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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     ZeroMemory(pTf, filter_size);
 226
 227     if (!pTf)
 228         return E_OUTOFMEMORY;
 229
 230     if (SUCCEEDED(TransformFilter_Init(pVtbl, pClsid, pFuncsTable, pTf)))
 231     {
 232         *ppTransformFilter = (IBaseFilter*)(&pTf->filter.lpVtbl);
 233         return S_OK;
 234     }
 235
 236     CoTaskMemFree(pTf);
 237     return E_FAIL;
 238 }
 239
 240 HRESULT WINAPI TransformFilterImpl_QueryInterface(IBaseFilter * iface, REFIID riid, LPVOID * ppv)
 241 {
 242     HRESULT hr;
 243     TransformFilter *This = (TransformFilter *)iface;
 244     TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv);
 245
 246     if (IsEqualIID(riid, &IID_IQualityControl))  {
 247         *ppv = (IQualityControl*)&This->qcimpl;
 248         IUnknown_AddRef((IUnknown*)*ppv);
 249         return S_OK;
 250     }
 251     hr = BaseFilterImpl_QueryInterface(iface, riid, ppv);
 252
 253     if (FAILED(hr) && !IsEqualIID(riid, &IID_IPin) && !IsEqualIID(riid, &IID_IVideoWindow) &&
 254         !IsEqualIID(riid, &IID_IAMFilterMiscFlags))
 255         FIXME("No interface for %s!\n", debugstr_guid(riid));
 256
 257     return hr;
 258 }
 259
 260 ULONG WINAPI TransformFilterImpl_Release(IBaseFilter * iface)
 261 {
 262     TransformFilter *This = (TransformFilter *)iface;
 263     ULONG refCount = BaseFilterImpl_Release(iface);
 264
 265     TRACE("(%p/%p)->() Release from %d\n", This, iface, refCount + 1);
 266
 267     if (!refCount)
 268     {
 269         ULONG i;
 270
 271         for (i = 0; i < This->npins; i++)
 272         {
 273             IPin *pConnectedTo;
 274
 275             if (SUCCEEDED(IPin_ConnectedTo(This->ppPins[i], &pConnectedTo)))
 276             {
 277                 IPin_Disconnect(pConnectedTo);
 278                 IPin_Release(pConnectedTo);
 279             }
 280             IPin_Disconnect(This->ppPins[i]);
 281
 282             IPin_Release(This->ppPins[i]);
 283         }
 284
 285         CoTaskMemFree(This->ppPins);
 286
 287         TRACE("Destroying transform filter\n");
 288         FreeMediaType(&This->pmt);
 289         CoTaskMemFree(This);
 290
 291         return 0;
 292     }
 293     else
 294         return refCount;
 295 }
 296
 297 /** IMediaFilter methods **/
 298
 299 HRESULT WINAPI TransformFilterImpl_Stop(IBaseFilter * iface)
 300 {
 301     TransformFilter *This = (TransformFilter *)iface;
 302     HRESULT hr = S_OK;
 303
 304     TRACE("(%p/%p)\n", This, iface);
 305
 306     EnterCriticalSection(&This->filter.csFilter);
 307     {
 308         This->filter.state = State_Stopped;
 309         if (This->pFuncsTable->pfnStopStreaming)
 310             hr = This->pFuncsTable->pfnStopStreaming(This);
 311     }
 312     LeaveCriticalSection(&This->filter.csFilter);
 313
 314     return hr;
 315 }
 316
 317 HRESULT WINAPI TransformFilterImpl_Pause(IBaseFilter * iface)
 318 {
 319     TransformFilter *This = (TransformFilter *)iface;
 320     HRESULT hr;
 321
 322     TRACE("(%p/%p)->()\n", This, iface);
 323
 324     EnterCriticalSection(&This->filter.csFilter);
 325     {
 326         if (This->filter.state == State_Stopped)
 327             hr = IBaseFilter_Run(iface, -1);
 328         else
 329             hr = S_OK;
 330
 331         if (SUCCEEDED(hr))
 332             This->filter.state = State_Paused;
 333     }
 334     LeaveCriticalSection(&This->filter.csFilter);
 335
 336     return hr;
 337 }
 338
 339 HRESULT WINAPI TransformFilterImpl_Run(IBaseFilter * iface, REFERENCE_TIME tStart)
 340 {
 341     HRESULT hr = S_OK;
 342     TransformFilter *This = (TransformFilter *)iface;
 343
 344     TRACE("(%p/%p)->(%s)\n", This, iface, wine_dbgstr_longlong(tStart));
 345
 346     EnterCriticalSection(&This->filter.csFilter);
 347     {
 348         if (This->filter.state == State_Stopped)
 349         {
 350             ((BaseInputPin *)This->ppPins[0])->end_of_stream = 0;
 351             if (This->pFuncsTable->pfnStartStreaming)
 352                 hr = This->pFuncsTable->pfnStartStreaming(This);
 353             if (SUCCEEDED(hr))
 354                 hr = BaseOutputPinImpl_Active((BaseOutputPin *)This->ppPins[1]);
 355         }
 356
 357         if (SUCCEEDED(hr))
 358         {
 359             This->filter.rtStreamStart = tStart;
 360             This->filter.state = State_Running;
 361         }
 362     }
 363     LeaveCriticalSection(&This->filter.csFilter);
 364
 365     return hr;
 366 }
 367
 368 /** IBaseFilter implementation **/
 369
 370 HRESULT WINAPI TransformFilterImpl_FindPin(IBaseFilter * iface, LPCWSTR Id, IPin **ppPin)
 371 {
 372     TransformFilter *This = (TransformFilter *)iface;
 373
 374     TRACE("(%p/%p)->(%p,%p)\n", This, iface, debugstr_w(Id), ppPin);
 375
 376     return E_NOTIMPL;
 377 }
 378
 379 static const IBaseFilterVtbl TransformFilter_Vtbl =
 380 {
 381     TransformFilterImpl_QueryInterface,
 382     BaseFilterImpl_AddRef,
 383     TransformFilterImpl_Release,
 384     BaseFilterImpl_GetClassID,
 385     TransformFilterImpl_Stop,
 386     TransformFilterImpl_Pause,
 387     TransformFilterImpl_Run,
 388     BaseFilterImpl_GetState,
 389     BaseFilterImpl_SetSyncSource,
 390     BaseFilterImpl_GetSyncSource,
 391     BaseFilterImpl_EnumPins,
 392     TransformFilterImpl_FindPin,
 393     BaseFilterImpl_QueryFilterInfo,
 394     BaseFilterImpl_JoinFilterGraph,
 395     BaseFilterImpl_QueryVendorInfo
 396 };
 397
 398 static HRESULT WINAPI TransformFilter_InputPin_EndOfStream(IPin * iface)
 399 {
 400     BaseInputPin* This = (BaseInputPin*) iface;
 401     TransformFilter* pTransform;
 402     IPin* ppin;
 403     HRESULT hr;
 404
 405     TRACE("(%p)->()\n", iface);
 406
 407     /* Since we process samples synchronously, just forward notification downstream */
 408     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 409     if (!pTransform)
 410         hr = E_FAIL;
 411     else
 412         hr = IPin_ConnectedTo(pTransform->ppPins[1], &ppin);
 413     if (SUCCEEDED(hr))
 414     {
 415         hr = IPin_EndOfStream(ppin);
 416         IPin_Release(ppin);
 417     }
 418
 419     if (FAILED(hr))
 420         ERR("%x\n", hr);
 421     return hr;
 422 }
 423
 424 static HRESULT WINAPI TransformFilter_InputPin_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 425 {
 426     BaseInputPin* This = (BaseInputPin*) iface;
 427     TransformFilter* pTransform;
 428     HRESULT hr = S_OK;
 429
 430     TRACE("(%p)->(%p, %p)\n", iface, pReceivePin, pmt);
 431
 432     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 433
 434     if (pTransform->pFuncsTable->pfnSetMediaType)
 435         hr = pTransform->pFuncsTable->pfnSetMediaType(pTransform, PINDIR_INPUT, pmt);
 436
 437     if (SUCCEEDED(hr) && pTransform->pFuncsTable->pfnCompleteConnect)
 438         hr = pTransform->pFuncsTable->pfnCompleteConnect(pTransform, PINDIR_INPUT, pReceivePin);
 439
 440     if (SUCCEEDED(hr))
 441     {
 442         hr = BaseInputPinImpl_ReceiveConnection(iface, pReceivePin, pmt);
 443         if (FAILED(hr) && pTransform->pFuncsTable->pfnBreakConnect)
 444             pTransform->pFuncsTable->pfnBreakConnect(pTransform, PINDIR_INPUT);
 445     }
 446
 447     return hr;
 448 }
 449
 450 static HRESULT WINAPI TransformFilter_InputPin_Disconnect(IPin * iface)
 451 {
 452     BaseInputPin* This = (BaseInputPin*) iface;
 453     TransformFilter* pTransform;
 454
 455     TRACE("(%p)->()\n", iface);
 456
 457     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 458     if (pTransform->pFuncsTable->pfnBreakConnect)
 459         pTransform->pFuncsTable->pfnBreakConnect(pTransform, PINDIR_INPUT);
 460
 461     return BasePinImpl_Disconnect(iface);
 462 }
 463
 464 static HRESULT WINAPI TransformFilter_InputPin_BeginFlush(IPin * iface)
 465 {
 466     BaseInputPin* This = (BaseInputPin*) iface;
 467     TransformFilter* pTransform;
 468     HRESULT hr = S_OK;
 469
 470     TRACE("(%p)->()\n", iface);
 471
 472     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 473     EnterCriticalSection(&pTransform->filter.csFilter);
 474     if (pTransform->pFuncsTable->pfnBeginFlush)
 475         hr = pTransform->pFuncsTable->pfnBeginFlush(pTransform);
 476     if (SUCCEEDED(hr))
 477         hr = BaseInputPinImpl_BeginFlush(iface);
 478     LeaveCriticalSection(&pTransform->filter.csFilter);
 479     return hr;
 480 }
 481
 482 static HRESULT WINAPI TransformFilter_InputPin_EndFlush(IPin * iface)
 483 {
 484     BaseInputPin* This = (BaseInputPin*) iface;
 485     TransformFilter* pTransform;
 486     HRESULT hr = S_OK;
 487
 488     TRACE("(%p)->()\n", iface);
 489
 490     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 491     EnterCriticalSection(&pTransform->filter.csFilter);
 492     if (pTransform->pFuncsTable->pfnEndFlush)
 493         hr = pTransform->pFuncsTable->pfnEndFlush(pTransform);
 494     if (SUCCEEDED(hr))
 495         hr = BaseInputPinImpl_EndFlush(iface);
 496     LeaveCriticalSection(&pTransform->filter.csFilter);
 497     return hr;
 498 }
 499
 500 static HRESULT WINAPI TransformFilter_InputPin_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 501 {
 502     BaseInputPin* This = (BaseInputPin*) iface;
 503     TransformFilter* pTransform;
 504     HRESULT hr = S_OK;
 505
 506     TRACE("(%p)->()\n", iface);
 507
 508     pTransform = (TransformFilter*)This->pin.pinInfo.pFilter;
 509     EnterCriticalSection(&pTransform->filter.csFilter);
 510     if (pTransform->pFuncsTable->pfnNewSegment)
 511         hr = pTransform->pFuncsTable->pfnNewSegment(pTransform, tStart, tStop, dRate);
 512     if (SUCCEEDED(hr))
 513         hr = BaseInputPinImpl_NewSegment(iface, tStart, tStop, dRate);
 514     LeaveCriticalSection(&pTransform->filter.csFilter);
 515     return hr;
 516 }
 517
 518 static const IPinVtbl TransformFilter_InputPin_Vtbl =
 519 {
 520     BaseInputPinImpl_QueryInterface,
 521     BasePinImpl_AddRef,
 522     BaseInputPinImpl_Release,
 523     BaseInputPinImpl_Connect,
 524     TransformFilter_InputPin_ReceiveConnection,
 525     TransformFilter_InputPin_Disconnect,
 526     BasePinImpl_ConnectedTo,
 527     BasePinImpl_ConnectionMediaType,
 528     BasePinImpl_QueryPinInfo,
 529     BasePinImpl_QueryDirection,
 530     BasePinImpl_QueryId,
 531     BaseInputPinImpl_QueryAccept,
 532     BasePinImpl_EnumMediaTypes,
 533     BasePinImpl_QueryInternalConnections,
 534     TransformFilter_InputPin_EndOfStream,
 535     TransformFilter_InputPin_BeginFlush,
 536     TransformFilter_InputPin_EndFlush,
 537     TransformFilter_InputPin_NewSegment
 538 };
 539
 540 static const IPinVtbl TransformFilter_OutputPin_Vtbl =
 541 {
 542     BaseOutputPinImpl_QueryInterface,
 543     BasePinImpl_AddRef,
 544     BaseOutputPinImpl_Release,
 545     BaseOutputPinImpl_Connect,
 546     BaseOutputPinImpl_ReceiveConnection,
 547     BaseOutputPinImpl_Disconnect,
 548     BasePinImpl_ConnectedTo,
 549     BasePinImpl_ConnectionMediaType,
 550     BasePinImpl_QueryPinInfo,
 551     BasePinImpl_QueryDirection,
 552     BasePinImpl_QueryId,
 553     TransformFilter_Output_QueryAccept,
 554     BasePinImpl_EnumMediaTypes,
 555     BasePinImpl_QueryInternalConnections,
 556     BaseOutputPinImpl_EndOfStream,
 557     BaseOutputPinImpl_BeginFlush,
 558     BaseOutputPinImpl_EndFlush,
 559     BasePinImpl_NewSegment
 560 };
 561
 562 HRESULT WINAPI TransformFilter_QualityControlImpl_Notify(IQualityControl *iface, IBaseFilter *sender, Quality qm) {
 563     QualityControlImpl *qc = (QualityControlImpl*)iface;
 564     TransformFilter *This = (TransformFilter *)qc->self;
 565
 566     if (This->pFuncsTable->pfnNotify)
 567         return This->pFuncsTable->pfnNotify(This, sender, qm);
 568     else
 569         return QualityControlImpl_Notify(iface, sender, qm);
 570 }
 571
 572 static const IQualityControlVtbl TransformFilter_QualityControl_Vtbl = {
 573     QualityControlImpl_QueryInterface,
 574     QualityControlImpl_AddRef,
 575     QualityControlImpl_Release,
 576     TransformFilter_QualityControlImpl_Notify,
 577     QualityControlImpl_SetSink
 578 };