git.oblomov.eu Git - wine/blob - 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 "shlwapi.h"
  34 #include <assert.h>
  35
  36 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  37
  38 static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 };
  39
  40 typedef struct AsyncReader
  41 {
  42     const IBaseFilterVtbl * lpVtbl;
  43     const IFileSourceFilterVtbl * lpVtblFSF;
  44
  45     LONG refCount;
  46     FILTER_INFO filterInfo;
  47     FILTER_STATE state;
  48     CRITICAL_SECTION csFilter;
  49     DWORD lastpinchange;
  50
  51     IPin * pOutputPin;
  52     LPOLESTR pszFileName;
  53     AM_MEDIA_TYPE * pmt;
  54 } AsyncReader;
  55
  56 static const IBaseFilterVtbl AsyncReader_Vtbl;
  57 static const IFileSourceFilterVtbl FileSource_Vtbl;
  58 static const IAsyncReaderVtbl FileAsyncReader_Vtbl;
  59
  60 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);
  61
  62 static inline AsyncReader *impl_from_IFileSourceFilter( IFileSourceFilter *iface )
  63 {
  64     return (AsyncReader *)((char*)iface - FIELD_OFFSET(AsyncReader, lpVtblFSF));
  65 }
  66
  67 static WCHAR const mediatype_name[11] = {
  68     'M', 'e', 'd', 'i', 'a', ' ', 'T', 'y', 'p', 'e', 0 };
  69 static WCHAR const subtype_name[8] = {
  70     'S', 'u', 'b', 't', 'y', 'p', 'e', 0 };
  71
  72 static HRESULT process_extensions(HKEY hkeyExtensions, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
  73 {
  74     WCHAR *extension;
  75     LONG l;
  76     HKEY hsub;
  77     WCHAR keying[39];
  78     DWORD size;
  79
  80     if (!pszFileName)
  81         return E_POINTER;
  82
  83     /* Get the part of the name that matters */
  84     extension = PathFindExtensionW(pszFileName);
  85     if (*extension != '.')
  86         return E_FAIL;
  87
  88     l = RegOpenKeyExW(hkeyExtensions, extension, 0, KEY_READ, &hsub);
  89     if (l)
  90         return E_FAIL;
  91
  92     size = sizeof(keying);
  93     l = RegQueryValueExW(hsub, mediatype_name, NULL, NULL, (LPBYTE)keying, &size);
  94     if (!l)
  95         CLSIDFromString(keying, majorType);
  96
  97     size = sizeof(keying);
  98     if (!l)
  99         l = RegQueryValueExW(hsub, subtype_name, NULL, NULL, (LPBYTE)keying, &size);
 100
 101     if (!l)
 102         CLSIDFromString(keying, minorType);
 103
 104     RegCloseKey(hsub);
 105
 106     if (!l)
 107         return S_OK;
 108     return E_FAIL;
 109 }
 110
 111 static unsigned char byte_from_hex_char(WCHAR wHex)
 112 {
 113     switch (tolowerW(wHex))
 114     {
 115     case '0':
 116     case '1':
 117     case '2':
 118     case '3':
 119     case '4':
 120     case '5':
 121     case '6':
 122     case '7':
 123     case '8':
 124     case '9':
 125         return (wHex - '0') & 0xf;
 126     case 'a':
 127     case 'b':
 128     case 'c':
 129     case 'd':
 130     case 'e':
 131     case 'f':
 132         return (wHex - 'a' + 10) & 0xf;
 133     default:
 134         return 0;
 135     }
 136 }
 137
 138 static HRESULT process_pattern_string(LPCWSTR wszPatternString, IAsyncReader * pReader)
 139 {
 140     ULONG ulOffset;
 141     ULONG ulBytes;
 142     BYTE * pbMask;
 143     BYTE * pbValue;
 144     BYTE * pbFile;
 145     HRESULT hr = S_OK;
 146     ULONG strpos;
 147
 148     TRACE("\t\tPattern string: %s\n", debugstr_w(wszPatternString));
 149
 150     /* format: "offset, bytestocompare, mask, value" */
 151
 152     ulOffset = strtolW(wszPatternString, NULL, 10);
 153
 154     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 155         return E_INVALIDARG;
 156
 157     wszPatternString++; /* skip ',' */
 158
 159     ulBytes = strtolW(wszPatternString, NULL, 10);
 160
 161     pbMask = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 162     pbValue = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ulBytes);
 163     pbFile = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 164
 165     /* default mask is match everything */
 166     memset(pbMask, 0xFF, ulBytes);
 167
 168     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 169         hr = E_INVALIDARG;
 170
 171     wszPatternString++; /* skip ',' */
 172
 173     if (hr == S_OK)
 174     {
 175         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 176             ;
 177
 178         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 179         {
 180             if ((strpos % 2) == 1) /* odd numbered position */
 181                 pbMask[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 182             else
 183                 pbMask[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 184         }
 185
 186         if (!(wszPatternString = strchrW(wszPatternString, ',')))
 187             hr = E_INVALIDARG;
 188
 189         wszPatternString++; /* skip ',' */
 190     }
 191
 192     if (hr == S_OK)
 193     {
 194         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 195             ;
 196
 197         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 198         {
 199             if ((strpos % 2) == 1) /* odd numbered position */
 200                 pbValue[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 201             else
 202                 pbValue[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 203         }
 204     }
 205
 206     if (hr == S_OK)
 207         hr = IAsyncReader_SyncRead(pReader, ulOffset, ulBytes, pbFile);
 208
 209     if (hr == S_OK)
 210     {
 211         ULONG i;
 212         for (i = 0; i < ulBytes; i++)
 213             if ((pbFile[i] & pbMask[i]) != pbValue[i])
 214             {
 215                 hr = S_FALSE;
 216                 break;
 217             }
 218     }
 219
 220     HeapFree(GetProcessHeap(), 0, pbMask);
 221     HeapFree(GetProcessHeap(), 0, pbValue);
 222     HeapFree(GetProcessHeap(), 0, pbFile);
 223
 224     /* if we encountered no errors with this string, and there is a following tuple, then we
 225      * have to match that as well to succeed */
 226     if ((hr == S_OK) && (wszPatternString = strchrW(wszPatternString, ',')))
 227         return process_pattern_string(wszPatternString + 1, pReader);
 228     else
 229         return hr;
 230 }
 231
 232 static HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
 233 {
 234     HKEY hkeyMediaType = NULL;
 235     LONG lRet;
 236     HRESULT hr = S_OK;
 237     BOOL bFound = FALSE;
 238     static const WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
 239
 240     TRACE("(%p, %s, %p, %p)\n", pReader, debugstr_w(pszFileName), majorType, minorType);
 241
 242     *majorType = GUID_NULL;
 243     *minorType = GUID_NULL;
 244
 245     lRet = RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &hkeyMediaType);
 246     hr = HRESULT_FROM_WIN32(lRet);
 247
 248     if (SUCCEEDED(hr))
 249     {
 250         DWORD indexMajor;
 251
 252         for (indexMajor = 0; !bFound; indexMajor++)
 253         {
 254             HKEY hkeyMajor;
 255             WCHAR wszMajorKeyName[CHARS_IN_GUID];
 256             DWORD dwKeyNameLength = sizeof(wszMajorKeyName) / sizeof(wszMajorKeyName[0]);
 257             static const WCHAR wszExtensions[] = {'E','x','t','e','n','s','i','o','n','s',0};
 258
 259             if (RegEnumKeyExW(hkeyMediaType, indexMajor, wszMajorKeyName, &dwKeyNameLength, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 260                 break;
 261             if (RegOpenKeyExW(hkeyMediaType, wszMajorKeyName, 0, KEY_READ, &hkeyMajor) != ERROR_SUCCESS)
 262                 break;
 263             TRACE("%s\n", debugstr_w(wszMajorKeyName));
 264             if (!strcmpW(wszExtensions, wszMajorKeyName))
 265             {
 266                 if (process_extensions(hkeyMajor, pszFileName, majorType, minorType) == S_OK)
 267                     bFound = TRUE;
 268             }
 269             else
 270             {
 271                 DWORD indexMinor;
 272
 273                 for (indexMinor = 0; !bFound; indexMinor++)
 274                 {
 275                     HKEY hkeyMinor;
 276                     WCHAR wszMinorKeyName[CHARS_IN_GUID];
 277                     DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]);
 278                     DWORD maxValueLen;
 279                     DWORD indexValue;
 280
 281                     if (RegEnumKeyExW(hkeyMajor, indexMinor, wszMinorKeyName, &dwMinorKeyNameLen, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 282                         break;
 283
 284                     if (RegOpenKeyExW(hkeyMajor, wszMinorKeyName, 0, KEY_READ, &hkeyMinor) != ERROR_SUCCESS)
 285                         break;
 286
 287                     TRACE("\t%s\n", debugstr_w(wszMinorKeyName));
 288
 289                     if (RegQueryInfoKeyW(hkeyMinor, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &maxValueLen, NULL, NULL) != ERROR_SUCCESS)
 290                         break;
 291
 292                     for (indexValue = 0; !bFound; indexValue++)
 293                     {
 294                         DWORD dwType;
 295                         WCHAR wszValueName[14]; /* longest name we should encounter will be "Source Filter" */
 296                         LPWSTR wszPatternString = HeapAlloc(GetProcessHeap(), 0, maxValueLen);
 297                         DWORD dwValueNameLen = sizeof(wszValueName) / sizeof(wszValueName[0]); /* remember this is in chars */
 298                         DWORD dwDataLen = maxValueLen; /* remember this is in bytes */
 299                         static const WCHAR wszSourceFilter[] = {'S','o','u','r','c','e',' ','F','i','l','t','e','r',0};
 300                         LONG temp;
 301
 302                         if ((temp = RegEnumValueW(hkeyMinor, indexValue, wszValueName, &dwValueNameLen, NULL, &dwType, (LPBYTE)wszPatternString, &dwDataLen)) != ERROR_SUCCESS)
 303                         {
 304                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 305                             break;
 306                         }
 307
 308                         /* if it is not the source filter value */
 309                         if (strcmpW(wszValueName, wszSourceFilter))
 310                         {
 311                             if (process_pattern_string(wszPatternString, pReader) == S_OK)
 312                             {
 313                                 if (SUCCEEDED(CLSIDFromString(wszMajorKeyName, majorType)) &&
 314                                     SUCCEEDED(CLSIDFromString(wszMinorKeyName, minorType)))
 315                                     bFound = TRUE;
 316                             }
 317                         }
 318                         HeapFree(GetProcessHeap(), 0, wszPatternString);
 319                     }
 320                     CloseHandle(hkeyMinor);
 321                 }
 322             }
 323             CloseHandle(hkeyMajor);
 324         }
 325     }
 326     CloseHandle(hkeyMediaType);
 327
 328     if (SUCCEEDED(hr) && !bFound)
 329     {
 330         ERR("Media class not found\n");
 331         hr = E_FAIL;
 332     }
 333     else if (bFound)
 334         TRACE("Found file's class: major = %s, subtype = %s\n", qzdebugstr_guid(majorType), qzdebugstr_guid(minorType));
 335
 336     return hr;
 337 }
 338
 339 HRESULT AsyncReader_create(IUnknown * pUnkOuter, LPVOID * ppv)
 340 {
 341     AsyncReader *pAsyncRead;
 342
 343     if( pUnkOuter )
 344         return CLASS_E_NOAGGREGATION;
 345
 346     pAsyncRead = CoTaskMemAlloc(sizeof(AsyncReader));
 347
 348     if (!pAsyncRead)
 349         return E_OUTOFMEMORY;
 350
 351     pAsyncRead->lpVtbl = &AsyncReader_Vtbl;
 352     pAsyncRead->lpVtblFSF = &FileSource_Vtbl;
 353     pAsyncRead->refCount = 1;
 354     pAsyncRead->filterInfo.achName[0] = '\0';
 355     pAsyncRead->filterInfo.pGraph = NULL;
 356     pAsyncRead->pOutputPin = NULL;
 357     pAsyncRead->lastpinchange = GetTickCount();
 358
 359     InitializeCriticalSection(&pAsyncRead->csFilter);
 360     pAsyncRead->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": AsyncReader.csFilter");
 361
 362     pAsyncRead->pszFileName = NULL;
 363     pAsyncRead->pmt = NULL;
 364
 365     *ppv = (LPVOID)pAsyncRead;
 366
 367     TRACE("-- created at %p\n", pAsyncRead);
 368
 369     return S_OK;
 370 }
 371
 372 /** IUnknown methods **/
 373
 374 static HRESULT WINAPI AsyncReader_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 375 {
 376     AsyncReader *This = (AsyncReader *)iface;
 377
 378     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 379
 380     *ppv = NULL;
 381
 382     if (IsEqualIID(riid, &IID_IUnknown))
 383         *ppv = (LPVOID)This;
 384     else if (IsEqualIID(riid, &IID_IPersist))
 385         *ppv = (LPVOID)This;
 386     else if (IsEqualIID(riid, &IID_IMediaFilter))
 387         *ppv = (LPVOID)This;
 388     else if (IsEqualIID(riid, &IID_IBaseFilter))
 389         *ppv = (LPVOID)This;
 390     else if (IsEqualIID(riid, &IID_IFileSourceFilter))
 391         *ppv = (LPVOID)(&This->lpVtblFSF);
 392
 393     if (*ppv)
 394     {
 395         IUnknown_AddRef((IUnknown *)(*ppv));
 396         return S_OK;
 397     }
 398
 399     if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IMediaSeeking) && !IsEqualIID(riid, &IID_IVideoWindow))
 400         FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 401
 402     return E_NOINTERFACE;
 403 }
 404
 405 static ULONG WINAPI AsyncReader_AddRef(IBaseFilter * iface)
 406 {
 407     AsyncReader *This = (AsyncReader *)iface;
 408     ULONG refCount = InterlockedIncrement(&This->refCount);
 409
 410     TRACE("(%p)->() AddRef from %d\n", This, refCount - 1);
 411
 412     return refCount;
 413 }
 414
 415 static ULONG WINAPI AsyncReader_Release(IBaseFilter * iface)
 416 {
 417     AsyncReader *This = (AsyncReader *)iface;
 418     ULONG refCount = InterlockedDecrement(&This->refCount);
 419
 420     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 421
 422     if (!refCount)
 423     {
 424         if (This->pOutputPin)
 425         {
 426             IPin *pConnectedTo;
 427             if(SUCCEEDED(IPin_ConnectedTo(This->pOutputPin, &pConnectedTo)))
 428             {
 429                 IPin_Disconnect(pConnectedTo);
 430                 IPin_Release(pConnectedTo);
 431             }
 432             IPin_Disconnect(This->pOutputPin);
 433             IPin_Release(This->pOutputPin);
 434         }
 435         This->csFilter.DebugInfo->Spare[0] = 0;
 436         DeleteCriticalSection(&This->csFilter);
 437         This->lpVtbl = NULL;
 438         CoTaskMemFree(This->pszFileName);
 439         if (This->pmt)
 440             FreeMediaType(This->pmt);
 441         CoTaskMemFree(This);
 442         return 0;
 443     }
 444     else
 445         return refCount;
 446 }
 447
 448 /** IPersist methods **/
 449
 450 static HRESULT WINAPI AsyncReader_GetClassID(IBaseFilter * iface, CLSID * pClsid)
 451 {
 452     TRACE("(%p)\n", pClsid);
 453
 454     *pClsid = CLSID_AsyncReader;
 455
 456     return S_OK;
 457 }
 458
 459 /** IMediaFilter methods **/
 460
 461 static HRESULT WINAPI AsyncReader_Stop(IBaseFilter * iface)
 462 {
 463     AsyncReader *This = (AsyncReader *)iface;
 464
 465     TRACE("()\n");
 466
 467     This->state = State_Stopped;
 468
 469     return S_OK;
 470 }
 471
 472 static HRESULT WINAPI AsyncReader_Pause(IBaseFilter * iface)
 473 {
 474     AsyncReader *This = (AsyncReader *)iface;
 475
 476     TRACE("()\n");
 477
 478     This->state = State_Paused;
 479
 480     return S_OK;
 481 }
 482
 483 static HRESULT WINAPI AsyncReader_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 484 {
 485     AsyncReader *This = (AsyncReader *)iface;
 486
 487     TRACE("(%x%08x)\n", (ULONG)(tStart >> 32), (ULONG)tStart);
 488
 489     This->state = State_Running;
 490
 491     return S_OK;
 492 }
 493
 494 static HRESULT WINAPI AsyncReader_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState)
 495 {
 496     AsyncReader *This = (AsyncReader *)iface;
 497
 498     TRACE("(%u, %p)\n", dwMilliSecsTimeout, pState);
 499
 500     *pState = This->state;
 501
 502     return S_OK;
 503 }
 504
 505 static HRESULT WINAPI AsyncReader_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
 506 {
 507 /*    AsyncReader *This = (AsyncReader *)iface;*/
 508
 509     TRACE("(%p)\n", pClock);
 510
 511     return S_OK;
 512 }
 513
 514 static HRESULT WINAPI AsyncReader_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
 515 {
 516 /*    AsyncReader *This = (AsyncReader *)iface;*/
 517
 518     TRACE("(%p)\n", ppClock);
 519
 520     return S_OK;
 521 }
 522
 523 /** IBaseFilter methods **/
 524
 525 static HRESULT AsyncReader_GetPin(IBaseFilter *iface, ULONG pos, IPin **pin, DWORD *lastsynctick)
 526 {
 527     AsyncReader *This = (AsyncReader *)iface;
 528
 529     /* Our pins are almost static, not changing so setting static tick count is ok */
 530     *lastsynctick = This->lastpinchange;
 531
 532     if (pos >= 1)
 533         return S_FALSE;
 534
 535     *pin = (IPin *)This->pOutputPin;
 536     IPin_AddRef(*pin);
 537     return S_OK;
 538 }
 539
 540 static HRESULT WINAPI AsyncReader_EnumPins(IBaseFilter * iface, IEnumPins **ppEnum)
 541 {
 542     AsyncReader *This = (AsyncReader *)iface;
 543
 544     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 545
 546     return IEnumPinsImpl_Construct(ppEnum, AsyncReader_GetPin, iface);
 547 }
 548
 549 static HRESULT WINAPI AsyncReader_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 550 {
 551     FIXME("(%s, %p)\n", debugstr_w(Id), ppPin);
 552
 553     return E_NOTIMPL;
 554 }
 555
 556 static HRESULT WINAPI AsyncReader_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
 557 {
 558     AsyncReader *This = (AsyncReader *)iface;
 559
 560     TRACE("(%p)\n", pInfo);
 561
 562     strcpyW(pInfo->achName, This->filterInfo.achName);
 563     pInfo->pGraph = This->filterInfo.pGraph;
 564
 565     if (pInfo->pGraph)
 566         IFilterGraph_AddRef(pInfo->pGraph);
 567
 568     return S_OK;
 569 }
 570
 571 static HRESULT WINAPI AsyncReader_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName)
 572 {
 573     AsyncReader *This = (AsyncReader *)iface;
 574
 575     TRACE("(%p, %s)\n", pGraph, debugstr_w(pName));
 576
 577     if (pName)
 578         strcpyW(This->filterInfo.achName, pName);
 579     else
 580         *This->filterInfo.achName = 0;
 581     This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
 582
 583     return S_OK;
 584 }
 585
 586 static HRESULT WINAPI AsyncReader_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
 587 {
 588     FIXME("(%p)\n", pVendorInfo);
 589
 590     return E_NOTIMPL;
 591 }
 592
 593 static const IBaseFilterVtbl AsyncReader_Vtbl =
 594 {
 595     AsyncReader_QueryInterface,
 596     AsyncReader_AddRef,
 597     AsyncReader_Release,
 598     AsyncReader_GetClassID,
 599     AsyncReader_Stop,
 600     AsyncReader_Pause,
 601     AsyncReader_Run,
 602     AsyncReader_GetState,
 603     AsyncReader_SetSyncSource,
 604     AsyncReader_GetSyncSource,
 605     AsyncReader_EnumPins,
 606     AsyncReader_FindPin,
 607     AsyncReader_QueryFilterInfo,
 608     AsyncReader_JoinFilterGraph,
 609     AsyncReader_QueryVendorInfo
 610 };
 611
 612 static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
 613 {
 614     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 615
 616     return IBaseFilter_QueryInterface((IFileSourceFilter*)&This->lpVtbl, riid, ppv);
 617 }
 618
 619 static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
 620 {
 621     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 622
 623     return IBaseFilter_AddRef((IFileSourceFilter*)&This->lpVtbl);
 624 }
 625
 626 static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
 627 {
 628     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 629
 630     return IBaseFilter_Release((IFileSourceFilter*)&This->lpVtbl);
 631 }
 632
 633 static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
 634 {
 635     HRESULT hr;
 636     HANDLE hFile;
 637     IAsyncReader * pReader = NULL;
 638     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 639
 640     TRACE("(%s, %p)\n", debugstr_w(pszFileName), pmt);
 641
 642     /* open file */
 643     /* FIXME: check the sharing values that native uses */
 644     hFile = CreateFileW(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
 645
 646     if (hFile == INVALID_HANDLE_VALUE)
 647     {
 648         return HRESULT_FROM_WIN32(GetLastError());
 649     }
 650
 651     /* create pin */
 652     hr = FileAsyncReader_Construct(hFile, (IBaseFilter *)&This->lpVtbl, &This->csFilter, &This->pOutputPin);
 653     This->lastpinchange = GetTickCount();
 654
 655     if (SUCCEEDED(hr))
 656         hr = IPin_QueryInterface(This->pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader);
 657
 658     /* store file name & media type */
 659     if (SUCCEEDED(hr))
 660     {
 661         CoTaskMemFree(This->pszFileName);
 662         if (This->pmt)
 663             FreeMediaType(This->pmt);
 664
 665         This->pszFileName = CoTaskMemAlloc((strlenW(pszFileName) + 1) * sizeof(WCHAR));
 666         strcpyW(This->pszFileName, pszFileName);
 667
 668         This->pmt = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
 669         if (!pmt)
 670         {
 671             This->pmt->bFixedSizeSamples = TRUE;
 672             This->pmt->bTemporalCompression = FALSE;
 673             This->pmt->cbFormat = 0;
 674             This->pmt->pbFormat = NULL;
 675             This->pmt->pUnk = NULL;
 676             This->pmt->lSampleSize = 0;
 677             This->pmt->formattype = FORMAT_None;
 678             hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype);
 679             if (FAILED(hr))
 680             {
 681                 CoTaskMemFree(This->pmt);
 682                 This->pmt = NULL;
 683             }
 684         }
 685         else
 686             CopyMediaType(This->pmt, pmt);
 687     }
 688
 689     if (pReader)
 690         IAsyncReader_Release(pReader);
 691
 692     if (FAILED(hr))
 693     {
 694         if (This->pOutputPin)
 695         {
 696             IPin_Release(This->pOutputPin);
 697             This->pOutputPin = NULL;
 698         }
 699
 700         CoTaskMemFree(This->pszFileName);
 701         if (This->pmt)
 702             FreeMediaType(This->pmt);
 703         This->pszFileName = NULL;
 704         This->pmt = NULL;
 705
 706         CloseHandle(hFile);
 707     }
 708
 709     /* FIXME: check return codes */
 710     return hr;
 711 }
 712
 713 static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter * iface, LPOLESTR * ppszFileName, AM_MEDIA_TYPE * pmt)
 714 {
 715     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 716
 717     TRACE("(%p, %p)\n", ppszFileName, pmt);
 718
 719     if (!ppszFileName)
 720         return E_POINTER;
 721
 722     /* copy file name & media type if available, otherwise clear the outputs */
 723     if (This->pszFileName)
 724     {
 725         *ppszFileName = CoTaskMemAlloc((strlenW(This->pszFileName) + 1) * sizeof(WCHAR));
 726         strcpyW(*ppszFileName, This->pszFileName);
 727     }
 728     else
 729         *ppszFileName = NULL;
 730
 731     if (pmt)
 732     {
 733         if (This->pmt)
 734             CopyMediaType(pmt, This->pmt);
 735         else
 736             ZeroMemory(pmt, sizeof(*pmt));
 737     }
 738
 739     return S_OK;
 740 }
 741
 742 static const IFileSourceFilterVtbl FileSource_Vtbl =
 743 {
 744     FileSource_QueryInterface,
 745     FileSource_AddRef,
 746     FileSource_Release,
 747     FileSource_Load,
 748     FileSource_GetCurFile
 749 };
 750
 751
 752 /* the dwUserData passed back to user */
 753 typedef struct DATAREQUEST
 754 {
 755     IMediaSample * pSample; /* sample passed to us by user */
 756     DWORD_PTR dwUserData; /* user data passed to us */
 757     OVERLAPPED ovl; /* our overlapped structure */
 758 } DATAREQUEST;
 759
 760 typedef struct FileAsyncReader
 761 {
 762     OutputPin pin;
 763     const struct IAsyncReaderVtbl * lpVtblAR;
 764
 765     HANDLE hFile;
 766     BOOL bFlushing;
 767     /* Why would you need more? Every sample has its own handle */
 768     LONG queued_number;
 769     LONG samples;
 770     CRITICAL_SECTION csList; /* critical section to prevent concurrency issues */
 771     DATAREQUEST *sample_list;
 772
 773     /* Have a handle for every sample, and then one more as flushing handle */
 774     HANDLE *handle_list;
 775 } FileAsyncReader;
 776
 777 static inline FileAsyncReader *impl_from_IAsyncReader( IAsyncReader *iface )
 778 {
 779     return (FileAsyncReader *)((char*)iface - FIELD_OFFSET(FileAsyncReader, lpVtblAR));
 780 }
 781
 782 static HRESULT AcceptProcAFR(LPVOID iface, const AM_MEDIA_TYPE *pmt)
 783 {
 784     AsyncReader *This = (AsyncReader *)iface;
 785
 786     FIXME("(%p, %p)\n", iface, pmt);
 787
 788     if (IsEqualGUID(&pmt->majortype, &This->pmt->majortype) &&
 789         IsEqualGUID(&pmt->subtype, &This->pmt->subtype) &&
 790         IsEqualGUID(&pmt->formattype, &FORMAT_None))
 791         return S_OK;
 792
 793     return S_FALSE;
 794 }
 795
 796 /* overridden pin functions */
 797
 798 static HRESULT WINAPI FileAsyncReaderPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 799 {
 800     FileAsyncReader *This = (FileAsyncReader *)iface;
 801     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 802
 803     *ppv = NULL;
 804
 805     if (IsEqualIID(riid, &IID_IUnknown))
 806         *ppv = (LPVOID)This;
 807     else if (IsEqualIID(riid, &IID_IPin))
 808         *ppv = (LPVOID)This;
 809     else if (IsEqualIID(riid, &IID_IAsyncReader))
 810         *ppv = (LPVOID)&This->lpVtblAR;
 811
 812     if (*ppv)
 813     {
 814         IUnknown_AddRef((IUnknown *)(*ppv));
 815         return S_OK;
 816     }
 817
 818     if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IMediaSeeking))
 819         FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 820
 821     return E_NOINTERFACE;
 822 }
 823
 824 static ULONG WINAPI FileAsyncReaderPin_Release(IPin * iface)
 825 {
 826     FileAsyncReader *This = (FileAsyncReader *)iface;
 827     ULONG refCount = InterlockedDecrement(&This->pin.pin.refCount);
 828     int x;
 829
 830     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 831
 832     if (!refCount)
 833     {
 834         CoTaskMemFree(This->sample_list);
 835         if (This->handle_list)
 836         {
 837             for (x = 0; x <= This->samples; ++x)
 838                 CloseHandle(This->handle_list[x]);
 839             CoTaskMemFree(This->handle_list);
 840         }
 841         CloseHandle(This->hFile);
 842         This->csList.DebugInfo->Spare[0] = 0;
 843         DeleteCriticalSection(&This->csList);
 844         CoTaskMemFree(This);
 845         return 0;
 846     }
 847     return refCount;
 848 }
 849
 850 static HRESULT WINAPI FileAsyncReaderPin_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 851 {
 852     ENUMMEDIADETAILS emd;
 853     FileAsyncReader *This = (FileAsyncReader *)iface;
 854
 855     TRACE("(%p)\n", ppEnum);
 856
 857     emd.cMediaTypes = 1;
 858     emd.pMediaTypes = ((AsyncReader *)This->pin.pin.pinInfo.pFilter)->pmt;
 859
 860     return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
 861 }
 862
 863 static const IPinVtbl FileAsyncReaderPin_Vtbl =
 864 {
 865     FileAsyncReaderPin_QueryInterface,
 866     IPinImpl_AddRef,
 867     FileAsyncReaderPin_Release,
 868     OutputPin_Connect,
 869     OutputPin_ReceiveConnection,
 870     IPinImpl_Disconnect,
 871     IPinImpl_ConnectedTo,
 872     IPinImpl_ConnectionMediaType,
 873     IPinImpl_QueryPinInfo,
 874     IPinImpl_QueryDirection,
 875     IPinImpl_QueryId,
 876     IPinImpl_QueryAccept,
 877     FileAsyncReaderPin_EnumMediaTypes,
 878     IPinImpl_QueryInternalConnections,
 879     OutputPin_EndOfStream,
 880     OutputPin_BeginFlush,
 881     OutputPin_EndFlush,
 882     OutputPin_NewSegment
 883 };
 884
 885 /* Function called as a helper to IPin_Connect */
 886 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 887 /* this differs from standard OutputPin_ConnectSpecific only in that it
 888  * doesn't need the IMemInputPin interface on the receiving pin */
 889 static HRESULT FileAsyncReaderPin_ConnectSpecific(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 890 {
 891     OutputPin *This = (OutputPin *)iface;
 892     HRESULT hr;
 893
 894     TRACE("(%p, %p)\n", pReceivePin, pmt);
 895     dump_AM_MEDIA_TYPE(pmt);
 896
 897     /* FIXME: call queryacceptproc */
 898
 899     This->pin.pConnectedTo = pReceivePin;
 900     IPin_AddRef(pReceivePin);
 901     CopyMediaType(&This->pin.mtCurrent, pmt);
 902
 903     hr = IPin_ReceiveConnection(pReceivePin, iface, pmt);
 904
 905     if (FAILED(hr))
 906     {
 907         IPin_Release(This->pin.pConnectedTo);
 908         This->pin.pConnectedTo = NULL;
 909         FreeMediaType(&This->pin.mtCurrent);
 910     }
 911
 912     TRACE(" -- %x\n", hr);
 913     return hr;
 914 }
 915
 916 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 917 {
 918     PIN_INFO piOutput;
 919     HRESULT hr;
 920
 921     *ppPin = NULL;
 922     piOutput.dir = PINDIR_OUTPUT;
 923     piOutput.pFilter = pBaseFilter;
 924     strcpyW(piOutput.achName, wszOutputPinName);
 925     hr = OutputPin_Construct(&FileAsyncReaderPin_Vtbl, sizeof(FileAsyncReader), &piOutput, NULL, pBaseFilter, AcceptProcAFR, pCritSec, ppPin);
 926
 927     if (SUCCEEDED(hr))
 928     {
 929         FileAsyncReader *pPinImpl =  (FileAsyncReader *)*ppPin;
 930         pPinImpl->lpVtblAR = &FileAsyncReader_Vtbl;
 931         pPinImpl->hFile = hFile;
 932         pPinImpl->bFlushing = FALSE;
 933         pPinImpl->sample_list = NULL;
 934         pPinImpl->handle_list = NULL;
 935         pPinImpl->queued_number = 0;
 936         pPinImpl->pin.pConnectSpecific = FileAsyncReaderPin_ConnectSpecific;
 937         InitializeCriticalSection(&pPinImpl->csList);
 938         pPinImpl->csList.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FileAsyncReader.csList");
 939     }
 940     return hr;
 941 }
 942
 943 /* IAsyncReader */
 944
 945 static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader * iface, REFIID riid, LPVOID * ppv)
 946 {
 947     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 948
 949     return IPin_QueryInterface((IPin *)This, riid, ppv);
 950 }
 951
 952 static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
 953 {
 954     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 955
 956     return IPin_AddRef((IPin *)This);
 957 }
 958
 959 static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
 960 {
 961     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 962
 963     return IPin_Release((IPin *)This);
 964 }
 965
 966 #define DEF_ALIGNMENT 1
 967
 968 static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader * iface, IMemAllocator * pPreferred, ALLOCATOR_PROPERTIES * pProps, IMemAllocator ** ppActual)
 969 {
 970     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 971
 972     HRESULT hr = S_OK;
 973
 974     TRACE("(%p, %p, %p)\n", pPreferred, pProps, ppActual);
 975
 976     if (!pProps->cbAlign || (pProps->cbAlign % DEF_ALIGNMENT) != 0)
 977         pProps->cbAlign = DEF_ALIGNMENT;
 978
 979     if (pPreferred)
 980     {
 981         hr = IMemAllocator_SetProperties(pPreferred, pProps, pProps);
 982         /* FIXME: check we are still aligned */
 983         if (SUCCEEDED(hr))
 984         {
 985             IMemAllocator_AddRef(pPreferred);
 986             *ppActual = pPreferred;
 987             TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
 988             goto done;
 989         }
 990     }
 991
 992     pPreferred = NULL;
 993
 994     hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC, &IID_IMemAllocator, (LPVOID *)&pPreferred);
 995
 996     if (SUCCEEDED(hr))
 997     {
 998         hr = IMemAllocator_SetProperties(pPreferred, pProps, pProps);
 999         /* FIXME: check we are still aligned */
1000         if (SUCCEEDED(hr))
1001         {
1002             *ppActual = pPreferred;
1003             TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
1004         }
1005     }
1006
1007 done:
1008     if (SUCCEEDED(hr))
1009     {
1010         CoTaskMemFree(This->sample_list);
1011         if (This->handle_list)
1012         {
1013             int x;
1014             for (x = 0; x <= This->samples; ++x)
1015                 CloseHandle(This->handle_list[x]);
1016             CoTaskMemFree(This->handle_list);
1017         }
1018
1019         This->samples = pProps->cBuffers;
1020         TRACE("Samples: %u\n", This->samples);
1021         This->sample_list = CoTaskMemAlloc(sizeof(This->sample_list[0]) * pProps->cBuffers);
1022         This->handle_list = CoTaskMemAlloc(sizeof(HANDLE) * (pProps->cBuffers + 1));
1023
1024         if (This->sample_list && This->handle_list)
1025         {
1026             int x;
1027             ZeroMemory(This->sample_list, sizeof(This->sample_list[0]) * pProps->cBuffers);
1028             for (x = 0; x < This->samples; ++x)
1029             {
1030                 This->sample_list[x].ovl.hEvent = This->handle_list[x] = CreateEventW(NULL, 0, 0, NULL);
1031             }
1032             This->handle_list[This->samples] = CreateEventW(NULL, 1, 0, NULL);
1033             This->pin.allocProps = *pProps;
1034         }
1035         else
1036         {
1037             hr = E_OUTOFMEMORY;
1038             CoTaskMemFree(This->sample_list);
1039             CoTaskMemFree(This->handle_list);
1040             This->samples = 0;
1041             This->sample_list = NULL;
1042             This->handle_list = NULL;
1043         }
1044     }
1045
1046     if (FAILED(hr))
1047     {
1048         *ppActual = NULL;
1049         if (pPreferred)
1050             IMemAllocator_Release(pPreferred);
1051     }
1052
1053     TRACE("-- %x\n", hr);
1054     return hr;
1055 }
1056
1057 /* we could improve the Request/WaitForNext mechanism by allowing out of order samples.
1058  * however, this would be quite complicated to do and may be a bit error prone */
1059 static HRESULT WINAPI FileAsyncReader_Request(IAsyncReader * iface, IMediaSample * pSample, DWORD_PTR dwUser)
1060 {
1061     HRESULT hr = S_OK;
1062     REFERENCE_TIME Start;
1063     REFERENCE_TIME Stop;
1064     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1065     LPBYTE pBuffer = NULL;
1066     DWORD wait;
1067
1068     TRACE("(%p, %lx)\n", pSample, dwUser);
1069
1070     if (!pSample)
1071         return E_POINTER;
1072
1073     /* get start and stop positions in bytes */
1074     if (SUCCEEDED(hr))
1075         hr = IMediaSample_GetTime(pSample, &Start, &Stop);
1076
1077     if (SUCCEEDED(hr))
1078         hr = IMediaSample_GetPointer(pSample, &pBuffer);
1079
1080     EnterCriticalSection(&This->csList);
1081     if (This->bFlushing)
1082     {
1083         LeaveCriticalSection(&This->csList);
1084         return VFW_E_WRONG_STATE;
1085     }
1086
1087     wait = WaitForMultipleObjectsEx(This->samples, This->handle_list, FALSE, 0, FALSE);
1088     if (wait < This->samples - 1)
1089         SetEvent(This->handle_list[wait]);
1090     else
1091         wait = This->samples;
1092
1093     if (SUCCEEDED(hr))
1094     {
1095         DWORD dwLength = (DWORD) BYTES_FROM_MEDIATIME(Stop - Start);
1096         DATAREQUEST *pDataRq;
1097         int x;
1098
1099         /* Try to insert above the waiting sample if possible */
1100         for (x = wait + 1; x < This->samples; ++x)
1101         {
1102             if (!This->sample_list[x].pSample)
1103                 break;
1104         }
1105
1106         if (x >= This->samples)
1107             for (x = 0; x < This->samples; ++x)
1108             {
1109                 if (!This->sample_list[x].pSample)
1110                     break;
1111             }
1112
1113         assert(x < This->samples);
1114         InterlockedIncrement(&This->queued_number);
1115
1116         pDataRq = This->sample_list + x;
1117
1118         pDataRq->ovl.u.s.Offset = (DWORD) BYTES_FROM_MEDIATIME(Start);
1119         pDataRq->ovl.u.s.OffsetHigh = (DWORD)(BYTES_FROM_MEDIATIME(Start) >> (sizeof(DWORD) * 8));
1120         pDataRq->dwUserData = dwUser;
1121
1122         /* we violate traditional COM rules here by maintaining
1123          * a reference to the sample, but not calling AddRef, but
1124          * that's what MSDN says to do */
1125         pDataRq->pSample = pSample;
1126
1127         /* this is definitely not how it is implemented on Win9x
1128          * as they do not support async reads on files, but it is
1129          * sooo much easier to use this than messing around with threads!
1130          */
1131         if (!ReadFile(This->hFile, pBuffer, dwLength, NULL, &pDataRq->ovl))
1132             hr = HRESULT_FROM_WIN32(GetLastError());
1133
1134         /* ERROR_IO_PENDING is not actually an error since this is what we want! */
1135         if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1136             hr = S_OK;
1137     }
1138
1139     LeaveCriticalSection(&This->csList);
1140
1141     TRACE("-- %x\n", hr);
1142     return hr;
1143 }
1144
1145 static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dwTimeout, IMediaSample ** ppSample, DWORD_PTR * pdwUser)
1146 {
1147     HRESULT hr = S_OK;
1148     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1149     DWORD buffer = ~0;
1150
1151     TRACE("(%u, %p, %p)\n", dwTimeout, ppSample, pdwUser);
1152
1153     *ppSample = NULL;
1154     *pdwUser = 0;
1155
1156     if (!This->bFlushing)
1157     {
1158         if (!This->queued_number)
1159         {
1160             /* It could be that nothing is queued right now, but that can be fixed */
1161             WARN("Called without samples in queue and not flushing!!\n");
1162         }
1163
1164         /* wait for an object to read, or time out */
1165         buffer = WaitForMultipleObjectsEx(This->samples+1, This->handle_list, FALSE, dwTimeout, TRUE);
1166
1167         if (buffer >= This->samples)
1168         {
1169             if (buffer != This->samples)
1170                 FIXME("Returned: %u (%08x)\n", buffer, GetLastError());
1171             hr = VFW_E_TIMEOUT;
1172             buffer = ~0;
1173         }
1174         else if (buffer < This->samples)
1175             InterlockedDecrement(&This->queued_number);
1176     }
1177
1178     EnterCriticalSection(&This->csList);
1179     if (This->bFlushing && buffer == ~0)
1180     {
1181         for (buffer = 0; buffer < This->samples; ++buffer)
1182         {
1183             if (This->sample_list[buffer].pSample)
1184             {
1185                 ResetEvent(This->handle_list[buffer]);
1186                 break;
1187             }
1188         }
1189         if (buffer == This->samples)
1190         {
1191             assert(!This->queued_number);
1192             hr = VFW_E_TIMEOUT;
1193         }
1194         else
1195         {
1196             InterlockedDecrement(&This->queued_number);
1197             hr = S_OK;
1198         }
1199     }
1200
1201     if (SUCCEEDED(hr))
1202     {
1203         REFERENCE_TIME rtStart, rtStop;
1204         REFERENCE_TIME rtSampleStart, rtSampleStop;
1205         DATAREQUEST *pDataRq = This->sample_list + buffer;
1206         DWORD dwBytes = 0;
1207
1208         /* get any errors */
1209         if (!This->bFlushing && !GetOverlappedResult(This->hFile, &pDataRq->ovl, &dwBytes, FALSE))
1210             hr = HRESULT_FROM_WIN32(GetLastError());
1211
1212         /* Return the sample no matter what so it can be destroyed */
1213         *ppSample = pDataRq->pSample;
1214         *pdwUser = pDataRq->dwUserData;
1215
1216         if (This->bFlushing)
1217             hr = VFW_E_WRONG_STATE;
1218
1219         if (FAILED(hr))
1220             dwBytes = 0;
1221
1222         /* Set the time on the sample */
1223         IMediaSample_SetActualDataLength(pDataRq->pSample, dwBytes);
1224
1225         rtStart = (DWORD64)pDataRq->ovl.u.s.Offset + ((DWORD64)pDataRq->ovl.u.s.OffsetHigh << 32);
1226         rtStart = MEDIATIME_FROM_BYTES(rtStart);
1227         rtStop = rtStart + MEDIATIME_FROM_BYTES(dwBytes);
1228
1229         IMediaSample_GetTime(pDataRq->pSample, &rtSampleStart, &rtSampleStop);
1230         assert(rtStart == rtSampleStart);
1231         assert(rtStop <= rtSampleStop);
1232
1233         IMediaSample_SetTime(pDataRq->pSample, &rtStart, &rtStop);
1234         assert(rtStart == rtSampleStart);
1235         if (hr == S_OK)
1236             assert(rtStop == rtSampleStop);
1237         else
1238             assert(rtStop == rtStart);
1239
1240         This->sample_list[buffer].pSample = NULL;
1241     }
1242     LeaveCriticalSection(&This->csList);
1243
1244     TRACE("-- %x\n", hr);
1245     return hr;
1246 }
1247
1248 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer);
1249
1250 static HRESULT WINAPI FileAsyncReader_SyncReadAligned(IAsyncReader * iface, IMediaSample * pSample)
1251 {
1252     BYTE * pBuffer;
1253     REFERENCE_TIME tStart;
1254     REFERENCE_TIME tStop;
1255     HRESULT hr;
1256
1257     TRACE("(%p)\n", pSample);
1258
1259     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
1260
1261     if (SUCCEEDED(hr))
1262         hr = IMediaSample_GetPointer(pSample, &pBuffer);
1263
1264     if (SUCCEEDED(hr))
1265         hr = FileAsyncReader_SyncRead(iface,
1266             BYTES_FROM_MEDIATIME(tStart),
1267             (LONG) BYTES_FROM_MEDIATIME(tStop - tStart),
1268             pBuffer);
1269
1270     TRACE("-- %x\n", hr);
1271     return hr;
1272 }
1273
1274 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer)
1275 {
1276     OVERLAPPED ovl;
1277     HRESULT hr = S_OK;
1278     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1279
1280     TRACE("(%x%08x, %d, %p)\n", (ULONG)(llPosition >> 32), (ULONG)llPosition, lLength, pBuffer);
1281
1282     ZeroMemory(&ovl, sizeof(ovl));
1283
1284     ovl.hEvent = CreateEventW(NULL, 0, 0, NULL);
1285     /* NOTE: llPosition is the actual byte position to start reading from */
1286     ovl.u.s.Offset = (DWORD) llPosition;
1287     ovl.u.s.OffsetHigh = (DWORD) (llPosition >> (sizeof(DWORD) * 8));
1288
1289     if (!ReadFile(This->hFile, pBuffer, lLength, NULL, &ovl))
1290         hr = HRESULT_FROM_WIN32(GetLastError());
1291
1292     if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1293         hr = S_OK;
1294
1295     if (SUCCEEDED(hr))
1296     {
1297         DWORD dwBytesRead;
1298
1299         if (!GetOverlappedResult(This->hFile, &ovl, &dwBytesRead, TRUE))
1300             hr = HRESULT_FROM_WIN32(GetLastError());
1301     }
1302
1303     CloseHandle(ovl.hEvent);
1304
1305     TRACE("-- %x\n", hr);
1306     return hr;
1307 }
1308
1309 static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader * iface, LONGLONG * pTotal, LONGLONG * pAvailable)
1310 {
1311     DWORD dwSizeLow;
1312     DWORD dwSizeHigh;
1313     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1314
1315     TRACE("(%p, %p)\n", pTotal, pAvailable);
1316
1317     if (((dwSizeLow = GetFileSize(This->hFile, &dwSizeHigh)) == -1) &&
1318         (GetLastError() != NO_ERROR))
1319         return HRESULT_FROM_WIN32(GetLastError());
1320
1321     *pTotal = (LONGLONG)dwSizeLow | (LONGLONG)dwSizeHigh << (sizeof(DWORD) * 8);
1322
1323     *pAvailable = *pTotal;
1324
1325     return S_OK;
1326 }
1327
1328 static HRESULT WINAPI FileAsyncReader_BeginFlush(IAsyncReader * iface)
1329 {
1330     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1331
1332     TRACE("()\n");
1333
1334     EnterCriticalSection(&This->csList);
1335     This->bFlushing = TRUE;
1336     CancelIo(This->hFile);
1337     SetEvent(This->handle_list[This->samples]);
1338     LeaveCriticalSection(&This->csList);
1339
1340     return S_OK;
1341 }
1342
1343 static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
1344 {
1345     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1346     int x;
1347
1348     TRACE("()\n");
1349
1350     EnterCriticalSection(&This->csList);
1351     ResetEvent(This->handle_list[This->samples]);
1352     This->bFlushing = FALSE;
1353     for (x = 0; x < This->samples; ++x)
1354         assert(!This->sample_list[x].pSample);
1355
1356     LeaveCriticalSection(&This->csList);
1357
1358     return S_OK;
1359 }
1360
1361 static const IAsyncReaderVtbl FileAsyncReader_Vtbl =
1362 {
1363     FileAsyncReader_QueryInterface,
1364     FileAsyncReader_AddRef,
1365     FileAsyncReader_Release,
1366     FileAsyncReader_RequestAllocator,
1367     FileAsyncReader_Request,
1368     FileAsyncReader_WaitForNext,
1369     FileAsyncReader_SyncReadAligned,
1370     FileAsyncReader_SyncRead,
1371     FileAsyncReader_Length,
1372     FileAsyncReader_BeginFlush,
1373     FileAsyncReader_EndFlush,
1374 };