dlls/dsound/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 "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 %d\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 %d\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%08x,%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 %d 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,%d)\n",This,vol);

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

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

	/* **** */
	RtlAcquireResourceExclusive(&This->lock, TRUE);

	if (This->dsbd.dwFlags & DSBCAPS_CTRL3D) {
		oldVol = This->ds3db_lVolume;
		This->ds3db_lVolume = vol;
		if (vol != oldVol)
			/* recalc 3d volume, which in turn recalcs the pans */
			DSOUND_Calc3DBuffer(This);
	} 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");
		}
	}

	RtlReleaseResource(&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,%d)\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 = %d\n", freq);
		return DSERR_INVALIDPARAM;
	}

	/* **** */
	RtlAcquireResourceExclusive(&This->lock, TRUE);

	oldFreq = This->freq;
	This->freq = freq;
	if (freq != oldFreq) {
		This->freqAdjust = ((DWORD64)This->freq << DSOUND_FREQSHIFT) / This->device->pwfx->nSamplesPerSec;
		This->nAvgBytesPerSec = freq * This->pwfx->nBlockAlign;
		DSOUND_RecalcFormat(This);
		DSOUND_MixToTemporary(This, 0, This->buflen);
	}

	RtlReleaseResource(&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,%08x,%08x,%08x)\n",This,reserved1,reserved2,flags);

	/* **** */
	RtlAcquireResourceExclusive(&This->lock, TRUE);

	This->playflags = flags;
	if (This->state == STATE_STOPPED && !This->hwbuf) {
		This->leadin = TRUE;
		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;
	}

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

	return hres;
}

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

	/* **** */
	RtlAcquireResourceExclusive(&This->lock, TRUE);

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

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

	return hres;
}

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

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

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

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

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

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);

	RtlAcquireResourceShared(&This->lock, TRUE);
	if (This->hwbuf) {
		hres=IDsDriverBuffer_GetPosition(This->hwbuf,playpos,writepos);
		if (hres != DS_OK) {
		    WARN("IDsDriverBuffer_GetPosition failed\n");
		    return hres;
		}
	} else {
		DWORD pos = This->sec_mixpos;

		/* sanity */
		if (pos >= This->buflen){
			FIXME("Bad play position. playpos: %d, buflen: %d\n", pos, This->buflen);
			pos %= This->buflen;
		}

		if (playpos)
			*playpos = pos;
		if (writepos)
			*writepos = pos;
	}
	if (writepos && This->state != STATE_STOPPED && (!This->hwbuf || !(This->device->drvdesc.dwFlags & DSDDESC_DONTNEEDWRITELEAD))) {
		/* apply the documented 10ms lead to writepos */
		*writepos += This->writelead;
		*writepos %= This->buflen;
	}
	RtlReleaseResource(&This->lock);

	TRACE("playpos = %d, writepos = %d, buflen=%d (%p, time=%d)\n",
		playpos?*playpos:-1, writepos?*writepos:-1, This->buflen, This, GetTickCount());

	return DS_OK;
}

static HRESULT WINAPI IDirectSoundBufferImpl_GetStatus(
	LPDIRECTSOUNDBUFFER8 iface,LPDWORD status
) {
	IDirectSoundBufferImpl *This = (IDirectSoundBufferImpl *)iface;
	TRACE("(%p,%p), thread is %04x\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=%x\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,%d,%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");
            CopyMemory(lpwf,This->pwfx,wfsize);
            if (wfwritten)
                *wfwritten = wfsize;
            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,%d,%d,%p,%p,%p,%p,0x%08x) at %d\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: %u >= buflen: %u\n",
		     writecursor, This->buflen);
		return DSERR_INVALIDPARAM;
        }

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

	/* **** */
	RtlAcquireResourceShared(&This->lock, TRUE);

	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");
			RtlReleaseResource(&This->lock);
			return hres;
		}
	} else {
		if (writecursor+writebytes <= This->buflen) {
			*(LPBYTE*)lplpaudioptr1 = This->buffer->memory+writecursor;
			if (This->sec_mixpos >= writecursor && This->sec_mixpos < writecursor + writebytes && This->state == STATE_PLAYING)
				WARN("Overwriting mixing position, case 1\n");
			*audiobytes1 = writebytes;
			if (lplpaudioptr2)
				*(LPBYTE*)lplpaudioptr2 = NULL;
			if (audiobytes2)
				*audiobytes2 = 0;
			TRACE("Locked %p(%i bytes) and %p(%i bytes) writecursor=%d\n",
			  *(LPBYTE*)lplpaudioptr1, *audiobytes1, lplpaudioptr2 ? *(LPBYTE*)lplpaudioptr2 : NULL, audiobytes2 ? *audiobytes2: 0, writecursor);
			TRACE("->%d.0\n",writebytes);
		} else {
			DWORD remainder = writebytes + writecursor - This->buflen;
			*(LPBYTE*)lplpaudioptr1 = This->buffer->memory+writecursor;
			*audiobytes1 = This->buflen-writecursor;
			if (This->sec_mixpos >= writecursor && This->sec_mixpos < writecursor + writebytes && This->state == STATE_PLAYING)
				WARN("Overwriting mixing position, case 2\n");
			if (lplpaudioptr2)
				*(LPBYTE*)lplpaudioptr2 = This->buffer->memory;
			if (audiobytes2)
				*audiobytes2 = writebytes-(This->buflen-writecursor);
			if (audiobytes2 && This->sec_mixpos < remainder && This->state == STATE_PLAYING)
				WARN("Overwriting mixing position, case 3\n");
			TRACE("Locked %p(%i bytes) and %p(%i bytes) writecursor=%d\n", *(LPBYTE*)lplpaudioptr1, *audiobytes1, lplpaudioptr2 ? *(LPBYTE*)lplpaudioptr2 : NULL, audiobytes2 ? *audiobytes2: 0, writecursor);
		}
	}

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

	return DS_OK;
}

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

	/* **** */
	RtlAcquireResourceExclusive(&This->lock, TRUE);

	oldpos = This->sec_mixpos;

	/* start mixing from this new location instead */
	newpos %= This->buflen;
	newpos -= newpos%This->pwfx->nBlockAlign;
	This->sec_mixpos = newpos;

	/* at this point, do not attempt to reset buffers, mess with primary mix position,
           or anything like that to reduce latancy. The data already prebuffered cannot be changed */

	/* position HW buffer if applicable, else just start mixing from new location instead */
	if (This->hwbuf) {
		hres = IDsDriverBuffer_SetPosition(This->hwbuf, This->buf_mixpos);
		if (hres != DS_OK)
			WARN("IDsDriverBuffer_SetPosition failed\n");
	}
	else if (oldpos != newpos)
		/* FIXME: Perhaps add a call to DSOUND_MixToTemporary here? Not sure it's needed */
		This->buf_mixpos = DSOUND_secpos_to_bufpos(This, newpos, 0, NULL);

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

	return hres;
}

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

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

	if ((pan > DSBPAN_RIGHT) || (pan < DSBPAN_LEFT)) {
		WARN("invalid parameter: pan = %d\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;
	}

	/* **** */
	RtlAcquireResourceExclusive(&This->lock, TRUE);

	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");
		}
	}

	RtlReleaseResource(&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, *iter;
	HRESULT hres = DS_OK;

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

	/* **** */
	RtlAcquireResourceShared(&This->lock, TRUE);

	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");
	}

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

	if (!p2)
		x2 = 0;

	if (!This->hwbuf && (x1 || x2))
	{
		RtlAcquireResourceShared(&This->device->buffer_list_lock, TRUE);
		LIST_FOR_EACH_ENTRY(iter, &This->buffer->buffers, IDirectSoundBufferImpl, entry )
		{
			RtlAcquireResourceShared(&iter->lock, TRUE);
			if (x1)
				DSOUND_MixToTemporary(iter, (DWORD_PTR)p1 - (DWORD_PTR)iter->buffer->memory, x1);
			if (x2)
				DSOUND_MixToTemporary(iter, 0, x2);
			RtlReleaseResource(&iter->lock);
		}
		RtlReleaseResource(&This->device->buffer_list_lock);
	}

	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("-> %d\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,%u,%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,%08u,%u,%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,%u,%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;
	WARN("(%p) already initialized\n", This);
	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 = %d\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;

	/* According to windows, this is zero*/
	caps->dwUnlockTransferRate = 0;
	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 = %d\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 = !!(dsbd->dwFlags & DSBCAPS_LOCHARDWARE);
	TRACE("use_hw = %d, capf = 0x%08x, device->drvcaps.dwFlags = 0x%08x\n", use_hw, capf, device->drvcaps.dwFlags);
	if (use_hw && ((device->drvcaps.dwFlags & capf) != capf || !device->driver))
	{
		if (device->driver)
			WARN("Format not supported for hardware buffer\n");
		HeapFree(GetProcessHeap(),0,dsb->pwfx);
		HeapFree(GetProcessHeap(),0,dsb);
		*pdsb = NULL;
		if ((device->drvcaps.dwFlags & capf) != capf)
			return DSERR_BADFORMAT;
		return DSERR_GENERIC;
	}

	/* 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;
		}
	}

	/* Allocate the hardware buffer */
	if (use_hw) {
		err = IDsDriver_CreateSoundBuffer(device->driver,wfex,dsbd->dwFlags,0,
						  &(dsb->buflen),&(dsb->buffer->memory),
						  (LPVOID*)&(dsb->hwbuf));
		if (FAILED(err))
		{
			WARN("Failed to create hardware secondary buffer: %08x\n", err);
			if (device->drvdesc.dwFlags & DSDDESC_USESYSTEMMEMORY)
				HeapFree(GetProcessHeap(),0,dsb->buffer->memory);
			HeapFree(GetProcessHeap(),0,dsb->buffer);
			HeapFree(GetProcessHeap(),0,dsb->pwfx);
			HeapFree(GetProcessHeap(),0,dsb);
			*pdsb = NULL;
			return DSERR_GENERIC;
		}
	}

	dsb->buffer->ref = 1;
	list_init(&dsb->buffer->buffers);
	list_add_head(&dsb->buffer->buffers, &dsb->entry);
	FillMemory(dsb->buffer->memory, dsb->buflen, dsbd->lpwfxFormat->wBitsPerSample == 8 ? 128 : 0);

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

	dsb->freqAdjust = ((DWORD64)dsb->freq << DSOUND_FREQSHIFT) / device->pwfx->nSamplesPerSec;
	dsb->nAvgBytesPerSec = dsb->freq *
		dsbd->lpwfxFormat->nBlockAlign;

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

	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));

	RtlInitializeResource(&dsb->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);
			RtlDeleteResource(&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 (FAILED(hres)) {
            WARN("IDsDriver_DuplicateSoundBuffer failed (%08x)\n", hres);
            HeapFree(GetProcessHeap(),0,dsb);
            *ppdsb = NULL;
            return hres;
        }
    }

    dsb->buffer->ref++;
    list_add_head(&dsb->buffer->buffers, &dsb->entry);
    dsb->ref = 0;
    dsb->state = STATE_STOPPED;
    dsb->buf_mixpos = dsb->sec_mixpos = 0;
    dsb->device = device;
    dsb->ds3db = NULL;
    dsb->iks = NULL; /* FIXME? */
    dsb->secondary = NULL;
    dsb->tmp_buffer = NULL;
    DSOUND_RecalcFormat(dsb);
    DSOUND_MixToTemporary(dsb, 0, dsb->buflen);

    /* 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);

    RtlInitializeResource(&dsb->lock);

    /* register buffer */
    hres = DirectSoundDevice_AddBuffer(device, dsb);
    if (hres != DS_OK) {
        RtlDeleteResource(&dsb->lock);
        HeapFree(GetProcessHeap(),0,dsb->tmp_buffer);
        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 %d\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 %d\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,%d,%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,%d,%d,%p,%p,%p,%p,0x%08x)\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,%08x,%08x,%08x)\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,%d)\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,%d)\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,%d)\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,%d)\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,%d,%p,%d)\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,%u,%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,%08u,%u,%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,%u,%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;
}