wine/dlls/dmime/performance.c

/* IDirectMusicPerformance Implementation
 *
 * Copyright (C) 2003-2004 Rok Mandeljc
 * Copyright (C) 2003-2004 Raphael Junqueira
 *
 * This program 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 program 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 program; if not, write to the Free Software
 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
 */

#include "dmime_private.h"

WINE_DEFAULT_DEBUG_CHANNEL(dmime);

typedef struct IDirectMusicPerformance8Impl {
    IDirectMusicPerformance8 IDirectMusicPerformance8_iface;
    LONG ref;
    /* IDirectMusicPerformanceImpl fields */
    IDirectMusic8 *pDirectMusic;
    IDirectSound *pDirectSound;
    IDirectMusicGraph *pToolGraph;
    DMUS_AUDIOPARAMS pParams;
    /* global parameters */
    BOOL fAutoDownload;
    char cMasterGrooveLevel;
    float fMasterTempo;
    long lMasterVolume;
    /* performance channels */
    DMUSIC_PRIVATE_PCHANNEL PChannel[32];
    /* IDirectMusicPerformance8Impl fields */
    IDirectMusicAudioPath *pDefaultPath;
    HANDLE hNotification;
    REFERENCE_TIME rtMinimum;
    REFERENCE_TIME rtLatencyTime;
    DWORD dwBumperLength;
    DWORD dwPrepareTime;
    /** Message Processing */
    HANDLE procThread;
    DWORD procThreadId;
    REFERENCE_TIME procThreadStartTime;
    BOOL procThreadTicStarted;
    CRITICAL_SECTION safe;
    struct DMUS_PMSGItem *head;
    struct DMUS_PMSGItem *imm_head;
} IDirectMusicPerformance8Impl;

typedef struct DMUS_PMSGItem DMUS_PMSGItem;
struct DMUS_PMSGItem {
  DMUS_PMSGItem* next;
  DMUS_PMSGItem* prev;

  REFERENCE_TIME rtItemTime;
  BOOL bInUse;
  DWORD cb;
  DMUS_PMSG pMsg;
};

#define DMUS_PMSGToItem(pMSG)   ((DMUS_PMSGItem*) (((unsigned char*) pPMSG) -  offsetof(DMUS_PMSGItem, pMsg)))
#define DMUS_ItemToPMSG(pItem)  (&(pItem->pMsg))
#define DMUS_ItemRemoveFromQueue(This,pItem) \
{\
  if (pItem->prev) pItem->prev->next = pItem->next;\
  if (pItem->next) pItem->next->prev = pItem->prev;\
  if (This->head == pItem) This->head = pItem->next;\
  if (This->imm_head == pItem) This->imm_head = pItem->next;\
  pItem->bInUse = FALSE;\
}

#define PROCESSMSG_START           (WM_APP + 0)
#define PROCESSMSG_EXIT            (WM_APP + 1)
#define PROCESSMSG_REMOVE          (WM_APP + 2)
#define PROCESSMSG_ADD             (WM_APP + 4)


static DMUS_PMSGItem* ProceedMsg(IDirectMusicPerformance8Impl* This, DMUS_PMSGItem* cur) {
  if (cur->pMsg.dwType == DMUS_PMSGT_NOTIFICATION) {
    SetEvent(This->hNotification);
  }	
  DMUS_ItemRemoveFromQueue(This, cur);
  switch (cur->pMsg.dwType) {
  case DMUS_PMSGT_WAVE:
  case DMUS_PMSGT_TEMPO:   
  case DMUS_PMSGT_STOP:
  default:
    FIXME("Unhandled PMsg Type: 0x%x\n", cur->pMsg.dwType);
    break;
  }
  return cur;
}

static DWORD WINAPI ProcessMsgThread(LPVOID lpParam) {
  IDirectMusicPerformance8Impl* This = lpParam;
  DWORD timeOut = INFINITE;
  MSG msg;
  HRESULT hr;
  REFERENCE_TIME rtCurTime;
  DMUS_PMSGItem* it = NULL;
  DMUS_PMSGItem* cur = NULL;
  DMUS_PMSGItem* it_next = NULL;

  while (TRUE) {
    DWORD dwDec = This->rtLatencyTime + This->dwBumperLength;

    if (timeOut > 0) MsgWaitForMultipleObjects(0, NULL, FALSE, timeOut, QS_POSTMESSAGE|QS_SENDMESSAGE|QS_TIMER);
    timeOut = INFINITE;

    EnterCriticalSection(&This->safe);
    hr = IDirectMusicPerformance8_GetTime(&This->IDirectMusicPerformance8_iface, &rtCurTime, NULL);
    if (FAILED(hr)) {
      goto outrefresh;
    }
    
    for (it = This->imm_head; NULL != it; ) {
      it_next = it->next;
      cur = ProceedMsg(This, it);  
      HeapFree(GetProcessHeap(), 0, cur); 
      it = it_next;
    }

    for (it = This->head; NULL != it && it->rtItemTime < rtCurTime + dwDec; ) {
      it_next = it->next;
      cur = ProceedMsg(This, it);
      HeapFree(GetProcessHeap(), 0, cur);
      it = it_next;
    }
    if (NULL != it) {
      timeOut = ( it->rtItemTime - rtCurTime ) + This->rtLatencyTime;
    }

outrefresh:
    LeaveCriticalSection(&This->safe);
    
    while (PeekMessageA(&msg, NULL, 0, 0, PM_REMOVE)) {
      /** if hwnd we suppose that is a windows event ... */
      if  (NULL != msg.hwnd) {
	TranslateMessage(&msg);
	DispatchMessageA(&msg);
      } else {
	switch (msg.message) {	    
	case WM_QUIT:
	case PROCESSMSG_EXIT:
	  goto outofthread;
	case PROCESSMSG_START:
	  break;
	case PROCESSMSG_ADD:
	  break;
	case PROCESSMSG_REMOVE:
	  break;
	default:
	  ERR("Unhandled message %u. Critical Path\n", msg.message);
	  break;
	}
      }
    }

    /** here we should run a little of current AudioPath */

  }

outofthread:
  TRACE("(%p): Exiting\n", This);
  
  return 0;
}

static BOOL PostMessageToProcessMsgThread(IDirectMusicPerformance8Impl* This, UINT iMsg) {
  if (FALSE == This->procThreadTicStarted && PROCESSMSG_EXIT != iMsg) {
    BOOL res;
    This->procThread = CreateThread(NULL, 0, ProcessMsgThread, This, 0, &This->procThreadId);
    if (NULL == This->procThread) return FALSE;
    SetThreadPriority(This->procThread, THREAD_PRIORITY_TIME_CRITICAL);
    This->procThreadTicStarted = TRUE;
    while(1) {
      res = PostThreadMessageA(This->procThreadId, iMsg, 0, 0);
      /* Let the thread creates its message queue (with MsgWaitForMultipleObjects call) by yielding and retrying */
      if (!res && (GetLastError() == ERROR_INVALID_THREAD_ID))
	Sleep(0);
      else
	break;
    }
    return res;
  }
  return PostThreadMessageA(This->procThreadId, iMsg, 0, 0);
}

static inline IDirectMusicPerformance8Impl *impl_from_IDirectMusicPerformance8(IDirectMusicPerformance8 *iface)
{
    return CONTAINING_RECORD(iface, IDirectMusicPerformance8Impl, IDirectMusicPerformance8_iface);
}

/* IDirectMusicPerformance8 IUnknown part: */
static HRESULT WINAPI IDirectMusicPerformance8Impl_QueryInterface(IDirectMusicPerformance8 *iface,
        REFIID riid, void **ppv)
{
  TRACE("(%p, %s,%p)\n", iface, debugstr_dmguid(riid), ppv);

  if (IsEqualIID (riid, &IID_IUnknown) ||
      IsEqualIID (riid, &IID_IDirectMusicPerformance) ||
      IsEqualIID (riid, &IID_IDirectMusicPerformance2) ||
      IsEqualIID (riid, &IID_IDirectMusicPerformance8)) {
    *ppv = iface;
    IUnknown_AddRef(iface);
    return S_OK;
  }

  WARN("(%p, %s,%p): not found\n", iface, debugstr_dmguid(riid), ppv);
  return E_NOINTERFACE;
}

static ULONG WINAPI IDirectMusicPerformance8Impl_AddRef(IDirectMusicPerformance8 *iface)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
  ULONG ref = InterlockedIncrement(&This->ref);

  TRACE("(%p): AddRef from %d\n", This, ref - 1);

  DMIME_LockModule();

  return ref;
}

static ULONG WINAPI IDirectMusicPerformance8Impl_Release(IDirectMusicPerformance8 *iface)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
  ULONG ref = InterlockedDecrement(&This->ref);

  TRACE("(%p): ReleaseRef to %d\n", This, ref);
  
  if (ref == 0) {
    This->safe.DebugInfo->Spare[0] = 0;
    DeleteCriticalSection(&This->safe);
    HeapFree(GetProcessHeap(), 0, This);
  }

  DMIME_UnlockModule();

  return ref;
}

/* IDirectMusicPerformanceImpl IDirectMusicPerformance Interface part: */
static HRESULT WINAPI IDirectMusicPerformance8Impl_Init(IDirectMusicPerformance8 *iface,
        IDirectMusic **ppDirectMusic, IDirectSound *pDirectSound, HWND hWnd)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(iface = %p, dmusic = %p, dsound = %p, hwnd = %p)\n", This, ppDirectMusic, pDirectSound, hWnd);
 	if (This->pDirectMusic || This->pDirectSound)
	  return DMUS_E_ALREADY_INITED;
	
	if (NULL == hWnd) {
	  hWnd = GetForegroundWindow();
	}

	if (NULL != pDirectSound) {
	  This->pDirectSound = pDirectSound;
	  IDirectSound_AddRef(This->pDirectSound);
	} else {
	  DirectSoundCreate8(NULL, (LPDIRECTSOUND8*) &This->pDirectSound, NULL);
	  if (!This->pDirectSound) return DSERR_NODRIVER;

	  if (NULL != hWnd) {
	    IDirectSound8_SetCooperativeLevel(This->pDirectSound, hWnd, DSSCL_PRIORITY);
	  } else {
	    /* how to get the ForeGround window handle ? */
            /*IDirectSound8_SetCooperativeLevel(This->pDirectSound, hWnd, DSSCL_PRIORITY);*/
	  }
	}

	if (NULL != ppDirectMusic && NULL != *ppDirectMusic) {
	  /* app creates it's own dmusic object and gives it to performance */
	  This->pDirectMusic = (IDirectMusic8*) *ppDirectMusic;
	  IDirectMusic8_AddRef(This->pDirectMusic);
	} else {
        HRESULT hr;
        /* App enables the performance to initialize itself and needs a pointer to object */
        hr = CoCreateInstance(&CLSID_DirectMusic, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusic8, (void**)&This->pDirectMusic);
        if (FAILED(hr))
            return hr;
        if (ppDirectMusic) {
            *ppDirectMusic = (LPDIRECTMUSIC)This->pDirectMusic;
            IDirectMusic8_AddRef((LPDIRECTMUSIC8)*ppDirectMusic);
        }
    }

    return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_PlaySegment(IDirectMusicPerformance8 *iface,
        IDirectMusicSegment *pSegment, DWORD dwFlags, __int64 i64StartTime,
        IDirectMusicSegmentState **ppSegmentState)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, %d, 0x%s, %p): stub\n", This, pSegment, dwFlags,
	    wine_dbgstr_longlong(i64StartTime), ppSegmentState);
	if (ppSegmentState)
	  return DMUSIC_CreateDirectMusicSegmentStateImpl(&IID_IDirectMusicSegmentState, (LPVOID*)ppSegmentState, NULL);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_Stop(IDirectMusicPerformance8 *iface,
        IDirectMusicSegment *pSegment, IDirectMusicSegmentState *pSegmentState, MUSIC_TIME mtTime,
        DWORD dwFlags)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, %p, %d, %d): stub\n", This, pSegment, pSegmentState, mtTime, dwFlags);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetSegmentState(IDirectMusicPerformance8 *iface,
        IDirectMusicSegmentState **ppSegmentState, MUSIC_TIME mtTime)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p,%p, %d): stub\n", This, ppSegmentState, mtTime);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetPrepareTime(IDirectMusicPerformance8 *iface,
        DWORD dwMilliSeconds)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  TRACE("(%p, %d)\n", This, dwMilliSeconds);
  This->dwPrepareTime = dwMilliSeconds;
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetPrepareTime(IDirectMusicPerformance8 *iface,
        DWORD *pdwMilliSeconds)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  TRACE("(%p, %p)\n", This, pdwMilliSeconds);
  if (NULL == pdwMilliSeconds) {
    return E_POINTER;
  }
  *pdwMilliSeconds = This->dwPrepareTime;
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetBumperLength(IDirectMusicPerformance8 *iface,
        DWORD dwMilliSeconds)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  TRACE("(%p, %d)\n", This, dwMilliSeconds);
  This->dwBumperLength =  dwMilliSeconds;
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetBumperLength(IDirectMusicPerformance8 *iface,
        DWORD *pdwMilliSeconds)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  TRACE("(%p, %p)\n", This, pdwMilliSeconds);
  if (NULL == pdwMilliSeconds) {
    return E_POINTER;
  }
  *pdwMilliSeconds = This->dwBumperLength;
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SendPMsg(IDirectMusicPerformance8 *iface,
        DMUS_PMSG *pPMSG)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
  DMUS_PMSGItem* pItem = NULL;
  DMUS_PMSGItem* it = NULL;
  DMUS_PMSGItem* prev_it = NULL;
  DMUS_PMSGItem** queue = NULL;

  FIXME("(%p, %p): stub\n", This, pPMSG);
	 
  if (NULL == pPMSG) {
    return E_POINTER;
  }
  pItem = DMUS_PMSGToItem(pPMSG);
  if (NULL == pItem) {
    return E_POINTER;
  }
  if (pItem->bInUse) {
    return DMUS_E_ALREADY_SENT;
  }
  
  /* TODO: Valid Flags */
  /* TODO: DMUS_PMSGF_MUSICTIME */
  pItem->rtItemTime = pPMSG->rtTime;

  if (pPMSG->dwFlags & DMUS_PMSGF_TOOL_IMMEDIATE) {
    queue = &This->imm_head;
  } else {
    queue = &This->head;
  }

  EnterCriticalSection(&This->safe);
  for (it = *queue; NULL != it && it->rtItemTime < pItem->rtItemTime; it = it->next) {
    prev_it = it;
  }
  if (NULL == prev_it) {
    pItem->prev = NULL;
    if (NULL != *queue) pItem->next = (*queue)->next;
    /*assert( NULL == pItem->next->prev );*/
    if (NULL != pItem->next) pItem->next->prev = pItem;
    *queue = pItem;
  } else {
    pItem->prev = prev_it;
    pItem->next = prev_it->next;
    prev_it->next = pItem;
    if (NULL != pItem->next) pItem->next->prev = pItem;
  } 
  LeaveCriticalSection(&This->safe);

  /** now in use, prevent from stupid Frees */
  pItem->bInUse = TRUE;
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_MusicToReferenceTime(IDirectMusicPerformance8 *iface,
        MUSIC_TIME mtTime, REFERENCE_TIME *prtTime)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %d, %p): stub\n", This, mtTime, prtTime);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_ReferenceToMusicTime(IDirectMusicPerformance8 *iface,
        REFERENCE_TIME rtTime, MUSIC_TIME *pmtTime)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, 0x%s, %p): stub\n", This, wine_dbgstr_longlong(rtTime), pmtTime);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_IsPlaying(IDirectMusicPerformance8 *iface,
        IDirectMusicSegment *pSegment, IDirectMusicSegmentState *pSegState)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, %p): stub\n", This, pSegment, pSegState);
	return S_FALSE;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetTime(IDirectMusicPerformance8 *iface,
        REFERENCE_TIME *prtNow, MUSIC_TIME *pmtNow)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
  HRESULT hr = S_OK;
  REFERENCE_TIME rtCur = 0;

  /*TRACE("(%p, %p, %p)\n", This, prtNow, pmtNow); */
  if (This->procThreadTicStarted) {
    rtCur = ((REFERENCE_TIME) GetTickCount() * 10000) - This->procThreadStartTime;
  } else {
    /*return DMUS_E_NO_MASTER_CLOCK;*/
  }
  if (NULL != prtNow) {
    *prtNow = rtCur;
  }
  if (NULL != pmtNow) {
    hr = IDirectMusicPerformance8_ReferenceToMusicTime(iface, rtCur, pmtNow);
  }
  return hr;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_AllocPMsg(IDirectMusicPerformance8 *iface,
        ULONG cb, DMUS_PMSG **ppPMSG)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
  DMUS_PMSGItem* pItem = NULL;
  
  FIXME("(%p, %d, %p): stub\n", This, cb, ppPMSG);
	
  if (sizeof(DMUS_PMSG) > cb) {
    return E_INVALIDARG;
  }
  if (NULL == ppPMSG) {
    return E_POINTER;
  }
  pItem = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, cb - sizeof(DMUS_PMSG)  + sizeof(DMUS_PMSGItem));
  if (NULL == pItem) {
    return E_OUTOFMEMORY;
  }
  pItem->pMsg.dwSize = cb;
  *ppPMSG = DMUS_ItemToPMSG(pItem);
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_FreePMsg(IDirectMusicPerformance8 *iface,
        DMUS_PMSG *pPMSG)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
  DMUS_PMSGItem* pItem = NULL;
  
  FIXME("(%p, %p): stub\n", This, pPMSG);
  
  if (NULL == pPMSG) {
    return E_POINTER;
  }
  pItem = DMUS_PMSGToItem(pPMSG);
  if (NULL == pItem) {
    return E_POINTER;
  }
  if (pItem->bInUse) {
    /** prevent for freeing PMsg in queue (ie to be processed) */
    return DMUS_E_CANNOT_FREE;
  }
  /** now we can remove it safely */
  EnterCriticalSection(&This->safe);
  DMUS_ItemRemoveFromQueue( This, pItem );
  LeaveCriticalSection(&This->safe);

  /** TODO: see if we should Release the pItem->pMsg->punkUser and others Interfaces */
  HeapFree(GetProcessHeap(), 0, pItem);  
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetGraph(IDirectMusicPerformance8 *iface,
        IDirectMusicGraph **ppGraph)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  FIXME("(%p, %p): to check\n", This, ppGraph);
  if (NULL != This->pToolGraph) {
    *ppGraph = This->pToolGraph;
    IDirectMusicGraph_AddRef(*ppGraph);
  } else {
    return E_FAIL;
  }
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetGraph(IDirectMusicPerformance8 *iface,
        IDirectMusicGraph *pGraph)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  FIXME("(%p, %p): to check\n", This, pGraph);
  
  if (NULL != This->pToolGraph) {
    /* Todo clean buffers and tools before */
    IDirectMusicGraph_Release(This->pToolGraph);
  }
  This->pToolGraph = pGraph;
  if (NULL != This->pToolGraph) {
    IDirectMusicGraph_AddRef(This->pToolGraph);
  }
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetNotificationHandle(IDirectMusicPerformance8 *iface,
        HANDLE hNotification, REFERENCE_TIME rtMinimum)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  FIXME("(%p, %p, 0x%s): stub\n", This, hNotification, wine_dbgstr_longlong(rtMinimum));
  This->hNotification = hNotification;
  if (rtMinimum) This->rtMinimum = rtMinimum;
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetNotificationPMsg(IDirectMusicPerformance8 *iface,
        DMUS_NOTIFICATION_PMSG **ppNotificationPMsg)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  FIXME("(%p, %p): stub\n", This, ppNotificationPMsg);
  if (NULL == ppNotificationPMsg) {
    return E_POINTER;
  }
  
  

  return S_FALSE;
  /*return S_OK;*/
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_AddNotificationType(IDirectMusicPerformance8 *iface,
        REFGUID rguidNotificationType)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %s): stub\n", This, debugstr_dmguid(rguidNotificationType));
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_RemoveNotificationType(IDirectMusicPerformance8 *iface,
        REFGUID rguidNotificationType)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %s): stub\n", This, debugstr_dmguid(rguidNotificationType));
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_AddPort(IDirectMusicPerformance8 *iface,
        IDirectMusicPort *pPort)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
	HRESULT hr = E_FAIL;

	FIXME("(%p, %p): stub\n", This, pPort);
	if (!This->pDirectMusic || !This->pDirectSound) return DMUS_E_NOT_INIT;
	if (NULL == pPort) {
	  GUID port_guid;
	  IDirectMusicPort* pDefaultPort = NULL;
	  DMUS_PORTPARAMS params;
	  int i, j;
	  hr = IDirectMusic8_GetDefaultPort(This->pDirectMusic, &port_guid);
	  if (FAILED(hr)) return hr;
	  ZeroMemory(&params, sizeof(params)); 
	  params.dwSize = sizeof(params);
	  params.dwValidParams = DMUS_PORTPARAMS_CHANNELGROUPS | DMUS_PORTPARAMS_SHARE;
	  params.dwChannelGroups = 1;
	  params.fShare = TRUE;
	  hr = IDirectMusic8_CreatePort(This->pDirectMusic, &port_guid, &params, &pDefaultPort, NULL);
	  if (FAILED(hr)) return hr;
	  hr = IDirectMusicPort_Activate(pDefaultPort, TRUE);
	  if (FAILED(hr)) { IDirectMusicPort_Release(pDefaultPort); return hr; }
	  j = 0;
	  for (i = 0; i < 16; ++i) {
	    if (NULL == This->PChannel[i].port) {
	      This->PChannel[i].port = pPort; 
	      This->PChannel[i].group = 0; 
	      This->PChannel[i].channel = j; /* FIXME: should this be assigned? */
	      j++;
	    }
	  }
	} else {
	  IDirectMusicPort_AddRef(pPort);	  
	}
	/**
	 * We should remember added Ports (for example using a list)
	 * and control if Port is registered for each api who use ports
	 */
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_RemovePort(IDirectMusicPerformance8 *iface,
        IDirectMusicPort *pPort)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p): stub\n", This, pPort);
	IDirectMusicPort_Release (pPort);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_AssignPChannelBlock(IDirectMusicPerformance8 *iface,
        DWORD dwBlockNum, IDirectMusicPort *pPort, DWORD dwGroup)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
	int i, j, range /* min value in range */;

	FIXME("(%p, %d, %p, %d): semi-stub\n", This, dwBlockNum, pPort, dwGroup-1);
	if (NULL == pPort) return E_POINTER;

	range = 16 * dwBlockNum;
	j = 0;
	for (i = range; i < range+16; i++) {
		/*TRACE("Setting PChannel[%i] to port %p, group %ld, MIDI port %i\n", i, pPort, dwGroup-1, j); */
		This->PChannel[i].port = pPort; 
		This->PChannel[i].group = dwGroup - 1; /* first index is always zero */
		This->PChannel[i].channel = j; /* FIXME: should this be assigned? */
		j++;
	}
	/*if (dwGroup > 2) return S_FALSE;*/

	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_AssignPChannel(IDirectMusicPerformance8 *iface,
        DWORD PChannel, IDirectMusicPort *port, DWORD group, DWORD MChannel)
{
    IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

    TRACE("(%p)->(%d, %p, %d, %d)\n", This, PChannel, port, group, MChannel);

    if (!port)
        return E_POINTER;

    This->PChannel[PChannel].port = port;
    This->PChannel[PChannel].group = group;
    This->PChannel[PChannel].channel = MChannel;

    return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_PChannelInfo(IDirectMusicPerformance8 *iface,
        DWORD PChannel, IDirectMusicPort **port, DWORD *group, DWORD *MChannel)
{
    IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
    DMUS_PORTPARAMS8 port_params;
    GUID default_port;

    FIXME("(%p)->(%d, %p, %p, %p): stub\n", This, PChannel, port, group, MChannel);

    port_params.dwSize = sizeof(DMUS_PORTPARAMS8);
    port_params.dwValidParams = 0;
    IDirectMusic8_GetDefaultPort(This->pDirectMusic, &default_port);
    IDirectMusic8_CreatePort(This->pDirectMusic, &default_port, &port_params, port, NULL);

    return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_DownloadInstrument(IDirectMusicPerformance8 *iface,
        IDirectMusicInstrument *pInst, DWORD dwPChannel,
        IDirectMusicDownloadedInstrument **ppDownInst, DMUS_NOTERANGE *pNoteRanges,
        DWORD dwNumNoteRanges, IDirectMusicPort **ppPort, DWORD *pdwGroup, DWORD *pdwMChannel)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, %d, %p, %p, %d, %p, %p, %p): stub\n", This, pInst, dwPChannel, ppDownInst, pNoteRanges, dwNumNoteRanges, ppPort, pdwGroup, pdwMChannel);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_Invalidate(IDirectMusicPerformance8 *iface,
        MUSIC_TIME mtTime, DWORD dwFlags)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %d, %d): stub\n", This, mtTime, dwFlags);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetParam(IDirectMusicPerformance8 *iface,
        REFGUID rguidType, DWORD dwGroupBits, DWORD dwIndex, MUSIC_TIME mtTime,
        MUSIC_TIME *pmtNext, void *pParam)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %s, %d, %d, %d, %p, %p): stub\n", This, debugstr_dmguid(rguidType), dwGroupBits, dwIndex, mtTime, pmtNext, pParam);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetParam(IDirectMusicPerformance8 *iface,
        REFGUID rguidType, DWORD dwGroupBits, DWORD dwIndex, MUSIC_TIME mtTime, void *pParam)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %s, %d, %d, %d, %p): stub\n", This, debugstr_dmguid(rguidType), dwGroupBits, dwIndex, mtTime, pParam);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetGlobalParam(IDirectMusicPerformance8 *iface,
        REFGUID rguidType, void *pParam, DWORD dwSize)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	TRACE("(%p, %s, %p, %d): stub\n", This, debugstr_dmguid(rguidType), pParam, dwSize);
	
	if (IsEqualGUID (rguidType, &GUID_PerfAutoDownload))
		memcpy(pParam, &This->fAutoDownload, sizeof(This->fAutoDownload));
	if (IsEqualGUID (rguidType, &GUID_PerfMasterGrooveLevel))
		memcpy(pParam, &This->cMasterGrooveLevel, sizeof(This->cMasterGrooveLevel));
	if (IsEqualGUID (rguidType, &GUID_PerfMasterTempo))
		memcpy(pParam, &This->fMasterTempo, sizeof(This->fMasterTempo));
	if (IsEqualGUID (rguidType, &GUID_PerfMasterVolume))
		memcpy(pParam, &This->lMasterVolume, sizeof(This->lMasterVolume));

	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetGlobalParam(IDirectMusicPerformance8 *iface,
        REFGUID rguidType, void *pParam, DWORD dwSize)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	TRACE("(%p, %s, %p, %d)\n", This, debugstr_dmguid(rguidType), pParam, dwSize);
	
	if (IsEqualGUID (rguidType, &GUID_PerfAutoDownload)) {
		memcpy(&This->fAutoDownload, pParam, dwSize);
		TRACE("=> AutoDownload set to %d\n", This->fAutoDownload);
	}
	if (IsEqualGUID (rguidType, &GUID_PerfMasterGrooveLevel)) {
		memcpy(&This->cMasterGrooveLevel, pParam, dwSize);
		TRACE("=> MasterGrooveLevel set to %i\n", This->cMasterGrooveLevel);
	}
	if (IsEqualGUID (rguidType, &GUID_PerfMasterTempo)) {
		memcpy(&This->fMasterTempo, pParam, dwSize);
		TRACE("=> MasterTempo set to %f\n", This->fMasterTempo);
	}
	if (IsEqualGUID (rguidType, &GUID_PerfMasterVolume)) {
		memcpy(&This->lMasterVolume, pParam, dwSize);
		TRACE("=> MasterVolume set to %li\n", This->lMasterVolume);
	}

	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetLatencyTime(IDirectMusicPerformance8 *iface,
        REFERENCE_TIME *prtTime)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	TRACE("(%p, %p): stub\n", This, prtTime);
	*prtTime = This->rtLatencyTime;
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetQueueTime(IDirectMusicPerformance8 *iface,
        REFERENCE_TIME *prtTime)

{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p): stub\n", This, prtTime);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_AdjustTime(IDirectMusicPerformance8 *iface,
        REFERENCE_TIME rtAmount)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, 0x%s): stub\n", This, wine_dbgstr_longlong(rtAmount));
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_CloseDown(IDirectMusicPerformance8 *iface)
{
  IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

  FIXME("(%p): stub\n", This);
  if (PostMessageToProcessMsgThread(This, PROCESSMSG_EXIT)) {
    WaitForSingleObject(This->procThread, INFINITE);
    This->procThreadTicStarted = FALSE;
    CloseHandle(This->procThread);
  }
  if (NULL != This->pDirectSound) {
    IDirectSound_Release(This->pDirectSound);
    This->pDirectSound = NULL;
  }
  if (NULL != This->pDirectMusic) {
    IDirectMusic8_Release(This->pDirectMusic);
    This->pDirectMusic = NULL;
  }
  return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetResolvedTime(IDirectMusicPerformance8 *iface,
        REFERENCE_TIME rtTime, REFERENCE_TIME *prtResolved, DWORD dwTimeResolveFlags)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, 0x%s, %p, %d): stub\n", This, wine_dbgstr_longlong(rtTime),
	    prtResolved, dwTimeResolveFlags);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_MIDIToMusic(IDirectMusicPerformance8 *iface,
        BYTE bMIDIValue, DMUS_CHORD_KEY *pChord, BYTE bPlayMode, BYTE bChordLevel,
        WORD *pwMusicValue)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %d, %p, %d, %d, %p): stub\n", This, bMIDIValue, pChord, bPlayMode, bChordLevel, pwMusicValue);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_MusicToMIDI(IDirectMusicPerformance8 *iface,
        WORD wMusicValue, DMUS_CHORD_KEY *pChord, BYTE bPlayMode, BYTE bChordLevel,
        BYTE *pbMIDIValue)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %d, %p, %d, %d, %p): stub\n", This, wMusicValue, pChord, bPlayMode, bChordLevel, pbMIDIValue);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_TimeToRhythm(IDirectMusicPerformance8 *iface,
        MUSIC_TIME mtTime, DMUS_TIMESIGNATURE *pTimeSig, WORD *pwMeasure, BYTE *pbBeat,
        BYTE *pbGrid, short *pnOffset)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %d, %p, %p, %p, %p, %p): stub\n", This, mtTime, pTimeSig, pwMeasure, pbBeat, pbGrid, pnOffset);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_RhythmToTime(IDirectMusicPerformance8 *iface,
        WORD wMeasure, BYTE bBeat, BYTE bGrid, short nOffset, DMUS_TIMESIGNATURE *pTimeSig,
        MUSIC_TIME *pmtTime)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %d, %d, %d, %i, %p, %p): stub\n", This, wMeasure, bBeat, bGrid, nOffset, pTimeSig, pmtTime);
	return S_OK;
}

/* IDirectMusicPerformance8 Interface part follow: */
static HRESULT WINAPI IDirectMusicPerformance8Impl_InitAudio(IDirectMusicPerformance8 *iface,
        IDirectMusic **ppDirectMusic, IDirectSound **ppDirectSound, HWND hWnd,
        DWORD dwDefaultPathType, DWORD dwPChannelCount, DWORD dwFlags, DMUS_AUDIOPARAMS* pParams)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
	IDirectSound* dsound = NULL;
	HRESULT hr = S_OK;

	FIXME("(%p, %p, %p, %p, %x, %u, %x, %p): to check\n", This, ppDirectMusic, ppDirectSound, hWnd, dwDefaultPathType, dwPChannelCount, dwFlags, pParams);

	if (This->pDirectMusic || This->pDirectSound)
	  return DMUS_E_ALREADY_INITED;

	if (NULL != ppDirectSound && NULL != *ppDirectSound) {
	  dsound = *ppDirectSound;
	} else {
	  hr = DirectSoundCreate8 (NULL, (LPDIRECTSOUND8*) &dsound, NULL);
          FIXME("return dsound(%p,%d)\n", dsound, hr);
	  if (FAILED(hr) || !dsound)
	    return DSERR_NODRIVER;
	  if (ppDirectSound)
	    *ppDirectSound = dsound;  
	}
	
	IDirectMusicPerformance8Impl_Init(iface, ppDirectMusic, dsound, hWnd);

	/* Init increases the ref count of the dsound object. Decrement it if the app doesn't want a pointer to the object. */
	if (NULL == ppDirectSound) {
	  IDirectSound_Release(This->pDirectSound);
	}

	/* as seen in msdn we need params init before audio path creation */
	if (NULL != pParams) {
	  This->pParams = *pParams;
	} else {
	  /* TODO, how can i fill the struct as seen on msdn */
	  memset(&This->pParams, 0, sizeof(DMUS_AUDIOPARAMS));
	  This->pParams.dwSize = sizeof(DMUS_AUDIOPARAMS);
	  This->pParams.fInitNow = FALSE;
	  This->pParams.dwValidData = DMUS_AUDIOPARAMS_FEATURES | DMUS_AUDIOPARAMS_VOICES | DMUS_AUDIOPARAMS_SAMPLERATE | DMUS_AUDIOPARAMS_DEFAULTSYNTH;
	  This->pParams.dwVoices = 64;
	  This->pParams.dwSampleRate = (DWORD) 22.050; 
	  This->pParams.dwFeatures = dwFlags;
	  This->pParams.clsidDefaultSynth = CLSID_DirectMusicSynthSink;
	}
	if(dwDefaultPathType != 0)
		hr = IDirectMusicPerformance8_CreateStandardAudioPath(iface, dwDefaultPathType, dwPChannelCount, FALSE, &This->pDefaultPath);

	PostMessageToProcessMsgThread(This, PROCESSMSG_START);

	return hr;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_PlaySegmentEx(IDirectMusicPerformance8 *iface,
        IUnknown *pSource, WCHAR *pwzSegmentName, IUnknown *pTransition, DWORD dwFlags,
        __int64 i64StartTime, IDirectMusicSegmentState **ppSegmentState, IUnknown *pFrom,
        IUnknown *pAudioPath)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, %p, %p, %d, 0x%s, %p, %p, %p): stub\n", This, pSource, pwzSegmentName,
	    pTransition, dwFlags, wine_dbgstr_longlong(i64StartTime), ppSegmentState, pFrom, pAudioPath);
	if (ppSegmentState)
	  return DMUSIC_CreateDirectMusicSegmentStateImpl(&IID_IDirectMusicSegmentState, (LPVOID*)ppSegmentState, NULL);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_StopEx(IDirectMusicPerformance8 *iface,
        IUnknown *pObjectToStop, __int64 i64StopTime, DWORD dwFlags)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, 0x%s, %d): stub\n", This, pObjectToStop,
	    wine_dbgstr_longlong(i64StopTime), dwFlags);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_ClonePMsg(IDirectMusicPerformance8 *iface,
        DMUS_PMSG *pSourcePMSG, DMUS_PMSG **ppCopyPMSG)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p, %p): stub\n", This, pSourcePMSG, ppCopyPMSG);
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_CreateAudioPath(IDirectMusicPerformance8 *iface,
        IUnknown *pSourceConfig, BOOL fActivate, IDirectMusicAudioPath **ppNewPath)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
	IDirectMusicAudioPathImpl *default_path;
	IDirectMusicAudioPath *pPath;

	FIXME("(%p, %p, %d, %p): stub\n", This, pSourceConfig, fActivate, ppNewPath);

	if (NULL == ppNewPath) {
	  return E_POINTER;
	}

	DMUSIC_CreateDirectMusicAudioPathImpl (&IID_IDirectMusicAudioPath, (LPVOID*)&pPath, NULL);
	default_path = (IDirectMusicAudioPathImpl*)((char*)(pPath) - offsetof(IDirectMusicAudioPathImpl,AudioPathVtbl));
        default_path->pPerf = &This->IDirectMusicPerformance8_iface;

	/** TODO */
	
	*ppNewPath = pPath;

	return IDirectMusicAudioPath_Activate(*ppNewPath, fActivate);
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_CreateStandardAudioPath(IDirectMusicPerformance8 *iface,
        DWORD dwType, DWORD dwPChannelCount, BOOL fActivate, IDirectMusicAudioPath **ppNewPath)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);
	IDirectMusicAudioPathImpl *default_path;
	IDirectMusicAudioPath *pPath;
	DSBUFFERDESC desc;
	WAVEFORMATEX format;
	LPDIRECTSOUNDBUFFER buffer;
	HRESULT hr = S_OK;

	FIXME("(%p)->(%d, %d, %d, %p): semi-stub\n", This, dwType, dwPChannelCount, fActivate, ppNewPath);

	if (NULL == ppNewPath) {
	  return E_POINTER;
	}
	
	DMUSIC_CreateDirectMusicAudioPathImpl (&IID_IDirectMusicAudioPath, (LPVOID*)&pPath, NULL);
	default_path = (IDirectMusicAudioPathImpl*)((char*)(pPath) - offsetof(IDirectMusicAudioPathImpl,AudioPathVtbl));
        default_path->pPerf = &This->IDirectMusicPerformance8_iface;

	/* Secondary buffer description */
	memset(&format, 0, sizeof(format));
	format.wFormatTag = WAVE_FORMAT_PCM;
	format.nChannels = 1;
	format.nSamplesPerSec = 44000;
	format.nAvgBytesPerSec = 44000*2;
	format.nBlockAlign = 2;
	format.wBitsPerSample = 16;
	format.cbSize = 0;
	
	memset(&desc, 0, sizeof(desc));
	desc.dwSize = sizeof(desc);
	desc.dwFlags = DSBCAPS_CTRLFX | DSBCAPS_CTRLPAN | DSBCAPS_CTRLVOLUME | DSBCAPS_GLOBALFOCUS;
	desc.dwBufferBytes = DSBSIZE_MIN;
	desc.dwReserved = 0;
	desc.lpwfxFormat = &format;
	desc.guid3DAlgorithm = GUID_NULL;
	
	switch(dwType) {
	case DMUS_APATH_DYNAMIC_3D:
                desc.dwFlags |= DSBCAPS_CTRL3D | DSBCAPS_CTRLFREQUENCY | DSBCAPS_MUTE3DATMAXDISTANCE;
		break;
	case DMUS_APATH_DYNAMIC_MONO:
	        desc.dwFlags |= DSBCAPS_CTRLFREQUENCY;
		break;
	case DMUS_APATH_SHARED_STEREOPLUSREVERB:
	        /* normally we have to create 2 buffers (one for music other for reverb)
		 * in this case. See msdn
                 */
	case DMUS_APATH_DYNAMIC_STEREO:
		desc.dwFlags |= DSBCAPS_CTRLFREQUENCY;
		format.nChannels = 2;
		format.nBlockAlign *= 2;
		format.nAvgBytesPerSec *=2;
		break;
	default:
	        HeapFree(GetProcessHeap(), 0, default_path); 
	        *ppNewPath = NULL;
	        return E_INVALIDARG;
	}

	/* FIXME: Should we create one secondary buffer for each PChannel? */
	hr = IDirectSound8_CreateSoundBuffer ((LPDIRECTSOUND8) This->pDirectSound, &desc, &buffer, NULL);
	if (FAILED(hr)) {
	        HeapFree(GetProcessHeap(), 0, default_path); 
	        *ppNewPath = NULL;
	        return DSERR_BUFFERLOST;
	}
	default_path->pDSBuffer = buffer;

	/* Update description for creating primary buffer */
	desc.dwFlags |= DSBCAPS_PRIMARYBUFFER;
	desc.dwBufferBytes = 0;
	desc.lpwfxFormat = NULL;

	hr = IDirectSound8_CreateSoundBuffer ((LPDIRECTSOUND8) This->pDirectSound, &desc, &buffer, NULL);
	if (FAILED(hr)) {
                IDirectSoundBuffer_Release(default_path->pDSBuffer);
	        HeapFree(GetProcessHeap(), 0, default_path); 
	        *ppNewPath = NULL;
	        return DSERR_BUFFERLOST;
	}
	default_path->pPrimary = buffer;

	*ppNewPath = pPath;
	
	TRACE(" returning IDirectMusicAudioPath interface at %p.\n", *ppNewPath);

	return IDirectMusicAudioPath_Activate(*ppNewPath, fActivate);
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_SetDefaultAudioPath(IDirectMusicPerformance8 *iface,
        IDirectMusicAudioPath *pAudioPath)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p): semi-stub\n", This, pAudioPath);
	if (NULL != This->pDefaultPath) {
		IDirectMusicAudioPath_Release(This->pDefaultPath);
		((IDirectMusicAudioPathImpl*) This->pDefaultPath)->pPerf = NULL;
		This->pDefaultPath = NULL;
	}
	This->pDefaultPath = pAudioPath;
	if (NULL != This->pDefaultPath) {
		IDirectMusicAudioPath_AddRef(This->pDefaultPath);
		((IDirectMusicAudioPathImpl*)This->pDefaultPath)->pPerf = &This->IDirectMusicPerformance8_iface;
	}

	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetDefaultAudioPath(IDirectMusicPerformance8 *iface,
        IDirectMusicAudioPath **ppAudioPath)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %p): semi-stub (%p)\n", This, ppAudioPath, This->pDefaultPath);

	if (NULL != This->pDefaultPath) {
	  *ppAudioPath = This->pDefaultPath;
          IDirectMusicAudioPath_AddRef(*ppAudioPath);
        } else {
	  *ppAudioPath = NULL;
        }
	return S_OK;
}

static HRESULT WINAPI IDirectMusicPerformance8Impl_GetParamEx(IDirectMusicPerformance8 *iface,
        REFGUID rguidType, DWORD dwTrackID, DWORD dwGroupBits, DWORD dwIndex, MUSIC_TIME mtTime,
        MUSIC_TIME *pmtNext, void *pParam)
{
        IDirectMusicPerformance8Impl *This = impl_from_IDirectMusicPerformance8(iface);

	FIXME("(%p, %s, %d, %d, %d, %d, %p, %p): stub\n", This, debugstr_dmguid(rguidType), dwTrackID, dwGroupBits, dwIndex, mtTime, pmtNext, pParam);

	return S_OK;
}

static const IDirectMusicPerformance8Vtbl DirectMusicPerformance8_Vtbl = {
	IDirectMusicPerformance8Impl_QueryInterface,
	IDirectMusicPerformance8Impl_AddRef,
	IDirectMusicPerformance8Impl_Release,
	IDirectMusicPerformance8Impl_Init,
	IDirectMusicPerformance8Impl_PlaySegment,
	IDirectMusicPerformance8Impl_Stop,
	IDirectMusicPerformance8Impl_GetSegmentState,
	IDirectMusicPerformance8Impl_SetPrepareTime,
	IDirectMusicPerformance8Impl_GetPrepareTime,
	IDirectMusicPerformance8Impl_SetBumperLength,
	IDirectMusicPerformance8Impl_GetBumperLength,
	IDirectMusicPerformance8Impl_SendPMsg,
	IDirectMusicPerformance8Impl_MusicToReferenceTime,
	IDirectMusicPerformance8Impl_ReferenceToMusicTime,
	IDirectMusicPerformance8Impl_IsPlaying,
	IDirectMusicPerformance8Impl_GetTime,
	IDirectMusicPerformance8Impl_AllocPMsg,
	IDirectMusicPerformance8Impl_FreePMsg,
	IDirectMusicPerformance8Impl_GetGraph,
	IDirectMusicPerformance8Impl_SetGraph,
	IDirectMusicPerformance8Impl_SetNotificationHandle,
	IDirectMusicPerformance8Impl_GetNotificationPMsg,
	IDirectMusicPerformance8Impl_AddNotificationType,
	IDirectMusicPerformance8Impl_RemoveNotificationType,
	IDirectMusicPerformance8Impl_AddPort,
	IDirectMusicPerformance8Impl_RemovePort,
	IDirectMusicPerformance8Impl_AssignPChannelBlock,
	IDirectMusicPerformance8Impl_AssignPChannel,
	IDirectMusicPerformance8Impl_PChannelInfo,
	IDirectMusicPerformance8Impl_DownloadInstrument,
	IDirectMusicPerformance8Impl_Invalidate,
	IDirectMusicPerformance8Impl_GetParam,
	IDirectMusicPerformance8Impl_SetParam,
	IDirectMusicPerformance8Impl_GetGlobalParam,
	IDirectMusicPerformance8Impl_SetGlobalParam,
	IDirectMusicPerformance8Impl_GetLatencyTime,
	IDirectMusicPerformance8Impl_GetQueueTime,
	IDirectMusicPerformance8Impl_AdjustTime,
	IDirectMusicPerformance8Impl_CloseDown,
	IDirectMusicPerformance8Impl_GetResolvedTime,
	IDirectMusicPerformance8Impl_MIDIToMusic,
	IDirectMusicPerformance8Impl_MusicToMIDI,
	IDirectMusicPerformance8Impl_TimeToRhythm,
	IDirectMusicPerformance8Impl_RhythmToTime,
	IDirectMusicPerformance8Impl_InitAudio,
	IDirectMusicPerformance8Impl_PlaySegmentEx,
	IDirectMusicPerformance8Impl_StopEx,
	IDirectMusicPerformance8Impl_ClonePMsg,
	IDirectMusicPerformance8Impl_CreateAudioPath,
	IDirectMusicPerformance8Impl_CreateStandardAudioPath,
	IDirectMusicPerformance8Impl_SetDefaultAudioPath,
	IDirectMusicPerformance8Impl_GetDefaultAudioPath,
	IDirectMusicPerformance8Impl_GetParamEx
};

/* for ClassFactory */
HRESULT WINAPI DMUSIC_CreateDirectMusicPerformanceImpl (LPCGUID lpcGUID, LPVOID *ppobj, LPUNKNOWN pUnkOuter) {
	IDirectMusicPerformance8Impl *obj;

	TRACE("(%p,%p,%p)\n", lpcGUID, ppobj, pUnkOuter);

        if (pUnkOuter) {
                *ppobj = NULL;
                return CLASS_E_NOAGGREGATION;
        }

	obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicPerformance8Impl));
        if (NULL == obj) {
		*ppobj = NULL;
		return E_OUTOFMEMORY;
	}
        obj->IDirectMusicPerformance8_iface.lpVtbl = &DirectMusicPerformance8_Vtbl;
	obj->ref = 0;  /* will be inited by QueryInterface */
	obj->pDirectMusic = NULL;
	obj->pDirectSound = NULL;
	obj->pDefaultPath = NULL;
	InitializeCriticalSection(&obj->safe);
	obj->safe.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": IDirectMusicPerformance8Impl*->safe");

	obj->rtLatencyTime  = 100;  /* 100ms TO FIX */
	obj->dwBumperLength =   50; /* 50ms default */
	obj->dwPrepareTime  = 1000; /* 1000ms default */
        return IDirectMusicPerformance8Impl_QueryInterface(&obj->IDirectMusicPerformance8_iface,
                                                           lpcGUID, ppobj);
}