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 NONAMELESSUNION
  39
  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 "mmddk.h"
  47 #include "wine/debug.h"
  48 #include "dsound.h"
  49 #include "dsconf.h"
  50 #include "ks.h"
  51 #include "rpcproxy.h"
  52 #include "rpc.h"
  53 #include "rpcndr.h"
  54 #include "unknwn.h"
  55 #include "oleidl.h"
  56 #include "shobjidl.h"
  57 #include "strmif.h"
  58
  59 #include "initguid.h"
  60 #include "ksmedia.h"
  61 #include "propkey.h"
  62 #include "devpkey.h"
  63
  64 #include "dsound_private.h"
  65
  66 WINE_DEFAULT_DEBUG_CHANNEL(dsound);
  67
  68 struct list DSOUND_renderers = LIST_INIT(DSOUND_renderers);
  69 CRITICAL_SECTION DSOUND_renderers_lock;
  70 static CRITICAL_SECTION_DEBUG DSOUND_renderers_lock_debug =
  71 {
  72     0, 0, &DSOUND_renderers_lock,
  73     { &DSOUND_renderers_lock_debug.ProcessLocksList, &DSOUND_renderers_lock_debug.ProcessLocksList },
  74       0, 0, { (DWORD_PTR)(__FILE__ ": DSOUND_renderers_lock") }
  75 };
  76 CRITICAL_SECTION DSOUND_renderers_lock = { &DSOUND_renderers_lock_debug, -1, 0, 0, 0, 0 };
  77
  78 struct list DSOUND_capturers = LIST_INIT(DSOUND_capturers);
  79 CRITICAL_SECTION DSOUND_capturers_lock;
  80 static CRITICAL_SECTION_DEBUG DSOUND_capturers_lock_debug =
  81 {
  82     0, 0, &DSOUND_capturers_lock,
  83     { &DSOUND_capturers_lock_debug.ProcessLocksList, &DSOUND_capturers_lock_debug.ProcessLocksList },
  84       0, 0, { (DWORD_PTR)(__FILE__ ": DSOUND_capturers_lock") }
  85 };
  86 CRITICAL_SECTION DSOUND_capturers_lock = { &DSOUND_capturers_lock_debug, -1, 0, 0, 0, 0 };
  87
  88 GUID                    DSOUND_renderer_guids[MAXWAVEDRIVERS];
  89 GUID                    DSOUND_capture_guids[MAXWAVEDRIVERS];
  90
  91 const WCHAR wine_vxd_drv[] = L"winemm.vxd";
  92
  93 /* All default settings, you most likely don't want to touch these, see wiki on UsefulRegistryKeys */
  94 int ds_hel_buflen = 32768 * 2;
  95
  96 /*
  97  * Get a config key from either the app-specific or the default config
  98  */
  99
 100 static inline DWORD get_config_key( HKEY defkey, HKEY appkey, const char *name,
 101                                     char *buffer, DWORD size )
 102 {
 103     if (appkey && !RegQueryValueExA( appkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 104     if (defkey && !RegQueryValueExA( defkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 105     return ERROR_FILE_NOT_FOUND;
 106 }
 107
 108
 109 /*
 110  * Setup the dsound options.
 111  */
 112
 113 void setup_dsound_options(void)
 114 {
 115     char buffer[MAX_PATH+16];
 116     HKEY hkey, appkey = 0;
 117     DWORD len;
 118
 119     buffer[MAX_PATH]='\0';
 120
 121     /* @@ Wine registry key: HKCU\Software\Wine\DirectSound */
 122     if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\DirectSound", &hkey )) hkey = 0;
 123
 124     len = GetModuleFileNameA( 0, buffer, MAX_PATH );
 125     if (len && len < MAX_PATH)
 126     {
 127         HKEY tmpkey;
 128         /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectSound */
 129         if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey ))
 130         {
 131             char *p, *appname = buffer;
 132             if ((p = strrchr( appname, '/' ))) appname = p + 1;
 133             if ((p = strrchr( appname, '\\' ))) appname = p + 1;
 134             strcat( appname, "\\DirectSound" );
 135             TRACE("appname = [%s]\n", appname);
 136             if (RegOpenKeyA( tmpkey, appname, &appkey )) appkey = 0;
 137             RegCloseKey( tmpkey );
 138         }
 139     }
 140
 141     /* get options */
 142
 143     if (!get_config_key( hkey, appkey, "HelBuflen", buffer, MAX_PATH ))
 144         ds_hel_buflen = atoi(buffer);
 145
 146     if (appkey) RegCloseKey( appkey );
 147     if (hkey) RegCloseKey( hkey );
 148
 149     TRACE("ds_hel_buflen = %d\n", ds_hel_buflen);
 150 }
 151
 152 static const char * get_device_id(LPCGUID pGuid)
 153 {
 154     if (IsEqualGUID(&DSDEVID_DefaultPlayback, pGuid))
 155         return "DSDEVID_DefaultPlayback";
 156     else if (IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuid))
 157         return "DSDEVID_DefaultVoicePlayback";
 158     else if (IsEqualGUID(&DSDEVID_DefaultCapture, pGuid))
 159         return "DSDEVID_DefaultCapture";
 160     else if (IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuid))
 161         return "DSDEVID_DefaultVoiceCapture";
 162     return debugstr_guid(pGuid);
 163 }
 164
 165 static HRESULT get_mmdevenum(IMMDeviceEnumerator **devenum)
 166 {
 167     HRESULT hr, init_hr;
 168
 169     init_hr = CoInitialize(NULL);
 170
 171     hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL,
 172             CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)devenum);
 173     if(FAILED(hr)){
 174         if(SUCCEEDED(init_hr))
 175             CoUninitialize();
 176         *devenum = NULL;
 177         ERR("CoCreateInstance failed: %08lx\n", hr);
 178         return hr;
 179     }
 180
 181     return init_hr;
 182 }
 183
 184 static void release_mmdevenum(IMMDeviceEnumerator *devenum, HRESULT init_hr)
 185 {
 186     IMMDeviceEnumerator_Release(devenum);
 187     if(SUCCEEDED(init_hr))
 188         CoUninitialize();
 189 }
 190
 191 static HRESULT get_mmdevice_guid(IMMDevice *device, IPropertyStore *ps,
 192         GUID *guid)
 193 {
 194     PROPVARIANT pv;
 195     HRESULT hr;
 196
 197     if(!ps){
 198         hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
 199         if(FAILED(hr)){
 200             WARN("OpenPropertyStore failed: %08lx\n", hr);
 201             return hr;
 202         }
 203     }else
 204         IPropertyStore_AddRef(ps);
 205
 206     PropVariantInit(&pv);
 207
 208     hr = IPropertyStore_GetValue(ps, &PKEY_AudioEndpoint_GUID, &pv);
 209     if(FAILED(hr)){
 210         IPropertyStore_Release(ps);
 211         WARN("GetValue(GUID) failed: %08lx\n", hr);
 212         return hr;
 213     }
 214
 215     CLSIDFromString(pv.pwszVal, guid);
 216
 217     PropVariantClear(&pv);
 218     IPropertyStore_Release(ps);
 219
 220     return S_OK;
 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     IMMDeviceEnumerator *devenum;
 246     EDataFlow flow = (EDataFlow)-1;
 247     ERole role = (ERole)-1;
 248     HRESULT hr, init_hr;
 249
 250     TRACE("(%s,%p)\n", get_device_id(pGuidSrc),pGuidDest);
 251
 252     if(!pGuidSrc || !pGuidDest)
 253         return DSERR_INVALIDPARAM;
 254
 255     init_hr = get_mmdevenum(&devenum);
 256     if(!devenum)
 257         return init_hr;
 258
 259     if(IsEqualGUID(&DSDEVID_DefaultPlayback, pGuidSrc)){
 260         role = eMultimedia;
 261         flow = eRender;
 262     }else if(IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuidSrc)){
 263         role = eCommunications;
 264         flow = eRender;
 265     }else if(IsEqualGUID(&DSDEVID_DefaultCapture, pGuidSrc)){
 266         role = eMultimedia;
 267         flow = eCapture;
 268     }else if(IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuidSrc)){
 269         role = eCommunications;
 270         flow = eCapture;
 271     }
 272
 273     if(role != (ERole)-1 && flow != (EDataFlow)-1){
 274         IMMDevice *device;
 275
 276         hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum,
 277                 flow, role, &device);
 278         if(FAILED(hr)){
 279             WARN("GetDefaultAudioEndpoint failed: %08lx\n", hr);
 280             release_mmdevenum(devenum, init_hr);
 281             return DSERR_NODRIVER;
 282         }
 283
 284         hr = get_mmdevice_guid(device, NULL, pGuidDest);
 285         IMMDevice_Release(device);
 286
 287         release_mmdevenum(devenum, init_hr);
 288
 289         return (hr == S_OK) ? DS_OK : hr;
 290     }
 291
 292     release_mmdevenum(devenum, init_hr);
 293
 294     *pGuidDest = *pGuidSrc;
 295
 296     return DS_OK;
 297 }
 298
 299 struct morecontext
 300 {
 301     LPDSENUMCALLBACKA callA;
 302     LPVOID data;
 303 };
 304
 305 static BOOL CALLBACK a_to_w_callback(LPGUID guid, LPCWSTR descW, LPCWSTR modW, LPVOID data)
 306 {
 307     struct morecontext *context = data;
 308     char descA[MAXPNAMELEN], modA[MAXPNAMELEN];
 309
 310     WideCharToMultiByte(CP_ACP, 0, descW, -1, descA, sizeof(descA), NULL, NULL);
 311     WideCharToMultiByte(CP_ACP, 0, modW, -1, modA, sizeof(modA), NULL, NULL);
 312
 313     return context->callA(guid, descA, modA, context->data);
 314 }
 315
 316 /***************************************************************************
 317  * DirectSoundEnumerateA [DSOUND.2]
 318  *
 319  * Enumerate all DirectSound drivers installed in the system
 320  *
 321  * PARAMS
 322  *    lpDSEnumCallback  [I] Address of callback function.
 323  *    lpContext         [I] Address of user defined context passed to callback function.
 324  *
 325  * RETURNS
 326  *    Success: DS_OK
 327  *    Failure: DSERR_INVALIDPARAM
 328  */
 329 HRESULT WINAPI DirectSoundEnumerateA(
 330     LPDSENUMCALLBACKA lpDSEnumCallback,
 331     LPVOID lpContext)
 332 {
 333     struct morecontext context;
 334
 335     if (lpDSEnumCallback == NULL) {
 336         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 337         return DSERR_INVALIDPARAM;
 338     }
 339
 340     context.callA = lpDSEnumCallback;
 341     context.data = lpContext;
 342
 343     return DirectSoundEnumerateW(a_to_w_callback, &context);
 344 }
 345
 346 HRESULT get_mmdevice(EDataFlow flow, const GUID *tgt, IMMDevice **device)
 347 {
 348     IMMDeviceEnumerator *devenum;
 349     IMMDeviceCollection *coll;
 350     UINT count, i;
 351     HRESULT hr, init_hr;
 352
 353     init_hr = get_mmdevenum(&devenum);
 354     if(!devenum)
 355         return init_hr;
 356
 357     hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flow,
 358             DEVICE_STATE_ACTIVE, &coll);
 359     if(FAILED(hr)){
 360         WARN("EnumAudioEndpoints failed: %08lx\n", hr);
 361         release_mmdevenum(devenum, init_hr);
 362         return hr;
 363     }
 364
 365     hr = IMMDeviceCollection_GetCount(coll, &count);
 366     if(FAILED(hr)){
 367         IMMDeviceCollection_Release(coll);
 368         release_mmdevenum(devenum, init_hr);
 369         WARN("GetCount failed: %08lx\n", hr);
 370         return hr;
 371     }
 372
 373     for(i = 0; i < count; ++i){
 374         GUID guid;
 375
 376         hr = IMMDeviceCollection_Item(coll, i, device);
 377         if(FAILED(hr))
 378             continue;
 379
 380         hr = get_mmdevice_guid(*device, NULL, &guid);
 381         if(FAILED(hr)){
 382             IMMDevice_Release(*device);
 383             continue;
 384         }
 385
 386         if(IsEqualGUID(&guid, tgt)){
 387             IMMDeviceCollection_Release(coll);
 388             release_mmdevenum(devenum, init_hr);
 389             return DS_OK;
 390         }
 391
 392         IMMDevice_Release(*device);
 393     }
 394
 395     WARN("No device with GUID %s found!\n", wine_dbgstr_guid(tgt));
 396
 397     IMMDeviceCollection_Release(coll);
 398     release_mmdevenum(devenum, init_hr);
 399
 400     return DSERR_INVALIDPARAM;
 401 }
 402
 403 static BOOL send_device(IMMDevice *device, GUID *guid,
 404         LPDSENUMCALLBACKW cb, void *user)
 405 {
 406     IPropertyStore *ps;
 407     PROPVARIANT pv;
 408     BOOL keep_going;
 409     HRESULT hr;
 410
 411     PropVariantInit(&pv);
 412
 413     hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
 414     if(FAILED(hr)){
 415         WARN("OpenPropertyStore failed: %08lx\n", hr);
 416         return TRUE;
 417     }
 418
 419     hr = get_mmdevice_guid(device, ps, guid);
 420     if(FAILED(hr)){
 421         IPropertyStore_Release(ps);
 422         return TRUE;
 423     }
 424
 425     hr = IPropertyStore_GetValue(ps,
 426             (const PROPERTYKEY *)&DEVPKEY_Device_FriendlyName, &pv);
 427     if(FAILED(hr)){
 428         IPropertyStore_Release(ps);
 429         WARN("GetValue(FriendlyName) failed: %08lx\n", hr);
 430         return TRUE;
 431     }
 432
 433     TRACE("Calling back with %s (%s)\n", wine_dbgstr_guid(guid),
 434             wine_dbgstr_w(pv.pwszVal));
 435
 436     keep_going = cb(guid, pv.pwszVal, wine_vxd_drv, user);
 437
 438     PropVariantClear(&pv);
 439     IPropertyStore_Release(ps);
 440
 441     return keep_going;
 442 }
 443
 444 /* S_FALSE means the callback returned FALSE at some point
 445  * S_OK means the callback always returned TRUE */
 446 HRESULT enumerate_mmdevices(EDataFlow flow, GUID *guids,
 447         LPDSENUMCALLBACKW cb, void *user)
 448 {
 449     IMMDeviceEnumerator *devenum;
 450     IMMDeviceCollection *coll;
 451     IMMDevice *defdev = NULL;
 452     UINT count, i, n;
 453     BOOL keep_going;
 454     HRESULT hr, init_hr;
 455
 456     init_hr = get_mmdevenum(&devenum);
 457     if(!devenum)
 458         return init_hr;
 459
 460     hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flow,
 461             DEVICE_STATE_ACTIVE, &coll);
 462     if(FAILED(hr)){
 463         release_mmdevenum(devenum, init_hr);
 464         WARN("EnumAudioEndpoints failed: %08lx\n", hr);
 465         return DS_OK;
 466     }
 467
 468     hr = IMMDeviceCollection_GetCount(coll, &count);
 469     if(FAILED(hr)){
 470         IMMDeviceCollection_Release(coll);
 471         release_mmdevenum(devenum, init_hr);
 472         WARN("GetCount failed: %08lx\n", hr);
 473         return DS_OK;
 474     }
 475
 476     if(count == 0){
 477         IMMDeviceCollection_Release(coll);
 478         release_mmdevenum(devenum, init_hr);
 479         return DS_OK;
 480     }
 481
 482     TRACE("Calling back with NULL (Primary Sound Driver)\n");
 483     keep_going = cb(NULL, L"Primary Sound Driver", L"", user);
 484
 485     /* always send the default device first */
 486     if(keep_going){
 487         hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum, flow,
 488                 eMultimedia, &defdev);
 489         if(FAILED(hr)){
 490             defdev = NULL;
 491             n = 0;
 492         }else{
 493             keep_going = send_device(defdev, &guids[0], cb, user);
 494             n = 1;
 495         }
 496     }
 497
 498     for(i = 0; keep_going && i < count; ++i){
 499         IMMDevice *device;
 500
 501         hr = IMMDeviceCollection_Item(coll, i, &device);
 502         if(FAILED(hr)){
 503             WARN("Item failed: %08lx\n", hr);
 504             continue;
 505         }
 506
 507         if(device != defdev){
 508             keep_going = send_device(device, &guids[n], cb, user);
 509             ++n;
 510         }
 511
 512         IMMDevice_Release(device);
 513     }
 514
 515     if(defdev)
 516         IMMDevice_Release(defdev);
 517     IMMDeviceCollection_Release(coll);
 518
 519     release_mmdevenum(devenum, init_hr);
 520
 521     return keep_going ? S_OK : S_FALSE;
 522 }
 523
 524 /***************************************************************************
 525  * DirectSoundEnumerateW [DSOUND.3]
 526  *
 527  * Enumerate all DirectSound drivers installed in the system
 528  *
 529  * PARAMS
 530  *    lpDSEnumCallback  [I] Address of callback function.
 531  *    lpContext         [I] Address of user defined context passed to callback function.
 532  *
 533  * RETURNS
 534  *    Success: DS_OK
 535  *    Failure: DSERR_INVALIDPARAM
 536  */
 537 HRESULT WINAPI DirectSoundEnumerateW(
 538         LPDSENUMCALLBACKW lpDSEnumCallback,
 539         LPVOID lpContext )
 540 {
 541     HRESULT hr;
 542
 543     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext);
 544
 545     if (lpDSEnumCallback == NULL) {
 546         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 547         return DSERR_INVALIDPARAM;
 548     }
 549
 550     setup_dsound_options();
 551
 552     hr = enumerate_mmdevices(eRender, DSOUND_renderer_guids,
 553             lpDSEnumCallback, lpContext);
 554     return SUCCEEDED(hr) ? DS_OK : hr;
 555 }
 556
 557 /***************************************************************************
 558  * DirectSoundCaptureEnumerateA [DSOUND.7]
 559  *
 560  * Enumerate all DirectSound drivers installed in the system.
 561  *
 562  * PARAMS
 563  *    lpDSEnumCallback  [I] Address of callback function.
 564  *    lpContext         [I] Address of user defined context passed to callback function.
 565  *
 566  * RETURNS
 567  *    Success: DS_OK
 568  *    Failure: DSERR_INVALIDPARAM
 569  */
 570 HRESULT WINAPI DirectSoundCaptureEnumerateA(
 571     LPDSENUMCALLBACKA lpDSEnumCallback,
 572     LPVOID lpContext)
 573 {
 574     struct morecontext context;
 575
 576     if (lpDSEnumCallback == NULL) {
 577         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 578         return DSERR_INVALIDPARAM;
 579     }
 580
 581     context.callA = lpDSEnumCallback;
 582     context.data = lpContext;
 583
 584     return DirectSoundCaptureEnumerateW(a_to_w_callback, &context);
 585 }
 586
 587 /***************************************************************************
 588  * DirectSoundCaptureEnumerateW [DSOUND.8]
 589  *
 590  * Enumerate all DirectSound drivers installed in the system.
 591  *
 592  * PARAMS
 593  *    lpDSEnumCallback  [I] Address of callback function.
 594  *    lpContext         [I] Address of user defined context passed to callback function.
 595  *
 596  * RETURNS
 597  *    Success: DS_OK
 598  *    Failure: DSERR_INVALIDPARAM
 599  */
 600 HRESULT WINAPI
 601 DirectSoundCaptureEnumerateW(
 602     LPDSENUMCALLBACKW lpDSEnumCallback,
 603     LPVOID lpContext)
 604 {
 605     HRESULT hr;
 606
 607     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext );
 608
 609     if (lpDSEnumCallback == NULL) {
 610         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 611         return DSERR_INVALIDPARAM;
 612     }
 613
 614     setup_dsound_options();
 615
 616     hr = enumerate_mmdevices(eCapture, DSOUND_capture_guids,
 617             lpDSEnumCallback, lpContext);
 618     return SUCCEEDED(hr) ? DS_OK : hr;
 619 }
 620
 621 /*******************************************************************************
 622  * DirectSound ClassFactory
 623  */
 624
 625 typedef  HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 626
 627 typedef struct {
 628     IClassFactory IClassFactory_iface;
 629     REFCLSID rclsid;
 630     FnCreateInstance pfnCreateInstance;
 631 } IClassFactoryImpl;
 632
 633 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 634 {
 635     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 636 }
 637
 638 static HRESULT WINAPI
 639 DSCF_QueryInterface(IClassFactory *iface, REFIID riid, LPVOID *ppobj)
 640 {
 641     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 642     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 643     if (ppobj == NULL)
 644         return E_POINTER;
 645     if (IsEqualIID(riid, &IID_IUnknown) ||
 646         IsEqualIID(riid, &IID_IClassFactory))
 647     {
 648         *ppobj = iface;
 649         IClassFactory_AddRef(iface);
 650         return S_OK;
 651     }
 652     *ppobj = NULL;
 653     return E_NOINTERFACE;
 654 }
 655
 656 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
 657 {
 658     return 2;
 659 }
 660
 661 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
 662 {
 663     /* static class, won't be freed */
 664     return 1;
 665 }
 666
 667 static HRESULT WINAPI DSCF_CreateInstance(
 668     LPCLASSFACTORY iface,
 669     LPUNKNOWN pOuter,
 670     REFIID riid,
 671     LPVOID *ppobj)
 672 {
 673     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 674     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 675
 676     if (pOuter)
 677         return CLASS_E_NOAGGREGATION;
 678
 679     if (ppobj == NULL) {
 680         WARN("invalid parameter\n");
 681         return DSERR_INVALIDPARAM;
 682     }
 683     *ppobj = NULL;
 684     return This->pfnCreateInstance(riid, ppobj);
 685 }
 686
 687 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 688 {
 689     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 690     FIXME("(%p, %d) stub!\n", This, dolock);
 691     return S_OK;
 692 }
 693
 694 static const IClassFactoryVtbl DSCF_Vtbl = {
 695     DSCF_QueryInterface,
 696     DSCF_AddRef,
 697     DSCF_Release,
 698     DSCF_CreateInstance,
 699     DSCF_LockServer
 700 };
 701
 702 static IClassFactoryImpl DSOUND_CF[] = {
 703     { { &DSCF_Vtbl }, &CLSID_DirectSound, DSOUND_Create },
 704     { { &DSCF_Vtbl }, &CLSID_DirectSound8, DSOUND_Create8 },
 705     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture, DSOUND_CaptureCreate },
 706     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture8, DSOUND_CaptureCreate8 },
 707     { { &DSCF_Vtbl }, &CLSID_DirectSoundFullDuplex, DSOUND_FullDuplexCreate },
 708     { { &DSCF_Vtbl }, &CLSID_DirectSoundPrivate, IKsPrivatePropertySetImpl_Create },
 709     { { NULL }, NULL, NULL }
 710 };
 711
 712 /*******************************************************************************
 713  * DllGetClassObject [DSOUND.@]
 714  * Retrieves class object from a DLL object
 715  *
 716  * NOTES
 717  *    Docs say returns STDAPI
 718  *
 719  * PARAMS
 720  *    rclsid [I] CLSID for the class object
 721  *    riid   [I] Reference to identifier of interface for class object
 722  *    ppv    [O] Address of variable to receive interface pointer for riid
 723  *
 724  * RETURNS
 725  *    Success: S_OK
 726  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 727  *             E_UNEXPECTED
 728  */
 729 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 730 {
 731     int i = 0;
 732     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 733
 734     if (ppv == NULL) {
 735         WARN("invalid parameter\n");
 736         return E_INVALIDARG;
 737     }
 738
 739     *ppv = NULL;
 740
 741     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 742         !IsEqualIID(riid, &IID_IUnknown)) {
 743         WARN("no interface for %s\n", debugstr_guid(riid));
 744         return E_NOINTERFACE;
 745     }
 746
 747     while (NULL != DSOUND_CF[i].rclsid) {
 748         if (IsEqualGUID(rclsid, DSOUND_CF[i].rclsid)) {
 749             DSCF_AddRef(&DSOUND_CF[i].IClassFactory_iface);
 750             *ppv = &DSOUND_CF[i];
 751             return S_OK;
 752         }
 753         i++;
 754     }
 755
 756     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 757          debugstr_guid(riid), ppv);
 758     return CLASS_E_CLASSNOTAVAILABLE;
 759 }
 760
 761
 762 #define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
 763         guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
 764         guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
 765         guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
 766         guid.Data4[6] = b7; guid.Data4[7] = b8;
 767
 768 /***********************************************************************
 769  *           DllMain (DSOUND.init)
 770  */
 771 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
 772 {
 773     TRACE("(%p %ld %p)\n", hInstDLL, fdwReason, lpvReserved);
 774
 775     switch (fdwReason) {
 776     case DLL_PROCESS_ATTACH:
 777         DisableThreadLibraryCalls(hInstDLL);
 778         /* Increase refcount on dsound by 1 */
 779         GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCWSTR)hInstDLL, &hInstDLL);
 780         break;
 781     case DLL_PROCESS_DETACH:
 782         if (lpvReserved) break;
 783         DeleteCriticalSection(&DSOUND_renderers_lock);
 784         DeleteCriticalSection(&DSOUND_capturers_lock);
 785         break;
 786     }
 787     return TRUE;
 788 }