dlls/mmdevapi/audio.c

   1 /*
   2  * Copyright 2010 Maarten Lankhorst for Codeweavers
   3  *
   4  * This library is free software; you can redistribute it and/or
   5  * modify it under the terms of the GNU Lesser General Public
   6  * License as published by the Free Software Foundation; either
   7  * version 2.1 of the License, or (at your option) any later version.
   8  *
   9  * This library is distributed in the hope that it will be useful,
  10  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  11  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  12  * Lesser General Public License for more details.
  13  *
  14  * You should have received a copy of the GNU Lesser General Public
  15  * License along with this library; if not, write to the Free Software
  16  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  17  */
  18
  19 #define NONAMELESSUNION
  20 #define CINTERFACE
  21 #define COBJMACROS
  22 #include "config.h"
  23
  24 #include <stdarg.h>
  25 #ifdef HAVE_AL_AL_H
  26 #include <AL/al.h>
  27 #include <AL/alc.h>
  28 #elif defined(HAVE_OPENAL_AL_H)
  29 #include <OpenAL/al.h>
  30 #include <OpenAL/alc.h>
  31 #endif
  32
  33 #include "windef.h"
  34 #include "winbase.h"
  35 #include "winnls.h"
  36 #include "winreg.h"
  37 #include "wine/debug.h"
  38 #include "wine/unicode.h"
  39
  40 #include "ole2.h"
  41 #include "mmdeviceapi.h"
  42 #include "dshow.h"
  43 #include "dsound.h"
  44 #include "audioclient.h"
  45 #include "endpointvolume.h"
  46 #include "audiopolicy.h"
  47
  48 #include "mmdevapi.h"
  49
  50 WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);
  51
  52 #ifdef HAVE_OPENAL
  53
  54 typedef struct ACRender ACRender;
  55 typedef struct ACCapture ACCapture;
  56 typedef struct ACSession ACSession;
  57 typedef struct ASVolume ASVolume;
  58 typedef struct AClock AClock;
  59
  60 typedef struct ACImpl {
  61     const IAudioClientVtbl *lpVtbl;
  62     LONG ref;
  63
  64     MMDevice *parent;
  65     BOOL init, running;
  66     CRITICAL_SECTION *crst;
  67     HANDLE handle;
  68     DWORD locked, flags, bufsize, pad, padpartial, ofs, psize;
  69     BYTE *buffer;
  70     WAVEFORMATEX *pwfx;
  71     ALuint source;
  72     INT64 frameswritten;
  73     REFERENCE_TIME laststamp;
  74     HANDLE timer_id;
  75     ALCdevice *capdev;
  76     ALint format;
  77
  78     ACRender *render;
  79     ACCapture *capture;
  80     ACSession *session;
  81     ASVolume *svolume;
  82     AClock *clock;
  83 } ACImpl;
  84
  85 struct ACRender {
  86     const IAudioRenderClientVtbl *lpVtbl;
  87     LONG ref;
  88     ACImpl *parent;
  89 };
  90
  91 struct ACCapture {
  92     const IAudioCaptureClientVtbl *lpVtbl;
  93     LONG ref;
  94     ACImpl *parent;
  95 };
  96
  97 struct ACSession {
  98     const IAudioSessionControl2Vtbl *lpVtbl;
  99     LONG ref;
 100     ACImpl *parent;
 101 };
 102
 103 struct ASVolume {
 104     const ISimpleAudioVolumeVtbl *lpVtbl;
 105     LONG ref;
 106     ACImpl *parent;
 107 };
 108
 109 struct AClock {
 110     const IAudioClockVtbl *lpVtbl;
 111     const IAudioClock2Vtbl *lp2Vtbl;
 112     LONG ref;
 113     ACImpl *parent;
 114 };
 115
 116 static const IAudioClientVtbl ACImpl_Vtbl;
 117 static const IAudioRenderClientVtbl ACRender_Vtbl;
 118 static const IAudioCaptureClientVtbl ACCapture_Vtbl;
 119 static const IAudioSessionControl2Vtbl ACSession_Vtbl;
 120 static const ISimpleAudioVolumeVtbl ASVolume_Vtbl;
 121 static const IAudioClockVtbl AClock_Vtbl;
 122 static const IAudioClock2Vtbl AClock2_Vtbl;
 123
 124 static HRESULT AudioRenderClient_Create(ACImpl *parent, ACRender **ppv);
 125 static void AudioRenderClient_Destroy(ACRender *This);
 126 static HRESULT AudioCaptureClient_Create(ACImpl *parent, ACCapture **ppv);
 127 static void AudioCaptureClient_Destroy(ACCapture *This);
 128 static HRESULT AudioSessionControl_Create(ACImpl *parent, ACSession **ppv);
 129 static void AudioSessionControl_Destroy(ACSession *This);
 130 static HRESULT AudioSimpleVolume_Create(ACImpl *parent, ASVolume **ppv);
 131 static void AudioSimpleVolume_Destroy(ASVolume *This);
 132 static HRESULT AudioClock_Create(ACImpl *parent, AClock **ppv);
 133 static void AudioClock_Destroy(AClock *This);
 134
 135 static int get_format_PCM(WAVEFORMATEX *format)
 136 {
 137     if (format->nChannels > 2) {
 138         FIXME("nChannels > 2 not documented for WAVE_FORMAT_PCM!\n");
 139         return 0;
 140     }
 141
 142     format->cbSize = 0;
 143
 144     if (format->nBlockAlign != format->wBitsPerSample/8*format->nChannels) {
 145         WARN("Invalid nBlockAlign %u, from %u %u\n",
 146              format->nBlockAlign, format->wBitsPerSample, format->nChannels);
 147         return 0;
 148     }
 149
 150     switch (format->wBitsPerSample) {
 151         case 8: {
 152             switch (format->nChannels) {
 153             case 1: return AL_FORMAT_MONO8;
 154             case 2: return AL_FORMAT_STEREO8;
 155             }
 156         }
 157         case 16: {
 158             switch (format->nChannels) {
 159             case 1: return AL_FORMAT_MONO16;
 160             case 2: return AL_FORMAT_STEREO16;
 161             }
 162         }
 163     }
 164
 165     if (!(format->wBitsPerSample % 8))
 166         WARN("Could not get OpenAL format (%d-bit, %d channels)\n",
 167              format->wBitsPerSample, format->nChannels);
 168     return 0;
 169 }
 170
 171 /* Speaker configs */
 172 #define MONO SPEAKER_FRONT_CENTER
 173 #define STEREO (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT)
 174 #define REAR (SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
 175 #define QUAD (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
 176 #define X5DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
 177 #define X6DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_CENTER|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
 178 #define X7DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
 179
 180 static int get_format_EXT(WAVEFORMATEX *format)
 181 {
 182     WAVEFORMATEXTENSIBLE *wfe;
 183
 184     if(format->cbSize < sizeof(WAVEFORMATEXTENSIBLE)-sizeof(WAVEFORMATEX)) {
 185         WARN("Invalid cbSize specified for WAVE_FORMAT_EXTENSIBLE (%d)\n", format->cbSize);
 186         return 0;
 187     }
 188
 189     wfe = (WAVEFORMATEXTENSIBLE*)format;
 190     wfe->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE)-sizeof(WAVEFORMATEX);
 191     if (wfe->Samples.wValidBitsPerSample &&
 192         wfe->Samples.wValidBitsPerSample != format->wBitsPerSample) {
 193         FIXME("wValidBitsPerSample(%u) != wBitsPerSample(%u) unsupported\n",
 194               wfe->Samples.wValidBitsPerSample, format->wBitsPerSample);
 195         return 0;
 196     }
 197
 198     TRACE("Extensible values:\n"
 199           "    Samples     = %d\n"
 200           "    ChannelMask = 0x%08x\n"
 201           "    SubFormat   = %s\n",
 202           wfe->Samples.wReserved, wfe->dwChannelMask,
 203           debugstr_guid(&wfe->SubFormat));
 204
 205     if (wfe->dwChannelMask != MONO
 206         && wfe->dwChannelMask != STEREO
 207         && !palIsExtensionPresent("AL_EXT_MCFORMATS")) {
 208         /* QUAD PCM might still work, special case */
 209         if (palIsExtensionPresent("AL_LOKI_quadriphonic")
 210             && IsEqualGUID(&wfe->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM)
 211             && wfe->dwChannelMask == QUAD) {
 212             if (format->wBitsPerSample == 16)
 213                 return AL_FORMAT_QUAD16_LOKI;
 214             else if (format->wBitsPerSample == 8)
 215                 return AL_FORMAT_QUAD8_LOKI;
 216         }
 217         WARN("Not all formats available\n");
 218         return 0;
 219     }
 220
 221     if(IsEqualGUID(&wfe->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM)) {
 222         if (format->wBitsPerSample == 8) {
 223             switch (wfe->dwChannelMask) {
 224             case   MONO: return AL_FORMAT_MONO8;
 225             case STEREO: return AL_FORMAT_STEREO8;
 226             case   REAR: return AL_FORMAT_REAR8;
 227             case   QUAD: return AL_FORMAT_QUAD8;
 228             case X5DOT1: return AL_FORMAT_51CHN8;
 229             case X6DOT1: return AL_FORMAT_61CHN8;
 230             case X7DOT1: return AL_FORMAT_71CHN8;
 231             default: break;
 232             }
 233         } else if (format->wBitsPerSample  == 16) {
 234             switch (wfe->dwChannelMask) {
 235             case   MONO: return AL_FORMAT_MONO16;
 236             case STEREO: return AL_FORMAT_STEREO16;
 237             case   REAR: return AL_FORMAT_REAR16;
 238             case   QUAD: return AL_FORMAT_QUAD16;
 239             case X5DOT1: return AL_FORMAT_51CHN16;
 240             case X6DOT1: return AL_FORMAT_61CHN16;
 241             case X7DOT1: return AL_FORMAT_71CHN16;
 242             default: break;
 243             }
 244         }
 245         else if (!(format->wBitsPerSample  % 8))
 246             ERR("Could not get OpenAL PCM format (%d-bit, mask 0x%08x)\n",
 247                 format->wBitsPerSample, wfe->dwChannelMask);
 248         return 0;
 249     }
 250     else if(IsEqualGUID(&wfe->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) {
 251         if (format->wBitsPerSample != 32) {
 252             WARN("Invalid valid bits %u/32\n", format->wBitsPerSample);
 253             return 0;
 254         }
 255         switch (wfe->dwChannelMask) {
 256         case   MONO: return AL_FORMAT_MONO_FLOAT32;
 257         case STEREO: return AL_FORMAT_STEREO_FLOAT32;
 258         case   REAR: return AL_FORMAT_REAR32;
 259         case   QUAD: return AL_FORMAT_QUAD32;
 260         case X5DOT1: return AL_FORMAT_51CHN32;
 261         case X6DOT1: return AL_FORMAT_61CHN32;
 262         case X7DOT1: return AL_FORMAT_71CHN32;
 263         default:
 264             ERR("Could not get OpenAL float format (%d-bit, mask 0x%08x)\n",
 265                 format->wBitsPerSample, wfe->dwChannelMask);
 266             return 0;
 267         }
 268     }
 269     else if (!IsEqualGUID(&wfe->SubFormat, &GUID_NULL))
 270         ERR("Unhandled extensible format: %s\n", debugstr_guid(&wfe->SubFormat));
 271     return 0;
 272 }
 273
 274 static ALint get_format(WAVEFORMATEX *in)
 275 {
 276     int ret = 0;
 277     if (in->wFormatTag == WAVE_FORMAT_PCM)
 278         ret = get_format_PCM(in);
 279     else if (in->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
 280         ret = get_format_EXT(in);
 281     return ret;
 282 }
 283
 284 static REFERENCE_TIME gettime(void) {
 285     LARGE_INTEGER stamp, freq;
 286     QueryPerformanceCounter(&stamp);
 287     QueryPerformanceFrequency(&freq);
 288     return (stamp.QuadPart * (INT64)10000000) / freq.QuadPart;
 289 }
 290
 291 HRESULT AudioClient_Create(MMDevice *parent, IAudioClient **ppv)
 292 {
 293     ACImpl *This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This));
 294     *ppv = (IAudioClient*)This;
 295     if (!*ppv)
 296         return E_OUTOFMEMORY;
 297     This->crst = &parent->crst;
 298     This->lpVtbl = &ACImpl_Vtbl;
 299     This->ref = 1;
 300     This->parent = parent;
 301     return S_OK;
 302 }
 303
 304 static void AudioClient_Destroy(ACImpl *This)
 305 {
 306     if (This->timer_id)
 307         DeleteTimerQueueTimer(NULL, This->timer_id, INVALID_HANDLE_VALUE);
 308     if (This->render)
 309         AudioRenderClient_Destroy(This->render);
 310     if (This->capture)
 311         AudioCaptureClient_Destroy(This->capture);
 312     if (This->session)
 313         AudioSessionControl_Destroy(This->session);
 314     if (This->svolume)
 315         AudioSimpleVolume_Destroy(This->svolume);
 316     if (This->clock)
 317         AudioClock_Destroy(This->clock);
 318     if (This->parent->flow == eRender && This->init) {
 319         setALContext(This->parent->ctx);
 320         IAudioClient_Stop((IAudioClient*)This);
 321         IAudioClient_Reset((IAudioClient*)This);
 322         palDeleteSources(1, &This->source);
 323         getALError();
 324         popALContext();
 325     }
 326     if (This->capdev)
 327         palcCaptureCloseDevice(This->capdev);
 328     HeapFree(GetProcessHeap(), 0, This->pwfx);
 329     HeapFree(GetProcessHeap(), 0, This->buffer);
 330     HeapFree(GetProcessHeap(), 0, This);
 331 }
 332
 333 static void CALLBACK AC_tick(void *data, BOOLEAN fired)
 334 {
 335     ACImpl *This = data;
 336     DWORD pad;
 337
 338     EnterCriticalSection(This->crst);
 339     if (This->running)
 340         IAudioClient_GetCurrentPadding((IAudioClient*)This, &pad);
 341     LeaveCriticalSection(This->crst);
 342 }
 343
 344 /* Open device and set/update internal mixing format based on information
 345  * openal provides us. if the device cannot be opened, assume 48khz
 346  * Guessing the frequency is harmless, since if GetMixFormat fails to open
 347  * the device, then Initialize will likely fail as well
 348  */
 349 static HRESULT AC_OpenRenderAL(ACImpl *This)
 350 {
 351     char alname[MAX_PATH];
 352     MMDevice *cur = This->parent;
 353
 354     alname[sizeof(alname)-1] = 0;
 355     if (cur->device)
 356         return cur->ctx ? S_OK : AUDCLNT_E_SERVICE_NOT_RUNNING;
 357
 358     WideCharToMultiByte(CP_UNIXCP, 0, cur->alname, -1,
 359                         alname, sizeof(alname)/sizeof(*alname)-1, NULL, NULL);
 360     cur->device = palcOpenDevice(alname);
 361     if (!cur->device) {
 362         ALCenum err = palcGetError(NULL);
 363         FIXME("Could not open device %s: 0x%04x\n", alname, err);
 364         return AUDCLNT_E_DEVICE_IN_USE;
 365     }
 366     cur->ctx = palcCreateContext(cur->device, NULL);
 367     if (!cur->ctx) {
 368         ALCenum err = palcGetError(cur->device);
 369         FIXME("Could not create context: 0x%04x\n", err);
 370         return AUDCLNT_E_SERVICE_NOT_RUNNING;
 371     }
 372     if (!cur->device)
 373         return AUDCLNT_E_DEVICE_IN_USE;
 374     return S_OK;
 375 }
 376
 377 static HRESULT AC_OpenCaptureAL(ACImpl *This)
 378 {
 379     char alname[MAX_PATH];
 380     ALint freq, size;
 381
 382     freq = This->pwfx->nSamplesPerSec;
 383     size = This->bufsize;
 384
 385     alname[sizeof(alname)-1] = 0;
 386     if (This->capdev) {
 387         FIXME("Attempting to open device while already open\n");
 388         return S_OK;
 389     }
 390     WideCharToMultiByte(CP_UNIXCP, 0, This->parent->alname, -1,
 391                         alname, sizeof(alname)/sizeof(*alname)-1, NULL, NULL);
 392     This->capdev = palcCaptureOpenDevice(alname, freq, This->format, size);
 393     if (!This->capdev) {
 394         ALCenum err = palcGetError(NULL);
 395         FIXME("Could not open device %s with buf size %u: 0x%04x\n",
 396               alname, This->bufsize, err);
 397         return AUDCLNT_E_DEVICE_IN_USE;
 398     }
 399     return S_OK;
 400 }
 401
 402 static HRESULT WINAPI AC_QueryInterface(IAudioClient *iface, REFIID riid, void **ppv)
 403 {
 404     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
 405
 406     if (!ppv)
 407         return E_POINTER;
 408     *ppv = NULL;
 409     if (IsEqualIID(riid, &IID_IUnknown)
 410         || IsEqualIID(riid, &IID_IAudioClient))
 411         *ppv = iface;
 412     if (*ppv) {
 413         IUnknown_AddRef((IUnknown*)*ppv);
 414         return S_OK;
 415     }
 416     WARN("Unknown interface %s\n", debugstr_guid(riid));
 417     return E_NOINTERFACE;
 418 }
 419
 420 static ULONG WINAPI AC_AddRef(IAudioClient *iface)
 421 {
 422     ACImpl *This = (ACImpl*)iface;
 423     ULONG ref;
 424     ref = InterlockedIncrement(&This->ref);
 425     TRACE("Refcount now %i\n", ref);
 426     return ref;
 427 }
 428
 429 static ULONG WINAPI AC_Release(IAudioClient *iface)
 430 {
 431     ACImpl *This = (ACImpl*)iface;
 432     ULONG ref;
 433     ref = InterlockedDecrement(&This->ref);
 434     TRACE("Refcount now %i\n", ref);
 435     if (!ref)
 436         AudioClient_Destroy(This);
 437     return ref;
 438 }
 439
 440 static HRESULT WINAPI AC_Initialize(IAudioClient *iface, AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration, REFERENCE_TIME period, const WAVEFORMATEX *pwfx, const GUID *sessionguid)
 441 {
 442     ACImpl *This = (ACImpl*)iface;
 443     HRESULT hr = S_OK;
 444     WAVEFORMATEX *pwfx2;
 445     REFERENCE_TIME time, bufsize;
 446
 447     TRACE("(%p)->(%x,%x,%u,%u,%p,%s)\n", This, mode, flags, (int)duration, (int)period, pwfx, debugstr_guid(sessionguid));
 448     if (This->init)
 449         return AUDCLNT_E_ALREADY_INITIALIZED;
 450     if (mode != AUDCLNT_SHAREMODE_SHARED
 451         && mode != AUDCLNT_SHAREMODE_EXCLUSIVE) {
 452         WARN("Unknown mode %x\n", mode);
 453         return AUDCLNT_E_NOT_INITIALIZED;
 454     }
 455
 456     if (flags & ~(AUDCLNT_STREAMFLAGS_CROSSPROCESS
 457                   |AUDCLNT_STREAMFLAGS_LOOPBACK
 458                   |AUDCLNT_STREAMFLAGS_EVENTCALLBACK
 459                   |AUDCLNT_STREAMFLAGS_NOPERSIST
 460                   |AUDCLNT_STREAMFLAGS_RATEADJUST
 461                   |AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED
 462                   |AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE
 463                   |AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED)) {
 464         WARN("Unknown flags 0x%08x\n", flags);
 465         return E_INVALIDARG;
 466     }
 467     if (flags)
 468         WARN("Flags 0x%08x ignored\n", flags);
 469     if (!pwfx)
 470         return E_POINTER;
 471     if (sessionguid)
 472         WARN("Session guid %s ignored\n", debugstr_guid(sessionguid));
 473
 474     hr = IAudioClient_IsFormatSupported(iface, mode, pwfx, &pwfx2);
 475     CoTaskMemFree(pwfx2);
 476     if (FAILED(hr) || pwfx2) {
 477         WARN("Format not supported, or had to be modified!\n");
 478         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 479     }
 480     EnterCriticalSection(This->crst);
 481     HeapFree(GetProcessHeap(), 0, This->pwfx);
 482     This->pwfx = HeapAlloc(GetProcessHeap(), 0, sizeof(*pwfx) + pwfx->cbSize);
 483     if (!This->pwfx) {
 484         hr = E_OUTOFMEMORY;
 485         goto out;
 486     }
 487     memcpy(This->pwfx, pwfx, sizeof(*pwfx) + pwfx->cbSize);
 488     if (pwfx->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
 489         WAVEFORMATEXTENSIBLE *wfe = (WAVEFORMATEXTENSIBLE *)This->pwfx;
 490         switch (pwfx->nChannels) {
 491             case 1: wfe->dwChannelMask = MONO; break;
 492             case 2: wfe->dwChannelMask = STEREO; break;
 493             case 4: wfe->dwChannelMask = QUAD; break;
 494             case 6: wfe->dwChannelMask = X5DOT1; break;
 495             case 7: wfe->dwChannelMask = X6DOT1; break;
 496             case 8: wfe->dwChannelMask = X7DOT1; break;
 497         default:
 498             ERR("How did we end up with %i channels?\n", pwfx->nChannels);
 499             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 500             goto out;
 501         }
 502     }
 503
 504     hr = IAudioClient_GetDevicePeriod(iface, &time, NULL);
 505     if (FAILED(hr))
 506         goto out;
 507
 508     This->psize = (DWORD64)This->pwfx->nSamplesPerSec * time / (DWORD64)10000000;
 509     if (duration > 20000000)
 510         duration = 20000000;
 511
 512     bufsize = duration / time * This->psize;
 513     if (duration % time)
 514         bufsize += This->psize;
 515     This->bufsize = bufsize;
 516     This->psize *= This->pwfx->nBlockAlign;
 517     bufsize *= pwfx->nBlockAlign;
 518
 519     This->format = get_format(This->pwfx);
 520     if (This->parent->flow == eRender) {
 521         char silence[32];
 522         ALuint buf = 0, towrite;
 523
 524         hr = AC_OpenRenderAL(This);
 525         if (FAILED(hr))
 526             goto out;
 527
 528         /* Test the returned format */
 529         towrite = sizeof(silence);
 530         towrite -= towrite % This->pwfx->nBlockAlign;
 531         if (This->pwfx->wBitsPerSample != 8)
 532             memset(silence, 0, sizeof(silence));
 533         else
 534             memset(silence, 128, sizeof(silence));
 535         setALContext(This->parent->ctx);
 536         getALError();
 537         palGenBuffers(1, &buf);
 538         palBufferData(buf, This->format, silence, towrite, This->pwfx->nSamplesPerSec);
 539         palDeleteBuffers(1, &buf);
 540         if (palGetError())
 541             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 542         else if (!This->source) {
 543             palGenSources(1, &This->source);
 544             palSourcei(This->source, AL_LOOPING, AL_FALSE);
 545             getALError();
 546         }
 547         popALContext();
 548     }
 549     else
 550         hr = AC_OpenCaptureAL(This);
 551
 552     if (FAILED(hr))
 553         goto out;
 554
 555     This->buffer = HeapAlloc(GetProcessHeap(), 0, bufsize);
 556     if (!This->buffer) {
 557         hr = E_OUTOFMEMORY;
 558         goto out;
 559     }
 560     This->flags = flags;
 561     This->handle = NULL;
 562     This->running = FALSE;
 563     This->init = TRUE;
 564 out:
 565     LeaveCriticalSection(This->crst);
 566     return hr;
 567 }
 568
 569 static HRESULT WINAPI AC_GetBufferSize(IAudioClient *iface, UINT32 *frames)
 570 {
 571     ACImpl *This = (ACImpl*)iface;
 572     TRACE("(%p)->(%p)\n", This, frames);
 573     if (!This->init)
 574         return AUDCLNT_E_NOT_INITIALIZED;
 575     if (!frames)
 576         return E_POINTER;
 577     *frames = This->bufsize;
 578     return S_OK;
 579 }
 580
 581 static HRESULT WINAPI AC_GetStreamLatency(IAudioClient *iface, REFERENCE_TIME *latency)
 582 {
 583     ACImpl *This = (ACImpl*)iface;
 584     TRACE("(%p)->(%p)\n", This, latency);
 585
 586     if (!This->init)
 587         return AUDCLNT_E_NOT_INITIALIZED;
 588
 589     if (!latency)
 590         return E_POINTER;
 591
 592     *latency = 50000;
 593
 594     return S_OK;
 595 }
 596
 597 static HRESULT WINAPI AC_GetCurrentPadding(IAudioClient *iface, UINT32 *numpad)
 598 {
 599     ACImpl *This = (ACImpl*)iface;
 600     ALint avail = 0;
 601
 602     TRACE("(%p)->(%p)\n", This, numpad);
 603     if (!This->init)
 604         return AUDCLNT_E_NOT_INITIALIZED;
 605     if (!numpad)
 606         return E_POINTER;
 607     EnterCriticalSection(This->crst);
 608     if (This->parent->flow == eRender) {
 609         UINT64 played = 0;
 610         ALint state, padpart;
 611         setALContext(This->parent->ctx);
 612
 613         palGetSourcei(This->source, AL_BYTE_OFFSET, &padpart);
 614         palGetSourcei(This->source, AL_SOURCE_STATE, &state);
 615         padpart /= This->pwfx->nBlockAlign;
 616         if (state == AL_STOPPED && This->running)
 617             padpart = This->pad;
 618         if (This->running && This->padpartial != padpart) {
 619             This->padpartial = padpart;
 620             This->laststamp = gettime();
 621 #if 0 /* Manipulative lie */
 622         } else if (This->running) {
 623             ALint size = This->pad - padpart;
 624             if (size > This->psize)
 625                 size = This->psize;
 626             played = (gettime() - This->laststamp)*8;
 627             played = played * This->pwfx->nSamplesPerSec / 10000000;
 628             if (played > size)
 629                 played = size;
 630 #endif
 631         }
 632         *numpad = This->pad - This->padpartial - played;
 633         if (This->handle && *numpad + This->psize <= This->bufsize)
 634             SetEvent(This->handle);
 635         getALError();
 636         popALContext();
 637     } else {
 638         DWORD block = This->pwfx->nBlockAlign;
 639         DWORD psize = This->psize / block;
 640         palcGetIntegerv(This->capdev, ALC_CAPTURE_SAMPLES, 1, &avail);
 641         if (avail) {
 642             DWORD ofs = This->ofs + This->pad;
 643             BYTE *buf1;
 644             ofs %= This->bufsize;
 645             buf1 = This->buffer + (ofs * block);
 646             This->laststamp = gettime();
 647             if (This->handle)
 648                 SetEvent(This->handle);
 649
 650             if (ofs + avail <= This->bufsize)
 651                 palcCaptureSamples(This->capdev, buf1, avail);
 652             else {
 653                 DWORD part1 = This->bufsize - ofs;
 654                 palcCaptureSamples(This->capdev, buf1, part1);
 655                 palcCaptureSamples(This->capdev, This->buffer, avail - part1);
 656             }
 657             This->pad += avail;
 658             This->frameswritten += avail;
 659             /* Increase ofs if the app forgets to read */
 660             if (This->pad > This->bufsize) {
 661                 DWORD rest;
 662                 WARN("Overflowed! %u bytes\n", This->pad - This->bufsize);
 663                 This->ofs += This->pad - This->bufsize;
 664                 rest = This->ofs % psize;
 665                 if (rest)
 666                     This->ofs += psize - rest;
 667                 This->ofs %= This->bufsize;
 668                 This->pad = This->bufsize;
 669             }
 670         }
 671         if (This->pad >= psize)
 672             *numpad = psize;
 673         else
 674             *numpad = 0;
 675     }
 676     LeaveCriticalSection(This->crst);
 677
 678     TRACE("%u queued\n", *numpad);
 679     return S_OK;
 680 }
 681
 682 static HRESULT WINAPI AC_IsFormatSupported(IAudioClient *iface, AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *pwfx, WAVEFORMATEX **outpwfx)
 683 {
 684     ACImpl *This = (ACImpl*)iface;
 685     WAVEFORMATEX *tmp;
 686     DWORD mask;
 687     DWORD size;
 688     TRACE("(%p)->(%x,%p,%p)\n", This, mode, pwfx, outpwfx);
 689     if (!pwfx)
 690         return E_POINTER;
 691
 692     if (mode == AUDCLNT_SHAREMODE_SHARED && !outpwfx)
 693         return E_POINTER;
 694     if (mode != AUDCLNT_SHAREMODE_SHARED
 695         && mode != AUDCLNT_SHAREMODE_EXCLUSIVE) {
 696         WARN("Unknown mode %x\n", mode);
 697         return E_INVALIDARG;
 698     }
 699
 700     if (pwfx->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
 701         size = sizeof(WAVEFORMATEXTENSIBLE);
 702     else if (pwfx->wFormatTag == WAVE_FORMAT_PCM)
 703         size = sizeof(WAVEFORMATEX);
 704     else
 705         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 706
 707     if (pwfx->nSamplesPerSec < 8000
 708         || pwfx->nSamplesPerSec > 192000)
 709         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 710     if (pwfx->wFormatTag != WAVE_FORMAT_EXTENSIBLE
 711         || !IsEqualIID(&((WAVEFORMATEXTENSIBLE*)pwfx)->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) {
 712         if (pwfx->wBitsPerSample > 16)
 713             return AUDCLNT_E_UNSUPPORTED_FORMAT;
 714     }
 715
 716     switch (pwfx->nChannels) {
 717         case 1: mask = MONO; break;
 718         case 2: mask = STEREO; break;
 719         case 4: mask = QUAD; break;
 720         case 6: mask = X5DOT1; break;
 721         case 7: mask = X6DOT1; break;
 722         case 8: mask = X7DOT1; break;
 723         default:
 724             TRACE("Unsupported channel count %i\n", pwfx->nChannels);
 725             return AUDCLNT_E_UNSUPPORTED_FORMAT;;
 726     }
 727     tmp = CoTaskMemAlloc(size);
 728     if (outpwfx)
 729         *outpwfx = tmp;
 730     if (!tmp)
 731         return E_OUTOFMEMORY;
 732
 733     memcpy(tmp, pwfx, size);
 734     tmp->nBlockAlign = tmp->nChannels * tmp->wBitsPerSample / 8;
 735     tmp->nAvgBytesPerSec = tmp->nBlockAlign * tmp->nSamplesPerSec;
 736     tmp->cbSize = size - sizeof(WAVEFORMATEX);
 737     if (tmp->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
 738         WAVEFORMATEXTENSIBLE *ex = (WAVEFORMATEXTENSIBLE*)tmp;
 739
 740         if (ex->Samples.wValidBitsPerSample)
 741             ex->Samples.wValidBitsPerSample = ex->Format.wBitsPerSample;
 742
 743         /* Rear is a special allowed case */
 744         if (ex->dwChannelMask
 745             && !(ex->Format.nChannels == 2 && ex->dwChannelMask == REAR))
 746             ex->dwChannelMask = mask;
 747     }
 748
 749     if (memcmp(pwfx, tmp, size)) {
 750         if (outpwfx)
 751             return S_FALSE;
 752         CoTaskMemFree(tmp);
 753         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 754     }
 755     if (outpwfx)
 756         *outpwfx = NULL;
 757     CoTaskMemFree(tmp);
 758     return S_OK;
 759 }
 760
 761 static HRESULT WINAPI AC_GetMixFormat(IAudioClient *iface, WAVEFORMATEX **pwfx)
 762 {
 763     ACImpl *This = (ACImpl*)iface;
 764     PROPVARIANT pv = { VT_EMPTY };
 765     HRESULT hr = S_OK;
 766
 767     TRACE("(%p)->(%p)\n", This, pwfx);
 768     if (!pwfx)
 769         return E_POINTER;
 770
 771     hr = MMDevice_GetPropValue(&This->parent->devguid, This->parent->flow,
 772                                &PKEY_AudioEngine_DeviceFormat, &pv);
 773     *pwfx = (WAVEFORMATEX*)pv.u.blob.pBlobData;
 774     if (SUCCEEDED(hr) && pv.vt == VT_EMPTY)
 775         return E_FAIL;
 776
 777     TRACE("Returning 0x%08x\n", hr);
 778     return hr;
 779 }
 780
 781 static HRESULT WINAPI AC_GetDevicePeriod(IAudioClient *iface, REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 782 {
 783     ACImpl *This = (ACImpl*)iface;
 784
 785     TRACE("(%p)->(%p)\n", This, minperiod);
 786     if (!defperiod && !minperiod)
 787         return E_POINTER;
 788
 789     if (minperiod)
 790         *minperiod = 30000;
 791     if (defperiod)
 792         *defperiod = 200000;
 793     return S_OK;
 794 }
 795
 796 static HRESULT WINAPI AC_Start(IAudioClient *iface)
 797 {
 798     ACImpl *This = (ACImpl*)iface;
 799     HRESULT hr;
 800     REFERENCE_TIME refresh;
 801
 802     TRACE("(%p)\n", This);
 803     if (!This->init)
 804         return AUDCLNT_E_NOT_INITIALIZED;
 805     if (This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) {
 806         if (!This->handle)
 807             return AUDCLNT_E_EVENTHANDLE_NOT_SET;
 808         FIXME("Event handles not fully tested\n");
 809     }
 810     EnterCriticalSection(This->crst);
 811     if (This->running) {
 812         hr = AUDCLNT_E_NOT_STOPPED;
 813         goto out;
 814     }
 815     if (This->parent->flow == eRender) {
 816         setALContext(This->parent->ctx);
 817         palSourcePlay(This->source);
 818         getALError();
 819         popALContext();
 820     }
 821     else
 822         palcCaptureStart(This->capdev);
 823
 824     AC_GetDevicePeriod(iface, &refresh, NULL);
 825     if (!This->timer_id && This->handle)
 826         CreateTimerQueueTimer(&This->timer_id, NULL, AC_tick, This,
 827                               refresh / 20000, refresh / 20000,
 828                               WT_EXECUTEINTIMERTHREAD);
 829     /* Set to 0, otherwise risk running the clock backwards
 830      * This will cause AudioClock::GetPosition to return the maximum
 831      * possible value for the current buffer
 832      */
 833     This->laststamp = 0;
 834     This->running = TRUE;
 835     hr = S_OK;
 836 out:
 837     LeaveCriticalSection(This->crst);
 838     return hr;
 839 }
 840
 841 static HRESULT WINAPI AC_Stop(IAudioClient *iface)
 842 {
 843     ACImpl *This = (ACImpl*)iface;
 844     HANDLE timer_id;
 845     TRACE("(%p)\n", This);
 846     if (!This->init)
 847         return AUDCLNT_E_NOT_INITIALIZED;
 848     if (!This->running)
 849         return S_FALSE;
 850     EnterCriticalSection(This->crst);
 851     if (This->parent->flow == eRender) {
 852         ALint state;
 853         setALContext(This->parent->ctx);
 854         This->running = FALSE;
 855         palSourcePause(This->source);
 856         while (1) {
 857             state = AL_STOPPED;
 858             palGetSourcei(This->source, AL_SOURCE_STATE, &state);
 859             if (state != AL_PLAYING)
 860                 break;
 861             Sleep(1);
 862         }
 863         getALError();
 864         popALContext();
 865     }
 866     else
 867         palcCaptureStop(This->capdev);
 868     timer_id = This->timer_id;
 869     This->timer_id = 0;
 870     LeaveCriticalSection(This->crst);
 871     if (timer_id)
 872         DeleteTimerQueueTimer(NULL, timer_id, INVALID_HANDLE_VALUE);
 873     return S_OK;
 874 }
 875
 876 static HRESULT WINAPI AC_Reset(IAudioClient *iface)
 877 {
 878     ACImpl *This = (ACImpl*)iface;
 879     HRESULT hr = S_OK;
 880     TRACE("(%p)\n", This);
 881     if (!This->init)
 882         return AUDCLNT_E_NOT_INITIALIZED;
 883     if (This->running)
 884         return AUDCLNT_E_NOT_STOPPED;
 885     EnterCriticalSection(This->crst);
 886     if (This->locked) {
 887         hr = AUDCLNT_E_BUFFER_OPERATION_PENDING;
 888         goto out;
 889     }
 890     if (This->parent->flow == eRender) {
 891         ALuint buf;
 892         ALint n = 0;
 893         setALContext(This->parent->ctx);
 894         palSourceStop(This->source);
 895         palGetSourcei(This->source, AL_BUFFERS_PROCESSED, &n);
 896         while (n--) {
 897             palSourceUnqueueBuffers(This->source, 1, &buf);
 898             palDeleteBuffers(1, &buf);
 899         }
 900         getALError();
 901         popALContext();
 902     } else {
 903         ALint avail = 0;
 904         palcGetIntegerv(This->capdev, ALC_CAPTURE_SAMPLES, 1, &avail);
 905         if (avail)
 906             palcCaptureSamples(This->capdev, This->buffer, avail);
 907     }
 908     This->pad = This->padpartial = 0;
 909     This->ofs = 0;
 910     This->frameswritten = 0;
 911 out:
 912     LeaveCriticalSection(This->crst);
 913     return hr;
 914 }
 915
 916 static HRESULT WINAPI AC_SetEventHandle(IAudioClient *iface, HANDLE handle)
 917 {
 918     ACImpl *This = (ACImpl*)iface;
 919     TRACE("(%p)\n", This);
 920     if (!This->init)
 921         return AUDCLNT_E_NOT_INITIALIZED;
 922     if (!handle)
 923         return E_INVALIDARG;
 924     if (!(This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK))
 925         return AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED;
 926     This->handle = handle;
 927     return S_OK;
 928 }
 929
 930 static HRESULT WINAPI AC_GetService(IAudioClient *iface, REFIID riid, void **ppv)
 931 {
 932     ACImpl *This = (ACImpl*)iface;
 933     HRESULT hr = S_OK;
 934     TRACE("(%p)->(%s,%p)\n", This, debugstr_guid(riid), ppv);
 935     if (!This->init)
 936         return AUDCLNT_E_NOT_INITIALIZED;
 937     if (!ppv)
 938         return E_POINTER;
 939     *ppv = NULL;
 940
 941     if (IsEqualIID(riid, &IID_IAudioRenderClient)) {
 942         if (This->parent->flow != eRender)
 943             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
 944         if (!This->render)
 945             hr = AudioRenderClient_Create(This, &This->render);
 946         *ppv = This->render;
 947     } else if (IsEqualIID(riid, &IID_IAudioCaptureClient)) {
 948         if (This->parent->flow != eCapture)
 949             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
 950         if (!This->capture)
 951             hr = AudioCaptureClient_Create(This, &This->capture);
 952         *ppv = This->capture;
 953     } else if (IsEqualIID(riid, &IID_IAudioSessionControl)) {
 954         if (!This->session)
 955             hr = AudioSessionControl_Create(This, &This->session);
 956         *ppv = This->session;
 957     } else if (IsEqualIID(riid, &IID_ISimpleAudioVolume)) {
 958         if (!This->svolume)
 959             hr = AudioSimpleVolume_Create(This, &This->svolume);
 960         *ppv = This->svolume;
 961     } else if (IsEqualIID(riid, &IID_IAudioClock)) {
 962         if (!This->clock)
 963             hr = AudioClock_Create(This, &This->clock);
 964         *ppv = This->clock;
 965     }
 966
 967     if (FAILED(hr))
 968         return hr;
 969
 970     if (*ppv) {
 971         IUnknown_AddRef((IUnknown*)*ppv);
 972         return S_OK;
 973     }
 974
 975     FIXME("stub %s\n", debugstr_guid(riid));
 976     return E_NOINTERFACE;
 977 }
 978
 979 static const IAudioClientVtbl ACImpl_Vtbl =
 980 {
 981     AC_QueryInterface,
 982     AC_AddRef,
 983     AC_Release,
 984     AC_Initialize,
 985     AC_GetBufferSize,
 986     AC_GetStreamLatency,
 987     AC_GetCurrentPadding,
 988     AC_IsFormatSupported,
 989     AC_GetMixFormat,
 990     AC_GetDevicePeriod,
 991     AC_Start,
 992     AC_Stop,
 993     AC_Reset,
 994     AC_SetEventHandle,
 995     AC_GetService
 996 };
 997
 998 static HRESULT AudioRenderClient_Create(ACImpl *parent, ACRender **ppv)
 999 {
1000     ACRender *This;
1001
1002     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1003     if (!This)
1004         return E_OUTOFMEMORY;
1005     This->lpVtbl = &ACRender_Vtbl;
1006     This->ref = 0;
1007     This->parent = parent;
1008     return S_OK;
1009 }
1010
1011 static void AudioRenderClient_Destroy(ACRender *This)
1012 {
1013     This->parent->render = NULL;
1014     HeapFree(GetProcessHeap(), 0, This);
1015 }
1016
1017 static HRESULT WINAPI ACR_QueryInterface(IAudioRenderClient *iface, REFIID riid, void **ppv)
1018 {
1019     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1020
1021     if (!ppv)
1022         return E_POINTER;
1023     *ppv = NULL;
1024     if (IsEqualIID(riid, &IID_IUnknown)
1025         || IsEqualIID(riid, &IID_IAudioRenderClient))
1026         *ppv = iface;
1027     if (*ppv) {
1028         IUnknown_AddRef((IUnknown*)*ppv);
1029         return S_OK;
1030     }
1031     WARN("Unknown interface %s\n", debugstr_guid(riid));
1032     return E_NOINTERFACE;
1033 }
1034
1035 static ULONG WINAPI ACR_AddRef(IAudioRenderClient *iface)
1036 {
1037     ACRender *This = (ACRender*)iface;
1038     ULONG ref;
1039     ref = InterlockedIncrement(&This->ref);
1040     TRACE("Refcount now %i\n", ref);
1041     return ref;
1042 }
1043
1044 static ULONG WINAPI ACR_Release(IAudioRenderClient *iface)
1045 {
1046     ACRender *This = (ACRender*)iface;
1047     ULONG ref;
1048     ref = InterlockedDecrement(&This->ref);
1049     TRACE("Refcount now %i\n", ref);
1050     if (!ref)
1051         AudioRenderClient_Destroy(This);
1052     return ref;
1053 }
1054
1055 static HRESULT WINAPI ACR_GetBuffer(IAudioRenderClient *iface, UINT32 frames, BYTE **data)
1056 {
1057     ACRender *This = (ACRender*)iface;
1058     DWORD free, framesize;
1059     TRACE("(%p)->(%u,%p)\n", This, frames, data);
1060
1061     if (!data)
1062         return E_POINTER;
1063     if (!frames)
1064         return S_OK;
1065     *data = NULL;
1066     if (This->parent->locked) {
1067         ERR("Locked\n");
1068         return AUDCLNT_E_OUT_OF_ORDER;
1069     }
1070     AC_GetCurrentPadding((IAudioClient*)This->parent, &free);
1071     if (This->parent->bufsize-free < frames) {
1072         ERR("Too large: %u %u %u\n", This->parent->bufsize, free, frames);
1073         return AUDCLNT_E_BUFFER_TOO_LARGE;
1074     }
1075     EnterCriticalSection(This->parent->crst);
1076     This->parent->locked = frames;
1077     framesize = This->parent->pwfx->nBlockAlign;
1078
1079     /* Exact offset doesn't matter, offset could be 0 forever
1080      * but increasing it is easier to debug */
1081     if (This->parent->ofs + frames > This->parent->bufsize)
1082         This->parent->ofs = 0;
1083     *data = This->parent->buffer + This->parent->ofs * framesize;
1084
1085     LeaveCriticalSection(This->parent->crst);
1086     return S_OK;
1087 }
1088
1089 static HRESULT WINAPI ACR_ReleaseBuffer(IAudioRenderClient *iface, UINT32 written, DWORD flags)
1090 {
1091     ACRender *This = (ACRender*)iface;
1092     BYTE *buf = This->parent->buffer;
1093     DWORD framesize = This->parent->pwfx->nBlockAlign;
1094     DWORD ofs = This->parent->ofs;
1095     DWORD bufsize = This->parent->bufsize;
1096     DWORD locked = This->parent->locked;
1097     DWORD freq = This->parent->pwfx->nSamplesPerSec;
1098     DWORD bpp = This->parent->pwfx->wBitsPerSample;
1099     ALuint albuf;
1100
1101     TRACE("(%p)->(%u,%x)\n", This, written, flags);
1102
1103     if (locked < written)
1104         return AUDCLNT_E_INVALID_SIZE;
1105
1106     if (flags & ~AUDCLNT_BUFFERFLAGS_SILENT)
1107         return E_INVALIDARG;
1108
1109     if (!written) {
1110         if (This->parent->locked)
1111             FIXME("Handled right?\n");
1112         This->parent->locked = 0;
1113         return S_OK;
1114     }
1115
1116     if (!This->parent->locked)
1117         return AUDCLNT_E_OUT_OF_ORDER;
1118
1119     EnterCriticalSection(This->parent->crst);
1120     setALContext(This->parent->parent->ctx);
1121
1122     This->parent->ofs += written;
1123     This->parent->ofs %= bufsize;
1124     This->parent->pad += written;
1125     This->parent->frameswritten += written;
1126
1127     ofs *= framesize;
1128     written *= framesize;
1129     bufsize *= framesize;
1130     locked *= framesize;
1131
1132     if (flags & AUDCLNT_BUFFERFLAGS_SILENT)
1133         memset(buf+ofs, bpp != 8 ? 0 : 128, written);
1134     TRACE("buf: %p, ofs: %x, written %u, freq %u\n", buf, ofs, written, freq);
1135
1136     palGenBuffers(1, &albuf);
1137     palBufferData(albuf, This->parent->format, buf+ofs, written, freq);
1138     palSourceQueueBuffers(This->parent->source, 1, &albuf);
1139     TRACE("Queued %u\n", albuf);
1140
1141     if (This->parent->running) {
1142         ALint state = AL_PLAYING, done = 0, padpart = 0;
1143
1144         palGetSourcei(This->parent->source, AL_BUFFERS_PROCESSED, &done);
1145         palGetSourcei(This->parent->source, AL_BYTE_OFFSET, &padpart);
1146         palGetSourcei(This->parent->source, AL_SOURCE_STATE, &state);
1147         padpart /= framesize;
1148
1149         if (state == AL_STOPPED) {
1150             padpart = This->parent->pad;
1151             /* Buffer might have been processed in the small window
1152              * between first and third call */
1153             palGetSourcei(This->parent->source, AL_BUFFERS_PROCESSED, &done);
1154         }
1155         if (done || This->parent->padpartial != padpart)
1156             This->parent->laststamp = gettime();
1157         This->parent->padpartial = padpart;
1158
1159         while (done--) {
1160             ALint size, bits, chan;
1161             ALuint which;
1162
1163             palSourceUnqueueBuffers(This->parent->source, 1, &which);
1164             palGetBufferi(which, AL_SIZE, &size);
1165             palGetBufferi(which, AL_BITS, &bits);
1166             palGetBufferi(which, AL_CHANNELS, &chan);
1167             size /= bits * chan / 8;
1168             if (size > This->parent->pad) {
1169                 ERR("Overflow!\n");
1170                 size = This->parent->pad;
1171             }
1172             This->parent->pad -= size;
1173             This->parent->padpartial -= size;
1174             TRACE("Unqueued %u\n", which);
1175             palDeleteBuffers(1, &which);
1176         }
1177
1178         if (state != AL_PLAYING) {
1179             ERR("Starting from %x\n", state);
1180             palSourcePlay(This->parent->source);
1181         }
1182         getALError();
1183     }
1184     This->parent->locked = 0;
1185
1186     getALError();
1187     popALContext();
1188     LeaveCriticalSection(This->parent->crst);
1189
1190     return S_OK;
1191 }
1192
1193 static const IAudioRenderClientVtbl ACRender_Vtbl = {
1194     ACR_QueryInterface,
1195     ACR_AddRef,
1196     ACR_Release,
1197     ACR_GetBuffer,
1198     ACR_ReleaseBuffer
1199 };
1200
1201 static HRESULT AudioCaptureClient_Create(ACImpl *parent, ACCapture **ppv)
1202 {
1203     ACCapture *This;
1204     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1205     if (!This)
1206         return E_OUTOFMEMORY;
1207     This->lpVtbl = &ACCapture_Vtbl;
1208     This->ref = 0;
1209     This->parent = parent;
1210     return S_OK;
1211 }
1212
1213 static void AudioCaptureClient_Destroy(ACCapture *This)
1214 {
1215     This->parent->capture = NULL;
1216     HeapFree(GetProcessHeap(), 0, This);
1217 }
1218
1219 static HRESULT WINAPI ACC_QueryInterface(IAudioCaptureClient *iface, REFIID riid, void **ppv)
1220 {
1221     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1222
1223     if (!ppv)
1224         return E_POINTER;
1225     *ppv = NULL;
1226     if (IsEqualIID(riid, &IID_IUnknown)
1227         || IsEqualIID(riid, &IID_IAudioCaptureClient))
1228         *ppv = iface;
1229     if (*ppv) {
1230         IUnknown_AddRef((IUnknown*)*ppv);
1231         return S_OK;
1232     }
1233     WARN("Unknown interface %s\n", debugstr_guid(riid));
1234     return E_NOINTERFACE;
1235 }
1236
1237 static ULONG WINAPI ACC_AddRef(IAudioCaptureClient *iface)
1238 {
1239     ACCapture *This = (ACCapture*)iface;
1240     ULONG ref;
1241     ref = InterlockedIncrement(&This->ref);
1242     TRACE("Refcount now %i\n", ref);
1243     return ref;
1244 }
1245
1246 static ULONG WINAPI ACC_Release(IAudioCaptureClient *iface)
1247 {
1248     ACCapture *This = (ACCapture*)iface;
1249     ULONG ref;
1250     ref = InterlockedDecrement(&This->ref);
1251     TRACE("Refcount now %i\n", ref);
1252     if (!ref)
1253         AudioCaptureClient_Destroy(This);
1254     return ref;
1255 }
1256
1257 static HRESULT WINAPI ACC_GetBuffer(IAudioCaptureClient *iface, BYTE **data, UINT32 *frames, DWORD *flags, UINT64 *devpos, UINT64 *qpcpos)
1258 {
1259     ACCapture *This = (ACCapture*)iface;
1260     HRESULT hr;
1261     DWORD block = This->parent->pwfx->nBlockAlign;
1262     DWORD ofs, bufsize;
1263     TRACE("(%p)->(%p,%p,%p,%p,%p)\n", This, data, frames, flags, devpos, qpcpos);
1264
1265     if (!data)
1266         return E_POINTER;
1267     if (!frames)
1268         return E_POINTER;
1269     if (!flags) {
1270         FIXME("Flags can be null?\n");
1271         return E_POINTER;
1272     }
1273     EnterCriticalSection(This->parent->crst);
1274     hr = AUDCLNT_E_OUT_OF_ORDER;
1275     if (This->parent->locked)
1276         goto out;
1277     IAudioCaptureClient_GetNextPacketSize(iface, frames);
1278     ofs = This->parent->ofs;
1279     bufsize = This->parent->bufsize;
1280     if ( (ofs*block) % This->parent->psize)
1281         ERR("Unaligned offset %u with %u\n", ofs*block, This->parent->psize);
1282     *data = This->parent->buffer + ofs * block;
1283     This->parent->locked = *frames;
1284     if (devpos)
1285         *devpos = This->parent->frameswritten - This->parent->pad;
1286     if (qpcpos)
1287         *qpcpos = This->parent->laststamp;
1288     if (*frames)
1289         hr = S_OK;
1290     else
1291         hr = AUDCLNT_S_BUFFER_EMPTY;
1292 out:
1293     LeaveCriticalSection(This->parent->crst);
1294     TRACE("Returning %08x %i\n", hr, *frames);
1295     return hr;
1296 }
1297
1298 static HRESULT WINAPI ACC_ReleaseBuffer(IAudioCaptureClient *iface, UINT32 written)
1299 {
1300     ACCapture *This = (ACCapture*)iface;
1301     HRESULT hr = S_OK;
1302     EnterCriticalSection(This->parent->crst);
1303     if (!written || written == This->parent->locked) {
1304         This->parent->locked = 0;
1305         This->parent->ofs += written;
1306         This->parent->ofs %= This->parent->bufsize;
1307         This->parent->pad -= written;
1308     } else if (!This->parent->locked)
1309         hr = AUDCLNT_E_OUT_OF_ORDER;
1310     else
1311         hr = AUDCLNT_E_INVALID_SIZE;
1312     LeaveCriticalSection(This->parent->crst);
1313     return hr;
1314 }
1315
1316 static HRESULT WINAPI ACC_GetNextPacketSize(IAudioCaptureClient *iface, UINT32 *frames)
1317 {
1318     ACCapture *This = (ACCapture*)iface;
1319
1320     return AC_GetCurrentPadding((IAudioClient*)This->parent, frames);
1321 }
1322
1323 static const IAudioCaptureClientVtbl ACCapture_Vtbl =
1324 {
1325     ACC_QueryInterface,
1326     ACC_AddRef,
1327     ACC_Release,
1328     ACC_GetBuffer,
1329     ACC_ReleaseBuffer,
1330     ACC_GetNextPacketSize
1331 };
1332
1333 static HRESULT AudioSessionControl_Create(ACImpl *parent, ACSession **ppv)
1334 {
1335     ACSession *This;
1336     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1337     if (!This)
1338         return E_OUTOFMEMORY;
1339     This->lpVtbl = &ACSession_Vtbl;
1340     This->ref = 0;
1341     This->parent = parent;
1342     return S_OK;
1343 }
1344
1345 static void AudioSessionControl_Destroy(ACSession *This)
1346 {
1347     This->parent->session = NULL;
1348     HeapFree(GetProcessHeap(), 0, This);
1349 }
1350
1351 static HRESULT WINAPI ACS_QueryInterface(IAudioSessionControl2 *iface, REFIID riid, void **ppv)
1352 {
1353     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1354
1355     if (!ppv)
1356         return E_POINTER;
1357     *ppv = NULL;
1358     if (IsEqualIID(riid, &IID_IUnknown)
1359         || IsEqualIID(riid, &IID_IAudioSessionControl)
1360         || IsEqualIID(riid, &IID_IAudioSessionControl2))
1361         *ppv = iface;
1362     if (*ppv) {
1363         IUnknown_AddRef((IUnknown*)*ppv);
1364         return S_OK;
1365     }
1366     WARN("Unknown interface %s\n", debugstr_guid(riid));
1367     return E_NOINTERFACE;
1368 }
1369
1370 static ULONG WINAPI ACS_AddRef(IAudioSessionControl2 *iface)
1371 {
1372     ACSession *This = (ACSession*)iface;
1373     ULONG ref;
1374     ref = InterlockedIncrement(&This->ref);
1375     TRACE("Refcount now %i\n", ref);
1376     return ref;
1377 }
1378
1379 static ULONG WINAPI ACS_Release(IAudioSessionControl2 *iface)
1380 {
1381     ACSession *This = (ACSession*)iface;
1382     ULONG ref;
1383     ref = InterlockedDecrement(&This->ref);
1384     TRACE("Refcount now %i\n", ref);
1385     if (!ref)
1386         AudioSessionControl_Destroy(This);
1387     return ref;
1388 }
1389
1390 static HRESULT WINAPI ACS_GetState(IAudioSessionControl2 *iface, AudioSessionState *state)
1391 {
1392     ACSession *This = (ACSession*)iface;
1393     TRACE("(%p)->(%p)\n", This, state);
1394
1395     if (!state)
1396         return E_POINTER;
1397     *state = This->parent->parent->state;
1398     return E_NOTIMPL;
1399 }
1400
1401 static HRESULT WINAPI ACS_GetDisplayName(IAudioSessionControl2 *iface, WCHAR **name)
1402 {
1403     ACSession *This = (ACSession*)iface;
1404     TRACE("(%p)->(%p)\n", This, name);
1405     FIXME("stub\n");
1406     if (name)
1407         *name = NULL;
1408     return E_NOTIMPL;
1409 }
1410
1411 static HRESULT WINAPI ACS_SetDisplayName(IAudioSessionControl2 *iface, const WCHAR *name, const GUID *session)
1412 {
1413     ACSession *This = (ACSession*)iface;
1414     TRACE("(%p)->(%p,%s)\n", This, name, debugstr_guid(session));
1415     FIXME("stub\n");
1416     return E_NOTIMPL;
1417 }
1418
1419 static HRESULT WINAPI ACS_GetIconPath(IAudioSessionControl2 *iface, WCHAR **path)
1420 {
1421     ACSession *This = (ACSession*)iface;
1422     TRACE("(%p)->(%p)\n", This, path);
1423     FIXME("stub\n");
1424     if (path)
1425         *path = NULL;
1426     return E_NOTIMPL;
1427 }
1428
1429 static HRESULT WINAPI ACS_SetIconPath(IAudioSessionControl2 *iface, const WCHAR *path, const GUID *session)
1430 {
1431     ACSession *This = (ACSession*)iface;
1432     TRACE("(%p)->(%p,%s)\n", This, path, debugstr_guid(session));
1433     FIXME("stub\n");
1434     return E_NOTIMPL;
1435 }
1436
1437 static HRESULT WINAPI ACS_GetGroupingParam(IAudioSessionControl2 *iface, GUID *group)
1438 {
1439     ACSession *This = (ACSession*)iface;
1440     TRACE("(%p)->(%p)\n", This, group);
1441     FIXME("stub\n");
1442     if (group)
1443         *group = GUID_NULL;
1444     return E_NOTIMPL;
1445 }
1446
1447 static HRESULT WINAPI ACS_SetGroupingParam(IAudioSessionControl2 *iface, GUID *group, const GUID *session)
1448 {
1449     ACSession *This = (ACSession*)iface;
1450     TRACE("(%p)->(%s,%s)\n", This, debugstr_guid(group), debugstr_guid(session));
1451     FIXME("stub\n");
1452     return E_NOTIMPL;
1453 }
1454
1455 static HRESULT WINAPI ACS_RegisterAudioSessionNotification(IAudioSessionControl2 *iface, IAudioSessionEvents *events)
1456 {
1457     ACSession *This = (ACSession*)iface;
1458     TRACE("(%p)->(%p)\n", This, events);
1459     FIXME("stub\n");
1460     return S_OK;
1461 }
1462
1463 static HRESULT WINAPI ACS_UnregisterAudioSessionNotification(IAudioSessionControl2 *iface, IAudioSessionEvents *events)
1464 {
1465     ACSession *This = (ACSession*)iface;
1466     TRACE("(%p)->(%p)\n", This, events);
1467     FIXME("stub\n");
1468     return S_OK;
1469 }
1470
1471 static HRESULT WINAPI ACS_GetSessionIdentifier(IAudioSessionControl2 *iface, WCHAR **id)
1472 {
1473     ACSession *This = (ACSession*)iface;
1474     TRACE("(%p)->(%p)\n", This, id);
1475     FIXME("stub\n");
1476     if (id)
1477         *id = NULL;
1478     return E_NOTIMPL;
1479 }
1480
1481 static HRESULT WINAPI ACS_GetSessionInstanceIdentifier(IAudioSessionControl2 *iface, WCHAR **id)
1482 {
1483     ACSession *This = (ACSession*)iface;
1484     TRACE("(%p)->(%p)\n", This, id);
1485     FIXME("stub\n");
1486     if (id)
1487         *id = NULL;
1488     return E_NOTIMPL;
1489 }
1490
1491 static HRESULT WINAPI ACS_GetProcessId(IAudioSessionControl2 *iface, DWORD *pid)
1492 {
1493     ACSession *This = (ACSession*)iface;
1494     TRACE("(%p)->(%p)\n", This, pid);
1495
1496     if (!pid)
1497         return E_POINTER;
1498     *pid = GetCurrentProcessId();
1499     return S_OK;
1500 }
1501
1502 static HRESULT WINAPI ACS_IsSystemSoundsSession(IAudioSessionControl2 *iface)
1503 {
1504     ACSession *This = (ACSession*)iface;
1505     TRACE("(%p)\n", This);
1506
1507     return S_FALSE;
1508 }
1509
1510 static HRESULT WINAPI ACS_SetDuckingPreference(IAudioSessionControl2 *iface, BOOL optout)
1511 {
1512     ACSession *This = (ACSession*)iface;
1513     TRACE("(%p)\n", This);
1514
1515     return S_OK;
1516 }
1517
1518 static const IAudioSessionControl2Vtbl ACSession_Vtbl =
1519 {
1520     ACS_QueryInterface,
1521     ACS_AddRef,
1522     ACS_Release,
1523     ACS_GetState,
1524     ACS_GetDisplayName,
1525     ACS_SetDisplayName,
1526     ACS_GetIconPath,
1527     ACS_SetIconPath,
1528     ACS_GetGroupingParam,
1529     ACS_SetGroupingParam,
1530     ACS_RegisterAudioSessionNotification,
1531     ACS_UnregisterAudioSessionNotification,
1532     ACS_GetSessionIdentifier,
1533     ACS_GetSessionInstanceIdentifier,
1534     ACS_GetProcessId,
1535     ACS_IsSystemSoundsSession,
1536     ACS_SetDuckingPreference
1537 };
1538
1539 static HRESULT AudioSimpleVolume_Create(ACImpl *parent, ASVolume **ppv)
1540 {
1541     ASVolume *This;
1542     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1543     if (!This)
1544         return E_OUTOFMEMORY;
1545     This->lpVtbl = &ASVolume_Vtbl;
1546     This->ref = 0;
1547     This->parent = parent;
1548     return S_OK;
1549 }
1550
1551 static void AudioSimpleVolume_Destroy(ASVolume *This)
1552 {
1553     This->parent->svolume = NULL;
1554     HeapFree(GetProcessHeap(), 0, This);
1555 }
1556
1557 static HRESULT WINAPI ASV_QueryInterface(ISimpleAudioVolume *iface, REFIID riid, void **ppv)
1558 {
1559     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1560
1561     if (!ppv)
1562         return E_POINTER;
1563     *ppv = NULL;
1564     if (IsEqualIID(riid, &IID_IUnknown)
1565         || IsEqualIID(riid, &IID_ISimpleAudioVolume))
1566         *ppv = iface;
1567     if (*ppv) {
1568         IUnknown_AddRef((IUnknown*)*ppv);
1569         return S_OK;
1570     }
1571     WARN("Unknown interface %s\n", debugstr_guid(riid));
1572     return E_NOINTERFACE;
1573 }
1574
1575 static ULONG WINAPI ASV_AddRef(ISimpleAudioVolume *iface)
1576 {
1577     ASVolume *This = (ASVolume*)iface;
1578     ULONG ref;
1579     ref = InterlockedIncrement(&This->ref);
1580     TRACE("Refcount now %i\n", ref);
1581     return ref;
1582 }
1583
1584 static ULONG WINAPI ASV_Release(ISimpleAudioVolume *iface)
1585 {
1586     ASVolume *This = (ASVolume*)iface;
1587     ULONG ref;
1588     ref = InterlockedDecrement(&This->ref);
1589     TRACE("Refcount now %i\n", ref);
1590     if (!ref)
1591         AudioSimpleVolume_Destroy(This);
1592     return ref;
1593 }
1594
1595 static HRESULT WINAPI ASV_SetMasterVolume(ISimpleAudioVolume *iface, float level, const GUID *context)
1596 {
1597     ASVolume *This = (ASVolume*)iface;
1598     TRACE("(%p)->(%f,%p)\n", This, level, context);
1599
1600     FIXME("stub\n");
1601     return S_OK;
1602 }
1603
1604 static HRESULT WINAPI ASV_GetMasterVolume(ISimpleAudioVolume *iface, float *level)
1605 {
1606     ASVolume *This = (ASVolume*)iface;
1607     TRACE("(%p)->(%p)\n", This, level);
1608
1609     *level = 1.f;
1610     FIXME("stub\n");
1611     return S_OK;
1612 }
1613
1614 static HRESULT WINAPI ASV_SetMute(ISimpleAudioVolume *iface, BOOL mute, const GUID *context)
1615 {
1616     ASVolume *This = (ASVolume*)iface;
1617     TRACE("(%p)->(%u,%p)\n", This, mute, context);
1618
1619     FIXME("stub\n");
1620     return S_OK;
1621 }
1622
1623 static HRESULT WINAPI ASV_GetMute(ISimpleAudioVolume *iface, BOOL *mute)
1624 {
1625     ASVolume *This = (ASVolume*)iface;
1626     TRACE("(%p)->(%p)\n", This, mute);
1627
1628     *mute = 0;
1629     FIXME("stub\n");
1630     return S_OK;
1631 }
1632
1633 static const ISimpleAudioVolumeVtbl ASVolume_Vtbl  =
1634 {
1635     ASV_QueryInterface,
1636     ASV_AddRef,
1637     ASV_Release,
1638     ASV_SetMasterVolume,
1639     ASV_GetMasterVolume,
1640     ASV_SetMute,
1641     ASV_GetMute
1642 };
1643
1644 static HRESULT AudioClock_Create(ACImpl *parent, AClock **ppv)
1645 {
1646     AClock *This;
1647     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1648     if (!This)
1649         return E_OUTOFMEMORY;
1650     This->lpVtbl = &AClock_Vtbl;
1651     This->lp2Vtbl = &AClock2_Vtbl;
1652     This->ref = 0;
1653     This->parent = parent;
1654     return S_OK;
1655 }
1656
1657 static void AudioClock_Destroy(AClock *This)
1658 {
1659     This->parent->clock = NULL;
1660     HeapFree(GetProcessHeap(), 0, This);
1661 }
1662
1663 static HRESULT WINAPI AClock_QueryInterface(IAudioClock *iface, REFIID riid, void **ppv)
1664 {
1665     AClock *This = (AClock*)iface;
1666     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1667
1668     if (!ppv)
1669         return E_POINTER;
1670     *ppv = NULL;
1671     if (IsEqualIID(riid, &IID_IUnknown)
1672         || IsEqualIID(riid, &IID_IAudioClock))
1673         *ppv = iface;
1674     else if (IsEqualIID(riid, &IID_IAudioClock2))
1675         *ppv = &This->lp2Vtbl;
1676     if (*ppv) {
1677         IUnknown_AddRef((IUnknown*)*ppv);
1678         return S_OK;
1679     }
1680     WARN("Unknown interface %s\n", debugstr_guid(riid));
1681     return E_NOINTERFACE;
1682 }
1683
1684 static ULONG WINAPI AClock_AddRef(IAudioClock *iface)
1685 {
1686     AClock *This = (AClock*)iface;
1687     ULONG ref;
1688     ref = InterlockedIncrement(&This->ref);
1689     TRACE("Refcount now %i\n", ref);
1690     return ref;
1691 }
1692
1693 static ULONG WINAPI AClock_Release(IAudioClock *iface)
1694 {
1695     AClock *This = (AClock*)iface;
1696     ULONG ref;
1697     ref = InterlockedDecrement(&This->ref);
1698     TRACE("Refcount now %i\n", ref);
1699     if (!ref)
1700         AudioClock_Destroy(This);
1701     return ref;
1702 }
1703
1704 static HRESULT WINAPI AClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
1705 {
1706     AClock *This = (AClock*)iface;
1707     TRACE("(%p)->(%p)\n", This, freq);
1708
1709     *freq = (UINT64)This->parent->pwfx->nSamplesPerSec;
1710     return S_OK;
1711 }
1712
1713 static HRESULT WINAPI AClock_GetPosition(IAudioClock *iface, UINT64 *pos, UINT64 *qpctime)
1714 {
1715     AClock *This = (AClock*)iface;
1716     DWORD pad;
1717
1718     TRACE("(%p)->(%p,%p)\n", This, pos, qpctime);
1719
1720     if (!pos)
1721         return E_POINTER;
1722
1723     EnterCriticalSection(This->parent->crst);
1724     AC_GetCurrentPadding((IAudioClient*)This->parent, &pad);
1725     *pos = This->parent->frameswritten - pad;
1726     if (qpctime)
1727         *qpctime = gettime();
1728     LeaveCriticalSection(This->parent->crst);
1729
1730     return S_OK;
1731 }
1732
1733 static HRESULT WINAPI AClock_GetCharacteristics(IAudioClock *iface, DWORD *chars)
1734 {
1735     AClock *This = (AClock*)iface;
1736     TRACE("(%p)->(%p)\n", This, chars);
1737
1738     if (!chars)
1739         return E_POINTER;
1740     *chars = AUDIOCLOCK_CHARACTERISTIC_FIXED_FREQ;
1741     return S_OK;
1742 }
1743
1744 static const IAudioClockVtbl AClock_Vtbl =
1745 {
1746     AClock_QueryInterface,
1747     AClock_AddRef,
1748     AClock_Release,
1749     AClock_GetFrequency,
1750     AClock_GetPosition,
1751     AClock_GetCharacteristics
1752 };
1753
1754 static AClock *get_clock_from_clock2(IAudioClock2 *iface)
1755 {
1756     return (AClock*)((char*)iface - offsetof(AClock,lp2Vtbl));
1757 }
1758
1759 static HRESULT WINAPI AClock2_QueryInterface(IAudioClock2 *iface, REFIID riid, void **ppv)
1760 {
1761     AClock *This = get_clock_from_clock2(iface);
1762     return IUnknown_QueryInterface((IUnknown*)This, riid, ppv);
1763 }
1764
1765 static ULONG WINAPI AClock2_AddRef(IAudioClock2 *iface)
1766 {
1767     AClock *This = get_clock_from_clock2(iface);
1768     return IUnknown_AddRef((IUnknown*)This);
1769 }
1770
1771 static ULONG WINAPI AClock2_Release(IAudioClock2 *iface)
1772 {
1773     AClock *This = get_clock_from_clock2(iface);
1774     return IUnknown_Release((IUnknown*)This);
1775 }
1776
1777 static HRESULT WINAPI AClock2_GetPosition(IAudioClock2 *iface, UINT64 *pos, UINT64 *qpctime)
1778 {
1779     AClock *This = get_clock_from_clock2(iface);
1780     return AClock_GetPosition((IAudioClock*)This, pos, qpctime);
1781 }
1782
1783 static const IAudioClock2Vtbl AClock2_Vtbl =
1784 {
1785     AClock2_QueryInterface,
1786     AClock2_AddRef,
1787     AClock2_Release,
1788     AClock2_GetPosition
1789 };
1790
1791 #endif