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   1 /*
   2  * Transform Filter (Base for decoders, etc...)
   3  *
   4  * Copyright 2005 Christian Costa
   5  * Copyright 2010 Aric Stewart, CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21 #include "config.h"
  22 #include <stdarg.h>
  23
  24 #define COBJMACROS
  25
  26 #include "windef.h"
  27 #include "winbase.h"
  28 #include "dshow.h"
  29 #include "amvideo.h"
  30 #include "strmif.h"
  31 #include "vfw.h"
  32
  33 #include <assert.h>
  34
  35 #include "wine/unicode.h"
  36 #include "wine/debug.h"
  37 #include "wine/strmbase.h"
  38
  39 WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
  40
  41 static const WCHAR wcsInputPinName[] = {'i','n','p','u','t',' ','p','i','n',0};
  42 static const WCHAR wcsOutputPinName[] = {'o','u','t','p','u','t',' ','p','i','n',0};
  43
  44 static const IBaseFilterVtbl TransformFilter_Vtbl;
  45 static const IPinVtbl TransformFilter_InputPin_Vtbl;
  46 static const IPinVtbl TransformFilter_OutputPin_Vtbl;
  47 static const IQualityControlVtbl TransformFilter_QualityControl_Vtbl;
  48
  49 static HRESULT WINAPI TransformFilter_Input_CheckMediaType(BasePin *iface, const AM_MEDIA_TYPE * pmt)
  50 {
  51     BaseInputPin* This = (BaseInputPin*) iface;
  52     TransformFilter * pTransform;
  53
  54     TRACE("%p\n", iface);
  55     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
  56
  57     if (pTransform->pFuncsTable->pfnCheckInputType)
  58         return pTransform->pFuncsTable->pfnCheckInputType(pTransform, pmt);
  59     /* Assume OK if there's no query method (the connection will fail if
  60        needed) */
  61     return S_OK;
  62 }
  63
  64 static HRESULT WINAPI TransformFilter_Input_Receive(BaseInputPin *This, IMediaSample *pInSample)
  65 {
  66     HRESULT hr = S_FALSE;
  67     TransformFilter * pTransform;
  68     TRACE("%p\n", This);
  69     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
  70
  71     EnterCriticalSection(&pTransform->filter.csFilter);
  72     if (pTransform->filter.state == State_Stopped)
  73     {
  74         LeaveCriticalSection(&pTransform->filter.csFilter);
  75         return VFW_E_WRONG_STATE;
  76     }
  77
  78     if (This->end_of_stream || This->flushing)
  79     {
  80         LeaveCriticalSection(&pTransform->filter.csFilter);
  81         return S_FALSE;
  82     }
  83     LeaveCriticalSection(&pTransform->filter.csFilter);
  84
  85     if (pTransform->pFuncsTable->pfnReceive)
  86         hr = pTransform->pFuncsTable->pfnReceive(pTransform, pInSample);
  87     else
  88         hr = S_FALSE;
  89
  90     return hr;
  91 }
  92
  93 static HRESULT WINAPI TransformFilter_Output_QueryAccept(IPin *iface, const AM_MEDIA_TYPE * pmt)
  94 {
  95     BasePin *This = (BasePin *)iface;
  96     TransformFilter *pTransformFilter = (TransformFilter *)This->pinInfo.pFilter;
  97     AM_MEDIA_TYPE* outpmt = &pTransformFilter->pmt;
  98     TRACE("%p\n", iface);
  99
 100     if (IsEqualIID(&pmt->majortype, &outpmt->majortype)
 101         && (IsEqualIID(&pmt->subtype, &outpmt->subtype) || IsEqualIID(&outpmt->subtype, &GUID_NULL)))
 102         return S_OK;
 103     return S_FALSE;
 104 }
 105
 106 static HRESULT WINAPI TransformFilter_Output_DecideBufferSize(BaseOutputPin *This, IMemAllocator *pAlloc, ALLOCATOR_PROPERTIES *ppropInputRequest)
 107 {
 108     TransformFilter *pTransformFilter = (TransformFilter *)This->pin.pinInfo.pFilter;
 109     return pTransformFilter->pFuncsTable->pfnDecideBufferSize(pTransformFilter, pAlloc, ppropInputRequest);
 110 }
 111
 112 static HRESULT WINAPI TransformFilter_Output_GetMediaType(BasePin *This, int iPosition, AM_MEDIA_TYPE *pmt)
 113 {
 114     TransformFilter *pTransform = (TransformFilter *)This->pinInfo.pFilter;
 115
 116     if (iPosition < 0)
 117         return E_INVALIDARG;
 118     if (iPosition > 0)
 119         return VFW_S_NO_MORE_ITEMS;
 120     CopyMediaType(pmt, &pTransform->pmt);
 121     return S_OK;
 122 }
 123
 124 static IPin* WINAPI TransformFilter_GetPin(BaseFilter *iface, int pos)
 125 {
 126     TransformFilter *This = (TransformFilter *)iface;
 127
 128     if (pos >= This->npins || pos < 0)
 129         return NULL;
 130
 131     IPin_AddRef(This->ppPins[pos]);
 132     return This->ppPins[pos];
 133 }
 134
 135 static LONG WINAPI TransformFilter_GetPinCount(BaseFilter *iface)
 136 {
 137     TransformFilter *This = (TransformFilter *)iface;
 138
 139     return (This->npins+1);
 140 }
 141
 142 static const BaseFilterFuncTable tfBaseFuncTable = {
 143     TransformFilter_GetPin,
 144     TransformFilter_GetPinCount
 145 };
 146
 147 static const  BasePinFuncTable tf_input_BaseFuncTable = {
 148     TransformFilter_Input_CheckMediaType,
 149     NULL,
 150     BasePinImpl_GetMediaTypeVersion,
 151     BasePinImpl_GetMediaType
 152 };
 153
 154 static const BaseInputPinFuncTable tf_input_BaseInputFuncTable = {
 155     TransformFilter_Input_Receive
 156 };
 157
 158 static const  BasePinFuncTable tf_output_BaseFuncTable = {
 159     NULL,
 160     BaseOutputPinImpl_AttemptConnection,
 161     BasePinImpl_GetMediaTypeVersion,
 162     TransformFilter_Output_GetMediaType
 163 };
 164
 165 static const BaseOutputPinFuncTable tf_output_BaseOutputFuncTable = {
 166     TransformFilter_Output_DecideBufferSize,
 167     BaseOutputPinImpl_DecideAllocator,
 168     BaseOutputPinImpl_BreakConnect
 169 };
 170
 171 static HRESULT TransformFilter_Init(const IBaseFilterVtbl *pVtbl, const CLSID* pClsid, const TransformFilterFuncTable* pFuncsTable, TransformFilter* pTransformFilter)
 172 {
 173     HRESULT hr;
 174     PIN_INFO piInput;
 175     PIN_INFO piOutput;
 176
 177     BaseFilter_Init(&pTransformFilter->filter, pVtbl, pClsid, (DWORD_PTR)(__FILE__ ": TransformFilter.csFilter"), &tfBaseFuncTable);
 178
 179     /* pTransformFilter is already allocated */
 180     pTransformFilter->pFuncsTable = pFuncsTable;
 181     ZeroMemory(&pTransformFilter->pmt, sizeof(pTransformFilter->pmt));
 182     pTransformFilter->npins = 2;
 183
 184     pTransformFilter->ppPins = CoTaskMemAlloc(2 * sizeof(IPin *));
 185
 186     /* construct input pin */
 187     piInput.dir = PINDIR_INPUT;
 188     piInput.pFilter = (IBaseFilter *)pTransformFilter;
 189     lstrcpynW(piInput.achName, wcsInputPinName, sizeof(piInput.achName) / sizeof(piInput.achName[0]));
 190     piOutput.dir = PINDIR_OUTPUT;
 191     piOutput.pFilter = (IBaseFilter *)pTransformFilter;
 192     lstrcpynW(piOutput.achName, wcsOutputPinName, sizeof(piOutput.achName) / sizeof(piOutput.achName[0]));
 193
 194     hr = BaseInputPin_Construct(&TransformFilter_InputPin_Vtbl, &piInput, &tf_input_BaseFuncTable, &tf_input_BaseInputFuncTable, &pTransformFilter->filter.csFilter, NULL, &pTransformFilter->ppPins[0]);
 195
 196     if (SUCCEEDED(hr))
 197     {
 198         hr = BaseOutputPin_Construct(&TransformFilter_OutputPin_Vtbl, sizeof(BaseOutputPin), &piOutput, &tf_output_BaseFuncTable, &tf_output_BaseOutputFuncTable, &pTransformFilter->filter.csFilter, &pTransformFilter->ppPins[1]);
 199
 200         if (FAILED(hr))
 201             ERR("Cannot create output pin (%x)\n", hr);
 202         else {
 203             QualityControlImpl_init(&pTransformFilter->qcimpl, (IPin*)pTransformFilter->ppPins[0], (IBaseFilter*)pTransformFilter);
 204             pTransformFilter->qcimpl.lpVtbl = &TransformFilter_QualityControl_Vtbl;
 205         }
 206     }
 207     if (FAILED(hr))
 208     {
 209         CoTaskMemFree(pTransformFilter->ppPins);
 210         BaseFilterImpl_Release((IBaseFilter*)pTransformFilter);
 211     }
 212
 213     return hr;
 214 }
 215
 216 HRESULT TransformFilter_Construct(const IBaseFilterVtbl *pVtbl, LONG filter_size, const CLSID* pClsid, const TransformFilterFuncTable* pFuncsTable, IBaseFilter ** ppTransformFilter)
 217 {
 218     TransformFilter* pTf;
 219
 220     *ppTransformFilter = NULL;
 221
 222     assert(filter_size >= sizeof(TransformFilter));
 223
 224     pTf = CoTaskMemAlloc(filter_size);
 225
 226     if (!pTf)
 227         return E_OUTOFMEMORY;
 228
 229     ZeroMemory(pTf, filter_size);
 230
 231     if (SUCCEEDED(TransformFilter_Init(pVtbl, pClsid, pFuncsTable, pTf)))
 232     {
 233         *ppTransformFilter = (IBaseFilter*)(&pTf->filter.lpVtbl);
 234         return S_OK;
 235     }
 236
 237     CoTaskMemFree(pTf);
 238     return E_FAIL;
 239 }
 240
 241 HRESULT WINAPI TransformFilterImpl_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 242 {
 243     HRESULT hr;
 244     TransformFilter *This = (TransformFilter *)iface;
 245     TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv);
 246
 247     if (IsEqualIID(riid, &IID_IQualityControl))  {
 248         *ppv = (IQualityControl*)&This->qcimpl;
 249         IUnknown_AddRef((IUnknown*)*ppv);
 250         return S_OK;
 251     }
 252     hr = BaseFilterImpl_QueryInterface(iface, riid, ppv);
 253
 254     if (FAILED(hr) && !IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IVideoWindow) &&
 255         !IsEqualIID(riid, &IID_IAMFilterMiscFlags))
 256         FIXME("No interface for %s!\n", debugstr_guid(riid));
 257
 258     return hr;
 259 }
 260
 261 ULONG WINAPI TransformFilterImpl_Release(IBaseFilter * iface)
 262 {
 263     TransformFilter *This = (TransformFilter *)iface;
 264     ULONG refCount = BaseFilterImpl_Release(iface);
 265
 266     TRACE("(%p/%p)->() Release from %d\n", This, iface, refCount + 1);
 267
 268     if (!refCount)
 269     {
 270         ULONG i;
 271
 272         for (i = 0; i < This->npins; i++)
 273         {
 274             IPin *pConnectedTo;
 275
 276             if (SUCCEEDED(IPin_ConnectedTo(This->ppPins[i], &pConnectedTo)))
 277             {
 278                 IPin_Disconnect(pConnectedTo);
 279                 IPin_Release(pConnectedTo);
 280             }
 281             IPin_Disconnect(This->ppPins[i]);
 282
 283             IPin_Release(This->ppPins[i]);
 284         }
 285
 286         CoTaskMemFree(This->ppPins);
 287
 288         TRACE("Destroying transform filter\n");
 289         FreeMediaType(&This->pmt);
 290         CoTaskMemFree(This);
 291
 292         return 0;
 293     }
 294     else
 295         return refCount;
 296 }
 297
 298 /** IMediaFilter methods **/
 299
 300 HRESULT WINAPI TransformFilterImpl_Stop(IBaseFilter * iface)
 301 {
 302     TransformFilter *This = (TransformFilter *)iface;
 303     HRESULT hr = S_OK;
 304
 305     TRACE("(%p/%p)\n", This, iface);
 306
 307     EnterCriticalSection(&This->filter.csFilter);
 308     {
 309         This->filter.state = State_Stopped;
 310         if (This->pFuncsTable->pfnStopStreaming)
 311             hr = This->pFuncsTable->pfnStopStreaming(This);
 312     }
 313     LeaveCriticalSection(&This->filter.csFilter);
 314
 315     return hr;
 316 }
 317
 318 HRESULT WINAPI TransformFilterImpl_Pause(IBaseFilter * iface)
 319 {
 320     TransformFilter *This = (TransformFilter *)iface;
 321     HRESULT hr;
 322
 323     TRACE("(%p/%p)->()\n", This, iface);
 324
 325     EnterCriticalSection(&This->filter.csFilter);
 326     {
 327         if (This->filter.state == State_Stopped)
 328             hr = IBaseFilter_Run(iface, -1);
 329         else
 330             hr = S_OK;
 331
 332         if (SUCCEEDED(hr))
 333             This->filter.state = State_Paused;
 334     }
 335     LeaveCriticalSection(&This->filter.csFilter);
 336
 337     return hr;
 338 }
 339
 340 HRESULT WINAPI TransformFilterImpl_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 341 {
 342     HRESULT hr = S_OK;
 343     TransformFilter *This = (TransformFilter *)iface;
 344
 345     TRACE("(%p/%p)->(%s)\n", This, iface, wine_dbgstr_longlong(tStart));
 346
 347     EnterCriticalSection(&This->filter.csFilter);
 348     {
 349         if (This->filter.state == State_Stopped)
 350         {
 351             ((BaseInputPin *)This->ppPins[0])->end_of_stream = 0;
 352             if (This->pFuncsTable->pfnStartStreaming)
 353                 hr = This->pFuncsTable->pfnStartStreaming(This);
 354             if (SUCCEEDED(hr))
 355                 hr = BaseOutputPinImpl_Active((BaseOutputPin *)This->ppPins[1]);
 356         }
 357
 358         if (SUCCEEDED(hr))
 359         {
 360             This->filter.rtStreamStart = tStart;
 361             This->filter.state = State_Running;
 362         }
 363     }
 364     LeaveCriticalSection(&This->filter.csFilter);
 365
 366     return hr;
 367 }
 368
 369 /** IBaseFilter implementation **/
 370
 371 HRESULT WINAPI TransformFilterImpl_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 372 {
 373     TransformFilter *This = (TransformFilter *)iface;
 374
 375     TRACE("(%p/%p)->(%p,%p)\n", This, iface, debugstr_w(Id), ppPin);
 376
 377     return E_NOTIMPL;
 378 }
 379
 380 static const IBaseFilterVtbl TransformFilter_Vtbl =
 381 {
 382     TransformFilterImpl_QueryInterface,
 383     BaseFilterImpl_AddRef,
 384     TransformFilterImpl_Release,
 385     BaseFilterImpl_GetClassID,
 386     TransformFilterImpl_Stop,
 387     TransformFilterImpl_Pause,
 388     TransformFilterImpl_Run,
 389     BaseFilterImpl_GetState,
 390     BaseFilterImpl_SetSyncSource,
 391     BaseFilterImpl_GetSyncSource,
 392     BaseFilterImpl_EnumPins,
 393     TransformFilterImpl_FindPin,
 394     BaseFilterImpl_QueryFilterInfo,
 395     BaseFilterImpl_JoinFilterGraph,
 396     BaseFilterImpl_QueryVendorInfo
 397 };
 398
 399 static HRESULT WINAPI TransformFilter_InputPin_EndOfStream(IPin * iface)
 400 {
 401     BaseInputPin* This = (BaseInputPin*) iface;
 402     TransformFilter* pTransform;
 403     IPin* ppin;
 404     HRESULT hr;
 405
 406     TRACE("(%p)->()\n", iface);
 407
 408     /* Since we process samples synchronously, just forward notification downstream */
 409     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 410     if (!pTransform)
 411         hr = E_FAIL;
 412     else
 413         hr = IPin_ConnectedTo(pTransform->ppPins[1], &ppin);
 414     if (SUCCEEDED(hr))
 415     {
 416         hr = IPin_EndOfStream(ppin);
 417         IPin_Release(ppin);
 418     }
 419
 420     if (FAILED(hr))
 421         ERR("%x\n", hr);
 422     return hr;
 423 }
 424
 425 static HRESULT WINAPI TransformFilter_InputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 426 {
 427     BaseInputPin* This = (BaseInputPin*) iface;
 428     TransformFilter* pTransform;
 429     HRESULT hr = S_OK;
 430
 431     TRACE("(%p)->(%p, %p)\n", iface, pReceivePin, pmt);
 432
 433     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 434
 435     if (pTransform->pFuncsTable->pfnSetMediaType)
 436         hr = pTransform->pFuncsTable->pfnSetMediaType(pTransform, PINDIR_INPUT, pmt);
 437
 438     if (SUCCEEDED(hr) && pTransform->pFuncsTable->pfnCompleteConnect)
 439         hr = pTransform->pFuncsTable->pfnCompleteConnect(pTransform, PINDIR_INPUT, pReceivePin);
 440
 441     if (SUCCEEDED(hr))
 442     {
 443         hr = BaseInputPinImpl_ReceiveConnection(iface, pReceivePin, pmt);
 444         if (FAILED(hr) && pTransform->pFuncsTable->pfnBreakConnect)
 445             pTransform->pFuncsTable->pfnBreakConnect(pTransform, PINDIR_INPUT);
 446     }
 447
 448     return hr;
 449 }
 450
 451 static HRESULT WINAPI TransformFilter_InputPin_Disconnect(IPin * iface)
 452 {
 453     BaseInputPin* This = (BaseInputPin*) iface;
 454     TransformFilter* pTransform;
 455
 456     TRACE("(%p)->()\n", iface);
 457
 458     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 459     if (pTransform->pFuncsTable->pfnBreakConnect)
 460         pTransform->pFuncsTable->pfnBreakConnect(pTransform, PINDIR_INPUT);
 461
 462     return BasePinImpl_Disconnect(iface);
 463 }
 464
 465 static HRESULT WINAPI TransformFilter_InputPin_BeginFlush(IPin * iface)
 466 {
 467     BaseInputPin* This = (BaseInputPin*) iface;
 468     TransformFilter* pTransform;
 469     HRESULT hr = S_OK;
 470
 471     TRACE("(%p)->()\n", iface);
 472
 473     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 474     EnterCriticalSection(&pTransform->filter.csFilter);
 475     if (pTransform->pFuncsTable->pfnBeginFlush)
 476         hr = pTransform->pFuncsTable->pfnBeginFlush(pTransform);
 477     if (SUCCEEDED(hr))
 478         hr = BaseInputPinImpl_BeginFlush(iface);
 479     LeaveCriticalSection(&pTransform->filter.csFilter);
 480     return hr;
 481 }
 482
 483 static HRESULT WINAPI TransformFilter_InputPin_EndFlush(IPin * iface)
 484 {
 485     BaseInputPin* This = (BaseInputPin*) iface;
 486     TransformFilter* pTransform;
 487     HRESULT hr = S_OK;
 488
 489     TRACE("(%p)->()\n", iface);
 490
 491     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 492     EnterCriticalSection(&pTransform->filter.csFilter);
 493     if (pTransform->pFuncsTable->pfnEndFlush)
 494         hr = pTransform->pFuncsTable->pfnEndFlush(pTransform);
 495     if (SUCCEEDED(hr))
 496         hr = BaseInputPinImpl_EndFlush(iface);
 497     LeaveCriticalSection(&pTransform->filter.csFilter);
 498     return hr;
 499 }
 500
 501 static HRESULT WINAPI TransformFilter_InputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 502 {
 503     BaseInputPin* This = (BaseInputPin*) iface;
 504     TransformFilter* pTransform;
 505     HRESULT hr = S_OK;
 506
 507     TRACE("(%p)->()\n", iface);
 508
 509     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 510     EnterCriticalSection(&pTransform->filter.csFilter);
 511     if (pTransform->pFuncsTable->pfnNewSegment)
 512         hr = pTransform->pFuncsTable->pfnNewSegment(pTransform, tStart, tStop, dRate);
 513     if (SUCCEEDED(hr))
 514         hr = BaseInputPinImpl_NewSegment(iface, tStart, tStop, dRate);
 515     LeaveCriticalSection(&pTransform->filter.csFilter);
 516     return hr;
 517 }
 518
 519 static const IPinVtbl TransformFilter_InputPin_Vtbl =
 520 {
 521     BaseInputPinImpl_QueryInterface,
 522     BasePinImpl_AddRef,
 523     BaseInputPinImpl_Release,
 524     BaseInputPinImpl_Connect,
 525     TransformFilter_InputPin_ReceiveConnection,
 526     TransformFilter_InputPin_Disconnect,
 527     BasePinImpl_ConnectedTo,
 528     BasePinImpl_ConnectionMediaType,
 529     BasePinImpl_QueryPinInfo,
 530     BasePinImpl_QueryDirection,
 531     BasePinImpl_QueryId,
 532     BaseInputPinImpl_QueryAccept,
 533     BasePinImpl_EnumMediaTypes,
 534     BasePinImpl_QueryInternalConnections,
 535     TransformFilter_InputPin_EndOfStream,
 536     TransformFilter_InputPin_BeginFlush,
 537     TransformFilter_InputPin_EndFlush,
 538     TransformFilter_InputPin_NewSegment
 539 };
 540
 541 static const IPinVtbl TransformFilter_OutputPin_Vtbl =
 542 {
 543     BaseOutputPinImpl_QueryInterface,
 544     BasePinImpl_AddRef,
 545     BaseOutputPinImpl_Release,
 546     BaseOutputPinImpl_Connect,
 547     BaseOutputPinImpl_ReceiveConnection,
 548     BaseOutputPinImpl_Disconnect,
 549     BasePinImpl_ConnectedTo,
 550     BasePinImpl_ConnectionMediaType,
 551     BasePinImpl_QueryPinInfo,
 552     BasePinImpl_QueryDirection,
 553     BasePinImpl_QueryId,
 554     TransformFilter_Output_QueryAccept,
 555     BasePinImpl_EnumMediaTypes,
 556     BasePinImpl_QueryInternalConnections,
 557     BaseOutputPinImpl_EndOfStream,
 558     BaseOutputPinImpl_BeginFlush,
 559     BaseOutputPinImpl_EndFlush,
 560     BasePinImpl_NewSegment
 561 };
 562
 563 static HRESULT WINAPI TransformFilter_QualityControlImpl_Notify(IQualityControl *iface, IBaseFilter *sender, Quality qm) {
 564     QualityControlImpl *qc = (QualityControlImpl*)iface;
 565     TransformFilter *This = (TransformFilter *)qc->self;
 566
 567     if (This->pFuncsTable->pfnNotify)
 568         return This->pFuncsTable->pfnNotify(This, sender, qm);
 569     else
 570         return QualityControlImpl_Notify(iface, sender, qm);
 571 }
 572
 573 static const IQualityControlVtbl TransformFilter_QualityControl_Vtbl = {
 574     QualityControlImpl_QueryInterface,
 575     QualityControlImpl_AddRef,
 576     QualityControlImpl_Release,
 577     TransformFilter_QualityControlImpl_Notify,
 578     QualityControlImpl_SetSink
 579 };