reactos/lib/3rdparty/strmbase/pin.c

   1 /*
   2  * Generic Implementation of IPin Interface
   3  *
   4  * Copyright 2003 Robert Shearman
   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
  22 #include "strmbase_private.h"
  23
  24 static const IPinVtbl InputPin_Vtbl;
  25 static const IPinVtbl OutputPin_Vtbl;
  26 static const IMemInputPinVtbl MemInputPin_Vtbl;
  27
  28 typedef HRESULT (*SendPinFunc)( IPin *to, LPVOID arg );
  29
  30 static inline BasePin *impl_from_IPin( IPin *iface )
  31 {
  32     return CONTAINING_RECORD(iface, BasePin, IPin_iface);
  33 }
  34
  35 /** Helper function, there are a lot of places where the error code is inherited
  36  * The following rules apply:
  37  *
  38  * Return the first received error code (E_NOTIMPL is ignored)
  39  * If no errors occur: return the first received non-error-code that isn't S_OK
  40  */
  41 static HRESULT updatehres( HRESULT original, HRESULT new )
  42 {
  43     if (FAILED( original ) || new == E_NOTIMPL)
  44         return original;
  45
  46     if (FAILED( new ) || original == S_OK)
  47         return new;
  48
  49     return original;
  50 }
  51
  52 /** Sends a message from a pin further to other, similar pins
  53  * fnMiddle is called on each pin found further on the stream.
  54  * fnEnd (can be NULL) is called when the message can't be sent any further (this is a renderer or source)
  55  *
  56  * If the pin given is an input pin, the message will be sent downstream to other input pins
  57  * If the pin given is an output pin, the message will be sent upstream to other output pins
  58  */
  59 static HRESULT SendFurther( IPin *from, SendPinFunc fnMiddle, LPVOID arg, SendPinFunc fnEnd )
  60 {
  61     PIN_INFO pin_info;
  62     ULONG amount = 0;
  63     HRESULT hr = S_OK;
  64     HRESULT hr_return = S_OK;
  65     IEnumPins *enumpins = NULL;
  66     BOOL foundend = TRUE;
  67     PIN_DIRECTION from_dir;
  68
  69     IPin_QueryDirection( from, &from_dir );
  70
  71     hr = IPin_QueryInternalConnections( from, NULL, &amount );
  72     if (hr != E_NOTIMPL && amount)
  73         FIXME("Use QueryInternalConnections!\n");
  74      hr = S_OK;
  75
  76     pin_info.pFilter = NULL;
  77     hr = IPin_QueryPinInfo( from, &pin_info );
  78     if (FAILED(hr))
  79         goto out;
  80
  81     hr = IBaseFilter_EnumPins( pin_info.pFilter, &enumpins );
  82     if (FAILED(hr))
  83         goto out;
  84
  85     hr = IEnumPins_Reset( enumpins );
  86     while (hr == S_OK) {
  87         IPin *pin = NULL;
  88         hr = IEnumPins_Next( enumpins, 1, &pin, NULL );
  89         if (hr == VFW_E_ENUM_OUT_OF_SYNC)
  90         {
  91             hr = IEnumPins_Reset( enumpins );
  92             continue;
  93         }
  94         if (pin)
  95         {
  96             PIN_DIRECTION dir;
  97
  98             IPin_QueryDirection( pin, &dir );
  99             if (dir != from_dir)
 100             {
 101                 IPin *connected = NULL;
 102
 103                 foundend = FALSE;
 104                 IPin_ConnectedTo( pin, &connected );
 105                 if (connected)
 106                 {
 107                     HRESULT hr_local;
 108
 109                     hr_local = fnMiddle( connected, arg );
 110                     hr_return = updatehres( hr_return, hr_local );
 111                     IPin_Release(connected);
 112                 }
 113             }
 114             IPin_Release( pin );
 115         }
 116         else
 117         {
 118             hr = S_OK;
 119             break;
 120         }
 121     }
 122
 123     if (!foundend)
 124         hr = hr_return;
 125     else if (fnEnd) {
 126         HRESULT hr_local;
 127
 128         hr_local = fnEnd( from, arg );
 129         hr_return = updatehres( hr_return, hr_local );
 130     }
 131     IEnumPins_Release(enumpins);
 132
 133 out:
 134     if (pin_info.pFilter)
 135         IBaseFilter_Release( pin_info.pFilter );
 136     return hr;
 137 }
 138
 139 static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
 140 {
 141     /* Tempting to just do a memcpy, but the name field is
 142        128 characters long! We will probably never exceed 10
 143        most of the time, so we are better off copying
 144        each field manually */
 145     strcpyW(pDest->achName, pSrc->achName);
 146     pDest->dir = pSrc->dir;
 147     pDest->pFilter = pSrc->pFilter;
 148 }
 149
 150 static void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE * pmt)
 151 {
 152     if (!pmt)
 153         return;
 154     TRACE("\t%s\n\t%s\n\t...\n\t%s\n", debugstr_guid(&pmt->majortype), debugstr_guid(&pmt->subtype), debugstr_guid(&pmt->formattype));
 155 }
 156
 157 static BOOL CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, BOOL bWildcards)
 158 {
 159     TRACE("pmt1: ");
 160     dump_AM_MEDIA_TYPE(pmt1);
 161     TRACE("pmt2: ");
 162     dump_AM_MEDIA_TYPE(pmt2);
 163     return (((bWildcards && (IsEqualGUID(&pmt1->majortype, &GUID_NULL) || IsEqualGUID(&pmt2->majortype, &GUID_NULL))) || IsEqualGUID(&pmt1->majortype, &pmt2->majortype)) &&
 164             ((bWildcards && (IsEqualGUID(&pmt1->subtype, &GUID_NULL)   || IsEqualGUID(&pmt2->subtype, &GUID_NULL)))   || IsEqualGUID(&pmt1->subtype, &pmt2->subtype)));
 165 }
 166
 167 /*** Common Base Pin function */
 168 HRESULT WINAPI BasePinImpl_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
 169 {
 170     if (iPosition < 0)
 171         return E_INVALIDARG;
 172     return VFW_S_NO_MORE_ITEMS;
 173 }
 174
 175 LONG WINAPI BasePinImpl_GetMediaTypeVersion(BasePin *iface)
 176 {
 177     return 1;
 178 }
 179
 180 ULONG WINAPI BasePinImpl_AddRef(IPin * iface)
 181 {
 182     BasePin *This = impl_from_IPin(iface);
 183     ULONG refCount = InterlockedIncrement(&This->refCount);
 184
 185     TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1);
 186
 187     return refCount;
 188 }
 189
 190 HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface)
 191 {
 192     HRESULT hr;
 193     BasePin *This = impl_from_IPin(iface);
 194
 195     TRACE("()\n");
 196
 197     EnterCriticalSection(This->pCritSec);
 198     {
 199         if (This->pConnectedTo)
 200         {
 201             IPin_Release(This->pConnectedTo);
 202             This->pConnectedTo = NULL;
 203             FreeMediaType(&This->mtCurrent);
 204             ZeroMemory(&This->mtCurrent, sizeof(This->mtCurrent));
 205             hr = S_OK;
 206         }
 207         else
 208             hr = S_FALSE;
 209     }
 210     LeaveCriticalSection(This->pCritSec);
 211
 212     return hr;
 213 }
 214
 215 HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
 216 {
 217     HRESULT hr;
 218     BasePin *This = impl_from_IPin(iface);
 219
 220     TRACE("(%p)\n", ppPin);
 221
 222     EnterCriticalSection(This->pCritSec);
 223     {
 224         if (This->pConnectedTo)
 225         {
 226             *ppPin = This->pConnectedTo;
 227             IPin_AddRef(*ppPin);
 228             hr = S_OK;
 229         }
 230         else
 231         {
 232             hr = VFW_E_NOT_CONNECTED;
 233             *ppPin = NULL;
 234         }
 235     }
 236     LeaveCriticalSection(This->pCritSec);
 237
 238     return hr;
 239 }
 240
 241 HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
 242 {
 243     HRESULT hr;
 244     BasePin *This = impl_from_IPin(iface);
 245
 246     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 247
 248     EnterCriticalSection(This->pCritSec);
 249     {
 250         if (This->pConnectedTo)
 251         {
 252             CopyMediaType(pmt, &This->mtCurrent);
 253             hr = S_OK;
 254         }
 255         else
 256         {
 257             ZeroMemory(pmt, sizeof(*pmt));
 258             hr = VFW_E_NOT_CONNECTED;
 259         }
 260     }
 261     LeaveCriticalSection(This->pCritSec);
 262
 263     return hr;
 264 }
 265
 266 HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
 267 {
 268     BasePin *This = impl_from_IPin(iface);
 269
 270     TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
 271
 272     Copy_PinInfo(pInfo, &This->pinInfo);
 273     IBaseFilter_AddRef(pInfo->pFilter);
 274
 275     return S_OK;
 276 }
 277
 278 HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
 279 {
 280     BasePin *This = impl_from_IPin(iface);
 281
 282     TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
 283
 284     *pPinDir = This->pinInfo.dir;
 285
 286     return S_OK;
 287 }
 288
 289 HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id)
 290 {
 291     BasePin *This = impl_from_IPin(iface);
 292
 293     TRACE("(%p/%p)->(%p)\n", This, iface, Id);
 294
 295     *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
 296     if (!*Id)
 297         return E_OUTOFMEMORY;
 298
 299     strcpyW(*Id, This->pinInfo.achName);
 300
 301     return S_OK;
 302 }
 303
 304 HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 305 {
 306     TRACE("(%p)->(%p)\n", iface, pmt);
 307
 308     return S_OK;
 309 }
 310
 311 HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 312 {
 313     BasePin *This = impl_from_IPin(iface);
 314
 315     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 316
 317     /* override this method to allow enumeration of your types */
 318
 319     return EnumMediaTypes_Construct(This, This->pFuncsTable->pfnGetMediaType, This->pFuncsTable->pfnGetMediaTypeVersion , ppEnum);
 320 }
 321
 322 HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
 323 {
 324     BasePin *This = impl_from_IPin(iface);
 325
 326     TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
 327
 328     return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
 329 }
 330
 331 HRESULT WINAPI BasePinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 332 {
 333     BasePin *This = impl_from_IPin(iface);
 334
 335     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
 336
 337     This->tStart = tStart;
 338     This->tStop = tStop;
 339     This->dRate = dRate;
 340
 341     return S_OK;
 342 }
 343
 344 /*** OutputPin implementation ***/
 345
 346 static inline BaseOutputPin *impl_BaseOutputPin_from_IPin( IPin *iface )
 347 {
 348     return CONTAINING_RECORD(iface, BaseOutputPin, pin.IPin_iface);
 349 }
 350
 351 static inline BaseOutputPin *impl_BaseOutputPin_from_BasePin( BasePin *iface )
 352 {
 353     return CONTAINING_RECORD(iface, BaseOutputPin, pin);
 354 }
 355
 356 HRESULT WINAPI BaseOutputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 357 {
 358     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 359
 360     TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv);
 361
 362     *ppv = NULL;
 363
 364     if (IsEqualIID(riid, &IID_IUnknown))
 365         *ppv = iface;
 366     else if (IsEqualIID(riid, &IID_IPin))
 367         *ppv = iface;
 368     else if (IsEqualIID(riid, &IID_IMediaSeeking) ||
 369              IsEqualIID(riid, &IID_IQualityControl))
 370     {
 371         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, riid, ppv);
 372     }
 373
 374     if (*ppv)
 375     {
 376         IUnknown_AddRef((IUnknown *)(*ppv));
 377         return S_OK;
 378     }
 379
 380     FIXME("No interface for %s!\n", debugstr_guid(riid));
 381
 382     return E_NOINTERFACE;
 383 }
 384
 385 ULONG WINAPI BaseOutputPinImpl_Release(IPin * iface)
 386 {
 387     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 388     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 389
 390     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 391
 392     if (!refCount)
 393     {
 394         FreeMediaType(&This->pin.mtCurrent);
 395         if (This->pAllocator)
 396             IMemAllocator_Release(This->pAllocator);
 397         This->pAllocator = NULL;
 398         CoTaskMemFree(This);
 399         return 0;
 400     }
 401     return refCount;
 402 }
 403
 404 HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 405 {
 406     HRESULT hr;
 407     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 408
 409     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 410     dump_AM_MEDIA_TYPE(pmt);
 411
 412     /* If we try to connect to ourselves, we will definitely deadlock.
 413      * There are other cases where we could deadlock too, but this
 414      * catches the obvious case */
 415     assert(pReceivePin != iface);
 416
 417     EnterCriticalSection(This->pin.pCritSec);
 418     {
 419         /* if we have been a specific type to connect with, then we can either connect
 420          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 421         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 422             hr = This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmt);
 423         else
 424         {
 425             /* negotiate media type */
 426
 427             IEnumMediaTypes * pEnumCandidates;
 428             AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */
 429
 430             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 431             {
 432                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 433
 434                 /* try this filter's media types first */
 435                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 436                 {
 437                     assert(pmtCandidate);
 438                     dump_AM_MEDIA_TYPE(pmtCandidate);
 439                     if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype)
 440                         && !IsEqualGUID(&GUID_NULL, &pmtCandidate->formattype))
 441                         assert(pmtCandidate->pbFormat);
 442                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 443                         (This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmtCandidate) == S_OK))
 444                     {
 445                         hr = S_OK;
 446                         DeleteMediaType(pmtCandidate);
 447                         break;
 448                     }
 449                     DeleteMediaType(pmtCandidate);
 450                     pmtCandidate = NULL;
 451                 }
 452                 IEnumMediaTypes_Release(pEnumCandidates);
 453             }
 454
 455             /* then try receiver filter's media types */
 456             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 457             {
 458                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 459
 460                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 461                 {
 462                     assert(pmtCandidate);
 463                     dump_AM_MEDIA_TYPE(pmtCandidate);
 464                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 465                         (This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmtCandidate) == S_OK))
 466                     {
 467                         hr = S_OK;
 468                         DeleteMediaType(pmtCandidate);
 469                         break;
 470                     }
 471                     DeleteMediaType(pmtCandidate);
 472                     pmtCandidate = NULL;
 473                 } /* while */
 474                 IEnumMediaTypes_Release(pEnumCandidates);
 475             } /* if not found */
 476         } /* if negotiate media type */
 477     } /* if succeeded */
 478     LeaveCriticalSection(This->pin.pCritSec);
 479
 480     TRACE(" -- %x\n", hr);
 481     return hr;
 482 }
 483
 484 HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 485 {
 486     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 487
 488     return E_UNEXPECTED;
 489 }
 490
 491 HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface)
 492 {
 493     HRESULT hr;
 494     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 495
 496     TRACE("()\n");
 497
 498     EnterCriticalSection(This->pin.pCritSec);
 499     {
 500         if (This->pMemInputPin)
 501         {
 502             IMemInputPin_Release(This->pMemInputPin);
 503             This->pMemInputPin = NULL;
 504         }
 505         if (This->pin.pConnectedTo)
 506         {
 507             IPin_Release(This->pin.pConnectedTo);
 508             This->pin.pConnectedTo = NULL;
 509             FreeMediaType(&This->pin.mtCurrent);
 510             ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent));
 511             hr = S_OK;
 512         }
 513         else
 514             hr = S_FALSE;
 515     }
 516     LeaveCriticalSection(This->pin.pCritSec);
 517
 518     return hr;
 519 }
 520
 521 HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface)
 522 {
 523     TRACE("()\n");
 524
 525     /* not supposed to do anything in an output pin */
 526
 527     return E_UNEXPECTED;
 528 }
 529
 530 HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface)
 531 {
 532     TRACE("(%p)->()\n", iface);
 533
 534     /* not supposed to do anything in an output pin */
 535
 536     return E_UNEXPECTED;
 537 }
 538
 539 HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface)
 540 {
 541     TRACE("(%p)->()\n", iface);
 542
 543     /* not supposed to do anything in an output pin */
 544
 545     return E_UNEXPECTED;
 546 }
 547
 548 static const IPinVtbl OutputPin_Vtbl =
 549 {
 550     BaseOutputPinImpl_QueryInterface,
 551     BasePinImpl_AddRef,
 552     BaseOutputPinImpl_Release,
 553     BaseOutputPinImpl_Connect,
 554     BaseOutputPinImpl_ReceiveConnection,
 555     BaseOutputPinImpl_Disconnect,
 556     BasePinImpl_ConnectedTo,
 557     BasePinImpl_ConnectionMediaType,
 558     BasePinImpl_QueryPinInfo,
 559     BasePinImpl_QueryDirection,
 560     BasePinImpl_QueryId,
 561     BasePinImpl_QueryAccept,
 562     BasePinImpl_EnumMediaTypes,
 563     BasePinImpl_QueryInternalConnections,
 564     BaseOutputPinImpl_EndOfStream,
 565     BaseOutputPinImpl_BeginFlush,
 566     BaseOutputPinImpl_EndFlush,
 567     BasePinImpl_NewSegment
 568 };
 569
 570 HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin *This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags)
 571 {
 572     HRESULT hr;
 573
 574     TRACE("(%p, %p, %p, %x)\n", ppSample, tStart, tStop, dwFlags);
 575
 576     if (!This->pin.pConnectedTo)
 577         hr = VFW_E_NOT_CONNECTED;
 578     else
 579     {
 580         hr = IMemAllocator_GetBuffer(This->pAllocator, ppSample, tStart, tStop, dwFlags);
 581
 582         if (SUCCEEDED(hr))
 583             hr = IMediaSample_SetTime(*ppSample, tStart, tStop);
 584     }
 585
 586     return hr;
 587 }
 588
 589 /* replaces OutputPin_SendSample */
 590 HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample)
 591 {
 592     HRESULT hr = S_OK;
 593     IMemInputPin * pMemConnected = NULL;
 594     PIN_INFO pinInfo;
 595
 596     EnterCriticalSection(This->pin.pCritSec);
 597     {
 598         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 599             hr = VFW_E_NOT_CONNECTED;
 600         else
 601         {
 602             /* we don't have the lock held when using This->pMemInputPin,
 603              * so we need to AddRef it to stop it being deleted while we are
 604              * using it. Same with its filter. */
 605             pMemConnected = This->pMemInputPin;
 606             IMemInputPin_AddRef(pMemConnected);
 607             hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo);
 608         }
 609     }
 610     LeaveCriticalSection(This->pin.pCritSec);
 611
 612     if (SUCCEEDED(hr))
 613     {
 614         /* NOTE: if we are in a critical section when Receive is called
 615          * then it causes some problems (most notably with the native Video
 616          * Renderer) if we are re-entered for whatever reason */
 617         hr = IMemInputPin_Receive(pMemConnected, pSample);
 618
 619         /* If the filter's destroyed, tell upstream to stop sending data */
 620         if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr))
 621             hr = S_FALSE;
 622     }
 623     if (pMemConnected)
 624         IMemInputPin_Release(pMemConnected);
 625
 626     return hr;
 627 }
 628
 629 /* replaces OutputPin_CommitAllocator */
 630 HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This)
 631 {
 632     HRESULT hr = S_OK;
 633
 634     TRACE("(%p)->()\n", This);
 635
 636     EnterCriticalSection(This->pin.pCritSec);
 637     {
 638         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 639             hr = VFW_E_NOT_CONNECTED;
 640         else
 641             hr = IMemAllocator_Commit(This->pAllocator);
 642     }
 643     LeaveCriticalSection(This->pin.pCritSec);
 644
 645     TRACE("--> %08x\n", hr);
 646     return hr;
 647 }
 648
 649 /* replaces OutputPin_DecommitAllocator */
 650 HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This)
 651 {
 652     HRESULT hr = S_OK;
 653
 654     TRACE("(%p)->()\n", This);
 655
 656     EnterCriticalSection(This->pin.pCritSec);
 657     {
 658         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 659             hr = VFW_E_NOT_CONNECTED;
 660         else
 661             hr = IMemAllocator_Decommit(This->pAllocator);
 662     }
 663     LeaveCriticalSection(This->pin.pCritSec);
 664
 665     TRACE("--> %08x\n", hr);
 666     return hr;
 667 }
 668
 669 /* replaces OutputPin_DeliverDisconnect */
 670 HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This)
 671 {
 672     HRESULT hr;
 673
 674     TRACE("(%p)->()\n", This);
 675
 676     EnterCriticalSection(This->pin.pCritSec);
 677     {
 678         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 679             hr = VFW_E_NOT_CONNECTED;
 680         else
 681         {
 682             hr = IMemAllocator_Decommit(This->pAllocator);
 683
 684             if (SUCCEEDED(hr))
 685                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 686         }
 687         IPin_Disconnect(&This->pin.IPin_iface);
 688     }
 689     LeaveCriticalSection(This->pin.pCritSec);
 690
 691     return hr;
 692 }
 693
 694 HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc)
 695 {
 696     return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc);
 697 }
 698
 699 HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc)
 700 {
 701     HRESULT hr;
 702
 703     hr = IMemInputPin_GetAllocator(pPin, pAlloc);
 704
 705     if (hr == VFW_E_NO_ALLOCATOR)
 706         /* Input pin provides no allocator, use standard memory allocator */
 707         hr = BaseOutputPinImpl_InitAllocator(This, pAlloc);
 708
 709     if (SUCCEEDED(hr))
 710     {
 711         ALLOCATOR_PROPERTIES rProps;
 712         ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES));
 713
 714         IMemInputPin_GetAllocatorRequirements(pPin, &rProps);
 715         hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps);
 716     }
 717
 718     if (SUCCEEDED(hr))
 719         hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE);
 720
 721     return hr;
 722 }
 723
 724 /*** The Construct functions ***/
 725
 726 /* Function called as a helper to IPin_Connect */
 727 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 728 HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 729 {
 730     BaseOutputPin *This = impl_BaseOutputPin_from_BasePin(iface);
 731     HRESULT hr;
 732     IMemAllocator * pMemAlloc = NULL;
 733
 734     TRACE("(%p, %p)\n", pReceivePin, pmt);
 735     dump_AM_MEDIA_TYPE(pmt);
 736
 737     /* FIXME: call queryacceptproc */
 738
 739     This->pin.pConnectedTo = pReceivePin;
 740     IPin_AddRef(pReceivePin);
 741     CopyMediaType(&This->pin.mtCurrent, pmt);
 742
 743     hr = IPin_ReceiveConnection(pReceivePin, &iface->IPin_iface, pmt);
 744
 745     /* get the IMemInputPin interface we will use to deliver samples to the
 746      * connected pin */
 747     if (SUCCEEDED(hr))
 748     {
 749         This->pMemInputPin = NULL;
 750         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 751
 752         if (SUCCEEDED(hr))
 753         {
 754             hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc);
 755             if (SUCCEEDED(hr))
 756                 This->pAllocator = pMemAlloc;
 757             else if (pMemAlloc)
 758                 IMemAllocator_Release(pMemAlloc);
 759         }
 760
 761         /* break connection if we couldn't get the allocator */
 762         if (FAILED(hr))
 763         {
 764             if (This->pMemInputPin)
 765                 IMemInputPin_Release(This->pMemInputPin);
 766             This->pMemInputPin = NULL;
 767
 768             IPin_Disconnect(pReceivePin);
 769         }
 770     }
 771
 772     if (FAILED(hr))
 773     {
 774         IPin_Release(This->pin.pConnectedTo);
 775         This->pin.pConnectedTo = NULL;
 776         FreeMediaType(&This->pin.mtCurrent);
 777     }
 778
 779     TRACE(" -- %x\n", hr);
 780     return hr;
 781 }
 782
 783 static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable,  LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl)
 784 {
 785     TRACE("\n");
 786
 787     /* Common attributes */
 788     pPinImpl->pin.IPin_iface.lpVtbl = OutputPin_Vtbl;
 789     pPinImpl->pin.refCount = 1;
 790     pPinImpl->pin.pConnectedTo = NULL;
 791     pPinImpl->pin.pCritSec = pCritSec;
 792     pPinImpl->pin.tStart = 0;
 793     pPinImpl->pin.tStop = 0;
 794     pPinImpl->pin.dRate = 1.0;
 795     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 796     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
 797     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 798
 799     /* Output pin attributes */
 800     pPinImpl->pMemInputPin = NULL;
 801     pPinImpl->pAllocator = NULL;
 802     pPinImpl->pFuncsTable = pBaseOutputFuncsTable;
 803
 804     return S_OK;
 805 }
 806
 807 HRESULT WINAPI BaseOutputPin_Construct(const IPinVtbl *OutputPin_Vtbl, LONG outputpin_size, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable, LPCRITICAL_SECTION pCritSec, IPin ** ppPin)
 808 {
 809     BaseOutputPin * pPinImpl;
 810
 811     *ppPin = NULL;
 812
 813     if (pPinInfo->dir != PINDIR_OUTPUT)
 814     {
 815         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 816         return E_INVALIDARG;
 817     }
 818
 819     assert(outputpin_size >= sizeof(BaseOutputPin));
 820     assert(pBaseFuncsTable->pfnAttemptConnection);
 821
 822     pPinImpl = CoTaskMemAlloc(outputpin_size);
 823
 824     if (!pPinImpl)
 825         return E_OUTOFMEMORY;
 826
 827     if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl)))
 828     {
 829         *ppPin = &pPinImpl->pin.IPin_iface;
 830         return S_OK;
 831     }
 832
 833     CoTaskMemFree(pPinImpl);
 834     return E_FAIL;
 835 }
 836
 837 /*** Input Pin implementation ***/
 838
 839 static inline BaseInputPin *impl_BaseInputPin_from_IPin( IPin *iface )
 840 {
 841     return CONTAINING_RECORD(iface, BaseInputPin, pin.IPin_iface);
 842 }
 843
 844 static inline BaseInputPin *impl_BaseInputPin_from_BasePin( BasePin *iface )
 845 {
 846     return CONTAINING_RECORD(iface, BaseInputPin, pin);
 847 }
 848
 849 HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 850 {
 851     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 852
 853     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 854
 855     *ppv = NULL;
 856
 857     if (IsEqualIID(riid, &IID_IUnknown))
 858         *ppv = iface;
 859     else if (IsEqualIID(riid, &IID_IPin))
 860         *ppv = iface;
 861     else if (IsEqualIID(riid, &IID_IMemInputPin))
 862         *ppv = &This->IMemInputPin_iface;
 863     else if (IsEqualIID(riid, &IID_IMediaSeeking))
 864     {
 865         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv);
 866     }
 867
 868     if (*ppv)
 869     {
 870         IUnknown_AddRef((IUnknown *)(*ppv));
 871         return S_OK;
 872     }
 873
 874     FIXME("No interface for %s!\n", debugstr_guid(riid));
 875
 876     return E_NOINTERFACE;
 877 }
 878
 879 ULONG WINAPI BaseInputPinImpl_Release(IPin * iface)
 880 {
 881     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 882     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 883
 884     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 885
 886     if (!refCount)
 887     {
 888         FreeMediaType(&This->pin.mtCurrent);
 889         if (This->pAllocator)
 890             IMemAllocator_Release(This->pAllocator);
 891         This->pAllocator = NULL;
 892         This->pin.IPin_iface.lpVtbl = NULL;
 893         CoTaskMemFree(This);
 894         return 0;
 895     }
 896     else
 897         return refCount;
 898 }
 899
 900 HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt)
 901 {
 902     ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt);
 903
 904     return E_UNEXPECTED;
 905 }
 906
 907
 908 HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 909 {
 910     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 911     PIN_DIRECTION pindirReceive;
 912     HRESULT hr = S_OK;
 913
 914     TRACE("(%p, %p)\n", pReceivePin, pmt);
 915     dump_AM_MEDIA_TYPE(pmt);
 916
 917     EnterCriticalSection(This->pin.pCritSec);
 918     {
 919         if (This->pin.pConnectedTo)
 920             hr = VFW_E_ALREADY_CONNECTED;
 921
 922         if (SUCCEEDED(hr) && This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, pmt) != S_OK)
 923             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 924                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 925
 926         if (SUCCEEDED(hr))
 927         {
 928             IPin_QueryDirection(pReceivePin, &pindirReceive);
 929
 930             if (pindirReceive != PINDIR_OUTPUT)
 931             {
 932                 ERR("Can't connect from non-output pin\n");
 933                 hr = VFW_E_INVALID_DIRECTION;
 934             }
 935         }
 936
 937         if (SUCCEEDED(hr))
 938         {
 939             CopyMediaType(&This->pin.mtCurrent, pmt);
 940             This->pin.pConnectedTo = pReceivePin;
 941             IPin_AddRef(pReceivePin);
 942         }
 943     }
 944     LeaveCriticalSection(This->pin.pCritSec);
 945
 946     return hr;
 947 }
 948
 949 static HRESULT deliver_endofstream(IPin* pin, LPVOID unused)
 950 {
 951     return IPin_EndOfStream( pin );
 952 }
 953
 954 HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 955 {
 956     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 957
 958     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 959
 960     return (This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, pmt) == S_OK ? S_OK : S_FALSE);
 961 }
 962
 963 HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface)
 964 {
 965     HRESULT hr = S_OK;
 966     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 967
 968     TRACE("(%p)\n", This);
 969
 970     EnterCriticalSection(This->pin.pCritSec);
 971     if (This->flushing)
 972         hr = S_FALSE;
 973     else
 974         This->end_of_stream = 1;
 975     LeaveCriticalSection(This->pin.pCritSec);
 976
 977     if (hr == S_OK)
 978         hr = SendFurther( iface, deliver_endofstream, NULL, NULL );
 979     return hr;
 980 }
 981
 982 static HRESULT deliver_beginflush(IPin* pin, LPVOID unused)
 983 {
 984     return IPin_BeginFlush( pin );
 985 }
 986
 987 HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface)
 988 {
 989     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 990     HRESULT hr;
 991     TRACE("() semi-stub\n");
 992
 993     EnterCriticalSection(This->pin.pCritSec);
 994     This->flushing = 1;
 995
 996     hr = SendFurther( iface, deliver_beginflush, NULL, NULL );
 997     LeaveCriticalSection(This->pin.pCritSec);
 998
 999     return hr;
1000 }
1001
1002 static HRESULT deliver_endflush(IPin* pin, LPVOID unused)
1003 {
1004     return IPin_EndFlush( pin );
1005 }
1006
1007 HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface)
1008 {
1009     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1010     HRESULT hr;
1011     TRACE("(%p)\n", This);
1012
1013     EnterCriticalSection(This->pin.pCritSec);
1014     This->flushing = This->end_of_stream = 0;
1015
1016     hr = SendFurther( iface, deliver_endflush, NULL, NULL );
1017     LeaveCriticalSection(This->pin.pCritSec);
1018
1019     return hr;
1020 }
1021
1022 typedef struct newsegmentargs
1023 {
1024     REFERENCE_TIME tStart, tStop;
1025     double rate;
1026 } newsegmentargs;
1027
1028 static HRESULT deliver_newsegment(IPin *pin, LPVOID data)
1029 {
1030     newsegmentargs *args = data;
1031     return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate);
1032 }
1033
1034 HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
1035 {
1036     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1037     newsegmentargs args;
1038
1039     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
1040
1041     args.tStart = This->pin.tStart = tStart;
1042     args.tStop = This->pin.tStop = tStop;
1043     args.rate = This->pin.dRate = dRate;
1044
1045     return SendFurther( iface, deliver_newsegment, &args, NULL );
1046 }
1047
1048 static const IPinVtbl InputPin_Vtbl =
1049 {
1050     BaseInputPinImpl_QueryInterface,
1051     BasePinImpl_AddRef,
1052     BaseInputPinImpl_Release,
1053     BaseInputPinImpl_Connect,
1054     BaseInputPinImpl_ReceiveConnection,
1055     BasePinImpl_Disconnect,
1056     BasePinImpl_ConnectedTo,
1057     BasePinImpl_ConnectionMediaType,
1058     BasePinImpl_QueryPinInfo,
1059     BasePinImpl_QueryDirection,
1060     BasePinImpl_QueryId,
1061     BaseInputPinImpl_QueryAccept,
1062     BasePinImpl_EnumMediaTypes,
1063     BasePinImpl_QueryInternalConnections,
1064     BaseInputPinImpl_EndOfStream,
1065     BaseInputPinImpl_BeginFlush,
1066     BaseInputPinImpl_EndFlush,
1067     BaseInputPinImpl_NewSegment
1068 };
1069
1070 /*** IMemInputPin implementation ***/
1071
1072 static inline BaseInputPin *impl_from_IMemInputPin( IMemInputPin *iface )
1073 {
1074     return CONTAINING_RECORD(iface, BaseInputPin, IMemInputPin_iface);
1075 }
1076
1077 static HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv)
1078 {
1079     BaseInputPin *This = impl_from_IMemInputPin(iface);
1080
1081     return IPin_QueryInterface(&This->pin.IPin_iface, riid, ppv);
1082 }
1083
1084 static ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface)
1085 {
1086     BaseInputPin *This = impl_from_IMemInputPin(iface);
1087
1088     return IPin_AddRef(&This->pin.IPin_iface);
1089 }
1090
1091 static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
1092 {
1093     BaseInputPin *This = impl_from_IMemInputPin(iface);
1094
1095     return IPin_Release(&This->pin.IPin_iface);
1096 }
1097
1098 static HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator)
1099 {
1100     BaseInputPin *This = impl_from_IMemInputPin(iface);
1101
1102     TRACE("(%p/%p)->(%p)\n", This, iface, ppAllocator);
1103
1104     *ppAllocator = This->pAllocator;
1105     if (*ppAllocator)
1106         IMemAllocator_AddRef(*ppAllocator);
1107
1108     return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR;
1109 }
1110
1111 static HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly)
1112 {
1113     BaseInputPin *This = impl_from_IMemInputPin(iface);
1114
1115     TRACE("(%p/%p)->(%p, %d)\n", This, iface, pAllocator, bReadOnly);
1116
1117     if (bReadOnly)
1118         FIXME("Read only flag not handled yet!\n");
1119
1120     /* FIXME: Should we release the allocator on disconnection? */
1121     if (!pAllocator)
1122     {
1123         WARN("Null allocator\n");
1124         return E_POINTER;
1125     }
1126
1127     if (This->preferred_allocator && pAllocator != This->preferred_allocator)
1128         return E_FAIL;
1129
1130     if (This->pAllocator)
1131         IMemAllocator_Release(This->pAllocator);
1132     This->pAllocator = pAllocator;
1133     if (This->pAllocator)
1134         IMemAllocator_AddRef(This->pAllocator);
1135
1136     return S_OK;
1137 }
1138
1139 static HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps)
1140 {
1141     BaseInputPin *This = impl_from_IMemInputPin(iface);
1142
1143     TRACE("(%p/%p)->(%p)\n", This, iface, pProps);
1144
1145     /* override this method if you have any specific requirements */
1146
1147     return E_NOTIMPL;
1148 }
1149
1150 static HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample)
1151 {
1152     BaseInputPin *This = impl_from_IMemInputPin(iface);
1153     HRESULT hr = S_FALSE;
1154
1155     /* this trace commented out for performance reasons */
1156     /*TRACE("(%p/%p)->(%p)\n", This, iface, pSample);*/
1157     if (This->pFuncsTable->pfnReceive)
1158         hr = This->pFuncsTable->pfnReceive(This, pSample);
1159     return hr;
1160 }
1161
1162 static HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, LONG nSamples, LONG *nSamplesProcessed)
1163 {
1164     HRESULT hr = S_OK;
1165     BaseInputPin *This = impl_from_IMemInputPin(iface);
1166
1167     TRACE("(%p/%p)->(%p, %d, %p)\n", This, iface, pSamples, nSamples, nSamplesProcessed);
1168
1169     for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++)
1170     {
1171         hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]);
1172         if (hr != S_OK)
1173             break;
1174     }
1175
1176     return hr;
1177 }
1178
1179 static HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface)
1180 {
1181     BaseInputPin *This = impl_from_IMemInputPin(iface);
1182
1183     TRACE("(%p/%p)->()\n", This, iface);
1184
1185     return S_OK;
1186 }
1187
1188 static const IMemInputPinVtbl MemInputPin_Vtbl =
1189 {
1190     MemInputPin_QueryInterface,
1191     MemInputPin_AddRef,
1192     MemInputPin_Release,
1193     MemInputPin_GetAllocator,
1194     MemInputPin_NotifyAllocator,
1195     MemInputPin_GetAllocatorRequirements,
1196     MemInputPin_Receive,
1197     MemInputPin_ReceiveMultiple,
1198     MemInputPin_ReceiveCanBlock
1199 };
1200
1201 static HRESULT InputPin_Init(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1202                              const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1203                              LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, BaseInputPin * pPinImpl)
1204 {
1205     TRACE("\n");
1206
1207     /* Common attributes */
1208     pPinImpl->pin.refCount = 1;
1209     pPinImpl->pin.pConnectedTo = NULL;
1210     pPinImpl->pin.pCritSec = pCritSec;
1211     pPinImpl->pin.tStart = 0;
1212     pPinImpl->pin.tStop = 0;
1213     pPinImpl->pin.dRate = 1.0;
1214     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1215     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
1216     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
1217
1218     /* Input pin attributes */
1219     pPinImpl->pFuncsTable = pBaseInputFuncsTable;
1220     pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator;
1221     if (pPinImpl->preferred_allocator)
1222         IMemAllocator_AddRef(pPinImpl->preferred_allocator);
1223     pPinImpl->pin.IPin_iface.lpVtbl = InputPin_Vtbl;
1224     pPinImpl->IMemInputPin_iface.lpVtbl = &MemInputPin_Vtbl;
1225     pPinImpl->flushing = pPinImpl->end_of_stream = 0;
1226
1227     return S_OK;
1228 }
1229
1230 HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1231                                const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1232                                LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, IPin ** ppPin)
1233 {
1234     BaseInputPin * pPinImpl;
1235
1236     *ppPin = NULL;
1237
1238     assert(pBaseFuncsTable->pfnCheckMediaType);
1239
1240     if (pPinInfo->dir != PINDIR_INPUT)
1241     {
1242         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
1243         return E_INVALIDARG;
1244     }
1245
1246     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
1247
1248     if (!pPinImpl)
1249         return E_OUTOFMEMORY;
1250
1251     if (SUCCEEDED(InputPin_Init(InputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseInputFuncsTable, pCritSec, allocator, pPinImpl)))
1252     {
1253         *ppPin = (IPin *)pPinImpl;
1254         return S_OK;
1255     }
1256
1257     CoTaskMemFree(pPinImpl);
1258     return E_FAIL;
1259 }