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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_guid = { 0xbd6dd71a,0x3deb,0x11d1, {0xb1,0x71,0x00,0xc0,0x4f,0xc2,0x00,0x00} };
  62 GUID DSOUND_capture_guid = { 0xbd6dd71b,0x3deb,0x11d1, {0xb1,0x71,0x00,0xc0,0x4f,0xc2,0x00,0x00} };
  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_guid;
 258         pGuidDest->Data4[7] = ds_default_playback;
 259         TRACE("returns %s\n", get_device_id(pGuidDest));
 260         return DS_OK;
 261     }
 262
 263     if ( IsEqualGUID( &DSDEVID_DefaultCapture, pGuidSrc ) ||
 264          IsEqualGUID( &DSDEVID_DefaultVoiceCapture, pGuidSrc ) ) {
 265         *pGuidDest = DSOUND_capture_guid;
 266         pGuidDest->Data4[7] = 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     devs = waveOutGetNumDevs();
 357     if (devs > 0) {
 358         if (GetDeviceID(&DSDEVID_DefaultPlayback, &guid) == DS_OK) {
 359             static const WCHAR empty[] = { 0 };
 360             wod = guid.Data4[7];
 361             if (wod < devs) {
 362                 err = mmErr(waveOutMessage(UlongToHandle(wod),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,0));
 363                 if (err == DS_OK) {
 364                     TRACE("calling lpDSEnumCallback(NULL,\"%s\",\"%s\",%p)\n",
 365                           "Primary Sound Driver",desc.szDrvname,lpContext);
 366                     MultiByteToWideChar( CP_ACP, 0, "Primary Sound Driver", -1,
 367                                          wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 368                     if (lpDSEnumCallback(NULL, wDesc, empty, lpContext) == FALSE)
 369                         return DS_OK;
 370                 }
 371             }
 372         }
 373     }
 374
 375     for (wod = 0; wod < devs; ++wod) {
 376         err = mmErr(waveOutMessage(UlongToHandle(wod),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,0));
 377         if (err == DS_OK) {
 378             guid.Data4[7] = wod;
 379             TRACE("calling lpDSEnumCallback(%s,\"%s\",\"%s\",%p)\n",
 380                   debugstr_guid(&guid),desc.szDesc,desc.szDrvname,lpContext);
 381             MultiByteToWideChar( CP_ACP, 0, desc.szDesc, -1,
 382                                  wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 383             MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
 384                                  wName, sizeof(wName)/sizeof(WCHAR) );
 385             if (lpDSEnumCallback(&guid, wDesc, wName, lpContext) == FALSE)
 386                 return DS_OK;
 387         }
 388     }
 389     return DS_OK;
 390 }
 391
 392 /***************************************************************************
 393  * DirectSoundCaptureEnumerateA [DSOUND.7]
 394  *
 395  * Enumerate all DirectSound drivers installed in the system.
 396  *
 397  * PARAMS
 398  *    lpDSEnumCallback  [I] Address of callback function.
 399  *    lpContext         [I] Address of user defined context passed to callback function.
 400  *
 401  * RETURNS
 402  *    Success: DS_OK
 403  *    Failure: DSERR_INVALIDPARAM
 404  */
 405 HRESULT WINAPI DirectSoundCaptureEnumerateA(
 406     LPDSENUMCALLBACKA lpDSEnumCallback,
 407     LPVOID lpContext)
 408 {
 409     struct morecontext context;
 410
 411     if (lpDSEnumCallback == NULL) {
 412         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 413         return DSERR_INVALIDPARAM;
 414     }
 415
 416     context.callA = lpDSEnumCallback;
 417     context.data = lpContext;
 418
 419     return DirectSoundCaptureEnumerateW(a_to_w_callback, &context);
 420 }
 421
 422 /***************************************************************************
 423  * DirectSoundCaptureEnumerateW [DSOUND.8]
 424  *
 425  * Enumerate all DirectSound drivers installed in the system.
 426  *
 427  * PARAMS
 428  *    lpDSEnumCallback  [I] Address of callback function.
 429  *    lpContext         [I] Address of user defined context passed to callback function.
 430  *
 431  * RETURNS
 432  *    Success: DS_OK
 433  *    Failure: DSERR_INVALIDPARAM
 434  */
 435 HRESULT WINAPI
 436 DirectSoundCaptureEnumerateW(
 437     LPDSENUMCALLBACKW lpDSEnumCallback,
 438     LPVOID lpContext)
 439 {
 440     unsigned devs, wid;
 441     DSDRIVERDESC desc;
 442     GUID guid;
 443     int err;
 444     WCHAR wDesc[MAXPNAMELEN];
 445     WCHAR wName[MAXPNAMELEN];
 446
 447     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext );
 448
 449     if (lpDSEnumCallback == NULL) {
 450         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 451         return DSERR_INVALIDPARAM;
 452     }
 453
 454     devs = waveInGetNumDevs();
 455     if (devs > 0) {
 456         if (GetDeviceID(&DSDEVID_DefaultCapture, &guid) == DS_OK) {
 457             wid = guid.Data4[7];
 458             if (wid < devs) {
 459                 err = mmErr(waveInMessage(UlongToHandle(wid),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,0));
 460                 if (err == DS_OK) {
 461                     TRACE("calling lpDSEnumCallback(NULL,\"%s\",\"%s\",%p)\n",
 462                           "Primary Sound Capture Driver",desc.szDrvname,lpContext);
 463                     MultiByteToWideChar( CP_ACP, 0, "Primary Sound Capture Driver", -1,
 464                                          wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 465                     MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
 466                                          wName, sizeof(wName)/sizeof(WCHAR) );
 467                     if (lpDSEnumCallback(NULL, wDesc, wName, lpContext) == FALSE)
 468                         return DS_OK;
 469                 }
 470             }
 471         }
 472     }
 473
 474     for (wid = 0; wid < devs; ++wid) {
 475         err = mmErr(waveInMessage(UlongToHandle(wid),DRV_QUERYDSOUNDDESC,(DWORD_PTR)&desc,0));
 476         if (err == DS_OK) {
 477             guid.Data4[7] = wid;
 478             TRACE("calling lpDSEnumCallback(%s,\"%s\",\"%s\",%p)\n",
 479                   debugstr_guid(&guid),desc.szDesc,desc.szDrvname,lpContext);
 480             MultiByteToWideChar( CP_ACP, 0, desc.szDesc, -1,
 481                                  wDesc, sizeof(wDesc)/sizeof(WCHAR) );
 482             MultiByteToWideChar( CP_ACP, 0, desc.szDrvname, -1,
 483                                  wName, sizeof(wName)/sizeof(WCHAR) );
 484             if (lpDSEnumCallback(&guid, wDesc, wName, lpContext) == FALSE)
 485                 return DS_OK;
 486         }
 487     }
 488
 489     return DS_OK;
 490 }
 491
 492 /*******************************************************************************
 493  * DirectSound ClassFactory
 494  */
 495
 496 typedef  HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 497
 498 typedef struct {
 499     const IClassFactoryVtbl *lpVtbl;
 500     LONG ref;
 501     REFCLSID rclsid;
 502     FnCreateInstance pfnCreateInstance;
 503 } IClassFactoryImpl;
 504
 505 static HRESULT WINAPI
 506 DSCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
 507 {
 508     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 509     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 510     if (ppobj == NULL)
 511         return E_POINTER;
 512     if (IsEqualIID(riid, &IID_IUnknown) ||
 513         IsEqualIID(riid, &IID_IClassFactory))
 514     {
 515         *ppobj = iface;
 516         IUnknown_AddRef(iface);
 517         return S_OK;
 518     }
 519     *ppobj = NULL;
 520     return E_NOINTERFACE;
 521 }
 522
 523 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
 524 {
 525     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 526     ULONG ref = InterlockedIncrement(&(This->ref));
 527     TRACE("(%p) ref was %d\n", This, ref - 1);
 528     return ref;
 529 }
 530
 531 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
 532 {
 533     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 534     ULONG ref = InterlockedDecrement(&(This->ref));
 535     TRACE("(%p) ref was %d\n", This, ref + 1);
 536     /* static class, won't be freed */
 537     return ref;
 538 }
 539
 540 static HRESULT WINAPI DSCF_CreateInstance(
 541     LPCLASSFACTORY iface,
 542     LPUNKNOWN pOuter,
 543     REFIID riid,
 544     LPVOID *ppobj)
 545 {
 546     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 547     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 548
 549     if (pOuter)
 550         return CLASS_E_NOAGGREGATION;
 551
 552     if (ppobj == NULL) {
 553         WARN("invalid parameter\n");
 554         return DSERR_INVALIDPARAM;
 555     }
 556     *ppobj = NULL;
 557     return This->pfnCreateInstance(riid, ppobj);
 558 }
 559
 560 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 561 {
 562     IClassFactoryImpl *This = (IClassFactoryImpl *)iface;
 563     FIXME("(%p, %d) stub!\n", This, dolock);
 564     return S_OK;
 565 }
 566
 567 static const IClassFactoryVtbl DSCF_Vtbl = {
 568     DSCF_QueryInterface,
 569     DSCF_AddRef,
 570     DSCF_Release,
 571     DSCF_CreateInstance,
 572     DSCF_LockServer
 573 };
 574
 575 static IClassFactoryImpl DSOUND_CF[] = {
 576     { &DSCF_Vtbl, 1, &CLSID_DirectSound, (FnCreateInstance)DSOUND_Create },
 577     { &DSCF_Vtbl, 1, &CLSID_DirectSound8, (FnCreateInstance)DSOUND_Create8 },
 578     { &DSCF_Vtbl, 1, &CLSID_DirectSoundCapture, (FnCreateInstance)DSOUND_CaptureCreate },
 579     { &DSCF_Vtbl, 1, &CLSID_DirectSoundCapture8, (FnCreateInstance)DSOUND_CaptureCreate8 },
 580     { &DSCF_Vtbl, 1, &CLSID_DirectSoundFullDuplex, (FnCreateInstance)DSOUND_FullDuplexCreate },
 581     { &DSCF_Vtbl, 1, &CLSID_DirectSoundPrivate, (FnCreateInstance)IKsPrivatePropertySetImpl_Create },
 582     { NULL, 0, NULL, NULL }
 583 };
 584
 585 /*******************************************************************************
 586  * DllGetClassObject [DSOUND.@]
 587  * Retrieves class object from a DLL object
 588  *
 589  * NOTES
 590  *    Docs say returns STDAPI
 591  *
 592  * PARAMS
 593  *    rclsid [I] CLSID for the class object
 594  *    riid   [I] Reference to identifier of interface for class object
 595  *    ppv    [O] Address of variable to receive interface pointer for riid
 596  *
 597  * RETURNS
 598  *    Success: S_OK
 599  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 600  *             E_UNEXPECTED
 601  */
 602 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 603 {
 604     int i = 0;
 605     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 606
 607     if (ppv == NULL) {
 608         WARN("invalid parameter\n");
 609         return E_INVALIDARG;
 610     }
 611
 612     *ppv = NULL;
 613
 614     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 615         !IsEqualIID(riid, &IID_IUnknown)) {
 616         WARN("no interface for %s\n", debugstr_guid(riid));
 617         return E_NOINTERFACE;
 618     }
 619
 620     while (NULL != DSOUND_CF[i].rclsid) {
 621         if (IsEqualGUID(rclsid, DSOUND_CF[i].rclsid)) {
 622             DSCF_AddRef((IClassFactory*) &DSOUND_CF[i]);
 623             *ppv = &DSOUND_CF[i];
 624             return S_OK;
 625         }
 626         i++;
 627     }
 628
 629     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 630          debugstr_guid(riid), ppv);
 631     return CLASS_E_CLASSNOTAVAILABLE;
 632 }
 633
 634
 635 /*******************************************************************************
 636  * DllCanUnloadNow [DSOUND.4]
 637  * Determines whether the DLL is in use.
 638  *
 639  * RETURNS
 640  *    Success: S_OK
 641  *    Failure: S_FALSE
 642  */
 643 HRESULT WINAPI DllCanUnloadNow(void)
 644 {
 645     FIXME("(void): stub\n");
 646     return S_FALSE;
 647 }
 648
 649 #define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
 650         guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
 651         guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
 652         guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
 653         guid.Data4[6] = b7; guid.Data4[7] = b8;
 654
 655 /***********************************************************************
 656  *           DllMain (DSOUND.init)
 657  */
 658 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
 659 {
 660     int i;
 661     TRACE("(%p %d %p)\n", hInstDLL, fdwReason, lpvReserved);
 662
 663     switch (fdwReason) {
 664     case DLL_PROCESS_ATTACH:
 665         TRACE("DLL_PROCESS_ATTACH\n");
 666         for (i = 0; i < MAXWAVEDRIVERS; i++) {
 667             DSOUND_renderer[i] = NULL;
 668             DSOUND_capture[i] = NULL;
 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 }