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buffer.c

/*                DirectSound
 *
 * Copyright 1998 Marcus Meissner
 * Copyright 1998 Rob Riggs
 * Copyright 2000-2002 TransGaming Technologies, Inc.
 *
 * This library is free software; you can redistribute it and/or
 * modify it under the terms of the GNU Lesser General Public
 * License as published by the Free Software Foundation; either
 * version 2.1 of the License, or (at your option) any later version.
 *
 * This library is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
 * Lesser General Public License for more details.
 *
 * You should have received a copy of the GNU Lesser General Public
 * License along with this library; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include <stdarg.h>

#define NONAMELESSSTRUCT
#define NONAMELESSUNION
#include "windef.h"
#include "winbase.h"
#include "winuser.h"
#include "mmsystem.h"
#include "winreg.h"
#include "winternl.h"
#include "wine/debug.h"
#include "dsound.h"
#include "dsdriver.h"
#include "dsound_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(dsound);

static HRESULT SecondaryBufferImpl_Destroy(SecondaryBufferImpl *pdsb);

/*******************************************************************************
 *          IDirectSoundNotify
 */

struct IDirectSoundNotifyImpl
{
    /* IUnknown fields */
    const IDirectSoundNotifyVtbl *lpVtbl;
    LONG                        ref;
    IDirectSoundBufferImpl*     dsb;
};

static HRESULT IDirectSoundNotifyImpl_Create(IDirectSoundBufferImpl *dsb,
                                             IDirectSoundNotifyImpl **pdsn);
static HRESULT IDirectSoundNotifyImpl_Destroy(IDirectSoundNotifyImpl *pdsn);

static HRESULT WINAPI IDirectSoundNotifyImpl_QueryInterface(
      LPDIRECTSOUNDNOTIFY iface,REFIID riid,LPVOID *ppobj
) {
      IDirectSoundNotifyImpl *This = (IDirectSoundNotifyImpl *)iface;
      TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

      if (This->dsb == NULL) {
            WARN("invalid parameter\n");
            return E_INVALIDARG;
      }

      return IDirectSoundBuffer_QueryInterface((LPDIRECTSOUNDBUFFER)This->dsb, riid, ppobj);
}

static ULONG WINAPI IDirectSoundNotifyImpl_AddRef(LPDIRECTSOUNDNOTIFY iface)
{
    IDirectSoundNotifyImpl *This = (IDirectSoundNotifyImpl *)iface;
    ULONG ref = InterlockedIncrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref - 1);
    return ref;
}

static ULONG WINAPI IDirectSoundNotifyImpl_Release(LPDIRECTSOUNDNOTIFY iface)
{
    IDirectSoundNotifyImpl *This = (IDirectSoundNotifyImpl *)iface;
    ULONG ref = InterlockedDecrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref + 1);

    if (!ref) {
        IDirectSoundBuffer_Release((LPDIRECTSOUNDBUFFER)This->dsb);
        This->dsb->notify = NULL;
        HeapFree(GetProcessHeap(), 0, This);
        TRACE("(%p) released\n", This);
    }
    return ref;
}

static HRESULT WINAPI IDirectSoundNotifyImpl_SetNotificationPositions(
      LPDIRECTSOUNDNOTIFY iface,DWORD howmuch,LPCDSBPOSITIONNOTIFY notify
) {
      IDirectSoundNotifyImpl *This = (IDirectSoundNotifyImpl *)iface;
      TRACE("(%p,0x%08lx,%p)\n",This,howmuch,notify);

        if (howmuch > 0 && notify == NULL) {
          WARN("invalid parameter: notify == NULL\n");
          return DSERR_INVALIDPARAM;
      }

      if (TRACE_ON(dsound)) {
          unsigned int  i;
          for (i=0;i<howmuch;i++)
            TRACE("notify at %ld to %p\n",
                notify[i].dwOffset,notify[i].hEventNotify);
      }

      if (This->dsb->hwnotify) {
          HRESULT hres;
          hres = IDsDriverNotify_SetNotificationPositions(This->dsb->hwnotify, howmuch, notify);
          if (hres != DS_OK)
                WARN("IDsDriverNotify_SetNotificationPositions failed\n");
          return hres;
        } else if (howmuch > 0) {
          /* Make an internal copy of the caller-supplied array.
           * Replace the existing copy if one is already present. */
          if (This->dsb->notifies)
                This->dsb->notifies = HeapReAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
                  This->dsb->notifies, howmuch * sizeof(DSBPOSITIONNOTIFY));
          else
                This->dsb->notifies = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY,
                  howmuch * sizeof(DSBPOSITIONNOTIFY));

          if (This->dsb->notifies == NULL) {
                WARN("out of memory\n");
                return DSERR_OUTOFMEMORY;
          }
          CopyMemory(This->dsb->notifies, notify, howmuch * sizeof(DSBPOSITIONNOTIFY));
          This->dsb->nrofnotifies = howmuch;
        } else {
           HeapFree(GetProcessHeap(), 0, This->dsb->notifies);
           This->dsb->notifies = NULL;
           This->dsb->nrofnotifies = 0;
        }

      return S_OK;
}

static const IDirectSoundNotifyVtbl dsnvt =
{
    IDirectSoundNotifyImpl_QueryInterface,
    IDirectSoundNotifyImpl_AddRef,
    IDirectSoundNotifyImpl_Release,
    IDirectSoundNotifyImpl_SetNotificationPositions,
};

static HRESULT IDirectSoundNotifyImpl_Create(
    IDirectSoundBufferImpl * dsb,
    IDirectSoundNotifyImpl **pdsn)
{
    IDirectSoundNotifyImpl * dsn;
    TRACE("(%p,%p)\n",dsb,pdsn);

    dsn = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(dsn));

    if (dsn == NULL) {
        WARN("out of memory\n");
        return DSERR_OUTOFMEMORY;
    }

    dsn->ref = 0;
    dsn->lpVtbl = &dsnvt;
    dsn->dsb = dsb;
    dsb->notify = dsn;
    IDirectSoundBuffer_AddRef((LPDIRECTSOUNDBUFFER)dsb);

    *pdsn = dsn;
    return DS_OK;
}

static HRESULT IDirectSoundNotifyImpl_Destroy(
    IDirectSoundNotifyImpl *pdsn)
{
    TRACE("(%p)\n",pdsn);

    while (IDirectSoundNotifyImpl_Release((LPDIRECTSOUNDNOTIFY)pdsn) > 0);

    return DS_OK;
}

/*******************************************************************************
 *          IDirectSoundBuffer
 */

static HRESULT WINAPI IDirectSoundBufferImpl_SetFormat(
      LPDIRECTSOUNDBUFFER8 iface,LPCWAVEFORMATEX wfex
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;

      TRACE("(%p,%p)\n",This,wfex);
      /* This method is not available on secondary buffers */
      WARN("invalid call\n");
      return DSERR_INVALIDCALL;
}

static HRESULT WINAPI IDirectSoundBufferImpl_SetVolume(
      LPDIRECTSOUNDBUFFER8 iface,LONG vol
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      LONG oldVol;
      HRESULT hres = DS_OK;

      TRACE("(%p,%ld)\n",This,vol);

      if (!(This->dsbd.dwFlags & DSBCAPS_CTRLVOLUME)) {
            WARN("control unavailable: This->dsbd.dwFlags = 0x%08lx\n", This->dsbd.dwFlags);
            return DSERR_CONTROLUNAVAIL;
      }

      if ((vol > DSBVOLUME_MAX) || (vol < DSBVOLUME_MIN)) {
            WARN("invalid parameter: vol = %ld\n", vol);
            return DSERR_INVALIDPARAM;
      }

      /* **** */
      EnterCriticalSection(&(This->lock));

      if (This->dsbd.dwFlags & DSBCAPS_CTRL3D) {
            oldVol = This->ds3db_lVolume;
            This->ds3db_lVolume = vol;
      } else {
            oldVol = This->volpan.lVolume;
            This->volpan.lVolume = vol;
            if (vol != oldVol)
                  DSOUND_RecalcVolPan(&(This->volpan));
      }

      if (vol != oldVol) {
            if (This->hwbuf) {
                  hres = IDsDriverBuffer_SetVolumePan(This->hwbuf, &(This->volpan));
                  if (hres != DS_OK)
                        WARN("IDsDriverBuffer_SetVolumePan failed\n");
            } else
                  DSOUND_ForceRemix(This);
      }

      LeaveCriticalSection(&(This->lock));
      /* **** */

      return hres;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetVolume(
      LPDIRECTSOUNDBUFFER8 iface,LPLONG vol
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,vol);

      if (!(This->dsbd.dwFlags & DSBCAPS_CTRLVOLUME)) {
            WARN("control unavailable\n");
            return DSERR_CONTROLUNAVAIL;
      }

      if (vol == NULL) {
            WARN("invalid parameter: vol == NULL\n");
            return DSERR_INVALIDPARAM;
      }

      *vol = This->volpan.lVolume;

      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_SetFrequency(
      LPDIRECTSOUNDBUFFER8 iface,DWORD freq
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      DWORD oldFreq;

      TRACE("(%p,%ld)\n",This,freq);

      if (!(This->dsbd.dwFlags & DSBCAPS_CTRLFREQUENCY)) {
            WARN("control unavailable\n");
            return DSERR_CONTROLUNAVAIL;
      }

      if (freq == DSBFREQUENCY_ORIGINAL)
            freq = This->pwfx->nSamplesPerSec;

      if ((freq < DSBFREQUENCY_MIN) || (freq > DSBFREQUENCY_MAX)) {
            WARN("invalid parameter: freq = %ld\n", freq);
            return DSERR_INVALIDPARAM;
      }

      /* **** */
      EnterCriticalSection(&(This->lock));

      oldFreq = This->freq;
      This->freq = freq;
      if (freq != oldFreq) {
            This->freqAdjust = (freq << DSOUND_FREQSHIFT) / This->device->pwfx->nSamplesPerSec;
            This->nAvgBytesPerSec = freq * This->pwfx->nBlockAlign;
            DSOUND_RecalcFormat(This);
            if (!This->hwbuf)
                  DSOUND_ForceRemix(This);
      }

      LeaveCriticalSection(&(This->lock));
      /* **** */

      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_Play(
      LPDIRECTSOUNDBUFFER8 iface,DWORD reserved1,DWORD reserved2,DWORD flags
) {
      HRESULT hres = DS_OK;
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%08lx,%08lx,%08lx)\n",This,reserved1,reserved2,flags);

      /* **** */
      EnterCriticalSection(&(This->lock));

      This->playflags = flags;
      if (This->state == STATE_STOPPED) {
            This->leadin = TRUE;
            This->startpos = This->buf_mixpos;
            This->state = STATE_STARTING;
      } else if (This->state == STATE_STOPPING)
            This->state = STATE_PLAYING;
      if (This->hwbuf) {
            hres = IDsDriverBuffer_Play(This->hwbuf, 0, 0, This->playflags);
            if (hres != DS_OK)
                  WARN("IDsDriverBuffer_Play failed\n");
            else
                  This->state = STATE_PLAYING;
      }

      LeaveCriticalSection(&(This->lock));
      /* **** */

      return hres;
}

static HRESULT WINAPI IDirectSoundBufferImpl_Stop(LPDIRECTSOUNDBUFFER8 iface)
{
      HRESULT hres = DS_OK;
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p)\n",This);

      /* **** */
      EnterCriticalSection(&(This->lock));

      if (This->state == STATE_PLAYING)
            This->state = STATE_STOPPING;
      else if (This->state == STATE_STARTING)
            This->state = STATE_STOPPED;
      if (This->hwbuf) {
            hres = IDsDriverBuffer_Stop(This->hwbuf);
            if (hres != DS_OK)
                  WARN("IDsDriverBuffer_Stop failed\n");
            else
                  This->state = STATE_STOPPED;
      }
      DSOUND_CheckEvent(This, 0);

      LeaveCriticalSection(&(This->lock));
      /* **** */

      return hres;
}

static ULONG WINAPI IDirectSoundBufferImpl_AddRef(LPDIRECTSOUNDBUFFER8 iface)
{
    IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
    ULONG ref = InterlockedIncrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref - 1);
    return ref;
}

static ULONG WINAPI IDirectSoundBufferImpl_Release(LPDIRECTSOUNDBUFFER8 iface)
{
    IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
    ULONG ref = InterlockedDecrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref + 1);

    if (!ref) {
      DirectSoundDevice_RemoveBuffer(This->device, This);

      This->lock.DebugInfo->Spare[0] = 0;
      DeleteCriticalSection(&(This->lock));

      if (This->hwbuf) {
            IDsDriverBuffer_Release(This->hwbuf);
            if (This->device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) {
                  This->buffer->ref--;
                  if (This->buffer->ref==0) {
                        HeapFree(GetProcessHeap(),0,This->buffer->memory);
                        HeapFree(GetProcessHeap(),0,This->buffer);
                  }
            }
      } else {
            This->buffer->ref--;
            if (This->buffer->ref==0) {
                  HeapFree(GetProcessHeap(),0,This->buffer->memory);
                  HeapFree(GetProcessHeap(),0,This->buffer);
            }
      }

      HeapFree(GetProcessHeap(), 0, This->notifies);
      HeapFree(GetProcessHeap(), 0, This->pwfx);
      HeapFree(GetProcessHeap(), 0, This);

      TRACE("(%p) released\n", This);
    }
    return ref;
}

DWORD DSOUND_CalcPlayPosition(IDirectSoundBufferImpl *This, DWORD pplay, DWORD pwrite)
{
      DWORD bplay = This->buf_mixpos;
      DWORD pmix = This->primary_mixpos;
        DirectSoundDevice * device = This->device;
      TRACE("(%p, pplay=%lu, pwrite=%lu)\n", This, pplay, pwrite);

      /* the actual primary play position (pplay) is always behind last mixed (pmix),
       * unless the computer is too slow or something */
      /* we need to know how far away we are from there */
      if (pmix < pplay) pmix += device->buflen; /* wraparound */
      pmix -= pplay;
      /* detect buffer underrun */
      if (pwrite < pplay) pwrite += device->buflen; /* wraparound */
      pwrite -= pplay;
      if (pmix > (ds_snd_queue_max * device->fraglen + pwrite + device->writelead)) {
            WARN("detected an underrun: primary queue was %ld\n",pmix);
            pmix = 0;
      }
      /* divide the offset by its sample size */
      pmix /= device->pwfx->nBlockAlign;
      TRACE("primary back-samples=%ld\n",pmix);
      /* adjust for our frequency */
      pmix = (pmix * This->freqAdjust) >> DSOUND_FREQSHIFT;
      /* multiply by our own sample size */
      pmix *= This->pwfx->nBlockAlign;
      TRACE("this back-offset=%ld\n", pmix);
      /* subtract from our last mixed position */
      while (bplay < pmix) bplay += This->buflen; /* wraparound */
      bplay -= pmix;
      if (This->leadin && ((bplay < This->startpos) || (bplay > This->buf_mixpos))) {
            /* seems we haven't started playing yet */
            TRACE("this still in lead-in phase\n");
            bplay = This->startpos;
      }
      /* return the result */
      return bplay;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetCurrentPosition(
      LPDIRECTSOUNDBUFFER8 iface,LPDWORD playpos,LPDWORD writepos
) {
      HRESULT     hres;
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%p,%p)\n",This,playpos,writepos);
      if (This->hwbuf) {
            hres=IDsDriverBuffer_GetPosition(This->hwbuf,playpos,writepos);
            if (hres != DS_OK) {
                WARN("IDsDriverBuffer_GetPosition failed\n");
                return hres;
            }
      } else {
            if (playpos && (This->state != STATE_PLAYING)) {
                  /* we haven't been merged into the primary buffer (yet) */
                  *playpos = This->buf_mixpos;
            } else if (playpos) {
                  DWORD pplay, pwrite;
                  /* let's get this exact; first, recursively call GetPosition on the primary */
                  EnterCriticalSection(&(This->device->mixlock));
                  if (DSOUND_PrimaryGetPosition(This->device, &pplay, &pwrite) != DS_OK)
                        WARN("DSOUND_PrimaryGetPosition failed\n");
                  /* detect HEL mode underrun */
                  if (!(This->device->hwbuf || This->device->pwqueue))
                        TRACE("detected an underrun\n");
                  if ((This->dsbd.dwFlags & DSBCAPS_GETCURRENTPOSITION2) || This->device->hwbuf) {
                        /* calculate play position using this */
                        *playpos = DSOUND_CalcPlayPosition(This, pplay, pwrite);
                  } else {
                        /* (unless the app isn't using GETCURRENTPOSITION2) */
                        /* don't know exactly how this should be handled...
                         * the docs says that play cursor is reported as directly
                         * behind write cursor, hmm... */
                        /* let's just do what might work for Half-Life */
                        DWORD wp;
                        wp = (This->device->pwplay + ds_hel_margin) * This->device->fraglen;
                        wp %= This->device->buflen;
                        *playpos = DSOUND_CalcPlayPosition(This, wp, pwrite);
                  }
                  LeaveCriticalSection(&(This->device->mixlock));
            }
            if (writepos)
                    *writepos = This->buf_mixpos;
      }
      if (writepos) {
            if (This->state != STATE_STOPPED) {
                  /* apply the documented 10ms lead to writepos */
                  *writepos += This->writelead;
            }
            *writepos %= This->buflen;
      }
      if (playpos)
            This->last_playpos = *playpos;
      TRACE("playpos = %ld, writepos = %ld (%p, time=%ld)\n", playpos?*playpos:0, writepos?*writepos:0, This, GetTickCount());
      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetStatus(
      LPDIRECTSOUNDBUFFER8 iface,LPDWORD status
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%p), thread is %04lx\n",This,status,GetCurrentThreadId());

      if (status == NULL) {
            WARN("invalid parameter: status = NULL\n");
            return DSERR_INVALIDPARAM;
      }

      *status = 0;
      if ((This->state == STATE_STARTING) || (This->state == STATE_PLAYING)) {
            *status |= DSBSTATUS_PLAYING;
            if (This->playflags & DSBPLAY_LOOPING)
                  *status |= DSBSTATUS_LOOPING;
      }

      TRACE("status=%lx\n", *status);
      return DS_OK;
}


static HRESULT WINAPI IDirectSoundBufferImpl_GetFormat(
    LPDIRECTSOUNDBUFFER8 iface,
    LPWAVEFORMATEX lpwf,
    DWORD wfsize,
    LPDWORD wfwritten)
{
    DWORD size;
    IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
    TRACE("(%p,%p,%ld,%p)\n",This,lpwf,wfsize,wfwritten);

    size = sizeof(WAVEFORMATEX) + This->pwfx->cbSize;

    if (lpwf) { /* NULL is valid */
        if (wfsize >= size) {
            CopyMemory(lpwf,This->pwfx,size);
            if (wfwritten)
                *wfwritten = size;
        } else {
            WARN("invalid parameter: wfsize too small\n");
            if (wfwritten)
                *wfwritten = 0;
            return DSERR_INVALIDPARAM;
        }
    } else {
        if (wfwritten)
            *wfwritten = sizeof(WAVEFORMATEX) + This->pwfx->cbSize;
        else {
            WARN("invalid parameter: wfwritten == NULL\n");
            return DSERR_INVALIDPARAM;
        }
    }

    return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_Lock(
      LPDIRECTSOUNDBUFFER8 iface,DWORD writecursor,DWORD writebytes,LPVOID lplpaudioptr1,LPDWORD audiobytes1,LPVOID lplpaudioptr2,LPDWORD audiobytes2,DWORD flags
) {
      HRESULT hres = DS_OK;
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;

      TRACE("(%p,%ld,%ld,%p,%p,%p,%p,0x%08lx) at %ld\n",
            This,
            writecursor,
            writebytes,
            lplpaudioptr1,
            audiobytes1,
            lplpaudioptr2,
            audiobytes2,
            flags,
            GetTickCount()
      );

        /* when this flag is set, writecursor is meaningless and must be calculated */
      if (flags & DSBLOCK_FROMWRITECURSOR) {
            /* GetCurrentPosition does too much magic to duplicate here */
            hres = IDirectSoundBufferImpl_GetCurrentPosition(iface, NULL, &writecursor);
            if (hres != DS_OK) {
                  WARN("IDirectSoundBufferImpl_GetCurrentPosition failed\n");
                  return hres;
            }
      }

        /* when this flag is set, writebytes is meaningless and must be set */
      if (flags & DSBLOCK_ENTIREBUFFER)
            writebytes = This->buflen;

      if (writecursor >= This->buflen) {
            WARN("Invalid parameter, writecursor: %lu >= buflen: %lu\n",
                 writecursor, This->buflen);
            return DSERR_INVALIDPARAM;
        }

      if (writebytes > This->buflen) {
            WARN("Invalid parameter, writebytes: %lu > buflen: %lu\n",
                 writebytes, This->buflen);
            return DSERR_INVALIDPARAM;
        }

      EnterCriticalSection(&(This->lock));

      if ((writebytes == This->buflen) &&
          ((This->state == STATE_STARTING) ||
           (This->state == STATE_PLAYING)))
            /* some games, like Half-Life, try to be clever (not) and
             * keep one secondary buffer, and mix sounds into it itself,
             * locking the entire buffer every time... so we can just forget
             * about tracking the last-written-to-position... */
            This->probably_valid_to = (DWORD)-1;
      else
            This->probably_valid_to = writecursor;

      if (!(This->device->drvdesc.dwFlags & DSDDESC_DONTNEEDSECONDARYLOCK) && This->hwbuf) {
            hres = IDsDriverBuffer_Lock(This->hwbuf,
                             lplpaudioptr1, audiobytes1,
                             lplpaudioptr2, audiobytes2,
                             writecursor, writebytes,
                             0);
            if (hres != DS_OK) {
                  WARN("IDsDriverBuffer_Lock failed\n");
                  LeaveCriticalSection(&(This->lock));
                  return hres;
            }
      } else {
            BOOL remix = FALSE;
            if (writecursor+writebytes <= This->buflen) {
                  *(LPBYTE*)lplpaudioptr1 = This->buffer->memory+writecursor;
                  *audiobytes1 = writebytes;
                  if (lplpaudioptr2)
                        *(LPBYTE*)lplpaudioptr2 = NULL;
                  if (audiobytes2)
                        *audiobytes2 = 0;
                  TRACE("->%ld.0\n",writebytes);
            } else {
                  *(LPBYTE*)lplpaudioptr1 = This->buffer->memory+writecursor;
                  *audiobytes1 = This->buflen-writecursor;
                  if (lplpaudioptr2)
                        *(LPBYTE*)lplpaudioptr2 = This->buffer->memory;
                  if (audiobytes2)
                        *audiobytes2 = writebytes-(This->buflen-writecursor);
                  TRACE("->%ld.%ld\n",*audiobytes1,audiobytes2?*audiobytes2:0);
            }
            if (This->state == STATE_PLAYING) {
                  /* if the segment between playpos and buf_mixpos is touched,
                   * we need to cancel some mixing */
                  /* we'll assume that the app always calls GetCurrentPosition before
                   * locking a playing buffer, so that last_playpos is up-to-date */
                  if (This->buf_mixpos >= This->last_playpos) {
                        if (This->buf_mixpos > writecursor &&
                            This->last_playpos < writecursor+writebytes)
                              remix = TRUE;
                  } else {
                        if (This->buf_mixpos > writecursor ||
                            This->last_playpos < writecursor+writebytes)
                              remix = TRUE;
                  }
                  if (remix) {
                        TRACE("locking prebuffered region, ouch\n");
                        DSOUND_MixCancelAt(This, writecursor);
                  }
            }
      }

      LeaveCriticalSection(&(This->lock));

      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_SetCurrentPosition(
      LPDIRECTSOUNDBUFFER8 iface,DWORD newpos
) {
      HRESULT hres = DS_OK;
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%ld)\n",This,newpos);

      /* **** */
      EnterCriticalSection(&(This->lock));

      newpos %= This->buflen;
      This->buf_mixpos = newpos;
      if (This->hwbuf) {
            hres = IDsDriverBuffer_SetPosition(This->hwbuf, This->buf_mixpos);
            if (hres != DS_OK)
                  WARN("IDsDriverBuffer_SetPosition failed\n");
      }

      LeaveCriticalSection(&(This->lock));
      /* **** */

      return hres;
}

static HRESULT WINAPI IDirectSoundBufferImpl_SetPan(
      LPDIRECTSOUNDBUFFER8 iface,LONG pan
) {
      HRESULT hres = DS_OK;
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;

      TRACE("(%p,%ld)\n",This,pan);

      if ((pan > DSBPAN_RIGHT) || (pan < DSBPAN_LEFT)) {
            WARN("invalid parameter: pan = %ld\n", pan);
            return DSERR_INVALIDPARAM;
      }

      /* You cannot use both pan and 3D controls */
      if (!(This->dsbd.dwFlags & DSBCAPS_CTRLPAN) ||
          (This->dsbd.dwFlags & DSBCAPS_CTRL3D)) {
            WARN("control unavailable\n");
            return DSERR_CONTROLUNAVAIL;
      }

      /* **** */
      EnterCriticalSection(&(This->lock));

      if (This->volpan.lPan != pan) {
            This->volpan.lPan = pan;
            DSOUND_RecalcVolPan(&(This->volpan));

            if (This->hwbuf) {
                  hres = IDsDriverBuffer_SetVolumePan(This->hwbuf, &(This->volpan));
                  if (hres != DS_OK)
                        WARN("IDsDriverBuffer_SetVolumePan failed\n");
            } else
                  DSOUND_ForceRemix(This);
      }

      LeaveCriticalSection(&(This->lock));
      /* **** */

      return hres;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetPan(
      LPDIRECTSOUNDBUFFER8 iface,LPLONG pan
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,pan);

      if (!(This->dsbd.dwFlags & DSBCAPS_CTRLPAN)) {
            WARN("control unavailable\n");
            return DSERR_CONTROLUNAVAIL;
      }

      if (pan == NULL) {
            WARN("invalid parameter: pan = NULL\n");
            return DSERR_INVALIDPARAM;
      }

      *pan = This->volpan.lPan;

      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_Unlock(
      LPDIRECTSOUNDBUFFER8 iface,LPVOID p1,DWORD x1,LPVOID p2,DWORD x2
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      DWORD probably_valid_to;
      HRESULT hres = DS_OK;

      TRACE("(%p,%p,%ld,%p,%ld)\n", This,p1,x1,p2,x2);

      /* **** */
      EnterCriticalSection(&(This->lock));

      if (!(This->device->drvdesc.dwFlags & DSDDESC_DONTNEEDSECONDARYLOCK) && This->hwbuf) {
            hres = IDsDriverBuffer_Unlock(This->hwbuf, p1, x1, p2, x2);
            if (hres != DS_OK)
                  WARN("IDsDriverBuffer_Unlock failed\n");
      }

        if (hres == DS_OK) {
            if (p2) probably_valid_to = (((LPBYTE)p2)-This->buffer->memory) + x2;
            else probably_valid_to = (((LPBYTE)p1)-This->buffer->memory) + x1;
            probably_valid_to %= This->buflen;
            if ((probably_valid_to == 0) && ((x1+x2) == This->buflen) &&
                ((This->state == STATE_STARTING) ||
                 (This->state == STATE_PLAYING)))
                  /* see IDirectSoundBufferImpl_Lock */
                  probably_valid_to = (DWORD)-1;
            This->probably_valid_to = probably_valid_to;
      }

      LeaveCriticalSection(&(This->lock));
      /* **** */

      TRACE("probably_valid_to=%ld\n", This->probably_valid_to);
      return hres;
}

static HRESULT WINAPI IDirectSoundBufferImpl_Restore(
      LPDIRECTSOUNDBUFFER8 iface
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      FIXME("(%p):stub\n",This);
      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetFrequency(
      LPDIRECTSOUNDBUFFER8 iface,LPDWORD freq
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,freq);

      if (freq == NULL) {
            WARN("invalid parameter: freq = NULL\n");
            return DSERR_INVALIDPARAM;
      }

      *freq = This->freq;
      TRACE("-> %ld\n", *freq);

      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_SetFX(
      LPDIRECTSOUNDBUFFER8 iface,DWORD dwEffectsCount,LPDSEFFECTDESC pDSFXDesc,LPDWORD pdwResultCodes
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      DWORD u;

      FIXME("(%p,%lu,%p,%p): stub\n",This,dwEffectsCount,pDSFXDesc,pdwResultCodes);

      if (pdwResultCodes)
            for (u=0; u<dwEffectsCount; u++) pdwResultCodes[u] = DSFXR_UNKNOWN;

      WARN("control unavailable\n");
      return DSERR_CONTROLUNAVAIL;
}

static HRESULT WINAPI IDirectSoundBufferImpl_AcquireResources(
      LPDIRECTSOUNDBUFFER8 iface,DWORD dwFlags,DWORD dwEffectsCount,LPDWORD pdwResultCodes
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      DWORD u;

      FIXME("(%p,%08lu,%lu,%p): stub\n",This,dwFlags,dwEffectsCount,pdwResultCodes);

      if (pdwResultCodes)
            for (u=0; u<dwEffectsCount; u++) pdwResultCodes[u] = DSFXR_UNKNOWN;

      WARN("control unavailable\n");
      return DSERR_CONTROLUNAVAIL;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetObjectInPath(
      LPDIRECTSOUNDBUFFER8 iface,REFGUID rguidObject,DWORD dwIndex,REFGUID rguidInterface,LPVOID* ppObject
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;

      FIXME("(%p,%s,%lu,%s,%p): stub\n",This,debugstr_guid(rguidObject),dwIndex,debugstr_guid(rguidInterface),ppObject);

      WARN("control unavailable\n");
      return DSERR_CONTROLUNAVAIL;
}

static HRESULT WINAPI IDirectSoundBufferImpl_Initialize(
      LPDIRECTSOUNDBUFFER8 iface,LPDIRECTSOUND dsound,LPCDSBUFFERDESC dbsd
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      FIXME("(%p,%p,%p):stub\n",This,dsound,dbsd);
      DPRINTF("Re-Init!!!\n");
      WARN("already initialized\n");
      return DSERR_ALREADYINITIALIZED;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetCaps(
      LPDIRECTSOUNDBUFFER8 iface,LPDSBCAPS caps
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
      TRACE("(%p)->(%p)\n",This,caps);

      if (caps == NULL) {
            WARN("invalid parameter: caps == NULL\n");
            return DSERR_INVALIDPARAM;
      }

      if (caps->dwSize < sizeof(*caps)) {
            WARN("invalid parameter: caps->dwSize = %ld\n",caps->dwSize);
            return DSERR_INVALIDPARAM;
      }

      caps->dwFlags = This->dsbd.dwFlags;
      if (This->hwbuf) caps->dwFlags |= DSBCAPS_LOCHARDWARE;
      else caps->dwFlags |= DSBCAPS_LOCSOFTWARE;

      caps->dwBufferBytes = This->buflen;

      /* This value represents the speed of the "unlock" command.
         As unlock is quite fast (it does not do anything), I put
         4096 ko/s = 4 Mo / s */
      /* FIXME: hwbuf speed */
      caps->dwUnlockTransferRate = 4096;
      caps->dwPlayCpuOverhead = 0;

      return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_QueryInterface(
      LPDIRECTSOUNDBUFFER8 iface,REFIID riid,LPVOID *ppobj
) {
      IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;

      TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

      if (ppobj == NULL) {
            WARN("invalid parameter\n");
            return E_INVALIDARG;
      }

      *ppobj = NULL;    /* assume failure */

      if ( IsEqualGUID(riid, &IID_IUnknown) ||
           IsEqualGUID(riid, &IID_IDirectSoundBuffer) ||
           IsEqualGUID(riid, &IID_IDirectSoundBuffer8) ) {
            if (!This->secondary)
                  SecondaryBufferImpl_Create(This, &(This->secondary));
            if (This->secondary) {
                  IDirectSoundBuffer8_AddRef((LPDIRECTSOUNDBUFFER8)This->secondary);
                  *ppobj = This->secondary;
                  return S_OK;
            }
            WARN("IID_IDirectSoundBuffer\n");
            return E_NOINTERFACE;
      }

      if ( IsEqualGUID( &IID_IDirectSoundNotify, riid ) ) {
            if (!This->notify)
                  IDirectSoundNotifyImpl_Create(This, &(This->notify));
            if (This->notify) {
                  IDirectSoundNotify_AddRef((LPDIRECTSOUNDNOTIFY)This->notify);
                  *ppobj = This->notify;
                  return S_OK;
            }
            WARN("IID_IDirectSoundNotify\n");
            return E_NOINTERFACE;
      }

      if ( IsEqualGUID( &IID_IDirectSound3DBuffer, riid ) ) {
            if (!This->ds3db)
                  IDirectSound3DBufferImpl_Create(This, &(This->ds3db));
            if (This->ds3db) {
                  IDirectSound3DBuffer_AddRef((LPDIRECTSOUND3DBUFFER)This->ds3db);
                  *ppobj = This->ds3db;
                  return S_OK;
            }
            WARN("IID_IDirectSound3DBuffer\n");
            return E_NOINTERFACE;
      }

      if ( IsEqualGUID( &IID_IDirectSound3DListener, riid ) ) {
            ERR("app requested IDirectSound3DListener on secondary buffer\n");
            return E_NOINTERFACE;
      }

      if ( IsEqualGUID( &IID_IKsPropertySet, riid ) ) {
            if (!This->iks)
                  IKsBufferPropertySetImpl_Create(This, &(This->iks));
            if (This->iks) {
                  IKsPropertySet_AddRef((LPKSPROPERTYSET)This->iks);
                  *ppobj = This->iks;
                  return S_OK;
            }
            WARN("IID_IKsPropertySet\n");
            return E_NOINTERFACE;
      }

      FIXME( "Unknown IID %s\n", debugstr_guid( riid ) );

      return E_NOINTERFACE;
}

static const IDirectSoundBuffer8Vtbl dsbvt =
{
      IDirectSoundBufferImpl_QueryInterface,
      IDirectSoundBufferImpl_AddRef,
      IDirectSoundBufferImpl_Release,
      IDirectSoundBufferImpl_GetCaps,
      IDirectSoundBufferImpl_GetCurrentPosition,
      IDirectSoundBufferImpl_GetFormat,
      IDirectSoundBufferImpl_GetVolume,
      IDirectSoundBufferImpl_GetPan,
      IDirectSoundBufferImpl_GetFrequency,
      IDirectSoundBufferImpl_GetStatus,
      IDirectSoundBufferImpl_Initialize,
      IDirectSoundBufferImpl_Lock,
      IDirectSoundBufferImpl_Play,
      IDirectSoundBufferImpl_SetCurrentPosition,
      IDirectSoundBufferImpl_SetFormat,
      IDirectSoundBufferImpl_SetVolume,
      IDirectSoundBufferImpl_SetPan,
      IDirectSoundBufferImpl_SetFrequency,
      IDirectSoundBufferImpl_Stop,
      IDirectSoundBufferImpl_Unlock,
      IDirectSoundBufferImpl_Restore,
      IDirectSoundBufferImpl_SetFX,
      IDirectSoundBufferImpl_AcquireResources,
      IDirectSoundBufferImpl_GetObjectInPath
};

HRESULT IDirectSoundBufferImpl_Create(
      DirectSoundDevice * device,
      IDirectSoundBufferImpl **pdsb,
      LPCDSBUFFERDESC dsbd)
{
      IDirectSoundBufferImpl *dsb;
      LPWAVEFORMATEX wfex = dsbd->lpwfxFormat;
      HRESULT err = DS_OK;
      DWORD capf = 0;
      int use_hw, alloc_size, cp_size;
      TRACE("(%p,%p,%p)\n",device,pdsb,dsbd);

      if (dsbd->dwBufferBytes < DSBSIZE_MIN || dsbd->dwBufferBytes > DSBSIZE_MAX) {
            WARN("invalid parameter: dsbd->dwBufferBytes = %ld\n", dsbd->dwBufferBytes);
            *pdsb = NULL;
            return DSERR_INVALIDPARAM; /* FIXME: which error? */
      }

      dsb = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*dsb));

      if (dsb == 0) {
            WARN("out of memory\n");
            *pdsb = NULL;
            return DSERR_OUTOFMEMORY;
      }

      TRACE("Created buffer at %p\n", dsb);

      dsb->ref = 0;
      dsb->secondary = 0;
      dsb->device = device;
      dsb->lpVtbl = &dsbvt;
      dsb->iks = NULL;

      /* size depends on version */
      CopyMemory(&dsb->dsbd, dsbd, dsbd->dwSize);

      /* variable sized struct so calculate size based on format */
      if (wfex->wFormatTag == WAVE_FORMAT_PCM) {
            alloc_size = sizeof(WAVEFORMATEX);
            cp_size = sizeof(PCMWAVEFORMAT);
      } else 
            alloc_size = cp_size = sizeof(WAVEFORMATEX) + wfex->cbSize;

      dsb->pwfx = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,alloc_size);
      if (dsb->pwfx == NULL) {
            WARN("out of memory\n");
            HeapFree(GetProcessHeap(),0,dsb);
            *pdsb = NULL;
            return DSERR_OUTOFMEMORY;
      }

      CopyMemory(dsb->pwfx, wfex, cp_size);

      if (dsbd->dwBufferBytes % dsbd->lpwfxFormat->nBlockAlign)
            dsb->buflen = dsbd->dwBufferBytes + 
                  (dsbd->lpwfxFormat->nBlockAlign - 
                  (dsbd->dwBufferBytes % dsbd->lpwfxFormat->nBlockAlign));
      else
            dsb->buflen = dsbd->dwBufferBytes;

      dsb->freq = dsbd->lpwfxFormat->nSamplesPerSec;
      dsb->notify = NULL;
      dsb->notifies = NULL;
      dsb->nrofnotifies = 0;
      dsb->hwnotify = 0;

      /* Check necessary hardware mixing capabilities */
      if (wfex->nChannels==2) capf |= DSCAPS_SECONDARYSTEREO;
      else capf |= DSCAPS_SECONDARYMONO;
      if (wfex->wBitsPerSample==16) capf |= DSCAPS_SECONDARY16BIT;
      else capf |= DSCAPS_SECONDARY8BIT;

      use_hw = (device->drvcaps.dwFlags & capf) == capf;
      TRACE("use_hw = 0x%08x, capf = 0x%08lx, device->drvcaps.dwFlags = 0x%08lx\n", use_hw, capf, device->drvcaps.dwFlags);

      /* FIXME: check hardware sample rate mixing capabilities */
      /* FIXME: check app hints for software/hardware buffer (STATIC, LOCHARDWARE, etc) */
      /* FIXME: check whether any hardware buffers are left */
      /* FIXME: handle DSDHEAP_CREATEHEAP for hardware buffers */

      /* Allocate an empty buffer */
      dsb->buffer = HeapAlloc(GetProcessHeap(),0,sizeof(*(dsb->buffer)));
      if (dsb->buffer == NULL) {
            WARN("out of memory\n");
            HeapFree(GetProcessHeap(),0,dsb->pwfx);
            HeapFree(GetProcessHeap(),0,dsb);
            *pdsb = NULL;
            return DSERR_OUTOFMEMORY;
      }

      /* Allocate system memory for buffer if applicable */
      if ((device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) || !use_hw) {
            dsb->buffer->memory = HeapAlloc(GetProcessHeap(),0,dsb->buflen);
            if (dsb->buffer->memory == NULL) {
                  WARN("out of memory\n");
                  HeapFree(GetProcessHeap(),0,dsb->pwfx);
                  HeapFree(GetProcessHeap(),0,dsb->buffer);
                  HeapFree(GetProcessHeap(),0,dsb);
                  *pdsb = NULL;
                  return DSERR_OUTOFMEMORY;
            }
            dsb->buffer->ref = 1;
            FillMemory(dsb->buffer->memory, dsb->buflen, dsbd->lpwfxFormat->wBitsPerSample == 8 ? 128 : 0);
      }

      /* Allocate the hardware buffer */
      if (use_hw) {
            err = IDsDriver_CreateSoundBuffer(device->driver,wfex,dsbd->dwFlags,0,
                                      &(dsb->buflen),&(dsb->buffer->memory),
                                      (LPVOID*)&(dsb->hwbuf));
                /* fall back to software buffer on failure */
            if (err != DS_OK) {
                  TRACE("IDsDriver_CreateSoundBuffer failed, falling back to software buffer\n");
                  use_hw = 0;
                  if (device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) {
                        dsb->buffer->memory = HeapAlloc(GetProcessHeap(),0,dsb->buflen);
                        if (dsb->buffer->memory == NULL) {
                              WARN("out of memory\n");
                              HeapFree(GetProcessHeap(),0,dsb->buffer);
                              HeapFree(GetProcessHeap(),0,dsb->pwfx);
                              HeapFree(GetProcessHeap(),0,dsb);
                              *pdsb = NULL;
                              return DSERR_OUTOFMEMORY;
                        }
                        dsb->buffer->ref = 1;
                        FillMemory(dsb->buffer->memory, dsb->buflen, dsbd->lpwfxFormat->wBitsPerSample == 8 ? 128 : 0);
                  }
                  err = DS_OK;
            }
      }

      /* calculate fragment size and write lead */
      DSOUND_RecalcFormat(dsb);

      /* It's not necessary to initialize values to zero since */
      /* we allocated this structure with HEAP_ZERO_MEMORY... */
      dsb->playpos = 0;
      dsb->buf_mixpos = 0;
      dsb->state = STATE_STOPPED;

      dsb->freqAdjust = (dsb->freq << DSOUND_FREQSHIFT) /
            device->pwfx->nSamplesPerSec;
      dsb->nAvgBytesPerSec = dsb->freq *
            dsbd->lpwfxFormat->nBlockAlign;

      if (dsb->dsbd.dwFlags & DSBCAPS_CTRL3D) {
            dsb->ds3db_ds3db.dwSize = sizeof(DS3DBUFFER);
            dsb->ds3db_ds3db.vPosition.x = 0.0;
            dsb->ds3db_ds3db.vPosition.y = 0.0;
            dsb->ds3db_ds3db.vPosition.z = 0.0;
            dsb->ds3db_ds3db.vVelocity.x = 0.0;
            dsb->ds3db_ds3db.vVelocity.y = 0.0;
            dsb->ds3db_ds3db.vVelocity.z = 0.0;
            dsb->ds3db_ds3db.dwInsideConeAngle = DS3D_DEFAULTCONEANGLE;
            dsb->ds3db_ds3db.dwOutsideConeAngle = DS3D_DEFAULTCONEANGLE;
            dsb->ds3db_ds3db.vConeOrientation.x = 0.0;
            dsb->ds3db_ds3db.vConeOrientation.y = 0.0;
            dsb->ds3db_ds3db.vConeOrientation.z = 0.0;
            dsb->ds3db_ds3db.lConeOutsideVolume = DS3D_DEFAULTCONEOUTSIDEVOLUME;
            dsb->ds3db_ds3db.flMinDistance = DS3D_DEFAULTMINDISTANCE;
            dsb->ds3db_ds3db.flMaxDistance = DS3D_DEFAULTMAXDISTANCE;
            dsb->ds3db_ds3db.dwMode = DS3DMODE_NORMAL;

            dsb->ds3db_need_recalc = FALSE;
            DSOUND_Calc3DBuffer(dsb);
      } else
            DSOUND_RecalcVolPan(&(dsb->volpan));

      InitializeCriticalSection(&(dsb->lock));
        dsb->lock.DebugInfo->Spare[0] = (DWORD_PTR)"DSOUNDBUFFER_lock";

      /* register buffer if not primary */
      if (!(dsbd->dwFlags & DSBCAPS_PRIMARYBUFFER)) {
            err = DirectSoundDevice_AddBuffer(device, dsb);
            if (err != DS_OK) {
                  HeapFree(GetProcessHeap(),0,dsb->buffer->memory);
                  HeapFree(GetProcessHeap(),0,dsb->buffer);
                  dsb->lock.DebugInfo->Spare[0] = 0;
                  DeleteCriticalSection(&(dsb->lock));
                  HeapFree(GetProcessHeap(),0,dsb->pwfx);
                  HeapFree(GetProcessHeap(),0,dsb);
                  dsb = NULL;
            }
      }

      *pdsb = dsb;
      return err;
}

HRESULT IDirectSoundBufferImpl_Destroy(
    IDirectSoundBufferImpl *pdsb)
{
    TRACE("(%p)\n",pdsb);

    /* This keeps the *_Destroy functions from possibly deleting
     * this object until it is ready to be deleted */
    IDirectSoundBufferImpl_AddRef((LPDIRECTSOUNDBUFFER8)pdsb);

    if (pdsb->iks) {
        WARN("iks not NULL\n");
        IKsBufferPropertySetImpl_Destroy(pdsb->iks);
        pdsb->iks = NULL;
    }

    if (pdsb->ds3db) {
        WARN("ds3db not NULL\n");
        IDirectSound3DBufferImpl_Destroy(pdsb->ds3db);
        pdsb->ds3db = NULL;
    }

    if (pdsb->notify) {
        WARN("notify not NULL\n");
        IDirectSoundNotifyImpl_Destroy(pdsb->notify);
        pdsb->notify = NULL;
    }

    if (pdsb->secondary) {
        WARN("dsb not NULL\n");
        SecondaryBufferImpl_Destroy(pdsb->secondary);
        pdsb->secondary = NULL;
    }

    while (IDirectSoundBuffer8_Release((LPDIRECTSOUNDBUFFER8)pdsb) > 0);

    return S_OK;
}

HRESULT IDirectSoundBufferImpl_Duplicate(
    DirectSoundDevice *device,
    IDirectSoundBufferImpl **ppdsb,
    IDirectSoundBufferImpl *pdsb)
{
    IDirectSoundBufferImpl *dsb;
    HRESULT hres = DS_OK;
    int size;
    TRACE("(%p,%p,%p)\n", device, pdsb, pdsb);

    dsb = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*dsb));

    if (dsb == NULL) {
        WARN("out of memory\n");
        *ppdsb = NULL;
        return DSERR_OUTOFMEMORY;
    }

    CopyMemory(dsb, pdsb, sizeof(IDirectSoundBufferImpl));

    if (pdsb->hwbuf) {
        TRACE("duplicating hardware buffer\n");

        hres = IDsDriver_DuplicateSoundBuffer(device->driver, pdsb->hwbuf,
                                              (LPVOID *)&dsb->hwbuf);
        if (hres != DS_OK) {
            TRACE("IDsDriver_DuplicateSoundBuffer failed, falling back to "
                  "software buffer\n");
            dsb->hwbuf = NULL;
            /* allocate buffer */
            if (device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY) {
                dsb->buffer = HeapAlloc(GetProcessHeap(),0,sizeof(*(dsb->buffer)));
                if (dsb->buffer == NULL) {
                    WARN("out of memory\n");
                    HeapFree(GetProcessHeap(),0,dsb);
                    *ppdsb = NULL;
                    return DSERR_OUTOFMEMORY;
                }

                dsb->buffer->memory = HeapAlloc(GetProcessHeap(),0,dsb->buflen);
                if (dsb->buffer->memory == NULL) {
                    WARN("out of memory\n");
                    HeapFree(GetProcessHeap(),0,dsb->buffer);
                    HeapFree(GetProcessHeap(),0,dsb);
                    *ppdsb = NULL;
                    return DSERR_OUTOFMEMORY;
                }
                dsb->buffer->ref = 1;

                /* FIXME: copy buffer ? */
            }
        }
    } else {
        dsb->hwbuf = NULL;
        dsb->buffer->ref++;
    }

    dsb->ref = 0;
    dsb->state = STATE_STOPPED;
    dsb->playpos = 0;
    dsb->buf_mixpos = 0;
    dsb->device = device;
    dsb->ds3db = NULL;
    dsb->iks = NULL; /* FIXME? */
    dsb->secondary = NULL;

    /* variable sized struct so calculate size based on format */
    size = sizeof(WAVEFORMATEX) + pdsb->pwfx->cbSize;

    dsb->pwfx = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,size);
    if (dsb->pwfx == NULL) {
            WARN("out of memory\n");
            HeapFree(GetProcessHeap(),0,dsb->buffer);
            HeapFree(GetProcessHeap(),0,dsb);
            *ppdsb = NULL;
            return DSERR_OUTOFMEMORY;
    }

    CopyMemory(dsb->pwfx, pdsb->pwfx, size);

    InitializeCriticalSection(&(dsb->lock));
    dsb->lock.DebugInfo->Spare[0] = (DWORD_PTR)"DSOUNDBUFFER_lock";

    /* register buffer */
    hres = DirectSoundDevice_AddBuffer(device, dsb);
    if (hres != DS_OK) {
        dsb->lock.DebugInfo->Spare[0] = 0;
        DeleteCriticalSection(&(dsb->lock));
        HeapFree(GetProcessHeap(),0,dsb->buffer);
        HeapFree(GetProcessHeap(),0,dsb->pwfx);
        HeapFree(GetProcessHeap(),0,dsb);
        *ppdsb = 0;
    }

    *ppdsb = dsb;
    return hres;
}

/*******************************************************************************
 *          SecondaryBuffer
 */

static HRESULT WINAPI SecondaryBufferImpl_QueryInterface(
      LPDIRECTSOUNDBUFFER8 iface,REFIID riid,LPVOID *ppobj)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%s,%p)\n",This,debugstr_guid(riid),ppobj);

      return IDirectSoundBufferImpl_QueryInterface((LPDIRECTSOUNDBUFFER8)This->dsb,riid,ppobj);
}

static ULONG WINAPI SecondaryBufferImpl_AddRef(LPDIRECTSOUNDBUFFER8 iface)
{
    SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
    ULONG ref = InterlockedIncrement(&(This->ref));
    TRACE("(%p) ref was %ld\n", This, ref - 1);
    return ref;
}

static ULONG WINAPI SecondaryBufferImpl_Release(LPDIRECTSOUNDBUFFER8 iface)
{
    SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
    ULONG ref;
    TRACE("(%p)\n", This);
    ref = InterlockedDecrement(&(This->ref));
    TRACE("ref was %ld\n", ref + 1);

    if (!ref) {
        This->dsb->secondary = NULL;
        IDirectSoundBuffer_Release((LPDIRECTSOUNDBUFFER8)This->dsb);
        HeapFree(GetProcessHeap(), 0, This);
        TRACE("(%p) released\n", This);
    }
    return ref;
}

static HRESULT WINAPI SecondaryBufferImpl_GetCaps(
      LPDIRECTSOUNDBUFFER8 iface,LPDSBCAPS caps)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p)->(%p)\n",This,caps);

      return IDirectSoundBufferImpl_GetCaps((LPDIRECTSOUNDBUFFER8)This->dsb,caps);
}

static HRESULT WINAPI SecondaryBufferImpl_GetCurrentPosition(
      LPDIRECTSOUNDBUFFER8 iface,LPDWORD playpos,LPDWORD writepos)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p,%p)\n",This,playpos,writepos);

      return IDirectSoundBufferImpl_GetCurrentPosition((LPDIRECTSOUNDBUFFER8)This->dsb,playpos,writepos);
}

static HRESULT WINAPI SecondaryBufferImpl_GetFormat(
      LPDIRECTSOUNDBUFFER8 iface,LPWAVEFORMATEX lpwf,DWORD wfsize,LPDWORD wfwritten)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p,%ld,%p)\n",This,lpwf,wfsize,wfwritten);

      return IDirectSoundBufferImpl_GetFormat((LPDIRECTSOUNDBUFFER8)This->dsb,lpwf,wfsize,wfwritten);
}

static HRESULT WINAPI SecondaryBufferImpl_GetVolume(
      LPDIRECTSOUNDBUFFER8 iface,LPLONG vol)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,vol);

      return IDirectSoundBufferImpl_GetVolume((LPDIRECTSOUNDBUFFER8)This->dsb,vol);
}

static HRESULT WINAPI SecondaryBufferImpl_GetPan(
      LPDIRECTSOUNDBUFFER8 iface,LPLONG pan)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,pan);

      return IDirectSoundBufferImpl_GetPan((LPDIRECTSOUNDBUFFER8)This->dsb,pan);
}

static HRESULT WINAPI SecondaryBufferImpl_GetFrequency(
      LPDIRECTSOUNDBUFFER8 iface,LPDWORD freq)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,freq);

      return IDirectSoundBufferImpl_GetFrequency((LPDIRECTSOUNDBUFFER8)This->dsb,freq);
}

static HRESULT WINAPI SecondaryBufferImpl_GetStatus(
      LPDIRECTSOUNDBUFFER8 iface,LPDWORD status)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,status);

      return IDirectSoundBufferImpl_GetStatus((LPDIRECTSOUNDBUFFER8)This->dsb,status);
}

static HRESULT WINAPI SecondaryBufferImpl_Initialize(
      LPDIRECTSOUNDBUFFER8 iface,LPDIRECTSOUND dsound,LPCDSBUFFERDESC dbsd)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p,%p)\n",This,dsound,dbsd);

      return IDirectSoundBufferImpl_Initialize((LPDIRECTSOUNDBUFFER8)This->dsb,dsound,dbsd);
}

static HRESULT WINAPI SecondaryBufferImpl_Lock(
    LPDIRECTSOUNDBUFFER8 iface,
    DWORD writecursor,
    DWORD writebytes,
    LPVOID lplpaudioptr1,
    LPDWORD audiobytes1,
    LPVOID lplpaudioptr2,
    LPDWORD audiobytes2,
    DWORD dwFlags)
{
    SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
    TRACE("(%p,%ld,%ld,%p,%p,%p,%p,0x%08lx)\n",
        This,writecursor,writebytes,lplpaudioptr1,audiobytes1,lplpaudioptr2,audiobytes2,dwFlags);

    return IDirectSoundBufferImpl_Lock((LPDIRECTSOUNDBUFFER8)This->dsb,
        writecursor,writebytes,lplpaudioptr1,audiobytes1,lplpaudioptr2,audiobytes2,dwFlags);
}

static HRESULT WINAPI SecondaryBufferImpl_Play(
      LPDIRECTSOUNDBUFFER8 iface,DWORD reserved1,DWORD reserved2,DWORD flags)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%08lx,%08lx,%08lx)\n",This,reserved1,reserved2,flags);

      return IDirectSoundBufferImpl_Play((LPDIRECTSOUNDBUFFER8)This->dsb,reserved1,reserved2,flags);
}

static HRESULT WINAPI SecondaryBufferImpl_SetCurrentPosition(
      LPDIRECTSOUNDBUFFER8 iface,DWORD newpos)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%ld)\n",This,newpos);

      return IDirectSoundBufferImpl_SetCurrentPosition((LPDIRECTSOUNDBUFFER8)This->dsb,newpos);
}

static HRESULT WINAPI SecondaryBufferImpl_SetFormat(
      LPDIRECTSOUNDBUFFER8 iface,LPCWAVEFORMATEX wfex)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%p)\n",This,wfex);

      return IDirectSoundBufferImpl_SetFormat((LPDIRECTSOUNDBUFFER8)This->dsb,wfex);
}

static HRESULT WINAPI SecondaryBufferImpl_SetVolume(
      LPDIRECTSOUNDBUFFER8 iface,LONG vol)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%ld)\n",This,vol);

      return IDirectSoundBufferImpl_SetVolume((LPDIRECTSOUNDBUFFER8)This->dsb,vol);
}

static HRESULT WINAPI SecondaryBufferImpl_SetPan(
      LPDIRECTSOUNDBUFFER8 iface,LONG pan)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%ld)\n",This,pan);

      return IDirectSoundBufferImpl_SetPan((LPDIRECTSOUNDBUFFER8)This->dsb,pan);
}

static HRESULT WINAPI SecondaryBufferImpl_SetFrequency(
      LPDIRECTSOUNDBUFFER8 iface,DWORD freq)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%ld)\n",This,freq);

      return IDirectSoundBufferImpl_SetFrequency((LPDIRECTSOUNDBUFFER8)This->dsb,freq);
}

static HRESULT WINAPI SecondaryBufferImpl_Stop(LPDIRECTSOUNDBUFFER8 iface)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p)\n",This);

      return IDirectSoundBufferImpl_Stop((LPDIRECTSOUNDBUFFER8)This->dsb);
}

static HRESULT WINAPI SecondaryBufferImpl_Unlock(
    LPDIRECTSOUNDBUFFER8 iface,
    LPVOID lpvAudioPtr1,
    DWORD dwAudioBytes1,
    LPVOID lpvAudioPtr2,
    DWORD dwAudioBytes2)
{
    SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
    TRACE("(%p,%p,%ld,%p,%ld)\n",
        This, lpvAudioPtr1, dwAudioBytes1, lpvAudioPtr2, dwAudioBytes2);

    return IDirectSoundBufferImpl_Unlock((LPDIRECTSOUNDBUFFER8)This->dsb,
        lpvAudioPtr1,dwAudioBytes1,lpvAudioPtr2,dwAudioBytes2);
}

static HRESULT WINAPI SecondaryBufferImpl_Restore(
      LPDIRECTSOUNDBUFFER8 iface)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p)\n",This);

      return IDirectSoundBufferImpl_Restore((LPDIRECTSOUNDBUFFER8)This->dsb);
}

static HRESULT WINAPI SecondaryBufferImpl_SetFX(
      LPDIRECTSOUNDBUFFER8 iface,DWORD dwEffectsCount,LPDSEFFECTDESC pDSFXDesc,LPDWORD pdwResultCodes)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%lu,%p,%p)\n",This,dwEffectsCount,pDSFXDesc,pdwResultCodes);

      return IDirectSoundBufferImpl_SetFX((LPDIRECTSOUNDBUFFER8)This->dsb,dwEffectsCount,pDSFXDesc,pdwResultCodes);
}

static HRESULT WINAPI SecondaryBufferImpl_AcquireResources(
      LPDIRECTSOUNDBUFFER8 iface,DWORD dwFlags,DWORD dwEffectsCount,LPDWORD pdwResultCodes)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%08lu,%lu,%p)\n",This,dwFlags,dwEffectsCount,pdwResultCodes);

      return IDirectSoundBufferImpl_AcquireResources((LPDIRECTSOUNDBUFFER8)This->dsb,dwFlags,dwEffectsCount,pdwResultCodes);
}

static HRESULT WINAPI SecondaryBufferImpl_GetObjectInPath(
      LPDIRECTSOUNDBUFFER8 iface,REFGUID rguidObject,DWORD dwIndex,REFGUID rguidInterface,LPVOID* ppObject)
{
      SecondaryBufferImpl *This = (SecondaryBufferImpl *)iface;
      TRACE("(%p,%s,%lu,%s,%p)\n",This,debugstr_guid(rguidObject),dwIndex,debugstr_guid(rguidInterface),ppObject);

      return IDirectSoundBufferImpl_GetObjectInPath((LPDIRECTSOUNDBUFFER8)This->dsb,rguidObject,dwIndex,rguidInterface,ppObject);
}

static const IDirectSoundBuffer8Vtbl sbvt =
{
      SecondaryBufferImpl_QueryInterface,
      SecondaryBufferImpl_AddRef,
      SecondaryBufferImpl_Release,
      SecondaryBufferImpl_GetCaps,
      SecondaryBufferImpl_GetCurrentPosition,
      SecondaryBufferImpl_GetFormat,
      SecondaryBufferImpl_GetVolume,
      SecondaryBufferImpl_GetPan,
      SecondaryBufferImpl_GetFrequency,
      SecondaryBufferImpl_GetStatus,
      SecondaryBufferImpl_Initialize,
      SecondaryBufferImpl_Lock,
      SecondaryBufferImpl_Play,
      SecondaryBufferImpl_SetCurrentPosition,
      SecondaryBufferImpl_SetFormat,
      SecondaryBufferImpl_SetVolume,
      SecondaryBufferImpl_SetPan,
      SecondaryBufferImpl_SetFrequency,
      SecondaryBufferImpl_Stop,
      SecondaryBufferImpl_Unlock,
      SecondaryBufferImpl_Restore,
      SecondaryBufferImpl_SetFX,
      SecondaryBufferImpl_AcquireResources,
      SecondaryBufferImpl_GetObjectInPath
};

HRESULT SecondaryBufferImpl_Create(
      IDirectSoundBufferImpl *dsb,
      SecondaryBufferImpl **psb)
{
      SecondaryBufferImpl *sb;
      TRACE("(%p,%p)\n",dsb,psb);

      sb = HeapAlloc(GetProcessHeap(),HEAP_ZERO_MEMORY,sizeof(*sb));

      if (sb == 0) {
            WARN("out of memory\n");
            *psb = NULL;
            return DSERR_OUTOFMEMORY;
      }
      sb->ref = 0;
      sb->dsb = dsb;
      sb->lpVtbl = &sbvt;

      IDirectSoundBuffer8_AddRef((LPDIRECTSOUNDBUFFER8)dsb);
      *psb = sb;
      return S_OK;
}

static HRESULT SecondaryBufferImpl_Destroy(
    SecondaryBufferImpl *pdsb)
{
    TRACE("(%p)\n",pdsb);

    while (SecondaryBufferImpl_Release((LPDIRECTSOUNDBUFFER8)pdsb) > 0);

    return S_OK;
}

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