text: /*
   * IDirectMusicCollection 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 "dmusic_private.h"
  #include "dmobject.h"
  
  WINE_DEFAULT_DEBUG_CHANNEL(dmusic);
  WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  
  /*****************************************************************************
   * IDirectMusicCollectionImpl implementation
   */
  typedef struct IDirectMusicCollectionImpl {
      IDirectMusicCollection IDirectMusicCollection_iface;
      struct dmobject dmobj;
      LONG ref;
      /* IDirectMusicCollectionImpl fields */
      IStream *pStm; /* stream from which we load collection and later instruments */
      LARGE_INTEGER liCollectionPosition; /* offset in a stream where collection was loaded from */
      LARGE_INTEGER liWavePoolTablePosition; /* offset in a stream where wave pool table can be found */
      CHAR *szCopyright; /* FIXME: should probably be placed somewhere else */
      DLSHEADER *pHeader;
      /* pool table */
      POOLTABLE *pPoolTable;
      POOLCUE *pPoolCues;
      /* instruments */
      struct list Instruments;
  } IDirectMusicCollectionImpl;
  
  static inline IDirectMusicCollectionImpl *impl_from_IDirectMusicCollection(IDirectMusicCollection *iface)
  {
      return CONTAINING_RECORD(iface, IDirectMusicCollectionImpl, IDirectMusicCollection_iface);
  }
  
  static inline struct dmobject *impl_from_IDirectMusicObject(IDirectMusicObject *iface)
  {
      return CONTAINING_RECORD(iface, struct dmobject, IDirectMusicObject_iface);
  }
  
  static inline IDirectMusicCollectionImpl *impl_from_IPersistStream(IPersistStream *iface)
  {
      return CONTAINING_RECORD(iface, IDirectMusicCollectionImpl, dmobj.IPersistStream_iface);
  }
  
  /* IDirectMusicCollectionImpl IUnknown part: */
  static HRESULT WINAPI IDirectMusicCollectionImpl_QueryInterface(IDirectMusicCollection *iface,
          REFIID riid, void **ret_iface)
  {
      IDirectMusicCollectionImpl *This = impl_from_IDirectMusicCollection(iface);
  
      TRACE("(%p/%p)->(%s, %p)\n", iface, This, debugstr_dmguid(riid), ret_iface);
  
      *ret_iface = NULL;
  
      if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDirectMusicCollection))
          *ret_iface = iface;
      else if (IsEqualIID(riid, &IID_IDirectMusicObject))
          *ret_iface = &This->dmobj.IDirectMusicObject_iface;
      else if (IsEqualIID(riid, &IID_IPersistStream))
          *ret_iface = &This->dmobj.IPersistStream_iface;
      else
      {
          WARN("(%p/%p)->(%s, %p): not found\n", iface, This, debugstr_dmguid(riid), ret_iface);
          return E_NOINTERFACE;
      }
  
      IUnknown_AddRef((IUnknown*)*ret_iface);
      return S_OK;
  }
  
  static ULONG WINAPI IDirectMusicCollectionImpl_AddRef(IDirectMusicCollection *iface)
  {
      IDirectMusicCollectionImpl *This = impl_from_IDirectMusicCollection(iface);
      ULONG ref = InterlockedIncrement(&This->ref);
  
      TRACE("(%p/%p)->(): new ref = %u\n", iface, This, ref);
  
      return ref;
  }
  
  static ULONG WINAPI IDirectMusicCollectionImpl_Release(IDirectMusicCollection *iface)
  {
      IDirectMusicCollectionImpl *This = impl_from_IDirectMusicCollection(iface);
      ULONG ref = InterlockedDecrement(&This->ref);
  
      TRACE("(%p/%p)->(): new ref = %u\n", iface, This, ref);
  
      if (!ref) {
          HeapFree(GetProcessHeap(), 0, This);
          DMUSIC_UnlockModule();
      }
  
      return ref;
  }
  
  /* IDirectMusicCollection Interface follows: */
  static HRESULT WINAPI IDirectMusicCollectionImpl_GetInstrument(IDirectMusicCollection *iface,
          DWORD patch, IDirectMusicInstrument **instrument)
  {
      IDirectMusicCollectionImpl *This = impl_from_IDirectMusicCollection(iface);
      DMUS_PRIVATE_INSTRUMENTENTRY *inst_entry;
      struct list *list_entry;
      DWORD inst_patch;
  
      TRACE("(%p/%p)->(%u, %p)\n", iface, This, patch, instrument);
  
      LIST_FOR_EACH(list_entry, &This->Instruments) {
          inst_entry = LIST_ENTRY(list_entry, DMUS_PRIVATE_INSTRUMENTENTRY, entry);
          IDirectMusicInstrument_GetPatch(inst_entry->pInstrument, &inst_patch);
          if (patch == inst_patch) {
              *instrument = inst_entry->pInstrument;
              IDirectMusicInstrument_AddRef(inst_entry->pInstrument);
              IDirectMusicInstrumentImpl_CustomLoad(inst_entry->pInstrument, This->pStm);
              TRACE(": returning instrument %p\n", *instrument);
              return S_OK;
          }
      }
  
      TRACE(": instrument not found\n");
  
      return DMUS_E_INVALIDPATCH;
  }
  
  static HRESULT WINAPI IDirectMusicCollectionImpl_EnumInstrument(IDirectMusicCollection *iface,
          DWORD index, DWORD *patch, LPWSTR name, DWORD name_length)
  {
      IDirectMusicCollectionImpl *This = impl_from_IDirectMusicCollection(iface);
      DWORD i = 0;
      DMUS_PRIVATE_INSTRUMENTENTRY *inst_entry;
      struct list *list_entry;
      DWORD length;
  
      TRACE("(%p/%p)->(%d, %p, %p, %d)\n", iface, This, index, patch, name, name_length);
  
      LIST_FOR_EACH(list_entry, &This->Instruments) {
          inst_entry = LIST_ENTRY(list_entry, DMUS_PRIVATE_INSTRUMENTENTRY, entry);
          if (i == index) {
              IDirectMusicInstrumentImpl *instrument = impl_from_IDirectMusicInstrument(inst_entry->pInstrument);
              IDirectMusicInstrument_GetPatch(inst_entry->pInstrument, patch);
              if (name) {
                  length = min(strlenW(instrument->wszName), name_length - 1);
                  memcpy(name, instrument->wszName, length * sizeof(WCHAR));
                  name[length] = '\0';
              }
              return S_OK;
          }
          i++;
      }
  
      return S_FALSE;
  }
  
  static const IDirectMusicCollectionVtbl DirectMusicCollection_Collection_Vtbl = {
      IDirectMusicCollectionImpl_QueryInterface,
      IDirectMusicCollectionImpl_AddRef,
      IDirectMusicCollectionImpl_Release,
      IDirectMusicCollectionImpl_GetInstrument,
      IDirectMusicCollectionImpl_EnumInstrument
  };
  
  /* IDirectMusicCollectionImpl IDirectMusicObject part: */
  static HRESULT WINAPI col_IDirectMusicObject_ParseDescriptor(IDirectMusicObject *iface,
          IStream *stream, DMUS_OBJECTDESC *desc)
  {
      struct chunk_entry riff = {0};
      HRESULT hr;
  
      TRACE("(%p, %p, %p)\n", iface, stream, desc);
  
      if (!stream || !desc)
          return E_POINTER;
  
      if ((hr = stream_get_chunk(stream, &riff)) != S_OK)
          return hr;
      if (riff.id != FOURCC_RIFF || riff.type != FOURCC_DLS) {
          TRACE("loading failed: unexpected %s\n", debugstr_chunk(&riff));
          stream_skip_chunk(stream, &riff);
          return DMUS_E_NOTADLSCOL;
      }
  
      hr = dmobj_parsedescriptor(stream, &riff, desc, DMUS_OBJ_NAME_INFO|DMUS_OBJ_VERSION);
      if (FAILED(hr))
          return hr;
  
      desc->guidClass = CLSID_DirectMusicCollection;
      desc->dwValidData |= DMUS_OBJ_CLASS;
  
      TRACE("returning descriptor:\n");
      dump_DMUS_OBJECTDESC(desc);
      return S_OK;
  }
  
  static const IDirectMusicObjectVtbl dmobject_vtbl = {
      dmobj_IDirectMusicObject_QueryInterface,
      dmobj_IDirectMusicObject_AddRef,
      dmobj_IDirectMusicObject_Release,
      dmobj_IDirectMusicObject_GetDescriptor,
      dmobj_IDirectMusicObject_SetDescriptor,
      col_IDirectMusicObject_ParseDescriptor
  };
  
  /* IDirectMusicCollectionImpl IPersistStream part: */
  static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface,
          IStream *stream)
  {
      IDirectMusicCollectionImpl *This = impl_from_IPersistStream(iface);
      DMUS_PRIVATE_CHUNK chunk;
      DWORD StreamSize, StreamCount, ListSize[2], ListCount[2];
      LARGE_INTEGER liMove; /* used when skipping chunks */
      ULARGE_INTEGER dlibCollectionPosition, dlibInstrumentPosition, dlibWavePoolPosition;
  
      IStream_AddRef(stream); /* add count for later references */
      liMove.QuadPart = 0;
      IStream_Seek(stream, liMove, STREAM_SEEK_CUR, &dlibCollectionPosition); /* store offset, in case it'll be needed later */
      This->liCollectionPosition.QuadPart = dlibCollectionPosition.QuadPart;
      This->pStm = stream;
  
      IStream_Read(stream, &chunk, sizeof(FOURCC) + sizeof(DWORD), NULL);
      TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc(chunk.fccID), chunk.dwSize);
  
      if (chunk.fccID != FOURCC_RIFF) {
          TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
          liMove.QuadPart = chunk.dwSize;
          IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
          return E_FAIL;
      }
  
      IStream_Read(stream, &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 != FOURCC_DLS) {
          TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
          liMove.QuadPart = StreamSize;
          IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
          return E_FAIL;
      }
  
      TRACE_(dmfile)(": collection form\n");
      do {
          IStream_Read(stream, &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 FOURCC_COLH: {
                  TRACE_(dmfile)(": collection header chunk\n");
                  This->pHeader = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, chunk.dwSize);
                  IStream_Read(stream, This->pHeader, chunk.dwSize, NULL);
                  break;
              }
              case FOURCC_DLID: {
                  TRACE_(dmfile)(": DLID (GUID) chunk\n");
                  This->dmobj.desc.dwValidData |= DMUS_OBJ_OBJECT;
                  IStream_Read(stream, &This->dmobj.desc.guidObject, chunk.dwSize, NULL);
                  break;
              }
              case FOURCC_VERS: {
                  TRACE_(dmfile)(": version chunk\n");
                  This->dmobj.desc.dwValidData |= DMUS_OBJ_VERSION;
                  IStream_Read(stream, &This->dmobj.desc.vVersion, chunk.dwSize, NULL);
                  break;
              }
              case FOURCC_PTBL: {
                  TRACE_(dmfile)(": pool table chunk\n");
                  This->pPoolTable = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(POOLTABLE));
                  IStream_Read(stream, This->pPoolTable, sizeof(POOLTABLE), NULL);
                  chunk.dwSize -= sizeof(POOLTABLE);
                  This->pPoolCues = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, This->pPoolTable->cCues * sizeof(POOLCUE));
                  IStream_Read(stream, This->pPoolCues, chunk.dwSize, NULL);
                  break;
              }
              case FOURCC_LIST: {
                  IStream_Read(stream, &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) {
                      case DMUS_FOURCC_INFO_LIST: {
                          TRACE_(dmfile)(": INFO list\n");
                          do {
                              IStream_Read(stream, &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) {
                                  case mmioFOURCC('I','N','A','M'): {
                                      CHAR szName[DMUS_MAX_NAME];
                                      TRACE_(dmfile)(": name chunk\n");
                                      This->dmobj.desc.dwValidData |= DMUS_OBJ_NAME;
                                      IStream_Read(stream, szName, chunk.dwSize, NULL);
                                      MultiByteToWideChar(CP_ACP, 0, szName, -1, This->dmobj.desc.wszName, DMUS_MAX_NAME);
                                      if (even_or_odd(chunk.dwSize)) {
                                          ListCount[0]++;
                                          liMove.QuadPart = 1;
                                          IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                      }
                                      break;
                                  }
                                  case mmioFOURCC('I','A','R','T'): {
                                      TRACE_(dmfile)(": artist chunk (ignored)\n");
                                      if (even_or_odd(chunk.dwSize)) {
                                          ListCount[0]++;
                                          chunk.dwSize++;
                                      }
                                      liMove.QuadPart = chunk.dwSize;
                                      IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                      break;
                                  }
                                  case mmioFOURCC('I','C','O','P'): {
                                      TRACE_(dmfile)(": copyright chunk\n");
                                      This->szCopyright = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, chunk.dwSize);
                                      IStream_Read(stream, This->szCopyright, chunk.dwSize, NULL);
                                      if (even_or_odd(chunk.dwSize)) {
                                          ListCount[0]++;
                                          liMove.QuadPart = 1;
                                          IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                      }
                                      break;
                                  }
                                  case mmioFOURCC('I','S','B','J'): {
                                      TRACE_(dmfile)(": subject chunk (ignored)\n");
                                      if (even_or_odd(chunk.dwSize)) {
                                          ListCount[0]++;
                                          chunk.dwSize++;
                                      }
                                      liMove.QuadPart = chunk.dwSize;
                                      IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                      break;
                                  }
                                  case mmioFOURCC('I','C','M','T'): {
                                      TRACE_(dmfile)(": comment chunk (ignored)\n");
                                      if (even_or_odd(chunk.dwSize)) {
                                          ListCount[0]++;
                                          chunk.dwSize++;
                                      }
                                      liMove.QuadPart = chunk.dwSize;
                                      IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                      break;
                                  }
                                  default: {
                                      TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
                                      if (even_or_odd(chunk.dwSize)) {
                                          ListCount[0]++;
                                          chunk.dwSize++;
                                      }
                                      liMove.QuadPart = chunk.dwSize;
                                      IStream_Seek(stream, 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;
                      }
                      case FOURCC_WVPL: {
                          TRACE_(dmfile)(": wave pool list (mark & skip)\n");
                          liMove.QuadPart = 0;
                          IStream_Seek(stream, liMove, STREAM_SEEK_CUR, &dlibWavePoolPosition); /* store position */
                          This->liWavePoolTablePosition.QuadPart = dlibWavePoolPosition.QuadPart;
                          liMove.QuadPart = chunk.dwSize - sizeof(FOURCC);
                          IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                          break;
                      }
                      case FOURCC_LINS: {
                          TRACE_(dmfile)(": instruments list\n");
                          do {
                              IStream_Read(stream, &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) {
                                  case FOURCC_LIST: {
                                      IStream_Read(stream, &chunk.fccID, sizeof(FOURCC), NULL);
                                      TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunk.fccID));
                                      ListSize[1] = chunk.dwSize - sizeof(FOURCC);
                                      ListCount[1] = 0;
                                      switch (chunk.fccID) {
                                          case FOURCC_INS: {
                                              LPDMUS_PRIVATE_INSTRUMENTENTRY new_instrument = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_INSTRUMENTENTRY));
                                              TRACE_(dmfile)(": instrument list\n");
                                              /* Only way to create this one... even M$ does it discretely */
                                              DMUSIC_CreateDirectMusicInstrumentImpl(&IID_IDirectMusicInstrument, (void**)&new_instrument->pInstrument, NULL);
                                              {
                                                  IDirectMusicInstrumentImpl *instrument = impl_from_IDirectMusicInstrument(new_instrument->pInstrument);
                                                  /* Store offset and length, they will be needed when loading the instrument */
                                                  liMove.QuadPart = 0;
                                                  IStream_Seek(stream, liMove, STREAM_SEEK_CUR, &dlibInstrumentPosition);
                                                  instrument->liInstrumentPosition.QuadPart = dlibInstrumentPosition.QuadPart;
                                                  instrument->length = ListSize[1];
                                                  do {
                                                      IStream_Read(stream, &chunk, sizeof(FOURCC) + sizeof(DWORD), NULL);
                                                      ListCount[1] += sizeof(FOURCC) + sizeof(DWORD) + chunk.dwSize;
                                                      TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc(chunk.fccID), chunk.dwSize);
                                                      switch (chunk.fccID) {
                                                          case FOURCC_INSH: {
                                                              TRACE_(dmfile)(": instrument header chunk\n");
                                                              IStream_Read(stream, &instrument->header, chunk.dwSize, NULL);
                                                              break;
                                                          }
                                                          case FOURCC_DLID: {
                                                              TRACE_(dmfile)(": DLID (GUID) chunk\n");
                                                              IStream_Read(stream, &instrument->id, chunk.dwSize, NULL);
                                                              break;
                                                          }
                                                          case FOURCC_LIST: {
                                                              IStream_Read(stream, &chunk.fccID, sizeof(FOURCC), NULL);
                                                              TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunk.fccID));
                                                              switch (chunk.fccID) {
                                                                  default: {
                                                                      TRACE_(dmfile)(": unknown (skipping)\n");
                                                                      liMove.QuadPart = chunk.dwSize - sizeof(FOURCC);
                                                                      IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                                                      break;
                                                                  }
                                                              }
                                                              break;
                                                          }
                                                          default: {
                                                              TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
                                                              liMove.QuadPart = chunk.dwSize;
                                                              IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                                                              break;
                                                          }
                                                      }
                                                      TRACE_(dmfile)(": ListCount[1] = %d < ListSize[1] = %d\n", ListCount[1], ListSize[1]);
                                                  } while (ListCount[1] < ListSize[1]);
                                                  /* DEBUG: dumps whole instrument object tree: */
                                                  if (TRACE_ON(dmusic)) {
                                                      TRACE("*** IDirectMusicInstrument (%p) ***\n", instrument);
                                                      if (!IsEqualGUID(&instrument->id, &GUID_NULL))
                                                          TRACE(" - GUID = %s\n", debugstr_dmguid(&instrument->id));
                                                      TRACE(" - Instrument header:\n");
                                                      TRACE("    - cRegions: %d\n", instrument->header.cRegions);
                                                      TRACE("    - Locale:\n");
                                                      TRACE("       - ulBank: %d\n", instrument->header.Locale.ulBank);
                                                      TRACE("       - ulInstrument: %d\n", instrument->header.Locale.ulInstrument);
                                                      TRACE("       => dwPatch: %d\n", MIDILOCALE2Patch(&instrument->header.Locale));
                                                  }
                                                  list_add_tail(&This->Instruments, &new_instrument->entry);
                                              }
                                              break;
                                          }
                                      }
                                      break;
                                  }
                                  default: {
                                      TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
                                      liMove.QuadPart = chunk.dwSize;
                                      IStream_Seek(stream, 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(stream, liMove, STREAM_SEEK_CUR, NULL);
                          break;
                      }
                  }
                  break;
              }
              default: {
                  TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
                  liMove.QuadPart = chunk.dwSize;
                  IStream_Seek(stream, liMove, STREAM_SEEK_CUR, NULL);
                  break;
              }
          }
          TRACE_(dmfile)(": StreamCount = %d < StreamSize = %d\n", StreamCount, StreamSize);
      } while (StreamCount < StreamSize);
  
      TRACE_(dmfile)(": reading finished\n");
  
  
      /* DEBUG: dumps whole collection object tree: */
      if (TRACE_ON(dmusic)) {
          int r = 0;
          DMUS_PRIVATE_INSTRUMENTENTRY *tmpEntry;
          struct list *listEntry;
  
          TRACE("*** IDirectMusicCollection (%p) ***\n", &This->IDirectMusicCollection_iface);
          dump_DMUS_OBJECTDESC(&This->dmobj.desc);
  
          TRACE(" - Collection header:\n");
          TRACE("    - cInstruments: %d\n", This->pHeader->cInstruments);
          TRACE(" - Instruments:\n");
  
          LIST_FOR_EACH(listEntry, &This->Instruments) {
              tmpEntry = LIST_ENTRY( listEntry, DMUS_PRIVATE_INSTRUMENTENTRY, entry );
              TRACE("    - Instrument[%i]: %p\n", r, tmpEntry->pInstrument);
              r++;
          }
      }
  
      return S_OK;
  }
  
  static const IPersistStreamVtbl persiststream_vtbl = {
      dmobj_IPersistStream_QueryInterface,
      dmobj_IPersistStream_AddRef,
      dmobj_IPersistStream_Release,
      unimpl_IPersistStream_GetClassID,
      unimpl_IPersistStream_IsDirty,
      IPersistStreamImpl_Load,
      unimpl_IPersistStream_Save,
      unimpl_IPersistStream_GetSizeMax
  };
  
  
  HRESULT WINAPI DMUSIC_CreateDirectMusicCollectionImpl(LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter)
  {
  	IDirectMusicCollectionImpl* obj;
          HRESULT hr;
  
          *ppobj = NULL;
          if (pUnkOuter)
                  return CLASS_E_NOAGGREGATION;
  
  	obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicCollectionImpl));
          if (!obj)
                  return E_OUTOFMEMORY;
  
  	obj->IDirectMusicCollection_iface.lpVtbl = &DirectMusicCollection_Collection_Vtbl;
          obj->ref = 1;
          dmobject_init(&obj->dmobj, &CLSID_DirectMusicCollection,
                  (IUnknown*)&obj->IDirectMusicCollection_iface);
          obj->dmobj.IDirectMusicObject_iface.lpVtbl = &dmobject_vtbl;
          obj->dmobj.IPersistStream_iface.lpVtbl = &persiststream_vtbl;
  
  	list_init (&obj->Instruments);
  
          DMUSIC_LockModule();
          hr = IDirectMusicCollection_QueryInterface(&obj->IDirectMusicCollection_iface, lpcGUID, ppobj);
          IDirectMusicCollection_Release(&obj->IDirectMusicCollection_iface);
  
          return hr;
  }
  