git.oblomov.eu Git - wine/blob - dlls/winmm/wavemap/wavemap.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2 /*
   3  * Wine Wave mapper driver
   4  *
   5  * Copyright    1999 Eric Pouech
   6  */
   7
   8 /* TODOs
   9  *      + implement wavein as waveout has been implemented
  10  *      + better protection against evilish dwUser parameters
  11  *      + use asynchronous ACM conversion
  12  */
  13
  14 #include "winuser.h"
  15 #include "driver.h"
  16 #include "mmddk.h"
  17 #include "msacm.h"
  18 #include "debugtools.h"
  19
  20 DEFAULT_DEBUG_CHANNEL(msacm)
  21
  22 typedef struct tagWAVEMAPDATA {
  23     struct tagWAVEMAPDATA*      self;
  24     HWAVE       hWave;
  25     HACMSTREAM  hAcmStream;
  26     /* needed data to filter callbacks. Only needed when hAcmStream is not 0 */
  27     DWORD       dwCallback;
  28     DWORD       dwClientInstance;
  29     DWORD       dwFlags;
  30     MMRESULT (WINAPI *acmStreamOpen)(LPHACMSTREAM, HACMDRIVER, LPWAVEFORMATEX, LPWAVEFORMATEX, LPWAVEFILTER, DWORD, DWORD, DWORD);
  31     MMRESULT (WINAPI *acmStreamClose)(HACMSTREAM, DWORD);
  32     MMRESULT (WINAPI *acmStreamSize)(HACMSTREAM, DWORD, LPDWORD, DWORD);
  33     MMRESULT (WINAPI *acmStreamConvert)(HACMSTREAM, PACMSTREAMHEADER, DWORD);
  34     MMRESULT (WINAPI *acmStreamPrepareHeader)(HACMSTREAM, PACMSTREAMHEADER, DWORD);
  35     MMRESULT (WINAPI *acmStreamUnprepareHeader)(HACMSTREAM, PACMSTREAMHEADER, DWORD);
  36 } WAVEMAPDATA;
  37
  38 static  BOOL    WAVEMAP_IsData(WAVEMAPDATA* wm)
  39 {
  40     return (!IsBadReadPtr(wm, sizeof(WAVEMAPDATA)) && wm->self == wm);
  41 }
  42
  43 /*======================================================================*
  44  *                  WAVE OUT part                                       *
  45  *======================================================================*/
  46
  47 static void     CALLBACK WAVEMAP_DstCallback(HDRVR hDev, UINT uMsg, DWORD dwInstance,
  48                                              DWORD dwParam1, DWORD dwParam2)
  49 {
  50     WAVEMAPDATA*        wom = (WAVEMAPDATA*)dwInstance;
  51
  52     TRACE("(0x%x %u %ld %ld %ld);\n", hDev, uMsg, dwInstance, dwParam1, dwParam2);
  53
  54     switch (uMsg) {
  55     case WOM_OPEN:
  56     case WOM_CLOSE:
  57         /* dwParam1 & dwParam2 are supposed to be 0, nothing to do */
  58         break;
  59     case WOM_DONE:
  60         {
  61             LPWAVEHDR           lpWaveHdrDst = (LPWAVEHDR)dwParam1;
  62             PACMSTREAMHEADER    ash = (PACMSTREAMHEADER)((LPSTR)lpWaveHdrDst - sizeof(ACMSTREAMHEADER));
  63             LPWAVEHDR           lpWaveHdrSrc = (LPWAVEHDR)ash->dwUser;
  64
  65             lpWaveHdrSrc->dwFlags &= ~WHDR_INQUEUE;
  66             lpWaveHdrSrc->dwFlags |= WHDR_DONE;
  67             dwParam1 = (DWORD)lpWaveHdrSrc;
  68         }
  69         break;
  70     default:
  71         ERR("Unknown msg %u\n", uMsg);
  72     }
  73
  74     DriverCallback(wom->dwCallback, wom->dwFlags, hDev, uMsg,
  75                    wom->dwClientInstance, dwParam1, dwParam2);
  76 }
  77
  78 static  DWORD   wodOpenHelper(WAVEMAPDATA* wom, UINT idx,
  79                               LPWAVEOPENDESC lpDesc, LPWAVEFORMATEX lpwfx,
  80                               DWORD dwFlags)
  81 {
  82     DWORD       ret;
  83
  84     /* destination is always PCM, so the formulas below apply */
  85     lpwfx->nBlockAlign = (lpwfx->nChannels * lpwfx->wBitsPerSample) / 8;
  86     lpwfx->nAvgBytesPerSec = lpwfx->nSamplesPerSec * lpwfx->nBlockAlign;
  87     ret = wom->acmStreamOpen(&wom->hAcmStream, 0, lpDesc->lpFormat, lpwfx, NULL, 0L, 0L,
  88                              (dwFlags & WAVE_FORMAT_QUERY) ? ACM_STREAMOPENF_QUERY : 0L);
  89     if (ret != MMSYSERR_NOERROR)
  90         return ret;
  91     return waveOutOpen(&wom->hWave, idx, lpwfx, (DWORD)WAVEMAP_DstCallback,
  92                        (DWORD)wom, (dwFlags & ~CALLBACK_TYPEMASK) | CALLBACK_FUNCTION);
  93 }
  94
  95 static  DWORD   wodOpen(LPDWORD lpdwUser, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
  96 {
  97     UINT                nd = waveOutGetNumDevs();
  98     UINT                i;
  99     WAVEMAPDATA*        wom = HeapAlloc(GetProcessHeap(), 0, sizeof(WAVEMAPDATA));
 100     WAVEFORMATEX        wfx;
 101
 102     TRACE("(%p %p %08lx\n", lpdwUser, lpDesc, dwFlags);
 103
 104     if (!wom)
 105         return MMSYSERR_NOMEM;
 106
 107     wom->self = wom;
 108
 109     for (i = 0; i < nd; i++) {
 110         /* if no ACM stuff is involved, no need to handle callbacks at this
 111          * level, this will be done transparently
 112          */
 113         if (waveOutOpen(&wom->hWave, i, lpDesc->lpFormat, lpDesc->dwCallback,
 114                         lpDesc->dwInstance, dwFlags) == MMSYSERR_NOERROR) {
 115             wom->hAcmStream = 0;
 116             goto found;
 117         }
 118     }
 119
 120     /* temporary hack until real builtin dll loading is available */
 121     do {
 122         HMODULE hModule = LoadLibraryA("msacm32.dll");
 123
 124         wom->acmStreamOpen            = (void*)GetProcAddress(hModule, "acmStreamOpen");
 125         wom->acmStreamClose           = (void*)GetProcAddress(hModule, "acmStreamClose");
 126         wom->acmStreamSize            = (void*)GetProcAddress(hModule, "acmStreamSize");
 127         wom->acmStreamConvert         = (void*)GetProcAddress(hModule, "acmStreamConvert");
 128         wom->acmStreamPrepareHeader   = (void*)GetProcAddress(hModule, "acmStreamPrepareHeader");
 129         wom->acmStreamUnprepareHeader = (void*)GetProcAddress(hModule, "acmStreamUnprepareHeader");
 130     } while (0);
 131
 132     wfx.wFormatTag = WAVE_FORMAT_PCM;
 133     wfx.cbSize = 0; /* normally, this field is not used for PCM format, just in case */
 134     /* try some ACM stuff */
 135
 136     wom->dwCallback = lpDesc->dwCallback;
 137     wom->dwFlags = dwFlags;
 138     wom->dwClientInstance = lpDesc->dwInstance;
 139
 140 #define TRY(sps,bps)    wfx.nSamplesPerSec = (sps); wfx.wBitsPerSample = (bps); \
 141                         if (wodOpenHelper(wom, i, lpDesc, &wfx, dwFlags) == MMSYSERR_NOERROR) goto found;
 142
 143     for (i = 0; i < nd; i++) {
 144         /* first try with same stereo/mono option as source */
 145         wfx.nChannels = lpDesc->lpFormat->nChannels;
 146         TRY(44100, 8);
 147         TRY(22050, 8);
 148         TRY(11025, 8);
 149
 150         /* 2^3 => 1, 1^3 => 2, so if stereo, try mono (and the other way around) */
 151         wfx.nChannels ^= 3;
 152         TRY(44100, 8);
 153         TRY(22050, 8);
 154         TRY(11025, 8);
 155     }
 156 #undef TRY
 157
 158     HeapFree(GetProcessHeap(), 0, wom);
 159     return MMSYSERR_ALLOCATED;
 160 found:
 161     if (dwFlags & WAVE_FORMAT_QUERY) {
 162         lpDesc->hWave = 0;
 163         *lpdwUser = 0L;
 164         HeapFree(GetProcessHeap(), 0, wom);
 165     } else {
 166         lpDesc->hWave = wom->hWave;
 167         *lpdwUser = (DWORD)wom;
 168     }
 169     return MMSYSERR_NOERROR;
 170 }
 171
 172 static  DWORD   wodClose(WAVEMAPDATA* wom)
 173 {
 174     DWORD ret = waveOutClose(wom->hWave);
 175
 176     if (ret == MMSYSERR_NOERROR) {
 177         if (wom->hAcmStream) {
 178             ret = wom->acmStreamClose(wom->hAcmStream, 0);
 179         }
 180         if (ret == MMSYSERR_NOERROR) {
 181             HeapFree(GetProcessHeap(), 0, wom);
 182         }
 183     }
 184     return ret;
 185 }
 186
 187 static  DWORD   wodWrite(WAVEMAPDATA* wom, LPWAVEHDR lpWaveHdrSrc, DWORD dwParam2)
 188 {
 189     PACMSTREAMHEADER    ash;
 190     LPWAVEHDR           lpWaveHdrDst;
 191
 192     if (!wom->hAcmStream) {
 193         return waveOutWrite(wom->hWave, lpWaveHdrSrc, dwParam2);
 194     }
 195
 196     lpWaveHdrSrc->dwFlags |= WHDR_INQUEUE;
 197     ash = (PACMSTREAMHEADER)lpWaveHdrSrc->reserved;
 198     if (wom->acmStreamConvert(wom->hAcmStream, ash, 0L) != MMSYSERR_NOERROR)
 199         return MMSYSERR_ERROR;
 200
 201     lpWaveHdrDst = (LPWAVEHDR)((LPSTR)ash + sizeof(ACMSTREAMHEADER));
 202     lpWaveHdrDst->dwBufferLength = ash->cbDstLengthUsed;
 203     return waveOutWrite(wom->hWave, lpWaveHdrDst, sizeof(*lpWaveHdrDst));
 204 }
 205
 206 static  DWORD   wodPrepare(WAVEMAPDATA* wom, LPWAVEHDR lpWaveHdrSrc, DWORD dwParam2)
 207 {
 208     PACMSTREAMHEADER    ash;
 209     DWORD               size;
 210     DWORD               dwRet;
 211     LPWAVEHDR           lpWaveHdrDst;
 212
 213     if (!wom->hAcmStream) {
 214         return waveOutPrepareHeader(wom->hWave, lpWaveHdrSrc, dwParam2);
 215     }
 216     if (wom->acmStreamSize(wom->hAcmStream, lpWaveHdrSrc->dwBufferLength, &size, ACM_STREAMSIZEF_SOURCE) != MMSYSERR_NOERROR)
 217         return MMSYSERR_ERROR;
 218
 219     ash = HeapAlloc(GetProcessHeap(), 0, sizeof(ACMSTREAMHEADER) + sizeof(WAVEHDR) + size);
 220     if (ash == NULL)
 221         return MMSYSERR_NOMEM;
 222
 223     ash->cbStruct = sizeof(*ash);
 224     ash->fdwStatus = 0L;
 225     ash->dwUser = (DWORD)lpWaveHdrSrc;
 226     ash->pbSrc = lpWaveHdrSrc->lpData;
 227     ash->cbSrcLength = lpWaveHdrSrc->dwBufferLength;
 228     /* ash->cbSrcLengthUsed */
 229     ash->dwSrcUser = lpWaveHdrSrc->dwUser; /* FIXME ? */
 230     ash->pbDst = (LPSTR)ash + sizeof(ACMSTREAMHEADER) + sizeof(WAVEHDR);
 231     ash->cbDstLength = size;
 232     /* ash->cbDstLengthUsed */
 233     ash->dwDstUser = 0; /* FIXME ? */
 234     dwRet = wom->acmStreamPrepareHeader(wom->hAcmStream, ash, 0L);
 235     if (dwRet != MMSYSERR_NOERROR)
 236         goto errCleanUp;
 237
 238     lpWaveHdrDst = (LPWAVEHDR)((LPSTR)ash + sizeof(ACMSTREAMHEADER));
 239     lpWaveHdrDst->lpData = ash->pbDst;
 240     lpWaveHdrDst->dwBufferLength = size; /* conversion is not done yet */
 241     lpWaveHdrDst->dwFlags = 0;
 242     lpWaveHdrDst->dwLoops = 0;
 243     dwRet = waveOutPrepareHeader(wom->hWave, lpWaveHdrDst, sizeof(*lpWaveHdrDst));
 244     if (dwRet != MMSYSERR_NOERROR)
 245         goto errCleanUp;
 246
 247     lpWaveHdrSrc->reserved = (DWORD)ash;
 248     lpWaveHdrSrc->dwFlags = WHDR_PREPARED;
 249     TRACE("=> (0)\n");
 250     return MMSYSERR_NOERROR;
 251 errCleanUp:
 252     TRACE("=> (%ld)\n", dwRet);
 253     HeapFree(GetProcessHeap(), 0, ash);
 254     return dwRet;
 255 }
 256
 257 static  DWORD   wodUnprepare(WAVEMAPDATA* wom, LPWAVEHDR lpWaveHdrSrc, DWORD dwParam2)
 258 {
 259     PACMSTREAMHEADER    ash;
 260     LPWAVEHDR           lpWaveHdrDst;
 261     DWORD               dwRet1, dwRet2;
 262
 263     if (!wom->hAcmStream) {
 264         return waveOutUnprepareHeader(wom->hWave, lpWaveHdrSrc, dwParam2);
 265     }
 266     ash = (PACMSTREAMHEADER)lpWaveHdrSrc->reserved;
 267     dwRet1 = wom->acmStreamUnprepareHeader(wom->hAcmStream, ash, 0L);
 268
 269     lpWaveHdrDst = (LPWAVEHDR)((LPSTR)ash + sizeof(ACMSTREAMHEADER));
 270     dwRet2 = waveOutUnprepareHeader(wom->hWave, lpWaveHdrDst, sizeof(*lpWaveHdrDst));
 271
 272     HeapFree(GetProcessHeap(), 0, ash);
 273
 274     lpWaveHdrSrc->dwFlags &= ~WHDR_PREPARED;
 275     return (dwRet1 == MMSYSERR_NOERROR) ? dwRet2 : dwRet1;
 276 }
 277
 278 static  DWORD   wodGetPosition(WAVEMAPDATA* wom, LPMMTIME lpTime, DWORD dwParam2)
 279 {
 280     return waveOutGetPosition(wom->hWave, lpTime, dwParam2);
 281 }
 282
 283 static  DWORD   wodGetDevCaps(UINT wDevID, WAVEMAPDATA* wom, LPWAVEOUTCAPSA lpWaveCaps, DWORD dwParam2)
 284 {
 285     /* if opened low driver, forward message */
 286     if (WAVEMAP_IsData(wom))
 287         return waveOutGetDevCapsA(wom->hWave, lpWaveCaps, dwParam2);
 288     /* otherwise, return caps of mapper itself */
 289     if (wDevID == (UINT)-1 || wDevID == (UINT16)-1) {
 290         lpWaveCaps->wMid = 0x00FF;
 291         lpWaveCaps->wPid = 0x0001;
 292         lpWaveCaps->vDriverVersion = 0x0100;
 293         strcpy(lpWaveCaps->szPname, "Wine wave out mapper");
 294         lpWaveCaps->dwFormats =
 295             WAVE_FORMAT_4M08 | WAVE_FORMAT_4S08 | WAVE_FORMAT_4M16 | WAVE_FORMAT_4S16 |
 296             WAVE_FORMAT_2M08 | WAVE_FORMAT_2S08 | WAVE_FORMAT_2M16 | WAVE_FORMAT_2S16 |
 297             WAVE_FORMAT_1M08 | WAVE_FORMAT_1S08 | WAVE_FORMAT_1M16 | WAVE_FORMAT_1S16;
 298         lpWaveCaps->wChannels = 2;
 299         lpWaveCaps->dwSupport = WAVECAPS_VOLUME | WAVECAPS_LRVOLUME;
 300
 301         return MMSYSERR_NOERROR;
 302     }
 303     ERR("This shouldn't happen\n");
 304     return MMSYSERR_ERROR;
 305 }
 306
 307 static  DWORD   wodGetVolume(UINT wDevID, WAVEMAPDATA* wom, LPDWORD lpVol)
 308 {
 309     if (WAVEMAP_IsData(wom))
 310         return waveOutGetVolume(wom->hWave, lpVol);
 311     return MMSYSERR_NOERROR;
 312 }
 313
 314 static  DWORD   wodSetVolume(UINT wDevID, WAVEMAPDATA* wom, DWORD vol)
 315 {
 316     if (WAVEMAP_IsData(wom))
 317         return waveOutSetVolume(wom->hWave, vol);
 318     return MMSYSERR_NOERROR;
 319 }
 320
 321 static  DWORD   wodPause(WAVEMAPDATA* wom)
 322 {
 323     return waveOutPause(wom->hWave);
 324 }
 325
 326 static  DWORD   wodRestart(WAVEMAPDATA* wom)
 327 {
 328     return waveOutRestart(wom->hWave);
 329 }
 330
 331 static  DWORD   wodReset(WAVEMAPDATA* wom)
 332 {
 333     return waveOutReset(wom->hWave);
 334 }
 335
 336 /**************************************************************************
 337  *                              WAVEMAP_wodMessage      [sample driver]
 338  */
 339 DWORD WINAPI WAVEMAP_wodMessage(UINT wDevID, UINT wMsg, DWORD dwUser,
 340                                 DWORD dwParam1, DWORD dwParam2)
 341 {
 342     TRACE("(%u, %04X, %08lX, %08lX, %08lX);\n",
 343           wDevID, wMsg, dwUser, dwParam1, dwParam2);
 344
 345     switch (wMsg) {
 346     case DRVM_INIT:
 347     case DRVM_EXIT:
 348     case DRVM_ENABLE:
 349     case DRVM_DISABLE:
 350         /* FIXME: Pretend this is supported */
 351         return 0;
 352     case WODM_OPEN:             return wodOpen          ((LPDWORD)dwUser,      (LPWAVEOPENDESC)dwParam1,dwParam2);
 353     case WODM_CLOSE:            return wodClose         ((WAVEMAPDATA*)dwUser);
 354     case WODM_WRITE:            return wodWrite         ((WAVEMAPDATA*)dwUser, (LPWAVEHDR)dwParam1,     dwParam2);
 355     case WODM_PAUSE:            return wodPause         ((WAVEMAPDATA*)dwUser);
 356     case WODM_GETPOS:           return wodGetPosition   ((WAVEMAPDATA*)dwUser, (LPMMTIME)dwParam1,      dwParam2);
 357     case WODM_BREAKLOOP:        return MMSYSERR_NOTSUPPORTED;
 358     case WODM_PREPARE:          return wodPrepare       ((WAVEMAPDATA*)dwUser, (LPWAVEHDR)dwParam1,     dwParam2);
 359     case WODM_UNPREPARE:        return wodUnprepare     ((WAVEMAPDATA*)dwUser, (LPWAVEHDR)dwParam1,     dwParam2);
 360     case WODM_GETDEVCAPS:       return wodGetDevCaps    (wDevID, (WAVEMAPDATA*)dwUser, (LPWAVEOUTCAPSA)dwParam1,dwParam2);
 361     case WODM_GETNUMDEVS:       return 1;
 362     case WODM_GETPITCH:         return MMSYSERR_NOTSUPPORTED;
 363     case WODM_SETPITCH:         return MMSYSERR_NOTSUPPORTED;
 364     case WODM_GETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
 365     case WODM_SETPLAYBACKRATE:  return MMSYSERR_NOTSUPPORTED;
 366     case WODM_GETVOLUME:        return wodGetVolume     (wDevID, (WAVEMAPDATA*)dwUser, (LPDWORD)dwParam1);
 367     case WODM_SETVOLUME:        return wodSetVolume     (wDevID, (WAVEMAPDATA*)dwUser, dwParam1);
 368     case WODM_RESTART:          return wodRestart       ((WAVEMAPDATA*)dwUser);
 369     case WODM_RESET:            return wodReset         ((WAVEMAPDATA*)dwUser);
 370     default:
 371         FIXME("unknown message %d!\n", wMsg);
 372     }
 373     return MMSYSERR_NOTSUPPORTED;
 374 }
 375
 376 /*======================================================================*
 377  *                  WAVE IN part                                        *
 378  *======================================================================*/
 379
 380 static  DWORD   widOpen(LPDWORD lpdwUser, LPWAVEOPENDESC lpDesc, DWORD dwFlags)
 381 {
 382     UINT                nd = waveInGetNumDevs();
 383     UINT                i;
 384     WAVEMAPDATA*        wim = HeapAlloc(GetProcessHeap(), 0, sizeof(WAVEMAPDATA));
 385
 386     TRACE("(%p %p %08lx\n", lpdwUser, lpDesc, dwFlags);
 387
 388     wim->self = wim;
 389
 390     for (i = 0; i < nd; i++) {
 391         if (waveInOpen(&wim->hWave, i, lpDesc->lpFormat, lpDesc->dwCallback,
 392                         lpDesc->dwInstance, dwFlags) == MMSYSERR_NOERROR) {
 393             lpDesc->hWave = wim->hWave;
 394             *lpdwUser = (DWORD)wim;
 395             return MMSYSERR_NOERROR;
 396         }
 397     }
 398     HeapFree(GetProcessHeap(), 0, wim);
 399     return MMSYSERR_ALLOCATED;
 400 }
 401
 402 static  DWORD   widClose(WAVEMAPDATA* wim)
 403 {
 404     DWORD ret = waveInClose(wim->hWave);
 405     if (ret == MMSYSERR_NOERROR)
 406         HeapFree(GetProcessHeap(), 0, wim);
 407     return ret;
 408 }
 409
 410 static  DWORD   widAddBuffer(WAVEMAPDATA* wim, LPWAVEHDR lpWaveHdr, DWORD dwParam2)
 411 {
 412     return waveInAddBuffer(wim->hWave, lpWaveHdr, dwParam2);
 413 }
 414
 415 static  DWORD   widPrepare(WAVEMAPDATA* wim, LPWAVEHDR lpWaveHdr, DWORD dwParam2)
 416 {
 417     return waveInPrepareHeader(wim->hWave, lpWaveHdr, dwParam2);
 418 }
 419
 420 static  DWORD   widUnprepare(WAVEMAPDATA* wim, LPWAVEHDR lpWaveHdr, DWORD dwParam2)
 421 {
 422     return waveInUnprepareHeader(wim->hWave, lpWaveHdr, dwParam2);
 423 }
 424
 425 static  DWORD   widGetPosition(WAVEMAPDATA* wim, LPMMTIME lpTime, DWORD dwParam2)
 426 {
 427     return waveInGetPosition(wim->hWave, lpTime, dwParam2);
 428 }
 429
 430 static  DWORD   widGetDevCaps(UINT wDevID, WAVEMAPDATA* wim, LPWAVEINCAPSA lpWaveCaps, DWORD dwParam2)
 431 {
 432     /* if opened low driver, forward message */
 433     if (WAVEMAP_IsData(wim))
 434         return waveInGetDevCapsA(wim->hWave, lpWaveCaps, dwParam2);
 435     /* otherwise, return caps of mapper itself */
 436     if (wDevID == (UINT)-1 || wDevID == (UINT16)-1) {
 437         lpWaveCaps->wMid = 0x00FF;
 438         lpWaveCaps->wPid = 0x0001;
 439         lpWaveCaps->vDriverVersion = 0x0001;
 440         strcpy(lpWaveCaps->szPname, "Wine wave in mapper");
 441         lpWaveCaps->dwFormats =
 442             WAVE_FORMAT_4M08 | WAVE_FORMAT_4S08 | WAVE_FORMAT_4M16 | WAVE_FORMAT_4S16 |
 443             WAVE_FORMAT_2M08 | WAVE_FORMAT_2S08 | WAVE_FORMAT_2M16 | WAVE_FORMAT_2S16 |
 444             WAVE_FORMAT_1M08 | WAVE_FORMAT_1S08 | WAVE_FORMAT_1M16 | WAVE_FORMAT_1S16;
 445         lpWaveCaps->wChannels = 2;
 446         return MMSYSERR_NOERROR;
 447     }
 448     ERR("This shouldn't happen\n");
 449     return MMSYSERR_ERROR;
 450 }
 451
 452 static  DWORD   widStop(WAVEMAPDATA* wim)
 453 {
 454     return waveInStop(wim->hWave);
 455 }
 456
 457 static  DWORD   widStart(WAVEMAPDATA* wim)
 458 {
 459     return waveInStart(wim->hWave);
 460 }
 461
 462 static  DWORD   widReset(WAVEMAPDATA* wim)
 463 {
 464     return waveInReset(wim->hWave);
 465 }
 466
 467 /**************************************************************************
 468  *                              WAVEMAP_widMessage      [sample driver]
 469  */
 470 DWORD WINAPI WAVEMAP_widMessage(WORD wDevID, WORD wMsg, DWORD dwUser,
 471                                 DWORD dwParam1, DWORD dwParam2)
 472 {
 473     TRACE("(%u, %04X, %08lX, %08lX, %08lX);\n",
 474           wDevID, wMsg, dwUser, dwParam1, dwParam2);
 475
 476     switch (wMsg) {
 477     case DRVM_INIT:
 478     case DRVM_EXIT:
 479     case DRVM_ENABLE:
 480     case DRVM_DISABLE:
 481         /* FIXME: Pretend this is supported */
 482         return 0;
 483
 484     case WIDM_OPEN:             return widOpen          ((LPDWORD)dwUser,     (LPWAVEOPENDESC)dwParam1, dwParam2);
 485     case WIDM_CLOSE:            return widClose         ((WAVEMAPDATA*)dwUser);
 486
 487     case WIDM_ADDBUFFER:        return widAddBuffer     ((WAVEMAPDATA*)dwUser, (LPWAVEHDR)dwParam1,     dwParam2);
 488     case WIDM_PREPARE:          return widPrepare       ((WAVEMAPDATA*)dwUser, (LPWAVEHDR)dwParam1,     dwParam2);
 489     case WIDM_UNPREPARE:        return widUnprepare     ((WAVEMAPDATA*)dwUser, (LPWAVEHDR)dwParam1,     dwParam2);
 490     case WIDM_GETDEVCAPS:       return widGetDevCaps    (wDevID, (WAVEMAPDATA*)dwUser, (LPWAVEINCAPSA)dwParam1, dwParam2);
 491     case WIDM_GETNUMDEVS:       return 1;
 492     case WIDM_GETPOS:           return widGetPosition   ((WAVEMAPDATA*)dwUser, (LPMMTIME)dwParam1,      dwParam2);
 493     case WIDM_RESET:            return widReset         ((WAVEMAPDATA*)dwUser);
 494     case WIDM_START:            return widStart         ((WAVEMAPDATA*)dwUser);
 495     case WIDM_STOP:             return widStop          ((WAVEMAPDATA*)dwUser);
 496     default:
 497         FIXME("unknown message %u!\n", wMsg);
 498     }
 499     return MMSYSERR_NOTSUPPORTED;
 500 }
 501
 502 /*======================================================================*
 503  *                  Driver part                                         *
 504  *======================================================================*/
 505
 506 static  struct WINE_WAVEMAP* oss = NULL;
 507
 508 /**************************************************************************
 509  *                              WAVEMAP_drvOpen                 [internal]
 510  */
 511 static  DWORD   WAVEMAP_drvOpen(LPSTR str)
 512 {
 513     if (oss)
 514         return 0;
 515
 516     /* I know, this is ugly, but who cares... */
 517     oss = (struct WINE_WAVEMAP*)1;
 518     return 1;
 519 }
 520
 521 /**************************************************************************
 522  *                              WAVEMAP_drvClose                [internal]
 523  */
 524 static  DWORD   WAVEMAP_drvClose(DWORD dwDevID)
 525 {
 526     if (oss) {
 527         oss = NULL;
 528         return 1;
 529     }
 530     return 0;
 531 }
 532
 533 /**************************************************************************
 534  *                              WAVEMAP_DriverProc              [internal]
 535  */
 536 LONG CALLBACK   WAVEMAP_DriverProc(DWORD dwDevID, HDRVR hDriv, DWORD wMsg,
 537                                    DWORD dwParam1, DWORD dwParam2)
 538 {
 539 /* EPP     TRACE("(%08lX, %04X, %08lX, %08lX, %08lX)\n",  */
 540 /* EPP    dwDevID, hDriv, wMsg, dwParam1, dwParam2); */
 541
 542     switch(wMsg) {
 543     case DRV_LOAD:              return 1;
 544     case DRV_FREE:              return 1;
 545     case DRV_OPEN:              return WAVEMAP_drvOpen((LPSTR)dwParam1);
 546     case DRV_CLOSE:             return WAVEMAP_drvClose(dwDevID);
 547     case DRV_ENABLE:            return 1;
 548     case DRV_DISABLE:           return 1;
 549     case DRV_QUERYCONFIGURE:    return 1;
 550     case DRV_CONFIGURE:         MessageBoxA(0, "WAVEMAP MultiMedia Driver !", "OSS Driver", MB_OK);     return 1;
 551     case DRV_INSTALL:           return DRVCNF_RESTART;
 552     case DRV_REMOVE:            return DRVCNF_RESTART;
 553     default:
 554         return DefDriverProc(dwDevID, hDriv, wMsg, dwParam1, dwParam2);
 555     }
 556 }
 557
 558