git.oblomov.eu Git - wine/blob - dlls/winealsa.drv/mmdevdrv.c

   1 /*
   2  * Copyright 2010 Maarten Lankhorst for CodeWeavers
   3  * Copyright 2011 Andrew Eikum for CodeWeavers
   4  *
   5  * This library is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This library is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this library; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #define NONAMELESSUNION
  21 #define COBJMACROS
  22 #include "config.h"
  23
  24 #include <stdarg.h>
  25 #include <math.h>
  26
  27 #include "windef.h"
  28 #include "winbase.h"
  29 #include "winnls.h"
  30 #include "winreg.h"
  31 #include "wine/debug.h"
  32 #include "wine/unicode.h"
  33 #include "wine/list.h"
  34
  35 #include "ole2.h"
  36 #include "mmdeviceapi.h"
  37 #include "devpkey.h"
  38 #include "dshow.h"
  39 #include "dsound.h"
  40
  41 #include "initguid.h"
  42 #include "endpointvolume.h"
  43 #include "audioclient.h"
  44 #include "audiopolicy.h"
  45
  46 #include <alsa/asoundlib.h>
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(alsa);
  49 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  50
  51 #define NULL_PTR_ERR MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, RPC_X_NULL_REF_POINTER)
  52
  53 static const REFERENCE_TIME DefaultPeriod = 100000;
  54 static const REFERENCE_TIME MinimumPeriod = 50000;
  55
  56 struct ACImpl;
  57 typedef struct ACImpl ACImpl;
  58
  59 typedef struct _AudioSession {
  60     GUID guid;
  61     struct list clients;
  62
  63     IMMDevice *device;
  64
  65     float master_vol;
  66     UINT32 channel_count;
  67     float *channel_vols;
  68     BOOL mute;
  69
  70     CRITICAL_SECTION lock;
  71
  72     struct list entry;
  73 } AudioSession;
  74
  75 typedef struct _AudioSessionWrapper {
  76     IAudioSessionControl2 IAudioSessionControl2_iface;
  77     IChannelAudioVolume IChannelAudioVolume_iface;
  78     ISimpleAudioVolume ISimpleAudioVolume_iface;
  79
  80     LONG ref;
  81
  82     ACImpl *client;
  83     AudioSession *session;
  84 } AudioSessionWrapper;
  85
  86 struct ACImpl {
  87     IAudioClient IAudioClient_iface;
  88     IAudioRenderClient IAudioRenderClient_iface;
  89     IAudioCaptureClient IAudioCaptureClient_iface;
  90     IAudioClock IAudioClock_iface;
  91     IAudioClock2 IAudioClock2_iface;
  92     IAudioStreamVolume IAudioStreamVolume_iface;
  93
  94     LONG ref;
  95
  96     snd_pcm_t *pcm_handle;
  97     snd_pcm_uframes_t alsa_bufsize_frames;
  98     snd_pcm_hw_params_t *hw_params; /* does not hold state between calls */
  99     snd_pcm_format_t alsa_format;
 100
 101     IMMDevice *parent;
 102
 103     EDataFlow dataflow;
 104     WAVEFORMATEX *fmt;
 105     DWORD flags;
 106     AUDCLNT_SHAREMODE share;
 107     HANDLE event;
 108     float *vols;
 109
 110     BOOL initted, started;
 111     REFERENCE_TIME mmdev_period_rt;
 112     UINT64 written_frames;
 113     UINT32 bufsize_frames, held_frames, tmp_buffer_frames;
 114     UINT32 lcl_offs_frames; /* offs into local_buffer where valid data starts */
 115
 116     HANDLE timer;
 117     BYTE *local_buffer, *tmp_buffer;
 118     int buf_state;
 119
 120     CRITICAL_SECTION lock;
 121
 122     AudioSession *session;
 123     AudioSessionWrapper *session_wrapper;
 124
 125     struct list entry;
 126 };
 127
 128 enum BufferStates {
 129     NOT_LOCKED = 0,
 130     LOCKED_NORMAL, /* public buffer piece is from local_buffer */
 131     LOCKED_WRAPPED /* public buffer piece is wrapped around, in tmp_buffer */
 132 };
 133
 134 typedef struct _SessionMgr {
 135     IAudioSessionManager2 IAudioSessionManager2_iface;
 136
 137     LONG ref;
 138
 139     IMMDevice *device;
 140 } SessionMgr;
 141
 142 static HANDLE g_timer_q;
 143
 144 static CRITICAL_SECTION g_sessions_lock;
 145 static CRITICAL_SECTION_DEBUG g_sessions_lock_debug =
 146 {
 147     0, 0, &g_sessions_lock,
 148     { &g_sessions_lock_debug.ProcessLocksList, &g_sessions_lock_debug.ProcessLocksList },
 149       0, 0, { (DWORD_PTR)(__FILE__ ": g_sessions_lock") }
 150 };
 151 static CRITICAL_SECTION g_sessions_lock = { &g_sessions_lock_debug, -1, 0, 0, 0, 0 };
 152 static struct list g_sessions = LIST_INIT(g_sessions);
 153
 154 static const WCHAR defaultW[] = {'d','e','f','a','u','l','t',0};
 155 static const char defname[] = "default";
 156
 157 static const IAudioClientVtbl AudioClient_Vtbl;
 158 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 159 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 160 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
 161 static const ISimpleAudioVolumeVtbl SimpleAudioVolume_Vtbl;
 162 static const IAudioClockVtbl AudioClock_Vtbl;
 163 static const IAudioClock2Vtbl AudioClock2_Vtbl;
 164 static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl;
 165 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl;
 166 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl;
 167
 168 static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);
 169
 170 static inline ACImpl *impl_from_IAudioClient(IAudioClient *iface)
 171 {
 172     return CONTAINING_RECORD(iface, ACImpl, IAudioClient_iface);
 173 }
 174
 175 static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
 176 {
 177     return CONTAINING_RECORD(iface, ACImpl, IAudioRenderClient_iface);
 178 }
 179
 180 static inline ACImpl *impl_from_IAudioCaptureClient(IAudioCaptureClient *iface)
 181 {
 182     return CONTAINING_RECORD(iface, ACImpl, IAudioCaptureClient_iface);
 183 }
 184
 185 static inline AudioSessionWrapper *impl_from_IAudioSessionControl2(IAudioSessionControl2 *iface)
 186 {
 187     return CONTAINING_RECORD(iface, AudioSessionWrapper, IAudioSessionControl2_iface);
 188 }
 189
 190 static inline AudioSessionWrapper *impl_from_ISimpleAudioVolume(ISimpleAudioVolume *iface)
 191 {
 192     return CONTAINING_RECORD(iface, AudioSessionWrapper, ISimpleAudioVolume_iface);
 193 }
 194
 195 static inline AudioSessionWrapper *impl_from_IChannelAudioVolume(IChannelAudioVolume *iface)
 196 {
 197     return CONTAINING_RECORD(iface, AudioSessionWrapper, IChannelAudioVolume_iface);
 198 }
 199
 200 static inline ACImpl *impl_from_IAudioClock(IAudioClock *iface)
 201 {
 202     return CONTAINING_RECORD(iface, ACImpl, IAudioClock_iface);
 203 }
 204
 205 static inline ACImpl *impl_from_IAudioClock2(IAudioClock2 *iface)
 206 {
 207     return CONTAINING_RECORD(iface, ACImpl, IAudioClock2_iface);
 208 }
 209
 210 static inline ACImpl *impl_from_IAudioStreamVolume(IAudioStreamVolume *iface)
 211 {
 212     return CONTAINING_RECORD(iface, ACImpl, IAudioStreamVolume_iface);
 213 }
 214
 215 static inline SessionMgr *impl_from_IAudioSessionManager2(IAudioSessionManager2 *iface)
 216 {
 217     return CONTAINING_RECORD(iface, SessionMgr, IAudioSessionManager2_iface);
 218 }
 219
 220 BOOL WINAPI DllMain(HINSTANCE dll, DWORD reason, void *reserved)
 221 {
 222     switch (reason)
 223     {
 224     case DLL_PROCESS_ATTACH:
 225         g_timer_q = CreateTimerQueue();
 226         if(!g_timer_q)
 227             return FALSE;
 228         break;
 229
 230     case DLL_PROCESS_DETACH:
 231         DeleteCriticalSection(&g_sessions_lock);
 232         break;
 233     }
 234     return TRUE;
 235 }
 236
 237 /* From <dlls/mmdevapi/mmdevapi.h> */
 238 enum DriverPriority {
 239     Priority_Unavailable = 0,
 240     Priority_Low,
 241     Priority_Neutral,
 242     Priority_Preferred
 243 };
 244
 245 int WINAPI AUDDRV_GetPriority(void)
 246 {
 247     return Priority_Neutral;
 248 }
 249
 250 static BOOL alsa_try_open(const char *devnode, snd_pcm_stream_t stream)
 251 {
 252     snd_pcm_t *handle;
 253     int err;
 254
 255     if((err = snd_pcm_open(&handle, devnode, stream, SND_PCM_NONBLOCK)) < 0){
 256         WARN("The device \"%s\" failed to open: %d (%s).\n",
 257                 devnode, err, snd_strerror(err));
 258         return FALSE;
 259     }
 260
 261     snd_pcm_close(handle);
 262     return TRUE;
 263 }
 264
 265 static HRESULT alsa_get_card_devices(snd_pcm_stream_t stream, WCHAR **ids, char **keys,
 266         UINT *num, snd_ctl_t *ctl, int card, const WCHAR *cardnameW)
 267 {
 268     static const WCHAR dashW[] = {' ','-',' ',0};
 269     int err, device;
 270     snd_pcm_info_t *info;
 271
 272     info = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_info_sizeof());
 273     if(!info)
 274         return E_OUTOFMEMORY;
 275
 276     snd_pcm_info_set_subdevice(info, 0);
 277     snd_pcm_info_set_stream(info, stream);
 278
 279     device = -1;
 280     for(err = snd_ctl_pcm_next_device(ctl, &device); device != -1 && err >= 0;
 281             err = snd_ctl_pcm_next_device(ctl, &device)){
 282         const char *devname;
 283         char devnode[32];
 284
 285         snd_pcm_info_set_device(info, device);
 286
 287         if((err = snd_ctl_pcm_info(ctl, info)) < 0){
 288             if(err == -ENOENT)
 289                 /* This device doesn't have the right stream direction */
 290                 continue;
 291
 292             WARN("Failed to get info for card %d, device %d: %d (%s)\n",
 293                     card, device, err, snd_strerror(err));
 294             continue;
 295         }
 296
 297         sprintf(devnode, "plughw:%d,%d", card, device);
 298         if(!alsa_try_open(devnode, stream))
 299             continue;
 300
 301         if(ids && keys){
 302             DWORD len, cardlen;
 303
 304             devname = snd_pcm_info_get_name(info);
 305             if(!devname){
 306                 WARN("Unable to get device name for card %d, device %d\n", card,
 307                         device);
 308                 continue;
 309             }
 310
 311             cardlen = lstrlenW(cardnameW);
 312             len = MultiByteToWideChar(CP_UNIXCP, 0, devname, -1, NULL, 0);
 313             len += lstrlenW(dashW);
 314             len += cardlen;
 315             ids[*num] = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 316             if(!ids[*num]){
 317                 HeapFree(GetProcessHeap(), 0, info);
 318                 return E_OUTOFMEMORY;
 319             }
 320             memcpy(ids[*num], cardnameW, cardlen * sizeof(WCHAR));
 321             memcpy(ids[*num] + cardlen, dashW, lstrlenW(dashW) * sizeof(WCHAR));
 322             cardlen += lstrlenW(dashW);
 323             MultiByteToWideChar(CP_UNIXCP, 0, devname, -1, ids[*num] + cardlen,
 324                     len - cardlen);
 325
 326             keys[*num] = HeapAlloc(GetProcessHeap(), 0, 32);
 327             if(!keys[*num]){
 328                 HeapFree(GetProcessHeap(), 0, info);
 329                 HeapFree(GetProcessHeap(), 0, ids[*num]);
 330                 return E_OUTOFMEMORY;
 331             }
 332             memcpy(keys[*num], devnode, sizeof(devnode));
 333         }
 334
 335         ++(*num);
 336     }
 337
 338     HeapFree(GetProcessHeap(), 0, info);
 339
 340     if(err != 0)
 341         WARN("Got a failure during device enumeration on card %d: %d (%s)\n",
 342                 card, err, snd_strerror(err));
 343
 344     return S_OK;
 345 }
 346
 347 static HRESULT alsa_enum_devices(EDataFlow flow, WCHAR **ids, char **keys,
 348         UINT *num)
 349 {
 350     snd_pcm_stream_t stream = (flow == eRender ? SND_PCM_STREAM_PLAYBACK :
 351         SND_PCM_STREAM_CAPTURE);
 352     int err, card;
 353
 354     card = -1;
 355     *num = 0;
 356
 357     if(alsa_try_open(defname, stream)){
 358         if(ids && keys){
 359             *ids = HeapAlloc(GetProcessHeap(), 0, sizeof(defaultW));
 360             memcpy(*ids, defaultW, sizeof(defaultW));
 361             *keys = HeapAlloc(GetProcessHeap(), 0, sizeof(defname));
 362             memcpy(*keys, defname, sizeof(defname));
 363         }
 364         ++*num;
 365     }
 366
 367     for(err = snd_card_next(&card); card != -1 && err >= 0;
 368             err = snd_card_next(&card)){
 369         char cardpath[64];
 370         const char *cardname;
 371         WCHAR *cardnameW;
 372         snd_ctl_t *ctl;
 373         DWORD len;
 374
 375         sprintf(cardpath, "hw:%u", card);
 376
 377         if((err = snd_ctl_open(&ctl, cardpath, 0)) < 0){
 378             WARN("Unable to open ctl for ALSA device %s: %d (%s)\n", cardpath,
 379                     err, snd_strerror(err));
 380             continue;
 381         }
 382
 383         if((err = snd_card_get_name(card, (char **)&cardname)) < 0){
 384             WARN("Unable to get card name for ALSA device %s: %d (%s)\n",
 385                     cardpath, err, snd_strerror(err));
 386             /* FIXME: Should be localized */
 387             cardname = "Unknown soundcard";
 388         }
 389
 390         len = MultiByteToWideChar(CP_UNIXCP, 0, cardname, -1, NULL, 0);
 391         cardnameW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 392         if(!cardnameW){
 393             snd_ctl_close(ctl);
 394             return E_OUTOFMEMORY;
 395         }
 396         MultiByteToWideChar(CP_UNIXCP, 0, cardname, -1, cardnameW, len);
 397
 398         alsa_get_card_devices(stream, ids, keys, num, ctl, card, cardnameW);
 399
 400         HeapFree(GetProcessHeap(), 0, cardnameW);
 401
 402         snd_ctl_close(ctl);
 403     }
 404
 405     if(err != 0)
 406         WARN("Got a failure during card enumeration: %d (%s)\n",
 407                 err, snd_strerror(err));
 408
 409     return S_OK;
 410 }
 411
 412 HRESULT WINAPI AUDDRV_GetEndpointIDs(EDataFlow flow, WCHAR ***ids, char ***keys,
 413         UINT *num, UINT *def_index)
 414 {
 415     HRESULT hr;
 416
 417     TRACE("%d %p %p %p %p\n", flow, ids, keys, num, def_index);
 418
 419     hr = alsa_enum_devices(flow, NULL, NULL, num);
 420     if(FAILED(hr))
 421         return hr;
 422
 423     if(*num == 0)
 424     {
 425         *ids = NULL;
 426         *keys = NULL;
 427         return S_OK;
 428     }
 429
 430     *ids = HeapAlloc(GetProcessHeap(), 0, *num * sizeof(WCHAR *));
 431     *keys = HeapAlloc(GetProcessHeap(), 0, *num * sizeof(char *));
 432     if(!*ids || !*keys){
 433         HeapFree(GetProcessHeap(), 0, *ids);
 434         HeapFree(GetProcessHeap(), 0, *keys);
 435         return E_OUTOFMEMORY;
 436     }
 437
 438     *def_index = 0;
 439
 440     hr = alsa_enum_devices(flow, *ids, *keys, num);
 441     if(FAILED(hr)){
 442         int i;
 443         for(i = 0; i < *num; ++i){
 444             HeapFree(GetProcessHeap(), 0, (*ids)[i]);
 445             HeapFree(GetProcessHeap(), 0, (*keys)[i]);
 446         }
 447         HeapFree(GetProcessHeap(), 0, *ids);
 448         HeapFree(GetProcessHeap(), 0, *keys);
 449         return E_OUTOFMEMORY;
 450     }
 451
 452     return S_OK;
 453 }
 454
 455 /* Using the pulse PCM device from alsa-plugins 1.0.24 triggers a bug
 456  * which causes audio to cease playing after a few minutes of playback.
 457  * Setting handle_underrun=1 on pulse-backed ALSA devices seems to work
 458  * around this issue. */
 459 static snd_config_t *make_handle_underrun_config(const char *name)
 460 {
 461     snd_config_t *lconf, *dev_node, *hu_node, *type_node;
 462     char dev_node_name[64];
 463     const char *type_str;
 464     int err;
 465
 466     snd_config_update();
 467
 468     if((err = snd_config_copy(&lconf, snd_config)) < 0){
 469         WARN("snd_config_copy failed: %d (%s)\n", err, snd_strerror(err));
 470         return NULL;
 471     }
 472
 473     sprintf(dev_node_name, "pcm.%s", name);
 474     err = snd_config_search(lconf, dev_node_name, &dev_node);
 475     if(err == -ENOENT){
 476         snd_config_delete(lconf);
 477         return NULL;
 478     }
 479     if(err < 0){
 480         snd_config_delete(lconf);
 481         WARN("snd_config_search failed: %d (%s)\n", err, snd_strerror(err));
 482         return NULL;
 483     }
 484
 485     /* ALSA is extremely fragile. If it runs into a config setting it doesn't
 486      * recognize, it tends to fail or assert. So we only want to inject
 487      * handle_underrun=1 on devices that we know will recognize it. */
 488     err = snd_config_search(dev_node, "type", &type_node);
 489     if(err == -ENOENT){
 490         snd_config_delete(lconf);
 491         return NULL;
 492     }
 493     if(err < 0){
 494         snd_config_delete(lconf);
 495         WARN("snd_config_search failed: %d (%s)\n", err, snd_strerror(err));
 496         return NULL;
 497     }
 498
 499     if((err = snd_config_get_string(type_node, &type_str)) < 0){
 500         snd_config_delete(lconf);
 501         return NULL;
 502     }
 503
 504     if(strcmp(type_str, "pulse") != 0){
 505         snd_config_delete(lconf);
 506         return NULL;
 507     }
 508
 509     err = snd_config_search(dev_node, "handle_underrun", &hu_node);
 510     if(err >= 0){
 511         /* user already has an explicit handle_underrun setting, so don't
 512          * use a local config */
 513         snd_config_delete(lconf);
 514         return NULL;
 515     }
 516     if(err != -ENOENT){
 517         snd_config_delete(lconf);
 518         WARN("snd_config_search failed: %d (%s)\n", err, snd_strerror(err));
 519         return NULL;
 520     }
 521
 522     if((err = snd_config_imake_integer(&hu_node, "handle_underrun", 1)) < 0){
 523         snd_config_delete(lconf);
 524         WARN("snd_config_imake_integer failed: %d (%s)\n", err,
 525                 snd_strerror(err));
 526         return NULL;
 527     }
 528
 529     if((err = snd_config_add(dev_node, hu_node)) < 0){
 530         snd_config_delete(lconf);
 531         WARN("snd_config_add failed: %d (%s)\n", err, snd_strerror(err));
 532         return NULL;
 533     }
 534
 535     return lconf;
 536 }
 537
 538 HRESULT WINAPI AUDDRV_GetAudioEndpoint(const char *key, IMMDevice *dev,
 539         EDataFlow dataflow, IAudioClient **out)
 540 {
 541     ACImpl *This;
 542     int err;
 543     snd_pcm_stream_t stream;
 544     snd_config_t *lconf;
 545     static int handle_underrun = 1;
 546
 547     TRACE("\"%s\" %p %d %p\n", key, dev, dataflow, out);
 548
 549     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ACImpl));
 550     if(!This)
 551         return E_OUTOFMEMORY;
 552
 553     This->IAudioClient_iface.lpVtbl = &AudioClient_Vtbl;
 554     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
 555     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
 556     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
 557     This->IAudioClock2_iface.lpVtbl = &AudioClock2_Vtbl;
 558     This->IAudioStreamVolume_iface.lpVtbl = &AudioStreamVolume_Vtbl;
 559
 560     if(dataflow == eRender)
 561         stream = SND_PCM_STREAM_PLAYBACK;
 562     else if(dataflow == eCapture)
 563         stream = SND_PCM_STREAM_CAPTURE;
 564     else{
 565         HeapFree(GetProcessHeap(), 0, This);
 566         return E_UNEXPECTED;
 567     }
 568
 569     This->dataflow = dataflow;
 570     if(handle_underrun && ((lconf = make_handle_underrun_config(key)))){
 571         err = snd_pcm_open_lconf(&This->pcm_handle, key, stream, SND_PCM_NONBLOCK, lconf);
 572         TRACE("Opening PCM device \"%s\" with handle_underrun: %d\n", key, err);
 573         snd_config_delete(lconf);
 574         /* Pulse <= 2010 returns EINVAL, it does not know handle_underrun. */
 575         if(err == -EINVAL){
 576             ERR_(winediag)("PulseAudio \"%s\" %d without handle_underrun. Audio may hang."
 577                            " Please upgrade to alsa_plugins >= 1.0.24\n", key, err);
 578             handle_underrun = 0;
 579         }
 580     }else
 581         err = -EINVAL;
 582     if(err == -EINVAL){
 583         err = snd_pcm_open(&This->pcm_handle, key, stream, SND_PCM_NONBLOCK);
 584     }
 585     if(err < 0){
 586         HeapFree(GetProcessHeap(), 0, This);
 587         WARN("Unable to open PCM \"%s\": %d (%s)\n", key, err, snd_strerror(err));
 588         return E_FAIL;
 589     }
 590
 591     This->hw_params = HeapAlloc(GetProcessHeap(), 0,
 592             snd_pcm_hw_params_sizeof());
 593     if(!This->hw_params){
 594         snd_pcm_close(This->pcm_handle);
 595         HeapFree(GetProcessHeap(), 0, This);
 596         return E_OUTOFMEMORY;
 597     }
 598
 599     InitializeCriticalSection(&This->lock);
 600     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ACImpl.lock");
 601
 602     This->parent = dev;
 603     IMMDevice_AddRef(This->parent);
 604
 605     *out = &This->IAudioClient_iface;
 606     IAudioClient_AddRef(&This->IAudioClient_iface);
 607
 608     return S_OK;
 609 }
 610
 611 static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient *iface,
 612         REFIID riid, void **ppv)
 613 {
 614     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 615
 616     if(!ppv)
 617         return E_POINTER;
 618     *ppv = NULL;
 619     if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClient))
 620         *ppv = iface;
 621     if(*ppv){
 622         IUnknown_AddRef((IUnknown*)*ppv);
 623         return S_OK;
 624     }
 625     WARN("Unknown interface %s\n", debugstr_guid(riid));
 626     return E_NOINTERFACE;
 627 }
 628
 629 static ULONG WINAPI AudioClient_AddRef(IAudioClient *iface)
 630 {
 631     ACImpl *This = impl_from_IAudioClient(iface);
 632     ULONG ref;
 633     ref = InterlockedIncrement(&This->ref);
 634     TRACE("(%p) Refcount now %u\n", This, ref);
 635     return ref;
 636 }
 637
 638 static ULONG WINAPI AudioClient_Release(IAudioClient *iface)
 639 {
 640     ACImpl *This = impl_from_IAudioClient(iface);
 641     ULONG ref;
 642     ref = InterlockedDecrement(&This->ref);
 643     TRACE("(%p) Refcount now %u\n", This, ref);
 644     if(!ref){
 645         IAudioClient_Stop(iface);
 646         IMMDevice_Release(This->parent);
 647         This->lock.DebugInfo->Spare[0] = 0;
 648         DeleteCriticalSection(&This->lock);
 649         snd_pcm_drop(This->pcm_handle);
 650         snd_pcm_close(This->pcm_handle);
 651         if(This->initted){
 652             EnterCriticalSection(&g_sessions_lock);
 653             list_remove(&This->entry);
 654             LeaveCriticalSection(&g_sessions_lock);
 655         }
 656         HeapFree(GetProcessHeap(), 0, This->vols);
 657         HeapFree(GetProcessHeap(), 0, This->local_buffer);
 658         HeapFree(GetProcessHeap(), 0, This->tmp_buffer);
 659         HeapFree(GetProcessHeap(), 0, This->hw_params);
 660         CoTaskMemFree(This->fmt);
 661         HeapFree(GetProcessHeap(), 0, This);
 662     }
 663     return ref;
 664 }
 665
 666 static void dump_fmt(const WAVEFORMATEX *fmt)
 667 {
 668     TRACE("wFormatTag: 0x%x (", fmt->wFormatTag);
 669     switch(fmt->wFormatTag){
 670     case WAVE_FORMAT_PCM:
 671         TRACE("WAVE_FORMAT_PCM");
 672         break;
 673     case WAVE_FORMAT_IEEE_FLOAT:
 674         TRACE("WAVE_FORMAT_IEEE_FLOAT");
 675         break;
 676     case WAVE_FORMAT_EXTENSIBLE:
 677         TRACE("WAVE_FORMAT_EXTENSIBLE");
 678         break;
 679     default:
 680         TRACE("Unknown");
 681         break;
 682     }
 683     TRACE(")\n");
 684
 685     TRACE("nChannels: %u\n", fmt->nChannels);
 686     TRACE("nSamplesPerSec: %u\n", fmt->nSamplesPerSec);
 687     TRACE("nAvgBytesPerSec: %u\n", fmt->nAvgBytesPerSec);
 688     TRACE("nBlockAlign: %u\n", fmt->nBlockAlign);
 689     TRACE("wBitsPerSample: %u\n", fmt->wBitsPerSample);
 690     TRACE("cbSize: %u\n", fmt->cbSize);
 691
 692     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
 693         WAVEFORMATEXTENSIBLE *fmtex = (void*)fmt;
 694         TRACE("dwChannelMask: %08x\n", fmtex->dwChannelMask);
 695         TRACE("Samples: %04x\n", fmtex->Samples.wReserved);
 696         TRACE("SubFormat: %s\n", wine_dbgstr_guid(&fmtex->SubFormat));
 697     }
 698 }
 699
 700 static WAVEFORMATEX *clone_format(const WAVEFORMATEX *fmt)
 701 {
 702     WAVEFORMATEX *ret;
 703     size_t size;
 704
 705     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
 706         size = sizeof(WAVEFORMATEXTENSIBLE);
 707     else
 708         size = sizeof(WAVEFORMATEX);
 709
 710     ret = CoTaskMemAlloc(size);
 711     if(!ret)
 712         return NULL;
 713
 714     memcpy(ret, fmt, size);
 715
 716     ret->cbSize = size - sizeof(WAVEFORMATEX);
 717
 718     return ret;
 719 }
 720
 721 static void session_init_vols(AudioSession *session, UINT channels)
 722 {
 723     if(session->channel_count < channels){
 724         UINT i;
 725
 726         if(session->channel_vols)
 727             session->channel_vols = HeapReAlloc(GetProcessHeap(), 0,
 728                     session->channel_vols, sizeof(float) * channels);
 729         else
 730             session->channel_vols = HeapAlloc(GetProcessHeap(), 0,
 731                     sizeof(float) * channels);
 732         if(!session->channel_vols)
 733             return;
 734
 735         for(i = session->channel_count; i < channels; ++i)
 736             session->channel_vols[i] = 1.f;
 737
 738         session->channel_count = channels;
 739     }
 740 }
 741
 742 static AudioSession *create_session(const GUID *guid, IMMDevice *device,
 743         UINT num_channels)
 744 {
 745     AudioSession *ret;
 746
 747     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(AudioSession));
 748     if(!ret)
 749         return NULL;
 750
 751     memcpy(&ret->guid, guid, sizeof(GUID));
 752
 753     ret->device = device;
 754
 755     list_init(&ret->clients);
 756
 757     list_add_head(&g_sessions, &ret->entry);
 758
 759     InitializeCriticalSection(&ret->lock);
 760     ret->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": AudioSession.lock");
 761
 762     session_init_vols(ret, num_channels);
 763
 764     ret->master_vol = 1.f;
 765
 766     return ret;
 767 }
 768
 769 /* if channels == 0, then this will return or create a session with
 770  * matching dataflow and GUID. otherwise, channels must also match */
 771 static HRESULT get_audio_session(const GUID *sessionguid,
 772         IMMDevice *device, UINT channels, AudioSession **out)
 773 {
 774     AudioSession *session;
 775
 776     if(!sessionguid || IsEqualGUID(sessionguid, &GUID_NULL)){
 777         *out = create_session(&GUID_NULL, device, channels);
 778         if(!*out)
 779             return E_OUTOFMEMORY;
 780
 781         return S_OK;
 782     }
 783
 784     *out = NULL;
 785     LIST_FOR_EACH_ENTRY(session, &g_sessions, AudioSession, entry){
 786         if(session->device == device &&
 787                 IsEqualGUID(sessionguid, &session->guid)){
 788             session_init_vols(session, channels);
 789             *out = session;
 790             break;
 791         }
 792     }
 793
 794     if(!*out){
 795         *out = create_session(sessionguid, device, channels);
 796         if(!*out)
 797             return E_OUTOFMEMORY;
 798     }
 799
 800     return S_OK;
 801 }
 802
 803 static HRESULT WINAPI AudioClient_Initialize(IAudioClient *iface,
 804         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
 805         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
 806         const GUID *sessionguid)
 807 {
 808     ACImpl *This = impl_from_IAudioClient(iface);
 809     snd_pcm_sw_params_t *sw_params = NULL;
 810     snd_pcm_format_t format;
 811     snd_pcm_uframes_t alsa_period_frames;
 812     const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)fmt;
 813     unsigned int rate, mmdev_period_frames, alsa_period_us;
 814     int err, i;
 815     HRESULT hr = S_OK;
 816
 817     TRACE("(%p)->(%x, %x, %s, %s, %p, %s)\n", This, mode, flags,
 818           wine_dbgstr_longlong(duration), wine_dbgstr_longlong(period), fmt, debugstr_guid(sessionguid));
 819
 820     if(!fmt)
 821         return E_POINTER;
 822
 823     if(mode != AUDCLNT_SHAREMODE_SHARED && mode != AUDCLNT_SHAREMODE_EXCLUSIVE)
 824         return AUDCLNT_E_NOT_INITIALIZED;
 825
 826     if(flags & ~(AUDCLNT_STREAMFLAGS_CROSSPROCESS |
 827                 AUDCLNT_STREAMFLAGS_LOOPBACK |
 828                 AUDCLNT_STREAMFLAGS_EVENTCALLBACK |
 829                 AUDCLNT_STREAMFLAGS_NOPERSIST |
 830                 AUDCLNT_STREAMFLAGS_RATEADJUST |
 831                 AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED |
 832                 AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE |
 833                 AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED)){
 834         TRACE("Unknown flags: %08x\n", flags);
 835         return E_INVALIDARG;
 836     }
 837
 838     if(mode == AUDCLNT_SHAREMODE_EXCLUSIVE && flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK){
 839         FIXME("EXCLUSIVE mode with EVENTCALLBACK\n");
 840         return AUDCLNT_E_DEVICE_IN_USE;
 841     }
 842
 843     if(!duration)
 844         duration = 300000; /* 0.03s */
 845
 846     EnterCriticalSection(&This->lock);
 847
 848     if(This->initted){
 849         LeaveCriticalSection(&This->lock);
 850         return AUDCLNT_E_ALREADY_INITIALIZED;
 851     }
 852
 853     dump_fmt(fmt);
 854
 855     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
 856         WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
 857         hr = E_FAIL;
 858         goto exit;
 859     }
 860
 861     if((err = snd_pcm_hw_params_set_access(This->pcm_handle, This->hw_params,
 862                 SND_PCM_ACCESS_RW_INTERLEAVED)) < 0){
 863         WARN("Unable to set access: %d (%s)\n", err, snd_strerror(err));
 864         hr = E_FAIL;
 865         goto exit;
 866     }
 867
 868     if(fmt->wFormatTag == WAVE_FORMAT_PCM ||
 869             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
 870              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))){
 871         if(fmt->wBitsPerSample == 8)
 872             format = SND_PCM_FORMAT_U8;
 873         else if(fmt->wBitsPerSample == 16)
 874             format = SND_PCM_FORMAT_S16_LE;
 875         else if(fmt->wBitsPerSample == 24)
 876             format = SND_PCM_FORMAT_S24_3LE;
 877         else if(fmt->wBitsPerSample == 32)
 878             format = SND_PCM_FORMAT_S32_LE;
 879         else{
 880             WARN("Unsupported bit depth: %u\n", fmt->wBitsPerSample);
 881             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 882             goto exit;
 883         }
 884     }else if(fmt->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
 885             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
 886              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))){
 887         if(fmt->wBitsPerSample == 32)
 888             format = SND_PCM_FORMAT_FLOAT_LE;
 889         else if(fmt->wBitsPerSample == 64)
 890             format = SND_PCM_FORMAT_FLOAT64_LE;
 891         else{
 892             WARN("Unsupported float size: %u\n", fmt->wBitsPerSample);
 893             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 894             goto exit;
 895         }
 896     }else{
 897         WARN("Unknown wave format: %04x\n", fmt->wFormatTag);
 898         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 899         goto exit;
 900     }
 901
 902     if((err = snd_pcm_hw_params_set_format(This->pcm_handle, This->hw_params,
 903                 format)) < 0){
 904         WARN("Unable to set ALSA format to %u: %d (%s)\n", format, err,
 905                 snd_strerror(err));
 906         hr = E_FAIL;
 907         goto exit;
 908     }
 909
 910     This->alsa_format = format;
 911
 912     rate = fmt->nSamplesPerSec;
 913     if((err = snd_pcm_hw_params_set_rate_near(This->pcm_handle, This->hw_params,
 914                 &rate, NULL)) < 0){
 915         WARN("Unable to set rate to %u: %d (%s)\n", rate, err,
 916                 snd_strerror(err));
 917         hr = E_FAIL;
 918         goto exit;
 919     }
 920
 921     if((err = snd_pcm_hw_params_set_channels(This->pcm_handle, This->hw_params,
 922                 fmt->nChannels)) < 0){
 923         WARN("Unable to set channels to %u: %d (%s)\n", fmt->nChannels, err,
 924                 snd_strerror(err));
 925         hr = E_FAIL;
 926         goto exit;
 927     }
 928
 929     alsa_period_us = duration / 100; /* duration / 10 converted to us */
 930     if((err = snd_pcm_hw_params_set_period_time_near(This->pcm_handle,
 931                 This->hw_params, &alsa_period_us, NULL)) < 0){
 932         WARN("Unable to set period time near %u: %d (%s)\n", alsa_period_us,
 933                 err, snd_strerror(err));
 934         hr = E_FAIL;
 935         goto exit;
 936     }
 937
 938     if((err = snd_pcm_hw_params(This->pcm_handle, This->hw_params)) < 0){
 939         WARN("Unable to set hw params: %d (%s)\n", err, snd_strerror(err));
 940         hr = E_FAIL;
 941         goto exit;
 942     }
 943
 944     if((err = snd_pcm_hw_params_current(This->pcm_handle, This->hw_params)) < 0){
 945         WARN("Unable to get current hw params: %d (%s)\n", err, snd_strerror(err));
 946         hr = E_FAIL;
 947         goto exit;
 948     }
 949
 950     if((err = snd_pcm_hw_params_get_period_size(This->hw_params,
 951                     &alsa_period_frames, NULL)) < 0){
 952         WARN("Unable to get period size: %d (%s)\n", err, snd_strerror(err));
 953         hr = E_FAIL;
 954         goto exit;
 955     }
 956     TRACE("alsa_period_frames: %lu\n", alsa_period_frames);
 957
 958     if((err = snd_pcm_hw_params_get_buffer_size(This->hw_params,
 959                     &This->alsa_bufsize_frames)) < 0){
 960         WARN("Unable to get buffer size: %d (%s)\n", err, snd_strerror(err));
 961         hr = E_FAIL;
 962         goto exit;
 963     }
 964
 965     sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
 966     if(!sw_params){
 967         hr = E_OUTOFMEMORY;
 968         goto exit;
 969     }
 970
 971     if((err = snd_pcm_sw_params_current(This->pcm_handle, sw_params)) < 0){
 972         WARN("Unable to get sw_params: %d (%s)\n", err, snd_strerror(err));
 973         hr = E_FAIL;
 974         goto exit;
 975     }
 976
 977     if((err = snd_pcm_sw_params_set_start_threshold(This->pcm_handle,
 978                     sw_params, 1)) < 0){
 979         WARN("Unable set start threshold to 0: %d (%s)\n", err, snd_strerror(err));
 980         hr = E_FAIL;
 981         goto exit;
 982     }
 983
 984     if((err = snd_pcm_sw_params_set_stop_threshold(This->pcm_handle,
 985                     sw_params, This->alsa_bufsize_frames)) < 0){
 986         WARN("Unable set stop threshold to %lu: %d (%s)\n",
 987                 This->alsa_bufsize_frames, err, snd_strerror(err));
 988         hr = E_FAIL;
 989         goto exit;
 990     }
 991
 992     if((err = snd_pcm_sw_params(This->pcm_handle, sw_params)) < 0){
 993         WARN("Unable set sw params: %d (%s)\n", err, snd_strerror(err));
 994         hr = E_FAIL;
 995         goto exit;
 996     }
 997
 998     if((err = snd_pcm_prepare(This->pcm_handle)) < 0){
 999         WARN("Unable to prepare device: %d (%s)\n", err, snd_strerror(err));
1000         hr = E_FAIL;
1001         goto exit;
1002     }
1003
1004     if(period)
1005         This->mmdev_period_rt = period;
1006     else
1007         This->mmdev_period_rt = DefaultPeriod;
1008
1009     /* Check if the ALSA buffer is so small that it will run out before
1010      * the next MMDevAPI period tick occurs. Allow a little wiggle room
1011      * with 120% of the period time. */
1012     mmdev_period_frames = fmt->nSamplesPerSec * (This->mmdev_period_rt / 10000000.);
1013     if(This->alsa_bufsize_frames < 1.2 * mmdev_period_frames)
1014         FIXME("ALSA buffer time is smaller than our period time. Expect underruns. (%lu < %u)\n",
1015                 This->alsa_bufsize_frames, mmdev_period_frames);
1016
1017     This->bufsize_frames = ceil((duration / 10000000.) * fmt->nSamplesPerSec);
1018     This->local_buffer = HeapAlloc(GetProcessHeap(), 0,
1019             This->bufsize_frames * fmt->nBlockAlign);
1020     if(!This->local_buffer){
1021         hr = E_OUTOFMEMORY;
1022         goto exit;
1023     }
1024     if (fmt->wBitsPerSample == 8)
1025         memset(This->local_buffer, 128, This->bufsize_frames * fmt->nBlockAlign);
1026     else
1027         memset(This->local_buffer, 0, This->bufsize_frames * fmt->nBlockAlign);
1028
1029     This->fmt = clone_format(fmt);
1030     if(!This->fmt){
1031         hr = E_OUTOFMEMORY;
1032         goto exit;
1033     }
1034
1035     This->vols = HeapAlloc(GetProcessHeap(), 0, fmt->nChannels * sizeof(float));
1036     if(!This->vols){
1037         hr = E_OUTOFMEMORY;
1038         goto exit;
1039     }
1040
1041     for(i = 0; i < fmt->nChannels; ++i)
1042         This->vols[i] = 1.f;
1043
1044     This->share = mode;
1045     This->flags = flags;
1046
1047     EnterCriticalSection(&g_sessions_lock);
1048
1049     hr = get_audio_session(sessionguid, This->parent, fmt->nChannels,
1050             &This->session);
1051     if(FAILED(hr)){
1052         LeaveCriticalSection(&g_sessions_lock);
1053         goto exit;
1054     }
1055
1056     list_add_tail(&This->session->clients, &This->entry);
1057
1058     LeaveCriticalSection(&g_sessions_lock);
1059
1060     This->initted = TRUE;
1061
1062 exit:
1063     HeapFree(GetProcessHeap(), 0, sw_params);
1064     if(FAILED(hr)){
1065         HeapFree(GetProcessHeap(), 0, This->local_buffer);
1066         This->local_buffer = NULL;
1067         CoTaskMemFree(This->fmt);
1068         This->fmt = NULL;
1069         HeapFree(GetProcessHeap(), 0, This->vols);
1070         This->vols = NULL;
1071     }
1072
1073     LeaveCriticalSection(&This->lock);
1074
1075     return hr;
1076 }
1077
1078 static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
1079         UINT32 *out)
1080 {
1081     ACImpl *This = impl_from_IAudioClient(iface);
1082
1083     TRACE("(%p)->(%p)\n", This, out);
1084
1085     if(!out)
1086         return E_POINTER;
1087
1088     EnterCriticalSection(&This->lock);
1089
1090     if(!This->initted){
1091         LeaveCriticalSection(&This->lock);
1092         return AUDCLNT_E_NOT_INITIALIZED;
1093     }
1094
1095     *out = This->bufsize_frames;
1096
1097     LeaveCriticalSection(&This->lock);
1098
1099     return S_OK;
1100 }
1101
1102 static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
1103         REFERENCE_TIME *latency)
1104 {
1105     ACImpl *This = impl_from_IAudioClient(iface);
1106
1107     TRACE("(%p)->(%p)\n", This, latency);
1108
1109     if(!latency)
1110         return E_POINTER;
1111
1112     EnterCriticalSection(&This->lock);
1113
1114     if(!This->initted){
1115         LeaveCriticalSection(&This->lock);
1116         return AUDCLNT_E_NOT_INITIALIZED;
1117     }
1118
1119     LeaveCriticalSection(&This->lock);
1120
1121     *latency = 500000;
1122
1123     return S_OK;
1124 }
1125
1126 static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
1127         UINT32 *out)
1128 {
1129     ACImpl *This = impl_from_IAudioClient(iface);
1130
1131     TRACE("(%p)->(%p)\n", This, out);
1132
1133     if(!out)
1134         return E_POINTER;
1135
1136     EnterCriticalSection(&This->lock);
1137
1138     if(!This->initted){
1139         LeaveCriticalSection(&This->lock);
1140         return AUDCLNT_E_NOT_INITIALIZED;
1141     }
1142
1143     if(This->dataflow == eRender){
1144         snd_pcm_sframes_t avail_frames;
1145
1146         avail_frames = snd_pcm_avail_update(This->pcm_handle);
1147         if(This->alsa_bufsize_frames < avail_frames ||
1148                 snd_pcm_state(This->pcm_handle) == SND_PCM_STATE_XRUN)
1149             *out = This->held_frames;
1150         else
1151             *out = This->alsa_bufsize_frames - avail_frames + This->held_frames;
1152         TRACE("PCM state: %u, avail: %ld, pad: %u\n",
1153                 snd_pcm_state(This->pcm_handle), avail_frames, *out);
1154     }else if(This->dataflow == eCapture){
1155         *out = This->held_frames;
1156     }else{
1157         LeaveCriticalSection(&This->lock);
1158         return E_UNEXPECTED;
1159     }
1160
1161     LeaveCriticalSection(&This->lock);
1162
1163     return S_OK;
1164 }
1165
1166 static DWORD get_channel_mask(unsigned int channels)
1167 {
1168     switch(channels){
1169     case 0:
1170         return 0;
1171     case 1:
1172         return KSAUDIO_SPEAKER_MONO;
1173     case 2:
1174         return KSAUDIO_SPEAKER_STEREO;
1175     case 3:
1176         return KSAUDIO_SPEAKER_STEREO | SPEAKER_LOW_FREQUENCY;
1177     case 4:
1178         return KSAUDIO_SPEAKER_QUAD;    /* not _SURROUND */
1179     case 5:
1180         return KSAUDIO_SPEAKER_QUAD | SPEAKER_LOW_FREQUENCY;
1181     case 6:
1182         return KSAUDIO_SPEAKER_5POINT1; /* not 5POINT1_SURROUND */
1183     case 7:
1184         return KSAUDIO_SPEAKER_5POINT1 | SPEAKER_BACK_CENTER;
1185     case 8:
1186         return KSAUDIO_SPEAKER_7POINT1; /* not 7POINT1_SURROUND */
1187     }
1188     FIXME("Unknown speaker configuration: %u\n", channels);
1189     return 0;
1190 }
1191
1192 static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
1193         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *fmt,
1194         WAVEFORMATEX **out)
1195 {
1196     ACImpl *This = impl_from_IAudioClient(iface);
1197     snd_pcm_format_mask_t *formats = NULL;
1198     HRESULT hr = S_OK;
1199     WAVEFORMATEX *closest = NULL;
1200     const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)fmt;
1201     unsigned int max = 0, min = 0;
1202     int err;
1203
1204     TRACE("(%p)->(%x, %p, %p)\n", This, mode, fmt, out);
1205
1206     if(!fmt || (mode == AUDCLNT_SHAREMODE_SHARED && !out))
1207         return E_POINTER;
1208
1209     if(mode != AUDCLNT_SHAREMODE_SHARED && mode != AUDCLNT_SHAREMODE_EXCLUSIVE)
1210         return E_INVALIDARG;
1211
1212     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1213             fmt->cbSize < sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX))
1214         return E_INVALIDARG;
1215
1216     dump_fmt(fmt);
1217
1218     if(out){
1219         *out = NULL;
1220         if(mode != AUDCLNT_SHAREMODE_SHARED)
1221             out = NULL;
1222     }
1223
1224     EnterCriticalSection(&This->lock);
1225
1226     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1227         hr = E_FAIL;
1228         goto exit;
1229     }
1230
1231     formats = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1232             snd_pcm_format_mask_sizeof());
1233     if(!formats){
1234         hr = E_OUTOFMEMORY;
1235         goto exit;
1236     }
1237
1238     snd_pcm_hw_params_get_format_mask(This->hw_params, formats);
1239
1240     if(fmt->wFormatTag == WAVE_FORMAT_PCM ||
1241             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1242              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))){
1243         switch(fmt->wBitsPerSample){
1244         case 8:
1245             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_U8)){
1246                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1247                 goto exit;
1248             }
1249             break;
1250         case 16:
1251             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S16_LE)){
1252                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1253                 goto exit;
1254             }
1255             break;
1256         case 24:
1257             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S24_3LE)){
1258                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1259                 goto exit;
1260             }
1261             break;
1262         case 32:
1263             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S32_LE)){
1264                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1265                 goto exit;
1266             }
1267             break;
1268         default:
1269             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1270             goto exit;
1271         }
1272     }else if(fmt->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
1273             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1274              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))){
1275         switch(fmt->wBitsPerSample){
1276         case 32:
1277             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT_LE)){
1278                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1279                 goto exit;
1280             }
1281             break;
1282         case 64:
1283             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT64_LE)){
1284                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1285                 goto exit;
1286             }
1287             break;
1288         default:
1289             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1290             goto exit;
1291         }
1292     }else{
1293         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1294         goto exit;
1295     }
1296
1297     closest = clone_format(fmt);
1298     if(!closest){
1299         hr = E_OUTOFMEMORY;
1300         goto exit;
1301     }
1302
1303     if((err = snd_pcm_hw_params_get_rate_min(This->hw_params, &min, NULL)) < 0){
1304         hr = E_FAIL;
1305         WARN("Unable to get min rate: %d (%s)\n", err, snd_strerror(err));
1306         goto exit;
1307     }
1308
1309     if((err = snd_pcm_hw_params_get_rate_max(This->hw_params, &max, NULL)) < 0){
1310         hr = E_FAIL;
1311         WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
1312         goto exit;
1313     }
1314
1315     if(fmt->nSamplesPerSec < min || fmt->nSamplesPerSec > max){
1316         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1317         goto exit;
1318     }
1319
1320     if((err = snd_pcm_hw_params_get_channels_min(This->hw_params, &min)) < 0){
1321         hr = E_FAIL;
1322         WARN("Unable to get min channels: %d (%s)\n", err, snd_strerror(err));
1323         goto exit;
1324     }
1325
1326     if((err = snd_pcm_hw_params_get_channels_max(This->hw_params, &max)) < 0){
1327         hr = E_FAIL;
1328         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
1329         goto exit;
1330     }
1331     if(max > 8)
1332         max = 2;
1333     if(fmt->nChannels > max){
1334         hr = S_FALSE;
1335         closest->nChannels = max;
1336     }else if(fmt->nChannels < min){
1337         hr = S_FALSE;
1338         closest->nChannels = min;
1339     }
1340
1341     if(closest->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
1342         DWORD mask = get_channel_mask(closest->nChannels);
1343
1344         ((WAVEFORMATEXTENSIBLE*)closest)->dwChannelMask = mask;
1345
1346         if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1347                 fmtex->dwChannelMask != 0 &&
1348                 fmtex->dwChannelMask != mask)
1349             hr = S_FALSE;
1350     }
1351
1352 exit:
1353     LeaveCriticalSection(&This->lock);
1354     HeapFree(GetProcessHeap(), 0, formats);
1355
1356     if(hr == S_FALSE && !out)
1357         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1358
1359     if(hr == S_FALSE && out) {
1360         closest->nBlockAlign =
1361             closest->nChannels * closest->wBitsPerSample / 8;
1362         closest->nAvgBytesPerSec =
1363             closest->nBlockAlign * closest->nSamplesPerSec;
1364         *out = closest;
1365     } else
1366         CoTaskMemFree(closest);
1367
1368     TRACE("returning: %08x\n", hr);
1369     return hr;
1370 }
1371
1372 static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
1373         WAVEFORMATEX **pwfx)
1374 {
1375     ACImpl *This = impl_from_IAudioClient(iface);
1376     WAVEFORMATEXTENSIBLE *fmt;
1377     snd_pcm_format_mask_t *formats;
1378     unsigned int max_rate, max_channels;
1379     int err;
1380     HRESULT hr = S_OK;
1381
1382     TRACE("(%p)->(%p)\n", This, pwfx);
1383
1384     if(!pwfx)
1385         return E_POINTER;
1386     *pwfx = NULL;
1387
1388     fmt = CoTaskMemAlloc(sizeof(WAVEFORMATEXTENSIBLE));
1389     if(!fmt)
1390         return E_OUTOFMEMORY;
1391
1392     formats = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof());
1393     if(!formats){
1394         CoTaskMemFree(fmt);
1395         return E_OUTOFMEMORY;
1396     }
1397
1398     EnterCriticalSection(&This->lock);
1399
1400     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1401         WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
1402         hr = E_FAIL;
1403         goto exit;
1404     }
1405
1406     snd_pcm_hw_params_get_format_mask(This->hw_params, formats);
1407
1408     fmt->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
1409     if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT_LE)){
1410         fmt->Format.wBitsPerSample = 32;
1411         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
1412     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S16_LE)){
1413         fmt->Format.wBitsPerSample = 16;
1414         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1415     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_U8)){
1416         fmt->Format.wBitsPerSample = 8;
1417         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1418     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S32_LE)){
1419         fmt->Format.wBitsPerSample = 32;
1420         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1421     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S24_3LE)){
1422         fmt->Format.wBitsPerSample = 24;
1423         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1424     }else{
1425         ERR("Didn't recognize any available ALSA formats\n");
1426         hr = E_FAIL;
1427         goto exit;
1428     }
1429
1430     if((err = snd_pcm_hw_params_get_channels_max(This->hw_params,
1431                     &max_channels)) < 0){
1432         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
1433         hr = E_FAIL;
1434         goto exit;
1435     }
1436
1437     if(max_channels > 2){
1438         FIXME("Don't know what to do with %u channels, pretending there's "
1439                 "only 2 channels\n", max_channels);
1440         fmt->Format.nChannels = 2;
1441     }else
1442         fmt->Format.nChannels = max_channels;
1443
1444     fmt->dwChannelMask = get_channel_mask(fmt->Format.nChannels);
1445
1446     if((err = snd_pcm_hw_params_get_rate_max(This->hw_params, &max_rate,
1447                     NULL)) < 0){
1448         WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
1449         hr = E_FAIL;
1450         goto exit;
1451     }
1452
1453     if(max_rate >= 48000)
1454         fmt->Format.nSamplesPerSec = 48000;
1455     else if(max_rate >= 44100)
1456         fmt->Format.nSamplesPerSec = 44100;
1457     else if(max_rate >= 22050)
1458         fmt->Format.nSamplesPerSec = 22050;
1459     else if(max_rate >= 11025)
1460         fmt->Format.nSamplesPerSec = 11025;
1461     else if(max_rate >= 8000)
1462         fmt->Format.nSamplesPerSec = 8000;
1463     else{
1464         ERR("Unknown max rate: %u\n", max_rate);
1465         hr = E_FAIL;
1466         goto exit;
1467     }
1468
1469     fmt->Format.nBlockAlign = (fmt->Format.wBitsPerSample *
1470             fmt->Format.nChannels) / 8;
1471     fmt->Format.nAvgBytesPerSec = fmt->Format.nSamplesPerSec *
1472         fmt->Format.nBlockAlign;
1473
1474     fmt->Samples.wValidBitsPerSample = fmt->Format.wBitsPerSample;
1475     fmt->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
1476
1477     dump_fmt((WAVEFORMATEX*)fmt);
1478     *pwfx = (WAVEFORMATEX*)fmt;
1479
1480 exit:
1481     LeaveCriticalSection(&This->lock);
1482     if(FAILED(hr))
1483         CoTaskMemFree(fmt);
1484     HeapFree(GetProcessHeap(), 0, formats);
1485
1486     return hr;
1487 }
1488
1489 static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
1490         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
1491 {
1492     ACImpl *This = impl_from_IAudioClient(iface);
1493
1494     TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);
1495
1496     if(!defperiod && !minperiod)
1497         return E_POINTER;
1498
1499     if(defperiod)
1500         *defperiod = DefaultPeriod;
1501     if(minperiod)
1502         *minperiod = MinimumPeriod;
1503
1504     return S_OK;
1505 }
1506
1507 static snd_pcm_sframes_t alsa_write_best_effort(snd_pcm_t *handle, BYTE *buf,
1508         snd_pcm_uframes_t frames, ACImpl *This)
1509 {
1510     snd_pcm_sframes_t written;
1511
1512     if(This->session->mute){
1513         int err;
1514         if((err = snd_pcm_format_set_silence(This->alsa_format, buf,
1515                         frames * This->fmt->nChannels)) < 0)
1516             WARN("Setting buffer to silence failed: %d (%s)\n", err,
1517                     snd_strerror(err));
1518     }
1519
1520     written = snd_pcm_writei(handle, buf, frames);
1521     if(written < 0){
1522         int ret;
1523
1524         if(written == -EAGAIN)
1525             /* buffer full */
1526             return 0;
1527
1528         WARN("writei failed, recovering: %ld (%s)\n", written,
1529                 snd_strerror(written));
1530
1531         ret = snd_pcm_recover(handle, written, 0);
1532         if(ret < 0){
1533             WARN("Could not recover: %d (%s)\n", ret, snd_strerror(ret));
1534             return ret;
1535         }
1536
1537         written = snd_pcm_writei(handle, buf, frames);
1538     }
1539
1540     return written;
1541 }
1542
1543 static void alsa_write_data(ACImpl *This)
1544 {
1545     snd_pcm_sframes_t written;
1546     snd_pcm_uframes_t to_write, avail;
1547     int err;
1548     BYTE *buf =
1549         This->local_buffer + (This->lcl_offs_frames * This->fmt->nBlockAlign);
1550
1551     /* this call seems to be required to get an accurate snd_pcm_state() */
1552     avail = snd_pcm_avail_update(This->pcm_handle);
1553
1554     if(snd_pcm_state(This->pcm_handle) == SND_PCM_STATE_XRUN ||
1555             avail > This->alsa_bufsize_frames){
1556         TRACE("XRun state, recovering\n");
1557
1558         if((err = snd_pcm_recover(This->pcm_handle, -EPIPE, 1)) < 0)
1559             WARN("snd_pcm_recover failed: %d (%s)\n", err, snd_strerror(err));
1560
1561         if((err = snd_pcm_reset(This->pcm_handle)) < 0)
1562             WARN("snd_pcm_reset failed: %d (%s)\n", err, snd_strerror(err));
1563
1564         if((err = snd_pcm_prepare(This->pcm_handle)) < 0)
1565             WARN("snd_pcm_prepare failed: %d (%s)\n", err, snd_strerror(err));
1566     }
1567
1568     if(This->held_frames == 0)
1569         return;
1570
1571     if(This->lcl_offs_frames + This->held_frames > This->bufsize_frames)
1572         to_write = This->bufsize_frames - This->lcl_offs_frames;
1573     else
1574         to_write = This->held_frames;
1575
1576     written = alsa_write_best_effort(This->pcm_handle, buf, to_write, This);
1577     if(written < 0){
1578         WARN("Couldn't write: %ld (%s)\n", written, snd_strerror(written));
1579         return;
1580     }
1581
1582     This->lcl_offs_frames += written;
1583     This->lcl_offs_frames %= This->bufsize_frames;
1584     This->held_frames -= written;
1585
1586     if(written < to_write){
1587         /* ALSA buffer probably full */
1588         return;
1589     }
1590
1591     if(This->held_frames){
1592         /* wrapped and have some data back at the start to write */
1593         written = alsa_write_best_effort(This->pcm_handle, This->local_buffer,
1594                 This->held_frames, This);
1595         if(written < 0){
1596             WARN("Couldn't write: %ld (%s)\n", written, snd_strerror(written));
1597             return;
1598         }
1599
1600         This->lcl_offs_frames += written;
1601         This->lcl_offs_frames %= This->bufsize_frames;
1602         This->held_frames -= written;
1603     }
1604 }
1605
1606 static void alsa_read_data(ACImpl *This)
1607 {
1608     snd_pcm_sframes_t pos, readable, nread;
1609
1610     pos = (This->held_frames + This->lcl_offs_frames) % This->bufsize_frames;
1611     readable = This->bufsize_frames - pos;
1612
1613     nread = snd_pcm_readi(This->pcm_handle,
1614             This->local_buffer + pos * This->fmt->nBlockAlign, readable);
1615     if(nread < 0){
1616         int ret;
1617
1618         WARN("read failed, recovering: %ld (%s)\n", nread, snd_strerror(nread));
1619
1620         ret = snd_pcm_recover(This->pcm_handle, nread, 0);
1621         if(ret < 0){
1622             WARN("Recover failed: %d (%s)\n", ret, snd_strerror(ret));
1623             return;
1624         }
1625
1626         nread = snd_pcm_readi(This->pcm_handle,
1627                 This->local_buffer + pos * This->fmt->nBlockAlign, readable);
1628         if(nread < 0){
1629             WARN("read failed: %ld (%s)\n", nread, snd_strerror(nread));
1630             return;
1631         }
1632     }
1633
1634     if(This->session->mute){
1635         int err;
1636         if((err = snd_pcm_format_set_silence(This->alsa_format,
1637                         This->local_buffer + pos * This->fmt->nBlockAlign,
1638                         nread)) < 0)
1639             WARN("Setting buffer to silence failed: %d (%s)\n", err,
1640                     snd_strerror(err));
1641     }
1642
1643     This->held_frames += nread;
1644
1645     if(This->held_frames > This->bufsize_frames){
1646         WARN("Overflow of unread data\n");
1647         This->lcl_offs_frames += This->held_frames;
1648         This->lcl_offs_frames %= This->bufsize_frames;
1649         This->held_frames = This->bufsize_frames;
1650     }
1651 }
1652
1653 static void CALLBACK alsa_push_buffer_data(void *user, BOOLEAN timer)
1654 {
1655     ACImpl *This = user;
1656
1657     EnterCriticalSection(&This->lock);
1658
1659     if(This->started){
1660         if(This->dataflow == eRender)
1661             alsa_write_data(This);
1662         else if(This->dataflow == eCapture)
1663             alsa_read_data(This);
1664
1665         if(This->event)
1666             SetEvent(This->event);
1667     }
1668
1669     LeaveCriticalSection(&This->lock);
1670 }
1671
1672 static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
1673 {
1674     ACImpl *This = impl_from_IAudioClient(iface);
1675
1676     TRACE("(%p)\n", This);
1677
1678     EnterCriticalSection(&This->lock);
1679
1680     if(!This->initted){
1681         LeaveCriticalSection(&This->lock);
1682         return AUDCLNT_E_NOT_INITIALIZED;
1683     }
1684
1685     if((This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) && !This->event){
1686         LeaveCriticalSection(&This->lock);
1687         return AUDCLNT_E_EVENTHANDLE_NOT_SET;
1688     }
1689
1690     if(This->started){
1691         LeaveCriticalSection(&This->lock);
1692         return AUDCLNT_E_NOT_STOPPED;
1693     }
1694
1695     if(This->dataflow == eCapture){
1696         /* dump any data that might be leftover in the ALSA capture buffer */
1697         snd_pcm_readi(This->pcm_handle, This->local_buffer,
1698                 This->bufsize_frames);
1699     }
1700
1701     if(!CreateTimerQueueTimer(&This->timer, g_timer_q, alsa_push_buffer_data,
1702             This, 0, This->mmdev_period_rt / 10000, WT_EXECUTEINTIMERTHREAD)){
1703         LeaveCriticalSection(&This->lock);
1704         WARN("Unable to create timer: %u\n", GetLastError());
1705         return E_FAIL;
1706     }
1707
1708     This->started = TRUE;
1709
1710     LeaveCriticalSection(&This->lock);
1711
1712     return S_OK;
1713 }
1714
1715 static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
1716 {
1717     ACImpl *This = impl_from_IAudioClient(iface);
1718     HANDLE event;
1719     BOOL wait;
1720
1721     TRACE("(%p)\n", This);
1722
1723     EnterCriticalSection(&This->lock);
1724
1725     if(!This->initted){
1726         LeaveCriticalSection(&This->lock);
1727         return AUDCLNT_E_NOT_INITIALIZED;
1728     }
1729
1730     if(!This->started){
1731         LeaveCriticalSection(&This->lock);
1732         return S_FALSE;
1733     }
1734
1735     if(snd_pcm_drop(This->pcm_handle) < 0)
1736         WARN("snd_pcm_drop failed\n");
1737
1738     if(snd_pcm_reset(This->pcm_handle) < 0)
1739         WARN("snd_pcm_reset failed\n");
1740
1741     if(snd_pcm_prepare(This->pcm_handle) < 0)
1742         WARN("snd_pcm_prepare failed\n");
1743
1744     event = CreateEventW(NULL, TRUE, FALSE, NULL);
1745     wait = !DeleteTimerQueueTimer(g_timer_q, This->timer, event);
1746     if(wait)
1747         WARN("DeleteTimerQueueTimer error %u\n", GetLastError());
1748     wait = wait && GetLastError() == ERROR_IO_PENDING;
1749
1750     This->started = FALSE;
1751
1752     LeaveCriticalSection(&This->lock);
1753
1754     if(event && wait)
1755         WaitForSingleObject(event, INFINITE);
1756     CloseHandle(event);
1757
1758     return S_OK;
1759 }
1760
1761 static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
1762 {
1763     ACImpl *This = impl_from_IAudioClient(iface);
1764
1765     TRACE("(%p)\n", This);
1766
1767     EnterCriticalSection(&This->lock);
1768
1769     if(!This->initted){
1770         LeaveCriticalSection(&This->lock);
1771         return AUDCLNT_E_NOT_INITIALIZED;
1772     }
1773
1774     if(This->started){
1775         LeaveCriticalSection(&This->lock);
1776         return AUDCLNT_E_NOT_STOPPED;
1777     }
1778
1779     if(This->buf_state != NOT_LOCKED){
1780         LeaveCriticalSection(&This->lock);
1781         return AUDCLNT_E_BUFFER_OPERATION_PENDING;
1782     }
1783
1784     if(snd_pcm_drop(This->pcm_handle) < 0)
1785         WARN("snd_pcm_drop failed\n");
1786
1787     if(snd_pcm_reset(This->pcm_handle) < 0)
1788         WARN("snd_pcm_reset failed\n");
1789
1790     if(snd_pcm_prepare(This->pcm_handle) < 0)
1791         WARN("snd_pcm_prepare failed\n");
1792
1793     This->held_frames = 0;
1794     This->written_frames = 0;
1795     This->lcl_offs_frames = 0;
1796
1797     LeaveCriticalSection(&This->lock);
1798
1799     return S_OK;
1800 }
1801
1802 static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
1803         HANDLE event)
1804 {
1805     ACImpl *This = impl_from_IAudioClient(iface);
1806
1807     TRACE("(%p)->(%p)\n", This, event);
1808
1809     if(!event)
1810         return E_INVALIDARG;
1811
1812     EnterCriticalSection(&This->lock);
1813
1814     if(!This->initted){
1815         LeaveCriticalSection(&This->lock);
1816         return AUDCLNT_E_NOT_INITIALIZED;
1817     }
1818
1819     if(!(This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)){
1820         LeaveCriticalSection(&This->lock);
1821         return AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED;
1822     }
1823
1824     This->event = event;
1825
1826     LeaveCriticalSection(&This->lock);
1827
1828     return S_OK;
1829 }
1830
1831 static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
1832         void **ppv)
1833 {
1834     ACImpl *This = impl_from_IAudioClient(iface);
1835
1836     TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);
1837
1838     if(!ppv)
1839         return E_POINTER;
1840     *ppv = NULL;
1841
1842     EnterCriticalSection(&This->lock);
1843
1844     if(!This->initted){
1845         LeaveCriticalSection(&This->lock);
1846         return AUDCLNT_E_NOT_INITIALIZED;
1847     }
1848
1849     if(IsEqualIID(riid, &IID_IAudioRenderClient)){
1850         if(This->dataflow != eRender){
1851             LeaveCriticalSection(&This->lock);
1852             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
1853         }
1854         IAudioRenderClient_AddRef(&This->IAudioRenderClient_iface);
1855         *ppv = &This->IAudioRenderClient_iface;
1856     }else if(IsEqualIID(riid, &IID_IAudioCaptureClient)){
1857         if(This->dataflow != eCapture){
1858             LeaveCriticalSection(&This->lock);
1859             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
1860         }
1861         IAudioCaptureClient_AddRef(&This->IAudioCaptureClient_iface);
1862         *ppv = &This->IAudioCaptureClient_iface;
1863     }else if(IsEqualIID(riid, &IID_IAudioClock)){
1864         IAudioClock_AddRef(&This->IAudioClock_iface);
1865         *ppv = &This->IAudioClock_iface;
1866     }else if(IsEqualIID(riid, &IID_IAudioStreamVolume)){
1867         IAudioStreamVolume_AddRef(&This->IAudioStreamVolume_iface);
1868         *ppv = &This->IAudioStreamVolume_iface;
1869     }else if(IsEqualIID(riid, &IID_IAudioSessionControl)){
1870         if(!This->session_wrapper){
1871             This->session_wrapper = AudioSessionWrapper_Create(This);
1872             if(!This->session_wrapper){
1873                 LeaveCriticalSection(&This->lock);
1874                 return E_OUTOFMEMORY;
1875             }
1876         }else
1877             IAudioSessionControl2_AddRef(&This->session_wrapper->IAudioSessionControl2_iface);
1878
1879         *ppv = &This->session_wrapper->IAudioSessionControl2_iface;
1880     }else if(IsEqualIID(riid, &IID_IChannelAudioVolume)){
1881         if(!This->session_wrapper){
1882             This->session_wrapper = AudioSessionWrapper_Create(This);
1883             if(!This->session_wrapper){
1884                 LeaveCriticalSection(&This->lock);
1885                 return E_OUTOFMEMORY;
1886             }
1887         }else
1888             IChannelAudioVolume_AddRef(&This->session_wrapper->IChannelAudioVolume_iface);
1889
1890         *ppv = &This->session_wrapper->IChannelAudioVolume_iface;
1891     }else if(IsEqualIID(riid, &IID_ISimpleAudioVolume)){
1892         if(!This->session_wrapper){
1893             This->session_wrapper = AudioSessionWrapper_Create(This);
1894             if(!This->session_wrapper){
1895                 LeaveCriticalSection(&This->lock);
1896                 return E_OUTOFMEMORY;
1897             }
1898         }else
1899             ISimpleAudioVolume_AddRef(&This->session_wrapper->ISimpleAudioVolume_iface);
1900
1901         *ppv = &This->session_wrapper->ISimpleAudioVolume_iface;
1902     }
1903
1904     if(*ppv){
1905         LeaveCriticalSection(&This->lock);
1906         return S_OK;
1907     }
1908
1909     LeaveCriticalSection(&This->lock);
1910
1911     FIXME("stub %s\n", debugstr_guid(riid));
1912     return E_NOINTERFACE;
1913 }
1914
1915 static const IAudioClientVtbl AudioClient_Vtbl =
1916 {
1917     AudioClient_QueryInterface,
1918     AudioClient_AddRef,
1919     AudioClient_Release,
1920     AudioClient_Initialize,
1921     AudioClient_GetBufferSize,
1922     AudioClient_GetStreamLatency,
1923     AudioClient_GetCurrentPadding,
1924     AudioClient_IsFormatSupported,
1925     AudioClient_GetMixFormat,
1926     AudioClient_GetDevicePeriod,
1927     AudioClient_Start,
1928     AudioClient_Stop,
1929     AudioClient_Reset,
1930     AudioClient_SetEventHandle,
1931     AudioClient_GetService
1932 };
1933
1934 static HRESULT WINAPI AudioRenderClient_QueryInterface(
1935         IAudioRenderClient *iface, REFIID riid, void **ppv)
1936 {
1937     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
1938
1939     if(!ppv)
1940         return E_POINTER;
1941     *ppv = NULL;
1942
1943     if(IsEqualIID(riid, &IID_IUnknown) ||
1944             IsEqualIID(riid, &IID_IAudioRenderClient))
1945         *ppv = iface;
1946     if(*ppv){
1947         IUnknown_AddRef((IUnknown*)*ppv);
1948         return S_OK;
1949     }
1950
1951     WARN("Unknown interface %s\n", debugstr_guid(riid));
1952     return E_NOINTERFACE;
1953 }
1954
1955 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
1956 {
1957     ACImpl *This = impl_from_IAudioRenderClient(iface);
1958     return AudioClient_AddRef(&This->IAudioClient_iface);
1959 }
1960
1961 static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
1962 {
1963     ACImpl *This = impl_from_IAudioRenderClient(iface);
1964     return AudioClient_Release(&This->IAudioClient_iface);
1965 }
1966
1967 static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
1968         UINT32 frames, BYTE **data)
1969 {
1970     ACImpl *This = impl_from_IAudioRenderClient(iface);
1971     UINT32 write_pos;
1972     UINT32 pad;
1973     HRESULT hr;
1974
1975     TRACE("(%p)->(%u, %p)\n", This, frames, data);
1976
1977     if(!data)
1978         return E_POINTER;
1979
1980     EnterCriticalSection(&This->lock);
1981
1982     if(This->buf_state != NOT_LOCKED){
1983         LeaveCriticalSection(&This->lock);
1984         return AUDCLNT_E_OUT_OF_ORDER;
1985     }
1986
1987     if(!frames){
1988         This->buf_state = LOCKED_NORMAL;
1989         LeaveCriticalSection(&This->lock);
1990         return S_OK;
1991     }
1992
1993     hr = IAudioClient_GetCurrentPadding(&This->IAudioClient_iface, &pad);
1994     if(FAILED(hr)){
1995         LeaveCriticalSection(&This->lock);
1996         return hr;
1997     }
1998
1999     if(pad + frames > This->bufsize_frames){
2000         LeaveCriticalSection(&This->lock);
2001         return AUDCLNT_E_BUFFER_TOO_LARGE;
2002     }
2003
2004     write_pos =
2005         (This->lcl_offs_frames + This->held_frames) % This->bufsize_frames;
2006     if(write_pos + frames > This->bufsize_frames){
2007         if(This->tmp_buffer_frames < frames){
2008             if(This->tmp_buffer)
2009                 This->tmp_buffer = HeapReAlloc(GetProcessHeap(), 0,
2010                         This->tmp_buffer, frames * This->fmt->nBlockAlign);
2011             else
2012                 This->tmp_buffer = HeapAlloc(GetProcessHeap(), 0,
2013                         frames * This->fmt->nBlockAlign);
2014             if(!This->tmp_buffer){
2015                 LeaveCriticalSection(&This->lock);
2016                 return E_OUTOFMEMORY;
2017             }
2018             This->tmp_buffer_frames = frames;
2019         }
2020         *data = This->tmp_buffer;
2021         This->buf_state = LOCKED_WRAPPED;
2022     }else{
2023         *data = This->local_buffer + write_pos * This->fmt->nBlockAlign;
2024         This->buf_state = LOCKED_NORMAL;
2025     }
2026
2027     LeaveCriticalSection(&This->lock);
2028
2029     return S_OK;
2030 }
2031
2032 static void alsa_wrap_buffer(ACImpl *This, BYTE *buffer, UINT32 written_frames)
2033 {
2034     snd_pcm_uframes_t write_offs_frames =
2035         (This->lcl_offs_frames + This->held_frames) % This->bufsize_frames;
2036     UINT32 write_offs_bytes = write_offs_frames * This->fmt->nBlockAlign;
2037     snd_pcm_uframes_t chunk_frames = This->bufsize_frames - write_offs_frames;
2038     UINT32 chunk_bytes = chunk_frames * This->fmt->nBlockAlign;
2039     UINT32 written_bytes = written_frames * This->fmt->nBlockAlign;
2040
2041     if(written_bytes <= chunk_bytes){
2042         memcpy(This->local_buffer + write_offs_bytes, buffer, written_bytes);
2043     }else{
2044         memcpy(This->local_buffer + write_offs_bytes, buffer, chunk_bytes);
2045         memcpy(This->local_buffer, buffer + chunk_bytes,
2046                 written_bytes - chunk_bytes);
2047     }
2048 }
2049
2050 static HRESULT WINAPI AudioRenderClient_ReleaseBuffer(
2051         IAudioRenderClient *iface, UINT32 written_frames, DWORD flags)
2052 {
2053     ACImpl *This = impl_from_IAudioRenderClient(iface);
2054     BYTE *buffer;
2055
2056     TRACE("(%p)->(%u, %x)\n", This, written_frames, flags);
2057
2058     EnterCriticalSection(&This->lock);
2059
2060     if(This->buf_state == NOT_LOCKED || !written_frames){
2061         This->buf_state = NOT_LOCKED;
2062         LeaveCriticalSection(&This->lock);
2063         return written_frames ? AUDCLNT_E_OUT_OF_ORDER : S_OK;
2064     }
2065
2066     if(This->buf_state == LOCKED_NORMAL)
2067         buffer = This->local_buffer + This->fmt->nBlockAlign *
2068           ((This->lcl_offs_frames + This->held_frames) % This->bufsize_frames);
2069     else
2070         buffer = This->tmp_buffer;
2071
2072     if(flags & AUDCLNT_BUFFERFLAGS_SILENT){
2073         if(This->fmt->wBitsPerSample == 8)
2074             memset(buffer, 128, written_frames * This->fmt->nBlockAlign);
2075         else
2076             memset(buffer, 0, written_frames * This->fmt->nBlockAlign);
2077     }
2078
2079     if(This->buf_state == LOCKED_WRAPPED)
2080         alsa_wrap_buffer(This, buffer, written_frames);
2081
2082     This->held_frames += written_frames;
2083     This->written_frames += written_frames;
2084     This->buf_state = NOT_LOCKED;
2085
2086     LeaveCriticalSection(&This->lock);
2087
2088     return S_OK;
2089 }
2090
2091 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl = {
2092     AudioRenderClient_QueryInterface,
2093     AudioRenderClient_AddRef,
2094     AudioRenderClient_Release,
2095     AudioRenderClient_GetBuffer,
2096     AudioRenderClient_ReleaseBuffer
2097 };
2098
2099 static HRESULT WINAPI AudioCaptureClient_QueryInterface(
2100         IAudioCaptureClient *iface, REFIID riid, void **ppv)
2101 {
2102     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2103
2104     if(!ppv)
2105         return E_POINTER;
2106     *ppv = NULL;
2107
2108     if(IsEqualIID(riid, &IID_IUnknown) ||
2109             IsEqualIID(riid, &IID_IAudioCaptureClient))
2110         *ppv = iface;
2111     if(*ppv){
2112         IUnknown_AddRef((IUnknown*)*ppv);
2113         return S_OK;
2114     }
2115
2116     WARN("Unknown interface %s\n", debugstr_guid(riid));
2117     return E_NOINTERFACE;
2118 }
2119
2120 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
2121 {
2122     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2123     return IAudioClient_AddRef(&This->IAudioClient_iface);
2124 }
2125
2126 static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
2127 {
2128     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2129     return IAudioClient_Release(&This->IAudioClient_iface);
2130 }
2131
2132 static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
2133         BYTE **data, UINT32 *frames, DWORD *flags, UINT64 *devpos,
2134         UINT64 *qpcpos)
2135 {
2136     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2137     HRESULT hr;
2138
2139     TRACE("(%p)->(%p, %p, %p, %p, %p)\n", This, data, frames, flags,
2140             devpos, qpcpos);
2141
2142     if(!data || !frames || !flags)
2143         return E_POINTER;
2144
2145     EnterCriticalSection(&This->lock);
2146
2147     if(This->buf_state != NOT_LOCKED){
2148         LeaveCriticalSection(&This->lock);
2149         return AUDCLNT_E_OUT_OF_ORDER;
2150     }
2151
2152     hr = IAudioCaptureClient_GetNextPacketSize(iface, frames);
2153     if(FAILED(hr)){
2154         LeaveCriticalSection(&This->lock);
2155         return hr;
2156     }
2157
2158     *flags = 0;
2159
2160     if(This->lcl_offs_frames + *frames > This->bufsize_frames){
2161         UINT32 chunk_bytes, offs_bytes, frames_bytes;
2162         if(This->tmp_buffer_frames < *frames){
2163             if(This->tmp_buffer)
2164                 This->tmp_buffer = HeapReAlloc(GetProcessHeap(), 0,
2165                         This->tmp_buffer, *frames * This->fmt->nBlockAlign);
2166             else
2167                 This->tmp_buffer = HeapAlloc(GetProcessHeap(), 0,
2168                         *frames * This->fmt->nBlockAlign);
2169             if(!This->tmp_buffer){
2170                 LeaveCriticalSection(&This->lock);
2171                 return E_OUTOFMEMORY;
2172             }
2173             This->tmp_buffer_frames = *frames;
2174         }
2175
2176         *data = This->tmp_buffer;
2177         chunk_bytes = (This->bufsize_frames - This->lcl_offs_frames) *
2178             This->fmt->nBlockAlign;
2179         offs_bytes = This->lcl_offs_frames * This->fmt->nBlockAlign;
2180         frames_bytes = *frames * This->fmt->nBlockAlign;
2181         memcpy(This->tmp_buffer, This->local_buffer + offs_bytes, chunk_bytes);
2182         memcpy(This->tmp_buffer + chunk_bytes, This->local_buffer,
2183                 frames_bytes - chunk_bytes);
2184     }else
2185         *data = This->local_buffer +
2186             This->lcl_offs_frames * This->fmt->nBlockAlign;
2187
2188     This->buf_state = LOCKED_NORMAL;
2189
2190     if(devpos || qpcpos)
2191         IAudioClock_GetPosition(&This->IAudioClock_iface, devpos, qpcpos);
2192
2193     LeaveCriticalSection(&This->lock);
2194
2195     return *frames ? S_OK : AUDCLNT_S_BUFFER_EMPTY;
2196 }
2197
2198 static HRESULT WINAPI AudioCaptureClient_ReleaseBuffer(
2199         IAudioCaptureClient *iface, UINT32 done)
2200 {
2201     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2202
2203     TRACE("(%p)->(%u)\n", This, done);
2204
2205     EnterCriticalSection(&This->lock);
2206
2207     if(This->buf_state == NOT_LOCKED){
2208         LeaveCriticalSection(&This->lock);
2209         return AUDCLNT_E_OUT_OF_ORDER;
2210     }
2211
2212     This->held_frames -= done;
2213     This->lcl_offs_frames += done;
2214     This->lcl_offs_frames %= This->bufsize_frames;
2215
2216     This->buf_state = NOT_LOCKED;
2217
2218     LeaveCriticalSection(&This->lock);
2219
2220     return S_OK;
2221 }
2222
2223 static HRESULT WINAPI AudioCaptureClient_GetNextPacketSize(
2224         IAudioCaptureClient *iface, UINT32 *frames)
2225 {
2226     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2227
2228     TRACE("(%p)->(%p)\n", This, frames);
2229
2230     return AudioClient_GetCurrentPadding(&This->IAudioClient_iface, frames);
2231 }
2232
2233 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl =
2234 {
2235     AudioCaptureClient_QueryInterface,
2236     AudioCaptureClient_AddRef,
2237     AudioCaptureClient_Release,
2238     AudioCaptureClient_GetBuffer,
2239     AudioCaptureClient_ReleaseBuffer,
2240     AudioCaptureClient_GetNextPacketSize
2241 };
2242
2243 static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
2244         REFIID riid, void **ppv)
2245 {
2246     ACImpl *This = impl_from_IAudioClock(iface);
2247
2248     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2249
2250     if(!ppv)
2251         return E_POINTER;
2252     *ppv = NULL;
2253
2254     if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClock))
2255         *ppv = iface;
2256     else if(IsEqualIID(riid, &IID_IAudioClock2))
2257         *ppv = &This->IAudioClock2_iface;
2258     if(*ppv){
2259         IUnknown_AddRef((IUnknown*)*ppv);
2260         return S_OK;
2261     }
2262
2263     WARN("Unknown interface %s\n", debugstr_guid(riid));
2264     return E_NOINTERFACE;
2265 }
2266
2267 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
2268 {
2269     ACImpl *This = impl_from_IAudioClock(iface);
2270     return IAudioClient_AddRef(&This->IAudioClient_iface);
2271 }
2272
2273 static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
2274 {
2275     ACImpl *This = impl_from_IAudioClock(iface);
2276     return IAudioClient_Release(&This->IAudioClient_iface);
2277 }
2278
2279 static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
2280 {
2281     ACImpl *This = impl_from_IAudioClock(iface);
2282
2283     TRACE("(%p)->(%p)\n", This, freq);
2284
2285     *freq = This->fmt->nSamplesPerSec;
2286
2287     return S_OK;
2288 }
2289
2290 static HRESULT WINAPI AudioClock_GetPosition(IAudioClock *iface, UINT64 *pos,
2291         UINT64 *qpctime)
2292 {
2293     ACImpl *This = impl_from_IAudioClock(iface);
2294     UINT32 pad;
2295     HRESULT hr;
2296
2297     TRACE("(%p)->(%p, %p)\n", This, pos, qpctime);
2298
2299     if(!pos)
2300         return E_POINTER;
2301
2302     EnterCriticalSection(&This->lock);
2303
2304     hr = IAudioClient_GetCurrentPadding(&This->IAudioClient_iface, &pad);
2305     if(FAILED(hr)){
2306         LeaveCriticalSection(&This->lock);
2307         return hr;
2308     }
2309
2310     if(This->dataflow == eRender)
2311         *pos = This->written_frames - pad;
2312     else if(This->dataflow == eCapture)
2313         *pos = This->written_frames + pad;
2314
2315     LeaveCriticalSection(&This->lock);
2316
2317     if(qpctime){
2318         LARGE_INTEGER stamp, freq;
2319         QueryPerformanceCounter(&stamp);
2320         QueryPerformanceFrequency(&freq);
2321         *qpctime = (stamp.QuadPart * (INT64)10000000) / freq.QuadPart;
2322     }
2323
2324     return S_OK;
2325 }
2326
2327 static HRESULT WINAPI AudioClock_GetCharacteristics(IAudioClock *iface,
2328         DWORD *chars)
2329 {
2330     ACImpl *This = impl_from_IAudioClock(iface);
2331
2332     TRACE("(%p)->(%p)\n", This, chars);
2333
2334     if(!chars)
2335         return E_POINTER;
2336
2337     *chars = AUDIOCLOCK_CHARACTERISTIC_FIXED_FREQ;
2338
2339     return S_OK;
2340 }
2341
2342 static const IAudioClockVtbl AudioClock_Vtbl =
2343 {
2344     AudioClock_QueryInterface,
2345     AudioClock_AddRef,
2346     AudioClock_Release,
2347     AudioClock_GetFrequency,
2348     AudioClock_GetPosition,
2349     AudioClock_GetCharacteristics
2350 };
2351
2352 static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
2353         REFIID riid, void **ppv)
2354 {
2355     ACImpl *This = impl_from_IAudioClock2(iface);
2356     return IAudioClock_QueryInterface(&This->IAudioClock_iface, riid, ppv);
2357 }
2358
2359 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
2360 {
2361     ACImpl *This = impl_from_IAudioClock2(iface);
2362     return IAudioClient_AddRef(&This->IAudioClient_iface);
2363 }
2364
2365 static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
2366 {
2367     ACImpl *This = impl_from_IAudioClock2(iface);
2368     return IAudioClient_Release(&This->IAudioClient_iface);
2369 }
2370
2371 static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
2372         UINT64 *pos, UINT64 *qpctime)
2373 {
2374     ACImpl *This = impl_from_IAudioClock2(iface);
2375
2376     FIXME("(%p)->(%p, %p)\n", This, pos, qpctime);
2377
2378     return E_NOTIMPL;
2379 }
2380
2381 static const IAudioClock2Vtbl AudioClock2_Vtbl =
2382 {
2383     AudioClock2_QueryInterface,
2384     AudioClock2_AddRef,
2385     AudioClock2_Release,
2386     AudioClock2_GetDevicePosition
2387 };
2388
2389 static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
2390 {
2391     AudioSessionWrapper *ret;
2392
2393     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
2394             sizeof(AudioSessionWrapper));
2395     if(!ret)
2396         return NULL;
2397
2398     ret->IAudioSessionControl2_iface.lpVtbl = &AudioSessionControl2_Vtbl;
2399     ret->ISimpleAudioVolume_iface.lpVtbl = &SimpleAudioVolume_Vtbl;
2400     ret->IChannelAudioVolume_iface.lpVtbl = &ChannelAudioVolume_Vtbl;
2401
2402     ret->ref = 1;
2403
2404     ret->client = client;
2405     if(client){
2406         ret->session = client->session;
2407         AudioClient_AddRef(&client->IAudioClient_iface);
2408     }
2409
2410     return ret;
2411 }
2412
2413 static HRESULT WINAPI AudioSessionControl_QueryInterface(
2414         IAudioSessionControl2 *iface, REFIID riid, void **ppv)
2415 {
2416     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2417
2418     if(!ppv)
2419         return E_POINTER;
2420     *ppv = NULL;
2421
2422     if(IsEqualIID(riid, &IID_IUnknown) ||
2423             IsEqualIID(riid, &IID_IAudioSessionControl) ||
2424             IsEqualIID(riid, &IID_IAudioSessionControl2))
2425         *ppv = iface;
2426     if(*ppv){
2427         IUnknown_AddRef((IUnknown*)*ppv);
2428         return S_OK;
2429     }
2430
2431     WARN("Unknown interface %s\n", debugstr_guid(riid));
2432     return E_NOINTERFACE;
2433 }
2434
2435 static ULONG WINAPI AudioSessionControl_AddRef(IAudioSessionControl2 *iface)
2436 {
2437     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2438     ULONG ref;
2439     ref = InterlockedIncrement(&This->ref);
2440     TRACE("(%p) Refcount now %u\n", This, ref);
2441     return ref;
2442 }
2443
2444 static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
2445 {
2446     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2447     ULONG ref;
2448     ref = InterlockedDecrement(&This->ref);
2449     TRACE("(%p) Refcount now %u\n", This, ref);
2450     if(!ref){
2451         if(This->client){
2452             EnterCriticalSection(&This->client->lock);
2453             This->client->session_wrapper = NULL;
2454             LeaveCriticalSection(&This->client->lock);
2455             AudioClient_Release(&This->client->IAudioClient_iface);
2456         }
2457         HeapFree(GetProcessHeap(), 0, This);
2458     }
2459     return ref;
2460 }
2461
2462 static HRESULT WINAPI AudioSessionControl_GetState(IAudioSessionControl2 *iface,
2463         AudioSessionState *state)
2464 {
2465     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2466     ACImpl *client;
2467
2468     TRACE("(%p)->(%p)\n", This, state);
2469
2470     if(!state)
2471         return NULL_PTR_ERR;
2472
2473     EnterCriticalSection(&g_sessions_lock);
2474
2475     if(list_empty(&This->session->clients)){
2476         *state = AudioSessionStateExpired;
2477         LeaveCriticalSection(&g_sessions_lock);
2478         return S_OK;
2479     }
2480
2481     LIST_FOR_EACH_ENTRY(client, &This->session->clients, ACImpl, entry){
2482         EnterCriticalSection(&client->lock);
2483         if(client->started){
2484             *state = AudioSessionStateActive;
2485             LeaveCriticalSection(&client->lock);
2486             LeaveCriticalSection(&g_sessions_lock);
2487             return S_OK;
2488         }
2489         LeaveCriticalSection(&client->lock);
2490     }
2491
2492     LeaveCriticalSection(&g_sessions_lock);
2493
2494     *state = AudioSessionStateInactive;
2495
2496     return S_OK;
2497 }
2498
2499 static HRESULT WINAPI AudioSessionControl_GetDisplayName(
2500         IAudioSessionControl2 *iface, WCHAR **name)
2501 {
2502     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2503
2504     FIXME("(%p)->(%p) - stub\n", This, name);
2505
2506     return E_NOTIMPL;
2507 }
2508
2509 static HRESULT WINAPI AudioSessionControl_SetDisplayName(
2510         IAudioSessionControl2 *iface, const WCHAR *name, const GUID *session)
2511 {
2512     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2513
2514     FIXME("(%p)->(%p, %s) - stub\n", This, name, debugstr_guid(session));
2515
2516     return E_NOTIMPL;
2517 }
2518
2519 static HRESULT WINAPI AudioSessionControl_GetIconPath(
2520         IAudioSessionControl2 *iface, WCHAR **path)
2521 {
2522     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2523
2524     FIXME("(%p)->(%p) - stub\n", This, path);
2525
2526     return E_NOTIMPL;
2527 }
2528
2529 static HRESULT WINAPI AudioSessionControl_SetIconPath(
2530         IAudioSessionControl2 *iface, const WCHAR *path, const GUID *session)
2531 {
2532     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2533
2534     FIXME("(%p)->(%p, %s) - stub\n", This, path, debugstr_guid(session));
2535
2536     return E_NOTIMPL;
2537 }
2538
2539 static HRESULT WINAPI AudioSessionControl_GetGroupingParam(
2540         IAudioSessionControl2 *iface, GUID *group)
2541 {
2542     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2543
2544     FIXME("(%p)->(%p) - stub\n", This, group);
2545
2546     return E_NOTIMPL;
2547 }
2548
2549 static HRESULT WINAPI AudioSessionControl_SetGroupingParam(
2550         IAudioSessionControl2 *iface, const GUID *group, const GUID *session)
2551 {
2552     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2553
2554     FIXME("(%p)->(%s, %s) - stub\n", This, debugstr_guid(group),
2555             debugstr_guid(session));
2556
2557     return E_NOTIMPL;
2558 }
2559
2560 static HRESULT WINAPI AudioSessionControl_RegisterAudioSessionNotification(
2561         IAudioSessionControl2 *iface, IAudioSessionEvents *events)
2562 {
2563     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2564
2565     FIXME("(%p)->(%p) - stub\n", This, events);
2566
2567     return S_OK;
2568 }
2569
2570 static HRESULT WINAPI AudioSessionControl_UnregisterAudioSessionNotification(
2571         IAudioSessionControl2 *iface, IAudioSessionEvents *events)
2572 {
2573     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2574
2575     FIXME("(%p)->(%p) - stub\n", This, events);
2576
2577     return S_OK;
2578 }
2579
2580 static HRESULT WINAPI AudioSessionControl_GetSessionIdentifier(
2581         IAudioSessionControl2 *iface, WCHAR **id)
2582 {
2583     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2584
2585     FIXME("(%p)->(%p) - stub\n", This, id);
2586
2587     return E_NOTIMPL;
2588 }
2589
2590 static HRESULT WINAPI AudioSessionControl_GetSessionInstanceIdentifier(
2591         IAudioSessionControl2 *iface, WCHAR **id)
2592 {
2593     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2594
2595     FIXME("(%p)->(%p) - stub\n", This, id);
2596
2597     return E_NOTIMPL;
2598 }
2599
2600 static HRESULT WINAPI AudioSessionControl_GetProcessId(
2601         IAudioSessionControl2 *iface, DWORD *pid)
2602 {
2603     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2604
2605     TRACE("(%p)->(%p)\n", This, pid);
2606
2607     if(!pid)
2608         return E_POINTER;
2609
2610     *pid = GetCurrentProcessId();
2611
2612     return S_OK;
2613 }
2614
2615 static HRESULT WINAPI AudioSessionControl_IsSystemSoundsSession(
2616         IAudioSessionControl2 *iface)
2617 {
2618     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2619
2620     TRACE("(%p)\n", This);
2621
2622     return S_FALSE;
2623 }
2624
2625 static HRESULT WINAPI AudioSessionControl_SetDuckingPreference(
2626         IAudioSessionControl2 *iface, BOOL optout)
2627 {
2628     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2629
2630     TRACE("(%p)->(%d)\n", This, optout);
2631
2632     return S_OK;
2633 }
2634
2635 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl =
2636 {
2637     AudioSessionControl_QueryInterface,
2638     AudioSessionControl_AddRef,
2639     AudioSessionControl_Release,
2640     AudioSessionControl_GetState,
2641     AudioSessionControl_GetDisplayName,
2642     AudioSessionControl_SetDisplayName,
2643     AudioSessionControl_GetIconPath,
2644     AudioSessionControl_SetIconPath,
2645     AudioSessionControl_GetGroupingParam,
2646     AudioSessionControl_SetGroupingParam,
2647     AudioSessionControl_RegisterAudioSessionNotification,
2648     AudioSessionControl_UnregisterAudioSessionNotification,
2649     AudioSessionControl_GetSessionIdentifier,
2650     AudioSessionControl_GetSessionInstanceIdentifier,
2651     AudioSessionControl_GetProcessId,
2652     AudioSessionControl_IsSystemSoundsSession,
2653     AudioSessionControl_SetDuckingPreference
2654 };
2655
2656 static HRESULT WINAPI SimpleAudioVolume_QueryInterface(
2657         ISimpleAudioVolume *iface, REFIID riid, void **ppv)
2658 {
2659     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2660
2661     if(!ppv)
2662         return E_POINTER;
2663     *ppv = NULL;
2664
2665     if(IsEqualIID(riid, &IID_IUnknown) ||
2666             IsEqualIID(riid, &IID_ISimpleAudioVolume))
2667         *ppv = iface;
2668     if(*ppv){
2669         IUnknown_AddRef((IUnknown*)*ppv);
2670         return S_OK;
2671     }
2672
2673     WARN("Unknown interface %s\n", debugstr_guid(riid));
2674     return E_NOINTERFACE;
2675 }
2676
2677 static ULONG WINAPI SimpleAudioVolume_AddRef(ISimpleAudioVolume *iface)
2678 {
2679     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2680     return AudioSessionControl_AddRef(&This->IAudioSessionControl2_iface);
2681 }
2682
2683 static ULONG WINAPI SimpleAudioVolume_Release(ISimpleAudioVolume *iface)
2684 {
2685     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2686     return AudioSessionControl_Release(&This->IAudioSessionControl2_iface);
2687 }
2688
2689 static HRESULT WINAPI SimpleAudioVolume_SetMasterVolume(
2690         ISimpleAudioVolume *iface, float level, const GUID *context)
2691 {
2692     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2693     AudioSession *session = This->session;
2694
2695     TRACE("(%p)->(%f, %s)\n", session, level, wine_dbgstr_guid(context));
2696
2697     if(level < 0.f || level > 1.f)
2698         return E_INVALIDARG;
2699
2700     if(context)
2701         FIXME("Notifications not supported yet\n");
2702
2703     TRACE("ALSA does not support volume control\n");
2704
2705     EnterCriticalSection(&session->lock);
2706
2707     session->master_vol = level;
2708
2709     LeaveCriticalSection(&session->lock);
2710
2711     return S_OK;
2712 }
2713
2714 static HRESULT WINAPI SimpleAudioVolume_GetMasterVolume(
2715         ISimpleAudioVolume *iface, float *level)
2716 {
2717     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2718     AudioSession *session = This->session;
2719
2720     TRACE("(%p)->(%p)\n", session, level);
2721
2722     if(!level)
2723         return NULL_PTR_ERR;
2724
2725     *level = session->master_vol;
2726
2727     return S_OK;
2728 }
2729
2730 static HRESULT WINAPI SimpleAudioVolume_SetMute(ISimpleAudioVolume *iface,
2731         BOOL mute, const GUID *context)
2732 {
2733     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2734     AudioSession *session = This->session;
2735
2736     TRACE("(%p)->(%u, %p)\n", session, mute, context);
2737
2738     if(context)
2739         FIXME("Notifications not supported yet\n");
2740
2741     session->mute = mute;
2742
2743     return S_OK;
2744 }
2745
2746 static HRESULT WINAPI SimpleAudioVolume_GetMute(ISimpleAudioVolume *iface,
2747         BOOL *mute)
2748 {
2749     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2750     AudioSession *session = This->session;
2751
2752     TRACE("(%p)->(%p)\n", session, mute);
2753
2754     if(!mute)
2755         return NULL_PTR_ERR;
2756
2757     *mute = session->mute;
2758
2759     return S_OK;
2760 }
2761
2762 static const ISimpleAudioVolumeVtbl SimpleAudioVolume_Vtbl  =
2763 {
2764     SimpleAudioVolume_QueryInterface,
2765     SimpleAudioVolume_AddRef,
2766     SimpleAudioVolume_Release,
2767     SimpleAudioVolume_SetMasterVolume,
2768     SimpleAudioVolume_GetMasterVolume,
2769     SimpleAudioVolume_SetMute,
2770     SimpleAudioVolume_GetMute
2771 };
2772
2773 static HRESULT WINAPI AudioStreamVolume_QueryInterface(
2774         IAudioStreamVolume *iface, REFIID riid, void **ppv)
2775 {
2776     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2777
2778     if(!ppv)
2779         return E_POINTER;
2780     *ppv = NULL;
2781
2782     if(IsEqualIID(riid, &IID_IUnknown) ||
2783             IsEqualIID(riid, &IID_IAudioStreamVolume))
2784         *ppv = iface;
2785     if(*ppv){
2786         IUnknown_AddRef((IUnknown*)*ppv);
2787         return S_OK;
2788     }
2789
2790     WARN("Unknown interface %s\n", debugstr_guid(riid));
2791     return E_NOINTERFACE;
2792 }
2793
2794 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
2795 {
2796     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2797     return IAudioClient_AddRef(&This->IAudioClient_iface);
2798 }
2799
2800 static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
2801 {
2802     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2803     return IAudioClient_Release(&This->IAudioClient_iface);
2804 }
2805
2806 static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
2807         IAudioStreamVolume *iface, UINT32 *out)
2808 {
2809     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2810
2811     TRACE("(%p)->(%p)\n", This, out);
2812
2813     if(!out)
2814         return E_POINTER;
2815
2816     *out = This->fmt->nChannels;
2817
2818     return S_OK;
2819 }
2820
2821 static HRESULT WINAPI AudioStreamVolume_SetChannelVolume(
2822         IAudioStreamVolume *iface, UINT32 index, float level)
2823 {
2824     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2825
2826     TRACE("(%p)->(%d, %f)\n", This, index, level);
2827
2828     if(level < 0.f || level > 1.f)
2829         return E_INVALIDARG;
2830
2831     if(index >= This->fmt->nChannels)
2832         return E_INVALIDARG;
2833
2834     TRACE("ALSA does not support volume control\n");
2835
2836     EnterCriticalSection(&This->lock);
2837
2838     This->vols[index] = level;
2839
2840     LeaveCriticalSection(&This->lock);
2841
2842     return S_OK;
2843 }
2844
2845 static HRESULT WINAPI AudioStreamVolume_GetChannelVolume(
2846         IAudioStreamVolume *iface, UINT32 index, float *level)
2847 {
2848     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2849
2850     TRACE("(%p)->(%d, %p)\n", This, index, level);
2851
2852     if(!level)
2853         return E_POINTER;
2854
2855     if(index >= This->fmt->nChannels)
2856         return E_INVALIDARG;
2857
2858     *level = This->vols[index];
2859
2860     return S_OK;
2861 }
2862
2863 static HRESULT WINAPI AudioStreamVolume_SetAllVolumes(
2864         IAudioStreamVolume *iface, UINT32 count, const float *levels)
2865 {
2866     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2867     int i;
2868
2869     TRACE("(%p)->(%d, %p)\n", This, count, levels);
2870
2871     if(!levels)
2872         return E_POINTER;
2873
2874     if(count != This->fmt->nChannels)
2875         return E_INVALIDARG;
2876
2877     TRACE("ALSA does not support volume control\n");
2878
2879     EnterCriticalSection(&This->lock);
2880
2881     for(i = 0; i < count; ++i)
2882         This->vols[i] = levels[i];
2883
2884     LeaveCriticalSection(&This->lock);
2885
2886     return S_OK;
2887 }
2888
2889 static HRESULT WINAPI AudioStreamVolume_GetAllVolumes(
2890         IAudioStreamVolume *iface, UINT32 count, float *levels)
2891 {
2892     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2893     int i;
2894
2895     TRACE("(%p)->(%d, %p)\n", This, count, levels);
2896
2897     if(!levels)
2898         return E_POINTER;
2899
2900     if(count != This->fmt->nChannels)
2901         return E_INVALIDARG;
2902
2903     EnterCriticalSection(&This->lock);
2904
2905     for(i = 0; i < count; ++i)
2906         levels[i] = This->vols[i];
2907
2908     LeaveCriticalSection(&This->lock);
2909
2910     return S_OK;
2911 }
2912
2913 static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl =
2914 {
2915     AudioStreamVolume_QueryInterface,
2916     AudioStreamVolume_AddRef,
2917     AudioStreamVolume_Release,
2918     AudioStreamVolume_GetChannelCount,
2919     AudioStreamVolume_SetChannelVolume,
2920     AudioStreamVolume_GetChannelVolume,
2921     AudioStreamVolume_SetAllVolumes,
2922     AudioStreamVolume_GetAllVolumes
2923 };
2924
2925 static HRESULT WINAPI ChannelAudioVolume_QueryInterface(
2926         IChannelAudioVolume *iface, REFIID riid, void **ppv)
2927 {
2928     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2929
2930     if(!ppv)
2931         return E_POINTER;
2932     *ppv = NULL;
2933
2934     if(IsEqualIID(riid, &IID_IUnknown) ||
2935             IsEqualIID(riid, &IID_IChannelAudioVolume))
2936         *ppv = iface;
2937     if(*ppv){
2938         IUnknown_AddRef((IUnknown*)*ppv);
2939         return S_OK;
2940     }
2941
2942     WARN("Unknown interface %s\n", debugstr_guid(riid));
2943     return E_NOINTERFACE;
2944 }
2945
2946 static ULONG WINAPI ChannelAudioVolume_AddRef(IChannelAudioVolume *iface)
2947 {
2948     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2949     return AudioSessionControl_AddRef(&This->IAudioSessionControl2_iface);
2950 }
2951
2952 static ULONG WINAPI ChannelAudioVolume_Release(IChannelAudioVolume *iface)
2953 {
2954     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2955     return AudioSessionControl_Release(&This->IAudioSessionControl2_iface);
2956 }
2957
2958 static HRESULT WINAPI ChannelAudioVolume_GetChannelCount(
2959         IChannelAudioVolume *iface, UINT32 *out)
2960 {
2961     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2962     AudioSession *session = This->session;
2963
2964     TRACE("(%p)->(%p)\n", session, out);
2965
2966     if(!out)
2967         return NULL_PTR_ERR;
2968
2969     *out = session->channel_count;
2970
2971     return S_OK;
2972 }
2973
2974 static HRESULT WINAPI ChannelAudioVolume_SetChannelVolume(
2975         IChannelAudioVolume *iface, UINT32 index, float level,
2976         const GUID *context)
2977 {
2978     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2979     AudioSession *session = This->session;
2980
2981     TRACE("(%p)->(%d, %f, %s)\n", session, index, level,
2982             wine_dbgstr_guid(context));
2983
2984     if(level < 0.f || level > 1.f)
2985         return E_INVALIDARG;
2986
2987     if(index >= session->channel_count)
2988         return E_INVALIDARG;
2989
2990     if(context)
2991         FIXME("Notifications not supported yet\n");
2992
2993     TRACE("ALSA does not support volume control\n");
2994
2995     EnterCriticalSection(&session->lock);
2996
2997     session->channel_vols[index] = level;
2998
2999     LeaveCriticalSection(&session->lock);
3000
3001     return S_OK;
3002 }
3003
3004 static HRESULT WINAPI ChannelAudioVolume_GetChannelVolume(
3005         IChannelAudioVolume *iface, UINT32 index, float *level)
3006 {
3007     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3008     AudioSession *session = This->session;
3009
3010     TRACE("(%p)->(%d, %p)\n", session, index, level);
3011
3012     if(!level)
3013         return NULL_PTR_ERR;
3014
3015     if(index >= session->channel_count)
3016         return E_INVALIDARG;
3017
3018     *level = session->channel_vols[index];
3019
3020     return S_OK;
3021 }
3022
3023 static HRESULT WINAPI ChannelAudioVolume_SetAllVolumes(
3024         IChannelAudioVolume *iface, UINT32 count, const float *levels,
3025         const GUID *context)
3026 {
3027     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3028     AudioSession *session = This->session;
3029     int i;
3030
3031     TRACE("(%p)->(%d, %p, %s)\n", session, count, levels,
3032             wine_dbgstr_guid(context));
3033
3034     if(!levels)
3035         return NULL_PTR_ERR;
3036
3037     if(count != session->channel_count)
3038         return E_INVALIDARG;
3039
3040     if(context)
3041         FIXME("Notifications not supported yet\n");
3042
3043     TRACE("ALSA does not support volume control\n");
3044
3045     EnterCriticalSection(&session->lock);
3046
3047     for(i = 0; i < count; ++i)
3048         session->channel_vols[i] = levels[i];
3049
3050     LeaveCriticalSection(&session->lock);
3051
3052     return S_OK;
3053 }
3054
3055 static HRESULT WINAPI ChannelAudioVolume_GetAllVolumes(
3056         IChannelAudioVolume *iface, UINT32 count, float *levels)
3057 {
3058     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3059     AudioSession *session = This->session;
3060     int i;
3061
3062     TRACE("(%p)->(%d, %p)\n", session, count, levels);
3063
3064     if(!levels)
3065         return NULL_PTR_ERR;
3066
3067     if(count != session->channel_count)
3068         return E_INVALIDARG;
3069
3070     for(i = 0; i < count; ++i)
3071         levels[i] = session->channel_vols[i];
3072
3073     return S_OK;
3074 }
3075
3076 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl =
3077 {
3078     ChannelAudioVolume_QueryInterface,
3079     ChannelAudioVolume_AddRef,
3080     ChannelAudioVolume_Release,
3081     ChannelAudioVolume_GetChannelCount,
3082     ChannelAudioVolume_SetChannelVolume,
3083     ChannelAudioVolume_GetChannelVolume,
3084     ChannelAudioVolume_SetAllVolumes,
3085     ChannelAudioVolume_GetAllVolumes
3086 };
3087
3088 static HRESULT WINAPI AudioSessionManager_QueryInterface(IAudioSessionManager2 *iface,
3089         REFIID riid, void **ppv)
3090 {
3091     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3092
3093     if(!ppv)
3094         return E_POINTER;
3095     *ppv = NULL;
3096
3097     if(IsEqualIID(riid, &IID_IUnknown) ||
3098             IsEqualIID(riid, &IID_IAudioSessionManager) ||
3099             IsEqualIID(riid, &IID_IAudioSessionManager2))
3100         *ppv = iface;
3101     if(*ppv){
3102         IUnknown_AddRef((IUnknown*)*ppv);
3103         return S_OK;
3104     }
3105
3106     WARN("Unknown interface %s\n", debugstr_guid(riid));
3107     return E_NOINTERFACE;
3108 }
3109
3110 static ULONG WINAPI AudioSessionManager_AddRef(IAudioSessionManager2 *iface)
3111 {
3112     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3113     ULONG ref;
3114     ref = InterlockedIncrement(&This->ref);
3115     TRACE("(%p) Refcount now %u\n", This, ref);
3116     return ref;
3117 }
3118
3119 static ULONG WINAPI AudioSessionManager_Release(IAudioSessionManager2 *iface)
3120 {
3121     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3122     ULONG ref;
3123     ref = InterlockedDecrement(&This->ref);
3124     TRACE("(%p) Refcount now %u\n", This, ref);
3125     if(!ref)
3126         HeapFree(GetProcessHeap(), 0, This);
3127     return ref;
3128 }
3129
3130 static HRESULT WINAPI AudioSessionManager_GetAudioSessionControl(
3131         IAudioSessionManager2 *iface, const GUID *session_guid, DWORD flags,
3132         IAudioSessionControl **out)
3133 {
3134     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3135     AudioSession *session;
3136     AudioSessionWrapper *wrapper;
3137     HRESULT hr;
3138
3139     TRACE("(%p)->(%s, %x, %p)\n", This, debugstr_guid(session_guid),
3140             flags, out);
3141
3142     hr = get_audio_session(session_guid, This->device, 0, &session);
3143     if(FAILED(hr))
3144         return hr;
3145
3146     wrapper = AudioSessionWrapper_Create(NULL);
3147     if(!wrapper)
3148         return E_OUTOFMEMORY;
3149
3150     wrapper->session = session;
3151
3152     *out = (IAudioSessionControl*)&wrapper->IAudioSessionControl2_iface;
3153
3154     return S_OK;
3155 }
3156
3157 static HRESULT WINAPI AudioSessionManager_GetSimpleAudioVolume(
3158         IAudioSessionManager2 *iface, const GUID *session_guid, DWORD flags,
3159         ISimpleAudioVolume **out)
3160 {
3161     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3162     AudioSession *session;
3163     AudioSessionWrapper *wrapper;
3164     HRESULT hr;
3165
3166     TRACE("(%p)->(%s, %x, %p)\n", This, debugstr_guid(session_guid),
3167             flags, out);
3168
3169     hr = get_audio_session(session_guid, This->device, 0, &session);
3170     if(FAILED(hr))
3171         return hr;
3172
3173     wrapper = AudioSessionWrapper_Create(NULL);
3174     if(!wrapper)
3175         return E_OUTOFMEMORY;
3176
3177     wrapper->session = session;
3178
3179     *out = &wrapper->ISimpleAudioVolume_iface;
3180
3181     return S_OK;
3182 }
3183
3184 static HRESULT WINAPI AudioSessionManager_GetSessionEnumerator(
3185         IAudioSessionManager2 *iface, IAudioSessionEnumerator **out)
3186 {
3187     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3188     FIXME("(%p)->(%p) - stub\n", This, out);
3189     return E_NOTIMPL;
3190 }
3191
3192 static HRESULT WINAPI AudioSessionManager_RegisterSessionNotification(
3193         IAudioSessionManager2 *iface, IAudioSessionNotification *notification)
3194 {
3195     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3196     FIXME("(%p)->(%p) - stub\n", This, notification);
3197     return E_NOTIMPL;
3198 }
3199
3200 static HRESULT WINAPI AudioSessionManager_UnregisterSessionNotification(
3201         IAudioSessionManager2 *iface, IAudioSessionNotification *notification)
3202 {
3203     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3204     FIXME("(%p)->(%p) - stub\n", This, notification);
3205     return E_NOTIMPL;
3206 }
3207
3208 static HRESULT WINAPI AudioSessionManager_RegisterDuckNotification(
3209         IAudioSessionManager2 *iface, const WCHAR *session_id,
3210         IAudioVolumeDuckNotification *notification)
3211 {
3212     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3213     FIXME("(%p)->(%p) - stub\n", This, notification);
3214     return E_NOTIMPL;
3215 }
3216
3217 static HRESULT WINAPI AudioSessionManager_UnregisterDuckNotification(
3218         IAudioSessionManager2 *iface,
3219         IAudioVolumeDuckNotification *notification)
3220 {
3221     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3222     FIXME("(%p)->(%p) - stub\n", This, notification);
3223     return E_NOTIMPL;
3224 }
3225
3226 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl =
3227 {
3228     AudioSessionManager_QueryInterface,
3229     AudioSessionManager_AddRef,
3230     AudioSessionManager_Release,
3231     AudioSessionManager_GetAudioSessionControl,
3232     AudioSessionManager_GetSimpleAudioVolume,
3233     AudioSessionManager_GetSessionEnumerator,
3234     AudioSessionManager_RegisterSessionNotification,
3235     AudioSessionManager_UnregisterSessionNotification,
3236     AudioSessionManager_RegisterDuckNotification,
3237     AudioSessionManager_UnregisterDuckNotification
3238 };
3239
3240 HRESULT WINAPI AUDDRV_GetAudioSessionManager(IMMDevice *device,
3241         IAudioSessionManager2 **out)
3242 {
3243     SessionMgr *This;
3244
3245     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(SessionMgr));
3246     if(!This)
3247         return E_OUTOFMEMORY;
3248
3249     This->IAudioSessionManager2_iface.lpVtbl = &AudioSessionManager2_Vtbl;
3250     This->device = device;
3251     This->ref = 1;
3252
3253     *out = &This->IAudioSessionManager2_iface;
3254
3255     return S_OK;
3256 }