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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 "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
  71 struct list DSOUND_capturers = LIST_INIT(DSOUND_capturers);
  72 CRITICAL_SECTION DSOUND_capturers_lock;
  73
  74 GUID                    DSOUND_renderer_guids[MAXWAVEDRIVERS];
  75 GUID                    DSOUND_capture_guids[MAXWAVEDRIVERS];
  76
  77 static IMMDeviceEnumerator *g_devenum;
  78 static CRITICAL_SECTION g_devenum_lock;
  79 static HANDLE g_devenum_thread;
  80
  81 WCHAR wine_vxd_drv[] = { 'w','i','n','e','m','m','.','v','x','d', 0 };
  82
  83 HRESULT mmErr(UINT err)
  84 {
  85         switch(err) {
  86         case MMSYSERR_NOERROR:
  87                 return DS_OK;
  88         case MMSYSERR_ALLOCATED:
  89                 return DSERR_ALLOCATED;
  90         case MMSYSERR_ERROR:
  91         case MMSYSERR_INVALHANDLE:
  92         case WAVERR_STILLPLAYING:
  93                 return DSERR_GENERIC; /* FIXME */
  94         case MMSYSERR_NODRIVER:
  95                 return DSERR_NODRIVER;
  96         case MMSYSERR_NOMEM:
  97                 return DSERR_OUTOFMEMORY;
  98         case MMSYSERR_INVALPARAM:
  99         case WAVERR_BADFORMAT:
 100         case WAVERR_UNPREPARED:
 101                 return DSERR_INVALIDPARAM;
 102         case MMSYSERR_NOTSUPPORTED:
 103                 return DSERR_UNSUPPORTED;
 104         default:
 105                 FIXME("Unknown MMSYS error %d\n",err);
 106                 return DSERR_GENERIC;
 107         }
 108 }
 109
 110 /* All default settings, you most likely don't want to touch these, see wiki on UsefulRegistryKeys */
 111 int ds_emuldriver = 0;
 112 int ds_hel_buflen = 32768 * 2;
 113 int ds_snd_queue_max = 10;
 114 int ds_snd_shadow_maxsize = 2;
 115 int ds_default_sample_rate = 44100;
 116 int ds_default_bits_per_sample = 16;
 117 static int ds_default_playback;
 118 static int ds_default_capture;
 119 static HINSTANCE instance;
 120
 121 /*
 122  * Get a config key from either the app-specific or the default config
 123  */
 124
 125 static inline DWORD get_config_key( HKEY defkey, HKEY appkey, const char *name,
 126                                     char *buffer, DWORD size )
 127 {
 128     if (appkey && !RegQueryValueExA( appkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 129     if (defkey && !RegQueryValueExA( defkey, name, 0, NULL, (LPBYTE)buffer, &size )) return 0;
 130     return ERROR_FILE_NOT_FOUND;
 131 }
 132
 133
 134 /*
 135  * Setup the dsound options.
 136  */
 137
 138 void setup_dsound_options(void)
 139 {
 140     char buffer[MAX_PATH+16];
 141     HKEY hkey, appkey = 0;
 142     DWORD len;
 143
 144     buffer[MAX_PATH]='\0';
 145
 146     /* @@ Wine registry key: HKCU\Software\Wine\DirectSound */
 147     if (RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\DirectSound", &hkey )) hkey = 0;
 148
 149     len = GetModuleFileNameA( 0, buffer, MAX_PATH );
 150     if (len && len < MAX_PATH)
 151     {
 152         HKEY tmpkey;
 153         /* @@ Wine registry key: HKCU\Software\Wine\AppDefaults\app.exe\DirectSound */
 154         if (!RegOpenKeyA( HKEY_CURRENT_USER, "Software\\Wine\\AppDefaults", &tmpkey ))
 155         {
 156             char *p, *appname = buffer;
 157             if ((p = strrchr( appname, '/' ))) appname = p + 1;
 158             if ((p = strrchr( appname, '\\' ))) appname = p + 1;
 159             strcat( appname, "\\DirectSound" );
 160             TRACE("appname = [%s]\n", appname);
 161             if (RegOpenKeyA( tmpkey, appname, &appkey )) appkey = 0;
 162             RegCloseKey( tmpkey );
 163         }
 164     }
 165
 166     /* get options */
 167
 168     if (!get_config_key( hkey, appkey, "EmulDriver", buffer, MAX_PATH ))
 169         ds_emuldriver = strcmp(buffer, "N");
 170
 171     if (!get_config_key( hkey, appkey, "HelBuflen", buffer, MAX_PATH ))
 172         ds_hel_buflen = atoi(buffer);
 173
 174     if (!get_config_key( hkey, appkey, "SndQueueMax", buffer, MAX_PATH ))
 175         ds_snd_queue_max = atoi(buffer);
 176
 177     if (!get_config_key( hkey, appkey, "DefaultPlayback", buffer, MAX_PATH ))
 178         ds_default_playback = atoi(buffer);
 179
 180     if (!get_config_key( hkey, appkey, "MaxShadowSize", buffer, MAX_PATH ))
 181         ds_snd_shadow_maxsize = atoi(buffer);
 182
 183     if (!get_config_key( hkey, appkey, "DefaultCapture", buffer, MAX_PATH ))
 184         ds_default_capture = atoi(buffer);
 185
 186     if (!get_config_key( hkey, appkey, "DefaultSampleRate", buffer, MAX_PATH ))
 187         ds_default_sample_rate = atoi(buffer);
 188
 189     if (!get_config_key( hkey, appkey, "DefaultBitsPerSample", buffer, MAX_PATH ))
 190         ds_default_bits_per_sample = atoi(buffer);
 191
 192     if (appkey) RegCloseKey( appkey );
 193     if (hkey) RegCloseKey( hkey );
 194
 195     TRACE("ds_emuldriver = %d\n", ds_emuldriver);
 196     TRACE("ds_hel_buflen = %d\n", ds_hel_buflen);
 197     TRACE("ds_snd_queue_max = %d\n", ds_snd_queue_max);
 198     TRACE("ds_default_playback = %d\n", ds_default_playback);
 199     TRACE("ds_default_capture = %d\n", ds_default_capture);
 200     TRACE("ds_default_sample_rate = %d\n", ds_default_sample_rate);
 201     TRACE("ds_default_bits_per_sample = %d\n", ds_default_bits_per_sample);
 202     TRACE("ds_snd_shadow_maxsize = %d\n", ds_snd_shadow_maxsize);
 203 }
 204
 205 static const char * get_device_id(LPCGUID pGuid)
 206 {
 207     if (IsEqualGUID(&DSDEVID_DefaultPlayback, pGuid))
 208         return "DSDEVID_DefaultPlayback";
 209     else if (IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuid))
 210         return "DSDEVID_DefaultVoicePlayback";
 211     else if (IsEqualGUID(&DSDEVID_DefaultCapture, pGuid))
 212         return "DSDEVID_DefaultCapture";
 213     else if (IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuid))
 214         return "DSDEVID_DefaultVoiceCapture";
 215     return debugstr_guid(pGuid);
 216 }
 217
 218 /* The MMDeviceEnumerator object has to be created & destroyed
 219  * from the same thread. */
 220 static DWORD WINAPI devenum_thread_proc(void *arg)
 221 {
 222     HANDLE evt = arg;
 223     HRESULT hr;
 224     MSG msg;
 225
 226     hr = CoInitializeEx(NULL, COINIT_APARTMENTTHREADED);
 227     if(FAILED(hr)){
 228          ERR("CoInitializeEx failed: %08x\n", hr);
 229          return 1;
 230     }
 231
 232     hr = CoCreateInstance(&CLSID_MMDeviceEnumerator, NULL,
 233             CLSCTX_INPROC_SERVER, &IID_IMMDeviceEnumerator, (void**)&g_devenum);
 234     if(FAILED(hr)){
 235         ERR("CoCreateInstance failed: %08x\n", hr);
 236         CoUninitialize();
 237         return 1;
 238     }
 239
 240     SetEvent(evt);
 241
 242     PeekMessageW(&msg, NULL, WM_USER, WM_USER, PM_NOREMOVE);
 243
 244     while(GetMessageW(&msg, NULL, 0, 0)){
 245         if(msg.hwnd)
 246             DispatchMessageW(&msg);
 247         else
 248             ERR("Unknown message: %04x\n", msg.message);
 249     }
 250
 251     IMMDeviceEnumerator_Release(g_devenum);
 252     g_devenum = NULL;
 253     CoUninitialize();
 254
 255     return 0;
 256 }
 257
 258 static IMMDeviceEnumerator *get_mmdevenum(void)
 259 {
 260     HANDLE events[2];
 261     DWORD wait;
 262
 263     EnterCriticalSection(&g_devenum_lock);
 264
 265     if(g_devenum){
 266         LeaveCriticalSection(&g_devenum_lock);
 267         return g_devenum;
 268     }
 269
 270     events[0] = CreateEventW(NULL, FALSE, FALSE, NULL);
 271
 272     g_devenum_thread = CreateThread(NULL, 0, devenum_thread_proc,
 273             events[0], 0, NULL);
 274     if(!g_devenum_thread){
 275         LeaveCriticalSection(&g_devenum_lock);
 276         CloseHandle(events[0]);
 277         return NULL;
 278     }
 279
 280     events[1] = g_devenum_thread;
 281     wait = WaitForMultipleObjects(2, events, FALSE, INFINITE);
 282     CloseHandle(events[0]);
 283     if(wait != WAIT_OBJECT_0){
 284         if(wait == 1 + WAIT_OBJECT_0){
 285             CloseHandle(g_devenum_thread);
 286             g_devenum_thread = NULL;
 287         }
 288         LeaveCriticalSection(&g_devenum_lock);
 289         return NULL;
 290     }
 291
 292     LeaveCriticalSection(&g_devenum_lock);
 293
 294     return g_devenum;
 295 }
 296
 297 static HRESULT get_mmdevice_guid(IMMDevice *device, IPropertyStore *ps,
 298         GUID *guid)
 299 {
 300     PROPVARIANT pv;
 301     HRESULT hr;
 302
 303     if(!ps){
 304         hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
 305         if(FAILED(hr)){
 306             WARN("OpenPropertyStore failed: %08x\n", hr);
 307             return hr;
 308         }
 309     }else
 310         IPropertyStore_AddRef(ps);
 311
 312     PropVariantInit(&pv);
 313
 314     hr = IPropertyStore_GetValue(ps, &PKEY_AudioEndpoint_GUID, &pv);
 315     if(FAILED(hr)){
 316         IPropertyStore_Release(ps);
 317         WARN("GetValue(GUID) failed: %08x\n", hr);
 318         return hr;
 319     }
 320
 321     CLSIDFromString(pv.u.pwszVal, guid);
 322
 323     PropVariantClear(&pv);
 324     IPropertyStore_Release(ps);
 325
 326     return S_OK;
 327 }
 328
 329 /***************************************************************************
 330  * GetDeviceID  [DSOUND.9]
 331  *
 332  * Retrieves unique identifier of default device specified
 333  *
 334  * PARAMS
 335  *    pGuidSrc  [I] Address of device GUID.
 336  *    pGuidDest [O] Address to receive unique device GUID.
 337  *
 338  * RETURNS
 339  *    Success: DS_OK
 340  *    Failure: DSERR_INVALIDPARAM
 341  *
 342  * NOTES
 343  *    pGuidSrc is a valid device GUID or DSDEVID_DefaultPlayback,
 344  *    DSDEVID_DefaultCapture, DSDEVID_DefaultVoicePlayback, or
 345  *    DSDEVID_DefaultVoiceCapture.
 346  *    Returns pGuidSrc if pGuidSrc is a valid device or the device
 347  *    GUID for the specified constants.
 348  */
 349 HRESULT WINAPI GetDeviceID(LPCGUID pGuidSrc, LPGUID pGuidDest)
 350 {
 351     IMMDeviceEnumerator *devenum;
 352     EDataFlow flow = (EDataFlow)-1;
 353     ERole role = (ERole)-1;
 354     HRESULT hr;
 355
 356     TRACE("(%s,%p)\n", get_device_id(pGuidSrc),pGuidDest);
 357
 358     if(!pGuidSrc || !pGuidDest)
 359         return DSERR_INVALIDPARAM;
 360
 361     devenum = get_mmdevenum();
 362     if(!devenum)
 363         return DSERR_GENERIC;
 364
 365     if(IsEqualGUID(&DSDEVID_DefaultPlayback, pGuidSrc)){
 366         role = eMultimedia;
 367         flow = eRender;
 368     }else if(IsEqualGUID(&DSDEVID_DefaultVoicePlayback, pGuidSrc)){
 369         role = eCommunications;
 370         flow = eRender;
 371     }else if(IsEqualGUID(&DSDEVID_DefaultCapture, pGuidSrc)){
 372         role = eMultimedia;
 373         flow = eCapture;
 374     }else if(IsEqualGUID(&DSDEVID_DefaultVoiceCapture, pGuidSrc)){
 375         role = eCommunications;
 376         flow = eCapture;
 377     }
 378
 379     if(role != (ERole)-1 && flow != (EDataFlow)-1){
 380         IMMDevice *device;
 381
 382         hr = IMMDeviceEnumerator_GetDefaultAudioEndpoint(devenum,
 383                 flow, role, &device);
 384         if(FAILED(hr)){
 385             WARN("GetDefaultAudioEndpoint failed: %08x\n", hr);
 386             return DSERR_NODRIVER;
 387         }
 388
 389         hr = get_mmdevice_guid(device, NULL, pGuidDest);
 390         IMMDevice_Release(device);
 391
 392         return (hr == S_OK) ? DS_OK : hr;
 393     }
 394
 395     *pGuidDest = *pGuidSrc;
 396
 397     return DS_OK;
 398 }
 399
 400 struct morecontext
 401 {
 402     LPDSENUMCALLBACKA callA;
 403     LPVOID data;
 404 };
 405
 406 static BOOL CALLBACK a_to_w_callback(LPGUID guid, LPCWSTR descW, LPCWSTR modW, LPVOID data)
 407 {
 408     struct morecontext *context = data;
 409     char descA[MAXPNAMELEN], modA[MAXPNAMELEN];
 410
 411     WideCharToMultiByte(CP_ACP, 0, descW, -1, descA, sizeof(descA), NULL, NULL);
 412     WideCharToMultiByte(CP_ACP, 0, modW, -1, modA, sizeof(modA), NULL, NULL);
 413
 414     return context->callA(guid, descA, modA, context->data);
 415 }
 416
 417 /***************************************************************************
 418  * DirectSoundEnumerateA [DSOUND.2]
 419  *
 420  * Enumerate all DirectSound drivers installed in the system
 421  *
 422  * PARAMS
 423  *    lpDSEnumCallback  [I] Address of callback function.
 424  *    lpContext         [I] Address of user defined context passed to callback function.
 425  *
 426  * RETURNS
 427  *    Success: DS_OK
 428  *    Failure: DSERR_INVALIDPARAM
 429  */
 430 HRESULT WINAPI DirectSoundEnumerateA(
 431     LPDSENUMCALLBACKA lpDSEnumCallback,
 432     LPVOID lpContext)
 433 {
 434     struct morecontext context;
 435
 436     if (lpDSEnumCallback == NULL) {
 437         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 438         return DSERR_INVALIDPARAM;
 439     }
 440
 441     context.callA = lpDSEnumCallback;
 442     context.data = lpContext;
 443
 444     return DirectSoundEnumerateW(a_to_w_callback, &context);
 445 }
 446
 447 HRESULT get_mmdevice(EDataFlow flow, const GUID *tgt, IMMDevice **device)
 448 {
 449     IMMDeviceEnumerator *devenum;
 450     IMMDeviceCollection *coll;
 451     UINT count, i;
 452     HRESULT hr;
 453
 454     devenum = get_mmdevenum();
 455     if(!devenum)
 456         return DSERR_GENERIC;
 457
 458     hr = IMMDeviceEnumerator_EnumAudioEndpoints(devenum, flow,
 459             DEVICE_STATE_ACTIVE, &coll);
 460     if(FAILED(hr)){
 461         WARN("EnumAudioEndpoints failed: %08x\n", hr);
 462         return hr;
 463     }
 464
 465     hr = IMMDeviceCollection_GetCount(coll, &count);
 466     if(FAILED(hr)){
 467         IMMDeviceCollection_Release(coll);
 468         WARN("GetCount failed: %08x\n", hr);
 469         return hr;
 470     }
 471
 472     for(i = 0; i < count; ++i){
 473         GUID guid;
 474
 475         hr = IMMDeviceCollection_Item(coll, i, device);
 476         if(FAILED(hr))
 477             continue;
 478
 479         hr = get_mmdevice_guid(*device, NULL, &guid);
 480         if(FAILED(hr)){
 481             IMMDevice_Release(*device);
 482             continue;
 483         }
 484
 485         if(IsEqualGUID(&guid, tgt))
 486             return DS_OK;
 487
 488         IMMDevice_Release(*device);
 489     }
 490
 491     WARN("No device with GUID %s found!\n", wine_dbgstr_guid(tgt));
 492
 493     return DSERR_INVALIDPARAM;
 494 }
 495
 496 /* S_FALSE means the callback returned FALSE at some point
 497  * S_OK means the callback always returned TRUE */
 498 HRESULT enumerate_mmdevices(EDataFlow flow, GUID *guids,
 499         LPDSENUMCALLBACKW cb, void *user)
 500 {
 501     IMMDeviceEnumerator *devenum;
 502     IMMDeviceCollection *coll;
 503     UINT count, i;
 504     BOOL keep_going;
 505     HRESULT hr;
 506
 507     static const WCHAR primary_desc[] = {'P','r','i','m','a','r','y',' ',
 508         'S','o','u','n','d',' ','D','r','i','v','e','r',0};
 509     static const WCHAR empty_drv[] = {0};
 510
 511     devenum = get_mmdevenum();
 512     if(!devenum)
 513         return DS_OK;
 514
 515     hr = IMMDeviceEnumerator_EnumAudioEndpoints(g_devenum, flow,
 516             DEVICE_STATE_ACTIVE, &coll);
 517     if(FAILED(hr)){
 518         WARN("EnumAudioEndpoints failed: %08x\n", hr);
 519         return DS_OK;
 520     }
 521
 522     hr = IMMDeviceCollection_GetCount(coll, &count);
 523     if(FAILED(hr)){
 524         IMMDeviceCollection_Release(coll);
 525         WARN("GetCount failed: %08x\n", hr);
 526         return DS_OK;
 527     }
 528
 529     if(count == 0)
 530         return DS_OK;
 531
 532     keep_going = cb(NULL, primary_desc, empty_drv, user);
 533
 534     for(i = 0; keep_going && i < count; ++i){
 535         IMMDevice *device;
 536         IPropertyStore *ps;
 537         PROPVARIANT pv;
 538
 539         PropVariantInit(&pv);
 540
 541         hr = IMMDeviceCollection_Item(coll, i, &device);
 542         if(FAILED(hr)){
 543             WARN("Item failed: %08x\n", hr);
 544             continue;
 545         }
 546
 547         hr = IMMDevice_OpenPropertyStore(device, STGM_READ, &ps);
 548         if(FAILED(hr)){
 549             IMMDevice_Release(device);
 550             WARN("OpenPropertyStore failed: %08x\n", hr);
 551             continue;
 552         }
 553
 554         hr = get_mmdevice_guid(device, ps, &guids[i]);
 555         if(FAILED(hr)){
 556             IPropertyStore_Release(ps);
 557             IMMDevice_Release(device);
 558             continue;
 559         }
 560
 561         hr = IPropertyStore_GetValue(ps,
 562                 (const PROPERTYKEY *)&DEVPKEY_Device_FriendlyName, &pv);
 563         if(FAILED(hr)){
 564             IPropertyStore_Release(ps);
 565             IMMDevice_Release(device);
 566             WARN("GetValue(FriendlyName) failed: %08x\n", hr);
 567             continue;
 568         }
 569
 570         keep_going = cb(&guids[i], pv.u.pwszVal, wine_vxd_drv, user);
 571
 572         PropVariantClear(&pv);
 573         IPropertyStore_Release(ps);
 574         IMMDevice_Release(device);
 575     }
 576
 577     IMMDeviceCollection_Release(coll);
 578
 579     return (keep_going == TRUE) ? S_OK : S_FALSE;
 580 }
 581
 582 /***************************************************************************
 583  * DirectSoundEnumerateW [DSOUND.3]
 584  *
 585  * Enumerate all DirectSound drivers installed in the system
 586  *
 587  * PARAMS
 588  *    lpDSEnumCallback  [I] Address of callback function.
 589  *    lpContext         [I] Address of user defined context passed to callback function.
 590  *
 591  * RETURNS
 592  *    Success: DS_OK
 593  *    Failure: DSERR_INVALIDPARAM
 594  */
 595 HRESULT WINAPI DirectSoundEnumerateW(
 596         LPDSENUMCALLBACKW lpDSEnumCallback,
 597         LPVOID lpContext )
 598 {
 599     HRESULT hr;
 600
 601     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext);
 602
 603     if (lpDSEnumCallback == NULL) {
 604         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 605         return DSERR_INVALIDPARAM;
 606     }
 607
 608     setup_dsound_options();
 609
 610     hr = enumerate_mmdevices(eRender, DSOUND_renderer_guids,
 611             lpDSEnumCallback, lpContext);
 612     return SUCCEEDED(hr) ? DS_OK : hr;
 613 }
 614
 615 /***************************************************************************
 616  * DirectSoundCaptureEnumerateA [DSOUND.7]
 617  *
 618  * Enumerate all DirectSound drivers installed in the system.
 619  *
 620  * PARAMS
 621  *    lpDSEnumCallback  [I] Address of callback function.
 622  *    lpContext         [I] Address of user defined context passed to callback function.
 623  *
 624  * RETURNS
 625  *    Success: DS_OK
 626  *    Failure: DSERR_INVALIDPARAM
 627  */
 628 HRESULT WINAPI DirectSoundCaptureEnumerateA(
 629     LPDSENUMCALLBACKA lpDSEnumCallback,
 630     LPVOID lpContext)
 631 {
 632     struct morecontext context;
 633
 634     if (lpDSEnumCallback == NULL) {
 635         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 636         return DSERR_INVALIDPARAM;
 637     }
 638
 639     context.callA = lpDSEnumCallback;
 640     context.data = lpContext;
 641
 642     return DirectSoundCaptureEnumerateW(a_to_w_callback, &context);
 643 }
 644
 645 /***************************************************************************
 646  * DirectSoundCaptureEnumerateW [DSOUND.8]
 647  *
 648  * Enumerate all DirectSound drivers installed in the system.
 649  *
 650  * PARAMS
 651  *    lpDSEnumCallback  [I] Address of callback function.
 652  *    lpContext         [I] Address of user defined context passed to callback function.
 653  *
 654  * RETURNS
 655  *    Success: DS_OK
 656  *    Failure: DSERR_INVALIDPARAM
 657  */
 658 HRESULT WINAPI
 659 DirectSoundCaptureEnumerateW(
 660     LPDSENUMCALLBACKW lpDSEnumCallback,
 661     LPVOID lpContext)
 662 {
 663     HRESULT hr;
 664
 665     TRACE("(%p,%p)\n", lpDSEnumCallback, lpContext );
 666
 667     if (lpDSEnumCallback == NULL) {
 668         WARN("invalid parameter: lpDSEnumCallback == NULL\n");
 669         return DSERR_INVALIDPARAM;
 670     }
 671
 672     setup_dsound_options();
 673
 674     hr = enumerate_mmdevices(eCapture, DSOUND_capture_guids,
 675             lpDSEnumCallback, lpContext);
 676     return SUCCEEDED(hr) ? DS_OK : hr;
 677 }
 678
 679 /*******************************************************************************
 680  * DirectSound ClassFactory
 681  */
 682
 683 typedef  HRESULT (*FnCreateInstance)(REFIID riid, LPVOID *ppobj);
 684
 685 typedef struct {
 686     IClassFactory IClassFactory_iface;
 687     REFCLSID rclsid;
 688     FnCreateInstance pfnCreateInstance;
 689 } IClassFactoryImpl;
 690
 691 static inline IClassFactoryImpl *impl_from_IClassFactory(IClassFactory *iface)
 692 {
 693     return CONTAINING_RECORD(iface, IClassFactoryImpl, IClassFactory_iface);
 694 }
 695
 696 static HRESULT WINAPI
 697 DSCF_QueryInterface(LPCLASSFACTORY iface, REFIID riid, LPVOID *ppobj)
 698 {
 699     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 700     TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
 701     if (ppobj == NULL)
 702         return E_POINTER;
 703     if (IsEqualIID(riid, &IID_IUnknown) ||
 704         IsEqualIID(riid, &IID_IClassFactory))
 705     {
 706         *ppobj = iface;
 707         IUnknown_AddRef(iface);
 708         return S_OK;
 709     }
 710     *ppobj = NULL;
 711     return E_NOINTERFACE;
 712 }
 713
 714 static ULONG WINAPI DSCF_AddRef(LPCLASSFACTORY iface)
 715 {
 716     return 2;
 717 }
 718
 719 static ULONG WINAPI DSCF_Release(LPCLASSFACTORY iface)
 720 {
 721     /* static class, won't be freed */
 722     return 1;
 723 }
 724
 725 static HRESULT WINAPI DSCF_CreateInstance(
 726     LPCLASSFACTORY iface,
 727     LPUNKNOWN pOuter,
 728     REFIID riid,
 729     LPVOID *ppobj)
 730 {
 731     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 732     TRACE("(%p, %p, %s, %p)\n", This, pOuter, debugstr_guid(riid), ppobj);
 733
 734     if (pOuter)
 735         return CLASS_E_NOAGGREGATION;
 736
 737     if (ppobj == NULL) {
 738         WARN("invalid parameter\n");
 739         return DSERR_INVALIDPARAM;
 740     }
 741     *ppobj = NULL;
 742     return This->pfnCreateInstance(riid, ppobj);
 743 }
 744
 745 static HRESULT WINAPI DSCF_LockServer(LPCLASSFACTORY iface, BOOL dolock)
 746 {
 747     IClassFactoryImpl *This = impl_from_IClassFactory(iface);
 748     FIXME("(%p, %d) stub!\n", This, dolock);
 749     return S_OK;
 750 }
 751
 752 static const IClassFactoryVtbl DSCF_Vtbl = {
 753     DSCF_QueryInterface,
 754     DSCF_AddRef,
 755     DSCF_Release,
 756     DSCF_CreateInstance,
 757     DSCF_LockServer
 758 };
 759
 760 static IClassFactoryImpl DSOUND_CF[] = {
 761     { { &DSCF_Vtbl }, &CLSID_DirectSound, (FnCreateInstance)DSOUND_Create },
 762     { { &DSCF_Vtbl }, &CLSID_DirectSound8, (FnCreateInstance)DSOUND_Create8 },
 763     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture, (FnCreateInstance)DSOUND_CaptureCreate },
 764     { { &DSCF_Vtbl }, &CLSID_DirectSoundCapture8, (FnCreateInstance)DSOUND_CaptureCreate8 },
 765     { { &DSCF_Vtbl }, &CLSID_DirectSoundFullDuplex, (FnCreateInstance)DSOUND_FullDuplexCreate },
 766     { { &DSCF_Vtbl }, &CLSID_DirectSoundPrivate, (FnCreateInstance)IKsPrivatePropertySetImpl_Create },
 767     { { NULL }, NULL, NULL }
 768 };
 769
 770 /*******************************************************************************
 771  * DllGetClassObject [DSOUND.@]
 772  * Retrieves class object from a DLL object
 773  *
 774  * NOTES
 775  *    Docs say returns STDAPI
 776  *
 777  * PARAMS
 778  *    rclsid [I] CLSID for the class object
 779  *    riid   [I] Reference to identifier of interface for class object
 780  *    ppv    [O] Address of variable to receive interface pointer for riid
 781  *
 782  * RETURNS
 783  *    Success: S_OK
 784  *    Failure: CLASS_E_CLASSNOTAVAILABLE, E_OUTOFMEMORY, E_INVALIDARG,
 785  *             E_UNEXPECTED
 786  */
 787 HRESULT WINAPI DllGetClassObject(REFCLSID rclsid, REFIID riid, LPVOID *ppv)
 788 {
 789     int i = 0;
 790     TRACE("(%s, %s, %p)\n", debugstr_guid(rclsid), debugstr_guid(riid), ppv);
 791
 792     if (ppv == NULL) {
 793         WARN("invalid parameter\n");
 794         return E_INVALIDARG;
 795     }
 796
 797     *ppv = NULL;
 798
 799     if (!IsEqualIID(riid, &IID_IClassFactory) &&
 800         !IsEqualIID(riid, &IID_IUnknown)) {
 801         WARN("no interface for %s\n", debugstr_guid(riid));
 802         return E_NOINTERFACE;
 803     }
 804
 805     while (NULL != DSOUND_CF[i].rclsid) {
 806         if (IsEqualGUID(rclsid, DSOUND_CF[i].rclsid)) {
 807             DSCF_AddRef(&DSOUND_CF[i].IClassFactory_iface);
 808             *ppv = &DSOUND_CF[i];
 809             return S_OK;
 810         }
 811         i++;
 812     }
 813
 814     WARN("(%s, %s, %p): no class found.\n", debugstr_guid(rclsid),
 815          debugstr_guid(riid), ppv);
 816     return CLASS_E_CLASSNOTAVAILABLE;
 817 }
 818
 819
 820 /*******************************************************************************
 821  * DllCanUnloadNow [DSOUND.4]
 822  * Determines whether the DLL is in use.
 823  *
 824  * RETURNS
 825  *    Can unload now: S_OK
 826  *    Cannot unload now (the DLL is still active): S_FALSE
 827  */
 828 HRESULT WINAPI DllCanUnloadNow(void)
 829 {
 830     return S_FALSE;
 831 }
 832
 833 #define INIT_GUID(guid, l, w1, w2, b1, b2, b3, b4, b5, b6, b7, b8)      \
 834         guid.Data1 = l; guid.Data2 = w1; guid.Data3 = w2;               \
 835         guid.Data4[0] = b1; guid.Data4[1] = b2; guid.Data4[2] = b3;     \
 836         guid.Data4[3] = b4; guid.Data4[4] = b5; guid.Data4[5] = b6;     \
 837         guid.Data4[6] = b7; guid.Data4[7] = b8;
 838
 839 /***********************************************************************
 840  *           DllMain (DSOUND.init)
 841  */
 842 BOOL WINAPI DllMain(HINSTANCE hInstDLL, DWORD fdwReason, LPVOID lpvReserved)
 843 {
 844     TRACE("(%p %d %p)\n", hInstDLL, fdwReason, lpvReserved);
 845
 846     switch (fdwReason) {
 847     case DLL_PROCESS_ATTACH:
 848         TRACE("DLL_PROCESS_ATTACH\n");
 849         instance = hInstDLL;
 850         DisableThreadLibraryCalls(hInstDLL);
 851         /* Increase refcount on dsound by 1 */
 852         GetModuleHandleExW(GET_MODULE_HANDLE_EX_FLAG_FROM_ADDRESS, (LPCWSTR)hInstDLL, &hInstDLL);
 853         InitializeCriticalSection(&DSOUND_renderers_lock);
 854         InitializeCriticalSection(&DSOUND_capturers_lock);
 855         InitializeCriticalSection(&g_devenum_lock);
 856         break;
 857     case DLL_PROCESS_DETACH:
 858         TRACE("DLL_PROCESS_DETACH\n");
 859         break;
 860     default:
 861         TRACE("UNKNOWN REASON\n");
 862         break;
 863     }
 864     return TRUE;
 865 }
 866
 867 /***********************************************************************
 868  *              DllRegisterServer (DSOUND.@)
 869  */
 870 HRESULT WINAPI DllRegisterServer(void)
 871 {
 872     return __wine_register_resources( instance );
 873 }
 874
 875 /***********************************************************************
 876  *              DllUnregisterServer (DSOUND.@)
 877  */
 878 HRESULT WINAPI DllUnregisterServer(void)
 879 {
 880     return __wine_unregister_resources( instance );
 881 }