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