133
134 static void init_wfx_adpcm(ADPCMWAVEFORMAT* awfx)
135 {
136 register WAVEFORMATEX* pwfx = &awfx->wfx;
137
138 /* we assume wFormatTag, nChannels, nSamplesPerSec and wBitsPerSample
139 * have been initialized... */
140
141 if (pwfx->wFormatTag != WAVE_FORMAT_ADPCM) {FIXME("wrong FT\n"); return;}
142 if (ADPCM_GetFormatIndex(pwfx) == 0xFFFFFFFF) {FIXME("wrong fmt\n"); return;}
143
144 switch (pwfx->nSamplesPerSec)
145 {
146 case 8000: pwfx->nBlockAlign = 256; break;
147 case 11025: pwfx->nBlockAlign = 256; break;
148 case 22050: pwfx->nBlockAlign = 512; break;
149 default:
150 case 44100: pwfx->nBlockAlign = 1024; break;
151 }
152 pwfx->cbSize = 2 * sizeof(WORD) + 7 * sizeof(ADPCMCOEFSET);
153 /* 7 is the size of the block head (which contains two samples) */
154
155 awfx->wSamplesPerBlock = (pwfx->nBlockAlign - (7 * pwfx->nChannels)) * (2 / pwfx->nChannels) + 2;
156 pwfx->nAvgBytesPerSec = (pwfx->nSamplesPerSec * pwfx->nBlockAlign) / awfx->wSamplesPerBlock;
157 awfx->wNumCoef = 7;
158 memcpy(awfx->aCoef, MSADPCM_CoeffSet, 7 * sizeof(ADPCMCOEFSET));
159 }
160
161 /***********************************************************************
162 * R16
163 *
164 * Read a 16 bit sample (correctly handles endianess)
165 */
166 static inline short R16(const unsigned char* src)
167 {
168 return (short)((unsigned short)src[0] | ((unsigned short)src[1] << 8));
169 }
170
171 /***********************************************************************
172 * W16
173 *
174 * Write a 16 bit sample (correctly handles endianess)
175 */
176 static inline void W16(unsigned char* dst, short s)
177 {
178 dst[0] = LOBYTE(s);
179 dst[1] = HIBYTE(s);
180 }
181
182 static inline void clamp_sample(int* sample)
183 {
184 if (*sample < -32768) *sample = -32768;
185 if (*sample > 32767) *sample = 32767;
186 }
187
188 static inline void process_nibble(unsigned nibble, int* idelta,
189 int* sample1, int* sample2,
190 const ADPCMCOEFSET* coeff)
191 {
192 int sample;
193 int snibble;
194
195 /* nibble is in fact a signed 4 bit integer => propagate sign if needed */
196 snibble = (nibble & 0x08) ? (nibble - 16) : nibble;
197 sample = ((*sample1 * coeff->iCoef1) + (*sample2 * coeff->iCoef2)) / 256 +
198 snibble * *idelta;
199 clamp_sample(&sample);
200
201 *sample2 = *sample1;
202 *sample1 = sample;
203 *idelta = ((MS_Delta[nibble] * *idelta) / 256);
204 if (*idelta < 16) *idelta = 16;
205 }
206
207 static void cvtSSms16K(PACMDRVSTREAMINSTANCE adsi,
208 const unsigned char* src, LPDWORD nsrc,
209 unsigned char* dst, LPDWORD ndst)
210 {
211 int ideltaL, ideltaR;
212 int sample1L, sample2L;
213 int sample1R, sample2R;
214 ADPCMCOEFSET coeffL, coeffR;
215 int nsamp;
216 int nsamp_blk = ((ADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
217 DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
218 *ndst / (nsamp_blk * 2 * 2));
219
220 *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
221 *ndst = nblock * nsamp_blk * 2 * 2;
222
223 nsamp_blk -= 2; /* see below for samples from block head */
224 for (; nblock > 0; nblock--)
225 {
226 const unsigned char* in_src = src;
227
228 assert(*src <= 6);
229 coeffL = MSADPCM_CoeffSet[*src++];
230 assert(*src <= 6);
231 coeffR = MSADPCM_CoeffSet[*src++];
232
233 ideltaL = R16(src); src += 2;
234 ideltaR = R16(src); src += 2;
235 sample1L = R16(src); src += 2;
236 sample1R = R16(src); src += 2;
237 sample2L = R16(src); src += 2;
238 sample2R = R16(src); src += 2;
239
240 /* store samples from block head */
241 W16(dst, sample2L); dst += 2;
242 W16(dst, sample2R); dst += 2;
243 W16(dst, sample1L); dst += 2;
244 W16(dst, sample1R); dst += 2;
245
246 for (nsamp = nsamp_blk; nsamp > 0; nsamp--)
247 {
248 process_nibble(*src >> 4, &ideltaL, &sample1L, &sample2L, &coeffL);
249 W16(dst, sample1L); dst += 2;
250 process_nibble(*src++ & 0x0F, &ideltaR, &sample1R, &sample2R, &coeffR);
251 W16(dst, sample1R); dst += 2;
252 }
253 src = in_src + adsi->pwfxSrc->nBlockAlign;
254 }
255 }
256
257 static void cvtMMms16K(PACMDRVSTREAMINSTANCE adsi,
258 const unsigned char* src, LPDWORD nsrc,
259 unsigned char* dst, LPDWORD ndst)
260 {
261 int idelta;
262 int sample1, sample2;
263 ADPCMCOEFSET coeff;
264 int nsamp;
265 int nsamp_blk = ((ADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
266 DWORD nblock = min(*nsrc / adsi->pwfxSrc->nBlockAlign,
267 *ndst / (nsamp_blk * 2));
268
269 *nsrc = nblock * adsi->pwfxSrc->nBlockAlign;
270 *ndst = nblock * nsamp_blk * 2;
271
272 nsamp_blk -= 2; /* see below for samples from block head */
273 for (; nblock > 0; nblock--)
274 {
275 const unsigned char* in_src = src;
276
277 assert(*src <= 6);
278 coeff = MSADPCM_CoeffSet[*src++];
279
280 idelta = R16(src); src += 2;
281 sample1 = R16(src); src += 2;
282 sample2 = R16(src); src += 2;
283
284 /* store samples from block head */
285 W16(dst, sample2); dst += 2;
286 W16(dst, sample1); dst += 2;
287
288 for (nsamp = nsamp_blk; nsamp > 0; nsamp -= 2)
289 {
290 process_nibble(*src >> 4, &idelta, &sample1, &sample2, &coeff);
291 W16(dst, sample1); dst += 2;
292 process_nibble(*src++ & 0x0F, &idelta, &sample1, &sample2, &coeff);
293 W16(dst, sample1); dst += 2;
294 }
295 src = in_src + adsi->pwfxSrc->nBlockAlign;
296 }
297 }
298
299 #if 0
300 static void cvtSS16msK(PACMDRVSTREAMINSTANCE adsi,
301 const unsigned char* src, LPDWORD nsrc,
302 unsigned char* dst, LPDWORD ndst)
303 {
304 }
305
306 static void cvtMM16msK(PACMDRVSTREAMINSTANCE adsi,
307 const unsigned char* src, LPDWORD nsrc,
308 unsigned char* dst, LPDWORD ndst)
309 {
310 }
311 #endif
312
313 /***********************************************************************
314 * ADPCM_DriverDetails
315 *
316 */
317 static LRESULT ADPCM_DriverDetails(PACMDRIVERDETAILSW add)
318 {
319 add->fccType = ACMDRIVERDETAILS_FCCTYPE_AUDIOCODEC;
320 add->fccComp = ACMDRIVERDETAILS_FCCCOMP_UNDEFINED;
321 add->wMid = 0xFF;
322 add->wPid = 0x00;
323 add->vdwACM = 0x01000000;
324 add->vdwDriver = 0x01000000;
325 add->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
326 add->cFormatTags = 2; /* PCM, MS ADPCM */
327 add->cFilterTags = 0;
328 add->hicon = NULL;
329 MultiByteToWideChar( CP_ACP, 0, "WINE-MS ADPCM", -1,
330 add->szShortName, sizeof(add->szShortName)/sizeof(WCHAR) );
331 MultiByteToWideChar( CP_ACP, 0, "Wine MS ADPCM converter", -1,
332 add->szLongName, sizeof(add->szLongName)/sizeof(WCHAR) );
333 MultiByteToWideChar( CP_ACP, 0, "Brought to you by the Wine team...", -1,
334 add->szCopyright, sizeof(add->szCopyright)/sizeof(WCHAR) );
335 MultiByteToWideChar( CP_ACP, 0, "Refer to LICENSE file", -1,
336 add->szLicensing, sizeof(add->szLicensing)/sizeof(WCHAR) );
337 add->szFeatures[0] = 0;
338
339 return MMSYSERR_NOERROR;
340 }
341
342 /***********************************************************************
343 * ADPCM_FormatTagDetails
344 *
345 */
346 static LRESULT ADPCM_FormatTagDetails(PACMFORMATTAGDETAILSW aftd, DWORD dwQuery)
347 {
348 static WCHAR szPcm[]={'P','C','M',0};
349 static WCHAR szMsAdPcm[]={'M','S',' ','A','d','P','C','M',0};
350
351 switch (dwQuery)
352 {
353 case ACM_FORMATTAGDETAILSF_INDEX:
354 if (aftd->dwFormatTagIndex >= 2) return ACMERR_NOTPOSSIBLE;
355 break;
356 case ACM_FORMATTAGDETAILSF_LARGESTSIZE:
357 if (aftd->dwFormatTag == WAVE_FORMAT_UNKNOWN)
358 {
359 aftd->dwFormatTagIndex = 1; /* WAVE_FORMAT_ADPCM is bigger than PCM */
360 break;
361 }
362 /* fall thru */
363 case ACM_FORMATTAGDETAILSF_FORMATTAG:
364 switch (aftd->dwFormatTag)
365 {
366 case WAVE_FORMAT_PCM: aftd->dwFormatTagIndex = 0; break;
367 case WAVE_FORMAT_ADPCM: aftd->dwFormatTagIndex = 1; break;
368 default: return ACMERR_NOTPOSSIBLE;
369 }
370 break;
371 default:
372 WARN("Unsupported query %08lx\n", dwQuery);
373 return MMSYSERR_NOTSUPPORTED;
374 }
375
376 aftd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
377 switch (aftd->dwFormatTagIndex)
378 {
379 case 0:
380 aftd->dwFormatTag = WAVE_FORMAT_PCM;
381 aftd->cbFormatSize = sizeof(PCMWAVEFORMAT);
382 aftd->cStandardFormats = NUM_PCM_FORMATS;
383 lstrcpyW(aftd->szFormatTag, szPcm);
384 break;
385 case 1:
386 aftd->dwFormatTag = WAVE_FORMAT_ADPCM;
387 aftd->cbFormatSize = sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET);
388 aftd->cStandardFormats = NUM_ADPCM_FORMATS;
389 lstrcpyW(aftd->szFormatTag, szMsAdPcm);
390 break;
391 }
392 return MMSYSERR_NOERROR;
393 }
394
395 /***********************************************************************
396 * ADPCM_FormatDetails
397 *
398 */
399 static LRESULT ADPCM_FormatDetails(PACMFORMATDETAILSW afd, DWORD dwQuery)
400 {
401 switch (dwQuery)
402 {
403 case ACM_FORMATDETAILSF_FORMAT:
404 if (ADPCM_GetFormatIndex(afd->pwfx) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
405 break;
406 case ACM_FORMATDETAILSF_INDEX:
407 afd->pwfx->wFormatTag = afd->dwFormatTag;
408 switch (afd->dwFormatTag)
409 {
410 case WAVE_FORMAT_PCM:
411 if (afd->dwFormatIndex >= NUM_PCM_FORMATS) return ACMERR_NOTPOSSIBLE;
412 afd->pwfx->nChannels = PCM_Formats[afd->dwFormatIndex].nChannels;
413 afd->pwfx->nSamplesPerSec = PCM_Formats[afd->dwFormatIndex].rate;
414 afd->pwfx->wBitsPerSample = PCM_Formats[afd->dwFormatIndex].nBits;
415 /* native MSACM uses a PCMWAVEFORMAT structure, so cbSize is not accessible
416 * afd->pwfx->cbSize = 0;
417 */
418 afd->pwfx->nBlockAlign =
419 (afd->pwfx->nChannels * afd->pwfx->wBitsPerSample) / 8;
420 afd->pwfx->nAvgBytesPerSec =
421 afd->pwfx->nSamplesPerSec * afd->pwfx->nBlockAlign;
422 break;
423 case WAVE_FORMAT_ADPCM:
424 if (afd->dwFormatIndex >= NUM_ADPCM_FORMATS) return ACMERR_NOTPOSSIBLE;
425 if (afd->cbwfx < sizeof(ADPCMWAVEFORMAT) + (7 - 1) * sizeof(ADPCMCOEFSET))
426 return ACMERR_NOTPOSSIBLE;
427 afd->pwfx->nChannels = ADPCM_Formats[afd->dwFormatIndex].nChannels;
428 afd->pwfx->nSamplesPerSec = ADPCM_Formats[afd->dwFormatIndex].rate;
429 afd->pwfx->wBitsPerSample = ADPCM_Formats[afd->dwFormatIndex].nBits;
430 init_wfx_adpcm((ADPCMWAVEFORMAT*)afd->pwfx);
431 break;
432 default:
433 WARN("Unsupported tag %08lx\n", afd->dwFormatTag);
434 return MMSYSERR_INVALPARAM;
435 }
436 break;
437 default:
438 WARN("Unsupported query %08lx\n", dwQuery);
439 return MMSYSERR_NOTSUPPORTED;
440 }
441 afd->fdwSupport = ACMDRIVERDETAILS_SUPPORTF_CODEC;
442 afd->szFormat[0] = 0; /* let MSACM format this for us... */
443
444 return MMSYSERR_NOERROR;
445 }
446
447 /***********************************************************************
448 * ADPCM_FormatSuggest
449 *
450 */
451 static LRESULT ADPCM_FormatSuggest(PACMDRVFORMATSUGGEST adfs)
452 {
453 /* some tests ... */
454 if (adfs->cbwfxSrc < sizeof(PCMWAVEFORMAT) ||
455 adfs->cbwfxDst < sizeof(PCMWAVEFORMAT) ||
456 ADPCM_GetFormatIndex(adfs->pwfxSrc) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
457 /* FIXME: should do those tests against the real size (according to format tag */
458
459 /* If no suggestion for destination, then copy source value */
460 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NCHANNELS))
461 adfs->pwfxDst->nChannels = adfs->pwfxSrc->nChannels;
462 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_NSAMPLESPERSEC))
463 adfs->pwfxDst->nSamplesPerSec = adfs->pwfxSrc->nSamplesPerSec;
464
465 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WBITSPERSAMPLE))
466 {
467 if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
468 adfs->pwfxDst->wBitsPerSample = 4;
469 else
470 adfs->pwfxDst->wBitsPerSample = 16;
471 }
472 if (!(adfs->fdwSuggest & ACM_FORMATSUGGESTF_WFORMATTAG))
473 {
474 if (adfs->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM)
475 adfs->pwfxDst->wFormatTag = WAVE_FORMAT_ADPCM;
476 else
477 adfs->pwfxDst->wFormatTag = WAVE_FORMAT_PCM;
478 }
479
480 /* check if result is ok */
481 if (ADPCM_GetFormatIndex(adfs->pwfxDst) == 0xFFFFFFFF) return ACMERR_NOTPOSSIBLE;
482
483 /* recompute other values */
484 switch (adfs->pwfxDst->wFormatTag)
485 {
486 case WAVE_FORMAT_PCM:
487 adfs->pwfxDst->nBlockAlign = (adfs->pwfxDst->nChannels * adfs->pwfxDst->wBitsPerSample) / 8;
488 adfs->pwfxDst->nAvgBytesPerSec = adfs->pwfxDst->nSamplesPerSec * adfs->pwfxDst->nBlockAlign;
489 break;
490 case WAVE_FORMAT_ADPCM:
491 init_wfx_adpcm((ADPCMWAVEFORMAT*)adfs->pwfxDst);
492 break;
493 default:
494 FIXME("\n");
495 break;
496 }
497
498 return MMSYSERR_NOERROR;
499 }
500
501 /***********************************************************************
502 * ADPCM_Reset
503 *
504 */
505 static void ADPCM_Reset(PACMDRVSTREAMINSTANCE adsi, AcmAdpcmData* aad)
506 {
507 }
508
509 /***********************************************************************
510 * ADPCM_StreamOpen
511 *
512 */
513 static LRESULT ADPCM_StreamOpen(PACMDRVSTREAMINSTANCE adsi)
514 {
515 AcmAdpcmData* aad;
516
517 assert(!(adsi->fdwOpen & ACM_STREAMOPENF_ASYNC));
518
519 if (ADPCM_GetFormatIndex(adsi->pwfxSrc) == 0xFFFFFFFF ||
520 ADPCM_GetFormatIndex(adsi->pwfxDst) == 0xFFFFFFFF)
521 return ACMERR_NOTPOSSIBLE;
522
523 aad = HeapAlloc(GetProcessHeap(), 0, sizeof(AcmAdpcmData));
524 if (aad == 0) return MMSYSERR_NOMEM;
525
526 adsi->dwDriver = (DWORD)aad;
527
528 if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
529 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
530 {
531 goto theEnd;
532 }
533 else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
534 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
535 {
536 /* resampling or mono <=> stereo not available
537 * ADPCM algo only define 16 bit per sample output
538 */
539 if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
540 adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
541 adsi->pwfxDst->wBitsPerSample != 16)
542 goto theEnd;
543
544 #if 0
545 {
546 unsigned int nspb = ((IMAADPCMWAVEFORMAT*)adsi->pwfxSrc)->wSamplesPerBlock;
547 FIXME("spb=%u\n", nspb);
548
549 /* we check that in a block, after the header, samples are present on
550 * 4-sample packet pattern
551 * we also check that the block alignement is bigger than the expected size
552 */
553 if (((nspb - 1) & 3) != 0) goto theEnd;
554 if ((((nspb - 1) / 2) + 4) * adsi->pwfxSrc->nChannels < adsi->pwfxSrc->nBlockAlign)
555 goto theEnd;
556 }
557 #endif
558
559 /* adpcm decoding... */
560 if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 2)
561 aad->convert = cvtSSms16K;
562 if (adsi->pwfxDst->wBitsPerSample == 16 && adsi->pwfxDst->nChannels == 1)
563 aad->convert = cvtMMms16K;
564 }
565 else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
566 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
567 {
568 if (adsi->pwfxSrc->nSamplesPerSec != adsi->pwfxDst->nSamplesPerSec ||
569 adsi->pwfxSrc->nChannels != adsi->pwfxDst->nChannels ||
570 adsi->pwfxSrc->wBitsPerSample != 16)
571 goto theEnd;
572 #if 0
573 nspb = ((IMAADPCMWAVEFORMAT*)adsi->pwfxDst)->wSamplesPerBlock;
574 FIXME("spb=%u\n", nspb);
575
576 /* we check that in a block, after the header, samples are present on
577 * 4-sample packet pattern
578 * we also check that the block alignement is bigger than the expected size
579 */
580 if (((nspb - 1) & 3) != 0) goto theEnd;
581 if ((((nspb - 1) / 2) + 4) * adsi->pwfxDst->nChannels < adsi->pwfxDst->nBlockAlign)
582 goto theEnd;
583 #endif
584 #if 0
585 /* adpcm coding... */
586 if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 2)
587 aad->convert = cvtSS16msK;
588 if (adsi->pwfxSrc->wBitsPerSample == 16 && adsi->pwfxSrc->nChannels == 1)
589 aad->convert = cvtMM16msK;
590 #endif
591 FIXME("We don't support encoding yet\n");
592 goto theEnd;
593 }
594 else goto theEnd;
595 ADPCM_Reset(adsi, aad);
596
597 return MMSYSERR_NOERROR;
598
599 theEnd:
600 HeapFree(GetProcessHeap(), 0, aad);
601 adsi->dwDriver = 0L;
602 return MMSYSERR_NOTSUPPORTED;
603 }
604
605 /***********************************************************************
606 * ADPCM_StreamClose
607 *
608 */
609 static LRESULT ADPCM_StreamClose(PACMDRVSTREAMINSTANCE adsi)
610 {
611 HeapFree(GetProcessHeap(), 0, (void*)adsi->dwDriver);
612 return MMSYSERR_NOERROR;
613 }
614
615 /***********************************************************************
616 * ADPCM_round
617 *
618 */
619 static inline DWORD ADPCM_round(DWORD a, DWORD b, DWORD c)
620 {
621 assert(a && b && c);
622 /* to be sure, always return an entire number of c... */
623 return ((double)a * (double)b + (double)c - 1) / (double)c;
624 }
625
626 /***********************************************************************
627 * ADPCM_StreamSize
628 *
629 */
630 static LRESULT ADPCM_StreamSize(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMSIZE adss)
631 {
632 switch (adss->fdwSize)
633 {
634 case ACM_STREAMSIZEF_DESTINATION:
635 /* cbDstLength => cbSrcLength */
636 if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
637 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
638 {
639 /* don't take block overhead into account, doesn't matter too much */
640 adss->cbSrcLength = adss->cbDstLength * 4;
641 }
642 else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
643 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
644 {
645 FIXME("misses the block header overhead\n");
646 adss->cbSrcLength = 256 + adss->cbDstLength / 4;
647 }
648 else
649 {
650 return MMSYSERR_NOTSUPPORTED;
651 }
652 break;
653 case ACM_STREAMSIZEF_SOURCE:
654 /* cbSrcLength => cbDstLength */
655 if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_PCM &&
656 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_ADPCM)
657 {
658 FIXME("misses the block header overhead\n");
659 adss->cbDstLength = 256 + adss->cbSrcLength / 4;
660 }
661 else if (adsi->pwfxSrc->wFormatTag == WAVE_FORMAT_ADPCM &&
662 adsi->pwfxDst->wFormatTag == WAVE_FORMAT_PCM)
663 {
664 /* don't take block overhead into account, doesn't matter too much */
665 adss->cbDstLength = adss->cbSrcLength * 4;
666 }
667 else
668 {
669 return MMSYSERR_NOTSUPPORTED;
670 }
671 break;
672 default:
673 WARN("Unsupported query %08lx\n", adss->fdwSize);
674 return MMSYSERR_NOTSUPPORTED;
675 }
676 return MMSYSERR_NOERROR;
677 }
678
679 /***********************************************************************
680 * ADPCM_StreamConvert
681 *
682 */
683 static LRESULT ADPCM_StreamConvert(PACMDRVSTREAMINSTANCE adsi, PACMDRVSTREAMHEADER adsh)
684 {
685 AcmAdpcmData* aad = (AcmAdpcmData*)adsi->dwDriver;
686 DWORD nsrc = adsh->cbSrcLength;
687 DWORD ndst = adsh->cbDstLength;
688
689 if (adsh->fdwConvert &
690 ~(ACM_STREAMCONVERTF_BLOCKALIGN|
691 ACM_STREAMCONVERTF_END|
692 ACM_STREAMCONVERTF_START))
693 {
694 FIXME("Unsupported fdwConvert (%08lx), ignoring it\n", adsh->fdwConvert);
695 }
696 /* ACM_STREAMCONVERTF_BLOCKALIGN
697 * currently all conversions are block aligned, so do nothing for this flag
698 * ACM_STREAMCONVERTF_END
699 * no pending data, so do nothing for this flag
700 */
701 if ((adsh->fdwConvert & ACM_STREAMCONVERTF_START))
702 {
703 ADPCM_Reset(adsi, aad);
704 }
705
706 aad->convert(adsi, adsh->pbSrc, &nsrc, adsh->pbDst, &ndst);
707 adsh->cbSrcLengthUsed = nsrc;
708 adsh->cbDstLengthUsed = ndst;
709
710 return MMSYSERR_NOERROR;
711 }
712
713 /**************************************************************************
714 * ADPCM_DriverProc [exported]
715 */
716 LRESULT CALLBACK ADPCM_DriverProc(DWORD dwDevID, HDRVR hDriv, UINT wMsg,
717 LPARAM dwParam1, LPARAM dwParam2)
718 {
719 TRACE("(%08lx %08lx %04x %08lx %08lx);\n",
720 dwDevID, (DWORD)hDriv, wMsg, dwParam1, dwParam2);
721
722 switch (wMsg)
723 {
724 case DRV_LOAD: return 1;
725 case DRV_FREE: return 1;
726 case DRV_OPEN: return ADPCM_drvOpen((LPSTR)dwParam1);
727 case DRV_CLOSE: return ADPCM_drvClose(dwDevID);
728 case DRV_ENABLE: return 1;
729 case DRV_DISABLE: return 1;
730 case DRV_QUERYCONFIGURE: return 1;
731 case DRV_CONFIGURE: MessageBoxA(0, "MSACM MS ADPCM filter !", "Wine Driver", MB_OK); return 1;
732 case DRV_INSTALL: return DRVCNF_RESTART;
733 case DRV_REMOVE: return DRVCNF_RESTART;
734
735 case ACMDM_DRIVER_NOTIFY:
736 /* no caching from other ACM drivers is done so far */
737 return MMSYSERR_NOERROR;
738
739 case ACMDM_DRIVER_DETAILS:
740 return ADPCM_DriverDetails((PACMDRIVERDETAILSW)dwParam1);
741
742 case ACMDM_FORMATTAG_DETAILS:
743 return ADPCM_FormatTagDetails((PACMFORMATTAGDETAILSW)dwParam1, dwParam2);
744
745 case ACMDM_FORMAT_DETAILS:
746 return ADPCM_FormatDetails((PACMFORMATDETAILSW)dwParam1, dwParam2);
747
748 case ACMDM_FORMAT_SUGGEST:
749 return ADPCM_FormatSuggest((PACMDRVFORMATSUGGEST)dwParam1);
750
751 case ACMDM_STREAM_OPEN:
752 return ADPCM_StreamOpen((PACMDRVSTREAMINSTANCE)dwParam1);
753
754 case ACMDM_STREAM_CLOSE:
755 return ADPCM_StreamClose((PACMDRVSTREAMINSTANCE)dwParam1);
756
757 case ACMDM_STREAM_SIZE:
758 return ADPCM_StreamSize((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMSIZE)dwParam2);
759
760 case ACMDM_STREAM_CONVERT:
761 return ADPCM_StreamConvert((PACMDRVSTREAMINSTANCE)dwParam1, (PACMDRVSTREAMHEADER)dwParam2);
762
763 case ACMDM_HARDWARE_WAVE_CAPS_INPUT:
764 case ACMDM_HARDWARE_WAVE_CAPS_OUTPUT:
765 /* this converter is not a hardware driver */
766 case ACMDM_FILTERTAG_DETAILS:
767 case ACMDM_FILTER_DETAILS:
768 /* this converter is not a filter */
769 case ACMDM_STREAM_RESET:
770 /* only needed for asynchronous driver... we aren't, so just say it */
771 return MMSYSERR_NOTSUPPORTED;
772 case ACMDM_STREAM_PREPARE:
773 case ACMDM_STREAM_UNPREPARE:
774 /* nothing special to do here... so don't do anything */
775 return MMSYSERR_NOERROR;
776
777 default:
778 return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
779 }
780 return 0;
781 }
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