text: /* IDirectMusicAudioPath Implementation
   *
   * Copyright (C) 2003-2004 Rok Mandeljc
   *
   * 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);
  WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  
  /*****************************************************************************
   * IDirectMusicAudioPathImpl implementation
   */
  /* IDirectMusicAudioPath IUnknown part: */
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IUnknown_QueryInterface (LPUNKNOWN iface, REFIID riid, LPVOID *ppobj) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, UnknownVtbl, iface);
  	TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
  
  	if (IsEqualIID (riid, &IID_IUnknown)) {
  		*ppobj = &This->UnknownVtbl;
  		IUnknown_AddRef (iface);
  		return S_OK;	
  	} else if (IsEqualIID (riid, &IID_IDirectMusicAudioPath)) {
  		*ppobj = &This->AudioPathVtbl;
  		IUnknown_AddRef (iface);
  		return S_OK;
  	} else if (IsEqualIID (riid, &IID_IDirectMusicObject)) {
  		*ppobj = &This->ObjectVtbl;
  		IUnknown_AddRef (iface);
  		return S_OK;
  	} else if (IsEqualIID (riid, &IID_IPersistStream)) {
  		*ppobj = &This->PersistStreamVtbl;
  		IUnknown_AddRef (iface);
  		return S_OK;
  	}
  	
  	WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
  	return E_NOINTERFACE;
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IUnknown_AddRef (LPUNKNOWN iface) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, UnknownVtbl, iface);
          ULONG ref = InterlockedIncrement(&This->ref);
  
  	TRACE("(%p): AddRef from %d\n", This, ref - 1);
  
  	DMIME_LockModule();
  
  	return ref;
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IUnknown_Release (LPUNKNOWN iface) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, UnknownVtbl, iface);
    ULONG ref = InterlockedDecrement(&This->ref);
    TRACE("(%p): ReleaseRef to %d\n", This, ref);
    
    if (ref == 0) {
      if (This->pDSBuffer) {
        IDirectSoundBuffer8_Release(This->pDSBuffer);
      }
      HeapFree(GetProcessHeap(), 0, This);
    }
  
    DMIME_UnlockModule();
    
    return ref;
  }
  
  static const IUnknownVtbl DirectMusicAudioPath_Unknown_Vtbl = {
  	IDirectMusicAudioPathImpl_IUnknown_QueryInterface,
  	IDirectMusicAudioPathImpl_IUnknown_AddRef,
  	IDirectMusicAudioPathImpl_IUnknown_Release
  };
  
  /* IDirectMusicAudioPathImpl IDirectMusicAudioPath part: */
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_QueryInterface (LPDIRECTMUSICAUDIOPATH iface, REFIID riid, LPVOID *ppobj) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
  	return IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_AddRef (LPDIRECTMUSICAUDIOPATH iface) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
  	return IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_Release (LPDIRECTMUSICAUDIOPATH iface) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
  	return IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_GetObjectInPath (LPDIRECTMUSICAUDIOPATH iface, DWORD dwPChannel, DWORD dwStage, DWORD dwBuffer, REFGUID guidObject, WORD dwIndex, REFGUID iidInterface, void** ppObject) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
  
  	FIXME("(%p, %d, %d, %d, %s, %d, %s, %p): stub\n", This, dwPChannel, dwStage, dwBuffer, debugstr_dmguid(guidObject), dwIndex, debugstr_dmguid(iidInterface), ppObject);
  	    
  	switch (dwStage) {
          case DMUS_PATH_BUFFER:
            if (This->pDSBuffer)
            {
              if (IsEqualIID (iidInterface, &IID_IDirectSoundBuffer8)) {
                IDirectSoundBuffer8_QueryInterface (This->pDSBuffer, &IID_IDirectSoundBuffer8, ppObject);
                TRACE("returning %p\n",*ppObject);
                return S_OK;
              } else if (IsEqualIID (iidInterface, &IID_IDirectSound3DBuffer)) {
                IDirectSoundBuffer8_QueryInterface (This->pDSBuffer, &IID_IDirectSound3DBuffer, ppObject);
                TRACE("returning %p\n",*ppObject);
                return S_OK;
              } else {
                FIXME("Bad iid\n");
              }
            }
            break;
  
  	case DMUS_PATH_PRIMARY_BUFFER: {
  	  if (IsEqualIID (iidInterface, &IID_IDirectSound3DListener)) {
  	    IDirectSoundBuffer8_QueryInterface (This->pPrimary, &IID_IDirectSound3DListener, ppObject);
  	    return S_OK;
  	  } else {
  	    FIXME("bad iid...\n");
  	  }
  	}
  	break;
  
  	case DMUS_PATH_AUDIOPATH_GRAPH:
  	  {
  	    if (IsEqualIID (iidInterface, &IID_IDirectMusicGraph)) {
  	      if (NULL == This->pToolGraph) {
  		IDirectMusicGraphImpl* pGraph;
                  create_dmgraph(&IID_IDirectMusicGraph, (void**)&pGraph);
  		This->pToolGraph = (IDirectMusicGraph*) pGraph;
  	      }
  	      *ppObject = This->pToolGraph;
  	      IDirectMusicGraph_AddRef((LPDIRECTMUSICGRAPH) *ppObject);
  	      return S_OK;
  	    }
  	  }
  	  break;
  
  	case DMUS_PATH_AUDIOPATH_TOOL:
  	  {
  	    /* TODO */
  	  }
  	  break;
  
  	case DMUS_PATH_PERFORMANCE:
  	  {
  	    /* TODO check wanted GUID */
  	    *ppObject = This->pPerf;
  	    IUnknown_AddRef((LPUNKNOWN) *ppObject);
  	    return S_OK;
  	  }
  	  break;
  
  	case DMUS_PATH_PERFORMANCE_GRAPH:
  	  {
  	    IDirectMusicGraph* pPerfoGraph = NULL; 
  	    IDirectMusicPerformance8_GetGraph(This->pPerf, &pPerfoGraph);
  	    if (NULL == pPerfoGraph) {
  	      IDirectMusicGraphImpl* pGraph = NULL; 
                create_dmgraph(&IID_IDirectMusicGraph, (void**)&pGraph);
  	      IDirectMusicPerformance8_SetGraph(This->pPerf, (IDirectMusicGraph*) pGraph);
  	      /* we need release as SetGraph do an AddRef */
  	      IDirectMusicGraph_Release((LPDIRECTMUSICGRAPH) pGraph);
  	      pPerfoGraph = (LPDIRECTMUSICGRAPH) pGraph;
  	    }
  	    *ppObject = pPerfoGraph;
  	    return S_OK;
  	  }
  	  break;
  
  	case DMUS_PATH_PERFORMANCE_TOOL:
  	default:
  	  break;
  	}
  
  	*ppObject = NULL;
  	return E_INVALIDARG;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_Activate (LPDIRECTMUSICAUDIOPATH iface, BOOL fActivate) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
    FIXME("(%p, %d): stub\n", This, fActivate);
    if (!fActivate) {
      if (!This->fActive) return S_OK;
      This->fActive = FALSE;
    } else {
      if (This->fActive) return S_OK;
      This->fActive = TRUE;
      if (NULL != This->pDSBuffer) {
        IDirectSoundBuffer_Stop(This->pDSBuffer);
      }
    }
    return S_OK;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_SetVolume (LPDIRECTMUSICAUDIOPATH iface, LONG lVolume, DWORD dwDuration) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
    FIXME("(%p, %i, %d): stub\n", This, lVolume, dwDuration);
    return S_OK;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicAudioPath_ConvertPChannel (LPDIRECTMUSICAUDIOPATH iface, DWORD dwPChannelIn, DWORD* pdwPChannelOut) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, AudioPathVtbl, iface);
    FIXME("(%p, %d, %p): stub\n", This, dwPChannelIn, pdwPChannelOut);
    return S_OK;
  }
  
  static const IDirectMusicAudioPathVtbl DirectMusicAudioPath_AudioPath_Vtbl = {
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_QueryInterface,
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_AddRef,
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_Release,
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_GetObjectInPath,
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_Activate,
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_SetVolume,
    IDirectMusicAudioPathImpl_IDirectMusicAudioPath_ConvertPChannel
  };
  
  /* IDirectMusicAudioPathImpl IDirectMusicObject part: */
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicObject_QueryInterface (LPDIRECTMUSICOBJECT iface, REFIID riid, LPVOID *ppobj) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, ObjectVtbl, iface);
    return IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IDirectMusicObject_AddRef (LPDIRECTMUSICOBJECT iface) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, ObjectVtbl, iface);
    return IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IDirectMusicObject_Release (LPDIRECTMUSICOBJECT iface) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, ObjectVtbl, iface);
    return IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicObject_GetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
    ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, ObjectVtbl, iface);
    TRACE("(%p, %p)\n", This, pDesc);
    /* I think we shouldn't return pointer here since then values can be changed; it'd be a mess */
    memcpy (pDesc, This->pDesc, This->pDesc->dwSize);
    return S_OK;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicObject_SetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, ObjectVtbl, iface);
  	TRACE("(%p, %p): setting descriptor:\n%s\n", This, pDesc, debugstr_DMUS_OBJECTDESC (pDesc));
  
  	/* According to MSDN, we should copy only given values, not whole struct */	
  	if (pDesc->dwValidData & DMUS_OBJ_OBJECT)
  		This->pDesc->guidObject = pDesc->guidObject;
  	if (pDesc->dwValidData & DMUS_OBJ_CLASS)
  		This->pDesc->guidClass = pDesc->guidClass;
  	if (pDesc->dwValidData & DMUS_OBJ_NAME)
  		lstrcpynW (This->pDesc->wszName, pDesc->wszName, DMUS_MAX_NAME);
  	if (pDesc->dwValidData & DMUS_OBJ_CATEGORY)
  		lstrcpynW (This->pDesc->wszCategory, pDesc->wszCategory, DMUS_MAX_CATEGORY);
  	if (pDesc->dwValidData & DMUS_OBJ_FILENAME)
  		lstrcpynW (This->pDesc->wszFileName, pDesc->wszFileName, DMUS_MAX_FILENAME);
  	if (pDesc->dwValidData & DMUS_OBJ_VERSION)
  		This->pDesc->vVersion = pDesc->vVersion;
  	if (pDesc->dwValidData & DMUS_OBJ_DATE)
  		This->pDesc->ftDate = pDesc->ftDate;
  	if (pDesc->dwValidData & DMUS_OBJ_MEMORY) {
  		This->pDesc->llMemLength = pDesc->llMemLength;
  		memcpy (This->pDesc->pbMemData, pDesc->pbMemData, pDesc->llMemLength);
  	}
  	if (pDesc->dwValidData & DMUS_OBJ_STREAM) {
  		/* according to MSDN, we copy the stream */
  		IStream_Clone (pDesc->pStream, &This->pDesc->pStream);	
  	}
  	
  	/* add new flags */
  	This->pDesc->dwValidData |= pDesc->dwValidData;
  
  	return S_OK;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IDirectMusicObject_ParseDescriptor (LPDIRECTMUSICOBJECT iface, LPSTREAM pStream, LPDMUS_OBJECTDESC pDesc) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, ObjectVtbl, iface);
  	DMUS_PRIVATE_CHUNK Chunk;
  	DWORD StreamSize, StreamCount, ListSize[1], ListCount[1];
  	LARGE_INTEGER liMove; /* used when skipping chunks */
  
  	TRACE("(%p, %p, %p)\n", This, pStream, pDesc);
  
  	/* FIXME: should this be determined from stream? */
  	pDesc->dwValidData |= DMUS_OBJ_CLASS;
  	pDesc->guidClass = This->pDesc->guidClass;
  
  	IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
  	TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
  	switch (Chunk.fccID) {	
  		case FOURCC_RIFF: {
  			IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);				
  			TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(Chunk.fccID));
  			StreamSize = Chunk.dwSize - sizeof(FOURCC);
  			StreamCount = 0;
  			if (Chunk.fccID == DMUS_FOURCC_AUDIOPATH_FORM) {
  				TRACE_(dmfile)(": audio path form\n");
  				do {
  					IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
  					StreamCount += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
  					TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
  					switch (Chunk.fccID) {
  						case DMUS_FOURCC_GUID_CHUNK: {
  							TRACE_(dmfile)(": GUID chunk\n");
  							pDesc->dwValidData |= DMUS_OBJ_OBJECT;
  							IStream_Read (pStream, &pDesc->guidObject, Chunk.dwSize, NULL);
  							break;
  						}
  						case DMUS_FOURCC_VERSION_CHUNK: {
  							TRACE_(dmfile)(": version chunk\n");
  							pDesc->dwValidData |= DMUS_OBJ_VERSION;
  							IStream_Read (pStream, &pDesc->vVersion, Chunk.dwSize, NULL);
  							break;
  						}
  						case DMUS_FOURCC_CATEGORY_CHUNK: {
  							TRACE_(dmfile)(": category chunk\n");
  							pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
  							IStream_Read (pStream, pDesc->wszCategory, Chunk.dwSize, NULL);
  							break;
  						}
  						case FOURCC_LIST: {
  							IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);				
  							TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
  							ListSize[0] = Chunk.dwSize - sizeof(FOURCC);
  							ListCount[0] = 0;
  							switch (Chunk.fccID) {
  								/* evil M$ UNFO list, which can (!?) contain INFO elements */
  								case DMUS_FOURCC_UNFO_LIST: {
  									TRACE_(dmfile)(": UNFO list\n");
  									do {
  										IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
  										ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
  										TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
  										switch (Chunk.fccID) {
  											/* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
                                               (though strings seem to be valid unicode) */
  											case mmioFOURCC('I','N','A','M'):
  											case DMUS_FOURCC_UNAM_CHUNK: {
  												TRACE_(dmfile)(": name chunk\n");
  												pDesc->dwValidData |= DMUS_OBJ_NAME;
  												IStream_Read (pStream, pDesc->wszName, Chunk.dwSize, NULL);
  												break;
  											}
  											case mmioFOURCC('I','A','R','T'):
  											case DMUS_FOURCC_UART_CHUNK: {
  												TRACE_(dmfile)(": artist chunk (ignored)\n");
  												liMove.QuadPart = Chunk.dwSize;
  												IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  												break;
  											}
  											case mmioFOURCC('I','C','O','P'):
  											case DMUS_FOURCC_UCOP_CHUNK: {
  												TRACE_(dmfile)(": copyright chunk (ignored)\n");
  												liMove.QuadPart = Chunk.dwSize;
  												IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  												break;
  											}
  											case mmioFOURCC('I','S','B','J'):
  											case DMUS_FOURCC_USBJ_CHUNK: {
  												TRACE_(dmfile)(": subject chunk (ignored)\n");
  												liMove.QuadPart = Chunk.dwSize;
  												IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  												break;
  											}
  											case mmioFOURCC('I','C','M','T'):
  											case DMUS_FOURCC_UCMT_CHUNK: {
  												TRACE_(dmfile)(": comment chunk (ignored)\n");
  												liMove.QuadPart = Chunk.dwSize;
  												IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  												break;
  											}
  											default: {
  												TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
  												liMove.QuadPart = Chunk.dwSize;
  												IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  												break;						
  											}
  										}
  										TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
  									} while (ListCount[0] < ListSize[0]);
  									break;
  								}
  								default: {
  									TRACE_(dmfile)(": unknown (skipping)\n");
  									liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
  									IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  									break;						
  								}
  							}
  							break;
  						}	
  						default: {
  							TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
  							liMove.QuadPart = Chunk.dwSize;
  							IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
  							break;						
  						}
  					}
  					TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
  				} while (StreamCount < StreamSize);
  			} else {
  				TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
  				liMove.QuadPart = StreamSize;
  				IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
  				return E_FAIL;
  			}
  		
  			TRACE_(dmfile)(": reading finished\n");
  			break;
  		}
  		default: {
  			TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
  			liMove.QuadPart = Chunk.dwSize;
  			IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
  			return DMUS_E_INVALIDFILE;
  		}
  	}	
  	
  	TRACE(": returning descriptor:\n%s\n", debugstr_DMUS_OBJECTDESC (pDesc));
  	
  	return S_OK;
  }
  
  static const IDirectMusicObjectVtbl DirectMusicAudioPath_Object_Vtbl = {
  	IDirectMusicAudioPathImpl_IDirectMusicObject_QueryInterface,
  	IDirectMusicAudioPathImpl_IDirectMusicObject_AddRef,
  	IDirectMusicAudioPathImpl_IDirectMusicObject_Release,
  	IDirectMusicAudioPathImpl_IDirectMusicObject_GetDescriptor,
  	IDirectMusicAudioPathImpl_IDirectMusicObject_SetDescriptor,
  	IDirectMusicAudioPathImpl_IDirectMusicObject_ParseDescriptor
  };
  
  /* IDirectMusicAudioPathImpl IPersistStream part: */
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IPersistStream_QueryInterface (LPPERSISTSTREAM iface, REFIID riid, LPVOID *ppobj) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, PersistStreamVtbl, iface);
  	return IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IPersistStream_AddRef (LPPERSISTSTREAM iface) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, PersistStreamVtbl, iface);
  	return IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  }
  
  static ULONG WINAPI IDirectMusicAudioPathImpl_IPersistStream_Release (LPPERSISTSTREAM iface) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, PersistStreamVtbl, iface);
  	return IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IPersistStream_GetClassID (LPPERSISTSTREAM iface, CLSID* pClassID) {
  	return E_NOTIMPL;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IPersistStream_IsDirty (LPPERSISTSTREAM iface) {
  	return E_NOTIMPL;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IPersistStream_Load (LPPERSISTSTREAM iface, IStream* pStm) {
  	ICOM_THIS_MULTI(IDirectMusicAudioPathImpl, PersistStreamVtbl, iface);
  
  	FOURCC chunkID;
  	DWORD chunkSize, StreamSize, StreamCount, ListSize[3], ListCount[3];
  	LARGE_INTEGER liMove; /* used when skipping chunks */
  
  	FIXME("(%p, %p): Loading not implemented yet\n", This, pStm);
  	IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
  	IStream_Read (pStm, &chunkSize, sizeof(DWORD), NULL);
  	TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
  	switch (chunkID) {	
  		case FOURCC_RIFF: {
  			IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);				
  			TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(chunkID));
  			StreamSize = chunkSize - sizeof(FOURCC);
  			StreamCount = 0;
  			switch (chunkID) {
  				case DMUS_FOURCC_AUDIOPATH_FORM: {
  					TRACE_(dmfile)(": audio path form\n");
  					do {
  						IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
  						IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
  						StreamCount += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
  						TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
  						switch (chunkID) {
  							case DMUS_FOURCC_GUID_CHUNK: {
  								TRACE_(dmfile)(": GUID chunk\n");
  								This->pDesc->dwValidData |= DMUS_OBJ_OBJECT;
  								IStream_Read (pStm, &This->pDesc->guidObject, chunkSize, NULL);
  								break;
  							}
  							case DMUS_FOURCC_VERSION_CHUNK: {
  								TRACE_(dmfile)(": version chunk\n");
  								This->pDesc->dwValidData |= DMUS_OBJ_VERSION;
  								IStream_Read (pStm, &This->pDesc->vVersion, chunkSize, NULL);
  								break;
  							}
  							case DMUS_FOURCC_CATEGORY_CHUNK: {
  								TRACE_(dmfile)(": category chunk\n");
  								This->pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
  								IStream_Read (pStm, This->pDesc->wszCategory, chunkSize, NULL);
  								break;
  							}
  							case FOURCC_LIST: {
  								IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);				
  								TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunkID));
  								ListSize[0] = chunkSize - sizeof(FOURCC);
  								ListCount[0] = 0;
  								switch (chunkID) {
  									case DMUS_FOURCC_UNFO_LIST: {
  										TRACE_(dmfile)(": UNFO list\n");
  										do {
  											IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
  											IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
  											ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
  											TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
  											switch (chunkID) {
  												/* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
                                                (though strings seem to be valid unicode) */
  												case mmioFOURCC('I','N','A','M'):
  												case DMUS_FOURCC_UNAM_CHUNK: {
  													TRACE_(dmfile)(": name chunk\n");
  													This->pDesc->dwValidData |= DMUS_OBJ_NAME;
  													IStream_Read (pStm, This->pDesc->wszName, chunkSize, NULL);
  													break;
  												}
  												case mmioFOURCC('I','A','R','T'):
  												case DMUS_FOURCC_UART_CHUNK: {
  													TRACE_(dmfile)(": artist chunk (ignored)\n");
  													liMove.QuadPart = chunkSize;
  													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  													break;
  												}
  												case mmioFOURCC('I','C','O','P'):
  												case DMUS_FOURCC_UCOP_CHUNK: {
  													TRACE_(dmfile)(": copyright chunk (ignored)\n");
  													liMove.QuadPart = chunkSize;
  													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  													break;
  												}
  												case mmioFOURCC('I','S','B','J'):
  												case DMUS_FOURCC_USBJ_CHUNK: {
  													TRACE_(dmfile)(": subject chunk (ignored)\n");
  													liMove.QuadPart = chunkSize;
  													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  													break;
  												}
  												case mmioFOURCC('I','C','M','T'):
  												case DMUS_FOURCC_UCMT_CHUNK: {
  													TRACE_(dmfile)(": comment chunk (ignored)\n");
  													liMove.QuadPart = chunkSize;
  													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  													break;
  												}
  												default: {
  													TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
  													liMove.QuadPart = chunkSize;
  													IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  													break;						
  												}
  											}
  											TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
  										} while (ListCount[0] < ListSize[0]);
  										break;
  									}
  									default: {
  										TRACE_(dmfile)(": unknown (skipping)\n");
  										liMove.QuadPart = chunkSize - sizeof(FOURCC);
  										IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  										break;						
  									}
  								}
  								break;
  							}	
  							default: {
  								TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
  								liMove.QuadPart = chunkSize;
  								IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
  								break;						
  							}
  						}
  						TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
  					} while (StreamCount < StreamSize);
  					break;
  				}
  				default: {
  					TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
  					liMove.QuadPart = StreamSize;
  					IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
  					return E_FAIL;
  				}
  			}
  			TRACE_(dmfile)(": reading finished\n");
  			break;
  		}
  		default: {
  			TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
  			liMove.QuadPart = chunkSize;
  			IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
  			return E_FAIL;
  		}
  	}
  
  	return S_OK;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IPersistStream_Save (LPPERSISTSTREAM iface, IStream* pStm, BOOL fClearDirty) {
  	return E_NOTIMPL;
  }
  
  static HRESULT WINAPI IDirectMusicAudioPathImpl_IPersistStream_GetSizeMax (LPPERSISTSTREAM iface, ULARGE_INTEGER* pcbSize) {
  	return E_NOTIMPL;
  }
  
  static const IPersistStreamVtbl DirectMusicAudioPath_PersistStream_Vtbl = {
  	IDirectMusicAudioPathImpl_IPersistStream_QueryInterface,
  	IDirectMusicAudioPathImpl_IPersistStream_AddRef,
  	IDirectMusicAudioPathImpl_IPersistStream_Release,
  	IDirectMusicAudioPathImpl_IPersistStream_GetClassID,
  	IDirectMusicAudioPathImpl_IPersistStream_IsDirty,
  	IDirectMusicAudioPathImpl_IPersistStream_Load,
  	IDirectMusicAudioPathImpl_IPersistStream_Save,
  	IDirectMusicAudioPathImpl_IPersistStream_GetSizeMax
  };
  
  /* for ClassFactory */
  HRESULT WINAPI create_dmaudiopath(REFIID lpcGUID, void **ppobj)
  {
  	IDirectMusicAudioPathImpl* obj;
  	
  	obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicAudioPathImpl));
  	if (NULL == obj) {
  		*ppobj = NULL;
  		return E_OUTOFMEMORY;
  	}
  	obj->UnknownVtbl = &DirectMusicAudioPath_Unknown_Vtbl;
  	obj->AudioPathVtbl = &DirectMusicAudioPath_AudioPath_Vtbl;
  	obj->ObjectVtbl = &DirectMusicAudioPath_Object_Vtbl;
  	obj->PersistStreamVtbl = &DirectMusicAudioPath_PersistStream_Vtbl;
  	obj->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
  	DM_STRUCT_INIT(obj->pDesc);
  	obj->pDesc->dwValidData |= DMUS_OBJ_CLASS;
  	obj->pDesc->guidClass = CLSID_DirectMusicAudioPathConfig;
  	obj->ref = 0; /* will be inited by QueryInterface */
  
  	return IDirectMusicAudioPathImpl_IUnknown_QueryInterface ((LPUNKNOWN)&obj->UnknownVtbl, lpcGUID, ppobj);
  }
  