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     BaseFilter filter;
  43     IFileSourceFilter IFileSourceFilter_iface;
  44     IAMFilterMiscFlags IAMFilterMiscFlags_iface;
  45
  46     IPin * pOutputPin;
  47     LPOLESTR pszFileName;
  48     AM_MEDIA_TYPE * pmt;
  49 } AsyncReader;
  50
  51 static inline AsyncReader *impl_from_BaseFilter(BaseFilter *iface)
  52 {
  53     return CONTAINING_RECORD(iface, AsyncReader, filter);
  54 }
  55
  56 static inline AsyncReader *impl_from_IBaseFilter(IBaseFilter *iface)
  57 {
  58     return CONTAINING_RECORD(iface, AsyncReader, filter.IBaseFilter_iface);
  59 }
  60
  61 static inline AsyncReader *impl_from_IFileSourceFilter(IFileSourceFilter *iface)
  62 {
  63     return CONTAINING_RECORD(iface, AsyncReader, IFileSourceFilter_iface);
  64 }
  65
  66 static inline AsyncReader *impl_from_IAMFilterMiscFlags(IAMFilterMiscFlags *iface)
  67 {
  68     return CONTAINING_RECORD(iface, AsyncReader, IAMFilterMiscFlags_iface);
  69 }
  70
  71 static const IBaseFilterVtbl AsyncReader_Vtbl;
  72 static const IFileSourceFilterVtbl FileSource_Vtbl;
  73 static const IAsyncReaderVtbl FileAsyncReader_Vtbl;
  74 static const IAMFilterMiscFlagsVtbl IAMFilterMiscFlags_Vtbl;
  75
  76 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);
  77
  78 static const WCHAR mediatype_name[] = {
  79     'M', 'e', 'd', 'i', 'a', ' ', 'T', 'y', 'p', 'e', 0 };
  80 static const WCHAR subtype_name[] = {
  81     'S', 'u', 'b', 't', 'y', 'p', 'e', 0 };
  82 static const WCHAR source_filter_name[] = {
  83     'S','o','u','r','c','e',' ','F','i','l','t','e','r',0};
  84
  85 static HRESULT process_extensions(HKEY hkeyExtensions, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType, GUID * sourceFilter)
  86 {
  87     WCHAR *extension;
  88     LONG l;
  89     HKEY hsub;
  90     WCHAR keying[39];
  91     DWORD size;
  92
  93     if (!pszFileName)
  94         return E_POINTER;
  95
  96     /* Get the part of the name that matters */
  97     extension = PathFindExtensionW(pszFileName);
  98     if (*extension != '.')
  99         return E_FAIL;
 100
 101     l = RegOpenKeyExW(hkeyExtensions, extension, 0, KEY_READ, &hsub);
 102     if (l)
 103         return E_FAIL;
 104
 105     if (majorType)
 106     {
 107         size = sizeof(keying);
 108         l = RegQueryValueExW(hsub, mediatype_name, NULL, NULL, (LPBYTE)keying, &size);
 109         if (!l)
 110             CLSIDFromString(keying, majorType);
 111     }
 112
 113     if (minorType)
 114     {
 115         size = sizeof(keying);
 116         if (!l)
 117             l = RegQueryValueExW(hsub, subtype_name, NULL, NULL, (LPBYTE)keying, &size);
 118         if (!l)
 119             CLSIDFromString(keying, minorType);
 120     }
 121
 122     if (sourceFilter)
 123     {
 124         size = sizeof(keying);
 125         if (!l)
 126             l = RegQueryValueExW(hsub, source_filter_name, NULL, NULL, (LPBYTE)keying, &size);
 127         if (!l)
 128             CLSIDFromString(keying, sourceFilter);
 129     }
 130
 131     RegCloseKey(hsub);
 132
 133     if (!l)
 134         return S_OK;
 135     return E_FAIL;
 136 }
 137
 138 static unsigned char byte_from_hex_char(WCHAR wHex)
 139 {
 140     switch (tolowerW(wHex))
 141     {
 142     case '0':
 143     case '1':
 144     case '2':
 145     case '3':
 146     case '4':
 147     case '5':
 148     case '6':
 149     case '7':
 150     case '8':
 151     case '9':
 152         return (wHex - '0') & 0xf;
 153     case 'a':
 154     case 'b':
 155     case 'c':
 156     case 'd':
 157     case 'e':
 158     case 'f':
 159         return (wHex - 'a' + 10) & 0xf;
 160     default:
 161         return 0;
 162     }
 163 }
 164
 165 static HRESULT process_pattern_string(LPCWSTR wszPatternString, IAsyncReader * pReader)
 166 {
 167     ULONG ulOffset;
 168     ULONG ulBytes;
 169     BYTE * pbMask;
 170     BYTE * pbValue;
 171     BYTE * pbFile;
 172     HRESULT hr = S_OK;
 173     ULONG strpos;
 174
 175     TRACE("\t\tPattern string: %s\n", debugstr_w(wszPatternString));
 176
 177     /* format: "offset, bytestocompare, mask, value" */
 178
 179     ulOffset = strtolW(wszPatternString, NULL, 10);
 180
 181     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 182         return E_INVALIDARG;
 183
 184     wszPatternString++; /* skip ',' */
 185
 186     ulBytes = strtolW(wszPatternString, NULL, 10);
 187
 188     pbMask = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 189     pbValue = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ulBytes);
 190     pbFile = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 191
 192     /* default mask is match everything */
 193     memset(pbMask, 0xFF, ulBytes);
 194
 195     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 196         hr = E_INVALIDARG;
 197
 198     if (hr == S_OK)
 199     {
 200         wszPatternString++; /* skip ',' */
 201         while (!isxdigitW(*wszPatternString) && (*wszPatternString != ',')) wszPatternString++;
 202
 203         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 204         {
 205             if ((strpos % 2) == 1) /* odd numbered position */
 206                 pbMask[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 207             else
 208                 pbMask[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 209         }
 210
 211         if (!(wszPatternString = strchrW(wszPatternString, ',')))
 212             hr = E_INVALIDARG;
 213         else
 214             wszPatternString++; /* skip ',' */
 215     }
 216
 217     if (hr == S_OK)
 218     {
 219         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 220             ;
 221
 222         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 223         {
 224             if ((strpos % 2) == 1) /* odd numbered position */
 225                 pbValue[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 226             else
 227                 pbValue[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 228         }
 229     }
 230
 231     if (hr == S_OK)
 232         hr = IAsyncReader_SyncRead(pReader, ulOffset, ulBytes, pbFile);
 233
 234     if (hr == S_OK)
 235     {
 236         ULONG i;
 237         for (i = 0; i < ulBytes; i++)
 238             if ((pbFile[i] & pbMask[i]) != pbValue[i])
 239             {
 240                 hr = S_FALSE;
 241                 break;
 242             }
 243     }
 244
 245     HeapFree(GetProcessHeap(), 0, pbMask);
 246     HeapFree(GetProcessHeap(), 0, pbValue);
 247     HeapFree(GetProcessHeap(), 0, pbFile);
 248
 249     /* if we encountered no errors with this string, and there is a following tuple, then we
 250      * have to match that as well to succeed */
 251     if ((hr == S_OK) && (wszPatternString = strchrW(wszPatternString, ',')))
 252         return process_pattern_string(wszPatternString + 1, pReader);
 253     else
 254         return hr;
 255 }
 256
 257 HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType, GUID * sourceFilter)
 258 {
 259     HKEY hkeyMediaType = NULL;
 260     LONG lRet;
 261     HRESULT hr = S_OK;
 262     BOOL bFound = FALSE;
 263     static const WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
 264
 265     TRACE("(%p, %s, %p, %p)\n", pReader, debugstr_w(pszFileName), majorType, minorType);
 266
 267     if(majorType)
 268         *majorType = GUID_NULL;
 269     if(minorType)
 270         *minorType = GUID_NULL;
 271     if(sourceFilter)
 272         *sourceFilter = GUID_NULL;
 273
 274     lRet = RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &hkeyMediaType);
 275     hr = HRESULT_FROM_WIN32(lRet);
 276
 277     if (SUCCEEDED(hr))
 278     {
 279         DWORD indexMajor;
 280
 281         for (indexMajor = 0; !bFound; indexMajor++)
 282         {
 283             HKEY hkeyMajor;
 284             WCHAR wszMajorKeyName[CHARS_IN_GUID];
 285             DWORD dwKeyNameLength = sizeof(wszMajorKeyName) / sizeof(wszMajorKeyName[0]);
 286             static const WCHAR wszExtensions[] = {'E','x','t','e','n','s','i','o','n','s',0};
 287
 288             if (RegEnumKeyExW(hkeyMediaType, indexMajor, wszMajorKeyName, &dwKeyNameLength, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 289                 break;
 290             if (RegOpenKeyExW(hkeyMediaType, wszMajorKeyName, 0, KEY_READ, &hkeyMajor) != ERROR_SUCCESS)
 291                 break;
 292             TRACE("%s\n", debugstr_w(wszMajorKeyName));
 293             if (!strcmpW(wszExtensions, wszMajorKeyName))
 294             {
 295                 if (process_extensions(hkeyMajor, pszFileName, majorType, minorType, sourceFilter) == S_OK)
 296                     bFound = TRUE;
 297             }
 298             /* We need a reader interface to check bytes */
 299             else if (pReader)
 300             {
 301                 DWORD indexMinor;
 302
 303                 for (indexMinor = 0; !bFound; indexMinor++)
 304                 {
 305                     HKEY hkeyMinor;
 306                     WCHAR wszMinorKeyName[CHARS_IN_GUID];
 307                     DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]);
 308                     WCHAR wszSourceFilterKeyName[CHARS_IN_GUID];
 309                     DWORD dwSourceFilterKeyNameLen = sizeof(wszSourceFilterKeyName);
 310                     DWORD maxValueLen;
 311                     DWORD indexValue;
 312
 313                     if (RegEnumKeyExW(hkeyMajor, indexMinor, wszMinorKeyName, &dwMinorKeyNameLen, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 314                         break;
 315
 316                     if (RegOpenKeyExW(hkeyMajor, wszMinorKeyName, 0, KEY_READ, &hkeyMinor) != ERROR_SUCCESS)
 317                         break;
 318
 319                     TRACE("\t%s\n", debugstr_w(wszMinorKeyName));
 320
 321                     if (RegQueryInfoKeyW(hkeyMinor, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &maxValueLen, NULL, NULL) != ERROR_SUCCESS)
 322                         break;
 323
 324                     for (indexValue = 0; !bFound; indexValue++)
 325                     {
 326                         DWORD dwType;
 327                         WCHAR wszValueName[14]; /* longest name we should encounter will be "Source Filter" */
 328                         LPWSTR wszPatternString = HeapAlloc(GetProcessHeap(), 0, maxValueLen);
 329                         DWORD dwValueNameLen = sizeof(wszValueName) / sizeof(wszValueName[0]); /* remember this is in chars */
 330                         DWORD dwDataLen = maxValueLen; /* remember this is in bytes */
 331
 332                         if (RegEnumValueW(hkeyMinor, indexValue, wszValueName, &dwValueNameLen, NULL, &dwType, (LPBYTE)wszPatternString, &dwDataLen) != ERROR_SUCCESS)
 333                         {
 334                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 335                             break;
 336                         }
 337
 338                         if (strcmpW(wszValueName, source_filter_name)==0) {
 339                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 340                             continue;
 341                         }
 342
 343                         /* if it is not the source filter value */
 344                         if (process_pattern_string(wszPatternString, pReader) == S_OK)
 345                         {
 346                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 347                             if (majorType && FAILED(CLSIDFromString(wszMajorKeyName, majorType)))
 348                                 break;
 349                             if (minorType && FAILED(CLSIDFromString(wszMinorKeyName, minorType)))
 350                                 break;
 351                             if (sourceFilter)
 352                             {
 353                                 /* Look up the source filter key */
 354                                 if (RegQueryValueExW(hkeyMinor, source_filter_name, NULL, NULL, (LPBYTE)wszSourceFilterKeyName, &dwSourceFilterKeyNameLen))
 355                                     break;
 356                                 if (FAILED(CLSIDFromString(wszSourceFilterKeyName, sourceFilter)))
 357                                     break;
 358                             }
 359                             bFound = TRUE;
 360                         } else
 361                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 362                     }
 363                     CloseHandle(hkeyMinor);
 364                 }
 365             }
 366             CloseHandle(hkeyMajor);
 367         }
 368     }
 369     CloseHandle(hkeyMediaType);
 370
 371     if (SUCCEEDED(hr) && !bFound)
 372     {
 373         ERR("Media class not found\n");
 374         hr = E_FAIL;
 375     }
 376     else if (bFound)
 377     {
 378         TRACE("Found file's class:\n");
 379         if(majorType)
 380                 TRACE("\tmajor = %s\n", qzdebugstr_guid(majorType));
 381         if(minorType)
 382                 TRACE("\tsubtype = %s\n", qzdebugstr_guid(minorType));
 383         if(sourceFilter)
 384                 TRACE("\tsource filter = %s\n", qzdebugstr_guid(sourceFilter));
 385     }
 386
 387     return hr;
 388 }
 389
 390 static IPin* WINAPI AsyncReader_GetPin(BaseFilter *iface, int pos)
 391 {
 392     AsyncReader *This = impl_from_BaseFilter(iface);
 393
 394     if (pos >= 1 || !This->pOutputPin)
 395         return NULL;
 396
 397     IPin_AddRef(This->pOutputPin);
 398     return This->pOutputPin;
 399 }
 400
 401 static LONG WINAPI AsyncReader_GetPinCount(BaseFilter *iface)
 402 {
 403     AsyncReader *This = impl_from_BaseFilter(iface);
 404
 405     if (!This->pOutputPin)
 406         return 0;
 407     else
 408         return 1;
 409 }
 410
 411 static const BaseFilterFuncTable BaseFuncTable = {
 412     AsyncReader_GetPin,
 413     AsyncReader_GetPinCount
 414 };
 415
 416 HRESULT AsyncReader_create(IUnknown * pUnkOuter, LPVOID * ppv)
 417 {
 418     AsyncReader *pAsyncRead;
 419
 420     if( pUnkOuter )
 421         return CLASS_E_NOAGGREGATION;
 422
 423     pAsyncRead = CoTaskMemAlloc(sizeof(AsyncReader));
 424
 425     if (!pAsyncRead)
 426         return E_OUTOFMEMORY;
 427
 428     BaseFilter_Init(&pAsyncRead->filter, &AsyncReader_Vtbl, &CLSID_AsyncReader, (DWORD_PTR)(__FILE__ ": AsyncReader.csFilter"), &BaseFuncTable);
 429
 430     pAsyncRead->IFileSourceFilter_iface.lpVtbl = &FileSource_Vtbl;
 431     pAsyncRead->IAMFilterMiscFlags_iface.lpVtbl = &IAMFilterMiscFlags_Vtbl;
 432     pAsyncRead->pOutputPin = NULL;
 433
 434     pAsyncRead->pszFileName = NULL;
 435     pAsyncRead->pmt = NULL;
 436
 437     *ppv = pAsyncRead;
 438
 439     TRACE("-- created at %p\n", pAsyncRead);
 440
 441     return S_OK;
 442 }
 443
 444 /** IUnknown methods **/
 445
 446 static HRESULT WINAPI AsyncReader_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 447 {
 448     AsyncReader *This = impl_from_IBaseFilter(iface);
 449
 450     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 451
 452     *ppv = NULL;
 453
 454     if (IsEqualIID(riid, &IID_IUnknown))
 455         *ppv = This;
 456     else if (IsEqualIID(riid, &IID_IPersist))
 457         *ppv = This;
 458     else if (IsEqualIID(riid, &IID_IMediaFilter))
 459         *ppv = This;
 460     else if (IsEqualIID(riid, &IID_IBaseFilter))
 461         *ppv = This;
 462     else if (IsEqualIID(riid, &IID_IFileSourceFilter))
 463         *ppv = &This->IFileSourceFilter_iface;
 464     else if (IsEqualIID(riid, &IID_IAMFilterMiscFlags))
 465         *ppv = &This->IAMFilterMiscFlags_iface;
 466
 467     if (*ppv)
 468     {
 469         IUnknown_AddRef((IUnknown *)(*ppv));
 470         return S_OK;
 471     }
 472
 473     if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IMediaSeeking) &&
 474         !IsEqualIID(riid, &IID_IVideoWindow) && !IsEqualIID(riid, &IID_IBasicAudio))
 475         FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 476
 477     return E_NOINTERFACE;
 478 }
 479
 480 static ULONG WINAPI AsyncReader_Release(IBaseFilter * iface)
 481 {
 482     AsyncReader *This = impl_from_IBaseFilter(iface);
 483     ULONG refCount = BaseFilterImpl_Release(iface);
 484
 485     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 486
 487     if (!refCount)
 488     {
 489         if (This->pOutputPin)
 490         {
 491             IPin *pConnectedTo;
 492             if(SUCCEEDED(IPin_ConnectedTo(This->pOutputPin, &pConnectedTo)))
 493             {
 494                 IPin_Disconnect(pConnectedTo);
 495                 IPin_Release(pConnectedTo);
 496             }
 497             IPin_Disconnect(This->pOutputPin);
 498             IPin_Release(This->pOutputPin);
 499         }
 500         CoTaskMemFree(This->pszFileName);
 501         if (This->pmt)
 502             FreeMediaType(This->pmt);
 503         CoTaskMemFree(This);
 504         return 0;
 505     }
 506     else
 507         return refCount;
 508 }
 509
 510 /** IMediaFilter methods **/
 511
 512 static HRESULT WINAPI AsyncReader_Stop(IBaseFilter * iface)
 513 {
 514     AsyncReader *This = impl_from_IBaseFilter(iface);
 515
 516     TRACE("()\n");
 517
 518     This->filter.state = State_Stopped;
 519
 520     return S_OK;
 521 }
 522
 523 static HRESULT WINAPI AsyncReader_Pause(IBaseFilter * iface)
 524 {
 525     AsyncReader *This = impl_from_IBaseFilter(iface);
 526
 527     TRACE("()\n");
 528
 529     This->filter.state = State_Paused;
 530
 531     return S_OK;
 532 }
 533
 534 static HRESULT WINAPI AsyncReader_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 535 {
 536     AsyncReader *This = impl_from_IBaseFilter(iface);
 537
 538     TRACE("(%x%08x)\n", (ULONG)(tStart >> 32), (ULONG)tStart);
 539
 540     This->filter.state = State_Running;
 541
 542     return S_OK;
 543 }
 544
 545 /** IBaseFilter methods **/
 546
 547 static HRESULT WINAPI AsyncReader_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 548 {
 549     AsyncReader *This = impl_from_IBaseFilter(iface);
 550     TRACE("(%s, %p)\n", debugstr_w(Id), ppPin);
 551
 552     if (!Id || !ppPin)
 553         return E_POINTER;
 554
 555     if (strcmpW(Id, wszOutputPinName))
 556     {
 557         *ppPin = NULL;
 558         return VFW_E_NOT_FOUND;
 559     }
 560
 561     *ppPin = This->pOutputPin;
 562     IPin_AddRef(*ppPin);
 563     return S_OK;
 564 }
 565
 566 static const IBaseFilterVtbl AsyncReader_Vtbl =
 567 {
 568     AsyncReader_QueryInterface,
 569     BaseFilterImpl_AddRef,
 570     AsyncReader_Release,
 571     BaseFilterImpl_GetClassID,
 572     AsyncReader_Stop,
 573     AsyncReader_Pause,
 574     AsyncReader_Run,
 575     BaseFilterImpl_GetState,
 576     BaseFilterImpl_SetSyncSource,
 577     BaseFilterImpl_GetSyncSource,
 578     BaseFilterImpl_EnumPins,
 579     AsyncReader_FindPin,
 580     BaseFilterImpl_QueryFilterInfo,
 581     BaseFilterImpl_JoinFilterGraph,
 582     BaseFilterImpl_QueryVendorInfo
 583 };
 584
 585 static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
 586 {
 587     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 588
 589     return IBaseFilter_QueryInterface(&This->filter.IBaseFilter_iface, riid, ppv);
 590 }
 591
 592 static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
 593 {
 594     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 595
 596     return IBaseFilter_AddRef(&This->filter.IBaseFilter_iface);
 597 }
 598
 599 static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
 600 {
 601     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 602
 603     return IBaseFilter_Release(&This->filter.IBaseFilter_iface);
 604 }
 605
 606 static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
 607 {
 608     HRESULT hr;
 609     HANDLE hFile;
 610     IAsyncReader * pReader = NULL;
 611     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 612
 613     TRACE("(%s, %p)\n", debugstr_w(pszFileName), pmt);
 614
 615     /* open file */
 616     /* FIXME: check the sharing values that native uses */
 617     hFile = CreateFileW(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
 618
 619     if (hFile == INVALID_HANDLE_VALUE)
 620     {
 621         return HRESULT_FROM_WIN32(GetLastError());
 622     }
 623
 624     /* create pin */
 625     hr = FileAsyncReader_Construct(hFile, &This->filter.IBaseFilter_iface, &This->filter.csFilter, &This->pOutputPin);
 626     BaseFilterImpl_IncrementPinVersion(&This->filter);
 627
 628     if (SUCCEEDED(hr))
 629         hr = IPin_QueryInterface(This->pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader);
 630
 631     /* store file name & media type */
 632     if (SUCCEEDED(hr))
 633     {
 634         CoTaskMemFree(This->pszFileName);
 635         if (This->pmt)
 636             FreeMediaType(This->pmt);
 637
 638         This->pszFileName = CoTaskMemAlloc((strlenW(pszFileName) + 1) * sizeof(WCHAR));
 639         strcpyW(This->pszFileName, pszFileName);
 640
 641         This->pmt = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
 642         if (!pmt)
 643         {
 644             This->pmt->bFixedSizeSamples = TRUE;
 645             This->pmt->bTemporalCompression = FALSE;
 646             This->pmt->cbFormat = 0;
 647             This->pmt->pbFormat = NULL;
 648             This->pmt->pUnk = NULL;
 649             This->pmt->lSampleSize = 0;
 650             This->pmt->formattype = FORMAT_None;
 651             hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype, NULL);
 652             if (FAILED(hr))
 653             {
 654                 CoTaskMemFree(This->pmt);
 655                 This->pmt = NULL;
 656             }
 657         }
 658         else
 659             CopyMediaType(This->pmt, pmt);
 660     }
 661
 662     if (pReader)
 663         IAsyncReader_Release(pReader);
 664
 665     if (FAILED(hr))
 666     {
 667         if (This->pOutputPin)
 668         {
 669             IPin_Release(This->pOutputPin);
 670             This->pOutputPin = NULL;
 671         }
 672
 673         CoTaskMemFree(This->pszFileName);
 674         if (This->pmt)
 675             FreeMediaType(This->pmt);
 676         This->pszFileName = NULL;
 677         This->pmt = NULL;
 678
 679         CloseHandle(hFile);
 680     }
 681
 682     /* FIXME: check return codes */
 683     return hr;
 684 }
 685
 686 static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter * iface, LPOLESTR * ppszFileName, AM_MEDIA_TYPE * pmt)
 687 {
 688     AsyncReader *This = impl_from_IFileSourceFilter(iface);
 689
 690     TRACE("(%p, %p)\n", ppszFileName, pmt);
 691
 692     if (!ppszFileName)
 693         return E_POINTER;
 694
 695     /* copy file name & media type if available, otherwise clear the outputs */
 696     if (This->pszFileName)
 697     {
 698         *ppszFileName = CoTaskMemAlloc((strlenW(This->pszFileName) + 1) * sizeof(WCHAR));
 699         strcpyW(*ppszFileName, This->pszFileName);
 700     }
 701     else
 702         *ppszFileName = NULL;
 703
 704     if (pmt)
 705     {
 706         if (This->pmt)
 707             CopyMediaType(pmt, This->pmt);
 708         else
 709             ZeroMemory(pmt, sizeof(*pmt));
 710     }
 711
 712     return S_OK;
 713 }
 714
 715 static const IFileSourceFilterVtbl FileSource_Vtbl =
 716 {
 717     FileSource_QueryInterface,
 718     FileSource_AddRef,
 719     FileSource_Release,
 720     FileSource_Load,
 721     FileSource_GetCurFile
 722 };
 723
 724
 725 /* the dwUserData passed back to user */
 726 typedef struct DATAREQUEST
 727 {
 728     IMediaSample * pSample; /* sample passed to us by user */
 729     DWORD_PTR dwUserData; /* user data passed to us */
 730     OVERLAPPED ovl; /* our overlapped structure */
 731 } DATAREQUEST;
 732
 733 typedef struct FileAsyncReader
 734 {
 735     BaseOutputPin pin;
 736     IAsyncReader IAsyncReader_iface;
 737
 738     ALLOCATOR_PROPERTIES allocProps;
 739     HANDLE hFile;
 740     BOOL bFlushing;
 741     /* Why would you need more? Every sample has its own handle */
 742     LONG queued_number;
 743     LONG samples;
 744     LONG oldest_sample;
 745     CRITICAL_SECTION csList; /* critical section to prevent concurrency issues */
 746     DATAREQUEST *sample_list;
 747
 748     /* Have a handle for every sample, and then one more as flushing handle */
 749     HANDLE *handle_list;
 750 } FileAsyncReader;
 751
 752 static inline FileAsyncReader *impl_from_IPin(IPin *iface)
 753 {
 754     return CONTAINING_RECORD(iface, FileAsyncReader, pin.pin.IPin_iface);
 755 }
 756
 757 static inline FileAsyncReader *impl_from_BasePin(BasePin *iface)
 758 {
 759     return CONTAINING_RECORD(iface, FileAsyncReader, pin.pin);
 760 }
 761
 762 static inline FileAsyncReader *impl_from_BaseOutputPin(BaseOutputPin *iface)
 763 {
 764     return CONTAINING_RECORD(iface, FileAsyncReader, pin);
 765 }
 766
 767 static inline BaseOutputPin *impl_BaseOututPin_from_BasePin(BasePin *iface)
 768 {
 769     return CONTAINING_RECORD(iface, BaseOutputPin, pin);
 770 }
 771
 772 static inline FileAsyncReader *impl_from_IAsyncReader(IAsyncReader *iface)
 773 {
 774     return CONTAINING_RECORD(iface, FileAsyncReader, IAsyncReader_iface);
 775 }
 776
 777 static HRESULT WINAPI FileAsyncReaderPin_QueryAccept(IPin *iface, const AM_MEDIA_TYPE *pmt)
 778 {
 779     FileAsyncReader *This = impl_from_IPin(iface);
 780     AM_MEDIA_TYPE *pmt_filter = impl_from_IBaseFilter(This->pin.pin.pinInfo.pFilter)->pmt;
 781
 782     FIXME("(%p, %p)\n", iface, pmt);
 783
 784     if (IsEqualGUID(&pmt->majortype, &pmt_filter->majortype) &&
 785         IsEqualGUID(&pmt->subtype, &pmt_filter->subtype) &&
 786         IsEqualGUID(&pmt->formattype, &FORMAT_None))
 787         return S_OK;
 788
 789     return S_FALSE;
 790 }
 791
 792 static HRESULT WINAPI FileAsyncReaderPin_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
 793 {
 794     FileAsyncReader *This = impl_from_BasePin(iface);
 795     if (iPosition < 0)
 796         return E_INVALIDARG;
 797     if (iPosition > 0)
 798         return VFW_S_NO_MORE_ITEMS;
 799     CopyMediaType(pmt, impl_from_IBaseFilter(This->pin.pin.pinInfo.pFilter)->pmt);
 800     return S_OK;
 801 }
 802
 803 /* overridden pin functions */
 804
 805 static HRESULT WINAPI FileAsyncReaderPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 806 {
 807     FileAsyncReader *This = impl_from_IPin(iface);
 808     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 809
 810     *ppv = NULL;
 811
 812     if (IsEqualIID(riid, &IID_IUnknown))
 813         *ppv = This;
 814     else if (IsEqualIID(riid, &IID_IPin))
 815         *ppv = This;
 816     else if (IsEqualIID(riid, &IID_IAsyncReader))
 817         *ppv = &This->IAsyncReader_iface;
 818
 819     if (*ppv)
 820     {
 821         IUnknown_AddRef((IUnknown *)(*ppv));
 822         return S_OK;
 823     }
 824
 825     if (!IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IMediaSeeking))
 826         FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 827
 828     return E_NOINTERFACE;
 829 }
 830
 831 static ULONG WINAPI FileAsyncReaderPin_Release(IPin * iface)
 832 {
 833     FileAsyncReader *This = impl_from_IPin(iface);
 834     ULONG refCount = InterlockedDecrement(&This->pin.pin.refCount);
 835     int x;
 836
 837     TRACE("(%p)->() Release from %d\n", This, refCount + 1);
 838
 839     if (!refCount)
 840     {
 841         CoTaskMemFree(This->sample_list);
 842         if (This->handle_list)
 843         {
 844             for (x = 0; x <= This->samples; ++x)
 845                 CloseHandle(This->handle_list[x]);
 846             CoTaskMemFree(This->handle_list);
 847         }
 848         CloseHandle(This->hFile);
 849         This->csList.DebugInfo->Spare[0] = 0;
 850         DeleteCriticalSection(&This->csList);
 851         CoTaskMemFree(This);
 852         return 0;
 853     }
 854     return refCount;
 855 }
 856
 857 static const IPinVtbl FileAsyncReaderPin_Vtbl =
 858 {
 859     FileAsyncReaderPin_QueryInterface,
 860     BasePinImpl_AddRef,
 861     FileAsyncReaderPin_Release,
 862     BaseOutputPinImpl_Connect,
 863     BaseOutputPinImpl_ReceiveConnection,
 864     BasePinImpl_Disconnect,
 865     BasePinImpl_ConnectedTo,
 866     BasePinImpl_ConnectionMediaType,
 867     BasePinImpl_QueryPinInfo,
 868     BasePinImpl_QueryDirection,
 869     BasePinImpl_QueryId,
 870     FileAsyncReaderPin_QueryAccept,
 871     BasePinImpl_EnumMediaTypes,
 872     BasePinImpl_QueryInternalConnections,
 873     BaseOutputPinImpl_EndOfStream,
 874     BaseOutputPinImpl_BeginFlush,
 875     BaseOutputPinImpl_EndFlush,
 876     BasePinImpl_NewSegment
 877 };
 878
 879 /* Function called as a helper to IPin_Connect */
 880 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 881 /* this differs from standard OutputPin_AttemptConnection only in that it
 882  * doesn't need the IMemInputPin interface on the receiving pin */
 883 static HRESULT WINAPI FileAsyncReaderPin_AttemptConnection(BasePin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 884 {
 885     BaseOutputPin *This = impl_BaseOututPin_from_BasePin(iface);
 886     HRESULT hr;
 887
 888     TRACE("(%p, %p)\n", pReceivePin, pmt);
 889     dump_AM_MEDIA_TYPE(pmt);
 890
 891     /* FIXME: call queryacceptproc */
 892
 893     This->pin.pConnectedTo = pReceivePin;
 894     IPin_AddRef(pReceivePin);
 895     CopyMediaType(&This->pin.mtCurrent, pmt);
 896
 897     hr = IPin_ReceiveConnection(pReceivePin, &iface->IPin_iface, pmt);
 898
 899     if (FAILED(hr))
 900     {
 901         IPin_Release(This->pin.pConnectedTo);
 902         This->pin.pConnectedTo = NULL;
 903         FreeMediaType(&This->pin.mtCurrent);
 904     }
 905
 906     TRACE(" -- %x\n", hr);
 907     return hr;
 908 }
 909
 910 static HRESULT WINAPI FileAsyncReaderPin_DecideBufferSize(BaseOutputPin *iface, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)
 911 {
 912     FileAsyncReader *This = impl_from_BaseOutputPin(iface);
 913     ALLOCATOR_PROPERTIES actual;
 914
 915     if (ppropInputRequest->cbAlign && ppropInputRequest->cbAlign != This->allocProps.cbAlign)
 916         FIXME("Requested Buffer cbAlign mismatch %i,%i\n",This->allocProps.cbAlign, ppropInputRequest->cbAlign);
 917     if (ppropInputRequest->cbPrefix)
 918         FIXME("Requested Buffer cbPrefix mismatch %i,%i\n",This->allocProps.cbPrefix, ppropInputRequest->cbPrefix);
 919     if (ppropInputRequest->cbBuffer)
 920         FIXME("Requested Buffer cbBuffer mismatch %i,%i\n",This->allocProps.cbBuffer, ppropInputRequest->cbBuffer);
 921     if (ppropInputRequest->cBuffers)
 922         FIXME("Requested Buffer cBuffers mismatch %i,%i\n",This->allocProps.cBuffers, ppropInputRequest->cBuffers);
 923
 924     return IMemAllocator_SetProperties(pAlloc, &This->allocProps, &actual);
 925 }
 926
 927 static const BaseOutputPinFuncTable output_BaseOutputFuncTable = {
 928     {
 929         NULL,
 930         FileAsyncReaderPin_AttemptConnection,
 931         BasePinImpl_GetMediaTypeVersion,
 932         FileAsyncReaderPin_GetMediaType
 933     },
 934     FileAsyncReaderPin_DecideBufferSize,
 935     BaseOutputPinImpl_DecideAllocator,
 936     BaseOutputPinImpl_BreakConnect
 937 };
 938
 939 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 940 {
 941     PIN_INFO piOutput;
 942     HRESULT hr;
 943
 944     *ppPin = NULL;
 945     piOutput.dir = PINDIR_OUTPUT;
 946     piOutput.pFilter = pBaseFilter;
 947     strcpyW(piOutput.achName, wszOutputPinName);
 948     hr = BaseOutputPin_Construct(&FileAsyncReaderPin_Vtbl, sizeof(FileAsyncReader), &piOutput, &output_BaseOutputFuncTable, pCritSec, ppPin);
 949
 950     if (SUCCEEDED(hr))
 951     {
 952         FileAsyncReader *pPinImpl =  (FileAsyncReader *)*ppPin;
 953         pPinImpl->IAsyncReader_iface.lpVtbl = &FileAsyncReader_Vtbl;
 954         pPinImpl->hFile = hFile;
 955         pPinImpl->bFlushing = FALSE;
 956         pPinImpl->sample_list = NULL;
 957         pPinImpl->handle_list = NULL;
 958         pPinImpl->queued_number = 0;
 959         InitializeCriticalSection(&pPinImpl->csList);
 960         pPinImpl->csList.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": FileAsyncReader.csList");
 961     }
 962     return hr;
 963 }
 964
 965 /* IAsyncReader */
 966
 967 static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader * iface, REFIID riid, LPVOID * ppv)
 968 {
 969     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 970
 971     return IPin_QueryInterface(&This->pin.pin.IPin_iface, riid, ppv);
 972 }
 973
 974 static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
 975 {
 976     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 977
 978     return IPin_AddRef(&This->pin.pin.IPin_iface);
 979 }
 980
 981 static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
 982 {
 983     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 984
 985     return IPin_Release(&This->pin.pin.IPin_iface);
 986 }
 987
 988 #define DEF_ALIGNMENT 1
 989
 990 static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader * iface, IMemAllocator * pPreferred, ALLOCATOR_PROPERTIES * pProps, IMemAllocator ** ppActual)
 991 {
 992     FileAsyncReader *This = impl_from_IAsyncReader(iface);
 993
 994     HRESULT hr = S_OK;
 995
 996     TRACE("(%p, %p, %p)\n", pPreferred, pProps, ppActual);
 997
 998     if (!pProps->cbAlign || (pProps->cbAlign % DEF_ALIGNMENT) != 0)
 999         pProps->cbAlign = DEF_ALIGNMENT;
1000
1001     if (pPreferred)
1002     {
1003         hr = IMemAllocator_SetProperties(pPreferred, pProps, pProps);
1004         /* FIXME: check we are still aligned */
1005         if (SUCCEEDED(hr))
1006         {
1007             IMemAllocator_AddRef(pPreferred);
1008             *ppActual = pPreferred;
1009             TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
1010             goto done;
1011         }
1012     }
1013
1014     pPreferred = NULL;
1015
1016     hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC, &IID_IMemAllocator, (LPVOID *)&pPreferred);
1017
1018     if (SUCCEEDED(hr))
1019     {
1020         hr = IMemAllocator_SetProperties(pPreferred, pProps, pProps);
1021         /* FIXME: check we are still aligned */
1022         if (SUCCEEDED(hr))
1023         {
1024             *ppActual = pPreferred;
1025             TRACE("FileAsyncReader_RequestAllocator -- %x\n", hr);
1026         }
1027     }
1028
1029 done:
1030     if (SUCCEEDED(hr))
1031     {
1032         CoTaskMemFree(This->sample_list);
1033         if (This->handle_list)
1034         {
1035             int x;
1036             for (x = 0; x <= This->samples; ++x)
1037                 CloseHandle(This->handle_list[x]);
1038             CoTaskMemFree(This->handle_list);
1039         }
1040
1041         This->samples = pProps->cBuffers;
1042         This->oldest_sample = 0;
1043         TRACE("Samples: %u\n", This->samples);
1044         This->sample_list = CoTaskMemAlloc(sizeof(This->sample_list[0]) * pProps->cBuffers);
1045         This->handle_list = CoTaskMemAlloc(sizeof(HANDLE) * pProps->cBuffers * 2);
1046
1047         if (This->sample_list && This->handle_list)
1048         {
1049             int x;
1050             ZeroMemory(This->sample_list, sizeof(This->sample_list[0]) * pProps->cBuffers);
1051             for (x = 0; x < This->samples; ++x)
1052             {
1053                 This->sample_list[x].ovl.hEvent = This->handle_list[x] = CreateEventW(NULL, 0, 0, NULL);
1054                 if (x + 1 < This->samples)
1055                     This->handle_list[This->samples + 1 + x] = This->handle_list[x];
1056             }
1057             This->handle_list[This->samples] = CreateEventW(NULL, 1, 0, NULL);
1058             This->allocProps = *pProps;
1059         }
1060         else
1061         {
1062             hr = E_OUTOFMEMORY;
1063             CoTaskMemFree(This->sample_list);
1064             CoTaskMemFree(This->handle_list);
1065             This->samples = 0;
1066             This->sample_list = NULL;
1067             This->handle_list = NULL;
1068         }
1069     }
1070
1071     if (FAILED(hr))
1072     {
1073         *ppActual = NULL;
1074         if (pPreferred)
1075             IMemAllocator_Release(pPreferred);
1076     }
1077
1078     TRACE("-- %x\n", hr);
1079     return hr;
1080 }
1081
1082 /* we could improve the Request/WaitForNext mechanism by allowing out of order samples.
1083  * however, this would be quite complicated to do and may be a bit error prone */
1084 static HRESULT WINAPI FileAsyncReader_Request(IAsyncReader * iface, IMediaSample * pSample, DWORD_PTR dwUser)
1085 {
1086     HRESULT hr = S_OK;
1087     REFERENCE_TIME Start;
1088     REFERENCE_TIME Stop;
1089     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1090     LPBYTE pBuffer = NULL;
1091
1092     TRACE("(%p, %lx)\n", pSample, dwUser);
1093
1094     if (!pSample)
1095         return E_POINTER;
1096
1097     /* get start and stop positions in bytes */
1098     if (SUCCEEDED(hr))
1099         hr = IMediaSample_GetTime(pSample, &Start, &Stop);
1100
1101     if (SUCCEEDED(hr))
1102         hr = IMediaSample_GetPointer(pSample, &pBuffer);
1103
1104     EnterCriticalSection(&This->csList);
1105     if (This->bFlushing)
1106     {
1107         LeaveCriticalSection(&This->csList);
1108         return VFW_E_WRONG_STATE;
1109     }
1110
1111     if (SUCCEEDED(hr))
1112     {
1113         DWORD dwLength = (DWORD) BYTES_FROM_MEDIATIME(Stop - Start);
1114         DATAREQUEST *pDataRq;
1115         int x;
1116
1117         /* Try to insert above the waiting sample if possible */
1118         for (x = This->oldest_sample; x < This->samples; ++x)
1119         {
1120             if (!This->sample_list[x].pSample)
1121                 break;
1122         }
1123
1124         if (x >= This->samples)
1125             for (x = 0; x < This->oldest_sample; ++x)
1126             {
1127                 if (!This->sample_list[x].pSample)
1128                     break;
1129             }
1130
1131         /* There must be a sample we have found */
1132         assert(x < This->samples);
1133         ++This->queued_number;
1134
1135         pDataRq = This->sample_list + x;
1136
1137         pDataRq->ovl.u.s.Offset = (DWORD) BYTES_FROM_MEDIATIME(Start);
1138         pDataRq->ovl.u.s.OffsetHigh = (DWORD)(BYTES_FROM_MEDIATIME(Start) >> (sizeof(DWORD) * 8));
1139         pDataRq->dwUserData = dwUser;
1140
1141         /* we violate traditional COM rules here by maintaining
1142          * a reference to the sample, but not calling AddRef, but
1143          * that's what MSDN says to do */
1144         pDataRq->pSample = pSample;
1145
1146         /* this is definitely not how it is implemented on Win9x
1147          * as they do not support async reads on files, but it is
1148          * sooo much easier to use this than messing around with threads!
1149          */
1150         if (!ReadFile(This->hFile, pBuffer, dwLength, NULL, &pDataRq->ovl))
1151             hr = HRESULT_FROM_WIN32(GetLastError());
1152
1153         /* ERROR_IO_PENDING is not actually an error since this is what we want! */
1154         if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1155             hr = S_OK;
1156     }
1157
1158     LeaveCriticalSection(&This->csList);
1159
1160     TRACE("-- %x\n", hr);
1161     return hr;
1162 }
1163
1164 static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dwTimeout, IMediaSample ** ppSample, DWORD_PTR * pdwUser)
1165 {
1166     HRESULT hr = S_OK;
1167     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1168     DWORD buffer = ~0;
1169
1170     TRACE("(%u, %p, %p)\n", dwTimeout, ppSample, pdwUser);
1171
1172     *ppSample = NULL;
1173     *pdwUser = 0;
1174
1175     EnterCriticalSection(&This->csList);
1176     if (!This->bFlushing)
1177     {
1178         LONG oldest = This->oldest_sample;
1179
1180         if (!This->queued_number)
1181         {
1182             /* It could be that nothing is queued right now, but that can be fixed */
1183             WARN("Called without samples in queue and not flushing!!\n");
1184         }
1185         LeaveCriticalSection(&This->csList);
1186
1187         /* wait for an object to read, or time out */
1188         buffer = WaitForMultipleObjectsEx(This->samples+1, This->handle_list + oldest, FALSE, dwTimeout, TRUE);
1189
1190         EnterCriticalSection(&This->csList);
1191         if (buffer <= This->samples)
1192         {
1193             /* Re-scale the buffer back to normal */
1194             buffer += oldest;
1195
1196             /* Uh oh, we overshot the flusher handle, renormalize it back to 0..Samples-1 */
1197             if (buffer > This->samples)
1198                 buffer -= This->samples + 1;
1199             assert(buffer <= This->samples);
1200         }
1201
1202         if (buffer >= This->samples)
1203         {
1204             if (buffer != This->samples)
1205             {
1206                 FIXME("Returned: %u (%08x)\n", buffer, GetLastError());
1207                 hr = VFW_E_TIMEOUT;
1208             }
1209             else
1210                 hr = VFW_E_WRONG_STATE;
1211             buffer = ~0;
1212         }
1213         else
1214             --This->queued_number;
1215     }
1216
1217     if (This->bFlushing && buffer == ~0)
1218     {
1219         for (buffer = 0; buffer < This->samples; ++buffer)
1220         {
1221             if (This->sample_list[buffer].pSample)
1222             {
1223                 ResetEvent(This->handle_list[buffer]);
1224                 break;
1225             }
1226         }
1227         if (buffer == This->samples)
1228         {
1229             assert(!This->queued_number);
1230             hr = VFW_E_TIMEOUT;
1231         }
1232         else
1233         {
1234             --This->queued_number;
1235             hr = S_OK;
1236         }
1237     }
1238
1239     if (SUCCEEDED(hr))
1240     {
1241         REFERENCE_TIME rtStart, rtStop;
1242         REFERENCE_TIME rtSampleStart, rtSampleStop;
1243         DATAREQUEST *pDataRq = This->sample_list + buffer;
1244         DWORD dwBytes = 0;
1245
1246         /* get any errors */
1247         if (!This->bFlushing && !GetOverlappedResult(This->hFile, &pDataRq->ovl, &dwBytes, FALSE))
1248             hr = HRESULT_FROM_WIN32(GetLastError());
1249
1250         /* Return the sample no matter what so it can be destroyed */
1251         *ppSample = pDataRq->pSample;
1252         *pdwUser = pDataRq->dwUserData;
1253
1254         if (This->bFlushing)
1255             hr = VFW_E_WRONG_STATE;
1256
1257         if (FAILED(hr))
1258             dwBytes = 0;
1259
1260         /* Set the time on the sample */
1261         IMediaSample_SetActualDataLength(pDataRq->pSample, dwBytes);
1262
1263         rtStart = (DWORD64)pDataRq->ovl.u.s.Offset + ((DWORD64)pDataRq->ovl.u.s.OffsetHigh << 32);
1264         rtStart = MEDIATIME_FROM_BYTES(rtStart);
1265         rtStop = rtStart + MEDIATIME_FROM_BYTES(dwBytes);
1266
1267         IMediaSample_GetTime(pDataRq->pSample, &rtSampleStart, &rtSampleStop);
1268         assert(rtStart == rtSampleStart);
1269         assert(rtStop <= rtSampleStop);
1270
1271         IMediaSample_SetTime(pDataRq->pSample, &rtStart, &rtStop);
1272         assert(rtStart == rtSampleStart);
1273         if (hr == S_OK)
1274             assert(rtStop == rtSampleStop);
1275         else
1276             assert(rtStop == rtStart);
1277
1278         This->sample_list[buffer].pSample = NULL;
1279         assert(This->oldest_sample < This->samples);
1280
1281         if (buffer == This->oldest_sample)
1282         {
1283             LONG x;
1284             for (x = This->oldest_sample + 1; x < This->samples; ++x)
1285                 if (This->sample_list[x].pSample)
1286                     break;
1287             if (x >= This->samples)
1288                 for (x = 0; x < This->oldest_sample; ++x)
1289                     if (This->sample_list[x].pSample)
1290                         break;
1291             if (This->oldest_sample == x)
1292                 /* No samples found, reset to 0 */
1293                 x = 0;
1294             This->oldest_sample = x;
1295         }
1296     }
1297     LeaveCriticalSection(&This->csList);
1298
1299     TRACE("-- %x\n", hr);
1300     return hr;
1301 }
1302
1303 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer);
1304
1305 static HRESULT WINAPI FileAsyncReader_SyncReadAligned(IAsyncReader * iface, IMediaSample * pSample)
1306 {
1307     BYTE * pBuffer;
1308     REFERENCE_TIME tStart;
1309     REFERENCE_TIME tStop;
1310     HRESULT hr;
1311
1312     TRACE("(%p)\n", pSample);
1313
1314     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
1315
1316     if (SUCCEEDED(hr))
1317         hr = IMediaSample_GetPointer(pSample, &pBuffer);
1318
1319     if (SUCCEEDED(hr))
1320         hr = FileAsyncReader_SyncRead(iface,
1321             BYTES_FROM_MEDIATIME(tStart),
1322             (LONG) BYTES_FROM_MEDIATIME(tStop - tStart),
1323             pBuffer);
1324
1325     TRACE("-- %x\n", hr);
1326     return hr;
1327 }
1328
1329 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer)
1330 {
1331     OVERLAPPED ovl;
1332     HRESULT hr = S_OK;
1333     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1334
1335     TRACE("(%x%08x, %d, %p)\n", (ULONG)(llPosition >> 32), (ULONG)llPosition, lLength, pBuffer);
1336
1337     ZeroMemory(&ovl, sizeof(ovl));
1338
1339     ovl.hEvent = CreateEventW(NULL, 0, 0, NULL);
1340     /* NOTE: llPosition is the actual byte position to start reading from */
1341     ovl.u.s.Offset = (DWORD) llPosition;
1342     ovl.u.s.OffsetHigh = (DWORD) (llPosition >> (sizeof(DWORD) * 8));
1343
1344     if (!ReadFile(This->hFile, pBuffer, lLength, NULL, &ovl))
1345         hr = HRESULT_FROM_WIN32(GetLastError());
1346
1347     if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1348         hr = S_OK;
1349
1350     if (SUCCEEDED(hr))
1351     {
1352         DWORD dwBytesRead;
1353
1354         if (!GetOverlappedResult(This->hFile, &ovl, &dwBytesRead, TRUE))
1355             hr = HRESULT_FROM_WIN32(GetLastError());
1356     }
1357
1358     CloseHandle(ovl.hEvent);
1359
1360     TRACE("-- %x\n", hr);
1361     return hr;
1362 }
1363
1364 static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader * iface, LONGLONG * pTotal, LONGLONG * pAvailable)
1365 {
1366     DWORD dwSizeLow;
1367     DWORD dwSizeHigh;
1368     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1369
1370     TRACE("(%p, %p)\n", pTotal, pAvailable);
1371
1372     if (((dwSizeLow = GetFileSize(This->hFile, &dwSizeHigh)) == -1) &&
1373         (GetLastError() != NO_ERROR))
1374         return HRESULT_FROM_WIN32(GetLastError());
1375
1376     *pTotal = (LONGLONG)dwSizeLow | (LONGLONG)dwSizeHigh << (sizeof(DWORD) * 8);
1377
1378     *pAvailable = *pTotal;
1379
1380     return S_OK;
1381 }
1382
1383 static HRESULT WINAPI FileAsyncReader_BeginFlush(IAsyncReader * iface)
1384 {
1385     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1386
1387     TRACE("()\n");
1388
1389     EnterCriticalSection(&This->csList);
1390     This->bFlushing = TRUE;
1391     CancelIo(This->hFile);
1392     SetEvent(This->handle_list[This->samples]);
1393     LeaveCriticalSection(&This->csList);
1394
1395     return S_OK;
1396 }
1397
1398 static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
1399 {
1400     FileAsyncReader *This = impl_from_IAsyncReader(iface);
1401     int x;
1402
1403     TRACE("()\n");
1404
1405     EnterCriticalSection(&This->csList);
1406     ResetEvent(This->handle_list[This->samples]);
1407     This->bFlushing = FALSE;
1408     for (x = 0; x < This->samples; ++x)
1409         assert(!This->sample_list[x].pSample);
1410
1411     LeaveCriticalSection(&This->csList);
1412
1413     return S_OK;
1414 }
1415
1416 static const IAsyncReaderVtbl FileAsyncReader_Vtbl =
1417 {
1418     FileAsyncReader_QueryInterface,
1419     FileAsyncReader_AddRef,
1420     FileAsyncReader_Release,
1421     FileAsyncReader_RequestAllocator,
1422     FileAsyncReader_Request,
1423     FileAsyncReader_WaitForNext,
1424     FileAsyncReader_SyncReadAligned,
1425     FileAsyncReader_SyncRead,
1426     FileAsyncReader_Length,
1427     FileAsyncReader_BeginFlush,
1428     FileAsyncReader_EndFlush,
1429 };
1430
1431
1432 static HRESULT WINAPI AMFilterMiscFlags_QueryInterface(IAMFilterMiscFlags *iface, REFIID riid, void **ppv) {
1433     AsyncReader *This = impl_from_IAMFilterMiscFlags(iface);
1434     return IUnknown_QueryInterface((IUnknown*)This, riid, ppv);
1435 }
1436
1437 static ULONG WINAPI AMFilterMiscFlags_AddRef(IAMFilterMiscFlags *iface) {
1438     AsyncReader *This = impl_from_IAMFilterMiscFlags(iface);
1439     return IUnknown_AddRef((IUnknown*)This);
1440 }
1441
1442 static ULONG WINAPI AMFilterMiscFlags_Release(IAMFilterMiscFlags *iface) {
1443     AsyncReader *This = impl_from_IAMFilterMiscFlags(iface);
1444     return IUnknown_Release((IUnknown*)This);
1445 }
1446
1447 static ULONG WINAPI AMFilterMiscFlags_GetMiscFlags(IAMFilterMiscFlags *iface) {
1448     return AM_FILTER_MISC_FLAGS_IS_SOURCE;
1449 }
1450
1451 static const IAMFilterMiscFlagsVtbl IAMFilterMiscFlags_Vtbl = {
1452     AMFilterMiscFlags_QueryInterface,
1453     AMFilterMiscFlags_AddRef,
1454     AMFilterMiscFlags_Release,
1455     AMFilterMiscFlags_GetMiscFlags
1456 };