git.oblomov.eu Git - wine/blob - dlls/dmime/graph.c

   1 /* IDirectMusicGraph
   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 "dmime_private.h"
  21
  22 WINE_DEFAULT_DEBUG_CHANNEL(dmime);
  23 WINE_DECLARE_DEBUG_CHANNEL(dmfile);
  24
  25 /*****************************************************************************
  26  * IDirectMusicGraphImpl implementation
  27  */
  28 /* IDirectMusicGraphImpl IUnknown part: */
  29 static HRESULT WINAPI IDirectMusicGraphImpl_IUnknown_QueryInterface (LPUNKNOWN iface, REFIID riid, LPVOID *ppobj) {
  30         ICOM_THIS_MULTI(IDirectMusicGraphImpl, UnknownVtbl, iface);
  31         TRACE("(%p, %s, %p)\n", This, debugstr_guid(riid), ppobj);
  32
  33         if (IsEqualIID (riid, &IID_IUnknown)) {
  34                 *ppobj = &This->UnknownVtbl;
  35                 IUnknown_AddRef (iface);
  36                 return S_OK;
  37         } else if (IsEqualIID (riid, &IID_IDirectMusicGraph)) {
  38                 *ppobj = &This->GraphVtbl;
  39                 IUnknown_AddRef (iface);
  40                 return S_OK;
  41         } else if (IsEqualIID (riid, &IID_IDirectMusicObject)) {
  42                 *ppobj = &This->ObjectVtbl;
  43                 IUnknown_AddRef (iface);
  44                 return S_OK;
  45         } else if (IsEqualIID (riid, &IID_IPersistStream)) {
  46                 *ppobj = &This->PersistStreamVtbl;
  47                 IUnknown_AddRef (iface);
  48                 return S_OK;
  49         }
  50
  51         WARN("(%p, %s, %p): not found\n", This, debugstr_guid(riid), ppobj);
  52         return E_NOINTERFACE;
  53 }
  54
  55 static ULONG WINAPI IDirectMusicGraphImpl_IUnknown_AddRef (LPUNKNOWN iface) {
  56         ICOM_THIS_MULTI(IDirectMusicGraphImpl, UnknownVtbl, iface);
  57         ULONG ref = InterlockedIncrement(&This->ref);
  58
  59         TRACE("(%p): AddRef from %d\n", This, ref - 1);
  60
  61         DMIME_LockModule();
  62
  63         return ref;
  64 }
  65
  66 static ULONG WINAPI IDirectMusicGraphImpl_IUnknown_Release (LPUNKNOWN iface) {
  67         ICOM_THIS_MULTI(IDirectMusicGraphImpl, UnknownVtbl, iface);
  68         ULONG ref = InterlockedDecrement(&This->ref);
  69         TRACE("(%p): ReleaseRef to %d\n", This, ref);
  70
  71         if (ref == 0) {
  72                 HeapFree(GetProcessHeap(), 0, This);
  73         }
  74
  75         DMIME_UnlockModule();
  76
  77         return ref;
  78 }
  79
  80 static const IUnknownVtbl DirectMusicGraph_Unknown_Vtbl = {
  81         IDirectMusicGraphImpl_IUnknown_QueryInterface,
  82         IDirectMusicGraphImpl_IUnknown_AddRef,
  83         IDirectMusicGraphImpl_IUnknown_Release
  84 };
  85
  86 /* IDirectMusicGraphImpl IDirectMusicGraph part: */
  87 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_QueryInterface (LPDIRECTMUSICGRAPH iface, REFIID riid, LPVOID *ppobj) {
  88         ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
  89         return IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
  90 }
  91
  92 static ULONG WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_AddRef (LPDIRECTMUSICGRAPH iface) {
  93         ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
  94         return IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
  95 }
  96
  97 static ULONG WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_Release (LPDIRECTMUSICGRAPH iface) {
  98         ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
  99         return IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 100 }
 101
 102 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_StampPMsg (LPDIRECTMUSICGRAPH iface, DMUS_PMSG* pPMSG) {
 103         ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
 104         FIXME("(%p, %p): stub\n", This, pPMSG);
 105         return S_OK;
 106 }
 107
 108 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_InsertTool (LPDIRECTMUSICGRAPH iface, IDirectMusicTool* pTool, DWORD* pdwPChannels, DWORD cPChannels, LONG lIndex) {
 109   ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
 110
 111   struct list* pEntry = NULL;
 112   struct list* pPrevEntry = NULL;
 113   LPDMUS_PRIVATE_GRAPH_TOOL pIt = NULL;
 114   LPDMUS_PRIVATE_GRAPH_TOOL pNewTool = NULL;
 115
 116
 117   FIXME("(%p, %p, %p, %d, %i): use of pdwPChannels\n", This, pTool, pdwPChannels, cPChannels, lIndex);
 118
 119   if (NULL == pTool) {
 120     return E_POINTER;
 121   }
 122
 123   if (0 > lIndex) {
 124     lIndex = This->num_tools + lIndex;
 125   }
 126
 127   pPrevEntry = &This->Tools;
 128   LIST_FOR_EACH (pEntry, &This->Tools) {
 129     pIt = LIST_ENTRY(pEntry, DMUS_PRIVATE_GRAPH_TOOL, entry);
 130     if (pIt->dwIndex == lIndex) {
 131       return DMUS_E_ALREADY_EXISTS;
 132     }
 133     if (pIt->dwIndex > lIndex) {
 134       break ;
 135     }
 136     pPrevEntry = pEntry;
 137   }
 138
 139   ++This->num_tools;
 140   pNewTool = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(DMUS_PRIVATE_GRAPH_TOOL));
 141   pNewTool->pTool = pTool;
 142   pNewTool->dwIndex = lIndex;
 143   IDirectMusicTool8_AddRef(pTool);
 144   IDirectMusicTool8_Init(pTool, iface);
 145   list_add_tail (pPrevEntry->next, &pNewTool->entry);
 146
 147 #if 0
 148   DWORD dwNum = 0;
 149   IDirectMusicTool8_GetMediaTypes(pTool, &dwNum);
 150 #endif
 151
 152   return DS_OK;
 153 }
 154
 155 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_GetTool (LPDIRECTMUSICGRAPH iface, DWORD dwIndex, IDirectMusicTool** ppTool) {
 156   ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
 157   struct list* pEntry = NULL;
 158   LPDMUS_PRIVATE_GRAPH_TOOL pIt = NULL;
 159
 160   FIXME("(%p, %d, %p): stub\n", This, dwIndex, ppTool);
 161
 162   LIST_FOR_EACH (pEntry, &This->Tools) {
 163     pIt = LIST_ENTRY(pEntry, DMUS_PRIVATE_GRAPH_TOOL, entry);
 164     if (pIt->dwIndex == dwIndex) {
 165       *ppTool = pIt->pTool;
 166       if (NULL != *ppTool) {
 167         IDirectMusicTool8_AddRef((LPDIRECTMUSICTOOL8) *ppTool);
 168       }
 169       return S_OK;
 170     }
 171     if (pIt->dwIndex > dwIndex) {
 172       break ;
 173     }
 174   }
 175
 176   return DMUS_E_NOT_FOUND;
 177 }
 178
 179 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicGraph_RemoveTool (LPDIRECTMUSICGRAPH iface, IDirectMusicTool* pTool) {
 180   ICOM_THIS_MULTI(IDirectMusicGraphImpl, GraphVtbl, iface);
 181   FIXME("(%p, %p): stub\n", This, pTool);
 182   return S_OK;
 183 }
 184
 185 static const IDirectMusicGraphVtbl DirectMusicGraph_Graph_Vtbl = {
 186   IDirectMusicGraphImpl_IDirectMusicGraph_QueryInterface,
 187   IDirectMusicGraphImpl_IDirectMusicGraph_AddRef,
 188   IDirectMusicGraphImpl_IDirectMusicGraph_Release,
 189   IDirectMusicGraphImpl_IDirectMusicGraph_StampPMsg,
 190   IDirectMusicGraphImpl_IDirectMusicGraph_InsertTool,
 191   IDirectMusicGraphImpl_IDirectMusicGraph_GetTool,
 192   IDirectMusicGraphImpl_IDirectMusicGraph_RemoveTool
 193 };
 194
 195
 196 /* IDirectMusicGraphImpl IDirectMusicObject part: */
 197 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicObject_QueryInterface (LPDIRECTMUSICOBJECT iface, REFIID riid, LPVOID *ppobj) {
 198         ICOM_THIS_MULTI(IDirectMusicGraphImpl, ObjectVtbl, iface);
 199         return IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
 200 }
 201
 202 static ULONG WINAPI IDirectMusicGraphImpl_IDirectMusicObject_AddRef (LPDIRECTMUSICOBJECT iface) {
 203         ICOM_THIS_MULTI(IDirectMusicGraphImpl, ObjectVtbl, iface);
 204         return IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
 205 }
 206
 207 static ULONG WINAPI IDirectMusicGraphImpl_IDirectMusicObject_Release (LPDIRECTMUSICOBJECT iface) {
 208         ICOM_THIS_MULTI(IDirectMusicGraphImpl, ObjectVtbl, iface);
 209         return IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 210 }
 211
 212 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicObject_GetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
 213         ICOM_THIS_MULTI(IDirectMusicGraphImpl, ObjectVtbl, iface);
 214         TRACE("(%p, %p)\n", This, pDesc);
 215         /* I think we shouldn't return pointer here since then values can be changed; it'd be a mess */
 216         memcpy (pDesc, This->pDesc, This->pDesc->dwSize);
 217         return S_OK;
 218 }
 219
 220 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicObject_SetDescriptor (LPDIRECTMUSICOBJECT iface, LPDMUS_OBJECTDESC pDesc) {
 221         ICOM_THIS_MULTI(IDirectMusicGraphImpl, ObjectVtbl, iface);
 222         TRACE("(%p, %p): setting descriptor:\n%s\n", This, pDesc, debugstr_DMUS_OBJECTDESC (pDesc));
 223
 224         /* According to MSDN, we should copy only given values, not whole struct */
 225         if (pDesc->dwValidData & DMUS_OBJ_OBJECT)
 226                 This->pDesc->guidObject = pDesc->guidObject;
 227         if (pDesc->dwValidData & DMUS_OBJ_CLASS)
 228                 This->pDesc->guidClass = pDesc->guidClass;
 229         if (pDesc->dwValidData & DMUS_OBJ_NAME)
 230                 lstrcpynW (This->pDesc->wszName, pDesc->wszName, DMUS_MAX_NAME);
 231         if (pDesc->dwValidData & DMUS_OBJ_CATEGORY)
 232                 lstrcpynW (This->pDesc->wszCategory, pDesc->wszCategory, DMUS_MAX_CATEGORY);
 233         if (pDesc->dwValidData & DMUS_OBJ_FILENAME)
 234                 lstrcpynW (This->pDesc->wszFileName, pDesc->wszFileName, DMUS_MAX_FILENAME);
 235         if (pDesc->dwValidData & DMUS_OBJ_VERSION)
 236                 This->pDesc->vVersion = pDesc->vVersion;
 237         if (pDesc->dwValidData & DMUS_OBJ_DATE)
 238                 This->pDesc->ftDate = pDesc->ftDate;
 239         if (pDesc->dwValidData & DMUS_OBJ_MEMORY) {
 240                 This->pDesc->llMemLength = pDesc->llMemLength;
 241                 memcpy (This->pDesc->pbMemData, pDesc->pbMemData, pDesc->llMemLength);
 242         }
 243         if (pDesc->dwValidData & DMUS_OBJ_STREAM) {
 244                 /* according to MSDN, we copy the stream */
 245                 IStream_Clone (pDesc->pStream, &This->pDesc->pStream);
 246         }
 247
 248         /* add new flags */
 249         This->pDesc->dwValidData |= pDesc->dwValidData;
 250
 251         return S_OK;
 252 }
 253
 254 static HRESULT WINAPI IDirectMusicGraphImpl_IDirectMusicObject_ParseDescriptor (LPDIRECTMUSICOBJECT iface, LPSTREAM pStream, LPDMUS_OBJECTDESC pDesc) {
 255         ICOM_THIS_MULTI(IDirectMusicGraphImpl, ObjectVtbl, iface);
 256         DMUS_PRIVATE_CHUNK Chunk;
 257         DWORD StreamSize, StreamCount, ListSize[1], ListCount[1];
 258         LARGE_INTEGER liMove; /* used when skipping chunks */
 259
 260         TRACE("(%p, %p, %p)\n", This, pStream, pDesc);
 261
 262         /* FIXME: should this be determined from stream? */
 263         pDesc->dwValidData |= DMUS_OBJ_CLASS;
 264         pDesc->guidClass = CLSID_DirectMusicGraph;
 265
 266         IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 267         TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 268         switch (Chunk.fccID) {
 269                 case FOURCC_RIFF: {
 270                         IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);
 271                         TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(Chunk.fccID));
 272                         StreamSize = Chunk.dwSize - sizeof(FOURCC);
 273                         StreamCount = 0;
 274                         if (Chunk.fccID == DMUS_FOURCC_TOOLGRAPH_FORM) {
 275                                 TRACE_(dmfile)(": graph form\n");
 276                                 do {
 277                                         IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 278                                         StreamCount += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 279                                         TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 280                                         switch (Chunk.fccID) {
 281                                                 case DMUS_FOURCC_GUID_CHUNK: {
 282                                                         TRACE_(dmfile)(": GUID chunk\n");
 283                                                         pDesc->dwValidData |= DMUS_OBJ_OBJECT;
 284                                                         IStream_Read (pStream, &pDesc->guidObject, Chunk.dwSize, NULL);
 285                                                         break;
 286                                                 }
 287                                                 case DMUS_FOURCC_VERSION_CHUNK: {
 288                                                         TRACE_(dmfile)(": version chunk\n");
 289                                                         pDesc->dwValidData |= DMUS_OBJ_VERSION;
 290                                                         IStream_Read (pStream, &pDesc->vVersion, Chunk.dwSize, NULL);
 291                                                         break;
 292                                                 }
 293                                                 case DMUS_FOURCC_CATEGORY_CHUNK: {
 294                                                         TRACE_(dmfile)(": category chunk\n");
 295                                                         pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
 296                                                         IStream_Read (pStream, pDesc->wszCategory, Chunk.dwSize, NULL);
 297                                                         break;
 298                                                 }
 299                                                 case FOURCC_LIST: {
 300                                                         IStream_Read (pStream, &Chunk.fccID, sizeof(FOURCC), NULL);
 301                                                         TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(Chunk.fccID));
 302                                                         ListSize[0] = Chunk.dwSize - sizeof(FOURCC);
 303                                                         ListCount[0] = 0;
 304                                                         switch (Chunk.fccID) {
 305                                                                 /* evil M$ UNFO list, which can (!?) contain INFO elements */
 306                                                                 case DMUS_FOURCC_UNFO_LIST: {
 307                                                                         TRACE_(dmfile)(": UNFO list\n");
 308                                                                         do {
 309                                                                                 IStream_Read (pStream, &Chunk, sizeof(FOURCC)+sizeof(DWORD), NULL);
 310                                                                                 ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + Chunk.dwSize;
 311                                                                                 TRACE_(dmfile)(": %s chunk (size = 0x%04x)", debugstr_fourcc (Chunk.fccID), Chunk.dwSize);
 312                                                                                 switch (Chunk.fccID) {
 313                                                                                         /* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
 314                                              (though strings seem to be valid unicode) */
 315                                                                                         case mmioFOURCC('I','N','A','M'):
 316                                                                                         case DMUS_FOURCC_UNAM_CHUNK: {
 317                                                                                                 TRACE_(dmfile)(": name chunk\n");
 318                                                                                                 pDesc->dwValidData |= DMUS_OBJ_NAME;
 319                                                                                                 IStream_Read (pStream, pDesc->wszName, Chunk.dwSize, NULL);
 320                                                                                                 break;
 321                                                                                         }
 322                                                                                         case mmioFOURCC('I','A','R','T'):
 323                                                                                         case DMUS_FOURCC_UART_CHUNK: {
 324                                                                                                 TRACE_(dmfile)(": artist chunk (ignored)\n");
 325                                                                                                 liMove.QuadPart = Chunk.dwSize;
 326                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 327                                                                                                 break;
 328                                                                                         }
 329                                                                                         case mmioFOURCC('I','C','O','P'):
 330                                                                                         case DMUS_FOURCC_UCOP_CHUNK: {
 331                                                                                                 TRACE_(dmfile)(": copyright chunk (ignored)\n");
 332                                                                                                 liMove.QuadPart = Chunk.dwSize;
 333                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 334                                                                                                 break;
 335                                                                                         }
 336                                                                                         case mmioFOURCC('I','S','B','J'):
 337                                                                                         case DMUS_FOURCC_USBJ_CHUNK: {
 338                                                                                                 TRACE_(dmfile)(": subject chunk (ignored)\n");
 339                                                                                                 liMove.QuadPart = Chunk.dwSize;
 340                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 341                                                                                                 break;
 342                                                                                         }
 343                                                                                         case mmioFOURCC('I','C','M','T'):
 344                                                                                         case DMUS_FOURCC_UCMT_CHUNK: {
 345                                                                                                 TRACE_(dmfile)(": comment chunk (ignored)\n");
 346                                                                                                 liMove.QuadPart = Chunk.dwSize;
 347                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 348                                                                                                 break;
 349                                                                                         }
 350                                                                                         default: {
 351                                                                                                 TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 352                                                                                                 liMove.QuadPart = Chunk.dwSize;
 353                                                                                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 354                                                                                                 break;
 355                                                                                         }
 356                                                                                 }
 357                                                                                 TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 358                                                                         } while (ListCount[0] < ListSize[0]);
 359                                                                         break;
 360                                                                 }
 361                                                                 default: {
 362                                                                         TRACE_(dmfile)(": unknown (skipping)\n");
 363                                                                         liMove.QuadPart = Chunk.dwSize - sizeof(FOURCC);
 364                                                                         IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 365                                                                         break;
 366                                                                 }
 367                                                         }
 368                                                         break;
 369                                                 }
 370                                                 default: {
 371                                                         TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 372                                                         liMove.QuadPart = Chunk.dwSize;
 373                                                         IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL);
 374                                                         break;
 375                                                 }
 376                                         }
 377                                         TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
 378                                 } while (StreamCount < StreamSize);
 379                         } else {
 380                                 TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 381                                 liMove.QuadPart = StreamSize;
 382                                 IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 383                                 return E_FAIL;
 384                         }
 385
 386                         TRACE_(dmfile)(": reading finished\n");
 387                         break;
 388                 }
 389                 default: {
 390                         TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 391                         liMove.QuadPart = Chunk.dwSize;
 392                         IStream_Seek (pStream, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 393                         return DMUS_E_INVALIDFILE;
 394                 }
 395         }
 396
 397         TRACE(": returning descriptor:\n%s\n", debugstr_DMUS_OBJECTDESC (pDesc));
 398
 399         return S_OK;
 400 }
 401
 402 static const IDirectMusicObjectVtbl DirectMusicGraph_Object_Vtbl = {
 403         IDirectMusicGraphImpl_IDirectMusicObject_QueryInterface,
 404         IDirectMusicGraphImpl_IDirectMusicObject_AddRef,
 405         IDirectMusicGraphImpl_IDirectMusicObject_Release,
 406         IDirectMusicGraphImpl_IDirectMusicObject_GetDescriptor,
 407         IDirectMusicGraphImpl_IDirectMusicObject_SetDescriptor,
 408         IDirectMusicGraphImpl_IDirectMusicObject_ParseDescriptor
 409 };
 410
 411 /* IDirectMusicGraphImpl IPersistStream part: */
 412 static HRESULT WINAPI IDirectMusicGraphImpl_IPersistStream_QueryInterface (LPPERSISTSTREAM iface, REFIID riid, LPVOID *ppobj) {
 413         ICOM_THIS_MULTI(IDirectMusicGraphImpl, PersistStreamVtbl, iface);
 414         return IDirectMusicGraphImpl_IUnknown_QueryInterface ((LPUNKNOWN)&This->UnknownVtbl, riid, ppobj);
 415 }
 416
 417 static ULONG WINAPI IDirectMusicGraphImpl_IPersistStream_AddRef (LPPERSISTSTREAM iface) {
 418         ICOM_THIS_MULTI(IDirectMusicGraphImpl, PersistStreamVtbl, iface);
 419         return IDirectMusicGraphImpl_IUnknown_AddRef ((LPUNKNOWN)&This->UnknownVtbl);
 420 }
 421
 422 static ULONG WINAPI IDirectMusicGraphImpl_IPersistStream_Release (LPPERSISTSTREAM iface) {
 423         ICOM_THIS_MULTI(IDirectMusicGraphImpl, PersistStreamVtbl, iface);
 424         return IDirectMusicGraphImpl_IUnknown_Release ((LPUNKNOWN)&This->UnknownVtbl);
 425 }
 426
 427 static HRESULT WINAPI IDirectMusicGraphImpl_IPersistStream_GetClassID (LPPERSISTSTREAM iface, CLSID* pClassID) {
 428         return E_NOTIMPL;
 429 }
 430
 431 static HRESULT WINAPI IDirectMusicGraphImpl_IPersistStream_IsDirty (LPPERSISTSTREAM iface) {
 432         return E_NOTIMPL;
 433 }
 434
 435 static HRESULT WINAPI IDirectMusicGraphImpl_IPersistStream_Load (LPPERSISTSTREAM iface, IStream* pStm) {
 436         ICOM_THIS_MULTI(IDirectMusicGraphImpl, PersistStreamVtbl, iface);
 437         FOURCC chunkID;
 438         DWORD chunkSize, StreamSize, StreamCount, ListSize[3], ListCount[3];
 439         LARGE_INTEGER liMove; /* used when skipping chunks */
 440
 441         FIXME("(%p, %p): Loading not implemented yet\n", This, pStm);
 442         IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 443         IStream_Read (pStm, &chunkSize, sizeof(DWORD), NULL);
 444         TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
 445         switch (chunkID) {
 446                 case FOURCC_RIFF: {
 447                         IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 448                         TRACE_(dmfile)(": RIFF chunk of type %s", debugstr_fourcc(chunkID));
 449                         StreamSize = chunkSize - sizeof(FOURCC);
 450                         StreamCount = 0;
 451                         switch (chunkID) {
 452                                 case DMUS_FOURCC_TOOLGRAPH_FORM: {
 453                                         TRACE_(dmfile)(": graph form\n");
 454                                         do {
 455                                                 IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 456                                                 IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
 457                                                 StreamCount += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
 458                                                 TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
 459                                                 switch (chunkID) {
 460                                                         case DMUS_FOURCC_GUID_CHUNK: {
 461                                                                 TRACE_(dmfile)(": GUID chunk\n");
 462                                                                 This->pDesc->dwValidData |= DMUS_OBJ_OBJECT;
 463                                                                 IStream_Read (pStm, &This->pDesc->guidObject, chunkSize, NULL);
 464                                                                 break;
 465                                                         }
 466                                                         case DMUS_FOURCC_VERSION_CHUNK: {
 467                                                                 TRACE_(dmfile)(": version chunk\n");
 468                                                                 This->pDesc->dwValidData |= DMUS_OBJ_VERSION;
 469                                                                 IStream_Read (pStm, &This->pDesc->vVersion, chunkSize, NULL);
 470                                                                 break;
 471                                                         }
 472                                                         case DMUS_FOURCC_CATEGORY_CHUNK: {
 473                                                                 TRACE_(dmfile)(": category chunk\n");
 474                                                                 This->pDesc->dwValidData |= DMUS_OBJ_CATEGORY;
 475                                                                 IStream_Read (pStm, This->pDesc->wszCategory, chunkSize, NULL);
 476                                                                 break;
 477                                                         }
 478                                                         case FOURCC_LIST: {
 479                                                                 IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 480                                                                 TRACE_(dmfile)(": LIST chunk of type %s", debugstr_fourcc(chunkID));
 481                                                                 ListSize[0] = chunkSize - sizeof(FOURCC);
 482                                                                 ListCount[0] = 0;
 483                                                                 switch (chunkID) {
 484                                                                         case DMUS_FOURCC_UNFO_LIST: {
 485                                                                                 TRACE_(dmfile)(": UNFO list\n");
 486                                                                                 do {
 487                                                                                         IStream_Read (pStm, &chunkID, sizeof(FOURCC), NULL);
 488                                                                                         IStream_Read (pStm, &chunkSize, sizeof(FOURCC), NULL);
 489                                                                                         ListCount[0] += sizeof(FOURCC) + sizeof(DWORD) + chunkSize;
 490                                                                                         TRACE_(dmfile)(": %s chunk (size = %d)", debugstr_fourcc (chunkID), chunkSize);
 491                                                                                         switch (chunkID) {
 492                                                                                                 /* don't ask me why, but M$ puts INFO elements in UNFO list sometimes
 493                                               (though strings seem to be valid unicode) */
 494                                                                                                 case mmioFOURCC('I','N','A','M'):
 495                                                                                                 case DMUS_FOURCC_UNAM_CHUNK: {
 496                                                                                                         TRACE_(dmfile)(": name chunk\n");
 497                                                                                                         This->pDesc->dwValidData |= DMUS_OBJ_NAME;
 498                                                                                                         IStream_Read (pStm, This->pDesc->wszName, chunkSize, NULL);
 499                                                                                                         break;
 500                                                                                                 }
 501                                                                                                 case mmioFOURCC('I','A','R','T'):
 502                                                                                                 case DMUS_FOURCC_UART_CHUNK: {
 503                                                                                                         TRACE_(dmfile)(": artist chunk (ignored)\n");
 504                                                                                                         liMove.QuadPart = chunkSize;
 505                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 506                                                                                                         break;
 507                                                                                                 }
 508                                                                                                 case mmioFOURCC('I','C','O','P'):
 509                                                                                                 case DMUS_FOURCC_UCOP_CHUNK: {
 510                                                                                                         TRACE_(dmfile)(": copyright chunk (ignored)\n");
 511                                                                                                         liMove.QuadPart = chunkSize;
 512                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 513                                                                                                         break;
 514                                                                                                 }
 515                                                                                                 case mmioFOURCC('I','S','B','J'):
 516                                                                                                 case DMUS_FOURCC_USBJ_CHUNK: {
 517                                                                                                         TRACE_(dmfile)(": subject chunk (ignored)\n");
 518                                                                                                         liMove.QuadPart = chunkSize;
 519                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 520                                                                                                         break;
 521                                                                                                 }
 522                                                                                                 case mmioFOURCC('I','C','M','T'):
 523                                                                                                 case DMUS_FOURCC_UCMT_CHUNK: {
 524                                                                                                         TRACE_(dmfile)(": comment chunk (ignored)\n");
 525                                                                                                         liMove.QuadPart = chunkSize;
 526                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 527                                                                                                         break;
 528                                                                                                 }
 529                                                                                                 default: {
 530                                                                                                         TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 531                                                                                                         liMove.QuadPart = chunkSize;
 532                                                                                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 533                                                                                                         break;
 534                                                                                                 }
 535                                                                                         }
 536                                                                                         TRACE_(dmfile)(": ListCount[0] = %d < ListSize[0] = %d\n", ListCount[0], ListSize[0]);
 537                                                                                 } while (ListCount[0] < ListSize[0]);
 538                                                                                 break;
 539                                                                         }
 540                                                                         default: {
 541                                                                                 TRACE_(dmfile)(": unknown (skipping)\n");
 542                                                                                 liMove.QuadPart = chunkSize - sizeof(FOURCC);
 543                                                                                 IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 544                                                                                 break;
 545                                                                         }
 546                                                                 }
 547                                                                 break;
 548                                                         }
 549                                                         default: {
 550                                                                 TRACE_(dmfile)(": unknown chunk (irrelevant & skipping)\n");
 551                                                                 liMove.QuadPart = chunkSize;
 552                                                                 IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL);
 553                                                                 break;
 554                                                         }
 555                                                 }
 556                                                 TRACE_(dmfile)(": StreamCount[0] = %d < StreamSize[0] = %d\n", StreamCount, StreamSize);
 557                                         } while (StreamCount < StreamSize);
 558                                         break;
 559                                 }
 560                                 default: {
 561                                         TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 562                                         liMove.QuadPart = StreamSize;
 563                                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 564                                         return E_FAIL;
 565                                 }
 566                         }
 567                         TRACE_(dmfile)(": reading finished\n");
 568                         break;
 569                 }
 570                 default: {
 571                         TRACE_(dmfile)(": unexpected chunk; loading failed)\n");
 572                         liMove.QuadPart = chunkSize;
 573                         IStream_Seek (pStm, liMove, STREAM_SEEK_CUR, NULL); /* skip the rest of the chunk */
 574                         return E_FAIL;
 575                 }
 576         }
 577
 578         return S_OK;
 579 }
 580
 581 static HRESULT WINAPI IDirectMusicGraphImpl_IPersistStream_Save (LPPERSISTSTREAM iface, IStream* pStm, BOOL fClearDirty) {
 582         return E_NOTIMPL;
 583 }
 584
 585 static HRESULT WINAPI IDirectMusicGraphImpl_IPersistStream_GetSizeMax (LPPERSISTSTREAM iface, ULARGE_INTEGER* pcbSize) {
 586         return E_NOTIMPL;
 587 }
 588
 589 static const IPersistStreamVtbl DirectMusicGraph_PersistStream_Vtbl = {
 590         IDirectMusicGraphImpl_IPersistStream_QueryInterface,
 591         IDirectMusicGraphImpl_IPersistStream_AddRef,
 592         IDirectMusicGraphImpl_IPersistStream_Release,
 593         IDirectMusicGraphImpl_IPersistStream_GetClassID,
 594         IDirectMusicGraphImpl_IPersistStream_IsDirty,
 595         IDirectMusicGraphImpl_IPersistStream_Load,
 596         IDirectMusicGraphImpl_IPersistStream_Save,
 597         IDirectMusicGraphImpl_IPersistStream_GetSizeMax
 598 };
 599
 600 /* for ClassFactory */
 601 HRESULT WINAPI DMUSIC_CreateDirectMusicGraphImpl (LPCGUID lpcGUID, LPVOID* ppobj, LPUNKNOWN pUnkOuter) {
 602   IDirectMusicGraphImpl* obj;
 603
 604   obj = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(IDirectMusicGraphImpl));
 605   if (NULL == obj) {
 606     *ppobj = NULL;
 607     return E_OUTOFMEMORY;
 608   }
 609   obj->UnknownVtbl = &DirectMusicGraph_Unknown_Vtbl;
 610   obj->GraphVtbl = &DirectMusicGraph_Graph_Vtbl;
 611   obj->ObjectVtbl = &DirectMusicGraph_Object_Vtbl;
 612   obj->PersistStreamVtbl = &DirectMusicGraph_PersistStream_Vtbl;
 613   obj->pDesc = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, sizeof(DMUS_OBJECTDESC));
 614   DM_STRUCT_INIT(obj->pDesc);
 615   obj->pDesc->dwValidData |= DMUS_OBJ_CLASS;
 616   obj->pDesc->guidClass = CLSID_DirectMusicGraph;
 617   obj->ref = 0; /* will be inited by QueryInterface */
 618   list_init (&obj->Tools);
 619
 620   return IDirectMusicGraphImpl_IUnknown_QueryInterface ((LPUNKNOWN)&obj->UnknownVtbl, lpcGUID, ppobj);
 621 }