dlls/dsound/primary.c

   1 /*                      DirectSound
   2  *
   3  * Copyright 1998 Marcus Meissner
   4  * Copyright 1998 Rob Riggs
   5  * Copyright 2000-2002 TransGaming Technologies, Inc.
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  20  */
  21
  22 #include <stdarg.h>
  23
  24 #define NONAMELESSSTRUCT
  25 #define NONAMELESSUNION
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "mmsystem.h"
  29 #include "winreg.h"
  30 #include "winternl.h"
  31 #include "mmddk.h"
  32 #include "wine/debug.h"
  33 #include "dsound.h"
  34 #include "dsdriver.h"
  35 #include "dsound_private.h"
  36
  37 WINE_DEFAULT_DEBUG_CHANNEL(dsound);
  38
  39 void DSOUND_RecalcPrimary(IDirectSoundImpl *This)
  40 {
  41         DWORD nBlockAlign;
  42         TRACE("(%p)\n",This);
  43
  44         nBlockAlign = This->pwfx->nBlockAlign;
  45         if (This->hwbuf) {
  46                 DWORD fraglen;
  47                 /* let fragment size approximate the timer delay */
  48                 fraglen = (This->pwfx->nSamplesPerSec * DS_TIME_DEL / 1000) * nBlockAlign;
  49                 /* reduce fragment size until an integer number of them fits in the buffer */
  50                 /* (FIXME: this may or may not be a good idea) */
  51                 while (This->buflen % fraglen) fraglen -= nBlockAlign;
  52                 This->fraglen = fraglen;
  53                 TRACE("fraglen=%ld\n", This->fraglen);
  54         }
  55         /* calculate the 10ms write lead */
  56         This->writelead = (This->pwfx->nSamplesPerSec / 100) * nBlockAlign;
  57 }
  58
  59 static HRESULT DSOUND_PrimaryOpen(IDirectSoundImpl *This)
  60 {
  61         HRESULT err = DS_OK;
  62         TRACE("(%p)\n",This);
  63
  64         /* are we using waveOut stuff? */
  65         if (!This->driver) {
  66                 LPBYTE newbuf;
  67                 DWORD buflen;
  68                 HRESULT merr = DS_OK;
  69                 /* Start in pause mode, to allow buffers to get filled */
  70                 waveOutPause(This->hwo);
  71                 if (This->state == STATE_PLAYING) This->state = STATE_STARTING;
  72                 else if (This->state == STATE_STOPPING) This->state = STATE_STOPPED;
  73                 /* use fragments of 10ms (1/100s) each (which should get us within
  74                  * the documented write cursor lead of 10-15ms) */
  75                 buflen = ((This->pwfx->nSamplesPerSec / 100) * This->pwfx->nBlockAlign) * DS_HEL_FRAGS;
  76                 TRACE("desired buflen=%ld, old buffer=%p\n", buflen, This->buffer);
  77                 /* reallocate emulated primary buffer */
  78
  79                 if (This->buffer)
  80                         newbuf = HeapReAlloc(GetProcessHeap(),0,This->buffer,buflen);
  81                 else
  82                         newbuf = HeapAlloc(GetProcessHeap(),0,buflen);
  83
  84                 if (newbuf == NULL) {
  85                         ERR("failed to allocate primary buffer\n");
  86                         merr = DSERR_OUTOFMEMORY;
  87                         /* but the old buffer might still exist and must be re-prepared */
  88                 } else {
  89                         This->buffer = newbuf;
  90                         This->buflen = buflen;
  91                 }
  92                 if (This->buffer) {
  93                         unsigned c;
  94
  95                         This->fraglen = This->buflen / DS_HEL_FRAGS;
  96
  97                         /* prepare fragment headers */
  98                         for (c=0; c<DS_HEL_FRAGS; c++) {
  99                                 This->pwave[c]->lpData = This->buffer + c*This->fraglen;
 100                                 This->pwave[c]->dwBufferLength = This->fraglen;
 101                                 This->pwave[c]->dwUser = (DWORD)This;
 102                                 This->pwave[c]->dwFlags = 0;
 103                                 This->pwave[c]->dwLoops = 0;
 104                                 err = mmErr(waveOutPrepareHeader(This->hwo,This->pwave[c],sizeof(WAVEHDR)));
 105                                 if (err != DS_OK) {
 106                                         while (c--)
 107                                                 waveOutUnprepareHeader(This->hwo,This->pwave[c],sizeof(WAVEHDR));
 108                                         break;
 109                                 }
 110                         }
 111
 112                         This->pwplay = 0;
 113                         This->pwwrite = 0;
 114                         This->pwqueue = 0;
 115                         This->playpos = 0;
 116                         This->mixpos = 0;
 117                         FillMemory(This->buffer, This->buflen, (This->pwfx->wBitsPerSample == 8) ? 128 : 0);
 118                         TRACE("fraglen=%ld\n", This->fraglen);
 119                         DSOUND_WaveQueue(This, (DWORD)-1);
 120                 }
 121                 if ((err == DS_OK) && (merr != DS_OK))
 122                         err = merr;
 123         } else if (!This->hwbuf) {
 124                 err = IDsDriver_CreateSoundBuffer(This->driver,This->pwfx,
 125                                                   DSBCAPS_PRIMARYBUFFER,0,
 126                                                   &(This->buflen),&(This->buffer),
 127                                                   (LPVOID*)&(This->hwbuf));
 128                 if (err != DS_OK) {
 129                         WARN("IDsDriver_CreateSoundBuffer failed\n");
 130                         return err;
 131                 }
 132
 133                 if (dsound->state == STATE_PLAYING) dsound->state = STATE_STARTING;
 134                 else if (dsound->state == STATE_STOPPING) dsound->state = STATE_STOPPED;
 135         }
 136
 137         return err;
 138 }
 139
 140
 141 static void DSOUND_PrimaryClose(IDirectSoundImpl *This)
 142 {
 143         TRACE("(%p)\n",This);
 144
 145         /* are we using waveOut stuff? */
 146         if (!This->hwbuf) {
 147                 unsigned c;
 148
 149                 This->pwqueue = (DWORD)-1; /* resetting queues */
 150                 waveOutReset(This->hwo);
 151                 for (c=0; c<DS_HEL_FRAGS; c++)
 152                         waveOutUnprepareHeader(This->hwo, This->pwave[c], sizeof(WAVEHDR));
 153                 This->pwqueue = 0;
 154         } else {
 155                 if (IDsDriverBuffer_Release(This->hwbuf) == 0)
 156                         This->hwbuf = 0;
 157         }
 158 }
 159
 160 HRESULT DSOUND_PrimaryCreate(IDirectSoundImpl *This)
 161 {
 162         HRESULT err = DS_OK;
 163         TRACE("(%p)\n",This);
 164
 165         This->buflen = This->pwfx->nAvgBytesPerSec;
 166
 167         /* FIXME: verify that hardware capabilities (DSCAPS_PRIMARY flags) match */
 168
 169         if (This->driver) {
 170                 err = IDsDriver_CreateSoundBuffer(This->driver,This->pwfx,
 171                                                   DSBCAPS_PRIMARYBUFFER,0,
 172                                                   &(This->buflen),&(This->buffer),
 173                                                   (LPVOID*)&(This->hwbuf));
 174                 if (err != DS_OK) {
 175                         WARN("IDsDriver_CreateSoundBuffer failed\n");
 176                         return err;
 177                 }
 178         }
 179         if (!This->hwbuf) {
 180                 /* Allocate memory for HEL buffer headers */
 181                 unsigned c;
 182                 for (c=0; c<DS_HEL_FRAGS; c++) {
 183                         This->pwave[c] = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(WAVEHDR));
 184                         if (!This->pwave[c]) {
 185                                 /* Argh, out of memory */
 186                                 while (c--) {
 187                                         HeapFree(GetProcessHeap(),0,This->pwave[c]);
 188                                 }
 189                                 WARN("out of memory\n");
 190                                 return DSERR_OUTOFMEMORY;
 191                         }
 192                 }
 193         }
 194
 195         err = DSOUND_PrimaryOpen(This);
 196
 197         if (err != DS_OK) {
 198                 WARN("DSOUND_PrimaryOpen failed\n");
 199                 return err;
 200         }
 201
 202         /* calculate fragment size and write lead */
 203         DSOUND_RecalcPrimary(This);
 204         This->state = STATE_STOPPED;
 205         return DS_OK;
 206 }
 207
 208 HRESULT DSOUND_PrimaryDestroy(IDirectSoundImpl *This)
 209 {
 210         TRACE("(%p)\n",This);
 211
 212         DSOUND_PrimaryClose(This);
 213         if (This->driver) {
 214                 if (This->hwbuf) {
 215                         if (IDsDriverBuffer_Release(This->hwbuf) == 0)
 216                                 This->hwbuf = 0;
 217                 }
 218         } else {
 219                 unsigned c;
 220                 for (c=0; c<DS_HEL_FRAGS; c++) {
 221                         HeapFree(GetProcessHeap(),0,This->pwave[c]);
 222                 }
 223         }
 224         HeapFree(GetProcessHeap(),0,This->pwfx);
 225         This->pwfx=NULL;
 226         return DS_OK;
 227 }
 228
 229 HRESULT DSOUND_PrimaryPlay(IDirectSoundImpl *This)
 230 {
 231         HRESULT err = DS_OK;
 232         TRACE("(%p)\n",This);
 233
 234         if (This->hwbuf) {
 235                 err = IDsDriverBuffer_Play(This->hwbuf, 0, 0, DSBPLAY_LOOPING);
 236                 if (err != DS_OK)
 237                         WARN("IDsDriverBuffer_Play failed\n");
 238         } else {
 239                 err = mmErr(waveOutRestart(This->hwo));
 240                 if (err != DS_OK)
 241                         WARN("waveOutRestart failed\n");
 242         }
 243
 244         return err;
 245 }
 246
 247 HRESULT DSOUND_PrimaryStop(IDirectSoundImpl *This)
 248 {
 249         HRESULT err = DS_OK;
 250         TRACE("(%p)\n",This);
 251
 252         if (This->hwbuf) {
 253                 err = IDsDriverBuffer_Stop(This->hwbuf);
 254                 if (err == DSERR_BUFFERLOST) {
 255                         DWORD flags = CALLBACK_FUNCTION;
 256                         if (ds_hw_accel != DS_HW_ACCEL_EMULATION)
 257                                 flags |= WAVE_DIRECTSOUND;
 258                         /* Wine-only: the driver wants us to reopen the device */
 259                         /* FIXME: check for errors */
 260                         IDsDriverBuffer_Release(This->hwbuf);
 261                         waveOutClose(This->hwo);
 262                         This->hwo = 0;
 263                         err = mmErr(waveOutOpen(&(This->hwo), This->drvdesc.dnDevNode,
 264                                                 This->pwfx, (DWORD)DSOUND_callback, (DWORD)This,
 265                                                 flags));
 266                         if (err == DS_OK) {
 267                                 err = IDsDriver_CreateSoundBuffer(This->driver,This->pwfx,
 268                                                                   DSBCAPS_PRIMARYBUFFER,0,
 269                                                                   &(This->buflen),&(This->buffer),
 270                                                                   (LPVOID)&(This->hwbuf));
 271                                 if (err != DS_OK)
 272                                         WARN("IDsDriver_CreateSoundBuffer failed\n");
 273                         } else {
 274                                 WARN("waveOutOpen failed\n");
 275                         }
 276                 } else if (err != DS_OK) {
 277                         WARN("IDsDriverBuffer_Stop failed\n");
 278                 }
 279         } else {
 280                 err = mmErr(waveOutPause(This->hwo));
 281                 if (err != DS_OK)
 282                         WARN("waveOutPause failed\n");
 283         }
 284         return err;
 285 }
 286
 287 HRESULT DSOUND_PrimaryGetPosition(IDirectSoundImpl *This, LPDWORD playpos, LPDWORD writepos)
 288 {
 289         TRACE("(%p,%p,%p)\n",This,playpos,writepos);
 290
 291         if (This->hwbuf) {
 292                 HRESULT err=IDsDriverBuffer_GetPosition(This->hwbuf,playpos,writepos);
 293                 if (err) {
 294                         WARN("IDsDriverBuffer_GetPosition failed\n");
 295                         return err;
 296                 }
 297         } else {
 298                 if (playpos) {
 299                         MMTIME mtime;
 300                         mtime.wType = TIME_BYTES;
 301                         waveOutGetPosition(This->hwo, &mtime, sizeof(mtime));
 302                         mtime.u.cb = mtime.u.cb % This->buflen;
 303                         *playpos = mtime.u.cb;
 304                 }
 305                 if (writepos) {
 306                         /* the writepos should only be used by apps with WRITEPRIMARY priority,
 307                          * in which case our software mixer is disabled anyway */
 308                         *writepos = (This->pwplay + ds_hel_margin) * This->fraglen;
 309                         while (*writepos >= This->buflen)
 310                                 *writepos -= This->buflen;
 311                 }
 312         }
 313         TRACE("playpos = %ld, writepos = %ld (%p, time=%ld)\n", playpos?*playpos:0, writepos?*writepos:0, This, GetTickCount());
 314         return DS_OK;
 315 }
 316
 317 /*******************************************************************************
 318  *              PrimaryBuffer
 319  */
 320 /* This sets this format for the <em>Primary Buffer Only</em> */
 321 /* See file:///cdrom/sdk52/docs/worddoc/dsound.doc page 120 */
 322 static HRESULT WINAPI PrimaryBufferImpl_SetFormat(
 323         LPDIRECTSOUNDBUFFER8 iface,LPCWAVEFORMATEX wfex
 324 ) {
 325         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 326         IDirectSoundImpl* dsound = This->dsound;
 327         HRESULT err = DS_OK;
 328         int i, alloc_size, cp_size;
 329         DWORD nSamplesPerSec;
 330         TRACE("(%p,%p)\n",This,wfex);
 331
 332         if (This->dsound->priolevel == DSSCL_NORMAL) {
 333                 WARN("failed priority check!\n");
 334                 return DSERR_PRIOLEVELNEEDED;
 335         }
 336
 337         /* Let's be pedantic! */
 338         if (wfex == NULL) {
 339                 WARN("invalid parameter: wfex==NULL!\n");
 340                 return DSERR_INVALIDPARAM;
 341         }
 342         TRACE("(formattag=0x%04x,chans=%d,samplerate=%ld,"
 343               "bytespersec=%ld,blockalign=%d,bitspersamp=%d,cbSize=%d)\n",
 344               wfex->wFormatTag, wfex->nChannels, wfex->nSamplesPerSec,
 345               wfex->nAvgBytesPerSec, wfex->nBlockAlign,
 346               wfex->wBitsPerSample, wfex->cbSize);
 347
 348         /* **** */
 349         RtlAcquireResourceExclusive(&(dsound->buffer_list_lock), TRUE);
 350         EnterCriticalSection(&(dsound->mixlock));
 351
 352         if (wfex->wFormatTag == WAVE_FORMAT_PCM) {
 353             alloc_size = sizeof(WAVEFORMATEX);
 354             cp_size = sizeof(PCMWAVEFORMAT);
 355         } else
 356             alloc_size = cp_size = sizeof(WAVEFORMATEX) + wfex->cbSize;
 357
 358         dsound->pwfx = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,dsound->pwfx,alloc_size);
 359
 360         nSamplesPerSec = dsound->pwfx->nSamplesPerSec;
 361
 362         CopyMemory(dsound->pwfx, wfex, cp_size);
 363
 364         if (dsound->drvdesc.dwFlags & DSDDESC_DOMMSYSTEMSETFORMAT) {
 365                 DWORD flags = CALLBACK_FUNCTION;
 366                 if (ds_hw_accel != DS_HW_ACCEL_EMULATION)
 367                         flags |= WAVE_DIRECTSOUND;
 368                 /* FIXME: check for errors */
 369                 DSOUND_PrimaryClose(dsound);
 370                 waveOutClose(dsound->hwo);
 371                 dsound->hwo = 0;
 372                 err = mmErr(waveOutOpen(&(dsound->hwo), dsound->drvdesc.dnDevNode,
 373                                         dsound->pwfx, (DWORD)DSOUND_callback, (DWORD)dsound,
 374                                         flags));
 375                 if (err == DS_OK) {
 376                     err = DSOUND_PrimaryOpen(dsound);
 377                     if (err != DS_OK) {
 378                         WARN("DSOUND_PrimaryOpen failed\n");
 379                         goto done;
 380                     }
 381                 } else {
 382                         WARN("waveOutOpen failed\n");
 383                         goto done;
 384                 }
 385         } else if (dsound->hwbuf) {
 386                 err = IDsDriverBuffer_SetFormat(dsound->hwbuf, dsound->pwfx);
 387                 if (err == DSERR_BUFFERLOST) {
 388                         /* Wine-only: the driver wants us to recreate the HW buffer */
 389                         IDsDriverBuffer_Release(dsound->hwbuf);
 390                         err = IDsDriver_CreateSoundBuffer(dsound->driver,dsound->pwfx,
 391                                                           DSBCAPS_PRIMARYBUFFER,0,
 392                                                           &(dsound->buflen),&(dsound->buffer),
 393                                                           (LPVOID)&(dsound->hwbuf));
 394                         if (err != DS_OK) {
 395                                 WARN("IDsDriver_CreateSoundBuffer failed\n");
 396                                 goto done;
 397                         }
 398                         if (dsound->state == STATE_PLAYING) dsound->state = STATE_STARTING;
 399                         else if (dsound->state == STATE_STOPPING) dsound->state = STATE_STOPPED;
 400                 } else {
 401                         WARN("IDsDriverBuffer_SetFormat failed\n");
 402                         goto done;
 403                 }
 404                 /* FIXME: should we set err back to DS_OK in all cases ? */
 405         }
 406         DSOUND_RecalcPrimary(dsound);
 407
 408         if (nSamplesPerSec != dsound->pwfx->nSamplesPerSec) {
 409                 IDirectSoundBufferImpl** dsb = dsound->buffers;
 410                 for (i = 0; i < dsound->nrofbuffers; i++, dsb++) {
 411                         /* **** */
 412                         EnterCriticalSection(&((*dsb)->lock));
 413
 414                         (*dsb)->freqAdjust = ((*dsb)->freq << DSOUND_FREQSHIFT) /
 415                                 wfex->nSamplesPerSec;
 416
 417                         LeaveCriticalSection(&((*dsb)->lock));
 418                         /* **** */
 419                 }
 420         }
 421
 422 done:
 423         LeaveCriticalSection(&(dsound->mixlock));
 424         RtlReleaseResource(&(dsound->buffer_list_lock));
 425         /* **** */
 426
 427         return err;
 428 }
 429
 430 static HRESULT WINAPI PrimaryBufferImpl_SetVolume(
 431         LPDIRECTSOUNDBUFFER8 iface,LONG vol
 432 ) {
 433         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 434         IDirectSoundImpl* dsound = This->dsound;
 435         DWORD ampfactors;
 436         DSVOLUMEPAN volpan;
 437         HRESULT hres = DS_OK;
 438
 439         TRACE("(%p,%ld)\n",This,vol);
 440
 441         if (!(This->dsound->dsbd.dwFlags & DSBCAPS_CTRLVOLUME)) {
 442                 WARN("control unavailable\n");
 443                 return DSERR_CONTROLUNAVAIL;
 444         }
 445
 446         if ((vol > DSBVOLUME_MAX) || (vol < DSBVOLUME_MIN)) {
 447                 WARN("invalid parameter: vol = %ld\n", vol);
 448                 return DSERR_INVALIDPARAM;
 449         }
 450
 451         /* **** */
 452         EnterCriticalSection(&(dsound->mixlock));
 453
 454         waveOutGetVolume(dsound->hwo, &ampfactors);
 455         volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
 456         volpan.dwTotalRightAmpFactor=ampfactors >> 16;
 457         DSOUND_AmpFactorToVolPan(&volpan);
 458         if (vol != volpan.lVolume) {
 459             volpan.lVolume=vol;
 460             DSOUND_RecalcVolPan(&volpan);
 461             if (dsound->hwbuf) {
 462                 hres = IDsDriverBuffer_SetVolumePan(dsound->hwbuf, &volpan);
 463                 if (hres != DS_OK)
 464                     WARN("IDsDriverBuffer_SetVolumePan failed\n");
 465             } else {
 466                 ampfactors = (volpan.dwTotalLeftAmpFactor & 0xffff) | (volpan.dwTotalRightAmpFactor << 16);
 467                 waveOutSetVolume(dsound->hwo, ampfactors);
 468             }
 469         }
 470
 471         LeaveCriticalSection(&(dsound->mixlock));
 472         /* **** */
 473
 474         return hres;
 475 }
 476
 477 static HRESULT WINAPI PrimaryBufferImpl_GetVolume(
 478         LPDIRECTSOUNDBUFFER8 iface,LPLONG vol
 479 ) {
 480         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 481         DWORD ampfactors;
 482         DSVOLUMEPAN volpan;
 483         TRACE("(%p,%p)\n",This,vol);
 484
 485         if (!(This->dsound->dsbd.dwFlags & DSBCAPS_CTRLVOLUME)) {
 486                 WARN("control unavailable\n");
 487                 return DSERR_CONTROLUNAVAIL;
 488         }
 489
 490         if (vol == NULL) {
 491                 WARN("invalid parameter: vol = NULL\n");
 492                 return DSERR_INVALIDPARAM;
 493         }
 494
 495         waveOutGetVolume(dsound->hwo, &ampfactors);
 496         volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
 497         volpan.dwTotalRightAmpFactor=ampfactors >> 16;
 498         DSOUND_AmpFactorToVolPan(&volpan);
 499         *vol = volpan.lVolume;
 500         return DS_OK;
 501 }
 502
 503 static HRESULT WINAPI PrimaryBufferImpl_SetFrequency(
 504         LPDIRECTSOUNDBUFFER8 iface,DWORD freq
 505 ) {
 506         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 507
 508         TRACE("(%p,%ld)\n",This,freq);
 509
 510         /* You cannot set the frequency of the primary buffer */
 511         WARN("control unavailable\n");
 512         return DSERR_CONTROLUNAVAIL;
 513 }
 514
 515 static HRESULT WINAPI PrimaryBufferImpl_Play(
 516         LPDIRECTSOUNDBUFFER8 iface,DWORD reserved1,DWORD reserved2,DWORD flags
 517 ) {
 518         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 519         IDirectSoundImpl* dsound = This->dsound;
 520
 521         TRACE("(%p,%08lx,%08lx,%08lx)\n",
 522                 This,reserved1,reserved2,flags
 523         );
 524
 525         if (!(flags & DSBPLAY_LOOPING)) {
 526                 WARN("invalid parameter: flags = %08lx\n", flags);
 527                 return DSERR_INVALIDPARAM;
 528         }
 529
 530         /* **** */
 531         EnterCriticalSection(&(dsound->mixlock));
 532
 533         if (dsound->state == STATE_STOPPED)
 534                 dsound->state = STATE_STARTING;
 535         else if (dsound->state == STATE_STOPPING)
 536                 dsound->state = STATE_PLAYING;
 537
 538         LeaveCriticalSection(&(dsound->mixlock));
 539         /* **** */
 540
 541         return DS_OK;
 542 }
 543
 544 static HRESULT WINAPI PrimaryBufferImpl_Stop(LPDIRECTSOUNDBUFFER8 iface)
 545 {
 546         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 547         IDirectSoundImpl* dsound = This->dsound;
 548
 549         TRACE("(%p)\n",This);
 550
 551         /* **** */
 552         EnterCriticalSection(&(dsound->mixlock));
 553
 554         if (dsound->state == STATE_PLAYING)
 555                 dsound->state = STATE_STOPPING;
 556         else if (dsound->state == STATE_STARTING)
 557                 dsound->state = STATE_STOPPED;
 558
 559         LeaveCriticalSection(&(dsound->mixlock));
 560         /* **** */
 561
 562         return DS_OK;
 563 }
 564
 565 static ULONG WINAPI PrimaryBufferImpl_AddRef(LPDIRECTSOUNDBUFFER8 iface)
 566 {
 567     PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 568     ULONG ref = InterlockedIncrement(&(This->ref));
 569     TRACE("(%p) ref was %ld\n", This, ref - 1);
 570     return ref;
 571 }
 572
 573 static ULONG WINAPI PrimaryBufferImpl_Release(LPDIRECTSOUNDBUFFER8 iface)
 574 {
 575     PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 576     DWORD ref = InterlockedDecrement(&(This->ref));
 577     TRACE("(%p) ref was %ld\n", This, ref + 1);
 578
 579     if (!ref) {
 580         This->dsound->primary = NULL;
 581         HeapFree(GetProcessHeap(), 0, This);
 582         TRACE("(%p) released\n", This);
 583     }
 584     return ref;
 585 }
 586
 587 static HRESULT WINAPI PrimaryBufferImpl_GetCurrentPosition(
 588         LPDIRECTSOUNDBUFFER8 iface,LPDWORD playpos,LPDWORD writepos
 589 ) {
 590         HRESULT hres;
 591         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 592         IDirectSoundImpl* dsound = This->dsound;
 593
 594         TRACE("(%p,%p,%p)\n",This,playpos,writepos);
 595         hres = DSOUND_PrimaryGetPosition(dsound, playpos, writepos);
 596         if (hres != DS_OK) {
 597                 WARN("DSOUND_PrimaryGetPosition failed\n");
 598                 return hres;
 599         }
 600         if (writepos) {
 601                 if (dsound->state != STATE_STOPPED)
 602                         /* apply the documented 10ms lead to writepos */
 603                         *writepos += dsound->writelead;
 604                 while (*writepos >= dsound->buflen) *writepos -= dsound->buflen;
 605         }
 606         TRACE("playpos = %ld, writepos = %ld (%p, time=%ld)\n", playpos?*playpos:0, writepos?*writepos:0, This, GetTickCount());
 607         return DS_OK;
 608 }
 609
 610 static HRESULT WINAPI PrimaryBufferImpl_GetStatus(
 611         LPDIRECTSOUNDBUFFER8 iface,LPDWORD status
 612 ) {
 613         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 614         TRACE("(%p,%p), thread is %04lx\n",This,status,GetCurrentThreadId());
 615
 616         if (status == NULL) {
 617                 WARN("invalid parameter: status == NULL\n");
 618                 return DSERR_INVALIDPARAM;
 619         }
 620
 621         *status = 0;
 622         if ((This->dsound->state == STATE_STARTING) ||
 623             (This->dsound->state == STATE_PLAYING))
 624                 *status |= DSBSTATUS_PLAYING | DSBSTATUS_LOOPING;
 625
 626         TRACE("status=%lx\n", *status);
 627         return DS_OK;
 628 }
 629
 630
 631 static HRESULT WINAPI PrimaryBufferImpl_GetFormat(
 632     LPDIRECTSOUNDBUFFER8 iface,
 633     LPWAVEFORMATEX lpwf,
 634     DWORD wfsize,
 635     LPDWORD wfwritten)
 636 {
 637     DWORD size;
 638     PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 639     TRACE("(%p,%p,%ld,%p)\n",This,lpwf,wfsize,wfwritten);
 640
 641     size = sizeof(WAVEFORMATEX) + This->dsound->pwfx->cbSize;
 642
 643     if (lpwf) { /* NULL is valid */
 644         if (wfsize >= size) {
 645             CopyMemory(lpwf,This->dsound->pwfx,size);
 646             if (wfwritten)
 647                 *wfwritten = size;
 648         } else {
 649             WARN("invalid parameter: wfsize to small\n");
 650             if (wfwritten)
 651                 *wfwritten = 0;
 652             return DSERR_INVALIDPARAM;
 653         }
 654     } else {
 655         if (wfwritten)
 656             *wfwritten = sizeof(WAVEFORMATEX) + This->dsound->pwfx->cbSize;
 657         else {
 658             WARN("invalid parameter: wfwritten == NULL\n");
 659             return DSERR_INVALIDPARAM;
 660         }
 661     }
 662
 663     return DS_OK;
 664 }
 665
 666 static HRESULT WINAPI PrimaryBufferImpl_Lock(
 667         LPDIRECTSOUNDBUFFER8 iface,DWORD writecursor,DWORD writebytes,LPVOID lplpaudioptr1,LPDWORD audiobytes1,LPVOID lplpaudioptr2,LPDWORD audiobytes2,DWORD flags
 668 ) {
 669         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 670         IDirectSoundImpl* dsound = This->dsound;
 671
 672         TRACE("(%p,%ld,%ld,%p,%p,%p,%p,0x%08lx) at %ld\n",
 673                 This,
 674                 writecursor,
 675                 writebytes,
 676                 lplpaudioptr1,
 677                 audiobytes1,
 678                 lplpaudioptr2,
 679                 audiobytes2,
 680                 flags,
 681                 GetTickCount()
 682         );
 683
 684         if (dsound->priolevel != DSSCL_WRITEPRIMARY) {
 685                 WARN("failed priority check!\n");
 686                 return DSERR_PRIOLEVELNEEDED;
 687         }
 688
 689         if (flags & DSBLOCK_FROMWRITECURSOR) {
 690                 DWORD writepos;
 691                 HRESULT hres;
 692                 /* GetCurrentPosition does too much magic to duplicate here */
 693                 hres = IDirectSoundBuffer_GetCurrentPosition(iface, NULL, &writepos);
 694                 if (hres != DS_OK) {
 695                         WARN("IDirectSoundBuffer_GetCurrentPosition failed\n");
 696                         return hres;
 697                 }
 698                 writecursor += writepos;
 699         }
 700         while (writecursor >= dsound->buflen)
 701                 writecursor -= dsound->buflen;
 702         if (flags & DSBLOCK_ENTIREBUFFER)
 703                 writebytes = dsound->buflen;
 704         if (writebytes > dsound->buflen)
 705                 writebytes = dsound->buflen;
 706
 707         if (!(dsound->drvdesc.dwFlags & DSDDESC_DONTNEEDPRIMARYLOCK) && dsound->hwbuf) {
 708                 HRESULT hres;
 709                 hres = IDsDriverBuffer_Lock(dsound->hwbuf,
 710                                             lplpaudioptr1, audiobytes1,
 711                                             lplpaudioptr2, audiobytes2,
 712                                             writecursor, writebytes,
 713                                             0);
 714                 if (hres != DS_OK) {
 715                         WARN("IDsDriverBuffer_Lock failed\n");
 716                         return hres;
 717                 }
 718         } else {
 719                 if (writecursor+writebytes <= dsound->buflen) {
 720                         *(LPBYTE*)lplpaudioptr1 = dsound->buffer+writecursor;
 721                         *audiobytes1 = writebytes;
 722                         if (lplpaudioptr2)
 723                                 *(LPBYTE*)lplpaudioptr2 = NULL;
 724                         if (audiobytes2)
 725                                 *audiobytes2 = 0;
 726                         TRACE("->%ld.0\n",writebytes);
 727                 } else {
 728                         *(LPBYTE*)lplpaudioptr1 = dsound->buffer+writecursor;
 729                         *audiobytes1 = dsound->buflen-writecursor;
 730                         if (lplpaudioptr2)
 731                                 *(LPBYTE*)lplpaudioptr2 = dsound->buffer;
 732                         if (audiobytes2)
 733                                 *audiobytes2 = writebytes-(dsound->buflen-writecursor);
 734                         TRACE("->%ld.%ld\n",*audiobytes1,audiobytes2?*audiobytes2:0);
 735                 }
 736         }
 737         return DS_OK;
 738 }
 739
 740 static HRESULT WINAPI PrimaryBufferImpl_SetCurrentPosition(
 741         LPDIRECTSOUNDBUFFER8 iface,DWORD newpos
 742 ) {
 743         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 744         TRACE("(%p,%ld)\n",This,newpos);
 745
 746         /* You cannot set the position of the primary buffer */
 747         WARN("invalid call\n");
 748         return DSERR_INVALIDCALL;
 749 }
 750
 751 static HRESULT WINAPI PrimaryBufferImpl_SetPan(
 752         LPDIRECTSOUNDBUFFER8 iface,LONG pan
 753 ) {
 754         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 755         IDirectSoundImpl* dsound = This->dsound;
 756         DWORD ampfactors;
 757         DSVOLUMEPAN volpan;
 758         HRESULT hres = DS_OK;
 759
 760         TRACE("(%p,%ld)\n",This,pan);
 761
 762         if (!(This->dsound->dsbd.dwFlags & DSBCAPS_CTRLPAN)) {
 763                 WARN("control unavailable\n");
 764                 return DSERR_CONTROLUNAVAIL;
 765         }
 766
 767         if ((pan > DSBPAN_RIGHT) || (pan < DSBPAN_LEFT)) {
 768                 WARN("invalid parameter: pan = %ld\n", pan);
 769                 return DSERR_INVALIDPARAM;
 770         }
 771
 772         /* **** */
 773         EnterCriticalSection(&(dsound->mixlock));
 774
 775         waveOutGetVolume(dsound->hwo, &ampfactors);
 776         volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
 777         volpan.dwTotalRightAmpFactor=ampfactors >> 16;
 778         DSOUND_AmpFactorToVolPan(&volpan);
 779         if (pan != volpan.lPan) {
 780             volpan.lPan=pan;
 781             DSOUND_RecalcVolPan(&volpan);
 782             if (dsound->hwbuf) {
 783                 hres = IDsDriverBuffer_SetVolumePan(dsound->hwbuf, &volpan);
 784                 if (hres != DS_OK)
 785                     WARN("IDsDriverBuffer_SetVolumePan failed\n");
 786             } else {
 787                 ampfactors = (volpan.dwTotalLeftAmpFactor & 0xffff) | (volpan.dwTotalRightAmpFactor << 16);
 788                 waveOutSetVolume(dsound->hwo, ampfactors);
 789             }
 790         }
 791
 792         LeaveCriticalSection(&(dsound->mixlock));
 793         /* **** */
 794
 795         return hres;
 796 }
 797
 798 static HRESULT WINAPI PrimaryBufferImpl_GetPan(
 799         LPDIRECTSOUNDBUFFER8 iface,LPLONG pan
 800 ) {
 801         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 802         DWORD ampfactors;
 803         DSVOLUMEPAN volpan;
 804         TRACE("(%p,%p)\n",This,pan);
 805
 806         if (!(This->dsound->dsbd.dwFlags & DSBCAPS_CTRLPAN)) {
 807                 WARN("control unavailable\n");
 808                 return DSERR_CONTROLUNAVAIL;
 809         }
 810
 811         if (pan == NULL) {
 812                 WARN("invalid parameter: pan == NULL\n");
 813                 return DSERR_INVALIDPARAM;
 814         }
 815
 816         waveOutGetVolume(dsound->hwo, &ampfactors);
 817         volpan.dwTotalLeftAmpFactor=ampfactors & 0xffff;
 818         volpan.dwTotalRightAmpFactor=ampfactors >> 16;
 819         DSOUND_AmpFactorToVolPan(&volpan);
 820         *pan = volpan.lPan;
 821         return DS_OK;
 822 }
 823
 824 static HRESULT WINAPI PrimaryBufferImpl_Unlock(
 825         LPDIRECTSOUNDBUFFER8 iface,LPVOID p1,DWORD x1,LPVOID p2,DWORD x2
 826 ) {
 827         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 828         IDirectSoundImpl* dsound = This->dsound;
 829
 830         TRACE("(%p,%p,%ld,%p,%ld)\n", This,p1,x1,p2,x2);
 831
 832         if (dsound->priolevel != DSSCL_WRITEPRIMARY) {
 833                 WARN("failed priority check!\n");
 834                 return DSERR_PRIOLEVELNEEDED;
 835         }
 836
 837         if (!(dsound->drvdesc.dwFlags & DSDDESC_DONTNEEDPRIMARYLOCK) && dsound->hwbuf) {
 838                 HRESULT hres;
 839
 840                 hres = IDsDriverBuffer_Unlock(dsound->hwbuf, p1, x1, p2, x2);
 841                 if (hres != DS_OK) {
 842                         WARN("IDsDriverBuffer_Unlock failed\n");
 843                         return hres;
 844                 }
 845         }
 846
 847         return DS_OK;
 848 }
 849
 850 static HRESULT WINAPI PrimaryBufferImpl_Restore(
 851         LPDIRECTSOUNDBUFFER8 iface
 852 ) {
 853         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 854         FIXME("(%p):stub\n",This);
 855         return DS_OK;
 856 }
 857
 858 static HRESULT WINAPI PrimaryBufferImpl_GetFrequency(
 859         LPDIRECTSOUNDBUFFER8 iface,LPDWORD freq
 860 ) {
 861         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 862         TRACE("(%p,%p)\n",This,freq);
 863
 864         if (freq == NULL) {
 865                 WARN("invalid parameter: freq == NULL\n");
 866                 return DSERR_INVALIDPARAM;
 867         }
 868
 869         if (!(This->dsound->dsbd.dwFlags & DSBCAPS_CTRLFREQUENCY)) {
 870                 WARN("control unavailable\n");
 871                 return DSERR_CONTROLUNAVAIL;
 872         }
 873
 874         *freq = This->dsound->pwfx->nSamplesPerSec;
 875         TRACE("-> %ld\n", *freq);
 876
 877         return DS_OK;
 878 }
 879
 880 static HRESULT WINAPI PrimaryBufferImpl_SetFX(
 881         LPDIRECTSOUNDBUFFER8 iface,DWORD dwEffectsCount,LPDSEFFECTDESC pDSFXDesc,LPDWORD pdwResultCodes
 882 ) {
 883         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 884         DWORD u;
 885
 886         FIXME("(%p,%lu,%p,%p): stub\n",This,dwEffectsCount,pDSFXDesc,pdwResultCodes);
 887
 888         if (pdwResultCodes)
 889                 for (u=0; u<dwEffectsCount; u++) pdwResultCodes[u] = DSFXR_UNKNOWN;
 890
 891         WARN("control unavailable\n");
 892         return DSERR_CONTROLUNAVAIL;
 893 }
 894
 895 static HRESULT WINAPI PrimaryBufferImpl_AcquireResources(
 896         LPDIRECTSOUNDBUFFER8 iface,DWORD dwFlags,DWORD dwEffectsCount,LPDWORD pdwResultCodes
 897 ) {
 898         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 899         DWORD u;
 900
 901         FIXME("(%p,%08lu,%lu,%p): stub\n",This,dwFlags,dwEffectsCount,pdwResultCodes);
 902
 903         if (pdwResultCodes)
 904                 for (u=0; u<dwEffectsCount; u++) pdwResultCodes[u] = DSFXR_UNKNOWN;
 905
 906         WARN("control unavailable\n");
 907         return DSERR_CONTROLUNAVAIL;
 908 }
 909
 910 static HRESULT WINAPI PrimaryBufferImpl_GetObjectInPath(
 911         LPDIRECTSOUNDBUFFER8 iface,REFGUID rguidObject,DWORD dwIndex,REFGUID rguidInterface,LPVOID* ppObject
 912 ) {
 913         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 914
 915         FIXME("(%p,%s,%lu,%s,%p): stub\n",This,debugstr_guid(rguidObject),dwIndex,debugstr_guid(rguidInterface),ppObject);
 916
 917         WARN("control unavailable\n");
 918         return DSERR_CONTROLUNAVAIL;
 919 }
 920
 921 static HRESULT WINAPI PrimaryBufferImpl_Initialize(
 922         LPDIRECTSOUNDBUFFER8 iface,LPDIRECTSOUND dsound,LPCDSBUFFERDESC dbsd
 923 ) {
 924         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 925         FIXME("(%p,%p,%p):stub\n",This,dsound,dbsd);
 926         DPRINTF("Re-Init!!!\n");
 927         WARN("already initialized\n");
 928         return DSERR_ALREADYINITIALIZED;
 929 }
 930
 931 static HRESULT WINAPI PrimaryBufferImpl_GetCaps(
 932         LPDIRECTSOUNDBUFFER8 iface,LPDSBCAPS caps
 933 ) {
 934         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 935         TRACE("(%p)->(%p)\n",This,caps);
 936
 937         if (caps == NULL) {
 938                 WARN("invalid parameter: caps == NULL\n");
 939                 return DSERR_INVALIDPARAM;
 940         }
 941
 942         if (caps->dwSize < sizeof(*caps)) {
 943                 WARN("invalid parameter: caps->dwSize = %ld: < %d\n", caps->dwSize, sizeof(*caps));
 944                 return DSERR_INVALIDPARAM;
 945         }
 946
 947         caps->dwFlags = This->dsound->dsbd.dwFlags;
 948         if (This->dsound->hwbuf) caps->dwFlags |= DSBCAPS_LOCHARDWARE;
 949         else caps->dwFlags |= DSBCAPS_LOCSOFTWARE;
 950
 951         caps->dwBufferBytes = This->dsound->buflen;
 952
 953         /* This value represents the speed of the "unlock" command.
 954            As unlock is quite fast (it does not do anything), I put
 955            4096 ko/s = 4 Mo / s */
 956         /* FIXME: hwbuf speed */
 957         caps->dwUnlockTransferRate = 4096;
 958         caps->dwPlayCpuOverhead = 0;
 959
 960         return DS_OK;
 961 }
 962
 963 static HRESULT WINAPI PrimaryBufferImpl_QueryInterface(
 964         LPDIRECTSOUNDBUFFER8 iface,REFIID riid,LPVOID *ppobj
 965 ) {
 966         PrimaryBufferImpl *This = (PrimaryBufferImpl *)iface;
 967         TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);
 968
 969         if (ppobj == NULL) {
 970                 WARN("invalid parameter\n");
 971                 return E_INVALIDARG;
 972         }
 973
 974         *ppobj = NULL;  /* assume failure */
 975
 976         if ( IsEqualGUID(riid, &IID_IUnknown) ||
 977              IsEqualGUID(riid, &IID_IDirectSoundBuffer) ) {
 978                 IDirectSoundBuffer_AddRef((LPDIRECTSOUNDBUFFER)This);
 979                 *ppobj = This;
 980                 return S_OK;
 981         }
 982
 983         /* DirectSoundBuffer and DirectSoundBuffer8 are different and */
 984         /* a primary buffer can't have a DirectSoundBuffer8 interface */
 985         if ( IsEqualGUID( &IID_IDirectSoundBuffer8, riid ) ) {
 986                 WARN("app requested DirectSoundBuffer8 on primary buffer\n");
 987                 return E_NOINTERFACE;
 988         }
 989
 990         if ( IsEqualGUID( &IID_IDirectSoundNotify, riid ) ) {
 991                 ERR("app requested IDirectSoundNotify on primary buffer\n");
 992                 /* FIXME: should we support this? */
 993                 return E_NOINTERFACE;
 994         }
 995
 996         if ( IsEqualGUID( &IID_IDirectSound3DBuffer, riid ) ) {
 997                 ERR("app requested IDirectSound3DBuffer on primary buffer\n");
 998                 return E_NOINTERFACE;
 999         }
1000
1001         if ( IsEqualGUID( &IID_IDirectSound3DListener, riid ) ) {
1002                 if (!This->dsound->listener)
1003                         IDirectSound3DListenerImpl_Create(This, &This->dsound->listener);
1004                 if (This->dsound->listener) {
1005                         *ppobj = This->dsound->listener;
1006                         IDirectSound3DListener_AddRef((LPDIRECTSOUND3DLISTENER)*ppobj);
1007                         return S_OK;
1008                 }
1009
1010                 WARN("IID_IDirectSound3DListener failed\n");
1011                 return E_NOINTERFACE;
1012         }
1013
1014         if ( IsEqualGUID( &IID_IKsPropertySet, riid ) ) {
1015                 FIXME("app requested IKsPropertySet on primary buffer\n");
1016                 return E_NOINTERFACE;
1017         }
1018
1019         FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );
1020         return E_NOINTERFACE;
1021 }
1022
1023 static IDirectSoundBuffer8Vtbl dspbvt =
1024 {
1025         PrimaryBufferImpl_QueryInterface,
1026         PrimaryBufferImpl_AddRef,
1027         PrimaryBufferImpl_Release,
1028         PrimaryBufferImpl_GetCaps,
1029         PrimaryBufferImpl_GetCurrentPosition,
1030         PrimaryBufferImpl_GetFormat,
1031         PrimaryBufferImpl_GetVolume,
1032         PrimaryBufferImpl_GetPan,
1033         PrimaryBufferImpl_GetFrequency,
1034         PrimaryBufferImpl_GetStatus,
1035         PrimaryBufferImpl_Initialize,
1036         PrimaryBufferImpl_Lock,
1037         PrimaryBufferImpl_Play,
1038         PrimaryBufferImpl_SetCurrentPosition,
1039         PrimaryBufferImpl_SetFormat,
1040         PrimaryBufferImpl_SetVolume,
1041         PrimaryBufferImpl_SetPan,
1042         PrimaryBufferImpl_SetFrequency,
1043         PrimaryBufferImpl_Stop,
1044         PrimaryBufferImpl_Unlock,
1045         PrimaryBufferImpl_Restore,
1046         PrimaryBufferImpl_SetFX,
1047         PrimaryBufferImpl_AcquireResources,
1048         PrimaryBufferImpl_GetObjectInPath
1049 };
1050
1051 HRESULT WINAPI PrimaryBufferImpl_Create(
1052         IDirectSoundImpl *ds,
1053         PrimaryBufferImpl **pdsb,
1054         LPCDSBUFFERDESC dsbd)
1055 {
1056         PrimaryBufferImpl *dsb;
1057
1058         TRACE("%p,%p,%p)\n",ds,pdsb,dsbd);
1059
1060         if (dsbd->lpwfxFormat) {
1061                 WARN("invalid parameter: dsbd->lpwfxFormat != NULL\n");
1062                 *pdsb = NULL;
1063                 return DSERR_INVALIDPARAM;
1064         }
1065
1066         dsb = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*dsb));
1067
1068         if (dsb == NULL) {
1069                 WARN("out of memory\n");
1070                 *pdsb = NULL;
1071                 return DSERR_OUTOFMEMORY;
1072         }
1073
1074         dsb->ref = 0;
1075         dsb->dsound = ds;
1076         dsb->lpVtbl = &dspbvt;
1077
1078         CopyMemory(&ds->dsbd, dsbd, sizeof(*dsbd));
1079
1080         TRACE("Created primary buffer at %p\n", dsb);
1081         TRACE("(formattag=0x%04x,chans=%d,samplerate=%ld,"
1082                 "bytespersec=%ld,blockalign=%d,bitspersamp=%d,cbSize=%d)\n",
1083                 ds->pwfx->wFormatTag, ds->pwfx->nChannels, ds->pwfx->nSamplesPerSec,
1084                 ds->pwfx->nAvgBytesPerSec, ds->pwfx->nBlockAlign,
1085                 ds->pwfx->wBitsPerSample, ds->pwfx->cbSize);
1086
1087         *pdsb = dsb;
1088         return S_OK;
1089 }