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         if (This->pAllocator)
 406             IMemAllocator_Release(This->pAllocator);
 407         This->pAllocator = NULL;
 408         CoTaskMemFree(This);
 409         return 0;
 410     }
 411     return refCount;
 412 }
 413
 414 HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 415 {
 416     HRESULT hr;
 417     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 418
 419     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 420     dump_AM_MEDIA_TYPE(pmt);
 421
 422     /* If we try to connect to ourselves, we will definitely deadlock.
 423      * There are other cases where we could deadlock too, but this
 424      * catches the obvious case */
 425     assert(pReceivePin != iface);
 426
 427     EnterCriticalSection(This->pin.pCritSec);
 428     {
 429         /* if we have been a specific type to connect with, then we can either connect
 430          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 431         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 432             hr = This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmt);
 433         else
 434         {
 435             /* negotiate media type */
 436
 437             IEnumMediaTypes * pEnumCandidates;
 438             AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */
 439
 440             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 441             {
 442                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 443
 444                 /* try this filter's media types first */
 445                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 446                 {
 447                     assert(pmtCandidate);
 448                     dump_AM_MEDIA_TYPE(pmtCandidate);
 449                     if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype)
 450                         && !IsEqualGUID(&GUID_NULL, &pmtCandidate->formattype))
 451                         assert(pmtCandidate->pbFormat);
 452                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 453                         (This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmtCandidate) == S_OK))
 454                     {
 455                         hr = S_OK;
 456                         DeleteMediaType(pmtCandidate);
 457                         break;
 458                     }
 459                     DeleteMediaType(pmtCandidate);
 460                     pmtCandidate = NULL;
 461                 }
 462                 IEnumMediaTypes_Release(pEnumCandidates);
 463             }
 464
 465             /* then try receiver filter's media types */
 466             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 467             {
 468                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 469
 470                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 471                 {
 472                     assert(pmtCandidate);
 473                     dump_AM_MEDIA_TYPE(pmtCandidate);
 474                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 475                         (This->pin.pFuncsTable->pfnAttemptConnection(&This->pin, pReceivePin, pmtCandidate) == S_OK))
 476                     {
 477                         hr = S_OK;
 478                         DeleteMediaType(pmtCandidate);
 479                         break;
 480                     }
 481                     DeleteMediaType(pmtCandidate);
 482                     pmtCandidate = NULL;
 483                 } /* while */
 484                 IEnumMediaTypes_Release(pEnumCandidates);
 485             } /* if not found */
 486         } /* if negotiate media type */
 487     } /* if succeeded */
 488     LeaveCriticalSection(This->pin.pCritSec);
 489
 490     TRACE(" -- %x\n", hr);
 491     return hr;
 492 }
 493
 494 HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 495 {
 496     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 497
 498     return E_UNEXPECTED;
 499 }
 500
 501 HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface)
 502 {
 503     HRESULT hr;
 504     BaseOutputPin *This = impl_BaseOutputPin_from_IPin(iface);
 505
 506     TRACE("()\n");
 507
 508     EnterCriticalSection(This->pin.pCritSec);
 509     {
 510         if (This->pMemInputPin)
 511         {
 512             IMemInputPin_Release(This->pMemInputPin);
 513             This->pMemInputPin = NULL;
 514         }
 515         if (This->pin.pConnectedTo)
 516         {
 517             IPin_Release(This->pin.pConnectedTo);
 518             This->pin.pConnectedTo = NULL;
 519             FreeMediaType(&This->pin.mtCurrent);
 520             ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent));
 521             hr = S_OK;
 522         }
 523         else
 524             hr = S_FALSE;
 525     }
 526     LeaveCriticalSection(This->pin.pCritSec);
 527
 528     return hr;
 529 }
 530
 531 HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface)
 532 {
 533     TRACE("()\n");
 534
 535     /* not supposed to do anything in an output pin */
 536
 537     return E_UNEXPECTED;
 538 }
 539
 540 HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface)
 541 {
 542     TRACE("(%p)->()\n", iface);
 543
 544     /* not supposed to do anything in an output pin */
 545
 546     return E_UNEXPECTED;
 547 }
 548
 549 HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface)
 550 {
 551     TRACE("(%p)->()\n", iface);
 552
 553     /* not supposed to do anything in an output pin */
 554
 555     return E_UNEXPECTED;
 556 }
 557
 558 static const IPinVtbl OutputPin_Vtbl =
 559 {
 560     BaseOutputPinImpl_QueryInterface,
 561     BasePinImpl_AddRef,
 562     BaseOutputPinImpl_Release,
 563     BaseOutputPinImpl_Connect,
 564     BaseOutputPinImpl_ReceiveConnection,
 565     BaseOutputPinImpl_Disconnect,
 566     BasePinImpl_ConnectedTo,
 567     BasePinImpl_ConnectionMediaType,
 568     BasePinImpl_QueryPinInfo,
 569     BasePinImpl_QueryDirection,
 570     BasePinImpl_QueryId,
 571     BasePinImpl_QueryAccept,
 572     BasePinImpl_EnumMediaTypes,
 573     BasePinImpl_QueryInternalConnections,
 574     BaseOutputPinImpl_EndOfStream,
 575     BaseOutputPinImpl_BeginFlush,
 576     BaseOutputPinImpl_EndFlush,
 577     BasePinImpl_NewSegment
 578 };
 579
 580 HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin *This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags)
 581 {
 582     HRESULT hr;
 583
 584     TRACE("(%p, %p, %p, %x)\n", ppSample, tStart, tStop, dwFlags);
 585
 586     if (!This->pin.pConnectedTo)
 587         hr = VFW_E_NOT_CONNECTED;
 588     else
 589     {
 590         hr = IMemAllocator_GetBuffer(This->pAllocator, ppSample, tStart, tStop, dwFlags);
 591
 592         if (SUCCEEDED(hr))
 593             hr = IMediaSample_SetTime(*ppSample, tStart, tStop);
 594     }
 595
 596     return hr;
 597 }
 598
 599 /* replaces OutputPin_SendSample */
 600 HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample)
 601 {
 602     HRESULT hr = S_OK;
 603     IMemInputPin * pMemConnected = NULL;
 604     PIN_INFO pinInfo;
 605
 606     EnterCriticalSection(This->pin.pCritSec);
 607     {
 608         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 609             hr = VFW_E_NOT_CONNECTED;
 610         else
 611         {
 612             /* we don't have the lock held when using This->pMemInputPin,
 613              * so we need to AddRef it to stop it being deleted while we are
 614              * using it. Same with its filter. */
 615             pMemConnected = This->pMemInputPin;
 616             IMemInputPin_AddRef(pMemConnected);
 617             hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo);
 618         }
 619     }
 620     LeaveCriticalSection(This->pin.pCritSec);
 621
 622     if (SUCCEEDED(hr))
 623     {
 624         /* NOTE: if we are in a critical section when Receive is called
 625          * then it causes some problems (most notably with the native Video
 626          * Renderer) if we are re-entered for whatever reason */
 627         hr = IMemInputPin_Receive(pMemConnected, pSample);
 628
 629         /* If the filter's destroyed, tell upstream to stop sending data */
 630         if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr))
 631             hr = S_FALSE;
 632     }
 633     if (pMemConnected)
 634         IMemInputPin_Release(pMemConnected);
 635
 636     return hr;
 637 }
 638
 639 /* replaces OutputPin_CommitAllocator */
 640 HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This)
 641 {
 642     HRESULT hr = S_OK;
 643
 644     TRACE("(%p)->()\n", This);
 645
 646     EnterCriticalSection(This->pin.pCritSec);
 647     {
 648         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 649             hr = VFW_E_NOT_CONNECTED;
 650         else
 651             hr = IMemAllocator_Commit(This->pAllocator);
 652     }
 653     LeaveCriticalSection(This->pin.pCritSec);
 654
 655     TRACE("--> %08x\n", hr);
 656     return hr;
 657 }
 658
 659 /* replaces OutputPin_DecommitAllocator */
 660 HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This)
 661 {
 662     HRESULT hr = S_OK;
 663
 664     TRACE("(%p)->()\n", This);
 665
 666     EnterCriticalSection(This->pin.pCritSec);
 667     {
 668         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 669             hr = VFW_E_NOT_CONNECTED;
 670         else
 671             hr = IMemAllocator_Decommit(This->pAllocator);
 672     }
 673     LeaveCriticalSection(This->pin.pCritSec);
 674
 675     TRACE("--> %08x\n", hr);
 676     return hr;
 677 }
 678
 679 /* replaces OutputPin_DeliverDisconnect */
 680 HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This)
 681 {
 682     HRESULT hr;
 683
 684     TRACE("(%p)->()\n", This);
 685
 686     EnterCriticalSection(This->pin.pCritSec);
 687     {
 688         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 689             hr = VFW_E_NOT_CONNECTED;
 690         else
 691         {
 692             hr = IMemAllocator_Decommit(This->pAllocator);
 693
 694             if (SUCCEEDED(hr))
 695                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 696         }
 697         IPin_Disconnect(&This->pin.IPin_iface);
 698     }
 699     LeaveCriticalSection(This->pin.pCritSec);
 700
 701     return hr;
 702 }
 703
 704 HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc)
 705 {
 706     return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc);
 707 }
 708
 709 HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc)
 710 {
 711     HRESULT hr;
 712
 713     hr = IMemInputPin_GetAllocator(pPin, pAlloc);
 714
 715     if (hr == VFW_E_NO_ALLOCATOR)
 716         /* Input pin provides no allocator, use standard memory allocator */
 717         hr = BaseOutputPinImpl_InitAllocator(This, pAlloc);
 718
 719     if (SUCCEEDED(hr))
 720     {
 721         ALLOCATOR_PROPERTIES rProps;
 722         ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES));
 723
 724         IMemInputPin_GetAllocatorRequirements(pPin, &rProps);
 725         hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps);
 726     }
 727
 728     if (SUCCEEDED(hr))
 729         hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE);
 730
 731     return hr;
 732 }
 733
 734 /*** The Construct functions ***/
 735
 736 /* Function called as a helper to IPin_Connect */
 737 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 738 HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 739 {
 740     BaseOutputPin *This = impl_BaseOutputPin_from_BasePin(iface);
 741     HRESULT hr;
 742     IMemAllocator * pMemAlloc = NULL;
 743
 744     TRACE("(%p, %p)\n", pReceivePin, pmt);
 745     dump_AM_MEDIA_TYPE(pmt);
 746
 747     /* FIXME: call queryacceptproc */
 748
 749     This->pin.pConnectedTo = pReceivePin;
 750     IPin_AddRef(pReceivePin);
 751     CopyMediaType(&This->pin.mtCurrent, pmt);
 752
 753     hr = IPin_ReceiveConnection(pReceivePin, &iface->IPin_iface, pmt);
 754
 755     /* get the IMemInputPin interface we will use to deliver samples to the
 756      * connected pin */
 757     if (SUCCEEDED(hr))
 758     {
 759         This->pMemInputPin = NULL;
 760         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 761
 762         if (SUCCEEDED(hr))
 763         {
 764             hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc);
 765             if (SUCCEEDED(hr))
 766                 This->pAllocator = pMemAlloc;
 767             else if (pMemAlloc)
 768                 IMemAllocator_Release(pMemAlloc);
 769         }
 770
 771         /* break connection if we couldn't get the allocator */
 772         if (FAILED(hr))
 773         {
 774             if (This->pMemInputPin)
 775                 IMemInputPin_Release(This->pMemInputPin);
 776             This->pMemInputPin = NULL;
 777
 778             IPin_Disconnect(pReceivePin);
 779         }
 780     }
 781
 782     if (FAILED(hr))
 783     {
 784         IPin_Release(This->pin.pConnectedTo);
 785         This->pin.pConnectedTo = NULL;
 786         FreeMediaType(&This->pin.mtCurrent);
 787     }
 788
 789     TRACE(" -- %x\n", hr);
 790     return hr;
 791 }
 792
 793 static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable,  LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl)
 794 {
 795     TRACE("\n");
 796
 797     /* Common attributes */
 798     pPinImpl->pin.IPin_iface.lpVtbl = OutputPin_Vtbl;
 799     pPinImpl->pin.refCount = 1;
 800     pPinImpl->pin.pConnectedTo = NULL;
 801     pPinImpl->pin.pCritSec = pCritSec;
 802     pPinImpl->pin.tStart = 0;
 803     pPinImpl->pin.tStop = 0;
 804     pPinImpl->pin.dRate = 1.0;
 805     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 806     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
 807     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 808
 809     /* Output pin attributes */
 810     pPinImpl->pMemInputPin = NULL;
 811     pPinImpl->pAllocator = NULL;
 812     pPinImpl->pFuncsTable = pBaseOutputFuncsTable;
 813
 814     return S_OK;
 815 }
 816
 817 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)
 818 {
 819     BaseOutputPin * pPinImpl;
 820
 821     *ppPin = NULL;
 822
 823     if (pPinInfo->dir != PINDIR_OUTPUT)
 824     {
 825         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 826         return E_INVALIDARG;
 827     }
 828
 829     assert(outputpin_size >= sizeof(BaseOutputPin));
 830     assert(pBaseFuncsTable->pfnAttemptConnection);
 831
 832     pPinImpl = CoTaskMemAlloc(outputpin_size);
 833
 834     if (!pPinImpl)
 835         return E_OUTOFMEMORY;
 836
 837     if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl)))
 838     {
 839         *ppPin = &pPinImpl->pin.IPin_iface;
 840         return S_OK;
 841     }
 842
 843     CoTaskMemFree(pPinImpl);
 844     return E_FAIL;
 845 }
 846
 847 /*** Input Pin implementation ***/
 848
 849 static inline BaseInputPin *impl_BaseInputPin_from_IPin( IPin *iface )
 850 {
 851     return CONTAINING_RECORD(iface, BaseInputPin, pin.IPin_iface);
 852 }
 853
 854 static inline BaseInputPin *impl_BaseInputPin_from_BasePin( BasePin *iface )
 855 {
 856     return CONTAINING_RECORD(iface, BaseInputPin, pin);
 857 }
 858
 859 HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 860 {
 861     BaseInputPin *This = impl_BaseInputPin_from_IPin(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->IMemInputPin_iface;
 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 = impl_BaseInputPin_from_IPin(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.IPin_iface.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 = impl_BaseInputPin_from_IPin(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(&This->pin, 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 = impl_BaseInputPin_from_IPin(iface);
 967
 968     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 969
 970     return (This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, 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 = impl_BaseInputPin_from_IPin(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 = impl_BaseInputPin_from_IPin(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 = impl_BaseInputPin_from_IPin(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 = impl_BaseInputPin_from_IPin(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->pin.tStart = tStart;
1052     args.tStop = This->pin.tStop = tStop;
1053     args.rate = This->pin.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 CONTAINING_RECORD(iface, BaseInputPin, IMemInputPin_iface);
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(&This->pin.IPin_iface, 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(&This->pin.IPin_iface);
1099 }
1100
1101 static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
1102 {
1103     BaseInputPin *This = impl_from_IMemInputPin(iface);
1104
1105     return IPin_Release(&This->pin.IPin_iface);
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     pPinImpl->pin.tStart = 0;
1222     pPinImpl->pin.tStop = 0;
1223     pPinImpl->pin.dRate = 1.0;
1224     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1225     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
1226     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
1227
1228     /* Input pin attributes */
1229     pPinImpl->pFuncsTable = pBaseInputFuncsTable;
1230     pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator;
1231     if (pPinImpl->preferred_allocator)
1232         IMemAllocator_AddRef(pPinImpl->preferred_allocator);
1233     pPinImpl->pin.IPin_iface.lpVtbl = InputPin_Vtbl;
1234     pPinImpl->IMemInputPin_iface.lpVtbl = &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 }