dlls/winmm/playsound.c

   1 /* -*- tab-width: 8; c-basic-offset: 4 -*- */
   2
   3 /*
   4  * MMSYTEM functions
   5  *
   6  * Copyright 1993      Martin Ayotte
   7  *           1998-2002 Eric Pouech
   8  *
   9  * This library is free software; you can redistribute it and/or
  10  * modify it under the terms of the GNU Lesser General Public
  11  * License as published by the Free Software Foundation; either
  12  * version 2.1 of the License, or (at your option) any later version.
  13  *
  14  * This library is distributed in the hope that it will be useful,
  15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  17  * Lesser General Public License for more details.
  18  *
  19  * You should have received a copy of the GNU Lesser General Public
  20  * License along with this library; if not, write to the Free Software
  21  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  22  */
  23
  24 #include <stdarg.h>
  25 #include <string.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "mmsystem.h"
  30 #include "wingdi.h"
  31 #include "winuser.h"
  32 #include "winreg.h"
  33 #include "winemm.h"
  34 #include "winternl.h"
  35
  36 #include "wine/debug.h"
  37
  38 WINE_DEFAULT_DEBUG_CHANNEL(winmm);
  39
  40 typedef struct tagWINE_PLAYSOUND
  41 {
  42     unsigned                    bLoop : 1,
  43                                 bAlloc : 1;
  44     LPCWSTR                     pszSound;
  45     HMODULE                     hMod;
  46     DWORD                       fdwSound;
  47     HANDLE                      hThread;
  48     HWAVEOUT                    hWave;
  49     struct tagWINE_PLAYSOUND*   lpNext;
  50 } WINE_PLAYSOUND;
  51
  52 static WINE_PLAYSOUND *PlaySoundList;
  53
  54 static HMMIO    get_mmioFromFile(LPCWSTR lpszName)
  55 {
  56     HMMIO       ret;
  57     WCHAR       buf[256];
  58     LPWSTR      dummy;
  59
  60     ret = mmioOpenW((LPWSTR)lpszName, NULL,
  61                     MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
  62     if (ret != 0) return ret;
  63     if (SearchPathW(NULL, lpszName, NULL, sizeof(buf)/sizeof(buf[0]), buf, &dummy))
  64     {
  65         return mmioOpenW(buf, NULL,
  66                          MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
  67     }
  68     return 0;
  69 }
  70
  71 static HMMIO    get_mmioFromProfile(UINT uFlags, LPCWSTR lpszName)
  72 {
  73     WCHAR       str[128];
  74     LPWSTR      ptr;
  75     HMMIO       hmmio;
  76     HKEY        hRegSnd, hRegApp, hScheme, hSnd;
  77     DWORD       err, type, count;
  78
  79     static const WCHAR  wszSounds[] = {'S','o','u','n','d','s',0};
  80     static const WCHAR  wszDefault[] = {'D','e','f','a','u','l','t',0};
  81     static const WCHAR  wszKey[] = {'A','p','p','E','v','e','n','t','s','\\',
  82                                     'S','c','h','e','m','e','s','\\',
  83                                     'A','p','p','s',0};
  84     static const WCHAR  wszDotDefault[] = {'.','D','e','f','a','u','l','t',0};
  85     static const WCHAR  wszDotCurrent[] = {'.','C','u','r','r','e','n','t',0};
  86     static const WCHAR  wszNull[] = {0};
  87
  88     TRACE("searching in SystemSound list for %s\n", debugstr_w(lpszName));
  89     GetProfileStringW(wszSounds, lpszName, wszNull, str, sizeof(str)/sizeof(str[0]));
  90     if (lstrlenW(str) == 0)
  91     {
  92         if (uFlags & SND_NODEFAULT) goto next;
  93         GetProfileStringW(wszSounds, wszDefault, wszNull, str, sizeof(str)/sizeof(str[0]));
  94         if (lstrlenW(str) == 0) goto next;
  95     }
  96     for (ptr = str; *ptr && *ptr != ','; ptr++);
  97     if (*ptr) *ptr = 0;
  98     hmmio = mmioOpenW(str, NULL, MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
  99     if (hmmio != 0) return hmmio;
 100  next:
 101     /* we look up the registry under
 102      *      HKCU\AppEvents\Schemes\Apps\.Default
 103      *      HKCU\AppEvents\Schemes\Apps\<AppName>
 104      */
 105     if (RegOpenKeyW(HKEY_CURRENT_USER, wszKey, &hRegSnd) != 0) goto none;
 106     if (uFlags & SND_APPLICATION)
 107     {
 108         DWORD len;
 109
 110         err = 1; /* error */
 111         len = GetModuleFileNameW(0, str, sizeof(str)/sizeof(str[0]));
 112         if (len > 0 && len < sizeof(str)/sizeof(str[0]))
 113         {
 114             for (ptr = str + lstrlenW(str) - 1; ptr >= str; ptr--)
 115             {
 116                 if (*ptr == '.') *ptr = 0;
 117                 if (*ptr == '\\')
 118                 {
 119                     err = RegOpenKeyW(hRegSnd, ptr+1, &hRegApp);
 120                     break;
 121                 }
 122             }
 123         }
 124     }
 125     else
 126     {
 127         err = RegOpenKeyW(hRegSnd, wszDotDefault, &hRegApp);
 128     }
 129     RegCloseKey(hRegSnd);
 130     if (err != 0) goto none;
 131     err = RegOpenKeyW(hRegApp, lpszName, &hScheme);
 132     RegCloseKey(hRegApp);
 133     if (err != 0) goto none;
 134     /* what's the difference between .Current and .Default ? */
 135     err = RegOpenKeyW(hScheme, wszDotDefault, &hSnd);
 136     if (err != 0)
 137     {
 138         err = RegOpenKeyW(hScheme, wszDotCurrent, &hSnd);
 139         RegCloseKey(hScheme);
 140         if (err != 0)
 141             goto none;
 142     }
 143     count = sizeof(str)/sizeof(str[0]);
 144     err = RegQueryValueExW(hSnd, NULL, 0, &type, (LPBYTE)str, &count);
 145     RegCloseKey(hSnd);
 146     if (err != 0 || !*str) goto none;
 147     hmmio = mmioOpenW(str, NULL, MMIO_ALLOCBUF | MMIO_READ | MMIO_DENYWRITE);
 148     if (hmmio) return hmmio;
 149  none:
 150     WARN("can't find SystemSound=%s !\n", debugstr_w(lpszName));
 151     return 0;
 152 }
 153
 154 struct playsound_data
 155 {
 156     HANDLE      hEvent;
 157     LONG        dwEventCount;
 158 };
 159
 160 static void CALLBACK PlaySound_Callback(HWAVEOUT hwo, UINT uMsg,
 161                                         DWORD dwInstance,
 162                                         DWORD dwParam1, DWORD dwParam2)
 163 {
 164     struct playsound_data*      s = (struct playsound_data*)dwInstance;
 165
 166     switch (uMsg) {
 167     case WOM_OPEN:
 168     case WOM_CLOSE:
 169         break;
 170     case WOM_DONE:
 171         InterlockedIncrement(&s->dwEventCount);
 172         TRACE("Returning waveHdr=%x\n", dwParam1);
 173         SetEvent(s->hEvent);
 174         break;
 175     default:
 176         ERR("Unknown uMsg=%d\n", uMsg);
 177     }
 178 }
 179
 180 static void PlaySound_WaitDone(struct playsound_data* s)
 181 {
 182     for (;;) {
 183         ResetEvent(s->hEvent);
 184         if (InterlockedDecrement(&s->dwEventCount) >= 0) break;
 185         InterlockedIncrement(&s->dwEventCount);
 186
 187         WaitForSingleObject(s->hEvent, INFINITE);
 188     }
 189 }
 190
 191 static BOOL PlaySound_IsString(DWORD fdwSound, const void* psz)
 192 {
 193     /* SND_RESOURCE is 0x40004 while
 194      * SND_MEMORY is 0x00004
 195      */
 196     switch (fdwSound & (SND_RESOURCE|SND_ALIAS|SND_FILENAME))
 197     {
 198     case SND_RESOURCE:  return HIWORD(psz) != 0; /* by name or by ID ? */
 199     case SND_MEMORY:    return FALSE;
 200     case SND_ALIAS:     /* what about ALIAS_ID ??? */
 201     case SND_FILENAME:
 202     case 0:             return TRUE;
 203     default:            FIXME("WTF\n"); return FALSE;
 204     }
 205 }
 206
 207 static void     PlaySound_Free(WINE_PLAYSOUND* wps)
 208 {
 209     WINE_PLAYSOUND**    p;
 210
 211     EnterCriticalSection(&WINMM_cs);
 212     for (p = &PlaySoundList; *p && *p != wps; p = &((*p)->lpNext));
 213     if (*p) *p = (*p)->lpNext;
 214     if (PlaySoundList == NULL) SetEvent(psLastEvent);
 215     LeaveCriticalSection(&WINMM_cs);
 216     if (wps->bAlloc) HeapFree(GetProcessHeap(), 0, (void*)wps->pszSound);
 217     if (wps->hThread) CloseHandle(wps->hThread);
 218     HeapFree(GetProcessHeap(), 0, wps);
 219 }
 220
 221 static WINE_PLAYSOUND*  PlaySound_Alloc(const void* pszSound, HMODULE hmod,
 222                                         DWORD fdwSound, BOOL bUnicode)
 223 {
 224     WINE_PLAYSOUND* wps;
 225
 226     wps = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*wps));
 227     if (!wps) return NULL;
 228
 229     wps->hMod = hmod;
 230     wps->fdwSound = fdwSound;
 231     if (PlaySound_IsString(fdwSound, pszSound))
 232     {
 233         if (bUnicode)
 234         {
 235             if (fdwSound & SND_ASYNC)
 236             {
 237                 LPWSTR sound = HeapAlloc(GetProcessHeap(), 0,
 238                                          (lstrlenW(pszSound)+1) * sizeof(WCHAR));
 239                 if (!sound) goto oom_error;
 240                 wps->pszSound = lstrcpyW(sound, pszSound);
 241                 wps->bAlloc = TRUE;
 242             }
 243             else
 244                 wps->pszSound = pszSound;
 245         }
 246         else
 247         {
 248             UNICODE_STRING usBuffer;
 249             RtlCreateUnicodeStringFromAsciiz(&usBuffer, pszSound);
 250             wps->pszSound = usBuffer.Buffer;
 251             if (!wps->pszSound) goto oom_error;
 252             wps->bAlloc = TRUE;
 253         }
 254     }
 255     else
 256         wps->pszSound = pszSound;
 257
 258     return wps;
 259  oom_error:
 260     PlaySound_Free(wps);
 261     return NULL;
 262 }
 263
 264 static DWORD WINAPI proc_PlaySound(LPVOID arg)
 265 {
 266     WINE_PLAYSOUND*     wps = (WINE_PLAYSOUND*)arg;
 267     BOOL                bRet = FALSE;
 268     HMMIO               hmmio = 0;
 269     MMCKINFO            ckMainRIFF;
 270     MMCKINFO            mmckInfo;
 271     LPWAVEFORMATEX      lpWaveFormat = NULL;
 272     LPWAVEHDR           waveHdr = NULL;
 273     INT                 count, bufsize, left, index;
 274     struct playsound_data       s;
 275     void*               data;
 276
 277     s.hEvent = 0;
 278
 279     TRACE("SoundName=%s !\n", debugstr_w(wps->pszSound));
 280
 281     /* if resource, grab it */
 282     if ((wps->fdwSound & SND_RESOURCE) == SND_RESOURCE) {
 283         static const WCHAR wszWave[] = {'W','A','V','E',0};
 284         HRSRC   hRes;
 285         HGLOBAL hGlob;
 286
 287         if ((hRes = FindResourceW(wps->hMod, wps->pszSound, wszWave)) == 0 ||
 288             (hGlob = LoadResource(wps->hMod, hRes)) == 0)
 289             goto errCleanUp;
 290         if ((data = LockResource(hGlob)) == NULL) {
 291             FreeResource(hGlob);
 292             goto errCleanUp;
 293         }
 294         FreeResource(hGlob);
 295     } else
 296         data = (void*)wps->pszSound;
 297
 298     /* construct an MMIO stream (either in memory, or from a file */
 299     if (wps->fdwSound & SND_MEMORY)
 300     { /* NOTE: SND_RESOURCE has the SND_MEMORY bit set */
 301         MMIOINFO        mminfo;
 302
 303         memset(&mminfo, 0, sizeof(mminfo));
 304         mminfo.fccIOProc = FOURCC_MEM;
 305         mminfo.pchBuffer = (LPSTR)data;
 306         mminfo.cchBuffer = -1; /* FIXME: when a resource, could grab real size */
 307         TRACE("Memory sound %p\n", data);
 308         hmmio = mmioOpenW(NULL, &mminfo, MMIO_READ);
 309     }
 310     else if (wps->fdwSound & SND_ALIAS)
 311     {
 312         hmmio = get_mmioFromProfile(wps->fdwSound, wps->pszSound);
 313     }
 314     else if (wps->fdwSound & SND_FILENAME)
 315     {
 316         hmmio = get_mmioFromFile(wps->pszSound);
 317     }
 318     else
 319     {
 320         if ((hmmio = get_mmioFromProfile(wps->fdwSound | SND_NODEFAULT, wps->pszSound)) == 0)
 321         {
 322             if ((hmmio = get_mmioFromFile(wps->pszSound)) == 0)
 323             {
 324                 hmmio = get_mmioFromProfile(wps->fdwSound, wps->pszSound);
 325             }
 326         }
 327     }
 328     if (hmmio == 0) goto errCleanUp;
 329
 330     if (mmioDescend(hmmio, &ckMainRIFF, NULL, 0))
 331         goto errCleanUp;
 332
 333     TRACE("ParentChunk ckid=%.4s fccType=%.4s cksize=%08X\n",
 334           (LPSTR)&ckMainRIFF.ckid, (LPSTR)&ckMainRIFF.fccType, ckMainRIFF.cksize);
 335
 336     if ((ckMainRIFF.ckid != FOURCC_RIFF) ||
 337         (ckMainRIFF.fccType != mmioFOURCC('W', 'A', 'V', 'E')))
 338         goto errCleanUp;
 339
 340     mmckInfo.ckid = mmioFOURCC('f', 'm', 't', ' ');
 341     if (mmioDescend(hmmio, &mmckInfo, &ckMainRIFF, MMIO_FINDCHUNK))
 342         goto errCleanUp;
 343
 344     TRACE("Chunk Found ckid=%.4s fccType=%08x cksize=%08X\n",
 345           (LPSTR)&mmckInfo.ckid, mmckInfo.fccType, mmckInfo.cksize);
 346
 347     lpWaveFormat = HeapAlloc(GetProcessHeap(), 0, mmckInfo.cksize);
 348     if (mmioRead(hmmio, (HPSTR)lpWaveFormat, mmckInfo.cksize) < sizeof(WAVEFORMAT))
 349         goto errCleanUp;
 350
 351     TRACE("wFormatTag=%04X !\n",        lpWaveFormat->wFormatTag);
 352     TRACE("nChannels=%d\n",             lpWaveFormat->nChannels);
 353     TRACE("nSamplesPerSec=%d\n",        lpWaveFormat->nSamplesPerSec);
 354     TRACE("nAvgBytesPerSec=%d\n",       lpWaveFormat->nAvgBytesPerSec);
 355     TRACE("nBlockAlign=%d\n",           lpWaveFormat->nBlockAlign);
 356     TRACE("wBitsPerSample=%u !\n",      lpWaveFormat->wBitsPerSample);
 357
 358     /* move to end of 'fmt ' chunk */
 359     mmioAscend(hmmio, &mmckInfo, 0);
 360
 361     mmckInfo.ckid = mmioFOURCC('d', 'a', 't', 'a');
 362     if (mmioDescend(hmmio, &mmckInfo, &ckMainRIFF, MMIO_FINDCHUNK))
 363         goto errCleanUp;
 364
 365     TRACE("Chunk Found ckid=%.4s fccType=%08x cksize=%08X\n",
 366           (LPSTR)&mmckInfo.ckid, mmckInfo.fccType, mmckInfo.cksize);
 367
 368     s.hEvent = CreateEventW(NULL, FALSE, FALSE, NULL);
 369
 370     if (waveOutOpen(&wps->hWave, WAVE_MAPPER, lpWaveFormat, (DWORD)PlaySound_Callback,
 371                     (DWORD)&s, CALLBACK_FUNCTION) != MMSYSERR_NOERROR)
 372         goto errCleanUp;
 373
 374     /* make it so that 3 buffers per second are needed */
 375     bufsize = (((lpWaveFormat->nAvgBytesPerSec / 3) - 1) / lpWaveFormat->nBlockAlign + 1) *
 376         lpWaveFormat->nBlockAlign;
 377     waveHdr = HeapAlloc(GetProcessHeap(), 0, 2 * sizeof(WAVEHDR) + 2 * bufsize);
 378     waveHdr[0].lpData = (char*)waveHdr + 2 * sizeof(WAVEHDR);
 379     waveHdr[1].lpData = (char*)waveHdr + 2 * sizeof(WAVEHDR) + bufsize;
 380     waveHdr[0].dwUser = waveHdr[1].dwUser = 0L;
 381     waveHdr[0].dwLoops = waveHdr[1].dwLoops = 0L;
 382     waveHdr[0].dwFlags = waveHdr[1].dwFlags = 0L;
 383     waveHdr[0].dwBufferLength = waveHdr[1].dwBufferLength = bufsize;
 384     if (waveOutPrepareHeader(wps->hWave, &waveHdr[0], sizeof(WAVEHDR)) ||
 385         waveOutPrepareHeader(wps->hWave, &waveHdr[1], sizeof(WAVEHDR))) {
 386         goto errCleanUp;
 387     }
 388
 389     s.dwEventCount = 1L; /* for first buffer */
 390     index = 0;
 391
 392     do {
 393         left = mmckInfo.cksize;
 394
 395         mmioSeek(hmmio, mmckInfo.dwDataOffset, SEEK_SET);
 396         while (left)
 397         {
 398             if (WaitForSingleObject(psStopEvent, 0) == WAIT_OBJECT_0)
 399             {
 400                 wps->bLoop = FALSE;
 401                 break;
 402             }
 403             count = mmioRead(hmmio, waveHdr[index].lpData, min(bufsize, left));
 404             if (count < 1) break;
 405             left -= count;
 406             waveHdr[index].dwBufferLength = count;
 407             waveHdr[index].dwFlags &= ~WHDR_DONE;
 408             if (waveOutWrite(wps->hWave, &waveHdr[index], sizeof(WAVEHDR)) == MMSYSERR_NOERROR) {
 409                 index ^= 1;
 410                 PlaySound_WaitDone(&s);
 411             }
 412             else FIXME("Couldn't play header\n");
 413         }
 414         bRet = TRUE;
 415     } while (wps->bLoop);
 416
 417     PlaySound_WaitDone(&s); /* for last buffer */
 418     waveOutReset(wps->hWave);
 419
 420     waveOutUnprepareHeader(wps->hWave, &waveHdr[0], sizeof(WAVEHDR));
 421     waveOutUnprepareHeader(wps->hWave, &waveHdr[1], sizeof(WAVEHDR));
 422
 423 errCleanUp:
 424     TRACE("Done playing=%s => %s!\n", debugstr_w(wps->pszSound), bRet ? "ok" : "ko");
 425     CloseHandle(s.hEvent);
 426     HeapFree(GetProcessHeap(), 0, waveHdr);
 427     HeapFree(GetProcessHeap(), 0, lpWaveFormat);
 428     if (wps->hWave)     while (waveOutClose(wps->hWave) == WAVERR_STILLPLAYING) Sleep(100);
 429     if (hmmio)          mmioClose(hmmio, 0);
 430
 431     PlaySound_Free(wps);
 432
 433     return bRet;
 434 }
 435
 436 static BOOL MULTIMEDIA_PlaySound(const void* pszSound, HMODULE hmod, DWORD fdwSound, BOOL bUnicode)
 437 {
 438     WINE_PLAYSOUND*     wps = NULL;
 439
 440     TRACE("pszSound='%p' hmod=%p fdwSound=%08X\n",
 441           pszSound, hmod, fdwSound);
 442
 443     /* FIXME? I see no difference between SND_NOWAIT and SND_NOSTOP !
 444      * there could be one if several sounds can be played at once...
 445      */
 446     if ((fdwSound & (SND_NOWAIT | SND_NOSTOP)) && PlaySoundList != NULL)
 447         return FALSE;
 448
 449     /* alloc internal structure, if we need to play something */
 450     if (pszSound && !(fdwSound & SND_PURGE))
 451     {
 452         if (!(wps = PlaySound_Alloc(pszSound, hmod, fdwSound, bUnicode)))
 453             return FALSE;
 454     }
 455
 456     EnterCriticalSection(&WINMM_cs);
 457     /* since several threads can enter PlaySound in parallel, we're not
 458      * sure, at this point, that another thread didn't start a new playsound
 459      */
 460     while (PlaySoundList != NULL)
 461     {
 462         ResetEvent(psLastEvent);
 463         /* FIXME: doc says we have to stop all instances of pszSound if it's non
 464          * NULL... as of today, we stop all playing instances */
 465         SetEvent(psStopEvent);
 466
 467         waveOutReset(PlaySoundList->hWave);
 468         LeaveCriticalSection(&WINMM_cs);
 469         WaitForSingleObject(psLastEvent, INFINITE);
 470         EnterCriticalSection(&WINMM_cs);
 471
 472         ResetEvent(psStopEvent);
 473     }
 474
 475     if (wps) wps->lpNext = PlaySoundList;
 476     PlaySoundList = wps;
 477     LeaveCriticalSection(&WINMM_cs);
 478
 479     if (!pszSound || (fdwSound & SND_PURGE)) return TRUE;
 480
 481     if (fdwSound & SND_ASYNC)
 482     {
 483         DWORD       id;
 484         HANDLE      handle;
 485         wps->bLoop = (fdwSound & SND_LOOP) ? TRUE : FALSE;
 486         if ((handle = CreateThread(NULL, 0, proc_PlaySound, wps, 0, &id)) != 0) {
 487             wps->hThread = handle;
 488             SetThreadPriority(handle, THREAD_PRIORITY_TIME_CRITICAL);
 489             return TRUE;
 490         }
 491     }
 492     else return proc_PlaySound(wps);
 493
 494     /* error cases */
 495     PlaySound_Free(wps);
 496     return FALSE;
 497 }
 498
 499 /**************************************************************************
 500  *                              PlaySoundA              [WINMM.@]
 501  */
 502 BOOL WINAPI PlaySoundA(LPCSTR pszSoundA, HMODULE hmod, DWORD fdwSound)
 503 {
 504     return MULTIMEDIA_PlaySound(pszSoundA, hmod, fdwSound, FALSE);
 505 }
 506
 507 /**************************************************************************
 508  *                              PlaySoundW              [WINMM.@]
 509  */
 510 BOOL WINAPI PlaySoundW(LPCWSTR pszSoundW, HMODULE hmod, DWORD fdwSound)
 511 {
 512     return MULTIMEDIA_PlaySound(pszSoundW, hmod, fdwSound, TRUE);
 513 }
 514
 515 /**************************************************************************
 516  *                              sndPlaySoundA           [WINMM.@]
 517  */
 518 BOOL WINAPI sndPlaySoundA(LPCSTR pszSoundA, UINT uFlags)
 519 {
 520     uFlags &= SND_ASYNC|SND_LOOP|SND_MEMORY|SND_NODEFAULT|SND_NOSTOP|SND_SYNC;
 521     return MULTIMEDIA_PlaySound(pszSoundA, 0, uFlags, FALSE);
 522 }
 523
 524 /**************************************************************************
 525  *                              sndPlaySoundW           [WINMM.@]
 526  */
 527 BOOL WINAPI sndPlaySoundW(LPCWSTR pszSound, UINT uFlags)
 528 {
 529     uFlags &= SND_ASYNC|SND_LOOP|SND_MEMORY|SND_NODEFAULT|SND_NOSTOP|SND_SYNC;
 530     return MULTIMEDIA_PlaySound(pszSound, 0, uFlags, TRUE);
 531 }
 532
 533 /**************************************************************************
 534  *                              mmsystemGetVersion      [WINMM.@]
 535  */
 536 UINT WINAPI mmsystemGetVersion(void)
 537 {
 538     TRACE("3.10 (Win95?)\n");
 539     return 0x030a;
 540 }