git.oblomov.eu Git - wine/blob - dlls/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 #define COBJMACROS
  23
  24 #include "dshow.h"
  25 #include "wine/debug.h"
  26 #include "wine/unicode.h"
  27 #include "wine/strmbase.h"
  28 #include "uuids.h"
  29 #include "vfwmsgs.h"
  30 #include <assert.h>
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
  33
  34 static const IPinVtbl InputPin_Vtbl;
  35 static const IPinVtbl OutputPin_Vtbl;
  36 static const IMemInputPinVtbl MemInputPin_Vtbl;
  37
  38 typedef HRESULT (*SendPinFunc)( IPin *to, LPVOID arg );
  39
  40 /** Helper function, there are a lot of places where the error code is inherited
  41  * The following rules apply:
  42  *
  43  * Return the first received error code (E_NOTIMPL is ignored)
  44  * If no errors occur: return the first received non-error-code that isn't S_OK
  45  */
  46 static HRESULT updatehres( HRESULT original, HRESULT new )
  47 {
  48     if (FAILED( original ) || new == E_NOTIMPL)
  49         return original;
  50
  51     if (FAILED( new ) || original == S_OK)
  52         return new;
  53
  54     return original;
  55 }
  56
  57 /** Sends a message from a pin further to other, similar pins
  58  * fnMiddle is called on each pin found further on the stream.
  59  * fnEnd (can be NULL) is called when the message can't be sent any further (this is a renderer or source)
  60  *
  61  * If the pin given is an input pin, the message will be sent downstream to other input pins
  62  * If the pin given is an output pin, the message will be sent upstream to other output pins
  63  */
  64 static HRESULT SendFurther( IPin *from, SendPinFunc fnMiddle, LPVOID arg, SendPinFunc fnEnd )
  65 {
  66     PIN_INFO pin_info;
  67     ULONG amount = 0;
  68     HRESULT hr = S_OK;
  69     HRESULT hr_return = S_OK;
  70     IEnumPins *enumpins = NULL;
  71     BOOL foundend = TRUE;
  72     PIN_DIRECTION from_dir;
  73
  74     IPin_QueryDirection( from, &from_dir );
  75
  76     hr = IPin_QueryInternalConnections( from, NULL, &amount );
  77     if (hr != E_NOTIMPL && amount)
  78         FIXME("Use QueryInternalConnections!\n");
  79      hr = S_OK;
  80
  81     pin_info.pFilter = NULL;
  82     hr = IPin_QueryPinInfo( from, &pin_info );
  83     if (FAILED(hr))
  84         goto out;
  85
  86     hr = IBaseFilter_EnumPins( pin_info.pFilter, &enumpins );
  87     if (FAILED(hr))
  88         goto out;
  89
  90     hr = IEnumPins_Reset( enumpins );
  91     while (hr == S_OK) {
  92         IPin *pin = NULL;
  93         hr = IEnumPins_Next( enumpins, 1, &pin, NULL );
  94         if (hr == VFW_E_ENUM_OUT_OF_SYNC)
  95         {
  96             hr = IEnumPins_Reset( enumpins );
  97             continue;
  98         }
  99         if (pin)
 100         {
 101             PIN_DIRECTION dir;
 102
 103             IPin_QueryDirection( pin, &dir );
 104             if (dir != from_dir)
 105             {
 106                 IPin *connected = NULL;
 107
 108                 foundend = FALSE;
 109                 IPin_ConnectedTo( pin, &connected );
 110                 if (connected)
 111                 {
 112                     HRESULT hr_local;
 113
 114                     hr_local = fnMiddle( connected, arg );
 115                     hr_return = updatehres( hr_return, hr_local );
 116                     IPin_Release(connected);
 117                 }
 118             }
 119             IPin_Release( pin );
 120         }
 121         else
 122         {
 123             hr = S_OK;
 124             break;
 125         }
 126     }
 127
 128     if (!foundend)
 129         hr = hr_return;
 130     else if (fnEnd) {
 131         HRESULT hr_local;
 132
 133         hr_local = fnEnd( from, arg );
 134         hr_return = updatehres( hr_return, hr_local );
 135     }
 136
 137 out:
 138     if (pin_info.pFilter)
 139         IBaseFilter_Release( pin_info.pFilter );
 140     return hr;
 141 }
 142
 143 static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
 144 {
 145     /* Tempting to just do a memcpy, but the name field is
 146        128 characters long! We will probably never exceed 10
 147        most of the time, so we are better off copying
 148        each field manually */
 149     strcpyW(pDest->achName, pSrc->achName);
 150     pDest->dir = pSrc->dir;
 151     pDest->pFilter = pSrc->pFilter;
 152 }
 153
 154 static void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE * pmt)
 155 {
 156     if (!pmt)
 157         return;
 158     TRACE("\t%s\n\t%s\n\t...\n\t%s\n", debugstr_guid(&pmt->majortype), debugstr_guid(&pmt->subtype), debugstr_guid(&pmt->formattype));
 159 }
 160
 161 static BOOL CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, BOOL bWildcards)
 162 {
 163     TRACE("pmt1: ");
 164     dump_AM_MEDIA_TYPE(pmt1);
 165     TRACE("pmt2: ");
 166     dump_AM_MEDIA_TYPE(pmt2);
 167     return (((bWildcards && (IsEqualGUID(&pmt1->majortype, &GUID_NULL) || IsEqualGUID(&pmt2->majortype, &GUID_NULL))) || IsEqualGUID(&pmt1->majortype, &pmt2->majortype)) &&
 168             ((bWildcards && (IsEqualGUID(&pmt1->subtype, &GUID_NULL)   || IsEqualGUID(&pmt2->subtype, &GUID_NULL)))   || IsEqualGUID(&pmt1->subtype, &pmt2->subtype)));
 169 }
 170
 171 /*** Common Base Pin function */
 172 HRESULT WINAPI BasePinImpl_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
 173 {
 174     if (iPosition < 0)
 175         return E_INVALIDARG;
 176     return VFW_S_NO_MORE_ITEMS;
 177 }
 178
 179 LONG WINAPI BasePinImpl_GetMediaTypeVersion(BasePin *iface)
 180 {
 181     return 1;
 182 }
 183
 184 ULONG WINAPI BasePinImpl_AddRef(IPin * iface)
 185 {
 186     BasePin *This = (BasePin *)iface;
 187     ULONG refCount = InterlockedIncrement(&This->refCount);
 188
 189     TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1);
 190
 191     return refCount;
 192 }
 193
 194 HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface)
 195 {
 196     HRESULT hr;
 197     BasePin *This = (BasePin *)iface;
 198
 199     TRACE("()\n");
 200
 201     EnterCriticalSection(This->pCritSec);
 202     {
 203         if (This->pConnectedTo)
 204         {
 205             IPin_Release(This->pConnectedTo);
 206             This->pConnectedTo = NULL;
 207             FreeMediaType(&This->mtCurrent);
 208             ZeroMemory(&This->mtCurrent, sizeof(This->mtCurrent));
 209             hr = S_OK;
 210         }
 211         else
 212             hr = S_FALSE;
 213     }
 214     LeaveCriticalSection(This->pCritSec);
 215
 216     return hr;
 217 }
 218
 219 HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
 220 {
 221     HRESULT hr;
 222     BasePin *This = (BasePin *)iface;
 223
 224     TRACE("(%p)\n", ppPin);
 225
 226     EnterCriticalSection(This->pCritSec);
 227     {
 228         if (This->pConnectedTo)
 229         {
 230             *ppPin = This->pConnectedTo;
 231             IPin_AddRef(*ppPin);
 232             hr = S_OK;
 233         }
 234         else
 235         {
 236             hr = VFW_E_NOT_CONNECTED;
 237             *ppPin = NULL;
 238         }
 239     }
 240     LeaveCriticalSection(This->pCritSec);
 241
 242     return hr;
 243 }
 244
 245 HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
 246 {
 247     HRESULT hr;
 248     BasePin *This = (BasePin *)iface;
 249
 250     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 251
 252     EnterCriticalSection(This->pCritSec);
 253     {
 254         if (This->pConnectedTo)
 255         {
 256             CopyMediaType(pmt, &This->mtCurrent);
 257             hr = S_OK;
 258         }
 259         else
 260         {
 261             ZeroMemory(pmt, sizeof(*pmt));
 262             hr = VFW_E_NOT_CONNECTED;
 263         }
 264     }
 265     LeaveCriticalSection(This->pCritSec);
 266
 267     return hr;
 268 }
 269
 270 HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
 271 {
 272     BasePin *This = (BasePin *)iface;
 273
 274     TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
 275
 276     Copy_PinInfo(pInfo, &This->pinInfo);
 277     IBaseFilter_AddRef(pInfo->pFilter);
 278
 279     return S_OK;
 280 }
 281
 282 HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
 283 {
 284     BasePin *This = (BasePin *)iface;
 285
 286     TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
 287
 288     *pPinDir = This->pinInfo.dir;
 289
 290     return S_OK;
 291 }
 292
 293 HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id)
 294 {
 295     BasePin *This = (BasePin *)iface;
 296
 297     TRACE("(%p/%p)->(%p)\n", This, iface, Id);
 298
 299     *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
 300     if (!*Id)
 301         return E_OUTOFMEMORY;
 302
 303     strcpyW(*Id, This->pinInfo.achName);
 304
 305     return S_OK;
 306 }
 307
 308 HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 309 {
 310     TRACE("(%p)->(%p)\n", iface, pmt);
 311
 312     return S_OK;
 313 }
 314
 315 HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 316 {
 317     BasePin *This = (BasePin *)iface;
 318
 319     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 320
 321     /* override this method to allow enumeration of your types */
 322
 323     return EnumMediaTypes_Construct(This, This->pFuncsTable->pfnGetMediaType, This->pFuncsTable->pfnGetMediaTypeVersion , ppEnum);
 324 }
 325
 326 HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
 327 {
 328     BasePin *This = (BasePin *)iface;
 329
 330     TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
 331
 332     return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
 333 }
 334
 335 /*** OutputPin implementation ***/
 336
 337 HRESULT WINAPI BaseOutputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 338 {
 339     BaseOutputPin *This = (BaseOutputPin *)iface;
 340
 341     TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv);
 342
 343     *ppv = NULL;
 344
 345     if (IsEqualIID(riid, &IID_IUnknown))
 346         *ppv = iface;
 347     else if (IsEqualIID(riid, &IID_IPin))
 348         *ppv = iface;
 349     else if (IsEqualIID(riid, &IID_IMediaSeeking))
 350     {
 351         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv);
 352     }
 353
 354     if (*ppv)
 355     {
 356         IUnknown_AddRef((IUnknown *)(*ppv));
 357         return S_OK;
 358     }
 359
 360     FIXME("No interface for %s!\n", debugstr_guid(riid));
 361
 362     return E_NOINTERFACE;
 363 }
 364
 365 ULONG WINAPI BaseOutputPinImpl_Release(IPin * iface)
 366 {
 367     BaseOutputPin *This = (BaseOutputPin *)iface;
 368     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 369
 370     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 371
 372     if (!refCount)
 373     {
 374         FreeMediaType(&This->pin.mtCurrent);
 375         CoTaskMemFree(This);
 376         return 0;
 377     }
 378     return refCount;
 379 }
 380
 381 HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 382 {
 383     HRESULT hr;
 384     BaseOutputPin *This = (BaseOutputPin *)iface;
 385
 386     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 387     dump_AM_MEDIA_TYPE(pmt);
 388
 389     /* If we try to connect to ourself, we will definitely deadlock.
 390      * There are other cases where we could deadlock too, but this
 391      * catches the obvious case */
 392     assert(pReceivePin != iface);
 393
 394     EnterCriticalSection(This->pin.pCritSec);
 395     {
 396         /* if we have been a specific type to connect with, then we can either connect
 397          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 398         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 399             hr = This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmt);
 400         else
 401         {
 402             /* negotiate media type */
 403
 404             IEnumMediaTypes * pEnumCandidates;
 405             AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */
 406
 407             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 408             {
 409                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 410
 411                 /* try this filter's media types first */
 412                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 413                 {
 414                     assert(pmtCandidate);
 415                     dump_AM_MEDIA_TYPE(pmtCandidate);
 416                     if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype)
 417                         && !IsEqualGUID(&GUID_NULL, &pmtCandidate->formattype))
 418                         assert(pmtCandidate->pbFormat);
 419                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 420                         (This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmtCandidate) == S_OK))
 421                     {
 422                         hr = S_OK;
 423                         DeleteMediaType(pmtCandidate);
 424                         break;
 425                     }
 426                     DeleteMediaType(pmtCandidate);
 427                     pmtCandidate = NULL;
 428                 }
 429                 IEnumMediaTypes_Release(pEnumCandidates);
 430             }
 431
 432             /* then try receiver filter's media types */
 433             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 434             {
 435                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 436
 437                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 438                 {
 439                     assert(pmtCandidate);
 440                     dump_AM_MEDIA_TYPE(pmtCandidate);
 441                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 442                         (This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmtCandidate) == S_OK))
 443                     {
 444                         hr = S_OK;
 445                         DeleteMediaType(pmtCandidate);
 446                         break;
 447                     }
 448                     DeleteMediaType(pmtCandidate);
 449                     pmtCandidate = NULL;
 450                 } /* while */
 451                 IEnumMediaTypes_Release(pEnumCandidates);
 452             } /* if not found */
 453         } /* if negotiate media type */
 454     } /* if succeeded */
 455     LeaveCriticalSection(This->pin.pCritSec);
 456
 457     TRACE(" -- %x\n", hr);
 458     return hr;
 459 }
 460
 461 HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 462 {
 463     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 464
 465     return E_UNEXPECTED;
 466 }
 467
 468 HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface)
 469 {
 470     HRESULT hr;
 471     BaseOutputPin *This = (BaseOutputPin *)iface;
 472
 473     TRACE("()\n");
 474
 475     EnterCriticalSection(This->pin.pCritSec);
 476     {
 477         if (This->pMemInputPin)
 478         {
 479             IMemInputPin_Release(This->pMemInputPin);
 480             This->pMemInputPin = NULL;
 481         }
 482         if (This->pin.pConnectedTo)
 483         {
 484             IPin_Release(This->pin.pConnectedTo);
 485             This->pin.pConnectedTo = NULL;
 486             FreeMediaType(&This->pin.mtCurrent);
 487             ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent));
 488             hr = S_OK;
 489         }
 490         else
 491             hr = S_FALSE;
 492     }
 493     LeaveCriticalSection(This->pin.pCritSec);
 494
 495     return hr;
 496 }
 497
 498 HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface)
 499 {
 500     TRACE("()\n");
 501
 502     /* not supposed to do anything in an output pin */
 503
 504     return E_UNEXPECTED;
 505 }
 506
 507 HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface)
 508 {
 509     TRACE("(%p)->()\n", iface);
 510
 511     /* not supposed to do anything in an output pin */
 512
 513     return E_UNEXPECTED;
 514 }
 515
 516 HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface)
 517 {
 518     TRACE("(%p)->()\n", iface);
 519
 520     /* not supposed to do anything in an output pin */
 521
 522     return E_UNEXPECTED;
 523 }
 524
 525 HRESULT WINAPI BaseOutputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 526 {
 527     TRACE("(%p)->(%x%08x, %x%08x, %e)\n", iface, (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
 528
 529     /* not supposed to do anything in an output pin */
 530
 531     return E_UNEXPECTED;
 532 }
 533
 534 static const IPinVtbl OutputPin_Vtbl =
 535 {
 536     BaseOutputPinImpl_QueryInterface,
 537     BasePinImpl_AddRef,
 538     BaseOutputPinImpl_Release,
 539     BaseOutputPinImpl_Connect,
 540     BaseOutputPinImpl_ReceiveConnection,
 541     BaseOutputPinImpl_Disconnect,
 542     BasePinImpl_ConnectedTo,
 543     BasePinImpl_ConnectionMediaType,
 544     BasePinImpl_QueryPinInfo,
 545     BasePinImpl_QueryDirection,
 546     BasePinImpl_QueryId,
 547     BasePinImpl_QueryAccept,
 548     BasePinImpl_EnumMediaTypes,
 549     BasePinImpl_QueryInternalConnections,
 550     BaseOutputPinImpl_EndOfStream,
 551     BaseOutputPinImpl_BeginFlush,
 552     BaseOutputPinImpl_EndFlush,
 553     BaseOutputPinImpl_NewSegment
 554 };
 555
 556 HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin *This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags)
 557 {
 558     HRESULT hr;
 559
 560     TRACE("(%p, %p, %p, %x)\n", ppSample, tStart, tStop, dwFlags);
 561
 562     EnterCriticalSection(This->pin.pCritSec);
 563     {
 564         if (!This->pin.pConnectedTo)
 565             hr = VFW_E_NOT_CONNECTED;
 566         else
 567         {
 568             IMemAllocator * pAlloc = NULL;
 569
 570             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 571
 572             if (SUCCEEDED(hr))
 573                 hr = IMemAllocator_GetBuffer(pAlloc, ppSample, tStart, tStop, dwFlags);
 574
 575             if (SUCCEEDED(hr))
 576                 hr = IMediaSample_SetTime(*ppSample, tStart, tStop);
 577
 578             if (pAlloc)
 579                 IMemAllocator_Release(pAlloc);
 580         }
 581     }
 582     LeaveCriticalSection(This->pin.pCritSec);
 583
 584     return hr;
 585 }
 586
 587 /* replaces OutputPin_SendSample */
 588 HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample)
 589 {
 590     HRESULT hr = S_OK;
 591     IMemInputPin * pMemConnected = NULL;
 592     PIN_INFO pinInfo;
 593
 594     EnterCriticalSection(This->pin.pCritSec);
 595     {
 596         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 597             hr = VFW_E_NOT_CONNECTED;
 598         else
 599         {
 600             /* we don't have the lock held when using This->pMemInputPin,
 601              * so we need to AddRef it to stop it being deleted while we are
 602              * using it. Same with its filter. */
 603             pMemConnected = This->pMemInputPin;
 604             IMemInputPin_AddRef(pMemConnected);
 605             hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo);
 606         }
 607     }
 608     LeaveCriticalSection(This->pin.pCritSec);
 609
 610     if (SUCCEEDED(hr))
 611     {
 612         /* NOTE: if we are in a critical section when Receive is called
 613          * then it causes some problems (most notably with the native Video
 614          * Renderer) if we are re-entered for whatever reason */
 615         hr = IMemInputPin_Receive(pMemConnected, pSample);
 616
 617         /* If the filter's destroyed, tell upstream to stop sending data */
 618         if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr))
 619             hr = S_FALSE;
 620     }
 621     if (pMemConnected)
 622         IMemInputPin_Release(pMemConnected);
 623
 624     return hr;
 625 }
 626
 627 /* replaces OutputPin_CommitAllocator */
 628 HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This)
 629 {
 630     HRESULT hr = S_OK;
 631
 632     TRACE("(%p)->()\n", This);
 633
 634     EnterCriticalSection(This->pin.pCritSec);
 635     {
 636         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 637             hr = VFW_E_NOT_CONNECTED;
 638         else
 639         {
 640             IMemAllocator * pAlloc = NULL;
 641
 642             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 643
 644             if (SUCCEEDED(hr))
 645                 hr = IMemAllocator_Commit(pAlloc);
 646
 647             if (pAlloc)
 648                 IMemAllocator_Release(pAlloc);
 649         }
 650     }
 651     LeaveCriticalSection(This->pin.pCritSec);
 652
 653     TRACE("--> %08x\n", hr);
 654     return hr;
 655 }
 656
 657 /* replaces OutputPin_DecommitAllocator */
 658 HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This)
 659 {
 660     HRESULT hr = S_OK;
 661
 662     TRACE("(%p)->()\n", This);
 663
 664     EnterCriticalSection(This->pin.pCritSec);
 665     {
 666         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 667             hr = VFW_E_NOT_CONNECTED;
 668         else
 669         {
 670             IMemAllocator * pAlloc = NULL;
 671
 672             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 673
 674             if (SUCCEEDED(hr))
 675                 hr = IMemAllocator_Decommit(pAlloc);
 676
 677             if (pAlloc)
 678                 IMemAllocator_Release(pAlloc);
 679         }
 680     }
 681     LeaveCriticalSection(This->pin.pCritSec);
 682
 683     TRACE("--> %08x\n", hr);
 684     return hr;
 685 }
 686
 687 /* replaces OutputPin_DeliverDisconnect */
 688 HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This)
 689 {
 690     HRESULT hr;
 691
 692     TRACE("(%p)->()\n", This);
 693
 694     EnterCriticalSection(This->pin.pCritSec);
 695     {
 696         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 697             hr = VFW_E_NOT_CONNECTED;
 698         else
 699         {
 700             IMemAllocator * pAlloc = NULL;
 701
 702             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 703
 704             if (SUCCEEDED(hr))
 705                 hr = IMemAllocator_Decommit(pAlloc);
 706
 707             if (pAlloc)
 708                 IMemAllocator_Release(pAlloc);
 709
 710             if (SUCCEEDED(hr))
 711                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 712         }
 713         IPin_Disconnect((IPin *)This);
 714     }
 715     LeaveCriticalSection(This->pin.pCritSec);
 716
 717     return hr;
 718 }
 719
 720 HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc)
 721 {
 722     return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc);
 723 }
 724
 725 HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc)
 726 {
 727     HRESULT hr;
 728
 729     hr = IMemInputPin_GetAllocator(pPin, pAlloc);
 730
 731     if (hr == VFW_E_NO_ALLOCATOR)
 732         /* Input pin provides no allocator, use standard memory allocator */
 733         hr = BaseOutputPinImpl_InitAllocator(This, pAlloc);
 734
 735     if (SUCCEEDED(hr))
 736     {
 737         ALLOCATOR_PROPERTIES rProps;
 738         ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES));
 739
 740         IMemInputPin_GetAllocatorRequirements(pPin, &rProps);
 741         hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps);
 742     }
 743
 744     if (SUCCEEDED(hr))
 745         hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE);
 746
 747     return hr;
 748 }
 749
 750 /*** The Construct functions ***/
 751
 752 /* Function called as a helper to IPin_Connect */
 753 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 754 HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 755 {
 756     BaseOutputPin *This = (BaseOutputPin *)iface;
 757     HRESULT hr;
 758     IMemAllocator * pMemAlloc = NULL;
 759
 760     TRACE("(%p, %p)\n", pReceivePin, pmt);
 761     dump_AM_MEDIA_TYPE(pmt);
 762
 763     /* FIXME: call queryacceptproc */
 764
 765     This->pin.pConnectedTo = pReceivePin;
 766     IPin_AddRef(pReceivePin);
 767     CopyMediaType(&This->pin.mtCurrent, pmt);
 768
 769     hr = IPin_ReceiveConnection(pReceivePin, (IPin*)iface, pmt);
 770
 771     /* get the IMemInputPin interface we will use to deliver samples to the
 772      * connected pin */
 773     if (SUCCEEDED(hr))
 774     {
 775         This->pMemInputPin = NULL;
 776         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 777
 778         if (SUCCEEDED(hr))
 779         {
 780             hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc);
 781             if (pMemAlloc)
 782                 IMemAllocator_Release(pMemAlloc);
 783         }
 784
 785         /* break connection if we couldn't get the allocator */
 786         if (FAILED(hr))
 787         {
 788             if (This->pMemInputPin)
 789                 IMemInputPin_Release(This->pMemInputPin);
 790             This->pMemInputPin = NULL;
 791
 792             IPin_Disconnect(pReceivePin);
 793         }
 794     }
 795
 796     if (FAILED(hr))
 797     {
 798         IPin_Release(This->pin.pConnectedTo);
 799         This->pin.pConnectedTo = NULL;
 800         FreeMediaType(&This->pin.mtCurrent);
 801     }
 802
 803     TRACE(" -- %x\n", hr);
 804     return hr;
 805 }
 806
 807 static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable,  LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl)
 808 {
 809     TRACE("\n");
 810
 811     /* Common attributes */
 812     pPinImpl->pin.lpVtbl = OutputPin_Vtbl;
 813     pPinImpl->pin.refCount = 1;
 814     pPinImpl->pin.pConnectedTo = NULL;
 815     pPinImpl->pin.pCritSec = pCritSec;
 816     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 817     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
 818     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 819
 820     /* Output pin attributes */
 821     pPinImpl->pMemInputPin = NULL;
 822     pPinImpl->pFuncsTable = pBaseOutputFuncsTable;
 823
 824     return S_OK;
 825 }
 826
 827 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)
 828 {
 829     BaseOutputPin * pPinImpl;
 830
 831     *ppPin = NULL;
 832
 833     if (pPinInfo->dir != PINDIR_OUTPUT)
 834     {
 835         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 836         return E_INVALIDARG;
 837     }
 838
 839     assert(outputpin_size >= sizeof(BaseOutputPin));
 840     assert(pBaseFuncsTable->pfnAttemptConnection);
 841
 842     pPinImpl = CoTaskMemAlloc(outputpin_size);
 843
 844     if (!pPinImpl)
 845         return E_OUTOFMEMORY;
 846
 847     if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl)))
 848     {
 849         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 850         return S_OK;
 851     }
 852
 853     CoTaskMemFree(pPinImpl);
 854     return E_FAIL;
 855 }
 856
 857 /*** Input Pin implementation ***/
 858
 859 HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 860 {
 861     BaseInputPin *This = (BaseInputPin *)iface;
 862
 863     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 864
 865     *ppv = NULL;
 866
 867     if (IsEqualIID(riid, &IID_IUnknown))
 868         *ppv = iface;
 869     else if (IsEqualIID(riid, &IID_IPin))
 870         *ppv = iface;
 871     else if (IsEqualIID(riid, &IID_IMemInputPin))
 872         *ppv = &This->lpVtblMemInput;
 873     else if (IsEqualIID(riid, &IID_IMediaSeeking))
 874     {
 875         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv);
 876     }
 877
 878     if (*ppv)
 879     {
 880         IUnknown_AddRef((IUnknown *)(*ppv));
 881         return S_OK;
 882     }
 883
 884     FIXME("No interface for %s!\n", debugstr_guid(riid));
 885
 886     return E_NOINTERFACE;
 887 }
 888
 889 ULONG WINAPI BaseInputPinImpl_Release(IPin * iface)
 890 {
 891     BaseInputPin *This = (BaseInputPin *)iface;
 892     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 893
 894     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 895
 896     if (!refCount)
 897     {
 898         FreeMediaType(&This->pin.mtCurrent);
 899         if (This->pAllocator)
 900             IMemAllocator_Release(This->pAllocator);
 901         This->pAllocator = NULL;
 902         This->pin.lpVtbl = NULL;
 903         CoTaskMemFree(This);
 904         return 0;
 905     }
 906     else
 907         return refCount;
 908 }
 909
 910 HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt)
 911 {
 912     ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt);
 913
 914     return E_UNEXPECTED;
 915 }
 916
 917
 918 HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 919 {
 920     BaseInputPin *This = (BaseInputPin *)iface;
 921     PIN_DIRECTION pindirReceive;
 922     HRESULT hr = S_OK;
 923
 924     TRACE("(%p, %p)\n", pReceivePin, pmt);
 925     dump_AM_MEDIA_TYPE(pmt);
 926
 927     EnterCriticalSection(This->pin.pCritSec);
 928     {
 929         if (This->pin.pConnectedTo)
 930             hr = VFW_E_ALREADY_CONNECTED;
 931
 932         if (SUCCEEDED(hr) && This->pin.pFuncsTable->pfnCheckMediaType((BasePin*)This, pmt) != S_OK)
 933             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 934                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 935
 936         if (SUCCEEDED(hr))
 937         {
 938             IPin_QueryDirection(pReceivePin, &pindirReceive);
 939
 940             if (pindirReceive != PINDIR_OUTPUT)
 941             {
 942                 ERR("Can't connect from non-output pin\n");
 943                 hr = VFW_E_INVALID_DIRECTION;
 944             }
 945         }
 946
 947         if (SUCCEEDED(hr))
 948         {
 949             CopyMediaType(&This->pin.mtCurrent, pmt);
 950             This->pin.pConnectedTo = pReceivePin;
 951             IPin_AddRef(pReceivePin);
 952         }
 953     }
 954     LeaveCriticalSection(This->pin.pCritSec);
 955
 956     return hr;
 957 }
 958
 959 static HRESULT deliver_endofstream(IPin* pin, LPVOID unused)
 960 {
 961     return IPin_EndOfStream( pin );
 962 }
 963
 964 HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 965 {
 966     BaseInputPin *This = (BaseInputPin *)iface;
 967
 968     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 969
 970     return (This->pin.pFuncsTable->pfnCheckMediaType((BasePin*)This, pmt) == S_OK ? S_OK : S_FALSE);
 971 }
 972
 973 HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface)
 974 {
 975     HRESULT hr = S_OK;
 976     BaseInputPin *This = (BaseInputPin *)iface;
 977
 978     TRACE("(%p)\n", This);
 979
 980     EnterCriticalSection(This->pin.pCritSec);
 981     if (This->flushing)
 982         hr = S_FALSE;
 983     else
 984         This->end_of_stream = 1;
 985     LeaveCriticalSection(This->pin.pCritSec);
 986
 987     if (hr == S_OK)
 988         hr = SendFurther( iface, deliver_endofstream, NULL, NULL );
 989     return hr;
 990 }
 991
 992 static HRESULT deliver_beginflush(IPin* pin, LPVOID unused)
 993 {
 994     return IPin_BeginFlush( pin );
 995 }
 996
 997 HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface)
 998 {
 999     BaseInputPin *This = (BaseInputPin *)iface;
1000     HRESULT hr;
1001     TRACE("() semi-stub\n");
1002
1003     EnterCriticalSection(This->pin.pCritSec);
1004     This->flushing = 1;
1005
1006     hr = SendFurther( iface, deliver_beginflush, NULL, NULL );
1007     LeaveCriticalSection(This->pin.pCritSec);
1008
1009     return hr;
1010 }
1011
1012 static HRESULT deliver_endflush(IPin* pin, LPVOID unused)
1013 {
1014     return IPin_EndFlush( pin );
1015 }
1016
1017 HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface)
1018 {
1019     BaseInputPin *This = (BaseInputPin *)iface;
1020     HRESULT hr;
1021     TRACE("(%p)\n", This);
1022
1023     EnterCriticalSection(This->pin.pCritSec);
1024     This->flushing = This->end_of_stream = 0;
1025
1026     hr = SendFurther( iface, deliver_endflush, NULL, NULL );
1027     LeaveCriticalSection(This->pin.pCritSec);
1028
1029     return hr;
1030 }
1031
1032 typedef struct newsegmentargs
1033 {
1034     REFERENCE_TIME tStart, tStop;
1035     double rate;
1036 } newsegmentargs;
1037
1038 static HRESULT deliver_newsegment(IPin *pin, LPVOID data)
1039 {
1040     newsegmentargs *args = data;
1041     return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate);
1042 }
1043
1044 HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
1045 {
1046     BaseInputPin *This = (BaseInputPin *)iface;
1047     newsegmentargs args;
1048
1049     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
1050
1051     args.tStart = This->tStart = tStart;
1052     args.tStop = This->tStop = tStop;
1053     args.rate = This->dRate = dRate;
1054
1055     return SendFurther( iface, deliver_newsegment, &args, NULL );
1056 }
1057
1058 static const IPinVtbl InputPin_Vtbl =
1059 {
1060     BaseInputPinImpl_QueryInterface,
1061     BasePinImpl_AddRef,
1062     BaseInputPinImpl_Release,
1063     BaseInputPinImpl_Connect,
1064     BaseInputPinImpl_ReceiveConnection,
1065     BasePinImpl_Disconnect,
1066     BasePinImpl_ConnectedTo,
1067     BasePinImpl_ConnectionMediaType,
1068     BasePinImpl_QueryPinInfo,
1069     BasePinImpl_QueryDirection,
1070     BasePinImpl_QueryId,
1071     BaseInputPinImpl_QueryAccept,
1072     BasePinImpl_EnumMediaTypes,
1073     BasePinImpl_QueryInternalConnections,
1074     BaseInputPinImpl_EndOfStream,
1075     BaseInputPinImpl_BeginFlush,
1076     BaseInputPinImpl_EndFlush,
1077     BaseInputPinImpl_NewSegment
1078 };
1079
1080 /*** IMemInputPin implementation ***/
1081
1082 static inline BaseInputPin *impl_from_IMemInputPin( IMemInputPin *iface )
1083 {
1084     return (BaseInputPin *)((char*)iface - FIELD_OFFSET(BaseInputPin, lpVtblMemInput));
1085 }
1086
1087 static HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv)
1088 {
1089     BaseInputPin *This = impl_from_IMemInputPin(iface);
1090
1091     return IPin_QueryInterface((IPin *)&This->pin, riid, ppv);
1092 }
1093
1094 static ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface)
1095 {
1096     BaseInputPin *This = impl_from_IMemInputPin(iface);
1097
1098     return IPin_AddRef((IPin *)&This->pin);
1099 }
1100
1101 static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
1102 {
1103     BaseInputPin *This = impl_from_IMemInputPin(iface);
1104
1105     return IPin_Release((IPin *)&This->pin);
1106 }
1107
1108 static HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator)
1109 {
1110     BaseInputPin *This = impl_from_IMemInputPin(iface);
1111
1112     TRACE("(%p/%p)->(%p)\n", This, iface, ppAllocator);
1113
1114     *ppAllocator = This->pAllocator;
1115     if (*ppAllocator)
1116         IMemAllocator_AddRef(*ppAllocator);
1117
1118     return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR;
1119 }
1120
1121 static HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly)
1122 {
1123     BaseInputPin *This = impl_from_IMemInputPin(iface);
1124
1125     TRACE("(%p/%p)->(%p, %d)\n", This, iface, pAllocator, bReadOnly);
1126
1127     if (bReadOnly)
1128         FIXME("Read only flag not handled yet!\n");
1129
1130     /* FIXME: Should we release the allocator on disconnection? */
1131     if (!pAllocator)
1132     {
1133         WARN("Null allocator\n");
1134         return E_POINTER;
1135     }
1136
1137     if (This->preferred_allocator && pAllocator != This->preferred_allocator)
1138         return E_FAIL;
1139
1140     if (This->pAllocator)
1141         IMemAllocator_Release(This->pAllocator);
1142     This->pAllocator = pAllocator;
1143     if (This->pAllocator)
1144         IMemAllocator_AddRef(This->pAllocator);
1145
1146     return S_OK;
1147 }
1148
1149 static HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps)
1150 {
1151     BaseInputPin *This = impl_from_IMemInputPin(iface);
1152
1153     TRACE("(%p/%p)->(%p)\n", This, iface, pProps);
1154
1155     /* override this method if you have any specific requirements */
1156
1157     return E_NOTIMPL;
1158 }
1159
1160 static HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample)
1161 {
1162     BaseInputPin *This = impl_from_IMemInputPin(iface);
1163     HRESULT hr = S_FALSE;
1164
1165     /* this trace commented out for performance reasons */
1166     /*TRACE("(%p/%p)->(%p)\n", This, iface, pSample);*/
1167     if (This->pFuncsTable->pfnReceive)
1168         hr = This->pFuncsTable->pfnReceive(This, pSample);
1169     return hr;
1170 }
1171
1172 static HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, LONG nSamples, LONG *nSamplesProcessed)
1173 {
1174     HRESULT hr = S_OK;
1175     BaseInputPin *This = impl_from_IMemInputPin(iface);
1176
1177     TRACE("(%p/%p)->(%p, %d, %p)\n", This, iface, pSamples, nSamples, nSamplesProcessed);
1178
1179     for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++)
1180     {
1181         hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]);
1182         if (hr != S_OK)
1183             break;
1184     }
1185
1186     return hr;
1187 }
1188
1189 static HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface)
1190 {
1191     BaseInputPin *This = impl_from_IMemInputPin(iface);
1192
1193     TRACE("(%p/%p)->()\n", This, iface);
1194
1195     return S_OK;
1196 }
1197
1198 static const IMemInputPinVtbl MemInputPin_Vtbl =
1199 {
1200     MemInputPin_QueryInterface,
1201     MemInputPin_AddRef,
1202     MemInputPin_Release,
1203     MemInputPin_GetAllocator,
1204     MemInputPin_NotifyAllocator,
1205     MemInputPin_GetAllocatorRequirements,
1206     MemInputPin_Receive,
1207     MemInputPin_ReceiveMultiple,
1208     MemInputPin_ReceiveCanBlock
1209 };
1210
1211 static HRESULT InputPin_Init(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1212                              const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1213                              LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, BaseInputPin * pPinImpl)
1214 {
1215     TRACE("\n");
1216
1217     /* Common attributes */
1218     pPinImpl->pin.refCount = 1;
1219     pPinImpl->pin.pConnectedTo = NULL;
1220     pPinImpl->pin.pCritSec = pCritSec;
1221     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1222     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
1223     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
1224
1225     /* Input pin attributes */
1226     pPinImpl->pFuncsTable = pBaseInputFuncsTable;
1227     pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator;
1228     if (pPinImpl->preferred_allocator)
1229         IMemAllocator_AddRef(pPinImpl->preferred_allocator);
1230     pPinImpl->tStart = 0;
1231     pPinImpl->tStop = 0;
1232     pPinImpl->dRate = 1.0;
1233     pPinImpl->pin.lpVtbl = InputPin_Vtbl;
1234     pPinImpl->lpVtblMemInput = &MemInputPin_Vtbl;
1235     pPinImpl->flushing = pPinImpl->end_of_stream = 0;
1236
1237     return S_OK;
1238 }
1239
1240 HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1241                                const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1242                                LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, IPin ** ppPin)
1243 {
1244     BaseInputPin * pPinImpl;
1245
1246     *ppPin = NULL;
1247
1248     assert(pBaseFuncsTable->pfnCheckMediaType);
1249
1250     if (pPinInfo->dir != PINDIR_INPUT)
1251     {
1252         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
1253         return E_INVALIDARG;
1254     }
1255
1256     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
1257
1258     if (!pPinImpl)
1259         return E_OUTOFMEMORY;
1260
1261     if (SUCCEEDED(InputPin_Init(InputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseInputFuncsTable, pCritSec, allocator, pPinImpl)))
1262     {
1263         *ppPin = (IPin *)pPinImpl;
1264         return S_OK;
1265     }
1266
1267     CoTaskMemFree(pPinImpl);
1268     return E_FAIL;
1269 }