dlls/dmime/segtriggertrack.c

   1 /* IDirectMusicSegTriggerTrack Implementation
   2  *
   3  * Copyright (C) 2003-2004 Rok Mandeljc
   4  * Copyright (C) 2003-2004 Raphael Junqueira
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (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 GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this program; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #include "dmime_private.h"
  22 #include "dmobject.h"
  23
  24 WINE_DEFAULT_DEBUG_CHANNEL(dmime);
  25 WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  26
  27 /*****************************************************************************
  28  * IDirectMusicSegTriggerTrack implementation
  29  */
  30 typedef struct IDirectMusicSegTriggerTrack {
  31     IDirectMusicTrack8 IDirectMusicTrack8_iface;
  32     struct dmobject dmobj;/* IPersistStream only */
  33     LONG ref;
  34     struct list Items;
  35 } IDirectMusicSegTriggerTrack;
  36
  37 /* IDirectMusicSegTriggerTrack IDirectMusicTrack8 part: */
  38 static inline IDirectMusicSegTriggerTrack *impl_from_IDirectMusicTrack8(IDirectMusicTrack8 *iface)
  39 {
  40     return CONTAINING_RECORD(iface, IDirectMusicSegTriggerTrack, IDirectMusicTrack8_iface);
  41 }
  42
  43 static HRESULT WINAPI IDirectMusicTrack8Impl_QueryInterface(IDirectMusicTrack8 *iface, REFIID riid,
  44         void **ret_iface)
  45 {
  46     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
  47
  48     TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ret_iface);
  49
  50     *ret_iface = NULL;
  51
  52     if (IsEqualIID(riid, &IID_IUnknown) || IsEqualIID(riid, &IID_IDirectMusicTrack) ||
  53             IsEqualIID(riid, &IID_IDirectMusicTrack8))
  54         *ret_iface = iface;
  55     else if (IsEqualIID(riid, &IID_IPersistStream))
  56         *ret_iface = &This->dmobj.IPersistStream_iface;
  57     else {
  58         WARN("(%p, %s, %p): not found\n", This, debugstr_dmguid(riid), ret_iface);
  59         return E_NOINTERFACE;
  60     }
  61
  62     IUnknown_AddRef((IUnknown*)*ret_iface);
  63     return S_OK;
  64 }
  65
  66 static ULONG WINAPI IDirectMusicTrack8Impl_AddRef(IDirectMusicTrack8 *iface)
  67 {
  68     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
  69     LONG ref = InterlockedIncrement(&This->ref);
  70
  71     TRACE("(%p) ref=%d\n", This, ref);
  72
  73     return ref;
  74 }
  75
  76 static ULONG WINAPI IDirectMusicTrack8Impl_Release(IDirectMusicTrack8 *iface)
  77 {
  78     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
  79     LONG ref = InterlockedDecrement(&This->ref);
  80
  81     TRACE("(%p) ref=%d\n", This, ref);
  82
  83     if (!ref) {
  84         HeapFree(GetProcessHeap(), 0, This);
  85         DMIME_UnlockModule();
  86     }
  87
  88     return ref;
  89 }
  90
  91 static HRESULT WINAPI IDirectMusicTrack8Impl_Init(IDirectMusicTrack8 *iface,
  92         IDirectMusicSegment *pSegment)
  93 {
  94         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
  95         FIXME("(%p, %p): stub\n", This, pSegment);
  96         return S_OK;
  97 }
  98
  99 static HRESULT WINAPI IDirectMusicTrack8Impl_InitPlay(IDirectMusicTrack8 *iface,
 100         IDirectMusicSegmentState *pSegmentState, IDirectMusicPerformance *pPerformance,
 101         void **ppStateData, DWORD dwVirtualTrack8ID, DWORD dwFlags)
 102 {
 103         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 104         FIXME("(%p, %p, %p, %p, %d, %d): stub\n", This, pSegmentState, pPerformance, ppStateData, dwVirtualTrack8ID, dwFlags);
 105         return S_OK;
 106 }
 107
 108 static HRESULT WINAPI IDirectMusicTrack8Impl_EndPlay(IDirectMusicTrack8 *iface, void *pStateData)
 109 {
 110         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 111         FIXME("(%p, %p): stub\n", This, pStateData);
 112         return S_OK;
 113 }
 114
 115 static HRESULT WINAPI IDirectMusicTrack8Impl_Play(IDirectMusicTrack8 *iface, void *pStateData,
 116         MUSIC_TIME mtStart, MUSIC_TIME mtEnd, MUSIC_TIME mtOffset, DWORD dwFlags,
 117         IDirectMusicPerformance *pPerf, IDirectMusicSegmentState *pSegSt, DWORD dwVirtualID)
 118 {
 119         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 120         FIXME("(%p, %p, %d, %d, %d, %d, %p, %p, %d): stub\n", This, pStateData, mtStart, mtEnd, mtOffset, dwFlags, pPerf, pSegSt, dwVirtualID);
 121         return S_OK;
 122 }
 123
 124 static HRESULT WINAPI IDirectMusicTrack8Impl_GetParam(IDirectMusicTrack8 *iface, REFGUID rguidType,
 125         MUSIC_TIME mtTime, MUSIC_TIME *pmtNext, void *pParam)
 126 {
 127         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 128         FIXME("(%p, %s, %d, %p, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pmtNext, pParam);
 129         return S_OK;
 130 }
 131
 132 static HRESULT WINAPI IDirectMusicTrack8Impl_SetParam(IDirectMusicTrack8 *iface, REFGUID rguidType,
 133         MUSIC_TIME mtTime, void *pParam)
 134 {
 135         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 136         FIXME("(%p, %s, %d, %p): stub\n", This, debugstr_dmguid(rguidType), mtTime, pParam);
 137         return S_OK;
 138 }
 139
 140 static HRESULT WINAPI IDirectMusicTrack8Impl_IsParamSupported(IDirectMusicTrack8 *iface,
 141         REFGUID rguidType)
 142 {
 143         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 144
 145         TRACE("(%p, %s)\n", This, debugstr_dmguid(rguidType));
 146         /* didn't find any params */
 147         TRACE("param unsupported\n");
 148         return DMUS_E_TYPE_UNSUPPORTED;
 149 }
 150
 151 static HRESULT WINAPI IDirectMusicTrack8Impl_AddNotificationType(IDirectMusicTrack8 *iface,
 152         REFGUID notiftype)
 153 {
 154     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 155
 156     TRACE("(%p, %s): method not implemented\n", This, debugstr_dmguid(notiftype));
 157     return E_NOTIMPL;
 158 }
 159
 160 static HRESULT WINAPI IDirectMusicTrack8Impl_RemoveNotificationType(IDirectMusicTrack8 *iface,
 161         REFGUID notiftype)
 162 {
 163     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 164
 165     TRACE("(%p, %s): method not implemented\n", This, debugstr_dmguid(notiftype));
 166     return E_NOTIMPL;
 167 }
 168
 169 static HRESULT WINAPI IDirectMusicTrack8Impl_Clone(IDirectMusicTrack8 *iface, MUSIC_TIME mtStart,
 170         MUSIC_TIME mtEnd, IDirectMusicTrack **ppTrack)
 171 {
 172         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 173         FIXME("(%p, %d, %d, %p): stub\n", This, mtStart, mtEnd, ppTrack);
 174         return S_OK;
 175 }
 176
 177 static HRESULT WINAPI IDirectMusicTrack8Impl_PlayEx(IDirectMusicTrack8 *iface, void *pStateData,
 178         REFERENCE_TIME rtStart, REFERENCE_TIME rtEnd, REFERENCE_TIME rtOffset, DWORD dwFlags,
 179         IDirectMusicPerformance *pPerf, IDirectMusicSegmentState *pSegSt, DWORD dwVirtualID)
 180 {
 181         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 182         FIXME("(%p, %p, 0x%s, 0x%s, 0x%s, %d, %p, %p, %d): stub\n", This, pStateData, wine_dbgstr_longlong(rtStart),
 183             wine_dbgstr_longlong(rtEnd), wine_dbgstr_longlong(rtOffset), dwFlags, pPerf, pSegSt, dwVirtualID);
 184         return S_OK;
 185 }
 186
 187 static HRESULT WINAPI IDirectMusicTrack8Impl_GetParamEx(IDirectMusicTrack8 *iface,
 188         REFGUID rguidType, REFERENCE_TIME rtTime, REFERENCE_TIME *prtNext, void *pParam,
 189         void *pStateData, DWORD dwFlags)
 190 {
 191         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 192         FIXME("(%p, %s, 0x%s, %p, %p, %p, %d): stub\n", This, debugstr_dmguid(rguidType),
 193             wine_dbgstr_longlong(rtTime), prtNext, pParam, pStateData, dwFlags);
 194         return S_OK;
 195 }
 196
 197 static HRESULT WINAPI IDirectMusicTrack8Impl_SetParamEx(IDirectMusicTrack8 *iface,
 198         REFGUID rguidType, REFERENCE_TIME rtTime, void *pParam, void *pStateData, DWORD dwFlags)
 199 {
 200         IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 201         FIXME("(%p, %s, 0x%s, %p, %p, %d): stub\n", This, debugstr_dmguid(rguidType),
 202             wine_dbgstr_longlong(rtTime), pParam, pStateData, dwFlags);
 203         return S_OK;
 204 }
 205
 206 static HRESULT WINAPI IDirectMusicTrack8Impl_Compose(IDirectMusicTrack8 *iface, IUnknown *context,
 207         DWORD trackgroup, IDirectMusicTrack **track)
 208 {
 209     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 210
 211     TRACE("(%p, %p, %d, %p): method not implemented\n", This, context, trackgroup, track);
 212     return E_NOTIMPL;
 213 }
 214
 215 static HRESULT WINAPI IDirectMusicTrack8Impl_Join(IDirectMusicTrack8 *iface,
 216         IDirectMusicTrack *newtrack, MUSIC_TIME join, IUnknown *context, DWORD trackgroup,
 217         IDirectMusicTrack **resulttrack)
 218 {
 219     IDirectMusicSegTriggerTrack *This = impl_from_IDirectMusicTrack8(iface);
 220     TRACE("(%p, %p, %d, %p, %d, %p): method not implemented\n", This, newtrack, join, context,
 221             trackgroup, resulttrack);
 222     return E_NOTIMPL;
 223 }
 224
 225 static const IDirectMusicTrack8Vtbl dmtrack8_vtbl = {
 226     IDirectMusicTrack8Impl_QueryInterface,
 227     IDirectMusicTrack8Impl_AddRef,
 228     IDirectMusicTrack8Impl_Release,
 229     IDirectMusicTrack8Impl_Init,
 230     IDirectMusicTrack8Impl_InitPlay,
 231     IDirectMusicTrack8Impl_EndPlay,
 232     IDirectMusicTrack8Impl_Play,
 233     IDirectMusicTrack8Impl_GetParam,
 234     IDirectMusicTrack8Impl_SetParam,
 235     IDirectMusicTrack8Impl_IsParamSupported,
 236     IDirectMusicTrack8Impl_AddNotificationType,
 237     IDirectMusicTrack8Impl_RemoveNotificationType,
 238     IDirectMusicTrack8Impl_Clone,
 239     IDirectMusicTrack8Impl_PlayEx,
 240     IDirectMusicTrack8Impl_GetParamEx,
 241     IDirectMusicTrack8Impl_SetParamEx,
 242     IDirectMusicTrack8Impl_Compose,
 243     IDirectMusicTrack8Impl_Join
 244 };
 245
 246 static HRESULT parse_segment(IDirectMusicSegTriggerTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
 247         IStream *pStm)
 248 {
 249   DMUS_PRIVATE_CHUNK Chunk;
 250   DWORD ListSize[3], ListCount[3];
 251   LARGE_INTEGER liMove; /* used when skipping chunks */
 252   HRESULT hr;
 253
 254   IDirectMusicObject* pObject = NULL;
 255   LPDMUS_PRIVATE_SEGMENT_ITEM pNewItem = NULL;
 256
 257   if (pChunk->fccID != DMUS_FOURCC_SEGMENT_LIST) {
 258     ERR_(dmfile)(": %s chunk should be a SEGMENT list\n", debugstr_fourcc (pChunk->fccID));
 259     return E_FAIL;
 260   }
 261
 262   ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
 263   ListCount[0] = 0;
 264
 265   do {
 266     IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 267     ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 268     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 269     switch (Chunk.fccID) {
 270     case DMUS_FOURCC_SEGMENTITEM_CHUNK: {
 271       TRACE_(dmfile)(": segment item chunk\n");
 272       /** alloc new item entry */
 273       pNewItem = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_SEGMENT_ITEM));
 274       if (!pNewItem)
 275         return  E_OUTOFMEMORY;
 276
 277       IStream_Read (pStm, &pNewItem->header, sizeof(DMUS_IO_SEGMENT_ITEM_HEADER), NULL);
 278       TRACE_(dmfile)(" - lTimePhysical: %u\n", pNewItem->header.lTimeLogical);
 279       TRACE_(dmfile)(" - lTimePhysical: %u\n", pNewItem->header.lTimePhysical);
 280       TRACE_(dmfile)(" - dwPlayFlags: 0x%08x\n", pNewItem->header.dwPlayFlags);
 281       TRACE_(dmfile)(" - dwFlags: 0x%08x\n", pNewItem->header.dwFlags);
 282       list_add_tail (&This->Items, &pNewItem->entry);
 283       break;
 284     }
 285     case DMUS_FOURCC_SEGMENTITEMNAME_CHUNK: {
 286       TRACE_(dmfile)(": segment item name chunk\n");
 287       if (!pNewItem) {
 288         ERR(": pNewItem not allocated, bad chunk order?\n");
 289         return E_FAIL;
 290       }
 291       IStream_Read (pStm, pNewItem->wszName, Chunk.dwSize, NULL);
 292       TRACE_(dmfile)(" - name: %s\n", debugstr_w(pNewItem->wszName));
 293       break;
 294     }
 295     case FOURCC_LIST: {
 296       IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 297       TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 298       ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
 299       ListCount[1] = 0;
 300       switch (Chunk.fccID) {
 301       case DMUS_FOURCC_REF_LIST: {
 302         FIXME_(dmfile)(": DMRF (DM References) list\n");
 303         hr = IDirectMusicUtils_IPersistStream_ParseReference(&This->dmobj.IPersistStream_iface,
 304                 &Chunk, pStm, &pObject);
 305         if (FAILED(hr)) {
 306           ERR(": could not load Reference\n");
 307           return hr;
 308         }
 309         if (!pNewItem) {
 310           ERR(": pNewItem not allocated, bad chunk order?\n");
 311           return E_FAIL;
 312         }
 313         pNewItem->pObject = pObject;
 314         break;
 315       }
 316       default: {
 317         TRACE_(dmfile)(": unknown (skipping)\n");
 318         liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
 319         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 320         break;
 321       }
 322       }
 323       break;
 324     }
 325     default: {
 326       TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 327       liMove.QuadPart = Chunk.dwSize;
 328       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 329       break;
 330     }
 331     }
 332     TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 333   } while (ListCount[0] < ListSize[0]);
 334
 335   return S_OK;
 336 }
 337
 338 static HRESULT parse_segments_list(IDirectMusicSegTriggerTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
 339         IStream *pStm)
 340 {
 341   HRESULT hr = E_FAIL;
 342   DMUS_PRIVATE_CHUNK Chunk;
 343   DWORD ListSize[3], ListCount[3];
 344   LARGE_INTEGER liMove; /* used when skipping chunks */
 345
 346   if (pChunk->fccID != DMUS_FOURCC_SEGMENTS_LIST) {
 347     ERR_(dmfile)(": %s chunk should be a SEGMENTS list\n", debugstr_fourcc (pChunk->fccID));
 348     return E_FAIL;
 349   }
 350
 351   ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
 352   ListCount[0] = 0;
 353
 354   do {
 355     IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 356     ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 357     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 358     switch (Chunk.fccID) {
 359     case FOURCC_LIST: {
 360       IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 361       TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 362       ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
 363       ListCount[1] = 0;
 364       switch (Chunk.fccID) {
 365       case DMUS_FOURCC_SEGMENT_LIST: {
 366         TRACE_(dmfile)(": SEGMENT list\n");
 367         hr = parse_segment(This, &Chunk, pStm);
 368         if (FAILED(hr)) return hr;
 369         break;
 370       }
 371       default: {
 372         TRACE_(dmfile)(": unknown (skipping)\n");
 373         liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
 374         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 375         break;
 376       }
 377       }
 378       break;
 379     }
 380     default: {
 381       TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 382       liMove.QuadPart = Chunk.dwSize;
 383       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 384       break;
 385     }
 386     }
 387     TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 388   } while (ListCount[0] < ListSize[0]);
 389
 390   return S_OK;
 391 }
 392
 393 static HRESULT parse_seqtrack_list(IDirectMusicSegTriggerTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
 394         IStream *pStm)
 395 {
 396   HRESULT hr = E_FAIL;
 397   DMUS_PRIVATE_CHUNK Chunk;
 398   DWORD ListSize[3], ListCount[3];
 399   LARGE_INTEGER liMove; /* used when skipping chunks */
 400
 401   if (pChunk->fccID != DMUS_FOURCC_SEGTRACK_LIST) {
 402     ERR_(dmfile)(": %s chunk should be a SEGTRACK list\n", debugstr_fourcc (pChunk->fccID));
 403     return E_FAIL;
 404   }
 405
 406   ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
 407   ListCount[0] = 0;
 408
 409   do {
 410     IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 411     ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 412     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 413     switch (Chunk.fccID) {
 414     case DMUS_FOURCC_SEGTRACK_CHUNK: {
 415       TRACE_(dmfile)(": segment trigger track chunk\n");
 416       liMove.QuadPart = Chunk.dwSize;
 417       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 418       break;
 419     }
 420     case FOURCC_LIST: {
 421       IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 422       TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 423       ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
 424       ListCount[1] = 0;
 425       switch (Chunk.fccID) {
 426       case DMUS_FOURCC_SEGMENTS_LIST: {
 427         TRACE_(dmfile)(": SEGMENTS list\n");
 428         hr = parse_segments_list(This, &Chunk, pStm);
 429         if (FAILED(hr)) return hr;
 430         break;
 431       }
 432       default: {
 433         TRACE_(dmfile)(": unknown (skipping)\n");
 434         liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
 435         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 436         break;
 437       }
 438       }
 439       break;
 440     }
 441     default: {
 442       TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 443       liMove.QuadPart = Chunk.dwSize;
 444       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 445       break;
 446     }
 447     }
 448     TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 449   } while (ListCount[0] < ListSize[0]);
 450
 451   return S_OK;
 452 }
 453
 454 static inline IDirectMusicSegTriggerTrack *impl_from_IPersistStream(IPersistStream *iface)
 455 {
 456     return CONTAINING_RECORD(iface, IDirectMusicSegTriggerTrack, dmobj.IPersistStream_iface);
 457 }
 458
 459 static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface, IStream *pStm)
 460 {
 461   IDirectMusicSegTriggerTrack *This = impl_from_IPersistStream(iface);
 462   DMUS_PRIVATE_CHUNK Chunk;
 463   LARGE_INTEGER liMove;
 464   HRESULT hr;
 465
 466   TRACE("(%p, %p): Loading\n", This, pStm);
 467
 468   IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 469   TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 470   switch (Chunk.fccID) {
 471   case FOURCC_LIST: {
 472     IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 473     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 474     switch (Chunk.fccID) {
 475     case DMUS_FOURCC_SEGTRACK_LIST: {
 476       TRACE_(dmfile)(": segment trigger track list\n");
 477       hr = parse_seqtrack_list(This, &Chunk, pStm);
 478       if (FAILED(hr)) return hr;
 479       break;
 480     }
 481     default: {
 482       TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 483       liMove.QuadPart = Chunk.dwSize;
 484       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 485       return E_FAIL;
 486     }
 487     }
 488     TRACE_(dmfile)(": reading finished\n");
 489     break;
 490   }
 491   default: {
 492     TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 493     liMove.QuadPart = Chunk.dwSize;
 494     IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 495     return E_FAIL;
 496   }
 497   }
 498
 499   return S_OK;
 500 }
 501
 502 static const IPersistStreamVtbl persiststream_vtbl = {
 503     dmobj_IPersistStream_QueryInterface,
 504     dmobj_IPersistStream_AddRef,
 505     dmobj_IPersistStream_Release,
 506     dmobj_IPersistStream_GetClassID,
 507     unimpl_IPersistStream_IsDirty,
 508     IPersistStreamImpl_Load,
 509     unimpl_IPersistStream_Save,
 510     unimpl_IPersistStream_GetSizeMax
 511 };
 512
 513 /* for ClassFactory */
 514 HRESULT WINAPI create_dmsegtriggertrack(REFIID lpcGUID, void **ppobj)
 515 {
 516     IDirectMusicSegTriggerTrack *track;
 517     HRESULT hr;
 518
 519     track = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*track));
 520     if (!track) {
 521         *ppobj = NULL;
 522         return E_OUTOFMEMORY;
 523     }
 524     track->IDirectMusicTrack8_iface.lpVtbl = &dmtrack8_vtbl;
 525     track->ref = 1;
 526     dmobject_init(&track->dmobj, &CLSID_DirectMusicSegTriggerTrack,
 527                   (IUnknown *)&track->IDirectMusicTrack8_iface);
 528     track->dmobj.IPersistStream_iface.lpVtbl = &persiststream_vtbl;
 529     list_init(&track->Items);
 530
 531     DMIME_LockModule();
 532     hr = IDirectMusicTrack8_QueryInterface(&track->IDirectMusicTrack8_iface, lpcGUID, ppobj);
 533     IDirectMusicTrack8_Release(&track->IDirectMusicTrack8_iface);
 534
 535     return hr;
 536 }