git.oblomov.eu Git - wine/blob - dlls/dmloader/loaderstream.c

   1 /* IDirectMusicLoaderFileStream
   2  * IDirectMusicLoaderResourceStream
   3  * IDirectMusicLoaderGenericStream
   4  *
   5  * Copyright (C) 2003-2004 Rok Mandeljc
   6  *
   7  * This program is free software; you can redistribute it and/or modify
   8  * it under the terms of the GNU General Public License as published by
   9  * the Free Software Foundation; either version 2 of the License, or
  10  * (at your option) any later version.
  11  *
  12  * This program is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15  * GNU Library General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU General Public License
  18  * along with this program; if not, write to the Free Software
  19  * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
  20  */
  21
  22
  23 /* SIDE NOTES:
  24  * After extensive testing and structure dumping I came to a conclusion that
  25  * DirectMusic as in present state implements three types of streams:
  26  *  1. IDirectMusicLoaderFileStream: stream that was most obvious, since
  27  *     it's used for loading from files; it is sort of wrapper around
  28  *     CreateFile, ReadFile, WriteFile and SetFilePointer and it supports
  29  *     both read and write
  30  *  2. IDirectMusicLoaderResourceStream: a stream that had to exist, since
  31  *     according to MSDN, IDirectMusicLoader supports loading from resource
  32  *     as well; in this case, data is represented as a big chunk of bytes,
  33  *     from which we "read" (copy) data and keep the trace of our position;
  34  *      it supports read only
  35  *  3. IDirectMusicLoaderGenericStream: this one was the most problematic,
  36  *     since I thought it was URL-related; besides, there's no obvious need
  37  *     for it, since input streams can simply be cloned, lest loading from
  38  *     stream is requested; but if one really thinks about it, input stream
  39  *     could be none of 1. or 2.; in this case, a wrapper that offers
  40  *     IDirectMusicGetLoader interface would be nice, and this is what this
  41  *     stream is; as such, all functions are supported, as long as underlying
  42  *     ("low-level") stream supports them
  43  *
  44  * - Rok Mandeljc; 24. april, 2004
  45 */
  46
  47 #define NONAMELESSUNION
  48 #define NONAMELESSSTRUCT
  49
  50 #include "dmloader_private.h"
  51
  52 WINE_DEFAULT_DEBUG_CHANNEL(dmloader);
  53 WINE_DECLARE_DEBUG_CHANNEL(dmfileraw);
  54
  55 /*****************************************************************************
  56  * IDirectMusicLoaderFileStream implementation
  57  */
  58 /* Custom : */
  59 HRESULT WINAPI IDirectMusicLoaderFileStream_Attach (LPSTREAM iface, LPCWSTR wzFile, LPDIRECTMUSICLOADER pLoader) {
  60         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
  61     TRACE("(%p, %s, %p)\n", This, debugstr_w(wzFile), pLoader);
  62     IDirectMusicLoaderFileStream_Detach (iface);
  63     This->hFile = CreateFileW (wzFile, (GENERIC_READ | GENERIC_WRITE), (FILE_SHARE_READ | FILE_SHARE_WRITE), NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, NULL);
  64     if (This->hFile == INVALID_HANDLE_VALUE) {
  65         WARN(": failed\n");
  66         return DMUS_E_LOADER_FAILEDOPEN;
  67     }
  68     /* create IDirectMusicGetLoader */
  69     This->pLoader = (LPDIRECTMUSICLOADER8)pLoader;
  70     strncpyW (This->wzFileName, wzFile, MAX_PATH);
  71     TRACE(": succeeded\n");
  72     return S_OK;
  73 }
  74
  75 void WINAPI IDirectMusicLoaderFileStream_Detach (LPSTREAM iface) {
  76         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
  77         TRACE("(%p)\n", This);
  78         if (This->hFile != INVALID_HANDLE_VALUE) {
  79         CloseHandle(This->hFile);
  80     }
  81     This->wzFileName[0] = (L'\0');
  82 }
  83
  84
  85 /* IUnknown/IStream part: */
  86 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_QueryInterface (LPSTREAM iface, REFIID riid, void** ppobj) {
  87         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
  88
  89         TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
  90         if (IsEqualIID (riid, &IID_IUnknown) ||
  91                 IsEqualIID (riid, &IID_IStream)) {
  92                 *ppobj = (LPVOID)&This->StreamVtbl;
  93                 IDirectMusicLoaderFileStream_IStream_AddRef ((LPSTREAM)&This->StreamVtbl);
  94                 return S_OK;
  95         } else if (IsEqualIID (riid, &IID_IDirectMusicGetLoader)) {
  96                 *ppobj = (LPVOID)&This->GetLoaderVtbl;
  97                 IDirectMusicLoaderFileStream_IDirectMusicGetLoader_AddRef ((LPDIRECTMUSICGETLOADER)&This->GetLoaderVtbl);
  98                 return S_OK;
  99         }
 100
 101         WARN(": not found\n");
 102         return E_NOINTERFACE;
 103 }
 104
 105 ULONG WINAPI IDirectMusicLoaderFileStream_IStream_AddRef (LPSTREAM iface) {
 106         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 107         TRACE("(%p): AddRef from %ld\n", This, This->dwRef);
 108         return InterlockedIncrement (&This->dwRef);
 109 }
 110
 111 ULONG WINAPI IDirectMusicLoaderFileStream_IStream_Release (LPSTREAM iface) {
 112         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 113
 114         DWORD dwRef = InterlockedDecrement (&This->dwRef);
 115         TRACE("(%p): ReleaseRef to %ld\n", This, dwRef);
 116         if (dwRef == 0) {
 117                 DMUSIC_DestroyDirectMusicLoaderFileStream (iface);
 118         }
 119
 120         return dwRef;
 121 }
 122
 123 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Read (LPSTREAM iface, void* pv, ULONG cb, ULONG* pcbRead) {
 124         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 125     ULONG cbRead;
 126
 127         TRACE_(dmfileraw)("(%p, %p, 0x%08lX, %p)\n", This, pv, cb, pcbRead);
 128     if (This->hFile == INVALID_HANDLE_VALUE) return E_FAIL;
 129     if (pcbRead == NULL) pcbRead = &cbRead;
 130     if (!ReadFile (This->hFile, pv, cb, pcbRead, NULL) || *pcbRead != cb) return E_FAIL;
 131
 132         TRACE_(dmfileraw)(": data (size = 0x%08lX): '%s'\n", *pcbRead, debugstr_an(pv, *pcbRead));
 133     return S_OK;
 134 }
 135
 136 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Seek (LPSTREAM iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition) {
 137         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 138     LARGE_INTEGER liNewPos;
 139
 140         TRACE_(dmfileraw)("(%p, 0x%08llX, %s, %p)\n", This, dlibMove.QuadPart, resolve_STREAM_SEEK(dwOrigin), plibNewPosition);
 141
 142         if (This->hFile == INVALID_HANDLE_VALUE) return E_FAIL;
 143
 144     liNewPos.u.HighPart = dlibMove.u.HighPart;
 145     liNewPos.u.LowPart = SetFilePointer (This->hFile, dlibMove.u.LowPart, &liNewPos.u.HighPart, dwOrigin);
 146
 147     if (liNewPos.u.LowPart == INVALID_SET_FILE_POINTER && GetLastError() != NO_ERROR) return E_FAIL;
 148     if (plibNewPosition) plibNewPosition->QuadPart = liNewPos.QuadPart;
 149
 150     return S_OK;
 151 }
 152
 153 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Clone (LPSTREAM iface, IStream** ppstm) {
 154         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 155         LPSTREAM pOther = NULL;
 156         HRESULT result;
 157
 158         TRACE("(%p, %p)\n", iface, ppstm);
 159         result = DMUSIC_CreateDirectMusicLoaderFileStream ((LPVOID*)&pOther);
 160         if (FAILED(result)) return result;
 161         if (This->hFile != INVALID_HANDLE_VALUE) {
 162                 ULARGE_INTEGER ullCurrentPosition;
 163                 result = IDirectMusicLoaderFileStream_Attach (pOther, This->wzFileName, (LPDIRECTMUSICLOADER)This->pLoader);
 164                 if (SUCCEEDED(result)) {
 165                         LARGE_INTEGER liZero;
 166                         liZero.QuadPart = 0;
 167                         result = IDirectMusicLoaderFileStream_IStream_Seek (iface, liZero, STREAM_SEEK_CUR, &ullCurrentPosition); /* get current position in current stream */
 168         }
 169                 if (SUCCEEDED(result)) {
 170                         LARGE_INTEGER liNewPosition;
 171                         liNewPosition.QuadPart = ullCurrentPosition.QuadPart;
 172                         result = IDirectMusicLoaderFileStream_IStream_Seek ((LPSTREAM)pOther, liNewPosition, STREAM_SEEK_SET, &ullCurrentPosition);
 173                 }
 174                 if (FAILED(result)) {
 175                         TRACE(": failed\n");
 176                         IDirectMusicLoaderFileStream_IStream_Release ((LPSTREAM)pOther);
 177                         return result;
 178                 }
 179         }
 180         TRACE(": succeeded\n");
 181         *ppstm = (IStream*)pOther;
 182         return S_OK;
 183 }
 184
 185 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Write (LPSTREAM iface, const void* pv, ULONG cb, ULONG* pcbWritten) {
 186         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 187     ULONG cbWrite;
 188
 189         TRACE_(dmfileraw)("(%p, %p, 0x%08lX, %p)\n", This, pv, cb, pcbWritten);
 190     if (This->hFile == INVALID_HANDLE_VALUE) return E_FAIL;
 191     if (pcbWritten == NULL) pcbWritten = &cbWrite;
 192     if (!WriteFile (This->hFile, pv, cb, pcbWritten, NULL) || *pcbWritten != cb) return E_FAIL;
 193
 194         TRACE_(dmfileraw)(": data (size = 0x%08lX): '%s'\n", *pcbWritten, debugstr_an(pv, *pcbWritten));
 195     return S_OK;
 196 }
 197
 198 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_SetSize (LPSTREAM iface, ULARGE_INTEGER libNewSize) {
 199         ERR(": should not be needed\n");
 200     return E_NOTIMPL;
 201 }
 202
 203 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_CopyTo (LPSTREAM iface, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten) {
 204         ERR(": should not be needed\n");
 205     return E_NOTIMPL;
 206 }
 207
 208 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Commit (LPSTREAM iface, DWORD grfCommitFlags) {
 209         ERR(": should not be needed\n");
 210     return E_NOTIMPL;
 211 }
 212
 213 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Revert (LPSTREAM iface) {
 214         ERR(": should not be needed\n");
 215     return E_NOTIMPL;
 216 }
 217
 218 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_LockRegion (LPSTREAM iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
 219         ERR(": should not be needed\n");
 220     return E_NOTIMPL;
 221 }
 222
 223 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_UnlockRegion (LPSTREAM iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
 224         ERR(": should not be needed\n");
 225     return E_NOTIMPL;
 226 }
 227
 228 HRESULT WINAPI IDirectMusicLoaderFileStream_IStream_Stat (LPSTREAM iface, STATSTG* pstatstg, DWORD grfStatFlag) {
 229         ERR(": should not be needed\n");
 230     return E_NOTIMPL;
 231 }
 232
 233 ICOM_VTABLE(IStream) DirectMusicLoaderFileStream_Stream_Vtbl = {
 234     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 235         IDirectMusicLoaderFileStream_IStream_QueryInterface,
 236         IDirectMusicLoaderFileStream_IStream_AddRef,
 237         IDirectMusicLoaderFileStream_IStream_Release,
 238         IDirectMusicLoaderFileStream_IStream_Read,
 239         IDirectMusicLoaderFileStream_IStream_Write,
 240         IDirectMusicLoaderFileStream_IStream_Seek,
 241         IDirectMusicLoaderFileStream_IStream_SetSize,
 242         IDirectMusicLoaderFileStream_IStream_CopyTo,
 243         IDirectMusicLoaderFileStream_IStream_Commit,
 244         IDirectMusicLoaderFileStream_IStream_Revert,
 245         IDirectMusicLoaderFileStream_IStream_LockRegion,
 246         IDirectMusicLoaderFileStream_IStream_UnlockRegion,
 247         IDirectMusicLoaderFileStream_IStream_Stat,
 248         IDirectMusicLoaderFileStream_IStream_Clone
 249 };
 250
 251 /* IDirectMusicGetLoader part: */
 252 HRESULT WINAPI IDirectMusicLoaderFileStream_IDirectMusicGetLoader_QueryInterface (LPDIRECTMUSICGETLOADER iface, REFIID riid, void** ppobj) {
 253         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, GetLoaderVtbl, iface);
 254         return IDirectMusicLoaderFileStream_IStream_QueryInterface ((LPSTREAM)&This->StreamVtbl, riid, ppobj);
 255 }
 256
 257 ULONG WINAPI IDirectMusicLoaderFileStream_IDirectMusicGetLoader_AddRef (LPDIRECTMUSICGETLOADER iface) {
 258         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, GetLoaderVtbl, iface);
 259         return IDirectMusicLoaderFileStream_IStream_AddRef ((LPSTREAM)&This->StreamVtbl);
 260 }
 261
 262 ULONG WINAPI IDirectMusicLoaderFileStream_IDirectMusicGetLoader_Release (LPDIRECTMUSICGETLOADER iface) {
 263         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, GetLoaderVtbl, iface);
 264         return IDirectMusicLoaderFileStream_IStream_Release ((LPSTREAM)&This->StreamVtbl);
 265 }
 266
 267 HRESULT WINAPI IDirectMusicLoaderFileStream_IDirectMusicGetLoader_GetLoader (LPDIRECTMUSICGETLOADER iface, IDirectMusicLoader **ppLoader) {
 268         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, GetLoaderVtbl, iface);
 269
 270         TRACE("(%p, %p)\n", This, ppLoader);
 271         *ppLoader = (LPDIRECTMUSICLOADER)This->pLoader;
 272         IDirectMusicLoader8_AddRef ((LPDIRECTMUSICLOADER8)*ppLoader);
 273
 274         return S_OK;
 275 }
 276
 277 ICOM_VTABLE(IDirectMusicGetLoader) DirectMusicLoaderFileStream_GetLoader_Vtbl = {
 278     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 279         IDirectMusicLoaderFileStream_IDirectMusicGetLoader_QueryInterface,
 280         IDirectMusicLoaderFileStream_IDirectMusicGetLoader_AddRef,
 281         IDirectMusicLoaderFileStream_IDirectMusicGetLoader_Release,
 282         IDirectMusicLoaderFileStream_IDirectMusicGetLoader_GetLoader
 283 };
 284
 285 HRESULT WINAPI DMUSIC_CreateDirectMusicLoaderFileStream (LPVOID* ppobj) {
 286         IDirectMusicLoaderFileStream *obj;
 287
 288         TRACE("(%p)\n", ppobj);
 289         obj = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(IDirectMusicLoaderFileStream));
 290         if (NULL == obj) {
 291                 *ppobj = (LPVOID) NULL;
 292                 return E_OUTOFMEMORY;
 293         }
 294         obj->StreamVtbl = &DirectMusicLoaderFileStream_Stream_Vtbl;
 295         obj->GetLoaderVtbl = &DirectMusicLoaderFileStream_GetLoader_Vtbl;
 296         obj->dwRef = 0; /* will be inited with QueryInterface */
 297
 298         return IDirectMusicLoaderFileStream_IStream_QueryInterface ((LPSTREAM)&obj->StreamVtbl, &IID_IStream, ppobj);
 299 }
 300
 301 HRESULT WINAPI DMUSIC_DestroyDirectMusicLoaderFileStream (LPSTREAM iface) {
 302         ICOM_THIS_MULTI(IDirectMusicLoaderFileStream, StreamVtbl, iface);
 303
 304         TRACE("(%p)\n", iface);
 305         if (This->hFile)
 306                 IDirectMusicLoaderFileStream_Detach (iface);
 307         HeapFree (GetProcessHeap(), 0, This);
 308
 309         return S_OK;
 310 }
 311
 312
 313 /*****************************************************************************
 314  * IDirectMusicLoaderResourceStream implementation
 315  */
 316 /* Custom : */
 317 HRESULT WINAPI IDirectMusicLoaderResourceStream_Attach (LPSTREAM iface, LPBYTE pbMemData, LONGLONG llMemLength, LONGLONG llPos, LPDIRECTMUSICLOADER pLoader) {
 318         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 319
 320         TRACE("(%p, %p, 0x%08llX, 0x%08llx, %p)\n", This, pbMemData, llMemLength, llPos, pLoader);
 321         if (!pbMemData || !llMemLength) {
 322                 WARN(": invalid pbMemData or llMemLength\n");
 323                 return E_FAIL;
 324         }
 325         IDirectMusicLoaderResourceStream_Detach (iface);
 326         This->pbMemData = pbMemData;
 327         This->llMemLength = llMemLength;
 328         This->llPos = llPos;
 329         This->pLoader = pLoader;
 330
 331     return S_OK;
 332 }
 333
 334 void WINAPI IDirectMusicLoaderResourceStream_Detach (LPSTREAM iface) {
 335         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 336         TRACE("(%p)\n", This);
 337
 338         This->pbMemData = NULL;
 339         This->llMemLength = 0;
 340 }
 341
 342
 343 /* IUnknown/IStream part: */
 344 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_QueryInterface (LPSTREAM iface, REFIID riid, void** ppobj) {
 345         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 346
 347         TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
 348         if (IsEqualIID (riid, &IID_IUnknown) ||
 349                 IsEqualIID (riid, &IID_IStream)) {
 350                 *ppobj = (LPVOID)&This->StreamVtbl;
 351                 IDirectMusicLoaderResourceStream_IStream_AddRef ((LPSTREAM)&This->StreamVtbl);
 352                 return S_OK;
 353         } else if (IsEqualIID (riid, &IID_IDirectMusicGetLoader)) {
 354                 *ppobj = (LPVOID)&This->GetLoaderVtbl;
 355                 IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_AddRef ((LPDIRECTMUSICGETLOADER)&This->GetLoaderVtbl);
 356                 return S_OK;
 357         }
 358
 359         WARN(": not found\n");
 360         return E_NOINTERFACE;
 361 }
 362
 363 ULONG WINAPI IDirectMusicLoaderResourceStream_IStream_AddRef (LPSTREAM iface) {
 364         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 365         TRACE("(%p): AddRef from %ld\n", This, This->dwRef);
 366         return InterlockedIncrement (&This->dwRef);
 367 }
 368
 369 ULONG WINAPI IDirectMusicLoaderResourceStream_IStream_Release (LPSTREAM iface) {
 370         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 371
 372         DWORD dwRef = InterlockedDecrement (&This->dwRef);
 373         TRACE("(%p): ReleaseRef to %ld\n", This, dwRef);
 374         if (dwRef == 0) {
 375                 DMUSIC_DestroyDirectMusicLoaderResourceStream (iface);
 376         }
 377
 378         return dwRef;
 379 }
 380
 381 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Read (LPSTREAM iface, void* pv, ULONG cb, ULONG* pcbRead) {
 382         LPBYTE pByte;
 383         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 384
 385         TRACE_(dmfileraw)("(%p, %p, 0x%08lX, %p)\n", This, pv, cb, pcbRead);
 386         if ((This->llPos + cb) > This->llMemLength) {
 387                 WARN_(dmfileraw)(": requested size out of range\n");
 388                 return E_FAIL;
 389         }
 390
 391         pByte = &This->pbMemData[This->llPos];
 392         memcpy (pv, pByte, cb);
 393         This->llPos += cb; /* move pointer */
 394         /* FIXME: error checking would be nice */
 395         *pcbRead = cb;
 396
 397         TRACE_(dmfileraw)(": data (size = 0x%08lX): '%s'\n", *pcbRead, debugstr_an(pv, *pcbRead));
 398     return S_OK;
 399 }
 400
 401 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Seek (LPSTREAM iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition) {
 402         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 403         TRACE_(dmfileraw)("(%p, 0x%08llX, %s, %p)\n", This, dlibMove.QuadPart, resolve_STREAM_SEEK(dwOrigin), plibNewPosition);
 404
 405         switch (dwOrigin) {
 406                 case STREAM_SEEK_CUR: {
 407                         if ((This->llPos + dlibMove.QuadPart) > This->llMemLength) {
 408                                 WARN_(dmfileraw)(": requested offset out of range\n");
 409                                 return E_FAIL;
 410                         }
 411                         break;
 412                 }
 413                 case STREAM_SEEK_SET: {
 414                         if (dlibMove.QuadPart > This->llMemLength) {
 415                                 WARN_(dmfileraw)(": requested offset out of range\n");
 416                                 return E_FAIL;
 417                         }
 418                         /* set to the beginning of the stream */
 419                         This->llPos = 0;
 420                         break;
 421                 }
 422                 case STREAM_SEEK_END: {
 423                         /* TODO: check if this is true... I do think offset should be negative in this case */
 424                         if (dlibMove.QuadPart > 0) {
 425                                 WARN_(dmfileraw)(": requested offset out of range\n");
 426                                 return E_FAIL;
 427                         }
 428                         /* set to the end of the stream */
 429                         This->llPos = This->llMemLength;
 430                         break;
 431                 }
 432                 default: {
 433                         ERR_(dmfileraw)(": invalid dwOrigin\n");
 434                         return E_FAIL;
 435                 }
 436         }
 437         /* now simply add */
 438         This->llPos += dlibMove.QuadPart;
 439
 440         if (plibNewPosition) plibNewPosition->QuadPart = This->llPos;
 441
 442     return S_OK;
 443 }
 444
 445 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Clone (LPSTREAM iface, IStream** ppstm) {
 446         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 447         LPSTREAM pOther = NULL;
 448         HRESULT result;
 449
 450         TRACE("(%p, %p)\n", iface, ppstm);
 451         result = DMUSIC_CreateDirectMusicLoaderResourceStream ((LPVOID*)&pOther);
 452         if (FAILED(result)) return result;
 453
 454         IDirectMusicLoaderResourceStream_Attach (pOther, This->pbMemData, This->llMemLength, This->llPos, This->pLoader);
 455
 456         TRACE(": succeeded\n");
 457         *ppstm = (IStream*)pOther;
 458         return S_OK;
 459 }
 460
 461 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Write (LPSTREAM iface, const void* pv, ULONG cb, ULONG* pcbWritten) {
 462         ERR(": should not be needed\n");
 463     return E_NOTIMPL;
 464 }
 465
 466 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_SetSize (LPSTREAM iface, ULARGE_INTEGER libNewSize) {
 467         ERR(": should not be needed\n");
 468     return E_NOTIMPL;
 469 }
 470
 471 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_CopyTo (LPSTREAM iface, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten) {
 472         ERR(": should not be needed\n");
 473     return E_NOTIMPL;
 474 }
 475
 476 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Commit (LPSTREAM iface, DWORD grfCommitFlags) {
 477         ERR(": should not be needed\n");
 478     return E_NOTIMPL;
 479 }
 480
 481 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Revert (LPSTREAM iface) {
 482         ERR(": should not be needed\n");
 483     return E_NOTIMPL;
 484 }
 485
 486 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_LockRegion (LPSTREAM iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
 487         ERR(": should not be needed\n");
 488     return E_NOTIMPL;
 489 }
 490
 491 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_UnlockRegion (LPSTREAM iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
 492         ERR(": should not be needed\n");
 493     return E_NOTIMPL;
 494 }
 495
 496 HRESULT WINAPI IDirectMusicLoaderResourceStream_IStream_Stat (LPSTREAM iface, STATSTG* pstatstg, DWORD grfStatFlag) {
 497         ERR(": should not be needed\n");
 498     return E_NOTIMPL;
 499 }
 500
 501 ICOM_VTABLE(IStream) DirectMusicLoaderResourceStream_Stream_Vtbl = {
 502     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 503         IDirectMusicLoaderResourceStream_IStream_QueryInterface,
 504         IDirectMusicLoaderResourceStream_IStream_AddRef,
 505         IDirectMusicLoaderResourceStream_IStream_Release,
 506         IDirectMusicLoaderResourceStream_IStream_Read,
 507         IDirectMusicLoaderResourceStream_IStream_Write,
 508         IDirectMusicLoaderResourceStream_IStream_Seek,
 509         IDirectMusicLoaderResourceStream_IStream_SetSize,
 510         IDirectMusicLoaderResourceStream_IStream_CopyTo,
 511         IDirectMusicLoaderResourceStream_IStream_Commit,
 512         IDirectMusicLoaderResourceStream_IStream_Revert,
 513         IDirectMusicLoaderResourceStream_IStream_LockRegion,
 514         IDirectMusicLoaderResourceStream_IStream_UnlockRegion,
 515         IDirectMusicLoaderResourceStream_IStream_Stat,
 516         IDirectMusicLoaderResourceStream_IStream_Clone
 517 };
 518
 519 /* IDirectMusicGetLoader part: */
 520 HRESULT WINAPI IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_QueryInterface (LPDIRECTMUSICGETLOADER iface, REFIID riid, void** ppobj) {
 521         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, GetLoaderVtbl, iface);
 522         return IDirectMusicLoaderResourceStream_IStream_QueryInterface ((LPSTREAM)&This->StreamVtbl, riid, ppobj);
 523 }
 524
 525 ULONG WINAPI IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_AddRef (LPDIRECTMUSICGETLOADER iface) {
 526         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, GetLoaderVtbl, iface);
 527         return IDirectMusicLoaderResourceStream_IStream_AddRef ((LPSTREAM)&This->StreamVtbl);
 528 }
 529
 530 ULONG WINAPI IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_Release (LPDIRECTMUSICGETLOADER iface) {
 531         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, GetLoaderVtbl, iface);
 532         return IDirectMusicLoaderResourceStream_IStream_Release ((LPSTREAM)&This->StreamVtbl);
 533 }
 534
 535 HRESULT WINAPI IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_GetLoader (LPDIRECTMUSICGETLOADER iface, IDirectMusicLoader **ppLoader) {
 536         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, GetLoaderVtbl, iface);
 537
 538         TRACE("(%p, %p)\n", This, ppLoader);
 539         *ppLoader = (LPDIRECTMUSICLOADER)This->pLoader;
 540         IDirectMusicLoader8_AddRef ((LPDIRECTMUSICLOADER8)*ppLoader);
 541
 542         return S_OK;
 543 }
 544
 545 ICOM_VTABLE(IDirectMusicGetLoader) DirectMusicLoaderResourceStream_GetLoader_Vtbl = {
 546     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 547         IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_QueryInterface,
 548         IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_AddRef,
 549         IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_Release,
 550         IDirectMusicLoaderResourceStream_IDirectMusicGetLoader_GetLoader
 551 };
 552
 553 HRESULT WINAPI DMUSIC_CreateDirectMusicLoaderResourceStream (LPVOID* ppobj) {
 554         IDirectMusicLoaderResourceStream *obj;
 555
 556         TRACE("(%p)\n", ppobj);
 557         obj = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(IDirectMusicLoaderResourceStream));
 558         if (NULL == obj) {
 559                 *ppobj = (LPVOID) NULL;
 560                 return E_OUTOFMEMORY;
 561         }
 562         obj->StreamVtbl = &DirectMusicLoaderResourceStream_Stream_Vtbl;
 563         obj->GetLoaderVtbl = &DirectMusicLoaderResourceStream_GetLoader_Vtbl;
 564         obj->dwRef = 0; /* will be inited with QueryInterface */
 565
 566         return IDirectMusicLoaderResourceStream_IStream_QueryInterface ((LPSTREAM)&obj->StreamVtbl, &IID_IStream, ppobj);
 567 }
 568
 569 HRESULT WINAPI DMUSIC_DestroyDirectMusicLoaderResourceStream (LPSTREAM iface) {
 570         ICOM_THIS_MULTI(IDirectMusicLoaderResourceStream, StreamVtbl, iface);
 571
 572         TRACE("(%p)\n", iface);
 573         IDirectMusicLoaderResourceStream_Detach (iface);
 574         HeapFree (GetProcessHeap(), 0, This);
 575
 576         return S_OK;
 577 }
 578
 579 /*****************************************************************************
 580  * IDirectMusicLoaderGenericStream implementation
 581  */
 582 /* Custom : */
 583 HRESULT WINAPI IDirectMusicLoaderGenericStream_Attach (LPSTREAM iface, LPSTREAM pStream, LPDIRECTMUSICLOADER pLoader) {
 584         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 585
 586         TRACE("(%p, %p, %p)\n", This, pStream, pLoader);
 587         if (!pStream) {
 588                 WARN(": invalid pStream\n");
 589                 return E_FAIL;
 590         }
 591         if (!pLoader) {
 592                 WARN(": invalid pLoader\n");
 593                 return E_FAIL;
 594         }
 595
 596         IDirectMusicLoaderGenericStream_Detach (iface);
 597         IStream_Clone (pStream, &This->pStream);
 598         This->pLoader = pLoader;
 599
 600     return S_OK;
 601 }
 602
 603 void WINAPI IDirectMusicLoaderGenericStream_Detach (LPSTREAM iface) {
 604         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 605
 606         if (This->pStream)
 607                 IStream_Release (This->pStream);
 608         This->pStream = NULL;
 609 }
 610
 611
 612 /* IUnknown/IStream part: */
 613 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_QueryInterface (LPSTREAM iface, REFIID riid, void** ppobj) {
 614         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 615
 616         TRACE("(%p, %s, %p)\n", This, debugstr_dmguid(riid), ppobj);
 617         if (IsEqualIID (riid, &IID_IUnknown) ||
 618                 IsEqualIID (riid, &IID_IStream)) {
 619                 *ppobj = (LPVOID)&This->StreamVtbl;
 620                 IDirectMusicLoaderGenericStream_IStream_AddRef ((LPSTREAM)&This->StreamVtbl);
 621                 return S_OK;
 622         } else if (IsEqualIID (riid, &IID_IDirectMusicGetLoader)) {
 623                 *ppobj = (LPVOID)&This->GetLoaderVtbl;
 624                 IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_AddRef ((LPDIRECTMUSICGETLOADER)&This->GetLoaderVtbl);
 625                 return S_OK;
 626         }
 627
 628         WARN(": not found\n");
 629         return E_NOINTERFACE;
 630 }
 631
 632 ULONG WINAPI IDirectMusicLoaderGenericStream_IStream_AddRef (LPSTREAM iface) {
 633         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 634         TRACE("(%p): AddRef from %ld\n", This, This->dwRef);
 635         return InterlockedIncrement (&This->dwRef);
 636 }
 637
 638 ULONG WINAPI IDirectMusicLoaderGenericStream_IStream_Release (LPSTREAM iface) {
 639         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 640
 641         DWORD dwRef = InterlockedDecrement (&This->dwRef);
 642         TRACE("(%p): ReleaseRef to %ld\n", This, dwRef);
 643         if (dwRef == 0) {
 644                 DMUSIC_DestroyDirectMusicLoaderGenericStream (iface);
 645         }
 646
 647         return dwRef;
 648 }
 649
 650 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Read (LPSTREAM iface, void* pv, ULONG cb, ULONG* pcbRead) {
 651         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 652
 653         TRACE_(dmfileraw)("(%p, %p, 0x%08lX, %p): redirecting to low-level stream\n", This, pv, cb, pcbRead);
 654         if (!This->pStream)
 655                 return E_FAIL;
 656
 657         return IStream_Read (This->pStream, pv, cb, pcbRead);
 658 }
 659
 660 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Seek (LPSTREAM iface, LARGE_INTEGER dlibMove, DWORD dwOrigin, ULARGE_INTEGER* plibNewPosition) {
 661         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 662         TRACE_(dmfileraw)("(%p, 0x%08llX, %s, %p): redirecting to low-level stream\n", This, dlibMove.QuadPart, resolve_STREAM_SEEK(dwOrigin), plibNewPosition);
 663         if (!This->pStream)
 664                 return E_FAIL;
 665
 666         return IStream_Seek (This->pStream, dlibMove, dwOrigin, plibNewPosition);
 667 }
 668
 669 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Clone (LPSTREAM iface, IStream** ppstm) {
 670         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 671         LPSTREAM pOther = NULL;
 672         LPSTREAM pLowLevel = NULL;
 673         HRESULT result;
 674
 675         TRACE("(%p, %p)\n", iface, ppstm);
 676         result = DMUSIC_CreateDirectMusicLoaderGenericStream ((LPVOID*)&pOther);
 677         if (FAILED(result)) return result;
 678
 679         if (FAILED(IStream_Clone (This->pStream, &pLowLevel)))
 680                 return E_FAIL;
 681
 682         IDirectMusicLoaderGenericStream_Attach (pOther, pLowLevel, This->pLoader);
 683
 684         TRACE(": succeeded\n");
 685         *ppstm = (IStream*)pOther;
 686         return S_OK;
 687 }
 688
 689 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Write (LPSTREAM iface, const void* pv, ULONG cb, ULONG* pcbWritten) {
 690         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 691         TRACE_(dmfileraw)("(%p, %p, 0x%08lX, %p): redirecting to low-level stream\n", This, pv, cb, pcbWritten);
 692         if (!This->pStream)
 693                 return E_FAIL;
 694
 695         return IStream_Write (This->pStream, pv, cb, pcbWritten);
 696 }
 697
 698 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_SetSize (LPSTREAM iface, ULARGE_INTEGER libNewSize) {
 699         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 700         TRACE("(%p, 0x%08llX): redirecting to low-level stream\n", This, libNewSize.QuadPart);
 701         if (!This->pStream)
 702                 return E_FAIL;
 703
 704         return IStream_SetSize (This->pStream, libNewSize);
 705 }
 706
 707 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_CopyTo (LPSTREAM iface, IStream* pstm, ULARGE_INTEGER cb, ULARGE_INTEGER* pcbRead, ULARGE_INTEGER* pcbWritten) {
 708         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 709         TRACE("(%p, %p, 0x%08llX, %p, %p): redirecting to low-level stream\n", This, pstm, cb.QuadPart, pcbRead, pcbWritten);
 710         if (!This->pStream)
 711                 return E_FAIL;
 712
 713         return IStream_CopyTo (This->pStream, pstm, cb, pcbRead, pcbWritten);
 714 }
 715
 716 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Commit (LPSTREAM iface, DWORD grfCommitFlags) {
 717         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 718         TRACE("(%p, 0x%08lX): redirecting to low-level stream\n", This, grfCommitFlags);
 719         if (!This->pStream)
 720                 return E_FAIL;
 721
 722         return IStream_Commit (This->pStream, grfCommitFlags);
 723 }
 724
 725 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Revert (LPSTREAM iface) {
 726         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 727         TRACE("(%p): redirecting to low-level stream\n", This);
 728         if (!This->pStream)
 729                 return E_FAIL;
 730
 731         return IStream_Revert (This->pStream);
 732 }
 733
 734 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_LockRegion (LPSTREAM iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
 735         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 736         TRACE("(%p, 0x%08llX, 0x%08llX, 0x%08lX): redirecting to low-level stream\n", This, libOffset.QuadPart, cb.QuadPart, dwLockType);
 737         if (!This->pStream)
 738                 return E_FAIL;
 739
 740         return IStream_LockRegion (This->pStream, libOffset, cb, dwLockType);
 741 }
 742
 743 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_UnlockRegion (LPSTREAM iface, ULARGE_INTEGER libOffset, ULARGE_INTEGER cb, DWORD dwLockType) {
 744         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 745         TRACE("(%p, 0x%08llX, 0x%08llX, 0x%08lX): redirecting to low-level stream\n", This, libOffset.QuadPart, cb.QuadPart, dwLockType);
 746         if (!This->pStream)
 747                 return E_FAIL;
 748
 749         return IStream_UnlockRegion (This->pStream, libOffset, cb, dwLockType);
 750 }
 751
 752 HRESULT WINAPI IDirectMusicLoaderGenericStream_IStream_Stat (LPSTREAM iface, STATSTG* pstatstg, DWORD grfStatFlag) {
 753         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 754         TRACE("(%p, %p, 0x%08lX): redirecting to low-level stream\n", This, pstatstg, grfStatFlag);
 755         if (!This->pStream)
 756                 return E_FAIL;
 757
 758         return IStream_Stat (This->pStream, pstatstg, grfStatFlag);
 759 }
 760
 761 ICOM_VTABLE(IStream) DirectMusicLoaderGenericStream_Stream_Vtbl = {
 762     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 763         IDirectMusicLoaderGenericStream_IStream_QueryInterface,
 764         IDirectMusicLoaderGenericStream_IStream_AddRef,
 765         IDirectMusicLoaderGenericStream_IStream_Release,
 766         IDirectMusicLoaderGenericStream_IStream_Read,
 767         IDirectMusicLoaderGenericStream_IStream_Write,
 768         IDirectMusicLoaderGenericStream_IStream_Seek,
 769         IDirectMusicLoaderGenericStream_IStream_SetSize,
 770         IDirectMusicLoaderGenericStream_IStream_CopyTo,
 771         IDirectMusicLoaderGenericStream_IStream_Commit,
 772         IDirectMusicLoaderGenericStream_IStream_Revert,
 773         IDirectMusicLoaderGenericStream_IStream_LockRegion,
 774         IDirectMusicLoaderGenericStream_IStream_UnlockRegion,
 775         IDirectMusicLoaderGenericStream_IStream_Stat,
 776         IDirectMusicLoaderGenericStream_IStream_Clone
 777 };
 778
 779 /* IDirectMusicGetLoader part: */
 780 HRESULT WINAPI IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_QueryInterface (LPDIRECTMUSICGETLOADER iface, REFIID riid, void** ppobj) {
 781         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, GetLoaderVtbl, iface);
 782         return IDirectMusicLoaderGenericStream_IStream_QueryInterface ((LPSTREAM)&This->StreamVtbl, riid, ppobj);
 783 }
 784
 785 ULONG WINAPI IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_AddRef (LPDIRECTMUSICGETLOADER iface) {
 786         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, GetLoaderVtbl, iface);
 787         return IDirectMusicLoaderGenericStream_IStream_AddRef ((LPSTREAM)&This->StreamVtbl);
 788 }
 789
 790 ULONG WINAPI IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_Release (LPDIRECTMUSICGETLOADER iface) {
 791         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, GetLoaderVtbl, iface);
 792         return IDirectMusicLoaderGenericStream_IStream_Release ((LPSTREAM)&This->StreamVtbl);
 793 }
 794
 795 HRESULT WINAPI IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_GetLoader (LPDIRECTMUSICGETLOADER iface, IDirectMusicLoader **ppLoader) {
 796         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, GetLoaderVtbl, iface);
 797
 798         TRACE("(%p, %p)\n", This, ppLoader);
 799         *ppLoader = (LPDIRECTMUSICLOADER)This->pLoader;
 800         IDirectMusicLoader8_AddRef ((LPDIRECTMUSICLOADER8)*ppLoader);
 801
 802         return S_OK;
 803 }
 804
 805 ICOM_VTABLE(IDirectMusicGetLoader) DirectMusicLoaderGenericStream_GetLoader_Vtbl = {
 806     ICOM_MSVTABLE_COMPAT_DummyRTTIVALUE
 807         IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_QueryInterface,
 808         IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_AddRef,
 809         IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_Release,
 810         IDirectMusicLoaderGenericStream_IDirectMusicGetLoader_GetLoader
 811 };
 812
 813 HRESULT WINAPI DMUSIC_CreateDirectMusicLoaderGenericStream (LPVOID* ppobj) {
 814         IDirectMusicLoaderGenericStream *obj;
 815
 816         TRACE("(%p)\n", ppobj);
 817         obj = HeapAlloc (GetProcessHeap (), HEAP_ZERO_MEMORY, sizeof(IDirectMusicLoaderGenericStream));
 818         if (NULL == obj) {
 819                 *ppobj = (LPVOID) NULL;
 820                 return E_OUTOFMEMORY;
 821         }
 822         obj->StreamVtbl = &DirectMusicLoaderGenericStream_Stream_Vtbl;
 823         obj->GetLoaderVtbl = &DirectMusicLoaderGenericStream_GetLoader_Vtbl;
 824         obj->dwRef = 0; /* will be inited with QueryInterface */
 825
 826         return IDirectMusicLoaderGenericStream_IStream_QueryInterface ((LPSTREAM)&obj->StreamVtbl, &IID_IStream, ppobj);
 827 }
 828
 829 HRESULT WINAPI DMUSIC_DestroyDirectMusicLoaderGenericStream (LPSTREAM iface) {
 830         ICOM_THIS_MULTI(IDirectMusicLoaderGenericStream, StreamVtbl, iface);
 831
 832         TRACE("(%p)\n", iface);
 833         IDirectMusicLoaderGenericStream_Detach (iface);
 834         HeapFree (GetProcessHeap(), 0, This);
 835
 836         return S_OK;
 837 }