dlls/quartz/filesource.c

   1 /*
   2  * File Source Filter
   3  *
   4  * Copyright 2003 Robert Shearman
   5  *
   6  * This library is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU Lesser General Public
   8  * License as published by the Free Software Foundation; either
   9  * version 2.1 of the License, or (at your option) any later version.
  10  *
  11  * This library is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * Lesser General Public License for more details.
  15  *
  16  * You should have received a copy of the GNU Lesser General Public
  17  * License along with this library; if not, write to the Free Software
  18  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  19  */
  20
  21 #define NONAMELESSUNION
  22 #define NONAMELESSSTRUCT
  23
  24 #include "quartz_private.h"
  25
  26 #include "wine/debug.h"
  27 #include "wine/unicode.h"
  28 #include "pin.h"
  29 #include "uuids.h"
  30 #include "vfwmsgs.h"
  31 #include "winbase.h"
  32 #include "winreg.h"
  33 #include <assert.h>
  34
  35 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  36
  37 static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 };
  38
  39 typedef struct AsyncReader
  40 {
  41     const IBaseFilterVtbl * lpVtbl;
  42     const IFileSourceFilterVtbl * lpVtblFSF;
  43
  44     LONG refCount;
  45     FILTER_INFO filterInfo;
  46     FILTER_STATE state;
  47     CRITICAL_SECTION csFilter;
  48
  49     IPin * pOutputPin;
  50     LPOLESTR pszFileName;
  51     AM_MEDIA_TYPE * pmt;
  52 } AsyncReader;
  53
  54 static const IBaseFilterVtbl AsyncReader_Vtbl;
  55 static const IFileSourceFilterVtbl FileSource_Vtbl;
  56 static const IAsyncReaderVtbl FileAsyncReader_Vtbl;
  57
  58 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);
  59
  60 static inline AsyncReader *impl_from_IFileSourceFilter( IFileSourceFilter *iface )
  61 {
  62     return (AsyncReader *)((char*)iface - FIELD_OFFSET(AsyncReader, lpVtblFSF));
  63 }
  64
  65 static HRESULT process_extensions(HKEY hkeyExtensions, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
  66 {
  67     /* FIXME: implement */
  68     return E_NOTIMPL;
  69 }
  70
  71 static unsigned char byte_from_hex_char(WCHAR wHex)
  72 {
  73     switch (tolowerW(wHex))
  74     {
  75     case '0':
  76     case '1':
  77     case '2':
  78     case '3':
  79     case '4':
  80     case '5':
  81     case '6':
  82     case '7':
  83     case '8':
  84     case '9':
  85         return (wHex - '0') & 0xf;
  86     case 'a':
  87     case 'b':
  88     case 'c':
  89     case 'd':
  90     case 'e':
  91     case 'f':
  92         return (wHex - 'a' + 10) & 0xf;
  93     default:
  94         return 0;
  95     }
  96 }
  97
  98 static HRESULT process_pattern_string(LPCWSTR wszPatternString, IAsyncReader * pReader)
  99 {
 100     ULONG ulOffset;
 101     ULONG ulBytes;
 102     BYTE * pbMask;
 103     BYTE * pbValue;
 104     BYTE * pbFile;
 105     HRESULT hr = S_OK;
 106     ULONG strpos;
 107
 108     TRACE("\t\tPattern string: %s\n", debugstr_w(wszPatternString));
 109
 110     /* format: "offset, bytestocompare, mask, value" */
 111
 112     ulOffset = strtolW(wszPatternString, NULL, 10);
 113
 114     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 115         return E_INVALIDARG;
 116
 117     wszPatternString++; /* skip ',' */
 118
 119     ulBytes = strtolW(wszPatternString, NULL, 10);
 120
 121     pbMask = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 122     pbValue = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ulBytes);
 123     pbFile = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 124
 125     /* default mask is match everything */
 126     memset(pbMask, 0xFF, ulBytes);
 127
 128     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 129         hr = E_INVALIDARG;
 130
 131     wszPatternString++; /* skip ',' */
 132
 133     if (hr == S_OK)
 134     {
 135         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 136             ;
 137
 138         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 139         {
 140             if ((strpos % 2) == 1) /* odd numbered position */
 141                 pbMask[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 142             else
 143                 pbMask[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 144         }
 145
 146         if (!(wszPatternString = strchrW(wszPatternString, ',')))
 147             hr = E_INVALIDARG;
 148
 149         wszPatternString++; /* skip ',' */
 150     }
 151
 152     if (hr == S_OK)
 153     {
 154         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 155             ;
 156
 157         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 158         {
 159             if ((strpos % 2) == 1) /* odd numbered position */
 160                 pbValue[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 161             else
 162                 pbValue[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 163         }
 164     }
 165
 166     if (hr == S_OK)
 167         hr = IAsyncReader_SyncRead(pReader, ulOffset, ulBytes, pbFile);
 168
 169     if (hr == S_OK)
 170     {
 171         ULONG i;
 172         for (i = 0; i < ulBytes; i++)
 173             if ((pbFile[i] & pbMask[i]) != pbValue[i])
 174             {
 175                 hr = S_FALSE;
 176                 break;
 177             }
 178     }
 179
 180     HeapFree(GetProcessHeap(), 0, pbMask);
 181     HeapFree(GetProcessHeap(), 0, pbValue);
 182     HeapFree(GetProcessHeap(), 0, pbFile);
 183
 184     /* if we encountered no errors with this string, and there is a following tuple, then we
 185      * have to match that as well to succeed */
 186     if ((hr == S_OK) && (wszPatternString = strchrW(wszPatternString, ',')))
 187         return process_pattern_string(wszPatternString + 1, pReader);
 188     else
 189         return hr;
 190 }
 191
 192 static HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
 193 {
 194     HKEY hkeyMediaType = NULL;
 195     LONG lRet;
 196     HRESULT hr = S_OK;
 197     BOOL bFound = FALSE;
 198     static const WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
 199
 200     CopyMemory(majorType, &GUID_NULL, sizeof(*majorType));
 201     CopyMemory(minorType, &GUID_NULL, sizeof(*minorType));
 202
 203     lRet = RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &hkeyMediaType);
 204     hr = HRESULT_FROM_WIN32(lRet);
 205
 206     if (SUCCEEDED(hr))
 207     {
 208         DWORD indexMajor;
 209
 210         for (indexMajor = 0; !bFound; indexMajor++)
 211         {
 212             HKEY hkeyMajor;
 213             WCHAR wszMajorKeyName[CHARS_IN_GUID];
 214             DWORD dwKeyNameLength = sizeof(wszMajorKeyName) / sizeof(wszMajorKeyName[0]);
 215             static const WCHAR wszExtensions[] = {'E','x','t','e','n','s','i','o','n','s',0};
 216
 217             if (RegEnumKeyExW(hkeyMediaType, indexMajor, wszMajorKeyName, &dwKeyNameLength, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 218                 break;
 219             if (RegOpenKeyExW(hkeyMediaType, wszMajorKeyName, 0, KEY_READ, &hkeyMajor) != ERROR_SUCCESS)
 220                 break;
 221             TRACE("%s\n", debugstr_w(wszMajorKeyName));
 222             if (!strcmpW(wszExtensions, wszMajorKeyName))
 223             {
 224                 if (process_extensions(hkeyMajor, pszFileName, majorType, minorType) == S_OK)
 225                     bFound = TRUE;
 226             }
 227             else
 228             {
 229                 DWORD indexMinor;
 230
 231                 for (indexMinor = 0; !bFound; indexMinor++)
 232                 {
 233                     HKEY hkeyMinor;
 234                     WCHAR wszMinorKeyName[CHARS_IN_GUID];
 235                     DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]);
 236                     DWORD maxValueLen;
 237                     DWORD indexValue;
 238
 239                     if (RegEnumKeyExW(hkeyMajor, indexMinor, wszMinorKeyName, &dwMinorKeyNameLen, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 240                         break;
 241
 242                     if (RegOpenKeyExW(hkeyMajor, wszMinorKeyName, 0, KEY_READ, &hkeyMinor) != ERROR_SUCCESS)
 243                         break;
 244
 245                     TRACE("\t%s\n", debugstr_w(wszMinorKeyName));
 246
 247                     if (RegQueryInfoKeyW(hkeyMinor, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &maxValueLen, NULL, NULL) != ERROR_SUCCESS)
 248                         break;
 249
 250                     for (indexValue = 0; !bFound; indexValue++)
 251                     {
 252                         DWORD dwType;
 253                         WCHAR wszValueName[14]; /* longest name we should encounter will be "Source Filter" */
 254                         LPWSTR wszPatternString = HeapAlloc(GetProcessHeap(), 0, maxValueLen);
 255                         DWORD dwValueNameLen = sizeof(wszValueName) / sizeof(wszValueName[0]); /* remember this is in chars */
 256                         DWORD dwDataLen = maxValueLen; /* remember this is in bytes */
 257                         static const WCHAR wszSourceFilter[] = {'S','o','u','r','c','e',' ','F','i','l','t','e','r',0};
 258                         LONG temp;
 259
 260                         if ((temp = RegEnumValueW(hkeyMinor, indexValue, wszValueName, &dwValueNameLen, NULL, &dwType, (LPBYTE)wszPatternString, &dwDataLen)) != ERROR_SUCCESS)
 261                         {
 262                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 263                             break;
 264                         }
 265
 266                         /* if it is not the source filter value */
 267                         if (strcmpW(wszValueName, wszSourceFilter))
 268                         {
 269                             if (process_pattern_string(wszPatternString, pReader) == S_OK)
 270                             {
 271                                 if (SUCCEEDED(CLSIDFromString(wszMajorKeyName, majorType)) &&
 272                                     SUCCEEDED(CLSIDFromString(wszMinorKeyName, minorType)))
 273                                     bFound = TRUE;
 274                             }
 275                         }
 276                         HeapFree(GetProcessHeap(), 0, wszPatternString);
 277                     }
 278                     CloseHandle(hkeyMinor);
 279                 }
 280             }
 281             CloseHandle(hkeyMajor);
 282         }
 283     }
 284     CloseHandle(hkeyMediaType);
 285
 286     if (SUCCEEDED(hr) && !bFound)
 287     {
 288         ERR("Media class not found\n");
 289         hr = E_FAIL;
 290     }
 291     else if (bFound)
 292         TRACE("Found file's class: major = %s, subtype = %s\n", qzdebugstr_guid(majorType), qzdebugstr_guid(minorType));
 293
 294     return hr;
 295 }
 296
 297 HRESULT AsyncReader_create(IUnknown * pUnkOuter, LPVOID * ppv)
 298 {
 299     AsyncReader *pAsyncRead;
 300
 301     if( pUnkOuter )
 302         return CLASS_E_NOAGGREGATION;
 303
 304     pAsyncRead = CoTaskMemAlloc(sizeof(AsyncReader));
 305
 306     if (!pAsyncRead)
 307         return E_OUTOFMEMORY;
 308
 309     pAsyncRead->lpVtbl = &AsyncReader_Vtbl;
 310     pAsyncRead->lpVtblFSF = &FileSource_Vtbl;
 311     pAsyncRead->refCount = 1;
 312     pAsyncRead->filterInfo.achName[0] = '\0';
 313     pAsyncRead->filterInfo.pGraph = NULL;
 314     pAsyncRead->pOutputPin = NULL;
 315
 316     InitializeCriticalSection(&pAsyncRead->csFilter);
 317     pAsyncRead->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": AsyncReader.csFilter");
 318
 319     pAsyncRead->pszFileName = NULL;
 320     pAsyncRead->pmt = NULL;
 321
 322     *ppv = (LPVOID)pAsyncRead;
 323
 324     TRACE("-- created at %p\n", pAsyncRead);
 325
 326     return S_OK;
 327 }
 328
 329 /** IUnknown methods **/
 330
 331 static HRESULT WINAPI AsyncReader_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 332 {
 333     AsyncReader *This = (AsyncReader *)iface;
 334
 335     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 336
 337     *ppv = NULL;
 338
 339     if (IsEqualIID(riid, &IID_IUnknown))
 340         *ppv = (LPVOID)This;
 341     else if (IsEqualIID(riid, &IID_IPersist))
 342         *ppv = (LPVOID)This;
 343     else if (IsEqualIID(riid, &IID_IMediaFilter))
 344         *ppv = (LPVOID)This;
 345     else if (IsEqualIID(riid, &IID_IBaseFilter))
 346         *ppv = (LPVOID)This;
 347     else if (IsEqualIID(riid, &IID_IFileSourceFilter))
 348         *ppv = (LPVOID)(&This->lpVtblFSF);
 349
 350     if (*ppv)
 351     {
 352         IUnknown_AddRef((IUnknown *)(*ppv));
 353         return S_OK;
 354     }
 355
 356     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 357
 358     return E_NOINTERFACE;
 359 }
 360
 361 static ULONG WINAPI AsyncReader_AddRef(IBaseFilter * iface)
 362 {
 363     AsyncReader *This = (AsyncReader *)iface;
 364     ULONG refCount = InterlockedIncrement(&This->refCount);
 365
 366     TRACE("(%p)->() AddRef from %d\n", This, refCount - 1);
 367
 368     return refCount;
 369 }
 370
 371 static ULONG WINAPI AsyncReader_Release(IBaseFilter * iface)
 372 {
 373     AsyncReader *This = (AsyncReader *)iface;
 374     ULONG refCount = InterlockedDecrement(&This->refCount);
 375
 376     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 377
 378     if (!refCount)
 379     {
 380         if (This->pOutputPin)
 381             IPin_Release(This->pOutputPin);
 382         This->csFilter.DebugInfo->Spare[0] = 0;
 383         DeleteCriticalSection(&This->csFilter);
 384         This->lpVtbl = NULL;
 385         CoTaskMemFree(This);
 386         return 0;
 387     }
 388     else
 389         return refCount;
 390 }
 391
 392 /** IPersist methods **/
 393
 394 static HRESULT WINAPI AsyncReader_GetClassID(IBaseFilter * iface, CLSID * pClsid)
 395 {
 396     TRACE("(%p)\n", pClsid);
 397
 398     *pClsid = CLSID_AsyncReader;
 399
 400     return S_OK;
 401 }
 402
 403 /** IMediaFilter methods **/
 404
 405 static HRESULT WINAPI AsyncReader_Stop(IBaseFilter * iface)
 406 {
 407     AsyncReader *This = (AsyncReader *)iface;
 408
 409     TRACE("()\n");
 410
 411     This->state = State_Stopped;
 412
 413     return S_OK;
 414 }
 415
 416 static HRESULT WINAPI AsyncReader_Pause(IBaseFilter * iface)
 417 {
 418     AsyncReader *This = (AsyncReader *)iface;
 419
 420     TRACE("()\n");
 421
 422     This->state = State_Paused;
 423
 424     return S_OK;
 425 }
 426
 427 static HRESULT WINAPI AsyncReader_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 428 {
 429     AsyncReader *This = (AsyncReader *)iface;
 430
 431     TRACE("(%x%08x)\n", (ULONG)(tStart >> 32), (ULONG)tStart);
 432
 433     This->state = State_Running;
 434
 435     return S_OK;
 436 }
 437
 438 static HRESULT WINAPI AsyncReader_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState)
 439 {
 440     AsyncReader *This = (AsyncReader *)iface;
 441
 442     TRACE("(%u, %p)\n", dwMilliSecsTimeout, pState);
 443
 444     *pState = This->state;
 445
 446     return S_OK;
 447 }
 448
 449 static HRESULT WINAPI AsyncReader_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
 450 {
 451 /*    AsyncReader *This = (AsyncReader *)iface;*/
 452
 453     TRACE("(%p)\n", pClock);
 454
 455     return S_OK;
 456 }
 457
 458 static HRESULT WINAPI AsyncReader_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
 459 {
 460 /*    AsyncReader *This = (AsyncReader *)iface;*/
 461
 462     TRACE("(%p)\n", ppClock);
 463
 464     return S_OK;
 465 }
 466
 467 /** IBaseFilter methods **/
 468
 469 static HRESULT WINAPI AsyncReader_EnumPins(IBaseFilter * iface, IEnumPins **ppEnum)
 470 {
 471     ENUMPINDETAILS epd;
 472     AsyncReader *This = (AsyncReader *)iface;
 473
 474     TRACE("(%p)\n", ppEnum);
 475
 476     epd.cPins = This->pOutputPin ? 1 : 0;
 477     epd.ppPins = &This->pOutputPin;
 478     return IEnumPinsImpl_Construct(&epd, ppEnum);
 479 }
 480
 481 static HRESULT WINAPI AsyncReader_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 482 {
 483     FIXME("(%s, %p)\n", debugstr_w(Id), ppPin);
 484
 485     return E_NOTIMPL;
 486 }
 487
 488 static HRESULT WINAPI AsyncReader_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
 489 {
 490     AsyncReader *This = (AsyncReader *)iface;
 491
 492     TRACE("(%p)\n", pInfo);
 493
 494     strcpyW(pInfo->achName, This->filterInfo.achName);
 495     pInfo->pGraph = This->filterInfo.pGraph;
 496
 497     if (pInfo->pGraph)
 498         IFilterGraph_AddRef(pInfo->pGraph);
 499
 500     return S_OK;
 501 }
 502
 503 static HRESULT WINAPI AsyncReader_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName)
 504 {
 505     AsyncReader *This = (AsyncReader *)iface;
 506
 507     TRACE("(%p, %s)\n", pGraph, debugstr_w(pName));
 508
 509     if (pName)
 510         strcpyW(This->filterInfo.achName, pName);
 511     else
 512         *This->filterInfo.achName = 0;
 513     This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
 514
 515     return S_OK;
 516 }
 517
 518 static HRESULT WINAPI AsyncReader_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
 519 {
 520     FIXME("(%p)\n", pVendorInfo);
 521
 522     return E_NOTIMPL;
 523 }
 524
 525 static const IBaseFilterVtbl AsyncReader_Vtbl =
 526 {
 527     AsyncReader_QueryInterface,
 528     AsyncReader_AddRef,
 529     AsyncReader_Release,
 530     AsyncReader_GetClassID,
 531     AsyncReader_Stop,
 532     AsyncReader_Pause,
 533     AsyncReader_Run,
 534     AsyncReader_GetState,
 535     AsyncReader_SetSyncSource,
 536     AsyncReader_GetSyncSource,
 537     AsyncReader_EnumPins,
 538     AsyncReader_FindPin,
 539     AsyncReader_QueryFilterInfo,
 540     AsyncReader_JoinFilterGraph,
 541     AsyncReader_QueryVendorInfo
 542 };
 543
 544 static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
 545 {
 546     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 547
 548     return IBaseFilter_QueryInterface((IFileSourceFilter*)&This->lpVtbl, riid, ppv);
 549 }
 550
 551 static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
 552 {
 553     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 554
 555     return IBaseFilter_AddRef((IFileSourceFilter*)&This->lpVtbl);
 556 }
 557
 558 static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
 559 {
 560     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 561
 562     return IBaseFilter_Release((IFileSourceFilter*)&This->lpVtbl);
 563 }
 564
 565 static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
 566 {
 567     HRESULT hr;
 568     HANDLE hFile;
 569     IAsyncReader * pReader = NULL;
 570     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 571
 572     TRACE("(%s, %p)\n", debugstr_w(pszFileName), pmt);
 573
 574     /* open file */
 575     /* FIXME: check the sharing values that native uses */
 576     hFile = CreateFileW(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
 577
 578     if (hFile == INVALID_HANDLE_VALUE)
 579     {
 580         return HRESULT_FROM_WIN32(GetLastError());
 581     }
 582
 583     /* create pin */
 584     hr = FileAsyncReader_Construct(hFile, (IBaseFilter *)&This->lpVtbl, &This->csFilter, &This->pOutputPin);
 585
 586     if (SUCCEEDED(hr))
 587         hr = IPin_QueryInterface(This->pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader);
 588
 589     /* store file name & media type */
 590     if (SUCCEEDED(hr))
 591     {
 592         This->pszFileName = CoTaskMemAlloc((strlenW(pszFileName) + 1) * sizeof(WCHAR));
 593         strcpyW(This->pszFileName, pszFileName);
 594         This->pmt = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
 595         if (!pmt)
 596         {
 597             This->pmt->bFixedSizeSamples = TRUE;
 598             This->pmt->bTemporalCompression = FALSE;
 599             This->pmt->cbFormat = 0;
 600             This->pmt->pbFormat = NULL;
 601             This->pmt->pUnk = NULL;
 602             This->pmt->lSampleSize = 0;
 603             memcpy(&This->pmt->formattype, &FORMAT_None, sizeof(FORMAT_None));
 604             hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype);
 605             if (FAILED(hr))
 606             {
 607                 CoTaskMemFree(This->pmt);
 608                 This->pmt = NULL;
 609             }
 610         }
 611         else
 612             CopyMediaType(This->pmt, pmt);
 613     }
 614
 615     if (pReader)
 616         IAsyncReader_Release(pReader);
 617
 618     if (FAILED(hr))
 619     {
 620         if (This->pOutputPin)
 621         {
 622             IPin_Release(This->pOutputPin);
 623             This->pOutputPin = NULL;
 624         }
 625
 626         CoTaskMemFree(This->pszFileName);
 627         This->pszFileName = NULL;
 628
 629         CloseHandle(hFile);
 630     }
 631
 632     /* FIXME: check return codes */
 633     return hr;
 634 }
 635
 636 static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter * iface, LPOLESTR * ppszFileName, AM_MEDIA_TYPE * pmt)
 637 {
 638     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 639
 640     TRACE("(%p, %p)\n", ppszFileName, pmt);
 641
 642     if (!ppszFileName)
 643         return E_POINTER;
 644
 645     /* copy file name & media type if available, otherwise clear the outputs */
 646     if (This->pszFileName)
 647     {
 648         *ppszFileName = CoTaskMemAlloc((strlenW(This->pszFileName) + 1) * sizeof(WCHAR));
 649         strcpyW(*ppszFileName, This->pszFileName);
 650     }
 651     else
 652         *ppszFileName = NULL;
 653
 654     if (pmt)
 655     {
 656         if (This->pmt)
 657             CopyMediaType(pmt, This->pmt);
 658         else
 659             ZeroMemory(pmt, sizeof(*pmt));
 660     }
 661
 662     return S_OK;
 663 }
 664
 665 static const IFileSourceFilterVtbl FileSource_Vtbl =
 666 {
 667     FileSource_QueryInterface,
 668     FileSource_AddRef,
 669     FileSource_Release,
 670     FileSource_Load,
 671     FileSource_GetCurFile
 672 };
 673
 674
 675 /* the dwUserData passed back to user */
 676 typedef struct DATAREQUEST
 677 {
 678     IMediaSample * pSample; /* sample passed to us by user */
 679     DWORD_PTR dwUserData; /* user data passed to us */
 680     OVERLAPPED ovl; /* our overlapped structure */
 681
 682     struct DATAREQUEST * pNext; /* next data request in list */
 683 } DATAREQUEST;
 684
 685 static void queue(DATAREQUEST * pHead, DATAREQUEST * pItem)
 686 {
 687     DATAREQUEST * pCurrent;
 688     for (pCurrent = pHead; pCurrent->pNext; pCurrent = pCurrent->pNext)
 689         ;
 690     pCurrent->pNext = pItem;
 691 }
 692
 693 typedef struct FileAsyncReader
 694 {
 695     OutputPin pin;
 696     const struct IAsyncReaderVtbl * lpVtblAR;
 697
 698     HANDLE hFile;
 699     HANDLE hEvent;
 700     BOOL bFlushing;
 701     DATAREQUEST * pHead; /* head of data request list */
 702     CRITICAL_SECTION csList; /* critical section to protect operations on list */
 703 } FileAsyncReader;
 704
 705 static inline FileAsyncReader *impl_from_IAsyncReader( IAsyncReader *iface )
 706 {
 707     return (FileAsyncReader *)((char*)iface - FIELD_OFFSET(FileAsyncReader, lpVtblAR));
 708 }
 709
 710 static HRESULT AcceptProcAFR(LPVOID iface, const AM_MEDIA_TYPE *pmt)
 711 {
 712     AsyncReader *This = (AsyncReader *)iface;
 713
 714     FIXME("(%p, %p)\n", iface, pmt);
 715
 716     if (IsEqualGUID(&pmt->majortype, &This->pmt->majortype) &&
 717         IsEqualGUID(&pmt->subtype, &This->pmt->subtype) &&
 718         IsEqualGUID(&pmt->formattype, &FORMAT_None))
 719         return S_OK;
 720
 721     return S_FALSE;
 722 }
 723
 724 /* overriden pin functions */
 725
 726 static HRESULT WINAPI FileAsyncReaderPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 727 {
 728     FileAsyncReader *This = (FileAsyncReader *)iface;
 729     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 730
 731     *ppv = NULL;
 732
 733     if (IsEqualIID(riid, &IID_IUnknown))
 734         *ppv = (LPVOID)This;
 735     else if (IsEqualIID(riid, &IID_IPin))
 736         *ppv = (LPVOID)This;
 737     else if (IsEqualIID(riid, &IID_IAsyncReader))
 738         *ppv = (LPVOID)&This->lpVtblAR;
 739
 740     if (*ppv)
 741     {
 742         IUnknown_AddRef((IUnknown *)(*ppv));
 743         return S_OK;
 744     }
 745
 746     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 747
 748     return E_NOINTERFACE;
 749 }
 750
 751 static ULONG WINAPI FileAsyncReaderPin_Release(IPin * iface)
 752 {
 753     FileAsyncReader *This = (FileAsyncReader *)iface;
 754     ULONG refCount = InterlockedDecrement(&This->pin.pin.refCount);
 755
 756     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 757
 758     if (!refCount)
 759     {
 760         DATAREQUEST * pCurrent;
 761         DATAREQUEST * pNext;
 762         for (pCurrent = This->pHead; pCurrent; pCurrent = pNext)
 763         {
 764             pNext = pCurrent->pNext;
 765             CoTaskMemFree(pCurrent);
 766         }
 767         CloseHandle(This->hFile);
 768         CloseHandle(This->hEvent);
 769         This->csList.DebugInfo->Spare[0] = 0;
 770         DeleteCriticalSection(&This->csList);
 771         CoTaskMemFree(This);
 772         return 0;
 773     }
 774     return refCount;
 775 }
 776
 777 static HRESULT WINAPI FileAsyncReaderPin_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 778 {
 779     ENUMMEDIADETAILS emd;
 780     FileAsyncReader *This = (FileAsyncReader *)iface;
 781
 782     TRACE("(%p)\n", ppEnum);
 783
 784     emd.cMediaTypes = 1;
 785     emd.pMediaTypes = ((AsyncReader *)This->pin.pin.pinInfo.pFilter)->pmt;
 786
 787     return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
 788 }
 789
 790 static const IPinVtbl FileAsyncReaderPin_Vtbl =
 791 {
 792     FileAsyncReaderPin_QueryInterface,
 793     IPinImpl_AddRef,
 794     FileAsyncReaderPin_Release,
 795     OutputPin_Connect,
 796     OutputPin_ReceiveConnection,
 797     IPinImpl_Disconnect,
 798     IPinImpl_ConnectedTo,
 799     IPinImpl_ConnectionMediaType,
 800     IPinImpl_QueryPinInfo,
 801     IPinImpl_QueryDirection,
 802     IPinImpl_QueryId,
 803     IPinImpl_QueryAccept,
 804     FileAsyncReaderPin_EnumMediaTypes,
 805     IPinImpl_QueryInternalConnections,
 806     OutputPin_EndOfStream,
 807     OutputPin_BeginFlush,
 808     OutputPin_EndFlush,
 809     OutputPin_NewSegment
 810 };
 811
 812 /* Function called as a helper to IPin_Connect */
 813 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 814 /* this differs from standard OutputPin_ConnectSpecific only in that it
 815  * doesn't need the IMemInputPin interface on the receiving pin */
 816 static HRESULT FileAsyncReaderPin_ConnectSpecific(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 817 {
 818     OutputPin *This = (OutputPin *)iface;
 819     HRESULT hr;
 820
 821     TRACE("(%p, %p)\n", pReceivePin, pmt);
 822     dump_AM_MEDIA_TYPE(pmt);
 823
 824     /* FIXME: call queryacceptproc */
 825
 826     This->pin.pConnectedTo = pReceivePin;
 827     IPin_AddRef(pReceivePin);
 828     CopyMediaType(&This->pin.mtCurrent, pmt);
 829
 830     hr = IPin_ReceiveConnection(pReceivePin, iface, pmt);
 831
 832     if (FAILED(hr))
 833     {
 834         IPin_Release(This->pin.pConnectedTo);
 835         This->pin.pConnectedTo = NULL;
 836         FreeMediaType(&This->pin.mtCurrent);
 837     }
 838
 839     TRACE(" -- %x\n", hr);
 840     return hr;
 841 }
 842
 843 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 844 {
 845     FileAsyncReader * pPinImpl;
 846     PIN_INFO piOutput;
 847
 848     *ppPin = NULL;
 849
 850     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 851
 852     if (!pPinImpl)
 853         return E_OUTOFMEMORY;
 854
 855     piOutput.dir = PINDIR_OUTPUT;
 856     piOutput.pFilter = pBaseFilter;
 857     strcpyW(piOutput.achName, wszOutputPinName);
 858
 859     if (SUCCEEDED(OutputPin_Init(&piOutput, NULL, pBaseFilter, AcceptProcAFR, pCritSec, &pPinImpl->pin)))
 860     {
 861         pPinImpl->pin.pin.lpVtbl = &FileAsyncReaderPin_Vtbl;
 862         pPinImpl->lpVtblAR = &FileAsyncReader_Vtbl;
 863         pPinImpl->hFile = hFile;
 864         pPinImpl->hEvent = CreateEventW(NULL, 0, 0, NULL);
 865         pPinImpl->bFlushing = FALSE;
 866         pPinImpl->pHead = NULL;
 867         pPinImpl->pin.pConnectSpecific = FileAsyncReaderPin_ConnectSpecific;
 868         InitializeCriticalSection(&pPinImpl->csList);
 869         pPinImpl->csList.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FileAsyncReader.csList");
 870
 871         *ppPin = (IPin *)(&pPinImpl->pin.pin.lpVtbl);
 872         return S_OK;
 873     }
 874     return E_FAIL;
 875 }
 876
 877 /* IAsyncReader */
 878
 879 static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader * iface, REFIID riid, LPVOID * ppv)
 880 {
 881     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 882
 883     return IPin_QueryInterface((IPin *)This, riid, ppv);
 884 }
 885
 886 static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
 887 {
 888     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 889
 890     return IPin_AddRef((IPin *)This);
 891 }
 892
 893 static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
 894 {
 895     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 896
 897     return IPin_Release((IPin *)This);
 898 }
 899
 900 #define DEF_ALIGNMENT 1
 901
 902 static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader * iface, IMemAllocator * pPreferred, ALLOCATOR_PROPERTIES * pProps, IMemAllocator ** ppActual)
 903 {
 904     HRESULT hr = S_OK;
 905
 906     TRACE("(%p, %p, %p)\n", pPreferred, pProps, ppActual);
 907
 908     if (!pProps->cbAlign || (pProps->cbAlign % DEF_ALIGNMENT) != 0)
 909         pProps->cbAlign = DEF_ALIGNMENT;
 910
 911     if (pPreferred)
 912     {
 913         ALLOCATOR_PROPERTIES PropsActual;
 914         hr = IMemAllocator_SetProperties(pPreferred, pProps, &PropsActual);
 915         /* FIXME: check we are still aligned */
 916         if (SUCCEEDED(hr))
 917         {
 918             IMemAllocator_AddRef(pPreferred);
 919             *ppActual = pPreferred;
 920             TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
 921             return S_OK;
 922         }
 923     }
 924
 925     pPreferred = NULL;
 926
 927     hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC, &IID_IMemAllocator, (LPVOID *)&pPreferred);
 928
 929     if (SUCCEEDED(hr))
 930     {
 931         ALLOCATOR_PROPERTIES PropsActual;
 932         hr = IMemAllocator_SetProperties(pPreferred, pProps, &PropsActual);
 933         /* FIXME: check we are still aligned */
 934         if (SUCCEEDED(hr))
 935         {
 936             *ppActual = pPreferred;
 937             TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
 938             return S_OK;
 939         }
 940     }
 941
 942     if (FAILED(hr))
 943     {
 944         *ppActual = NULL;
 945         if (pPreferred)
 946             IMemAllocator_Release(pPreferred);
 947     }
 948
 949     TRACE("-- %x\n", hr);
 950     return hr;
 951 }
 952
 953 /* we could improve the Request/WaitForNext mechanism by allowing out of order samples.
 954  * however, this would be quite complicated to do and may be a bit error prone */
 955 static HRESULT WINAPI FileAsyncReader_Request(IAsyncReader * iface, IMediaSample * pSample, DWORD_PTR dwUser)
 956 {
 957     REFERENCE_TIME Start;
 958     REFERENCE_TIME Stop;
 959     DATAREQUEST * pDataRq;
 960     BYTE * pBuffer;
 961     HRESULT hr = S_OK;
 962     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 963
 964     TRACE("(%p, %lx)\n", pSample, dwUser);
 965
 966     /* check flushing state */
 967     if (This->bFlushing)
 968         return VFW_E_WRONG_STATE;
 969
 970     if (!(pDataRq = CoTaskMemAlloc(sizeof(*pDataRq))))
 971         hr = E_OUTOFMEMORY;
 972
 973     /* get start and stop positions in bytes */
 974     if (SUCCEEDED(hr))
 975         hr = IMediaSample_GetTime(pSample, &Start, &Stop);
 976
 977     if (SUCCEEDED(hr))
 978         hr = IMediaSample_GetPointer(pSample, &pBuffer);
 979
 980     if (SUCCEEDED(hr))
 981     {
 982         DWORD dwLength = (DWORD) BYTES_FROM_MEDIATIME(Stop - Start);
 983
 984         pDataRq->ovl.u.s.Offset = (DWORD) BYTES_FROM_MEDIATIME(Start);
 985         pDataRq->ovl.u.s.OffsetHigh = (DWORD)(BYTES_FROM_MEDIATIME(Start) >> (sizeof(DWORD) * 8));
 986         pDataRq->ovl.hEvent = This->hEvent;
 987         pDataRq->dwUserData = dwUser;
 988         pDataRq->pNext = NULL;
 989         /* we violate traditional COM rules here by maintaining
 990          * a reference to the sample, but not calling AddRef, but
 991          * that's what MSDN says to do */
 992         pDataRq->pSample = pSample;
 993
 994         EnterCriticalSection(&This->csList);
 995         {
 996             if (This->pHead)
 997                 /* adds data request to end of list */
 998                 queue(This->pHead, pDataRq);
 999             else
1000                 This->pHead = pDataRq;
1001         }
1002         LeaveCriticalSection(&This->csList);
1003
1004         /* this is definitely not how it is implemented on Win9x
1005          * as they do not support async reads on files, but it is
1006          * sooo much easier to use this than messing around with threads!
1007          */
1008         if (!ReadFile(This->hFile, pBuffer, dwLength, NULL, &pDataRq->ovl))
1009             hr = HRESULT_FROM_WIN32(GetLastError());
1010
1011         /* ERROR_IO_PENDING is not actually an error since this is what we want! */
1012         if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1013             hr = S_OK;
1014     }
1015
1016     if (FAILED(hr) && pDataRq)
1017     {
1018         EnterCriticalSection(&This->csList);
1019         {
1020             DATAREQUEST * pCurrent;
1021             for (pCurrent = This->pHead; pCurrent && pCurrent->pNext; pCurrent = pCurrent->pNext)
1022                 if (pCurrent->pNext == pDataRq)
1023                 {
1024                     pCurrent->pNext = pDataRq->pNext;
1025                     break;
1026                 }
1027         }
1028         LeaveCriticalSection(&This->csList);
1029         CoTaskMemFree(pDataRq);
1030     }
1031
1032     TRACE("-- %x\n", hr);
1033     return hr;
1034 }
1035
1036 static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dwTimeout, IMediaSample ** ppSample, DWORD_PTR * pdwUser)
1037 {
1038     HRESULT hr = S_OK;
1039     DATAREQUEST * pDataRq = NULL;
1040     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1041
1042     TRACE("(%u, %p, %p)\n", dwTimeout, ppSample, pdwUser);
1043
1044     /* FIXME: we could do with improving this by waiting for an array of event handles
1045      * and then determining which one finished and removing that from the list, otherwise
1046      * we will end up waiting for longer than we should do, if a later request finishes
1047      * before an earlier one */
1048
1049     *ppSample = NULL;
1050     *pdwUser = 0;
1051
1052     /* we return immediately if flushing */
1053     if (This->bFlushing)
1054         hr = VFW_E_WRONG_STATE;
1055
1056     if (SUCCEEDED(hr))
1057     {
1058         /* wait for the read to finish or timeout */
1059         if (WaitForSingleObject(This->hEvent, dwTimeout) == WAIT_TIMEOUT)
1060             hr = VFW_E_TIMEOUT;
1061     }
1062     if (SUCCEEDED(hr))
1063     {
1064         EnterCriticalSection(&This->csList);
1065         {
1066             pDataRq = This->pHead;
1067             if (pDataRq == NULL)
1068                 hr = E_FAIL;
1069             else
1070                 This->pHead = pDataRq->pNext;
1071         }
1072         LeaveCriticalSection(&This->csList);
1073     }
1074
1075     if (SUCCEEDED(hr))
1076     {
1077         DWORD dwBytes;
1078         /* get any errors */
1079         if (!GetOverlappedResult(This->hFile, &pDataRq->ovl, &dwBytes, FALSE))
1080             hr = HRESULT_FROM_WIN32(GetLastError());
1081     }
1082
1083     if (SUCCEEDED(hr))
1084     {
1085         *ppSample = pDataRq->pSample;
1086         *pdwUser = pDataRq->dwUserData;
1087     }
1088
1089     /* no need to close event handle since we will close it when the pin is destroyed */
1090     CoTaskMemFree(pDataRq);
1091
1092     TRACE("-- %x\n", hr);
1093     return hr;
1094 }
1095
1096 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer);
1097
1098 static HRESULT WINAPI FileAsyncReader_SyncReadAligned(IAsyncReader * iface, IMediaSample * pSample)
1099 {
1100     BYTE * pBuffer;
1101     REFERENCE_TIME tStart;
1102     REFERENCE_TIME tStop;
1103     HRESULT hr;
1104
1105     TRACE("(%p)\n", pSample);
1106
1107     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
1108
1109     if (SUCCEEDED(hr))
1110         hr = IMediaSample_GetPointer(pSample, &pBuffer);
1111
1112     if (SUCCEEDED(hr))
1113         hr = FileAsyncReader_SyncRead(iface,
1114             BYTES_FROM_MEDIATIME(tStart),
1115             (LONG) BYTES_FROM_MEDIATIME(tStop - tStart),
1116             pBuffer);
1117
1118     TRACE("-- %x\n", hr);
1119     return hr;
1120 }
1121
1122 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer)
1123 {
1124     OVERLAPPED ovl;
1125     HRESULT hr = S_OK;
1126     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1127
1128     TRACE("(%x%08x, %d, %p)\n", (ULONG)(llPosition >> 32), (ULONG)llPosition, lLength, pBuffer);
1129
1130     ZeroMemory(&ovl, sizeof(ovl));
1131
1132     ovl.hEvent = CreateEventW(NULL, 0, 0, NULL);
1133     /* NOTE: llPosition is the actual byte position to start reading from */
1134     ovl.u.s.Offset = (DWORD) llPosition;
1135     ovl.u.s.OffsetHigh = (DWORD) (llPosition >> (sizeof(DWORD) * 8));
1136
1137     if (!ReadFile(This->hFile, pBuffer, lLength, NULL, &ovl))
1138         hr = HRESULT_FROM_WIN32(GetLastError());
1139
1140     if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1141         hr = S_OK;
1142
1143     if (SUCCEEDED(hr))
1144     {
1145         DWORD dwBytesRead;
1146
1147         if (!GetOverlappedResult(This->hFile, &ovl, &dwBytesRead, TRUE))
1148             hr = HRESULT_FROM_WIN32(GetLastError());
1149     }
1150
1151     CloseHandle(ovl.hEvent);
1152
1153     TRACE("-- %x\n", hr);
1154     return hr;
1155 }
1156
1157 static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader * iface, LONGLONG * pTotal, LONGLONG * pAvailable)
1158 {
1159     DWORD dwSizeLow;
1160     DWORD dwSizeHigh;
1161     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1162
1163     TRACE("(%p, %p)\n", pTotal, pAvailable);
1164
1165     if (((dwSizeLow = GetFileSize(This->hFile, &dwSizeHigh)) == -1) &&
1166         (GetLastError() != NO_ERROR))
1167         return HRESULT_FROM_WIN32(GetLastError());
1168
1169     *pTotal = (LONGLONG)dwSizeLow | (LONGLONG)dwSizeHigh << (sizeof(DWORD) * 8);
1170
1171     *pAvailable = *pTotal;
1172
1173     return S_OK;
1174 }
1175
1176 static HRESULT WINAPI FileAsyncReader_BeginFlush(IAsyncReader * iface)
1177 {
1178     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1179
1180     TRACE("()\n");
1181
1182     This->bFlushing = TRUE;
1183     CancelIo(This->hFile);
1184     SetEvent(This->hEvent);
1185
1186     /* FIXME: free list */
1187
1188     return S_OK;
1189 }
1190
1191 static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
1192 {
1193     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1194
1195     TRACE("()\n");
1196
1197     This->bFlushing = FALSE;
1198
1199     return S_OK;
1200 }
1201
1202 static const IAsyncReaderVtbl FileAsyncReader_Vtbl =
1203 {
1204     FileAsyncReader_QueryInterface,
1205     FileAsyncReader_AddRef,
1206     FileAsyncReader_Release,
1207     FileAsyncReader_RequestAllocator,
1208     FileAsyncReader_Request,
1209     FileAsyncReader_WaitForNext,
1210     FileAsyncReader_SyncReadAligned,
1211     FileAsyncReader_SyncRead,
1212     FileAsyncReader_Length,
1213     FileAsyncReader_BeginFlush,
1214     FileAsyncReader_EndFlush,
1215 };