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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  19  */
  20
  21 #include "quartz_private.h"
  22
  23 #include "wine/debug.h"
  24 #include "wine/unicode.h"
  25 #include "pin.h"
  26 #include "uuids.h"
  27 #include "vfwmsgs.h"
  28 #include "winbase.h"
  29 #include "winreg.h"
  30 #include "ntstatus.h"
  31 #include <assert.h>
  32
  33 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  34
  35 static const WCHAR wszOutputPinName[] = { 'O','u','t','p','u','t',0 };
  36
  37 typedef struct AsyncReader
  38 {
  39     const struct IBaseFilterVtbl * lpVtbl;
  40     const struct IFileSourceFilterVtbl * lpVtblFSF;
  41
  42     ULONG refCount;
  43     FILTER_INFO filterInfo;
  44     FILTER_STATE state;
  45     CRITICAL_SECTION csFilter;
  46
  47     IPin * pOutputPin;
  48     LPOLESTR pszFileName;
  49     AM_MEDIA_TYPE * pmt;
  50 } AsyncReader;
  51
  52 static const struct IBaseFilterVtbl AsyncReader_Vtbl;
  53 static const struct IFileSourceFilterVtbl FileSource_Vtbl;
  54 static const struct IAsyncReaderVtbl FileAsyncReader_Vtbl;
  55
  56 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin);
  57
  58 #define _IFileSourceFilter_Offset ((int)(&(((AsyncReader*)0)->lpVtblFSF)))
  59 #define ICOM_THIS_From_IFileSourceFilter(impl, iface) impl* This = (impl*)(((char*)iface)-_IFileSourceFilter_Offset);
  60
  61 #define _IAsyncReader_Offset ((int)(&(((FileAsyncReader*)0)->lpVtblAR)))
  62 #define ICOM_THIS_From_IAsyncReader(impl, iface) impl* This = (impl*)(((char*)iface)-_IAsyncReader_Offset);
  63
  64 static HRESULT process_extensions(HKEY hkeyExtensions, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
  65 {
  66     /* FIXME: implement */
  67     return E_NOTIMPL;
  68 }
  69
  70 static unsigned char byte_from_hex_char(WCHAR wHex)
  71 {
  72     switch (tolowerW(wHex))
  73     {
  74     case '0':
  75     case '1':
  76     case '2':
  77     case '3':
  78     case '4':
  79     case '5':
  80     case '6':
  81     case '7':
  82     case '8':
  83     case '9':
  84         return wHex - '0';
  85     case 'a':
  86     case 'b':
  87     case 'c':
  88     case 'd':
  89     case 'e':
  90     case 'f':
  91         return wHex - 'a' + 10;
  92     default:
  93         return 0;
  94     }
  95 }
  96
  97 static HRESULT process_pattern_string(LPCWSTR wszPatternString, IAsyncReader * pReader)
  98 {
  99     ULONG ulOffset;
 100     ULONG ulBytes;
 101     BYTE * pbMask;
 102     BYTE * pbValue;
 103     BYTE * pbFile;
 104     HRESULT hr = S_OK;
 105     ULONG strpos;
 106
 107     TRACE("\t\tPattern string: %s\n", debugstr_w(wszPatternString));
 108
 109     /* format: "offset, bytestocompare, mask, value" */
 110
 111     ulOffset = strtolW(wszPatternString, NULL, 10);
 112
 113     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 114         return E_INVALIDARG;
 115
 116     wszPatternString++; /* skip ',' */
 117
 118     ulBytes = strtolW(wszPatternString, NULL, 10);
 119
 120     pbMask = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 121     pbValue = HeapAlloc(GetProcessHeap(), HEAP_ZERO_MEMORY, ulBytes);
 122     pbFile = HeapAlloc(GetProcessHeap(), 0, ulBytes);
 123
 124     /* default mask is match everything */
 125     memset(pbMask, 0xFF, ulBytes);
 126
 127     if (!(wszPatternString = strchrW(wszPatternString, ',')))
 128         hr = E_INVALIDARG;
 129
 130     wszPatternString++; /* skip ',' */
 131
 132     if (hr == S_OK)
 133     {
 134         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 135             ;
 136
 137         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 138         {
 139             if ((strpos % 2) == 1) /* odd numbered position */
 140                 pbMask[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 141             else
 142                 pbMask[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 143         }
 144
 145         if (!(wszPatternString = strchrW(wszPatternString, ',')))
 146             hr = E_INVALIDARG;
 147
 148         wszPatternString++; /* skip ',' */
 149     }
 150
 151     if (hr == S_OK)
 152     {
 153         for ( ; !isxdigitW(*wszPatternString) && (*wszPatternString != ','); wszPatternString++)
 154             ;
 155
 156         for (strpos = 0; isxdigitW(*wszPatternString) && (strpos/2 < ulBytes); wszPatternString++, strpos++)
 157         {
 158             if ((strpos % 2) == 1) /* odd numbered position */
 159                 pbValue[strpos / 2] |= byte_from_hex_char(*wszPatternString);
 160             else
 161                 pbValue[strpos / 2] = byte_from_hex_char(*wszPatternString) << 4;
 162         }
 163     }
 164
 165     if (hr == S_OK)
 166         hr = IAsyncReader_SyncRead(pReader, ulOffset, ulBytes, pbFile);
 167
 168     if (hr == S_OK)
 169     {
 170         ULONG i;
 171         for (i = 0; i < ulBytes; i++)
 172             if ((pbFile[i] & pbMask[i]) != pbValue[i])
 173             {
 174                 hr = S_FALSE;
 175                 break;
 176             }
 177     }
 178
 179     HeapFree(GetProcessHeap(), 0, pbMask);
 180     HeapFree(GetProcessHeap(), 0, pbValue);
 181     HeapFree(GetProcessHeap(), 0, pbFile);
 182
 183     /* if we encountered no errors with this string, and there is a following tuple, then we
 184      * have to match that as well to succeed */
 185     if ((hr == S_OK) && (wszPatternString = strchrW(wszPatternString, ',')))
 186         return process_pattern_string(wszPatternString + 1, pReader);
 187     else
 188         return hr;
 189 }
 190
 191 static HRESULT GetClassMediaFile(IAsyncReader * pReader, LPCOLESTR pszFileName, GUID * majorType, GUID * minorType)
 192 {
 193     HKEY hkeyMediaType = NULL;
 194     HRESULT hr = S_OK;
 195     BOOL bFound = FALSE;
 196     static const WCHAR wszMediaType[] = {'M','e','d','i','a',' ','T','y','p','e',0};
 197
 198     CopyMemory(majorType, &GUID_NULL, sizeof(*majorType));
 199     CopyMemory(minorType, &GUID_NULL, sizeof(*minorType));
 200
 201     hr = HRESULT_FROM_WIN32(RegOpenKeyExW(HKEY_CLASSES_ROOT, wszMediaType, 0, KEY_READ, &hkeyMediaType));
 202
 203     if (SUCCEEDED(hr))
 204     {
 205         DWORD indexMajor;
 206
 207         for (indexMajor = 0; !bFound; indexMajor++)
 208         {
 209             HKEY hkeyMajor;
 210             WCHAR wszMajorKeyName[CHARS_IN_GUID];
 211             DWORD dwKeyNameLength = sizeof(wszMajorKeyName) / sizeof(wszMajorKeyName[0]);
 212             static const WCHAR wszExtensions[] = {'E','x','t','e','n','s','i','o','n','s',0};
 213
 214             if (RegEnumKeyExW(hkeyMediaType, indexMajor, wszMajorKeyName, &dwKeyNameLength, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 215                 break;
 216             if (RegOpenKeyExW(hkeyMediaType, wszMajorKeyName, 0, KEY_READ, &hkeyMajor) != ERROR_SUCCESS)
 217                 break;
 218             TRACE("%s\n", debugstr_w(wszMajorKeyName));
 219             if (!strcmpW(wszExtensions, wszMajorKeyName))
 220             {
 221                 if (process_extensions(hkeyMajor, pszFileName, majorType, minorType) == S_OK)
 222                     bFound = TRUE;
 223             }
 224             else
 225             {
 226                 DWORD indexMinor;
 227
 228                 for (indexMinor = 0; !bFound; indexMinor++)
 229                 {
 230                     HKEY hkeyMinor;
 231                     WCHAR wszMinorKeyName[CHARS_IN_GUID];
 232                     DWORD dwMinorKeyNameLen = sizeof(wszMinorKeyName) / sizeof(wszMinorKeyName[0]);
 233                     DWORD maxValueLen;
 234                     DWORD indexValue;
 235
 236                     if (RegEnumKeyExW(hkeyMajor, indexMinor, wszMinorKeyName, &dwMinorKeyNameLen, NULL, NULL, NULL, NULL) != ERROR_SUCCESS)
 237                         break;
 238
 239                     if (RegOpenKeyExW(hkeyMajor, wszMinorKeyName, 0, KEY_READ, &hkeyMinor) != ERROR_SUCCESS)
 240                         break;
 241
 242                     TRACE("\t%s\n", debugstr_w(wszMinorKeyName));
 243
 244                     if (RegQueryInfoKeyW(hkeyMinor, NULL, NULL, NULL, NULL, NULL, NULL, NULL, NULL, &maxValueLen, NULL, NULL) != ERROR_SUCCESS)
 245                         break;
 246
 247                     for (indexValue = 0; !bFound; indexValue++)
 248                     {
 249                         DWORD dwType;
 250                         WCHAR wszValueName[14]; /* longest name we should encounter will be "Source Filter" */
 251                         LPWSTR wszPatternString = HeapAlloc(GetProcessHeap(), 0, maxValueLen);
 252                         DWORD dwValueNameLen = sizeof(wszValueName) / sizeof(wszValueName[0]); /* remember this is in chars */
 253                         DWORD dwDataLen = maxValueLen; /* remember this is in bytes */
 254                         static const WCHAR wszSourceFilter[] = {'S','o','u','r','c','e',' ','F','i','l','t','e','r',0};
 255                         LONG temp;
 256
 257                         if ((temp = RegEnumValueW(hkeyMinor, indexValue, wszValueName, &dwValueNameLen, NULL, &dwType, (LPBYTE)wszPatternString, &dwDataLen)) != ERROR_SUCCESS)
 258                         {
 259                             HeapFree(GetProcessHeap(), 0, wszPatternString);
 260                             break;
 261                         }
 262
 263                         /* if it is not the source filter value */
 264                         if (strcmpW(wszValueName, wszSourceFilter))
 265                         {
 266                             if (process_pattern_string(wszPatternString, pReader) == S_OK)
 267                             {
 268                                 if (SUCCEEDED(CLSIDFromString(wszMajorKeyName, majorType)) &&
 269                                     SUCCEEDED(CLSIDFromString(wszMinorKeyName, minorType)))
 270                                     bFound = TRUE;
 271                             }
 272                         }
 273                         HeapFree(GetProcessHeap(), 0, wszPatternString);
 274                     }
 275                     CloseHandle(hkeyMinor);
 276                 }
 277             }
 278             CloseHandle(hkeyMajor);
 279         }
 280     }
 281     CloseHandle(hkeyMediaType);
 282
 283     if (SUCCEEDED(hr) && !bFound)
 284     {
 285         ERR("Media class not found\n");
 286         hr = S_FALSE;
 287     }
 288     else if (bFound)
 289         TRACE("Found file's class: major = %s, subtype = %s\n", qzdebugstr_guid(majorType), qzdebugstr_guid(minorType));
 290
 291     return hr;
 292 }
 293
 294 HRESULT AsyncReader_create(IUnknown * pUnkOuter, LPVOID * ppv)
 295 {
 296     AsyncReader * pAsyncRead = CoTaskMemAlloc(sizeof(AsyncReader));
 297
 298     if (!pAsyncRead)
 299         return E_OUTOFMEMORY;
 300
 301     pAsyncRead->lpVtbl = &AsyncReader_Vtbl;
 302     pAsyncRead->lpVtblFSF = &FileSource_Vtbl;
 303     pAsyncRead->refCount = 1;
 304     pAsyncRead->filterInfo.achName[0] = '\0';
 305     pAsyncRead->filterInfo.pGraph = NULL;
 306     pAsyncRead->pOutputPin = NULL;
 307
 308     InitializeCriticalSection(&pAsyncRead->csFilter);
 309
 310     pAsyncRead->pszFileName = NULL;
 311     pAsyncRead->pmt = NULL;
 312
 313     *ppv = (LPVOID)pAsyncRead;
 314
 315     TRACE("-- created at %p\n", pAsyncRead);
 316
 317     return S_OK;
 318 }
 319
 320 /** IUnkown methods **/
 321
 322 static HRESULT WINAPI AsyncReader_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 323 {
 324     AsyncReader *This = (AsyncReader *)iface;
 325
 326     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 327
 328     *ppv = NULL;
 329
 330     if (IsEqualIID(riid, &IID_IUnknown))
 331         *ppv = (LPVOID)This;
 332     else if (IsEqualIID(riid, &IID_IPersist))
 333         *ppv = (LPVOID)This;
 334     else if (IsEqualIID(riid, &IID_IMediaFilter))
 335         *ppv = (LPVOID)This;
 336     else if (IsEqualIID(riid, &IID_IBaseFilter))
 337         *ppv = (LPVOID)This;
 338     else if (IsEqualIID(riid, &IID_IFileSourceFilter))
 339         *ppv = (LPVOID)(&This->lpVtblFSF);
 340
 341     if (*ppv)
 342     {
 343         IUnknown_AddRef((IUnknown *)(*ppv));
 344         return S_OK;
 345     }
 346
 347     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 348
 349     return E_NOINTERFACE;
 350 }
 351
 352 static ULONG WINAPI AsyncReader_AddRef(IBaseFilter * iface)
 353 {
 354     AsyncReader *This = (AsyncReader *)iface;
 355
 356     TRACE("()\n");
 357
 358     return InterlockedIncrement(&This->refCount);
 359 }
 360
 361 static ULONG WINAPI AsyncReader_Release(IBaseFilter * iface)
 362 {
 363     AsyncReader *This = (AsyncReader *)iface;
 364
 365     TRACE("()\n");
 366
 367     if (!InterlockedDecrement(&This->refCount))
 368     {
 369         if (This->pOutputPin)
 370             IPin_Release(This->pOutputPin);
 371         DeleteCriticalSection(&This->csFilter);
 372         This->lpVtbl = NULL;
 373         CoTaskMemFree(This);
 374         return 0;
 375     }
 376     else
 377         return This->refCount;
 378 }
 379
 380 /** IPersist methods **/
 381
 382 static HRESULT WINAPI AsyncReader_GetClassID(IBaseFilter * iface, CLSID * pClsid)
 383 {
 384     TRACE("(%p)\n", pClsid);
 385
 386     *pClsid = CLSID_AsyncReader;
 387
 388     return S_OK;
 389 }
 390
 391 /** IMediaFilter methods **/
 392
 393 static HRESULT WINAPI AsyncReader_Stop(IBaseFilter * iface)
 394 {
 395     AsyncReader *This = (AsyncReader *)iface;
 396
 397     TRACE("()\n");
 398
 399     This->state = State_Stopped;
 400
 401     return S_OK;
 402 }
 403
 404 static HRESULT WINAPI AsyncReader_Pause(IBaseFilter * iface)
 405 {
 406     AsyncReader *This = (AsyncReader *)iface;
 407
 408     TRACE("()\n");
 409
 410     This->state = State_Paused;
 411
 412     return S_OK;
 413 }
 414
 415 static HRESULT WINAPI AsyncReader_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 416 {
 417     AsyncReader *This = (AsyncReader *)iface;
 418
 419     TRACE("(%lx%08lx)\n", (ULONG)(tStart >> 32), (ULONG)tStart);
 420
 421     This->state = State_Running;
 422
 423     return S_OK;
 424 }
 425
 426 static HRESULT WINAPI AsyncReader_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState)
 427 {
 428     AsyncReader *This = (AsyncReader *)iface;
 429
 430     TRACE("(%lu, %p)\n", dwMilliSecsTimeout, pState);
 431
 432     *pState = This->state;
 433
 434     return S_OK;
 435 }
 436
 437 static HRESULT WINAPI AsyncReader_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
 438 {
 439 /*    AsyncReader *This = (AsyncReader *)iface;*/
 440
 441     TRACE("(%p)\n", pClock);
 442
 443     return S_OK;
 444 }
 445
 446 static HRESULT WINAPI AsyncReader_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
 447 {
 448 /*    AsyncReader *This = (AsyncReader *)iface;*/
 449
 450     TRACE("(%p)\n", ppClock);
 451
 452     return S_OK;
 453 }
 454
 455 /** IBaseFilter methods **/
 456
 457 static HRESULT WINAPI AsyncReader_EnumPins(IBaseFilter * iface, IEnumPins **ppEnum)
 458 {
 459     ENUMPINDETAILS epd;
 460     AsyncReader *This = (AsyncReader *)iface;
 461
 462     TRACE("(%p)\n", ppEnum);
 463
 464     epd.cPins = This->pOutputPin ? 1 : 0;
 465     epd.ppPins = &This->pOutputPin;
 466     return IEnumPinsImpl_Construct(&epd, ppEnum);
 467 }
 468
 469 static HRESULT WINAPI AsyncReader_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 470 {
 471     FIXME("(%s, %p)\n", debugstr_w(Id), ppPin);
 472
 473     return E_NOTIMPL;
 474 }
 475
 476 static HRESULT WINAPI AsyncReader_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
 477 {
 478     AsyncReader *This = (AsyncReader *)iface;
 479
 480     TRACE("(%p)\n", pInfo);
 481
 482     strcpyW(pInfo->achName, This->filterInfo.achName);
 483     pInfo->pGraph = This->filterInfo.pGraph;
 484
 485     if (pInfo->pGraph)
 486         IFilterGraph_AddRef(pInfo->pGraph);
 487
 488     return S_OK;
 489 }
 490
 491 static HRESULT WINAPI AsyncReader_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName)
 492 {
 493     AsyncReader *This = (AsyncReader *)iface;
 494
 495     TRACE("(%p, %s)\n", pGraph, debugstr_w(pName));
 496
 497     if (pName)
 498         strcpyW(This->filterInfo.achName, pName);
 499     else
 500         *This->filterInfo.achName = 0;
 501     This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
 502
 503     return S_OK;
 504 }
 505
 506 static HRESULT WINAPI AsyncReader_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
 507 {
 508     FIXME("(%p)\n", pVendorInfo);
 509
 510     return E_NOTIMPL;
 511 }
 512
 513 static const IBaseFilterVtbl AsyncReader_Vtbl =
 514 {
 515     AsyncReader_QueryInterface,
 516     AsyncReader_AddRef,
 517     AsyncReader_Release,
 518     AsyncReader_GetClassID,
 519     AsyncReader_Stop,
 520     AsyncReader_Pause,
 521     AsyncReader_Run,
 522     AsyncReader_GetState,
 523     AsyncReader_SetSyncSource,
 524     AsyncReader_GetSyncSource,
 525     AsyncReader_EnumPins,
 526     AsyncReader_FindPin,
 527     AsyncReader_QueryFilterInfo,
 528     AsyncReader_JoinFilterGraph,
 529     AsyncReader_QueryVendorInfo
 530 };
 531
 532 static HRESULT WINAPI FileSource_QueryInterface(IFileSourceFilter * iface, REFIID riid, LPVOID * ppv)
 533 {
 534     ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
 535
 536     return IBaseFilter_QueryInterface((IFileSourceFilter*)&This->lpVtbl, riid, ppv);
 537 }
 538
 539 static ULONG WINAPI FileSource_AddRef(IFileSourceFilter * iface)
 540 {
 541     ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
 542
 543     return IBaseFilter_AddRef((IFileSourceFilter*)&This->lpVtbl);
 544 }
 545
 546 static ULONG WINAPI FileSource_Release(IFileSourceFilter * iface)
 547 {
 548     ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
 549
 550     return IBaseFilter_Release((IFileSourceFilter*)&This->lpVtbl);
 551 }
 552
 553 static HRESULT WINAPI FileSource_Load(IFileSourceFilter * iface, LPCOLESTR pszFileName, const AM_MEDIA_TYPE * pmt)
 554 {
 555     HRESULT hr;
 556     HANDLE hFile;
 557     IAsyncReader * pReader = NULL;
 558     ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
 559
 560     TRACE("(%s, %p)\n", debugstr_w(pszFileName), pmt);
 561
 562     /* open file */
 563     /* FIXME: check the sharing values that native uses */
 564     hFile = CreateFileW(pszFileName, GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL);
 565
 566     if (hFile == INVALID_HANDLE_VALUE)
 567     {
 568         return HRESULT_FROM_WIN32(GetLastError());
 569     }
 570
 571     /* create pin */
 572     hr = FileAsyncReader_Construct(hFile, (IBaseFilter *)&This->lpVtbl, &This->csFilter, &This->pOutputPin);
 573
 574     if (SUCCEEDED(hr))
 575         hr = IPin_QueryInterface(This->pOutputPin, &IID_IAsyncReader, (LPVOID *)&pReader);
 576
 577     /* store file name & media type */
 578     if (SUCCEEDED(hr))
 579     {
 580         This->pszFileName = CoTaskMemAlloc((strlenW(pszFileName) + 1) * sizeof(WCHAR));
 581         strcpyW(This->pszFileName, pszFileName);
 582         This->pmt = CoTaskMemAlloc(sizeof(AM_MEDIA_TYPE));
 583         if (!pmt)
 584         {
 585             This->pmt->bFixedSizeSamples = TRUE;
 586             This->pmt->bTemporalCompression = FALSE;
 587             This->pmt->cbFormat = 0;
 588             This->pmt->pbFormat = NULL;
 589             This->pmt->pUnk = NULL;
 590             This->pmt->lSampleSize = 0;
 591             memcpy(&This->pmt->formattype, &FORMAT_None, sizeof(FORMAT_None));
 592             hr = GetClassMediaFile(pReader, pszFileName, &This->pmt->majortype, &This->pmt->subtype);
 593             if (FAILED(hr))
 594             {
 595                 CoTaskMemFree(This->pmt);
 596                 This->pmt = NULL;
 597             }
 598         }
 599         else
 600             CopyMediaType(This->pmt, pmt);
 601     }
 602
 603     if (pReader)
 604         IAsyncReader_Release(pReader);
 605
 606     if (FAILED(hr))
 607     {
 608         if (This->pOutputPin)
 609         {
 610             IPin_Release(This->pOutputPin);
 611             This->pOutputPin = NULL;
 612         }
 613         if (This->pszFileName)
 614         {
 615             CoTaskMemFree(This->pszFileName);
 616             This->pszFileName = NULL;
 617         }
 618         CloseHandle(hFile);
 619     }
 620
 621     /* FIXME: check return codes */
 622     return hr;
 623 }
 624
 625 static HRESULT WINAPI FileSource_GetCurFile(IFileSourceFilter * iface, LPOLESTR * ppszFileName, AM_MEDIA_TYPE * pmt)
 626 {
 627     ICOM_THIS_From_IFileSourceFilter(AsyncReader, iface);
 628
 629     TRACE("(%p, %p)\n", ppszFileName, pmt);
 630
 631     /* copy file name & media type if available, otherwise clear the outputs */
 632     if (This->pszFileName)
 633     {
 634         *ppszFileName = CoTaskMemAlloc((strlenW(This->pszFileName) + 1) * sizeof(WCHAR));
 635         strcpyW(*ppszFileName, This->pszFileName);
 636     }
 637     else
 638         *ppszFileName = NULL;
 639
 640     if (This->pmt)
 641     {
 642         CopyMediaType(pmt, This->pmt);
 643     }
 644     else
 645         ZeroMemory(pmt, sizeof(*pmt));
 646
 647     return S_OK;
 648 }
 649
 650 static const IFileSourceFilterVtbl FileSource_Vtbl =
 651 {
 652     FileSource_QueryInterface,
 653     FileSource_AddRef,
 654     FileSource_Release,
 655     FileSource_Load,
 656     FileSource_GetCurFile
 657 };
 658
 659
 660 /* the dwUserData passed back to user */
 661 typedef struct DATAREQUEST
 662 {
 663     IMediaSample * pSample; /* sample passed to us by user */
 664     DWORD_PTR dwUserData; /* user data passed to us */
 665     OVERLAPPED ovl; /* our overlapped structure */
 666
 667     struct DATAREQUEST * pNext; /* next data request in list */
 668 } DATAREQUEST;
 669
 670 void queue(DATAREQUEST * pHead, DATAREQUEST * pItem)
 671 {
 672     DATAREQUEST * pCurrent;
 673     for (pCurrent = pHead; pCurrent->pNext; pCurrent = pCurrent->pNext)
 674         ;
 675     pCurrent->pNext = pItem;
 676 }
 677
 678 typedef struct FileAsyncReader
 679 {
 680     OutputPin pin;
 681     const struct IAsyncReaderVtbl * lpVtblAR;
 682
 683     HANDLE hFile;
 684     HANDLE hEvent;
 685     BOOL bFlushing;
 686     DATAREQUEST * pHead; /* head of data request list */
 687     CRITICAL_SECTION csList; /* critical section to protect operations on list */
 688 } FileAsyncReader;
 689
 690 static HRESULT AcceptProcAFR(LPVOID iface, const AM_MEDIA_TYPE *pmt)
 691 {
 692     AsyncReader *This = (AsyncReader *)iface;
 693
 694     FIXME("(%p, %p)\n", iface, pmt);
 695
 696     if (IsEqualGUID(&pmt->majortype, &This->pmt->majortype) &&
 697         IsEqualGUID(&pmt->subtype, &This->pmt->subtype) &&
 698         IsEqualGUID(&pmt->formattype, &FORMAT_None))
 699         return S_OK;
 700
 701     return S_FALSE;
 702 }
 703
 704 /* overriden pin functions */
 705
 706 static HRESULT WINAPI FileAsyncReaderPin_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 707 {
 708     FileAsyncReader *This = (FileAsyncReader *)iface;
 709     TRACE("(%s, %p)\n", qzdebugstr_guid(riid), ppv);
 710
 711     *ppv = NULL;
 712
 713     if (IsEqualIID(riid, &IID_IUnknown))
 714         *ppv = (LPVOID)This;
 715     else if (IsEqualIID(riid, &IID_IPin))
 716         *ppv = (LPVOID)This;
 717     else if (IsEqualIID(riid, &IID_IAsyncReader))
 718         *ppv = (LPVOID)&This->lpVtblAR;
 719
 720     if (*ppv)
 721     {
 722         IUnknown_AddRef((IUnknown *)(*ppv));
 723         return S_OK;
 724     }
 725
 726     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 727
 728     return E_NOINTERFACE;
 729 }
 730
 731 static ULONG WINAPI FileAsyncReaderPin_Release(IPin * iface)
 732 {
 733     FileAsyncReader *This = (FileAsyncReader *)iface;
 734
 735     TRACE("()\n");
 736
 737     if (!InterlockedDecrement(&This->pin.pin.refCount))
 738     {
 739         DATAREQUEST * pCurrent;
 740         DATAREQUEST * pNext;
 741         for (pCurrent = This->pHead; pCurrent; pCurrent = pNext)
 742         {
 743             pNext = pCurrent->pNext;
 744             CoTaskMemFree(pCurrent);
 745         }
 746         CloseHandle(This->hFile);
 747         CloseHandle(This->hEvent);
 748         CoTaskMemFree(This);
 749         return 0;
 750     }
 751     return This->pin.pin.refCount;
 752 }
 753
 754 static HRESULT WINAPI FileAsyncReaderPin_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 755 {
 756     ENUMMEDIADETAILS emd;
 757     FileAsyncReader *This = (FileAsyncReader *)iface;
 758
 759     TRACE("(%p)\n", ppEnum);
 760
 761     emd.cMediaTypes = 1;
 762     emd.pMediaTypes = ((AsyncReader *)This->pin.pin.pinInfo.pFilter)->pmt;
 763
 764     return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
 765 }
 766
 767 static const IPinVtbl FileAsyncReaderPin_Vtbl =
 768 {
 769     FileAsyncReaderPin_QueryInterface,
 770     IPinImpl_AddRef,
 771     FileAsyncReaderPin_Release,
 772     OutputPin_Connect,
 773     OutputPin_ReceiveConnection,
 774     IPinImpl_Disconnect,
 775     IPinImpl_ConnectedTo,
 776     IPinImpl_ConnectionMediaType,
 777     IPinImpl_QueryPinInfo,
 778     IPinImpl_QueryDirection,
 779     IPinImpl_QueryId,
 780     IPinImpl_QueryAccept,
 781     FileAsyncReaderPin_EnumMediaTypes,
 782     IPinImpl_QueryInternalConnections,
 783     OutputPin_EndOfStream,
 784     OutputPin_BeginFlush,
 785     OutputPin_EndFlush,
 786     OutputPin_NewSegment
 787 };
 788
 789 /* Function called as a helper to IPin_Connect */
 790 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 791 /* this differs from standard OutputPin_ConnectSpecific only in that it
 792  * doesn't need the IMemInputPin interface on the receiving pin */
 793 static HRESULT FileAsyncReaderPin_ConnectSpecific(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 794 {
 795     OutputPin *This = (OutputPin *)iface;
 796     HRESULT hr;
 797
 798     TRACE("(%p, %p)\n", pReceivePin, pmt);
 799     dump_AM_MEDIA_TYPE(pmt);
 800
 801     /* FIXME: call queryacceptproc */
 802
 803     This->pin.pConnectedTo = pReceivePin;
 804     IPin_AddRef(pReceivePin);
 805     CopyMediaType(&This->pin.mtCurrent, pmt);
 806
 807     hr = IPin_ReceiveConnection(pReceivePin, iface, pmt);
 808
 809     if (FAILED(hr))
 810     {
 811         IPin_Release(This->pin.pConnectedTo);
 812         This->pin.pConnectedTo = NULL;
 813         DeleteMediaType(&This->pin.mtCurrent);
 814     }
 815
 816     TRACE(" -- %lx\n", hr);
 817     return hr;
 818 }
 819
 820 static HRESULT FileAsyncReader_Construct(HANDLE hFile, IBaseFilter * pBaseFilter, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 821 {
 822     FileAsyncReader * pPinImpl;
 823     PIN_INFO piOutput;
 824
 825     *ppPin = NULL;
 826
 827     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 828
 829     if (!pPinImpl)
 830         return E_OUTOFMEMORY;
 831
 832     piOutput.dir = PINDIR_OUTPUT;
 833     piOutput.pFilter = pBaseFilter;
 834     strcpyW(piOutput.achName, wszOutputPinName);
 835
 836     if (SUCCEEDED(OutputPin_Init(&piOutput, NULL, pBaseFilter, AcceptProcAFR, pCritSec, &pPinImpl->pin)))
 837     {
 838         pPinImpl->pin.pin.lpVtbl = &FileAsyncReaderPin_Vtbl;
 839         pPinImpl->lpVtblAR = &FileAsyncReader_Vtbl;
 840         pPinImpl->hFile = hFile;
 841         pPinImpl->hEvent = CreateEventW(NULL, 0, 0, NULL);
 842         pPinImpl->bFlushing = FALSE;
 843         pPinImpl->pHead = NULL;
 844         pPinImpl->pin.pConnectSpecific = FileAsyncReaderPin_ConnectSpecific;
 845         InitializeCriticalSection(&pPinImpl->csList);
 846
 847         *ppPin = (IPin *)(&pPinImpl->pin.pin.lpVtbl);
 848         return S_OK;
 849     }
 850     return E_FAIL;
 851 }
 852
 853 /* IAsyncReader */
 854
 855 static HRESULT WINAPI FileAsyncReader_QueryInterface(IAsyncReader * iface, REFIID riid, LPVOID * ppv)
 856 {
 857     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
 858
 859     return IPin_QueryInterface((IPin *)This, riid, ppv);
 860 }
 861
 862 static ULONG WINAPI FileAsyncReader_AddRef(IAsyncReader * iface)
 863 {
 864     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
 865
 866     return IPin_AddRef((IPin *)This);
 867 }
 868
 869 static ULONG WINAPI FileAsyncReader_Release(IAsyncReader * iface)
 870 {
 871     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
 872
 873     return IPin_Release((IPin *)This);
 874 }
 875
 876 #define DEF_ALIGNMENT 1
 877
 878 static HRESULT WINAPI FileAsyncReader_RequestAllocator(IAsyncReader * iface, IMemAllocator * pPreferred, ALLOCATOR_PROPERTIES * pProps, IMemAllocator ** ppActual)
 879 {
 880     HRESULT hr = S_OK;
 881
 882     TRACE("(%p, %p, %p)\n", pPreferred, pProps, ppActual);
 883
 884     if (!pProps->cbAlign || (pProps->cbAlign % DEF_ALIGNMENT) != 0)
 885         pProps->cbAlign = DEF_ALIGNMENT;
 886
 887     if (pPreferred)
 888     {
 889         ALLOCATOR_PROPERTIES PropsActual;
 890         hr = IMemAllocator_SetProperties(pPreferred, pProps, &PropsActual);
 891         /* FIXME: check we are still aligned */
 892         if (SUCCEEDED(hr))
 893         {
 894             IMemAllocator_AddRef(pPreferred);
 895             *ppActual = pPreferred;
 896             TRACE("FileAsyncReader_RequestAllocator -- %lx\n", hr);
 897             return S_OK;
 898         }
 899     }
 900
 901     pPreferred = NULL;
 902
 903     hr = CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC, &IID_IMemAllocator, (LPVOID *)&pPreferred);
 904
 905     if (SUCCEEDED(hr))
 906     {
 907         ALLOCATOR_PROPERTIES PropsActual;
 908         hr = IMemAllocator_SetProperties(pPreferred, pProps, &PropsActual);
 909         /* FIXME: check we are still aligned */
 910         if (SUCCEEDED(hr))
 911         {
 912             IMemAllocator_AddRef(pPreferred);
 913             *ppActual = pPreferred;
 914             TRACE("FileAsyncReader_RequestAllocator -- %lx\n", hr);
 915             return S_OK;
 916         }
 917     }
 918
 919     if (FAILED(hr))
 920     {
 921         *ppActual = NULL;
 922         if (pPreferred)
 923             IMemAllocator_Release(pPreferred);
 924     }
 925
 926     TRACE("-- %lx\n", hr);
 927     return hr;
 928 }
 929
 930 /* we could improve the Request/WaitForNext mechanism by allowing out of order samples.
 931  * however, this would be quite complicated to do and may be a bit error prone */
 932 static HRESULT WINAPI FileAsyncReader_Request(IAsyncReader * iface, IMediaSample * pSample, DWORD_PTR dwUser)
 933 {
 934     REFERENCE_TIME Start;
 935     REFERENCE_TIME Stop;
 936     DATAREQUEST * pDataRq;
 937     BYTE * pBuffer;
 938     HRESULT hr = S_OK;
 939     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
 940
 941     TRACE("(%p, %lx)\n", pSample, dwUser);
 942
 943     /* check flushing state */
 944     if (This->bFlushing)
 945         return VFW_E_WRONG_STATE;
 946
 947     if (!(pDataRq = CoTaskMemAlloc(sizeof(*pDataRq))))
 948         hr = E_OUTOFMEMORY;
 949
 950     /* get start and stop positions in bytes */
 951     if (SUCCEEDED(hr))
 952         hr = IMediaSample_GetTime(pSample, &Start, &Stop);
 953
 954     if (SUCCEEDED(hr))
 955         hr = IMediaSample_GetPointer(pSample, &pBuffer);
 956
 957     if (SUCCEEDED(hr))
 958     {
 959         DWORD dwLength = (DWORD) BYTES_FROM_MEDIATIME(Stop - Start);
 960
 961         pDataRq->ovl.Offset = (DWORD) BYTES_FROM_MEDIATIME(Start);
 962         pDataRq->ovl.OffsetHigh = (DWORD)(BYTES_FROM_MEDIATIME(Start) >> (sizeof(DWORD) * 8));
 963         pDataRq->ovl.hEvent = This->hEvent;
 964         pDataRq->dwUserData = dwUser;
 965         pDataRq->pNext = NULL;
 966         /* we violate traditional COM rules here by maintaining
 967          * a reference to the sample, but not calling AddRef, but
 968          * that's what MSDN says to do */
 969         pDataRq->pSample = pSample;
 970
 971         EnterCriticalSection(&This->csList);
 972         {
 973             if (This->pHead)
 974                 /* adds data request to end of list */
 975                 queue(This->pHead, pDataRq);
 976             else
 977                 This->pHead = pDataRq;
 978         }
 979         LeaveCriticalSection(&This->csList);
 980
 981         /* this is definitely not how it is implemented on Win9x
 982          * as they do not support async reads on files, but it is
 983          * sooo much easier to use this than messing around with threads!
 984          */
 985         if (!ReadFile(This->hFile, pBuffer, dwLength, NULL, &pDataRq->ovl))
 986             hr = HRESULT_FROM_WIN32(GetLastError());
 987
 988         /* ERROR_IO_PENDING is not actually an error since this is what we want! */
 989         if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
 990             hr = S_OK;
 991     }
 992
 993     if (FAILED(hr) && pDataRq)
 994     {
 995         EnterCriticalSection(&This->csList);
 996         {
 997             DATAREQUEST * pCurrent;
 998             for (pCurrent = This->pHead; pCurrent && pCurrent->pNext; pCurrent = pCurrent->pNext)
 999                 if (pCurrent->pNext == pDataRq)
1000                 {
1001                     pCurrent->pNext = pDataRq->pNext;
1002                     break;
1003                 }
1004         }
1005         LeaveCriticalSection(&This->csList);
1006         CoTaskMemFree(pDataRq);
1007     }
1008
1009     TRACE("-- %lx\n", hr);
1010     return hr;
1011 }
1012
1013 static HRESULT WINAPI FileAsyncReader_WaitForNext(IAsyncReader * iface, DWORD dwTimeout, IMediaSample ** ppSample, DWORD_PTR * pdwUser)
1014 {
1015     HRESULT hr = S_OK;
1016     DATAREQUEST * pDataRq = NULL;
1017     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
1018
1019     TRACE("(%lu, %p, %p)\n", dwTimeout, ppSample, pdwUser);
1020
1021     /* FIXME: we could do with improving this by waiting for an array of event handles
1022      * and then determining which one finished and removing that from the list, otherwise
1023      * we will end up waiting for longer than we should do, if a later request finishes
1024      * before an earlier one */
1025
1026     *ppSample = NULL;
1027     *pdwUser = 0;
1028
1029     /* we return immediately if flushing */
1030     if (This->bFlushing)
1031         hr = VFW_E_WRONG_STATE;
1032
1033     if (SUCCEEDED(hr))
1034     {
1035         /* wait for the read to finish or timeout */
1036         if (WaitForSingleObject(This->hEvent, dwTimeout) == WAIT_TIMEOUT)
1037             hr = VFW_E_TIMEOUT;
1038     }
1039     if (SUCCEEDED(hr))
1040     {
1041         EnterCriticalSection(&This->csList);
1042         {
1043             pDataRq = This->pHead;
1044             if (pDataRq == NULL)
1045                 hr = E_FAIL;
1046             else
1047                 This->pHead = pDataRq->pNext;
1048         }
1049         LeaveCriticalSection(&This->csList);
1050     }
1051
1052     if (SUCCEEDED(hr))
1053     {
1054         DWORD dwBytes;
1055         /* get any errors */
1056         if (!GetOverlappedResult(This->hFile, &pDataRq->ovl, &dwBytes, FALSE))
1057             hr = HRESULT_FROM_WIN32(GetLastError());
1058     }
1059
1060     if (SUCCEEDED(hr))
1061     {
1062         *ppSample = pDataRq->pSample;
1063         *pdwUser = pDataRq->dwUserData;
1064     }
1065
1066     /* clean up */
1067     if (pDataRq)
1068     {
1069         /* no need to close event handle since we will close it when the pin is destroyed */
1070         CoTaskMemFree(pDataRq);
1071     }
1072
1073     TRACE("-- %lx\n", hr);
1074     return hr;
1075 }
1076
1077 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer);
1078
1079 static HRESULT WINAPI FileAsyncReader_SyncReadAligned(IAsyncReader * iface, IMediaSample * pSample)
1080 {
1081     BYTE * pBuffer;
1082     REFERENCE_TIME tStart;
1083     REFERENCE_TIME tStop;
1084     HRESULT hr;
1085
1086     TRACE("(%p)\n", pSample);
1087
1088     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
1089
1090     if (SUCCEEDED(hr))
1091         hr = IMediaSample_GetPointer(pSample, &pBuffer);
1092
1093     if (SUCCEEDED(hr))
1094         hr = FileAsyncReader_SyncRead(iface,
1095             BYTES_FROM_MEDIATIME(tStart),
1096             (LONG) BYTES_FROM_MEDIATIME(tStop - tStart),
1097             pBuffer);
1098
1099     TRACE("-- %lx\n", hr);
1100     return hr;
1101 }
1102
1103 static HRESULT WINAPI FileAsyncReader_SyncRead(IAsyncReader * iface, LONGLONG llPosition, LONG lLength, BYTE * pBuffer)
1104 {
1105     OVERLAPPED ovl;
1106     HRESULT hr = S_OK;
1107     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
1108
1109     TRACE("(%lx%08lx, %ld, %p)\n", (ULONG)(llPosition >> 32), (ULONG)llPosition, lLength, pBuffer);
1110
1111     ZeroMemory(&ovl, sizeof(ovl));
1112
1113     ovl.hEvent = CreateEventW(NULL, 0, 0, NULL);
1114     /* NOTE: llPosition is the actual byte position to start reading from */
1115     ovl.Offset = (DWORD) llPosition;
1116     ovl.OffsetHigh = (DWORD) (llPosition >> (sizeof(DWORD) * 8));
1117
1118     if (!ReadFile(This->hFile, pBuffer, lLength, NULL, &ovl))
1119         hr = HRESULT_FROM_WIN32(GetLastError());
1120
1121     if (hr == HRESULT_FROM_WIN32(ERROR_IO_PENDING))
1122         hr = S_OK;
1123
1124     if (SUCCEEDED(hr))
1125     {
1126         DWORD dwBytesRead;
1127
1128         if (!GetOverlappedResult(This->hFile, &ovl, &dwBytesRead, TRUE))
1129             hr = HRESULT_FROM_WIN32(GetLastError());
1130     }
1131
1132     CloseHandle(ovl.hEvent);
1133
1134     TRACE("-- %lx\n", hr);
1135     return hr;
1136 }
1137
1138 static HRESULT WINAPI FileAsyncReader_Length(IAsyncReader * iface, LONGLONG * pTotal, LONGLONG * pAvailable)
1139 {
1140     DWORD dwSizeLow;
1141     DWORD dwSizeHigh;
1142     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
1143
1144     TRACE("(%p, %p)\n", pTotal, pAvailable);
1145
1146     if (((dwSizeLow = GetFileSize(This->hFile, &dwSizeHigh)) == -1) &&
1147         (GetLastError() != NO_ERROR))
1148         return HRESULT_FROM_WIN32(GetLastError());
1149
1150     *pTotal = (LONGLONG)dwSizeLow | (LONGLONG)dwSizeHigh << (sizeof(DWORD) * 8);
1151
1152     *pAvailable = *pTotal;
1153
1154     return S_OK;
1155 }
1156
1157 static HRESULT WINAPI FileAsyncReader_BeginFlush(IAsyncReader * iface)
1158 {
1159     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
1160
1161     TRACE("()\n");
1162
1163     This->bFlushing = TRUE;
1164     CancelIo(This->hFile);
1165     SetEvent(This->hEvent);
1166
1167     /* FIXME: free list */
1168
1169     return S_OK;
1170 }
1171
1172 static HRESULT WINAPI FileAsyncReader_EndFlush(IAsyncReader * iface)
1173 {
1174     ICOM_THIS_From_IAsyncReader(FileAsyncReader, iface);
1175
1176     TRACE("()\n");
1177
1178     This->bFlushing = FALSE;
1179
1180     return S_OK;
1181 }
1182
1183 static const IAsyncReaderVtbl FileAsyncReader_Vtbl =
1184 {
1185     FileAsyncReader_QueryInterface,
1186     FileAsyncReader_AddRef,
1187     FileAsyncReader_Release,
1188     FileAsyncReader_RequestAllocator,
1189     FileAsyncReader_Request,
1190     FileAsyncReader_WaitForNext,
1191     FileAsyncReader_SyncReadAligned,
1192     FileAsyncReader_SyncRead,
1193     FileAsyncReader_Length,
1194     FileAsyncReader_BeginFlush,
1195     FileAsyncReader_EndFlush,
1196 };