dlls/dmband/bandtrack.c

   1 /* IDirectMusicBandTrack Implementation
   2  *
   3  * Copyright (C) 2003-2004 Rok Mandeljc
   4  *
   5  * This program is free software; you can redistribute it and/or
   6  * modify it under the terms of the GNU Lesser General Public
   7  * License as published by the Free Software Foundation; either
   8  * version 2.1 of the License, or (at your option) any later version.
   9  *
  10  * This program is distributed in the hope that it will be useful,
  11  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  12  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  13  * Lesser General Public License for more details.
  14  *
  15  * You should have received a copy of the GNU Lesser General Public
  16  * License along with this program; if not, write to the Free Software
  17  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  18  */
  19
  20 #include "dmband_private.h"
  21 #include "dmobject.h"
  22
  23 WINE_DEFAULT_DEBUG_CHANNEL(dmband);
  24 WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  25
  26 /*****************************************************************************
  27  * IDirectMusicBandTrack implementation
  28  */
  29 typedef struct IDirectMusicBandTrack {
  30     IDirectMusicTrack8 IDirectMusicTrack8_iface;
  31     struct dmobject dmobj; /* IPersistStream only */
  32     LONG ref;
  33     DMUS_IO_BAND_TRACK_HEADER header;
  34     struct list Bands;
  35 } IDirectMusicBandTrack;
  36
  37 /* IDirectMusicBandTrack IDirectMusicTrack8 part: */
  38 static inline IDirectMusicBandTrack *impl_from_IDirectMusicTrack8(IDirectMusicTrack8 *iface)
  39 {
  40     return CONTAINING_RECORD(iface, IDirectMusicBandTrack, IDirectMusicTrack8_iface);
  41 }
  42
  43 static HRESULT WINAPI band_track_QueryInterface(IDirectMusicTrack8 *iface, REFIID riid,
  44         void **ret_iface)
  45 {
  46     IDirectMusicBandTrack *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 band_track_AddRef(IDirectMusicTrack8 *iface)
  67 {
  68     IDirectMusicBandTrack *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 band_track_Release(IDirectMusicTrack8 *iface)
  77 {
  78     IDirectMusicBandTrack *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         DMBAND_UnlockModule();
  86     }
  87
  88     return ref;
  89 }
  90
  91 static HRESULT WINAPI band_track_Init(IDirectMusicTrack8 *iface, IDirectMusicSegment *pSegment)
  92 {
  93   IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
  94   FIXME("(%p, %p): stub\n", This, pSegment);
  95   return S_OK;
  96 }
  97
  98 static HRESULT WINAPI band_track_InitPlay(IDirectMusicTrack8 *iface,
  99         IDirectMusicSegmentState *segment_state, IDirectMusicPerformance *performance,
 100         void **state_data, DWORD virtual_track8id, DWORD flags)
 101 {
 102     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 103
 104     FIXME("(%p, %p, %p, %p, %d, %x): stub\n", This, segment_state, performance, state_data, virtual_track8id, flags);
 105
 106     return S_OK;
 107 }
 108
 109 static HRESULT WINAPI band_track_EndPlay(IDirectMusicTrack8 *iface, void *pStateData)
 110 {
 111   IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 112   FIXME("(%p, %p): stub\n", This, pStateData);
 113   return S_OK;
 114 }
 115
 116 static HRESULT WINAPI band_track_Play(IDirectMusicTrack8 *iface, void *state_data,
 117         MUSIC_TIME mtStart, MUSIC_TIME mtEnd, MUSIC_TIME mtOffset, DWORD flags,
 118         IDirectMusicPerformance *performance, IDirectMusicSegmentState *segment_state,
 119         DWORD virtual_id)
 120 {
 121     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 122
 123     FIXME("(%p, %p, %d, %d, %d, %x, %p, %p, %d): semi-stub\n", This, state_data, mtStart, mtEnd, mtOffset, flags, performance, segment_state, virtual_id);
 124
 125     /* Sends following pMSG:
 126        - DMUS_PATCH_PMSG
 127        - DMUS_TRANSPOSE_PMSG
 128        - DMUS_CHANNEL_PRIORITY_PMSG
 129        - DMUS_MIDI_PMSG
 130     */
 131
 132     return S_OK;
 133 }
 134
 135 static HRESULT WINAPI band_track_GetParam(IDirectMusicTrack8 *iface, REFGUID type, MUSIC_TIME time,
 136         MUSIC_TIME *next, void *param)
 137 {
 138     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 139
 140     TRACE("(%p, %s, %d, %p, %p)\n", This, debugstr_dmguid(type), time, next, param);
 141
 142     if (!type)
 143         return E_POINTER;
 144     if (!IsEqualGUID(type, &GUID_BandParam))
 145         return DMUS_E_GET_UNSUPPORTED;
 146
 147     FIXME("GUID_BandParam not handled yet\n");
 148
 149     return S_OK;
 150 }
 151
 152 static HRESULT WINAPI band_track_SetParam(IDirectMusicTrack8 *iface, REFGUID type, MUSIC_TIME time,
 153         void *param)
 154 {
 155     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 156
 157     TRACE("(%p, %s, %d, %p)\n", This, debugstr_dmguid(type), time, param);
 158
 159     if (!type)
 160         return E_POINTER;
 161     if (FAILED(IDirectMusicTrack8_IsParamSupported(iface, type)))
 162         return DMUS_E_TYPE_UNSUPPORTED;
 163
 164     if (IsEqualGUID(type, &GUID_BandParam))
 165         FIXME("GUID_BandParam not handled yet\n");
 166     else if (IsEqualGUID(type, &GUID_Clear_All_Bands))
 167         FIXME("GUID_Clear_All_Bands not handled yet\n");
 168     else if (IsEqualGUID(type, &GUID_ConnectToDLSCollection))
 169         FIXME("GUID_ConnectToDLSCollection not handled yet\n");
 170     else if (IsEqualGUID(type, &GUID_Disable_Auto_Download))
 171         FIXME("GUID_Disable_Auto_Download not handled yet\n");
 172     else if (IsEqualGUID(type, &GUID_Download))
 173         FIXME("GUID_Download not handled yet\n");
 174     else if (IsEqualGUID(type, &GUID_DownloadToAudioPath))
 175         FIXME("GUID_DownloadToAudioPath not handled yet\n");
 176     else if (IsEqualGUID(type, &GUID_Enable_Auto_Download))
 177         FIXME("GUID_Enable_Auto_Download not handled yet\n");
 178     else if (IsEqualGUID(type, &GUID_IDirectMusicBand))
 179         FIXME("GUID_IDirectMusicBand not handled yet\n");
 180     else if (IsEqualGUID(type, &GUID_StandardMIDIFile))
 181         FIXME("GUID_StandardMIDIFile not handled yet\n");
 182     else if (IsEqualGUID(type, &GUID_UnloadFromAudioPath))
 183         FIXME("GUID_UnloadFromAudioPath not handled yet\n");
 184
 185     return S_OK;
 186 }
 187
 188 static HRESULT WINAPI band_track_IsParamSupported(IDirectMusicTrack8 *iface, REFGUID rguidType)
 189 {
 190   IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 191
 192   TRACE("(%p, %s)\n", This, debugstr_dmguid(rguidType));
 193
 194   if (!rguidType)
 195     return E_POINTER;
 196
 197   if (IsEqualGUID (rguidType, &GUID_BandParam)
 198       || IsEqualGUID (rguidType, &GUID_Clear_All_Bands)
 199       || IsEqualGUID (rguidType, &GUID_ConnectToDLSCollection)
 200       || IsEqualGUID (rguidType, &GUID_Disable_Auto_Download)
 201       || IsEqualGUID (rguidType, &GUID_Download)
 202       || IsEqualGUID (rguidType, &GUID_DownloadToAudioPath)
 203       || IsEqualGUID (rguidType, &GUID_Enable_Auto_Download)
 204       || IsEqualGUID (rguidType, &GUID_IDirectMusicBand)
 205       || IsEqualGUID (rguidType, &GUID_StandardMIDIFile)
 206       || IsEqualGUID (rguidType, &GUID_Unload)
 207       || IsEqualGUID (rguidType, &GUID_UnloadFromAudioPath)) {
 208     TRACE("param supported\n");
 209     return S_OK;
 210   }
 211
 212   TRACE("param unsupported\n");
 213   return DMUS_E_TYPE_UNSUPPORTED;
 214 }
 215
 216 static HRESULT WINAPI band_track_AddNotificationType(IDirectMusicTrack8 *iface, REFGUID notiftype)
 217 {
 218     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 219
 220     TRACE("(%p, %s): method not implemented\n", This, debugstr_dmguid(notiftype));
 221     return E_NOTIMPL;
 222 }
 223
 224 static HRESULT WINAPI band_track_RemoveNotificationType(IDirectMusicTrack8 *iface,
 225         REFGUID notiftype)
 226 {
 227     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 228
 229     TRACE("(%p, %s): method not implemented\n", This, debugstr_dmguid(notiftype));
 230     return E_NOTIMPL;
 231 }
 232
 233 static HRESULT WINAPI band_track_Clone(IDirectMusicTrack8 *iface, MUSIC_TIME mtStart,
 234         MUSIC_TIME mtEnd, IDirectMusicTrack **ppTrack)
 235 {
 236   IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 237   FIXME("(%p, %d, %d, %p): stub\n", This, mtStart, mtEnd, ppTrack);
 238   return S_OK;
 239 }
 240
 241 static HRESULT WINAPI band_track_PlayEx(IDirectMusicTrack8 *iface, void *state_data,
 242         REFERENCE_TIME rtStart, REFERENCE_TIME rtEnd, REFERENCE_TIME rtOffset, DWORD flags,
 243         IDirectMusicPerformance *performance, IDirectMusicSegmentState *segment_state,
 244         DWORD virtual_id)
 245 {
 246     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 247
 248     FIXME("(%p, %p, 0x%s, 0x%s, 0x%s, %x, %p, %p, %d): stub\n", This, state_data, wine_dbgstr_longlong(rtStart),
 249         wine_dbgstr_longlong(rtEnd), wine_dbgstr_longlong(rtOffset), flags, performance, segment_state, virtual_id);
 250
 251     return S_OK;
 252 }
 253
 254 static HRESULT WINAPI band_track_GetParamEx(IDirectMusicTrack8 *iface,
 255         REFGUID rguidType, REFERENCE_TIME rtTime, REFERENCE_TIME *rtNext, void *param,
 256         void *state_data, DWORD flags)
 257 {
 258     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 259
 260     FIXME("(%p, %s, 0x%s, %p, %p, %p, %x): stub\n", This, debugstr_dmguid(rguidType),
 261         wine_dbgstr_longlong(rtTime), rtNext, param, state_data, flags);
 262
 263     return S_OK;
 264 }
 265
 266 static HRESULT WINAPI band_track_SetParamEx(IDirectMusicTrack8 *iface, REFGUID rguidType,
 267         REFERENCE_TIME rtTime, void *param, void *state_data, DWORD flags)
 268 {
 269     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 270
 271     FIXME("(%p, %s, 0x%s, %p, %p, %x): stub\n", This, debugstr_dmguid(rguidType),
 272         wine_dbgstr_longlong(rtTime), param, state_data, flags);
 273
 274     return S_OK;
 275 }
 276
 277 static HRESULT WINAPI band_track_Compose(IDirectMusicTrack8 *iface, IUnknown *context,
 278         DWORD trackgroup, IDirectMusicTrack **track)
 279 {
 280     IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 281
 282     TRACE("(%p, %p, %d, %p): method not implemented\n", This, context, trackgroup, track);
 283     return E_NOTIMPL;
 284 }
 285
 286 static HRESULT WINAPI band_track_Join(IDirectMusicTrack8 *iface, IDirectMusicTrack *pNewTrack,
 287         MUSIC_TIME mtJoin, IUnknown *pContext, DWORD dwTrackGroup,
 288         IDirectMusicTrack **ppResultTrack)
 289 {
 290   IDirectMusicBandTrack *This = impl_from_IDirectMusicTrack8(iface);
 291   FIXME("(%p, %p, %d, %p, %d, %p): stub\n", This, pNewTrack, mtJoin, pContext, dwTrackGroup, ppResultTrack);
 292   return S_OK;
 293 }
 294
 295 static const IDirectMusicTrack8Vtbl dmtrack8_vtbl = {
 296     band_track_QueryInterface,
 297     band_track_AddRef,
 298     band_track_Release,
 299     band_track_Init,
 300     band_track_InitPlay,
 301     band_track_EndPlay,
 302     band_track_Play,
 303     band_track_GetParam,
 304     band_track_SetParam,
 305     band_track_IsParamSupported,
 306     band_track_AddNotificationType,
 307     band_track_RemoveNotificationType,
 308     band_track_Clone,
 309     band_track_PlayEx,
 310     band_track_GetParamEx,
 311     band_track_SetParamEx,
 312     band_track_Compose,
 313     band_track_Join
 314 };
 315
 316 /* IDirectMusicBandTrack IPersistStream part: */
 317 static HRESULT load_band(IDirectMusicBandTrack *This, IStream *pClonedStream,
 318         IDirectMusicBand **ppBand, DMUS_PRIVATE_BAND_ITEM_HEADER *pHeader)
 319 {
 320   HRESULT hr = E_FAIL;
 321   IPersistStream* pPersistStream = NULL;
 322
 323   hr = CoCreateInstance (&CLSID_DirectMusicBand, NULL, CLSCTX_INPROC_SERVER, &IID_IDirectMusicBand, (LPVOID*) ppBand);
 324   if (FAILED(hr)) {
 325     ERR(": could not create object\n");
 326     return hr;
 327   }
 328   /* acquire PersistStream interface */
 329   hr = IDirectMusicBand_QueryInterface (*ppBand, &IID_IPersistStream, (LPVOID*) &pPersistStream);
 330   if (FAILED(hr)) {
 331     ERR(": could not acquire IPersistStream\n");
 332     return hr;
 333   }
 334   /* load */
 335   hr = IPersistStream_Load (pPersistStream, pClonedStream);
 336   if (FAILED(hr)) {
 337     ERR(": failed to load object\n");
 338     return hr;
 339   }
 340
 341   /* release all loading-related stuff */
 342   IPersistStream_Release (pPersistStream);
 343
 344   /*
 345    * @TODO insert pBand into This
 346    */
 347   if (SUCCEEDED(hr)) {
 348     LPDMUS_PRIVATE_BAND pNewBand = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_BAND));
 349     if (NULL == pNewBand) {
 350       ERR(": no more memory\n");
 351       return  E_OUTOFMEMORY;
 352     }
 353     pNewBand->BandHeader = *pHeader;
 354     pNewBand->band = *ppBand;
 355     IDirectMusicBand_AddRef(*ppBand);
 356     list_add_tail (&This->Bands, &pNewBand->entry);
 357   }
 358
 359   return S_OK;
 360 }
 361
 362 static HRESULT parse_bands_list(IDirectMusicBandTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
 363         IStream *pStm)
 364 {
 365   HRESULT hr = E_FAIL;
 366   DMUS_PRIVATE_CHUNK Chunk;
 367   DWORD StreamSize, ListSize[3], ListCount[3];
 368   LARGE_INTEGER liMove; /* used when skipping chunks */
 369
 370   IDirectMusicBand* pBand = NULL;
 371   DMUS_PRIVATE_BAND_ITEM_HEADER header;
 372
 373   memset(&header, 0, sizeof header);
 374
 375   if (pChunk->fccID != DMUS_FOURCC_BANDS_LIST) {
 376     ERR_(dmfile)(": %s chunk should be a BANDS list\n", debugstr_fourcc (pChunk->fccID));
 377     return E_FAIL;
 378   }
 379
 380   ListSize[0] = pChunk->dwSize - sizeof(FOURCC);
 381   ListCount[0] = 0;
 382
 383   do {
 384     IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 385     ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 386     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 387     switch (Chunk.fccID) {
 388     case FOURCC_LIST: {
 389       IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 390       TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 391       ListSize[1] = Chunk.dwSize - sizeof(FOURCC);
 392       ListCount[1] = 0;
 393       do {
 394         IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 395         ListCount[1] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 396         TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 397         switch (Chunk.fccID) {
 398         case DMUS_FOURCC_BANDITEM_CHUNK: {
 399           DMUS_IO_BAND_ITEM_HEADER tmp_header;
 400           TRACE_(dmfile)(": Band Item chunk v1\n");
 401
 402           IStream_Read (pStm, &tmp_header, sizeof(DMUS_IO_BAND_ITEM_HEADER), NULL);
 403           TRACE_(dmfile)(" - lBandTime: %u\n", tmp_header.lBandTime);
 404
 405           header.dwVersion = 1;
 406           header.lBandTime = tmp_header.lBandTime;
 407           break;
 408         }
 409         case DMUS_FOURCC_BANDITEM_CHUNK2: {
 410           DMUS_IO_BAND_ITEM_HEADER2 tmp_header2;
 411           TRACE_(dmfile)(": Band Item chunk v2\n");
 412
 413           IStream_Read (pStm, &tmp_header2, sizeof(DMUS_IO_BAND_ITEM_HEADER2), NULL);
 414           TRACE_(dmfile)(" - lBandTimeLogical: %u\n", tmp_header2.lBandTimeLogical);
 415           TRACE_(dmfile)(" - lBandTimePhysical: %u\n", tmp_header2.lBandTimePhysical);
 416
 417           header.dwVersion = 2;
 418           header.lBandTimeLogical = tmp_header2.lBandTimeLogical;
 419           header.lBandTimePhysical = tmp_header2.lBandTimePhysical;
 420           break;
 421         }
 422         case FOURCC_RIFF: {
 423           IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 424           TRACE_(dmfile)(": RIFF chunk of type %s\n", debugstr_fourcc(Chunk.fccID));
 425           StreamSize = Chunk.dwSize - sizeof(FOURCC);
 426           switch (Chunk.fccID) {
 427           case DMUS_FOURCC_BAND_FORM: {
 428             ULARGE_INTEGER liOrigPos;
 429             TRACE_(dmfile)(": BAND RIFF\n");
 430
 431             liMove.QuadPart = 0;
 432             IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, &liOrigPos);
 433
 434             liMove.QuadPart -= sizeof(FOURCC) + (sizeof(FOURCC)+sizeof(DWORD));
 435             IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 436
 437             hr = load_band(This, pStm, &pBand, &header);
 438             if (FAILED(hr)) {
 439               ERR(": could not load track\n");
 440               return hr;
 441             }
 442             liMove.QuadPart = (LONGLONG)liOrigPos.QuadPart;
 443             IStream_Seek (pStm, liMove, STREAM_SEEK_SET, NULL);
 444
 445             IDirectMusicTrack_Release(pBand); pBand = NULL; /* now we can release at as it inserted */
 446
 447             /** now safe move the cursor */
 448             liMove.QuadPart = StreamSize;
 449             IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 450             break;
 451           }
 452           default: {
 453             TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 454             liMove.QuadPart = StreamSize;
 455             IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 456             break;
 457           }
 458           }
 459           break;
 460         }
 461         default: {
 462           TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 463           liMove.QuadPart = Chunk.dwSize;
 464           IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 465           break;
 466          }
 467         }
 468         TRACE_(dmfile)(": ListCount[1] = %d < ListSize[1] = %d\n", ListCount[1], ListSize[1]);
 469       } while (ListCount[1] < ListSize[1]);
 470       break;
 471     }
 472     default: {
 473       TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 474       liMove.QuadPart = Chunk.dwSize;
 475       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 476       break;
 477     }
 478     }
 479     TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 480   } while (ListCount[0] < ListSize[0]);
 481
 482   return S_OK;
 483 }
 484
 485 static HRESULT parse_bandtrack_form(IDirectMusicBandTrack *This, DMUS_PRIVATE_CHUNK *pChunk,
 486         IStream *pStm)
 487 {
 488   HRESULT hr = E_FAIL;
 489   DMUS_PRIVATE_CHUNK Chunk;
 490   DWORD StreamSize, StreamCount, ListSize[3], ListCount[3];
 491   LARGE_INTEGER liMove; /* used when skipping chunks */
 492
 493   if (pChunk->fccID != DMUS_FOURCC_BANDTRACK_FORM) {
 494     ERR_(dmfile)(": %s chunk should be a BANDTRACK form\n", debugstr_fourcc (pChunk->fccID));
 495     return E_FAIL;
 496   }
 497
 498   StreamSize = pChunk->dwSize - sizeof(FOURCC);
 499   StreamCount = 0;
 500
 501   do {
 502     IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 503     StreamCount += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 504     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 505
 506     hr = IDirectMusicUtils_IPersistStream_ParseDescGeneric(&Chunk, pStm, &This->dmobj.desc);
 507     if (FAILED(hr)) return hr;
 508
 509     if (hr == S_FALSE) {
 510       switch (Chunk.fccID) {
 511       case DMUS_FOURCC_BANDTRACK_CHUNK: {
 512         TRACE_(dmfile)(": BandTrack chunk\n");
 513         IStream_Read (pStm, &This->header, sizeof(DMUS_IO_BAND_TRACK_HEADER), NULL);
 514         TRACE_(dmfile)(" - bAutoDownload: %u\n", This->header.bAutoDownload);
 515         break;
 516       }
 517       case FOURCC_LIST: {
 518         IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 519         TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 520         ListSize[0] = Chunk.dwSize - sizeof(FOURCC);
 521         ListCount[0] = 0;
 522         switch (Chunk.fccID) {
 523         case DMUS_FOURCC_UNFO_LIST: {
 524           TRACE_(dmfile)(": UNFO list\n");
 525           do {
 526             IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 527             ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 528             TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 529
 530             hr = IDirectMusicUtils_IPersistStream_ParseUNFOGeneric(&Chunk, pStm, &This->dmobj.desc);
 531             if (FAILED(hr)) return hr;
 532
 533             if (hr == S_FALSE) {
 534               switch (Chunk.fccID) {
 535               default: {
 536                 TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 537                 liMove.QuadPart = Chunk.dwSize;
 538                 IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 539                 break;
 540               }
 541               }
 542             }
 543             TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 544           } while (ListCount[0] < ListSize[0]);
 545           break;
 546         }
 547         case DMUS_FOURCC_BANDS_LIST: {
 548           TRACE_(dmfile)(": TRACK list\n");
 549           hr = parse_bands_list(This, &Chunk, pStm);
 550           if (FAILED(hr)) return hr;
 551           break;
 552         }
 553         default: {
 554           TRACE_(dmfile)(": unknown (skipping)\n");
 555           liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
 556           IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 557           break;
 558         }
 559         }
 560         break;
 561       }
 562       default: {
 563         TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 564         liMove.QuadPart = Chunk.dwSize;
 565         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 566         break;
 567       }
 568       }
 569     }
 570     TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
 571   } while (StreamCount < StreamSize);
 572
 573   return S_OK;
 574 }
 575
 576 static inline IDirectMusicBandTrack *impl_from_IPersistStream(IPersistStream *iface)
 577 {
 578     return CONTAINING_RECORD(iface, IDirectMusicBandTrack, dmobj.IPersistStream_iface);
 579 }
 580
 581 static HRESULT WINAPI IPersistStreamImpl_Load(IPersistStream *iface, IStream *pStm)
 582 {
 583   IDirectMusicBandTrack *This = impl_from_IPersistStream(iface);
 584   DMUS_PRIVATE_CHUNK Chunk;
 585   LARGE_INTEGER liMove;
 586   HRESULT hr;
 587
 588   TRACE("(%p, %p): Loading\n", This, pStm);
 589
 590   IStream_Read (pStm, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 591   TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 592   switch (Chunk.fccID) {
 593   case FOURCC_RIFF: {
 594     IStream_Read (pStm, &Chunk.fccID, sizeof(FOURCC), NULL);
 595     TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 596     switch (Chunk.fccID) {
 597     case DMUS_FOURCC_BANDTRACK_FORM: {
 598       TRACE_(dmfile)(": Band track form\n");
 599       hr = parse_bandtrack_form(This, &Chunk, pStm);
 600       if (FAILED(hr)) return hr;
 601       break;
 602     }
 603     default: {
 604       TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 605       liMove.QuadPart = Chunk.dwSize;
 606       IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 607       return E_FAIL;
 608     }
 609     }
 610     TRACE_(dmfile)(": reading finished\n");
 611     break;
 612   }
 613   default: {
 614     TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 615     liMove.QuadPart = Chunk.dwSize;
 616     IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 617     return E_FAIL;
 618   }
 619   }
 620
 621   return S_OK;
 622 }
 623
 624 static const IPersistStreamVtbl persiststream_vtbl = {
 625     dmobj_IPersistStream_QueryInterface,
 626     dmobj_IPersistStream_AddRef,
 627     dmobj_IPersistStream_Release,
 628     dmobj_IPersistStream_GetClassID,
 629     unimpl_IPersistStream_IsDirty,
 630     IPersistStreamImpl_Load,
 631     unimpl_IPersistStream_Save,
 632     unimpl_IPersistStream_GetSizeMax
 633 };
 634
 635 /* for ClassFactory */
 636 HRESULT WINAPI create_dmbandtrack(REFIID lpcGUID, void **ppobj)
 637 {
 638     IDirectMusicBandTrack *track;
 639     HRESULT hr;
 640
 641     track = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(*track));
 642     if (!track) {
 643         *ppobj = NULL;
 644         return E_OUTOFMEMORY;
 645     }
 646     track->IDirectMusicTrack8_iface.lpVtbl = &dmtrack8_vtbl;
 647     track->ref = 1;
 648     dmobject_init(&track->dmobj, &CLSID_DirectMusicBandTrack,
 649             (IUnknown *)&track->IDirectMusicTrack8_iface);
 650     track->dmobj.IPersistStream_iface.lpVtbl = &persiststream_vtbl;
 651     list_init (&track->Bands);
 652
 653     DMBAND_LockModule();
 654     hr = IDirectMusicTrack8_QueryInterface(&track->IDirectMusicTrack8_iface, lpcGUID, ppobj);
 655     IDirectMusicTrack8_Release(&track->IDirectMusicTrack8_iface);
 656
 657     return hr;
 658 }