git.oblomov.eu Git - wine/blob - 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 COBJMACROS
  21 #include "config.h"
  22
  23 #include <stdarg.h>
  24 #ifdef HAVE_AL_AL_H
  25 #include <AL/al.h>
  26 #include <AL/alc.h>
  27 #elif defined(HAVE_OPENAL_AL_H)
  28 #include <OpenAL/al.h>
  29 #include <OpenAL/alc.h>
  30 #endif
  31
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "winnls.h"
  35 #include "winreg.h"
  36 #include "wine/debug.h"
  37 #include "wine/unicode.h"
  38
  39 #include "ole2.h"
  40 #include "mmdeviceapi.h"
  41 #include "dshow.h"
  42 #include "dsound.h"
  43 #include "audioclient.h"
  44 #include "endpointvolume.h"
  45 #include "audiopolicy.h"
  46
  47 #include "mmdevapi.h"
  48
  49 WINE_DEFAULT_DEBUG_CHANNEL(mmdevapi);
  50
  51 #ifdef HAVE_OPENAL
  52
  53 typedef struct ACRender ACRender;
  54 typedef struct ACCapture ACCapture;
  55 typedef struct ACSession ACSession;
  56 typedef struct ASVolume ASVolume;
  57 typedef struct AClock AClock;
  58
  59 typedef struct ACImpl {
  60     const IAudioClientVtbl *lpVtbl;
  61     LONG ref;
  62
  63     MMDevice *parent;
  64     BOOL init, running;
  65     CRITICAL_SECTION *crst;
  66     HANDLE handle;
  67     DWORD locked, flags, candisconnect;
  68     DWORD bufsize_frames, ofs_frames, periodsize_frames, pad, padpartial;
  69     BYTE *buffer;
  70     WAVEFORMATEX *pwfx;
  71     ALuint source;
  72     INT64 frameswritten;
  73     REFERENCE_TIME laststamp;
  74     HANDLE timer_id;
  75     ALCdevice *dev;
  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 valid_dev(ACImpl *This)
 136 {
 137     if (!This->dev)
 138         return 0;
 139     if (This->parent->flow == eRender && This->dev != This->parent->device)
 140         return 0;
 141     return 1;
 142 }
 143
 144 static int get_format_PCM(WAVEFORMATEX *format)
 145 {
 146     if (format->nChannels > 2) {
 147         FIXME("nChannels > 2 not documented for WAVE_FORMAT_PCM!\n");
 148         return 0;
 149     }
 150
 151     format->cbSize = 0;
 152
 153     if (format->nBlockAlign != format->wBitsPerSample/8*format->nChannels) {
 154         WARN("Invalid nBlockAlign %u, from %u %u\n",
 155              format->nBlockAlign, format->wBitsPerSample, format->nChannels);
 156         return 0;
 157     }
 158
 159     switch (format->wBitsPerSample) {
 160         case 8: {
 161             switch (format->nChannels) {
 162             case 1: return AL_FORMAT_MONO8;
 163             case 2: return AL_FORMAT_STEREO8;
 164             }
 165         }
 166         case 16: {
 167             switch (format->nChannels) {
 168             case 1: return AL_FORMAT_MONO16;
 169             case 2: return AL_FORMAT_STEREO16;
 170             }
 171         }
 172     }
 173
 174     if (!(format->wBitsPerSample % 8))
 175         WARN("Could not get OpenAL format (%d-bit, %d channels)\n",
 176              format->wBitsPerSample, format->nChannels);
 177     return 0;
 178 }
 179
 180 /* Speaker configs */
 181 #define MONO SPEAKER_FRONT_CENTER
 182 #define STEREO (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT)
 183 #define REAR (SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
 184 #define QUAD (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
 185 #define X5DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_LEFT|SPEAKER_BACK_RIGHT)
 186 #define X6DOT1 (SPEAKER_FRONT_LEFT|SPEAKER_FRONT_RIGHT|SPEAKER_FRONT_CENTER|SPEAKER_LOW_FREQUENCY|SPEAKER_BACK_CENTER|SPEAKER_SIDE_LEFT|SPEAKER_SIDE_RIGHT)
 187 #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)
 188
 189 static int get_format_EXT(WAVEFORMATEX *format)
 190 {
 191     WAVEFORMATEXTENSIBLE *wfe;
 192
 193     if(format->cbSize < sizeof(WAVEFORMATEXTENSIBLE)-sizeof(WAVEFORMATEX)) {
 194         WARN("Invalid cbSize specified for WAVE_FORMAT_EXTENSIBLE (%d)\n", format->cbSize);
 195         return 0;
 196     }
 197
 198     wfe = (WAVEFORMATEXTENSIBLE*)format;
 199     wfe->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE)-sizeof(WAVEFORMATEX);
 200     if (wfe->Samples.wValidBitsPerSample &&
 201         wfe->Samples.wValidBitsPerSample != format->wBitsPerSample) {
 202         FIXME("wValidBitsPerSample(%u) != wBitsPerSample(%u) unsupported\n",
 203               wfe->Samples.wValidBitsPerSample, format->wBitsPerSample);
 204         return 0;
 205     }
 206
 207     TRACE("Extensible values:\n"
 208           "    Samples     = %d\n"
 209           "    ChannelMask = 0x%08x\n"
 210           "    SubFormat   = %s\n",
 211           wfe->Samples.wReserved, wfe->dwChannelMask,
 212           debugstr_guid(&wfe->SubFormat));
 213
 214     if (wfe->dwChannelMask != MONO
 215         && wfe->dwChannelMask != STEREO
 216         && !palIsExtensionPresent("AL_EXT_MCFORMATS")) {
 217         /* QUAD PCM might still work, special case */
 218         if (palIsExtensionPresent("AL_LOKI_quadriphonic")
 219             && IsEqualGUID(&wfe->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM)
 220             && wfe->dwChannelMask == QUAD) {
 221             if (format->wBitsPerSample == 16)
 222                 return AL_FORMAT_QUAD16_LOKI;
 223             else if (format->wBitsPerSample == 8)
 224                 return AL_FORMAT_QUAD8_LOKI;
 225         }
 226         WARN("Not all formats available\n");
 227         return 0;
 228     }
 229
 230     if(IsEqualGUID(&wfe->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM)) {
 231         if (format->wBitsPerSample == 8) {
 232             switch (wfe->dwChannelMask) {
 233             case   MONO: return AL_FORMAT_MONO8;
 234             case STEREO: return AL_FORMAT_STEREO8;
 235             case   REAR: return AL_FORMAT_REAR8;
 236             case   QUAD: return AL_FORMAT_QUAD8;
 237             case X5DOT1: return AL_FORMAT_51CHN8;
 238             case X6DOT1: return AL_FORMAT_61CHN8;
 239             case X7DOT1: return AL_FORMAT_71CHN8;
 240             default: break;
 241             }
 242         } else if (format->wBitsPerSample  == 16) {
 243             switch (wfe->dwChannelMask) {
 244             case   MONO: return AL_FORMAT_MONO16;
 245             case STEREO: return AL_FORMAT_STEREO16;
 246             case   REAR: return AL_FORMAT_REAR16;
 247             case   QUAD: return AL_FORMAT_QUAD16;
 248             case X5DOT1: return AL_FORMAT_51CHN16;
 249             case X6DOT1: return AL_FORMAT_61CHN16;
 250             case X7DOT1: return AL_FORMAT_71CHN16;
 251             default: break;
 252             }
 253         }
 254         else if (!(format->wBitsPerSample  % 8))
 255             ERR("Could not get OpenAL PCM format (%d-bit, mask 0x%08x)\n",
 256                 format->wBitsPerSample, wfe->dwChannelMask);
 257         return 0;
 258     }
 259     else if(IsEqualGUID(&wfe->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) {
 260         if (format->wBitsPerSample != 32) {
 261             WARN("Invalid valid bits %u/32\n", format->wBitsPerSample);
 262             return 0;
 263         }
 264         switch (wfe->dwChannelMask) {
 265         case   MONO: return AL_FORMAT_MONO_FLOAT32;
 266         case STEREO: return AL_FORMAT_STEREO_FLOAT32;
 267         case   REAR: return AL_FORMAT_REAR32;
 268         case   QUAD: return AL_FORMAT_QUAD32;
 269         case X5DOT1: return AL_FORMAT_51CHN32;
 270         case X6DOT1: return AL_FORMAT_61CHN32;
 271         case X7DOT1: return AL_FORMAT_71CHN32;
 272         default:
 273             ERR("Could not get OpenAL float format (%d-bit, mask 0x%08x)\n",
 274                 format->wBitsPerSample, wfe->dwChannelMask);
 275             return 0;
 276         }
 277     }
 278     else if (!IsEqualGUID(&wfe->SubFormat, &GUID_NULL))
 279         ERR("Unhandled extensible format: %s\n", debugstr_guid(&wfe->SubFormat));
 280     return 0;
 281 }
 282
 283 static ALint get_format(WAVEFORMATEX *in)
 284 {
 285     int ret = 0;
 286     if (in->wFormatTag == WAVE_FORMAT_PCM)
 287         ret = get_format_PCM(in);
 288     else if (in->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
 289         ret = get_format_EXT(in);
 290     return ret;
 291 }
 292
 293 static REFERENCE_TIME gettime(void) {
 294     LARGE_INTEGER stamp, freq;
 295     QueryPerformanceCounter(&stamp);
 296     QueryPerformanceFrequency(&freq);
 297     return (stamp.QuadPart * (INT64)10000000) / freq.QuadPart;
 298 }
 299
 300 HRESULT AudioClient_Create(MMDevice *parent, IAudioClient **ppv)
 301 {
 302     ACImpl *This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*This));
 303     *ppv = (IAudioClient*)This;
 304     if (!*ppv)
 305         return E_OUTOFMEMORY;
 306     This->crst = &parent->crst;
 307     This->lpVtbl = &ACImpl_Vtbl;
 308     This->ref = 1;
 309     This->parent = parent;
 310     return S_OK;
 311 }
 312
 313 static void AudioClient_Destroy(ACImpl *This)
 314 {
 315     if (This->timer_id)
 316     {
 317         DeleteTimerQueueTimer(NULL, This->timer_id, INVALID_HANDLE_VALUE);
 318         This->timer_id = 0;
 319     }
 320     if (This->render)
 321         AudioRenderClient_Destroy(This->render);
 322     if (This->capture)
 323         AudioCaptureClient_Destroy(This->capture);
 324     if (This->session)
 325         AudioSessionControl_Destroy(This->session);
 326     if (This->svolume)
 327         AudioSimpleVolume_Destroy(This->svolume);
 328     if (This->clock)
 329         AudioClock_Destroy(This->clock);
 330     if (!valid_dev(This))
 331         TRACE("Not destroying device since none exists\n");
 332     else if (This->parent->flow == eRender) {
 333         setALContext(This->parent->ctx);
 334         IAudioClient_Stop((IAudioClient*)This);
 335         IAudioClient_Reset((IAudioClient*)This);
 336         palDeleteSources(1, &This->source);
 337         getALError();
 338         popALContext();
 339     }
 340     else if (This->parent->flow == eCapture)
 341         palcCaptureCloseDevice(This->dev);
 342     HeapFree(GetProcessHeap(), 0, This->pwfx);
 343     HeapFree(GetProcessHeap(), 0, This->buffer);
 344     HeapFree(GetProcessHeap(), 0, This);
 345 }
 346
 347 static void CALLBACK AC_tick(void *data, BOOLEAN fired)
 348 {
 349     ACImpl *This = data;
 350     DWORD pad;
 351
 352     EnterCriticalSection(This->crst);
 353     if (This->running)
 354         IAudioClient_GetCurrentPadding((IAudioClient*)This, &pad);
 355     LeaveCriticalSection(This->crst);
 356 }
 357
 358 /* Open device and set/update internal mixing format based on information
 359  * openal provides us. if the device cannot be opened, assume 48khz
 360  * Guessing the frequency is harmless, since if GetMixFormat fails to open
 361  * the device, then Initialize will likely fail as well
 362  */
 363 static HRESULT AC_OpenRenderAL(ACImpl *This)
 364 {
 365     char alname[MAX_PATH];
 366     MMDevice *cur = This->parent;
 367
 368     alname[sizeof(alname)-1] = 0;
 369     if (cur->device)
 370         return cur->ctx ? S_OK : AUDCLNT_E_SERVICE_NOT_RUNNING;
 371
 372     WideCharToMultiByte(CP_UNIXCP, 0, cur->alname, -1,
 373                         alname, sizeof(alname)/sizeof(*alname)-1, NULL, NULL);
 374     cur->device = palcOpenDevice(alname);
 375     if (!cur->device) {
 376         ALCenum err = palcGetError(NULL);
 377         WARN("Could not open device %s: 0x%04x\n", alname, err);
 378         return AUDCLNT_E_DEVICE_IN_USE;
 379     }
 380     cur->ctx = palcCreateContext(cur->device, NULL);
 381     if (!cur->ctx) {
 382         ALCenum err = palcGetError(cur->device);
 383         ERR("Could not create context: 0x%04x\n", err);
 384         return AUDCLNT_E_SERVICE_NOT_RUNNING;
 385     }
 386     if (!cur->device)
 387         return AUDCLNT_E_DEVICE_IN_USE;
 388     return S_OK;
 389 }
 390
 391 static HRESULT AC_OpenCaptureAL(ACImpl *This)
 392 {
 393     char alname[MAX_PATH];
 394     ALint freq, size_frames;
 395
 396     freq = This->pwfx->nSamplesPerSec;
 397     size_frames = This->bufsize_frames;
 398
 399     alname[sizeof(alname)-1] = 0;
 400     if (This->dev) {
 401         FIXME("Attempting to open device while already open\n");
 402         return S_OK;
 403     }
 404     WideCharToMultiByte(CP_UNIXCP, 0, This->parent->alname, -1,
 405                         alname, sizeof(alname)/sizeof(*alname)-1, NULL, NULL);
 406     This->dev = palcCaptureOpenDevice(alname, freq, This->format, size_frames);
 407     if (!This->dev) {
 408         ALCenum err = palcGetError(NULL);
 409         FIXME("Could not open device %s with buf size %u: 0x%04x\n",
 410               alname, This->bufsize_frames, err);
 411         return AUDCLNT_E_DEVICE_IN_USE;
 412     }
 413     return S_OK;
 414 }
 415
 416 static HRESULT WINAPI AC_QueryInterface(IAudioClient *iface, REFIID riid, void **ppv)
 417 {
 418     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
 419
 420     if (!ppv)
 421         return E_POINTER;
 422     *ppv = NULL;
 423     if (IsEqualIID(riid, &IID_IUnknown)
 424         || IsEqualIID(riid, &IID_IAudioClient))
 425         *ppv = iface;
 426     if (*ppv) {
 427         IUnknown_AddRef((IUnknown*)*ppv);
 428         return S_OK;
 429     }
 430     WARN("Unknown interface %s\n", debugstr_guid(riid));
 431     return E_NOINTERFACE;
 432 }
 433
 434 static ULONG WINAPI AC_AddRef(IAudioClient *iface)
 435 {
 436     ACImpl *This = (ACImpl*)iface;
 437     ULONG ref;
 438     ref = InterlockedIncrement(&This->ref);
 439     TRACE("Refcount now %i\n", ref);
 440     return ref;
 441 }
 442
 443 static ULONG WINAPI AC_Release(IAudioClient *iface)
 444 {
 445     ACImpl *This = (ACImpl*)iface;
 446     ULONG ref;
 447     ref = InterlockedDecrement(&This->ref);
 448     TRACE("Refcount now %i\n", ref);
 449     if (!ref)
 450         AudioClient_Destroy(This);
 451     return ref;
 452 }
 453
 454 static HRESULT WINAPI AC_Initialize(IAudioClient *iface, AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration, REFERENCE_TIME period, const WAVEFORMATEX *pwfx, const GUID *sessionguid)
 455 {
 456     ACImpl *This = (ACImpl*)iface;
 457     HRESULT hr = S_OK;
 458     WAVEFORMATEX *pwfx2;
 459     REFERENCE_TIME time;
 460     DWORD bufsize_bytes;
 461
 462     TRACE("(%p)->(%x,%x,%u,%u,%p,%s)\n", This, mode, flags, (int)duration, (int)period, pwfx, debugstr_guid(sessionguid));
 463     if (This->init)
 464         return AUDCLNT_E_ALREADY_INITIALIZED;
 465     if (mode != AUDCLNT_SHAREMODE_SHARED
 466         && mode != AUDCLNT_SHAREMODE_EXCLUSIVE) {
 467         WARN("Unknown mode %x\n", mode);
 468         return AUDCLNT_E_NOT_INITIALIZED;
 469     }
 470
 471     if (flags & ~(AUDCLNT_STREAMFLAGS_CROSSPROCESS
 472                   |AUDCLNT_STREAMFLAGS_LOOPBACK
 473                   |AUDCLNT_STREAMFLAGS_EVENTCALLBACK
 474                   |AUDCLNT_STREAMFLAGS_NOPERSIST
 475                   |AUDCLNT_STREAMFLAGS_RATEADJUST
 476                   |AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED
 477                   |AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE
 478                   |AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED)) {
 479         WARN("Unknown flags 0x%08x\n", flags);
 480         return E_INVALIDARG;
 481     }
 482     if (flags)
 483         WARN("Flags 0x%08x ignored\n", flags);
 484     if (!pwfx)
 485         return E_POINTER;
 486     if (sessionguid)
 487         WARN("Session guid %s ignored\n", debugstr_guid(sessionguid));
 488
 489     hr = IAudioClient_IsFormatSupported(iface, mode, pwfx, &pwfx2);
 490     CoTaskMemFree(pwfx2);
 491     if (FAILED(hr) || pwfx2) {
 492         WARN("Format not supported, or had to be modified!\n");
 493         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 494     }
 495     EnterCriticalSection(This->crst);
 496     HeapFree(GetProcessHeap(), 0, This->pwfx);
 497     This->pwfx = HeapAlloc(GetProcessHeap(), 0, sizeof(*pwfx) + pwfx->cbSize);
 498     if (!This->pwfx) {
 499         hr = E_OUTOFMEMORY;
 500         goto out;
 501     }
 502     memcpy(This->pwfx, pwfx, sizeof(*pwfx) + pwfx->cbSize);
 503     if (pwfx->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
 504         WAVEFORMATEXTENSIBLE *wfe = (WAVEFORMATEXTENSIBLE *)This->pwfx;
 505         switch (pwfx->nChannels) {
 506             case 1: wfe->dwChannelMask = MONO; break;
 507             case 2: wfe->dwChannelMask = STEREO; break;
 508             case 4: wfe->dwChannelMask = QUAD; break;
 509             case 6: wfe->dwChannelMask = X5DOT1; break;
 510             case 7: wfe->dwChannelMask = X6DOT1; break;
 511             case 8: wfe->dwChannelMask = X7DOT1; break;
 512         default:
 513             ERR("How did we end up with %i channels?\n", pwfx->nChannels);
 514             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 515             goto out;
 516         }
 517     }
 518
 519     hr = IAudioClient_GetDevicePeriod(iface, &time, NULL);
 520     if (FAILED(hr))
 521         goto out;
 522
 523     This->periodsize_frames = (DWORD64)This->pwfx->nSamplesPerSec * time / (DWORD64)10000000;
 524     if (duration > 20000000)
 525         duration = 20000000;
 526
 527     This->bufsize_frames = duration / time * This->periodsize_frames;
 528     if (duration % time)
 529         This->bufsize_frames += This->periodsize_frames;
 530     bufsize_bytes = This->bufsize_frames * pwfx->nBlockAlign;
 531
 532     This->format = get_format(This->pwfx);
 533     if (This->parent->flow == eRender) {
 534         char silence[32];
 535         ALuint buf = 0, towrite;
 536
 537         hr = AC_OpenRenderAL(This);
 538         This->dev = This->parent->device;
 539         if (FAILED(hr))
 540             goto out;
 541
 542         /* Test the returned format */
 543         towrite = sizeof(silence);
 544         towrite -= towrite % This->pwfx->nBlockAlign;
 545         if (This->pwfx->wBitsPerSample != 8)
 546             memset(silence, 0, sizeof(silence));
 547         else
 548             memset(silence, 128, sizeof(silence));
 549         setALContext(This->parent->ctx);
 550         getALError();
 551         palGenBuffers(1, &buf);
 552         palBufferData(buf, This->format, silence, towrite, This->pwfx->nSamplesPerSec);
 553         palDeleteBuffers(1, &buf);
 554         if (palGetError())
 555             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 556         else if (!This->source) {
 557             palGenSources(1, &This->source);
 558             palSourcei(This->source, AL_LOOPING, AL_FALSE);
 559             getALError();
 560         }
 561         popALContext();
 562     }
 563     else
 564         hr = AC_OpenCaptureAL(This);
 565
 566     if (FAILED(hr))
 567         goto out;
 568
 569     This->candisconnect = palcIsExtensionPresent(This->dev, "ALC_EXT_disconnect");
 570     This->buffer = HeapAlloc(GetProcessHeap(), 0, bufsize_bytes);
 571     if (!This->buffer) {
 572         hr = E_OUTOFMEMORY;
 573         goto out;
 574     }
 575     This->flags = flags;
 576     This->handle = NULL;
 577     This->running = FALSE;
 578     This->init = TRUE;
 579 out:
 580     LeaveCriticalSection(This->crst);
 581     return hr;
 582 }
 583
 584 static HRESULT WINAPI AC_GetBufferSize(IAudioClient *iface, UINT32 *frames)
 585 {
 586     ACImpl *This = (ACImpl*)iface;
 587     TRACE("(%p)->(%p)\n", This, frames);
 588     if (!This->init)
 589         return AUDCLNT_E_NOT_INITIALIZED;
 590     if (!frames)
 591         return E_POINTER;
 592     *frames = This->bufsize_frames;
 593     return S_OK;
 594 }
 595
 596 static HRESULT WINAPI AC_GetStreamLatency(IAudioClient *iface, REFERENCE_TIME *latency)
 597 {
 598     ACImpl *This = (ACImpl*)iface;
 599     TRACE("(%p)->(%p)\n", This, latency);
 600
 601     if (!This->init)
 602         return AUDCLNT_E_NOT_INITIALIZED;
 603
 604     if (!latency)
 605         return E_POINTER;
 606
 607     *latency = 50000;
 608
 609     return S_OK;
 610 }
 611
 612 static int disconnected(ACImpl *This)
 613 {
 614     if (!This->candisconnect)
 615         return 0;
 616     if (This->parent->flow == eRender) {
 617         if (This->parent->device) {
 618             ALCint con = 1;
 619             palcGetIntegerv(This->parent->device, ALC_CONNECTED, 1, &con);
 620             palcGetError(This->parent->device);
 621             if (!con) {
 622                 palcCloseDevice(This->parent->device);
 623                 This->parent->device = NULL;
 624                 This->parent->ctx = NULL;
 625                 This->dev = NULL;
 626             }
 627         }
 628
 629         if (!This->parent->device && FAILED(AC_OpenRenderAL(This))) {
 630             This->pad -= This->padpartial;
 631             This->padpartial = 0;
 632             return 1;
 633         }
 634         if (This->parent->device != This->dev) {
 635             WARN("Emptying buffer after newly reconnected!\n");
 636             This->pad -= This->padpartial;
 637             This->padpartial = 0;
 638
 639             This->dev = This->parent->device;
 640             setALContext(This->parent->ctx);
 641             palGenSources(1, &This->source);
 642             palSourcei(This->source, AL_LOOPING, AL_FALSE);
 643             getALError();
 644
 645             if (This->render && !This->locked && This->pad) {
 646                 UINT pad = This->pad;
 647                 BYTE *data;
 648                 This->pad = 0;
 649
 650                 /* Probably will cause sound glitches, who cares? */
 651                 IAudioRenderClient_GetBuffer((IAudioRenderClient *)This->render, pad, &data);
 652                 IAudioRenderClient_ReleaseBuffer((IAudioRenderClient *)This->render, pad, 0);
 653             }
 654             popALContext();
 655         }
 656     } else {
 657         if (This->dev) {
 658             ALCint con = 1;
 659             palcGetIntegerv(This->dev, ALC_CONNECTED, 1, &con);
 660             palcGetError(This->dev);
 661             if (!con) {
 662                 palcCaptureCloseDevice(This->dev);
 663                 This->dev = NULL;
 664             }
 665         }
 666
 667         if (!This->dev) {
 668             if (FAILED(AC_OpenCaptureAL(This)))
 669                 return 1;
 670
 671             WARN("Emptying buffer after newly reconnected!\n");
 672             This->pad = This->ofs_frames = 0;
 673             if (This->running)
 674                 palcCaptureStart(This->dev);
 675         }
 676     }
 677     return 0;
 678 }
 679
 680 static HRESULT WINAPI AC_GetCurrentPadding(IAudioClient *iface, UINT32 *numpad)
 681 {
 682     ACImpl *This = (ACImpl*)iface;
 683     ALint avail = 0;
 684
 685     TRACE("(%p)->(%p)\n", This, numpad);
 686     if (!This->init)
 687         return AUDCLNT_E_NOT_INITIALIZED;
 688     if (!numpad)
 689         return E_POINTER;
 690     EnterCriticalSection(This->crst);
 691     if (disconnected(This)) {
 692         REFERENCE_TIME time = gettime(), period;
 693
 694         WARN("No device found, faking increment\n");
 695         IAudioClient_GetDevicePeriod(iface, &period, NULL);
 696         while (This->running && time - This->laststamp >= period) {
 697             This->laststamp += period;
 698
 699             if (This->parent->flow == eCapture) {
 700                 This->pad += This->periodsize_frames;
 701                 if (This->pad > This->bufsize_frames)
 702                     This->pad = This->bufsize_frames;
 703             } else {
 704                 if (This->pad <= This->periodsize_frames) {
 705                     This->pad = 0;
 706                     break;
 707                 } else
 708                     This->pad -= This->periodsize_frames;
 709             }
 710         }
 711
 712         if (This->parent->flow == eCapture)
 713             *numpad = This->pad >= This->periodsize_frames ? This->periodsize_frames: 0;
 714         else
 715             *numpad = This->pad;
 716     } else if (This->parent->flow == eRender) {
 717         UINT64 played = 0;
 718         ALint state, padpart;
 719         setALContext(This->parent->ctx);
 720
 721         palGetSourcei(This->source, AL_BYTE_OFFSET, &padpart);
 722         palGetSourcei(This->source, AL_SOURCE_STATE, &state);
 723         padpart /= This->pwfx->nBlockAlign;
 724         if (state == AL_STOPPED && This->running)
 725             padpart = This->pad;
 726         if (This->running && This->padpartial != padpart) {
 727             This->padpartial = padpart;
 728             This->laststamp = gettime();
 729 #if 0 /* Manipulative lie */
 730         } else if (This->running) {
 731             ALint size = This->pad - padpart;
 732             if (size > This->periodsize_frames)
 733                 size = This->periodsize_frames;
 734             played = (gettime() - This->laststamp)*8;
 735             played = played * This->pwfx->nSamplesPerSec / 10000000;
 736             if (played > size)
 737                 played = size;
 738 #endif
 739         }
 740         *numpad = This->pad - This->padpartial - played;
 741         if (This->handle && (*numpad + This->periodsize_frames) <= This->bufsize_frames)
 742             SetEvent(This->handle);
 743         getALError();
 744         popALContext();
 745     } else {
 746         DWORD block = This->pwfx->nBlockAlign;
 747         palcGetIntegerv(This->dev, ALC_CAPTURE_SAMPLES, 1, &avail);
 748         if (avail) {
 749             DWORD ofs_frames = This->ofs_frames + This->pad;
 750             BYTE *buf1;
 751             ofs_frames %= This->bufsize_frames;
 752             buf1 = This->buffer + (ofs_frames * block);
 753             This->laststamp = gettime();
 754             if (This->handle)
 755                 SetEvent(This->handle);
 756
 757             if (ofs_frames + avail <= This->bufsize_frames)
 758                 palcCaptureSamples(This->dev, buf1, avail);
 759             else {
 760                 DWORD part1 = This->bufsize_frames - ofs_frames;
 761                 palcCaptureSamples(This->dev, buf1, part1);
 762                 palcCaptureSamples(This->dev, This->buffer, avail - part1);
 763             }
 764             This->pad += avail;
 765             This->frameswritten += avail;
 766             /* Increase ofs if the app forgets to read */
 767             if (This->pad > This->bufsize_frames) {
 768                 DWORD rest;
 769                 WARN("Overflowed! %u frames\n", This->pad - This->bufsize_frames);
 770                 This->ofs_frames += This->pad - This->bufsize_frames;
 771                 rest = This->ofs_frames % This->periodsize_frames;
 772                 if (rest)
 773                     This->ofs_frames += This->periodsize_frames - rest;
 774                 This->ofs_frames %= This->bufsize_frames;
 775                 This->pad = This->bufsize_frames;
 776             }
 777         }
 778         if (This->pad >= This->periodsize_frames)
 779             *numpad = This->periodsize_frames;
 780         else
 781             *numpad = 0;
 782     }
 783     LeaveCriticalSection(This->crst);
 784
 785     TRACE("%u queued\n", *numpad);
 786     return S_OK;
 787 }
 788
 789 static HRESULT WINAPI AC_IsFormatSupported(IAudioClient *iface, AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *pwfx, WAVEFORMATEX **outpwfx)
 790 {
 791     ACImpl *This = (ACImpl*)iface;
 792     WAVEFORMATEX *tmp;
 793     DWORD mask;
 794     DWORD size;
 795     TRACE("(%p)->(%x,%p,%p)\n", This, mode, pwfx, outpwfx);
 796     if (!pwfx)
 797         return E_POINTER;
 798
 799     if (mode == AUDCLNT_SHAREMODE_SHARED && !outpwfx)
 800         return E_POINTER;
 801     if (mode != AUDCLNT_SHAREMODE_SHARED
 802         && mode != AUDCLNT_SHAREMODE_EXCLUSIVE) {
 803         WARN("Unknown mode %x\n", mode);
 804         return E_INVALIDARG;
 805     }
 806
 807     if (pwfx->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
 808         size = sizeof(WAVEFORMATEXTENSIBLE);
 809     else if (pwfx->wFormatTag == WAVE_FORMAT_PCM)
 810         size = sizeof(WAVEFORMATEX);
 811     else
 812         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 813
 814     if (pwfx->nSamplesPerSec < 8000
 815         || pwfx->nSamplesPerSec > 192000)
 816         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 817     if (pwfx->wFormatTag != WAVE_FORMAT_EXTENSIBLE
 818         || !IsEqualIID(&((WAVEFORMATEXTENSIBLE*)pwfx)->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT)) {
 819         if (pwfx->wBitsPerSample > 16)
 820             return AUDCLNT_E_UNSUPPORTED_FORMAT;
 821     }
 822
 823     switch (pwfx->nChannels) {
 824         case 1: mask = MONO; break;
 825         case 2: mask = STEREO; break;
 826         case 4: mask = QUAD; break;
 827         case 6: mask = X5DOT1; break;
 828         case 7: mask = X6DOT1; break;
 829         case 8: mask = X7DOT1; break;
 830         default:
 831             TRACE("Unsupported channel count %i\n", pwfx->nChannels);
 832             return AUDCLNT_E_UNSUPPORTED_FORMAT;
 833     }
 834     tmp = CoTaskMemAlloc(size);
 835     if (outpwfx)
 836         *outpwfx = tmp;
 837     if (!tmp)
 838         return E_OUTOFMEMORY;
 839
 840     memcpy(tmp, pwfx, size);
 841     tmp->nBlockAlign = tmp->nChannels * tmp->wBitsPerSample / 8;
 842     tmp->nAvgBytesPerSec = tmp->nBlockAlign * tmp->nSamplesPerSec;
 843     tmp->cbSize = size - sizeof(WAVEFORMATEX);
 844     if (tmp->wFormatTag == WAVE_FORMAT_EXTENSIBLE) {
 845         WAVEFORMATEXTENSIBLE *ex = (WAVEFORMATEXTENSIBLE*)tmp;
 846
 847         if (ex->Samples.wValidBitsPerSample)
 848             ex->Samples.wValidBitsPerSample = ex->Format.wBitsPerSample;
 849
 850         /* Rear is a special allowed case */
 851         if (ex->dwChannelMask
 852             && !(ex->Format.nChannels == 2 && ex->dwChannelMask == REAR))
 853             ex->dwChannelMask = mask;
 854     }
 855
 856     if (memcmp(pwfx, tmp, size)) {
 857         if (outpwfx)
 858             return S_FALSE;
 859         CoTaskMemFree(tmp);
 860         return AUDCLNT_E_UNSUPPORTED_FORMAT;
 861     }
 862     if (outpwfx)
 863         *outpwfx = NULL;
 864     CoTaskMemFree(tmp);
 865     return S_OK;
 866 }
 867
 868 static HRESULT WINAPI AC_GetMixFormat(IAudioClient *iface, WAVEFORMATEX **pwfx)
 869 {
 870     ACImpl *This = (ACImpl*)iface;
 871     PROPVARIANT pv = { VT_EMPTY };
 872     HRESULT hr = S_OK;
 873
 874     TRACE("(%p)->(%p)\n", This, pwfx);
 875     if (!pwfx)
 876         return E_POINTER;
 877
 878     hr = MMDevice_GetPropValue(&This->parent->devguid, This->parent->flow,
 879                                &PKEY_AudioEngine_DeviceFormat, &pv);
 880     *pwfx = (WAVEFORMATEX*)pv.u.blob.pBlobData;
 881     if (SUCCEEDED(hr) && pv.vt == VT_EMPTY)
 882         return E_FAIL;
 883
 884     TRACE("Returning 0x%08x\n", hr);
 885     return hr;
 886 }
 887
 888 static HRESULT WINAPI AC_GetDevicePeriod(IAudioClient *iface, REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
 889 {
 890     ACImpl *This = (ACImpl*)iface;
 891
 892     TRACE("(%p)->(%p)\n", This, minperiod);
 893     if (!defperiod && !minperiod)
 894         return E_POINTER;
 895
 896     if (minperiod)
 897         *minperiod = 30000;
 898     if (defperiod)
 899         *defperiod = 200000;
 900     return S_OK;
 901 }
 902
 903 static HRESULT WINAPI AC_Start(IAudioClient *iface)
 904 {
 905     ACImpl *This = (ACImpl*)iface;
 906     HRESULT hr;
 907     REFERENCE_TIME refresh;
 908
 909     TRACE("(%p)\n", This);
 910     if (!This->init)
 911         return AUDCLNT_E_NOT_INITIALIZED;
 912     if (This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) {
 913         if (!This->handle)
 914             return AUDCLNT_E_EVENTHANDLE_NOT_SET;
 915         FIXME("Event handles not fully tested\n");
 916     }
 917     EnterCriticalSection(This->crst);
 918     if (This->running) {
 919         hr = AUDCLNT_E_NOT_STOPPED;
 920         goto out;
 921     }
 922     if (!valid_dev(This))
 923         WARN("No valid device\n");
 924     else if (This->parent->flow == eRender) {
 925         setALContext(This->parent->ctx);
 926         palSourcePlay(This->source);
 927         getALError();
 928         popALContext();
 929     }
 930     else
 931         palcCaptureStart(This->dev);
 932
 933     AC_GetDevicePeriod(iface, &refresh, NULL);
 934     if (!This->timer_id && This->handle)
 935         CreateTimerQueueTimer(&This->timer_id, NULL, AC_tick, This,
 936                               refresh / 20000, refresh / 20000,
 937                               WT_EXECUTEINTIMERTHREAD);
 938     /* Set to 0, otherwise risk running the clock backwards
 939      * This will cause AudioClock::GetPosition to return the maximum
 940      * possible value for the current buffer
 941      */
 942     This->laststamp = 0;
 943     This->running = TRUE;
 944     hr = S_OK;
 945 out:
 946     LeaveCriticalSection(This->crst);
 947     return hr;
 948 }
 949
 950 static HRESULT WINAPI AC_Stop(IAudioClient *iface)
 951 {
 952     ACImpl *This = (ACImpl*)iface;
 953     HANDLE timer_id;
 954     TRACE("(%p)\n", This);
 955     if (!This->init)
 956         return AUDCLNT_E_NOT_INITIALIZED;
 957     if (!This->running)
 958         return S_FALSE;
 959     EnterCriticalSection(This->crst);
 960     if (!valid_dev(This))
 961         WARN("No valid device\n");
 962     else if (This->parent->flow == eRender) {
 963         ALint state;
 964         setALContext(This->parent->ctx);
 965         palSourcePause(This->source);
 966         while (1) {
 967             state = AL_STOPPED;
 968             palGetSourcei(This->source, AL_SOURCE_STATE, &state);
 969             if (state != AL_PLAYING)
 970                 break;
 971             Sleep(1);
 972         }
 973         getALError();
 974         popALContext();
 975     }
 976     else
 977         palcCaptureStop(This->dev);
 978     This->running = FALSE;
 979     timer_id = This->timer_id;
 980     This->timer_id = 0;
 981     LeaveCriticalSection(This->crst);
 982     if (timer_id)
 983         DeleteTimerQueueTimer(NULL, timer_id, INVALID_HANDLE_VALUE);
 984     return S_OK;
 985 }
 986
 987 static HRESULT WINAPI AC_Reset(IAudioClient *iface)
 988 {
 989     ACImpl *This = (ACImpl*)iface;
 990     HRESULT hr = S_OK;
 991     TRACE("(%p)\n", This);
 992     if (!This->init)
 993         return AUDCLNT_E_NOT_INITIALIZED;
 994     if (This->running)
 995         return AUDCLNT_E_NOT_STOPPED;
 996     EnterCriticalSection(This->crst);
 997     if (This->locked) {
 998         hr = AUDCLNT_E_BUFFER_OPERATION_PENDING;
 999         goto out;
1000     }
1001     if (!valid_dev(This))
1002         WARN("No valid device\n");
1003     else if (This->parent->flow == eRender) {
1004         ALuint buf;
1005         ALint n = 0;
1006         setALContext(This->parent->ctx);
1007         palSourceStop(This->source);
1008         palGetSourcei(This->source, AL_BUFFERS_PROCESSED, &n);
1009         while (n--) {
1010             palSourceUnqueueBuffers(This->source, 1, &buf);
1011             palDeleteBuffers(1, &buf);
1012         }
1013         getALError();
1014         popALContext();
1015     } else {
1016         ALint avail = 0;
1017         palcGetIntegerv(This->dev, ALC_CAPTURE_SAMPLES, 1, &avail);
1018         if (avail)
1019             palcCaptureSamples(This->dev, This->buffer, avail);
1020     }
1021     This->pad = This->padpartial = 0;
1022     This->ofs_frames = 0;
1023     This->frameswritten = 0;
1024 out:
1025     LeaveCriticalSection(This->crst);
1026     return hr;
1027 }
1028
1029 static HRESULT WINAPI AC_SetEventHandle(IAudioClient *iface, HANDLE handle)
1030 {
1031     ACImpl *This = (ACImpl*)iface;
1032     TRACE("(%p)\n", This);
1033     if (!This->init)
1034         return AUDCLNT_E_NOT_INITIALIZED;
1035     if (!handle)
1036         return E_INVALIDARG;
1037     if (!(This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK))
1038         return AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED;
1039     This->handle = handle;
1040     return S_OK;
1041 }
1042
1043 static HRESULT WINAPI AC_GetService(IAudioClient *iface, REFIID riid, void **ppv)
1044 {
1045     ACImpl *This = (ACImpl*)iface;
1046     HRESULT hr = S_OK;
1047     TRACE("(%p)->(%s,%p)\n", This, debugstr_guid(riid), ppv);
1048     if (!This->init)
1049         return AUDCLNT_E_NOT_INITIALIZED;
1050     if (!ppv)
1051         return E_POINTER;
1052     *ppv = NULL;
1053
1054     if (IsEqualIID(riid, &IID_IAudioRenderClient)) {
1055         if (This->parent->flow != eRender)
1056             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
1057         if (!This->render)
1058             hr = AudioRenderClient_Create(This, &This->render);
1059         *ppv = This->render;
1060     } else if (IsEqualIID(riid, &IID_IAudioCaptureClient)) {
1061         if (This->parent->flow != eCapture)
1062             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
1063         if (!This->capture)
1064             hr = AudioCaptureClient_Create(This, &This->capture);
1065         *ppv = This->capture;
1066     } else if (IsEqualIID(riid, &IID_IAudioSessionControl)) {
1067         if (!This->session)
1068             hr = AudioSessionControl_Create(This, &This->session);
1069         *ppv = This->session;
1070     } else if (IsEqualIID(riid, &IID_ISimpleAudioVolume)) {
1071         if (!This->svolume)
1072             hr = AudioSimpleVolume_Create(This, &This->svolume);
1073         *ppv = This->svolume;
1074     } else if (IsEqualIID(riid, &IID_IAudioClock)) {
1075         if (!This->clock)
1076             hr = AudioClock_Create(This, &This->clock);
1077         *ppv = This->clock;
1078     }
1079
1080     if (FAILED(hr))
1081         return hr;
1082
1083     if (*ppv) {
1084         IUnknown_AddRef((IUnknown*)*ppv);
1085         return S_OK;
1086     }
1087
1088     FIXME("stub %s\n", debugstr_guid(riid));
1089     return E_NOINTERFACE;
1090 }
1091
1092 static const IAudioClientVtbl ACImpl_Vtbl =
1093 {
1094     AC_QueryInterface,
1095     AC_AddRef,
1096     AC_Release,
1097     AC_Initialize,
1098     AC_GetBufferSize,
1099     AC_GetStreamLatency,
1100     AC_GetCurrentPadding,
1101     AC_IsFormatSupported,
1102     AC_GetMixFormat,
1103     AC_GetDevicePeriod,
1104     AC_Start,
1105     AC_Stop,
1106     AC_Reset,
1107     AC_SetEventHandle,
1108     AC_GetService
1109 };
1110
1111 static HRESULT AudioRenderClient_Create(ACImpl *parent, ACRender **ppv)
1112 {
1113     ACRender *This;
1114
1115     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1116     if (!This)
1117         return E_OUTOFMEMORY;
1118     This->lpVtbl = &ACRender_Vtbl;
1119     This->ref = 0;
1120     This->parent = parent;
1121     AC_AddRef((IAudioClient*)This->parent);
1122     return S_OK;
1123 }
1124
1125 static void AudioRenderClient_Destroy(ACRender *This)
1126 {
1127     This->parent->render = NULL;
1128     AC_Release((IAudioClient*)This->parent);
1129     HeapFree(GetProcessHeap(), 0, This);
1130 }
1131
1132 static HRESULT WINAPI ACR_QueryInterface(IAudioRenderClient *iface, REFIID riid, void **ppv)
1133 {
1134     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1135
1136     if (!ppv)
1137         return E_POINTER;
1138     *ppv = NULL;
1139     if (IsEqualIID(riid, &IID_IUnknown)
1140         || IsEqualIID(riid, &IID_IAudioRenderClient))
1141         *ppv = iface;
1142     if (*ppv) {
1143         IUnknown_AddRef((IUnknown*)*ppv);
1144         return S_OK;
1145     }
1146     WARN("Unknown interface %s\n", debugstr_guid(riid));
1147     return E_NOINTERFACE;
1148 }
1149
1150 static ULONG WINAPI ACR_AddRef(IAudioRenderClient *iface)
1151 {
1152     ACRender *This = (ACRender*)iface;
1153     ULONG ref;
1154     ref = InterlockedIncrement(&This->ref);
1155     TRACE("Refcount now %i\n", ref);
1156     return ref;
1157 }
1158
1159 static ULONG WINAPI ACR_Release(IAudioRenderClient *iface)
1160 {
1161     ACRender *This = (ACRender*)iface;
1162     ULONG ref;
1163     ref = InterlockedDecrement(&This->ref);
1164     TRACE("Refcount now %i\n", ref);
1165     if (!ref)
1166         AudioRenderClient_Destroy(This);
1167     return ref;
1168 }
1169
1170 static HRESULT WINAPI ACR_GetBuffer(IAudioRenderClient *iface, UINT32 frames, BYTE **data)
1171 {
1172     ACRender *This = (ACRender*)iface;
1173     DWORD free, framesize;
1174     TRACE("(%p)->(%u,%p)\n", This, frames, data);
1175
1176     if (!data)
1177         return E_POINTER;
1178     if (!frames)
1179         return S_OK;
1180     *data = NULL;
1181     if (This->parent->locked) {
1182         ERR("Locked\n");
1183         return AUDCLNT_E_OUT_OF_ORDER;
1184     }
1185     AC_GetCurrentPadding((IAudioClient*)This->parent, &free);
1186     if (This->parent->bufsize_frames - free < frames) {
1187         ERR("Too large: %u %u %u\n", This->parent->bufsize_frames, free, frames);
1188         return AUDCLNT_E_BUFFER_TOO_LARGE;
1189     }
1190     EnterCriticalSection(This->parent->crst);
1191     This->parent->locked = frames;
1192     framesize = This->parent->pwfx->nBlockAlign;
1193
1194     /* Exact offset doesn't matter, offset could be 0 forever
1195      * but increasing it is easier to debug */
1196     if (This->parent->ofs_frames + frames > This->parent->bufsize_frames)
1197         This->parent->ofs_frames = 0;
1198     *data = This->parent->buffer + This->parent->ofs_frames * framesize;
1199
1200     LeaveCriticalSection(This->parent->crst);
1201     return S_OK;
1202 }
1203
1204 static HRESULT WINAPI ACR_ReleaseBuffer(IAudioRenderClient *iface, UINT32 written_frames, DWORD flags)
1205 {
1206     ACRender *This = (ACRender*)iface;
1207     BYTE *buf = This->parent->buffer;
1208     DWORD framesize = This->parent->pwfx->nBlockAlign;
1209     DWORD ofs_bytes = This->parent->ofs_frames * framesize;
1210     DWORD written_bytes = written_frames * framesize;
1211     DWORD freq = This->parent->pwfx->nSamplesPerSec;
1212     DWORD bpp = This->parent->pwfx->wBitsPerSample;
1213     ALuint albuf;
1214
1215     TRACE("(%p)->(%u,%x)\n", This, written_frames, flags);
1216
1217     if (This->parent->locked < written_frames)
1218         return AUDCLNT_E_INVALID_SIZE;
1219
1220     if (flags & ~AUDCLNT_BUFFERFLAGS_SILENT)
1221         return E_INVALIDARG;
1222
1223     if (!written_frames) {
1224         if (This->parent->locked)
1225             FIXME("Handled right?\n");
1226         This->parent->locked = 0;
1227         return S_OK;
1228     }
1229
1230     if (!This->parent->locked)
1231         return AUDCLNT_E_OUT_OF_ORDER;
1232
1233     EnterCriticalSection(This->parent->crst);
1234
1235     This->parent->ofs_frames += written_frames;
1236     This->parent->ofs_frames %= This->parent->bufsize_frames;
1237     This->parent->pad += written_frames;
1238     This->parent->frameswritten += written_frames;
1239     This->parent->locked = 0;
1240
1241     if (flags & AUDCLNT_BUFFERFLAGS_SILENT)
1242         memset(buf + ofs_bytes, bpp != 8 ? 0 : 128, written_bytes);
1243     TRACE("buf: %p, ofs: %x, written %u, freq %u\n", buf, ofs_bytes, written_bytes, freq);
1244     if (!valid_dev(This->parent))
1245         goto out;
1246
1247     setALContext(This->parent->parent->ctx);
1248     palGenBuffers(1, &albuf);
1249     palBufferData(albuf, This->parent->format, buf + ofs_bytes, written_bytes, freq);
1250     palSourceQueueBuffers(This->parent->source, 1, &albuf);
1251     TRACE("Queued %u\n", albuf);
1252
1253     if (This->parent->running) {
1254         ALint state = AL_PLAYING, done = 0, padpart = 0;
1255
1256         palGetSourcei(This->parent->source, AL_BUFFERS_PROCESSED, &done);
1257         palGetSourcei(This->parent->source, AL_BYTE_OFFSET, &padpart);
1258         palGetSourcei(This->parent->source, AL_SOURCE_STATE, &state);
1259         padpart /= framesize;
1260
1261         if (state == AL_STOPPED) {
1262             padpart = This->parent->pad;
1263             /* Buffer might have been processed in the small window
1264              * between first and third call */
1265             palGetSourcei(This->parent->source, AL_BUFFERS_PROCESSED, &done);
1266         }
1267         if (done || This->parent->padpartial != padpart)
1268             This->parent->laststamp = gettime();
1269         This->parent->padpartial = padpart;
1270
1271         while (done--) {
1272             ALint size, bits, chan;
1273             ALuint which;
1274
1275             palSourceUnqueueBuffers(This->parent->source, 1, &which);
1276             palGetBufferi(which, AL_SIZE, &size);
1277             palGetBufferi(which, AL_BITS, &bits);
1278             palGetBufferi(which, AL_CHANNELS, &chan);
1279             size /= bits * chan / 8;
1280             if (size > This->parent->pad) {
1281                 ERR("Overflow!\n");
1282                 size = This->parent->pad;
1283             }
1284             This->parent->pad -= size;
1285             This->parent->padpartial -= size;
1286             TRACE("Unqueued %u\n", which);
1287             palDeleteBuffers(1, &which);
1288         }
1289
1290         if (state != AL_PLAYING) {
1291             ERR("Starting from %x\n", state);
1292             palSourcePlay(This->parent->source);
1293         }
1294         getALError();
1295     }
1296     getALError();
1297     popALContext();
1298 out:
1299     LeaveCriticalSection(This->parent->crst);
1300
1301     return S_OK;
1302 }
1303
1304 static const IAudioRenderClientVtbl ACRender_Vtbl = {
1305     ACR_QueryInterface,
1306     ACR_AddRef,
1307     ACR_Release,
1308     ACR_GetBuffer,
1309     ACR_ReleaseBuffer
1310 };
1311
1312 static HRESULT AudioCaptureClient_Create(ACImpl *parent, ACCapture **ppv)
1313 {
1314     ACCapture *This;
1315     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1316     if (!This)
1317         return E_OUTOFMEMORY;
1318     This->lpVtbl = &ACCapture_Vtbl;
1319     This->ref = 0;
1320     This->parent = parent;
1321     AC_AddRef((IAudioClient*)This->parent);
1322     return S_OK;
1323 }
1324
1325 static void AudioCaptureClient_Destroy(ACCapture *This)
1326 {
1327     This->parent->capture = NULL;
1328     AC_Release((IAudioClient*)This->parent);
1329     HeapFree(GetProcessHeap(), 0, This);
1330 }
1331
1332 static HRESULT WINAPI ACC_QueryInterface(IAudioCaptureClient *iface, REFIID riid, void **ppv)
1333 {
1334     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1335
1336     if (!ppv)
1337         return E_POINTER;
1338     *ppv = NULL;
1339     if (IsEqualIID(riid, &IID_IUnknown)
1340         || IsEqualIID(riid, &IID_IAudioCaptureClient))
1341         *ppv = iface;
1342     if (*ppv) {
1343         IUnknown_AddRef((IUnknown*)*ppv);
1344         return S_OK;
1345     }
1346     WARN("Unknown interface %s\n", debugstr_guid(riid));
1347     return E_NOINTERFACE;
1348 }
1349
1350 static ULONG WINAPI ACC_AddRef(IAudioCaptureClient *iface)
1351 {
1352     ACCapture *This = (ACCapture*)iface;
1353     ULONG ref;
1354     ref = InterlockedIncrement(&This->ref);
1355     TRACE("Refcount now %i\n", ref);
1356     return ref;
1357 }
1358
1359 static ULONG WINAPI ACC_Release(IAudioCaptureClient *iface)
1360 {
1361     ACCapture *This = (ACCapture*)iface;
1362     ULONG ref;
1363     ref = InterlockedDecrement(&This->ref);
1364     TRACE("Refcount now %i\n", ref);
1365     if (!ref)
1366         AudioCaptureClient_Destroy(This);
1367     return ref;
1368 }
1369
1370 static HRESULT WINAPI ACC_GetBuffer(IAudioCaptureClient *iface, BYTE **data, UINT32 *frames, DWORD *flags, UINT64 *devpos, UINT64 *qpcpos)
1371 {
1372     ACCapture *This = (ACCapture*)iface;
1373     HRESULT hr;
1374     DWORD block = This->parent->pwfx->nBlockAlign;
1375     DWORD ofs;
1376     TRACE("(%p)->(%p,%p,%p,%p,%p)\n", This, data, frames, flags, devpos, qpcpos);
1377
1378     if (!data)
1379         return E_POINTER;
1380     if (!frames)
1381         return E_POINTER;
1382     if (!flags) {
1383         FIXME("Flags can be null?\n");
1384         return E_POINTER;
1385     }
1386     EnterCriticalSection(This->parent->crst);
1387     hr = AUDCLNT_E_OUT_OF_ORDER;
1388     if (This->parent->locked)
1389         goto out;
1390     IAudioCaptureClient_GetNextPacketSize(iface, frames);
1391     ofs = This->parent->ofs_frames;
1392     if ( ofs % This->parent->periodsize_frames)
1393         ERR("Unaligned offset %u with %u\n", ofs, This->parent->periodsize_frames);
1394     *data = This->parent->buffer + ofs * block;
1395     This->parent->locked = *frames;
1396     if (devpos)
1397         *devpos = This->parent->frameswritten - This->parent->pad;
1398     if (qpcpos)
1399         *qpcpos = This->parent->laststamp;
1400     if (*frames)
1401         hr = S_OK;
1402     else
1403         hr = AUDCLNT_S_BUFFER_EMPTY;
1404 out:
1405     LeaveCriticalSection(This->parent->crst);
1406     TRACE("Returning %08x %i\n", hr, *frames);
1407     return hr;
1408 }
1409
1410 static HRESULT WINAPI ACC_ReleaseBuffer(IAudioCaptureClient *iface, UINT32 written)
1411 {
1412     ACCapture *This = (ACCapture*)iface;
1413     HRESULT hr = S_OK;
1414     EnterCriticalSection(This->parent->crst);
1415     if (!written || written == This->parent->locked) {
1416         This->parent->locked = 0;
1417         This->parent->ofs_frames += written;
1418         This->parent->ofs_frames %= This->parent->bufsize_frames;
1419         This->parent->pad -= written;
1420     } else if (!This->parent->locked)
1421         hr = AUDCLNT_E_OUT_OF_ORDER;
1422     else
1423         hr = AUDCLNT_E_INVALID_SIZE;
1424     LeaveCriticalSection(This->parent->crst);
1425     return hr;
1426 }
1427
1428 static HRESULT WINAPI ACC_GetNextPacketSize(IAudioCaptureClient *iface, UINT32 *frames)
1429 {
1430     ACCapture *This = (ACCapture*)iface;
1431
1432     return AC_GetCurrentPadding((IAudioClient*)This->parent, frames);
1433 }
1434
1435 static const IAudioCaptureClientVtbl ACCapture_Vtbl =
1436 {
1437     ACC_QueryInterface,
1438     ACC_AddRef,
1439     ACC_Release,
1440     ACC_GetBuffer,
1441     ACC_ReleaseBuffer,
1442     ACC_GetNextPacketSize
1443 };
1444
1445 static HRESULT AudioSessionControl_Create(ACImpl *parent, ACSession **ppv)
1446 {
1447     ACSession *This;
1448     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1449     if (!This)
1450         return E_OUTOFMEMORY;
1451     This->lpVtbl = &ACSession_Vtbl;
1452     This->ref = 0;
1453     This->parent = parent;
1454     AC_AddRef((IAudioClient*)This->parent);
1455     return S_OK;
1456 }
1457
1458 static void AudioSessionControl_Destroy(ACSession *This)
1459 {
1460     This->parent->session = NULL;
1461     AC_Release((IAudioClient*)This->parent);
1462     HeapFree(GetProcessHeap(), 0, This);
1463 }
1464
1465 static HRESULT WINAPI ACS_QueryInterface(IAudioSessionControl2 *iface, REFIID riid, void **ppv)
1466 {
1467     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1468
1469     if (!ppv)
1470         return E_POINTER;
1471     *ppv = NULL;
1472     if (IsEqualIID(riid, &IID_IUnknown)
1473         || IsEqualIID(riid, &IID_IAudioSessionControl)
1474         || IsEqualIID(riid, &IID_IAudioSessionControl2))
1475         *ppv = iface;
1476     if (*ppv) {
1477         IUnknown_AddRef((IUnknown*)*ppv);
1478         return S_OK;
1479     }
1480     WARN("Unknown interface %s\n", debugstr_guid(riid));
1481     return E_NOINTERFACE;
1482 }
1483
1484 static ULONG WINAPI ACS_AddRef(IAudioSessionControl2 *iface)
1485 {
1486     ACSession *This = (ACSession*)iface;
1487     ULONG ref;
1488     ref = InterlockedIncrement(&This->ref);
1489     TRACE("Refcount now %i\n", ref);
1490     return ref;
1491 }
1492
1493 static ULONG WINAPI ACS_Release(IAudioSessionControl2 *iface)
1494 {
1495     ACSession *This = (ACSession*)iface;
1496     ULONG ref;
1497     ref = InterlockedDecrement(&This->ref);
1498     TRACE("Refcount now %i\n", ref);
1499     if (!ref)
1500         AudioSessionControl_Destroy(This);
1501     return ref;
1502 }
1503
1504 static HRESULT WINAPI ACS_GetState(IAudioSessionControl2 *iface, AudioSessionState *state)
1505 {
1506     ACSession *This = (ACSession*)iface;
1507     TRACE("(%p)->(%p)\n", This, state);
1508
1509     if (!state)
1510         return E_POINTER;
1511     *state = This->parent->parent->state;
1512     return E_NOTIMPL;
1513 }
1514
1515 static HRESULT WINAPI ACS_GetDisplayName(IAudioSessionControl2 *iface, WCHAR **name)
1516 {
1517     ACSession *This = (ACSession*)iface;
1518     TRACE("(%p)->(%p)\n", This, name);
1519     FIXME("stub\n");
1520     if (name)
1521         *name = NULL;
1522     return E_NOTIMPL;
1523 }
1524
1525 static HRESULT WINAPI ACS_SetDisplayName(IAudioSessionControl2 *iface, const WCHAR *name, const GUID *session)
1526 {
1527     ACSession *This = (ACSession*)iface;
1528     TRACE("(%p)->(%p,%s)\n", This, name, debugstr_guid(session));
1529     FIXME("stub\n");
1530     return E_NOTIMPL;
1531 }
1532
1533 static HRESULT WINAPI ACS_GetIconPath(IAudioSessionControl2 *iface, WCHAR **path)
1534 {
1535     ACSession *This = (ACSession*)iface;
1536     TRACE("(%p)->(%p)\n", This, path);
1537     FIXME("stub\n");
1538     if (path)
1539         *path = NULL;
1540     return E_NOTIMPL;
1541 }
1542
1543 static HRESULT WINAPI ACS_SetIconPath(IAudioSessionControl2 *iface, const WCHAR *path, const GUID *session)
1544 {
1545     ACSession *This = (ACSession*)iface;
1546     TRACE("(%p)->(%p,%s)\n", This, path, debugstr_guid(session));
1547     FIXME("stub\n");
1548     return E_NOTIMPL;
1549 }
1550
1551 static HRESULT WINAPI ACS_GetGroupingParam(IAudioSessionControl2 *iface, GUID *group)
1552 {
1553     ACSession *This = (ACSession*)iface;
1554     TRACE("(%p)->(%p)\n", This, group);
1555     FIXME("stub\n");
1556     if (group)
1557         *group = GUID_NULL;
1558     return E_NOTIMPL;
1559 }
1560
1561 static HRESULT WINAPI ACS_SetGroupingParam(IAudioSessionControl2 *iface, GUID *group, const GUID *session)
1562 {
1563     ACSession *This = (ACSession*)iface;
1564     TRACE("(%p)->(%s,%s)\n", This, debugstr_guid(group), debugstr_guid(session));
1565     FIXME("stub\n");
1566     return E_NOTIMPL;
1567 }
1568
1569 static HRESULT WINAPI ACS_RegisterAudioSessionNotification(IAudioSessionControl2 *iface, IAudioSessionEvents *events)
1570 {
1571     ACSession *This = (ACSession*)iface;
1572     TRACE("(%p)->(%p)\n", This, events);
1573     FIXME("stub\n");
1574     return S_OK;
1575 }
1576
1577 static HRESULT WINAPI ACS_UnregisterAudioSessionNotification(IAudioSessionControl2 *iface, IAudioSessionEvents *events)
1578 {
1579     ACSession *This = (ACSession*)iface;
1580     TRACE("(%p)->(%p)\n", This, events);
1581     FIXME("stub\n");
1582     return S_OK;
1583 }
1584
1585 static HRESULT WINAPI ACS_GetSessionIdentifier(IAudioSessionControl2 *iface, WCHAR **id)
1586 {
1587     ACSession *This = (ACSession*)iface;
1588     TRACE("(%p)->(%p)\n", This, id);
1589     FIXME("stub\n");
1590     if (id)
1591         *id = NULL;
1592     return E_NOTIMPL;
1593 }
1594
1595 static HRESULT WINAPI ACS_GetSessionInstanceIdentifier(IAudioSessionControl2 *iface, WCHAR **id)
1596 {
1597     ACSession *This = (ACSession*)iface;
1598     TRACE("(%p)->(%p)\n", This, id);
1599     FIXME("stub\n");
1600     if (id)
1601         *id = NULL;
1602     return E_NOTIMPL;
1603 }
1604
1605 static HRESULT WINAPI ACS_GetProcessId(IAudioSessionControl2 *iface, DWORD *pid)
1606 {
1607     ACSession *This = (ACSession*)iface;
1608     TRACE("(%p)->(%p)\n", This, pid);
1609
1610     if (!pid)
1611         return E_POINTER;
1612     *pid = GetCurrentProcessId();
1613     return S_OK;
1614 }
1615
1616 static HRESULT WINAPI ACS_IsSystemSoundsSession(IAudioSessionControl2 *iface)
1617 {
1618     ACSession *This = (ACSession*)iface;
1619     TRACE("(%p)\n", This);
1620
1621     return S_FALSE;
1622 }
1623
1624 static HRESULT WINAPI ACS_SetDuckingPreference(IAudioSessionControl2 *iface, BOOL optout)
1625 {
1626     ACSession *This = (ACSession*)iface;
1627     TRACE("(%p)\n", This);
1628
1629     return S_OK;
1630 }
1631
1632 static const IAudioSessionControl2Vtbl ACSession_Vtbl =
1633 {
1634     ACS_QueryInterface,
1635     ACS_AddRef,
1636     ACS_Release,
1637     ACS_GetState,
1638     ACS_GetDisplayName,
1639     ACS_SetDisplayName,
1640     ACS_GetIconPath,
1641     ACS_SetIconPath,
1642     ACS_GetGroupingParam,
1643     ACS_SetGroupingParam,
1644     ACS_RegisterAudioSessionNotification,
1645     ACS_UnregisterAudioSessionNotification,
1646     ACS_GetSessionIdentifier,
1647     ACS_GetSessionInstanceIdentifier,
1648     ACS_GetProcessId,
1649     ACS_IsSystemSoundsSession,
1650     ACS_SetDuckingPreference
1651 };
1652
1653 static HRESULT AudioSimpleVolume_Create(ACImpl *parent, ASVolume **ppv)
1654 {
1655     ASVolume *This;
1656     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1657     if (!This)
1658         return E_OUTOFMEMORY;
1659     This->lpVtbl = &ASVolume_Vtbl;
1660     This->ref = 0;
1661     This->parent = parent;
1662     AC_AddRef((IAudioClient*)This->parent);
1663     return S_OK;
1664 }
1665
1666 static void AudioSimpleVolume_Destroy(ASVolume *This)
1667 {
1668     This->parent->svolume = NULL;
1669     AC_Release((IAudioClient*)This->parent);
1670     HeapFree(GetProcessHeap(), 0, This);
1671 }
1672
1673 static HRESULT WINAPI ASV_QueryInterface(ISimpleAudioVolume *iface, REFIID riid, void **ppv)
1674 {
1675     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1676
1677     if (!ppv)
1678         return E_POINTER;
1679     *ppv = NULL;
1680     if (IsEqualIID(riid, &IID_IUnknown)
1681         || IsEqualIID(riid, &IID_ISimpleAudioVolume))
1682         *ppv = iface;
1683     if (*ppv) {
1684         IUnknown_AddRef((IUnknown*)*ppv);
1685         return S_OK;
1686     }
1687     WARN("Unknown interface %s\n", debugstr_guid(riid));
1688     return E_NOINTERFACE;
1689 }
1690
1691 static ULONG WINAPI ASV_AddRef(ISimpleAudioVolume *iface)
1692 {
1693     ASVolume *This = (ASVolume*)iface;
1694     ULONG ref;
1695     ref = InterlockedIncrement(&This->ref);
1696     TRACE("Refcount now %i\n", ref);
1697     return ref;
1698 }
1699
1700 static ULONG WINAPI ASV_Release(ISimpleAudioVolume *iface)
1701 {
1702     ASVolume *This = (ASVolume*)iface;
1703     ULONG ref;
1704     ref = InterlockedDecrement(&This->ref);
1705     TRACE("Refcount now %i\n", ref);
1706     if (!ref)
1707         AudioSimpleVolume_Destroy(This);
1708     return ref;
1709 }
1710
1711 static HRESULT WINAPI ASV_SetMasterVolume(ISimpleAudioVolume *iface, float level, const GUID *context)
1712 {
1713     ASVolume *This = (ASVolume*)iface;
1714     TRACE("(%p)->(%f,%p)\n", This, level, context);
1715
1716     FIXME("stub\n");
1717     return S_OK;
1718 }
1719
1720 static HRESULT WINAPI ASV_GetMasterVolume(ISimpleAudioVolume *iface, float *level)
1721 {
1722     ASVolume *This = (ASVolume*)iface;
1723     TRACE("(%p)->(%p)\n", This, level);
1724
1725     *level = 1.f;
1726     FIXME("stub\n");
1727     return S_OK;
1728 }
1729
1730 static HRESULT WINAPI ASV_SetMute(ISimpleAudioVolume *iface, BOOL mute, const GUID *context)
1731 {
1732     ASVolume *This = (ASVolume*)iface;
1733     TRACE("(%p)->(%u,%p)\n", This, mute, context);
1734
1735     FIXME("stub\n");
1736     return S_OK;
1737 }
1738
1739 static HRESULT WINAPI ASV_GetMute(ISimpleAudioVolume *iface, BOOL *mute)
1740 {
1741     ASVolume *This = (ASVolume*)iface;
1742     TRACE("(%p)->(%p)\n", This, mute);
1743
1744     *mute = 0;
1745     FIXME("stub\n");
1746     return S_OK;
1747 }
1748
1749 static const ISimpleAudioVolumeVtbl ASVolume_Vtbl  =
1750 {
1751     ASV_QueryInterface,
1752     ASV_AddRef,
1753     ASV_Release,
1754     ASV_SetMasterVolume,
1755     ASV_GetMasterVolume,
1756     ASV_SetMute,
1757     ASV_GetMute
1758 };
1759
1760 static HRESULT AudioClock_Create(ACImpl *parent, AClock **ppv)
1761 {
1762     AClock *This;
1763     This = *ppv = HeapAlloc(GetProcessHeap(), 0, sizeof(*This));
1764     if (!This)
1765         return E_OUTOFMEMORY;
1766     This->lpVtbl = &AClock_Vtbl;
1767     This->lp2Vtbl = &AClock2_Vtbl;
1768     This->ref = 0;
1769     This->parent = parent;
1770     AC_AddRef((IAudioClient*)This->parent);
1771     return S_OK;
1772 }
1773
1774 static void AudioClock_Destroy(AClock *This)
1775 {
1776     This->parent->clock = NULL;
1777     AC_Release((IAudioClient*)This->parent);
1778     HeapFree(GetProcessHeap(), 0, This);
1779 }
1780
1781 static HRESULT WINAPI AClock_QueryInterface(IAudioClock *iface, REFIID riid, void **ppv)
1782 {
1783     AClock *This = (AClock*)iface;
1784     TRACE("(%p)->(%s,%p)\n", iface, debugstr_guid(riid), ppv);
1785
1786     if (!ppv)
1787         return E_POINTER;
1788     *ppv = NULL;
1789     if (IsEqualIID(riid, &IID_IUnknown)
1790         || IsEqualIID(riid, &IID_IAudioClock))
1791         *ppv = iface;
1792     else if (IsEqualIID(riid, &IID_IAudioClock2))
1793         *ppv = &This->lp2Vtbl;
1794     if (*ppv) {
1795         IUnknown_AddRef((IUnknown*)*ppv);
1796         return S_OK;
1797     }
1798     WARN("Unknown interface %s\n", debugstr_guid(riid));
1799     return E_NOINTERFACE;
1800 }
1801
1802 static ULONG WINAPI AClock_AddRef(IAudioClock *iface)
1803 {
1804     AClock *This = (AClock*)iface;
1805     ULONG ref;
1806     ref = InterlockedIncrement(&This->ref);
1807     TRACE("Refcount now %i\n", ref);
1808     return ref;
1809 }
1810
1811 static ULONG WINAPI AClock_Release(IAudioClock *iface)
1812 {
1813     AClock *This = (AClock*)iface;
1814     ULONG ref;
1815     ref = InterlockedDecrement(&This->ref);
1816     TRACE("Refcount now %i\n", ref);
1817     if (!ref)
1818         AudioClock_Destroy(This);
1819     return ref;
1820 }
1821
1822 static HRESULT WINAPI AClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
1823 {
1824     AClock *This = (AClock*)iface;
1825     TRACE("(%p)->(%p)\n", This, freq);
1826
1827     *freq = (UINT64)This->parent->pwfx->nSamplesPerSec;
1828     return S_OK;
1829 }
1830
1831 static HRESULT WINAPI AClock_GetPosition(IAudioClock *iface, UINT64 *pos, UINT64 *qpctime)
1832 {
1833     AClock *This = (AClock*)iface;
1834     DWORD pad;
1835
1836     TRACE("(%p)->(%p,%p)\n", This, pos, qpctime);
1837
1838     if (!pos)
1839         return E_POINTER;
1840
1841     EnterCriticalSection(This->parent->crst);
1842     AC_GetCurrentPadding((IAudioClient*)This->parent, &pad);
1843     *pos = This->parent->frameswritten - pad;
1844     if (qpctime)
1845         *qpctime = gettime();
1846     LeaveCriticalSection(This->parent->crst);
1847
1848     return S_OK;
1849 }
1850
1851 static HRESULT WINAPI AClock_GetCharacteristics(IAudioClock *iface, DWORD *chars)
1852 {
1853     AClock *This = (AClock*)iface;
1854     TRACE("(%p)->(%p)\n", This, chars);
1855
1856     if (!chars)
1857         return E_POINTER;
1858     *chars = AUDIOCLOCK_CHARACTERISTIC_FIXED_FREQ;
1859     return S_OK;
1860 }
1861
1862 static const IAudioClockVtbl AClock_Vtbl =
1863 {
1864     AClock_QueryInterface,
1865     AClock_AddRef,
1866     AClock_Release,
1867     AClock_GetFrequency,
1868     AClock_GetPosition,
1869     AClock_GetCharacteristics
1870 };
1871
1872 static AClock *get_clock_from_clock2(IAudioClock2 *iface)
1873 {
1874     return (AClock*)((char*)iface - offsetof(AClock,lp2Vtbl));
1875 }
1876
1877 static HRESULT WINAPI AClock2_QueryInterface(IAudioClock2 *iface, REFIID riid, void **ppv)
1878 {
1879     AClock *This = get_clock_from_clock2(iface);
1880     return IUnknown_QueryInterface((IUnknown*)This, riid, ppv);
1881 }
1882
1883 static ULONG WINAPI AClock2_AddRef(IAudioClock2 *iface)
1884 {
1885     AClock *This = get_clock_from_clock2(iface);
1886     return IUnknown_AddRef((IUnknown*)This);
1887 }
1888
1889 static ULONG WINAPI AClock2_Release(IAudioClock2 *iface)
1890 {
1891     AClock *This = get_clock_from_clock2(iface);
1892     return IUnknown_Release((IUnknown*)This);
1893 }
1894
1895 static HRESULT WINAPI AClock2_GetPosition(IAudioClock2 *iface, UINT64 *pos, UINT64 *qpctime)
1896 {
1897     AClock *This = get_clock_from_clock2(iface);
1898     return AClock_GetPosition((IAudioClock*)This, pos, qpctime);
1899 }
1900
1901 static const IAudioClock2Vtbl AClock2_Vtbl =
1902 {
1903     AClock2_QueryInterface,
1904     AClock2_AddRef,
1905     AClock2_Release,
1906     AClock2_GetPosition
1907 };
1908
1909 #endif