dlls/quartz/transform.c

   1 /*
   2  * Transform Filter (Base for decoders, etc...)
   3  *
   4  * Copyright 2005 Christian Costa
   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 #include "config.h"
  22
  23 #include "quartz_private.h"
  24 #include "control_private.h"
  25 #include "pin.h"
  26
  27 #include "uuids.h"
  28 #include "aviriff.h"
  29 #include "mmreg.h"
  30 #include "vfwmsgs.h"
  31 #include "amvideo.h"
  32 #include "windef.h"
  33 #include "winbase.h"
  34 #include "dshow.h"
  35 #include "strmif.h"
  36 #include "vfwmsgs.h"
  37 #include "evcode.h"
  38 #include "vfw.h"
  39
  40 #include <assert.h>
  41
  42 #include "wine/unicode.h"
  43 #include "wine/debug.h"
  44
  45 #include "transform.h"
  46
  47 WINE_DEFAULT_DEBUG_CHANNEL(quartz);
  48
  49 static const WCHAR wcsInputPinName[] = {'i','n','p','u','t',' ','p','i','n',0};
  50 static const WCHAR wcsOutputPinName[] = {'o','u','t','p','u','t',' ','p','i','n',0};
  51
  52 static const IBaseFilterVtbl TransformFilter_Vtbl;
  53 static const IPinVtbl TransformFilter_InputPin_Vtbl;
  54 static const IMemInputPinVtbl MemInputPin_Vtbl;
  55 static const IPinVtbl TransformFilter_OutputPin_Vtbl;
  56
  57 static HRESULT TransformFilter_Sample(LPVOID iface, IMediaSample * pSample)
  58 {
  59     TransformFilterImpl *This = (TransformFilterImpl *)iface;
  60     LPBYTE pbSrcStream = NULL;
  61     long cbSrcStream = 0;
  62     REFERENCE_TIME tStart, tStop;
  63     HRESULT hr;
  64
  65     TRACE("%p %p\n", iface, pSample);
  66
  67     hr = IMediaSample_GetPointer(pSample, &pbSrcStream);
  68     if (FAILED(hr))
  69     {
  70         ERR("Cannot get pointer to sample data (%x)\n", hr);
  71         return hr;
  72     }
  73
  74     hr = IMediaSample_GetTime(pSample, &tStart, &tStop);
  75     if (FAILED(hr))
  76         ERR("Cannot get sample time (%x)\n", hr);
  77
  78     cbSrcStream = IMediaSample_GetActualDataLength(pSample);
  79
  80     TRACE("Sample data ptr = %p, size = %ld\n", pbSrcStream, cbSrcStream);
  81
  82 #if 0 /* For debugging purpose */
  83     {
  84         int i;
  85         for(i = 0; i < cbSrcStream; i++)
  86         {
  87             if ((i!=0) && !(i%16))
  88                 TRACE("\n");
  89             TRACE("%02x ", pbSrcStream[i]);
  90         }
  91         TRACE("\n");
  92     }
  93 #endif
  94
  95     This->pFuncsTable->pfnProcessSampleData(This, pbSrcStream, cbSrcStream);
  96
  97     return S_OK;
  98 }
  99
 100 static HRESULT TransformFilter_Input_QueryAccept(LPVOID iface, const AM_MEDIA_TYPE * pmt)
 101 {
 102     TransformFilterImpl* This = (TransformFilterImpl*)iface;
 103     TRACE("%p\n", iface);
 104     dump_AM_MEDIA_TYPE(pmt);
 105
 106     return This->pFuncsTable->pfnConnectInput(This, pmt);
 107 }
 108
 109
 110 static HRESULT TransformFilter_Output_QueryAccept(LPVOID iface, const AM_MEDIA_TYPE * pmt)
 111 {
 112     TransformFilterImpl* pTransformFilter = (TransformFilterImpl*)iface;
 113     AM_MEDIA_TYPE* outpmt = &((OutputPin*)pTransformFilter->ppPins[1])->pin.mtCurrent;
 114     TRACE("%p\n", iface);
 115
 116     if (IsEqualIID(&pmt->majortype, &outpmt->majortype) && IsEqualIID(&pmt->subtype, &outpmt->subtype))
 117         return S_OK;
 118     return S_FALSE;
 119 }
 120
 121 static HRESULT TransformFilter_InputPin_Construct(const PIN_INFO * pPinInfo, SAMPLEPROC pSampleProc, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 122 {
 123     InputPin * pPinImpl;
 124
 125     *ppPin = NULL;
 126
 127     if (pPinInfo->dir != PINDIR_INPUT)
 128     {
 129         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
 130         return E_INVALIDARG;
 131     }
 132
 133     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 134
 135     if (!pPinImpl)
 136         return E_OUTOFMEMORY;
 137
 138     if (SUCCEEDED(InputPin_Init(pPinInfo, pSampleProc, pUserData, pQueryAccept, pCritSec, pPinImpl)))
 139     {
 140         pPinImpl->pin.lpVtbl = &TransformFilter_InputPin_Vtbl;
 141         pPinImpl->lpVtblMemInput = &MemInputPin_Vtbl;
 142
 143         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 144         return S_OK;
 145     }
 146     return E_FAIL;
 147 }
 148
 149 static HRESULT TransformFilter_OutputPin_Construct(const PIN_INFO * pPinInfo, ALLOCATOR_PROPERTIES *props, LPVOID pUserData, QUERYACCEPTPROC pQueryAccept, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 150 {
 151     OutputPin * pPinImpl;
 152
 153     *ppPin = NULL;
 154
 155     if (pPinInfo->dir != PINDIR_OUTPUT)
 156     {
 157         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 158         return E_INVALIDARG;
 159     }
 160
 161     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
 162
 163     if (!pPinImpl)
 164         return E_OUTOFMEMORY;
 165
 166     if (SUCCEEDED(OutputPin_Init(pPinInfo, props, pUserData, pQueryAccept, pCritSec, pPinImpl)))
 167     {
 168         pPinImpl->pin.lpVtbl = &TransformFilter_OutputPin_Vtbl;
 169
 170         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 171         return S_OK;
 172     }
 173     return E_FAIL;
 174 }
 175
 176 HRESULT TransformFilter_Create(TransformFilterImpl* pTransformFilter, const CLSID* pClsid, const TransformFuncsTable* pFuncsTable)
 177 {
 178     HRESULT hr;
 179     PIN_INFO piInput;
 180     PIN_INFO piOutput;
 181
 182     /* pTransformFilter is already allocated */
 183     pTransformFilter->clsid = *pClsid;
 184     pTransformFilter->pFuncsTable = pFuncsTable;
 185
 186     pTransformFilter->lpVtbl = &TransformFilter_Vtbl;
 187
 188     pTransformFilter->refCount = 1;
 189     InitializeCriticalSection(&pTransformFilter->csFilter);
 190     pTransformFilter->csFilter.DebugInfo->Spare[0] = (DWORD_PTR)(__FILE__ ": TransformFilterImpl.csFilter");
 191     pTransformFilter->state = State_Stopped;
 192     pTransformFilter->pClock = NULL;
 193     ZeroMemory(&pTransformFilter->filterInfo, sizeof(FILTER_INFO));
 194
 195     pTransformFilter->ppPins = CoTaskMemAlloc(2 * sizeof(IPin *));
 196
 197     /* construct input pin */
 198     piInput.dir = PINDIR_INPUT;
 199     piInput.pFilter = (IBaseFilter *)pTransformFilter;
 200     lstrcpynW(piInput.achName, wcsInputPinName, sizeof(piInput.achName) / sizeof(piInput.achName[0]));
 201     piOutput.dir = PINDIR_OUTPUT;
 202     piOutput.pFilter = (IBaseFilter *)pTransformFilter;
 203     lstrcpynW(piOutput.achName, wcsOutputPinName, sizeof(piOutput.achName) / sizeof(piOutput.achName[0]));
 204
 205     hr = TransformFilter_InputPin_Construct(&piInput, TransformFilter_Sample, pTransformFilter, TransformFilter_Input_QueryAccept, &pTransformFilter->csFilter, &pTransformFilter->ppPins[0]);
 206
 207     if (SUCCEEDED(hr))
 208     {
 209         ALLOCATOR_PROPERTIES props;
 210         props.cbAlign = 1;
 211         props.cbPrefix = 0;
 212         props.cbBuffer = 0; /* Will be updated at connection time */
 213         props.cBuffers = 2;
 214
 215         hr = TransformFilter_OutputPin_Construct(&piOutput, &props, pTransformFilter, TransformFilter_Output_QueryAccept, &pTransformFilter->csFilter, &pTransformFilter->ppPins[1]);
 216
 217         if (FAILED(hr))
 218             ERR("Cannot create output pin (%x)\n", hr);
 219     }
 220     else
 221     {
 222         CoTaskMemFree(pTransformFilter->ppPins);
 223         pTransformFilter->csFilter.DebugInfo->Spare[0] = 0;
 224         DeleteCriticalSection(&pTransformFilter->csFilter);
 225         CoTaskMemFree(pTransformFilter);
 226     }
 227
 228     return hr;
 229 }
 230
 231 static HRESULT WINAPI TransformFilter_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 232 {
 233     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 234     TRACE("(%p/%p)->(%s, %p)\n", This, iface, qzdebugstr_guid(riid), ppv);
 235
 236     *ppv = NULL;
 237
 238     if (IsEqualIID(riid, &IID_IUnknown))
 239         *ppv = (LPVOID)This;
 240     else if (IsEqualIID(riid, &IID_IPersist))
 241         *ppv = (LPVOID)This;
 242     else if (IsEqualIID(riid, &IID_IMediaFilter))
 243         *ppv = (LPVOID)This;
 244     else if (IsEqualIID(riid, &IID_IBaseFilter))
 245         *ppv = (LPVOID)This;
 246
 247     if (*ppv)
 248     {
 249         IUnknown_AddRef((IUnknown *)(*ppv));
 250         return S_OK;
 251     }
 252
 253     FIXME("No interface for %s!\n", qzdebugstr_guid(riid));
 254
 255     return E_NOINTERFACE;
 256 }
 257
 258 static ULONG WINAPI TransformFilter_AddRef(IBaseFilter * iface)
 259 {
 260     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 261     ULONG refCount = InterlockedIncrement(&This->refCount);
 262
 263     TRACE("(%p/%p)->() AddRef from %d\n", This, iface, refCount - 1);
 264
 265     return refCount;
 266 }
 267
 268 static ULONG WINAPI TransformFilter_Release(IBaseFilter * iface)
 269 {
 270     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 271     ULONG refCount = InterlockedDecrement(&This->refCount);
 272
 273     TRACE("(%p/%p)->() Release from %d\n", This, iface, refCount + 1);
 274
 275     if (!refCount)
 276     {
 277         ULONG i;
 278
 279         This->csFilter.DebugInfo->Spare[0] = 0;
 280         DeleteCriticalSection(&This->csFilter);
 281
 282         if (This->pClock)
 283             IReferenceClock_Release(This->pClock);
 284
 285         for (i = 0; i < 2; i++)
 286             IPin_Release(This->ppPins[i]);
 287
 288         CoTaskMemFree(This->ppPins);
 289         This->lpVtbl = NULL;
 290
 291         This->pFuncsTable->pfnCleanup(This);
 292
 293         TRACE("Destroying transform filter\n");
 294         CoTaskMemFree(This);
 295
 296         return 0;
 297     }
 298     else
 299         return refCount;
 300 }
 301
 302 /** IPersist methods **/
 303
 304 static HRESULT WINAPI TransformFilter_GetClassID(IBaseFilter * iface, CLSID * pClsid)
 305 {
 306     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 307
 308     TRACE("(%p/%p)->(%p)\n", This, iface, pClsid);
 309
 310     *pClsid = This->clsid;
 311
 312     return S_OK;
 313 }
 314
 315 /** IMediaFilter methods **/
 316
 317 static HRESULT WINAPI TransformFilter_Stop(IBaseFilter * iface)
 318 {
 319     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 320
 321     TRACE("(%p/%p)\n", This, iface);
 322
 323     EnterCriticalSection(&This->csFilter);
 324     {
 325         This->state = State_Stopped;
 326         if (This->pFuncsTable->pfnProcessEnd)
 327             This->pFuncsTable->pfnProcessEnd(This);
 328     }
 329     LeaveCriticalSection(&This->csFilter);
 330
 331     return S_OK;
 332 }
 333
 334 static HRESULT WINAPI TransformFilter_Pause(IBaseFilter * iface)
 335 {
 336     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 337
 338     TRACE("(%p/%p)->()\n", This, iface);
 339
 340     EnterCriticalSection(&This->csFilter);
 341     {
 342         This->state = State_Paused;
 343     }
 344     LeaveCriticalSection(&This->csFilter);
 345
 346     return S_OK;
 347 }
 348
 349 static HRESULT WINAPI TransformFilter_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 350 {
 351     HRESULT hr = S_OK;
 352     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 353
 354     TRACE("(%p/%p)->(%s)\n", This, iface, wine_dbgstr_longlong(tStart));
 355
 356     EnterCriticalSection(&This->csFilter);
 357     {
 358         This->rtStreamStart = tStart;
 359         This->state = State_Running;
 360         OutputPin_CommitAllocator((OutputPin *)This->ppPins[1]);
 361         if (This->pFuncsTable->pfnProcessBegin)
 362             This->pFuncsTable->pfnProcessBegin(This);
 363     }
 364     LeaveCriticalSection(&This->csFilter);
 365
 366     return hr;
 367 }
 368
 369 static HRESULT WINAPI TransformFilter_GetState(IBaseFilter * iface, DWORD dwMilliSecsTimeout, FILTER_STATE *pState)
 370 {
 371     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 372
 373     TRACE("(%p/%p)->(%d, %p)\n", This, iface, dwMilliSecsTimeout, pState);
 374
 375     EnterCriticalSection(&This->csFilter);
 376     {
 377         *pState = This->state;
 378     }
 379     LeaveCriticalSection(&This->csFilter);
 380
 381     return S_OK;
 382 }
 383
 384 static HRESULT WINAPI TransformFilter_SetSyncSource(IBaseFilter * iface, IReferenceClock *pClock)
 385 {
 386     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 387
 388     TRACE("(%p/%p)->(%p)\n", This, iface, pClock);
 389
 390     EnterCriticalSection(&This->csFilter);
 391     {
 392         if (This->pClock)
 393             IReferenceClock_Release(This->pClock);
 394         This->pClock = pClock;
 395         if (This->pClock)
 396             IReferenceClock_AddRef(This->pClock);
 397     }
 398     LeaveCriticalSection(&This->csFilter);
 399
 400     return S_OK;
 401 }
 402
 403 static HRESULT WINAPI TransformFilter_GetSyncSource(IBaseFilter * iface, IReferenceClock **ppClock)
 404 {
 405     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 406
 407     TRACE("(%p/%p)->(%p)\n", This, iface, ppClock);
 408
 409     EnterCriticalSection(&This->csFilter);
 410     {
 411         *ppClock = This->pClock;
 412         IReferenceClock_AddRef(This->pClock);
 413     }
 414     LeaveCriticalSection(&This->csFilter);
 415
 416     return S_OK;
 417 }
 418
 419 /** IBaseFilter implementation **/
 420
 421 static HRESULT WINAPI TransformFilter_EnumPins(IBaseFilter * iface, IEnumPins **ppEnum)
 422 {
 423     ENUMPINDETAILS epd;
 424     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 425
 426     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 427
 428     epd.cPins = 2; /* input and output pins */
 429     epd.ppPins = This->ppPins;
 430     return IEnumPinsImpl_Construct(&epd, ppEnum);
 431 }
 432
 433 static HRESULT WINAPI TransformFilter_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 434 {
 435     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 436
 437     TRACE("(%p/%p)->(%p,%p)\n", This, iface, debugstr_w(Id), ppPin);
 438
 439     return E_NOTIMPL;
 440 }
 441
 442 static HRESULT WINAPI TransformFilter_QueryFilterInfo(IBaseFilter * iface, FILTER_INFO *pInfo)
 443 {
 444     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 445
 446     TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
 447
 448     strcpyW(pInfo->achName, This->filterInfo.achName);
 449     pInfo->pGraph = This->filterInfo.pGraph;
 450
 451     if (pInfo->pGraph)
 452         IFilterGraph_AddRef(pInfo->pGraph);
 453
 454     return S_OK;
 455 }
 456
 457 static HRESULT WINAPI TransformFilter_JoinFilterGraph(IBaseFilter * iface, IFilterGraph *pGraph, LPCWSTR pName)
 458 {
 459     HRESULT hr = S_OK;
 460     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 461
 462     TRACE("(%p/%p)->(%p, %s)\n", This, iface, pGraph, debugstr_w(pName));
 463
 464     EnterCriticalSection(&This->csFilter);
 465     {
 466         if (pName)
 467             strcpyW(This->filterInfo.achName, pName);
 468         else
 469             *This->filterInfo.achName = '\0';
 470         This->filterInfo.pGraph = pGraph; /* NOTE: do NOT increase ref. count */
 471     }
 472     LeaveCriticalSection(&This->csFilter);
 473
 474     return hr;
 475 }
 476
 477 static HRESULT WINAPI TransformFilter_QueryVendorInfo(IBaseFilter * iface, LPWSTR *pVendorInfo)
 478 {
 479     TransformFilterImpl *This = (TransformFilterImpl *)iface;
 480     TRACE("(%p/%p)->(%p)\n", This, iface, pVendorInfo);
 481     return E_NOTIMPL;
 482 }
 483
 484 static const IBaseFilterVtbl TransformFilter_Vtbl =
 485 {
 486     TransformFilter_QueryInterface,
 487     TransformFilter_AddRef,
 488     TransformFilter_Release,
 489     TransformFilter_GetClassID,
 490     TransformFilter_Stop,
 491     TransformFilter_Pause,
 492     TransformFilter_Run,
 493     TransformFilter_GetState,
 494     TransformFilter_SetSyncSource,
 495     TransformFilter_GetSyncSource,
 496     TransformFilter_EnumPins,
 497     TransformFilter_FindPin,
 498     TransformFilter_QueryFilterInfo,
 499     TransformFilter_JoinFilterGraph,
 500     TransformFilter_QueryVendorInfo
 501 };
 502
 503 static HRESULT WINAPI TransformFilter_InputPin_EndOfStream(IPin * iface)
 504 {
 505     InputPin* This = (InputPin*) iface;
 506     TransformFilterImpl* pTransform;
 507     IPin* ppin;
 508     HRESULT hr;
 509
 510     TRACE("(%p)->()\n", iface);
 511
 512     /* Since we process samples synchronously, just forward notification downstream */
 513     pTransform = (TransformFilterImpl*)This->pin.pinInfo.pFilter;
 514     if (!pTransform)
 515         hr = E_FAIL;
 516     else
 517         hr = IPin_ConnectedTo(pTransform->ppPins[1], &ppin);
 518     if (SUCCEEDED(hr))
 519     {
 520         hr = IPin_EndOfStream(ppin);
 521         IPin_Release(ppin);
 522     }
 523
 524     if (FAILED(hr))
 525         ERR("%x\n", hr);
 526     return hr;
 527 }
 528
 529 static const IPinVtbl TransformFilter_InputPin_Vtbl =
 530 {
 531     InputPin_QueryInterface,
 532     IPinImpl_AddRef,
 533     InputPin_Release,
 534     InputPin_Connect,
 535     InputPin_ReceiveConnection,
 536     IPinImpl_Disconnect,
 537     IPinImpl_ConnectedTo,
 538     IPinImpl_ConnectionMediaType,
 539     IPinImpl_QueryPinInfo,
 540     IPinImpl_QueryDirection,
 541     IPinImpl_QueryId,
 542     IPinImpl_QueryAccept,
 543     IPinImpl_EnumMediaTypes,
 544     IPinImpl_QueryInternalConnections,
 545     TransformFilter_InputPin_EndOfStream,
 546     InputPin_BeginFlush,
 547     InputPin_EndFlush,
 548     InputPin_NewSegment
 549 };
 550
 551 static HRESULT WINAPI TransformFilter_Output_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 552 {
 553     IPinImpl *This = (IPinImpl *)iface;
 554     ENUMMEDIADETAILS emd;
 555
 556     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 557
 558     emd.cMediaTypes = 1;
 559     emd.pMediaTypes = &This->mtCurrent;
 560
 561     return IEnumMediaTypesImpl_Construct(&emd, ppEnum);
 562 }
 563
 564 static HRESULT WINAPI TransformFilter_Output_Disconnect(IPin * iface)
 565 {
 566     OutputPin* This = (OutputPin*)iface;
 567     HRESULT hr;
 568     TransformFilterImpl* pTransformFilter = (TransformFilterImpl*)This->pin.pinInfo.pFilter;
 569
 570     TRACE("(%p/%p)->()\n", This, iface);
 571
 572     hr = OutputPin_Disconnect(iface);
 573
 574     if (hr == S_OK)
 575     {
 576         pTransformFilter->pFuncsTable->pfnCleanup(pTransformFilter);
 577     }
 578
 579     return hr;
 580 }
 581
 582 static const IPinVtbl TransformFilter_OutputPin_Vtbl =
 583 {
 584     OutputPin_QueryInterface,
 585     IPinImpl_AddRef,
 586     OutputPin_Release,
 587     OutputPin_Connect,
 588     OutputPin_ReceiveConnection,
 589     TransformFilter_Output_Disconnect,
 590     IPinImpl_ConnectedTo,
 591     IPinImpl_ConnectionMediaType,
 592     IPinImpl_QueryPinInfo,
 593     IPinImpl_QueryDirection,
 594     IPinImpl_QueryId,
 595     IPinImpl_QueryAccept,
 596     TransformFilter_Output_EnumMediaTypes,
 597     IPinImpl_QueryInternalConnections,
 598     OutputPin_EndOfStream,
 599     OutputPin_BeginFlush,
 600     OutputPin_EndFlush,
 601     OutputPin_NewSegment
 602 };
 603
 604 static const IMemInputPinVtbl MemInputPin_Vtbl =
 605 {
 606     MemInputPin_QueryInterface,
 607     MemInputPin_AddRef,
 608     MemInputPin_Release,
 609     MemInputPin_GetAllocator,
 610     MemInputPin_NotifyAllocator,
 611     MemInputPin_GetAllocatorRequirements,
 612     MemInputPin_Receive,
 613     MemInputPin_ReceiveMultiple,
 614     MemInputPin_ReceiveCanBlock
 615 };