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 "propsys.h"
  36 #include "initguid.h"
  37 #include "ole2.h"
  38 #include "propkey.h"
  39 #include "mmdeviceapi.h"
  40 #include "devpkey.h"
  41 #include "mmsystem.h"
  42 #include "dsound.h"
  43
  44 #include "initguid.h"
  45 #include "endpointvolume.h"
  46 #include "audioclient.h"
  47 #include "audiopolicy.h"
  48
  49 #include <alsa/asoundlib.h>
  50
  51 WINE_DEFAULT_DEBUG_CHANNEL(alsa);
  52 WINE_DECLARE_DEBUG_CHANNEL(winediag);
  53
  54 #define NULL_PTR_ERR MAKE_HRESULT(SEVERITY_ERROR, FACILITY_WIN32, RPC_X_NULL_REF_POINTER)
  55
  56 static const REFERENCE_TIME DefaultPeriod = 100000;
  57 static const REFERENCE_TIME MinimumPeriod = 50000;
  58 #define                     EXTRA_SAFE_RT   40000
  59
  60 struct ACImpl;
  61 typedef struct ACImpl ACImpl;
  62
  63 typedef struct _AudioSession {
  64     GUID guid;
  65     struct list clients;
  66
  67     IMMDevice *device;
  68
  69     float master_vol;
  70     UINT32 channel_count;
  71     float *channel_vols;
  72     BOOL mute;
  73
  74     CRITICAL_SECTION lock;
  75
  76     struct list entry;
  77 } AudioSession;
  78
  79 typedef struct _AudioSessionWrapper {
  80     IAudioSessionControl2 IAudioSessionControl2_iface;
  81     IChannelAudioVolume IChannelAudioVolume_iface;
  82     ISimpleAudioVolume ISimpleAudioVolume_iface;
  83
  84     LONG ref;
  85
  86     ACImpl *client;
  87     AudioSession *session;
  88 } AudioSessionWrapper;
  89
  90 struct ACImpl {
  91     IAudioClient3 IAudioClient3_iface;
  92     IAudioRenderClient IAudioRenderClient_iface;
  93     IAudioCaptureClient IAudioCaptureClient_iface;
  94     IAudioClock IAudioClock_iface;
  95     IAudioClock2 IAudioClock2_iface;
  96     IAudioStreamVolume IAudioStreamVolume_iface;
  97
  98     LONG ref;
  99
 100     snd_pcm_t *pcm_handle;
 101     snd_pcm_uframes_t alsa_bufsize_frames, alsa_period_frames, safe_rewind_frames;
 102     snd_pcm_hw_params_t *hw_params; /* does not hold state between calls */
 103     snd_pcm_format_t alsa_format;
 104
 105     LARGE_INTEGER last_period_time;
 106
 107     IMMDevice *parent;
 108     IUnknown *pUnkFTMarshal;
 109
 110     EDataFlow dataflow;
 111     WAVEFORMATEX *fmt;
 112     DWORD flags;
 113     AUDCLNT_SHAREMODE share;
 114     HANDLE event;
 115     float *vols;
 116
 117     BOOL need_remapping;
 118     int alsa_channels;
 119     int alsa_channel_map[32];
 120
 121     BOOL initted, started;
 122     REFERENCE_TIME mmdev_period_rt;
 123     UINT64 written_frames, last_pos_frames;
 124     UINT32 bufsize_frames, held_frames, tmp_buffer_frames, mmdev_period_frames;
 125     snd_pcm_uframes_t remapping_buf_frames;
 126     UINT32 lcl_offs_frames; /* offs into local_buffer where valid data starts */
 127     UINT32 wri_offs_frames; /* where to write fresh data in local_buffer */
 128     UINT32 hidden_frames;   /* ALSA reserve to ensure continuous rendering */
 129     UINT32 vol_adjusted_frames; /* Frames we've already adjusted the volume of but didn't write yet */
 130     UINT32 data_in_alsa_frames;
 131
 132     HANDLE timer;
 133     BYTE *local_buffer, *tmp_buffer, *remapping_buf, *silence_buf;
 134     LONG32 getbuf_last; /* <0 when using tmp_buffer */
 135
 136     CRITICAL_SECTION lock;
 137
 138     AudioSession *session;
 139     AudioSessionWrapper *session_wrapper;
 140
 141     struct list entry;
 142 };
 143
 144 typedef struct _SessionMgr {
 145     IAudioSessionManager2 IAudioSessionManager2_iface;
 146
 147     LONG ref;
 148
 149     IMMDevice *device;
 150 } SessionMgr;
 151
 152 static HANDLE g_timer_q;
 153
 154 static CRITICAL_SECTION g_sessions_lock;
 155 static CRITICAL_SECTION_DEBUG g_sessions_lock_debug =
 156 {
 157     0, 0, &g_sessions_lock,
 158     { &g_sessions_lock_debug.ProcessLocksList, &g_sessions_lock_debug.ProcessLocksList },
 159       0, 0, { (DWORD_PTR)(__FILE__ ": g_sessions_lock") }
 160 };
 161 static CRITICAL_SECTION g_sessions_lock = { &g_sessions_lock_debug, -1, 0, 0, 0, 0 };
 162 static struct list g_sessions = LIST_INIT(g_sessions);
 163
 164 static const WCHAR defaultW[] = {'d','e','f','a','u','l','t',0};
 165 static const char defname[] = "default";
 166
 167 static const WCHAR drv_keyW[] = {'S','o','f','t','w','a','r','e','\\',
 168     'W','i','n','e','\\','D','r','i','v','e','r','s','\\',
 169     'w','i','n','e','a','l','s','a','.','d','r','v',0};
 170 static const WCHAR drv_key_devicesW[] = {'S','o','f','t','w','a','r','e','\\',
 171     'W','i','n','e','\\','D','r','i','v','e','r','s','\\',
 172     'w','i','n','e','a','l','s','a','.','d','r','v','\\','d','e','v','i','c','e','s',0};
 173 static const WCHAR guidW[] = {'g','u','i','d',0};
 174
 175 static const IAudioClient3Vtbl AudioClient3_Vtbl;
 176 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl;
 177 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl;
 178 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl;
 179 static const ISimpleAudioVolumeVtbl SimpleAudioVolume_Vtbl;
 180 static const IAudioClockVtbl AudioClock_Vtbl;
 181 static const IAudioClock2Vtbl AudioClock2_Vtbl;
 182 static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl;
 183 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl;
 184 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl;
 185
 186 static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client);
 187
 188 static inline ACImpl *impl_from_IAudioClient3(IAudioClient3 *iface)
 189 {
 190     return CONTAINING_RECORD(iface, ACImpl, IAudioClient3_iface);
 191 }
 192
 193 static inline ACImpl *impl_from_IAudioRenderClient(IAudioRenderClient *iface)
 194 {
 195     return CONTAINING_RECORD(iface, ACImpl, IAudioRenderClient_iface);
 196 }
 197
 198 static inline ACImpl *impl_from_IAudioCaptureClient(IAudioCaptureClient *iface)
 199 {
 200     return CONTAINING_RECORD(iface, ACImpl, IAudioCaptureClient_iface);
 201 }
 202
 203 static inline AudioSessionWrapper *impl_from_IAudioSessionControl2(IAudioSessionControl2 *iface)
 204 {
 205     return CONTAINING_RECORD(iface, AudioSessionWrapper, IAudioSessionControl2_iface);
 206 }
 207
 208 static inline AudioSessionWrapper *impl_from_ISimpleAudioVolume(ISimpleAudioVolume *iface)
 209 {
 210     return CONTAINING_RECORD(iface, AudioSessionWrapper, ISimpleAudioVolume_iface);
 211 }
 212
 213 static inline AudioSessionWrapper *impl_from_IChannelAudioVolume(IChannelAudioVolume *iface)
 214 {
 215     return CONTAINING_RECORD(iface, AudioSessionWrapper, IChannelAudioVolume_iface);
 216 }
 217
 218 static inline ACImpl *impl_from_IAudioClock(IAudioClock *iface)
 219 {
 220     return CONTAINING_RECORD(iface, ACImpl, IAudioClock_iface);
 221 }
 222
 223 static inline ACImpl *impl_from_IAudioClock2(IAudioClock2 *iface)
 224 {
 225     return CONTAINING_RECORD(iface, ACImpl, IAudioClock2_iface);
 226 }
 227
 228 static inline ACImpl *impl_from_IAudioStreamVolume(IAudioStreamVolume *iface)
 229 {
 230     return CONTAINING_RECORD(iface, ACImpl, IAudioStreamVolume_iface);
 231 }
 232
 233 static inline SessionMgr *impl_from_IAudioSessionManager2(IAudioSessionManager2 *iface)
 234 {
 235     return CONTAINING_RECORD(iface, SessionMgr, IAudioSessionManager2_iface);
 236 }
 237
 238 BOOL WINAPI DllMain(HINSTANCE dll, DWORD reason, void *reserved)
 239 {
 240     switch (reason)
 241     {
 242     case DLL_PROCESS_ATTACH:
 243         g_timer_q = CreateTimerQueue();
 244         if(!g_timer_q)
 245             return FALSE;
 246         break;
 247
 248     case DLL_PROCESS_DETACH:
 249         if (reserved) break;
 250         DeleteCriticalSection(&g_sessions_lock);
 251         break;
 252     }
 253     return TRUE;
 254 }
 255
 256 /* From <dlls/mmdevapi/mmdevapi.h> */
 257 enum DriverPriority {
 258     Priority_Unavailable = 0,
 259     Priority_Low,
 260     Priority_Neutral,
 261     Priority_Preferred
 262 };
 263
 264 int WINAPI AUDDRV_GetPriority(void)
 265 {
 266     return Priority_Neutral;
 267 }
 268
 269 static void set_device_guid(EDataFlow flow, HKEY drv_key, const WCHAR *key_name,
 270         GUID *guid)
 271 {
 272     HKEY key;
 273     BOOL opened = FALSE;
 274     LONG lr;
 275
 276     if(!drv_key){
 277         lr = RegCreateKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, NULL, 0, KEY_WRITE,
 278                     NULL, &drv_key, NULL);
 279         if(lr != ERROR_SUCCESS){
 280             ERR("RegCreateKeyEx(drv_key) failed: %u\n", lr);
 281             return;
 282         }
 283         opened = TRUE;
 284     }
 285
 286     lr = RegCreateKeyExW(drv_key, key_name, 0, NULL, 0, KEY_WRITE,
 287                 NULL, &key, NULL);
 288     if(lr != ERROR_SUCCESS){
 289         ERR("RegCreateKeyEx(%s) failed: %u\n", wine_dbgstr_w(key_name), lr);
 290         goto exit;
 291     }
 292
 293     lr = RegSetValueExW(key, guidW, 0, REG_BINARY, (BYTE*)guid,
 294                 sizeof(GUID));
 295     if(lr != ERROR_SUCCESS)
 296         ERR("RegSetValueEx(%s\\guid) failed: %u\n", wine_dbgstr_w(key_name), lr);
 297
 298     RegCloseKey(key);
 299 exit:
 300     if(opened)
 301         RegCloseKey(drv_key);
 302 }
 303
 304 static void get_device_guid(EDataFlow flow, const char *device, GUID *guid)
 305 {
 306     HKEY key = NULL, dev_key;
 307     DWORD type, size = sizeof(*guid);
 308     WCHAR key_name[256];
 309
 310     if(flow == eCapture)
 311         key_name[0] = '1';
 312     else
 313         key_name[0] = '0';
 314     key_name[1] = ',';
 315     MultiByteToWideChar(CP_UNIXCP, 0, device, -1, key_name + 2, ARRAY_SIZE(key_name) - 2);
 316
 317     if(RegOpenKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, KEY_WRITE|KEY_READ, &key) == ERROR_SUCCESS){
 318         if(RegOpenKeyExW(key, key_name, 0, KEY_READ, &dev_key) == ERROR_SUCCESS){
 319             if(RegQueryValueExW(dev_key, guidW, 0, &type,
 320                         (BYTE*)guid, &size) == ERROR_SUCCESS){
 321                 if(type == REG_BINARY){
 322                     RegCloseKey(dev_key);
 323                     RegCloseKey(key);
 324                     return;
 325                 }
 326                 ERR("Invalid type for device %s GUID: %u; ignoring and overwriting\n",
 327                         wine_dbgstr_w(key_name), type);
 328             }
 329             RegCloseKey(dev_key);
 330         }
 331     }
 332
 333     CoCreateGuid(guid);
 334
 335     set_device_guid(flow, key, key_name, guid);
 336
 337     if(key)
 338         RegCloseKey(key);
 339 }
 340
 341 static BOOL alsa_try_open(const char *devnode, snd_pcm_stream_t stream)
 342 {
 343     snd_pcm_t *handle;
 344     int err;
 345
 346     TRACE("devnode: %s, stream: %d\n", devnode, stream);
 347
 348     if((err = snd_pcm_open(&handle, devnode, stream, SND_PCM_NONBLOCK)) < 0){
 349         WARN("The device \"%s\" failed to open: %d (%s).\n",
 350                 devnode, err, snd_strerror(err));
 351         return FALSE;
 352     }
 353
 354     snd_pcm_close(handle);
 355     return TRUE;
 356 }
 357
 358 static WCHAR *construct_device_id(EDataFlow flow, const WCHAR *chunk1, const char *chunk2)
 359 {
 360     WCHAR *ret;
 361     const WCHAR *prefix;
 362     DWORD len_wchars = 0, chunk1_len = 0, copied = 0, prefix_len;
 363
 364     static const WCHAR dashW[] = {' ','-',' ',0};
 365     static const size_t dashW_len = ARRAY_SIZE(dashW) - 1;
 366     static const WCHAR outW[] = {'O','u','t',':',' ',0};
 367     static const WCHAR inW[] = {'I','n',':',' ',0};
 368
 369     if(flow == eRender){
 370         prefix = outW;
 371         prefix_len = ARRAY_SIZE(outW) - 1;
 372         len_wchars += prefix_len;
 373     }else{
 374         prefix = inW;
 375         prefix_len = ARRAY_SIZE(inW) - 1;
 376         len_wchars += prefix_len;
 377     }
 378     if(chunk1){
 379         chunk1_len = strlenW(chunk1);
 380         len_wchars += chunk1_len;
 381     }
 382     if(chunk1 && chunk2)
 383         len_wchars += dashW_len;
 384     if(chunk2)
 385         len_wchars += MultiByteToWideChar(CP_UNIXCP, 0, chunk2, -1, NULL, 0) - 1;
 386     len_wchars += 1; /* NULL byte */
 387
 388     ret = HeapAlloc(GetProcessHeap(), 0, len_wchars * sizeof(WCHAR));
 389
 390     memcpy(ret, prefix, prefix_len * sizeof(WCHAR));
 391     copied += prefix_len;
 392     if(chunk1){
 393         memcpy(ret + copied, chunk1, chunk1_len * sizeof(WCHAR));
 394         copied += chunk1_len;
 395     }
 396     if(chunk1 && chunk2){
 397         memcpy(ret + copied, dashW, dashW_len * sizeof(WCHAR));
 398         copied += dashW_len;
 399     }
 400     if(chunk2){
 401         MultiByteToWideChar(CP_UNIXCP, 0, chunk2, -1, ret + copied, len_wchars - copied);
 402     }else
 403         ret[copied] = 0;
 404
 405     TRACE("Enumerated device: %s\n", wine_dbgstr_w(ret));
 406
 407     return ret;
 408 }
 409
 410 static HRESULT alsa_get_card_devices(EDataFlow flow, snd_pcm_stream_t stream,
 411         WCHAR ***ids, GUID **guids, UINT *num, snd_ctl_t *ctl, int card,
 412         const WCHAR *cardnameW)
 413 {
 414     int err, device;
 415     snd_pcm_info_t *info;
 416
 417     info = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_info_sizeof());
 418     if(!info)
 419         return E_OUTOFMEMORY;
 420
 421     snd_pcm_info_set_subdevice(info, 0);
 422     snd_pcm_info_set_stream(info, stream);
 423
 424     device = -1;
 425     for(err = snd_ctl_pcm_next_device(ctl, &device); device != -1 && err >= 0;
 426             err = snd_ctl_pcm_next_device(ctl, &device)){
 427         const char *devname;
 428         char devnode[32];
 429
 430         snd_pcm_info_set_device(info, device);
 431
 432         if((err = snd_ctl_pcm_info(ctl, info)) < 0){
 433             if(err == -ENOENT)
 434                 /* This device doesn't have the right stream direction */
 435                 continue;
 436
 437             WARN("Failed to get info for card %d, device %d: %d (%s)\n",
 438                     card, device, err, snd_strerror(err));
 439             continue;
 440         }
 441
 442         sprintf(devnode, "plughw:%d,%d", card, device);
 443         if(!alsa_try_open(devnode, stream))
 444             continue;
 445
 446         if(*num){
 447             *ids = HeapReAlloc(GetProcessHeap(), 0, *ids, sizeof(WCHAR *) * (*num + 1));
 448             *guids = HeapReAlloc(GetProcessHeap(), 0, *guids, sizeof(GUID) * (*num + 1));
 449         }else{
 450             *ids = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR *));
 451             *guids = HeapAlloc(GetProcessHeap(), 0, sizeof(GUID));
 452         }
 453
 454         devname = snd_pcm_info_get_name(info);
 455         if(!devname){
 456             WARN("Unable to get device name for card %d, device %d\n", card,
 457                     device);
 458             continue;
 459         }
 460
 461         (*ids)[*num] = construct_device_id(flow, cardnameW, devname);
 462         get_device_guid(flow, devnode, &(*guids)[*num]);
 463
 464         ++(*num);
 465     }
 466
 467     HeapFree(GetProcessHeap(), 0, info);
 468
 469     if(err != 0)
 470         WARN("Got a failure during device enumeration on card %d: %d (%s)\n",
 471                 card, err, snd_strerror(err));
 472
 473     return S_OK;
 474 }
 475
 476 static void get_reg_devices(EDataFlow flow, snd_pcm_stream_t stream, WCHAR ***ids,
 477         GUID **guids, UINT *num)
 478 {
 479     static const WCHAR ALSAOutputDevices[] = {'A','L','S','A','O','u','t','p','u','t','D','e','v','i','c','e','s',0};
 480     static const WCHAR ALSAInputDevices[] = {'A','L','S','A','I','n','p','u','t','D','e','v','i','c','e','s',0};
 481     HKEY key;
 482     WCHAR reg_devices[256];
 483     DWORD size = sizeof(reg_devices), type;
 484     const WCHAR *value_name = (stream == SND_PCM_STREAM_PLAYBACK) ? ALSAOutputDevices : ALSAInputDevices;
 485
 486     /* @@ Wine registry key: HKCU\Software\Wine\Drivers\winealsa.drv */
 487     if(RegOpenKeyW(HKEY_CURRENT_USER, drv_keyW, &key) == ERROR_SUCCESS){
 488         if(RegQueryValueExW(key, value_name, 0, &type,
 489                     (BYTE*)reg_devices, &size) == ERROR_SUCCESS){
 490             WCHAR *p = reg_devices;
 491
 492             if(type != REG_MULTI_SZ){
 493                 ERR("Registry ALSA device list value type must be REG_MULTI_SZ\n");
 494                 RegCloseKey(key);
 495                 return;
 496             }
 497
 498             while(*p){
 499                 char devname[64];
 500
 501                 WideCharToMultiByte(CP_UNIXCP, 0, p, -1, devname, sizeof(devname), NULL, NULL);
 502
 503                 if(alsa_try_open(devname, stream)){
 504                     if(*num){
 505                         *ids = HeapReAlloc(GetProcessHeap(), 0, *ids, sizeof(WCHAR *) * (*num + 1));
 506                         *guids = HeapReAlloc(GetProcessHeap(), 0, *guids, sizeof(GUID) * (*num + 1));
 507                     }else{
 508                         *ids = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR *));
 509                         *guids = HeapAlloc(GetProcessHeap(), 0, sizeof(GUID));
 510                     }
 511                     (*ids)[*num] = construct_device_id(flow, p, NULL);
 512                     get_device_guid(flow, devname, &(*guids)[*num]);
 513                     ++*num;
 514                 }
 515
 516                 p += lstrlenW(p) + 1;
 517             }
 518         }
 519
 520         RegCloseKey(key);
 521     }
 522 }
 523
 524 static HRESULT alsa_enum_devices(EDataFlow flow, WCHAR ***ids, GUID **guids,
 525         UINT *num)
 526 {
 527     snd_pcm_stream_t stream = (flow == eRender ? SND_PCM_STREAM_PLAYBACK :
 528         SND_PCM_STREAM_CAPTURE);
 529     int err, card;
 530
 531     card = -1;
 532     *num = 0;
 533
 534     if(alsa_try_open(defname, stream)){
 535         *ids = HeapAlloc(GetProcessHeap(), 0, sizeof(WCHAR *));
 536         (*ids)[0] = construct_device_id(flow, defaultW, NULL);
 537         *guids = HeapAlloc(GetProcessHeap(), 0, sizeof(GUID));
 538         get_device_guid(flow, defname, &(*guids)[0]);
 539         ++*num;
 540     }
 541
 542     get_reg_devices(flow, stream, ids, guids, num);
 543
 544     for(err = snd_card_next(&card); card != -1 && err >= 0;
 545             err = snd_card_next(&card)){
 546         char cardpath[64];
 547         char *cardname;
 548         WCHAR *cardnameW;
 549         snd_ctl_t *ctl;
 550         DWORD len;
 551
 552         sprintf(cardpath, "hw:%u", card);
 553
 554         if((err = snd_ctl_open(&ctl, cardpath, 0)) < 0){
 555             WARN("Unable to open ctl for ALSA device %s: %d (%s)\n", cardpath,
 556                     err, snd_strerror(err));
 557             continue;
 558         }
 559
 560         if(snd_card_get_name(card, &cardname) < 0) {
 561             /* FIXME: Should be localized */
 562             static const WCHAR nameW[] = {'U','n','k','n','o','w','n',' ','s','o','u','n','d','c','a','r','d',0};
 563             WARN("Unable to get card name for ALSA device %s: %d (%s)\n",
 564                     cardpath, err, snd_strerror(err));
 565             alsa_get_card_devices(flow, stream, ids, guids, num, ctl, card, nameW);
 566         }else{
 567             len = MultiByteToWideChar(CP_UNIXCP, 0, cardname, -1, NULL, 0);
 568             cardnameW = HeapAlloc(GetProcessHeap(), 0, len * sizeof(WCHAR));
 569
 570             if(!cardnameW){
 571                 free(cardname);
 572                 snd_ctl_close(ctl);
 573                 return E_OUTOFMEMORY;
 574             }
 575             MultiByteToWideChar(CP_UNIXCP, 0, cardname, -1, cardnameW, len);
 576
 577             alsa_get_card_devices(flow, stream, ids, guids, num, ctl, card, cardnameW);
 578
 579             HeapFree(GetProcessHeap(), 0, cardnameW);
 580             free(cardname);
 581         }
 582
 583         snd_ctl_close(ctl);
 584     }
 585
 586     if(err != 0)
 587         WARN("Got a failure during card enumeration: %d (%s)\n",
 588                 err, snd_strerror(err));
 589
 590     return S_OK;
 591 }
 592
 593 HRESULT WINAPI AUDDRV_GetEndpointIDs(EDataFlow flow, WCHAR ***ids, GUID **guids,
 594         UINT *num, UINT *def_index)
 595 {
 596     HRESULT hr;
 597
 598     TRACE("%d %p %p %p %p\n", flow, ids, guids, num, def_index);
 599
 600     *ids = NULL;
 601     *guids = NULL;
 602
 603     hr = alsa_enum_devices(flow, ids, guids, num);
 604     if(FAILED(hr)){
 605         UINT i;
 606         for(i = 0; i < *num; ++i)
 607             HeapFree(GetProcessHeap(), 0, (*ids)[i]);
 608         HeapFree(GetProcessHeap(), 0, *ids);
 609         HeapFree(GetProcessHeap(), 0, *guids);
 610         return E_OUTOFMEMORY;
 611     }
 612
 613     TRACE("Enumerated %u devices\n", *num);
 614
 615     if(*num == 0){
 616         HeapFree(GetProcessHeap(), 0, *ids);
 617         *ids = NULL;
 618         HeapFree(GetProcessHeap(), 0, *guids);
 619         *guids = NULL;
 620     }
 621
 622     *def_index = 0;
 623
 624     return S_OK;
 625 }
 626
 627 /* Using the pulse PCM device from alsa-plugins 1.0.24 triggers a bug
 628  * which causes audio to cease playing after a few minutes of playback.
 629  * Setting handle_underrun=1 on pulse-backed ALSA devices seems to work
 630  * around this issue. */
 631 static snd_config_t *make_handle_underrun_config(const char *name)
 632 {
 633     snd_config_t *lconf, *dev_node, *hu_node, *type_node;
 634     char dev_node_name[260];
 635     const char *type_str;
 636     int err;
 637
 638     snd_config_update();
 639
 640     if((err = snd_config_copy(&lconf, snd_config)) < 0){
 641         WARN("snd_config_copy failed: %d (%s)\n", err, snd_strerror(err));
 642         return NULL;
 643     }
 644
 645     sprintf(dev_node_name, "pcm.%s", name);
 646     err = snd_config_search(lconf, dev_node_name, &dev_node);
 647     if(err == -ENOENT){
 648         snd_config_delete(lconf);
 649         return NULL;
 650     }
 651     if(err < 0){
 652         snd_config_delete(lconf);
 653         WARN("snd_config_search failed: %d (%s)\n", err, snd_strerror(err));
 654         return NULL;
 655     }
 656
 657     /* ALSA is extremely fragile. If it runs into a config setting it doesn't
 658      * recognize, it tends to fail or assert. So we only want to inject
 659      * handle_underrun=1 on devices that we know will recognize it. */
 660     err = snd_config_search(dev_node, "type", &type_node);
 661     if(err == -ENOENT){
 662         snd_config_delete(lconf);
 663         return NULL;
 664     }
 665     if(err < 0){
 666         snd_config_delete(lconf);
 667         WARN("snd_config_search failed: %d (%s)\n", err, snd_strerror(err));
 668         return NULL;
 669     }
 670
 671     if((err = snd_config_get_string(type_node, &type_str)) < 0){
 672         snd_config_delete(lconf);
 673         return NULL;
 674     }
 675
 676     if(strcmp(type_str, "pulse") != 0){
 677         snd_config_delete(lconf);
 678         return NULL;
 679     }
 680
 681     err = snd_config_search(dev_node, "handle_underrun", &hu_node);
 682     if(err >= 0){
 683         /* user already has an explicit handle_underrun setting, so don't
 684          * use a local config */
 685         snd_config_delete(lconf);
 686         return NULL;
 687     }
 688     if(err != -ENOENT){
 689         snd_config_delete(lconf);
 690         WARN("snd_config_search failed: %d (%s)\n", err, snd_strerror(err));
 691         return NULL;
 692     }
 693
 694     if((err = snd_config_imake_integer(&hu_node, "handle_underrun", 1)) < 0){
 695         snd_config_delete(lconf);
 696         WARN("snd_config_imake_integer failed: %d (%s)\n", err,
 697                 snd_strerror(err));
 698         return NULL;
 699     }
 700
 701     if((err = snd_config_add(dev_node, hu_node)) < 0){
 702         snd_config_delete(lconf);
 703         WARN("snd_config_add failed: %d (%s)\n", err, snd_strerror(err));
 704         return NULL;
 705     }
 706
 707     return lconf;
 708 }
 709
 710 static BOOL get_alsa_name_by_guid(GUID *guid, char *name, DWORD name_size, EDataFlow *flow)
 711 {
 712     HKEY devices_key;
 713     UINT i = 0;
 714     WCHAR key_name[256];
 715     DWORD key_name_size;
 716
 717     if(RegOpenKeyExW(HKEY_CURRENT_USER, drv_key_devicesW, 0, KEY_READ, &devices_key) != ERROR_SUCCESS){
 718         ERR("No devices found in registry?\n");
 719         return FALSE;
 720     }
 721
 722     while(1){
 723         HKEY key;
 724         DWORD size, type;
 725         GUID reg_guid;
 726
 727         key_name_size = ARRAY_SIZE(key_name);
 728         if(RegEnumKeyExW(devices_key, i++, key_name, &key_name_size, NULL,
 729                 NULL, NULL, NULL) != ERROR_SUCCESS)
 730             break;
 731
 732         if(RegOpenKeyExW(devices_key, key_name, 0, KEY_READ, &key) != ERROR_SUCCESS){
 733             WARN("Couldn't open key: %s\n", wine_dbgstr_w(key_name));
 734             continue;
 735         }
 736
 737         size = sizeof(reg_guid);
 738         if(RegQueryValueExW(key, guidW, 0, &type,
 739                     (BYTE*)&reg_guid, &size) == ERROR_SUCCESS){
 740             if(IsEqualGUID(&reg_guid, guid)){
 741                 RegCloseKey(key);
 742                 RegCloseKey(devices_key);
 743
 744                 TRACE("Found matching device key: %s\n", wine_dbgstr_w(key_name));
 745
 746                 if(key_name[0] == '0')
 747                     *flow = eRender;
 748                 else if(key_name[0] == '1')
 749                     *flow = eCapture;
 750                 else{
 751                     ERR("Unknown device type: %c\n", key_name[0]);
 752                     return FALSE;
 753                 }
 754
 755                 WideCharToMultiByte(CP_UNIXCP, 0, key_name + 2, -1, name, name_size, NULL, NULL);
 756
 757                 return TRUE;
 758             }
 759         }
 760
 761         RegCloseKey(key);
 762     }
 763
 764     RegCloseKey(devices_key);
 765
 766     WARN("No matching device in registry for GUID %s\n", debugstr_guid(guid));
 767
 768     return FALSE;
 769 }
 770
 771 HRESULT WINAPI AUDDRV_GetAudioEndpoint(GUID *guid, IMMDevice *dev, IAudioClient **out)
 772 {
 773     ACImpl *This;
 774     int err;
 775     snd_pcm_stream_t stream;
 776     snd_config_t *lconf;
 777     static BOOL handle_underrun = TRUE;
 778     char alsa_name[256];
 779     EDataFlow dataflow;
 780     HRESULT hr;
 781
 782     TRACE("%s %p %p\n", debugstr_guid(guid), dev, out);
 783
 784     if(!get_alsa_name_by_guid(guid, alsa_name, sizeof(alsa_name), &dataflow))
 785         return AUDCLNT_E_DEVICE_INVALIDATED;
 786
 787     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(ACImpl));
 788     if(!This)
 789         return E_OUTOFMEMORY;
 790
 791     This->IAudioClient3_iface.lpVtbl = &AudioClient3_Vtbl;
 792     This->IAudioRenderClient_iface.lpVtbl = &AudioRenderClient_Vtbl;
 793     This->IAudioCaptureClient_iface.lpVtbl = &AudioCaptureClient_Vtbl;
 794     This->IAudioClock_iface.lpVtbl = &AudioClock_Vtbl;
 795     This->IAudioClock2_iface.lpVtbl = &AudioClock2_Vtbl;
 796     This->IAudioStreamVolume_iface.lpVtbl = &AudioStreamVolume_Vtbl;
 797
 798     if(dataflow == eRender)
 799         stream = SND_PCM_STREAM_PLAYBACK;
 800     else if(dataflow == eCapture)
 801         stream = SND_PCM_STREAM_CAPTURE;
 802     else{
 803         HeapFree(GetProcessHeap(), 0, This);
 804         return E_UNEXPECTED;
 805     }
 806
 807     hr = CoCreateFreeThreadedMarshaler((IUnknown *)&This->IAudioClient3_iface, &This->pUnkFTMarshal);
 808     if (FAILED(hr)) {
 809         HeapFree(GetProcessHeap(), 0, This);
 810         return hr;
 811     }
 812
 813     This->dataflow = dataflow;
 814     if(handle_underrun && ((lconf = make_handle_underrun_config(alsa_name)))){
 815         err = snd_pcm_open_lconf(&This->pcm_handle, alsa_name, stream, SND_PCM_NONBLOCK, lconf);
 816         TRACE("Opening PCM device \"%s\" with handle_underrun: %d\n", alsa_name, err);
 817         snd_config_delete(lconf);
 818         /* Pulse <= 2010 returns EINVAL, it does not know handle_underrun. */
 819         if(err == -EINVAL){
 820             ERR_(winediag)("PulseAudio \"%s\" %d without handle_underrun. Audio may hang."
 821                            " Please upgrade to alsa_plugins >= 1.0.24\n", alsa_name, err);
 822             handle_underrun = FALSE;
 823         }
 824     }else
 825         err = -EINVAL;
 826     if(err == -EINVAL){
 827         err = snd_pcm_open(&This->pcm_handle, alsa_name, stream, SND_PCM_NONBLOCK);
 828     }
 829     if(err < 0){
 830         HeapFree(GetProcessHeap(), 0, This);
 831         WARN("Unable to open PCM \"%s\": %d (%s)\n", alsa_name, err, snd_strerror(err));
 832         switch(err){
 833         case -EBUSY:
 834             return AUDCLNT_E_DEVICE_IN_USE;
 835         default:
 836             return AUDCLNT_E_ENDPOINT_CREATE_FAILED;
 837         }
 838     }
 839
 840     This->hw_params = HeapAlloc(GetProcessHeap(), 0,
 841             snd_pcm_hw_params_sizeof());
 842     if(!This->hw_params){
 843         snd_pcm_close(This->pcm_handle);
 844         HeapFree(GetProcessHeap(), 0, This);
 845         return E_OUTOFMEMORY;
 846     }
 847
 848     InitializeCriticalSection(&This->lock);
 849     This->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": ACImpl.lock");
 850
 851     This->parent = dev;
 852     IMMDevice_AddRef(This->parent);
 853
 854     *out = (IAudioClient *)&This->IAudioClient3_iface;
 855     IAudioClient3_AddRef(&This->IAudioClient3_iface);
 856
 857     return S_OK;
 858 }
 859
 860 static HRESULT WINAPI AudioClient_QueryInterface(IAudioClient3 *iface,
 861         REFIID riid, void **ppv)
 862 {
 863     ACImpl *This = impl_from_IAudioClient3(iface);
 864     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 865
 866     if(!ppv)
 867         return E_POINTER;
 868     *ppv = NULL;
 869     if(IsEqualIID(riid, &IID_IUnknown) ||
 870             IsEqualIID(riid, &IID_IAudioClient) ||
 871             IsEqualIID(riid, &IID_IAudioClient2) ||
 872             IsEqualIID(riid, &IID_IAudioClient3))
 873         *ppv = iface;
 874     else if(IsEqualIID(riid, &IID_IMarshal))
 875         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
 876
 877     if(*ppv){
 878         IUnknown_AddRef((IUnknown*)*ppv);
 879         return S_OK;
 880     }
 881     WARN("Unknown interface %s\n", debugstr_guid(riid));
 882     return E_NOINTERFACE;
 883 }
 884
 885 static ULONG WINAPI AudioClient_AddRef(IAudioClient3 *iface)
 886 {
 887     ACImpl *This = impl_from_IAudioClient3(iface);
 888     ULONG ref;
 889     ref = InterlockedIncrement(&This->ref);
 890     TRACE("(%p) Refcount now %u\n", This, ref);
 891     return ref;
 892 }
 893
 894 static ULONG WINAPI AudioClient_Release(IAudioClient3 *iface)
 895 {
 896     ACImpl *This = impl_from_IAudioClient3(iface);
 897     ULONG ref;
 898
 899     ref = InterlockedDecrement(&This->ref);
 900     TRACE("(%p) Refcount now %u\n", This, ref);
 901     if(!ref){
 902         if(This->timer){
 903             HANDLE event;
 904             DWORD wait;
 905             event = CreateEventW(NULL, TRUE, FALSE, NULL);
 906             wait = !DeleteTimerQueueTimer(g_timer_q, This->timer, event);
 907             wait = wait && GetLastError() == ERROR_IO_PENDING;
 908             if(event && wait)
 909                 WaitForSingleObject(event, INFINITE);
 910             CloseHandle(event);
 911         }
 912
 913         IAudioClient3_Stop(iface);
 914         IMMDevice_Release(This->parent);
 915         IUnknown_Release(This->pUnkFTMarshal);
 916         This->lock.DebugInfo->Spare[0] = 0;
 917         DeleteCriticalSection(&This->lock);
 918         snd_pcm_drop(This->pcm_handle);
 919         snd_pcm_close(This->pcm_handle);
 920         if(This->initted){
 921             EnterCriticalSection(&g_sessions_lock);
 922             list_remove(&This->entry);
 923             LeaveCriticalSection(&g_sessions_lock);
 924         }
 925         HeapFree(GetProcessHeap(), 0, This->vols);
 926         HeapFree(GetProcessHeap(), 0, This->local_buffer);
 927         HeapFree(GetProcessHeap(), 0, This->remapping_buf);
 928         HeapFree(GetProcessHeap(), 0, This->silence_buf);
 929         HeapFree(GetProcessHeap(), 0, This->tmp_buffer);
 930         HeapFree(GetProcessHeap(), 0, This->hw_params);
 931         CoTaskMemFree(This->fmt);
 932         HeapFree(GetProcessHeap(), 0, This);
 933     }
 934     return ref;
 935 }
 936
 937 static void dump_fmt(const WAVEFORMATEX *fmt)
 938 {
 939     TRACE("wFormatTag: 0x%x (", fmt->wFormatTag);
 940     switch(fmt->wFormatTag){
 941     case WAVE_FORMAT_PCM:
 942         TRACE("WAVE_FORMAT_PCM");
 943         break;
 944     case WAVE_FORMAT_IEEE_FLOAT:
 945         TRACE("WAVE_FORMAT_IEEE_FLOAT");
 946         break;
 947     case WAVE_FORMAT_EXTENSIBLE:
 948         TRACE("WAVE_FORMAT_EXTENSIBLE");
 949         break;
 950     default:
 951         TRACE("Unknown");
 952         break;
 953     }
 954     TRACE(")\n");
 955
 956     TRACE("nChannels: %u\n", fmt->nChannels);
 957     TRACE("nSamplesPerSec: %u\n", fmt->nSamplesPerSec);
 958     TRACE("nAvgBytesPerSec: %u\n", fmt->nAvgBytesPerSec);
 959     TRACE("nBlockAlign: %u\n", fmt->nBlockAlign);
 960     TRACE("wBitsPerSample: %u\n", fmt->wBitsPerSample);
 961     TRACE("cbSize: %u\n", fmt->cbSize);
 962
 963     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
 964         WAVEFORMATEXTENSIBLE *fmtex = (void*)fmt;
 965         TRACE("dwChannelMask: %08x\n", fmtex->dwChannelMask);
 966         TRACE("Samples: %04x\n", fmtex->Samples.wReserved);
 967         TRACE("SubFormat: %s\n", wine_dbgstr_guid(&fmtex->SubFormat));
 968     }
 969 }
 970
 971 static WAVEFORMATEX *clone_format(const WAVEFORMATEX *fmt)
 972 {
 973     WAVEFORMATEX *ret;
 974     size_t size;
 975
 976     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
 977         size = sizeof(WAVEFORMATEXTENSIBLE);
 978     else
 979         size = sizeof(WAVEFORMATEX);
 980
 981     ret = CoTaskMemAlloc(size);
 982     if(!ret)
 983         return NULL;
 984
 985     memcpy(ret, fmt, size);
 986
 987     ret->cbSize = size - sizeof(WAVEFORMATEX);
 988
 989     return ret;
 990 }
 991
 992 static snd_pcm_format_t alsa_format(const WAVEFORMATEX *fmt)
 993 {
 994     snd_pcm_format_t format = SND_PCM_FORMAT_UNKNOWN;
 995     const WAVEFORMATEXTENSIBLE *fmtex = (const WAVEFORMATEXTENSIBLE *)fmt;
 996
 997     if(fmt->wFormatTag == WAVE_FORMAT_PCM ||
 998       (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
 999        IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))){
1000         if(fmt->wBitsPerSample == 8)
1001             format = SND_PCM_FORMAT_U8;
1002         else if(fmt->wBitsPerSample == 16)
1003             format = SND_PCM_FORMAT_S16_LE;
1004         else if(fmt->wBitsPerSample == 24)
1005             format = SND_PCM_FORMAT_S24_3LE;
1006         else if(fmt->wBitsPerSample == 32)
1007             format = SND_PCM_FORMAT_S32_LE;
1008         else
1009             WARN("Unsupported bit depth: %u\n", fmt->wBitsPerSample);
1010         if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1011            fmt->wBitsPerSample != fmtex->Samples.wValidBitsPerSample){
1012             if(fmtex->Samples.wValidBitsPerSample == 20 && fmt->wBitsPerSample == 24)
1013                 format = SND_PCM_FORMAT_S20_3LE;
1014             else
1015                 WARN("Unsupported ValidBits: %u\n", fmtex->Samples.wValidBitsPerSample);
1016         }
1017     }else if(fmt->wFormatTag == WAVE_FORMAT_IEEE_FLOAT ||
1018             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1019              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_IEEE_FLOAT))){
1020         if(fmt->wBitsPerSample == 32)
1021             format = SND_PCM_FORMAT_FLOAT_LE;
1022         else if(fmt->wBitsPerSample == 64)
1023             format = SND_PCM_FORMAT_FLOAT64_LE;
1024         else
1025             WARN("Unsupported float size: %u\n", fmt->wBitsPerSample);
1026     }else
1027         WARN("Unknown wave format: %04x\n", fmt->wFormatTag);
1028     return format;
1029 }
1030
1031 static void session_init_vols(AudioSession *session, UINT channels)
1032 {
1033     if(session->channel_count < channels){
1034         UINT i;
1035
1036         if(session->channel_vols)
1037             session->channel_vols = HeapReAlloc(GetProcessHeap(), 0,
1038                     session->channel_vols, sizeof(float) * channels);
1039         else
1040             session->channel_vols = HeapAlloc(GetProcessHeap(), 0,
1041                     sizeof(float) * channels);
1042         if(!session->channel_vols)
1043             return;
1044
1045         for(i = session->channel_count; i < channels; ++i)
1046             session->channel_vols[i] = 1.f;
1047
1048         session->channel_count = channels;
1049     }
1050 }
1051
1052 static AudioSession *create_session(const GUID *guid, IMMDevice *device,
1053         UINT num_channels)
1054 {
1055     AudioSession *ret;
1056
1057     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(AudioSession));
1058     if(!ret)
1059         return NULL;
1060
1061     memcpy(&ret->guid, guid, sizeof(GUID));
1062
1063     ret->device = device;
1064
1065     list_init(&ret->clients);
1066
1067     list_add_head(&g_sessions, &ret->entry);
1068
1069     InitializeCriticalSection(&ret->lock);
1070     ret->lock.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": AudioSession.lock");
1071
1072     session_init_vols(ret, num_channels);
1073
1074     ret->master_vol = 1.f;
1075
1076     return ret;
1077 }
1078
1079 /* if channels == 0, then this will return or create a session with
1080  * matching dataflow and GUID. otherwise, channels must also match */
1081 static HRESULT get_audio_session(const GUID *sessionguid,
1082         IMMDevice *device, UINT channels, AudioSession **out)
1083 {
1084     AudioSession *session;
1085
1086     if(!sessionguid || IsEqualGUID(sessionguid, &GUID_NULL)){
1087         *out = create_session(&GUID_NULL, device, channels);
1088         if(!*out)
1089             return E_OUTOFMEMORY;
1090
1091         return S_OK;
1092     }
1093
1094     *out = NULL;
1095     LIST_FOR_EACH_ENTRY(session, &g_sessions, AudioSession, entry){
1096         if(session->device == device &&
1097                 IsEqualGUID(sessionguid, &session->guid)){
1098             session_init_vols(session, channels);
1099             *out = session;
1100             break;
1101         }
1102     }
1103
1104     if(!*out){
1105         *out = create_session(sessionguid, device, channels);
1106         if(!*out)
1107             return E_OUTOFMEMORY;
1108     }
1109
1110     return S_OK;
1111 }
1112
1113 static int alsa_channel_index(DWORD flag)
1114 {
1115     switch(flag){
1116     case SPEAKER_FRONT_LEFT:
1117         return 0;
1118     case SPEAKER_FRONT_RIGHT:
1119         return 1;
1120     case SPEAKER_BACK_LEFT:
1121         return 2;
1122     case SPEAKER_BACK_RIGHT:
1123         return 3;
1124     case SPEAKER_FRONT_CENTER:
1125         return 4;
1126     case SPEAKER_LOW_FREQUENCY:
1127         return 5;
1128     case SPEAKER_SIDE_LEFT:
1129         return 6;
1130     case SPEAKER_SIDE_RIGHT:
1131         return 7;
1132     }
1133     return -1;
1134 }
1135
1136 static BOOL need_remapping(ACImpl *This, const WAVEFORMATEX *fmt, int *map)
1137 {
1138     unsigned int i;
1139     for(i = 0; i < fmt->nChannels; ++i){
1140         if(map[i] != i)
1141             return TRUE;
1142     }
1143     return FALSE;
1144 }
1145
1146 static DWORD get_channel_mask(unsigned int channels)
1147 {
1148     switch(channels){
1149     case 0:
1150         return 0;
1151     case 1:
1152         return KSAUDIO_SPEAKER_MONO;
1153     case 2:
1154         return KSAUDIO_SPEAKER_STEREO;
1155     case 3:
1156         return KSAUDIO_SPEAKER_STEREO | SPEAKER_LOW_FREQUENCY;
1157     case 4:
1158         return KSAUDIO_SPEAKER_QUAD;    /* not _SURROUND */
1159     case 5:
1160         return KSAUDIO_SPEAKER_QUAD | SPEAKER_LOW_FREQUENCY;
1161     case 6:
1162         return KSAUDIO_SPEAKER_5POINT1; /* not 5POINT1_SURROUND */
1163     case 7:
1164         return KSAUDIO_SPEAKER_5POINT1 | SPEAKER_BACK_CENTER;
1165     case 8:
1166         return KSAUDIO_SPEAKER_7POINT1_SURROUND; /* Vista deprecates 7POINT1 */
1167     }
1168     FIXME("Unknown speaker configuration: %u\n", channels);
1169     return 0;
1170 }
1171
1172 static HRESULT map_channels(ACImpl *This, const WAVEFORMATEX *fmt, int *alsa_channels, int *map)
1173 {
1174     BOOL need_remap;
1175
1176     if(This->dataflow != eCapture && (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE || fmt->nChannels > 2) ){
1177         WAVEFORMATEXTENSIBLE *fmtex = (void*)fmt;
1178         DWORD mask, flag = SPEAKER_FRONT_LEFT;
1179         UINT i = 0;
1180
1181         if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1182                 fmtex->dwChannelMask != 0)
1183             mask = fmtex->dwChannelMask;
1184         else
1185             mask = get_channel_mask(fmt->nChannels);
1186
1187         *alsa_channels = 0;
1188
1189         while(i < fmt->nChannels && !(flag & SPEAKER_RESERVED)){
1190             if(mask & flag){
1191                 map[i] = alsa_channel_index(flag);
1192                 TRACE("Mapping mmdevapi channel %u (0x%x) to ALSA channel %d\n",
1193                         i, flag, map[i]);
1194                 if(map[i] >= *alsa_channels)
1195                     *alsa_channels = map[i] + 1;
1196                 ++i;
1197             }
1198             flag <<= 1;
1199         }
1200
1201         while(i < fmt->nChannels){
1202             map[i] = *alsa_channels;
1203             TRACE("Mapping mmdevapi channel %u to ALSA channel %d\n",
1204                     i, map[i]);
1205             ++*alsa_channels;
1206             ++i;
1207         }
1208
1209         for(i = 0; i < fmt->nChannels; ++i){
1210             if(map[i] == -1){
1211                 map[i] = *alsa_channels;
1212                 ++*alsa_channels;
1213                 TRACE("Remapping mmdevapi channel %u to ALSA channel %d\n",
1214                         i, map[i]);
1215             }
1216         }
1217
1218         need_remap = need_remapping(This, fmt, map);
1219     }else{
1220         *alsa_channels = fmt->nChannels;
1221
1222         need_remap = FALSE;
1223     }
1224
1225     TRACE("need_remapping: %u, alsa_channels: %d\n", need_remap, *alsa_channels);
1226
1227     return need_remap ? S_OK : S_FALSE;
1228 }
1229
1230 static void silence_buffer(ACImpl *This, BYTE *buffer, UINT32 frames)
1231 {
1232     WAVEFORMATEXTENSIBLE *fmtex = (WAVEFORMATEXTENSIBLE*)This->fmt;
1233     if((This->fmt->wFormatTag == WAVE_FORMAT_PCM ||
1234             (This->fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1235              IsEqualGUID(&fmtex->SubFormat, &KSDATAFORMAT_SUBTYPE_PCM))) &&
1236             This->fmt->wBitsPerSample == 8)
1237         memset(buffer, 128, frames * This->fmt->nBlockAlign);
1238     else
1239         memset(buffer, 0, frames * This->fmt->nBlockAlign);
1240 }
1241
1242 static HRESULT WINAPI AudioClient_Initialize(IAudioClient3 *iface,
1243         AUDCLNT_SHAREMODE mode, DWORD flags, REFERENCE_TIME duration,
1244         REFERENCE_TIME period, const WAVEFORMATEX *fmt,
1245         const GUID *sessionguid)
1246 {
1247     ACImpl *This = impl_from_IAudioClient3(iface);
1248     snd_pcm_sw_params_t *sw_params = NULL;
1249     snd_pcm_format_t format;
1250     unsigned int rate, alsa_period_us;
1251     int err, i;
1252     HRESULT hr = S_OK;
1253
1254     TRACE("(%p)->(%x, %x, %s, %s, %p, %s)\n", This, mode, flags,
1255           wine_dbgstr_longlong(duration), wine_dbgstr_longlong(period), fmt, debugstr_guid(sessionguid));
1256
1257     if(!fmt)
1258         return E_POINTER;
1259
1260     if(mode != AUDCLNT_SHAREMODE_SHARED && mode != AUDCLNT_SHAREMODE_EXCLUSIVE)
1261         return E_INVALIDARG;
1262
1263     if(flags & ~(AUDCLNT_STREAMFLAGS_CROSSPROCESS |
1264                 AUDCLNT_STREAMFLAGS_LOOPBACK |
1265                 AUDCLNT_STREAMFLAGS_EVENTCALLBACK |
1266                 AUDCLNT_STREAMFLAGS_NOPERSIST |
1267                 AUDCLNT_STREAMFLAGS_RATEADJUST |
1268                 AUDCLNT_SESSIONFLAGS_EXPIREWHENUNOWNED |
1269                 AUDCLNT_SESSIONFLAGS_DISPLAY_HIDE |
1270                 AUDCLNT_SESSIONFLAGS_DISPLAY_HIDEWHENEXPIRED |
1271                 AUDCLNT_STREAMFLAGS_SRC_DEFAULT_QUALITY |
1272                 AUDCLNT_STREAMFLAGS_AUTOCONVERTPCM)){
1273         FIXME("Unknown flags: %08x\n", flags);
1274         return E_INVALIDARG;
1275     }
1276
1277     if(mode == AUDCLNT_SHAREMODE_SHARED){
1278         period = DefaultPeriod;
1279         if( duration < 3 * period)
1280             duration = 3 * period;
1281     }else{
1282         if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
1283             if(((WAVEFORMATEXTENSIBLE*)fmt)->dwChannelMask == 0 ||
1284                     ((WAVEFORMATEXTENSIBLE*)fmt)->dwChannelMask & SPEAKER_RESERVED)
1285                 return AUDCLNT_E_UNSUPPORTED_FORMAT;
1286         }
1287
1288         if(!period)
1289             period = DefaultPeriod; /* not minimum */
1290         if(period < MinimumPeriod || period > 5000000)
1291             return AUDCLNT_E_INVALID_DEVICE_PERIOD;
1292         if(duration > 20000000) /* the smaller the period, the lower this limit */
1293             return AUDCLNT_E_BUFFER_SIZE_ERROR;
1294         if(flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK){
1295             if(duration != period)
1296                 return AUDCLNT_E_BUFDURATION_PERIOD_NOT_EQUAL;
1297             FIXME("EXCLUSIVE mode with EVENTCALLBACK\n");
1298             return AUDCLNT_E_DEVICE_IN_USE;
1299         }else{
1300             if( duration < 8 * period)
1301                 duration = 8 * period; /* may grow above 2s */
1302         }
1303     }
1304
1305     EnterCriticalSection(&This->lock);
1306
1307     if(This->initted){
1308         LeaveCriticalSection(&This->lock);
1309         return AUDCLNT_E_ALREADY_INITIALIZED;
1310     }
1311
1312     dump_fmt(fmt);
1313
1314     This->need_remapping = map_channels(This, fmt, &This->alsa_channels, This->alsa_channel_map) == S_OK;
1315
1316     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1317         WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
1318         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1319         goto exit;
1320     }
1321
1322     if((err = snd_pcm_hw_params_set_access(This->pcm_handle, This->hw_params,
1323                 SND_PCM_ACCESS_RW_INTERLEAVED)) < 0){
1324         WARN("Unable to set access: %d (%s)\n", err, snd_strerror(err));
1325         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1326         goto exit;
1327     }
1328
1329     format = alsa_format(fmt);
1330     if (format == SND_PCM_FORMAT_UNKNOWN){
1331         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1332         goto exit;
1333     }
1334
1335     if((err = snd_pcm_hw_params_set_format(This->pcm_handle, This->hw_params,
1336                 format)) < 0){
1337         WARN("Unable to set ALSA format to %u: %d (%s)\n", format, err,
1338                 snd_strerror(err));
1339         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1340         goto exit;
1341     }
1342
1343     This->alsa_format = format;
1344
1345     rate = fmt->nSamplesPerSec;
1346     if((err = snd_pcm_hw_params_set_rate_near(This->pcm_handle, This->hw_params,
1347                 &rate, NULL)) < 0){
1348         WARN("Unable to set rate to %u: %d (%s)\n", rate, err,
1349                 snd_strerror(err));
1350         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1351         goto exit;
1352     }
1353
1354     if((err = snd_pcm_hw_params_set_channels(This->pcm_handle, This->hw_params,
1355                 This->alsa_channels)) < 0){
1356         WARN("Unable to set channels to %u: %d (%s)\n", fmt->nChannels, err,
1357                 snd_strerror(err));
1358         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1359         goto exit;
1360     }
1361
1362     This->mmdev_period_rt = period;
1363     alsa_period_us = This->mmdev_period_rt / 10;
1364     if((err = snd_pcm_hw_params_set_period_time_near(This->pcm_handle,
1365                 This->hw_params, &alsa_period_us, NULL)) < 0)
1366         WARN("Unable to set period time near %u: %d (%s)\n", alsa_period_us,
1367                 err, snd_strerror(err));
1368     /* ALSA updates the output variable alsa_period_us */
1369
1370     This->mmdev_period_frames = MulDiv(fmt->nSamplesPerSec,
1371             This->mmdev_period_rt, 10000000);
1372
1373     /* Buffer 4 ALSA periods if large enough, else 4 mmdevapi periods */
1374     This->alsa_bufsize_frames = This->mmdev_period_frames * 4;
1375     if(err < 0 || alsa_period_us < period / 10)
1376         err = snd_pcm_hw_params_set_buffer_size_near(This->pcm_handle,
1377                 This->hw_params, &This->alsa_bufsize_frames);
1378     else{
1379         unsigned int periods = 4;
1380         err = snd_pcm_hw_params_set_periods_near(This->pcm_handle, This->hw_params, &periods, NULL);
1381     }
1382     if(err < 0)
1383         WARN("Unable to set buffer size: %d (%s)\n", err, snd_strerror(err));
1384
1385     if((err = snd_pcm_hw_params(This->pcm_handle, This->hw_params)) < 0){
1386         WARN("Unable to set hw params: %d (%s)\n", err, snd_strerror(err));
1387         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1388         goto exit;
1389     }
1390
1391     if((err = snd_pcm_hw_params_get_period_size(This->hw_params,
1392                     &This->alsa_period_frames, NULL)) < 0){
1393         WARN("Unable to get period size: %d (%s)\n", err, snd_strerror(err));
1394         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1395         goto exit;
1396     }
1397
1398     if((err = snd_pcm_hw_params_get_buffer_size(This->hw_params,
1399                     &This->alsa_bufsize_frames)) < 0){
1400         WARN("Unable to get buffer size: %d (%s)\n", err, snd_strerror(err));
1401         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1402         goto exit;
1403     }
1404
1405     sw_params = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_sw_params_sizeof());
1406     if(!sw_params){
1407         hr = E_OUTOFMEMORY;
1408         goto exit;
1409     }
1410
1411     if((err = snd_pcm_sw_params_current(This->pcm_handle, sw_params)) < 0){
1412         WARN("Unable to get sw_params: %d (%s)\n", err, snd_strerror(err));
1413         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1414         goto exit;
1415     }
1416
1417     if((err = snd_pcm_sw_params_set_start_threshold(This->pcm_handle,
1418                     sw_params, 1)) < 0){
1419         WARN("Unable set start threshold to 1: %d (%s)\n", err, snd_strerror(err));
1420         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1421         goto exit;
1422     }
1423
1424     if((err = snd_pcm_sw_params_set_stop_threshold(This->pcm_handle,
1425                     sw_params, This->alsa_bufsize_frames)) < 0){
1426         WARN("Unable set stop threshold to %lu: %d (%s)\n",
1427                 This->alsa_bufsize_frames, err, snd_strerror(err));
1428         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1429         goto exit;
1430     }
1431
1432     if((err = snd_pcm_sw_params(This->pcm_handle, sw_params)) < 0){
1433         WARN("Unable to set sw params: %d (%s)\n", err, snd_strerror(err));
1434         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1435         goto exit;
1436     }
1437
1438     if((err = snd_pcm_prepare(This->pcm_handle)) < 0){
1439         WARN("Unable to prepare device: %d (%s)\n", err, snd_strerror(err));
1440         hr = AUDCLNT_E_ENDPOINT_CREATE_FAILED;
1441         goto exit;
1442     }
1443
1444     /* Bear in mind weird situations where
1445      * ALSA period (50ms) > mmdevapi buffer (3x10ms)
1446      * or surprising rounding as seen with 22050x8x1 with Pulse:
1447      * ALSA period 220 vs.  221 frames in mmdevapi and
1448      *      buffer 883 vs. 2205 frames in mmdevapi! */
1449     This->bufsize_frames = MulDiv(duration, fmt->nSamplesPerSec, 10000000);
1450     if(mode == AUDCLNT_SHAREMODE_EXCLUSIVE)
1451         This->bufsize_frames -= This->bufsize_frames % This->mmdev_period_frames;
1452     This->hidden_frames = This->alsa_period_frames + This->mmdev_period_frames +
1453         MulDiv(fmt->nSamplesPerSec, EXTRA_SAFE_RT, 10000000);
1454     /* leave no less than about 1.33ms or 256 bytes of data after a rewind */
1455     This->safe_rewind_frames = max(256 / fmt->nBlockAlign, MulDiv(133, fmt->nSamplesPerSec, 100000));
1456
1457     /* Check if the ALSA buffer is so small that it will run out before
1458      * the next MMDevAPI period tick occurs. Allow a little wiggle room
1459      * with 120% of the period time. */
1460     if(This->alsa_bufsize_frames < 1.2 * This->mmdev_period_frames)
1461         FIXME("ALSA buffer time is too small. Expect underruns. (%lu < %u * 1.2)\n",
1462                 This->alsa_bufsize_frames, This->mmdev_period_frames);
1463
1464     This->fmt = clone_format(fmt);
1465     if(!This->fmt){
1466         hr = E_OUTOFMEMORY;
1467         goto exit;
1468     }
1469
1470     This->local_buffer = HeapAlloc(GetProcessHeap(), 0,
1471             This->bufsize_frames * fmt->nBlockAlign);
1472     if(!This->local_buffer){
1473         hr = E_OUTOFMEMORY;
1474         goto exit;
1475     }
1476     silence_buffer(This, This->local_buffer, This->bufsize_frames);
1477
1478     This->silence_buf = HeapAlloc(GetProcessHeap(), 0,
1479             This->alsa_period_frames * This->fmt->nBlockAlign);
1480     if(!This->silence_buf){
1481         hr = E_OUTOFMEMORY;
1482         goto exit;
1483     }
1484     silence_buffer(This, This->silence_buf, This->alsa_period_frames);
1485
1486     This->vols = HeapAlloc(GetProcessHeap(), 0, fmt->nChannels * sizeof(float));
1487     if(!This->vols){
1488         hr = E_OUTOFMEMORY;
1489         goto exit;
1490     }
1491
1492     for(i = 0; i < fmt->nChannels; ++i)
1493         This->vols[i] = 1.f;
1494
1495     This->share = mode;
1496     This->flags = flags;
1497
1498     EnterCriticalSection(&g_sessions_lock);
1499
1500     hr = get_audio_session(sessionguid, This->parent, fmt->nChannels,
1501             &This->session);
1502     if(FAILED(hr)){
1503         LeaveCriticalSection(&g_sessions_lock);
1504         goto exit;
1505     }
1506
1507     list_add_tail(&This->session->clients, &This->entry);
1508
1509     LeaveCriticalSection(&g_sessions_lock);
1510
1511     This->initted = TRUE;
1512
1513     TRACE("ALSA period: %lu frames\n", This->alsa_period_frames);
1514     TRACE("ALSA buffer: %lu frames\n", This->alsa_bufsize_frames);
1515     TRACE("MMDevice period: %u frames\n", This->mmdev_period_frames);
1516     TRACE("MMDevice buffer: %u frames\n", This->bufsize_frames);
1517
1518 exit:
1519     HeapFree(GetProcessHeap(), 0, sw_params);
1520     if(FAILED(hr)){
1521         HeapFree(GetProcessHeap(), 0, This->local_buffer);
1522         This->local_buffer = NULL;
1523         CoTaskMemFree(This->fmt);
1524         This->fmt = NULL;
1525         HeapFree(GetProcessHeap(), 0, This->vols);
1526         This->vols = NULL;
1527     }
1528
1529     LeaveCriticalSection(&This->lock);
1530
1531     return hr;
1532 }
1533
1534 static HRESULT WINAPI AudioClient_GetBufferSize(IAudioClient3 *iface,
1535         UINT32 *out)
1536 {
1537     ACImpl *This = impl_from_IAudioClient3(iface);
1538
1539     TRACE("(%p)->(%p)\n", This, out);
1540
1541     if(!out)
1542         return E_POINTER;
1543
1544     EnterCriticalSection(&This->lock);
1545
1546     if(!This->initted){
1547         LeaveCriticalSection(&This->lock);
1548         return AUDCLNT_E_NOT_INITIALIZED;
1549     }
1550
1551     *out = This->bufsize_frames;
1552
1553     LeaveCriticalSection(&This->lock);
1554
1555     return S_OK;
1556 }
1557
1558 static HRESULT WINAPI AudioClient_GetStreamLatency(IAudioClient3 *iface,
1559         REFERENCE_TIME *latency)
1560 {
1561     ACImpl *This = impl_from_IAudioClient3(iface);
1562
1563     TRACE("(%p)->(%p)\n", This, latency);
1564
1565     if(!latency)
1566         return E_POINTER;
1567
1568     EnterCriticalSection(&This->lock);
1569
1570     if(!This->initted){
1571         LeaveCriticalSection(&This->lock);
1572         return AUDCLNT_E_NOT_INITIALIZED;
1573     }
1574
1575     /* Hide some frames in the ALSA buffer. Allows us to return GetCurrentPadding=0
1576      * yet have enough data left to play (as if it were in native's mixer). Add:
1577      * + mmdevapi_period such that at the end of it, ALSA still has data;
1578      * + EXTRA_SAFE (~4ms) to allow for late callback invocation / fluctuation;
1579      * + alsa_period such that ALSA always has at least one period to play. */
1580     if(This->dataflow == eRender)
1581         *latency = MulDiv(This->hidden_frames, 10000000, This->fmt->nSamplesPerSec);
1582     else
1583         *latency = MulDiv(This->alsa_period_frames, 10000000, This->fmt->nSamplesPerSec)
1584                  + This->mmdev_period_rt;
1585
1586     LeaveCriticalSection(&This->lock);
1587
1588     return S_OK;
1589 }
1590
1591 static HRESULT WINAPI AudioClient_GetCurrentPadding(IAudioClient3 *iface,
1592         UINT32 *out)
1593 {
1594     ACImpl *This = impl_from_IAudioClient3(iface);
1595
1596     TRACE("(%p)->(%p)\n", This, out);
1597
1598     if(!out)
1599         return E_POINTER;
1600
1601     EnterCriticalSection(&This->lock);
1602
1603     if(!This->initted){
1604         LeaveCriticalSection(&This->lock);
1605         return AUDCLNT_E_NOT_INITIALIZED;
1606     }
1607
1608     /* padding is solely updated at callback time in shared mode */
1609     *out = This->held_frames;
1610
1611     LeaveCriticalSection(&This->lock);
1612
1613     TRACE("pad: %u\n", *out);
1614
1615     return S_OK;
1616 }
1617
1618 static HRESULT WINAPI AudioClient_IsFormatSupported(IAudioClient3 *iface,
1619         AUDCLNT_SHAREMODE mode, const WAVEFORMATEX *fmt,
1620         WAVEFORMATEX **out)
1621 {
1622     ACImpl *This = impl_from_IAudioClient3(iface);
1623     snd_pcm_format_mask_t *formats = NULL;
1624     snd_pcm_format_t format;
1625     HRESULT hr = S_OK;
1626     WAVEFORMATEX *closest = NULL;
1627     unsigned int max = 0, min = 0;
1628     int err;
1629     int alsa_channels, alsa_channel_map[32];
1630
1631     TRACE("(%p)->(%x, %p, %p)\n", This, mode, fmt, out);
1632
1633     if(!fmt || (mode == AUDCLNT_SHAREMODE_SHARED && !out))
1634         return E_POINTER;
1635
1636     if(mode != AUDCLNT_SHAREMODE_SHARED && mode != AUDCLNT_SHAREMODE_EXCLUSIVE)
1637         return E_INVALIDARG;
1638
1639     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1640             fmt->cbSize < sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX))
1641         return E_INVALIDARG;
1642
1643     dump_fmt(fmt);
1644
1645     if(out){
1646         *out = NULL;
1647         if(mode != AUDCLNT_SHAREMODE_SHARED)
1648             out = NULL;
1649     }
1650
1651     if(fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1652             (fmt->nAvgBytesPerSec == 0 ||
1653              fmt->nBlockAlign == 0 ||
1654              ((WAVEFORMATEXTENSIBLE*)fmt)->Samples.wValidBitsPerSample > fmt->wBitsPerSample))
1655         return E_INVALIDARG;
1656
1657     if(fmt->nChannels == 0)
1658         return AUDCLNT_E_UNSUPPORTED_FORMAT;
1659
1660     EnterCriticalSection(&This->lock);
1661
1662     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1663         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1664         goto exit;
1665     }
1666
1667     formats = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
1668             snd_pcm_format_mask_sizeof());
1669     if(!formats){
1670         hr = E_OUTOFMEMORY;
1671         goto exit;
1672     }
1673
1674     snd_pcm_hw_params_get_format_mask(This->hw_params, formats);
1675     format = alsa_format(fmt);
1676     if (format == SND_PCM_FORMAT_UNKNOWN ||
1677         !snd_pcm_format_mask_test(formats, format)){
1678         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1679         goto exit;
1680     }
1681
1682     closest = clone_format(fmt);
1683     if(!closest){
1684         hr = E_OUTOFMEMORY;
1685         goto exit;
1686     }
1687
1688     if((err = snd_pcm_hw_params_get_rate_min(This->hw_params, &min, NULL)) < 0){
1689         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1690         WARN("Unable to get min rate: %d (%s)\n", err, snd_strerror(err));
1691         goto exit;
1692     }
1693
1694     if((err = snd_pcm_hw_params_get_rate_max(This->hw_params, &max, NULL)) < 0){
1695         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1696         WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
1697         goto exit;
1698     }
1699
1700     if(fmt->nSamplesPerSec < min || fmt->nSamplesPerSec > max){
1701         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1702         goto exit;
1703     }
1704
1705     if((err = snd_pcm_hw_params_get_channels_min(This->hw_params, &min)) < 0){
1706         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1707         WARN("Unable to get min channels: %d (%s)\n", err, snd_strerror(err));
1708         goto exit;
1709     }
1710
1711     if((err = snd_pcm_hw_params_get_channels_max(This->hw_params, &max)) < 0){
1712         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1713         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
1714         goto exit;
1715     }
1716     if(fmt->nChannels > max){
1717         hr = S_FALSE;
1718         closest->nChannels = max;
1719     }else if(fmt->nChannels < min){
1720         hr = S_FALSE;
1721         closest->nChannels = min;
1722     }
1723
1724     map_channels(This, fmt, &alsa_channels, alsa_channel_map);
1725
1726     if(alsa_channels > max){
1727         hr = S_FALSE;
1728         closest->nChannels = max;
1729     }
1730
1731     if(closest->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
1732         ((WAVEFORMATEXTENSIBLE*)closest)->dwChannelMask = get_channel_mask(closest->nChannels);
1733
1734     if(fmt->nBlockAlign != fmt->nChannels * fmt->wBitsPerSample / 8 ||
1735             fmt->nAvgBytesPerSec != fmt->nBlockAlign * fmt->nSamplesPerSec ||
1736             (fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE &&
1737              ((WAVEFORMATEXTENSIBLE*)fmt)->Samples.wValidBitsPerSample < fmt->wBitsPerSample))
1738         hr = S_FALSE;
1739
1740     if(mode == AUDCLNT_SHAREMODE_EXCLUSIVE &&
1741             fmt->wFormatTag == WAVE_FORMAT_EXTENSIBLE){
1742         if(((WAVEFORMATEXTENSIBLE*)fmt)->dwChannelMask == 0 ||
1743                 ((WAVEFORMATEXTENSIBLE*)fmt)->dwChannelMask & SPEAKER_RESERVED)
1744             hr = S_FALSE;
1745     }
1746
1747 exit:
1748     LeaveCriticalSection(&This->lock);
1749     HeapFree(GetProcessHeap(), 0, formats);
1750
1751     if(hr == S_FALSE && !out)
1752         hr = AUDCLNT_E_UNSUPPORTED_FORMAT;
1753
1754     if(hr == S_FALSE && out) {
1755         closest->nBlockAlign =
1756             closest->nChannels * closest->wBitsPerSample / 8;
1757         closest->nAvgBytesPerSec =
1758             closest->nBlockAlign * closest->nSamplesPerSec;
1759         if(closest->wFormatTag == WAVE_FORMAT_EXTENSIBLE)
1760             ((WAVEFORMATEXTENSIBLE*)closest)->Samples.wValidBitsPerSample = closest->wBitsPerSample;
1761         *out = closest;
1762     } else
1763         CoTaskMemFree(closest);
1764
1765     TRACE("returning: %08x\n", hr);
1766     return hr;
1767 }
1768
1769 static HRESULT WINAPI AudioClient_GetMixFormat(IAudioClient3 *iface,
1770         WAVEFORMATEX **pwfx)
1771 {
1772     ACImpl *This = impl_from_IAudioClient3(iface);
1773     WAVEFORMATEXTENSIBLE *fmt;
1774     snd_pcm_format_mask_t *formats;
1775     unsigned int max_rate, max_channels;
1776     int err;
1777     HRESULT hr = S_OK;
1778
1779     TRACE("(%p)->(%p)\n", This, pwfx);
1780
1781     if(!pwfx)
1782         return E_POINTER;
1783     *pwfx = NULL;
1784
1785     fmt = CoTaskMemAlloc(sizeof(WAVEFORMATEXTENSIBLE));
1786     if(!fmt)
1787         return E_OUTOFMEMORY;
1788
1789     formats = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, snd_pcm_format_mask_sizeof());
1790     if(!formats){
1791         CoTaskMemFree(fmt);
1792         return E_OUTOFMEMORY;
1793     }
1794
1795     EnterCriticalSection(&This->lock);
1796
1797     if((err = snd_pcm_hw_params_any(This->pcm_handle, This->hw_params)) < 0){
1798         WARN("Unable to get hw_params: %d (%s)\n", err, snd_strerror(err));
1799         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1800         goto exit;
1801     }
1802
1803     snd_pcm_hw_params_get_format_mask(This->hw_params, formats);
1804
1805     fmt->Format.wFormatTag = WAVE_FORMAT_EXTENSIBLE;
1806     if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_FLOAT_LE)){
1807         fmt->Format.wBitsPerSample = 32;
1808         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_IEEE_FLOAT;
1809     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S16_LE)){
1810         fmt->Format.wBitsPerSample = 16;
1811         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1812     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_U8)){
1813         fmt->Format.wBitsPerSample = 8;
1814         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1815     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S32_LE)){
1816         fmt->Format.wBitsPerSample = 32;
1817         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1818     }else if(snd_pcm_format_mask_test(formats, SND_PCM_FORMAT_S24_3LE)){
1819         fmt->Format.wBitsPerSample = 24;
1820         fmt->SubFormat = KSDATAFORMAT_SUBTYPE_PCM;
1821     }else{
1822         ERR("Didn't recognize any available ALSA formats\n");
1823         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1824         goto exit;
1825     }
1826
1827     if((err = snd_pcm_hw_params_get_channels_max(This->hw_params,
1828                     &max_channels)) < 0){
1829         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
1830         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1831         goto exit;
1832     }
1833
1834     if(max_channels > 6)
1835         fmt->Format.nChannels = 2;
1836     else
1837         fmt->Format.nChannels = max_channels;
1838
1839     if(fmt->Format.nChannels > 1 && (fmt->Format.nChannels & 0x1)){
1840         /* For most hardware on Windows, users must choose a configuration with an even
1841          * number of channels (stereo, quad, 5.1, 7.1). Users can then disable
1842          * channels, but those channels are still reported to applications from
1843          * GetMixFormat! Some applications behave badly if given an odd number of
1844          * channels (e.g. 2.1). */
1845
1846         if(fmt->Format.nChannels < max_channels)
1847             fmt->Format.nChannels += 1;
1848         else
1849             /* We could "fake" more channels and downmix the emulated channels,
1850              * but at that point you really ought to tweak your ALSA setup or
1851              * just use PulseAudio. */
1852             WARN("Some Windows applications behave badly with an odd number of channels (%u)!\n", fmt->Format.nChannels);
1853     }
1854
1855     fmt->dwChannelMask = get_channel_mask(fmt->Format.nChannels);
1856
1857     if((err = snd_pcm_hw_params_get_rate_max(This->hw_params, &max_rate,
1858                     NULL)) < 0){
1859         WARN("Unable to get max rate: %d (%s)\n", err, snd_strerror(err));
1860         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1861         goto exit;
1862     }
1863
1864     if(max_rate >= 48000)
1865         fmt->Format.nSamplesPerSec = 48000;
1866     else if(max_rate >= 44100)
1867         fmt->Format.nSamplesPerSec = 44100;
1868     else if(max_rate >= 22050)
1869         fmt->Format.nSamplesPerSec = 22050;
1870     else if(max_rate >= 11025)
1871         fmt->Format.nSamplesPerSec = 11025;
1872     else if(max_rate >= 8000)
1873         fmt->Format.nSamplesPerSec = 8000;
1874     else{
1875         ERR("Unknown max rate: %u\n", max_rate);
1876         hr = AUDCLNT_E_DEVICE_INVALIDATED;
1877         goto exit;
1878     }
1879
1880     fmt->Format.nBlockAlign = (fmt->Format.wBitsPerSample *
1881             fmt->Format.nChannels) / 8;
1882     fmt->Format.nAvgBytesPerSec = fmt->Format.nSamplesPerSec *
1883         fmt->Format.nBlockAlign;
1884
1885     fmt->Samples.wValidBitsPerSample = fmt->Format.wBitsPerSample;
1886     fmt->Format.cbSize = sizeof(WAVEFORMATEXTENSIBLE) - sizeof(WAVEFORMATEX);
1887
1888     dump_fmt((WAVEFORMATEX*)fmt);
1889     *pwfx = (WAVEFORMATEX*)fmt;
1890
1891 exit:
1892     LeaveCriticalSection(&This->lock);
1893     if(FAILED(hr))
1894         CoTaskMemFree(fmt);
1895     HeapFree(GetProcessHeap(), 0, formats);
1896
1897     return hr;
1898 }
1899
1900 static HRESULT WINAPI AudioClient_GetDevicePeriod(IAudioClient3 *iface,
1901         REFERENCE_TIME *defperiod, REFERENCE_TIME *minperiod)
1902 {
1903     ACImpl *This = impl_from_IAudioClient3(iface);
1904
1905     TRACE("(%p)->(%p, %p)\n", This, defperiod, minperiod);
1906
1907     if(!defperiod && !minperiod)
1908         return E_POINTER;
1909
1910     if(defperiod)
1911         *defperiod = DefaultPeriod;
1912     if(minperiod)
1913         *minperiod = DefaultPeriod;
1914
1915     return S_OK;
1916 }
1917
1918 static BYTE *remap_channels(ACImpl *This, BYTE *buf, snd_pcm_uframes_t frames)
1919 {
1920     snd_pcm_uframes_t i;
1921     UINT c;
1922     UINT bytes_per_sample = This->fmt->wBitsPerSample / 8;
1923
1924     if(!This->need_remapping)
1925         return buf;
1926
1927     if(!This->remapping_buf){
1928         This->remapping_buf = HeapAlloc(GetProcessHeap(), 0,
1929                 bytes_per_sample * This->alsa_channels * frames);
1930         This->remapping_buf_frames = frames;
1931     }else if(This->remapping_buf_frames < frames){
1932         This->remapping_buf = HeapReAlloc(GetProcessHeap(), 0, This->remapping_buf,
1933                 bytes_per_sample * This->alsa_channels * frames);
1934         This->remapping_buf_frames = frames;
1935     }
1936
1937     snd_pcm_format_set_silence(This->alsa_format, This->remapping_buf,
1938             frames * This->alsa_channels);
1939
1940     switch(This->fmt->wBitsPerSample){
1941     case 8: {
1942             UINT8 *tgt_buf, *src_buf;
1943             tgt_buf = This->remapping_buf;
1944             src_buf = buf;
1945             for(i = 0; i < frames; ++i){
1946                 for(c = 0; c < This->fmt->nChannels; ++c)
1947                     tgt_buf[This->alsa_channel_map[c]] = src_buf[c];
1948                 tgt_buf += This->alsa_channels;
1949                 src_buf += This->fmt->nChannels;
1950             }
1951             break;
1952         }
1953     case 16: {
1954             UINT16 *tgt_buf, *src_buf;
1955             tgt_buf = (UINT16*)This->remapping_buf;
1956             src_buf = (UINT16*)buf;
1957             for(i = 0; i < frames; ++i){
1958                 for(c = 0; c < This->fmt->nChannels; ++c)
1959                     tgt_buf[This->alsa_channel_map[c]] = src_buf[c];
1960                 tgt_buf += This->alsa_channels;
1961                 src_buf += This->fmt->nChannels;
1962             }
1963         }
1964         break;
1965     case 32: {
1966             UINT32 *tgt_buf, *src_buf;
1967             tgt_buf = (UINT32*)This->remapping_buf;
1968             src_buf = (UINT32*)buf;
1969             for(i = 0; i < frames; ++i){
1970                 for(c = 0; c < This->fmt->nChannels; ++c)
1971                     tgt_buf[This->alsa_channel_map[c]] = src_buf[c];
1972                 tgt_buf += This->alsa_channels;
1973                 src_buf += This->fmt->nChannels;
1974             }
1975         }
1976         break;
1977     default: {
1978             BYTE *tgt_buf, *src_buf;
1979             tgt_buf = This->remapping_buf;
1980             src_buf = buf;
1981             for(i = 0; i < frames; ++i){
1982                 for(c = 0; c < This->fmt->nChannels; ++c)
1983                     memcpy(&tgt_buf[This->alsa_channel_map[c] * bytes_per_sample],
1984                             &src_buf[c * bytes_per_sample], bytes_per_sample);
1985                 tgt_buf += This->alsa_channels * bytes_per_sample;
1986                 src_buf += This->fmt->nChannels * bytes_per_sample;
1987             }
1988         }
1989         break;
1990     }
1991
1992     return This->remapping_buf;
1993 }
1994
1995 static void adjust_buffer_volume(const ACImpl *This, BYTE *buf, snd_pcm_uframes_t frames, BOOL mute)
1996 {
1997     float vol[ARRAY_SIZE(This->alsa_channel_map)];
1998     BOOL adjust = FALSE;
1999     UINT32 i, channels;
2000     BYTE *end;
2001
2002     if (This->vol_adjusted_frames >= frames)
2003         return;
2004     channels = This->fmt->nChannels;
2005
2006     if (mute)
2007     {
2008         int err = snd_pcm_format_set_silence(This->alsa_format, buf, frames * channels);
2009         if (err < 0)
2010             WARN("Setting buffer to silence failed: %d (%s)\n", err, snd_strerror(err));
2011         return;
2012     }
2013
2014     /* Adjust the buffer based on the volume for each channel */
2015     for (i = 0; i < channels; i++)
2016         vol[i] = This->vols[i] * This->session->master_vol;
2017     for (i = 0; i < min(channels, This->session->channel_count); i++)
2018     {
2019         vol[i] *= This->session->channel_vols[i];
2020         adjust |= vol[i] != 1.0f;
2021     }
2022     while (i < channels) adjust |= vol[i++] != 1.0f;
2023     if (!adjust) return;
2024
2025     /* Skip the frames we've already adjusted before */
2026     end = buf + frames * This->fmt->nBlockAlign;
2027     buf += This->vol_adjusted_frames * This->fmt->nBlockAlign;
2028
2029     switch (This->alsa_format)
2030     {
2031 #ifndef WORDS_BIGENDIAN
2032 #define PROCESS_BUFFER(type) do         \
2033 {                                       \
2034     type *p = (type*)buf;               \
2035     do                                  \
2036     {                                   \
2037         for (i = 0; i < channels; i++)  \
2038             p[i] = p[i] * vol[i];       \
2039         p += i;                         \
2040     } while ((BYTE*)p != end);          \
2041 } while (0)
2042     case SND_PCM_FORMAT_S16_LE:
2043         PROCESS_BUFFER(INT16);
2044         break;
2045     case SND_PCM_FORMAT_S32_LE:
2046         PROCESS_BUFFER(INT32);
2047         break;
2048     case SND_PCM_FORMAT_FLOAT_LE:
2049         PROCESS_BUFFER(float);
2050         break;
2051     case SND_PCM_FORMAT_FLOAT64_LE:
2052         PROCESS_BUFFER(double);
2053         break;
2054 #undef PROCESS_BUFFER
2055     case SND_PCM_FORMAT_S20_3LE:
2056     case SND_PCM_FORMAT_S24_3LE:
2057     {
2058         /* Do it 12 bytes at a time until it is no longer possible */
2059         UINT32 *q = (UINT32*)buf, mask = ~0xff;
2060         BYTE *p;
2061
2062         /* After we adjust the volume, we need to mask out low bits */
2063         if (This->alsa_format == SND_PCM_FORMAT_S20_3LE)
2064             mask = ~0x0fff;
2065
2066         i = 0;
2067         while (end - (BYTE*)q >= 12)
2068         {
2069             UINT32 v[4], k;
2070             v[0] = q[0] << 8;
2071             v[1] = q[1] << 16 | (q[0] >> 16 & ~0xff);
2072             v[2] = q[2] << 24 | (q[1] >> 8  & ~0xff);
2073             v[3] = q[2] & ~0xff;
2074             for (k = 0; k < 4; k++)
2075             {
2076                 v[k] = (INT32)((INT32)v[k] * vol[i]);
2077                 v[k] &= mask;
2078                 if (++i == channels) i = 0;
2079             }
2080             *q++ = v[0] >> 8  | v[1] << 16;
2081             *q++ = v[1] >> 16 | v[2] << 8;
2082             *q++ = v[2] >> 24 | v[3];
2083         }
2084         p = (BYTE*)q;
2085         while (p != end)
2086         {
2087             UINT32 v = (INT32)((INT32)(p[0] << 8 | p[1] << 16 | p[2] << 24) * vol[i]);
2088             v &= mask;
2089             *p++ = v >> 8  & 0xff;
2090             *p++ = v >> 16 & 0xff;
2091             *p++ = v >> 24;
2092             if (++i == channels) i = 0;
2093         }
2094         break;
2095     }
2096 #endif
2097     case SND_PCM_FORMAT_U8:
2098     {
2099         UINT8 *p = (UINT8*)buf;
2100         do
2101         {
2102             for (i = 0; i < channels; i++)
2103                 p[i] = (int)((p[i] - 128) * vol[i]) + 128;
2104             p += i;
2105         } while ((BYTE*)p != end);
2106         break;
2107     }
2108     default:
2109         TRACE("Unhandled format %i, not adjusting volume.\n", This->alsa_format);
2110         break;
2111     }
2112 }
2113
2114 static snd_pcm_sframes_t alsa_write_best_effort(ACImpl *This, BYTE *buf,
2115         snd_pcm_uframes_t frames, BOOL mute)
2116 {
2117     snd_pcm_sframes_t written;
2118
2119     adjust_buffer_volume(This, buf, frames, mute);
2120
2121     /* Mark the frames we've already adjusted */
2122     if (This->vol_adjusted_frames < frames)
2123         This->vol_adjusted_frames = frames;
2124
2125     buf = remap_channels(This, buf, frames);
2126
2127     written = snd_pcm_writei(This->pcm_handle, buf, frames);
2128     if(written < 0){
2129         int ret;
2130
2131         if(written == -EAGAIN)
2132             /* buffer full */
2133             return 0;
2134
2135         WARN("writei failed, recovering: %ld (%s)\n", written,
2136                 snd_strerror(written));
2137
2138         ret = snd_pcm_recover(This->pcm_handle, written, 0);
2139         if(ret < 0){
2140             WARN("Could not recover: %d (%s)\n", ret, snd_strerror(ret));
2141             return ret;
2142         }
2143
2144         written = snd_pcm_writei(This->pcm_handle, buf, frames);
2145     }
2146
2147     if (written > 0)
2148         This->vol_adjusted_frames -= written;
2149     return written;
2150 }
2151
2152 static snd_pcm_sframes_t alsa_write_buffer_wrap(ACImpl *This, BYTE *buf,
2153         snd_pcm_uframes_t buflen, snd_pcm_uframes_t offs,
2154         snd_pcm_uframes_t to_write)
2155 {
2156     snd_pcm_sframes_t ret = 0;
2157
2158     while(to_write){
2159         snd_pcm_uframes_t chunk;
2160         snd_pcm_sframes_t tmp;
2161
2162         if(offs + to_write > buflen)
2163             chunk = buflen - offs;
2164         else
2165             chunk = to_write;
2166
2167         tmp = alsa_write_best_effort(This, buf + offs * This->fmt->nBlockAlign, chunk, This->session->mute);
2168         if(tmp < 0)
2169             return ret;
2170         if(!tmp)
2171             break;
2172
2173         ret += tmp;
2174         to_write -= tmp;
2175         offs += tmp;
2176         offs %= buflen;
2177     }
2178
2179     return ret;
2180 }
2181
2182 static UINT buf_ptr_diff(UINT left, UINT right, UINT bufsize)
2183 {
2184     if(left <= right)
2185         return right - left;
2186     return bufsize - (left - right);
2187 }
2188
2189 static UINT data_not_in_alsa(ACImpl *This)
2190 {
2191     UINT32 diff;
2192
2193     diff = buf_ptr_diff(This->lcl_offs_frames, This->wri_offs_frames, This->bufsize_frames);
2194     if(diff)
2195         return diff;
2196
2197     return This->held_frames - This->data_in_alsa_frames;
2198 }
2199 /* Here's the buffer setup:
2200  *
2201  *  vvvvvvvv sent to HW already
2202  *          vvvvvvvv in ALSA buffer but rewindable
2203  * [dddddddddddddddd] ALSA buffer
2204  *         [dddddddddddddddd--------] mmdevapi buffer
2205  *          ^^^^^^^^ data_in_alsa_frames
2206  *          ^^^^^^^^^^^^^^^^ held_frames
2207  *                  ^ lcl_offs_frames
2208  *                          ^ wri_offs_frames
2209  *
2210  * GetCurrentPadding is held_frames
2211  *
2212  * During period callback, we decrement held_frames, fill ALSA buffer, and move
2213  *   lcl_offs forward
2214  *
2215  * During Stop, we rewind the ALSA buffer
2216  */
2217 static void alsa_write_data(ACImpl *This)
2218 {
2219     snd_pcm_sframes_t written;
2220     snd_pcm_uframes_t avail, max_copy_frames, data_frames_played;
2221     int err;
2222
2223     /* this call seems to be required to get an accurate snd_pcm_state() */
2224     avail = snd_pcm_avail_update(This->pcm_handle);
2225
2226     if(snd_pcm_state(This->pcm_handle) == SND_PCM_STATE_XRUN){
2227         TRACE("XRun state, recovering\n");
2228
2229         avail = This->alsa_bufsize_frames;
2230
2231         if((err = snd_pcm_recover(This->pcm_handle, -EPIPE, 1)) < 0)
2232             WARN("snd_pcm_recover failed: %d (%s)\n", err, snd_strerror(err));
2233
2234         if((err = snd_pcm_reset(This->pcm_handle)) < 0)
2235             WARN("snd_pcm_reset failed: %d (%s)\n", err, snd_strerror(err));
2236
2237         if((err = snd_pcm_prepare(This->pcm_handle)) < 0)
2238             WARN("snd_pcm_prepare failed: %d (%s)\n", err, snd_strerror(err));
2239     }
2240
2241     TRACE("avail: %ld\n", avail);
2242
2243     /* Add a lead-in when starting with too few frames to ensure
2244      * continuous rendering.  Additional benefit: Force ALSA to start. */
2245     if(This->data_in_alsa_frames == 0 && This->held_frames < This->alsa_period_frames)
2246     {
2247         alsa_write_best_effort(This, This->silence_buf, This->alsa_period_frames - This->held_frames, FALSE);
2248         This->vol_adjusted_frames = 0;
2249     }
2250
2251     if(This->started)
2252         max_copy_frames = data_not_in_alsa(This);
2253     else
2254         max_copy_frames = 0;
2255
2256     data_frames_played = min(This->data_in_alsa_frames, avail);
2257     This->data_in_alsa_frames -= data_frames_played;
2258
2259     if(This->held_frames > data_frames_played){
2260         if(This->started)
2261             This->held_frames -= data_frames_played;
2262     }else
2263         This->held_frames = 0;
2264
2265     while(avail && max_copy_frames){
2266         snd_pcm_uframes_t to_write;
2267
2268         to_write = min(avail, max_copy_frames);
2269
2270         written = alsa_write_buffer_wrap(This, This->local_buffer,
2271                 This->bufsize_frames, This->lcl_offs_frames, to_write);
2272         if(written <= 0)
2273             break;
2274
2275         avail -= written;
2276         This->lcl_offs_frames += written;
2277         This->lcl_offs_frames %= This->bufsize_frames;
2278         This->data_in_alsa_frames += written;
2279         max_copy_frames -= written;
2280     }
2281
2282     if(This->event)
2283         SetEvent(This->event);
2284 }
2285
2286 static void alsa_read_data(ACImpl *This)
2287 {
2288     snd_pcm_sframes_t nread;
2289     UINT32 pos = This->wri_offs_frames, limit = This->held_frames;
2290
2291     if(!This->started)
2292         goto exit;
2293
2294     /* FIXME: Detect overrun and signal DATA_DISCONTINUITY
2295      * How to count overrun frames and report them as position increase? */
2296     limit = This->bufsize_frames - max(limit, pos);
2297
2298     nread = snd_pcm_readi(This->pcm_handle,
2299             This->local_buffer + pos * This->fmt->nBlockAlign, limit);
2300     TRACE("read %ld from %u limit %u\n", nread, pos, limit);
2301     if(nread < 0){
2302         int ret;
2303
2304         if(nread == -EAGAIN) /* no data yet */
2305             return;
2306
2307         WARN("read failed, recovering: %ld (%s)\n", nread, snd_strerror(nread));
2308
2309         ret = snd_pcm_recover(This->pcm_handle, nread, 0);
2310         if(ret < 0){
2311             WARN("Recover failed: %d (%s)\n", ret, snd_strerror(ret));
2312             return;
2313         }
2314
2315         nread = snd_pcm_readi(This->pcm_handle,
2316                 This->local_buffer + pos * This->fmt->nBlockAlign, limit);
2317         if(nread < 0){
2318             WARN("read failed: %ld (%s)\n", nread, snd_strerror(nread));
2319             return;
2320         }
2321     }
2322
2323     if(This->session->mute){
2324         int err;
2325         if((err = snd_pcm_format_set_silence(This->alsa_format,
2326                         This->local_buffer + pos * This->fmt->nBlockAlign,
2327                         nread)) < 0)
2328             WARN("Setting buffer to silence failed: %d (%s)\n", err,
2329                     snd_strerror(err));
2330     }
2331
2332     This->wri_offs_frames += nread;
2333     This->wri_offs_frames %= This->bufsize_frames;
2334     This->held_frames += nread;
2335
2336 exit:
2337     if(This->event)
2338         SetEvent(This->event);
2339 }
2340
2341 static void CALLBACK alsa_push_buffer_data(void *user, BOOLEAN timer)
2342 {
2343     ACImpl *This = user;
2344
2345     EnterCriticalSection(&This->lock);
2346
2347     QueryPerformanceCounter(&This->last_period_time);
2348
2349     if(This->dataflow == eRender)
2350         alsa_write_data(This);
2351     else if(This->dataflow == eCapture)
2352         alsa_read_data(This);
2353
2354     LeaveCriticalSection(&This->lock);
2355 }
2356
2357 static snd_pcm_uframes_t interp_elapsed_frames(ACImpl *This)
2358 {
2359     LARGE_INTEGER time_freq, current_time, time_diff;
2360     QueryPerformanceFrequency(&time_freq);
2361     QueryPerformanceCounter(&current_time);
2362     time_diff.QuadPart = current_time.QuadPart - This->last_period_time.QuadPart;
2363     return MulDiv(time_diff.QuadPart, This->fmt->nSamplesPerSec, time_freq.QuadPart);
2364 }
2365
2366 static int alsa_rewind_best_effort(ACImpl *This)
2367 {
2368     snd_pcm_uframes_t len, leave;
2369
2370     /* we can't use snd_pcm_rewindable, some PCM devices crash. so follow
2371      * PulseAudio's example and rewind as much data as we believe is in the
2372      * buffer, minus 1.33ms for safety. */
2373
2374     /* amount of data to leave in ALSA buffer */
2375     leave = interp_elapsed_frames(This) + This->safe_rewind_frames;
2376
2377     if(This->held_frames < leave)
2378         This->held_frames = 0;
2379     else
2380         This->held_frames -= leave;
2381
2382     if(This->data_in_alsa_frames < leave)
2383         len = 0;
2384     else
2385         len = This->data_in_alsa_frames - leave;
2386
2387     TRACE("rewinding %lu frames, now held %u\n", len, This->held_frames);
2388
2389     if(len)
2390         /* snd_pcm_rewind return value is often broken, assume it succeeded */
2391         snd_pcm_rewind(This->pcm_handle, len);
2392
2393     This->data_in_alsa_frames = 0;
2394
2395     return len;
2396 }
2397
2398 static HRESULT WINAPI AudioClient_Start(IAudioClient3 *iface)
2399 {
2400     ACImpl *This = impl_from_IAudioClient3(iface);
2401
2402     TRACE("(%p)\n", This);
2403
2404     EnterCriticalSection(&This->lock);
2405
2406     if(!This->initted){
2407         LeaveCriticalSection(&This->lock);
2408         return AUDCLNT_E_NOT_INITIALIZED;
2409     }
2410
2411     if((This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK) && !This->event){
2412         LeaveCriticalSection(&This->lock);
2413         return AUDCLNT_E_EVENTHANDLE_NOT_SET;
2414     }
2415
2416     if(This->started){
2417         LeaveCriticalSection(&This->lock);
2418         return AUDCLNT_E_NOT_STOPPED;
2419     }
2420
2421     if(This->dataflow == eCapture){
2422         /* dump any data that might be leftover in the ALSA capture buffer */
2423         snd_pcm_readi(This->pcm_handle, This->local_buffer,
2424                 This->bufsize_frames);
2425     }else{
2426         snd_pcm_sframes_t avail, written;
2427         snd_pcm_uframes_t offs;
2428
2429         avail = snd_pcm_avail_update(This->pcm_handle);
2430         avail = min(avail, This->held_frames);
2431
2432         if(This->wri_offs_frames < This->held_frames)
2433             offs = This->bufsize_frames - This->held_frames + This->wri_offs_frames;
2434         else
2435             offs = This->wri_offs_frames - This->held_frames;
2436
2437         /* fill it with data */
2438         written = alsa_write_buffer_wrap(This, This->local_buffer,
2439                 This->bufsize_frames, offs, avail);
2440
2441         if(written > 0){
2442             This->lcl_offs_frames = (offs + written) % This->bufsize_frames;
2443             This->data_in_alsa_frames = written;
2444         }else{
2445             This->lcl_offs_frames = offs;
2446             This->data_in_alsa_frames = 0;
2447         }
2448     }
2449
2450     if(!This->timer){
2451         if(!CreateTimerQueueTimer(&This->timer, g_timer_q, alsa_push_buffer_data,
2452                 This, 0, This->mmdev_period_rt / 10000, WT_EXECUTEINTIMERTHREAD)){
2453             LeaveCriticalSection(&This->lock);
2454             WARN("Unable to create timer: %u\n", GetLastError());
2455             return E_OUTOFMEMORY;
2456         }
2457     }
2458
2459     This->started = TRUE;
2460
2461     LeaveCriticalSection(&This->lock);
2462
2463     return S_OK;
2464 }
2465
2466 static HRESULT WINAPI AudioClient_Stop(IAudioClient3 *iface)
2467 {
2468     ACImpl *This = impl_from_IAudioClient3(iface);
2469
2470     TRACE("(%p)\n", This);
2471
2472     EnterCriticalSection(&This->lock);
2473
2474     if(!This->initted){
2475         LeaveCriticalSection(&This->lock);
2476         return AUDCLNT_E_NOT_INITIALIZED;
2477     }
2478
2479     if(!This->started){
2480         LeaveCriticalSection(&This->lock);
2481         return S_FALSE;
2482     }
2483
2484     if(This->dataflow == eRender)
2485         alsa_rewind_best_effort(This);
2486
2487     This->started = FALSE;
2488
2489     LeaveCriticalSection(&This->lock);
2490
2491     return S_OK;
2492 }
2493
2494 static HRESULT WINAPI AudioClient_Reset(IAudioClient3 *iface)
2495 {
2496     ACImpl *This = impl_from_IAudioClient3(iface);
2497
2498     TRACE("(%p)\n", This);
2499
2500     EnterCriticalSection(&This->lock);
2501
2502     if(!This->initted){
2503         LeaveCriticalSection(&This->lock);
2504         return AUDCLNT_E_NOT_INITIALIZED;
2505     }
2506
2507     if(This->started){
2508         LeaveCriticalSection(&This->lock);
2509         return AUDCLNT_E_NOT_STOPPED;
2510     }
2511
2512     if(This->getbuf_last){
2513         LeaveCriticalSection(&This->lock);
2514         return AUDCLNT_E_BUFFER_OPERATION_PENDING;
2515     }
2516
2517     if(snd_pcm_drop(This->pcm_handle) < 0)
2518         WARN("snd_pcm_drop failed\n");
2519
2520     if(snd_pcm_reset(This->pcm_handle) < 0)
2521         WARN("snd_pcm_reset failed\n");
2522
2523     if(snd_pcm_prepare(This->pcm_handle) < 0)
2524         WARN("snd_pcm_prepare failed\n");
2525
2526     if(This->dataflow == eRender){
2527         This->written_frames = 0;
2528         This->last_pos_frames = 0;
2529     }else{
2530         This->written_frames += This->held_frames;
2531     }
2532     This->held_frames = 0;
2533     This->lcl_offs_frames = 0;
2534     This->wri_offs_frames = 0;
2535
2536     LeaveCriticalSection(&This->lock);
2537
2538     return S_OK;
2539 }
2540
2541 static HRESULT WINAPI AudioClient_SetEventHandle(IAudioClient3 *iface,
2542         HANDLE event)
2543 {
2544     ACImpl *This = impl_from_IAudioClient3(iface);
2545
2546     TRACE("(%p)->(%p)\n", This, event);
2547
2548     if(!event)
2549         return E_INVALIDARG;
2550
2551     EnterCriticalSection(&This->lock);
2552
2553     if(!This->initted){
2554         LeaveCriticalSection(&This->lock);
2555         return AUDCLNT_E_NOT_INITIALIZED;
2556     }
2557
2558     if(!(This->flags & AUDCLNT_STREAMFLAGS_EVENTCALLBACK)){
2559         LeaveCriticalSection(&This->lock);
2560         return AUDCLNT_E_EVENTHANDLE_NOT_EXPECTED;
2561     }
2562
2563     if (This->event){
2564         LeaveCriticalSection(&This->lock);
2565         FIXME("called twice\n");
2566         return HRESULT_FROM_WIN32(ERROR_INVALID_NAME);
2567     }
2568
2569     This->event = event;
2570
2571     LeaveCriticalSection(&This->lock);
2572
2573     return S_OK;
2574 }
2575
2576 static HRESULT WINAPI AudioClient_GetService(IAudioClient3 *iface, REFIID riid,
2577         void **ppv)
2578 {
2579     ACImpl *This = impl_from_IAudioClient3(iface);
2580
2581     TRACE("(%p)->(%s, %p)\n", This, debugstr_guid(riid), ppv);
2582
2583     if(!ppv)
2584         return E_POINTER;
2585     *ppv = NULL;
2586
2587     EnterCriticalSection(&This->lock);
2588
2589     if(!This->initted){
2590         LeaveCriticalSection(&This->lock);
2591         return AUDCLNT_E_NOT_INITIALIZED;
2592     }
2593
2594     if(IsEqualIID(riid, &IID_IAudioRenderClient)){
2595         if(This->dataflow != eRender){
2596             LeaveCriticalSection(&This->lock);
2597             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
2598         }
2599         IAudioRenderClient_AddRef(&This->IAudioRenderClient_iface);
2600         *ppv = &This->IAudioRenderClient_iface;
2601     }else if(IsEqualIID(riid, &IID_IAudioCaptureClient)){
2602         if(This->dataflow != eCapture){
2603             LeaveCriticalSection(&This->lock);
2604             return AUDCLNT_E_WRONG_ENDPOINT_TYPE;
2605         }
2606         IAudioCaptureClient_AddRef(&This->IAudioCaptureClient_iface);
2607         *ppv = &This->IAudioCaptureClient_iface;
2608     }else if(IsEqualIID(riid, &IID_IAudioClock)){
2609         IAudioClock_AddRef(&This->IAudioClock_iface);
2610         *ppv = &This->IAudioClock_iface;
2611     }else if(IsEqualIID(riid, &IID_IAudioStreamVolume)){
2612         IAudioStreamVolume_AddRef(&This->IAudioStreamVolume_iface);
2613         *ppv = &This->IAudioStreamVolume_iface;
2614     }else if(IsEqualIID(riid, &IID_IAudioSessionControl)){
2615         if(!This->session_wrapper){
2616             This->session_wrapper = AudioSessionWrapper_Create(This);
2617             if(!This->session_wrapper){
2618                 LeaveCriticalSection(&This->lock);
2619                 return E_OUTOFMEMORY;
2620             }
2621         }else
2622             IAudioSessionControl2_AddRef(&This->session_wrapper->IAudioSessionControl2_iface);
2623
2624         *ppv = &This->session_wrapper->IAudioSessionControl2_iface;
2625     }else if(IsEqualIID(riid, &IID_IChannelAudioVolume)){
2626         if(!This->session_wrapper){
2627             This->session_wrapper = AudioSessionWrapper_Create(This);
2628             if(!This->session_wrapper){
2629                 LeaveCriticalSection(&This->lock);
2630                 return E_OUTOFMEMORY;
2631             }
2632         }else
2633             IChannelAudioVolume_AddRef(&This->session_wrapper->IChannelAudioVolume_iface);
2634
2635         *ppv = &This->session_wrapper->IChannelAudioVolume_iface;
2636     }else if(IsEqualIID(riid, &IID_ISimpleAudioVolume)){
2637         if(!This->session_wrapper){
2638             This->session_wrapper = AudioSessionWrapper_Create(This);
2639             if(!This->session_wrapper){
2640                 LeaveCriticalSection(&This->lock);
2641                 return E_OUTOFMEMORY;
2642             }
2643         }else
2644             ISimpleAudioVolume_AddRef(&This->session_wrapper->ISimpleAudioVolume_iface);
2645
2646         *ppv = &This->session_wrapper->ISimpleAudioVolume_iface;
2647     }
2648
2649     if(*ppv){
2650         LeaveCriticalSection(&This->lock);
2651         return S_OK;
2652     }
2653
2654     LeaveCriticalSection(&This->lock);
2655
2656     FIXME("stub %s\n", debugstr_guid(riid));
2657     return E_NOINTERFACE;
2658 }
2659
2660 static HRESULT WINAPI AudioClient_IsOffloadCapable(IAudioClient3 *iface,
2661         AUDIO_STREAM_CATEGORY category, BOOL *offload_capable)
2662 {
2663     ACImpl *This = impl_from_IAudioClient3(iface);
2664
2665     TRACE("(%p)->(0x%x, %p)\n", This, category, offload_capable);
2666
2667     if(!offload_capable)
2668         return E_INVALIDARG;
2669
2670     *offload_capable = FALSE;
2671
2672     return S_OK;
2673 }
2674
2675 static HRESULT WINAPI AudioClient_SetClientProperties(IAudioClient3 *iface,
2676         const AudioClientProperties *prop)
2677 {
2678     ACImpl *This = impl_from_IAudioClient3(iface);
2679
2680     TRACE("(%p)->(%p)\n", This, prop);
2681
2682     if(!prop)
2683         return E_POINTER;
2684
2685     if(prop->cbSize != sizeof(*prop))
2686         return E_INVALIDARG;
2687
2688     TRACE("{ bIsOffload: %u, eCategory: 0x%x, Options: 0x%x }\n",
2689             prop->bIsOffload,
2690             prop->eCategory,
2691             prop->Options);
2692
2693     if(prop->bIsOffload)
2694         return AUDCLNT_E_ENDPOINT_OFFLOAD_NOT_CAPABLE;
2695
2696     return S_OK;
2697 }
2698
2699 static HRESULT WINAPI AudioClient_GetBufferSizeLimits(IAudioClient3 *iface,
2700         const WAVEFORMATEX *format, BOOL event_driven, REFERENCE_TIME *min_duration,
2701         REFERENCE_TIME *max_duration)
2702 {
2703     ACImpl *This = impl_from_IAudioClient3(iface);
2704
2705     FIXME("(%p)->(%p, %u, %p, %p)\n", This, format, event_driven, min_duration, max_duration);
2706
2707     return E_NOTIMPL;
2708 }
2709
2710 static HRESULT WINAPI AudioClient_GetSharedModeEnginePeriod(IAudioClient3 *iface,
2711         const WAVEFORMATEX *format, UINT32 *default_period_frames, UINT32 *unit_period_frames,
2712         UINT32 *min_period_frames, UINT32 *max_period_frames)
2713 {
2714     ACImpl *This = impl_from_IAudioClient3(iface);
2715
2716     FIXME("(%p)->(%p, %p, %p, %p, %p)\n", This, format, default_period_frames, unit_period_frames,
2717             min_period_frames, max_period_frames);
2718
2719     return E_NOTIMPL;
2720 }
2721
2722 static HRESULT WINAPI AudioClient_GetCurrentSharedModeEnginePeriod(IAudioClient3 *iface,
2723         WAVEFORMATEX **cur_format, UINT32 *cur_period_frames)
2724 {
2725     ACImpl *This = impl_from_IAudioClient3(iface);
2726
2727     FIXME("(%p)->(%p, %p)\n", This, cur_format, cur_period_frames);
2728
2729     return E_NOTIMPL;
2730 }
2731
2732 static HRESULT WINAPI AudioClient_InitializeSharedAudioStream(IAudioClient3 *iface,
2733         DWORD flags, UINT32 period_frames, const WAVEFORMATEX *format,
2734         const GUID *session_guid)
2735 {
2736     ACImpl *This = impl_from_IAudioClient3(iface);
2737
2738     FIXME("(%p)->(0x%x, %u, %p, %s)\n", This, flags, period_frames, format, debugstr_guid(session_guid));
2739
2740     return E_NOTIMPL;
2741 }
2742
2743 static const IAudioClient3Vtbl AudioClient3_Vtbl =
2744 {
2745     AudioClient_QueryInterface,
2746     AudioClient_AddRef,
2747     AudioClient_Release,
2748     AudioClient_Initialize,
2749     AudioClient_GetBufferSize,
2750     AudioClient_GetStreamLatency,
2751     AudioClient_GetCurrentPadding,
2752     AudioClient_IsFormatSupported,
2753     AudioClient_GetMixFormat,
2754     AudioClient_GetDevicePeriod,
2755     AudioClient_Start,
2756     AudioClient_Stop,
2757     AudioClient_Reset,
2758     AudioClient_SetEventHandle,
2759     AudioClient_GetService,
2760     AudioClient_IsOffloadCapable,
2761     AudioClient_SetClientProperties,
2762     AudioClient_GetBufferSizeLimits,
2763     AudioClient_GetSharedModeEnginePeriod,
2764     AudioClient_GetCurrentSharedModeEnginePeriod,
2765     AudioClient_InitializeSharedAudioStream,
2766 };
2767
2768 static HRESULT WINAPI AudioRenderClient_QueryInterface(
2769         IAudioRenderClient *iface, REFIID riid, void **ppv)
2770 {
2771     ACImpl *This = impl_from_IAudioRenderClient(iface);
2772     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2773
2774     if(!ppv)
2775         return E_POINTER;
2776     *ppv = NULL;
2777
2778     if(IsEqualIID(riid, &IID_IUnknown) ||
2779             IsEqualIID(riid, &IID_IAudioRenderClient))
2780         *ppv = iface;
2781     else if(IsEqualIID(riid, &IID_IMarshal))
2782         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
2783
2784     if(*ppv){
2785         IUnknown_AddRef((IUnknown*)*ppv);
2786         return S_OK;
2787     }
2788
2789     WARN("Unknown interface %s\n", debugstr_guid(riid));
2790     return E_NOINTERFACE;
2791 }
2792
2793 static ULONG WINAPI AudioRenderClient_AddRef(IAudioRenderClient *iface)
2794 {
2795     ACImpl *This = impl_from_IAudioRenderClient(iface);
2796     return AudioClient_AddRef(&This->IAudioClient3_iface);
2797 }
2798
2799 static ULONG WINAPI AudioRenderClient_Release(IAudioRenderClient *iface)
2800 {
2801     ACImpl *This = impl_from_IAudioRenderClient(iface);
2802     return AudioClient_Release(&This->IAudioClient3_iface);
2803 }
2804
2805 static HRESULT WINAPI AudioRenderClient_GetBuffer(IAudioRenderClient *iface,
2806         UINT32 frames, BYTE **data)
2807 {
2808     ACImpl *This = impl_from_IAudioRenderClient(iface);
2809     UINT32 write_pos;
2810
2811     TRACE("(%p)->(%u, %p)\n", This, frames, data);
2812
2813     if(!data)
2814         return E_POINTER;
2815     *data = NULL;
2816
2817     EnterCriticalSection(&This->lock);
2818
2819     if(This->getbuf_last){
2820         LeaveCriticalSection(&This->lock);
2821         return AUDCLNT_E_OUT_OF_ORDER;
2822     }
2823
2824     if(!frames){
2825         LeaveCriticalSection(&This->lock);
2826         return S_OK;
2827     }
2828
2829     /* held_frames == GetCurrentPadding_nolock(); */
2830     if(This->held_frames + frames > This->bufsize_frames){
2831         LeaveCriticalSection(&This->lock);
2832         return AUDCLNT_E_BUFFER_TOO_LARGE;
2833     }
2834
2835     write_pos = This->wri_offs_frames;
2836     if(write_pos + frames > This->bufsize_frames){
2837         if(This->tmp_buffer_frames < frames){
2838             HeapFree(GetProcessHeap(), 0, This->tmp_buffer);
2839             This->tmp_buffer = HeapAlloc(GetProcessHeap(), 0,
2840                     frames * This->fmt->nBlockAlign);
2841             if(!This->tmp_buffer){
2842                 LeaveCriticalSection(&This->lock);
2843                 return E_OUTOFMEMORY;
2844             }
2845             This->tmp_buffer_frames = frames;
2846         }
2847         *data = This->tmp_buffer;
2848         This->getbuf_last = -frames;
2849     }else{
2850         *data = This->local_buffer + write_pos * This->fmt->nBlockAlign;
2851         This->getbuf_last = frames;
2852     }
2853
2854     silence_buffer(This, *data, frames);
2855
2856     LeaveCriticalSection(&This->lock);
2857
2858     return S_OK;
2859 }
2860
2861 static void alsa_wrap_buffer(ACImpl *This, BYTE *buffer, UINT32 written_frames)
2862 {
2863     snd_pcm_uframes_t write_offs_frames = This->wri_offs_frames;
2864     UINT32 write_offs_bytes = write_offs_frames * This->fmt->nBlockAlign;
2865     snd_pcm_uframes_t chunk_frames = This->bufsize_frames - write_offs_frames;
2866     UINT32 chunk_bytes = chunk_frames * This->fmt->nBlockAlign;
2867     UINT32 written_bytes = written_frames * This->fmt->nBlockAlign;
2868
2869     if(written_bytes <= chunk_bytes){
2870         memcpy(This->local_buffer + write_offs_bytes, buffer, written_bytes);
2871     }else{
2872         memcpy(This->local_buffer + write_offs_bytes, buffer, chunk_bytes);
2873         memcpy(This->local_buffer, buffer + chunk_bytes,
2874                 written_bytes - chunk_bytes);
2875     }
2876 }
2877
2878 static HRESULT WINAPI AudioRenderClient_ReleaseBuffer(
2879         IAudioRenderClient *iface, UINT32 written_frames, DWORD flags)
2880 {
2881     ACImpl *This = impl_from_IAudioRenderClient(iface);
2882     BYTE *buffer;
2883
2884     TRACE("(%p)->(%u, %x)\n", This, written_frames, flags);
2885
2886     EnterCriticalSection(&This->lock);
2887
2888     if(!written_frames){
2889         This->getbuf_last = 0;
2890         LeaveCriticalSection(&This->lock);
2891         return S_OK;
2892     }
2893
2894     if(!This->getbuf_last){
2895         LeaveCriticalSection(&This->lock);
2896         return AUDCLNT_E_OUT_OF_ORDER;
2897     }
2898
2899     if(written_frames > (This->getbuf_last >= 0 ? This->getbuf_last : -This->getbuf_last)){
2900         LeaveCriticalSection(&This->lock);
2901         return AUDCLNT_E_INVALID_SIZE;
2902     }
2903
2904     if(This->getbuf_last >= 0)
2905         buffer = This->local_buffer + This->wri_offs_frames * This->fmt->nBlockAlign;
2906     else
2907         buffer = This->tmp_buffer;
2908
2909     if(flags & AUDCLNT_BUFFERFLAGS_SILENT)
2910         silence_buffer(This, buffer, written_frames);
2911
2912     if(This->getbuf_last < 0)
2913         alsa_wrap_buffer(This, buffer, written_frames);
2914
2915     This->wri_offs_frames += written_frames;
2916     This->wri_offs_frames %= This->bufsize_frames;
2917     This->held_frames += written_frames;
2918     This->written_frames += written_frames;
2919     This->getbuf_last = 0;
2920
2921     LeaveCriticalSection(&This->lock);
2922
2923     return S_OK;
2924 }
2925
2926 static const IAudioRenderClientVtbl AudioRenderClient_Vtbl = {
2927     AudioRenderClient_QueryInterface,
2928     AudioRenderClient_AddRef,
2929     AudioRenderClient_Release,
2930     AudioRenderClient_GetBuffer,
2931     AudioRenderClient_ReleaseBuffer
2932 };
2933
2934 static HRESULT WINAPI AudioCaptureClient_QueryInterface(
2935         IAudioCaptureClient *iface, REFIID riid, void **ppv)
2936 {
2937     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2938     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
2939
2940     if(!ppv)
2941         return E_POINTER;
2942     *ppv = NULL;
2943
2944     if(IsEqualIID(riid, &IID_IUnknown) ||
2945             IsEqualIID(riid, &IID_IAudioCaptureClient))
2946         *ppv = iface;
2947     else if(IsEqualIID(riid, &IID_IMarshal))
2948         return IUnknown_QueryInterface(This->pUnkFTMarshal, riid, ppv);
2949
2950     if(*ppv){
2951         IUnknown_AddRef((IUnknown*)*ppv);
2952         return S_OK;
2953     }
2954
2955     WARN("Unknown interface %s\n", debugstr_guid(riid));
2956     return E_NOINTERFACE;
2957 }
2958
2959 static ULONG WINAPI AudioCaptureClient_AddRef(IAudioCaptureClient *iface)
2960 {
2961     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2962     return IAudioClient3_AddRef(&This->IAudioClient3_iface);
2963 }
2964
2965 static ULONG WINAPI AudioCaptureClient_Release(IAudioCaptureClient *iface)
2966 {
2967     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2968     return IAudioClient3_Release(&This->IAudioClient3_iface);
2969 }
2970
2971 static HRESULT WINAPI AudioCaptureClient_GetBuffer(IAudioCaptureClient *iface,
2972         BYTE **data, UINT32 *frames, DWORD *flags, UINT64 *devpos,
2973         UINT64 *qpcpos)
2974 {
2975     ACImpl *This = impl_from_IAudioCaptureClient(iface);
2976
2977     TRACE("(%p)->(%p, %p, %p, %p, %p)\n", This, data, frames, flags,
2978             devpos, qpcpos);
2979
2980     if(!data)
2981         return E_POINTER;
2982
2983     *data = NULL;
2984
2985     if(!frames || !flags)
2986         return E_POINTER;
2987
2988     EnterCriticalSection(&This->lock);
2989
2990     if(This->getbuf_last){
2991         LeaveCriticalSection(&This->lock);
2992         return AUDCLNT_E_OUT_OF_ORDER;
2993     }
2994
2995     /* hr = GetNextPacketSize(iface, frames); */
2996     if(This->held_frames < This->mmdev_period_frames){
2997         *frames = 0;
2998         LeaveCriticalSection(&This->lock);
2999         return AUDCLNT_S_BUFFER_EMPTY;
3000     }
3001     *frames = This->mmdev_period_frames;
3002
3003     if(This->lcl_offs_frames + *frames > This->bufsize_frames){
3004         UINT32 chunk_bytes, offs_bytes, frames_bytes;
3005         if(This->tmp_buffer_frames < *frames){
3006             HeapFree(GetProcessHeap(), 0, This->tmp_buffer);
3007             This->tmp_buffer = HeapAlloc(GetProcessHeap(), 0,
3008                     *frames * This->fmt->nBlockAlign);
3009             if(!This->tmp_buffer){
3010                 LeaveCriticalSection(&This->lock);
3011                 return E_OUTOFMEMORY;
3012             }
3013             This->tmp_buffer_frames = *frames;
3014         }
3015
3016         *data = This->tmp_buffer;
3017         chunk_bytes = (This->bufsize_frames - This->lcl_offs_frames) *
3018             This->fmt->nBlockAlign;
3019         offs_bytes = This->lcl_offs_frames * This->fmt->nBlockAlign;
3020         frames_bytes = *frames * This->fmt->nBlockAlign;
3021         memcpy(This->tmp_buffer, This->local_buffer + offs_bytes, chunk_bytes);
3022         memcpy(This->tmp_buffer + chunk_bytes, This->local_buffer,
3023                 frames_bytes - chunk_bytes);
3024     }else
3025         *data = This->local_buffer +
3026             This->lcl_offs_frames * This->fmt->nBlockAlign;
3027
3028     This->getbuf_last = *frames;
3029     *flags = 0;
3030
3031     if(devpos)
3032       *devpos = This->written_frames;
3033     if(qpcpos){ /* fixme: qpc of recording time */
3034         LARGE_INTEGER stamp, freq;
3035         QueryPerformanceCounter(&stamp);
3036         QueryPerformanceFrequency(&freq);
3037         *qpcpos = (stamp.QuadPart * (INT64)10000000) / freq.QuadPart;
3038     }
3039
3040     LeaveCriticalSection(&This->lock);
3041
3042     return *frames ? S_OK : AUDCLNT_S_BUFFER_EMPTY;
3043 }
3044
3045 static HRESULT WINAPI AudioCaptureClient_ReleaseBuffer(
3046         IAudioCaptureClient *iface, UINT32 done)
3047 {
3048     ACImpl *This = impl_from_IAudioCaptureClient(iface);
3049
3050     TRACE("(%p)->(%u)\n", This, done);
3051
3052     EnterCriticalSection(&This->lock);
3053
3054     if(!done){
3055         This->getbuf_last = 0;
3056         LeaveCriticalSection(&This->lock);
3057         return S_OK;
3058     }
3059
3060     if(!This->getbuf_last){
3061         LeaveCriticalSection(&This->lock);
3062         return AUDCLNT_E_OUT_OF_ORDER;
3063     }
3064
3065     if(This->getbuf_last != done){
3066         LeaveCriticalSection(&This->lock);
3067         return AUDCLNT_E_INVALID_SIZE;
3068     }
3069
3070     This->written_frames += done;
3071     This->held_frames -= done;
3072     This->lcl_offs_frames += done;
3073     This->lcl_offs_frames %= This->bufsize_frames;
3074     This->getbuf_last = 0;
3075
3076     LeaveCriticalSection(&This->lock);
3077
3078     return S_OK;
3079 }
3080
3081 static HRESULT WINAPI AudioCaptureClient_GetNextPacketSize(
3082         IAudioCaptureClient *iface, UINT32 *frames)
3083 {
3084     ACImpl *This = impl_from_IAudioCaptureClient(iface);
3085
3086     TRACE("(%p)->(%p)\n", This, frames);
3087
3088     if(!frames)
3089         return E_POINTER;
3090
3091     EnterCriticalSection(&This->lock);
3092
3093     *frames = This->held_frames < This->mmdev_period_frames ? 0 : This->mmdev_period_frames;
3094
3095     LeaveCriticalSection(&This->lock);
3096
3097     return S_OK;
3098 }
3099
3100 static const IAudioCaptureClientVtbl AudioCaptureClient_Vtbl =
3101 {
3102     AudioCaptureClient_QueryInterface,
3103     AudioCaptureClient_AddRef,
3104     AudioCaptureClient_Release,
3105     AudioCaptureClient_GetBuffer,
3106     AudioCaptureClient_ReleaseBuffer,
3107     AudioCaptureClient_GetNextPacketSize
3108 };
3109
3110 static HRESULT WINAPI AudioClock_QueryInterface(IAudioClock *iface,
3111         REFIID riid, void **ppv)
3112 {
3113     ACImpl *This = impl_from_IAudioClock(iface);
3114
3115     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3116
3117     if(!ppv)
3118         return E_POINTER;
3119     *ppv = NULL;
3120
3121     if(IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IAudioClock))
3122         *ppv = iface;
3123     else if(IsEqualIID(riid, &IID_IAudioClock2))
3124         *ppv = &This->IAudioClock2_iface;
3125     if(*ppv){
3126         IUnknown_AddRef((IUnknown*)*ppv);
3127         return S_OK;
3128     }
3129
3130     WARN("Unknown interface %s\n", debugstr_guid(riid));
3131     return E_NOINTERFACE;
3132 }
3133
3134 static ULONG WINAPI AudioClock_AddRef(IAudioClock *iface)
3135 {
3136     ACImpl *This = impl_from_IAudioClock(iface);
3137     return IAudioClient3_AddRef(&This->IAudioClient3_iface);
3138 }
3139
3140 static ULONG WINAPI AudioClock_Release(IAudioClock *iface)
3141 {
3142     ACImpl *This = impl_from_IAudioClock(iface);
3143     return IAudioClient3_Release(&This->IAudioClient3_iface);
3144 }
3145
3146 static HRESULT WINAPI AudioClock_GetFrequency(IAudioClock *iface, UINT64 *freq)
3147 {
3148     ACImpl *This = impl_from_IAudioClock(iface);
3149
3150     TRACE("(%p)->(%p)\n", This, freq);
3151
3152     if(This->share == AUDCLNT_SHAREMODE_SHARED)
3153         *freq = (UINT64)This->fmt->nSamplesPerSec * This->fmt->nBlockAlign;
3154     else
3155         *freq = This->fmt->nSamplesPerSec;
3156
3157     return S_OK;
3158 }
3159
3160 static HRESULT WINAPI AudioClock_GetPosition(IAudioClock *iface, UINT64 *pos,
3161         UINT64 *qpctime)
3162 {
3163     ACImpl *This = impl_from_IAudioClock(iface);
3164     UINT64 position;
3165     snd_pcm_state_t alsa_state;
3166
3167     TRACE("(%p)->(%p, %p)\n", This, pos, qpctime);
3168
3169     if(!pos)
3170         return E_POINTER;
3171
3172     EnterCriticalSection(&This->lock);
3173
3174     /* avail_update required to get accurate snd_pcm_state() */
3175     snd_pcm_avail_update(This->pcm_handle);
3176     alsa_state = snd_pcm_state(This->pcm_handle);
3177
3178     if(This->dataflow == eRender){
3179         position = This->written_frames - This->held_frames;
3180
3181         if(This->started && alsa_state == SND_PCM_STATE_RUNNING && This->held_frames)
3182             /* we should be using snd_pcm_delay here, but it is broken
3183              * especially during ALSA device underrun. instead, let's just
3184              * interpolate between periods with the system timer. */
3185             position += interp_elapsed_frames(This);
3186
3187         position = min(position, This->written_frames - This->held_frames + This->mmdev_period_frames);
3188
3189         position = min(position, This->written_frames);
3190     }else
3191         position = This->written_frames + This->held_frames;
3192
3193     /* ensure monotic growth */
3194     if(position < This->last_pos_frames)
3195         position = This->last_pos_frames;
3196     else
3197         This->last_pos_frames = position;
3198
3199     TRACE("frames written: %u, held: %u, state: 0x%x, position: %u\n",
3200             (UINT32)(This->written_frames%1000000000), This->held_frames,
3201             alsa_state, (UINT32)(position%1000000000));
3202
3203     LeaveCriticalSection(&This->lock);
3204
3205     if(This->share == AUDCLNT_SHAREMODE_SHARED)
3206         *pos = position * This->fmt->nBlockAlign;
3207     else
3208         *pos = position;
3209
3210     if(qpctime){
3211         LARGE_INTEGER stamp, freq;
3212         QueryPerformanceCounter(&stamp);
3213         QueryPerformanceFrequency(&freq);
3214         *qpctime = (stamp.QuadPart * (INT64)10000000) / freq.QuadPart;
3215     }
3216
3217     return S_OK;
3218 }
3219
3220 static HRESULT WINAPI AudioClock_GetCharacteristics(IAudioClock *iface,
3221         DWORD *chars)
3222 {
3223     ACImpl *This = impl_from_IAudioClock(iface);
3224
3225     TRACE("(%p)->(%p)\n", This, chars);
3226
3227     if(!chars)
3228         return E_POINTER;
3229
3230     *chars = AUDIOCLOCK_CHARACTERISTIC_FIXED_FREQ;
3231
3232     return S_OK;
3233 }
3234
3235 static const IAudioClockVtbl AudioClock_Vtbl =
3236 {
3237     AudioClock_QueryInterface,
3238     AudioClock_AddRef,
3239     AudioClock_Release,
3240     AudioClock_GetFrequency,
3241     AudioClock_GetPosition,
3242     AudioClock_GetCharacteristics
3243 };
3244
3245 static HRESULT WINAPI AudioClock2_QueryInterface(IAudioClock2 *iface,
3246         REFIID riid, void **ppv)
3247 {
3248     ACImpl *This = impl_from_IAudioClock2(iface);
3249     return IAudioClock_QueryInterface(&This->IAudioClock_iface, riid, ppv);
3250 }
3251
3252 static ULONG WINAPI AudioClock2_AddRef(IAudioClock2 *iface)
3253 {
3254     ACImpl *This = impl_from_IAudioClock2(iface);
3255     return IAudioClient3_AddRef(&This->IAudioClient3_iface);
3256 }
3257
3258 static ULONG WINAPI AudioClock2_Release(IAudioClock2 *iface)
3259 {
3260     ACImpl *This = impl_from_IAudioClock2(iface);
3261     return IAudioClient3_Release(&This->IAudioClient3_iface);
3262 }
3263
3264 static HRESULT WINAPI AudioClock2_GetDevicePosition(IAudioClock2 *iface,
3265         UINT64 *pos, UINT64 *qpctime)
3266 {
3267     ACImpl *This = impl_from_IAudioClock2(iface);
3268
3269     FIXME("(%p)->(%p, %p)\n", This, pos, qpctime);
3270
3271     return E_NOTIMPL;
3272 }
3273
3274 static const IAudioClock2Vtbl AudioClock2_Vtbl =
3275 {
3276     AudioClock2_QueryInterface,
3277     AudioClock2_AddRef,
3278     AudioClock2_Release,
3279     AudioClock2_GetDevicePosition
3280 };
3281
3282 static AudioSessionWrapper *AudioSessionWrapper_Create(ACImpl *client)
3283 {
3284     AudioSessionWrapper *ret;
3285
3286     ret = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
3287             sizeof(AudioSessionWrapper));
3288     if(!ret)
3289         return NULL;
3290
3291     ret->IAudioSessionControl2_iface.lpVtbl = &AudioSessionControl2_Vtbl;
3292     ret->ISimpleAudioVolume_iface.lpVtbl = &SimpleAudioVolume_Vtbl;
3293     ret->IChannelAudioVolume_iface.lpVtbl = &ChannelAudioVolume_Vtbl;
3294
3295     ret->ref = 1;
3296
3297     ret->client = client;
3298     if(client){
3299         ret->session = client->session;
3300         AudioClient_AddRef(&client->IAudioClient3_iface);
3301     }
3302
3303     return ret;
3304 }
3305
3306 static HRESULT WINAPI AudioSessionControl_QueryInterface(
3307         IAudioSessionControl2 *iface, REFIID riid, void **ppv)
3308 {
3309     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3310
3311     if(!ppv)
3312         return E_POINTER;
3313     *ppv = NULL;
3314
3315     if(IsEqualIID(riid, &IID_IUnknown) ||
3316             IsEqualIID(riid, &IID_IAudioSessionControl) ||
3317             IsEqualIID(riid, &IID_IAudioSessionControl2))
3318         *ppv = iface;
3319     if(*ppv){
3320         IUnknown_AddRef((IUnknown*)*ppv);
3321         return S_OK;
3322     }
3323
3324     WARN("Unknown interface %s\n", debugstr_guid(riid));
3325     return E_NOINTERFACE;
3326 }
3327
3328 static ULONG WINAPI AudioSessionControl_AddRef(IAudioSessionControl2 *iface)
3329 {
3330     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3331     ULONG ref;
3332     ref = InterlockedIncrement(&This->ref);
3333     TRACE("(%p) Refcount now %u\n", This, ref);
3334     return ref;
3335 }
3336
3337 static ULONG WINAPI AudioSessionControl_Release(IAudioSessionControl2 *iface)
3338 {
3339     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3340     ULONG ref;
3341     ref = InterlockedDecrement(&This->ref);
3342     TRACE("(%p) Refcount now %u\n", This, ref);
3343     if(!ref){
3344         if(This->client){
3345             EnterCriticalSection(&This->client->lock);
3346             This->client->session_wrapper = NULL;
3347             LeaveCriticalSection(&This->client->lock);
3348             AudioClient_Release(&This->client->IAudioClient3_iface);
3349         }
3350         HeapFree(GetProcessHeap(), 0, This);
3351     }
3352     return ref;
3353 }
3354
3355 static HRESULT WINAPI AudioSessionControl_GetState(IAudioSessionControl2 *iface,
3356         AudioSessionState *state)
3357 {
3358     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3359     ACImpl *client;
3360
3361     TRACE("(%p)->(%p)\n", This, state);
3362
3363     if(!state)
3364         return NULL_PTR_ERR;
3365
3366     EnterCriticalSection(&g_sessions_lock);
3367
3368     if(list_empty(&This->session->clients)){
3369         *state = AudioSessionStateExpired;
3370         LeaveCriticalSection(&g_sessions_lock);
3371         return S_OK;
3372     }
3373
3374     LIST_FOR_EACH_ENTRY(client, &This->session->clients, ACImpl, entry){
3375         EnterCriticalSection(&client->lock);
3376         if(client->started){
3377             *state = AudioSessionStateActive;
3378             LeaveCriticalSection(&client->lock);
3379             LeaveCriticalSection(&g_sessions_lock);
3380             return S_OK;
3381         }
3382         LeaveCriticalSection(&client->lock);
3383     }
3384
3385     LeaveCriticalSection(&g_sessions_lock);
3386
3387     *state = AudioSessionStateInactive;
3388
3389     return S_OK;
3390 }
3391
3392 static HRESULT WINAPI AudioSessionControl_GetDisplayName(
3393         IAudioSessionControl2 *iface, WCHAR **name)
3394 {
3395     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3396
3397     FIXME("(%p)->(%p) - stub\n", This, name);
3398
3399     return E_NOTIMPL;
3400 }
3401
3402 static HRESULT WINAPI AudioSessionControl_SetDisplayName(
3403         IAudioSessionControl2 *iface, const WCHAR *name, const GUID *session)
3404 {
3405     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3406
3407     FIXME("(%p)->(%p, %s) - stub\n", This, name, debugstr_guid(session));
3408
3409     return E_NOTIMPL;
3410 }
3411
3412 static HRESULT WINAPI AudioSessionControl_GetIconPath(
3413         IAudioSessionControl2 *iface, WCHAR **path)
3414 {
3415     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3416
3417     FIXME("(%p)->(%p) - stub\n", This, path);
3418
3419     return E_NOTIMPL;
3420 }
3421
3422 static HRESULT WINAPI AudioSessionControl_SetIconPath(
3423         IAudioSessionControl2 *iface, const WCHAR *path, const GUID *session)
3424 {
3425     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3426
3427     FIXME("(%p)->(%p, %s) - stub\n", This, path, debugstr_guid(session));
3428
3429     return E_NOTIMPL;
3430 }
3431
3432 static HRESULT WINAPI AudioSessionControl_GetGroupingParam(
3433         IAudioSessionControl2 *iface, GUID *group)
3434 {
3435     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3436
3437     FIXME("(%p)->(%p) - stub\n", This, group);
3438
3439     return E_NOTIMPL;
3440 }
3441
3442 static HRESULT WINAPI AudioSessionControl_SetGroupingParam(
3443         IAudioSessionControl2 *iface, const GUID *group, const GUID *session)
3444 {
3445     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3446
3447     FIXME("(%p)->(%s, %s) - stub\n", This, debugstr_guid(group),
3448             debugstr_guid(session));
3449
3450     return E_NOTIMPL;
3451 }
3452
3453 static HRESULT WINAPI AudioSessionControl_RegisterAudioSessionNotification(
3454         IAudioSessionControl2 *iface, IAudioSessionEvents *events)
3455 {
3456     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3457
3458     FIXME("(%p)->(%p) - stub\n", This, events);
3459
3460     return S_OK;
3461 }
3462
3463 static HRESULT WINAPI AudioSessionControl_UnregisterAudioSessionNotification(
3464         IAudioSessionControl2 *iface, IAudioSessionEvents *events)
3465 {
3466     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3467
3468     FIXME("(%p)->(%p) - stub\n", This, events);
3469
3470     return S_OK;
3471 }
3472
3473 static HRESULT WINAPI AudioSessionControl_GetSessionIdentifier(
3474         IAudioSessionControl2 *iface, WCHAR **id)
3475 {
3476     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3477
3478     FIXME("(%p)->(%p) - stub\n", This, id);
3479
3480     return E_NOTIMPL;
3481 }
3482
3483 static HRESULT WINAPI AudioSessionControl_GetSessionInstanceIdentifier(
3484         IAudioSessionControl2 *iface, WCHAR **id)
3485 {
3486     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3487
3488     FIXME("(%p)->(%p) - stub\n", This, id);
3489
3490     return E_NOTIMPL;
3491 }
3492
3493 static HRESULT WINAPI AudioSessionControl_GetProcessId(
3494         IAudioSessionControl2 *iface, DWORD *pid)
3495 {
3496     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3497
3498     TRACE("(%p)->(%p)\n", This, pid);
3499
3500     if(!pid)
3501         return E_POINTER;
3502
3503     *pid = GetCurrentProcessId();
3504
3505     return S_OK;
3506 }
3507
3508 static HRESULT WINAPI AudioSessionControl_IsSystemSoundsSession(
3509         IAudioSessionControl2 *iface)
3510 {
3511     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3512
3513     TRACE("(%p)\n", This);
3514
3515     return S_FALSE;
3516 }
3517
3518 static HRESULT WINAPI AudioSessionControl_SetDuckingPreference(
3519         IAudioSessionControl2 *iface, BOOL optout)
3520 {
3521     AudioSessionWrapper *This = impl_from_IAudioSessionControl2(iface);
3522
3523     TRACE("(%p)->(%d)\n", This, optout);
3524
3525     return S_OK;
3526 }
3527
3528 static const IAudioSessionControl2Vtbl AudioSessionControl2_Vtbl =
3529 {
3530     AudioSessionControl_QueryInterface,
3531     AudioSessionControl_AddRef,
3532     AudioSessionControl_Release,
3533     AudioSessionControl_GetState,
3534     AudioSessionControl_GetDisplayName,
3535     AudioSessionControl_SetDisplayName,
3536     AudioSessionControl_GetIconPath,
3537     AudioSessionControl_SetIconPath,
3538     AudioSessionControl_GetGroupingParam,
3539     AudioSessionControl_SetGroupingParam,
3540     AudioSessionControl_RegisterAudioSessionNotification,
3541     AudioSessionControl_UnregisterAudioSessionNotification,
3542     AudioSessionControl_GetSessionIdentifier,
3543     AudioSessionControl_GetSessionInstanceIdentifier,
3544     AudioSessionControl_GetProcessId,
3545     AudioSessionControl_IsSystemSoundsSession,
3546     AudioSessionControl_SetDuckingPreference
3547 };
3548
3549 static HRESULT WINAPI SimpleAudioVolume_QueryInterface(
3550         ISimpleAudioVolume *iface, REFIID riid, void **ppv)
3551 {
3552     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3553
3554     if(!ppv)
3555         return E_POINTER;
3556     *ppv = NULL;
3557
3558     if(IsEqualIID(riid, &IID_IUnknown) ||
3559             IsEqualIID(riid, &IID_ISimpleAudioVolume))
3560         *ppv = iface;
3561     if(*ppv){
3562         IUnknown_AddRef((IUnknown*)*ppv);
3563         return S_OK;
3564     }
3565
3566     WARN("Unknown interface %s\n", debugstr_guid(riid));
3567     return E_NOINTERFACE;
3568 }
3569
3570 static ULONG WINAPI SimpleAudioVolume_AddRef(ISimpleAudioVolume *iface)
3571 {
3572     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
3573     return AudioSessionControl_AddRef(&This->IAudioSessionControl2_iface);
3574 }
3575
3576 static ULONG WINAPI SimpleAudioVolume_Release(ISimpleAudioVolume *iface)
3577 {
3578     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
3579     return AudioSessionControl_Release(&This->IAudioSessionControl2_iface);
3580 }
3581
3582 static HRESULT WINAPI SimpleAudioVolume_SetMasterVolume(
3583         ISimpleAudioVolume *iface, float level, const GUID *context)
3584 {
3585     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
3586     AudioSession *session = This->session;
3587
3588     TRACE("(%p)->(%f, %s)\n", session, level, wine_dbgstr_guid(context));
3589
3590     if(level < 0.f || level > 1.f)
3591         return E_INVALIDARG;
3592
3593     if(context)
3594         FIXME("Notifications not supported yet\n");
3595
3596     TRACE("ALSA does not support volume control\n");
3597
3598     EnterCriticalSection(&session->lock);
3599
3600     session->master_vol = level;
3601
3602     LeaveCriticalSection(&session->lock);
3603
3604     return S_OK;
3605 }
3606
3607 static HRESULT WINAPI SimpleAudioVolume_GetMasterVolume(
3608         ISimpleAudioVolume *iface, float *level)
3609 {
3610     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
3611     AudioSession *session = This->session;
3612
3613     TRACE("(%p)->(%p)\n", session, level);
3614
3615     if(!level)
3616         return NULL_PTR_ERR;
3617
3618     *level = session->master_vol;
3619
3620     return S_OK;
3621 }
3622
3623 static HRESULT WINAPI SimpleAudioVolume_SetMute(ISimpleAudioVolume *iface,
3624         BOOL mute, const GUID *context)
3625 {
3626     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
3627     AudioSession *session = This->session;
3628
3629     TRACE("(%p)->(%u, %s)\n", session, mute, debugstr_guid(context));
3630
3631     if(context)
3632         FIXME("Notifications not supported yet\n");
3633
3634     session->mute = mute;
3635
3636     return S_OK;
3637 }
3638
3639 static HRESULT WINAPI SimpleAudioVolume_GetMute(ISimpleAudioVolume *iface,
3640         BOOL *mute)
3641 {
3642     AudioSessionWrapper *This = impl_from_ISimpleAudioVolume(iface);
3643     AudioSession *session = This->session;
3644
3645     TRACE("(%p)->(%p)\n", session, mute);
3646
3647     if(!mute)
3648         return NULL_PTR_ERR;
3649
3650     *mute = session->mute;
3651
3652     return S_OK;
3653 }
3654
3655 static const ISimpleAudioVolumeVtbl SimpleAudioVolume_Vtbl  =
3656 {
3657     SimpleAudioVolume_QueryInterface,
3658     SimpleAudioVolume_AddRef,
3659     SimpleAudioVolume_Release,
3660     SimpleAudioVolume_SetMasterVolume,
3661     SimpleAudioVolume_GetMasterVolume,
3662     SimpleAudioVolume_SetMute,
3663     SimpleAudioVolume_GetMute
3664 };
3665
3666 static HRESULT WINAPI AudioStreamVolume_QueryInterface(
3667         IAudioStreamVolume *iface, REFIID riid, void **ppv)
3668 {
3669     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3670
3671     if(!ppv)
3672         return E_POINTER;
3673     *ppv = NULL;
3674
3675     if(IsEqualIID(riid, &IID_IUnknown) ||
3676             IsEqualIID(riid, &IID_IAudioStreamVolume))
3677         *ppv = iface;
3678     if(*ppv){
3679         IUnknown_AddRef((IUnknown*)*ppv);
3680         return S_OK;
3681     }
3682
3683     WARN("Unknown interface %s\n", debugstr_guid(riid));
3684     return E_NOINTERFACE;
3685 }
3686
3687 static ULONG WINAPI AudioStreamVolume_AddRef(IAudioStreamVolume *iface)
3688 {
3689     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3690     return IAudioClient3_AddRef(&This->IAudioClient3_iface);
3691 }
3692
3693 static ULONG WINAPI AudioStreamVolume_Release(IAudioStreamVolume *iface)
3694 {
3695     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3696     return IAudioClient3_Release(&This->IAudioClient3_iface);
3697 }
3698
3699 static HRESULT WINAPI AudioStreamVolume_GetChannelCount(
3700         IAudioStreamVolume *iface, UINT32 *out)
3701 {
3702     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3703
3704     TRACE("(%p)->(%p)\n", This, out);
3705
3706     if(!out)
3707         return E_POINTER;
3708
3709     *out = This->fmt->nChannels;
3710
3711     return S_OK;
3712 }
3713
3714 static HRESULT WINAPI AudioStreamVolume_SetChannelVolume(
3715         IAudioStreamVolume *iface, UINT32 index, float level)
3716 {
3717     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3718
3719     TRACE("(%p)->(%d, %f)\n", This, index, level);
3720
3721     if(level < 0.f || level > 1.f)
3722         return E_INVALIDARG;
3723
3724     if(index >= This->fmt->nChannels)
3725         return E_INVALIDARG;
3726
3727     TRACE("ALSA does not support volume control\n");
3728
3729     EnterCriticalSection(&This->lock);
3730
3731     This->vols[index] = level;
3732
3733     LeaveCriticalSection(&This->lock);
3734
3735     return S_OK;
3736 }
3737
3738 static HRESULT WINAPI AudioStreamVolume_GetChannelVolume(
3739         IAudioStreamVolume *iface, UINT32 index, float *level)
3740 {
3741     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3742
3743     TRACE("(%p)->(%d, %p)\n", This, index, level);
3744
3745     if(!level)
3746         return E_POINTER;
3747
3748     if(index >= This->fmt->nChannels)
3749         return E_INVALIDARG;
3750
3751     *level = This->vols[index];
3752
3753     return S_OK;
3754 }
3755
3756 static HRESULT WINAPI AudioStreamVolume_SetAllVolumes(
3757         IAudioStreamVolume *iface, UINT32 count, const float *levels)
3758 {
3759     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3760     unsigned int i;
3761
3762     TRACE("(%p)->(%d, %p)\n", This, count, levels);
3763
3764     if(!levels)
3765         return E_POINTER;
3766
3767     if(count != This->fmt->nChannels)
3768         return E_INVALIDARG;
3769
3770     TRACE("ALSA does not support volume control\n");
3771
3772     EnterCriticalSection(&This->lock);
3773
3774     for(i = 0; i < count; ++i)
3775         This->vols[i] = levels[i];
3776
3777     LeaveCriticalSection(&This->lock);
3778
3779     return S_OK;
3780 }
3781
3782 static HRESULT WINAPI AudioStreamVolume_GetAllVolumes(
3783         IAudioStreamVolume *iface, UINT32 count, float *levels)
3784 {
3785     ACImpl *This = impl_from_IAudioStreamVolume(iface);
3786     unsigned int i;
3787
3788     TRACE("(%p)->(%d, %p)\n", This, count, levels);
3789
3790     if(!levels)
3791         return E_POINTER;
3792
3793     if(count != This->fmt->nChannels)
3794         return E_INVALIDARG;
3795
3796     EnterCriticalSection(&This->lock);
3797
3798     for(i = 0; i < count; ++i)
3799         levels[i] = This->vols[i];
3800
3801     LeaveCriticalSection(&This->lock);
3802
3803     return S_OK;
3804 }
3805
3806 static const IAudioStreamVolumeVtbl AudioStreamVolume_Vtbl =
3807 {
3808     AudioStreamVolume_QueryInterface,
3809     AudioStreamVolume_AddRef,
3810     AudioStreamVolume_Release,
3811     AudioStreamVolume_GetChannelCount,
3812     AudioStreamVolume_SetChannelVolume,
3813     AudioStreamVolume_GetChannelVolume,
3814     AudioStreamVolume_SetAllVolumes,
3815     AudioStreamVolume_GetAllVolumes
3816 };
3817
3818 static HRESULT WINAPI ChannelAudioVolume_QueryInterface(
3819         IChannelAudioVolume *iface, REFIID riid, void **ppv)
3820 {
3821     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3822
3823     if(!ppv)
3824         return E_POINTER;
3825     *ppv = NULL;
3826
3827     if(IsEqualIID(riid, &IID_IUnknown) ||
3828             IsEqualIID(riid, &IID_IChannelAudioVolume))
3829         *ppv = iface;
3830     if(*ppv){
3831         IUnknown_AddRef((IUnknown*)*ppv);
3832         return S_OK;
3833     }
3834
3835     WARN("Unknown interface %s\n", debugstr_guid(riid));
3836     return E_NOINTERFACE;
3837 }
3838
3839 static ULONG WINAPI ChannelAudioVolume_AddRef(IChannelAudioVolume *iface)
3840 {
3841     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3842     return AudioSessionControl_AddRef(&This->IAudioSessionControl2_iface);
3843 }
3844
3845 static ULONG WINAPI ChannelAudioVolume_Release(IChannelAudioVolume *iface)
3846 {
3847     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3848     return AudioSessionControl_Release(&This->IAudioSessionControl2_iface);
3849 }
3850
3851 static HRESULT WINAPI ChannelAudioVolume_GetChannelCount(
3852         IChannelAudioVolume *iface, UINT32 *out)
3853 {
3854     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3855     AudioSession *session = This->session;
3856
3857     TRACE("(%p)->(%p)\n", session, out);
3858
3859     if(!out)
3860         return NULL_PTR_ERR;
3861
3862     *out = session->channel_count;
3863
3864     return S_OK;
3865 }
3866
3867 static HRESULT WINAPI ChannelAudioVolume_SetChannelVolume(
3868         IChannelAudioVolume *iface, UINT32 index, float level,
3869         const GUID *context)
3870 {
3871     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3872     AudioSession *session = This->session;
3873
3874     TRACE("(%p)->(%d, %f, %s)\n", session, index, level,
3875             wine_dbgstr_guid(context));
3876
3877     if(level < 0.f || level > 1.f)
3878         return E_INVALIDARG;
3879
3880     if(index >= session->channel_count)
3881         return E_INVALIDARG;
3882
3883     if(context)
3884         FIXME("Notifications not supported yet\n");
3885
3886     TRACE("ALSA does not support volume control\n");
3887
3888     EnterCriticalSection(&session->lock);
3889
3890     session->channel_vols[index] = level;
3891
3892     LeaveCriticalSection(&session->lock);
3893
3894     return S_OK;
3895 }
3896
3897 static HRESULT WINAPI ChannelAudioVolume_GetChannelVolume(
3898         IChannelAudioVolume *iface, UINT32 index, float *level)
3899 {
3900     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3901     AudioSession *session = This->session;
3902
3903     TRACE("(%p)->(%d, %p)\n", session, index, level);
3904
3905     if(!level)
3906         return NULL_PTR_ERR;
3907
3908     if(index >= session->channel_count)
3909         return E_INVALIDARG;
3910
3911     *level = session->channel_vols[index];
3912
3913     return S_OK;
3914 }
3915
3916 static HRESULT WINAPI ChannelAudioVolume_SetAllVolumes(
3917         IChannelAudioVolume *iface, UINT32 count, const float *levels,
3918         const GUID *context)
3919 {
3920     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3921     AudioSession *session = This->session;
3922     unsigned int i;
3923
3924     TRACE("(%p)->(%d, %p, %s)\n", session, count, levels,
3925             wine_dbgstr_guid(context));
3926
3927     if(!levels)
3928         return NULL_PTR_ERR;
3929
3930     if(count != session->channel_count)
3931         return E_INVALIDARG;
3932
3933     if(context)
3934         FIXME("Notifications not supported yet\n");
3935
3936     TRACE("ALSA does not support volume control\n");
3937
3938     EnterCriticalSection(&session->lock);
3939
3940     for(i = 0; i < count; ++i)
3941         session->channel_vols[i] = levels[i];
3942
3943     LeaveCriticalSection(&session->lock);
3944
3945     return S_OK;
3946 }
3947
3948 static HRESULT WINAPI ChannelAudioVolume_GetAllVolumes(
3949         IChannelAudioVolume *iface, UINT32 count, float *levels)
3950 {
3951     AudioSessionWrapper *This = impl_from_IChannelAudioVolume(iface);
3952     AudioSession *session = This->session;
3953     unsigned int i;
3954
3955     TRACE("(%p)->(%d, %p)\n", session, count, levels);
3956
3957     if(!levels)
3958         return NULL_PTR_ERR;
3959
3960     if(count != session->channel_count)
3961         return E_INVALIDARG;
3962
3963     for(i = 0; i < count; ++i)
3964         levels[i] = session->channel_vols[i];
3965
3966     return S_OK;
3967 }
3968
3969 static const IChannelAudioVolumeVtbl ChannelAudioVolume_Vtbl =
3970 {
3971     ChannelAudioVolume_QueryInterface,
3972     ChannelAudioVolume_AddRef,
3973     ChannelAudioVolume_Release,
3974     ChannelAudioVolume_GetChannelCount,
3975     ChannelAudioVolume_SetChannelVolume,
3976     ChannelAudioVolume_GetChannelVolume,
3977     ChannelAudioVolume_SetAllVolumes,
3978     ChannelAudioVolume_GetAllVolumes
3979 };
3980
3981 static HRESULT WINAPI AudioSessionManager_QueryInterface(IAudioSessionManager2 *iface,
3982         REFIID riid, void **ppv)
3983 {
3984     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
3985
3986     if(!ppv)
3987         return E_POINTER;
3988     *ppv = NULL;
3989
3990     if(IsEqualIID(riid, &IID_IUnknown) ||
3991             IsEqualIID(riid, &IID_IAudioSessionManager) ||
3992             IsEqualIID(riid, &IID_IAudioSessionManager2))
3993         *ppv = iface;
3994     if(*ppv){
3995         IUnknown_AddRef((IUnknown*)*ppv);
3996         return S_OK;
3997     }
3998
3999     WARN("Unknown interface %s\n", debugstr_guid(riid));
4000     return E_NOINTERFACE;
4001 }
4002
4003 static ULONG WINAPI AudioSessionManager_AddRef(IAudioSessionManager2 *iface)
4004 {
4005     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4006     ULONG ref;
4007     ref = InterlockedIncrement(&This->ref);
4008     TRACE("(%p) Refcount now %u\n", This, ref);
4009     return ref;
4010 }
4011
4012 static ULONG WINAPI AudioSessionManager_Release(IAudioSessionManager2 *iface)
4013 {
4014     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4015     ULONG ref;
4016     ref = InterlockedDecrement(&This->ref);
4017     TRACE("(%p) Refcount now %u\n", This, ref);
4018     if(!ref)
4019         HeapFree(GetProcessHeap(), 0, This);
4020     return ref;
4021 }
4022
4023 static HRESULT WINAPI AudioSessionManager_GetAudioSessionControl(
4024         IAudioSessionManager2 *iface, const GUID *session_guid, DWORD flags,
4025         IAudioSessionControl **out)
4026 {
4027     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4028     AudioSession *session;
4029     AudioSessionWrapper *wrapper;
4030     HRESULT hr;
4031
4032     TRACE("(%p)->(%s, %x, %p)\n", This, debugstr_guid(session_guid),
4033             flags, out);
4034
4035     hr = get_audio_session(session_guid, This->device, 0, &session);
4036     if(FAILED(hr))
4037         return hr;
4038
4039     wrapper = AudioSessionWrapper_Create(NULL);
4040     if(!wrapper)
4041         return E_OUTOFMEMORY;
4042
4043     wrapper->session = session;
4044
4045     *out = (IAudioSessionControl*)&wrapper->IAudioSessionControl2_iface;
4046
4047     return S_OK;
4048 }
4049
4050 static HRESULT WINAPI AudioSessionManager_GetSimpleAudioVolume(
4051         IAudioSessionManager2 *iface, const GUID *session_guid, DWORD flags,
4052         ISimpleAudioVolume **out)
4053 {
4054     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4055     AudioSession *session;
4056     AudioSessionWrapper *wrapper;
4057     HRESULT hr;
4058
4059     TRACE("(%p)->(%s, %x, %p)\n", This, debugstr_guid(session_guid),
4060             flags, out);
4061
4062     hr = get_audio_session(session_guid, This->device, 0, &session);
4063     if(FAILED(hr))
4064         return hr;
4065
4066     wrapper = AudioSessionWrapper_Create(NULL);
4067     if(!wrapper)
4068         return E_OUTOFMEMORY;
4069
4070     wrapper->session = session;
4071
4072     *out = &wrapper->ISimpleAudioVolume_iface;
4073
4074     return S_OK;
4075 }
4076
4077 static HRESULT WINAPI AudioSessionManager_GetSessionEnumerator(
4078         IAudioSessionManager2 *iface, IAudioSessionEnumerator **out)
4079 {
4080     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4081     FIXME("(%p)->(%p) - stub\n", This, out);
4082     return E_NOTIMPL;
4083 }
4084
4085 static HRESULT WINAPI AudioSessionManager_RegisterSessionNotification(
4086         IAudioSessionManager2 *iface, IAudioSessionNotification *notification)
4087 {
4088     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4089     FIXME("(%p)->(%p) - stub\n", This, notification);
4090     return E_NOTIMPL;
4091 }
4092
4093 static HRESULT WINAPI AudioSessionManager_UnregisterSessionNotification(
4094         IAudioSessionManager2 *iface, IAudioSessionNotification *notification)
4095 {
4096     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4097     FIXME("(%p)->(%p) - stub\n", This, notification);
4098     return E_NOTIMPL;
4099 }
4100
4101 static HRESULT WINAPI AudioSessionManager_RegisterDuckNotification(
4102         IAudioSessionManager2 *iface, const WCHAR *session_id,
4103         IAudioVolumeDuckNotification *notification)
4104 {
4105     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4106     FIXME("(%p)->(%p) - stub\n", This, notification);
4107     return E_NOTIMPL;
4108 }
4109
4110 static HRESULT WINAPI AudioSessionManager_UnregisterDuckNotification(
4111         IAudioSessionManager2 *iface,
4112         IAudioVolumeDuckNotification *notification)
4113 {
4114     SessionMgr *This = impl_from_IAudioSessionManager2(iface);
4115     FIXME("(%p)->(%p) - stub\n", This, notification);
4116     return E_NOTIMPL;
4117 }
4118
4119 static const IAudioSessionManager2Vtbl AudioSessionManager2_Vtbl =
4120 {
4121     AudioSessionManager_QueryInterface,
4122     AudioSessionManager_AddRef,
4123     AudioSessionManager_Release,
4124     AudioSessionManager_GetAudioSessionControl,
4125     AudioSessionManager_GetSimpleAudioVolume,
4126     AudioSessionManager_GetSessionEnumerator,
4127     AudioSessionManager_RegisterSessionNotification,
4128     AudioSessionManager_UnregisterSessionNotification,
4129     AudioSessionManager_RegisterDuckNotification,
4130     AudioSessionManager_UnregisterDuckNotification
4131 };
4132
4133 HRESULT WINAPI AUDDRV_GetAudioSessionManager(IMMDevice *device,
4134         IAudioSessionManager2 **out)
4135 {
4136     SessionMgr *This;
4137
4138     This = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(SessionMgr));
4139     if(!This)
4140         return E_OUTOFMEMORY;
4141
4142     This->IAudioSessionManager2_iface.lpVtbl = &AudioSessionManager2_Vtbl;
4143     This->device = device;
4144     This->ref = 1;
4145
4146     *out = &This->IAudioSessionManager2_iface;
4147
4148     return S_OK;
4149 }
4150
4151 static unsigned int alsa_probe_num_speakers(char *name) {
4152     snd_pcm_t *handle;
4153     snd_pcm_hw_params_t *params;
4154     int err;
4155     unsigned int max_channels = 0;
4156
4157     if ((err = snd_pcm_open(&handle, name, SND_PCM_STREAM_PLAYBACK, SND_PCM_NONBLOCK)) < 0) {
4158         WARN("The device \"%s\" failed to open: %d (%s).\n",
4159                 name, err, snd_strerror(err));
4160         return 0;
4161     }
4162
4163     params = HeapAlloc(GetProcessHeap(), 0, snd_pcm_hw_params_sizeof());
4164     if (!params) {
4165         WARN("Out of memory.\n");
4166         snd_pcm_close(handle);
4167         return 0;
4168     }
4169
4170     if ((err = snd_pcm_hw_params_any(handle, params)) < 0) {
4171         WARN("snd_pcm_hw_params_any failed for \"%s\": %d (%s).\n",
4172                 name, err, snd_strerror(err));
4173         goto exit;
4174     }
4175
4176     if ((err = snd_pcm_hw_params_get_channels_max(params,
4177                     &max_channels)) < 0){
4178         WARN("Unable to get max channels: %d (%s)\n", err, snd_strerror(err));
4179         goto exit;
4180     }
4181
4182 exit:
4183     HeapFree(GetProcessHeap(), 0, params);
4184     snd_pcm_close(handle);
4185
4186     return max_channels;
4187 }
4188
4189 enum AudioDeviceConnectionType {
4190     AudioDeviceConnectionType_Unknown = 0,
4191     AudioDeviceConnectionType_PCI,
4192     AudioDeviceConnectionType_USB
4193 };
4194
4195 HRESULT WINAPI AUDDRV_GetPropValue(GUID *guid, const PROPERTYKEY *prop, PROPVARIANT *out)
4196 {
4197     char name[256];
4198     EDataFlow flow;
4199
4200     static const PROPERTYKEY devicepath_key = { /* undocumented? - {b3f8fa53-0004-438e-9003-51a46e139bfc},2 */
4201         {0xb3f8fa53, 0x0004, 0x438e, {0x90, 0x03, 0x51, 0xa4, 0x6e, 0x13, 0x9b, 0xfc}}, 2
4202     };
4203
4204     TRACE("%s, (%s,%u), %p\n", wine_dbgstr_guid(guid), wine_dbgstr_guid(&prop->fmtid), prop->pid, out);
4205
4206     if(!get_alsa_name_by_guid(guid, name, sizeof(name), &flow))
4207     {
4208         WARN("Unknown interface %s\n", debugstr_guid(guid));
4209         return E_NOINTERFACE;
4210     }
4211
4212     if(IsEqualPropertyKey(*prop, devicepath_key))
4213     {
4214         char uevent[MAX_PATH];
4215         FILE *fuevent;
4216         int card, device;
4217
4218         /* only implemented for identifiable devices, i.e. not "default" */
4219         if(!sscanf(name, "plughw:%u,%u", &card, &device))
4220             return E_NOTIMPL;
4221
4222         sprintf(uevent, "/sys/class/sound/card%u/device/uevent", card);
4223         fuevent = fopen(uevent, "r");
4224
4225         if(fuevent){
4226             enum AudioDeviceConnectionType connection = AudioDeviceConnectionType_Unknown;
4227             USHORT vendor_id = 0, product_id = 0;
4228             char line[256];
4229
4230             while (fgets(line, sizeof(line), fuevent)) {
4231                 char *val;
4232                 size_t val_len;
4233
4234                 if((val = strchr(line, '='))) {
4235                     val[0] = 0;
4236                     val++;
4237
4238                     val_len = strlen(val);
4239                     if(val_len > 0 && val[val_len - 1] == '\n') { val[val_len - 1] = 0; }
4240
4241                     if(!strcmp(line, "PCI_ID")){
4242                         connection = AudioDeviceConnectionType_PCI;
4243                         if(sscanf(val, "%hX:%hX", &vendor_id, &product_id)<2){
4244                             WARN("Unexpected input when reading PCI_ID in uevent file.\n");
4245                             connection = AudioDeviceConnectionType_Unknown;
4246                             break;
4247                         }
4248                     }else if(!strcmp(line, "DEVTYPE") && !strcmp(val,"usb_interface"))
4249                         connection = AudioDeviceConnectionType_USB;
4250                     else if(!strcmp(line, "PRODUCT"))
4251                         if(sscanf(val, "%hx/%hx/", &vendor_id, &product_id)<2){
4252                             WARN("Unexpected input when reading PRODUCT in uevent file.\n");
4253                             connection = AudioDeviceConnectionType_Unknown;
4254                             break;
4255                         }
4256                 }
4257             }
4258
4259             fclose(fuevent);
4260
4261             if(connection == AudioDeviceConnectionType_USB || connection == AudioDeviceConnectionType_PCI){
4262                 static const WCHAR usbformatW[] = { '{','1','}','.','U','S','B','\\','V','I','D','_',
4263                     '%','0','4','X','&','P','I','D','_','%','0','4','X','\\',
4264                     '%','u','&','%','0','8','X',0 }; /* "{1}.USB\VID_%04X&PID_%04X\%u&%08X" */
4265                 static const WCHAR pciformatW[] = { '{','1','}','.','H','D','A','U','D','I','O','\\','F','U','N','C','_','0','1','&',
4266                     'V','E','N','_','%','0','4','X','&','D','E','V','_',
4267                     '%','0','4','X','\\','%','u','&','%','0','8','X',0 }; /* "{1}.HDAUDIO\FUNC_01&VEN_%04X&DEV_%04X\%u&%08X" */
4268                 UINT serial_number;
4269
4270                 /* As hardly any audio devices have serial numbers, Windows instead
4271                 appears to use a persistent random number. We emulate this here
4272                 by instead using the last 8 hex digits of the GUID. */
4273                 serial_number = (guid->Data4[4] << 24) | (guid->Data4[5] << 16) | (guid->Data4[6] << 8) | guid->Data4[7];
4274
4275                 out->vt = VT_LPWSTR;
4276                 out->u.pwszVal = CoTaskMemAlloc(128 * sizeof(WCHAR));
4277
4278                 if(!out->u.pwszVal)
4279                     return E_OUTOFMEMORY;
4280
4281                 if(connection == AudioDeviceConnectionType_USB)
4282                     sprintfW( out->u.pwszVal, usbformatW, vendor_id, product_id, device, serial_number);
4283                 else if(connection == AudioDeviceConnectionType_PCI)
4284                     sprintfW( out->u.pwszVal, pciformatW, vendor_id, product_id, device, serial_number);
4285
4286                 return S_OK;
4287             }
4288         }else{
4289             WARN("Could not open %s for reading\n", uevent);
4290             return E_NOTIMPL;
4291         }
4292     } else if (flow != eCapture && IsEqualPropertyKey(*prop, PKEY_AudioEndpoint_PhysicalSpeakers)) {
4293         unsigned int num_speakers, card, device;
4294         char hwname[255];
4295
4296         if (sscanf(name, "plughw:%u,%u", &card, &device))
4297             sprintf(hwname, "hw:%u,%u", card, device); /* must be hw rather than plughw to work */
4298         else
4299             strcpy(hwname, name);
4300
4301         num_speakers = alsa_probe_num_speakers(hwname);
4302         if (num_speakers == 0)
4303             return E_FAIL;
4304
4305         out->vt = VT_UI4;
4306
4307         if (num_speakers > 6)
4308             out->u.ulVal = KSAUDIO_SPEAKER_STEREO;
4309         else if (num_speakers == 6)
4310             out->u.ulVal = KSAUDIO_SPEAKER_5POINT1;
4311         else if (num_speakers >= 4)
4312             out->u.ulVal = KSAUDIO_SPEAKER_QUAD;
4313         else if (num_speakers >= 2)
4314             out->u.ulVal = KSAUDIO_SPEAKER_STEREO;
4315         else if (num_speakers == 1)
4316             out->u.ulVal = KSAUDIO_SPEAKER_MONO;
4317
4318         return S_OK;
4319     }
4320
4321     TRACE("Unimplemented property %s,%u\n", wine_dbgstr_guid(&prop->fmtid), prop->pid);
4322
4323     return E_NOTIMPL;
4324 }