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 static inline BasePin *impl_from_IPin( IPin *iface )
  41 {
  42     return CONTAINING_RECORD(iface, BasePin, IPin_iface);
  43 }
  44
  45 /** Helper function, there are a lot of places where the error code is inherited
  46  * The following rules apply:
  47  *
  48  * Return the first received error code (E_NOTIMPL is ignored)
  49  * If no errors occur: return the first received non-error-code that isn't S_OK
  50  */
  51 static HRESULT updatehres( HRESULT original, HRESULT new )
  52 {
  53     if (FAILED( original ) || new == E_NOTIMPL)
  54         return original;
  55
  56     if (FAILED( new ) || original == S_OK)
  57         return new;
  58
  59     return original;
  60 }
  61
  62 /** Sends a message from a pin further to other, similar pins
  63  * fnMiddle is called on each pin found further on the stream.
  64  * fnEnd (can be NULL) is called when the message can't be sent any further (this is a renderer or source)
  65  *
  66  * If the pin given is an input pin, the message will be sent downstream to other input pins
  67  * If the pin given is an output pin, the message will be sent upstream to other output pins
  68  */
  69 static HRESULT SendFurther( IPin *from, SendPinFunc fnMiddle, LPVOID arg, SendPinFunc fnEnd )
  70 {
  71     PIN_INFO pin_info;
  72     ULONG amount = 0;
  73     HRESULT hr = S_OK;
  74     HRESULT hr_return = S_OK;
  75     IEnumPins *enumpins = NULL;
  76     BOOL foundend = TRUE;
  77     PIN_DIRECTION from_dir;
  78
  79     IPin_QueryDirection( from, &from_dir );
  80
  81     hr = IPin_QueryInternalConnections( from, NULL, &amount );
  82     if (hr != E_NOTIMPL && amount)
  83         FIXME("Use QueryInternalConnections!\n");
  84      hr = S_OK;
  85
  86     pin_info.pFilter = NULL;
  87     hr = IPin_QueryPinInfo( from, &pin_info );
  88     if (FAILED(hr))
  89         goto out;
  90
  91     hr = IBaseFilter_EnumPins( pin_info.pFilter, &enumpins );
  92     if (FAILED(hr))
  93         goto out;
  94
  95     hr = IEnumPins_Reset( enumpins );
  96     while (hr == S_OK) {
  97         IPin *pin = NULL;
  98         hr = IEnumPins_Next( enumpins, 1, &pin, NULL );
  99         if (hr == VFW_E_ENUM_OUT_OF_SYNC)
 100         {
 101             hr = IEnumPins_Reset( enumpins );
 102             continue;
 103         }
 104         if (pin)
 105         {
 106             PIN_DIRECTION dir;
 107
 108             IPin_QueryDirection( pin, &dir );
 109             if (dir != from_dir)
 110             {
 111                 IPin *connected = NULL;
 112
 113                 foundend = FALSE;
 114                 IPin_ConnectedTo( pin, &connected );
 115                 if (connected)
 116                 {
 117                     HRESULT hr_local;
 118
 119                     hr_local = fnMiddle( connected, arg );
 120                     hr_return = updatehres( hr_return, hr_local );
 121                     IPin_Release(connected);
 122                 }
 123             }
 124             IPin_Release( pin );
 125         }
 126         else
 127         {
 128             hr = S_OK;
 129             break;
 130         }
 131     }
 132
 133     if (!foundend)
 134         hr = hr_return;
 135     else if (fnEnd) {
 136         HRESULT hr_local;
 137
 138         hr_local = fnEnd( from, arg );
 139         hr_return = updatehres( hr_return, hr_local );
 140     }
 141     IEnumPins_Release(enumpins);
 142
 143 out:
 144     if (pin_info.pFilter)
 145         IBaseFilter_Release( pin_info.pFilter );
 146     return hr;
 147 }
 148
 149 static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
 150 {
 151     /* Tempting to just do a memcpy, but the name field is
 152        128 characters long! We will probably never exceed 10
 153        most of the time, so we are better off copying
 154        each field manually */
 155     strcpyW(pDest->achName, pSrc->achName);
 156     pDest->dir = pSrc->dir;
 157     pDest->pFilter = pSrc->pFilter;
 158 }
 159
 160 static void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE * pmt)
 161 {
 162     if (!pmt)
 163         return;
 164     TRACE("\t%s\n\t%s\n\t...\n\t%s\n", debugstr_guid(&pmt->majortype), debugstr_guid(&pmt->subtype), debugstr_guid(&pmt->formattype));
 165 }
 166
 167 static BOOL CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, BOOL bWildcards)
 168 {
 169     TRACE("pmt1: ");
 170     dump_AM_MEDIA_TYPE(pmt1);
 171     TRACE("pmt2: ");
 172     dump_AM_MEDIA_TYPE(pmt2);
 173     return (((bWildcards && (IsEqualGUID(&pmt1->majortype, &GUID_NULL) || IsEqualGUID(&pmt2->majortype, &GUID_NULL))) || IsEqualGUID(&pmt1->majortype, &pmt2->majortype)) &&
 174             ((bWildcards && (IsEqualGUID(&pmt1->subtype, &GUID_NULL)   || IsEqualGUID(&pmt2->subtype, &GUID_NULL)))   || IsEqualGUID(&pmt1->subtype, &pmt2->subtype)));
 175 }
 176
 177 /*** Common Base Pin function */
 178 HRESULT WINAPI BasePinImpl_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
 179 {
 180     if (iPosition < 0)
 181         return E_INVALIDARG;
 182     return VFW_S_NO_MORE_ITEMS;
 183 }
 184
 185 LONG WINAPI BasePinImpl_GetMediaTypeVersion(BasePin *iface)
 186 {
 187     return 1;
 188 }
 189
 190 ULONG WINAPI BasePinImpl_AddRef(IPin * iface)
 191 {
 192     BasePin *This = impl_from_IPin(iface);
 193     ULONG refCount = InterlockedIncrement(&This->refCount);
 194
 195     TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1);
 196
 197     return refCount;
 198 }
 199
 200 HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface)
 201 {
 202     HRESULT hr;
 203     BasePin *This = impl_from_IPin(iface);
 204
 205     TRACE("()\n");
 206
 207     EnterCriticalSection(This->pCritSec);
 208     {
 209         if (This->pConnectedTo)
 210         {
 211             IPin_Release(This->pConnectedTo);
 212             This->pConnectedTo = NULL;
 213             FreeMediaType(&This->mtCurrent);
 214             ZeroMemory(&This->mtCurrent, sizeof(This->mtCurrent));
 215             hr = S_OK;
 216         }
 217         else
 218             hr = S_FALSE;
 219     }
 220     LeaveCriticalSection(This->pCritSec);
 221
 222     return hr;
 223 }
 224
 225 HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
 226 {
 227     HRESULT hr;
 228     BasePin *This = impl_from_IPin(iface);
 229
 230     TRACE("(%p)\n", ppPin);
 231
 232     EnterCriticalSection(This->pCritSec);
 233     {
 234         if (This->pConnectedTo)
 235         {
 236             *ppPin = This->pConnectedTo;
 237             IPin_AddRef(*ppPin);
 238             hr = S_OK;
 239         }
 240         else
 241         {
 242             hr = VFW_E_NOT_CONNECTED;
 243             *ppPin = NULL;
 244         }
 245     }
 246     LeaveCriticalSection(This->pCritSec);
 247
 248     return hr;
 249 }
 250
 251 HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
 252 {
 253     HRESULT hr;
 254     BasePin *This = impl_from_IPin(iface);
 255
 256     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 257
 258     EnterCriticalSection(This->pCritSec);
 259     {
 260         if (This->pConnectedTo)
 261         {
 262             CopyMediaType(pmt, &This->mtCurrent);
 263             hr = S_OK;
 264         }
 265         else
 266         {
 267             ZeroMemory(pmt, sizeof(*pmt));
 268             hr = VFW_E_NOT_CONNECTED;
 269         }
 270     }
 271     LeaveCriticalSection(This->pCritSec);
 272
 273     return hr;
 274 }
 275
 276 HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
 277 {
 278     BasePin *This = impl_from_IPin(iface);
 279
 280     TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
 281
 282     Copy_PinInfo(pInfo, &This->pinInfo);
 283     IBaseFilter_AddRef(pInfo->pFilter);
 284
 285     return S_OK;
 286 }
 287
 288 HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
 289 {
 290     BasePin *This = impl_from_IPin(iface);
 291
 292     TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
 293
 294     *pPinDir = This->pinInfo.dir;
 295
 296     return S_OK;
 297 }
 298
 299 HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id)
 300 {
 301     BasePin *This = impl_from_IPin(iface);
 302
 303     TRACE("(%p/%p)->(%p)\n", This, iface, Id);
 304
 305     *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
 306     if (!*Id)
 307         return E_OUTOFMEMORY;
 308
 309     strcpyW(*Id, This->pinInfo.achName);
 310
 311     return S_OK;
 312 }
 313
 314 HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 315 {
 316     TRACE("(%p)->(%p)\n", iface, pmt);
 317
 318     return S_OK;
 319 }
 320
 321 HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 322 {
 323     BasePin *This = impl_from_IPin(iface);
 324
 325     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 326
 327     /* override this method to allow enumeration of your types */
 328
 329     return EnumMediaTypes_Construct(This, This->pFuncsTable->pfnGetMediaType, This->pFuncsTable->pfnGetMediaTypeVersion , ppEnum);
 330 }
 331
 332 HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
 333 {
 334     BasePin *This = impl_from_IPin(iface);
 335
 336     TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
 337
 338     return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
 339 }
 340
 341 HRESULT WINAPI BasePinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 342 {
 343     BasePin *This = impl_from_IPin(iface);
 344
 345     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
 346
 347     This->tStart = tStart;
 348     This->tStop = tStop;
 349     This->dRate = dRate;
 350
 351     return S_OK;
 352 }
 353
 354 /*** OutputPin implementation ***/
 355
 356 static inline BaseOutputPin *impl_BaseOutputPin_from_IPin( IPin *iface )
 357 {
 358     return CONTAINING_RECORD(iface, BaseOutputPin, pin.IPin_iface);
 359 }
 360
 361 static inline BaseOutputPin *impl_BaseOutputPin_from_BasePin( BasePin *iface )
 362 {
 363     return CONTAINING_RECORD(iface, BaseOutputPin, pin);
 364 }
 365
 366 HRESULT WINAPI BaseOutputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 367 {
 368     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 369
 370     TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv);
 371
 372     *ppv = NULL;
 373
 374     if (IsEqualIID(riid, &IID_IUnknown))
 375         *ppv = iface;
 376     else if (IsEqualIID(riid, &IID_IPin))
 377         *ppv = iface;
 378     else if (IsEqualIID(riid, &IID_IMediaSeeking) ||
 379              IsEqualIID(riid, &IID_IQualityControl))
 380     {
 381         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, riid, ppv);
 382     }
 383
 384     if (*ppv)
 385     {
 386         IUnknown_AddRef((IUnknown *)(*ppv));
 387         return S_OK;
 388     }
 389
 390     FIXME("No interface for %s!\n", debugstr_guid(riid));
 391
 392     return E_NOINTERFACE;
 393 }
 394
 395 ULONG WINAPI BaseOutputPinImpl_Release(IPin * iface)
 396 {
 397     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 398     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 399
 400     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 401
 402     if (!refCount)
 403     {
 404         FreeMediaType(&This->pin.mtCurrent);
 405         CoTaskMemFree(This);
 406         return 0;
 407     }
 408     return refCount;
 409 }
 410
 411 HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 412 {
 413     HRESULT hr;
 414     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 415
 416     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 417     dump_AM_MEDIA_TYPE(pmt);
 418
 419     /* If we try to connect to ourselves, we will definitely deadlock.
 420      * There are other cases where we could deadlock too, but this
 421      * catches the obvious case */
 422     assert(pReceivePin != iface);
 423
 424     EnterCriticalSection(This->pin.pCritSec);
 425     {
 426         /* if we have been a specific type to connect with, then we can either connect
 427          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 428         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 429             hr = This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmt);
 430         else
 431         {
 432             /* negotiate media type */
 433
 434             IEnumMediaTypes * pEnumCandidates;
 435             AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */
 436
 437             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 438             {
 439                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 440
 441                 /* try this filter's media types first */
 442                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 443                 {
 444                     assert(pmtCandidate);
 445                     dump_AM_MEDIA_TYPE(pmtCandidate);
 446                     if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype)
 447                         && !IsEqualGUID(&GUID_NULL, &pmtCandidate->formattype))
 448                         assert(pmtCandidate->pbFormat);
 449                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 450                         (This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmtCandidate) == S_OK))
 451                     {
 452                         hr = S_OK;
 453                         DeleteMediaType(pmtCandidate);
 454                         break;
 455                     }
 456                     DeleteMediaType(pmtCandidate);
 457                     pmtCandidate = NULL;
 458                 }
 459                 IEnumMediaTypes_Release(pEnumCandidates);
 460             }
 461
 462             /* then try receiver filter's media types */
 463             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 464             {
 465                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 466
 467                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 468                 {
 469                     assert(pmtCandidate);
 470                     dump_AM_MEDIA_TYPE(pmtCandidate);
 471                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 472                         (This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmtCandidate) == S_OK))
 473                     {
 474                         hr = S_OK;
 475                         DeleteMediaType(pmtCandidate);
 476                         break;
 477                     }
 478                     DeleteMediaType(pmtCandidate);
 479                     pmtCandidate = NULL;
 480                 } /* while */
 481                 IEnumMediaTypes_Release(pEnumCandidates);
 482             } /* if not found */
 483         } /* if negotiate media type */
 484     } /* if succeeded */
 485     LeaveCriticalSection(This->pin.pCritSec);
 486
 487     TRACE(" -- %x\n", hr);
 488     return hr;
 489 }
 490
 491 HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 492 {
 493     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 494
 495     return E_UNEXPECTED;
 496 }
 497
 498 HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface)
 499 {
 500     HRESULT hr;
 501     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 502
 503     TRACE("()\n");
 504
 505     EnterCriticalSection(This->pin.pCritSec);
 506     {
 507         if (This->pMemInputPin)
 508         {
 509             IMemInputPin_Release(This->pMemInputPin);
 510             This->pMemInputPin = NULL;
 511         }
 512         if (This->pin.pConnectedTo)
 513         {
 514             IPin_Release(This->pin.pConnectedTo);
 515             This->pin.pConnectedTo = NULL;
 516             FreeMediaType(&This->pin.mtCurrent);
 517             ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent));
 518             hr = S_OK;
 519         }
 520         else
 521             hr = S_FALSE;
 522     }
 523     LeaveCriticalSection(This->pin.pCritSec);
 524
 525     return hr;
 526 }
 527
 528 HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface)
 529 {
 530     TRACE("()\n");
 531
 532     /* not supposed to do anything in an output pin */
 533
 534     return E_UNEXPECTED;
 535 }
 536
 537 HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface)
 538 {
 539     TRACE("(%p)->()\n", iface);
 540
 541     /* not supposed to do anything in an output pin */
 542
 543     return E_UNEXPECTED;
 544 }
 545
 546 HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface)
 547 {
 548     TRACE("(%p)->()\n", iface);
 549
 550     /* not supposed to do anything in an output pin */
 551
 552     return E_UNEXPECTED;
 553 }
 554
 555 static const IPinVtbl OutputPin_Vtbl =
 556 {
 557     BaseOutputPinImpl_QueryInterface,
 558     BasePinImpl_AddRef,
 559     BaseOutputPinImpl_Release,
 560     BaseOutputPinImpl_Connect,
 561     BaseOutputPinImpl_ReceiveConnection,
 562     BaseOutputPinImpl_Disconnect,
 563     BasePinImpl_ConnectedTo,
 564     BasePinImpl_ConnectionMediaType,
 565     BasePinImpl_QueryPinInfo,
 566     BasePinImpl_QueryDirection,
 567     BasePinImpl_QueryId,
 568     BasePinImpl_QueryAccept,
 569     BasePinImpl_EnumMediaTypes,
 570     BasePinImpl_QueryInternalConnections,
 571     BaseOutputPinImpl_EndOfStream,
 572     BaseOutputPinImpl_BeginFlush,
 573     BaseOutputPinImpl_EndFlush,
 574     BasePinImpl_NewSegment
 575 };
 576
 577 HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin *This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags)
 578 {
 579     HRESULT hr;
 580
 581     TRACE("(%p, %p, %p, %x)\n", ppSample, tStart, tStop, dwFlags);
 582
 583     if (!This->pin.pConnectedTo)
 584         hr = VFW_E_NOT_CONNECTED;
 585     else
 586     {
 587         IMemAllocator * pAlloc = NULL;
 588
 589         hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 590
 591         if (SUCCEEDED(hr))
 592             hr = IMemAllocator_GetBuffer(pAlloc, ppSample, tStart, tStop, dwFlags);
 593
 594         if (SUCCEEDED(hr))
 595             hr = IMediaSample_SetTime(*ppSample, tStart, tStop);
 596
 597         if (pAlloc)
 598             IMemAllocator_Release(pAlloc);
 599     }
 600
 601     return hr;
 602 }
 603
 604 /* replaces OutputPin_SendSample */
 605 HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample)
 606 {
 607     HRESULT hr = S_OK;
 608     IMemInputPin * pMemConnected = NULL;
 609     PIN_INFO pinInfo;
 610
 611     EnterCriticalSection(This->pin.pCritSec);
 612     {
 613         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 614             hr = VFW_E_NOT_CONNECTED;
 615         else
 616         {
 617             /* we don't have the lock held when using This->pMemInputPin,
 618              * so we need to AddRef it to stop it being deleted while we are
 619              * using it. Same with its filter. */
 620             pMemConnected = This->pMemInputPin;
 621             IMemInputPin_AddRef(pMemConnected);
 622             hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo);
 623         }
 624     }
 625     LeaveCriticalSection(This->pin.pCritSec);
 626
 627     if (SUCCEEDED(hr))
 628     {
 629         /* NOTE: if we are in a critical section when Receive is called
 630          * then it causes some problems (most notably with the native Video
 631          * Renderer) if we are re-entered for whatever reason */
 632         hr = IMemInputPin_Receive(pMemConnected, pSample);
 633
 634         /* If the filter's destroyed, tell upstream to stop sending data */
 635         if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr))
 636             hr = S_FALSE;
 637     }
 638     if (pMemConnected)
 639         IMemInputPin_Release(pMemConnected);
 640
 641     return hr;
 642 }
 643
 644 /* replaces OutputPin_CommitAllocator */
 645 HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This)
 646 {
 647     HRESULT hr = S_OK;
 648
 649     TRACE("(%p)->()\n", This);
 650
 651     EnterCriticalSection(This->pin.pCritSec);
 652     {
 653         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 654             hr = VFW_E_NOT_CONNECTED;
 655         else
 656         {
 657             IMemAllocator * pAlloc = NULL;
 658
 659             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 660
 661             if (SUCCEEDED(hr))
 662                 hr = IMemAllocator_Commit(pAlloc);
 663
 664             if (pAlloc)
 665                 IMemAllocator_Release(pAlloc);
 666         }
 667     }
 668     LeaveCriticalSection(This->pin.pCritSec);
 669
 670     TRACE("--> %08x\n", hr);
 671     return hr;
 672 }
 673
 674 /* replaces OutputPin_DecommitAllocator */
 675 HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This)
 676 {
 677     HRESULT hr = S_OK;
 678
 679     TRACE("(%p)->()\n", This);
 680
 681     EnterCriticalSection(This->pin.pCritSec);
 682     {
 683         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 684             hr = VFW_E_NOT_CONNECTED;
 685         else
 686         {
 687             IMemAllocator * pAlloc = NULL;
 688
 689             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 690
 691             if (SUCCEEDED(hr))
 692                 hr = IMemAllocator_Decommit(pAlloc);
 693
 694             if (pAlloc)
 695                 IMemAllocator_Release(pAlloc);
 696         }
 697     }
 698     LeaveCriticalSection(This->pin.pCritSec);
 699
 700     TRACE("--> %08x\n", hr);
 701     return hr;
 702 }
 703
 704 /* replaces OutputPin_DeliverDisconnect */
 705 HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This)
 706 {
 707     HRESULT hr;
 708
 709     TRACE("(%p)->()\n", This);
 710
 711     EnterCriticalSection(This->pin.pCritSec);
 712     {
 713         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 714             hr = VFW_E_NOT_CONNECTED;
 715         else
 716         {
 717             IMemAllocator * pAlloc = NULL;
 718
 719             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 720
 721             if (SUCCEEDED(hr))
 722                 hr = IMemAllocator_Decommit(pAlloc);
 723
 724             if (pAlloc)
 725                 IMemAllocator_Release(pAlloc);
 726
 727             if (SUCCEEDED(hr))
 728                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 729         }
 730         IPin_Disconnect(&This->pin.IPin_iface);
 731     }
 732     LeaveCriticalSection(This->pin.pCritSec);
 733
 734     return hr;
 735 }
 736
 737 HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc)
 738 {
 739     return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc);
 740 }
 741
 742 HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc)
 743 {
 744     HRESULT hr;
 745
 746     hr = IMemInputPin_GetAllocator(pPin, pAlloc);
 747
 748     if (hr == VFW_E_NO_ALLOCATOR)
 749         /* Input pin provides no allocator, use standard memory allocator */
 750         hr = BaseOutputPinImpl_InitAllocator(This, pAlloc);
 751
 752     if (SUCCEEDED(hr))
 753     {
 754         ALLOCATOR_PROPERTIES rProps;
 755         ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES));
 756
 757         IMemInputPin_GetAllocatorRequirements(pPin, &rProps);
 758         hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps);
 759     }
 760
 761     if (SUCCEEDED(hr))
 762         hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE);
 763
 764     return hr;
 765 }
 766
 767 /*** The Construct functions ***/
 768
 769 /* Function called as a helper to IPin_Connect */
 770 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 771 HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 772 {
 773     BaseOutputPin *This = impl_BaseOutputPin_from_BasePin(iface);
 774     HRESULT hr;
 775     IMemAllocator * pMemAlloc = NULL;
 776
 777     TRACE("(%p, %p)\n", pReceivePin, pmt);
 778     dump_AM_MEDIA_TYPE(pmt);
 779
 780     /* FIXME: call queryacceptproc */
 781
 782     This->pin.pConnectedTo = pReceivePin;
 783     IPin_AddRef(pReceivePin);
 784     CopyMediaType(&This->pin.mtCurrent, pmt);
 785
 786     hr = IPin_ReceiveConnection(pReceivePin, &iface->IPin_iface, pmt);
 787
 788     /* get the IMemInputPin interface we will use to deliver samples to the
 789      * connected pin */
 790     if (SUCCEEDED(hr))
 791     {
 792         This->pMemInputPin = NULL;
 793         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 794
 795         if (SUCCEEDED(hr))
 796         {
 797             hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc);
 798             if (pMemAlloc)
 799                 IMemAllocator_Release(pMemAlloc);
 800         }
 801
 802         /* break connection if we couldn't get the allocator */
 803         if (FAILED(hr))
 804         {
 805             if (This->pMemInputPin)
 806                 IMemInputPin_Release(This->pMemInputPin);
 807             This->pMemInputPin = NULL;
 808
 809             IPin_Disconnect(pReceivePin);
 810         }
 811     }
 812
 813     if (FAILED(hr))
 814     {
 815         IPin_Release(This->pin.pConnectedTo);
 816         This->pin.pConnectedTo = NULL;
 817         FreeMediaType(&This->pin.mtCurrent);
 818     }
 819
 820     TRACE(" -- %x\n", hr);
 821     return hr;
 822 }
 823
 824 static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable,  LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl)
 825 {
 826     TRACE("\n");
 827
 828     /* Common attributes */
 829     pPinImpl->pin.IPin_iface.lpVtbl = OutputPin_Vtbl;
 830     pPinImpl->pin.refCount = 1;
 831     pPinImpl->pin.pConnectedTo = NULL;
 832     pPinImpl->pin.pCritSec = pCritSec;
 833     pPinImpl->pin.tStart = 0;
 834     pPinImpl->pin.tStop = 0;
 835     pPinImpl->pin.dRate = 1.0;
 836     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 837     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
 838     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 839
 840     /* Output pin attributes */
 841     pPinImpl->pMemInputPin = NULL;
 842     pPinImpl->pFuncsTable = pBaseOutputFuncsTable;
 843
 844     return S_OK;
 845 }
 846
 847 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)
 848 {
 849     BaseOutputPin * pPinImpl;
 850
 851     *ppPin = NULL;
 852
 853     if (pPinInfo->dir != PINDIR_OUTPUT)
 854     {
 855         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 856         return E_INVALIDARG;
 857     }
 858
 859     assert(outputpin_size >= sizeof(BaseOutputPin));
 860     assert(pBaseFuncsTable->pfnAttemptConnection);
 861
 862     pPinImpl = CoTaskMemAlloc(outputpin_size);
 863
 864     if (!pPinImpl)
 865         return E_OUTOFMEMORY;
 866
 867     if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl)))
 868     {
 869         *ppPin = &pPinImpl->pin.IPin_iface;
 870         return S_OK;
 871     }
 872
 873     CoTaskMemFree(pPinImpl);
 874     return E_FAIL;
 875 }
 876
 877 /*** Input Pin implementation ***/
 878
 879 static inline BaseInputPin *impl_BaseInputPin_from_IPin( IPin *iface )
 880 {
 881     return CONTAINING_RECORD(iface, BaseInputPin, pin.IPin_iface);
 882 }
 883
 884 static inline BaseInputPin *impl_BaseInputPin_from_BasePin( BasePin *iface )
 885 {
 886     return CONTAINING_RECORD(iface, BaseInputPin, pin);
 887 }
 888
 889 HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 890 {
 891     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 892
 893     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 894
 895     *ppv = NULL;
 896
 897     if (IsEqualIID(riid, &IID_IUnknown))
 898         *ppv = iface;
 899     else if (IsEqualIID(riid, &IID_IPin))
 900         *ppv = iface;
 901     else if (IsEqualIID(riid, &IID_IMemInputPin))
 902         *ppv = &This->IMemInputPin_iface;
 903     else if (IsEqualIID(riid, &IID_IMediaSeeking))
 904     {
 905         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv);
 906     }
 907
 908     if (*ppv)
 909     {
 910         IUnknown_AddRef((IUnknown *)(*ppv));
 911         return S_OK;
 912     }
 913
 914     FIXME("No interface for %s!\n", debugstr_guid(riid));
 915
 916     return E_NOINTERFACE;
 917 }
 918
 919 ULONG WINAPI BaseInputPinImpl_Release(IPin * iface)
 920 {
 921     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 922     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 923
 924     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 925
 926     if (!refCount)
 927     {
 928         FreeMediaType(&This->pin.mtCurrent);
 929         if (This->pAllocator)
 930             IMemAllocator_Release(This->pAllocator);
 931         This->pAllocator = NULL;
 932         This->pin.IPin_iface.lpVtbl = NULL;
 933         CoTaskMemFree(This);
 934         return 0;
 935     }
 936     else
 937         return refCount;
 938 }
 939
 940 HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt)
 941 {
 942     ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt);
 943
 944     return E_UNEXPECTED;
 945 }
 946
 947
 948 HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 949 {
 950     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 951     PIN_DIRECTION pindirReceive;
 952     HRESULT hr = S_OK;
 953
 954     TRACE("(%p, %p)\n", pReceivePin, pmt);
 955     dump_AM_MEDIA_TYPE(pmt);
 956
 957     EnterCriticalSection(This->pin.pCritSec);
 958     {
 959         if (This->pin.pConnectedTo)
 960             hr = VFW_E_ALREADY_CONNECTED;
 961
 962         if (SUCCEEDED(hr) && This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, pmt) != S_OK)
 963             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 964                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 965
 966         if (SUCCEEDED(hr))
 967         {
 968             IPin_QueryDirection(pReceivePin, &pindirReceive);
 969
 970             if (pindirReceive != PINDIR_OUTPUT)
 971             {
 972                 ERR("Can't connect from non-output pin\n");
 973                 hr = VFW_E_INVALID_DIRECTION;
 974             }
 975         }
 976
 977         if (SUCCEEDED(hr))
 978         {
 979             CopyMediaType(&This->pin.mtCurrent, pmt);
 980             This->pin.pConnectedTo = pReceivePin;
 981             IPin_AddRef(pReceivePin);
 982         }
 983     }
 984     LeaveCriticalSection(This->pin.pCritSec);
 985
 986     return hr;
 987 }
 988
 989 static HRESULT deliver_endofstream(IPin* pin, LPVOID unused)
 990 {
 991     return IPin_EndOfStream( pin );
 992 }
 993
 994 HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 995 {
 996     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 997
 998     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 999
1000     return (This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, pmt) == S_OK ? S_OK : S_FALSE);
1001 }
1002
1003 HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface)
1004 {
1005     HRESULT hr = S_OK;
1006     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1007
1008     TRACE("(%p)\n", This);
1009
1010     EnterCriticalSection(This->pin.pCritSec);
1011     if (This->flushing)
1012         hr = S_FALSE;
1013     else
1014         This->end_of_stream = 1;
1015     LeaveCriticalSection(This->pin.pCritSec);
1016
1017     if (hr == S_OK)
1018         hr = SendFurther( iface, deliver_endofstream, NULL, NULL );
1019     return hr;
1020 }
1021
1022 static HRESULT deliver_beginflush(IPin* pin, LPVOID unused)
1023 {
1024     return IPin_BeginFlush( pin );
1025 }
1026
1027 HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface)
1028 {
1029     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1030     HRESULT hr;
1031     TRACE("() semi-stub\n");
1032
1033     EnterCriticalSection(This->pin.pCritSec);
1034     This->flushing = 1;
1035
1036     hr = SendFurther( iface, deliver_beginflush, NULL, NULL );
1037     LeaveCriticalSection(This->pin.pCritSec);
1038
1039     return hr;
1040 }
1041
1042 static HRESULT deliver_endflush(IPin* pin, LPVOID unused)
1043 {
1044     return IPin_EndFlush( pin );
1045 }
1046
1047 HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface)
1048 {
1049     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1050     HRESULT hr;
1051     TRACE("(%p)\n", This);
1052
1053     EnterCriticalSection(This->pin.pCritSec);
1054     This->flushing = This->end_of_stream = 0;
1055
1056     hr = SendFurther( iface, deliver_endflush, NULL, NULL );
1057     LeaveCriticalSection(This->pin.pCritSec);
1058
1059     return hr;
1060 }
1061
1062 typedef struct newsegmentargs
1063 {
1064     REFERENCE_TIME tStart, tStop;
1065     double rate;
1066 } newsegmentargs;
1067
1068 static HRESULT deliver_newsegment(IPin *pin, LPVOID data)
1069 {
1070     newsegmentargs *args = data;
1071     return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate);
1072 }
1073
1074 HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
1075 {
1076     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1077     newsegmentargs args;
1078
1079     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
1080
1081     args.tStart = This->pin.tStart = tStart;
1082     args.tStop = This->pin.tStop = tStop;
1083     args.rate = This->pin.dRate = dRate;
1084
1085     return SendFurther( iface, deliver_newsegment, &args, NULL );
1086 }
1087
1088 static const IPinVtbl InputPin_Vtbl =
1089 {
1090     BaseInputPinImpl_QueryInterface,
1091     BasePinImpl_AddRef,
1092     BaseInputPinImpl_Release,
1093     BaseInputPinImpl_Connect,
1094     BaseInputPinImpl_ReceiveConnection,
1095     BasePinImpl_Disconnect,
1096     BasePinImpl_ConnectedTo,
1097     BasePinImpl_ConnectionMediaType,
1098     BasePinImpl_QueryPinInfo,
1099     BasePinImpl_QueryDirection,
1100     BasePinImpl_QueryId,
1101     BaseInputPinImpl_QueryAccept,
1102     BasePinImpl_EnumMediaTypes,
1103     BasePinImpl_QueryInternalConnections,
1104     BaseInputPinImpl_EndOfStream,
1105     BaseInputPinImpl_BeginFlush,
1106     BaseInputPinImpl_EndFlush,
1107     BaseInputPinImpl_NewSegment
1108 };
1109
1110 /*** IMemInputPin implementation ***/
1111
1112 static inline BaseInputPin *impl_from_IMemInputPin( IMemInputPin *iface )
1113 {
1114     return CONTAINING_RECORD(iface, BaseInputPin, IMemInputPin_iface);
1115 }
1116
1117 static HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv)
1118 {
1119     BaseInputPin *This = impl_from_IMemInputPin(iface);
1120
1121     return IPin_QueryInterface(&This->pin.IPin_iface, riid, ppv);
1122 }
1123
1124 static ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface)
1125 {
1126     BaseInputPin *This = impl_from_IMemInputPin(iface);
1127
1128     return IPin_AddRef(&This->pin.IPin_iface);
1129 }
1130
1131 static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
1132 {
1133     BaseInputPin *This = impl_from_IMemInputPin(iface);
1134
1135     return IPin_Release(&This->pin.IPin_iface);
1136 }
1137
1138 static HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator)
1139 {
1140     BaseInputPin *This = impl_from_IMemInputPin(iface);
1141
1142     TRACE("(%p/%p)->(%p)\n", This, iface, ppAllocator);
1143
1144     *ppAllocator = This->pAllocator;
1145     if (*ppAllocator)
1146         IMemAllocator_AddRef(*ppAllocator);
1147
1148     return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR;
1149 }
1150
1151 static HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly)
1152 {
1153     BaseInputPin *This = impl_from_IMemInputPin(iface);
1154
1155     TRACE("(%p/%p)->(%p, %d)\n", This, iface, pAllocator, bReadOnly);
1156
1157     if (bReadOnly)
1158         FIXME("Read only flag not handled yet!\n");
1159
1160     /* FIXME: Should we release the allocator on disconnection? */
1161     if (!pAllocator)
1162     {
1163         WARN("Null allocator\n");
1164         return E_POINTER;
1165     }
1166
1167     if (This->preferred_allocator && pAllocator != This->preferred_allocator)
1168         return E_FAIL;
1169
1170     if (This->pAllocator)
1171         IMemAllocator_Release(This->pAllocator);
1172     This->pAllocator = pAllocator;
1173     if (This->pAllocator)
1174         IMemAllocator_AddRef(This->pAllocator);
1175
1176     return S_OK;
1177 }
1178
1179 static HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps)
1180 {
1181     BaseInputPin *This = impl_from_IMemInputPin(iface);
1182
1183     TRACE("(%p/%p)->(%p)\n", This, iface, pProps);
1184
1185     /* override this method if you have any specific requirements */
1186
1187     return E_NOTIMPL;
1188 }
1189
1190 static HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample)
1191 {
1192     BaseInputPin *This = impl_from_IMemInputPin(iface);
1193     HRESULT hr = S_FALSE;
1194
1195     /* this trace commented out for performance reasons */
1196     /*TRACE("(%p/%p)->(%p)\n", This, iface, pSample);*/
1197     if (This->pFuncsTable->pfnReceive)
1198         hr = This->pFuncsTable->pfnReceive(This, pSample);
1199     return hr;
1200 }
1201
1202 static HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, LONG nSamples, LONG *nSamplesProcessed)
1203 {
1204     HRESULT hr = S_OK;
1205     BaseInputPin *This = impl_from_IMemInputPin(iface);
1206
1207     TRACE("(%p/%p)->(%p, %d, %p)\n", This, iface, pSamples, nSamples, nSamplesProcessed);
1208
1209     for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++)
1210     {
1211         hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]);
1212         if (hr != S_OK)
1213             break;
1214     }
1215
1216     return hr;
1217 }
1218
1219 static HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface)
1220 {
1221     BaseInputPin *This = impl_from_IMemInputPin(iface);
1222
1223     TRACE("(%p/%p)->()\n", This, iface);
1224
1225     return S_OK;
1226 }
1227
1228 static const IMemInputPinVtbl MemInputPin_Vtbl =
1229 {
1230     MemInputPin_QueryInterface,
1231     MemInputPin_AddRef,
1232     MemInputPin_Release,
1233     MemInputPin_GetAllocator,
1234     MemInputPin_NotifyAllocator,
1235     MemInputPin_GetAllocatorRequirements,
1236     MemInputPin_Receive,
1237     MemInputPin_ReceiveMultiple,
1238     MemInputPin_ReceiveCanBlock
1239 };
1240
1241 static HRESULT InputPin_Init(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1242                              const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1243                              LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, BaseInputPin * pPinImpl)
1244 {
1245     TRACE("\n");
1246
1247     /* Common attributes */
1248     pPinImpl->pin.refCount = 1;
1249     pPinImpl->pin.pConnectedTo = NULL;
1250     pPinImpl->pin.pCritSec = pCritSec;
1251     pPinImpl->pin.tStart = 0;
1252     pPinImpl->pin.tStop = 0;
1253     pPinImpl->pin.dRate = 1.0;
1254     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1255     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
1256     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
1257
1258     /* Input pin attributes */
1259     pPinImpl->pFuncsTable = pBaseInputFuncsTable;
1260     pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator;
1261     if (pPinImpl->preferred_allocator)
1262         IMemAllocator_AddRef(pPinImpl->preferred_allocator);
1263     pPinImpl->pin.IPin_iface.lpVtbl = InputPin_Vtbl;
1264     pPinImpl->IMemInputPin_iface.lpVtbl = &MemInputPin_Vtbl;
1265     pPinImpl->flushing = pPinImpl->end_of_stream = 0;
1266
1267     return S_OK;
1268 }
1269
1270 HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1271                                const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1272                                LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, IPin ** ppPin)
1273 {
1274     BaseInputPin * pPinImpl;
1275
1276     *ppPin = NULL;
1277
1278     assert(pBaseFuncsTable->pfnCheckMediaType);
1279
1280     if (pPinInfo->dir != PINDIR_INPUT)
1281     {
1282         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
1283         return E_INVALIDARG;
1284     }
1285
1286     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
1287
1288     if (!pPinImpl)
1289         return E_OUTOFMEMORY;
1290
1291     if (SUCCEEDED(InputPin_Init(InputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseInputFuncsTable, pCritSec, allocator, pPinImpl)))
1292     {
1293         *ppPin = (IPin *)pPinImpl;
1294         return S_OK;
1295     }
1296
1297     CoTaskMemFree(pPinImpl);
1298     return E_FAIL;
1299 }