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 "rpc.h"
  54 #include "rpcndr.h"
  55 #include "unknwn.h"
  56 #include "oleidl.h"
  57 #include "shobjidl.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 WCHAR wine_vxd_drv[] = { 'w','i','n','e','m','m','.','v','x','d', 0 };
  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 int ds_snd_queue_max = 10;
  96 int ds_default_sample_rate = 44100;
  97 int ds_default_bits_per_sample = 16;
  98 static HINSTANCE instance;
  99
 100 /*
 101  * Get a config key from either the app-specific or the default config
 102  */
 103
 104 static inline DWORD get_config_key( HKEY defkey, HKEY appkey, const char *name,
 105                                     char *buffer, DWORD size )
 106 {
 107     if (appkey && !RegQueryValueExA( appkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 108     if (defkey && !RegQueryValueExA( defkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 109     return ERROR_FILE_NOT_FOUND;
 110 }
 111
 112
 113 /*
 114  * Setup the dsound options.
 115  */
 116
 117 void setup_dsound_options(void)
 118 {
 119     char buffer[MAX_PATH+16];
 120     HKEY hkey, appkey = 0;
 121     DWORD len;
 122
 123     buffer[MAX_PATH]='\0';
 124
 125     /* @@ Wine registry key: HKCU\Software\Wine\DirectSound */
 126     if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\DirectSound", &hkey )) hkey = 0;
 127
 128     len = GetModuleFileNameA( 0, buffer, MAX_PATH );
 129     if (len && len < MAX_PATH)
 130     {
 131         HKEY tmpkey;
 132         /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectSound */
 133         if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey ))
 134         {
 135             char *p, *appname = buffer;
 136             if ((p = strrchr( appname, '/' ))) appname = p + 1;
 137             if ((p = strrchr( appname, '\\' ))) appname = p + 1;
 138             strcat( appname, "\\DirectSound" );
 139             TRACE("appname = [%s]\n", appname);
 140             if (RegOpenKeyA( tmpkey, appname, &appkey )) appkey = 0;
 141             RegCloseKey( tmpkey );
 142         }
 143     }
 144
 145     /* get options */
 146
 147     if (!get_config_key( hkey, appkey, "HelBuflen", buffer, MAX_PATH ))
 148         ds_hel_buflen = atoi(buffer);
 149
 150     if (!get_config_key( hkey, appkey, "SndQueueMax", buffer, MAX_PATH ))
 151         ds_snd_queue_max = atoi(buffer);
 152
 153
 154     if (!get_config_key( hkey, appkey, "DefaultSampleRate", buffer, MAX_PATH ))
 155         ds_default_sample_rate = atoi(buffer);
 156
 157     if (!get_config_key( hkey, appkey, "DefaultBitsPerSample", buffer, MAX_PATH ))
 158         ds_default_bits_per_sample = atoi(buffer);
 159
 160     if (appkey) RegCloseKey( appkey );
 161     if (hkey) RegCloseKey( hkey );
 162
 163     TRACE("ds_hel_buflen = %d\n", ds_hel_buflen);
 164     TRACE("ds_snd_queue_max = %d\n", ds_snd_queue_max);
 165     TRACE("ds_default_sample_rate = %d\n", ds_default_sample_rate);
 166     TRACE("ds_default_bits_per_sample = %d\n", ds_default_bits_per_sample);
 167 }
 168
 169 static const char * get_device_id(LPCGUID pGuid)
 170 {
 171     if (IsEqualGUID(&DSDEVID_DefaultPlayback, pGuid))
 172         return "DSDEVID_DefaultPlayback";
 173     else if (IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuid))
 174         return "DSDEVID_DefaultVoicePlayback";
 175     else if (IsEqualGUID(&DSDEVID_DefaultCapture, pGuid))
 176         return "DSDEVID_DefaultCapture";
 177     else if (IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuid))
 178         return "DSDEVID_DefaultVoiceCapture";
 179     return debugstr_guid(pGuid);
 180 }
 181
 182 static HRESULT get_mmdevenum(IMMDeviceEnumerator **devenum)
 183 {
 184     HRESULT hr, init_hr;
 185
 186     init_hr = CoInitialize(NULL);
 187
 188     hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL,
 189             CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)devenum);
 190     if(FAILED(hr)){
 191         CoUninitialize();
 192         *devenum = NULL;
 193         ERR("CoCreateInstance failed: %08x\n", hr);
 194         return hr;
 195     }
 196
 197     return init_hr;
 198 }
 199
 200 static void release_mmdevenum(IMMDeviceEnumerator *devenum, HRESULT init_hr)
 201 {
 202     IMMDeviceEnumerator_Release(devenum);
 203     if(SUCCEEDED(init_hr))
 204         CoUninitialize();
 205 }
 206
 207 static HRESULT get_mmdevice_guid(IMMDevice *device, IPropertyStore *ps,
 208         GUID *guid)
 209 {
 210     PROPVARIANT pv;
 211     HRESULT hr;
 212
 213     if(!ps){
 214         hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
 215         if(FAILED(hr)){
 216             WARN("OpenPropertyStore failed: %08x\n", hr);
 217             return hr;
 218         }
 219     }else
 220         IPropertyStore_AddRef(ps);
 221
 222     PropVariantInit(&pv);
 223
 224     hr = IPropertyStore_GetValue(ps, &PKEY_AudioEndpoint_GUID, &pv);
 225     if(FAILED(hr)){
 226         IPropertyStore_Release(ps);
 227         WARN("GetValue(GUID) failed: %08x\n", hr);
 228         return hr;
 229     }
 230
 231     CLSIDFromString(pv.u.pwszVal, guid);
 232
 233     PropVariantClear(&pv);
 234     IPropertyStore_Release(ps);
 235
 236     return S_OK;
 237 }
 238
 239 /***************************************************************************
 240  * GetDeviceID  [DSOUND.9]
 241  *
 242  * Retrieves unique identifier of default device specified
 243  *
 244  * PARAMS
 245  *    pGuidSrc  [I] Address of device GUID.
 246  *    pGuidDest [O] Address to receive unique device GUID.
 247  *
 248  * RETURNS
 249  *    Success: DS_OK
 250  *    Failure: DSERR_INVALIDPARAM
 251  *
 252  * NOTES
 253  *    pGuidSrc is a valid device GUID or DSDEVID_DefaultPlayback,
 254  *    DSDEVID_DefaultCapture, DSDEVID_DefaultVoicePlayback, or
 255  *    DSDEVID_DefaultVoiceCapture.
 256  *    Returns pGuidSrc if pGuidSrc is a valid device or the device
 257  *    GUID for the specified constants.
 258  */
 259 HRESULT WINAPI GetDeviceID(LPCGUID pGuidSrc, LPGUID pGuidDest)
 260 {
 261     IMMDeviceEnumerator *devenum;
 262     EDataFlow flow = (EDataFlow)-1;
 263     ERole role = (ERole)-1;
 264     HRESULT hr, init_hr;
 265
 266     TRACE("(%s,%p)\n", get_device_id(pGuidSrc),pGuidDest);
 267
 268     if(!pGuidSrc || !pGuidDest)
 269         return DSERR_INVALIDPARAM;
 270
 271     init_hr = get_mmdevenum(&devenum);
 272     if(!devenum)
 273         return init_hr;
 274
 275     if(IsEqualGUID(&DSDEVID_DefaultPlayback, pGuidSrc)){
 276         role = eMultimedia;
 277         flow = eRender;
 278     }else if(IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuidSrc)){
 279         role = eCommunications;
 280         flow = eRender;
 281     }else if(IsEqualGUID(&DSDEVID_DefaultCapture, pGuidSrc)){
 282         role = eMultimedia;
 283         flow = eCapture;
 284     }else if(IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuidSrc)){
 285         role = eCommunications;
 286         flow = eCapture;
 287     }
 288
 289     if(role != (ERole)-1 && flow != (EDataFlow)-1){
 290         IMMDevice *device;
 291
 292         hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum,
 293                 flow, role, &device);
 294         if(FAILED(hr)){
 295             WARN("GetDefaultAudioEndpoint failed: %08x\n", hr);
 296             release_mmdevenum(devenum, init_hr);
 297             return DSERR_NODRIVER;
 298         }
 299
 300         hr = get_mmdevice_guid(device, NULL, pGuidDest);
 301         IMMDevice_Release(device);
 302
 303         release_mmdevenum(devenum, init_hr);
 304
 305         return (hr == S_OK) ? DS_OK : hr;
 306     }
 307
 308     release_mmdevenum(devenum, init_hr);
 309
 310     *pGuidDest = *pGuidSrc;
 311
 312     return DS_OK;
 313 }
 314
 315 struct morecontext
 316 {
 317     LPDSENUMCALLBACKA callA;
 318     LPVOID data;
 319 };
 320
 321 static BOOL CALLBACK a_to_w_callback(LPGUID guid, LPCWSTR descW, LPCWSTR modW, LPVOID data)
 322 {
 323     struct morecontext *context = data;
 324     char descA[MAXPNAMELEN], modA[MAXPNAMELEN];
 325
 326     WideCharToMultiByte(CP_ACP, 0, descW, -1, descA, sizeof(descA), NULL, NULL);
 327     WideCharToMultiByte(CP_ACP, 0, modW, -1, modA, sizeof(modA), NULL, NULL);
 328
 329     return context->callA(guid, descA, modA, context->data);
 330 }
 331
 332 /***************************************************************************
 333  * DirectSoundEnumerateA [DSOUND.2]
 334  *
 335  * Enumerate all DirectSound drivers installed in the system
 336  *
 337  * PARAMS
 338  *    lpDSEnumCallback  [I] Address of callback function.
 339  *    lpContext         [I] Address of user defined context passed to callback function.
 340  *
 341  * RETURNS
 342  *    Success: DS_OK
 343  *    Failure: DSERR_INVALIDPARAM
 344  */
 345 HRESULT WINAPI DirectSoundEnumerateA(
 346     LPDSENUMCALLBACKA lpDSEnumCallback,
 347     LPVOID lpContext)
 348 {
 349     struct morecontext context;
 350
 351     if (lpDSEnumCallback == NULL) {
 352         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 353         return DSERR_INVALIDPARAM;
 354     }
 355
 356     context.callA = lpDSEnumCallback;
 357     context.data = lpContext;
 358
 359     return DirectSoundEnumerateW(a_to_w_callback, &context);
 360 }
 361
 362 HRESULT get_mmdevice(EDataFlow flow, const GUID *tgt, IMMDevice **device)
 363 {
 364     IMMDeviceEnumerator *devenum;
 365     IMMDeviceCollection *coll;
 366     UINT count, i;
 367     HRESULT hr, init_hr;
 368
 369     init_hr = get_mmdevenum(&devenum);
 370     if(!devenum)
 371         return init_hr;
 372
 373     hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flow,
 374             DEVICE_STATE_ACTIVE, &coll);
 375     if(FAILED(hr)){
 376         WARN("EnumAudioEndpoints failed: %08x\n", hr);
 377         release_mmdevenum(devenum, init_hr);
 378         return hr;
 379     }
 380
 381     hr = IMMDeviceCollection_GetCount(coll, &count);
 382     if(FAILED(hr)){
 383         IMMDeviceCollection_Release(coll);
 384         release_mmdevenum(devenum, init_hr);
 385         WARN("GetCount failed: %08x\n", hr);
 386         return hr;
 387     }
 388
 389     for(i = 0; i < count; ++i){
 390         GUID guid;
 391
 392         hr = IMMDeviceCollection_Item(coll, i, device);
 393         if(FAILED(hr))
 394             continue;
 395
 396         hr = get_mmdevice_guid(*device, NULL, &guid);
 397         if(FAILED(hr)){
 398             IMMDevice_Release(*device);
 399             continue;
 400         }
 401
 402         if(IsEqualGUID(&guid, tgt)){
 403             IMMDeviceCollection_Release(coll);
 404             release_mmdevenum(devenum, init_hr);
 405             return DS_OK;
 406         }
 407
 408         IMMDevice_Release(*device);
 409     }
 410
 411     WARN("No device with GUID %s found!\n", wine_dbgstr_guid(tgt));
 412
 413     IMMDeviceCollection_Release(coll);
 414     release_mmdevenum(devenum, init_hr);
 415
 416     return DSERR_INVALIDPARAM;
 417 }
 418
 419 static BOOL send_device(IMMDevice *device, GUID *guid,
 420         LPDSENUMCALLBACKW cb, void *user)
 421 {
 422     IPropertyStore *ps;
 423     PROPVARIANT pv;
 424     BOOL keep_going;
 425     HRESULT hr;
 426
 427     PropVariantInit(&pv);
 428
 429     hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
 430     if(FAILED(hr)){
 431         WARN("OpenPropertyStore failed: %08x\n", hr);
 432         return TRUE;
 433     }
 434
 435     hr = get_mmdevice_guid(device, ps, guid);
 436     if(FAILED(hr)){
 437         IPropertyStore_Release(ps);
 438         return TRUE;
 439     }
 440
 441     hr = IPropertyStore_GetValue(ps,
 442             (const PROPERTYKEY *)&DEVPKEY_Device_FriendlyName, &pv);
 443     if(FAILED(hr)){
 444         IPropertyStore_Release(ps);
 445         WARN("GetValue(FriendlyName) failed: %08x\n", hr);
 446         return TRUE;
 447     }
 448
 449     TRACE("Calling back with %s (%s)\n", wine_dbgstr_guid(guid),
 450             wine_dbgstr_w(pv.u.pwszVal));
 451
 452     keep_going = cb(guid, pv.u.pwszVal, wine_vxd_drv, user);
 453
 454     PropVariantClear(&pv);
 455     IPropertyStore_Release(ps);
 456
 457     return keep_going;
 458 }
 459
 460 /* S_FALSE means the callback returned FALSE at some point
 461  * S_OK means the callback always returned TRUE */
 462 HRESULT enumerate_mmdevices(EDataFlow flow, GUID *guids,
 463         LPDSENUMCALLBACKW cb, void *user)
 464 {
 465     IMMDeviceEnumerator *devenum;
 466     IMMDeviceCollection *coll;
 467     IMMDevice *defdev = NULL;
 468     UINT count, i, n;
 469     BOOL keep_going;
 470     HRESULT hr, init_hr;
 471
 472     static const WCHAR primary_desc[] = {'P','r','i','m','a','r','y',' ',
 473         'S','o','u','n','d',' ','D','r','i','v','e','r',0};
 474     static const WCHAR empty_drv[] = {0};
 475
 476     init_hr = get_mmdevenum(&devenum);
 477     if(!devenum)
 478         return init_hr;
 479
 480     hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flow,
 481             DEVICE_STATE_ACTIVE, &coll);
 482     if(FAILED(hr)){
 483         release_mmdevenum(devenum, init_hr);
 484         WARN("EnumAudioEndpoints failed: %08x\n", hr);
 485         return DS_OK;
 486     }
 487
 488     hr = IMMDeviceCollection_GetCount(coll, &count);
 489     if(FAILED(hr)){
 490         IMMDeviceCollection_Release(coll);
 491         release_mmdevenum(devenum, init_hr);
 492         WARN("GetCount failed: %08x\n", hr);
 493         return DS_OK;
 494     }
 495
 496     if(count == 0){
 497         release_mmdevenum(devenum, init_hr);
 498         return DS_OK;
 499     }
 500
 501     TRACE("Calling back with NULL (%s)\n", wine_dbgstr_w(primary_desc));
 502     keep_going = cb(NULL, primary_desc, empty_drv, user);
 503
 504     /* always send the default device first */
 505     if(keep_going){
 506         hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum, flow,
 507                 eMultimedia, &defdev);
 508         if(FAILED(hr)){
 509             defdev = NULL;
 510             n = 0;
 511         }else{
 512             keep_going = send_device(defdev, &guids[0], cb, user);
 513             n = 1;
 514         }
 515     }
 516
 517     for(i = 0; keep_going && i < count; ++i){
 518         IMMDevice *device;
 519
 520         hr = IMMDeviceCollection_Item(coll, i, &device);
 521         if(FAILED(hr)){
 522             WARN("Item failed: %08x\n", hr);
 523             continue;
 524         }
 525
 526         if(device != defdev){
 527             send_device(device, &guids[n], cb, user);
 528             ++n;
 529         }
 530
 531         IMMDevice_Release(device);
 532     }
 533
 534     if(defdev)
 535         IMMDevice_Release(defdev);
 536     IMMDeviceCollection_Release(coll);
 537
 538     release_mmdevenum(devenum, init_hr);
 539
 540     return (keep_going == TRUE) ? S_OK : S_FALSE;
 541 }
 542
 543 /***************************************************************************
 544  * DirectSoundEnumerateW [DSOUND.3]
 545  *
 546  * Enumerate all DirectSound drivers installed in the system
 547  *
 548  * PARAMS
 549  *    lpDSEnumCallback  [I] Address of callback function.
 550  *    lpContext         [I] Address of user defined context passed to callback function.
 551  *
 552  * RETURNS
 553  *    Success: DS_OK
 554  *    Failure: DSERR_INVALIDPARAM
 555  */
 556 HRESULT WINAPI DirectSoundEnumerateW(
 557         LPDSENUMCALLBACKW lpDSEnumCallback,
 558         LPVOID lpContext )
 559 {
 560     HRESULT hr;
 561
 562     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext);
 563
 564     if (lpDSEnumCallback == NULL) {
 565         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 566         return DSERR_INVALIDPARAM;
 567     }
 568
 569     setup_dsound_options();
 570
 571     hr = enumerate_mmdevices(eRender, DSOUND_renderer_guids,
 572             lpDSEnumCallback, lpContext);
 573     return SUCCEEDED(hr) ? DS_OK : hr;
 574 }
 575
 576 /***************************************************************************
 577  * DirectSoundCaptureEnumerateA [DSOUND.7]
 578  *
 579  * Enumerate all DirectSound drivers installed in the system.
 580  *
 581  * PARAMS
 582  *    lpDSEnumCallback  [I] Address of callback function.
 583  *    lpContext         [I] Address of user defined context passed to callback function.
 584  *
 585  * RETURNS
 586  *    Success: DS_OK
 587  *    Failure: DSERR_INVALIDPARAM
 588  */
 589 HRESULT WINAPI DirectSoundCaptureEnumerateA(
 590     LPDSENUMCALLBACKA lpDSEnumCallback,
 591     LPVOID lpContext)
 592 {
 593     struct morecontext context;
 594
 595     if (lpDSEnumCallback == NULL) {
 596         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 597         return DSERR_INVALIDPARAM;
 598     }
 599
 600     context.callA = lpDSEnumCallback;
 601     context.data = lpContext;
 602
 603     return DirectSoundCaptureEnumerateW(a_to_w_callback, &context);
 604 }
 605
 606 /***************************************************************************
 607  * DirectSoundCaptureEnumerateW [DSOUND.8]
 608  *
 609  * Enumerate all DirectSound drivers installed in the system.
 610  *
 611  * PARAMS
 612  *    lpDSEnumCallback  [I] Address of callback function.
 613  *    lpContext         [I] Address of user defined context passed to callback function.
 614  *
 615  * RETURNS
 616  *    Success: DS_OK
 617  *    Failure: DSERR_INVALIDPARAM
 618  */
 619 HRESULT WINAPI
 620 DirectSoundCaptureEnumerateW(
 621     LPDSENUMCALLBACKW lpDSEnumCallback,
 622     LPVOID lpContext)
 623 {
 624     HRESULT hr;
 625
 626     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext );
 627
 628     if (lpDSEnumCallback == NULL) {
 629         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 630         return DSERR_INVALIDPARAM;
 631     }
 632
 633     setup_dsound_options();
 634
 635     hr = enumerate_mmdevices(eCapture, DSOUND_capture_guids,
 636             lpDSEnumCallback, lpContext);
 637     return SUCCEEDED(hr) ? DS_OK : hr;
 638 }
 639
 640 /*******************************************************************************
 641  * DirectSound ClassFactory
 642  */
 643
 644 typedef  HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 645
 646 typedef struct {
 647     IClassFactory IClassFactory_iface;
 648     REFCLSID rclsid;
 649     FnCreateInstance pfnCreateInstance;
 650 } IClassFactoryImpl;
 651
 652 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 653 {
 654     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 655 }
 656
 657 static HRESULT WINAPI
 658 DSCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
 659 {
 660     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 661     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 662     if (ppobj == NULL)
 663         return E_POINTER;
 664     if (IsEqualIID(riid, &IID_IUnknown) ||
 665         IsEqualIID(riid, &IID_IClassFactory))
 666     {
 667         *ppobj = iface;
 668         IUnknown_AddRef(iface);
 669         return S_OK;
 670     }
 671     *ppobj = NULL;
 672     return E_NOINTERFACE;
 673 }
 674
 675 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
 676 {
 677     return 2;
 678 }
 679
 680 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
 681 {
 682     /* static class, won't be freed */
 683     return 1;
 684 }
 685
 686 static HRESULT WINAPI DSCF_CreateInstance(
 687     LPCLASSFACTORY iface,
 688     LPUNKNOWN pOuter,
 689     REFIID riid,
 690     LPVOID *ppobj)
 691 {
 692     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 693     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 694
 695     if (pOuter)
 696         return CLASS_E_NOAGGREGATION;
 697
 698     if (ppobj == NULL) {
 699         WARN("invalid parameter\n");
 700         return DSERR_INVALIDPARAM;
 701     }
 702     *ppobj = NULL;
 703     return This->pfnCreateInstance(riid, ppobj);
 704 }
 705
 706 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 707 {
 708     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 709     FIXME("(%p, %d) stub!\n", This, dolock);
 710     return S_OK;
 711 }
 712
 713 static const IClassFactoryVtbl DSCF_Vtbl = {
 714     DSCF_QueryInterface,
 715     DSCF_AddRef,
 716     DSCF_Release,
 717     DSCF_CreateInstance,
 718     DSCF_LockServer
 719 };
 720
 721 static IClassFactoryImpl DSOUND_CF[] = {
 722     { { &DSCF_Vtbl }, &CLSID_DirectSound, DSOUND_Create },
 723     { { &DSCF_Vtbl }, &CLSID_DirectSound8, DSOUND_Create8 },
 724     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture, (FnCreateInstance)DSOUND_CaptureCreate },
 725     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture8, (FnCreateInstance)DSOUND_CaptureCreate8 },
 726     { { &DSCF_Vtbl }, &CLSID_DirectSoundFullDuplex, (FnCreateInstance)DSOUND_FullDuplexCreate },
 727     { { &DSCF_Vtbl }, &CLSID_DirectSoundPrivate, (FnCreateInstance)IKsPrivatePropertySetImpl_Create },
 728     { { NULL }, NULL, NULL }
 729 };
 730
 731 /*******************************************************************************
 732  * DllGetClassObject [DSOUND.@]
 733  * Retrieves class object from a DLL object
 734  *
 735  * NOTES
 736  *    Docs say returns STDAPI
 737  *
 738  * PARAMS
 739  *    rclsid [I] CLSID for the class object
 740  *    riid   [I] Reference to identifier of interface for class object
 741  *    ppv    [O] Address of variable to receive interface pointer for riid
 742  *
 743  * RETURNS
 744  *    Success: S_OK
 745  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 746  *             E_UNEXPECTED
 747  */
 748 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 749 {
 750     int i = 0;
 751     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 752
 753     if (ppv == NULL) {
 754         WARN("invalid parameter\n");
 755         return E_INVALIDARG;
 756     }
 757
 758     *ppv = NULL;
 759
 760     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 761         !IsEqualIID(riid, &IID_IUnknown)) {
 762         WARN("no interface for %s\n", debugstr_guid(riid));
 763         return E_NOINTERFACE;
 764     }
 765
 766     while (NULL != DSOUND_CF[i].rclsid) {
 767         if (IsEqualGUID(rclsid, DSOUND_CF[i].rclsid)) {
 768             DSCF_AddRef(&DSOUND_CF[i].IClassFactory_iface);
 769             *ppv = &DSOUND_CF[i];
 770             return S_OK;
 771         }
 772         i++;
 773     }
 774
 775     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 776          debugstr_guid(riid), ppv);
 777     return CLASS_E_CLASSNOTAVAILABLE;
 778 }
 779
 780
 781 /*******************************************************************************
 782  * DllCanUnloadNow [DSOUND.4]
 783  * Determines whether the DLL is in use.
 784  *
 785  * RETURNS
 786  *    Can unload now: S_OK
 787  *    Cannot unload now (the DLL is still active): S_FALSE
 788  */
 789 HRESULT WINAPI DllCanUnloadNow(void)
 790 {
 791     return S_FALSE;
 792 }
 793
 794 #define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
 795         guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
 796         guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
 797         guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
 798         guid.Data4[6] = b7; guid.Data4[7] = b8;
 799
 800 /***********************************************************************
 801  *           DllMain (DSOUND.init)
 802  */
 803 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
 804 {
 805     TRACE("(%p %d %p)\n", hInstDLL, fdwReason, lpvReserved);
 806
 807     switch (fdwReason) {
 808     case DLL_PROCESS_ATTACH:
 809         TRACE("DLL_PROCESS_ATTACH\n");
 810         instance = hInstDLL;
 811         DisableThreadLibraryCalls(hInstDLL);
 812         /* Increase refcount on dsound by 1 */
 813         GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCWSTR)hInstDLL, &hInstDLL);
 814         break;
 815     case DLL_PROCESS_DETACH:
 816         TRACE("DLL_PROCESS_DETACH\n");
 817         DeleteCriticalSection(&DSOUND_renderers_lock);
 818         DeleteCriticalSection(&DSOUND_capturers_lock);
 819         break;
 820     default:
 821         TRACE("UNKNOWN REASON\n");
 822         break;
 823     }
 824     return TRUE;
 825 }
 826
 827 /***********************************************************************
 828  *              DllRegisterServer (DSOUND.@)
 829  */
 830 HRESULT WINAPI DllRegisterServer(void)
 831 {
 832     return __wine_register_resources( instance );
 833 }
 834
 835 /***********************************************************************
 836  *              DllUnregisterServer (DSOUND.@)
 837  */
 838 HRESULT WINAPI DllUnregisterServer(void)
 839 {
 840     return __wine_unregister_resources( instance );
 841 }