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, alsa_period_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, last_pos_frames;
 113     UINT32 bufsize_frames, held_frames, tmp_buffer_frames, mmdev_period_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     const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)fmt;
 812     unsigned int rate, alsa_period_us;
 813     int err, i;
 814     HRESULT hr = S_OK;
 815
 816     TRACE("(%p)->(%x, %x, %s, %s, %p, %s)\n", This, mode, flags,
 817           wine_dbgstr_longlong(duration), wine_dbgstr_longlong(period), fmt, debugstr_guid(sessionguid));
 818
 819     if(!fmt)
 820         return E_POINTER;
 821
 822     if(mode != AUDCLNT_SHAREMODE_SHARED && mode != AUDCLNT_SHAREMODE_EXCLUSIVE)
 823         return AUDCLNT_E_NOT_INITIALIZED;
 824
 825     if(flags & ~(AUDCLNT_STREAMFLAGS_CROSSPROCESS |
 826                 AUDCLNT_STREAMFLAGS_LOOPBACK |
 827                 AUDCLNT_STREAMFLAGS_EVENTCALLBACK |
 828                 AUDCLNT_STREAMFLAGS_NOPERSIST |
 829                 AUDCLNT_STREAMFLAGS_RATEADJUST |
 830                 AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED |
 831                 AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE |
 832                 AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED)){
 833         TRACE("Unknown flags: %08x\n", flags);
 834         return E_INVALIDARG;
 835     }
 836
 837     if(mode == AUDCLNT_SHAREMODE_SHARED){
 838         period = DefaultPeriod;
 839         if( duration < 3 * period)
 840             duration = 3 * period;
 841     }else{
 842         if(!period)
 843             period = DefaultPeriod; /* not minimum */
 844         if(period < MinimumPeriod || period > 5000000)
 845             return AUDCLNT_E_INVALID_DEVICE_PERIOD;
 846         if(duration > 20000000) /* the smaller the period, the lower this limit */
 847             return AUDCLNT_E_BUFFER_SIZE_ERROR;
 848         if(flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK){
 849             if(duration != period)
 850                 return AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL;
 851             FIXME("EXCLUSIVE mode with EVENTCALLBACK\n");
 852             return AUDCLNT_E_DEVICE_IN_USE;
 853         }else{
 854             if( duration < 8 * period)
 855                 duration = 8 * period; /* may grow above 2s */
 856         }
 857     }
 858
 859     EnterCriticalSection(&This->lock);
 860
 861     if(This->initted){
 862         LeaveCriticalSection(&This->lock);
 863         return AUDCLNT_E_ALREADY_INITIALIZED;
 864     }
 865
 866     dump_fmt(fmt);
 867
 868     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
 869         WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
 870         hr = E_FAIL;
 871         goto exit;
 872     }
 873
 874     if((err = snd_pcm_hw_params_set_access(This->pcm_handle, This->hw_params,
 875                 SND_PCM_ACCESS_RW_INTERLEAVED)) < 0){
 876         WARN("Unable to set access: %d (%s)\n", err, snd_strerror(err));
 877         hr = E_FAIL;
 878         goto exit;
 879     }
 880
 881     if(fmt->wFormatTag == WAVE_FORMAT_PCM ||
 882             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
 883              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))){
 884         if(fmt->wBitsPerSample == 8)
 885             format = SND_PCM_FORMAT_U8;
 886         else if(fmt->wBitsPerSample == 16)
 887             format = SND_PCM_FORMAT_S16_LE;
 888         else if(fmt->wBitsPerSample == 24)
 889             format = SND_PCM_FORMAT_S24_3LE;
 890         else if(fmt->wBitsPerSample == 32)
 891             format = SND_PCM_FORMAT_S32_LE;
 892         else{
 893             WARN("Unsupported bit depth: %u\n", fmt->wBitsPerSample);
 894             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 895             goto exit;
 896         }
 897     }else if(fmt->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
 898             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
 899              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))){
 900         if(fmt->wBitsPerSample == 32)
 901             format = SND_PCM_FORMAT_FLOAT_LE;
 902         else if(fmt->wBitsPerSample == 64)
 903             format = SND_PCM_FORMAT_FLOAT64_LE;
 904         else{
 905             WARN("Unsupported float size: %u\n", fmt->wBitsPerSample);
 906             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 907             goto exit;
 908         }
 909     }else{
 910         WARN("Unknown wave format: %04x\n", fmt->wFormatTag);
 911         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
 912         goto exit;
 913     }
 914
 915     if((err = snd_pcm_hw_params_set_format(This->pcm_handle, This->hw_params,
 916                 format)) < 0){
 917         WARN("Unable to set ALSA format to %u: %d (%s)\n", format, err,
 918                 snd_strerror(err));
 919         hr = E_FAIL;
 920         goto exit;
 921     }
 922
 923     This->alsa_format = format;
 924
 925     rate = fmt->nSamplesPerSec;
 926     if((err = snd_pcm_hw_params_set_rate_near(This->pcm_handle, This->hw_params,
 927                 &rate, NULL)) < 0){
 928         WARN("Unable to set rate to %u: %d (%s)\n", rate, err,
 929                 snd_strerror(err));
 930         hr = E_FAIL;
 931         goto exit;
 932     }
 933
 934     if((err = snd_pcm_hw_params_set_channels(This->pcm_handle, This->hw_params,
 935                 fmt->nChannels)) < 0){
 936         WARN("Unable to set channels to %u: %d (%s)\n", fmt->nChannels, err,
 937                 snd_strerror(err));
 938         hr = E_FAIL;
 939         goto exit;
 940     }
 941
 942     This->mmdev_period_rt = period;
 943     alsa_period_us = This->mmdev_period_rt / 10;
 944     if((err = snd_pcm_hw_params_set_period_time_near(This->pcm_handle,
 945                 This->hw_params, &alsa_period_us, NULL)) < 0)
 946         WARN("Unable to set period time near %u: %d (%s)\n", alsa_period_us,
 947                 err, snd_strerror(err));
 948
 949     if((err = snd_pcm_hw_params(This->pcm_handle, This->hw_params)) < 0){
 950         WARN("Unable to set hw params: %d (%s)\n", err, snd_strerror(err));
 951         hr = E_FAIL;
 952         goto exit;
 953     }
 954
 955     if((err = snd_pcm_hw_params_get_period_size(This->hw_params,
 956                     &This->alsa_period_frames, NULL)) < 0){
 957         WARN("Unable to get period size: %d (%s)\n", err, snd_strerror(err));
 958         hr = E_FAIL;
 959         goto exit;
 960     }
 961
 962     if((err = snd_pcm_hw_params_get_buffer_size(This->hw_params,
 963                     &This->alsa_bufsize_frames)) < 0){
 964         WARN("Unable to get buffer size: %d (%s)\n", err, snd_strerror(err));
 965         hr = E_FAIL;
 966         goto exit;
 967     }
 968
 969     sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
 970     if(!sw_params){
 971         hr = E_OUTOFMEMORY;
 972         goto exit;
 973     }
 974
 975     if((err = snd_pcm_sw_params_current(This->pcm_handle, sw_params)) < 0){
 976         WARN("Unable to get sw_params: %d (%s)\n", err, snd_strerror(err));
 977         hr = E_FAIL;
 978         goto exit;
 979     }
 980
 981     if((err = snd_pcm_sw_params_set_start_threshold(This->pcm_handle,
 982                     sw_params, 1)) < 0){
 983         WARN("Unable set start threshold to 0: %d (%s)\n", err, snd_strerror(err));
 984         hr = E_FAIL;
 985         goto exit;
 986     }
 987
 988     if((err = snd_pcm_sw_params_set_stop_threshold(This->pcm_handle,
 989                     sw_params, This->alsa_bufsize_frames)) < 0){
 990         WARN("Unable set stop threshold to %lu: %d (%s)\n",
 991                 This->alsa_bufsize_frames, err, snd_strerror(err));
 992         hr = E_FAIL;
 993         goto exit;
 994     }
 995
 996     if((err = snd_pcm_sw_params(This->pcm_handle, sw_params)) < 0){
 997         WARN("Unable set sw params: %d (%s)\n", err, snd_strerror(err));
 998         hr = E_FAIL;
 999         goto exit;
1000     }
1001
1002     if((err = snd_pcm_prepare(This->pcm_handle)) < 0){
1003         WARN("Unable to prepare device: %d (%s)\n", err, snd_strerror(err));
1004         hr = E_FAIL;
1005         goto exit;
1006     }
1007
1008     /* Check if the ALSA buffer is so small that it will run out before
1009      * the next MMDevAPI period tick occurs. Allow a little wiggle room
1010      * with 120% of the period time. */
1011     This->mmdev_period_frames = (fmt->nSamplesPerSec * This->mmdev_period_rt) / 10000000.;
1012     if(This->alsa_bufsize_frames < 1.2 * This->mmdev_period_frames)
1013         FIXME("ALSA buffer time is smaller than our period time. Expect underruns. (%lu < %u)\n",
1014                 This->alsa_bufsize_frames, This->mmdev_period_frames);
1015
1016     This->bufsize_frames = ceil((duration / 10000000.) * fmt->nSamplesPerSec);
1017     This->local_buffer = HeapAlloc(GetProcessHeap(), 0,
1018             This->bufsize_frames * fmt->nBlockAlign);
1019     if(!This->local_buffer){
1020         hr = E_OUTOFMEMORY;
1021         goto exit;
1022     }
1023     if (fmt->wBitsPerSample == 8)
1024         memset(This->local_buffer, 128, This->bufsize_frames * fmt->nBlockAlign);
1025     else
1026         memset(This->local_buffer, 0, This->bufsize_frames * fmt->nBlockAlign);
1027
1028     This->fmt = clone_format(fmt);
1029     if(!This->fmt){
1030         hr = E_OUTOFMEMORY;
1031         goto exit;
1032     }
1033
1034     This->vols = HeapAlloc(GetProcessHeap(), 0, fmt->nChannels * sizeof(float));
1035     if(!This->vols){
1036         hr = E_OUTOFMEMORY;
1037         goto exit;
1038     }
1039
1040     for(i = 0; i < fmt->nChannels; ++i)
1041         This->vols[i] = 1.f;
1042
1043     This->share = mode;
1044     This->flags = flags;
1045
1046     EnterCriticalSection(&g_sessions_lock);
1047
1048     hr = get_audio_session(sessionguid, This->parent, fmt->nChannels,
1049             &This->session);
1050     if(FAILED(hr)){
1051         LeaveCriticalSection(&g_sessions_lock);
1052         goto exit;
1053     }
1054
1055     list_add_tail(&This->session->clients, &This->entry);
1056
1057     LeaveCriticalSection(&g_sessions_lock);
1058
1059     This->initted = TRUE;
1060
1061     TRACE("ALSA period: %lu frames\n", This->alsa_period_frames);
1062     TRACE("ALSA buffer: %lu frames\n", This->alsa_bufsize_frames);
1063     TRACE("MMDevice period: %u frames\n", This->mmdev_period_frames);
1064     TRACE("MMDevice buffer: %u frames\n", This->bufsize_frames);
1065
1066 exit:
1067     HeapFree(GetProcessHeap(), 0, sw_params);
1068     if(FAILED(hr)){
1069         HeapFree(GetProcessHeap(), 0, This->local_buffer);
1070         This->local_buffer = NULL;
1071         CoTaskMemFree(This->fmt);
1072         This->fmt = NULL;
1073         HeapFree(GetProcessHeap(), 0, This->vols);
1074         This->vols = NULL;
1075     }
1076
1077     LeaveCriticalSection(&This->lock);
1078
1079     return hr;
1080 }
1081
1082 static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient *iface,
1083         UINT32 *out)
1084 {
1085     ACImpl *This = impl_from_IAudioClient(iface);
1086
1087     TRACE("(%p)->(%p)\n", This, out);
1088
1089     if(!out)
1090         return E_POINTER;
1091
1092     EnterCriticalSection(&This->lock);
1093
1094     if(!This->initted){
1095         LeaveCriticalSection(&This->lock);
1096         return AUDCLNT_E_NOT_INITIALIZED;
1097     }
1098
1099     *out = This->bufsize_frames;
1100
1101     LeaveCriticalSection(&This->lock);
1102
1103     return S_OK;
1104 }
1105
1106 static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient *iface,
1107         REFERENCE_TIME *latency)
1108 {
1109     ACImpl *This = impl_from_IAudioClient(iface);
1110
1111     TRACE("(%p)->(%p)\n", This, latency);
1112
1113     if(!latency)
1114         return E_POINTER;
1115
1116     EnterCriticalSection(&This->lock);
1117
1118     if(!This->initted){
1119         LeaveCriticalSection(&This->lock);
1120         return AUDCLNT_E_NOT_INITIALIZED;
1121     }
1122
1123     LeaveCriticalSection(&This->lock);
1124
1125     *latency = 500000;
1126
1127     return S_OK;
1128 }
1129
1130 static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient *iface,
1131         UINT32 *out)
1132 {
1133     ACImpl *This = impl_from_IAudioClient(iface);
1134
1135     TRACE("(%p)->(%p)\n", This, out);
1136
1137     if(!out)
1138         return E_POINTER;
1139
1140     EnterCriticalSection(&This->lock);
1141
1142     if(!This->initted){
1143         LeaveCriticalSection(&This->lock);
1144         return AUDCLNT_E_NOT_INITIALIZED;
1145     }
1146
1147     *out = This->held_frames;
1148
1149     /* call required to get accurate snd_pcm_state() */
1150     snd_pcm_avail_update(This->pcm_handle);
1151     TRACE("pad: %u, state: %u\n", *out, snd_pcm_state(This->pcm_handle));
1152
1153     LeaveCriticalSection(&This->lock);
1154
1155     return S_OK;
1156 }
1157
1158 static DWORD get_channel_mask(unsigned int channels)
1159 {
1160     switch(channels){
1161     case 0:
1162         return 0;
1163     case 1:
1164         return KSAUDIO_SPEAKER_MONO;
1165     case 2:
1166         return KSAUDIO_SPEAKER_STEREO;
1167     case 3:
1168         return KSAUDIO_SPEAKER_STEREO | SPEAKER_LOW_FREQUENCY;
1169     case 4:
1170         return KSAUDIO_SPEAKER_QUAD;    /* not _SURROUND */
1171     case 5:
1172         return KSAUDIO_SPEAKER_QUAD | SPEAKER_LOW_FREQUENCY;
1173     case 6:
1174         return KSAUDIO_SPEAKER_5POINT1; /* not 5POINT1_SURROUND */
1175     case 7:
1176         return KSAUDIO_SPEAKER_5POINT1 | SPEAKER_BACK_CENTER;
1177     case 8:
1178         return KSAUDIO_SPEAKER_7POINT1; /* not 7POINT1_SURROUND */
1179     }
1180     FIXME("Unknown speaker configuration: %u\n", channels);
1181     return 0;
1182 }
1183
1184 static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient *iface,
1185         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *fmt,
1186         WAVEFORMATEX **out)
1187 {
1188     ACImpl *This = impl_from_IAudioClient(iface);
1189     snd_pcm_format_mask_t *formats = NULL;
1190     HRESULT hr = S_OK;
1191     WAVEFORMATEX *closest = NULL;
1192     const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)fmt;
1193     unsigned int max = 0, min = 0;
1194     int err;
1195
1196     TRACE("(%p)->(%x, %p, %p)\n", This, mode, fmt, out);
1197
1198     if(!fmt || (mode == AUDCLNT_SHAREMODE_SHARED && !out))
1199         return E_POINTER;
1200
1201     if(mode != AUDCLNT_SHAREMODE_SHARED && mode != AUDCLNT_SHAREMODE_EXCLUSIVE)
1202         return E_INVALIDARG;
1203
1204     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1205             fmt->cbSize < sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX))
1206         return E_INVALIDARG;
1207
1208     dump_fmt(fmt);
1209
1210     if(out){
1211         *out = NULL;
1212         if(mode != AUDCLNT_SHAREMODE_SHARED)
1213             out = NULL;
1214     }
1215
1216     EnterCriticalSection(&This->lock);
1217
1218     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1219         hr = E_FAIL;
1220         goto exit;
1221     }
1222
1223     formats = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1224             snd_pcm_format_mask_sizeof());
1225     if(!formats){
1226         hr = E_OUTOFMEMORY;
1227         goto exit;
1228     }
1229
1230     snd_pcm_hw_params_get_format_mask(This->hw_params, formats);
1231
1232     if(fmt->wFormatTag == WAVE_FORMAT_PCM ||
1233             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1234              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))){
1235         switch(fmt->wBitsPerSample){
1236         case 8:
1237             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_U8)){
1238                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1239                 goto exit;
1240             }
1241             break;
1242         case 16:
1243             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S16_LE)){
1244                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1245                 goto exit;
1246             }
1247             break;
1248         case 24:
1249             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S24_3LE)){
1250                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1251                 goto exit;
1252             }
1253             break;
1254         case 32:
1255             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S32_LE)){
1256                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1257                 goto exit;
1258             }
1259             break;
1260         default:
1261             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1262             goto exit;
1263         }
1264     }else if(fmt->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
1265             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1266              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))){
1267         switch(fmt->wBitsPerSample){
1268         case 32:
1269             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT_LE)){
1270                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1271                 goto exit;
1272             }
1273             break;
1274         case 64:
1275             if(!snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT64_LE)){
1276                 hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1277                 goto exit;
1278             }
1279             break;
1280         default:
1281             hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1282             goto exit;
1283         }
1284     }else{
1285         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1286         goto exit;
1287     }
1288
1289     closest = clone_format(fmt);
1290     if(!closest){
1291         hr = E_OUTOFMEMORY;
1292         goto exit;
1293     }
1294
1295     if((err = snd_pcm_hw_params_get_rate_min(This->hw_params, &min, NULL)) < 0){
1296         hr = E_FAIL;
1297         WARN("Unable to get min rate: %d (%s)\n", err, snd_strerror(err));
1298         goto exit;
1299     }
1300
1301     if((err = snd_pcm_hw_params_get_rate_max(This->hw_params, &max, NULL)) < 0){
1302         hr = E_FAIL;
1303         WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
1304         goto exit;
1305     }
1306
1307     if(fmt->nSamplesPerSec < min || fmt->nSamplesPerSec > max){
1308         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1309         goto exit;
1310     }
1311
1312     if((err = snd_pcm_hw_params_get_channels_min(This->hw_params, &min)) < 0){
1313         hr = E_FAIL;
1314         WARN("Unable to get min channels: %d (%s)\n", err, snd_strerror(err));
1315         goto exit;
1316     }
1317
1318     if((err = snd_pcm_hw_params_get_channels_max(This->hw_params, &max)) < 0){
1319         hr = E_FAIL;
1320         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
1321         goto exit;
1322     }
1323     if(max > 8)
1324         max = 2;
1325     if(fmt->nChannels > max){
1326         hr = S_FALSE;
1327         closest->nChannels = max;
1328     }else if(fmt->nChannels < min){
1329         hr = S_FALSE;
1330         closest->nChannels = min;
1331     }
1332
1333     if(closest->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
1334         DWORD mask = get_channel_mask(closest->nChannels);
1335
1336         ((WAVEFORMATEXTENSIBLE*)closest)->dwChannelMask = mask;
1337
1338         if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1339                 fmtex->dwChannelMask != 0 &&
1340                 fmtex->dwChannelMask != mask)
1341             hr = S_FALSE;
1342     }
1343
1344 exit:
1345     LeaveCriticalSection(&This->lock);
1346     HeapFree(GetProcessHeap(), 0, formats);
1347
1348     if(hr == S_FALSE && !out)
1349         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1350
1351     if(hr == S_FALSE && out) {
1352         closest->nBlockAlign =
1353             closest->nChannels * closest->wBitsPerSample / 8;
1354         closest->nAvgBytesPerSec =
1355             closest->nBlockAlign * closest->nSamplesPerSec;
1356         *out = closest;
1357     } else
1358         CoTaskMemFree(closest);
1359
1360     TRACE("returning: %08x\n", hr);
1361     return hr;
1362 }
1363
1364 static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient *iface,
1365         WAVEFORMATEX **pwfx)
1366 {
1367     ACImpl *This = impl_from_IAudioClient(iface);
1368     WAVEFORMATEXTENSIBLE *fmt;
1369     snd_pcm_format_mask_t *formats;
1370     unsigned int max_rate, max_channels;
1371     int err;
1372     HRESULT hr = S_OK;
1373
1374     TRACE("(%p)->(%p)\n", This, pwfx);
1375
1376     if(!pwfx)
1377         return E_POINTER;
1378     *pwfx = NULL;
1379
1380     fmt = CoTaskMemAlloc(sizeof(WAVEFORMATEXTENSIBLE));
1381     if(!fmt)
1382         return E_OUTOFMEMORY;
1383
1384     formats = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof());
1385     if(!formats){
1386         CoTaskMemFree(fmt);
1387         return E_OUTOFMEMORY;
1388     }
1389
1390     EnterCriticalSection(&This->lock);
1391
1392     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1393         WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
1394         hr = E_FAIL;
1395         goto exit;
1396     }
1397
1398     snd_pcm_hw_params_get_format_mask(This->hw_params, formats);
1399
1400     fmt->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
1401     if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT_LE)){
1402         fmt->Format.wBitsPerSample = 32;
1403         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
1404     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S16_LE)){
1405         fmt->Format.wBitsPerSample = 16;
1406         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1407     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_U8)){
1408         fmt->Format.wBitsPerSample = 8;
1409         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1410     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S32_LE)){
1411         fmt->Format.wBitsPerSample = 32;
1412         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1413     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S24_3LE)){
1414         fmt->Format.wBitsPerSample = 24;
1415         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1416     }else{
1417         ERR("Didn't recognize any available ALSA formats\n");
1418         hr = E_FAIL;
1419         goto exit;
1420     }
1421
1422     if((err = snd_pcm_hw_params_get_channels_max(This->hw_params,
1423                     &max_channels)) < 0){
1424         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
1425         hr = E_FAIL;
1426         goto exit;
1427     }
1428
1429     if(max_channels > 2){
1430         FIXME("Don't know what to do with %u channels, pretending there's "
1431                 "only 2 channels\n", max_channels);
1432         fmt->Format.nChannels = 2;
1433     }else
1434         fmt->Format.nChannels = max_channels;
1435
1436     fmt->dwChannelMask = get_channel_mask(fmt->Format.nChannels);
1437
1438     if((err = snd_pcm_hw_params_get_rate_max(This->hw_params, &max_rate,
1439                     NULL)) < 0){
1440         WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
1441         hr = E_FAIL;
1442         goto exit;
1443     }
1444
1445     if(max_rate >= 48000)
1446         fmt->Format.nSamplesPerSec = 48000;
1447     else if(max_rate >= 44100)
1448         fmt->Format.nSamplesPerSec = 44100;
1449     else if(max_rate >= 22050)
1450         fmt->Format.nSamplesPerSec = 22050;
1451     else if(max_rate >= 11025)
1452         fmt->Format.nSamplesPerSec = 11025;
1453     else if(max_rate >= 8000)
1454         fmt->Format.nSamplesPerSec = 8000;
1455     else{
1456         ERR("Unknown max rate: %u\n", max_rate);
1457         hr = E_FAIL;
1458         goto exit;
1459     }
1460
1461     fmt->Format.nBlockAlign = (fmt->Format.wBitsPerSample *
1462             fmt->Format.nChannels) / 8;
1463     fmt->Format.nAvgBytesPerSec = fmt->Format.nSamplesPerSec *
1464         fmt->Format.nBlockAlign;
1465
1466     fmt->Samples.wValidBitsPerSample = fmt->Format.wBitsPerSample;
1467     fmt->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
1468
1469     dump_fmt((WAVEFORMATEX*)fmt);
1470     *pwfx = (WAVEFORMATEX*)fmt;
1471
1472 exit:
1473     LeaveCriticalSection(&This->lock);
1474     if(FAILED(hr))
1475         CoTaskMemFree(fmt);
1476     HeapFree(GetProcessHeap(), 0, formats);
1477
1478     return hr;
1479 }
1480
1481 static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient *iface,
1482         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
1483 {
1484     ACImpl *This = impl_from_IAudioClient(iface);
1485
1486     TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);
1487
1488     if(!defperiod && !minperiod)
1489         return E_POINTER;
1490
1491     if(defperiod)
1492         *defperiod = DefaultPeriod;
1493     if(minperiod)
1494         *minperiod = MinimumPeriod;
1495
1496     return S_OK;
1497 }
1498
1499 static snd_pcm_sframes_t alsa_write_best_effort(snd_pcm_t *handle, BYTE *buf,
1500         snd_pcm_uframes_t frames, ACImpl *This)
1501 {
1502     snd_pcm_sframes_t written;
1503
1504     if(This->session->mute){
1505         int err;
1506         if((err = snd_pcm_format_set_silence(This->alsa_format, buf,
1507                         frames * This->fmt->nChannels)) < 0)
1508             WARN("Setting buffer to silence failed: %d (%s)\n", err,
1509                     snd_strerror(err));
1510     }
1511
1512     written = snd_pcm_writei(handle, buf, frames);
1513     if(written < 0){
1514         int ret;
1515
1516         if(written == -EAGAIN)
1517             /* buffer full */
1518             return 0;
1519
1520         WARN("writei failed, recovering: %ld (%s)\n", written,
1521                 snd_strerror(written));
1522
1523         ret = snd_pcm_recover(handle, written, 0);
1524         if(ret < 0){
1525             WARN("Could not recover: %d (%s)\n", ret, snd_strerror(ret));
1526             return ret;
1527         }
1528
1529         written = snd_pcm_writei(handle, buf, frames);
1530     }
1531
1532     return written;
1533 }
1534
1535 static void alsa_write_data(ACImpl *This)
1536 {
1537     snd_pcm_sframes_t written;
1538     snd_pcm_uframes_t to_write, avail, write_limit, max_period, in_alsa;
1539     int err;
1540     BYTE *buf =
1541         This->local_buffer + (This->lcl_offs_frames * This->fmt->nBlockAlign);
1542
1543     /* this call seems to be required to get an accurate snd_pcm_state() */
1544     avail = snd_pcm_avail_update(This->pcm_handle);
1545
1546     if(snd_pcm_state(This->pcm_handle) == SND_PCM_STATE_XRUN ||
1547             avail > This->alsa_bufsize_frames){
1548         TRACE("XRun state, recovering\n");
1549
1550         avail = This->alsa_bufsize_frames;
1551
1552         if((err = snd_pcm_recover(This->pcm_handle, -EPIPE, 1)) < 0)
1553             WARN("snd_pcm_recover failed: %d (%s)\n", err, snd_strerror(err));
1554
1555         if((err = snd_pcm_reset(This->pcm_handle)) < 0)
1556             WARN("snd_pcm_reset failed: %d (%s)\n", err, snd_strerror(err));
1557
1558         if((err = snd_pcm_prepare(This->pcm_handle)) < 0)
1559             WARN("snd_pcm_prepare failed: %d (%s)\n", err, snd_strerror(err));
1560     }
1561
1562     if(This->held_frames == 0)
1563         return;
1564
1565     if(This->lcl_offs_frames + This->held_frames > This->bufsize_frames)
1566         to_write = This->bufsize_frames - This->lcl_offs_frames;
1567     else
1568         to_write = This->held_frames;
1569
1570     max_period = max(This->mmdev_period_frames, This->alsa_period_frames);
1571
1572     /* try to keep 3 ALSA periods or 3 MMDevAPI periods in the ALSA buffer and
1573      * no more */
1574     write_limit = 0;
1575     in_alsa = This->alsa_bufsize_frames - avail;
1576     while(in_alsa + write_limit < max_period * 3)
1577         write_limit += max_period;
1578     if(write_limit == 0)
1579         return;
1580
1581     to_write = min(to_write, write_limit);
1582
1583     written = alsa_write_best_effort(This->pcm_handle, buf, to_write, This);
1584     if(written < 0){
1585         WARN("Couldn't write: %ld (%s)\n", written, snd_strerror(written));
1586         return;
1587     }
1588
1589     This->lcl_offs_frames += written;
1590     This->lcl_offs_frames %= This->bufsize_frames;
1591     This->held_frames -= written;
1592
1593     if(written < to_write){
1594         /* ALSA buffer probably full */
1595         return;
1596     }
1597
1598     if(This->held_frames && (written < write_limit)){
1599         /* wrapped and have some data back at the start to write */
1600         written = alsa_write_best_effort(This->pcm_handle, This->local_buffer,
1601                 min(This->held_frames, write_limit - written), This);
1602         if(written < 0){
1603             WARN("Couldn't write: %ld (%s)\n", written, snd_strerror(written));
1604             return;
1605         }
1606
1607         This->lcl_offs_frames += written;
1608         This->lcl_offs_frames %= This->bufsize_frames;
1609         This->held_frames -= written;
1610     }
1611 }
1612
1613 static void alsa_read_data(ACImpl *This)
1614 {
1615     snd_pcm_sframes_t pos, readable, nread;
1616
1617     pos = (This->held_frames + This->lcl_offs_frames) % This->bufsize_frames;
1618     readable = This->bufsize_frames - pos;
1619
1620     nread = snd_pcm_readi(This->pcm_handle,
1621             This->local_buffer + pos * This->fmt->nBlockAlign, readable);
1622     if(nread < 0){
1623         int ret;
1624
1625         WARN("read failed, recovering: %ld (%s)\n", nread, snd_strerror(nread));
1626
1627         ret = snd_pcm_recover(This->pcm_handle, nread, 0);
1628         if(ret < 0){
1629             WARN("Recover failed: %d (%s)\n", ret, snd_strerror(ret));
1630             return;
1631         }
1632
1633         nread = snd_pcm_readi(This->pcm_handle,
1634                 This->local_buffer + pos * This->fmt->nBlockAlign, readable);
1635         if(nread < 0){
1636             WARN("read failed: %ld (%s)\n", nread, snd_strerror(nread));
1637             return;
1638         }
1639     }
1640
1641     if(This->session->mute){
1642         int err;
1643         if((err = snd_pcm_format_set_silence(This->alsa_format,
1644                         This->local_buffer + pos * This->fmt->nBlockAlign,
1645                         nread)) < 0)
1646             WARN("Setting buffer to silence failed: %d (%s)\n", err,
1647                     snd_strerror(err));
1648     }
1649
1650     This->held_frames += nread;
1651
1652     if(This->held_frames > This->bufsize_frames){
1653         WARN("Overflow of unread data\n");
1654         This->lcl_offs_frames += This->held_frames;
1655         This->lcl_offs_frames %= This->bufsize_frames;
1656         This->held_frames = This->bufsize_frames;
1657     }
1658 }
1659
1660 static void CALLBACK alsa_push_buffer_data(void *user, BOOLEAN timer)
1661 {
1662     ACImpl *This = user;
1663
1664     EnterCriticalSection(&This->lock);
1665
1666     if(This->started){
1667         if(This->dataflow == eRender)
1668             alsa_write_data(This);
1669         else if(This->dataflow == eCapture)
1670             alsa_read_data(This);
1671
1672         if(This->event)
1673             SetEvent(This->event);
1674     }
1675
1676     LeaveCriticalSection(&This->lock);
1677 }
1678
1679 static HRESULT WINAPI AudioClient_Start(IAudioClient *iface)
1680 {
1681     ACImpl *This = impl_from_IAudioClient(iface);
1682
1683     TRACE("(%p)\n", This);
1684
1685     EnterCriticalSection(&This->lock);
1686
1687     if(!This->initted){
1688         LeaveCriticalSection(&This->lock);
1689         return AUDCLNT_E_NOT_INITIALIZED;
1690     }
1691
1692     if((This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) && !This->event){
1693         LeaveCriticalSection(&This->lock);
1694         return AUDCLNT_E_EVENTHANDLE_NOT_SET;
1695     }
1696
1697     if(This->started){
1698         LeaveCriticalSection(&This->lock);
1699         return AUDCLNT_E_NOT_STOPPED;
1700     }
1701
1702     if(This->dataflow == eCapture){
1703         /* dump any data that might be leftover in the ALSA capture buffer */
1704         snd_pcm_readi(This->pcm_handle, This->local_buffer,
1705                 This->bufsize_frames);
1706     }
1707
1708     if(!CreateTimerQueueTimer(&This->timer, g_timer_q, alsa_push_buffer_data,
1709             This, 0, This->mmdev_period_rt / 10000, WT_EXECUTEINTIMERTHREAD)){
1710         LeaveCriticalSection(&This->lock);
1711         WARN("Unable to create timer: %u\n", GetLastError());
1712         return E_FAIL;
1713     }
1714
1715     This->started = TRUE;
1716
1717     LeaveCriticalSection(&This->lock);
1718
1719     return S_OK;
1720 }
1721
1722 static HRESULT WINAPI AudioClient_Stop(IAudioClient *iface)
1723 {
1724     ACImpl *This = impl_from_IAudioClient(iface);
1725     HANDLE event;
1726     BOOL wait;
1727
1728     TRACE("(%p)\n", This);
1729
1730     EnterCriticalSection(&This->lock);
1731
1732     if(!This->initted){
1733         LeaveCriticalSection(&This->lock);
1734         return AUDCLNT_E_NOT_INITIALIZED;
1735     }
1736
1737     if(!This->started){
1738         LeaveCriticalSection(&This->lock);
1739         return S_FALSE;
1740     }
1741
1742     if(snd_pcm_drop(This->pcm_handle) < 0)
1743         WARN("snd_pcm_drop failed\n");
1744
1745     if(snd_pcm_reset(This->pcm_handle) < 0)
1746         WARN("snd_pcm_reset failed\n");
1747
1748     if(snd_pcm_prepare(This->pcm_handle) < 0)
1749         WARN("snd_pcm_prepare failed\n");
1750
1751     event = CreateEventW(NULL, TRUE, FALSE, NULL);
1752     wait = !DeleteTimerQueueTimer(g_timer_q, This->timer, event);
1753     if(wait)
1754         WARN("DeleteTimerQueueTimer error %u\n", GetLastError());
1755     wait = wait && GetLastError() == ERROR_IO_PENDING;
1756
1757     This->started = FALSE;
1758
1759     LeaveCriticalSection(&This->lock);
1760
1761     if(event && wait)
1762         WaitForSingleObject(event, INFINITE);
1763     CloseHandle(event);
1764
1765     return S_OK;
1766 }
1767
1768 static HRESULT WINAPI AudioClient_Reset(IAudioClient *iface)
1769 {
1770     ACImpl *This = impl_from_IAudioClient(iface);
1771
1772     TRACE("(%p)\n", This);
1773
1774     EnterCriticalSection(&This->lock);
1775
1776     if(!This->initted){
1777         LeaveCriticalSection(&This->lock);
1778         return AUDCLNT_E_NOT_INITIALIZED;
1779     }
1780
1781     if(This->started){
1782         LeaveCriticalSection(&This->lock);
1783         return AUDCLNT_E_NOT_STOPPED;
1784     }
1785
1786     if(This->buf_state != NOT_LOCKED){
1787         LeaveCriticalSection(&This->lock);
1788         return AUDCLNT_E_BUFFER_OPERATION_PENDING;
1789     }
1790
1791     if(snd_pcm_drop(This->pcm_handle) < 0)
1792         WARN("snd_pcm_drop failed\n");
1793
1794     if(snd_pcm_reset(This->pcm_handle) < 0)
1795         WARN("snd_pcm_reset failed\n");
1796
1797     if(snd_pcm_prepare(This->pcm_handle) < 0)
1798         WARN("snd_pcm_prepare failed\n");
1799
1800     This->last_pos_frames = 0;
1801     This->held_frames = 0;
1802     This->written_frames = 0;
1803     This->lcl_offs_frames = 0;
1804
1805     LeaveCriticalSection(&This->lock);
1806
1807     return S_OK;
1808 }
1809
1810 static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient *iface,
1811         HANDLE event)
1812 {
1813     ACImpl *This = impl_from_IAudioClient(iface);
1814
1815     TRACE("(%p)->(%p)\n", This, event);
1816
1817     if(!event)
1818         return E_INVALIDARG;
1819
1820     EnterCriticalSection(&This->lock);
1821
1822     if(!This->initted){
1823         LeaveCriticalSection(&This->lock);
1824         return AUDCLNT_E_NOT_INITIALIZED;
1825     }
1826
1827     if(!(This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)){
1828         LeaveCriticalSection(&This->lock);
1829         return AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED;
1830     }
1831
1832     This->event = event;
1833
1834     LeaveCriticalSection(&This->lock);
1835
1836     return S_OK;
1837 }
1838
1839 static HRESULT WINAPI AudioClient_GetService(IAudioClient *iface, REFIID riid,
1840         void **ppv)
1841 {
1842     ACImpl *This = impl_from_IAudioClient(iface);
1843
1844     TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);
1845
1846     if(!ppv)
1847         return E_POINTER;
1848     *ppv = NULL;
1849
1850     EnterCriticalSection(&This->lock);
1851
1852     if(!This->initted){
1853         LeaveCriticalSection(&This->lock);
1854         return AUDCLNT_E_NOT_INITIALIZED;
1855     }
1856
1857     if(IsEqualIID(riid, &IID_IAudioRenderClient)){
1858         if(This->dataflow != eRender){
1859             LeaveCriticalSection(&This->lock);
1860             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
1861         }
1862         IAudioRenderClient_AddRef(&This->IAudioRenderClient_iface);
1863         *ppv = &This->IAudioRenderClient_iface;
1864     }else if(IsEqualIID(riid, &IID_IAudioCaptureClient)){
1865         if(This->dataflow != eCapture){
1866             LeaveCriticalSection(&This->lock);
1867             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
1868         }
1869         IAudioCaptureClient_AddRef(&This->IAudioCaptureClient_iface);
1870         *ppv = &This->IAudioCaptureClient_iface;
1871     }else if(IsEqualIID(riid, &IID_IAudioClock)){
1872         IAudioClock_AddRef(&This->IAudioClock_iface);
1873         *ppv = &This->IAudioClock_iface;
1874     }else if(IsEqualIID(riid, &IID_IAudioStreamVolume)){
1875         IAudioStreamVolume_AddRef(&This->IAudioStreamVolume_iface);
1876         *ppv = &This->IAudioStreamVolume_iface;
1877     }else if(IsEqualIID(riid, &IID_IAudioSessionControl)){
1878         if(!This->session_wrapper){
1879             This->session_wrapper = AudioSessionWrapper_Create(This);
1880             if(!This->session_wrapper){
1881                 LeaveCriticalSection(&This->lock);
1882                 return E_OUTOFMEMORY;
1883             }
1884         }else
1885             IAudioSessionControl2_AddRef(&This->session_wrapper->IAudioSessionControl2_iface);
1886
1887         *ppv = &This->session_wrapper->IAudioSessionControl2_iface;
1888     }else if(IsEqualIID(riid, &IID_IChannelAudioVolume)){
1889         if(!This->session_wrapper){
1890             This->session_wrapper = AudioSessionWrapper_Create(This);
1891             if(!This->session_wrapper){
1892                 LeaveCriticalSection(&This->lock);
1893                 return E_OUTOFMEMORY;
1894             }
1895         }else
1896             IChannelAudioVolume_AddRef(&This->session_wrapper->IChannelAudioVolume_iface);
1897
1898         *ppv = &This->session_wrapper->IChannelAudioVolume_iface;
1899     }else if(IsEqualIID(riid, &IID_ISimpleAudioVolume)){
1900         if(!This->session_wrapper){
1901             This->session_wrapper = AudioSessionWrapper_Create(This);
1902             if(!This->session_wrapper){
1903                 LeaveCriticalSection(&This->lock);
1904                 return E_OUTOFMEMORY;
1905             }
1906         }else
1907             ISimpleAudioVolume_AddRef(&This->session_wrapper->ISimpleAudioVolume_iface);
1908
1909         *ppv = &This->session_wrapper->ISimpleAudioVolume_iface;
1910     }
1911
1912     if(*ppv){
1913         LeaveCriticalSection(&This->lock);
1914         return S_OK;
1915     }
1916
1917     LeaveCriticalSection(&This->lock);
1918
1919     FIXME("stub %s\n", debugstr_guid(riid));
1920     return E_NOINTERFACE;
1921 }
1922
1923 static const IAudioClientVtbl AudioClient_Vtbl =
1924 {
1925     AudioClient_QueryInterface,
1926     AudioClient_AddRef,
1927     AudioClient_Release,
1928     AudioClient_Initialize,
1929     AudioClient_GetBufferSize,
1930     AudioClient_GetStreamLatency,
1931     AudioClient_GetCurrentPadding,
1932     AudioClient_IsFormatSupported,
1933     AudioClient_GetMixFormat,
1934     AudioClient_GetDevicePeriod,
1935     AudioClient_Start,
1936     AudioClient_Stop,
1937     AudioClient_Reset,
1938     AudioClient_SetEventHandle,
1939     AudioClient_GetService
1940 };
1941
1942 static HRESULT WINAPI AudioRenderClient_QueryInterface(
1943         IAudioRenderClient *iface, REFIID riid, void **ppv)
1944 {
1945     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
1946
1947     if(!ppv)
1948         return E_POINTER;
1949     *ppv = NULL;
1950
1951     if(IsEqualIID(riid, &IID_IUnknown) ||
1952             IsEqualIID(riid, &IID_IAudioRenderClient))
1953         *ppv = iface;
1954     if(*ppv){
1955         IUnknown_AddRef((IUnknown*)*ppv);
1956         return S_OK;
1957     }
1958
1959     WARN("Unknown interface %s\n", debugstr_guid(riid));
1960     return E_NOINTERFACE;
1961 }
1962
1963 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
1964 {
1965     ACImpl *This = impl_from_IAudioRenderClient(iface);
1966     return AudioClient_AddRef(&This->IAudioClient_iface);
1967 }
1968
1969 static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
1970 {
1971     ACImpl *This = impl_from_IAudioRenderClient(iface);
1972     return AudioClient_Release(&This->IAudioClient_iface);
1973 }
1974
1975 static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
1976         UINT32 frames, BYTE **data)
1977 {
1978     ACImpl *This = impl_from_IAudioRenderClient(iface);
1979     UINT32 write_pos;
1980     UINT32 pad;
1981     HRESULT hr;
1982
1983     TRACE("(%p)->(%u, %p)\n", This, frames, data);
1984
1985     if(!data)
1986         return E_POINTER;
1987
1988     EnterCriticalSection(&This->lock);
1989
1990     if(This->buf_state != NOT_LOCKED){
1991         LeaveCriticalSection(&This->lock);
1992         return AUDCLNT_E_OUT_OF_ORDER;
1993     }
1994
1995     if(!frames){
1996         This->buf_state = LOCKED_NORMAL;
1997         LeaveCriticalSection(&This->lock);
1998         return S_OK;
1999     }
2000
2001     hr = IAudioClient_GetCurrentPadding(&This->IAudioClient_iface, &pad);
2002     if(FAILED(hr)){
2003         LeaveCriticalSection(&This->lock);
2004         return hr;
2005     }
2006
2007     if(pad + frames > This->bufsize_frames){
2008         LeaveCriticalSection(&This->lock);
2009         return AUDCLNT_E_BUFFER_TOO_LARGE;
2010     }
2011
2012     write_pos =
2013         (This->lcl_offs_frames + This->held_frames) % This->bufsize_frames;
2014     if(write_pos + frames > This->bufsize_frames){
2015         if(This->tmp_buffer_frames < frames){
2016             if(This->tmp_buffer)
2017                 This->tmp_buffer = HeapReAlloc(GetProcessHeap(), 0,
2018                         This->tmp_buffer, frames * This->fmt->nBlockAlign);
2019             else
2020                 This->tmp_buffer = HeapAlloc(GetProcessHeap(), 0,
2021                         frames * This->fmt->nBlockAlign);
2022             if(!This->tmp_buffer){
2023                 LeaveCriticalSection(&This->lock);
2024                 return E_OUTOFMEMORY;
2025             }
2026             This->tmp_buffer_frames = frames;
2027         }
2028         *data = This->tmp_buffer;
2029         This->buf_state = LOCKED_WRAPPED;
2030     }else{
2031         *data = This->local_buffer + write_pos * This->fmt->nBlockAlign;
2032         This->buf_state = LOCKED_NORMAL;
2033     }
2034
2035     LeaveCriticalSection(&This->lock);
2036
2037     return S_OK;
2038 }
2039
2040 static void alsa_wrap_buffer(ACImpl *This, BYTE *buffer, UINT32 written_frames)
2041 {
2042     snd_pcm_uframes_t write_offs_frames =
2043         (This->lcl_offs_frames + This->held_frames) % This->bufsize_frames;
2044     UINT32 write_offs_bytes = write_offs_frames * This->fmt->nBlockAlign;
2045     snd_pcm_uframes_t chunk_frames = This->bufsize_frames - write_offs_frames;
2046     UINT32 chunk_bytes = chunk_frames * This->fmt->nBlockAlign;
2047     UINT32 written_bytes = written_frames * This->fmt->nBlockAlign;
2048
2049     if(written_bytes <= chunk_bytes){
2050         memcpy(This->local_buffer + write_offs_bytes, buffer, written_bytes);
2051     }else{
2052         memcpy(This->local_buffer + write_offs_bytes, buffer, chunk_bytes);
2053         memcpy(This->local_buffer, buffer + chunk_bytes,
2054                 written_bytes - chunk_bytes);
2055     }
2056 }
2057
2058 static HRESULT WINAPI AudioRenderClient_ReleaseBuffer(
2059         IAudioRenderClient *iface, UINT32 written_frames, DWORD flags)
2060 {
2061     ACImpl *This = impl_from_IAudioRenderClient(iface);
2062     BYTE *buffer;
2063
2064     TRACE("(%p)->(%u, %x)\n", This, written_frames, flags);
2065
2066     EnterCriticalSection(&This->lock);
2067
2068     if(This->buf_state == NOT_LOCKED || !written_frames){
2069         This->buf_state = NOT_LOCKED;
2070         LeaveCriticalSection(&This->lock);
2071         return written_frames ? AUDCLNT_E_OUT_OF_ORDER : S_OK;
2072     }
2073
2074     if(This->buf_state == LOCKED_NORMAL)
2075         buffer = This->local_buffer + This->fmt->nBlockAlign *
2076           ((This->lcl_offs_frames + This->held_frames) % This->bufsize_frames);
2077     else
2078         buffer = This->tmp_buffer;
2079
2080     if(flags & AUDCLNT_BUFFERFLAGS_SILENT){
2081         if(This->fmt->wBitsPerSample == 8)
2082             memset(buffer, 128, written_frames * This->fmt->nBlockAlign);
2083         else
2084             memset(buffer, 0, written_frames * This->fmt->nBlockAlign);
2085     }
2086
2087     if(This->buf_state == LOCKED_WRAPPED)
2088         alsa_wrap_buffer(This, buffer, written_frames);
2089
2090     This->held_frames += written_frames;
2091     This->written_frames += written_frames;
2092     This->buf_state = NOT_LOCKED;
2093
2094     LeaveCriticalSection(&This->lock);
2095
2096     return S_OK;
2097 }
2098
2099 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl = {
2100     AudioRenderClient_QueryInterface,
2101     AudioRenderClient_AddRef,
2102     AudioRenderClient_Release,
2103     AudioRenderClient_GetBuffer,
2104     AudioRenderClient_ReleaseBuffer
2105 };
2106
2107 static HRESULT WINAPI AudioCaptureClient_QueryInterface(
2108         IAudioCaptureClient *iface, REFIID riid, void **ppv)
2109 {
2110     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2111
2112     if(!ppv)
2113         return E_POINTER;
2114     *ppv = NULL;
2115
2116     if(IsEqualIID(riid, &IID_IUnknown) ||
2117             IsEqualIID(riid, &IID_IAudioCaptureClient))
2118         *ppv = iface;
2119     if(*ppv){
2120         IUnknown_AddRef((IUnknown*)*ppv);
2121         return S_OK;
2122     }
2123
2124     WARN("Unknown interface %s\n", debugstr_guid(riid));
2125     return E_NOINTERFACE;
2126 }
2127
2128 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
2129 {
2130     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2131     return IAudioClient_AddRef(&This->IAudioClient_iface);
2132 }
2133
2134 static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
2135 {
2136     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2137     return IAudioClient_Release(&This->IAudioClient_iface);
2138 }
2139
2140 static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
2141         BYTE **data, UINT32 *frames, DWORD *flags, UINT64 *devpos,
2142         UINT64 *qpcpos)
2143 {
2144     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2145     HRESULT hr;
2146
2147     TRACE("(%p)->(%p, %p, %p, %p, %p)\n", This, data, frames, flags,
2148             devpos, qpcpos);
2149
2150     if(!data || !frames || !flags)
2151         return E_POINTER;
2152
2153     EnterCriticalSection(&This->lock);
2154
2155     if(This->buf_state != NOT_LOCKED){
2156         LeaveCriticalSection(&This->lock);
2157         return AUDCLNT_E_OUT_OF_ORDER;
2158     }
2159
2160     hr = IAudioCaptureClient_GetNextPacketSize(iface, frames);
2161     if(FAILED(hr)){
2162         LeaveCriticalSection(&This->lock);
2163         return hr;
2164     }
2165
2166     *flags = 0;
2167
2168     if(This->lcl_offs_frames + *frames > This->bufsize_frames){
2169         UINT32 chunk_bytes, offs_bytes, frames_bytes;
2170         if(This->tmp_buffer_frames < *frames){
2171             if(This->tmp_buffer)
2172                 This->tmp_buffer = HeapReAlloc(GetProcessHeap(), 0,
2173                         This->tmp_buffer, *frames * This->fmt->nBlockAlign);
2174             else
2175                 This->tmp_buffer = HeapAlloc(GetProcessHeap(), 0,
2176                         *frames * This->fmt->nBlockAlign);
2177             if(!This->tmp_buffer){
2178                 LeaveCriticalSection(&This->lock);
2179                 return E_OUTOFMEMORY;
2180             }
2181             This->tmp_buffer_frames = *frames;
2182         }
2183
2184         *data = This->tmp_buffer;
2185         chunk_bytes = (This->bufsize_frames - This->lcl_offs_frames) *
2186             This->fmt->nBlockAlign;
2187         offs_bytes = This->lcl_offs_frames * This->fmt->nBlockAlign;
2188         frames_bytes = *frames * This->fmt->nBlockAlign;
2189         memcpy(This->tmp_buffer, This->local_buffer + offs_bytes, chunk_bytes);
2190         memcpy(This->tmp_buffer + chunk_bytes, This->local_buffer,
2191                 frames_bytes - chunk_bytes);
2192     }else
2193         *data = This->local_buffer +
2194             This->lcl_offs_frames * This->fmt->nBlockAlign;
2195
2196     This->buf_state = LOCKED_NORMAL;
2197
2198     if(devpos || qpcpos)
2199         IAudioClock_GetPosition(&This->IAudioClock_iface, devpos, qpcpos);
2200
2201     LeaveCriticalSection(&This->lock);
2202
2203     return *frames ? S_OK : AUDCLNT_S_BUFFER_EMPTY;
2204 }
2205
2206 static HRESULT WINAPI AudioCaptureClient_ReleaseBuffer(
2207         IAudioCaptureClient *iface, UINT32 done)
2208 {
2209     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2210
2211     TRACE("(%p)->(%u)\n", This, done);
2212
2213     EnterCriticalSection(&This->lock);
2214
2215     if(This->buf_state == NOT_LOCKED){
2216         LeaveCriticalSection(&This->lock);
2217         return AUDCLNT_E_OUT_OF_ORDER;
2218     }
2219
2220     This->held_frames -= done;
2221     This->lcl_offs_frames += done;
2222     This->lcl_offs_frames %= This->bufsize_frames;
2223
2224     This->buf_state = NOT_LOCKED;
2225
2226     LeaveCriticalSection(&This->lock);
2227
2228     return S_OK;
2229 }
2230
2231 static HRESULT WINAPI AudioCaptureClient_GetNextPacketSize(
2232         IAudioCaptureClient *iface, UINT32 *frames)
2233 {
2234     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2235
2236     TRACE("(%p)->(%p)\n", This, frames);
2237
2238     return AudioClient_GetCurrentPadding(&This->IAudioClient_iface, frames);
2239 }
2240
2241 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl =
2242 {
2243     AudioCaptureClient_QueryInterface,
2244     AudioCaptureClient_AddRef,
2245     AudioCaptureClient_Release,
2246     AudioCaptureClient_GetBuffer,
2247     AudioCaptureClient_ReleaseBuffer,
2248     AudioCaptureClient_GetNextPacketSize
2249 };
2250
2251 static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
2252         REFIID riid, void **ppv)
2253 {
2254     ACImpl *This = impl_from_IAudioClock(iface);
2255
2256     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2257
2258     if(!ppv)
2259         return E_POINTER;
2260     *ppv = NULL;
2261
2262     if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClock))
2263         *ppv = iface;
2264     else if(IsEqualIID(riid, &IID_IAudioClock2))
2265         *ppv = &This->IAudioClock2_iface;
2266     if(*ppv){
2267         IUnknown_AddRef((IUnknown*)*ppv);
2268         return S_OK;
2269     }
2270
2271     WARN("Unknown interface %s\n", debugstr_guid(riid));
2272     return E_NOINTERFACE;
2273 }
2274
2275 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
2276 {
2277     ACImpl *This = impl_from_IAudioClock(iface);
2278     return IAudioClient_AddRef(&This->IAudioClient_iface);
2279 }
2280
2281 static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
2282 {
2283     ACImpl *This = impl_from_IAudioClock(iface);
2284     return IAudioClient_Release(&This->IAudioClient_iface);
2285 }
2286
2287 static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
2288 {
2289     ACImpl *This = impl_from_IAudioClock(iface);
2290
2291     TRACE("(%p)->(%p)\n", This, freq);
2292
2293     *freq = This->fmt->nSamplesPerSec;
2294
2295     return S_OK;
2296 }
2297
2298 static HRESULT WINAPI AudioClock_GetPosition(IAudioClock *iface, UINT64 *pos,
2299         UINT64 *qpctime)
2300 {
2301     ACImpl *This = impl_from_IAudioClock(iface);
2302     UINT64 written_frames, position;
2303     UINT32 held_frames;
2304     int err;
2305     snd_pcm_state_t alsa_state;
2306     snd_pcm_uframes_t avail_frames;
2307     snd_pcm_sframes_t delay_frames;
2308
2309     TRACE("(%p)->(%p, %p)\n", This, pos, qpctime);
2310
2311     if(!pos)
2312         return E_POINTER;
2313
2314     EnterCriticalSection(&This->lock);
2315
2316     /* call required to get accurate snd_pcm_state() */
2317     avail_frames = snd_pcm_avail_update(This->pcm_handle);
2318     alsa_state = snd_pcm_state(This->pcm_handle);
2319     written_frames = This->written_frames;
2320     held_frames = This->held_frames;
2321
2322     err = snd_pcm_delay(This->pcm_handle, &delay_frames);
2323     if(err < 0){
2324         /* old Pulse, shortly after start */
2325         WARN("snd_pcm_delay failed in state %u: %d (%s)\n", alsa_state, err, snd_strerror(err));
2326     }
2327
2328     if(This->dataflow == eRender){
2329         position = written_frames - held_frames; /* maximum */
2330         if(!This->started || alsa_state > SND_PCM_STATE_RUNNING)
2331             ; /* mmdevapi stopped or ALSA underrun: pretend everything was played */
2332         else if(err<0 || delay_frames > position - This->last_pos_frames)
2333             /* Pulse bug: past underrun, despite recovery, avail_frames & delay
2334              * may be larger than alsa_bufsize_frames, as if cumulating frames. */
2335             /* Pulse bug: EIO(-5) shortly after starting: nothing played */
2336             position = This->last_pos_frames;
2337         else if(delay_frames > 0)
2338             position -= delay_frames;
2339     }else
2340         position = written_frames + held_frames;
2341
2342     /* ensure monotic growth */
2343     This->last_pos_frames = position;
2344
2345     LeaveCriticalSection(&This->lock);
2346
2347     TRACE("frames written: %u, held: %u, avail: %ld, delay: %ld state %d, pos: %u\n",
2348           (UINT32)(written_frames%1000000000), held_frames,
2349           avail_frames, delay_frames, alsa_state, (UINT32)(position%1000000000));
2350     *pos = position;
2351
2352     if(qpctime){
2353         LARGE_INTEGER stamp, freq;
2354         QueryPerformanceCounter(&stamp);
2355         QueryPerformanceFrequency(&freq);
2356         *qpctime = (stamp.QuadPart * (INT64)10000000) / freq.QuadPart;
2357     }
2358
2359     return S_OK;
2360 }
2361
2362 static HRESULT WINAPI AudioClock_GetCharacteristics(IAudioClock *iface,
2363         DWORD *chars)
2364 {
2365     ACImpl *This = impl_from_IAudioClock(iface);
2366
2367     TRACE("(%p)->(%p)\n", This, chars);
2368
2369     if(!chars)
2370         return E_POINTER;
2371
2372     *chars = AUDIOCLOCK_CHARACTERISTIC_FIXED_FREQ;
2373
2374     return S_OK;
2375 }
2376
2377 static const IAudioClockVtbl AudioClock_Vtbl =
2378 {
2379     AudioClock_QueryInterface,
2380     AudioClock_AddRef,
2381     AudioClock_Release,
2382     AudioClock_GetFrequency,
2383     AudioClock_GetPosition,
2384     AudioClock_GetCharacteristics
2385 };
2386
2387 static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
2388         REFIID riid, void **ppv)
2389 {
2390     ACImpl *This = impl_from_IAudioClock2(iface);
2391     return IAudioClock_QueryInterface(&This->IAudioClock_iface, riid, ppv);
2392 }
2393
2394 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
2395 {
2396     ACImpl *This = impl_from_IAudioClock2(iface);
2397     return IAudioClient_AddRef(&This->IAudioClient_iface);
2398 }
2399
2400 static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
2401 {
2402     ACImpl *This = impl_from_IAudioClock2(iface);
2403     return IAudioClient_Release(&This->IAudioClient_iface);
2404 }
2405
2406 static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
2407         UINT64 *pos, UINT64 *qpctime)
2408 {
2409     ACImpl *This = impl_from_IAudioClock2(iface);
2410
2411     FIXME("(%p)->(%p, %p)\n", This, pos, qpctime);
2412
2413     return E_NOTIMPL;
2414 }
2415
2416 static const IAudioClock2Vtbl AudioClock2_Vtbl =
2417 {
2418     AudioClock2_QueryInterface,
2419     AudioClock2_AddRef,
2420     AudioClock2_Release,
2421     AudioClock2_GetDevicePosition
2422 };
2423
2424 static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
2425 {
2426     AudioSessionWrapper *ret;
2427
2428     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
2429             sizeof(AudioSessionWrapper));
2430     if(!ret)
2431         return NULL;
2432
2433     ret->IAudioSessionControl2_iface.lpVtbl = &AudioSessionControl2_Vtbl;
2434     ret->ISimpleAudioVolume_iface.lpVtbl = &SimpleAudioVolume_Vtbl;
2435     ret->IChannelAudioVolume_iface.lpVtbl = &ChannelAudioVolume_Vtbl;
2436
2437     ret->ref = 1;
2438
2439     ret->client = client;
2440     if(client){
2441         ret->session = client->session;
2442         AudioClient_AddRef(&client->IAudioClient_iface);
2443     }
2444
2445     return ret;
2446 }
2447
2448 static HRESULT WINAPI AudioSessionControl_QueryInterface(
2449         IAudioSessionControl2 *iface, REFIID riid, void **ppv)
2450 {
2451     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2452
2453     if(!ppv)
2454         return E_POINTER;
2455     *ppv = NULL;
2456
2457     if(IsEqualIID(riid, &IID_IUnknown) ||
2458             IsEqualIID(riid, &IID_IAudioSessionControl) ||
2459             IsEqualIID(riid, &IID_IAudioSessionControl2))
2460         *ppv = iface;
2461     if(*ppv){
2462         IUnknown_AddRef((IUnknown*)*ppv);
2463         return S_OK;
2464     }
2465
2466     WARN("Unknown interface %s\n", debugstr_guid(riid));
2467     return E_NOINTERFACE;
2468 }
2469
2470 static ULONG WINAPI AudioSessionControl_AddRef(IAudioSessionControl2 *iface)
2471 {
2472     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2473     ULONG ref;
2474     ref = InterlockedIncrement(&This->ref);
2475     TRACE("(%p) Refcount now %u\n", This, ref);
2476     return ref;
2477 }
2478
2479 static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
2480 {
2481     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2482     ULONG ref;
2483     ref = InterlockedDecrement(&This->ref);
2484     TRACE("(%p) Refcount now %u\n", This, ref);
2485     if(!ref){
2486         if(This->client){
2487             EnterCriticalSection(&This->client->lock);
2488             This->client->session_wrapper = NULL;
2489             LeaveCriticalSection(&This->client->lock);
2490             AudioClient_Release(&This->client->IAudioClient_iface);
2491         }
2492         HeapFree(GetProcessHeap(), 0, This);
2493     }
2494     return ref;
2495 }
2496
2497 static HRESULT WINAPI AudioSessionControl_GetState(IAudioSessionControl2 *iface,
2498         AudioSessionState *state)
2499 {
2500     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2501     ACImpl *client;
2502
2503     TRACE("(%p)->(%p)\n", This, state);
2504
2505     if(!state)
2506         return NULL_PTR_ERR;
2507
2508     EnterCriticalSection(&g_sessions_lock);
2509
2510     if(list_empty(&This->session->clients)){
2511         *state = AudioSessionStateExpired;
2512         LeaveCriticalSection(&g_sessions_lock);
2513         return S_OK;
2514     }
2515
2516     LIST_FOR_EACH_ENTRY(client, &This->session->clients, ACImpl, entry){
2517         EnterCriticalSection(&client->lock);
2518         if(client->started){
2519             *state = AudioSessionStateActive;
2520             LeaveCriticalSection(&client->lock);
2521             LeaveCriticalSection(&g_sessions_lock);
2522             return S_OK;
2523         }
2524         LeaveCriticalSection(&client->lock);
2525     }
2526
2527     LeaveCriticalSection(&g_sessions_lock);
2528
2529     *state = AudioSessionStateInactive;
2530
2531     return S_OK;
2532 }
2533
2534 static HRESULT WINAPI AudioSessionControl_GetDisplayName(
2535         IAudioSessionControl2 *iface, WCHAR **name)
2536 {
2537     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2538
2539     FIXME("(%p)->(%p) - stub\n", This, name);
2540
2541     return E_NOTIMPL;
2542 }
2543
2544 static HRESULT WINAPI AudioSessionControl_SetDisplayName(
2545         IAudioSessionControl2 *iface, const WCHAR *name, const GUID *session)
2546 {
2547     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2548
2549     FIXME("(%p)->(%p, %s) - stub\n", This, name, debugstr_guid(session));
2550
2551     return E_NOTIMPL;
2552 }
2553
2554 static HRESULT WINAPI AudioSessionControl_GetIconPath(
2555         IAudioSessionControl2 *iface, WCHAR **path)
2556 {
2557     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2558
2559     FIXME("(%p)->(%p) - stub\n", This, path);
2560
2561     return E_NOTIMPL;
2562 }
2563
2564 static HRESULT WINAPI AudioSessionControl_SetIconPath(
2565         IAudioSessionControl2 *iface, const WCHAR *path, const GUID *session)
2566 {
2567     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2568
2569     FIXME("(%p)->(%p, %s) - stub\n", This, path, debugstr_guid(session));
2570
2571     return E_NOTIMPL;
2572 }
2573
2574 static HRESULT WINAPI AudioSessionControl_GetGroupingParam(
2575         IAudioSessionControl2 *iface, GUID *group)
2576 {
2577     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2578
2579     FIXME("(%p)->(%p) - stub\n", This, group);
2580
2581     return E_NOTIMPL;
2582 }
2583
2584 static HRESULT WINAPI AudioSessionControl_SetGroupingParam(
2585         IAudioSessionControl2 *iface, const GUID *group, const GUID *session)
2586 {
2587     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2588
2589     FIXME("(%p)->(%s, %s) - stub\n", This, debugstr_guid(group),
2590             debugstr_guid(session));
2591
2592     return E_NOTIMPL;
2593 }
2594
2595 static HRESULT WINAPI AudioSessionControl_RegisterAudioSessionNotification(
2596         IAudioSessionControl2 *iface, IAudioSessionEvents *events)
2597 {
2598     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2599
2600     FIXME("(%p)->(%p) - stub\n", This, events);
2601
2602     return S_OK;
2603 }
2604
2605 static HRESULT WINAPI AudioSessionControl_UnregisterAudioSessionNotification(
2606         IAudioSessionControl2 *iface, IAudioSessionEvents *events)
2607 {
2608     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2609
2610     FIXME("(%p)->(%p) - stub\n", This, events);
2611
2612     return S_OK;
2613 }
2614
2615 static HRESULT WINAPI AudioSessionControl_GetSessionIdentifier(
2616         IAudioSessionControl2 *iface, WCHAR **id)
2617 {
2618     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2619
2620     FIXME("(%p)->(%p) - stub\n", This, id);
2621
2622     return E_NOTIMPL;
2623 }
2624
2625 static HRESULT WINAPI AudioSessionControl_GetSessionInstanceIdentifier(
2626         IAudioSessionControl2 *iface, WCHAR **id)
2627 {
2628     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2629
2630     FIXME("(%p)->(%p) - stub\n", This, id);
2631
2632     return E_NOTIMPL;
2633 }
2634
2635 static HRESULT WINAPI AudioSessionControl_GetProcessId(
2636         IAudioSessionControl2 *iface, DWORD *pid)
2637 {
2638     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2639
2640     TRACE("(%p)->(%p)\n", This, pid);
2641
2642     if(!pid)
2643         return E_POINTER;
2644
2645     *pid = GetCurrentProcessId();
2646
2647     return S_OK;
2648 }
2649
2650 static HRESULT WINAPI AudioSessionControl_IsSystemSoundsSession(
2651         IAudioSessionControl2 *iface)
2652 {
2653     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2654
2655     TRACE("(%p)\n", This);
2656
2657     return S_FALSE;
2658 }
2659
2660 static HRESULT WINAPI AudioSessionControl_SetDuckingPreference(
2661         IAudioSessionControl2 *iface, BOOL optout)
2662 {
2663     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
2664
2665     TRACE("(%p)->(%d)\n", This, optout);
2666
2667     return S_OK;
2668 }
2669
2670 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl =
2671 {
2672     AudioSessionControl_QueryInterface,
2673     AudioSessionControl_AddRef,
2674     AudioSessionControl_Release,
2675     AudioSessionControl_GetState,
2676     AudioSessionControl_GetDisplayName,
2677     AudioSessionControl_SetDisplayName,
2678     AudioSessionControl_GetIconPath,
2679     AudioSessionControl_SetIconPath,
2680     AudioSessionControl_GetGroupingParam,
2681     AudioSessionControl_SetGroupingParam,
2682     AudioSessionControl_RegisterAudioSessionNotification,
2683     AudioSessionControl_UnregisterAudioSessionNotification,
2684     AudioSessionControl_GetSessionIdentifier,
2685     AudioSessionControl_GetSessionInstanceIdentifier,
2686     AudioSessionControl_GetProcessId,
2687     AudioSessionControl_IsSystemSoundsSession,
2688     AudioSessionControl_SetDuckingPreference
2689 };
2690
2691 static HRESULT WINAPI SimpleAudioVolume_QueryInterface(
2692         ISimpleAudioVolume *iface, REFIID riid, void **ppv)
2693 {
2694     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2695
2696     if(!ppv)
2697         return E_POINTER;
2698     *ppv = NULL;
2699
2700     if(IsEqualIID(riid, &IID_IUnknown) ||
2701             IsEqualIID(riid, &IID_ISimpleAudioVolume))
2702         *ppv = iface;
2703     if(*ppv){
2704         IUnknown_AddRef((IUnknown*)*ppv);
2705         return S_OK;
2706     }
2707
2708     WARN("Unknown interface %s\n", debugstr_guid(riid));
2709     return E_NOINTERFACE;
2710 }
2711
2712 static ULONG WINAPI SimpleAudioVolume_AddRef(ISimpleAudioVolume *iface)
2713 {
2714     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2715     return AudioSessionControl_AddRef(&This->IAudioSessionControl2_iface);
2716 }
2717
2718 static ULONG WINAPI SimpleAudioVolume_Release(ISimpleAudioVolume *iface)
2719 {
2720     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2721     return AudioSessionControl_Release(&This->IAudioSessionControl2_iface);
2722 }
2723
2724 static HRESULT WINAPI SimpleAudioVolume_SetMasterVolume(
2725         ISimpleAudioVolume *iface, float level, const GUID *context)
2726 {
2727     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2728     AudioSession *session = This->session;
2729
2730     TRACE("(%p)->(%f, %s)\n", session, level, wine_dbgstr_guid(context));
2731
2732     if(level < 0.f || level > 1.f)
2733         return E_INVALIDARG;
2734
2735     if(context)
2736         FIXME("Notifications not supported yet\n");
2737
2738     TRACE("ALSA does not support volume control\n");
2739
2740     EnterCriticalSection(&session->lock);
2741
2742     session->master_vol = level;
2743
2744     LeaveCriticalSection(&session->lock);
2745
2746     return S_OK;
2747 }
2748
2749 static HRESULT WINAPI SimpleAudioVolume_GetMasterVolume(
2750         ISimpleAudioVolume *iface, float *level)
2751 {
2752     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2753     AudioSession *session = This->session;
2754
2755     TRACE("(%p)->(%p)\n", session, level);
2756
2757     if(!level)
2758         return NULL_PTR_ERR;
2759
2760     *level = session->master_vol;
2761
2762     return S_OK;
2763 }
2764
2765 static HRESULT WINAPI SimpleAudioVolume_SetMute(ISimpleAudioVolume *iface,
2766         BOOL mute, const GUID *context)
2767 {
2768     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2769     AudioSession *session = This->session;
2770
2771     TRACE("(%p)->(%u, %p)\n", session, mute, context);
2772
2773     if(context)
2774         FIXME("Notifications not supported yet\n");
2775
2776     session->mute = mute;
2777
2778     return S_OK;
2779 }
2780
2781 static HRESULT WINAPI SimpleAudioVolume_GetMute(ISimpleAudioVolume *iface,
2782         BOOL *mute)
2783 {
2784     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
2785     AudioSession *session = This->session;
2786
2787     TRACE("(%p)->(%p)\n", session, mute);
2788
2789     if(!mute)
2790         return NULL_PTR_ERR;
2791
2792     *mute = session->mute;
2793
2794     return S_OK;
2795 }
2796
2797 static const ISimpleAudioVolumeVtbl SimpleAudioVolume_Vtbl  =
2798 {
2799     SimpleAudioVolume_QueryInterface,
2800     SimpleAudioVolume_AddRef,
2801     SimpleAudioVolume_Release,
2802     SimpleAudioVolume_SetMasterVolume,
2803     SimpleAudioVolume_GetMasterVolume,
2804     SimpleAudioVolume_SetMute,
2805     SimpleAudioVolume_GetMute
2806 };
2807
2808 static HRESULT WINAPI AudioStreamVolume_QueryInterface(
2809         IAudioStreamVolume *iface, REFIID riid, void **ppv)
2810 {
2811     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2812
2813     if(!ppv)
2814         return E_POINTER;
2815     *ppv = NULL;
2816
2817     if(IsEqualIID(riid, &IID_IUnknown) ||
2818             IsEqualIID(riid, &IID_IAudioStreamVolume))
2819         *ppv = iface;
2820     if(*ppv){
2821         IUnknown_AddRef((IUnknown*)*ppv);
2822         return S_OK;
2823     }
2824
2825     WARN("Unknown interface %s\n", debugstr_guid(riid));
2826     return E_NOINTERFACE;
2827 }
2828
2829 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
2830 {
2831     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2832     return IAudioClient_AddRef(&This->IAudioClient_iface);
2833 }
2834
2835 static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
2836 {
2837     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2838     return IAudioClient_Release(&This->IAudioClient_iface);
2839 }
2840
2841 static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
2842         IAudioStreamVolume *iface, UINT32 *out)
2843 {
2844     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2845
2846     TRACE("(%p)->(%p)\n", This, out);
2847
2848     if(!out)
2849         return E_POINTER;
2850
2851     *out = This->fmt->nChannels;
2852
2853     return S_OK;
2854 }
2855
2856 static HRESULT WINAPI AudioStreamVolume_SetChannelVolume(
2857         IAudioStreamVolume *iface, UINT32 index, float level)
2858 {
2859     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2860
2861     TRACE("(%p)->(%d, %f)\n", This, index, level);
2862
2863     if(level < 0.f || level > 1.f)
2864         return E_INVALIDARG;
2865
2866     if(index >= This->fmt->nChannels)
2867         return E_INVALIDARG;
2868
2869     TRACE("ALSA does not support volume control\n");
2870
2871     EnterCriticalSection(&This->lock);
2872
2873     This->vols[index] = level;
2874
2875     LeaveCriticalSection(&This->lock);
2876
2877     return S_OK;
2878 }
2879
2880 static HRESULT WINAPI AudioStreamVolume_GetChannelVolume(
2881         IAudioStreamVolume *iface, UINT32 index, float *level)
2882 {
2883     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2884
2885     TRACE("(%p)->(%d, %p)\n", This, index, level);
2886
2887     if(!level)
2888         return E_POINTER;
2889
2890     if(index >= This->fmt->nChannels)
2891         return E_INVALIDARG;
2892
2893     *level = This->vols[index];
2894
2895     return S_OK;
2896 }
2897
2898 static HRESULT WINAPI AudioStreamVolume_SetAllVolumes(
2899         IAudioStreamVolume *iface, UINT32 count, const float *levels)
2900 {
2901     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2902     int i;
2903
2904     TRACE("(%p)->(%d, %p)\n", This, count, levels);
2905
2906     if(!levels)
2907         return E_POINTER;
2908
2909     if(count != This->fmt->nChannels)
2910         return E_INVALIDARG;
2911
2912     TRACE("ALSA does not support volume control\n");
2913
2914     EnterCriticalSection(&This->lock);
2915
2916     for(i = 0; i < count; ++i)
2917         This->vols[i] = levels[i];
2918
2919     LeaveCriticalSection(&This->lock);
2920
2921     return S_OK;
2922 }
2923
2924 static HRESULT WINAPI AudioStreamVolume_GetAllVolumes(
2925         IAudioStreamVolume *iface, UINT32 count, float *levels)
2926 {
2927     ACImpl *This = impl_from_IAudioStreamVolume(iface);
2928     int i;
2929
2930     TRACE("(%p)->(%d, %p)\n", This, count, levels);
2931
2932     if(!levels)
2933         return E_POINTER;
2934
2935     if(count != This->fmt->nChannels)
2936         return E_INVALIDARG;
2937
2938     EnterCriticalSection(&This->lock);
2939
2940     for(i = 0; i < count; ++i)
2941         levels[i] = This->vols[i];
2942
2943     LeaveCriticalSection(&This->lock);
2944
2945     return S_OK;
2946 }
2947
2948 static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl =
2949 {
2950     AudioStreamVolume_QueryInterface,
2951     AudioStreamVolume_AddRef,
2952     AudioStreamVolume_Release,
2953     AudioStreamVolume_GetChannelCount,
2954     AudioStreamVolume_SetChannelVolume,
2955     AudioStreamVolume_GetChannelVolume,
2956     AudioStreamVolume_SetAllVolumes,
2957     AudioStreamVolume_GetAllVolumes
2958 };
2959
2960 static HRESULT WINAPI ChannelAudioVolume_QueryInterface(
2961         IChannelAudioVolume *iface, REFIID riid, void **ppv)
2962 {
2963     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2964
2965     if(!ppv)
2966         return E_POINTER;
2967     *ppv = NULL;
2968
2969     if(IsEqualIID(riid, &IID_IUnknown) ||
2970             IsEqualIID(riid, &IID_IChannelAudioVolume))
2971         *ppv = iface;
2972     if(*ppv){
2973         IUnknown_AddRef((IUnknown*)*ppv);
2974         return S_OK;
2975     }
2976
2977     WARN("Unknown interface %s\n", debugstr_guid(riid));
2978     return E_NOINTERFACE;
2979 }
2980
2981 static ULONG WINAPI ChannelAudioVolume_AddRef(IChannelAudioVolume *iface)
2982 {
2983     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2984     return AudioSessionControl_AddRef(&This->IAudioSessionControl2_iface);
2985 }
2986
2987 static ULONG WINAPI ChannelAudioVolume_Release(IChannelAudioVolume *iface)
2988 {
2989     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2990     return AudioSessionControl_Release(&This->IAudioSessionControl2_iface);
2991 }
2992
2993 static HRESULT WINAPI ChannelAudioVolume_GetChannelCount(
2994         IChannelAudioVolume *iface, UINT32 *out)
2995 {
2996     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
2997     AudioSession *session = This->session;
2998
2999     TRACE("(%p)->(%p)\n", session, out);
3000
3001     if(!out)
3002         return NULL_PTR_ERR;
3003
3004     *out = session->channel_count;
3005
3006     return S_OK;
3007 }
3008
3009 static HRESULT WINAPI ChannelAudioVolume_SetChannelVolume(
3010         IChannelAudioVolume *iface, UINT32 index, float level,
3011         const GUID *context)
3012 {
3013     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3014     AudioSession *session = This->session;
3015
3016     TRACE("(%p)->(%d, %f, %s)\n", session, index, level,
3017             wine_dbgstr_guid(context));
3018
3019     if(level < 0.f || level > 1.f)
3020         return E_INVALIDARG;
3021
3022     if(index >= session->channel_count)
3023         return E_INVALIDARG;
3024
3025     if(context)
3026         FIXME("Notifications not supported yet\n");
3027
3028     TRACE("ALSA does not support volume control\n");
3029
3030     EnterCriticalSection(&session->lock);
3031
3032     session->channel_vols[index] = level;
3033
3034     LeaveCriticalSection(&session->lock);
3035
3036     return S_OK;
3037 }
3038
3039 static HRESULT WINAPI ChannelAudioVolume_GetChannelVolume(
3040         IChannelAudioVolume *iface, UINT32 index, float *level)
3041 {
3042     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3043     AudioSession *session = This->session;
3044
3045     TRACE("(%p)->(%d, %p)\n", session, index, level);
3046
3047     if(!level)
3048         return NULL_PTR_ERR;
3049
3050     if(index >= session->channel_count)
3051         return E_INVALIDARG;
3052
3053     *level = session->channel_vols[index];
3054
3055     return S_OK;
3056 }
3057
3058 static HRESULT WINAPI ChannelAudioVolume_SetAllVolumes(
3059         IChannelAudioVolume *iface, UINT32 count, const float *levels,
3060         const GUID *context)
3061 {
3062     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3063     AudioSession *session = This->session;
3064     int i;
3065
3066     TRACE("(%p)->(%d, %p, %s)\n", session, count, levels,
3067             wine_dbgstr_guid(context));
3068
3069     if(!levels)
3070         return NULL_PTR_ERR;
3071
3072     if(count != session->channel_count)
3073         return E_INVALIDARG;
3074
3075     if(context)
3076         FIXME("Notifications not supported yet\n");
3077
3078     TRACE("ALSA does not support volume control\n");
3079
3080     EnterCriticalSection(&session->lock);
3081
3082     for(i = 0; i < count; ++i)
3083         session->channel_vols[i] = levels[i];
3084
3085     LeaveCriticalSection(&session->lock);
3086
3087     return S_OK;
3088 }
3089
3090 static HRESULT WINAPI ChannelAudioVolume_GetAllVolumes(
3091         IChannelAudioVolume *iface, UINT32 count, float *levels)
3092 {
3093     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3094     AudioSession *session = This->session;
3095     int i;
3096
3097     TRACE("(%p)->(%d, %p)\n", session, count, levels);
3098
3099     if(!levels)
3100         return NULL_PTR_ERR;
3101
3102     if(count != session->channel_count)
3103         return E_INVALIDARG;
3104
3105     for(i = 0; i < count; ++i)
3106         levels[i] = session->channel_vols[i];
3107
3108     return S_OK;
3109 }
3110
3111 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl =
3112 {
3113     ChannelAudioVolume_QueryInterface,
3114     ChannelAudioVolume_AddRef,
3115     ChannelAudioVolume_Release,
3116     ChannelAudioVolume_GetChannelCount,
3117     ChannelAudioVolume_SetChannelVolume,
3118     ChannelAudioVolume_GetChannelVolume,
3119     ChannelAudioVolume_SetAllVolumes,
3120     ChannelAudioVolume_GetAllVolumes
3121 };
3122
3123 static HRESULT WINAPI AudioSessionManager_QueryInterface(IAudioSessionManager2 *iface,
3124         REFIID riid, void **ppv)
3125 {
3126     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3127
3128     if(!ppv)
3129         return E_POINTER;
3130     *ppv = NULL;
3131
3132     if(IsEqualIID(riid, &IID_IUnknown) ||
3133             IsEqualIID(riid, &IID_IAudioSessionManager) ||
3134             IsEqualIID(riid, &IID_IAudioSessionManager2))
3135         *ppv = iface;
3136     if(*ppv){
3137         IUnknown_AddRef((IUnknown*)*ppv);
3138         return S_OK;
3139     }
3140
3141     WARN("Unknown interface %s\n", debugstr_guid(riid));
3142     return E_NOINTERFACE;
3143 }
3144
3145 static ULONG WINAPI AudioSessionManager_AddRef(IAudioSessionManager2 *iface)
3146 {
3147     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3148     ULONG ref;
3149     ref = InterlockedIncrement(&This->ref);
3150     TRACE("(%p) Refcount now %u\n", This, ref);
3151     return ref;
3152 }
3153
3154 static ULONG WINAPI AudioSessionManager_Release(IAudioSessionManager2 *iface)
3155 {
3156     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3157     ULONG ref;
3158     ref = InterlockedDecrement(&This->ref);
3159     TRACE("(%p) Refcount now %u\n", This, ref);
3160     if(!ref)
3161         HeapFree(GetProcessHeap(), 0, This);
3162     return ref;
3163 }
3164
3165 static HRESULT WINAPI AudioSessionManager_GetAudioSessionControl(
3166         IAudioSessionManager2 *iface, const GUID *session_guid, DWORD flags,
3167         IAudioSessionControl **out)
3168 {
3169     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3170     AudioSession *session;
3171     AudioSessionWrapper *wrapper;
3172     HRESULT hr;
3173
3174     TRACE("(%p)->(%s, %x, %p)\n", This, debugstr_guid(session_guid),
3175             flags, out);
3176
3177     hr = get_audio_session(session_guid, This->device, 0, &session);
3178     if(FAILED(hr))
3179         return hr;
3180
3181     wrapper = AudioSessionWrapper_Create(NULL);
3182     if(!wrapper)
3183         return E_OUTOFMEMORY;
3184
3185     wrapper->session = session;
3186
3187     *out = (IAudioSessionControl*)&wrapper->IAudioSessionControl2_iface;
3188
3189     return S_OK;
3190 }
3191
3192 static HRESULT WINAPI AudioSessionManager_GetSimpleAudioVolume(
3193         IAudioSessionManager2 *iface, const GUID *session_guid, DWORD flags,
3194         ISimpleAudioVolume **out)
3195 {
3196     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3197     AudioSession *session;
3198     AudioSessionWrapper *wrapper;
3199     HRESULT hr;
3200
3201     TRACE("(%p)->(%s, %x, %p)\n", This, debugstr_guid(session_guid),
3202             flags, out);
3203
3204     hr = get_audio_session(session_guid, This->device, 0, &session);
3205     if(FAILED(hr))
3206         return hr;
3207
3208     wrapper = AudioSessionWrapper_Create(NULL);
3209     if(!wrapper)
3210         return E_OUTOFMEMORY;
3211
3212     wrapper->session = session;
3213
3214     *out = &wrapper->ISimpleAudioVolume_iface;
3215
3216     return S_OK;
3217 }
3218
3219 static HRESULT WINAPI AudioSessionManager_GetSessionEnumerator(
3220         IAudioSessionManager2 *iface, IAudioSessionEnumerator **out)
3221 {
3222     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3223     FIXME("(%p)->(%p) - stub\n", This, out);
3224     return E_NOTIMPL;
3225 }
3226
3227 static HRESULT WINAPI AudioSessionManager_RegisterSessionNotification(
3228         IAudioSessionManager2 *iface, IAudioSessionNotification *notification)
3229 {
3230     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3231     FIXME("(%p)->(%p) - stub\n", This, notification);
3232     return E_NOTIMPL;
3233 }
3234
3235 static HRESULT WINAPI AudioSessionManager_UnregisterSessionNotification(
3236         IAudioSessionManager2 *iface, IAudioSessionNotification *notification)
3237 {
3238     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3239     FIXME("(%p)->(%p) - stub\n", This, notification);
3240     return E_NOTIMPL;
3241 }
3242
3243 static HRESULT WINAPI AudioSessionManager_RegisterDuckNotification(
3244         IAudioSessionManager2 *iface, const WCHAR *session_id,
3245         IAudioVolumeDuckNotification *notification)
3246 {
3247     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3248     FIXME("(%p)->(%p) - stub\n", This, notification);
3249     return E_NOTIMPL;
3250 }
3251
3252 static HRESULT WINAPI AudioSessionManager_UnregisterDuckNotification(
3253         IAudioSessionManager2 *iface,
3254         IAudioVolumeDuckNotification *notification)
3255 {
3256     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
3257     FIXME("(%p)->(%p) - stub\n", This, notification);
3258     return E_NOTIMPL;
3259 }
3260
3261 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl =
3262 {
3263     AudioSessionManager_QueryInterface,
3264     AudioSessionManager_AddRef,
3265     AudioSessionManager_Release,
3266     AudioSessionManager_GetAudioSessionControl,
3267     AudioSessionManager_GetSimpleAudioVolume,
3268     AudioSessionManager_GetSessionEnumerator,
3269     AudioSessionManager_RegisterSessionNotification,
3270     AudioSessionManager_UnregisterSessionNotification,
3271     AudioSessionManager_RegisterDuckNotification,
3272     AudioSessionManager_UnregisterDuckNotification
3273 };
3274
3275 HRESULT WINAPI AUDDRV_GetAudioSessionManager(IMMDevice *device,
3276         IAudioSessionManager2 **out)
3277 {
3278     SessionMgr *This;
3279
3280     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(SessionMgr));
3281     if(!This)
3282         return E_OUTOFMEMORY;
3283
3284     This->IAudioSessionManager2_iface.lpVtbl = &AudioSessionManager2_Vtbl;
3285     This->device = device;
3286     This->ref = 1;
3287
3288     *out = &This->IAudioSessionManager2_iface;
3289
3290     return S_OK;
3291 }