dlls/dsound/dsound_main.c

   1 /*                      DirectSound
   2  *
   3  * Copyright 1998 Marcus Meissner
   4  * Copyright 1998 Rob Riggs
   5  * Copyright 2000-2002 TransGaming Technologies, Inc.
   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  * Most thread locking is complete. There may be a few race
  22  * conditions still lurking.
  23  *
  24  * TODO:
  25  *      Implement SetCooperativeLevel properly (need to address focus issues)
  26  *      Implement DirectSound3DBuffers (stubs in place)
  27  *      Use hardware 3D support if available
  28  *      Add critical section locking inside Release and AddRef methods
  29  *      Handle static buffers - put those in hardware, non-static not in hardware
  30  *      Hardware DuplicateSoundBuffer
  31  *      Proper volume calculation for 3d buffers
  32  *      Remove DS_HEL_FRAGS and use mixer fragment length for it
  33  */
  34
  35 #include <stdarg.h>
  36
  37 #define COBJMACROS
  38 #define NONAMELESSSTRUCT
  39 #define NONAMELESSUNION
  40 #include "windef.h"
  41 #include "winbase.h"
  42 #include "winuser.h"
  43 #include "winnls.h"
  44 #include "winreg.h"
  45 #include "mmsystem.h"
  46 #include "winternl.h"
  47 #include "mmddk.h"
  48 #include "wine/debug.h"
  49 #include "dsound.h"
  50 #include "dsconf.h"
  51 #include "ks.h"
  52 #include "rpcproxy.h"
  53 #include "initguid.h"
  54 #include "ksmedia.h"
  55 #include "dsdriver.h"
  56
  57 #include "dsound_private.h"
  58
  59 WINE_DEFAULT_DEBUG_CHANNEL(dsound);
  60
  61 DirectSoundDevice*      DSOUND_renderer[MAXWAVEDRIVERS];
  62 GUID                    DSOUND_renderer_guids[MAXWAVEDRIVERS];
  63 GUID                    DSOUND_capture_guids[MAXWAVEDRIVERS];
  64
  65 HRESULT mmErr(UINT err)
  66 {
  67         switch(err) {
  68         case MMSYSERR_NOERROR:
  69                 return DS_OK;
  70         case MMSYSERR_ALLOCATED:
  71                 return DSERR_ALLOCATED;
  72         case MMSYSERR_ERROR:
  73         case MMSYSERR_INVALHANDLE:
  74         case WAVERR_STILLPLAYING:
  75                 return DSERR_GENERIC; /* FIXME */
  76         case MMSYSERR_NODRIVER:
  77                 return DSERR_NODRIVER;
  78         case MMSYSERR_NOMEM:
  79                 return DSERR_OUTOFMEMORY;
  80         case MMSYSERR_INVALPARAM:
  81         case WAVERR_BADFORMAT:
  82         case WAVERR_UNPREPARED:
  83                 return DSERR_INVALIDPARAM;
  84         case MMSYSERR_NOTSUPPORTED:
  85                 return DSERR_UNSUPPORTED;
  86         default:
  87                 FIXME("Unknown MMSYS error %d\n",err);
  88                 return DSERR_GENERIC;
  89         }
  90 }
  91
  92 /* All default settings, you most likely don't want to touch these, see wiki on UsefulRegistryKeys */
  93 int ds_emuldriver = 0;
  94 int ds_hel_buflen = 32768 * 2;
  95 int ds_snd_queue_max = 10;
  96 int ds_snd_queue_min = 6;
  97 int ds_snd_shadow_maxsize = 2;
  98 int ds_hw_accel = DS_HW_ACCEL_FULL;
  99 int ds_default_sample_rate = 44100;
 100 int ds_default_bits_per_sample = 16;
 101 static int ds_default_playback;
 102 static int ds_default_capture;
 103 static HINSTANCE instance;
 104
 105 /*
 106  * Get a config key from either the app-specific or the default config
 107  */
 108
 109 static inline DWORD get_config_key( HKEY defkey, HKEY appkey, const char *name,
 110                                     char *buffer, DWORD size )
 111 {
 112     if (appkey && !RegQueryValueExA( appkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 113     if (defkey && !RegQueryValueExA( defkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 114     return ERROR_FILE_NOT_FOUND;
 115 }
 116
 117
 118 /*
 119  * Setup the dsound options.
 120  */
 121
 122 void setup_dsound_options(void)
 123 {
 124     char buffer[MAX_PATH+16];
 125     HKEY hkey, appkey = 0;
 126     DWORD len;
 127
 128     buffer[MAX_PATH]='\0';
 129
 130     /* @@ Wine registry key: HKCU\Software\Wine\DirectSound */
 131     if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\DirectSound", &hkey )) hkey = 0;
 132
 133     len = GetModuleFileNameA( 0, buffer, MAX_PATH );
 134     if (len && len < MAX_PATH)
 135     {
 136         HKEY tmpkey;
 137         /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectSound */
 138         if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey ))
 139         {
 140             char *p, *appname = buffer;
 141             if ((p = strrchr( appname, '/' ))) appname = p + 1;
 142             if ((p = strrchr( appname, '\\' ))) appname = p + 1;
 143             strcat( appname, "\\DirectSound" );
 144             TRACE("appname = [%s]\n", appname);
 145             if (RegOpenKeyA( tmpkey, appname, &appkey )) appkey = 0;
 146             RegCloseKey( tmpkey );
 147         }
 148     }
 149
 150     /* get options */
 151
 152     if (!get_config_key( hkey, appkey, "EmulDriver", buffer, MAX_PATH ))
 153         ds_emuldriver = strcmp(buffer, "N");
 154
 155     if (!get_config_key( hkey, appkey, "HelBuflen", buffer, MAX_PATH ))
 156         ds_hel_buflen = atoi(buffer);
 157
 158     if (!get_config_key( hkey, appkey, "SndQueueMax", buffer, MAX_PATH ))
 159         ds_snd_queue_max = atoi(buffer);
 160
 161     if (!get_config_key( hkey, appkey, "SndQueueMin", buffer, MAX_PATH ))
 162         ds_snd_queue_min = atoi(buffer);
 163
 164     if (!get_config_key( hkey, appkey, "HardwareAcceleration", buffer, MAX_PATH )) {
 165         if (strcmp(buffer, "Full") == 0)
 166             ds_hw_accel = DS_HW_ACCEL_FULL;
 167         else if (strcmp(buffer, "Standard") == 0)
 168             ds_hw_accel = DS_HW_ACCEL_STANDARD;
 169         else if (strcmp(buffer, "Basic") == 0)
 170             ds_hw_accel = DS_HW_ACCEL_BASIC;
 171         else if (strcmp(buffer, "Emulation") == 0)
 172             ds_hw_accel = DS_HW_ACCEL_EMULATION;
 173     }
 174
 175     if (!get_config_key( hkey, appkey, "DefaultPlayback", buffer, MAX_PATH ))
 176         ds_default_playback = atoi(buffer);
 177
 178     if (!get_config_key( hkey, appkey, "MaxShadowSize", buffer, MAX_PATH ))
 179         ds_snd_shadow_maxsize = atoi(buffer);
 180
 181     if (!get_config_key( hkey, appkey, "DefaultCapture", buffer, MAX_PATH ))
 182         ds_default_capture = atoi(buffer);
 183
 184     if (!get_config_key( hkey, appkey, "DefaultSampleRate", buffer, MAX_PATH ))
 185         ds_default_sample_rate = atoi(buffer);
 186
 187     if (!get_config_key( hkey, appkey, "DefaultBitsPerSample", buffer, MAX_PATH ))
 188         ds_default_bits_per_sample = atoi(buffer);
 189
 190     if (appkey) RegCloseKey( appkey );
 191     if (hkey) RegCloseKey( hkey );
 192
 193     TRACE("ds_emuldriver = %d\n", ds_emuldriver);
 194     TRACE("ds_hel_buflen = %d\n", ds_hel_buflen);
 195     TRACE("ds_snd_queue_max = %d\n", ds_snd_queue_max);
 196     TRACE("ds_snd_queue_min = %d\n", ds_snd_queue_min);
 197     TRACE("ds_hw_accel = %s\n",
 198         ds_hw_accel==DS_HW_ACCEL_FULL ? "Full" :
 199         ds_hw_accel==DS_HW_ACCEL_STANDARD ? "Standard" :
 200         ds_hw_accel==DS_HW_ACCEL_BASIC ? "Basic" :
 201         ds_hw_accel==DS_HW_ACCEL_EMULATION ? "Emulation" :
 202         "Unknown");
 203     TRACE("ds_default_playback = %d\n", ds_default_playback);
 204     TRACE("ds_default_capture = %d\n", ds_default_playback);
 205     TRACE("ds_default_sample_rate = %d\n", ds_default_sample_rate);
 206     TRACE("ds_default_bits_per_sample = %d\n", ds_default_bits_per_sample);
 207     TRACE("ds_snd_shadow_maxsize = %d\n", ds_snd_shadow_maxsize);
 208 }
 209
 210 static const char * get_device_id(LPCGUID pGuid)
 211 {
 212     if (IsEqualGUID(&DSDEVID_DefaultPlayback, pGuid))
 213         return "DSDEVID_DefaultPlayback";
 214     else if (IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuid))
 215         return "DSDEVID_DefaultVoicePlayback";
 216     else if (IsEqualGUID(&DSDEVID_DefaultCapture, pGuid))
 217         return "DSDEVID_DefaultCapture";
 218     else if (IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuid))
 219         return "DSDEVID_DefaultVoiceCapture";
 220     return debugstr_guid(pGuid);
 221 }
 222
 223 /***************************************************************************
 224  * GetDeviceID  [DSOUND.9]
 225  *
 226  * Retrieves unique identifier of default device specified
 227  *
 228  * PARAMS
 229  *    pGuidSrc  [I] Address of device GUID.
 230  *    pGuidDest [O] Address to receive unique device GUID.
 231  *
 232  * RETURNS
 233  *    Success: DS_OK
 234  *    Failure: DSERR_INVALIDPARAM
 235  *
 236  * NOTES
 237  *    pGuidSrc is a valid device GUID or DSDEVID_DefaultPlayback,
 238  *    DSDEVID_DefaultCapture, DSDEVID_DefaultVoicePlayback, or
 239  *    DSDEVID_DefaultVoiceCapture.
 240  *    Returns pGuidSrc if pGuidSrc is a valid device or the device
 241  *    GUID for the specified constants.
 242  */
 243 HRESULT WINAPI GetDeviceID(LPCGUID pGuidSrc, LPGUID pGuidDest)
 244 {
 245     TRACE("(%s,%p)\n", get_device_id(pGuidSrc),pGuidDest);
 246
 247     if ( pGuidSrc == NULL) {
 248         WARN("invalid parameter: pGuidSrc == NULL\n");
 249         return DSERR_INVALIDPARAM;
 250     }
 251
 252     if ( pGuidDest == NULL ) {
 253         WARN("invalid parameter: pGuidDest == NULL\n");
 254         return DSERR_INVALIDPARAM;
 255     }
 256
 257     if ( IsEqualGUID( &DSDEVID_DefaultPlayback, pGuidSrc ) ||
 258          IsEqualGUID( &DSDEVID_DefaultVoicePlayback, pGuidSrc ) ) {
 259         *pGuidDest = DSOUND_renderer_guids[ds_default_playback];
 260         TRACE("returns %s\n", get_device_id(pGuidDest));
 261         return DS_OK;
 262     }
 263
 264     if ( IsEqualGUID( &DSDEVID_DefaultCapture, pGuidSrc ) ||
 265          IsEqualGUID( &DSDEVID_DefaultVoiceCapture, pGuidSrc ) ) {
 266         *pGuidDest = DSOUND_capture_guids[ds_default_capture];
 267         TRACE("returns %s\n", get_device_id(pGuidDest));
 268         return DS_OK;
 269     }
 270
 271     *pGuidDest = *pGuidSrc;
 272     TRACE("returns %s\n", get_device_id(pGuidDest));
 273
 274     return DS_OK;
 275 }
 276
 277 struct morecontext
 278 {
 279     LPDSENUMCALLBACKA callA;
 280     LPVOID data;
 281 };
 282
 283 static BOOL CALLBACK a_to_w_callback(LPGUID guid, LPCWSTR descW, LPCWSTR modW, LPVOID data)
 284 {
 285     struct morecontext *context = data;
 286     char descA[MAXPNAMELEN], modA[MAXPNAMELEN];
 287
 288     WideCharToMultiByte(CP_ACP, 0, descW, -1, descA, sizeof(descA), NULL, NULL);
 289     WideCharToMultiByte(CP_ACP, 0, modW, -1, modA, sizeof(modA), NULL, NULL);
 290
 291     return context->callA(guid, descA, modA, context->data);
 292 }
 293
 294 /***************************************************************************
 295  * DirectSoundEnumerateA [DSOUND.2]
 296  *
 297  * Enumerate all DirectSound drivers installed in the system
 298  *
 299  * PARAMS
 300  *    lpDSEnumCallback  [I] Address of callback function.
 301  *    lpContext         [I] Address of user defined context passed to callback function.
 302  *
 303  * RETURNS
 304  *    Success: DS_OK
 305  *    Failure: DSERR_INVALIDPARAM
 306  */
 307 HRESULT WINAPI DirectSoundEnumerateA(
 308     LPDSENUMCALLBACKA lpDSEnumCallback,
 309     LPVOID lpContext)
 310 {
 311     struct morecontext context;
 312
 313     if (lpDSEnumCallback == NULL) {
 314         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 315         return DSERR_INVALIDPARAM;
 316     }
 317
 318     context.callA = lpDSEnumCallback;
 319     context.data = lpContext;
 320
 321     return DirectSoundEnumerateW(a_to_w_callback, &context);
 322 }
 323
 324 /***************************************************************************
 325  * DirectSoundEnumerateW [DSOUND.3]
 326  *
 327  * Enumerate all DirectSound drivers installed in the system
 328  *
 329  * PARAMS
 330  *    lpDSEnumCallback  [I] Address of callback function.
 331  *    lpContext         [I] Address of user defined context passed to callback function.
 332  *
 333  * RETURNS
 334  *    Success: DS_OK
 335  *    Failure: DSERR_INVALIDPARAM
 336  */
 337 HRESULT WINAPI DirectSoundEnumerateW(
 338         LPDSENUMCALLBACKW lpDSEnumCallback,
 339         LPVOID lpContext )
 340 {
 341     unsigned devs, wod;
 342     DSDRIVERDESC desc;
 343     GUID guid;
 344     int err;
 345     WCHAR wDesc[MAXPNAMELEN];
 346     WCHAR wName[MAXPNAMELEN];
 347
 348     TRACE("lpDSEnumCallback = %p, lpContext = %p\n",
 349         lpDSEnumCallback, lpContext);
 350
 351     if (lpDSEnumCallback == NULL) {
 352         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 353         return DSERR_INVALIDPARAM;
 354     }
 355
 356     setup_dsound_options();
 357
 358     devs = waveOutGetNumDevs();
 359     if (devs > 0) {
 360         if (GetDeviceID(&DSDEVID_DefaultPlayback, &guid) == DS_OK) {
 361             static const WCHAR empty[] = { 0 };
 362             for (wod = 0; wod < devs; ++wod) {
 363                 if (IsEqualGUID( &guid, &DSOUND_renderer_guids[wod] ) ) {
 364                     err = mmErr(waveOutMessage(UlongToHandle(wod),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,ds_hw_accel));
 365                     if (err == DS_OK) {
 366                         TRACE("calling lpDSEnumCallback(NULL,\"%s\",\"%s\",%p)\n",
 367                               "Primary Sound Driver",desc.szDrvname,lpContext);
 368                         MultiByteToWideChar( CP_ACP, 0, "Primary Sound Driver", -1,
 369                                              wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 370                         if (lpDSEnumCallback(NULL, wDesc, empty, lpContext) == FALSE)
 371                             return DS_OK;
 372                     }
 373                 }
 374             }
 375         }
 376     }
 377
 378     for (wod = 0; wod < devs; ++wod) {
 379         err = mmErr(waveOutMessage(UlongToHandle(wod),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,ds_hw_accel));
 380         if (err == DS_OK) {
 381             TRACE("calling lpDSEnumCallback(%s,\"%s\",\"%s\",%p)\n",
 382                   debugstr_guid(&DSOUND_renderer_guids[wod]),desc.szDesc,desc.szDrvname,lpContext);
 383             MultiByteToWideChar( CP_ACP, 0, desc.szDesc, -1,
 384                                  wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 385             wDesc[(sizeof(wDesc)/sizeof(WCHAR)) - 1] = '\0';
 386
 387             MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
 388                                  wName, sizeof(wName)/sizeof(WCHAR) );
 389             wName[(sizeof(wName)/sizeof(WCHAR)) - 1] = '\0';
 390
 391             if (lpDSEnumCallback(&DSOUND_renderer_guids[wod], wDesc, wName, lpContext) == FALSE)
 392                 return DS_OK;
 393         }
 394     }
 395     return DS_OK;
 396 }
 397
 398 /***************************************************************************
 399  * DirectSoundCaptureEnumerateA [DSOUND.7]
 400  *
 401  * Enumerate all DirectSound drivers installed in the system.
 402  *
 403  * PARAMS
 404  *    lpDSEnumCallback  [I] Address of callback function.
 405  *    lpContext         [I] Address of user defined context passed to callback function.
 406  *
 407  * RETURNS
 408  *    Success: DS_OK
 409  *    Failure: DSERR_INVALIDPARAM
 410  */
 411 HRESULT WINAPI DirectSoundCaptureEnumerateA(
 412     LPDSENUMCALLBACKA lpDSEnumCallback,
 413     LPVOID lpContext)
 414 {
 415     struct morecontext context;
 416
 417     if (lpDSEnumCallback == NULL) {
 418         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 419         return DSERR_INVALIDPARAM;
 420     }
 421
 422     context.callA = lpDSEnumCallback;
 423     context.data = lpContext;
 424
 425     return DirectSoundCaptureEnumerateW(a_to_w_callback, &context);
 426 }
 427
 428 /***************************************************************************
 429  * DirectSoundCaptureEnumerateW [DSOUND.8]
 430  *
 431  * Enumerate all DirectSound drivers installed in the system.
 432  *
 433  * PARAMS
 434  *    lpDSEnumCallback  [I] Address of callback function.
 435  *    lpContext         [I] Address of user defined context passed to callback function.
 436  *
 437  * RETURNS
 438  *    Success: DS_OK
 439  *    Failure: DSERR_INVALIDPARAM
 440  */
 441 HRESULT WINAPI
 442 DirectSoundCaptureEnumerateW(
 443     LPDSENUMCALLBACKW lpDSEnumCallback,
 444     LPVOID lpContext)
 445 {
 446     unsigned devs, wid;
 447     DSDRIVERDESC desc;
 448     GUID guid;
 449     int err;
 450     WCHAR wDesc[MAXPNAMELEN];
 451     WCHAR wName[MAXPNAMELEN];
 452
 453     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext );
 454
 455     if (lpDSEnumCallback == NULL) {
 456         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 457         return DSERR_INVALIDPARAM;
 458     }
 459
 460     setup_dsound_options();
 461
 462     devs = waveInGetNumDevs();
 463     if (devs > 0) {
 464         if (GetDeviceID(&DSDEVID_DefaultCapture, &guid) == DS_OK) {
 465             for (wid = 0; wid < devs; ++wid) {
 466                 if (IsEqualGUID( &guid, &DSOUND_capture_guids[wid] ) ) {
 467                     err = mmErr(waveInMessage(UlongToHandle(wid),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,ds_hw_accel));
 468                     if (err == DS_OK) {
 469                         TRACE("calling lpDSEnumCallback(NULL,\"%s\",\"%s\",%p)\n",
 470                               "Primary Sound Capture Driver",desc.szDrvname,lpContext);
 471                         MultiByteToWideChar( CP_ACP, 0, "Primary Sound Capture Driver", -1,
 472                                              wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 473                         MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
 474                                              wName, sizeof(wName)/sizeof(WCHAR) );
 475                         wName[(sizeof(wName)/sizeof(WCHAR)) - 1] = '\0';
 476
 477                         if (lpDSEnumCallback(NULL, wDesc, wName, lpContext) == FALSE)
 478                             return DS_OK;
 479                     }
 480                 }
 481             }
 482         }
 483     }
 484
 485     for (wid = 0; wid < devs; ++wid) {
 486         err = mmErr(waveInMessage(UlongToHandle(wid),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,ds_hw_accel));
 487         if (err == DS_OK) {
 488             TRACE("calling lpDSEnumCallback(%s,\"%s\",\"%s\",%p)\n",
 489                   debugstr_guid(&DSOUND_capture_guids[wid]),desc.szDesc,desc.szDrvname,lpContext);
 490             MultiByteToWideChar( CP_ACP, 0, desc.szDesc, -1,
 491                                  wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 492             wDesc[(sizeof(wDesc)/sizeof(WCHAR)) - 1] = '\0';
 493
 494             MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
 495                                  wName, sizeof(wName)/sizeof(WCHAR) );
 496             wName[(sizeof(wName)/sizeof(WCHAR)) - 1] = '\0';
 497
 498             if (lpDSEnumCallback(&DSOUND_capture_guids[wid], wDesc, wName, lpContext) == FALSE)
 499                 return DS_OK;
 500         }
 501     }
 502
 503     return DS_OK;
 504 }
 505
 506 /*******************************************************************************
 507  * DirectSound ClassFactory
 508  */
 509
 510 typedef  HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 511
 512 typedef struct {
 513     IClassFactory IClassFactory_iface;
 514     REFCLSID rclsid;
 515     FnCreateInstance pfnCreateInstance;
 516 } IClassFactoryImpl;
 517
 518 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 519 {
 520     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 521 }
 522
 523 static HRESULT WINAPI
 524 DSCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
 525 {
 526     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 527     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 528     if (ppobj == NULL)
 529         return E_POINTER;
 530     if (IsEqualIID(riid, &IID_IUnknown) ||
 531         IsEqualIID(riid, &IID_IClassFactory))
 532     {
 533         *ppobj = iface;
 534         IUnknown_AddRef(iface);
 535         return S_OK;
 536     }
 537     *ppobj = NULL;
 538     return E_NOINTERFACE;
 539 }
 540
 541 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
 542 {
 543     return 2;
 544 }
 545
 546 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
 547 {
 548     /* static class, won't be freed */
 549     return 1;
 550 }
 551
 552 static HRESULT WINAPI DSCF_CreateInstance(
 553     LPCLASSFACTORY iface,
 554     LPUNKNOWN pOuter,
 555     REFIID riid,
 556     LPVOID *ppobj)
 557 {
 558     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 559     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 560
 561     if (pOuter)
 562         return CLASS_E_NOAGGREGATION;
 563
 564     if (ppobj == NULL) {
 565         WARN("invalid parameter\n");
 566         return DSERR_INVALIDPARAM;
 567     }
 568     *ppobj = NULL;
 569     return This->pfnCreateInstance(riid, ppobj);
 570 }
 571
 572 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 573 {
 574     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 575     FIXME("(%p, %d) stub!\n", This, dolock);
 576     return S_OK;
 577 }
 578
 579 static const IClassFactoryVtbl DSCF_Vtbl = {
 580     DSCF_QueryInterface,
 581     DSCF_AddRef,
 582     DSCF_Release,
 583     DSCF_CreateInstance,
 584     DSCF_LockServer
 585 };
 586
 587 static IClassFactoryImpl DSOUND_CF[] = {
 588     { { &DSCF_Vtbl }, &CLSID_DirectSound, (FnCreateInstance)DSOUND_Create },
 589     { { &DSCF_Vtbl }, &CLSID_DirectSound8, (FnCreateInstance)DSOUND_Create8 },
 590     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture, (FnCreateInstance)DSOUND_CaptureCreate },
 591     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture8, (FnCreateInstance)DSOUND_CaptureCreate8 },
 592     { { &DSCF_Vtbl }, &CLSID_DirectSoundFullDuplex, (FnCreateInstance)DSOUND_FullDuplexCreate },
 593     { { &DSCF_Vtbl }, &CLSID_DirectSoundPrivate, (FnCreateInstance)IKsPrivatePropertySetImpl_Create },
 594     { { NULL }, NULL, NULL }
 595 };
 596
 597 /*******************************************************************************
 598  * DllGetClassObject [DSOUND.@]
 599  * Retrieves class object from a DLL object
 600  *
 601  * NOTES
 602  *    Docs say returns STDAPI
 603  *
 604  * PARAMS
 605  *    rclsid [I] CLSID for the class object
 606  *    riid   [I] Reference to identifier of interface for class object
 607  *    ppv    [O] Address of variable to receive interface pointer for riid
 608  *
 609  * RETURNS
 610  *    Success: S_OK
 611  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 612  *             E_UNEXPECTED
 613  */
 614 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 615 {
 616     int i = 0;
 617     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 618
 619     if (ppv == NULL) {
 620         WARN("invalid parameter\n");
 621         return E_INVALIDARG;
 622     }
 623
 624     *ppv = NULL;
 625
 626     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 627         !IsEqualIID(riid, &IID_IUnknown)) {
 628         WARN("no interface for %s\n", debugstr_guid(riid));
 629         return E_NOINTERFACE;
 630     }
 631
 632     while (NULL != DSOUND_CF[i].rclsid) {
 633         if (IsEqualGUID(rclsid, DSOUND_CF[i].rclsid)) {
 634             DSCF_AddRef(&DSOUND_CF[i].IClassFactory_iface);
 635             *ppv = &DSOUND_CF[i];
 636             return S_OK;
 637         }
 638         i++;
 639     }
 640
 641     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 642          debugstr_guid(riid), ppv);
 643     return CLASS_E_CLASSNOTAVAILABLE;
 644 }
 645
 646
 647 /*******************************************************************************
 648  * DllCanUnloadNow [DSOUND.4]
 649  * Determines whether the DLL is in use.
 650  *
 651  * RETURNS
 652  *    Can unload now: S_OK
 653  *    Cannot unload now (the DLL is still active): S_FALSE
 654  */
 655 HRESULT WINAPI DllCanUnloadNow(void)
 656 {
 657     return S_FALSE;
 658 }
 659
 660 #define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
 661         guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
 662         guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
 663         guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
 664         guid.Data4[6] = b7; guid.Data4[7] = b8;
 665
 666 /***********************************************************************
 667  *           DllMain (DSOUND.init)
 668  */
 669 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
 670 {
 671     int i;
 672     TRACE("(%p %d %p)\n", hInstDLL, fdwReason, lpvReserved);
 673
 674     switch (fdwReason) {
 675     case DLL_PROCESS_ATTACH:
 676         TRACE("DLL_PROCESS_ATTACH\n");
 677         for (i = 0; i < MAXWAVEDRIVERS; i++) {
 678             DSOUND_renderer[i] = NULL;
 679             DSOUND_capture[i] = NULL;
 680             INIT_GUID(DSOUND_renderer_guids[i], 0xbd6dd71a, 0x3deb, 0x11d1, 0xb1, 0x71, 0x00, 0xc0, 0x4f, 0xc2, 0x00, 0x00 + i);
 681             INIT_GUID(DSOUND_capture_guids[i],  0xbd6dd71b, 0x3deb, 0x11d1, 0xb1, 0x71, 0x00, 0xc0, 0x4f, 0xc2, 0x00, 0x00 + i);
 682         }
 683         instance = hInstDLL;
 684         DisableThreadLibraryCalls(hInstDLL);
 685         /* Increase refcount on dsound by 1 */
 686         GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCWSTR)hInstDLL, &hInstDLL);
 687         break;
 688     case DLL_PROCESS_DETACH:
 689         TRACE("DLL_PROCESS_DETACH\n");
 690         break;
 691     default:
 692         TRACE("UNKNOWN REASON\n");
 693         break;
 694     }
 695     return TRUE;
 696 }
 697
 698 /***********************************************************************
 699  *              DllRegisterServer (DSOUND.@)
 700  */
 701 HRESULT WINAPI DllRegisterServer(void)
 702 {
 703     return __wine_register_resources( instance );
 704 }
 705
 706 /***********************************************************************
 707  *              DllUnregisterServer (DSOUND.@)
 708  */
 709 HRESULT WINAPI DllUnregisterServer(void)
 710 {
 711     return __wine_unregister_resources( instance );
 712 }