dlls/strmbase/pin.c

   1 /*
   2  * Generic Implementation of IPin Interface
   3  *
   4  * Copyright 2003 Robert Shearman
   5  * Copyright 2010 Aric Stewart, CodeWeavers
   6  *
   7  * This library is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU Lesser General Public
   9  * License as published by the Free Software Foundation; either
  10  * version 2.1 of the License, or (at your option) any later version.
  11  *
  12  * This library is distributed in the hope that it will be useful,
  13  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  14  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  15  * Lesser General Public License for more details.
  16  *
  17  * You should have received a copy of the GNU Lesser General Public
  18  * License along with this library; if not, write to the Free Software
  19  * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301, USA
  20  */
  21
  22 #define COBJMACROS
  23
  24 #include "dshow.h"
  25 #include "wine/debug.h"
  26 #include "wine/unicode.h"
  27 #include "wine/strmbase.h"
  28 #include "uuids.h"
  29 #include "vfwmsgs.h"
  30 #include <assert.h>
  31
  32 WINE_DEFAULT_DEBUG_CHANNEL(strmbase);
  33
  34 static const IPinVtbl InputPin_Vtbl;
  35 static const IPinVtbl OutputPin_Vtbl;
  36 static const IMemInputPinVtbl MemInputPin_Vtbl;
  37
  38 typedef HRESULT (*SendPinFunc)( IPin *to, LPVOID arg );
  39
  40 /** Helper function, there are a lot of places where the error code is inherited
  41  * The following rules apply:
  42  *
  43  * Return the first received error code (E_NOTIMPL is ignored)
  44  * If no errors occur: return the first received non-error-code that isn't S_OK
  45  */
  46 static HRESULT updatehres( HRESULT original, HRESULT new )
  47 {
  48     if (FAILED( original ) || new == E_NOTIMPL)
  49         return original;
  50
  51     if (FAILED( new ) || original == S_OK)
  52         return new;
  53
  54     return original;
  55 }
  56
  57 /** Sends a message from a pin further to other, similar pins
  58  * fnMiddle is called on each pin found further on the stream.
  59  * fnEnd (can be NULL) is called when the message can't be sent any further (this is a renderer or source)
  60  *
  61  * If the pin given is an input pin, the message will be sent downstream to other input pins
  62  * If the pin given is an output pin, the message will be sent upstream to other output pins
  63  */
  64 static HRESULT SendFurther( IPin *from, SendPinFunc fnMiddle, LPVOID arg, SendPinFunc fnEnd )
  65 {
  66     PIN_INFO pin_info;
  67     ULONG amount = 0;
  68     HRESULT hr = S_OK;
  69     HRESULT hr_return = S_OK;
  70     IEnumPins *enumpins = NULL;
  71     BOOL foundend = TRUE;
  72     PIN_DIRECTION from_dir;
  73
  74     IPin_QueryDirection( from, &from_dir );
  75
  76     hr = IPin_QueryInternalConnections( from, NULL, &amount );
  77     if (hr != E_NOTIMPL && amount)
  78         FIXME("Use QueryInternalConnections!\n");
  79      hr = S_OK;
  80
  81     pin_info.pFilter = NULL;
  82     hr = IPin_QueryPinInfo( from, &pin_info );
  83     if (FAILED(hr))
  84         goto out;
  85
  86     hr = IBaseFilter_EnumPins( pin_info.pFilter, &enumpins );
  87     if (FAILED(hr))
  88         goto out;
  89
  90     hr = IEnumPins_Reset( enumpins );
  91     while (hr == S_OK) {
  92         IPin *pin = NULL;
  93         hr = IEnumPins_Next( enumpins, 1, &pin, NULL );
  94         if (hr == VFW_E_ENUM_OUT_OF_SYNC)
  95         {
  96             hr = IEnumPins_Reset( enumpins );
  97             continue;
  98         }
  99         if (pin)
 100         {
 101             PIN_DIRECTION dir;
 102
 103             IPin_QueryDirection( pin, &dir );
 104             if (dir != from_dir)
 105             {
 106                 IPin *connected = NULL;
 107
 108                 foundend = FALSE;
 109                 IPin_ConnectedTo( pin, &connected );
 110                 if (connected)
 111                 {
 112                     HRESULT hr_local;
 113
 114                     hr_local = fnMiddle( connected, arg );
 115                     hr_return = updatehres( hr_return, hr_local );
 116                     IPin_Release(connected);
 117                 }
 118             }
 119             IPin_Release( pin );
 120         }
 121         else
 122         {
 123             hr = S_OK;
 124             break;
 125         }
 126     }
 127
 128     if (!foundend)
 129         hr = hr_return;
 130     else if (fnEnd) {
 131         HRESULT hr_local;
 132
 133         hr_local = fnEnd( from, arg );
 134         hr_return = updatehres( hr_return, hr_local );
 135     }
 136
 137 out:
 138     if (pin_info.pFilter)
 139         IBaseFilter_Release( pin_info.pFilter );
 140     return hr;
 141 }
 142
 143 static void Copy_PinInfo(PIN_INFO * pDest, const PIN_INFO * pSrc)
 144 {
 145     /* Tempting to just do a memcpy, but the name field is
 146        128 characters long! We will probably never exceed 10
 147        most of the time, so we are better off copying
 148        each field manually */
 149     strcpyW(pDest->achName, pSrc->achName);
 150     pDest->dir = pSrc->dir;
 151     pDest->pFilter = pSrc->pFilter;
 152 }
 153
 154 static void dump_AM_MEDIA_TYPE(const AM_MEDIA_TYPE * pmt)
 155 {
 156     if (!pmt)
 157         return;
 158     TRACE("\t%s\n\t%s\n\t...\n\t%s\n", debugstr_guid(&pmt->majortype), debugstr_guid(&pmt->subtype), debugstr_guid(&pmt->formattype));
 159 }
 160
 161 static BOOL CompareMediaTypes(const AM_MEDIA_TYPE * pmt1, const AM_MEDIA_TYPE * pmt2, BOOL bWildcards)
 162 {
 163     TRACE("pmt1: ");
 164     dump_AM_MEDIA_TYPE(pmt1);
 165     TRACE("pmt2: ");
 166     dump_AM_MEDIA_TYPE(pmt2);
 167     return (((bWildcards && (IsEqualGUID(&pmt1->majortype, &GUID_NULL) || IsEqualGUID(&pmt2->majortype, &GUID_NULL))) || IsEqualGUID(&pmt1->majortype, &pmt2->majortype)) &&
 168             ((bWildcards && (IsEqualGUID(&pmt1->subtype, &GUID_NULL)   || IsEqualGUID(&pmt2->subtype, &GUID_NULL)))   || IsEqualGUID(&pmt1->subtype, &pmt2->subtype)));
 169 }
 170
 171 /*** Common Base Pin function */
 172 HRESULT WINAPI BasePinImpl_GetMediaType(BasePin *iface, int iPosition, AM_MEDIA_TYPE *pmt)
 173 {
 174     if (iPosition < 0)
 175         return E_INVALIDARG;
 176     return VFW_S_NO_MORE_ITEMS;
 177 }
 178
 179 LONG WINAPI BasePinImpl_GetMediaTypeVersion(BasePin *iface)
 180 {
 181     return 1;
 182 }
 183
 184 ULONG WINAPI BasePinImpl_AddRef(IPin * iface)
 185 {
 186     BasePin *This = (BasePin *)iface;
 187     ULONG refCount = InterlockedIncrement(&This->refCount);
 188
 189     TRACE("(%p)->() AddRef from %d\n", iface, refCount - 1);
 190
 191     return refCount;
 192 }
 193
 194 HRESULT WINAPI BasePinImpl_Disconnect(IPin * iface)
 195 {
 196     HRESULT hr;
 197     BasePin *This = (BasePin *)iface;
 198
 199     TRACE("()\n");
 200
 201     EnterCriticalSection(This->pCritSec);
 202     {
 203         if (This->pConnectedTo)
 204         {
 205             IPin_Release(This->pConnectedTo);
 206             This->pConnectedTo = NULL;
 207             FreeMediaType(&This->mtCurrent);
 208             ZeroMemory(&This->mtCurrent, sizeof(This->mtCurrent));
 209             hr = S_OK;
 210         }
 211         else
 212             hr = S_FALSE;
 213     }
 214     LeaveCriticalSection(This->pCritSec);
 215
 216     return hr;
 217 }
 218
 219 HRESULT WINAPI BasePinImpl_ConnectedTo(IPin * iface, IPin ** ppPin)
 220 {
 221     HRESULT hr;
 222     BasePin *This = (BasePin *)iface;
 223
 224     TRACE("(%p)\n", ppPin);
 225
 226     EnterCriticalSection(This->pCritSec);
 227     {
 228         if (This->pConnectedTo)
 229         {
 230             *ppPin = This->pConnectedTo;
 231             IPin_AddRef(*ppPin);
 232             hr = S_OK;
 233         }
 234         else
 235         {
 236             hr = VFW_E_NOT_CONNECTED;
 237             *ppPin = NULL;
 238         }
 239     }
 240     LeaveCriticalSection(This->pCritSec);
 241
 242     return hr;
 243 }
 244
 245 HRESULT WINAPI BasePinImpl_ConnectionMediaType(IPin * iface, AM_MEDIA_TYPE * pmt)
 246 {
 247     HRESULT hr;
 248     BasePin *This = (BasePin *)iface;
 249
 250     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 251
 252     EnterCriticalSection(This->pCritSec);
 253     {
 254         if (This->pConnectedTo)
 255         {
 256             CopyMediaType(pmt, &This->mtCurrent);
 257             hr = S_OK;
 258         }
 259         else
 260         {
 261             ZeroMemory(pmt, sizeof(*pmt));
 262             hr = VFW_E_NOT_CONNECTED;
 263         }
 264     }
 265     LeaveCriticalSection(This->pCritSec);
 266
 267     return hr;
 268 }
 269
 270 HRESULT WINAPI BasePinImpl_QueryPinInfo(IPin * iface, PIN_INFO * pInfo)
 271 {
 272     BasePin *This = (BasePin *)iface;
 273
 274     TRACE("(%p/%p)->(%p)\n", This, iface, pInfo);
 275
 276     Copy_PinInfo(pInfo, &This->pinInfo);
 277     IBaseFilter_AddRef(pInfo->pFilter);
 278
 279     return S_OK;
 280 }
 281
 282 HRESULT WINAPI BasePinImpl_QueryDirection(IPin * iface, PIN_DIRECTION * pPinDir)
 283 {
 284     BasePin *This = (BasePin *)iface;
 285
 286     TRACE("(%p/%p)->(%p)\n", This, iface, pPinDir);
 287
 288     *pPinDir = This->pinInfo.dir;
 289
 290     return S_OK;
 291 }
 292
 293 HRESULT WINAPI BasePinImpl_QueryId(IPin * iface, LPWSTR * Id)
 294 {
 295     BasePin *This = (BasePin *)iface;
 296
 297     TRACE("(%p/%p)->(%p)\n", This, iface, Id);
 298
 299     *Id = CoTaskMemAlloc((strlenW(This->pinInfo.achName) + 1) * sizeof(WCHAR));
 300     if (!*Id)
 301         return E_OUTOFMEMORY;
 302
 303     strcpyW(*Id, This->pinInfo.achName);
 304
 305     return S_OK;
 306 }
 307
 308 HRESULT WINAPI BasePinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 309 {
 310     TRACE("(%p)->(%p)\n", iface, pmt);
 311
 312     return S_OK;
 313 }
 314
 315 HRESULT WINAPI BasePinImpl_EnumMediaTypes(IPin * iface, IEnumMediaTypes ** ppEnum)
 316 {
 317     BasePin *This = (BasePin *)iface;
 318
 319     TRACE("(%p/%p)->(%p)\n", This, iface, ppEnum);
 320
 321     /* override this method to allow enumeration of your types */
 322
 323     return EnumMediaTypes_Construct(This, This->pFuncsTable->pfnGetMediaType, This->pFuncsTable->pfnGetMediaTypeVersion , ppEnum);
 324 }
 325
 326 HRESULT WINAPI BasePinImpl_QueryInternalConnections(IPin * iface, IPin ** apPin, ULONG * cPin)
 327 {
 328     BasePin *This = (BasePin *)iface;
 329
 330     TRACE("(%p/%p)->(%p, %p)\n", This, iface, apPin, cPin);
 331
 332     return E_NOTIMPL; /* to tell caller that all input pins connected to all output pins */
 333 }
 334
 335 HRESULT WINAPI BasePinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
 336 {
 337     BasePin *This = (BasePin *)iface;
 338
 339     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
 340
 341     This->tStart = tStart;
 342     This->tStop = tStop;
 343     This->dRate = dRate;
 344
 345     return S_OK;
 346 }
 347
 348 /*** OutputPin implementation ***/
 349
 350 HRESULT WINAPI BaseOutputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 351 {
 352     BaseOutputPin *This = (BaseOutputPin *)iface;
 353
 354     TRACE("(%p/%p)->(%s, %p)\n", This, iface, debugstr_guid(riid), ppv);
 355
 356     *ppv = NULL;
 357
 358     if (IsEqualIID(riid, &IID_IUnknown))
 359         *ppv = iface;
 360     else if (IsEqualIID(riid, &IID_IPin))
 361         *ppv = iface;
 362     else if (IsEqualIID(riid, &IID_IMediaSeeking) ||
 363              IsEqualIID(riid, &IID_IQualityControl))
 364     {
 365         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, riid, ppv);
 366     }
 367
 368     if (*ppv)
 369     {
 370         IUnknown_AddRef((IUnknown *)(*ppv));
 371         return S_OK;
 372     }
 373
 374     FIXME("No interface for %s!\n", debugstr_guid(riid));
 375
 376     return E_NOINTERFACE;
 377 }
 378
 379 ULONG WINAPI BaseOutputPinImpl_Release(IPin * iface)
 380 {
 381     BaseOutputPin *This = (BaseOutputPin *)iface;
 382     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 383
 384     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 385
 386     if (!refCount)
 387     {
 388         FreeMediaType(&This->pin.mtCurrent);
 389         CoTaskMemFree(This);
 390         return 0;
 391     }
 392     return refCount;
 393 }
 394
 395 HRESULT WINAPI BaseOutputPinImpl_Connect(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 396 {
 397     HRESULT hr;
 398     BaseOutputPin *This = (BaseOutputPin *)iface;
 399
 400     TRACE("(%p/%p)->(%p, %p)\n", This, iface, pReceivePin, pmt);
 401     dump_AM_MEDIA_TYPE(pmt);
 402
 403     /* If we try to connect to ourself, we will definitely deadlock.
 404      * There are other cases where we could deadlock too, but this
 405      * catches the obvious case */
 406     assert(pReceivePin != iface);
 407
 408     EnterCriticalSection(This->pin.pCritSec);
 409     {
 410         /* if we have been a specific type to connect with, then we can either connect
 411          * with that or fail. We cannot choose different AM_MEDIA_TYPE */
 412         if (pmt && !IsEqualGUID(&pmt->majortype, &GUID_NULL) && !IsEqualGUID(&pmt->subtype, &GUID_NULL))
 413             hr = This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmt);
 414         else
 415         {
 416             /* negotiate media type */
 417
 418             IEnumMediaTypes * pEnumCandidates;
 419             AM_MEDIA_TYPE * pmtCandidate = NULL; /* Candidate media type */
 420
 421             if (SUCCEEDED(hr = IPin_EnumMediaTypes(iface, &pEnumCandidates)))
 422             {
 423                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 424
 425                 /* try this filter's media types first */
 426                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 427                 {
 428                     assert(pmtCandidate);
 429                     dump_AM_MEDIA_TYPE(pmtCandidate);
 430                     if (!IsEqualGUID(&FORMAT_None, &pmtCandidate->formattype)
 431                         && !IsEqualGUID(&GUID_NULL, &pmtCandidate->formattype))
 432                         assert(pmtCandidate->pbFormat);
 433                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 434                         (This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmtCandidate) == S_OK))
 435                     {
 436                         hr = S_OK;
 437                         DeleteMediaType(pmtCandidate);
 438                         break;
 439                     }
 440                     DeleteMediaType(pmtCandidate);
 441                     pmtCandidate = NULL;
 442                 }
 443                 IEnumMediaTypes_Release(pEnumCandidates);
 444             }
 445
 446             /* then try receiver filter's media types */
 447             if (hr != S_OK && SUCCEEDED(hr = IPin_EnumMediaTypes(pReceivePin, &pEnumCandidates))) /* if we haven't already connected successfully */
 448             {
 449                 hr = VFW_E_NO_ACCEPTABLE_TYPES; /* Assume the worst, but set to S_OK if connected successfully */
 450
 451                 while (S_OK == IEnumMediaTypes_Next(pEnumCandidates, 1, &pmtCandidate, NULL))
 452                 {
 453                     assert(pmtCandidate);
 454                     dump_AM_MEDIA_TYPE(pmtCandidate);
 455                     if (( !pmt || CompareMediaTypes(pmt, pmtCandidate, TRUE) ) &&
 456                         (This->pin.pFuncsTable->pfnAttemptConnection((BasePin*)This, pReceivePin, pmtCandidate) == S_OK))
 457                     {
 458                         hr = S_OK;
 459                         DeleteMediaType(pmtCandidate);
 460                         break;
 461                     }
 462                     DeleteMediaType(pmtCandidate);
 463                     pmtCandidate = NULL;
 464                 } /* while */
 465                 IEnumMediaTypes_Release(pEnumCandidates);
 466             } /* if not found */
 467         } /* if negotiate media type */
 468     } /* if succeeded */
 469     LeaveCriticalSection(This->pin.pCritSec);
 470
 471     TRACE(" -- %x\n", hr);
 472     return hr;
 473 }
 474
 475 HRESULT WINAPI BaseOutputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 476 {
 477     ERR("Incoming connection on an output pin! (%p, %p)\n", pReceivePin, pmt);
 478
 479     return E_UNEXPECTED;
 480 }
 481
 482 HRESULT WINAPI BaseOutputPinImpl_Disconnect(IPin * iface)
 483 {
 484     HRESULT hr;
 485     BaseOutputPin *This = (BaseOutputPin *)iface;
 486
 487     TRACE("()\n");
 488
 489     EnterCriticalSection(This->pin.pCritSec);
 490     {
 491         if (This->pMemInputPin)
 492         {
 493             IMemInputPin_Release(This->pMemInputPin);
 494             This->pMemInputPin = NULL;
 495         }
 496         if (This->pin.pConnectedTo)
 497         {
 498             IPin_Release(This->pin.pConnectedTo);
 499             This->pin.pConnectedTo = NULL;
 500             FreeMediaType(&This->pin.mtCurrent);
 501             ZeroMemory(&This->pin.mtCurrent, sizeof(This->pin.mtCurrent));
 502             hr = S_OK;
 503         }
 504         else
 505             hr = S_FALSE;
 506     }
 507     LeaveCriticalSection(This->pin.pCritSec);
 508
 509     return hr;
 510 }
 511
 512 HRESULT WINAPI BaseOutputPinImpl_EndOfStream(IPin * iface)
 513 {
 514     TRACE("()\n");
 515
 516     /* not supposed to do anything in an output pin */
 517
 518     return E_UNEXPECTED;
 519 }
 520
 521 HRESULT WINAPI BaseOutputPinImpl_BeginFlush(IPin * iface)
 522 {
 523     TRACE("(%p)->()\n", iface);
 524
 525     /* not supposed to do anything in an output pin */
 526
 527     return E_UNEXPECTED;
 528 }
 529
 530 HRESULT WINAPI BaseOutputPinImpl_EndFlush(IPin * iface)
 531 {
 532     TRACE("(%p)->()\n", iface);
 533
 534     /* not supposed to do anything in an output pin */
 535
 536     return E_UNEXPECTED;
 537 }
 538
 539 static const IPinVtbl OutputPin_Vtbl =
 540 {
 541     BaseOutputPinImpl_QueryInterface,
 542     BasePinImpl_AddRef,
 543     BaseOutputPinImpl_Release,
 544     BaseOutputPinImpl_Connect,
 545     BaseOutputPinImpl_ReceiveConnection,
 546     BaseOutputPinImpl_Disconnect,
 547     BasePinImpl_ConnectedTo,
 548     BasePinImpl_ConnectionMediaType,
 549     BasePinImpl_QueryPinInfo,
 550     BasePinImpl_QueryDirection,
 551     BasePinImpl_QueryId,
 552     BasePinImpl_QueryAccept,
 553     BasePinImpl_EnumMediaTypes,
 554     BasePinImpl_QueryInternalConnections,
 555     BaseOutputPinImpl_EndOfStream,
 556     BaseOutputPinImpl_BeginFlush,
 557     BaseOutputPinImpl_EndFlush,
 558     BasePinImpl_NewSegment
 559 };
 560
 561 HRESULT WINAPI BaseOutputPinImpl_GetDeliveryBuffer(BaseOutputPin *This, IMediaSample ** ppSample, REFERENCE_TIME * tStart, REFERENCE_TIME * tStop, DWORD dwFlags)
 562 {
 563     HRESULT hr;
 564
 565     TRACE("(%p, %p, %p, %x)\n", ppSample, tStart, tStop, dwFlags);
 566
 567     EnterCriticalSection(This->pin.pCritSec);
 568     {
 569         if (!This->pin.pConnectedTo)
 570             hr = VFW_E_NOT_CONNECTED;
 571         else
 572         {
 573             IMemAllocator * pAlloc = NULL;
 574
 575             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 576
 577             if (SUCCEEDED(hr))
 578                 hr = IMemAllocator_GetBuffer(pAlloc, ppSample, tStart, tStop, dwFlags);
 579
 580             if (SUCCEEDED(hr))
 581                 hr = IMediaSample_SetTime(*ppSample, tStart, tStop);
 582
 583             if (pAlloc)
 584                 IMemAllocator_Release(pAlloc);
 585         }
 586     }
 587     LeaveCriticalSection(This->pin.pCritSec);
 588
 589     return hr;
 590 }
 591
 592 /* replaces OutputPin_SendSample */
 593 HRESULT WINAPI BaseOutputPinImpl_Deliver(BaseOutputPin *This, IMediaSample * pSample)
 594 {
 595     HRESULT hr = S_OK;
 596     IMemInputPin * pMemConnected = NULL;
 597     PIN_INFO pinInfo;
 598
 599     EnterCriticalSection(This->pin.pCritSec);
 600     {
 601         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 602             hr = VFW_E_NOT_CONNECTED;
 603         else
 604         {
 605             /* we don't have the lock held when using This->pMemInputPin,
 606              * so we need to AddRef it to stop it being deleted while we are
 607              * using it. Same with its filter. */
 608             pMemConnected = This->pMemInputPin;
 609             IMemInputPin_AddRef(pMemConnected);
 610             hr = IPin_QueryPinInfo(This->pin.pConnectedTo, &pinInfo);
 611         }
 612     }
 613     LeaveCriticalSection(This->pin.pCritSec);
 614
 615     if (SUCCEEDED(hr))
 616     {
 617         /* NOTE: if we are in a critical section when Receive is called
 618          * then it causes some problems (most notably with the native Video
 619          * Renderer) if we are re-entered for whatever reason */
 620         hr = IMemInputPin_Receive(pMemConnected, pSample);
 621
 622         /* If the filter's destroyed, tell upstream to stop sending data */
 623         if(IBaseFilter_Release(pinInfo.pFilter) == 0 && SUCCEEDED(hr))
 624             hr = S_FALSE;
 625     }
 626     if (pMemConnected)
 627         IMemInputPin_Release(pMemConnected);
 628
 629     return hr;
 630 }
 631
 632 /* replaces OutputPin_CommitAllocator */
 633 HRESULT WINAPI BaseOutputPinImpl_Active(BaseOutputPin *This)
 634 {
 635     HRESULT hr = S_OK;
 636
 637     TRACE("(%p)->()\n", This);
 638
 639     EnterCriticalSection(This->pin.pCritSec);
 640     {
 641         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 642             hr = VFW_E_NOT_CONNECTED;
 643         else
 644         {
 645             IMemAllocator * pAlloc = NULL;
 646
 647             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 648
 649             if (SUCCEEDED(hr))
 650                 hr = IMemAllocator_Commit(pAlloc);
 651
 652             if (pAlloc)
 653                 IMemAllocator_Release(pAlloc);
 654         }
 655     }
 656     LeaveCriticalSection(This->pin.pCritSec);
 657
 658     TRACE("--> %08x\n", hr);
 659     return hr;
 660 }
 661
 662 /* replaces OutputPin_DecommitAllocator */
 663 HRESULT WINAPI BaseOutputPinImpl_Inactive(BaseOutputPin *This)
 664 {
 665     HRESULT hr = S_OK;
 666
 667     TRACE("(%p)->()\n", This);
 668
 669     EnterCriticalSection(This->pin.pCritSec);
 670     {
 671         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 672             hr = VFW_E_NOT_CONNECTED;
 673         else
 674         {
 675             IMemAllocator * pAlloc = NULL;
 676
 677             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 678
 679             if (SUCCEEDED(hr))
 680                 hr = IMemAllocator_Decommit(pAlloc);
 681
 682             if (pAlloc)
 683                 IMemAllocator_Release(pAlloc);
 684         }
 685     }
 686     LeaveCriticalSection(This->pin.pCritSec);
 687
 688     TRACE("--> %08x\n", hr);
 689     return hr;
 690 }
 691
 692 /* replaces OutputPin_DeliverDisconnect */
 693 HRESULT WINAPI BaseOutputPinImpl_BreakConnect(BaseOutputPin *This)
 694 {
 695     HRESULT hr;
 696
 697     TRACE("(%p)->()\n", This);
 698
 699     EnterCriticalSection(This->pin.pCritSec);
 700     {
 701         if (!This->pin.pConnectedTo || !This->pMemInputPin)
 702             hr = VFW_E_NOT_CONNECTED;
 703         else
 704         {
 705             IMemAllocator * pAlloc = NULL;
 706
 707             hr = IMemInputPin_GetAllocator(This->pMemInputPin, &pAlloc);
 708
 709             if (SUCCEEDED(hr))
 710                 hr = IMemAllocator_Decommit(pAlloc);
 711
 712             if (pAlloc)
 713                 IMemAllocator_Release(pAlloc);
 714
 715             if (SUCCEEDED(hr))
 716                 hr = IPin_Disconnect(This->pin.pConnectedTo);
 717         }
 718         IPin_Disconnect((IPin *)This);
 719     }
 720     LeaveCriticalSection(This->pin.pCritSec);
 721
 722     return hr;
 723 }
 724
 725 HRESULT WINAPI BaseOutputPinImpl_InitAllocator(BaseOutputPin *This, IMemAllocator **pMemAlloc)
 726 {
 727     return CoCreateInstance(&CLSID_MemoryAllocator, NULL, CLSCTX_INPROC_SERVER, &IID_IMemAllocator, (LPVOID*)pMemAlloc);
 728 }
 729
 730 HRESULT WINAPI BaseOutputPinImpl_DecideAllocator(BaseOutputPin *This, IMemInputPin *pPin, IMemAllocator **pAlloc)
 731 {
 732     HRESULT hr;
 733
 734     hr = IMemInputPin_GetAllocator(pPin, pAlloc);
 735
 736     if (hr == VFW_E_NO_ALLOCATOR)
 737         /* Input pin provides no allocator, use standard memory allocator */
 738         hr = BaseOutputPinImpl_InitAllocator(This, pAlloc);
 739
 740     if (SUCCEEDED(hr))
 741     {
 742         ALLOCATOR_PROPERTIES rProps;
 743         ZeroMemory(&rProps, sizeof(ALLOCATOR_PROPERTIES));
 744
 745         IMemInputPin_GetAllocatorRequirements(pPin, &rProps);
 746         hr = This->pFuncsTable->pfnDecideBufferSize(This, *pAlloc, &rProps);
 747     }
 748
 749     if (SUCCEEDED(hr))
 750         hr = IMemInputPin_NotifyAllocator(pPin, *pAlloc, FALSE);
 751
 752     return hr;
 753 }
 754
 755 /*** The Construct functions ***/
 756
 757 /* Function called as a helper to IPin_Connect */
 758 /* specific AM_MEDIA_TYPE - it cannot be NULL */
 759 HRESULT WINAPI BaseOutputPinImpl_AttemptConnection(BasePin* iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 760 {
 761     BaseOutputPin *This = (BaseOutputPin *)iface;
 762     HRESULT hr;
 763     IMemAllocator * pMemAlloc = NULL;
 764
 765     TRACE("(%p, %p)\n", pReceivePin, pmt);
 766     dump_AM_MEDIA_TYPE(pmt);
 767
 768     /* FIXME: call queryacceptproc */
 769
 770     This->pin.pConnectedTo = pReceivePin;
 771     IPin_AddRef(pReceivePin);
 772     CopyMediaType(&This->pin.mtCurrent, pmt);
 773
 774     hr = IPin_ReceiveConnection(pReceivePin, (IPin*)iface, pmt);
 775
 776     /* get the IMemInputPin interface we will use to deliver samples to the
 777      * connected pin */
 778     if (SUCCEEDED(hr))
 779     {
 780         This->pMemInputPin = NULL;
 781         hr = IPin_QueryInterface(pReceivePin, &IID_IMemInputPin, (LPVOID)&This->pMemInputPin);
 782
 783         if (SUCCEEDED(hr))
 784         {
 785             hr = This->pFuncsTable->pfnDecideAllocator(This, This->pMemInputPin, &pMemAlloc);
 786             if (pMemAlloc)
 787                 IMemAllocator_Release(pMemAlloc);
 788         }
 789
 790         /* break connection if we couldn't get the allocator */
 791         if (FAILED(hr))
 792         {
 793             if (This->pMemInputPin)
 794                 IMemInputPin_Release(This->pMemInputPin);
 795             This->pMemInputPin = NULL;
 796
 797             IPin_Disconnect(pReceivePin);
 798         }
 799     }
 800
 801     if (FAILED(hr))
 802     {
 803         IPin_Release(This->pin.pConnectedTo);
 804         This->pin.pConnectedTo = NULL;
 805         FreeMediaType(&This->pin.mtCurrent);
 806     }
 807
 808     TRACE(" -- %x\n", hr);
 809     return hr;
 810 }
 811
 812 static HRESULT OutputPin_Init(const IPinVtbl *OutputPin_Vtbl, const PIN_INFO * pPinInfo, const BasePinFuncTable* pBaseFuncsTable, const BaseOutputPinFuncTable* pBaseOutputFuncsTable,  LPCRITICAL_SECTION pCritSec, BaseOutputPin * pPinImpl)
 813 {
 814     TRACE("\n");
 815
 816     /* Common attributes */
 817     pPinImpl->pin.lpVtbl = OutputPin_Vtbl;
 818     pPinImpl->pin.refCount = 1;
 819     pPinImpl->pin.pConnectedTo = NULL;
 820     pPinImpl->pin.pCritSec = pCritSec;
 821     pPinImpl->pin.tStart = 0;
 822     pPinImpl->pin.tStop = 0;
 823     pPinImpl->pin.dRate = 1.0;
 824     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
 825     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
 826     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
 827
 828     /* Output pin attributes */
 829     pPinImpl->pMemInputPin = NULL;
 830     pPinImpl->pFuncsTable = pBaseOutputFuncsTable;
 831
 832     return S_OK;
 833 }
 834
 835 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)
 836 {
 837     BaseOutputPin * pPinImpl;
 838
 839     *ppPin = NULL;
 840
 841     if (pPinInfo->dir != PINDIR_OUTPUT)
 842     {
 843         ERR("Pin direction(%x) != PINDIR_OUTPUT\n", pPinInfo->dir);
 844         return E_INVALIDARG;
 845     }
 846
 847     assert(outputpin_size >= sizeof(BaseOutputPin));
 848     assert(pBaseFuncsTable->pfnAttemptConnection);
 849
 850     pPinImpl = CoTaskMemAlloc(outputpin_size);
 851
 852     if (!pPinImpl)
 853         return E_OUTOFMEMORY;
 854
 855     if (SUCCEEDED(OutputPin_Init(OutputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseOutputFuncsTable, pCritSec, pPinImpl)))
 856     {
 857         *ppPin = (IPin *)(&pPinImpl->pin.lpVtbl);
 858         return S_OK;
 859     }
 860
 861     CoTaskMemFree(pPinImpl);
 862     return E_FAIL;
 863 }
 864
 865 /*** Input Pin implementation ***/
 866
 867 HRESULT WINAPI BaseInputPinImpl_QueryInterface(IPin * iface, REFIID riid, LPVOID * ppv)
 868 {
 869     BaseInputPin *This = (BaseInputPin *)iface;
 870
 871     TRACE("(%p)->(%s, %p)\n", iface, debugstr_guid(riid), ppv);
 872
 873     *ppv = NULL;
 874
 875     if (IsEqualIID(riid, &IID_IUnknown))
 876         *ppv = iface;
 877     else if (IsEqualIID(riid, &IID_IPin))
 878         *ppv = iface;
 879     else if (IsEqualIID(riid, &IID_IMemInputPin))
 880         *ppv = &This->lpVtblMemInput;
 881     else if (IsEqualIID(riid, &IID_IMediaSeeking))
 882     {
 883         return IBaseFilter_QueryInterface(This->pin.pinInfo.pFilter, &IID_IMediaSeeking, ppv);
 884     }
 885
 886     if (*ppv)
 887     {
 888         IUnknown_AddRef((IUnknown *)(*ppv));
 889         return S_OK;
 890     }
 891
 892     FIXME("No interface for %s!\n", debugstr_guid(riid));
 893
 894     return E_NOINTERFACE;
 895 }
 896
 897 ULONG WINAPI BaseInputPinImpl_Release(IPin * iface)
 898 {
 899     BaseInputPin *This = (BaseInputPin *)iface;
 900     ULONG refCount = InterlockedDecrement(&This->pin.refCount);
 901
 902     TRACE("(%p)->() Release from %d\n", iface, refCount + 1);
 903
 904     if (!refCount)
 905     {
 906         FreeMediaType(&This->pin.mtCurrent);
 907         if (This->pAllocator)
 908             IMemAllocator_Release(This->pAllocator);
 909         This->pAllocator = NULL;
 910         This->pin.lpVtbl = NULL;
 911         CoTaskMemFree(This);
 912         return 0;
 913     }
 914     else
 915         return refCount;
 916 }
 917
 918 HRESULT WINAPI BaseInputPinImpl_Connect(IPin * iface, IPin * pConnector, const AM_MEDIA_TYPE * pmt)
 919 {
 920     ERR("Outgoing connection on an input pin! (%p, %p)\n", pConnector, pmt);
 921
 922     return E_UNEXPECTED;
 923 }
 924
 925
 926 HRESULT WINAPI BaseInputPinImpl_ReceiveConnection(IPin * iface, IPin * pReceivePin, const AM_MEDIA_TYPE * pmt)
 927 {
 928     BaseInputPin *This = (BaseInputPin *)iface;
 929     PIN_DIRECTION pindirReceive;
 930     HRESULT hr = S_OK;
 931
 932     TRACE("(%p, %p)\n", pReceivePin, pmt);
 933     dump_AM_MEDIA_TYPE(pmt);
 934
 935     EnterCriticalSection(This->pin.pCritSec);
 936     {
 937         if (This->pin.pConnectedTo)
 938             hr = VFW_E_ALREADY_CONNECTED;
 939
 940         if (SUCCEEDED(hr) && This->pin.pFuncsTable->pfnCheckMediaType((BasePin*)This, pmt) != S_OK)
 941             hr = VFW_E_TYPE_NOT_ACCEPTED; /* FIXME: shouldn't we just map common errors onto
 942                                            * VFW_E_TYPE_NOT_ACCEPTED and pass the value on otherwise? */
 943
 944         if (SUCCEEDED(hr))
 945         {
 946             IPin_QueryDirection(pReceivePin, &pindirReceive);
 947
 948             if (pindirReceive != PINDIR_OUTPUT)
 949             {
 950                 ERR("Can't connect from non-output pin\n");
 951                 hr = VFW_E_INVALID_DIRECTION;
 952             }
 953         }
 954
 955         if (SUCCEEDED(hr))
 956         {
 957             CopyMediaType(&This->pin.mtCurrent, pmt);
 958             This->pin.pConnectedTo = pReceivePin;
 959             IPin_AddRef(pReceivePin);
 960         }
 961     }
 962     LeaveCriticalSection(This->pin.pCritSec);
 963
 964     return hr;
 965 }
 966
 967 static HRESULT deliver_endofstream(IPin* pin, LPVOID unused)
 968 {
 969     return IPin_EndOfStream( pin );
 970 }
 971
 972 HRESULT WINAPI BaseInputPinImpl_QueryAccept(IPin * iface, const AM_MEDIA_TYPE * pmt)
 973 {
 974     BaseInputPin *This = (BaseInputPin *)iface;
 975
 976     TRACE("(%p/%p)->(%p)\n", This, iface, pmt);
 977
 978     return (This->pin.pFuncsTable->pfnCheckMediaType((BasePin*)This, pmt) == S_OK ? S_OK : S_FALSE);
 979 }
 980
 981 HRESULT WINAPI BaseInputPinImpl_EndOfStream(IPin * iface)
 982 {
 983     HRESULT hr = S_OK;
 984     BaseInputPin *This = (BaseInputPin *)iface;
 985
 986     TRACE("(%p)\n", This);
 987
 988     EnterCriticalSection(This->pin.pCritSec);
 989     if (This->flushing)
 990         hr = S_FALSE;
 991     else
 992         This->end_of_stream = 1;
 993     LeaveCriticalSection(This->pin.pCritSec);
 994
 995     if (hr == S_OK)
 996         hr = SendFurther( iface, deliver_endofstream, NULL, NULL );
 997     return hr;
 998 }
 999
1000 static HRESULT deliver_beginflush(IPin* pin, LPVOID unused)
1001 {
1002     return IPin_BeginFlush( pin );
1003 }
1004
1005 HRESULT WINAPI BaseInputPinImpl_BeginFlush(IPin * iface)
1006 {
1007     BaseInputPin *This = (BaseInputPin *)iface;
1008     HRESULT hr;
1009     TRACE("() semi-stub\n");
1010
1011     EnterCriticalSection(This->pin.pCritSec);
1012     This->flushing = 1;
1013
1014     hr = SendFurther( iface, deliver_beginflush, NULL, NULL );
1015     LeaveCriticalSection(This->pin.pCritSec);
1016
1017     return hr;
1018 }
1019
1020 static HRESULT deliver_endflush(IPin* pin, LPVOID unused)
1021 {
1022     return IPin_EndFlush( pin );
1023 }
1024
1025 HRESULT WINAPI BaseInputPinImpl_EndFlush(IPin * iface)
1026 {
1027     BaseInputPin *This = (BaseInputPin *)iface;
1028     HRESULT hr;
1029     TRACE("(%p)\n", This);
1030
1031     EnterCriticalSection(This->pin.pCritSec);
1032     This->flushing = This->end_of_stream = 0;
1033
1034     hr = SendFurther( iface, deliver_endflush, NULL, NULL );
1035     LeaveCriticalSection(This->pin.pCritSec);
1036
1037     return hr;
1038 }
1039
1040 typedef struct newsegmentargs
1041 {
1042     REFERENCE_TIME tStart, tStop;
1043     double rate;
1044 } newsegmentargs;
1045
1046 static HRESULT deliver_newsegment(IPin *pin, LPVOID data)
1047 {
1048     newsegmentargs *args = data;
1049     return IPin_NewSegment(pin, args->tStart, args->tStop, args->rate);
1050 }
1051
1052 HRESULT WINAPI BaseInputPinImpl_NewSegment(IPin * iface, REFERENCE_TIME tStart, REFERENCE_TIME tStop, double dRate)
1053 {
1054     BaseInputPin *This = (BaseInputPin *)iface;
1055     newsegmentargs args;
1056
1057     TRACE("(%x%08x, %x%08x, %e)\n", (ULONG)(tStart >> 32), (ULONG)tStart, (ULONG)(tStop >> 32), (ULONG)tStop, dRate);
1058
1059     args.tStart = This->pin.tStart = tStart;
1060     args.tStop = This->pin.tStop = tStop;
1061     args.rate = This->pin.dRate = dRate;
1062
1063     return SendFurther( iface, deliver_newsegment, &args, NULL );
1064 }
1065
1066 static const IPinVtbl InputPin_Vtbl =
1067 {
1068     BaseInputPinImpl_QueryInterface,
1069     BasePinImpl_AddRef,
1070     BaseInputPinImpl_Release,
1071     BaseInputPinImpl_Connect,
1072     BaseInputPinImpl_ReceiveConnection,
1073     BasePinImpl_Disconnect,
1074     BasePinImpl_ConnectedTo,
1075     BasePinImpl_ConnectionMediaType,
1076     BasePinImpl_QueryPinInfo,
1077     BasePinImpl_QueryDirection,
1078     BasePinImpl_QueryId,
1079     BaseInputPinImpl_QueryAccept,
1080     BasePinImpl_EnumMediaTypes,
1081     BasePinImpl_QueryInternalConnections,
1082     BaseInputPinImpl_EndOfStream,
1083     BaseInputPinImpl_BeginFlush,
1084     BaseInputPinImpl_EndFlush,
1085     BaseInputPinImpl_NewSegment
1086 };
1087
1088 /*** IMemInputPin implementation ***/
1089
1090 static inline BaseInputPin *impl_from_IMemInputPin( IMemInputPin *iface )
1091 {
1092     return (BaseInputPin *)((char*)iface - FIELD_OFFSET(BaseInputPin, lpVtblMemInput));
1093 }
1094
1095 static HRESULT WINAPI MemInputPin_QueryInterface(IMemInputPin * iface, REFIID riid, LPVOID * ppv)
1096 {
1097     BaseInputPin *This = impl_from_IMemInputPin(iface);
1098
1099     return IPin_QueryInterface((IPin *)&This->pin, riid, ppv);
1100 }
1101
1102 static ULONG WINAPI MemInputPin_AddRef(IMemInputPin * iface)
1103 {
1104     BaseInputPin *This = impl_from_IMemInputPin(iface);
1105
1106     return IPin_AddRef((IPin *)&This->pin);
1107 }
1108
1109 static ULONG WINAPI MemInputPin_Release(IMemInputPin * iface)
1110 {
1111     BaseInputPin *This = impl_from_IMemInputPin(iface);
1112
1113     return IPin_Release((IPin *)&This->pin);
1114 }
1115
1116 static HRESULT WINAPI MemInputPin_GetAllocator(IMemInputPin * iface, IMemAllocator ** ppAllocator)
1117 {
1118     BaseInputPin *This = impl_from_IMemInputPin(iface);
1119
1120     TRACE("(%p/%p)->(%p)\n", This, iface, ppAllocator);
1121
1122     *ppAllocator = This->pAllocator;
1123     if (*ppAllocator)
1124         IMemAllocator_AddRef(*ppAllocator);
1125
1126     return *ppAllocator ? S_OK : VFW_E_NO_ALLOCATOR;
1127 }
1128
1129 static HRESULT WINAPI MemInputPin_NotifyAllocator(IMemInputPin * iface, IMemAllocator * pAllocator, BOOL bReadOnly)
1130 {
1131     BaseInputPin *This = impl_from_IMemInputPin(iface);
1132
1133     TRACE("(%p/%p)->(%p, %d)\n", This, iface, pAllocator, bReadOnly);
1134
1135     if (bReadOnly)
1136         FIXME("Read only flag not handled yet!\n");
1137
1138     /* FIXME: Should we release the allocator on disconnection? */
1139     if (!pAllocator)
1140     {
1141         WARN("Null allocator\n");
1142         return E_POINTER;
1143     }
1144
1145     if (This->preferred_allocator && pAllocator != This->preferred_allocator)
1146         return E_FAIL;
1147
1148     if (This->pAllocator)
1149         IMemAllocator_Release(This->pAllocator);
1150     This->pAllocator = pAllocator;
1151     if (This->pAllocator)
1152         IMemAllocator_AddRef(This->pAllocator);
1153
1154     return S_OK;
1155 }
1156
1157 static HRESULT WINAPI MemInputPin_GetAllocatorRequirements(IMemInputPin * iface, ALLOCATOR_PROPERTIES * pProps)
1158 {
1159     BaseInputPin *This = impl_from_IMemInputPin(iface);
1160
1161     TRACE("(%p/%p)->(%p)\n", This, iface, pProps);
1162
1163     /* override this method if you have any specific requirements */
1164
1165     return E_NOTIMPL;
1166 }
1167
1168 static HRESULT WINAPI MemInputPin_Receive(IMemInputPin * iface, IMediaSample * pSample)
1169 {
1170     BaseInputPin *This = impl_from_IMemInputPin(iface);
1171     HRESULT hr = S_FALSE;
1172
1173     /* this trace commented out for performance reasons */
1174     /*TRACE("(%p/%p)->(%p)\n", This, iface, pSample);*/
1175     if (This->pFuncsTable->pfnReceive)
1176         hr = This->pFuncsTable->pfnReceive(This, pSample);
1177     return hr;
1178 }
1179
1180 static HRESULT WINAPI MemInputPin_ReceiveMultiple(IMemInputPin * iface, IMediaSample ** pSamples, LONG nSamples, LONG *nSamplesProcessed)
1181 {
1182     HRESULT hr = S_OK;
1183     BaseInputPin *This = impl_from_IMemInputPin(iface);
1184
1185     TRACE("(%p/%p)->(%p, %d, %p)\n", This, iface, pSamples, nSamples, nSamplesProcessed);
1186
1187     for (*nSamplesProcessed = 0; *nSamplesProcessed < nSamples; (*nSamplesProcessed)++)
1188     {
1189         hr = IMemInputPin_Receive(iface, pSamples[*nSamplesProcessed]);
1190         if (hr != S_OK)
1191             break;
1192     }
1193
1194     return hr;
1195 }
1196
1197 static HRESULT WINAPI MemInputPin_ReceiveCanBlock(IMemInputPin * iface)
1198 {
1199     BaseInputPin *This = impl_from_IMemInputPin(iface);
1200
1201     TRACE("(%p/%p)->()\n", This, iface);
1202
1203     return S_OK;
1204 }
1205
1206 static const IMemInputPinVtbl MemInputPin_Vtbl =
1207 {
1208     MemInputPin_QueryInterface,
1209     MemInputPin_AddRef,
1210     MemInputPin_Release,
1211     MemInputPin_GetAllocator,
1212     MemInputPin_NotifyAllocator,
1213     MemInputPin_GetAllocatorRequirements,
1214     MemInputPin_Receive,
1215     MemInputPin_ReceiveMultiple,
1216     MemInputPin_ReceiveCanBlock
1217 };
1218
1219 static HRESULT InputPin_Init(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1220                              const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1221                              LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, BaseInputPin * pPinImpl)
1222 {
1223     TRACE("\n");
1224
1225     /* Common attributes */
1226     pPinImpl->pin.refCount = 1;
1227     pPinImpl->pin.pConnectedTo = NULL;
1228     pPinImpl->pin.pCritSec = pCritSec;
1229     pPinImpl->pin.tStart = 0;
1230     pPinImpl->pin.tStop = 0;
1231     pPinImpl->pin.dRate = 1.0;
1232     Copy_PinInfo(&pPinImpl->pin.pinInfo, pPinInfo);
1233     ZeroMemory(&pPinImpl->pin.mtCurrent, sizeof(AM_MEDIA_TYPE));
1234     pPinImpl->pin.pFuncsTable = pBaseFuncsTable;
1235
1236     /* Input pin attributes */
1237     pPinImpl->pFuncsTable = pBaseInputFuncsTable;
1238     pPinImpl->pAllocator = pPinImpl->preferred_allocator = allocator;
1239     if (pPinImpl->preferred_allocator)
1240         IMemAllocator_AddRef(pPinImpl->preferred_allocator);
1241     pPinImpl->pin.lpVtbl = InputPin_Vtbl;
1242     pPinImpl->lpVtblMemInput = &MemInputPin_Vtbl;
1243     pPinImpl->flushing = pPinImpl->end_of_stream = 0;
1244
1245     return S_OK;
1246 }
1247
1248 HRESULT BaseInputPin_Construct(const IPinVtbl *InputPin_Vtbl, const PIN_INFO * pPinInfo,
1249                                const BasePinFuncTable* pBaseFuncsTable, const BaseInputPinFuncTable* pBaseInputFuncsTable,
1250                                LPCRITICAL_SECTION pCritSec, IMemAllocator *allocator, IPin ** ppPin)
1251 {
1252     BaseInputPin * pPinImpl;
1253
1254     *ppPin = NULL;
1255
1256     assert(pBaseFuncsTable->pfnCheckMediaType);
1257
1258     if (pPinInfo->dir != PINDIR_INPUT)
1259     {
1260         ERR("Pin direction(%x) != PINDIR_INPUT\n", pPinInfo->dir);
1261         return E_INVALIDARG;
1262     }
1263
1264     pPinImpl = CoTaskMemAlloc(sizeof(*pPinImpl));
1265
1266     if (!pPinImpl)
1267         return E_OUTOFMEMORY;
1268
1269     if (SUCCEEDED(InputPin_Init(InputPin_Vtbl, pPinInfo, pBaseFuncsTable, pBaseInputFuncsTable, pCritSec, allocator, pPinImpl)))
1270     {
1271         *ppPin = (IPin *)pPinImpl;
1272         return S_OK;
1273     }
1274
1275     CoTaskMemFree(pPinImpl);
1276     return E_FAIL;
1277 }