git.oblomov.eu Git - wine/blob - dlls/dsound/buffer.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 "config.h"
  23 #include <assert.h>
  24 #include <stdio.h>
  25 #include <sys/types.h>
  26 #include <sys/fcntl.h>
  27 #ifdef HAVE_UNISTD_H
  28 # include <unistd.h>
  29 #endif
  30 #include <stdlib.h>
  31 #include <string.h>
  32 #include <math.h>       /* Insomnia - pow() function */
  33
  34 #include "windef.h"
  35 #include "winbase.h"
  36 #include "wingdi.h"
  37 #include "winuser.h"
  38 #include "winerror.h"
  39 #include "mmsystem.h"
  40 #include "winternl.h"
  41 #include "mmddk.h"
  42 #include "wine/windef16.h"
  43 #include "wine/debug.h"
  44 #include "dsound.h"
  45 #include "dsdriver.h"
  46 #include "dsound_private.h"
  47
  48 WINE_DEFAULT_DEBUG_CHANNEL(dsound);
  49
  50 /*******************************************************************************
  51  *              IDirectSoundNotify
  52  */
  53 static HRESULT WINAPI IDirectSoundNotifyImpl_QueryInterface(
  54         LPDIRECTSOUNDNOTIFY iface,REFIID riid,LPVOID *ppobj
  55 ) {
  56         ICOM_THIS(IDirectSoundNotifyImpl,iface);
  57
  58         TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);
  59         if (This->dsb)
  60                 return IDirectSoundBuffer8_QueryInterface((LPDIRECTSOUNDBUFFER8)This->dsb, riid, ppobj);
  61         else if (This->dscb)
  62                 return IDirectSoundCaptureBuffer8_QueryInterface((LPDIRECTSOUNDCAPTUREBUFFER8)This->dscb, riid, ppobj);
  63         return DSERR_GENERIC;
  64 }
  65
  66 static ULONG WINAPI IDirectSoundNotifyImpl_AddRef(LPDIRECTSOUNDNOTIFY iface) {
  67         ICOM_THIS(IDirectSoundNotifyImpl,iface);
  68         DWORD ref;
  69
  70         TRACE("(%p) ref was %ld\n", This, This->ref);
  71
  72         ref = InterlockedIncrement(&(This->ref));
  73         return ref;
  74 }
  75
  76 static ULONG WINAPI IDirectSoundNotifyImpl_Release(LPDIRECTSOUNDNOTIFY iface) {
  77         ICOM_THIS(IDirectSoundNotifyImpl,iface);
  78         DWORD ref;
  79
  80         TRACE("(%p) ref was %ld\n", This, This->ref);
  81
  82         ref = InterlockedDecrement(&(This->ref));
  83         if (!ref) {
  84                 if (This->dsb)
  85                         IDirectSoundBuffer8_Release((LPDIRECTSOUNDBUFFER8)This->dsb);
  86                 else if (This->dscb)
  87                         IDirectSoundCaptureBuffer8_Release((LPDIRECTSOUNDCAPTUREBUFFER8)This->dscb);
  88                 HeapFree(GetProcessHeap(),0,This);
  89                 return 0;
  90         }
  91         return ref;
  92 }
  93
  94 static HRESULT WINAPI IDirectSoundNotifyImpl_SetNotificationPositions(
  95         LPDIRECTSOUNDNOTIFY iface,DWORD howmuch,LPCDSBPOSITIONNOTIFY notify
  96 ) {
  97         ICOM_THIS(IDirectSoundNotifyImpl,iface);
  98         int     i;
  99
 100         if (TRACE_ON(dsound)) {
 101             TRACE("(%p,0x%08lx,%p)\n",This,howmuch,notify);
 102             for (i=0;i<howmuch;i++)
 103                     TRACE("notify at %ld to 0x%08lx\n",
 104                             notify[i].dwOffset,(DWORD)notify[i].hEventNotify);
 105         }
 106         if (This->dsb) {
 107                 This->dsb->notifies = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,This->dsb->notifies,(This->dsb->nrofnotifies+howmuch)*sizeof(DSBPOSITIONNOTIFY));
 108                 memcpy( This->dsb->notifies+This->dsb->nrofnotifies,
 109                         notify,
 110                         howmuch*sizeof(DSBPOSITIONNOTIFY)
 111                 );
 112                 This->dsb->nrofnotifies+=howmuch;
 113         } else if (This->dscb) {
 114                 TRACE("notifies = %p, nrofnotifies = %d\n", This->dscb->notifies, This->dscb->nrofnotifies);
 115                 This->dscb->notifies = HeapReAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,This->dscb->notifies,(This->dscb->nrofnotifies+howmuch)*sizeof(DSBPOSITIONNOTIFY));
 116                 memcpy( This->dscb->notifies+This->dscb->nrofnotifies,
 117                         notify,
 118                         howmuch*sizeof(DSBPOSITIONNOTIFY)
 119                 );
 120                 This->dscb->nrofnotifies+=howmuch;
 121                 TRACE("notifies = %p, nrofnotifies = %d\n", This->dscb->notifies, This->dscb->nrofnotifies);
 122         }
 123         else
 124                 return DSERR_INVALIDPARAM;
 125
 126         return S_OK;
 127 }
 128
 129 ICOM_VTABLE(IDirectSoundNotify) dsnvt =
 130 {
 131         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 132         IDirectSoundNotifyImpl_QueryInterface,
 133         IDirectSoundNotifyImpl_AddRef,
 134         IDirectSoundNotifyImpl_Release,
 135         IDirectSoundNotifyImpl_SetNotificationPositions,
 136 };
 137
 138 /*******************************************************************************
 139  *              IDirectSoundBuffer
 140  */
 141
 142 static HRESULT WINAPI IDirectSoundBufferImpl_SetFormat(
 143         LPDIRECTSOUNDBUFFER8 iface,LPWAVEFORMATEX wfex
 144 ) {
 145         ICOM_THIS(IDirectSoundBufferImpl,iface);
 146
 147         TRACE("(%p,%p)\n",This,wfex);
 148         /* This method is not available on secondary buffers */
 149         return DSERR_INVALIDCALL;
 150 }
 151
 152 static HRESULT WINAPI IDirectSoundBufferImpl_SetVolume(
 153         LPDIRECTSOUNDBUFFER8 iface,LONG vol
 154 ) {
 155         ICOM_THIS(IDirectSoundBufferImpl,iface);
 156         LONG oldVol;
 157
 158         TRACE("(%p,%ld)\n",This,vol);
 159
 160         if (!(This->dsbd.dwFlags & DSBCAPS_CTRLVOLUME))
 161                 return DSERR_CONTROLUNAVAIL;
 162
 163         if ((vol > DSBVOLUME_MAX) || (vol < DSBVOLUME_MIN))
 164                 return DSERR_INVALIDPARAM;
 165
 166         /* **** */
 167         EnterCriticalSection(&(This->lock));
 168
 169         if (This->dsbd.dwFlags & DSBCAPS_CTRL3D) {
 170                 oldVol = This->ds3db->lVolume;
 171                 This->ds3db->lVolume = vol;
 172         } else {
 173                 oldVol = This->volpan.lVolume;
 174                 This->volpan.lVolume = vol;
 175                 if (vol != oldVol) DSOUND_RecalcVolPan(&(This->volpan));
 176         }
 177
 178         if (vol != oldVol) {
 179                 if (This->hwbuf) {
 180                         IDsDriverBuffer_SetVolumePan(This->hwbuf, &(This->volpan));
 181                 }
 182                 else DSOUND_ForceRemix(This);
 183         }
 184
 185         LeaveCriticalSection(&(This->lock));
 186         /* **** */
 187
 188         return DS_OK;
 189 }
 190
 191 static HRESULT WINAPI IDirectSoundBufferImpl_GetVolume(
 192         LPDIRECTSOUNDBUFFER8 iface,LPLONG vol
 193 ) {
 194         ICOM_THIS(IDirectSoundBufferImpl,iface);
 195         TRACE("(%p,%p)\n",This,vol);
 196
 197         if (vol == NULL)
 198                 return DSERR_INVALIDPARAM;
 199
 200         if (This->dsbd.dwFlags & DSBCAPS_CTRL3D)
 201                 *vol = This->ds3db->lVolume;
 202         else
 203                 *vol = This->volpan.lVolume;
 204         return DS_OK;
 205 }
 206
 207 static HRESULT WINAPI IDirectSoundBufferImpl_SetFrequency(
 208         LPDIRECTSOUNDBUFFER8 iface,DWORD freq
 209 ) {
 210         ICOM_THIS(IDirectSoundBufferImpl,iface);
 211         DWORD oldFreq;
 212
 213         TRACE("(%p,%ld)\n",This,freq);
 214
 215         if (!(This->dsbd.dwFlags & DSBCAPS_CTRLFREQUENCY))
 216                 return DSERR_CONTROLUNAVAIL;
 217
 218         if (freq == DSBFREQUENCY_ORIGINAL)
 219                 freq = This->wfx.nSamplesPerSec;
 220
 221         if ((freq < DSBFREQUENCY_MIN) || (freq > DSBFREQUENCY_MAX))
 222                 return DSERR_INVALIDPARAM;
 223
 224         /* **** */
 225         EnterCriticalSection(&(This->lock));
 226
 227         oldFreq = This->freq;
 228         This->freq = freq;
 229         if (freq != oldFreq) {
 230                 This->freqAdjust = (freq << DSOUND_FREQSHIFT) / This->dsound->wfx.nSamplesPerSec;
 231                 This->nAvgBytesPerSec = freq * This->wfx.nBlockAlign;
 232                 DSOUND_RecalcFormat(This);
 233                 if (!This->hwbuf) DSOUND_ForceRemix(This);
 234         }
 235
 236         LeaveCriticalSection(&(This->lock));
 237         /* **** */
 238
 239         return DS_OK;
 240 }
 241
 242 static HRESULT WINAPI IDirectSoundBufferImpl_Play(
 243         LPDIRECTSOUNDBUFFER8 iface,DWORD reserved1,DWORD reserved2,DWORD flags
 244 ) {
 245         ICOM_THIS(IDirectSoundBufferImpl,iface);
 246         TRACE("(%p,%08lx,%08lx,%08lx)\n",
 247                 This,reserved1,reserved2,flags
 248         );
 249
 250         /* **** */
 251         EnterCriticalSection(&(This->lock));
 252
 253         This->playflags = flags;
 254         if (This->state == STATE_STOPPED) {
 255                 This->leadin = TRUE;
 256                 This->startpos = This->buf_mixpos;
 257                 This->state = STATE_STARTING;
 258         } else if (This->state == STATE_STOPPING)
 259                 This->state = STATE_PLAYING;
 260         if (This->hwbuf) {
 261                 IDsDriverBuffer_Play(This->hwbuf, 0, 0, This->playflags);
 262                 This->state = STATE_PLAYING;
 263         }
 264
 265         LeaveCriticalSection(&(This->lock));
 266         /* **** */
 267
 268         return DS_OK;
 269 }
 270
 271 static HRESULT WINAPI IDirectSoundBufferImpl_Stop(LPDIRECTSOUNDBUFFER8 iface)
 272 {
 273         ICOM_THIS(IDirectSoundBufferImpl,iface);
 274         TRACE("(%p)\n",This);
 275
 276         /* **** */
 277         EnterCriticalSection(&(This->lock));
 278
 279         if (This->state == STATE_PLAYING)
 280                 This->state = STATE_STOPPING;
 281         else if (This->state == STATE_STARTING)
 282                 This->state = STATE_STOPPED;
 283         if (This->hwbuf) {
 284                 IDsDriverBuffer_Stop(This->hwbuf);
 285                 This->state = STATE_STOPPED;
 286         }
 287         DSOUND_CheckEvent(This, 0);
 288
 289         LeaveCriticalSection(&(This->lock));
 290         /* **** */
 291
 292         return DS_OK;
 293 }
 294
 295 static DWORD WINAPI IDirectSoundBufferImpl_AddRef(LPDIRECTSOUNDBUFFER8 iface) {
 296         ICOM_THIS(IDirectSoundBufferImpl,iface);
 297         DWORD ref;
 298
 299         TRACE("(%p) ref was %ld, thread is %04lx\n",This, This->ref, GetCurrentThreadId());
 300
 301         ref = InterlockedIncrement(&(This->ref));
 302         if (!ref) {
 303                 FIXME("thread-safety alert! AddRef-ing with a zero refcount!\n");
 304         }
 305         return ref;
 306 }
 307 static DWORD WINAPI IDirectSoundBufferImpl_Release(LPDIRECTSOUNDBUFFER8 iface) {
 308         ICOM_THIS(IDirectSoundBufferImpl,iface);
 309         int     i;
 310         DWORD ref;
 311
 312         TRACE("(%p) ref was %ld, thread is %04lx\n",This, This->ref, GetCurrentThreadId());
 313
 314         ref = InterlockedDecrement(&(This->ref));
 315         if (ref) return ref;
 316
 317         RtlAcquireResourceExclusive(&(This->dsound->lock), TRUE);
 318         for (i=0;i<This->dsound->nrofbuffers;i++)
 319                 if (This->dsound->buffers[i] == This)
 320                         break;
 321
 322         if (i < This->dsound->nrofbuffers) {
 323                 /* Put the last buffer of the list in the (now empty) position */
 324                 This->dsound->buffers[i] = This->dsound->buffers[This->dsound->nrofbuffers - 1];
 325                 This->dsound->nrofbuffers--;
 326                 This->dsound->buffers = HeapReAlloc(GetProcessHeap(),0,This->dsound->buffers,sizeof(LPDIRECTSOUNDBUFFER8)*This->dsound->nrofbuffers);
 327                 TRACE("buffer count is now %d\n", This->dsound->nrofbuffers);
 328                 IDirectSound_Release((LPDIRECTSOUND)This->dsound);
 329         }
 330         RtlReleaseResource(&(This->dsound->lock));
 331
 332         DeleteCriticalSection(&(This->lock));
 333         if (This->hwbuf) {
 334                 IDsDriverBuffer_Release(This->hwbuf);
 335                 if (This->dsound->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY)
 336                         HeapFree(GetProcessHeap(),0,This->buffer);
 337         }
 338         else if (!This->parent)
 339                 HeapFree(GetProcessHeap(),0,This->buffer);
 340         if (This->ds3db) {
 341                 DeleteCriticalSection(&This->ds3db->lock);
 342                 HeapFree(GetProcessHeap(), 0, This->ds3db);
 343         }
 344         if (This->iks) {
 345                 HeapFree(GetProcessHeap(), 0, This->iks);
 346         }
 347         if (This->parent)
 348                 IDirectSoundBuffer8_Release((LPDIRECTSOUNDBUFFER8)This->parent);
 349
 350         HeapFree(GetProcessHeap(),0,This);
 351
 352         return 0;
 353 }
 354
 355 DWORD DSOUND_CalcPlayPosition(IDirectSoundBufferImpl *This,
 356                               DWORD state, DWORD pplay, DWORD pwrite, DWORD pmix, DWORD bmix)
 357 {
 358         DWORD bplay;
 359
 360         TRACE("primary playpos=%ld, mixpos=%ld\n", pplay, pmix);
 361         TRACE("this mixpos=%ld, time=%ld\n", bmix, GetTickCount());
 362
 363         /* the actual primary play position (pplay) is always behind last mixed (pmix),
 364          * unless the computer is too slow or something */
 365         /* we need to know how far away we are from there */
 366 #if 0 /* we'll never fill the primary entirely */
 367         if (pmix == pplay) {
 368                 if ((state == STATE_PLAYING) || (state == STATE_STOPPING)) {
 369                         /* wow, the software mixer is really doing well,
 370                          * seems the entire primary buffer is filled! */
 371                         pmix += This->dsound->buflen;
 372                 }
 373                 /* else: the primary buffer is not playing, so probably empty */
 374         }
 375 #endif
 376         if (pmix < pplay) pmix += This->dsound->buflen; /* wraparound */
 377         pmix -= pplay;
 378         /* detect buffer underrun */
 379         if (pwrite < pplay) pwrite += This->dsound->buflen; /* wraparound */
 380         pwrite -= pplay;
 381         if (pmix > (ds_snd_queue_max * This->dsound->fraglen + pwrite + This->dsound->writelead)) {
 382                 WARN("detected an underrun: primary queue was %ld\n",pmix);
 383                 pmix = 0;
 384         }
 385         /* divide the offset by its sample size */
 386         pmix /= This->dsound->wfx.nBlockAlign;
 387         TRACE("primary back-samples=%ld\n",pmix);
 388         /* adjust for our frequency */
 389         pmix = (pmix * This->freqAdjust) >> DSOUND_FREQSHIFT;
 390         /* multiply by our own sample size */
 391         pmix *= This->wfx.nBlockAlign;
 392         TRACE("this back-offset=%ld\n", pmix);
 393         /* subtract from our last mixed position */
 394         bplay = bmix;
 395         while (bplay < pmix) bplay += This->buflen; /* wraparound */
 396         bplay -= pmix;
 397         if (This->leadin && ((bplay < This->startpos) || (bplay > bmix))) {
 398                 /* seems we haven't started playing yet */
 399                 TRACE("this still in lead-in phase\n");
 400                 bplay = This->startpos;
 401         }
 402         /* return the result */
 403         return bplay;
 404 }
 405
 406 static HRESULT WINAPI IDirectSoundBufferImpl_GetCurrentPosition(
 407         LPDIRECTSOUNDBUFFER8 iface,LPDWORD playpos,LPDWORD writepos
 408 ) {
 409         HRESULT hres;
 410         ICOM_THIS(IDirectSoundBufferImpl,iface);
 411         TRACE("(%p,%p,%p)\n",This,playpos,writepos);
 412         if (This->hwbuf) {
 413                 hres=IDsDriverBuffer_GetPosition(This->hwbuf,playpos,writepos);
 414                 if (hres)
 415                     return hres;
 416         }
 417         else {
 418                 if (playpos && (This->state != STATE_PLAYING)) {
 419                         /* we haven't been merged into the primary buffer (yet) */
 420                         *playpos = This->buf_mixpos;
 421                 }
 422                 else if (playpos) {
 423                         DWORD pplay, pwrite, lplay, splay, pstate;
 424                         /* let's get this exact; first, recursively call GetPosition on the primary */
 425                         EnterCriticalSection(&(This->dsound->mixlock));
 426                         DSOUND_PrimaryGetPosition(This->dsound, &pplay, &pwrite);
 427                         /* detect HEL mode underrun */
 428                         pstate = This->dsound->state;
 429                         if (!(This->dsound->hwbuf || This->dsound->pwqueue)) {
 430                                 TRACE("detected an underrun\n");
 431                                 /* pplay = ? */
 432                                 if (pstate == STATE_PLAYING)
 433                                         pstate = STATE_STARTING;
 434                                 else if (pstate == STATE_STOPPING)
 435                                         pstate = STATE_STOPPED;
 436                         }
 437                         /* get data for ourselves while we still have the lock */
 438                         pstate &= This->state;
 439                         lplay = This->primary_mixpos;
 440                         splay = This->buf_mixpos;
 441                         if ((This->dsbd.dwFlags & DSBCAPS_GETCURRENTPOSITION2) || This->dsound->hwbuf) {
 442                                 /* calculate play position using this */
 443                                 *playpos = DSOUND_CalcPlayPosition(This, pstate, pplay, pwrite, lplay, splay);
 444                         } else {
 445                                 /* (unless the app isn't using GETCURRENTPOSITION2) */
 446                                 /* don't know exactly how this should be handled...
 447                                  * the docs says that play cursor is reported as directly
 448                                  * behind write cursor, hmm... */
 449                                 /* let's just do what might work for Half-Life */
 450                                 DWORD wp;
 451                                 wp = (This->dsound->pwplay + ds_hel_margin) * This->dsound->fraglen;
 452                                 while (wp >= This->dsound->buflen)
 453                                         wp -= This->dsound->buflen;
 454                                 *playpos = DSOUND_CalcPlayPosition(This, pstate, wp, pwrite, lplay, splay);
 455                         }
 456                         LeaveCriticalSection(&(This->dsound->mixlock));
 457                 }
 458                 if (writepos) *writepos = This->buf_mixpos;
 459         }
 460         if (writepos) {
 461                 if (This->state != STATE_STOPPED)
 462                         /* apply the documented 10ms lead to writepos */
 463                         *writepos += This->writelead;
 464                 while (*writepos >= This->buflen) *writepos -= This->buflen;
 465         }
 466         if (playpos) This->last_playpos = *playpos;
 467         TRACE("playpos = %ld, writepos = %ld (%p, time=%ld)\n", playpos?*playpos:0, writepos?*writepos:0, This, GetTickCount());
 468         return DS_OK;
 469 }
 470
 471 static HRESULT WINAPI IDirectSoundBufferImpl_GetStatus(
 472         LPDIRECTSOUNDBUFFER8 iface,LPDWORD status
 473 ) {
 474         ICOM_THIS(IDirectSoundBufferImpl,iface);
 475         TRACE("(%p,%p), thread is %04lx\n",This,status,GetCurrentThreadId());
 476
 477         if (status == NULL)
 478                 return DSERR_INVALIDPARAM;
 479
 480         *status = 0;
 481         if ((This->state == STATE_STARTING) || (This->state == STATE_PLAYING)) {
 482                 *status |= DSBSTATUS_PLAYING;
 483                 if (This->playflags & DSBPLAY_LOOPING)
 484                         *status |= DSBSTATUS_LOOPING;
 485         }
 486
 487         TRACE("status=%lx\n", *status);
 488         return DS_OK;
 489 }
 490
 491
 492 static HRESULT WINAPI IDirectSoundBufferImpl_GetFormat(
 493         LPDIRECTSOUNDBUFFER8 iface,LPWAVEFORMATEX lpwf,DWORD wfsize,LPDWORD wfwritten
 494 ) {
 495         ICOM_THIS(IDirectSoundBufferImpl,iface);
 496         TRACE("(%p,%p,%ld,%p)\n",This,lpwf,wfsize,wfwritten);
 497
 498         if (wfsize>sizeof(This->wfx))
 499                 wfsize = sizeof(This->wfx);
 500         if (lpwf) {     /* NULL is valid */
 501                 memcpy(lpwf,&(This->wfx),wfsize);
 502                 if (wfwritten)
 503                         *wfwritten = wfsize;
 504         } else
 505                 if (wfwritten)
 506                         *wfwritten = sizeof(This->wfx);
 507                 else
 508                         return DSERR_INVALIDPARAM;
 509
 510         return DS_OK;
 511 }
 512
 513 static HRESULT WINAPI IDirectSoundBufferImpl_Lock(
 514         LPDIRECTSOUNDBUFFER8 iface,DWORD writecursor,DWORD writebytes,LPVOID lplpaudioptr1,LPDWORD audiobytes1,LPVOID lplpaudioptr2,LPDWORD audiobytes2,DWORD flags
 515 ) {
 516         ICOM_THIS(IDirectSoundBufferImpl,iface);
 517
 518         TRACE("(%p,%ld,%ld,%p,%p,%p,%p,0x%08lx) at %ld\n",
 519                 This,
 520                 writecursor,
 521                 writebytes,
 522                 lplpaudioptr1,
 523                 audiobytes1,
 524                 lplpaudioptr2,
 525                 audiobytes2,
 526                 flags,
 527                 GetTickCount()
 528         );
 529
 530         if (flags & DSBLOCK_FROMWRITECURSOR) {
 531                 DWORD writepos;
 532                 /* GetCurrentPosition does too much magic to duplicate here */
 533                 IDirectSoundBufferImpl_GetCurrentPosition(iface, NULL, &writepos);
 534                 writecursor += writepos;
 535         }
 536         while (writecursor >= This->buflen)
 537                 writecursor -= This->buflen;
 538         if (flags & DSBLOCK_ENTIREBUFFER)
 539                 writebytes = This->buflen;
 540         if (writebytes > This->buflen)
 541                 writebytes = This->buflen;
 542
 543         assert(audiobytes1!=audiobytes2);
 544         assert(lplpaudioptr1!=lplpaudioptr2);
 545
 546         EnterCriticalSection(&(This->lock));
 547
 548         if ((writebytes == This->buflen) &&
 549             ((This->state == STATE_STARTING) ||
 550              (This->state == STATE_PLAYING)))
 551                 /* some games, like Half-Life, try to be clever (not) and
 552                  * keep one secondary buffer, and mix sounds into it itself,
 553                  * locking the entire buffer every time... so we can just forget
 554                  * about tracking the last-written-to-position... */
 555                 This->probably_valid_to = (DWORD)-1;
 556         else
 557                 This->probably_valid_to = writecursor;
 558
 559         if (!(This->dsound->drvdesc.dwFlags & DSDDESC_DONTNEEDSECONDARYLOCK) && This->hwbuf) {
 560                 IDsDriverBuffer_Lock(This->hwbuf,
 561                                      lplpaudioptr1, audiobytes1,
 562                                      lplpaudioptr2, audiobytes2,
 563                                      writecursor, writebytes,
 564                                      0);
 565         }
 566         else {
 567                 BOOL remix = FALSE;
 568                 if (writecursor+writebytes <= This->buflen) {
 569                         *(LPBYTE*)lplpaudioptr1 = This->buffer+writecursor;
 570                         *audiobytes1 = writebytes;
 571                         if (lplpaudioptr2)
 572                                 *(LPBYTE*)lplpaudioptr2 = NULL;
 573                         if (audiobytes2)
 574                                 *audiobytes2 = 0;
 575                         TRACE("->%ld.0\n",writebytes);
 576                 } else {
 577                         *(LPBYTE*)lplpaudioptr1 = This->buffer+writecursor;
 578                         *audiobytes1 = This->buflen-writecursor;
 579                         if (lplpaudioptr2)
 580                                 *(LPBYTE*)lplpaudioptr2 = This->buffer;
 581                         if (audiobytes2)
 582                                 *audiobytes2 = writebytes-(This->buflen-writecursor);
 583                         TRACE("->%ld.%ld\n",*audiobytes1,audiobytes2?*audiobytes2:0);
 584                 }
 585                 if (This->state == STATE_PLAYING) {
 586                         /* if the segment between playpos and buf_mixpos is touched,
 587                          * we need to cancel some mixing */
 588                         /* we'll assume that the app always calls GetCurrentPosition before
 589                          * locking a playing buffer, so that last_playpos is up-to-date */
 590                         if (This->buf_mixpos >= This->last_playpos) {
 591                                 if (This->buf_mixpos > writecursor &&
 592                                     This->last_playpos < writecursor+writebytes)
 593                                         remix = TRUE;
 594                         }
 595                         else {
 596                                 if (This->buf_mixpos > writecursor ||
 597                                     This->last_playpos < writecursor+writebytes)
 598                                         remix = TRUE;
 599                         }
 600                         if (remix) {
 601                                 TRACE("locking prebuffered region, ouch\n");
 602                                 DSOUND_MixCancelAt(This, writecursor);
 603                         }
 604                 }
 605         }
 606
 607         LeaveCriticalSection(&(This->lock));
 608         return DS_OK;
 609 }
 610
 611 static HRESULT WINAPI IDirectSoundBufferImpl_SetCurrentPosition(
 612         LPDIRECTSOUNDBUFFER8 iface,DWORD newpos
 613 ) {
 614         ICOM_THIS(IDirectSoundBufferImpl,iface);
 615         TRACE("(%p,%ld)\n",This,newpos);
 616
 617         /* **** */
 618         EnterCriticalSection(&(This->lock));
 619
 620         while (newpos >= This->buflen)
 621                 newpos -= This->buflen;
 622         This->buf_mixpos = newpos;
 623         if (This->hwbuf)
 624                 IDsDriverBuffer_SetPosition(This->hwbuf, This->buf_mixpos);
 625
 626         LeaveCriticalSection(&(This->lock));
 627         /* **** */
 628
 629         return DS_OK;
 630 }
 631
 632 static HRESULT WINAPI IDirectSoundBufferImpl_SetPan(
 633         LPDIRECTSOUNDBUFFER8 iface,LONG pan
 634 ) {
 635         ICOM_THIS(IDirectSoundBufferImpl,iface);
 636         LONG oldPan;
 637
 638         TRACE("(%p,%ld)\n",This,pan);
 639
 640         if ((pan > DSBPAN_RIGHT) || (pan < DSBPAN_LEFT))
 641                 return DSERR_INVALIDPARAM;
 642
 643         /* You cannot use both pan and 3D controls */
 644         if (!(This->dsbd.dwFlags & DSBCAPS_CTRLPAN) ||
 645             (This->dsbd.dwFlags & DSBCAPS_CTRL3D))
 646                 return DSERR_CONTROLUNAVAIL;
 647
 648         /* **** */
 649         EnterCriticalSection(&(This->lock));
 650
 651         oldPan = This->volpan.lPan;
 652         This->volpan.lPan = pan;
 653
 654         if (pan != oldPan) {
 655                 DSOUND_RecalcVolPan(&(This->volpan));
 656
 657                 if (This->hwbuf) {
 658                         IDsDriverBuffer_SetVolumePan(This->hwbuf, &(This->volpan));
 659                 }
 660                 else DSOUND_ForceRemix(This);
 661         }
 662
 663         LeaveCriticalSection(&(This->lock));
 664         /* **** */
 665
 666         return DS_OK;
 667 }
 668
 669 static HRESULT WINAPI IDirectSoundBufferImpl_GetPan(
 670         LPDIRECTSOUNDBUFFER8 iface,LPLONG pan
 671 ) {
 672         ICOM_THIS(IDirectSoundBufferImpl,iface);
 673         TRACE("(%p,%p)\n",This,pan);
 674
 675         if (pan == NULL)
 676                 return DSERR_INVALIDPARAM;
 677
 678         *pan = This->volpan.lPan;
 679
 680         return DS_OK;
 681 }
 682
 683 static HRESULT WINAPI IDirectSoundBufferImpl_Unlock(
 684         LPDIRECTSOUNDBUFFER8 iface,LPVOID p1,DWORD x1,LPVOID p2,DWORD x2
 685 ) {
 686         ICOM_THIS(IDirectSoundBufferImpl,iface);
 687         DWORD probably_valid_to;
 688
 689         TRACE("(%p,%p,%ld,%p,%ld)\n", This,p1,x1,p2,x2);
 690
 691 #if 0
 692         /* Preprocess 3D buffers... */
 693
 694         /* This is highly experimental and liable to break things */
 695         if (This->dsbd.dwFlags & DSBCAPS_CTRL3D)
 696                 DSOUND_Create3DBuffer(This);
 697 #endif
 698
 699         if (!(This->dsound->drvdesc.dwFlags & DSDDESC_DONTNEEDSECONDARYLOCK) && This->hwbuf) {
 700                 IDsDriverBuffer_Unlock(This->hwbuf, p1, x1, p2, x2);
 701         }
 702
 703         if (p2) probably_valid_to = (((LPBYTE)p2)-This->buffer) + x2;
 704         else probably_valid_to = (((LPBYTE)p1)-This->buffer) + x1;
 705         while (probably_valid_to >= This->buflen)
 706                 probably_valid_to -= This->buflen;
 707         if ((probably_valid_to == 0) && ((x1+x2) == This->buflen) &&
 708             ((This->state == STATE_STARTING) ||
 709              (This->state == STATE_PLAYING)))
 710                 /* see IDirectSoundBufferImpl_Lock */
 711                 probably_valid_to = (DWORD)-1;
 712         This->probably_valid_to = probably_valid_to;
 713
 714         return DS_OK;
 715 }
 716
 717 static HRESULT WINAPI IDirectSoundBufferImpl_Restore(
 718         LPDIRECTSOUNDBUFFER8 iface
 719 ) {
 720         ICOM_THIS(IDirectSoundBufferImpl,iface);
 721         FIXME("(%p):stub\n",This);
 722         return DS_OK;
 723 }
 724
 725 static HRESULT WINAPI IDirectSoundBufferImpl_GetFrequency(
 726         LPDIRECTSOUNDBUFFER8 iface,LPDWORD freq
 727 ) {
 728         ICOM_THIS(IDirectSoundBufferImpl,iface);
 729         TRACE("(%p,%p)\n",This,freq);
 730
 731         if (freq == NULL)
 732                 return DSERR_INVALIDPARAM;
 733
 734         *freq = This->freq;
 735         TRACE("-> %ld\n", *freq);
 736
 737         return DS_OK;
 738 }
 739
 740 static HRESULT WINAPI IDirectSoundBufferImpl_SetFX(
 741         LPDIRECTSOUNDBUFFER8 iface,DWORD dwEffectsCount,LPDSEFFECTDESC pDSFXDesc,LPDWORD pdwResultCodes
 742 ) {
 743         ICOM_THIS(IDirectSoundBufferImpl,iface);
 744         DWORD u;
 745
 746         FIXME("(%p,%lu,%p,%p): stub\n",This,dwEffectsCount,pDSFXDesc,pdwResultCodes);
 747
 748         if (pdwResultCodes)
 749                 for (u=0; u<dwEffectsCount; u++) pdwResultCodes[u] = DSFXR_UNKNOWN;
 750
 751         return DSERR_CONTROLUNAVAIL;
 752 }
 753
 754 static HRESULT WINAPI IDirectSoundBufferImpl_AcquireResources(
 755         LPDIRECTSOUNDBUFFER8 iface,DWORD dwFlags,DWORD dwEffectsCount,LPDWORD pdwResultCodes
 756 ) {
 757         ICOM_THIS(IDirectSoundBufferImpl,iface);
 758         DWORD u;
 759
 760         FIXME("(%p,%08lu,%lu,%p): stub\n",This,dwFlags,dwEffectsCount,pdwResultCodes);
 761
 762         if (pdwResultCodes)
 763                 for (u=0; u<dwEffectsCount; u++) pdwResultCodes[u] = DSFXR_UNKNOWN;
 764
 765         return DSERR_CONTROLUNAVAIL;
 766 }
 767
 768 static HRESULT WINAPI IDirectSoundBufferImpl_GetObjectInPath(
 769         LPDIRECTSOUNDBUFFER8 iface,REFGUID rguidObject,DWORD dwIndex,REFGUID rguidInterface,LPVOID* ppObject
 770 ) {
 771         ICOM_THIS(IDirectSoundBufferImpl,iface);
 772
 773         FIXME("(%p,%s,%lu,%s,%p): stub\n",This,debugstr_guid(rguidObject),dwIndex,debugstr_guid(rguidInterface),ppObject);
 774
 775         return DSERR_CONTROLUNAVAIL;
 776 }
 777
 778 static HRESULT WINAPI IDirectSoundBufferImpl_Initialize(
 779         LPDIRECTSOUNDBUFFER8 iface,LPDIRECTSOUND8 dsound,LPDSBUFFERDESC dbsd
 780 ) {
 781         ICOM_THIS(IDirectSoundBufferImpl,iface);
 782         FIXME("(%p,%p,%p):stub\n",This,dsound,dbsd);
 783         DPRINTF("Re-Init!!!\n");
 784         return DSERR_ALREADYINITIALIZED;
 785 }
 786
 787 static HRESULT WINAPI IDirectSoundBufferImpl_GetCaps(
 788         LPDIRECTSOUNDBUFFER8 iface,LPDSBCAPS caps
 789 ) {
 790         ICOM_THIS(IDirectSoundBufferImpl,iface);
 791         TRACE("(%p)->(%p)\n",This,caps);
 792
 793         if (caps == NULL || caps->dwSize!=sizeof(*caps))
 794                 return DSERR_INVALIDPARAM;
 795
 796         caps->dwFlags = This->dsbd.dwFlags;
 797         if (This->hwbuf) caps->dwFlags |= DSBCAPS_LOCHARDWARE;
 798         else caps->dwFlags |= DSBCAPS_LOCSOFTWARE;
 799
 800         caps->dwBufferBytes = This->buflen;
 801
 802         /* This value represents the speed of the "unlock" command.
 803            As unlock is quite fast (it does not do anything), I put
 804            4096 ko/s = 4 Mo / s */
 805         /* FIXME: hwbuf speed */
 806         caps->dwUnlockTransferRate = 4096;
 807         caps->dwPlayCpuOverhead = 0;
 808
 809         return DS_OK;
 810 }
 811
 812 static HRESULT WINAPI IDirectSoundBufferImpl_QueryInterface(
 813         LPDIRECTSOUNDBUFFER8 iface,REFIID riid,LPVOID *ppobj
 814 ) {
 815         ICOM_THIS(IDirectSoundBufferImpl,iface);
 816
 817         TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);
 818
 819         if ( IsEqualGUID( &IID_IDirectSoundNotify, riid ) ) {
 820                 IDirectSoundNotifyImpl  *dsn;
 821
 822                 dsn = (IDirectSoundNotifyImpl*)HeapAlloc(GetProcessHeap(),0,sizeof(*dsn));
 823                 dsn->ref = 1;
 824                 dsn->dsb = This;
 825                 dsn->dscb = 0;
 826                 IDirectSoundBuffer8_AddRef(iface);
 827                 dsn->lpVtbl = &dsnvt;
 828                 *ppobj = (LPVOID)dsn;
 829                 return S_OK;
 830         }
 831
 832         if ( IsEqualGUID( &IID_IDirectSound3DBuffer, riid ) ) {
 833                 if (!This->ds3db)
 834                         IDirectSound3DBufferImpl_Create(This, &This->ds3db);
 835                 *ppobj = This->ds3db;
 836                 if (*ppobj) {
 837                         IDirectSound3DBuffer_AddRef((LPDIRECTSOUND3DBUFFER)*ppobj);
 838                         return S_OK;
 839                 }
 840                 return E_FAIL;
 841         }
 842
 843         if ( IsEqualGUID( &IID_IDirectSound3DListener, riid ) ) {
 844                 ERR("app requested IDirectSound3DListener on secondary buffer\n");
 845                 *ppobj = NULL;
 846                 return E_FAIL;
 847         }
 848
 849         if ( IsEqualGUID( &IID_IKsPropertySet, riid ) ) {
 850                 if (!This->iks)
 851                         IKsPropertySetImpl_Create(This, &This->iks);
 852                 *ppobj = This->iks;
 853                 if (*ppobj) {
 854                         IKsPropertySet_AddRef((LPKSPROPERTYSET)*ppobj);
 855                         return S_OK;
 856                 }
 857                 return E_FAIL;
 858         }
 859
 860         if ( IsEqualGUID( &IID_IDirectSoundBuffer8, riid ) ) {
 861             IDirectSoundBuffer8_AddRef(iface);
 862             *ppobj = This;
 863             return NO_ERROR;
 864         }
 865
 866         FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );
 867
 868         *ppobj = NULL;
 869
 870         return E_NOINTERFACE;
 871 }
 872
 873 static ICOM_VTABLE(IDirectSoundBuffer8) dsbvt =
 874 {
 875         ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 876         IDirectSoundBufferImpl_QueryInterface,
 877         IDirectSoundBufferImpl_AddRef,
 878         IDirectSoundBufferImpl_Release,
 879         IDirectSoundBufferImpl_GetCaps,
 880         IDirectSoundBufferImpl_GetCurrentPosition,
 881         IDirectSoundBufferImpl_GetFormat,
 882         IDirectSoundBufferImpl_GetVolume,
 883         IDirectSoundBufferImpl_GetPan,
 884         IDirectSoundBufferImpl_GetFrequency,
 885         IDirectSoundBufferImpl_GetStatus,
 886         IDirectSoundBufferImpl_Initialize,
 887         IDirectSoundBufferImpl_Lock,
 888         IDirectSoundBufferImpl_Play,
 889         IDirectSoundBufferImpl_SetCurrentPosition,
 890         IDirectSoundBufferImpl_SetFormat,
 891         IDirectSoundBufferImpl_SetVolume,
 892         IDirectSoundBufferImpl_SetPan,
 893         IDirectSoundBufferImpl_SetFrequency,
 894         IDirectSoundBufferImpl_Stop,
 895         IDirectSoundBufferImpl_Unlock,
 896         IDirectSoundBufferImpl_Restore,
 897         IDirectSoundBufferImpl_SetFX,
 898         IDirectSoundBufferImpl_AcquireResources,
 899         IDirectSoundBufferImpl_GetObjectInPath
 900 };
 901
 902 HRESULT WINAPI SecondaryBuffer_Create(
 903         IDirectSoundImpl *This,
 904         IDirectSoundBufferImpl **pdsb,
 905         LPDSBUFFERDESC dsbd)
 906 {
 907         IDirectSoundBufferImpl *dsb;
 908         LPWAVEFORMATEX wfex = dsbd->lpwfxFormat;
 909         HRESULT err = DS_OK;
 910         DWORD capf = 0;
 911         int use_hw;
 912
 913         if (dsbd->dwBufferBytes < DSBSIZE_MIN || dsbd->dwBufferBytes > DSBSIZE_MAX) {
 914                 ERR("invalid sound buffer size %ld\n", dsbd->dwBufferBytes);
 915                 return DSERR_INVALIDPARAM; /* FIXME: which error? */
 916         }
 917
 918         dsb = (IDirectSoundBufferImpl*)HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*dsb));
 919         dsb->ref = 1;
 920         dsb->dsound = This;
 921         dsb->parent = NULL;
 922         dsb->lpVtbl = &dsbvt;
 923
 924         memcpy(&dsb->dsbd, dsbd, sizeof(*dsbd));
 925         if (wfex)
 926                 memcpy(&dsb->wfx, wfex, sizeof(dsb->wfx));
 927
 928         TRACE("Created buffer at %p\n", dsb);
 929
 930         dsb->buflen = dsbd->dwBufferBytes;
 931         dsb->freq = dsbd->lpwfxFormat->nSamplesPerSec;
 932
 933         /* Check necessary hardware mixing capabilities */
 934         if (wfex->nChannels==2) capf |= DSCAPS_SECONDARYSTEREO;
 935         else capf |= DSCAPS_SECONDARYMONO;
 936         if (wfex->wBitsPerSample==16) capf |= DSCAPS_SECONDARY16BIT;
 937         else capf |= DSCAPS_SECONDARY8BIT;
 938         use_hw = (This->drvcaps.dwFlags & capf) == capf;
 939
 940         /* FIXME: check hardware sample rate mixing capabilities */
 941         /* FIXME: check app hints for software/hardware buffer (STATIC, LOCHARDWARE, etc) */
 942         /* FIXME: check whether any hardware buffers are left */
 943         /* FIXME: handle DSDHEAP_CREATEHEAP for hardware buffers */
 944
 945         /* Allocate system memory if applicable */
 946         if ((This->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) || !use_hw) {
 947                 dsb->buffer = (LPBYTE)HeapAlloc(GetProcessHeap(),0,dsb->buflen);
 948                 if (dsb->buffer == NULL)
 949                         err = DSERR_OUTOFMEMORY;
 950         }
 951
 952         /* Allocate the hardware buffer */
 953         if (use_hw && (err == DS_OK)) {
 954                 err = IDsDriver_CreateSoundBuffer(This->driver,wfex,dsbd->dwFlags,0,
 955                                                   &(dsb->buflen),&(dsb->buffer),
 956                                                   (LPVOID*)&(dsb->hwbuf));
 957         }
 958
 959         if (err != DS_OK) {
 960                 if (dsb->buffer)
 961                         HeapFree(GetProcessHeap(),0,dsb->buffer);
 962                 HeapFree(GetProcessHeap(),0,dsb);
 963                 dsb = NULL;
 964                 return err;
 965         }
 966         /* calculate fragment size and write lead */
 967         DSOUND_RecalcFormat(dsb);
 968
 969         /* It's not necessary to initialize values to zero since */
 970         /* we allocated this structure with HEAP_ZERO_MEMORY... */
 971         dsb->playpos = 0;
 972         dsb->buf_mixpos = 0;
 973         dsb->state = STATE_STOPPED;
 974
 975         dsb->freqAdjust = (dsb->freq << DSOUND_FREQSHIFT) /
 976                 This->wfx.nSamplesPerSec;
 977         dsb->nAvgBytesPerSec = dsb->freq *
 978                 dsbd->lpwfxFormat->nBlockAlign;
 979
 980         if (dsbd->dwFlags & DSBCAPS_CTRL3D) {
 981                 IDirectSound3DBufferImpl_Create(dsb, &dsb->ds3db);
 982         }
 983         else
 984                 DSOUND_RecalcVolPan(&(dsb->volpan));
 985
 986         InitializeCriticalSection(&(dsb->lock));
 987
 988         /* register buffer */
 989         RtlAcquireResourceExclusive(&(This->lock), TRUE);
 990         if (!(dsbd->dwFlags & DSBCAPS_PRIMARYBUFFER)) {
 991                 IDirectSoundBufferImpl **newbuffers = (IDirectSoundBufferImpl**)HeapReAlloc(GetProcessHeap(),0,This->buffers,sizeof(IDirectSoundBufferImpl*)*(This->nrofbuffers+1));
 992                 if (newbuffers) {
 993                         This->buffers = newbuffers;
 994                         This->buffers[This->nrofbuffers] = dsb;
 995                         This->nrofbuffers++;
 996                         TRACE("buffer count is now %d\n", This->nrofbuffers);
 997                 } else {
 998                         ERR("out of memory for buffer list! Current buffer count is %d\n", This->nrofbuffers);
 999                         err = DSERR_OUTOFMEMORY;
1000                 }
1001         }
1002         RtlReleaseResource(&(This->lock));
1003         IDirectSound8_AddRef((LPDIRECTSOUND8)This);
1004
1005         if (err != DS_OK) {
1006                 /* oops... */
1007                 IDirectSoundBuffer8_Release((LPDIRECTSOUNDBUFFER8)dsb);
1008                 *pdsb = NULL;
1009                 return err;
1010         }
1011
1012         *pdsb = dsb;
1013         return S_OK;
1014 }