dlls/dmime/tempotrack.c

   1 /* IDirectMusicTempoTrack Implementation
   2  *
   3  * Copyright (C) 2003-2004 Rok Mandeljc
   4  * Copyright (C) 2004 Raphael Junqueira
   5  *
   6  * This program is free software; you can redistribute it and/or modify
   7  * it under the terms of the GNU General Public License as published by
   8  * the Free Software Foundation; either version 2 of the License, or
   9  * (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU Library General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU General Public License
  17  * along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  19  */
  20
  21 #include "dmime_private.h"
  22
  23 WINE_DEFAULT_DEBUG_CHANNEL(dmime);
  24 WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  25
  26 /*****************************************************************************
  27  * IDirectMusicTempoTrack implementation
  28  */
  29 /* IDirectMusicTempoTrack IUnknown part: */
  30 HRESULT WINAPI IDirectMusicTempoTrack_IUnknown_QueryInterface (LPUNKNOWN iface, REFIID riid, LPVOID *ppobj) {
  31   ICOM_THIS_MULTI(IDirectMusicTempoTrack, UnknownVtbl, iface);
  32   TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
  33
  34   if (IsEqualIID (riid, &IID_IUnknown)) {
  35     *ppobj = (LPUNKNOWN)&This->UnknownVtbl;
  36     IDirectMusicTempoTrack_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  37     return S_OK;
  38   } else if (IsEqualIID (riid, &IID_IDirectMusicTrack)
  39              || IsEqualIID (riid, &IID_IDirectMusicTrack8)) {
  40     *ppobj = (LPDIRECTMUSICTRACK8)&This->TrackVtbl;
  41     IDirectMusicTempoTrack_IDirectMusicTrack_AddRef ((LPDIRECTMUSICTRACK8)&This->TrackVtbl);
  42     return S_OK;
  43   } else if (IsEqualIID (riid, &IID_IPersistStream)) {
  44     *ppobj = (LPPERSISTSTREAM)&This->PersistStreamVtbl;
  45     IDirectMusicTempoTrack_IPersistStream_AddRef ((LPPERSISTSTREAM)&This->PersistStreamVtbl);
  46     return S_OK;
  47   }
  48
  49   WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ppobj);
  50   return E_NOINTERFACE;
  51 }
  52
  53 ULONG WINAPI IDirectMusicTempoTrack_IUnknown_AddRef (LPUNKNOWN iface) {
  54   ICOM_THIS_MULTI(IDirectMusicTempoTrack, UnknownVtbl, iface);
  55   TRACE("(%p): AddRef from %ld\n", This, This->ref);
  56   return ++(This->ref);
  57 }
  58
  59 ULONG WINAPI IDirectMusicTempoTrack_IUnknown_Release (LPUNKNOWN iface) {
  60   ICOM_THIS_MULTI(IDirectMusicTempoTrack, UnknownVtbl, iface);
  61   ULONG ref = --This->ref;
  62   TRACE("(%p): ReleaseRef to %ld\n", This, This->ref);
  63   if (ref == 0) {
  64     HeapFree(GetProcessHeap(), 0, This);
  65   }
  66   return ref;
  67 }
  68
  69 IUnknownVtbl DirectMusicTempoTrack_Unknown_Vtbl = {
  70   IDirectMusicTempoTrack_IUnknown_QueryInterface,
  71   IDirectMusicTempoTrack_IUnknown_AddRef,
  72   IDirectMusicTempoTrack_IUnknown_Release
  73 };
  74
  75 /* IDirectMusicTempoTrack IDirectMusicTrack8 part: */
  76 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_QueryInterface (LPDIRECTMUSICTRACK8 iface, REFIID riid, LPVOID *ppobj) {
  77   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
  78   return IDirectMusicTempoTrack_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
  79 }
  80
  81 ULONG WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_AddRef (LPDIRECTMUSICTRACK8 iface) {
  82   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
  83   return IDirectMusicTempoTrack_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  84 }
  85
  86 ULONG WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_Release (LPDIRECTMUSICTRACK8 iface) {
  87   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
  88   return IDirectMusicTempoTrack_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
  89 }
  90
  91 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_Init (LPDIRECTMUSICTRACK8 iface, IDirectMusicSegment* pSegment)
  92 {
  93   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
  94   TRACE("(%p, %p): nothing to do here\n", This, pSegment);
  95   return S_OK;
  96 }
  97
  98 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_InitPlay (LPDIRECTMUSICTRACK8 iface, IDirectMusicSegmentState* pSegmentState, IDirectMusicPerformance* pPerformance, void** ppStateData, DWORD dwVirtualTrack8ID, DWORD dwFlags)
  99 {
 100   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 101
 102   LPDMUS_PRIVATE_TEMPO_PLAY_STATE pState = NULL;
 103
 104   FIXME("(%p, %p, %p, %p, %ld, %ld): semi-stub\n", This, pSegmentState, pPerformance, ppStateData, dwVirtualTrack8ID, dwFlags);
 105
 106   pState = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_TEMPO_PLAY_STATE));
 107   if (NULL == pState) {
 108     ERR(": no more memory\n");
 109     return E_OUTOFMEMORY;
 110   }
 111   /** TODO real fill usefull datas */
 112   pState->dummy = 0;
 113   *ppStateData = pState;
 114   return S_OK;
 115 }
 116
 117 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_EndPlay (LPDIRECTMUSICTRACK8 iface, void* pStateData)
 118 {
 119   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 120
 121   LPDMUS_PRIVATE_TEMPO_PLAY_STATE pState = pStateData;
 122
 123   FIXME("(%p, %p): semi-stub\n", This, pStateData);
 124
 125   if (NULL == pStateData) {
 126     return E_POINTER;
 127   }
 128   /** TODO real clean up */
 129   HeapFree(GetProcessHeap(), 0, pState);
 130   return S_OK;
 131 }
 132
 133 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_Play (LPDIRECTMUSICTRACK8 iface, void* pStateData, MUSIC_TIME mtStart, MUSIC_TIME mtEnd, MUSIC_TIME mtOffset, DWORD dwFlags, IDirectMusicPerformance* pPerf, IDirectMusicSegmentState* pSegSt, DWORD dwVirtualID)
 134 {
 135   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 136   FIXME("(%p, %p, %ld, %ld, %ld, %ld, %p, %p, %ld): stub\n", This, pStateData, mtStart, mtEnd, mtOffset, dwFlags, pPerf, pSegSt, dwVirtualID);
 137   /** should use IDirectMusicPerformance_SendPMsg here */
 138   return S_OK;
 139 }
 140
 141 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_GetParam (LPDIRECTMUSICTRACK8 iface, REFGUID rguidType, MUSIC_TIME mtTime, MUSIC_TIME* pmtNext, void* pParam) {
 142   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 143
 144   HRESULT hr = S_OK;
 145   struct list* pEntry = NULL;
 146   LPDMUS_PRIVATE_TEMPO_ITEM pIt = NULL;
 147   DMUS_TEMPO_PARAM* prm = pParam;
 148
 149   FIXME("(%p, %s, %ld, %p, %p): almost stub\n", This, debugstr_dmguid(rguidType), mtTime, pmtNext, pParam);
 150
 151   if (NULL == pParam) {
 152     return E_POINTER;
 153   }
 154
 155   hr = IDirectMusicTempoTrack_IDirectMusicTrack_IsParamSupported (iface, rguidType);
 156   if (FAILED(hr)) {
 157     return hr;
 158   }
 159   if (FALSE == This->enabled) {
 160     return DMUS_E_TYPE_DISABLED;
 161   }
 162
 163   if (NULL != pmtNext) *pmtNext = 0;
 164   prm->mtTime = 0;
 165   prm->dblTempo = 0.123456;
 166
 167   LIST_FOR_EACH (pEntry, &This->Items) {
 168     pIt = LIST_ENTRY(pEntry, DMUS_PRIVATE_TEMPO_ITEM, entry);
 169     /*TRACE(" - %p -> 0x%lx,%p\n", pIt, pIt->item.lTime, pIt->item.dblTempo);*/
 170     if (pIt->item.lTime <= mtTime) {
 171       MUSIC_TIME ofs = pIt->item.lTime - mtTime;
 172       if (ofs > prm->mtTime) {
 173         prm->mtTime = ofs;
 174         prm->dblTempo = pIt->item.dblTempo;
 175       }
 176       if (NULL != pmtNext && pIt->item.lTime > mtTime) {
 177         if (pIt->item.lTime < *pmtNext) {
 178           *pmtNext = pIt->item.lTime;
 179         }
 180       }
 181     }
 182   }
 183
 184   if (0.123456 == prm->dblTempo) {
 185     return DMUS_E_NOT_FOUND;
 186   }
 187   return S_OK;
 188 }
 189
 190 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_SetParam (LPDIRECTMUSICTRACK8 iface, REFGUID rguidType, MUSIC_TIME mtTime, void* pParam) {
 191         ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 192         FIXME("(%p, %s, %ld, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pParam);
 193         return S_OK;
 194 }
 195
 196 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_IsParamSupported (LPDIRECTMUSICTRACK8 iface, REFGUID rguidType) {
 197   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 198
 199   TRACE("(%p, %s): ", This, debugstr_dmguid(rguidType));
 200   if (IsEqualGUID (rguidType, &GUID_DisableTempo)
 201       || IsEqualGUID (rguidType, &GUID_EnableTempo)
 202       || IsEqualGUID (rguidType, &GUID_TempoParam)) {
 203     TRACE("param supported\n");
 204     return S_OK;
 205   }
 206   if (FALSE == This->enabled) {
 207     return DMUS_E_TYPE_DISABLED;
 208   }
 209   TRACE("param unsupported\n");
 210   return DMUS_E_TYPE_UNSUPPORTED;
 211 }
 212
 213 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_AddNotificationType (LPDIRECTMUSICTRACK8 iface, REFGUID rguidNotificationType) {
 214   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 215   FIXME("(%p, %s): stub\n", This, debugstr_dmguid(rguidNotificationType));
 216   return S_OK;
 217 }
 218
 219 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_RemoveNotificationType (LPDIRECTMUSICTRACK8 iface, REFGUID rguidNotificationType) {
 220   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 221   FIXME("(%p, %s): stub\n", This, debugstr_dmguid(rguidNotificationType));
 222   return S_OK;
 223 }
 224
 225 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_Clone (LPDIRECTMUSICTRACK8 iface, MUSIC_TIME mtStart, MUSIC_TIME mtEnd, IDirectMusicTrack** ppTrack) {
 226   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 227   FIXME("(%p, %ld, %ld, %p): stub\n", This, mtStart, mtEnd, ppTrack);
 228   return S_OK;
 229 }
 230
 231 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_PlayEx (LPDIRECTMUSICTRACK8 iface, void* pStateData, REFERENCE_TIME rtStart, REFERENCE_TIME rtEnd, REFERENCE_TIME rtOffset, DWORD dwFlags, IDirectMusicPerformance* pPerf, IDirectMusicSegmentState* pSegSt, DWORD dwVirtualID) {
 232   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 233   FIXME("(%p, %p, %lli, %lli, %lli, %ld, %p, %p, %ld): stub\n", This, pStateData, rtStart, rtEnd, rtOffset, dwFlags, pPerf, pSegSt, dwVirtualID);
 234   return S_OK;
 235 }
 236
 237 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_GetParamEx (LPDIRECTMUSICTRACK8 iface, REFGUID rguidType, REFERENCE_TIME rtTime, REFERENCE_TIME* prtNext, void* pParam, void* pStateData, DWORD dwFlags) {
 238   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 239   FIXME("(%p, %s, %lli, %p, %p, %p, %ld): stub\n", This, debugstr_dmguid(rguidType), rtTime, prtNext, pParam, pStateData, dwFlags);
 240   return S_OK;
 241 }
 242
 243 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_SetParamEx (LPDIRECTMUSICTRACK8 iface, REFGUID rguidType, REFERENCE_TIME rtTime, void* pParam, void* pStateData, DWORD dwFlags) {
 244   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 245   FIXME("(%p, %s, %lli, %p, %p, %ld): stub\n", This, debugstr_dmguid(rguidType), rtTime, pParam, pStateData, dwFlags);
 246   return S_OK;
 247 }
 248
 249 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_Compose (LPDIRECTMUSICTRACK8 iface, IUnknown* pContext, DWORD dwTrackGroup, IDirectMusicTrack** ppResultTrack) {
 250   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 251   FIXME("(%p, %p, %ld, %p): stub\n", This, pContext, dwTrackGroup, ppResultTrack);
 252   return S_OK;
 253 }
 254
 255 HRESULT WINAPI IDirectMusicTempoTrack_IDirectMusicTrack_Join (LPDIRECTMUSICTRACK8 iface, IDirectMusicTrack* pNewTrack, MUSIC_TIME mtJoin, IUnknown* pContext, DWORD dwTrackGroup, IDirectMusicTrack** ppResultTrack) {
 256   ICOM_THIS_MULTI(IDirectMusicTempoTrack, TrackVtbl, iface);
 257   FIXME("(%p, %p, %ld, %p, %ld, %p): stub\n", This, pNewTrack, mtJoin, pContext, dwTrackGroup, ppResultTrack);
 258   return S_OK;
 259 }
 260
 261 IDirectMusicTrack8Vtbl DirectMusicTempoTrack_Track_Vtbl = {
 262   IDirectMusicTempoTrack_IDirectMusicTrack_QueryInterface,
 263   IDirectMusicTempoTrack_IDirectMusicTrack_AddRef,
 264   IDirectMusicTempoTrack_IDirectMusicTrack_Release,
 265   IDirectMusicTempoTrack_IDirectMusicTrack_Init,
 266   IDirectMusicTempoTrack_IDirectMusicTrack_InitPlay,
 267   IDirectMusicTempoTrack_IDirectMusicTrack_EndPlay,
 268   IDirectMusicTempoTrack_IDirectMusicTrack_Play,
 269   IDirectMusicTempoTrack_IDirectMusicTrack_GetParam,
 270   IDirectMusicTempoTrack_IDirectMusicTrack_SetParam,
 271   IDirectMusicTempoTrack_IDirectMusicTrack_IsParamSupported,
 272   IDirectMusicTempoTrack_IDirectMusicTrack_AddNotificationType,
 273   IDirectMusicTempoTrack_IDirectMusicTrack_RemoveNotificationType,
 274   IDirectMusicTempoTrack_IDirectMusicTrack_Clone,
 275   IDirectMusicTempoTrack_IDirectMusicTrack_PlayEx,
 276   IDirectMusicTempoTrack_IDirectMusicTrack_GetParamEx,
 277   IDirectMusicTempoTrack_IDirectMusicTrack_SetParamEx,
 278   IDirectMusicTempoTrack_IDirectMusicTrack_Compose,
 279   IDirectMusicTempoTrack_IDirectMusicTrack_Join
 280 };
 281
 282 /* IDirectMusicTempoTrack IPersistStream part: */
 283 HRESULT WINAPI IDirectMusicTempoTrack_IPersistStream_QueryInterface (LPPERSISTSTREAM iface, REFIID riid, LPVOID *ppobj) {
 284   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 285   return IDirectMusicTempoTrack_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
 286 }
 287
 288 ULONG WINAPI IDirectMusicTempoTrack_IPersistStream_AddRef (LPPERSISTSTREAM iface) {
 289   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 290   return IDirectMusicTempoTrack_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
 291 }
 292
 293 ULONG WINAPI IDirectMusicTempoTrack_IPersistStream_Release (LPPERSISTSTREAM iface) {
 294   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 295   return IDirectMusicTempoTrack_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 296 }
 297
 298 HRESULT WINAPI IDirectMusicTempoTrack_IPersistStream_GetClassID (LPPERSISTSTREAM iface, CLSID* pClassID) {
 299   ICOM_THIS_MULTI(IDirectMusicSegment8Impl, PersistStreamVtbl, iface);
 300   TRACE("(%p, %p)\n", This, pClassID);
 301   memcpy(pClassID, &CLSID_DirectMusicTempoTrack, sizeof(CLSID));
 302   return S_OK;
 303 }
 304
 305 HRESULT WINAPI IDirectMusicTempoTrack_IPersistStream_IsDirty (LPPERSISTSTREAM iface) {
 306   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 307   FIXME("(%p): stub, always S_FALSE\n", This);
 308   return S_FALSE;
 309 }
 310
 311 HRESULT WINAPI IDirectMusicTempoTrack_IPersistStream_Load (LPPERSISTSTREAM iface, IStream* pStm) {
 312   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 313   DMUS_PRIVATE_CHUNK Chunk;
 314   DWORD StreamSize, StreamCount;
 315   LARGE_INTEGER liMove;
 316   DMUS_IO_TEMPO_ITEM item;
 317   LPDMUS_PRIVATE_TEMPO_ITEM pNewItem = NULL;
 318   DWORD nItem = 0;
 319   FIXME("(%p, %p): Loading not fully implemented yet\n", This, pStm);
 320
 321 #if 1
 322   IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 323   TRACE_(dmfile)(": %s chunk (size = %ld)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 324   switch (Chunk.fccID) {
 325   case DMUS_FOURCC_TEMPO_TRACK: {
 326     TRACE_(dmfile)(": Tempo track\n");
 327 #if 1
 328     IStream_Read (pStm, &StreamSize, sizeof(DWORD), NULL);
 329     StreamSize -= sizeof(DWORD);
 330     StreamCount = 0;
 331     TRACE_(dmfile)(" - sizeof(DMUS_IO_TEMPO_ITEM): %lu (chunkSize = %lu)\n", StreamSize, Chunk.dwSize - sizeof(DWORD));
 332     do {
 333       IStream_Read (pStm, &item, sizeof(item), NULL);
 334       ++nItem;
 335       TRACE_(dmfile)("DMUS_IO_TEMPO_ITEM #%ld\n", nItem);
 336       TRACE_(dmfile)(" - lTime = %lu\n", item.lTime);
 337       TRACE_(dmfile)(" - dblTempo = %g\n", item.dblTempo);
 338       pNewItem = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_TEMPO_ITEM));
 339       if (NULL == pNewItem) {
 340         ERR(": no more memory\n");
 341         return  E_OUTOFMEMORY;
 342       }
 343       memcpy(&pNewItem->item, &item, sizeof(DMUS_IO_TEMPO_ITEM));
 344       list_add_tail (&This->Items, &pNewItem->entry);
 345       pNewItem = NULL;
 346       StreamCount += sizeof(item);
 347       TRACE_(dmfile)(": StreamCount[0] = %ld < StreamSize[0] = %ld\n", StreamCount, StreamSize);
 348     } while (StreamCount < StreamSize);
 349 #else
 350     liMove.QuadPart = Chunk.dwSize;
 351     IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 352 #endif
 353     break;
 354   }
 355   default: {
 356     TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 357     liMove.QuadPart = Chunk.dwSize;
 358     IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 359     return E_FAIL;
 360   }
 361   }
 362 #endif
 363
 364   return S_OK;
 365 }
 366
 367 HRESULT WINAPI IDirectMusicTempoTrack_IPersistStream_Save (LPPERSISTSTREAM iface, IStream* pStm, BOOL fClearDirty) {
 368   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 369   FIXME("(%p): Saving not implemented yet\n", This);
 370   return E_NOTIMPL;
 371 }
 372
 373 HRESULT WINAPI IDirectMusicTempoTrack_IPersistStream_GetSizeMax (LPPERSISTSTREAM iface, ULARGE_INTEGER* pcbSize) {
 374   ICOM_THIS_MULTI(IDirectMusicTempoTrack, PersistStreamVtbl, iface);
 375   FIXME("(%p, %p): stub\n", This, pcbSize);
 376   return E_NOTIMPL;
 377 }
 378
 379 IPersistStreamVtbl DirectMusicTempoTrack_PersistStream_Vtbl = {
 380   IDirectMusicTempoTrack_IPersistStream_QueryInterface,
 381   IDirectMusicTempoTrack_IPersistStream_AddRef,
 382   IDirectMusicTempoTrack_IPersistStream_Release,
 383   IDirectMusicTempoTrack_IPersistStream_GetClassID,
 384   IDirectMusicTempoTrack_IPersistStream_IsDirty,
 385   IDirectMusicTempoTrack_IPersistStream_Load,
 386   IDirectMusicTempoTrack_IPersistStream_Save,
 387   IDirectMusicTempoTrack_IPersistStream_GetSizeMax
 388 };
 389
 390 /* for ClassFactory */
 391 HRESULT WINAPI DMUSIC_CreateDirectMusicTempoTrack (LPCGUID lpcGUID, LPVOID *ppobj, LPUNKNOWN pUnkOuter) {
 392   IDirectMusicTempoTrack* track;
 393
 394   track = HeapAlloc (GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicTempoTrack));
 395   if (NULL == track) {
 396     *ppobj = (LPVOID) NULL;
 397     return E_OUTOFMEMORY;
 398   }
 399   track->UnknownVtbl = &DirectMusicTempoTrack_Unknown_Vtbl;
 400   track->TrackVtbl = &DirectMusicTempoTrack_Track_Vtbl;
 401   track->PersistStreamVtbl = &DirectMusicTempoTrack_PersistStream_Vtbl;
 402   track->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
 403   DM_STRUCT_INIT(track->pDesc);
 404   track->pDesc->dwValidData |= DMUS_OBJ_CLASS;
 405   memcpy (&track->pDesc->guidClass, &CLSID_DirectMusicTempoTrack, sizeof (CLSID));
 406   track->ref = 0; /* will be inited by QueryInterface */
 407   track->enabled = TRUE;
 408   list_init (&track->Items);
 409
 410   return IDirectMusicTempoTrack_IUnknown_QueryInterface ((LPUNKNOWN)&track->UnknownVtbl, lpcGUID, ppobj);
 411 }