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     EnterCriticalSection(This->pin.pCritSec);
 584     {
 585         if (!This->pin.pConnectedTo)
 586             hr = VFW_E_NOT_CONNECTED;
 587         else
 588         {
 589             IMemAllocator * pAlloc = NULL;
 590
 591             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 592
 593             if (SUCCEEDED(hr))
 594                 hr = IMemAllocator_GetBuffer(pAlloc, ppSample, tStart, tStop, dwFlags);
 595
 596             if (SUCCEEDED(hr))
 597                 hr = IMediaSample_SetTime(*ppSample, tStart, tStop);
 598
 599             if (pAlloc)
 600                 IMemAllocator_Release(pAlloc);
 601         }
 602     }
 603     LeaveCriticalSection(This->pin.pCritSec);
 604
 605     return hr;
 606 }
 607
 608 /* replaces OutputPin_SendSample */
 609 HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample)
 610 {
 611     HRESULT hr = S_OK;
 612     IMemInputPin * pMemConnected = NULL;
 613     PIN_INFO pinInfo;
 614
 615     EnterCriticalSection(This->pin.pCritSec);
 616     {
 617         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 618             hr = VFW_E_NOT_CONNECTED;
 619         else
 620         {
 621             /* we don't have the lock held when using This->pMemInputPin,
 622              * so we need to AddRef it to stop it being deleted while we are
 623              * using it. Same with its filter. */
 624             pMemConnected = This->pMemInputPin;
 625             IMemInputPin_AddRef(pMemConnected);
 626             hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo);
 627         }
 628     }
 629     LeaveCriticalSection(This->pin.pCritSec);
 630
 631     if (SUCCEEDED(hr))
 632     {
 633         /* NOTE: if we are in a critical section when Receive is called
 634          * then it causes some problems (most notably with the native Video
 635          * Renderer) if we are re-entered for whatever reason */
 636         hr = IMemInputPin_Receive(pMemConnected, pSample);
 637
 638         /* If the filter's destroyed, tell upstream to stop sending data */
 639         if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr))
 640             hr = S_FALSE;
 641     }
 642     if (pMemConnected)
 643         IMemInputPin_Release(pMemConnected);
 644
 645     return hr;
 646 }
 647
 648 /* replaces OutputPin_CommitAllocator */
 649 HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This)
 650 {
 651     HRESULT hr = S_OK;
 652
 653     TRACE("(%p)->()\n", This);
 654
 655     EnterCriticalSection(This->pin.pCritSec);
 656     {
 657         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 658             hr = VFW_E_NOT_CONNECTED;
 659         else
 660         {
 661             IMemAllocator * pAlloc = NULL;
 662
 663             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 664
 665             if (SUCCEEDED(hr))
 666                 hr = IMemAllocator_Commit(pAlloc);
 667
 668             if (pAlloc)
 669                 IMemAllocator_Release(pAlloc);
 670         }
 671     }
 672     LeaveCriticalSection(This->pin.pCritSec);
 673
 674     TRACE("--> %08x\n", hr);
 675     return hr;
 676 }
 677
 678 /* replaces OutputPin_DecommitAllocator */
 679 HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This)
 680 {
 681     HRESULT hr = S_OK;
 682
 683     TRACE("(%p)->()\n", This);
 684
 685     EnterCriticalSection(This->pin.pCritSec);
 686     {
 687         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 688             hr = VFW_E_NOT_CONNECTED;
 689         else
 690         {
 691             IMemAllocator * pAlloc = NULL;
 692
 693             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 694
 695             if (SUCCEEDED(hr))
 696                 hr = IMemAllocator_Decommit(pAlloc);
 697
 698             if (pAlloc)
 699                 IMemAllocator_Release(pAlloc);
 700         }
 701     }
 702     LeaveCriticalSection(This->pin.pCritSec);
 703
 704     TRACE("--> %08x\n", hr);
 705     return hr;
 706 }
 707
 708 /* replaces OutputPin_DeliverDisconnect */
 709 HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This)
 710 {
 711     HRESULT hr;
 712
 713     TRACE("(%p)->()\n", This);
 714
 715     EnterCriticalSection(This->pin.pCritSec);
 716     {
 717         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 718             hr = VFW_E_NOT_CONNECTED;
 719         else
 720         {
 721             IMemAllocator * pAlloc = NULL;
 722
 723             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 724
 725             if (SUCCEEDED(hr))
 726                 hr = IMemAllocator_Decommit(pAlloc);
 727
 728             if (pAlloc)
 729                 IMemAllocator_Release(pAlloc);
 730
 731             if (SUCCEEDED(hr))
 732                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 733         }
 734         IPin_Disconnect(&This->pin.IPin_iface);
 735     }
 736     LeaveCriticalSection(This->pin.pCritSec);
 737
 738     return hr;
 739 }
 740
 741 HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc)
 742 {
 743     return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc);
 744 }
 745
 746 HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc)
 747 {
 748     HRESULT hr;
 749
 750     hr = IMemInputPin_GetAllocator(pPin, pAlloc);
 751
 752     if (hr == VFW_E_NO_ALLOCATOR)
 753         /* Input pin provides no allocator, use standard memory allocator */
 754         hr = BaseOutputPinImpl_InitAllocator(This, pAlloc);
 755
 756     if (SUCCEEDED(hr))
 757     {
 758         ALLOCATOR_PROPERTIES rProps;
 759         ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES));
 760
 761         IMemInputPin_GetAllocatorRequirements(pPin, &rProps);
 762         hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps);
 763     }
 764
 765     if (SUCCEEDED(hr))
 766         hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE);
 767
 768     return hr;
 769 }
 770
 771 /*** The Construct functions ***/
 772
 773 /* Function called as a helper to IPin_Connect */
 774 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 775 HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 776 {
 777     BaseOutputPin *This = impl_BaseOutputPin_from_BasePin(iface);
 778     HRESULT hr;
 779     IMemAllocator * pMemAlloc = NULL;
 780
 781     TRACE("(%p, %p)\n", pReceivePin, pmt);
 782     dump_AM_MEDIA_TYPE(pmt);
 783
 784     /* FIXME: call queryacceptproc */
 785
 786     This->pin.pConnectedTo = pReceivePin;
 787     IPin_AddRef(pReceivePin);
 788     CopyMediaType(&This->pin.mtCurrent, pmt);
 789
 790     hr = IPin_ReceiveConnection(pReceivePin, &iface->IPin_iface, pmt);
 791
 792     /* get the IMemInputPin interface we will use to deliver samples to the
 793      * connected pin */
 794     if (SUCCEEDED(hr))
 795     {
 796         This->pMemInputPin = NULL;
 797         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 798
 799         if (SUCCEEDED(hr))
 800         {
 801             hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc);
 802             if (pMemAlloc)
 803                 IMemAllocator_Release(pMemAlloc);
 804         }
 805
 806         /* break connection if we couldn't get the allocator */
 807         if (FAILED(hr))
 808         {
 809             if (This->pMemInputPin)
 810                 IMemInputPin_Release(This->pMemInputPin);
 811             This->pMemInputPin = NULL;
 812
 813             IPin_Disconnect(pReceivePin);
 814         }
 815     }
 816
 817     if (FAILED(hr))
 818     {
 819         IPin_Release(This->pin.pConnectedTo);
 820         This->pin.pConnectedTo = NULL;
 821         FreeMediaType(&This->pin.mtCurrent);
 822     }
 823
 824     TRACE(" -- %x\n", hr);
 825     return hr;
 826 }
 827
 828 static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable,  LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl)
 829 {
 830     TRACE("\n");
 831
 832     /* Common attributes */
 833     pPinImpl->pin.IPin_iface.lpVtbl = OutputPin_Vtbl;
 834     pPinImpl->pin.refCount = 1;
 835     pPinImpl->pin.pConnectedTo = NULL;
 836     pPinImpl->pin.pCritSec = pCritSec;
 837     pPinImpl->pin.tStart = 0;
 838     pPinImpl->pin.tStop = 0;
 839     pPinImpl->pin.dRate = 1.0;
 840     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 841     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
 842     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 843
 844     /* Output pin attributes */
 845     pPinImpl->pMemInputPin = NULL;
 846     pPinImpl->pFuncsTable = pBaseOutputFuncsTable;
 847
 848     return S_OK;
 849 }
 850
 851 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)
 852 {
 853     BaseOutputPin * pPinImpl;
 854
 855     *ppPin = NULL;
 856
 857     if (pPinInfo->dir != PINDIR_OUTPUT)
 858     {
 859         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 860         return E_INVALIDARG;
 861     }
 862
 863     assert(outputpin_size >= sizeof(BaseOutputPin));
 864     assert(pBaseFuncsTable->pfnAttemptConnection);
 865
 866     pPinImpl = CoTaskMemAlloc(outputpin_size);
 867
 868     if (!pPinImpl)
 869         return E_OUTOFMEMORY;
 870
 871     if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl)))
 872     {
 873         *ppPin = &pPinImpl->pin.IPin_iface;
 874         return S_OK;
 875     }
 876
 877     CoTaskMemFree(pPinImpl);
 878     return E_FAIL;
 879 }
 880
 881 /*** Input Pin implementation ***/
 882
 883 static inline BaseInputPin *impl_BaseInputPin_from_IPin( IPin *iface )
 884 {
 885     return CONTAINING_RECORD(iface, BaseInputPin, pin.IPin_iface);
 886 }
 887
 888 static inline BaseInputPin *impl_BaseInputPin_from_BasePin( BasePin *iface )
 889 {
 890     return CONTAINING_RECORD(iface, BaseInputPin, pin);
 891 }
 892
 893 HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 894 {
 895     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 896
 897     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 898
 899     *ppv = NULL;
 900
 901     if (IsEqualIID(riid, &IID_IUnknown))
 902         *ppv = iface;
 903     else if (IsEqualIID(riid, &IID_IPin))
 904         *ppv = iface;
 905     else if (IsEqualIID(riid, &IID_IMemInputPin))
 906         *ppv = &This->IMemInputPin_iface;
 907     else if (IsEqualIID(riid, &IID_IMediaSeeking))
 908     {
 909         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv);
 910     }
 911
 912     if (*ppv)
 913     {
 914         IUnknown_AddRef((IUnknown *)(*ppv));
 915         return S_OK;
 916     }
 917
 918     FIXME("No interface for %s!\n", debugstr_guid(riid));
 919
 920     return E_NOINTERFACE;
 921 }
 922
 923 ULONG WINAPI BaseInputPinImpl_Release(IPin * iface)
 924 {
 925     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 926     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 927
 928     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 929
 930     if (!refCount)
 931     {
 932         FreeMediaType(&This->pin.mtCurrent);
 933         if (This->pAllocator)
 934             IMemAllocator_Release(This->pAllocator);
 935         This->pAllocator = NULL;
 936         This->pin.IPin_iface.lpVtbl = NULL;
 937         CoTaskMemFree(This);
 938         return 0;
 939     }
 940     else
 941         return refCount;
 942 }
 943
 944 HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt)
 945 {
 946     ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt);
 947
 948     return E_UNEXPECTED;
 949 }
 950
 951
 952 HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 953 {
 954     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
 955     PIN_DIRECTION pindirReceive;
 956     HRESULT hr = S_OK;
 957
 958     TRACE("(%p, %p)\n", pReceivePin, pmt);
 959     dump_AM_MEDIA_TYPE(pmt);
 960
 961     EnterCriticalSection(This->pin.pCritSec);
 962     {
 963         if (This->pin.pConnectedTo)
 964             hr = VFW_E_ALREADY_CONNECTED;
 965
 966         if (SUCCEEDED(hr) && This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, pmt) != S_OK)
 967             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 968                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 969
 970         if (SUCCEEDED(hr))
 971         {
 972             IPin_QueryDirection(pReceivePin, &pindirReceive);
 973
 974             if (pindirReceive != PINDIR_OUTPUT)
 975             {
 976                 ERR("Can't connect from non-output pin\n");
 977                 hr = VFW_E_INVALID_DIRECTION;
 978             }
 979         }
 980
 981         if (SUCCEEDED(hr))
 982         {
 983             CopyMediaType(&This->pin.mtCurrent, pmt);
 984             This->pin.pConnectedTo = pReceivePin;
 985             IPin_AddRef(pReceivePin);
 986         }
 987     }
 988     LeaveCriticalSection(This->pin.pCritSec);
 989
 990     return hr;
 991 }
 992
 993 static HRESULT deliver_endofstream(IPin* pin, LPVOID unused)
 994 {
 995     return IPin_EndOfStream( pin );
 996 }
 997
 998 HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 999 {
1000     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1001
1002     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
1003
1004     return (This->pin.pFuncsTable->pfnCheckMediaType(&This->pin, pmt) == S_OK ? S_OK : S_FALSE);
1005 }
1006
1007 HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface)
1008 {
1009     HRESULT hr = S_OK;
1010     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1011
1012     TRACE("(%p)\n", This);
1013
1014     EnterCriticalSection(This->pin.pCritSec);
1015     if (This->flushing)
1016         hr = S_FALSE;
1017     else
1018         This->end_of_stream = 1;
1019     LeaveCriticalSection(This->pin.pCritSec);
1020
1021     if (hr == S_OK)
1022         hr = SendFurther( iface, deliver_endofstream, NULL, NULL );
1023     return hr;
1024 }
1025
1026 static HRESULT deliver_beginflush(IPin* pin, LPVOID unused)
1027 {
1028     return IPin_BeginFlush( pin );
1029 }
1030
1031 HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface)
1032 {
1033     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1034     HRESULT hr;
1035     TRACE("() semi-stub\n");
1036
1037     EnterCriticalSection(This->pin.pCritSec);
1038     This->flushing = 1;
1039
1040     hr = SendFurther( iface, deliver_beginflush, NULL, NULL );
1041     LeaveCriticalSection(This->pin.pCritSec);
1042
1043     return hr;
1044 }
1045
1046 static HRESULT deliver_endflush(IPin* pin, LPVOID unused)
1047 {
1048     return IPin_EndFlush( pin );
1049 }
1050
1051 HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface)
1052 {
1053     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1054     HRESULT hr;
1055     TRACE("(%p)\n", This);
1056
1057     EnterCriticalSection(This->pin.pCritSec);
1058     This->flushing = This->end_of_stream = 0;
1059
1060     hr = SendFurther( iface, deliver_endflush, NULL, NULL );
1061     LeaveCriticalSection(This->pin.pCritSec);
1062
1063     return hr;
1064 }
1065
1066 typedef struct newsegmentargs
1067 {
1068     REFERENCE_TIME tStart, tStop;
1069     double rate;
1070 } newsegmentargs;
1071
1072 static HRESULT deliver_newsegment(IPin *pin, LPVOID data)
1073 {
1074     newsegmentargs *args = data;
1075     return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate);
1076 }
1077
1078 HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
1079 {
1080     BaseInputPin *This = impl_BaseInputPin_from_IPin(iface);
1081     newsegmentargs args;
1082
1083     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
1084
1085     args.tStart = This->pin.tStart = tStart;
1086     args.tStop = This->pin.tStop = tStop;
1087     args.rate = This->pin.dRate = dRate;
1088
1089     return SendFurther( iface, deliver_newsegment, &args, NULL );
1090 }
1091
1092 static const IPinVtbl InputPin_Vtbl =
1093 {
1094     BaseInputPinImpl_QueryInterface,
1095     BasePinImpl_AddRef,
1096     BaseInputPinImpl_Release,
1097     BaseInputPinImpl_Connect,
1098     BaseInputPinImpl_ReceiveConnection,
1099     BasePinImpl_Disconnect,
1100     BasePinImpl_ConnectedTo,
1101     BasePinImpl_ConnectionMediaType,
1102     BasePinImpl_QueryPinInfo,
1103     BasePinImpl_QueryDirection,
1104     BasePinImpl_QueryId,
1105     BaseInputPinImpl_QueryAccept,
1106     BasePinImpl_EnumMediaTypes,
1107     BasePinImpl_QueryInternalConnections,
1108     BaseInputPinImpl_EndOfStream,
1109     BaseInputPinImpl_BeginFlush,
1110     BaseInputPinImpl_EndFlush,
1111     BaseInputPinImpl_NewSegment
1112 };
1113
1114 /*** IMemInputPin implementation ***/
1115
1116 static inline BaseInputPin *impl_from_IMemInputPin( IMemInputPin *iface )
1117 {
1118     return CONTAINING_RECORD(iface, BaseInputPin, IMemInputPin_iface);
1119 }
1120
1121 static HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv)
1122 {
1123     BaseInputPin *This = impl_from_IMemInputPin(iface);
1124
1125     return IPin_QueryInterface(&This->pin.IPin_iface, riid, ppv);
1126 }
1127
1128 static ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface)
1129 {
1130     BaseInputPin *This = impl_from_IMemInputPin(iface);
1131
1132     return IPin_AddRef(&This->pin.IPin_iface);
1133 }
1134
1135 static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
1136 {
1137     BaseInputPin *This = impl_from_IMemInputPin(iface);
1138
1139     return IPin_Release(&This->pin.IPin_iface);
1140 }
1141
1142 static HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator)
1143 {
1144     BaseInputPin *This = impl_from_IMemInputPin(iface);
1145
1146     TRACE("(%p/%p)->(%p)\n", This, iface, ppAllocator);
1147
1148     *ppAllocator = This->pAllocator;
1149     if (*ppAllocator)
1150         IMemAllocator_AddRef(*ppAllocator);
1151
1152     return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR;
1153 }
1154
1155 static HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly)
1156 {
1157     BaseInputPin *This = impl_from_IMemInputPin(iface);
1158
1159     TRACE("(%p/%p)->(%p, %d)\n", This, iface, pAllocator, bReadOnly);
1160
1161     if (bReadOnly)
1162         FIXME("Read only flag not handled yet!\n");
1163
1164     /* FIXME: Should we release the allocator on disconnection? */
1165     if (!pAllocator)
1166     {
1167         WARN("Null allocator\n");
1168         return E_POINTER;
1169     }
1170
1171     if (This->preferred_allocator && pAllocator != This->preferred_allocator)
1172         return E_FAIL;
1173
1174     if (This->pAllocator)
1175         IMemAllocator_Release(This->pAllocator);
1176     This->pAllocator = pAllocator;
1177     if (This->pAllocator)
1178         IMemAllocator_AddRef(This->pAllocator);
1179
1180     return S_OK;
1181 }
1182
1183 static HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps)
1184 {
1185     BaseInputPin *This = impl_from_IMemInputPin(iface);
1186
1187     TRACE("(%p/%p)->(%p)\n", This, iface, pProps);
1188
1189     /* override this method if you have any specific requirements */
1190
1191     return E_NOTIMPL;
1192 }
1193
1194 static HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample)
1195 {
1196     BaseInputPin *This = impl_from_IMemInputPin(iface);
1197     HRESULT hr = S_FALSE;
1198
1199     /* this trace commented out for performance reasons */
1200     /*TRACE("(%p/%p)->(%p)\n", This, iface, pSample);*/
1201     if (This->pFuncsTable->pfnReceive)
1202         hr = This->pFuncsTable->pfnReceive(This, pSample);
1203     return hr;
1204 }
1205
1206 static HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, LONG nSamples, LONG *nSamplesProcessed)
1207 {
1208     HRESULT hr = S_OK;
1209     BaseInputPin *This = impl_from_IMemInputPin(iface);
1210
1211     TRACE("(%p/%p)->(%p, %d, %p)\n", This, iface, pSamples, nSamples, nSamplesProcessed);
1212
1213     for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++)
1214     {
1215         hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]);
1216         if (hr != S_OK)
1217             break;
1218     }
1219
1220     return hr;
1221 }
1222
1223 static HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface)
1224 {
1225     BaseInputPin *This = impl_from_IMemInputPin(iface);
1226
1227     TRACE("(%p/%p)->()\n", This, iface);
1228
1229     return S_OK;
1230 }
1231
1232 static const IMemInputPinVtbl MemInputPin_Vtbl =
1233 {
1234     MemInputPin_QueryInterface,
1235     MemInputPin_AddRef,
1236     MemInputPin_Release,
1237     MemInputPin_GetAllocator,
1238     MemInputPin_NotifyAllocator,
1239     MemInputPin_GetAllocatorRequirements,
1240     MemInputPin_Receive,
1241     MemInputPin_ReceiveMultiple,
1242     MemInputPin_ReceiveCanBlock
1243 };
1244
1245 static HRESULT InputPin_Init(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1246                              const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1247                              LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, BaseInputPin * pPinImpl)
1248 {
1249     TRACE("\n");
1250
1251     /* Common attributes */
1252     pPinImpl->pin.refCount = 1;
1253     pPinImpl->pin.pConnectedTo = NULL;
1254     pPinImpl->pin.pCritSec = pCritSec;
1255     pPinImpl->pin.tStart = 0;
1256     pPinImpl->pin.tStop = 0;
1257     pPinImpl->pin.dRate = 1.0;
1258     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1259     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
1260     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
1261
1262     /* Input pin attributes */
1263     pPinImpl->pFuncsTable = pBaseInputFuncsTable;
1264     pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator;
1265     if (pPinImpl->preferred_allocator)
1266         IMemAllocator_AddRef(pPinImpl->preferred_allocator);
1267     pPinImpl->pin.IPin_iface.lpVtbl = InputPin_Vtbl;
1268     pPinImpl->IMemInputPin_iface.lpVtbl = &MemInputPin_Vtbl;
1269     pPinImpl->flushing = pPinImpl->end_of_stream = 0;
1270
1271     return S_OK;
1272 }
1273
1274 HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1275                                const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1276                                LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, IPin ** ppPin)
1277 {
1278     BaseInputPin * pPinImpl;
1279
1280     *ppPin = NULL;
1281
1282     assert(pBaseFuncsTable->pfnCheckMediaType);
1283
1284     if (pPinInfo->dir != PINDIR_INPUT)
1285     {
1286         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
1287         return E_INVALIDARG;
1288     }
1289
1290     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
1291
1292     if (!pPinImpl)
1293         return E_OUTOFMEMORY;
1294
1295     if (SUCCEEDED(InputPin_Init(InputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseInputFuncsTable, pCritSec, allocator, pPinImpl)))
1296     {
1297         *ppPin = (IPin *)pPinImpl;
1298         return S_OK;
1299     }
1300
1301     CoTaskMemFree(pPinImpl);
1302     return E_FAIL;
1303 }